阅读说明：本技术 一种防外漏自密封气动蝶阀 (Leakage-proof self-sealing pneumatic butterfly valve ) 是由 朱文涛 薛川 于 2021-09-29 设计创作，主要内容包括：本发明涉及气动蝶阀技术领域,尤其是一种防外漏自密封气动蝶阀,包括气动蝶阀本体,所述气动蝶阀本体的进水口和出水口通过法兰分别安装有第一安装水管和第二安装水管,所述第二安装水管的内部设有防外漏自密封机构。本方案通过在气动蝶阀的进水口和出水口的上分别加装第一安装水管和第二安装水管,第一安装水管和第二安装水管的内部分别设置防外漏自密封机构和防漏水密封机构,用于分别对气动蝶阀的进水口和出水口起到防漏和密封的作用,在气动蝶阀关闭时,防外漏自密封机构受到水压的作用而进行自封闭操作,防漏水密封机构通过圆形蝶板的转动将固定板和活动板密封处理,减少圆形蝶板所受水压,进而提升了气动蝶阀自身密封性能。(The invention relates to the technical field of pneumatic butterfly valves, in particular to an anti-leakage self-sealing pneumatic butterfly valve which comprises a pneumatic butterfly valve body, wherein a first mounting water pipe and a second mounting water pipe are respectively mounted at a water inlet and a water outlet of the pneumatic butterfly valve body through flanges, and an anti-leakage self-sealing mechanism is arranged inside the second mounting water pipe. This scheme is through installing first installation water pipe and second installation water pipe additional respectively on pneumatic butterfly valve's water inlet and delivery port, the inside of first installation water pipe and second installation water pipe sets up respectively prevents leaking self sealss mechanism and leak protection water seal mechanism outward, a water inlet and the delivery port for respectively to pneumatic butterfly valve play leak protection and sealed effect, when pneumatic butterfly valve closes, prevent leaking self sealss mechanism outward and receive hydraulic effect and carry out from the closure operation, leak protection water seal mechanism seals fixed plate and fly leaf through the rotation of circular butterfly plate and handles, reduce the water pressure that circular butterfly plate received, and then pneumatic butterfly valve self sealing performance has been promoted.)

1. The utility model provides a prevent outer hourglass self sealss pneumatic butterfly valve, includes pneumatic butterfly valve body (2), its characterized in that, first installation water pipe (1) and second installation water pipe (3) are installed respectively through the flange to the water inlet and the delivery port of pneumatic butterfly valve body (2), the inside of second installation water pipe (3) is equipped with prevents outer hourglass self sealss mechanism.

