Simple and adjustable quantitative sample adding device for inspection

Abstract

The invention provides a simple and adjustable quantitative sample adding device for inspection, and relates to the technical field of medical inspection.The simple and adjustable quantitative sample adding device for inspection comprises a sampling part used for extracting liquid, placing a liquid storage tank under a sampling barrel, adjusting a switching part to be in a separated state, driving the sampling part to move downwards by a driving part, the sampling part is inserted into liquid in the liquid storage tank, the insertion depth is controlled according to the amount needing to be extracted, then the liquid in the liquid storage tank can be extracted into the sampling part, the switching part is adjusted to be in the connection state, the driving part can drive the sampling part to rotate, the sampling part rotates to the position over the experiment measuring cup, and then the liquid in the liquid storage tank can be extracted into the sampling part. The adjusting part is used for adjusting the position of the experimental measuring cup, so that the sampling part is inserted into the experimental measuring cup, liquid in the sampling part can be released into the experimental measuring cup, quantitative sampling can be conveniently completed, the sampling efficiency can be effectively reduced, bubbles can be effectively prevented from being generated, and the sampling accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical testing, and particularly to a simple adjustable quantitative sampling device for testing. Background Art

[0002] A liquid dispenser, also called a pipette, is a tool for quantitatively transferring liquids. Within a certain range of measuring ranges, it can transfer liquids from the original container to another container. Pipettes are widely used in laboratories in the fields of biology, chemistry, clinical diagnosis, pharmacy, environmental science, food science, etc.

[0003] In most of the existing pipette devices, the amount of liquid drawn is controlled by a range rod. Therefore, when the sampling amount changes frequently, it is necessary to continuously adjust the length of the range rod and then draw the liquid, which is extremely time-consuming and laborious. Moreover, when the drawing method is incorrect, for example, when the mouth of the sampling tube is not completely submerged in the liquid, it is very easy to cause air to enter the sampling tube, resulting in a deviation in the sampling amount, which will further affect the experimental results. Summary of the Invention

[0004] The purpose of the present invention is to provide a simple adjustable quantitative sampling device for testing, aiming to solve the problems in the existing pipette devices that mostly require continuously adjusting the length of the range rod and then drawing the liquid, which is extremely time-consuming and laborious, and when the drawing method is incorrect, it is very easy to cause air to enter the sampling tube, resulting in a deviation in the sampling amount, which will further affect the experimental results.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: The simple adjustable quantitative sampling device for testing includes an experimental measuring cup (1), a sampling part: used for drawing liquid. When the sampling part moves up and down, the sampling part can be inserted into a liquid storage tank for storing liquid to draw the liquid in the liquid storage tank, and the sampling part can rotate. The sampling part can rotate above the experimental measuring cup, and the liquid drawn in the sampling part can be injected into the experimental measuring cup. A driving part: used for installing and fixing the sampling part, and the driving part can drive the sampling part to move up and down and rotate, so as to adjust the position of the sampling part; A switching part: arranged on the driving part, the switching part has two states of separation and connection. When the switching part is in the separation state, the driving part can drive the sampling part to move up and down. When the switching part is in the connection state, the driving part can drive the sampling part to rotate; An adjusting part: arranged on the driving part, used for fixing the experimental measuring cup and capable of driving the experimental measuring cup to move up and down to adjust the distance between the experimental measuring cup and the sampling part.

[0006] A further technical solution of the present invention is that the sampling part includes a sampling cylinder. Scale lines are engraved on the surface of the sampling cylinder. A threaded block is fixedly connected inside the sampling cylinder. A lead screw is threadedly connected inside the threaded block. The top end of the lead screw is fixedly connected with a sealing plug adapted to the sampling cylinder. The bottom end of the lead screw is fixedly connected with a limiting plate. A turning handle is fixedly connected to the sealing plug.

