CN220340145U - Automatic potentiometric titrator - Google Patents

Abstract

The utility model discloses an automatic potentiometric titrator, which comprises an automatic potentiometric titrator base, wherein an electrode frame and a burette are arranged on the automatic potentiometric titrator base, a valve is arranged beside the burette, a connecting pipe is arranged between the valve and the burette, a transfusion pipe is connected between the valve and the electrode frame, a supporting rod is arranged on the automatic potentiometric titrator base, a movable sleeve is connected to the supporting rod, a positioning block is connected to the lower end of the movable sleeve, limit plates are connected to one side of the connecting rod and the upper end of the supporting rod, and the transfusion pipe and the connecting pipe respectively penetrate through the interiors of the 2 limit plates. The limiting plate is arranged, so that the connecting pipe and the infusion tube can penetrate through the limiting plate, the connecting pipe and the infusion tube are supported by the limiting plate, the connecting pipe and the infusion tube are prevented from vibrating during working, and the limiting plates with different heights can prevent the connecting pipe and the infusion tube from being intertwined.

Description

Automatic potentiometric titrator

Technical Field

The utility model relates to the technical field of chemical instruments, in particular to an automatic potentiometric titrator.

Background

The principle of the potential method is as follows: the proper indication electrode, reference electrode and measured solution are selected to form a working battery, and as the titrant is added, the concentration of the measured ions is changed continuously due to chemical reaction, so that the potential of the indication electrode is changed. In the vicinity of the titration end point, the concentration of the measured ion is mutated to cause a sudden jump in the electrode potential, and thus the titration end point can be determined from the sudden jump in the electrode potential. The existing device has the following defects:

the connecting pipe and the infusion tube on the existing automatic potentiometric titrator are easy to vibrate during working, and the phenomenon of intertwining during installation can occur.

Disclosure of Invention

The present utility model is directed to an automatic potentiometric titrator, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an automatic potentiometric titrator, includes the automatic potentiometric titrator base, be provided with electrode holder and buret on the automatic potentiometric titrator base, and the buret next door is provided with the valve, be provided with the connecting pipe between valve and the buret, and be connected with the transfer line between valve and the electrode holder, be provided with the bracing piece on the automatic potentiometric titrator base, and be connected with on the bracing piece and remove the sleeve, it is connected with the locating piece to remove telescopic lower extreme, and remove telescopic one side and be provided with the connecting rod, one side of connecting rod all is connected with the limiting plate with the upper end of bracing piece, 2 inside of limiting plate is run through respectively has transfer line and connecting pipe.

Preferably, the inner diameter of the moving sleeve is larger than the outer diameter of the supporting rod, and the outer diameter of the moving sleeve is smaller than the outer diameter of the positioning block.

Preferably, the middle part of the supporting rod is provided with external threads, the inside of the positioning block is provided with internal threads, and the internal threads of the positioning block are matched with the external threads on the supporting rod.

Preferably, the lower end of the supporting rod is provided with a T-shaped mounting block, the base of the automatic potentiometric titrator is provided with a fixing hole, and the external dimension of the fixing hole is identical with that of the mounting block.

Preferably, the limiting plate comprises a moving plate, a fixing groove, a fixing plate, a fixing block and a limiting hole, wherein the fixing block is arranged on the moving plate, the fixing groove is formed in the fixing plate, the fixing groove and the fixing block are mutually embedded, and the limiting hole with a through hole structure is formed in the middle of the moving plate and the fixing plate.

Preferably, the connecting rod is of a U-shaped structure.

Compared with the prior art, the utility model has the beneficial effects that:

the limiting plate is arranged, so that the connecting pipe and the infusion tube can penetrate through the limiting plate, the connecting pipe and the infusion tube are supported by the limiting plate, the connecting pipe and the infusion tube are prevented from vibrating during working, and the limiting plates with different heights can prevent the connecting pipe and the infusion tube from being intertwined.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a front view structure of the present utility model;

FIG. 2 is a schematic side view of a limiting plate according to the present utility model;

FIG. 3 is a schematic top view of the moving sleeve and connecting rod according to the present utility model;

fig. 4 is a schematic diagram of a limiting plate structure in the present utility model.

