CN215506855U - Titration apparatus for medical science experiments - Google Patents

Abstract

The utility model relates to the technical field of medical experiments, in particular to a titration apparatus for medical experiments, which comprises a base, wherein the top surface of the base is uniformly and fixedly connected with a plurality of bumps, and a placing seat for placing a conical flask is arranged above the base. According to the conical bottle placing seat, a conical bottle is pressed downwards to be placed on the top surface of the placing seat, at the moment, the conical bottle extrudes the top ends of the clamping plates, torsion springs on the clamping plates are enabled to be in torsional deformation, at the moment, the clamping plates are extruded by the conical bottle to rotate, then the clamping plates automatically reset under the action of resilience force of adjacent torsion springs, so that the top ends of the clamping plates clamp the outer arc surface of the circular truncated cone portion of the conical bottle, then a motor inside the base is started, the vertical rod is enabled to rotate, the whole placing seat is driven to rotate through the limiting plate, at the moment, the pulley slides on the lugs on the base, the whole placing seat is enabled to shake and vibrate due to the fact that the pulley advances, and therefore a user does not need to manually vibrate the conical bottle in an experiment.

Description

Titration apparatus for medical science experiments

Technical Field

The utility model relates to the technical field of medical experiments, in particular to a titration device for medical experiments.

Background

Titration is an operation means of a chemical experiment, which means that two solutions are used, one solute content is determined by reacting the two solutions and measuring the amount of the solutions, in the titration experiment, an indication end point is determined according to the color change of an indicator, and the consumption amount of a standard solution is measured after the indication end point is reached, so that the result is calculated.

In the titration experiment, the burette is clamped on the titration table by the pipe clamp, and then the conical flask is shaken by one hand to carry out oscillation reaction, the other hand controls the dripping speed of liquid in the burette, at the moment, in the experiment process, in order to facilitate the experiment, an experimenter basically performs standing experiment, at the moment, because the two hands are in front, the experimenter is difficult to penetrate through the reaction degree of the liquid in the conical flask, and because the movement of the hands is irregular and uniform, the oscillation has toggle fluctuation, after a plurality of experiments, the hands can be sore, so that the shaking amplitude of the hands is reduced, the liquid reaction is not sufficient, and because the experimenter needs to control the dripping speed of the burette, and the oscillating conical flask can distract the experimenter, and because the existing basic burette is connected with a rubber pipe, the pipe contains glass beads, the dripping speed is controlled by extruding the rubber pipe by hands, at this moment, the hand can block experimenter's sight to, the hand directly extrudes the rubber tube and relies on experiential personnel's experience, and general new person is difficult to control.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problems, the utility model aims to provide a titration apparatus for medical experiments, wherein a conical flask is pressed downwards and placed on the top surface of a placing seat, at the moment, the conical flask extrudes the top ends of a plurality of clamping plates to enable torsion springs on the plurality of clamping plates to be twisted and deformed, at the moment, the plurality of clamping plates are extruded by the conical flask to rotate, then the plurality of clamping plates automatically reset under the action of the resilience force of adjacent torsion springs, so that the top ends of the plurality of clamping plates clamp the outer arc surface of the circular truncated cone part of the conical flask, then a motor in a base is started to enable a vertical rod to rotate and drive a limiting plate to rotate, so that the limiting plate drives the placing seat to rotate through a limiting groove, at the moment, a pulley slides on a plurality of convex blocks on the base, so that the whole placing seat vibrates due to the advancing of the pulley, a user does not need to manually vibrate the conical flask in experiments, and can uniformly keep the conical flask vibrating action to enable the liquid in the placing seat to fully react, so as to observe the reaction of the liquid and more precisely control the dropping rate of the liquid.

