An adjustable check valve

Abstract

The application discloses a kind of adjustable check valve, it is related to valve technical field, the adjustable check valve, including valve body, wherein, the outside of the pipe body of valve body is equipped with adjusting member, one end of adjusting member is U-shaped, the rear end of adjusting member is screwable structure, adjusting member can be clamped and produce displacement to coarse adjustment elastic element, elastic block and sealing end head are equipped in valve body, coarse adjustment elastic element is arranged between elastic block and sealing end head, coarse adjustment elastic element can make gas pressure preliminary adjustment;Valve body is further equipped with adjusting knob, adjusting knob is threadedly connected with one end of elastic block, the other end of elastic block is nested with the guide rod being arranged in one end of sealing end head, and the top edge of elastic block is equipped with fine adjustment elastic element along circumference, the other end of fine adjustment elastic element is connected with sealing end head, and fine adjustment elastic element can make gas pressure secondary adjustment.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to an adjustable check valve. Background Technology

[0002] As a key component in fluid control systems, check valves typically consist of a valve cover, an adjusting rod, and a valve core. In practical applications, adjusting the relative height between the adjusting rod and the valve cover directly limits the movement of the valve core, thereby controlling the flow rate of fluid through the valve.

[0003] However, existing check valves have significant limitations in their adjustment methods, supporting only unidirectional adjustment. This means the valve core stroke can only be adjusted by changing the relative position of the adjusting rod and the valve cover in one direction. This unidirectional adjustment mode severely restricts the pressure adjustment range of the check valve, making it impossible to achieve a wide range of pressure adaptations to actual operating conditions when there are large pressure fluctuations in the fluid system.

[0004] Therefore, an adjustable check valve is provided to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to solve the problem that existing adjustable check valves can only achieve unidirectional air pressure adjustment. In order to solve the above technical problem, an adjustable check valve that can achieve bidirectional and independent adjustment of air pressure is provided.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solution: an adjustable check valve, including a valve body, wherein an adjusting member is provided on the outer side of the valve body, one end of the adjusting member is U-shaped, and the rear end of the adjusting member is a rotatable structure, the adjusting member can engage and displace a coarse adjusting elastic member, an elastic pressure block and a sealing end are provided inside the valve body, the coarse adjusting elastic member is disposed between the elastic pressure block and the sealing end, the coarse adjusting elastic member can perform preliminary adjustment of air pressure; the valve body is also provided with an adjusting knob, the adjusting knob is threadedly connected to one end of the elastic pressure block, the other end of the elastic pressure block is nested with a guide rod disposed at one end of the sealing end, a fine adjusting elastic member is provided along the circumference at the top edge of the elastic pressure block, the other end of the fine adjusting elastic member is connected to the sealing end, the fine adjusting elastic member can perform secondary adjustment of air pressure.

[0007] Furthermore, according to the embodiments of this application, the valve body is provided with a gear slot on the pipe body, and at least 5 gear slots are provided, with a gap between the gear slots. The gear slots include an initial gear, a positive gear, and a negative gear.

[0008] Furthermore, according to the embodiments of this application, the adjusting member performs gear adjustment. When adjusted to the positive gear, the coarse adjustment elastic member gradually relaxes, the elastic force on the sealing end decreases, and the corresponding required air pressure value decreases.

[0009] Furthermore, according to the embodiments of this application, when the adjusting member is adjusted to the negative position, the coarse adjustment elastic member gradually tightens, the elastic force on the sealing end increases, and the corresponding required air pressure value increases.

[0010] Furthermore, according to an embodiment of this application, the adjustment knob is rotated clockwise, causing the elastic block to move upward, so that the fine-tuning elastic element is gradually relaxed, the elastic force on the sealing end decreases, and the corresponding required air pressure value decreases.

[0011] Furthermore, according to an embodiment of this application, the adjustment knob is rotated counterclockwise, causing the elastic block to move downward, so that the fine-tuning elastic element is in a gradually tightening state, the elastic force on the sealing end increases, and the corresponding required air pressure value increases.

[0012] Furthermore, according to an embodiment of this application, a fixed baffle is fixedly connected to the pipe fitting of the valve body, and holes are provided on the surface of the fixed baffle. The fixed baffle is used to discharge overpressure gas.

[0013] Furthermore, according to an embodiment of this application, the holes are evenly distributed along the circumference of the fixed baffle, and the diameter of the holes ranges from 3 to 4 mm.

[0014] Furthermore, according to the embodiments of this application, the fine-tuning elastic element is made of stainless steel, the diameter of the fine-tuning elastic element is 0.15mm, and the pressure range generated by the fine-tuning elastic element is 0-450Pa.

[0015] Furthermore, according to the embodiments of this application, the coarse adjustment elastic element is made of stainless steel, the diameter of the coarse adjustment elastic element is 0.2 mm, and the pressure range generated by the coarse adjustment elastic element is 0-1000 Pa.

