One-way valve for high-pressure fluid
The single-way valve design with a rolling ball and pressure relief system addresses the issue of high-pressure sealing failures by preventing backflow and safely managing excess pressure, enhancing device safety and reducing maintenance needs.
Patent Information
- Application Number
- CN202421628993.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-10
AI Technical Summary
Existing check valves for high-pressure fluids are prone to lose control in high-pressure environments, resulting in reduced system safety and may even be damaged, and valve replacement is required frequently.
A one-way valve structure including a one-way valve tube, a ball, a pressure relief hole and a pressure relief tube is designed. The fluid flow is achieved by combining the ball and the spring, and the plug is driven to move along the guide rail by rotating the threaded screw at high pressure. The pressure relief tube discharges excess liquid and releases internal pressure.
It effectively avoids equipment damage caused by reverse flow of liquid, timely releases internal pressure, protects the device safely, and avoids damage caused by excessive pressure.
Smart Images
Figure CN223105347U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of check valves, in particular to a check valve for high-pressure fluids. Background Technique
[0002] A check valve for high-pressure fluids is a key fluid control component. Its design purpose is to ensure that the fluid can only flow in one direction. In various systems and equipment, it plays a crucial role, especially in medium and high-pressure applications, where its performance is particularly outstanding. For this type of check valve, there are various design options available in the market to meet different actual needs. For example, the spring-type check valve is a common type. It uses the elastic force of the spring to close the valve port. When the fluid flows in from the inlet, the spring is compressed, allowing the fluid to pass through. In addition, there are other designs such as the lift valve core check valve and the fully welded high-purity check valve. No matter which design, all these check valves should have excellent sealing performance to ensure safe operation in a high-pressure environment.
[0003] Currently, for the existing check valves for high-pressure fluids, during production and manufacturing, the outer wall of the device is usually thickened to achieve the effect of resisting high pressure. This anti-pressure method has low cost and high cost performance. However, when the internal pressure of the device exceeds the threshold that the device can bear, it may lose its control function, resulting in a reduction in the safety of the system. Excessive pressure may even cause damage to the check valve, and a new valve needs to be replaced to ensure the normal operation of the system. In view of this, we provide a check valve for high-pressure fluids. Content of the Utility Model
[0004] The purpose of the utility model is to make up for the deficiencies of the existing technology and provide a check valve for high-pressure fluids.
[0005] To achieve the above object, the utility model provides the following technical solution: A check valve for high-pressure fluids, including a check valve tube. A ball is slidably connected inside the check valve tube near one end, and a connection groove is opened on the outer wall of the check valve tube away from the ball end. A fluid cavity is opened in the center of the check valve tube. A pressure relief hole is opened in the center of the top surface of the check valve tube, and the bottom surface of the pressure relief hole is communicated with the top end inside the fluid cavity. A pressure relief tube is fixedly connected to the top end inside the check valve tube through the pressure relief hole. A plug is slidably connected to the center inside the pressure relief tube. A pressure relief water port is fixedly connected to one side of the outer wall of the pressure relief tube. A closer is fixedly connected to the bottom end inside the pressure relief tube, and a closing inclined surface is opened on the top surface of the closer. The closer corresponds to the bottom surface of the plug. A rotating shaft connecting piece is fixedly connected to the center of the top surface of the plug, and the plug is rotatably connected to a threaded lead screw through the rotating shaft connecting piece. The bottom end of the outer wall of the threaded lead screw passes through the center of the top surface of the lead screw limiter through a thread, and the threaded lead screw is rotatably connected to the center inside the lead screw limiter through the thread on the outer wall.
[0006] As described above, one end inside the one-way valve pipe is fixedly connected with a one-way stopper through a fluid chamber, and the one-way stopper is located at one end of the inner wall of the fluid chamber. A contact inclined surface is provided on the outer wall of the one-way stopper near the ball, and a first inclined surface is simultaneously provided on the outer wall of the one-way stopper away from the ball.
[0007] As described above, the ball is located on one side inside the one-way stopper, and one side of the outer wall of the ball is in contact with the outer wall of the contact inclined surface. A contact spring is fixedly connected to the side of the outer wall of the ball away from the one-way stopper, and the ball is located at one end inside the contact spring.
