Flow regulating valve

Abstract

The utility model discloses a flow regulating valve, and relates to the technical field of flow valves. The flow regulating valve comprises a valve body, a sleeve and a valve element, a liquid inlet and a liquid outlet are formed in the valve body, and a liquid inlet cavity communicated with the liquid inlet is formed in the valve body; the sleeve is fixedly arranged in the liquid inlet cavity, the sleeve is provided with an inner cavity communicated with the liquid outlet, and a first through hole communicated with the liquid inlet cavity and the inner cavity is formed in the sleeve; one end of the valve element is movably installed in the inner cavity of the sleeve, the other end of the valve element extends out of the valve body, a second through hole capable of being communicated with the first through hole is formed in the valve element, and the second through hole is communicated with the inner cavity of the sleeve. The valve element is driven to move to change the cross section area of a channel communicated with the first through hole and the second through hole, so that the flow is adjusted, the structure is simple, the cost is low, and the reliability is high.

Description

Technical Field

[0001] This utility model relates to the technical field of flow valves, specifically to a flow regulating valve. Background Technology

[0002] In the chemical industry, the precise flow control of liquids often requires control valves. Commercially available flow control valves that can accurately control flow changes are generally complex in structure and expensive. Furthermore, due to their numerous internal components and complex structure, they often suffer from shorter service life and lower product reliability. Therefore, there is an urgent need to design a flow control valve with a simple structure that can precisely control flow changes. Utility Model Content

[0003] Therefore, to solve the above problems, this utility model provides a flow regulating valve.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model provides a flow regulating valve, including a valve body, a sleeve, and a valve core. The valve body has an inlet and an outlet, and the valve body has an inlet cavity communicating with the inlet. The sleeve is fixedly disposed in the inlet cavity and has an inner cavity communicating with the outlet. The sleeve has a first through hole communicating with the inlet cavity and the inner cavity. One end of the valve core is movably installed in the inner cavity of the sleeve, and the other end extends out of the valve body. The valve core has a second through hole communicating with the first through hole and the inner cavity of the sleeve. The cross-sectional area of ​​the channel through which the first through hole and the second through hole communicate with each other changes size with the movement of the valve core, thereby regulating the flow rate of liquid flowing out of the outlet.

[0006] Optionally, one end of the valve core extending out of the valve body can be connected to an external drive mechanism. Under the drive of the external drive mechanism, the valve core can move along the sleeve axial direction, thereby increasing or decreasing the cross-sectional area of ​​the channel through which the first through hole and the second through hole communicate with each other.

[0007] Optionally, along the axial direction of the sleeve, one of the first through hole and the second through hole gradually narrows.

[0008] Optionally, the first through hole has a strip-shaped hole structure and its length direction is arranged along the circumference of the sleeve; along the valve core axis, one end of the second through hole gradually narrows to the other end.

[0009] Optionally, the cross-section of the second through hole has a trapezoidal hole structure or a triangular hole structure.

[0010] Optionally, the valve core includes a drive part and a plunger part. One end of the drive part extends out of the valve body, and the other end is connected to the plunger part. The circumferential outer wall of the plunger part is sealed against the inner wall of the sleeve, thereby dividing the inner cavity of the sleeve into an outlet cavity and a compensation cavity by the plunger part. The second through hole is opened on the plunger part and communicates with the outlet cavity, and the outlet cavity communicates with the outlet port. The side wall of the sleeve is provided with a compensation port, and the compensation port communicates with the inlet cavity and the compensation cavity.

[0011] Optionally, the plunger portion is provided with a groove facing the liquid outlet, and the second through hole is opened on the circumferential groove wall of the groove.

[0012] Optionally, sealing rings are installed at intervals on the outer wall of the plunger portion along the axial direction of the plunger portion.

[0013] Optionally, the compensation ports are arranged at intervals along the circumference of the sleeve.

[0014] Optionally, the valve body is equipped with a valve cover, an end cover, and a seal; the valve cover is sealed and installed on the side of the sleeve away from the liquid outlet, the end cover is sealed and installed on one end of the valve body and covers and seals the valve cover, the seal is disposed between the valve cover and the end cover, and one end of the valve core passes through the valve cover, the seal, and the end cover in sequence.

