Titration auxiliary device for preventive medicine experiment

Abstract

The invention relates to the technical field of medical titration experiments, in particular to a preventive medical experiment titration auxiliary device which comprises a chassis, a titration auxiliary mechanism is mounted at the top of the chassis, the titration auxiliary mechanism comprises a rotating disc, the rotating disc is rotatably mounted at the top of the chassis, and a main rod is fixedly mounted at the top of the chassis. The main rod is rotatably connected with the rotating disc, the sliding groove is formed in the surface of the main rod, two fixing plates are slidably mounted in the sliding groove, the burette is mounted between the two fixing plates, and a liquid storage ball is fixedly mounted at the top of the burette. Through the arrangement of the titration auxiliary mechanism, different conical flasks can be switched, continuous titration is realized through rapid switching, the experiment process is smoother, time waste caused by waiting or re-preparation of instruments is reduced, the set dripping speed can be always kept, personal errors are effectively avoided, and experiment data are more reliable.

Description

Technical Field

[0001] The invention relates to the technical field of medical titration experiments, in particular to a preventive medicine experiment titration auxiliary device. Background Art

[0002] Titration experiments are often used in medical or chemical experiments to conduct quantitative analysis of the solute content in a solution. The content of a certain reactant is determined by using an indicator to quantitatively react with the reactant solute in the solution. Titration experiments require the use of burettes, containers and other auxiliary devices to complete the titration experiment.

[0003] In existing titration experiments, most of them adopt the method of squeezing glass beads or rotating pistons to control the dripping speed. When manually controlling the dripping speed, if the operation is improper or too much force is used, the titration solution may drip too fast, generating a large impact force, causing the solution in the conical flask to splash out, which will not only affect the experimental results, but also may cause harm to the operator, especially when the titration solution is corrosive or toxic, the risk is even greater. Summary of the invention

[0004] In order to make up for the above deficiencies, the present invention provides a preventive medicine experiment titration auxiliary device that overcomes the above technical problems or at least partially solves the above problems.

[0005] The present invention is achieved in that: The present invention provides a preventive medicine experiment titration auxiliary device, comprising a chassis, a titration auxiliary mechanism is installed on the top of the chassis, and the titration auxiliary mechanism comprises: A rotating disk, the rotating disk is rotatably mounted on the top of the chassis, a main rod is fixedly mounted on the top of the chassis, and the main rod is rotatably connected to the rotating disk; A sliding groove, the sliding groove is opened on the surface of the main rod, a fixing plate is slidably installed inside the sliding groove, and two fixing plates are provided; A burette, the burette is installed between two fixed plates, a liquid storage ball is fixedly installed on the top of the burette, a burette tip is installed on the bottom of the burette, and a rubber hose is sleeved on the surface of the burette tip; The tray is fixedly mounted on the top of the rotating disk, and a plurality of trays are provided, and conical bottles are placed inside the plurality of trays.

[0006] In one embodiment of the present invention, a sliding ring is fixedly installed on the top of the two fixing plates, a threaded hole is opened on the surface of the sliding ring, a bolt is installed on the internal thread of the threaded hole, a first rotating handle is fixedly installed on the side of the bolt, a first fixing hole is opened on the surface of the top fixing plate, and a second fixing hole is opened on the surface of the bottom fixing plate, and the first fixing hole and the second fixing hole both pass through the entire fixing plate.

[0007] In one embodiment of the present invention, a liquid inlet pipe is fixedly installed on the top of the liquid storage ball, a dust plug is installed inside the liquid inlet pipe, a titration control mechanism is installed at the bottom of the burette, the bottom of the titration control mechanism is detachably connected to the burette tip, the burette is connected to the burette tip through the titration control mechanism, and the rubber hose is arranged directly above the conical flask.

[0008] In one embodiment of the present invention, the titration control mechanism includes a mounting tube, the mounting tube is fixedly mounted on the bottom of the burette, the bottom of the mounting tube is detachably connected to the burette tip, the mounting tube is communicated with the burette and the burette tip, a piston is slidably mounted inside the mounting tube, a first threaded rod is fixedly mounted on the side of the piston, the first threaded rod passes through the outside of the mounting tube and is slidably connected to the mounting tube.

