CN216478109U

CN216478109U - Cushion valve for hydraulic system

Info

Publication number: CN216478109U
Application number: CN202123059270.4U
Authority: CN
Inventors: 钱世展
Original assignee: Wuxi Xinyuan Oil Pump Co ltd
Current assignee: Wuxi Xinyuan Oil Pump Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-10
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to the technical field of cushion valves, and discloses a cushion valve for a hydraulic system, which solves the problem that a spring is easy to damage in the spring compression process when the liquid flow pressure is large, and comprises a valve body, wherein a liquid outlet is arranged at the top end of the valve body, a liquid inlet is arranged at one end of the valve body, a first cushion component is arranged in the valve body, a second cushion component is arranged in the valve body, the first cushion component comprises a limit ring arranged at one side of the liquid outlet, and the limit ring is fixedly connected with the inner wall of the valve body; the utility model discloses, at work, when the removal through setting up, inside first clamp plate promoted the hydraulic oil of one side and entered into the turning block through the intercommunication groove to make second clamp plate pressurized, make the compression of second spring, because the pipe diameter of side piece is less, make the inside feed liquor of turning block slower, at this moment under the hydraulic oil velocity of flow is slower and the effect of second spring elasticity, cushion the liquid of getting into, further improve buffering effect.

Description

Cushion valve for hydraulic system

Technical Field

The utility model belongs to the technical field of the cushion valve, specifically be a cushion valve for hydraulic system.

Background

In a conventional hydraulic control system, such as a hydraulic system of a crane, forward and reverse rotation circuits of a hydraulic motor have a symmetrical structure. The crane lifts when the hydraulic motor rotates forwards; the crane descends when the hydraulic motor reverses. After the crane lifts a heavy object, the load of the heavy object is supported by high-pressure oil in the hydraulic motor from the moment of hovering to the moment of descending, and due to the change of the pressure of the hydraulic motor, a serious impact can be generated on a hydraulic system and the hydraulic motor instantly, so that the service life of the hydraulic motor is damaged. The common solution is to connect a flow-limiting buffer valve in series or a buffer valve absorbing excessive flow in parallel to the oil path of the hydraulic motor.

Generally, a cushion valve adopts a spring to cushion liquid flow, but when the liquid flow pressure is high, the spring is easy to damage in the compression process of the spring, so that a valve body is damaged.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a cushion valve for hydraulic system, when effectual solution liquid stream pressure is great, in spring compression process, easily cause the damaged problem of spring.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cushion valve for hydraulic system, includes the valve body, the liquid outlet has been seted up on the top of valve body, and the inlet is installed to the one end of valve body, and the internally mounted of valve body has first buffering subassembly, and the internally mounted of valve body has the second to cushion the subassembly.

Preferably, first buffering subassembly is including installing in the spacing ring of liquid outlet one side, the inner wall fixed connection of spacing ring and valve body, and one side of spacing ring is equipped with first clamp plate, first clamp plate and valve body sliding connection, and one side of install first spring, the one end and the valve body fixed mounting of first spring.

Preferably, the second buffering subassembly is including seting up in the inside mounting groove of valve body, and the inside rotation of mounting groove is connected with the turning block, and the side piece is installed to one side of turning block, and the side piece runs through to inside the valve body.

Preferably, the communicating groove has been seted up to the inside of side piece, and the communicating groove runs through to the turning block inside, and the internally mounted of turning block has the second clamp plate, and the second spring is installed to one side of second clamp plate, the one end and the turning block fixed connection of second spring, and one side packing of first clamp plate has hydraulic oil, and the internally mounted of mounting groove has the third buffering subassembly.

Preferably, the third buffering component comprises conducting strips symmetrically arranged on the inner wall of the mounting groove, the conducting strips are semicircular, an electromagnet is arranged on one side of the valve body, a magnetic block is arranged on one side of the first pressing plate, and the two conducting strips are electrically connected with the electromagnet.

Preferably, conducting rods are symmetrically installed at the top end and the bottom end of the rotating block, two ends of each conducting rod are in contact with the two conducting strips, impellers are installed on the inner wall of the communicating groove at equal angles, and the impellers are inclined.

