Control valve
The control valve addresses leakage issues by using a U-shaped buffer tube and piston mechanism to manage high fluid pressures, ensuring smooth flow and reducing overload impacts, thus improving its operational reliability.
Patent Information
- Application Number
- CN202420492249.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-13
AI Technical Summary
Control valves experience leakage due to high fluid flow rates and pressure causing instantaneous overload impacts on the inner cavity, reducing their effectiveness.
A control valve design featuring a U-shaped buffer tube to change fluid direction, a pressure reducing hole, and a piston mechanism with a spring to manage pressure, allowing fluid to flow smoothly and reduce overload impacts, thereby minimizing leakage.
The design reduces the probability of leakage by managing pressure fluctuations, enhancing the control valve's operational effectiveness.
Smart Images
Figure CN222163058U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of control valves, in particular to a control valve. Background Art
[0002] Control valves, also known as valves, are control components in fluid delivery systems. They have functions such as diversion, interception, regulation, throttling, backflow prevention, diversion or overflow pressure relief. They can be used to control various types of fluid activities such as water and various corrosive chemical media. In hydraulic pipelines, multiple related valve groups are usually used to control hydraulic pipelines; this way, the control of hydraulic pipelines and pressure equipment can be achieved.
[0003] With respect to the above-mentioned related technologies, the inventors found that due to the high flow rate and pressure of the fluid in the pipeline, the fluid easily produces a large instantaneous overload impact on the inner cavity of the control valve and causes leakage, thereby reducing the use effect of the control valve. Utility Model Content
[0004] The main technical problem solved by the utility model is to provide a control valve, in which the fluid pressure entering the pressure reducing hole drives the piston body to move, and the fluid flows into the three-way joint through the rectangular liquid outlet hole, thereby reducing the pressure in the control valve body, reducing the probability of leakage due to instantaneous overload impact, and enhancing the use effect of the control valve.
[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a control valve, including: a control valve body, one end of the control valve body is connected to a liquid inlet pipe, and the other end is connected to a liquid outlet pipe, the inner diameter of the liquid outlet pipe is larger than the inner diameter of the liquid inlet pipe, the outer end of the liquid inlet pipe is connected to a U-shaped buffer tube, the outer end of the liquid outlet pipe is connected to a three-way joint, the upper plane of the control valve body is provided with a pressure reducing hole, the outer end of the pressure reducing hole is connected to a pressure relief valve body assembly, an L-shaped pipe is connected between the pressure relief valve body assembly and one port of the three-way joint, and the other port of the three-way joint is connected to a reducing pipe joint.
[0006] By adopting the above technical scheme, when in use, the control valve is connected to the pipeline, and the fluid in the pipeline flows from the U-shaped buffer tube into the liquid inlet tube. The U-shaped buffer tube changes the flow direction of the fluid, thereby reducing the impact of the fluid on the inner cavity of the control valve body. The fluid in the liquid inlet tube flows into the inner cavity of the control valve body and then flows out through the liquid outlet tube. Since the inner diameter of the liquid outlet tube is larger than the inner diameter of the liquid inlet tube, the fluid entering the inner cavity of the control valve body can flow out quickly and smoothly, thereby reducing the pressure in the inner cavity of the control valve body. When the fluid entering the inner cavity of the control valve body generates an instantaneous overload impact force, the fluid flows into the pressure relief valve body assembly after passing through the pressure reducing hole. The pressure of the fluid entering the pressure relief valve body assembly is reduced and flows into the three-way joint through the L-shaped tube, thereby reducing the pressure in the inner cavity of the control valve body, reducing the probability of leakage due to instantaneous overload impact, and enhancing the use effect of the control valve.
[0007] In a preferred example, the utility model can be further configured as follows: the pressure relief valve body assembly includes a circular valve body and a piston body arranged in the inner cavity thereof, the lower end of the circular valve body is connected to the pressure reducing hole, the upper end opening of the circular valve body is connected to an annular plate, the inner hole of the annular plate is threadedly connected to a valve stem member, a spring is connected between the valve stem member and the piston body, the outer circle of the circular valve body is provided with a rectangular liquid outlet hole, the outer circle surface of the circular valve body is connected to an arc-shaped shell covering the rectangular liquid outlet hole, and the L-shaped tube is connected between the arc-shaped shell and one port of the three-way joint.
[0008] By adopting the above technical scheme, the fluid entering the circular valve body drives the piston body to overcome the elastic force of the spring and move. After the piston body moves a certain distance, more fluid can enter the inner cavity of the circular valve body, thereby reducing the pressure of the control valve body. After the piston body moves, the inner cavity of the circular valve body is connected with the inner cavity of the arc-shaped shell through the rectangular liquid outlet hole. The fluid flows into the L-shaped tube through the rectangular liquid outlet hole, and the fluid in the L-shaped tube flows into the three-way joint, which can continuously reduce the pressure in the inner cavity of the control valve body, reduce the probability of leakage due to instantaneous overload impact, and enhance the use effect of the control valve.
