CN215720967U

CN215720967U - Pneumatic ball valve for sewage discharge

Info

Publication number: CN215720967U
Application number: CN202122114869.7U
Authority: CN
Inventors: 胡小鹏
Original assignee: SHENYI AUTOMATIC CONTROLLING VALVE APPARATUS CO Ltd
Current assignee: SHENYI AUTOMATIC CONTROLLING VALVE APPARATUS CO Ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-02-01
Anticipated expiration: 2031-09-02

Abstract

The utility model discloses a pneumatic ball valve for sewage disposal, which comprises a valve body, a valve rod, a ball body and a pneumatic actuator, wherein an inlet flow passage and an outlet flow passage are arranged at two ends of the valve body; still including setting up the filtering component in the inlet flow way, filtering component includes the filter screen, the backup pad and presses the pipe, is provided with the support flange in the inlet flow way, presses pipe threaded connection in inlet flow way the inner and compresses tightly the edge of filter screen and backup pad on the support flange, and a plurality of discharge holes have evenly been seted up on the backup pad surface, is equipped with the filtrate groove in the inlet flow way, and the bottom in filtrate groove is equipped with the screw hole, and threaded connection has the flowing back screw on the screw hole. The utility model can effectively protect the sealing surface of the valve seat and the ball body and avoid the leakage of the valve.

Description

Pneumatic ball valve for sewage discharge

Technical Field

The utility model relates to the technical field of valves, in particular to a pneumatic ball valve for sewage disposal.

Background

Ball valves come out in the 50 th of the 20 th century, and with the rapid development of science and technology and the continuous improvement of production processes and product structures, the ball valves have rapidly developed into a main valve class in short 40 years. In the developed countries of western industry, the use of ball valves is continuously rising year by year, and plays a very important role in national economy, the ball valves have the action of rotating 90 degrees, the cock body is a sphere, a circular through hole or a channel passes through the axis of the sphere, the ball valves are mainly used for cutting, distributing and changing the flowing direction of media in pipelines, and in China, the ball valves are widely applied to the industries of mechanical manufacturing, municipal pollution discharge, steel production and the like.

The pneumatic ball valve for pollution discharge is one of ball valves, is mainly used for pollution discharge work in production and application, is mostly simpler in the structure of the pollution discharge ball valve in the existing market, and can be completed by opening the valve by utilizing the pneumatic actuator when in use. Because the blowdown ball valve has large granule impurity in the use, in the inside medium, large granule impurity can lead to the fact great damage to the sealed face of disk seat and spheroid, destroys the leakproofness of valve very easily, causes the leakage of valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pneumatic ball valve for sewage drainage, which can effectively protect the sealing surface of a valve seat and a ball body and ensure the matching sealing performance between the valve seat and the ball body, thereby avoiding the leakage of the valve.

In order to achieve the purpose, the utility model provides the following technical scheme: the blowdown pneumatic ball valve comprises a valve body, a valve rod, a ball body and a pneumatic actuator, wherein an inlet flow passage and an outlet flow passage are arranged at two ends of the valve body, a flow passing cavity is arranged between the inlet flow passage and the outlet flow passage, the ball body is rotatably arranged in the flow passing cavity, a first valve seat which is in sealing fit with the ball body is arranged at the position of the flow passing cavity at the inner end of the inlet flow passage, a second valve seat which is in sealing fit with the ball body is arranged at the position of the flow passing cavity at the inner end of the outlet flow passage, the valve rod penetrates through a valve neck of the valve body, the inner end of the valve rod is in linkage connection with the ball body, and the outer end of the valve rod is in linkage connection with the pneumatic actuator; still including setting up the filtering component in the import runner, filtering component includes filter screen, backup pad and presses the pipe, be provided with the support flange along circumference in the import runner, press pipe threaded connection to import runner inner and compress tightly the edge of filter screen and backup pad on the support flange, a plurality of discharge orifices have evenly been seted up on the backup pad surface, the filter solution groove has been seted up along circumference in the position that the import runner is close to the support flange outer end, the screw hole that extends to the outside is seted up to the bottom in filter solution groove, threaded connection has the flowing back screw on the screw hole.