2. The leak-proof self-sealing pneumatic butterfly valve according to claim 1, wherein the leak-proof self-sealing mechanism comprises a fixed frame body (9), the fixed frame body (9) is installed inside the second installation water pipe (3) in a matching manner, and the inside of the fixed frame body (9) is provided with installation pipe fittings (11) which are arranged in a same central line; a plurality of connecting pieces (10) are installed between the outside of the installation pipe fitting (11) and the inside of the fixed frame body (9) through screws, a second rubber sealing ring (6) is bonded on the side face of the fixed frame body (9), a flow baffle (8) is placed on the side face of the second rubber sealing ring (6), a sliding rod (14) is installed on the side face of the flow baffle (8) through screws, one end of the sliding rod (14) penetrates through the installation pipe fitting (11) and extends into a water inlet of the pneumatic butterfly valve body (2), a fixing piece (13) is installed on the surface of the sliding rod (14) through screws, a plurality of sliding limiting mechanisms are arranged between the fixing piece (13) and the second installation water pipe (3), an inclined block (26) is installed at one end of the sliding rod (14) through screws, and the inclined block (26) corresponds to the position of a circular butterfly plate in the pneumatic butterfly valve body (2), the anti-leakage water sealing device is characterized in that an anti-leakage water sealing mechanism is arranged inside the first installation water pipe (1), the anti-leakage water sealing mechanism comprises a fixing plate (21), a fixing seat (31) and a fixing block (34), the fixing plate (21) is installed inside the first installation water pipe (1) in a matched mode, a plurality of first water outlet holes (22) which are arranged at equal angles are formed in the side face of the fixing plate (21), a first bearing (29) which is arranged coaxially is installed at the center of each first water outlet hole (22) in a penetrating mode, a fixing shaft (20) is connected to the inner ring of each first bearing (29) in a close-fitting and inserting mode, a movable plate (30) is installed at one end of each fixing shaft (20) through screws, a third rubber sealing ring (19) is arranged between the movable plate (30) and the fixing plate (21), the side face of the third rubber sealing ring (19) is bonded to the side face of the fixing plate (21), and the side face of the movable plate (30) is in contact with the side face of the third rubber sealing ring (19), the side surface of the movable plate (30) is provided with a plurality of second water outlet holes (37) which are arranged at equal angles, the distance between two adjacent first water outlet holes (22) is larger than the size of the first water outlet holes (22), the number, the size and the arrangement mode of the second water outlet holes (37) are the same as those of the first water outlet holes (22), one end of the fixed shaft (20) is provided with a second bevel gear (23) through a screw, the fixed seat (31) is installed in the first installation water pipe (1) through a screw, the top of the fixed seat (31) penetrates through the first installation water pipe and is provided with a second bearing (32), the inner ring of the second bearing (32) is tightly inserted with a rotating shaft (38), the surface of the rotating shaft (38) is fixedly sleeved with a gear (33), one end of the rotating shaft (38) is provided with a first bevel gear (18) through a screw, and the first bevel gear (18) is meshed with the second bevel gear (23), the fixing block (34) is mounted on the inner surface of the first mounting water pipe (1) through screws, one end of the fixing block (34) is provided with a limiting frame body (17) through screws, a rack (35) is inserted into the limiting frame body (17) in a sliding mode, the rack (35) is meshed with a gear (33), one end of the rack (35) is connected with the surface of a circular butterfly plate in the pneumatic butterfly valve body (2) through a transmission mechanism, the transmission mechanism comprises the pneumatic butterfly valve body (2), mounting shafts (36) penetrate through two ends of the pneumatic butterfly valve body (2), clamping pieces (15) are mounted at two ends of the two mounting shafts (36) through screws, and the two clamping pieces (15) are mounted at one end of the rack (35) and the surface of the circular butterfly plate through screws respectively; the number of the connecting pieces (10) is at least four, and the four connecting pieces (10) are arranged at equal angles.

3. The leakage-proof self-sealing pneumatic butterfly valve according to claim 2, wherein a plurality of third outlet holes (24) are formed in the surface of the connecting member (10), at least three of the third outlet holes (24) are arranged at equal intervals, and the third outlet holes (24) are elongated.

4. The leakage-proof self-sealing pneumatic butterfly valve according to claim 2, wherein the sliding limiting mechanism comprises a long bar block (5) and a sliding rod (25), one end of the sliding rod (25) is mounted on the outer portion of the fixing member (13) through a screw, the surface of the long bar block (5) is mounted on the inner portion of the second mounting water pipe (3) through a screw, the positions of the long bar block (5) and the sliding rod (25) correspond, a sliding groove (28) extending to the two ends of the long bar block (5) is formed in the surface of the long bar block, one end of the sliding rod (25) extends to the inner portion of the sliding groove (28), and the surface of the sliding rod (25) slides along the inner wall of the sliding groove (28).

5. The leakage-proof self-sealing pneumatic butterfly valve as claimed in claim 2, wherein a plurality of fourth outlet holes (27) are formed in the side surface of the inclined block (26), the fourth outlet holes (27) are rectangular, and at least eight of the fourth outlet holes (27) are arranged in an equidistant manner.

6. The leakage-proof self-sealing pneumatic butterfly valve according to claim 2, wherein a flow guide block (7) is mounted on the other side surface of the flow baffle (8) through a screw, and the flow guide block (7) is in a conical shape.

7. The leak-proof self-sealing pneumatic butterfly valve according to claim 2, wherein at least six first water outlet holes (22) are provided, and the first water outlet holes (22) are rectangular.

