A fixed dose automatic sample adding device

Abstract

The present invention provides a fixed-dose automatic sample adding device, including a housing, an adjustment base, a hatch, a hinge, a motor, a main gear, a capping device, a partition, a quick-connection tube, a feed switch, a digital flow meter, a feed pipe, a regulating valve, a dropper, a fixed plate, a baffle, a quantitative rotating device, a cap feeding pipeline, a mounting frame and a single-chip microcomputer, wherein the adjustment base is fixed to the bottom of the housing; the motor is fixed to the center of the bottom plate; the main gear is mounted on the rotating shaft of the motor; the capping device is evenly distributed around the main gear; and the digital flow meter is fixed below the feed switch. The capping device, the quick-connection tube and the quantitative rotating device of the present invention are simple in structure, easy to adjust, and compact in size, and can realize automatic sample adding, can perform automatic sampling in a field environment, have high sampling accuracy, are easy to realize sampling in a sealed environment, protect the personal safety of operators, have good safety and stability, and are convenient for market promotion and application.

Description

Technical Field

[0001] The invention belongs to the technical field of sample adding devices, and in particular relates to a fixed-dose automatic sample adding device. Background Art

[0002] The sample loading device is a commonly used device in various disciplines such as molecular genetics, microbiology, cell biology, biochemistry, chemical engineering and energy science. Its application range is very wide, including medicine, food, agriculture, forestry, horticulture, chemical industry, metallurgy, oil production and environmental protection of new substrates.

[0003] With the advancement of technology, automatic sampling equipment is increasingly used in biochemical research, physical and chemical property analysis, medical testing and other fields. Most of these automatic sampling devices are used in laboratories with relatively stable environments. However, in many cases, the sampling environment is not as stable as that in the laboratory. For example, when sampling in offshore oil wells or in harsh outdoor environments, manual sampling can easily lead to formaldehyde or other volatile and toxic chemical reagents that can cause damage to the samplers.

[0004] Therefore, it is very necessary to invent a fixed-dose automatic sample adding device. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a fixed-dose automatic sampling device to solve the problems that the existing sampling devices cannot perform automatic sampling in the field environment, have poor sampling accuracy, are difficult to achieve sampling in a sealed environment, and are likely to cause personal harm to operators. A fixed-dose automatic sample adding device comprises a shell, an adjustment base, a hatch, a hinge, a motor, a main gear, a capping device, a partition, a quick-connect pipe, a feed switch, a digital flow meter, a material distribution pipe, a regulating valve, a dropper, a fixed plate, a baffle, a quantitative rotating device, a cap feeding pipeline, a mounting frame and a single-chip computer. The upper part of the shell is a circular arc structure, and the lower part is a transparent acrylic shell with a plane structure; the adjustment base is fixed to the bottom of the shell; the hatch is fixed to the shell by a hinge; the motor is fixed to the center position of the inner surface of the bottom plate of the shell; the main gear is mounted on the rotating shaft of the motor; the capping device is evenly distributed around the main gear in a circular ring shape; the partition is fixed to the inner wall of the shell; the quick-connect pipe is installed on one side of the top of the shell, and the top of the quick-connect pipe is threaded; the feed switch is installed on the upper part of the quick-connect pipe; the digital flow meter is fixed below the feed switch; the material distribution pipe is connected to the end of the quick-connect pipe and is horizontally installed at the top of the device;

[0006] The regulating valve is installed on the hole at the bottom of the material distribution pipe; one end of the dropper is connected to the outlet of the regulating valve and passes through the fixing plate; the fixing plate is fixed on the inner wall of the middle part of the shell; the baffle is fixed on one side of the fixing plate; the quantitative rotating device is fixed on the mounting frame; the mounting frame is fixed on the top of the shell; the cap delivery pipeline is spirally distributed on the outer surface of the shell;

