Dust catcher with multijet nozzles

FIELD: mining industry, particularly to catch dust generated by machines and/or rigs in mines and tunnels.

SUBSTANCE: dust catcher comprises body with precipitation member formed as demister comprising moistening nozzles and drip catching means. Fan with drive is arranged near inlet/outlet side thereof. Moistening nozzles located in front of the demister in air flow direction are made as spaced multijet nozzles having separate sprayers, which form common sprayed curtain. The fan is installed in cleaned gas flow downstream the demister and drip catching means. The fan is arranged in case connected to dust catcher body. Demister is installed in contaminated air flow at inlet side and is arranged in inclined position. Upper edge thereof projects relatively lower edge. Air deflectors are arranged between the demister and drip catching means. Bottom sheet is inclined towards drip catching means. Multijet nozzles project towards contaminated air flow and are connected to load-bearing frame obliquely installed in accordance with demister inclination angle. Dust catcher is provided with separate vessels for additives, which pass through metering device into water-pipe. Mixer connected to water-pipe or built in water-pipe is installed downstream the metering device. Spraying device is arranged in front of moistening nozzles and demister with drip catching means. Spraying device comprises spraying heads, which create water mist and is connected with water source or with water-pipe and metering device with mixer. Dust-contaminated air flow is mixed with water mist and then the obtained sludge is gathered. Moist air is dried by water droplet separation and then the dried air is introduced in cleaned gas flow. Gases generated as a result of explosion are laden with water mist preliminarily mixed with additives, which create ecologically safe compositions with nitrose or similar gases formed during explosion.

EFFECT: increased operational efficiency and reduced dust catcher size.

20 cl, 8 dwg

 

The invention relates to a dust collector for use behind or creating dust machines and/or installations in underground mining and tunneling, with the body containing as a precipitation element provided with a moistening nozzles demister and the drip pan, and located in the zone of the input/output side of the fan drive.

This dust collector is known from DE 19853190 A1. This is a known dust collector includes a fan located between the input and output sides, therefore, in the stream of crude gas, i.e. before demisters and drip pan. The moistening nozzles are not only before demisters located in the hanging position approximately horizontally in the air flow, but before the fan wheel, which is thus loaded not only dust, but also water droplets. Other moistening nozzles are located in the gearbox, so that in the area of demister gets, in General, pre-moistened dust. Located there is a nozzle carried out spraying in the direction of demister in order to promote the precipitation of sludge in demister. Not to mention the numerous moisturizer or water nozzles, the disadvantage is that there is no single water mist, leading to hydration of the transferred raw gas dust. Further, it is not the OK is because of the described arrangement is impossible compact design of the dust collector, but only by its elongated execution.

The basis of the invention lies, therefore, the task of creating a dust collector, acting optimally even when strong gusts of dust and create tiny water droplets.

This problem is solved according to the invention due to the fact that located before demisters in the direction of air flow of the moistening nozzles made in the form of multi-jet nozzles, separate atomizer which, forming a common spray the veil, are distributed, while the fan is located in the flow of clean gas for demisters and drip pan.

We designed dust collector was unexpectedly found that it is possible to perform the whole of his body is very compact, with the fan or the chassis has been "made". Due to the intensive moisture dust multi-jet nozzles need not be placed in front of them forming a water mist nozzle, and the fan can be, thus, is for demisters and eliminator, because it is no longer needed for uniform wetting of the crude gas or untreated air. It has the extra large mainly that the fan itself is not loaded either water droplets or dust particle and, neither the sludge particles. On the contrary, it is placed in a "protected" space for demisters and drip pan. Because there are several multi-jet nozzles, forming respectively the joint spray the veil, you can create a screen of fine water mist, through which dust particles can be respectively hydrated. They are then securely captured in demister and removed, while the remaining water droplets are caught in the drip pan and also removed. In the area of the fan and, in particular, its impeller falls, thereby, not only threatening her cleaned air. By reducing the structural dimensions of this dust collector has a more versatile application. And this is not to mention the fact that he is by virtue of the implementation is much more efficient and better at cost.

