CN213749779U - Titration apparatus with easy operation and automatic liquid adding and zero setting - Google Patents

Abstract

The utility model provides an automatic liquid feeding zeroing's of easy operation titration outfit, include: a vertical rod (13) on the magnetic stirrer (11) is connected with a cross rod (12) to fix the burette (6) and the conduit (4); one end of a guide pipe (4) of the liquid adding device is arranged at the zero scale mark (5) of the burette (6), and the other end is arranged in the squeezable container (2). The utility model discloses combine magnetic stirrers (11) and automatic liquid feeding zero-setting device, put erlenmeyer flask (14) on magnetic stirrers (11) during the use, liquid spill when avoiding manual shaking guarantees that the oscillation is even and the result is accurate, makes the experimenter alleviate fatigue. The standard solution (1) enters a burette (6) from the squeezable container (2), the liquid level in the burette exceeds a zero scale mark (5), and the solution flows back. The utility model discloses guarantee that the result is accurate, replenish standard solution (1) and autozero fast simultaneously, save operating personnel's physical power, have the significance to titration experiment.

Description

Titration apparatus with easy operation and automatic liquid adding and zero setting

Technical Field

The utility model relates to an experimental apparatus especially relates to an easy titration outfit of operation automatic liquid feeding zero setting.

Background

Titration is commonly used in chemical experimental procedures, but there are some problems in current practice: in the experimental process, an operator is required to control the piston of the burette by one hand and shake the conical flask by the other hand, and each time a sample is titrated, the operator is required to supplement the solution into the burette and zero. In the operation process, the solution splashes to the outside due to the oscillation of the conical flask, so that the experimental result is influenced, and the conical flask needs to be continuously shaken by an operator, so that the physical consumption is large, and the efficiency is low; when the solution is supplemented into the burette, the standard solution flows out of the burette, which causes the waste of the standard solution.

Disclosure of Invention

In order to solve the problem that exists among the prior art, the utility model discloses to above problem, provide an easy automatic liquid feeding zeroing's of operation titration outfit, include: magnetic stirrer, burette, conduit, squeezable container with standard solution. A vertical rod is arranged on the top surface of the left magnetic stirrer, a fixed cross rod is arranged on the vertical rod, and a burette and a glass conduit are fixed at the same time; one end of a conduit of the right liquid adding device is arranged at the zero scale line of the burette, and the other end of the conduit enters the squeezable container through the bottle stopper with the hole.

Preferably, the squeezable container is a plastic container.

Preferably, the squeezable container contains a standard solution.

Preferably, one end of the conduit passes through a perforated stopper into a squeezable container containing a standard solution.

Preferably, the bottle stopper is made of rubber, and the diameter of the bottle stopper hole is 0.5 cm.

Preferably, the catheter is a glass catheter with an outer diameter of 0.5 cm.

Preferably, the guide pipe passes through the hole c on the fixed cross rod and is fixed by a rubber pad, and the other end of the guide pipe extends to the position of the zero graduation line of the burette.

Preferably, the inner diameter of the hole c is 0.7 cm.

Preferably, the outer diameter of the fixed cross bar is 1.9 cm.

As a preferred scheme, the model of the magnetic stirrer is JB-2A, and the top surface of the magnetic stirrer is provided with a stainless steel vertical rod.

Preferably, the outer diameter of the stainless steel vertical rod is 0.9 cm.

Preferably, the stainless steel vertical rod penetrates through the hole a in the fixed cross rod and is screwed tightly.

Preferably, the inner diameter of the hole a is 1.1 cm.

Preferably, the fixed cross bar is made of stainless steel.

As a preferable scheme, a conical flask is arranged on the magnetic stirrer and is filled with the reaction liquid.

As a preferable scheme, a magnetic stirrer is placed in the conical flask and used for stirring the reaction liquid.

As a preferable scheme, a burette is fixed above the conical bottle.

Preferably, the burette is provided with a piston to control the titration speed.

Preferably, the burette has an outer diameter of 1.6 cm.

Preferably, the burette passes through the hole b on the fixed cross bar and is fixed by a rubber pad.

Preferably, the inner diameter of the hole b is 1.7 cm.

Preferably, the distance from the hole a to the hole b is 7cm, and the distance from the hole b to the hole c is 30 cm.

The utility model discloses combine magnetic stirrers and titration outfit to add automatic liquid feeding zero-setting device, put the erlenmeyer flask on magnetic stirrers during the use, guarantee during the titration that the oscillation is even, can avoid manual shaking, prevent the liquid spill, guarantee the accuracy of testing result, also can make the experimenter alleviate fatigue. Meanwhile, the standard solution enters the burette through the squeezable container, and when the liquid level in the burette exceeds a zero graduation line, the redundant standard solution flows back into the squeezable container. The utility model discloses simple structure, easily operation, it is with low costs, when guaranteeing that the testing result is accurate, can also replenish standard solution fast and autozero, have important meaning to titrating the experiment.

Drawings

Fig. 1 is the overall structure schematic diagram of the titration apparatus of the utility model, which is easy to operate and can automatically add liquid and zero.

