Flow control structure of regulating valve
By adopting the sliding movement between the valve core and the sleeve and the design of the adjustment plate in the regulating valve, the refined adjustment of the flow is achieved, and the problem of insufficient accuracy in the fine-tuning of the flow of the existing regulating valve is solved.
Patent Information
- Application Number
- CN202520943547.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2035-05-14
AI Technical Summary
Existing control valves are difficult to achieve refined control when flow regulation, especially when fine-tuning of flow is required, due to the problem of thread accuracy.
A flow control structure of the control valve is designed, which adopts the sliding movement between the valve core and the sleeve. Through the coordination of the adjustment plate and the elastic member, the precise cutting and fine adjustment of the flow channel can be achieved.
The refined adjustment of flow rate is achieved, and the adjustment plate can be gradually driven down when the valve core is moved down, close to the sealed flow channel, and micro-adjustment is achieved through the design of adjustment holes and through holes, avoiding the problem of inaccurate adjustment caused by insufficient thread accuracy in traditional adjustment methods.
Smart Images
Figure CN223049434U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of valves, and more specifically, to a flow control structure for a regulating valve. Background Art
[0002] As a core actuating element in an industrial automation control system, a regulating valve is widely used in fluid control scenarios in fields such as petrochemical industry, electric power energy, pharmaceutical and food industries. Its core function is to accurately regulate parameters such as the flow rate and pressure of pipeline media through the mechanical movement of the internal structure of the valve body. Traditional regulating valves (such as globe valves, butterfly valves, ball valves, etc.) mostly use the linear displacement or rotational angle change between the valve core and the valve seat to adjust the flow cross-sectional area, thereby controlling the flow rate.
[0003] However, in the prior art, the flow regulation of a regulating valve mostly relies on the mechanical transmission of the lead of the valve stem thread and the rotational angle of the handwheel, and uses the displacement of the valve core to adjust the flow rate. This adjustment method is more suitable for the regulation of large flow rates and cannot adapt to the environment that requires fine flow adjustment due to the problem of thread accuracy. Summary of the Utility Model
[0004] The utility model provides a flow control structure for a regulating valve, which can perform more refined flow regulation.
[0005] To achieve the above object, the utility model provides the following technical solution: A flow control structure for a regulating valve, including a valve body, a flow channel is formed in the valve body, a sleeve, a valve core and an actuator are further arranged in the valve body, the actuator is connected to the valve core and slides in the sleeve to adjust and cut off the flow channel, a plurality of regulating plates are arranged in the valve body, the regulating plates are respectively fixed at the bottom of the sleeve, slide in the sleeve, and the regulating plates are symmetrically arranged on the sleeve, the bottom of the valve core is fixed with the regulating plates, an elastic member for connecting the regulating plates is arranged on the sleeve, a plurality of regulating holes are arranged on the regulating plates, when the actuator drives the valve core, the valve core drives a plurality of regulating plates to closely adhere to each other and cut off the flow channel, and adjacent regulating plates seal the regulating holes.
[0006] The utility model is further arranged as: The elastic member includes a limiting groove and a reset spring piece, the limiting groove is arranged on the sleeve, sliding protrusions are arranged at both ends of some of the regulating plates, the sliding protrusions slide in the limiting groove and the reset spring piece is arranged in the limiting groove and drives the regulating plates to reset.
[0007] The utility model is further arranged as: A sealing portion is formed at the bottom of the valve core, the sealing portion includes a plurality of moving portions, the adjacent moving portions are slidably connected, a sealing member is arranged at one end of the moving portion facing the regulating plate, when the actuator controls the valve core to cut off, the moving portion closely adheres to the regulating plate to form a seal.
[0008] The present utility model is further configured as follows: The seal includes a sealing edge and a sealing ring. The sealing edge is disposed on the side of the moving part facing the adjusting plate, and the sealing ring is snap-fitted inside the moving part.
[0009] The present utility model is further configured as follows: One end of the moving part is recessed to form a first sliding groove and a second limiting sliding groove, and the other end forms a sliding protrusion and a limiting edge. The end of the second limiting sliding groove facing away from the first sliding groove communicates with the outside. One end of the sliding protrusion forms symmetric driving edges. When the sliding protrusion is located in the first sliding groove, a sliding gap is formed between the sliding protrusion and the first sliding groove.
