Automatic concentrator

Abstract

The utility model discloses an automatic concentrator, which relates to the technical field of sample concentration and comprises a water bath box, a box cover is hinged to the top end of the water bath box, a nitrogen blowing module is embedded in the inner wall of the box cover, fixing components are arranged on two sides of the box cover, a partition plate is arranged on the inner wall of the water bath box, an inserting hole is formed in the surface of the partition plate, and a first sealing ring is arranged on the inner wall of the inserting hole. A sleeve is arranged at the bottom end of the partition plate, and a second sealing ring is embedded in one end of the sleeve. The test tube sealing device has the advantages that the servo motor drives the lifting screw rod to rotate, the lifting screw rod drives the lifting plate to move upwards through the transmission plate, the lifting plate pushes the test tube upwards through the positioning seat, the lifting plate is made to be attached to the second sealing ring, the sleeve is arranged outside the bottom of the test tube in a sleeving mode, and sealing of the sleeve is achieved; therefore, high-temperature steam is prevented from being sprayed out and scalding the wrist when the test tube is separated from the first sealing ring, and safety is higher.

Description

Technical Field

[0001] The utility model relates to a concentrator, in particular to an automatic concentrator, and belongs to the technical field of sample concentration. Background Art

[0002] The automatic concentrator concentrates the sample by blowing nitrogen into the surface of the heated sample. It is time-saving, easy to operate, and easy to control, and can quickly obtain the expected results. Therefore, it is widely used in pesticide residue analysis, commodity inspection, food, environment, pharmaceutical and other industries, and in sample preparation for liquid phase, gas phase and mass spectrometry analysis. The current automatic concentrator heats the test tube in a water bath and blows nitrogen into the test tube to evaporate and concentrate the sample in the test tube.

[0003] Among them, the "automatic concentrator" disclosed in application number "CN202021590745.5" includes a water bath, a flip cover, a nitrogen blowing module and an electric control box. The water bath is open at the top, and the flip cover is closed on the open top of the water bath. The nitrogen blowing module is installed under the flip cover to introduce nitrogen into the test tube placed in the water bath. The electric control box is used to control the heating of the water bath and control the nitrogen blowing module to blow out nitrogen. It also includes a sample rack, which includes a partition installed in the water bath. The partition divides the water bath into a water bath chamber and a nitrogen blowing chamber isolated from each other. A test tube jack is provided on the partition, and the test tube jack is used for inserting the test tube. The installation position of the sample rack satisfies that at least the upper end of the inserted test tube is in the nitrogen blowing chamber and the lower end is in the water bath chamber. After adopting the above scheme, the influence of water vapor generated by the water bath on sample concentration can be reduced.

[0004] However, the above design exposes a key flaw in actual operation: when the test tube needs to be taken out for subsequent processing after the experiment, the separation of the test tube and the sealing ring in the socket becomes a potential risk point. Since a large amount of high-temperature steam is generated due to the increase in water temperature during the water bath process, once the sealing ring is separated from the test tube, the high-temperature steam accumulated in the water bath cavity will quickly pass through the test tube socket and spray directly onto the operator's hands or face, posing a serious risk of burns. Especially during continuous operation or multi-batch processing, the operator may fail to take adequate precautions due to negligence or fatigue, further exacerbating this safety hazard. This defect not only affects the safety of laboratory operations, but may also cause the experiment to be interrupted. Utility Model Content

[0005] The utility model aims to provide an automatic concentrator to solve the problem that the high-temperature steam in the existing water bath cavity is sprayed out through the jack when collecting the test tube, which easily burns the wrist.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic concentrator, comprising a water bath, a box cover is hinged at the top of the water bath, a nitrogen blowing module is embedded in the inner wall of the box cover, fixing components are provided on both sides of the box cover, a partition is provided on the inner wall of the water bath, a plug hole is opened on the surface of the partition, a first sealing ring is provided on the inner wall of the plug hole, a sleeve is provided at the bottom end of the partition, a second sealing ring is embedded at one end of the sleeve, the partition divides the interior of the water bath into a water bath chamber and a nitrogen blowing chamber, a lifting plate is slidably connected to the inner wall of the water bath chamber, a guide box is provided on one side of the water bath, a lifting screw is rotatably connected to the inner wall of the guide box through a sealed bearing, the surface of the lifting screw is threadedly connected to a transmission plate through a screw nut, and a servo motor for driving the lifting screw to rotate is provided at the top of the guide box.