The purpose of the utility model can be realized by the following technical scheme:

a titration apparatus for medical experiments comprises a base, wherein a plurality of convex blocks are uniformly and fixedly connected to the top surface of the base, a placing seat for placing a conical flask is arranged above the base, a plurality of clamping plates are uniformly arranged on the outer annular surface of the placing seat, rotating shafts are rotatably connected to the bottom ends of the clamping plates, two ends of each rotating shaft are rotatably connected with the outer annular surface of the placing seat, torsion springs are movably sleeved on the outer cylindrical surfaces of the rotating shafts, one ends of the torsion springs are fixedly connected to the outer annular surface of the placing seat, the other ends of the torsion springs are fixedly connected to the bottom ends of the adjacent clamping plates, a connecting rod is fixedly connected to the bottom surface of the placing seat, a pulley is rotatably connected to the bottom end on one side of the connecting rod, the outer annular surface of the pulley is contacted with the two convex blocks, a limiting groove is formed in the center of the top surface of the placing seat, a motor is arranged in the base, and a vertical rod is rotatably connected to the center of the top surface of the base, one end of the vertical rod is fixedly connected with a motor shaft, the other end of the vertical rod penetrates through the bottom surface of the placing seat and is positioned in the limiting groove, the other end of the vertical rod is fixedly connected with a limiting plate, the limiting plate is in sliding embedded connection with the inside of the limiting groove, the conical flask is forcibly pressed down to be placed on the top surface of the placing seat, at the moment, the conical flask extrudes the top ends of the clamping plates to enable torsional springs on the clamping plates to be in torsional deformation, at the moment, the clamping plates are extruded by the conical flask to rotate, so that the conical flask can be placed on the top surface of the placing seat, then, the clamping plates automatically reset under the action of the resilience force of the adjacent torsional springs, so that the top ends of the clamping plates clamp the outer arc surfaces of the circular truncated cone parts of the conical flask, and the conical flask cannot be separated from the top surface of the placing seat due to the type of the conical flask, then, a motor in the base is started to enable the vertical rod to rotate, and the vertical rod rotates to drive the limiting plate to rotate, thereby make the limiting plate drive whole the seat of placing through the spacing groove of gomphosis and rotate, place pulley on the connecting rod on the seat this moment and slide on a plurality of lugs on the base, at the pulley slip in-process, because a plurality of lugs exist, and make whole the seat of placing march and shake and vibrate because of the pulley, march the in-process at the pulley, the limiting plate slides at the spacing inslot portion, after the experiment, can directly lift the erlenmeyer flask from placing seat top surface department hard, at this moment, a plurality of cardboard atress rotate, thereby make each torsional spring deformation, thereby make the erlenmeyer flask break away from and place the seat top surface, thereby make the user of service can not need handheld erlenmeyer flask to vibrate in the experimentation, and can be even keep the erlenmeyer flask to vibrate the action so that inside liquid reaction is abundant, so that observe the reaction of liquid and the speed of dripping of more accurate control liquid.

Further, the method comprises the following steps: the outer anchor ring activity of vertical pole has cup jointed the resilience spring, and resilience spring one end with place the seat bottom surface and contact, the other end contacts with the base top surface, makes the pulley remove the in-process, places the seat and can stretch the resilience spring when shifting up, during the whereabouts, the resilience spring provides the pulling force to it is stronger to make the shock, simultaneously, the resilience spring can provide the holding power placing under a static state, prevents that pulley and connecting rod holding power are not enough to support and place the seat and make and place the seat and slightly incline.

Further, the method comprises the following steps: the lug is the semi-cylindrical structure, makes the pulley remove the in-process and can slide along the lug top surface to the seat is placed in the messenger and reciprocates and vibrate the erlenmeyer flask, and the semi-circular arc face is more convenient for the pulley and slides at the lug top surface.

