Freeze dryer

Abstract

The invention is a divisional application, and the application number of the original application is 202411823427.1. The invention relates to the technical field of freeze dryer manufacturing, in particular to a freeze dryer which comprises a freeze dryer box body, a freeze dryer body and a freeze dryer cover. The charging tray is used for placing bottle bodies and is connected into the freezing cavity in a sliding manner; the frame body is arranged above the material tray, and the frame body is connected into the freezing cavity in a sliding mode in the vertical direction; the charging tray locking sliding block is connected to the frame body in a sliding manner; the charging tray locking slide block is used for locking the charging tray which completely enters the freeze dryer box body; the driving device comprises a driving frame and a driver in transmission connection with the driving frame, the driving frame is in transmission connection with the frame body and the material disc locking sliding block, and the driver is used for driving the driving frame to move periodically so as to drive the frame body to move downwards till the bottle plug pressing operation on the lower bottle plug is completed. And the charging tray locking sliding block is driven to move until the charging tray spring bolt moves out of the charging tray locking groove. The device has the advantages of good reliability and low manufacturing cost.

Description

[0001] This application is a divisional application. The application date of the original application is December 12, 2024, the application number is 202411823427.1, and the name of the invention is: An automatic plug-type freeze dryer. Technical Field

[0002] The invention relates to the technical field of freeze dryer manufacturing, in particular to a freeze dryer. Background Art

[0003] In the pharmaceutical process, freeze dryers are used to freeze-dry materials. Drying drugs under low temperature and vacuum environment can keep the original active ingredients and molecular structure of drugs unchanged. In order to reduce the chance of contamination of production process links and products. A plugging device is often built into the freeze dryer. After the freeze drying operation is completed, the materials in the vial are sealed and then removed from the freeze dryer. The principle is that a plug with a notch is placed at the mouth of the vial, so that the bottle cavity is connected to the outside before the plug is pressed. After the freeze drying operation is completed in the freeze dryer, the upper and lower plates of the vial move relatively in the merging direction, and the plug is pressed into the bottle mouth, and the vial is sealed by the plug.

[0004] At present, in order to prevent the operator from taking out the tray containing the materials before performing the plugging operation, a locking device is often provided. The locking device locks the tray before the plugging operation is completed, and the operator cannot remove the tray. After the plugging operation is completed, the locking device is unlocked, and the operator can remove the tray, thereby preventing misoperation.

[0005] The existing locking disk device is often independently set up from the plugging device, using different drivers respectively, and executing them in sequence according to the logic of the control system, which leads to high complexity of the control system. In addition, the cost of electrical components adapted to low-temperature environments is high, which increases the manufacturing cost of the freeze dryer. Summary of the invention

[0006] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a freeze dryer which adopts a driver to drive the plug pressing operation and the unlocking operation of the tray locking slider, has the advantages of simple control, good reliability and low manufacturing cost.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions: A freeze dryer, comprising: A freeze-drying machine housing, wherein a freezing chamber is provided in the freeze-drying machine housing; A material tray for placing bottles, the material tray is slidably connected to the freezing chamber; Also includes: A frame, which is arranged above the material tray and is slidably connected in the freezing chamber along a vertical direction; A tray locking slider is slidably connected to the frame; a tray locking tongue is provided at the lower end of the tray locking slider, and a tray locking groove adapted to the tray locking tongue is provided at the upper end of the tray, for locking the tray completely entering the freeze dryer housing; A driving device, the driving device includes a driving frame and a driver connected to the driving frame, the driving frame is respectively connected to the frame body and the material tray locking slider, the driver is used to drive the driving frame to move periodically to drive the frame body to move downward to complete the plugging operation of the bottle stopper below, and drive the material tray locking slider to move until the material tray locking tongue moves out of the material tray locking groove.