[0009] In a preferred example, the utility model can be further configured as follows: the valve stem member includes a screw threadedly connected to the inner hole of the annular plate, the lower end of the screw is connected to a circular plate, the upper end of the screw is connected to a circular handle, and the circular plate is abutted against the end of the spring.
[0010] By adopting the above technical solution, the circular plate is operated to drive the screw to rotate, and the screw drives the circular plate to move linearly, thereby adjusting the elastic force of the spring on the piston body, which is suitable for relieving pressure on fluids with different pressures.
[0011] In a preferred example, the utility model can be further configured as follows: the length of the piston body is greater than the length of the rectangular liquid outlet hole.
[0012] By adopting the above technical solution, since the length of the piston body is greater than the length of the rectangular liquid outlet hole, after the piston body moves a certain distance, the inner cavity of the control valve body is connected with the inner cavity of the arc-shaped shell through the rectangular liquid outlet hole.
[0013] In a preferred example, the utility model can be further configured as follows: the inner hole of the small-diameter end of the reducer pipe joint is equal to the inner hole of the liquid inlet pipe.
[0014] By adopting the above technical solution, the pipe diameters of the pipes connected to the liquid inlet pipe and the liquid outlet pipe are made the same.
[0015] In a preferred example, the utility model can be further configured as follows: the outer diameter of the piston body is larger than the inner diameter of the pressure reducing hole.
[0016] By adopting the above technical solution, the end of the piston body is connected with the control valve body in abutting manner, so as to achieve the purpose of limiting the position of the piston body.
[0017] In summary, the present invention includes at least one of the following beneficial technical effects:
[0018] 1. The U-shaped buffer tube changes the flow direction of the fluid, reduces the impact of the fluid on the inner cavity of the control valve body, reduces the probability of leakage due to instantaneous overload impact, and enhances the use effect of the control valve.
[0019] 2. The fluid entering the circular valve body drives the piston body to move by overcoming the elastic force of the spring. After the piston body moves a certain distance, more fluid can enter the inner cavity of the circular valve body, thereby reducing the pressure of the control valve body. After the piston body moves, the inner cavity of the circular valve body is connected with the inner cavity of the arc-shaped shell through the rectangular liquid outlet hole. The fluid flows into the L-shaped tube through the rectangular liquid outlet hole, and the fluid in the L-shaped tube flows into the three-way joint, which can continuously reduce the pressure in the inner cavity of the control valve body, reduce the probability of leakage due to instantaneous overload impact, and enhance the use effect of the control valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:
[0021] Figure 1 It is a structural schematic diagram of a preferred embodiment of a control valve of the utility model.
[0022] Figure 2 yes Figure 1 Cross-sectional view of the medium pressure relief valve body assembly.
[0023] In the figure: 1, control valve body; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, U-shaped buffer pipe; 5, three-way joint; 6, pressure reducing hole; 70, pressure relief valve body assembly; 8, L-shaped pipe; 9, reducer pipe joint;
[0024] 71. Circular valve body; 72. Piston body; 73. Ring plate; 74. Valve stem; 75. Spring; 76. Rectangular liquid outlet hole; 77. Arc-shaped housing;
[0025] 741. Screw rod; 742. Round plate; 743. Round handle. DETAILED DESCRIPTION
[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0027] It should be noted that these drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0028] Reference Figures 1-2 , is a control valve disclosed in the utility model, comprising: a control valve body 1, one end of the control valve body 1 is connected to a liquid inlet pipe 2, and the other end is connected to a liquid outlet pipe 3, the inner diameter of the liquid outlet pipe 3 is larger than the inner diameter of the liquid inlet pipe 2, the outer end of the liquid inlet pipe 2 is connected to a U-shaped buffer pipe 4, and the outer end of the liquid outlet pipe 3 is connected to a three-way joint 5.
[0029] The upper plane of the control valve body 1 is provided with a pressure reducing hole 6, the outer end of the pressure reducing hole 6 is connected to a pressure relief valve body assembly 70, an L-shaped pipe 8 is connected between the pressure relief valve body assembly 70 and one port of the three-way joint 5, and the other port of the three-way joint 5 is connected to a reducer pipe joint 9, the inner hole of the small diameter end of the reducer pipe joint 9 is equal to the inner hole of the liquid inlet pipe 2, so that the pipe diameters of the pipes connected to the liquid inlet pipe 2 and the liquid outlet pipe 3 are the same; the pressure relief valve body assembly 70 includes a circular valve body 71 and a piston body 72 arranged in its inner cavity, the lower end of the circular valve body 71 is connected to the pressure reducing hole 6 The outer diameter of the piston body 72 is larger than the inner diameter of the pressure reducing hole 6, and the piston body 72 will not enter the pressure reducing hole 6. The upper end opening of the circular valve body 71 is connected to a ring plate 73, and the inner hole of the ring plate 73 is threadedly connected to a valve stem member 74. A spring 75 is connected between the valve stem member 74 and the piston body 72. The valve stem member 74 includes a screw rod 741 threadedly connected to the inner hole of the ring plate 73, the lower end of the screw rod 741 is connected to a circular plate 742, and the upper end of the screw rod 741 is connected to a circular handle 743, and the circular plate 742 is in contact with the end of the spring 75.
