CN208436857U - It is a kind of to continue liquid-adding device - Google Patents

Abstract

A kind of this application discloses experimental instrument technology continues liquid-adding device, including fluid reservoir, the top of the fluid reservoir is equipped with the first nozzle, the bottom of the fluid reservoir is equipped with the second nozzle, the middle part of the fluid reservoir is equipped with third nozzle, first nozzle is connected with rubber pipette bulb, the suction pipe of the rubber pipette bulb is extend into fluid reservoir, second nozzle is communicated with outlet tube, the first one-way cock for being only used for out liquid is communicated between second nozzle and outlet tube, the third nozzle is communicated with inlet tube, the second one-way valve door for being only used for feed liquor is communicated between the third nozzle and inlet tube.This programme can be such that the liquid in fluid reservoir constantly flows out by outlet tube by constantly squeezing rubber pipette bulb.

Description

It is a kind of to continue liquid-adding device

Technical field

The utility model relates to experimental instrument technologies, and in particular to a kind of to continue liquid-adding device.

Background technique

In chemical experiment (such as reaction test, chromatographic column), it is often necessary to continue adding liquid (solvent, solution, reaction solution Deng).Currently used method is to carry out liquid relief using pipette, and pipette is an elongated glass tube, is set on glass tube There is graduation mark, lower end is sharp mouth shape, and the upper end of pipette is connected to rubber pipette bulb, and rubber pipette bulb is a kind of instrument of rubber mass, inhales ear Ball includes spherical, and the bottom of spherical is communicated with the suction pipe of tubulose.When drawing liquid, the lower end of pipette is inserted into wait inhale Liquid level, by squeezing and releasing rubber pipette bulb, liquid is entered in pipette under the action of negative pressure, removes rubber pipette bulb, the big thumb of left hand Refer to and seal the top of pipette, when the volume of needs to be obtained, pipette is proposed to imbibition face, then pipette is moved to needs It wants in the container of liquid feeding.But this mode has the following problems, this method is easy to cause imbibition excessive, so that liquid enters Into rubber pipette bulb, the pollution of rubber pipette bulb is caused, simultaneously because needing lasting liquid feeding, at regular intervals, needs to repeat to move Pipette, it is very inconvenient.

Utility model content

Continue liquid-adding device the purpose of the utility model is to provide a kind of, to solve to need to repeat mobile move in the prior art The problem of liquid pipe.

In order to achieve the above objectives, the utility model provides the following technical solutions: a kind of to continue liquid-adding device, including liquid storage Tank, the top of the fluid reservoir are equipped with the first nozzle, and the bottom of the fluid reservoir is equipped with the second nozzle, the middle part of the fluid reservoir Equipped with third nozzle, first nozzle is connected with rubber pipette bulb, and the suction pipe of the rubber pipette bulb is extend into fluid reservoir, and described second Nozzle is communicated with outlet tube, and the first one-way cock for being only used for out liquid is communicated between second nozzle and outlet tube, described Third nozzle is communicated with inlet tube, and the second one-way valve door for being only used for feed liquor is communicated between the third nozzle and inlet tube.

Working principle of the utility model is: the lasting liquid-adding device in this programme uses in this way, it will be in this programme Outlet tube is put into in liquid adding vessel, inlet tube is put into the container equipped with liquid, and make inlet tube extend into liquid level with Under, rubber pipette bulb and the clamping of the first nozzle, the suction pipe of rubber pipette bulb are extend into fluid reservoir, i.e., the suction pipe of rubber pipette bulb are snapped onto first In nozzle, the suction pipe of rubber pipette bulb can seal up the first nozzle, make the state in sealing in fluid reservoir.When initial, fluid reservoir Interior not have liquid, by squeezing rubber pipette bulb, the air in rubber pipette bulb, which is squeezed out and passes through suction pipe, to be entered in fluid reservoir, liquid storage Certain pressure is generated in tank to be communicated with and be only used between the second nozzle and outlet tube because the second nozzle is communicated with outlet tube First one-way cock of liquid out, is communicated with the second one-way valve door for being only used for feed liquor between third nozzle and inlet tube, pressure will By squeezing out after the first one-way cock and outlet tube, second one-way valve door is not turned on air in fluid reservoir, unclamps inhale ear at this time Ball, fluid reservoir is interior to generate negative pressure, and under the action of atmospheric pressure, liquid enters liquid storage by inlet tube, second one-way valve door In tank, the first one-way cock is not turned on, and rubber pipette bulb expansion squeezes rubber pipette bulb again, and the gas in rubber pipette bulb enters fluid reservoir, Certain pressure is generated in fluid reservoir, the liquid just oppressed in fluid reservoir in this way is flowed out by the first one-way cock and outlet tube, Liquid will not repeat aforesaid operations by second one-way valve door towards outflow outside fluid reservoir, continuous can hold towards to liquid feeding Liquid is easily added.

