Liquid medicine measuring device

Abstract

The present invention discloses a liquid medicine meter, which relates to the field of medicine measurement, and includes a placing base plate, a mounting support rod, a mounting plate, a measuring scale and a measuring bottle, wherein the mounting support rod is fixedly mounted on the upper end of the placing base plate, the mounting plate is fixedly mounted on the upper end of the mounting support rod, the measuring scale is fixedly placed on the upper end of the mounting plate, the measuring bottle is fixedly placed on the upper end of the measuring scale, a guide structure is fixedly mounted at the rear of the bottom of the measuring bottle, and a weight structure is arranged on the outer side of the measuring bottle. The liquid medicine meter described in the present invention is used to separately measure the medicine to be used again, so as to achieve the accurate weight of the medicine, the weight measurement of the medicine after the weight is measured, the flow observation measurement when the medicine is injected, the effect of medicine measurement is increased, the rapid discharge of the medicine in the measuring bottle after measurement is achieved, and the overall removal of the measured medicine is more convenient.

Description

Technical Field

[0001] The invention relates to the field of medicine measurement, in particular to a liquid medicine meter. Background Art

[0002] Liquid medicine meter is a device used to measure the volume of liquid medicine. When testing and using liquid medicine in production, it is necessary to measure the volume of the medicine to obtain the accurate volume of the medicine before testing or using it. Therefore, liquid medicine meter is widely used in production and use occasions;

[0003] The Chinese patent with the publication number of "CN214538163U" discloses "a metering trough for medicine production, including a tank body, the bottom end of the outer wall of the tank body is fastened with a support leg by bolts, the top end of the inner cavity of the tank body is fastened with a sensor by screws, and the top right side of the tank body is fastened with a buzzer by screws". Although it can play the role of "the device can effectively facilitate the user to measure the liquid injected into the tank body, the measurement accuracy is higher, the practicality of the use of the metering trough for medicine production is increased, and it is more in line with the actual use needs", the metering device mainly measures the volume of the medicine by container calculation when in use, and the container is an integrated structure. Therefore, when the medicine is used after being measured, the medicine cannot be measured and weighed again, which makes it inconvenient to take and use the medicine. In addition, the measuring method of the metering device is single, and it can only measure the volume. The weight cannot be measured when the medicine is taken. When the medicine is injected, the flow rate cannot be measured, which reduces the overall metering effect of the medicine. At the same time, after the medicine is measured, the integrated structure of the metering device is also not convenient for the discharge and use of the medicine. Summary of the invention

[0004] The main purpose of the present invention is to provide a liquid medicine metering device, which can effectively solve the technical problems raised by the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A liquid medicine metering device comprises a placing base plate, a mounting support rod, a mounting plate, a measuring scale platform and a measuring bottle, wherein the mounting support rod is fixedly mounted on the upper end of the placing base plate, the mounting plate is fixedly mounted on the upper end of the mounting support rod, the measuring scale platform is fixedly placed on the upper end of the mounting plate, the measuring bottle is fixedly placed on the upper end of the measuring scale platform, a guide-out structure is fixedly mounted at the bottom rear of the measuring bottle, a component structure is arranged on the outer side of the measuring bottle, a track support rod is fixedly mounted on the upper end of the mounting plate, a mounting guide rail is fixedly mounted on the upper end of the track support rod, a bottle cap support rod is fixedly mounted on the upper end of the mounting guide rail, a sealing bottle cap which is mounted in cooperation with the measuring bottle is fixedly mounted on one side of the upper end of the bottle cap support rod, an input pipe is fixedly mounted on the top of the sealing bottle cap, an injection joint is movably mounted on the outer side of the input pipe, a flow meter structure and a pump body structure are movably mounted on the outer side of the mounting guide rail, and the flow meter structure is located in front of the pump body structure.

