Small continuous vacuum machine

Abstract

The utility model discloses a small-sized continuous vacuum machine, which relates to the technical field of freeze dryers and comprises a protective box, a cooling frame is arranged on the inner wall of the bottom end of the protective box, a through hole, an annular groove and four through grooves are respectively formed in the surface of the cooling frame, four guide frames are arranged at the top end of the cooling frame, and sliding grooves are formed in the surfaces of the four guide frames. Sliding blocks are connected to the inner walls of the four sliding grooves in a sliding mode, and non-slip mats are arranged on the surfaces of the four sliding blocks; the test tube fixing device has the advantages that the test tubes are inserted into the through holes, the four reset springs can extend and push the sliding blocks after the pressing grooves are loosened, the four sliding blocks push the anti-skid pads until the four anti-skid pads clamp the tops of the test tubes, and therefore the test tubes with different diameters are fixed, the application range is wide, the test tube fixing device is more flexible, the boosting rods can abut against the anti-falling grooves, and the test tubes are fixed. The sliding blocks are prevented from separating from the sliding grooves after the test tubes are drawn out, and structural stability is enhanced.

Description

Technical Field

[0001] The utility model relates to a vacuum machine, in particular to a small continuous vacuum machine, belonging to the technical field of freeze drying machines. Background Art

[0002] The vacuum freeze dryer is a widely used dryer that can be used to dry liquid materials. The principle of the vacuum freeze dryer is to freeze the material so that the water freezes into ice cubes, and then sublimate the ice in a negative pressure environment to achieve drying. The vacuum freeze dryer has an exhaust system, one is to evacuate the dryer cavity, and the other is to suck the solvent vapor evaporated from the material. The material is vacuum-dried at low temperature under a negative pressure vacuum state, which solves the problem of high hot air temperature and poor quality of the material after drying.

[0003] Among them, the "phospholipid vacuum continuous freeze-drying machine" disclosed in the application number "CN202120414431.8" includes "including a body, the side wall of the body is hinged with a cover, a placement groove is provided in the body, the placement groove is divided into multiple drying areas by partitions, and multiple placement plates are provided in the drying area. Multiple drying boxes are fixedly installed on the upper surface of the placement plate, and a drying groove is provided in the drying box, and a clamping mechanism and a locking mechanism are provided in the drying groove. Compared with the traditional one, the phospholipid test tubes are not simply inserted into the drying groove. During the insertion process, the clamping mechanism and the locking mechanism in the drying groove will position the test tubes to prevent the dryer from being hit or bumping during the movement. The test tubes inside the body will not move around, avoiding bumps and protecting the phospholipid test tubes. Moreover, to unlock, you only need to push the end of the test tube, and the end of the test tube will automatically pop out of the drying groove for easy removal. "

[0004] However, the above method still has the following defects: it can only fix test tubes with a single diameter, but cannot fix test tubes with multiple diameters, and has a narrow scope of application. Utility Model Content

[0005] The utility model aims to provide a small continuous vacuum machine to solve the problem that the existing vacuum machine cannot fix test tubes of various diameters and has a narrow application range as mentioned in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small continuous vacuum machine, comprising a protective box, a cooling rack is provided on the inner wall of the bottom end of the protective box, the surface of the cooling rack is respectively provided with through holes, annular grooves and four through grooves, four guide racks are provided on the top of the cooling rack, the surfaces of the four guide racks are respectively provided with sliding grooves, the inner walls of the four sliding grooves are slidably connected with sliders, the surfaces of the four sliders are respectively provided with anti-slip pads, test tubes are slidably connected between the four anti-slip pads, reset springs are respectively provided between the four sliders and the corresponding sliding grooves, and a tube removal assembly and a cooling assembly are respectively provided inside the protective box.

[0007] As a preferred technical solution of the utility model, the surfaces of the four guide frames are provided with anti-slip grooves connected to the slide grooves, the inner walls of the four anti-slip grooves are slidably connected with booster rods, and one end of the four booster rods is respectively connected to the bottom ends of the four sliding blocks.

