High-precision quantitative medicine taking electronic balance for electronic balance field

Abstract

The invention discloses a high-precision quantitative medicine taking electronic balance for the field of electronic balances, and relates to the technical field of electronic balances, the high-precision quantitative medicine taking electronic balance comprises an electronic balance measuring main body, a dehumidifier is arranged on the electronic balance measuring main body, and the dehumidifier is used for dehumidifying air in the electronic balance measuring main body. The electronic balance measuring main body is provided with a quantitative medicine conveying mechanism, and the quantitative medicine conveying mechanism is provided with a trace medicine conveying mechanism; through the arrangement of the dehumidifier, the humidity in the machine shell is pre-controlled before weighing, interference of the humidity on weighing is eliminated, and the accuracy of final mass reading is ensured; through cooperation of the quantitative medicine conveying mechanism and the trace medicine conveying mechanism, medicine can be rapidly conveyed to a measuring cup through a spiral blade, and when trace medicine conveying is needed, the medicine falling amount can be accurately controlled through a spiral groove of a trace medicine conveying screw; through the arrangement of the cleaning assembly and the cleaning assembly, the interiors of the medicine conveying cavity and the trace medicine conveying cavity can be automatically cleaned, and subsequent medicine is prevented from being polluted by residual medicine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic balance, in particular to a high-precision quantitative medicine taking electronic balance for the field of electronic balance. BACKGROUND

[0002] The electronic balance is a kind of measurement balance of electromagnetic force balance principle, the control system adjusts the size of the current, so that the electromagnetic force and the gravity of the object reach balance, and then the mass of the object is calculated by measuring the current required to generate balance, which has the characteristics of accurate and reliable weighing, rapid and clear display, and is equipped with automatic detection system, simple automatic calibration device and overload protection device; The electronic balance is widely used in scientific research and industrial production, especially in chemical laboratories and industrial manufacturing, it is a kind of commonly used weighing instrument; At present, the electronic balance for laboratory is very sensitive to environmental humidity, when the humidity is too high, the balance parts, especially the agate parts, are easy to absorb water, which leads to slow swing of the balance, easy corrosion of metal parts, and easy staining of optical mirror surface, thereby affecting the weighing accuracy; When taking samples, improper operation of the experimental personnel or the characteristics of the sample can easily lead to the decrease of the weighing accuracy; And the medicine delivery channel of the existing medicine delivery device is difficult to clean, and the residual medicine is easy to contaminate the subsequent sample; Therefore, it is necessary to design a high-precision quantitative medicine taking electronic balance for the field of electronic balance. SUMMARY

[0003] In view of the above technical problems, the technical scheme adopted by the present application is: a high-precision quantitative medicine taking electronic balance for the field of electronic balance, comprising an electronic balance measuring body, a dehumidifier is arranged on the electronic balance measuring body, the dehumidifier is used for dehumidifying the air in the electronic balance measuring body, a quantitative medicine delivery mechanism is arranged on the electronic balance measuring body, and a micro-medicine delivery mechanism is arranged on the quantitative medicine delivery mechanism. The quantitative medicine delivery mechanism comprises a lifting assembly, a medicine delivery cavity is arranged on the lifting assembly, the lifting assembly is used for adjusting the height of the medicine delivery cavity, a medicine delivery screw is rotatably installed in the inside of the medicine delivery cavity, medicine delivery spiral blades are arranged on the medicine delivery screw, medicine is delivered by rotating the medicine delivery screw, a cleaning assembly is arranged in the inside of the medicine delivery screw, the cleaning assembly is used for cleaning the inside of the medicine delivery cavity, and an opening is arranged at the end of the medicine delivery cavity.

[0004] Further, the micro drug delivery mechanism comprises an adjusting assembly, the bottom of the adjusting assembly is provided with a micro drug outlet, the bottom of the micro drug outlet is fixedly installed with a micro drug delivery cavity, the micro drug outlet is arranged at one end of the micro drug delivery cavity, the other end of the micro drug delivery cavity is provided with a drug outlet, the adjusting assembly can drive the micro drug outlet to move along the length direction of the drug delivery cavity, so that the micro drug outlet is in communication with the opening of the drug delivery cavity, a micro drug delivery screw is rotatably installed in the micro drug delivery cavity, the micro drug delivery screw is driven to rotate by the rotating assembly, a spiral groove is arranged on the micro drug delivery screw, and the micro drug delivery screw is cleaned by the cleaning assembly.

[0005] Further, the cleaning assembly comprises a linkage shaft, the linkage shaft is internally provided with a cavity, the cavity in the linkage shaft is in communication with the inside of the drug delivery screw, and a plurality of switch units are arranged on the linkage shaft.

