阅读说明：本技术 一种耐压型液压泵 (Withstand voltage type hydraulic pump ) 是由 李慧娟 王磊 于 2020-06-02 设计创作，主要内容包括：本发明公开了一种耐压型液压泵,包括泵体,泵体的内腔中装有相互啮合的齿轮,齿轮安装在转轴上,转轴通过轴承安装在泵体上,转轴上装有用于密封泵体内腔的密封组件,本发明结构稳定,装配简单方便,能够通过斜面抵靠配合的方式提升密封效果,有效提升了液压泵的耐压性能,耐用耐操,使用寿命长,满足了现在的使用要求。(The invention discloses a pressure-resistant hydraulic pump, which comprises a pump body, wherein gears which are meshed with each other are arranged in an inner cavity of the pump body, the gears are arranged on a rotating shaft, the rotating shaft is arranged on the pump body through a bearing, and a sealing assembly for sealing the inner cavity of the pump body is arranged on the rotating shaft.)

1. A withstand voltage type hydraulic pump which characterized in that: the pump comprises a pump body (100), gears (200) which are meshed with each other are arranged in an inner cavity of the pump body (100), the gears (200) are arranged on a rotating shaft (300), the rotating shaft (300) is arranged on the pump body (100) through a bearing (400), and a sealing assembly (500) used for sealing the inner cavity of the pump body (100) is arranged on the rotating shaft (300).

2. The pressure-resistant hydraulic pump according to claim 1, wherein: seal assembly (500) and bearing (400) are arranged in the bearing groove on the pump body (100), seal assembly (500) includes A sealing washer (510) and B sealing washer (520), A sealing washer (510) and B sealing washer (520) cup joint on pivot (300), A sealing washer (510) support and lean on gear (200), B sealing washer (520) support and lean on bearing (400), A sealing washer (510) and B sealing washer (520) support and lean on the cooperation each other for A sealing washer (510) possesses the pressure that compresses tightly pivot (300), B sealing washer (520) possess the elasticity that supports and lean on the bearing groove.

3. The pressure-resistant hydraulic pump according to claim 2, wherein: a matching part (511) is arranged on one side, close to the B sealing ring (520), of the A sealing ring (510), a matching part (521) is arranged on one side, close to the A sealing ring (510), of the B sealing ring (520), the matching part (511) and the matching part (521) are abutted and matched in an inclined surface driving mode, the matching part (511) has a trend close to the rotating shaft (300), and the matching part (521) has a trend far away from the rotating shaft (300).

4. The pressure-resistant hydraulic pump according to claim 2, wherein: the A matching part (511) and the B matching part (521) are of a convex block structure, opposite side surfaces of the A matching part (511) and the B matching part (521) are inclined surfaces, and the two inclined surfaces are abutted and matched.

5. The pressure-resistant hydraulic pump according to claim 4, wherein: the A matching parts (511) and the B matching parts (521) are distributed in a circumferential array around the axis of the A sealing ring (510) and the B sealing ring (520).

6. The pressure-resistant hydraulic pump according to claim 2, wherein: the A matching part (511) and the B matching part (521) are of annular ring-shaped structures, a flaring ring opening is formed in the A matching part (511), a closing ring opening is formed in the B matching part (521), the closing ring opening of the B matching part (521) is formed in the flaring ring opening of the A matching part (511), and the A matching part (511) and the B matching part (521) are abutted and matched.

7. The pressure-resistant hydraulic pump according to claim 6, wherein: b sealing washer (520) are kept away from A sealing washer (510) one side and are provided with and lean on ring portion (522), lean on ring portion (522) and bearing (400) outer ring terminal surface to lean on.

8. The pressure-resistant hydraulic pump according to claim 7, wherein: an oil seal ring (530) is arranged between the A seal ring (510) and the B seal ring (520), and an A matching part (511) and a B matching part (521) are arranged in the oil seal ring (530).

9. The pressure-resistant hydraulic pump according to claim 8, wherein: the A sealing ring (510) is sleeved on the sliding bearing (600), and the sliding bearing (600) is sleeved on the rotating shaft (300).

10. The pressure-resistant hydraulic pump according to claim 9, wherein: the gear (200) comprises a driving gear (210) and a driven gear (220), the rotating shaft (300) comprises a driving shaft (310) and a driven shaft (320), the driving gear (210) is installed on the driving shaft (310), the driven gear (220) is installed on the driven shaft (320), and one end of the driving shaft (310) extends out of the pump body (100) and is connected with an external driving mechanism.

