CN110360352B - Adjustable swing check valve - Google Patents
Adjustable swing check valve Download PDFInfo
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- CN110360352B CN110360352B CN201910683243.2A CN201910683243A CN110360352B CN 110360352 B CN110360352 B CN 110360352B CN 201910683243 A CN201910683243 A CN 201910683243A CN 110360352 B CN110360352 B CN 110360352B
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- 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
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention relates to the technical field of one-way valves, and aims to provide a swing check valve which comprises a valve body, a valve cover, a rotating shaft and a valve clack, wherein a torsion spring which can be twisted relatively and generate torsion force is sleeved on the rotating shaft; the torsion spring is extended out of two ends, one end is a rotating end, and the other end is a working end; the working end is fixedly connected with the valve clack, the rotating end is fixedly connected with the rotating shaft, and the rotating end can rotate along the rotating direction of the valve clack to enable the working end to be twisted to generate torsional force; a spline shaft extending along the axial direction is arranged at one end of the rotating shaft, a flower-shaped groove matched with the valve body is formed in the valve body, the rotating shaft can move along the axial lead direction of the rotating shaft, and the movable distance is greater than the length of the spline shaft; the invention solves the problem that when the swing check valve is arranged in a non-horizontal pipeline and a medium flows from top to bottom, the valve clack is influenced by self weight and cannot completely close a medium outlet, so that the check valve loses the function of preventing the medium from flowing back.
Description
Technical Field
The invention relates to the technical field of check valves, in particular to an adjustable swing check valve.
Background
The check valve is also called a one-way valve or a check valve and is used for preventing media in the pipeline from flowing backwards. When the medium in the pipeline flows in the forward direction, the valve clack of the check valve automatically opens under the action of the medium force, and when the medium in the pipeline flows in the reverse direction, the valve clack automatically closes under the action of the medium force. The swing check valve has a valve stem and a valve flap which is disposed obliquely and can be rotated around the valve stem, the valve flap is mounted at the medium inlet, and the valve flap can be rotated toward the medium inlet to close the inlet when the medium flows backward.
The swing check valve in the prior art can be arranged on a non-horizontal pipeline, but when the swing check valve is arranged, the flow direction of a medium can only be from bottom to top, otherwise, the valve clack can not be closed due to gravity, and the check function can not be realized.
Disclosure of Invention
The invention aims to provide an adjustable swing check valve which can achieve the effect of preventing a medium from flowing backwards when the medium flows from top to bottom in a non-horizontal pipeline.
The technical purpose of the invention is realized by the following technical scheme:
an adjustable swing check valve comprises a valve body, a valve cover, a rotating shaft and a valve clack; a medium inlet and a medium outlet are respectively arranged at two ends of the valve body; the valve clack can rotate towards the direction of the medium inlet and close the medium inlet, and is characterized in that: a torsion spring is sleeved on the rotating shaft; the torsion spring is extended out of two ends, one end is a rotating end, and the other end is a working end; the working end is fixedly connected with the valve clack, and the rotating end is fixedly connected with the rotating shaft; a spline shaft extending along the axial direction is arranged at one end of the rotating shaft, and a flower-shaped groove matched with the spline shaft is arranged at one side, corresponding to the spline shaft, in the valve body; the rotating shaft can move along the axial lead direction of the rotating shaft, and the movable distance is greater than the length of the spline shaft.