[0008] As a preferred technical solution of the utility model, the tube taking assembly includes a slip ring and four arc grooves. The slip ring is slidably arranged on the inner wall of the annular groove. The surface of the slip ring is respectively provided with a rotation-assisting plate and four push plates. The surface of the rotation-assisting plate is provided with a pressure groove. The four rotation-assisting plates are evenly distributed in a ring shape. One end of the four rotation-assisting plates is set as an inclined surface, and the four arc grooves are opened on the inner wall of one end of the annular groove.

[0009] As a preferred technical solution of the utility model, the four arc grooves are evenly distributed in a ring shape, the inner walls of the four arc grooves are slidably connected with transmission blocks, the top ends of the four transmission blocks are connected to one end of the slip ring, and arc springs are provided between the four transmission blocks and the corresponding arc grooves.

[0010] As a preferred technical solution of the utility model, a miniature vacuum pump and four supporting legs are respectively provided at the bottom end of the protective box, a vacuum end of the miniature vacuum pump is provided with a vacuum pipe, the vacuum pipe is connected to the contact part of the protective box, a vacuum port connected to the inside of the vacuum pipe is opened on the surface of the protective box, a sealing cover is hinged at the top end of the protective box, and a handle is provided at the top end of the sealing cover.

[0011] As a preferred technical solution of the utility model, a partition is provided on the inner wall of the top of the protective box, the inner wall of the partition is connected to the surface of the cooling rack, the partition separates the interior of the protective box into a water storage chamber, and a water inlet pipe, a water outlet pipe and a water level observation window are respectively provided on the front of the protective box, the interior of the water inlet pipe and the interior of the water outlet pipe are connected to the interior of the water storage chamber, the surface of the water inlet pipe and the surface of the water outlet pipe are provided with electric valves, a control box is provided on one side of the protective box, a single-chip microcomputer is provided inside the control box, and a switch panel is provided on the surface of the control box.

[0012] As a preferred technical solution of the utility model, the inner wall of the front side of the cooling rack is respectively provided with a temperature sensor and an air pressure sensor, the inner wall of the bottom end of the cooling rack is provided with a support platform, the top end of the support platform is embedded with a buffer pad, the surface of the buffer pad is slidably connected to the surface of the test tube, the buffer pad and two anti-slip pads are made of silicone rubber material, and the partition, sealing cover, exhaust pipe, cooling rack and protective box are all made of insulation material.

[0013] As a preferred technical solution of the utility model, the four cooling components all include semiconductor refrigerators and waterproof covers, the four semiconductor refrigerators are all embedded in the surface of the cooling rack, the four semiconductor refrigerators are evenly distributed in a ring shape, the four waterproof covers are all arranged on the surface of the cooling rack, the four waterproof covers are respectively sleeved on the outside of the four semiconductor refrigerators, and the surfaces of the four waterproof covers are all embedded with heat sinks.

[0014] Compared with the related art, the small continuous vacuum machine provided by the utility model has the following advantages:

[0015] Beneficial effects:

[0016] 1. Insert the test tube into the through hole. After releasing the pressure groove, the four reset springs will extend and push the slider. The four sliders push the anti-skid pads until the four anti-skid pads clamp the top of the test tube, thereby fixing test tubes of different diameters. It has a wide range of applications and is more flexible. The booster rod will be held back by the anti-slip groove to prevent the slider from escaping from the slide groove after the test tube is pulled out, thereby enhancing the stability of the structure.