[0016] Compared with the prior art, this application sets coarse and fine adjustment elastic elements on the valve body. The adjustment element is loosened by the rotatable structure at the rear end and inserted into the corresponding gear slot. Then the adjustment element is tightened to complete the adjustment of the internal air pressure of the valve body. Secondly, the adjustment knob can be rotated clockwise or counterclockwise to adjust the required pressure parameters within the vertical range corresponding to each gear using the pressure display gauge and the air inlet valve. This solves the problem that the existing adjustable check valve can only achieve unidirectional adjustment and has a small air pressure adjustment range, achieving a better effect of bidirectional and wide-range air pressure adjustment. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the planar structure of an adjustable check valve according to an embodiment of this application.

[0019] Figure 2 This is a cross-sectional structural schematic diagram of an adjustable check valve according to an embodiment of this application.

[0020] Figure 3 This is a three-dimensional structural diagram of the gear slot in an adjustable check valve according to an embodiment of this application.

[0021] In the attached diagram: 100, valve body; 110, adjusting element; 120, coarse adjustment elastic element; 130, adjusting knob; 131, groove; 140, elastic pressure block; 150, sealing end; 151, guide rod; 160, fine adjustment elastic element; 200, gear position slot; 300, locking pin; 400, fixed baffle; 500, shield. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other. Example

[0026] like Figures 1-3 As shown, this application provides an adjustable check valve, including a valve body 100. An adjusting member 110 is provided on the outer side of the valve body 100. One end of the adjusting member 110 is U-shaped, and the rear end of the adjusting member 110 is a rotatable structure. The adjusting member 110 can engage and displace a coarse adjustment elastic member 120. An elastic pressure block 140 and a sealing end 150 are provided inside the valve body 100. The coarse adjustment elastic member 120 is disposed between the elastic pressure block 140 and the sealing end 150. Component 120 enables preliminary adjustment of air pressure; valve body 100 is also provided with adjustment knob 130, which is threadedly connected to one end of elastic pressure block 140, and the other end of elastic pressure block 140 is nested with guide rod 151 provided at one end of sealing end 150. Fine adjustment elastic element 160 is provided along the circumference at the top edge of elastic pressure block 140, and the other end of fine adjustment elastic element 160 is connected to sealing end 150. Fine adjustment elastic element 160 enables secondary adjustment of air pressure.

[0027] Furthermore, the valve body 100 has a gear slot 200 on its pipe body. There are at least 5 gear slots 200, and there is a gap between the gear slots 200. The gear slots 200 include an initial gear, a positive gear, and a negative gear.

[0028] The adjusting component 110 adjusts the gear position. When adjusted to the positive gear position, the coarse adjustment elastic component 120 gradually relaxes, the elastic force on the sealing end 150 decreases, and the required air pressure value decreases accordingly. When the adjusting component 110 is adjusted to the negative gear position, the coarse adjustment elastic component 120 gradually tightens, the elastic force on the sealing end 150 increases, and the required air pressure value increases accordingly.

[0029] The adjusting component 110 is in the initial position by default, which is located in the middle position (i.e., position 0) of the position slot 200. When the adjusting component 110 is in the initial position, position 0 can control the air pressure between 650-1100 Pa. If air pressure needs to be adjusted, the rotatable structure at the rear end of the adjusting component 110 is loosened, and the adjusting component 110 is inserted into the position slot 200 of the corresponding position. When the adjusting component 110 is in the forward position, the forward position is located in the upper two positions (i.e., position 1 and position 2) of the position slot 200. When the adjustment component 110 is in the positive gear position, the position of gear 1 can control the air pressure at 900-1350Pa, and the position of gear 2 can control the air pressure at 1150-1100Pa. When the adjustment component 110 is in the negative gear position, the negative gear position is located in the lower two positions in the gear slot 200 (i.e., gear -1 and gear -2). When the adjustment component 110 is in the negative gear position, the position of gear -1 can control the air pressure at 400-8500Pa, and the position of gear -2 can control the air pressure at 150-600Pa.

[0030] When the adjustment knob 130 is rotated clockwise, it causes the elastic block 140 to move upward, gradually relaxing the fine-tuning elastic element 160 and reducing the elastic force on the sealing end 150, thus reducing the required air pressure value. When the adjustment knob 130 is rotated counterclockwise, it causes the elastic block 140 to move downward, gradually tightening the fine-tuning elastic element 160 and increasing the elastic force on the sealing end 150, thus increasing the required air pressure value.

[0031] The head of the adjustment knob 130 has vertical stripes along its circumference for easy manual turning. The adjustment knob 130 has a groove 131 in the middle, which is arranged in a ring shape to tighten the locking pin 300. This groove can both lock the pin in place and tighten it to stabilize the required adjustment parameters.

[0032] The adjusting knob 130 is threaded to one end of the elastic pressure block 140, and the other end of the elastic pressure block 140 is nested with the guide rod 151 located at one end of the sealing end 150. The elastic pressure block 140 can be moved up and down by rotating clockwise / counterclockwise, thereby controlling the air pressure.

