CN202302000U

CN202302000U - Sector cylinder pneumatic butterfly valve

Info

Publication number: CN202302000U
Application number: CN2011204284466U
Authority: CN
Inventors: 胡德传; 肖述华
Original assignee: HUBEI SANTONG PETROLEUM MACHINERY CO Ltd
Current assignee: HUBEI SANTONG PETROLEUM MACHINERY CO Ltd
Priority date: 2011-11-02
Filing date: 2011-11-02
Publication date: 2012-07-04
Anticipated expiration: 2021-11-02

Abstract

The utility model provides a pneumatic butterfly valve, comprising a valve body, the top of the valve body is fixedly provided with a cylinder with the front projection in a fan shape, the longitudinal direction of the valve body is provided with a shaft hole, a valve rod is sleeved in the shaft hole, the top of the valve rod is provided with a rectangular square groove; the front side of the cylinder close to the upper and lower sides is respectively provided with an air opening, a plate-shaped piston is disposed in the cylinder, the plate-shaped piston is connected with a rotating shaft at the fan shape circle center of the cylinder, the end part of the rotating shaft is provided with a rectangular protruding head cooperated with a rectangular groove, and the rectangular groove extends out of the cylinder to be embedded in the rectangular groove at the top of the valve rod. The sector cylinder pneumatic butterfly valve is advantaged by high structure, small opening resistance, and strict sealing, the rotating shaft is directly driven by the piston, therefore, failure rate is low, thrust is large, part wearing is reduced, and service lifetime of the pneumatic butterfly valve is prolonged, also, labor intensity of workers is reduced, and fault damage brought by manpower is prevented.

Description

Covering of the fan cylinder Pneumatic butterfly valve

Technical field

The utility model relates to a kind of valve, especially relates to a kind of covering of the fan cylinder Pneumatic butterfly valve.

Background technique

Butterfly valve is to make open-shut device with circular valve plate, opens, closes a kind of valve with the regulated fluid passage through rotational valve plate.It is simple in structure, volume is little, in light weight, material consumption province, and driving moment is little, and switch is rapid, also has good characteristics such as flow regulating function simultaneously, therefore is widely used in the pipe-line system of big medium caliber, mesolow power.Existing reed valve; Like centre-pivoted butterfly valve, eccentric-butterfly-valve etc.; When its valve plate rotated with valve rod, the sealing surface of valve plate edge must produce excessive scraping, squeezing action to rubber valve seat, therefore long-term the use; Cause the wearing and tearing of rubber seal easily, and be difficult to accomplish to seal tight between its valve plate and the rubber seal.In addition, existing butterfly valve is a kind of butterfly valve of handle rotary type, and not only pulling wastes time and energy, and owing to need manual operation, and the error that labor strength is big, be easy to generate operation causes the butterfly switch rate of fault to improve.

Summary of the invention

The utility model purpose provides a kind of covering of the fan cylinder Pneumatic butterfly valve.Big to solve existing butterfly valve seat wearing and tearing, between valve plate and the valve seat poorly sealed close, switch is inconvenient, labor strength is big, the error of manual operation brings technical problems such as machine infringement.

The utility model mainly is able to solve the problems of the technologies described above through following technical proposals: a kind of Pneumatic butterfly valve; Comprise valve body, it is fan-shaped cylinder that said valve body roof anchorage has a front projection, and valve body vertically is provided with axis hole; Be with valve rod in the axis hole, the valve rod top is provided with the rectangle square groove; Respectively be provided with a gas port in the cylinder front near both sides up and down; Be provided with plate piston in the cylinder; Plate piston is connected with the rotating shaft of the fan-shaped circle centre position of cylinder, and the end of rotating shaft has the rectangle plush copper that cooperates with rectangular recess, and the rectangle plush copper is stretched out in the rectangular recess that cylinder is entrenched in the valve rod top outward.

As preferably, be provided with the circular channel that is connected with pipeline in the middle part of the valve body, be provided with the teflon rubber base in the circular channel, valve plate is arranged in the teflon rubber valve seat and with valve rod and is connected, and said valve plate and valve rod center line constitute 16-27 ° tilt angle.

As preferably, said cylinder both sides up and down respectively is provided with one and regulates bolt.

As preferably, said valve rod is made up of upper valve rod and lower valve rod, and upper valve rod is set in the axis hole on circular channel top, and lower valve rod is set in the axis hole of circular channel bottom.

As preferably, said valve plate front is provided with pole socket, and its reverse side is provided with the following pole socket coaxial with last pole socket, and the end of said upper and lower valve rod gets into respectively in the upper and lower pole socket.

Therefore, the utlity model has the structure precision height, opening resistance is little, seals characteristics such as tight, its rotating shaft is directly by piston actuated, so rate of fault is low, thrust is big, and has reduced component wear, has improved the working life of butterfly valve.Reduce labor strength simultaneously, prevented the error infringement that manpower brings.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is the structural representation after valve body shown in Figure 1 is opened;

Fig. 3 is the structural representation of cylinder shown in Figure 1;

Fig. 4 is A shown in Figure 3-A sectional view.

Embodiment

Through embodiment and accompanying drawing, do further bright specifically below to the technological scheme of the utility model.

