CN217108346U - Self-locking check valve - Google Patents
Self-locking check valve Download PDFInfo
- Publication number
- CN217108346U CN217108346U CN202220550305.XU CN202220550305U CN217108346U CN 217108346 U CN217108346 U CN 217108346U CN 202220550305 U CN202220550305 U CN 202220550305U CN 217108346 U CN217108346 U CN 217108346U
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- locking
- valve body
- valve
- pin shaft
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- Check Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model belongs to the technical field of check valves, in particular to a self-locking check valve, which comprises a valve body, a valve clack and a rocker, wherein the rocker is hinged with the valve body through a pin shaft, the rocker is in linkage fit with the circumference of the pin shaft, and the pin shaft is connected with a first self-locking piece; the valve body is connected with a part of swing mechanism, and the part of swing mechanism is connected with a driving mechanism and a second self-locking piece; the first self-locking piece is along round pin axle axial and to the protruding first auto-lock lug that forms of second self-locking piece direction, and the second is from the locking piece along round pin axle axial and to the protruding second auto-lock lug that forms of first self-locking piece direction, makes second auto-lock lug position remove and fix on arbitrary position wherein on the at least partial removal route that first auto-lock lug removed from the valve clack from totally closing to the full open direction through the rotatable second of actuating mechanism. The utility model discloses can realize auto-lock and auto-lock position and adjust as required to the control valve clack is opened, is closed the control of time and the coarse adjustment function of flow.
Description
Technical Field
The utility model belongs to the technical field of the check valve, concretely relates to from locking-type check valve.
Background
The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The swing check valve has a flap that is inclined and rotatable about an axis, and is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. The check valve belongs to the automatic valve class, is mainly used on the pipeline of medium one-way flow, only allows medium to flow to one direction to prevent the accident. Such swing check valves generally cannot be set to an opening angle, i.e., cannot adjust the flow rate of the check valve as desired and cannot be closed by an external force.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide a from locking-type check valve.
The utility model discloses the technical scheme who takes as follows: a self-locking check valve comprises a valve body, a swing type valve clack and a rocker, wherein the swing type valve clack is positioned in the valve body, the rocker is in linkage fit with the valve clack, the rocker is hinged with the valve body through a pin shaft, the rocker is in circumferential linkage fit with the pin shaft, the pin shaft penetrates through the valve body, and the end part of the pin shaft is in linkage connection with a first self-locking piece; the valve body is connected with a part of swing mechanism through a support, the part of swing mechanism is connected with a driving mechanism and a second self-locking piece, and the second self-locking piece is positioned at the outer end of the first self-locking piece in the axial direction of the pin shaft; first from the latch fitting along round pin axle axial and to the protruding first auto-lock lug that forms of second from latch fitting direction, the second is from the latch fitting along round pin axle axial and to the protruding second auto-lock lug that forms of first auto-lock fitting direction, through the rotatable second of actuating mechanism makes second auto-lock lug position remove and fix on arbitrary position wherein on the at least part moving path that first auto-lock lug moved from the valve clack from totally closed to full open direction.
The second self-locking lug rotates by taking the central shaft of the pin shaft as the axis through the driving mechanism.
The first self-locking lug is an arc-shaped block taking a central shaft of the pin shaft as a circle center, and two arc-shaped blocks are symmetrically arranged; the second self-locking lug is an arc-shaped block taking the central shaft of the pin shaft as the circle center, and is provided with two symmetrical arrangements; the range from the inner diameter to the outer diameter of the second self-locking lug is at least partially overlapped with the range from the inner diameter to the outer diameter of the first self-locking lug.
The second self-locking lug is equivalent to the first self-locking lug in inner diameter and outer diameter.
The valve body is provided with a packing groove, the pin shaft penetrates through the packing groove, graphite packing is filled in the packing groove, and a packing gland for fixing the graphite packing is detachably connected to the valve body.
The packing gland and the valve body are connected and fixed through a bolt piece.
And a blowout prevention gasket is arranged at the bottom of the packing groove.
Be equipped with the rocker installation cavity in the valve body, the rocker sets up in the rocker installation cavity and is equipped with the bearing between both ends and the valve body inner wall.
The first self-locking piece is connected with the pin shaft in an inserted and tight fit manner.
The driving mechanism is a hand wheel.
