CN114308171B - Burette for chemistry experiments - Google Patents
Burette for chemistry experiments Download PDFInfo
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- CN114308171B CN114308171B CN202210001326.0A CN202210001326A CN114308171B CN 114308171 B CN114308171 B CN 114308171B CN 202210001326 A CN202210001326 A CN 202210001326A CN 114308171 B CN114308171 B CN 114308171B
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Abstract
The invention discloses a burette for a chemical experiment, which relates to the technical field of chemical experiment equipment and comprises a supporting frame, an extrusion mechanism, a plurality of pipe bodies and a plurality of fixing mechanisms, wherein the supporting frame comprises a supporting plate, a top plate and a plurality of guide columns, each pipe body comprises a rubber head, a fixing pipe, an adjusting pipe, an inverted cone-shaped pipe, a bottom pipe and a dripper which are sequentially arranged from top to bottom, a plurality of mounting holes are formed in the supporting plate, the upper end of the fixing pipe is arranged in the mounting hole, the fixing mechanism is used for fixing the fixing pipe on the supporting plate, and the rubber head is positioned above the supporting plate; the extrusion mechanism comprises extrusion columns, extrusion plates and elastic assemblies, the extrusion plates are slidably mounted on the guide columns, the extrusion plates are located between the rubber heads and the top plate, the elastic assemblies are mounted between the extrusion plates and the supporting plate, and the extrusion columns are fixed at the tops of the extrusion plates. The dropper for the chemical experiments is simple and convenient to operate, improves the working efficiency, and is convenient to adjust the length so as to be capable of being matched with different use scenes.
Description
Technical Field
The invention relates to the technical field of chemical experiment equipment, in particular to a dropper for a chemical experiment.
Background
In chemical teaching, chemical experiments are an extremely important teaching means, a rubber-tipped dropper is a commonly used experimental instrument in chemical experiments, and the rubber-tipped dropper is also called a rubber-cap dropper and is an instrument for sucking or dropping a small amount of liquid reagents. The existing dropper can only be used independently, and can not absorb and drip various liquids simultaneously, so that the operation process is complicated, and the working efficiency is reduced; meanwhile, the length of the existing dropper is fixed, so that droppers of different models need to be replaced when liquid in a long and thin container needs to be sucked, the acquisition cost of laboratory for experimental equipment is increased, and the droppers are difficult to match different use scenes.
Disclosure of Invention
In order to solve the technical problems, the invention provides the dropper for the chemical experiment, which is simple and convenient in operation process, improves the working efficiency, is convenient for adjusting the length and can be matched with different use scenes.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a burette for a chemical experiment, which comprises a supporting frame, an extrusion mechanism, a plurality of pipe bodies and a plurality of fixing mechanisms, wherein the supporting frame comprises a supporting plate, a top plate and a plurality of guide columns, the plurality of guide columns are fixed above the supporting plate, and the top plate can be detachably arranged above the plurality of guide columns; the pipe body comprises a rubber head, a fixed pipe, an adjusting pipe, an inverted cone-shaped pipe, a bottom pipe and a dripper which are sequentially arranged from top to bottom, the rubber head is fixed on the fixed pipe, the adjusting pipe is sleeved outside the lower end of the fixed pipe in a threaded manner, the inverted cone-shaped pipe is fixed at the lower end of the adjusting pipe, the bottom pipe is fixed at the lower end of the inverted cone-shaped pipe, the dripper is sleeved outside the lower end of the bottom pipe in a threaded manner, a plurality of mounting holes are formed in the supporting plate, the lower surface of the supporting plate is provided with fixing mechanisms which correspond to the mounting holes one by one, the upper end of the fixed pipe is arranged in the mounting holes, the fixing mechanisms are used for fixing the fixed pipe on the supporting plate, and the rubber head is positioned above the supporting plate; the extrusion mechanism includes extrusion post, stripper plate and elastic component, stripper plate slidable mounting is in a plurality of on the guide post, just the stripper plate is located the rubber head with between the roof, elastic component install in the stripper plate with between the backup pad, the extrusion post is fixed in the top of stripper plate, the extrusion post passes the roof extends the outside, the extrusion post can for the roof reciprocates.
