CN108980422B - Check valve with adjustable stop direction - Google Patents
Check valve with adjustable stop direction Download PDFInfo
- Publication number
- CN108980422B CN108980422B CN201811060997.4A CN201811060997A CN108980422B CN 108980422 B CN108980422 B CN 108980422B CN 201811060997 A CN201811060997 A CN 201811060997A CN 108980422 B CN108980422 B CN 108980422B
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- hole
- rod
- valve core
- valve
- check valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a check valve with adjustable cut-off direction, which comprises a first shell and a second shell which are connected with each other, wherein the first shell is provided with a first through hole, the second shell is provided with a fourth connecting hole communicated with the first through hole, the check valve also comprises a first valve core matched and connected with the first through hole in a sliding way and a first spring for extruding the first valve core, the first valve core can seal the fourth connecting hole, the second shell is provided with a second through hole, the first shell is provided with a second connecting hole communicated with the second through hole, and the second connecting hole is communicated with the fourth connecting hole; the check valve further includes: the second valve core is matched and connected with the second through hole in a sliding mode, and the second spring extrudes the second valve core; a connecting rod connected with the first valve core and the second valve core; the driving device drives the connecting rod to move, the driving device at least comprises two working states, and the one-way valve can be controlled to prevent the liquid from flowing in the reverse direction by changing the state of the driving device.
Description
Technical Field
The present invention relates to a check valve.
Background
The check valve is commonly called as a check valve, fluid can only flow along the water inlet, and the medium at the water outlet cannot flow back. Check valves are also known as check valves or check valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems. The one-way valve has a straight-through type and a right-angle type.
Current check valve can only allow fluid to flow to a direction, realizes keeping opening when fluid flows at fixed direction, and fluid keeps ending when reverse flow, but under some circumstances, needs fluid to carry out the unidirectional flow in reverse, and fluid is by former delivery port to former water inlet unidirectional flow promptly, then at this moment, then needs reverse installation with the check valve, or uses two check valves, and the dismouting is wasted time and energy, and fluid flows out easily moreover, the polluted environment.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art, and providing a direction-adjustable check valve, which can conveniently control the direction of preventing the reverse flow of oil.
In order to achieve the purpose, the invention adopts the following technical scheme: a check valve with adjustable stop direction comprises a first shell second rod and a second shell second rod which are connected with each other, the first shell second rod piece is provided with a first through hole second rod piece, the second shell second rod piece is provided with a fourth connecting hole second rod piece communicated with the first through hole second rod piece, the check valve also comprises a first valve core second rod piece matched and connected with the first through hole second rod piece in a sliding way and a first spring second rod piece for extruding the first valve core second rod piece, the first valve core second rod piece can seal the fourth connecting hole second rod piece, the second shell second rod piece is provided with a second through hole second rod piece, the first shell second rod piece is provided with a second connecting hole second rod piece communicated with the second through hole second rod piece, and the second connecting hole second rod piece is communicated with the fourth connecting hole second rod piece;
the check valve further includes:
the second valve core second rod is matched and connected with the second through hole second rod in a sliding mode, and a second spring second rod extrudes the second valve core second rod;
the second rod piece of the connecting rod is connected with the second rod piece of the first valve core and the second rod piece of the second valve core;
the second rod piece of the driving device drives the second rod piece of the connecting rod to move, the second rod piece of the driving device at least comprises two working states, and in the first working state, the second rod piece of the connecting rod can drive the second rod piece of the first valve core to be separated from the second rod piece of the fourth connecting hole, and at the moment, the second rod piece of the second valve core seals the second rod piece of the second connecting hole under the action of the second spring second rod piece; in a second working state, the second rod of the connecting rod can drive the second valve core to separate from the second connecting hole second rod, and at the moment, the second rod of the first valve core seals the second rod of the fourth connecting hole under the action of the second rod of the first spring.
In addition, the invention also provides the following auxiliary technical scheme:
the one-way valve with the adjustable stop direction further comprises a first pull rod and a second rod which are connected between the first valve core second rod and the connecting rod second rod, and the first pull rod and the second rod are connected with each other in a sliding mode.
