Wear-resistant alloy gear oil pump

Abstract

The utility model discloses a wear -resisting alloy gear oil pump relates to gear pump technical field, including oil pump subassembly, and oil pump subassembly includes pump body, end cover, input rod, driving gear and driven gear, and driving gear and driven gear are rotationally installed in the pump body, the utility model discloses a spiral wear -resisting groove is arranged on the tooth top circle surface of gear, and the wear -resisting groove is filled with molybdenum disulfide grease, can form good lubricating effect on the contact surface of gear and other components, reduce friction and abrasion, reduce the metal scrap of abrasion simultaneously, avoid the damage of scrap to other components, in addition, wear -resisting bushing is arranged in the position corresponding to the gear outer circle of the inner wall of pump body, and wear -resisting bushing is made of high -hardness ceramic material, and the surface of side plate and gear end face contact is plated with a layer of hard alloy coating, further improved the wear resistance between each component of gear oil pump, prolonged the service life of whole gear oil pump.

Description

Technical Field

[0001] This utility model relates to the field of gear pump technology, and in particular to a wear-resistant alloy gear oil pump. Background Technology

[0002] Gear pumps are rotary pumps that rely on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport or pressurize liquids. They are widely used in industrial production, especially in applications where viscous liquids such as lubricating oil and hydraulic oil need to be transported. However, existing gear pumps have many problems in long-term use.

[0003] For example, Chinese patent CN216812131U discloses a gear oil pump, including a housing assembly with a receiving cavity and an oil inlet and an oil outlet respectively connected to the receiving cavity; a rotor assembly rotatably disposed in the receiving cavity, one end of the rotor assembly along the rotation axis forming a first end face gap with the first end face of the receiving cavity, and the other end forming a second end face gap with the second end face of the receiving cavity; the housing assembly is also provided with a first oil passage and a second oil passage, one end of the first oil passage connecting to the oil inlet or the oil outlet, and the other end penetrating the first end face, and one end of the second oil passage connecting to the oil inlet or the oil outlet, and the other end penetrating the second end face.

[0004] As the core component of a gear oil pump, gears are in frequent contact, friction, and wear with the pump, leading to a decrease in gear tooth profile accuracy, affecting the flow stability and pressure output of the pump, and reducing the pump's working efficiency. In addition, gear oil pumps lack a filtration device, allowing external impurities to easily enter the pump and cause oil deterioration. To address these issues, a wear-resistant alloy gear oil pump is proposed. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art and to propose a wear-resistant alloy gear oil pump.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wear-resistant alloy gear oil pump, comprising an oil pump assembly, the oil pump assembly including a pump body, an end cover, an input rod, a drive gear and a driven gear, both of which are rotatably mounted in the pump body and mesh with each other, side plates are respectively installed on both sides of the drive gear and the driven gear, and the surface of the side plates in contact with the gear end face is coated with a thick hard alloy coating, the tooth tip circle surface of the drive gear and the driven gear is provided with a spiral wear-resistant groove, and the inside of the wear-resistant groove is filled with molybdenum disulfide grease, a wear-resistant bushing is provided on the inner wall of the pump body at a position corresponding to the outer circle of the gear, and an oil suction assembly is fixedly connected to one end of the pump body, the oil suction assembly including an installation pipe, a filter plate and a connecting pipe connected to the pump body, and a filter screen is provided inside the filter plate.

[0007] Preferably, one end of the filter plate is fixedly connected to one end of the mounting pipe, and the other end of the filter plate is fixedly connected to one end of the connecting pipe.

[0008] Preferably, a vertical plate is slidably installed inside the filter plate, and both ends of the filter screen are engaged with one side of the vertical plate.

[0009] Preferably, a fixing plate is welded to the top of the vertical plate, and bolts are provided at both ends of the top of the fixing plate. The fixing plate is fixedly installed to the filter plate by multiple bolts.

[0010] Preferably, a base is welded to the bottom of the pump body, an input rod is fixedly installed at one end of the drive gear, and one end of the input rod extends out of the pump body.

[0011] Preferably, the end cap is fixedly installed at one end of the pump body, and the end of the pump body away from the connecting pipe is fixedly connected to the oil outlet pipe.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, a spiral wear-resistant groove with a depth of 0.5 to 1.0 mm is provided on the tooth tip circle surface of the driving gear and the driven gear. The wear-resistant groove is filled with molybdenum disulfide grease, which can form a good lubrication effect on the contact surface of the gear and other components, further reducing friction and wear, and reducing metal debris generated by wear, thus avoiding damage to other components. In addition, a wear-resistant bushing is provided on the inner wall of the pump body at a position corresponding to the outer circle of the gear. The wear-resistant bushing is made of high-hardness ceramic material, which has the advantages of high hardness, good wear resistance, and strong chemical stability. A hard alloy coating with a thickness of 0.05 to 0.1 mm is plated on the surface of the side plate that contacts the gear end face, which further improves the wear resistance between the various components of the gear oil pump and extends the service life of the entire gear oil pump. 2. In this utility model, by improving the oil suction component, the filter screen can filter the oil entering the pump body, preventing external impurities from easily entering the oil pump, thereby effectively reducing the probability of oil deterioration. At the same time, the filter screen is snapped into the vertical plate, making it convenient to clean or replace the filter screen and easy to use. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a wear-resistant alloy gear oil pump proposed in this utility model; Figure 2 This is a front sectional view of the oil pump assembly of a wear-resistant alloy gear oil pump proposed in this utility model. Figure 3 This is a side view of the internal structure of the oil pump assembly of a wear-resistant alloy gear oil pump proposed in this utility model. Figure 4This is a cross-sectional view of the oil suction assembly of a wear-resistant alloy gear oil pump proposed in this utility model.

