SU829522A1 - Unit for discharging container with powder load - Google Patents

Description

(54) INSTALLATION FOR UNLOADING CAPACITY WITH POWD-SHIPPED LOAD

one

The invention relates to pneumatic conveying installations of the suction-pressure type, the use of which ensures the closed and dust-free unloading of powdery bulk materials from transport or storage tanks by the upper method.

A device for unloading bulk materials is known, comprising an elastic sluice chamber with inlet and outlet valves controlled by pneumatic cylinders 1.

The disadvantages of this device are the complexity and low design of the structure due to the presence of two bypass valves and a cyclically deformable elastic sluice chamber, as well as due to the limitations of its functions that solve the problem of gravitational pouring of loose material from the low pressure area to the high pressure area.

A device for feeding bulk material into an injection pipeline is known, which contains a feed hopper and a lock chamber divided by a conical partition in height into two parts. The baffle has an opening to transfer material,

overlapped valve. The lower part of the sluice chamber communicates with the discharge pipe f2.

The drawbacks of the device are significant losses of compressed air during the operation of the sluice chamber, caused by the need to periodically release it from the upper part of the chamber to the atmosphere, and are relatively narrow.

0 its scope, which is limited by the gravitational flow of bulk material from the low pressure area into the discharge transport pipeline.

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A known pneumatic injection conveying system consisting of a lock chamber for feeding bulk material into the injection pipeline and chamber chamber CSj connected thereto.

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The disadvantages of the system are its cumbersome and inability to use for the top method of unloading transport and storage tanks with powdery material.

Also known is the installation of unloading a container with powdered goods, consisting of a vertically located differential screw 0 located in the sleeve and connected to a cylindrical chamber equipped with a discharge pipe and aeration device f4. The closest in technical essence and the achieved result to the proposed is an installation for unloading a powder-filled container, comprising a feeder with a throat and a porous partition fixed in its lower part, mounted above the receiver-throat chamber with a filter, suction and discharge pipeline. For unloading the capacity of the vessel holds, two were used, operating according to the principle of chamber pumps. Feeders are installed stationary next to discharge capacity. The powder feeders were filled with a load by sucking it from a closed container equipped with an aeration bottom and stationary suction lines G5. However, this device is very cumbersome and has an extended suction pipe with bends, which creates great resistance to the transportation of the suction mixture and reduces the performance of the ACL-injecting system. The purpose of the invention is to increase the productivity of discharge. The goal is achieved by the fact that in an installation for unloading a container with a powdery load, including a feeder with a throat and fixed in. The lower part of the porous barrier, mounted above the mouth of the feeder with filter, the suction and discharge pipelines are equipped with a cone valve located at its mouth and located under the spring of the tension spring, while the feeder and box C are the filter is mounted in a single cylindrical housing, the suction pipe is located along the axis of the housing and fixed in its bottom and the cone valve is coaxially with the suction pipe. At the same time, the assembly can be equipped with a conical reflector fixed above the outlet hole of the suction pipe. FIG. 1 shows a structural diagram of the proposed installation; in fig. 2 shows the cone valve design with bellows on an enlarged scale, the lowest position; in fig. 3 shows the scheme of using the installation for unloading ships / in FIG. 4 shows the use of the installation for unloading wagons. The installation is a reservoir 1 consisting of upper suction 2 and lower injection 3 chambers. The upper and lower chambers are separated by a conical bottom 4 with a collar opening blocked by a conical valve 5, which is freely installed on the suction pipe b fixed to the bottom 7 of the discharge chamber. 3. Under the cone valve 5, there is a bellows 8, reinforced externally by the coil of the tension spring 9. Above the cone valve 5 a corrugated cuff 10 is fastened. Above the suction pipe is a cone diffuser 11 and a bag filter 12 with a neck 13 for sucked air. To the bellows 8 podvesche n. 14 with a tap 15. The plenum chamber 3 is equipped with a flange connector, into which a porous partition 16 is inserted, resting on the flange 17 in the central part, fixed on the suction pipe b. The space above the porous partition 16 is connected by a pipe 18 with a crane 19. In the side wall of the pressure chamber 3, a pressure pipe 20 is fixed with a crane 21. The lower end of this pipe is located at some distance from the porous partition 16. The pressure and suction chambers are connected by a pipe 22 with a crane 23. The beginning of the unloading should be preceded by the installation of the tank 1 with a lifting device on the transport container 24. Next, the conical bottom 7 is lowered into the conical recess 25 of the transport container 24, and the protruding tg -.: pysyvayu1dey pipe 6 is put into the expanded part of the stationary suction pipe 26. After installation, the weight of the tank is perceived by the flange 27 through the elastic gasket, ku 28, and the horizontal forces acting on it and the moment loads - by the cone 25 and the expanded part of the suction pipe Due to the intrinsic weight of the tank 1 and the gasket 28, a reliable seal is achieved between the stationary suction pipe 26 and the suction pipe 6, which is facilitated by the vacuum formed under the conical bottom 7 during installation operation. The discharged tank is equipped with an aero bottom 29 and a suction tube with a stepped broadening. The operation of the installation is carried out as follows. The powder cargo in the tank 24 is sucked through the pipes 26 and 6 into the suction chamber 2 by the aero-bottom 29 under the action of a vacuum created in it by a vacuum pump connected to the throat 13. At the same time, the cone valve 5 is closed and maintained with excessive air pressure in the bellows 8 supplied through the pipe 14 with the crane 15. A diffuser is used to better separate the cargo particles from the air and protect the filter 12 from direct exposure to the intake mixture. Thin air purification is performed using a filter 12 having a shaking device.

