Biological reagent sampling machine

Abstract

The utility model discloses a biological reagent sampling machine, and relates to the field of reagent sampling, the biological reagent sampling machine comprises a bottom plate and a sampling suction pipe, the bottom plate is provided with an adjusting assembly used for controlling the position of the sampling suction pipe, the sampling suction pipe is provided with a quantity control assembly used for controlling the suction quantity of the sampling suction pipe, and the quantity control assembly comprises a U-shaped frame fixedly connected to one side of the top end of the sampling suction pipe; through cooperative arrangement of the limiting plate, the dial gauge, the positioning plate and other structures, during use, the lower surface of the limiting plate is moved to the dial gauge needing a sampling amount, then the pull rod is pulled, the piston plate moves upwards to suck a sampling reagent into the sampling suction pipe, meanwhile, the positioning plate ascends, and when the positioning plate makes contact with the limiting plate, the piston plate cannot continue to move, so that the sampling reagent is sucked into the sampling suction pipe. And the problems that the lifting height of the rubber ring is difficult to accurately control, the sampling reagent is easy to extract too much or too little, the height of the rubber ring needs to be repeatedly controlled for adjustment, and the working efficiency is reduced are solved as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of reagent sampling, in particular to a biological reagent sampling machine. BACKGROUND

[0002] In a fully automatic biochemical analyzer, the sampling device is a very important part. The sampling device needs to transfer the liquid sample from the sample bottle to the reagent bottle, after sufficient reaction, and then transfer the mixed liquid to the counter for detection. The biochemical analyzer includes a cantilever mechanism and a driving mechanism. The cantilever mechanism is connected to the driving mechanism. The cantilever mechanism includes a sampling stirring arm, a stirring paddle, and a sampling needle. One end of the sampling stirring arm is connected to the driving mechanism, and the other end is a free end. The motor is fixed to the sampling stirring arm through a motor support. A certain amount of reagent is delivered by a proportional pump, i.e. a piston type infusion pump, according to the requirements.

[0003] The utility model patent with publication number CN214749104U proposes a biological reagent sampling machine, which includes a main body. The upper surface of the main body is provided with a rotating shaft. The outer surface of the rotating shaft is movably connected with a moving block. The outer surface of the moving block is fixedly connected with a connecting pipe on one side. The connecting pipe is movably sleeved with an extension pipe inside. The upper surface of the extension pipe is provided with a groove. The upper surface of the groove is movably connected with a protruding block.

[0004] The biological reagent sampling machine in the above-mentioned technical scheme can pull the second pulling block to drive the rubber ring to move upward through the pulling rod. When the rubber ring moves upward, the negative pressure generated by the rubber ring can suck the sampling reagent from the sampling test tube through the hole needle into the sampling suction tube. The surface of the sampling suction tube is provided with scales, which can enable the experimental personnel to observe the specific amount of the sampling reagent and can randomly select the amount of the sampling reagent. However, during the extraction process, it is difficult for the experimental personnel to accurately control the rising height of the rubber ring when pulling the rubber ring to move upward. The sampling reagent is easy to be extracted too much or too little. It is necessary to repeatedly control and adjust the height of the rubber ring, which leads to the problem of reducing the work efficiency. TECHNICAL CONTENT

[0005] In order to solve the above-mentioned problems, the present application provides a biological reagent sampling machine.

[0006] The biological reagent sampling machine provided by the present application adopts the following technical scheme:

[0007] The utility model provides a biological reagent sampling machine, including bottom plate and sampling pipet, be equipped with the adjusting assembly for controlling the position of sampling pipet on bottom plate, be equipped with the control component for controlling the suction volume of sampling pipet on sampling pipet, the control component includes the U type frame of fixed connection in one side of sampling pipet top end, the side wall of one side of U type frame is located in the just above of sampling pipet and is equipped with the limit stop, be equipped with the lifting assembly for controlling the movement of limit stop on U type frame, the side wall of one side of U type frame is engraved with the scale table of adapting with the capacity of sampling pipet, the inside bottom of sampling pipet is equipped with the piston plate, the upper surface of piston plate is fixedly connected with pull rod, the one end of pull rod away from piston plate penetrates limit stop and U type frame, the inside top of sampling pipet is equipped with the locating plate, and the locating plate is sleeved on pull rod and forms fixed connection.

[0008] By adopting the above technical scheme, when using, the user moves the lower surface of the limit stop to the scale table of the required sampling amount by the required sampling reagent amount, then pulls the pull rod to move the piston plate upward, and the negative pressure generated when the piston plate moves upward sucks the sampling reagent into the sampling pipet, and the locating plate rises along with the piston plate, and when the locating plate contacts the limit stop, the piston plate cannot continue to move, the sampling reagent is stopped from being sucked, and the problem that the sampling reagent is easily sucked too much or too little and needs to be repeatedly controlled to adjust the height of the rubber ring is avoided.