[0007] As a preferred technical solution of the utility model, the servo motor is a forward and reverse motor, the transmission shaft of the servo motor is connected to one end of the lifting screw, the surface of the transmission plate is slidably connected to the inner wall of the guide box, one side of the transmission plate is connected to one side of the lifting plate, a hydrophobic groove is provided on the surface of the lifting plate, a positioning seat is provided at the top of the lifting plate, the first sealing ring is a combined sealing ring, and a test tube is slidably connected to the inner wall of the first sealing ring.

[0008] As a preferred technical solution of the utility model, an electric heating plate is provided on the inner wall at the bottom of the water bath chamber, a liquid level sensor is provided on the inner wall on the back of the water bath chamber, and the liquid level sensor is placed inside the drain tank. A nitrogen exhaust pipe, a water supply pipe and a drain pipe are provided on the back of the water bath box, respectively. The interior of the nitrogen exhaust pipe is connected to the interior of the nitrogen blowing chamber, and the interiors of the water supply pipe and the drain pipe are both connected to the interior of the water bath chamber. A support platform is provided on the front of the water bath box, and a third sealing ring is embedded in the top of the water bath box, and the top of the third sealing ring is slidably connected to the bottom end of the box cover.

[0009] As a preferred technical solution of the utility model, a steam blast pipe is provided on the other side of the water bath, a fan is provided on the inner wall of the steam blast pipe, a steam outlet pipe is provided on one side of the guide box, the interior of the steam outlet pipe and the interior of the steam blast pipe are both connected to the interior of the water bath chamber, electric valves are provided on the surfaces of the steam outlet pipe, the steam blast pipe, the nitrogen exhaust pipe, the water adding pipe and the drain pipe, and a ventilation groove is provided on the surface of the water bath that slides with the surface of the transmission plate.

[0010] As a preferred technical solution of the utility model, a touch integrated machine is embedded on the surface of the support table, and the nitrogen blowing module, servo motor, electric heating plate, liquid level sensor, fan and five electric valves are electrically connected to the touch integrated machine.

[0011] As a preferred technical solution of the utility model, a positioning groove sliding with the surface of the bottom of the test tube is provided at the top of the positioning seat, a drainage groove connected with the positioning groove is provided at the bottom of the positioning seat, a handle is provided at the top of the box cover, a non-slip cover is provided on the surface of the handle, and fixing holes are provided on both sides of the box cover.

[0012] As a preferred technical solution of the utility model, the two fixing components each include a connecting seat, and the two connecting seats are respectively arranged on both sides of the water bath, and a sliding hole is opened on one side of the two connecting seats, and the inner walls of the two sliding holes are slidably connected with an insertion rod engaged with the fixing hole, and a reset spring is provided between the two insertion rods and the corresponding sliding holes.

[0013] As a preferred technical solution of the utility model, one end of the two insertion rods is set as an inclined surface, the surfaces of the two insertion rods are provided with push rods, the surfaces of the two connecting seats are provided with sliding grooves connected to the sliding holes, and the inner walls of the two sliding grooves are respectively slidably connected to the surfaces of the two push rods.