Through adopting above-mentioned technical scheme, set up filtering component in the inlet flow channel and filter the medium, the large granule impurity in the medium can be by the filter screen separation and subside in the filtrate groove to avoided large granule impurity to produce the damage to disk seat and spheroidal sealed face, can guarantee the leakproofness of complex between disk seat and the spheroid, thereby avoided the valve to take place to leak. When the filter is cleaned regularly, the waste liquid in the filtrate tank can be discharged only by screwing out the liquid discharge screw, and the operation is very convenient. In addition, because the filtering component has a simple structure, the installation of the filtering component can be completed only by pressing the pressure pipe into the inner end of the inlet flow passage and pressing the edges of the filter screen and the support plate on the support flange, and the assembly in the early stage and the maintenance operation in the later stage are greatly facilitated.

The utility model is further arranged that one end of the supporting flange close to the filtrate tank is provided with a guide inclined surface inclined towards the direction of the filtrate tank.

Through adopting above-mentioned technical scheme, can guide the filtrate groove with large granule impurity in, avoid large granule impurity to adhere to on supporting flange and pile up.

The utility model is further set that a first mounting groove is arranged at the position of the overflowing cavity, which is positioned at the inner end of the inlet runner, the first valve seat is in interference fit with the first mounting groove, a second mounting groove is arranged at the position of the overflowing cavity, which is positioned at the inner end of the outlet runner, the second valve seat is in interference fit with the second mounting groove, and the first valve seat and the second valve seat are both made of polytetrafluoroethylene materials.

Through adopting above-mentioned technical scheme, the installation of first disk seat and second disk seat is very convenient to the fastness is good.

The utility model is further provided that the pressing pipe is provided with a pressing flange extending towards the periphery, and the first valve seat is provided with a pressing groove matched with the pressing flange.

Through adopting above-mentioned technical scheme, when screwing and pressing the pipe, press the flange that compresses tightly on the pipe and can compress tightly first disk seat, can not only promote the steadiness of first disk seat installation, can show moreover and promote the leakproofness between first disk seat and the first mounting groove.

The utility model is further arranged in that a plurality of push plates are uniformly arranged on the inner periphery of the pressure pipe, and the push plates extend along the radial direction.

Through adopting above-mentioned technical scheme, the application of force is convenient for carry out the rotation operation in pressing the pipe in the operation push pedal.

The utility model is further provided that a sealing gasket is clamped between the screw head of the liquid discharge screw and the outer wall of the valve body.

Through adopting above-mentioned technical scheme, can show the leakproofness that promotes the flowing back screw installation, avoid inside medium to leak from the clearance between flowing back screw and the screw hole.

The utility model is further arranged in that a first positioning convex rib which extends along the circumferential direction and has a semicircular section is arranged on the inner wall of the first mounting groove, the first positioning convex rib is protruded towards the direction of the joint part of the first valve seat and the ball body, and a first positioning concave part matched with the first positioning convex rib is arranged on the first valve seat; and a second positioning convex rib which extends along the circumferential direction and has a semicircular section is arranged on the inner wall of the second mounting groove, the second positioning convex rib is protruded towards the direction of the joint part of the second valve seat and the ball body, and a second positioning concave part which is matched with the second positioning convex rib is arranged on the second valve seat.

Through adopting above-mentioned technical scheme, can show between promotion first valve seat and the spheroid and the leakproofness of cooperation between second valve seat and the spheroid.

The valve body further comprises a sealing assembly, the outer end of the valve neck of the valve body is provided with a sealing groove coaxial with the valve rod, the sealing assembly comprises a packing set, a packing press ring and a packing gland, the packing set is pressed in the sealing groove by the packing press ring, the packing gland abuts against the packing press ring, and the packing gland is in locking connection with the valve neck of the valve body through a locking bolt.

Through adopting above-mentioned technical scheme, can guarantee the leakproofness between valve rod and the valve neck, avoid inside medium to leak to external world from the clearance between the two.

The utility model is further provided that a disc spring is clamped between the packing press ring and the packing gland.

