CN212055885U

CN212055885U - Soft sealing eccentric butterfly valve

Info

Publication number: CN212055885U
Application number: CN202020515461.3U
Authority: CN
Inventors: 彭文
Original assignee: Lampa Control Valve Jiangsu Co ltd
Current assignee: Lampa Control Valve Jiangsu Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-12-01
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses a soft sealing eccentric butterfly valve, which comprises a valve body, the welding of valve body top outer wall has the support column, the welding of support column top outer wall has the support frame, the welding of support frame top outer wall has the seal box, seal box one side outer wall rotates and is connected with the valve, the welding of valve one side outer wall has the master gear, master gear top outer wall meshing has driven gear, the outer wall welding of driven gear one side has the screw thread post, the outer wall meshing of screw thread post one side has sector gear, the outer wall welding of sector gear bottom has the rotation post, and rotates post outer wall sliding connection in disk seat top inner wall, it has the last spliced pole to rotate post top outer wall through the bolt fastening, it has the butterfly plate to. The utility model discloses a rubber sheath can reduce the friction between butterfly plate and the valve body inner wall, reduces rivers to the corruption of butterfly plate, has strengthened the leakproofness of valve body through the rubber packing pad.

Description

Soft sealing eccentric butterfly valve

Technical Field

The utility model relates to an eccentric butterfly valve technical field especially relates to soft sealing eccentric butterfly valve.

Background

In the prior art, a butterfly valve is an important device in a water supply and drainage pipeline system, and with the progress of industrial technology, higher requirements are put on the structure and the performance of the butterfly valve. At present, the butterfly valve is widely applied to the fields of water supply and drainage industries such as municipal administration, petroleum, chemical industry, light industry and the like, and the butterfly valve is various and comprises a soft seal butterfly valve sealed by rubber and a hard seal butterfly valve sealed by metal parts.

The existing two-eccentric soft seal butterfly valve structure is characterized in that the rotation center line of a valve and the center line of a sealing surface are eccentric, the rotation center of the valve deviates from the axial center line of a valve body, and a rubber seal ring of the butterfly valve with the structure has friction and extrusion in a large stroke, so that the butterfly valve is easy to strain and is not suitable for severe working conditions and occasions where the seal ring is not easy to replace. The existing three-eccentric center hard seal butterfly valve is difficult to realize complete sealing and bidirectional sealing because all sealing elements are metal pieces. And because the sealing structures of the two forms belong to pressure forced sealing, the operation torque is large when the valve is opened and closed.

Through retrieval, chinese patent application No. CN204533564U discloses a soft seal eccentric butterfly valve, which comprises a valve body, a butterfly flap, a valve seat, a valve rod and a manual device, wherein the valve body is arranged at the bottom, the valve seat is arranged on the valve body, the butterfly flap is arranged in the valve seat, the valve rod is connected with the butterfly flap, the manual device is connected on the valve rod to drive the valve rod to rotate and control to open and close, the valve seat is a conical elastic valve seat, the butterfly flap forms a primary eccentric by deviating from the central line of the sealing surface of the valve seat when being arranged, and forms a secondary eccentric by deviating from the central line of a pipeline. Compared with the prior art, the utility model has the advantages of reduce friction has reduced the operating torque, improves sealing performance.

The soft sealing eccentric butterfly valve in the patent has the following defects: the process of valve control butterfly plate opening and shutting does not carry out the slowing down of moment through gear engagement, can lead to opening and shutting the valve more difficult, and easily produces the friction between butterfly plate and the valve body inner wall.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the process that the valve control butterfly plate that exists among the prior art opens and shuts, do not carry out slowing down of moment through gear engagement, can lead to the valve that opens and shuts more difficult, and easily produces frictional shortcoming between butterfly plate and the valve body inner wall, and the soft sealed eccentric butterfly valve who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

soft eccentric butterfly valve of sealing, including the valve body, the welding of valve body top outer wall has the support column, the welding of support column top outer wall has the support frame, the welding of support frame top outer wall has the seal box, seal box one side outer wall rotates and is connected with the valve, the welding of valve one side outer wall has the driving gear, the meshing of driving gear top outer wall has driven gear, the welding of driven gear one side outer wall has the screw thread post.

As a further aspect of the present invention: the outer wall of one side of the threaded column is meshed with a sector gear, the outer wall of the bottom of the sector gear is welded with a rotating column, and the outer wall of the rotating column is connected to the inner wall of the top of the valve seat in a sliding mode.

As a further aspect of the present invention: an upper connecting column is fixed on the outer wall of the top of the rotating column through bolts, a butterfly plate is welded on the outer wall of one side of the upper connecting column, and a lower connecting column is welded on the outer wall of one side of the bottom of the butterfly plate.

