Oil pump

Abstract

The utility model relates to the technical field of liquid pumps, in particular to an oil pump which comprises a front cover, a pump head is installed at one end of the front cover, a pressure adjusting assembly is arranged in the pump head and comprises an overflow valve, a valve seat and a spring, a valve element is arranged at one end of the overflow valve, and the valve element is connected with the valve seat. One end of the valve seat is installed on the sealing face of the valve element and connected with the sealing face of the valve element in a sealed mode, and the spring is arranged on the stress face of the valve element and connected to the surface of the overflow valve in a sleeved mode. When the system pressure rises to a set value, the valve element can overcome the resistance of the spring under the action of the pressure, sealing between the valve element and the valve seat is broken, and redundant oil can flow out through the overflow valve, so that the pressure in the system is effectively reduced, and equipment damage or safety accidents possibly caused by too high pressure are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid pumps, in particular to an oil pump. Background Art

[0002] With the continuous advancement of industrial technology, the research and development and production of oil pumps, as key equipment for liquid transportation, have also undergone significant changes. Traditional oil pumps have problems such as insufficient performance and easy leakage during use, while modern oil pumps have achieved significant performance improvements by introducing advanced technologies such as precision manufacturing and material science. These oil pumps are not only more compact and lightweight, but also have achieved higher precision in the amount, pressure and time control of pumped oil, and can automatically adjust to meet the needs of different loads. At the same time, the application fields of oil pumps are becoming increasingly wide, covering many fields such as industry, transportation, petrochemicals, etc., and have become one of the indispensable and important equipment in modern industry.

[0003] After searching, the Chinese patent document application number: 202220206838.6 discloses an oil pump, including a fixed plate and a cover, a pump body is clamped between the fixed plate and the cover, an oil suction pipe and an oil supply pipe are arranged on the outer wall of the pump body, the oil suction pipe is connected to the inner wall of the shaft hole of the pump body, and an oil discharge port is also opened on the inner wall of the shaft hole, the oil supply pipe is connected to the axial surface of the pump body, and a groove is also arranged on the axial surface of the pump body, and the groove is connected to the oil outlet, an impeller is arranged in the shaft hole of the pump body, and a paddle is connected in the impeller, and the paddle extends out of the outer wall of the impeller and can conflict with the connecting port and the oil discharge port of the oil suction pipe to form two cavities. The utility model overcomes the shortcomings of the prior art, has a reasonable design and a compact structure, and the paddle is arranged to isolate the two cavities, one cavity becomes larger to absorb oil, and the other cavity becomes smaller to discharge oil from the oil discharge port, and the rotating impeller drives the paddle to absorb and discharge oil.

[0004] However, the above-mentioned oil pump still has the following defects:

[0005] The oil pump may not release excess oil when the system pressure is too high, which will increase the risk of system overload and damage. Therefore, we need an oil pump to solve the above problem. Utility Model Content

[0006] The utility model aims to provide an oil pump, which mainly through the design of an overflow valve, a valve seat and a spring, enables the oil pump to automatically open the overflow function when the system pressure exceeds a preset value. When the system pressure rises to the set value, the valve core will overcome the resistance of the spring under the action of pressure, and the seal between the valve seat is broken, and the excess oil can flow out through the overflow valve, thereby effectively reducing the pressure in the system and preventing equipment damage or safety accidents that may be caused by excessive pressure.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An oil pump, comprising a front cover, one end of the front cover is provided with a pump head, one end of the pump head is provided with an oil inlet pipe, the other end of the pump head is provided with an oil outlet pipe, one side of the pump head is provided with a motor rotor, the surface of the motor rotor is provided with a motor housing, the inside of the pump head is provided with a pressure regulating assembly, the pressure regulating assembly includes a relief valve, a valve seat and a spring, one end of the relief valve is provided with a valve core, one end of the valve seat is installed in sealing connection with the sealing surface of the valve core, and the spring is arranged on the force-receiving surface of the valve core and sleeved on the surface of the relief valve.

[0008] Preferably, three bolts are provided on one side of the front cover, and one ends of the three bolts are equidistantly installed on the surface of the front cover.

[0009] Preferably, a base is installed at the bottom end of the motor housing, and mounting holes for fixing the oil pump are provided around the surface of the base.

[0010] Preferably, the base is arranged in an inverted U shape, and a groove is provided at the connection between the base and the bottom end of the motor housing, and the groove is fitted and connected to the bottom end of the motor housing.

[0011] Preferably, an overflow port is provided above the pressure regulating assembly, and the overflow port is opened at the top end of the pump head.

[0012] Preferably, an impeller is installed on one side inside the pump head, the output shaft of the motor rotor is fixedly connected to the inside of the impeller, and a plurality of blades are equidistantly installed on the impeller.

[0013] Preferably, a rear cover is installed on one side of the motor housing, and a cable connection port is opened on the side wall of the surface of the rear cover.

[0014] Preferably, a fan cover is installed on one side of the rear cover, a fan is installed inside the fan cover, and a limiting assembly is provided at the connection between the side plate of the fan cover and the rear cover.

