CN219570888U - Check butterfly valve capable of being cut off rapidly - Google Patents
Check butterfly valve capable of being cut off rapidly Download PDFInfo
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- CN219570888U CN219570888U CN202321032881.6U CN202321032881U CN219570888U CN 219570888 U CN219570888 U CN 219570888U CN 202321032881 U CN202321032881 U CN 202321032881U CN 219570888 U CN219570888 U CN 219570888U
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- valve
- shaft
- sleeve
- shaft hole
- butterfly plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a quick-cut check butterfly valve, which comprises a valve body, a butterfly plate and a valve rod, wherein the valve body is provided with an upper shaft hole and a lower shaft hole which are coaxial, the valve rod is rotatably arranged on the upper shaft hole and the lower shaft hole, the butterfly plate is mounted on the valve rod in a linkage manner, a valve seat is arranged in the valve body, a bracket is further arranged on the valve body, and an actuator is mounted on the bracket; the valve rod comprises a valve shaft and a driving shaft, two ends of the valve shaft are respectively arranged in an upper shaft hole and a lower shaft hole in a rotating mode, one end of the driving shaft, far away from the actuator, penetrates into the upper shaft hole, driving protrusions are integrally arranged at the position, close to the periphery, of one end of the driving shaft, close to the periphery, of the upper shaft hole, and a movable groove used for enabling the driving protrusions to circumferentially move and a stop block used for propping against the driving protrusions are integrally arranged at one end, located in the upper shaft hole, of the valve shaft. The utility model has the functions of stopping and stopping, realizes the dual-purpose effect of a valve, not only can reduce the use cost and the pipeline volume, but also can ensure the safe sealing when the pump is stopped for a long time or repaired.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a quick-cut check butterfly valve.
Background
Check valves are commonly used at the water pump outlets of various pump stations in the fields of iron and steel, metallurgy, electric power, petrochemical industry, chemical industry, tap water, papermaking, pharmacy, environmental protection, water supply and drainage, municipal construction and other industries. The check valve is also called as one-way valve or check valve, is an automatic opening and closing valve which does not need manpower or other action operation, and is opened or closed by means of the flow of pipeline medium, and is mainly used for preventing the medium in the pipeline from flowing backwards.
However, in actual use, to shut down the pump for a long period of time or to make a repair to the pump, a shut-off valve is often provided in combination with a check valve, which in combination ensures a secure seal. However, the two valves are matched for use, so that the use cost is high, the volume of a pipeline can be increased, and the pipeline is greatly restricted by the environment.
Disclosure of Invention
The utility model aims to provide a quick-cut check butterfly valve, which has the functions of cut-off and check, realizes the dual-purpose effect of a valve, can reduce the use cost, reduce the volume of a pipeline, has wider application range, and can ensure the safety seal when a pump is stopped for a long time or repaired.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the quick-cutoff check butterfly valve comprises a valve body, a butterfly plate and a valve rod, wherein an upper shaft hole and a lower shaft hole which are coaxial are formed in the valve body, the valve rod is rotatably arranged on the upper shaft hole and the lower shaft hole, the butterfly plate is mounted on the valve rod in a linkage manner, a valve seat which is used for being in sealing fit with the butterfly plate is arranged in the valve body, a support is further arranged on the valve body, and an actuator for driving the valve rod to rotate is mounted on the support; the valve rod comprises a valve shaft connected with the butterfly plate and a driving shaft connected with the output end of the actuator, two ends of the valve shaft are respectively arranged in the upper shaft hole and the lower shaft hole in a rotating mode, one end of the driving shaft, far away from the actuator, goes deep into the upper shaft hole, driving protrusions are integrally arranged at the position, close to the periphery, of one end of the driving shaft, close to the periphery, of the upper shaft hole, and a movable groove used for enabling the driving protrusions to circumferentially move and a stop block used for propping against the driving protrusions are integrally arranged at one end, located in the upper shaft hole, of the valve shaft.
