CN219692286U

CN219692286U - Butterfly valve sealing mechanism

Info

Publication number: CN219692286U
Application number: CN202223151004.9U
Authority: CN
Inventors: 张晓华; 尹富露; 张墨涵
Original assignee: Qidong Ruitong Valve Co ltd
Current assignee: Qidong Ruitong Valve Co ltd
Priority date: 2022-11-26
Filing date: 2022-11-26
Publication date: 2023-09-15
Anticipated expiration: 2032-11-26

Abstract

The utility model discloses a butterfly valve sealing mechanism, which comprises a butterfly valve body and a rotating disc arranged on the outer side of the butterfly valve body, wherein the side surface of the rotating disc is provided with a switch adjusting mechanism extending to the inner part of the butterfly valve body, a circulation cavity is formed in the butterfly valve body, the inner wall of the circulation cavity is provided with a sealing air bag, the inner side of the sealing air bag is provided with a switch plate connected with the bottom of the switch adjusting mechanism, and the bottom of the sealing air bag is provided with a blowing mechanism; this butterfly valve sealing mechanism carries out driven sealed gasbag and sealing mechanism internals's design through blast mechanism internals, can carry out the tight laminating to the side of switch board when closing the valve operation by sealed gasbag's extrusion, promotes the sealed effect to the switch board side, avoids because long-time operation, leads to the switch board side to take place wearing and tearing because of the friction, and then leads to the seepage of rivers, safer when using.

Description

Butterfly valve sealing mechanism

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve sealing mechanism.

Background

The butterfly valve is also called as flap valve, and is a simple-structure regulating valve, and can be used for controlling the opening and closing of low-pressure pipeline medium, and the butterfly valve is a valve in which a closing member (a valve clack or a butterfly plate) is a disc and rotates around a valve shaft to achieve the opening and closing, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive mediums, slurry, oil products, liquid metal, radioactive mediums and the like, and mainly has the functions of cutting off and throttling on a pipeline.

But at present, when butterfly valve on the market is in use, the door plant that is used for the switch is contacted with the rubber pad of circulation hole inner wall and realizes sealedly, after long-time use switch, because the friction of switch door plant and rubber pad can lead to the fact wearing and tearing to the rubber pad, and then can influence its sealed effect, leads to the seepage of rivers, and this, proposes a butterfly valve that sealed effect is good.

Disclosure of Invention

The utility model aims to provide a butterfly valve sealing mechanism, which aims to solve the problems that when the butterfly valve in the market is used in the prior art, a door plate for opening and closing is in contact with a rubber pad on the inner wall of a circulation hole to realize sealing, and after the valve is used for a long time, the friction between the door plate for opening and closing and the rubber pad can cause abrasion to the rubber pad, so that the sealing effect of the rubber pad can be affected, and water flow leakage is caused.

In order to achieve the above purpose, the present utility model provides the following technical solutions: butterfly valve sealing mechanism, including butterfly valve body and install the rolling disc in the butterfly valve body outside, the side of rolling disc is provided with the on-off control mechanism who extends to the butterfly valve body inside, the circulation chamber has been seted up to the inside of butterfly valve body, the inner wall in circulation chamber is provided with sealed gasbag, sealed gasbag's inboard is provided with the switch board that on-off control mechanism bottom is connected, sealed gasbag's bottom is provided with blast mechanism, sealed gasbag and on-off control mechanism's junction is provided with sealing mechanism.

Preferably, the switch adjustment mechanism comprises a driving shaft, a positioning block, a first conical gear, a second conical gear, a rotating shaft rod and a positioning pin, one end of the driving shaft is installed on the side face of the rotating disc, the bottom of the driving shaft extends to the inside of the butterfly valve body and is rotationally connected with a group of positioning blocks, the positioning blocks are installed in the butterfly valve body, the bottom of the driving shaft is fixedly provided with the first conical gear, the side face of the first conical gear is meshed and connected with the second conical gear, the rotating shaft rod is fixedly installed at the inner center of the second conical gear, and the bottom of the rotating shaft rod extends to the inside of the circulation cavity and is fixedly provided with a switch board through the positioning pin.

Preferably, the first bevel gear and the second bevel gear are identical in structural shape and are vertically arranged relatively, and the rotating shaft rod is fixedly connected with another group of positioning blocks which are fixedly arranged in the butterfly valve body in a rotating way.

Preferably, the inner side of the sealing air bag is concave inwards, and the sealing air bag is adhered to the inner side of the circulation cavity.

Preferably, the blower mechanism comprises a micro fan and a transmission pipeline, the micro fan is arranged at the inner bottom of the butterfly valve body, the inlet and the outlet of the micro fan are connected with the transmission pipeline, the transmission pipeline at the inlet extends to the outer side of the butterfly valve body, and the transmission pipeline at the outlet is connected with the inlet of the sealing air bag.

