CN219975014U - One-way valve in oil cylinder - Google Patents

Abstract

The utility model relates to the technical field of hydraulic cylinders, and particularly discloses an in-cylinder one-way valve which comprises a piston assembly, a valve core, a piston rod and a cylinder body, wherein the valve core is arranged in the piston assembly, the piston assembly is arranged in the cylinder body, the piston rod is communicated with the piston assembly and is positioned at one end of the piston assembly, and the piston rod is positioned in the cylinder body. The one-way valve body is directly installed in the cylinder body through the arrangement of the structure, and the one-way valve body is not required to be installed outside the cylinder body, so that the leakage of the pipe body is reduced, the complexity and the cost of an oil pipe are reduced, the service life, the reliability and the stability of the oil cylinder are improved, and the one-way valve has wide application value and economic benefit in actual use.

Description

One-way valve in oil cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a one-way valve in a cylinder.

Background

Currently, in a hydraulic system, a breathing function of air flow is generally required to be realized, and a one-way breathing valve is added on a cylinder rod cavity in a traditional way.

However, in the prior art, the one-way breather valve is added on the rod cavity of the oil cylinder, so that dust in the outside air can enter the oil cylinder to pollute the oil cylinder and leak oil, and meanwhile, the pipeline and the complexity of the original hydraulic oil cylinder can be increased by adding the one-way breather valve, so that the cost of the hydraulic oil cylinder is increased.

Disclosure of Invention

The utility model aims to provide a one-way valve in an oil cylinder, and aims to solve the problems that the increase of a one-way breather valve in the prior art can increase the pipeline and complexity of the original hydraulic oil cylinder and the risk of pollution of the oil cylinder, thereby causing the cost increase and maintenance of the hydraulic oil cylinder.

In order to achieve the above purpose, the one-way valve in the oil cylinder comprises a piston assembly, a valve core, a piston rod and a cylinder body, wherein the valve core is arranged in the piston assembly, the piston assembly is arranged in the cylinder body, the piston rod is communicated with the piston assembly and is positioned at one end of the piston assembly, and the piston rod is positioned in the cylinder body.

The piston assembly comprises a valve body piston and a one-way valve body, wherein the valve body piston is arranged in the cylinder body, and the one-way valve body is arranged in the valve body piston.

The valve body piston is provided with a valve seat, an inlet and an outlet, the valve core is arranged in the valve seat, the inlet and the valve core form an inlet valve, and the outlet and the valve core form an outlet valve.

The one-way valve in the oil cylinder further comprises an O-shaped sealing ring, the O-shaped sealing ring is sleeved on the outer surface wall of the valve core, the O-shaped sealing ring and the valve body piston form a sealing structure, and a sealing structure is formed between the valve core and the valve seat.

The one-way valve in the oil cylinder has the beneficial effects that: the check valve body is directly installed in the cylinder body, and the check valve body is not required to be installed outside the cylinder body, so that the leakage of the pipe body is reduced, the complexity and the cost of an oil pipe are reduced, the service life, the reliability and the stability of the oil cylinder are improved, and the check valve has wide application value and economic benefit in actual use.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a sectional view showing the internal structure of a check valve in an oil cylinder according to the present utility model.

Fig. 2 is a partial structural sectional view of a check valve in an oil cylinder according to the present utility model.

Fig. 3 is a schematic diagram of a prior art one-way breather valve.

1-valve body piston, 2-check valve body, 3-case, 4-piston rod, 5-cylinder body, 6-disk seat, 7-import, 8-export, 9-O type sealing washer.

Detailed Description

Referring to fig. 1 and 2, the present utility model provides an in-cylinder check valve, which comprises a piston assembly, a valve core 3, a piston rod 4 and a cylinder body 5, wherein the valve core 3 is disposed inside the piston assembly, the piston assembly is disposed inside the cylinder body 5, the piston rod 4 is communicated with the piston assembly and is located at one end of the piston assembly, and the piston rod 4 is located inside the cylinder body 5.

Further, the piston assembly comprises a valve body piston 1 and a check valve body 2, wherein the valve body piston 1 is arranged in the cylinder 5, and the check valve body 2 is arranged in the valve body piston 1.

Further, the valve body piston 1 has a valve seat 6, an inlet 7, and an outlet 8, the valve body 3 is disposed inside the valve seat 6, the inlet 7 and the valve body 3 form an inlet valve, and the outlet 8 and the valve body 3 form an outlet 8 valve.

Further, the one-way valve in the oil cylinder further comprises an O-shaped sealing ring 9, the O-shaped sealing ring 9 is sleeved on the outer surface wall of the valve core 3, the O-shaped sealing ring 9 and the valve body piston 1 form a sealing structure, and the valve core 3 and the valve seat 6 form a sealing structure.

In this embodiment, the check valve body 2 is directly installed in the cylinder 5, and is not required to be installed outside the cylinder 5, compared with the prior art (fig. 3 of the specification attached hereto), the contact with the external environment is avoided, water and dust are prevented from directly going into the cylinder, and rust is caused inside the cylinder, so that foreign matter deposition is caused, the service life of the cylinder is shortened, and the check valve in the cylinder in this embodiment replaces the existing breathing mode, so that the service life, reliability and stability of the cylinder are improved, and meanwhile, the quality of products is improved, and the check valve has wide application value and economic benefit in practical use.

The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.

Claims (4)

1. A one-way valve in an oil cylinder is characterized in that,

the piston comprises a piston assembly, a valve core, a piston rod and a cylinder body, wherein the valve core is arranged in the piston assembly, the piston assembly is arranged in the cylinder body, the piston rod is communicated with the piston assembly and is positioned at one end of the piston assembly, and the piston rod is positioned in the cylinder body.

2. An in-cylinder check valve as claimed in claim 1, wherein,

the piston assembly comprises a valve body piston and a one-way valve body, wherein the valve body piston is arranged in the cylinder body, and the one-way valve body is arranged in the valve body piston.

3. An in-cylinder check valve as claimed in claim 2, wherein,

the valve body piston is provided with a valve seat, an inlet and an outlet, the valve core is arranged in the valve seat, the inlet and the valve core form an inlet valve, and the outlet and the valve core form an outlet valve.

4. An in-cylinder check valve as claimed in claim 3, wherein,

the one-way valve in the oil cylinder further comprises an O-shaped sealing ring, the O-shaped sealing ring is sleeved on the outer surface wall of the valve core, the O-shaped sealing ring and the valve body piston form a sealing structure, and a sealing structure is formed between the valve core and the valve seat.