CN217381087U - Hydraulic control one-way valve capable of being installed in stacked mode - Google Patents
Hydraulic control one-way valve capable of being installed in stacked mode Download PDFInfo
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- CN217381087U CN217381087U CN202221482561.6U CN202221482561U CN217381087U CN 217381087 U CN217381087 U CN 217381087U CN 202221482561 U CN202221482561 U CN 202221482561U CN 217381087 U CN217381087 U CN 217381087U
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Abstract
The utility model provides a hydraulic control one-way valve capable of being installed in a superposition mode, which comprises a valve body and a connecting structure, wherein a central hole is arranged in the valve body, a valve core is arranged in the middle of the central hole in a sliding mode, two sides of the valve core are both connected with one end of a first spring, the other end of the first spring is connected with a valve sleeve, a mandril is arranged in the first spring, the mandril is connected with the valve core, and the two first springs are used for resetting the valve body; the hydraulic control one-way valve and the electromagnetic reversing valve are installed in a superposed mode, the structures such as a hose III and a hose IV between the hydraulic control one-way valve and the electromagnetic reversing valve are omitted, the original pipeline connection mode is changed, the installation space is simplified, and the space utilization rate is improved; the invention is installed in a superposition mode, so that connecting hoses are reduced, and further, the pressure loss of a pipeline is reduced; the invention is installed in a superposition mode, so that the leakage of oil liquid caused by pipeline connection is reduced, and further, the accidental medical accidents are reduced.
Description
Technical Field
The utility model relates to a check valve technical field, in particular to pilot operated check valve that can install through stack formula.
Background
The pilot operated check valve is a valve which makes the check valve reversely flow by controlling the pressure of fluid. The hydraulic control one-way valve is provided with a control oil way, when the control oil way is not communicated with pressure oil, the hydraulic control one-way valve works like a common one-way valve, and the pressure oil only flows from the oil inlet to the oil outlet and cannot flow reversely. The table top of the operating table is in a self-locking state. When control pressure is input into the control oil path, the piston ejector rod moves under the action of pressure oil, the ejector rod is used for ejecting the one-way valve core, the oil inlet and the oil outlet are communicated, and the pressure oil can reversely circulate.
The working principle and the pipeline connection of the existing hydraulic control valve are shown in fig. 1, high-pressure oil discharged by a power source 1 flows to an electromagnetic directional valve 3 through a first hose 2, the upper end of the electromagnetic directional valve 3 is electrically commutated, the high-pressure oil flows into an upper cavity of an oil cylinder 7 through the hydraulic directional valve 5 and a fifth hose 6 by connecting an A1 port of the hydraulic directional check valve 5 through an A oil outlet of the electromagnetic directional valve 3 through a third hose 4, the hydraulic directional check valve 5 acts internally, an A1 port is communicated with an A2 port, the oil flows into an upper cavity of the oil cylinder 7 through the hydraulic directional check valve 5 and the fifth hose 6, the oil in a lower cavity of the oil cylinder 7 flows to a B2 port of the hydraulic directional check valve 5 through a sixth hose 8, a B2 port is communicated with a B1 port, flows into the electromagnetic directional valve 3 through a fourth hose 9, and finally flows back to the power source 1 through a second hose 10, and the oil cylinder 7 moves downwards. The lower end of the electromagnetic directional valve 3 is electrified to be reversed, high-pressure oil passes through a port B of the electromagnetic directional valve 3 and is connected with a port B1 of the hydraulic control one-way valve 5 through a hose III 4, the internal of the hydraulic control one-way valve 5 moves, a port B1 passes through a port B2, the oil flows into the lower cavity of the oil cylinder 7 through a hose VI 8, the oil in the upper cavity of the oil cylinder 7 flows to a port A2 of the hydraulic control one-way valve 5 through a hose V6, the oil flows into the electromagnetic directional valve 3 through a hose III 4, finally flows back to the power source 1 through a hose II 10, and the oil cylinder 7 moves upwards. When the electromagnets at the two ends of the electromagnetic directional valve 3 are not electrified, the oil cylinder 7 is in a self-locking state.
