Sealing performance detection device

Abstract

The utility model discloses a sealing performance detection device which comprises a detection table, a fixed table is arranged in the middle of the upper surface of the detection table, three detection boxes are vertically arranged on the top of the fixed table in an equidistant array mode, and pipe covers are installed on the tops of fixed pipes arranged in the centers of the tops of the detection boxes in a threaded mode respectively. The left end of the top of the rear side of the detection box is communicated with a first air guide pipe, the other end of the first air guide pipe is communicated with a detection unit arranged at the left end of the fixed table, and the right end of the top of the rear side of the detection box is communicated with a second air guide pipe. According to the vacuum pipettor body detection device, simultaneous detection of a plurality of vacuum pipettor bodies is achieved, the detection efficiency is remarkably improved, the piston plate is driven by the electric telescopic rod to automatically complete gas injection and suction, manual operation is reduced, the detection process is accelerated, the labor intensity is reduced, and meanwhile, the detection process is convenient to observe due to the adoption of the detection box made of transparent acrylic materials.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a sealing detection device. Background Art

[0002] Vacuum pipettes are commonly used as liquid transfer tools in scientific experiments, medical diagnosis, drug development, and other fields. Their sealing performance is directly related to the accuracy of experimental results and the safety of operations. However, traditional vacuum pipette sealing testing methods often have problems such as low detection efficiency, complex operation, and test results that are easily affected by human factors.

[0003] Currently, most traditional vacuum pipette sealing detection devices use a one-by-one detection method, which cannot realize the simultaneous detection of multiple vacuum pipettes, resulting in long detection cycles and low efficiency. The air pressure needs to be manually adjusted during the detection process, and the operation steps are cumbersome and require high skills of the operator. During the detection process, improper operation may lead to deviations in the test results. Therefore, we proposed a sealing detection device. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model discloses a sealing detection device, the technical solution adopted is as follows: it includes a detection platform, a fixed platform is provided in the middle of the upper surface of the detection platform, three detection boxes are arranged in a vertical equidistant array on the top of the fixed platform, the top of the fixed tube arranged in the center of the top of the detection box is respectively threadedly installed with a tube cover, the left end of the top of the rear side of the detection box is connected with a first air guide pipe, the other end of the first air guide pipe is respectively connected with the detection unit arranged at the left end of the fixed platform, the right end of the top of the rear side of the detection box is connected with a second air guide pipe, and the second air guide pipe is a "U"-shaped structure, one end of the second air guide pipe is respectively located below the detection liquid level set inside the detection box, the other end of the second air guide pipe is respectively connected with the conical interface set on the right side of the fixed platform, and the right end of the fixed platform is provided with a tightening unit. The tightening unit includes a movable platform, a connecting frame, a sliding rod and a first compression spring. The connecting frame is a "U"-shaped structure, and the tops of the front and rear ends of the connecting frame are respectively fixedly connected to the movable platform through a second sliding groove arranged at the right end of the top of the detection platform. The top of the movable platform is equidistantly arrayed with T-shaped slots, and the vacuum pipette body is movably mounted in the T-shaped slots, and the detection ends of the vacuum pipette body are respectively movably plugged into the inner side of the conical interface, and the sliding rods are respectively slidably installed in the sliding holes arranged at the bottom of the front and rear ends of the connecting frame, and the left end of the sliding rod is respectively fixedly connected to the fixed plate arranged at the center of the bottom of the detection platform, and the right end of the sliding rod is respectively fixedly connected to the inner right end of the detection platform, and the outer right end of the sliding rod is respectively set with a first compression spring, and the left and right ends of the first compression spring are respectively fixedly connected to the fixed plate and the inner right end of the detection platform.

