A sampling device for pharmaceutical testing

Abstract

The present invention relates to the field of pharmaceutical equipment technology, and in particular to a sampling device for pharmaceutical testing. The present invention provides a sampling device for pharmaceutical testing that can clean residual samples and prevent different types of samples from mixing together. A sampling device for pharmaceutical testing includes a sampling cylinder, the sampling cylinder is made of a transparent material, and also includes a sampling mechanism and a cleaning mechanism. The upper part of the sampling cylinder is provided with a sampling mechanism for automatically sampling drugs, and the upper left part of the sampling cylinder is provided with a cleaning mechanism for cleaning residual drugs in the sampling cylinder. The present invention can draw in samples through the sampling cylinder by moving the piston block to the upper right, thereby achieving the effect of automatic sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of pharmaceutical equipment, in particular to a sampling device for pharmaceutical testing. Background Art

[0002] Before conducting pharmaceutical testing, people need to take samples of the drugs.

[0003] Patent publication number CN212483008U discloses a sampling device for biopharmaceutical testing, including an L-shaped tube, the bottom end of the L-shaped tube is set to a conical structure, the sealing sliding sleeve in the L-shaped tube is provided with a piston, a first cross bar is fixedly installed on one side of the piston, a first rectangular hole is opened on the top of the first cross bar, and an inclined connecting rod is hinged on the inner wall of the first rectangular hole away from the piston. When in use, hold the U-shaped rod and insert the bottom end of the L-shaped tube into the sample barrel, and then collect the sample into the collection box through the L-shaped tube. In this way, the sample can be sampled, but after the sampling is completed, the sampling device for biopharmaceutical testing cannot clean the sample remaining in the L-shaped tube. The residual sample will adhere to the inner wall of the L-shaped tube. The next time sampling is performed, different types of samples are easily mixed together, resulting in errors in pharmaceutical testing.

[0004] In view of the above shortcomings, a sampling device for pharmaceutical testing is developed, which can clean up residual samples and avoid mixing of different types of samples. Summary of the Invention

[0005] In order to overcome the disadvantage that after sampling, the existing device is difficult to clean the residual sample, and the two samples are easily mixed together during the next sampling, resulting in errors in pharmaceutical testing, the present invention provides a sampling device for pharmaceutical testing that can clean the residual sample and avoid mixing of different types of samples.

[0006] A sampling device for pharmaceutical testing includes a sampling cylinder made of transparent material, a sampling mechanism and a cleaning mechanism. The upper part of the sampling cylinder is provided with a sampling mechanism for automatically sampling drugs, and the left side of the upper part of the sampling cylinder is provided with a cleaning mechanism for cleaning residual drugs in the sampling cylinder.

[0007] Furthermore, the sampling mechanism includes an electric push rod and a piston block. The electric push rod is connected to the top of the sampling cylinder, and the piston block is connected to the telescopic rod of the electric push rod. The piston block is slidingly connected to the inner wall of the sampling cylinder. The piston block moves to the upper right to draw the medicine into the sampling cylinder.

[0008] Furthermore, the cleaning mechanism includes a one-way valve, an air storage shell, a piston rod and a return spring. The left side of the upper part of the sampling cylinder is connected to a one-way valve for preventing the gas in the sampling cylinder from leaking out. The left side of the upper part of the sampling cylinder is connected to an air storage shell. The air storage shell is connected to the sampling cylinder. The air storage shell is located to the upper right of the one-way valve. A piston rod is slidably connected to the air storage shell. A return spring is connected between the left part of the piston rod and the left side of the air storage shell. The return spring is wound on the piston rod. External gas enters the sampling cylinder through the one-way valve, and the piston block moves to the upper right to squeeze the gas. The gas enters the air storage shell, and the piston rod is squeezed to the left by the gas.

[0009] Furthermore, it also includes a replacement mechanism for sampling different types of medicines. The replacement mechanism includes a rotating block and a rotating shaft. The left and right sides of the lower part of the sampling barrel are rotatably connected to the rotating shaft. The rotating blocks are connected to the rotating shafts, and the upper sides of the rotating blocks are in contact with the lower side of the sampling barrel.

