CN217977412U

CN217977412U - Wear-resistant sealing butterfly valve

Info

Publication number: CN217977412U
Application number: CN202221786578.0U
Authority: CN
Inventors: 张其光
Original assignee: Jugong Valve Group Co ltd
Current assignee: Jugong Valve Group Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-12-06
Anticipated expiration: 2032-07-12

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a wear-resistant sealing butterfly valve, which comprises a shell and flanges arranged at two sides of the shell, wherein the inner wall of the shell is fixedly connected with a supporting pad, the middle thick edge of the supporting pad is thin, the inner wall of the supporting pad is fixedly connected with a sealing pad, a disc plate with a circumference outer wall tightly attached with the sealing pad is arranged in the shell, a driving shaft penetrating out from the top of the shell is integrally formed at the center of the disc plate, and a limiting component for limiting the rotation of the driving shaft is arranged at the top of the shell outside the driving shaft; the utility model has the advantages that the middle of the shell is provided with the supporting pad with thick middle and thin edge, and the supporting pad supports the middle part of the sealing pad, so that the butterfly plate is more tightly attached to the inner wall of the shell, and the sealing performance of the whole butterfly valve is improved; the spacing subassembly that is used for restricting the drive shaft pivoted that sets up at the shell top simultaneously convenient operation when using, and can rotate the angle to the drive shaft at many and carry on spacingly, the use and the control of this butterfly valve of being convenient for.

Description

Wear-resistant sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a wear-resisting sealed butterfly valve.

Background

The butterfly valve is a valve which can be used for on-off control of low-pressure pipeline media, is a disc-shaped closing member and rotates around a valve shaft to achieve opening and closing, can be used for controlling flow of various types of fluids such as air, water and the like, and mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

The application number is 20192125494.2 patent and discloses a wear-resisting sealed butterfly valve, which comprises an outer shell, the temple of shell is provided with the sealing washer, the inside of sealing washer is provided with the butterfly plate, the seal cover has been cup jointed on the outer wall of butterfly plate, and adopts interference fit between seal cover and the sealing washer, the top welding of shell has linking bridge, the top welding of linking bridge has the mount.

Although the technical scheme is that the sealing ring and the sealing sleeve are arranged and both made of polytetrafluoroethylene materials, the sealing ring and the sealing sleeve not only have good sealing performance, but also have good wear-resisting property, and the sealing performance and the wear resistance of the butterfly valve can be simultaneously improved by adopting the connection between the sealing sleeve and the sealing ring; but this technical scheme is when using, and the inseparable degree of its dish board and the laminating of shell inner wall is relatively poor, and the process of adjusting the dish board pivoted simultaneously is comparatively complicated. In view of this, we propose a wear-resistant sealed butterfly valve.

SUMMERY OF THE UTILITY MODEL

In order to make up for the above insufficiency, the utility model provides a wear-resisting sealed butterfly valve.

The technical scheme of the utility model is that:

a wear-resistant sealing butterfly valve comprises a shell and flanges arranged on two sides of the shell, wherein a supporting pad is fixedly connected to the inner wall of the shell, the middle of the supporting pad is thick, the edge of the supporting pad is thin, a sealing pad is fixedly connected to the inner wall of the supporting pad, a disc plate with a circumferential outer wall tightly attached to the sealing pad is arranged in the shell, a driving shaft penetrating out of the top of the shell is integrally formed in the center of the disc plate, a limiting assembly for limiting the driving shaft to rotate is arranged on the top of the shell and positioned on the outer side of the driving shaft, and a handle is fixedly connected to the top of the driving shaft; the limiting assembly comprises a fixing block fixedly connected with the shell, a limiting shaft for limiting the rotation of the driving shaft is inserted into the fixing block, and a limiting plate for limiting the vertical movement of the limiting shaft is fixed at the top of the fixing block through a limiting bolt with a pull ring.

As a preferred technical scheme, the driving shaft is rotatably connected with the shell, a baffle is integrally formed on the circumferential outer wall of the driving shaft close to the top, and at least one limiting block is integrally formed below the baffle.

As an optimized technical scheme, a limiting groove in sliding connection with the limiting block is formed in the inner wall of the limiting shaft, a plurality of adjacent inner limiting strips are integrally formed on the outer wall of the circumference of the limiting shaft, and a convex ring is integrally formed at the top of the limiting shaft.

As an optimized technical scheme, a plurality of outer limiting strips which are adjacent and matched with the inner limiting strips in an inserting mode are integrally formed on the inner wall of the fixing block, and two fixing holes which are in threaded connection with the limiting bolts with the pull rings are symmetrically formed in the top of the fixing block.

As a preferred technical scheme, the bottom of the limiting plate is provided with an annular groove which is rotationally connected with the convex ring.

As a preferable technical scheme, the limiting bolt with the pull ring is rotatably connected with the limiting plate.

