Pressure-adjustable overflow valve
By introducing a bent tail pipe into the overflow pipe of the overflow valve, the problem of liquid return pressure under high pressure is solved, and the pressure regulation and control capability and safety of the overflow valve are improved.
Patent Information
- Application Number
- CN202422081517.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-27
AI Technical Summary
When a general overflow valve is quickly sent to liquid at high pressure, there will be a return pressure at the end of the straight pipe, resulting in unsmooth pressure regulation.
An adjustable pressure relief valve is designed, and its relief pipe includes two sections of pipes, DC pipe and bent tail pipe. The tail section of the bent tail pipe can solve the problem of liquid return pressure. Before the liquid enters the DC pipe, it will pass through the bent tail pipe and then enter the overflow chamber.
Through the design of the tail tube, the liquid return is reduced, the DC tube is protected, the safety of the overflow valve body is improved, and the pressure regulation is smoother.
Smart Images
Figure CN222992234U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of high-pressure pumps, and particularly to an adjustable pressure relief valve. Background Technique
[0002] A relief valve is a commonly used hydraulic component for controlling the flow rate and pressure in a hydraulic system. Its working principle is to control the pressure of the system by adjusting the flow rate in the hydraulic system.
[0003] A relief valve usually consists of a valve body, a valve core, a spring, an adjusting screw, etc. When the flow rate in the hydraulic system exceeds the set value, the relief valve will open to divert the excess hydraulic oil back to the fuel tank to maintain the pressure stability of the system. However, in general, the relief valve uses a straight pipe channel to divert the excess hydraulic oil back to the fuel tank, and there will be a backflow pressure at the end of the straight pipe during high-pressure and rapid liquid delivery, resulting in the problem of unsmooth pressure regulation.
[0004] Therefore, to solve the above problems, the utility model provides an adjustable pressure relief valve with the ability of precise pressure regulation. The overflow pipe includes two sections of pipes, namely a direct current pipe and a bent tail pipe. The design of the tail section of the bent tail pipe can solve the problem of liquid backflow pressure. The liquid entering the direct current pipe will first pass through the bent tail pipe and then enter the overflow chamber. The bent tail pipe makes it difficult for the liquid to flow back, plays a protective role for the direct current pipe, and improves the safety of the relief valve body. Content of the Utility Model
[0005] The main technical problem to be solved by the utility model is to provide an adjustable pressure relief valve that can be used in a high-pressure pump. The relief valve body has the ability of precise pressure regulation. The overflow pipe includes two sections of pipes, namely a direct current pipe and a bent tail pipe. The design of the tail section of the bent tail pipe can solve the problem of liquid backflow pressure, and the pressure regulation is smoother.
[0006] To solve the above technical problems, a technical solution adopted by the utility model is: to provide an adjustable pressure relief valve, including a relief valve body. An inlet valve cover and an outlet valve cover are respectively arranged at both ends of the relief valve body. An inlet valve core is installed in the inlet valve cover, and an outlet valve core is installed in the outlet valve cover. A relief valve seat is connected between the inlet valve cover and the outlet valve cover. Overflow chambers are opened on both sides inside the relief valve seat. An overflow pipe is connected between the overflow chamber and the inlet valve core. The overflow pipe includes two sections of pipes, namely a direct current pipe and a bent tail pipe. One end of the direct current pipe is connected to the inlet valve core, the other end of the direct current pipe is connected to the bent tail pipe, and the bent tail pipe is connected to the overflow chamber.
[0007] In a preferred embodiment of the utility model, the direct current pipe and the bent tail pipe are of an integral structure, and the length of the bent tail pipe is less than that of the direct current pipe.
[0008] In a preferred embodiment of the present utility model, the DC pipe is obliquely arranged towards the overflow chambers on both sides of the overflow valve seat.
[0009] In a preferred embodiment of the present utility model, the overflow pipes on both sides inside the overflow valve seat are symmetrically arranged.
[0010] The beneficial effects of the present utility model are as follows: The present utility model can be used in high-pressure pumps. The overflow valve body has the ability of precise pressure regulation. The overflow chambers are provided on both sides of the overflow valve seat, which can solve the problem of high-pressure overflow relief. The overflow pipe includes two sections of pipes, namely the DC pipe and the bent tail pipe. The design of the tail section of the bent tail pipe can solve the problem of liquid backflow pressure. The liquid entering the DC pipe will first pass through the bent tail pipe and then enter the overflow chamber. The bent tail pipe makes it difficult for the liquid to flow back, plays a protective role for the DC pipe, improves the safety of the overflow valve body, and makes the pressure regulation smoother. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:
[0012] Figure 1 is a schematic structural diagram of a preferred embodiment of an adjustable pressure overflow valve of the present utility model;
[0013] The markings of each component in the drawings are as follows: 1. Overflow valve body; 2. Liquid inlet valve cover; 3. Liquid outlet valve cover; 4. Liquid inlet valve core; 5. Liquid outlet valve core; 6. Overflow valve seat; 7. Overflow chamber; 8. Overflow pipe; 9. DC pipe; 10. Bent tail pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only some of the embodiments of the present utility model, rather than all of them. 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.
