Burette cleaning device for Karl moisture meter

Abstract

The utility model relates to the technical field of burette cleaning, and discloses a burette cleaning device for a Karl moisture meter, which solves the problem of poor cleaning effect on the inner wall of a burette at present, and comprises a base, the top of the base is fixedly connected with a box body, the bottom of the box body is fixedly connected with a drain pipe, and the top of the box body is provided with an adjusting mechanism. A clamping mechanism is arranged on the adjusting mechanism, the adjusting mechanism comprises a U-shaped round rod fixed to the top of the box body, the outer side of the U-shaped round rod is movably sleeved with a threaded sleeve, an electric push rod is fixedly installed at the bottom of the threaded sleeve, a lifting disc is fixedly connected to the output end of the electric push rod, and a driving motor is fixedly installed at the bottom of the lifting disc; the driving motor is fixedly connected with a driving shaft, and the bottom end of the driving shaft is fixedly connected with a chassis; according to the burette cleaning device, the burettes can be sequentially cleaned through the special cleaning solvent and the pure water, so that the cleaning effect on the inner walls of the burettes is conveniently improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of burette cleaning, in particular to a burette cleaning device for a Karl Fischer titrator. Background Art

[0002] The Karl Fischer titrator burette is a core component used for the precise metering and addition of Karl Fischer reagent in the Karl Fischer titration method. It is typically a slender glass tube with a precise inner scale. A piston or solenoid valve controls the addition rate and dosage. Its structure must be adapted to the characteristics of the Karl Fischer reagent, with common sizes ranging from 1 to 50 mL. The burette precisely releases the reagent, which reacts quantitatively with the water in the sample. The sample's moisture content is ultimately calculated based on the reagent consumption. It is a critical metering component for ensuring accurate measurement results. The Karl Fischer reagent, composed of iodine, sulfur dioxide, pyridine, and methanol, is highly corrosive and oxidizing, and is highly sensitive to moisture. After use, the burette may retain reagent residue on the inner wall and in the gap between the piston. If not thoroughly removed, this residual reagent will prematurely react with the water in the sample being subsequently measured, resulting in an inflated value. Furthermore, long-term adherence of residual reagent can corrode the burette's inner wall, blurring the scale or causing the piston to stick, directly impacting measurement accuracy.

[0003] The cleaning methods in the prior art mostly rely on manual operations, generally using a brush to wipe the inner wall. However, the slender structure of the burette prevents the brush from penetrating deeply, resulting in poor cleaning effect on the inner wall of the burette. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a burette cleaning device for a Karl Fischer titrator, which effectively solves the problem of poor cleaning effect on the inner wall of the burette.

[0005] To achieve the above object, the utility model provides the following technical solution: a burette cleaning device for a Karl Fischer titrator, comprising a base, a box body fixedly connected to the top of the base, a drain pipe fixedly connected to the bottom of the box body, an adjustment mechanism provided on the top of the box body, and a clamping mechanism provided on the adjustment mechanism;

[0006] The adjusting mechanism includes a U-shaped round rod fixed to the top of the box body, a screw sleeve is movably sleeved on the outer side of the U-shaped round rod, an electric push rod is fixedly installed on the bottom of the screw sleeve, a lifting plate is fixedly connected to the output end of the electric push rod, a driving motor is fixedly installed on the bottom of the lifting plate, a driving shaft is fixedly connected to the driving motor, and the bottom end of the driving shaft is fixedly connected to the chassis, a clamping mechanism is arranged at the bottom of the chassis, two sleeves are symmetrically sleeved on the outer side of the U-shaped round rod, an adjusting motor is fixedly installed on the outer side of one of the sleeves, a screw is fixedly connected on the adjusting motor, an end of the screw away from the adjusting motor is rotatably connected to the other sleeve, the screw sleeve is threadedly sleeved on the outer side of the screw, and two limiting rings are symmetrically sleeved on the outer side of the U-shaped round rod, the screw sleeve is located between the two limiting rings, and the screw sleeve abuts against one of the limiting rings;

[0007] An inner plate is fixedly installed inside the box, and two nozzles are symmetrically fixedly connected to the top of the inner plate. Multiple spray holes are provided on the outer sides of the two nozzles, and the chassis is located directly above one of the nozzles.

[0008] Preferably, the outer sides of the two nozzles are fixedly connected with infusion tubes, one end of the two infusion tubes extends to the outside of the box and is fixedly connected with a liquid pump, the two liquid pumps are fixed to the outside of the box, the two liquid pumps are fixedly connected with liquid extraction tubes, one end of the two liquid extraction tubes is fixedly connected with a liquid storage barrel, and the two liquid storage barrels are fixed to the top of the base.

