Pneumatic conveying valve capable of automatically stabilizing pressure

Abstract

The utility model discloses an automatic pressure stabilizing pneumatic conveying valve which comprises a valve body, a valve ball is rotationally connected in the valve body, a valve rod is fixedly connected to the top of the valve ball, the top end of the valve rod penetrates out of the top of the valve body, a cavity is formed in the valve body, and a supporting frame is fixedly connected between the inner walls of the two sides of the valve body. A guide sleeve is fixedly connected to one side of the supporting frame, a guide rod is slidably inserted into the guide sleeve, the outer wall of the guide rod is sleeved with a spring, one end of the guide rod is fixedly connected with an adjusting plate, the adjusting plate is located in the cavity, the other end of the guide rod is fixedly connected with a limiting plate, and the outer wall of the valve rod is sleeved with a plurality of sealing rings. Through the arrangement of the guide rod, the spring and the adjusting plate, the adjusting plate is pushed to move towards the valve ball under the pushing force of material conveying, so that the distance between the adjusting plate and the valve ball is reduced, the conveying flow of materials is reduced, the automatic pressure stabilizing effect is achieved, and the pneumatic conveying stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic conveying valve technology, and in particular to an automatic pressure-stabilizing pneumatic conveying valve. Background Technology

[0002] Pneumatic conveying, also known as pneumatic air conveying, utilizes the energy of airflow to transport granular materials along the airflow direction within a closed pipeline. It features high conveying efficiency, simple equipment structure, convenient maintenance and management, and ease of implementation. Pneumatic conveying often uses pneumatic conveying valves to control the gas flow.

[0003] Currently, existing pneumatic conveying systems often experience varying air pressure fluctuations, leading to inconsistent material discharge speeds and affecting the stability of the pneumatic conveying process. Consequently, this impacts the conveying efficiency and accuracy of the materials. Therefore, in order to improve the stability of pneumatic conveying and to advance industry technology and enhance core technological competitiveness, this application proposes a new implementation scheme that differs from the existing pneumatic conveying valve structure and application method. Utility Model Content

[0004] The purpose of this invention is to solve the problem that different air pressure fluctuations often occur during existing pneumatic conveying, resulting in inconsistent material discharge speeds in the pneumatic conveying system and affecting the stability of pneumatic conveying. Therefore, an automatic pressure-stabilizing pneumatic conveying valve is proposed.

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

[0006] An automatic pressure-stabilizing pneumatic conveying valve includes a valve body, a valve ball rotatably connected inside the valve body, a valve stem fixedly connected to the top of the valve ball, the top end of the valve stem protruding from the top of the valve body, a cavity provided inside the valve body, a support frame fixedly connected between the inner walls of the two sides of the valve body, a guide sleeve fixedly connected to one side of the support frame, a guide rod slidably inserted into the guide sleeve, a spring sleeved on the outer wall of the guide rod, an adjusting plate fixedly connected to one end of the guide rod, the adjusting plate being located inside the cavity, and a limit plate fixedly connected to the other end of the guide rod.

[0007] Furthermore, the outer wall of the valve stem is fitted with multiple sealing rings.

[0008] Furthermore, a sealing cover plate is fixedly connected to the top of the valve body, and the top of the valve stem passes through the sealing cover plate.

[0009] Furthermore, an electric actuator is fixedly connected to the top of the valve stem.

[0010] Furthermore, both ends of the valve body are fixedly connected to connecting flanges, and the connecting flanges are provided with multiple mounting holes.

[0011] Furthermore, a pressure gauge is inserted into the top of the valve body, and the pressure gauge is fixed to the valve body by bolts.

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

[0013] 1. By setting up guide rods, springs, and adjusting plates, the adjusting plate is pushed towards the valve ball under the thrust of material conveying, thereby reducing the distance between the adjusting plate and the valve ball, and thus reducing the material conveying flow rate, thereby playing an automatic pressure stabilizing role and improving the stability of pneumatic conveying.

[0014] 2. By using a sealing ring, the valve stem and valve body are sealed to prevent gas leakage and ensure the delivery of gas. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an automatic pressure-stabilizing pneumatic conveying valve proposed in this utility model.

[0016] Figure 2 This is a side view of the pneumatic conveying valve with automatic pressure stabilization proposed in this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of an automatic pressure-stabilizing pneumatic conveying valve proposed in this utility model.

[0018] In the diagram: 1. Valve body; 2. Valve ball; 3. Valve stem; 4. Sealing ring; 5. Cavity; 6. Support frame; 7. Guide sleeve; 8. Guide rod; 9. Spring; 10. Adjusting plate; 11. Limiting plate; 12. Sealing cover plate; 13. Electric actuator; 14. Connecting flange; 15. Mounting hole; 16. Pressure gauge. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1-3 An automatic pressure-stabilizing pneumatic conveying valve includes a valve body 1, a valve ball 2 rotatably connected inside the valve body 1, a valve stem 3 fixed to the top of the valve ball 2 by bolts, the top of the valve stem 3 protruding from the top of the valve body 1, and an electric actuator 13 fixed to the top of the valve stem 3 by bolts. The electric actuator 13 enables the valve ball 2 to rotate inside the valve body 1, thereby realizing the opening and closing function of the valve.