[0014] Legend: 1. Oil suction assembly; 2. Oil pump assembly; 11. Mounting pipe; 12. Filter plate; 13. Connecting pipe; 14. Fixing plate; 15. Vertical plate; 16. Filter screen; 17. Bolt; 21. Base; 22. Pump body; 23. End cover; 24. Input rod; 25. Drive gear; 26. Driven gear; 27. Side plate; 28. Hard alloy coating; 29. ​​Oil outlet pipe; 210. Wear-resistant groove; 211. Molybdenum disulfide grease; 212. Wear-resistant bushing. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Example 1: As Figures 1-3 As shown, this utility model provides a wear-resistant alloy gear oil pump, including an oil pump assembly 2. The oil pump assembly 2 includes a pump body 22, an end cover 23, an input rod 24, a driving gear 25, and a driven gear 26. The driving gear 25 and the driven gear 26 are both rotatably mounted inside the pump body 22 and mesh with each other. Side plates 27 are respectively installed on both sides of the driving gear 25 and the driven gear 26, and the surface of the side plate 27 in contact with the gear end face is plated with a thick hard alloy coating 28. The driven gear 26 has a spiral wear-resistant groove 210 on its tooth tip circle surface, and the inside of the wear-resistant groove 210 is filled with molybdenum disulfide grease 211. The inner wall of the pump body 22 is provided with a wear-resistant bushing 212 at a position corresponding to the outer circle of the gear. A base 21 is welded to the bottom of the pump body 22. An input rod 24 is fixedly installed at one end of the driving gear 25, and one end of the input rod 24 extends out of the pump body 22. An end cap 23 is fixedly installed at one end of the pump body 22. An oil outlet pipe 29 is fixedly connected to the end of the pump body 22 away from the connecting pipe 13.

[0018] The specific settings and functions of this embodiment are described in detail below: The gear oil pump consists of an oil pump assembly 2 and an oil suction assembly 1. The oil pump assembly 2 includes a pump body 22, a driving gear 25 and a driven gear 26 disposed in the pump body 22, side plates 27 located on both sides of the gears, and an end cover 23. The driving gear 25 and the driven gear 26 are both made of wear-resistant alloy material. By manufacturing gears with wear-resistant alloy material, the hardness, wear resistance and corrosion resistance of the gears can be significantly improved. The tooth tip circular surface of the driving gear 25 and the driven gear 26 is provided with a spiral wear-resistant groove 210. The depth of the wear-resistant groove 210 is 0.5 to 1.0 mm and the width is 1 to 2 mm. The wear-resistant groove 210 is filled with molybdenum disulfide grease 211. When the gear rotates in the pump body 22, the molybdenum disulfide grease 211 in the wear-resistant groove 210 can form a lubricating film on the contact surface between the gear and the pump body 22 and the side plate 27, further reducing friction and wear. In addition, a wear-resistant bushing 212 is provided on the inner wall of the pump body 22 at a position corresponding to the outer circle of the gear. The wear-resistant bushing 212 is made of high-hardness ceramic material. Ceramic material has the advantages of high hardness, good wear resistance and strong chemical stability. The wear-resistant bushing 212 is installed in the groove of the inner wall of the pump body 22 by interference fit, which can effectively reduce the direct friction between the outer edge of the gear and the inner wall of the pump body 22 and improve the service life of the pump body 22. At the same time, a hard alloy coating 28 with a thickness of 0.05 to 0.1 mm is plated on the surface of the side plate 27 that contacts the gear end face. The hard alloy coating 28 has good wear resistance and friction reduction performance, which can reduce the wear between the gear end face and the side plate 27. The wear-resistant grooves 210 on the tip circle surface of the gear teeth, combined with molybdenum disulfide grease 211, can form a good lubrication effect on the contact surfaces of the gear and other components, further reducing friction and wear, while reducing metal debris generated by wear, avoiding damage to other components by debris, and reducing equipment maintenance costs. At the same time, the wear-resistant bushings 212 on the inner wall of the pump body 22 and the hard alloy coating 28 on the surface of the side plate 27 further improve the wear resistance between the various components of the gear oil pump, extend the service life of the entire gear oil pump, reduce equipment downtime, and improve production efficiency.

