CN112938866A

CN112938866A - Chemistry experiment uses supplementary cork pulling device of glass system volumetric flask in room

Info

Publication number: CN112938866A
Application number: CN202110256745.4A
Authority: CN
Inventors: 张群; 徐玮玮
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-06-11
Anticipated expiration: 2041-03-09
Also published as: CN114803979A; CN112938866B

Abstract

The invention discloses an auxiliary cork pulling device for a glass volumetric flask for a chemical laboratory, which comprises a shell, wherein a through groove is formed in the middle of the shell, a plurality of clamping blocks used for clamping the volumetric flask are arranged at the lower end inside the through groove, the clamping blocks are driven by a rotating frame arranged on the lower end surface of the shell, two observation grooves and two ascending grooves are symmetrically formed in the upper end groove wall of the through groove respectively, a first clamping plate and a second clamping plate are slidably connected inside the two ascending grooves respectively, a first clamping frame and a second clamping frame used for clamping a bottle stopper are fixedly connected to the inner end surfaces of the first clamping plate and the second clamping plate respectively, the first clamping plate and the second clamping plate are both slidably connected with a sliding block through sliding grooves formed in the first clamping plate and the second clamping plate, the sliding block is connected with a screw rod in an engaged manner, and the screw rod is driven by a rotating rod arranged on the outer side wall of the upper end of the shell.

Description

Chemistry experiment uses supplementary cork pulling device of glass system volumetric flask in room

Technical Field

The invention relates to the technical field of experimental articles, in particular to an auxiliary cork pulling device for a glass volumetric flask for a chemical laboratory.

Background

The volumetric flask is the flat container of thin neck pear shape, has ground glass stopper, has the marking on the neck, and the volumetric flask is the accurate utensil for preparing the solution of the volume concentration of accurate certain material, all adopts the glass material generally, is common experimental apparatus in laboratories such as chemistry, biology.

However, sometimes the solution in the bottle is weak alkaline or is left for a long time after preparation, so that the plug is difficult to pull out, which is often very painful for the laboratory staff.

At present, manual cork pulling is generally adopted, but the shape of the cork and the shape of the volumetric flask cause that the manual cork pulling is not good in force application and poor in effect; and the glass material is also inconvenient to implement by excessive vibration or knocking. If the solution in the volumetric flask has low value, the volumetric flask can be immersed in hot water for a certain period of time and then subjected to cork removal, but the method easily causes the solution in the volumetric flask to be polluted; in addition, if the solution has high value, such as some drug intermediate standards, the solution can be taken out by destroying the volumetric flask, but the risk of broken glass pollution still exists. The invention provides an auxiliary cork pulling device for a glass volumetric flask for a chemical laboratory, which aims to solve the problems.

Disclosure of Invention

The invention aims to provide an auxiliary cork pulling device for a glass volumetric flask for a chemical laboratory, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a chemistry experiment is with supplementary cork pulling device of glass system volumetric flask, includes the shell, open at the middle part of shell has the groove of lining up, it is equipped with a plurality of clamp blocks that are used for the centre gripping volumetric flask to link up inslot portion lower extreme, the clamp block is by the commentaries on classics frame drive that the terminal surface was equipped with under the shell, it has two observation tanks and ascending groove to link up to open symmetrically respectively on the upper end cell wall in groove, and the inside difference sliding connection in two ascending grooves has first splint and second splint, respectively fixedly connected with is used for the first double-layered frame and the second double-layered frame of centre gripping bottle plug on the interior terminal surface of first splint and second splint, first splint and second splint all have the slider through the spout sliding connection that has opened on it, the slider is connected with the screw rod meshing, the screw rod is driven by the bull stick that is equipped.

Preferably, the outer side wall of the clamping block is fixedly connected with a mandril, the outer end of the mandril penetrates through the groove wall of the through groove and extends into a hollow groove formed in the shell, and is movably connected with a chute formed in the inner side surface of the rotating ring, the rotating ring is rotatably connected in the hollow groove, the lower side groove wall of the hollow groove is meshed with the rotating frame, and the rotating frame is connected with a fixing rod and a rotating ring in a sliding manner through the upper end of the rotating frame.

