Automatic potentiometric titrator for detecting superfine nano calcium carbonate

Abstract

The utility model relates to the technical field of potentiometric titrators, in particular to an automatic potentiometric titrator for detecting superfine nano calcium carbonate, which comprises a titrator body, the bottom end of the titrator body is fixedly connected with a bottom plate, and the bottom end of the bottom plate is fixedly connected with a fixed cylinder which is vertically arranged and penetrates through the bottom plate; the bottom end of the fixing cylinder is fixedly connected with a hollow suction cup penetrating through the inner side of the fixing cylinder, the inner side of the fixing cylinder is fixedly connected with a supporting plate, the top end of the supporting plate is fixedly connected with a vertically-arranged tightening spring, and the top end of the tightening spring is fixedly connected with a piston. According to the titration instrument disclosed by the utility model, through the arrangement of the bottom plate, the fixed cylinder, the suction cup, the supporting plate, the tightening spring, the piston, the air inlet cylinder and the air inlet plug, the titration instrument body can be fixed on a table top, so that the titration instrument body is prevented from falling off due to the fact that an experimenter touches the titration instrument by mistake.

Description

Technical Field

[0001] The utility model relates to the technical field of potentiometric titrators, in particular to an automatic potentiometric titrator for detecting ultrafine nano calcium carbonate. Background Art

[0002] Automatic potentiometric titrator is a common analytical instrument for capacity analysis designed according to the principle of potentiometric method. The principle of potentiometric method is: select appropriate indicator electrode and reference electrode to form a working cell with the solution to be tested. With the addition of titrant, the concentration of the ion to be tested changes continuously due to chemical reaction, so the potential of the indicator electrode changes accordingly. Near the end point of titration, the concentration of the ion to be tested changes suddenly, causing a sudden jump in the electrode potential. Therefore, the titration end point can be determined based on the sudden jump in the electrode potential.

[0003] The existing automatic potentiometric titrator is usually placed directly on a desktop for use when in use. However, since it is not fixed on the desktop, it may fall to the ground due to accidental touch by the experimenter, resulting in experiment failure or even personal injury. When the titrant bottle is installed on the titrator, the existing fixing method is inconvenient and not firm. When the titrant bottle is discharged, gas needs to enter the titrant. However, the existing bottle cannot guarantee isolation from external dust, and the chemical reagent in the bottle may volatilize, causing harm to the experimenter. Therefore, in view of the above problems, an automatic potentiometric titrator for ultrafine nano calcium carbonate detection is proposed. Utility Model Content

[0004] The utility model aims to provide an automatic potentiometric titrator for detecting ultrafine nano calcium carbonate to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An automatic potentiometric titrator for detecting ultrafine nano calcium carbonate comprises a titrator body, wherein the bottom end of the titrator body is fixedly connected with a bottom plate, the bottom end of the bottom plate is fixedly connected with a vertically arranged fixed cylinder that penetrates the bottom plate, the bottom end of the fixed cylinder is fixedly connected with a sucker that is hollow inside and penetrates the inner side of the fixed cylinder, the inner side of the fixed cylinder is fixedly connected with a support plate, the top end of the support plate is fixedly connected with a vertically arranged tightening spring, the top end of the tightening spring is fixedly connected with a piston, the outer side of the sucker is fixedly connected with an inlet cylinder that is obliquely arranged and penetrates the inner side of the sucker, the end of the inlet cylinder away from the sucker is rotatably connected with an inlet plug, the top end of the bottom plate is fixedly connected with a fixed frame that is fixedly connected with the titrator body, a clamping groove is provided on the inner side of the fixed frame, a through hole that penetrates the fixed frame is provided on one side of the clamping groove, a clamping block is clamped on the inner side of the clamping groove, a limiting rod located on the inner side of the through hole is fixedly connected on one side of the clamping block, a stopper is fixedly connected to the end of the limiting rod away from the clamping block, and a reset spring is provided on the outer side of the limiting rod.

[0007] Preferably, a medicine bottle tightly fitted with the snap block is provided on the inner side of the fixed frame, a bottle stopper is snap-connected to the top of the medicine bottle, a pipette penetrating the bottle stopper is provided on the top of the bottle stopper, an air inlet bottle penetrating the inner side of the medicine bottle is provided on one side of the pipette pipette, a filter block is provided on the inner side of the air inlet bottle, a threaded cover spirally connected to the air inlet bottle is provided above the filter block, and a U-shaped tube penetrating the inner side of the air inlet bottle is fixedly connected to the top of the threaded cover.

