Liquid adding and diluting device for medical clinical laboratory

Abstract

The invention relates to the field of medical instruments, in particular to a liquid adding and diluting device for a medical clinical laboratory. According to the device, a solution can be rapidly and fully stirred, so that the solution is more uniformly and fully mixed, blockage caused by residual impurities of the solution is effectively avoided, and the solution dilution efficiency and the accuracy of an inspection result are effectively improved. The device comprises a support frame, a motor, a dilution barrel, a liquid adding mechanism and the like, a motor is fixedly connected to the top of the supporting frame, a dilution barrel is fixedly connected to the bottom of the inner wall of the supporting frame, and a liquid adding mechanism is arranged on the dilution barrel. Purified water is introduced into the dilution barrel, then different doses of solutions are added into the two liquid adding barrels, a motor drives a rotating shaft to rotate to drive a rotating shaft to rotate, and a plurality of arc-shaped rods and square rods on the rotating shaft rotate to uniformly stir the liquid in the dilution barrel, so that the concentration of the solutions is reduced, and the concentration of the solutions is reduced. Furthermore, the solution can be rapidly and uniformly diluted, and the solution dilution efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a liquid dilution device for use in medical laboratories. Background Technology

[0002] In routine, physiological, and biochemical tests in medical laboratory procedures, solutions often need to be diluted before processing and analysis. Purified water or other solvents are generally used to reduce the concentration of the solution. Purified water is the most commonly used solvent and has good solubility for many substances.

[0003] Existing liquid dilution devices have a limited range of stirring during the solution dilution process, which can easily lead to slow solution dilution speed and insufficient stirring in some areas. This can result in localized areas with excessively high or low liquid concentrations, leading to poor liquid mixing and large deviations in the final solution concentration, which affects the final test results. In addition, due to insufficient stirring, liquid sedimentation can cause the inner wall of the pipe to harden, resulting in blockages in pipes and other channels. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned technical problems by providing a liquid dilution device for medical testing, which can quickly and thoroughly stir the solution, making the solution more uniform and fully mixed, effectively avoiding the blockage caused by residual impurities in the solution, thereby effectively improving the solution dilution efficiency and the accuracy of test results.

[0005] The technical solution of the present invention is: a liquid addition and dilution device for medical laboratory use, comprising a support frame, a motor, a dilution tank, a liquid addition mechanism and a stirring mechanism. The motor is fixedly connected to the top of the support frame, and the dilution tank is fixedly connected to the bottom of the inner wall of the support frame. A water inlet pipe is provided at the top of the dilution tank, and a faucet is provided on one side of the lower part of the dilution tank. The liquid addition mechanism and the stirring mechanism are provided on the dilution tank.

[0006] Furthermore, the liquid addition mechanism includes a rotating shaft, a driving gear, a liquid addition tank, a first nut, a second nut, a driven gear, a first screw, and a second screw. The rotating shaft is fixedly connected to the output shaft of the motor. The rotating shaft is rotatably connected to the support frame. The driving gear is fixedly connected to the bottom end of the rotating shaft. Two liquid addition tanks are fixedly connected to the top of the dilution tank. Both liquid addition tanks are equipped with inlet tubes and have several slits at their bottoms. One liquid addition tank is rotatably connected to a first nut, and the other liquid addition tank is rotatably connected to a second screw. The second nut has two driven gears fixedly connected to it. The driving gear meshes with both driven gears. The first nut is threadedly connected to a screw rod, and the bottom end of the screw rod is provided with a disc. The disc of the screw rod is rotatably connected to one of the liquid filling tanks. The screw rod is slidably connected to the support frame. The second nut has a screw rod threadedly connected to it. The bottom end of the screw rod is provided with a disc. The disc of the screw rod is rotatably connected to another liquid filling tank. The screw rod is slidably connected to the support frame.

[0007] Furthermore, the stirring mechanism includes a rotating shaft, a rotating disk, a support ring, and a compression spring. The rotating shaft is fitted onto the dilution tank. The rotating shaft is provided with several arc-shaped rods and square rods, with two arc-shaped rods forming a group. The rotating shaft is slidably connected to the rotating shaft. The rotating disk is fixedly connected to the top of the rotating shaft. A support ring is fixedly connected between the two liquid addition tanks. The rotating shaft passes through the support ring. The rotating disk is located above the support ring and contacts the support ring. A compression spring is connected between the rotating shafts.