The first pull rod second rod piece is further provided with a first baffle second rod piece, and the connecting rod second rod piece comprises a first rod piece and a second rod piece, wherein the first baffle second rod piece is located between the first baffle second rod piece and the first shell second rod piece.
The one-way valve with the adjustable stop direction further comprises a second pull rod second rod piece connected between the second valve core second rod piece and the connecting rod second rod piece, and the second pull rod second rod piece is connected with the connecting rod second rod piece in a sliding mode.
The second pull rod second rod piece is provided with a second baffle second rod piece, and the connecting rod second rod piece comprises a second rod piece positioned between the second baffle second rod piece and the second shell second rod piece.
The first valve core is provided with a first flow through hole second rod piece communicated with the first through hole second rod piece and the second connecting hole second rod piece;
the second valve spool is provided with a second flow through hole second rod piece communicated with the second through hole second rod piece and the fourth connecting hole second rod piece, and the second flow through hole second rod piece is matched with the first flow through hole second rod piece.
The first shell second rod piece is further provided with a first anti-back sleeve second rod piece, and the first spring second rod piece is abutted between the first anti-back sleeve second rod piece and the first valve core second rod piece.
The second shell second rod piece is further provided with a second anti-back sleeve second rod piece, and the second spring second rod piece is abutted between the second anti-back sleeve second rod piece and the second valve core second rod piece.
The first valve core second rod piece is provided with a first blind hole second rod piece, and the first spring second rod piece is arranged in the first blind hole second rod piece.
The second valve core second rod piece is provided with a second blind hole second rod piece, and the second spring second rod piece is arranged in the second blind hole second rod piece.
Compared with the prior art, the invention has the advantages that: the one-way valve with the adjustable stop direction can conveniently control the direction of preventing the oil from flowing reversely by changing the states of the first valve core and the second valve core, and has simple and convenient operation and high reliability.
Drawings
Fig. 1 is a schematic view of a check valve in a shut-off state according to the present invention.
Fig. 2 is a cross-sectional view of a-a in fig. 1.
Fig. 3 is a bottom view of the check valve of fig. 1.
Fig. 4 is a left side view of the check valve of fig. 3.
Fig. 5 is a schematic view of the check valve of the present invention in another blocking state.
Fig. 6 is a cross-sectional view of the portion B-B in fig. 5.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
As shown in fig. 1, the check valve with adjustable blocking direction according to a preferred embodiment of the present invention includes a first housing 10 and a second housing 50 connected to each other, the first housing 10 and the second housing 50 are connected by flanges, the first housing 10 and the second housing 50 are respectively provided with a first flange 11 and a second flange 51, which are matched with each other, and the first housing 10 and the second housing 50 are fastened together by bolts and nuts (not shown).
As shown in fig. 2 to 4, a first through hole 12 is formed in an end surface of one end of the first housing 10, a first connection hole 13 and a second connection hole 14 are formed in an end surface of the other end, a first through hole 15 for connecting the first connection hole 13 and the first through hole 12 is further formed in the first housing 10, and preferably, the first connection hole 13 and the first through hole 15 are coaxially arranged; the second connection bore 14 communicates with the first through-flow bore 12 and is used for connecting an external oil line.
The second housing 50 has a structure similar to that of the first housing 10, wherein a second through hole 52 matching with the first through hole 12 is formed in an end face of one end of the second housing, a third connecting hole 53 and a fourth connecting hole 54 are formed in an end face of the other end of the second housing, a second through hole 55 communicating the third connecting hole 53 with the fourth connecting hole 54 is further formed in the second housing 50, and preferably, the third connecting hole 53 and the second through hole 55 are coaxially arranged; the fourth connection hole 54 communicates with the second through-hole 52, and is used for connecting an external oil line.
Preferably, after the first housing 10 and the second housing 50 are connected, the second connection hole 14 is coaxial with the second through hole 55; the fourth connection hole 54 is coaxial with the first through hole 15.
The check valve of the present invention further includes a first spool 16, a first anti-backup sleeve 17, a first pull rod 18, a first spring 19, a second spool 56, a second anti-backup sleeve 57, a second pull rod 58, a second spring 59, a driving device 100, and a connecting rod 101.