[0006] Further, the switch unit comprises a circular table, the inclined surface of the circular table is in contact with the first end of the sliding rod, the second end of the sliding rod is fixedly installed with a sealing plate, the sealing plate is attached to the outer wall of the drug delivery screw, and the surface of the sealing plate is matched with the outer wall of the drug delivery screw, so that the medicine cannot accumulate around the sealing plate, a sealing spring is sleeved on the sliding rod, the first end of the sealing spring is fixedly installed on the sliding rod, the second end of the sealing spring is fixedly installed on the inner wall of the drug delivery screw, a through hole is arranged on the side wall of the drug delivery screw, the sliding rod is slidingly installed on the through hole of the side wall of the drug delivery screw, and the side wall of the sliding rod is provided with a vertical groove.

[0007] Further, the adjusting assembly comprises a horizontal moving unit, the bottom of the horizontal moving unit is fixedly installed with a connecting ring, the horizontal moving unit can drive the connecting ring to move along the length direction of the drug delivery cavity, the connecting ring is in communication with the micro drug outlet, the connecting ring can cover the opening at the end of the drug delivery cavity, one end of the connecting ring is fixedly installed with a blocking plate, and the blocking plate can block the opening of the drug delivery cavity.

[0008] Further, the rotating assembly comprises a micro drug delivery drive shaft, a micro drug delivery sliding block is arranged on the outer wall of the micro drug delivery drive shaft, the micro drug delivery sliding block is slidingly installed in the length direction of the micro drug delivery screw, a micro drug delivery gear two is fixedly installed on the outer wall of the micro drug delivery drive shaft, the micro drug delivery gear two is meshingly installed with the micro drug delivery gear one, and the micro drug delivery gear two is driven to rotate by the micro drug delivery gear one.

[0009] Further, the cleaning assembly comprises a telescopic unit and a connecting unit, the first end of the telescopic unit is in communication with the inside of the drug delivery screw, the second end of the telescopic unit is in communication with the micro drug delivery drive shaft, the first end of the telescopic unit is also connected with the linkage shaft, the linkage shaft is driven to move by the telescopic unit, and the connecting unit is used to make the micro drug delivery drive shaft and the micro drug delivery screw in communication.

[0010] Further, the telescopic unit comprises a connecting pipe, a trace medicine driving shaft is rotatably installed at a first end of the connecting pipe, an inner pipe is fixedly installed at a second end of the connecting pipe, a sliding block is arranged on an outer wall of the inner pipe, the sliding block on the outer wall of the inner pipe is slidably installed on an inner wall of a middle pipe, an end plate is fixedly installed at an end of the middle pipe, a through hole is arranged at a center position of the end plate, a water outlet is arranged at an eccentric position of the end plate, a linkage shaft is slidably installed on the through hole of the end plate, a connecting spring is fixedly installed on the end plate and the linkage shaft through a connecting plate, a sliding block is arranged on an outer wall of the middle pipe, the sliding block on the outer wall of the middle pipe is slidably installed on an inner wall of an outer pipe, the outer pipe is fixedly installed on an end cover, and the outer pipe is communicated with the medicine feeding screw.

[0011] Further, the connecting unit comprises a sliding frame, the sliding frame is slidably installed on the trace medicine cavity, a reset spring is arranged between the sliding frame and the trace medicine cavity, the reset spring is sleeved on the trace medicine driving shaft, a contact block is further arranged on the sliding frame, the contact block is in contact with the contact plate, a cleaning hole is arranged on a thread of the trace medicine screw, a connecting hole is arranged on the trace medicine driving shaft, after the contact block contacts the contact plate, the trace medicine driving shaft does not continue to move, the trace medicine screw continues to move, and thus the cleaning hole and the connecting hole are communicated.

[0012] Compared with the prior art, the present application has the following beneficial effects: (1) the present application sets the dehumidifier to pre-control the humidity in the casing before weighing, eliminate the interference of humidity on the weighing, and ensure the accuracy of the final quality reading; (2) the present application cooperates the quantitative medicine feeding mechanism and the trace medicine feeding mechanism, can quickly feed the medicine to the measuring cup through the spiral blade, and can accurately control the medicine dropping amount through the spiral groove of the trace medicine screw when the trace medicine feeding is needed; (3) the present application sets the cleaning assembly and the cleaning assembly, can automatically clean the inside of the medicine cavity and the trace medicine cavity, and prevent the residual medicine from polluting the subsequent medicine. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the present application.

[0014] Figure 2 It is a whole internal structure schematic view of the present application.

[0015] Figure 3 It is a structure schematic view of the quantitative medicine feeding mechanism of the present application.