[0009] Preferably, the lifting assembly includes a first sliding groove opened in the side wall of the U-shaped frame, a first threaded rod is arranged in the first sliding groove, the bottom end of the first threaded rod is rotationally connected with the bottom wall of the first sliding groove, the top end of the first threaded rod penetrates the first sliding groove and is fixedly connected with a rotating disc, and one end of the limit stop is slidably arranged in the first sliding groove and is threadedly connected with the first threaded rod.

[0010] By adopting the above technical scheme, the limit stop can be moved up and down in the first sliding groove by rotating the rotating disc to rotate the first threaded rod in cooperation with the first sliding groove, and the height of the limit stop is adjusted.

[0011] Preferably, the adjusting assembly includes a rotating seat rotationally connected to the upper surface of the bottom plate, a supporting column is fixedly connected to the upper surface of the rotating seat, a second sliding groove is opened in the side wall of one side of the supporting column, a second threaded rod is rotationally connected in the second sliding groove, a telescopic plate is threadedly connected to the second threaded rod, the end of the telescopic plate away from the second threaded rod is fixedly connected with the sampling pipet, and a forward and reverse motor for rotating the second threaded rod is installed at the top end of the supporting column.

[0012] By adopting the technical scheme, the supporting column is rotated through the rotating base, the telescopic plate is lifted through the starting of the forward-reverse motor, and the distance between the sampling pipette and the supporting column is adjusted through the telescopic plate, so that the position of the sampling pipette is adjusted, and the sampling pipette is conveniently contacted with the sampling reagent.

[0013] Preferably, one side wall of the sampling pipette is fixedly connected with a protective sleeve for sleeving a hole needle at a sampling pipette suction end.

[0014] By adopting the technical scheme, the hole needle at the sampling pipette suction end is sleeved with the protective sleeve, and the hole needle is prevented from hurting the user.

[0015] Preferably, a third sliding groove is formed in the upper surface of the bottom plate, a bidirectional screw rod is rotationally connected in the third sliding groove, and two clamping plates for preventing the sampling pipette from moving are threadedly connected to the bidirectional screw rod.

[0016] By adopting the technical scheme, the two clamping plates are moved relative to each other through the rotation of the bidirectional screw rod and the cooperation of the third sliding groove, the sampling pipette is clamped, and the sampling pipette is prevented from shaking during movement.

[0017] Preferably, the opposite side walls of the two clamping plates are fixedly connected with elastic rubber pads.

[0018] By adopting the technical scheme, the elastic rubber pads can prevent the sampling pipette from being damaged when the clamping plates clamp the sampling pipette.

[0019] Preferably, the end, away from the piston plate, of the pull rod is fixedly connected with a pull block.

[0020] By adopting the technical scheme, the pull block facilitates pulling of the pull rod.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. The present application is provided through the cooperation of the limiting plate, the scale table and the positioning plate, when in use, the user moves the limiting plate up and down through the sampling reagent amount to be drawn, moves the lower surface of the limiting plate to the scale table of the sampling amount required, then pulls the pull rod, moves the piston plate upward, the negative pressure generated by the piston plate sucks the sampling reagent into the sampling pipette, and the positioning plate rises with the piston plate, and when the positioning plate contacts the limiting plate, the piston plate cannot continue to move, the sampling reagent is stopped from being sucked, and the problem that the sampling reagent is easily sucked too much or too little, the height of the rubber ring needs to be repeatedly controlled and adjusted, and the work efficiency is reduced is avoided.

[0023] 2. The support column is rotated by rotating the rotating seat, the telescopic plate is raised or lowered by starting the forward and reverse motor, and the distance between the sampling suction tube and the support column is adjusted by the telescopic plate, so that the position of the sampling suction tube is adjusted, and the sampling suction tube is conveniently contacted with the sampling reagent. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole structure schematic diagram of a biological reagent sampling machine in the embodiment of the application;

[0025] Figure 2 It is a schematic diagram of the internal structure of a sampling suction tube in the embodiment of the application;

[0026] Figure 3 It is a schematic diagram of the internal structure of a sampling suction tube in the embodiment of the application; Figure 1 It is a schematic diagram of the internal structure of a sampling suction tube in the embodiment of the application;

[0027] Figure 4 It is a schematic diagram of the internal structure of a sampling suction tube in the embodiment of the application; Figure 1 It is a schematic diagram of the internal structure of a sampling suction tube in the embodiment of the application.

