Piece pushing machine liquid path system and control method

Abstract

The invention relates to the technical field of liquid paths of tablet pushers, in particular to a liquid path system of a tablet pusher and a control method, which comprises the following steps: a sampling needle moves downwards to collect blood, pre-discharges a small amount of blood to eliminate back clearance, and drips blood; cleaning the sampling needle and the push broach, blow-drying the push broach, and discharging waste liquid; the plunger pump M1 is pulled down to pump the maintenance solution into the sampling needle, after soaking is conducted for a period of time, the plunger pump M2 pumps pure water, the liquid path system is filled with the maintenance solution, and the air pump P2 is started to fill the corresponding reagent, according to the control method, single-needle blood sampling and blood dripping are adopted, the needed blood amount is small, dilution is avoided, and the problems of blood dilution and large blood sample consumption caused by a common double-needle system are solved; ultrasonic waves and pure water are used for cleaning the push broach, high-pressure air is used for blow-drying, the push broach is clean, pollution is not carried, the single-test cost is low, the sampling needle is cleaned with a blood cell diluent, blood is kept stable in the sampling needle, pure water cleaning is switched during shutdown, the phenomenon that the service life of a pump, a valve and the sampling needle is affected by crystallization is avoided, and meanwhile the single-test cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of tablet pusher fluid circuits, and in particular to a tablet pusher fluid circuit system and a control method. Background Art

[0002] There are red blood cells, white blood cells, platelets, etc. in the blood, which need to be stained and observed under a microscope to identify their morphology. The analysis and counting of these cells are very important in blood testing and disease diagnosis.

[0003] Existing hospitals usually use manual blood smearing, which has poor stability and repeatability, affecting subsequent identification and delaying diagnosis. A small number of users use fully automatic smear machines, which cause problems of blood dilution and high blood sample consumption. Summary of the Invention

[0004] The purpose of the present invention is to provide a film pusher fluid circuit system and control method, aiming to solve the problems of blood dilution and high blood sample consumption in traditional fully automatic film pushers.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a tablet pusher fluid circuit control method, comprising the following steps:

[0006] The sampling needle is moved downward to collect blood, a small amount of blood is pre-drained to eliminate back gap, and blood is dripped;

[0007] Clean the sampling needle and push knife, blow dry the push knife, and discharge the waste liquid;

[0008] Pull down the plunger pump M1 to pump the maintenance liquid into the sampling needle. After soaking for a period of time, the plunger pump M2 draws pure water to fill the liquid system, and start the air pump P2 to fill the corresponding reagent.

[0009] The specific method of the sampling needle descending to collect blood, pre-draining a small amount of blood to eliminate backlash, and dripping blood is as follows:

[0010] The sampling needle is inserted into the blood test tube, and the plunger pump M1 is pulled down to draw blood into the sampling needle. At the same time, the pressure sensor detects the pressure during sampling, converts the pressure into blood viscosity, and performs temperature compensation;

[0011] The sampling needle moves upward, and the plunger pump M2 extracts the diluent and discharges the liquid into the cleaning sleeve to clean the outer wall of the sampling needle. The air pump P2 is started to pump the waste liquid into the waste liquid tank. The plunger pump M1 moves upward to pre-discharge a small amount of blood to eliminate the backlash of the M1 plunger pump;

[0012] The sampling needle is moved onto the glass slide, and the plunger pump M1 moves upward to drop the required amount of blood onto the glass slide.

[0013] The specific method of cleaning the sampling needle and push knife, drying the push knife, and discharging the waste liquid is as follows:

[0014] The sampling needle moves upward, the plunger pump M2 extracts the diluent and discharges it into the cleaning sleeve to clean the inner wall and the sampling needle, and the air pump P2 is started to pump the waste liquid into the waste liquid tank;

[0015] The push blade is inserted into the cleaning tank, the plunger pump M2 draws pure water and then discharges the liquid to fill the cleaning tank, ultrasonically cleans the push blade, and the air pump P2 is started to pump the waste liquid into the waste liquid tank;

[0016] The push knife moves back and forth in front of the blowing head, and the air pump P1 is started to blow air to dry the push knife;

[0017] Start the air pump P3 to discharge the waste liquid in the waste liquid tank.

