CN207246531U

CN207246531U - A kind of Pneumatic executive valve

Info

Publication number: CN207246531U
Application number: CN201721350065.4U
Authority: CN
Inventors: 张武
Original assignee: ZHEJIANG HUAERSHI AUTOMATIC CONTROL INSTRUMENT VALVE CO Ltd
Current assignee: ZHEJIANG HUAERSHI AUTOMATIC CONTROL INSTRUMENT VALVE CO Ltd
Priority date: 2017-10-18
Filing date: 2017-10-18
Publication date: 2018-04-17
Anticipated expiration: 2027-10-18

Abstract

The utility model discloses a kind of Pneumatic executive valve, valve seat is provided between first housing and the second housing, the first cylinder is provided with first shell body, link with the first cylinder the upper end of valve seat, the second cylinder is provided with second shell body, link with the second cylinder the lower end of valve seat, the First piston bar of endways setting stretches out first housing, the other end of the First piston bar is connected with the upper end of first valve rod, the second piston bar of endways setting stretches out second housing, the other end of the second piston bar is connected with the lower end of second valve rod, the valve seat is internally provided with passage, the utility model sealing performance improves, being capable of quick either on or off.

Description

A kind of Pneumatic executive valve

Technical field

It the utility model is related to valve field, and in particular to a kind of Pneumatic executive valve.

Background technology

Sealing surface of seat is bonded with the long-term tight-holding type of valve plate, and over time, sealing efficiency reduces, and product structure is multiple Miscellaneous, technology difficulty increases, manufacture cost increase., it is necessary to close valve by hand wheel rotating in closing process, it is inconvenient. Pneumatic actuator drives valve motion using oil-free compressed air as power.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of Pneumatic executive valve, rapid switching valve.

In order to solve the above technical problems, the utility model adopts the following technical scheme that：

A kind of Pneumatic executive valve, including the first housing, the second housing, valve seat, the first valve rod, the second valve rod, the first valve plate, Second valve plate, is provided with the valve seat between first housing and second housing, is provided with the first shell body One cylinder, the upper end of the valve seat and the first cylinder link, and are provided with the second cylinder in the second shell body, under the valve seat End is linked with the second cylinder, is provided with first piston in the first cylinder, and one end of the first piston and First piston bar is fixed Connection, the First piston bar of endways setting stretch out first housing, the other end of the First piston bar and described the The upper end of one valve rod connects, and is provided with second piston in the second cylinder, one end of the second piston and second piston bar is fixed Connection, the second piston bar of endways setting stretch out second housing, the other end of the second piston bar and described the The lower end connection of two valve rods, the valve seat are internally provided with passage.

Further, the upper part of the valve seat and lower part are outstanding, and outstanding shape is arc-shaped, described The arc convex surface of valve seat upper end is provided with the first through hole put in for first valve rod, and the lower end of first valve rod is by described The first through hole above valve seat extend into the inside of the valve seat, and the lower end of first valve rod is consolidated with first valve plate Fixed connection.

Further, the arc convex surface of the valve seat lower end is provided with the second through hole put in for second valve rod, institute The upper end for stating the second valve rod is extend into the inside of the valve seat, second valve rod by second through hole below the valve seat Upper end be fixedly connected with second valve plate.

Further, first valve plate is arranged at the position that part is outstanding on the valve seat, first valve The upper surface of plate is the arc surface with the upper body fit of the valve seat, and second valve plate is arranged on the valve seat lower part At outstanding position, the lower face of second valve plate is the arc surface being adapted with the lower part of the valve seat, described First valve plate and axisymmetrical of second valve plate on the passage.

Further, the lower face of first valve plate and the upper surface of second valve plate are plane.

Further, the first spring, second spring, the 3rd spring and the 4th spring are additionally provided with the valve seat, it is described First spring and the second spring are arranged on the both sides of first valve plate, and the 3rd spring and the 4th spring are set In the both sides of second valve plate, first spring and axisymmetrical of the 3rd spring on the passage, described the Two springs and axisymmetrical of the 4th spring on passage.

Further, one end of first spring is fixed on the inner wall of the valve seat, first spring it is another End is fixedly connected with the side of the first sliding block, and the another side of first sliding block is the left end face phase with first valve plate The inclined-plane of adaptation；One end of the second spring is fixed on the inner wall of the valve seat, the other end of the second spring and The side of two sliding blocks is fixedly connected, and the another side of second sliding block is what is be adapted with its right end face of first valve plate Inclined-plane.

Further, first sliding block, it is described second slide on the passage axisymmetrical be provided with the 3rd sliding block, Four-slider.