[0010] Furthermore, it also includes a vibration mechanism for knocking the sampling tube, the vibration mechanism includes a bracket, a guide rod, a sliding frame, a knocking spring, a knocking block and a limit rod, the upper right side of the sampling tube is connected to the bracket, the bracket is evenly connected with a fan-shaped block, the top of the bracket is connected to the guide rod, the guide rod is slidably connected to the sliding frame, the left side of the sliding frame is slidably connected to the bracket, the left side of the bracket is slidably connected to the knocking block, the left side of the knocking block contacts the right wall of the sampling tube, and there is a space between the knocking block and the lower left side of the sliding frame. A knocking spring is connected, and the knocking spring is wound on the knocking block. The front right side of the knocking block is connected to a limit rod, and the limit rod contacts the fan-shaped block on the uppermost side of the bracket, and drives the knocking block and the limit rod to move downward through the sliding frame. The fan-shaped block on the uppermost side of the bracket squeezes the limit rod to the right, and the limit rod drives the knocking block to move to the right. The knocking spring is compressed, and when the limit rod moves downward away from the fan-shaped block on the bracket, the knocking spring rebounds and drives the knocking block and the limit rod to move to the left, and the knocking block knocks the sampling cylinder.

[0011] Furthermore, it also includes a dispersing mechanism for dispersing powdered medicines, which includes a rotating rod, a small gear, a large gear and a dispersing rod. The outer wall of the middle part of the sampling tube is rotatably connected to the large gear, and the left and right sides of the bottom of the large gear are connected to the dispersing rods. The upper right part of the sampling tube is rotatably connected to the rotating rod, and the lower side of the rotating rod is connected to the small gear. The small gear is engaged with the large gear, and the rotating rod drives the small gear to rotate. The rotation of the small gear drives the large gear to drive the dispersing rod to rotate, and the rotation of the dispersing rod disperses the powder.

[0012] Furthermore, it also includes a limiting mechanism for limiting the rotating shaft, the limiting mechanism includes a compression spring, a locking rod and a fixed rod, the left and right sides of the lower part of the sampling tube are connected to the fixed rods, the lower part of the fixed rods are slidably connected to the locking rods, the locking rods are inserted into the lower part of the rotating shaft, and compression springs are connected between the locking rods and the inner side of the lower part of the fixed rods, and the compression springs are wound on the locking rods.

[0013] Furthermore, a handle is included, and the upper and lower sides of the left part of the electric push rod are connected with the handle.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention can draw in samples through the sampling tube by moving the piston block to the upper right, thereby achieving an automatic sampling effect.

[0015] 2. The present invention squeezes the gas in the gas storage shell to the right through the piston rod, which can clean the powdered medicine adsorbed on the inner wall of the sampling tube, avoiding the mixing of the sample to be sampled next time with the sample remaining on the inner wall of the sampling tube, and preventing errors in pharmaceutical testing.

[0016] 3. The present invention can change the size of the sampling port by rotating the rotating block forward and reverse, thereby achieving the effect of sampling different types of medicines.

[0017] 4. The present invention can knock the sampling tube by moving the knocking block to the left, thereby causing the sampling tube to vibrate and causing the sample adsorbed on the inner wall of the sampling tube to be shaken off, thereby improving the effect of cleaning the residual sample on the inner wall of the sampling tube.

[0018] 5. The rotation of the breaking rod can break up the powdered medicine, which is convenient for the sampling tube to insert the powdered medicine.

[0019] 6. The present invention utilizes a locking rod to limit the rotating shaft, thereby preventing the rotating block and the rotating shaft from rotating and improving the stability of the rotating block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the sampling tube of the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the sampling cylinder, electric push rod and piston block of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the replacement mechanism of the present invention.

[0025] Figure 6 It is a partial three-dimensional structural schematic diagram of the replacement mechanism of the present invention.

[0026] Figure 7 This is a schematic diagram of the first three-dimensional structure of the vibration mechanism of the present invention.

[0027] Figure 8This is a schematic diagram of the second three-dimensional structure of the vibration mechanism of the present invention.

[0028] Figure 9 It is a schematic diagram of the three-dimensional structure of the breaking up mechanism of the present invention.

[0029] Figure 10 This is a schematic diagram of the first three-dimensional structure of the limiting mechanism of the present invention.

[0030] Figure 11 This is a schematic diagram of the second three-dimensional structure of the limiting mechanism of the present invention.

