CN201651352U

CN201651352U - Pneumatic air valve

Info

Publication number: CN201651352U
Application number: CN2010201335423U
Authority: CN
Inventors: 姚伟国; 王文超; 侯义福; 姜广强
Original assignee: DALIAN MEGAUNITY Inc
Current assignee: Dalian Zhaohe environmental Polytron Technologies Inc
Priority date: 2010-03-18
Filing date: 2010-03-18
Publication date: 2010-11-24
Anticipated expiration: 2020-03-18

Abstract

The utility model relates to a pneumatic air valve which is applied to a ventilating system and is used as a device for adjusting flow or cutting a gas medium. In the device, an executing mechanism comprises a standard single-acting cylinder, a main rotating arm, an electromagnetic valve, and the like; and the valve adopts the form that a partition plate is arranged in the whole frame. The pneumatic air valve of the utility model has simple structure and is easy to realize the production of a large-area unit valve and a high-torque actuator.

Description

Pneumatic air-valve

Technical field

The utility model relates to a pneumatic air-valve, is to be applied in the device of regulating flow or cut-out in the ventilation system as gas medium.

Background technique

Along with developing rapidly of gas car manufacturing industry, nuclear power industry, metro construction, some air-valves are had higher requirement, show mainly that the area that requires the monomer air-valve is big, opening and closing are swift in motion, safety anti-explosive etc.Pneumatic actuator is undoubtedly desirable as the power of this type of air-valve, but pneumatic air-valve majority in the market is the butterfly valve of angle stroke final controlling element and the modulating valve of small size, because of being subjected to the little restriction of angle stroke final controlling element torque, be difficult to satisfy the needs that the large size wind pipe-adapting is applied mechanically valve, therefore having to adopt a plurality of small size air-valves to carry out assembly unit substitutes, the result of assembly unit brings problems such as cost increase, synchronization control difficulty like this.

Summary of the invention

For solve existing air-valve monomer area little, need deficiency such as assembly unit use, the utility model that a kind of simple in structure, novel pneumatic air-valve of being easy to produce is provided.This model utility structure can not only realize the making of large size monolithic valve body, and can easily produce the supporting pneumatic actuator of different moments of torsion.

The technological scheme that its technical problem that solves the utility model adopts is: adopt the single-acting cylinder of standard to dispose composition actuators such as corresponding main pivoted arm and solenoid valve; Large-area valve body adopts in the integral frame dividing plate form is set; With the valve plate of axis connection dividing plate both sides, the secondary pivoted arm of axle head and connecting rod link to each other and realize parallel or relative open function.Plurality of advantages such as this technological scheme has simple in structure, adapts to all size size, and material, the pneumatic element of use are purchased easily, and cost of production is low, makes easily, and is easy to use, reliable.

Pneumatic actuator is the power that air-valve finishes unlatching, cuts out.It is made up of single-acting cylinder, cylinder block, breeches joint and the main pivoted arm of standard.When pressurized air stretches out cylinder column by electromagnetic valve or withdraws, drive the main pivoted arm be twisted together with it and rotate, main pivoted arm drives driving shaft by flat key and is fixed on valve plate rotation on the axle, finishes unlatching, closing motion.Driving shaft all is equipped with the secondary pivoted arm of same size with other countershafts and links to each other by connecting rod, makes the valve plate that is fixed on the countershaft finish the action of open and close equally.

The valve body of air-valve is an overall structure: be welded into housing with the metal section that is converted into the C type, again according to the size of valve body width W, dividing plate is set in housing, and dividing plate is divided into width with valve body and is not more than 1.2 meters unit, to guarantee that wherein valve plate is not because of the long resistance to flexure that reduces.On the height H direction of valve body, housing and dividing plate have axis hole and installation shaft bearing and bearing in order to support valve shaft.

Concrete technological scheme of the present utility model is: the lateral mid-point of top and bottom housing is welded with longitudinal baffle; Vertically have a spindle hole and a plurality of countershafts hole in the housing, weld bearing support and axle sleeve is installed with the major-minor axis hole is concentric, corresponding position also has axis hole and axle sleeve is installed on the dividing plate, and housing is concentric with the axle sleeve on the dividing plate; Cylinder is connected with cylinder block and is installed on the bearing, and bearing is fixed on vertical housing outside, and the breeches joint of wire connection and main pivoted arm are twisted together on the cylinder column; Main pivoted arm is connected with main shaft, and main shaft all is equipped with the secondary pivoted arm of same size with other countershaft and links to each other by connecting rod; Valve plate is combined by the steel plate of 2 compression mouldings, penetrates main shaft and countershaft in the center hole of valve plate, and block with sealing plate in valve plate and housing gap; Can limit main pivoted arm and open the adjusting overhang of final position and the top that limiting board is installed in horizontal housing, the output terminal of valve shaft be equipped with valve plate rotate synchronously and can and the position limit switch limiting stopper of colliding; Suction tude connects the suction port of solenoid valve, and the relief opening of solenoid valve is connected with silencing apparatus respectively, inserts cylinder after solenoid valve and series flow control valve link.

