CN217761506U - Reverse hydraulic one-way valve with piston for line sealing - Google Patents
Reverse hydraulic one-way valve with piston for line sealing Download PDFInfo
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- CN217761506U CN217761506U CN202221499648.4U CN202221499648U CN217761506U CN 217761506 U CN217761506 U CN 217761506U CN 202221499648 U CN202221499648 U CN 202221499648U CN 217761506 U CN217761506 U CN 217761506U
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- bin
- liquid inlet
- piston
- pull rod
- valve seat
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Abstract
The utility model belongs to the technical field of the check valve, specifically be a reverse hydraulic check valve who carries out line seal by piston, include: the valve seat is hollow, a movable bin is formed at one end in the valve seat, a liquid inlet bin is formed at the other end in the valve seat, and a plug is detachably connected to the end of the movable bin; the pull rod is movably inserted between the movable bin and the liquid inlet bin, a spring is arranged on the outer wall of one end of the pull rod, which is positioned in the movable bin, one end of the spring, which is far away from the liquid inlet bin, is connected with the end part of the pull rod, the other end of the spring is connected with the inner wall of the movable bin, a piston is arranged at the other end of the pull rod, and the piston is positioned at an opening on the lower side of the liquid inlet bin; and a liquid inlet hole communicated with the liquid inlet bin is formed in the side wall of the valve seat. Make the check valve can obtain better sealed effect when receiving reverse impact to because the structure that uses reverse installation makes the volume of check valve reduce, whole becomes compacter, be convenient for installation and follow and trade.
Description
Technical Field
The utility model relates to a check valve technical field specifically is a reverse hydraulic pressure check valve who carries out line sealing by the piston.
Background
In the existing hydraulic one-way valve structure, the structure is classified according to the sealing structure and can be divided into a spherical sealing structure, a conical surface sealing structure and a plane sealing structure, wherein the conical surface sealing structure is most widely used; the mounting mode is classified into forward mounting and reverse mounting, the spring is directly pushed by the piston to be forward mounted, and the spring with other structures is reverse structure and is forward mounted more commonly; there is no one-way valve structure in the market today that is installed backwards and is line sealed by a piston.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a carry out reverse hydraulic check valve that line is sealed by the piston to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a reverse hydraulic check valve with line sealing by a piston, comprising:
the valve seat is hollow, a movable bin is formed at one end in the valve seat, a liquid inlet bin is formed at the other end in the valve seat, and a plug is detachably connected to the end of the movable bin;
the pull rod is movably inserted between the movable bin and the liquid inlet bin, a spring is arranged on the outer wall of one end of the pull rod, which is positioned in the movable bin, one end of the spring, which is far away from the liquid inlet bin, is connected with the end part of the pull rod, the other end of the spring is connected with the inner wall of the movable bin, a piston is arranged at the other end of the pull rod, and the piston is positioned at an opening on the lower side of the liquid inlet bin;
and a liquid inlet hole communicated with the liquid inlet bin is formed in the side wall of the valve seat.
Furthermore, an inner sinking portion is arranged on one side, close to the plug, of the outer wall of the valve seat, and a first sealing ring is sleeved outside the inner sinking portion.
Furthermore, the pull rod is in sealing connection with the movable bin and the liquid inlet bin.
Furthermore, a spring groove is formed in the movable bin, and one end, close to the liquid inlet bin, of the spring is embedded into the spring groove.
Further, an opening on the lower side of the liquid inlet bin is provided with a sealing surface matched with the piston.
Furthermore, a second sealing ring is arranged on one side, close to the piston, of the outer wall of the valve seat.
Compared with the prior art, the beneficial effects of the utility model are that:
make the check valve can obtain better sealed effect when receiving reverse impact to because the structure of using reverse installation makes the volume of check valve reduce, whole becomes compacter, be convenient for install with trade.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a plug 1, a valve seat 2, a sealing ring I3, a pull rod 4, a spring 5, a sealing ring II 6, a piston 7, a spring groove 8 and a liquid inlet hole 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 efforts all belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1, the present invention provides a technical solution: a reverse hydraulic check valve with line sealing by a piston, comprising:
the valve seat 2 is hollow, a movable bin is formed at one end inside the valve seat 2, a liquid inlet bin is formed at the other end inside the valve seat 2, the end of the movable bin is detachably connected with the plug 1, the plug 1 is connected with the valve seat 2 through threads, the plug 1 is provided with a sealing ring, the sealing ring is extruded by screwing the plug 1, and therefore the plug 1 and the valve seat 2 are sealed.
The pull rod 4 is movably inserted between the moving bin and the liquid inlet bin, a spring 5 is arranged on the outer wall of one end, located in the moving bin, of the pull rod 4, one end, far away from the liquid inlet bin, of the spring 5 is connected with the end portion of the pull rod 4, the other end of the spring 5 is connected with the inner wall of the moving bin, a piston 7 is arranged at the other end of the pull rod 4, and the piston 7 is located at an opening in the lower side of the liquid inlet bin; the pull rod 4 is connected with the piston 7 through screw threads.