In the figure: 1. an automatic potentiometric titrator base; 2. an electrode holder; 3. moving the sleeve; 4. a support rod; 5. a limiting plate; 501. a moving plate; 502. a fixing groove; 503. a fixing plate; 504. a fixed block; 505. a limiting hole; 6. an infusion tube; 7. a connecting rod; 8. a connecting pipe; 9. a valve; 10. a burette; 11. a mounting block; 12. a positioning block; 13. and a fixing hole.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

as shown in fig. 1-4, as a preferred embodiment, on the basis of the above manner, the automatic potentiometric titrator further comprises an automatic potentiometric titrator base 1, an electrode frame 2 and a buret 10 are arranged on the automatic potentiometric titrator base 1, a valve 9 is arranged beside the buret 10, a connecting pipe 8 is arranged between the valve 9 and the buret 10, a transfusion pipe 6 is connected between the valve 9 and the electrode frame 2, a supporting rod 4 is arranged on the automatic potentiometric titrator base 1, a movable sleeve 3 is connected on the supporting rod 4, a positioning block 12 is connected at the lower end of the movable sleeve 3, a connecting rod 7 is arranged on one side of the movable sleeve 3, limiting plates 5 are respectively connected on one side of the connecting rod 7 and the upper end of the supporting rod 4, and the transfusion pipe 6 and the connecting pipe 8 are respectively penetrated in the inner parts of the 2 limiting plates 5.

Embodiment two:

a further description of one embodiment is provided below, in connection with the specific manner of operation, as described in detail below,

as shown in fig. 2, as a preferred embodiment, further, on the basis of the above mode, the inner diameter of the moving sleeve 3 is larger than the outer diameter of the supporting rod 4, the outer diameter of the moving sleeve 3 is smaller than the outer diameter of the positioning block 12, the moving sleeve 3 can move up and down along the direction of the supporting rod 4, so that the moving sleeve 3 can move to a proper position conveniently, the positioning block 12 can support the moving sleeve 3, and the position of the moving sleeve 3 can be fixed; the middle part of the support rod 4 is provided with external threads, the inside of the positioning block 12 is provided with internal threads, the internal threads of the positioning block 12 are matched with the external threads on the support rod 4, and the positioning block 12 is in threaded connection with the support rod 4, so that the positioning block 12 can be fixed in a region with external threads on the support rod 4, the position of the movable sleeve 3 can be changed by changing the position of the positioning block 12, and the position of the movable sleeve 3 can be conveniently adjusted according to requirements; the lower extreme of bracing piece 4 is provided with the installation piece 11 of "T" style of calligraphy structure, has seted up fixed orifices 13 on automatic potentiometric titrator base 1, and the overall dimension of fixed orifices 13 coincide with the overall dimension of installation piece 11, and installation piece 11 and fixed orifices 13 can mutually gomphosis, can fix bracing piece 4 on automatic potentiometric titrator base 1 through the gomphosis structure between installation piece 11 and the fixed orifices 13.

As shown in fig. 3, as a preferred embodiment, on the basis of the above mode, the connecting rod 7 has a "U" structure, so that when the connecting rod 7 connects the limiting plate 5 and the moving sleeve 3, the moving sleeve 3 and the limiting plate 5 are mutually perpendicular, and the connecting pipe 8 conveniently penetrates the limiting plate 5.

As shown in fig. 4, as a preferred embodiment, the limiting plate 5 further includes a moving plate 501, a fixing groove 502, a fixing plate 503, a fixing block 504 and a limiting hole 505, the moving plate 501 is provided with the fixing block 504, the fixing plate 503 is provided with the fixing groove 502, the fixing groove 502 and the fixing block 504 are mutually embedded, the middle of the moving plate 501 and the fixing plate 503 is provided with the limiting hole 505 with a through hole structure, the moving plate 501 can be mounted on the fixing plate 503 through the embedding structure between the fixing groove 502 and the fixing block 504, the infusion tube 6 or the connecting tube 8 can be clamped in the limiting hole 505 on the fixing plate 503, and then the moving plate 501 is mounted on the fixing plate 503 through the embedding structure, so that the infusion tube 6 or the connecting tube 8 penetrates through the limiting plate 5, the limiting plate 5 can play a role of supporting the infusion tube 6 or the connecting tube 8, and also can prevent the phenomenon that the infusion tube 6 or the connecting tube 8 is mutually wound.

