Novel plunger type bypass valve

Abstract

The utility model relates to a novel plunger type bypass valve which comprises a plunger, a spring and a screw plug, the spring is provided with two ends, the plunger is detachably and fixedly connected with one end of the spring, the screw plug is detachably and fixedly connected with the other end of the spring, the plunger is of a cylindrical structure, and the cross section of the plunger is round. The novel plunger type bypass valve is simple in structure, stable and reliable in process, low in cost, free of abnormal sound in use and good in pressure relief effect.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engine oil coolers, in particular to a novel plunger type bypass valve. Background Art

[0002] The bypass valve is an essential component of the automobile engine oil cooler. Its working principle is to use the seal between the shell and the bypass valve screw plug to adjust the opening and closing of the valve by pressure, thereby controlling the pressure relief. Specifically, when the bypass valve is closed, the plunger and valve seat inside the shell are tightly fitted, and the plunger is closed, so the fluid cannot pass through; when the bypass valve is opened, the valve seat and plunger inside the shell are separated, and the fluid can smoothly pass through the bypass pipe to achieve the purpose of pressure relief.

[0003] Most bypass valves in the prior art achieve the purpose of pressure relief through a combination of a ball valve and a spring. The spring holds the ball valve with a preload, and the ball valve seals the housing. When the oil pressure reaches a threshold, the ball valve is pushed, and the ball valve and the housing are separated, thereby achieving the purpose of pressure relief. However, the ball valve and the housing of such bypass valves in the prior art are sealed by line contact. However, in actual working process, the engine generates vibrations when running at high speed, which are then transmitted to the ball valve, generating abnormal noises between the ball valve and the housing, and at the moment of vibration, a gap is briefly generated between the ball valve and the housing, affecting the sealing performance. Summary of the invention

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a novel plunger type bypass valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of plunger-type bypass valve, comprising a plunger, a spring and a screw plug, the spring having two ends, the plunger being detachably fixedly connected to one end of the spring, the screw plug being detachably fixedly connected to the other end of the spring, the plunger being a cylindrical structure, and the cross-section of the plunger being circular.

[0006] In one embodiment of the present application, the plunger includes a circumferential outer side surface and a top surface, the circumferential outer side surface forms a cylindrical structure with openings at both ends along the circumference, and the top surface is fixedly connected to one end of the cylindrical structure formed by the circumferential outer side surface along the circumference, so that the plunger has a first accommodating cavity, and the other end of the plunger is sealed by the top surface.

[0007] In one embodiment of the present application, the top surface and the circumferential outer side surface are integrally formed.

[0008] In one embodiment of the present application, the inner diameter of the first accommodating cavity of the plunger is larger than the outer diameter of the spring, and one end of the spring is placed in the first accommodating cavity, so that the plunger and the spring are detachably fixedly connected together.

[0009] In one embodiment of the present application, the screw plug includes a shell connecting section, the shell connecting section has a second accommodating chamber and a bottom, the shell connecting section is a cylindrical structure, the second accommodating chamber is arranged at one end of the cylindrical structure, and the bottom is arranged at the other end of the cylindrical structure. The bottom seals one end of the second accommodating chamber, so that the other end of the spring is placed in the second accommodating chamber and is supported by the bottom, and the bottom plays a limiting role.

[0010] In one embodiment of the present application, a thread is provided on the outer surface of the shell connecting section of the screw plug.

[0011] In one embodiment of the present application, the screw plug further includes a limiting section, which is a cylindrical structure, and the limiting section is fixedly connected to the shell connecting section.

[0012] In one embodiment of the present application, the outer diameter of the limiting section is greater than the outer diameter of the shell connecting section, and the screw plug is integrally formed.

[0013] In one embodiment of the present application, a hexagonal inner hole is provided on the limiting segment, and the hexagonal inner hole is recessed inwardly from the limiting segment along the axis direction of the limiting segment to a preset depth.

[0014] In one embodiment of the present application, at least one exhaust hole is provided on the circumferential outer side surface of the plunger, and the exhaust hole is communicated with the first accommodating chamber.

[0015] The beneficial effects of the present application are as follows: the novel plunger-type bypass valve provided by the present application has a simple structure, a stable and reliable process, a low cost, does not generate abnormal noise during use, and has a good pressure relief effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a novel plunger-type bypass valve. DETAILED DESCRIPTION

[0017] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0018] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0019] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0020] Please refer to Figure 1 The present application provides a novel plunger-type bypass valve, the bypass valve comprises a plunger 1, a spring 2 and a screw plug 3, the spring 2 has two ends, the plunger 1 is detachably fixedly connected to one end of the spring 2, the screw plug 3 is detachably fixedly connected to the other end of the spring 2, the plunger 1 is a cylindrical structure, and the cross section of the plunger 1 is circular. In this way, the plunger 1 of the cylindrical structure realizes surface contact sealing with the housing of the engine oil cooler, and when the oil pushes the plunger 1, the oil also contacts the plunger 1, so that pressure relief can be better achieved.

[0021] The plunger 1 includes a circumferential outer side surface 11 and a top surface 12. The circumferential outer side surface 11 forms a cylindrical structure with openings at both ends along the circumference. The top surface 12 and one end of the cylindrical structure formed by the circumferential outer side surface 11 along the circumference are fixedly connected, so that the plunger 1 has a first accommodating cavity 14, and the other end of the plunger 1 is sealed by the top surface 12.