The utility model has the beneficial effects that passing through liquid constantly by constantly squeezing rubber pipette bulb in 1, this programme Inlet tube and second one-way valve door enter in fluid reservoir, then are flowed by the first one-way cock and outlet tube to the molten device of liquid feeding Interior, compared to the prior art, this programme does not have to constantly repeat to move, and does not need to remove rubber pipette bulb, directly by constantly squeezing Rubber pipette bulb, which realizes, constantly continues liquid feeding.2, it is added to fluid reservoir in scheme, compared to by pipette liquid relief, avoided The phenomenon that imbibition is excessive, causes liquid to enter in rubber pipette bulb, causes the pollution of rubber pipette bulb generation, this programme fluid reservoir can be made It is not in the contaminated situation of rubber pipette bulb for the container for temporarily storing liquid.

Further, the fluid reservoir is equipped with graduation mark.It can be inhaled according to the graduation mark on fluid reservoir by part pressing Ear ball generates pressure so that a part of gas in rubber pipette bulb enters in fluid reservoir, carries out reference by graduation mark, squeezes Quantitative liquid is flowed out by the first one-way cock and outlet tube.

Further, the fluid reservoir is connected with the bracket for promoting its height.By making fluid reservoir connecting bracket, with lift The height of liquid storage bottom of the tube liquid outlet is risen, on the one hand by rising height, so that the flow rate of liquid in outlet tube is accelerated, to accelerate The process of liquid feeding, on the other hand, bracket can fix fluid reservoir, more convenient when squeezing rubber pipette bulb in this way.

Further, the rubber pipette bulb is equipped with anti-skid chequer.Anti-skid chequer plays the role of increasing friction force.

Further, the rubber pipette bulb is connected with pressing mechanism, and the pressing mechanism includes pyramid, drive rod and hollow branch Dagger, lateral connecting plate is connected at the top of the support column, and the connecting plate is equipped with perpendicular far from the bottom of support column side Straight limit plate, the bottom level of the connecting plate slidably connect stripper plate, and the limit plate and stripper plate are located at same perpendicular It faces directly, one end of the drive rod is fixedly connected with stripper plate, and the pyramid is set in support column, and the pyramid is connected with driving Its cylinder moved up and down, upward, the other end and pyramid side side wall of the drive rod support at the tip of the pyramid.Make Used time makes rubber pipette bulb between limit plate and stripper plate, because of the special shape of pyramid, the side wall of pyramid is from the bottom of pyramid Towards the tip-tilt of pyramid, the distance between pyramid side wall and support column wall are gradually increased from top to bottom, and such cylinder drives When dynamic pyramid slides upward, pyramid can gradually release drive rod, and drive rod drives stripper plate mobile towards rubber pipette bulb, because Limit plate and connecting plate are located at same vertical plane, and such stripper plate presses rubber pipette bulb on limit plate, just complete suction in this way The extruding of ear ball, when cylinder drives pyramid towards lower slider, the side wall of pyramid no longer supports drive rod, and stripper plate is no longer to inhaling ear Ball is squeezed, and rubber pipette bulb automatic expansion returns to original state, is repeated above-mentioned operation, can constantly be squeezed to rubber pipette bulb Pressure.