[0008] Furthermore, it also includes a reciprocating mechanism. The support frame is equipped with a reciprocating mechanism, which includes a cylinder, a rotating screw, a driven gear, a limiting rod, and a pressing disc. Two cylinders are fixedly connected to the upper bottom side of the support frame. The two cylinders are symmetrically arranged and are connected to the dilution tank. A rotating screw is rotatably connected to each of the two cylinders. A driven gear is fixedly connected to the top of each of the two rotating screws. The driven gear meshes with the driven gear. A limiting rod is fixedly connected inside each of the two cylinders. A pressing disc is threadedly connected to each of the two rotating screws. The pressing disc is slidably connected to the limiting rod.

[0009] Furthermore, it also includes a conveying mechanism. The stirring mechanism is equipped with a conveying mechanism, which includes a gear ring, a spiral disk, and a rotating gear. The gear ring is fixedly connected to the bottom of the inner wall of the dilution tank. A spiral disk is rotatably connected between each set of arc-shaped rods of the rotating shaft. A rotating gear is fixedly connected to the bottom of each spiral disk. Each rotating gear meshes with the gear ring.

[0010] Furthermore, it also includes rotating frames and compression springs. The rotating frames are slidably connected to several square rods at the bottom of the rotating shaft. Each of the rotating frames is in contact with the inner wall of the dilution tank. Each of the rotating frames is connected to three compression springs between itself and the square rod at the bottom of the rotating shaft.

[0011] Furthermore, it also includes rotating columns and rotating blades. Three rotating columns are rotatably connected between several square rods of the rotating shaft, and several rotating blades are fixedly connected to each of the three rotating columns.

[0012] The beneficial effects are as follows: 1. This invention involves adding purified water into a dilution tank, and then adding different doses of solution into two separate addition tanks. Simultaneously, a motor drives a rotating shaft to rotate, and several arc-shaped and square rods on the rotating shaft rotate to uniformly stir the liquid in the dilution tank, thereby reducing the solution concentration and allowing the solution to be diluted by purified water. The rotation of the rotating disk will squeeze the rotating disk upward, which in turn causes the rotating shaft to slide up and down, allowing for more comprehensive and uniform stirring of the liquid in the dilution tank, ensuring thorough mixing, and thus enabling rapid and uniform dilution of the solution, improving the solution dilution efficiency.

[0013] 2. This invention utilizes the rotation of the driven gear to drive the rotation of the passive gear, causing the extrusion plate to move up and down reciprocally. The upward movement of the extrusion plate draws air from the cylinder, creating a negative pressure that draws some liquid from the dilution tank into the two cylinders. As the extrusion plate moves downward, it squeezes the liquid in the cylinder, causing it to slowly release back into the dilution tank under the pressure of the extrusion plate. This process is repeated, resulting in repeated suction and release of liquid from the dilution tank. This creates a simultaneous stirring and addition of liquid, allowing the solution and purified water to mix fluidly, enhancing the mixing effect, improving the efficiency of solution dilution, and increasing the accuracy of test results.

[0014] 3. This invention uses a rotating shaft to drive the spiral disk and rotating frame to rotate together. This allows the spiral disk to rotate at a higher speed to stir the liquid, effectively preventing dead zones and localized liquid stagnation. The rotating frame can scrape off liquid impurities adhering to the inner wall of the dilution tank, thus avoiding liquid impurity residue. At the same time, the up-and-down movement of the rotating shaft drives the spiral disk and rotating frame to move up and down together, making the liquid more uniform and thorough in mixing. The up-and-down movement of the rotating frame can more comprehensively scrape off liquid impurities adhering to the inner wall of the dilution tank, more effectively preventing liquid impurity residue from causing blockage, and further improving the solution dilution efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0016] Figure 2This is a schematic diagram of the second three-dimensional structure of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the liquid addition mechanism, stirring mechanism, and reciprocating mechanism of the present invention.

[0018] Figure 4 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0019] Figure 5 This is a cross-sectional three-dimensional structural diagram of the liquid addition mechanism and stirring mechanism of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of the conveying mechanism of the present invention.

[0021] Figure 7 This is a partial cross-sectional three-dimensional structural schematic diagram of the reciprocating mechanism of the present invention.

[0022] Figure 8 This is a partial three-dimensional structural diagram of the present invention.