[0008] As described above, a spring limiter is fixedly connected to the end of the fluid chamber away from the one-way stopper, and a second inclined surface is provided at the edge of the outer wall of the spring limiter. One side of the outer wall of the spring limiter is fixedly connected to one end of the outer wall of the contact spring, and a water outlet is provided at the center inside the spring limiter.
[0009] As described above, a screw rod limiter is fixedly connected to the top end inside the pressure relief pipe, and a set of guide rails are respectively fixedly connected to both sides of the bottom surface of the screw rod limiter. The guide rails are located between the screw rod limiter and the closer, and one end of the outer wall of the guide rail penetrates through one side inside the plug and is slidably connected thereto.
[0010] Compared with the prior art, the one-way valve for high-pressure fluid has the following beneficial effects:
[0011] First, after the device is connected to external facilities, one end of the one-way stopper is connected to the water inlet, and the water outlet pipe is connected through the connection groove. When the device works, water flows into the device from the center inside the one-way stopper through the first inclined surface. The water flow presses the contact spring by contacting the ball, creating a gap between the ball and the one-way stopper, allowing the water flow to enter the device and flow into the external water outlet pipe through the water outlet provided at the center inside the spring limiter. When there is no water flow into one end of the one-way stopper, the ball is pushed against the outer wall of the contact inclined surface by the elasticity of the contact spring itself, preventing the water flow from flowing out from one end of the one-way stopper. Thus, the device plays a role in restricting the fluid flow direction, effectively avoiding the reverse flow of the liquid, which may cause the external water pump to reverse and damage the equipment.
[0012] Second, when the internal pressure of the device of the present utility model is too high, turn the handle fixed at the top of the threaded screw rod. Through the thread on the outer wall of the threaded screw rod, when the threaded screw rod rotates, it drives the plug connected to the bottom end to move vertically upward along the guide rails fixedly connected to both sides inside the pressure relief pipe, so that water can flow into the inside of the pressure relief pipe through the center of the closer and discharge the excess liquid to the outside through the pressure relief water outlet. Thus, when the internal pressure of the device is too high, the excess liquid can be discharged, enabling the device to effectively and timely release the internal pressure and protect the safety of the device, effectively avoiding damage to the device caused by liquid backflow due to excessive pressure inside the device.
[0013] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0015] Figure 2 is a front structural schematic diagram of the present utility model;
[0016] Figure 3 is a three-dimensional structural schematic diagram of a partial cross-section of the one-way valve pipe of the present utility model;
[0017] Figure 4 is a three-dimensional structural schematic diagram of a partial cross-section of the pressure relief pipe of the present utility model.
[0018] In the figure: 1. One-way valve pipe; 101. One-way plug; 102. Contact inclined surface; 103. First inclined surface; 104. Contact spring; 105. Spring limiter; 106. Second inclined surface; 107. Water outlet; 2. Ball; 3. Connection groove; 4. Fluid cavity; 5. Pressure relief hole; 6. Pressure relief pipe; 601. Plug; 601. Plug; 602. Pressure relief water outlet; 603. Closer; 604. Closing inclined surface; 605. Screw rod limiter; 606. Guide rail; 607. Rotating shaft connector; 608. Threaded screw rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0020] As Figures 1-4As shown in the figure, the present utility model provides a technical solution: a check valve for high-pressure fluid, including a check valve tube 1. A ball 2 is slidably connected near one end inside the check valve tube 1. A connection groove 3 is opened at one end of the outer wall of the check valve tube 1 away from the ball 2. A fluid cavity 4 is opened at the center inside the check valve tube 1. A pressure relief hole 5 is opened at the center of the top surface of the check valve tube 1, and the bottom surface of the pressure relief hole 5 communicates with the top end inside the fluid cavity 4. A pressure relief tube 6 is fixedly connected to the top end inside the check valve tube 1 through the pressure relief hole 5. A plug 601 is slidably connected to the center inside the pressure relief tube 6.