[0031] In the accompanying drawings: 1_sampling cylinder, 2_sampling mechanism, 21_electric push rod, 22_piston block, 3_cleaning mechanism, 31_one-way valve, 32_air storage shell, 33_piston rod, 34_reset spring, 4_replacement mechanism, 41_rotating block, 42_rotating shaft, 5_vibration mechanism, 51_bracket, 52_guide rod, 53_sliding frame, 54_knocking spring, 55_knocking block, 56_limiting rod, 6_breaking mechanism, 61_rotating rod, 62_small gear, 63_large gear, 64_breaking rod, 7_limiting mechanism, 71_compression spring, 72_locking rod, 73_fixing rod. DETAILED DESCRIPTION

[0032] The following description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0033] Example 1

[0034] A sampling device for pharmaceutical testing, such as Figure 1 and Figure 2 As shown, it includes a sampling tube 1, a sampling mechanism 2 and a cleaning mechanism 3. The sampling tube 1 is made of transparent material. The sampling mechanism 2 is provided on the upper part of the sampling tube 1. The sampling mechanism 2 can automatically sample the medicines. The cleaning mechanism 3 is provided on the left side of the upper part of the sampling tube 1. The cleaning mechanism 3 can clean the residual medicines in the sampling tube 1.

[0035] like Figure 1 and Figure 3 As shown, the sampling mechanism 2 includes an electric push rod 21 and a piston block 22. The electric push rod 21 is installed on the top of the sampling tube 1. The piston block 22 is connected to the telescopic rod of the electric push rod 21. The piston block 22 is slidably connected to the inner wall of the sampling tube 1.

[0036] like Figure 1 As shown, a handle is also included. The upper and lower sides of the left side of the electric push rod 21 are connected with handles, which make it easier for people to carry the electric push rod 21.

[0037] like Figure 1 and Figure 4As shown, the cleaning mechanism 3 includes a one-way valve 31, an air storage shell 32, a piston rod 33 and a reset spring 34. The one-way valve 31 is installed on the upper left side of the sampling cylinder 1. The one-way valve 31 can prevent the gas in the sampling cylinder 1 from leaking out. The air storage shell 32 is fixed to the upper left side of the sampling cylinder 1. The air storage shell 32 is connected to the sampling cylinder 1. The air storage shell 32 is located to the upper right of the one-way valve 31. The piston rod 33 is slidably connected to the air storage shell 32. A reset spring 34 is connected between the left part of the piston rod 33 and the left side of the air storage shell 32. The reset spring 34 is wound around the piston rod 33.

[0038] When people need to sample powdered medicines before conducting pharmaceutical testing, they can use this device to operate. First, turn on the electric push rod 21, so that the telescopic rod of the electric push rod 21 extends, and the extension movement of the telescopic rod of the electric push rod 21 drives the piston block 22 to move to the lower left. At this time, the interior of the sampling cylinder 1 is in a negative pressure state, and the external gas enters the sampling cylinder 1 through the one-way valve 31. Then, the lower part of the sampling cylinder 1 is inserted into the barrel filled with powdered medicines, and then the telescopic rod of the electric push rod 21 is controlled to retract. The retraction movement of the telescopic rod of the electric push rod 21 drives the piston block 22 to move to the upper right, and the piston block 22 moves to the upper right to draw the powdered medicine into the sampling cylinder 1. The sampling tube 1 is made of transparent material, so the amount of powdered medicine drawn into the sampling tube 1 can be observed, and an appropriate amount of powdered medicine can be drawn in. When the amount of powdered medicine reaches the standard amount, the piston block 22 is controlled by the telescopic rod of the electric push rod 21 to stop moving to the upper right. At this time, the piston block 22 is located at the lower left of the one-way valve 31, so that the powdered medicine can be sampled. When the piston block 22 moves to the upper right, the piston block 22 will also squeeze the gas in the sampling tube 1. Since the one-way valve 31 will prevent the gas from leaking out, the gas in the sampling tube 1 will be concentrated in the upper part of the sampling tube 1. Then the lower part of the sampling tube 1 is pulled out from the barrel filled with powdered medicine, and then the lower part of the sampling tube 1 is aligned with the collecting The container mouth of the sample is opened, and then the electric push rod 21 is controlled to move the telescopic rod to drive the piston block 22 to move to the lower left, and the sample in the sampling cylinder 1 is pushed into the container for collecting the sample, but a small amount of powdered medicine will be adsorbed on the inner wall of the sampling cylinder 1. Then the electric push rod 21 is controlled to move the telescopic rod to move the piston block 22 to the upper right. The piston block 22 moves to the upper right to squeeze the gas in the upper part of the sampling cylinder 1 into the gas storage shell 32, and the gas squeezes the piston rod 33 to the left, and the reset spring 34 is stretched. When the piston block 22 moves and resets, and is located at the upper right of the gas storage shell 32, since the lower part of the sampling cylinder 1 is connected to the outside, under the elastic action of the reset spring 34, the piston rod 33 It will move to the right, and the piston rod 33 will move to the right to squeeze the gas in the gas storage shell 32 to the right, so that the gas enters the sampling cylinder 1 and is discharged from the lower part of the sampling cylinder 1. When the gas is squeezed into the sampling cylinder 1, the gas will impact the powdered medicine adsorbed on the inner wall of the sampling cylinder 1, so that the powder remaining on the inner wall of the sampling cylinder 1 can be cleaned, and the cleaned powdered medicine will flow into the container for collecting samples. In this way, after the sampling is completed, the gas in the gas storage shell 32 can be used to clean the powdered medicine adsorbed on the inner wall of the sampling cylinder 1, so as to avoid the sample remaining on the inner wall of the sampling cylinder 1 from mixing with the sample of the next sampling, which is beneficial for people to conduct pharmaceutical testing.

