Flow regulating valve

Abstract

The utility model relates to the technical field of valve bodies, in particular to a flow regulating valve, which comprises a main body and a valve core, the main body is provided with a regulating hole and a plurality of groups of runners, the plurality of groups of runners are arranged at intervals along the axial direction of the regulating hole, and first ends of the runners are communicated to a first inlet and outlet of the flow regulating valve. The second end of the flow channel is communicated to the second inlet and outlet of the flow regulating valve through the regulating hole; the valve element is arranged in the adjusting hole and can move in the axial direction of the adjusting hole, movement of the valve element is used for blocking or opening the flow channel, and therefore the flow of the flow adjusting valve is adjusted. The flow channels are arranged to be multiple sets, the flow can be adjusted more finely, the moving direction of the valve element is the same as the arrangement direction of the flow channels, along with axial movement of the valve element along the adjusting hole, the flow channels at the corresponding positions are blocked or opened, the number of the communicated flow channels is changed, and the purpose of adjusting the flow is achieved. In addition, under the condition that the flow adjusting range is the same, the movement amount of the valve element can be increased, control is simpler, and the control precision can be further improved.

Description

Technical Field

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

[0002] Flow control valves, also known as flow regulating valves, are flow control devices widely used in various fields, primarily for regulating the flow rate of low-concentration liquids. Existing flow control valves have relatively low regulation accuracy, making them unsuitable for flow regulation requiring high precision. Furthermore, fluids are prone to cavitation under conditions of high-speed flow and large pressure changes, making it difficult to meet the valve's lifespan and flow accuracy requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a flow regulating valve that improves the flow regulation accuracy of the valve, reduces the cavitation intensity of the valve, and extends its service life.

[0004] To achieve the above objectives, the technical solution of this utility model includes:

[0005] A flow regulating valve, comprising:

[0006] The main body is provided with an adjustment hole and multiple sets of flow channels. The multiple sets of flow channels are arranged at intervals along the axial direction of the adjustment hole. The first end of the flow channel is connected to the first inlet and outlet of the flow regulating valve, and the second end of the flow channel is connected to the second inlet and outlet of the flow regulating valve through the adjustment hole.

[0007] A valve core is disposed within the regulating hole and is movable along its axial direction. The movement of the valve core is used to block or open the flow channel, thereby regulating the flow rate of the flow regulating valve.

[0008] In one embodiment, the main body includes a plurality of valve plates, which are arranged at intervals along the axial direction of the adjustment hole. Each valve plate is provided with a set of flow channels and a through hole, which are assembled to form the adjustment hole.

[0009] In one embodiment, the flow channel is a groove provided on one end face of the valve plate.

[0010] In one embodiment, any group of the flow channels includes multiple branch channels, which are distributed circumferentially along the regulating orifice.

[0011] In one embodiment, any group of the flow channels includes at least one branch flow channel, the branch flow channel having a Tesla flow channel structure.

[0012] In one embodiment, the first end of the Tesla flow channel is located on the outside of the body and connects to the first inlet and outlet of the flow regulating valve, and the second end of the Tesla flow channel is located on the inside of the body and connects to the second inlet and outlet of the flow regulating valve. The Tesla flow channel has multiple semi-annular channels facing its first end, and its energy gradually decreases as the liquid flows from the first end of the Tesla flow channel to its second end.

[0013] In one embodiment, the first entrance / exit forms an entrance and the second entrance / exit forms an exit; or, the first entrance / exit forms an exit and the second entrance / exit forms an entrance.

[0014] In one embodiment, the system further includes a housing having a mounting cavity and a first inlet and a second inlet connected to the mounting cavity, the main body being disposed in the mounting cavity such that the first inlet and the second inlet can only form liquid communication via the flow channel.

[0015] In one embodiment, the main body is a hollow cylindrical structure with an adjustment hole at the center. The two axial ends of the main body are sealed to the mounting cavity. The first inlet and outlet are located on the radial side of the main body, and the second inlet and outlet are located at one end of the axial direction of the main body. The flow channel connects the outer wall of the main body and the adjustment hole, so that the first inlet and outlet and the second inlet and outlet can only form liquid communication through the flow channel.

[0016] In one embodiment, the valve core is connected to a drive member for driving the valve core to translate axially along the adjustment hole.