[0005] As an optimal technical solution of the present utility model, the detection unit includes a guide rod, a push block, an air guide bin, a second compression spring and a piston plate. There are three air guide bins, which are arranged in an equidistant array at the left end of the fixed platform. The top right end of the air guide bin is connected to the other end of the first air guide pipe. Guide rods are slidably installed in the through holes provided at the left end of the air guide bin, and the right ends of the guide rods are fixedly connected to the piston plates slidably installed on the inside of the air guide bin. A second compression spring is provided on the right side of the piston plate, and the left and right ends of the second compression spring are fixedly connected to the piston plate and the inner right end of the air guide bin, respectively. A push block is fixedly installed on the left end of the guide rod.

[0006] As a preferred technical solution of the present utility model, the detection unit also includes an electric telescopic rod, a first slide groove and a T-shaped push plate. The first slide groove is arranged at the top left end of the detection platform, and a T-shaped push plate is slidably installed on the inner side of the first slide groove. The bottom right end of the T-shaped push plate is provided with an electric telescopic rod, and the electric telescopic rod is fixedly installed on the left middle part of the fixed plate. The telescopic end of the electric telescopic rod is fixedly connected to the right bottom of the T-shaped push plate.

[0007] As a preferred technical solution of the present invention, the detection box is a transparent acrylic box.

[0008] As a preferred technical solution of the present invention, it further includes a push handle, which is fixedly installed on the middle right side of the mobile platform.

[0009] As a preferred technical solution of the present invention, it further includes mounting holes, wherein two groups of mounting holes are provided, and the mounting holes are symmetrically arranged at the left and right ends of the detection platform.

[0010] As a preferred technical solution of the present invention, it also includes a controller, which is fixedly mounted on the front surface of the fixed platform, the output end of the controller is electrically connected to the input end of the electric telescopic rod, and the input end of the controller is electrically connected to the output end of the external power supply.

[0011] The beneficial effects of the utility model are as follows: the utility model realizes pressure control of the air in the test box by using the electric telescopic rod to drive the piston plate to move in the air guide chamber, and combines the bubble observation method of the test liquid to intuitively judge the sealing performance of the vacuum pipette; in addition, it can simultaneously test multiple vacuum pipette bodies, significantly shortening the test cycle and improving work efficiency; a stable negative pressure environment is formed through automated control, and combined with the bubble observation of the test liquid, more accurate test results are provided; one-button control reduces human intervention, reduces the difficulty of operation, and improves the repeatability of the test;

[0012] In summary, the sealing detection device, through integrated design, realizes the simultaneous detection of multiple vacuum pipette bodies, significantly improving the detection efficiency. The electric telescopic rod drives the piston plate to automatically complete the injection and suction of gas, reducing manual operation, speeding up the detection process, and reducing labor intensity. At the same time, the use of a transparent acrylic detection box facilitates observation of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0015] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model.

[0017] In the figure: 1. Testing platform; 2. Fixed platform; 3. Controller; 4. Tightening unit; 41. Moving platform; 42. Connecting frame; 43. Slide rod; 44. First compression spring; 5. Testing unit; 51. Electric telescopic rod; 52. First slide groove; 53. T-shaped push plate; 54. Guide rod; 55. Push block; 56. Air guide chamber; 57. Second compression spring; 58. Piston plate; 6. Vacuum pipette body; 7. Push handle; 8. Second slide groove; 9. Fixed plate; 10. Conical interface; 11. Testing box; 12. Tube cover; 13. Mounting hole; 14. First air duct; 15. Second air duct; 16. Testing liquid. DETAILED DESCRIPTION

