CN210106710U

CN210106710U - Hydraulic valve flow passage structure capable of reducing pressure loss

Info

Publication number: CN210106710U
Application number: CN201921030060.2U
Authority: CN
Inventors: 翁明堂; 刘涛
Original assignee: Yongzhen Hydraulic Machinery (shanghai) Co Ltd
Current assignee: Yongzhen Hydraulic Machinery (shanghai) Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-02-21
Anticipated expiration: 2029-07-02

Abstract

Reduce loss of pressure's hydrovalve runner structure, including the valve body, this internal case that is equipped with of valve, its characterized in that: and a cavity a communicated with the oil inlet and a cavity b communicated with the oil outlet are respectively arranged on two sides of the valve core, and the cavity a and/or the cavity b are/is provided with a straight pipe-shaped inclined hole obliquely connected with the oil inlet and/or the oil outlet. The utility model can reduce the flow passage by utilizing the straight pipe which is arranged obliquely, thereby reducing the pressure loss; the number of the runners is reduced, the passing speed of the oil in the runners is higher, the friction force is reduced, and the heat productivity of the oil is reduced; and a plug is not adopted, so that the strength of the valve body is enhanced, and the pressure resistance of the valve body is better.

Description

Hydraulic valve flow passage structure capable of reducing pressure loss

Technical Field

The utility model belongs to the technical field of the hydrovalve technique and specifically relates to a reduce loss of pressure's hydrovalve runner structure.

Background

At present, the flow channel arrangement of the existing hydraulic valve adopts an orthogonal cutting structure due to the limitation of the flow channel structure and the process; and the orthogonally cut flow passages in the valve body create the process holes. The friction force of hydraulic oil is increased by the process holes, so that the oil temperature is increased, the viscosity is reduced, the pressure loss of the hydraulic valve is increased, and the hydraulic valve cannot achieve the optimal characteristics.

Referring to fig. 1, a conventional hydraulic valve and a flow passage structure thereof are shown, and are stacked check valves; the working mode is as follows: oil is fed from a pressure port P1, hydraulic oil acts on a valve core of the threaded cartridge valve through the cavity A, the valve core moves rightwards under the pressure of the hydraulic oil and is opened by the hydraulic oil after overcoming the spring force and the friction force, the hydraulic oil enters the cavity 2 from the cavity 1 and is communicated with the flow passage B, and the flow passage C is communicated with the port P2. The valve body of the existing structure is provided with two process flow passages which are blocked by a plug 1 and a plug 2, the intersection between the crossed flow passages is a right angle, and when hydraulic oil passes through the flow passages, friction and impact between the hydraulic oil and the right angle are generated, so that the flow resistance and the flow energy consumption of the hydraulic oil are increased.

With the increasing performance of mechanical equipment and the decreasing energy, the requirement for high pressure and low loss of hydraulic valves is increasing, and the above problems need to be solved.

Disclosure of Invention

The utility model discloses a solve current problem, aim at providing a reduction loss of pressure's hydrovalve runner structure.

In order to achieve the above object, the utility model discloses a technical scheme include the valve body, this internal case that is equipped with of valve, its characterized in that: and a cavity a communicated with the oil inlet and a cavity b communicated with the oil outlet are respectively arranged on two sides of the valve core, and the cavity a and/or the cavity b are/is provided with a straight pipe-shaped inclined hole obliquely connected with the oil inlet and/or the oil outlet. Compared with the prior art, the utility model utilizes the obliquely arranged straight pipe, thereby reducing the flow passage and reducing the pressure loss; the number of the runners is reduced, the passing speed of the oil in the runners is higher, the friction force is reduced, and the heat productivity of the oil is reduced; and a plug is not adopted, so that the strength of the valve body is enhanced, and the pressure resistance of the valve body is better.

Drawings

FIG. 1 is a schematic illustration of a flow path of a prior art hydraulic valve;

fig. 2 is a schematic structural diagram of an embodiment of the present invention;

fig. 3 is a graphical representation of the flow rate versus pressure loss for two configurations.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 shows an embodiment of the present invention, which includes a valve body, a valve core is arranged in the valve body, and the present invention is characterized in that: and a cavity a communicated with the oil inlet and a cavity b communicated with the oil outlet are respectively arranged on two sides of the valve core, and the cavity a and/or the cavity b are/is provided with a straight pipe-shaped inclined hole obliquely connected with the oil inlet and/or the oil outlet.

In the flow passage of the hydraulic valve in the embodiment, oil enters from the port P1, hydraulic oil passes through the cavity A and acts on the valve core of the threaded cartridge valve, the valve core moves rightwards, the valve core is opened by the hydraulic oil after overcoming spring force and friction force, and the hydraulic oil enters the cavity b from the port a.

In the embodiment, the port P2 is directly communicated with the oil outlet b of the one-way valve in a mode of drilling double inclined holes, and a cavity hole of the threaded cartridge valve is sunk by 8mm, so that a cavity b of the one-way valve is closer to a cavity port of a flow passage; the distance of the oil outlet is reduced, and the friction force between the hydraulic oil and the valve body is reduced.

Referring to fig. 3, the pressure loss can be reduced by 50% by using the check valve of the present embodiment.

The embodiments of the present invention have been described in conjunction with the accompanying drawings and examples, the structures of which are not intended to limit the present invention, and those skilled in the art can make modifications as required, and all changes and modifications within the scope of the appended claims are within the scope of protection.

Claims

1. The utility model provides a reduce loss of pressure's hydrovalve runner structure, includes the valve body, this internal case that is equipped with of valve, its characterized in that: and a cavity a communicated with the oil inlet and a cavity b communicated with the oil outlet are respectively arranged on two sides of the valve core, and the cavity a and/or the cavity b are/is provided with a straight pipe-shaped inclined hole obliquely connected with the oil inlet and/or the oil outlet.