CN216172440U

CN216172440U - Reagent sampling device for chemistry experiments

Info

Publication number: CN216172440U
Application number: CN202122714687.3U
Authority: CN
Inventors: 申靖远
Original assignee: Shanghai Macklin Biochemical Co ltd
Current assignee: Shanghai Mclean Biochemical Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-05
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to the technical field of experimental equipment, and discloses a reagent sampling device for a chemical experiment, which comprises: the inner wall fixedly connected with sealing washer of connecting pipe, the bottom fixedly connected with fixed establishment of connecting pipe. This reagent sampling device for chemistry experiments, through setting up the connecting pipe, the sealing washer, a fixed establishment, the sealed tube, sealing plug and pull rod, cup joint the connecting pipe in the upper end of pipette, the sealing washer of connecting pipe inner wall closely pastes with the surface of pipette closely, carry out the centre gripping through a fixed establishment to the pipette, the position of fixed pipette, pulling the pull rod when getting with reagent, the pull rod drives the sealing plug motion, with the inside of the inside air suction sealed tube of pipette, move pipette to the container in, push down the pull rod again, can with the inside reagent discharge of pipette, move the liquid in-process and need not use, the upper end of pipette is sealed to the finger, avoid moving in-process reagent and spill from the inside of pipette.

Description

Reagent sampling device for chemistry experiments

Technical Field

The utility model relates to the technical field of experimental equipment, in particular to a reagent sampling device for a chemical experiment.

Background

Chemical laboratories provide chemical experimental conditions and important sites for scientific research, and are generally equipped with chemical cabinets in which commonly used chemicals are contained, the chemicals need to be stored and taken out when not in use, and pipettes are commonly used for liquid transfer, which are called indexing pipettes, also called scale pipettes, and are measuring glass gauges with graduation lines for transferring non-fixed amounts of solutions.

When the pipette is used for taking out a reagent, the reagent is usually sucked into the pipette by using the aurilave, the aurilave is quickly replaced from the upper end of the pipette by using fingers, if the operation is unskilled, when the aurilave is replaced, the fingers cannot timely seal the upper end of the pipette, gas enters the interior of the pipette from the upper end of the pipette, and then the reagent is leaked from the interior of the pipette.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, the present invention provides a reagent sampling device for chemical experiments, which solves the problems mentioned in the background above.

The utility model provides the following technical scheme: a reagent sampling device for chemical experiments, comprising: the connecting pipe, the inner wall fixedly connected with sealing washer of connecting pipe, the bottom fixedly connected with fixed establishment of connecting pipe, the inner wall threaded connection of connecting pipe has the installation pipe, the inner wall fixedly connected with spacing ring of installation pipe, the top fixedly connected with sealed tube of installation pipe, the inner wall sliding connection of sealed tube has the sealing plug, the top fixedly connected with pull rod of sealing plug, the top of pull rod runs through installation pipe and fixedly connected with and grips the piece, the surface of pull rod is provided with the scale mark, the spout has been seted up at the top of pull rod, the spacing groove has been seted up to the both sides of spout, the inner wall of spout is provided with stop gear.

Preferably, fixed establishment's quantity is two, two fixed establishment uses the vertical face in center through the connecting pipe to set up as the symmetry plane symmetry, fixed establishment includes fixed plate, splint and spring, fixed plate fixed connection is in the bottom of connecting pipe, the recess has been seted up to the side of fixed plate, and the inner wall of recess and the one end fixed connection of spring, the other end of spring and the fixed surface of splint are connected.

Preferably, the bottom of splint fixedly connected with guide plate, the inboard fixedly connected with cushion of splint.

Preferably, the surface of the clamping plate is fixedly connected with a guide rod, the guide rod penetrates through the fixing plate and is fixedly connected with a limiting block, and the spring is sleeved on the surface of the guide rod.

Preferably, stop gear includes threaded rod, regulating block and gag lever post, the surface of gripping the piece and the bottom of spout inner wall all inlay has the bearing, and the inner wall of bearing and the fixed surface of threaded rod are connected, regulating block threaded connection is at the inner wall of threaded rod, regulating block sliding connection is at the inner wall of spout, gag lever post fixed connection is on the surface of regulating block, gag lever post sliding connection is at the inner wall of spacing groove.

Preferably, the fixed surface of connecting pipe is connected with antiskid sheets, the quantity of antiskid sheet is two, two antiskid sheets use the central vertical face through the connecting pipe as the plane of symmetry setting, antiskid groove has been seted up on antiskid sheet's surface.

