Device to deliver stiff loose material into feed pipeline

FIELD: pneumatic transport.

SUBSTANCE: proposed device 2 for delivering stiff loose material into delivery pipeline has swirl chamber 4 made for connection of feed pipeline 6 from outside and forming inlet hole 8 for loose material in side wall of swirl chamber 4, and also device to build gas flow inside swirl chamber 4 which is directed to side of said inlet hole 8. Porous plate is fitted in side wall of swirl chamber 4 additionally close to periphery of inlet hole 8 through which loosening gas can be delivered into swirl chamber 4.

EFFECT: prevention of formation of material bridges in zone of inlet hole.

10 cl, 5 dwg

 

The present invention relates to a device for supplying an inactive granular material in the supply pipe.

A similar device is used, for example, in the device for injection of polymeric materials in a shaft furnace, intended for injection in the shaft kiln waste polymer materials instead of crushed coal. To this end in the bin shredded waste polymeric materials are provided in the supply pipe and is transported under high pressure to the tuyeres located in the wall of the shaft furnace.

As an example, known devices for feeding granular materials under pressure into the transport pipeline can be called cellular vane gateways placed underneath the feed hopper with bulk material. In such gateways, their bladed shutter, consisting of a hub and several radially protruding from her blades, is mounted for rotation in the respective housing and divides it into several compartments or chambers. Bulk material falls into one of these chambers through the inlet opening provided on the top side of the housing bladed shutter, and after rotation of the shutter blade by an angle equal to, for example, 180°enters the supply pipe through the outlet provided on the lower side of the casing is A. Cellular vane gateway such constructions are described, for example, in the application WO 96/22241.

The main problems with the operation of such mechanical devices feed material occur mainly during transportation sedentary, characterized by some of the fiber bulk material such as, for example, waste polymeric materials. Such material moving blades blade bolt quite easily compacted when the rotation of the shutter blade under the action of its own weight, which further reduces its mobility and significantly complicates or even makes impossible its flow in the supply pipe. Such compacting of the granular material and reduce its mobility is the cause of frequent clogging of the feeder, resulting in frequent violations of the continuity of the installation. In addition, the condensed material is passed, respectively, is extruded into the spaces between the blades of the shutter blade and the housing, which may lead to stoppage of the feeder and its downtime.

In order to avoid the above described problems in the LU-A-90217 was proposed device with vortex chamber in which sedentary bulk material is transferred in the loosened state. In this device, the supply pipe connected to the side wall of the vortex is the first camera with the formation of this side wall inlets supplied to the bulk material. Before this entrance hole in the vortex chamber is designed to supply compressed gas to the nozzle, allowing you to create in the process of operation of the device directed toward the inlet in the supply pipe of the gas flow. Education zone of turbulence directly in front of the entrance hole in the feed line effectively prevents the seal sedentary granular material prior to its entering the supply pipe. Thus the lateral location of the inlet excludes nerazlichennoe material in the supply pipe under its own weight. Thus can be almost totally avoided the above clogging installation condensed material and related her downtime. However, as was found in the practical operation of such devices around the inlet of the continuously formed material deposits, which over time causes the system to hang loose material between the nozzle for the gas and the wall section of the vortex chamber, which directly surrounds the inlet.

Based on the foregoing, the present invention was based on the task to develop such a device for supplying an inactive granular material in the supply pipe, which would allow almost is fully to avoid the above described problems.

This task is solved by a device for supplying an inactive granular material in the supply pipe, having a vortex chamber with connection to her outside of a feed line with education in the side wall of this swirl chamber inlet for granular material and a device for creating inside the vortex chamber of the gas flow directed toward the specified input holes. The distinction proposed in the invention device is that in the side wall of the vortex chamber at the periphery of the inlet is porous plate, allowing flow through it in a vortex chamber loosening the fluid.

In the device of this design the gas flow creates in front of the side inlet feed pipe zone of turbulence, in which sedentary bulk material is transferred in the loosened state. Thereby effectively prevents the seal sedentary granular material prior to its entering the supply pipe. This loosened the bulk material due to the orientation of the gas flow in the intake gets directed to the side of the outlet component of the speed and the replaced it.