[0007] As a further solution of the present invention, the front end of the weighing scale is fixedly installed with a weighing panel placed on the upper end of the mounting plate, a lifting handle is fixedly installed on the outer top of the measuring bottle, a positioning ring is fixedly installed on one side of the mounting guide rail, a positioning knob is threadedly installed on the outer side of the positioning ring, the positioning ring is sleeved on the outer side of the measuring bottle, and the end of the positioning knob passes through the positioning ring and is pressed against the outer side of the measuring bottle.

[0008] As a further solution of the present invention, the outlet structure includes an outlet pipe, a switch valve, a discharge pipe, a discharge head and a rotating switching rod. The outlet pipe is fixedly installed at the bottom of the measuring bottle, the switch valve is fixedly installed at the lower end of the outlet pipe, the discharge pipe is movably installed at the lower end of the switch valve, the discharge head is fixedly installed at one end of the discharge pipe away from the switch valve, and the rotating switching rod is fixedly installed on the outside of the discharge pipe.

[0009] As a further solution of the present invention, the outlet pipe is connected to the interior of the measuring bottle, the discharge pipe is arranged in an L shape, and the discharge pipe and the discharge head are located below the mounting plate.

[0010] As a further solution of the present invention, the component structure includes a lower pressure ring, a connecting rod, a positioning plug plate, a mounting frame, a mounting slot and a component bottle. The lower pressure ring is placed at the upper end of the measuring scale platform and is located on the outside of the measuring bottle. The connecting rod is fixedly installed on both sides of the outside of the lower pressure ring. The positioning plug plate is movably installed in the middle of the outside of the connecting rod. The mounting frame is fixedly installed at the lower end of the connecting rod. A plurality of mounting slots are opened on the inner side of the mounting frame. The component bottle is inserted into the mounting slot and is located below the discharge head.

[0011] As a further solution of the present invention, positioning slots are provided on both sides of the mounting plate. When the lower pressure ring is raised, the positioning plug plate is inserted into the positioning slot for matching connection. The mounting frame and the component bottle are located between the bottom plate and the mounting plate.

[0012] As a further solution of the present invention, the sealing bottle cap is movably covered on the top of the measuring bottle, and the input pipe passes through the sealing bottle cap downward and is located inside the measuring bottle.

[0013] As a further solution of the present invention, the flowmeter structure includes a first slider, an inlet flowmeter, a flowmeter output connector and a flowmeter input connector. The first slider is slidably installed in the front of the card slot of the mounting guide rail, the inlet flowmeter is fixedly installed at the upper end of the first slider, the flowmeter output connector and the flowmeter input connector are both fixedly installed at the rear end of the inlet flowmeter, and the flowmeter output connector is located above the flowmeter input connector.

[0014] As a further solution of the present invention, the pump body structure includes a second slider, an extraction pump, a pump body input connector and a pump body output connector. The second slider is slidably installed in the rear of the slot of the mounting guide rail, the extraction pump is fixedly installed at the upper end of the second slider, and the extraction pump is located behind the import flow meter. The pump body input connector and the pump body output connector are fixedly installed at the front end of the extraction pump, and the pump body input connector is located on one side of the pump body output connector.

[0015] As a further solution of the present invention, the first slider and the second slider both slide back and forth around the mounting rail, and when the injection joint faces forward, the flow meter output joint is matched and connected thereto, and when the injection joint faces backward, the pump body input joint is matched and connected thereto.