[0015] Please refer to Figure 1 , the embodiments of the present utility model include:
[0016] An adjustable pressure relief valve includes a relief valve body 1. An inlet valve cover 2 and an outlet valve cover 3 are respectively arranged at both ends of the relief valve body 1. An inlet valve core 4 is installed in the inlet valve cover 2, and an outlet valve core 5 is installed in the outlet valve cover 3. A relief valve seat 6 is connected between the inlet valve cover 2 and the outlet valve cover 3. Two overflow chambers 7 are provided on both sides inside the relief valve seat 6. An overflow pipe 8 is connected between the overflow chamber 7 and the inlet valve core 5. The overflow pipe 8 includes two sections of pipes, namely a straight pipe 9 and a bent tail pipe 10. One end of the straight pipe 9 is connected to the inlet valve core 5, the other end of the straight pipe 9 is connected to the bent tail pipe 10, and the bent tail pipe 10 is connected to the overflow chamber 7.
[0017] In addition, the straight pipe 9 and the bent tail pipe 10 are of an integral structure, and the length of the bent tail pipe 10 is set to be less than that of the straight pipe 9.
[0018] In addition, the straight pipe 9 is obliquely arranged towards the overflow chambers 7 on both sides of the relief valve seat 6.
[0019] In addition, the overflow pipes 8 on both sides inside the relief valve seat 6 are symmetrically arranged.
[0020] The structure of the product of the present utility model is that an inlet valve cover 2 and an outlet valve cover 3 are respectively arranged at both ends of the relief valve body 1. An inlet valve core 4 is installed in the inlet valve cover 2, and an outlet valve core 5 is installed in the outlet valve cover 3. A relief valve seat 6 is connected between the inlet valve cover 2 and the outlet valve cover 3.
[0021] Two overflow chambers 7 are provided on both sides inside the relief valve seat 6, and an overflow pipe 8 is connected between the overflow chamber 7 and the inlet valve core 5.
[0022] The overflow pipe 8 includes two sections of pipes, namely a straight pipe 9 and a bent tail pipe 10. One end of the straight pipe 9 is connected to the inlet valve core 5, the other end of the straight pipe 9 is connected to the bent tail pipe 10. The straight pipe 9 is obliquely arranged towards the overflow chambers 7 on both sides of the relief valve seat 6. The overflow pipes 8 on both sides inside the relief valve seat 6 are symmetrically arranged. The bent tail pipe 10 is connected to the overflow chamber 7. The straight pipe 9 and the bent tail pipe 10 are of an integral structure. The length of the bent tail pipe 10 is set to be less than that of the straight pipe 9. The relief valve body 1 has the ability of precise pressure regulation. The overflow chambers 7 provided on both sides of the relief valve seat 6 can solve the problem of high-pressure overflow relief. The overflow pipe 8 includes two sections of pipes, namely a straight pipe 9 and a bent tail pipe 10. The tail section design of the bent tail pipe 10 can solve the problem of liquid backflow pressure. The liquid entering the straight pipe 9 will first pass through the bent tail pipe 10 and then enter the overflow chamber 7. There will be no liquid backflow problem in the bent tail pipe 10, which plays a protective role for the straight pipe 9, improves the safety of the relief valve body 1, and makes the pressure regulation smoother.
[0023] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.
Claims
1. A pressure-adjustable relief valve, comprising a relief valve body, characterized in that: An inlet valve cover and an outlet valve cover are respectively provided at both ends of the overflow valve body, an inlet valve core is installed in the inlet valve cover, and an outlet valve core is installed in the outlet valve cover, an overflow valve seat is connected between the inlet valve cover and the outlet valve cover, overflow chambers are provided on both sides of the overflow valve seat, an overflow pipe is connected between the overflow chamber and the inlet valve core, and the overflow pipe includes two sections of pipelines, namely a direct pipe and a bent tail pipe, one end of the direct pipe is connected to the inlet valve core, and the other end of the direct pipe is connected to the bent tail pipe, and the bent tail pipe is connected to the overflow chamber.
2. The adjustable pressure relief valve according to claim 1, characterized in that: The straight pipe and the bent tail pipe are an integrated structure, and the bent tail pipe is shorter than the straight pipe.
3. The adjustable pressure relief valve according to claim 2, characterized in that: The direct current pipe is arranged obliquely toward the overflow chamber on both sides of the overflow valve seat.
4. The adjustable pressure relief valve according to claim 3, characterized in that: The overflow pipes on both sides of the overflow valve seat are symmetrically arranged.