[0007] A further technical solution of the present invention is that the driving part includes a fixed seat. Two slide rails are fixedly connected to the fixed seat. And the experimental measuring cup is located between the two slide rails. A first slider is slidably connected inside each of the two slide rails. Connecting frames are rotatably connected to one side surface of the two first sliders close to each other. And the end of the connecting frame far from the first slider is rotatably connected to a fixed block. And the sampling cylinder is slidably connected inside the fixed block. Limiting blocks are fixedly connected to one side surface of the two first sliders close to each other. And the limiting blocks are in contact with the connecting frames for limiting the connecting frames. A threaded rod is rotatably connected to the fixed seat. A nut is threadedly connected to the surface of the threaded rod. And the nut is fixedly connected to the first slider.

[0008] A further technical solution of the present invention is that the switching part includes a non-circular rod rotatably connected inside one of the first sliders. And the end of the non-circular rod close to the connecting frame is fixedly connected to the connecting frame. A gear is slidably connected to the surface of the non-circular rod. A rack is fixedly connected to the fixed seat. And the rack and the gear have a coincident position.

[0009] A further technical solution of the present invention is that the adjusting part includes a base arranged below the fixed seat. A support rod is fixedly connected to the base. And the top end of the support rod extends above the fixed seat and is connected to the bottom surface of the experimental measuring cup. Connecting plates are fixedly connected to the left and right ends of the fixed seat. A lead screw is threadedly connected inside the connecting plate. And the bottom end of the lead screw is rotatably connected to the base. A second slider is slidably connected inside each of the two slide rails. A fixed ring is fixedly connected between the two second sliders. And the experimental measuring cup is fixed inside the fixed ring.

[0010] A further technical solution of the present invention is that a cleaning part is arranged on the connecting frame for wiping the surface of the sampling cylinder.

[0011] A further technical solution of the present invention is that the cleaning part includes a chute opened inside the connecting frame. A third slider is slidably connected inside the chute. An annular brush adapted to the sampling cylinder is fixedly connected between the two third sliders. Limiting rods are fixedly connected to one side surface of the two third sliders away from each other.

[0012] The beneficial effects of the present invention are: The liquid storage tank is placed directly below the sampling tube, the switching part is adjusted to the separation state, the sampling part is driven downward by the driving part, and the sampling part is inserted into the liquid in the liquid storage tank, and the insertion depth is controlled according to the amount to be extracted, so that the liquid in the liquid storage tank can be extracted into the sampling part, and the switching part is adjusted to the connection state, and the driving part can drive the sampling part to rotate, so that the sampling part rotates to directly above the experimental measuring cup, and the position of the experimental measuring cup is adjusted by the adjusting part, so that the sampling part is inserted into the experimental measuring cup, and the liquid in the sampling part can be released into the experimental measuring cup, so that quantitative sampling can be conveniently completed. Sampling in this way can not only effectively save sampling efficiency, but also effectively avoid the generation of bubbles, thereby improving the accuracy of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of a specific embodiment of the present invention.

[0014] Figure 2 It is a rear view of a specific embodiment of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure of the sampling part in a specific embodiment of the present invention.

[0016] In the figure: 1. experimental measuring cup; 21. sampling tube; 22. threaded block; 23. screw; 24. sealing plug; 25. limit plate; 26. twist; 31. slide rail; 32. first slider; 33. connecting frame; 34. fixed block; 35. limit block; 36. nut; 37. threaded rod; 38. fixed seat; 41. gear; 42. rack; 43. non-circular rod; 44. pull plate; 51. base; 52. support rod; 53. connecting plate; 54. screw; 55. second slider; 61. slide groove; 62. third slider; 63. annular brush; 64. limit rod. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0018] like Figures 1 - 3As shown in the figure, a simple adjustable quantitative sampling device for inspection includes an experimental measuring cup 1, a sampling part, and a driving part. The sampling part can move up and down. Place the liquid storage tank directly below the sampling part. When the sampling part moves up and down, the sampling part can be inserted into the liquid storage tank for storing liquid, and the liquid in the liquid storage tank can be extracted. Moreover, the sampling part can rotate. The sampling part can rotate above the experimental measuring cup 1, so that the liquid extracted in the sampling part can be injected into the experimental measuring cup 1, thus completing the sampling. The driving part is used for installing and fixing the sampling part, and the driving part can drive the sampling part to lift and rotate, so that the position of the sampling part can be conveniently adjusted. A switching part is provided on the driving part. The switching part has two states: separation and connection. When the switching part is in the separated state, the driving part can drive the sampling part to lift. When the switching part is in the connected state, the driving part can drive the sampling part to rotate, so that the driving part can drive the sampling part to move more conveniently. An adjusting part is provided on the driving part, which is used for fixing the experimental measuring cup 1 and can drive the experimental measuring cup 1 to lift, so as to adjust the distance between the experimental measuring cup 1 and the sampling part, preventing liquid leakage between the experimental measuring cup 1 and the sampling part when the sampling part injects liquid into the experimental measuring cup 1.

