Novel acid-base titration device

Abstract

The utility model discloses a novel acid-base titration device, which comprises a working table and a titration table placed on the working table, the working table is provided with a storage box and a liquid supplementing unit, the liquid supplementing unit comprises a base, a support rod, a suspension frame and a sliding rod, the base is fixedly connected with the working table, the support rod is vertically and fixedly connected with the base, and the suspension frame is fixedly connected with the sliding rod. The suspension is located at the top of the supporting rod and is adjustably and fixedly connected with the supporting rod in the vertical direction and the circumferential direction, the sliding rod is in axial limiting sliding connection with the sliding rod, a titrating solution storage bottle is hung at the end, facing outwards, of the sliding rod, and a bottle opening of the titrating solution storage bottle faces downwards and is fixedly provided with a liquid outlet valve. The burette disclosed by the utility model has the advantages that the situation that the burette is easy to break and damage due to manual liquid supplementation when the burette is taken in the prior art is avoided, meanwhile, the phenomenon that the titration liquid flows out due to manual instability is also avoided, and the detection efficiency is improved due to the fact that frequent taking of the burette is reduced and manual liquid supplementation is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical analysis, in particular to a novel acid-base titration device. Background Art

[0002] Acid-base titration is one of the most commonly used titration methods in chemical analysis. It is a method of volumetric analysis based on proton transfer reactions between acids and bases in water, and can be used to determine acids, bases, and amphoteric substances. It is generally applicable to the quality analysis of food, drugs, and chemical products. Acid-base titration requires the use of an acid-base titration device for chemical analysis. However, the existing titration devices have the following defects: 1) frequent operations of taking and moving the acid-base burette are required, which not only affects the detection efficiency but also increases the probability of the burette being dropped or damaged, reducing its service life; 2) the time for replenishing the titrant is long, which affects the detection efficiency, and when manually replenishing the titrant, it is easy for the titrant to flow out, resulting in contamination of the workbench and waste of the titrant; 3) there is no storage function, and the water bottle, indicator, dropper, etc. required for titration have nowhere to be placed. After titration, they are scattered on the workbench, which is not conducive to the storage and arrangement of the laboratory. Content of the Utility Model

[0003] The purpose of the utility model is to provide a novel acid-base titration device to solve at least one of the technical problems proposed in the background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A novel acid-base titration device includes a workbench and a titration table placed on the workbench. A storage box and a liquid replenishing unit are arranged on the workbench. The liquid replenishing unit includes a base, a support rod, a suspension and a sliding rod. The base is fixedly connected to the workbench. The support rod is vertically and fixedly connected to the base. The suspension is located at the top of the support rod and is fixedly connected to the support rod in an adjustable manner in the vertical and circumferential directions. The sliding rod is axially and limit-slidingly connected to the sliding rod. A titrant storage bottle is hung at the outer end of the sliding rod. The mouth of the titrant storage bottle faces downward, and an outlet valve is fixedly arranged at the mouth of the titrant storage bottle.

[0006] Further, the suspension includes a square steel pipe. One end of the square steel pipe is fixedly connected with a sliding sleeve. The sliding sleeve is provided with a first screw hole. The sliding sleeve is sleeved on the support rod and is fixedly connected to the support rod by screwing a threaded knob into the first screw hole to press against the support rod.

[0007] Further, the sliding rod includes a straight bar. A plurality of rollers are symmetrically and fixedly arranged on both sides of the straight bar. The diameter of the rollers matches the inner diameter of the square steel pipe and is slightly larger than the height of the straight bar. The sliding rod is sleeved in the square steel pipe and is slidably connected to the square steel pipe through the rollers.

[0008] Furthermore, a straight groove is provided at the bottom of the square steel tube, and a second screw hole is provided at the bottom of the straight bar. After the sliding rod is sleeved in the square steel tube, a locking screw is installed in the second screw hole. The head of the locking screw is located in the straight groove and limits the axial movement distance of the sliding rod through the two ends of the straight groove.

[0009] Furthermore, a hook is fixedly connected to one outward end of the straight bar.

