CN114352740A

CN114352740A - Novel butterfly valve

Info

Publication number: CN114352740A
Application number: CN202210073740.2A
Authority: CN
Inventors: 陈牡丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-04-15

Abstract

The invention provides a novel butterfly valve, which comprises a valve body, wherein a valve seat is arranged on the valve body, a valve rod is arranged in the valve seat, a butterfly plate is arranged on the valve rod, and a turbine speed reducer is in transmission connection with the valve rod; and a sealing seat for matching the first sealing element and the second sealing element is arranged in the valve body.

Description

Novel butterfly valve

Technical Field

The invention relates to the technical field of valves, in particular to a novel butterfly valve.

Background

Butterfly valves are favored for their advantages of fast opening and closing, self-sealing tendency, and light weight. The butterfly valve is a valve which is opened and closed by rotating a valve rod and simultaneously driving a butterfly plate to rotate. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, the disc-shaped butterfly plate mainly rotates to control flow, and when the butterfly plate reaches the bottom, the valve is in a full-open state. Meanwhile, the angle of the butterfly plate can be changed to adjust the medium flow, and the butterfly plate is generally arranged in the diameter direction of a pipeline. However, the friction force of the sealing surface makes the valve have a large opening and closing torque, and particularly the water pressure of a pipeline on one side needs to be overcome, so that the sealing surface is easily abraded, and the sealing performance is reduced.

Disclosure of Invention

The invention aims to solve the technical problem of how to keep better sealing performance of a butterfly valve, and provides a novel butterfly valve.

The technical scheme of the invention is that the novel butterfly valve comprises a valve body, wherein a valve seat is arranged on the valve body, a valve rod is arranged in the valve seat, a butterfly plate is arranged on the valve rod and is in transmission connection with a turbine speed reducer, a ring-shaped first sealing element and a ring-shaped second sealing element which are arranged at intervals are arranged on the periphery of the butterfly plate, a tubular connecting element for connecting the first sealing element and the second sealing element is arranged between the first sealing element and the second sealing element, the valve rod is hollow, a three-way structure is arranged at the end part connected with the butterfly plate, a tubular liquid injection element connected with the connecting element through the three-way structure is arranged in the center of the valve rod, and the valve rod and the liquid injection element extend upwards to the turbine speed reducer and are connected with a hydraulic adjusting device of which a piston rod extends into the liquid injection element; and a sealing seat for matching the first sealing element and the second sealing element is arranged in the valve body.

In one embodiment, the first sealing element and the second sealing element are flexible elements and the sealing seat is a rigid element.

In one embodiment, the connecting element is a flexible element.

In one embodiment, the connecting element is provided on both sides with a filling element which connects the first sealing element and the second sealing element, respectively.

As an implementation mode, a semicircular first turning plate and a semicircular second turning plate which are hinged to each other are further arranged in the valve body, a shaft sleeve of the first turning plate is fixedly connected with a hinged shaft, a shaft sleeve of the second turning plate is rotatably connected with the hinged shaft, an annular first linkage element is arranged at the end part of the hinged shaft, a downward first clamping element is arranged on the first linkage element, an annular second linkage element is arranged at the end part of a shaft sleeve of the second turning plate, an upward second clamping element is arranged on the second linkage element, the end part of the hinged shaft and the end part of the shaft sleeve of the second turning plate both penetrate through a movable cavity arranged at the top of the valve body, a U-shaped linkage plate with a sliding direction perpendicular to the penetrating direction of the hinged shaft is connected in the movable cavity in a sliding manner, and the first linkage element and the second linkage element are both positioned in the linkage plate, a first clamping groove for the first clamping element to slide and a second clamping groove for the second clamping element to slide are respectively arranged on the two inner sides of the linkage plate, a switch element positioned on the sliding path of the linkage plate is also arranged in the movable cavity, and a handheld element positioned on one side of the movable cavity and used for driving the linkage plate to slide is connected to the valve body in a sliding manner; the valve body is also internally provided with a third sealing element used for matching the first turning plate and the second turning plate, and the valve body is also externally provided with a water pumping device which responds to the switch element and a water pumping pipe is positioned among the first turning plate, the second turning plate and the butterfly plate.