[0008] It can be seen from the above technical solution that the present invention has the following beneficial effects: A freeze dryer in the present application uses one driver to complete the synchronous driving of the plugging operation and the unlocking operation of the tray locking slider, which has the advantages of simple control, good reliability and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of a freeze dryer in an embodiment of the present application; Figure 2 A schematic diagram of the internal components of a freeze dryer corresponding to a freeze dryer housing in an embodiment of the present application; Figure 3 for Figure 2 Exploded diagram of each component; Figure 4 for Figure 3 A partial large picture of area A in the middle circle; Figure 5 for Figure 3 A partial large picture of the area B in the middle circle; Figure 6 for Figure 3 A partial picture of the area C in the middle circle; Figure 7 for Figure 3 The partial enlarged view of the corresponding partition; Figure 8 for Figure 7 A schematic diagram of the central component in a top view; Fig. 9 This is a working state diagram of a freeze dryer in an embodiment of the present application (the drive frame is in a reset state); Fig.10 A working state diagram of a freeze dryer in an embodiment of the present application (performing a plugging operation); Fig.11 A working state diagram of a freeze dryer in an embodiment of the present application (the tray locking slider is unlocked); Fig.12 A working state diagram of a freeze dryer in an embodiment of the present application (the material tray is pushed out by the spring-pressed push rod); Fig.13 A freeze dryer in the embodiment of the present application is Fig.11 Schematic diagram of the position of the cover locker in the working state; Fig.14 A freeze dryer in the embodiment of the present application is Fig.12 Schematic diagram of the position of the cover locker in the working state; In the figure: 1-freeze dryer housing; 10-freezing chamber; 11-tray socket; 121-first transverse slide rail; 122-second transverse slide rail; 13-partition plate; 131-vent; 14-cover plate; 141-third transmission convex portion; 1411-cover plate locking groove; 142-reset spring; 15-cover plate locker; 151-cover plate locking slider; 1511-cover plate locking tongue; 152-second spring; 153-fourth transmission convex portion; 2- tray; 21- bottle rack; 211- tray lock slot; 22- bottle body; 23- bottle plug; 24- guide block; 240- guide slope; 3-pressing device; 31-frame; 311-first transmission convex part; 312-second slider; 4-tray locking slider; 41-tray locking tongue; 411-longitudinal transmission inclined plane; 42-second transmission convex part; 43-guide rod; 431-first spring; 44-limiting plate; 5-driving device; 51-driving frame; 511-first driving chute; 5111-first high section; 5112-low section; 5113-second high section; 512-second driving chute; 5120-limiting edge; 5121-low end; 5122-high end; 513-vertical plate; 514-horizontal plate; 515-first slider; 52-driver; 53-driving convex portion; 6-disc ejector; 61-spring push rod. DETAILED DESCRIPTION

[0010] Combination Figures 1 to 5 A freeze dryer as shown, comprising: A freeze drying machine housing 1, wherein a freezing chamber 10 is provided in the freeze drying machine housing 1; A material tray 2 is provided on the material tray 2, and a bottle rack 21 is provided on the material tray 2. The bottle rack 21 is used to place a bottle body 22. A material tray socket 11 adapted to the material tray 2 is provided on the freeze dryer housing 1, a slide groove is provided in the freezing chamber 10, and a slide rail corresponding to the slide groove is provided at the bottom of the material tray 2. The material tray 2 enters the freeze dryer housing 1, and the material tray 2 is slidably arranged in the material tray socket 11, and the bottle rack 21 is arranged in the freezing chamber 10; Also includes: The plugging device 3 includes a frame 31, which is arranged above the bottle rack 21, and the frame 31 is slidably connected in the freezing chamber 10 along the vertical direction, and a plugging surface corresponding to the bottle plug 23 is provided below the frame 31; The tray locking slider 4 is slidably connected to the frame 31 in the vertical direction; a tray locking tongue 41 is provided at the lower end of the tray locking slider 4, and a longitudinal transmission inclined surface 411 is provided at the front end of the tray locking tongue 41 facing the direction in which the tray 2 enters the tray insertion opening 11, and a tray locking groove 211 adapted to the tray locking tongue 41 is provided at the upper end of the tray 2; The driving device 5 includes a driving frame 51 and a driver 52 connected to the driving frame 51, and the driver 52 is used to drive the driving frame 51 to reciprocate in the horizontal direction; the driving frame 51 is provided with a first driving chute 511 and a second driving chute 512, and the frame body 31 and the material tray locking slider 4 are respectively provided with a first transmission convex portion 311 and a second transmission convex portion 42, and the first transmission convex portion 311 and the second transmission convex portion 42 are respectively arranged in the first driving chute 511 and the second driving chute 512; Combination Fig. 9 As shown, after the material tray 2 is completely inserted into the freeze dryer housing 1, the material tray locking tongue 41 enters the material tray locking groove 211 to lock the material tray 2; Combination Figures 10 to 12 As shown (it should be noted that Figures 10 to 14 In the figure, the arrow on the right side of the reference numeral represents the moving direction of the corresponding component during the state switching process), the driver 52 drives the drive frame 51 to move horizontally, and drives the frame 31 to move downward and then upward through the first driving chute 511 and the first transmission protrusion 311. In the process of the frame 31 moving downward, the plugging operation of the lower bottle stopper 23 is completed. In this process, the second driving chute 512 and the second transmission protrusion 42 drive the material tray locking slider 4 to move upward until the material tray lock tongue 41 moves out of the material tray lock groove 211. In the pharmaceutical process, a freeze dryer is used to freeze-dry the materials. The drugs are dried under low temperature and vacuum environment to keep the original active ingredients and molecular structure of the drugs unchanged. In order to reduce the chance of contamination of the production process and products. A plugging device is often built into the freeze dryer. After the freeze drying operation is completed, the materials in the vial are sealed and then removed from the freeze dryer. The principle is that a stopper with a notch is placed at the mouth of the vial, so that the bottle cavity is connected to the outside before the plug is pressed. After the freeze-drying operation is completed in the freeze dryer, the upper and lower plates of the vial move relatively in the merging direction, pressing the stopper into the bottle mouth, and the stopper seals the vial.