Preferably, the support frame further comprises a plurality of first screws, each guide post is connected with the top plate through one first screw, and a plurality of handles are arranged on the upper surface of the top plate.
Preferably, the pressing mechanism further comprises a plurality of guide blocks, each guide block is slidably mounted on one guide column, and the plurality of guide blocks are fixed on the pressing plate.
Preferably, the elastic assembly includes a plurality of springs, and upper and lower ends of each of the springs are fixed to the lower surface of the pressing plate and the upper surface of the supporting plate, respectively.
Preferably, the body still includes seal assembly, the lower part of bottom pipe has set gradually a plurality of punch combination from top to bottom, each punch combination includes a plurality of through-holes that set up along circumference, seal assembly cover establish install in the outside of bottom pipe, seal assembly includes the go-between and is fixed in the sealing ring of go-between lower extreme, be provided with the sealing washer on the inner wall of sealing ring, go-between thread bush is located the outside of bottom pipe.
Preferably, the inside of dripper is provided with threaded connection section, back taper hole section and the round hole section that from top to bottom set gradually, threaded connection section be used for with bottom union coupling, the internal diameter of bottom pipe is greater than the internal diameter of round hole section.
Preferably, the fixing mechanism comprises a first fixing assembly and a second fixing assembly, the first fixing assembly comprises a first vertical plate, a first arc-shaped plate and a first rubber layer, the first vertical plate is fixed on the lower surface of the supporting plate and located on one side of the mounting hole, the first arc-shaped plate is fixed on the lower portion of the first vertical plate close to one side of the mounting hole, and the first rubber layer is arranged on the inner side of the first arc-shaped plate; the second fixing assembly comprises a second vertical plate, a second arc-shaped plate, a second rubber layer, a transverse plate, an inclined reinforcing rod, a sliding block and a plurality of second screws, a sliding groove is formed in the lower surface of the supporting plate and located on the other side of the mounting hole, the second arc-shaped plate is fixed to the lower portion, close to one side of the mounting hole, of the second vertical plate, the second rubber layer is arranged on the inner side of the second arc-shaped plate, the transverse plate is fixed to the lower portion, far away from one side of the mounting hole, of the second vertical plate, the sliding block is fixed above the transverse plate, the sliding block is installed in the sliding groove in a sliding mode and used for driving the second arc-shaped plate to be close to or far away from the first arc-shaped plate, the transverse plate is fixed to the supporting plate through the plurality of second screws, and two ends of the inclined reinforcing rod are fixed to the transverse plate and the second vertical plate respectively.
Preferably, the first arc is close to be provided with a plurality of draw-in grooves on the terminal surface of second arc, the second arc is close to be provided with a plurality of fixture blocks on the terminal surface of first arc, the fixture block with draw-in groove one-to-one and structure phase-match.
Preferably, the sliding blocks are T-shaped blocks, the sliding grooves are T-shaped grooves, and each second fixing assembly comprises two sliding blocks.
Preferably, an elastic layer is arranged on the inner wall of the mounting hole.
