A chemical sampling device

Abstract

The present invention discloses a chemical drug sampling device, comprising a frame, a guide rail and a driving unit are respectively installed on the frame, a lifting mechanism is installed on the guide rail, and the lifting mechanism is controlled by the driving unit to realize the lifting function, a solenoid valve is installed on the lifting mechanism, a limit mechanism is arranged on the upper end of the solenoid valve, a drug unloading pipe is arranged on the bottom of the solenoid valve, a drug extraction needle is installed in the drug unloading pipe, the upper end of the drug extraction needle passes through the solenoid valve, and the needle tip of the drug extraction needle is used to pierce tablets. The present invention can effectively sample rough tablets and tablets with tiny pores, and can detect the height position of the tablets to provide feedback information.

Description

Technical Field

[0001] The invention relates to the technical field of laboratory chemical drug sampling equipment, in particular to a chemical drug sampling device. Background Art

[0002] In the process of chemical experiments, sampling devices are often used to sample chemical tablets. Most of the sampling devices currently used are vacuum sampling devices, which have the following defects: 1. If the tablets have an uneven surface or have tiny pores, they cannot be sucked. 2. When the tablets are gradually reduced, the suction nozzle of the vacuum sampling device cannot detect the height of the tablets, resulting in failure to take the medicine, and there is no feedback on the failure information. Summary of the invention

[0003] The present invention aims to provide a chemical medicine sampling device which can effectively sample rough tablets with tiny pores and can detect the height position of the tablets and provide feedback information.

[0004] To achieve the above objectives, the present invention is implemented and provided through the following technical solutions: a chemical drug sampling device, comprising a frame, on which a guide rail and a drive unit are respectively installed, a lifting mechanism is installed on the guide rail, and the lifting mechanism is controlled by the drive unit to realize the lifting function, the lifting mechanism is installed with a solenoid valve, a limiting mechanism is arranged at the upper end of the solenoid valve, a drug unloading tube is arranged at the bottom of the solenoid valve, a drug extraction needle is installed in the drug unloading tube, the upper end of the drug extraction needle passes through the solenoid valve, and the needle tip of the drug extraction needle is used for pricking tablets.

[0005] Furthermore: first limit switches are respectively arranged on the racks near both ends of the guide rail.

[0006] Furthermore: the driving unit includes a driving motor and a driving circuit.

[0007] Furthermore: the lifting mechanism includes a slide plate installed on the guide rail, and an L-shaped plate is installed on one side of the slide plate.

[0008] Furthermore: the limit mechanism includes an adjusting knob, an adjusting screw and a limit mounting plate, the adjusting screw passes through the L-shaped plate and one end of the adjusting screw that leaks out from the upper end of the L-shaped plate is screwed into the adjusting knob, the lower end of the adjusting screw is connected to the limit mounting plate, and a second limit switch is installed on the lower end surface of the limit mounting plate.

[0009] Furthermore: a circular limit contact block is also installed on the top of the solenoid valve, and the circular limit contact block and the solenoid valve are arranged concentrically.

[0010] Furthermore: the upper end of the medicine taking needle passes through the electromagnetic valve and the circular limit contact block and is fixed on the limit mounting plate.

[0011] Furthermore, the driving circuit includes a control chip, which controls the driving motor to drive the slide plate to move up and down along the guide rail, and the signal end of the control chip is respectively connected to the first limit switch, the second limit switch and the solenoid valve.

[0012] Furthermore: one end of the first limit switch is connected to a knob, and the knob is arranged on the outside of the frame, the first limit switch is arranged on the inside of the frame, and a notch is opened on the frame between the knob and the first limit switch.