According to one suitable implementation of the invention provides that the fan is supplied with attachable to the housing of the collector housing and the soundproof ability. Due to the special implementation of the dust collector can be provided to the fan's own body and thus also the corresponding soundproof ability. This means that the fan housing itself becomes the soundproof ability, so that the noise load on such a collector of things the public is reduced. Integrated into the housing of the dust collector fan of the old design it was not possible to provide appropriate noise protection needed for constructive dimensions. It is the ever-increasing requirements for environmental protection are optimally suited, thus, the dust collector according to the invention.

According to another implementation of the fan casing is provided primarily located him serving as sound proofing installed. When the supply of appropriate noise protection needed suitable reinforcement of the wall of the fan housing serves as a sound proofing, then as the location of the silencer for fan housing minimizes the output noise of purified air or minimized coming from the fan noise.

We have already mentioned that due to the optimal design dimensions, respectively, of the combined dust collector has the ability to directly equip them also creates dust devices. According to the invention provides that the housing of the dust collector and the fan housing are located in the United state on the tunneling machine, mainly in the area between the mining boom and conveyor. In such a device, the dust collector can be located with direct suction and removing the generated mining head dust, so there is no danger, that part of the air flow will get past the dust collector in the roadway or the relevant premises. When the described device is a kind of attachment to excavating machine, so also here, there is no additional need for space. In contrast, the compact body of the dust collector and the fan can be easily installed in an existing space.

To prevent penetration too large dust particles or even stones in demister and to protect it from damage, the invention provides that demister is tilted in the raw air directly on the input side, and the top edge is made and is protruding relative to the bottom edge. Thus, the upper edge is already protection of demister, so that special protection is not required. Falling down from the roof rock or large dust particles are not picked up, thus, air flow, and can fall through it and land on the ground.

For independence from the movement of the mining boom and conveyor provides that the housing of the dust collector and fan have their own support, they rely on the driving mechanism. Both buildings, thereby, are directly connected with the driving mechanism and thus retain its position regardless of the position of the mining boom, the company is and also the position of the conveyor.

When the described positioning of the dust collector and fan casing cleaned air is taken over by the conveyor. In order to avoid the emergence of a new dust invention provides that the output side of the housing of the dust collector or fan housing contains a deflecting nozzle. This deflecting nozzle is configured to reject cleared the air so that it will not impact the material to be conveyed. This deflecting nozzle is made adjustable, so depending on the needs you can change the direction of removal of the cleaned air.

Uniform load of demister and capsulates accordingly, dust and moist air is achieved according to the invention due to the fact that between demisters and capreolata are the air vents and the bottom sheet is tilted in the direction of capsulates. Water-dust mixture or slurry is directed by the inclined bottom sheet to capreolata for removal together with the waste water or separately depending on feasibility. The sludge is sent then into the sump or remove other way, so demister and keplerlaan can always evenly to achieve appropriate air flow.

Above it was mentioned that the multi-jet nozzle used according to the invention, to cause the t is very intense moisture to the incoming dust. This is achieved, in particular, due to the fact that multi-jet nozzles are made to meet untreated air, i.e. form a very intense and dense water mist of tiny droplets, which causes a quick and reliable settlement of the incoming dust. The dust can then be trapped in demister and removed in the manner described.

Uniform and dense fog, if you look at the surface of the access demister, is achieved according to the invention due to the fact that multi-jet nozzles are arranged on a support frame installed obliquely in accordance with the inclination of demister. Multi-jet spray nozzle, thus, its water mist into the raw air, with the described arrangement ensures uniform thickness of the water mist over the entire surface of demister, i.e. regardless of whether moving crude air along the upper part of the housing of the dust collector, in the middle or at the bottom.

In order to be able to easily check the status of demister and drip pan, at the same time to carry out replacement or other work in this area, in the area of demister and drip pan in the body of the dust collector is provided by the inspection door, mainly rotary door. The use of rotary doors guarantee that these structural elements immediately have is I available, when the inspection work has been completed, and that they sit in the same way as it is relevant for their effectiveness. Inspection doors shall be provided with seals, which, with appropriate designs always maintain its proper fit and seal.

Used multi-jet nozzles contain several individual nozzles evenly supplied by water under pressure according to the invention due to the fact that a separate multi-jet nozzle contains a compact body, fitted with a camera that is attached to the spray into each other, distributedly located separate nozzles. All nozzles is thus the same pressure, because they are supplied with water under pressure from the same distribution chamber. They are with the possibility of spraying each other to form a uniform spray of the veil, which is important for uniform wetting of dust.