After filling the load of the suction chamber 2, the compressed air is released from the bellows 8. Under the weight of the load and under the influence of the tension spring 9, the cone valve 5 is lowered to the lower position, as a result of which an annular opening in the cone bottom 4 opens and the material of the discharge chamber 3 is filled In this case, the filling capacity of chamber 3 should be significantly higher than the capacity of suction of cargo from the tank 24. The air from chamber 3, replaced by the incoming material, is removed to the intake 2 through the nozzle 22 with a valve 23. After filling the chamber 3 with a load, the cone valve 5 with compressed air entering the bellows 8 is moved to its highest position, the taps 21 and 23 are closed, and the compressed air to the chamber 3 is started through conduit 18 through the porous partition 16. After reaching the rated air pressure in chamber 3, valve 21 opens, and the transported mixture is pumped out of chamber 3 via pipeline 20 to the warehouse. After releasing the chamber 3 from the load, the compressed air therein is discharged through the pipe 22 into the suction chamber 2, and the process B of the discharge chamber 3 is repeated. The suction process is carried out continuously.

A suction pipe 30 with an external thread at the upper end and a shoulder at the bottom, on which rubber washer 31 is located, is fastened on the suction pipe b (Fig. 2). To the guide pipe 30 Ischet-cone valve 5, to which with the help of bolts 32 With washers 33 and clamping strips 34 with a ring 35, a elastic airtight shell 36 of the bellows and a stretch spring 9 are fixed through the seal. Similarly, the shell of the bellows and spring 9 are fixed to the bottom 37 fixedly mounted on the suction pipe 6. Bottom

37 has a through hole in which the nozzle 14 is screwed. To the upper part of the cone valve 5 it is attached by means of a spring ring

38 cuff 10. Top cuffs mounted on the ring 39 with internal thread

and outside zatu chuck collar 40. Rings

39 screwed onto guide tube 30 and locked with nut 41,

The movement of the cone valve 5 to the extreme upper position (shown by the dash-dotted line) is carried out by supplying compressed air into the inner space of the bellows. In so doing, the bellows envelope 36 is expanded, the spring 9 is expanded, and the cuff 10 is compressed. Due to the cuff, the surface of the Hanpa B-slip pipe 30 is always bent from contact with the powder load.

Lowering the cone valve 5 in

0, the lower position is accomplished by venting air from the inner part of the bellows through the pipe 14 and under the action of the tension spring 9. The cone valve touches

5 with the shoulder of the guide tube 30 is damped by a rubber washer.

The unloading unit can be installed on the vessel by a crane 42, and the powder feed

In this case, cargo from the ship to the warehouse is carried out via pipeline 43. This loading system can be used for the delivery of bulk materials to existing ships of the type equipped with airframes and specially designed for these purposes ships of new design (Fig. 3).

Similarly, the unloading of tankers used for rewind si reverse

D directions powdered.

The proposed installation. It can be used for unloading cars, (Fig. 4) equipped with aero and suction pipes. Psda5 powdered cargo from the warehouse is provided through the injection pipeline 44.

By using the proposed installation, energy costs for unloading bulk materials from tanks by the upper method are reduced by an average of 30% and increase the productivity of unloading at the same energy costs by 25-30%.

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Claims (5)

1. Installation for unloading a container with rpi powder, 30M, switching on a feeder with a neck and a porous partition iKpennaya in its lower part, mounted above the feeder neck of a chamber with a filter, suction piping and carbonate. 1nP1 pipelines By the fact that, in order to increase productivity, the feeder is equipped with a cone valve located in its throat and bellows with a tension spring located under it, while the feeder and filter chamber are mounted in a single cylindrical housing, the suction pipe oprovo located on axis of the housing and fixed in its bottom and conical valve on the suction pipe. 2. Installation according to claim 1, characterized in that it is provided with a conical reflector fixed above the outlet of the suction pipe. Sources of information taken into account in the examination 1, USSR Author's Certificate O 502809, cl. B 65 G 53/40, 1973. 1 p p p p p p G I I I I M I I I I I  I I I HI I I I I I   U U III U U U 2. US patent 4118075, cl. 302-53, published in 1978. 3. US patent 3,644003,: cl. 302-53, published. 1972, five 4. USSR author's certificate According to the application 2664628 / 27-11, cl. B 63 B 35/30, 1978. 5. US Patent No. 3385635, cl. 302-53, published. 1968 (prototype) To Vakumatsnasu (P) Wiiod portiruchoy arrogance J7 f 9G .J CK / iad