By adopting the technical scheme, the adjustable swing check valve is arranged in the non-horizontal pipeline, when a medium flows from top to bottom, the valve clack is arranged at the medium inlet and can rotate towards the medium inlet, and the medium rushes open the valve cover through the medium inlet and flows out from the medium outlet; by opening the valve cover, a rotating shaft in the valve body is rotated to a proper angle and drives a rotating end on the torsion spring to be twisted, so that the torsion spring generates a twisting force and transmits the twisting force to a working end, and the valve clack on the working end obtains a propelling force along the closing direction of the valve clack; in an initial state, the spline shaft on the rotating shaft completely enters the flower-shaped groove, the rotating shaft moves to the outside of the flower-shaped groove along the axial lead towards one side far away from the valve body during adjustment, so that the flower-shaped groove cannot limit the rotation of the spline shaft, and after the adjustment is finished, the rotating shaft resets due to the elasticity of the torsion spring along the axial lead direction of the rotating shaft, so that the spline shaft enters the flower-shaped groove again; when the spline shaft on the rotating shaft enters the flower-shaped groove, the rotating shaft can not rotate, the rotating shaft is prevented from reversing due to the reset of the torsion spring, and otherwise, the rotating shaft can rotate; when the adjustable swing check valve is installed in a non-horizontal pipeline and the valve clack rotates upwards to close a medium inlet, the rotating shaft rotates for a certain angle, so that the propelling force borne by the valve clack is just slightly larger than the opposite resistance generated by the gravity of the valve clack, the valve clack is still in a closed state under a non-working state, a medium can smoothly impact the valve clack through gravity power under the working state to avoid blockage, and the effect of preventing the medium from flowing back when the medium flows from top to bottom in the non-horizontal pipeline is achieved. Simple structure, practicality and reliability.
The invention is further configured to: an operation hole in clearance fit with the rotating shaft is formed in the surface of one side, far away from the spline shaft, of the outer side of the valve body; and the other end of the rotating shaft is provided with an operating head.
Through adopting above-mentioned technical scheme, pass through the handle hole with the pivot and extend to the valve body outside, make the required propulsive force of valve clack can be adjusted through twisting the operating head outside the valve body, need not open the valve gap, make whole operation process more convenient.
The invention is further configured to: a sealing disc which is cylindrical is arranged between the operating head and the outer wall of the valve body; the axial lines of the sealing disc and the operation hole are collinear, and the diameter of the sealing disc is larger than that of the operation hole; the adjustable swing check valve further includes a fastening device for squeezing the sealing disk against the valve body surface to seal the operation hole.
Through adopting above-mentioned technical scheme, the valve body makes sealed dish cover the handle hole and gives sealed dish an extrusion force towards the valve body inboard through fastener through the sealed dish that the diameter is greater than the handle hole in the pivot makes the valve body airtight, prevents that the medium from leaking.
The invention is further configured to: the fastening device comprises a connecting ring and a connecting seat arranged on the outer wall of the valve body; the connecting ring is collinear with the axial lead of the rotating shaft, and internal threads are arranged on the inner wall of the connecting ring; a movable hole which is smaller than the sealing disc in diameter and is circular in shape with the coaxial line of the connecting ring is arranged at one end of the connecting ring, which is far away from the valve body; the connecting ring is sleeved between the sealing disc and the operating head on the rotating shaft through the movable hole; the connecting seat is in a circular tube shape with the same axis as the operating hole, and the inner diameter of the connecting seat is the same as the diameter of the operating hole; and the outer side of the connecting seat is provided with an external thread matched with the internal thread of the connecting ring.
Through adopting above-mentioned technical scheme, go-between and connecting seat are to being in the sealed dish between the two, fix sealed dish on the valve body through threaded connection, make the pivot adjust the back fastening that finishes on the valve body, prevent that the pivot from not being fixed the maloperation condition of appearing.
The invention is further configured to: the connecting seat is embedded with a rubber ring on the end face far away from one end of the valve body.
Through adopting above-mentioned technical scheme, the use of rubber circle makes the leakproofness at valve body handle hole position more reliable.
The invention is further configured to: the operating head is cylindrical; the diameter of the operating head is larger than that of the movable hole in the connecting ring.
By adopting the technical scheme, the connecting ring is larger than the diameter of the movable hole in the connecting ring due to the diameter of the operating head and the diameter of the fixed disc are also larger than the diameter of the movable hole when moving along the end far away from the valve body, so that the connecting ring cannot be taken out from the rotating shaft, and the situation that the connecting ring is lost before being fixed is effectively avoided.
The invention is further configured to: and one end of the operating head, which is far away from the valve body, is provided with a hexagonal groove.