Preferably, the two sides of the conducting rod are symmetrically provided with a first magnetic plate and a second magnetic plate, the first magnetic plate and the second magnetic plate are arranged inside the valve body, and the magnetism of the first magnetic plate is opposite to that of the second magnetic plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1) during work, when the hydraulic oil feeding device moves through the arranged first pressing plate, the first pressing plate pushes hydraulic oil on one side to enter the rotating block through the communicating groove, so that the second pressing plate is pressed, the second spring is compressed, liquid feeding in the rotating block is slow due to the fact that the pipe diameter of the side block is small, at the moment, the entering liquid is buffered under the action of slow flow rate of the hydraulic oil and the elastic force of the second spring, and the buffering effect is further improved;

2) the rotating block rotates at work, the rotating block rotates at the moment to enable the conducting rod to cut the magnetic induction lines generated by the first magnetic plate and the second magnetic plate, so that the conducting rod generates induction current, the conducting rod is transmitted to the interior of the electromagnet through the conducting bar, the electromagnet generates repulsion force for the magnetic block, the moving speed of the first pressing plate is slowed down, further buffering is conducted on liquid flow indirectly, and the buffering effect is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the valve body of the present invention;

FIG. 3 is a schematic structural view of a turning block of the present invention;

fig. 4 is a schematic structural view of the first magnetic plate of the present invention.

In the figure: 1. a valve body; 2. a liquid outlet; 3. a liquid inlet; 4. a first buffer assembly; 401. a limiting ring; 402. a first platen; 403. a first spring; 5. a second buffer assembly; 501. mounting grooves; 502. rotating the block; 503. a side block; 504. a communicating groove; 505. a second platen; 506. a second spring; 6. a third buffer assembly; 601. an electromagnet; 602. a magnetic block; 603. a conductive strip; 604. a conductive rod; 605. an impeller; 606. a first magnetic plate; 607. a second magnetic plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Embodiment one, given by fig. 1-4, the utility model discloses a valve body 1, liquid outlet 2 has been seted up on the top of valve body 1, inlet 3 is installed to the one end of valve body 1, the internally mounted of valve body 1 has first buffering subassembly 4, the internally mounted of valve body 1 has second buffering subassembly 5, first buffering subassembly 4 is including installing in the limiting plate 401 of 2 one sides of liquid outlet, the inner wall fixed connection of limiting plate 401 and valve body 1, one side of limiting plate 401 is equipped with first clamp plate 402,

first clamp plate

402 and 1 sliding connection of valve body, first spring 403 is installed to one side of first clamp plate 402, the one end and the valve body 1 fixed mounting of first spring 403.

In the second embodiment, on the basis of the first embodiment, the second buffer assembly 5 includes an installation groove 501 arranged inside the valve body 1, a rotating block 502 is rotatably connected inside the installation groove 501, a side block 503 is installed on one side of the rotating block 502, the side block 503 penetrates inside the valve body 1, a communication groove 504 is formed inside the side block 503, the communication groove 504 penetrates inside the rotating block 502, a second pressing plate 505 is installed inside the rotating block 502, a second spring 506 is installed on one side of the second pressing plate 505, one end of the second spring 506 is fixedly connected with the rotating block 502, one side of the first pressing plate 402 is filled with hydraulic oil, and a third buffer assembly 6 is installed inside the installation groove 501;

when first clamp plate 402 removed, the hydraulic oil that promotes first clamp plate 402 one side entered into turning block 502 through intercommunication groove 504 inside to make second clamp plate 505 pressurized, make second spring 506 compress, because the pipe diameter of side piece 503 is less, make the inside feed liquor of turning block 502 slower, at this moment under the slower and second spring 506 spring action of hydraulic oil velocity of flow, cushioned the liquid that gets into, further improved buffering effect.

Third embodiment, on the basis of the second embodiment, the third buffer assembly 6 includes conducting strips 603 symmetrically installed on the inner wall of the installation groove 501, the conducting strips 603 are in a half-circle shape, an electromagnet 601 is installed on one side of the valve body 1, a magnetic block 602 is installed on one side of the first pressing plate 402, the two conducting strips 603 are electrically connected with the electromagnet 601, conducting rods 604 are symmetrically installed at the top end and the bottom end of the rotating block 502, two ends of the conducting rod 604 are in contact with the two conducting strips 603, impellers 605 are installed on the inner wall of the communication groove 504 at equal angles, the impellers 605 are inclined, a first magnetic plate 606 and a second magnetic plate 607 are symmetrically installed on two sides of the conducting rod 604, the first magnetic plate 606 and the second magnetic plate 607 are installed inside the valve body 1, and the magnetism of the first magnetic plate 606 is opposite to that of the second magnetic plate 607;

when hydraulic oil passes through the communicating groove 504, impact is generated on the impeller 605, so that the rotating block 502 is driven to rotate, at the moment, the rotating block 502 rotates to enable the conducting rod 604 to cut magnetic induction lines generated by the first magnetic plate 606 and the second magnetic plate 607, so that the conducting rod 604 generates induction current, and the induction current is transmitted to the inside of the electromagnet 601 through the conducting bar 603, so that the electromagnet 601 generates repulsion force on the magnetic block 602, the moving speed of the first pressing plate 402 is slowed down, and further buffering is indirectly performed on liquid flow.