Preferably, the sealing mechanism comprises a through hole and a sealing gasket, the through hole is formed in the inner side of the top of the sealing air bag, the through hole is rotationally connected with the rotating shaft rod, and the sealing gasket arranged on the inner side of the through hole is arranged on the outer side of the rotating shaft rod.

Compared with the prior art, the utility model has the beneficial effects that: according to the butterfly valve sealing mechanism, due to the design of the sealing air bag driven by the internal parts of the air blowing mechanism and the internal parts of the sealing mechanism, when the valve closing operation is carried out, the side edges of the switch plate can be tightly attached by extrusion of the sealing air bag, the sealing effect on the side edges of the switch plate is improved, the side surfaces of the switch plate are prevented from being worn due to friction caused by long-time operation, and water flow leakage is further caused, and the butterfly valve sealing mechanism is safer in use;

1. through the design of switch adjustment mechanism internals, the manual rotation of accessible realizes corresponding butterfly valve switch operation, and the operation is more convenient.

Drawings

FIG. 1 is a schematic view of the present utility model in a front cross-section;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is a schematic diagram of the connection structure of the switch adjusting mechanism and the switch board of the present utility model;

FIG. 4 is a schematic view of the connection structure of the rotating shaft, the blower mechanism and the sealing mechanism of the present utility model.

In the figure: 1. a butterfly valve body; 2. a rotating disc; 3. a switch adjusting mechanism; 301. a drive shaft; 302. a positioning block; 303. a first bevel gear; 304. a second bevel gear; 305. rotating the shaft lever; 306. a positioning pin; 4. a flow-through chamber; 5. sealing the air bag; 6. a switch board; 7. a blowing mechanism; 701. a micro fan; 702. a transmission pipeline; 8. a sealing mechanism; 801. a through hole; 802. and a sealing gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the butterfly valve sealing mechanism comprises a butterfly valve body 1 and a rotating disc 2 arranged on the outer side of the butterfly valve body 1;

the side surface of the rotating disc 2 is provided with a switch adjusting mechanism 3 extending into the butterfly valve body 1;

the switch adjusting mechanism 3 comprises a driving shaft 301, a positioning block 302, a first conical gear 303, a second conical gear 304, a rotating shaft rod 305 and a positioning pin 306, one end of the driving shaft 301 is installed on the side face of the rotating disc 2, the bottom of the driving shaft 301 extends to the inside of the butterfly valve body 1 and is in rotary connection with one group of positioning blocks 302, the positioning blocks 302 are installed in the inside of the butterfly valve body 1, the bottom of the driving shaft 301 is fixedly provided with the first conical gear 303, the side face of the first conical gear 303 is in meshed connection with the second conical gear 304, the rotating shaft rod 305 is fixedly installed in the center of the inside of the second conical gear 304, the bottom of the rotating shaft rod 305 extends to the inside of the circulation cavity 4 and is fixedly provided with a switch plate 6 through the positioning pin 306, the first conical gear 303 and the second conical gear 304 are identical in structural shape and are vertically arranged relatively, and the rotating shaft rod 305 is in rotary connection with the other group of the positioning blocks 302 fixedly installed in the inside of the butterfly valve body 1.

Further, through the design of the driving shaft 301, the positioning block 302, the first bevel gear 303, the second bevel gear 304, the rotating shaft lever 305 and the positioning pin 306 in the switching adjusting mechanism 3, the outer side of the rotating shaft lever 305 can be driven to rotate through the fixed switching plate 6 of the positioning pin 306, so that the butterfly valve body 1 can perform switching operation.

It should be noted that: the manual rotation rotating disc 2 drives the driving shaft 301 fixedly arranged on the side face to rotate, and then drives the first conical gear 303 fixedly arranged on the bottom of the manual rotation rotating disc to rotate, because the first conical gear 303 is meshed with the second conical gear 304, the rotation of the driving shaft 301 drives the second conical gear 304 and the rotating shaft rod 305 fixedly arranged in the second conical gear 304 to rotate, the function of driving the switch plate 6 to rotate is achieved, and then the switching operation of the butterfly valve body 1 is completed.

The butterfly valve comprises a butterfly valve body 1, a sealing air bag 5, a switch plate 6, a switch adjusting mechanism 3 and an air blowing mechanism 7, wherein a circulation cavity 4 is formed in the butterfly valve body 1, the sealing air bag 5 is arranged on the inner wall of the circulation cavity 4, the switch plate 6 is connected with the bottom of the switch adjusting mechanism 3 and is arranged on the inner side of the sealing air bag 5, and the air blowing mechanism 7 is arranged on the bottom of the sealing air bag 5;

wherein, the inboard of sealed gasbag 5 is inwards sunken, and sealed gasbag 5 adhesion is in the inboard of circulation chamber 4, and blower mechanism 7 includes miniature fan 701 and transmission pipeline 702, and miniature fan 701 is installed in the interior bottom of butterfly valve body 1, and the exit of miniature fan 701 is connected with transmission pipeline 702, and transmission pipeline 702 of import department extends to the outside of butterfly valve body 1, and transmission pipeline 702 of exit is connected with sealed gasbag 5's import department.

