Pressure relief device of automobile oil pump

Abstract

The utility model relates to the technical field of oil pump pressure relief, in particular to a pressure relief device of an automobile oil pump, which comprises a main body mechanism and a plugging mechanism, the plugging mechanism is positioned inside the bottom end of the main body mechanism, the main body mechanism comprises a valve body, a nut is fixedly mounted on the upper side of the valve body, and a bump is fixedly mounted on the lower side of the valve body. A screw cylinder is fixedly installed at the bottom end of the valve body, an oil outlet hole is formed in the right end of the screw cylinder, first screw teeth are fixedly installed on the outer side of the screw cylinder, a first sealing ring is fixedly installed at the top end of the screw cylinder, and a second sealing ring is fixedly installed at the bottom end of the screw cylinder. The telescopic block retracts in the telescopic groove to drive the first telescopic rod and the piston to retract again, the pressure of the second spring is reduced, the space of the pressure reduction bin can be increased by retracting the telescopic block in the telescopic groove, and therefore the overlarge oil pressure is rapidly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pump pressure relief, in particular to a pressure relief device for an automobile oil pump. Background Art

[0002] The function of the oil pump is to increase the oil to a certain pressure and then forcibly press it onto the moving surfaces of various engine parts. The structural forms of oil pumps can be divided into two types: gear type and rotor type. Gear oil pumps are further divided into internal gear type and external gear type. The latter is generally called gear oil pump. When the oil pump is working, the oil pressure inside the oil pump may be too high. Excessive oil pressure will affect the mechanical movement of the vehicle and cause damage. Therefore, a pressure relief device for the automobile oil pump is required to reduce its internal oil pressure when the oil pressure is too high.

[0003] As disclosed in the authorization announcement number CN217421511U, a pressure relief device for an automobile oil pump is disclosed, including a cooling chamber, a pressure relief chamber is provided on the top of the cooling chamber, a reflux chamber is provided at the bottom of the cooling chamber, a cooling chamber is provided on the right side of the cooling chamber, a heat pipe is provided inside the cooling chamber, and a pressure relief door is provided at the liquid inlet of the pressure relief chamber. Compared with the existing automobile oil pump pressure relief device, the utility model can improve the overall convenience, adjustability and practicality of the automobile oil pump pressure relief device through design.

[0004] However, the existing pressure relief devices all use a single spring to drive the piston to rebound and close the device after the oil pressure is released. Therefore, the spring will be damaged after long-term use. At the same time, when the oil pressure is too high, the oil will quickly push into the device, causing damage to the internal components of the device, resulting in the need for vehicle repairs. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure relief device for an automobile oil pump to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A pressure relief device for an automobile oil pump comprises a main body mechanism and a blocking mechanism, wherein the blocking mechanism is located inside the bottom end of the main body mechanism. The main body mechanism comprises a valve body, a nut is fixedly mounted on the upper side of the valve body, a bump is fixedly mounted on the lower side of the valve body, a screw barrel is fixedly mounted on the bottom end of the valve body, an oil outlet hole is opened at the right end of the screw barrel, a first thread is fixedly mounted on the outer side of the screw barrel, a first sealing ring is fixedly mounted on the top end of the screw barrel, and a second sealing ring is fixedly mounted on the bottom end of the screw barrel.

[0008] Preferably, the main body mechanism further comprises a valve chamber, a decompression chamber is provided in the middle of the valve chamber, a telescopic groove is provided at the top end of the valve chamber, and a first telescopic hole is provided at the top end of the telescopic groove.

[0009] Preferably, a first telescopic rod is movably installed in the first telescopic hole, and a first spring is movably installed on the outside of the first telescopic rod.

[0010] Preferably, a telescopic block is fixedly mounted on the bottom end of the first telescopic rod, the telescopic block is movably mounted in the telescopic slot, and a second telescopic hole is formed at the bottom end of the telescopic block.

[0011] Preferably, a second telescopic rod is movably installed in the second telescopic hole, a second spring is movably installed on the outer side of the second telescopic rod, and a piston is fixedly installed at the bottom end of the second telescopic rod.

[0012] Preferably, the blocking mechanism includes a blocking block, an oil inlet hole is opened on the lower side of the blocking block, a second screw thread is fixedly mounted on the outer side of the blocking block, and the second screw thread is movably mounted inside the screw barrel.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The pressure relief device of an automobile oil pump is configured such that when the oil pressure is too high, the piston is pushed to contract and the second spring is compressed. The first telescopic rod contracts in the first telescopic hole, causing the telescopic block to contract in the telescopic groove, driving the first telescopic rod and the piston to contract again, thereby reducing the pressure on the second spring and increasing the service life of the second spring.

