CN210505506U

CN210505506U - Liquid split charging equipment for laboratory

Info

Publication number: CN210505506U
Application number: CN201921401127.9U
Authority: CN
Inventors: 王艳芳; 张朕豪
Original assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Current assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-05-12
Anticipated expiration: 2029-08-26

Abstract

The utility model belongs to the technical field of the technique of liquid partial shipment and specifically relates to a liquid partial shipment equipment is used in laboratory is related to. The utility model provides a laboratory is with liquid partial shipment equipment, including storing the liquid feeding device of carrying liquid, receiving the weight bottle that liquid feeding device carried liquid and carrying out the liquid device that returns of retrieving excessive liquid in the weight bottle, liquid feeding device includes the stock solution bucket, the drain pipe that is connected with the stock solution bucket and connects the sealing plug at the drain pipe other end, and the sealing plug is sealed with weight bottle lateral wall when filling in the weight bottle, be equipped with the scale pipe that inserts in the weight bottle on the sealing plug, the upper end of scale pipe is connected with back the liquid pipe, and the other end that returns the liquid pipe is connected to the fluid infusion groove. After the operator accomplished the regulation of scale tube position for the first time, during follow-up partial shipment liquid, only need outwards carry liquid always, until liquid gets into back in the liquid pipe, it reaches the volume that needs to mean the liquid in the weight bottle, then changes next weight bottle and continues the partial shipment, and partial shipment work efficiency is higher.

Description

Liquid split charging equipment for laboratory

Technical Field

The utility model belongs to the technical field of the technique of liquid partial shipment and specifically relates to a liquid partial shipment equipment is used in laboratory is related to.

Background

The liquid quantitative split charging machine is used for quantitative split charging of liquid articles such as medicament liquid, cold beverages and the like at present, and is an ideal small-sized device for quantitative split charging of small-dose liquid in medicament, pharmaceutical factories, beverage factories, daily chemical factories, scientific research experiments and the like in hospitals.

The prior utility model with the publication number of CN202186876U discloses a liquid quantitative racking machine. The racking machine enables the piston to move up and down along the measuring cylinder through the transmission rod by cranking the crank. The in-process of piston motion will divide the packing liquid to carry and get into in the branch bottling, controls the liquid ration in the branch bottling through reading graduated flask numerical value, reaches the effect of accurate weight.

The above prior art solution has the following drawbacks: in this scheme, the quantity of liquid in the dispensing bottle is controlled by manually reading the number of the measuring cylinder, which means that an operator needs to stare at the number of the measuring cylinder and record initial scale data and final scale data. And when the target liquid level is to be reached, the operator is required to slow down the hand-cranking speed so as to realize accurate weight, so that the working efficiency is low when the racking machine is used for carrying out repeated equivalent liquid separation work.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a laboratory is with liquid partial shipment equipment, its advantage lies in carrying out the efficiency of many times equivalent partial shipment liquid work higher.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a laboratory is with liquid partial shipment equipment, including storing the liquid feeding device of carrying liquid, receiving the weight bottle that liquid feeding device carried liquid and carrying out the liquid device that returns of retrieving excessive liquid in the weight bottle, liquid feeding device includes the stock solution bucket, the drain pipe that is connected with the stock solution bucket and connects the sealing plug at the drain pipe other end, and the sealing plug is sealed with weight bottle lateral wall when filling in the weight bottle, be equipped with the scale pipe that inserts in the weight bottle on the sealing plug, the upper end of scale pipe is connected with back the liquid pipe, and the other end that returns the liquid pipe is connected to the fluid infusion groove.

Through adopting above-mentioned technical scheme, carry the liquid in the stock solution bucket to get into the branch bottle through the drain pipe through sending the liquid device in, the gas in the branch bottle is discharged through returning the liquid pipe. When the liquid level in the measuring flask reaches the height of the liquid return pipe, the liquid outlet pipe conveys liquid to enter the measuring flask, and the liquid in the measuring flask enters the graduated tube and is recycled to enter the liquid supplementing groove through the liquid return pipe. Therefore, after the operator finishes the adjustment of the position of the graduated tube for the first time, when liquid is subpackaged subsequently, the operator only needs to convey the liquid outwards all the time until the liquid enters the liquid return tube, the liquid in the component bottle reaches the required amount, and then the next component bottle is replaced to continue subpackaging. Because the liquid amount is not required to be controlled by staring at the numerical value of the measuring cylinder each time, the efficiency is higher during multiple equal-amount subpackaging work.

