CN202118306U

CN202118306U - Three-position hand control valve

Info

Publication number: CN202118306U
Application number: CN2011202154114U
Authority: CN
Inventors: 王世忠
Original assignee: NINGBO YADEKE AUTOMATIC CHEMICAL INDUSTRY Co Ltd
Current assignee: NINGBO YADEKE AUTOMATIC CHEMICAL INDUSTRY Co Ltd
Priority date: 2011-06-23
Filing date: 2011-06-23
Publication date: 2012-01-18
Anticipated expiration: 2021-06-23

Abstract

The utility model relates to a three-position hand control valve and aims to provide a three-position hand control valve with two working air flow passages. The three-position hand control valve comprises a valve body and a valve drive part; the valve drive part comprises a shell; a knob is arranged on the top of the shell; a drive rotor connected with the knob is arranged in an inner chamber of the shell; two columnar air inlet chambers and two columnar air outlet chambers are formed in the valve body; the air inlet chambers are correspondingly communicated with the air outlet chambers one by one; a through hole is formed between the two air inlet chambers for connecting the two air inlet chambers; the valve body is provided with an air inlet communicated with the air inlet chamber, two air outlets which are correspondingly communicated with the air outlet chamber one by one and two bottom covers which respectively close the openings of the air inlet chambers; each air inlet chamber is internally provided with a plug; a spring is arranged between the plug and the bottom cover; each air outlet chamber is internally provided with a shaft core; a spring is arranged between the shaft core and the plug; the top end of the shaft core leans against the bottom surface of the drive rotor; and one side the bottom surface of the drive rotor is pressed down. The three-position hand control valve has the advantages of having simple structure, avoiding influence caused to the airflow and being suitable for promotion and application.

Description

Three hand control valves

Technical field

The utility model relates to a kind of valve, particularly relates to a kind of hand control valve that has two working air current paths, three kinds of on off states (promptly three).

Background technique

Existing on the market three hand control valves that have two working air current paths are by valve body and valve drive portion two-part at present; Connect iron plate through two; Couple together with screw, because of the tolerance of connection iron plate, and the accumulation that connects the tolerance of screw hole; Cause the axle core journey error of valve body serious, influence flow; Said valve body is put the hand control valve valve body by two independent three port two positions and is formed; Two valve body faying surfaces respectively are drilled with a vent; Use the sealing of O shape ring between the vent; Therefore with the amalgamation of screw ways of connecting together, two valve bodies increase the operations of boring and processing O shape annular groove, and wild effect such as gas leakage is arranged between two valve bodies; Said valve drive portion is formed by combining knob, rotor, driving rotor, fixed body and fixed iron piece; Knob is connected by overhead structure with rotor, drives between rotor and the knob to use screw to be connected, drives that four little male and fomale(M&F)s of use cooperate the location between rotor and the rotor; Be connected through screw between fixed body and the fixed iron piece; And valve body and valve drive portion can not separate separately, and general structure is complicated, assembles loaded down with trivial details.

Chinese patent notification number CN2435593Y discloses a kind of Two-way flow ball valve, and it is made up of two ordinary ball valve, and these two ball valves are connected as a single entity, and a shared entrance point.This Two-way flow ball valve is simply two valves to be combined, and is not the two discharge control valves of integral type truly, need utilize the knob of two valves to be used during operation and could realize the gas circuit switching.

Summary of the invention

The purpose of the utility model is to provide a kind of three hand control valves that have two working air current paths that are made up of valve body and valve drive portion, and with the complex structure that exists in the solution background technique, and axle core journey error is bigger, influences the problem of flow.