[0016] Compared with the prior art, the present invention has the following beneficial effects: when the measuring bottle needs to divide the medicine, the medicine is put into multiple dividing bottles, and then the volume of the medicine is measured by the liquid level mark on the outside of the dividing bottle, so that the medicine to be used is measured again separately, so that the medicine is accurately divided and the medicine is more convenient to be taken out and used after being measured;

[0017] When the medicine in the weighing bottle needs to be weighed, the weighing scale with integrated weight measurement can weigh the medicine and also make the weighing scale weigh the weight of the weighing bottle to obtain the weight of the medicine in the weighing bottle, so as to achieve the weight measurement of the medicine after weighing, and further improve the weighing effect of the medicine after the medicine is weighed;

[0018] The import flow meter is installed in a modular way. When injecting medicine, the medicine is injected through the flow meter output joint on the import flow meter, so that the medicine passes through the import flow meter and then enters the metering bottle from the injection joint, so that the import flow meter displays the flow of the injected medicine, realizing the flow observation and measurement when the medicine is injected, increasing the effect of medicine measurement and improving the accuracy of measurement;

[0019] The extraction pump is installed in a modular manner, and the operation of the extraction pump is used to generate suction, so that the input pipe draws out the medicine in the metering bottle, and then discharges it from the output joint of the pump body, thereby achieving rapid discharge of the medicine in the metering bottle after metering, making it more convenient to remove the measured medicine as a whole for use, and the modular installation structure also facilitates the installation and use of other accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a liquid medicine metering device of the present invention;

[0021] Figure 2 A partial side view of a liquid medicine metering device according to the present invention;

[0022] Figure 3 A partial rear view of a liquid medicine metering device according to the present invention;

[0023] Figure 4 It is an enlarged view of the component structure in a liquid medicine meter of the present invention;

[0024] Figure 5 This is a structural diagram of the connection between the flow meter output connector and the input pipe in a liquid medicine meter of the present invention;

[0025] Figure 6 This is a structural diagram of the connection between the pump body input connector and the input pipe in a liquid medicine metering device of the present invention;

[0026] Figure 7 The present invention is a sectional view of a metering bottle in a liquid medicine metering device.

[0027] In the figure: 1. Place the bottom plate; 2. Install the support rod; 3. Install the plate; 4. Weighing platform; 5. Weighing platform panel; 6. Weighing bottle; 7. Lifting handle; 8. Export structure; 9. Export pipeline; 10. Switch valve; 11. Discharge pipe; 12. Discharge head; 13. Rotary switching rod; 14. Component structure; 15. Lower pressure ring; 16. Connecting rod; 17. Positioning plug plate; 18. Mounting frame; 19. Mounting slot; 20. Component bottle; 21. Track support rod ; 22. Mounting rail; 23. Bottle cap support rod; 24. Sealing bottle cap; 25. Input pipe; 26. Injection joint; 27. Positioning ring; 28. Positioning knob; 29. ​​Flow meter structure; 30. First slider; 31. Inlet flow meter; 32. Flow meter output joint; 33. Flow meter input joint; 34. Pump body structure; 35. Second slider; 36. Extraction pump; 37. Pump body input joint; 38. Pump body output joint; 39. Positioning slot. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figure 1-Figure 7 As shown, a liquid medicine metering device includes a placement base plate 1, a mounting support rod 2, a mounting plate 3, a measuring scale platform 4 and a measuring bottle 6. The mounting support rod 2 is fixedly mounted on the upper end of the placement base plate 1, the mounting plate 3 is fixedly mounted on the upper end of the mounting support rod 2, the measuring scale platform 4 is fixedly placed on the upper end of the mounting plate 3, the measuring bottle 6 is fixedly placed on the upper end of the measuring scale platform 4, a guide structure 8 is fixedly mounted at the bottom rear of the measuring bottle 6, a component structure 14 is arranged on the outer side of the measuring bottle 6, and the upper end of the mounting plate 3 is located in front of and behind the measuring scale platform 4. A track support rod 21 is provided, a mounting guide rail 22 is fixedly installed on the upper end of the track support rod 21, a bottle cap support rod 23 is fixedly installed on the upper end of the mounting guide rail 22, a sealed bottle cap 24 which is mounted in cooperation with the metering bottle 6 is fixedly installed on one side of the upper end of the bottle cap support rod 23, an input pipe 25 is fixedly installed on the top of the sealed bottle cap 24, an injection joint 26 is movably installed on the outer side of the input pipe 25, a flow meter structure 29 and a pump body structure 34 are movably installed on the outer side of the mounting guide rail 22, and the flow meter structure 29 is located in front of the pump body structure 34.