Submission loosening the fluid, for example razlichiya the future of gas through a porous plate or the cover plate, located near the entrance holes on its periphery, prevents in this zone, the deposition of the granular material on the side wall of the vortex chamber. Thereby effectively prevents the hang of bulk material between the wall of the vortex chamber and nozzle for gas supply, and access into the inlet during operation always remains free.

Since the zone of turbulence is formed in the vortex chamber is usually at the expense of filing a loosening of gas from below the porous plate or the cover plate for the filing of such a gas is preferably placed under the entrance hole. In order to avoid freezing of the bulk material along the periphery of the inlet of the porous plate or the cover plate may consist of, for example, from several separate parts, which are arranged around the inlet. In another embodiment, a porous plate or the cover plate may be made in the form of circular rings.

When submitting loosening the fluid in the vortex chamber through a porous plate or pickguard preferably, this fluid is first received in the entrance chamber, which is located in the side wall of the vortex chamber near the inlet, in this case, the input chamber is closed on the inner side of the vortex chamber, a porous plate or N. the masonry, separating it from the internal space of this swirl chamber, and executed with a possibility of it loosening gas. In this case it is possible to provide a uniform flow of fluid across the surface area of the porous plate or plates.

Device for creating a flow of gas can have a nozzle for gas supply, which is connected to the compressed gas and which is located in the vortex chamber so that the imaginary continuation of its axis coincides with the axis of the feed pipe. When this nozzle for gas supply may be, for example, diagonally, respectively, radially opposite the inlet that provides movement of the gas flow through the vortex chamber is practically across it.

Nozzle for gas supply is preferably movable along its axis in such a way that it allows you to close the inlet opening in the side wall of the vortex chamber. To this end, for example, is directed to the inlet end side of the nozzle for gas supply will agree on the form and diameter from the inlet of the delivery pipe, making it the nozzle is in its extended all the way into the side wall of the vortex chamber position adjacent to the edges of the inlet and closes it. Thus the supply pipe for a period of downtime of the installation or before the start of egenie contact with him at this time, the bulk material can be tightly overlap without education in this feed line zones, in which there would be a transport stream and would occur associated compaction of the granular material. These zones, which, for example, using simple gates are formed between such valve and the closest to her feeder carrier gas in the pipeline, are caused by regular jamming or clogging of the feed line on this plot. The same overlap of the inlet feed pipe nozzle for gas supply eliminates the formation of such zones in the absence of a transport stream.

In addition, the execution of the nozzle for gas supply movable along its axis allows you to change accordingly to regulate the distance between him and the entrance hole in the side wall of the vortex chamber. In accordance with this comes the opportunity to change or adjust the length of the generated before the inlet of the zone of turbulence, and thereby to regulate the amount transferred in the loosened state of the material. With increasing distance between the inlet and nozzle for gas supply to increase the size of the resulting zone of turbulence and thereby increases the amount of loosened material.

Nozzle for gas supply preferably in the form of a Laval nozzle, whereby the flow rate of the gas reaches near the STI sound. The use of such a Laval nozzle allows extremely simple by adjusting the flow rate of gas through it by simple adjustment of the gas pressure at the entrance to this nozzle independently of the pressure prevailing in the vortex chamber. In addition, the use of such Laval nozzle allows precisely to Orient coming out of the gas flow in the intake, which (gas flow) due to its high speed provides an effective moving bulk material in the supply pipe even if the distance between the nozzle and the inlet.

According to one preferred options proposed in the invention, the device has multiple nozzles for dosed supply of gas, which are located in the side wall of the vortex chamber around the feed pipe and the end of it. Such nozzles for dosed supply of gas is preferably positioned in such a way that they can be included in the supply pipe perpendicular to its axis. In another embodiment, a nozzle for dosed supply of gas can be positioned so that they are included in the supply pipe with an inclination to its axis in the direction of the transport stream.

