Device for improving sealing performance of pneumatic conveying bin pump

Abstract

The utility model relates to a device for improving the sealing performance of a pneumatic conveying bin pump, which belongs to the technical field of bin pump sealing operation and is arranged at a feed port of the bin pump, a sealing seat is of a hollow structure with two open ends, one end of the sealing seat is communicated with the feed port, the other end of the sealing seat is communicated with the bin pump, and a plurality of gas nozzles are evenly distributed on the periphery of the upper portion of the sealing seat. A sealing plate and a reset spring are arranged in the sealing seat, one side of the sealing plate is rotationally arranged in the sealing seat, one end of the reset spring is fixedly connected with the lower end of the sealing plate, the other end of the reset spring is fixedly connected with the inner wall of the sealing seat, and the reset spring, the sealing plate and the inner wall of the sealing seat define a triangular structure. The sealing plate is matched with the inner wall of the sealing seat; under the pressure of the bin pump, the sealing plate is upwards propped to be closed with the sealing seat to realize sealing; the device is simple in structure and convenient to use, the sealing performance of the bin pump is improved, and stable operation of a system is kept.

Description

Technical Field

[0001] The utility model relates to a device for increasing the sealing performance, in particular to a device for increasing the sealing performance of a pneumatic conveying silo pump, and belongs to the technical field of silo pump sealing operation. Background Art

[0002] Pneumatic conveying pumps use positive pressure pneumatic conveying to convey powdered materials. They are widely used in the transportation of fly ash, dust ash, cement raw materials, mineral powder and other materials. The conveying pipeline can be arranged according to actual conditions to achieve centralized, decentralized, high-altitude and long-distance transportation. It is an indispensable and important equipment for each production plant. The supporting equipment of the gas conveying pump includes a silo pump, a conveying gas source and a sealing valve. During the use of the pneumatic conveying pump, the sealing valve ensures that the powdered material does not leak out when the pump is running, so as to achieve the purpose of stable operation. During the operation of the pneumatic conveying pump, the sealing valve is often attached to the powdered material, and the reduced sealing effect leads to a decrease in the conveying efficiency, affecting the production operation. Therefore, in order to solve this problem, the development of a device that can overcome the above-mentioned defects and increase the sealing performance has become an urgent problem to be solved by technicians in this field. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a device for increasing the sealing performance of a pneumatic conveying silo pump. The device has a simple structure and is easy to use, and can increase the sealing performance of the silo pump and maintain stable operation of the system.

[0004] In order to solve the above technical problems, the utility model provides a device for increasing the sealing performance of a pneumatic conveying silo pump, which is arranged at the feed port of the silo pump. The sealing seat is a hollow structure with openings at both ends. One end of the sealing seat is connected to the feed port, and the other end is connected to the silo pump. Several gas nozzles are evenly distributed on the outer periphery of the upper part of the sealing seat, and the gas nozzles are connected to the outside air through an air pipe. A sealing plate and a reset spring are provided in the sealing seat. One side of the sealing plate is rotatably arranged in the sealing seat, one end of the reset spring is connected and fixed to the lower end of the sealing plate, and the other end is connected and fixed to the inner wall of the sealing seat. The reset spring, the sealing plate and the inner wall of the sealing seat form a triangular structure, and the sealing plate is matched with the inner wall of the sealing seat. Under the pressure of the silo pump, the sealing plate is pressed upward and closed with the sealing seat to achieve sealing.

[0005] The technical solution further defined in the utility model is:

[0006] Furthermore, in the aforementioned device for increasing the sealing performance of the pneumatic conveying silo pump, when the silo pump is feeding, the sealing plate is tilted, and the angle formed by the sealing plate and the inner wall of the sealing seat in a clockwise direction is 55°.

[0007] Technical effect: When the sealing plate is not working, the clockwise angle formed by the sealing plate and the inner wall of the sealing seat is 55°, which does not hinder feeding. At the same time, after the feeding is completed, the pressure of the silo pump can push the sealing plate tightly to seal the sealing seat. The angle of 55° does not hinder feeding, and can quickly and smoothly push the sealing plate up under pressure capacity. Too large an angle is not conducive to feeding, and too small an angle will result in insufficient pressure from the silo pump and cannot effectively reduce the tight seal.

[0008] In the aforementioned device for increasing the sealing performance of the pneumatic conveying silo pump, the sealing plate is located below the gas nozzle, and the sealing plate is made of 304 stainless steel.