[0015] Preferably, the limiting assembly includes a limiting strip and a limiting groove, the limiting groove is opened on the side wall of the surface of the fan cover, the limiting strip is fixedly installed on the side wall of the rear cover, and one side of the limiting strip is snap-connected to the inner wall of the limiting groove.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. The utility model mainly designs an overflow valve, a valve seat and a spring, enabling the oil pump to automatically activate the overflow function when the system pressure exceeds the preset value. When the system pressure rises to the set value, the valve core will overcome the resistance of the spring under the action of the pressure, breaking the seal between the valve core and the valve seat, and the excess oil can flow out through the overflow valve, thus effectively reducing the pressure in the system and preventing equipment damage or safety accidents that may be caused by excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 is a bottom view of the three-dimensional structure of the utility model;

[0020] Figure 3 is a side view of the three-dimensional structure of the utility model;

[0021] Figure 4 is a structural schematic diagram of the pump head of the utility model;

[0022] Figure 5 is a structural schematic diagram inside the motor housing of the utility model;

[0023] Figure 6 is a structural schematic diagram of the motor housing and the rear cover of the utility model.

[0024] In the figure: 1. Front cover; 101. Bolt; 2. Pump head; 201. Oil inlet pipe; 202. Oil outlet pipe; 203. Overflow port; 3. Impeller; 4. Overflow valve; 5. Valve seat; 6. Spring; 7. Motor housing; 8. Base; 801. Mounting hole; 802. Groove; 9. Motor rotor; 10. Fan; 11. Rear cover; 1101. Cable connection port; 12. Fan cover; 1201. Limiting strip; 1202. Limiting groove. DETAILED IMPLEMENTATION MANNER

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1-6, the present utility model provides a technical solution: an oil pump, including a front cover 1, one end of the front cover 1 is installed with a pump head 2, one end of the pump head 2 is provided with an oil inlet pipe 201, the other end of the pump head 2 is provided with an oil outlet pipe 202, one side of the pump head 2 is installed with a motor rotor 9, the surface of the motor rotor 9 is installed with a motor housing 7, and a pressure regulating component is arranged inside the pump head 2. The pressure regulating component includes a relief valve 4, a valve seat 5 and a spring 6. One end of the relief valve 4 is provided with a valve core, one end of the valve seat 5 is installed and sealingly connected to the sealing surface of the valve core, and the spring 6 is arranged on the force-bearing surface of the valve core and sleeved on the surface of the relief valve 4;

[0027] During use, through the design of the relief valve 4, the valve seat 5 and the spring 6, the oil pump can automatically turn on the overflow function when the system pressure exceeds the preset value. When the system pressure rises to the set value, the valve core will overcome the resistance of the spring 6 under the action of the pressure, and the seal between the valve core and the valve seat 5 will be broken, and the excess oil can flow out through the relief valve 4, thus effectively reducing the pressure in the system and preventing equipment damage or safety accidents that may be caused by excessive pressure.

[0028] One side of the front cover 1 is provided with three bolts 101. One end of the three bolts 101 is equidistantly installed on the surface of the front cover 1. The fastening function of the bolts 101 can ensure the close fit between the front cover 1 and the pump head 2, reduce the possibility of gaps and leaks. The equidistantly distributed bolts 101 can provide a more uniform fastening force, further ensure the uniform pressure on the sealing surface, improve the sealing performance, and prevent oil leakage.

[0029] A base 8 is installed at the bottom end of the motor housing 7. Installation holes 801 for fixing the oil pump are provided around the surface of the base 8. Fixing the oil pump on the base 8 through the installation holes 801 can ensure the stability of the oil pump during operation, reduce looseness or damage caused by vibration or impact. The design of the installation holes 801 makes the installation process of the oil pump simpler and faster. Installers can easily fix the oil pump on the base 8 according to the position and size of the installation holes 801 without complex positioning and calibration, which not only improves the installation efficiency but also reduces the error rate during the installation process.

[0030] The base 8 is arranged in an inverted U shape. A groove 802 is provided at the connection between the base 8 and the bottom end of the motor housing 7. The groove 802 is fitted and connected to the bottom end of the motor housing 7. The fitting connection between the groove 802 and the bottom end of the motor housing 7 further enhances the connection strength between the base 8 and the motor, reduces looseness or displacement caused by vibration, and improves the stability of the overall structure.

[0031] An overflow port 203 is provided above the pressure regulating component. The overflow port 203 is opened at the top of the pump head 2. When the system pressure exceeds the preset value, the overflow port 203 can be quickly opened to release the excess oil fluid, thus effectively preventing equipment damage or safety accidents caused by excessive system pressure. And through the regulating function of the overflow port 203, the system pressure can be ensured to be maintained within the set range, avoiding adverse effects on the system performance due to pressure fluctuations.