As a preferable technical scheme, an extrusion gasket is fixed on the circumferential outer wall of the disc plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a through set up the supporting pad that the middle is thick and the edge is thin inside the shell, support the middle of sealed pad through the supporting pad, the protruding part of sealed pad can produce the extrusion with the dish board circumference outer wall after the dish board is closed, and then can make the dish board and the laminating of shell inner wall inseparabler, can improve the sealing performance of whole butterfly valve effectively; the spacing subassembly that is used for restricting the drive shaft pivoted that sets up at the shell top simultaneously convenient operation when using, and can carry on spacingly to the drive shaft at many rotation angles, the use and the control of this butterfly valve of being convenient for.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of fig. 1 with a flange removed according to the present invention;

fig. 3 is a schematic structural view of the present invention shown in fig. 2 without the outer shell, the support pad and the sealing pad;

fig. 4 is a schematic structural view of the middle limiting assembly with the fixed block removed;

fig. 5 is a bottom view of fig. 4 according to the present invention;

fig. 6 is a schematic structural view of the middle fixing block of the present invention;

fig. 7 is a schematic view of the internal structure of the middle position-limiting assembly of the present invention;

fig. 8 is a schematic structural view of the present invention in fig. 3 after the limiting component is removed.

Fig. 9 is a cross sectional slope view of the middle support pad and the sealing pad of the present invention.

The meaning of the individual reference symbols in the figures is:

1. a housing; 10. a support pad; 11. a gasket; 12. a plate; 120. extruding the gasket; 13. a drive shaft; 130. a baffle plate; 131. a limiting block; 2. a flange; 3. a limiting component; 30. a fixed block; 300. an outer limit strip; 301. a fixing hole; 31. a limiting plate; 310. an annular groove; 32. a limit bolt with a pull ring; 33. a limiting shaft; 330. a limiting groove; 331. an inner limiting strip; 34. a convex ring; 4. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-9, the present invention provides a technical solution:

example 1

A wear-resistant sealing butterfly valve comprises a shell 1 and flanges 2 arranged on two sides of the shell 1, wherein a supporting pad 10 is fixedly connected to the inner wall of the shell 1, the middle of the supporting pad 10 is thick, the edge of the supporting pad 10 is thin, a sealing pad 11 is fixedly connected to the inner wall of the supporting pad 10, a disc plate 12 with the circumference outer wall tightly attached to the sealing pad 11 is arranged in the shell 1, a driving shaft 13 penetrating out of the top of the shell 1 is integrally formed in the center of the disc plate 12, a limiting assembly 3 for limiting the driving shaft 13 to rotate is arranged on the top of the shell 1 and positioned on the outer side of the driving shaft 13, and a handle 4 is fixedly connected to the top of the driving shaft 13; the limiting component 3 comprises a fixing block 30 fixedly connected with the shell 1, a limiting shaft 33 for limiting the rotation of the driving shaft 13 is inserted in the fixing block 30, and a limiting plate 31 for limiting the up-and-down movement of the limiting shaft 33 is fixed at the top of the fixing block 30 through a limiting bolt 32 with a pull ring. By arranging the supporting pad 10 with thick middle and thin edge inside the shell 1 and supporting the middle of the sealing pad 11 through the supporting pad 10, the convex part of the sealing pad 11 can be extruded with the outer wall of the circumference of the disc 12 after the disc 12 is closed, so that the disc 12 can be attached to the inner wall of the shell 1 more tightly, and the sealing performance of the whole butterfly valve can be effectively improved; the setting is used for restricting the spacing subassembly 3 of 13 pivoted of drive shaft at shell 1 top simultaneously convenient operation when using, and can carry on spacingly to drive shaft 13 at many rotation angles, the use and the control of this butterfly valve of being convenient for.

Preferably, the driving shaft 13 is rotatably connected to the housing 1, a baffle 130 is integrally formed on the outer circumferential wall of the driving shaft 13 near the top, and at least one stopper 131 is integrally formed below the baffle 130. The baffle 130 is arranged to prevent the limiting groove 330 in the limiting shaft 33 from being separated from the limiting block 131 when the limiting shaft 33 is moved upwards.

Preferably, the inner wall of the limiting shaft 33 is provided with a limiting groove 330 slidably connected with the limiting block 131, the outer circumferential wall of the limiting shaft 33 is integrally formed with a plurality of adjacent inner limiting strips 331, and the top of the limiting shaft 33 is integrally formed with a convex ring 34. The rotation of the driving shaft 13 can be restricted by the engagement between the stopper groove 330 and the stopper 131.

Preferably, a plurality of adjacent outer limiting strips 300 which are matched with the inner limiting strips 331 in an inserting manner are integrally formed on the inner wall of the fixing block 30, and two fixing holes 301 which are in threaded connection with the limiting bolts 32 with the pull rings are symmetrically formed in the top of the fixing block 30. The rotation of the limiting shaft 33 can be limited by the insertion fit between the inner limiting strip 331 and the outer limiting strip 300, and further the rotation of the driving shaft 13 is limited.