[0014] Compared with the related art, the automatic concentrator provided by the utility model has the following beneficial effects:

[0015] 1. The servo motor drives the lifting screw to rotate, and the lifting screw drives the lifting plate to move upward through the transmission plate. The lifting plate pushes the test tube upward through the positioning seat, so that the lifting plate fits the second sealing ring, and the sleeve is set outside the bottom of the test tube to achieve the sealing of the sleeve, thereby preventing high-temperature steam from spraying out and scalding the wrist when the test tube is separated from the first sealing ring, which is safer;

[0016] 2. The downward rotating box cover pushes the plug rod through the inclined surface, causing the plug rod to retract into the inside of the sliding hole. Therefore, when sealing the water bath box, there is no need to manually pull the two push rods, which is more convenient. The reset spring will extend and push the plug rod to move, causing the plug rod to be inserted into the fixing hole, completing the fixation of the box cover and ensuring the sealing effect of the box cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the back structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the explosion structure of the water bath box of the utility model;

[0021] Figure 5 This is a structural schematic diagram of the lifting plate of the utility model;

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the lifting plate of the utility model;

[0023] Figure 7 For this utility model Figure 6 A schematic diagram of the enlarged structure at point A;

[0024] Figure 8 This is a schematic diagram of the top cross-sectional structure of the fixing component of the utility model.

[0025] In the figure: 1. water bath; 2. box cover; 3. nitrogen blowing module; 4. fixing component; 41. connecting seat; 42. sliding hole; 43. plug rod; 44. reset spring; 45. push rod; 46. slide groove; 5. partition; 6. plug hole; 7. first sealing ring; 8. sleeve; 9. second sealing ring; 10. water bath chamber; 11. nitrogen blowing chamber; 12. lifting plate; 13. guide box; 14. lifting screw rod; 15. transmission plate; 16. servo motor; 17. drain groove; 18. positioning seat; 19. test tube; 20. electric heating plate; 21. liquid level sensor; 22. nitrogen exhaust pipe; 23. water adding pipe; 24. drainage pipe; 25. support table; 26. steam blowing pipe; 27. steam outlet pipe; 28. ventilation groove; 29. ​​touch all-in-one machine; 30. positioning groove; 31. drainage groove; 32. handle; 33. third sealing ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-8The utility model provides an automatic concentrator, including a water bath 1, a box cover 2 is hinged at the top of the water bath 1, a nitrogen blowing module 3 is embedded in the inner wall of the box cover 2, fixing components 4 are provided on both sides of the box cover 2, a partition 5 is fixedly provided on the inner wall of the water bath 1, a plug hole 6 is opened on the surface of the partition 5, six plug holes 6 are provided, a first sealing ring 7 is fixedly provided on the inner wall of the plug hole 6, a sleeve 8 is fixedly provided at the bottom end of the partition 5, a second sealing ring 9 is embedded at one end of the sleeve 8, the partition 5 divides the interior of the water bath 1 into a water bath chamber 10 and a nitrogen blowing chamber 11, a lifting plate 12 is slidably connected to the inner wall of the water bath chamber 10, a guide box 13 is fixedly provided on one side of the water bath 1, and the inner wall of the guide box 13 A lifting screw 14 is rotatably connected through a sealed bearing, and a transmission plate 15 is threadedly connected to the surface of the lifting screw 14 through a screw nut. A servo motor 16 for driving the lifting screw to rotate is fixedly arranged at the top of the guide box 13. The jack 6 is used to slide into a test tube 19, and the test tube 19 fits with the inner wall of the first sealing ring 7, thereby achieving the barrier between the water bath chamber 10 and the nitrogen blowing chamber 11. The servo motor 16 is started, and the servo motor 16 drives the lifting screw 14 to rotate. The lifting screw 14 drives the lifting plate 12 to move upward through the transmission plate 15, so that the top of the lifting plate 12 fits with the bottom end of the second sealing ring 9, and the sleeve 8 is sleeved on the outside of the bottom of the test tube 19 to achieve the sealing of the sleeve 8.

[0028] The servo motor 16 is a forward and reverse motor, and the transmission shaft of the servo motor 16 is fixedly connected to one end of the lifting screw 14. The surface of the transmission plate 15 is slidably connected to the inner wall of the guide box 13, and one side of the transmission plate 15 is fixedly connected to one side of the lifting plate 12. A hydrophobic groove 17 is provided on the surface of the lifting plate 12, and there are four hydrophobic grooves 17. A positioning seat 18 is fixedly provided on the top of the lifting plate 12, and there are six positioning seats 18. The first sealing ring 7 is a combined sealing ring, and a test tube 19 is slidably connected to the inner wall of the first sealing ring 7. Hot water passes through the hydrophobic groove 17 and the combined sealing ring when the lifting plate 12 moves upward.