[0021] After the device is connected to external facilities, one end of the one-way plug 101 is connected to the water inlet, and the water outlet pipe is connected through the connection groove 3. When the device works, water flows into the device from the center inside the one-way plug 101 through the first inclined surface 103. The water flow presses against the contact spring 104 by contacting the ball 2, creating a gap between the ball 2 and the one-way plug 101, allowing the water flow to enter the device, and flowing into the external water outlet pipe through the water outlet 107 opened at the center inside the spring limiter 105. When there is no water flow into one end of the one-way plug 101, the ball 2 is pushed against the outer wall of the contact inclined surface 102 by the elasticity of the contact spring 104 itself, preventing the water flow from flowing out of one end of the one-way plug 101. When the internal pressure of the device is too high, turn the handle fixed to the top end of the threaded screw rod 608. Through the thread on the outer wall of the threaded screw rod 608, when the threaded screw rod 608 rotates, it drives the plug 601 rotatably connected to the bottom end. The plug 601 moves vertically upward along the guide rails 606 fixedly connected to both sides inside the pressure relief tube 6, allowing the water flow to enter the pressure relief tube 6 through the center inside the closer 603 and discharge the excess liquid to the outside through the pressure relief water outlet 602. Thus, the device can discharge the excess liquid when the internal pressure is too high, enabling the device to effectively and timely release the internal pressure and protect the safety of the device, effectively avoiding damage to the device caused by liquid backflow due to excessive pressure inside the device.
[0022] As Figures 1-3As shown, one end inside the one-way valve tube 1 is fixedly connected with a one-way stopper 101 through a fluid chamber 4, and the one-way stopper 101 is located at one end of the inner wall of the fluid chamber 4. A contact inclined surface 102 is provided on the outer wall of the one-way stopper 101 close to one side of the ball 2, and a first inclined surface 103 is simultaneously provided on the outer wall of the one-way stopper 101 far from the ball 2. The ball 2 is located on one side inside the one-way stopper 101, and one side of the outer wall of the ball 2 abuts against the outer wall of the contact inclined surface 102. A contact spring 104 is fixedly connected to the side of the outer wall of the ball 2 far from the one-way stopper 101, and the ball 2 is located at one end inside the contact spring 104. One end of the fluid chamber 4 far from the one-way stopper 101 is fixedly connected with a spring stopper 105, and a second inclined surface 106 is provided at the edge of the outer wall of the spring stopper 105. One side of the outer wall of the spring stopper 105 is fixedly connected to one end of the outer wall of the contact spring 104, and a water outlet 107 is provided at the center inside the spring stopper 105.
[0023] After connecting the device to an external facility, connect one end of the one-way stopper 101 to the water inlet and connect the outlet pipe through the connection groove 3. When the device works, water flows into the device from the center inside the one-way stopper 101 through the first inclined surface 103. The water flow presses the contact spring 104 by contacting the ball 2, creating a gap between the ball 2 and the one-way stopper 101, allowing the water flow to enter the device and flow out through the water outlet 107 provided at the center inside the spring stopper 105. When there is no water flow into one end of the one-way stopper 101, the ball 2 is pushed by the elasticity of the contact spring 104 to abut against the outer wall of the contact inclined surface 102, preventing the water flow from flowing out of one end of the one-way stopper 101. Thus, the device plays a role in restricting the fluid flow direction, effectively avoiding the reverse flow of liquid, causing the external water pump to reverse, and damaging the equipment.
[0024] As Figure 1 、 Figure 2 and Figure 4 As shown, a lead screw stopper 605 is fixedly connected to the top end inside the pressure relief pipe 6, and a set of guide rails 606 are respectively fixedly connected to both sides of the bottom surface of the lead screw stopper 605. The guide rails 606 are located between the lead screw stopper 605 and the closer 603, and one end of the outer wall of the guide rails 606 penetrates through one side inside the plug 601 and is slidably connected to it.
[0025] When the internal pressure of the device is too high, turn the handle fixed at the top of the threaded screw rod 608. Through the thread on the outer wall of the threaded screw rod 608, when the threaded screw rod 608 rotates, it drives the plug 601 connected to the bottom end to rotate. The plug 601 moves vertically upward along the guide rail 606 fixedly connected to both sides inside the pressure relief pipe 6, enabling water to flow into the pressure relief pipe 6 through the center inside the closer 603 and discharging the excess liquid to the outside through the pressure relief water outlet 602. Thus, when the internal pressure of the device is too high, the excess liquid can be discharged, enabling the device to effectively and timely release the internal pressure and protecting the safety of the device, effectively avoiding damage to the device caused by liquid backflow due to excessive internal pressure.
