CN217422217U

CN217422217U - Butterfly check valve

Info

Publication number: CN217422217U
Application number: CN202221366625.6U
Authority: CN
Inventors: 陈庚; 胡拥军; 胡东海; 金流春; 黄晓荣
Original assignee: ZHEJIANG HANWEI VALVE MANUFACTURING CO LTD
Current assignee: ZHEJIANG HANWEI VALVE MANUFACTURING CO LTD
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-09-13
Anticipated expiration: 2032-06-02

Abstract

The utility model relates to the technical field of check valves, in particular to a butterfly check valve, which comprises a valve body, a main shaft is fixedly connected in the inner cavity of the valve body, torsion springs are sleeved at the positions, close to the top and the bottom, of the outer side of the main shaft, one ends of the two torsion springs are fixedly connected with the outer wall of the main shaft, the other ends of the two torsion springs are respectively attached with butterfly plates, the two butterfly plates are positioned at the rear side of the main shaft, the front sides of the two butterfly plates are movably connected with a cylinder, one sides, far away from the two torsion springs, of the two torsion springs are respectively provided with a sleeve, the butterfly plates can be directly disassembled and replaced after being washed by a medium for a long time through the arrangement of the butterfly plates and the matching use among a series of parts, such as the butterfly plates, connecting blocks, L-shaped blocks and the like, when the butterfly plates are damaged, the butterfly plates can be directly disassembled and replaced, the integral replacement of the butterfly check valve is not needed, resources are saved, and the sealing gaskets are arranged, the sealing performance in the valve body is improved, and the subsequent use effect is good.

Description

Butterfly check valve

Technical Field

The utility model relates to a check valve specifically is a butterfly check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode divide into over-and-under type and swing formula, and the kind of check valve has a lot, has butterfly check valve wherein, and current butterfly check valve is in the use, because its integration sets up for its inside butterfly board receives to erode for a long time when damaging, needs to dismantle the whole change operation of changing of butterfly check valve, and this resource-wasting undoubtedly, so the butterfly check valve that proposes here solves prior art not enough.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a butterfly check valve.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a butterfly check valve, includes the valve body, valve body inner chamber fixedly connected with main shaft, the main shaft outside is close to top and bottom department and all overlaps and is equipped with torque spring, two torque spring one end all with main shaft outer wall fixed connection, and two the torque spring other end is laminated respectively has the butterfly plate, two the butterfly plate all is located the main shaft rear side, and two the equal swing joint in butterfly plate front side has the drum, two one side is kept away from mutually to torque spring all is equipped with the sleeve, sleeve swing joint is in the main shaft outside, just sleeve one side fixedly connected with connecting block, drum front side through connection piece to with connecting block swing joint, just be equipped with latch mechanism between drum and the connecting block.

As a preferred technical scheme of the utility model, latch mechanism includes two column casing, two the column casing respectively with drum outside fixed connection, and two equal fixedly connected with second spring in column casing inner wall one side, second spring one end fixedly connected with L shape piece, two side channels, two have been seted up to the connecting block rear side the draw-in groove has all been seted up to the relative one side of side channel inner wall, one side that the second spring was kept away from to the L shape piece extends to the side channel inner chamber, and two the equal fixedly connected with fixture block in the relative one side of L shape piece, the fixture block is pegged graft at the draw-in groove inner chamber.

As a preferred technical scheme of the utility model, the first spring of drum inner wall one side fixedly connected with, first spring rear end fixedly connected with connecting rod, connecting rod rear end and adjacent butterfly plate fixed connection.

As a preferred technical scheme of the utility model, two the equal fixedly connected with in the butterfly plate outside is sealed fills up, sealed outside and the laminating of valve body inner wall of filling up.

As a preferred technical scheme of the utility model, the ring channel has been seted up to the sleeve inner wall, the main shaft left and right sides is close to the equal fixedly connected with movable block of top and bottom department, adjacent two the equal swing joint of movable block is at same ring channel inner chamber.

As an optimized technical scheme of the utility model, the cross section of connecting block is L shape setting.

As an optimal technical scheme of the utility model, the fixture block is the phase-match setting with the draw-in groove.

