阅读说明：本技术 一种子母泵油封性能检测装置 (Primary and secondary pump oil blanket performance detection device ) 是由 徐永伟 于 2021-10-11 设计创作，主要内容包括：本发明涉及一种子母泵油封性能检测装置。主要解决现有子母泵的油封试验存在的零件装配多、检测结果的准确性低和检测成本高的技术问题。本发明的技术方案是：一种子母泵油封性能检测装置,它由油封检测壳体、后盖、O型密封圈、传动轴、孔用弹性挡圈、调整垫片、轴用弹性挡圈和深沟球轴承组成,所述深沟球轴承装在传动轴后部设置的轴承径处,所述深沟球轴承的外圈经过盈配合装在油封检测壳体内腔设置的轴孔中且通过孔用弹性挡圈固定,所述调整垫片设在深沟球轴承外圈与孔用弹性挡圈之间,以便于调整轴向游隙,所述后盖设在油封检测壳体的后端并通过内六角圆柱头螺钉连接,所述O型密封圈设在后盖上设置的密封槽中,对后盖作径向孔密封。(The invention relates to a device for detecting the oil seal performance of a primary and secondary pump. The main technical problem who solves the oil blanket test of current primary and secondary pump and exist that the part assembly is many, the accuracy of testing result is low and detect with high costs. The technical scheme of the invention is as follows: the utility model provides a master and slave pump oil blanket performance detection device, it is by the oil blanket detection casing, back lid, O type sealing washer, transmission shaft, hole circlip, adjusting shim, the axle is with circlip and deep groove ball bearing group one-tenth, deep groove ball bearing dress is in the bearing footpath department that the transmission shaft rear portion set up, deep groove ball bearing's outer lane is adorned in the shaft hole that the oil blanket detection casing inner chamber set up and is fixed through circlip for the clearing hole through interference fit, adjusting shim establishes between deep groove ball bearing outer lane and hole circlip to adjustment axial clearance, the back lid is established and is detected the rear end of casing and through inner hexagonal cylinder head screwed connection at the oil blanket, O type sealing washer is established in the seal groove that sets up on the back lid, and is sealed for the radial hole to the back lid.)

1. The utility model provides a sub-mother pump oil blanket performance detection device which characterized in that: it comprises an oil seal detection shell (1), a rear cover (2), an O-shaped sealing ring (3), a transmission shaft (4), a circlip for hole (5), an adjusting gasket (6), a circlip for shaft (7) and a deep groove ball bearing (8), wherein the deep groove ball bearing (8) is arranged at the bearing diameter arranged at the rear part of the transmission shaft (4) and is fixed on the transmission shaft (4) through the circlip for shaft (7), the outer ring of the deep groove ball bearing (8) is arranged in a shaft hole arranged in the inner cavity of the oil seal detection shell (1) in an interference fit way and is fixed through the circlip for hole (5), the adjusting gasket (6) is arranged between the outer ring of the deep groove ball bearing (8) and the circlip for hole (5) so as to adjust the axial clearance, the rear cover (2) is arranged at the rear end of the oil seal detection shell (1) and is connected through an inner hexagonal cylindrical head screw (13), the O-shaped sealing ring (3) is arranged in a sealing groove formed in the rear cover (2) and used for sealing a radial hole of the rear cover (2).

2. The device for detecting the oil seal performance of the master-slave pump as claimed in claim 1, wherein: the method comprises the following steps of; the oil seal detection device is characterized in that a step-shaped shoulder is arranged at the front end of the inner cavity of the oil seal detection shell (1) and used for detecting oil seals with different specifications, and an exhaust port (11) which is also used as a pressure measurement port is arranged at the rear part of the side wall of the oil seal detection shell (1).

3. The device for detecting the oil seal performance of the master-slave pump as claimed in claim 1, wherein: and a threaded oil inlet (12) is formed in the rear cover (2).

4. The device for detecting the oil seal performance of the master-slave pump as claimed in claim 1, wherein: and a step-shaped shoulder is arranged on the transmission shaft (4) and is used for detecting oil seals of different specifications.

Technical Field

The invention belongs to the technical field of oil pump oil seal detection equipment, and particularly relates to a device for detecting the oil seal performance of a primary pump and a secondary pump.

Background

The primary and secondary vane pump is widely applied to the fields of light industry, engineering machinery and the like. Has the advantages of high pressure, long service life, easy oiling, etc. In order to prevent hydraulic oil in the shell from leaking through the transmission shaft, a common framework oil seal is used for sealing the shaft end of the rotation shaft. Improper oil seal selection will cause oil leakage at the shaft end, and the reliability of the primary and secondary pumps is directly influenced.

In order to ensure the reliability and durability of the oil seal, besides the manufacturer provides necessary working parameters and quality detection reports, the adaptability detection of the oil seal and the master-slave pump is also required. The current method is direct pump-on detection. This test requires the assembly of nearly 30 parts into a single unit and the introduction of unnecessary heart pieces. And the sealing effect of the high-pressure oil area and the low-pressure oil area of the pump influences the accuracy of the detection result. In addition, the oil seals with different specifications need to be tested on the corresponding primary and secondary pumps, so that the detection cost is improved.