[0011] At present, in order to prevent the operator from taking out the tray containing the materials before performing the plugging operation, a locking device is often provided. The locking device locks the tray before the plugging operation is completed, and the operator cannot remove the tray. After the plugging operation is completed, the locking device is unlocked, and the operator can remove the tray, thereby preventing misoperation.

[0012] The existing locking disk device is often independently set up from the plugging device, using different drivers respectively, and executing them in sequence according to the logic of the control system, which leads to high complexity of the control system. In addition, the cost of electrical components adapted to low-temperature environments is high, which increases the manufacturing cost of the freeze dryer.

[0013] Based on the above structure, the method of use is: the bottle body 22 is placed in the bottle rack 21 of the tray 2, the bottle plug 23 is placed at the bottle mouth, the bottle cavity is kept connected to the outside, and the tray 2 is moved from the tray insertion port 11 into the freeze dryer housing 1, so that the bottle rack 21 is placed in the freezing chamber 10. In this process, the front end of the tray 2 contacts the longitudinal transmission inclined surface 411, so that the tray locking slider 4 is subjected to the longitudinal component force and moves upward until the tray locking tongue 41 is at the upper end of the tray 2, until the tray 2 moves into place, at this time, the tray locking groove 211 is located at the lower end of the tray locking tongue 41, and the tray locking tongue 41 falls into the tray locking groove 211, completing the locking of the tray 2, and the tray 2 cannot be moved outward at this time.

[0014] After the freeze-drying operation is completed, the driver 52 drives the driving frame 51 to move. During this process, the first driving chute 511 drives the first transmission protrusion 311 and the frame 31 to move downward first and then upward. During the downward movement of the frame 31, the plugging operation of the lower bottle stopper 23 is completed. During the upward movement, the plugging surface of the frame 31 is separated from the upper end of the bottle stopper 23 to prevent the bottle stopper 23 from rubbing against the plugging surface when the tray 2 is removed. At the same time, the second driving chute 512 drives the second transmission protrusion 42 and the tray locking slider 4 to move upward until the tray lock tongue 41 moves out of the tray lock groove 211, so as to unlock the tray 2 after the plugging is completed. At this time, the tray 2 can be removed from the freezing chamber 10. Before the tray 2 is placed next time, the driver 52 drives the driving frame 51 to reset. At this time, the plugging surface is higher than the upper end of the bottle stopper 23 that is not pressed down, and the longitudinal position of the tray lock tongue 41 corresponds to the tray lock groove 211.

[0015] Based on the above device, in this embodiment, a driver 52 is used to complete the synchronous driving of the plugging operation and the unlocking operation of the tray locking slider 4, which is simple to control, has the advantages of good reliability and low manufacturing cost. In this embodiment, the first transmission protrusion 311 and the second transmission protrusion 42 are both rolling bearings, and the side of the rolling bearing is in contact with the transmission surface of the chute, which can effectively reduce the resistance of the protrusion moving in the chute and improve reliability.