8. The leak-proof self-sealing pneumatic butterfly valve according to claim 2, wherein the clip (15) is concave, and the mounting shaft (36) and the connecting rod (16) are located at one end inside the clip (15).

9. The leakage-proof self-sealing pneumatic butterfly valve according to claim 2, wherein the first rubber sealing rings (4) are bonded to the side faces of the flanges of the first installation water pipe (1) and the second installation water pipe (3), and the side faces of the two first rubber sealing rings (4) are respectively contacted with the side faces of the flanges at two ends of the pneumatic butterfly valve body (2).

10. The leakage-proof self-sealing pneumatic butterfly valve according to claim 2, wherein the sliding rod (14) is sleeved with a compression spring (12), and two ends of the compression spring (12) are respectively connected with the pipe fitting (11) and the fixing member (13).

Technical Field

The invention relates to the technical field of pneumatic butterfly valves, in particular to an anti-leakage self-sealing pneumatic butterfly valve.

Background

The pneumatic butterfly valve consists of a pneumatic actuator and a butterfly valve. The pneumatic butterfly valve is opened and closed by a circular butterfly plate rotating along with a valve rod to realize the pneumatic valve which starts to act, is mainly used as a cut-off valve, can also be designed to have the function of adjusting or adjusting a section valve, and is increasingly used on low-pressure large-caliber and medium-caliber pipelines.

Among the prior art, the in-process that the pneumatic butterfly valve was closing, the pneumatic butterfly valve does not possess self sealss function for the circular butterfly plate among the pneumatic butterfly valve receives the pressure of water, and the circular butterfly plate is after long-time pressurized, and its self seal assembly is impaired, makes aqueous solution go out from impaired seal assembly gap and flows out among the pneumatic butterfly valve, and then has damaged the leak protection performance of pneumatic butterfly valve, is unfavorable for the normal work of pneumatic butterfly valve.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an anti-leakage self-sealing pneumatic butterfly valve.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a leakage-proof self-sealing pneumatic butterfly valve comprises a pneumatic butterfly valve body, wherein a first installation water pipe and a second installation water pipe are respectively installed at a water inlet and a water outlet of the pneumatic butterfly valve body through flanges, a leakage-proof self-sealing mechanism is arranged inside the second installation water pipe and comprises a fixed frame body, the fixed frame body is installed inside the second installation water pipe in a matched mode, an installation pipe arranged at the same center line is arranged inside the fixed frame body, a plurality of connecting pieces are installed between the outside of the installation pipe and the inside of the fixed frame body through screws, a second rubber sealing ring is bonded on the side face of the fixed frame body, a flow blocking plate is placed on the side face of the second rubber sealing ring, a sliding rod is installed on the side face of the flow blocking plate through screws, one end of the sliding rod penetrates through the installation pipe and extends into the water inlet of the pneumatic butterfly valve body, the surface of the sliding rod is provided with a fixing part through a screw, a plurality of sliding limiting mechanisms are arranged between the fixing part and the second installation water pipe, one end of the sliding rod is provided with an inclined block through a screw, the inclined block corresponds to a circular butterfly plate in the pneumatic butterfly valve body in position, a water leakage prevention sealing mechanism is arranged in the first installation water pipe and comprises a fixing plate, a fixing seat and a fixing block, the fixing plate is installed in the first installation water pipe in a matched mode, the side face of the fixing plate is provided with a plurality of first water outlet holes which are arranged at equal angles, first bearings which are arranged coaxially are arranged at the centers of the first water outlet holes in a penetrating mode, inner rings of the first bearings are tightly matched and inserted with fixing shafts, one end of each fixing shaft is provided with a movable plate through a screw, and a third rubber sealing ring is arranged between the movable plate and the fixing plate, the side surface of the third rubber sealing ring is bonded to the side surface of the fixed plate, the side surface of the movable plate is in contact with the side surface of the third rubber sealing ring, the side surface of the movable plate is provided with a plurality of second water outlet holes which are arranged at equal angles, the distance between every two adjacent first water outlet holes is larger than the size of the first water outlet holes, the number, the size and the arrangement mode of the second water outlet holes are the same as those of the first water outlet holes, one end of the fixed shaft is provided with a second bevel gear through a screw, the fixed seat is arranged in the first installation water pipe through a screw, the top of the fixed seat is provided with a second bearing through the screw, the inner ring of the second bearing is tightly inserted and connected with a rotating shaft, the surface of the rotating shaft is fixedly sleeved with a gear, one end of the rotating shaft is provided with a first bevel gear through a screw, the first bevel gear is meshed with the second bevel gear, and the fixed block is arranged on the inner surface of the first installation water pipe through a screw, the one end of fixed block has spacing framework through the screw mounting, the inside of spacing framework slides and pegs graft and has the rack, rack and gear engagement, connect through drive mechanism between the circular butterfly plate surface in the one end of rack and the pneumatic butterfly valve body, drive mechanism includes the pneumatic butterfly valve body, the both ends of pneumatic butterfly valve body all run through and install the installation axle, two the both ends of installation axle all have the fastener, two through the screw mounting respectively the fastener passes through the screw and installs the surface at the one end of rack and circular butterfly plate.

