By-pass valve with liquid phase vibration damping function

Abstract

The utility model discloses a bypass valve with liquid phase anti -vibration function, including valve main part, and the liquid inlet and liquid outlet are set respectively on valve main part, and the valve core for controlling the bypass valve opening and closing state between liquid inlet and liquid outlet, be equipped with piston piece in valve main part, be equipped with compression spring between piston piece and valve core, be equipped with the screw rod of screw connection with its on valve main part, and the end of screw rod leans on piston piece, be equipped with a plurality of circumferentially even distribution's partition strip on the outer wall of valve core, and the inner wall of valve main part is adjacent to the setting of partition strip, be equipped with the pressure relief hole of axial penetration on valve core. The utility model sets up a plurality of partition strips on the valve core, and the valve core is positioned through the partition strip, avoids the more contact of valve core and valve main part, and the pressure is balanced through the setting pressure relief hole, and the bypass valve is avoided frequently opening and closing.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a bypass valve with liquid phase anti-vibration function. Background Technology

[0002] In existing liquid phase bypass structures, the main components include a valve body, a sealing valve core, and a pressure spring. When liquid flows through, the pressure on the inlet side will be greater than the pressure on the outlet side. The pressure difference within the cavity causes the pressure block to lift, thus achieving the function of diverting and bypassing the flow. When the liquid flow rate is at a critical state, the valve core will also be at a critical state of opening and closing. A patent document with publication number CN115289256B discloses a vibration-damping safety valve to prevent valve core displacement, including a valve body, a valve sleeve, and a valve core. The valve body has an internal lubrication mechanism for lubricating the valve core, including a transmission component, an oil storage chamber, lubricating oil, a spring, a pressure plate, a drain pipe, an oil injection cotton block, and an oil outlet. The valve body also has an internal transmission component that provides power for oil injection. An oil storage chamber is formed on the inner side of the valve body, filled with lubricating oil. A spring is fixedly connected to the top of the oil storage chamber, and a pressure plate is fixedly connected to the bottom of the spring. Existing valves experience friction between the valve core and the inner circumference of the valve body when open; when closed, the valve core rubs against the circumference of the valve body, and the contact between the valve core and the valve body produces an impact sound. Frequent opening and closing generates significant noise, severely impacting normal operation and significantly reducing the lifespan of components. Therefore, a bypass valve with liquid-phase vibration damping function is needed to overcome these difficulties. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing a bypass valve with liquid phase anti-vibration function. The invention features several spacers on the valve core to limit the valve core's movement and prevent excessive contact between the valve core and the valve body. Pressure is balanced by setting a pressure relief hole to prevent frequent opening and closing of the bypass valve.

[0004] The objective of this invention is achieved through the following technical solution: a bypass valve with liquid phase vibration damping function, comprising a valve body, an inlet and an outlet respectively provided on the valve body; a valve core between the inlet and outlet for controlling the opening and closing state of the bypass valve; a piston component inside the valve body, and a compression spring between the piston component and the valve core; a screw threadedly connected to the valve body, the end of the screw abutting against the piston component; a plurality of circumferentially evenly distributed spacers on the outer wall of the valve core, the spacers being adjacent to the inner wall of the valve body; and a pressure relief hole penetrating axially on the valve core.

[0005] Preferably, a first sealing element is provided between the piston and the valve body, and the first sealing element is stuck in the groove of the piston; the valve core is a columnar body, and a centering protrusion is provided at the end of the valve core facing the piston; the compression spring is disposed between the centering protrusion and the piston.

[0006] Preferably, the core-stabilizing protrusion is a columnar body, and the outer diameter of the compression spring is compatible with the outer diameter of the core-stabilizing protrusion; the end of the compression spring is sleeved and installed on the core-stabilizing protrusion; the outer diameter of the compression spring is also compatible with the inner diameter of the valve body.

[0007] Preferably, the valve core is further provided with a hollow channel, which is connected to the pressure relief hole; the pressure relief hole is located near the top of the valve core, and the inner diameter of the pressure relief hole is smaller than the inner diameter of the hollow channel.