[0016] Combination Figure 4As shown, in this embodiment, the upper and lower ends of the groove cavity corresponding to the first driving slide groove 511 are provided with limiting walls adapted to the extension track of the first driving slide groove 511 to limit the longitudinal movement of the first transmission protrusion 311, and the first driving slide groove 511 includes a first high section 5111, a low section 5112 and a second high section 5113 sequentially connected in the horizontal direction; Combination Fig. 9 As shown, when the driving frame 51 is reset, the first transmission protrusion 311 is in the first high-position section 5111, and the plugging surface is higher than the upper end of the bottle plug 23 that is not pressed down; Combination Fig.10 As shown, when the driving frame 51 moves to the point where the first transmission protrusion 311 is in the low position section 5112, the frame body 31 moves downward to complete the plugging; Combination Fig.11 As shown, when the driving frame 51 moves to the second high position section 5113 of the first transmission protrusion 311, the frame body 31 moves upward until the plugging surface is separated from the bottle plug 23 to facilitate the horizontal removal of the material tray 2.

[0017] In this embodiment, a limit stop edge 5120 is provided at the lower end of the groove cavity corresponding to the second driving slide groove 512, and the second transmission protrusion 42 longitudinally abuts against the limit stop edge 5120; the second driving slide groove 512 includes a low end 5121 and a high end 5122 connected in the horizontal direction; Combination Fig. 9 As shown, when the driving frame 51 is reset, the second transmission protrusion 42 is located at the low end 5121, and the longitudinal position of the tray lock tongue 41 corresponds to the tray lock groove 211; Combination Fig.11 As shown, after the driving frame 51 moves to the frame body 31 and completes the plugging, the material tray locking tongue 41 is located at the high end 5122 , and the longitudinal position of the material tray locking tongue 41 is higher than the material tray locking groove 211 .

[0018] Combination Figure 3As shown, in this embodiment, the driving frame 51 includes a pair of vertical plates 513 and a horizontal plate 514 connecting the pair of vertical plates 513, the frame body 31 and the material tray 2 entering the freezing chamber 10 are arranged between the pair of vertical plates 513, the first driving chute 511 and the second driving chute 512 are arranged in pairs and are respectively arranged on the inner side of the pair of vertical plates 513, and correspondingly, the first transmission protrusion 311 and the material tray locking slider 4 are also arranged in pairs. To ensure the stability of the driving frame 51 driving the frame body 31 and the material tray locking slider 4 locking the material tray 2. Specifically, the first transmission protrusion 311 is arranged at the central position in the length direction of the horizontal plate 514. The driver 52 is a linear drive cylinder, the cylinder body of the linear drive cylinder is installed on the horizontal plate 514, and the telescopic rod of the linear drive cylinder is connected to the freeze dryer housing 1. A first slider 515 is installed on the outer side of the pair of vertical plates 513, and the first slider 515 is slidably connected to the first transverse slide rail 121 installed in the freeze dryer housing 1. The frame 31 is provided with a second slide block 312 , which is slidably connected to a longitudinal slide rail installed in the freeze dryer housing 1 , so as to ensure the sliding stability of the driving frame 51 and the frame 31 .

[0019] Combination Figure 5 As shown, in this embodiment, a pair of guide rods 43 are provided at the upper end of the tray locking slider 4, and the guide rods 43 are slidably penetrated on the frame 31. A first spring 431 is sleeved on the guide rods 43, and the two ends of the first spring 431 respectively contact the frame 31 and the tray locking slider 4. The guide rods 43 are provided to ensure the stability of the longitudinal movement of the tray locking slider 4. The first spring 431 always applies a downward elastic force to the tray locking slider 4, so that the second transmission protrusion 42 elastically contacts the limit stop edge 5120, so as to ensure that the tray locking slider 4 can move downward in time. In addition, a limit plate 44 is provided at the upper end of the pair of guide rods 43, and the limit plate 44 is located above the frame 31 to prevent the tray locking slider 4 from moving too far downward.