[0015] The pressure relief device of an automobile oil pump can increase the space of the pressure relief chamber by contracting the telescopic block in the telescopic groove, thereby quickly reducing excessive oil pressure, thereby avoiding damage to internal components caused by excessive oil pressure and the need for vehicle repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the main body of the utility model;

[0018] Figure 3 This is a structural diagram of the blocking mechanism of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall planar structure of the utility model.

[0020] In the figure: 101, main body; 102, sealing mechanism; 103, valve body; 104, nut; 105, bump; 106, screw barrel; 201, oil outlet hole; 202, first screw thread; 203, first sealing ring; 204, second sealing ring; 205, valve chamber; 206, pressure relief chamber; 301, telescopic groove; 302, first telescopic hole; 303, first telescopic rod; 304, first spring; 305, telescopic block; 306, second telescopic hole; 401, second telescopic rod; 402, second spring; 403, piston; 404, sealing block; 405, oil inlet hole; 406, second screw thread. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-4 As shown, the utility model provides a technical solution:

[0023] A pressure relief device for an automobile oil pump includes a main body mechanism 101 and a sealing mechanism 102. The sealing mechanism 102 is located inside the bottom end of the main body mechanism 101. The main body mechanism 101 includes a valve body 103. A nut 104 is fixedly mounted on the upper side of the valve body 103, a bump 105 is fixedly mounted on the lower side of the valve body 103, a screw barrel 106 is fixedly mounted on the bottom end of the valve body 103, an oil outlet hole 201 is opened at the right end of the screw barrel 106, a first screw thread 202 is fixedly mounted on the outer side of the screw barrel 106, a first sealing ring 203 is fixedly mounted on the top end of the screw barrel 106, and a second sealing ring 204 is fixedly mounted on the bottom end of the screw barrel 106.

[0024] Through the above scheme, the valve body can be tightened by a tool through the nut, the screw barrel and the valve body can be connected and fixed to the oil pump through the first thread, the internal space of the valve body can be enlarged through the protrusion, the oil inside the valve body can be discharged through the oil outlet hole, the sealing of the connection between the device and the oil pump can be ensured through the first sealing ring, and the oil outlet hole and the oil inlet hole can be isolated through the second sealing ring.

[0025] In this embodiment, preferably, the main body mechanism 101 further includes a valve chamber 205 , a decompression chamber 206 is provided in the middle of the valve chamber 205 , a telescopic groove 301 is provided at the top of the valve chamber 205 , and a first telescopic hole 302 is provided at the top of the telescopic groove 301 .

[0026] Through the above solution, the components can be installed through the valve chamber, the oil can be allowed to enter through the decompression chamber to reduce the pressure, and the first telescopic rod can be installed through the first telescopic hole.

[0027] In this embodiment, preferably, a first telescopic rod 303 is movably installed in the first telescopic hole 302 , and a first spring 304 is movably installed on the outer side of the first telescopic rod 303 .

[0028] According to the above solution, the first telescopic rod can be extended and retracted in the first telescopic hole to drive the first spring to contract, and the contraction of the spring will generate a rebound force to drive the first telescopic rod to reset again.

[0029] In this embodiment, preferably, a telescopic block 305 is fixedly installed at the bottom end of the first telescopic rod 303 , and the telescopic block 305 is movably installed in the telescopic slot 301 . A second telescopic hole 306 is opened at the bottom end of the telescopic block 305 .

[0030] According to the above solution, the internal space of the decompression chamber can be enlarged by the expansion and contraction of the expansion block in the expansion slot, thereby increasing the pressure relief capacity.

[0031] In this embodiment, preferably, a second telescopic rod 401 is movably installed in the second telescopic hole 306 , a second spring 402 is movably installed on the outer side of the second telescopic rod 401 , and a piston 403 is fixedly installed at the bottom end of the second telescopic rod 401 .

[0032] With the above solution, the piston can be driven to extend and retract to complete opening and closing by extending and retracting the second telescopic rod in the second telescopic hole. At the same time, the extension and retraction causes the spring to complete contraction and rebound and the piston to automatically close.