[0026] Working principle: After the device is connected to external facilities, one end of the one-way plug 101 is connected to the water inlet, and the water outlet pipe is connected through the connection groove 3. When the device is working, water flows into the device through the first inclined surface 103 from the center inside the one-way plug 101. The water flow presses the contact spring 104 through the contact ball 2, creating a gap between the ball 2 and the one-way plug 101, allowing the water flow to enter the device and flow out through the water outlet 107 opened at the center inside the spring stopper 105 into the external water outlet pipe. When there is no water flow into one end of the one-way plug 101, due to the elasticity of the contact spring 104 itself, the ball 2 is pushed against the outer wall of the contact inclined surface 102, preventing the water flow from flowing out of one end of the one-way plug 101. When the internal pressure of the device is too high, turn the handle fixed at the top of the threaded screw rod 608. Through the thread on the outer wall of the threaded screw rod 608, when the threaded screw rod 608 rotates, it drives the plug 601 connected to the bottom end to rotate. The plug 601 moves vertically upward along the guide rail 606 fixedly connected to both sides inside the pressure relief pipe 6, enabling water to flow into the pressure relief pipe 6 through the center inside the closer 603 and discharging the excess liquid to the outside through the pressure relief water outlet 602. Thus, the device plays a role in restricting the flow direction of the fluid.
[0027] It should be noted that in this text, the orientation or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are 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. Therefore, it should not be construed as a limitation to the present utility model. The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "fixedly installed", "installed", "connected", "coupled" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "coupled" can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A one-way valve for high-pressure fluid, comprising a one-way valve tube (1), characterized in that: A ball (2) is slidably connected near one end inside the one-way valve tube (1), and a connection groove (3) is formed at one end of the outer wall of the one-way valve tube (1) away from the ball (2). A fluid cavity (4) is formed at the center inside the one-way valve tube (1). A pressure relief hole (5) is formed at the center of the top surface of the one-way valve tube (1), and the bottom surface of the pressure relief hole (5) communicates with the inner top end of the fluid cavity (4). A pressure relief tube (6) is fixedly connected to the inner top end of the one-way valve tube (1) through the pressure relief hole (5). A plug (601) is slidably connected to the center inside the pressure relief tube (6). A pressure relief water port (602) is fixedly connected to one side of the outer wall of the pressure relief tube (6). A closer (603) is fixedly connected to the bottom end inside the pressure relief tube (6), and a closing inclined surface (604) is formed on the top surface of the closer (603). The closer (603) corresponds to the bottom surface of the plug (601). A rotating shaft connecting piece (607) is fixedly connected to the center of the top surface of the plug (601), and a threaded lead screw (608) is rotatably connected to the plug (601) through the rotating shaft connecting piece (607). The bottom end of the outer wall of the threaded lead screw (608) penetrates through the center of the top surface of the lead screw stopper (605) through threads, and the threaded lead screw (608) is rotatably connected to the center inside the lead screw stopper (605) through the external threads on its outer wall.
2. The one-way valve for high-pressure fluid according to claim 1, characterized in that: A one-way stopper (101) is fixedly connected to one end inside the one-way valve tube (1) through the fluid cavity (4), and the one-way stopper (101) is located at one end of the inner wall of the fluid cavity (4). A contact inclined surface (102) is formed on the outer wall of the one-way stopper (101) near the ball (2). A first inclined surface (103) is formed on the outer wall of the one-way stopper (101) away from the ball (2).
3. The one-way valve for high-pressure fluid according to claim 2, characterized in that: The ball (2) is located on one side inside the one-way stopper (101), and one side of the outer wall of the ball (2) is in contact with the outer wall of the contact inclined surface (102). A contact spring (104) is fixedly connected to the side of the outer wall of the ball (2) away from the one-way stopper (101), and the ball (2) is located at one end inside the contact spring (104).
4. The one-way valve for high-pressure fluid according to claim 3, characterized in that: A spring stopper (105) is fixedly connected to the end of the fluid cavity (4) away from the one-way stopper (101), and a second inclined surface (106) is formed at the edge of the outer wall of the spring stopper (105). One side of the outer wall of the spring stopper (105) is fixedly connected to one end of the outer wall of the contact spring (104), and a water outlet (107) is formed at the center inside the spring stopper (105).
5. A one-way valve for high-pressure fluid according to claim 1, characterized in that: A lead screw stopper (605) is fixedly connected to the top end inside the pressure relief tube (6), and a set of guide rails (606) are respectively fixedly connected to both sides of the bottom surface of the lead screw stopper (605). The guide rails (606) are located between the lead screw stopper (605) and the closer (603), and one end of the outer wall of the guide rails (606) penetrates through one side inside the plug (601) and is slidably connected to it.