[0028] The drawings show that: 1, the bottom plate; 2, the sampling suction tube; 3, the U-shaped frame; 4, the limiting plate; 5, the scale table; 6, the piston plate; 7, the pull rod; 8, the positioning plate; 9, the first sliding groove; 10, the first threaded rod; 11, the rotating disc; 12, the rotating seat; 13, the support column; 14, the second sliding groove; 15, the second threaded rod; 16, the telescopic plate; 17, the forward and reverse motor; 18, the protective sleeve; 19, the third sliding groove; 20, the bidirectional screw rod; 21, the clamping plate; 22, the elastic rubber pad; 23, the pull block. DETAILED DESCRIPTION

[0029] The drawings will be described below Figures 1-4 The application will be further described in detail.

[0030] The embodiment of the application discloses a biological reagent sampling machine.

[0031] Referring to Figure 1 , Figure 2 and Figure 3 , a biological reagent sampling machine comprises a bottom plate 1 and a sampling suction tube 2, a hole needle is installed at the extraction end of the sampling suction tube 2, the bottom plate 1 is provided with an adjusting assembly for controlling the position of the sampling suction tube 2, the sampling suction tube 2 is provided with a quantity control assembly for controlling the suction amount of the sampling suction tube 2, the quantity control assembly comprises a U-shaped frame 3, a limiting plate 4, a scale table 5, a piston plate 6, a pull rod 7 and a positioning plate 8.

[0032] The U-shaped frame 3 is fixedly connected to one side of the top end of the sampling suction pipe 2, the limiting plate 4 is arranged on one side of the side wall of the U-shaped frame 3 and located directly above the sampling suction pipe 2, the U-shaped frame 3 is provided with a lifting assembly for controlling the movement of the limiting plate 4, the scale table 5 is engraved on one side of the side wall of the U-shaped frame 3 close to the limiting plate 4, the scale table 5 is matched with the capacity of the sampling suction pipe 2, the piston plate 6 is arranged at the bottom end inside the sampling suction pipe 2, the pull rod 7 is fixedly connected to the upper surface of the piston plate 6 for driving the piston plate 6 to lift, so that the sampling suction pipe 2 can suck the sampling reagent, one end of the pull rod 7 away from the piston plate 6 penetrates through the limiting plate 4 and the U-shaped frame 3, and the positioning plate 8 is arranged at the top end inside the sampling suction pipe 2 and is sleeved on the pull rod 7 to be fixedly connected, so that the positioning plate 8 cannot move after being in contact with the limiting plate 4, the height of the piston plate 6 lifting is accurately controlled, and the suction amount of the sampling suction pipe 2 is controlled.

[0033] With reference to Figure 1 , Figure 3 and Figure 4 , the lifting assembly comprises a first sliding groove 9 formed in one side of the side wall of the U-shaped frame 3, a first threaded rod 10 arranged in the first sliding groove 9, a rotating disc 11 fixedly connected to the top end of the first threaded rod 10 and penetrating through the first sliding groove 9, and one end of the limiting plate 4 slidably arranged in the first sliding groove 9 and threadedly connected with the first threaded rod 10, so that the limiting plate 4 can move up and down in the first sliding groove 9 by rotating the rotating disc 11 and the first sliding groove 9, and the height of the limiting plate 4 is adjusted.

[0034] With reference to Figure 1 , the adjusting assembly comprises a rotating seat 12 rotatably connected to the upper surface of the bottom plate 1, a supporting column 13 fixedly connected to the upper surface of the rotating seat 12, a second sliding groove 14 formed in one side of the side wall of the supporting column 13, a second threaded rod 15 rotatably arranged in the second sliding groove 14, an expansion plate 16 threadedly connected to the second threaded rod 15, and the sampling suction pipe 2 fixedly connected to one end of the expansion plate 16 away from the second threaded rod 15, so that the supporting column 13 can be rotated by the rotating seat 12, the expansion plate 16 can be lifted by starting the positive and negative motor 17, the distance between the sampling suction pipe 2 and the supporting column 13 can be adjusted by the expansion plate 16, the position of the sampling suction pipe 2 is conveniently adjusted, and the sampling suction pipe 2 is conveniently contacted with the sampling reagent.

[0035] With reference to Figure 1 , the sampling suction pipe 2 is fixedly connected with a protective sleeve 18 for sleeving the suction end needle of the sampling suction pipe 2, so that the protective sleeve 18 can be sleeved on the suction end needle of the sampling suction pipe 2 to prevent the needle from hurting the user.

[0036] With reference to Figure 1The bottom plate 1 is provided with a third sliding groove 19 on the upper surface, and a bidirectional screw rod 20 is rotatably connected in the third sliding groove 19. One end of the bidirectional screw rod 20 penetrates through the third sliding groove 19 and is fixedly connected with a rotating disc. Two clamping plates 21 for preventing the sampling pipette 2 from moving are threadedly connected on the bidirectional screw rod 20. By rotating the bidirectional screw rod 20, the two clamping plates 21 are moved relative to each other in cooperation with the third sliding groove 19, so that the sampling pipette 2 can be clamped to prevent shaking of the sampling pipette 2 during movement.