[0033] In this embodiment, preferably, the blocking mechanism 102 includes a blocking block 404 , an oil inlet hole 405 is opened on the lower side of the blocking block 404 , a second screw thread 406 is fixedly installed on the outer side of the blocking block 404 , and the second screw thread 406 is movably installed inside the screw barrel 106 .

[0034] Through the above solution, the bottom end of the valve body can be sealed by the sealing block, the oil can be allowed to enter through the oil inlet hole when the oil pressure increases, and the sealing block and the screw barrel can be installed through the second thread.

[0035] When using the pressure relief device of an automobile oil pump of this embodiment, the user passes the telescopic block 305 through the screw barrel 106 and connects it to the telescopic groove 301, and connects the first telescopic rod 303 to the first telescopic hole 302, then installs the second telescopic rod 401 in the second telescopic hole 306 so that the piston 403 is placed inside the valve chamber 205, and finally connects the blocking block 404 to the screw barrel 106 through the second screw thread 406 so that the piston 403 and the top of the blocking block 404 are engaged to complete the assembly. After the assembly is completed, the user screws the screw barrel 106 and the oil pump through the first screw thread 202 and uses a tool to tighten the screw barrel 106 together with the valve body 103 through the nut. After tightening, the first sealing ring 203 ensures the sealing between the device and the oil pump, and the second sealing ring 204 ensures the oil inlet hole 40 5 and the oil outlet hole 201 will not be connected. When the oil pressure of the oil pump increases, the oil enters the sealing block 404 through the oil inlet hole 405 to increase the internal pressure. The oil pressure pushes the piston 403 to make the second telescopic rod 401 contract in the second telescopic hole 306, thereby creating a gap between the piston 403 and the sealing block 404, and then the oil enters the valve chamber 205 and quickly fills the decompression chamber 206. The oil in the oil pump decreases and the oil pressure drops. At this time, the rebound force of the second spring 402 is greater than the oil pressure, causing the piston 403 to rebound and block the opening of the sealing block 404 again to isolate the oil. At the same time, the oil in the decompression chamber 206 is discharged back to the oil pump through the oil outlet hole 201. After the oil pressure is reduced, the first spring 304 and the second spring 402 rebound to reset the telescopic block 305 and the piston 403.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief device for an automobile oil pump, characterized in that: The invention comprises a main body mechanism (101) and a blocking mechanism (102), wherein the blocking mechanism (102) is located inside the bottom end of the main body mechanism (101), and the main body mechanism (101) comprises a valve body (103), a nut (104) is fixedly mounted on the upper side of the valve body (103), a bump (105) is fixedly mounted on the lower side of the valve body (103), a screw barrel (106) is fixedly mounted on the bottom end of the valve body (103), an oil outlet hole (201) is provided at the right end of the screw barrel (106), a first screw thread (202) is fixedly mounted on the outer side of the screw barrel (106), a first sealing ring (203) is fixedly mounted on the top end of the screw barrel (106), and a second sealing ring (204) is fixedly mounted on the bottom end of the screw barrel (106).

2. The pressure relief device for an automobile oil pump according to claim 1, characterized in that: The main body mechanism (101) further comprises a valve chamber (205), a decompression chamber (206) is provided in the middle of the valve chamber (205), a telescopic groove (301) is provided at the top end of the valve chamber (205), and a first telescopic hole (302) is provided at the top end of the telescopic groove (301).

3. The pressure relief device for an automobile oil pump according to claim 2, characterized in that: A first telescopic rod (303) is movably installed in the first telescopic hole (302), and a first spring (304) is movably installed outside the first telescopic rod (303).

4. The pressure relief device for an automobile oil pump according to claim 3, characterized in that: A telescopic block (305) is fixedly mounted on the bottom end of the first telescopic rod (303), and the telescopic block (305) is movably mounted in the telescopic slot (301). A second telescopic hole (306) is provided at the bottom end of the telescopic block (305).

5. The pressure relief device for an automobile oil pump according to claim 4, characterized in that: A second telescopic rod (401) is movably installed in the second telescopic hole (306), a second spring (402) is movably installed outside the second telescopic rod (401), and a piston (403) is fixedly installed at the bottom end of the second telescopic rod (401).

6. The pressure relief device for an automobile oil pump according to claim 1, characterized in that: The blocking mechanism (102) comprises a blocking block (404), an oil inlet hole (405) is provided on the lower side of the blocking block (404), a second screw thread (406) is fixedly mounted on the outer side of the blocking block (404), and the second screw thread (406) is movably mounted inside the screw barrel (106).

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