[0032] An impeller 3 is installed on one side inside the pump head 2. The output shaft of the motor rotor 9 is fixedly connected to the inside of the impeller 3. A plurality of blades are equidistantly installed on the impeller 3. When the impeller 3 rotates, the blades extending out of the outer wall of the impeller 3 can be in contact with the connection ports of the oil inlet pipe 201 and the oil outlet pipe 202, forming two cavities. A certain vacuum is formed at the center of the impeller 3 at the connection port of the oil inlet pipe 201, and a relatively high pressure is formed at the outer edge of the impeller 3 at the connection port of the oil outlet pipe 202. As the impeller 3 continuously rotates, the liquid will be continuously sucked in and discharged. The equidistantly installed blades can ensure that the fluid is uniformly affected by the force when the impeller 3 rotates, thereby reducing eddy current and turbulence phenomena, improving the fluid transportation efficiency, helping to reduce energy consumption, and enhancing the overall performance of the equipment. At the same time, the structure of the impeller 3 and the blades is redesigned, and the motor rotor can be reversed by reversing the positive and negative poles of the power supply, so as to achieve the ability of reverse refueling.

[0033] A rear cover 11 is installed on one side of the motor housing 7. A cable connection port 1101 is opened on the surface side wall of the rear cover 11. Through this port, the cable can be connected to an external 24V DC power supply to provide electrical energy for the oil pump.

[0034] A fan cover 12 is installed on one side of the rear cover 11. A fan 10 is installed inside the fan cover 12. A limiting component is provided at the connection between the side plate of the fan cover 12 and the rear cover 11. The fan 10 installed inside the fan cover 12 can actively extract the heat inside the motor housing 7 through the rotation of the fan and discharge it into the external environment, which helps to significantly reduce the working temperature inside the motor, ensure the normal operation of the motor and extend its service life. The design of the fan cover 12 provides a protective cover for the fan, preventing external objects or impurities from directly contacting the fan blades, reducing the risk of failures caused by fan damage. The fan cover 12 can also prevent the noise generated by the fan during operation from being directly transmitted to the outside, improving the overall sound insulation performance of the equipment.

[0035] The limiting component includes a limiting strip 1201 and a limiting groove 1202. The limiting groove 1202 is formed in the side wall of the surface of the fan cover 12, and the limiting strip 1201 is fixedly installed on the side wall of the rear cover 11. One side of the limiting strip 1201 is snap-connected to the inner wall of the limiting groove 1202. Through the snap connection between the limiting strip 1201 and the limiting groove 1202, the connection between the fan cover 12 and the rear cover 11 becomes more stable, effectively preventing the fan cover 12 from loosening or falling off due to vibration or impact during use, thus ensuring the overall stability and reliability of the heat dissipation system.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil pump, comprising a front cover (1), characterized in that: A pump head (2) is installed at one end of the front cover (1), an oil inlet pipeline (201) is provided at one end of the pump head (2), and an oil outlet pipeline (202) is provided at the other end of the pump head (2). A motor rotor (9) is installed on one side of the pump head (2), and a motor housing (7) is installed on the surface of the motor rotor (9). A pressure regulating component is arranged inside the pump head (2), and the pressure regulating component comprises a relief valve (4), a valve seat (5) and a spring (6). A valve core is arranged at one end of the relief valve (4), and one end of the valve seat (5) is installed and sealed on the sealing surface of the valve core. The spring (6) is arranged on the force-bearing surface of the valve core and is sleeved on the surface of the relief valve (4).

2. An oil pump according to claim 1, characterized in that: Three bolts (101) are arranged on one side of the front cover (1), and one end of the three bolts (101) are equidistantly mounted on the surface of the front cover (1).

3. An oil pump according to claim 2, characterized in that: A base (8) is installed at the bottom end of the motor housing (7), and mounting holes (801) for fixing the oil pump are provided around the surface of the base (8).

4. An oil pump according to claim 3, characterized in that: The base (8) is arranged in an inverted U shape, and a groove (802) is arranged at the connection between the base (8) and the bottom end of the motor housing (7), and the groove (802) is closely connected to the bottom end of the motor housing (7).

5. An oil pump according to claim 4, characterized in that: An overflow port (203) is provided above the pressure regulating assembly, and the overflow port (203) is opened at the top of the pump head (2).

6. An oil pump according to claim 5, characterized in that: An impeller (3) is installed on one side of the interior of the pump head (2); the output shaft of the motor rotor (9) is fixedly connected to the interior of the impeller (3); and a plurality of blades are equidistantly installed on the impeller (3).

7. An oil pump according to claim 6, characterized in that: A rear cover (11) is installed on one side of the motor housing (7), and a cable connection port (1101) is provided on a surface side wall of the rear cover (11).

8. An oil pump according to claim 7, characterized in that: A fan cover (12) is installed on one side of the rear cover (11), a fan (10) is installed inside the fan cover (12), and a limit position assembly is provided at the connection between the side plate of the fan cover (12) and the rear cover (11).

9. An oil pump according to claim 8, characterized in that: The limiting assembly comprises a limiting strip (1201) and a limiting groove (1202); the limiting groove (1202) is provided on the surface side wall of the fan cover (12); the limiting strip (1201) is fixedly mounted on the side wall of the rear cover (11); and one side of the limiting strip (1201) is snap-connected to the inner wall of the limiting groove (1202).

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