Further, the method comprises the following steps: a burette is arranged above the placing seat, the burette comprises glass beads, two clamping mechanisms are arranged on two sides of the burette in a mirror symmetry manner, one end of each clamping mechanism is fixedly connected with two rotating mechanisms with parallel vertical surfaces, and a rotating rod is rotatably connected between the two rotating mechanisms;

the clamping mechanism comprises a limiting block, one end of the limiting block is fixedly connected with a bead clamping arc plate used for clamping glass beads, the other end of the limiting block is fixedly connected with two rotating mechanisms, one end of the bead clamping arc plate is fixedly connected with a supporting rod, one side of the limiting block is provided with a sliding groove, the limiting block is connected with a clamping block in a sliding mode through the sliding groove, one end of the clamping block is fixedly connected with an L-shaped push rod, the other end of the L-shaped push rod penetrates through the other end of the limiting block and extends to one side of one end of the supporting rod, the two clamping mechanisms are folded, the two bead clamping arc plates clamp the glass beads on the burette, meanwhile, the two clamping blocks clamp a rubber sheet on one side of the rubber tube wrapping the glass beads, then a user holds one ends of the two supporting rods by hands, at the moment, no gap exists around the glass beads, so that liquid cannot drip, and only two L-shaped push rods need to be pushed when liquid is required to drip, make two L type push rods promote two clamp splices and remove to rubber tube one side that makes two clamp splices cliied moves, makes to have the gap between rubber tube and the glass pearl, thereby makes burette drippage liquid, thereby makes user of service can in the experimentation, and hand and wrist leave the field of vision region, and the person of being convenient for observes the field of vision and does not block, thereby is convenient for observe the interior liquid reaction condition of erlenmeyer flask.

Further, the method comprises the following steps: and one end of the supporting rod is fixedly connected with a handheld handle, so that a user can hold the supporting rod conveniently.

Further, the method comprises the following steps: the other end of the L-shaped push rod is fixedly connected with a push block, so that a user can push the L-shaped push rod conveniently.

Further, the method comprises the following steps: slewing mechanism includes first L type pole, the stopper other end of first L type pole one end fixed connection on a fixture, and the first L type pole other end rotates with the dwang outer cylinder and is connected, first L type pole rotates through the dwang and is connected with second L type pole, and the stopper other end of second L type pole one end fixed connection on another fixture, after finishing using, rotates a fixture, and at this moment, first L type pole rotates along with the fixture who connects on two slewing mechanism to make and be connected between two fixtures, when making two fixtures fold, two stoppers on two fixtures are laminated closely.

Further, the method comprises the following steps: an arc-shaped elastic sheet is arranged between the first L-shaped rod and the second L-shaped rod, one end of the arc-shaped elastic sheet is fixedly connected to the other end of the first L-shaped rod, and the other end of the arc-shaped elastic sheet is fixedly connected to one end of the second L-shaped rod.

The utility model has the beneficial effects that:

the conical bottle is pressed downwards by force to be placed on the top surface of the placing seat, at the moment, the conical bottle extrudes the top ends of the clamping plates to enable torsion springs on the clamping plates to be twisted and deformed, at the moment, the clamping plates are extruded by the conical bottle to rotate, so that the conical bottle can be placed on the top surface of the placing seat, then, the clamping plates automatically reset under the action of resilience force of adjacent torsion springs, so that the top ends of the clamping plates clamp the outer arc surface of the circular platform part of the conical bottle, due to the type of the conical bottle, the conical bottle cannot be separated from the top surface of the placing seat, then, a motor inside the base is started to enable the vertical rod to rotate, the vertical rod rotates to drive the limiting plate to rotate, so that the limiting plate drives the whole placing seat to rotate through the embedded limiting groove, at the moment, a pulley on a connecting rod on the placing seat slides on a plurality of lugs on the base, and in the sliding process of the pulley, due to the existence of the plurality of lugs, and make whole seat of placing advance and shake because of the pulley and vibrate, at the pulley in-process of marcing, the limiting plate slides at the spacing inslot to make the user of service not need handheld erlenmeyer flask to vibrate in the experimentation, and the action of shaking so that inside liquid reaction is abundant in the maintenance erlenmeyer flask that can be even, so that observe the reaction of liquid and the drip rate of more accurate control liquid.