[0017] The beneficial effects of this utility model are:

[0018] 1. The main body has multiple sets of flow channels, which are distributed along the axis of the regulating hole. As the valve core moves along the axis of the regulating hole, the flow channels at the corresponding positions are blocked or opened, changing the number of open flow channels to achieve the purpose of regulating the flow rate. This utility model sets the flow channels in multiple sets, which can more precisely regulate the flow rate. Moreover, the valve core moving direction is the same as the flow channel arrangement direction. Under the same flow rate regulation range, the valve core movement can be increased, making the control simpler and helping to further improve the control accuracy.

[0019] 2. The Tesla flow channel is adopted, which can adapt to different pressure and flow conditions and adjust the flow direction of liquid in the Tesla flow channel, thereby reducing valve cavitation intensity and extending service life. Attached Figure Description

[0020] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0021] Figure 2This is one of the front views of an embodiment of the present utility model.

[0022] Figure 3 This is another front view of an embodiment of the present utility model.

[0023] Figure 4 yes Figure 3 AA sectional view.

[0024] Figure 5 This is a perspective view of the main body of an embodiment of this utility model.

[0025] Figure 6 This is a schematic diagram of the liquid flowing from the first end to the second end of the Tesla channel according to an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the liquid flowing from the second end to the first end of the Tesla channel according to an embodiment of the present invention. Detailed Implementation

[0027] 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.

[0028] See Figures 1 to 6 As shown, this utility model discloses a flow regulating valve, including a housing 1, a main body 2, and a valve core 3.

[0029] The housing 1 has a mounting cavity 100 and a first inlet / outlet 101 and a second inlet / outlet 102 connected to the mounting cavity. The main body 2 is disposed in the mounting cavity 100. The main body 2 is a hollow cylindrical structure with an adjustment hole 21 at its center. Multiple sets of flow channels 22 are provided on the radially outer side of the adjustment hole 21. The flow channels 22 connect the outer side wall of the main body 1 and the adjustment hole 21. The two axial ends of the main body 2 are sealed to the mounting cavity 100. More specifically, one end of the main body 2 is sealed to the mounting cavity 100 through a base. The first inlet / outlet 101 is located on the radially outer side of the main body, and the second inlet / outlet 102 is located at one axial end of the main body. The multiple sets of flow channels 22 are arranged at intervals along the axial direction of the adjustment hole 21. The first end of the flow channel 22 is connected to the first inlet / outlet 101 of the flow regulating valve, and the second end of the flow channel 22 is connected to the second inlet / outlet 102 of the flow regulating valve through the adjustment hole 21. Thus, the first inlet / outlet 101 and the second inlet / outlet 102 can only form liquid communication through the flow channels 22.

[0030] In other embodiments, it is also feasible to set the first inlet / outlet 101 in the axial direction of the main body 2, but attention should be paid to the adjustment hole 21 that is off-center from the center of the main body 2. For example, the first inlet / outlet 101 corresponds to the end face of the main body 2, and each set of flow channels 22 is axially connected so that the first end of each set of flow channels 22 can be connected to the first inlet / outlet 101.

[0031] The valve core 3 is disposed within the regulating hole 21 and can move axially therein. The valve core 3 is connected to a driving component (not shown in the figure), which drives the valve core 3 to translate axially along the regulating hole 21. The movement of the valve core 3 is used to block or open the flow channel 22, thereby regulating the flow rate of the flow regulating valve. As the valve core 3 moves, each set of flow channels 22 may be blocked or opened. As the number of blocked flow channels 22 increases, the liquid diameter between the first inlet / outlet 101 and the second inlet / outlet 102 decreases, and the flow rate of the flow regulating valve is reduced. Conversely, if the number of blocked flow channels 22 decreases, the liquid diameter between the first inlet / outlet 101 and the second inlet / outlet 102 increases, and the flow rate of the flow regulating valve is increased, thereby achieving the purpose of regulating the flow rate.

[0032] In this embodiment, the valve core 3 moves axially by translating within the adjustment hole 21. In other embodiments, the valve core 3 can also move axially by rotating within the adjustment hole 21, in which case the valve core 3 can move helically.