[0020] Further, combined with Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, in this embodiment, a partition 13 is provided in the freezing chamber 10, and the partition 13 divides the freezing chamber 10 into sub-chambers arranged longitudinally, and each sub-chamber is used to receive a material tray 2; The partition plate 13 is provided with a vent 131, and the sub-cavity below the partition plate 13 is connected to the heat exchanger (not shown); The partition 13 is slidably provided with a cover plate 14 corresponding to the vent 131 , and also includes a cover plate driving device. When the material tray 2 in the sub-cavity at the upper end of the partition 13 is moved out, the cover plate driving device is used to drive the cover plate 14 to move to block the vent 131 .

[0021] Based on the above device, the freeze dryer realizes a shared heat exchanger for the sub-cavities on the upper and lower sides of the partition 13 through the vent 131. In other embodiments, a circulating fan can be connected in the sub-cavity above the partition 13 to accelerate the heat exchange efficiency and uniformity in the sub-cavities on the upper and lower sides of the partition 13. When the material tray 2 in the sub-cavity above the partition 13 completes the freeze-drying operation and is removed, the sub-cavity below the partition 13 has not yet completed the freeze-drying operation, which will cause the sub-cavity above the partition 13 to be connected to the external air, which will have a negative impact on the sub-cavity below that has not completed the freeze-drying operation. Therefore, a cover plate 14 is provided to block the vent 131, so that the freeze-drying operation in the sub-cavity below the partition 13 is not affected by the removal of the material tray 2 in the upper sub-cavity. At this time, the pipeline of the circulating fan connected to the upper sub-cavity needs to be cut off using a pipeline solenoid valve. Therefore, based on the above-mentioned device, a freeze dryer in this embodiment can perform freeze drying operations on products with different freeze drying times, and is particularly suitable for freeze drying experiments to determine the freeze drying time of the same product. When in use, the material with relatively short freeze drying time is placed in the sub-chamber above the partition 13, and the material with relatively long freeze drying time is placed in the sub-chamber below the partition 13, and the material tray 2 in the corresponding sub-chamber is moved out in the order of first up and then down.

[0022] Combination Fig. 9 , Figures 11 to 14 As shown, in this embodiment, the cover driving device includes a driving protrusion 53, which is arranged on the vertical plate 513, and a third transmission protrusion 141 corresponding to the driving protrusion 53 is arranged on the cover 14. During the horizontal movement of the driving frame 51 in the direction of performing the plugging operation, the driving protrusion 53 is used to drive the third transmission protrusion 141 to move to the cover 14 to block the vent 131. That is, the cover driving device is integrated into the driving device 5, which has the advantages of simple control and cost saving.

[0023] Because the driving frame 51 needs to move to the reset state before the material tray 2 enters the sub-chamber, during this process, if the cover plate 14 is reset with the driving frame 51, the vent 131 will be opened before the material tray 2 enters the sub-chamber, so that the freezing chamber 10 is connected to the outside as a whole. If the material tray 2 is used to push the cover plate 14 to reset, when the driving cover plate 14 closes the vent 131, the structure of the material tray 2 pushing the cover plate 14 to reset will hinder the movement of the cover plate 14.