The beneficial effects of the utility model are: 1. can make the following unit valve body of area 8 square meters, having solved in the past need be with the defective of many assembly units; 2. select the standard cylinder of different cylinder diameters for use, promptly can be assembled into the pneumatic actuator of various moments of torsion, be not subjected to the restriction of special-purpose air-valve final controlling element specification.Can satisfy monomer air-valve area big, be swift in motion reliable, and the requirement of safety anti-explosive.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural front view of the present utility model.

Fig. 2 is that structure A of the present utility model is to view.

Fig. 3 is the utility model pneumatic schematic diagram.

Among the figure, 1. limiting board, 2. overhang, 3. main shaft, 4. main pivoted arm, 5. cylinder, 6. countershaft, 7. bearing, 8. valve plate, 12. housings, 13. sealing plates, 14. dividing plates, 15. limiting stopper, 16. position limit switches, 17. connecting rods, 18. bearing pins, 19. secondary pivoted arm, 20. cylinder blocks, 21.Y type joint, 22. suction tude, 23. silencing apparatus, 24. solenoid valves, 25. series flow control valves.

Embodiment:

In Fig. 1,2, the inside dimension of housing 12 is the nominal size WXH of air-valve; Dividing plate 14 is welded on the 1/2W position (W/2=1000mm, be not more than 1200mm); The H direction of housing has a spindle hole and a plurality of countershafts hole, welds bearing support and axle sleeve is installed with axis hole is concentric, and corresponding position also has axis hole and axle sleeve is installed on the dividing plate, and the axle sleeve on housing and the dividing plate should guarantee concentricity requirement; Cylinder 5 is connected with cylinder block 20 and is installed on the bearing 7, and the breeches joint 21 and the main pivoted arm 4 of wire connection on the cylinder column are twisted together.The cylinder diameter of cylinder is selected (cylinder diameter is 80mm in this example, air pressure P ≒ 0.5MPa), the stroke L of cylinder and the brachium L of main pivoted arm according to the required torque size ₁Relevant: L=√ 2XL ₁, this routine L ₁=106mm, then L=150mm; Valve plate 8 is that the corrosion resistant plate by 2 compression mouldings combines, and the center hole internal diameter of valve plate is bigger 0.5 millimeter than valve shaft diameter, so that valve main shaft and countershaft penetrate the back welding is fixing.When the valve plate Close All puts in place and cylinder column when withdrawing fully, this moment secondary pivoted arm 19 with horizontal sextant angle 45 degree (valve plate parallel opening form).Valve plate is closed overlapped 15 millimeters of back, and block with sealing plate 13 in valve plate and housing gap.Regulate the position of the limiting board 1 on the overhang 2, can limit the final position that main pivoted arm 4 is opened.The limiting stopper 15 that is contained on the valve shaft rotates output signal when colliding with position limit switch 16 synchronously with valve plate.

In Fig. 3, the A of solenoid valve 24, B mouth insert cylinder 5 after linking with series flow control valve 25 respectively.Relief opening R1, the R2 of solenoid valve 24 is connected with silencing apparatus 23 respectively.Suction tude 22 connects the P mouth of solenoid valve 24.

The utility model is not limited to the foregoing description, and protection domain of the present utility model is all classified in any equivalent concepts or change in the technical scope that the utility model discloses as.

Claims

1. pneumatic air-valve, it is characterized in that: the valve body of air-valve is an overall structure, the lateral mid-point of top and bottom housing (12) is welded with longitudinal baffle (14); Vertically have a spindle hole and a plurality of countershafts hole in the housing (12), weld bearing support and axle sleeve is installed with the major-minor axis hole is concentric, dividing plate (14) is gone up corresponding position and is also had axis hole and axle sleeve is installed, and housing is concentric with the axle sleeve on the dividing plate; Cylinder (5) is connected with cylinder block (20) and is installed on the bearing (7), and bearing (7) is fixed on vertical housing (12) outside, and the breeches joint of wire connection (21) is twisted together with main pivoted arm (4) on the cylinder column; Main pivoted arm (4) is connected with main shaft (3), and main shaft (3) all is equipped with the secondary pivoted arm (19) of same size with other countershaft (6) and links to each other by connecting rod (17); Valve plate (8) is combined by the steel plate of 2 compression mouldings, penetrates main shaft (3) and countershaft (6) in the center hole of valve plate, and valve plate (8) blocks with sealing plate (13) with the housing gap; Can limit main pivoted arm (4) and open the adjusting overhang (2) of final position and the top that limiting board (1) is installed in horizontal housing (12), the output terminal of valve shaft is equipped with the limiting stopper (15) with valve plate rotates synchronously and energy and position limit switch (16) are collided; Suction tude (22) connects the suction port of solenoid valve (24), and the relief opening of solenoid valve (24) is connected with silencing apparatus (23) respectively, and solenoid valve (24) inserts cylinder (5) after linking with series flow control valve (25).