And a liquid inlet hole 9 communicated with the liquid inlet bin is formed in the side wall of the valve seat 2.
Preferably, an inward sinking portion is arranged on one side, close to the plug 1, of the outer wall of the valve seat 2, and a first sealing ring 3 is sleeved outside the inward sinking portion. And the valve seat 2 and the mounting part are sealed from the upper part through the arrangement of the first sealing ring 3.
Preferably, the pull rod 4 is in sealing connection with the movable bin and the liquid inlet bin. Pull rod 4 can slide between removing storehouse, feed liquor storehouse, and the junction high accuracy is sealed, avoids liquid to ooze from pull rod 4 and interstitial space.
Preferably, a spring groove 8 is formed in the movable bin, and one end, close to the liquid inlet bin, of the spring 5 is embedded in the spring groove 8. The spring 5 is always in the spring groove 8 in the compression and release processes, and the piston 7 is limited due to the existence of the spring groove 8.
Preferably, the opening at the lower side of the liquid inlet cabin is provided with a sealing surface matched with the piston 7.
Preferably, a second sealing ring 6 is arranged on one side, close to the piston 7, of the outer wall of the valve seat 2. The second sealing ring 6 seals the valve seat 2 and the installation position from the lower part.
The working principle is as follows: in the use process, when oil positively passes through the one-way valve (enters the liquid inlet bin on the lower side of the plug 1 from the liquid inlet hole 9), the oil acts on the piston 7 to push the piston 7 downwards, the contact surface of the piston 7 and the valve seat 2 is separated, the oil positively flows and flows out from the liquid inlet bin, and the pull rod 4 compresses the spring 5 due to the movement of the piston 7 driving the movement of the pull rod 4;
when oil supply is stopped, the pull rod 4 moves upwards under the action of the elastic force of the spring 5, and the piston 7 also moves upwards at the same time, so that the piston 7 is contacted with the valve seat 2 again to form sealing; when the oil flows reversely, the piston 7 and the valve seat 2 form a seal, and the oil cannot circulate.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, it will be obvious to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A reverse hydraulic check valve with line sealing by a piston, comprising:
the valve seat (2) is hollow, a moving bin is formed at one end in the valve seat (2), a liquid inlet bin is formed at the other end in the valve seat (2), and the end of the moving bin is detachably connected with the plug (1);
the liquid inlet device comprises a pull rod (4), wherein the pull rod (4) is movably inserted between a moving bin and a liquid inlet bin, a spring (5) is arranged on the outer wall of one end, located in the moving bin, of the pull rod (4), one end, far away from the liquid inlet bin, of the spring (5) is connected with the end portion of the pull rod (4), the other end of the spring is connected with the inner wall of the moving bin, a piston (7) is arranged at the other end of the pull rod (4), and the piston (7) is located at an opening on the lower side of the liquid inlet bin;
and a liquid inlet hole (9) communicated with the liquid inlet bin is formed in the side wall of the valve seat (2).
2. A piston-line sealed reverse hydraulic check valve as defined in claim 1 wherein: one side of the outer wall of the valve seat (2) close to the plug (1) is provided with an inner sinking portion, and a first sealing ring (3) is sleeved outside the inner sinking portion.
3. A reverse hydraulic check valve with line sealing by a piston as claimed in claim 1, wherein: the pull rod (4) is connected with the movable bin and the liquid inlet bin in a sealing way.
4. A piston-line sealed reverse hydraulic check valve as defined in claim 1 wherein: a spring groove (8) is formed in the movable bin, and one end, close to the liquid inlet bin, of the spring (5) is embedded into the spring groove (8).
5. A piston-line sealed reverse hydraulic check valve as defined in claim 1 wherein: and the opening at the lower side of the liquid inlet bin is provided with a sealing surface matched with the piston (7).
6. A piston-line sealed reverse hydraulic check valve as defined in claim 1 wherein: and a second sealing ring (6) is arranged on one side, close to the piston (7), of the outer wall of the valve seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221499648.4U CN217761506U (en) | 2022-06-13 | 2022-06-13 | Reverse hydraulic one-way valve with piston for line sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221499648.4U CN217761506U (en) | 2022-06-13 | 2022-06-13 | Reverse hydraulic one-way valve with piston for line sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217761506U true CN217761506U (en) | 2022-11-08 |
Family
ID=83892943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221499648.4U Active CN217761506U (en) | 2022-06-13 | 2022-06-13 | Reverse hydraulic one-way valve with piston for line sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217761506U (en) |
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2022
- 2022-06-13 CN CN202221499648.4U patent/CN217761506U/en active Active
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