[0018] Example 1

[0019] like Figures 1 to 4As shown, the utility model discloses a sealing detection device, which adopts the technical solution of comprising a detection platform 1 and a mounting hole 13. The mounting hole 13 is provided with two groups, and the mounting holes 13 are symmetrically arranged at the left and right ends of the detection platform 1, respectively, to facilitate the staff to fix the detection platform 1. A fixing platform 2 is provided in the middle of the upper surface of the detection platform 1, and three detection boxes 11 are arranged in a vertical equidistant array on the top of the fixing platform 2. The top of the fixing tube arranged in the center of the top of the detection box 11 is respectively threadedly installed with a pipe cover 12. The right end of the top of the rear side of the detection box 11 is connected to the second air guide pipe 15, and the second air guide pipe 15 is a "U"-shaped structure. One end of the second air guide pipe 15 is respectively located below the liquid level of the detection liquid 16 arranged inside the detection box 11. The second air guide pipe 15 is a "U"-shaped structure. The other end of 15 is respectively communicated with the conical interface 10 provided on the right side of the fixed platform 2. The right end of the fixed platform 2 is provided with a tightening unit 4, which includes a movable platform 41, a connecting frame 42, a slide rod 43 and a first compression spring 44. The connecting frame 42 is a "U"-shaped structure. The tops of the front and rear ends of the connecting frame 42 pass through the second slide groove 8 provided on the right end of the top of the detection platform 1 and are fixedly connected to the movable platform 41. The top of the movable platform 41 is provided with an equidistant array of T-shaped card slots, and the vacuum pipette body 6 is movably installed in the T-shaped card slots. The detection ends of the vacuum pipette body 6 are respectively movably plugged into the inner side of the conical interface 10. The sliding holes provided at the bottom of the front and rear ends of the connecting frame 42 are respectively slidably installed with slide rods 43, and the left ends of the slide rods 43 are respectively connected to the bottom of the detection platform 1 The fixed plate 9 set in the center is fixedly connected, the right end of the slide rod 43 is fixedly connected to the inner right end of the detection platform 1, and the outer right end of the slide rod 43 is respectively provided with a first compression spring 44. The left and right ends of the first compression spring 44 are respectively fixedly connected to the fixed plate 9 and the inner right end of the detection platform 1. It also includes a push handle 7, which is fixedly installed in the middle of the right side of the movable platform 41. By loosening the push handle 7 and utilizing the elastic force of the first compression spring 44, the movable platform 41 is driven to move along the second slide groove 8 toward the fixed platform 2 through the connecting frame 42, so that the detection end of the vacuum pipette body 6 is inserted into the conical interface 10 and tightly pressed to ensure sealing. The left end of the top rear side of the detection box 11 is connected to the first air duct 14, and the other end of the first air duct 14 is respectively connected to the fixed platform 2 is connected to the detection unit 5 arranged at the left end, and the detection unit 5 includes a guide rod 54, a push block 55, an air guide bin 56, a second compression spring 57 and a piston plate 58. Three air guide bins 56 are provided, and the air guide bins 56 are arranged in an array at equal distances at the left end of the fixed platform 2. The top right ends of the air guide bins 56 are respectively connected to the other end of the first air guide pipe 14. The guide rods 54 are respectively slidably installed in the through holes provided at the left ends of the air guide bins 56. The right ends of the guide rods 54 are respectively fixedly connected to the piston plates 58 slidably installed inside the air guide bins 56. The right sides of the piston plates 58 are respectively provided with second compression springs 57, and the left and right ends of the second compression springs 57 are respectively fixedly connected to the piston plate 58 and the right end of the inside of the air guide bin 56. The left ends of the guide rods 54 are respectively fixedly installed.The detection unit 5 also includes an electric telescopic rod 51, a first slide groove 52 and a T-shaped push plate 53. The first slide groove 52 is arranged at the top left end of the detection platform 1, and a T-shaped push plate 53 is slidably installed on the inner side of the first slide groove 52. The bottom right end of the T-shaped push plate 53 is provided with an electric telescopic rod 51. The electric telescopic rod 51 is fixedly installed on the left middle part of the fixed plate 9. The telescopic end of the electric telescopic rod 51 is fixedly connected to the right bottom of the T-shaped push plate 53. The electric telescopic rod 51 works to make the T-shaped push plate 53 push the push block 55 along the first slide groove 52, and then push the piston plate 58 to move in the air guide bin 56 through the guide rod 54, squeezing and discharging the gas in the air guide bin to the detection box 11. At this time, the fixed pipe on the top of the detection box is not installed with the pipe cover 12, and the air is discharged from the fixed pipe, controlling the electric telescopic rod 51 to make the T-shaped push plate 53 returns to its original position, stopping the push of the push block 55. Under the action of the second compression spring 57, the piston plate 58 moves in the opposite direction, and the air guide chamber 56 sucks the air from the top of the inner side of the detection box 11 through the first air guide tube 14, forming a negative pressure environment. The detection box 11 is a transparent acrylic box, which is convenient for the staff to observe whether there are bubbles in the detection liquid 16. If there are no bubbles, it means that the vacuum pipette body 6 is well sealed. If there are bubbles, it means that the vacuum pipette body 6 is leaking and the sealing is poor. The controller 3 is also included. The controller 3 is fixedly mounted on the front surface of the fixed platform 2. The output end of the controller 3 is electrically connected to the input end of the electric telescopic rod 51, and the input end of the controller 3 is electrically connected to the output end of the external power supply. The setting of the controller 3 facilitates the staff to control the electric telescopic rod 51.

