RU197536U1 - PNEUMOTRANSPORT RECEIVER - Google Patents

Abstract

The proposed utility models relates to a power system, to pneumatically transporting fuel pellets to a device for burning them, and more specifically to a receiving device for pneumatic conveying. The device includes a suction pipe, a return air pipe located above the suction pipe, and a separation disk installed between the intake pipe and the return air pipe. Additionally, the device contains a cyclone open from below and located above the separation disk on the same axis with it, connected to the return air pipe. The technical result from the use of the utility model is to increase the productivity of the receiving device and the efficiency of using the warehouse area due to a more uniform distribution of return air, more efficient use of energy from return air for tedding and aeration of the slopes of the pellet funnel, more uniform fence of pellets along the sides of the device. 1 n p. and 1 s. P. f-ly, 3 ill.

Description

The proposed utility model relates to a power system, to pneumatically transporting fuel pellets to a device for burning them, and more specifically to a receiving device for pneumatic conveying.

Many suction pneumatic conveying systems are known, for example, for grain, cement, etc.

A cardinal difference between pneumatic conveying for fuel pellets from most similar systems is the use of suction devices with a closed-loop circuit, in which the used air is returned to the material intake point. In this way, three tasks are solved: firstly, there is no dust (ecology, no filters), secondly, there is no air flow between rooms (fire safety), and thirdly, the energy of return air is used for tedding and aeration of fuel material.

Known pneumatic feed system for a heating installation (EP 1052456 A1, class B65G53 / 26, F23K3 / 02, publ. 11/15/2000). The system has a probe type receiver. The receiving device consists of a suction pipe located horizontally and located directly above it, a horizontal pipe of return air. A pitched roof is made above the pipes with the formation of a kind of house - a probe. A funnel of pellets is formed under the roof, flowing down the natural slope at an angle of 40-45 ° to the horizontal. The air from the return pipe, partly directly, flows into the suction pipe, and partly turns the pellet slopes of the funnel and, capturing the pellets, also enters the intake pipe. The formation of a funnel that is not filled with pellets guarantees the flow of air from the return pipe to the suction pipe, which contributes to the reliability of the inclusion of the receiving device in the work (start).

The disadvantages of this device is its small performance, due to the fact that the return air, partially scattering uselessly, does not evenly enter the suction pipe together with pellets.

The closest in technical essence and the achieved technical result to the proposed utility model is a receiving device for extracting bulk material from the storage using a suction conveyor unit, protected by patent AT 513945 A1, cl. B65G53 / 28, B65G53 / 42, F23K3 / 02, taken as the closest analogue (prototype).

The prototype suction device comprises a suction nozzle located horizontally, and a return air nozzle located horizontally above the suction nozzle, a roof made in the form of a truncated cone above the nozzles, a horizontal separating disk located between the suction nozzle and the return air nozzle. In this case, the conical roof and the horizontal dividing disk are located on the same axis. A cone funnel of pellets forms under the device. The air flowing from the return air pipe into the suction one, enveloping the horizontal separation disk, additionally agitates and aerates the walls of the funnel. The device also has a variety of angular reflectors for a more uniform distribution of return air and, accordingly, a more uniform intake of pellets along the sides of the roof of the device. As a result, the performance of the device in comparison with the above analogue increases significantly.

The disadvantages of the receiving device for the prototype include the fact that the energy of the return air is not used effectively enough for tedding and aeration of the slopes of the pellet funnel. In addition, the return air is not evenly distributed on the sides of the receiving device. As a result, the performance of the receiving device of the prototype is satisfactory, but not optimal.

The objective of the proposed utility model is the improvement of the design of the receiving device of pneumatic transport.

     The technical result from the use of the utility model is to increase the productivity of the receiving device and the efficiency of using the warehouse area due to more efficient use of return air energy for tedding and aeration of the slopes of the pellet funnel, more uniform distribution of return air and, accordingly, more uniform intake of pellets along the sides of the device.

     This object is achieved in that in the pneumatic conveying device containing a suction pipe, a return air pipe located above the suction pipe, and a separation disk installed between the intake pipe and the return air pipe, further comprises a cyclone open from below and located on the same axis with the separation pipe a disk connected to the return air pipe; the separation disk and the return air cyclone are mounted on a vertical pipe.

In FIG. 1 is a longitudinal sectional drawing of a pneumatic conveying receiver.

In FIG. 2 is a cross-sectional drawing of a pneumatic conveying receiver.

In FIG. 3 is a drawing of a horizontal section of a pneumatic transport receiving device.

Structurally, the pneumatic transport receiving device of FIG. 1-3 contains:

1 - suction pipe;

2 - return air pipe;

3 - a separation disk;

4 - cyclone return air;

5 - pipe mounting the separation disk and the cyclone;

6 - conical walls of the pellet funnel.

The suction pipe 1 and the return air pipe 2 are arranged horizontally, and the return air pipe 2 is located above the suction pipe 1.

Between the suction pipe 1 and the return air pipe 2, a separation disk 3 is mounted horizontally.

The return air pipe 2 is connected to the cyclone 4.

The cyclone 4 is made open at the bottom and is located on the same axis with the separation disk 3.

The separation disk 3 and the cyclone 4 are mounted on a vertical pipe 5 under each other.

The cyclone 4 connected to the return air pipe 2 is rotatable on the pipe 5 relative to the suction pipe 1 at any angle. In this case, the crossing angle between the suction pipe 1 and the return air pipe 2 is in horizontal projection, mainly 90-180 °.

The proposed utility model works as follows.

Return air through the return air pipe 2 enters the cyclone 4, in which it is twisted, evenly distributed and, under the action of centrifugal forces, is ejected into the gap between the lower part of the cyclone 4 and the separation disk 3. The resulting centrifugal return air stream aerates and agitates the conical walls of the pellet funnel 6. Then the return air together with the picked up pellets enters the suction pipe 1.

The presence of a cyclone in the device provides uniform distribution, the directed use of energy of return air for aeration and tedding of the walls of the pellet funnel and a more uniform capture of fuel pellets from all sides. As a result, the productivity of the suction device and the efficiency of using the warehouse area are increased, in comparison with the prototype.

Claims (2)

     1. A pneumatic conveying device comprising a suction pipe, a return air pipe located above the suction pipe, and a separation disk installed between the intake pipe and the return air pipe, characterized in that the device further comprises a cyclone open from below and located above one on the separation disk axis with it, connected to the return air pipe.      2. The receiving device according to claim 1, characterized in that the separation disk and the return air cyclone are mounted on a vertical pipe.

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