[0030] In this embodiment, a weighing scale panel 5 placed on the upper end of the mounting plate 3 is fixedly installed at the front end of the weighing scale 4, and the weighing scale panel 5 serves to display and control the data of the weighing scale 4. A lifting handle 7 is fixedly installed on the top of the outer side of the measuring bottle 6, and the lifting handle 7 is used to lift the measuring bottle 6 up and down. A positioning ring 27 is fixedly installed on one side of the mounting guide rail 22, and a positioning knob 28 is threadedly installed on the outer side of the positioning ring 27. The positioning ring 27 is sleeved on the outer side of the measuring bottle 6, and the end of the positioning knob 28 passes through the positioning ring 27 and is pressed against the outer side of the measuring bottle 6. The positioning ring 27 is used to position the measuring bottle 6 after it is lifted.

[0031] In this embodiment, the outlet structure 8 includes an outlet pipe 9, a switch valve 10, a discharge pipe 11, a discharge head 12 and a rotating switching rod 13. The outlet pipe 9 is fixedly installed at the bottom of the metering bottle 6, the switch valve 10 is fixedly installed at the lower end of the outlet pipe 9, the discharge pipe 11 is movably installed at the lower end of the switch valve 10, the discharge head 12 is fixedly installed at one end of the discharge pipe 11 away from the switch valve 10, and the rotating switching rod 13 is fixedly installed on the outside of the discharge pipe 11. The rotating switching rod 13 has the effect of switching the direction of the discharge pipe 11.

[0032] In this embodiment, the outlet pipe 9 is connected to the interior of the measuring bottle 6, the discharge pipe 11 is arranged in an L shape, the discharge pipe 11 and the discharge head 12 are located below the mounting plate 3, and after the switch valve 10 is opened, the medicine in the measuring bottle 6 is guided downward through the outlet pipe 9.

[0033] In this embodiment, the component structure 14 includes a lower pressure ring 15, a connecting rod 16, a positioning plug plate 17, a mounting frame 18, a mounting slot 19 and a component bottle 20. The lower pressure ring 15 is placed on the upper end of the measuring scale 4 and is located on the outside of the measuring bottle 6. The connecting rod 16 is fixedly installed on both sides of the outside of the lower pressure ring 15. The positioning plug plate 17 is movably installed in the middle of the outside of the connecting rod 16. The mounting frame 18 is fixedly installed at the lower end of the connecting rod 16. A plurality of mounting slots 19 are opened on the inner side of the mounting frame 18. The component bottle 20 is inserted into the mounting slot 19 and is located below the discharge head 12. The component bottle 20 receives the discharged medicine below the discharge head 12.

[0034] In this embodiment, positioning slots 39 are provided on both sides of the mounting plate 3. When the lower pressure ring 15 is raised, the positioning plug plate 17 is inserted into the positioning slot 39 for matching connection. The mounting frame 18 and the component bottle 20 are located between the base plate 1 and the mounting plate 3. After the positioning plug plate 17 is inserted into the positioning slot 39, the connecting rod 16 is fixedly connected to the mounting plate 3, and then the lower pressure ring 15 is raised and suspended in the air.

[0035] In this embodiment, the sealing bottle cap 24 is movably covered on the top of the measuring bottle 6, and the input tube 25 passes downward through the sealing bottle cap 24 and is located inside the measuring bottle 6. The sealing bottle cap 24 seals the measuring bottle 6, and the input tube 25 inputs the medicine into the measuring bottle 6.