[0020] The working principle of the present invention is as follows: during the test, the vacuum pipette body 6 to be tested is placed in the T-shaped slot on the top of the mobile platform 41 to ensure that they are firmly fixed. Then, the push handle 7 is released, and under the action of the first compression spring 44, the connecting frame 42 drives the mobile platform 41 to move along the second slide groove 8 toward the fixed platform 2, so that the detection end of the vacuum pipette body 6 is movably inserted into the tapered interface 10, and the detection end of the vacuum pipette body 6 is pushed and pressed against the tapered interface 10 to ensure that the vacuum pipette body 6 is in contact with the tapered interface. The sealing between the openings 10 is ensured. Then, the staff can control the electric telescopic rod 51 to work through the controller 3. When the electric telescopic rod 51 is working, its telescopic end drives the T-shaped push plate 53 to move along the first slide groove 52 to the push block 55, and makes the T-shaped push plate 53 push the push block 55. The push block 55 drives the piston plate 58 through the guide rod 54 to squeeze the gas in the air guide bin 56. The squeezed gas enters the detection box 11 through the first air guide pipe 14. At this time, since the top of the fixed pipe on the detection box 11 has not yet been installed with a pipe cover, 12, so the air entering the test box 11 is discharged from the fixed pipe. Then, an appropriate amount of test liquid 16 is injected into each test box 11 to ensure that the test liquid 16 completely submerges the end of the second air guide pipe 15 located in the test box 11. Then, the pipe cover 12 is tightly fixed to the fixed pipe on the top of the test box 11 by rotating it to ensure the sealing during the test process. When the test is started, the controller 3 controls the electric telescopic rod 51 again to move the T-shaped push plate 53 to its original position. The plate 53 no longer pushes the push block 55, and under the action of the second compression spring 57, the piston plate 58 is pushed to move in the opposite direction, so that the air guide chamber 56 sucks the air from the inner top of the detection box 11 through the first air guide tube 14, forming a negative pressure environment. If the sealing performance of the vacuum pipette body 6 is good, no bubbles will appear in the detection liquid 16; otherwise, bubbles will be generated, thereby judging the airtightness of the vacuum pipette body 6. The detection box 11 is a transparent acrylic box, which makes it easy for staff to observe whether bubbles are generated in the detection liquid 16.

[0021] The circuit connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to the widely used existing technology.

[0022] Components not described in detail herein are prior art.

