Engine oil pump cover with pressure reduction protection structure

Abstract

The utility model discloses an engine oil pump cover with a pressure reduction protection structure, which comprises an oil pump shell and an oil pump top cover arranged above the oil pump shell, a fixing bolt is arranged at the edge position of the oil pump top cover in a penetrating way, and the fixing bolt corresponds to the position of a mounting hole arranged at the edge position of the oil pump shell. An oil way pipeline used for flowing of engine oil is fixedly installed on the lower surface of the engine oil pump shell, a pressure reduction box of a hollow structure is fixedly installed on the upper surface of the engine oil pump top cover, a partition plate is fixedly installed in the pressure reduction box, and a sealing block moving up and down is installed at the position of a hole in the partition plate. The pressure reduction box is fixedly installed on the upper surface of the oil pump top cover, when the pressure of the oil pump shell is too large, the sealing block in the pressure reduction box is pushed to move upwards under the pressure effect, at the moment, oil can enter the pressure reduction box, and therefore the pressure in the oil pump shell is reduced, and the protection purpose is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pump covers, in particular to an engine oil pump cover with a decompression protection structure. Background Art

[0002] The oil pump is an important component inside the engine. It is responsible for pumping oil from the oil pan to various lubrication points of the engine to ensure lubrication and cooling during normal operation of the engine. The top of the oil pump needs to be sealed with an oil pump cover to avoid oil leakage during use.

[0003] In the prior art, a Chinese patent with authorization announcement number CN216589072U discloses an engine oil pump cover, including a pump cover body, a mounting boss is provided on the lower end surface of the pump cover body, a sealing ring is provided on the outer wall of the mounting boss, and a vertically movable sealing gasket is provided at the lower end of the pump cover body; a driving member is provided at the upper end of the pump cover body, and a plurality of connecting bolts are movably penetrated on the driving member, the lower end threads of the connecting bolts are engaged with the pump cover body, and the lower ends of the connecting bolts are penetrated from the pump cover body; an elastic element is provided between the lower end surface of the driving member and the upper end surface of the pump cover body, so that the driving member always has a tendency to move in a direction away from the pump cover body; when the lower ends of the plurality of connecting bolts are engaged with the pump body threads until the lower end surface of the pump cover body contacts the pump body, when the connecting bolts are continuously screwed, the driving member moves downward to drive the sealing gasket to move downward, and has a double sealing structure, which effectively ensures the sealing of the connection between the oil pump cover and the oil pump.

[0004] The above-mentioned device utilizes sealing rings and sealing gaskets to achieve the purpose of double sealing. However, in actual use, the oil pump needs to be connected to the crankshaft of the engine, and the engine crankshaft is used to drive the oil pump to operate. When the engine rotates at a faster speed, the oil pump operates faster while the diameter of the oil pipeline remains unchanged, so the internal oil pressure will increase. Excessive pressure will cause damage to the oil pump. Utility Model Content

[0005] The utility model aims to provide an engine oil pump cover with a decompression protection structure to solve the problem of being unable to provide decompression protection in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: an engine oil pump cover with a decompression protection structure, comprising an oil pump housing and an oil pump top cover installed above the oil pump housing, and also comprising:

[0007] A fixing bolt is installed through the edge of the oil pump top cover, and the fixing bolt corresponds to the mounting hole opened at the edge of the oil pump housing;

[0008] An oil pipeline for oil flow is fixedly installed on the lower surface of the oil pump housing, and a hollow pressure reducing box is fixedly installed on the upper surface of the oil pump top cover, and a partition plate is fixedly installed inside the pressure reducing box, and a sealing block that can move up and down is installed at the hole position inside the partition plate, and an adjusting mechanism for changing its movable pressure is arranged above the sealing block.

[0009] Preferably, the adjustment mechanism comprises a permanent magnet fixedly mounted on the upper surface of the sealing block, and the outer side of the sealing block comprises a rubber pad.

[0010] Preferably, a return spring is fixedly installed between the upper surface of the sealing block and the top of the interior of the decompression box, and an electromagnet is fixedly installed at the middle position of the top of the interior of the decompression box.

[0011] Preferably, the position of the electromagnet corresponds to that of the permanent magnet in vertical correspondence, and the electromagnet and the permanent magnet have opposite magnetic properties and repel each other.

[0012] Preferably, a current controller is fixedly mounted on the upper surface of the decompression box, and the current controller is electrically connected to the electromagnet and changes the current size.

[0013] Preferably, a return pipe is fixedly installed on the top of the pressure reducing box, and the bottom end of the return pipe is connected with the oil pipeline, and a one-way valve is fixedly installed on the outside of the lower end of the return pipe.