[0008] Preferably, a sealing cone surface is provided at the bottom of the valve core, and in the default state, the sealing cone surface abuts against the inner wall of the valve body; the outer contour of the sealing cone surface is adapted to the inner wall contour of the valve body.

[0009] Preferably, the valve core is a cylindrical body, and the outer wall of the valve core is provided with a number of circumferentially evenly distributed spacers; the spacers are disposed between the valve core and the inner wall of the valve body; the number of spacers is greater than or equal to three.

[0010] Preferably, the spacer is arranged adjacent to the sealing cone surface; the valve body has an annular step, and the spacer abuts against the annular step in the default state; the outer contour of the spacer is adapted to the outer contour of the annular step.

[0011] Preferably, the valve body includes an upper valve body and a lower valve body, and a plurality of screws are provided between the upper valve body and the lower valve body to fix the two; a second sealing element for sealing is also provided between the upper valve body and the lower valve body.

[0012] Preferably, the valve core is made of a rigid material and is integrally molded from bakelite.

[0013] Preferably, the valve core is made of a rigid material and is integrally molded from steel and plastic; an insert body is embedded in the sealing surface of the valve core.

[0014] By incorporating a screw, the vertical distance between the piston and the valve core can be easily adjusted, thus facilitating the adjustment of the spring constant. The spring constant is related to the pressure difference within the valve body, allowing for adaptation to adjust the pressure value when the bypass valve is open. A centering protrusion limits the compression spring, ensuring its force is stably transmitted to the valve core, enabling stable control of the bypass valve's opening and closing. A spacer restricts the valve core axially, allowing it to move only along the valve body's axis. The spacer also prevents excessive contact between the valve core and body, reducing vibration from friction. When the flow rate within the valve body is low, liquid can enter and exit through the pressure relief hole, maintaining pressure balance between the inlet and outlet sides, thus preventing frequent valve opening and closing and reducing noise. A sealing cone surface at the bottom of the valve core increases the contact area between the valve core and the valve body's inner wall, mitigating noise from vertical impacts. The valve core is made of bakelite, which reduces abnormal vibrations caused by rigid impacts between steel bodies, thereby achieving the purpose of vibration reduction and noise reduction.

[0015] Compared with the prior art, this utility model has the following beneficial effects: 1. By setting a spacer, the valve core is axially limited, so that the valve core can only move along the axial direction of the valve body; at the same time, the spacer is set between the valve body and the valve core, thus avoiding more contact between the valve core and the valve body and reducing vibration caused by contact friction. 2. By setting a pressure relief hole to balance the pressure, the pressure balance between the inlet and outlet sides can be maintained, thereby avoiding frequent opening and closing of the valve core and reducing noise generation. 3. A sealing cone surface is set at the bottom of the valve core, increasing the contact area between the valve core and the inner wall of the valve body, thereby reducing the noise caused by vertical impact. 4. The valve core is made of bakelite, reducing abnormal vibration caused by rigid impact between steel bodies, thereby achieving the purpose of vibration reduction and noise reduction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a diagram of the internal structure of the present invention;

[0018] Figure 3 for Figure 2 A schematic diagram of the valve core structure when cut open from point AA;

[0019] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0020] The markings in the diagram are: 1. Valve body; 2. Inlet; 3. Outlet; 4. Valve core; 5. Piston; 6. Compression spring; 7. Screw; 8. Spacer; 9. Pressure relief hole; 10. First seal; 11. Core protrusion; 12. Hollow channel; 13. Sealing cone surface; 14. Annular step; 15. Upper valve body; 16. Lower valve body; 17. Screw; 18. Second seal; 19. Inlay body. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0022] like Figures 1 to 4 As shown, this embodiment discloses a bypass valve with liquid phase vibration damping function, including a valve body 1, with an inlet 2 and an outlet 3 respectively provided on the valve body 1; a valve core 4 between the inlet 2 and the outlet 3 for controlling the opening and closing state of the bypass valve; a piston 5 is provided inside the valve body 1, and a compression spring 6 is provided between the piston 5 and the valve core 4; a screw 7 is provided on the valve body 1 and threadedly connected thereto, with the end of the screw 7 abutting against the piston 5; a plurality of circumferentially evenly distributed spacers 8 are provided on the outer wall of the valve core 4, and the spacers 8 are arranged adjacent to the inner wall of the valve body 1; a pressure relief hole 9 is provided on the valve core 4 and penetrates through it axially.

