CN210344326U

CN210344326U - Dust butterfly valve

Info

Publication number: CN210344326U
Application number: CN201920788231.1U
Authority: CN
Inventors: 周仪勤; 刘可平; 何海慧
Original assignee: Universal Valve Co ltd
Current assignee: Universal Valve Co ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-04-17
Anticipated expiration: 2029-05-29

Abstract

The utility model provides a dust butterfly valve, which comprises a valve body, the upper end lateral wall intercommunication of valve body is equipped with first axle sleeve, insert in the first axle sleeve and establish and rotate and be connected with first valve shaft, be located the valve body the one end fixedly connected with valve plate of first valve shaft, the one end lateral wall fixedly connected with that first valve shaft was kept away from to the valve plate is located the second valve shaft of coaxial line with first valve shaft, one side lateral wall intercommunication that first axle sleeve was kept away from to the valve body is equipped with the second axle sleeve, the second valve shaft is inserted and is located in the second axle sleeve and rotate rather than the inner wall and be connected, is located first valve shaft both sides the gasbag that the outer circumference lateral wall fixedly connected with symmetry of. The utility model discloses in, pressurize in to the gasbag through piston device and supply gas, make the gasbag inflation to extrude pushing down the gap between valve plate and the valve body, reaching sealed effect, avoided traditional sealing rubber circle wearing and tearing and expend with heat and contract with cold's influence to make the not tight condition of butterfly valve seal take place.

Description

Dust butterfly valve

Technical Field

The utility model relates to a valve manufacturing technology field especially relates to a dust butterfly valve.

Background

The butterfly valve is a regulating valve with simple structure, and can be used for on-off control of low-pressure pipeline media, namely, a valve with a closing member (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to open and close, wherein the dust butterfly valve is one of the butterfly valves and is used for hard particle dust media such as dry dust and the like.

For a dust butterfly valve, hard particle dust media such as dry dust and the like can cause the blockage of a main valve if a hard sealing valve is used, so that the condition that the valve is not tightly closed is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dust butterfly valve to solve above-mentioned technical problem.

The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme to realize: a dust butterfly valve comprises a valve body, wherein a first shaft sleeve is communicated with the upper end side wall of the valve body, a first valve shaft is inserted in the first shaft sleeve and is connected in a rotating mode, a valve plate is fixedly connected to one end, far away from the first valve shaft, of the valve plate, a second valve shaft which is coaxial with the first valve shaft is fixedly connected to the side wall of the valve plate, far away from the first valve shaft, a second shaft sleeve is communicated with the side wall of the valve body, far away from the first shaft sleeve, the second valve shaft is inserted in the second shaft sleeve and is connected with the inner wall of the second shaft sleeve in a rotating mode, symmetrically arranged air bags are fixedly connected to the outer circumferential side walls of the valve plate, located on the two sides of the first valve shaft, a sliding cavity is formed in the first valve shaft, a piston device is arranged in the sliding cavity in a sliding mode, an inverted T-shaped air duct communicated with the sliding cavity is formed in, the side wall of the first valve shaft positioned outside the first shaft sleeve is fixedly connected with a handle.

Preferably, the piston device includes the threaded rod, the one end of threaded rod runs through the roof of first valve shaft and rather than threaded connection, is located in the smooth chamber the one end fixedly connected with cylindricality piece of threaded rod, sliding connection has the piston in the smooth chamber, the last lateral wall fixedly connected with connecting block of piston, seted up in the connecting block with cylindricality piece looks adaptation cylindricality groove, the cylindricality piece is located the setting in the cylindricality groove, the one end fixedly connected with knob of threaded rod far away from the cylindricality piece.

Preferably, the air bag is made of synthetic rubber, and the air bag and the valve plate are fixedly connected by rubber and a metal adhesive, namely Kemmolok.

Preferably, an annular air tap is fixedly connected to an opening of the air bag communicated with the inverted T-shaped air passage, and the air tap is inserted into the opening of the inverted T-shaped air passage.

Preferably, one end of the second valve shaft, which is far away from the valve plate, is sleeved with and fixedly connected with a sealing sleeve.

Preferably, a sealing glue is arranged at the junction of the first shaft sleeve and the valve body.