[0010] The present utility model is further configured as follows: A plurality of through holes are further provided on the valve core.
[0011] The present utility model has the following effects: By providing the adjusting plate and providing adjusting holes on the adjusting plate, during normal use, the fluid can flow through between the adjusting plates and the adjusting holes. As the valve core moves downward, it drives the adjusting plate to move downward, gradually driving the adjusting plates at both ends to move downward until they are close to the sealing flow channel. At the same time, through holes are provided at both ends of the valve core. During intermediate adjustment, the fluid can flow through the through holes to achieve the purpose of micro-adjusting the fluid. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram of the present utility model;
[0013] Figure 2 is an enlarged view of part A;
[0014] Figure 3 is a cross-sectional view of the adjacent moving parts of the present utility model;
[0015] Figure 4 is a schematic structural diagram of the sliding protrusion of the present utility model.
[0016] In the figure: 1, valve body; 2, sleeve; 3, valve core; 4, adjusting plate; 41, adjusting hole; 5, elastic member; 51, limiting groove; 52, reset spring piece; 6, moving part; 61, sealing edge; 62, sealing ring; 63, first sliding groove; 64, second limiting sliding groove; 65, sliding protrusion; 66, limiting edge; 67, sliding gap; 7, through hole. Detailed Embodiment
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0019] Refer to Figures 1 to 4 for further description of the embodiments of the present utility model.
[0020] A flow control structure of a regulating valve, including a valve body 1. A flow channel is formed in the valve body 1. A sleeve 2, a valve core 3 and an actuator are further arranged in the valve body 1. The actuator is connected to the valve core 3 and slides in the sleeve 2 to adjust and cut off the flow channel. A plurality of regulating plates 4 are arranged in the valve body 1. The regulating plates 4 are respectively fixed to the bottom of the sleeve 2, slide in the sleeve 2, and the regulating plates 4 are symmetrically arranged on the sleeve 2. The regulating plates 4 are fixed to the bottom of the valve core 3. An elastic member 5 for connecting the regulating plates 4 is arranged on the sleeve 2. A plurality of regulating holes 41 are arranged on the regulating plates 4. When the actuator drives the valve core 3, the valve core 3 drives a plurality of regulating plates 4 to be in close contact with each other and cut off the flow channel. Adjacent regulating plates 4 seal the regulating holes 41. Refer to Figure 1 In [reference], the left side of the valve body 1 is the inlet end. During use, the fluid enters the valve body 1 from the left end. At this time, the valve is opened, and the fluid can pass through between the regulating plates 4. When the actuator starts to cut off, the valve core 3 moves downward under the action of the actuator. The regulating plates 4 on the valve core 3 squeeze and contact the lower movable regulating plates 4. At this time, the fluid can only pass through between the separated regulating plates 4 and the regulating holes 41. This is the first step of the valve's regulation of the fluid. By setting the regulating holes 41, the regulation can be made more precise. Then the valve core 3 continues to move downward until it is sealed. During this process, the regulating plates 4 are in close contact with each other to complete the seal, and the upper and lower regulating plates 4 seal the regulating holes 41. Through the cooperation of the regulating plates 4 and the regulating holes 41, the above structure can regulate the fluid more precisely when cutting off, and the number of regulating plates 4 can be set according to the actual situation.
[0021] The elastic member 5 includes a limiting groove 51 and a reset elastic piece 52. The limiting groove 51 is provided on the sleeve 2. Sliding protrusions 65 are provided at both ends of part of the adjusting plate 4. The sliding protrusions 65 slide in the limiting groove 51, and the reset elastic piece 52 is arranged in the limiting groove 51 and drives the adjusting plate 4 to reset. By providing the reset elastic piece 52 and the sliding protrusions 65, when the valve core 3 moves downward, the adjusting plate 4 can move downward to seal, with a simple structure and convenient use.