Further, through the design of the miniature fan 701 and the transmission pipeline 702 in the blast mechanism 7, when the butterfly valve body 1 is closed, firstly, the switch board 6 is rotated to be attached to the circulation cavity 4, afterwards, the miniature fan 701 is started to operate through the controller, blast operation is carried out on the sealing air bag 5, the side edge of the switch board 6 can move to the concave part on the inner side of the sealing air bag 5 because of the expansion of the sealing air bag 5, and then the closing operation of the sealing and butterfly valve body 1 is completed, meanwhile, the sealing effect is good, the avoided long-time operation leads to abrasion with the side edge of the closing valve, and then water flow leakage is caused, and meanwhile, when the opening operation is carried out, the miniature fan 701 is started to operate through the controller, and certain deflation operation is carried out on the sealing air bag 5, so that the rotation of the switch board 6 and the subsequent valve opening operation are facilitated.

A sealing mechanism 8 is arranged at the joint of the sealing air bag 5 and the switch adjusting mechanism 3;

wherein, sealing mechanism 8 includes through-hole 801 and sealing gasket 802, and the inboard at sealed gasbag 5 top is seted up to through-hole 801, and through-hole 801 and rotation axostylus axostyle 305 rotate to be connected, and the outside of rotation axostylus axostyle 305 is provided with the sealing gasket 802 of installing at the inboard of through-hole 801.

Further, through the design of the inside through hole 801 of sealing mechanism 8 and sealing gasket 802, when carrying out the ooff valve, can seal the rotation of rotating axostylus axostyle 305 and handle, avoid rivers to remove to the bottom of locating piece 302 along through hole 801, cause the seepage of rivers, when the valve is closed simultaneously, can further extrude through hole 801 through the inflation of sealing gasket 802 outside sealed gasbag 5, further promote the sealed effect to this butterfly valve body 1.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Butterfly valve sealing mechanism, including butterfly valve body (1) and install rotating disk (2) in butterfly valve body (1) outside, its characterized in that: the side of rolling disc (2) is provided with and extends to inside switch adjustment mechanism (3) of butterfly valve body (1), circulation chamber (4) have been seted up to the inside of butterfly valve body (1), the inner wall of circulation chamber (4) is provided with sealed gasbag (5), the inboard of sealed gasbag (5) is provided with switch board (6) that switch adjustment mechanism (3) bottom is connected, the bottom of sealed gasbag (5) is provided with blast mechanism (7), the junction of sealed gasbag (5) and switch adjustment mechanism (3) is provided with sealing mechanism (8).

2. The butterfly valve seal mechanism of claim 1, wherein: the utility model provides a switch adjustment mechanism (3) includes drive shaft (301), locating piece (302), first conical gear (303), second conical gear (304), rotation axostylus axostyle (305) and locating pin (306), the side at rotor (2) is installed to the one end of drive shaft (301), the bottom of drive shaft (301) extends to the inside of butterfly valve body (1) and rotates with a set of locating piece (302) to be connected, the inside at butterfly valve body (1) is installed to locating piece (302), the bottom fixed mounting of drive shaft (301) has first conical gear (303), the side meshing of first conical gear (303) is connected with second conical gear (304), the inside center department fixed mounting of second conical gear (304) has rotation axostylus axostyle (305), the bottom of rotation axostylus axostyle (305) extends to the inside of circulation chamber (4) and is fixed mounting through locating pin (306) switch board (6).

3. The butterfly valve seal mechanism of claim 2, wherein: the first bevel gear (303) and the second bevel gear (304) are identical in structural shape and are vertically arranged relatively, and the rotating shaft rod (305) is rotationally connected with another group of positioning blocks (302) fixedly arranged in the butterfly valve body (1).

4. The butterfly valve seal mechanism of claim 1, wherein: the inner side of the sealing air bag (5) is concave inwards, and the sealing air bag (5) is adhered to the inner side of the circulation cavity (4).

5. The butterfly valve seal mechanism of claim 1, wherein: the air blowing mechanism (7) comprises a micro fan (701) and a transmission pipeline (702), the micro fan (701) is arranged at the inner bottom of the butterfly valve body (1), the transmission pipeline (702) is connected with an inlet and an outlet of the micro fan (701), the transmission pipeline (702) at the inlet is extended to the outer side of the butterfly valve body (1), and the transmission pipeline (702) at the outlet is connected with the inlet of the sealing air bag (5).

6. The butterfly valve seal mechanism of claim 2, wherein: the sealing mechanism (8) comprises a through hole (801) and a sealing gasket (802), the through hole (801) is formed in the inner side of the top of the sealing air bag (5), the through hole (801) is rotationally connected with the rotating shaft rod (305), and the sealing gasket (802) arranged on the inner side of the through hole (801) is arranged on the outer side of the rotating shaft rod (305).