[0009] In one embodiment of the present invention, a first motor is fixedly installed on the bottom of the fixed plate at the bottom, a first rotating shaft is fixedly installed on the output end of the first motor, the first rotating shaft passes through the top of the bottom fixed plate, the first rotating shaft is rotatably connected to the bottom fixed plate, a convex plate is fixedly installed on the top of the first rotating shaft, a support plate is fixedly installed on the top of the fixed plate at the bottom, a sliding column is slidably installed on the side of the support plate, two sliding columns are provided, push plates are fixedly installed on the sides of the two sliding columns, springs are sleeved on the surfaces of the two sliding columns, and the springs are provided between the support plate and the push plate.

[0010] In one embodiment of the present invention, a mounting plate is fixedly installed on the side of the support plate, a slide rail is fixedly installed on the top of the mounting plate, a sliding plate is slidably installed inside the slide rail, a first tooth plate is fixedly installed on the top of the sliding plate, a second tooth plate is fixedly installed on the side of the sliding plate, a second rotating shaft is rotatably installed on the top of the mounting plate, the second rotating shaft passes through the bottom of the mounting plate, a first gear is fixedly installed on the top of the second rotating shaft, and the first gear is meshed with the second tooth plate.

[0011] In one embodiment of the present invention, a U-shaped plate is fixedly installed on the side of the push plate, a tooth groove is opened on the inner side of the U-shaped plate, a second gear is fixedly installed on the bottom of the second rotating shaft, the second gear is meshed with the tooth groove, a limiting plate is fixedly installed on the side of the first threaded rod, a third gear is rotatably installed on the side of the mounting tube, the third gear is threadedly connected to the first threaded rod, and the third gear is meshed with the first tooth plate.

[0012] In one embodiment of the present invention, a reaction mechanism is installed inside the main rod, and the reaction mechanism includes an installation cavity, which is opened at the bottom of the main rod, and a mounting column is fixedly installed inside the installation cavity, and a second motor is fixedly installed inside the mounting column, and a rotating plate is fixedly installed at the output end of the second motor, and a fixing groove is opened on the top of the rotating plate, and a second threaded rod is rotatably installed inside the fixing groove.

[0013] In one embodiment of the present invention, a third rotating shaft is rotatably installed on the side of the rotating plate, a second rotating handle is fixedly installed on the end of the third rotating shaft, the third rotating shaft is fixedly connected to the second threaded rod, a threaded block is threadedly installed on the surface of the second threaded rod, and a rotating block is rotatably installed on the top of the threaded block.

[0014] In one embodiment of the present invention, a mounting bracket is fixedly installed on the surface of the mounting column, a first sliding rod is installed inside the mounting bracket, a bottom block is slidably installed on the surface of the first sliding rod, a mounting cylinder is fixedly installed on the top of the bottom block, a fixing column is fixedly installed on the side of the rotating block, the fixing column is slidably connected to the mounting cylinder, an elastic rubber is fixedly installed on the end of the fixing column, a first fixing ring is fixedly installed on the end of the elastic rubber, a support plate is fixedly installed on the top of the first fixing ring, a second fixing ring is fixedly installed on the side of the support plate, a photoelectric sensor is fixedly installed on the bottom of the support plate, a vertical plate is fixedly installed on the top of the support plate, an electric telescopic rod is fixedly installed on the side of the vertical plate, an extrusion plate is fixedly installed on the telescopic end of the electric telescopic rod, and a side plate is fixedly installed on the top of the second fixing ring.

[0015] The present invention provides a preventive medicine experimental titration auxiliary device, and its beneficial effects include: 1. Through the setting of the titration auxiliary mechanism, the distance between the two fixed plates can be changed, and different conical flasks can be switched. The height of the fixed frame can be adjusted to keep the tip of the burette at a suitable distance from the liquid surface in the conical flask, which is convenient for the titration liquid to drip vertically into the conical flask, allowing the operator to control the titration process more easily and accurately. The automatic switching of conical flasks allows the staff to prepare multiple conical flasks containing different samples or solutions in different reaction stages in advance. Through rapid switching, continuous titration is achieved, making the experimental process smoother and reducing the time wasted due to waiting or re-preparing the instrument.