Preferably, the connecting pieces are at least four, and the four connecting pieces are arranged at equal angles.

Preferably, the surface of the connecting piece is provided with a plurality of third water outlet holes, the third water outlet holes are at least three and are arranged at equal intervals, and the third water outlet holes are in a long strip shape.

Preferably, the slip stop gear includes rectangular piece and slide bar, the one end of slide bar is passed through the screw and is installed the outside at the mounting, the surface of rectangular piece is passed through the screw and is installed the inside at second installation water pipe, the position of rectangular piece and slide bar corresponds, the spout that extends to its both ends is seted up on the surface of rectangular piece, the one end of slide bar extends to the inside of spout, makes the surface of slide bar slide along the inner wall of spout.

Preferably, a plurality of fourth apopores have been seted up to the side of sloping block, the fourth apopore is the rectangle, the fourth apopore is equipped with eight at least and equidistance arranges.

Preferably, a flow guide block is mounted on the other side surface of the spoiler through a screw, and the flow guide block is in a conical shape.

Preferably, the number of the first water outlet holes is at least six, and the first water outlet holes are rectangular.

Preferably, the clamping piece is concave, and the installation axle and the connecting rod are all located inside the clamping piece.

Preferably, the side surfaces of the flanges on the first installation water pipe and the second installation water pipe are respectively bonded with a first rubber sealing ring, and the side surfaces of the first rubber sealing rings are respectively contacted with the side surfaces of the flanges at two ends of the pneumatic butterfly valve body.

Preferably, the surface of the sliding rod is sleeved with a compression spring, and two ends of the compression spring are respectively connected with the pipe fitting and the fixing piece.

Compared with the prior art, the invention has the following beneficial effects:

this scheme is through installing first installation water pipe and second installation water pipe additional respectively on pneumatic butterfly valve's water inlet and delivery port, the inside of first installation water pipe and second installation water pipe sets up respectively prevents leaking self sealss mechanism and leak protection water seal mechanism, a water inlet and the delivery port for respectively to pneumatic butterfly valve play leak protection and sealed effect, the circular butterfly plate has been promoted and has been in the stability between preventing leaking self sealss mechanism and the leak protection water seal mechanism, when pneumatic butterfly valve closed, prevent leaking self sealss mechanism and receive hydraulic effect and carry out from the closure operation, leak protection water seal mechanism carries out the sealed processing of fixed plate and fly leaf through the rotation of circular butterfly plate, reduce the water pressure that circular butterfly plate received, and then pneumatic butterfly valve self leak protection water and sealing performance have been promoted.