The embodiment of the utility model provides a butterfly check valve possesses following beneficial effect:

1. through being provided with the butterfly plate, using through the cooperation between a series of parts such as butterfly plate, connecting block and L-shaped piece for the butterfly plate is receiving the medium for a long time and erodees the back, when appearing damaging, can directly dismantle the change operation to the inside butterfly plate of valve body, need not to the whole change of butterfly check valve, has saved the resource, through the setting of sealed pad, has improved the inside sealing performance of valve body, makes follow-up result of use good.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of the front view structure of the present invention;

FIG. 3 is a side view of a butterfly plate of the present invention;

FIG. 4 is an enlarged view of the point A of FIG. 2 according to the present invention;

FIG. 5 is an enlarged view of the point B in FIG. 3 according to the present invention;

fig. 6 is an enlarged view of the point C in fig. 5 according to the present invention.

In the figure: 1. a valve body; 2. a main shaft; 3. a torsion spring; 4. a butterfly plate; 5. connecting blocks; 6. a sleeve; 7. an annular groove; 8. a movable block; 9. a cylinder; 10. a first spring; 11. a connecting rod; 12. a column casing; 13. a second spring; 14. an L-shaped block; 15. a side groove; 16. a clamping block; 17. a card slot; 18. and a gasket.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-6, a butterfly check valve, including valve body 1, 1 inner chamber fixedly connected with main shaft 2 of valve body, the top and bottom department of being close to in the main shaft 2 outside all overlap and are equipped with

torque spring

3, 3 one ends of two torque springs all with 2 outer wall fixed connection of main shaft, and two 3 other ends of torque spring have laminated butterfly plate 4 respectively, two butterfly plates 4 all are located 2 rear sides of main shaft, and two 4 front sides of butterfly plate all swing joint have a drum 9, two torque spring 3 keep away from one side mutually and all are equipped with sleeve 6, sleeve 6 swing joint is in the main shaft 2 outside, and 6 one side fixedly connected with connecting block 5 of sleeve, the cross section of connecting block 5 is the setting of L shape, drum 9 front side through connection block 5, and with connecting block 5 swing joint, and be equipped with latch mechanism between drum 9 and connecting block 5.

The clamping mechanism comprises two column barrels 12, the two column barrels 12 are respectively and fixedly connected with the outer side of the cylinder 9, a second spring 13 is fixedly connected to one side of the inner wall of each of the two column barrels 12, an L-shaped block 14 is fixedly connected to one end of each second spring 13, two side grooves 15 are formed in the rear side of the connecting block 5, clamping grooves 17 are formed in opposite sides of the inner walls of the two side grooves 15, one sides, far away from the second springs 13, of the L-shaped blocks 14 extend to the inner cavities of the side grooves 15, clamping blocks 16 are fixedly connected to opposite sides of the two L-shaped blocks 14, the clamping blocks 16 are inserted into the inner cavities of the clamping grooves 17, and the clamping blocks 16 are matched with the clamping grooves 17;

in this embodiment, the butterfly plate 4 is connected with the connecting block 5 through the setting, and the butterfly plate 4 is convenient to detach and replace subsequently.

Wherein, one side of the inner wall of the cylinder 9 is fixedly connected with a first spring 10, the rear end of the first spring 10 is fixedly connected with a connecting rod 11, and the rear end of the connecting rod 11 is fixedly connected with the adjacent butterfly plate 4;

in the present embodiment, the fixation between the butterfly plate 4 and the connecting block 5 is facilitated to be released by this arrangement.

Wherein, the outer sides of the two butterfly plates 4 are fixedly connected with sealing gaskets 18, and the outer sides of the sealing gaskets 18 are jointed with the inner wall of the valve body 1;

in the present embodiment, the sealing performance inside the valve body 1 is improved by this arrangement.

Wherein, the inner wall of the sleeve 6 is provided with an annular groove 7, the positions of the left side and the right side of the main shaft 2, which are close to the top and the bottom, are fixedly connected with movable blocks 8, and two adjacent movable blocks 8 are movably connected with the inner cavity of the same annular groove 7;

in this embodiment, the sleeve 6 can be connected better by this arrangement.