[0009] Preferably, two limiting rods are symmetrically fixedly connected to the top of the lifting plate, and both limiting rods pass through the threaded sleeve and are movably connected to the threaded sleeve.

[0010] Preferably, a plurality of push rods are fixedly connected to the top of the chassis at equal angles, and the top end of each push rod is provided with a ball located at the bottom of the lifting plate.

[0011] Preferably, the clamping mechanism includes a bottom sleeve fixed to the bottom of the chassis, and two guide round rods are symmetrically fixedly connected between the bottom sleeve and the chassis, the outer sides of the two guide round rods are movably sleeved with guide plates, the sides of the two guide plates close to each other are fixedly connected with arc-shaped splints, and the inner sides of the two arc-shaped splints are fixedly connected with rubber pads.

[0012] Preferably, a U-shaped plate is fixedly sleeved between the two guide round rods, and the inner side of the U-shaped plate is rotatably connected to a bidirectional screw rod, one end of the bidirectional screw rod extends to the outer side of the U-shaped plate and is fixedly connected to a handwheel, and the outer side of the bidirectional screw rod is symmetrically threaded with two nuts, and the two guide plates are respectively fixed to the outer sides of the two nuts.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The coordination among the drive motor, drive shaft, chassis, lifting plate, electric push rod, screw sleeve, U-shaped round rod, adjustment motor and screw facilitates rotation, horizontal movement and lifting. The coordination among the liquid storage barrel, liquid extraction tube, liquid extraction pump, liquid infusion tube, nozzle and nozzle hole enables the burette to be cleaned in sequence with a special cleaning solvent and pure water, thereby improving the cleaning effect of the inner wall of the burette.

[0015] 2. Through the cooperation between the hand wheel, the bidirectional screw rod, the nut, the guide plate, the guide round rod and the arc clamping plate, the two rubber pads are close to each other to clamp the burette, thereby facilitating the fixing of the burette to the bottom of the chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the attached figure:

[0018] Figure 1 This is a schematic diagram of the structure of a burette cleaning device for a Karl Fischer titrator according to the present invention;

[0019] Figure 2 This is a schematic diagram of the nozzle structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the screw sleeve structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the clamping mechanism of the utility model.

[0023] In the figure: 1, base; 2, adjustment mechanism; 201, U-shaped round rod; 202, adjustment motor; 203, electric push rod; 204, limit ring; 205, sleeve; 206, screw; 207, screw sleeve; 208, limit rod; 209, ball; 2010, push rod; 2011, drive shaft; 2012, chassis; 2013, drive motor; 2014, lifting plate; 3 , clamping mechanism; 301, bottom sleeve; 302, guide rod; 303, arc-shaped splint; 304, rubber pad; 305, bidirectional screw; 306, guide plate; 307, nut; 308, handwheel; 309, U-shaped plate; 4, nozzle; 5, discharge pipe; 6, box body; 7, liquid pump; 8, inner plate; 9, liquid storage barrel; 10, liquid extraction pipe; 11, infusion pipe; 12, spray hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Embodiment 1, by Figure 1 The utility model relates to a burette cleaning device for a Karl Fischer titrator, comprising a base 1, a box body 6 being fixedly connected to the top of the base 1, a drain pipe 5 being fixedly connected to the bottom of the box body 6, a valve being provided on the drain pipe 5, and waste liquid after cleaning is collected through the box body 6. When the valve is opened, the waste liquid is easily discharged, an adjusting mechanism 2 is provided on the top of the box body 6, and a clamping mechanism 3 is provided on the adjusting mechanism 2.