[0019] Example 2: Figure 1 , Figure 3 and Figure 4As shown, one end of the pump body 22 is fixedly connected to an oil suction assembly 1. The oil suction assembly 1 includes an installation pipe 11, a filter plate 12, and a connecting pipe 13 connected to the pump body 22. A filter screen 16 is provided inside the filter plate 12. One end of the filter plate 12 is fixedly connected to one end of the installation pipe 11, and the other end of the filter plate 12 is fixedly connected to one end of the connecting pipe 13. A vertical plate 15 is slidably installed inside the filter plate 12. Both ends of the filter screen 16 are snapped into one side of the vertical plate 15. A fixing plate 14 is welded to the top of the vertical plate 15. Bolts 17 are provided at both ends of the top of the fixing plate 14, and the fixing plate 14 is fixedly installed to the filter plate 12 by multiple bolts 17.

[0020] The overall effect of this embodiment is that by improving the oil suction assembly 1 and adding a filter plate 12 and a filter screen 16, the filter screen 16 can filter the oil entering the pump body 22, preventing external impurities from easily entering the oil pump, thereby effectively reducing the probability of oil deterioration. At the same time, the filter screen 16 is snapped into the vertical plate 15. When it is necessary to disassemble and replace the filter screen 16, simply remove the bolt 17 and slide the vertical plate 15 upward to remove it, which is convenient for cleaning or replacing the filter screen 16 and is easy to use.

[0021] The operating method and working principle of this device are as follows: The gear oil pump has spiral wear-resistant grooves 210 on the tip circles of the driving gear 25 and driven gear 26. These grooves are filled with molybdenum disulfide grease 211. When the gears rotate within the pump body 22, the molybdenum disulfide grease 211 in the wear-resistant grooves 210 forms a lubricating film on the contact surfaces between the gears and the pump body 22 and side plate 27, further reducing friction and wear. Furthermore, wear-resistant bushings 212 are provided on the inner wall of the pump body 22 at positions corresponding to the outer circles of the gears. These wear-resistant bushings 212 are made of high-hardness materials. Made of ceramic material, the side plate 27 has a 0.05-0.1 mm thick hard alloy coating 28 on its surface in contact with the gear end face. The hard alloy coating 28 has good wear resistance and friction reduction properties, which can reduce the wear between the gear end face and the side plate 27. The wear-resistant groove 210 on the gear tooth tip circle surface, together with molybdenum disulfide grease 211, reduces friction and wear. At the same time, the wear-resistant bushing 212 on the inner wall of the pump body 22 and the hard alloy coating 28 on the surface of the side plate 27 further improve the wear resistance between the various components of the gear oil pump and extend the service life of the entire gear oil pump. In addition, by improving the oil suction component 1, the filter screen 16 can filter the oil entering the pump body 22, preventing external impurities from easily entering the oil pump, thereby effectively reducing the probability of oil deterioration. At the same time, it is convenient to clean or replace the filter screen 16, making it easy to use.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A wear-resistant alloy gear oil pump, comprising an oil pump assembly (2), the oil pump assembly (2) comprising a pump body (22), an end cover (23), an input rod (24), a drive gear (25) and a driven gear (26), wherein the drive gear (25) and the driven gear (26) are rotatably mounted within the pump body (22), and the drive gear (25) and the driven gear (26) mesh with each other, characterized in that: Side plates (27) are installed on both sides of the driving gear (25) and the driven gear (26), and the surface of the side plate (27) in contact with the end face of the gear is coated with a thick hard alloy coating (28). The tooth tip circle surface of the driving gear (25) and the driven gear (26) is provided with a spiral wear-resistant groove (210), and the inside of the wear-resistant groove (210) is filled with molybdenum disulfide grease (211). The inner wall of the pump body (22) is provided with a wear-resistant bushing (212) at the position corresponding to the outer circle of the gear. One end of the pump body (22) is fixedly connected to an oil suction assembly (1). The oil suction assembly (1) includes an installation pipe (11), a filter plate (12) and a connecting pipe (13) connected to the pump body (22). The filter plate (12) is provided with a filter screen (16).

2. The wear-resistant alloy gear oil pump according to claim 1, characterized in that: One end of the filter plate (12) is fixedly connected to one end of the mounting pipe (11), and the other end of the filter plate (12) is fixedly connected to one end of the connecting pipe (13).

3. The wear-resistant alloy gear oil pump according to claim 1, characterized in that: A vertical plate (15) is slidably installed inside the filter plate (12), and the two ends of the filter screen (16) are engaged with one side of the vertical plate (15).

4. The wear-resistant alloy gear oil pump according to claim 3, characterized in that: A fixing plate (14) is welded to the top of the vertical plate (15). Bolts (17) are provided at both ends of the top of the fixing plate (14), and the fixing plate (14) is fixedly installed to the filter plate (12) by multiple bolts (17).

5. The wear-resistant alloy gear oil pump according to claim 1, characterized in that: A base (21) is welded to the bottom of the pump body (22), and an input rod (24) is fixedly installed at one end of the drive gear (25), with one end of the input rod (24) extending out of the pump body (22).

6. The wear-resistant alloy gear oil pump according to claim 1, characterized in that: The end cap (23) is fixedly installed at one end of the pump body (22), and the end of the pump body (22) away from the connecting pipe (13) is fixedly connected to the oil outlet pipe (29).

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