The formation of a uniform sawn or spray curtain is provided in one refinement of the invention, according to which the individual jets multi-jet nozzles have the same diameter and the same output holes. They are located at a certain distance from each other, namely, so that they form a uniform razbryzgivaya the needful veil, moreover, due to the same pressure and the same size, they are not mutually influence each other and do not interfere with each other and form a uniform spray the veil.

If there must be formed a certain increased angle of spray, it is preferable if the angle increases, splashing some of the nozzles are located in the area of the bevel of the base of the nozzle exposed to the outside, while one or more of these nozzles remain in the plane of the nozzle base. Due to this, it is possible to form a greater angle of spray, which nevertheless guarantees the necessary intensity or necessary to the spray curtain.

Using multi-jet nozzles must be formed evenly and securely precipitating dust spray curtain, and according to the invention a multi-jet nozzle with a smaller angle of spray (for example, 60°) and multi-jet nozzle with a large angle of spray (for example, 120°) are located on the support frame, forming a complete circular spray curtain. It is possible, for example, that at the outer edge to the support frame placed multi-jet nozzle with a smaller angle of spray, and in the middle is one or more of the wide angle spray that provides the most intense moisture or impact on the submitted raw air dust.

In accordance with one expedient refinement of the present invention can use, basically, the same dust collecting device to neutralize gases as the explosions. For this purpose, provided that the moistening nozzles in the direction of air flow are before demisters, the fan is located in the flow of clean gas for demisters and drip pan and tanks for additives that have been completed and are submitted through the dispenser in a water pipe. Due to this, it is possible with the same hardware, i.e. with the same body of the dust collector, so handle released during blasting gases and so influence them that facing into the flow of clean gas gases, or the appropriate air does not have polluting properties. We cannot completely exclude the possibility that there will be a formation of unpleasant odors arising compounds, however, can again be affected separately or come to terms with them, because they cannot lead to the defeat of the people. While this solution moistening nozzles are located with the possibility of intensive treatment of the air flow, i.e. the impact on him, with the purpose of settling dust or impact here on the gases of explosion, so then the connected demister drops again can be separated from the air for their individual training or input air into the stream of purified gas. Across the line the military provided a dispenser of tanks purposefully remove the quantity of additives, necessary and appropriate for the composition of the gases of the explosion.

According to one expedient refinement provides that the dispenser is attached to a water pipe or embedded in her mixer, so fed supplements intensively mixed with water before they are through the moistening nozzles will be introduced into the gases of the explosion. It is clear that the dispenser and located behind the mixer must operate separately, in order to prevent the adulteration of these additives when the dust settling. It is also possible to provide here additional additives, namely those that contribute to the settling of dust.

Finally one improvement of the invention provides that either the simultaneous use of conventional moistening nozzles, either separately before moisturizing nozzles and demisters with eliminator spray is a device that contains creating tiny droplets of the nozzle and connected with a source of water or water pipe and spout with a mixer. Depending on the form of gas explosion, or depending on their composition may be quite appropriate to carry out such preparation and processing of gas explosion in two stages, namely through the usual moistening nozzles and through nozzles located in front of the moistening nozzles, and then there it is the ability to adjust or to select the nozzle forming especially small water droplets without the intensive mixing of the gases of explosion and impact. Further, as is described in the claims, you can only use these nozzles located in front of the moistening nozzles, if we are talking about cleaning the gases of explosion, i.e. disable the moistening nozzles during this operation.

Known for the settling of dust arising from the use of machines and equipment in underground mining, by irrigation water, thereby preparing the air. The gases of explosion arising from the detonation of the charges, i.e. blasting, still sucking and removing existing vent pipes, namely, as a rule, without affecting in any form on the gases of explosion and contained nitrous gases. The gases of explosion injected into an elaborate air flow, and then mixed with it, so they are due to a significant reduction in the mix does not represent more danger. In accordance with the new rules, however, it is unacceptable to release nitrous gases into the atmosphere untreated. Therefore, the method according to the invention provides that arise when blasting gases by alternately precipitating dust device handle sprayed to the smallest drops of water, to which were preliminarily blended with additives that form with emitted from blasting nitrous and similar gases, sustainable connection. Thus, et is the t method makes it possible to precipitate and to produce harmful oxides of nitrogen (NO) formation of environmentally friendly compounds which, therefore, may not cause harmful effects on humans and machines. Possible unpleasant odors must be eliminated through the adoption of suitable measures, and these odors remain, as a rule, without attention. Preferably further, that for the preparation and disposal of the gases of explosion does not require special devices, and you can use accordingly supplemented by a dust collector, which is already used in underground mining in large quantities, or can be respectively equipped with the ability to perform dual functions.