[0010] Furthermore, the storage box is placed at the upper left corner of the workbench, and the liquid replenishing unit is arranged at the upper right corner of the workbench.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1) The utility model is provided with a liquid replenishing unit, which is provided with a supporting rod, a suspension and a sliding rod. The suspension is adjustably fixedly connected to the supporting rod, the sliding rod is slidingly connected to the suspension, and a titrant storage bottle is hung on the top of the sliding rod. The position of the titrant storage bottle is adjusted by adjusting the position of the suspension and the sliding rod, so that the titrant storage bottle is located directly above the burette, which is convenient for direct liquid replenishment through the liquid outlet valve, thereby avoiding the situation in the prior art that the burette is easily broken or damaged due to manual liquid replenishment caused by taking out the burette, and at the same time, it also avoids the phenomenon of outflow of titrant due to manual instability. Moreover, since the frequent taking out of the burette is reduced and manual liquid replenishment is not required, the detection efficiency is improved, which is particularly suitable for detecting a large number of samples and significantly saves detection time.

[0013] 2) The utility model is provided with a storage box, which can store objects such as water bottles, indicators and droppers used in the titration process after the detection is completed, so that the workbench surface can be kept clean and tidy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of the fluid infusion unit;

[0016] Figure 3 This is a schematic diagram of the structure with the back of the liquid replenishment unit facing upward;

[0017] Figure 4 Schematic diagram of the sliding bar structure;

[0018] In the figure: 1 - workbench, 2 - titration table, 201 - bottom plate, 202 - column, 203 - burette clamp, 3 - burette, 4 - beaker, 5 - storage box, 6 - liquid replenishing unit, 601 - base, 602 - support rod, 603 - suspension, 604 - sliding sleeve, 605 - first screw hole, 606 - square steel pipe, 607 - straight groove, 608 - set screw, 609 - sliding rod, 610 - straight bar, 611 - roller, 612 - second screw hole, 613 - hook, 7 - titrant storage bottle, 8 - liquid outlet valve. Detailed implementation manners

[0019] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Please refer to Figures 1 - 4 , an embodiment provided by the present utility model:

[0021] A novel acid-base titration device comprises a workbench 1 and a titration platform 2 placed on the workbench 1, wherein the titration platform 2 comprises a bottom plate 201 and a column 202, wherein the column 202 is perpendicular to the bottom plate 201 and fixedly connected to the bottom plate 201, and a burette clamp 203 is arranged on the top of the column 202, wherein the burette clamp 203 is a butterfly clamp, and the direction and height of the burette clamp 203 can be adjusted by loosening the knob on the burette clamp 203, and the burette clamp 203 can be fixed on the column 202 by tightening the knob on the burette clamp 203 The burette clamp 203 is provided with a burette 3, a beaker 4 is placed under the burette 3 on the workbench 1, a storage box 5 and a liquid replenishment unit 6 are provided on the workbench 1, the storage box 5 is used to store objects such as water bottles, indicators and droppers used in the titration process after the detection is completed, so that the table of the workbench 1 remains clean and tidy, the liquid replenishment unit 6 includes a base 601, a support rod 602, a suspension 603 and a slide bar 609, the base 601 is fixedly connected to the workbench 1 by bolts to prevent the liquid replenishment unit 6 from tipping over and damaging objects, and the support rod The support rod 602 is vertically fixedly connected to the base 601 by bolts, the suspension 603 is located at the top of the support rod 602 and is adjustable and fixedly connected to the support rod 602 in the vertical direction and the circumferential direction, the slide bar 609 is axially limited and slidably connected to the slide bar 609, so that the titration liquid storage bottle 7 can adjust the spatial position, and the slide bar 609 is hung with a titration liquid storage bottle 7 at the outward end, the bottle mouth of the titration liquid storage bottle 7 is downward and a liquid outlet valve 8 is fixedly arranged at the bottle mouth. When replenishing the titration liquid, a funnel is placed above the burette 3, and the suspension 603 and the slide bar 609 are adjusted. 09 is positioned so that the titrant storage bottle 7 is located just above the funnel, and the liquid outlet valve 8 can be opened to allow the titrant in the titrant storage bottle 7 to flow into the burette 3 and the beaker 4, thereby avoiding the situation in the prior art where the burette is easily broken or damaged due to manual refilling of the burette, and also avoiding the phenomenon of the titrant outflowing due to manual instability. In addition, since the frequent removal of the burette is reduced and manual refilling is not required, the detection efficiency is improved, which is particularly suitable for detecting a large number of samples and significantly saves detection time.

[0022] Among them, the suspension 603 includes a square steel tube 606, one end of which is welded with a sliding sleeve 604, and the sliding sleeve 604 is provided with a first screw hole 605. The sliding sleeve 604 is sleeved on the support rod 602 and is screwed into the first screw hole 605 through a threaded knob to support the support rod 602 and is fixedly connected to the support rod 602. When the position of the storage bottle 7 needs to be adjusted, the height and circumferential angle of the suspension 603 can be adjusted at will to achieve the purpose of adjusting the position of the storage bottle 7 by loosening the threaded knob.