[0018] The plunger pump M1 is pulled down to pump the maintenance liquid into the sampling needle. After soaking for a period of time, the plunger pump M2 draws pure water to fill the liquid system, and the air pump P2 is started to fill the corresponding reagent.

[0019] Place the test tube containing the maintenance liquid under the sampling needle, pull down the plunger pump M1 to pump the maintenance liquid into the sampling needle. After soaking for a period of time, the plunger pump M2 draws pure water to fill the liquid system.

[0020] When the liquid levels in the diluent tank and pure water tank are low, start the air pump P2 to fill the corresponding reagents.

[0021] In a second aspect, the present invention further provides a tablet pusher fluid circuit system, which is applied to the tablet pusher fluid circuit control method as described in the first aspect above, and includes a solenoid valve V1, a solenoid valve V2, a solenoid valve V3, a solenoid valve V4, a solenoid valve V5, a solenoid valve V6, a solenoid valve V7, a solenoid valve V8, a solenoid valve V9, a solenoid valve V10, a solenoid valve V11, a solenoid valve V12, a solenoid valve V13, an air pump P1, an air pump P2, an air pump P3, a plunger pump M1, a plunger pump M2, a waste liquid tank, a blood sensor, a sampling needle, a pressure sensor, a temperature sensor, a diluent tank, a pure water tank, a cleaning sleeve, a cleaning tank, an ultrasonic pusher cleaning tank, a pusher, an air blowing head, and a countercurrent tank;

[0022] The solenoid valve V8 is connected to the air pump P2, the air pump P3 and the countercurrent tank respectively, the waste liquid tank is connected to the countercurrent tank, the solenoid valve V1, the solenoid valve V2, the solenoid valve V3, the solenoid valve V4 and the solenoid valve V5 respectively, the air pump P1, the solenoid valve V6 and the blowing head are connected in sequence, the push knife is arranged on one side of the blowing head, the ultrasonic push knife cleaning pool is connected to the solenoid valve V3 and the solenoid valve V4 respectively, the solenoid valve V2 is connected to the cleaning sleeve, and the solenoid valve V1 is connected to the cleaning pool. The solenoid valve V7 is respectively connected to the cleaning sleeve, the air blowing head and the solenoid valve V11, the solenoid valve V11, the solenoid valve V10, the solenoid valve V9 and the plunger pump M2 are connected in sequence, the sampling needle, the blood sensor, the pressure sensor, the plunger pump M1 and the solenoid valve V11 are connected in sequence, the solenoid valve V9 is respectively connected to the diluent tank and the pure water tank, the solenoid valve V12 is respectively connected to the temperature sensor and the waste liquid tank, and the solenoid valve V13 is respectively connected to the pure water tank and the waste liquid tank.

[0023] The present invention provides a liquid circuit control method for a film pusher. The sampling needle is moved downward to collect blood, a small amount of blood is pre-drained to eliminate backlash, and blood is dripped; the sampling needle and the push knife are cleaned, the push knife is blown dry, and waste liquid is discharged; the plunger pump M1 is pulled down to pump maintenance liquid into the sampling needle. After soaking for a period of time, the plunger pump M2 draws pure water to fill the liquid circuit system, and the air pump P2 is started to replenish the corresponding reagent. The control method adopts single-needle blood collection and blood dripping, which requires a small amount of blood and no dilution, avoiding the problems of blood dilution and large blood sample consumption caused by the commonly used double-needle system; a pressure sensor is used to detect blood viscosity, and a temperature sensor is used to detect temperature to perform viscosity compensation. Different film pushing parameters are used when pushing according to different blood viscosities to improve the consistency of the film pushing effect (when collecting blood from a test tube, A negative pressure is formed in the pipeline between the plunger pump M1 and the sampling needle, and the pressure is detected by the pressure sensor. According to the correlation between pressure and blood viscosity, the blood viscosity is output, and the temperature is detected by the temperature sensor to perform viscosity compensation. According to different blood viscosities, different film pushing parameters are adopted when pushing the film to improve the consistency of the film pushing effect), and single-machine film pushing is realized; the pusher is cleaned by ultrasonic + pure water and blown dry with high-pressure air, so that the pusher is clean and does not carry contamination, and the cost of each test is low; the sampling needle is cleaned with blood cell diluent to maintain the stability of the blood in the sampling needle, and is switched to pure water cleaning when the machine is shut down to avoid crystallization affecting the life of the pump, valve, and sampling needle, while reducing the cost of each test, solving the problems of blood dilution and high blood sample consumption in traditional fully automatic film pushing machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 The present invention provides a flow chart of a tablet pusher fluid circuit control method.