The utility model discloses further set up to: the outside shaping of scale tube has the external screw thread, and the external screw thread breaks off at the position that the shaping has the scale mark, and the position threaded connection that the scale tube is located sealing plug one side has two positioning nut, and the position threaded connection that the scale tube is located the sealing plug opposite side has lock nut.

Through adopting above-mentioned technical scheme, through set up the position location of external screw thread and set nut, lock nut cooperation with graduated flask and sealing plug on the graduated flask. Because the position of the two positioning nuts is adjusted firstly through the two positioning nuts, the positions of the two positioning nuts can not be changed when the locking nut is screwed down subsequently.

The utility model discloses further set up to: and a rubber ring is in threaded connection with the position between the locking nut and the sealing plug on the graduated tube.

Through adopting above-mentioned technical scheme, set up screw-thread fit's rubber circle on the scale tube and form sealed face, when the rubber circle was extruded by lock nut and sealing plug, all the butt forms sealed face between rubber circle and sealing plug butt face, rubber circle and the scale tube outer wall.

The utility model discloses further set up to: one end of the sealing plug is large, the other end of the sealing plug is small, and a flaring edge matched and sealed with the sealing plug is formed at the upper end of the component bottle.

By adopting the technical scheme, the sealing plug and the flaring edge of the component bottle can form a joint sealing surface with certain taper when matched by setting the sealing plug with one end large and one end small, so that the sealing plug and the component bottle are tightly matched and sealed. Avoid the poor liquid that leads to of gas tightness to get into back in the liquid pipe.

The utility model discloses further set up to: the joint of the liquid return pipe and the liquid supplementing groove is provided with a one-way valve, and liquid is limited by the one-way valve to only flow from the graduated pipe to the liquid supplementing groove.

Through adopting above-mentioned technical scheme, make liquid only can follow the scale tube flow to the fluid infusion groove through setting up the check valve, avoid when extracting the sealing plug to return the liquid backward flow of intraductal liquid to the component bottle in lead to the liquid volume to control inaccurately.

The utility model discloses further set up to: an inner threaded hole is formed in the middle of one end of the liquid storage barrel, a screw rod is connected with the inner threaded hole in an inner threaded mode, and a piston which is matched with the inner wall of the liquid storage barrel and is airtight is connected to one end, extending into the liquid storage barrel, of the screw rod in a rotating mode.

Through adopting above-mentioned technical scheme, drive the piston through rotating the screw rod and move along the liquid storage barrel inner wall and carry liquid.

The utility model discloses further set up to: the liquid supplementing groove is positioned above the liquid storage barrel and is communicated with the liquid storage barrel through a liquid supplementing pipe, and the liquid supplementing pipe is provided with a liquid supplementing valve for controlling the opening and closing of the liquid supplementing pipe; a liquid outlet valve is connected between the liquid storage barrel and the liquid outlet pipe.

By adopting the technical scheme, when the liquid in the liquid storage barrel is insufficient, the liquid outlet valve is closed, the liquid replenishing valve is opened, and the handle is rotated reversely to the piston to return to the original position. Then liquid replenishing is conducted into the liquid replenishing groove until the liquid in the liquid replenishing groove cannot flow into the liquid storage barrel any more, the liquid replenishing valve is closed, the liquid outlet valve is opened, and then the liquid is conveyed continuously.

The utility model discloses further set up to: and one end of the screw rod extending out of the liquid storage barrel is bent by 90 degrees to form a force arm rod, and one end of the force arm rod, far away from the screw rod, is bent in a direction back to the screw rod to form a holding rod parallel to the screw rod.

Through adopting above-mentioned technical scheme, set up arm of force pole and holding rod and make things convenient for operator's drive screw to rotate in the one end that the screw rod stretches out the liquid storage barrel.

To sum up, the utility model discloses a beneficial technological effect does:

1. after the operator finishes the first adjustment of the position of the graduated tube, when liquid is subpackaged subsequently, the operator only needs to convey the liquid outwards until the liquid enters the liquid return tube, which means that the liquid in the component bottle reaches the required amount, and then the operator replaces the next component bottle to continue subpackaging; because the liquid amount is not required to be controlled by staring at the numerical value of the measuring cylinder each time, the efficiency is higher during multiple equivalent subpackaging work;

2. set up screw-thread fit's rubber circle on the scale tube and form sealed face, when the rubber circle was extruded by lock nut and sealing plug, the rubber circle formed sealed face with equal butt between sealing plug butt face, rubber circle and the scale tube outer wall, and it is intraductal to avoid the gas tightness to lead to the unable entering liquid that returns of liquid well.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a schematic sectional view of a liquid feeding apparatus in an embodiment;

FIG. 3 is a schematic sectional view of the position of the component bottle in the embodiment.