The existing pilot operated check valves also have a number of disadvantages: 1. the installation form in the operation table hydraulic system is hose connection, and the overall arrangement space is additionally increased 2. this mode can cause the pipeline pressure loss of hydraulic system because of the increase of hose length 3. the external leakage of fluid can appear in the junction of hose and solenoid directional valve, causes unexpected medical accident.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic control check valve that can install through stack formula to the installation form among the operating table hydraulic system among the solution prior art is the hose connection, and the extra overall arrangement space that has increased causes hydraulic system's pipeline pressure loss, and the leakage of fluid can appear in the junction of hose and solenoid directional valve, causes the problem of unexpected medical malpractice. The specific technical scheme is as follows:
in order to achieve the above and other related purposes, the utility model provides a hydraulic control one-way valve that can install through stack formula, including valve body and connection structure, be equipped with the centre bore in the valve body, the middle part of centre bore is slided and is provided with the case, the both sides of case all are connected with the one end of first spring, the other end of first spring is connected with the valve barrel, be equipped with the ejector pin in the first spring, the ejector pin with the case is connected, two the first spring is used for the restoration of valve body;
two first oil inlet holes are formed in the side wall of the valve body, one end of each first oil inlet hole is used for being connected with an oil outlet of the electromagnetic directional valve, the other end of each first oil inlet hole is used for being connected with the central hole, and the first oil inlet holes and one end communicated with the central hole are formed between the valve sleeve and the valve core;
the valve sleeve is arranged in the central hole, a second oil inlet hole is formed in the valve sleeve, a lock valve core is connected in the second oil inlet hole in a sliding mode, one end, far away from the ejector rod, of the lock valve core is connected with a second spring, and one side, far away from the valve body, of the valve sleeve is connected with a threaded sleeve;
the two screw sleeves are respectively arranged at two ends of the central hole, the screw sleeves are provided with mounting holes and third oil inlet holes, the third oil inlet holes are respectively communicated with the second oil inlet holes and the mounting holes, the second spring is arranged in the third oil inlet holes and is used for pushing the lock valve core, so that the lock valve core blocks the second oil inlet holes, and the mounting holes are used for being externally connected with an oil pipe;
the valve body is fixedly arranged on the electromagnetic directional valve through the connecting structure, so that two oil outlets of the electromagnetic directional valve are communicated with the two first oil inlet holes.
Preferably, the connecting structure comprises a fixing screw, a threaded hole and a through hole, the threaded hole is formed in the outer side wall of the valve body, the through hole is formed in the electromagnetic directional valve, the threaded hole corresponds to the through hole, and the fixing screw penetrates through the through hole and is in threaded connection with the threaded hole.
Preferably, there are three sets of the connection structures, and the three sets of the connection structures are arranged in an equilateral triangle.
Preferably, a first sealing ring is arranged at the joint of the first oil inlet hole and an oil outlet of the electromagnetic directional valve.
Preferably, a second sealing ring is arranged between the valve sleeve and the central hole, and a third sealing ring is arranged between the valve sleeve and the threaded sleeve.
Preferably, a fourth sealing ring is arranged between the lock valve core and the second oil inlet hole.
The utility model provides a pair of hydraulic control check valve that can install through stack formula has following beneficial effect:
by arranging the connecting structure, the first oil inlet hole, the central hole and the like, the superposition type installation between the hydraulic control one-way valve and the electromagnetic reversing valve is realized, the structures of a hose III, a hose IV and the like between the hydraulic control one-way valve and the electromagnetic reversing valve are omitted, the original pipeline connecting mode is changed, the installation space is simplified, and the space utilization rate is improved; the invention is installed in a superposition way, so that connecting hoses are reduced, and further, the pressure loss of a pipeline is reduced; the invention is installed in a superposition mode, and reduces oil leakage caused by pipeline connection, thereby reducing unexpected medical accidents.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a prior art mounting structure of a pilot operated check valve in a pilot operated system;
fig. 2 is an installation structure diagram of the hydraulic control check valve which can be installed in a stacked manner in the hydraulic control system provided by the invention;
fig. 3 is a front view of the connection between the hydraulic control check valve and the electromagnetic directional valve which can be installed in a stacked manner according to the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
fig. 6 is a structural diagram of a hydraulic control check valve which can be installed in a stacked manner according to the present invention;
wherein the reference numerals of figures 1-6 are as follows:
a power source 1; a first hose 2; an electromagnetic directional valve 3; a third hose 4;
the hydraulic control check valve comprises a hydraulic control check valve 5, a valve body 51, a center hole 511, a valve core 512, a first spring 513, a valve sleeve 514, a mandril 515, a first oil inlet 516, a second oil inlet 517, a second spring 518, a thread sleeve 519, a mounting hole 5191, a third oil inlet 5192, a connecting structure 52, a fixing screw 521, a threaded hole 522, a through hole 523, a first sealing ring 53, a second sealing ring 54, a third sealing ring 55, a fourth sealing ring 56 and a lock valve core 57;
a fifth hose 6; an oil cylinder 7; a sixth hose 8; a fourth hose 9; and a second hose 10.
Detailed Description
The present invention provides a pilot operated check valve which can be installed in a stacked manner, and is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
In the description of the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
The utility model discloses a core thought lies in providing a liquid accuse check valve that can install through stack formula, through setting up connection structure, first inlet port and centre bore isotructure, has realized the stack formula installation between liquid accuse check valve and solenoid directional valve, has saved the hose three and the hose four isotructures between liquid accuse check valve and solenoid directional valve, has reduced the overall arrangement space, has solved because the increase of hose length can cause hydraulic system's pipeline loss of pressure.
