Combined rotary valve

Abstract

The utility model relates to the technical field of rotary valves, in particular to a combined rotary valve which comprises a feeding pipe, an air bag is arranged on the outer wall of the feeding pipe, the inner wall of the top of the air bag is fixed to the outer wall of the top of the feeding pipe, the feeding pipe is surrounded by the air bag, a circulation containing cavity is formed between the inner wall of the air bag and the outer wall of the feeding pipe, and the bottom of the circulation containing cavity is through. An air inlet pipe is inserted into the top face of the air bag, a shell is installed at the bottom of the air bag, an inner containing cavity of the shell is communicated with a circulation containing cavity, a rotor is rotationally connected to the inner wall of the shell, and the situation that a discharging opening is blocked in the discharging process of materials through the rotary valve can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of rotary valves, and in particular to a combined rotary valve. Background Art

[0002] The combined rotary valve is a special equipment used in powder (powder, granular material, powder-particle mixture) conveying system for unloading, metering, dust removal, quantitative conveying, mixing and packaging. The rotary valve includes a shell and a rotor. The rotor is connected to the inside of the shell. A motor that drives the rotor is installed on the outer wall of the shell. When conveying materials, the rotor of the rotary valve rotates in the cylindrical shell. The material falls from the upper hopper into the space of the impeller by its own weight, and then rotates with the rotor to the discharge port of the rotary valve. The discharge port of the rotary valve is connected to the acceleration chamber. The falling material is mixed with the airflow in the acceleration chamber and is sent to the conveying pipeline under the action of pressure and a certain flow rate for material transmission.

[0003] When the material is discharged through the rotary valve, fine powder is more likely to stick to the material. The sticky fine powder accumulates on the side sealing surface, causing the discharge port to be blocked, affecting production efficiency. Summary of the Invention

[0004] In order to reduce the clogging of the discharge port during the discharge of materials through the rotary valve, the present application provides a combined rotary valve.

[0005] The combined rotary valve provided in this application adopts the following technical solution:

[0006] A combined rotary valve includes a feed pipe, an air bag is provided on the outer wall of the feed pipe, the inner wall of the top of the air bag is fixed to the outer wall of the top of the feed pipe, the air bag surrounds the feed pipe, a flow cavity is formed between the inner wall of the air bag and the outer wall of the feed pipe, the bottom of the flow cavity is through-connected, an air inlet pipe is inserted into the top surface of the air bag, an outer shell is installed at the bottom of the air bag, the internal cavity of the outer shell is connected to the flow cavity, and the inner wall of the outer shell is rotatably connected to a rotor.

[0007] By adopting the above technical solution, the material enters from the top of the feed pipe, and then enters the internal cavity of the shell. The material falls to the top of the rotor, and the rotor rotates to rotate the material on the top of the rotor to the bottom, thereby discharging the material. The amount and speed of material discharging are controlled by the speed of rotor rotation. The gas is transported into the flow cavity through the air inlet pipe, and the gas is blown to the material at the bottom of the feed pipe through the bottom of the flow cavity, thereby promoting the evaporation of moisture in the material, making the material drier and reducing the stickiness of the material, thereby reducing the accumulation of material on the inner wall of the shell or the outer wall of the rotor. At the same time, the gas blown out from the bottom of the flow cavity can clean the material sticking to the inner wall of the shell and the outer wall of the rotor, thereby reducing the blockage of the discharge port.

[0008] Preferably, the cross-section of the air bag is triangular, and the width of the top of the flow cavity is greater than the width of the bottom of the flow cavity.

[0009] By adopting the above technical solution, the top width of the circulation cavity is greater than the bottom width of the circulation cavity, so that the gas in the circulation cavity can be more concentratedly aligned with the bottom of the feed pipe, thereby better drying the material and better cleaning the material sticking to the inner wall of the shell and the outer wall of the rotor.

[0010] Preferably, a connecting pipe is inserted into the outer wall of the air bag, and the other end of the connecting pipe is inserted into the outer wall of the shell, and the flow cavity, the connecting pipe cavity and the shell cavity are connected.

[0011] By adopting the above technical solution, the gas blown out from the bottom of the circulation cavity can clean the material sticking to the top of the inner wall of the shell. Under the action of the circulation tube, the gas blown out from the circulation tube cavity can clean the material at the bottom of the inner wall of the shell and further dry the material. At the same time, it can also further reduce the situation of material sticking to the outer wall of the rotor.

[0012] Preferably, the opening of the communicating pipe is aligned with the bottom of the shell.

[0013] By adopting the above technical solution, the opening of the communicating tube is aligned with the bottom of the shell, so that the gas in the cavity of the communicating tube can better clean the materials at the bottom of the inner wall of the shell.

[0014] Preferably, the air bag is detachably fixedly connected to the shell.

[0015] By adopting the above technical solution, the air bag and the shell are detachably fixedly connected, thereby improving the convenience of disassembly and assembly between the air bag and the shell, making it convenient for operators to disassemble the air bag and the shell to repair or clean the rotary valve.