Drawings

The utility model will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of the overall use form of the present invention;

FIG. 2 is a schematic view of the positional relationship between the base and the seat in the present invention;

FIG. 3 is a schematic view of the structure of the placing seat and the limiting plate in the utility model;

FIG. 4 is a schematic view of the clamping mechanism of the present invention;

FIG. 5 is a schematic view of a rotary structure according to the present invention;

fig. 6 is a schematic sectional view of the base and the seat of the present invention.

In the figure: 100. a burette; 200. a clamping mechanism; 210. a limiting block; 220. a bead clamping arc plate; 230. a strut; 231. a handle; 240. a clamping block; 250. an L-shaped push rod; 251. a push block; 300. a rotating mechanism; 310. a first L-shaped bar; 320. a second L-shaped bar; 330. rotating the rod; 340. an arc-shaped elastic sheet; 400. a base; 410. a bump; 420. a placing seat; 421. a limiting groove; 430. clamping a plate; 431. a rotating shaft; 432. a torsion spring; 440. a vertical rod; 441. a limiting plate; 450. a rebound spring; 460. a connecting rod; 461. a pulley.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a titration apparatus for medical experiments comprises a base 400, a plurality of protrusions 410 are uniformly and fixedly connected to the top surface of the base 400, a placing seat 420 for placing a conical flask is disposed above the base 400, a plurality of clamping plates 430 are uniformly disposed on the outer circumferential surface of the placing seat 420, rotating shafts 431 are rotatably connected to the bottom ends of the clamping plates 430, both ends of the rotating shafts 431 are rotatably connected to the outer circumferential surface of the placing seat 420, torsion springs 432 are movably sleeved on the outer circumferential surfaces of the rotating shafts 431, one end of each torsion spring 432 is fixedly connected to the outer circumferential surface of the placing seat 420, the other end of each torsion spring 432 is fixedly connected to the bottom end of the adjacent clamping plate 430, a connecting rod 460 is fixedly connected to the bottom surface of the placing seat 420, a pulley 461 is rotatably connected to the bottom end of one side of the connecting rod 460, the outer circumferential surface of the pulley 461 is in contact with the two protrusions 410, a limiting groove 421 is disposed at the center of the top surface of the placing seat 420, a motor is disposed inside the base 400, and the center of the top surface of the base 400 is rotatably connected with a vertical rod 440, one end of the vertical rod 440 is fixedly connected with a motor shaft, the other end of the vertical rod 440 penetrates through the bottom surface of the placing base 420 and is positioned inside the limiting groove 421, the other end of the vertical rod 440 is fixedly connected with a limiting plate 441, and the limiting plate 441 is slidably embedded inside the limiting groove 421, by forcibly pressing the erlenmeyer flask down into the top surface of the placing base 420, at this time, the erlenmeyer flask extrudes the top ends of the plurality of clamping plates 430 to torsionally deform the torsion springs 432 on the plurality of clamping plates 430, at this time, the plurality of clamping plates 430 are extruded by the erlenmeyer flask to rotate, so that the erlenmeyer flask can be placed at the top surface of the placing base 420, and then the plurality of clamping plates 430 automatically reset under the resilience force of the adjacent torsion springs 432, so that the top ends of the plurality of clamping plates 430 clamp the outer arc surface of the truncated cone portion of the erlenmeyer flask, due to the pattern of the erlenmeyer flask, so that the erlenmeyer flask cannot be separated from the top surface of the placing base 420, then, the motor inside the base 400 is started to rotate the vertical rod 440, and the vertical rod 440 rotates to drive the limiting plate 441 to rotate, so that the limiting plate 441 drives the whole placing seat 420 to rotate through the embedded limiting groove 421, at this time, the pulley 461 on the connecting rod 460 on the placing seat 420 slides on the plurality of bumps 410 on the base 400, during the sliding process of the pulley 461, the whole placing seat 420 shakes and vibrates due to the traveling of the pulley 461 because of the existence of the plurality of bumps 410, during the traveling process of the pulley 461, the limiting plate 441 slides inside the limiting groove 421, after the experiment is finished, the conical flask can be directly lifted by force from the top surface of the placing seat 420, at this time, the plurality of clamping plates 430 are rotated by force, so that each torsion spring 432 is deformed, so that the conical flask is separated from the top surface of the placing seat 420, so that a user can shake without holding the conical flask in the experiment process, and can uniformly keep the conical flask shake action to make the internal liquid fully react, so as to observe the reaction of the liquid and more precisely control the dropping rate of the liquid.