Further, the stripper plate is the cambered surface with rubber pipette bulb form fit.Cambered surface and the contact area of rubber pipette bulb are big, can So that rubber pipette bulb is compressed completely.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram for continuing liquid-adding device；

Fig. 2 is the schematic diagram of internal structure of Fig. 1.

Specific embodiment

The utility model is described in further detail below by specific embodiment:

Appended drawing reference in Figure of description includes: the first one-way cock 1, outlet tube 2, bracket 3, the pipe of rubber pipette bulb 4, first Mouth 5, second one-way valve door 6, third nozzle 7, inlet tube 8, the second nozzle 9, limit plate 10, connecting plate 11, stripper plate 12, driving Bar 13, support column 14, fluid reservoir 15, pyramid 16, cylinder 17.

Embodiment 1: a kind of lasting liquid-adding device, including fluid reservoir 15, fluid reservoir 15 are connected with for promoting its height Bracket 3, fluid reservoir 15 are equipped with graduation mark, and the top of fluid reservoir 15 is equipped with the first nozzle 5, and the bottom of fluid reservoir 15 is equipped with second The middle part of nozzle 9, fluid reservoir 15 is equipped with third nozzle 7, and the first nozzle 5 is connected with rubber pipette bulb 4, and the suction pipe of rubber pipette bulb 4 is extend into In fluid reservoir 15, the second nozzle 9 is communicated with outlet tube 2, is communicated between the second nozzle 9 and outlet tube 2 and is only used for out the of liquid One one-way cock 1, third nozzle 7 are communicated with inlet tube 8, are communicated between third nozzle 7 and inlet tube 8 and are only used for the of feed liquor Two one-way cocks 6.

Lasting liquid-adding device in this programme uses in this way, and the outlet tube 2 in this programme is put into and is held to liquid feeding In device, inlet tube 8 is put into the container equipped with liquid, and so that inlet tube 8 is extend into liquid level hereinafter, rubber pipette bulb 4 and the first pipe Mouth 5 is clamped, and the suction pipe of rubber pipette bulb 4 extend into fluid reservoir 15, i.e., snaps onto the suction pipe of rubber pipette bulb 4 in first nozzle 5, inhales ear The suction pipe of ball 4 can seal up the first nozzle 5, make the state in sealing in fluid reservoir 15.When initial, do not have in fluid reservoir 15 Liquid, by squeezing rubber pipette bulb 4, the air in rubber pipette bulb 4, which is squeezed out and passes through suction pipe, to be entered in fluid reservoir 15, fluid reservoir Certain pressure is generated in 15 to be communicated with only between second nozzle 9 and outlet tube 2 because the second nozzle 9 is communicated with outlet tube 2 For going out the first one-way cock 1 of liquid, the second one-way valve door for being only used for feed liquor is communicated between third nozzle 7 and inlet tube 8 6, by the air in fluid reservoir 15 by squeezing out after the first one-way cock 1 and outlet tube 2, second one-way valve door 6 is not turned on pressure, Rubber pipette bulb 4 is unclamped at this time, generates negative pressure in fluid reservoir 15, and under the action of atmospheric pressure, liquid is single by inlet tube 8, second It is entered in fluid reservoir 15 to valve 6, the first one-way cock 1 is not turned on, and rubber pipette bulb 4 expands, and squeezes rubber pipette bulb 4 again, inhales ear Gas in ball 4 enters fluid reservoir 15, and certain pressure is generated in fluid reservoir 15, just oppresses the liquid in fluid reservoir 15 in this way It is flowed out by the first one-way cock 1 and outlet tube 2, liquid will not be repeated by second one-way valve door 6 towards outflow outside fluid reservoir 15 Aforesaid operations, can be continuous towards being readily incorporated into liquid to liquid feeding.