[0016] 2. Through the setting of the titration control mechanism, the dripping speed can be accurately controlled by the first motor. When the dripping speed is manually controlled, the operator may have uneven or inaccurate dripping speed due to factors such as fatigue and lack of concentration. However, the control of the first motor is not affected by human factors and can always maintain the set dripping speed, which effectively avoids human errors and makes the experimental data more reliable.

[0017] 3. Through the setting of the reaction mechanism, the conical flask can be automatically shaken during the test. Automatic shaking of the conical flask can ensure that the solution is evenly mixed during the entire titration process. By accurately controlling the frequency, amplitude and direction of shaking, the titrant and the titrated solution can be quickly and fully contacted and reacted to avoid local concentrations that are too high or too low, making the reaction more complete and thorough, thereby improving the accuracy and reliability of the titration results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the overall rear view structure provided for an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a titration auxiliary mechanism provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a titration control mechanism provided in an embodiment of the present invention; Figure 5 A schematic diagram of the top structure of a chassis provided in an embodiment of the present invention; Figure 6 A schematic diagram of the internal structure of the installation cavity provided in an embodiment of the present invention; Figure 7 A schematic diagram of the reaction mechanism structure provided in an embodiment of the present invention; Figure 8 The embodiments of the present invention provide Figure 4 A schematic diagram of the enlarged structure of the middle part A; Fig. 9 The embodiments of the present invention provide Figure 6 Schematic diagram of the enlarged structure of part B in the middle.

[0020] In the figure: 1, chassis; 2, titration auxiliary mechanism; 201, rotating disk; 202, main rod; 203, sliding groove; 204, fixing plate; 205, burette; 206, liquid storage ball; 207, burette tip; 208, rubber hose; 209, tray; 210, conical flask; 211, sliding ring; 212, threaded hole; 213, bolt; 214, first rotating handle; 215, first fixing hole; 21 6. second fixing hole; 217. liquid inlet pipe; 218. dust plug; 3. titration control mechanism; 301. mounting tube; 302. piston; 303. first threaded rod; 304. first motor; 305. first rotating shaft; 306. convex plate; 307. support plate; 308. sliding column; 309. push plate; 310. spring; 311. slide rail; 312. slide plate; 313. first tooth plate; 314. first two tooth plates; 315, second rotating shaft; 316, first gear; 317, U-shaped plate; 318, tooth groove; 319, second gear; 320, limit plate; 321, third gear; 322, mounting plate; 4, reaction mechanism; 401, mounting cavity; 402, mounting column; 403, second motor; 404, rotating plate; 405, fixing groove; 406, second threaded rod; 407, third rotating shaft; 408, second rotating handle; 409, mounting frame; 410, first sliding rod; 411, bottom block; 412, mounting cylinder; 413, fixing column; 414, elastic rubber; 415, first fixing ring; 416, support plate; 417, second fixing ring; 418, photoelectric sensor; 419, vertical plate; 420, electric telescopic rod; 421, extrusion plate; 422, side plate; 423, threaded block; 424, rotating block. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Reference Figure 1-Figure 9The technical scheme provides a preventive medicine experimental titration auxiliary device, which specifically includes a chassis 1, a titration auxiliary mechanism 2 is installed on the top of the chassis 1, and the titration auxiliary mechanism 2 includes a rotating disk 201, the rotating disk 201 is rotatably installed on the top of the chassis 1, a main rod 202 is fixedly installed on the top of the chassis 1, the main rod 202 is rotatably connected to the rotating disk 201, a sliding groove 203 is opened on the surface of the main rod 202, and a fixed plate 204 is slidably installed inside the sliding groove 203, and two fixed plates 204 are provided. The distance between the two fixed plates 204 can be adjusted as needed to meet the needs of different lengths. A burette 205 is installed between the two fixed plates 204, and a liquid storage ball 206 is fixedly installed on the top of the burette 205. Excess reagents can be stored inside the liquid storage ball 206, reducing the trouble of frequently adding reagents and improving experimental efficiency. A burette tip 207 is installed at the bottom of the burette 205, and a rubber hose 208 is sleeved on the surface of the burette tip 207. The rubber hose 208 can not only protect the burette tip 207, but also adopts a detachable design, which is convenient for the staff to remove the entire rubber hose 208 from the burette tip 207 for cleaning, and the angle at which the reagents fall can be adjusted, which is convenient for the experimental work. The tray 209 is fixedly installed on the top of the rotating disk 201. There are multiple trays 209, and conical flasks 210 are placed inside the multiple trays 209. The experimenter can manually rotate the rotating disk 201 to switch different The conical flask 210 is moved to the titration position to support batch operation. A sliding ring 211 is fixedly installed on the top of each of the two fixing plates 204. A threaded hole 212 is provided on the surface of the sliding ring 211. A bolt 213 is installed on the internal thread of the threaded hole 212. A first rotating handle 214 is fixedly installed on the side of the bolt 213. The user can drive the bolt 213 to rotate by rotating the first rotating handle 214, so as to fix the position of the two fixing plates 204 on the main rod 202. A first fixing hole 215 is provided on the surface of the top fixing plate 204, and a second fixing hole 216 is provided on the surface of the bottom fixing plate 204. The first fixing hole 215 and the second fixing hole 216 both run through the entire fixing plate 204. The first fixing hole 215 can be used for The burette 205 is fixed, and the second fixing hole 216 can fix the burette tip 207. When the burette 205 needs to be fixed, the burette 205 can be first inserted into the first fixing hole 215, and then the burette tip 207 is installed on the body of the burette 205, and then the bottom fixing plate 204 is slid upward to insert the burette tip 207 into the second fixing hole 216, so as to fix the burette tip 207. A plurality of first fixing holes 215 and second fixing holes 216 are provided. The plurality of first fixing holes 215 and second fixing holes 216 can be provided to place spare burettes 205 and burette tips 207. A liquid inlet pipe 217 is fixedly installed on the top of the liquid storage ball 206.A dust plug 218 is installed inside the liquid inlet pipe 217 to prevent dust from entering or reagents from splashing out. A titration control mechanism 3 is installed at the bottom of the burette 205. The bottom of the titration control mechanism 3 is detachably connected to the burette tip 207. The burette 205 is connected to the burette tip 207 through the titration control mechanism 3. The rubber hose 208 is arranged just above the conical flask 210. The titration control mechanism 3 can control the titration speed.

