Hydraulic gear pump of twin body type

Abstract

The utility model relates to gear pump field, concretely relates to a hydraulic gear pump of double body structure, the utility model relates to a hydraulic gear pump of double body structure, including front cover pump body, back cover and gear shaft, the front cover pump body is integrated design, the utility model discloses adopt double body design front cover and pump body to carry out the integrated design of merging, has reduced a junction stopper, has improved the structural strength of pump whole body compared with the original design, and has reduced the possible leakage hidden danger.

Description

Technical Field

[0001] This utility model relates to the field of gear pumps, specifically to a hydraulic gear pump with a dual-body structure. Background Technology

[0002] A hydraulic gear pump is a common hydraulic component whose main purpose is to convert mechanical energy into hydraulic energy, transporting fluid through the meshing of gears to provide power to a hydraulic system. Hydraulic gear pumps are widely used in various industrial machinery and equipment, such as injection molding machines, die-casting machines, and machine tools, to provide hydraulic power. They are also used in automotive power steering and braking systems.

[0003] Common internal gear pumps typically have a three-body structure, meaning the main structure consists of a front cover, a pump body, and a rear cover. This existing three-body design suffers from insufficient strength at the joints during high-speed operation, compromising the pump's high-speed performance. Furthermore, the three-body design also presents challenges in manufacturing and production costs. Summary of the Invention

[0004] This utility model aims to provide a hydraulic gear pump with a dual-body structure, the specific solution of which is as follows: A dual-body hydraulic gear pump includes a front cover pump body, a rear cover, and a gear shaft, wherein the front cover pump body is an integrated design.

[0005] The front cover pump body is provided with an internal gear ring, which is configured to cooperate with the gear shaft. A side plate is provided between the front cover pump body, the rear cover, and the gear shaft.

[0006] A retaining ring and a sealing ring are provided between the side plate and the front cover of the pump body to achieve a seal between them.

[0007] A retaining ring and a sealing ring are provided between the side panel and the rear cover to achieve a seal between them.

[0008] An O-ring is provided between the front cover pump body and the rear cover to achieve a seal between them.

[0009] A sliding bearing is provided between the front cover pump body and the gear shaft. The sliding bearing enables the gear shaft to rotate more smoothly.

[0010] A retaining ring is provided between the front cover pump body and the gear shaft to achieve a seal between them.

[0011] The front cover pump body is provided with a retaining ring for holes, a skeleton oil seal and a front cover pump body retaining ring at the front end near the gear shaft.

[0012] This utility model adopts a dual-body design, integrating the front cover and pump body into one unit, reducing one connection stop, improving the overall structural strength of the pump compared to the original design, and reducing potential leakage risks. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a dual-body hydraulic gear pump according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a dual-body hydraulic gear pump according to the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a dual-body hydraulic gear pump according to the present invention. Figure 3 ; Figure 4 This is a partial structural diagram of a dual-body hydraulic gear pump according to the present invention. Figure 1 ; Figure 5 This is a partial structural diagram of a dual-body hydraulic gear pump according to the present invention. Figure 2 ; The following components are labeled: 1. Front cover pump body; 2. Rear cover; 3. Gear shaft; 4. Internal gear ring; 5. Side plate; 6. Retaining ring; 7. Sealing ring; 8. O-ring; 9. Sliding bearing; 10. Shaft retaining ring; 11. Hole retaining ring; 12. Skeleton oil seal; 13. Front cover pump body retaining ring. Detailed Implementation

[0014] The following is combined Figure 1-5 Explanation: A dual-body hydraulic gear pump includes a front cover pump body 1, a rear cover 2, and a gear shaft 3, wherein the front cover pump body 1 is an integral design. An internal gear ring 4 is provided inside the front cover pump body 1, and the internal gear ring 4 and the gear shaft 3 are configured to cooperate. A side plate 5 is provided between the front cover pump body 1, the rear cover 2, and the gear shaft 3.

[0015] A retaining ring 6 and a sealing ring 7 are provided between the side plate 5 and the front cover pump body 1 to achieve a seal between them. A retaining ring 6 and a sealing ring 7 are also provided between the side plate 5 and the rear cover 2 to achieve a seal between them. An O-ring 8 is provided between the front cover pump body 1 and the rear cover 2 to achieve a seal between them. A sliding bearing 9 is provided between the front cover pump body 1 and the gear shaft 3. The sliding bearing 9 allows for better rotation of the gear shaft 3. A shaft retaining ring 10 is provided between the front cover pump body 1 and the gear shaft 3 to achieve a seal between them.

[0016] A retaining ring 11, a skeleton oil seal 12, and a front cover pump body retaining ring 13 are provided at the front end of the pump body 1 near the gear shaft 3. The skeleton oil seal 12 is used for dynamic sealing of the gear shaft 3 to ensure that the gear shaft 3 does not leak oil in the axial direction when it rotates. The retaining ring 11 and the front cover pump body retaining ring 13 provide axial limit for the skeleton oil seal 12. The retaining ring 11 ensures that the skeleton oil seal 12 will not fall off after being subjected to force. The front cover pump body retaining ring 13 acts as a buffer when pressing the skeleton oil seal 12 to prevent damage to the skeleton oil seal 12 during pressing.

[0017] Conventional internal gear pumps typically have a three-body structure, consisting of a front cover, pump body, and rear cover. However, this three-body design can lead to design flaws at high-speed operation, such as insufficient connection strength and poor sealing at the joint. Furthermore, it also results in higher manufacturing costs for the parts.

[0018] This utility model adopts a dual-body design, integrating the front cover and pump body into a single unit (i.e., front cover and pump body 1), which reduces one connection stop, improves the overall structural strength of the pump compared to the original design, and reduces the potential leakage risks.

[0019] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic gear pump with a dual-body structure, characterized in that: It includes a front cover pump body, a rear cover, and a gear shaft, wherein the front cover pump body is an integrated design; The front cover pump body is provided with an internal gear ring, which is configured to cooperate with the gear shaft. A side plate is provided between the front cover pump body, the rear cover and the gear shaft. A retaining ring and a sealing ring are provided between the side plate and the front cover pump body; A retaining ring and a sealing ring are provided between the side plate and the rear cover; An O-ring is provided between the front cover pump body and the rear cover; A sliding bearing is provided between the front cover pump body and the gear shaft; A shaft retaining ring is provided between the front cover pump body and the gear shaft; The front cover pump body is provided with a retaining ring for holes, a skeleton oil seal and a front cover pump body retaining ring at the front end near the gear shaft.

Images