Air-assisted rotary valve

Abstract

The utility model provides a kind of air-laid rotary valve, including valve body and horizontally arranged conveying pipe, the upper end of valve body is provided with feed inlet, lower end is equipped with discharge port, discharge port is directly connected with the entry of conveying pipe lateral wall;Conveying pipe is parallel with the axial direction of valve body.The utility model has the beneficial effects that:1, by conveying pipe and valve body axial parallel arrangement, so that the channel formed between adjacent rotating blades and the flow passage in conveying pipe are same direction setting, this design effectively avoids the disorder vortex of airflow in valve body in traditional venturi structure, prevent ultra-light material (bulk density <0.3kg / m 3 ) In the vicinity of feed inlet suspension, fundamentally solve the material retention problem caused by plenum effect.2, directly connected flow passage structure makes material under the action of gravity natural fall to conveying pipe, reduces airflow interference.3, axial parallel layout simplifies airflow path, reduces the gas pressure fluctuation of conveying system, thereby reduce system energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of rotary valve technology, specifically a pneumatic rotary valve. Background Technology

[0002] In pneumatic conveying systems, the pneumatic rotary valve (also known as a rotary feeder or rotary airlock valve) is a key piece of equipment used to continuously and stably convey powder or granular materials under positive or negative pressure conditions. This equipment typically includes a valve body, inlet, outlet, and rotating blade structure, effectively controlling material flow and maintaining the system's airtightness.

[0003] like Figure 5 As shown, traditional pneumatic rotary valves typically use a venturi tube structure as the conveying pipe, connecting the rotary valve's outlet to the inlet on the side wall of the conveying pipe via a connecting pipe. However, this is not suitable for conveying ultralight materials (bulk density less than 0.3 kg / m³). 3 When ultralight materials are subjected to airflow, an air chamber effect can easily form within the valve body, causing the material to suspend near the inlet and unable to fall smoothly to the outlet. This phenomenon not only affects conveying efficiency but can also lead to material accumulation, blockage, and even affect the stable operation of the entire pneumatic conveying system.

[0004] Therefore, there is an urgent need for an improved pneumatic rotary valve that can effectively prevent the formation of air chambers, ensure the smooth transport of ultralight materials, and thus improve the adaptability and reliability of pneumatic conveying systems. Utility Model Content

[0005] To address the technical problems in the background art, this utility model discloses a pneumatic rotary valve.

[0006] This utility model provides a pneumatic rotary valve, including a valve body and a horizontally arranged conveying pipe. The upper end of the valve body is provided with a feed inlet and the lower end is provided with a discharge outlet, which is directly connected to the inlet on the side wall of the conveying pipe.

[0007] The delivery pipe is parallel to the axis of the valve body.

[0008] Furthermore, the rotating blades inside the valve body extend into the delivery pipe.

[0009] Furthermore, the conveying pipe is composed of an air inlet pipe, a material receiving pipe, and an air outlet pipe connected in sequence; the air inlet pipe and the air outlet pipe are constricted pipes.

[0010] Furthermore, the diameter of the receiving pipe decreases from the center to both ends; the inlet is located at the center of the receiving pipe.

[0011] Furthermore, the receiving pipe and the valve body are integrally formed and connected; the air inlet pipe and the receiving pipe are detachably connected; and the air outlet pipe and the receiving pipe are detachably linked.

[0012] Furthermore, the valve body includes a main body extending through both ends axially; end caps that are fixedly connected and sealed at both ends of the main body; and a receiving pipe integrally formed and connected to the main body.

[0013] Furthermore, the main body is located at the outlet to form a receiving cavity; the receiving pipe includes the receiving cavity and conical pipes that are connected to both ends of the receiving cavity and arranged symmetrically; the conical pipes are integrally formed and connected to the end caps.

[0014] The beneficial effects of this utility model are:

[0015] 1. By arranging the delivery pipe and valve body axially parallel, the channel formed between adjacent rotating blades is aligned with the flow path within the delivery pipe. This design effectively avoids the disordered vortex of airflow within the valve body found in traditional Venturi tube structures, preventing the flow of ultralight materials (bulk density <0.3kg / m³) from forming disordered vortices within the valve body. 3 The material is suspended near the feed inlet, which fundamentally solves the problem of material retention caused by the air chamber effect.

[0016] 2. The directly connected flow channel structure allows materials to fall naturally into the conveying pipe under the action of gravity, reducing airflow interference.

[0017] 3. The axial parallel layout simplifies the airflow path, reduces air pressure fluctuations in the delivery system, and thus reduces system energy consumption. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 yes Figure 2 Sectional view of AA;

[0022] Figure 4 This is an exploded view of the hidden parts of this utility model;

[0023] Figure 5 This is a front sectional view of a traditional pneumatic rotary valve;

[0024] In the diagram: 1. Valve body; 2. Conveying pipe; 3. Rotating blade; 11. Feed inlet; 21. Air inlet pipe; 22. Receiving pipe; 23. Air outlet pipe; 24. Inlet; 101. Main body; 102. End cap; 221. Receiving chamber; 222. Conical pipe; 223. Rotating chamber. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] like Figure 1-4 As shown, this utility model discloses a pneumatic rotary valve, including a valve body 1 and a horizontally arranged delivery pipe 2. The valve body 1 includes a main body 101 extending through both ends axially, and end caps 102 connected to and sealing both ends of the main body 101, which are fixed by bolts.