By adopting the technical scheme, when the check function is achieved, the actuator does not work, the driving bulge on the driving shaft is positioned in the movable groove of the valve shaft, the driving bulge on the driving shaft is separated from the stop block on the valve shaft, the butterfly plate is pushed open by medium pressure to open the valve, and meanwhile, under the dead weight of the medium and the butterfly plate, the butterfly plate is abutted against the valve seat to close the valve; when the function is cut off, the actuator drives the driving shaft to rotate, the driving shaft drives the driving protrusion to rotate, and when the driving protrusion abuts against the stop block on the valve shaft, kinetic energy is transferred to the stop block, so that the stop block drives the valve shaft to rotate, the rotation of the butterfly plate is realized until the sealing surface of the butterfly plate abuts against the sealing surface of the valve seat, and the safety sealing of the valve is realized. Therefore, the utility model has the functions of stopping and stopping, realizes the effect of dual purposes of one valve, not only can reduce the use cost and the pipeline volume, but also can ensure the safe sealing when the pump is stopped or repaired for a long time.
The utility model is further arranged that the driving protrusion is a fan-shaped structure extending from the center of the driving shaft to the periphery, the stop block is a fan-shaped structure extending from the center of the valve shaft to the periphery, and the radian of the movable groove is larger than that of the driving protrusion.
By adopting the technical scheme, the clutch has the advantages of simple and reliable structure, stable action and very convenient processing.
The utility model is further arranged that a reserved included angle with an angle of 5 degrees is arranged between one side edge of the driving protrusion and one side edge of the stop block when the butterfly plate is propped against the valve seat.
Through adopting above-mentioned technical scheme, set up the contained angle of reservation and not only can reduce the machining precision requirement, the processing production of being convenient for can avoid the valve to close for a long time moreover the protruding dog that dies of drive, causes local damage.
The utility model is further arranged such that the central axis of the valve stem is offset from the central axis of the valve body, the valve seat is arranged obliquely to the central axis of the valve body, such that the inner wall of the valve seat forms a conical surface, and the central axis of the valve stem is offset from the central axis of the butterfly plate.
By adopting the technical scheme, the valve has lower opening torque, reduces friction when the valve is opened and closed under high pressure, and has longer service life.
The butterfly plate opening device is further characterized in that a limiting block used for limiting the butterfly plate during opening is arranged on the inner wall of the valve body.
Through adopting above-mentioned technical scheme, can restrict the butterfly plate and open the stroke, produce the striking with the valve body inner wall when avoiding the butterfly plate to open entirely to lead to spare part damage.
The butterfly valve is characterized in that the butterfly plate is provided with a pressing ring and a sealing ring, the pressing ring is connected with the butterfly plate through a plurality of screws, the sealing ring is clamped between the pressing ring and the butterfly plate, and the outer circle of the sealing ring protrudes out of the outer periphery of the butterfly plate and is used for being in sealing fit with the inner peripheral surface of the valve seat.
Through adopting above-mentioned technical scheme, not only can promote the sealing performance when the valve closes, sealing washer detachable design moreover is convenient for change ageing sealing washer when following maintenance.
The butterfly plate is further provided with a first mounting sleeve and a second mounting sleeve which are symmetrically arranged and matched with the valve shaft, the first mounting sleeve is connected with the valve shaft through a key, and the second mounting sleeve is connected with the valve shaft through a fastener in a linkage mode.
Through adopting above-mentioned technical scheme, can realize the linkage of valve shaft and butterfly plate, and connection structure is simple reliable, and production is very convenient.
The utility model is further arranged to further comprise an upper sealing assembly and a lower sealing assembly which are respectively arranged on the upper shaft hole and the lower shaft hole, wherein the upper sealing assembly comprises a gland, a pressing sleeve, sealing filler, a gasket and an upper shaft sleeve which are sleeved on the periphery of the valve rod, the inner end of the upper shaft hole is provided with a first limit step, and the gland is connected with the bracket through a bolt and compresses the pressing sleeve, the sealing filler, the gasket and the upper shaft sleeve on the first limit step; the lower sealing assembly comprises an end cover, a supporting sleeve and a lower shaft sleeve, wherein the supporting sleeve and the lower shaft sleeve are sleeved on the periphery of the valve rod, a second limiting step is arranged at the inner end of the lower shaft hole, the end cover is arranged at the position corresponding to the outer end of the valve body through a screw and compresses the supporting sleeve and the lower shaft sleeve on the second limiting step, and a supporting flange for propping against the end part of the valve rod is further arranged on the supporting sleeve.
