CN2748166Y - Fully enclosed safety liquid handling apparatus - Google Patents

Abstract

The utility model relates to a fully enclosed safety liquid handling apparatus for volatile liquid, comprising a liquid guide duct, an air guide duct, a rubber plug, a rubber cover device, a hood, etc, and the liquid guide duct and the air guide duct are both connected by a rigid duct and a soft duct. One end of the liquid guide duct and one end of the air guide duct are respectively arranged in the rubber plug, and the other end of the liquid guide duct and the other end of the air guide duct are arranged in the rubber cover device. When the liquid is removed, the rubber plug and the rubber cover device are used to seal the outlets of two containers, making the liquid and the air in the two containers mutually interchanged and completely insolated from the external environment. Consequently, the utility model can completely avoid the volatile pollution in the process of flowing of the liquid. The fully enclosed safety liquid handling apparatus for volatile liquid has the advantages of reasonable structure, convenient use, reliability, better effect of handling liquid, etc. The utility model can be extensively used in the safety transference for the volatile harmful liquid (such as concentrated hydrochloric acid, strong ammonia, etc.) and the volatile inflammable dangerous liquid (such as gasoline, benzene, etc.).

Description

The fully-enclosed safe pipettor

Affiliated technical field

The utility model relates to a kind of pipettor of volatile liquid, particularly a kind of fully-enclosed safe pipettor, it is applicable to that mainly volatility is harmful to liquid (as concentrated hydrochloric acid, concentrated ammonia liquor, red fuming nitric acid (RFNA), dense bromine water or the like) and the safe transfer of the inflammable dangerous liquid of volatility (as gasoline, benzene, ether, acetone or the like) between different vessels.

Background technology

Harmful liquid of volatility and inflammable dangerous liquid in the transfer process, exist the problem of a large amount of volatilizations in the prior art between different vessels, and this not only causes serious environmental to be polluted, harm people's health, the safety that is also threatening people's lives and properties.The existing volatility pollution problem that utilizes ventilation equipment to solve to move in the liquid process, the just local environment that its result improves, the transfer of pollutant does not have help to improving wholly human's environment, also easily causes the forfeiture of effective ingredient.The safe pipettor (patent No. ZL99215945.8) that now utilizes universal safety pipettor (patent No. ZL99215944.X) in addition and be used for the harmful liquid of volatility solves the volatilization pollution problem that moves liquid, though the effect of being significantly improved, but, the original air in the container of accepting liquid spills in the surrounding air owing to being moved into squeezing of liquid, therefore it has a small amount of harmful substance contaminated environment unavoidably, the water column that above-mentioned two kinds of pipettors of while seal also hampers air and enters the container that shifts out liquid smoothly, cause the phenomenon that pressure has interruption to reduce in the container, thereby influence moves the speed and the uniformity that flow of liquid in the liquid.The water column of sealing usefulness also will be subjected to the pollution of volatile materials, and time one length will lose efficacy, and therefore, the use that they are placed on the container that is moved out of liquid for a long time is affected, and this also causes inconvenience to a certain degree in the use.

Summary of the invention

The purpose of this utility model is to overcome existing above-mentioned deficiency in the prior art, and provides a kind of rational in infrastructure, and sealing is strong, and is easy to use and reliable, moves the fully-enclosed safe pipettor of liquid better effects if.

The utility model proposes purpose can be achieved through the following technical solutions: this totally-enclosed pipettor is linked to each other with hard conduit by soft conduit by two and forms composite conduit, biforate rubber stopper, rubber cover device, cover cap etc. and form.The soft conduit in the composite conduit and the quantity and the length of hard conduit, hard conduit right and wrong, visual concrete condition is determined.Using hard conduit is for strengthening the resistance to corrosion and the effect of anti-floating power of conduit, and it can be selected for use not and tubing such as the glass of liquid generation chemical reaction, metal, plastics.Using soft conduit is for easy to use and have a flexibility, it can select tubing such as sebific duct, polyvinyl chloride hose for use, lay soft absorbent material such as gauze etc. in the glue lid, available water is moistening to strengthen sealing in case of necessity, take time long to move liquid at every turn, the also available plug of rubber cover device replaces.A two composite conduits end separately is arranged in the plug, and the other end separately is arranged in the rubber cover device, and wherein one is used as wireway, and another root is as catheter, and the internal diameter of the comparable catheter of internal diameter of wireway is smaller.When moving liquid, it is the container outlet that need shift out liquid that plug places, and the wireway mouth of pipe that is positioned at plug one end should be higher than liquid level, and this end catheter mouth of pipe then should be positioned at the bottom of liquid.Rubber cover device is placed in the vessel port of accepting liquid, be positioned at the catheter mouth of pipe that glue covers an end stretch out Jiao Gai should be more longer slightly than wireway, has the phenomenon generation that small amount of liquid sucks wireway in the time of can preventing to move liquid, but two mouths of pipe stretch out Jiao Gai should be not long, usually only slightly stretching out Jiao Gai gets final product, by tight Jiao Gai, promptly can be used for moving liquid then.When not moving liquid at ordinary times, it also can place on the container that need shift out liquid for a long time, and the outlet that only needs two caves cover cap to seal wireway and catheter simultaneously gets final product.Shift out the vessel volume size of liquid and quantity, the position of container outlet according to need, this pipettor also can select different modes to move liquid, therefore also there is certain difference in the pipettor that principle is identical on concrete the making, can be divided into classifications such as Dumpage type, hydrocone type, valve-type.

