A regulating valve

Abstract

The utility model relates to a kind of regulating valve in regulating valve technical field, including valve body and adjusting piece, the inside of valve body is equipped with the valve core for switch, driving rod that can move up and down is equipped between valve body and adjusting piece, driving rod extends to the inside of valve body and is connected with valve core, the middle part of valve body is equipped with through hole, the bottom end of valve core is the inclined contract part of conical frustum, the inner wall of through hole is the abutment cone surface that inclines outward, the inclined contract part of valve core can be embedded in the inner wall of through hole, the clearance width of abutment cone surface and inclined contract part can be adjusted by driving rod to valve core, the height adjusting position of driving rod and valve core can be effectively converted into the clearance change of abutment cone surface and inclined contract part, to improve the flow regulation accuracy between first flow channel and second flow channel.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, and in particular to a regulating valve. Background Technology

[0002] Control valves, also known as regulating valves, are key devices in industrial automation process control that regulate parameters such as flow rate, pressure, temperature, and liquid level of the medium. They are widely used in chemical, power, and metallurgical industries. They automatically adjust their opening degree by receiving signals from the control system, achieving precise control of process parameters.

[0003] The existing device consists of an actuator and a valve body, with driving methods including pneumatic diaphragm type and cylinder type. However, the valve cores inside the existing regulating valves are all disc type and cover plate type, resulting in poor closing accuracy. Therefore, there is an urgent need to develop a regulating valve to meet the needs of practical applications. Utility Model Content

[0004] The purpose of this invention is to provide a regulating valve to solve the above-mentioned defects.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A regulating valve includes a valve body and a regulating component. The valve body has a valve core for switching on and off inside. A drive rod that can move up and down is provided between the valve body and the regulating component. The drive rod extends into the valve body and connects with the valve core. A through hole is provided in the middle of the valve body. The bottom end of the valve core is a frustum-shaped wedge. The inner wall of the through hole is an outwardly inclined abutment cone surface. The wedge of the valve core can be embedded in the inner wall of the through hole. The gap width between the abutment cone surface and the wedge can be adjusted by the drive rod.

[0007] As a further embodiment of the above description, the valve body is provided with a first flow channel and a second flow channel at both ends, and the first flow channel and the second flow channel are connected by a through hole to form a conductive structure.

[0008] As a further embodiment of the above description, the valve body is provided with mounting flanges at both ends, and the mounting flanges are located at the ports of the first flow channel and the second flow channel.

[0009] As a further embodiment of the above description, the adjusting component includes an upper shell, a lower shell, and a diaphragm. The diaphragm is clamped and fixed between the upper shell and the lower shell, and the diaphragm is an elastic sheet-like structure.

[0010] In the above description, as a further embodiment, the top end of the drive rod penetrates through the valve body, the lower shell, and the diaphragm. The top end of the drive rod is fixedly connected to the center of the diaphragm. The bottom end of the drive rod extends into the interior of the valve body. The top end of the valve core is a columnar connecting post with a hole diameter smaller than the through hole. The valve core is fixedly connected to the drive rod through the connecting post.

[0011] As a further embodiment, the top of the adjusting component is provided with an adjusting cylinder, and the inside of the adjusting cylinder is provided with a rotatable adjusting screw. The bottom end of the adjusting screw extends into the interior of the adjusting component, and the adjusting screw is threadedly connected to the adjusting component. The bottom end of the adjusting screw abuts against the top end of the driving rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by opening a through hole in the middle of the valve body and designing a valve core with a truncated cone-shaped wedge, the wedge of the valve core can be embedded in the inner wall of the through hole. The valve core can adjust the gap width between the abutting cone surface and the wedge through the drive rod. This can effectively transform the height adjustment position of the drive rod and the valve core into the gap change between the abutting cone surface and the wedge, thereby improving the flow regulation accuracy between the first flow channel and the second flow channel. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a regulating valve as described in this embodiment;

[0014] Figure 2 This is a cross-sectional view of a regulating valve as described in this embodiment;

[0015] Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A in the diagram;

[0016] In the figure: 1-valve body, 11-first flow channel, 12-second flow channel, 13-mounting flange, 14-through hole, 141-abutting conical surface, 2-adjusting component, 21-upper shell, 22-lower shell, 3-adjusting cylinder, 4-adjusting screw, 5-diaphragm, 6-valve core, 61-connecting column, 62-wedge, 7-drive rod. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] For this embodiment, please refer to Figures 1-3The specific implementation of the regulating valve includes a valve body 1 and a regulating component 2. The valve body 1 is provided with a valve core 6 for switching. A drive rod 7 that can move up and down is provided between the valve body 1 and the regulating component 2. The drive rod 7 extends into the interior of the valve body 1 and connects with the valve core 6. A through hole 14 is provided in the middle of the valve body 1. The bottom end of the valve core 6 is a truncated cone-shaped wedge 62. The inner wall of the through hole 14 is an outwardly inclined abutment cone surface 141. The wedge 62 of the valve core 6 can be embedded in the inner wall of the through hole 14. The valve core 6 can adjust the gap width between the abutment cone surface 141 and the wedge 62 through the drive rod 7.