[0023] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. A sealing detection device, comprising a detection table (1), characterized in that: A fixed platform (2) is provided in the middle of the upper surface of the detection platform (1), and three detection boxes (11) are arranged in a vertical equidistant array on the top of the fixed platform (2). A pipe cover (12) is respectively threadedly installed on the top of the fixed pipe provided at the center of the top of the detection box (11). A first air guide pipe (14) is provided at the left end of the top of the rear side of the detection box (11). The other end of the first air guide pipe (14) is respectively connected to the detection unit (5) provided at the left end of the fixed platform (2). The rear of the detection box (11) is connected to the detection unit (5) provided at the left end of the fixed platform (2). A second air duct (15) is provided at the right end of the top of the side, and the second air duct (15) is a "U"-shaped structure. One end of the second air duct (15) is respectively located below the liquid level of the detection liquid (16) provided inside the detection box (11), and the other end of the second air duct (15) is respectively connected to the conical interface (10) provided on the right side of the fixed platform (2). A tightening unit (4) is provided at the right end of the fixed platform (2), and the tightening unit (4) includes a moving platform (41), a connecting frame (42), a sliding rod ( 43) and a first compression spring (44), the connecting frame (42) is a "U"-shaped structure, the tops of the front and rear ends of the connecting frame (42) respectively pass through the second slide groove (8) set at the right end of the top of the detection platform (1) and are fixedly connected to the mobile platform (41), the top of the mobile platform (41) is equidistantly arrayed with T-shaped card slots, and the T-shaped card slots are respectively movably mounted with vacuum pipette bodies (6), the detection ends of the vacuum pipette bodies (6) are respectively movably plugged into the inner side of the conical interface (10), and the connecting frame (42) is fixedly connected to the mobile platform (41) and the detection ends of the vacuum pipette bodies (6) are respectively movably plugged into the inner side of the conical interface (10). Slide rods (43) are slidably installed in the slide holes provided at the bottom of the front and rear ends of the frame (42), the left ends of the slide rods (43) are fixedly connected to the fixed plates (9) provided at the center of the bottom of the detection platform (1), the right ends of the slide rods (43) are fixedly connected to the inner right end of the detection platform (1), and the outer right ends of the slide rods (43) are respectively fitted with first compression springs (44), and the left and right ends of the first compression springs (44) are respectively fixedly connected to the fixed plates (9) and the inner right end of the detection platform (1).

2. A sealing detection device according to claim 1, characterized in that: The detection unit (5) comprises a guide rod (54), a push block (55), an air guide bin (56), a second compression spring (57) and a piston plate (58). Three air guide bins (56) are provided. The air guide bins (56) are arranged in an equidistant array at the left end of the fixed platform (2). The top right end of the air guide bin (56) is connected to the other end of the first air guide pipe (14). The guide rod (54) is slidably installed in the through hole provided at the left end of the air guide bin (56). The right end of the guide rod (54) is fixedly connected to the piston plate (58) slidably installed on the inner side of the air guide bin (56). The right side of the piston plate (58) is provided with a second compression spring (57), and the left and right ends of the second compression spring (57) are fixedly connected to the piston plate (58) and the inner right end of the air guide bin (56). The left end of the guide rod (54) is fixedly installed with a push block (55).

3. A sealing detection device according to claim 2, characterized in that: The detection unit (5) further comprises an electric telescopic rod (51), a first slide groove (52) and a T-shaped push plate (53), wherein the first slide groove (52) is arranged at the top left end of the detection platform (1), a T-shaped push plate (53) is slidably installed on the inner side of the first slide groove (52), an electric telescopic rod (51) is arranged at the bottom right end of the T-shaped push plate (53), the electric telescopic rod (51) is fixedly installed at the middle of the left side of the fixed plate (9), and the telescopic end of the electric telescopic rod (51) is fixedly connected to the right bottom of the T-shaped push plate (53).

4. The sealing detection device according to claim 1, characterized in that: The detection box (11) is a transparent acrylic box.

5. The sealing detection device according to claim 1, characterized in that: It also includes a push handle (7), which is fixedly mounted on the middle part of the right side of the moving platform (41).

6. The sealing detection device according to claim 1, characterized in that: It also includes mounting holes (13), wherein two groups of mounting holes (13) are provided, and the mounting holes (13) are symmetrically arranged at the left and right ends of the detection platform (1).

7. The sealing detection device according to claim 3, characterized in that: The device further comprises a controller (3), wherein the controller (3) is fixedly mounted on the front surface of the fixed platform (2), the output end of the controller (3) is electrically connected to the input end of the electric telescopic rod (51), and the input end of the controller (3) is electrically connected to the output end of an external power supply.

Images