Finally, the invention provides that the enriched water additives on the distance from the precipitated dust device intensively introduced in connection with the gases of explosion and sprayed for them to implement, thereby, dual clean, and it is located in front of the nozzles or in the normal, necessary for dust deposition nozzles or just located in front of the nozzles. Thus, a method multilateral application, which can be implemented depending on the needs and without large additional costs and which then ensures effective settlement or effective neutralization of dust and nitrous gases.

The invention is distinguished, in particular, the fact that the account is formed, having the smallest ka is whether a full-circle spray curtain in front of demisters there is the possibility of performing the entire body of the dust collector is very compact and removal of the fan, in order, firstly, to defend himself, and, secondly, to equip it with mufflers for additional regulations ecologists. Private jets multi-jet nozzles are arranged and distributed so that the use of additional water nozzles before demisters is not required. Moist dust or slurry material is then precipitated and removed in demeestere, while still remaining drops in purified air to catch the drip pan for supply of air flow to remove. In General, due to this particular run the dust collector it can be installed directly on creating dust machines, such as the tunneling machine, so here is focused and in the right place to do its job, namely to extract the dust from the mine atmosphere or from the air and to comply with the provisions of the mining supervision authorities or other bodies. In addition to dust deposition using the same and only supplemented the dust collector can be taken for gases of explosion, which is continuously formed in underground mining and tunneling, in particular when drilling drifts. Still when driving in both field and reservoir drifts do not refuse blasting or cannot be abandoned, because, for example, are too small cross-sectional drifts. Especially preferred in which such dust collector or the corresponding method is what you can abandon the particular device and that necessary here, the additional costs are relatively small, but significant success. For the first time with the help of this device you can bind and neutralize not only dust, but also the gases of explosion, namely respectively alternately.

Other details and advantages of the object of the invention is shown in the following description, the accompanying drawing, in which preferred exemplary embodiment is shown with the necessary details and individual parts. In the drawing represent:

figure 1 - schematic tunneling machine with dust collector;

figure 2 is a side view of the dust collector with separate fan casing;

figure 3 is a top view of the collector of figure 2;

figure 4 is another implementation of the dust collector with separate fan housing when viewed from the side;

figure 5 - performance dust collector from figure 4, when viewed from above;

6 is a bearing frame with many multi-jet nozzles;

Fig.7 - sectional view of a multi-jet nozzle with bevel;

Fig - multi-jet nozzle, partly in section, with even location of the individual nozzles.

Figure 1 at the side view shows the tunneling machine 2 with built-in dust collector 1. Mining machine 2 is located in the roadway 3 underground drilling and contains mining boom 4 with mining drum 8 and located behind Tran the porter 5. The dust collector 1 is mounted directly on the tunneling machine 2 and is connected with the driving mechanism 7 by means of bearings 6. It is based on the driving mechanism 7, therefore, that the position of the mining boom 4 and the conveyor belt 5 does not affect its location.

Figure 1 shows that the fan 11 with its actuator 12 is not here between the input 13 and the output 14 of the sides of the body 10 of the collector, and on the other side of demister 15 and drip pan 16 in private housing 18. In the housing 18 of the fan is provided by the soundproof ability 19 in the form of muffler 20, so leaving the purified air in the zone of the outlet 17 of the housing 18 of the fan results in only a small level of noise.

At the output 17 of the housing 18 of the fan is deflecting nozzle 21 through which opening the purified air did not cause the load on behind the plots. Deflecting the nozzle 21 can be arbitrarily adjusted in order to direct the cleaned air in the direction of the roof or other parts of the roadway.

Figure 1 also shows that the housing 10 of the dust collector is in the area of demister 15 special form, because the upper edge 22 is significantly lower edge 23. Pieces of rocks, or too much dust can not, thus, fall into the zone of demister 15.

