Rotary hole oil discharge structure of rear cover of oil pump
By designing the oil-release structure of the rear cover rotary hole in the oil pump, the high temperature problem caused by the rotational movement of the internal meshing gear pump is solved, and the long-term stable operation and temperature control of the oil pump are achieved.
Patent Information
- Application Number
- CN202421929466.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-08-09
AI Technical Summary
When using an oil pump, the rotational movement of the gears and ring gears of the internal meshing gear pump leads to internal leakage, high pressure and squeezing produce high temperatures, which is fast, affecting the service life and temperature control of the pump.
The oil-discharge structure of the oil pump rear cover is designed, and the curved plate, connecting pipe, rotating bearing and trough of the inner wall of the oil pump main body can be used to discharge high-temperature oil and suction of new oil, reducing the temperature of the pump.
It effectively improves the service life of the oil pump, is suitable for long-term pressure holding, reduces the temperature of the pump, and prevents jamming and noise increase.
Smart Images
Figure CN222782768U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil pumps, in particular to an oil pump rear cover rotating hole oil unloading structure. Background Art
[0002] When the oil pump is in use, the gears and gear rings of the internal gear pump are rotating, and a certain amount of internal leakage will occur during the rotation. When the internal gear pump is maintaining pressure, the outlet is blocked. When the pump is still rotating and under high pressure, the leaked oil and gas are under high pressure and squeezed, which will generate high temperature and heat up very quickly. For this reason, we proposed a rotating hole oil unloading structure for the oil pump rear cover. Utility Model Content
[0003] The purpose of the utility model is to provide an oil pump rear cover rotating hole oil unloading structure, so as to solve the problem raised in the above background technology that when the oil pump is used, the gears and gear rings of the internal gear pump are in rotational motion, and a certain amount of internal leakage will occur during the rotational motion. When the internal gear pump is maintaining pressure, the outlet is blocked. When the pump is still rotating and under high pressure, the leaked oil and gas are under high pressure and squeezed, which will generate high temperature and heat up very quickly. In order to achieve the above purpose, the utility model provides the following technical solutions: the oil pump rear cover rotating hole oil unloading structure, including an oil pump body, the bottom inner wall of the oil pump body is fixedly connected with a curved plate, the curved plate is arc-shaped, the bottom inner wall of the oil pump body is fixedly connected with a connecting pipe, the bottom of the connecting pipe is fixedly connected with a rotating bearing, the bottom of the rotating bearing is fixedly connected with a fixed chassis, the inside of the oil pump body is provided with a through groove, the connecting pipe is fixedly connected inside the through groove, and the oil pump also has a gear and gear ring of the internal gear pump that are in rotational motion, During the rotational motion, a certain amount of internal leakage will be generated. When the internal gear pump is maintaining pressure, the outlet is blocked. When the pump is still rotating and under high pressure, the leaked oil and gas will be subjected to high pressure and extrusion, and will generate high temperature, and the temperature rises very quickly. The present invention discharges the high-temperature oil after being squeezed out of the oil pump body in time, while the circulating new oil has a relatively low temperature. The new oil is sucked into the pump, and the squeezed internal leakage oil is discharged out of the oil pump. This can not only effectively improve the service life of the pump, but also is suitable for long-term pressure maintenance and can reduce the temperature of the pump.
[0004] Further preferably, the rotating bearing is fixedly connected inside the through groove, the fixed chassis is fixedly connected to the bottom of the oil pump body, and a plurality of thread grooves are opened on the top of the oil pump body and the thread grooves are distributed in a ring array.
[0005] Further preferably, two annular grooves are provided on the bottom inner wall of the oil pump body, and the two annular grooves are symmetrically distributed.
[0006] Further preferably, a plurality of fixing through holes are opened inside the fixed chassis and the fixing through holes are distributed in a ring array.
[0007] Further preferably, the through groove is located in the middle of the two annular chute grooves, and the curved surface on one side of the curved plate is respectively fitted with the annular chute grooves.