[0014] Preferably, a sealing ring that fits with the oil pump housing is fixedly installed on the lower surface of the oil pump top cover, and evenly distributed reinforcing ribs are fixedly installed inside the lower surface of the oil pump top cover.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the engine oil pump cover with a decompression protection structure adopts a new structural design, and its specific contents are as follows:

[0016] 1. Use the fixing bolts and mounting holes to fix the oil pump cover to the oil pump housing. At this time, use the sealing ring on the lower surface of the oil pump cover to ensure its sealing effect. At the same time, the reinforcing ribs inside the lower surface of the oil pump cover can improve its strength.

[0017] Furthermore, a pressure reducing box is fixedly installed on the upper surface of the oil pump top cover. When the pressure of the oil pump housing is too high, the sealing block inside the pressure reducing box is pushed upward under the action of the pressure, and finally the sealing block is separated from the contact between the partition plate. At this time, the oil can enter the pressure reducing box, thereby reducing the pressure inside the oil pump housing and achieving the purpose of protection.

[0018] Furthermore, the current in the contact electromagnet is changed by a current controller, thereby changing the magnetic force of the electromagnet, so that different repulsive forces are generated between the electromagnet and the permanent magnet, thereby adjusting the downward pressure of the sealing block to cope with different usage conditions.

[0019] 2. The engine oil flowing into the pressure reducing box flows into the oil pipeline through the return pipe to avoid oil waste, and a one-way valve is set at the bottom of the return pipe to prevent the engine oil in the oil pipeline from entering the return pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the oil pump top cover of the utility model in an open state;

[0022] Figure 3 This is a schematic diagram of the bottom surface structure of the oil pump top cover of the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the decompression box of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the position relationship between the partition plate and the sealing block of the utility model;

[0025] Figure 6 This is a schematic diagram of the sealing block structure of the utility model.

[0026] In the figure: 1. Oil pump housing; 2. Oil pump top cover; 3. Fixing bolts; 4. Mounting hole; 5. Oil pipeline; 6. Pressure reducing box; 7. Return pipe; 8. One-way valve; 9. Partition plate; 10. Sealing block; 11. Rubber pad; 12. Return spring; 13. Permanent magnet; 14. Electromagnet; 15. Current controller; 16. Sealing ring; 17. Reinforcing rib. DETAILED DESCRIPTION

[0027] 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.

[0028] Example 1: Please refer to Figure 1 and Figure 4In order to solve the problem that the traditional device cannot reduce pressure during use and is damaged, the present embodiment provides the following technical solutions, which specifically disclose: an oil pump housing 1 and an oil pump top cover 2 installed above the oil pump housing 1, an oil pipeline 5 for oil flow is fixedly installed on the lower surface of the oil pump housing 1, and a pressure reducing box 6 which is connected with the oil pump housing 1 and has a hollow structure is fixedly installed on the upper surface of the oil pump top cover 2, and a partition plate 9 is fixedly installed inside the pressure reducing box 6, and a sealing block 10 which moves up and down is installed at the hole position inside the partition plate 9, a return pipe 7 is fixedly installed above the pressure reducing box 6, and the bottom end of the return pipe 7 is connected with the oil pipeline 5, and a one-way valve 8 is fixedly installed on the outside of the lower end of the return pipe 7.

[0029] When the device is in use, the device is installed as a whole in the engine and connected to the crankshaft of the engine. When the engine is turned on, the crankshaft drives the gears in the oil pump housing 1 to rotate, thereby pumping the oil into the oil pipeline 5 for circulation, thereby lubricating various components in the engine. When the pressure inside the oil pump housing 1 is too high (such as due to excessive crankshaft speed, etc.), the sealing block 10 inside the pressure relief box 6 is pushed upward under the action of pressure, and finally the sealing block 10 is separated from the contact with the partition plate 9. At this time, the oil passes through the hole in the middle of the partition plate 9 and enters the inside of the pressure relief box 6. The entered oil enters the oil pipeline 5 again through the return pipe 7 for circulation. In this process, the pressure inside the oil pump housing 1 is reduced, thereby avoiding long-term excessive pressure from causing damage to the oil pump housing 1 and the oil pump top cover 2.

