CN209878069U - Multi-head constant volume device - Google Patents

Abstract

The utility model relates to a multi-head constant volume device, which comprises a fixed tray and a constant volume bottle, wherein the upper end surface of the fixed tray adsorbs a plurality of double-sided suckers, the upper end suckers of the double-sided suckers adsorb an elastic fixer with a base for fixing the volume bottle, the constant volume bottle is provided with a bottle cap, a suction pipe is arranged in the volume bottle, the lower end of the suction pipe is provided with a suction nozzle, the upper end of the suction pipe extends out of the bottle cap and is fixed on the bottle cap, a piston rod capable of being pushed and pulled is sleeved in the suction pipe, the suction pipe is arranged on a pipe body in the constant volume bottle and is connected with a plurality of liquid outlet pipes, the liquid outlet pipes are communicated with the suction pipe, the upper end of the liquid outlet pipes extends out of the bottle cap and extends to the upper part of the tray, the multi-head constant volume device can simultaneously carry out constant volume on a plurality of volume, the container can not be damaged.

Description

Multi-head constant volume device

Technical Field

The utility model relates to an apparatus for the experiments, concretely relates to bull constant volume device for physiology biochemical experiment.

Background

Constant volume is an important step in the pretreatment operation process of a chemical experiment sample, and at present, because the sample pretreatment equipment is few, especially liquid adding and constant volume are time-consuming and labor-consuming, and are closely related to the operation technology of operators.

The constant volume device is used for shifting laboratory vessel and volumetric flask constant volume liquid, traditional constant volume operation is with the volumetric flask directly as the measurement utensil, directly with liquid drainage to volumetric flask, the reuse burette titrates, but some volumetric flasks easily fall, cause the volumetric flask damaged, extravagant solution, the repetitive work volume, work efficiency is low, people shift other awaiting measuring of spectrophotometer in order to reduce the breakage rate or save time and need a plurality of household utensils to shift simultaneously in laboratory vessel transfer process, but when shifting, the ordinary no fixed plane tray of adopting more, perhaps there is not manual the shifting of tray, cause the breakage rate to improve, work efficiency is low.

Disclosure of Invention

In view of the above situation, the utility model aims at providing a bull constant volume device, bull constant volume bottle can carry out the constant volume simultaneously to putting a plurality of volumetric flasks on fixed tray in the experiment operation process, has improved steadiness and work efficiency, can not cause the container damaged.

The technical scheme of the utility model is that the multi-head constant volume device comprises a fixed tray and a constant volume bottle, wherein the upper end surface of the fixed tray adsorbs a plurality of double-sided suckers, the upper-end suckers of the double-sided suckers adsorb an elastic fixer for fixing the volumetric flask with a base, the base of the elastic fixer is a regular polygon with no less than 4 edges, each corner of the base is hinged with one end of a support rod, the other end of the support rod is connected with an elastic ring, the constant volume bottle is provided with a bottle cap, a suction tube is arranged in the volumetric flask, the lower end of the suction tube is provided with a suction nozzle, the upper end of the suction tube extends out of the bottle cap and is fixed on the bottle cap, a piston rod capable of being pushed and pulled is sleeved in the suction tube, the suction tube is arranged on a tube body in the constant volume bottle and is connected with a plurality of liquid outlet, the bottle cap is provided with a graduated scale for measuring the volume of the solution in the bottle to be contained, the zero scale position of the graduated scale is aligned with the base of the elastic fixer, the graduated scale is provided with a movable quantitative ring, the quantitative ring is fixed through a screw, the upper end of the piston rod and the near side of the graduated scale are provided with a ferrule sleeved on the graduated scale, and the ferrule is used for contacting with the quantitative ring when the piston rod moves upwards so as to prevent the piston rod from moving upwards.

Preferably, the bottle cap is in threaded connection with the constant volume bottle, so that the bottle cap is convenient to open.

Preferably, the pipe orifice at the upper end of the liquid outlet pipe is arranged downwards, so that liquid is conveniently guided into a bottle to be accommodated.

Preferably, scales are arranged on the tube body of the suction tube, so that the liquid amount is conveniently controlled.

