CN212203158U

CN212203158U - Corrosion-resistant butterfly valve with good sealing performance

Info

Publication number: CN212203158U
Application number: CN202020434131.1U
Authority: CN
Inventors: 朱传华
Original assignee: Shanghai Taikelong Valve Co ltd
Current assignee: Shanghai Taikelong Valve Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-12-22
Anticipated expiration: 2030-03-30

Abstract

The utility model discloses an anticorrosive butterfly valve that and leakproofness are good, including valve body, dish board and valve shaft, the valve body is equipped with circular inner chamber, just be equipped with in the circular inner chamber the dish board, the inner chamber of valve body has radially seted up the shaft hole, just the valve shaft run through in the shaft hole with dish board fixed connection, wherein, the inner chamber of valve body with the dish board cooperation forms the route of switching, the dish board with be equipped with sealing mechanism between the valve body inner chamber, sealing mechanism includes the fixed plate, the fixed plate is located the valve body outside is served, the fixed plate side is equipped with fixed block one, fixed block one just corresponds the one end middle part of valve body is equipped with the connecting plate, the connecting plate run through in the valve body extends to valve body inner chamber one end just is equipped with fixed block two. Has the advantages that: the valve shaft is prevented from being corroded, and the service life and the use safety of the valve body can be effectively improved.

Description

Corrosion-resistant butterfly valve with good sealing performance

Technical Field

The utility model relates to a butterfly valve technical field particularly, relates to a butterfly valve that anticorrosive and leakproofness are good.

Background

The butterfly valve is also called a flap valve, is a regulating valve with simple structure, and can be used for on-off control of low-pressure pipeline media. The butterfly valve is a valve in which a closing member (a valve clack or a butterfly plate) is a disk and rotates around a valve shaft to open and close, and mainly plays a role in cutting off and throttling on a pipeline. 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.

At present, the butterfly valve in the market comprises a butterfly plate, a valve body with a circular inner cavity and a valve shaft used for driving the butterfly plate to rotate, wherein a shaft hole is formed in the inner cavity of the valve body in the radial direction, the valve shaft penetrates through the shaft hole to be fixedly connected with the butterfly plate, the inner cavity of the valve body is matched with the butterfly plate to form a path for opening and closing, and the butterfly plate is driven to rotate through rotation of the valve shaft, so that the purpose of opening and closing or adjusting is achieved. Although the butterfly valve adopts measures such as covering a ceramic layer on the inner cavity of the valve body, the butterfly plate and the valve shaft and installing a sealing ring on the butterfly plate to enhance the corrosion resistance and the sealing property, the sealing property of the joint part of the butterfly plate and the valve body is insufficient, fluid medium is easy to enter a gap along the valve shaft, the valve shaft and the shaft hole are easy to corrode, and the service life and the use of the butterfly valve are influenced.

SUMMERY OF THE UTILITY MODEL

The technical task of the utility model is to above not enough, provide a butterfly valve that anticorrosive and leakproofness are good, solve foretell problem.

The technical scheme of the utility model is realized like this:

a butterfly valve with good corrosion resistance and sealing performance comprises a valve body, a disc plate and a valve shaft, wherein the valve body is provided with a circular inner cavity, the disc plate is arranged in the circular inner cavity, a shaft hole is formed in the inner cavity of the valve body in the radial direction, and the valve shaft penetrates through the shaft hole and is fixedly connected with the disc plate, wherein the inner cavity of the valve body is matched with the disc plate to form a passage for opening and closing, a sealing mechanism is arranged between the disc plate and the inner cavity of the valve body and comprises a fixing plate, the fixing plate is positioned at the outer side end of the valve body, a first fixing block is arranged at the side edge of the fixing plate, a connecting plate is arranged in the middle of one end of the first fixing block corresponding to the valve body and penetrates through the valve body to extend to one end of the inner cavity of the valve body and is provided with a second fixing block, the upper part and, last semicircular structure with lower semicircular structure just all is close to the side one end of fixed block two all is equipped with the connecting rod, the connecting rod just keeps away from last semicircular structure with semicircular structure's one end all is equipped with the lug down, the lug is all fixed on the side tip of fixed plate, last semicircular structure with semicircular structure inboard is equipped with the sealing ring down, just the inboard of sealing ring with the dish board is pasted mutually surely, the outside of sealing ring through a plurality of spring assembly with last semicircular structure and lower semicircular structure inner wall fixed connection.

Preferably, the upper semicircular structure and the inner wall of the lower semicircular structure are respectively provided with a fixing ring, and two ends of the connecting rod are movably connected with the corresponding end parts of the upper semicircular structure, the lower semicircular structure and the lug through movable shafts.