Untreated air is indicated by the position 24, and the flow of purified air is indicated by position 4. Both point at the same time the direction 25 of the air flow.

Figure 2 is a top view of the dust collector 1, and here the position of the 24 identified untreated air entering into the housing 10 of the dust collector from the connection 26 of the vent pipe. In this zone occurs then the first contact with water mist generated by moistening nozzles 29, 30, 31 in the form of a multi-jet nozzle 33. These multi-jet nozzle 33 endure untreated air, i.e. watching intense moisture carried dust or by contacting water and dust. In demister 15 is then settling dust, while still carrying water droplets on the air is evenly distributed through the air vents 35, 36 on the drip pan 16. It is seen that the bottom sheet 37 is tilted so that the sludge or given and enters the area of the drip pan 16, or may be extracted here, for example, through the inspection door 40. The entire housing 10 dust collector is backed by bearings 27 on the ground, and if necessary, the housing 18 of the fan also draws on the ground, or it has its own supports.

Mentioned multi-jet nozzle 33 is installed on the support frame 38, so as to form the same water mist to set back with a slope of demister 15. The water supply pipe 41 supplies these separate multi-jet nozzle 33 is equal is slowly pressurized water.

In the area of the supporting frame 38 is further inspection door 39, and shows that all these inspection door 39, 40 made in the form of rotary doors, to ensure always the same in the closed position.

In the area of the outlet side 14 to the housing 10 dust collector attached to the housing 18 of the fan, which operates the fan 11 with its impeller, ensuring the absorption of untreated air 24 through the housing 10 of the dust collector. The fan 11 is loaded now only purified air, i.e. marked POS flow of purified air. The last to leave the body 18 of the fan or outlet 17 or the output 17', namely when the actual fan housing 18 is 19 soundproof ability in the form of muffler 20.

Figure 3 shows a top view of the dust collector 1 with the housing 10 and located behind the housing 18 of the fan with silencer 20, which serves as a sound proofing 19. Before the housing 18 of the fan is located on the housing 10 of the dust collector, which are as demister 15 drip pan 16 and the moistening nozzles 29, 30, 31. These moistening nozzles 29, 30, 31 are fed through a water pipe 41 connected usually with normal water network. This water supply pipe 41 is a mixer 62, namely so that it mixes intensively remote h the rez bypass fluid from the reservoirs 58, 59 for additives with water flowing through the pipe 41 water. The correct amount of additives admixed through the dispenser 60, so that the suction of the gases of explosion of a mixture of water with additives gets on the respective gases of explosion through the moistening nozzles 29, 30, 31, through which the reaction contained in the gases of explosion nitrous gases become harmless. It is clear that in addition to the reservoirs 58, 59 additives may also provide additional storage tanks for additives, such as those that introduce the additive into the water in the normal case, i.e. when the dust collector 1, and thus, the settling of dust. Typically, the mixer 62 include, however, only when after blasting should be besieged Gaza explosion.

The most intensive gas explosion or other reasons it may be useful to have before described the spray impinging devices for gases of explosion spray device 64. This spray device with 64 nozzles 65, 66 there are only indicated, namely in the area of accession on 26 vent pipe. The distance between the spray device 64 and moistening nozzles 29, 30, 31 can, if necessary, to choose. Also this spray device 64 necessary additives are selected from the reservoirs 58, 59, namely through asator 60, so then by mixer 62 to provide intensive mixing, particularly when, as here shown, should be mixed with water from a source 67 of the water.

You can use spray device 64 and the normal moistening nozzles 29, 30, 31 together or respectively only improved and advanced the moistening nozzles 29, 30, 31 or only spray device 64. This provides optimal versatility.

Figs.4 and 5 show another possibility run the dust collector 1, consisting of a body 10 and the housing 18 of the fan. Also here on the inlet side 13 of the housing 10 of the dust collector demister 15 have obliquely and load crude gas or untreated air 24, and this crude air 24 before reaching demister 15 must penetrate through the water mist 42 formed by the multi-jet nozzles 33, 33', 33", before he gets in demister 15. The dust is so intensely moisturized, which is securely deposited in demister 15 and is removed. There are also relevant inspection door 39, through which you have access to certain parts of the body 10 of the dust collector. For the Cabinet dust collector 10 is the casing 18 with the fan 11 and the actuator 12. Also here in the casing 18 of the fan or blower 11 is the muffler 20, in order with the responsibility to significantly reduce samoobrazovanie.

