CN219755367U

CN219755367U - Dual-purpose valve

Info

Publication number: CN219755367U
Application number: CN202321042866.XU
Authority: CN
Inventors: 侯晋峰; 叶盛来; 金衍海; 邱少官; 赵时毅; 杨凌兴
Original assignee: Tiangong Valve Group Co ltd
Current assignee: Tiangong Valve Group Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-09-26
Anticipated expiration: 2033-04-27

Abstract

The utility model discloses a dual-purpose valve, which includes a valve body, a butterfly plate and a valve stem. The valve body is provided with coaxial upper and lower shaft holes, and the valve stem is rotatably arranged on the upper and lower shaft holes. , the butterfly plate is installed on the valve stem in linkage, the valve body is provided with a valve seat, the valve body is also provided with a bracket, and an actuator is installed on the bracket; the valve stem includes a drive shaft and a valve shaft, one end of the valve shaft is set in the lower shaft hole Inside, the other end of the valve shaft rotates with the butterfly plate. The drive shaft penetrates the upper shaft hole, and one end of the drive shaft is linked with the output end of the actuator. The other end of the drive shaft is equipped with a push block on the outer periphery, and the butterfly plate is equipped with a push block. There is a linkage block that conflicts with the push block when the push block rotates circumferentially. There is a circumferential movable gap between the linkage block and the push block. The utility model has the functions of cut-off and check-back, realizing the dual-purpose effect of one valve. It can not only reduce the use cost, reduce the pipeline volume, and have a wider application range, but also ensure safe sealing when the pump is shut down or repaired for a long time.

Description

Dual-purpose valve

Technical Field

The utility model relates to the technical field of valves, in particular to a dual-purpose 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 dual-purpose valve, which has the functions of stopping and stopping, realizes the dual-purpose effect of one valve, can reduce the use cost, reduce the volume of a pipeline, has wider application range and can ensure the safety seal when the pump is stopped or repaired for a long time.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the dual-purpose 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 driving shaft and a valve shaft, one end of the valve shaft is arranged in the lower shaft hole, the other end of the valve shaft is in running fit with the butterfly plate, the driving shaft penetrates through the upper shaft hole, one end of the driving shaft is connected with the output end of the actuator in a linkage mode, a pushing block is arranged on the periphery of the other end of the driving shaft, a linkage block which is in contact with the pushing block when the pushing block rotates in the circumferential direction is arranged on the butterfly plate, and a circumferential movable gap is formed between the linkage block and the pushing block.

By adopting the technical scheme, when the check function is achieved, the actuator does not work, the pushing block on the driving shaft is separated from the linkage block on the butterfly plate, the butterfly plate is pushed open by the medium pressure to open the valve, and meanwhile, the butterfly plate is abutted against the valve seat under the dead weight of the medium and the butterfly plate to close the valve; when the function is cut off, the actuator drives the driving shaft to rotate, the driving shaft drives the pushing block to rotate, and when the pushing block abuts against the linkage block on the butterfly plate, kinetic energy is transferred to the linkage block, so that the linkage block drives the butterfly plate to rotate until the sealing surface of the butterfly plate abuts against the sealing surface of the valve seat, 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.

The utility model is further provided that the pushing block and the linkage block are arc-shaped, and the inner sides of the pushing block and the linkage block are attached to the outer side of the driving shaft.

By adopting the technical scheme, the clutch has the advantages of simple and reliable clutch structure, tight fit, stable action and very convenient processing and production.

The utility model is further characterized in that the pushing block is fixed or welded on the driving shaft through a pin shaft, and the linkage block is welded on the butterfly plate.

By adopting the technical scheme, the connecting structure is simple and reliable, and the processing is very convenient.

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, the first mounting sleeve and the second mounting sleeve are respectively sleeved on the periphery of the driving shaft and the periphery of 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, carry out spacingly through drive shaft and valve shaft to the butterfly plate, make it remain throughout around the rotation of valve rod center pin, guarantee the stability that the valve opened and close.

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 driving shaft, 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 shaft, 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 shaft 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 is further arranged to further comprise an upper dust-proof sleeve and a lower dust-proof sleeve which are respectively sleeved on the peripheries of the driving shaft and the valve shaft, wherein the upper dust-proof sleeve is clamped between the upper shaft sleeve and the first mounting sleeve, and the lower dust-proof sleeve 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 actuator action of FIG. 1 with K-K fully closed;

FIG. 3 is a schematic cross-sectional view of the actuator reset during K-K full closure of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the actuator reset in FIG. 1 with K-K fully open;

FIG. 5 is a schematic view of the upper seal assembly of the present utility model;

FIG. 6 is a schematic view of the lower seal assembly of the present utility model;

FIG. 7 is a schematic diagram of the state of the utility model when the whole is fully closed;

fig. 8 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. a pushing block; 12. a linkage block; 13. a clearance gap; 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 dual-purpose valve as shown in the accompanying drawings 1-8 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 drive shaft 10 and valve shaft 9, the one end setting of valve shaft 9 is in lower shaft hole 5, and the other end and the butterfly plate 2 normal running fit of valve shaft 9, drive shaft 10 runs through shaft hole 4, and the one end of drive shaft 10 is connected with the output linkage of executor 8, the periphery of the other end of drive shaft 10 is equipped with ejector pad 11, be equipped with on the butterfly plate 2 when ejector pad 11 circumference rotates with ejector pad 11 inconsistent linkage piece 12, be equipped with circumference clearance 13 between linkage piece 12 and the ejector pad 11, clearance 13, ejector pad 11 and linkage piece 12 form a complete ring promptly. When the check function is achieved, the actuator 8 does not work, the pushing block 11 on the driving shaft 10 is separated from the linkage block 12 on the butterfly plate 2, the butterfly plate 2 is pushed open by medium pressure to open the valve, and meanwhile, under the 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 pushing block 11 to rotate, and when the pushing block 11 abuts against the linkage block 12 on the butterfly plate 2, kinetic energy is transferred to the linkage block 12, so that the linkage block 12 drives the butterfly plate 2 to rotate until the sealing surface of the butterfly plate 2 abuts against the sealing surface of the valve seat 6, 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.