By adopting the technical scheme, the sealing performance between the valve rod and the valve body can be improved, the friction force is small, and the opening and closing torque of the valve is reduced.
The utility model further provides that the valve rod further comprises an upper dust cover and a lower dust cover which are sleeved on the periphery of the valve rod, wherein the upper dust cover is clamped between the upper shaft sleeve and the first mounting sleeve, and the lower dust cover is clamped between the lower shaft sleeve and the second mounting sleeve.
By adopting the technical scheme, the sealing performance between the valve rod and the valve body can be further improved, so that the valve rod can stably work in a severe environment.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the K-K switch of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the K-K device of FIG. 1;
FIG. 4 is a schematic view of the upper seal assembly of the present utility model;
FIG. 5 is a schematic view of the lower seal assembly of the present utility model;
FIG. 6 is a schematic diagram of the state of the utility model when the whole is fully closed;
fig. 7 is a schematic diagram of the state of the utility model when the whole device is fully opened.
In the figure: 1. a valve body; 2. a butterfly plate; 3. a valve stem; 4. an upper shaft hole; 5. a lower shaft hole; 6. a valve seat; 7. a bracket; 8. an actuator; 9. a valve shaft; 10. a drive shaft; 11. driving the protrusion; 12. a movable groove; 13. a stop block; 14. reserving an included angle; 15. a limiting block; 16. a pressing ring; 17. a seal ring; 18. a first mounting sleeve; 19. a second mounting sleeve; 20. an upper seal assembly; 21. a lower seal assembly; 22. a gland; 23. pressing the sleeve; 24. sealing filler; 25. a gasket; 26. an upper shaft sleeve; 27. a first limit step; 28. an end cap; 29. a support sleeve; 30. a lower shaft sleeve; 31. a second limit step; 32. a support flange; 33. a dust cover is arranged on the upper part; 34. and a lower dust cover.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples: the quick-cutoff check butterfly valve comprises a valve body 1, a butterfly plate 2 and a valve rod 3, wherein an upper shaft hole 4 and a lower shaft hole 5 which are coaxial are formed in the valve body 1, the valve rod 3 is rotatably arranged on the upper shaft hole 4 and the lower shaft hole 5, the butterfly plate 2 is mounted on the valve rod 3 in a linkage manner, a valve seat 6 used for being in sealing fit with the butterfly plate 2 is arranged in the valve body 1, the valve seat 6 and the valve body 1 are of an integrated structure, a bracket 7 is further arranged on the valve body 1 and is directly mounted on the valve body 1 through bolts, an actuator 8 used for driving the valve rod 3 to rotate is mounted on the bracket 7, and the actuator 8 is a motor or a cylinder or a hydraulic cylinder; the valve rod 3 includes the valve shaft 9 that is connected with butterfly plate 2 and the drive shaft 10 that is connected with the output of executor 8, the both ends of valve shaft 9 rotate respectively and set up in last shaft hole 4 and lower shaft hole 5, the one end that executor 8 was gone into in the shaft hole 4 is gone into to drive shaft 10 stretches into the position that shaft hole 4 one end is close to the periphery an organic whole and is provided with drive protruding 11, the one end that valve shaft 9 is located in the shaft hole 4 an organic whole is provided with the movable groove 12 that is used for supplying drive protruding 11 circumference activity and is used for the dog 13 with drive protruding 11 offset, and movable groove 12 and dog 13 form a full circle promptly. When the check function is achieved, the actuator 8 does not work, the driving protrusion 11 on the driving shaft 10 is positioned in the movable groove 12 of the valve shaft 9, the driving protrusion 11 on the driving shaft 10 is separated from the stop block 13 on the valve shaft 9, the butterfly plate 2 is pushed open by medium pressure to open the valve, and meanwhile, under the action of dead weight of the medium and the butterfly plate 2, the butterfly plate 2 is abutted against the valve seat 6 to close the valve; when the function is cut off, the actuator 8 drives the driving shaft 10 to rotate, the driving shaft 10 drives the driving protrusion 11 to rotate, and when the driving protrusion 11 abuts against the stop block 13 on the valve shaft 9, kinetic energy is transferred to the stop block 13, so that the stop block 13 drives the valve shaft 9 to rotate, the rotation of the butterfly plate 2 is realized until the sealing surface of the butterfly plate 2 abuts against the sealing surface of the valve seat 6, and the safety seal of the valve is realized. Therefore, the utility model has the functions of stopping and stopping, realizes the effect of dual purposes of one valve, not only can reduce the use cost and the pipeline volume, but also can ensure the safe sealing when the pump is stopped or repaired for a long time.