[0013] Beneficial effects of the present invention:

[0014] A chemical sampling device:

[0015] The driving unit controls the lifting mechanism to move downward on the guide rail, driving the limiting mechanism, the solenoid valve, the medicine unloading tube and the medicine taking needle to move downward as a whole. When the medicine taking needle reaches the surface of the tablet, it pierces the tablet under the push of the lifting mechanism. The limiting mechanism controls the number of tablets pierced by the medicine taking needle. The driving unit controls the limiting mechanism and the medicine taking needle to pierce the tablet and then detects the height of the tablet and feeds it back to the driving unit to adjust the height of the lifting mechanism. When the tablet is taken out, the solenoid valve is energized to push the tablet out of the medicine unloading tube through the medicine unloading tube, completing the entire medicine taking process, so that the entire process can sample rough tablets and tablets with tiny pores. At the same time, the height of the tablet is detected and fed back to the driving unit to adjust the height of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the side structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the main structure of the present invention.

[0018] In the figure: 1-frame, 2-guide rail, 3-lifting mechanism, 4-driving unit, 5-solenoid valve, 6-limiting mechanism, 7-drug unloading tube, 8-drug taking needle, 9-knob, 10-first limit switch, 11-slot, 31-slide plate, 32-L-shaped plate, 51-circular limit contact block, 61-adjusting knob, 62-adjusting screw, 63-limit mounting plate, 64-second limit switch. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 , 2 As shown, a chemical drug sampling device includes a frame 1, on which a guide rail 2 and a driving unit 4 are respectively installed, a lifting mechanism 3 is installed on the guide rail 2, and the lifting mechanism 3 is controlled by the driving unit 4 to realize the lifting function, the lifting mechanism 3 is installed with a solenoid valve 5, a limiting mechanism 6 is arranged at the upper end of the solenoid valve 5, a drug unloading pipe 7 is arranged at the bottom of the solenoid valve 5, a drug extraction needle 8 is installed in the drug unloading pipe 7, the upper end of the drug extraction needle 8 passes through the solenoid valve 5, and the needle tip of the drug extraction needle 8 is used for pricking tablets.

[0021] The driving unit 4 controls the lifting mechanism 3 to move downward on the guide rail 2, driving the limiting mechanism 6, the solenoid valve 5, the medicine unloading tube 7 and the medicine taking needle 8 to move downward as a whole. When the medicine taking needle 8 reaches the surface of the tablet, it pierces the tablet under the push of the lifting mechanism 3. The limiting mechanism 6 controls the number of tablets pierced by the medicine taking needle 8. After the driving unit 4 controls the limiting mechanism 6 and the medicine taking needle 8 to pierce the tablet, the height of the tablet is detected and fed back to the driving unit 4 to adjust the height of the lifting mechanism 3. After the tablet is taken out, the solenoid valve 5 is energized to push the tablet out of the medicine unloading tube 7 through the medicine unloading tube 7, completing the entire medicine taking process, so that the entire process can sample rough tablets and tablets with tiny pores. At the same time, the height of the tablet is detected and fed back to the driving unit 4 to adjust the height of the lifting mechanism 3.