[0037] With reference to Figure 1 The opposite side walls of the two clamping plates 21 are fixedly connected with elastic rubber pads 22, which can prevent the clamping plates 21 from damaging the sampling pipette 2 when clamping the sampling pipette 2.

[0038] With reference to Figure 4 The end of the pull rod 7 away from the piston plate 6 is fixedly connected with a pull block 23, which facilitates pulling of the pull rod 7.

[0039] The implementation principle of the biological reagent sampling machine is as follows: in use, a user adjusts the height of the limiting plate 4 by rotating the rotating disc 11 to rotate the first threaded rod 10 and move the limiting plate 4 up and down in the first sliding groove 9 according to the amount of sampling reagent to be extracted, and then moves the lower surface of the limiting plate 4 to the scale table 5 at the required sampling amount. Then, the user pulls the pull rod 7 to move the piston plate 6 upward, and the negative pressure generated thereby sucks the sampling reagent into the sampling pipette 2. At the same time, the positioning plate 8 rises and contacts the limiting plate 4, so that the piston plate 6 cannot continue to move and the sampling reagent is stopped from being sucked, thereby preventing too much or too little sampling reagent from being sucked, and avoiding the problems of difficult precise control of the rising height of the rubber ring, easy extraction of too much or too little sampling reagent, and repeated control of the height of the rubber ring for adjustment, which reduces the work efficiency.

[0040] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A biological reagent sampling machine, comprising a base plate (1) and a sampling pipette (2), wherein the base plate (1) is provided with an adjustment component for controlling the position of the sampling pipette (2), and the sampling pipette (2) is provided with a volume control component for controlling the amount of sample drawn by the sampling pipette (2), characterized in that: The control assembly includes a U-shaped frame (3) fixedly connected to one side of the top end of the sampling pipette (2), a limiting plate (4) is arranged on the side wall of one side of the U-shaped frame (3) above the sampling pipette (2), a lifting assembly for controlling the movement of the limiting plate (4) is arranged on the U-shaped frame (3), a scale table (5) matching the capacity of the sampling pipette (2) is engraved on the side wall of the side of the U-shaped frame (3) close to the limiting plate (4), a piston plate (6) is arranged at the bottom end inside the sampling pipette (2), a pull rod (7) is fixedly connected to the upper surface of the piston plate (6), one end of the pull rod (7) away from the piston plate (6) penetrates the limiting plate (4) and the U-shaped frame (3), and a positioning plate (8) is arranged at the top end inside the sampling pipette (2), the positioning plate (8) is sleeved on the pull rod (7) and is fixedly connected.

2. The biological agent sampling machine of claim 1, wherein: The lifting assembly includes a first sliding groove (9) opened in the side wall of one side of the U-shaped frame (3), a first threaded rod (10) is arranged in the first sliding groove (9), the bottom end of the first threaded rod (10) is rotatably connected to the bottom wall of the first sliding groove (9), one end of the first threaded rod (10) penetrates the first sliding groove (9) and is fixedly connected with a rotating disc (11), and one end of the limiting plate (4) is slidably arranged in the first sliding groove (9) and is threadedly connected with the first threaded rod (10).

3. The biological agent sampling machine of claim 2, wherein: The adjusting assembly includes a rotating seat (12) rotatably connected to the upper surface of the bottom plate (1), a supporting column (13) is fixedly connected to the upper surface of the rotating seat (12), a second sliding groove (14) is opened in the side wall of one side of the supporting column (13), and a second threaded rod (15) is rotatably connected in the second sliding groove (14).

4. The biological agent sampling machine of claim 3, wherein: A telescopic plate (16) is threadedly connected to the second threaded rod (15), one end of the telescopic plate (16) away from the second threaded rod (15) is fixedly connected with the sampling pipette (2), and a forward and reverse motor (17) for driving the second threaded rod (15) to rotate is installed at the top end of the supporting column (13).

5. The biological agent sampling machine of claim 4, wherein: A protective sleeve (18) for sleeving a hole needle of the sampling pipette (2) is fixedly connected to the side wall of one side of the sampling pipette (2).

6. The biological agent sampling machine of claim 5, wherein: A third sliding groove (19) is opened in the upper surface of the bottom plate (1), a bidirectional screw rod (20) is rotatably connected in the third sliding groove (19), and two clamping plates (21) for preventing the sampling pipette (2) from moving are threadedly connected to the bidirectional screw rod (20).

7. The biological agent sampling machine of claim 6, wherein: Resilient rubber pads (22) are fixedly connected to the side walls of opposite sides of the two clamping plates (21).

8. The biological agent sampling machine of claim 7, wherein: A pull block (23) is fixedly connected to one end of the pull rod (7) away from the piston plate (6).

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