Preferably, the outer side of the sealing ring is provided with a plurality of arc limiting blocks matched with the outer wall of the sealing ring, the number of the arc limiting blocks is equal to that of the spring groups, and one end of each spring group is fixed to the middle of the outer side of each arc limiting block.

Preferably, a middle cavity is arranged inside the sealing ring, a filler is filled in the middle cavity, and the filler comprises light polyurethane foam, artificial cotton, a silica gel sealing gasket and a rubber ring.

Preferably, the upper semicircular structure and the lower semicircular structure are both positioned on the inner side of the middle cavity of the valve body and are matched with the inner wall of the inner cavity of the valve body.

Preferably, sealing sleeves are arranged on the contact surfaces of the valve shaft and the valve body, and are made of polytetrafluoroethylene.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

1. through set up sealing mechanism at the valve body inner chamber and the face that meets of dish board, the leakproofness between multiplicable dish board and the valve body, inside the effectual fluid medium that has completely cut off got into the valve body along the valve shaft, avoided producing the corruption valve shaft, can effectively improve the life and the security of use of valve body.

2. The spring set arranged in the sealing structure can effectively improve the sealing effect, can be adjusted according to the size of the joint surface of the outer periphery of the disc plate and the inner cavity of the valve body, and can increase the sealing effect between the valve body and the disc plate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram according to an embodiment of the present invention;

fig. 2 is a schematic view of a sealing mechanism according to an embodiment of the present invention.

In the figure:

1. a valve body; 2. a plate; 3. a valve shaft; 4. a sealing mechanism; 5. a fixing plate; 6. a first fixed block; 7. a connecting plate; 8. a second fixed block; 9. an upper semicircular structure; 10. a lower semicircular structure; 11. a connecting rod; 12. a bump; 13. a seal ring; 14. a spring set; 15. a fixing ring; 16. an arc-shaped limiting block; 17. and (4) filling materials.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

The invention will be further explained with reference to the drawings and the specific embodiments.

In the first embodiment, as shown in fig. 1-2, a butterfly valve with good corrosion resistance and sealing performance according to an embodiment of the present invention includes a valve body 1, a disc plate 2 and a valve shaft 3, wherein the valve body 1 has a circular inner cavity, the disc plate 2 is disposed in the circular inner cavity, the inner cavity of the valve body 1 has a shaft hole in a radial direction, and the valve shaft 3 penetrates through the shaft hole and is fixedly connected to the disc plate 2, wherein the inner cavity of the valve body 1 and the disc plate 2 cooperate to form a passage for opening and closing, a sealing mechanism 4 is disposed between the disc plate 2 and the inner cavity of the valve body 1, the sealing mechanism 4 includes a fixing plate 5, the fixing plate 5 is located at an outer end of the valve body 1, a first fixing block 6 is disposed at a side of the fixing plate 5, a connecting plate 7 is disposed at a middle portion of one end of the first fixing block 6 corresponding to the valve body 1, the connecting plate 7 penetrates through the valve body, two 8 upper portions of fixed block and lower part are equipped with last semicircular structure 9 respectively and with last semicircular structure 9 matched with lower semicircular structure 10, last semicircular structure 9 with semicircular structure 10 just all is close to down the side one end of two 8 of fixed block all is equipped with connecting rod 11, connecting rod 11 just keeps away from last semicircular structure 9 with semicircular structure 10's one end all is equipped with lug 12 down, lug 12 all fixes on the side tip of fixed plate 5, last semicircular structure 9 with semicircular structure 10 inboard is equipped with sealing ring 13 down, just sealing ring 13 the inboard with dish board 2 pastes surely mutually, the outside of sealing ring 13 through a plurality of spring assembly 14 with last semicircular structure 9 and semicircular structure 10 inner wall fixed connection down.

In the second embodiment, as shown in fig. 2, the inner walls of the upper semicircular structure 9 and the lower semicircular structure 10 are respectively provided with a fixing ring 15, and two ends of the connecting rod 11 are respectively movably connected with the corresponding ends of the upper semicircular structure 9, the lower semicircular structure 10 and the bump 12 through a movable shaft.

In a third embodiment, as shown in fig. 2, a plurality of arc-shaped limit blocks 16 are arranged on the outer side of the sealing ring 13 and are matched with the outer wall of the sealing ring 13, the number of the arc-shaped limit blocks 16 is the same as that of the spring groups 14, and one end of each spring group 14 is fixed on the middle part of the outer side of each arc-shaped limit block 16.

In the fourth embodiment, as shown in fig. 2, a middle cavity is arranged inside the sealing ring 13, a filler 17 is filled in the middle cavity, and the filler 17 includes light polyurethane foam, artificial cotton, a silica gel sealing gasket, and a rubber ring.