Through adopting above-mentioned technical scheme, operating head tip is provided with the hexagon recess, can twist through interior hexagonal spanner and move the pivot, makes the operation more convenient.
The invention is further configured to: the flower type groove is provided with the secondary structure, flower type groove is the secondary structure, includes the primary groove, the secondary groove that set up along same central line, the cross-section of secondary groove be with integral key shaft complex flower type, the cross-section of primary groove is circular, the integral key shaft can rotate along the axial lead of pivot in the primary groove.
By adopting the technical scheme, the spline shaft matched flower-shaped groove is provided with the secondary structure, when the rotating shaft moves out, the rotating shaft only moves out of the secondary groove, the tail end of the rotating shaft is still remained in the primary groove, the rotating shaft can fix the rotating angle through the secondary groove, and the primary groove can prevent the rotating shaft from being eccentric with the central line of the annular groove to cause the rotating shaft to be incapable of entering the flower-shaped groove.
The invention is further configured to: and a limiting block which cannot pass through the operation hole is arranged on the surface of the rotating shaft in the direction of the inner side of the valve body close to the operation hole.
By adopting the technical scheme, the limiting block on the rotating shaft enables the rotating shaft not to be completely moved out when the rotating shaft moves towards the outer side of the valve body along the axial lead of the rotating shaft, so that the internal structure of the valve body is prevented from being damaged, and the limiting and protecting effects are achieved.
In conclusion, the beneficial effects of the invention are as follows:
1. the adjustable swing check valve comprises a working part consisting of a rotating shaft, a torsion spring and a valve clack, wherein the rotating shaft is rotated by an operating head which is arranged at one end of the rotating shaft, which is positioned at the outer side of a valve body, on the rotating shaft, so that the rotating shaft is rotated to a proper angle and drives a rotating end of the torsion spring to be twisted, the torsion spring generates a twisting force and transmits the twisting force to the working end, and the valve clack on the working end obtains a propelling force along the closing direction of the valve clack; and the tail end of the rotating shaft and the inner wall of the valve body are also provided with a spline shaft and a flower-shaped groove, so that the rotating shaft can be locked at a rotating angle after rotating to a proper angle, and the rotating shaft is prevented from reversing due to the reset of the torsion spring. When the adjustable swing check valve is installed in a non-horizontal pipeline, the propelling force borne by the valve clack is just slightly larger than the opposite resistance generated by the gravity of the valve clack, so that the valve clack is still in a closed state under a non-working state, and a medium can smoothly impact the valve clack through the gravity of the medium under the working state to avoid blockage, thereby realizing the effect of preventing the medium from flowing back when the medium flows from top to bottom in the non-horizontal pipeline. The structure is simple, practical and reliable;
2. the connecting seat and the swing joint in the pivot in the valve body outside pass through threaded connection with the go-between, will be in the sealed dish between connecting seat and the go-between and fix on the valve body, the whole fixed connection of three, and still be equipped with the rubber circle on the connecting seat, reach this adjustable swing check valve fastening and sealed effect, prevent that this adjustable swing check valve from becoming flexible or appearing leaking at the during operation pivot.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional structural view of the present invention;
FIG. 3 is a schematic illustration of an explosive structure of the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3, showing the rotating end and the working end;
FIG. 5 is a schematic view, partially in section, of another aspect of the invention;
fig. 6 is an enlarged schematic view at B in fig. 5.
Reference numerals: 1. a valve body; 11. an operation hole; 12. a connecting seat; 121. a rubber ring; 13. a pattern groove; 131. a primary tank; 132. a secondary tank; 2. a valve cover; 3. a rotating shaft; 31. a valve flap; 32. a torsion spring; 321. a rotating end; 322. a working end; 33. a spline shaft; 34. an operating head; 35. a connecting ring; 351. a movable hole; 36. sealing the disc; 37. a limiting block; 4. a media inlet; 5. a medium outlet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment discloses an adjustable swing check valve, as shown in fig. 1 and 2, which includes a valve body 1, a valve cover 2, a rotating shaft 3, and a valve flap 31, wherein two ends of the valve body 1 are respectively provided with a medium inlet 4 and a medium outlet 5.
