Valve plate clamping device of gas-solid adjusting valve

Abstract

A valve plate clamping device of a gas-solid adjusting valve is in a cuboid shape, a concave rectangular connecting groove is formed in the front end of the valve plate clamping device, the connecting groove is horizontally located in the center of the whole end face and penetrates through the left side face and the right side face, a fixing hole is formed in the center of the rear end face of the valve plate clamping device, the fixing hole penetrates into the valve plate clamping device, and the fixing hole is a non-circular hole. A rotating shaft driven by a motor is arranged in the fixing hole in a penetrating mode, and the part, located in the valve plate clamping device, of the rotating shaft is matched with the fixing hole in shape. The valve plate clamping device is novel in conception, ingenious in design, capable of stably clamping a valve plate to be connected with a driving mechanism, convenient to disassemble and assemble, capable of protecting the valve plate and remarkable in effect.

Description

Technical Field

[0001] This utility model belongs to the field of instrumentation, specifically a device for clamping and fixing the valve plate of a regulating valve applied to a gas-solid flow pipe. Background Technology

[0002] In industrial production, many scenarios require the rapid transport of gases and solid particles together to designated chambers, tanks, or furnaces for combustion, reaction, or dissolution. This fluid state of transporting gases and solid particles together is generally called gas-solid two-phase flow. Because two-phase flow differs from the transport of pure gases or pure solids / powders, and the physical properties of gases and solids are very different, regulating valves must be added when the two-phase flow passes through branch pipes to adjust the two-phase flow state in each branch pipe. This ensures that the flow rate, velocity, and concentration of the gas-solid two-phase flow are consistent in each branch pipe, thus guaranteeing the uniformity of the quality of subsequent processes.

[0003] In the prior art, regulating valves used to regulate gas-solid two-phase flow have various structural designs and working principles. One type is a regulating valve that uses a flipping valve plate for regulation. The valve plate has a pre-set gap or hole. Existing patent CN112128394A discloses a pulverized coal flow regulating valve and its control method for a boiler air-pulverized coal pipeline. The core component of the regulating valve is a double comb-tooth valve plate. The pulverized coal flow is regulated by adjusting the double comb-tooth valve plate.

[0004] However, in the rapid transport pipeline of gas-solid two-phase flow, the presence of solid particles causes severe wear on any structure within the pipeline. To combat this wear, ceramic coatings are added to the inner wall of the pipeline, and components installed inside the pipeline are replaced with high-strength, wear-resistant materials, such as the valve plate of the gas-solid two-phase flow regulating valve. However, wear-resistant materials are often brittle, with poor toughness and stress dispersion performance. This means that when valve plates made of wear-resistant materials are directly connected to the drive mechanism, not only is careful installation required to avoid impacts, but stress accumulation after a certain period of use can also cause localized breakage at the connection point, resulting in a short service life, high cost, and difficulty in meeting the requirements. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a valve plate clamping device for a gas-solid regulating valve, which can clamp the valve plate and connect it to the drive mechanism.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0007] A valve plate clamping device for a gas-solid regulating valve is disclosed, which clamps the valve plate at both ends of the gas-solid two-phase flow high-speed pipeline regulating valve. Driven by a motor, the valve plate rotates. In this utility model, the valve plate clamping device is rectangular in shape, with a concave rectangular connecting groove at the front end. The connecting groove is horizontally located at the center of the entire end face and extends through the left and right sides. A fixing hole is opened at the center of the rear end face of the valve plate clamping device. The fixing hole is not a circular hole, and a rotating shaft driven by a motor passes through the fixing hole. The shape of the part of the rotating shaft inside the valve plate clamping device matches the fixing hole.

[0008] In this utility model, the valve plate is provided with concave rectangular assembly grooves at both ends, and the valve plate clamping device is provided with horizontal concave limiting grooves on both sides. The limiting grooves are connected to the connecting grooves, and the limiting grooves and the connecting grooves are of equal width. The width of the limiting grooves is not less than the thickness of the valve plate, and the distance between the bottom surfaces of the two limiting grooves is not less than the width of the valve plate assembly groove. The valve plate and the limiting grooves are fitted with a clearance fit.

[0009] In this utility model, the valve plate clamping device includes two upper and lower halves with the same structure. The two halves fit together and the connection is located at the center line of the limiting groove and the connecting groove. The fixing hole is divided into two interlocking halves. The upper and lower halves of the valve plate clamping device are connected by bolts. The upper and lower surfaces of the valve plate clamping device have corresponding bolt holes that pass through each other. Fastening bolts are inserted into the bolt holes.