Therefore, the utility model provides a hydraulic control check valve 5 that can install through stack formula, as shown in fig. 2-6, including valve body 51 and connection structure 52, be equipped with centre bore 511 in the valve body 51, the middle part of centre bore 511 slides and is provided with case 512, the both sides of case 512 are connected with the one end of first spring 513, the other end of first spring 513 is connected with 514, be equipped with ejector pin 515 in the first spring 513, ejector pin 515 with the case 512 is connected, two first springs 513 are used for the restoration of valve body 51;
two first oil inlet holes 516 are formed in the side wall of the valve body 51, one end of each first oil inlet hole 516 is used for connecting an oil outlet of the electromagnetic directional valve 3, the other end of each first oil inlet hole 516 is used for connecting the central hole 511, and the end, communicated with the central hole 511, of each first oil inlet hole 516 is formed between the valve sleeve 514 and the valve core 512;
the valve sleeve 514 is arranged in the central hole 511, a second oil inlet 517 is arranged in the valve sleeve 514, a lock valve core 57 is connected in the second oil inlet 517 in a sliding manner, one end, far away from the mandril 515, of the lock valve core 57 is connected with a second spring 518, and one side, far away from the valve body 51, of the valve sleeve 514 is connected with a threaded sleeve 519;
the two screw sleeves 519 are respectively arranged at two ends of the central hole 511, a mounting hole 5191 and a third oil inlet 5192 are formed in each screw sleeve 519, the third oil inlet 5192 is respectively communicated with the second oil inlet 517 and the mounting hole 5191, the second spring 518 is arranged in the third oil inlet 5192, the second spring 518 is used for pushing the lock valve core 57, so that the lock valve core 57 blocks the second oil inlet 517, and the mounting hole 5191 is used for externally connecting an oil pipe;
the valve body 51 is fixedly mounted on the electromagnetic directional valve 3 through the connecting structure 52, so that two oil outlets of the electromagnetic directional valve 3 are communicated with two oil inlet holes 516.
Further, the connection structure 52 includes a fixing screw 521, a threaded hole 522 and a through hole 523, the threaded hole 522 is provided on an outer side wall of the valve body 51, the through hole 523 is provided on the electromagnetic directional valve 3, the threaded hole 522 corresponds to the through hole 523, and the fixing screw 521 passes through the through hole 523 and is screwed in the threaded hole 522.
Furthermore, there are three sets of the connection structures 52, and the three sets of the connection structures 52 are arranged in an equilateral triangle, so as to improve the connection stability.
Further, a first sealing ring 53 is arranged at the joint of the first oil inlet 516 and the oil outlet of the electromagnetic directional valve 3, so that the oil is prevented from leaking outwards.
Further, a second sealing ring 54 is disposed between the valve sleeve 514 and the central hole 511, and a third sealing ring 55 is disposed between the valve sleeve 514 and the screw sleeve 519, so as to prevent oil from leaking outwards.
Further, a fourth sealing ring 56 is disposed between the lock valve core 57 and the second oil inlet 517, so as to prevent oil from leaking outwards.
The working principle of the hydraulic control one-way valve capable of being installed in a superposition mode is as follows:
high-pressure oil discharged by the power source 1 is delivered to a port P of the electromagnetic directional valve 3 through a hose I2,
one end of the electromagnetic directional valve 3 is electrified for reversing, high-pressure oil reaches a first oil inlet 516 of the hydraulic control one-way valve 5 from one oil outlet of the electromagnetic directional valve 3, flows into the upper cavity of the oil cylinder 7 through a hose five 6, and oil in the lower cavity of the oil cylinder 7 flows to the hydraulic control one-way valve 5 and a port B of the electromagnetic directional valve 3 through a hose six 8 and finally flows back to the power source 1 through a hose two 10; specifically, when the Y1 end of the electromagnetic directional valve 3 is electrically commutated, high-pressure oil reaches the first oil inlet 516 on the upper side of the hydraulic control one-way valve 5 from the oil outlet on the upper side of the electromagnetic directional valve 3, and passes through the second oil inlet 517 on the upper side of the valve core 512, the hydraulic pressure overcomes the pre-pressure of the second spring 518 on the upper side, the lock valve core 57 is ejected away from the valve sleeve 514, and the oil reaches the hose five 6 through the screw sleeve 519 and flows into the upper cavity of the oil cylinder 7 through the hose five 6; the oil in the lower cavity of the oil cylinder 7 reaches the lower end of the hydraulic control one-way valve 5 through the hose six 8 and reaches the 15 lock valve core 57 through the screw sleeve 519 below, at this time, because a part of the oil flowing in from the electromagnetic directional valve 3 acts on the top end of the valve core 512, the pre-pressure of the first spring 513 is overcome, so that the valve core 512 slides downwards, the valve core 512 pushes the mandril 515 to jack the lock valve core 57 away from the valve sleeve 514, so that the oil in the hose six 8 flows into the port B of the electromagnetic directional valve 3 through the first oil inlet 516 below, and finally flows back to the power source 1 through the hose two 10, and the oil cylinder 7 moves downwards;