[0007] The single chip microcomputer is installed at the bottom of the shell, and is connected to the steering gear, motor, air pressure drive and digital flow meter through wires; the cover screwing device includes a rotating shaft, a driven gear, a sleeve, a compression spring, a hinge and a clamping plate, the rotating shaft is fixed to the lower part of the driven gear and installed on the bottom plate of the shell; the driven gear is meshed with the main gear; the sleeve is installed on the upper surface of the driven gear, and its diameter is the same as that of the driven gear; the compression spring is fixed to the inner wall of the sleeve; the clamping plate is fixed to the compression spring through a hinge; the The quantitative rotating device includes a steering gear, a pneumatic cylinder, a bearing, a telescopic rod, a reagent cover mounting plate, an arc-shaped through hole and a resin baffle. The steering gear is mounted on a mounting frame; the pneumatic cylinder is mounted on a rotating shaft of the steering gear; the bearing is mounted on the lower part of the pneumatic cylinder and embedded in the top of the outer shell; the telescopic rod is mounted on the pneumatic cylinder; the reagent cover mounting plate is fixed to the end of the telescopic rod; the arc-shaped through holes are evenly distributed on the reagent cover mounting plate; the resin baffle is mounted at the bottom of the arc-shaped through hole and evenly distributed on the circumference of the lower end of the through hole.

[0008] The bottom of the adjustment base is provided with three adjustable feet which can adjust the height independently. The bottom of the feet is made of nitrile rubber. The three feet are evenly distributed on the surface of the adjustment base, and an angle of 120 degrees is formed between the two feet.

[0009] The hatch and the shell are sealed in a staggered manner, and sealing rubber is installed at the contact part between the hatch and the shell.

[0010] The sleeve is a circular ring structure made of stainless steel; the sleeve diameter is the same as the outer diameter of the driven gear; the sleeve is installed on the upper surface of the driven gear and is concentric with the driven gear; the sleeve length is from the lower surface of the partition to the upper surface of the driven gear.

[0011] The upper end surface of the quick connection pipe is provided with threads, which are single-line triangular threads.

[0012] The clamping plate is a U-shaped plate made of plastic material with a rubber coating on the surface; the thickness of the rubber coating on the surface of the clamping plate is 0.2 cm to 0.5 cm; there are three clamping plates, which are installed on the compression spring through hinges.

[0013] The reagent cover mounting plate is a cylindrical structure; six arc-shaped through holes are evenly distributed on the circumferential edge of the reagent cover mounting plate; the upper part of the arc-shaped through hole of the reagent cover mounting plate is a groove, and the thickness of the groove is half the thickness of the reagent cover mounting plate; a spring pressing plate is installed on the upper end of the arc-shaped through hole of the reagent cover mounting plate; there is a mounting hole at the center position of the reagent cover mounting plate, and dropper holes are distributed between the two arc-shaped through holes.

[0014] The resin baffle is a sawtooth structure of resin material; the resin baffle is fixed at the bottom of the circumference of the arc-shaped through hole; the resin baffle shrinks toward the arc-shaped through hole to form a funnel-shaped structure.

[0015] The cap delivery pipeline is spirally wound around the outside of the shell; the feed port and the discharge port of the cap delivery pipeline are not on the same horizontal plane; the cap delivery pipeline uses a manual and electric push rod to transport the reagent caps.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The setting of the adjustable base of the present invention ensures the horizontal accuracy of the device by adjusting the lengths of the three legs respectively, which is conducive to accurate addition when sampling in places with uneven terrain such as the field, thereby improving the accuracy of the experimental results and meeting the high-precision sampling requirements.

[0018] 2. The setting of the sleeve of the present invention facilitates the placement and fixation of the test tube. The sleeve seals the space between the driven gear and the partition and provides an installation position for the compression spring, which is beneficial to the stable storage of the test tube, reduces vibration and shaking, improves the accuracy of sample addition and metering, and ensures the reliability of the experimental results.