[0016] Figure 4 It is a local structure schematic view of the quantitative medicine feeding mechanism of the present application. Figure 1

[0017] Figure 5 It is a local enlarged view of A in the present application. Figure 4

[0018] Figure 6 ​​Local structure diagram of the quantitative medicine delivery mechanism of the present application Figure 2 .

[0019] Figure 7 Figure 6 Local enlarged view at B.

[0020] Figure 8 Structure diagram of the micro-quantity medicine delivery mechanism of the present application

[0021] Figure 9 Local structure diagram of the micro-quantity medicine delivery mechanism of the present application

[0022] Figure 10 Local structure diagram of the micro-quantity medicine delivery mechanism of the present application Figure 9 Sectional view in direction C-C.

[0023] Figure 11 Sectional view in direction D-D. Figure 9

[0024] Sectional view in direction E-E. Figure 12 Figure 11 Local enlarged view at E.

[0025] The drawings show: 2 - dehumidifier; 101 - number display operation table; 102 - weight measuring platform; 103 - machine shell; 301 - lifting motor; 302 - lifting motor mounting plate; 303 - lifting lead screw; 304 - lifting sliding block; 305 - lifting sliding plate; 306 - baffle; 307 - feeding port; 308 - medicine delivery cavity; 309 - medicine delivery motor; 310 - medicine delivery motor support; 311 - medicine delivery gear one; 312 - medicine delivery gear two; 313 - medicine delivery connecting shaft; 314 - medicine delivery screw; 315 - medicine delivery spiral blade; 316 - linkage shaft; 317 - circular table; 318 - slide rod; 319 - sealing plate; 320 - sealing spring; 321 - linkage shaft support; 401 - fixed frame; 402 - adjusting lead screw; 403 - adjusting sliding block; 404 - adjusting motor mounting plate; 405 - adjusting motor; 406 - connecting ring; 407 - material blocking plate; 408 - micro-quantity medicine outlet; 409 - micro-quantity medicine delivery cavity; 410 - sliding frame; 411 - micro-quantity medicine delivery motor; 412 - micro-quantity medicine delivery gear one; 413 - micro-quantity medicine delivery gear two; 414 - micro-quantity medicine delivery driving shaft; 415 - sealing tube; 416 - micro-quantity medicine delivery screw; 417 - micro-quantity medicine delivery sliding block; 418 - connecting plate; 419 - connecting spring; 420 - end plate; 421 - middle tube; 422 - outer tube; 423 - inner tube; 424 - connecting tube; 425 - reset spring; 426 - contact plate; 427 - contact block; 428 - cleaning hole; 429 - connecting hole; 430 - end cover. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be further described below in combination with the drawings and through specific embodiments.​

[0027] Example: Figures 1-12 The high-precision quantitative drug dispensing electronic balance shown includes an electronic balance measuring body, a dehumidifier 2, a quantitative drug delivery mechanism, and a micro-drug delivery mechanism. The dehumidifier 2 is installed on the electronic balance measuring body and is connected to the electronic balance measuring body. The dehumidifier 2 is used to dehumidify the air inside the electronic balance measuring body. The quantitative drug delivery mechanism is installed on the electronic balance measuring body, and the micro-drug delivery mechanism is installed on the quantitative drug delivery mechanism.

[0028] The main body of the electronic balance includes a display operation table 101, a weighing platform 102, and a housing 103. The weighing platform 102 is installed on the display operation table 101, and the housing 103 is installed outside the weighing platform 102. A dehumidifier 2 is installed on the top of the housing 103. The dehumidifier 2 is connected to the interior of the housing 103, and a rectangular opening is provided on one side of the housing 103.

[0029] The quantitative drug delivery mechanism includes a lifting assembly, a cleaning assembly, a driving assembly, a feed inlet 307, a delivery chamber 308, a delivery screw 314, and delivery spiral blades 315. The lifting assembly is located on the side wall of the housing 103, and the delivery chamber 308 is fixedly installed on the lifting assembly. The lifting assembly is used to adjust the height of the delivery chamber 308. The delivery screw 314 is rotatably installed inside the delivery chamber 308, and the delivery screw 314 is provided with delivery spiral blades 315. The driving assembly drives the delivery screw 314 to rotate, thereby delivering the drug. The cleaning assembly is located inside the delivery screw 314 and is used to clean the inside of the delivery chamber 308. The feed inlet 307 is fixedly installed at one end of the delivery chamber 308, and the other end of the delivery chamber 308 is provided with an opening.