[0017] 2. Place your fingers on the pressure groove and push the rotation-assisting plate. The rotation-assisting plate drives the slip ring to rotate, and the slip ring drives the four push plates to rotate. The four push plates push the four push rods through the inclined surfaces. The four push rods drive the four sliders to move, causing the four sliders to retract into the four slide grooves, and the four sliders and four anti-slip pads to open. There is no need to move the four push rods one by one, which improves the efficiency of fixing and collecting the test tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 This is a schematic diagram of the structure of the cooling rack of the utility model;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the cooling rack of the utility model from top view;

[0023] Figure 6 It is a structural schematic diagram of the pipe taking assembly of the utility model.

[0024] In the figure: 1, protective box; 2, cooling rack; 3, through hole; 4, annular groove; 5, through groove; 6, tube removal assembly; 61, slip ring; 62, rotation-assisting plate; 63, push plate; 64, pressure groove; 65, inclined surface; 66, transmission block; 67, arc groove; 68, arc spring; 7, cooling assembly; 71, semiconductor refrigerator; 72, waterproof cover; 73, heat sink; 8, guide frame; 9, slide groove; 10, slide block; 11. reset spring; 12. anti-skid pad; 13. test tube; 14. anti-slip groove; 15. booster rod; 16. micro vacuum pump; 17. support leg; 18. exhaust pipe; 19. exhaust port; 20. sealing cover; 21. handle; 22. water inlet pipe; 23. water outlet pipe; 24. water level observation window; 25. control box; 26. partition; 27. water storage chamber; 28. support table; 29. ​​buffer pad. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-6 The utility model provides a small continuous vacuum machine, including a protective box 1, a cooling rack 2 is fixedly arranged on the inner wall at the bottom end of the protective box 1, and a through hole 3, an annular groove 4 and four through grooves 5 are respectively opened on the surface of the cooling rack 2, and four guide racks 8 are fixedly arranged on the top of the cooling rack 2, and slide grooves 9 are opened on the surfaces of the four guide racks 8. Slide blocks 10 are slidably connected to the inner walls of the four slide grooves 9, and anti-skid pads 12 are fixedly arranged on the surfaces of the four slide blocks 10. Test tubes 13 are slidably connected between the four anti-skid pads 12, and reset springs 11 are fixedly arranged between the four slide blocks 10 and the corresponding slide grooves 9. A tube removal component 6 and a cooling component 7 are respectively provided inside the protective box 1, and the reset spring 11 will stretch and push the slide block 10, and the slide block 10 pushes the anti-skid pad 12, and the four anti-skid pads 12 clamp the top of the test tube 13, thereby fixing the test tube 13.

[0027] The surfaces of the four guide frames 8 are provided with anti-slip grooves 14 connected to the slide groove 9. The inner walls of the four anti-slip grooves 14 are slidably connected with booster rods 15. One ends of the four booster rods 15 are fixedly connected to the bottom ends of the four sliders 10 respectively. The sliders 10 drive the booster rods 15 to move until the booster rods 15 are supported by the anti-slip grooves 14, thereby preventing the sliders 10 from detaching from the slide groove 9 after the test tube 13 is pulled out, thereby enhancing the stability of the structure.

[0028] The tube removal assembly 6 includes a slip ring 61 and four arc grooves 67. The slip ring 61 is slidably arranged on the inner wall of the annular groove 4. A rotation-assisting plate 62 and four push plates 63 are fixedly arranged on the surface of the slip ring 61. A pressing groove 64 is opened on the surface of the rotation-assisting plate 62. The four rotation-assisting plates 62 are evenly distributed in an annular shape. One end of the four rotation-assisting plates 62 is set as an inclined surface 65. The four arc grooves 67 are all opened on the inner wall of one end of the annular groove 4. When the finger is pressed against the pressing groove 64 and the rotation-assisting plate 62 is pushed, the rotation-assisting plate 62 The slip ring 61 is driven to rotate, and the slip ring 61 drives the four push plates 63 to rotate. The four push plates 63 push the four booster rods 15 through the inclined surfaces 65, causing the four booster rods 15 to move along the anti-slip grooves 14 in the direction away from the slip ring 61. The four booster rods 15 drive the four sliders 10 to move, causing the four sliders 10 to retract into the four slide grooves 9, and spread the four sliders 10 and the four anti-slip pads 12. There is no need to move the four booster rods 15 in sequence, thereby improving the efficiency of fixing and collecting the test tubes 13.