The working principle is as follows: when the valve works, firstly, after liquid enters the valve body 1 from the liquid inlet 3 and needs to impact the first pressing plate 402, the liquid is discharged from the liquid outlet 2, and at the moment, the first pressing plate 402 is impacted, so that the first spring 403 is compressed to form buffering;

when the first pressing plate 402 moves, hydraulic oil on one side of the first pressing plate 402 is pushed to enter the rotating block 502 through the communicating groove 504, so that the second pressing plate 505 is pressed, the second spring 506 is compressed, liquid inlet in the rotating block 502 is slow due to the small pipe diameter of the side block 503, and at the moment, the entering liquid is buffered under the action of slow flow rate of the hydraulic oil and the elastic force of the second spring 506, so that the buffering effect is further improved;

when hydraulic oil passes through the communicating groove 504, produce the impact to impeller 605, thereby drive turning block 502 and rotate, turning block 502 rotates this moment and makes conducting rod 604 cut the magnetic induction line that first magnetic sheet 606 and second magnetic sheet 607 produced, thereby make conducting rod 604 produce induced current, and transmit to inside the electro-magnet 601 through conducting strip 603, thereby make electro-magnet 601 produce the repulsion to magnetic path 602, thereby slow down the translation rate of first clamp plate 402, thereby further cushion the liquid stream indirectly, thereby improve buffering effect.

Claims

1. The utility model provides a cushion valve for hydraulic system, includes valve body (1), its characterized in that: liquid outlet (2) have been seted up on the top of valve body (1), inlet (3) are installed to the one end of valve body (1), and the internally mounted of valve body (1) has first buffering subassembly (4), and the internally mounted of valve body (1) has second buffering subassembly (5).

2. The cushion valve for a hydraulic system of claim 1, wherein: first buffer unit (4) is including installing spacing ring (401) in liquid outlet (2) one side, the inner wall fixed connection of spacing ring (401) and valve body (1), and one side of spacing ring (401) is equipped with first clamp plate (402), first clamp plate (402) and valve body (1) sliding connection, and first spring (403) are installed to one side of first clamp plate (402), the one end and valve body (1) fixed mounting of first spring (403).

3. The cushion valve for a hydraulic system according to claim 1, wherein: the second buffer assembly (5) comprises a mounting groove (501) arranged inside the valve body (1), a rotating block (502) is connected to the mounting groove (501) in a rotating mode, a side block (503) is installed on one side of the rotating block (502), and the side block (503) penetrates into the valve body (1).

4. A cushion valve for a hydraulic system as defined in claim 3, wherein: the utility model discloses a hydraulic buffer structure, including side piece (503), intercommunication groove (504) have been seted up to the inside of side piece (503), intercommunication groove (504) run through to turning block (502) inside, the internally mounted of turning block (502) has second clamp plate (505), second spring (506) are installed to one side of second clamp plate (505), the one end and the turning block (502) fixed connection of second spring (506), one side packing of first clamp plate (402) has hydraulic oil, the internally mounted of mounting groove (501) has third buffer unit (6).

5. The cushion valve for a hydraulic system according to claim 4, wherein: the third buffer assembly (6) comprises conducting strips (603) symmetrically arranged on the inner wall of the mounting groove (501), the conducting strips (603) are semicircular, an electromagnet (601) is arranged on one side of the valve body (1), a magnetic block (602) is arranged on one side of the first pressing plate (402), and the two conducting strips (603) are electrically connected with the electromagnet (601).

6. The cushion valve for a hydraulic system according to claim 4, wherein: conducting rods (604) are symmetrically arranged at the top end and the bottom end of the rotating block (502), two ends of each conducting rod (604) are in contact with two conducting strips (603), impellers (605) are arranged on the inner wall of the communicating groove (504) at equal angles, and the impellers (605) are inclined.

7. The cushion valve for a hydraulic system of claim 6, wherein: the two sides of the conducting rod (604) are symmetrically provided with a first magnetic plate (606) and a second magnetic plate (607), the first magnetic plate (606) and the second magnetic plate (607) are installed inside the valve body (1), and the magnetism of the first magnetic plate (606) is opposite to that of the second magnetic plate (607).