[0026] Figure 2 This is a flow chart of the specific method of collecting blood by moving the sampling needle downward, pre-discharging a small amount of blood to eliminate backlash, and dripping blood.

[0027] Figure 3 The present invention is a flow chart of a specific method for cleaning the sampling needle and the push knife, drying the push knife, and discharging waste liquid.

[0028] Figure 4 It is a flowchart of a specific method of pulling down the plunger pump M1 to pump the maintenance liquid into the sampling needle. After soaking for a period of time, the plunger pump M2 draws pure water to fill the liquid system, and the air pump P2 is started to fill the corresponding reagent.

[0029] Figure 5 It is a structural schematic diagram of a liquid path system of a tablet pusher provided by the present invention.

[0030] In the figure: 1-solenoid valve V1, 2-solenoid valve V2, 3-solenoid valve V3, 4-solenoid valve V4, 5-solenoid valve V5, 6-solenoid valve V6, 7-solenoid valve V7, 8-solenoid valve V8, 9-solenoid valve V9, 10-solenoid valve V10, 11-solenoid valve V11, 12-solenoid valve V12, 13-solenoid valve V13, 14-air pump P1, 15-air pump P2, 16-air pump P3, 17-plunger pump M1, 18-plunger pump M2, 19-waste liquid tank, 20-blood sensor, 21-sampling needle, 22-pressure sensor, 23-temperature sensor, 24-dilution liquid tank, 25-pure water tank, 26-cleaning cover, 27-cleaning tank, 28-ultrasonic pusher cleaning tank, 29-pusher, 30-countercurrent tank, 31-blowing head. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0032] See also Figures 1 to 5In a first aspect, the present invention provides a tablet pusher fluid circuit control method, comprising the following steps:

[0033] The S1 sampling needle (21) is moved downward to collect blood, a small amount of blood is pre-discharged to eliminate back gap, and blood is dripped;

[0034] Specific method:

[0035] S11: The sampling needle (21) is inserted into the blood test tube, and the plunger pump M1 (17) is pulled down to draw blood into the sampling needle (21). At the same time, the pressure sensor (22) detects the pressure during sampling, converts the pressure into blood viscosity, and performs temperature compensation;

[0036] In an embodiment of the present invention, the M1 plunger pump (17) is pulled down to draw a small section of air, forming an air column at the sampling needle (21). The sampling needle (21) is inserted into a blood test tube, and the M1 plunger pump (17) is pulled down to draw blood into the sampling needle (21). At this time, the air section isolates the blood and the diluent to prevent the blood from being diluted. At the same time, the pressure sensor (22) detects the pressure during sampling, converts the pressure into blood viscosity, and performs temperature compensation. The blood sensor (20) confirms that the amount of blood is sufficient.

