CN201412598Y

CN201412598Y - Precise pedal valve

Info

Publication number: CN201412598Y
Application number: CN2009201170926U
Authority: CN
Inventors: 陈建杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-09
Filing date: 2009-04-09
Publication date: 2010-02-24
Anticipated expiration: 2019-04-09

Abstract

A precise pedal valve comprises an upper cover with a cover spring, a lower cover with a cover spring, a pneumatic valve with an air inlet, an air outlet and an exhaust outlet, and a driving device. The valve body of the pneumatic valve is fixed on the lower cover, and an ejector pin on the pneumatic valve is matched with the driving device; in the driving device, a shifting block on the upper cover is matched with steel balls arranged inside a fixed seat on the lower cover, and the steel balls are matched with the ejector pin; and the valve body of the pneumatic valve is fixed inside the fixed seat on the lower cover. The valve has simple structure, fewer parts, easy fabrication and installation, low cost, and small volume. When a user steps down the valve with foot, the shifting block isinserted into the fixed seat for positioning and then drives the steel balls to butt against the ejector pin to move forwardly for on/off operations of an air path; and meanwhile the lower part of the valve body is fixed with the lower cover through a positioning post and the upper part thereof is pressed and fixed by a cover plate positioning post to prevent the movement of the valve body. Therefore, only a small force can shift the steel balls with very small frictional force, and then the steel balls push the ejector pin on the valve body to move. The precise pedal valve has high sensitivity and reliable operation.

Description

Accurate foot valve

Technical field

The utility model relates to a kind of foot-operated pneumatic control valve, and it is supporting that particularly a kind of volume I and clothes, medical treatment, five metals are processed many machining equipments, is used for that pneumatic circuit is carried out single channel and opens and closes the accurate foot valve that control is used.

Background technique

The patent No. 200820086477.6 " safe foot valve ", 200720037078.6 " foot valve, " is though all provide a kind of foot valve, the more and control multiloop that can commutate of its function, but its structure is complicated, cost is higher, also is not suitable in narrow and small regional work or carries out unidirectional control and use.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of accurate foot valve is provided, uses and simple in structure as foot switch, volume is little, highly sensitive, easy to use, low cost of manufacture suits and the supporting use of machining equipment that is installed in narrow and small zone especially.

The technical scheme in the invention for solving the above technical problem is: accurate foot valve, upper and lower cover by having lid spring has inlet, outlet, and the pneumatic valve of relief opening and drive unit are formed, the valve body of described pneumatic valve is fixed on down and covers, and the push rod on the pneumatic valve cooperates with drive unit; Described drive unit by on the steel ball put in the pulling block that covers and the lower cover upper fixed seat cooperate, and steel ball cooperates with push rod; Described pneumatic valve valve body is fixed on down in the fixed base that covers.

Compared with prior art, advantage of the present utility model is: this valve arrangement is simple, part is few, easily fabrication and installation, cost is low, volume is little, just insert in the fixed base when riding down pulling block, the fixed base location is arranged and drive steel ball top push rod and move forward by pulling block, carry out the work of cut-offfing of gas circuit, fix with locating column with lower cover below the valve body, also compress above with the cover plate locating column, it can not moved, therefore as long as very little power just can be stirred the very little steel ball of frictional force, the push rod that is gone again to promote on the valve body by steel ball moves, so it is highly sensitive, reliable operation.

Description of drawings

Fig. 1, structural representation of the present utility model (off working state sectional view).

The plan view of Fig. 2, Fig. 1 (taking away loam cake, cover plate, lid spring).

Fig. 3, structural representation of the present utility model (working state sectional view).

The plan view of Fig. 4, Fig. 2 (taking away loam cake, cover plate, lid spring).

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

The knurling that increases friction is arranged on loam cake 1 outer surface, and the two side front end has fraising, has pulling block 6 its two surfaces to be smooth inclined-plane in the middle of the inwall, and the high boss 2 that rises of blind hole is arranged in the middle of having in the middle of the inwall front end.

Be pasted with anti-skidding, the rubber cushion 21 of reinforcement, iron plate 22 in the middle of lower cover 23 lower surfaces, the hinge post 25 that projection arranged on the two side with on the fraising that covers match, the high boss 2 that rises of blind hole is arranged in the middle of having in the middle of the inwall front end, fixed base 4, step 5, attachment post 24, locating column 27 are arranged in the middle of the rear end.