Reference numerals: 1. a liquid feeding device; 2. a component bottle; 3. a liquid return device; 4. a liquid storage barrel; 5. an internally threaded bore; 6. a screw; 7. a piston; 8. a force arm lever; 9. a holding rod; 10. a liquid supplementing groove; 11. a liquid supplementing pipe; 12. a fluid replenishing valve; 13. a liquid outlet valve; 14. a liquid outlet pipe; 15. a sealing plug; 16. a flaring edge; 17. a graduated tube; 18. positioning a nut; 19. a rubber ring; 20. locking the nut; 21. a liquid return pipe; 22. a one-way valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the liquid dispensing equipment for the laboratory comprises a liquid conveying device 1 for storing and conveying liquid, a component bottle 2 for receiving the liquid conveyed by the liquid conveying device 1, and a liquid returning device 3 for recovering the excessive liquid in the component bottle 2.

As shown in fig. 1 and 2, the liquid feeding device 1 includes a liquid storage barrel 4 with an axis arranged along a horizontal direction, and an internal threaded hole 5 is formed in the middle of one end of the liquid storage barrel 4. One end of a screw rod 6 in threaded fit with the internal threaded hole 5 extends into the liquid storage barrel 4, and one end extending into the liquid storage barrel 4 is rotatably connected with a piston 7, and the piston 7 is sealed with the inner wall of the liquid storage barrel 4; one end of the screw rod 6 extending out of the liquid storage barrel 4 is bent by 90 degrees to form a force arm rod 8, and one end of the force arm rod 8 far away from the screw rod 6 is bent in a direction back to the screw rod 6 to form a holding rod 9 parallel to the screw rod 6. One end of the screw rod 6 extending out of the liquid storage barrel 4 is used as the rear end of the liquid storage barrel 4.

As shown in fig. 1 and 2, a liquid replenishing tank 10 is installed above the liquid storage barrel 4 near the front end, the lower part of the liquid replenishing tank 10 is communicated with the liquid storage barrel 4 through a liquid replenishing pipe 11, and a liquid replenishing valve 12 for controlling the opening and closing of the liquid replenishing pipe 11 is installed on the liquid replenishing pipe 11. The position that the terminal surface is close to the bottom before the stock solution bucket 4 is connected with drain valve 13, and the other end of drain valve 13 is connected with drain pipe 14, and drain pipe 14 is the hose, and sealing plug 15 is installed to the one end that liquid storage bucket 4 was kept away from to drain pipe 14, and drain pipe 14 wears out sealing plug 15 and cooperates the fixed seal of department with sealing plug 15, and the one end that sealing plug 15 was worn out to drain pipe 14 is the less one end of sealing plug 15 diameter.

As shown in fig. 1 and 3, all the component bottles 2 are the same in shape and size, the component bottles 2 are flared edges 16 with upper ports matched and sealed with the sealing plugs 15, and when the sealing plugs 15 are plugged into the flared edges 16 and the upper surfaces of the sealing plugs 15 are flush with the upper end surfaces of the flared edges 16, the side walls of the sealing plugs 15 are in fit and seal with the inner walls of the flared edges 16.

As shown in fig. 1 and 3, the liquid returning device 3 includes a graduated tube 17 passing through the sealing plug 15, an external thread is formed on the outer side of the graduated tube 17, and the external thread is broken at the position where the graduation mark is formed. Two positioning nuts 18 are in threaded connection with one side of the graduated tube 17, which is located at the smaller end of the diameter of the sealing plug 15, and a rubber ring 19 and a locking nut 20, which is located at one side of the rubber ring 19, which is back to the sealing plug 15, are in threaded connection with one side of the graduated tube 17, which is located at the larger end of the diameter of the sealing plug 15. The upper end of graduated tube 17 is connected with liquid return pipe 21, and liquid return pipe 21 is the hose, and the one end that liquid return pipe 21 kept away from graduated tube 17 is connected with check valve 22, and the other end and the fluid infusion groove 10 of check valve 22 are linked together. The liquid is restricted only from flowing from the graduated tube 17 to the replenishing tank 10 by the check valve 22.

As shown in fig. 1 and 3, the position of the two positioning nuts 18 is adjusted according to the scale marks, so that the sealing plug 15 is adjusted to the required scale position. Then, the rubber ring 19 is rotated to enable the rubber ring 19 to be abutted against the sealing plug 15, then the locking nut 20 is screwed to enable the locking nut 20 to extrude the rubber ring 19, and the rubber ring 19 is extruded and deformed to form sealing surfaces with the sealing plug 15 and the outer wall of the graduated rod.