[0037] S12 The sampling needle (21) moves upward, the plunger pump M2 (18) extracts the diluent and discharges the liquid into the cleaning sleeve (26), cleaning the outer wall of the sampling needle (21), and the air pump P2 (15) is started to pump the waste liquid into the waste liquid tank (19). The plunger pump M1 (17) moves upward to pre-discharge a small amount of blood to eliminate the backlash of the M1 plunger pump (17);

[0038] In an embodiment of the present invention, the plunger pump M2 (18) is pulled down to the bottom to extract the diluent; the sampling needle (21) moves upward, and at the same time, the solenoid valve V7 (7), the solenoid valve V10 (10), the solenoid valve V2 (2), and the air pump P2 (15) are opened, and the M2 plunger pump (18) moves upward to discharge liquid to clean the outer wall of the sampling needle (21), and at the same time, the waste liquid is pumped into the waste liquid tank (19), and then the plunger pump M1 (17) moves upward to pre-discharge a small amount of blood to eliminate the backlash of the plunger pump M1 (17); the solenoid valve V7 (7), the solenoid valve V10 (10), the solenoid valve V2 (2), and the air pump P2 (15) are closed, and the plunger pump M2 (18) is reset.

[0039] S13 The sampling needle (21) is moved onto the glass slide, and the plunger pump M1 (17) moves upward to drop the required amount of blood onto the glass slide.

[0040] In the embodiment of the present invention, the specific blood volume is determined according to the blood viscosity, which facilitates the subsequent pushing of the blood smear.

[0041] S2: cleaning the sampling needle (21) and the pusher (29), drying the pusher (29), and discharging the waste liquid;

[0042] Specific method:

[0043] S21: The sampling needle (21) moves upward, the plunger pump M2 (18) extracts the diluent and discharges it into the cleaning sleeve (26), cleaning the inner wall and the sampling needle (21), and the air pump P2 (15) is started to pump the waste liquid into the waste liquid tank (19);

[0044] In the embodiment of the present invention, the sampling needle (21) moves upward, and at the same time, the solenoid valve V10 (10), the solenoid valve V2 (2), and the air pump P2 (15) are opened, and the plunger pump M2 (18) moves upward to discharge liquid to clean the inner wall and needle of the sampling needle (21), and the plunger pump M1 (17) moves upward to the optical coupling position and simultaneously pumps waste liquid into the waste liquid tank (19); the solenoid valve V10 (10), the solenoid valve V2 (2), and the air pump P2 (15) are closed, and the plunger pump M2 (18) is reset.

[0045] S22: The pusher (29) is inserted into the cleaning tank, the plunger pump M2 (18) draws pure water and then discharges the liquid, filling the cleaning tank, ultrasonically cleaning the pusher (29), starting the air pump P2 (15) and then pumping the waste liquid into the waste liquid tank (19);

[0046] In an embodiment of the present invention, the push knife (29) is inserted into the cleaning tank, the solenoid valve V9 (9) is opened, the plunger pump M2 (18) is pulled down to extract pure water, and the solenoid valve V9 (9) is closed; the solenoid valve V10 (10) is opened, the plunger pump M2 (18) is discharged upward to fill the cleaning tank, the solenoid valve V10 (10) is closed, and the ultrasonic push knife cleaning pool (28) is started to clean the push knife (29); after the cleaning is completed, the solenoid valve V3 (3) and the air pump P2 (15) are opened to pump the waste liquid into the waste liquid tank (19); the solenoid valve V3 (3) and the air pump P2 (15) are closed, and the plunger pump M2 (18) is reset.

[0047] S23 the pusher (29) moves back and forth in front of the blowing head (31), and at the same time the air pump P1 (14) is started to blow air to dry the pusher (29);

[0048] In an embodiment of the present invention, the push knife (29) moves back and forth in front of the blowing head (31), and at the same time, the solenoid valve V6 (6) and the air pump P1 (14) are opened to blow air to dry the push knife (29); and the solenoid valve V6 (6) and the air pump P1 (14) are closed.

[0049] S24 starts the air pump P3 (16) to discharge the waste liquid in the waste liquid tank (19).

[0050] In the embodiment of the present invention, the electromagnetic valve V8 (8), the electromagnetic valve V5 (5), and the air pump P3 (16) are opened to discharge the waste liquid in the waste liquid tank (19); and the electromagnetic valve V8 (8), the electromagnetic valve V5 (5), and the air pump P3 (16) are closed.