As a further aspect of the present invention: the outer wall of the bottom of the valve body is fixed with a fixing seat through a bolt, and the inner wall of the fixing seat is rotatably connected with a rotating shaft.

As a further aspect of the present invention: the outer wall of the rotating shaft is fixed with a lower connecting column through a bolt, and the outer wall of one side of the lower connecting column is welded on the outer wall of one side of the butterfly plate.

As a further aspect of the present invention: the butterfly plate outer wall is provided with the rubber sheath, the ring flange has all been welded to the valve body both sides outer wall, the ring flange outer wall has the pipeline through the bolt fastening.

As a further aspect of the present invention: the outer wall welding of pipeline one side has the sealed tube, valve body inner wall sliding connection has rubber seal, and sealed tube outer wall sliding connection is in rubber seal top outer wall.

Compared with the prior art, the utility model discloses, possess following beneficial effect:

1. this soft sealing eccentric butterfly valve drives the driving gear through rotating the valve and rotates, and the driving gear drives driven gear and rotates, and driven gear can weaken the moment of driving gear, and driven gear drives the screw thread post and rotates.

2. According to the soft-sealing eccentric butterfly valve, friction between the butterfly plate and the inner wall of the valve body can be reduced through the rubber sheath, and corrosion of water flow to the butterfly plate is reduced.

3. According to the soft-sealing eccentric butterfly valve, the rubber sealing ring can be attached between the sealing pipe on the outer wall of the pipeline and the rubber sealing ring when the valve body and the pipeline are installed, and the sealing performance of the valve body is enhanced.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses simple structure, convenient operation.

Drawings

Fig. 1 is a schematic view of a soft sealing eccentric butterfly valve according to the present invention;

fig. 2 is a schematic bottom structure view of the soft sealing eccentric butterfly valve of the present invention;

FIG. 3 is a schematic view of the connection structure between the butterfly valve and the pipeline of the flexible sealing eccentric butterfly valve of the present invention;

fig. 4 is the schematic diagram of the transmission mechanism inside the seal box of the soft seal eccentric butterfly valve provided by the utility model.

In the figure: 1-valve body, 2-support column, 3-seal box, 4-valve, 5-flange, 6-rubber sheath, 7-fixing seat, 8-butterfly plate, 9-upper connecting column, 10-sealing tube, 11-support frame, 12-pipeline, 13-rubber sealing ring, 14-threaded column, 15-main gear, 16-driven gear, 17-sector gear, 18-rotating column, 19-rotating shaft and 20-lower connecting column.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 simplicity of description, and do not indicate or imply that the device or element being 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.

The soft-sealing eccentric butterfly valve comprises a valve body 1, wherein a support column 2 is welded on the outer wall of the top of the valve body 1, a support frame 11 is welded on the outer wall of the top of the support column 2, a seal box 3 is welded on the outer wall of the top of the support frame 11, a valve 4 is rotatably connected to the outer wall of one side of the seal box 3, a driving gear 15 is welded on the outer wall of one side of the valve 4, a driven gear 16 is meshed with the outer wall of the top of the driving gear 15, a threaded column 14 is welded on the outer wall of one side of the driven gear 16, a sector gear 17 is meshed with the outer wall of one side of the threaded column 14, a rotating column 18 is welded on the outer wall of the bottom of the sector; when opening and shutting the operation to the butterfly valve, drive driving gear 15 through rotating valve 4 and rotate, driving gear 15 drives driven gear 16 and rotates, and driven gear 16 can weaken driving gear 15's moment, and driven gear 16 drives screw post 14 and rotates, and screw post 14 drives sector gear 17 and rotates, and sector gear 17 both ends have stop device, can carry on spacingly to sector gear 17's movement distance and stroke, drive through sector gear 17 and rotate post 18 and rotate.

In order to facilitate the installation of the butterfly plates 8, as shown in fig. 2 and 3, the outer wall of the top of the rotating column 18 is fixed with an upper connecting column 9 through bolts, the outer wall of one side of the upper connecting column 9 is welded with the butterfly plates 8, the outer wall of one side of the bottom of each butterfly plate 8 is welded with a lower connecting column 20, the outer wall of the bottom of the valve body 1 is fixed with a fixed seat 7 through bolts, the inner wall of the fixed seat 7 is rotatably connected with a rotating shaft 19, the outer wall of the rotating shaft 19 is fixed with the lower connecting column 20 through bolts, and the outer wall of one; when installing the butterfly plate 8, earlier with last spliced pole 9 through the bolt fastening in rotate the outer wall of post 18 bottom, pass through the bolt fastening with fixing base 7 in the outer wall of valve body 1 bottom after that, make pivot 19 slide to the inner wall of lower connecting post 20, fix pivot 19 between lower connecting post 20 through the bolt after that, can control the rotatory angle of butterfly plate 8 through rotary valve 4 to seal and open valve body 1.