Compared with the prior art, the invention achieves the following technical effects:
the invention provides a burette for chemical experiments, which comprises a supporting frame, an extrusion mechanism, a plurality of pipe bodies and a plurality of fixing mechanisms, wherein the pipe bodies comprise rubber heads, a fixing pipe, an adjusting pipe, an inverted cone-shaped pipe, a bottom pipe and a dripper which are sequentially arranged from top to bottom, the adjusting pipe is sleeved outside the lower end of the fixing pipe in a threaded manner, the adjusting pipe can be rotated to change the relative position of the adjusting pipe and the fixing pipe, so that the integral length of the pipe bodies can be adjusted, when liquid in a slender container needs to be sucked, burettes of different types do not need to be replaced, and the burette can be matched with different use scenes. Be provided with a plurality of mounting holes in the backup pad, the lower surface of backup pad is provided with the fixed establishment with the mounting hole one-to-one, the upper end of fixed pipe sets up in the mounting hole, fixed establishment is arranged in being fixed in the backup pad with fixed pipe, extrusion mechanism includes the extrusion post, stripper plate and elastic component, in using, press the stripper plate downwards through the extrusion post and can extrude a plurality of rubber heads simultaneously, stretch into different liquids with a plurality of bodys, loosen the extrusion post, the stripper plate moves upward under elastic component's effect and resets, the rubber head resets after the extrusion force disappears, make a plurality of bodys absorb liquid simultaneously, later aim at different containers that need titrate respectively with each body, press the extrusion post downwards and realize dripping simultaneously of liquid in a plurality of bodys, and then make operation process simple and convenient, and high work efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a dropper for chemical experiments according to the present invention;
fig. 2 is a schematic structural view of a pipe body in the dropper for chemical experiments provided by the invention;
FIG. 3 is a schematic structural view of a sealing ring in the dropper for chemical experiments according to the present invention;
FIG. 4 is a schematic structural view of a dropper in the dropper for chemical experiments provided by the present invention;
FIG. 5 is a schematic structural view of a first fixing assembly of the dropper for chemical experiments according to the present invention;
fig. 6 is a schematic structural view of a second fixing assembly in the dropper for chemical experiments according to the present invention.
Description of the reference numerals: 100. a dropper for chemical experiments; 1. a support plate; 2. a guide post; 3. a top plate; 4. a first screw; 5. a handle; 6. extruding the column; 7. a compression plate; 8. a spring; 9. a guide block; 10. a rubber head; 11. a fixed tube; 12. an adjusting tube; 13. a reverse tapered tube; 14. a bottom tube; 15. a dripper; 16. a through hole; 17. a connecting ring; 18. a seal ring; 19. a threaded connection section; 20. an inverted conical bore section; 21. a circular hole section; 22. a first vertical plate; 23. a first arc-shaped plate; 24. a first rubber layer; 25. a card slot; 26. a second vertical plate; 27. a second arc-shaped plate; 28. a second rubber layer; 29. a clamping block; 30. a transverse plate; 31. an inclined stiffener; 32. a slider; 33. a second screw; 34. a chute; 35. an elastic layer; 36. and (5) sealing rings.
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.
The invention aims to provide a dropper for chemical experiments, which is simple and convenient in operation process, improves the working efficiency, is convenient for adjusting the length and can be matched with different use scenes.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
As shown in fig. 1 to 6, the dropper 100 for chemical experiments according to the present embodiment includes a supporting frame, an extruding mechanism, a plurality of tubes, and a plurality of fixing mechanisms, wherein the supporting frame includes a supporting plate 1, a top plate 3, and a plurality of guide posts 2, the plurality of guide posts 2 are fixed above the supporting plate 1, and the top plate 3 is detachably mounted above the plurality of guide posts 2; the body is including the rubber head 10 that from top to bottom sets gradually, fixed pipe 11, regulating tube 12, back taper pipe 13, bottom pipe 14 and water dropper 15, rubber head 10 is fixed in on the fixed pipe 11, the outside of fixed pipe 11 lower extreme is located to regulating tube 12 thread bush, back taper pipe 13 is fixed in the lower extreme of regulating tube 12, bottom pipe 14 is fixed in the lower extreme of back taper pipe 13, the outside of bottom pipe 14 lower extreme is located to water dropper 15 thread