Preferably, the upper port of the suction pipe is provided with a buffer ring, so that the piston rod is convenient to lift.

Preferably, the number of the liquid outlet pipes is 3, and the device is simple and convenient to operate.

Preferably, the base of the elastic fixer is a regular hexagon, and the elastic ring is made of elastic materials, so that volumetric flasks with different sizes can be conveniently fixed.

Preferably, a plurality of sheaths are arranged on the elastic ring and used for protecting the volumetric flask.

The multi-head constant volume device of the utility model has the following beneficial effects;

1. the device has the advantages of convenient material taking, simple manufacture, convenience and practicability.

2. Greatly improves the working efficiency by more than 5 times compared with the manual original transfer operation, and saves the time.

3. The position of glassware has been fixed to the elasticity fixer during the transfer, has greatly improved glassware's security, has reduced the breakage rate, has saved the consumptive material expense of purchasing again and treating the volumetric flask.

4. Because the tray is provided with the double-sided sucker, the elastic fixer can be stably fixed on the tray, and the volumetric flask is convenient to transfer.

5. Thereby set up two-sided sucking disc and the device of being convenient for can take off sucking disc and elastic fixation ware after the experiment is ended, and then conveniently be used for other transfers of holding the bottle surely.

6. The volumetric flask has set up a plurality of drain pipe surely, can a plurality of volumetric flasks of constant volume simultaneously, great time of having saved has improved work efficiency.

The utility model discloses a bull constant volume device, the liquid feeding rate of accuracy is high, and good reproducibility can set for the transfer liquid volume when shifting the sample, can not cause and shift excessive problem, and it is extravagant not have reagent, and labour saving and time saving has improved work efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

fig. 3 is a schematic structural view of the elastic fixer of the present invention;

FIG. 4 is a schematic view of the present invention;

in the figure: 1-fixing a tray; 2-a fixed-volume bottle; 3-double-sided sucker; 4-an elastic holder; 5-bottle cap; 6-straw; 7-a suction nozzle; 8-a piston rod; 9-a liquid outlet pipe; 10-a graduated scale; 11-a quantitative ring; 12-a screw; 13-a ferrule; 14-a buffer ring; 15-volumetric flask; 41-a base; 42-a strut; 43-an elastic ring; 44 sheath.

Detailed Description

The technical solution of the present invention is further explained in detail with reference to the accompanying drawings:

as shown in fig. 1-3, a multi-head constant volume device includes a fixed tray 1 and a constant volume bottle 2, wherein the upper end surface of the fixed tray 1 adsorbs a plurality of double-sided suckers 3, the upper end suckers of the double-sided suckers 3 adsorb an elastic fixer 4 with a base, the base 41 of the elastic fixer 4 is a regular hexagon with no less than 4 sides, each corner of the base 41 is hinged with one end of a support rod 42, the other end of the support rod 42 is connected with an elastic ring 43, the elastic ring 43 is made of an elastic material, the elastic ring 43 is provided with a plurality of sheaths 44, the constant volume bottle 2 is in threaded connection with a bottle cap 5, a suction pipe 6 is arranged inside the constant volume bottle 2, the lower end of the suction pipe 6 is provided with a suction nozzle 7, the upper end of the suction pipe extends out of the bottle cap 5 and is fixed on the bottle cap 5, a piston rod 8 capable of being pushed and pulled is sleeved inside the suction pipe 6, the suction pipe, drain pipe 9 and straw 6 intercommunication, the upper end of drain pipe 9 stretches out bottle lid 5 and extends to 1 upper portion of fixed tray, be equipped with on the bottle lid 5 and be used for measuring the volume of solution scale 10 in the pending bottle of holding, the zero scale department of scale 10 with the base 41 of elastic fixation ware 4 aligns, be equipped with mobilizable ration circle 11 on the scale 10, ration circle 11 is fixed through screw 12, 8 upper ends of piston rods and the near side of scale 10 are equipped with the lasso 13 of cover on the scale, thereby lasso 13 is used for the piston rod 8 to move up the time and blocks that the piston rod 8 moves up with the contact of ration circle 11.