The outer annular surface of the vertical rod 440 is movably sleeved with a rebound spring 450, one end of the rebound spring 450 is in contact with the bottom surface of the placing seat 420, and the other end of the rebound spring 450 is in contact with the top surface of the base 400, so that the rebound spring 450 can be stretched when the placing seat 420 moves upwards in the moving process of the pulley 461, and the rebound spring 450 provides tension when the pulley 461 falls, so that the vibration is stronger, meanwhile, the rebound spring 450 can provide supporting force in the static state of the placing seat 420, and the situation that the pulley 461 and the connecting rod 460 are not enough in supporting force to support the placing seat 420 and slightly incline the placing seat 420 is prevented; the convex block 410 is a semi-cylindrical structure, so that the pulley 461 can slide along the top surface of the convex block 410 in the moving process, the placing seat 420 can move up and down to vibrate the conical flask, and the semi-arc surface is more convenient for the pulley 461 to slide on the top surface of the convex block 410; the burette 100 is arranged above the placing seat 420, the burette 100 comprises glass beads, two clamping mechanisms 200 are arranged on two sides of the burette 100 in a mirror symmetry manner, one ends of the two clamping mechanisms 200 are fixedly connected with two rotating mechanisms 300 with parallel vertical surfaces, a rotating rod 330 is rotatably connected between the two rotating mechanisms 300, each clamping mechanism 200 comprises a limiting block 210, one end of each limiting block 210 is fixedly connected with a bead clamping arc-shaped plate 220 used for clamping the glass beads, the other end of each limiting block 210 is fixedly connected with the two rotating mechanisms 300, one end of each bead clamping arc-shaped plate 220 is fixedly connected with a supporting rod 230, one side of each limiting block 210 is provided with a sliding groove 211, each limiting block 210 is slidably connected with a clamping block 240 through the sliding groove 211, one end of each clamping block 240 is fixedly connected with an L-shaped push rod 250, the other end of each L-shaped push rod 250 penetrates through the other end of each limiting block 210 and extends to one end of each supporting rod 230, and the two clamping mechanisms 200 are folded, make two glass pearls that press from both sides on the pearl arc 220 cliies buret 100, and simultaneously, the rubber skin of rubber tube one side of parcel glass pearl is cliied to two clamp splice 240, then the user holds two branch 230 one ends with the hand, at this moment, because seamless around the glass pearl, thereby make liquid can not drip, when needing the drippage liquid, only need promote two L type push rods 250, make two L type push rods 250 promote two clamp splice 240 and remove, thereby make rubber tube one side that two clamp splice 240 cliied remove, make to have the gap between rubber tube and the glass pearl, thereby make buret 100 drippage liquid, thereby make the user of service can be in the experimentation, hand and wrist leave the field of vision region, it does not block to be convenient for the user of service observation field of vision, thereby be convenient for observe the interior liquid reaction condition of erlenmeyer flask.

