Oil pump with pressure release valve assembly

Abstract

The utility model relates to the technical field of oil pumps, in particular to an oil pump with a pressure release valve component, which comprises a pump body mechanism, one end of the pump body mechanism is fixedly connected with an electric device, one side of the pump body mechanism is fixedly connected with a pressure release valve device, an oil inlet mechanism is arranged at the top of the pump body mechanism, and an oil outlet mechanism is arranged at the bottom of a pump body. The pump body mechanism comprises a pump cover, a driving gear, a driven gear, a main rotating shaft and a driven rotating shaft, the main rotating shaft is fixedly connected inside the pump body, the driving gear is rotatably connected to the circle center of the main rotating shaft, the driven rotating shaft is fixedly connected inside the pump body and located on the upper side of the main rotating shaft, and the driven gear is rotatably connected to the circle center of the driven rotating shaft. According to the oil pump with the pressure release valve assembly, a pressure release valve device comprises a mechanical shaft seal, a movable plate, a spring, a steel ball, an upper valve body and a lower valve body, the top of the upper valve body is fixedly connected with the mechanical shaft seal, the mechanical shaft seal is connected with the movable plate in a sliding mode, and the bottom of the movable plate is fixedly connected with the spring.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumps, in particular to an oil pump with a pressure relief valve assembly. Background Art

[0002] The oil pump is an important component of the engine lubrication system. It is used to increase the oil pressure and ensure a certain amount of oil, and to force oil to be supplied to each friction surface. Gear and rotor oil pumps are widely used in internal combustion engines. The gear oil pump has a simple structure, convenient processing, reliable operation, long service life, and high oil pumping pressure. It is widely used. The rotor of the rotor pump is complex and is mostly pressed by powder metallurgy. This pump has the same advantages as the gear pump, but with a compact structure and small size.

[0003] The utility model disclosed in the Chinese utility model patent application disclosure CN204664835U discloses an oil pump; the technical problem solved is: for the conventional oil pump in the prior art, due to the poor comprehensiveness of lubrication in the oil pump, it is easy to cause damage to the machine parts and malfunction; at the same time, the valve opening pressure of various existing oil pumps is not controlled. The technical solution adopted is: an oil pump, including a pump body, an inner rotor, an outer rotor, a pump cover, a pump shaft, an oil pump gear and a sleeve. Advantages: a high-pressure balance cavity is opened on the bottom surface of the pump body rotor cavity of this oil pump, which plays a role in lubricating the pump body shaft hole, and at the same time generates a reverse force to reduce rotor wear and improve the stability of the oil pump. A pump cover positioning shaft is provided on the pump cover of this oil pump, and it is concentric with the pump shaft hole. After positioning, the positioning accuracy of the gear will not be affected by the installation error of the oil pump. A safety valve is provided on the pump body of this oil pump. By setting the opening pressure of the safety valve, the burst of the engine oil pipe and the eccentric wear of the oil pump shaft caused by the excessive pressure of the oil pump are eliminated.

[0004] However, the device lacks a pressure relief device, which will cause the pressure inside the machine to exist all the time. If the machine is suddenly turned on, the pressure may be suddenly released, causing a safety accident and harm to the operator. The device is not equipped with a motor fixing device. During the production process, the equipment vibrates and displaces, and generates noise. The noise will be transmitted to the outside through the structure of the machine, affecting the working environment and personnel around the equipment. Utility Model Content

[0005] The utility model aims to provide an oil pump with a pressure relief valve assembly to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An oil pump with a pressure relief valve assembly comprises a pump body mechanism, one end of the pump body mechanism is fixedly connected to an electric device, one side of the pump body mechanism is fixedly connected to a pressure relief valve device, an oil inlet mechanism is provided at the top of the pump body mechanism, and an oil outlet mechanism is provided at the bottom of the pump body so as to forcibly pressurize the oil onto the moving surfaces of various parts of the engine, thereby achieving the effect of uniform oil speed and smooth movement.

[0008] Preferably, the pump body mechanism includes a pump cover, a driving gear, a driven gear, a main rotating shaft and a driven rotating shaft. The main rotating shaft is fixedly connected inside the pump body, and the driving gear is rotatably connected to the center of the main rotating shaft. The driven rotating shaft is fixedly connected inside the pump body and located on the upper side of the main rotating shaft, and the driven gear is rotatably connected to the center of the driven rotating shaft, so that the engine oil is continuously pressed to the required position.

[0009] Preferably, the electric device includes a motor, a support and a switch, one end of the pump body is fixedly connected to a shaft seal seat, the other end of the shaft seal seat is fixedly connected to the motor, one side of the motor is fixedly connected to a switch, and the bottom of the motor is fixedly connected to a support, so that the oil pump is driven by rotation to suck oil from the oil sump.

[0010] Preferably, the pressure relief valve device includes a mechanical shaft seal, a movable plate, a spring, a steel ball, an upper valve body and a lower valve body. The top of the upper valve body is fixedly connected to the mechanical shaft seal, the mechanical shaft seal is slidably connected to the movable plate, the bottom of the movable plate is fixedly connected to the spring, and a slot is opened inside the lower valve body, in which a steel ball is placed, thereby reducing the pressure of the engine oil and keeping the oil port sealed.