Further, the pipe orifice at the upper end of the liquid outlet pipe 9 is arranged downwards, so that liquid can be conveniently guided into the volumetric flask 13.

Furthermore, scales are arranged on the tube body of the suction tube 6, so that the liquid amount can be conveniently controlled.

Furthermore, a buffer ring 14 is arranged at the upper port of the suction pipe 6, so that the piston rod can be conveniently lifted.

Further, the base 41 of the elastic fixer 4 is made of stainless steel.

In specific implementation, as shown in fig. 4, assuming that 12 volumetric flasks 15 with constant volume are required and 20 ml of distilled water with constant volume is required, one end of a double-sided sucker 3 is adsorbed on a fixed tray 1, the sucker 3 faces upwards, a base of an elastic fixer 4 with a stainless steel base is placed on the top of the sucker 3, the base is pressed downwards with force to enable the adsorption to be tight, then 12 volumetric flasks 15 with constant volume are placed in holes of the elastic fixer 4, distilled water is added into a 1000 ml volumetric flask 2, a quantitative ring 11 is adjusted to 9 ml, then the volumetric flask 2 is held by one hand, three liquid outlet pipes 9 are respectively inserted into the volumetric flasks 15 with constant volume by one hand, when the collar 13 fixed on a piston rod 8 is lifted by hand to contact with the quantitative ring 11, liquid is sucked into a suction pipe 6 and quantified, the piston rod 8 is pressed down, and liquid can flow into the liquid outlet pipes 9 from the suction pipe 6 and then enters into the 3 volumetric flasks 15 with constant volume, the piston rod 8 is lifted and pressed down twice, 18ml of distilled water is added into the volumetric flask 15, the liquid outlet pipe 9 is moved to other volumetric flasks 15, the above operations are repeated until the liquids in 12 volumetric flasks 15 are all added to about 18ml, and finally, the liquid is uniformly metered to the scale mark of the volumetric flask 15 by using a rubber-tipped dropper, so that the constant volume of the volumetric flask 15 is completed.

Claims (8)

1. A multi-head constant volume device is characterized by comprising a fixed tray and a constant volume bottle, wherein the upper end face of the fixed tray adsorbs a plurality of double-sided suckers, the suckers at the upper ends of the double-sided suckers adsorb an elastic fixer which is provided with a base and used for fixing a volumetric flask, the base of the elastic fixer is a regular polygon with no less than 4 sides, each corner of the base is hinged with one end of a support rod, the other end of the support rod is connected with an elastic ring, the constant volume bottle is provided with a bottle cap, a suction pipe is arranged in the volumetric flask, the lower end of the suction pipe is provided with a suction nozzle, the upper end of the suction pipe extends out of the bottle cap and is fixed on the bottle cap, a piston rod capable of being pushed and pulled is sleeved in the suction pipe, the suction pipe is arranged on a pipe body in the constant volume bottle and is connected with a plurality of liquid outlet pipes, the liquid outlet pipes are communicated with the suction, the zero scale position of the graduated scale is aligned with the base of the elastic fixer, the graduated scale is provided with a movable quantitative ring, the quantitative ring is fixed through a screw, the upper end of the piston rod and the near side of the graduated scale are provided with a ferrule sleeved on the graduated scale, and the ferrule is used for contacting with the quantitative ring when the piston rod moves upwards so as to prevent the piston rod from moving upwards.

2. The multi-head constant volume device according to claim 1, wherein the bottle cap is in threaded connection with the constant volume bottle.

3. The multi-head constant volume device according to claim 1, wherein the nozzle at the upper end of the liquid outlet pipe is arranged downwards.

4. The multi-head constant volume device according to claim 1, wherein scales are arranged on the tube body of the suction tube.

5. The multi-head constant volume device according to claim 1, wherein the upper port of the suction pipe is provided with a buffer ring.

6. The multi-head constant volume device according to claim 1, wherein the number of the liquid outlet pipes is 3.

7. The multi-head constant volume device according to claim 1, wherein the base of the elastic fixer is a regular hexagon, and the elastic ring is made of an elastic material.

8. The multi-head constant volume device according to claim 1, wherein a plurality of sheaths are arranged on the elastic ring.