The utility model has the advantages as follows: the utility model discloses an add first from latch fitting, second from latch fitting, part rotation mechanism, actuating mechanism and make the aperture of the valve clack of swing-type can realize auto-lock and auto-lock position and can adjust as required to the control valve clack is opened, the control of closing time and the coarse adjustment function of flow.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural view of a first self-locking member according to an embodiment of the present invention;
fig. 3 is a schematic view of a second self-locking member according to an embodiment of the present invention;
fig. 4 is a schematic structural view of the first self-locking member and the second self-locking member being engaged when the valve flap is in the closed position when the fully opened degree is preset according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the first self-locking member and the second self-locking member being engaged when the valve flap is in the open position when the full-open degree is preset according to an embodiment of the present invention;
fig. 6 is a schematic structural view illustrating the first self-locking member and the second self-locking member being engaged with each other when the valve flap is in the closed position in the half-open state according to an embodiment of the present invention;
fig. 7 is a schematic structural view illustrating the first self-locking member and the second self-locking member being engaged when the valve flap is in the open position when the half-open degree is preset according to an embodiment of the present invention;
fig. 8 is a schematic structural view illustrating the first self-locking member and the second self-locking member being engaged when the valve flap is in the closed position when the fully closed opening degree is preset according to an embodiment of the present invention;
in the figure, 1, a valve body; 2, a valve clack; 3, a rocker; 4, a pin shaft; 5, a blowout prevention gasket; 6, graphite filler; 7, a packing gland; 7, a first self-locking piece; 701, a first self-locking bump; 8, a bracket; 10, a second self-locking piece; 1001, a second self-locking projection; 11, a partial slewing mechanism; 12, a drive mechanism; 13, bolt pieces.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.
The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.
As shown in fig. 1-3, a self-locking check valve comprises a valve body 1, a swing type valve clack 2 located in the valve body 1, and a rocker 3 in linkage fit with the valve clack 2, wherein the rocker 3 is hinged with the valve body 1 through a pin 4, the rocker 3 is in circumferential linkage fit with the pin 4, the pin 4 penetrates through the valve body 1, and the end part of the pin is in linkage connection with a first self-locking piece 7; the valve body 1 is connected with a part of rotating mechanism 11 through a support 8, the part of rotating mechanism 11 is connected with a driving mechanism 12 and a second self-locking piece 10, and the second self-locking piece 10 is positioned at the outer end of the first self-locking piece 7 along the axial direction of the pin shaft 4; first from locking part 7 along round pin axle 4 axial and to the protruding first auto-lock lug 701 that forms of second from locking part 10 direction, second from locking part 10 along round pin axle 4 axial and to the protruding second auto-lock lug 1001 that forms of first self-lock part 7 direction, through actuating mechanism 12 rotatable second from locking part 10 makes second auto-lock lug 1001 position remove and fix on arbitrary position wherein on first auto-lock lug 701 from valve clack 2 from the at least partial movement path of totally closing to the removal of full-open direction. The partial rotation mechanism 11 is a transmission mechanism connected between the driving mechanism 12 and the second self-locking member 10, and the second self-locking member 10 is operable to rotate to a target position by the driving mechanism 12, thereby limiting a space in which the first self-locking member 7 can rotate.
As shown in fig. 4 to 8, the driving mechanism 12 rotates the second self-locking protrusion 1001 around the central axis of the pin 4. Further, the first self-locking projection 701 is an arc-shaped block taking the central axis of the pin shaft 4 as the center of a circle, and is provided with two symmetrical arrangements; the second self-locking projection 1001 is an arc-shaped block taking the central shaft of the pin 4 as the circle center, and is provided with two symmetrical arrangements; the range from the inner diameter to the outer diameter of the second self-locking protrusion 1001 and the range from the inner diameter to the outer diameter of the first self-locking protrusion 701 at least partially overlap.
Preferably, the second self-locking protrusion 1001 has an inner diameter and an outer diameter corresponding to the first self-locking protrusion 701.
When the embodiment is used, the specific process is as follows:
as shown in fig. 4 and 5, the second self-locking protrusion 1001 has no resistance to the stroke of the first self-locking protrusion 701 from the full-closed position to the full-open position, and the valve flap rotates clockwise to the full-closed position and rotates counterclockwise to the full-open position, and can freely rotate from the full-closed position to the full-open position, and at this time, the opening degree of the check valve is maximum;
as shown in fig. 6 and 7, when the second self-locking member 10 is rotated clockwise, the second self-locking protrusion 1001 moves to the moving path of the first self-locking protrusion 701 from the fully closed position to the fully open position, the stroke of the first self-locking protrusion 701 from the fully closed position to the fully open position is partially blocked, the valve flap rotates clockwise to the fully closed position, rotates counterclockwise to the half open position, is locked after being opened to a certain angle, and cannot be further opened, and the opening degree of the check valve is limited at this time, and is in a half open state;
as shown in fig. 8, when the second self-locking member 10 is further rotated clockwise, the second self-locking protrusion 1001 moves to one side of the first self-locking protrusion 701 at the fully closed position, and locks the first self-locking protrusion 701, so that the valve flap cannot be opened, and only the fully closed position is maintained, and at this time, the check valve is not opened by the fluid pressure, and is in the fully closed state.