The working principle is as follows: when the utility model is used, two sides of the valve body 1 can be connected with external equipment, when fluid medium needs to circulate, two butterfly plates 4 are pushed to move, so that the butterfly plates 4 drive the sealing gasket 18 to move, and simultaneously drive the connecting rod 11 to move, the connecting rod 11 drives the connecting block 5 to move through the cylinder 9, the torsion spring 3 is compressed through the movement of the butterfly plates 4, at the moment, the valve body 1 internally circulates, the fluid medium can normally circulate, but the butterfly plates 4 are easy to damage in the subsequent use process due to the long-time scouring of the medium on the butterfly plates 4, at the moment, the valve body 1 can be taken down, two L-shaped blocks 14 are unfolded through a tool, the L-shaped blocks 14 drive the clamping block 16 to draw out of the clamping groove 17 and simultaneously stretch the second spring 13, then the cylinder 9 is pressed, so that the cylinder 9 drives the cylinder 12 to move when the connecting rod 11 compresses the first spring 10, the cylinder 12 drives the L-shaped blocks 14 to move, the L-shaped block 14 drives the clamping block 16 to be pulled out of the side groove 15, the butterfly plate 4 is disassembled at the moment, the operations are repeated to install a new butterfly plate 4, and the phenomenon that the whole butterfly plate is replaced for many times and resources are wasted is avoided.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A butterfly check valve comprises a valve body (1) and is characterized in that a main shaft (2) is fixedly connected to an inner cavity of the valve body (1), torsion springs (3) are sleeved at positions, close to the top and the bottom, of the outer side of the main shaft (2), one ends of the two torsion springs (3) are fixedly connected with the outer wall of the main shaft (2), butterfly plates (4) are respectively attached to the other ends of the two torsion springs (3), the two butterfly plates (4) are located on the rear side of the main shaft (2), cylinders (9) are movably connected to the front sides of the two butterfly plates (4), sleeves (6) are arranged on the sides, far away from the two torsion springs (3), the sleeves (6) are movably connected to the outer side of the main shaft (2), connecting blocks (5) are fixedly connected to one side of the sleeves (6), the front sides of the cylinders (9) penetrate through the connecting blocks (5) and are movably connected with the connecting blocks (5), and a clamping mechanism is arranged between the cylinder (9) and the connecting block (5).

2. The butterfly check valve according to claim 1, wherein the clamping mechanism includes two cylinders (12), the two cylinders (12) are respectively and fixedly connected with the outer side of the cylinder (9), a second spring (13) is fixedly connected to one side of the inner wall of each of the two cylinders (12), an L-shaped block (14) is fixedly connected to one end of each of the second springs (13), two side grooves (15) are formed in the rear side of the connecting block (5), clamping grooves (17) are formed in the opposite sides of the inner walls of the two side grooves (15), one side of each of the L-shaped blocks (14) away from the second spring (13) extends to the inner cavity of each of the side grooves (15), a clamping block (16) is fixedly connected to the opposite side of each of the L-shaped blocks (14), and the clamping block (16) is inserted into the inner cavity of each of the clamping grooves (17).

3. A butterfly check valve according to claim 1, characterized in that a first spring (10) is fixedly connected to one side of the inner wall of the cylinder (9), a connecting rod (11) is fixedly connected to the rear end of the first spring (10), and the rear end of the connecting rod (11) is fixedly connected to the adjacent butterfly plate (4).

4. A butterfly check valve according to claim 1, characterized in that a sealing gasket (18) is fixedly connected to the outer side of each of the two butterfly plates (4), and the outer side of the sealing gasket (18) is attached to the inner wall of the valve body (1).

5. A butterfly check valve according to claim 1, characterized in that the sleeve (6) has an annular groove (7) formed in an inner wall thereof, movable blocks (8) are fixedly connected to left and right sides of the main shaft (2) near the top and bottom thereof, and two adjacent movable blocks (8) are movably connected to an inner cavity of the same annular groove (7).

6. A butterfly check valve according to claim 1, characterized in that the cross section of the connecting piece (5) is L-shaped.

7. A butterfly check valve according to claim 2, characterized in that the latching portion (16) and the latching recess (17) are arranged to match each other.