CN220835663U

CN220835663U - Laboratory burette stand

Info

Publication number: CN220835663U
Application number: CN202322622040.7U
Authority: CN
Inventors: 李辉
Original assignee: Anhui Day Bright Laboratory Equipment Co ltd
Current assignee: Anhui Day Bright Laboratory Equipment Co ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-04-26
Anticipated expiration: 2033-09-26

Abstract

The utility model discloses a laboratory burette stand, which comprises a bottom plate and a vertical rod arranged on the bottom plate, wherein a sliding sleeve is sleeved on the vertical rod in a sliding way, two ends of the sliding sleeve are fixedly connected with transverse connecting strips, the surface of the vertical rod is provided with arc clamping grooves at equal distances vertically, the rear end of the sliding sleeve is fixedly connected with a column shell, the inner wall of the column shell is fixedly connected with a second spring, one end of the second spring is fixedly connected with a steel ball, and the steel ball is clamped in the arc clamping grooves when the sliding sleeve is locked. According to the utility model, when the heights of the sliding sleeve and the connecting strip in the vertical direction are adjusted, the sliding sleeve is only required to be pushed in the vertical direction, and when the steel ball moves to the position corresponding to the arc-shaped clamping groove, the first spring releases elasticity at the moment to push the steel ball to be clamped into the arc-shaped clamping groove, so that the position locking of the sliding sleeve is realized; when the adjustment is needed again, the sliding sleeve is pushed, so that the steel ball is extruded from the arc-shaped clamping groove until the arc-shaped clamping groove moving to the next installation position stops.

Description

Laboratory burette stand

Technical Field

The utility model relates to the technical field of experimental apparatus equipment, in particular to a laboratory burette stand.

Background

In the laboratory, a burette is the primary gauge used in titration analysis. The titrimetry is a method of adding a standard solution of known accurate concentration dropwise to a solution to be measured (or adding a solution to be measured dropwise to a standard solution) until the added standard solution and the solution to be measured react quantitatively in a stoichiometric relation, measuring the consumed volume of the standard solution, and calculating the content of a substance to be measured from the concentration of the standard solution and the consumed volume.

The existing burette stand generally comprises an iron stand table and a butterfly clamp, wherein two sides of the butterfly clamp can be used for clamping (fixing) the upright burette, when the height of the butterfly clamp is adjusted, bolts on the butterfly clamp are generally used for operation, the bolts are required to be unscrewed every time, the operation burden is increased, and improvement is required.

Disclosure of utility model

(One) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a laboratory burette stand, which solves the problems in the background art.

(II) technical scheme

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a laboratory buret, includes the bottom plate, sets up the montant on the bottom plate, the sliding sleeve has been cup jointed to the last slip of montant, the equal fixedly connected with horizontal connecting strip in sliding sleeve both ends, the arc draw-in groove of vertical equidistance has been seted up on the montant surface, sliding sleeve rear end fixedly connected with column casing, column casing inner wall fixedly connected with second spring, second spring one end fixedly connected with steel ball, to the sliding sleeve lock time, the steel ball joint in the arc draw-in groove.

Preferably, the connecting strip tip fixedly connected with two second grip posts, second grip post one side is equipped with two first grip posts, two fixedly connected with connecting rod between the first grip posts, connecting rod rear end fixedly connected with stopper, the stopper slides and sets up in seting up in the spacing mouth on connecting strip surface, fixedly connected with first spring between stopper and the spacing mouth inner wall.

Preferably, a sliding opening is formed in the bottom plate, a sliding block is fixedly connected to the bottom of the vertical rod, the lower end of the sliding block is slidably arranged in the sliding opening, a bolt is arranged on the thread of the bottom of the sliding block, and when the position of the vertical rod is fixed, the bolt is in abutting contact with the bottom wall of the bottom plate.

Preferably, the sliding port is of a cross-shaped structure.

Preferably, the sliding block structure is matched with the sliding port, and the top-down cross-sectional area of the bottom end of the vertical rod is larger than that of the sliding block.

(III) beneficial effects

The utility model provides a laboratory burette stand, which has the following beneficial effects:

1. According to the utility model, when the heights of the sliding sleeve and the connecting strip in the vertical direction are adjusted, the sliding sleeve is only required to be pushed in the vertical direction, and when the steel ball moves to the position corresponding to the arc-shaped clamping groove, the first spring releases elasticity at the moment to push the steel ball to be clamped into the arc-shaped clamping groove, so that the position locking of the sliding sleeve is realized; when the adjustment is needed again, the sliding sleeve is pushed, so that the steel ball is extruded from the arc-shaped clamping groove until the arc-shaped clamping groove moving to the next installation position stops.

2. According to the utility model, the relative position of the vertical rod on the bottom plate can be adjusted by adopting the cross sliding port, the sliding block and the bolt, so that the position of the burette can be adjusted, the conical flask can be conveniently matched, and the titration operation can be realized.

Drawings

FIG. 1 is a front perspective view of a laboratory burette stand according to the present utility model;

FIG. 2 is an enlarged block diagram of the portion A of FIG. 1;

FIG. 3 is a cross-sectional perspective view of a laboratory burette stand according to the present utility model;

FIG. 4 is an enlarged block diagram of the portion B of FIG. 3;

FIG. 5 is an enlarged block diagram of FIG. 3 at C;

fig. 6 is a bottom perspective view of a laboratory burette stand according to the present utility model.