[0023] Among them, the sliding rod 609 includes a straight bar 610. A number of rollers 611 are symmetrically installed on both sides of the straight bar 610. The diameter of the roller 611 matches the inner diameter of the square steel pipe 606 and is slightly larger than the height of the straight bar 610. The sliding rod 609 is sleeved in the square steel pipe 606 and is slidably connected to the square steel pipe 606 through the rollers 611, enabling the straight bar 610 to smoothly move within the square steel pipe 606, so as to further adjust the position of the storage bottle 7.

[0024] Among them, a straight groove 607 is opened at the bottom of the square steel pipe 606, and a second screw hole 612 is opened at the bottom of the straight bar 610. After the sliding rod 609 is sleeved in the square steel pipe 606, a set screw 608 is installed in the second screw hole 612. The head of the set screw 608 is located in the straight groove 607 and restricts the axial movement distance of the sliding rod 609 through both ends of the straight groove 607, preventing the sliding rod 609 from sliding out of the square steel pipe 606. The telescopic distance of the sliding rod 609 within the square steel pipe 606 is equal to the length of the straight groove 607, and the telescopic range of the sliding rod 609 can be adjusted by adjusting the length of the straight groove 607.

[0025] Among them, a hook 613 is fixedly connected to the outer end of the straight bar 610. The titrant storage bottle 7 is self-equipped with a hanging rope or the titrant storage bottle 7 is placed in a mesh bag with a hanging rope, and the titrant storage bottle 7 is hung in the air upside down by hanging the hanging rope on the hook 613.

[0026] Among them, the storage box 5 is placed in the upper left corner of the workbench 1, and the liquid replenishing unit 6 is arranged in the upper right corner of the workbench 1, which is convenient for titration operation.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of acid-base titration device, comprising a workbench (1) and a titration table (2) placed on the workbench (1), characterized in that: A storage box (5) and a liquid replenishing unit (6) are arranged on a workbench (1). The liquid replenishing unit (6) includes a base (601), a support rod (602), a suspension (603) and a slide rod (609). The base (601) is fixedly connected to the workbench (1). The support rod (602) is vertically and fixedly connected to the base (601). The suspension (603) is located at the top of the support rod (602) and is adjustably and fixedly connected to the support rod (602) in the vertical direction and the circumferential direction. The slide rod (609) is axially limited and slidably connected to the slide rod (609). A titrant storage bottle (7) is hung at the outer end of the slide rod (609). The mouth of the titrant storage bottle (7) faces downward and an outlet valve (8) is fixedly arranged at the mouth of the bottle.

2. The novel acid-base titration device according to claim 1, wherein: The suspension (603) includes a square steel pipe (606). One end of the square steel pipe (606) is fixedly connected with a sliding sleeve (604). The sliding sleeve (604) is provided with a first screw hole (605). The sliding sleeve (604) is sleeved on the support rod (602) and is fixedly connected to the support rod (602) by screwing a threaded knob into the first screw hole (605) to press against the support rod (602).

3. The novel acid-base titration device according to claim 2, characterized in that: The slide rod (609) includes a straight bar (610). A plurality of rollers (611) are symmetrically and fixedly arranged on both sides of the straight bar (610). The diameter of the rollers (611) matches the inner diameter of the square steel pipe (606) and is slightly larger than the height of the straight bar (610). The slide rod (609) is sleeved in the square steel pipe (606) and is slidably connected to the square steel pipe (606) through the rollers (611).

4. The novel acid-base titration device according to claim 3, characterized in that: A straight groove (607) is opened at the bottom of the square steel pipe (606). A second screw hole (612) is opened at the bottom of the straight bar (610). After the slide rod (609) is sleeved in the square steel pipe (606), a set screw (608) is installed in the second screw hole (612). The head of the set screw (608) is located in the straight groove (607) and the axial movement distance of the slide rod (609) is limited by both ends of the straight groove (607).

5. A novel acid-base titration device according to claim 3, characterized in that: A hook (613) is fixedly connected to the outer end of the straight bar (610).

6. A novel acid-base titration device according to claim 1, characterized in that: The storage box (5) is placed in the upper left corner of the workbench (1), and the liquid replenishing unit (6) is arranged in the upper right corner of the workbench (1).

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