[0010] Furthermore, bolt holes are opened at the center of the upper and lower surfaces of the valve plate clamping device. The fastening bolts inserted in the bolt holes contact the side of the rotating shaft in the fixing holes. The fixing holes are square holes or regular hexagonal holes, and are located at the highest or lowest point of the upper and lower halves of the valve plate clamping device as horizontal planes, so that the fixing holes of the upper or lower half of the valve plate clamping device are rectangular grooves or trapezoidal grooves.

[0011] In this utility model, the fixing hole on the rear end face of the valve plate clamping device is raised in a ring shape to form a reinforcing ring that strengthens the fixing hole structure. The outer diameter of the reinforcing ring is smaller than the upper and lower thicknesses of the valve plate clamping device and also smaller than the distance between the bottom surfaces of the left and right limiting grooves of the valve plate clamping device.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This application uses a two-end clamping and limiting method to clamp and limit the valve plate at the center of the regulating valve, that is, the center of the gas-solid two-phase flow high-speed pipeline. It can rotate freely under the drive of the motor, and the clamping is firm and the limiting effect is good.

[0014] This application uses a limiting groove and a connecting groove to cooperate with the assembly groove of the valve plate. While ensuring the limiting of the valve plate, the valve plate clamping devices at both ends can also effectively ensure the centering effect of the valve plate installation.

[0015] The valve plate clamping device of this application adopts the method of fixing the upper and lower halves with bolts, which not only ensures the stability of its own center of gravity, but also facilitates disassembly and installation.

[0016] This application uses a non-rotating plug-in connection with the motor-driven shaft, effectively preventing the connection from loosening after long-term rotation and vibration. The valve plate clamping device is also equipped with bolts to fix the shaft, further reinforcing the shaft, ensuring a stable connection and good performance.

[0017] Therefore, this utility model has a novel concept and ingenious design, which can stably clamp the valve plate and drive mechanism, is easy to disassemble and assemble, can protect the valve plate, and has a significant effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation state of this utility model;

[0019] Figure 2 This is a schematic diagram of the front end of the present invention;

[0020] Figure 3 This is a schematic diagram of the rear end face of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure 1 (Right side).

[0022] In the diagram: 1. Valve plate; 2. Pipe; 3. Valve plate clamping device; 4. Rotating shaft; 5. Connecting groove; 6. Limiting groove; 7. Fixing hole; 8. Reinforcing ring; 9. Bolt hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0024] A valve plate clamping device 3 for a gas-solid regulating valve, such as Figure 1 As shown, the valve plate 1 is clamped at both ends of the regulating valve of the gas-solid two-phase flow high-speed pipeline 2, and is rotatably connected to the valve body of the regulating valve through the rotating shaft 4. The rotating shaft 4 is driven by a motor, which further drives the rotation of the valve plate 1. The valve plate 1 has concave rectangular assembly grooves at both ends, and the valve plate clamping device 3 cooperates with the assembly grooves.

[0025] exist Figure 2 and Figure 3In the middle, the valve plate clamping device 3 is rectangular in shape, with a concave rectangular connecting groove 5 at its front end. The connecting groove 5 is horizontally located at the center of the entire end face and runs through both the left and right sides. Horizontal concave limiting grooves 6 are formed on both sides of the valve plate clamping device 3. The limiting grooves 6 are connected to the connecting groove 5, and the limiting grooves 6 and the connecting groove 5 are of equal width. The width of the limiting grooves 6 is not less than the thickness of the valve plate 1, and the distance between the bottom surfaces of the two limiting grooves 6 is not less than the width of the valve plate 1 mounting groove. The valve plate 1 and the limiting grooves 6 are in clearance fit. The rear of the valve plate clamping device 3... A fixing hole 7 is opened in the center of the end face. The fixing hole 7 extends into the valve plate clamping device 3. The fixing hole 7 is a square hole, and the highest and lowest points of the fixing hole 7 are horizontal planes. One end of the rotating shaft 4 is inserted into the fixing hole 7. The shape of this section of the rotating shaft 4 matches the fixing hole 7. The fixing hole 7 on the rear end face of the valve plate clamping device 3 is raised in a ring shape to form a reinforcing ring 8 that strengthens the structure of the fixing hole 7. The outer diameter of the reinforcing ring 8 is smaller than the upper and lower thickness of the valve plate clamping device 3, and also smaller than the distance between the bottom surfaces of the left and right limiting grooves 6 of the valve plate clamping device 3.