[0030] The lifting assembly includes a lifting motor 301, a lifting motor mounting plate 302, a lifting screw 303, a lifting slider 304, a lifting slide plate 305, and a baffle 306. The lifting motor 301 is fixedly mounted on the lifting motor mounting plate 302, which is fixedly mounted on the outer wall of the housing 103. The output shaft of the lifting motor 301 and the lifting screw 303 are fixedly mounted. Both ends of the lifting screw 303 are rotatably mounted on the lifting motor mounting plate 302. The lifting screw 303 and the lifting slider 304 are threaded together. The lifting slide plate 305 is fixedly mounted on the side of the lifting slider 304. The lifting slide plate 305 is slidably mounted at the rectangular opening of the housing 103. Baffles 306 are provided on both sides of the lifting slide plate 305 to block the rectangular opening of the housing 103.

[0031] The driving assembly comprises a medicine feeding motor 309, a medicine feeding motor support 310, a medicine feeding gear one 311, a medicine feeding gear two 312 and a medicine feeding connecting shaft 313. The medicine feeding motor support 310 is fixedly installed on the medicine feeding cavity 308. The medicine feeding motor support 310 is fixedly installed with the medicine feeding motor 309. The output shaft of the medicine feeding motor 309 is fixedly installed with the medicine feeding gear one 311. The medicine feeding gear one 311 and the medicine feeding gear two 312 are meshed and installed. The medicine feeding gear two 312 is fixedly installed with the medicine feeding connecting shaft 313. The center of the medicine feeding connecting shaft 313 is provided with a through hole. The through hole on the medicine feeding connecting shaft 313 is matched with the linkage shaft 316. The medicine feeding connecting shaft 313 and the medicine feeding screw 314 are fixedly installed.

[0032] The cleaning assembly comprises a switch unit, a linkage shaft 316 and a linkage shaft support 321. The linkage shaft 316 is communicated with the water inlet pipe. The water inlet pipe is communicated with the water tank. Water is transported from the water inlet pipe to the linkage shaft 316 through the pump. The linkage shaft 316 is internally provided with a cavity. The side wall of the cavity of the linkage shaft 316 is provided with a rectangular hole. The cavity in the linkage shaft 316 is communicated with the inside of the medicine feeding screw 314 through the rectangular hole. The linkage shaft 316 is provided with a plurality of switch units. The linkage shaft 316 is installed at the center of the linkage shaft support 321. The linkage shaft support 321 is fixedly installed in the inside of the medicine feeding screw 314.

[0033] The switch unit comprises a circular table 317, a sliding rod 318, a sealing plate 319 and a sealing spring 320. The circular table 317 is fixedly installed on the linkage shaft 316. The inclined surface of the circular table 317 is in contact with the first end of the sliding rod 318. The second end of the sliding rod 318 is fixedly installed with the sealing plate 319. The outer wall of the medicine feeding screw 314 is provided with a cylindrical groove. The sealing plate 319 is arranged in the cylindrical groove of the medicine feeding screw 314. The surface of the sealing plate 319 is matched with the outer wall of the medicine feeding screw 314, so that the medicine will not accumulate around the sealing plate 319. The sealing spring 320 is sleeved on the sliding rod 318. The first end of the sealing spring 320 is fixedly installed on the sliding rod 318. The second end of the sealing spring 320 is fixedly installed on the inner wall of the medicine feeding screw 314. The center of the cylindrical groove of the medicine feeding screw 314 is provided with a through hole. The sliding rod 318 is slidingly installed on the through hole of the medicine feeding screw 314. The side wall of the sliding rod 318 is uniformly provided with a plurality of vertical grooves.

[0034] The micro-dosing mechanism comprises an adjusting assembly, a rotating assembly, a cleaning assembly, a micro-dosing port 408, a micro-dosing cavity 409 and a micro-dosing screw 416. The adjusting assembly is arranged on the medicine delivery cavity 308. The bottom of the adjusting assembly is provided with the micro-dosing port 408. The bottom of the micro-dosing port 408 is fixedly provided with the micro-dosing cavity 409. The micro-dosing port 408 is arranged at one end of the micro-dosing cavity 409. The other end of the micro-dosing cavity 409 is provided with a medicine outlet. The adjusting assembly can drive the micro-dosing port 408 to move along the length direction of the medicine delivery cavity 308, so that the micro-dosing port 408 is in communication with the opening of the medicine delivery cavity 308. The micro-dosing cavity 409 is rotatably provided with the micro-dosing screw 416. The micro-dosing screw 416 is driven to rotate by the rotating assembly. The micro-dosing screw 416 is provided with a spiral groove. The micro-dosing screw 416 is cleaned by the cleaning assembly.