As shown in fig. 2 and 3, the driving protrusion 11 is a fan-shaped structure extending from the center of the driving shaft 10 to the outer periphery, the stopper 13 is a fan-shaped structure extending from the center of the valve shaft 9 to the outer periphery, and the arc of the movable groove 12 is larger than the arc of the driving protrusion 11, in this embodiment, the driving protrusion 11 has the same structure as the stopper 13. The clutch has simple and reliable structure, stable action and very convenient processing.
As shown in fig. 2, when the butterfly plate 2 abuts against the valve seat 6, a reserved angle 14 with an angle of 5 ° is provided between one side of the driving protrusion 11 and one side of the stop block 13. The reserved included angle 14 can reduce the machining precision requirement, is convenient for machining and production, and can prevent the driving protrusion 11 from pressing the stop block 13 to cause local damage when the valve is closed for a long time. It should be noted that the included reserved angle 14 may not be set.
As shown in fig. 6, the central axis of the valve stem 3 is arranged offset from the central axis of the valve body 1, the valve seat 6 is arranged obliquely to the central axis of the valve body 1, so that the inner wall of the valve seat 6 forms a conical surface, and the central axis of the valve stem 3 is arranged offset from the central axis of the butterfly plate 2. The design makes the valve opening torque lower, reduces the friction when the valve is opened and closed under high pressure, and has longer service life.
As shown in fig. 7, a limiting block 15 for limiting the opening motion of the butterfly plate 2 is arranged on the inner wall of the valve body 1, and the limiting block 15 is welded on the inner wall of the valve body 1. The stopper 15 can restrict the butterfly plate 2 and open the stroke, produces the striking with the valve body 1 inner wall when avoiding butterfly plate 2 to open fully to lead to spare part damage.
As shown in fig. 6, the butterfly plate 2 is provided with a pressing ring 16 and a sealing ring 17, the pressing ring 16 is connected with the butterfly plate 2 through a plurality of screws, the sealing ring 17 is clamped between the pressing ring 16 and the butterfly plate 2, and the outer circle of the sealing ring 17 protrudes out of the outer periphery of the butterfly plate 2 to form sealing fit with the inner peripheral surface of the valve seat 6. The design not only can promote the sealing performance when the valve is closed, but also the sealing ring 17 is detachable, so that the aged sealing ring 17 can be replaced during subsequent maintenance.
As shown in figure 1, the butterfly plate 2 is provided with a first mounting sleeve 18 and a second mounting sleeve 19 which are symmetrically arranged and matched with the valve shaft 9, the first mounting sleeve 18 is connected with the valve shaft 9 in a key way, the second mounting sleeve 19 is connected with the valve shaft 9 in a linkage way through a fastening piece (pin), wherein the first mounting sleeve 18 and the second mounting sleeve 19 are welded on the butterfly plate 2 or are of an integral structure with the butterfly plate 2, the cross sections of the first mounting sleeve 18 and the second mounting sleeve 19 are triangular, and the middle parts of the first mounting sleeve 18 and the second mounting sleeve 19 are respectively provided with a round hole for the valve shaft 9 to pass through. The linkage of valve shaft 9 and butterfly plate 2 can be realized to this design, and connection structure is simple reliable, and production is very convenient.