Working principle: the electrode frame 2 and the burette 10 are firstly arranged on the automatic potentiometric titrator base 1 according to a preset step, the connecting pipe 8 is arranged between the burette 10 and the valve 9, the infusion pipe 6 is arranged on the valve 9 and the electrode frame 2, the supporting rod 4 is arranged on the automatic potentiometric titrator base 1 through the embedded structure between the mounting block 11 and the fixing hole 13, the infusion pipe 6 can be clamped in the limiting hole 505 on the fixing plate 503, then the movable plate 501 is arranged on the fixing plate 503 through the embedded structure between the fixing groove 502 and the fixing block 504, the infusion pipe 6 can penetrate through the limiting plate 5, the infusion pipe 6 is supported by the limiting plate 5, the positioning block 12 is rotated, the positioning block 12 is fixed in the area with external threads on the supporting rod 4 through the threaded structure, the position of the movable sleeve 3 is supported by the positioning block 12, the connecting rod 7 on the movable sleeve 3 is positioned at a proper position, the connecting pipe 8 penetrates through the limiting plate 5 in the same mode, when the device starts working, the connecting pipe 8 and the infusion pipe 6 are supported by the limiting plate 5, the connecting pipe 8 and the infusion pipe 6 are prevented from winding with the connecting pipe 6, and the infusion pipe 6 is prevented from vibrating mutually when the connecting pipe 8 and the infusion pipe 6 works.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (6)

1. An automatic potentiometric titrator, comprising an automatic potentiometric titrator base (1), characterized in that: be provided with electrode frame (2) and buret (10) on automatic potentiometric titration appearance base (1), and buret (10) next door is provided with valve (9), be provided with connecting pipe (8) between valve (9) and buret (10), and be connected with transfer line (6) between valve (9) and electrode frame (2), be provided with bracing piece (4) on automatic potentiometric titration appearance base (1), and be connected with on bracing piece (4) and remove sleeve (3), the lower extreme of removing sleeve (3) is connected with locating piece (12), and one side of removing sleeve (3) is provided with connecting rod (7), one side of connecting rod (7) all is connected with limiting plate (5) with the upper end of bracing piece (4), the inside of 2 limiting plate (5) is run through respectively transfer line (6) and connecting pipe (8).

2. An automatic potentiometric titrator as in claim 1, wherein: the inner diameter of the moving sleeve (3) is larger than the outer diameter of the supporting rod (4), and the outer diameter of the moving sleeve (3) is smaller than the outer diameter of the positioning block (12).

3. An automatic potentiometric titrator as in claim 1, wherein: the middle part of the supporting rod (4) is provided with external threads, the inside of the positioning block (12) is provided with internal threads, and the internal threads of the positioning block (12) are matched with the external threads on the supporting rod (4).

4. An automatic potentiometric titrator as in claim 1, wherein: the lower end of the supporting rod (4) is provided with a mounting block (11) with a T-shaped structure, the automatic potentiometric titrator base (1) is provided with a fixing hole (13), and the outline dimension of the fixing hole (13) is identical with the outline dimension of the mounting block (11).

5. An automatic potentiometric titrator as in claim 1, wherein: limiting plate (5) are including movable plate (501), fixed slot (502), fixed plate (503), fixed block (504) and spacing hole (505), are provided with fixed block (504) on movable plate (501), have seted up fixed slot (502) on fixed plate (503), and fixed slot (502) and fixed block (504) gomphosis each other, and spacing hole (505) of through-hole structure have been seted up in the centre of movable plate (501) and fixed plate (503).

6. An automatic potentiometric titrator as in claim 1, wherein: the connecting rod (7) is of a U-shaped structure.