[0008] Further preferably, the annular groove is arc-shaped, and the curved plate is located between the two annular grooves. When the oil pump is used, the outer ring gear of the internal gear pump rotates on the inner wall of the oil pump housing. The outer ring gear and the pump housing are both made of metal materials. If no oil film is formed between them, friction will be formed between the housing and the ring gear, the noise of the internal gear pump will increase, the life of the pump will be reduced, and the friction temperature will be too high, which may cause the pump to get stuck. In order to solve this problem, an annular groove is opened on the inner wall of the oil pump body to allow the hydraulic oil to circulate in the groove, thereby forming an oil film, which can reduce friction, reduce resistance, lower oil temperature, and prevent getting stuck.
[0009] Compared with the prior art, the utility model has the following beneficial effects:
[0010] In the utility model, when the oil pump is in use, the gears and gear rings of the internal meshing gear pump rotate, and a certain amount of internal leakage will be generated during the rotational movement. When the internal meshing gear pump maintains pressure, the outlet is blocked, and the pump is still rotating and under high pressure. The leaked oil and gas are subjected to high pressure and extrusion, and will generate high temperature, and the heating rate is very fast. The present invention discharges the high-temperature oil that has been squeezed out of the oil pump body in time, while the circulating new oil has a relatively low temperature, so that the new oil is sucked into the pump and the squeezed internal leakage oil is discharged out of the oil pump. This can not only effectively improve the service life of the pump, but also is suitable for long-term pressure maintenance and can reduce the temperature of the pump.
[0011] In the utility model, when the oil pump is in use, the outer gear ring of the internal gear pump rotates on the inner wall of the oil pump housing. Both the outer gear ring and the pump housing are made of metal. If no oil film is formed between them, friction will be formed between the housing and the gear ring, the noise of the internal gear pump will increase, the life of the pump will be reduced, and the friction temperature will be too high, which may cause the pump to get stuck. In order to solve this problem, an annular groove is opened on the inner wall of the oil pump body to allow the hydraulic oil to circulate in the groove, thereby forming a layer of oil film, which can reduce friction, reduce resistance, lower the oil temperature, and prevent getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the three-dimensional main structure of the utility model;
[0013] Figure 2 This is a schematic diagram of the overall explosion three-dimensional structure of the utility model;
[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model from a side view;
[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model.
[0017] In the figure: 1. Oil pump body; 2. Curved plate; 3. Connecting pipe; 4. Rotating bearing; 5. Fixed chassis; 6. Through groove; 7. Threaded groove; 8. Fixed through hole; 9. Annular slide groove. DETAILED DESCRIPTION
[0018] 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 technical personnel in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-Figure 5 The utility model provides a technical solution: an oil pump rear cover rotary hole oil unloading structure, including an oil pump body 1, a curved plate 2 is fixedly connected to the bottom inner wall of the oil pump body 1, the curved plate 2 is arc-shaped, a connecting pipe 3 is fixedly connected to the bottom inner wall of the oil pump body 1, a rotating bearing 4 is fixedly connected to the bottom of the connecting pipe 3, a fixed chassis 5 is fixedly connected to the bottom of the rotating bearing 4, a through groove 6 is opened inside the oil pump body 1, the connecting pipe 3 is fixedly connected to the inside of the through groove 6, the rotating bearing 4 is fixedly connected to the inside of the through groove 6, and the fixed chassis 5 is fixedly connected to the bottom of the oil pump body 1. At the same time, the oil pump also has an internal meshing gear pump The gears and gear rings are in rotational motion, and a certain amount of internal leakage will be generated during the rotational motion. When the internal meshing gear pump is maintaining pressure, the outlet is blocked. When the pump is still rotating and under high pressure, the leaked oil and gas are subjected to high pressure and extrusion, and will generate high temperature, and the temperature rises very quickly. The present invention discharges the high-temperature oil that has been squeezed out of the oil pump body 1 in time, while the circulating new oil has a relatively low temperature, so that the new oil is sucked into the pump and the squeezed internal leakage oil is discharged out of the oil pump. This can not only effectively improve the service life of the pump, but also is suitable for long-term pressure maintenance and can reduce the temperature of the pump.