The driving device 100 is connected to the connecting rod 101 and drives the connecting rod 101 to move linearly, the driving device 100 may be a device capable of driving linearly, such as an air cylinder, a linear motor, an electric cylinder, an electric telescopic rod, etc., in this embodiment, the air cylinder 100 is used as the driving device 100.
Wherein the first valve core 16 is slidably fitted in the first through hole 15, and in one embodiment, the fitting relationship with the first through hole 15 can refer to the fitting relationship of the piston and the cylinder body of the oil cylinder in the prior art. One end of the first valve core 16 is provided with a first conical surface 71 capable of sealing the fourth connecting hole 54, the other end is provided with a first blind hole 70, and a first bottom surface 72 of the first blind hole 70 is further provided with a first screw hole 73 in threaded connection with the first pull rod 18. The first valve body 16 is further provided with a first through hole 75 that is in fluid communication with the first and second through holes 12, 52 in the radial direction.
One end of the first pull rod 18 is screwed in the first screw hole 73, the other end of the first pull rod 18 extends out of the first connection hole 13 and penetrates through the first matching hole 102 of the connection rod 101, a first baffle 20 is arranged at the end of the first pull rod 18 extending out of the first matching hole 102, and the outer diameter of the first baffle 20 is larger than the diameter of the first matching hole 102.
The surface of the first connecting hole 13 is provided with threads, the first anti-backing sleeve 17 is in threaded connection with the first connecting hole 13, the first pull rod 18 is arranged in the first anti-backing sleeve 17 in a penetrating mode, and the first anti-backing sleeve 17 is provided with a first supporting surface 74.
The first spring 19 is disposed in the first blind hole 70, and is sleeved on the first pull rod 18, and two ends of the first spring respectively abut against the first supporting surface 74 and the first bottom surface 72. The first spring 19 applies a force to the first spool 16 in the direction of the fourth connection hole 54; when the cylinder 100 is in the retracted state (refer to fig. 2), the rod 101 is not in contact with the first shutter 20, and the first valve spool 16 abuts against and seals the fourth connection hole 54; and when the cylinder 100 becomes the extended state (refer to fig. 6), the connecting rod 101 pushes the first flapper 20 outward, and the first spool 16 is out of contact with the fourth connection hole 54.
The second valve element 56 is slidably coupled within the second bore 55, and in one embodiment, the coupling relationship with the second bore 55 is as described in the prior art with reference to the coupling relationship of the piston and the cylinder of the oil cylinder. One end of the second valve core 56 is provided with a second taper surface 81 capable of sealing the second connecting hole 14, the other end is provided with a second blind hole 80, and a second bottom surface 82 of the second blind hole 80 is further provided with a second screw hole 83 in threaded connection with the second pull rod 58. The second spool 56 is also provided with a second through-hole 85 in radial direction, which is in fluid communication with the first and second through- holes 12, 52.
One end of the second pull rod 58 is screwed in the second screw hole 83, the other end of the second pull rod extends out of the third connecting hole 53 and penetrates through the second matching hole 103 of the connecting rod 101, a second baffle plate 60 is arranged at the end of the second pull rod 58 extending out of the second matching hole 103, and the outer diameter of the second baffle plate 60 is larger than the diameter of the second matching hole 103.
The surface of the third connecting hole 53 is provided with threads, the second anti-back sleeve 57 is connected in the third connecting hole 53 in a threaded manner, the second pull rod 58 penetrates through the second anti-back sleeve 57, and the second anti-back sleeve 57 is provided with a second supporting surface 84.
The second spring 59 is disposed in the second blind hole 80, and the second spring is sleeved on the second pull rod 58, and two ends of the second spring respectively abut against the second supporting surface 84 and the second bottom surface 82. The second spring 59 applies a force to the second spool 56 in the direction toward the second through hole 55; when the cylinder 100 is in the extended state (refer to fig. 6), the connecting rod 101 is not in contact with the second baffle 60, and the second valve core 56 abuts against and seals the second connecting hole 14; and when the cylinder 100 becomes the retracted state (refer to fig. 2), the connecting rod 101 pulls the second shutter 60 outward, at which time the first spool 16 is out of contact with the fourth connecting hole 54.