[0036] In this embodiment, the flowmeter structure 29 includes a first slider 30, an inlet flowmeter 31, a flowmeter output connector 32 and a flowmeter input connector 33. The first slider 30 is slidably installed in the front of the card slot of the mounting guide rail 22. The inlet flowmeter 31 is fixedly installed at the upper end of the first slider 30. The flowmeter output connector 32 and the flowmeter input connector 33 are both fixedly installed at the rear end of the inlet flowmeter 31, and the flowmeter output connector 32 is located above the flowmeter input connector 33. The first slider 30 slides by being inserted into the mounting guide rail 22, thereby achieving the effect of modular installation of the inlet flowmeter 31.

[0037] In this embodiment, the pump body structure 34 includes a second slider 35, an extraction pump 36, a pump body input connector 37 and a pump body output connector 38. The second slider 35 is slidably installed in the rear of the card slot of the mounting guide rail 22. The extraction pump 36 is fixedly installed at the upper end of the second slider 35, and the extraction pump 36 is located behind the import flow meter 31. The pump body input connector 37 and the pump body output connector 38 are fixedly installed at the front end of the extraction pump 36, and the pump body input connector 37 is located on one side of the pump body output connector 38. The second slider 35 slides by being inserted into the mounting guide rail 22, thereby achieving the effect of modular installation of the extraction pump 36.

[0038] In this embodiment, the first slider 30 and the second slider 35 both slide back and forth around the mounting rail 22. When the injection connector 26 faces forward, the flow meter output connector 32 is matched and connected thereto. When the injection connector 26 faces backward, the pump body input connector 37 is matched and connected thereto. The injection connector 26 is installed and connected with different accessories by being placed in different directions.

[0039] It should be noted that the present invention is a liquid medicine meter. When in use, the meter is placed and fixed as a whole by placing the bottom plate 1, and the injection joint 26 is rotated to face upward, and the medicine is injected from the injection joint 26, so that the medicine passes through the input tube 25 and enters the metering bottle 6. After the medicine is in the metering bottle 6, the volume of the medicine in the metering bottle 6 is measured by the liquid level mark on the outside of the metering bottle 6, and the metering bottle 6 is placed above the metering scale 4, and the weight is also weighed by the metering scale 4. The weighed data is displayed on the scale panel 5, so as to measure the volume and weight of the liquid medicine.

[0040] When the metering bottle 6 needs to weigh the medicine, the switch valve 10 below the outlet pipe 9 is opened, so that the medicine in the metering bottle 6 is discharged from the discharge head 12 along the outlet pipe 9, the switch valve 10 and the discharge pipe 11 to enter the weighing bottle 20. The discharge pipe 11 can also be rotated by rotating the switching rod 13 to change the position of the discharge head 12, so that the medicine enters multiple weighing bottles 20, and then the volume of the medicine is measured by the liquid level mark on the outside of the weighing bottle 20, so as to achieve the weight of the medicine;

[0041] When the weight of the medicine in the weighing bottle 20 needs to be measured, the measuring bottle 6 is lifted up and the positioning knob 28 is tightened so that the positioning knob 28 presses the measuring bottle 6 in the positioning ring 27 and separates it from the measuring scale 4. Then the positioning plug plate 17 is pulled out from the positioning slots 39 on both sides of the mounting plate 3, so that the lower pressing ring 15 falls and is placed on the measuring scale 4. The weighing bottle 20 and the downward pressure are used to make the measuring scale 4 measure the weight of the lower pressing ring 15 and the weighing bottle 20 below. After removing the weight outside the weighing bottle 20, the weight of the medicine in the weighing bottle 20 is obtained, so that the weight of the medicine after weighing is measured and used.