Preferably, a circular plate is fixedly sleeved on the side wall of one end, located inside the empty groove, of the ejector rod, and a spring is connected between the circular plate and the wall of the empty groove.

Preferably, the inside of clamp splice is equipped with the heating block that is used for heating the volumetric flask bottle, and the heating block is connected with the external power electricity of conducting rod through fixedly connected with on its lateral wall and is connected.

Preferably, the upper end of screw rod extends to the inside and the fixedly connected with gear of the annular that has on the shell upper end lateral wall, and the gear is connected with the ring gear meshing with the inside rotation of annular and is connected, fixed connection bull stick on the lateral wall of ring gear.

Preferably, the shape of slider is "worker" font, and a plurality of archs of fixedly connected with on its lower extreme inside wall, just the both sides that are located the spout on the lower lateral wall of first splint and second splint all open a plurality of draw-in grooves that correspond each other with the arch.

Compared with the prior art, the invention has the beneficial effects that: the bottle stopper is characterized in that the rotating frame is arranged on the bottle stopper, the clamping blocks are arranged on the rotating frame, the rotating frame is matched with the clamping blocks, the clamping blocks can move towards the middle of the through groove simultaneously by rotating the rotating frame, so that the bottle stopper can be clamped by clamping the bottle stopper, the first clamping frame and the second clamping frame can clamp the upper part of the bottle stopper by pushing the first clamping plate and the second clamping plate, and then the rotating rod can be rotated, so that the first clamping frame and the second clamping frame are driven by the first clamping plate and the second clamping plate to ascend respectively, and the purpose of pulling out the bottle stopper is achieved.

Drawings

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

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an exploded view of the tooth ring and ring groove of the present invention;

FIG. 4 is an exploded view of the first and second clamping frames of the present invention;

FIG. 5 is a schematic view of the connection of the first clamping frame and the second clamping frame according to the present invention;

FIG. 6 is a schematic view of the underside of the first and second clamping plates of the present invention;

FIG. 7 is a schematic view of the inner structure of the camera obscura of the present invention;

FIG. 8 is a schematic view of the connection of the chute and the ejector pin of the present invention;

FIG. 9 is an exploded view of the bezel and swivel of the present invention;

FIG. 10 is a schematic view of the first and second clamping frames of the present invention in use;

FIG. 11 is an enlarged view taken at A of FIG. 2 according to the present invention.

In the figure: 1. the device comprises a shell, 2, a through groove, 3, a clamping block, 4, a rotating frame, 5, an observation groove, 6, a lifting groove, 7, a first clamping plate, 8, a second clamping plate, 9, a first clamping frame, 10, a second clamping frame, 11, a sliding groove, 12, a sliding block, 13, a screw rod, 14, a rotating rod, 15, an ejector rod, 16, an empty groove, 17, a rotating ring, 18, a chute, 19, a fixing rod, 20, a circular plate, 21, a spring, 22, a heating block, 23, a conductive rod, 24, a ring groove, 25, a gear, 26, a toothed ring, 27, a protrusion, 28, a clamping groove, 29, a conductive ring, 30 and a communication groove.