[0029] An electric heating plate 20 is fixedly provided on the inner wall at the bottom of the water bath chamber 10, a liquid level sensor 21 is fixedly provided on the inner wall at the back of the water bath chamber 10, and the liquid level sensor 21 is placed inside the hydrophobic groove 17. A nitrogen exhaust pipe 22, a water supply pipe 23 and a drain pipe 24 are fixedly provided on the back of the water bath box 1, respectively. The interior of the nitrogen exhaust pipe 22 is connected to the interior of the nitrogen blowing chamber 11, and the interiors of the water supply pipe 23 and the drain pipe 24 are both connected to the interior of the water bath chamber 10. A support platform 25 is fixedly provided on the front of the water bath box 1, and a third sealing ring 33 is embedded at the top of the water bath box 1, and the top of the third sealing ring 33 is slidably connected to the bottom end of the box cover 2.

[0030] A steam blast pipe 26 is fixedly provided on the other side of the water bath 1, and a fan is fixedly provided on the inner wall of the steam blast pipe 26. A steam outlet pipe 27 is fixedly provided on one side of the guide box 13. The interior of the steam outlet pipe 27 and the interior of the steam blast pipe 26 are both connected to the interior of the water bath chamber 10. Electric valves are fixedly provided on the surfaces of the steam outlet pipe 27, the steam blast pipe 26, the nitrogen exhaust pipe 22, the water adding pipe 23 and the drain pipe 24. A ventilation groove 28 sliding with the surface of the transmission plate 15 is provided on the surface of the water bath 1. The pipeline is blocked by closing the electric valve corresponding to the pipeline, and the fan is started. The fan generates an airflow, which passes through the steam outlet pipe 27, thereby discharging the high-temperature steam inside the water bath chamber 10. The nitrogen exhaust pipe 22 is used to discharge the nitrogen blasted by the nitrogen blowing module 3, the water adding pipe 23 is used to replenish the water inside the water bath chamber 10, and the drain pipe 24 is used to discharge the water inside the water bath chamber 10.

[0031] A touch integrated machine 29 is embedded on the surface of the support table 25, and the nitrogen blowing module 3, the servo motor 16, the electric heating plate 20, the liquid level sensor 21, the fan and the five electric valves are electrically connected to the touch integrated machine 29. The liquid level sensor 21 is used to detect the height of the liquid inside the water bath chamber 10 to avoid adding excessive water when adding water. The liquid level should be a certain distance away from the second sealing ring 9 to avoid the hot water being blocked inside the sleeve 8 after the lifting plate 12 rises.

[0032] A positioning groove 30 is provided at the top of the positioning seat 18, which slides with the surface of the bottom of the test tube 19. A drainage groove 31 connected to the positioning groove 30 is provided at the bottom of the positioning seat 18. A handle 32 is fixedly provided at the top of the box cover 2, and an anti-slip sleeve is fixedly provided on the surface of the handle 32. Fixing holes are provided on both sides of the box cover 2. The test tube 19 slides into the positioning groove 30, and the positioning groove 30 supports and limits the bottom of the test tube 19. Hot water will be stored in the gap between the positioning groove 30 and the test tube 19. This part of the hot water will be discharged through the drainage groove 31 after the lifting plate 12 rises.

[0033] The two fixing components 4 each include a connecting seat 41, and the two connecting seats 41 are respectively fixedly arranged on both sides of the water bath 1, and a sliding hole 42 is opened on one side of the two connecting seats 41. The inner walls of the two sliding holes 42 are slidably connected with an insertion rod 43 engaged with the fixing hole, and a return spring 44 is fixedly arranged between the two insertion rods 43 and the corresponding sliding holes 42. The return spring 44 will stretch and push the insertion rod 43 to move, prompting the insertion rod 43 to be inserted into the fixing hole, thereby completing the fixation of the box cover 2 and ensuring the sealing effect of the box cover 2.

