Pneumatic transport plant

FIELD: pneumatic transport facilities.

SUBSTANCE: invention is designed for transportation of loose materials. Proposed plant for handling caking and lump powder materials has discharge device with ripper for breaking bridge formed in container, charger with bucket-wheel feeder for breaking lumps, reception of uniform dispensing, device for rubbing through and bringing material into aerated state in aerochamber combined with rubbing through device. According to invention, discharge device is essentially hydraulic cylinder on rod of which platform is secured with fitted on drive whose output shaft is connected with vertical shaft of ripper. Ripper is installed for lowering by means of hydraulic cylinder with cut-in drive and automatic movement upwards after reaching of limit switch in lower position with subsequent disconnection of ripper drive. Charger consists of cylindrical housing, upper cover, pneumovibrator with screen and aerobottom. Pneumovibrator of screen is brought out of housing behind its wall through flexible diaphragm flexible diaphragm. Aerobottom of charger is truncated cone lined from inner side with gas distributing needle-pierced rubber cloth and divided by means of pressure strip into two horizontal sections, each provided with union to feed compressed dried air. Upper cover is provided with charging hatch and branch pipe with filter to let out air into wet dust trap system. Rubbing through device consists of cylindrical housing with round holes in lower part and shaft passing in center of housing with elastic blades attached to cross-members to adjust distance from blades to wall of housing equipment with receiving hopper enclosing over perimeter part of housing with holes and assembled with said aerochamber for fluidizing said material getting into said pipeline.

EFFECT: provision of stable and unfailing operation of plant.

3 cl, 4 dwg

 

The invention relates to a pneumatic conveying device (pneumatic) systems. It can be used in many industries.

Detailed description of existing circuits and equipment pneumatic transport installations given Age, Auimatagi, Gasco, Any source "Pneumatic transport installation, Reference, publishing house "engineering", Leningrad, 1968

The pneumatic installation described in this guide are intended for transportation by pipelines loose materials without preliminary preparation.

Pneumotransport on a number of its advantages has found application in the manufacture of composite solid rocket fuel (STRT) for the interfacial transfer of powdery oxidizing agent (ON) and powdered oxidant additives (BELOW). A distinctive feature ON and UNDER is that they consist of a mixture of several fractions with a particle size of from 0.5 to 700 microns. Due to the small size of the particles and their ability to aggregation and caking upon the adsorption of small amounts of moisture (even hundredths of a percent) difficulties of application of the known pneumatic installations in part uniform and stable input and UNDER in the transport pipeline and transmission on it.

Known patent RU 220207 C2, 20.04.2003 adopted for the prototype, which describes the operation of the pneumatic installation, intended to supply bulk prone to svoeobrazoval materials containing razgruzitel, cyclones, piping for conveying materials in razgruzitel by means of compressed air and a vacuum pump, an unloading device for loosening the material in the container, and discharging it in zagrosian, rubbing apparatus for receiving material from saprosites, aerocamera for fluidization of the material coming into the pipeline.

This patent describes the effects on recyclable material at different stages of technological operations, but does not describe features of the constructive design of the mechanisms by which achieves the desired effect during transportation of the material.

To work the pneumatic installation in the manufacture STRT has very strict requirements. These requirements are due to:

1. The need to maintain a constant concentration of transportation and UNDER in the air to maintain its particle size distribution, thereby obespecheniya predictable physico-mechanical and ballistic performance STRT.

In turn, a constant concentration of the mixture can be achieved in the presence of feeder complianc the aqueous actions for and UNDER and constant parameters of the air supply.

2. The need for the smooth operation of the pneumatic installation. An unexpected break in process of a pneumatic transportation and UNDER is not valid, as it can lead to stop the process at subsequent manufacturing operations START with the emergency situation due to increased viscosity of the fuel mass until the beginning of the curing process.

The technical purpose of this invention is the provision of stable and uninterrupted operation of the pneumatic installation in interphase transfer powdered oxidizer and powdered oxidant additives in the manufacture of composite solid rocket fuel by the use of special actuators in the apparatus installation. These special mechanisms affect recyclable material and ensure the stable operation of the pneumatic installation.