[0023] Reference Figure 1-Figure 9The present embodiment further proposes that the titration control mechanism 3 includes a mounting tube 301, which is fixedly mounted on the bottom of the burette 205. The mounting tube 301 and the burette 205 are detachably mounted for easy cleaning. The bottom of the mounting tube 301 is detachably connected to the burette tip 207. The mounting tube 301 is connected to the burette 205 and the burette tip 207. A piston 302 is slidably mounted inside the mounting tube 301. A first threaded rod 303 is fixedly mounted on the side of the piston 302. The first threaded rod 303 penetrates the outside of the mounting tube 301 and is slidably connected to the mounting tube 301. A first motor 304 is fixedly mounted on the bottom of the bottom fixing plate 204. A first rotating shaft 30 is fixedly mounted on the output end of the first motor 304. 5. The first rotating shaft 305 passes through the top of the bottom fixed plate 204, and the first rotating shaft 305 is rotatably connected with the bottom fixed plate 204. A convex plate 306 is fixedly installed on the top of the first rotating shaft 305, and a support plate 307 is fixedly installed on the top of the bottom fixed plate 204. A sliding column 308 is slidably installed on the side of the support plate 307. There are two sliding columns 308. Push plates 309 are fixedly installed on the sides of the two sliding columns 308. Springs 310 are sleeved on the surfaces of the two sliding columns 308. The springs 310 are arranged between the support plate 307 and the push plate 309. When the first motor 304 is started, the first rotating shaft 305 can be driven to rotate. The rotating first rotating shaft 305 can drive the convex plate 306 to rotate. The rotation of plate 306 can push push plate 309, so as to squeeze spring 310 and make sliding column 308 slide toward the inside of support plate 307. When convex plate 306 rotates to a position where it does not contact push plate 309, push plate 309 returns to its original position under the action of spring 310. A mounting plate 322 is fixedly installed on the side of support plate 307, a slide rail 311 is fixedly installed on the top of mounting plate 322, a sliding plate 312 is slidably installed inside the slide rail 311, a first tooth plate 313 is fixedly installed on the top of sliding plate 312, a second tooth plate 314 is fixedly installed on the side of sliding plate 312, a second rotating shaft 315 is rotatably installed on the top of mounting plate 322, and the second rotating shaft 315 passes through mounting plate 322. The bottom of 322, the top of the second rotating shaft 315 is fixedly installed with a first gear 316, the first gear 316 is meshed with the second tooth plate 314, the side of the push plate 309 is fixedly installed with a U-shaped plate 317, the inner side of the U-shaped plate 317 is provided with a tooth groove 318, the bottom of the second rotating shaft 315 is fixedly installed with a second gear 319, the second gear 319 is meshed with the tooth groove 318, the side of the first threaded rod 303 is fixedly installed with a limit plate 320, the side of the mounting tube 301 is rotatably installed with a third gear 321, the third gear 321 is threadedly connected with the first threaded rod 303, and the third gear 321 is meshed with the first tooth plate 313. When the push plate 309 reciprocates, it can drive the U-shaped plate 317 to move back and forth.In this way, the tooth groove 318 can be driven to move, and then the second gear 319 can be driven to rotate, and the rotation of the second gear 319 can drive the second rotating shaft 315 to rotate, and the rotation of the second rotating shaft 315 can drive the first gear 316 to rotate, and the rotation of the first gear 316 can drive the second tooth plate 314 to move back and forth, and then the sliding plate 312 can be driven to move back and forth inside the sliding rail 311, and the back and forth sliding of the sliding plate 312 can drive the first tooth plate 313 to reciprocate, so as to drive the third gear 321 to rotate back and forth, so that the first The threaded rod 303 performs reciprocating motion, thereby driving the piston 302 to perform reciprocating motion inside the mounting tube 301. The piston 302 can block the bottom of the burette 205. When the piston 302 moves to the rightmost side of the mounting tube 301, the burette 205 can be completely blocked, so that the reagent no longer drips. When the piston 302 moves to the leftmost side of the mounting tube 301, the reagent inside the burette 205 can drip smoothly. Therefore, the dripping speed can be controlled by controlling the moving speed of the piston 302 inside the mounting tube 301, thereby realizing precise titration speed control.