[0039] Example 2

[0040] On the basis of Example 1, Figure 1 、 Figure 5 and Figure 6As shown, a replacement mechanism 4 is also included. The replacement mechanism 4 includes a rotating block 41 and a rotating shaft 42. There are two rotating shafts 42, and the two rotating shafts 42 are rotatably connected to the left and right sides of the lower part of the sampling tube 1. There are two rotating blocks 41, and the two rotating blocks 41 are respectively connected to the rotating shafts 42. The upper sides of the rotating blocks 41 are in contact with the lower side of the sampling tube 1.

[0041] When people need to sample different samples, they can use the replacement mechanism 4 to operate. When the sampling tube 1 is inserted into the barrel containing powdered medicine, the rotating block 41 and the rotating shaft 42 will also be located in the powdered medicine. Then, when sampling the powdered medicine, the powdered medicine will enter the sampling tube 1 through the rotating block 41. Since the two rotating blocks 41 are fitted together to form a closed shape, the rotating block 41 will resist large particles of medicine or agglomerated medicine in the powdered medicine, thereby preventing large particles of medicine or agglomerated medicine from entering the sampling tube 1. When people need to sample large particles of medicine, they rotate the rotating shaft 42, and then the rotating shaft 42 drives the rotating block 41 to rotate and open, so that the lower side of the sampling tube 1 is exposed to the air, which can expand the sampling port. Then the sampling tube 1 can be inserted into the large particles of medicine for sampling. After the sampling is completed, the rotating shaft 42 and the rotating block 41 are reversed and reset. Repeat the above operation to sample different types of medicine.

[0042] like Figure 1 、 Figure 7 and Figure 8 As shown, it also includes a vibration mechanism 5, which includes a bracket 51, a guide rod 52, a sliding frame 53, a knocking spring 54, a knocking block 55 and a limit rod 56. The bracket 51 is fixed to the upper right side of the sampling tube 1, and a plurality of fan-shaped blocks are connected to the bracket 51. The guide rod 52 is welded to the top of the bracket 51, and the sliding frame 53 is slidably connected to the guide rod 52. The left part of the sliding frame 53 is slidably connected to the bracket 51, and the left part of the bracket 51 is slidably connected to the knocking block 55. The left side of the knocking block 55 contacts the right wall of the sampling tube 1, and a knocking spring 54 is connected between the knocking block 55 and the lower left side of the sliding frame 53. The knocking spring 54 is wound on the knocking block 55, and the limit rod 56 is connected to the front side of the right part of the knocking block 55. The limit rod 56 contacts the fan-shaped block on the uppermost side of the bracket 51.

[0043] When it is necessary to enhance the cleaning effect of the residual sample on the inner wall of the sampling tube 1, the vibration mechanism 5 can be used to operate. First, the sliding frame 53 is moved to the lower left. The sliding frame 53 moves to the lower left, driving the knocking spring 54, the knocking block 55 and the limiting rod 56 to move to the lower left. The uppermost fan-shaped block of the bracket 51 squeezes the limiting rod 56 to the right, and the limiting rod 56 drives the knocking block 55 to move to the right. The knocking spring 54 is compressed, and when the limiting rod 56 moves to the lower left away from the fan-shaped block on the bracket 51, the knocking spring 54 rebounds and drives the knocking block 55 and the limiting rod 56 to move to the left. The knocking block 55 moves to the left to knock the sampling tube 1. Since there are multiple fan-shaped blocks arranged vertically, during the movement of the knocking block 55 to the lower left, During the process, the knocking block 55 will repeatedly move left and right, so that the knocking block 55 repeatedly knocks the sampling tube 1, which can make the sampling tube 1 vibrate, thereby shaking off the sample adsorbed on the inner wall of the sampling tube 1. When the sample remaining on the inner wall of the sampling tube 1 flows out, the limit rod 56 is pulled to the right, so that the limit rod 56 is away from the fan-shaped block on the bracket 51, and then the knocking spring 54, the knocking block 55 and the limit rod 56 are driven to the upper right by the sliding bracket 53, and then the limit rod 56 is released. In summary, the knocking block 55 can be used to knock on the sampling tube 1, so that the sampling tube 1 vibrates, and the sample adsorbed on the inner wall of the sampling tube 1 is shaken off, thereby enhancing the effect of cleaning the residual sample on the inner wall of the sampling tube 1.