As an implementation manner, a first partition plate and a second partition plate are respectively arranged on two inner sides of the linkage plate, the first clamping groove is located on the first partition plate, the second clamping groove is located on the second partition plate, the hinge shaft penetrates through the first partition plate and the second partition plate, a shaft sleeve of the second turning plate is close to the first partition plate and the second partition plate, the first linkage element contacts with the tops of the first partition plate and the second partition plate, and the second linkage element contacts with the bottoms of the first partition plate and the second partition plate.

In one embodiment, the first and second snap-in elements are each cylindrical.

As an implementation mode, sliding grooves are formed in two sides of the movable cavity, and the linkage plate is in sliding connection with the sliding grooves.

As an implementation mode, a sliding rail located on one side of the movable cavity is arranged on the valve body, connecting pins connected with the sliding rail are arranged at two ends of the handheld element, and the connecting pins at one end are connected with the linkage plate through a synchronizing rod.

In one embodiment, a mounting plate is provided at one end of the movable chamber, and the switching element is provided on the mounting plate.

Compared with the prior art, the invention has the advantages that,

different from the traditional butterfly valve, the flexible sealing ring of the novel butterfly valve is arranged on the periphery of the butterfly plate, specifically a first sealing element and a second sealing element which are arranged at intervals, and then a connecting element with a certain thickness is connected between the first sealing element and the second sealing element, and liquid can be injected into the connecting element. In order to reduce the friction to which the first sealing element and the second sealing element are subjected during opening and closing, the hydraulic pressure in the connecting element is reduced by the hydraulic pressure regulating device so that there is a certain collapse, and then due to the connecting relationship the first sealing element and the second sealing element are brought inwards, i.e. closer to each other. Therefore, when the butterfly plate is opened and closed to rotate, the resistance borne by the first sealing element and the second sealing element is reduced, and the friction loss is also reduced. And after the butterfly valve is closed by rotating the butterfly plate, the butterfly plate is pressurized again to ensure that the connecting element is filled with liquid to expand the first sealing element and the second sealing element, and the first sealing element and the second sealing element are matched with a sealing seat arranged in the valve body for sealing. Therefore, when the butterfly plate is rotated, the novel butterfly valve can reduce abrasion by controlling the shape of the sealing ring to be changed to a certain degree, and can keep better sealing performance after being used for a long time.

Drawings

Fig. 1 is a schematic view of a first structure of a novel butterfly valve according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a butterfly plate and related components according to an embodiment of the present invention;

FIG. 3 is a second schematic structural diagram of the novel butterfly valve according to the embodiment of the invention;

FIG. 4 is a schematic diagram of a third structure of the novel butterfly valve according to the embodiment of the invention;

fig. 5 is a schematic structural diagram of the first flap and the second flap and related elements provided in the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a linkage board and related components according to an embodiment of the present invention.

In the figure: 1. a valve body; 2. a valve seat; 3. a valve stem; 4. a butterfly plate; 5. a turbine speed reduction device; 6. a first sealing element; 7. a second sealing element; 8. a connecting element; 9. a priming element; 10. a hydraulic pressure adjusting device; 11. a sealing seat; 12. a filler element; 13. a first flap; 14. a second flap; 15. hinging a shaft; 16. a first linkage member; 17. a first clamping element; 18. a second linkage element; 19. a second clamping element; 20. a movable cavity; 21. a linkage plate; 22. a first card slot; 23. a second card slot; 24. a switching element; 25. a hand-held element; 26. a third sealing element; 27. a water pumping device; 28. a first separator; 29. a second separator; 30. a chute; 31. a slide rail; 32. a connecting pin; 33. a synchronization lever; 34. and (7) mounting the plate.

Detailed Description

The foregoing and additional embodiments and advantages of the present invention are described more fully hereinafter with reference to the accompanying drawings. It is to be understood that the described embodiments are merely some, and not all, embodiments of the invention.

In one embodiment, as shown in fig. 1-2.

The novel butterfly valve provided by the embodiment comprises a valve body 1, wherein a valve seat 2 is arranged on the valve body 1, a valve rod 3 is arranged in the valve seat 2, a butterfly plate 4 is arranged on the valve rod 3 and is in transmission connection with a turbine speed reducer 5, a ring-shaped first sealing element 6 and a ring-shaped second sealing element 7 which are arranged at intervals are arranged on the periphery of the butterfly plate 4, a tubular connecting element 8 for connecting the first sealing element 6 and the second sealing element 7 is arranged between the first sealing element 6 and the second sealing element 7, the valve rod 3 is hollow and is provided with a three-way structure at the end part connected with the butterfly plate 4, a tubular liquid injection element 9 connected with the connecting element 8 through the three-way structure is arranged in the center of the valve rod 3, and the valve rod 3 and the liquid injection element 9 extend upwards to the turbine speed reducer 5 and are connected with a hydraulic adjusting device 10 of which a piston rod extends into the liquid injection element 9; a sealing seat 11 for matching the first sealing element 6 and the second sealing element 7 is arranged in the valve body 1.