The beneficial effects of the utility model：

The First piston bar of driving is connected with the first valve rod in the first cylinder in the utility model, driving in the second cylinder Second piston bar is connected with the second valve rod, and the first valve rod is connected with the first valve plate, and the second valve rod is connected with the second valve plate, is realized The quick closedown of valve is opened, the first sliding block of the first spring connection, the second sliding block of second spring connection, the connection of the 3rd spring The 3rd sliding block, the 4th spring connection Four-slider make it that sealing performance is strengthened, improve the leakproofness of valve.

Brief description of the drawings

Fig. 1 is the structure diagram of the utility model.

Fig. 2 is the structure diagram of valve seat.

In figure：1 first housing, 101 First piston bars, 2 second housings, 201 second piston bars, 3 valve seats, 301 passages, 302 first through hole, 303 second through holes, 304 first springs, 305 second springs, 306 the 3rd springs, 307 the 4th springs, 308 One sliding block, 309 second sliding blocks, 310 the 3rd sliding blocks, 311 Four-sliders, 4 first valve rods, 5 second valve rods, 6 first valve plates, 7 Two valve plates.

Embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained, shall fall within the protection scope of the present invention.

A kind of Pneumatic executive valve, including the first housing 1, the second housing 2, valve seat 3, the first valve rod 4, the second valve rod 5, first Valve plate 6, the second valve plate 7.

As shown in Figure 1, being provided with valve seat 3 between the first housing 1 and the second housing 2, the first gas is provided with the first housing 1 Cylinder, the upper end of valve seat 3 are linked with the first cylinder, and the second cylinder, the lower end of valve seat 3 and the second cylinder are provided with the second housing 2 Linkage.First piston is provided with first cylinder, first piston is fixedly connected with one end of First piston bar 101, endways setting First piston bar 101 stretch out the first housing 1, the other end of First piston bar 101 is connected with the upper end of the first valve rod 4.Second Second piston is provided with cylinder, second piston is fixedly connected with one end of second piston bar 201, the second piston of endways setting Bar 201 stretches out the second housing 2, and the other end of second piston bar 201 is connected with the lower end of the second valve rod 5.

Valve seat 3 is internally provided with passage 301, and the upper part of valve seat 3 and lower part are outstanding, and outstanding shape is Arc-shaped.The arc convex surface of 3 upper end of valve seat is provided with the first through hole 302 put in for the first valve rod 4, and the circular arc of valve seat lower end is convex Face is provided with the second through hole 303 put in for the second valve rod 5, and the lower end of the first valve rod 4 is by the first through hole 302 above valve seat 3 The inside of valve seat 3 is extend into, the upper end of the second valve rod 5 is extend into the inside of valve seat 3 by the second through hole 303 of the lower section of valve seat 3, the The lower end of one valve rod 4 is fixedly connected with the first valve plate 6, and the upper end of the second valve rod 5 is fixedly connected with the second valve plate 7, the first valve plate 6 It is arranged at the position that part is outstanding on valve seat 3, the second valve plate 7 is arranged at the outstanding position of 3 lower part of valve seat. The upper surface of first valve plate 6 is the arc surface with the upper body fit of valve seat 3, and the lower face of the second valve plate 7 is and valve seat 3 The arc surface that lower part is adapted, the axisymmetrical of the first valve plate 6 and the second valve plate 7 on passage 301.Under first valve plate 6 End face is plane, and the upper surface of the second valve plate 7 is also plane.

Operation principle is：When needing to close valve, moved downward by First piston bar, second piston bar is transported upwards It is dynamic, promote the first valve rod to move downward, the second valve rod moves upwards, and the first valve plate is merged with the second valve plate, blocks passage, when When needing Open valve, First piston bar is moved upwards, and second piston bar is moved upwards to movement, the first valve rod of promotion, the Two valve rods move downward, and the first valve plate and the second valve plate are separated, and passage is opened.

As shown in Fig. 2, the first spring 304, second spring 305, the 3rd spring 306 and the 4th bullet are additionally provided with valve seat 3 Spring 307, the first spring 304, second spring 305, the 3rd spring 306 and the 4th spring 307 are separately positioned on the step position of valve seat 3 Place is put, the first spring 304 and second spring 305 are arranged on the both sides of the first valve plate 6, and the 3rd spring 306 and the 4th spring 307 are set Put in the both sides of the second valve plate 7, the axisymmetrical of the first spring 304 and the 3rd spring 306 on passage 301, likewise, second Axisymmetrical of 305 and the 4th spring 307 of spring on passage 301.One end of first spring 304 is fixed on the inner wall of valve seat 3 On, the other end of the first spring 301 is fixedly connected with the side of the first sliding block 308, and the another side of the first sliding block 308 is oblique Face, inclined-plane are adapted with the left end face of the first valve plate 6；One end of second spring 305 is fixed on the inner wall of valve seat 3, and second The other end of spring 305 is fixedly connected with the side of the second sliding block 309, and the another side of the second sliding block 309 is inclined-plane, inclined-plane with Its right end face of first valve plate 6 is adapted.3rd sliding block 310, Four-slider 311 respectively with the first sliding block 308, the second sliding block 309 axisymmetrical on passage 301, no longer excessively repeats.