As shown in fig. 2 and 3, the adjustable swing check valve is installed in a non-horizontal pipeline, and when the medium flows from top to bottom, the valve flap 31 is arranged at the medium inlet 4, and the medium rushes through the valve flap 31 through the medium inlet 4 and flows out from the medium outlet 5; the surface of the valve body 1 is provided with a circular operation hole 11 for the rotating shaft 3 to enter the valve body 1, and the rotating shaft 3 is in clearance fit with the operation hole 11. The pivot 3 passes in the handle hole 11 gets into valve body 1, and 3 end of pivot is located valve body 1 inboard, and the head end is located the valve body 1 outside and the tip is equipped with the operating head 34 that has seted up the hexagon recess in the cylinder type, and operating personnel twists operating head 34 through the allen key in the valve body 1 outside and makes pivot 3 take place to rotate, has avoided directly opening valve gap 2 and has adjusted the trouble of pivot 3 in valve body 1.
As shown in fig. 3 and 4, the rotating shaft 3 is sleeved with a torsion spring 32, the torsion spring 32 is in the form of a double torsion spring, the double torsion spring is composed of two torsion springs with collinear axes, one end of each of the two torsion springs extending from the tail ends is a working end 322, and the other end of each of the two torsion springs extending from the tail ends is a rotating end 321; the rotating end 321 is fixedly connected with the rotating shaft 3, the working end 322 is fixedly connected with the valve flap 31, the rotating shaft 3 is rotated to a proper angle and drives the rotating end 321 of the torsion spring 32 to be twisted, so that the torsion spring 32 generates a twisting force and transmits the twisting force to the working end 322 of the torsion spring 32, and the valve flap 31 on the working end 322 obtains a propelling force along the closing direction of the valve flap 31.
As shown in fig. 3 and 4, a spline shaft 33 collinear with the axial lead of the rotating shaft 3 is disposed at one end of the rotating shaft 3 located at the inner side of the valve body 1, a flower-shaped groove 13 in clearance fit with the spline shaft 33 is disposed on the inner wall of one side of the valve body 1 away from the operating head 34, the rotating shaft 3 cannot rotate after the spline shaft 33 is completely inserted into the flower-shaped groove 13, and the rotating shaft 3 can change the rotating angle when being moved out for controlling the rotating shaft 3 to rotate. The flower-shaped groove 13 is of a secondary structure and comprises a primary groove 131 and a secondary groove 132 which are arranged along the same center line, the section of the secondary groove 132 is in a flower shape matched with the spline shaft 33, the section of the primary groove 131 is circular, and the spline shaft 33 can rotate in the primary groove 131 along the axis of the rotating shaft 3. The rotating shaft 3 can move along the axial lead direction of the rotating shaft 3 and enables the spline shaft 33 to move out of the flower-shaped groove 13 for a certain distance, so that the spline shaft 33 at the tail end of the rotating shaft 3 is separated from the secondary groove 132 and still stays in the primary groove 131, the rotating shaft 3 always stays in the flower-shaped groove 13 in the whole process, and the phenomenon that the rotating shaft 3 cannot enter the flower-shaped groove 13 due to the fact that the rotating shaft 3 deviates from the central line of the flower-shaped groove 13 is avoided.
As shown in fig. 3 and 4, a limiting block 37 which cannot pass through the operation hole 11 is arranged on the surface of the rotating shaft 3 in the direction close to the operation hole 11 on the inner side of the valve body 1, the moving distance of the rotating shaft 3 towards the outer side of the valve body 1 is greater than the depth of the secondary groove 132 and smaller than the depth of the whole flower-shaped groove 13 by the limiting block 37, so that the rotating shaft 3 can be moved out of the secondary groove 132, the rotating shaft 3 can be prevented from moving out of the whole flower-shaped groove 13 to disable the secondary groove 132, the rotating shaft 3 can not be completely moved out when moving towards the outer side of the valve body 1 along the axis of the rotating shaft 3, the structure in the valve body.