In this embodiment, unlike the conventional butterfly valve (mostly a hard butterfly plate is fitted into a flexible sealing seat provided in the valve body), the flexible sealing ring of the new butterfly valve is provided at the periphery of the butterfly plate 4, specifically, the first sealing element 6 and the second sealing element 7 are provided at intervals, and then a connecting element 8 with a considerable thickness is connected between the first sealing element 6 and the second sealing element 7, and the connecting element 8 can be filled with liquid. In order to reduce the friction between the first sealing element 6 and the second sealing element 7 during opening and closing, the hydraulic pressure in the connecting element 8 is reduced by means of the hydraulic pressure regulating device 10 so that there is a certain collapse, and the first sealing element 6 and the second sealing element 7 are brought inwards, i.e. the first sealing element 6 and the second sealing element 7 are brought closer to each other, due to the connection. Thus, when the butterfly plate 4 is turned by opening and closing, the resistance to the first sealing element 6 and the second sealing element 7 is reduced, and the friction loss is also reduced. After the butterfly valve is closed by rotating the butterfly plate 4, the connecting element 8 is pressurized again to be filled with liquid, so that the first sealing element 6 and the second sealing element 7 are expanded and sealed by matching with a sealing seat 11 arranged in the valve body 1. In summary, the novel butterfly valve according to the present embodiment can reduce wear by controlling the shape of the seal ring to change to a certain degree when the butterfly plate 4 is rotated, and can maintain good sealing performance for a long period of time.

In one embodiment, as shown in FIG. 2.

The present embodiment provides a new butterfly valve, wherein the two sides of the connecting element 8 are provided with filling elements 12 respectively connected with the first sealing element 6 and the second sealing element 7.

In this embodiment, the first sealing element 6 and the second sealing element 7 are filled by means of a flexible filling element 12 such that they form a complete sealing surface, maintaining a shape close to that of a conventional sealing ring.

In one embodiment, as shown in fig. 3-5.

The novel butterfly valve provided by the embodiment is characterized in that a semicircular first turning plate 13 and a semicircular second turning plate 14 which are hinged with each other are further arranged in a valve body 1, a shaft sleeve of the first turning plate 13 is fixedly connected with a hinge shaft 15, a shaft sleeve of the second turning plate 14 is rotatably connected with the hinge shaft 15, an annular first linkage element 16 is arranged at the end part of the hinge shaft 15, a downward first clamping element 17 is arranged on the first linkage element 16, an annular second linkage element 18 is arranged at the end part of a shaft sleeve of the second turning plate 14, an upward second clamping element 19 is arranged on the second linkage element 18, the end part of the hinge shaft 15 and the end part of the shaft sleeve of the second turning plate 14 both penetrate through a movable cavity 20 arranged at the top of the valve body 1, a U-shaped linkage plate 21 with a sliding direction perpendicular to the penetrating direction of the hinge shaft 15 is slidably connected in the movable cavity 20, and the first linkage element 16 and the second linkage element 18 are both positioned in the linkage plate 21, a first clamping groove 22 for the first clamping element 17 to slide and a second clamping groove 23 for the second clamping element 19 to slide are respectively arranged at two inner sides of the linkage plate 21, a switch element 24 positioned on a sliding path of the linkage plate 21 is also arranged in the movable cavity 20, and a handheld element 25 positioned at one side of the movable cavity 20 and used for driving the linkage plate 21 to slide is connected on the valve body 1 in a sliding manner; a third sealing element 26 for matching the first flap 13 and the second flap 14 is further arranged in the valve body 1, and a water pumping device 27 which is responsive to the switching element 24 and is positioned between the first flap 13, the second flap 14 and the butterfly plate 4 is further arranged outside the valve body 1.