[0024] Reference Figure 1-Figure 9, the present embodiment further proposes that a reaction mechanism 4 is installed inside the main rod 202, the reaction mechanism 4 includes a mounting cavity 401, the mounting cavity 401 is opened at the bottom of the main rod 202, a mounting column 402 is fixedly installed inside the mounting cavity 401, a second motor 403 is fixedly installed inside the mounting column 402, a rotating plate 404 is fixedly installed at the output end of the second motor 403, the second motor 403 can drive the rotating plate 404 to rotate, a fixing groove 405 is opened on the top of the rotating plate 404, a second threaded rod 406 is rotatably installed inside the fixing groove 405, a third rotating shaft 407 is rotatably installed on the side of the rotating plate 404, a second rotating handle 408 is fixedly installed on the end of the third rotating shaft 407, and the third rotating shaft 407 is connected to the third rotating shaft 407. The two threaded rods 406 are fixedly connected, and a threaded block 423 is threadedly installed on the surface of the second threaded rod 406, and a rotating block 424 is rotatably installed on the top of the threaded block 423. When the user rotates the second rotating handle 408, the third rotating shaft 407 can be driven to rotate, and the rotating third rotating shaft 407 can drive the second threaded rod 406 to rotate, thereby changing the position of the threaded block 423 on the surface of the second threaded rod 406. A mounting frame 409 is fixedly installed on the surface of the mounting column 402, and a first sliding rod 410 is installed inside the mounting frame 409. A bottom block 411 is slidably installed on the surface of the first sliding rod 410, and a mounting cylinder 412 is fixedly installed on the top of the bottom block 411. The side of the rotating block 424 is fixedly installed There is a fixed column 413, the fixed column 413 is slidably connected with the installation cylinder 412, the end of the fixed column 413 is fixedly installed with an elastic rubber 414, and the end of the elastic rubber 414 is fixedly installed with a first fixed ring 415. When the rotating plate 404 rotates, the rotation of the rotating plate 404 can drive the rotating block 424 to perform a circular motion, and then drive the installation cylinder 412 to slide on the surface of the fixed column 413, and also can make the bottom block 411 slide on the surface of the first sliding rod 410, and then drive the first fixed ring 415 to perform a circular motion. The first fixed ring 415 can be sleeved on the surface of the conical flask 210. The circular motion of the first fixed ring 415 can make the conical flask 210 shake, and through The second rotating handle 408 is turned to adjust the shaking amplitude of the conical flask 210. A support plate 416 is fixedly installed on the top of the first fixing ring 415, and a second fixing ring 417 is fixedly installed on the side of the support plate 416. A photoelectric sensor 418 is fixedly installed on the bottom of the support plate 416. The photoelectric sensor 418 can observe the flow rate of the reagent. The photoelectric sensor 418 is set with a threshold. When the flow rate detected by the photoelectric sensor 418 reaches this threshold, it will be activated immediately. A vertical plate 419 is fixedly installed on the top of the support plate 416, and an electric telescopic rod 420 is fixedly installed on the side of the vertical plate 419. The telescopic end of the electric telescopic rod 420 is fixedly installed with a squeezing plate 421. The top of the second fixing ring 417 is fixedly installed with a side plate 422.When the first fixing ring 415 performs circular motion, the support plate 416 can be driven to perform circular motion, and then the second fixing ring 417 can be driven to perform circular motion. The second fixing ring 417 is sleeved on the surface of the rubber hose 208. The movement of the second fixing ring 417 can drive the rubber hose 208 to move, so that the rubber hose 208 can always be kept above the conical flask 210 to prevent the splashing of the reagent. At the same time, when the photoelectric sensor 418 detects that the speed of the reagent flowing out of the rubber hose 208 is out of control, the electric telescopic rod 420 can be immediately started, so that the squeezing plate 421 can squeeze the rubber hose 208 to stop the reagent from flowing out.