[0023] A first sealing element 10 is provided between the piston 5 and the valve body 1, and the first sealing element 10 is engaged in the groove of the piston 5; the valve core 4 is a cylindrical body, and a centering protrusion 11 is provided at the end of the valve core 4 facing the piston 5; the compression spring 6 is disposed between the centering protrusion 11 and the piston 5. The centering protrusion 11 is a cylindrical body, and the outer diameter of the compression spring 6 is adapted to the outer diameter of the centering protrusion 11; the end of the compression spring 6 is sleeved on the centering protrusion 11; the outer diameter of the compression spring 6 is also adapted to the inner diameter of the valve body 1.

[0024] The valve core 4 also has a hollow channel 12, which communicates with the pressure relief hole 9. The pressure relief hole 9 is located near the top of the valve core 4, and its inner diameter is smaller than that of the hollow channel 12. A sealing cone surface 13 is provided at the bottom of the valve core 4. In the default state, the sealing cone surface 13 abuts against the inner wall of the valve body 1. The outer contour of the sealing cone surface 13 matches the inner wall contour of the valve body 1. The valve core 4 is a cylindrical body, and several circumferentially evenly distributed spacers 8 are provided around its outer wall. The spacers 8 are located between the valve core 4 and the inner wall of the valve body 1. The number of spacers 8 is greater than or equal to three. The spacers 8 are adjacent to the sealing cone surface 13. An annular step 14 is provided inside the valve body 1. In the default state, the spacers 8 abut against the annular step 14. The outer contour of the spacers 8 matches the outer contour of the annular step 14. The valve body 1 includes an upper valve body 15 and a lower valve body 16, with several screws 17 for fixing the upper valve body 15 and the lower valve body 16 between them; a second sealing element 18 for sealing is also provided between the upper valve body 15 and the lower valve body 16. The valve core 4 is made of rigid material and is integrally molded from bakelite. The valve core 4 is made of rigid material and is integrally molded from steel and plastic; an insert body 19 is embedded in the sealing surface of the valve core 4.

[0025] The specific operation process of this embodiment is as follows: When the flow rate in the valve body 1 is small, the liquid enters the pressure relief hole 9 from the inlet 2 and then flows from the pressure relief hole 9 to the outlet 3, thereby avoiding frequent opening and closing of the valve core 4. When the flow rate in the valve body 1 is large, a pressure difference is generated between the inlet 2 and the outlet 3. The water pressure overcomes the elastic force of the compression spring 6, thereby causing the valve core 4 to move relative to the valve body 1, and the bypass valve is in the open state; when the water pressure decreases, the bypass valve automatically closes.

[0026] By setting screw 7, the vertical distance between piston 5 and valve core 4 can be easily adjusted, thereby facilitating the adjustment of the elastic coefficient of compression spring 6. The elastic coefficient of compression spring 6 is related to the internal pressure difference of valve body 1, thus adapting to the pressure value when the bypass valve is opened. By setting core protrusion 11, compression spring 6 is limited, so that the elastic force of compression spring 6 can be stably transmitted to valve core 4, thereby enabling valve core 4 to stably control the opening and closing of bypass valve. By setting spacer 8, valve core 4 is axially limited, so that valve core 4 can only move along the axial direction of valve body 1; at the same time, spacer 8 is set between valve body 1 and valve core 4, thus avoiding more contact between valve core 4 and valve body 1, reducing vibration caused by contact friction. The bottom of valve core 4 is provided with sealing cone surface 13, increasing the contact area between valve core 4 and the inner wall of valve body 1, thereby reducing the noise caused by vertical impact. Valve core 4 is made of bakelite, reducing abnormal vibration caused by rigid impact between steel bodies, thereby achieving the purpose of vibration reduction and noise reduction.