[0035] The adjusting assembly comprises a horizontal moving unit, a connecting ring 406 and a blocking plate 407. The horizontal moving unit is arranged on the medicine delivery cavity 308. The bottom of the horizontal moving unit is fixedly provided with the connecting ring 406. The horizontal moving unit can drive the connecting ring 406 to move along the length direction of the medicine delivery cavity 308. The bottom of the connecting ring 406 is fixedly provided with the micro-dosing port 408. The connecting ring 406 and the micro-dosing port 408 are in communication. The connecting ring 406 can cover the opening at the end of the medicine delivery cavity 308. One end of the connecting ring 406 is fixedly provided with the blocking plate 407. The blocking plate 407 can block the opening of the medicine delivery cavity 308.

[0036] The horizontal moving unit comprises a fixed frame 401, an adjusting lead screw 402, an adjusting sliding block 403, an adjusting motor mounting plate 404, an adjusting motor 405 and an end cover 430. The end cover 430 is fixedly arranged on the medicine delivery cavity 308. The fixed frame 401 is fixedly arranged on the end cover 430. The fixed frame 401 is rotatably provided with the adjusting lead screw 402. The adjusting lead screw 402 and the output shaft of the adjusting motor 405 are fixedly arranged. The adjusting motor 405 is fixedly arranged on the adjusting motor mounting plate 404. The adjusting motor mounting plate 404 is fixedly arranged on the medicine delivery cavity 308. The adjusting lead screw 402 and the adjusting sliding block 403 are threadedly arranged. The adjusting sliding block 403 and the connecting ring 406 are fixedly arranged.

[0037] The rotating assembly comprises the sliding frame 410, a micro-dose delivery motor 411, a micro-dose delivery gear one 412, a micro-dose delivery gear two 413, a micro-dose delivery drive shaft 414, a sealing tube 415 and a micro-dose delivery sliding block 417, the micro-dose delivery motor 411 is fixedly installed on the sliding frame 410, an output shaft of the micro-dose delivery motor 411 is fixedly installed with the micro-dose delivery gear one 412, the micro-dose delivery gear one 412 is rotatably installed on the sliding frame 410, the micro-dose delivery gear one 412 is rotatably installed with the micro-dose delivery gear two 413, the micro-dose delivery gear two 413 is rotatably installed on the sliding frame 410, the micro-dose delivery gear two 413 is fixedly installed on the micro-dose delivery drive shaft 414, the outer wall of the micro-dose delivery drive shaft 414 is sleeved with the sealing tube 415, the sealing tube 415 is fixedly installed on the micro-dose delivery cavity 409, one end of the outer wall of the micro-dose delivery drive shaft 414 is provided with the micro-dose delivery sliding block 417, the micro-dose delivery screw 416 is internally provided with a cylindrical hole, a straight sliding slot is arranged in the length direction of the cylindrical hole in the micro-dose delivery screw 416, and the micro-dose delivery sliding block 417 is slidably installed in the straight sliding slot of the micro-dose delivery screw 416.

[0038] The cleaning assembly comprises a telescopic unit and a connecting unit, the first end of the telescopic unit is in communication with the interior of the medicine delivery screw 314, the second end of the telescopic unit is in communication with the micro-dose delivery drive shaft 414, the first end of the telescopic unit is also connected with the linkage shaft 316, the linkage shaft 316 is moved by the telescopic unit, and the connecting unit is used for enabling the micro-dose delivery drive shaft 414 and the micro-dose delivery screw 416 to be in communication.

[0039] The telescopic unit comprises a connecting plate 418, a connecting spring 419, an end plate 420, a middle tube 421, an outer tube 422, an inner tube 423 and a connecting tube 424, the first end of the connecting tube 424 is rotatably installed with the micro-dose delivery drive shaft 414, the second end of the connecting tube 424 is fixedly installed with the inner tube 423, the outer wall of the inner tube 423 is provided with a sliding block, the inner wall of the middle tube 421 is provided with a straight sliding slot, the sliding block on the outer wall of the inner tube 423 is slidably installed on the straight sliding slot on the inner wall of the middle tube 421, the end of the middle tube 421 is fixedly installed with the end plate 420, the center position of the end plate 420 is provided with a through hole, the eccentric position of the end plate 420 is provided with a water outlet, the linkage shaft 316 is slidably installed on the through hole of the end plate 420, the end plate 420 is also fixedly installed with the connecting spring 419, the connecting spring 419 is sleeved on the linkage shaft 316, the connecting spring 419 is fixedly installed on the linkage shaft 316 through the connecting plate 418, the outer wall of the middle tube 421 is provided with a sliding block, the inner wall of the outer tube 422 is provided with a straight sliding slot, the sliding block on the outer wall of the middle tube 421 is slidably installed on the straight sliding slot on the inner wall of the outer tube 422, the outer tube 422 is fixedly installed on the end cover 430, the outer tube 422 is in communication with the medicine delivery screw 314, and the medicine delivery screw 314 is rotatably installed on the outer tube 422.