[0025] Specifically, the working process or working principle of the preventive medicine experiment titration auxiliary device is as follows: first, the top fixing plate 204 is fixed to the surface of the main rod 202 by bolts 213, and then the burette 205 is inserted into the first fixing hole 215, and then the burette tip 207 is installed on the body of the burette 205, and then the bottom fixing plate 204 is slid upward to insert the burette tip 207 into the second fixing hole 216, and then the bottom fixing plate 204 is fixed to fix the burette tip 207, and then the reagent is added to the inside of the burette 205 through the liquid inlet tube 217.

[0026] Then, the first motor 304 is started. When the first motor 304 is started, the first rotating shaft 305 can be driven to rotate. The rotating first rotating shaft 305 can drive the convex plate 306 to rotate. The rotation of the convex plate 306 can push the push plate 309, thereby squeezing the spring 310 to make the sliding column 308 slide toward the inside of the support plate 307. When the convex plate 306 rotates to a position where it does not contact the push plate 309, the push plate 309 is restored to its original position under the action of the spring 310. When the push plate 309 reciprocates, the U-shaped plate 317 can be driven to move back and forth, thereby driving the tooth groove 318 to move, and then the second gear 319 can be driven to rotate. The rotation of the second gear 319 can drive the second rotating shaft 315 to rotate. The rotation of the second rotating shaft 315 can drive the first gear 316 to rotate. The rotation of the first gear 316 can drive the second rotating shaft 315 to rotate. The second tooth plate 314 moves back and forth, which can drive the sliding plate 312 to move back and forth inside the slide rail 311, and the back and forth sliding of the sliding plate 312 can drive the first tooth plate 313 to perform reciprocating motion, thereby driving the third gear 321 to rotate back and forth, thereby making the first threaded rod 303 perform reciprocating motion, thereby driving the piston 302 to perform reciprocating motion inside the mounting tube 301, and the piston 302 can block the bottom of the burette 205. When the piston 302 moves to the rightmost side of the mounting tube 301, the burette 205 can be completely blocked, so that the reagent no longer drips, and when the piston 302 moves to the leftmost side of the mounting tube 301, the reagent inside the burette 205 can drip smoothly. Therefore, the dripping speed can be controlled by controlling the moving speed of the piston 302 inside the mounting tube 301, thereby achieving accurate titration speed control.