[0011] Preferably, the oil inlet mechanism includes an oil inlet chamber and an oil inlet port. The oil inlet chamber is opened on the top of the pump body, and the oil inlet port is fixedly connected to the top of the oil inlet chamber. The engine oil is filtered from the oil tank through the oil filter and then enters the fuel distribution pipe on the engine for temporary storage, thereby achieving sealing and avoiding contact with air.

[0012] Preferably, the oil outlet mechanism includes an oil outlet cavity and an oil outlet port. The bottom of the pump body is provided with an oil outlet cavity, and the top of the oil outlet cavity is fixedly connected with an oil outlet port to deliver the engine oil to the surfaces of various engine parts.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. An oil pump with a pressure relief valve assembly, the pressure relief valve device includes a mechanical shaft seal, a movable plate, a spring, a steel ball, an upper valve body and a lower valve body, the top of the upper valve body is fixedly connected with a mechanical shaft seal, the mechanical shaft seal is slidably connected with a movable plate, the bottom of the movable plate is fixedly connected with a spring, a card slot is opened inside the lower valve body, a steel ball is placed in the card slot, through the arrangement of the mechanical shaft seal, the movable plate, the spring, the steel ball, the upper valve body and the lower valve body, when in use, the steel ball seals the oil port under the action of the spring, when the oil pressure is greater than the maximum value, the steel ball overcomes the spring elastic force to push out of the movable plate, open the oil port, thereby reducing the pressure of the engine oil.

[0015] 2. This oil pump with a pressure relief valve assembly, the electric device includes a motor, a support and a switch, one end of the pump body is fixedly connected to a shaft seal seat, the other end of the shaft seal seat is fixedly connected to the motor, one side of the motor is fixedly connected to a switch, and the bottom of the motor is fixedly connected to a support. Through the motor, the support and the switch, when in use, the operator controls the motor switch, and the motor oil pump is driven by rotation to suck oil from the oil pan. The support is used to fix the motor and other equipment to prevent the motor from vibrating, thereby enhancing the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic top view of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembly of the pressure relief valve device of the utility model;

[0019] Figure 4 It is a perspective view of the pump body mechanism of the present utility model.

[0020] In the figure: 11, pump cover; 12, driving gear; 13, driven gear; 14, main shaft; 15, driven shaft; 21, motor; 22, support; 23, switch; 31, mechanical oil seal; 32, movable plate; 33, spring; 34, steel ball; 35, upper valve body; 36, lower valve body; 41, oil inlet chamber; 42, oil inlet port; 43, oil outlet chamber; 44, oil outlet port. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0023] An oil pump with a pressure relief valve assembly includes a pump body mechanism, one end of the pump body mechanism is fixedly connected to an electric device, one side of the pump body mechanism is fixedly connected to a pressure relief valve device, an oil inlet mechanism is provided on the top of the pump body mechanism, and an oil outlet mechanism is provided on the bottom of the pump body. Through the arrangement of the pump body mechanism, the electric device, the pressure relief valve device, the oil inlet mechanism and the oil outlet mechanism, when in use, an operator injects oil through the oil inlet port 42, starts the motor 21 switch 23, and after the oil is increased to a certain pressure, the oil outlet port 44 discharges the oil, thereby forcibly pressing the oil onto the moving surfaces of various parts of the engine, achieving the effect of uniform oil speed and smooth movement.

[0024] In this embodiment, preferably, the pump body mechanism includes a pump cover 11, a driving gear 12, a driven gear 13, a main rotating shaft 14 and a driven rotating shaft 15. The main rotating shaft 14 is fixedly connected inside the pump body, and the driving gear 12 is rotatably connected to the center of the main rotating shaft 14. The driven rotating shaft 15 is fixedly connected to the pump body and located on the upper side of the main rotating shaft 14. The driven rotating shaft 15 is rotatably connected to the center of the driven rotating shaft 15. Through the arrangement of the pump cover 11, the driving gear 12, the driven gear 13, the main rotating shaft 14 and the driven rotating shaft 15, when in use, the driving gear 12 drives the driven gear 13 to rotate, and the engine oil is sent from the oil inlet chamber 41 to the oil outlet chamber 43 along the tooth gap and the pump wall, and a low pressure is formed at the oil inlet chamber 41 to generate suction, and the engine oil in the oil pan is sucked into the oil chamber 41. As the main and driven gears 13 rotate continuously, the engine oil is continuously pressed and sent to the required position.

[0025] In this embodiment, preferably, the electric device includes a motor 21, a support 22 and a switch 23, one end of the pump body is fixedly connected to a shaft seal seat, the other end of the shaft seal seat is fixedly connected to the motor 21, one side of the motor 21 is fixedly connected to the switch 23, and the bottom of the motor 21 is fixedly connected to the support 22. Through the motor 21, the support 22 and the switch 23, when in use, the operator controls the motor 21 switch 23, and the motor 21 oil pump is driven by rotation to suck oil from the oil sump.