[0022] The top surface 12 and the circumferential outer surface 11 are integrally formed.

[0023] The inner diameter of the first accommodating cavity 14 of the plunger 1 is larger than the outer diameter of the spring 2 , and one end of the spring 2 is placed in the first accommodating cavity 14 , so that the plunger 1 and the spring 2 are detachably fixedly connected together.

[0024] The screw plug 3 includes a shell connecting section 31, and the shell connecting section 31 has a second accommodating chamber 34 and a bottom 33. The shell connecting section 31 is a cylindrical structure. The second accommodating chamber 34 is arranged at one end of the cylindrical structure, and the bottom 33 is arranged at the other end of the cylindrical structure. The bottom 33 seals one end of the second accommodating chamber 34, so that the other end of the spring 2 is placed in the second accommodating chamber 34 and is supported by the bottom 33. The bottom 33 plays a role of limiting.

[0025] The outer surface of the shell connecting section 31 of the screw plug 3 is provided with threads, so that the screw plug 3 is fixedly connected with the cooler housing by means of threaded connection.

[0026] The screw plug 3 further includes a limiting section 32, which is a cylindrical structure and is fixedly connected to the shell connecting section 31. The limiting section 32 is used to prevent the shell connecting section 31 from further screwing in when the shell connecting section 31 is threadedly connected to the cooler housing, thereby playing a limiting role.

[0027] The outer diameter of the limiting section 32 is larger than the outer diameter of the shell connecting section 31, and the screw plug 3 is integrally formed. In this way, when the shell connecting section 31 is screwed into the mounting hole of the cooler shell, the limiting section 32 overlaps the cooler shell, thereby preventing the shell connecting section 31 from further screwing in.

[0028] The limiting section 32 is provided with a hexagonal inner hole 36, which is recessed inwardly from the limiting section 32 along the axis of the limiting section 32 to a preset depth. The screw plug 3 is installed in the cooler housing in cooperation with the hexagonal inner hole 36.

[0029] At least one exhaust hole 13 is provided on the circumferential outer side surface 1 of the plunger 1, and the exhaust hole 13 is connected to the first accommodating chamber 14. In this way, when the pressure inside the cooler is too high, the plunger 1 is partially pushed open by the internal pressure, and a part of the internal force inside the cooler is released through the exhaust hole 13, thereby achieving better pressure relief.

[0030] The novel plunger-type bypass valve provided in the present application has a simple structure, a stable and reliable process, a low cost, does not produce abnormal noise during use, and has a good pressure relief effect.

[0031] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A new type of plunger bypass valve, characterized in that: It includes a plunger, a spring and a screw plug. The spring has two ends. The plunger is detachably fixedly connected to one end of the spring, and the screw plug is detachably fixedly connected to the other end of the spring. The plunger is a cylindrical structure with a circular cross section.

2. The novel plunger-type bypass valve according to claim 1 is characterized in that: The plunger includes a circumferential outer side surface and a top surface. The circumferential outer side surface forms a cylindrical structure with openings at both ends along the circumference. The top surface and one end of the cylindrical structure formed by the circumferential outer side surface along the circumference are fixedly connected, so that the plunger has a first accommodating cavity, and the other end of the plunger is sealed by the top surface.

3. The novel plunger-type bypass valve according to claim 2 is characterized in that: The top surface and the circumferential outer side surface are integrally formed.

4. The novel plunger-type bypass valve according to claim 3 is characterized in that: The inner diameter of the first accommodating cavity of the plunger is larger than the outer diameter of the spring, and one end of the spring is placed in the first accommodating cavity, so that the plunger and the spring are detachably fixedly connected together.

5. The novel plunger-type bypass valve according to claim 4 is characterized in that: The screw plug includes a shell connecting section, which has a second accommodating chamber and a bottom. The shell connecting section is a cylindrical structure. The second accommodating chamber is arranged at one end of the cylindrical structure, and the bottom is arranged at the other end of the cylindrical structure. The bottom seals one end of the second accommodating chamber, so that the other end of the spring is placed in the second accommodating chamber and is supported by the bottom, and the bottom plays a limiting role.

6. The novel plunger-type bypass valve according to claim 5 is characterized in that: The outer surface of the shell connecting section of the screw plug is provided with threads.

7. The novel plunger-type bypass valve according to claim 6 is characterized in that: The screw plug also includes a limiting section, which is a cylindrical structure and is fixedly connected to the shell connecting section.

8. The novel plunger-type bypass valve according to claim 7 is characterized in that: The outer diameter of the limiting section is greater than the outer diameter of the shell connecting section, and the screw plug is integrally formed.

9. The novel plunger-type bypass valve according to claim 8 is characterized in that: The limiting section is provided with a hexagonal inner hole, and the hexagonal inner hole is recessed inwardly from the limiting section along the axis direction of the limiting section to a preset depth.

10. The novel plunger-type bypass valve according to claim 9 is characterized in that: At least one exhaust hole is disposed on the circumferential outer surface of the plunger, and the exhaust hole is communicated with the first accommodating chamber.

Images