[0022] The frame 1 near the two ends of the guide rail 2 is respectively provided with a first limit switch 10, the drive unit 4 includes a drive motor and a drive circuit, the lifting mechanism 3 includes a slide plate 31 installed on the guide rail 2, and an L-shaped plate 32 is installed on one side of the slide plate 31, the limit mechanism 6 includes an adjusting knob 61, an adjusting screw 62 and a limit mounting plate 63, the adjusting screw 62 passes through the L-shaped plate 32 and one end of the adjusting screw 62 that leaks out of the upper end of the L-shaped plate 32 is screwed into the adjusting knob 61, the lower end of the adjusting screw 62 is connected to the limit mounting plate 63, and the lower end surface of the limit mounting plate 63 is installed with a second limit switch 64, and a circular limit contact block 51 is also installed on the top of the solenoid valve 5, and the circular limit contact block 51 is arranged concentrically with the electromagnetic valve 5, the upper end of the medicine taking needle 8 passes through the electromagnetic valve 5 and the circular limit contact block 51 and is fixed on the limit mounting plate 63, the driving circuit includes a control chip, the control chip controls the driving motor to drive the slide plate 31 to move up and down along the guide rail 2, the signal end of the control chip is respectively connected to the first limit switch 10, the second limit switch 64 and the electromagnetic valve 5, wherein the control chip is one of the single-chip microcomputers ST89C51 and SMT32 series, the first limit switch 10 is connected to the side of the knob 9, and the knob 9 is arranged on the outside of the frame 1, the first limit switch 10 is arranged on the inside of the frame 1, and a slot 11 is opened on the frame 1 between the knob 9 and the first limit switch 10. The function of the single chip microcomputer is to detect the height and quantity of the tablets after the medicine taking needle 8 pierces the tablets, and then feedback the information to the second limit switch 64 of the limit mechanism 6 inside the single chip microcomputer to switch the driving motor to flip so that the slide plate 31 and the L-shaped plate 32 of the lifting mechanism 3 move upward to complete the sampling of the tablets. At the same time, when the slide plate 31 and the L-shaped plate 32 of the lifting mechanism 3 move upward to a certain height or the lowest point, the first limit switch 10 is triggered, and the signal is fed back to the single chip microcomputer so that the lifting mechanism 3 will not deviate from the guide rail 2, effectively protecting the chemical sampling device. A slot 11 is provided on the frame 1 so that the first limit switch 10 between the guide rails 2 can be adjusted by adjusting the knob 9 to control the relative movement spacing of the lifting mechanism 3, so as to better adapt to the sampling of bottled tablets of different heights. By adjusting the adjustment knob 61 on the limit mechanism 6, the second limit switch 64 and the circular limit contact block 51 can be widened or narrowed, and the height and number of tablets taken by the medicine removal needle 8 are further adjusted. At the same time, the circular limit contact block 51 can better trigger the second limit switch 64.

[0023] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A chemical sampling device, comprising a frame (1), characterized in that: The frame (1) is respectively mounted with a guide rail (2) and a driving unit (4); a lifting mechanism (3) is mounted on the guide rail (2), and the lifting mechanism (3) is controlled by the driving unit (4) to realize a lifting function; the lifting mechanism (3) is mounted with a solenoid valve (5); a limit mechanism (6) is arranged at the upper end of the solenoid valve (5); a drug discharge pipe (7) is arranged at the bottom of the solenoid valve (5); a drug extraction needle (8) is installed in the drug discharge pipe (7); the upper end of the drug extraction needle (8) passes through the solenoid valve (5); and the needle tip of the drug extraction needle (8) is used for pricking tablets; First limit switches (10) are respectively arranged on the frame (1) near the two ends of the guide rail (2); The limit mechanism (6) comprises an adjusting knob (61), an adjusting screw (62) and a limit mounting plate (63); the adjusting screw (62) passes through the L-shaped plate (32) and one end of the adjusting screw (62) protruding from the upper end of the L-shaped plate (32) is screwed into the adjusting knob (61); the lower end of the adjusting screw (62) is connected to the limit mounting plate (63); and a second limit switch (64) is mounted on the lower end surface of the limit mounting plate (63); The first limit switch (10) is connected to a knob (9) on its side, and the knob (9) is arranged on the outside of the frame (1), and the first limit switch (10) is arranged on the inside of the frame (1), and a notch (11) is provided on the frame (1) between the knob (9) and the first limit switch (10).

2. A chemical sampling device according to claim 1, characterized in that: The driving unit (4) comprises a driving motor and a driving circuit.

3. A chemical sampling device according to claim 1, characterized in that: The lifting mechanism (3) comprises a slide plate (31) mounted on a guide rail (2), and an L-shaped plate (32) is mounted on one side of the slide plate (31).

4. A chemical sampling device according to claim 1, characterized in that: A circular limit contact block (51) is also installed on the top of the solenoid valve (5), and the circular limit contact block (51) and the solenoid valve (5) are arranged concentrically.

5. A chemical sampling device according to claim 1, characterized in that: The upper end of the medicine taking needle (8) passes through the electromagnetic valve (5) and the circular limit contact block (51) and is fixed on the limit mounting plate (63).

6. A chemical sampling device according to claim 2, characterized in that: The drive circuit comprises a control chip, which controls the drive motor to rotate and drive the slide plate (31) to move up and down along the guide rail (2), and the signal end of the control chip is respectively connected to the first limit switch (10), the second limit switch (64) and the solenoid valve (5).

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