Normally open hydraulic control valve
A technology of hydraulic control valve and normally open type, applied in the field of hydraulic control valve and normally open type hydraulic control valve, can solve the problems of unsatisfactory valve core reset effect, etc., and achieve the effect of simple structure, long service life and good guidance.
Active Publication Date: 2016-09-07
TAIZHOU JULI TOOLS
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the structure of the pressure control valve is relatively simple, and the reset of the valve core is realized by setting a spring. After a long time of use, the reset effect of the valve core is not ideal.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0025] Such as figure 1 and 2 As shown, the normally open hydraulic control valve includes a body 1 with a cavity and a handle 2 hinged on the body 1. The body 1 has an oil inlet hole 1a and an oil outlet hole 1b. Cylindrical valve body 3 . The outer side of the valve body 3 has a convex body 3a protruding from the side wall of the valve body 3, and the main body 1 and the convex body 3a are fixedly connected by screws. Since the screw passes through the convex body 3a and the valve body 3 is fixedly connected to the body 1, the connection is more convenient. By adjusting the screw, the compression amount of the spring 6 can be adjusted to regulate the pressure.
[0026] The inner end of the body 1 is fixedly connected ...
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
Login to View More Abstract
The invention provides a normally open hydraulic control valve, and belongs to the technical field of hydraulic tool accessories. The normally open hydraulic control valve solves the problem that a valve element in an existing pressure control valve is not ideal in resetting effect. The normally open hydraulic control valve comprises a body with a cavity and a handle hinged to the body. An oil inlet hole and an oil outlet hole are arranged in the body, a cylinder-shaped valve body is fixedly connected into the cavity of the body, a valve needle is arranged in the valve body in a penetrating mode, the outer end of the valve needle abuts against one end of the handle, a first spring and a second spring are arranged in the cavity of the valve body, the inner end of the first spring and the inner end of the second spring both abut against the interior of the cavity of the valve body, the outer end of the second spring abuts against the outer end of the valve needle, the outer end of the first spring abuts against the inner end of the valve needle, and the second spring enables the valve needle to move towards the outer side and enables the oil inlet hole to be communicated with the cavity of the body. The normally open hydraulic control valve has the advantage of being ideal in resetting effect.
Description
technical field [0001] The invention belongs to the technical field of hydraulic tool accessories, and relates to a hydraulic control valve, in particular to a normally open hydraulic control valve. Background technique [0002] Electro-hydraulic tools include electro-hydraulic crimping pliers, electro-hydraulic shearing pliers, electro-hydraulic crimping pliers, etc. Electric hydraulic tools generally include a motor, an oil storage chamber, a hydraulic pump, a hydraulic cylinder, a switch assembly, and a hydraulic control valve. The hydraulic cylinder is provided with a return spring and a piston rod, and the outer end of the piston rod is fixedly connected to a working end. When the electric hydraulic tool is working, the motor drives the hydraulic pump to rotate, presses the pressure oil in the oil storage chamber into the hydraulic cylinder and pushes the hydraulic working end to make it in a working state. When it is necessary to stop the hydraulic working end, the sw...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02F16K1/32
Inventor 张银根何挺伟
Owner TAIZHOU JULI TOOLS