Freeze-drying equipment capable of negative pressure sterilization and working method thereof

Abstract

The present invention discloses a freeze-drying device capable of negative pressure sterilization and a working method, comprising: a freeze-drying chamber, a mounting assembly, and a food rack. A fixing seat is provided at the upper end of the food rack, and a mounting seat that cooperates with the fixing seat is provided on the inner wall of the freeze-drying chamber. A guide block is inserted between the sealing plate and the driving plate, and the guide block is used to push the driving plate to move in the horizontal groove and the vertical groove, and to keep the traction member pulling the sealing plate to seal the disinfection hole. The freeze-drying device capable of negative pressure sterilization uses automation to send the food on the food rack into the freeze-drying chamber for processing, and then limits the position of the food rack through a limiting assembly, so that the food rack can be limited to a specified position, which is conducive to the rapid processing of the food. At the same time, the mounting assembly on the food rack can guide the disinfection hole in the freeze-drying chamber to be sealed through the guide block on the food rack, thereby realizing automated operation, reducing the labor intensity of the staff, and saving the time for disinfection of the freeze-drying chamber in the later stage.

Description

Technical Field

[0001] The present invention relates to freeze-drying technology, in particular to a freeze-drying device capable of negative pressure sterilization. Background Art

[0002] The working principle of vacuum freeze dryer is to refrigerate the cold trap (also known as water trap) through a refrigeration system mainly composed of a compressor, a condenser and an expansion valve, so that the temperature of the cold trap reaches -45℃ to -80℃. The vacuum pump then evacuates the cold trap at a low temperature, so that the water molecules in the frozen material in the drying chamber sublime and vaporize, and then transfer and freeze to the metal surface inside the cold trap, thereby completing the freeze-drying of the material.

[0003] Freeze dryers used in the traditional freeze-drying industry require sterilization to facilitate subsequent freezing operations. Currently, manual spraying is the primary method, requiring access to the freeze dryer, which is dangerous and time-consuming, impacting the next freeze-drying cycle. Furthermore, the positioning of food racks is difficult to control, hindering the freeze-drying process of food stored on multiple racks. Summary of the Invention

[0004] In order to solve the defects of the above-mentioned prior art, the present invention proposes a freeze-drying device capable of negative pressure sterilization.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A freeze-drying device capable of negative pressure sterilization, comprising:

[0007] A freeze-drying bin is hollowed out to form a freeze-drying chamber, one end of the freeze-drying chamber is opened to form an input port, a bin door is provided at the input port, a steam transmission pipeline is provided outside the freeze-drying chamber, the steam transmission pipeline extends into the freeze-drying chamber, a first pipeline is provided on the freeze-drying bin, a vacuum pump is provided on the first pipeline, a heating pipe is further provided on the freeze-drying bin, the heating pipe extends into the interior of the freeze-drying chamber, a cooler is provided inside the freeze-drying chamber, and the cooler is provided at the lower end of the steam transmission pipeline.

[0008] Multiple mounting components are arranged on the wall of the freeze-drying chamber, and the mounting components are symmetrically arranged. A mounting part is provided in the mounting component, and the mounting part consists of a mounting rod, a vertical plate and a horizontal plate. The vertical plate is arranged on the mounting rod, and the horizontal plate is arranged on the vertical plate. The horizontal plate is arranged perpendicular to the vertical plate. An extension portion is provided on the horizontal plate, and an extension hole is formed inside the extension portion. A disinfection hole is provided in the middle of the horizontal plate, and the disinfection hole is connected to the extension hole. A sealing plate is provided at the lower end of the horizontal plate, and sliding parts are provided at both ends of the sealing plate. A strip hole is provided on the sliding part, and a strip hole is provided on the lower end surface of the horizontal plate. A sliding groove that cooperates with the sliding part, the vertical plate is provided with a groove, a first spring is provided in the sliding groove, one end of the first spring contacts the inner wall of the groove, and the other end contacts the sealing plate, one end of the sealing plate is provided with a traction member, a guide rod is provided in the groove, the vertical plate is provided with a transverse groove and a vertical groove, the transverse groove is perpendicular to the vertical groove, a driving plate is provided on the vertical plate, one end of the driving plate is provided with a first rod body, and the other end is provided with a second rod body, the first rod body is placed in the vertical groove, and the second rod body is placed in the transverse groove, one end of the traction member is connected to the sealing plate, and the other end is connected to the first rod body,