By adopting the technical scheme, the pretightening force of the belleville spring can be changed by adjusting the locking bolt under the condition that the pneumatic actuator is not detached, so that the sealing performance of the packing set can be adjusted.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of the portion B in FIG. 1;

fig. 4 is a schematic structural view of the seal assembly of the present invention.

In the figure: 1. a valve body; 2. a valve stem; 3. a sphere; 4. a pneumatic actuator; 5. an inlet flow channel; 6. an outlet flow passage; 7. a flow-through chamber; 8. a first valve seat; 9. a second valve seat; 10. a filter assembly; 11. filtering with a screen; 12. a support plate; 13. pressing a pipe; 14. a support flange; 15. an overflowing hole; 16. a filtrate tank; 17. a threaded hole; 18. a liquid discharge screw; 19. a guide slope; 20. a first mounting groove; 21. a second mounting groove; 22. a compression flange; 23. a compaction groove; 24. pushing the plate; 25. a gasket; 26. a first positioning convex rib; 27. a first positioning recess; 28. a second positioning convex rib; 29. a second positioning recess; 30. a seal assembly; 31. a sealing groove; 32. a filler group; 33. packing and pressing a ring; 34. a packing gland; 35. locking the bolt; 36. a disc spring; 37. and (4) a valve neck.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): the utility model provides a pneumatic ball valve for sewage disposal, which is shown in the attached figures 1-4 and comprises a valve body 1, a valve rod 2, a ball body 3 and a pneumatic actuator 4, wherein an inlet flow passage 5 and an outlet flow passage 6 are arranged at two ends of the valve body 1, a flow passing cavity 7 is arranged between the inlet flow passage 5 and the outlet flow passage 6, the ball body 3 is rotatably arranged in the flow passing cavity 7, a first valve seat 8 which is in sealing fit with the ball body 3 is arranged at the position of the flow passing cavity 7 at the inner end of the inlet flow passage 5, a second valve seat 9 which is in sealing fit with the ball body 3 is arranged at the position of the flow passing cavity 7 at the inner end of the outlet flow passage 6, the valve rod 2 penetrates through a valve neck 37 of the valve body 1, the inner end of the valve rod 2 is in linkage connection with the ball body 3, and the outer end of the valve rod 2 is in linkage connection with the pneumatic actuator 4; still including setting up the filter component 10 in the inlet flow path 5, filter component 10 includes filter screen 11, backup pad 12 and presses pipe 13, be provided with support flange 14 along circumference in the inlet flow path 5, press pipe 13 threaded connection in inlet flow path 5 the inner and compress tightly the edge of filter screen 11 and backup pad 12 on support flange 14, a plurality of discharge orifice 15 have evenly been seted up on backup pad 12 surface, inlet flow path 5 has been close to the position of support flange 14 outer end and has been seted up filtrate groove 16 along circumference, and the round chamfer is all done at filtrate groove 16's both ends and is handled, the screw hole 17 that extends to the outside is seted up to filtrate groove 16's bottom, threaded connection has flowing back screw 18 on the screw hole 17. Set up filtering component 10 in inlet flow channel 5 and filter the medium, the large granule impurity in the medium can be by the separation of filter screen 11 and subsides in filtrate groove 16 to avoided large granule impurity to produce the damage to the sealed face of disk seat and spheroid 3, can guarantee the leakproofness of cooperation between disk seat and the spheroid 3, thereby avoided the valve to take place to leak. When the filter is cleaned regularly, the waste liquid in the filtrate tank 16 can be discharged only by screwing out the liquid discharge screw 18, and the operation is very convenient. In addition, because the structure of the filtering component 10 is simple, the installation of the filtering component 10 can be completed only by screwing the pressing pipe 13 into the inner end of the inlet flow passage 5 and pressing the edges of the filter screen 11 and the supporting plate 12 onto the supporting flange 14, thereby greatly facilitating the assembly in the early stage and the maintenance operation in the later stage.

As shown in FIG. 2, the end of the support flange 14 close to the filtrate tank 16 is provided with a guide slope 19 inclined toward the filtrate tank 16. The guide slope 19 can guide large particle impurities into the filtrate tank 16, and prevent the large particle impurities from adhering and accumulating on the support flange 14.

