CN2282929Y

CN2282929Y - Small-size pipet controller

Info

Publication number: CN2282929Y
Application number: CN 96246175
Authority: CN
Inventors: 冯国光
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-26
Filing date: 1996-12-26
Publication date: 1998-06-03
Anticipated expiration: 2006-12-26

Abstract

The utility model relates to a suction tube device. The utility model is a small-size suction tube controller provided with a sucking quantity dial gauge and sucking and discharging liquid quantitatively. An airtight type cavity body composed of a guide sleeve, a corrugated tube, a rubber sleeve, a flange disc and a clamping head is positioned between sleeves bodies formed by an internal thread sleeve and an external thread sleeve, and a spring is arranged between the corrugated tube of the airtight type cavity body and the sleeve bodies. The utility model has the advantages that the required liquid quantity can be correctly sucked and discharged and the utility model facilitates liquid sucking, liquid discharging, liquid dropping, etc. The operation is simple, the accuracy is high, and the utility model is especially suitable for the requirement of quantitative and continuous liquid sucking and liquid discharging.

Description

Small-sized suction controller

The utility model relates to a kind of suction tube device, and it is to have the quantitative suction of suction amount dial gauge, the small-sized suction controller of discharge opeing.

Currently in chemical experiment and chemical examination work, get, discharge opeing carries out with the glass tube and the measuring cup of an end band rubber ball cavity usually, inhales each time, the operator all need observe scale during discharge opeing, it is difficult for absorption that once can be correct or discharges required liquid measure.Especially not only quantitatively but also continuously drawing and then inconvenient unusually during discharging.

The purpose of this utility model provides and a kind ofly is easy to imbibition, discharge opeing, drop, and the suction tube device of suction, discharge capacity indication is arranged.

Technical essential of the present utility model is:

It is by fairlead (2), bellows (3), rubber sleeve (6), the air hermetic cavity that ring flange (7), chuck lid (8) are formed places between the body of inner screw sheath (1) and external thread sleeve (11) formation, is provided with spring (5) between bellows of air hermetic cavity (3) and body.The utility model is at the internal and external threads inner room that is threaded, and the cavity that has a bellows to constitute, this cavity and fairlead are integral and move with guiding interplanting synchronization lifting.Be carved with suction amount dial gauge at the fairlead cylindrical, borrow the volume size of rotating inner screw sheath and finishing the change cavity, measure predefined purpose to reach suction; The spring that cavity sets back is disposed between the internal and external threads cover, with the usefulness that sets back as bellows.

The utlity model has absorption that can be correct or discharge required liquid measure, be easy to advantages such as imbibition, discharge opeing, drop.It is simple to operate, and degree of accuracy height especially is applicable to quantitatively again the needs of imbibition or discharge opeing continuously.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is provided with the structural representation of second opening for the utility model cavity top;

Fig. 3 is the B-B view of Fig. 2;

Fig. 4 is the fairlead high scale line schematic diagram among Fig. 2.

Below in conjunction with accompanying drawing suction controller is illustrated:

Fairlead (2), bellows (3), rubber case (6), ring flange (7), chuck lid (8) are formed an air tight housing (referring to that the junction is air tight) as can be seen from Fig. 1.Ring flange (7) is assembled into one with external thread sleeve (11), it is provided with a rubber case (6) and chuck lid (8) in stomidium down, this rubber case (6) is the convex cylindrical shape, its protuberance is loaded in ring flange (7) lower end, and its step part contacts with chuck lid (8) inner hole wall, and this protuberance inboard is one can bear the suction pipe in different apertures, and oral area is bell shape hole, step part is a ring wall, and this ring wall is provided with two or more not only equity, but also lips of face-off.Therefore, when the oral area of a suction pipe inserts in this rubber case (6) and with chuck lid (8) when screwing, the oral area of this suction pipe is promptly clamped by the lip that shrinks along this chuck lid (8) inwall compressing, and is closed in this bell shape hole, thereby reaches the suction pipe oral area is connected in airtight cavity with air hermetic.