Figure 6 shows a full-circle spray curtain 54 formed by a separate spray curtains 52, 53 multi-jet nozzles 33. It is seen that the spray curtain 52 or 53, 53' of unequal size. The reason for this is that a separate multi-jet nozzle 33 is made in different ways, as shown Fig.7 and 8. Separate multi-jet nozzle 33 as can be seen, mounted on a support frame 38 formed by the pipes 41. This enables optimal provision of a separate multi-jet nozzles 33 water under pressure and their targeted location with the possibility of formation of total spray curtain or a full-circle spray curtain 54.

Separate multi-jet nozzle 33 contain compact body 44 with a distribution chamber 45, through which the individual nozzles 46, 47 can uniformly be supplied with water under pressure. On Fig separate nozzles 46 are, for example, circular, so that their outlet openings 49 are located at the same height with the base 50 of the nozzle. Figure 7 provides a bevel 48, which is only the nozzle 46, while other nozzles 47, as Fig, are located within the base 50 of the nozzle. By performing in Fig.7 is formed correspondingly large spray curtain 52, since the nozzles 47 are arranged at a different angle is also at a different height. However, the forms shown in Fig.6 full circle spray curtain 54 optimal uniformity and intensity.

All these signs, also shown only in the drawings, should be considered separately and in combination as essential to the invention.

1. A dust collector for use behind or creating dust machines and/or installations in underground mining and tunneling, with the body containing as a precipitation element provided with a moistening nozzles demister and the drip pan, and located in the zone of the input/output side of the fan with the actuator, characterized in that located before demisters in the direction of air flow of the moistening nozzles made in the form of multi-jet nozzles, separate atomizer which, forming a common spray the veil, are distributed, while the fan is located in the flow of clean gas for demisters and drip pan.

2. The dust collector according to claim 1, characterized in that the fan is supplied with attachable to the housing of the collector housing and the soundproof ability.

3. The dust collector according to claim 2, characterized in that the casing is serving as sound proofing the silencer.

4. The dust collector according to claim 1 or 2, characterized in that the housing of the dust collector and the fan casing p is sporogony in the United state on the tunneling machine mainly in the area between the mining boom and belt.

5. The dust collector according to claim 1, characterized in that demister is tilted in the raw air directly on the input side, and the top edge is made and is protruding relative to the bottom edge.

6. The dust collector according to claim 4, characterized in that the housing of the dust collector and the fan casing contain their own support, they rely on the driving mechanism of the tunneling machine.

7. The dust collector according to claim 1 or 2, characterized in that the output side of the housing of the dust collector or fan housing contains a deflecting nozzle.

8. The dust collector according to claim 1, characterized in that between demisters and drip pan are the air vents and the bottom sheet is tilted in the direction of the drip pan.

9. The dust collector according to claim 1, characterized in that the multi-jet nozzle are made to meet untreated air.

10. The dust collector according to claim 1, characterized in that the multi-jet nozzles are arranged on a support frame installed obliquely in accordance with the inclination of demister.

11. The dust collector according to claim 1, characterized in that in the area of demister and drip pan on the body of the dust collector is provided by the inspection door, mostly swing doors.

12. The dust collector according to claim 1, the tives such as those separate multi-jet nozzle contains a compact case fitted with a distribution chamber, to which is attached the spray into each other, distributedly located separate nozzles.

13. The dust collector according to claim 1, characterized in that the individual jets multi-jet nozzles have the same diameter and the same output holes.

14. The dust collector according to claim 1, characterized in that to increase the angle of spraying some of the individual nozzles are located in the area of the bevel nozzle base protruding outward.

15. The dust collector of claim 10, wherein the multi-jet nozzle with a smaller angle of spray (for example, 60°) and multi-jet nozzle with a large angle of spray (for example, 120°) are located on the support frame, forming a complete circular spray the veil.

16. The dust collector according to claim 1, characterized in that provided tanks for additives that have been completed and are submitted through the dispenser in a water pipe.

