CN210372050U

CN210372050U - Pneumatic expansion butterfly valve

Info

Publication number: CN210372050U
Application number: CN201921446481.3U
Authority: CN
Inventors: 洪良海; 洪礼义; 洪礼福
Original assignee: Guangzou Jiafu Fluid Control Technology Co ltd
Current assignee: Guangzou Jiafu Fluid Control Technology Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-04-21
Anticipated expiration: 2029-09-02

Abstract

The utility model relates to a butterfly valve technical field discloses a pneumatic inflation formula butterfly valve, for the working property that improves pneumatic inflation formula butterfly valve, the valve body has been cup jointed in the outside of disk seat, and the inboard of disk seat is provided with the valve plate, the outside of fixed pipe is fixed with manual actuator, and the top of fixed pipe is provided with pneumatic actuator, the inboard embedding of valve plate is provided with the valve rod. The utility model discloses manual actuator has been set up, block through driving gear and driven gear on the manual actuator, can make things convenient for the staff to pass through manual rotation handle, avoid because of the unable work of unexpected condition pneumatic actuator, the butterfly valve loses the condition of controlling, further can improve the palm nature of staff to pneumatic expansion butterfly valve, aerify and exit through the expansion of relief pressure valve to the disk seat, can reduce the valve plate open when closing and the disk seat between frictional force, and then improve the life of disk seat, can improve the leakproofness of expansion butterfly simultaneously.

Description

Pneumatic expansion butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a pneumatic inflation formula butterfly valve.

Background

The butterfly valve is a regulating valve with simple structure, can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and has the characteristics of simple structure, small volume, light weight, simple operation, good fluid control and the like.

However, the valve seat and the valve plate of the butterfly valve in the market generally wear seriously, the service life is short, the controllability is single, and various emergencies cannot be dealt with, so that the technical personnel in the field provide a pneumatic expansion type butterfly valve to solve the problems provided in the background technology.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic inflation formula butterfly valve to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pneumatic expansion butterfly valve, includes the disk seat, the valve body has been cup jointed in the outside of disk seat, and the inboard of disk seat is provided with the valve plate, the top of valve body is provided with fixed pipe, and the outside of valve body is located the both sides of fixed pipe and all is provided with the fixed orifices, one side that the outside of valve body is located the fixed orifices is provided with the relief pressure valve, the outside of fixed pipe is fixed with manual actuator, and the top of fixed pipe is provided with pneumatic actuator, fixed pipe passes through location spiral shell board and pneumatic actuator fixed connection, pneumatic actuator's top is connected with the valve position indicator, the inboard embedding of valve plate is provided with the valve rod, and the valve plate passes through taper pin and valve rod fixed connection, the bush has been cup jointed in the outside of valve rod, and the inboard that the outside of valve rod is located the bush has cup jointed O.

As a further aspect of the present invention: the manual actuator comprises a sealing shell, a driven gear is arranged on the inner side of the sealing shell, a driving gear is arranged on one side, located on the driven gear, of the inner side of the sealing shell, a rotating rod is embedded into the rear side of the sealing shell, and a handle is fixed to the top end of the rotating rod.

As a further aspect of the present invention: the tooth of driving gear and driven gear block each other, the dwang passes through driving gear and driven gear rotation with the valve rod and is connected.

As a further aspect of the present invention: the valve seat is an EPDM material component, and the outer channel diameter of the valve seat is matched with the inner diameter of the valve body.

As a further aspect of the present invention: the bushing is a copper component, the O-shaped ring is a PTFE rubber component, and the valve rod is hermetically connected with the upper port and the lower port of the pneumatic actuator through the bushing and the O-shaped ring respectively.

As a further aspect of the present invention: the outer diameter of the valve plate is matched with the inner diameter of the valve seat, and the valve plate is rotatably connected with the pneumatic actuator through the valve rod.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses manual actuator has been set up, block through driving gear and driven gear on the manual actuator, can make things convenient for the staff to pass through manual rotation handle, the drive valve rod rotates, and then open the disk seat and close, thereby can avoid because of the unable work of the pneumatic actuator of accident situation, the butterfly valve loses the condition of controlling, further can improve the control nature of staff to pneumatic inflation butterfly valve, avoid the emergence of incident, through the relief pressure valve to the inflation and the gassing of disk seat, can reduce the valve plate open when closing and the disk seat between the frictional force, and then improve the life of disk seat, can improve the leakproofness of inflation butterfly simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of a pneumatic expansion butterfly valve;

FIG. 2 is an exploded view of a pneumatic expansion butterfly valve;

fig. 3 is a schematic structural diagram of a manual actuator in a pneumatic expansion butterfly valve.