similarly, the end of the electromagnetic directional valve 3Y2 is electrified to change the direction, and the oil cylinder 7 moves upwards; when the electromagnets at the two ends are not electrified, no oil flows in the superposed hydraulic control one-way valve 5, and the oil cylinder 7 is in a self-locking state.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The hydraulic control one-way valve capable of being installed in a superposition mode is characterized by comprising a valve body (51) and a connecting structure (52), wherein a central hole (511) is formed in the valve body (51), a valve core (512) is arranged in the middle of the central hole (511) in a sliding mode, two sides of the valve core (512) are connected with one end of a first spring (513), the other end of the first spring (513) is connected with a valve sleeve (514), a push rod (515) is arranged in the first spring (513), the push rod (515) is connected with the valve core (512), and the two first springs (513) are used for resetting of the valve body (51);
two first oil inlet holes (516) are formed in the side wall of the valve body (51), one end of each first oil inlet hole (516) is used for being connected with an oil outlet of the electromagnetic reversing valve (3), the other end of each first oil inlet hole is used for being connected with the central hole (511), and one end, communicated with the central hole (511), of each first oil inlet hole (516) is formed between the valve sleeve (514) and the valve core (512);
the valve sleeve (514) is arranged in the central hole (511), a second oil inlet hole (517) is formed in the valve sleeve (514), a lock valve core (57) is connected in the second oil inlet hole (517) in a sliding mode, one end, far away from the ejector rod (515), of the lock valve core (57) is connected with a second spring (518), and one side, far away from the valve body (51), of the valve sleeve (514) is connected with a threaded sleeve (519);
the two screw sleeves (519) are respectively arranged at two ends of the central hole (511), a mounting hole (5191) and a third oil inlet hole (5192) are formed in each screw sleeve (519), the third oil inlet hole (5192) is respectively communicated with the second oil inlet hole (517) and the mounting hole (5191), the second spring (518) is arranged in the third oil inlet hole (5192), the second spring (518) is used for pushing the lock valve core (57), so that the lock valve core (57) blocks the second oil inlet hole (517), and the mounting hole (5191) is used for externally connecting an oil pipe;
the valve body (51) is fixedly mounted on the electromagnetic reversing valve (3) through the connecting structure (52), so that two oil outlets of the electromagnetic reversing valve (3) are communicated with the two first oil inlets (516).
2. A pilot operated check valve installable by superposition as claimed in claim 1,
the connecting structure (52) comprises a fixing screw (521), a threaded hole (522) and a through hole (523), the threaded hole (522) is formed in the outer side wall of the valve body (51), the through hole (523) is formed in the electromagnetic reversing valve (3), the threaded hole (522) corresponds to the through hole (523), and the fixing screw (521) penetrates through the through hole (523) and is in threaded connection with the inside of the threaded hole (522).
3. A pilot operated check valve installable by superposition as claimed in claim 2,
the connecting structures (52) are provided with three groups, and the three groups of connecting structures (52) are arranged in an equilateral triangle shape.
4. A pilot operated check valve installable by superposition as claimed in claim 1,
and a first sealing ring (53) is arranged at the joint of the first oil inlet hole (516) and an oil outlet of the electromagnetic directional valve (3).
5. A pilot operated check valve installable by superposition as claimed in claim 1,
a second sealing ring (54) is arranged between the valve sleeve (514) and the central hole (511), and a third sealing ring (55) is arranged between the valve sleeve (514) and the screw sleeve (519).
6. A pilot operated check valve installable by superposition as claimed in claim 1,
and a fourth sealing ring (56) is arranged between the lock valve core (57) and the second oil inlet hole (517).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221482561.6U CN217381087U (en) | 2022-06-14 | 2022-06-14 | Hydraulic control one-way valve capable of being installed in stacked mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221482561.6U CN217381087U (en) | 2022-06-14 | 2022-06-14 | Hydraulic control one-way valve capable of being installed in stacked mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217381087U true CN217381087U (en) | 2022-09-06 |
Family
ID=83091055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221482561.6U Active CN217381087U (en) | 2022-06-14 | 2022-06-14 | Hydraulic control one-way valve capable of being installed in stacked mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217381087U (en) |
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2022
- 2022-06-14 CN CN202221482561.6U patent/CN217381087U/en active Active
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