[0008] Preferably, one end of the pipette away from the medicine bottle is fixedly connected to the titrator body and passes through the titrator body, and the outer side of the filter block is tightly fitted with the inner side of the gas inlet bottle.

[0009] Preferably, the number of the fixing cylinder, the suction cup, the support plate, the tightening spring, the piston, the air intake cylinder and the air intake plug are all four, and the outer side of the piston fits tightly with the inner side of the fixing cylinder.

[0010] Preferably, the number of the engaging groove, the through hole, the engaging block, the limiting rod, the stopper and the return spring are all two, one end of the return spring is fixedly connected to the stopper, and the end of the return spring away from the stopper is fixedly connected to the fixed frame.

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

[0012] 1. In the utility model, the titrator body can be fixed on the desktop by the bottom plate, fixed cylinder, suction cup, support plate, tightening spring, piston, air inlet cylinder and air inlet plug, so as to prevent the titrator body from falling due to accidental touch by the experimenter. A smooth desktop is selected, the device is placed on the desktop, and the bottom plate is pressed down. At this time, the gas inside the suction cup and the fixed cylinder is under pressure, causing the gas to push the piston from the inside of the fixed cylinder, and then the tightening spring is reset to drive the piston to fit tightly with the fixed cylinder again. Since the air pressure inside the suction cup and the fixed cylinder is lower than the external air pressure, the suction cup can be firmly adsorbed on the desktop. When the equipment needs to be moved elsewhere, the air inlet plug is directly turned over. At this time, the external gas enters the suction cup and the inside of the fixed cylinder through the air inlet cylinder, and the suction cup is no longer tightly fitted with the desktop, so the equipment can be moved elsewhere.

[0013] 2. In the utility model, the fixing frame, the engaging groove, the through hole, the engaging block, the limiting rod, the stopper and the reset spring are provided, so that the fixing of the medicine bottle is more firm and convenient. When the medicine bottle needs to be fixed, the stopper is pulled, and the stopper drives the limiting rod to slide inside the through hole, and the engaging block enters the inside of the engaging groove, and the reset spring is stretched. Then, the medicine bottle is put into the inside of the fixing frame, and the stopper is released. The reset spring resets and drives the limiting rod to slide inside the through hole, and the engaging block fits tightly with the medicine bottle, so that the fixing of the medicine bottle can be completed.

[0014] 3. In the utility model, the medicine bottle has a dustproof function and can prevent the chemical reagent inside the medicine bottle from volatilizing into the outside air by means of the medicine bottle, bottle stopper, pipette, air inlet bottle, filter block, threaded cover and U-shaped tube. First, the filter block is placed inside the air inlet bottle, and then the threaded cover is screwed on the inside of the air inlet bottle. When titrating, the titrant enters the inside of the titrator body from the pipette, and the outside gas enters the inside of the medicine bottle through the U-shaped tube and the air inlet bottle. The U-shaped tube can prevent the outside dust from falling directly into the inside of the medicine bottle, and the filter block can absorb the gas volatilized from the medicine bottle to prevent the chemical reagent gas from volatilizing to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the fixing component of the utility model;

[0017] Figure 3 This is a schematic diagram of the inner structure of the fixed frame of the utility model;

[0018] Figure 4 This is a schematic diagram of the bottle stopper installation structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the installation structure of the filter block of the utility model.

[0020] In the figure: 1. titrator body; 2. bottom plate; 3. fixing cylinder; 4. suction cup; 5. support plate; 6. tightening spring; 7. piston; 8. air inlet cylinder; 9. air inlet plug; 10. fixing frame; 11. engaging groove; 12. through hole; 13. engaging block; 14. limiting rod; 15. stopper; 16. reset spring; 17. medicine bottle; 18. bottle plug; 19. pipette; 20. air inlet bottle; 21. filter block; 22. threaded cover; 23. U-shaped tube. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0024] See also Figure 1-5 , the utility model provides a technical solution:

[0025] An automatic potentiometric titrator for detecting ultrafine nano calcium carbonate, comprising a titrator body 1, a bottom plate 2 is fixedly connected to the bottom end of the titrator body 1, a fixed cylinder 3 which is vertically arranged and penetrates the bottom plate 2 is fixedly connected to the bottom end of the bottom plate 2, a suction cup 4 which is hollow inside and penetrates the inner side of the fixed cylinder 3 is fixedly connected to the bottom end of the fixed cylinder 3, a support plate 5 is fixedly connected to the inner side of the fixed cylinder 3, a tightening spring 6 which is vertically arranged is fixedly connected to the top of the support plate 5, a piston 7 is fixedly connected to the top end of the tightening spring 6, and a tilted spring 6 which penetrates the inner side of the suction cup 4 is fixedly connected to the outer side of the suction cup 4 An air inlet cylinder 8 is rotatably connected to an air inlet plug 9 at one end of the air inlet cylinder 8 away from the suction cup 4, a fixed frame 10 fixedly connected to the titrator body 1 is fixedly connected to the top of the bottom plate 2, a snap-fitting groove 11 is provided on the inner side of the fixed frame 10, a through hole 12 penetrating the fixed frame 10 is provided on one side of the snap-fitting groove 11, a snap-fitting block 13 is snap-fitted to the inner side of the snap-fitting groove 11, a limiting rod 14 located on the inner side of the through hole 12 is fixedly connected to one side of the snap-fitting block 13, a stopper 15 is fixedly connected to the end of the limiting rod 14 away from the snap-fitting block 13, and a reset spring 16 is provided on the outer side of the limiting rod 14.

[0026] A medicine bottle 17 is provided on the inner side of the fixed frame 10, which is tightly fitted with the snap-fit ​​block 13. A bottle stopper 18 is snap-fitted on the top of the medicine bottle 17. A pipette 19 is provided on the top of the bottle stopper 18, which passes through the bottle stopper 18. A gas inlet bottle 20 that passes through the inner side of the medicine bottle 17 is provided on one side of the pipette 19. A filter block 21 is provided on the inner side of the gas inlet bottle 20. A threaded cap 22 that is spirally connected to the gas inlet bottle 20 is provided above the filter block 21. A U-shaped tube 23 that passes through the inner side of the gas inlet bottle 20 is fixedly connected to the top of the threaded cap 22. The end of the pipette 19 away from the medicine bottle 17 is connected to the titrator body. 1 is fixedly connected and connected with the titrator body 1, the outer side of the filter block 21 is tightly fitted with the inner side of the gas inlet bottle 20, the number of the fixed cylinder 3, the suction cup 4, the support plate 5, the tightening spring 6, the piston 7, the gas inlet cylinder 8 and the gas inlet plug 9 are four, the outer side of the piston 7 is tightly fitted with the inner side of the fixed cylinder 3, the number of the engaging groove 11, the through hole 12, the engaging block 13, the limiting rod 14, the stopper 15 and the return spring 16 are two, one end of the return spring 16 is fixedly connected with the stopper 15, and the end of the return spring 16 away from the stopper 15 is fixedly connected with the fixed frame 10.

[0027] Working process: first select a smooth desktop, place the device on the desktop, press the bottom plate 2 downward, at this time, the gas inside the suction cup 4 and the fixed cylinder 3 is under pressure, causing the gas to push the piston 7 from the inside of the fixed cylinder 3, and then tighten the spring 6 to reset and drive the piston 7 to fit tightly with the fixed cylinder 3 again. Since the air pressure inside the suction cup 4 and the fixed cylinder 3 is lower than the external air pressure, the suction cup 4 can be firmly adsorbed on the desktop. When the device needs to be moved elsewhere, directly flip the air inlet plug 9. At this time, the external gas enters the suction cup 4 and the inside of the fixed cylinder 3 through the air inlet cylinder 8, and the suction cup 4 is no longer tightly fitted to the desktop, so the device can be moved elsewhere. When the medicine bottle 17 needs to be fixed, pull the stopper 15, and the stopper 15 drives the limit rod 14 to slide inside the through hole 12, and the locking block 13 enters the inside of the locking groove 11. The return spring 16 is stretched, and then the medicine bottle 17 is placed inside the fixed frame 10, and the stopper 15 is loosened. The return spring 16 is reset to drive the limit rod 14 to slide inside the through hole 12, and the clamping block 13 is tightly fitted with the medicine bottle 17, so that the fixation of the medicine bottle 17 can be completed. Then the bottle stopper 18 is inserted into the inside of the medicine bottle 17, and the filter block 21 is placed inside the gas inlet bottle 20, and then the threaded cover 22 is screwed on the inside of the gas inlet bottle 20. When titrating, the titrant enters the inside of the titrator body 1 from the pipette 19, and the external gas enters the inside of the medicine bottle 17 through the U-shaped tube 23 and the gas inlet bottle 20. The U-shaped tube 23 can prevent external dust from falling directly into the inside of the medicine bottle 17, and the filter block 21 can absorb the gas volatilized from the medicine bottle 17 to prevent the chemical reagent gas from volatilizing to the outside.