The gas required for the further transportation of material in a feed line that is supplied in metered live in the Islands through such nozzle in the supply pipe at the point located along the flow directly behind the entrance hole. This granular material immediately after falling into the inlet due to its transfer by the gas flow generated in the vortex chamber, is captured by the flow of the metered through the nozzle of the gas and dragged them moves further along the supply pipe. This prevents the formation of zones, in which a portion of the bulk material could be deposited from transporting his flow and compaction. It should be noted that changing the number of the metered gas is changed and the number of floating material. Accordingly to regulate the flow of bulk material through the supply pipe can flow regulation dosed through the gas nozzle.

A vortex chamber preferably in the form of capacity, designed to work under pressure, that allows you to feed the bulk material in the supply pipe under pressure. In this case, all the swirl chamber will work under high pressure.

In addition, according to another preferred variant of the swirl chamber is at the bottom of the porous plate, allowing flow through him in a vortex chamber loosening gas. When the flow through this porous plate siraudeau agent sedentary bulk materialmaterial in the whole volume of the vortex chamber in a fluidized state, thereby prevents the compaction of this material.

Below the invention is described in more detail on the example of one of the variants of its implementation with reference to the accompanying drawings on which is shown:

figure 1 is - a longitudinal incision is made on the preferred option feeder sedentary granular material in the supply pipe;

figure 2 is a view in plan is shown in figure 1 device;

figure 3 is an enlarged image is shown in figure 1 of the device in the area of the inlet;

figure 4 - one of the embodiments capacity for the injection of granular material having multiple devices for feeding sedentary granular material in the supply pipe;

figure 5 is a section of the lower part shown in figure 4 tanks for injection of the bulk material.

Figure 1 is a longitudinal section shows a device 2 for supplying an inactive granular material in the supply pipe, is made on the preferred option. The main elements of such devices are the swirl chamber 4, which has, for example, a cylindrical shape, and which can be externally connected supply pipe 6 with the formation in the wall of the vortex chamber 4, the inlet 8 is supplied to the bulk material.

With this purpose, in the present embodiment, in the wall of the vortex Cham is s 4 side welded pipe 10, to which the supply pipe 6 is connected by the flange 12 (see also figure 3). In the pipe 10 directly behind the entrance hole 8, when viewed in the direction of flow of the bulk material (indicated by the arrow 14), made surrounding the supply pipe 6 of the annular channel 16, in which the outside through one or more connections 18 (see figure 2) in dosed quantities to supply gas.

In addition, the nozzle 10 is made of several located around the feed pipe 6 nozzles 20 for dosed supply of gas, each of which departs from the annular channel 16 in the direction of a feed line 6 is perpendicular to its axis and terminates it outputs openings. The dosing gas during its flow under high pressure passes from the annular channel 16 through the outlet nozzle in the supply pipe 6, forming a transport stream for floating granular material. Because of this loose material falling through the inlet 8 into the supply pipe 6, is captured directly behind the entrance hole transporting this thread and move them further along the pipeline.

The nozzle 10 is made covering the inlet opening 8 of the annular channel open in the direction of the vortex chamber. On the inner side of the vortex chamber, this annular channel closed ring gas pipeline is ICEVI porous plate or plate 24, separating it from the internal space of this swirl chamber, with the formation of an annular entrance chamber 26. This input chamber through the connection 28 is fed loosening the gas stream which passes through a porous plate or the cover plate 24 in a vortex chamber. Thereby effectively preventing the formation of sediments and associated hanging loose material near the inlet 8.

For feeding granular material into the inlet of the device 2 is provided by the nozzle 30 for supplying gas with which the process operation of the device creates a directional flow of gas moving at high speed in the direction of the inlet 8. As such nozzle 30 for supplying gas can be used, for example, the Laval nozzle located in the vortex chamber 4 is radially opposite the inlet 8 so that the imaginary continuation of the axis 32 of the nozzle coincides with the axis of the feed pipe 6.