[0016] Preferably, a connecting seat is fixed to the top outer wall of the shell, and a mounting seat is fixed to the bottom outer wall of the air bag. The bottom surface of the mounting seat abuts against the top surface of the connecting seat. A connecting piece is provided on the top surface of the connecting seat, and the connecting seat and the mounting seat are fixed via the connecting piece.

[0017] By adopting the above technical solution, the bottom surface of the mounting seat abuts against the top surface of the connecting seat. Under the action of the connecting seat and the mounting seat, the connection area between the air bag and the outer shell can be increased, and the connection stability between the air bag and the outer shell can be further improved. The air bag and the outer shell are fixed by a connecting piece, thereby improving the convenience of disassembly and assembly between the outer shell and the air bag.

[0018] Preferably, a material delivery pipe is provided at the bottom of the shell, and the shell cavity is connected to the material delivery pipe cavity.

[0019] By adopting the above technical solution, under the action of the material conveying pipe, the material at the bottom of the material rotor falls into the material conveying pipe cavity, and the material can be conveyed along the material conveying pipe cavity.

[0020] Preferably, an acceleration chamber is fixed to the bottom of the shell, the shell cavity is communicated with the acceleration chamber cavity, the bottom of the acceleration chamber is inserted into the top of the feed pipe, and the acceleration chamber cavity is communicated with the feed pipe cavity.

[0021] By adopting the above technical solution, under the action of the acceleration chamber, the flow of materials in the conveying pipeline can be guided and accelerated, reducing the blockage and resistance of the materials during the conveying process, thereby improving the conveying efficiency.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The material enters from the top of the feed pipe, and then enters the internal cavity of the shell. The material falls to the top of the rotor. The rotor rotates, and the material on the top of the rotor is rotated to the bottom, thereby discharging the material. The amount and speed of material discharging are controlled by the speed of rotor rotation. The gas is transported into the flow cavity through the air inlet pipe. The gas is blown to the material at the bottom of the feed pipe through the bottom of the flow cavity, thereby promoting the evaporation of moisture in the material, making the material drier and reducing the stickiness of the material, thereby reducing the accumulation of material on the inner wall of the shell or the outer wall of the rotor. At the same time, the gas blown out from the bottom of the flow cavity can clean the material sticking to the inner wall of the shell and the outer wall of the rotor, thereby reducing the blockage of the discharge port.

[0024] 2. The gas blown out from the bottom of the circulation cavity can clean the material sticking to the top of the inner wall of the shell. Under the action of the circulation tube, the gas blown out from the circulation tube cavity can clean the material at the bottom of the inner wall of the shell and further dry the material. At the same time, it can also further reduce the situation of material sticking to the outer wall of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0026] Figure 2 It is a cross-sectional view of an embodiment of the present application.

[0027] Explanation of the accompanying symbols: 1. Feed pipe; 2. Air bag; 21. Circulation chamber; 22. Mounting seat; 23. Inlet pipe; 3. Housing; 31. Connecting seat; 4. Bolt; 5. Rotor; 6. Acceleration chamber; 7. Feed pipe; 8. Connecting pipe. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-2 This application is described in further detail.

[0029] The embodiments of the present application disclose a combined rotary valve.

[0030] Reference Figure 1 and Figure 2 The combined rotary valve includes a feed pipe 1, which is a circular tube. An air bag 2 is provided on the outer wall of the feed pipe 1. The inner wall of the top of the air bag 2 is welded to the outer wall of the top of the feed pipe 1. The cross-section of the air bag 2 is triangular. A flow cavity 21 is formed between the inner wall of the air bag 2 and the outer wall of the feed pipe 1. The bottom of the flow cavity 21 is through, and the width of the top of the flow cavity 21 is greater than the width of the bottom of the flow cavity 21, so that the air bag 2 surrounds the feed pipe 1.

[0031] The top of the cam 31 is provided with a screw thread, and the top of the cam 31 is provided with a screw thread, so that the cam 31 is fixed to the cam 32, so that the cam 31 is fixed to the cam 32.

[0032] The internal cavity of the shell 3 is connected to the circulation cavity 21, and the inner wall of the shell 3 is rotatably connected to the rotor 5. The outer wall of the shell 3 is installed with a motor, and the rotor 5 extends out of the shell 3 near one end of the motor. The output end of the motor is matched with the part of the rotor 5 extending out of the shell 3. When the motor is started, the motor can drive the rotor 5 to rotate. An acceleration chamber 6 is fixed to the bottom of the shell 3. The connection method between the top of the acceleration chamber 6 and the bottom of the shell 3 is consistent with the connection method between the top of the shell 3 and the bottom of the air bag 2. In the embodiment of the present application, it is not described in detail. There is an acceleration cavity inside the acceleration chamber 6. The acceleration cavity is a cavity that passes through from top to bottom. The acceleration cavity is connected to the internal cavity of the shell 3. One end of the acceleration chamber 6 gradually extends outward from top to bottom, so that the bottom width of the acceleration cavity is greater than the top width. A feed pipe 7 is welded to the bottom of the acceleration chamber 6, and the acceleration cavity is connected to the cavity of the feed pipe 7.