As shown in fig. 2 to 4, the push block 11 and the linkage block 12 are both arc-shaped, and the inner sides of the push block 11 and the linkage block 12 are attached to the outer side of the driving shaft 10, in this embodiment, the push block 11 and the linkage block 12 have the same structure. The clutch has simple and reliable structure, tight fit, stable action and very convenient processing and production.

As shown in fig. 2, the pushing block 11 is fixed or welded on the driving shaft 10 through a pin shaft, and the linkage block 12 is welded on the butterfly plate 2. In this embodiment, the push block 11 is connected to the outside of the driving shaft 10 through two pins, the two pins are symmetrically arranged on the push block 11, and the outer peripheral side of the linkage block 12 is welded to the butterfly plate 2. The connecting structure is simple and reliable, and the processing is very convenient.

As shown in fig. 7, 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. 8, 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. 7, 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, the first mounting sleeve 18 and the second mounting sleeve 19 are respectively sleeved on the peripheries of the driving shaft 10 and the valve shaft 9, namely, a first mounting hole and a second mounting hole for the driving shaft 10 and the valve shaft 9 to pass through are respectively formed in the first mounting sleeve 18 and the second mounting sleeve 19, the first mounting sleeve 18 is connected with the valve shaft 9 through keys, and the second mounting sleeve 19 is connected with the valve shaft 9 through a fastener in a linkage manner. The butterfly plate 2 is limited through the driving shaft 10 and the valve shaft 9, so that the butterfly plate always rotates around the central shaft of the valve rod 3, and the opening and closing stability of the valve is ensured.

As shown in fig. 1, 5 and 6, the upper sealing assembly 20 and the lower sealing assembly 21 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 driving shaft 10, 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 bolts, 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 supporting sleeve 29 and a lower shaft sleeve 30, wherein the supporting sleeve 29 and the lower shaft sleeve 30 are sleeved on the periphery of the valve shaft 9, 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 pressed on the second limiting step 31, and a supporting flange 32 for propping against the end part of the valve shaft 9 is further arranged on the supporting 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. 5 and 6, the valve further comprises an upper dust-proof cover 33 and a lower dust-proof cover 34 respectively sleeved on the peripheries of the driving shaft 10 and the valve shaft 9, the upper dust-proof cover 33 is clamped between the upper shaft sleeve 26 and the first mounting sleeve 18, the lower dust-proof cover 34 is clamped between the lower shaft sleeve 30 and the second mounting sleeve 19, and the outer ends of the two dust-proof covers are respectively provided with a limiting convex edge which is used for abutting against a limiting step in the corresponding shaft hole so as to prevent the whole dust-proof cover from sliding into the inner cavity of the valve body 1. 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

1. The utility model provides a dual-purpose valve, 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) include with drive shaft (10) and valve shaft (9), the one end setting of valve shaft (9) is in lower shaft hole (5), the other end and butterfly plate (2) normal running fit of valve shaft (9), shaft hole (4) are run through in drive shaft (10), and the one end and the output linkage of executor (8) of drive shaft (10) are connected, the periphery of the other end of drive shaft (10) is equipped with ejector pad (11), be equipped with on butterfly plate (2) with ejector pad (11) inconsistent linkage piece (12) when ejector pad (11) circumferential rotation, be equipped with circumference clearance (13) between linkage piece (12) and ejector pad (11).

2. A dual purpose valve as defined in claim 1, wherein: the pushing block (11) and the linkage block (12) are arc-shaped, and the inner sides of the pushing block (11) and the linkage block (12) are attached to the outer side of the driving shaft (10).

3. A dual purpose valve as claimed in claim 1 or 2, wherein: the pushing block (11) is fixed or welded on the driving shaft (10) through a pin shaft, and the linkage block (12) is welded on the butterfly plate (2).

4. A dual purpose valve as defined in 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. A dual purpose valve as defined in 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. A dual purpose valve as defined in 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. A dual purpose valve as defined in claim 1, wherein: be equipped with symmetry on butterfly plate (2) and be provided with first installation cover (18) and second installation cover (19), first installation cover (18) and second installation cover (19) are overlapped respectively and are established the periphery of drive shaft (10) and valve shaft (9), first installation cover (18) are connected with valve shaft (9) key, second installation cover (19) are connected through the fastener linkage with valve shaft (9).

8. A dual purpose valve as defined in claim 1, wherein: the sealing device comprises a driving shaft (10), 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 driving shaft (10), 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 shaft (9), 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 shaft (9) is further arranged on the supporting sleeve (29).

9. A dual purpose valve as defined in claim 8, wherein: the novel valve further comprises an upper dust cover (33) and a lower dust cover (34) which are respectively sleeved on the peripheries of the driving shaft (10) and the valve shaft (9), the upper dust cover (33) is clamped between the upper shaft sleeve (26) and the first mounting sleeve (18), and the lower dust cover (34) is clamped between the lower shaft sleeve (30) and the second mounting sleeve (19).