In the fifth embodiment, as shown in fig. 1-2, the upper semicircular structure 9 and the lower semicircular structure 10 are both located inside the middle cavity of the valve body 1 and are adapted to the inner wall of the inner cavity of the valve body 1, and sealing sleeves are respectively arranged on the contact surfaces of the valve shaft 3 and the valve body 1, and are made of polytetrafluoroethylene.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, be equipped with sealing mechanism 4 between dish board 2 and the 1 inner chamber of valve body, wherein, dish board 2 is inlayed inside sealing ring 13, when the gap between dish board 2 and the 1 inner chamber of valve body is great, can support sealing ring 13 according to the demand, let sealing ring 13 press spring assembly 14 toward outer the support, and the inside filler 17 of sealing ring 13 middle chamber has the resilience effect, can effectively guarantee closely pasting between dish board 2 and the sealing ring 13, prevent to cause the fluid medium to flow, wherein, the tight angle of clamp between last semi-circular structure 9 and lower semi-circular structure 10 also all can be adjusted, accessible connecting rod 11 is adjusted, make can adjust the tight angle of clamp between last semi-circular structure 9 and lower semi-circular structure 10 according to 1 inner chamber size of valve body, effectively increase its leakproofness.

Through the above detailed description, the person skilled in the art can easily realize the present invention. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.

Claims

1. The butterfly valve is corrosion-resistant and good in sealing performance, and is characterized by comprising a valve body (1), a disc plate (2) and a valve shaft (3), wherein the valve body (1) is provided with a circular inner cavity, the disc plate (2) is arranged in the circular inner cavity, the inner cavity of the valve body (1) is radially provided with a shaft hole, the valve shaft (3) penetrates through the shaft hole and the disc plate (2) to be fixedly connected, the inner cavity of the valve body (1) is matched with the disc plate (2) to form a passage for opening and closing, a sealing mechanism (4) is arranged between the disc plate (2) and the inner cavity of the valve body (1), the sealing mechanism (4) comprises a fixing plate (5), the fixing plate (5) is positioned on the outer side end of the valve body (1), the side edge of the fixing plate (5) is provided with a first fixing block (6), the first fixing block (6) corresponds to the middle part of one end of the valve, the connecting plate (7) runs through the valve body (1) and extends to one end of an inner cavity of the valve body (1) and is provided with two fixed blocks (8), the upper part and the lower part of each fixed block (8) are respectively provided with an upper semicircular structure (9) and a lower semicircular structure (10) matched with the upper semicircular structure (9), the upper semicircular structure (9) and the lower semicircular structure (10) are respectively provided with a connecting rod (11) at one end close to the side edge of the two fixed blocks (8), the connecting rod (11) is far away from one end of each of the upper semicircular structure (9) and the lower semicircular structure (10) and is provided with a lug (12), the lug (12) is fixed on the end part of the side edge of the fixed plate (5), the inner side of the upper semicircular structure (9) and the lower semicircular structure (10) is provided with a sealing ring (13), and the inner side of the sealing ring (13) is matched with the disc plate (2), the outer side of the sealing ring (13) is fixedly connected with the inner walls of the upper semicircular structure (9) and the lower semicircular structure (10) through a plurality of spring groups (14).

2. The butterfly valve of claim 1, wherein the inner walls of the upper semicircular structure (9) and the lower semicircular structure (10) are provided with fixing rings (15), and both ends of the connecting rod (11) are movably connected with the corresponding ends of the upper semicircular structure (9), the lower semicircular structure (10) and the projection (12) through movable shafts.

3. The butterfly valve with corrosion resistance and good sealing performance according to claim 1, wherein a plurality of arc-shaped limiting blocks (16) matched with the outer wall of the sealing ring (13) are arranged on the outer side of the sealing ring (13), the number of the arc-shaped limiting blocks (16) is the same as that of the spring groups (14), and one end of each spring group (14) is fixed on the middle portion of the outer side of each arc-shaped limiting block (16).

4. The butterfly valve with corrosion resistance and good sealing performance according to claim 1, wherein a middle cavity is arranged inside the sealing ring (13), a filler (17) is filled in the middle cavity, and the filler (17) comprises light polyurethane foam, artificial cotton, a silica gel sealing gasket and a rubber ring.

5. The butterfly valve with corrosion resistance and good sealing performance according to claim 1, wherein the upper semicircular structure (9) and the lower semicircular structure (10) are both located inside the cavity of the valve body (1) and are matched with the inner wall of the cavity of the valve body (1).

6. The butterfly valve with corrosion resistance and good sealing performance according to claim 1, wherein sealing sleeves are arranged on the contact surfaces of the valve shaft (3) and the valve body (1), and are made of polytetrafluoroethylene.