CN2183455Y - Improved liquid-suction head - Google Patents

Abstract

The utility model relates to a liquid suction head with an improved structure, particularly to a suction head with a back flow structure which can prevent the upwards sucked liquid from leaking downwards. The liquid suction head utilizes an elastic valve sheet which is made of plastics and is arranged at the inlet of a liquid storage chamber to replace the traditional method that a ball valve is used to perform the back preventing function.

Description

Improved liquid-suction head

Traditional liquid drawing head as shown in Figure 1, be screwed in the container cover upper end of storaging liquid (emulsion etc.) by screw thread with a container cover (A), again by the action of pushing and discharge nozzle tip (B), make the piston (C) that draws of lower end produce pump-absorb action, pressure spring when pushing (D) is with storing function, when discharging, spring (D) then holds and draws upwards action of piston (C), simultaneously draw liquid in container and upwards flow to liquid-accumulating chamber (F) by inlet tube (E), when pushing nozzle tip (B) once again, liquid in the liquid-accumulating chamber (F) is upwards flowed out for use liquid because of ball valve (G) produces the non-return effect with liquid-accumulating chamber (F) fluid pressure in the ingress by nozzle tip (B).

But above-mentioned ball valve (G) (is generally baton round, iron ball or plastic part) because of mostly being, liquid that it drew has stickiness (as emulsion, shampoo etc.), when these flow of liquid when ball valve (G), can be attached to ball valve (G) surface, make when ball valve (G) falls to liquid-accumulating chamber (F) ingress, lower end, because of the not enough driving fit fully of pressure, be drawn into the liquid in the liquid-accumulating chamber (F), if can't drain out use at once, as long as place a period of time, liquid in the liquid-accumulating chamber (F) promptly can be gradually seepage downwards, reuse when pushing nozzle tip (B) when the compartment time, promptly increasing liquid can't flow out at once.Need be pushed several times more again and just can flow out, and cause user's inconvenience.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part, and a kind of modified model liquid drawing head is provided.

The purpose of this utility model can reach by following measure: a rubber-like valve block is established in ingress, liquid-accumulating chamber lower end, this valve block end face tool one circle scrobicular ring can cooperate with the spring lower end, the center of circle of valve block connects a column valve that protrudes with many curved shape thin slices, and a correcting plate is established on the column valve top.Also can establish a column valve with the connection of curved shape thin slice in the tube head of nozzle tip, this column valve is positioned at the outlet port, upper end of drawing piston.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the plane view of traditional drawing head structure.

Fig. 2 is a plane view of the present utility model.

Fig. 3 and Fig. 4 are the plane view in the utility model draw state.

Fig. 5 is the three-dimensional view of the utility model valve block element.

The utility model is described further below in conjunction with drawings and Examples:

See also Fig. 2, the utility model includes a nozzle tip 1, and draws elements compositions such as piston 2, a spring 3, a liquid-accumulating chamber 4, a retaining ring 5 and a container cover 6, wherein nozzle tip 1 is the element that a confession user pushes draw liquid, its upper end is a press part 11, external diameter is given prominence to a nozzle pipe 12, nozzle pipe 12 communicates with axle center one pipeline 13 of nozzle tip 1, and pipeline 13 bottom diameters of nozzle tip 1 are an engagement portion 14.Draw piston 2 and be an open circles tubulose, its top external diameter is an engagement portion 21 that can fix mutually with the engagement portion 14 of nozzle tip 1, spring 3 can be fastened in and draw piston 2 lower ends, then with draw piston 2 and be positioned over liquid-accumulating chamber 4 inside jointly, liquid-accumulating chamber's 4 upper end external diameters have a flange 41, this flange 41 can be for placing container cover 6, and be provided with engagement portion 51 in liquid-accumulating chamber 4 upper ends and fix, make container cover 6 be fixed in 4 of retaining ring 5 and flanges, liquid-accumulating chamber 4 lower ends can hold an inlet tube 7, promptly be tightened in the top of container (not shown) with the internal thread 61 of container cover 6, and be inserted in the liquid that stores in the container with inlet tube 7, aforementioned structure is roughly identical with drawing head commonly used, so this outline only.Major character of the present utility model is, the ball valve that tradition is exercised the non-return effect with fluid pressure replaces it with integrated valve block 8, this valve block 8 is made with plastics, has elasticity, valve block 8 end face external diameter circumference are a round recessed 81, but these round recessed 81 ammunition feed springs 3 bottoms snap in, make valve block 8 fixedly be pressed on inlet 43 tops of liquid-accumulating chamber 4 bottoms because of spring 3 elastic reactions, the center of circle of valve block 8 connects a sealing cylindrical valve 83 that protrudes downwards with the curved shape thin slice 82 that many equal angles are provided with at interval, column valve 83 tops are provided with a correcting plate 84, and this column valve 83 can block to go into 43 because of the characteristic of its thin slice 82 materials itself and the formed elastic reaction of curved shape protrude at any time downwards.When the press part 11 of pushing nozzle tip 1 downwards, be that interlock draws piston 2 downward pressure springs 3, in order to storing function, when discharging nozzle tip 1 pressure, spring 3 is about to draw upwards jack-up of piston 2, liquid-accumulating chamber 4 promptly produces pump suction amount the liquid in the container is upwards sinked liquid-accumulating chamber 4 by inlet tube 7 at this moment, simultaneously, the column valve 83 of valve block 8 is also picked up (as shown in Figure 4) because of suction, make inlet 43 be open shape, liquid is passed through smoothly, be drawn to liquid-accumulating chamber 4 and draw piston 2 and be back to original position and be static shape when liquid draws, valve block 8 suffered suction disappear, and column valve 83 moves downwards because of its elasticity immediately and blocks in inlet 43, because of the elastic reaction of valve block 8, column valve 83 can closely block inlet 43 really.Moreover a vertical column valve 15 that is shaped in nozzle pipe 12 can be set axially also in the pipeline 13 of nozzle tip 1 of the present utility model, this column valve 15 is with respect to one of upper end that draws piston 2 outlet 22, this column valve 15 also can be with plastics rubber-like material and makes, be connected in the nozzle tip 1 with curved shape thin slice 16, column valve 15 can seal outlet 22 at any time because of its elasticity, elastic reaction because of thin slice 16, in draw liquid, column valve 15 also can upwards rouse, make outlet 22 be an open shape (as shown in Figure 3), liquid is passed through smoothly.

The phenomenon of seepage takes place with gravity sealing meeting because of adhering to mucus in the ball valve that the utility model has been eliminated traditional type, and, therefore the utlity model has very big advantage and practicability downwards because the upper end also is equipped with the liquid that is drawn into liquid-accumulating chamber when column valve can be avoided standing upside down and can be flowed out again.

Claims (2)

1, a kind of modified model liquid drawing head, comprise: nozzle tip, draw piston, spring, liquid-accumulating chamber, retaining ring and container cover etc., it is characterized in that: the ingress of described liquid-accumulating chamber lower end is provided with a rubber-like valve block, this valve block end face has a circle scrobicular ring and cooperates with the spring lower end, the center of circle of valve block connects a column valve that protrudes with many curved shape thin slices, and a correcting plate is established on the column valve top.

2, modified model liquid drawing head according to claim 1 is characterized in that: also can establish a column valve with many curved shape thin slices connections in the tube head of described nozzle tip, this column valve is positioned at the outlet port, upper end of drawing piston.

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