Gear pump with oil tank capacity of 1 liter

Abstract

The utility model relates to the technical field of gear pumps, and discloses a gear pump with the oil tank capacity of 1 liter. The gear pump comprises an oil tank assembly and a pump body, the oil tank assembly is detachably arranged at the upper end of the pump body, a thin motor is arranged in the pump body, a universal joint is arranged at the upper end of the thin motor, and the gear pump is connected to the universal joint; an unloading groove is further formed in the pump body, an unloading assembly is arranged in the unloading groove, the unloading groove is communicated with the gear pump and the oil tank assembly, a safety valve assembly is arranged on the inner side of the oil tank assembly, and the safety valve assembly is communicated with the gear pump. The oil tank assembly and the pump body are designed in an integrated mode, the compact and light-weight design of the gear pump and the oil tank is achieved, the light-weight requirement of a new energy automobile is met, the capacity of the oil tank is accurately controlled to be 1 liter, the loss of grease stored for a long time is reduced, and meanwhile the requirement in a low-frequency use scene is met; the device has the effects of compact structure and low maintenance cost.

Description

Technical Field

[0001] The present application relates to the technical field of gear pumps, and in particular to a gear pump with an oil tank capacity of 1 liter. Background Art

[0002] With the rapid development of new energy passenger vehicles, lightweight design has become an important means of improving vehicle performance and energy efficiency. In this context, the design optimization of the gear pumps and their fluid storage tanks used in auxiliary systems has become particularly critical. To ensure effective cooling, filtration, and bubble separation during system operation, the size and capacity of conventional gear pumps and their oil tanks may conflict with lightweighting goals. Especially in infrequently used vehicles, oversized tanks can easily lead to grease deterioration during prolonged storage, resulting in significant internal grease waste, increasing maintenance costs and impacting system stability.

[0003] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0004] In order to solve the problem that the gear pump and its oil tank are too large, the grease is easily deteriorated after long-term storage, resulting in a large amount of internal grease waste and increased maintenance costs, the present application provides a gear pump with an oil tank capacity of 1 liter.

[0005] The present application provides a gear pump with a fuel tank capacity of 1 liter, which adopts the following technical solution:

[0006] A gear pump with a fuel tank capacity of 1 liter, comprising a fuel tank assembly and a pump body;

[0007] Wherein, the oil tank assembly is detachably arranged at the upper end of the pump body and is used to supply grease to the pump body;

[0008] A thin motor is provided inside the pump body, a universal joint is provided at the upper end of the thin motor, a gear pump is connected to the universal joint, a unloading groove is also provided inside the pump body, an unloading assembly is provided in the unloading groove, the unloading groove is respectively connected to the gear pump and the oil tank assembly, a safety valve assembly is provided on the inside of the oil tank assembly, and the safety valve assembly is connected to the gear pump.

[0009] Preferably, a sealing structure is added to the connection between the oil tank assembly and the pump body to improve the sealing performance of the connection, and the volume of the oil tank assembly is 1L.

[0010] Preferably, a bottom cover is detachably provided at the lower end of the pump body, and a sealing member is additionally provided at the connection between the pump body and the bottom cover.

[0011] Preferably, the gear pump and the pump body are designed to be detachable, and a mechanical sealing structure is provided on the outer side of the thin motor on the pump body to prevent grease leakage.

[0012] Preferably, the pump body is also provided with an oil inlet channel and an oil outlet channel, and the two ends of the oil inlet channel are respectively provided with a hexagonal screw plug and a refueling assembly, wherein the hexagonal screw plug is used to add or return fluid to the oil tank assembly, and the two ends of the oil outlet channel are respectively provided with an oil outlet joint and an oil outlet plug, and the oil outlet joint is used to provide fluid to the hydraulic system.