[0030] Example 2: Please refer to Figure 4-Figure 6 In order to adapt to different use pressures, this embodiment provides the following technical solutions, which specifically disclose: an adjustment mechanism for changing the active pressure of the sealing block 10 is arranged above the sealing block 10, the adjustment mechanism includes a permanent magnet 13 fixedly mounted on the upper surface of the sealing block 10, and the outer side of the sealing block 10 includes a rubber pad 11, a reset spring 12 is fixedly mounted between the upper surface of the sealing block 10 and the top of the inner part of the pressure reducing box 6, and an electromagnet 14 is fixedly mounted at the middle position of the top of the inner part of the pressure reducing box 6, the position of the electromagnet 14 corresponds to the position of the permanent magnet 13 up and down, and the magnetism of the electromagnet 14 and the permanent magnet 13 is opposite and repel each other, and a current controller 15 is fixedly mounted on the upper surface of the pressure reducing box 6, and the current controller 15 is electrically connected with the electromagnet 14 to change the current size.

[0031] In the face of different usage conditions (such as an oil pump housing 1 that can withstand different pressures or specific engine requirements), the current controller 15 is controlled by an electrical signal, so that the current connected to the electromagnet 14 is changed through the current controller 15. At this time, the magnetic force of the electromagnet 14 changes, thereby changing the repulsive force between the electromagnet 14 and the permanent magnet 13, and finally adjusting the force required to push the sealing block 10 upward, thereby achieving the purpose of adjusting the internal pressure threshold of the oil pump housing 1.

[0032] Example 3: Please refer to Figure 2 and Figure 3 The present embodiment provides the following technical solution, which specifically discloses that: a fixing bolt 3 is installed through the edge of the oil pump top cover 2, and the fixing bolt 3 corresponds to the mounting hole 4 opened at the edge of the oil pump housing 1, a sealing ring 16 that fits the oil pump housing 1 is fixedly installed on the lower surface of the oil pump top cover 2, and evenly distributed reinforcing ribs 17 are fixedly installed inside the lower surface of the oil pump top cover 2.

[0033] When installing the device, first pass the fixing bolt 3 through the edge of the oil pump top cover 2, and then use the cooperation between the fixing bolt 3 and the mounting hole 4 to fix the oil pump top cover 2 and the oil pump housing 1. At this time, the sealing ring 16 on the lower surface of the oil pump top cover 2 is used to achieve a sealing effect. At the same time, the reinforcing rib 17 on the inner side of the lower surface of the oil pump top cover 2 improves its overall strength so that it can withstand greater pressure.

[0034] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] 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. An engine oil pump cover with a decompression protection structure, comprising an oil pump housing (1) and an oil pump top cover (2) mounted above the oil pump housing (1), characterized in that: Also includes: A fixing bolt (3) is installed through the edge of the oil pump top cover (2), and the fixing bolt (3) corresponds to a mounting hole (4) provided at the edge of the oil pump housing (1); An oil pipeline (5) for oil flow is fixedly mounted on the lower surface of the oil pump housing (1), and a hollow pressure relief box (6) in communication with the oil pump top cover (2) is fixedly mounted on the upper surface of the oil pump top cover (2), a partition plate (9) is fixedly mounted inside the pressure relief box (6), and a sealing block (10) movable up and down is mounted at a hole position inside the partition plate (9), and an adjustment mechanism for changing its movable pressure is arranged above the sealing block (10).

2. The engine oil pump cover with a decompression protection structure according to claim 1, characterized in that: The adjustment mechanism comprises a permanent magnet (13) fixedly mounted on the upper surface of the sealing block (10), and the outer side of the sealing block (10) comprises a rubber pad (11).

3. The engine oil pump cover with a decompression protection structure according to claim 2, characterized in that: A return spring (12) is fixedly mounted between the upper surface of the sealing block (10) and the top end of the interior of the pressure reducing box (6), and an electromagnet (14) is fixedly mounted at the middle position of the top end of the interior of the pressure reducing box (6).

4. The engine oil pump cover with a decompression protection structure according to claim 3, characterized in that: The position of the electromagnet (14) corresponds to the position of the permanent magnet (13) in the vertical direction, and the electromagnet (14) and the permanent magnet (13) have opposite magnetic properties and repel each other.

5. The engine oil pump cover with a decompression protection structure according to claim 4, characterized in that: A current controller (15) is fixedly mounted on the upper surface of the pressure reducing box (6), and the current controller (15) is electrically connected to the electromagnet (14) to change the magnitude of the current.

6. The engine oil pump cover with a decompression protection structure according to claim 5, characterized in that: A return pipe (7) is fixedly installed on the top of the pressure reducing box (6) and penetrates through it. The bottom end of the return pipe (7) is connected to the oil pipeline (5), and a check valve (8) is fixedly installed on the outside of the lower end of the return pipe (7).

7. The engine oil pump cover with a decompression protection structure according to claim 1, characterized in that: A sealing ring (16) that fits the oil pump housing (1) is fixedly mounted on the lower surface of the oil pump top cover (2), and evenly distributed reinforcing ribs (17) are fixedly mounted inside the lower surface of the oil pump top cover (2).

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