[0034] One end of the two insertion rods 43 is set as an inclined surface, and push rods 45 are fixedly provided on the surfaces of the two insertion rods 43. The surfaces of the two connecting seats 41 are provided with sliding grooves 46 connected to the sliding holes 42. The inner walls of the two sliding grooves 46 are respectively slidably connected to the surfaces of the two push rods 45. The downward rotating box cover 2 pushes the insertion rods 43 through the inclined surface, causing the insertion rods 43 to retract into the interior of the sliding holes 42. When sealing the water bath box 1, there is no need to manually pull the two push rods 45, which is more convenient.

[0035] When in use, first slide the test tube 19 into the inside of the jack 6, and the test tube 19 slides downward along the inner wall of the first sealing ring 7, so that the test tube 19 slides into the inside of the positioning groove 30, and then the box cover 2 rotates downward to push the insertion rod 43 through the inclined surface, so that the insertion rod 43 is retracted into the inside of the sliding hole 42, and then the box cover 2 is supported by the water bath box 1, and the box cover 2 presses the third sealing ring 33, and the reset spring 44 stretches and pushes the insertion rod 43 to move, so that the insertion rod 43 is inserted into the fixing hole, and the box cover 2 is fixed;

[0036] The nitrogen blowing module 3 and the electric heating plate 20 are started by touching the integrated machine 29. The nitrogen blowing module 3 introduces nitrogen into the test tube 19 to accelerate evaporation. Water vapor is discharged through the nitrogen exhaust pipe 22 along with the nitrogen. The electric heating plate 20 adds water into the water bath chamber 10 and heats the test tube 19 with hot water. A timer program is provided inside the integrated machine 29 to select a suitable heating time according to the needs of the user.

[0037] When the test tube 19 needs to be collected, the box cover 2 is opened, and the servo motor 16 is started by touching the integrated machine 29. The servo motor 16 drives the lifting screw 14 to rotate, and the lifting screw 14 drives the lifting plate 12 to move upward through the transmission plate 15. The lifting plate 12 pushes the test tube 19 upward through the positioning seat 18, so that the top of the lifting plate 12 fits with the bottom of the second sealing ring 9, and the sleeve 8 is sleeved on the outside of the bottom of the test tube 19 to achieve the sealing of the sleeve 8. Then the test tube 19 is pulled out, and the high-temperature steam inside the water bath chamber 10 will be blocked by the lifting plate 12 and the second sealing ring 9, and cannot be sprayed out through the jack 6, thereby preventing the high-temperature steam from spraying out and scalding the wrist when the test tube 19 is separated from the first sealing ring 7, which is safer;

[0038] Furthermore, after the heating is completed, the fan is started by touching the integrated machine 29, and the electric valve corresponding to the steam pipe 26 and the electric valve corresponding to the steam outlet pipe 27 are opened. One end of the steam outlet pipe 27 is connected to an external pipeline, and the fan generates airflow, which passes through the steam outlet pipe 27 to discharge the high-temperature steam inside the water bath chamber 10, thereby preventing the high-temperature steam from being discharged through the jack 6 after the lifting plate 12 moves downward, thereby preventing the high-temperature steam from being sprayed into the room.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic concentrator, comprising a water bath (1), characterized in that: The top of the water bath (1) is hingedly connected with a box cover (2), the inner wall of the box cover (2) is embedded with a nitrogen blowing module (3), both sides of the box cover (2) are provided with fixing components (4), the inner wall of the water bath (1) is provided with a partition (5), the surface of the partition (5) is provided with a plug hole (6), the inner wall of the plug hole (6) is provided with a first sealing ring (7), the bottom end of the partition (5) is provided with a sleeve (8), one end of the sleeve (8) is embedded with a second sealing ring (9), the partition (5) seals the water bath The interior of the water bath chamber (1) is divided into a water bath chamber (10) and a nitrogen blowing chamber (11), the inner wall of the water bath chamber (10) is slidably connected to a lifting plate (12), one side of the water bath box (1) is provided with a guide box (13), the inner wall of the guide box (13) is rotatably connected to a lifting screw (14) through a sealed bearing, the surface of the lifting screw (14) is threadedly connected to a transmission plate (15) through a screw nut, and the top end of the guide box (13) is provided with a servo motor (16) for driving the lifting screw (14) to rotate.