17. The dust collector according to item 16, characterized in that the dispenser is attached to a water pipe or embedded in her mixer.

18. The dust collector according to claim 1, characterized in that before the moistening nozzles and demisters with eliminator spray is a device that contains creating tiny droplets with the La and connected with a source of water or water pipe and spout with a mixer.

19. The method of deposition of dust for creating dust machines and installations in underground mining and tunneling, as well as for removal of the gases of explosion with information contained in these gases on the spot and dusty air load sprayed down to the smallest drops of water, after which the resulting slurry is collected and humid air by separating the water droplets are dried and injected into a stream of purified gas, characterized in that occurs when blasting gases by alternately precipitating dust device load sprayed down to the smallest drops of water, to which pre-mix additives, which form with emitted from blasting nitrous and similar gases, sustainable connection.

20. The method according to claim 19, characterized in that the enriched water additives on the distance from the precipitated dust device intensively introduced in connection with the gases of explosion and sprayed on them.



 

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FIELD: mining industry, particularly to catch dust generated by machines and/or rigs in mines and tunnels.

SUBSTANCE: dust catcher comprises body with precipitation member formed as demister comprising moistening nozzles and drip catching means. Fan with drive is arranged near inlet/outlet side thereof. Moistening nozzles located in front of the demister in air flow direction are made as spaced multijet nozzles having separate sprayers, which form common sprayed curtain. The fan is installed in cleaned gas flow downstream the demister and drip catching means. The fan is arranged in case connected to dust catcher body. Demister is installed in contaminated air flow at inlet side and is arranged in inclined position. Upper edge thereof projects relatively lower edge. Air deflectors are arranged between the demister and drip catching means. Bottom sheet is inclined towards drip catching means. Multijet nozzles project towards contaminated air flow and are connected to load-bearing frame obliquely installed in accordance with demister inclination angle. Dust catcher is provided with separate vessels for additives, which pass through metering device into water-pipe. Mixer connected to water-pipe or built in water-pipe is installed downstream the metering device. Spraying device is arranged in front of moistening nozzles and demister with drip catching means. Spraying device comprises spraying heads, which create water mist and is connected with water source or with water-pipe and metering device with mixer. Dust-contaminated air flow is mixed with water mist and then the obtained sludge is gathered. Moist air is dried by water droplet separation and then the dried air is introduced in cleaned gas flow. Gases generated as a result of explosion are laden with water mist preliminarily mixed with additives, which create ecologically safe compositions with nitrose or similar gases formed during explosion.

EFFECT: increased operational efficiency and reduced dust catcher size.

20 cl, 8 dwg

Absorbing filter // 2335330

FIELD: technological processes.

SUBSTANCE: absorbing filter is intended for air treatment plants removing harmful and toxic admixtures and aerosols from air and relates to group protection equipment. Absorbing filter includes cylindrical case with anti-aerosol and sorption treatment stages placed in sequence along air course, and inlet and outlet holes. First stage along air course is anti-aerosol one; it is made of cellulose and mineral fiber based materials, while the second, sorption stage is made of double-layer material where the first layer along air course consists of active carbon modified by copper and/or nickel salts and active carbon modified by copper, chrome and silver salts, at the weight ratio of 1:(0.75-1.5). The second layer is made of cellulose fiber material containing 30-50 wt % of active carbon and/or active carbon modified by copper and chrome salts.

EFFECT: improved air treatment quality, increased life time of absorbing filter and reliability of acid gas (such as chlorine or hydrogen sulfide) and ammonium absorption.

3 dwg, 1 ex

Neutraliser filter // 2447921

FIELD: process engineering.

SUBSTANCE: invention relates to filtration, namely, to gas filter intended for cleaning hydrocarbon gases to be used chemical, petrochemical and automotive industries. Proposed filter comprises case 1 with inner heat-insulation wall, inlet branch pipe 21 and discharge branch pipe 22, and divided into three consecutive zones by baffles 2, 3 First zone is that of heating waste gases 26 provided with thermal element 12 with shield 11 secured on baffle 2. Hollow catalytic reactivating filter 27 arranged in second zone has its first end secured on baffle 2 and second end secured on additional hub 14. Third zone accommodates filtration elements 5, 6-9 of catalytic reactivating filter with their ends tightly secured in baffle 3 and case face wall, respectively. Baffles 2, 3 are provided with waste gas passage openings.