As shown in fig. 5 and 6, the rotating shaft 3 is fixedly connected with a sealing disc 36 at the outer side position of the valve body 1; the sealing disc 36 is cylindrical, the axial line of the sealing disc 36 is collinear with the rotating shaft 3, and the diameter of the sealing disc 36 is larger than that of the operation hole 11, so that the sealing disc 36 can cover the operation hole 11; the rotating shaft 3 and the outer side of the valve body 1 are respectively provided with a fastening device integrally, the sealing disc 36 is pressed at the operation hole 11 on the surface of the valve body 1 to seal the operation hole 11, and the fastening device comprises a connecting ring 35 and a connecting seat 12 arranged on the outer wall of the valve body 1; the connecting ring 35 is collinear with the axial lead of the rotating shaft 3, and the inner wall of the connecting ring 35 is provided with internal threads; one end of the connecting ring 35, which is far away from the valve body 1, is in a semi-closed state, the end surface of the connecting ring 35, which is far away from one end of the valve body 1, is provided with a movable hole 351 which is smaller in diameter than the sealing disc 36 and is circular in shape with the same axis as the connecting ring 35, so that the connecting ring 35 is sleeved between the sealing disc 36 and the operating head 34 on the rotating shaft 3, and the connecting ring 35 can rotate between the sealing disc 36 and the operating head 34 and move along the axis direction of the rotating; the connecting seat 12 is in a circular tube shape with the same axis as the operating hole 11, and the inner diameter of the connecting seat is the same as the diameter of the operating hole 11; the outer side of the connecting seat 12 is provided with an external thread matched with the internal thread; go-between 35 and connecting seat 12 make go-between 35, sealed dish 36, wholly fix through threaded connection, play sealed and fixed effect to valve body 1, make pivot 3 adjust the back fastening that finishes on valve body 1, prevent that pivot 3 from not being fixed the maloperation condition of appearing, and connecting seat 12 keeps away from 1 end surface of valve body and has inlayed rubber circle 121 for further improve sealed dish 36 and locate the leakproofness.
The operation flow of this embodiment is as follows:
when this adjustable swing check valve is installed in non-horizontal pipeline, it is applicable in two kinds of situations.
When the adjustable swing check valve is installed in a non-horizontal pipeline and a medium flows from bottom to top, the valve flap 31 is positioned at the medium inlet 4 at the lower end of the check valve and can rotate towards the direction of the medium inlet 4 to cover the medium inlet 4, when the medium flows from bottom to top in the forward direction, the rotating shaft 3 in the valve body 1 is not required to be adjusted, the upward propelling force generated by the upward flow of the medium overcomes the self gravity of the valve flap 31 and the potential energy generated by a spring to push the valve flap 31 to a certain angle, so that the medium passes through the valve body 1; when the medium flows reversely from top to bottom, the valve flap 31 covers the medium inlet 4 due to the self gravity of the valve flap 31 and the thrust of the medium, and the check function is realized.