[0021] The valve body 1 has a cavity 5 inside. A support frame 6 is fixed between the inner walls of the two sides of the valve body 1 by bolts. A guide sleeve 7 is welded to one side of the support frame 6. A guide rod 8 is slidably inserted into the guide sleeve 7. A spring 9 is sleeved on the outer wall of the guide rod 8. The stiffness coefficient of the spring 9 is 80-150N / mm, and the preload is 10-15mm. An adjusting plate 10 is welded to one end of the guide rod 8. The adjusting plate 10 is located inside the cavity 5. The working surface of the adjusting plate 10 is sprayed with a 0.3mm thick tungsten carbide layer. When the spring 9 is released, the adjusting plate 10 is reset.

[0022] Under the thrust of material conveying, the regulating plate 10 is pushed to move towards the valve ball 2, thereby reducing the distance between the regulating plate 10 and the valve ball 2, and thus reducing the material conveying flow rate, thereby playing an automatic pressure stabilizing role.

[0023] A limiting plate 11 is welded to the other end of the guide rod 8. The guide rod 8 guides the movement of the adjusting plate 10, and the limiting plate 11 prevents the guide rod 8 from slipping out of the guide sleeve 7.

[0024] Multiple sealing rings 4 are fitted onto the outer wall of the valve stem 3. The sealing rings 4 are made of fluororubber and are resistant to temperatures from -20℃ to 150℃, thereby sealing the valve stem 3 and the valve body 1 and preventing gas leakage.

[0025] A sealing cover plate 12 is fixed to the top of the valve body 1 by bolts, and the top of the valve stem 3 passes through the sealing cover plate 12, thereby facilitating the installation and disassembly of the valve stem 3.

[0026] Both ends of the valve body 1 are welded with connecting flanges 14, and the connecting flanges 14 are provided with multiple mounting holes 15. The connecting flanges 14 and the mounting holes 15 facilitate the fixed installation of the valve body 1 and the conveying pipeline.

[0027] A pressure gauge 16 is inserted into the top of the valve body 1, and the pressure gauge 16 is fixed to the valve body 1 by bolts, which facilitates the detection of the transmission pressure.

[0028] The working principle of this embodiment is as follows: In use, the valve body 1 is fixedly installed with the conveying pipeline through the connecting flange 14 and the mounting hole 15. Then, the electric actuator 13 drives the valve stem 3 to rotate, thereby driving the valve ball 2 to rotate, and thus opening the conveying valve to facilitate the conveying of materials. When the outlet pressure is set to the target pressure by the preload of the spring 9, the material is conveyed normally. When the outlet pressure increases, the adjusting plate 10 is pushed towards the valve ball 2 by the thrust of the material conveying, thereby reducing the distance between the adjusting plate 10 and the valve ball 2, and thus reducing the material conveying flow rate, thereby playing an automatic pressure stabilizing role. When the outlet pressure is too low, the spring 9 is released, the distance between the adjusting plate 10 and the valve ball 2 is reset, thereby restoring the normal flow rate.

[0029] 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. An automatically pressure-stabilized pneumatic conveying valve comprising a valve body (1), characterized in that, A valve ball (2) is rotatably connected inside the valve body (1). A valve stem (3) is fixedly connected to the top of the valve ball (2). The top of the valve stem (3) protrudes from the top of the valve body (1). A cavity (5) is provided inside the valve body (1). A support frame (6) is fixedly connected between the inner walls of the two sides of the valve body (1). A guide sleeve (7) is fixedly connected to one side of the support frame (6). A guide rod (8) is slidably inserted inside the guide sleeve (7). A spring (9) is sleeved on the outer wall of the guide rod (8). An adjusting plate (10) is fixedly connected to one end of the guide rod (8). The adjusting plate (10) is located inside the cavity (5). A limit plate (11) is fixedly connected to the other end of the guide rod (8).

2. An automatically pressure-stabilized air pressure conveying valve according to claim 1, characterized in that The outer wall of the valve stem (3) is fitted with multiple sealing rings (4).

3. The self-regulating air pressure transfer valve according to claim 1, wherein The valve body (1) is fixedly connected to a sealing cover plate (12), and the top end of the valve stem (3) passes through the sealing cover plate (12).

4. The self-regulating, air operated transfer valve of claim 1 wherein, An electric actuator (13) is fixedly connected to the top of the valve stem (3).

5. The self-regulating, air operated transfer valve of claim 1 wherein, Both ends of the valve body (1) are fixedly connected to connecting flanges (14), and the connecting flanges (14) are provided with multiple mounting holes (15).

6. An automatically pressure-stabilized air pressure conveying valve according to claim 1, characterized in that A pressure gauge (16) is inserted into the top of the valve body (1), and the pressure gauge (16) is fixed to the valve body (1) by bolts.

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