[0019] 3. The setting of the clamping plate of the present invention automatically adjusts the angle of the clamping plate through the hinge, and gives the clamping plate a certain clamping force through the compression spring, so that the rubber coating on the surface of the clamping plate is in full contact with the test tube, and the test tube is tightly fixed in the through hole where the test tube is placed, which is beneficial to reduce the possibility of errors and is beneficial to the next step of automatically tightening the reagent cover, avoiding accidental falls and bumps, and ensuring safe use.

[0020] 4. The setting of the quick-connect tube of the present invention quickly forms a sealed connection with the device for placing the sample solvent through the threaded tube of the sampling device itself, which is beneficial to reduce the probability of solvent contamination during the sampling process, making the sampling process safer and more stable, while ensuring the safety of the operator.

[0021] 5. The setting of the reagent cover mounting plate of the present invention, through its unique shape relationship, when the servo drives the reagent cover mounting plate to rotate, the arc-shaped through holes on the edge of the mounting plate can realize the automatic filling of the reagent cover, which is beneficial to reduce manual labor, improve work efficiency, and reduce the possibility of contamination to the reagent caused by manual participation.

[0022] 6. The cap delivery pipeline of the present invention is set up by loading the reagent caps to be added into the cap delivery pipeline in advance, the pipeline is wrapped around the outside of the shell, and the reagent caps are gradually pushed forward by manually or electrically pushing the push rod, thereby realizing the automatic addition of the reagent caps. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of the cover delivery pipeline structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the reagent cover mounting plate of the present invention.

[0026] Figure 4 It is a front view of the cover screwing device structure of the present invention.

[0027] Figure 5 It is a top view of the cap screwing device structure of the present invention.

[0028] Figure 6 It is a schematic diagram of the electrical connection structure of the present invention.

[0029] In the figure:

[0030] 1-housing, 2-adjusting base, 3-hatch, 4-hinge, 5-motor, 6-main gear, 7-cover screwing device, 71-rotating shaft, 72-driven gear, 73-sleeve, 74-compression spring, 75-hinge, 76-clamping plate, 8-partition, 9-quick connection tube, 10-feeding switch, 11-digital flow meter, 12-distribution pipe, 13-regulating valve, 14-drip tube, 15-fixed plate, 16-baffle, 17-quantitative rotating device, 171-servo, 172-pneumatic cylinder, 173-bearing, 174-telescopic rod, 175-reagent cover mounting plate, 176-arc-shaped through hole, 177-resin baffle, cover delivery 18-pipeline, 19-mounting frame, 20-single chip microcomputer. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should belong to the scope of protection of the present invention:

[0032] As attached Figure 1 To Attachment Figure 6 Shown

[0033] The present invention provides a fixed-dose automatic sample adding device, comprising a shell 1, an adjustment base 2, a hatch 3, a hinge 4, a motor 5, a main gear 6, a cap screwing device 7, a partition 8, a quick-connection tube 9, a feed switch 10, a digital flow meter 11, a material distribution tube 12, a regulating valve 13, a dropper 14, a fixed plate 15, a baffle 16, a quantitative rotating device 17, a cap delivery pipeline 18, a mounting frame 19 and a single-chip computer 20. In the present invention, the device can be horizontally adjusted by the adjustment base 2 at the bottom of the device, so that the device always maintains a horizontal position during the sampling process. The reagent storage device forms a sealed connection with the quick-connection tube 9 through a triangular thread to transport the reagent to the sample adding device. The feed switch 10 controls the start and stop and size of the reagent transportation rate. The reagent passes through the pipeline through the digital flow meter 11 to count the reagent volume. At the initial position, the pneumatic cylinder 172 is stationary, the telescopic rod 174 is in a retracted position, the cap delivery pipeline 18 is not blocked by the baffle 16, and the regulating valve 13 can adjust the flow of the dropper 14. The size is controlled, the steering gear 171 rotates, and the reagent covers are pushed by the cover delivery pipe 18 into the arc-shaped through holes 176 on the reagent cover mounting plate 175 one by one, and are blocked by the resin baffle 177 to prevent further sliding. After the filling is completed, the pneumatic cylinder 172 is inflated, the telescopic rod 174 is extended, the baffle 16 blocks the cover delivery pipe 18, the dropper 14 is straightened, and is controlled by the steering gear 171 to be positioned at the specified position, deflected at a suitable angle, and the reagent is injected into the test tube, and then rotated at the set angle. The reagent cover is positioned directly above the test tube, and the telescopic rod 174 continues to extend to the top of the test tube. The motor 5 drives the main gear 6 to rotate, thereby driving the driven gear 72 meshing therewith to rotate the test tube, and the reagent cover is installed on the test tube. After the installation is completed, the motor 5 automatically stops, the telescopic rod 174 contracts, and the reagent cover is pulled by the test tube and falls off the resin baffle 177, completing the sample addition and sealing of the reagent. The operator takes out the sampled test tube from the cabin door 3, puts in a new test tube, and repeats the above operation.