Drawings

FIG. 1 is an isometric view of an anti-leak self-sealing pneumatic butterfly valve of the present invention;

FIG. 2 is a cross-sectional view of an anti-leak self-sealing pneumatic butterfly valve of the present invention;

FIG. 3 is a schematic view of the internal structure of a second installation water pipe of the anti-leakage self-sealing pneumatic butterfly valve of the invention;

FIG. 4 is a schematic view of a connection structure of a fixing member and a sliding limiting mechanism of the anti-leakage self-sealing pneumatic butterfly valve of the present invention;

FIG. 5 is a schematic view of a connection structure between a spoiler and a fixed frame of the anti-leakage self-sealing pneumatic butterfly valve according to the present invention;

FIG. 6 is a schematic view of the internal structure of a first installation water pipe of the anti-leakage self-sealing pneumatic butterfly valve of the invention;

FIG. 7 is a schematic view of a connection structure of a fixing plate and a second bevel gear of the leakage-proof self-sealing pneumatic butterfly valve of the invention;

FIG. 8 is a schematic view of a connection structure of a fixed plate and a movable plate of the anti-leakage self-sealing pneumatic butterfly valve of the present invention;

FIG. 9 is a schematic view of a connection structure of a rack, a gear, a first bevel gear and a second bevel gear of the anti-leakage self-sealing pneumatic butterfly valve according to the present invention;

fig. 10 is a schematic structural view of a transmission mechanism of the anti-leakage self-sealing pneumatic butterfly valve.

In the figure: the pneumatic butterfly valve comprises a first installation water pipe 1, a pneumatic butterfly valve body 2, a second installation water pipe 3, a first rubber sealing ring 4, a long block 5, a second rubber sealing ring 6, a flow guide block 7, a spoiler 8, a fixed frame 9, a connecting piece 10, an installation pipe fitting 11, a compression spring 12, a fixing piece 13, a sliding rod 14, a clamping piece 15, a connecting rod 16, a limiting frame 17, a first bevel gear 18, a third rubber sealing ring 19, a fixed shaft 20, a fixed plate 21, a first water outlet 22, a second bevel gear 23, a third water outlet 24, a sliding rod 25, an inclined block 26, a fourth water outlet 27, a sliding chute 28, a first bearing 29, a movable plate 30, a fixed seat 31, a second bearing 32, a gear 33, a fixed block 34, a rack 35, an installation shaft 36, a second water outlet 37 and a rotating shaft 38.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1-10, an anti-leakage self-sealing pneumatic butterfly valve comprises a pneumatic butterfly valve body 2, a first installation water pipe 1 and a second installation water pipe 3 are respectively installed at a water inlet and a water outlet of the pneumatic butterfly valve body 2 through flanges, an anti-leakage self-sealing mechanism is arranged inside the second installation water pipe 3, the anti-leakage self-sealing mechanism comprises a fixed frame 9, the fixed frame 9 is installed inside the second installation water pipe 3 in a matching manner, an installation pipe 11 arranged at the same center line is arranged inside the fixed frame 9, a plurality of connecting pieces 10 are installed between the outside of the installation pipe 11 and the inside of the fixed frame 9 through screws, a second rubber sealing ring 6 is bonded on the side surface of the fixed frame 9, a flow baffle 8 is placed on the side surface of the second rubber sealing ring 6, a sliding rod 14 is installed on the side surface of the flow baffle 8 through screws, one end of the sliding rod 14 penetrates through the installation pipe 11 and extends into the water inlet of the pneumatic butterfly valve body 2, the surface of slide bar 14 has mounting 13 through the screw installation, be equipped with a plurality of slip stop gears between mounting 13 and the second installation water pipe 3, the sloping block 26 is installed through the screw to the one end of slide bar 14, the sloping block 26 corresponds with the circular butterfly plate position in the pneumatic butterfly valve body 2, when the pneumatic butterfly valve is opened, the circular butterfly plate rotates, the circular butterfly plate contacts with the inclined surface of sloping block 26 in the rotation process, make the surface of circular butterfly plate slide at the inclined surface of sloping block 26, along with the rotation of circular butterfly plate, the circular butterfly plate promotes sloping block 26, sloping block 26 promotes slide bar 14, slide bar 14 promotes spoiler 8, after spoiler 8 separates from second rubber seal 6, there is certain distance between spoiler 8 and the second rubber seal 6, be convenient for aqueous solution to flow into the inside of second installation water pipe 3 from this department. When the pneumatic butterfly valve is closed, the circular butterfly plate reversely resets and rotates, and the spoiler 8 moves towards the second rubber sealing ring 6 after receiving water pressure, so that the spoiler 8 reversely pushes the sliding rod 14, and after the spoiler 8 is tightly contacted with the side surface of the second rubber sealing ring 6, the connection between the spoiler 8 and the fixed frame 9 is fixed, and the sealing performance between the spoiler 8 and the fixed frame 9 is improved. The arrangement of the connecting pieces 10 improves the stability of connection between the installation pipe fitting 11 and the fixed frame 9, and further improves the stability of the spoiler 8 in the sliding process.