[0023] In the attached diagram, the following are the reference numerals: 1-support frame, 2-motor, 3-dilution tank, 41-rotating shaft, 42-drive gear, 43-liquid addition tank, 44-nut one, 45-nut two, 46-driven gear, 47-screw one, 48-screw two, 51-rotating shaft, 52-rotating disc, 53-support ring, 54-compression spring, 61-cylinder, 62-rotating screw, 63-passive gear, 64-limiting rod, 65-compression disc, 71-gear ring, 72-rotating gear, 73-spiral disc, 8-rotating frame, 81-compression spring, 9-rotating column, 91-rotating blade. Detailed Implementation

[0024] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art, and will not be described in detail here.

[0025] Example 1: A liquid addition and dilution device for medical laboratory use, such as... Figures 1-5 As shown, the device includes a support frame 1, a motor 2, a dilution tank 3, a liquid adding mechanism, and a stirring mechanism. The motor 2 is bolted to the top of the support frame 1, and the dilution tank 3 is riveted to the bottom of the inner wall of the support frame 1. The dilution tank 3 has a cylindrical structure, with a water inlet pipe at the top and a faucet on one side of the lower part of the dilution tank 3 for dispensing the diluted liquid. The dilution tank 3 is equipped with a liquid adding mechanism and a stirring mechanism. The liquid adding mechanism is used to add the liquid to be diluted into the dilution tank 3, and the stirring mechanism is used to stir the liquid inside the dilution tank 3.

[0026] The liquid addition mechanism includes a rotating shaft 41, a driving gear 42, a liquid addition tank 43, a first nut 44, a second nut 45, a driven gear 46, a first screw 47, and a second screw 48. The rotating shaft 41 is bolted to the output shaft of the motor 2. The rotating shaft 41 is vertically arranged and rotatably connected to the support frame 1. The bottom end of the rotating shaft 41 is connected to the driving gear 42 via a flat key. Two liquid addition tanks 43 are welded to the top of the dilution tank 3. The two liquid addition tanks 43 are hollow structures and each liquid addition tank 43 is equipped with a medicine inlet tube and has several slits at the bottom. One liquid addition tank 43 is rotatably connected to a first nut 44, and the other liquid addition tank 43 is rotatably connected to a second nut 45. The first nut 44 and the second nut 45... 5. Each of the components is connected to a driven gear 46 via a flat key. The driving gear 42 meshes with both driven gears 46, and the driving gear 42 is located between the two driven gears 46. The nut 44 is connected to a screw 47 via a thread. The bottom end of the screw 47 is provided with a disc. The disc of the screw 47 is rotatably connected to one of the liquid filling tanks 43, and the disc is located inside one of the liquid filling tanks 43. The screw 47 is slidably connected to the support frame 1. The nut 45 is connected to a screw 48 via a thread. The bottom end of the screw 48 is provided with a disc. The disc of the screw 48 is rotatably connected to another liquid filling tank 43, and the disc is located inside the other liquid filling tank 43. The screw 48 is slidably connected to the support frame 1.

[0027] The stirring mechanism includes a rotating shaft 51, a rotating disk 52, a support ring 53, and a compression spring 54. The rotating shaft 51 is sleeved on the dilution tank 3. The rotating shaft 51 is provided with several arc-shaped rods and square rods, with two arc-shaped rods forming a group. The arc-shaped rods and square rods on the rotating shaft 51 are all located inside the dilution tank 3. The rotating shaft 51 is slidably connected to the rotating shaft 41. The rotating disk 52 is bolted to the top of the rotating shaft 51. The support ring 53 is bolted between the two liquid addition tanks 43. The rotating shaft 51 passes through the support ring 53. The rotating disk 52 is located above the support ring 53 and is in contact with the support ring 53. The compression spring 54 is connected between the rotating shaft 51 and the rotating shaft 41 through a hook. The compression spring 54 is sleeved on the rotating shaft 41.

