CN211288299U - Ultrahigh pressure superposition type hydraulic control one-way valve - Google Patents
Ultrahigh pressure superposition type hydraulic control one-way valve Download PDFInfo
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- CN211288299U CN211288299U CN201922424204.9U CN201922424204U CN211288299U CN 211288299 U CN211288299 U CN 211288299U CN 201922424204 U CN201922424204 U CN 201922424204U CN 211288299 U CN211288299 U CN 211288299U
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Abstract
The utility model relates to a hydrovalve, in particular to superhigh pressure stack formula liquid accuse check valve. The valve comprises a valve body, a threaded valve seat and a slide valve, wherein one-way valve structures are arranged on two sides of the slide valve and comprise a threaded valve seat, a spring plug, a steel ball seat and a spring, the threaded valve seat is provided with a stepped shaft hole, the inner end side of the threaded valve seat is a small hole, the outer side of the threaded valve seat is a large hole, the steel ball seat is installed in the large hole in a matched mode, the steel ball seat is provided with a hard straight alloy steel ball, the diameter of the hard straight alloy steel ball is larger than the inner diameter of the small hole of the stepped shaft hole, the spring is sleeved on the. The utility model discloses having changed the structure that current stack formula liquid accuse check valve both sides adopted the check valve core, having adopted the steel ball seat of opening the steel ball groove, will set up the steel ball in the steel ball groove as with the contact of case, avoided steel ball seat and screw valve seat to receive the impact, produced the card valve phenomenon.
Description
Technical Field
The utility model relates to a hydrovalve, in particular to superhigh pressure stack formula liquid accuse check valve.
Background
Among present hydraulic pressure superhigh pressure system, the main problem of liquid accuse check valve is that working life is shorter, in case the one-way oil seal effect of check valve is inefficacy just causes scrapping of whole valve, the superhigh pressure liquid accuse check valve that chinese patent ZL201720010021.0 discloses, the both ends including the valve body are equipped with respectively that first oil is stifled, second oil is stifled, third oil is stifled and be equipped with the seal between the steel valve housing (the seal of here with the utility model provides a screw disk seat), and it has the horn mouth to open on the seal. The valve core is provided with a cone, the second oil plug is internally provided with a one-way valve core, the end part of the one-way valve core is provided with a positioning seat spring, and the valve cavity of the valve body is communicated with the oil duct. Adopt the steel valve sleeve of forced, first can prevent that the valve body hole warp under the superhigh pressure condition to cause the card valve, the sealed face processing technology of inside can be optimized to the second, ensures inside good leakproofness. The ultrahigh pressure hydraulic control one-way valve focuses on solving the deformation resistance of the valve and improving internal sealing. Under the working condition of ultrahigh pressure, the check valve is easy to damage and lose efficacy early and no improvement is made on maintenance.
Disclosure of Invention
Not enough to prior art, the utility model provides a superhigh pressure stack formula liquid accuse check valve.
The utility model adopts the technical proposal that: an ultrahigh pressure superposition type hydraulic control one-way valve comprises a valve body, a threaded valve seat and a slide valve, wherein two sides of the slide valve are provided with one-way valve structures, each one-way valve structure comprises a threaded valve seat, a spring plug, a steel ball seat and a spring, the threaded valve seat is provided with a stepped shaft hole, the inner end side of the threaded valve seat is a small hole, the outer side of the threaded valve seat is a large hole, the inner diameter of the small hole is larger than the outer diameter of a piston rod of the slide valve, the steel ball seat is installed in the large hole in a matched mode, a steel ball groove is formed in the inner end portion of the steel ball seat, a hard straight alloy steel ball is arranged in the steel ball groove, the diameter of the hard straight alloy steel ball is larger than the inner diameter of the small hole of the stepped shaft hole, the spring is sleeved on the outer side of the steel ball seat, the outer end side of the stepped shaft hole, pressing the hard alloy steel ball into the small hole of the stepped shaft hole.
The utility model discloses having changed the structure that current stack formula liquid accuse check valve both sides adopted the check valve core, having adopted the steel ball seat of opening the steel ball groove, will set up the steel ball in the steel ball groove as with the contact of case, avoided steel ball seat and screw valve seat to receive the impact, produced the card valve phenomenon, even self damages, also low-cost quick replacement. Furthermore, the steel balls are made of hard alloy materials, so that the self deformation resistance is stronger, and the service life is longer.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-valve body, 2-threaded valve seat, 21-stepped shaft hole, 3-spring plug, 31-spring mounting hole, 4-slide valve, 5-hard alloy steel ball, 6-steel ball seat, 7-spring and 8-threaded valve seat internal seal.