As shown in fig. 1, 4 and 5, the valve rod further comprises an upper sealing assembly 20 and a lower sealing assembly 21 which are respectively arranged on the upper shaft hole 4 and the lower shaft hole 5, the upper sealing assembly 20 comprises a gland 22, a gland bush 23, a sealing packing 24, a gasket 25 and an upper shaft sleeve 26 which are sleeved on the periphery of the valve rod 3, the inner end of the upper shaft hole 4 is provided with a first limiting step 27, the gland 22 is connected with the bracket 7 through a bolt, and the gland bush 23, the sealing packing 24, the gasket 25 and the upper shaft sleeve 26 are pressed on the first limiting step 27; the lower sealing assembly 21 comprises an end cover 28, a support sleeve 29 and a lower shaft sleeve 30, wherein the support sleeve 29 and the lower shaft sleeve 30 are sleeved on the periphery of the valve rod 3, a second limiting step 31 is arranged at the inner end of the lower shaft hole 5, the end cover 28 is arranged at the position corresponding to the outer end of the valve body 1 through screws, the support sleeve 29 and the lower shaft sleeve 30 are pressed on the second limiting step 31, and a support flange 32 for propping against the end part of the valve rod 3 is further arranged on the support sleeve 29. The design not only can promote the sealing performance between the valve rod 3 and the valve body 1, but also has small friction force, and reduces the opening and closing torque of the valve.
As shown in fig. 4 and fig. 5, the valve rod further comprises an upper dust-proof sleeve 33 and a lower dust-proof sleeve 34 which are sleeved on the periphery of the valve rod 3, the upper dust-proof sleeve 33 is clamped between the upper shaft sleeve 26 and the first mounting sleeve 18, the lower dust-proof sleeve 34 is clamped between the lower shaft sleeve 30 and the second mounting sleeve 19, and the outer ends of the two dust-proof sleeves are respectively provided with a limiting convex edge which is abutted against a limiting step in a corresponding shaft hole so as to prevent the dust-proof sleeve from sliding into the inner cavity of the valve body 1 entirely. The design can further improve the sealing performance between the valve rod 3 and the valve body 1, so that the valve can stably work in a severe environment.
Claims (9)
1. The utility model provides a quick check butterfly valve that cuts, includes valve body (1), butterfly plate (2) and valve rod (3), coaxial upper shaft hole (4) and lower shaft hole (5) have been seted up on valve body (1), valve rod (3) rotate and set up on upper shaft hole (4) and lower shaft hole (5), butterfly plate (2) linkage is installed on valve rod (3), be equipped with in valve body (1) be used for with butterfly plate (2) constitution sealing fit's disk seat (6), still be equipped with support (7) on valve body (1), install on support (7) and be used for driving valve rod (3) pivoted executor (8); the method is characterized in that: the valve rod (3) comprises a valve shaft (9) connected with the butterfly plate (2) and a driving shaft (10) connected with the output end of the actuator (8), two ends of the valve shaft (9) are respectively arranged in the upper shaft hole (4) and the lower shaft hole (5) in a rotating mode, one end of the driving shaft (10) away from the actuator (8) penetrates into the upper shaft hole (4), a driving protrusion (11) is integrally arranged at a part, close to the periphery, of one end of the driving shaft (10) extending into the upper shaft hole (4), and a movable groove (12) for enabling the driving protrusion (11) to circumferentially move and a stop block (13) for abutting against the driving protrusion (11) are integrally arranged at one end of the valve shaft (9) located in the upper shaft hole (4).
2. The quick cutoff check butterfly valve of claim 1, wherein: the driving protrusion (11) is a fan-shaped structure extending from the center of the driving shaft (10) to the periphery, the stop block (13) is a fan-shaped structure extending from the center of the valve shaft (9) to the periphery, and the radian of the movable groove (12) is larger than that of the driving protrusion (11).
