CN210003588U

CN210003588U - one-way acceleration valves and hydraulic system with one-way acceleration valves

Info

Publication number: CN210003588U
Application number: CN201822127028.8U
Authority: CN
Inventors: 郑陈飞
Original assignee: Zhejiang Proud Group Fire Fighting Technology Co Ltd
Current assignee: Zhejiang Proud Group Fire Fighting Technology Co Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-01-31
Anticipated expiration: 2028-12-18

Abstract

The utility model discloses an one-way accelerating valve, including the valve body, be provided with oil feed section, oil-out, the oil return section of mutual intercommunication on the valve body, be provided with the check valve in the oil feed section, be provided with the second check valve in the oil return section, when the check valve is opened, the oil return section seals, and when the second check valve was opened, the oil feed section sealed has the advantage that improves piston velocity of motion.

Description

one-way acceleration valves and hydraulic system with one-way acceleration valves

Technical Field

The utility model relates to a pneumatic cylinder technical field refers in particular to one-way accelerating valves.

Background

The pneumatic cylinder is by the hydraulic pressure executive component who changes hydraulic pressure energy into mechanical energy, does straight reciprocating motion (or swing motion). the pneumatic cylinder comprises cylinder and cylinder cap, piston and piston rod, sealing device, buffer and exhaust apparatus basically, promotes the piston through letting in high-pressure oil to the piston cavity at relative two oil feed section intervals, realizes the reciprocating motion of piston, and in current pneumatic cylinder, direction high-pressure oil will get back to the oil storage bag again when the piston gos forward in addition, the utility model provides a kind of one-way accelerating valve, when the piston gos forward, the hydraulic oil that will order about the piston when reseing also is used for promoting the power flow that the piston gos forward, improves the functioning speed of piston.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing kind of one-way accelerating valves, have the advantage that improves piston velocity of motion.

The above technical purpose of the present invention can be achieved by the following technical solutions:

one-way accelerating valve comprises a valve body, wherein the valve body is provided with an oil inlet section, an oil outlet and an oil return section which are communicated with each other, the oil inlet section is internally provided with a one-way valve, the oil return section is internally provided with a second one-way valve, when the one-way valve is opened, the oil return section is closed, and when the second one-way valve is opened, the oil inlet section is closed.

Preferably, the check valve includes a push rod for sealing the oil inlet section, a elastic piece for providing push rod pulling force is arranged in the oil inlet section, and a sealing piece for sealing the inlet of the oil return section is arranged on the push rod.

Preferably, the top rod is provided with a mounting groove, and the th elastic element is arranged in the mounting groove.

Preferably, the closure element is arranged in a cone shape, and the end of the cross section of the closure element is towards the oil return section.

Preferably, the second one-way valve comprises a second closing member for closing the outlet of the oil return section, and a second elastic member for providing the elastic force of the second closing member is arranged in the oil return section.

Preferably, the side of the oil inlet section is provided with a th sealing piece.

Preferably, a second seal is arranged on the oil return section.

A hydraulic system with a one-way accelerating valve, comprising a cylinder body, a hydraulic cavity arranged in the cylinder body, a piston rod arranged in the hydraulic cavity, and a hydraulic system with a one-way accelerating valve,

the th oil inlet channel is arranged at the end of the cylinder body and is communicated with the hydraulic cavity, and the th oil inlet channel is communicated with an outlet of the oil return section;

and the second oil inlet channel is arranged at the other end of the cylinder body and is communicated with the hydraulic cavity, and the second oil inlet channel is connected with the oil outlet.

Preferably, the oil inlet section can be externally connected with a reversing valve, the reversing valve is connected with an th oil inlet channel, and a feed inlet of the reversing valve is externally connected with an oil storage tank.

To sum up, the utility model discloses following beneficial effect has:

1. when high-pressure oil flows into the valve body from the oil outlet, the second one-way valve is opened, the oil inlet section is closed, and then the high-pressure oil can only flow out from the outlet of the oil return section.

2. When high-pressure oil enters the valve body from the oil inlet section, the high-pressure oil extrudes the ejector rod, and when the ejector rod is separated from the oil inlet section, the ejector rod just seals the oil inlet of the oil return section, so that the high-pressure oil only can flow out from the oil outlet.

3. The cross section of the closing block towards the oil return section is smaller than the cross section of the closing block towards the push rod, and the sealing performance between the closing block and the oil return section is improved through the structure.

