Compact gear pump structure capable of working at high rotating speed and high pressure

Abstract

The utility model discloses a compact gear pump structure capable of realizing high-rotating-speed and high-pressure work, and relates to the technical field of gear pumps. The compact gear pump structure capable of achieving high-rotating-speed and high-pressure work comprises a pump body, a front cover and a rear cover are arranged on the outer wall of the pump body, a front side plate is arranged between the pump body and the front cover, and a rear side plate is arranged between the pump body and the rear cover. A front special-shaped sealing ring is fixedly arranged on the inner side face of the front side plate, a rear special-shaped sealing ring is fixedly arranged on the inner side face of the rear side plate, the sealing ring is made of high-density rubber, when the gear pump works, a hydraulic medium enters the oil storage cavity through multiple sets of oil passing holes in the front side plate and the rear side plate, the pressure in the oil storage cavity is increased under sealing of the sealing ring, and the front side plate and the rear side plate are pushed to a gear pair in a pump cavity; according to the design, the sealing performance of the gear pump is effectively improved, leakage of hydraulic media is reduced under the working conditions of high rotating speed and high pressure, and the volume efficiency of the pump is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of gear pump technology, specifically a compact gear pump structure capable of high-speed, high-pressure operation. Background Technology

[0002] Gear pumps are a type of hydraulic pump widely used in hydraulic systems. They are generally made as fixed displacement pumps, and their main structure consists of a pump body, a pair of meshing gears, a pump shaft, and front and rear pump covers. The pump body contains a pair of meshing internal and external gears. The two end faces of the gears are sealed by the front and rear pump covers. The pump body, pump covers, and the tooth grooves of the gears form a closed sealed volume. Gear pumps do not have a dedicated flow distribution device. The meshing line of the two gears along the tooth width direction divides the sealed volume into two parts: an oil suction chamber and an oil pressure chamber.

[0003] Existing gear pumps are prone to leakage at the gear meshing point under the dual effects of high speed and high pressure. This leads to a significant reduction in the pump's volumetric efficiency, resulting in unstable output pressure. Consequently, the pump cannot meet the high pressure and high precision requirements of industrial production, and it also wastes energy and increases the operating costs of the equipment. Therefore, a compact gear pump structure that can achieve high speed and high pressure operation is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a compact gear pump structure that enables high-speed and high-pressure operation. It solves the problem that leakage easily occurs at the gear meshing point under the dual effects of high speed and high pressure, which leads to a significant reduction in pump volumetric efficiency, unstable output pressure, inability to meet the high-pressure and high-precision requirements of industrial production, energy waste, and increased equipment operating costs.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a pump body, the outer wall of which is provided with a front cover and a rear cover, a front side plate is provided between the pump body and the front cover, a rear side plate is provided between the pump body and the rear cover, and the pump body is provided with an oil outlet and an oil inlet connecting its internal pump chamber.

[0008] Preferably, the front cover is bolted to the pump body by a plurality of bolts, and the rear cover is bolted to the pump body by a plurality of bolts.

[0009] Preferably, the outer walls of the front side plate and the rear side plate are respectively provided with two sets of first oil passage holes, two sets of second oil passage holes, two sets of third oil passage holes and two sets of fourth oil passage holes.

[0010] Preferably, a front irregular-shaped sealing ring is fixedly provided on the inner side of the front side plate, and a rear irregular-shaped sealing ring is fixedly provided on the inner side of the rear side plate.

[0011] Preferably, both the front and rear irregular-shaped sealing rings are made of high-density rubber.

[0012] Preferably, the outer walls of the front and rear side panels are respectively provided with oil storage cavities.

[0013] (III) Beneficial Effects

[0014] This invention provides a compact gear pump structure capable of high-speed, high-pressure operation. It offers the following advantages:

[0015] (I) This compact gear pump structure, capable of high-speed and high-pressure operation, features a front irregular-shaped sealing ring fixedly installed on the inner side of the front side plate and a rear irregular-shaped sealing ring fixedly installed on the inner side of the rear side plate. The sealing rings are made of high-density rubber. When the gear pump operates, the hydraulic medium enters the oil storage chamber through multiple sets of oil passages on the front and rear side plates. Under the sealing effect of the sealing rings, the pressure inside the oil storage chamber increases, pushing the front and rear side plates towards the gear pair within the pump chamber. This design effectively improves the sealing performance of the gear pump, reducing hydraulic medium leakage under high-speed and high-pressure conditions, ensuring the pump's volumetric efficiency, and stabilizing the output of high-pressure fluid. Simultaneously, the hydraulic force-assisted sealing further enhances the sealing performance at the gear meshing point, improving the reliability and stability of the seal, ensuring that the gear pump maintains a good sealing condition even under high-speed and high-pressure conditions.