[0029] The four arc grooves 67 are evenly distributed in a ring shape, and the inner walls of the four arc grooves 67 are slidably connected with transmission blocks 66. The top ends of the four transmission blocks 66 are fixedly connected to one end of the slip ring 61, and arc springs 68 are fixedly arranged between the four transmission blocks 66 and the corresponding arc grooves 67. The rotating slip ring 61 can drive the transmission block 66 to rotate, and the transmission block 66 will compress the arc spring 68. When the finger is out of the pressing groove 64, the arc spring 68 will extend and push the transmission block 66 until the transmission block 66 is supported by the arc groove 67. The transmission block 66 drives the push plate 63 to rotate through the slip ring 61, prompting the push plate 63 to move away from the booster rod 15. At this time, the push plate 63 cannot block the booster rod 15, and fixes the slip ring 61 to ensure the clamping effect of the four sliders 10 and the four anti-slip pads 12.

[0030] The bottom of the protective box 1 is fixed with a micro vacuum pump 16 and four supporting legs 17. The exhaust end of the micro vacuum pump 16 is fixed with an exhaust pipe 18. The exhaust pipe 18 is fixedly connected to the contact part of the protective box 1. The surface of the protective box 1 is provided with an exhaust port 19 connected to the inside of the exhaust pipe 18. The top of the protective box 1 is hinged with a sealing cover 20. The top of the sealing cover 20 is fixed with a handle 21. Start the micro vacuum pump 16. The micro vacuum pump 16 pumps out the gas inside the test tube 13 through the exhaust pipe 18 and the exhaust port 19, causing the air pressure inside the test tube 13 to decrease. As the air pressure decreases, the freezing point of water does not change much, but the boiling point becomes lower and lower, approaching the freezing point. When the pressure drops to a certain vacuum degree, the boiling point and freezing point of water coincide, and it can sublimate to achieve low-temperature drying. The water vapor generated by sublimation is pumped out by the micro vacuum pump 16.

[0031] A partition 26 is fixedly arranged on the inner wall at the top of the protection box 1, and the inner wall of the partition 26 is fixedly connected to the surface of the cooling rack 2. The partition 26 separates the interior of the protection box 1 into a water storage chamber 27. A water inlet pipe 22, a water outlet pipe 23 and a water level observation window 24 are fixedly arranged on the front of the protection box 1. The interior of the water inlet pipe 22 and the interior of the water outlet pipe 23 are both connected to the interior of the water storage chamber 27. The surfaces of the water inlet pipe 22 and the water outlet pipe 23 are both fixedly arranged with electric valves. A control box 25 is fixedly arranged on one side of the protection box 1. A single-chip microcomputer is fixedly arranged inside the control box 25. A switch panel is fixedly arranged on the surface of the control box 25. A proper amount of water is added to the interior of the water storage chamber 27 through the water inlet pipe 22 to The heat sink 73 at the heat dissipation end of the semiconductor refrigerator 71 is cooled. A program is set inside the single-chip microcomputer, which is started through the switch panel. The single-chip microcomputer receives the values ​​of the temperature sensor and the air pressure sensor. The single-chip microcomputer first starts the semiconductor refrigerator 71 until the interior of the cooling rack 2 drops to a preset low temperature so that the material inside the test tube 13 can solidify. Then the single-chip microcomputer starts the micro vacuum pump 16 to reduce the air pressure inside the cooling rack 2 to a preset low pressure so as to cooperate with the low temperature to cause the ice inside the test tube 13 to sublimate. It should be added that the cooling rack 2 is connected to the interior of the test tube 13 through the through hole 3 and the through groove 5. The air temperature and air pressure inside the cooling rack 2 are similar to the air temperature and air pressure inside the test tube 13.