[0027] When the first motor 304 is started, the second motor 403 is also started at the same time, and the second motor 403 can drive the rotating plate 404 to rotate. When the rotating plate 404 rotates, the rotation of the rotating plate 404 can drive the rotating block 424 to perform a circular motion, thereby driving the mounting cylinder 412 to slide on the surface of the fixing column 413, and also can make the bottom block 411 slide on the surface of the first sliding rod 410, thereby driving the first fixing ring 415 to perform a circular motion, and the first fixing ring 415 can be sleeved on the surface of the conical flask 210. The circular motion of the first fixing ring 415 can make the conical flask 210 shake, and by rotating the second rotating handle 408, The shaking amplitude of the conical flask 210 is adjusted. When the first fixed ring 415 performs a circular motion, the support plate 416 can be driven to perform a circular motion, and then the second fixed ring 417 can be driven to perform a circular motion. The second fixed ring 417 is sleeved on the surface of the rubber hose 208. The movement of the second fixed ring 417 can drive the rubber hose 208 to move, so that the rubber hose 208 can always be kept above the conical flask 210 to prevent the splashing of the reagent. At the same time, when the photoelectric sensor 418 detects that the speed of the reagent flowing out of the rubber hose 208 is out of control, the electric telescopic rod 420 can be immediately started so that the squeezing plate 421 can squeeze the rubber hose 208 to stop the reagent from flowing out.

Claims

1. A preventive medicine experimental titration auxiliary device, comprising a chassis (1), characterized in that: A titration auxiliary mechanism (2) is installed on the top of the chassis (1), and the titration auxiliary mechanism (2) comprises: A rotating disk (201), the rotating disk (201) being rotatably mounted on the top of the chassis (1), a main rod (202) being fixedly mounted on the top of the chassis (1), the main rod (202) being rotatably connected to the rotating disk (201); A sliding groove (203), wherein the sliding groove (203) is formed on the surface of the main rod (202), a fixing plate (204) is slidably mounted inside the sliding groove (203), and two fixing plates (204) are provided; A burette (205), the burette (205) being mounted between two fixed plates (204), a liquid storage ball (206) being fixedly mounted on the top of the burette (205), a burette tip (207) being mounted on the bottom of the burette (205), and a rubber hose (208) being sleeved on the surface of the burette tip (207); A tray (209), wherein the tray (209) is fixedly mounted on the top of the rotating disk (201), and a plurality of trays (209) are provided, and a conical flask (210) is placed inside each of the plurality of trays (209).

2. A preventive medicine experimental titration auxiliary device according to claim 1, characterized in that: A sliding ring (211) is fixedly installed on the top of the two fixing plates (204); a threaded hole (212) is provided on the surface of the sliding ring (211); a bolt (213) is installed on the internal thread of the threaded hole (212); a first rotating handle (214) is fixedly installed on the side of the bolt (213); a first fixing hole (215) is provided on the surface of the top fixing plate (204); a second fixing hole (216) is provided on the surface of the bottom fixing plate (204); and the first fixing hole (215) and the second fixing hole (216) both penetrate the entire fixing plate (204).

3. A preventive medicine experimental titration auxiliary device according to claim 2, characterized in that: A liquid inlet pipe (217) is fixedly mounted on the top of the liquid storage ball (206), a dust plug (218) is mounted inside the liquid inlet pipe (217), a titration control mechanism (3) is mounted on the bottom of the burette (205), the bottom of the titration control mechanism (3) is detachably connected to the burette tip (207), the burette (205) is connected to the burette tip (207) via the titration control mechanism (3), and the rubber hose (208) is arranged directly above the conical flask (210).

4. A preventive medicine experimental titration auxiliary device according to claim 3, characterized in that: The titration control mechanism (3) comprises a mounting tube (301), wherein the mounting tube (301) is fixedly mounted on the bottom of a burette (205), the bottom of the mounting tube (301) is detachably connected to a burette tip (207), the mounting tube (301) is in communication with the burette (205) and the burette tip (207), a piston (302) is slidably mounted inside the mounting tube (301), a first threaded rod (303) is fixedly mounted on the side of the piston (302), and the first threaded rod (303) passes through the outside of the mounting tube (301) and is slidably connected to the mounting tube (301).

