Unlock instant, AI-driven research and patent intelligence for your innovation.

Overflow valve

A technology of overflow valve and valve body, which is applied in the direction of fluid pressure actuating device, servo motor assembly, mechanical equipment, etc.

Pending Publication Date: 2021-02-23
ROBERT BOSCH GMBH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to solve the problem of easy damage in the overflow valve in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Overflow valve
  • Overflow valve
  • Overflow valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] It should be understood that the drawings are only used to illustrate the present application, and the dimensions, proportions and numbers of the components are not intended to limit the present application.

[0039] see figure 2 and image 3 As shown, the overflow valve of an embodiment of the present application includes a valve body 10 , a valve piston 20 , a valve elastic member 30 and a valve plug 40 . The valve body 10 defines a valve chamber 11 including a piston chamber 12 and an elastic member chamber 13 in communication. The piston 20 includes a piston rod 21 and a piston head 22 , and the end surface of the piston rod 21 away from the piston head 22 is a piston tail surface 25 . One end of the valve elastic member 30 is elastically pre-compressed in the elastic member chamber 13 to abut against the piston head 22 , and the other end is abutted to the valve plug 40 . The valve plug 40 can be omitted in other embodiments, and the valve elastic member 30 nee...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an overflow valve. The overflow valve comprises a valve body, a valve piston and a valve elastic piece, wherein a valve chamber is formed in the valve body, a piston chamber andan elastic piece chamber are formed in the valve chamber and communicate with each other, a piston comprises a piston rod and a piston head, and the end face, away from the piston head, of the pistonrod is a piston tail face. The end, pressed in the elastic piece chamber, of the valve elastic piece abuts against the piston head, the circumferential outer contour of the piston rod is the same asthe circumferential inner contour of the piston chamber, a through hole which penetrates through the piston chamber is formed in the valve body, and the valve body is provided with a seat face arranged at the position of a joint between the piston chamber and the elastic piece chamber. When the piston tail face is not stressed by external liquid, the piston rod is arranged in the piston chamber, the piston head is located in the elastic piece chamber and abuts against the seat face. The valve chamber is characterized by further comprising a damping chamber which is located at the other end ofthe piston chamber and communicates with the piston chamber, and the damping chamber is provided with an opening smaller than the sectional area of the piston chamber in the direction perpendicular tothe axis of the overflow valve.

Description

technical field [0001] The present application relates to an overflow valve, in particular to an overflow valve capable of reducing damage. Background technique [0002] In the hydraulic oil circuit of the fuel engine, the fuel provided by the fuel pump needs some margin to ensure that the needs of the rear end can be fully met. Excess fuel needs to be released. In order to release fuel with a certain pressure, it is usually achieved by setting an overflow valve in the hydraulic channel. [0003] see figure 1 As shown, the overflow valve 90 includes a valve body 91 , a valve piston 92 , a valve spring 93 and a valve ball 94 . The valve body 91 has a connected cylindrical piston cavity 912 and a spring cavity 913 , and the diameter of the spring cavity 913 is larger than that of the piston cavity 912 . The valve piston 92 includes a head 921 and a body 922. The size of the head 921 is larger than that of the body 922. The body 922 reciprocates in the piston cavity 912 and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
CPCF15B13/029
Inventor 魏巍
Owner ROBERT BOSCH GMBH