In the figure: 1. a valve seat; 2. a valve plate; 3. a valve body; 4. a fixing hole; 5. a pressure reducing valve; 6. a manual actuator; 61. sealing the housing; 62. a driven gear; 63. a driving gear; 64. rotating the rod; 65. a handle; 7. a fixed tube; 8. a pneumatic actuator; 9. a taper pin; 10. positioning a screw plate; 11. a valve stem; 12. a key; 13. a bushing; 14. an O-shaped ring; 15. a valve position indicator.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a pneumatic expansion butterfly valve includes a valve seat 1, a valve body 3 sleeved outside the valve seat 1, and the valve plate 2 is arranged on the inner side of the valve seat 1, the valve seat 1 is an EPDM material component, the outer groove diameter of the valve seat 1 is matched with the inner diameter of the valve body 3, when the pneumatic actuator 8 pushes the valve plate 2 to close, the valve plate 2 is instantaneously contacted with the valve seat 1, the friction can be reduced through the valve seat 1 made of EPDM material, thereby reducing the abrasion, prolonging the service life of the butterfly valve, when the valve plate 2 is closed, the valve seat 1 is inflated through the pressure reducing valve 5, a larger sealing surface can be improved, further, the sealing performance of the butterfly valve can be improved, when the pneumatic actuator 8 pushes the valve plate 2 to open, the pressure reducing valve 5 deflates, the contact surface of the control valve seat 1 is reduced, and then can facilitate the opening of valve plate 2, the wearing and tearing that simultaneously can further reduce valve seat 1.

A fixed pipe 7 is arranged above the valve body 3, fixing holes 4 are arranged on the outer side of the valve body 3 and positioned on two sides of the fixed pipe 7, a pressure reducing valve 5 is arranged on one side of the outer side of the valve body 3 and positioned on the fixing holes 4, a manual actuator 6 is fixed on the outer side of the fixed pipe 7, the manual actuator 6 comprises a sealing shell 61, a driven gear 62 is arranged on the inner side of the sealing shell 61, a driving gear 63 is arranged on one side of the inner side of the sealing shell 61 and positioned on the driven gear 62, a rotating rod 64 is embedded into the rear side of the sealing shell 61, a handle 65 is fixed at the top end of the rotating rod 64, when the pneumatic actuator 8 cannot work due to an accident, an air release button of the pressure reducing valve 5 is opened to release the vacuum air pressure in the valve seat 1, and then the rotating rod 64 is driven to rotate by, and then drive valve rod 11 and rotate, valve rod 11 drives disk seat 1 and opens the closure, the mutual block of tooth of driving gear 63 and driven gear 62, dwang 64 passes through driving gear 63 and driven gear 62 with valve rod 11 and rotates and be connected, block through driving gear 63 and driven gear 62 on manual actuator 6, can make things convenient for the staff to pass through manual rotation handle 65, drive valve rod 11 and rotate, and then open and close disk seat 1, thereby can avoid because of the unable work of the pneumatic actuator 8 of accident situation, the condition that the butterfly valve loses control, further can improve the control nature of staff to pneumatic inflation butterfly valve, avoid the emergence of incident.

The top of fixed pipe 7 is provided with pneumatic actuator 8, and fixed pipe 7 passes through location spiral shell 10 and pneumatic actuator 8 fixed connection, the external diameter of valve plate 2 and the internal diameter looks adaptation of disk seat 1, and valve plate 2 passes through valve rod 11 and pneumatic actuator 8 rotates to be connected, drives the rotation of valve plate 2 through pneumatic actuator 8, and it is little to have the torque, and wearing and tearing are low, long service life's characteristic.

The upper portion of the pneumatic actuator 8 is connected with a valve position indicator 15, the valve rod 11 is embedded in the inner side of the valve plate 2, the valve plate 2 is fixedly connected with the valve rod 11 through a taper pin 9, a bushing 13 is sleeved on the outer side of the valve rod 11, an O-shaped ring 14 is sleeved on the inner side, located on the outer side of the bushing 13, of the valve rod 11, the valve rod 11 is fixedly connected with the pneumatic actuator 8 through a key 12, the bushing 13 is a copper component, the O-shaped ring 14 is a PTFE rubber component, the valve rod 11 is hermetically connected with the upper port and the lower port of the pneumatic actuator 8 through the bushing 13 and the O-shaped ring 14 respectively, the O-shaped ring 14 made of PTFE rubber is sleeved on the valve rod 11, and then under the fixation of the copper bushing 13, the valve rod 11 can be hermetically connected with the pneumatic actuator 8, and further the stability of the internal air pressure.

