Valve element assembly of overflow valve

Abstract

The overflow valve element assembly comprises a valve element body, a flow expanding valve port is formed in one end of the valve element body, a contraction groove is formed in the inner wall of one side of the flow expanding valve port, a circulation groove is formed in the end, away from the flow expanding valve port, of the valve element body, and a damping hole is formed in the inner wall of one side of the circulation groove. The damping hole is communicated with the interior of the shrinkage groove, an inner arc face is arranged on the inner wall of the flow expanding valve port, and a contact conical face is arranged on the outer wall of the valve element body. According to the valve element assembly of the overflow valve, the contact area between the valve element assembly and the inner wall of the overflow valve shell can be increased through the wear-resistant retaining shoulder and the outer arc surface which are arranged at one end of the valve element body, so that the rear position of the valve element body can still be tightly closed with the inner wall of the overflow valve shell when the contact conical surface is damaged, and the service life of the valve element body is prolonged; and the use effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow valves, in particular to an overflow valve core component. Background Art

[0002] Relief valves are commonly found in hydraulic systems, where they play a role in safety protection. When the system pressure exceeds the specified value, the relief valve opens to discharge part of the fluid in the system, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause accidents due to excessive pressure. The valve core inside the relief valve is particularly important.

[0003] The publication number CN 217582655 U discloses a new type of valve core for an overflow valve, the valve core includes a main body, the main body is designed in a cylindrical shape, a circular groove is opened in the middle of one end of the main body, a turbulence cone is designed on the outer side of the middle of the other end of the main body, and the end of the other end of the main body is designed as an outer annular cone around the periphery, a damping hole is designed in the middle of the bottom of the inner side of the circular groove, and a plurality of auxiliary flow channels are designed around the periphery of the turbulence cone near the root, the inner side of the plurality of auxiliary flow channels are connected to the inner side of the damping hole, the outer side of the damping hole is connected to the inside of the circular groove, and the outer side of the plurality of auxiliary flow channels is connected to the other end of the main body. The advantage is that the practical new type drills a plurality of auxiliary flow channels smaller than the damping hole in front of the damping hole of the valve core, and when one or more of the auxiliary flow channels are blocked, the valve core can still work normally, solving the problem of frequent disassembly of the overflow valve; a turbulence cone is designed at the front end of the valve core, and when the oil flows through the front end of the valve core, the direction of the oil is smoothly changed, solving the turbulence phenomenon.

[0004] However, the valve core has the following shortcomings: the valve core can facilitate the flow of oil when in use, but the valve core body will frequently hit the inner wall of the relief valve body under the action of hydraulic pressure and spring force during long-term use, which will cause wear on the surface of the valve core body and affect its service life.

[0005] To this end, the utility model provides a relief valve core assembly to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a relief valve core assembly to solve the above problems.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a relief valve core assembly, including a valve core body, a flow expansion valve port is provided at one end of the valve core body, a contraction groove is provided on one side inner wall of the flow expansion valve port, a flow groove is provided at one end of the valve core body away from the flow expansion valve port, a damping hole is provided on one side inner wall of the flow circulation groove, the damping hole is connected with the inside of the contraction groove, an inner wall of the flow expansion valve port is provided with an inner arc surface, an outer wall of the valve core body is provided with a contact cone surface, an outer wall of the valve core body is provided with a wear-resistant shoulder, and an outer wall of the wear-resistant shoulder is provided with an outer arc surface.

[0008] Preferably, the outer wall of the valve core body is provided with a first inclined surface, the outer wall of the valve core body is provided with a second inclined surface, and the outer wall of the valve core body is provided with a step surface. The first inclined surface, the second inclined surface and the step surface can conveniently narrow the valve core body, thereby facilitating the positioning and support of the overflow valve to prevent it from shifting.

[0009] Preferably, a connecting piece is provided on one side of the valve core body, a positioning rod is fixedly connected to one side of the connecting piece, and a contact rod is fixedly connected to one side of the connecting piece. The pressure-regulating spring can be conveniently installed on the valve core body through the provided connecting piece, and at the same time, the provided contact rod can conveniently contact the adjusting screw on the overflow valve, so as to conveniently push the connecting piece to compress the pressure-regulating spring, which is convenient to use.

[0010] Preferably, the outer wall of the valve core body is fixedly connected to a first support seat, the outer wall fixed sleeve of the positioning rod is provided with a second support seat, one end of the second support seat is fixedly connected to a pressure-adjusting spring, one end of the pressure-adjusting spring is connected to the first support seat, and the pressure of the valve core body can be adjusted by using the first support seat, the second support seat and the pressure-adjusting spring in combination, which is convenient for adjustment and use.

[0011] Preferably, a first annular groove is formed on the outer wall of the valve core body, and a first sealing ring is fixedly connected to the first annular groove. The first annular groove and the first sealing ring are used in combination to seal the inner wall of the valve core body and the overflow valve.

[0012] Preferably, a second annular groove is formed on the outer wall of the connecting piece, and a second sealing ring is fixedly connected to the second annular groove. The second annular groove and the second sealing ring are used in combination to seal the connecting piece and the inner wall of the overflow valve.

[0013] Preferably, the first sealing ring is made of rubber material, and the second sealing ring is made of rubber material. The sealing effect can be improved by providing the first sealing ring and the second sealing ring made of rubber material.

[0014] Beneficial Effects

[0015] The utility model provides a relief valve core assembly. Compared with the prior art, it has the following beneficial effects:

[0016] (1) The relief valve core assembly can increase the contact area between the relief valve core body and the inner wall of the relief valve housing by means of the wear-resistant shoulder and the outer arc surface provided at one end of the valve core body, so that when the contact cone surface is damaged, the valve core body can still remain tightly closed with the inner wall of the relief valve housing at the rear position, thereby increasing the service life of the valve core body and achieving better use effect.