[0022] A sealing portion is formed at the bottom of the valve core 3. The sealing portion includes a plurality of moving portions 6, and adjacent moving portions 6 are slidably connected. A sealing member is provided at one end of the moving portion 6 facing the adjusting plate 4. When the actuator controls the valve core 3 to cut off, the moving portion 6 closely adheres to the adjusting plate 4 to form a seal. The provision of the sealing portion and the sealing member enhances the sealing performance of the valve body 1, so that there will be no leakage when the valve body 1 cuts off. At the same time, the moving portions 6 can slide relative to each other, enabling the sealing portion and the adjusting plate 4 to be pressed against each other again for sealing, ensuring the sealing performance of the valve body 1 after cutting off, with better and more reliable sealing.
[0023] The sealing member includes a sealing edge 61 and a sealing ring 62. The sealing edge 61 is provided on the side of the moving portion 6 facing the adjusting plate 4, and the sealing ring 62 is clamped inside the moving portion 6. The simultaneous provision of the sealing edge 61 and the sealing ring 62 enables better sealing, with a practical structure.
[0024] One end of the moving portion 6 is recessed to form a first sliding groove 63 and a second limiting sliding groove 64, and the other end forms a sliding protrusion 65 and a limiting edge 66. The end of the second limiting sliding groove 64 facing away from the first sliding groove 63 communicates with the outside. One end of the sliding protrusion 65 forms a symmetrical driving edge. When the sliding protrusion 65 is located in the first sliding groove 63, a sliding gap 67 is formed between the sliding protrusion 65 and the first sliding groove 63. The sliding gap 67 allows a certain displacement amount between the moving portions 6, enabling better pressing for sealing. At the same time, the provision of the limiting edge 66 can drive the adjacent moving portion 6 to move upward when moving upward. A plurality of through holes are also provided on the valve core; fluid can flow out during the middle stage of cutting off, with a simple and convenient structure, and it is also convenient for the valve body to cut off and open.
[0025] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.
Claims
1. A flow control structure of a regulating valve, comprising a valve body, a flow channel formed in the valve body, a sleeve, a valve core and an actuator are also arranged in the valve body, the actuator is connected to the valve core and slides in the sleeve to adjust and cut off the flow channel, characterized in that: A plurality of adjusting plates are arranged in the valve body, the adjusting plates are fixed at the bottom of the sleeve, slidably arranged on the sleeve, and the adjusting plates are symmetrically arranged on the sleeve. The adjusting plates are fixed at the bottom of the valve core, and an elastic member connected to the adjusting plates is arranged on the sleeve. A plurality of adjusting holes are arranged on the adjusting plate. When the actuator drives the valve core, the valve core drives the plurality of adjusting plates to be close to each other and cut off the flow channel, and the adjacent adjusting plates seal the adjusting holes.
2. A regulating valve flow control structure according to claim 1, characterized in that: The elastic member includes a limiting groove and a reset spring sheet, the limiting groove is arranged on the sleeve, and sliding protrusions are arranged at both ends of some of the adjustment plates. The sliding protrusions slide in the limiting groove and the reset spring sheet is arranged in the limiting groove and drives the adjustment plate to reset.
3. The regulating valve flow control structure according to claim 1 is characterized in that: A sealing part is formed at the bottom of the valve core, and the sealing part includes a plurality of movable parts. Adjacent movable parts are slidingly connected to each other. A sealing member is provided on one end of the movable part facing the regulating plate. When the actuator controls the valve core to be cut off, the movable part is tightly attached to the regulating plate to form a seal.
4. A regulating valve flow control structure according to claim 3, characterized in that: The sealing member comprises a sealing edge and a sealing ring. The sealing edge is arranged on a side of the moving part facing the adjusting plate, and the sealing ring is clamped inside the moving part.
5. A regulating valve flow control structure according to claim 4, characterized in that: One end of the moving part is recessed to form a first sliding groove and a second limiting sliding groove, and the other end is formed with a sliding protrusion and a limiting edge. The end of the second limiting sliding groove facing away from the first sliding groove is connected to the outside world, and a symmetrical driving edge is formed at one end of the sliding protrusion. When the sliding protrusion is located in the first sliding groove, a sliding gap is formed between the sliding protrusion and the first sliding groove.
6. The regulating valve flow control structure according to claim 1, characterized in that: The valve core is also provided with a plurality of through holes.