[0033] Furthermore, a fixed baffle 400 is fixedly connected to the pipe fitting of the valve body 100. The fixed baffle 400 has holes on its surface and is used to discharge overpressure gas. The holes are evenly distributed along the circumference of the fixed baffle 400, and the diameter of the holes ranges from 3 to 4 mm.

[0034] Furthermore, the fine-tuning elastic element 160 is made of stainless steel, has a diameter of 0.15 mm, and generates a pressure range of 0-450 Pa.

[0035] Furthermore, the coarse adjustment elastic element 120 is made of stainless steel, has a diameter of 0.2 mm, and generates a pressure range of 0-1000 Pa.

[0036] The adjustable check valve can be used as follows: First, connect the adjustable check valve to the positive pressure equipment connected to the air source, ensuring that the sealing gasket is on the assembly contact surface; second, loosen the rotatable structure at the rear end of the adjusting component 110 and insert it into the corresponding gear slot 200, then tighten the adjusting component 110 to ensure there is no looseness; next, the adjusting knob 130 can be adjusted clockwise / counterclockwise. Turning the adjusting knob 130 clockwise decreases the pressure, while turning it counterclockwise increases the pressure. The required parameters can be adjusted within the vertical range corresponding to each gear using the equipment's pressure display and air inlet valve. It should be noted that this conventional air pressure detection system inevitably produces a slight deviation, with a detection deviation value of 0.5%; finally, after adjusting the required values, tighten the locking pin 300 on the top of the adjustable check valve.

[0037] Furthermore, a baffle plate 500 is installed on the top outer surface of the valve body 100 to prevent rainwater and particulate matter from entering the interior of the valve body 100.

[0038] Compared with the prior art, this application sets coarse and fine adjustment elastic elements on the valve body. The adjustment element is loosened by the rotatable structure at the rear end and inserted into the corresponding gear slot. Then the adjustment element is tightened to complete the initial adjustment of the air pressure inside the valve body. Then the adjustment knob is rotated clockwise or counterclockwise to adjust the required pressure parameters within the vertical range corresponding to each gear using the pressure display gauge and the air inlet valve. This completes the precise secondary adjustment of the air pressure inside the valve body, thereby solving the problem that the existing adjustable check valve can only achieve unidirectional adjustment and has a small air pressure adjustment range. This application achieves a better effect of bidirectional and wide-range air pressure adjustment.

[0039] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. An adjustable check valve, comprising a valve body, wherein the valve body is provided with an elastic pressure block and a sealing end, characterized in that, Also includes: An adjusting component is provided on the outer side of the valve body. One end of the adjusting component is a screw-in structure. The adjusting component can engage and displace the coarse adjustment elastic component. The coarse adjustment elastic component is disposed between the elastic pressure block and the sealing end. The adjusting component is inserted into the corresponding gear slot and screwed in. The coarse adjustment elastic component corresponds to the gear slot. The corresponding engagement range of the coarse adjustment elastic component deforms to adjust the air pressure. The valve body is provided with an adjustment knob on the top. The adjustment knob is movably connected to one end of the elastic block. The other end of the elastic block is nested with a guide rod provided at one end of the sealing end. A fine-tuning elastic element is also provided between the elastic block and the sealing end. The adjustment knob rotates, the vertical range between the elastic block and the guide rod changes, and the fine-tuning elastic element deforms accordingly to adjust the air pressure; The gear slot is provided on the pipe body of the valve body, and there are at least 5 gear slots. The gear slots are spaced apart. The gear slots include an initial gear, a positive gear, and a negative gear. The adjusting component is adjusted to a gear position. When adjusted to the positive gear position, the coarse adjustment elastic component gradually relaxes, the elastic force on the sealing end decreases, and the corresponding required air pressure value decreases. When the adjusting element is adjusted to the negative position, the coarse adjustment elastic element gradually tightens, the elastic force on the sealing end increases, and the corresponding required air pressure value increases.

2. The adjustable check valve according to claim 1, characterized in that, Rotating the adjustment knob clockwise causes the elastic block to move upward, gradually relaxing the fine-tuning elastic element. This reduces the elastic force on the sealing end, corresponding to a decrease in the required air pressure value.

3. An adjustable check valve according to claim 1, characterized in that, The adjustment knob rotates counterclockwise, causing the elastic block to move downwards, gradually tightening the fine-tuning elastic element. This increases the elastic force on the sealing end, corresponding to an increase in the required air pressure value.

4. An adjustable check valve according to claim 1, characterized in that, A fixed baffle is fixedly connected to the pipe fitting of the valve body. The fixed baffle has holes on its surface and is used to discharge overpressure gas.

5. An adjustable check valve according to claim 4, characterized in that, The holes are evenly distributed along the circumference of the fixed baffle, and the diameter of the holes ranges from 3 to 4 mm.

6. An adjustable check valve according to claim 1, characterized in that, The fine-tuning elastic element is made of stainless steel, has a diameter of 0.15 mm, and generates a pressure range of 0-450 Pa.

7. An adjustable check valve according to claim 1, characterized in that, The coarse adjustment elastic element is made of stainless steel, has a diameter of 0.2 mm, and generates a pressure range of 0-1000 Pa.

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