The connecting rod 101 may be formed integrally, and in this embodiment, the connecting rod 101 is assembled in multiple stages in consideration of the processing cost. Specifically, the connecting rod 101 includes a first rod 104 disposed on the first pull rod 18, a second rod 108 disposed on the second pull rod 58, a third rod 105 disposed through the first rod 104 and connected to the first rod by a bolt, a fourth rod 106 disposed on the third rod 105 and connected to the third rod by a bolt, and a fifth rod 107 disposed through the fourth rod 106 and connected to the fourth rod by a bolt. The fifth rod 107 is further inserted into the second rod 108 and connected to the second rod by a bolt, a connecting sleeve 109 is disposed at one end of the fifth rod 107, and a piston shaft end of the cylinder 100 is connected to the connecting sleeve 109. The first mating hole 102 and the second mating hole 103 are opened at the ends of the first rod 104 and the second rod 108, respectively. For guiding, the first flange 11 and the second flange 51 are further provided with a through guiding hole 110, and the fifth rod 107 is slidably fitted in the guiding hole 110.
As shown in fig. 1 and 2, when the cylinder 100 is in the retracted state, the first baffle 20 is not in contact with the first rod 104, the first valve core 16 abuts against the fourth connecting hole 54 under the action of the spring force, the second baffle 60 is fixed by the second rod 108 so that the second valve core 56 is out of contact with the second connecting hole 14, and at this time, after oil enters from the fourth connecting hole 54, the oil pushes away the first valve core 16 and flows out of the second connecting hole 14 through the first and second through holes 12 and 52; if oil flows in from the second connecting hole 14, the pressure of the oil further presses the first valve element 16 against the fourth connecting hole 54 due to the first spring 19 pressing the first valve element 16 against the fourth connecting hole 54, so that the oil cannot flow into the fourth connecting hole 54, i.e., only the oil is allowed to flow in from the fourth connecting hole 54 and flow out from the second connecting hole 14.
Correspondingly, as shown in fig. 5 and 6, when the cylinder 100 changes to the extended state, the first rod 104 drives the first baffle 20 to move leftward, so that the first valve element 16 is out of contact with the fourth connecting hole 54, the second rod 108 is out of contact with the second baffle 60, the second valve element 56 is abutted against the second connecting hole 14 under the action of the spring force, and at this time, after oil enters from the second connecting hole 14, the oil pushes away the second valve element 56 and flows out from the fourth connecting hole 54 through the first and second through- holes 12 and 52; if the oil flows in from the fourth connecting hole 54, the pressure of the oil further presses the second spool 56 against the second connecting hole 14 because the second spring 59 presses the second spool 56 against the second connecting hole 14, so that the oil cannot flow into the second connecting hole 14, that is, only the oil is allowed to flow in from the second connecting hole 14 and flow out from the fourth connecting hole 54.
By changing the extending or retracting state of the cylinder 100, the flow direction of the check valve oil is allowed to be adjusted, or the cut-off direction of the check valve is changed (the direction in which the liquid is prevented from flowing reversely).
The one-way valve with the adjustable stop direction can conveniently control the direction of preventing the oil from flowing reversely by changing the states of the first valve core and the second valve core, and has simple and convenient operation and high reliability.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The check valve with the adjustable stop direction comprises a first shell (10) and a second shell (50) which are connected with each other, wherein the first shell (10) is provided with a first through hole (15), the second shell (50) is provided with a fourth connecting hole (54) communicated with the first through hole (15), the check valve further comprises a first valve core (16) matched and connected with the first through hole (15) in a sliding mode and a first spring (19) extruding the first valve core (16), and the first valve core (16) can seal the fourth connecting hole (54), and the check valve is characterized in that: the second shell (50) is provided with a second through hole (55), the first shell (10) is provided with a second connecting hole (14) communicated with the second through hole (55), and the second connecting hole (14) is communicated with the fourth connecting hole (54);
the check valve further includes:
a second valve core (56) matched with the second through hole (55) in a sliding mode and a second spring (59) pressing the second valve core (56), wherein the second valve core (56) can seal the second connecting hole (14);
a connecting rod (101) connected to the first spool (16) and the second spool (56);
the driving device (100) drives the connecting rod (101) to move, the driving device (100) at least comprises two working states, in the first working state, the connecting rod (101) can drive the first valve core (16) to be separated from the fourth connecting hole (54), and at the moment, the second valve core (56) seals the second connecting hole (14) under the action of the second spring (59); in a second working state, the connecting rod (101) can drive the second valve core (56) to be separated from the second connecting hole (14), and at the moment, the first valve core (16) seals the fourth connecting hole (54) under the action of the first spring (19).