Embodiment 2: squeezing rubber pipette bulb 4 using pressing mechanism, pressing mechanism include pyramid 16, drive rod 13 and in Empty support column 14, the top of support column 14 is connected with lateral connecting plate 11, bottom of the connecting plate 11 far from 14 side of support column Portion is equipped with vertical limit plate 10, and the bottom level of connecting plate 11 slidably connects stripper plate 12, limit plate 10 and stripper plate 12 Positioned at same vertical plane, one end of drive rod 13 is fixedly connected with stripper plate 12, and pyramid 16 is set in support column 14, and pyramid 16 connects Be connected to its cylinder 17 for moving up and down of driving, the tip of pyramid 16 upward, the 16 side side wall of the other end and pyramid of drive rod 13 It supports, stripper plate 12 is the cambered surface with 4 form fit of rubber pipette bulb.

When in use, make rubber pipette bulb 4 between limit plate 10 and stripper plate 12, because of the special shape of pyramid 16, rib The side wall of cone 16 from the bottom of pyramid 16 towards the tip-tilt of pyramid 16, between 14 inner wall of 16 side wall of pyramid and support column away from From being gradually increased from top to bottom, when such cylinder 17 drives pyramid 16 to slide upward, pyramid 16 can gradually push away drive rod 13 Out, drive rod 13 drives stripper plate 12 mobile towards rubber pipette bulb 4, because limit plate 10 and connecting plate 11 are located at same vertical plane, Stripper plate 12 presses rubber pipette bulb 4 on limit plate 10 in this way, just completes the extruding of rubber pipette bulb 4 in this way, when cylinder 17 drives When pyramid 16 is towards lower slider, the side wall of pyramid 16 no longer holds drive rod 13, and stripper plate 12 no longer squeezes rubber pipette bulb 4, inhales 4 automatic expansion of ear ball returns to original state, repeats above-mentioned operation, can constantly squeeze rubber pipette bulb 4.

Above-described is only the embodiments of the present invention, and the common sense such as well known specific structure and characteristic are herein in scheme It does not describe excessively.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, also Several modifications and improvements can be made, these also should be considered as protection scope of the present invention, these all will not influence of the invention real The effect and patent practicability applied.The scope of protection required by this application should be based on the content of the claims, specification In the records such as specific embodiment can be used for explaining the content of claim.

Claims (6)

1. a kind of continue liquid-adding device, it is characterised in that: including fluid reservoir, the top of the fluid reservoir is equipped with the first nozzle, institute The bottom for stating fluid reservoir is equipped with the second nozzle, and the middle part of the fluid reservoir is equipped with third nozzle, and first nozzle is connected with suction The suction pipe of ear ball, the rubber pipette bulb is extend into fluid reservoir, and second nozzle is communicated with outlet tube, second nozzle and is gone out The first one-way cock for being only used for out liquid is communicated between liquid pipe, the third nozzle is communicated with inlet tube, the third nozzle The second one-way valve door for being only used for feed liquor is communicated between inlet tube.

2. according to claim 1 continue liquid-adding device, it is characterised in that: the fluid reservoir is equipped with graduation mark.

3. according to claim 2 continue liquid-adding device, it is characterised in that: the fluid reservoir is connected with for promoting its height The bracket of degree.

4. according to claim 3 continue liquid-adding device, it is characterised in that: the rubber pipette bulb is equipped with anti-skid chequer.

5. according to claim 4 continue liquid-adding device, it is characterised in that: the rubber pipette bulb is connected with pressing mechanism, institute Stating pressing mechanism includes pyramid, drive rod and hollow support column, and lateral connecting plate, institute are connected at the top of the support column It states connecting plate and is equipped with vertical limit plate far from the bottom of support column side, the bottom level of the connecting plate slidably connects crowded Pressing plate, the limit plate and stripper plate are located at same vertical plane, and one end of the drive rod is fixedly connected with stripper plate, the rib Cone is set in support column, and the pyramid is connected with its cylinder for moving up and down of driving, the tip of the pyramid upward, the driving The other end and pyramid side side wall of bar support.

6. it is according to claim 5 continue liquid-adding device, it is characterised in that: the stripper plate be and rubber pipette bulb form fit Cambered surface.