[0033] Reference Figure 2The material enters from the top of the feed pipe 1, then enters the internal cavity of the shell 3, and falls to the top of the rotor 5. The rotor 5 rotates, rotating the material on the top of the rotor 5 to the bottom. The amount and speed of material discharge are controlled by the speed of rotation of the rotor 5. The material at the bottom of the rotor 5 falls into the acceleration cavity and enters the cavity of the conveying pipe 7, and is finally transported through the conveying pipe 7.

[0034] An air inlet pipe 23 is inserted into the top surface of the air bag 2, and gas is transported into the flow cavity 21 through the air inlet pipe 23. The gas is blown toward the material at the bottom of the feed pipe 1 through the bottom of the flow cavity 21, thereby promoting the evaporation of moisture in the material, making the material drier and reducing the stickiness of the material, thereby reducing the accumulation of material on the inner wall of the shell 3 or the outer wall of the rotor 5. At the same time, the gas blown out from the bottom of the flow cavity 21 can clean the material sticking to the inner wall of the shell 3 and the outer wall of the rotor 5, thereby reducing the blockage of the discharge port.

[0035] A connecting tube 8 is inserted into the outer wall of the air bag 2, and the other end of the connecting tube 8 is inserted into the outer wall of the shell 3. The opening of the connecting tube 8 is aligned with the bottom of the shell 3. The flow cavity 21, the connecting tube 8 cavity and the shell 3 cavity are connected, so that the gas in the flow cavity 21 enters the shell 3 cavity along the connecting tube 8 cavity, and the rotor 5 rotates downward along one end of the connecting tube 8, so that the material is transported downward along the shell 3 cavity near the end of the connecting tube 8. Therefore, the inner wall of the shell 3 is more likely to be sticky with the material near the end of the flow tube. The gas blown out from the bottom of the flow cavity 21 can clean the material stuck on the top of the inner wall of the shell 3. Under the action of the flow tube, the gas blown out from the flow tube cavity can clean the material at the bottom of the inner wall of the shell 3, and can further dry the material. At the same time, it can also further reduce the situation of the material sticking to the outer wall of the rotor 5.

[0036] The above are all preferred embodiments of the present application. These embodiments are only explanations of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be covered within the scope of protection of the present application.

Claims

1. Combined rotary valve, characterized in that: The invention comprises a feed pipe (1), an air bag (2) is provided on the outer wall of the feed pipe (1), the top inner wall of the air bag (2) is fixed to the top outer wall of the feed pipe (1), the air bag (2) surrounds the feed pipe (1), a flow cavity (21) is formed between the inner wall of the air bag (2) and the outer wall of the feed pipe (1), the bottom of the flow cavity (21) is connected, an air inlet pipe (23) is inserted into the top surface of the air bag (2), a shell (3) is installed at the bottom of the air bag (2), the internal cavity of the shell (3) is connected to the flow cavity (21), and the inner wall of the shell (3) is rotatably connected to a rotor (5).

2. The combined rotary valve according to claim 1, characterized in that: The cross section of the air bag (2) is triangular, and the width of the top of the circulation cavity (21) is greater than the width of the bottom of the circulation cavity (21).

3. The combined rotary valve according to claim 1, characterized in that: A connecting tube (8) is inserted into the outer wall of the air bag (2), and the other end of the connecting tube (8) is inserted into the outer wall of the shell (3). The flow cavity (21), the cavity of the connecting tube (8) and the cavity of the shell (3) are interconnected.

4. The combined rotary valve according to claim 3, characterized in that: The opening of the communicating pipe (8) is aligned with the bottom of the housing (3).

5. The combined rotary valve according to claim 1, characterized in that: The air bag (2) and the outer shell (3) are detachably fixedly connected.

6. The combined rotary valve according to claim 1, characterized in that: A connecting seat (31) is fixed to the top outer wall of the shell (3), and a mounting seat (22) is fixed to the bottom outer wall of the air bag (2). The bottom surface of the mounting seat (22) abuts against the top surface of the connecting seat (31). A connecting piece is provided on the top surface of the connecting seat (31), and the connecting seat (31) and the mounting seat (22) are fixed via the connecting piece.

7. The combined rotary valve according to claim 1, characterized in that: A material delivery pipe (7) is provided at the bottom of the shell (3), and the housing cavity of the shell (3) is connected to the housing cavity of the material delivery pipe (7).

8. The combined rotary valve according to claim 7, characterized in that: An acceleration chamber (6) is fixed to the bottom of the shell (3), the housing cavity of the shell (3) is connected to the housing cavity of the acceleration chamber (6), the bottom of the acceleration chamber (6) is inserted into the top of the material delivery pipe (7), and the housing cavity of the acceleration chamber (6) is connected to the housing cavity of the material delivery pipe (7).

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