bush, can change the relative position of regulating tube 12 and fixed pipe 11 through rotating regulating tube 12, and then realize the regulation of body overall length, when liquid absorbs in the long and thin container when needs, need not to change the burette of different models, make the burette can match different use scenes. Specifically, the adjusting pipe 12, the inverted conical pipe 13 and the bottom pipe 14 are of an integrated structure. The supporting plate 1 is provided with a plurality of mounting holes, the lower surface of the supporting plate 1 is provided with fixing mechanisms which correspond to the mounting holes one by one, the upper ends of the fixing pipes 11 are arranged in the mounting holes, the fixing mechanisms are used for fixing the fixing pipes 11 on the supporting plate 1, and the rubber heads 10 are positioned above the supporting plate 1; extrusion mechanism includes extrusion post 6, stripper plate 7 and elastic component, and stripper plate 7 slidable mounting is on a plurality of guide posts 2, and stripper plate 7 is located between rubber head 10 and the roof 3, and elastic component installs between stripper plate 7 and backup pad 1, and extrusion post 6 is fixed in the top of stripper plate 7, and extrusion post 6 passes roof 3 and extends the outside, and extrusion post 6 can reciprocate for roof 3. During the use, press extrusion board 7 downwards through extrusion column 6 and can extrude a plurality of rubber head 10 simultaneously, stretch into different liquid with a plurality of bodys, loosen extrusion column 6, extrusion board 7 upwards moves under elastic component's effect and resets, rubber head 10 resets after the extrusion force disappears, make a plurality of bodys absorb liquid simultaneously, later aim at different containers that need titrate respectively with each body, press extrusion column 6 downwards and realize dripping when a plurality of bodys in the liquid, and then make operation process simple and convenient, and the work efficiency is improved. When it is necessary to control the dripping liquid of each tube individually, the rubber head 10 that presses each tube individually may be selected.
Specifically, the supporting frame further comprises a plurality of first screws 4, each guide post 2 is connected with the top plate 3 through one first screw 4, and when the pipe body needs to be replaced, the top plate 3 and the pressing plate 7 can be removed after the first screws 4 are detached. The upper surface of the top plate 3 is provided with a plurality of handles 5, by which the entire apparatus can be easily held in operation.
The extrusion mechanism further comprises a plurality of guide blocks 9, each guide block 9 is slidably mounted on one guide column 2, the guide blocks 9 are all fixed on the extrusion plate 7, and the guide blocks 9 are matched with the guide columns 2 to guide the up-and-down movement of the extrusion plate 7.
The elastic component comprises a plurality of springs 8, and the upper end and the lower end of each spring 8 are respectively fixed on the lower surface of the extrusion plate 7 and the upper surface of the supporting plate 1.
As shown in fig. 2 and fig. 3, the tube body further includes a sealing assembly, a plurality of hole groups are sequentially disposed on the lower portion of the bottom tube 14 from top to bottom, each hole group includes a plurality of through holes 16 disposed along the circumferential direction, the sealing assembly is sleeved on the outer portion of the bottom tube 14, the sealing assembly includes a connecting ring 17 and a sealing ring 18 fixed on the lower end of the connecting ring 17, a sealing ring 36 is disposed on the inner wall of the sealing ring 18, and the connecting ring 17 is threadedly sleeved on the outer portion of the bottom tube 14. The suction volume of the pipe body can be controlled by arranging a plurality of hole groups to be matched with the sealing assembly, specifically, when a large suction volume is needed, the sealing ring 18 does not cover any hole group, when the suction volume is needed to be reduced, the connecting ring 17 is screwed downwards to enable the sealing ring 18 to cover and seal one or more hole groups, and therefore the suction volume is adjusted according to actual requirements.
As shown in fig. 4, the interior of the dripper 15 is provided with a threaded connection section 19, an inverted conical hole section 20 and a circular hole section 21 which are sequentially arranged from top to bottom, the threaded connection section 19 is used for being connected with the bottom pipe 14, and the inner diameter of the bottom pipe 14 is larger than that of the circular hole section 21. Take off on having bottom pipe 14 with water dropper 15 when absorbing liquid, avoid reducing absorption efficiency, when needs comparatively accurately control the dropping liquid volume, with water dropper 15 install on bottom pipe 14 can.