Bellows (3) upper end cements with fairlead (2) and realizes sealing, its lower end is fastened on ring flange (7) seam it with iron wire, realize its sealing by rubber sleeve (10), with nut (9) an above-mentioned integral body is connected on the external thread sleeve (11), one column spring (5) is set between external thread sleeve (11) and fairlead (2) then, to be screwed in the inner screw sheath (1) that transparent plastic is made on the external thread sleeve (11) again, when pushing the boss at fairlead (2) top with thumb, along with bellows (3) and spring (5) are compressed and move down, because of being, fairlead (2) and external thread sleeve (11) be slidingly matched, so fairlead (2) is mobile vertically downward.Fairlead (2) Lower Half is three claw-likes, and its three-jaw passes (11) three strip hole (see figure 3)s of external thread sleeve respectively, and this design is the precision that influences suction, discharge opeing when avoiding pushing because of bellows is crooked.

When inner screw sheath (2) clockwise direction or when counterclockwise rotating, the top of inner screw sheath (1) descends or rises with respect to the top of external thread sleeve (11).In other words, volume in the bellows (3) reduces or increases, on fairlead (2) excircle, establish one group of graduation mark (see figure 4), this graduation mark liquid volume that time institute draws or discharges then corresponding to fairlead (2) place stroke h, be pointer with fairlead (2) ring flange lower end upper thread simultaneously, to read, to inhale or to discharge the quantity of liquid.It is big or small irrelevant to discharge liquid measure and pressing force in the air tight housing, and this function is because fairlead (2) becomes to be slidingly matched with inner screw sheath and there are enough length institutes at the position of leading extremely.

The boss on fairlead (2) top can install additional be a lateral aperture with its center line on vertical communicating, rubber stopper (12), a knob (13) is adorned in the hole within it, when with the thumb level when (13) are turned round in pushing, its bottom is just pushed the conical ring of rubber stopper (13) open and its slit A is communicated with atmosphere with bellows (3) inner chamber and is reached the fall purpose of liquid of nature, and the elastic force because of rubber stopper (12) when stopping to push sets back knob (13).It is to have one can open and close second opening that is communicated with atmosphere at the air hermetic cavity, and this opening is achieved with rubber stopper (12) conical ring hermetically-sealed construction by the structure of the slit on the knob (13).

The operation of suction controller shown in the figure is as follows: at first inner screw sheath (1) is done rotation counterclockwise, fairlead (2) rises the corresponding graduation mark of its desire suction liquid volume to the indication timberline thereupon, i.e. fairlead (2) ring flange lower surface.Then the boss on the fairlead (2) is pressed into bottom dead centre and also this suction pipe mouth is inserted in the liquid that will be drawn, loosen fairlead (2) upper end boss then, make it restore to relaxation state, thereby liquid is sucked in the suction pipe.Thereafter can be under the situation of the boss of slowly pushing fairlead (2) upper end with this suction pipe in fluid discharge go out, still can press the boss of fairlead (2) upper end after the emptying again, repeat above-mentioned steps and not only quantitatively but also continuously draw and discharge to reach; Use knob (13) with the thumb pushing, gas is entered in the suction pipe by slit A, because of face liquid nationality gravity flows out outside the suction pipe, so and the discharging of reaching quantitative liquid.Also can one thumb push that button (13) one side is visual reduces on another graduation mark from a graduation mark.As reducing to 15 by 20, thereby finish the function of sprinkling liquid between the scale.

Claims

1. small-sized suction controller, has cavity, it is characterized in that covering the air hermetic cavity that (8) are formed by fairlead (2), bellows (3), rubber sleeve (6), ring flange (7), chuck, place between the body that inner screw sheath (1) and external thread sleeve (11) form, between the bellows (3) of air hermetic cavity and body, be provided with spring (5).

2. according to right 1 described small-sized suction controller, it is characterized in that establishing one group of graduation mark on fairlead (2) excircle of air hermetic cavity.

3. according to right 1 described small-sized suction controller, it is characterized in that having one can open and close second opening that is communicated with atmosphere on air hermetic cavity top, this opening is achieved with rubber stopper (12) conical ring hermetically-sealed construction by the structure of the slit on the knob (13).