To achieve these goals, the technological scheme of three hand control valves of the utility model is: a kind of three hand control valves comprise valve body and valve drive portion; Said valve drive portion comprises case, and the top of this case is provided with knob, and the inner chamber of this case is provided with the driving rotor that is connected with said knob; Be provided with the air-inlet cavity of two columns and the outlet chamber of two columns in the said valve body; The diameter of said air-inlet cavity is greater than the diameter of outlet chamber, and said air-inlet cavity and dead in line and conducting corresponding one by one with outlet chamber have the through hole conducting between said two air-inlet cavitys; Said valve body is provided with a suction port that is conducted with air-inlet cavity, two and the corresponding one by one air outlet that is conducted of outlet chamber and two bottoms that seal the air-inlet cavity opening respectively; Be equipped with chock plug in each said air-inlet cavity, this chock plug middle part is thicker than two ends, said chock plug the diameter at thick position between the diameter of air-inlet cavity and outlet chamber; Be provided with the spring that holds out against the two between said chock plug and the bottom; Be equipped with a core in each said outlet chamber, the diameter of this core and the diameter of outlet chamber are adaptive, are provided with spring between said axle core and the chock plug; The top of said axle core offsets with the bottom surface that drives rotor, and is protruding under one side of said driving rotor bottom surface.The principle of three hand control valves of the utility model is: when valve body is freely stretched out in axle core top; Closed condition for these three hand control valves; A this moment axle core bottom does not contact with chock plug, and chock plug is owing to the spring action of bottom, is pressed onto on the step that air-inlet cavity and outlet chamber join; Cause air-inlet cavity not to be communicated with, thereby outlet chamber can't get into the working state of ventilation with outlet chamber; When with the hand turning knob; Knob drives the driving rotor with its interlock; The side pressure that this driving rotor presses down is to the top of one of them core, thereby the pushing shaft core moves down, and and then promote chock plug and also move down; Air-inlet cavity and outlet chamber have just been connected like this, and be the working state of one of them current path this moment; In like manner, when rotating in the opposite direction, can realize the working state of another current path with the hand turning knob.Three hand control valve compact structures of the utility model are simple, and this kind structure has been reserved enough downward strokes of axle core in addition, avoided axle core stroke to produce error, thereby avoided influencing flow.

As preferably; Said three hand control valves also are provided with the exhaust passage, and the structure that this exhaust passage relates to comprises: said bottom has blind hole, and the diameter of the diameter of this blind hole and chock plug bottom is adaptive; Said chock plug bottom is inserted blind hole and is formed the chamber of sealing; Be provided with first section exhaust cavity of said chamber of conducting and outlet chamber in the said chock plug, an end opening of this first section exhaust cavity is located at the chock plug bottom surface, and the other end opening of this first section exhaust cavity is located at the side at chock plug top; Said axle in-core is provided with second section exhaust cavity; One end opening of this second section exhaust cavity is located at a core bottom surface, and the other end opening of this second section exhaust cavity is located at a side at core top, has relief opening on the sidewall of said case.Under the situation of this exhaust passage not, when chock plug moved down, the gas in the chamber of following face closure can't be discharged, and causes pressure increasing, possibly cause the knob difficulty, therefore designed this exhaust passage.When chock plug moved down, the gas in the chamber can release from relief opening along the exhaust passage, does not influence manually-operable.

As preferably, the step surface that said air-inlet cavity and outlet chamber join is provided with annular boss, and said chock plug waist location is provided with the O RunddichtringO towards the side ring surface of annular boss, and this O RunddichtringO is corresponding with the position of annular boss.The effect that the O RunddichtringO can play sealing better is set.

As preferably, said chock plug end face is provided with sealing gasket, and the sealing pad can cover the bottom opening of second section exhaust cavity fully.The effect that sealing gasket can play sealing better is set.

As preferably, the abutted surface of said bottom and air-inlet cavity is provided with the O RunddichtringO.The effect that the O RunddichtringO can play sealing better is set.

As preferably, the abutted surface of said chock plug and bottom is provided with the O RunddichtringO.The effect that the O RunddichtringO can play sealing better is set.

As preferably, the abutted surface of said axle core and outlet chamber is provided with the O RunddichtringO.The effect that the O RunddichtringO can play sealing better is set.

As preferably; Have tapped through hole on said case one sidewall; Be provided with spring seat, spring and steel ball in this tapped through hole from outside to inside successively, on said driving rotor cylinder, be distributed with three arc grooves adaptive with steel ball, the big I of this arc groove is held a smaller part sphere of steel ball.This structure Design purpose is operator's consideration for convenience, and three arc grooves are preset in closed condition and open respectively on the position of two current paths, and the operator rotate in place, and steel ball just snaps in arc groove, and it is fast convenient to operate, good positioning effect.

The beneficial effect of three hand control valves of the utility model is: compact structure is simple, and has reserved enough downward strokes of axle core, has avoided axle core stroke to produce error, thereby has avoided influencing flow.

Description of drawings

Fig. 1 is a kind of structural representation of three hand control valves of the utility model;

Fig. 2 is the longitudinal sectional view of three hand control valves of the utility model, the neutral position of three hand control valves of its expression, i.e. closed condition;

Fig. 3 is the A-A view among Fig. 2;

Fig. 4 is for driving the structural representation of rotor.