[0019] As Figure 3 shown, the sampling part includes a sampling cylinder 21. Scale lines are engraved on the surface of the sampling cylinder 21. A threaded block 22 is fixedly connected inside the sampling cylinder 21. A lead screw 23 is threadedly connected inside the threaded block 22. The top end of the lead screw 23 is fixedly connected with a sealing plug 24 adapted to the sampling cylinder 21. The bottom end of the lead screw 23 is fixedly connected with a limiting plate 25. A turning handle 26 is fixedly connected to the sealing plug 24. First, insert the sampling cylinder 21 into the liquid storage tank. By inserting the sampling cylinder 21 into the liquid, and by controlling the inserted length of the sampling cylinder 21. For example, when 10 ml of liquid needs to be extracted, control the bottom end of the sampling cylinder 21 to insert 10 ml below the water level. Then rotate the lead screw 23 to make the sealing plug 24 move downward to seal the top end of the sampling cylinder 21. Finally, take out the sampling cylinder 21 from the liquid storage tank, and the quantitative extraction of the liquid can be realized. Moreover, by this extraction method, the generation of air bubbles can be effectively prevented, making the extracted amount more accurate.

[0020] As Figure 1 and Figure 2As shown in the figure, the driving part includes a fixed seat 38. Two slide rails 31 are fixedly connected to the fixed seat 38. The experimental measuring cup 1 is located between the two slide rails 31. A first slider 32 is slidably connected to each of the two slide rails 31. A connecting frame 33 is rotatably connected to one side surface of each of the two first sliders 32 close to each other. One end of the connecting frame 33 away from the first slider 32 is rotatably connected to a fixed block 34. The sampling cylinder 21 is slidably connected to the fixed block 34. A limiting block 35 is fixedly connected to one side surface of each of the two first sliders 32 close to each other. The limiting block 35 is in contact with the connecting frame 33 for limiting the connecting frame 33. A threaded rod 37 is rotatably connected to the fixed seat 38. A nut 36 is threadedly connected to the surface of the threaded rod 37. The nut 36 is fixedly connected to the first slider 32. Connect the threaded rod 37 to an external driving source. When the threaded rod 37 rotates, it can drive the nut 36 to move up and down. Then, when the nut 36 moves up and down, it can drive the first slider 32 to move up and down. When the switching part is in the separated state, when the first slider 32 moves up and down, it can drive the connecting frame 33 to move up and down. Then, when the connecting frame 33 moves up and down, it can drive the sampling cylinder 21 to move up and down, so that the sampling cylinder 21 can be conveniently inserted into the liquid storage tank. When the switching part is in the connected state, when the first slider 32 moves up and down, it can drive the connecting frame 33 to rotate. When the connecting frame 33 rotates, it can drive the sampling cylinder 21 to rotate clockwise by 90 degrees, so that the sampling cylinder 21 rotates to directly above the experimental measuring cup 1. Then, move the sealing plug 24 upward. The sealing plug 24 can no longer seal the top of the sampling cylinder 21. Then, the liquid in the sampling cylinder 21 can be injected into the experimental measuring cup 1, so that the liquid in the liquid storage tank can be quantitatively sampled and filled into the experimental measuring cup 1.

