A pneumatic conveying system air supply valve

Abstract

The utility model discloses a kind of air conveying system air supplementing valve, including air supplementing valve body, the top end and bottom end of air supplementing valve body are threadedly connected with connecting pipe, the top end and bottom end of air supplementing valve body are equipped with connecting assembly, the connecting assembly includes connecting ring, two connecting rings are respectively welded in the top and bottom of air supplementing valve body, the two sides of connecting ring are equipped with side notch, and the inner wall between the two sides of side notch is rotatably connected with rotating screw through rotating shaft, and the other end of rotating screw is threadedly connected with lock nut, the circumferential outer wall of connecting pipe is fixedly connected with fixed ring, and the circumference of fixed ring is equipped with multiple connecting notches, and one end of rotating screw is connected with connecting notch.The utility model is fixed by pulling rotating screw and making its one end and connecting notch clamping, then tightening lock nut, to be stably connected between connecting pipe and air supplementing valve body, to prevent the loosening of air supplementing valve and connected pipeline.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic conveying technology, and in particular to a pneumatic conveying system air replenishment valve. Background Technology

[0002] Currently, in pneumatic conveying systems, an air replenishment valve is installed on the conveying pipeline for replenishing air. One end of the air replenishment valve is connected to the air compressor or Roots blower through a pipeline to meet the needs of the pneumatic conveying system for compressed air generated by the air compressor or Roots blower.

[0003] In the use of existing air replenishment valves, the threaded connection of the air replenishment valve is not secure enough, which makes the air replenishment valve and the connected pipeline prone to loosening. Therefore, in order to better ensure the connection between the air replenishment valve and the pipeline, promote the technological progress of the industry, and improve the core technology competitiveness, this application proposes a new implementation scheme that is different from the connection structure of the air replenishment valve in the prior art. Utility Model Content

[0004] The purpose of this invention is to solve the problem of poor connection and performance of existing threaded air supply valves, and to propose an air supply valve for a pneumatic conveying system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pneumatic conveying system air replenishment valve includes an air replenishment valve body. A connecting pipe is threaded to both the top and bottom of the air replenishment valve body. A connecting assembly is provided at both the top and bottom of the air replenishment valve body. Each connecting assembly includes a connecting ring. Two connecting rings are welded to the top and bottom of the air replenishment valve body, respectively. Side grooves are provided on both sides of the connecting rings. A rotating screw is rotatably connected between the inner walls of the two sides of the side grooves via a rotating shaft. A locking nut is threaded to the other end of the rotating screw. A fixing ring is fixedly connected to the outer circumference of the connecting pipe. The fixing ring has multiple connecting grooves on its circumference. One end of the rotating screw engages with one of the connecting grooves.

[0007] Furthermore, a connecting cylinder is fixedly connected to the outer circumference of the connecting pipe, and a limit cover is threadedly connected to the outer circumference of the connecting cylinder.

[0008] Furthermore, a pressure ring is fixedly connected to the outer circumference of the connecting pipe, and a sealing gasket is adhered to one side of the pressure ring.

[0009] Furthermore, the fixing ring is located between the pressure ring and the connecting cylinder.

[0010] Furthermore, the limiting cover is placed over one end of the rotating screw, and the inner circumferential wall of the limiting cover is provided with anti-slip grooves.

[0011] Furthermore, the plurality of connecting slots are evenly distributed in an array along the circumference of the fixing ring.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By turning the screw to engage one end with the connecting slot, and then tightening the lock nut to fix it, a stable connection is made between the connecting pipe and the air supply valve body, thereby preventing the air supply valve from loosening with the connected pipe.

[0014] 2. Tighten the limiting cover so that it presses against the locking nut, and at the same time, make the limiting cover press against the top of the rotating screw, thereby preventing the locking nut from loosening and thus preventing the rotating screw from falling off. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an air replenishment valve for a pneumatic conveying system proposed in this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of the air supply valve body of an air supply valve for a pneumatic conveying system proposed in this utility model.

[0017] Figure 3 This is a cross-sectional view of the connecting pipe of the air supply valve in a pneumatic conveying system proposed in this utility model.

[0018] Figure 4 This is a cross-sectional structural schematic diagram of an air replenishment valve for a pneumatic conveying system proposed in this utility model.

[0019] In the diagram: 1. Air supply valve body; 2. Connecting pipe; 3. Connecting assembly; 301. Connecting ring; 302. Side groove; 303. Rotating screw; 304. Locking nut; 305. Fixing ring; 306. Connecting groove; 307. Connecting cylinder; 308. Limiting cover; 4. Pressure ring; 5. Sealing gasket. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4 A pneumatic conveying system air replenishment valve includes an air replenishment valve body 1, wherein the air replenishment valve body 1 is provided with a one-way valve structure for opening and closing when the pneumatic conveying system is not replenished with air and when it is replenished with air. The air replenishment valve with model number DXF can be referenced. The air replenishment valve body 1 is the main part of the entire system and is responsible for the air supply during the pneumatic conveying process.

[0022] The top and bottom ends of the air supply valve body 1 are threaded with connecting pipes 2. The connecting pipes 2 are used to connect the air supply valve body 1 with other system components to transmit airflow.