The connecting pieces 10 are at least four, and the four connecting pieces 10 are arranged at equal angles. A plurality of third apopores 24 have been seted up on the surface of connecting piece 10, and third apopore 24 is equipped with three and equidistance and arranges at least, and third apopore 24 is rectangular form. The setting of third apopore 24, the circulation of the water solution of being convenient for promotes the speed of water solution circulation in second installation water pipe 3. A plurality of fourth apopores 27 have been seted up to the side of sloping block 26, and fourth apopore 27 is the rectangle, and fourth apopore 27 is equipped with eight at least and equidistance and arranges. The fourth outlet opening 27 functions as the third outlet opening 24.

The sliding limiting mechanism comprises a long block 5 and a sliding rod 25, one end of the sliding rod 25 is mounted on the outer portion of the fixing piece 13 through a screw, the surface of the long block 5 is mounted in the second mounting water pipe 3 through a screw, the long block 5 corresponds to the sliding rod 25 in position, a sliding groove 28 extending to two ends of the long block 5 is formed in the surface of the long block 5, one end of the sliding rod 25 extends to the sliding groove 28, and the surface of the sliding rod 25 slides along the inner wall of the sliding groove 28. The surface of the sliding rod 14 is sleeved with a compression spring 12, and two ends of the compression spring 12 are respectively connected with the pipe fitting 11 and the fixing piece 13. When the fixing piece 13 moves synchronously through the sliding rod 25, the fixing piece 13 pushes the compression spring 12, the length of the compression spring 12 is contracted, the compression spring 12 pushes the fixing piece 13 through self acting force, when the fixing piece 13 is not under the external force condition, the fixing piece 13 pushes the fixing piece 13 to reset through the self acting force of the compression spring 12, the fixing piece 13 is convenient to push the sliding rod 25 to reset, and the spoiler 8 and the second rubber sealing ring 6 are further convenient to be in sealing contact.

The other side surface of the spoiler 8 is provided with a flow guide block 7 through a screw, and the flow guide block 7 is in a conical shape. The surface of the flow guide block 7 is inclined, so that the resistance between the water flow and the surface of the flow guide block 7 is reduced.