[0051] S3 pulls down the plunger pump M1 (17) to pump the maintenance liquid into the sampling needle (21). After soaking for a period of time, the plunger pump M2 (18) draws pure water to fill the liquid system, and starts the air pump P2 (15) to fill the corresponding reagent.

[0052] Specific method:

[0053] S31: Place the test tube containing the maintenance liquid under the sampling needle (21), and pull the plunger pump M1 (17) downward to pump the maintenance liquid into the sampling needle (21). After soaking for a period of time, the plunger pump M2 (18) draws pure water to fill the liquid system.

[0054] In an embodiment of the present invention, a test tube filled with maintenance liquid is placed under the sampling needle (21), the sampling needle (21) descends to the bottom of the test tube, the plunger pump M1 (17) is pulled down to pump the maintenance liquid into the sampling needle (21), and after soaking for a period of time, the solenoid valve V9 (9) is opened, the plunger pump M2 (18) descends to extract pure water, and then the solenoid valve V9 (9) is closed; the solenoid valve V10 (10), the solenoid valve V11 (11), the solenoid valve V2 (2), and the air pump P2 (15) are opened, the plunger pump M2 (18) ascends to discharge liquid to clean the inner wall of the sampling needle (21), and at the same time pumps waste liquid into the waste liquid tank (19); the solenoid valve V10 (10), the solenoid valve V11 (11), the solenoid valve V2 (2), and the air pump P2 (15) are closed, and the plunger pump M1 (17) and the plunger pump M2 (18) are reset.

[0055] When the liquid levels of S32 diluent tank (24) and pure water tank (25) are low, start the air pump P2 (15) to fill up the corresponding reagents.

[0056] In an embodiment of the present invention, when the liquid levels of the diluent tank (24) and the pure water tank (25) are low, the air pump P2 (15), the solenoid valve V12 (12), and the solenoid valve V13 (13) are opened to replenish the corresponding reagents; and the air pump P2 (15), the solenoid valve V12 (12), and the solenoid valve V13 (13) are closed.

[0057] Please refer to the figure. In the second aspect, the present invention further provides a tablet pusher fluid circuit system, which is applied to the tablet pusher fluid circuit control method as described in the first aspect above, including solenoid valve V1 (1), solenoid valve V2 (2), solenoid valve V3 (3), solenoid valve V4 (4), solenoid valve V5 (5), solenoid valve V6 (6), solenoid valve V7 (7), solenoid valve V8 (8), solenoid valve V9 (9), solenoid valve V10 (10), solenoid valve V11 (11), solenoid valve V12 (12), solenoid valve V13 (13), air pump P1 (14), air pump P2 (15), air pump P3 (16), plunger pump M1 (17), plunger pump M2 (18), waste liquid tank (19), blood sensor (20), sampling needle (21), pressure sensor (22), temperature sensor (23), diluent tank (24), pure water tank (25), cleaning sleeve (26), cleaning pool (27), ultrasonic push knife cleaning pool (28), push knife (29), air blowing head (31) and countercurrent tank (30);

[0058] The solenoid valve V8 (8) is respectively connected to the air pump P2 (15), the air pump P3 (16) and the countercurrent tank (30), the waste liquid tank (19) is respectively connected to the countercurrent tank (30), the solenoid valve V1 (1), the solenoid valve V2 (2), the solenoid valve V3 (3), the solenoid valve V4 (4) and the solenoid valve V5 (5), the air pump P1 (14), the solenoid valve V6 (6) and the blowing head (31) are connected in sequence, the push knife (29) is arranged on one side of the blowing head (31), the ultrasonic push knife cleaning pool (28) is respectively connected to the solenoid valve V3 (3) and the solenoid valve V4 (4), the solenoid valve V2 (2) is connected to the cleaning sleeve (26), the solenoid valve V1 (1) is connected to the cleaning pool (27), the The solenoid valve V7 (7) is respectively connected to the cleaning sleeve (26), the air blowing head (31) and the solenoid valve V11 (11), the solenoid valve V11 (11), the solenoid valve V10 (10), the solenoid valve V9 (9) and the plunger pump M2 (18) are connected in sequence, the sampling needle (21), the blood sensor (20), the pressure sensor (22), the plunger pump M1 (17) and the solenoid valve V11 (11) are connected in sequence, the solenoid valve V9 (9) is respectively connected to the diluent tank (24) and the pure water tank (25), the solenoid valve V12 (12) is respectively connected to the temperature sensor (23) and the waste liquid tank (19), and the solenoid valve V13 (13) is respectively connected to the pure water tank (25) and the waste liquid tank (19).