As shown in fig. 5 and 6, the fixing mechanism includes a first fixing component and a second fixing component, the first fixing component includes a first vertical plate 22, a first arc-shaped plate 23 and a first rubber layer 24, the first vertical plate 22 is fixed on the lower surface of the support plate 1 and is located on one side of the mounting hole, the first arc-shaped plate 23 is fixed on the lower portion of the first vertical plate 22 close to one side of the mounting hole, and the first rubber layer 24 is arranged on the inner side of the first arc-shaped plate 23; the second fixing component comprises a second vertical plate 26, a second arc-shaped plate 27, a second rubber layer 28, a transverse plate 30, an inclined reinforcing rod 31, a sliding block 32 and a plurality of second screws 33, a sliding groove 34 is formed in the lower surface of the supporting plate 1, the sliding groove 34 is located on the other side of the mounting hole, the second arc-shaped plate 27 is fixed to the lower portion, close to one side of the mounting hole, of the second vertical plate 26, the second rubber layer 28 is arranged on the inner side of the second arc-shaped plate 27, the transverse plate 30 is fixed to the lower portion, far away from one side of the mounting hole, of the second vertical plate 26, the sliding block 32 is fixed to the upper portion of the transverse plate 30, the sliding block 32 is slidably installed in the sliding groove 34, the sliding block 32 is structurally matched with the sliding groove 34, the sliding block 32 is used for driving the second arc-shaped plate 27 to be close to or far away from the first arc-shaped plate 23, the sliding block 32 and the sliding groove 34 are matched with a structure capable of guiding the movement of the transverse plate 30, the plurality of the second screws 33 are used for fixing the transverse plate 30 on the supporting plate 1, and two ends of the inclined reinforcing rod 31 are respectively fixed to the transverse plate 30 and the second vertical plate 26. The first arc-shaped plate 23 and the second arc-shaped plate 27 are initially in a separated state, when the pipe body is installed, the fixing pipe 11 and the adjusting pipe 12 are disassembled, the fixing pipe 11 is inserted into the installation hole from the upper side of the supporting plate 1 and extends to the lower side of the supporting plate 1, one side of the fixing pipe 11 is in contact with the first rubber layer 24 on the inner side of the first arc-shaped plate 23, the transverse plate 30 is pushed to move towards the fixing pipe 11, the second arc-shaped plate 27 moves towards the first arc-shaped plate 23, the fixing pipe 11 is clamped and fixed by the second arc-shaped plate 27 and the first arc-shaped plate 23, the transverse plate 30 is fixed on the supporting plate 1 through the second screw 33, and then the adjusting pipe 12 is installed below the fixing pipe 11.
A plurality of clamping grooves 25 are formed in the end face, close to the second arc-shaped plate 27, of the first arc-shaped plate 23, a plurality of clamping blocks 29 are arranged on the end face, close to the first arc-shaped plate 23, of the second arc-shaped plate 27, the clamping blocks 29 are in one-to-one correspondence with the clamping grooves 25 and are structurally matched with the clamping grooves 25, and when the second arc-shaped plate 27 is in butt joint with the first arc-shaped plate 23, each clamping block 29 is inserted into one clamping groove 25, so that the second arc-shaped plate 27 is connected with the first arc-shaped plate 23 more firmly.
In this embodiment, the sliding block 32 is a T-shaped block, the sliding groove 34 is a T-shaped groove, and the second fixing component can be hung below the supporting plate 1 when the second screw 33 is not installed by the T-shaped block. Each second fixing component comprises two sliding blocks 32, and the two sliding blocks 32 in each second fixing component are correspondingly arranged in the two sliding grooves 34, so that the second fixing component is more stable when sliding.
In this embodiment, the inner wall of the mounting hole is provided with an elastic layer 35, thereby avoiding collision of the fixing tube 11.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, this summary should not be construed as limiting the invention.