In this embodiment, this novel butterfly valve can be before opening and close, evacuates to the water of arranging in one section valve body 1 of butterfly plate 4 in front to open and close and need not overcome water pressure when rotating butterfly plate 4, reduce the valve and open and close the moment of torsion. The friction force of the sealing surface is further reduced, and the abrasion of the sealing ring is reduced. Specifically, when in use, the handheld element 25 is pulled along the sliding rail 31 to drive the linking plate 21 in the movable cavity 20 to slide to one side, as shown in fig. 5. During the sliding process, the linkage plate 21 drives the first linkage element 16 and the second linkage element 18 to rotate reversely, so as to drive the first flap 13 and the second flap 14 to perform butterfly turning, and the valve body 1 is blocked by matching with the third sealing element 26, as shown in fig. 3. After the first flap 13 and the second flap 14 block the valve body 1, a section of relatively closed space is formed among the first flap 13, the second flap 14 and the butterfly plate 4, and the linkage plate 21 drives the first flap 13 and the second flap 14 to be opened to a proper position so as to trigger the switch element 24 and start the water pumping device 27 to pump out water in the section of relatively closed space. The section of the butterfly valve does not need good sealing performance relative to a closed space, and a space without water or with little water is formed only before the rotary butterfly plate 4 is opened and closed. With the formation of such a space, the butterfly plate 4 is rotated again without overcoming the water pressure, and the opening and closing torque of the valve is also reduced.

In one embodiment, as shown in FIG. 6.

In the novel butterfly valve provided by the embodiment, the two inner sides of the linkage plate 21 are respectively provided with the first partition plate 28 and the second partition plate 29, the first clamping groove 22 is located on the first partition plate 28, the second clamping groove 23 is located on the second partition plate 29, the hinge shaft 15 passes through the first partition plate 28 and the second partition plate 29, the shaft sleeve of the second turning plate 14 is close to the first partition plate 28 and the second partition plate 29, the first linkage element 16 contacts the tops of the first partition plate 28 and the second partition plate 29, and the second linkage element 18 contacts the bottoms of the first partition plate 28 and the second partition plate 29.

In the present embodiment, the first interlocking member 16 and the second interlocking member 18 have a certain interval and are just matched with the first partition plate 28 and the second partition plate 29, so that the first interlocking member 16 contacts the top of the first partition plate 28 and the second partition plate 29, and the second interlocking member 18 contacts the bottom of the first partition plate 28 and the second partition plate 29. In addition, the first engaging element 17 is located in the first engaging groove 22, the second engaging element 19 is located in the second engaging groove 23, and during the process of sliding the linking plate 21, the first engaging groove 22 and the second engaging groove 23 are displaced to make the first linking element 16 and the second linking element 18 rotate respectively. During the rotation, the first catch element 17 and the second catch element 19 move in the first catch groove 22 and the second catch groove 23, respectively.

In one embodiment, as shown in FIG. 4.

In the novel butterfly valve provided by the embodiment, the sliding grooves 30 are arranged on two sides of the movable cavity 20, and the linkage plate 21 is slidably connected with the sliding grooves 30. In the present embodiment, the sliding grooves 30 are disposed on both sides of the movable chamber 20, so that the linking plate 21 can be slidably connected.

In one embodiment, as shown in FIG. 3.

In the novel butterfly valve provided by the present embodiment, the valve body 1 is provided with a sliding rail 31 located at one side of the movable cavity 20, the two ends of the handheld element 25 are provided with connecting pins 32 connected to the sliding rail 31, and the connecting pin 32 at one end is connected to the linkage plate 21 through the synchronization rod 33.

In the present embodiment, a sliding rail 31 is disposed on the valve body 1, so that the handheld element 25 can be slidably connected to the sliding rail 31 through a connecting pin 32, and the linkage plate 21 is driven by the connection between the synchronization rod 33 and the linkage plate 21.

In one embodiment, as shown in FIG. 4.

In the new butterfly valve provided by this embodiment, a mounting plate 34 is disposed at one end of the movable chamber 20, and the switch element 24 is disposed on the mounting plate 34. In the present embodiment, the switch element 24 mounting is provided by providing a mounting plate 34.

The above-described embodiments further explain the object, technical means, and advantageous effects of the present invention in detail. It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.