One end of the supporting rod 230 is fixedly connected with a handheld handle 231, so that a user can hold the supporting rod 230 conveniently; the other end of the L-shaped push rod 250 is fixedly connected with a push block 251, so that a user can push the L-shaped push rod 250 conveniently; the rotating mechanism 300 comprises a first L-shaped rod 310, one end of the first L-shaped rod 310 is fixedly connected to the other end of the limiting block 210 on one clamping mechanism 200, the other end of the first L-shaped rod 310 is rotatably connected with the outer cylindrical surface of the rotating rod 330, the first L-shaped rod 310 is rotatably connected with a second L-shaped rod 320 through the rotating rod 330, one end of the second L-shaped rod 320 is fixedly connected to the other end of the limiting block 210 on the other clamping mechanism 200, after the use is finished, one clamping mechanism 200 is rotated, at the moment, the first L-shaped rods 310 on the two rotating mechanisms 300 rotate along with the connected clamping mechanisms 200, so that the two clamping mechanisms 200 are connected, and when the two clamping mechanisms 200 are folded, the two limiting blocks 210 on the two clamping mechanisms 200 are tightly attached; an arc-shaped elastic sheet 340 is arranged between the first L-shaped rod 310 and the second L-shaped rod 320, one end of the arc-shaped elastic sheet 340 is fixedly connected to the other end of the first L-shaped rod 310, and the other end of the arc-shaped elastic sheet 340 is fixedly connected to one end of the second L-shaped rod 320, so that the two limiting blocks 210 on the two clamping mechanisms 200 are tightly connected by using the elasticity of the arc-shaped elastic sheet 340, and the clamping force between the two clamping blocks 240 is increased.

The working principle is as follows: when the device is used, the conical bottle is pressed down by force and placed on the top surface of the placing seat 420, at the moment, the conical bottle extrudes the top ends of the clamping plates 430, the torsion springs 432 on the clamping plates 430 are twisted and deformed, at the moment, the clamping plates 430 are extruded by the conical bottle and rotate, so that the conical bottle can be placed on the top surface of the placing seat 420, then the clamping plates 430 automatically reset under the action of the resilience force of the adjacent torsion springs 432, so that the top ends of the clamping plates 430 clamp the outer arc surface of the circular truncated cone part of the conical bottle, due to the shape of the conical bottle, the conical bottle cannot be separated from the top surface of the placing seat 420, then the two clamping mechanisms 200 are folded, so that the two bead clamping arc plates 220 clamp the glass beads on the burette 100, meanwhile, the two clamping blocks 240 clamp the rubber sheet on one side of the rubber tube wrapping the glass beads, then a user holds one ends of the two supporting rods 230 by hands, at the moment, no gap is formed around the glass beads, therefore, the liquid will not drip, when the liquid needs to drip, only two L-shaped push rods 250 need to be pushed, so that the two L-shaped push rods 250 push the two clamping blocks 240 to move, so that one side of the rubber tube clamped by the two clamping blocks 240 moves, so that a gap exists between the rubber tube and the glass beads, so that the liquid drips from the burette 100, then, the motor inside the base 400 is started, so that the vertical rod 440 rotates, the vertical rod 440 rotates to drive the limiting plate 441 to rotate, so that the limiting plate 441 drives the whole placing seat 420 to rotate through the embedded limiting groove 421, at this time, the pulleys 461 on the connecting rods 460 on the placing seat 420 slide on the plurality of lugs 410 on the base 400, during the sliding process of the pulleys 461, because the plurality of lugs 410 exist, the whole placing seat 420 shakes and vibrates due to the advancing of the pulleys 461, during the advancing process of the pulleys 461, the limiting plate 441 slides inside the limiting groove 421, meanwhile, when the placing seat 420 moves upwards, the rebound spring 450 can be stretched, and when the placing seat falls, the rebound spring 450 provides pulling force, so that the vibration is stronger;

after the experiment finishes, break off two fixture 200 off with the fingers and thumb, this moment, two stopper 210 uses dwang 330 as the center rotation to the direction of leaving mutually, this moment, two arc shell fragment 340 deformation, break away from buret 100 with two fixture 200 after, can directly lift the erlenmeyer flask from placing seat 420 top surface department hard, at this moment, a plurality of cardboard 430 atress are rotated, thereby make each torsional spring 432 deformation, thereby make the erlenmeyer flask break away from and place seat 420 top surface, simultaneously, rebound spring 450 can provide the holding power under placing seat 420 quiescent condition.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the utility model to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the utility model as defined in the following claims.

