CN216280393U

CN216280393U - Liftable titration frame

Info

Publication number: CN216280393U
Application number: CN202121676045.2U
Authority: CN
Inventors: 何海周; 袁金梅; 杨星月; 盛阳春; 刘攀锋; 朱银龙; 张和平; 李群
Original assignee: Jiangsu Liding Environmental Protection Equipment Co ltd
Current assignee: Jiangsu Liding Environmental Protection Equipment Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-04-12
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses a liftable titration frame which comprises a titration table and a support rod vertically arranged on the titration table, wherein a lifting type adjusting device is arranged on the support rod, a rear side plate is fixed on the adjusting device, a left side plate and a right side plate which are perpendicular to the rear side plate are arranged on the rear side plate, guide strips in the vertical direction are respectively arranged at the front parts of the inner sides of the left side plate and the right side plate, a U-shaped sliding piece is matched between the two guide strips in a sliding mode, a butterfly clamp is fixed on the outer side of the U-shaped sliding piece, a rack which is parallel to the support rod is fixed on the inner side of the U-shaped sliding piece, a rotating shaft is arranged between the left side plate and the right side plate and is respectively connected with the left side plate and the right side plate in a rotating mode, and one end of the rotating shaft extends out of the left side plate and is connected with a knob which drives the rotating shaft to rotate. The utility model solves the problem that the burette needs to be repeatedly moved for many times in the titration experiment process through the matching of the knob, the rotating shaft, the helical gear and the helical rack, and improves the working efficiency in the large-scale titration experiment.

Description

Liftable titration frame

Technical Field

The utility model relates to the technical field of burette stands for chemical tests, in particular to a liftable burette stand.

Background

Titration is a means of quantitative analysis, and is also a chemical experiment operation, which determines the content of a certain solute through the quantitative reaction of two solutions. The end point of the titration is indicated by the color change of the indicator, and the assay result is calculated by visual inspection of the consumed volume of the standard solution.

Traditional titration outfit, the design is comparatively crude, and wherein the buret is fixed on the butterfly clamp of iron stand platform bracing piece, before titrating the experiment, takes off the buret, pours into the titration liquid into the buret, then zero setting operation, zero setting operation completion back, will titrate the pipe and press from both sides the butterfly on, titrate the experiment, after titrating the experiment, take off the buret once more, the laboratory technician adjusts the height of buret according to sight height and liquid level height, carries out the reading. The removal buret that need relapse a lot of in the above experimentation can lead to titrating the experiment time and increase, and work efficiency reduces, especially when facing big titration in batches and detecting, and current titration outfit can consume a large amount of time on the reading.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem of providing a liftable burette, wherein a guide strip on a right side plate is matched with a U-shaped sliding part, and when a knob is rotated, a helical gear drives a meshed helical rack to move, so that a butterfly clamp on the U-shaped sliding part moves up and down, the problem that a burette needs to be moved repeatedly in the experiment process is solved, and the working efficiency of an experimenter is greatly improved.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a liftable titration frame, including titrating the platform, the vertical bracing piece of establishing on titrating the platform, be equipped with the adjusting device of over-and-under type on the bracing piece, adjusting device is last to be fixed with the posterior lateral plate, be equipped with vertically left side board and right side board with it on the posterior lateral plate, left side board and right side inboard front portion are equipped with the gib block of vertical direction respectively, two sliding fit has U type slider between the gib block, the U type slider outside is fixed with the butterfly clamp, U type slider inboard is fixed with the rack parallel with the bracing piece, be equipped with the pivot between left side board and the right side board, the pivot rotates with left side board and right side board respectively and is connected, the one end of pivot is stretched out in left side board and fixed mounting has the rotatory knob of drive pivot, be fixed with in the pivot with rack toothing's gear.

Furthermore, the adjusting device comprises a sliding hoop, the sliding hoop is sleeved on the supporting rod, a limiting bolt is arranged on the sliding hoop, and the sliding hoop is controlled to move and be fixed on the supporting rod by adjusting the tightness of the limiting bolt.

Further, the gear is a helical gear, and the rack is a helical rack.

Further, the support rod is fixed at the center of the titration table.

Furthermore, the butterfly clamp is fixed on the upper half part of the outer side of the U-shaped sliding part, and the left end and the right end of the butterfly clamp extend out of the left side plate and the right side plate.

Furthermore, the rear side plate, the left side plate and the right side plate are of an integrally formed structure.

Further, a sliding groove is formed in the guide strip, strip-shaped protrusions corresponding to the sliding groove are arranged on two sides of the U-shaped sliding piece, and the strip-shaped protrusions are embedded in the sliding groove and slide up and down along the sliding groove.

Further, a gap is formed between the sliding groove and the strip-shaped protrusion, and damping oil is additionally arranged.

The utility model has the beneficial effects that:

1 through setting up gib block, U type slider, pivot, gear and rack, the knob drives gear revolve, and the gear drives rack and the U type slider of meshing with it and reciprocates, and buret reciprocated on the U type slider drives the butterfly clamp for to buret height's regulation is accurate more fast in the experimentation, and the reading of the laboratory technician's data of being convenient for, has improved work efficiency greatly.

And 2, the knob, the helical gear and the helical rack are arranged, the helical gear has better meshing performance and higher bearing capacity, and the movement of the U-shaped sliding part caused by the gravity of the burette is effectively avoided. Meanwhile, due to the design of the bevel gear, the noise is low, the service life is long, the transmission is stable, an experimenter can conveniently find a position suitable for a sight line to read, and the accuracy of experimental data is further improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a liftable titration frame of the present invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Description of reference numerals: 1. a titration table; 2. a support bar; 3. a rear side plate; 4. a left side plate; 5. a right side plate; 6. a guide strip; 7. a U-shaped slider; 8. a butterfly clip; 9. a rack; 10. a rotating shaft; 11. a knob; 12. a gear; 13. a sliding ferrule; 14. and a limiting bolt.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and will thus define the scope of the utility model more clearly and clearly.