The nozzle 30 for supplying gas to a gas-feeding pipe 34 and, for example, turning accession is connected to the compressed gas, which through the nozzle 30 can be fed compressed gas. With this purpose, a gas-feeding pipe 34 is preferably removed from the vortex chamber 4 through the opening in the inserted in the wall of the pipe 36 for sealing a gas-feeding pipe is relatively walls of the holes in the pipe can be used, for example, the seal 38. In the section between the seal 38 and the vortex chamber 4 in the nozzle 36 is preferably covering the opening annular groove 40, in which the outside through joining 42 can be submitted locking gas, forming gas valve. Such locking prevents gas during operation of the device hit the granular material into the gap between the walls of the holes in the pipe and the seal and the wall of the gas-feeding pipe.

When the supply of compressed gas through the nozzle 30 within the vortex chamber 4 generates a gas flow, which is in front of the entrance opening 8 forms a zone of turbulence. In this zone of turbulence sedentary granular material is loosened and under the action of gas flow, oriented in the direction of the inlet 8, acquires also directed towards the outlet 8 component of velocity, resulting vorticity (fluidized bed) material and is pressed into this inlet.

Using a Laval nozzle to direct gas flow allows, on the one hand, is extremely simple by adjusting the gas flow through the nozzle 30 by simple adjustment of the gas pressure at the entrance to this nozzle independently of the pressure prevailing in the vortex chamber 4. On the other hand, the use of such a Laval nozzle allows for precisely guiding the AMB coming out of the gas stream in the direction of the inlet 8, which (gas flow) due to its high speed provides an effective moving bulk material in the supply pipe 6 even if the distance between the nozzle and the inlet.

The nozzle 30 for supplying gas is preferably movable along its axis, allowing you to change accordingly to regulate the distance between him and the entrance hole 8 in the side wall of the vortex chamber. In the form shown in the drawing, the embodiment of the nozzle device 30 for gas supply and coaxially adjacent gas supply pipe 34 is installed movably in the bore of the nozzle 36. In this case, the axial movement of the nozzle for gas supply is provided, for example, the actuator 48 of the axial type, which is attached to the rear end 44 of the gas-feeding pipe. In another embodiment, the rear end of the gas supplying pipe can be provided worm thread that interacts with a corresponding internal thread in the plate, that is mounted on the pipe. When casting a gas-feeding pipe 34 in rotation around its own axis with corresponding drive this gas-feeding pipe 34 along with mounted on the nozzle 30 depending on the direction of its rotation or "screwed" further into the vortex chamber, or "come unscrewed" from it. Adjustable in this way the distance between the input opened the eat 8 and nozzle for gas supply may be, for example, from 0 to 30 mm

It should be noted that the plate is threaded, preferably located at some distance from the vortex chamber 4 with the purpose of the worm thread when pushed fully nozzle 30 has not reached the gland 38.

The nozzle 30 for supplying gas preferably so that it is allowed to close by the type of tube inlet opening 8 in the side wall of the vortex chamber. To this end, for example, is directed to the inlet end side 50 of the nozzle 30 for supplying gas will agree on the shape and diameter of the entrance hole 8 feed pipe 6, so that the nozzle is in its extended all the way into the side wall of the vortex chamber 4 position adjacent to the edges of the inlet 8 and closes it. This position of the nozzle for gas supply indicated in figure 1 with a dashed line.

Thus the supply pipe 6 for the period of downtime of the installation or before its start in order to avoid contact with him at this time, the bulk material can be tightly overlap without education in this feed line 6 zones, in which there would be a transport stream and would occur associated compaction of the granular material. These zones, which, for example, using simple gates are formed between such valve and the closest to her device metered gas flow in pipes the wire, cause regular jamming or clogging of the feed line on this plot. The same overlap of the inlet feed pipe nozzle for gas supply eliminates the formation of such zones in the absence of a transport stream.

A vortex chamber 4 preferably in the form is designed to work under pressure capacity that allows you to feed the bulk material in the supply pipe under pressure. In this case, all the swirl chamber can operate at high pressure, the amount of which depending on the particular purpose proposed in the invention device can typically reach 10 bar. In addition, the swirl chamber 4 preferably has in its lower part of the porous plate 52 through which the vortex chamber can be fed loosening the gas. Such porous plate 52 is mounted, for example, on the inner side of the bottom blank flange 54, which closes the bottom of the vortex chamber 4 and which, in turn, removable bolted to the lower flange of the vortex chamber, which passes its lateral wall. Through this blank flange 54 passes gas supplying line 56, terminating in the inlet chamber 58 between the blind flange 54 and the porous plate 52.