[0020] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a plurality of thread grooves 7 are provided on the top of the oil pump body 1, and the thread grooves 7 are distributed in an annular array, a plurality of fixed perforations 8 are provided inside the fixed chassis 5, and the fixed perforations 8 are distributed in an annular array, and two annular grooves 9 are provided on the bottom inner wall of the oil pump body 1, and the two annular grooves 9 are symmetrically distributed, and the through groove 6 is located in the middle of the two annular grooves 9. When the oil pump is used, the outer gear ring of the internal gear pump rotates on the inner wall of the oil pump shell. The outer gear ring and the pump shell are both made of metal materials. If no oil film is formed between them, friction will be formed between the shell and the gear ring, the noise of the internal gear pump will increase, the life of the pump will be reduced, and the friction temperature will be too high, and it may be stuck. In order to solve this problem, an annular groove 9 is provided on the inner wall of the oil pump body 1 to allow the hydraulic oil to circulate in the groove, thereby forming an oil film, which can reduce friction, reduce resistance, reduce oil temperature, and prevent sticking.
[0021] The use method and advantages of the utility model: The oil pump rear cover rotating hole oil unloading structure, when in use, the working process is as follows:
[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when the oil pump is used, the outer gear ring of the internal gear pump rotates on the inner wall of the oil pump housing. The outer gear ring and the pump housing are both made of metal. If no oil film is formed between them, friction will form between the housing and the gear ring, and the noise of the internal gear pump will increase, the life of the pump will be reduced, and the friction temperature will be too high, which may cause the pump to get stuck. In order to solve this problem, an annular groove 9 is opened on the inner wall of the oil pump body 1 to allow the hydraulic oil to circulate in the groove, thereby forming an oil film, which can reduce friction, reduce resistance, lower oil temperature, and prevent jamming. At the same time, the oil pump also has a gear of the internal gear pump. The wheel and the gear ring are in rotational motion, and a certain amount of internal leakage will be generated in the process of rotational motion. When the internal meshing gear pump is maintaining pressure, the outlet is blocked. When the pump is still rotating and under high pressure, the leaked oil and gas will generate high temperature after high pressure and extrusion, and the temperature rises very quickly. The present invention discharges the high-temperature oil after the oil is squeezed out of the oil pump body 1 in time, while the circulating new oil has a relatively low temperature. The new oil is sucked into the pump, and the squeezed internal leakage oil is discharged out of the oil pump. This can not only effectively improve the service life of the pump, but also is suitable for long-term pressure maintenance and can reduce the temperature of the pump.
[0023] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry 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 will 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 rear cover rotary hole oil unloading structure, comprising an oil pump body (1), characterized in that: The bottom inner wall of the oil pump body (1) is fixedly connected to a curved plate (2), the curved plate (2) is arc-shaped, the bottom inner wall of the oil pump body (1) is fixedly connected to a connecting pipe (3), the bottom of the connecting pipe (3) is fixedly connected to a rotating bearing (4), the bottom of the rotating bearing (4) is fixedly connected to a fixed chassis (5), a through groove (6) is provided inside the oil pump body (1), and the connecting pipe (3) is fixedly connected inside the through groove (6).
2. The oil pump rear cover rotating hole oil unloading structure according to claim 1 is characterized in that: The rotary bearing (4) is fixedly connected inside the through groove (6), the fixed chassis (5) is fixedly connected to the bottom of the oil pump body (1), and a plurality of thread grooves (7) are provided on the top of the oil pump body (1), and the thread grooves (7) are distributed in a ring array.
3. The oil pump rear cover rotating hole oil unloading structure according to claim 2 is characterized in that: Two annular sliding grooves (9) are provided on the inner wall of the bottom of the oil pump body (1), and the two annular sliding grooves (9) are symmetrically distributed.
4. The oil pump rear cover rotating hole oil unloading structure according to claim 3 is characterized in that: A plurality of fixing through holes (8) are provided inside the fixing chassis (5), and the fixing through holes (8) are distributed in a ring array.
5. The oil pump rear cover rotating hole oil unloading structure according to claim 4 is characterized in that: The through groove (6) is located in the middle of the two annular slide grooves (9), and the curved surface on one side of the curved plate (2) is respectively fitted with the annular slide grooves (9).
6. The oil pump rear cover rotating hole oil unloading structure according to claim 5, characterized in that: The annular chute (9) is arc-shaped, and the curved plate (2) is located between two annular chute (9).