[0013] In summary, this application has the following beneficial technical effects:

[0014] Through the coordinated use of the oil outlet joint, hexagonal screw plug, refueling assembly, TC skeleton oil seal, thin motor, gear pump, unloading assembly, bottom cover, fuel tank assembly and pump body, the fuel tank assembly and pump body are integrated into an integrated design, realizing a compact and lightweight design of the gear pump and fuel tank. The gear pump and fuel tank are small in size and easy to place, which greatly reduces the overall weight and meets the lightweight requirements of new energy vehicles. The fuel tank capacity is precisely controlled to 1 liter, avoiding the problem of large-scale oil deterioration caused by long-term storage of oil, reducing the loss of oil during long-term storage, and meeting the needs of low-frequency usage scenarios. Compared with the existing technology, it has a compact structure and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view of an embodiment of the application;

[0016] Figure 2 It is a left side view of the embodiment of the application;

[0017] Figure 3 It is a right side view of the embodiment of the application;

[0018] Figure 4 It is a plan view of an embodiment of the application;

[0019] Figure 5 for Figure 1 Side cross-sectional view along the HH direction;

[0020] Figure 6 for Figure 1 Top cross-sectional view along the GG direction.

[0021] Explanation of the accompanying symbols: 1. Oil outlet connector; 2. Hexagon socket screw plug; 3. Refueling assembly; 4. TC skeleton oil seal; 5. Thin motor; 6. Gear pump; 7. Unloading assembly; 8. Combined sealing gasket; 9. Hexagon socket three-combination bolt one; 10. Sealing gasket one; 11. Safety valve assembly; 12. Universal joint; 13. Oil outlet plug; 14. Hexagon socket three-combination bolt two; 15. Hexagon socket three-combination bolt three; 16. Wiring harness assembly; 17. Cable connector assembly; 18. Sealing gasket two; 19. Bottom cover; 20. O-ring; 21. Fuel tank assembly; 22. Pump body. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-3 This application is described in further detail.

[0023] The embodiment of the present application discloses a gear pump with a fuel tank capacity of 1 liter. Figure 1-6 , a gear pump with a fuel tank capacity of 1 liter of oil outlet joint, includes a pump body 22, an oil tank assembly 21 is detachably installed on the upper end of the pump body 22, and a bottom cover 19 is detachably installed on the bottom of the pump body 22. A thin motor 5 is installed inside the pump body 22, and the output end of the thin motor 5 is connected to a universal joint 12, and the output end of the universal joint 12 is connected to the gear pump 6. An unloading groove is also provided on the oil tank assembly 21, and an unloading assembly 7 is installed in the unloading groove. The unloading groove is connected to the gear pump 6 and the oil tank assembly 21 through a preset unloading hole. When the system pressure exceeds the preset value, the unloading assembly 7 opens to return the excess oil to the oil tank to prevent overload. A safety valve assembly 11 is installed on the inside of the oil tank assembly 21, and the safety valve assembly 11 is connected to the gear pump 6 through a flow channel to monitor and adjust the system pressure to ensure safe operation of the system. The oil tank assembly 21 and the pump body 22 adopt a more compact integrated design to meet the lightweight requirements of new energy passenger vehicles, reduce the overall volume, and facilitate placement.

[0024] Reference Figure 5 A sealing groove that is compatible with the oil tank assembly 21 is installed on the top of the pump body 22. The oil tank assembly 21 is inserted into the sealing groove. A sealing structure is added to the sealing groove. The sealing structure can use a sealing gasket 10 with a specification of φ129*φ119*4 as needed. The sealing performance of the connection is improved through 1021 and the pump body 22. The volume of the oil tank assembly 21 is 1L. The oil tank assembly 21 and the pump body 22 are fastened by several 9 with a specification of M5×16 to ensure the stability of the connection.

[0025] Reference Figure 5The lower end of the pump body 22 is also provided with a sealing groove, and the bottom cover 19 is inserted into the sealing groove, and a seal is added at the connection between the pump body 22 and the bottom cover 19. The seal can be selected from a sealing gasket 2 18 with a specification of φ129*φ119*4 according to needs. The sealing gasket 2 18 and the sealing gasket 10 are both made of NBR material. The bottom cover 19 is detachably mounted on the pump body 22 by a number of hexagonal three-combination bolts 3 15. The size specification of the hexagonal three-combination bolts 3 15 is M5×16. The pump body 22 is made of ADC12 material, and the bottom cover 19 is made of nylon material.