Disclosure of Invention

The invention aims to solve the technical problems of more parts in assembly, low accuracy of detection results and high detection cost in the oil seal test of the conventional master-slave pump, and provides a device for detecting the oil seal performance of the master-slave pump.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a master and slave pump oil blanket performance detection device, it is by the oil blanket detection casing, back lid, O type sealing washer, transmission shaft, hole circlip, adjusting shim, epaxial circlip and deep groove ball bearing constitute, deep groove ball bearing dress is in the bearing footpath department that the transmission shaft rear portion set up to fix on the transmission shaft through epaxial circlip, deep groove ball bearing's outer lane is adorned in the shaft hole that oil blanket detection casing inner chamber set up through interference fit and is fixed through circlip for the clearing hole, adjusting shim establishes between deep groove ball bearing outer lane and hole circlip, so that adjustment axial internal clearance, the back lid is established at the oil blanket detection casing's rear end and is connected through hexagon socket head cylinder head screw, O type sealing washer is established in the seal groove that sets up on the back lid, and radial hole is sealed to the back lid.

Furthermore, the front end of the inner cavity of the oil seal detection shell is provided with a step-shaped shoulder for detecting oil seals with different specifications, and the rear part of the side wall of the oil seal detection shell is provided with an exhaust port which is also used as a pressure measurement port.

Furthermore, a threaded oil inlet is formed in the rear cover.

Furthermore, a step-shaped shoulder is arranged on the transmission shaft and used for detecting oil seals of different specifications.

The invention has the beneficial effects that:

the primary and secondary pump oil seal performance detection device provided by the invention adopts a few parts, and the stepped shoulders for assembling tested oil seals are arranged on the oil seal detection shell and the transmission shaft and are used for detecting oil seals with different specifications, so that the technical problems of more parts, low accuracy of detection results and high detection cost in the existing primary and secondary pump oil seal test are solved. Compared with the background technology, the invention has the advantages of simple structure, high accuracy of the detection result and low detection cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a view in the direction of X in fig. 1.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

As shown in fig. 1-2, the oil seal performance testing device for the primary and secondary pumps in this embodiment comprises an oil seal testing casing 1, a back cover 2, an O-ring 3, a transmission shaft 4, a circlip 5 for hole, an adjusting pad 6, a circlip 7 for shaft and a deep groove ball bearing 8, wherein the deep groove ball bearing 8 is installed at the bearing diameter position arranged at the back part of the transmission shaft 4 and fixed on the transmission shaft 4 through the circlip 7 for shaft, the outer ring of the deep groove ball bearing 8 is installed in the shaft hole arranged in the inner cavity of the oil seal testing casing 1 through interference fit and fixed through the circlip 5 for hole, the adjusting pad 6 is arranged between the outer ring of the deep groove ball bearing 8 and the circlip 5 for hole so as to adjust the axial play, the back cover 2 is arranged at the back end of the oil seal testing casing 1 and connected through an inner hexagon socket head screw 13, the O-ring 3 is arranged in a sealing groove arranged on the back cover 2, the rear cover 2 is sealed radially.

Furthermore, the front end of the inner cavity of the oil seal detection shell 1 is provided with a step-shaped shoulder for detecting oil seals with different specifications, and the rear part of the side wall of the oil seal detection shell 1 is provided with an exhaust port 11 which is also used as a pressure measurement port.

Further, a threaded oil inlet 12 is formed in the rear cover 2.

Further, a stepped shoulder is arranged on the transmission shaft 4 and used for detecting oil seals of different specifications.

The working process of the invention is as follows: firstly, a tested oil seal 9 is arranged in a step-shaped shoulder arranged on an oil seal detection shell 1, then a transmission shaft 4 provided with a deep groove ball bearing 8 is arranged on the oil seal detection shell 1, axial clearance is adjusted through an adjusting gasket 6, a rear cover 2 is connected with the rear end of the oil seal detection shell 1 through an inner hexagonal socket head cap screw 13, radial hole sealing is carried out through an O-shaped sealing ring 3 arranged on the rear cover 2, oil leakage is prevented, and finally a flat key 10 is arranged at the shaft end of the transmission shaft 4 and is connected with a motor through a coupler.

During detection, hydraulic oil is injected from a threaded oil inlet 12 on the rear cover 2, exhaust is carried out through an exhaust port 11 on the oil seal detection shell 1, a pressure gauge is connected after exhaust is finished, and the pressure of an oil cavity is monitored in real time. After the device is started, the rotating speed is increased to the rated rotating speed, white paper is placed under the sealing position of the shaft end, the pump is stopped within a specified time to observe the oil leakage condition of the oil seal, and whether oil drops seep out of the shaft end during detection is used as the criterion for judging whether the oil seal is qualified or not.