[0009] In the aforementioned device for increasing the sealing performance of the pneumatic conveying silo pump, a control valve is provided on the air pipe.

[0010] Technical effect: the control valve is arranged to facilitate the injection of gas into the sealing seat as needed, so as to prevent the sealing seat from being stuck with dust and causing poor sealing.

[0011] In the aforementioned device for increasing the sealing performance of a pneumatic conveying silo pump, the gas nozzle is arranged at the connection between the sealing seat and the feed port.

[0012] Technical effect: It is easy to get stuck at the connection, so a gas nozzle is set at the connection to regularly spray to remove dust and prevent dust from getting stuck, ensuring the stability of the work.

[0013] In the aforementioned device for increasing the sealing performance of the pneumatic conveying silo pump, the feed inlet is a bucket-shaped structure.

[0014] Technical effect: the bucket-shaped structure facilitates smoother feeding.

[0015] In the aforementioned device for increasing the sealing performance of the pneumatic conveying silo pump, an annular rubber pad is provided in the sealing seat, and the sealing plate presses upward and against the annular rubber pad when the sealing seat is closed.

[0016] Technical effect: the utility model provides an annular rubber pad in the sealing seat so that the sealing plate and the sealing seat are pressed against the annular rubber pad when they are closed, thereby further enhancing the sealing performance.

[0017] The beneficial effects of the utility model are:

[0018] The utility model adopts a return spring under the sealing plate to play a supporting role and keep the sealing plate and the sealing seat at an angle of 55 degrees. The powdered material can enter the silo pump from top to bottom through the sealing surface angle. When the silo pump normally completes the material and closes the sealing valve, the internal stamping of the silo pump lifts the sealing plate and closes the sealing seat to achieve a sealing effect. When the internal pressure of the silo pump is reduced, the sealing plate falls down under the action of the return spring and the sealing seat channel is opened to carry out the next round of conveying operation. It is easy to use.

[0019] The utility model provides a gas nozzle on the sealing seat, and the nozzle is controlled by a control valve to perform gas cleaning for sealing to prevent dust from being stuck and affecting the sealing performance.

[0020] During the use of general silo pumps, the sealing surface will be corroded after the sealing valve and materials are in contact for a long time. Manual disassembly and inspection are required regularly, which is cumbersome. Once the sealing valve of the silo pump is not sealed tightly, the material will recoil from the sealing valve when pressurized, causing dust. The material conveying capacity of the silo pump is reduced due to insufficient pressure inside the silo pump. In severe cases, the outlet pipeline is blocked and the entire conveying system is shut down.

[0021] The silo pump sealing device of the utility model can increase the sealing performance during pneumatic conveying and is arranged below the sealing valve to further improve the sealing performance, reduce system leakage, maintain stable operation of the system, and thus reduce maintenance costs. The utility model is arranged outside the silo pump, which is convenient for installation, disassembly, maintenance and replacement, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a device for increasing the sealing performance of a pneumatic conveying silo pump according to an embodiment of the utility model;

[0023] In the figure: 1-silo pump, 2-feed port, 3-sealing seat, 4-gas nozzle, 5-air pipe, 6-sealing plate, 7-reset spring, 8-control valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them; the technical features involved in the various implementation methods of the utility model described below can be combined with each other as long as they do not conflict with each other. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0025] This embodiment provides a device for increasing the sealing performance of a pneumatic conveying silo pump, the structure of which is as follows: Figure 1 As shown, it is arranged at the feed inlet of the silo pump and includes a sealing seat;

[0026] The two ends of the lower part of the silo pump 1 are respectively connected with pipelines for conveying the inlet and outlet of the gas source. The upper end of the silo pump 1 is provided with a bucket-shaped feed port 2 and a sealing seat 3. The sealing seat 3 is arranged between the feed port 2 and the silo pump 1:

[0027] A sealing valve is provided in the feed port 2;