[0028] In practical applications, the operator first adds purified water into the dilution tank 3 through the inlet pipe. Once the dilution tank 3 contains a certain amount of purified water, the operator adds different doses of solution to the two addition tanks 43 according to the required dilution ratio. Then, the operator starts the motor 2. The output shaft of the motor 2 rotates, which drives the rotating shaft 41 to rotate. The rotating shaft 41 rotates, which drives the drive gear 42 to rotate. The drive gear 42 rotates, which drives the two driven gears 46 to rotate. The two driven gears 46 rotate, which respectively drive the first nut 44 and the second nut 45 to rotate. The rotation of the first nut 44 drives the first screw 47 to move slowly downward. The slow downward movement of the first screw 47 causes the disc to slowly... The device moves slowly downwards, increasing the pressure in one of the liquid addition tanks 43, causing the solution in that tank to be slowly squeezed into the dilution tank 3 through several gaps. The rotation of nut 45 causes screw 48 to move rapidly downwards, which in turn causes disc 2 to move rapidly downwards, increasing the pressure in the other liquid addition tank 43 and causing the solution in that tank to be quickly squeezed into the dilution tank 3 through several gaps. Simultaneously, the rotation of shaft 41 causes shaft 51 to rotate, which in turn causes several arc-shaped rods, square rods, and rotating disc 52 to rotate together. The rotation of the arc-shaped and square rods on shaft 51 then... The solution is uniformly stirred, thereby reducing its concentration and allowing it to be diluted with purified water. As the rotating disk 52 rotates, it comes into contact with the support ring 53. This contact compresses the rotating disk 52, causing it to move upwards. This upward movement of the rotating disk 52 drives the rotating shaft 51 to slide upwards, compressing the compression spring 54. As the rotating disk 52 continues to rotate, it disengages from the support ring 53. The return of the compression spring 54 causes the rotating shaft 51 to return downwards, which in turn causes the rotating disk 52 to return downwards. This process repeats, resulting in the rotating shaft 51 sliding up and down repeatedly. This allows for more thorough and uniform stirring of the liquid in the dilution tank 3, ensuring complete mixing and rapid dilution of the solution, thus improving its dilution efficiency. In terms of efficiency, after the solution is diluted, the operator turns off motor 2 and then turns on the tap of dilution tank 3. The diluted solution will flow out through the tap of dilution tank 3. Then the operator turns off the tap on dilution tank 3 and turns on motor 2. The output shaft of motor 2 reverses, which drives the rotating shaft 41 to reverse. The reverse rotation of rotating shaft 41 drives the drive gear 42 to reverse. The reverse rotation of drive gear 42 drives the two driven gears 46 to reverse. The rotation of the two driven gears 46 will drive nut one 44 and nut two 45 to reverse respectively. The reverse rotation of nut one 44 will drive screw one 47 to move upward and reset. The reverse rotation of nut two 45 will drive screw two 48 to move upward and reset. Finally, the operator turns off motor 2.

[0029] Example 2: Based on Example 1, such as Figures 1-7As shown, it also includes a reciprocating mechanism. The support frame 1 is equipped with a reciprocating mechanism, which is used to mix purified water and solution in a fluid manner. The reciprocating mechanism includes a cylinder 61, a rotating screw 62, a driven gear 63, a limiting rod 64, and a squeezing disc 65. Two cylinders 61 are connected to the bottom upper side of the support frame 1 by rivets. The two cylinders 61 are symmetrically arranged and both cylinders 61 are connected to the dilution tank 3. The rotating screw 62 is rotatably connected to each of the two cylinders 61. The top of each rotating screw 62 is connected to the driven gear 63 by a flat key. The two driven gears 63 are symmetrically arranged. The driven gear 46 meshes with the driven gear 63. The limiting rod 64 is welded inside each of the two cylinders 61. The two limiting rods 64 are vertically arranged. The squeezing disc 65 is threadedly connected to each of the two rotating screws 62. The squeezing disc 65 is located inside the cylinder 61 and is slidably connected to the limiting rod 64.

[0030] The rotation of the driven gear 46 drives the rotation of the driven gear 63, which in turn drives the rotating screw 62. The rotating screw 62 causes the squeezing disc 65 to move up and down reciprocally. When the squeezing disc 65 moves upward, it draws air out of the cylinder 61, creating a negative pressure inside the cylinder 61. This negative pressure draws some of the liquid from the dilution tank 3 into the two cylinders 61. When the squeezing disc 65 moves downward, it squeezes the liquid in the cylinder 61. Under the pressure of the squeezing disc 65, the liquid in the cylinder 61 is slowly released back into the dilution tank 3. This process is repeated, resulting in repeated intake and release of liquid in the dilution tank 3. This creates a simultaneous stirring and addition of liquid, allowing the solution and purified water to mix fluidly, enhancing the mixing effect, improving the efficiency of solution dilution, and increasing the accuracy of test results.