The adjustable swing check valve is arranged in a non-horizontal pipeline, when a medium flows from top to bottom, the valve flap 31 is positioned at the medium inlet 4 at the upper end of the check valve and can rotate towards the direction of the medium inlet 4 to cover the medium inlet 4, and the medium rushes off the valve flap 31 through the medium inlet 4 and flows out from the medium outlet 5; the non-return function can be realized by opening the valve cover 2, rotating the rotating shaft 3 in the valve body 1 to a proper angle and driving the rotating end 321 of the torsion spring 32 to twist, so that the torsion spring 32 generates a twisting force and transmits the twisting force to the working end 322, and the valve clack 31 on the working end 322 obtains a propelling force along the closing direction of the valve clack 31; the rotating shaft 3 extends to the outer side of the valve body 1 through the operation hole 11, so that the propelling force required by the valve clack 31 can be adjusted by screwing the rotating shaft 3 through the operation head 34 outside the valve body 1, the valve cover 2 does not need to be opened, and the whole operation process is more convenient; before the rotating shaft 3 is adjusted, the spline shaft 33 on the rotating shaft 3 completely enters the flower-shaped groove 13, the rotating shaft 3 moves to the outside of the secondary groove 132 and the inside of the primary groove 131 towards the side far away from the valve body 1 along the axial lead during adjustment, so that the flower-shaped groove 13 cannot limit the rotation of the spline shaft 33, and after the adjustment is finished, the rotating shaft 3 resets due to the elastic force of the torsion spring 32 along the axial lead direction of the rotating shaft 3, so that the spline shaft 33 enters the secondary groove 132 of the flower-shaped groove 13 again; when the spline shaft 33 on the rotating shaft 3 enters the secondary groove 132 of the flower-shaped groove 13, the rotating shaft 3 can not rotate, the rotating shaft 3 is prevented from reversing because of the reset of the torsion spring 32, and otherwise, the rotating shaft 3 can rotate; after the rotating shaft 3 is adjusted, the sealing disc 36 between the rotating shaft 3 and the connecting seat 12 is in threaded connection with the valve body 1 through the connecting ring 35 and the connecting seat 12, so that the rotating shaft 3 is fastened on the valve body 1 after being adjusted, the effect of sealing the valve body 1 and fixing the rotating shaft 3 is achieved, and the phenomenon that the rotating shaft 3 is not fixed and misoperation occurs is prevented. The adjustable swing check valve is installed in a non-horizontal pipeline, and when the valve clack 31 rotates upwards to close the medium inlet 4, the valve clack 31 rotates by a certain angle through the rotating shaft 3, so that the propelling force borne by the valve clack 31 is greater than the opposite resistance generated by the gravity of the valve clack 31, the valve clack 31 is still in a closed state under the non-working state, and the medium can overcome the torsional force generated by the torsional spring 32 through the gravity force to smoothly flush the valve clack 31 to avoid blockage under the working state, and the effect of preventing the medium from flowing back when the medium flows from top to bottom in the non-horizontal pipeline is realized. Simple structure, practicality and reliability.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (6)
1. An adjustable swing check valve comprises a valve body (1), a valve cover (2), a rotating shaft (3) arranged in the valve body (1) and a valve clack (31); a medium inlet (4) and a medium outlet (5) are respectively arranged at two ends of the valve body (1); the flap (31) can be pivoted towards the medium inlet (4) and closes it, characterized in that: a torsion spring (32) is sleeved on the rotating shaft (3); the torsion spring (32) extends out of two ends, one end is a rotating end (321), and the other end is a working end (322); the working end (322) is fixedly connected with the valve clack (31), and the rotating end (321) is fixedly connected with the rotating shaft (3); a spline shaft (33) extending along the axial direction is arranged at one end of the rotating shaft (3), and a flower-shaped groove (13) matched with the spline shaft (33) is arranged in the valve body (1) and corresponds to one side of the spline shaft (33); the rotating shaft (3) can move along the axial lead direction of the rotating shaft (3), and the movable distance is greater than the length of the spline shaft (33); an operation hole (11) in clearance fit with the rotating shaft (3) is formed in the surface of one side, away from the spline shaft (33), of the outer side of the valve body (1); one end of the rotating shaft (3), which is far away from the spline shaft (33), extends out of the operation hole (11) and is provided with an operation head (34) at the end part; a sealing disc (36) which is cylindrical in shape is arranged on the rotating shaft (3) between the operating head (34) and the outer wall of the valve body (1); the axial lines of the sealing disc (36) and the operation hole (11) are collinear, and the diameter of the sealing disc (36) is larger than that of the operation hole (11); the adjustable swing check valve further comprises a fastening device for pressing the sealing disc (36) on the surface of the valve body (1) to seal the operation hole (11); the fastening device comprises a connecting ring (35) and a connecting seat (12) arranged on the outer wall of the valve body (1); the connecting ring (35) is collinear with the axial lead of the rotating shaft (3), and internal threads are arranged on the inner wall of the connecting ring (35); one end of the connecting ring (35), which is far away from the valve body (1), is provided with a movable hole (351) which has a diameter smaller than that of the sealing disc (36) and is coaxial with the connecting ring (35) and is circular; the connecting ring (35) is sleeved between the sealing disc (36) on the rotating shaft (3) and the operating head (34) through a movable hole (351); the connecting seat (12) is in a circular tube shape with the same axis as the operating hole (11), and the inner diameter of the connecting seat is the same as the diameter of the operating hole (11); and the outer side of the connecting seat (12) is provided with an external thread matched with the internal thread of the connecting ring (35).