[0028] The sealing seat 3 is a hollow structure with two ends open. One end of the sealing seat 3 is connected to the feed port 2, and the sealing valve seals the feed port. The other end is connected to the warehouse pump 1. Several gas nozzles 4 are evenly distributed on the upper periphery of the sealing seat 3 at the connection between the sealing seat 3 and the feed port 2. The gas nozzle 4 is connected to the outside air through the air pipe 5. The air pipe 5 is provided with a control valve 8, which is convenient for timely cleaning according to the situation. A sealing plate 6 and a reset spring 7 are provided in the sealing seat 3. The sealing plate 6 is located below the gas nozzle 4. The sealing plate 6 is made of 304 stainless steel. 304 stainless steel is light and strong, which is convenient for the reset spring to support and fix. At 55°, one side of the sealing plate 6 is rotatably arranged in the sealing seat 3 through a pin shaft and a rocker arm, one end of the reset spring 7 is connected and fixed to the lower end of the sealing plate 6, and the other end is connected and fixed to the inner wall of the sealing seat 3. The reset spring 7, the sealing plate 6 and the inner wall of the sealing seat 3 form a triangular structure, the sealing plate 6 is adapted to the inner wall of the sealing seat 3, and an annular rubber pad is arranged in the sealing seat 3. Under the pressure of the silo pump 1, the sealing plate 6 is pressed upward to close the sealing seat 3 and abuts against the annular rubber pad to achieve sealing; when the silo pump 1 is feeding, the sealing plate 6 is tilted, and the angle formed by the sealing plate 6 and the inner wall of the sealing seat 3 clockwise is 55°.

[0029] When it comes to specific implementation,

[0030] 1. Turn off the power supply of the pneumatic conveying pump and the imported manual valve;

[0031] 2. Disassemble the connecting pipe below the sealing valve and install the sealing seat;

[0032] 3. Assemble the sealing plate 6 and the return spring 7 below the sealing seat 3 and adjust the angle opening to 55°;

[0033] 4. Install a cleaning gas nozzle 4 on the side of the sealing seat 3, and connect the gas to the control valve 8 through a pipeline;

[0034] 5. Debug the control system device in the conveying system. During feeding, the powdered material can enter the silo pump 1 from top to bottom through the angle of the inclined sealing plate 6. When the silo pump 1 closes the sealing valve normally after the material is delivered, the internal pressure of the silo pump 1 lifts the sealing plate 6 and closes the sealing seat 3 to achieve a sealing effect. When the internal pressure of the silo pump 1 is reduced, the sealing plate 6 falls and the channel of the sealing seat 3 is opened to carry out the next round of conveying operation.

[0035] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A device for increasing the sealing performance of a pneumatic conveying silo pump, arranged at the feed inlet of the silo pump, characterized in that: The invention comprises a sealing seat, wherein the sealing seat (3) is a hollow structure with two ends opened, one end of the sealing seat (3) is connected to the feed port (2), and the other end is connected to the silo pump (1), a plurality of gas nozzles (4) are evenly distributed on the outer periphery of the upper part of the sealing seat (3), and the gas nozzles (4) are connected to the outside air through an air pipe (5), a sealing plate (6) and a return spring (7) are arranged in the sealing seat (3), one side of the sealing plate (6) is rotatably arranged in the sealing seat (3), one end of the return spring (7) is connected and fixed to the lower end of the sealing plate (6), and the other end is connected and fixed to the inner wall of the sealing seat (3), the return spring (7), the sealing plate (6) and the inner wall of the sealing seat (3) form a triangular structure, the sealing plate (6) is adapted to the inner wall of the sealing seat (3), and under the pressure of the silo pump (1), the sealing plate (6) is pressed upward to close with the sealing seat (3) to achieve sealing.

2. The device for increasing the sealing performance of a pneumatic conveying silo pump according to claim 1, characterized in that: When the silo pump (1) is feeding, the sealing plate (6) is arranged tilted, and the angle formed by the sealing plate (6) and the inner wall of the sealing seat (3) in a clockwise direction is 55°.

3. The device for increasing the sealing performance of a pneumatic conveying silo pump according to claim 1, characterized in that: The sealing plate (6) is located below the gas nozzle (4), and the sealing plate (6) is made of 304 stainless steel.

4. The device for increasing the sealing performance of a pneumatic conveying silo pump according to claim 1, characterized in that: The air pipe (5) is provided with a control valve (8).

5. The device for increasing the sealing performance of a pneumatic conveying silo pump according to claim 1, characterized in that: The gas nozzle (4) is arranged at the connection between the sealing seat (3) and the feed port (2).

6. The device for increasing the sealing performance of a pneumatic conveying silo pump according to claim 1, characterized in that: The feed inlet (2) is a bucket-shaped structure.

7. The device for increasing the sealing performance of a pneumatic conveying silo pump according to claim 1, characterized in that: An annular rubber pad is provided in the sealing seat (3), and when the sealing plate (6) is pressed upwards and the sealing seat (3) is closed, the sealing plate (6) abuts against the annular rubber pad.

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