Two locating columns 27 are also arranged on the lower surface of cover plate 8, and there is the erection column of band through hole the end.

There is the through hole that communicates to cooperate on valve body 15 forward and backward two corresponding surfaces with locating column 27 on cover plate 8 and the lower cover 23.

It is to be the big screw of shoulder hole in the middle of the screw that upper and lower end is arranged on the valve body 15 upper and lower two obverse upper surfaces, and it is P suction port 14 and A air outlet 26 that little screw is arranged on the lower surface.

Lower spring 13, sealing gasket 12, spool 16, O shape circle 11, II shape circle 10, liner 17 are installed in the shoulder hole in the middle of the valve body 15 successively, on the push rod 20 that R exhaust port 19 arranged and be with upper spring 9 insert in the spools 16 and cooperate with sealing gasket 12, also join, and valve gap 18 usefulness screw threads are fixed in the big screw of valve body 15 upper surfaces and connect into whole pneumatic valve with valve gap 18 is sliding.

The vent slot that five equilibrium is arranged on the periphery of sealing gasket 12 has four uniform spileholes on the periphery of spool 16, spilehole communicates with air outlet 26 by horizontal blind hole.

The lip-deep thereafter through hole of valve body 15 usefulness inserts on the locating column 27 on the lower cover 23 from top to bottom, be fixed on the lower cover 23, steel ball 7 is placed on the step 5 of lower cover fixed base 4 front ends, cover plate 8 usefulness tapping screws are fixed on the attachment post 24 of lower cover 23, also insert from top to bottom in the valve body front surface through hole with two locating columns 27 on the lower surface, lid spring 3 is enclosed within on the boss 2, and upper and

lower cover

1,23 is hinged to integral body with the fraising on it, hinge post 25 respectively.

During use, foot-operated loam cake 1 is to lower cover spring 3, pulling block on the loam cake 16 inserts in the fixed base 4 and oppresses steel ball 7 and moves forward simultaneously, by steel ball 7 top push rods 20 push rod is moved forward, and compression upper spring 9, push rod 20 promotes sealing gasket 12 and moves forward, make sealing gasket 12 throw off spool 16, at this moment from suction port 14 air inlets, then gas enters spool 16 from the vent slot of sealing gasket periphery, 26 give vent to anger and carry out work from the air outlet then, through hole R relief opening 19 exhausts from the push rod 20 simultaneously, as shown in Figure 3, Figure 4.

If pin leaves the loam cake 1 of foot valve, then push rod 20, sealing gasket 12 all reset, and sealing gasket 12 is sealed valve core 16 again, and suction port 14 sealed pads 12 stop up gas and can not advance, and then quit work, as shown in Figure 1 and Figure 2.

Claims

1, a kind of accurate foot valve, by the upper and lower cover that has lid spring (3) (1), (23), have inlet, outlet (14), (26), the pneumatic valve of relief opening (19) and drive unit are formed, the valve body of described pneumatic valve (15) is fixed on the lower cover (23), and the push rod on the pneumatic valve (20) cooperates with drive unit; It is characterized in that described drive unit is cooperated with the steel ball (7) of storing in lower cover (23) upper fixed seat (4) by the pulling block (6) on the loam cake (1), and steel ball (7) cooperates with push rod (20); Described pneumatic valve valve body (15) is fixed in the fixed base (4) on the lower cover (23).

2, accurate foot valve according to claim 1 is characterized in that loam cake (1) two side front end has fraising, and lower cover (23) has hinge post (25) on the two side, and upper and lower cover (1), (23) are hinged to integral body by fraising, hinge post (25).

3, accurate foot valve according to claim 1 is characterized in that having on the periphery of sealing gasket (12) vent slot of five equilibrium four uniform spileholes are arranged on the periphery of spool (16).

4, accurate foot valve according to claim 1, it is characterized in that described valve body (15) upper surface also is fixed on cover plate (8) on the attachment post (24) of lower cover (23) with screw, also have two locating columns (27) to insert from top to bottom in the through hole of valve body (15) front surface correspondence on the lower surface of described cover plate (8).

5, accurate foot valve according to claim 1 is characterized in that the fixed base (4) of described lower cover (23) is gone up two locating columns (27) in addition, inserts from the bottom up respectively in the through hole of valve body (15) rear surface two correspondences.