The utility model discloses a theory of operation is: the pneumatic actuator 8 drives the valve rod 11 to rotate, the bottom of the valve rod 11 is fixed with the valve plate 2 through the taper pin 9, the valve rod 11 drives the valve plate 2 to open and close, when the pneumatic actuator 8 pushes the valve plate 2 to close, the valve plate 2 is in instantaneous contact with the valve seat 1, friction can be reduced through the valve seat 1 made of EPDM materials, abrasion can be reduced, the service life of the butterfly valve is prolonged, when the valve plate 2 is closed, the valve seat 1 is inflated through the pressure reducing valve 5, a larger sealing surface can be improved, the sealing performance of the butterfly valve can be improved, when the pneumatic actuator 8 pushes the valve plate 2 to open, the pressure reducing valve 5 discharges air, the contact surface of the valve seat 1 is controlled to be reduced, the valve plate 2 can be conveniently opened, meanwhile, abrasion of the valve seat 1 can be further reduced, when the pneumatic actuator 8 cannot work due to an accident condition, release the inside vacuum air pressure of disk seat 1, and then through rotating handle 65, it rotates to drive dwang 64, dwang 64 drives driving gear 63 and the mutual block rotation of driven gear 62, and then drive valve rod 11 and rotate, valve rod 11 drives disk seat 1 and opens the closure, thereby can avoid because of the unable work of the pneumatic actuator 8 of accident situation, the condition that the butterfly valve lost control, further can improve the control nature of staff to the pneumatic expansion butterfly valve, avoid the emergence of incident, drive the rotation of valve plate 2 through pneumatic actuator 8, it is little to have the torque, low wear and tear, long service life's characteristic.

Claims

1. The pneumatic expansion butterfly valve comprises a valve seat (1) and is characterized in that a valve body (3) is sleeved on the outer side of the valve seat (1), a valve plate (2) is arranged on the inner side of the valve seat (1), a fixed pipe (7) is arranged above the valve body (3), fixed holes (4) are formed in the two sides, located on the fixed pipe (7), of the outer side of the valve body (3), a pressure reducing valve (5) is arranged on one side, located on the fixed hole (4), of the outer side of the valve body (3), a manual actuator (6) is fixed on the outer side of the fixed pipe (7), a pneumatic actuator (8) is arranged above the fixed pipe (7), the fixed pipe (7) is fixedly connected with the pneumatic actuator (8) through a positioning screw plate (10), a valve position indicator (15) is connected above the pneumatic actuator (8), a valve rod (11) is arranged on the inner side of the valve plate (2) in an embedded, and valve plate (2) are through taper pin (9) and valve rod (11) fixed connection, bush (13) have been cup jointed in the outside of valve rod (11), and the inboard that the outside of valve rod (11) is located bush (13) has cup jointed O type circle (14), valve rod (11) are through key (12) and pneumatic actuator (8) fixed connection.

2. The pneumatic expansion butterfly valve according to claim 1, wherein the manual actuator (6) comprises a sealed housing (61), a driven gear (62) is arranged inside the sealed housing (61), a driving gear (63) is arranged on one side of the driven gear (62) inside the sealed housing (61), a rotating rod (64) is embedded in the rear side of the sealed housing (61), and a handle (65) is fixed at the top end of the rotating rod (64).

3. The pneumatic expansion butterfly valve according to claim 2, wherein the teeth of the driving gear (63) and the driven gear (62) are engaged with each other, and the rotating rod (64) is rotatably connected to the valve stem (11) via the driving gear (63) and the driven gear (62).

4. A pneumatic expansion butterfly valve according to claim 1, characterised in that the valve seat (1) is an EPDM material and the outer diameter of the valve seat (1) is adapted to the inner diameter of the valve body (3).

5. A pneumatic expansion butterfly valve according to claim 1, characterised in that the bush (13) is a copper element, the O-rings (14) are PTFE rubber elements and the stem (11) is hermetically connected to the upper and lower ports of the pneumatic actuator (8) through the bush (13) and the O-rings (14), respectively.

6. A pneumatic expansion butterfly valve according to claim 1, characterised in that the outer diameter of the valve plate (2) is adapted to the inner diameter of the valve seat (1) and in that the valve plate (2) is rotatably connected to the pneumatic actuator (8) by means of a stem (11).