[0026] Specifically, by Figure 2-4It is given that the adjustment mechanism 2 includes a U-shaped round rod 201 fixed to the top of the box body 6, and the outer side of the U-shaped round rod 201 is movably sleeved with a screw sleeve 207, and the bottom of the screw sleeve 207 is fixedly installed with an electric push rod 203, and the output end of the electric push rod 203 is fixedly connected to a lifting plate 2014, and the bottom of the lifting plate 2014 is fixedly installed with a drive motor 2013, and the drive motor 2013 is fixedly connected to a drive shaft 2011, and the bottom end of the drive shaft 2011 is fixedly connected to a chassis 2012, and the clamping mechanism 3 is arranged at the bottom of the chassis 2012, and the outer side of the U-shaped round rod 201 is symmetrically fixedly sleeved with two sleeve blocks 205, and the outer side of one of the sleeve blocks 205 is fixedly installed with an adjustment motor 202, and the adjustment motor 202 is fixed It is connected with a screw rod 206, and one end of the screw rod 206 away from the regulating motor 202 is rotatably connected with another sleeve block 205, and the screw sleeve 207 is threadedly sleeved on the outside of the screw rod 206. Two limiting rings 204 are symmetrically fixedly sleeved on the outside of the U-shaped round rod 201, and the screw sleeve 207 is located between the two limiting rings 204, and the screw sleeve 207 abuts against one of the limiting rings 204. The inside of the box body 6 is fixedly installed with an inner plate 8, and the top of the inner plate 8 is symmetrically fixedly connected with two nozzles 4. The outsides of the two nozzles 4 are provided with a plurality of spray holes 12. The chassis 2012 is located just above one of the nozzles 4. The outsides of the two nozzles 4 are fixedly connected with an infusion tube 11, and one end of the two infusion tubes 11 extends to the outside of the box body 6 and is fixedly connected. Liquid pump 7, two liquid pumps 7 are fixed on the outside of the box 6, and liquid pumps 10 are fixedly connected to the two liquid pumps 7. One end of the two liquid pumping tubes 10 is fixedly connected to a liquid storage barrel 9. The two liquid storage barrels 9 are fixed to the top of the base 1. Special cleaning solvent and pure water are stored in the two liquid storage barrels 9 respectively. When the two liquid pumps 7 are started, the special cleaning solvent and pure water are conveniently entered into the two nozzles 4 respectively and sprayed out from each spray hole 12. When the screw sleeve 207 abuts against one of the limiting rings 204, the screw sleeve 207 is located directly above one of the nozzles 4. When the screw sleeve 207 abuts against the other limiting ring 204, the screw sleeve 207 is located directly above the other nozzle 4, which is convenient for the burette to be quickly put on the corresponding nozzle. On the outside, the top of the lifting plate 2014 is symmetrically fixedly connected to two limiting rods 208, both of which penetrate the screw sleeve 207 and are movably connected to the screw sleeve 207. The limiting rods 208 are rigidly constrained by the screw sleeve 207. At the same time, the symmetrical distribution of the two limiting rods 208 can suppress the shaking during the lifting process, ensuring the stable lifting of the lifting plate 2014. The top of the chassis 2012 is fixedly connected to multiple push rods 2010 at equal angles. The top of each push rod 2010 is provided with a ball 209 located at the bottom of the lifting plate 2014. When the chassis 2012 rotates, each push rod 2010 drives each ball 209 to roll on the bottom of the lifting plate 2014, ensuring the stability of the chassis 2012 during rotation.

[0027] In use, when the drive motor 2013 is started, the drive shaft 2011 is driven to rotate, and the chassis 2012 is driven to rotate, thereby realizing the rotation of the burette. When the electric push rod 203 is started, the lifting plate 2014 is driven to move, thereby realizing the lifting of the burette. When the adjustment motor 202 is started, the screw 206 is driven to rotate, and the screw sleeve 207 is driven to slide along the U-shaped round rod 201, thereby realizing the horizontal movement of the burette, so that the burette can be sequentially sleeved on the outside of the two nozzles 4, and the burette is sequentially cleaned with a special cleaning solvent and pure water, thereby improving the cleaning effect of the inner wall of the burette.

[0028] Specifically, by Figure 5 The clamping mechanism 3 includes a bottom sleeve 301 fixed to the bottom of the chassis 2012, and two guide round rods 302 are symmetrically fixedly connected between the bottom sleeve 301 and the chassis 2012. The outer sides of the two guide round rods 302 are movably sleeved with guide plates 306, and the sides of the two guide plates 306 close to each other are fixedly connected with arc-shaped clamping plates 303, and the inner sides of the two arc-shaped clamping plates 303 are fixedly connected with rubber pads 304. A U-shaped plate 309 is fixedly sleeved between the two guide round rods 302, and the inner side of the U-shaped plate 309 is rotatably connected to a bidirectional screw rod 305. One end of the bidirectional screw rod 305 extends to the outer side of the U-shaped plate 309 and is fixedly connected to a handwheel 308. The outer side of the bidirectional screw rod 305 is symmetrically threaded with two screw nuts 307, and the two guide plates 306 are respectively fixed to the outer sides of the two screw nuts 307;

[0029] When in use, the burette is first placed against the inner bottom wall of the bottom sleeve 301 so that the opening of the burette faces downward. Then, the handwheel 308 is rotated to drive the bidirectional screw rod 305 to rotate. The two guide plates 306 are driven to slide along the two guide rods 302 respectively through the two screw nuts 307. At the same time, the two arc-shaped clamping plates 303 approach each other until the two rubber pads 304 are tightly fitted against the outer wall of the burette. Finally, the burette is fixed to the bottom of the chassis 2012.