[0040] The connecting unit comprises a reset spring 425, a contact plate 426 and a contact block 427, the outer wall of the micro drug delivery cavity 409 is provided with a sliding rail in the length direction, a sliding frame 410 is slidingly installed on the sliding rail of the micro drug delivery cavity 409, the reset spring 425 is installed between the sliding frame 410 and the micro drug delivery cavity 409, the reset spring 425 is sleeved on the micro drug delivery driving shaft 414, the sliding frame 410 is further provided with the contact block 427, the contact block 427 is in contact with the contact plate 426, and the contact plate 426 is fixedly installed on the fixed frame 401; the side wall of the cylindrical hole in the micro drug delivery screw 416 is provided with a cleaning hole 428, the cleaning hole 428 is located on the thread of the micro drug delivery screw 416, the side wall of the end of the micro drug delivery driving shaft 414 is provided with a connecting hole 429, after the contact block 427 touches the contact plate 426, the micro drug delivery driving shaft 414 does not continue to move, the micro drug delivery screw 416 continues to move, so that the cleaning hole 428 and the connecting hole 429 are communicated.

[0041] The specific operation steps of the present application are as follows: in actual use, the experimental personnel place the measuring cup on the weighing platform 102 in the machine shell 103; start the dehumidifier 2, the dehumidifier 2 dehumidifies the air in the machine shell 103, and after dehumidification, zero calibration is performed, the required drug quality is input on the digital display platform 101 according to the experiment, the lifting motor 301 is started, the lifting motor 301 drives the lifting lead screw 303 to rotate, the lifting lead screw 303 drives the lifting sliding block 304, the lifting sliding plate 305 and the baffle 306 to descend, and the lifting sliding plate 305 drives the drug delivery cavity 308 to descend above the measuring cup, so that the measuring cup of different heights can be adapted.

[0042] The operator puts an appropriate amount of medicine into the feed inlet 307, the medicine enters the drug delivery cavity 308 through the feed inlet 307, the drug delivery motor 309 is started, the drug delivery motor 309 drives the drug delivery gear one 311 to rotate, the drug delivery gear one 311 drives the drug delivery gear two 312 and the drug delivery connecting shaft 313 to rotate, the drug delivery connecting shaft 313 drives the drug delivery screw 314 and the drug delivery spiral blade 315 to rotate, and the drug delivery screw 314 and the drug delivery spiral blade 315 drive the medicine to move to the opening of the drug delivery cavity 308, and then the medicine falls into the measuring cup from the opening of the drug delivery cavity 308.

[0043] When the quality is close to the required value and a small amount of medicine needs to be added, the medicine delivery screw 314 stops rotating, the adjusting motor 405 is started, the adjusting motor 405 drives the adjusting screw 402 to rotate, the adjusting screw 402 drives the adjusting sliding block 403 to move in the length direction of the medicine delivery cavity 308, the adjusting sliding block 403 drives the connecting ring 406, the small amount of medicine outlet 408 and the small amount of medicine delivery cavity 409 to move, when the small amount of medicine outlet 408 moves to the opening of the medicine delivery cavity 308, the medicine delivery screw 314 continues to rotate, the medicine in the medicine delivery cavity 308 enters the small amount of medicine delivery cavity 409 through the connecting ring 406 and the small amount of medicine outlet 408, the small amount of medicine delivery motor 411 is started, the small amount of medicine delivery motor 411 drives the small amount of medicine delivery gear one 412 to rotate, the small amount of medicine delivery gear one 412 drives the small amount of medicine delivery gear two 413 to rotate, the small amount of medicine delivery gear two 413 drives the small amount of medicine delivery drive shaft 414 and the small amount of medicine delivery sliding block 417 on the small amount of medicine delivery drive shaft 414 to rotate, the small amount of medicine delivery sliding block 417 drives the small amount of medicine delivery screw 416 to rotate, through the rotation of the small amount of medicine delivery screw 416, the medicine in the helical groove of the small amount of medicine delivery screw 416 is delivered to the medicine outlet of the small amount of medicine delivery cavity 409, and then falls into the measuring cup from the medicine outlet of the small amount of medicine delivery cavity 409, so as to add a small amount of medicine.