Compared with the prior art, the utility model has the following beneficial effects:

1. this reagent sampling device for chemistry experiments, through setting up the connecting pipe, the sealing washer, a fixed establishment, the sealed tube, sealing plug and pull rod, cup joint the connecting pipe in the upper end of pipette, the sealing washer of connecting pipe inner wall closely pastes with the surface of pipette closely, carry out the centre gripping through a fixed establishment to the pipette, the position of fixed pipette, pulling the pull rod when getting with reagent, the pull rod drives the sealing plug motion, with the inside of the inside air suction sealed tube of pipette, move pipette to the container in, push down the pull rod again, can with the inside reagent discharge of pipette, move the liquid in-process and need not use, the upper end of pipette is sealed to the finger, avoid moving in-process reagent and spill from the inside of pipette.

2. This reagent sampling device for chemistry experiments, through setting up threaded rod, regulating block and gag lever post, the gag lever post passes through the spacing groove spacing, and during the rotation threaded rod, adjustable threaded connection is in the position of regulating block to adjust in the position of gag lever post, the bottom of gag lever post and the top contact of sealed tube carry on spacingly through the position that the gag lever post descends, thereby control pipette's leakage fluid volume, avoid the volume of discharge reagent too much.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front sectional view of the present invention;

FIG. 3 is a schematic view of a partially enlarged structure of the fixing mechanism of the present invention;

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

FIG. 5 is an enlarged view of the structure at A in FIG. 4 according to the present invention.

In the figure: 1. a connecting pipe; 2. a seal ring; 3. a fixing mechanism; 31. a fixing plate; 32. a splint; 33. a spring; 4. installing a pipe; 5. a sealing tube; 6. a sealing plug; 7. a pull rod; 8. a holding block; 9. a chute; 10. a limiting groove; 11. a limiting mechanism; 111. a threaded rod; 112. an adjusting block; 113. a limiting rod; 12. a guide plate; 13. a soft cushion; 14. a guide rod; 15. a limiting block; 16. and (4) anti-slip sheets.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a reagent sampling device for chemical experiments comprises: connecting pipe 1, inner wall fixedly connected with sealing washer 2 of connecting pipe 1, the bottom fixedly connected with fixed establishment 3 of connecting pipe 1, the inner wall threaded connection of connecting pipe 1 has installation pipe 4, the inner wall fixedly connected with spacing ring of installation pipe 4, the top fixedly connected with sealed tube 5 of installation pipe 4, the bottom of sealed tube 5 is provided with sealed the pad, sealed pad and connecting pipe 1's top swing joint, the inner wall sliding connection of sealed tube 5 has sealing plug 6, the top fixedly connected with pull rod 7 of sealing plug 6, installation pipe 4 and fixedly connected with grip piece 8 are run through on the top of pull rod 7, the surface of pull rod 7 is provided with the scale mark, spout 9 has been seted up at the top of pull rod 7, spacing groove 10 has been seted up to the both sides of spout 9, the inner wall of spout 9 is provided with stop gear 11.

Wherein; the quantity of fixed establishment 3 is two, two fixed establishment 3 uses the vertical face in center through connecting pipe 1 to set up as the symmetry plane symmetry, and fixed establishment 3 includes fixed plate 31, splint 32 and spring 33, and fixed plate 31 fixed connection is in the bottom of connecting pipe 1, and the side of fixed plate 31 is seted up flutedly, and the inner wall of recess and the one end fixed connection of spring 33, and the other end of spring 33 and splint 32's fixed surface are connected.

Wherein; the bottom of the clamping plate 32 is fixedly connected with the guide plate 12, the inner side of the clamping plate 32 is fixedly connected with the soft cushion 13, the guide plate 12 can guide the pipette, the pipette can smoothly enter between the two clamping plates 32, and the soft cushion 13 can prevent the remaining pipettes of the clamping plate 32 from being in hard contact and avoid the damage of the pipette.

Wherein; the surface of the clamping plate 32 is fixedly connected with a guide rod 14, the guide rod 14 penetrates through the fixing plate 31 and is fixedly connected with a limiting block 15, the spring 33 is sleeved on the surface of the guide rod 14, and the guide rod 14 plays a role in guiding and supporting the spring 33.

Wherein; stop gear 11 includes threaded rod 111, regulating block 112 and gag lever post 113, and the bearing has all been inlayed to the surface of gripping piece 8 and the bottom of spout 9 inner wall, and the inner wall of bearing and threaded rod 111's fixed surface are connected, and regulating block 112 threaded connection is at the inner wall of threaded rod 111, and regulating block 112 sliding connection is at the inner wall of spout 9, and gag lever post 113 fixed connection is on the surface of regulating block 112, and gag lever post 113 sliding connection is at the inner wall of spacing groove 10.

Wherein; the fixed surface of connecting pipe 1 is connected with antiskid sheets 16, and antiskid sheets 16's quantity is two, and two antiskid sheets 16 use the vertical face in center through connecting pipe 1 to set up as the symmetry plane symmetry, and antiskid groove 9 has been seted up on antiskid sheets 16's surface.