[0026] like Figure 4 As shown, the valve plate clamping device 3 includes two identical upper and lower halves that fit together. The connection point is located at the center line of the limiting groove 6 and the connecting groove 5, and the fixing hole 7 is divided into two interlocking halves. The upper and lower halves of the valve plate clamping device 3 are connected by bolts. The upper and lower surfaces of the valve plate clamping device 3 have corresponding through bolt holes 9. Fastening bolts are inserted into the bolt holes 9. The center of the upper and lower surfaces of the valve plate clamping device 3 has bolt holes 9. The fastening bolts inserted into the bolt holes 9 are in contact with the side of the rotating shaft 4 in the fixing hole 7.

[0027] This invention relates to a regulating valve for a high-speed gas-solid two-phase flow pipeline. The regulating valve is used to regulate the mass flow rate, velocity, and gas-solid concentration of solid particles in the pipeline. The valve plate clamping device 3 of this invention is used to clamp and fix the valve plate 1 of the regulating valve. During installation, the two halves of the valve plate clamping device 3 are aligned, and the front end is clamped to the assembly groove of the valve plate 1. After clamping, the fastening bolts are inserted into the bolt holes 9 located outside the center to initially fix the upper and lower halves. Then, the valve plate 1 and the valve plate clamping device 3 are placed in the valve body of the regulating valve. After inserting the rotating shaft 4, all the fastening bolts are tightened. Then, the regulating valve is assembled, thus completing the clamping of the valve plate 1 by the valve plate clamping device 3. For disassembly, the above process is simply reversed.

[0028] In summary, based on the above structure and working process, it can be seen that this utility model has a novel concept and ingenious design, can stably clamp the valve plate and drive mechanism, is easy to disassemble and assemble, can protect the valve plate, and has significant effects.

Claims

1. A valve plate clamping device for a gas-solid regulating valve, clamping both ends of the valve plate of a gas-solid two-phase flow high-speed pipeline regulating valve, driven by a motor to rotate the valve plate, characterized in that: The valve plate clamping device is cuboid in shape, and a recessed rectangular connecting groove is formed in the front end of the valve plate clamping device. The connecting groove is horizontally located in the center of the entire end surface and penetrates through the left and right side surfaces. A fixing hole is formed in the center of the rear end surface of the valve plate clamping device, and the fixing hole penetrates into the valve plate clamping device. The fixing hole is a non-circular hole, and a rotating shaft driven by a motor is arranged in the fixing hole. The shape of the part of the rotating shaft located in the valve plate clamping device is matched with the fixing hole.

2. The valve plate clamping device of claim 1, wherein: The valve plate is provided with recessed rectangular assembly grooves at both ends, and horizontal recessed limiting grooves are formed in the left and right side surfaces of the valve plate clamping device. The limiting grooves are communicated with the connecting grooves, and the limiting grooves have the same width as the connecting grooves. The width of the limiting grooves is not less than the thickness of the valve plate, and the distance between the bottom surfaces of the two limiting grooves is not less than the width of the valve plate assembly groove. The valve plate is in clearance fit with the limiting grooves.

3. The valve plate clamping device of claim 1, wherein: The valve plate clamping device comprises two upper and lower halves with consistent structures. The two halves are attached to each other, and the connecting part is located on the center line of the limiting groove and the connecting groove and divides the fixing hole into two halves that are buckled to each other. The upper and lower halves of the valve plate clamping device are connected by bolts. Corresponding bolt holes are formed in the upper and lower surfaces of the valve plate clamping device and penetrate through the upper and lower surfaces. Fastening bolts are arranged in the bolt holes.

4. The valve plate clamping device of claim 3, wherein: The center of the upper and lower surfaces of the valve plate clamping device is provided with a bolt hole, and the fastening bolt arranged in the bolt hole is in contact with the side surface of the rotating shaft in the fixing hole. The fixing hole is a square hole or a regular hexagonal hole, and the highest part or the lowest part of the upper and lower halves of the valve plate clamping device is a horizontal plane, so that the fixing hole of the upper half or the lower half of the valve plate clamping device appears as a rectangular groove or a trapezoidal groove.

5. The valve plate clamping device of claim 1, wherein: The fixing hole of the rear end surface of the valve plate clamping device is protruded around the fixing hole to form a reinforcing ring that strengthens the structure of the fixing hole. The outer diameter of the reinforcing ring is smaller than the upper and lower thicknesses of the valve plate clamping device and smaller than the distance between the bottom surfaces of the left and right limiting grooves of the valve plate clamping device.

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