Preferably, the bottom of the position-limiting plate 31 is provided with an annular groove 310 rotatably connected with the protruding ring 34. Through being connected between bulge loop 34 and the annular groove 310, can lift up spacing axle 33 together when upwards pulling limiting plate 31, and then can break away from with outer spacing 331 in can making, when the two breaks away from, can rotate drive shaft 13, can adjust this butterfly valve opening size through adjusting dish board 12.

Preferably, the limiting bolt 32 with a pull ring is rotatably connected with the limiting plate 31. The limiting bolt 32 with the pull ring is upwards driven by upwards pulling the pull ring, and then the limiting plate 31 is upwards pulled.

Example 2

The present embodiment provides the following technical solution on the basis of embodiment 1, and a pressing washer 120 is fixed on the circumferential outer wall of the disc 12. The friction loss between the sealing gaskets 11 can be reduced by the arranged extrusion gaskets 120, and the sealing performance of the whole butterfly valve is prevented from being influenced by the thinning of the sealing gaskets 11 when the butterfly plate 12 is opened and closed for a long time.

It should be noted that the supporting pad of the present invention is made of hard rubber, and the sealing pad 11 and the pressing washer 120 are made of soft rubber.

When the wear-resistant sealing butterfly valve is used, when the size of an opening of the butterfly valve is adjusted, firstly, the limiting bolt 32 with the pull ring is unscrewed from the fixing block 30, then the pull ring is pulled upwards, the limiting bolt 32 with the pull ring drives the limiting plate 31 to move upwards, then the limiting shaft 33 is driven to move upwards through the convex ring 34 and the annular groove 310, the inner limiting strip 331 is separated from the outer limiting strip 300, when the inner limiting strip 331 and the outer limiting strip 300 are separated, the driving shaft 13 can be rotated through the handle 4, the disc plate 12 is driven to rotate through the driving shaft 13, when the disc plate rotates to a specified position, the limiting shaft 33 is moved downwards, the inner limiting strip 331 is in splicing fit with the outer limiting strip 300, and then the limiting bolt 32 with the pull ring is screwed on the fixing hole 301; simultaneously through the thin supporting pad 10 in the middle of setting up in shell 1 inside, support through supporting pad 10 with the middle department that fills up pad 11, the sealed 11 bellied parts that fill up can produce the extrusion with dish 12 circumference outer wall after dish 12 closes, and then can make the inseparabler of dish 12 and the laminating of 1 inner wall of shell, can be in order to improve the sealing performance of whole butterfly valve effectively.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only the preferred embodiments of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a wear-resisting sealed butterfly valve, includes shell (1) and install in flange (2) of shell (1) both sides, its characterized in that: the inner wall of the shell (1) is fixedly connected with a supporting pad (10), the middle of the supporting pad (10) is thick and thin, a sealing pad (11) is fixedly connected to the inner wall of the supporting pad (10), a disc plate (12) with the circumference outer wall tightly attached to the sealing pad (11) is installed in the shell (1), a driving shaft (13) penetrating out of the top of the shell (1) is integrally formed in the center of the disc plate (12), a limiting component (3) for limiting the driving shaft (13) to rotate is installed on the top of the shell (1) and located on the outer side of the driving shaft (13), and a handle (4) is fixedly connected to the top of the driving shaft (13); spacing subassembly (3) include with shell (1) fixed connection's fixed block (30), it has the restriction to peg graft in fixed block (30) drive shaft (13) pivoted spacing axle (33), fixed block (30) top is fixed with the restriction through spacing bolt (32) that have the pull ring spacing axle (33) up-and-down motion's limiting plate (31).

2. A wear-resistant sealed butterfly valve as claimed in claim 1, wherein: the driving shaft (13) is rotatably connected with the shell (1), a baffle (130) is integrally formed on the circumferential outer wall of the driving shaft (13) close to the top, and at least one limiting block (131) is integrally formed below the baffle (130).

3. A wear-resistant sealed butterfly valve as claimed in claim 2, wherein: the limiting shaft is characterized in that a limiting groove (330) connected with the limiting block (131) in a sliding mode is formed in the inner wall of the limiting shaft (33), a plurality of adjacent inner limiting strips (331) are integrally formed in the circumferential outer wall of the limiting shaft (33), and a convex ring (34) is integrally formed in the top of the limiting shaft (33).

4. A wear-resistant sealed butterfly valve as claimed in claim 3, wherein: a plurality of adjacent outer limiting strips (300) matched with the inner limiting strips (331) in an inserting mode are integrally formed on the inner wall of the fixing block (30), and two fixing holes (301) in threaded connection with the limiting bolts (32) with the pull rings are symmetrically formed in the top of the fixing block (30).

5. The wear-resistant sealed butterfly valve of claim 4, wherein: the bottom of the limiting plate (31) is provided with an annular groove (310) which is rotationally connected with the convex ring (34).

6. The wear-resistant sealed butterfly valve of claim 5, wherein: the limiting bolt (32) with the pull ring is rotatably connected with the limiting plate (31).

7. A wear-resistant sealed butterfly valve as claimed in claim 1, wherein: and an extrusion gasket (120) is fixed on the outer wall of the circumference of the disc plate (12).