The technical result is achieved due to the fact that in the pneumatic transport installation comprising razgruzitel, cyclones, piping for conveying material through the vacuum pump in razgruzitel, an unloading device for loosening the material in the container, and discharging them into zagrosian, rubbing apparatus for receiving materials from saprosites, aerocamera for fluidization of these materials, Postup is participating in the said pipeline, the following technical solutions:

handling device is a hydraulic cylinder on the piston rod which is fixed to the pad placed on the actuator, the output shaft of which is connected to a vertical shaft Ripper installed on the shaft end dvukhzaryadnym auger, and the Ripper is installed with the possibility of lowering by means of hydraulic cylinder-enabled drive and automatically move upwards after reaching the bottom position limit switch and then disable the mentioned drive Ripper, and Playground with actuator has a latch roller which, when the movement of the rod moves through the channel in the guide and at the same time prevents the rotation of the Ripper relative to the vertical axis of the cylinder;

- zagrosian consists of a cylindrical body, a top cover, pneumatic vibrator with bars, aerodrome, and the pneumatic vibrator grilles removed from the wall of the housing through a flexible diaphragm, aerodrome of saprosites is a truncated cone, covered with the inner side naturally punctured by a needle with a rubber blade and separated by means of the retainer plate into two horizontal sections, each section provided with a socket for the supply of compressed dry air, the top cover has a charging port and a pipe with a filter DL the exhaust system wet dust collector;

- cleaning apparatus consists of a cylindrical body with circular holes at the bottom, in the center passes the shaft with an elastic blade attached to the crosses with adjustable distance from the blades to the wall of the casing, provided with a receiving bin, covering the perimeter of the chassis with the holes and combined with aerocamera for fluidization of these materials received in said tubing;

- naturally canvas in sections aerodrome of saprosites installed with the possibility of a deflection from 75 mm to 125 mm under pressure of the air supplied under this naturally canvas in section aerodrome;

- in the area of the discharge Luc saprosites installed rotary feeder.

The essence of the invention is illustrated by the following drawings.

1 shows a process diagram of the pneumatic transport installation:

1 - handling device; 2 - zagrosian; 3 - rotary feeder; 4 - Protochny apparatus; 5 - aerocamera; 6 - pipe; 7 - razgruzitel; 8, 10, 15 - cyclones; 9 - rotary bolt; 11 - air duct; 12 - return valve; 13 - vacuum pump; 14 - container; 16 - wet the filter.

Figure 2 shows an unloading device:

17 is a hydraulic cylinder; an 18 - wheel drive; 19 - shaft Ripper; 20 - latch; 21 - aiming is I; 22 - yoke; 23andthe 23b- end switches.

Figure 3 shows a General view of saprosites:

24 - block; 25 aerodrome; 26 - lid; 27 - vibroresearch; 28 - pneumatic vibrator; 29 - strap; 30 - fitting; 31 - boot hatch; 32 - filter; 33 - tube; 34 - Luc.

Figure 4 shows a cleaning device:

5 - aerocamera; 35 - block; 36 - end cover; 37 - rotor; 38 drive; 39 - inspection hatch; 40 - receiving hopper; 41 - porous partition; 42 - the bottom.

According to the scheme given in figure 1, and UNDER supplied in the container 14, which is installed and fixed under the Ripper discharge device 1. Using this device produce loosening and fracture of vault and UNDER in the conical part of the container and the material is unloaded in zagrosian 2. On the grid in zagrustila is the destruction of lumps and UNDER with subsequent transfer gateway feeder 3 in the cleaning apparatus 4. It carried out the final destruction of OVER and UNDER with the bursting of the material elastic blades through the holes in aerocamera 5. When filing in aerocamera compressed air and UNDER passes in a fluidized state and, when the vacuum pump 13 is caught by the air stream and transported through the pipeline 6 in razgruzitel 7. It separates the main mass and UNDER from air and precipitation. The exhaust air is additionally is exempt from partially carry out particle and UNDER with their deposition in the cyclone and return feeder in razgruzitel. The air duct passing through the cyclone 10, enters the wet filter 16, where finally cleaned from dust particles and UNDER and through the vacuum pump is discharged into the atmosphere.

The discharge device shown in figure 2. It consists of a vertically arranged hydraulic cylinder 17, the piston rod which has a flat surface placed on it by the actuator 18, consisting of a geared motor. The output shaft of the gearbox is connected to the shaft of the Ripper 19. Ripper made in the form of the screw, lower the working part of which is made dvuhaktnoy. To prevent reversal of the cultivator includes a latch 20, which includes a roller moving along the guide 21.

The work of unloading and carried out UNDER the following way. When the top position of the Ripper set underneath the container, the container when you open the hatch relative to the center shaft of the Ripper and fixed by the clamp 22. The installation of a Ripper in the upper position is carried out by the flow of oil in the lower cylinder chamber 17. For lowering down serves the compressed air in the upper cylinder chamber, at the same time drive the Ripper. With this Ripper, rotating, drops down and loosens and UNDER. When he reached the lower position, Ripper signal lower limit switch 23bautomatically goes up and the OS is yavlyaetsya, reaching the top of the switch 23and. The process of unloading and UNDER performed remotely.