[0044] like Figure 1 and Figure 9 As shown, it also includes a breaking mechanism 6, which includes a rotating rod 61, a small gear 62, a large gear 63 and a breaking rod 64. The large gear 63 is rotatably connected to the outer wall of the middle part of the sampling tube 1. There are two breaking rods 64, and the two breaking rods 64 are respectively fixed to the left and right sides of the bottom of the large gear 63. The breaking rod 64 can break up the powder by rotating. The rotating rod 61 is rotatably connected to the upper right part of the sampling tube 1. The small gear 62 is connected to the lower side of the rotating rod 61, and the small gear 62 is engaged with the large gear 63.

[0045] Before inserting the powdered medicine into the lower part of the sampling tube 1, when the powdered medicine needs to be broken up, the breaking mechanism 6 can be used to operate it. First, the small gear 62 is rotated by the rotating rod 61, and then the large gear 63 is driven to rotate. The rotation of the large gear 63 drives the breaking rod 64 to rotate, and then the sampling tube 1 can be moved downward to be inserted into the powdered medicine. The downward movement of the sampling tube 1 drives the large gear 63 and the breaking rod 64 to move downward. When the breaking rod 64 moves downward and contacts the powdered medicine, the breaking rod 64 will stir the powdered medicine, so that the powdered medicine can be broken up and the powdered medicine becomes loose, which is conducive to the insertion of the sampling tube 1 into the powdered medicine and improves the sampling efficiency. When the sampling tube 1 is inserted into the powdered medicine, stop rotating the rotating rod 61 and the small gear 62, and then stop rotating the large gear 63 and the breaking rod 64.

[0046] like Figure 1 、 Figure 10 and Figure 11 As shown, it also includes a limiting mechanism 7, which includes a compression spring 71, a locking rod 72 and a fixed rod 73. There are two fixed rods 73, and the two fixed rods 73 are respectively connected to the left and right sides of the lower part of the sampling tube 1. There are two locking rods 72, and the two locking rods 72 are respectively slidably connected to the lower part of the fixed rod 73. The locking rods 72 are both inserted into the lower part of the rotating shaft 42. Compression springs 71 are connected between the locking rod 72 and the inner side of the lower part of the fixed rod 73, and the compression springs 71 are both wound around the locking rod 72.

[0047] The locking rod 72 is released, and the compression spring 71 is compressed, and then the shaft 42 can be rotated. When the shaft 42 is reversed and reset, the locking rod 72 is released, and the compression spring 71 rebounds and drives the locking rod 72 to move toward the side close to each other, so that the locking rod 72 is inserted into the lower part of the shaft 42. Repeat the above operation to use the locking rod 72 to limit the shaft 42, prevent the shaft 42 and the rotating block 41 from rotating, improve the stability of the rotating block 41, and use it for sampling.