2. The adjustable swing check valve of claim 1, wherein: the end face of the connecting seat (12) far away from one end of the valve body (1) is embedded with a rubber ring (121).
3. The adjustable swing check valve of claim 1, wherein: the operating head (34) is cylindrical in shape; the diameter of the operating head (34) is larger than that of a movable hole (351) on the connecting ring (35).
4. The adjustable swing check valve of claim 1, wherein: and a hexagonal groove is formed in one end, far away from the valve body (1), of the operating head (34).
5. The adjustable swing check valve of claim 1, wherein: the flower-shaped groove (13) is of a secondary structure and comprises a primary groove (131) and a secondary groove (132) which are arranged along the same center line, the section of the secondary groove (132) is a flower shape matched with the spline shaft (33), the section of the primary groove (131) is circular, and the spline shaft (33) can rotate in the primary groove (131) along the axis of the rotating shaft (3).
6. The adjustable swing check valve of claim 1, wherein: and a limiting block (37) which cannot pass through the operation hole (11) is arranged on the surface of the rotating shaft (3) in the direction of the inner side of the valve body (1) close to the operation hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910683243.2A CN110360352B (en) | 2019-07-26 | 2019-07-26 | Adjustable swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910683243.2A CN110360352B (en) | 2019-07-26 | 2019-07-26 | Adjustable swing check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110360352A CN110360352A (en) | 2019-10-22 |
| CN110360352B true CN110360352B (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910683243.2A Active CN110360352B (en) | 2019-07-26 | 2019-07-26 | Adjustable swing check valve |
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| Country | Link |
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| CN (1) | CN110360352B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113859983A (en) * | 2021-09-27 | 2021-12-31 | 张家口宣化华泰矿冶机械有限公司 | Resin cartridge conveying device |
| CN115773394B (en) * | 2023-02-13 | 2023-05-02 | 通威微电子有限公司 | Residual pressure valve and air conditioning chamber |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172424A (en) * | 1962-07-24 | 1965-03-09 | Crawford K Stillwagon | Disc type check valve |
| FR2432663A1 (en) * | 1978-08-02 | 1980-02-29 | Constantin Pierre | Flap valve with tangential axle - opens at rate set by torsion springs of which tension is adjusted by rotating head of lockable axle |
| US4304255A (en) * | 1979-05-31 | 1981-12-08 | K-F Prince Valve, Inc. | Swing check valve |
| WO1997008481A1 (en) * | 1995-08-29 | 1997-03-06 | Kabushiki Kaisha Yokota Seisakusho | Swing type non-water hammer check valve |
| KR100323891B1 (en) * | 1999-01-27 | 2002-02-07 | 장종복 | Elasticity control device for spring hinge |
| WO2001029461A1 (en) * | 1999-10-18 | 2001-04-26 | Polaris Pool Systems, Inc. | Flow controller for a pool cleaner |
| JP4301836B2 (en) * | 2003-03-05 | 2009-07-22 | 株式会社森田鉄工所 | Butterfly check valve |
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2019
- 2019-07-26 CN CN201910683243.2A patent/CN110360352B/en active Active
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| Publication number | Publication date |
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| CN110360352A (en) | 2019-10-22 |
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Address after: No. 29, Yangliu Road, Wenzhou Economic and Technological Development Zone, 325000, Zhejiang Province Patentee after: Zhongchi Valve Group Co.,Ltd. Address before: No. 29, Yangliu Road, Wenzhou Economic and Technological Development Zone, 325000, Zhejiang Province Patentee before: Zhejiang Zhongchi valve industry Co.,Ltd. |
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