[0033] This invention sets multiple flow channels between the first inlet / outlet 101 and the second inlet / outlet 102. Compared to the prior art which only has one flow channel, this method of dividing the flow channels is beneficial for adjusting the flow rate by using the cross-sectional area of ​​each flow channel as a unit, making the flow rate adjustment more precise and thus improving the adjustment accuracy of the flow regulating valve. Secondly, this invention sets each flow channel 22 to be arranged axially along the regulating hole 21, while the valve core 3 moves axially along the regulating hole 21. Therefore, the arrangement direction of each flow channel 22 is consistent with the movement direction of the valve core 3. As the valve core 3 moves, the number of flow channels 22 that are blocked or opened can be increased sequentially, changing the number of flow channels 22 for liquid flow and thus adjusting the flow rate. This method of aligning the arrangement direction of the flow channels 22 with the movement direction of the valve core 3 weakens the impact of the valve core 3's movement on the flow rate change. Furthermore, there is a certain distance between adjacent flow channels 22. Under the same flow rate adjustment range, the valve core 3 has a longer movement stroke, which is more conducive to fine control of flow rate changes and thus improves the accuracy of flow rate adjustment.

[0034] It should be noted that the valve core 3 is not limited to completely blocking or opening any group of flow channels 22. It can also partially block or partially open the flow channels 22, and there is no limit to the ratio of blocking to opening. That is, for a single group of flow channels 22, the valve core 3 can also adjust the flow rate of that group of flow channels 22 by moving it.

[0035] The main body 2 of this embodiment includes multiple valve plates 20, which are spaced apart along the axial direction of the adjustment hole 21. Each valve plate 20 has a set of flow channels 22 and a through hole 201. The through holes 201 are assembled to form the adjustment hole 21. In this embodiment, the main body 2 is formed by stacking multiple valve plates 20, and a groove is provided on the end face of each valve plate 20 to form a set of flow channels 22. This simplifies the processing of the flow channels 22 and allows the flow channels 22 to be set into complex structures, such as the Tesla flow channel structure described below. In other embodiments, the main body 2 can also be an integral structure, and the flow channels 22 can be formed by holes provided inside the main body 2. Correspondingly, each set of flow channels 22 can also be formed by holes provided inside each valve plate 20.

[0036] Each set of flow channels 22 includes multiple branch channels 202, which are distributed circumferentially along the regulating hole 21. Specifically, the groove on the end face of the valve plate 20 forms the branch channel 202. In this embodiment, each set of flow channels 22 includes four branch channels 202. In other embodiments, a set of flow channels 22 may have only one branch channel, or other numbers of branch channels 202. Dividing each set of flow channels 22 into multiple branch channels makes the flow velocity in each set of flow channels 22 more gradual and reduces the cross-sectional area of ​​each branch channel 202, ensuring the strength of each valve plate 20. In this embodiment, there is a large space between the main body 2 and the mounting cavity 100, which is beneficial for the liquid to flow from each branch channel 202 to the regulating hole 21.

[0037] In this embodiment, the structure of the flow channel 202 is a Tesla flow channel. In other embodiments, it can also be other structures, such as a straight structure extending radially along the adjustment hole 21.

[0038] The first end of the Tesla flow channel is located on the outside of the main body 2 and connects to the first inlet / outlet 101 of the flow regulating valve. The second end of the Tesla flow channel is located on the inside of the main body 1 and connects to the second inlet / outlet 102 of the flow regulating valve. The Tesla flow channel has multiple semi-annular channels facing its first end. As the liquid flows from the first end to the second end of the Tesla flow channel, its energy gradually decreases. Because the Tesla flow channel has semi-annular channels, see [reference needed]. Figure 6As shown, when liquid flows from the first end to the second end of the Tesla channel, part of the liquid enters the semi-annular channel, and the other part enters the straight channel. When the liquid in the semi-annular channel flows out, it collides with the liquid in the straight channel, resulting in energy dissipation, i.e., reducing the liquid's energy, thereby gradually reducing the fluid pressure and slowing down the liquid velocity within the Tesla channel. Conversely, see [reference needed]. Figure 7 As shown, when liquid flows from the second end to the first end of the Tesla channel, because the direction of the inlet side of the semi-annular channel is different from the direction of liquid flow, only a small portion or no liquid enters the semi-annular channel, while most or all of the liquid enters the straight channel. Therefore, the liquid in the semi-annular channel has minimal impact on the liquid in the straight channel, resulting in the liquid pressure in the Tesla channel remaining approximately constant. Thus, the flow regulating valve in this embodiment also has the function of reducing pressure and flow rate, adapting to different pressure and flow conditions. Depending on the application requirements, the liquid flow direction can be changed to meet the specific needs. Specifically: When the flow control valve is in a low differential pressure condition, the first inlet / outlet 101 serves as the inlet of the flow control valve, and the second inlet / outlet 102 serves as the outlet of the flow control valve. At this time, the liquid flows from the second end of the Tesla flow channel to its first end, and no cavitation occurs or the cavitation intensity is low inside the flow channel. The flow rate can be adjusted by moving the valve core 3. When the flow control valve is in a high differential pressure condition, the first inlet / outlet 101 serves as the outlet of the flow control valve, and the second inlet / outlet 102 serves as the inlet of the flow control valve. At this time, the liquid flows from the first end of the Tesla flow channel to its second end, and the liquid pressure decreases step by step. Not only can the flow rate be adjusted by moving the valve core 3, but the cavitation intensity can also be reduced.