[0032] The inner wall of the front side of the cooling rack 2 is respectively provided with a temperature sensor and an air pressure sensor, a support platform 28 is fixedly provided on the inner wall of the bottom end of the cooling rack 2, a buffer pad 29 is embedded in the top of the support platform 28, the surface of the buffer pad 29 is slidably connected to the surface of the test tube 13, the buffer pad 29 and the two anti-slip pads 12 are made of silicone rubber material, and the partition 26, the sealing cover 20, the exhaust pipe 18, the cooling rack 2 and the protective box 1 are all made of insulation material, the buffer pad 29 prevents the test tube 13 from directly colliding with the support platform 28 when inserted into the through hole 3.

[0033] The four cooling components 7 each include a semiconductor refrigerator 71 and a waterproof cover 72. The four semiconductor refrigerators 71 are each embedded in the surface of the cooling rack 2. The four semiconductor refrigerators 71 are evenly distributed in a ring shape. The four waterproof covers 72 are each fixedly arranged on the surface of the cooling rack 2. The four waterproof covers 72 are respectively sleeved on the outside of the four semiconductor refrigerators 71. The surfaces of the four waterproof covers 72 are each embedded with heat sinks 73. When the semiconductor refrigerator 71 is started, the heat absorbing end of the semiconductor refrigerator 71 faces the inside of the cooling rack 2, and the heat dissipating end of the semiconductor refrigerator 71 faces the heat sink 73. When the semiconductor refrigerator 71 is working, it absorbs the heat inside the cooling rack 2 and transfers it to the inside of the waterproof cover 72. The gas inside the waterproof cover 72 heats up, the heat sink 73 is immersed in the water inside the water storage chamber 27, and the heated gas is cooled down through the heat sink 73.

[0034] When in use, first put your finger on the pressing groove 64 and push the rotation-assisting plate 62. The rotation-assisting plate 62 drives the slip ring 61 to rotate, and the slip ring 61 drives the four push plates 63 to rotate. The four push plates 63 push the four booster rods 15 through the inclined surface 65, so that the four booster rods 15 move along the anti-slip groove 14 away from the slip ring 61. The four booster rods 15 drive the four sliders 10 to move, so that the four sliders 10 retract into the four slide grooves 9. Then, insert the test tube 13 into the inside of the through hole 3 until the test tube 13 is supported by the buffer pad 29, and then release it. The arc spring 68 stretches and pushes the transmission block 66 until the transmission block 66 is supported by the arc groove 67. The transmission block 66 drives the push plate 63 to rotate through the slip ring 61, so that the push plate 63 moves away from the booster rod 15. At this time, the push plate 63 cannot block the booster rod 15. The four return springs 11 stretch and push the slider 10 after releasing the pressure groove 64. The four sliders 10 push the anti-skid pads 12 until the four anti-skid pads 12 clamp the top of the test tube 13, thereby fixing the test tubes 13 of different diameters. It has a wide range of applications and is more flexible.

[0035] 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. A small continuous vacuum machine, comprising a protective box (1), characterized in that: The inner wall at the bottom end of the protective box (1) is provided with a cooling rack (2), the surface of the cooling rack (2) is respectively provided with a through hole (3), an annular groove (4) and four through grooves (5), the top of the cooling rack (2) is provided with four guide racks (8), the surfaces of the four guide racks (8) are respectively provided with a slide groove (9), the inner walls of the four slide grooves (9) are slidably connected with a slider (10), the surfaces of the four sliders (10) are respectively provided with an anti-skid pad (12), a test tube (13) is slidably connected between the four anti-skid pads (12), a reset spring (11) is respectively provided between the four sliders (10) and the corresponding slide grooves (9), and a tube removal assembly (6) and a cooling assembly (7) are respectively provided inside the protective box (1).