[0027] The upper end of the main body 101 is the feed inlet 11, which connects to the outside and is used to convey ultralight materials (bulk density <0.3kg / m³) into the valve body 1. 3 The lower end of the main body 101 is the discharge port, which is directly connected to the inlet 24 on the side wall of the conveying pipe 2.

[0028] The main body 101 is provided with a rotating cavity 223, and a rotating blade 3 is rotatably connected to the rotating cavity 223. The rotating shaft of the rotating blade 3 is coaxial with the rotating cavity 223. The rotating blade 3 is driven to rotate by a drive motor, so as to transport the material from the feed port 11 to the discharge port.

[0029] The conveying pipe 2 is located at the lower end of the valve body 1 and is parallel to the axis of rotation of the rotating blade 3. The conveying pipe 2 consists of an air inlet pipe 21, a material receiving pipe 22, and an air outlet pipe 23 connected in sequence. The air inlet pipe 21 and the material receiving pipe 22 are detachably connected and fixed by bolts; the air outlet pipe 23 and the material receiving pipe 22 are detachably connected and fixed by bolts.

[0030] The air inlet pipe 21 and the air outlet pipe 23 are tapered pipes. The diameter of the receiving pipe 22 decreases from the center to both ends; the inlet 24 is located at the center of the receiving pipe 22. This arrangement is used to reduce the air pressure at the outlet to improve the stability of the material falling.

[0031] The receiving pipe 22 consists of three parts: a receiving cavity 221 formed by the main body 101 at the discharge port, and tapered pipes 222 connected to both ends of the receiving cavity 221 and arranged symmetrically. The flared end of the tapered pipes 222 is connected to the receiving cavity 221. The upper end of the receiving cavity 221 is connected to and communicates with the upper end of the rotating cavity 223, and the rotating blades 3 extend downward to the receiving cavity 221. The tapered pipes 222 are integrally formed and connected to the end caps 102.

[0032] The split design of the rotary valve not only simplifies the structure and reduces the processing difficulty and cost, but also improves the structural stability of the rotary valve by integrating the tapered tube 222 with the end cap 102 and setting the receiving cavity 221 on the main body 101.

[0033] Compared to existing technologies, the advantages of this embodiment are: 1. By arranging the conveying pipe 2 and the valve body 1 axially parallel, the channel formed between adjacent rotating blades 3 is aligned with the flow channel within the conveying pipe 2. This design effectively avoids the disordered vortex of airflow within the valve body 1 in traditional Venturi tube structures, preventing the flow of ultralight materials (bulk density <0.3kg / m³) from swirling. 3 1) The material is suspended near the inlet 11, fundamentally solving the material retention problem caused by the air chamber effect. 2) The directly connected flow channel structure allows the material to fall naturally into the conveying pipe 2 under gravity, reducing airflow interference. 3) The axial parallel layout simplifies the airflow path, reduces air pressure fluctuations in the conveying system, and thus reduces system energy consumption.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pneumatic rotary valve, comprising a valve body (1) and a horizontally arranged conveying pipe (2), wherein the upper end of the valve body (1) is provided with a feed inlet (11) and the lower end is provided with a discharge outlet, characterized in that: The discharge port is directly connected to the inlet (24) on the side wall of the conveying pipe (2); The delivery pipe (2) is parallel to the axial direction of the valve body (1).

2. The air-assisted, rotary valve of claim 1, wherein: The rotating blade (3) inside the valve body (1) extends into the delivery pipe (2).

3. The air-assisted, rotary valve of claim 1, wherein: The conveying pipe (2) is composed of an air inlet pipe (21), a material receiving pipe (22), and an air outlet pipe (23) connected in sequence; The air inlet pipe (21) and air outlet pipe (23) are constricted pipes.

4. The air-assisted, rotary valve of claim 3, wherein: The diameter of the receiving pipe (22) decreases from the center to both ends; The inlet (24) is located at the center of the receiving pipe (22).

5. The air-assisted, rotary valve of claim 3, wherein: The receiving pipe (22) is integrally formed and connected with the valve body (1); The air inlet pipe (21) and the material receiving pipe (22) are detachably connected; The air outlet pipe (23) and the material receiving pipe (22) are detachably connected.

6. The air-assisted, rotary valve of claim 5, wherein: The valve body (1) includes a main body (101) extending through both ends axially; The two ends of the main body (101) are provided with end caps (102) that are fixedly connected and sealed; The receiving tube (22) is integrally formed and connected to the main body (101).

7. The air-assisted, rotary valve of claim 6, wherein: The main body (101) is located at the discharge port to form a receiving cavity (221); The receiving pipe (22) includes a receiving cavity (221) and tapered pipes (222) that are connected to both ends of the receiving cavity (221) and arranged symmetrically. The tapered tube (222) is integrally formed and connected with the end cap (102).

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