[0034] The single chip microcomputer 20 is installed at the bottom of the housing 1, and is connected to the steering gear 171, the motor 5, the air pressure drive and the digital flow meter 11 through wires. The single chip microcomputer model is STC89C51.

[0035] The hatch 3 and the outer shell 1 are sealed in an alternating manner to form a concave-convex connection. The contact portion between the hatch 3 and the outer shell 1 is installed with sealing rubber, which is beneficial to ensure the overall sealing of the device, reduce the possibility of contamination of the sample by the external environment, and also ensure the safety of the operator.

[0036] The cover screwing device 7 comprises a rotating shaft 71, a driven gear 72, a sleeve 73, a compression spring 74, a hinge 75 and a clamping plate 76. The model of the steering gear 171 is MG995.

[0037] The sleeve 73 is an annular structure made of stainless steel, and the diameter of the sleeve 73 is the same as the outer diameter of the driven gear 72; and the installation position of the sleeve 73 is the upper surface of the driven gear 72, and is concentric with the driven gear 72; the length of the sleeve 73 is from the lower surface of the partition 8 to the upper surface of the driven gear 72. The setting of the sleeve 73 is convenient for the placement and fixation of the test tube. The sleeve 73 is used to close the space between the driven gear 72 and the partition 8, and provides an installation position for the compression spring 74, which is beneficial to the stable storage of the test tube, reduces vibration and shaking, improves the accuracy of sample addition and measurement, and ensures the reliability of the experimental results.

[0038] The upper surface of the quick-connect tube 9 is provided with threads, which are single-line triangular threads, and are conducive to quickly forming a reliable connection with the sample holding device, ensuring the reliability of the connection in harsh environments such as at sea or in the wild.

[0039] The clamping plate 76 is a U-shaped plate made of plastic material with a rubber coating on the surface. The thickness of the rubber coating on the surface of the clamping plate 76 is 0.2 cm to 0.5 cm. There are three clamping plates 76, which are installed on the compression spring 74 through the hinge 75. The angle of the clamping plate 76 is automatically adjusted through the hinge 75, and the clamping spring 74 gives the clamping plate 76 a certain clamping force, so that the rubber coating on the surface of the clamping plate 76 is fully in contact with the test tube, and the test tube is tightly fixed in the through hole where the test tube is placed, which is conducive to reducing the possibility of errors and facilitating the next step of automatically tightening the reagent cover to avoid accidental falls and bumps, thereby ensuring safe use.