The inside of the first installation water pipe 1 is provided with a water leakage prevention sealing mechanism, the water leakage prevention sealing mechanism comprises a fixed plate 21, a fixed seat 31 and a fixed block 34, the fixed plate 21 is installed inside the first installation water pipe 1 in a matching manner, the side surface of the fixed plate 21 is provided with a plurality of first water outlet holes 22 which are arranged at equal angles, the center of each first water outlet hole 22 is provided with a first bearing 29 which is arranged coaxially in a penetrating manner, the inner ring of each first bearing 29 is tightly inserted with a fixed shaft 20, one end of each fixed shaft 20 is provided with a movable plate 30 through a screw, a third rubber sealing ring 19 is arranged between each movable plate 30 and the corresponding fixed plate 21, the side surface of each third rubber sealing ring 19 is bonded to the side surface of the corresponding fixed plate 21, the side surface of each movable plate 30 is in contact with the side surface of the corresponding third rubber sealing ring 19, the side surface of each movable plate 30 is provided with a plurality of second water outlet holes 37 which are arranged at equal angles, and the distance between every two adjacent first water outlet holes 22 is larger than the size of the corresponding first water outlet hole 22, the number, size and arrangement of the second water outlet holes 37 are the same as those of the first water outlet holes 22, one end of the fixing shaft 20 is provided with a second bevel gear 23 through a screw, the fixing seat 31 is installed inside the first installation water pipe 1 through a screw, the top of the fixing seat 31 is provided with a second bearing 32 through which the top penetrates, the inner ring of the second bearing 32 is tightly inserted with a rotating shaft 38, the surface of the rotating shaft 38 is fixedly sleeved with a gear 33, one end of the rotating shaft 38 is provided with a first bevel gear 18 through a screw, the first bevel gear 18 is engaged with the second bevel gear 23, the fixing block 34 is installed on the inner surface of the first installation water pipe 1 through a screw, one end of the fixing block 34 is provided with a limiting frame 17 through a screw, the inside of the limiting frame 17 is slidably inserted with a rack 35, the rack 35 is engaged with the gear 33, one end of the rack 35 is connected with the surface of a circular butterfly plate in the pneumatic butterfly valve body 2 through a transmission mechanism, the transmission mechanism comprises a pneumatic butterfly valve body 2, mounting shafts 36 are installed at two ends of the pneumatic butterfly valve body 2 in a penetrating mode, clamping pieces 15 are installed at two ends of each mounting shaft 36 through screws, and the two clamping pieces 15 are installed at one end of the rack 35 and the surface of the circular butterfly plate through screws respectively. The clamping piece 15 is concave, and one end of the mounting shaft 36 and one end of the connecting rod 16 are both positioned in the clamping piece 15. When the pneumatic butterfly valve is opened, the circular butterfly plate rotates and simultaneously drives the clamping piece 15 connected with the circular butterfly plate to synchronously rotate, the clamping piece 15 drives the mounting shaft 36 connected with the clamping piece 15 to synchronously rotate, the mounting shaft 36 drives the connecting rod 16 to move and simultaneously rotate on the surface of the connecting rod, so that the other end of the connecting rod 16 can conveniently rotate and simultaneously drive the other mounting shaft 36 to move, the other mounting shaft 36 drives the other clamping piece 15 to synchronously move, the other clamping piece 15 pulls the rack 35 to slide in the limiting frame body 17, torque force is applied to the gear 33 along with the sliding of the rack 35, the gear 33 applies acting force to the rotating shaft 38, the rotating shaft 38 rotates in the fixed seat 31 through the second bearing 32, so that the rotating shaft 38 drives the first bevel gear 18 to rotate, the first bevel gear 18 drives the second bevel gear 23 to rotate, and because the first bevel gear 1 and the second bevel gear 23 are vertically arranged, so that the first bevel gear 1 drives the second bevel gear 23 to rotate vertically in the horizontal rotation process, the second bevel gear 23 drives the fixed shaft 20 to rotate in the fixed plate 21 through the first bearing 29, and simultaneously the fixed shaft 20 drives the movable plate 30 to rotate synchronously, so that the second water outlet 37 on the movable plate 30 corresponds to the first water outlet 22 in position, and the aqueous solution can flow out from the second water outlet 37 and the first water outlet 22. When pneumatic butterfly valve closed, the circular butterfly plate passes through drive mechanism and promotes rack 35, rack 35 beats 23 antiport of gear, and then makes things convenient for second bevel gear 23 antiport in vertical direction for rotate second apopore 37 on the fly leaf 30 and 22 dislocation sets of first apopore, be used for playing the effect that blocks to second apopore 37 and first apopore 22, be used for accomplishing the leak protection water effect to first installation water pipe 1.

The number of the first water outlet holes 22 is at least six, and the first water outlet holes 22 are rectangular. The first outlet opening 22 and thus the second outlet opening 37 all increase the rate of circulation of the aqueous solution in the first installation water pipe 1.

The side faces of the flanges on the first installation water pipe 1 and the second installation water pipe 3 are respectively bonded with a first rubber sealing ring 4, and the side faces of the two first rubber sealing rings 4 are respectively contacted with the side faces of the flanges at the two ends of the pneumatic butterfly valve body 2. The arrangement of the first rubber sealing ring 4 increases the connection tightness between the two flanges, prevents the water solution from flowing out between the two flanges, and further improves the sealing performance of the device.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.