[0015] The technical solution provided by this utility model has the following beneficial effects: a first through hole is provided on the sleeve and a second through hole is provided on the valve core. By moving the valve core, the cross-sectional area of ​​the channel through which the first through hole and the second through hole are connected is changed, thereby achieving the purpose of more precise flow control. Furthermore, the flow valve has a simple overall structure, low cost, and high reliability. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of this embodiment;

[0017] Figure 2 This is a cross-sectional view of this embodiment;

[0018] Figure 3 This is an exploded view of the valve core and sleeve in this embodiment.

[0019] Explanation of reference numerals in the attached drawings: 1. Valve body; 11. Liquid inlet; 12. Liquid outlet; 13. Liquid inlet chamber; 2. Sleeve; 21. First through hole; 22. Liquid outlet chamber; 23. Compensation chamber; 24. Compensation port; 3. Valve core; 31. Second through hole; 32. Drive unit; 33. Plunger unit; 331. Groove; 332. Annular groove; 333. Sealing ring; 4. Valve cover; 5. End cover; 6. Seal. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0022] Reference Figure 1-3 This embodiment provides a flow regulating valve, including a valve body 1, a sleeve 2, and a valve core 3. The valve body 1 has an inlet 11 and an outlet 12, and an inlet chamber 13 communicating with the inlet 11. The sleeve 2 is fixedly installed in the inlet chamber 13 and has an inner cavity that communicates with the outlet 12 of the valve body 1. The sleeve 2 has a first through hole 21 for connecting the inlet chamber 13 and the inner cavity. One end of the valve core 3 is movably disposed in the inner cavity of the sleeve 2, and the other end extends out of the valve body 1 and can be connected to an external drive mechanism, so that one end of the valve core 3 can move within the sleeve 2 under the action of external force. The valve core 3 has a second through hole 31 that communicates with the first through hole 21 and communicates with the inner cavity of the sleeve 2. The cross-sectional area of ​​the channel through which the first through hole 21 and the second through hole 31 intersect changes with the movement of the valve core 3, thereby enabling more precise regulation of the flow rate of liquid flowing out of the outlet 12; and the entire flow valve has a simple internal structure, low cost, and high reliability.

[0023] Specifically, in this embodiment, the end of the valve core 3 extending outside the valve body 1 is driven by an external drive mechanism, allowing the valve core 3 to move axially along the sleeve 2, thereby increasing or decreasing the cross-sectional area of ​​the channel connecting the first through hole 21 and the second through hole 31. In other embodiments, the valve core 3 can also rotate along its own axial direction to change the size of the cross-sectional area of ​​the channel connecting the first through hole 21 and the second through hole 31. In practical design, different movement modes of the valve core 3 can be adopted according to the different shapes and structures of the valve body and the working environment.

[0024] Furthermore, along the axial direction of sleeve 2, one of the first through hole 21 and the second through hole 31 gradually narrows. In this embodiment, the first through hole 21 has a strip-shaped hole structure, and its length direction is arranged circumferentially along sleeve 2. Along the axial direction of valve core 3, the second through hole 31 gradually narrows from one end to the other. Compared to using the same hole structure for the first through hole 21 and the second through hole 31, this arrangement facilitates the adjustment and control of flow rate. In other embodiments, the hole structures of the first through hole 21 and the second through hole 31 can also be interchanged, which can also achieve the effect of changing the cross-sectional area of ​​the channels.

[0025] like Figure 3 The cross-section of the second through hole 31 is a trapezoidal or triangular hole structure. With this design, the flow rate can be linearly controlled during the movement of the valve core 3, thereby achieving precise flow control.

[0026] Furthermore, the valve core 3 includes a drive section 32 and a plunger section 33. The drive section 32 has a cylindrical structure, with one end extending out of the valve body 1 and the other end fixedly connected to the plunger section 33. The outer circumferential wall of the plunger section 33 is sealed against the inner wall of the sleeve 2, thereby dividing the inner cavity of the sleeve 2 into an outlet chamber 22 and a compensation chamber 23. A compensation port 24 communicating with the compensation chamber 23 is provided on the side wall of the sleeve 2, and the compensation port 24 is connected to the inlet chamber 13. A second through hole 31 is located on the plunger section 33 and communicates with the outlet chamber 22, which is connected to the outlet port 12. Through the compensation port 24, liquid flows between the inlet chamber 13 and the compensation chamber 23, thereby enabling the valve core 3 to move smoothly along the axial direction of the sleeve 2. Two compensation ports 24 are symmetrically arranged, allowing the liquid to flow relatively evenly and quickly between the inlet chamber 13 and the compensation chamber 23, ensuring the smooth operation of the valve core 3.