[0021] As Figure 1 shown in the figure, the switching part includes a non-circular rod 43 rotatably connected to one of the first sliders 32. One end of the non-circular rod 43 close to the connecting frame 33 is fixedly connected to the connecting frame 33. A gear 41 is slidably connected to the surface of the non-circular rod 43. A rack 42 is fixedly connected to the fixed seat 38. The rack 42 and the gear 41 have an overlapping position. The gear 41 can move along the length direction of the non-circular rod 43. A pull plate 44 is sleeved on the surface of the non-circular rod 43. The pull plate 44 is rotatably connected to the gear 41. When the gear 41 moves to mesh with the rack 42, it is in the connected state. Thus, when the first slider 32 moves up and down, through the cooperation of the gear 41 and the rack 42, the connecting frame 33 can be driven to rotate. When the gear 41 moves to be separated from the rack 42, it is in the separated state. Thus, when the first slider 32 moves up and down, the rack 42 cannot limit the gear 41. Thus, the connecting frame 33 can move up and down, and then the sampling cylinder 21 can be conveniently driven to move along different paths to adjust the position of the sampling cylinder 21.

[0022] As Figure 1As shown in the figure, the adjusting part includes a base 51 arranged below the fixed seat 38. A support rod 52 is fixedly connected to the base 51, and the top end of the support rod 52 extends above the fixed seat 38 and is connected to the bottom surface of the experimental measuring cup 1. Connecting plates 53 are fixedly connected to both the left and right ends of the fixed seat 38. A lead screw 54 is threadedly connected to the connecting plate 53, and the bottom end of the lead screw 54 is rotatably connected to the base 51. Second sliders 55 are slidably connected to both of the slide rails 31. A fixing ring is fixedly connected between the two second sliders 55, and the experimental measuring cup 1 is fixed within the fixing ring. When the sampling cylinder 21 rotates to directly above the experimental measuring cup 1, rotate the lead screw 54 to move the fixed seat 38 downward. Then, when the fixed seat 38 moves downward, it can drive the sampling cylinder 21 to move, so that the bottom end of the experimental measuring cup 1 can be inserted into the experimental measuring cup 1, and thus the liquid in the experimental measuring cup 1 can be filled into the experimental measuring cup 1, preventing liquid leakage during filling.

[0023] As Figure 1 and Figure 2 As shown in the figure, a cleaning part is arranged on the connecting frame 33 for wiping the surface of the sampling cylinder 21 to prevent dust from adhering to the surface of the sampling cylinder 21 and contaminating the liquid. The cleaning part includes a chute 61 opened in the connecting frame 33. A third slider 62 is slidably connected to the chute 61. An annular brush 63 adapted to the sampling cylinder 21 is fixedly connected between the two third sliders 62. Limiting rods 64 are fixedly connected to the mutually remote side surfaces of the two third sliders 62. When the connecting frame 33 drives the sampling cylinder 21 to rotate to directly above the experimental measuring cup 1, the sampling cylinder 21 will simultaneously be directly above the annular brush 63. At this time, the limiting rod 64 will contact the top end of the slide rail 31. Then, lower the connecting frame 33. When the connecting frame 33 descends, it can drive the sampling cylinder 21 to descend, while the annular brush 63 will not move under the limitation of the limiting rod 64. At this time, when the sampling cylinder 21 descends, it can be inserted into the annular brush 63 and move along the annular brush 63. At this time, the annular brush 63 can wipe the surface of the sampling cylinder 21 to prevent contamination of the liquid.

[0024] Working principle: First, place the liquid storage tank directly below the sampling cylinder 21, then adjust the switching part to the separated state. Next, drive the sampling part to move downward through the driving part, so that the sampling part is inserted into the liquid in the liquid storage tank, and control the insertion depth according to the required amount to be extracted, then the liquid in the liquid storage tank can be extracted into the sampling part. Then, adjust the switching part to the connected state, and the driving part can drive the sampling part to rotate, so that the sampling part rotates to directly above the experimental measuring cup 1. Next, adjust the position of the experimental measuring cup 1 through the adjusting part, so that the sampling part is inserted into the experimental measuring cup 1, and the liquid in the sampling part can be released into the experimental measuring cup 1, thus enabling convenient quantitative sampling. By sampling in this way, not only can the sampling efficiency be effectively saved, but also the generation of bubbles can be effectively avoided, improving the sampling accuracy.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in all respects, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0026] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A simple adjustable quantitative sample adding device for inspection, including an experimental measuring cup (1), characterized in that: Sampling part: used for extracting liquid. When the sampling part moves up and down, the sampling part can be inserted into the liquid storage tank for storing liquid to extract the liquid in the liquid storage tank, and the sampling part can rotate. The sampling part can rotate above the experimental measuring cup (1), and the liquid extracted in the sampling part can be injected into the experimental measuring cup (1). Driving part: used for installing and fixing the sampling part, and the driving part can drive the sampling part to lift and rotate, so as to adjust the position of the sampling part. Switching part: arranged on the driving part. The switching part has two states: separation and connection. When the switching part is in the separation state, the driving part can drive the sampling part to lift. When the switching part is in the connection state, the driving part can drive the sampling part to rotate. Adjusting part: arranged on the driving part, used for fixing the experimental measuring cup (1), and can drive the experimental measuring cup (1) to lift to adjust the distance between the experimental measuring cup (1) and the sampling part.