The basic principle of this pipettor is: carrying out between two containers under the totally enclosed condition, being converted into kinetic energy by gravitional force makes one's own side's liquid flow into the other side's container, utilize atmospheric density less than fluid density again, make the air in the cubitainer is flowed back to one's own side's container, increase the pressure that one's own side has reduced because of liquid shifts out, make this liquid gas transposition to move liquid smooth, avoid again that any of volatile materials escapes in the exchange process.The present invention compared with prior art has the following advantages and effect: 1, reasonable in design, realize the totally-enclosed liquid that moves, qualitative leap is arranged technically, can guarantee non-volatility harmful substance effusion fully in the liquid flow process, both overcome environmental pollution, prevent devolatilization again; 2, can place on the container for a long time, and, use more convenient only with the sealing of a cover cap; 3, making is easier; Flow velocity increase and more steady when 4, moving liquid.

Description of drawings

Description of drawings is as follows:

Fig. 1 is a Dumpage type fully-enclosed safe pipettor, and Fig. 2 is a hydrocone type fully-enclosed safe pipettor, and Fig. 3 is a valve-type fully-enclosed safe pipettor.

Referring to Fig. 1, this device is made up of catheter 1, wireway 2, rubber cover device 3, biforate rubber stopper 4, cover cap 5.Catheter is made up of bending glass-tube 1-1, sebific duct 1-2, short glass-tube 1-3, wireway is made up of bending glass-tube 2-1, sebific duct 2-2, short glass-tube 2-3, rubber cover device is made up of glue lid 3-1 and soft absorbent material 3-2, for the resistance to corrosion that strengthens conduit and be convenient to control flow sebific duct 1-2, short glass-tube 1-3 and sebific duct 2-2, short glass-tube 2-3 also can save need not, and rubber cover device is directly installed on bending glass-tube 1-1 and the 2-1.

Referring to Fig. 2, this device is made up of catheter 1, wireway 2, rubber cover device 3, biforate rubber stopper 4, ear washing bulb 5, cover cap 6.Wherein 1-1,1-3,1-5,1-7,2-1,2-3,2-5,2-7 are grass tube, and 1-2,1-4,1-6,2-2,2-4,2-6 are sebific duct, and 3-1 is Jiao Gai, and 3-2 is soft absorbent material.

Referring to Fig. 3, this device is by catheter 1, wireway 2, rubber cover device 3, single hole plug 4, single hole plug 5, cover cap 6 are formed, catheter is by valve 1-1, sebific duct 1-2 and hard conduit 1-3 form, the valve setting can stand bigger hydraulic pressure and control flowing of liquid, and wireway is made up of stereoplasm tube 2-1,2-3 and sebific duct 2-2, and rubber cover device is made up of glue lid 3-1 and soft absorbent material 3-2.

The specific embodiment:

Dumpage type fully-enclosed safe pipettor, this device can directly move liquid with tipping.It is applicable to the liquid that moves of small containers.

Hydrocone type fully-enclosed safe pipettor, this device utilizes combining of siphon pipe principle and connecting pipe principle earlier, sucking-off liquid is equal to two liquid levels reposefully from catheter with ear washing bulb, concrete operation method is to make catheter be in the basic status of class as " N " shape earlier, with ear washing bulb (when the catheter internal diameter is bigger when needing suction strong, the also available pump bowl of ear washing bulb replaces, also can add sebific duct in case of necessity, glass-tube, annexes such as single hole plug cooperate pump bowl work) from catheter outlet imbitition, when the liquid of sucking-off climbs over conduit middle part peak and arrives that liquid level is with upper/lower positions in the container, can remove ear washing bulb, liquid can advance equal until two liquid levels automatically, and liquid scattered in the surrounding environment when this can prevent sucking-off liquid; Also can continue simultaneously to utilize the combination of above-mentioned two principles to move liquid easily, as long as the catheter outlet is dropped to below the vessel level, liquid just can flow out automatically, otherwise the catheter outlet is risen on the vessel level, moves liquid and promptly stops automatically.It is applicable to the liquid that moves of medium-sized container.

Valve-type fully-enclosed safe pipettor, this installs available valve control and moves liquid, and it is applicable to the liquid that moves of tun.

Claims (1)

1, a kind of fully-enclosed safe pipettor, it is characterized in that forming by catheter, wireway, plug, rubber cover device and cover cap etc., the also available plug of rubber cover device replaces, catheter and wireway all can be formed by connecting by erosion-resisting hard tube and flexible pipe, each end of catheter, wireway is arranged in the plug, and each remaining end is arranged in the rubber cover device, also valve can be set on the catheter in case of necessity.When moving liquid, the plug and the rubber cover device that are arranged on catheter and wireway seal two outlet of container, and the liquids and gases in two containers can be exchanged mutually, and isolated fully with external environment.

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