[0030] The outer circle of the circular valve body 71 is provided with a rectangular liquid outlet hole 76, the length of the piston body 72 is greater than the length of the rectangular liquid outlet hole 76, the outer circle surface of the circular valve body 71 is connected to an arc-shaped shell 77 covering the rectangular liquid outlet hole 76, and the L-shaped tube 8 is connected between the arc-shaped shell 77 and one port of the three-way joint 5.
[0031] The implementation principle of this embodiment is as follows: when in use, the control valve is connected to the pipeline, and the fluid in the pipeline flows from the U-shaped buffer tube 4 into the liquid inlet tube 2. The U-shaped buffer tube 4 changes the flow direction of the fluid, reducing the impact of the fluid on the inner cavity of the control valve body 1. The fluid in the liquid inlet tube 2 flows into the inner cavity of the control valve body 1 and then flows out through the liquid outlet tube 3. Since the inner diameter of the liquid outlet tube 3 is larger than the inner diameter of the liquid inlet tube 2, the fluid entering the inner cavity of the control valve body 1 can flow out quickly and smoothly, thereby reducing the pressure in the inner cavity of the control valve body 1. When the fluid entering the inner cavity of the control valve body 1 generates an instantaneous overload impact force, the fluid flows into the pressure relief valve body assembly after passing through the pressure reducing hole 6. 70, the fluid entering the circular valve body 71 drives the piston body 72 to move by overcoming the elastic force of the spring 75. After the piston body 72 moves a certain distance, more fluid can enter the inner cavity of the circular valve body 71, thereby reducing the pressure of the control valve body 1. After the piston body 72 moves, the inner cavity of the circular valve body 71 is connected with the inner cavity of the arc-shaped shell 77 through the rectangular liquid outlet hole 76. The fluid flows into the L-shaped tube 8 through the rectangular liquid outlet hole 76, and the fluid in the L-shaped tube 8 flows into the three-way joint 5, which can continuously reduce the pressure in the inner cavity of the control valve body 1, reduce the probability of leakage due to instantaneous overload impact, and enhance the use effect of the control valve.
[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A control valve, comprising: A control valve body (1), characterized in that one end of the control valve body (1) is connected to a liquid inlet pipe (2), and the other end is connected to a liquid outlet pipe (3), the inner diameter of the liquid outlet pipe (3) is larger than the inner diameter of the liquid inlet pipe (2), the outer end of the liquid inlet pipe (2) is connected to a U-shaped buffer pipe (4), the outer end of the liquid outlet pipe (3) is connected to a three-way joint (5), the upper plane of the control valve body (1) is provided with a pressure reducing hole (6), the outer end of the pressure reducing hole (6) is connected to a pressure relief valve body assembly (70), an L-shaped pipe (8) is connected between the pressure relief valve body assembly (70) and one port of the three-way joint (5), and the other port of the three-way joint (5) is connected to a reducing pipe joint (9).
2. The control valve according to claim 1, characterized in that: The pressure relief valve body assembly (70) comprises a circular valve body (71) and a piston body (72) arranged in the inner cavity thereof, the lower end of the circular valve body (71) is connected to the pressure reducing hole (6), the upper end opening of the circular valve body (71) is connected to an annular plate (73), the inner hole of the annular plate (73) is threadedly connected to a valve stem (74), a spring (75) is connected between the valve stem (74) and the piston body (72), the outer circle of the circular valve body (71) is provided with a rectangular liquid outlet hole (76), the outer circle surface of the circular valve body (71) is connected to an arc-shaped shell (77) covering the rectangular liquid outlet hole (76), and the L-shaped tube (8) is connected between the arc-shaped shell (77) and one port of the three-way joint (5).
3. The control valve according to claim 2, characterized in that: The valve stem (74) includes a screw (741) threadedly connected to the inner hole of the annular plate (73), the lower end of the screw (741) is connected to a circular plate (742), the upper end of the screw (741) is connected to a circular handle (743), and the circular plate (742) is abuttingly connected to the end of the spring (75).
4. The control valve according to claim 2, characterized in that: The length of the piston body (72) is greater than the length of the rectangular liquid outlet hole (76).
5. The control valve according to claim 1, characterized in that: The inner hole of the small diameter end of the reducer pipe joint (9) is equal to the inner hole of the liquid inlet pipe (2).
6. The control valve according to claim 2, characterized in that: The outer diameter of the piston body (72) is greater than the inner diameter of the pressure reducing hole (6).