[0040] The reagent cover mounting plate 175 is a cylindrical structure, and six arc-shaped through holes 176 are evenly distributed on the circumferential edge of the reagent cover mounting plate 175; the upper part of the arc-shaped through hole 176 of the reagent cover mounting plate 175 is a groove, and the thickness of the groove is half of the thickness of the reagent cover mounting plate 175, and a spring pressing plate is installed on the upper end of the arc-shaped through hole 176 of the reagent cover mounting plate 175, and there is a mounting hole at the center position of the reagent cover mounting plate 175, and a dropper hole is distributed between the two arc-shaped through holes 176. Through its unique shape relationship, when the servo 171 drives the reagent cover mounting plate 175 to rotate, the arc-shaped through holes 176 on the edge of the mounting plate can realize automatic filling of the reagent cover, which is conducive to reducing manual labor, improving work efficiency, and reducing the possibility of contamination of reagents caused by manual participation.

[0041] The resin baffle 177 is a serrated structure of resin material, which is fixed at the bottom of the circumference of the arc-shaped through hole 176, and the resin baffle 177 shrinks toward the arc-shaped through hole 176 to form a funnel-shaped structure, which is beneficial to prevent the reagent cover from slipping during the compensation process, and is also beneficial to smoothly release the reagent cover during the tightening process of the reagent cover, thereby improving the stability of the device.

[0042] The cap delivery pipe 18 is spirally wrapped around the outside of the shell 1. The feed port and the discharge port of the cap delivery pipe 18 are not on the same horizontal plane, and the cap delivery pipe 18 uses manual and electric push rods to transport reagent caps. By loading the reagent caps to be used into the cap delivery pipe 18 in advance, the reagent caps are automatically compensated, which is conducive to the automatic addition of reagent caps.

[0043] Utilizing the technical solution described in the present invention, or those skilled in the art designing a similar technical solution inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A fixed-dose automatic sample adding device, characterized in that: The invention comprises a housing (1), an adjusting base (2), a hatch (3), a hinge (4), a motor (5), a main gear (6), a cap screwing device (7), a partition (8), a quick connecting pipe (9), a feed switch (10), a digital flow meter (11), a material distribution pipe (12), a regulating valve (13), a dropper (14), a fixing plate (15), a baffle (16), a quantitative rotating device (17), a cap feeding pipe (18), a mounting frame (19) and a single chip computer (20). The upper part of the housing (1) is a circular arc structure, and the lower part is a transparent acrylic shell with a flat structure; the adjusting base (2) is fixed to the bottom of the housing (1); the hatch (3) is fixed to the housing (1) by a hinge (4). 1); the motor (5) is fixed at the center position of the inner surface of the bottom plate of the housing (1); the main gear (6) is mounted on the rotating shaft of the motor (5); the cover screwing device (7) is evenly distributed around the main gear (6) in a circular ring shape; the partition (8) is fixed on the inner wall of the housing (1); the quick connection pipe (9) is installed on one side of the top of the housing (1), and the top of the quick connection pipe (9) has a thread; the feed switch (10) is installed on the upper part of the quick connection pipe (9); the digital flow meter (11) is fixed below the feed switch (10); the distribution pipe (12) is connected to the end of the quick connection pipe (9) and is horizontally installed at the top of the device; The regulating valve (13) is mounted on the hole at the bottom of the material distribution pipe (12); one end of the dropper (14) is connected to the outlet of the regulating valve (13) and passes through the fixing plate (15); the fixing plate (15) is fixed to the inner wall of the middle part of the outer shell (1); the baffle (16) is fixed to one side of the fixing plate (15); the quantitative rotating device (17) is fixed to the mounting frame (19); the mounting frame (19) is fixed to the top of the outer shell (1); the cap delivery pipeline (18) is spirally distributed on the outer surface of the outer shell (1); The single chip microcomputer (20) is mounted on the bottom of the housing (1) and is connected to the steering gear (171), the motor (5), the pneumatic drive and the digital flow meter (11) through wires; the cover screwing device (7) comprises a rotating shaft (71), a driven gear (72), a sleeve (73), a compression spring (74), a hinge (75) and a clamping plate (76); the rotating shaft (71) is fixed to the lower part of the driven gear (72) and is mounted on the bottom plate of the housing (1); the driven gear (72) is meshed with the main gear (6); the sleeve (73) is mounted on the upper surface of the driven gear (72) and has the same diameter as the driven gear (72); the compression spring (74) is fixed to the inner wall of the sleeve (73); the clamping plate (76) is fixed to the compression spring (74) through the hinge (75); the quantitative rotating device (1 7) comprises a steering gear (171), a pneumatic cylinder (172), a bearing (173), a telescopic rod (174), a reagent cover mounting plate (175), an arc-shaped through hole (176) and a resin baffle (177), wherein the steering gear (171) is mounted on a mounting frame (19); the pneumatic cylinder (172) is mounted on a rotating shaft of the steering gear (171); the bearing (173) is mounted on the lower part of the pneumatic cylinder (172) and embedded in the top end of the housing (1); the telescopic rod (174) is mounted on the pneumatic cylinder (172); the reagent cover mounting plate (175) is fixed to the end of the telescopic rod (174); the arc-shaped through holes (176) are evenly distributed on the reagent cover mounting plate (175); and the resin baffle (177) is mounted at the bottom of the arc-shaped through hole (176) and evenly distributed on the circumference of the lower end of the through hole.