2. The automatic concentrator according to claim 1, characterized in that: The servo motor (16) is a forward and reverse motor, the transmission shaft of the servo motor (16) is connected to one end of the lifting screw (14), the surface of the transmission plate (15) is slidably connected to the inner wall of the guide box (13), one side of the transmission plate (15) is connected to one side of the lifting plate (12), the surface of the lifting plate (12) is provided with a hydrophobic groove (17), the top of the lifting plate (12) is provided with a positioning seat (18), the first sealing ring (7) is a combined sealing ring, and the inner wall of the first sealing ring (7) is slidably connected to a test tube (19).

3. The automatic concentrator according to claim 2, characterized in that: The inner wall at the bottom of the water bath chamber (10) is provided with an electric heating plate (20), the inner wall at the back of the water bath chamber (10) is provided with a liquid level sensor (21), and the liquid level sensor (21) is placed inside the hydrophobic groove (17). The back of the water bath box (1) is provided with a nitrogen exhaust pipe (22), a water supply pipe (23) and a drainage pipe (24), respectively. The interior of the nitrogen exhaust pipe (22) is connected to the interior of the nitrogen blowing chamber (11), and the interiors of the water supply pipe (23) and the drainage pipe (24) are both connected to the interior of the water bath chamber (10). The front of the water bath box (1) is provided with a support platform (25), and the top of the water bath box (1) is embedded with a third sealing ring (33), and the top of the third sealing ring (33) is slidably connected to the bottom of the box cover (2).

4. The automatic concentrator according to claim 3, characterized in that: A steam blast pipe (26) is provided on the other side of the water bath (1), and a fan is provided on the inner wall of the steam blast pipe (26). A steam outlet pipe (27) is provided on one side of the guide box (13). The interior of the steam outlet pipe (27) and the interior of the steam blast pipe (26) are both connected to the interior of the water bath chamber (10). Electric valves are provided on the surfaces of the steam outlet pipe (27), the steam blast pipe (26), the nitrogen exhaust pipe (22), the water supply pipe (23) and the drain pipe (24). A ventilation groove (28) that slides with the surface of the transmission plate (15) is provided on the surface of the water bath (1).

5. The automatic concentrator according to claim 4, characterized in that: A touch integrated machine (29) is embedded on the surface of the support platform (25), and the nitrogen blowing module (3), the servo motor (16), the electric heating plate (20), the liquid level sensor (21), the fan and the five electric valves are all electrically connected to the touch integrated machine (29).

6. The automatic concentrator according to claim 2, characterized in that: The top end of the positioning seat (18) is provided with a positioning groove (30) which slides with the surface of the bottom of the test tube (19); the bottom end of the positioning seat (18) is provided with a drainage groove (31) which is connected with the positioning groove (30); the top end of the box cover (2) is provided with a handle (32); the surface of the handle (32) is provided with an anti-slip cover; and fixing holes are provided on both sides of the box cover (2).

7. The automatic concentrator according to claim 6, characterized in that: The two fixing components (4) each include a connecting seat (41), and the two connecting seats (41) are respectively arranged on both sides of the water bath (1). A sliding hole (42) is provided on one side of the two connecting seats (41). The inner walls of the two sliding holes (42) are slidably connected with an insertion rod (43) engaged with the fixing hole, and a return spring (44) is provided between the two insertion rods (43) and the corresponding sliding holes (42).

8. The automatic concentrator according to claim 7, characterized in that: One end of the two insertion rods (43) is set as an inclined surface, the surfaces of the two insertion rods (43) are provided with push rods (45), the surfaces of the two connecting seats (41) are provided with sliding grooves (46) connected to the sliding holes (42), and the inner walls of the two sliding grooves (46) are respectively slidably connected to the surfaces of the two push rods (45).

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