Claims (8)
1. The burette for the chemical experiment is characterized by comprising a supporting frame, an extrusion mechanism, a plurality of pipe bodies and a plurality of fixing mechanisms, wherein the supporting frame comprises a supporting plate, a top plate and a plurality of guide columns, the plurality of guide columns are fixed above the supporting plate, and the top plate can be detachably arranged above the plurality of guide columns; the pipe body comprises a rubber head, a fixed pipe, an adjusting pipe, an inverted cone-shaped pipe, a bottom pipe and a dripper which are sequentially arranged from top to bottom, the rubber head is fixed on the fixed pipe, the adjusting pipe is sleeved outside the lower end of the fixed pipe in a threaded manner, the inverted cone-shaped pipe is fixed at the lower end of the adjusting pipe, the bottom pipe is fixed at the lower end of the inverted cone-shaped pipe, the dripper is sleeved outside the lower end of the bottom pipe in a threaded manner, a plurality of mounting holes are formed in the supporting plate, the lower surface of the supporting plate is provided with fixing mechanisms which correspond to the mounting holes one by one, the upper end of the fixed pipe is arranged in the mounting holes, the fixing mechanisms are used for fixing the fixed pipe on the supporting plate, and the rubber head is positioned above the supporting plate; the extrusion mechanism comprises extrusion columns, extrusion plates and elastic assemblies, the extrusion plates are slidably mounted on the guide columns, the extrusion plates are located between the rubber heads and the top plate, the elastic assemblies are mounted between the extrusion plates and the supporting plate, the extrusion columns are fixed to the tops of the extrusion plates, the extrusion columns penetrate through the top plate to extend to the outside, and the extrusion columns can move up and down relative to the top plate; the extrusion mechanism further comprises a plurality of guide blocks, each guide block is slidably mounted on one guide column, and the plurality of guide blocks are fixed on the extrusion plate; the fixing mechanism comprises a first fixing assembly and a second fixing assembly, the first fixing assembly comprises a first vertical plate, a first arc-shaped plate and a first rubber layer, the first vertical plate is fixed on the lower surface of the supporting plate and located on one side of the mounting hole, the first arc-shaped plate is fixed on the lower portion, close to one side of the mounting hole, of the first vertical plate, and the first rubber layer is arranged on the inner side of the first arc-shaped plate; the second fixing assembly comprises a second vertical plate, a second arc-shaped plate, a second rubber layer, a transverse plate, an inclined reinforcing rod, a sliding block and a plurality of second screws, a sliding groove is formed in the lower surface of the supporting plate and located on the other side of the mounting hole, the second arc-shaped plate is fixed to the lower portion, close to one side of the mounting hole, of the second vertical plate, the second rubber layer is arranged on the inner side of the second arc-shaped plate, the transverse plate is fixed to the lower portion, far away from one side of the mounting hole, of the second vertical plate, the sliding block is fixed above the transverse plate, the sliding block is installed in the sliding groove in a sliding mode and used for driving the second arc-shaped plate to be close to or far away from the first arc-shaped plate, the transverse plate is fixed to the supporting plate through the plurality of second screws, and two ends of the inclined reinforcing rod are fixed to the transverse plate and the second vertical plate respectively.
2. The pipette for chemical experiments according to claim 1, wherein the support frame further comprises a plurality of first screws, each of the guide posts is connected to the top plate through one of the first screws, and a plurality of handles are provided on an upper surface of the top plate.
3. The pipette for chemical experiments according to claim 1, wherein the elastic member comprises a plurality of springs, and upper and lower ends of each of the springs are fixed to a lower surface of the pressing plate and an upper surface of the supporting plate, respectively.
4. The dropper for chemical experiments according to claim 1, wherein the tube body further comprises a sealing assembly, the lower portion of the bottom tube is sequentially provided with a plurality of hole groups from top to bottom, each hole group comprises a plurality of through holes arranged along the circumferential direction, the sealing assembly is sleeved on the outer portion of the bottom tube and comprises a connecting ring and a sealing ring fixed on the lower end of the connecting ring, a sealing ring is arranged on the inner wall of the sealing ring, and the connecting ring is sleeved on the outer portion of the bottom tube in a threaded manner.
5. The dropper for chemical experiments according to claim 1, wherein the dropper is provided with a threaded connection section, an inverted conical hole section and a circular hole section which are sequentially arranged from top to bottom, the threaded connection section is used for being connected with the bottom pipe, and the inner diameter of the bottom pipe is larger than that of the circular hole section.