As shown in fig. 2 and fig. 3, a first mounting groove 20 is formed in a position, at the inner end of the inlet flow channel 5, of the overflowing cavity 7, a first valve seat 8 is in interference fit with the first mounting groove 20, a second mounting groove 21 is formed in a position, at the inner end of the outlet flow channel 6, of the overflowing cavity 7, a second valve seat 9 is in interference fit with the second mounting groove 21, and the first valve seat 8 and the second valve seat 9 are made of polytetrafluoroethylene materials. The first valve seat 8 and the second valve seat 9 are very convenient to install and have good firmness.

As shown in fig. 2, the pressing pipe 13 is provided with a pressing flange 22 extending to the outer periphery, the pressing flange 22 and the pressing pipe 13 are of an integral structure, and the first valve seat 8 is provided with a pressing groove 23 engaged with the pressing flange 22. When the pressure pipe 13 is screwed, the pressing flange 22 on the pressure pipe 13 can press the first valve seat 8, so that the installation stability of the first valve seat 8 can be improved, and the sealing performance between the first valve seat 8 and the first installation groove 20 can be obviously improved.

As shown in fig. 1, a plurality of push plates 24 are uniformly arranged on the inner periphery of the pressing pipe 13, the push plates 24 extend in the radial direction, and the push plates 24 are applied with force to facilitate the rotating operation of the pressing pipe 13.

As shown in fig. 2, a sealing gasket 25 is interposed between the screw head of the drain screw 18 and the outer wall of the valve body 1. The design can obviously improve the installation tightness of the liquid drainage screw 18 and avoid the leakage of internal media from the gap between the liquid drainage screw 18 and the threaded hole 17.

As shown in fig. 2 and fig. 3, a first positioning convex rib 26 which extends along the circumferential direction and has a semicircular cross section is arranged on the inner wall of the first mounting groove 20, the first convex rib and the valve body 1 are of an integral structure, the first positioning convex rib 26 protrudes towards the direction of the joint part of the first valve seat 8 and the ball body 3, and a first positioning concave part 27 which is matched with the first positioning convex rib 26 is arranged on the first valve seat 8; and a second positioning convex rib 28 which extends along the circumferential direction and has a semicircular section is arranged on the inner wall of the second mounting groove 21, the second positioning convex rib 28 protrudes towards the direction of the joint part of the second valve seat 9 and the ball body 3, and a second positioning concave part 29 which is matched with the second positioning convex rib 28 is arranged on the second valve seat 9. This design enables to significantly improve the tightness of the fit between the first seat 8 and the ball 3 and between the second seat 9 and the ball 3.

As shown in fig. 1 and fig. 4, the sealing assembly 30 is further included, a sealing groove 31 coaxial with the valve rod 2 is formed in the outer end of the valve neck 37 of the valve body 1, the sealing assembly 30 includes a packing set 32, a packing press ring 33 and a packing gland 34, the packing set 32 is pressed in the sealing groove 31 by the packing press ring 33, the packing gland 34 abuts against the packing press ring 33, and the packing gland 34 is in locking connection with the valve neck 37 of the valve body 1 through a locking bolt 35. The design can ensure the sealing performance between the valve rod 2 and the valve neck 37, and the internal medium is prevented from leaking to the outside from the gap between the valve rod and the valve neck.

As shown in fig. 2, a disc spring 36 is interposed between the packing ring 33 and the packing gland 34. The design can realize the change of the pretightening force of the belleville spring by adjusting the locking bolt 35 under the condition that the pneumatic actuator 4 is not disassembled, thereby realizing the adjustment of the sealing performance of the packing group 32.