2. The fixed-dose automatic sample adding device according to claim 1, characterized in that: The bottom of the adjustment base (2) has three adjustment feet that can adjust the height autonomously. The bottom of the feet is made of nitrile rubber. The three feet are evenly distributed on the surface of the adjustment base (2), with an angle of 120 degrees between each other.

3. The fixed-dose automatic sample adding device according to claim 1, characterized in that: The hatch (3) and the outer shell (1) are sealed in a staggered manner, and a sealing rubber is installed at the contact portion between the hatch (3) and the outer shell (1).

4. The fixed-dose automatic sample adding device according to claim 1, characterized in that: The sleeve (73) is an annular structure made of stainless steel; the diameter of the sleeve (73) is the same as the outer diameter of the driven gear (72); the installation position of the sleeve (73) is the upper surface of the driven gear (72), and is concentric with the driven gear (72); the length of the sleeve (73) is from the lower surface of the partition (8) to the upper surface of the driven gear (72).

5. The fixed-dose automatic sample adding device according to claim 1, characterized in that: The upper surface of the quick-connect tube (9) is provided with threads, which are single-line triangular threads.

6. The fixed-dose automatic sample adding device according to claim 1, characterized in that: The clamping plate (76) is a U-shaped plate made of plastic material, with a rubber coating on the surface; the thickness of the rubber coating on the surface of the clamping plate (76) is 0.2 cm to 0.5 cm; the number of the clamping plates (76) is three, and they are mounted on the compression spring (74) through hinges (75).

7. The fixed-dose automatic sample adding device according to claim 1, characterized in that: The reagent cover mounting plate (175) is a cylindrical structure; six arc-shaped through holes (176) are evenly distributed on the circumferential edge of the reagent cover mounting plate (175); the upper part of the arc-shaped through hole (176) of the reagent cover mounting plate (175) is a groove, and the thickness of the groove is half the thickness of the reagent cover mounting plate (175); a spring pressing piece is installed at the upper end of the arc-shaped through hole (176) of the reagent cover mounting plate (175); the reagent cover mounting plate (175) has a mounting hole at the center position, and a dropper hole is distributed between the two arc-shaped through holes (176).

8. The fixed-dose automatic sample adding device according to claim 1, characterized in that: The resin baffle (177) is a sawtooth structure of a resin material; the resin baffle (177) is fixed at the bottom of the circumference of the arc-shaped through hole (176); the resin baffle (177) shrinks toward the arc-shaped through hole (176) to form a funnel-shaped structure.

9. The fixed-dose automatic sample adding device according to claim 1, characterized in that: The cap delivery pipe (18) is spirally wound around the outside of the housing (1); the feed port and the discharge port of the cap delivery pipe (18) are not on the same horizontal plane; the cap delivery pipe (18) uses a manual and electric push rod to transport the reagent caps.

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