In order to improve the sealing performance of the valve body 1, as shown in fig. 1 and 3, a rubber sheath 6 is arranged on the outer wall of the butterfly plate 8, flanges 5 are welded on the outer walls of two sides of the valve body 1, a pipeline 12 is fixed on the outer wall of the flange 5 through a bolt, a sealing pipe 10 is welded on the outer wall of one side of the pipeline 12, a rubber sealing ring 13 is connected to the inner wall of the valve body 1 in a sliding manner, and the outer wall of the sealing pipe 10 is connected to the outer wall of the top of the; the friction between the butterfly plate 8 and the inner wall of the valve body 1 can be reduced through the rubber sheath 6, the corrosion of water flow to the butterfly plate 8 is reduced, and the rubber sealing ring 13 can be attached between the sealing pipe 10 on the outer wall of the pipeline 12 and the rubber sealing ring 13 when the valve body 1 and the pipeline 12 are installed, so that the sealing performance of the valve body 1 is enhanced.

The working principle is as follows: when the butterfly valve is opened and closed, the driving gear 15 is driven to rotate by rotating the valve 4, the driving gear 15 drives the driven gear 16 to rotate, the driven gear 16 can weaken the torque of the driving gear 15, the driven gear 16 drives the threaded column 14 to rotate, the threaded column 14 drives the sector gear 17 to rotate, two ends of the sector gear 17 are provided with limiting devices which can limit the movement distance and the stroke of the sector gear 17, the sector gear 17 drives the rotating column 18 to rotate, when the butterfly valve 8 is installed, the upper connecting column 9 is fixed on the outer wall of the bottom of the rotating column 18 through bolts, the fixed seat 7 is fixed on the outer wall of the bottom of the valve body 1 through bolts, the rotating shaft 19 slides to the inner wall of the lower connecting column 20, the rotating shaft 19 is fixed between the lower connecting columns 20 through bolts, the rotating valve 4 can control the rotating angle of the butterfly valve 8, and therefore, the valve body 1 is, the friction between the butterfly plate 8 and the inner wall of the valve body 1 can be reduced through the rubber sheath 6, the corrosion of water flow to the butterfly plate 8 is reduced, and the rubber sealing ring 13 can be attached between the sealing pipe 10 on the outer wall of the pipeline 12 and the rubber sealing ring 13 when the valve body 1 and the pipeline 12 are installed, so that the sealing performance of the valve body 1 is enhanced.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Soft eccentric butterfly valve of sealing, including valve body (1), valve body (1) top outer wall welding has support column (2), support column (2) top outer wall welding has support frame (11), support frame (11) top outer wall welding has seal box (3), seal box (3) one side outer wall rotates and is connected with valve (4), valve (4) one side outer wall welding has driving gear (15), driving gear (15) top outer wall meshing has driven gear (16), driven gear (16) one side outer wall welding has threaded column (14).

2. The flexible sealing eccentric butterfly valve according to claim 1, characterized in that a sector gear (17) is meshed with the outer wall of one side of the threaded column (14), a rotating column (18) is welded on the outer wall of the bottom of the sector gear (17), and the outer wall of the rotating column (18) is slidably connected with the inner wall of the top of the valve seat.

3. The flexible sealing eccentric butterfly valve according to claim 2, characterized in that the top outer wall of the rotating column (18) is fixed with an upper connecting column (9) through bolts, a butterfly plate (8) is welded on the outer wall of one side of the upper connecting column (9), and a lower connecting column (20) is welded on the outer wall of one side of the bottom of the butterfly plate (8).

4. The soft sealing eccentric butterfly valve according to claim 3, characterized in that the outer wall of the bottom of the valve body (1) is fixed with a fixed seat (7) through bolts, and the inner wall of the fixed seat (7) is rotatably connected with a rotating shaft (19).

5. The soft-sealing eccentric butterfly valve according to claim 4, wherein the outer wall of the rotating shaft (19) is fixed with a lower connecting column (20) through bolts, and the outer wall of one side of the lower connecting column (20) is welded on the outer wall of one side of the butterfly plate (8).

6. The flexible sealing eccentric butterfly valve according to claim 5, characterized in that the outer wall of the butterfly plate (8) is provided with a rubber sheath (6), the outer walls of both sides of the valve body (1) are welded with flanges (5), and the outer wall of the flanges (5) is fixed with a pipeline (12) through bolts.

7. The flexible sealing eccentric butterfly valve according to claim 6, characterized in that a sealing tube (10) is welded on the outer wall of one side of the pipeline (12), a rubber sealing ring (13) is connected on the inner wall of the valve body (1) in a sliding manner, and the outer wall of the sealing tube (10) is connected on the outer wall of the top of the rubber sealing ring (13) in a sliding manner.