In unloaded from the container and UNDER are lumps which you must destroy to perform subsequent operations. This operation is carried out in zagrustila, which, in addition, performs additional functions: accumulation unloaded from the container of the product and even spending it by the feeder. General view of saprosites shown in figure 3.

Zagrosian consists of a cylindrical body 24, aerodrome 25 and cover 26. Inside the case on the straps hanging vibroresearch 27, which is driven by a pneumatic vibrator 28. The pneumatic vibrator removed from the wall of the housing through an elastic diaphragm. Aerodrome is a truncated cone, covered with the inner side of the gas rubber canvas. In rubber cloth with holes by means of a puncture needle. The space between the cone and the cloth presser bar 29 is divided into two horizontal sections, which through the fittings 30 summed up the dried compressed air. The cover 26 has a charging port 31. On the second hatch stretched filter 32 and a pipe 33 to exhaust air to the system is a wet dust collector. For inspection and cleaning of saprosites in the cylindrical housing has a hatch 34.

Paged to and from the container UNDER post the Paeth through the loading hatch 31, sifted through vaporised 27 and accumulates in zagrustila. To improve the continuous ingress and UNDER in the rotary feeder 3 under the rubber cloth, aeroglide is supplied compressed air. Experimental work established that continuous unloading and UNDER of saprosites is provided by compressed air from the pressure at which the deflection of the blade is from 75 mm to 125 mm

For uniform supply pipeline transported material-feeding and UNDER must be pre-aeration them with the air supply. For quality aeration requires limiting the maximum size of particles or lumps of material. When developing transportation options and UNDER optimal conditions of transportation are provided with the wiping material through the perforated sheet with a hole diameter of 5 mm or less.

To perform this operation, use a cleaning apparatus, which is shown in figure 4. Cleaning apparatus consists of a casing 35, the end cap 36, the rotor 37, aerocamera 5, the actuator 38. The casing is cylindrical, the lower part has a round hole. The case sides are provided with an inspection hatches 39 for ease of maintenance. In the center of the cylindrical body passes the rotor shaft 37 with elastic blades attached to the crosses with the possibility of the regulation of the distance from the blades to the casing wall, equipped with a receiving bin, covering the perimeter of the chassis with the holes and combined with aerocamera 5. Aerocamera 5 consists of a receiving hopper 40, porous wall 41 and bottom 42.

Tests handling device, saprosites, airlock feeder, rubbing apparatus at the FSUE "Perm plant. After S.M.Kirov" confirmed their performance.

1. Pneumatic transport installation of bulk prone to svoeobrazoval materials containing razgruzitel, cyclones, piping for conveying material through the vacuum pump in razgruzitel, an unloading device for loosening the material in the container, and discharging them into zagrosian, rubbing apparatus for receiving materials from saprosites, aerocamera for fluidization of these materials coming in the pipeline, characterized in that the discharge device is a hydraulic cylinder on the piston rod which is fixed to the pad placed on the actuator, the output shaft of which is connected to a vertical shaft Ripper installed on the shaft end dvukhzaryadnym auger, and the Ripper installed with the possibility of lowering by means of hydraulic cylinder-enabled drive and automatically move upwards after reaching the bottom position limit switch with the placenta is brilliant off-mentioned drive Ripper, and Playground with actuator has a latch roller which, when the movement of the rod moves through the channel in the guide and at the same time prevents the rotation of the Ripper relative to the vertical axis of the cylinder, zagrosian consists of a cylindrical body, a top cover, pneumatic vibrator with bars, aerodrome, and the pneumatic vibrator grilles removed from the wall of the housing through a flexible diaphragm, aerodrome of saprosites is a truncated cone, covered with the inner side naturally punctured by a needle with a rubber blade and separated by means of the retainer plate into two horizontal sections, each section provided with a socket for the supply of compressed dry air, the top cover has a charging port and a pipe with filter to exhaust air in the system wet dust collector, and a cleaning apparatus consists of a cylindrical body with circular holes at the bottom, in the center passes the shaft with an elastic blade attached to the crosses with the possibility of regulating the distance of the blades to the wall of the casing, provided with a receiving bin, covering the perimeter of the chassis with the holes and combined with the aforementioned aerocamera for fluidization of these materials coming in the pipeline.

2. Pneumatic transport set the URC according to claim 1, characterized in that the gas distribution canvas in aerodrome installed with the possibility of a deflection from 75 to 125 mm under the pressure of the air supplied under this naturally canvas in section aerodrome of saprosites.

3. Pneumatic transport installation according to claim 1, characterized in that in the zone of discharge Luc saprosites set rotary feeder.



 

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4 cl, 7 dwg

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