As shown in fig. 1 and 2, the sealing plug 15 is then inserted into the flared rim 16 of the portion bottle 2 and compacted by the plate so that the upper surface of the sealing plug 15 is flush with the upper surface of the flared rim 16. The screw rod 6 is driven to rotate by applying force to the holding rod 9, the piston 7 moves forwards, liquid in the liquid storage barrel 4 is pushed to be conveyed forwards, and the liquid is conveyed into the component bottle 2 through the liquid outlet pipe 14. During the process of liquid entering the content bottle 2, the gas in the content bottle 2 is discharged through the liquid return pipe 21. Until the liquid level in the component bottle 2 reaches the position of the graduated tube 17, the liquid in the component bottle 2 enters the graduated tube 17 while the liquid is conveyed into the component bottle 2 by the liquid outlet tube 14, and is recycled and enters the liquid supplementing tank 10 through the liquid return tube 21.

As shown in fig. 1 and 2, when the liquid in the liquid storage barrel 4 is insufficient, the liquid outlet valve 13 is closed, the liquid replenishing valve 12 is opened, and the handle is rotated reversely until the piston 7 returns to the original position. Then, the liquid replenishment liquid is introduced into the replenishment liquid tank 10, and the liquid replenishment is stopped until the liquid in the replenishment liquid tank 10 cannot flow into the liquid storage barrel 4 any more, and the replenishment liquid valve 12 is closed and the liquid outlet valve 13 is opened.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a laboratory is with liquid partial shipment equipment which characterized by: including storing liquid delivery device (1), receiving liquid delivery device (1) the weight bottle (2) of liquid delivery and carrying out the liquid device (3) that returns of retrieving excessive liquid in weight bottle (2), liquid delivery device (1) includes stock solution bucket (4), drain pipe (14) that are connected with stock solution bucket (4) and sealing plug (15) of connection at the drain pipe (14) other end, sealing plug (15) fill in weight bottle (2) time with weight bottle (2) side wall seal, be equipped with scale tube (17) that insert in weight bottle (2) on sealing plug (15), the upper end of scale tube (17) is connected with back liquid pipe (21), and the other end of back liquid pipe (21) is connected to moisturizing groove (10).

2. The laboratory liquid dispensing apparatus as set forth in claim 1, wherein: the outside shaping of scale drum (17) has the external screw thread, and the external screw thread breaks at the position that the shaping has the scale mark, and the position threaded connection that scale drum (17) is located sealing plug (15) one side has two positioning nut (18), and the position threaded connection that scale drum (17) is located sealing plug (15) opposite side has lock nut (20).

3. The laboratory liquid dispensing apparatus as set forth in claim 2, wherein: and a rubber ring (19) is in threaded connection with the position, between the locking nut (20) and the sealing plug (15), on the graduated tube (17).

4. The laboratory liquid dispensing apparatus as set forth in claim 1, wherein: one end of the sealing plug (15) is large, the other end of the sealing plug is small, and a flaring edge (16) which is matched and sealed with the sealing plug (15) is formed at the upper end of the component bottle (2).

5. The laboratory liquid dispensing apparatus as set forth in claim 1, wherein: the joint of the liquid return pipe (21) and the liquid supplementing groove (10) is provided with a one-way valve (22), and the liquid is limited by the one-way valve (22) to flow from the graduated tube (17) to the liquid supplementing groove (10).

6. The laboratory liquid dispensing apparatus as set forth in claim 1, wherein: internal thread hole (5) have been seted up at the middle part of stock solution bucket (4) one end, and internal thread hole (5) female connection has screw rod (6), and screw rod (6) stretch into the one end in stock solution bucket (4) and rotate and be connected with the inclosed piston (7) of stock solution bucket (4) inner wall cooperation.

7. The laboratory liquid dispensing apparatus as set forth in claim 6, wherein: the liquid supplementing tank (10) is positioned above the liquid storage barrel (4) and is communicated with the liquid storage barrel (4) through a liquid supplementing pipe (11), and a liquid supplementing valve (12) for controlling the opening and closing of the liquid supplementing pipe (11) is installed on the liquid supplementing pipe (11); a liquid outlet valve (13) is connected between the liquid storage barrel (4) and the liquid outlet pipe (14).

8. The laboratory liquid dispensing apparatus as set forth in claim 6, wherein: one end of the screw rod (6) extending out of the liquid storage barrel (4) is bent by 90 degrees to form a force arm rod (8), and one end, far away from the screw rod (6), of the force arm rod (8) is bent in a direction back to the screw rod (6) to form a holding rod (9) parallel to the screw rod (6).