Referring to fig. 1 to 2, an embodiment of the present invention includes a liftable titration frame, which includes a titration table 1, a support rod 2 vertically disposed on the titration table 1, a lifting adjusting device disposed on the support rod 2, a rear side plate 3 fixed on the adjusting device, a left side plate 4 (not all shown in fig. 1) and a right side plate 5 perpendicular to the rear side plate 3 disposed on the rear side plate 3, vertical guide bars 6 disposed at front portions of inner sides of the left side plate 4 and the right side plate 5, a U-shaped sliding member 7 (not all shown in fig. 1) slidably fitted between the two guide bars 6, a butterfly clamp 8 fixed on an outer side of the U-shaped sliding member 7, a rack 9 parallel to the support rod 2 fixed on an inner side of the U-shaped sliding member 7, a rotating shaft 10 disposed between the left side plate 4 and the right side plate 5, the rotating shaft 10 rotatably connected to the left side plate 4 and the right side plate 5, one end of the rotating shaft 10 extends out of the left side plate 4 and is fixedly provided with a knob 11 which drives the rotating shaft 10 to rotate, and a gear 12 which is meshed with the rack 9 is fixed on the rotating shaft 10.

In the liftable titration frame, the adjusting device comprises a sliding hoop 13, the sliding hoop 13 is sleeved on the support rod 2, the sliding hoop 13 is provided with a limiting bolt 14, and the movement and fixation of the sliding hoop 13 on the support rod 2 are controlled by adjusting the tightness of the limiting bolt 14.

In the liftable titration frame, the gear 12 is a helical gear, and the rack 9 is a helical rack.

In the liftable titration frame, the support rod 2 is fixed at the center of the titration table 1.

In the liftable titration frame, the butterfly clamp 8 is fixed at the upper half part of the outer side of the U-shaped sliding part 7, and the left end and the right end of the butterfly clamp 8 extend out of the left side plate 4 and the right side plate 5.

In the liftable titration frame, the rear side plate 3, the left side plate 4 and the right side plate 5 are of an integrally formed structure.

In the liftable titration frame, the guide bar 6 is provided with a sliding groove, the two sides of the U-shaped sliding piece 7 are provided with bar-shaped bulges corresponding to the sliding groove, and the bar-shaped bulges are embedded in the sliding groove and slide up and down along the sliding groove.

In the liftable titration frame, a gap is formed between the sliding groove and the strip-shaped bulge, and damping oil is additionally arranged.

According to the liftable burette stand, before and after experiments, when the height of a vertical burette clamped on a butterfly clamp needs to be adjusted, a knob is finely adjusted, the knob rotates to drive a helical gear on a rotating shaft to rotate in the same direction, the helical gear drives strip-shaped protrusions on two sides of a U-shaped sliding piece to slide in a sliding groove of a guide strip in a lifting mode through a meshed helical rack, so that a butterfly clamp on the U-shaped sliding piece is driven to adjust up and down, the knob stops rotating until the burette on the butterfly clamp moves to a proper position where the liquid level is flush with the sight line, and reading is carried out. The titration experiment is carried out, so that the working efficiency of experimenters is greatly improved, and the optimal experiment effect is achieved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a liftable titration frame, its characterized in that is including titrating the platform, vertical bracing piece of establishing titrating bench, be equipped with the adjusting device of over-and-under type on the bracing piece, the last posterior lateral plate that is fixed with of adjusting device, be equipped with vertically left side board and right side board with it on the posterior lateral plate, left side board and right side inboard front portion are equipped with the gib block of vertical direction respectively, two sliding fit has U type slider between the gib block, the U type slider outside is fixed with the butterfly clamp, U type slider inboard is fixed with the rack parallel with the bracing piece, be equipped with the pivot between left side board and the right side board, the pivot rotates with left side board and right side board respectively and is connected, the one end of pivot stretches out in left side board and fixed mounting has the rotatory knob of drive pivot, be fixed with in the pivot with rack toothing's gear.

2. The liftable titration frame of claim 1, wherein: the adjusting device comprises a sliding hoop, the sliding hoop is sleeved on the supporting rod, a limiting bolt is arranged on the sliding hoop, and the sliding hoop is controlled to move and be fixed on the supporting rod by adjusting the tightness of the limiting bolt.

3. The liftable titration frame of claim 1, wherein: the gear is a helical gear, and the rack is a helical rack.

4. The liftable titration frame of claim 1, wherein: the support rod is fixed at the center of the titration table.

5. The liftable titration frame of claim 1, wherein: the butterfly clamp is fixed on the upper half part of the outer side of the U-shaped sliding part, and the left end and the right end of the butterfly clamp extend out of the left side plate and the right side plate.

6. The liftable titration frame of claim 1, wherein: the rear side plate, the left side plate and the right side plate are of an integrally formed structure.

7. The liftable titration frame of claim 1, wherein: the guide strip is provided with a sliding groove, the two sides of the U-shaped sliding part are provided with strip-shaped bulges corresponding to the sliding groove, and the strip-shaped bulges are embedded in the sliding groove and slide up and down along the sliding groove.

8. The liftable titration frame according to claim 7, wherein: and a gap is formed between the sliding groove and the strip-shaped protrusion, and damping oil is additionally arranged.