[0059] In the embodiment of the present invention, the M1 plunger pump (17) is pulled down to draw a small section of air, forming an air column at the sampling needle (21), and the sampling needle (21) is inserted into the blood test tube. The M1 plunger pump (17) is pulled down to draw blood into the sampling needle (21). At this time, the air section isolates the blood and the diluent to prevent the blood from being diluted. At the same time, the pressure sensor (22) detects the pressure during sampling, converts the pressure into blood viscosity, and performs temperature compensation. The blood sensor (20) confirms that the amount of blood is sufficient; the plunger pump M2 (18) is pulled down to the bottom to draw the diluent; the sampling needle (21) moves upward, and at the same time, the solenoid valve V7 (7), the solenoid valve V10 (10), and the solenoid valve V2 (2 ), the air pump P2 (15) is turned on, the M2 plunger pump (18) moves upward, discharges liquid to clean the outer wall of the sampling needle (21), and at the same time draws the waste liquid into the waste liquid tank (19), then the plunger pump M1 (17) moves upward to pre-discharge a small amount of blood to eliminate the backlash of the plunger pump M1 (17); the solenoid valve V7 (7), the solenoid valve V10 (10), the solenoid valve V2 (2), and the air pump P2 (15) are closed, and the plunger pump M2 (18) is reset; the plunger pump M2 (18) draws the diluent and discharges the liquid into the cleaning sleeve (26), cleans the inner wall and the sampling needle (21), and starts the air pump P2 (15) to draw the waste liquid into the waste liquid tank (19); The sampling needle (21) moves upward, and at the same time, the solenoid valve V10 (10), the solenoid valve V2 (2), and the air pump P2 (15) are opened, and the plunger pump M2 (18) moves upward to discharge liquid to clean the inner wall and needle of the sampling needle (21), and the plunger pump M1 (17) moves upward to the optical coupling position, and at the same time, the waste liquid is pumped into the waste liquid tank (19); the solenoid valve V10 (10), the solenoid valve V2 (2), and the air pump P2 (15) are closed, and the plunger pump M2 (18) is reset; the push knife (29) is inserted into the cleaning tank, the solenoid valve V9 (9) is opened, and the plunger pump M2 (18) is pulled down to extract pure water, and the solenoid valve V9 (9) is closed; the solenoid valve V10 (10 ) is opened, the plunger pump M2 (18) is discharged upward to fill the cleaning tank, the solenoid valve V10 (10) is closed, and the ultrasonic push knife cleaning pool (28) is started to clean the push knife (29); after the cleaning is completed, the solenoid valve V3 (3) and the air pump P2 (15) are opened to pump the waste liquid into the waste liquid tank (19); the solenoid valve V3 (3) and the air pump P2 (15) are closed, and the plunger pump M2 (18) is reset; the push knife (29) moves back and forth in front of the blowing head (31), and at the same time, the solenoid valve V6 (6) and the air pump P1 (14) are opened to blow air to dry the push knife (29); the solenoid valve V6 (6) and the air pump P1 (14) are closed;Open the solenoid valve V8 (8), the solenoid valve V5 (5), and the air pump P3 (16) to discharge the