[0028] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic potentiometric titrator for detecting ultrafine nano-calcium carbonate, comprising a titrator body (1), characterized in that: The bottom end of the titrator body (1) is fixedly connected to a bottom plate (2), the bottom end of the bottom plate (2) is fixedly connected to a vertically arranged fixed cylinder (3) that penetrates the bottom plate (2), the bottom end of the fixed cylinder (3) is fixedly connected to a suction cup (4) that is hollow inside and penetrates the inner side of the fixed cylinder (3), the inner side of the fixed cylinder (3) is fixedly connected to a support plate (5), the top end of the support plate (5) is fixedly connected to a vertically arranged tightening spring (6), the top end of the tightening spring (6) is fixedly connected to a piston (7), the outer side of the suction cup (4) is fixedly connected to an inlet cylinder (8) that is inclined and penetrates the inner side of the suction cup (4), and the inlet cylinder (8) is away from the suction cup (4). ) is rotatably connected to an air inlet plug (9), the top of the bottom plate (2) is fixedly connected to a fixing frame (10) fixedly connected to a titrator body (1), a snap-fitting groove (11) is provided on the inner side of the fixing frame (10), one side of the snap-fitting groove (11) is provided with a through hole (12) penetrating the fixing frame (10), a snap-fitting block (13) is snap-fitted to the inner side of the snap-fitting groove (11), one side of the snap-fitting block (13) is fixedly connected to a limiting rod (14) located on the inner side of the through hole (12), one end of the limiting rod (14) away from the locking block (13) is fixedly connected to a stopper (15), and a return spring (16) is provided on the outer side of the limiting rod (14).

2. The automatic potentiometric titrator for ultrafine nano calcium carbonate detection according to claim 1, characterized in that: The inner side of the fixed frame (10) is provided with a medicine bottle (17) which is tightly fitted with the locking block (13); the top of the medicine bottle (17) is locked and connected with a bottle stopper (18); the top of the bottle stopper (18) is provided with a liquid pipette (19) which passes through the bottle stopper (18); one side of the liquid pipette (19) is provided with an air inlet bottle (20) which passes through the inner side of the medicine bottle (17); the inner side of the air inlet bottle (20) is provided with a filter block (21); the upper side of the filter block (21) is provided with a threaded cover (22) which is spirally connected to the air inlet bottle (20); the top of the threaded cover (22) is fixedly connected with a U-shaped tube (23) which passes through the inner side of the air inlet bottle (20).

3. An automatic potentiometric titrator for ultrafine nano calcium carbonate detection according to claim 2, characterized in that: One end of the pipette (19) away from the medicine bottle (17) is fixedly connected to the titrator body (1) and penetrates the titrator body (1), and the outer side of the filter block (21) is tightly fitted with the inner side of the gas inlet bottle (20).

4. The automatic potentiometric titrator for ultrafine nano calcium carbonate detection according to claim 1, characterized in that: The number of the fixing cylinder (3), suction cup (4), support plate (5), tightening spring (6), piston (7), air intake cylinder (8) and air intake plug (9) is four, and the outer side of the piston (7) is tightly fitted with the inner side of the fixing cylinder (3).

5. The automatic potentiometric titrator for ultrafine nano calcium carbonate detection according to claim 1, characterized in that: The number of the engaging groove (11), the through hole (12), the engaging block (13), the limiting rod (14), the stopper (15) and the return spring (16) are all two; one end of the return spring (16) is fixedly connected to the stopper (15); and the end of the return spring (16) away from the stopper (15) is fixedly connected to the fixed frame (10).

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