2. The small continuous vacuum machine according to claim 1, characterized in that: The surfaces of the four guide frames (8) are each provided with an anti-slip groove (14) connected to the slide groove (9), the inner walls of the four anti-slip grooves (14) are each slidably connected with a boosting rod (15), and one end of the four boosting rods (15) is respectively connected to the bottom ends of the four slide blocks (10).

3. The small continuous vacuum machine according to claim 1, characterized in that: The pipe taking assembly (6) comprises a slip ring (61) and four arc-shaped grooves (67). The slip ring (61) is slidably arranged on the inner wall of the annular groove (4). The surface of the slip ring (61) is respectively provided with a rotation-assisting plate (62) and four push plates (63). The surface of the rotation-assisting plate (62) is provided with a pressing groove (64). The four rotation-assisting plates (62) are evenly distributed in an annular shape. One end of the four rotation-assisting plates (62) is provided with an inclined surface (65). The four arc-shaped grooves (67) are all provided on the inner wall of one end of the annular groove (4).

4. The small continuous vacuum machine according to claim 3, characterized in that: The four arc-shaped grooves (67) are evenly distributed in a ring shape, the inner walls of the four arc-shaped grooves (67) are slidably connected with transmission blocks (66), the top ends of the four transmission blocks (66) are connected to one end of the slip ring (61), and arc springs (68) are provided between the four transmission blocks (66) and the corresponding arc-shaped grooves (67).

5. The small continuous vacuum machine according to claim 1, characterized in that: The bottom end of the protection box (1) is provided with a miniature vacuum pump (16) and four supporting legs (17), the exhaust end of the miniature vacuum pump (16) is provided with an exhaust pipe (18), the exhaust pipe (18) is connected to the contact part of the protection box (1), the surface of the protection box (1) is provided with an exhaust port (19) connected to the inside of the exhaust pipe (18), the top end of the protection box (1) is hinged with a sealing cover (20), and the top end of the sealing cover (20) is provided with a handle (21).

6. The small continuous vacuum machine according to claim 5, characterized in that: The inner wall of the top of the protection box (1) is provided with a partition (26), the inner wall of the partition (26) is connected to the surface of the cooling rack (2), the partition (26) separates the interior of the protection box (1) into a water storage chamber (27), the front of the protection box (1) is provided with a water inlet pipe (22), a water outlet pipe (23) and a water level observation window (24), the interior of the water inlet pipe (22) and the interior of the water outlet pipe (23) are both connected to the interior of the water storage chamber (27), the surface of the water inlet pipe (22) and the surface of the water outlet pipe (23) are both provided with electric valves, and a control box (25) is provided on one side of the protection box (1), a single chip microcomputer is provided inside the control box (25), and a switch panel is provided on the surface of the control box (25).

7. The small continuous vacuum machine according to claim 6, characterized in that: The inner wall of the front side of the cooling rack (2) is provided with a temperature sensor and an air pressure sensor respectively, the inner wall of the bottom end of the cooling rack (2) is provided with a support platform (28), the top end of the support platform (28) is embedded with a buffer pad (29), the surface of the buffer pad (29) is slidably connected to the surface of the test tube (13), the buffer pad (29) and the two anti-slip pads (12) are made of silicone rubber material, and the partition (26), the sealing cover (20), the exhaust pipe (18), the cooling rack (2) and the protective box (1) are all made of heat-insulating material.

8. The small continuous vacuum machine according to claim 1, characterized in that: The four cooling components (7) each comprise a semiconductor refrigerator (71) and a waterproof cover (72); the four semiconductor refrigerators (71) are each embedded in the surface of a cooling rack (2); the four semiconductor refrigerators (71) are evenly distributed in a ring shape; the four waterproof covers (72) are each arranged on the surface of the cooling rack (2); the four waterproof covers (72) are respectively sleeved on the outside of the four semiconductor refrigerators (71); and the surfaces of the four waterproof covers (72) are each embedded with heat sinks (73).

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