[0042] By using the flow statistics of the import flow meter 31, when the injection joint 26 faces forward, the first slider 30 is slid backward around the mounting guide rail 22, so that the import flow meter 31 moves backward, and then the flow meter output joint 32 on the import flow meter 31 is matched and connected with the injection joint 26. When injecting medicine, the medicine is injected through the flow meter output joint 32 on the import flow meter 31, so that the medicine passes through the import flow meter 31 and then enters the metering bottle 6 from the injection joint 26, so that the import flow meter 31 displays the flow of the injected medicine, realizing the flow observation and measurement when the medicine is injected;

[0043] Through the extraction of the extraction pump 36, when the injection connector 26 faces rearward, the second slider 35 slides forward around the mounting guide rail 22, so that the extraction pump 36 moves forward, and then the pump body input connector 37 on the extraction pump 36 is matched and connected with the injection connector 26, and then the operation of the extraction pump 36 generates suction, so that the input pipe 25 extracts the medicine in the metering bottle 6, and then discharges it from the pump body output connector 38, thereby realizing the rapid discharge of the medicine in the metering bottle 6 after measurement.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid medicine metering device, comprising a placement base plate (1), a mounting support rod (2), a mounting plate (3), a weighing platform (4) and a measuring bottle (6), wherein the mounting support rod (2) is fixedly mounted on the upper end of the placement base plate (1), the mounting plate (3) is fixedly mounted on the upper end of the mounting support rod (2), the weighing platform (4) is fixedly placed on the upper end of the mounting plate (3), and the measuring bottle (6) is fixedly placed on the upper end of the weighing platform (4), characterized in that: A guide structure (8) is fixedly mounted at the rear of the bottom of the metering bottle (6); a component structure (14) is arranged on the outside of the metering bottle (6); a track support rod (21) is fixedly mounted on the upper end of the mounting plate (3) located in front of and behind the metering scale platform (4); a mounting guide rail (22) is fixedly mounted on the upper end of the track support rod (21); a bottle cap support rod (23) is fixedly mounted on the upper end of the mounting guide rail (22); a sealed bottle cap (24) mounted in cooperation with the metering bottle (6) is fixedly mounted on one side of the upper end of the bottle cap support rod (23); an input pipe (25) is fixedly mounted on the top of the sealed bottle cap (24); an injection joint (26) is movably mounted on the outside of the input pipe (25); a flow meter structure (29) and a pump body structure (34) are movably mounted on the outside of the mounting guide rail (22); and the flow meter structure (29) is located in front of the pump body structure (34); The front end of the weighing platform (4) is fixedly mounted with a weighing platform panel (5) placed on the upper end of the mounting plate (3); the outer top of the measuring bottle (6) is fixedly mounted with a lifting handle (7); one side of the mounting guide rail (22) is fixedly mounted with a positioning ring (27); the outer side of the positioning ring (27) is threadedly mounted with a positioning knob (28); the positioning ring (27) is sleeved on the outer side of the measuring bottle (6); the end of the positioning knob (28) passes through the positioning ring (27) and is pressed against the outer side of the measuring bottle (6); The discharge structure (8) comprises a discharge pipe (9), a switch valve (10), a discharge pipe (11), a discharge head (12) and a rotary switch rod (13); the discharge pipe (9) is fixedly mounted at the bottom of the measuring bottle (6); the switch valve (10) is fixedly mounted at the lower end of the discharge pipe (9); the discharge pipe (11) is movably mounted at the lower end of the switch valve (10); the discharge head (12) is fixedly mounted at one end of the discharge pipe (11) away from the switch valve (10); and the rotary switch rod (13) is fixedly mounted on the outer side of the discharge pipe (11); The outlet pipe (9) is connected to the interior of the measuring bottle (6); the outlet pipe (11) is arranged in an L shape; the outlet pipe (11) and the outlet head (12) are located below the mounting plate (3); The weighing structure (14) comprises a lower pressure ring (15), a connecting rod (16), a positioning plug plate (17), a mounting frame (18), a mounting slot (19) and a weighing bottle (20); the lower pressure ring (15) is placed on the upper end of the weighing scale platform (4) and is located outside the weighing bottle (6); the connecting rod (16) is fixedly mounted on both sides of the outer side of the