[0031] Example 3: Based on Example 2, such as Figures 4-6 As shown, it also includes a conveying mechanism. The stirring mechanism is equipped with a conveying mechanism, which is used to stir the liquid at a higher speed. The conveying mechanism includes a gear ring 71, a spiral disk 73, and a rotating gear 72. The bottom of the inner wall of the dilution tank 3 is bolted to the gear ring 71. The gear ring 71 has a ring structure. Each set of arc-shaped rods of the rotating shaft 51 is rotatably connected to a spiral disk 73. There are three spiral disks 73. The three spiral disks 73 are evenly spaced. The bottom of each of the three spiral disks 73 is connected to a rotating gear 72 by a flat key. All three rotating gears 72 mesh with the gear ring 71.

[0032] The rotation of the rotating shaft 51 drives several spiral disks 73 to rotate, which in turn drives rotating gears 72 to rotate. Each rotating gear 72 rotates along its own axis along the gear ring 71, which in turn drives the spiral disks 73 to rotate. The rotation of the spiral disks 73 allows for faster stirring of the liquid, effectively preventing dead zones and localized liquid stagnation. Simultaneously, the up-and-down reciprocating movement of the rotating shaft 51 drives several spiral disks 73 to move up and down together, which in turn drives the rotating gears 72 to move up and down. When the rotating gears 72 move upward, they disengage from the gear ring 71. The rotating gears 72 rotate under the power of the liquid, thereby making the liquid more uniform and thoroughly mixed, further improving the dilution efficiency.

[0033] Example 4: Based on Example 3, such as Figure 4 and Figure 8 As shown, it also includes a rotating frame 8 and a compression spring 81. The rotating frame 8 is slidably connected to several square rods at the bottom of the rotating shaft 51. There are three rotating frames 8. All three rotating frames 8 are in contact with the inner wall of the dilution tank 3. The three rotating frames 8 are vertically arranged. The three rotating frames 8 are connected to the bottom square rods of the rotating shaft 51 by hooks, and the compression springs 81 are sleeved on the rotating frames 8.

[0034] As the rotating shaft 51 rotates, it drives the rotating frame 8 to rotate. The rotation of the rotating frame 8 can scrape off liquid impurities adhering to the inner wall of the dilution tank 3, thereby avoiding the residue of liquid impurities. The up-and-down reciprocating movement of the rotating shaft 51 will drive the rotating frame 8 to move up and down reciprocatingly. When the rotating frame 8 moves upward, the compression spring 81 is stretched. When the rotating frame 8 moves downward to reset, the compression spring 81 is reset. The up-and-down reciprocating movement of the rotating frame 8 can more thoroughly scrape off liquid impurities adhering to the inner wall of the dilution tank 3, and can more effectively prevent liquid impurities from remaining and causing blockage, thereby more effectively making the liquid diluted evenly.

[0035] Example 5: Based on Example 4, such as Figure 8 As shown, it also includes rotating columns 9 and rotating blades 91. Three rotating columns 9 are rotatably connected between several square rods of the rotating shaft 51. The three rotating columns 9 are arranged vertically, and several rotating blades 91 are welded on each of the three rotating columns 9. The rotating blades 91 have a rectangular structure.

[0036] The rotation of the rotating shaft 51 will drive the rotating column 9 and the rotating blades 91 to rotate. At the same time, several rotating blades 91 will rotate under the power of the liquid. The rotation of several rotating blades 91 will increase the stirring speed of the liquid. The up-and-down reciprocating movement of the rotating shaft 51 will also drive several rotating blades 91 to move up and down reciprocatingly, thereby accelerating the stirring speed of the liquid more comprehensively, further accelerating the reduction of the solution concentration, and improving the efficiency of solution dilution.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A liquid addition and dilution device for medical laboratory use, characterized in that, It includes a support frame (1), a motor (2), a dilution tank (3), a liquid adding mechanism and a stirring mechanism. The motor (2) is fixedly connected to the top of the support frame (1), and the dilution tank (3) is fixedly connected to the bottom of the inner wall of the support frame (1). The dilution tank (3) is a cylindrical structure. A water inlet pipe is opened on the top of the dilution tank (3), and a faucet is provided on one side of the lower part of the dilution tank (3). The faucet is used to discharge the diluted liquid. The dilution tank (3) is equipped with a liquid adding mechanism and a stirring mechanism. The liquid adding mechanism is used to add the liquid to be diluted into the dilution tank (3), and the stirring mechanism is used to stir the liquid inside the dilution tank (3).