[0017] (2) The relief valve core assembly can conveniently install the pressure regulating spring on the valve core body through the provided connecting piece, and can conveniently contact the adjusting screw on the relief valve through the provided contact rod, so as to conveniently push the connecting piece to compress the pressure regulating spring, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the external structure of the utility model;

[0019] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the relevant structure of the valve core body in the utility model;

[0021] Figure 4 It is a relevant assembly drawing of the adjusting member in the utility model.

[0022] In the figure: 1. valve core body; 2. expansion valve port; 3. contraction groove; 4. flow groove; 5. damping hole; 6. inner arc surface; 7. contact cone surface; 8. wear-resistant shoulder; 9. outer arc surface; 10. first inclined surface; 11. second inclined surface; 12. step surface; 13. connecting piece; 14. positioning rod; 15. contact rod; 16. first support seat; 17. second support seat; 18. pressure regulating spring; 19. first annular groove; 20. first sealing ring; 21. second annular groove; 22. second sealing ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] See also Figure 1 , Figure 2 and Figure 3 A relief valve core assembly comprises a valve core body 1, a flow expansion valve port 2 is provided at one end of the valve core body 1, a contraction groove 3 is provided on one side inner wall of the flow expansion valve port 2, the contraction groove 3 narrows from outside to inside, a flow groove 4 is provided at one end of the valve core body 1 away from the flow expansion valve port 2, a damping hole 5 is provided on one side inner wall of the flow groove 4, the damping hole 5 is connected with the inside of the contraction groove 3, an inner wall of the flow expansion valve port 2 is provided with an inner arc surface 6, an outer wall of the valve core body 1 is provided with a contact cone surface 7, an outer wall of the valve core body 1 is provided with a wear-resistant shoulder 8, and an outer wall of the wear-resistant shoulder 8 is provided with an outer arc surface 9.

[0026] Embodiment 2:

[0027] See also Figures 1 to 4 This embodiment provides a technical solution based on the first embodiment: the outer wall of the valve core body 1 is provided with a first inclined surface 10, the outer wall of the valve core body 1 is provided with a second inclined surface 11, and the outer wall of the valve core body 1 is provided with a step surface 12; a connecting piece 13 is provided on one side of the valve core body 1, a positioning rod 14 is fixedly connected to one side of the connecting piece 13, and a contact rod 15 is fixedly connected to one side of the connecting piece 13, and the contact rod 15 can be conveniently contacted with the adjusting screw on the overflow valve; the outer wall of the valve core body 1 is fixedly connected with a first support seat 16, and the positioning rod 14 is fixedly connected to one side of the connecting piece 13. A second support seat 17 is fixedly sleeved on the outer wall of the rod 14, one end of the second support seat 17 is fixedly connected to a pressure-adjusting spring 18, and one end of the pressure-adjusting spring 18 is connected to the first support seat 16; a first annular groove 19 is provided on the outer wall of the valve core body 1, and a first sealing ring 20 is fixedly connected in the first annular groove 19; a second annular groove 21 is provided on the outer wall of the connecting piece 13, and a second sealing ring 22 is fixedly connected in the second annular groove 21; the first sealing ring 20 is made of rubber material, and the second sealing ring 22 is made of rubber material.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A relief valve core assembly, comprising a valve core body (1), characterized in that: A flow expansion valve port (2) is provided at one end of the valve core body (1), a contraction groove (3) is provided on one side inner wall of the flow expansion valve port (2), a flow groove (4) is provided at one end of the valve core body (1) away from the flow expansion valve port (2), a damping hole (5) is provided on one side inner wall of the flow circulation groove (4), the damping hole (5) is connected with the inside of the contraction groove (3), the inner wall of the flow expansion valve port (2) is provided with an inner arc surface (6), the outer wall of the valve core body (1) is provided with a contact cone surface (7), the outer wall of the valve core body (1) is provided with a wear-resistant shoulder (8), and the outer wall of the wear-resistant shoulder (8) is provided with an outer arc surface (9).

2. The overflow valve core assembly according to claim 1, characterized in that: The outer wall of the valve core body (1) is provided with a first inclined surface (10), the outer wall of the valve core body (1) is provided with a second inclined surface (11), and the outer wall of the valve core body (1) is provided with a step surface (12).

3. The overflow valve core assembly according to claim 1, characterized in that: A connecting piece (13) is provided on one side of the valve core body (1), a positioning rod (14) is fixedly connected to one side of the connecting piece (13), and a contact rod (15) is fixedly connected to one side of the connecting piece (13).

4. The overflow valve core assembly according to claim 3, characterized in that: The outer wall of the valve core body (1) is fixedly connected to a first support seat (16), the outer wall of the positioning rod (14) is fixedly sleeved with a second support seat (17), one end of the second support seat (17) is fixedly connected to a pressure regulating spring (18), and one end of the pressure regulating spring (18) is connected to the first support seat (16).

5. The overflow valve core assembly according to claim 3, characterized in that: The outer wall of the valve core body (1) is provided with a first annular groove (19), and a first sealing ring (20) is fixedly connected in the first annular groove (19).

6. The overflow valve core assembly according to claim 5, characterized in that: The outer wall of the connecting piece (13) is provided with a second annular groove (21), and a second sealing ring (22) is fixedly connected in the second annular groove (21).

7. The overflow valve core assembly according to claim 6, characterized in that: The first sealing ring (20) is made of rubber material, and the second sealing ring (22) is made of rubber material.

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