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. 1-11, the present invention provides a technical solution: an auxiliary cork pulling device for a glass volumetric flask for a chemical laboratory comprises a shell 1, wherein a through groove 2 is formed in the middle of the shell 1, the bottleneck of the volumetric flask can be inserted into the through groove 2, a plurality of clamping blocks 3 used for clamping the volumetric flask are arranged at the lower end inside the through groove 2, the inner side surfaces of the clamping blocks 3 are cambered surfaces and can well clamp the bottleneck of the volumetric flask, hard materials are arranged in the clamping blocks 3, a layer of soft rubber is coated outside the clamping blocks, the volumetric flask can be prevented from being damaged when the clamping blocks 3 stably clamp the volumetric flask, the clamping blocks 3 are driven by a rotating frame 4 arranged on the lower end surface of the shell 1, the plurality of clamping blocks 3 can simultaneously move towards the middle of the through groove 2 by rotating the rotating frame 4, so that the clamping blocks 3 clamp the volumetric flask, two observation grooves 5 and two ascending grooves 6 are respectively and symmetrically formed in the upper groove wall of the through groove 2, and the two observation grooves 5 and the two ascending grooves 6 are sequentially and crossly distributed on the groove wall of, the insides of the two ascending grooves 6 are respectively connected with a first clamping plate 7 and a second clamping plate 8 in a sliding manner, the inner end faces of the first clamping plate 7 and the second clamping plate 8 are respectively fixedly connected with a first clamping frame 9 and a second clamping frame 10 for clamping the bottle stopper, the first clamping frame 9 and the second clamping frame 10 are both in a U shape, the thickness of the vertical rod of the first clamping frame 9 is larger than that of the vertical rod of the second clamping frame 10, the thickness of the closed end of the first clamping frame 9 is equal to that of the closed end of the second clamping frame 10, the two vertical rods of the second clamping frame 10 can be inserted into a communicating groove 30 arranged in the two vertical rods on the first clamping frame 9 (as shown in figure 5), one side groove wall and one end groove wall of the communicating groove 30 are communicated with the outside, after the second clamping frame 10 is inserted into the first clamping frame 9, the transverse rod on the second clamping frame 10 and the transverse rod on the first clamping frame 9 can be mutually matched to clamp the upper half part of the bottle stopper, and a abdicating groove is, can let first clamp 9 move smoothly to second splint 8 on (as shown in fig. 5), first splint 7 and second splint 8 all have slider 12 through the spout 11 sliding connection that has opened on it, slider 12 is connected with the meshing of screw rod 13, screw rod 13 is driven by bull stick 14 that is equipped with on the outer wall of shell 1 upper end, and bull stick 14 can make screw rod 13 rotate when rotating around shell 1, and screw rod 13 rotates and can make corresponding slider 12 drive first splint 7 and second splint 8 simultaneously and rise.

Specifically, the outer side wall of the clamping block 3 is fixedly connected with a push rod 15, the outer end of the push rod 15 penetrates through the wall of the through groove 2 and extends into an empty groove 16 formed in the shell 1, and is movably connected with a chute 18 formed on the inner side surface of a rotating ring 17, the rotating ring 17 is rotatably connected in the empty groove 16, the number of the chute 18 is the same as that of the clamping blocks 3, the rotating ring 17 is rotated clockwise as shown in fig. 8, the chute wall of the chute 18 can extrude the push rod 15, so that the push rod 15 drives the clamping block 3 to move towards the middle part of the through groove 2, so that the clamping block 3 clamps the bottleneck of the volumetric flask, the rotating ring 17 is rotatably connected in the empty groove 16, the lower side wall of the empty groove 16 is engaged with the rotating frame 4, as shown in fig. 3, a through circular groove is formed on the lower side wall of the empty groove 16, an internal thread is formed on the inner side wall of the rotating frame 4 and is engaged with the circular groove, the rotating frame 4 is connected with the rotating ring 17 in a sliding manner through a fixing rod 19 fixedly connected with the upper end of the rotating frame 4, the upper end of the fixing rod 19 extends into a through hole formed in the rotating ring 17, and the rotating frame 4 can drive the rotating ring 17 to rotate through the fixing rod 19 when rotating (when the rotating frame 4 rises, the fixing rod 19 only rises in the through hole and cannot contact with and drive the rotating ring 17 to rise).

Because the rotating frame 4 is meshed with the circular groove, the rotating frame 4 can keep the same angle without external force after rotating to any angle, so that the rotating ring 17 can not rotate randomly after rotating to any angle, the chute 18 can be driven to move inwards by the stable driving clamping block 3, and the volumetric flask bottle body can be clamped.