lower pressure ring (15); the positioning plug plate (17) is movably mounted in the middle of the outer side of the connecting rod (16); the mounting frame (18) is fixedly mounted on the lower end of the connecting rod (16); a plurality of mounting slots (19) are provided on the inner side of the mounting frame (18); the weighing bottle (20) is inserted into the mounting slot (19) and is located below the discharge head (12); Both sides of the mounting plate (3) are provided with positioning slots (39), and when the lower pressure ring (15) is raised, the positioning plug plate (17) is inserted into the positioning slots (39) for mating connection, and the mounting frame (18) and the component bottle (20) are located between the placement base plate (1) and the mounting plate (3); The sealing bottle cap (24) is movably covered on the top of the measuring bottle (6), and the input pipe (25) passes through the sealing bottle cap (24) downward and is located inside the measuring bottle (6); The flow meter structure (29) comprises a first slider (30), an inlet flow meter (31), a flow meter output connector (32) and a flow meter input connector (33); the first slider (30) is slidably mounted in front of a slot of the mounting guide rail (22); the inlet flow meter (31) is fixedly mounted on the upper end of the first slider (30); the flow meter output connector (32) and the flow meter input connector (33) are both fixedly mounted on the rear end of the inlet flow meter (31); and the flow meter output connector (32) is located above the flow meter input connector (33); The pump body structure (34) comprises a second slider (35), an extraction pump (36), a pump body input connector (37) and a pump body output connector (38); the second slider (35) is slidably mounted in the rear of a slot of the mounting guide rail (22); the extraction pump (36) is fixedly mounted on the upper end of the second slider (35), and the extraction pump (36) is located behind the inlet flow meter (31); the pump body input connector (37) and the pump body output connector (38) are fixedly mounted at the front end of the extraction pump (36), and the pump body input connector (37) is located on one side of the pump body output connector (38); The first slider (30) and the second slider (35) both slide forward and backward around the mounting guide rail (22); when the injection joint (26) faces forward, the flow meter output joint (32) is matched and connected thereto; and when the injection joint (26) faces backward, the pump body input joint (37) is matched and connected thereto; When the weight of the medicine in the weighing bottle (20) needs to be measured, the weighing bottle (6) is lifted up and the positioning knob (28) is tightened so that the positioning knob (28) presses the measuring bottle (6) into the positioning ring (27) and separates it from the weighing scale (4). Then, the positioning plug plate (17) is pulled out from the positioning slots (39) on both sides of the mounting plate (3), so that the lower pressure ring (15) falls and is placed above the weighing scale (4). The weighing bottle (20) is used together with the downward pressure to make the weighing scale (4) measure the weight of the lower pressure ring (15) and the weighing bottle (20) below. After removing the weight outside the weighing bottle (20), the weight of the medicine in the weighing bottle (20) is obtained, so that the weight of the medicine after weighing is measured and used; By using the flow statistics of the introduction flow meter (31), when the injection joint (26) faces forward, the first slider (30) is slid backward around the mounting guide rail (22), so that the introduction flow meter (31) moves backward, and then the flow meter output joint (32) on the introduction flow meter (31) is matched and connected with the injection joint (26). When injecting medicine, the medicine is injected through the flow meter output joint (32) on the introduction flow meter (31), so that the medicine passes through the introduction flow meter (31) and then enters the measuring bottle (6) from the injection joint (26), so that the introduction flow meter (31) displays the flow of the injected medicine, and the flow observation and measurement when the medicine is injected is realized; When the extraction pump (36) extracts and the injection joint (26) faces backward, the second slider (35) slides forward around the mounting guide rail (22), so that the extraction pump (36) moves forward, and then the pump body input joint (37) on the extraction pump (36) is connected with the injection joint (26). The operation of the extraction pump (36) generates suction, so that the input pipe (25) extracts the medicine in the metering bottle (6) and then discharges it from the pump body output joint (38), thereby realizing the rapid discharge of the medicine in the metering bottle (6) after metering.

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