Detailed Description
As shown in figure 1, the ultrahigh pressure superposed hydraulic control check valve comprises a valve body 1, a slide valve 4 is arranged in a main valve hole of the valve body 1, the middle of the slide valve 4 is a piston part, two sides of the piston part are symmetrical piston rods, the two piston rods are respectively positioned in an A oil chamber and a B oil chamber, an A1 oil port and a B1 oil port are arranged on an upper mounting surface of the valve body 1, an A2 oil port and a B2 oil port are arranged on a lower mounting surface, the four oil ports are respectively provided with corresponding oil passages, wherein an A1 oil port is communicated with the A oil chamber, a B1 oil port is communicated with the B oil chamber, a screw valve seat 2 and a spring plug 3 are respectively arranged on two sides of the valve body 1 symmetrically, internal threads are arranged on two sides of the main valve hole of the valve body 1, the screw valve seat 2 is provided with external threads matched with the internal threads of the main valve hole to enable the screw valve seat to be connected with the valve body 1 in a threaded, the screw valve seat inner seal 8 is composed of an O-shaped ring and nylon retainer rings arranged on the left side and the right side, the combination can bear high-pressure oil in two directions and can improve the sealing effect, the screw valve seat 2 is provided with a stepped shaft hole 21, wherein the inner end side is a small hole, the outer side is a large hole, the inner diameter of the small hole is larger than the outer diameter of a sliding valve piston rod, a steel ball seat 6 is arranged in the large hole in a matched mode, a steel ball groove is arranged at the inner end part of the steel ball seat 6, a hard straight alloy steel ball 5 is arranged in the steel ball groove, the diameter of the hard straight alloy steel ball 5 is larger than the inner diameter of the small hole of the stepped shaft hole 21, a spring 7 is sleeved on the outer side of the steel ball seat 6, an inner thread is arranged on the outer end side of the stepped shaft hole 21, a spring plug 3 is screwed into the outer end side of the screw valve seat 2 through an outer thread, and pressing the hard alloy steel ball 5 on a small hole opening of the stepped shaft hole 21 to block oil paths of an A1 oil port-A2 oil port and a B1 oil port-B2 oil port.
When the oil port A1 is connected with high-pressure oil, the high-pressure oil enters the oil chamber A, jacks up the hard alloy steel balls and flows out of the oil path A2, and meanwhile, as the oil chamber A is in a high-pressure state, the slide valve 4 is pushed to move to the right side, and the piston rod on the right side jacks up the hard alloy steel balls, so that the oil paths B1-B2 are conducted in two directions; when the oil port B1 is connected with high-pressure oil, the oil passages A1-A2 are communicated in two directions in the same way. When one side of the slide valve is subjected to high pressure and the steel ball at the other side is pushed open, the part bearing the impact force is mainly the hard alloy steel ball which is difficult to damage due to the material factor of the part, and the steel ball can rotate freely due to being only placed in the steel ball groove, so that the situation that the same surface is repeatedly stressed is avoided, and the service life of the steel ball is further prolonged.
Claims (1)
1. The utility model provides an ultrahigh pressure stack formula liquid accuse check valve, includes valve body (1), screw disk seat (2), slide valve (4), the slide valve both sides are provided with the check valve structure, characterized by: the check valve structure comprises a threaded valve seat (2), a spring plug (3), a steel ball seat (6) and a spring (7), wherein the threaded valve seat (2) is provided with a stepped shaft hole (21), the inner end side is provided with a small hole, the outer side is provided with a large hole, the inner diameter of the small hole is larger than the outer diameter of a piston rod of the sliding valve, the steel ball seat (6) is installed in the large hole in a matched mode, a steel ball groove is formed in the inner end part of the steel ball seat (6), a rigid alloy steel ball (5) is arranged in the steel ball groove, the diameter of the rigid alloy steel ball (5) is larger than the inner diameter of the small hole of the stepped shaft hole (21), the spring (7) is sleeved on the outer side of the steel ball seat (6), the outer end side of the stepped shaft hole (21) is provided with an internal thread, the spring plug (3) is screwed into the outer end, under the condition of no external force, the spring (7) applies inward thrust to the steel ball seat (6) to press the hard alloy steel ball (5) to a small hole opening of the stepped shaft hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922424204.9U CN211288299U (en) | 2019-12-30 | 2019-12-30 | Ultrahigh pressure superposition type hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922424204.9U CN211288299U (en) | 2019-12-30 | 2019-12-30 | Ultrahigh pressure superposition type hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211288299U true CN211288299U (en) | 2020-08-18 |
Family
ID=72012252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922424204.9U Active CN211288299U (en) | 2019-12-30 | 2019-12-30 | Ultrahigh pressure superposition type hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211288299U (en) |
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2019
- 2019-12-30 CN CN201922424204.9U patent/CN211288299U/en active Active
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