The working principle is that the connecting pipe 1 is sleeved at the upper end of the pipette, the upper end of the pipette is contacted with the limiting ring on the inner wall of the mounting pipe 4, the sealing ring 2 on the inner wall of the connecting pipe 1 is tightly attached to the surface of the pipette, so that the space between the pipette and the connecting pipe 1 is sealed, air leakage during air suction is avoided, the spring 33 pushes the clamping plates 32 to be abutted to the surface of the pipette, the pipette is clamped through the two clamping plates 32, the position of the pipette is fixed, the pull rod 7 is pulled when reagent is taken, the pull rod 7 drives the sealing plug 6 to move, air in the pipette is sucked into the sealing pipe 5, so that the reagent in a reagent bottle enters the inside of the pipette, the pipette is directly moved to the container, the lower end of the pipette is aligned to the container, the pull rod 7 is pressed downwards, the reagent in the pipette is discharged, and the upper end of the pipette does not need to be sealed by fingers during liquid suction, the upper end of the pipette is always in a sealed state to prevent the reagent from leaking out of the pipette, and when the threaded rod 111 is rotated, the position of the threaded connection is adjusted at the adjusting block 112, so that the position of the limiting rod 113 is adjusted, the bottom of the limiting rod 113 is in contact with the top of the sealing tube 5, the position of the pull rod 7 descending is limited through the limiting rod 113, the liquid discharge amount of the pipette is controlled, and the reagent can be discharged quantitatively.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A reagent sampling device for chemistry experiments, characterized by comprising: a connecting pipe (1), wherein the inner wall of the connecting pipe (1) is fixedly connected with a sealing ring (2), the bottom of the connecting pipe (1) is fixedly connected with a fixing mechanism (3), the inner wall of the connecting pipe (1) is in threaded connection with an installation pipe (4), the inner wall of the installation tube (4) is fixedly connected with a limiting ring, the top of the installation tube (4) is fixedly connected with a sealing tube (5), the inner wall of the sealing tube (5) is connected with a sealing plug (6) in a sliding way, the top end of the sealing plug (6) is fixedly connected with a pull rod (7), the top end of the pull rod (7) penetrates through the mounting tube (4) and is fixedly connected with a holding block (8), the surface of the pull rod (7) is provided with scale marks, the top of the pull rod (7) is provided with a sliding chute (9), limiting grooves (10) are formed in two sides of the sliding groove (9), and a limiting mechanism (11) is arranged on the inner wall of the sliding groove (9).

2. The reagent sampling device for the chemical experiment according to claim 1, wherein the number of the fixing mechanisms (3) is two, two fixing mechanisms (3) are symmetrically arranged by taking a central vertical plane passing through the connecting pipe (1) as a symmetrical plane, each fixing mechanism (3) comprises a fixing plate (31), a clamping plate (32) and a spring (33), the fixing plate (31) is fixedly connected to the bottom of the connecting pipe (1), a groove is formed in the side surface of the fixing plate (31), the inner wall of the groove is fixedly connected with one end of the spring (33), and the other end of the spring (33) is fixedly connected with the surface of the clamping plate (32).

3. A reagent sampling device for chemical experiments according to claim 2, characterized in that the bottom of the clamping plate (32) is fixedly connected with the guide plate (12), and the inner side of the clamping plate (32) is fixedly connected with the soft cushion (13).

4. The reagent sampling device for the chemical experiment according to claim 2, wherein a guide rod (14) is fixedly connected to the surface of the clamping plate (32), the guide rod (14) penetrates through the fixing plate (31) and is fixedly connected with a limiting block (15), and the spring (33) is sleeved on the surface of the guide rod (14).

5. The reagent sampling device for the chemical experiment of claim 1, wherein the limiting mechanism (11) comprises a threaded rod (111), an adjusting block (112) and a limiting rod (113), bearings are embedded in the surface of the holding block (8) and the bottom of the inner wall of the sliding groove (9), the inner wall of each bearing is fixedly connected with the surface of the threaded rod (111), the adjusting block (112) is in threaded connection with the inner wall of the threaded rod (111), the adjusting block (112) is in sliding connection with the inner wall of the sliding groove (9), the limiting rod (113) is fixedly connected with the surface of the adjusting block (112), and the limiting rod (113) is in sliding connection with the inner wall of the limiting groove (10).

6. The reagent sampling device for the chemical experiment according to claim 1, characterized in that the surface of the connecting pipe (1) is fixedly connected with two anti-slip sheets (16), the number of the anti-slip sheets (16) is two, the two anti-slip sheets (16) are symmetrically arranged by taking a central vertical plane passing through the connecting pipe (1) as a symmetrical plane, and the surface of the anti-slip sheet (16) is provided with an anti-slip groove (9).