6. The dropper for chemical experiments as claimed in claim 1, wherein a plurality of slots are disposed on the end surface of the first arc-shaped plate close to the second arc-shaped plate, a plurality of clamping blocks are disposed on the end surface of the second arc-shaped plate close to the first arc-shaped plate, and the clamping blocks are in one-to-one correspondence with the slots and are matched in structure.
7. The dropper for chemical experiments according to claim 1, wherein the sliding blocks are T-shaped blocks, the sliding grooves are T-shaped grooves, and each of the second fixing assemblies includes two sliding blocks.
8. The burette for chemical experiments according to claim 1, wherein an elastic layer is disposed on an inner wall of the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210001326.0A CN114308171B (en) | 2022-01-04 | 2022-01-04 | Burette for chemistry experiments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210001326.0A CN114308171B (en) | 2022-01-04 | 2022-01-04 | Burette for chemistry experiments |
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| Publication Number | Publication Date |
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| CN114308171A CN114308171A (en) | 2022-04-12 |
| CN114308171B true CN114308171B (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210001326.0A Active CN114308171B (en) | 2022-01-04 | 2022-01-04 | Burette for chemistry experiments |
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| US6143252A (en) * | 1999-04-12 | 2000-11-07 | The Perkin-Elmer Corporation | Pipetting device with pipette tip for solid phase reactions |
| CN208260794U (en) * | 2018-01-30 | 2018-12-21 | 中国烟草总公司郑州烟草研究院 | The fixed device of chromatogram bottle heating water bath |
| CN212237348U (en) * | 2020-05-07 | 2020-12-29 | 苏州华兴源创科技股份有限公司 | Pipette, liquid transfer mechanism and liquid transfer equipment |
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| FI981919A0 (en) * | 1998-09-08 | 1998-09-08 | Labsystems Oy | Refill pack |
| US20050032241A1 (en) * | 2003-02-26 | 2005-02-10 | Coassin Peter J. | Reagent dispenser and dispensing method |
| CN207287481U (en) * | 2017-10-16 | 2018-05-01 | 淄博市中心医院 | Pipettor for medical inspection |
| CN207694835U (en) * | 2017-12-04 | 2018-08-07 | 福建未来药业有限公司 | A kind of chemistry combined type dropper |
| CN209576724U (en) * | 2019-01-16 | 2019-11-05 | 运城学院 | A kind of Special combined dropper for chemical laboratory |
| CN210410784U (en) * | 2019-06-19 | 2020-04-28 | 南京帝基生物科技有限公司 | Medical science inspection pipetting gun |
| CN212167475U (en) * | 2020-03-24 | 2020-12-18 | 南京诺尔曼生物技术有限公司 | Multi-purpose burette structure of plastics for middle school chemistry teaching |
| CN214020878U (en) * | 2020-10-26 | 2021-08-24 | 华中科技大学同济医学院附属协和医院 | Large-caliber viscous liquid suction gun head |
| CN113245325B (en) * | 2021-06-01 | 2022-04-01 | 哈尔滨学院 | Chemical industry laboratory is with tube cleaning device |
| KR102333337B1 (en) * | 2021-07-14 | 2021-12-02 | (주)민진 | Echo auto dropper |
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2022
- 2022-01-04 CN CN202210001326.0A patent/CN114308171B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6143252A (en) * | 1999-04-12 | 2000-11-07 | The Perkin-Elmer Corporation | Pipetting device with pipette tip for solid phase reactions |
| CN208260794U (en) * | 2018-01-30 | 2018-12-21 | 中国烟草总公司郑州烟草研究院 | The fixed device of chromatogram bottle heating water bath |
| CN212237348U (en) * | 2020-05-07 | 2020-12-29 | 苏州华兴源创科技股份有限公司 | Pipette, liquid transfer mechanism and liquid transfer equipment |
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| CN114308171A (en) | 2022-04-12 |
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