Label is respectively among the figure: 1.O RunddichtringO 2. springs 3. suction ports 4. air outlets 5. cases 6. drive 14. cores of rotor 7. pad 8. arc grooves, 9. hold-doun nut 10. knobs, 11. spring seat 12. steel balls, 13. sealing gaskets, 15. valve bodies, 16. plugs, 17. relief openings, 18. bottoms, 19. chock plugs, 20. bolts, 21. nuts.

Embodiment

Below through embodiment and combine accompanying drawing that the technological scheme of the utility model is done further to specifically describe.

Embodiment:

As shown in Figure 1, a kind of three hand control valves comprise valve body 15 and valve drive portion; This valve drive portion comprises case 5, and this case 5 is connected with nut 21 through bolt 20 with valve body 15, indentation, there and attaching nut 21 that said bolt 20 is opened through case 5 sides from the bottom of valve body 15 always; The outer cylinder on said case 5 tops is processed with outside thread, connects the pad 7 of the multiple thickness of female hold-doun nut 9 and outfit on it, has relief opening 17 on the sidewall of said case 5 bottoms; Knob 10 is equipped with at the top of this case 5, and like Fig. 2, shown in Figure 3, the inner chamber of this case 5 is equipped with the driving rotor 6 that is connected with said knob 10 bottom seizing types; As shown in Figure 4, convex into two planes under this driving rotor 6 bottom surfaces one side with drop, bigger plane is greater than driving the half the of rotor 6 bottom surfaces; Two planes connect transition through the inclined-plane, have tapped through hole on said case 5 one sidewalls, and spring seat 11, spring and steel ball 12 are housed in this tapped through hole from outside to inside successively; Spring seat 11 is threaded with tapped through hole, on said driving rotor 6 cylinders, is distributed with three arc grooves 8, is separated by 45 ° between the adjacent arc groove 8; The inner sunken face of this arc groove 8 can hold a smaller part sphere of steel ball 12; In order to eliminate the offset deviation of steel ball 12 above-below directions, thus arc groove 8 is expanded along the vertical direction, as shown in Figure 4.Be provided with the air-inlet cavity of two columns and the outlet chamber of two columns in the said valve body 15, the diameter of said air-inlet cavity is greater than the diameter of outlet chamber, and said air-inlet cavity and outlet chamber respective axes one by one overlap and conducting; Have annular boss on the step surface that said air-inlet cavity and outlet chamber join, have a through hole conducting between two air-inlet cavitys, and the hole plug that stays in valve body 15 sides will process through hole with plug 16 time; Have a suction port 3 that is conducted with air-inlet cavity on said valve body 15 1 sides, have two air outlets 4 at its relative another side, this air outlet 4 is conducted with two outlet chambers separately, and the bottom 18 of two each self-enclosed air-inlet cavity openings also is equipped with in said valve body 15 bottom surfaces; Said bottom 18 is provided with O RunddichtringO 1 with the abutted surface of air-inlet cavity, and these bottom 18 end faces have blind hole, and chock plug 19 all is housed in each air-inlet cavity; The waist of this chock plug 19 is thicker than two ends, and the diameter of the waist of this chock plug 19 is between the diameter of air-inlet cavity and outlet chamber, and the diameter of these chock plug 19 upper ends is less than the diameter of outlet chamber; The diameter of these chock plug 19 lower ends is less than the diameter of air-inlet cavity, and the blind hole that insert on the bottom 18 these chock plug 19 lower ends is also adaptive with it, has formed the chamber of sealing; Have first section exhaust cavity of said chamber of conducting and outlet chamber in the said chock plug 19, an end opening of this first section exhaust cavity is located at chock plug 19 bottom surfaces, and the other end opening of this first section exhaust cavity is located at the side at chock plug 19 tops; On the abutted surface of this chock plug 19 and bottom 18 the O RunddichtringO is housed also, said chock plug 19 waist locations also are equipped with the O RunddichtringO on the side ring surface of annular boss, and this O RunddichtringO is corresponding with the position of annular boss; On said chock plug 19 end faces sealing gasket 13 is housed; Be provided with the spring 2 that holds out against the two between said chock plug 19 and the bottom 18, this spring 2 is enclosed within on the chock plug 19, and this spring 2 is pressed on chock plug 19 on the annular boss; A core 14 all is housed in each outlet chamber; Said outlet chamber is cascade, is provided with the little ladder of twice altogether, and its diameter reduces with ladder from bottom to top; The diameter of said axle core 14 bottoms is less than the diameter of the outlet chamber of corresponding position; The diameter of said axle core 14 upper part diameter and outlet chamber is adaptive everywhere with stepped change, and stretch out outside the end face of valve body 15 on said axle core 14 tops, and offset with the bottom surface that drives rotor 6; Have second section exhaust cavity in the said axle core 14; One end opening of this second section exhaust cavity is located at a core 14 bottom surfaces, and the other end opening of this second section exhaust cavity is located at the side at a core 14 tops, and the size of the sealing gasket 13 at said chock plug 19 tops can cover the opening of a core 14 bottom surfaces fully; Also be provided with spring between said axle core 14 and the chock plug 19; This spring upper end is enclosed within a core 14 lower ends, and this spring lower end is enclosed within the chock plug upper end, and axle core 14 compressed makes itself and the ladder place applying of outlet chamber.