[0024] Further, combined with Figure 6 , Figure 8 , Figures 11 to 14As shown, in this embodiment, a cover lock 15 is provided on the partition 13, and when the cover 14 moves to block the vent 131, the cover lock 15 is used to lock the cover 14; an unlocking device corresponding to the cover lock 15 is provided on the material tray 2, and the unlocking device is used to trigger the unlocking of the cover lock 15 during the process of the material tray 2 entering the sub-cavity, and also includes a reset spring 142 connected to the cover 14, and the reset spring 142 applies a thrust to the cover 14 to move in the direction of opening the partition 13, and is used to push the cover 14 to move and reset to open the vent 131 after the unlocking device is unlocked. Based on the above device, when the cover plate 14 moves with the drive frame 51 to block the vent 131, the cover plate locker 15 is used to lock the cover plate 14. After the drive frame 51 is reset, the cover plate 14 does not move with the drive frame 51. After the material tray 2 enters the sub-chamber, the unlocking device is used to trigger the cover plate locker 15 to unlock, and the reset spring 142 is used to push the cover plate 14 to move and reset to the vent 131 to open after the unlocking device is unlocked, thereby ensuring that the vent 131 is opened after the material tray 2 enters the sub-chamber. In this embodiment, the reset spring 142 is a tension spring, and the two ends of the tension spring are respectively connected to the cover plate 14 and the partition 13. Specifically, the cover plate 14 is slidably connected to the second transverse slide rail 122 installed in the freeze dryer housing 1. Specifically, the cover lock 15 includes a cover locking slider 151 and a second spring 152. The cover locking slider 151 is slidably disposed on the partition 13. A cover locking tongue 1511 is disposed at the front end of the cover locking slider 151. Corresponding to the cover locking tongue 1511, a cover locking groove 1411 is disposed on the cover 14. The second spring 152 abuts against an end of the cover locking slider 151 away from the cover locking tongue 1511. The unlocking device includes a guide block 24 disposed at the bottom of the material tray 2, and a guide slope 240 is provided on the guide block 24. A fourth transmission protrusion 153 is provided on the cover plate locking slider 151. When the material tray 2 enters the sub-cavity, the guide slope 240 and the fourth transmission protrusion 153 collide to push the cover plate locking tongue 1511 away from the cover plate locking groove 1411. Based on the above device, when the driving frame 51 moves in the direction of performing the plugging operation, the cover plate 14 is pushed to move. When the cover plate 14 moves to the position corresponding to the cover plate locking groove 1411 and the cover plate locking tongue 1511, the second spring 152 is used to push the cover plate locking slider 151 to move to the cover plate locking tongue 1511 to enter the cover plate locking groove 1411 to lock the cover plate 14. When the material tray 2 enters the sub-cavity, the guide slope 240 and the fourth transmission protrusion 153 collide to push the cover plate locking tongue 1511 away, and the cover plate locking groove 1411 realizes the unlocking of the cover plate 14. In this embodiment, the cover plate lockers 15 are arranged in pairs on both sides of the material tray 2, and the cover plate locking grooves 1411 are arranged on the side of the third transmission protrusion 141. In the width direction of the material tray 2, the cover plate locking grooves 1411 are on the outside of the cover plate locking tongue 1511, and the front end position of the guide slope 240 is on the outside of the rear end position of the guide slope 240, so that when the material tray 2 enters the sub-cavity, the guide slope 240 drives the cover plate locking slider 151 to move inward to pull the cover plate locking tongue 1511 out of the cover plate locking groove 1411. Specifically, the fourth transmission protrusion 153 is a rolling bearing.

[0025] When the drive frame 51 drives the tray locking slider 4 to move to the longitudinal transmission slope 411 and leave the tray locking groove 211, the cover locking slider 151 is limited by the guide block 24 and cannot move to the locking cover 14, and the drive frame 51 needs to perform a reset movement. If the operator is waiting to pull out the tray 2 and the drive frame 51 is reset again, the position of the tray 2 needs to be detected in real time, which increases the complexity of the system and the manufacturing cost.

[0026] In this regard, combined with Fig.12 and Fig.14 As shown, in this embodiment, it also includes a tray ejector 6, which includes a spring-loaded push rod 61. The spring-loaded push rod 61 elastically contacts the tray 2 and applies an elastic force to the tray 2 to move it out of the freezing chamber 10. When the tray locking slider 4 moves to the longitudinal transmission inclined surface 411 and leaves the tray locking groove 211, the tray ejector 6 is used to push the tray 2 to the cover plate locking slider 151 and move it in the direction of locking the cover plate 14 to reset it.

[0027] Based on the above device, when the longitudinal transmission inclined plane 411 leaves the tray lock slot 211, the tray 2 can be automatically ejected by the tray ejector 6, and the ejection stroke makes the unlocking device separate from the cover plate locker 15, and the cover plate locking slider 151 can be reset to automatically lock the cover plate 14, after which the drive frame 51 can be reset, and the setting of its control system only requires the drive frame 51 to move to the bottom in the direction of executing the plugging, and then wait for a preset time before resetting. Then, the feedback system for detecting the position of the tray 2 is not necessary, so it has the advantages of simple control and cost saving.