[0048] The above-described embodiments merely represent preferred embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications, improvements, and substitutions without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A sampling device for pharmaceutical testing, comprising a sampling tube (1), the sampling tube (1) being made of a transparent material, characterized in that: The device further comprises a sampling mechanism (2) and a cleaning mechanism (3), wherein the upper portion of the sampling cylinder (1) is provided with a sampling mechanism (2) for automatically sampling the medicine, and the left portion of the upper portion of the sampling cylinder (1) is provided with a cleaning mechanism (3) for cleaning the medicine remaining in the sampling cylinder (1); The sampling mechanism (2) includes an electric push rod (21) and a piston block (22). The top of the sampling tube (1) is connected to the electric push rod (21). The piston block (22) is connected to the telescopic rod of the electric push rod (21). The piston block (22) is slidably connected to the inner wall of the sampling tube (1). The piston block (22) moves to the upper right to draw the medicine into the sampling tube (1). The cleaning mechanism (3) includes a one-way valve (31), an air storage shell (32), a piston rod (33) and a return spring (34). The left side of the upper portion of the sampling cylinder (1) is connected to a one-way valve (31) for preventing the gas in the sampling cylinder (1) from leaking out. The left side of the upper portion of the sampling cylinder (1) is connected to an air storage shell (32). The air storage shell (32) is connected to the sampling cylinder (1). The air storage shell (32) is located above the right side of the one-way valve (31). The piston rod (33) is connected to the air storage shell (32) in a sliding manner. A return spring (34) is connected between the left side of the piston rod (33) and the left side of the air storage shell (32). The return spring (34) is wound on the piston rod (33). External gas enters the sampling cylinder (1) through the one-way valve (31). The piston block (22) moves to the upper right to squeeze the gas. The gas enters the air storage shell (32), and the piston rod (33) is squeezed to the left by the gas. The apparatus further comprises a replacement mechanism (4) for sampling different types of medicines. The replacement mechanism (4) comprises a rotating block (41) and a rotating shaft (42). The left and right sides of the lower portion of the sampling tube (1) are both rotatably connected to the rotating shaft (42). The rotating blocks (41) are both connected to the rotating shaft (42). The upper sides of the rotating blocks (41) are in contact with the lower side of the sampling tube (1). Also included is a vibration mechanism (5) for knocking the sampling tube (1), the vibration mechanism (5) includes a bracket (51), a guide rod (52), a sliding frame (53), a knocking spring (54), a knocking block (55) and a limit rod (56), the upper right side of the sampling tube (1) is connected to the bracket (51), the bracket (51) is evenly connected to the fan-shaped block, the top of the bracket (51) is connected to the guide rod (52), the guide rod (52) is slidably connected to the sliding frame (53), the left side of the sliding frame (53) is slidably connected to the bracket (51), the left side of the bracket (51) is slidably connected to the knocking block (55), the left side of the knocking block (55) contacts the right wall of the sampling tube (1), and the knocking block (55) and the left side of the lower part of the sliding frame (53) are in contact. A knocking spring (54) is connected, and the knocking spring (54) is wound on the knocking block (55). The right front side of the knocking block (55) is connected to a limit rod (56). The limit rod (56) contacts the fan-shaped block on the upper side of the bracket (51), and drives the knocking block (55) and the limit rod (56) to move downward through the sliding frame (53). The fan-shaped block on the upper side of the bracket (51) squeezes the limit rod (56) to the right, and the limit rod (56) drives the knocking block (55) to move to the right. The knocking spring (54) is compressed, and when the limit rod (56) moves downward away from the fan-shaped block on the bracket (51), the knocking spring (54) rebounds and drives the knocking block (55) and the limit rod (56) to move to the left, and the knocking block (55) knocks the sampling tube (1); The invention also includes a limiting mechanism (7) for limiting the rotating shaft (42), the limiting mechanism (7) including a compression spring (71), a positioning rod (72) and a fixed rod (73), the left and right sides of the lower part of the sampling tube (1) are connected to the fixed rod (73), the lower part of the fixed rod (73) is slidably connected to the positioning rod (72), the positioning rod (72) is inserted into the lower part of the rotating shaft (42), and a compression spring (71) is connected between the positioning rod (72) and the inner side of the lower part of the fixed rod (73), and the compression spring (71) is wound around the positioning rod (72).

2. A pharmaceutical testing sampling device according to claim 1, characterized in that: The invention also includes a dispersing mechanism (6) for dispersing powdered medicines. The dispersing mechanism (6) includes a rotating rod (61), a small gear (62), a large gear (63) and a dispersing rod (64). The outer wall of the middle part of the sampling tube (1) is rotatably connected to the large gear (63). The left and right sides of the bottom of the large gear (63) are connected to the dispersing rod (64). The upper right part of the sampling tube (1) is rotatably connected to the rotating rod (61). The lower side of the rotating rod (61) is connected to the small gear (62). The small gear (62) is meshed with the large gear (63). The rotating rod (61) drives the small gear (62) to rotate. The small gear (62) rotates to drive the large gear (63) to drive the dispersing rod (64) to rotate. The dispersing rod (64) rotates to disperse the powder.

3. A sampling device for pharmaceutical testing according to claim 1, characterized in that: Also included is a handle, and both upper and lower sides of the left portion of the electric push rod (21) are connected with the handle.

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