Fig. 1 is a kind of structural representation of the utility model; Fig. 2 is the structural representation after valve body shown in Figure 1 is opened.By Fig. 1 and combine Fig. 2 to know, this Pneumatic butterfly valve comprises valve body 6, cylinder 1, and cylinder 1 is fixed on valve body 6 tops, and cylinder 1 is by identical half of

cylinder

11,14 be combined intos of a pair of shape.Further can know by Fig. 2; Vertically be provided with axis hole 3 in the valve body 6, be with valve rod (33,34) in the axis hole, valve body 6 middle parts are provided with the circular channel 41 that is connected with pipeline; Be provided with teflon rubber valve seat 52 in the circular channel; That the teflon rubber valve seat has is high lubricated, the life-span is long, and the serviceability temperature scope is (serviceability temperature is-196 ℃-250 ℃) extensively, and is corrosion-resistant (to most of chemicalss and solvent; Show inertia, ability strong alkali-acid resistance, water and various organic solvent), do not adhere to advantages such as any material.Valve plate 4 is arranged in the teflon rubber valve seat 52 and with valve rod (33,34) and is connected; Valve plate and valve rod center line constitute 16-27 ° inclined angle alpha; Through facts have proved, when inclined angle alpha in this scope during value, its valve plate rotates, sealability is best.

Valve rod is made up of upper valve rod 33 and lower valve rod 34, and the upper valve rod top is provided with rectangle square groove 23, and upper valve rod 33 is set in the axis hole 3 on circular channel 4 tops, and lower valve rod 34 is set in the axis hole 35 of circular channel bottom.

Valve plate 4 fronts are provided with pole socket 5; Its reverse side is provided with the following pole socket 51 coaxial with last pole socket 5, and the end of said upper and lower valve rod (33,34) gets into respectively in the upper and lower pole socket (5,51), and the end of its upper valve rod 33 is square plush coppers 37; The center of square plush copper is provided with positioning shaft 36; Owing to be complementary, therefore can get into easily in the pole socket 5, with the rotation of control valve plate 4 with the shape of last pole socket 5 inner groovies and positioning hole.The end of lower valve rod 34 is provided with circular positioning shaft 38, can get into down in the positioning hole of pole socket 51, so that the rotating fulcrum of valve plate 4 to be provided.

Fig. 3 is the structural representation of cylinder 1; By Fig. 3 and combine Fig. 4 to know, the front projection of cylinder 1 is fan-shaped, respectively is provided with a gas port (111,13) in cylinder 1 front near both sides; Be provided with plate piston 25 in the cylinder 1, be provided with a rotating shaft 2 at the fan-shaped circle centre position of cylinder 1.Piston 25 is tabular, further can be known by Fig. 3, and its front projection is the rectangle of band chamfering, and it is nearly oval-shaped axle sleeve 24 right sides that the root of this piston 25 is arranged on section.This axle sleeve 24 is fixed together with rotating shaft 2, and the end of rotating shaft 2 has the rectangle plush copper 21 that cooperates with valve rod (33,34) top rectangular square groove 23, and rectangle plush copper 21 is stretched out cylinder 1 and is entrenched in the rectangular recess 32 at valve rod (33,34) top outward.On the profile of piston 25, be provided with rubber seal 26; This rubber seal 26 seals the surface of contact of piston and cylinder 1, and walks around rotating shaft 2, and the surface of contact of axle sleeve 24 with cylinder 1 also sealed; Thereby form a complete seal face, to guarantee that piston 25 has good air-tightness.

Cylinder 1 left and right sides also respectively is provided with one and regulates bolt (27,28), and the effect of this adjusting bolt (27,28) is that piston 25 is stopped, regulates the position of its movable terminal point, thereby countershaft 2 rotation angles limit.When practical application, according to the switching characteristic of valves such as butterfly valve, its rotation angle generally is restricted to 90 °.

The gas port of Fan shape cylinder 1 (111,13) is with after gas circuit is communicated with; Open the solenoid valve in the gas circuit; Pressurized gas get into from cylinder 1 upside gas port 111, and piston 25 receives the impetus of gas, rotates to cylinder 1 downside; And force air to be got rid of through downside gas port 13, drive valve plate 4 simultaneously and clockwise rotate.Close the solenoid valve in the gas circuit, pressurized gas get into from cylinder 1 downside gas port 13, and piston 25 receives the impetus of gas, rotate to cylinder 1 downside, and force air to pass through 111 eliminatings of upside gas port, drive valve plate 4 simultaneously and rotate counterclockwise.

Claims

1. a covering of the fan cylinder Pneumatic butterfly valve comprises valve body, it is characterized in that it is fan-shaped cylinder that said valve body roof anchorage has a front projection, and valve body vertically is provided with axis hole, is with valve rod in the axis hole, and the valve rod top is provided with the rectangle square groove; Respectively be provided with a gas port in the cylinder front near both sides up and down; Be provided with plate piston in the cylinder; Plate piston is connected with the rotating shaft of the fan-shaped circle centre position of cylinder, and the end of rotating shaft has the rectangle plush copper that cooperates with rectangular recess, and the rectangle plush copper is stretched out in the rectangular recess that cylinder is entrenched in the valve rod top outward.

2. covering of the fan cylinder Pneumatic butterfly valve according to claim 1; It is characterized in that said valve body middle part is provided with the circular channel that is connected with pipeline; Be provided with the teflon rubber base in the circular channel; Valve plate is arranged in the teflon rubber valve seat and with valve rod and is connected, and said valve plate and valve rod center line constitute 16-27 ° tilt angle.

3. covering of the fan cylinder Pneumatic butterfly valve according to claim 1 and 2 is characterized in that said cylinder respectively is provided with an adjusting bolt in both sides up and down.

4. covering of the fan cylinder Pneumatic butterfly valve according to claim 1 and 2 is characterized in that said valve rod is made up of upper valve rod and lower valve rod, and upper valve rod is set in the axis hole on circular channel top, and lower valve rod is set in the axis hole of circular channel bottom.