[0026] In the present embodiment, preferably, the pressure relief valve device includes a mechanical shaft seal, a movable plate 32, a spring 33, a steel ball 34, an upper valve body 35 and a lower valve body 36, the top of the upper valve body 35 is fixedly connected to the mechanical shaft seal, the mechanical shaft seal is slidably connected to the movable plate 32, the bottom of the movable plate 32 is fixedly connected to the spring 33, and a slot is provided inside the lower valve body 36, in which a steel ball 34 is placed, through the arrangement of the mechanical shaft seal, the movable plate 32, the spring 33, the steel ball 34, the upper valve body 35 and the lower valve body 36, when in use, the steel ball 34 seals the oil port under the action of the spring 33, and when the oil pressure is greater than the maximum value, the steel ball 34 overcomes the elastic force of the spring 33 to push out the movable plate 32, open the oil port, and thus reduce the pressure of the engine oil.

[0027] In the present embodiment, preferably, the oil inlet mechanism includes an oil inlet chamber 41 and an oil inlet port 42. The top of the pump body is provided with an oil inlet chamber 41, and the top of the oil inlet chamber 41 is fixedly connected with an oil inlet port 42. Through the arrangement of the oil inlet chamber 41 and the oil inlet port 42, when in use, the operator introduces the engine oil into the oil inlet chamber 41 through the oil inlet port 42, and the engine oil is filtered from the oil tank through the oil filter and then enters the fuel distribution pipe on the engine for temporary storage, thereby achieving sealing and avoiding contact with air.

[0028] In this embodiment, preferably, the oil outlet mechanism includes an oil outlet chamber 43 and an oil outlet port 44. The oil outlet chamber 43 is opened at the bottom of the pump body, and the top of the oil outlet chamber 43 is fixedly connected with the oil outlet port 44. Through the setting of the oil outlet chamber 43 and the oil outlet port 44, the engine oil is transported to the surfaces of various parts of the engine.

[0029] When the oil pump with a pressure relief valve assembly of the present embodiment is in use, through the arrangement of the pump body mechanism, the electric device, the pressure relief valve device, the oil inlet mechanism and the oil outlet mechanism, the operator injects the oil through the oil inlet port 42, starts the motor 21 switch 23, and after the oil pressure is increased to a certain level, the oil is discharged from the oil outlet 44, thereby forcibly pressing the oil to the moving surfaces of various parts of the engine. Through the arrangement of the mechanical shaft seal, the movable plate 32, the spring 33, the steel ball 34, the upper valve body 35 and the lower valve body 36, when in use, the steel ball 34 seals the oil port under the action of the spring 33. When the oil pressure is greater than the maximum value, the steel ball 34 overcomes the elastic force of the spring 33 and pushes out of the movable plate 32 to open the oil port, thereby reducing the pressure of the oil and achieving the effect of uniform oil speed and smooth movement.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An oil pump with a pressure relief valve assembly, characterized in that: It comprises a pump body mechanism, one end of the pump body mechanism is fixedly connected to an electric device, one side of the pump body mechanism is fixedly connected to a pressure relief valve device, the top of the pump body mechanism is provided with an oil inlet mechanism, and the bottom of the pump body is provided with an oil outlet mechanism; The electric device comprises a motor (21), a support (22) and a switch (23); one end of the pump body is fixedly connected to a shaft seal seat, the other end of the shaft seal seat is fixedly connected to the motor (21), one side of the motor (21) is fixedly connected to the switch (23), and the bottom of the motor (21) is fixedly connected to the support (22); The pressure relief valve device comprises a movable plate (32), a spring (33), a steel ball (34), an upper valve body (35) and a lower valve body (36); the top of the upper valve body (35) is fixedly connected to a mechanical shaft seal, the mechanical shaft seal is slidably connected to the movable plate (32), the bottom of the movable plate (32) is fixedly connected to the spring (33), and a slot is provided inside the lower valve body (36), in which the steel ball (34) is placed.

2. The oil pump with a pressure relief valve assembly according to claim 1, characterized in that: The pump body mechanism comprises a pump cover (11), a driving gear (12), a driven gear (13), a main rotating shaft (14) and a driven rotating shaft (15); the main rotating shaft (14) is fixedly connected inside the pump body, the driving gear (12) is rotatably connected to the center of the main rotating shaft (14); the driven rotating shaft (15) is fixedly connected inside the pump body and located on the upper side of the main rotating shaft (14), and the driven rotating shaft (15) is rotatably connected to the driven gear (13) at the center of the driven rotating shaft (15).

3. The oil pump with a pressure relief valve assembly according to claim 1, characterized in that: The oil inlet mechanism comprises an oil inlet chamber (41) and an oil inlet port (42); the top of the pump body is provided with the oil inlet chamber (41); the top of the oil inlet chamber (41) is fixedly connected to the oil inlet port (42).

4. The oil pump with a pressure relief valve assembly according to claim 1, characterized in that: The oil outlet mechanism comprises an oil outlet cavity (43) and an oil outlet port (44); the bottom of the pump body is provided with the oil outlet cavity (43), and the top of the oil outlet cavity (43) is fixedly connected with the oil outlet port (44).

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