[0028] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A freeze dryer, comprising: A freeze drying machine housing (1), wherein a freezing chamber (10) is provided in the freeze drying machine housing (1); A material tray (2) for placing the bottle bodies (22), the material tray (2) being slidably connected to the freezing chamber (10); It is characterized by further comprising: A frame (31), the frame (31) being arranged above the material tray (2), and the frame (31) being slidably connected in the freezing chamber (10) along a vertical direction; A material tray locking slider (4) is slidably connected to the frame (31); a material tray locking tongue (41) is provided at the lower end of the material tray locking slider (4), and a material tray locking groove (211) adapted to the material tray locking tongue (41) is provided at the upper end of the material tray (2) for locking the material tray (2) completely inserted into the freeze dryer housing (1); A driving device (5), the driving device (5) comprising a driving frame (51) and a driver (52) drivingly connected to the driving frame (51), the driving frame (51) being drivingly connected to the frame body (31) and the material tray locking slider (4) respectively, the driver (52) being used to drive the driving frame (51) to move periodically so as to drive the frame body (31) to move downwards until a plugging operation on a bottle stopper (23) below is completed, and to drive the material tray locking slider (4) to move until the material tray locking tongue (41) moves out of the material tray locking groove (211).

2. A freeze dryer according to claim 1, characterized in that: A longitudinal transmission structure is provided between the material tray locking tongue (41) and the material tray (2), and is used to lift the material tray locking tongue (41) when the material tray (2) enters the freezing chamber (10), so that the material tray locking tongue (41) can move to above the material tray locking groove (211).

3. A freeze dryer according to claim 1, characterized in that: The longitudinal transmission structure comprises a longitudinal transmission inclined surface (411) arranged at the front end of the material tray locking tongue (41) facing the material tray (2) in the direction of entering the freezing chamber (10).

4. A freeze dryer according to claim 1, characterized in that: The drive frame (51) is provided with a first drive slot (511), the frame body (31) is provided with a first transmission protrusion (311), and the first transmission protrusion (311) is arranged in the first drive slot (511); upper and lower ends of the slot cavity corresponding to the first drive slot (511) are provided with limit walls adapted to the extension track of the first drive slot (511), and the first drive slot (511) includes a first high section (5111) and a low section (5112) sequentially connected in a horizontal direction; When the driving frame (51) is reset, the first transmission protrusion (311) is in the first high position section (5111), and the plugging surface is higher than the upper end of the bottle plug (23) that is not pressed down; When the driving frame (51) moves to the point where the first transmission protrusion (311) is in the low position section (5112), the frame body (31) moves downward to complete the plugging.

5. A freeze dryer according to claim 1, characterized in that: The drive frame (51) is provided with a second drive slide groove (512), the tray locking slide block (4) is provided with a second transmission protrusion (42), and the second transmission protrusion (42) is arranged in the second drive slide groove (512); A limit stop edge (5120) is provided at the lower end of the groove cavity corresponding to the second driving slide groove (512), and the second transmission protrusion (42) longitudinally abuts against the limit stop edge (5120); the second driving slide groove (512) comprises a low end (5121) and a high end (5122) connected in the horizontal direction; When the driving frame (51) is reset, the second transmission protrusion (42) is located at the low end (5121), and the longitudinal position of the material tray locking tongue (41) corresponds to the material tray locking groove (211); After the driving frame (51) moves to the frame body (31) to complete the plugging, the material tray locking tongue (41) is located at the high end (5122), and the longitudinal position of the material tray locking tongue (41) is higher than the material tray locking groove (211).

6. A freeze dryer according to claim 1, characterized in that: The driving frame (51) comprises a pair of vertical plates (513) and a horizontal plate (514) connecting the pair of vertical plates (513); the frame body (31) and the material tray (2) entering the freezing chamber (10) are arranged between the pair of vertical plates (513); the first driving chute (511) and the second driving chute (512) are arranged in pairs and are respectively arranged on the pair of vertical plates (513); correspondingly, the first transmission protrusion (311) and the material tray locking slider (4) are also arranged in pairs.

7. A freeze dryer according to claim 1, characterized in that: A pair of guide rods (43) are provided at the upper end of the tray locking slider (4), the guide rods (43) are slidably inserted into the frame (31), a first spring (431) is sleeved on the guide rods (43), and two ends of the first spring (431) respectively contact the frame (31) and the tray locking slider (4).

8. A freeze dryer according to claim 7, characterized in that: A limiting plate (44) is provided at the upper ends of the pair of guide rods (43), and the limiting plate (44) is located above the frame body (31).

Images