CN2103062U

CN2103062U - Film pneumatic valve

Info

Publication number: CN2103062U
Application number: CN 91215237
Authority: CN
Inventors: 陈翔龙; 陈家庆; 庄怀德; 包育芳
Original assignee: Shanghai Iron & Steel Technology Inst
Current assignee: Shanghai Iron & Steel Technology Inst
Priority date: 1991-03-20
Filing date: 1991-03-20
Publication date: 1992-04-29

Abstract

The utility model discloses a flexible elastic membrane valve which is mainly composed of a valve body, a membrane, a supporting plate, a sieve plate, division bars, etc., wherein, an air inlet and an air outlet are arranged on a valve seat, an air hole group, the sieve plate and the division bars are arranged on the supporting plate, a venthole and a spherical arc-shaped cavity are arranged on one end cover, the membrane is arranged between the supporting plate and an upper end cover, and the membrane is made of flexible elastic material. The utility model solves the technical problems that operational reliability and service life are influenced because of the friction and the impact of the members of a general pneumatic valve, and working accuracy and the reduction of manufacturing cost in a larger range are influenced because sewage jams a gap, etc. The utility model is mainly applied to occasions using pneumatic valves or air current pressure valves.

Description

Film pneumatic valve

The utility model belongs to the technical field of relevant valve in common engineering element or the parts.All kinds of valve products of producing all had machinery execution member that opens and closes valve and the moving element of being made by hard material (as valve block, flap, valve ball, barrier film etc.) in 1986 as Britain SAUNDERS valve company in the product at present.Owing to constructional reason, when moving element produces on-off action, to rub or bump with carrying out the generation of member or valve body inevitably, thereby influence working life and functional reliability; Because the piston and the gap between the cylinder body of general guiding valve are less, dirt stops up easily, thereby has influenced operating accuracy; In addition, the structure of general pneumatic valve is more complicated all, and volume is bigger, and cost is corresponding higher.

The purpose of this utility model is to provide a kind of machinery that do not adopt to carry out member, but utilizes the working medium pressure difference of film between up and down to produce the valve of on-off action.Thereby avoid producing the phenomenon that frequent friction, bump and dirt stop up the gap, improve working life, functional reliability, operating accuracy and the reduction manufacture cost of valve.

Content of the present utility model can 1,2 be done following narration in conjunction with the accompanying drawings:

The utility model is made up of upper end cap 1, microwell plate 2, parting bead 3, film 4, sieve plate 5, pad 6, support plate 7,8 of lower end seats, there is a vent in upper end cap 1 center portion, place microwell plate 2 in the vent, a spherical arc shape cavity is arranged at upper end cap 1 bottom; About on the support plate 7 two positions respectively symmetry place the sieve plates 5 of a slice semicircle shapes, middlely separate with parting bead 3, parting bead 3 is embedded on the support plate 7, on the position that is covered by sieve plate 5 of support plate 7 several vents is arranged; Place a slice film 4 and pad 6 between support plate 7 and upper end cap 1, film 4 is by the soft resilient material manufacturing; Support plate 7 underneath deposit end seat 8, and there are an inlet hole or air outlet hole in two positions about lower end seat 8, communicate with vent on the support plate 7 respectively into and out of pore; Be linked to be an integral body with coupling between upper end cap 1, support plate 7 and the lower end seat 8.

When gas pressure that the control atmospheric pressure that enters the vent from upper end cap 1 enters less than inlet hole from lower end seat 8, film 4 is close to spherical arc shape cavity on the upper end cap 1 because of pressure reduction produces resiliently deformable, and this moment, air flue was open-minded; Otherwise then air flue is closed.In the inlet hole on the lower end seat 8, also can import the working medium of the liquid state of certain pressure.

The elastic film of the utility model matter because employing softens is as the moving element in the valve body, there are not friction or impingement phenomenon, so obviously improve working life, general switching number of times can be up to more than several ten million times, calculate for ten times by average per minute kind action, to a slice film, generally can use more than 10 years; Owing to used sieve plate, parting bead and film, under the prerequisite that does not influence sealing, can make dirt obtain filtering and draining, the reliability and the operating accuracy of valve have been improved, because simple in structure, volume is less, requirement on machining accuracy is low, therefore, manufacture cost is lower, generally is about the cost with bore pneumatic ball valve 1/5th.

Embodiment of the present utility model is summarized as follows:

Adopt the manufactured materials of soft rubber as film 4.If the valve of 100mm bore can adopt the film of 1mm thickness.

Fig. 1 is sectional drawing of the present utility model. Fig. 2 is the partial top view of Fig. 1.

Claims

1, a kind of film pneumatic valve is characterized in that being made up of parts such as upper end cap 1, microwell plate 2, parting bead 3, film 4, sieve plate 5, pad 6, support plate 7, lower end seats 8; There is a vent in upper end cap 1 center portion, places microwell plate 2 in the vent, and a cavity is arranged at upper end cap 1 bottom; A slice sieve plate 5 is placed at two positions respectively about on the support plate 7, middlely separates with parting bead 3, and parting bead 3 is embedded on the support plate 7, on the position that is covered by sieve plate 5 of support plate 7 several vents is arranged; Place a slice film 4 and pad 6 between support plate 7 and upper end cap 1, film 4 is by the soft resilient material manufacturing; Lower end seat 8 is arranged below the support plate 7, and there are an air inlet or air outlet hole in two positions about lower end seat 8, communicate with vent on the support plate 7 respectively into and out of pore; Be linked to be an integral body with coupling between upper end cap 1, support plate 7 and the lower end seat 8.

2, by the described film pneumatic valve of claim 1, it is characterized in that film 4 is by soft rubber-plastics material manufacturing; A spherical arc shape cavity is arranged at upper end cap 1 bottom; Sieve plate 5 is a semicircle shape.