Claims (8)

1. A titration apparatus for medical experiments comprises a base (400), and is characterized in that the top surface of the base (400) is uniformly and fixedly connected with a plurality of convex blocks (410), a placing seat (420) for placing a conical flask is arranged above the base (400), a plurality of clamping plates (430) are uniformly arranged on the outer annular surface of the placing seat (420), the bottoms of the clamping plates (430) are rotatably connected with rotating shafts (431), the two ends of the rotating shafts (431) are rotatably connected with the outer annular surface of the placing seat (420), torsion springs (432) are movably sleeved on the outer cylindrical surfaces of the rotating shafts (431), one ends of the torsion springs (432) are fixedly connected with the outer annular surface of the placing seat (420), the other ends of the torsion springs are fixedly connected with the bottom ends of the adjacent clamping plates (430), a connecting rod (460) is fixedly connected with the bottom surface of the placing seat (420), and a pulley (461) is rotatably connected with the bottom end of one side of the connecting rod (460), the outer ring surface of each pulley (461) is in contact with two adjacent lugs (410), a limiting groove (421) is formed in the center of the top surface of each placing seat (420), a motor is arranged inside each base (400), a vertical rod (440) is rotatably connected to the center of the top surface of each base (400), one end of each vertical rod (440) is fixedly connected with a motor shaft of the motor, the other end of each vertical rod penetrates through the bottom surface of each placing seat (420) and is located inside each limiting groove (421), a limiting plate (441) is fixedly connected to the other end of each vertical rod (440), and each limiting plate (441) is in sliding embedded with each limiting groove (421).

2. The titration apparatus for medical experiment according to claim 1, wherein the outer ring surface of the vertical rod (440) is movably sleeved with a rebound spring (450), and one end of the rebound spring (450) contacts with the bottom surface of the placing seat (420) and the other end contacts with the top surface of the base (400).

3. The titration device according to claim 1, wherein the protrusion (410) is a semi-cylindrical structure.

4. The titration apparatus for medical experiment according to claim 2, wherein a burette (100) is arranged above the placing seat (420), the burette (100) comprises glass beads, two clamping mechanisms (200) are arranged on two sides of the burette (100) in a mirror symmetry manner, one end of each clamping mechanism (200) is fixedly connected with two rotating mechanisms (300) with parallel vertical surfaces, and a rotating rod (330) is rotatably connected between the two rotating mechanisms (300);

fixture (200) includes stopper (210), stopper (210) one end fixedly connected with is used for the double-layered pearl arc (220) of centre gripping glass pearl, stopper (210) other end and two slewing mechanism (300) fixed connection, and presss from both sides pearl arc (220) one end fixedly connected with branch (230), spout (211) have been seted up to stopper (210) one side, and stopper (210) have clamp splice (240) through spout (211) sliding connection, and clamp splice (240) one end fixedly connected with L type push rod (250), L type push rod (250) other end runs through stopper (210) other end and extends to branch (230) one end one side.

5. The titration device for medical experiments according to claim 4, wherein a handle (231) is fixedly connected to one end of the support rod (230).

6. The titration apparatus for medical experiment according to claim 4, wherein the other end of the L-shaped push rod (250) is fixedly connected with a push block (251).

7. The titration apparatus for medical experiment according to claim 4, wherein the rotation mechanism (300) comprises a first L-shaped rod (310), one end of the first L-shaped rod (310) is fixedly connected to the other end of the stopper (210) on one clamping mechanism (200), the other end of the first L-shaped rod (310) is rotatably connected to the outer cylindrical surface of the rotation rod (330), the first L-shaped rod (310) is rotatably connected to a second L-shaped rod (320) through the rotation rod (330), and one end of the second L-shaped rod (320) is fixedly connected to the other end of the stopper (210) on the other clamping mechanism (200).

8. The titration apparatus according to claim 7, wherein an arc-shaped spring (340) is disposed between the first L-shaped rod (310) and the second L-shaped rod (320), and one end of the arc-shaped spring (340) is fixedly connected to the other end of the first L-shaped rod (310) and the other end of the arc-shaped spring (340) is fixedly connected to one end of the second L-shaped rod (320).

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