4. When the cylinder body works, high-pressure oil is firstly introduced into the oil inlet channel, the piston rod is extruded to the outside of the cylinder body through extrusion, then the high-pressure oil is stopped to be introduced into the oil inlet channel, the high-pressure oil is introduced into the oil inlet section of the one-way acceleration valve, the high-pressure oil extrudes the ejector rod, the ejector rod seals the oil return section, then the high-pressure oil flows from the oil outlet to the second oil inlet channel to reversely push the piston rod to slide, the piston rod is reset, high-pressure oil in the hydraulic cavity is discharged, then the high-pressure oil is stopped to be introduced into the one-way acceleration valve, the ejector rod is reset through the second elastic piece to seal the oil outlet, the high-pressure oil is introduced into the oil inlet channel again to push the piston rod to move, meanwhile, the high-pressure oil in the second oil inlet channel extrudes the sealing piece to enable the sealing piece to be separated from the oil outlet of the oil return section.

3. The th oil inlet channel and the second oil inlet channel are switched through the reversing valve, the complexity of the structure is reduced, and the stability is improved.

Drawings

FIG. 1 is a schematic structural view of a one-way acceleration valve of embodiment ;

FIG. 2 is a block diagram showing the connection between the one-way acceleration valve and the cylinder in the second embodiment;

FIG. 3 is a schematic structural view of a cylinder block in the second embodiment;

FIG. 4 is a schematic structural diagram of the one-way accelerating valve and the cylinder in the embodiment.

In the figure, 1, a cylinder body, 2, a piston rod, 3, th oil inlet channels, 4, second oil inlet channels, 5, a hydraulic cavity, 6, a one-way acceleration valve, 61, a valve body, 7, a second sealing element, 8, a push rod, 9, an oil inlet section, 10, an oil outlet, 11, an oil return section, 12, elastic element, 14, a second elastic element, 15, th sealing element, 16, a mounting groove, 17, a reversing valve, 18, an oil storage tank, 19, sealing element, 20, a second sealing element, 22, a push rod, 23, th one-way valve, 24 and a second one-way valve are arranged.

Detailed Description

This practice is further illustrated in by the following specific examples.

As shown in FIG. 1, kinds of one-way acceleration valves 6, each one-way acceleration valve 6 comprises a valve body 61, an oil inlet section 9, an oil outlet 10 and an oil return section 11 are arranged on the valve body 61, a one-way valve 23 is arranged in the oil inlet section, a second one-way valve 24 is arranged in the oil return section 11, when the th one-way valve 23 is opened, the oil return section 11 is closed, and when the second one-way valve 24 is opened, the oil inlet section 9 is closed.

The check valve 23 includes a push rod 8 for sealing the oil inlet section 9, the elastic piece 12 for providing the pull force of the push rod 8 is arranged in the oil inlet section 9, the push rod 8 is provided with a sealing piece 15 for sealing the inlet of the oil return section 11, when high-pressure oil enters the valve body 61 from the oil inlet section 9, the high-pressure oil extrudes the push rod 8, when the push rod 8 is separated from the oil inlet section 9, the push rod 8 just seals the oil inlet of the oil return section 11, so that the high-pressure oil can only flow out from the oil outlet 10.

It is worth to mention that the push rod 22 is provided with a mounting groove 16, the mounting groove 16 is disposed at the end of the principle oil outlet 10, the -th elastic member 12 is provided as a spring, and the spring is mounted in the mounting groove 16.

The th closing element 15 is provided with a conical table with a cross-sectional diameter towards the oil return section 11 that is smaller than the cross-sectional diameter of the th closing element 15 towards the top bar 8.

The second one-way valve 24 comprises a second closing part 7 for closing the outlet of the oil return section 11, the second closing part 7 is a steel ball, and a second elastic part 14 for providing elastic force of the closing part is arranged in the oil return section 11.

The th closing element 15 has a smaller cross section towards the return section 11 than the cross section of the closing piece towards the push rod 22, which improves the sealing between the th closing element 15 and the return section 11.

The valve body 61 is divided into two parts of shells at the oil inlet section 9, the two parts of shells are fixed through bolts,

the junction of the oil inlet section 9 and the housing is provided with a th seal 19.

The side of the oil return section 11 is provided with a second sealing element 20.

Example two:

as shown in fig. 2-4, a hydraulic system with a one-way acceleration valve includes a cylinder body 1, a hydraulic chamber 5 is provided in the cylinder body 1, a piston rod 2 is provided in the hydraulic chamber 5, and a piston plate abutting against the inner wall of the hydraulic chamber 5 is provided on the piston rod 2;

the th oil inlet channel 3 is arranged at the end of the cylinder body 1, the th oil inlet channel 3 is communicated with the hydraulic pressure cavity 5, and the th oil inlet channel 3 is arranged at the end of the piston plate.