Reference numerals: 1-standard solution; 2-a squeezable container; 3-bottle stopper with hole; 4-a catheter; 5-zero scale mark; 6-burette; 7-a piston; 8-magnetic stirring bar; 9-speed regulating button of magnetic stirrer; 10-magnetic stirrer switch; 11-a magnetic stirrer; 12-a fixed cross bar; 13-a vertical rod; 14-a conical flask; 15-well a; 16-well b; 17-hole c.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the utility model provides an easy-to-operate titration outfit with automatic liquid feeding and zero setting, the device comprises: a magnetic stirrer 11, a vertical rod 13, a fixed cross-bar 12, a burette 6 and a squeezable container 2. Wherein a conical flask 14 is arranged on the magnetic stirrer 11; the vertical rod 13 is arranged on the magnetic stirrer 11; the fixed cross bar 12 is fixed on the vertical bar 13; the burette 6 is fixed above the conical flask 14 by a fixed cross bar 12; the squeezable container 2 is filled with a standard solution 1; one end of the conduit 4 is inserted into the bottom of the squeezable container 2 through the bottle stopper 3 with a hole; the other end of the conduit 4 is arranged at the zero scale mark 5 of the burette 6; the conduit 4 is held by a fixed crossbar 12.

The utility model discloses combine magnetic stirrers and titration outfit to add automatic liquid feeding zero-setting device, extrude during the use container 2 that extrudees, flow standard solution 1 through pipe 4 fast to buret 6 in, when the liquid level surpassed buret 6 zero scale mark 5, loosen container 2 that extrudees, lean on the suction of container 2 that extrudees, unnecessary standard solution 1 can flow back in can extrude the container 2, thereby reach the process of automatic supplementary standard solution 1 and automatic zero-setting. When the burette 6 begins to drip, the standard solution 1 is dripped into the conical flask 14 by controlling the piston 7, and simultaneously the magnetic stirrer switch 10 and the magnetic stirrer speed regulating button 9 are turned on, so that the magnetic stirrer 8 starts to rotate, the solution is fully reacted, and when the solution reaches the expected color, the piston 7 is turned off. With the combination of magnetic stirrers, reaction oscillation is even when can making titrating, avoids manual shaking, prevents liquid spill, guarantees the accuracy of testing result, also can make the experimenter alleviate fatigue, can extrude the container simultaneously and directly to buret intraductal liquid feeding, has reduced the time of experimental operation.

The utility model discloses a fixed horizontal pole 12 is stainless steel material, bores three holes respectively on fixed horizontal pole 12, and the internal diameter is 1.1cm (hole a 15), 1.7cm (hole b 16) and 0.7cm (hole c 17) respectively, and montant 13, burette 6 and pipe 4 pass hole a15, hole b16 and hole c17 respectively, and are fixed with the rubber pad.

The inner diameter of the hole b16 of the utility model is set to 1.7cm, and the thickness of the rubber pad can be adjusted according to the outer diameter of the burette.

The utility model discloses a fixed horizontal pole 12 passes through the screw fixation on montant 13, uses the back, and convenient the dismantlement.

The utility model discloses a fixed horizontal pole 12 can be adjusted from top to bottom, satisfies different experimental demands.

The utility model discloses a foraminiferous bottle plug can set up a plurality of holes, can carry out a plurality of titration experiments simultaneously.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. The utility model provides an easy automatic liquid feeding zeroing's titration outfit which characterized in that includes: can extrude container (2), foraminiferous bottle plug (3), pipe (4), buret (6), zero scale mark (5), magnetic stirrers (11), montant (13), fixed horizontal pole (12), hole a (15), hole b (16), hole c (17), erlenmeyer flask (14), magnetic stirrers (8), zero scale mark (5) department at buret (6) is established to the one end of pipe (4), the other end of pipe (4) inserts through foraminiferous bottle plug (3) can extrude in the container, magnetic stirrers (11) top is equipped with montant (13), install fixed horizontal pole (12) on montant (13), buret (6) and pipe (4) can be fixed to fixed horizontal pole (12), buret (6) are fixed in erlenmeyer flask (14) top, magnetic stirrers (8) have been put in erlenmeyer flask (14).

2. An easy-to-operate titration device with automatic filling and zeroing according to claim 1, wherein one end of the conduit (4) is inserted into the bottom of the squeezable container (2) through a perforated stopper (3).

3. An easy-to-operate titration device with automatic filling and zeroing according to claim 1, wherein the squeezable container (2) is a plastic container.

4. The titrating device with easy operation and automatic liquid adding and zero setting as claimed in claim 1, wherein the model of the magnetic stirrer (11) is JB-2A.

5. An easy-to-operate titration device with automatic filling and zeroing according to claim 1, wherein the vertical rods (13) are provided with fixed cross rods (12).

6. An easy-to-operate titration device with automatic filling and zeroing according to claim 1, wherein the fixed cross-bar (12) has holes a (15), b (16) and c (17).

7. An easy-to-operate titration device with automatic filling and zeroing according to claim 1, wherein the fixed cross bar (12) has an outer diameter of 1.9 cm.

8. An easy-to-handle auto-priming titration device according to any one of claims 1 and 6, wherein the inner diameter of said well a (15) is 1.1cm, the inner diameter of said well b (16) is 1.6cm and the inner diameter of said well c (17) is 0.7 cm.

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