waste liquid in the waste liquid tank (19); close the solenoid valve V8 (8), the solenoid valve V5 (5), and the air pump P3 (16); place the test tube containing the maintenance liquid under the sampling needle (21), the sampling needle (21) moves down to the bottom of the test tube, and the plunger pump M1 (17) pulls down to pump the maintenance liquid into the sampling needle (21). After soaking for a period of time, the solenoid valve V9 (9) is opened, and the plunger pump M2 (18) moves down to extract pure water, and then the solenoid valve V9 (9) is closed; the solenoid valve V10 (10), the solenoid valve V11 (11) and the solenoid valve V12 (12) are closed. The valve V11 (11), the electromagnetic valve V2 (2), and the air pump P2 (15) are opened, and the plunger pump M2 (18) discharges liquid upward to clean the inner wall of the sampling needle (21), and at the same time, draws waste liquid into the waste liquid tank (19); the electromagnetic valve V10 (10), the electromagnetic valve V11 (11), the electromagnetic valve V2 (2), and the air pump P2 (15) are closed, and the plunger pump M1 (17) and the plunger pump M2 (18) are reset. When the air pump P2 (15) draws liquid, if an error occurs, the liquid will enter the countercurrent tank (30). When the liquid is nearly full, the float in the countercurrent tank (30) blocks the air pump P2 (15) suction port. Prevent liquid from entering the air pump P2 (15) and damaging the pump body. The system uses a single needle to collect blood and drip blood, which requires a small amount of blood and no dilution, avoiding the problems of blood dilution and large blood sample consumption caused by the commonly used double-needle system; the pressure sensor (22) is used to detect blood viscosity, and the temperature sensor (23) is used to detect temperature to perform viscosity compensation. Different pushing parameters are used when pushing the film according to different blood viscosities to improve the consistency of the pushing effect (when collecting blood from a test tube, a negative pressure is formed in the pipeline between the plunger pump M1 (17) and the sampling needle 21, and this pressure is detected by the pressure sensor (22). According to the correlation between pressure and blood viscosity, the blood viscosity is output. The temperature sensor (23) is used to detect the temperature and perform viscosity compensation. Different pushing parameters are used when pushing the film according to different blood viscosities to improve the consistency of the pushing effect. The single-machine pushing machine is realized. The pushing blade (29) is cleaned by ultrasonic waves and pure water and blown dry by high-pressure air. The pushing blade (29) is clean and free of contamination. The single-test cost is low. The sampling needle (21) is cleaned by blood cell diluent to maintain the stability of the blood in the sampling needle (21). When the machine is turned off, it is switched to pure water for cleaning to avoid crystallization affecting the life of the pump, valve, and the sampling needle (21). At the same time, the single-test cost is reduced, and the problems of blood dilution and large blood sample consumption in traditional fully automatic film pushing machines are solved.