And a second oil inlet channel 4 is arranged at the other end of the cylinder body 1, the second oil inlet channel 4 is communicated with the hydraulic cavity 5, and the second oil inlet channel 4 is positioned at the other end of the piston plate.

The oil outlet 10 is communicated with the second oil inlet channel 4, and the oil return section 11 is communicated with the th oil inlet channel 3.

The oil inlet section 9 can be externally connected with a reversing valve 17, the reversing valve is connected with the th oil inlet channel 3, and an oil storage tank 18 is externally connected with a feed inlet of the reversing valve 17.

The working process is as follows:

when the hydraulic cylinder works, high-pressure oil is firstly introduced into the th oil inlet channel 3, the piston rod 2 is extruded towards the outside of the cylinder body 1 through extrusion, then the introduction of the high-pressure oil into the th oil inlet channel 3 is stopped, the high-pressure oil is introduced into the oil inlet section 9 of the one-way acceleration valve 6, the high-pressure oil extrudes the ejector rod 8, the ejector rod 8 seals the oil return section 11, the high-pressure oil flows from the oil outlet 10 to the second oil inlet channel 4 to reversely push the piston rod 2 to slide, the piston rod 2 is reset, the high-pressure oil in the hydraulic cavity 5 is discharged, the introduction of the high-pressure oil into the one-way acceleration valve 6 is stopped, the ejector rod 8 is reset through the second elastic piece 14 to close the oil outlet 10, the high-pressure oil is introduced into the th oil inlet channel 3 again to push the piston rod 2 to move, the high-pressure oil in the second oil inlet channel 4 extrudes the second closing piece 7 to separate the oil outlet of the one-way acceleration valve 11, and the push rod 22 resets the oil inlet channel 3 due to accelerate the piston rod 2.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

The one-way accelerating valve is characterized by comprising a valve body (61), wherein an oil inlet section (9), an oil outlet (10) and an oil return section (11) which are communicated with each other are arranged on the valve body (61), a -th one-way valve (23) is arranged in the oil inlet section (9), a second one-way valve (24) is arranged in the oil return section (11), when the -th one-way valve (23) is opened, the oil return section (11) is closed, and when the second one-way valve (24) is opened, the oil inlet section (9) is closed.
2. The kind of one-way accelerating valve according to claim 1, characterized in that the kind of one-way valve (23) includes a push rod (8) closing the oil inlet section (9), a th elastic piece (12) providing the pulling force of the push rod (8) is arranged in the oil inlet section (9), and a th closing piece (15) closing the inlet of the oil return section (11) is arranged on the push rod (8).
3. kinds of one-way accelerating valves of claim 2, wherein the top bar (8) is installed with an installation slot (16), the th elastic element (12) is installed in the installation slot (16).
4. A one-way accelerating valve according to claim 2, characterized in that the closure (15) is arranged in a cone shape, the end of the closure (15) with a small cross section faces the oil return section (11).
5. A one-way accelerating valve according to claim 1, characterized in that the second one-way valve (24) includes a second closing member (7) closing the outlet of the oil return section (11), and a second elastic member (14) providing the elastic force of the second closing member (7) is provided in the oil return section (11).
6. A check acceleration valve according to claim 1, characterized in that the side of the oil inlet section (9) is provided with a sealing element (19).
7. A one-way accelerating valve according to claim 1, characterized in that the oil return section (11) is provided with a second seal (20).
8, A hydraulic system with one-way accelerating valve, comprising a cylinder body (1), a hydraulic chamber (5) is arranged in the cylinder body (1), a piston rod (2) is arranged in the hydraulic chamber (5), characterized in that the one-way accelerating valve according to any of claims 1-7 is adopted, and further comprising,

the th oil inlet channel (3) is arranged at the end of the cylinder body (1), and the th oil inlet channel (3) is communicated with the hydraulic cavity (5) and is communicated with an outlet of the oil return section (11);

and the second oil inlet channel (4) is arranged at the other end of the cylinder body (1), and the second oil inlet channel (4) is communicated with the hydraulic cavity (5) and is connected with the oil outlet (10).
9. type hydraulic system with one-way accelerating valve, according to claim 8, characterized in that the oil inlet section (9) can be externally connected with a reversing valve (17), the reversing valve (17) is connected with the oil inlet channel (3), and the inlet of the reversing valve (17) is externally connected with an oil storage tank (18).