When the flow through the porous plate 52 received in a gas-feeding line 56 siraudeau gas sedentary si is UCI material is held in the whole volume of the vortex chamber in a fluidized state, thereby prevents the compaction of this material.

It should be noted that the Laval nozzle, and a wall section surrounding the inlet opening 8, preferably of hardened material such as carbide or ceramic, with the aim to reduce to the minimum possible level of abrasive wear of the respective surfaces under the action moving with a high velocity particles of the bulk material.

It should also be noted that the work proposed in the invention device, a vortex chamber can be set, for example, directly beneath the feed hopper, filled or filled with bulk material. In this case, the granular material is fed into the vortex chamber "gravity", i.e. directly under its own gravity. With this in mind, the diameter of the vortex chamber 4 should be selected so as not to interfere with sliding of the granular material in the feed hopper.

According to another variant of the vortex chamber is invited to perform as an integral component of the capacity for blowing of the granular material. Such an embodiment is shown in figure 4 and 5. In this case we are talking about the capacity for the injection of the bulk material, intended for simultaneous supply to 24 different feed line. This capacity for blowing the granular material is predstavljaet a designed to work under the pressure vessel 60 is essentially cylindrical in shape, which is closed at its upper side and which is equipped with various nozzles for connection of pipelines for compressed, respectively loosening gas. The bottom of the vessel 60 is made conically concave inside of it forms, resulting in a circular cross-section of such a vessel 60 in its lower part 62 continuously decreases from top to bottom, and the interior is in this lower part 62 thereby narrowing downwards. In other words, at the bottom of this cylindrical vessel formed a kind of circular funnel 64, moving on which is designed to work under the pressure of the vessel bulk material falls ultimately into the lower annular vortex chamber 66. This annular vortex chamber 66 in the manner described above radially inside 24 connected feed line 106, in front of which the inside of the vortex chamber is located a corresponding number of nozzles 130 for gas supply, which is supplied to the vortex chamber radially outside and mounted in the wall.

1. The feeder sedentary granular material in the supply pipe, having a vortex chamber with connection to her outside of a feed line with education in the side wall of this swirl chamber inlet for granular material and device for the creation inside vikhreva the chamber gas flow, directed towards the specified input openings, characterized in that the side wall of the vortex chamber at the periphery of the inlet is porous plate, allowing flow through it in a vortex chamber loosening the fluid.

2. The device according to claim 1, characterized in that the porous plate consists of several separate parts, which are arranged around the inlet.

3. The device according to claim 1, characterized in that the porous plate is made in the form of circular rings.

4. Device according to any one of claims 1 to 3, characterized in that an input chamber, which is located in the side wall of the vortex chamber near the inlet, this inlet chamber is closed on the inner side of the vortex chamber, a porous plate, separating it from the internal space of this swirl chamber, and executed with a possibility of it loosening of gas.

5. Device according to any one of claims 1 to 4, characterized in that the device for generating gas flow has a nozzle for gas supply, which is connected to the compressed gas and which is located in the vortex chamber so that the imaginary continuation of its axis coincides with the axis of the feed line.

6. The device according to claim 5, characterized in that the nozzle for gas supply is made all the author along its axis so it allows you to close the inlet opening in the side wall of the vortex chamber.

7. The device according to claim 5 or 6, characterized in that the nozzle for gas supply is made in the form of a Laval nozzle, whereby the flow rate of the gas reaches the speed of sound.

8. Device according to any one of the preceding paragraphs, characterized in that there are several nozzles for dosed supply of gas, which are arranged around the feed pipe and the end of it.

9. Device according to any one of the preceding paragraphs, characterized in that the swirl chamber made in the form of capacity, designed to work under pressure.

10. Device according to any one of the preceding paragraphs, characterized in that the swirl chamber is at the bottom of the porous plate, allowing flow through him in a vortex chamber loosening of gas.



 

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