In order to be able to take the device off the volumetric flask better after the use, a spring 21 is provided, specifically, a circular plate 20 is fixedly sleeved on a side wall of one end of the push rod 15 positioned inside the empty groove 16, and a spring 21 is connected between the circular plate 20 and a groove wall of the empty groove 16, one end of the spring 21 is fixedly connected with the circular plate 20, and the other end is fixedly connected with a groove wall of the empty groove 16, the spring 21 can give a certain elastic force to the push rod 15 to make it move towards the inside of the empty groove 16, when the push rod 15 is not extruded by the inclined groove 18 any more, the push rod 15 can drive the clamping block 3 to move towards a central position far away from the through groove 2 under the elastic force of the spring 21, so that the device can be taken off the volumetric flask well after the use.

In order to make the bottle stopper easier to be pulled out, a heating block 22 is arranged to heat the bottle neck, specifically, a heating block 22 for heating the bottle body of the volumetric bottle is arranged in the clamping block 3, the heating block 22 is electrically connected with an external power supply through a conductive rod 23 fixedly connected on the outer side wall of the heating block 22, the heating block 22 can heat the bottle neck of the volumetric bottle to slightly expand with heat and contract with cold, so that the bottle stopper can be pulled out more easily, two conductive rods 23 are connected on each heating block 22, the two conductive rods 23 extend through the wall of the through groove 2 to the inside of the shell 1 to be opened with a hidden groove and are respectively movably connected with two conductive rings 29 in the hidden groove, the two conductive rings 29 are respectively connected with the positive and negative poles of the external power supply, and form a form with the conductive rings 29 when the brush 23 moves along with the heating block 22 (clamping block 3), the heating block 22 can keep the circuit smooth, the heating block 22 is the prior art, and the structure and the working principle are not the technical characteristics of the invention, so the description is not needed, for example, the electric warmer which is widely used at present,

specifically, the piece 22 that generates heat is the metal texture, and its inside heater strip that is equipped with produces heat after the circular telegram, the soft rubber of the outer parcel of the piece 22 that generates heat, the piece 22 that generates heat of metal texture plays certain intensity and can lets the bottleneck that outer rubber can closely laminate the volumetric flask to metal heat conduction is fast through the bottleneck that its outer wrapped rubber membrane can the rapid transfer give the volumetric flask, possesses dual function.

Specifically, the upper end of the screw 13 extends to the inside of the annular groove 24 formed in the outer side wall of the upper end of the housing 1, the gear 25 is fixedly connected with the gear 25, the gear 25 is connected with the annular groove 24 in a rotating manner in a meshing manner, a plurality of teeth are arranged on the inner side wall of the gear 26, the two gears 25 can synchronously rotate by rotating the gear 26, so that the two screws 13 rotate, the two rotating rods 14 are symmetrically connected to the outer side wall of the gear 26, and the gear 26 can rotate by rotating the rotating rods 14.

In order to make the first splint 7 and the second splint 8 rise more stably, be equipped with arch 27 on slider 12, specifically speaking, slider 12's shape is "worker" font, and a plurality of archs 27 of fixedly connected with on its lower extreme inside wall, just the both sides that are located spout 11 on the lower lateral wall of first splint 7 and second splint 8 all open a plurality of draw-in grooves 28 that correspond each other with arch 27, and slider 12 can drive first splint 7 and second splint 8 and rise when rotating screw 13, and the lower extreme lateral wall of slider 12 will exert certain pressure to first splint 7 and second splint 8 this moment to can make protruding 27 and the inseparable joint of draw-in groove 28 together, can make first splint 7 and second splint 8 can not random slip when rising like this.

The 3 stopper forms in fig. 10 are the stopper forms of most volumetric flasks on the market today.