[0027] Specifically, the plunger portion 33 is provided with a groove 331 with its opening facing the liquid outlet 12. A second through hole 31 is formed on the circumferential groove wall of the groove 331, thereby enabling communication between the second through hole 31 and the liquid outlet chamber 22. The outer wall of the plunger portion 33 is provided with annular grooves 332 spaced apart along the axial direction. A sealing ring 333 is installed in the annular groove 332 to ensure that the outer wall of the plunger portion 33 and the cavity wall of the sleeve 2 are in close contact and sealed during the movement of the plunger portion 33.

[0028] The valve body 1 is also equipped with a valve cover 4, an end cap 5, and a seal 6. The valve cover 4 is sealed and installed at the end of the sleeve 2 opposite to the outlet 12, forming an inlet chamber 13 with the valve body 1, and forming a compensation chamber 23 with the sleeve 2 and the valve core 3. The end cap 5 is detachably fixedly installed at the end of the valve body 1, covering and sealing the valve cover 4, thus allowing the end cap 5 to be removed for easy replacement or maintenance of the valve core 3. The seal 6 is installed between the valve cover 4 and the end cap 5 via an annular mounting block. The seal 6 is a plug seal, a high-performance sealing accessory with a U-shaped Teflon core and a special spring inside. The drive part 32 of the valve core 3 passes through the valve cover 4, the plug seal, and the end cap 5 in sequence. During the movement of the drive part 32 of the valve core 3, the plug seal can maintain a stable seal with the drive part 32, preventing liquid leakage.

[0029] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A flow regulating valve characterized by: The valve comprises a valve body, a sleeve and a valve core. The valve body is provided with an inlet and an outlet. The valve body has an inlet cavity communicating with the inlet. The sleeve is fixedly arranged in the inlet cavity. The sleeve has an inner cavity communicating with the outlet. The sleeve is provided with a first through hole communicating the inlet cavity with the inner cavity. The valve core is movably arranged in the inner cavity of the sleeve with one end extending out of the valve body. The valve core is provided with a second through hole communicating with the first through hole and the inner cavity of the sleeve. The cross-sectional area of the channel through the first through hole and the second through hole changes with the movement of the valve core, thereby adjusting the flow rate of the liquid flowing out of the outlet.

2. A flow regulating valve according to claim 1, wherein: The end of the valve core extending out of the valve body is connected with an external driving mechanism. Under the driving of the external driving mechanism, the valve core can move axially along the sleeve, thereby changing the cross-sectional area of the channel through the first through hole and the second through hole.

3. A flow regulating valve according to claim 2, wherein: One of the first through hole and the second through hole gradually narrows along the axial direction of the sleeve.

4. A flow regulating valve according to claim 3, wherein: The first through hole is a strip-shaped hole with its length direction arranged along the circumference of the sleeve. The second through hole gradually narrows from one end to the other end along the axial direction of the valve core.

5. A flow regulating valve according to claim 4, wherein: The cross section of the second through hole is in the shape of a trapezoidal hole or a triangular hole.

6. The flow regulating valve of claim 2, wherein: The valve core comprises a driving part and a plunger part. One end of the driving part extends out of the valve body, and the other end is connected with the plunger part. The circumferential outer wall of the plunger part is sealingly attached to the inner wall of the sleeve, thereby separating the inner cavity of the sleeve into an outlet cavity and a compensation cavity. The second through hole is arranged on the plunger part and communicates with the outlet cavity. The outlet cavity communicates with the outlet. The side wall of the sleeve is provided with a compensation port communicating the inlet cavity with the compensation cavity.

7. A flow regulating valve according to claim 6 wherein: The plunger part is provided with a groove body with a notch facing the outlet. The second through hole is arranged on the circumferential groove wall of the groove body.

8. The flow regulating valve of claim 6, wherein: Along the axial direction of the plunger part, the outer wall of the plunger part is provided with a sealing ring.

9. The flow regulating valve of claim 6, wherein: The compensation port is arranged along the circumference of the sleeve.

10. The flow regulating valve of claim 1, wherein: The valve body is provided with a valve cover, an end cover and a sealing member. The valve cover is sealingly arranged on the side of the sleeve away from the outlet. The end cover is sealingly arranged on one end of the valve body and covers the valve cover. The sealing member is arranged between the valve cover and the end cover. One end of the valve core passes through the valve cover, the sealing member and the end cover in sequence.

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