[0060] The above disclosure is only a preferred embodiment of the tablet pusher fluid system and control method of the present invention. Of course, this cannot be used to limit the scope of the rights of the present invention. Ordinary technicians in this field can understand that implementing all or part of the processes of the above embodiment and making equivalent changes in accordance with the claims of the present invention still fall within the scope of the invention.

Claims

1. A tablet pusher fluid circuit control method, characterized in that: The following steps are involved: The sampling needle is moved downward to collect blood, a small amount of blood is pre-drained to eliminate back gap, and blood is dripped; Clean the sampling needle and push knife, blow dry the push knife, and discharge the waste liquid; Pull down the plunger pump M1 to pump the maintenance liquid into the sampling needle. After soaking for a period of time, the plunger pump M2 draws pure water to fill the liquid system, and start the air pump P2 to fill the corresponding reagent.

2. The tablet pusher fluid circuit control method according to claim 1, wherein ； The specific method of the sampling needle descending to collect blood, pre-draining a small amount of blood to eliminate backlash, and dripping blood is as follows: The sampling needle is inserted into the blood test tube, and the plunger pump M1 is pulled down to draw blood into the sampling needle. At the same time, the pressure sensor detects the pressure during sampling, converts the pressure into blood viscosity, and performs temperature compensation; The sampling needle moves upward, and the plunger pump M2 extracts the diluent and discharges the liquid into the cleaning sleeve to clean the outer wall of the sampling needle. The air pump P2 is started to pump the waste liquid into the waste liquid tank. The plunger pump M1 moves upward to pre-discharge a small amount of blood to eliminate the backlash of the M1 plunger pump; The sampling needle is moved onto the glass slide, and the plunger pump M1 moves upward to drop the required amount of blood onto the glass slide.

3. The tablet pusher fluid circuit control method according to claim 1, It is characterized by: The specific method of cleaning the sampling needle and push knife, drying the push knife, and discharging waste liquid is as follows: The sampling needle moves upward, the plunger pump M2 extracts the diluent and discharges it into the cleaning sleeve to clean the inner wall and the sampling needle, and the air pump P2 is started to pump the waste liquid into the waste liquid tank; The push blade is inserted into the cleaning tank, the plunger pump M2 draws pure water and then discharges the liquid to fill the cleaning tank, ultrasonically cleans the push blade, and the air pump P2 is started to pump the waste liquid into the waste liquid tank; The push knife moves back and forth in front of the blowing head, and the air pump P1 is started to blow air to dry the push knife; Start the air pump P3 to discharge the waste liquid in the waste liquid tank.

4. The tablet pusher fluid circuit control method according to claim 1, wherein: The plunger pump M1 is pulled down to pump the maintenance liquid into the sampling needle. After soaking for a period of time, the plunger pump M2 draws pure water to fill the liquid system. The air pump P2 is started to fill the corresponding reagent. Place the test tube containing the maintenance liquid under the sampling needle, pull down the plunger pump M1 to pump the maintenance liquid into the sampling needle. After soaking for a period of time, the plunger pump M2 draws pure water to fill the liquid system. When the liquid levels in the diluent tank and pure water tank are low, start the air pump P2 to fill the corresponding reagents.

5. A tablet pusher fluid circuit system, applied to the tablet pusher fluid circuit control method according to any one of claims 1 to 4, characterized in that ； Including solenoid valve V1, solenoid valve V2, solenoid valve V3, solenoid valve V4, solenoid valve V5, solenoid valve V6, solenoid valve V7, solenoid valve V8, solenoid valve V9, solenoid valve V10, solenoid valve V11, solenoid valve V12, solenoid valve V13, air pump P1, air pump P2, air pump P3, plunger pump M1, plunger pump M2, waste liquid tank, blood sensor, sampling needle, pressure sensor, temperature sensor, diluent tank, pure water tank, cleaning cover, cleaning pool, ultrasonic push knife cleaning pool, push knife, blowing head and countercurrent tank; The solenoid valve V8 is connected to the air pump P2, the air pump P3 and the countercurrent tank respectively, the waste liquid tank is connected to the countercurrent tank, the solenoid valve V1, the solenoid valve V2, the solenoid valve V3, the solenoid valve V4 and the solenoid valve V5 respectively, the air pump P1, the solenoid valve V6 and the blowing head are connected in sequence, the push knife is arranged on one side of the blowing head, the ultrasonic push knife cleaning pool is connected to the solenoid valve V3 and the solenoid valve V4 respectively, the solenoid valve V2 is connected to the cleaning sleeve, and the solenoid valve V1 is connected to the cleaning pool. The solenoid valve V7 is respectively connected to the cleaning sleeve, the air blowing head and the solenoid valve V11, the solenoid valve V11, the solenoid valve V10, the solenoid valve V9 and the plunger pump M2 are connected in sequence, the sampling needle, the blood sensor, the pressure sensor, the plunger pump M1 and the solenoid valve V11 are connected in sequence, the solenoid valve V9 is respectively connected to the diluent tank and the pure water tank, the solenoid valve V12 is respectively connected to the temperature sensor and the waste liquid tank, and the solenoid valve V13 is respectively connected to the pure water tank and the waste liquid tank.

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