[0016] (II) This compact gear pump structure, which can achieve high-speed and high-pressure operation, reduces space occupation by optimizing the connection method and spatial arrangement of each component. It is suitable for equipment and systems with high space requirements, facilitates the miniaturization and integration of equipment design, and improves installation flexibility and applicability. In addition, the improvement of sealing performance and structural design enables the gear pump to maintain good performance under high speed and high pressure, improves volumetric efficiency and output pressure stability, reduces energy loss caused by leakage and poor sealing, improves energy utilization efficiency, and extends the service life of the gear pump. It has high practical value and economic benefits. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall internal structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This utility model Figure 1 Enlarged structural diagram of area A in the middle;

[0020] Figure 4This is a schematic diagram of the front panel of this utility model;

[0021] Figure 5 This utility model Figure 1 Enlarged structural diagram of region B.

[0022] In the diagram: 1. Front cover; 2. Front side plate; 3. Front irregular seal ring; 4. Pump body; 5. Rear side plate; 6. Rear irregular seal ring; 7. Rear cover; 8. First oil passage hole; 9. Second oil passage hole; 10. Third oil passage hole; 11. Fourth oil passage hole; 12. Oil storage chamber. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This utility model provides a technical solution: it includes a pump body 4, with a front cover 1 and a rear cover 7 on the outer wall of the pump body 4, a front side plate 2 between the pump body 4 and the front cover 1, and a rear side plate 5 between the pump body 4 and the rear cover 7. The pump body 4 is provided with an oil outlet and an oil inlet connecting its internal pump chamber. The front cover 1 and the pump body 4 are connected by multiple bolts, and the rear cover 7 and the pump body 4 are connected by multiple bolts. The outer walls of the front side plate 2 and the rear side plate 5 are respectively provided with two sets of first oil passage holes 8, two sets of second oil passage holes 9, two sets of third oil passage holes 10, and two sets of fourth oil passage holes 11. A front irregular sealing ring 3 is fixedly provided on the inner side of the front side plate 2, and a rear irregular sealing ring 6 is fixedly provided on the inner side of the rear side plate 5. The front irregular sealing ring 3 and the rear irregular sealing ring 6 are both made of high-density rubber. The outer walls of the front side plate 2 and the rear side plate 5 are respectively provided with oil storage chambers 12.

[0025] When the gear pump is in use, the hydraulic medium enters the oil storage chamber 12 through the pump chamber via two sets of first oil passage holes 8, two sets of second oil passage holes 9, two sets of third oil passage holes 10, and two sets of fourth oil passage holes 11 opened on the front side plate 2 and the rear side plate 5. Under the sealing of the front irregular sealing ring 3 and the rear irregular sealing ring 6, the pressure in the oil storage chamber 12 increases, and the front side plate and the rear side plate are pushed towards the gear pair in the pump chamber. In this way, the sealing performance during gear meshing is improved, so that the gear pump can still maintain good performance under high pressure and high speed.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compact gear pump structure capable of high-speed, high-pressure operation, comprising a pump body (4), characterized in that: The pump body (4) is provided with a front cover (1) and a rear cover (7) on its outer wall. A front side plate (2) is provided between the pump body (4) and the front cover (1). A rear side plate (5) is provided between the pump body (4) and the rear cover (7). The pump body (4) is provided with an oil outlet and an oil inlet that connect to its internal pump chamber.

2. The compact gear pump structure capable of high-speed, high-pressure operation according to claim 1, characterized in that: The front cover (1) is bolted to the pump body (4) by a plurality of bolts, and the rear cover (7) is bolted to the pump body (4) by a plurality of bolts.

3. The compact gear pump structure capable of high-speed, high-pressure operation according to claim 1, characterized in that: The outer walls of the front side plate (2) and the rear side plate (5) are respectively provided with two sets of first oil passage holes (8), two sets of second oil passage holes (9), two sets of third oil passage holes (10) and two sets of fourth oil passage holes (11).

4. The compact gear pump structure capable of high-speed, high-pressure operation according to claim 1, characterized in that: A front irregular sealing ring (3) is fixedly provided on the inner side of the front side plate (2), and a rear irregular sealing ring (6) is fixedly provided on the inner side of the rear side plate (5).

5. The compact gear pump structure capable of high-speed, high-pressure operation according to claim 4, characterized in that: Both the front irregular sealing ring (3) and the rear irregular sealing ring (6) are made of high-density rubber.

6. The compact gear pump structure capable of high-speed, high-pressure operation according to claim 1, characterized in that: Oil storage cavities (12) are respectively provided on the outer walls of the front side plate (2) and the rear side plate (5).

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