Further, as shown in fig. 1, a packing groove is formed in the valve body, the pin shaft 4 penetrates through the packing groove, graphite packing 6 is filled in the packing groove, and a packing gland for fixing the graphite packing 6 is detachably connected to the valve body 1.
The packing gland and the valve body 1 are fixedly connected through a bolt piece 13.
And a blowout prevention gasket 5 is arranged at the bottom of the packing groove.
Further, be equipped with the rocker installation cavity in the valve body 1, rocker 3 sets up and is equipped with the bearing in the rocker installation cavity and between both ends and the 1 inner wall of valve body. The resistance to the rotation of the valve clack can be reduced, and the valve clack rotates more stably.
The first self-locking piece 7 is connected with the pin shaft 4 in a plugging tight fit mode, and assembly is convenient.
The drive mechanism 12 is a hand wheel. Other common valve actuation mechanisms such as pneumatic actuators, electric actuators, and the like may also be used.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. The utility model provides a from locking-type check valve, includes valve body (1), be located valve clack (2) of swing formula in valve body (1), with valve clack (2) linkage complex rocker (3), rocker (3) are articulated its characterized in that through round pin axle (4) with valve body (1): the rocker (3) is in circumferential linkage fit with the pin shaft (4), the pin shaft (4) penetrates through the valve body (1), and the end part of the pin shaft is in linkage connection with a first self-locking piece (7); the valve body (1) is connected with a part of rotating mechanism (11) through a support (8), the part of rotating mechanism (11) is connected with a driving mechanism (12) and a second self-locking piece (10), and the second self-locking piece (10) is positioned at the outer end of the first self-locking piece (7) in the axial direction of the pin shaft (4); first from latch fitting (7) along round pin axle (4) axial and to the second from the protruding first auto-lock lug (701) of formation of latch fitting (10) direction, the second is from latch fitting (10) along round pin axle (4) axial and to first protruding second auto-lock lug (1001) that forms of latch fitting (7) direction, through actuating mechanism (12) rotatable second makes second auto-lock lug (1001) position remove and fix on arbitrary position wherein on first auto-lock lug (701) from valve clack (2) from the at least part removal route of totally closing to the removal of full open orientation.
2. The self-locking check valve of claim 1, wherein: the driving mechanism (12) enables the second self-locking lug (1001) to rotate by taking the central shaft of the pin shaft (4) as an axis.
3. The self-locking check valve of claim 2, wherein: the first self-locking convex block (701) is an arc-shaped block taking a central shaft of the pin shaft (4) as a circle center, and is provided with two symmetrical arrangements; the second self-locking convex block (1001) is an arc-shaped block taking a central shaft of the pin shaft (4) as a circle center, and is provided with two symmetrical arrangements; the range from the inner diameter to the outer diameter of the second self-locking lug (1001) is at least partially overlapped with the range from the inner diameter to the outer diameter of the first self-locking lug (701).
4. The self-locking check valve of claim 3, wherein: the second self-locking lug (1001) is equivalent to the first self-locking lug (701) in inner diameter and outer diameter.
5. The self-locking check valve of claim 1, wherein: the valve body is provided with a packing groove, the pin shaft (4) penetrates through the packing groove, graphite packing (6) is filled in the packing groove, and a packing gland for fixing the graphite packing (6) is detachably connected to the valve body (1).
6. The self-locking check valve of claim 5, wherein: the packing gland and the valve body (1) are fixedly connected through a bolt piece (13).
7. The self-locking check valve of claim 5, wherein: and a blowout prevention gasket (5) is arranged at the bottom of the packing groove.
8. The self-locking check valve of claim 1, wherein: be equipped with the rocker installation cavity in valve body (1), rocker (3) set up in the rocker installation cavity and both ends and valve body (1) inner wall between be equipped with the bearing.
9. The self-locking check valve of claim 1, wherein: the first self-locking piece (7) is connected with the pin shaft (4) in a plugging tight fit manner.
10. The self-locking check valve of claim 1, wherein: the driving mechanism (12) is a hand wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220550305.XU CN217108346U (en) | 2022-03-14 | 2022-03-14 | Self-locking check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220550305.XU CN217108346U (en) | 2022-03-14 | 2022-03-14 | Self-locking check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217108346U true CN217108346U (en) | 2022-08-02 |
Family
ID=82603488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220550305.XU Active CN217108346U (en) | 2022-03-14 | 2022-03-14 | Self-locking check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217108346U (en) |
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2022
- 2022-03-14 CN CN202220550305.XU patent/CN217108346U/en active Active
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