The utility model has the advantages that:

1. through the setting of piston device and gasbag, when closing the butterfly valve, supply gas through piston device pressurization in to the gasbag, make the gasbag inflation to squeeze the gap between valve plate and the valve body, reach sealed effect, avoided traditional sealing rubber circle wearing and tearing and expend with heat and contract with cold's influence to make the not tight condition of butterfly valve seal take place.

2. Through the arrangement of the cylindrical block and the cylindrical groove, the piston cannot be driven to rotate when the rotary threaded rod pressurizes and supplies air to the air bag, so that extra friction between the piston and the inner wall of the sliding cavity is avoided, and the piston device can slide smoothly in the sliding cavity.

Drawings

FIG. 1 is a schematic front view of a dust butterfly valve according to the present invention;

FIG. 2 is a schematic front sectional view of a dust butterfly valve according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

fig. 4 is an enlarged view of the structure at B in fig. 2.

Reference numerals: 1. a valve body; 2. a first bushing; 3. a first valve shaft; 4. a valve plate; 5. a second valve shaft; 6. a second shaft sleeve; 7. an air bag; 8. a slide chamber; 9. a piston device; 91. a threaded rod; 92. a cylindrical block; 93. a piston; 94. connecting blocks; 95. a cylindrical groove; 96. a rotation knob; 10. An inverted T-shaped airway; 11. a handle; 12. an air tap; 13. and (5) sealing the cap.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1-3, a dust butterfly valve comprises a valve body 1, a first shaft sleeve 2 is communicated with the upper end side wall of the valve body 1, a first valve shaft 3 is inserted and rotatably connected in the first shaft sleeve 2, a valve plate 4 is fixedly connected with one end of the first valve shaft 3 positioned in the valve body 1, a second valve shaft 5 which is coaxial with the first valve shaft 3 is fixedly connected with one end side wall of the valve plate 4 far away from the first valve shaft 3, a second shaft sleeve 6 is communicated with one side wall of the valve body 1 far away from the first shaft sleeve 2, the second valve shaft 5 is inserted in the second shaft sleeve 6 and rotatably connected with the inner wall thereof, symmetrically arranged air bags 7 are fixedly connected with the outer circumferential side wall of the valve plate 4 positioned at two sides of the first valve shaft 3, a sliding cavity 8 is arranged in the first valve shaft 3, a piston device 9 is slidably arranged in the sliding cavity 8, an inverted T-shaped air duct, the both ends of keeping away from smooth chamber 8 of type of falling T air duct 10 set up with the lateral wall intercommunication of gasbag 7 respectively, the lateral wall fixedly connected with handle 11 of the first valve shaft 3 that is located the 2 outsides of primary shaft cover, setting through piston device 9 and gasbag 7, when closing the butterfly valve, pressurize to gasbag 7 in through piston device 9 and supply gas, make gasbag 7 inflation, thereby squeeze the gap between valve plate 4 and the valve body 1 and push down, reach sealed effect, the influence of having avoided traditional sealing rubber circle wearing and tearing and expend with heat and contract with cold makes the sealed not tight condition of butterfly valve take place.

As shown in fig. 2 and 3, the piston device 9 includes a threaded rod 91, one end of the threaded rod 91 penetrates through the top wall of the first valve shaft 3 and is in threaded connection with the top wall, one end of the threaded rod 91 located in the sliding cavity 8 is fixedly connected with a cylindrical block 92, a piston 93 is slidably connected in the sliding cavity 8, an upper side wall of the piston 93 is fixedly connected with a connecting block 94, a cylindrical groove 95 matched with the cylindrical block 92 is formed in the connecting block 94, the cylindrical block 92 is located in the cylindrical groove 95, one end of the threaded rod 91 away from the cylindrical block 92 is fixedly connected with a rotating button 96, and the rotating button 96 is rotated after the valve plate 4 is closed, so that the piston 93 is pushed to move in the sliding cavity 8 to extrude the gas in the sliding cavity 8 into the gas bag 7.