[0039] The low differential pressure condition and the high differential pressure condition are determined based on the type of liquid and the specific pressure at the valve inlet and outlet. In actual operation, the inlet and outlet of the flow control valve are generally adjusted based on whether cavitation will occur, thereby adjusting the flow direction of the liquid in the Tesla channel.

[0040] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that the remaining undescribed parts are prior art, and that all changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A flow regulating valve, characterized in that: include: The main body is provided with an adjustment hole and multiple sets of flow channels. The multiple sets of flow channels are arranged at intervals along the axial direction of the adjustment hole. The first end of the flow channel is connected to the first inlet and outlet of the flow regulating valve, and the second end of the flow channel is connected to the second inlet and outlet of the flow regulating valve through the adjustment hole. A valve core is disposed within the regulating hole and is movable along its axial direction. The movement of the valve core is used to block or open the flow channel, thereby regulating the flow rate of the flow regulating valve.

2. The flow regulating valve according to claim 1, characterized in that: The main body includes multiple valve plates, which are arranged at intervals along the axial direction of the adjustment hole. Each valve plate has a set of flow channels and a through hole. The through holes are assembled to form the adjustment hole.

3. A flow regulating valve according to claim 2, characterized in that: The flow channel is a groove provided on one end face of the valve plate.

4. A flow regulating valve according to claim 1, characterized in that: Each set of flow channels includes multiple branch channels, which are distributed circumferentially along the regulating hole.

5. A flow regulating valve according to claim 1, characterized in that: Each group of flow channels includes at least one branch flow channel, and the branch flow channel has a Tesla flow channel structure.

6. A flow regulating valve according to claim 5, characterized in that: The first end of the Tesla flow channel is located on the outside of the main body and connects to the first inlet and outlet of the flow regulating valve. The second end of the Tesla flow channel is located on the inside of the main body and connects to the second inlet and outlet of the flow regulating valve. The Tesla flow channel has multiple semi-annular channels facing its first end. When the liquid flows from the first end of the Tesla flow channel to its second end, its energy gradually decreases.

7. A flow regulating valve according to claim 6, characterized in that: The first entrance / exit forms an entrance, and the second entrance / exit forms an exit; or, the first entrance / exit forms an exit, and the second entrance / exit forms an entrance.

8. A flow regulating valve according to claim 1, characterized in that: It also includes a housing, which has a mounting cavity and a first inlet and a second inlet connected to the mounting cavity. The main body is disposed in the mounting cavity, such that the first inlet and the second inlet can only form liquid communication through the flow channel.

9. A flow regulating valve according to claim 8, characterized in that: The main body is a hollow cylindrical structure with an adjustment hole in the center. The two axial ends of the main body are sealed to the mounting cavity. The first inlet and outlet are located on the radial side of the main body, and the second inlet and outlet are located at one end of the axial direction of the main body. The flow channel connects the outer wall of the main body and the adjustment hole, so that the first inlet and outlet and the second inlet and outlet can only form liquid communication through the flow channel.

10. A flow regulating valve according to claim 1, characterized in that: The valve core is connected to a driving member, which is used to drive the valve core to translate axially along the adjusting hole.

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