EFFECT: simplified design, lower costs and higher efficiency.

5 cl, 1 dwg

Air cleaning unit // 2550131

FIELD: ventilation.

SUBSTANCE: air cleaning unit includes an air duct, in one of the walls of which there are slots, into which guides are inserted and provided with cassettes with filters for different contaminating gases, which are placed in them and have a possibility of being moved. Before filters, in a flow of cleaned air there installed are air composition sensors connected to a gas analyser that is connected to a switch. Cassettes are mechanically connected to mechanisms of their movement, which are connected to the switch. Flanges are installed on the air duct ends.

EFFECT: reduction of labour intensity and improvement of air cleaning quality due to a possibility of automatic installation of filters in the air duct, which are intended for air cleaning from those contaminating components that are available in the cleaned air in unallowable amounts.

2 dwg

FIELD: mining, particularly methods and devices to prevent dust generation in tailing pit benches by moistening thereof with water or liquid binding agent.

SUBSTANCE: device comprises self-moving vehicle, for instance pontoon water craft, provided with pump, vessel for reagent, hydraulic monitor, unit with executive tool for channel forming in bank area and isolated power generating plant. Above mechanisms are installed on water craft deck. Hydraulic monitor may rotate in horizontal and vertical planes. Drives of all mechanisms are linked with the power generating plant. Executive tool is installed below water craft floating line. Vessel for reagent is provided with proportioning device. Dust control method involves initially installing the water craft on tailing pit water surface; directing the water craft towards bank to area to be sprayed, in which working tool forms channel for water craft movement; pumping water from tailing pit into hydraulic monitor; adding reagent from vessel to water with the use of proportioning device and spraying the obtained liquid over dust-forming area. Water from tailing pit is used for above spraying operation and for water craft movement.

EFFECT: increased dust control efficiency.

2 cl, 2 dwg

FIELD: mining industry, particularly means or methods for preventing, binding, depositing, or removing dust and preventing explosions or fires.

SUBSTANCE: method involves treating dust-and-gas cloud with finely-dispersed ionized liquid, for instance with water, with the use of sprinkling plants alternately arranged so that ions of liquid spays generated by plants have opposite charges. The sprinkling plants are located outside zone of possible plant damage or are protected against explosion action. Sequence of plant alternation, ionicity, liquid quantity and liquid spraying pattern are determined from tests and calculations based on particular pit or underground mine blasting conditions.

EFFECT: reduced time of particle coagulation on liquid droplets and time of particle precipitation, possibility to reduce dust cloud propagation.

2 cl, 2 dwg

FIELD: mining industry, particularly to catch dust generated by machines and/or rigs in mines and tunnels.

SUBSTANCE: dust catcher comprises body with precipitation member formed as demister comprising moistening nozzles and drip catching means. Fan with drive is arranged near inlet/outlet side thereof. Moistening nozzles located in front of the demister in air flow direction are made as spaced multijet nozzles having separate sprayers, which form common sprayed curtain. The fan is installed in cleaned gas flow downstream the demister and drip catching means. The fan is arranged in case connected to dust catcher body. Demister is installed in contaminated air flow at inlet side and is arranged in inclined position. Upper edge thereof projects relatively lower edge. Air deflectors are arranged between the demister and drip catching means. Bottom sheet is inclined towards drip catching means. Multijet nozzles project towards contaminated air flow and are connected to load-bearing frame obliquely installed in accordance with demister inclination angle. Dust catcher is provided with separate vessels for additives, which pass through metering device into water-pipe. Mixer connected to water-pipe or built in water-pipe is installed downstream the metering device. Spraying device is arranged in front of moistening nozzles and demister with drip catching means. Spraying device comprises spraying heads, which create water mist and is connected with water source or with water-pipe and metering device with mixer. Dust-contaminated air flow is mixed with water mist and then the obtained sludge is gathered. Moist air is dried by water droplet separation and then the dried air is introduced in cleaned gas flow. Gases generated as a result of explosion are laden with water mist preliminarily mixed with additives, which create ecologically safe compositions with nitrose or similar gases formed during explosion.

EFFECT: increased operational efficiency and reduced dust catcher size.

20 cl, 8 dwg

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