[0044] When the medicine delivery cavity 308 and the small amount of medicine delivery cavity 409 need to be cleaned, the adjusting assembly drives the blocking plate 407 to move, the opening of the medicine delivery cavity 308 is blocked by the blocking plate 407, water in the water tank is delivered to the water inlet pipe by the pump, enters the linkage shaft 316 through the water inlet pipe, and flows into the inside of the medicine delivery screw 314 through the rectangular hole on the linkage shaft 316. At the same time, the adjusting assembly drives the rotating assembly to move, the rotating assembly drives the connecting pipe 424 to move, the connecting pipe 424 drives the inner side pipe 423 to slide in the inside of the middle pipe 421. At this time, the cleaning hole 428 and the connecting hole 429 are not connected, and the linkage shaft 316 and the end plate 420 also do not move due to the restriction of the slide rod 318 on the circular table 317.

[0045] When the inside of the medicine delivery cavity 308 is cleaned, the adjusting assembly continues to drive the connecting pipe 424 to move through the rotating assembly, the connecting pipe 424 drives the inner side pipe 423 to move, when the sliding block on the inner side pipe 423 moves to the end of the linear sliding groove of the middle pipe 421, the sliding block on the inner side pipe 423 drives the middle pipe 421 to move, the end plate 420 on the middle pipe 421 stretches the connecting spring 419, the connecting spring 419 drives the linkage shaft 316 to move through the connecting plate 418, the circular table 317 on the linkage shaft 316 pushes the slide rod 318 to slide on the medicine delivery screw 314, the sealing plate 319 is not attached to the medicine delivery screw 314, and water is sprayed out through the vertical groove on the slide rod 318, so as to clean the medicine delivery screw blade 315 and the medicine delivery screw 314.

[0046] When the inside of the micro-dosing cavity 409 needs to be cleaned, the adjusting assembly continues to drive the rotating assembly to move. When the contact block 427 touches the contact plate 426, the sliding frame 410 cannot continue to move, the micro-dosing cavity 409 compresses the return spring 425, the cleaning hole 428 on the micro-dosing screw rod 416 moves towards the connecting hole 429 on the micro-dosing drive shaft 414, stops moving when the cleaning hole 428 and the connecting hole 429 are connected, the water in the micro-dosing screw rod 314 enters the inside of the intermediate pipe 421 and the inner pipe 423 through the water outlet on the end plate 420, enters the inside of the connecting pipe 424 through the inside of the inner pipe 423, enters the inside of the micro-dosing drive shaft 414 through the inside of the connecting pipe 424, enters the cleaning hole 428 through the connecting hole 429 on the micro-dosing drive shaft 414, and flows out through the cleaning hole 428, thereby cleaning the spiral groove on the cleaning hole 428.

Claims

1. A high-precision quantitative dispensing electronic balance for the field of electronic balances, characterized in that, It includes an electronic balance measuring body, a dehumidifier (2) is installed on the electronic balance measuring body, the dehumidifier (2) is used to dehumidify the air inside the electronic balance measuring body, a quantitative drug delivery mechanism is installed on the electronic balance measuring body, and a micro-drug delivery mechanism is installed on the quantitative drug delivery mechanism. The quantitative drug delivery mechanism includes a lifting assembly, on which a drug delivery chamber (308) is provided. The lifting assembly is used to adjust the height of the drug delivery chamber (308). A drug delivery screw (314) is rotatably installed inside the drug delivery chamber (308). A drug delivery spiral blade (315) is provided on the drug delivery screw (314). Drug delivery is performed by rotating the drug delivery screw (314). A cleaning assembly is provided inside the drug delivery screw (314). The cleaning assembly is used to clean the inside of the drug delivery chamber (308). An opening is provided at the end of the drug delivery chamber (308).

2. The high-precision quantitative dispensing electronic balance for electronic balances as described in claim 1, characterized in that, The cleaning assembly includes a linkage shaft (316), which has a cavity inside. The cavity inside the linkage shaft (316) is connected to the inside of the drug delivery screw (314). Multiple sets of switch units are provided on the linkage shaft (316).

3. The high-precision quantitative dispensing electronic balance for electronic balances as described in claim 2, characterized in that, The switching unit includes a frustum (317), the inclined surface of the frustum (317) and the first end of the slide rod (318) are in contact and fit together, the second end of the slide rod (318) is fixedly installed with a sealing plate (319), the sealing plate (319) and the outer wall of the drug delivery screw (314) are in contact and fit together, and the surface of the sealing plate (319) matches the outer wall of the drug delivery screw (314) so ​​that the medicine will not accumulate around the sealing plate (319). A sealing spring (320) is sleeved on the slide rod (318), the first end of the sealing spring (320) is fixedly installed on the slide rod (318), and the second end of the sealing spring (320) is fixedly installed on the inner wall of the drug delivery screw (314). A through hole is provided on the side wall of the drug delivery screw (314), and the slide rod (318) is slidably installed on the through hole on the side wall of the drug delivery screw (314), and a vertical groove is provided on the side wall of the slide rod (318).