During use, perforate on the panel of working site is earlier outwarded winding hold-doun nut 9 then; Select to take the pad 7 of suitable thickness according to the thickness of panel; Penetrate the case 5 of three hand control valves in the hole from the top then, the nut 9 that is tightened has at last so just fixed three hand control valves; All assemble gas pipeline to suction port 3, air outlet 4 then, can realize the switch of air-flow afterwards through the knob on three hand control valves.

Above-mentioned described specific embodiment only is that the preferable examples explanation is done in the design of the utility model.Any modification of being made within all spirit and principles at the utility model or replenish or be equal to alternatively all should be included within the protection domain of the utility model claim.

Claims

1. three hand control valves comprise valve body and valve drive portion, and said valve drive portion comprises case; The top of this case is provided with knob, and the inner chamber of this case is provided with the driving rotor that is connected with said knob, it is characterized in that: be provided with the air-inlet cavity of two columns and the outlet chamber of two columns in the said valve body; The diameter of said air-inlet cavity is greater than the diameter of outlet chamber, and said air-inlet cavity and dead in line and conducting corresponding one by one with outlet chamber have the through hole conducting between said two air-inlet cavitys; Said valve body is provided with a suction port that is conducted with air-inlet cavity, two and the corresponding one by one air outlet that is conducted of outlet chamber and two bottoms that seal the air-inlet cavity opening respectively; Be equipped with chock plug in each said air-inlet cavity, this chock plug middle part is thicker than two ends, said chock plug the diameter at thick position between the diameter of air-inlet cavity and outlet chamber; Be provided with the spring that holds out against the two between said chock plug and the bottom; Be equipped with a core in each said outlet chamber, the diameter of this core and the diameter of outlet chamber are adaptive, are provided with spring between said axle core and the chock plug; The top of said axle core offsets with the bottom surface that drives rotor, and is protruding under one side of said driving rotor bottom surface.

2. three hand control valves according to claim 1; It is characterized in that: said three hand control valves also are provided with the exhaust passage, and the structure that this exhaust passage relates to comprises: said bottom has blind hole, and the diameter of the diameter of this blind hole and chock plug bottom is adaptive; Said chock plug bottom is inserted blind hole and is formed the chamber of sealing; Be provided with first section exhaust cavity of said chamber of conducting and outlet chamber in the said chock plug, an end opening of this first section exhaust cavity is located at the chock plug bottom surface, and the other end opening of this first section exhaust cavity is located at the side at chock plug top; Said axle in-core is provided with second section exhaust cavity; One end opening of this second section exhaust cavity is located at a core bottom surface, and the other end opening of this second section exhaust cavity is located at a side at core top, has relief opening on the sidewall of said case.

3. three hand control valves according to claim 2; It is characterized in that: the step surface that said air-inlet cavity and outlet chamber join is provided with annular boss; Said chock plug waist location is provided with the O RunddichtringO towards the side ring surface of annular boss, and this O RunddichtringO is corresponding with the position of annular boss.

4. three hand control valves according to claim 2 is characterized in that: said chock plug end face is provided with sealing gasket, and the sealing pad can cover the bottom opening of second section exhaust cavity fully.

5. three hand control valves according to claim 2, it is characterized in that: the abutted surface of said bottom and air-inlet cavity is provided with the O RunddichtringO.

6. three hand control valves according to claim 2, it is characterized in that: the abutted surface of said chock plug and bottom is provided with the O RunddichtringO.

7. three hand control valves according to claim 2 is characterized in that: the abutted surface of said axle core and outlet chamber is provided with the O RunddichtringO.

8. according to each described three hand control valves of claim 1 to 7; It is characterized in that: have tapped through hole on said case one sidewall; Be provided with spring seat, spring and steel ball in this tapped through hole from outside to inside successively; On said driving rotor cylinder, be distributed with three arc grooves adaptive with steel ball, the big I of this arc groove is held a smaller part sphere of steel ball.