[0019] Specifically, such as Figure 3 As shown, by providing a through hole 14 in the middle of the valve body 1 and designing a valve core 6 with a truncated cone-shaped wedge 62, the wedge 62 of the valve core 6 can be embedded in the inner wall of the through hole 14. The valve core 6 can adjust the gap width between the abutting cone 141 and the wedge 62 through the drive rod 7, which can effectively convert the height adjustment position of the drive rod 7 and the valve core 6 into the gap change between the abutting cone 141 and the wedge 62, thereby improving the flow regulation accuracy between the first flow channel 11 and the second flow channel 12.

[0020] Specifically, such as Figure 2 As shown, the valve body 1 has a first flow channel 11 and a second flow channel 12 at both ends, and the first flow channel 11 and the second flow channel 12 are connected by a through hole 14. Both ends of the valve body 1 are provided with mounting flanges 13, which are located at the ports of the first flow channel 11 and the second flow channel 12.

[0021] Specifically, such as Figure 2 As shown, the regulating component 2 includes an upper shell 21, a lower shell 22, and a diaphragm 5. The diaphragm 5 is clamped and fixed between the upper shell 21 and the lower shell 22. The diaphragm 5 is an elastic sheet structure. The top end of the drive rod 7 passes through the valve body 1, the lower shell 22, and the diaphragm 5. The top end of the drive rod 7 is fixedly connected to the center of the diaphragm 5. The bottom end of the drive rod 7 extends into the interior of the valve body 1. The top end of the valve core 6 is a columnar connecting post 61. The diameter of the connecting post 61 is smaller than that of the through hole 14. The valve core 6 is fixedly connected to the drive rod 7 through the connecting post 61.

[0022] In a further embodiment, the top of the adjusting component 2 is further provided with an adjusting cylinder 3. Inside the adjusting cylinder 3 is a rotatable adjusting screw 4. The bottom end of the adjusting screw 4 extends into the interior of the adjusting component 2 and is threadedly connected to the adjusting component 2. The bottom end of the adjusting screw 4 abuts against the top end of the drive rod 7. By rotating the adjusting screw 4 at the top of the adjusting cylinder 3, the adjusting screw 4 rotates threadedly against the top surface of the upper shell 21. The adjusting screw 4 moves up and down within the adjusting cylinder 3, allowing the contact height between the drive rod 7 and the adjusting screw 4 to be adjusted.

[0023] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A regulating valve, comprising a valve body and a regulating element, characterized in that: The valve body has a valve core for switching inside. A drive rod that can move up and down is provided between the valve body and the adjusting component. The drive rod extends into the valve body and connects with the valve core. A through hole is opened in the middle of the valve body. The bottom end of the valve core is a truncated cone-shaped wedge. The inner wall of the through hole is an outwardly inclined abutting cone surface. The wedge of the valve core can be embedded in the inner wall of the through hole. The gap width between the abutting cone surface and the wedge can be adjusted by the drive rod.

2. A regulating valve according to claim 1, characterized in that: The valve body has a first flow channel and a second flow channel at both ends, and the first flow channel and the second flow channel are connected by a through hole to form a conductive structure.

3. A regulating valve according to claim 2, characterized in that: The valve body is provided with mounting flanges at both ends, and the mounting flanges are located at the ports of the first flow channel and the second flow channel.

4. A regulating valve according to claim 1, characterized in that: The adjusting component includes an upper shell, a lower shell, and a diaphragm. The diaphragm is clamped and fixed between the upper shell and the lower shell, and the diaphragm is an elastic sheet structure.

5. A regulating valve according to claim 4, characterized in that: The top end of the drive rod penetrates through the valve body, lower shell, and diaphragm. The top end of the drive rod is fixedly connected to the center of the diaphragm. The bottom end of the drive rod extends into the interior of the valve body. The top end of the valve core is a columnar connecting post with a hole diameter smaller than the through hole. The valve core is fixedly connected to the drive rod through the connecting post.

6. A regulating valve according to any one of claims 1-5, characterized in that: The top of the adjusting component is also provided with an adjusting cylinder, and the inside of the adjusting cylinder is provided with a rotatable adjusting screw. The bottom end of the adjusting screw extends into the interior of the adjusting component, and the adjusting screw is threadedly connected to the adjusting component. The bottom end of the adjusting screw abuts against the top end of the driving rod.

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