5. A preventive medicine experimental titration auxiliary device according to claim 4, characterized in that: A first motor (304) is fixedly mounted on the bottom of the fixing plate (204) at the bottom, a first rotating shaft (305) is fixedly mounted on the output end of the first motor (304), the first rotating shaft (305) passes through the top of the fixing plate (204) at the bottom, the first rotating shaft (305) is rotatably connected to the fixing plate (204) at the bottom, a convex plate (306) is fixedly mounted on the top of the first rotating shaft (305), a support plate (307) is fixedly mounted on the top of the fixing plate (204) at the bottom, a sliding column (308) is slidably mounted on the side of the support plate (307), two sliding columns (308) are provided, and push plates (309) are fixedly mounted on the sides of the two sliding columns (308), and springs (310) are sleeved on the surfaces of the two sliding columns (308), and the springs (310) are provided between the support plate (307) and the push plate (309).

6. A preventive medicine experimental titration auxiliary device according to claim 5, characterized in that: A mounting plate (322) is fixedly mounted on the side of the support plate (307), a slide rail (311) is fixedly mounted on the top of the mounting plate (322), a sliding plate (312) is slidably mounted inside the slide rail (311), a first tooth plate (313) is fixedly mounted on the top of the sliding plate (312), a second tooth plate (314) is fixedly mounted on the side of the sliding plate (312), a second rotating shaft (315) is rotatably mounted on the top of the mounting plate (322), the second rotating shaft (315) passes through the bottom of the mounting plate (322), a first gear (316) is fixedly mounted on the top of the second rotating shaft (315), and the first gear (316) is meshed with the second gear plate (314).

7. A preventive medicine experimental titration auxiliary device according to claim 6, characterized in that: A U-shaped plate (317) is fixedly mounted on the side of the push plate (309), a tooth groove (318) is provided on the inner side of the U-shaped plate (317), a second gear (319) is fixedly mounted on the bottom of the second rotating shaft (315), the second gear (319) is meshed with the tooth groove (318), a limiting plate (320) is fixedly mounted on the side of the first threaded rod (303), a third gear (321) is rotatably mounted on the side of the mounting tube (301), the third gear (321) is threadedly connected to the first threaded rod (303), and the third gear (321) is meshed with the first tooth plate (313).

8. A preventive medicine experimental titration auxiliary device according to claim 7, characterized in that: A reaction mechanism (4) is installed inside the main rod (202), and the reaction mechanism (4) comprises a mounting cavity (401). The mounting cavity (401) is opened at the bottom of the main rod (202), a mounting column (402) is fixedly installed inside the mounting cavity (401), a second motor (403) is fixedly installed inside the mounting column (402), a rotating plate (404) is fixedly installed at the output end of the second motor (403), a fixing groove (405) is opened at the top of the rotating plate (404), and a second threaded rod (406) is rotatably installed inside the fixing groove (405).

9. A preventive medicine experimental titration auxiliary device according to claim 8, characterized in that: A third rotating shaft (407) is rotatably mounted on the side of the rotating plate (404); a second rotating handle (408) is fixedly mounted on the end of the third rotating shaft (407); the third rotating shaft (407) is fixedly connected to a second threaded rod (406); a threaded block (423) is threadedly mounted on the surface of the second threaded rod (406); and a rotating block (424) is rotatably mounted on the top of the threaded block (423).

10. A preventive medicine experimental titration auxiliary device according to claim 9, characterized in that: A mounting frame (409) is fixedly mounted on the surface of the mounting column (402), a first sliding rod (410) is mounted inside the mounting frame (409), a bottom block (411) is slidably mounted on the surface of the first sliding rod (410), a mounting tube (412) is fixedly mounted on the top of the bottom block (411), a fixing column (413) is fixedly mounted on the side of the rotating block (424), the fixing column (413) is slidably connected to the mounting tube (412), an elastic rubber (414) is fixedly mounted on the end of the fixing column (413), and a fixing member (414) is fixedly mounted on the end of the elastic rubber (414). A first fixing ring (415), a support plate (416) is fixedly mounted on the top of the first fixing ring (415), a second fixing ring (417) is fixedly mounted on the side of the support plate (416), a photoelectric sensor (418) is fixedly mounted on the bottom of the support plate (416), a vertical plate (419) is fixedly mounted on the top of the support plate (416), an electric telescopic rod (420) is fixedly mounted on the side of the vertical plate (419), an extrusion plate (421) is fixedly mounted on the telescopic end of the electric telescopic rod (420), and a side plate (422) is fixedly mounted on the top of the second fixing ring (417).

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