The working principle is as follows: when the device is used, the shell 1 is sleeved on the bottleneck of a volumetric flask, the positions of the first clamping frame 9 and the second clamping frame 10 are determined by observing the groove 5, the first clamping frame 9 and the second clamping frame 10 are positioned below the stopper handle of the flask stopper, then the rotating frame 4 is rotated clockwise while the shell 1 is held so that the clamping block 3 clamps the bottleneck of the volumetric flask (at the moment, the heating block 22 in the clamping block 3 is electrified to heat the bottleneck), then the first clamping plate 7 and the second clamping plate 8 are pushed towards the middle part of the groove 2 at the same time, the first clamping frame 9 and the second clamping frame 10 clamp the stopper handle, then the rotating rod 14 is rotated clockwise, the toothed ring 26 drives the gear 25 to rotate clockwise, so that the screw 13 also rotates clockwise, then the first clamping plate 7 and the second clamping plate 8 respectively drive the first clamping frame 9 and the second clamping frame 10 to ascend, and the upward pulling force is improved through the transmission between teeth and the meshing of the screw 13, realizing plug pulling; after the cork is removed, the rotating frame 4 is rotated anticlockwise to enable the clamping block 3 not to clamp the bottleneck of the volumetric flask, and at the moment, the device can be taken down from the volumetric flask.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a chemistry experiment uses supplementary cork pulling device of glass system volumetric flask which characterized in that: comprises a shell (1) and a through groove (2) in the middle of the shell (1), wherein a plurality of clamping blocks (3) used for clamping volumetric flasks are arranged in the through groove (2),

the clamping blocks (3) are driven to move by the rotating frame (4) at the same time,

it has two ascending grooves (6) to open respectively the symmetry on the cell wall of groove (2) to link up, and the inside difference sliding connection of two ascending grooves (6) has first splint (7) and second splint (8), on the interior terminal surface of first splint (7) and second splint (8) respectively fixedly connected with be used for the first double-layered frame (9) and the second double-layered frame (10) of centre gripping bottle plug, first splint (7) and second splint (8) all have slider (12) through spout (11) sliding connection who opens on it, slider (12) are connected with screw rod (13) meshing, screw rod (13) are driven in order to drive first double-layered frame (9) and the second clamp frame (10) centre gripping that is equipped with on by shell (1) upper end lateral wall and upwards break away from the volumetric flask.

2. The auxiliary cork-pulling device for glass volumetric flasks for chemical laboratories according to claim 1, characterized in that: fixedly connected with ejector pin (15) on the lateral wall of clamp splice (3), the outer end of ejector pin (15) runs through the cell wall of through groove (2) and extends to in the inside open dead slot (16) of shell (1) to with open chute (18) swing joint on swivel (17) medial surface, swivel (17) rotate to be connected in the inside of dead slot (16), and the downside cell wall and the revolving frame (4) meshing of dead lever (19) and the revolving frame (17) sliding connection that have through its upper end fixed connection of revolving frame (4).

3. The auxiliary cork-removing device for glass volumetric flasks for chemical laboratories according to claim 2, characterized in that: the side wall of one end, positioned inside the empty groove (16), of the ejector rod (15) is fixedly sleeved with a circular plate (20), and a spring (21) is connected between the circular plate (20) and the wall of the empty groove (16).

4. The auxiliary cork-pulling device for glass volumetric flasks for chemical laboratories according to claim 1, characterized in that: the heating block (22) for heating the volumetric flask body is arranged in the clamping block (3), and the heating block (22) is electrically connected with an external power supply of the conducting rod (23) through the outer side wall of the heating block.

5. The auxiliary cork-pulling device for glass volumetric flasks for chemical laboratories according to claim 1, characterized in that: the upper end of screw rod (13) extends to inside and fixedly connected with gear (25) of the annular (24) that open on shell (1) upper end lateral wall, and gear (25) and annular (24) internal rotation are connected with ring gear (26) meshing connection, fixed connection bull stick (14) on the lateral wall of ring gear (26).

6. The auxiliary cork-pulling device for glass volumetric flasks for chemical laboratories according to claim 1, characterized in that: the shape of slider (12) is "worker" font, and fixedly connected with a plurality of archs (27) on its lower extreme inside wall, just be located both sides of spout (11) and all opened a plurality of draw-in grooves (28) that correspond each other with arch (27) on the lower lateral wall of first splint (7) and second splint (8).