4. A high-precision quantitative dispensing electronic balance for electronic balances as described in claim 1, characterized in that, The micro-infusion mechanism includes an adjustment component. A micro-infusion port (408) is provided at the bottom of the adjustment component. A micro-infusion chamber (409) is fixedly installed at the bottom of the micro-infusion port (408). The micro-infusion port (408) is located at one end of the micro-infusion chamber (409), and an outlet is provided at the other end of the micro-infusion chamber (409). The adjustment component can drive the micro-infusion port (408) to move along the length direction of the infusion chamber (308), so that the micro-infusion port (408) is connected to the opening of the infusion chamber (308). A micro-infusion screw (416) is rotatably installed inside the micro-infusion chamber (409). The micro-infusion screw (416) is driven to rotate by the rotation component. A spiral groove is provided on the micro-infusion screw (416). The micro-infusion screw (416) is cleaned by the cleaning component.

5. A high-precision quantitative dispensing electronic balance for the field of electronic balances as described in claim 4, characterized in that, The adjustment assembly includes a transverse unit, and a connecting ring (406) is fixedly installed at the bottom of the transverse unit. The transverse unit can drive the connecting ring (406) to move along the length direction of the drug delivery chamber (308). The connecting ring (406) is connected to the micro-drug outlet (408). The connecting ring (406) can cover the opening at the end of the drug delivery chamber (308). A baffle plate (407) is fixedly installed at one end of the connecting ring (406). The baffle plate (407) can block the opening of the drug delivery chamber (308).

6. A high-precision quantitative dispensing electronic balance for the field of electronic balances as described in claim 5, characterized in that, The rotating assembly includes a micro-infusion drive shaft (414), a micro-infusion slider (417) is provided on the outer wall of the micro-infusion drive shaft (414), the micro-infusion slider (417) is slidably installed in the length direction inside the micro-infusion screw (416), a micro-infusion gear two (413) is fixedly installed on the outer wall of the micro-infusion drive shaft (414), the micro-infusion gear two (413) and the micro-infusion gear one (412) are meshed and installed, and the micro-infusion gear two (413) is driven to rotate by the micro-infusion gear one (412).

7. A high-precision quantitative dispensing electronic balance for the field of electronic balances as described in claim 6, characterized in that, The cleaning assembly includes a telescopic unit and a connecting unit. The first end of the telescopic unit is connected to the inside of the drug delivery screw (314), and the second end of the telescopic unit is connected to the micro-drug delivery drive shaft (414). The first end of the telescopic unit is also connected to the linkage shaft (316). The telescopic unit drives the linkage shaft (316) to move. The connecting unit is used to connect the micro-drug delivery drive shaft (414) and the micro-drug delivery screw (416).

8. A high-precision quantitative dispensing electronic balance for electronic balances as described in claim 7, characterized in that, The telescopic unit includes a connecting pipe (424), a micro-infusion drive shaft (414) is rotatably mounted on the first end of the connecting pipe (424), an inner pipe (423) is fixedly mounted on the second end of the connecting pipe (424), a slider is provided on the outer wall of the inner pipe (423), the slider on the outer wall of the inner pipe (423) is slidably mounted on the inner wall of the intermediate pipe (421), an end plate (420) is fixedly mounted on the end of the intermediate pipe (421), a through hole is provided at the center of the end plate (420), and a [missing information] is provided at the eccentric position of the end plate (420). The water outlet has a linkage shaft (316) slidably installed on the through hole of the end plate (420). A connecting spring (419) is also fixedly installed on the end plate (420). The connecting spring (419) is fixedly installed on the linkage shaft (316) through the connecting plate (418). A slider is provided on the outer wall of the intermediate tube (421). The slider on the outer wall of the intermediate tube (421) is slidably installed on the inner wall of the outer tube (422). The outer tube (422) is fixedly installed on the end cover (430). The outer tube (422) is connected to the drug delivery screw (314).

9. A high-precision quantitative dispensing electronic balance for the field of electronic balances as described in claim 8, characterized in that, The connecting unit includes a sliding frame (410), which is slidably mounted on the micro-infusion chamber (409). A return spring (425) is provided between the sliding frame (410) and the micro-infusion chamber (409). The return spring (425) is sleeved on the micro-infusion drive shaft (414). A contact block (427) is also provided on the sliding frame (410). The contact block (427) and the contact plate (426) are in contact. A cleaning hole (428) is provided on the thread of the micro-infusion screw (416). A connecting hole (429) is provided on the micro-infusion drive shaft (414). When the contact block (427) touches the contact plate (426), the micro-infusion drive shaft (414) does not continue to move, and the micro-infusion screw (416) continues to move, thereby connecting the cleaning hole (428) and the connecting hole (429).

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