[0023] The top and bottom of the air supply valve body 1 are provided with connecting components 3. The connecting components 3 include connecting rings 301. Two connecting rings 301 are welded to the top and bottom of the air supply valve body 1, respectively. Both sides of the connecting rings 301 are provided with side grooves 302. The inner walls of the two sides of the side grooves 302 are rotatably connected to a rotating screw 303 through a rotating shaft. The other end of the rotating screw 303 is threaded with a locking nut 304. The outer circumference of the connecting pipe 2 is welded with a fixing ring 305. The surface of the fixing ring 305 is provided with a rough frosted surface. Multiple connecting grooves 306 are opened on the circumference of the fixing ring 305. One end of the rotating screw 303 is engaged with the connecting groove 306. The rotating screw 303 is turned so that one end is engaged with the connecting groove 306. Then the locking nut 304 is tightened to fix it. The locking nut 304 is pressed against the end faces on both sides of the connecting groove 306, thereby stably connecting the connecting pipe 2 and the air supply valve body 1.

[0024] A connecting sleeve 307 is welded to the outer circumference of the connecting pipe 2. A limit cover 308 is threadedly connected to the outer circumference of the connecting sleeve 307. Tightening the limit cover 308 makes it abut against the locking nut 304, and at the same time, the limit cover 308 abuts against the top of the rotating screw 303, thereby preventing the locking nut 304 from loosening and thus preventing the rotating screw 303 from falling off.

[0025] A pressure ring 4 is welded to the outer circumference of the connecting pipe 2. The pressure ring 4 presses against the top and bottom of the air supply valve body 1, thereby making the connecting pipe 2 and the air supply valve body 1 firmly connected. A sealing gasket 5 is bonded to one side of the pressure ring 4. The sealing gasket 5 is made of nitrile rubber with a thickness of 3-5mm. The sealing gasket 5 seals the connection between the connecting pipe 2 and the air supply valve body 1.

[0026] The fixing ring 305 is located between the pressure ring 4 and the connecting cylinder 307. The limiting cover 308 covers one end of the rotating screw 303. The inner circumference of the limiting cover 308 is provided with anti-slip grooves, which increases the friction between one end of the rotating screw 303 and the inner wall of the limiting cover 308, and further prevents the rotating screw 303 from falling off.

[0027] Multiple connecting slots 306 are evenly distributed in an array along the circumference of the fixing ring 305.

[0028] The working principle of this embodiment is as follows: When in use, first connect the connecting pipe 2 to the top and bottom of the air supply valve body 1. One end of the upper connecting pipe 2 is connected to the Roots blower or air compressor, while the other end of the lower connecting pipe 2 is connected to the pneumatic conveying pipeline.

[0029] When the air replenishment valve is in use, compressed air generated by the Roots blower or air compressor enters the air replenishment valve body 1 through the upper connecting pipe 2. Since the pressure of the compressed air is greater than the opening pressure of the one-way valve, the one-way valve structure inside the air replenishment valve body 1 is opened by pressure, allowing the compressed air to enter the pneumatic conveying pipeline through the lower connecting pipe 2 to replenish the pneumatic conveying system. After the air replenishment stops, the one-way valve closes, thus completing the use of the air replenishment valve in the pneumatic conveying system.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pneumatic conveying system air supply valve, comprising an air supply valve body (1), characterized in that, The top and bottom ends of the air supply valve body (1) are threaded with connecting pipes (2). The top and bottom ends of the air supply valve body (1) are provided with connecting components (3). The connecting components (3) include connecting rings (301). Two connecting rings (301) are welded to the top and bottom of the air supply valve body (1) respectively. The two sides of the connecting rings (301) are provided with side slots (302). The inner walls of the two sides of the side slots (302) are rotatably connected to a rotating screw (303) through a rotating shaft. The other end of the rotating screw (303) is threaded with a locking nut (304). The outer circumference of the connecting pipe (2) is fixedly connected with a fixing ring (305). The circumference of the fixing ring (305) is provided with multiple connecting slots (306). One end of the rotating screw (303) is engaged with the connecting slot (306).

2. The air replenishment valve for a pneumatic conveying system according to claim 1, characterized in that, The connecting tube (2) is fixedly connected to the outer circumference of the connecting tube (2), and the outer circumference of the connecting tube (307) is threadedly connected to the limit cover (308).

3. The air supply valve for a pneumatic conveying system according to claim 1, characterized in that, A pressure ring (4) is fixedly connected to the outer circumference of the connecting pipe (2), and a sealing gasket (5) is bonded to one side of the pressure ring (4).

4. The air replenishment valve for a pneumatic conveying system according to claim 1, characterized in that, The fixing ring (305) is located between the pressure ring (4) and the connecting cylinder (307).

5. The air replenishment valve for a pneumatic conveying system according to claim 2, characterized in that, The limiting cover (308) covers one end of the rotating screw (303), and the inner circumferential wall of the limiting cover (308) is provided with anti-slip grooves.

6. The air replenishment valve for a pneumatic conveying system according to claim 1, characterized in that, The multiple connecting slots (306) are evenly distributed in an array along the circumference of the fixing ring (305).

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