Claims

1. A novel butterfly valve comprises a valve body (1), wherein a valve seat (2) is arranged on the valve body (1), a valve rod (3) is arranged in the valve seat (2), a butterfly plate (4) is arranged on the valve rod (3) and is in transmission connection with a turbine speed reducer (5), the novel butterfly valve is characterized in that a ring-shaped first sealing element (6) and a ring-shaped second sealing element (7) which are arranged at intervals are arranged on the periphery of the butterfly plate (4), a tubular connecting element (8) for connecting the first sealing element (6) and the second sealing element (7) is arranged between the first sealing element (6) and the second sealing element (7), the valve rod (3) is hollow, a three-way structure is arranged at the end part connected with the butterfly plate (4), a tubular liquid injection element (9) connected with the connecting element (8) through the three-way structure is arranged at the center of the valve rod (3), the valve rod (3) and the liquid injection element (9) extend upwards to the turbine speed reduction device (5) and are connected with a hydraulic adjusting device (10) of which the piston rod extends into the liquid injection element (9);

and a sealing seat (11) for matching the first sealing element (6) and the second sealing element (7) is arranged in the valve body (1).

2. A new butterfly valve according to claim 1, characterised in that said first sealing element (6) and said second sealing element (7) are flexible elements and said sealing seat (11) is a rigid element.

3. A new butterfly valve according to claim 1, characterised in that said connection element (8) is a flexible element.

4. A new butterfly valve according to claim 1, characterised in that the connection element (8) is provided on both sides with a filling element (12) connecting the first sealing element (6) and the second sealing element (7), respectively.

5. The novel butterfly valve according to claim 1, characterized in that a semicircular first flap (13) and a semicircular second flap (14) are further provided in the valve body (1), the shaft sleeve of the first flap (13) is fixedly connected with a hinge shaft (15), the shaft sleeve of the second flap (14) is rotatably connected with the hinge shaft (15), the end of the hinge shaft (15) is provided with an annular first linking element (16), the first linking element (16) is provided with a downward first clamping element (17), the end of the shaft sleeve of the second flap (14) is provided with an annular second linking element (18), the second linking element (18) is provided with an upward second clamping element (19), the end of the hinge shaft (15) and the end of the shaft sleeve of the second flap (14) both penetrate into a movable cavity (20) provided at the top of the valve body (1), a U-shaped linkage plate (21) with a sliding direction perpendicular to the penetrating direction of the hinge shaft (15) is slidably connected in the movable cavity (20), the first linkage element (16) and the second linkage element (18) are both positioned in the linkage plate (21), a first clamping groove (22) for the first clamping element (17) to slide and a second clamping groove (23) for the second clamping element (19) to slide are respectively arranged on two inner sides of the linkage plate (21), a switch element (24) positioned on the sliding path of the linkage plate (21) is further arranged in the movable cavity (20), and a handheld element (25) positioned on one side of the movable cavity (20) and used for driving the linkage plate (21) to slide is slidably connected on the valve body (1); a third sealing element (26) used for matching the first turning plate (13) and the second turning plate (14) is further arranged in the valve body (1), and a water pumping device (27) which responds to the switch element (24) and is provided with a water pumping pipe between the first turning plate (13), the second turning plate (14) and the butterfly plate (4) is further arranged outside the valve body (1).

6. The novel butterfly valve according to claim 5, characterized in that a first partition (28) and a second partition (29) are respectively arranged on two inner sides of the linkage plate (21), the first locking groove (22) is located on the first partition (28), the second locking groove (23) is located on the second partition (29), the hinge shaft (15) passes through the first partition (28) and the second partition (29), the shaft sleeve of the second flap (14) is close to the first partition (28) and the second partition (29), the first linkage element (16) contacts the tops of the first partition (28) and the second partition (29), and the second linkage element (18) contacts the bottoms of the first partition (28) and the second partition (29).

7. The new butterfly valve according to claim 5, characterised in that said first snap-in element (17) and said second snap-in element (19) are both cylindrical.

8. The novel butterfly valve according to claim 5, characterized in that sliding grooves (30) are provided on both sides of the movable cavity (20), and the linkage plate (21) is slidably connected with the sliding grooves (30).

9. The new butterfly valve according to claim 5, characterized in that said valve body (1) is provided with a sliding rail (31) located at one side of said movable cavity (20), said hand-held element (25) is provided with connecting feet (32) connected to said sliding rail (31) at both ends, said connecting feet (32) at one end are connected to said linking plate (21) through a synchronization rod (33).

10. The new butterfly valve according to claim 5, characterized in that one end of said movable chamber (20) is provided with a mounting plate (34), said switching element (24) being provided on said mounting plate (34).