In the figure: 1. a bottom plate; 101. a sliding port; 2. a vertical rod; 201. an arc-shaped clamping groove; 3. a sliding sleeve; 4. a connecting strip; 401. a limit opening; 5. a first spring; 6. a limiting block; 7. a connecting rod; 8. a first clamping post; 9. a second clamping post; 10. a column shell; 11. a second spring; 12. a steel ball; 13. a slide block; 14. and (5) a bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 6, the present utility model provides a technical solution: the utility model provides a laboratory buret, including bottom plate 1, set up montant 2 on bottom plate 1, sliding sleeve 3 has been cup jointed in the slip on the montant 2, and the equal fixedly connected with horizontal connecting strip 4 in sliding sleeve 3 both ends, the arc draw-in groove 201 of vertical equidistance has been seted up on montant 2 surface, and 3 rear end fixedly connected with column casing 10 of sliding sleeve, the 11 fixedly connected with second spring 11 of column casing 10 inner wall, the 11 one end fixedly connected with steel ball 12 of second spring, when locking sliding sleeve 3, steel ball 12 joint in arc draw-in groove 201.

When the heights of the sliding sleeve 3 and the connecting strip 4 in the vertical direction are adjusted, the sliding sleeve 3 is only required to be pushed in the vertical direction, and when the steel ball 12 moves to the position corresponding to the arc-shaped clamping groove 201, the first spring 5 releases elasticity at the moment to push the steel ball 12 to be clamped into the arc-shaped clamping groove 201, so that the position locking of the sliding sleeve 3 is realized; when the adjustment is needed again, the sliding sleeve 3 is pushed so that the steel ball 12 is extruded from the arc-shaped clamping groove 201 until the arc-shaped clamping groove 201 moving to the next installation position stops.

The connecting strip 4 tip fixedly connected with two second centre gripping posts 9, second centre gripping post 9 one side is equipped with two first centre gripping posts 8, fixedly connected with connecting rod 7 between two first centre gripping posts 8, and connecting rod 7 rear end fixedly connected with stopper 6, stopper 6 slip set up in seting up in the spacing mouth 401 on connecting strip 4 surface, fixedly connected with first spring 5 between stopper 6 and the spacing mouth 401 inner wall.

When the burette is installed, the connecting rod 7 is pulled, then the burette is arranged close to one side of the second clamping column 9, then the connecting rod 7 is loosened, at the moment, the first spring 5 releases elasticity to push the limiting block 6 to move, the limiting block 6 drives the connecting rod 7 to move, the first clamping columns 8 at two ends of the connecting rod 7 are propped against the burette, and at the moment, the first clamping columns 8 and the second clamping columns 9 realize clamping work on the burette.

The bottom plate 1 is provided with a sliding opening 101, the bottom of the vertical rod 2 is fixedly connected with a sliding block 13, the lower end of the sliding block 13 is arranged in the sliding opening 101 in a sliding manner, bolts 14 are arranged at the bottom threads of the sliding block 13, when the position of the vertical rod 2 is fixed, the bolts 14 are in abutting contact with the bottom wall of the bottom plate 1, the sliding opening 101 is of a cross-shaped structure, the sliding block 13 is matched with the sliding opening 101, and the overlooking cross-sectional area of the bottom end of the vertical rod 2 is larger than that of the sliding block 13.

Sliding the sliding block 13 in the sliding port 101, rotating the bolt 14 after moving to a proper position, screwing the bolt 14 into the sliding block 13, and then enabling the bolt 14 to prop against the bottom plate 1; the relative position of the vertical rod 2 on the bottom plate 1 can be adjusted at the moment, the position of the burette is adjusted, the conical flask is arranged on the bottom plate 1, and the conical flask is matched with the conical flask conveniently, so that titration is realized.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A laboratory burette stand, characterized in that: including bottom plate (1), montant (2) of setting on bottom plate (1), sliding sleeve (3) have been cup jointed on montant (2), horizontal connecting strip (4) of equal fixedly connected with in sliding sleeve (3) both ends, arc draw-in groove (201) of vertical equidistance have been seted up on montant (2) surface, sliding sleeve (3) rear end fixedly connected with column casing (10), column casing (10) inner wall fixedly connected with second spring (11), second spring (11) one end fixedly connected with steel ball (12), when locking sliding sleeve (3), steel ball (12) joint in arc draw-in groove (201).

2. A laboratory burette stand as claimed in claim 1, wherein: connecting strip (4) tip fixedly connected with two second grip posts (9), second grip post (9) one side is equipped with two first grip posts (8), two fixedly connected with connecting rod (7) between first grip posts (8), connecting rod (7) rear end fixedly connected with stopper (6), stopper (6) slip set up in seting up in spacing mouth (401) on connecting strip (4) surface, fixedly connected with first spring (5) between stopper (6) and spacing mouth (401) inner wall.

3. A laboratory burette stand as claimed in claim 1, wherein: the sliding opening (101) is formed in the bottom plate (1), the sliding block (13) is fixedly connected to the bottom of the vertical rod (2), the lower end of the sliding block (13) is slidably arranged in the sliding opening (101), the screw thread at the bottom of the sliding block (13) is provided with the bolt (14), and when the position of the vertical rod (2) is fixed, the bolt (14) is in abutting contact with the bottom wall of the bottom plate (1).

4. A laboratory burette stand as claimed in claim 3, wherein: the sliding port (101) is of a cross-shaped structure.

5. A laboratory burette stand as claimed in claim 3, wherein: the sliding block (13) is matched with the sliding port (101) in structure, and the overlooking cross section area of the bottom end of the vertical rod (2) is larger than that of the sliding block (13).