Technical Field

The invention relates to the field of hydraulic pumps, in particular to a pressure-resistant hydraulic pump.

Background

A gear pump is a type of pressure-resistant pump, and is a rotary pump that transfers or pressurizes a liquid by a change in a displacement volume and a movement between a pump cylinder and a meshing gear. Two gears, pump body and front and back covers form two closed spaces, when the gears rotate, the space on the gear disengagement side becomes larger from smaller to larger to form vacuum to suck liquid, and the space on the gear engagement side becomes smaller from larger to smaller to squeeze liquid into the pipeline. The suction chamber and the discharge chamber are separated by a meshing line of two gears. The pressure at the discharge of the gear pump is entirely dependent on the amount of resistance at the pump outlet.

The pressure resistance of the existing gear pump is not good, the poor sealing effect is one of the important problems restricting the pressure resistance, how to improve the sealing effect and improve the pressure resistance is one of the problems which are continuously solved at present.

Disclosure of Invention

In order to solve the technical problem, the invention provides a pressure-resistant hydraulic pump which comprises a pump body, wherein gears which are meshed with each other are arranged in an inner cavity of the pump body, the gears are arranged on a rotating shaft, the rotating shaft is arranged on the pump body through a bearing, and a sealing assembly for sealing the inner cavity of the pump body is arranged on the rotating shaft.

Preferably: the sealing assembly and the bearing are arranged in a bearing groove in the pump body, the sealing assembly comprises an A sealing ring and a B sealing ring, the A sealing ring and the B sealing ring are sleeved on the rotating shaft, the A sealing ring abuts against the gear, the B sealing ring abuts against the bearing, the A sealing ring and the B sealing ring abut against each other and are matched, so that the A sealing ring is provided with pressure for compressing the rotating shaft, and the B sealing ring is provided with elasticity for abutting against the bearing groove.

Preferably: a sealing washer is close to B sealing washer one side and is provided with A cooperation portion, and B sealing washer is close to A sealing washer one side and is provided with B cooperation portion, and A cooperation portion and B cooperation portion lean on the cooperation through inclined plane drive mode, and A cooperation portion possesses the trend of being close to the pivot, and B cooperation portion possesses the trend of keeping away from the pivot.

Preferably: the matching part A and the matching part B are of raised block structures, the opposite side surfaces of the matching part A and the matching part B are inclined planes, and the two inclined planes are abutted and matched.

Preferably: the matching parts A and the matching parts B are distributed in a circumferential array around the axis of the sealing ring A and the sealing ring B.

Preferably: a cooperation portion and B cooperation portion are annular circle form structure, are provided with the circle mouth that is the flaring form in the A cooperation portion, are provided with the circle mouth that is the binding off form in the B cooperation portion, and B cooperation portion binding off form circle mouth sets up in A cooperation portion flaring form circle mouth, and the two supports to lean on the cooperation.

Preferably: one side of the B sealing ring, which is far away from the A sealing ring, is provided with a leaning ring part, and the leaning ring part and the bearing outer ring end face lean against.

Preferably: an oil seal ring is arranged between the sealing ring A and the sealing ring B, and the matching part A and the matching part B are arranged in the oil seal ring.

Preferably: the A sealing ring is sleeved on the sliding bearing, and the sliding bearing is sleeved on the rotating shaft.

Preferably: the gear includes driving gear and driven gear, and the pivot includes drive shaft and driven shaft, and the driving gear is installed in the drive shaft, and driven gear installs on the driven shaft, and drive shaft one end is stretched out the external actuating mechanism who is connected with the outside of pump body.

The invention has the technical effects and advantages that: the hydraulic pump sealing device is stable in structure, simple and convenient to assemble, capable of improving the sealing effect in a mode that the inclined surface is abutted and matched, capable of effectively improving the pressure resistance of the hydraulic pump, durable and long in service life, and capable of meeting the existing use requirements.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the seal assembly of the present invention.

Description of reference numerals: 100-pump body, 200-gear, 210-driving gear, 220-driven gear, 300-rotating shaft, 310-driving shaft, 320-driven shaft, 400-bearing, 500-sealing assembly, 510-A sealing ring, 511-A matching part, 520-B sealing ring, 521-B matching part, 522-abutting ring part, 530-oil sealing ring and 600-sliding shaft sleeve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.