[0026] Reference Figure 5 The gear pump 6 is detachably mounted on the pump body 22 through a number of hexagonal three-combination bolts 14. The size of the hexagonal three-combination bolts 14 is M5×12. A mechanical seal structure is installed on the outside of the output shaft of the thin motor 5. The mechanical seal structure can adopt a TC skeleton oil seal 4 of φ8×φ15×5 as needed to prevent grease leakage and external dust from entering the internal grease. The specification of the thin motor 5 is DC24V 40W.

[0027] Reference Figure 6 , an oil inlet channel and an oil outlet channel are also installed on the pump body 22. A hexagonal screw plug 2 is installed at one end of the oil inlet channel. Fluid can be added to or returned to the oil tank assembly 21 through the hexagonal screw plug 2. The size of the hexagonal screw plug 2 is M18*1.5. The refueling assembly 3 is sealed at the other end of the oil inlet channel. The hexagonal screw plug 2 is composed of a filter and a valve to remove impurities in the grease. A combined sealing gasket 8 is installed between the refueling assembly 3 and the oil inlet channel. Its specification adopts φ18.2 to ensure the sealing of the connection. Oil outlet joints 1 are respectively installed at both ends of the oil outlet channel, which are connected to the external hydraulic system through the oil outlet joint 1. The oil outlet plug 13 is sealed at the other end of the oil outlet channel.

[0028] Reference Figure 1 The size of the universal joint 12 is φ8*13, and an O-ring 20 is installed in the unloading hole of the gear pump 6. The size of the O-ring 20 is φ5.2*φ1.9. The lower end of the pump body 22 is also equipped with a wiring harness assembly 16 through a cable connector assembly 17 to power the thin motor 5 and transmit control signals to ensure the electrical connection of the pump system. The overall height of the device is 246.2mm, of which the overall height of the oil tank assembly 21 and the pump body 22 is 220.2mm, the diameter is 143mm, and the width of the base is 176mm.

[0029] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0030] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0031] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0032] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A gear pump with a fuel tank capacity of 1 liter, comprising a fuel tank assembly (21) and a pump body (22); in, The oil tank assembly (21) is detachably arranged on the upper end of the pump body (22) and is used to supply grease to the pump body (22); A thin motor (5) is provided inside the pump body (22), a universal joint (12) is provided at the upper end of the thin motor (5), a gear pump (6) is connected to the universal joint (12), a unloading groove is further provided inside the pump body (22), an unloading assembly (7) is provided in the unloading groove, the unloading groove is communicated with the gear pump (6) and the oil tank assembly (21), respectively, a safety valve assembly (11) is provided inside the oil tank assembly (21), and the safety valve assembly (11) is communicated with the gear pump (6).

2. A gear pump with a fuel tank capacity of 1 liter according to claim 1, characterized in that: A sealing structure is added to the connection between the oil tank assembly (21) and the pump body (22) to improve the sealing performance of the connection. The volume of the oil tank assembly (21) is 1L.

3. The gear pump with a fuel tank capacity of 1 liter according to claim 1, characterized in that: A bottom cover (19) is detachably provided at the lower end of the pump body (22), and a sealing member is additionally provided at the connection between the pump body (22) and the bottom cover (19).

4. A gear pump with a fuel tank capacity of 1 liter according to claim 1, characterized in that: The gear pump (6) and the pump body (22) are designed to be detachable, and a mechanical sealing structure is provided on the outer side of the thin motor (5) on the pump body (22) to prevent grease leakage.

5. The gear pump with a fuel tank capacity of 1 liter according to claim 1, characterized in that: The pump body (22) is further provided with an oil inlet channel and an oil outlet channel, and the two ends of the oil inlet channel are respectively provided with a hexagonal screw plug (2) and a refueling assembly (3), wherein the hexagonal screw plug (2) is used to add or return fluid to the oil tank assembly (21), and the two ends of the oil outlet channel are respectively provided with an oil outlet connector (1) and an oil outlet plug (13), and the oil outlet connector (1) is used to provide fluid to the hydraulic system.

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