Claims

1. A blow-off pneumatic ball valve comprises a valve body (1), a valve rod (2), a ball body (3) and a pneumatic actuator (4), an inlet flow passage (5) and an outlet flow passage (6) are arranged at two ends of the valve body (1), a flow passing cavity (7) is arranged between the inlet flow passage (5) and the outlet flow passage (6), the ball body (3) is rotatably arranged in the overflowing cavity (7), a first valve seat (8) which is in sealing fit with the ball body (3) is arranged at the position of the overflowing cavity (7) which is positioned at the inner end of the inlet flow channel (5), a second valve seat (9) which is in sealing fit with the ball body (3) is arranged at the position of the overflowing cavity (7) which is positioned at the inner end of the outlet flow channel (6), the valve rod (2) penetrates through a valve neck (37) of the valve body (1), the inner end of the valve rod (2) is in linkage connection with the ball body (3), and the outer end of the valve rod (2) is in linkage connection with the pneumatic actuator (4); the method is characterized in that: still including setting up filtering component (10) in inlet flow channel (5), filtering component (10) are including filter screen (11), backup pad (12) and press pipe (13), be provided with supporting flange (14) along circumference in inlet flow channel (5), press pipe (13) threaded connection in inlet flow channel (5) inner and compress tightly filter screen (11) and the edge of backup pad (12) on supporting flange (14), a plurality of discharge orifice (15) have evenly been seted up on backup pad (12) surface, filter solution groove (16) have been seted up along circumference in the position that inlet flow channel (5) are close to supporting flange (14) outer end, screw hole (17) that extend to the outside are seted up to the bottom of filter solution groove (16), threaded connection has flowing back screw (18) on screw hole (17).

2. The blowdown pneumatic ball valve of claim 1, wherein: one end of the supporting flange (14) close to the filtrate tank (16) is provided with a guide inclined surface (19) which inclines towards the direction of the filtrate tank (16).

3. The blowdown pneumatic ball valve of claim 1, wherein: first mounting groove (20) have been seted up to the position that overflows chamber (7) and be located inlet flow channel (5) inner, first disk seat (8) and first mounting groove (20) interference fit, second mounting groove (21) have been seted up to the position that overflows chamber (7) and be located outlet flow channel (6) inner, second disk seat (9) and second mounting groove (21) interference fit, first disk seat (8) and second disk seat (9) all adopt the polytetrafluoroethylene material.

4. A blowdown pneumatic ball valve as claimed in claim 3, wherein: the pressing pipe (13) is provided with a pressing flange (22) extending towards the periphery, and the first valve seat (8) is provided with a pressing groove (23) matched with the pressing flange (22).

5. The blowdown pneumatic ball valve of claim 1, wherein: the inner periphery of the pressure pipe (13) is uniformly provided with a plurality of push plates (24), and the push plates (24) extend along the radial direction.

6. The blowdown pneumatic ball valve of claim 1, wherein: and a sealing gasket (25) is clamped between the screw head of the liquid drainage screw (18) and the outer wall of the valve body (1).

7. The blowdown pneumatic ball valve of claim 1, wherein: a first positioning convex rib (26) which extends along the circumferential direction and has a semicircular section is arranged on the inner wall of the first mounting groove (20), the first positioning convex rib (26) protrudes towards the direction of the joint part of the first valve seat (8) and the ball body (3), and a first positioning concave part (27) which is matched with the first positioning convex rib (26) is arranged on the first valve seat (8); be equipped with on second mounting groove (21) inner wall and follow circumference extension and the cross-section is protruding muscle (28) of second location of semicircle shape, protruding muscle (28) of second location are protruding towards the direction at second disk seat (9) and spheroid (3) laminating position, be equipped with on second disk seat (9) and fix a position concave part (29) that agree with mutually with protruding muscle (28) of second location.

8. The blowdown pneumatic ball valve of claim 1, wherein: still include seal assembly (30), seal groove (31) coaxial and valve rod (2) are seted up to valve neck (37) outer end of valve body (1), seal assembly (30) are including packing group (32), packing clamping ring (33) and gland (34), packing clamping ring (33) are pressed packing group (32) and are established in seal groove (31), gland (34) support on packing clamping ring (33) and gland (34) pass through lock bolt (35) and valve neck (37) locking connection of valve body (1).

9. The blowdown pneumatic ball valve of claim 8, wherein: and a disc spring (36) is clamped between the packing press ring (33) and the packing gland (34).