2. The simple adjustable quantitative sampling device for inspection according to claim 1, characterized in that, The sampling part includes a sampling cylinder (21). Scale lines are engraved on the surface of the sampling cylinder (21). A threaded block (22) is fixedly connected inside the sampling cylinder (21). A lead screw (23) is threadedly connected inside the threaded block (22). The top end of the lead screw (23) is fixedly connected with a sealing plug (24) adapted to the sampling cylinder (21). The bottom end of the lead screw (23) is fixedly connected with a limiting plate (25). A turning handle (26) is fixedly connected to the sealing plug (24).

3. The simple adjustable quantitative sample adding device for inspection according to claim 2, wherein, The driving part includes a fixed seat (38). Two slide rails (31) are fixedly connected to the fixed seat (38). The experimental measuring cup (1) is located between the two slide rails (31). A first slider (32) is slidably connected inside each of the two slide rails (31). Connecting frames (33) are rotatably connected to one side surfaces of the two first sliders (32) close to each other. One end of the connecting frame (33) away from the first slider (32) is rotatably connected to a fixed block (34). The sampling cylinder (21) is slidably connected inside the fixed block (34). Limiting blocks (35) are fixedly connected to one side surfaces of the two first sliders (32) close to each other. The limiting blocks (35) are in contact with the connecting frames (33) and are used for limiting the connecting frames (33). A threaded rod (37) is rotatably connected to the fixed seat (38). A nut (36) is threadedly connected to the surface of the threaded rod (37). The nut (36) is fixedly connected to the first slider (32).

4. The simple adjustable quantitative sampling device for inspection according to claim 3, characterized in that, The switching part includes a non-circular rod (43) rotatably connected inside one of the first sliders (32). One end of the non-circular rod (43) close to the connecting frame (33) is fixedly connected to the connecting frame (33). A gear (41) is slidably connected to the surface of the non-circular rod (43). A rack (42) is fixedly connected to the fixed seat (38). The rack (42) and the gear (41) have a coincident position.

5. The simple adjustable quantitative sample adding device for inspection according to claim 3, characterized in that, The adjusting part includes a base (51) arranged below the fixed seat (38). A support rod (52) is fixedly connected to the base (51), and the top end of the support rod (52) extends above the fixed seat (38) and is connected to the bottom surface of the experimental measuring cup (1). Connecting plates (53) are fixedly connected to both the left and right ends of the fixed seat (38). A lead screw (54) is threadedly connected inside the connecting plate (53), and the bottom end of the lead screw (54) is rotatably connected to the base (51). Second sliders (55) are slidably connected inside both of the two slide rails (31). A fixing ring is fixedly connected between the two second sliders (55), and the experimental measuring cup (1) is fixed inside the fixing ring.

6. The simple adjustable quantitative sampling device for inspection according to claim 3, characterized in that, A cleaning part is arranged on the connecting frame (33) for wiping the surface of the sampling cylinder (21).

7. An easy-to-adjust quantitative sampling device for inspection according to claim 6, characterized in that, The cleaning part includes a sliding groove (61) opened inside the connecting frame (33). A third slider (62) is slidably connected inside the sliding groove (61). An annular brush (63) adapted to the sampling cylinder (21) is fixedly connected between the two third sliders (62). Limiting rods (64) are fixedly connected to the mutually remote side surfaces of the two third sliders (62).

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