2. The check valve with adjustable stop direction according to claim 1, wherein: the valve further comprises a first pull rod (18) connected between the first valve core (16) and the connecting rod (101), and the first pull rod (18) is in sliding fit with the connecting rod (101).
3. The check valve with adjustable stop direction according to claim 2, wherein: the first tie rod (18) is further provided with a first baffle (20), the link (101) comprising a first lever (104) located between the first baffle (20) and the first housing (10).
4. The check valve with adjustable stop direction according to claim 1, wherein: the valve further comprises a second pull rod (58) connected between the second valve core (56) and the connecting rod (101), and the second pull rod (58) is in sliding fit with the connecting rod (101).
5. The check valve with adjustable stop direction according to claim 4, wherein: the second tie rod (58) is provided with a second baffle (60), and the link (101) comprises a second lever (108) located between the second baffle (60) and the second housing (50).
6. The check valve with adjustable stop direction according to claim 1, wherein: the first valve core (16) is provided with a first flow through hole (75) communicated with the first through hole (15) and the second connecting hole (14);
the second valve core (56) is provided with a second flow through hole (85) communicated with the second through hole (55) and the fourth connecting hole (54).
7. The check valve with adjustable stop direction according to claim 1, wherein: the first shell (10) is further provided with a first anti-back sleeve (17), and the first spring (19) is abutted between the first anti-back sleeve (17) and the first valve core (16).
8. The check valve with adjustable stop direction according to claim 1, wherein: the second shell (50) is further provided with a second anti-back sleeve (57), and the second spring (59) is abutted between the second anti-back sleeve (17) and the second valve core (56).
9. The check valve with adjustable stop direction according to claim 1, wherein: the first valve core (16) is provided with a first blind hole (70), and the first spring (19) is arranged in the first blind hole (70).
10. The check valve with adjustable stop direction according to claim 1, wherein: the second valve core (56) is provided with a second blind hole (80), and the second spring (59) is arranged in the second blind hole (80).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060997.4A CN108980422B (en) | 2018-09-12 | 2018-09-12 | Check valve with adjustable stop direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060997.4A CN108980422B (en) | 2018-09-12 | 2018-09-12 | Check valve with adjustable stop direction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980422A CN108980422A (en) | 2018-12-11 |
| CN108980422B true CN108980422B (en) | 2020-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811060997.4A Active CN108980422B (en) | 2018-09-12 | 2018-09-12 | Check valve with adjustable stop direction |
Country Status (1)
| Country | Link |
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| CN (1) | CN108980422B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027332B (en) * | 2018-09-12 | 2020-01-03 | 苏州丹顿机电有限公司 | Check valve with adjustable stop direction |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004059926B3 (en) * | 2004-12-13 | 2006-08-10 | Weinhold, Karl, Dipl.-Ing. (FH) | Non-return valve with different flow directions has valve plates essentially fixed in position and internal cone element through which flow can pass arranged to be axially movable in housing as respective valve seat |
| CN102797875A (en) * | 2011-05-23 | 2012-11-28 | 广东美芝制冷设备有限公司 | Bidirectional one-way valve and control method thereof |
| CN105730505A (en) * | 2016-04-18 | 2016-07-06 | 金龙联合汽车工业（苏州）有限公司 | Hydraulic two-way check valve for steering system of new-energy bus |
| CN206830893U (en) * | 2017-04-13 | 2018-01-02 | 烟台职业学院 | A kind of multi-direction control inflation relief valve |
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2018
- 2018-09-12 CN CN201811060997.4A patent/CN108980422B/en active Active
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| Publication number | Publication date |
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| CN108980422A (en) | 2018-12-11 |
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