2. The liquid addition and dilution device for medical laboratory use according to claim 1, characterized in that, The liquid addition mechanism includes a rotating shaft (41), a driving gear (42), a liquid addition tank (43), a nut one (44), a nut two (45), a driven gear (46), a screw one (47), and a screw two (48). The rotating shaft (41) is fixedly connected to the output shaft of the motor (2). The rotating shaft (41) is rotatably connected to the support frame (1). The driving gear (42) is fixedly connected to the bottom end of the rotating shaft (41). Two liquid addition tanks (43) are fixedly connected to the top of the dilution tank (3). Both liquid addition tanks (43) are provided with a medicine inlet tube and have several slits at the bottom. Nut one (44) is rotatably connected to one of the liquid addition tanks (43), and nut two (45) is rotatably connected to the other liquid addition tank (43). 45), both the first nut (44) and the second nut (45) are fixedly connected to driven gears (46), the driving gear (42) meshes with both driven gears (46), the first nut (44) is connected to a screw rod (47) by a thread, the bottom end of the screw rod (47) is provided with a disc, the disc of the screw rod (47) is rotatably connected to one of the liquid filling tanks (43), the screw rod (47) is slidably connected to the support frame (1), the second nut (45) is connected to a screw rod (48) by a thread, the bottom end of the screw rod (48) is provided with a disc, the disc of the screw rod (48) is rotatably connected to another liquid filling tank (43), the screw rod (48) is slidably connected to the support frame (1).

3. The liquid addition and dilution device for medical laboratory use according to claim 2, characterized in that, The stirring mechanism includes a rotating shaft (51), a rotating disk (52), a support ring (53), and a compression spring (54). The rotating shaft (51) is sleeved on the dilution tank (3). The rotating shaft (51) is provided with several arc-shaped rods and square rods, and two arc-shaped rods form a group. The rotating shaft (51) is slidably connected to the rotating shaft (41). The rotating disk (52) is fixedly connected to the top of the rotating shaft (51). The support ring (53) is fixedly connected between the two liquid addition tanks (43). The rotating shaft (51) passes through the support ring (53). The rotating disk (52) is located above the support ring (53). The rotating disk (52) is in contact with the support ring (53). The compression spring (54) is connected between the rotating shaft (51) and the rotating shaft (41).

4. The liquid addition and dilution device for medical laboratory use according to claim 3, characterized in that, It also includes a reciprocating mechanism. The support frame (1) is provided with a reciprocating mechanism, which includes a cylinder (61), a rotating screw (62), a driven gear (63), a limiting rod (64), and a pressing plate (65). Two cylinders (61) are fixedly connected to the bottom upper side of the support frame (1). The two cylinders (61) are symmetrically arranged. Both cylinders (61) are connected to the dilution tank (3). The rotating screw (62) is rotatably connected to both cylinders (61). The driven gear (46) is fixedly connected to the top of both rotating screws (62). The driven gear (46) meshes with the driven gear (63). The limiting rod (64) is fixedly connected inside both cylinders (61). The pressing plate (65) is threadedly connected to both rotating screws (62). The pressing plate (65) is slidably connected to the limiting rod (64).

5. A liquid addition and dilution device for medical laboratory use according to claim 4, characterized in that, It also includes a conveying mechanism. The stirring mechanism is equipped with a conveying mechanism, which includes a gear ring (71), a spiral disk (73) and a rotating gear (72). The gear ring (71) is fixedly connected to the bottom of the inner wall of the dilution tank (3). A spiral disk (73) is rotatably connected between each set of arc rods of the rotating shaft (51). A rotating gear (72) is fixedly connected to the bottom of each spiral disk (73). Each rotating gear (72) meshes with the gear ring (71).

6. A liquid addition and dilution device for medical laboratory use according to claim 5, characterized in that, It also includes a rotating frame (8) and a compression spring (81). The rotating frame (8) is slidably connected to several square rods at the bottom of the rotating shaft (51). Several rotating frames (8) are in contact with the inner wall of the dilution tank (3). Three compression springs (81) are connected between the several rotating frames (8) and the square rods at the bottom of the rotating shaft (51).

7. A liquid addition and dilution device for medical laboratory use according to claim 6, characterized in that, It also includes rotating columns (9) and rotating blades (91). Three rotating columns (9) are rotatably connected between several square rods of the rotating shaft (51), and several rotating blades (91) are fixedly connected to the three rotating columns (9).

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