Claims

1. A burette cleaning device for a Karl Fischer titrator, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a box body (6), the bottom of the box body (6) is fixedly connected to a liquid discharge pipe (5), the top of the box body (6) is provided with an adjustment mechanism (2), and the adjustment mechanism (2) is provided with a clamping mechanism (3); The adjusting mechanism (2) comprises a U-shaped round rod (201) fixed to the top of the box (6), a screw sleeve (207) is movably sleeved on the outer side of the U-shaped round rod (201), an electric push rod (203) is fixedly installed on the bottom of the screw sleeve (207), a lifting plate (2014) is fixedly connected to the output end of the electric push rod (203), a driving motor (213) is fixedly installed on the bottom of the lifting plate (2014), a driving shaft (211) is fixedly connected to the driving motor (213), and the bottom end of the driving shaft (211) is fixedly connected to the chassis (212), the clamping mechanism (3) is arranged at the bottom of the chassis (2012), and the U-shaped round rod (201) is fixedly sleeved on the outer side of the U-shaped round rod (201). Two sleeves (205) are symmetrically and fixedly sleeved on the outer side of the rod (201), an adjustment motor (202) is fixedly installed on the outer side of one of the sleeves (205), a screw (206) is fixedly connected to the adjustment motor (202), one end of the screw (206) away from the adjustment motor (202) is rotatably connected to the other sleeve (205), a screw sleeve (207) is threadedly sleeved on the outer side of the screw (206), and two limiting rings (204) are symmetrically and fixedly sleeved on the outer side of the U-shaped round rod (201), the screw sleeve (207) is located between the two limiting rings (204), and the screw sleeve (207) abuts against one of the limiting rings (204); An inner plate (8) is fixedly installed inside the box body (6), and two nozzles (4) are symmetrically fixedly connected to the top of the inner plate (8). The outer sides of the two nozzles (4) are each provided with a plurality of spray holes (12), and the chassis (2012) is located directly above one of the nozzles (4).

2. The burette cleaning device for a Karl Fischer titrator according to claim 1, characterized in that: The outer sides of the two nozzles (4) are fixedly connected to a liquid infusion tube (11), one end of each of the two liquid infusion tubes (11) extends to the outer side of the box (6) and is fixedly connected to a liquid extraction pump (7), the two liquid extraction pumps (7) are fixed to the outer side of the box (6), the two liquid extraction pumps (7) are fixedly connected to a liquid extraction tube (10), one end of each of the two liquid extraction tubes (10) is fixedly connected to a liquid storage barrel (9), and the two liquid storage barrels (9) are fixed to the top of the base (1).

3. The burette cleaning device for a Karl Fischer titrator according to claim 1, characterized in that: Two limiting rods (208) are symmetrically fixedly connected to the top of the lifting plate (2014), and both limiting rods (208) pass through the screw sleeve (207) and are movably connected to the screw sleeve (207).

4. The burette cleaning device for a Karl Fischer titrator according to claim 1, characterized in that: A plurality of push rods (2010) are fixedly connected at equal angles to the top of the chassis (2012), and a ball (209) located at the bottom of the lifting plate (2014) is provided at the top of each push rod (2010).

5. The burette cleaning device for a Karl Fischer titrator according to claim 1, characterized in that: The clamping mechanism (3) comprises a bottom sleeve (301) fixed to the bottom of the chassis (2012); two guide round rods (302) are symmetrically fixedly connected between the bottom sleeve (301) and the chassis (2012); guide plates (306) are movably sleeved on the outer sides of the two guide round rods (302); arc-shaped clamping plates (303) are fixedly connected to the sides of the two guide plates (306) that are close to each other; and rubber pads (304) are fixedly connected to the inner sides of the two arc-shaped clamping plates (303).

6. The burette cleaning device for a Karl Fischer titrator according to claim 5, characterized in that: A U-shaped plate (309) is fixedly sleeved between the two guide round rods (302), and a bidirectional screw rod (305) is rotatably connected to the inner side of the U-shaped plate (309). One end of the bidirectional screw rod (305) extends to the outer side of the U-shaped plate (309) and is fixedly connected to a handwheel (308). Two screw nuts (307) are symmetrically sleeved on the outer side of the bidirectional screw rod (305), and two guide plates (306) are respectively fixed to the outer sides of the two screw nuts (307).

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