The first sliding block 308 that first spring 304, second spring 305, the 3rd spring 306 and the 4th spring 307 are connected, In passage opening, i.e. the first valve plate 6 and the second valve plate 7 are not for second sliding block 309, the 3rd sliding block 310, Four-slider 311 During merging, for the liquid in block channel 301, prevent liquid from being flowed from the upper end of the first valve plate 6 and the lower end of the second valve plate 7 Go out.

While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from the principle of the utility model and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims

A kind of 1. Pneumatic executive valve, it is characterised in that：Including the first housing (1), the second housing (2), valve seat (3), the first valve rod (4), the second valve rod (5), the first valve plate (6), the second valve plate (7), between first housing (1) and second housing (2) The valve seat (3) is provided with, the first cylinder, upper end and the first cylinder of the valve seat (3) are provided with first housing (1) Linkage, second housing (2) is interior to be provided with the second cylinder, and lower end and the second cylinder of the valve seat (3) link, the first cylinder First piston is inside provided with, the first piston is fixedly connected with the one end of First piston bar (101), and described the of endways setting One piston rod (101) stretches out first housing (1), the other end of the First piston bar (101) and first valve rod (4) Upper end connection, be provided with second piston in the second cylinder, one end of the second piston and second piston bar (201), which is fixed, to be connected Connect, the second piston bar (201) of endways setting stretches out second housing (2), the second piston bar (201) it is another End is connected with the lower end of second valve rod (5), and the valve seat (3) is internally provided with passage (301).
A kind of 2. Pneumatic executive valve according to claim 1, it is characterised in that：The upper part and lower part of the valve seat (3) Point outstanding, outstanding shape be arc-shaped, and the arc convex surface of valve seat (3) upper end is provided with confession first valve The first through hole (302) that bar (4) is put in, the lower end of first valve rod (4) is by the first through hole above the valve seat (3) (302) inside of the valve seat (3) is extend into, the lower end of first valve rod (4) is fixedly connected with first valve plate (6).
A kind of 3. Pneumatic executive valve according to claim 1, it is characterised in that：The arc convex surface of valve seat (3) lower end The second through hole (303) put in for second valve rod (5) is provided with, the upper end of second valve rod (5) is by the valve seat (3) Second through hole (303) of lower section extend into the inside of the valve seat (3), the upper end of second valve rod (5) and described the Two valve plates (7) are fixedly connected.
A kind of 4. Pneumatic executive valve according to claim 1, it is characterised in that：First valve plate (6) is arranged on described On valve seat (3) at the outstanding position in part, the upper surface of first valve plate (6) is the upper part with the valve seat (3) The arc surface being adapted, second valve plate (7) are arranged at the outstanding position of the valve seat (3) lower part, and described The lower face of two valve plates (7) is the arc surface that is adapted with the lower part of the valve seat (3), first valve plate (6) with it is described Axisymmetrical of second valve plate (7) on the passage (301).
A kind of 5. Pneumatic executive valve according to claim 1, it is characterised in that：The lower face of first valve plate (6) with The upper surface of second valve plate (7) is plane.
A kind of 6. Pneumatic executive valve according to claim 1, it is characterised in that：First is additionally provided with the valve seat (3) Spring (304), second spring (305), the 3rd spring (306) and the 4th spring (307), first spring (304) and described Second spring (305) is arranged on the both sides of first valve plate (6), the 3rd spring (306) and the 4th spring (307) The both sides of second valve plate (7) are arranged on, first spring (304) is with the 3rd spring (306) on the passage (301) axisymmetrical, the second spring (305) and axisymmetrical of the 4th spring (307) on passage (301).
A kind of 7. Pneumatic executive valve according to claim 6, it is characterised in that：One end of first spring (304) is consolidated It is scheduled on the inner wall of the valve seat (3), the other end of first spring (304) and the side of the first sliding block (308) are fixed and connected Connect, the another side of first sliding block (308) is the inclined-plane being adapted with the left end face of first valve plate (6)；It is described One end of second spring (305) is fixed on the inner wall of the valve seat (3), the other end and second of the second spring (305) The side of sliding block (309) is fixedly connected, and the another side of second sliding block (309) is the right side with first valve plate (6) The inclined-plane that end face is adapted.
A kind of 8. Pneumatic executive valve according to claim 7, it is characterised in that：First sliding block (308), described second Sliding block (309) is provided with the 3rd sliding block (310), Four-slider (311) on the axisymmetrical of the passage (301).