3. A quick shut-off check butterfly valve according to claim 1 or 2, wherein: when the butterfly plate (2) is propped against the valve seat (6), a reserved included angle (14) with an angle of 5 degrees is arranged between one side edge of the driving protrusion (11) and one side edge of the stop block (13).
4. The quick cutoff check butterfly valve of claim 1, wherein: the central shaft of the valve rod (3) is deviated from the central shaft of the valve body (1), the valve seat (6) is inclined to the central shaft of the valve body (1), so that a conical surface is formed on the inner wall of the valve seat (6), and the central shaft of the valve rod (3) is deviated from the central shaft of the butterfly plate (2).
5. The quick cutoff check butterfly valve of claim 4, wherein: a limiting block (15) used for limiting the opening action of the butterfly plate (2) is arranged on the inner wall of the valve body (1).
6. The quick cutoff check butterfly valve of claim 4, wherein: be equipped with clamping ring (16) and sealing washer (17) on butterfly plate (2), clamping ring (16) are connected in butterfly plate (2) through a plurality of screws, sealing washer (17) clamp is established between clamping ring (16) and butterfly plate (2), and sealing washer (17) excircle department protrusion is used for constituting sealing fit with disk seat (6) inner peripheral in butterfly plate (2) periphery.
7. The quick cutoff check butterfly valve of claim 1, wherein: the butterfly plate (2) is symmetrically provided with a first mounting sleeve (18) and a second mounting sleeve (19) which are matched with the valve shaft (9), the first mounting sleeve (18) is in key connection with the valve shaft (9), and the second mounting sleeve (19) is in linkage connection with the valve shaft (9) through a fastener.
8. The quick cutoff check butterfly valve of claim 1, wherein: the sealing device comprises a valve rod (3), and is characterized by further comprising an upper sealing assembly (20) and a lower sealing assembly (21) which are respectively arranged on the upper shaft hole (4) and the lower shaft hole (5), wherein the upper sealing assembly (20) comprises a gland (22), a pressing sleeve (23), a sealing filler (24), a gasket (25) and an upper shaft sleeve (26) which are sleeved on the periphery of the valve rod (3), a first limiting step (27) is arranged at the inner end of the upper shaft hole (4), and the gland (22) is connected with a bracket (7) through bolts and compresses the pressing sleeve (23), the sealing filler (24), the gasket (25) and the upper shaft sleeve (26) on the first limiting step (27); the lower sealing assembly (21) comprises an end cover (28) and a supporting sleeve (29) and a lower shaft sleeve (30) which are sleeved on the periphery of the valve rod (3), a second limiting step (31) is arranged at the inner end of the lower shaft hole (5), the end cover (28) is arranged at the position corresponding to the outer end of the valve body (1) through screws, the supporting sleeve (29) and the lower shaft sleeve (30) are tightly pressed on the second limiting step (31), and a supporting flange (32) used for propping against the end part of the valve rod (3) is further arranged on the supporting sleeve (29).
9. The quick cutoff check butterfly valve of claim 8, wherein: the novel valve rod is characterized by further comprising an upper dustproof sleeve (33) and a lower dustproof sleeve (34) which are sleeved on the periphery of the valve rod (3), wherein the upper dustproof sleeve (33) is clamped between the upper shaft sleeve (26) and the first mounting sleeve (18), and the lower dustproof sleeve (34) is clamped between the lower shaft sleeve (30) and the second mounting sleeve (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321032881.6U CN219570888U (en) | 2023-04-27 | 2023-04-27 | Check butterfly valve capable of being cut off rapidly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321032881.6U CN219570888U (en) | 2023-04-27 | 2023-04-27 | Check butterfly valve capable of being cut off rapidly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219570888U true CN219570888U (en) | 2023-08-22 |
Family
ID=87658200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321032881.6U Active CN219570888U (en) | 2023-04-27 | 2023-04-27 | Check butterfly valve capable of being cut off rapidly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219570888U (en) |
-
2023
- 2023-04-27 CN CN202321032881.6U patent/CN219570888U/en active Active
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