[0027] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A bypass valve with liquid phase vibration damping function, comprising a valve body (1), characterized in that, The valve body (1) is provided with an inlet (2) and an outlet (3); a valve core (4) is used to control the opening and closing state of the bypass valve between the inlet (2) and the outlet (3); a piston (5) is provided inside the valve body (1); a compression spring (6) is provided between the piston (5) and the valve core (4); a screw (7) is provided on the valve body (1) and is threadedly connected thereto; the end of the screw (7) abuts against the piston (5); a number of circumferentially evenly distributed spacers (8) are provided on the outer wall of the valve core (4); the spacers (8) are adjacent to the inner wall of the valve body (1); a pressure relief hole (9) is provided on the valve core (4) and penetrates it axially.

2. The bypass valve with liquid phase vibration damping function according to claim 1, characterized in that, A first sealing element (10) is provided between the piston (5) and the valve body (1), and the first sealing element (10) is stuck in the groove of the piston (5); the valve core (4) is a columnar body, and a centering protrusion (11) is provided at the end of the valve core (4) facing the piston (5); the compression spring (6) is provided between the centering protrusion (11) and the piston (5).

3. The bypass valve with liquid phase vibration damping function according to claim 2, characterized in that, The core-setting protrusion (11) is a columnar body, and the outer diameter of the compression spring (6) is compatible with the outer diameter of the core-setting protrusion (11); the end of the compression spring (6) is sleeved on the core-setting protrusion (11); the outer diameter of the compression spring (6) is also compatible with the inner diameter of the valve body (1).

4. The bypass valve with liquid phase vibration damping function according to claim 1, characterized in that, The valve core (4) is also provided with a hollow channel (12), which is connected to the pressure relief hole (9); the pressure relief hole (9) is located near the top of the valve core (4), and the inner diameter of the pressure relief hole (9) is smaller than the inner diameter of the hollow channel (12).

5. The bypass valve with liquid phase vibration damping function according to claim 1, characterized in that, The valve core (4) is provided with a sealing cone surface (13) at the bottom. In the default state, the sealing cone surface (13) abuts against the inner wall of the valve body (1). The outer contour of the sealing cone surface (13) is adapted to the inner wall contour of the valve body (1).

6. The bypass valve with liquid phase vibration damping function according to claim 5, characterized in that, The valve core (4) is a columnar body, and a number of evenly distributed partitions (8) are provided around the outer wall of the valve core (4); the partitions (8) are located between the valve core (4) and the inner wall of the valve body (1); the number of partitions (8) is greater than or equal to three.

7. The bypass valve with liquid phase vibration damping function according to claim 5, characterized in that, The spacer (8) is arranged adjacent to the sealing cone surface (13); the valve body (1) is provided with an annular step (14), and in the default state, the spacer (8) abuts against the annular step (14); the outer contour of the spacer (8) is adapted to the outer contour of the annular step (14).

8. The bypass valve with liquid phase vibration damping function according to claim 1, characterized in that, The valve body (1) includes an upper valve body (15) and a lower valve body (16), and a plurality of screws (17) for fixing the upper valve body (15) and the lower valve body (16) are provided between them; a second sealing element (18) for sealing is also provided between the upper valve body (15) and the lower valve body (16).

9. The bypass valve with liquid phase vibration damping function according to claim 1, characterized in that, The valve core (4) is made of hard material and is integrally molded from bakelite.

10. The bypass valve with liquid phase vibration damping function according to claim 1, characterized in that, The valve core (4) is made of hard material and is integrally formed of steel and plastic; an insert body (19) is embedded in the sealing surface of the valve core (4).

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