As shown in fig. 1-4, the air bag 7 is made of synthetic rubber, and the air bag 7 and the valve plate 4 are fixedly connected by rubber and metal adhesive, kemmoke, so that the air bag 7 made of synthetic rubber can be tightly attached to the valve plate 4, an annular air nozzle 12 is fixedly connected to an opening of the air bag 7 communicated with the inverted T-shaped air duct 10, the air nozzle 12 is inserted into the opening of the inverted T-shaped air duct 10, the air nozzle 12 enables the air bag 7 and the inverted T-shaped air duct 10 to be communicated and arranged, so that air can enter the air bag 7 through the piston device 9, a sealing cap 13 is fixedly connected to one end of the second valve shaft 5 away from the valve plate 4, a sealant is arranged at a junction of the first shaft sleeve 2 and the valve body 1, and the sealing rubber and the sealing cap 13 enable the butterfly valve.

The working principle is as follows: after rotating handle 11 and closing valve plate 4, the last knob 96 of rotating piston device 9, make threaded rod 91 remove in to smooth chamber 8, thereby promote piston 93 and remove, with the gas in smooth chamber 8 through the extrusion of type of falling T air duct 10 get into gasbag 7, the gap between gasbag 7 inflation extrusion valve plate 4 and the valve body 1, thereby make the butterfly valve sealed inseparabler, and in the same way, when the butterfly valve is opened to needs, reverse rotation knob 96 makes piston 93 keep away from valve plate 4 and remove thereby the gas release in gasbag 7, the butterfly valve can be opened through rotating handle 11 after gasbag 7 relaxs, it makes butterfly valve sealing performance improve to be provided with sealed glue and the setting up of sealed cap 13 in valve body 1 and first shaft housing 2 junction.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general 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 preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a dust butterfly valve, includes valve body (1), its characterized in that: the valve is characterized in that a first shaft sleeve (2) is communicated with the upper end side wall of the valve body (1), a first valve shaft (3) is inserted into the first shaft sleeve (2) and is connected with the first valve shaft (3) in a rotating mode, a valve plate (4) is fixedly connected with one end of the first valve shaft (3) in the valve body (1), a second valve shaft (5) which is coaxial with the first valve shaft (3) is fixedly connected with one end side wall of the valve plate (4) far away from the first shaft sleeve (2), a second shaft sleeve (6) is communicated with one side wall of the valve body (1) far away from the first shaft sleeve (2), the second valve shaft (5) is inserted into the second shaft sleeve (6) and is connected with the inner wall of the second shaft sleeve in a rotating mode, air bags (7) which are symmetrically arranged are fixedly connected with the side wall of the outer circumference of the valve plate (4) on two sides of the first valve shaft (3), a sliding cavity (, set up in valve plate (4) and slide chamber (8) intercommunication the type of falling T air vent (10) that set up, the both ends of keeping away from slide chamber (8) of type of falling T air vent (10) set up with the lateral wall intercommunication of gasbag (7) respectively, are located the first axle sleeve (2) outside the lateral wall fixedly connected with handle (11) of first valve shaft (3).

2. A dust butterfly valve in accordance with claim 1, wherein: piston device (9) include threaded rod (91), the one end of threaded rod (91) runs through the roof of first valve shaft (3) and rather than threaded connection, is located smooth chamber (8) the one end fixedly connected with cylindricality piece (92) of threaded rod (91), sliding connection has piston (93) in smooth chamber (8), the last lateral wall fixedly connected with connecting block (94) of piston (93), it has and cylindricality groove (95) of cylindricality piece (92) looks adaptation to have seted up in connecting block (94), cylindricality piece (92) are located cylindricality groove (95) and set up, the one end fixedly connected with knob (96) of cylindricality piece (92) are kept away from in threaded rod (91).

3. A dust butterfly valve in accordance with claim 1, wherein: the air bag (7) is made of synthetic rubber, and the air bag (7) and the valve plate (4) are fixedly connected by rubber and a metal adhesive, namely Kermoke.

4. A dust butterfly valve in accordance with claim 1, wherein: the air bag (7) is fixedly connected with an annular air nozzle (12) at an opening communicated with the inverted T-shaped air passage (10), and the air nozzle (12) is inserted into the opening of the inverted T-shaped air passage (10) to be arranged.

5. A dust butterfly valve in accordance with claim 1, wherein: one end of the second valve shaft (5) far away from the valve plate (4) is sleeved with a sealing cap (13) and is fixedly connected with the sealing cap.

6. A dust butterfly valve in accordance with claim 1, wherein: and a sealant is arranged at the junction of the first shaft sleeve (2) and the valve body (1).