[0009] And a food rack placed in the freeze-drying chamber, wherein the upper end of the food rack is provided with a fixed seat, the fixed seat is provided with a symmetrical fixed plate, the middle of the fixed plate is provided with a symmetrical roller, the inner wall of the freeze-drying chamber is provided with a mounting seat, the lower end of the mounting seat is provided with a blocking portion, the lower end of the blocking portion is provided with a bearing plate cooperating with the roller, the roller is arranged on the bearing plate, the blocking portion is arranged between the rollers, the food rack is provided with a guide block, the guide block is arranged on the outer wall of the food rack, the guide block is inserted between the sealing plate and the driving plate, the guide block is used to push the driving plate to move in the horizontal groove and the vertical groove, and keep the traction member pulling the sealing plate to seal the disinfection hole.

[0010] In the present invention, a second spring is provided in the vertical groove, a third spring is provided in the transverse groove, the second spring is in contact with the first rod, and the third spring is in contact with the second rod.

[0011] In the present invention, the disinfection hole is arranged at an angle. When the first rod body of the driving plate is at the upper end of the vertical groove and the second rod body is at one end close to the vertical groove, the driving plate is kept at the lower end of the disinfection hole, and the middle of the driving plate is located in the middle of the disinfection hole.

[0012] In the present invention, the guide block is provided with a protrusion, the protrusion is provided with an arc head, the lower end of the protrusion is provided with a first plane, and the guide block is further provided with an inclined plane and a second plane, the inclined plane connecting the first plane and the second plane.

[0013] In the present invention, a support plate is provided on the outer wall of the freeze-drying chamber, a motor is provided on the support plate, a rotating shaft is provided on the mounting rod, the rotating shaft is connected to the motor, a rotating wheel is provided at one end of the rotating shaft, and a rotating part is provided at the other end, the rotating part is located inside the freeze-drying chamber, the rotating wheel is located outside the freeze-drying chamber, and the rotating wheels are connected to each other by a belt.

[0014] In the present invention, the rotating member is provided with symmetrically arranged pushing blocks.

[0015] In the present invention, a rotating shaft is provided on the mounting rod, a gear is provided on the rotating shaft, a rack is provided on one side of the food rack to cooperate with the gear, the gear is provided with a first tooth, and the rack is provided with a second tooth to cooperate with the first tooth.

[0016] In the present invention, a symmetrical limiting assembly is provided on the mounting rod, and a limiting plate, a pressure member and a limiting member are provided in the limiting assembly. The limiting plate is connected to the mounting rod, and the pressure member is composed of a cover body and a pressure rod. The interior of the cover body is hollowed out to form a limiting chamber. A through hole is provided on the limiting plate for the pressure rod to pass through. The pressure rod is placed on the limiting member, and a fourth spring is sleeved on the pressure rod. The upper end of the fourth spring is in contact with the cover body, and the lower end is placed on the limiting plate. A compression area is formed between the cover body and the limiting plate.

[0017] In the present invention, the limiting member consists of a mounting section, a connecting section, a first inclined section, a horizontal section and a second inclined section. The pressure rod is placed on the horizontal section, and the second inclined section is placed between the first teeth.

[0018] A method for operating a freeze-drying device capable of negative pressure sterilization, using the above-mentioned freeze-drying device, comprises the following steps:

[0019] Step 1: Place the food to be processed on the food rack, start the motor, and keep the motor rotating clockwise to drive the belt to rotate, and the rotating part to rotate. The push block applies pressure to the limit assembly away from the input port to keep the fourth spring compressed;

[0020] Step 2: The pressure rod applies pressure to the horizontal section on the limiter to keep the second inclined section separated from between the first teeth;

[0021] Step 3: Place the food rack on the mounting base in the freeze-drying chamber and place it in the freeze-drying chamber through the coordination of the rack and gear on the food rack;

[0022] Step 4: The guide block on the food rack pushes the driving plate to move in the vertical groove and the horizontal groove, and the driving plate drives the traction member to pull the sealing plate to seal the disinfection hole;

[0023] Step 5: Close the door and start the freeze-drying equipment.

[0024] The freeze-drying equipment capable of negative pressure sterilization according to the present invention has the following beneficial effects: The equipment automatically delivers food from a food rack into a freeze-drying chamber for processing. A limiting assembly then restricts the position of the food rack, allowing the rack to be held in a designated position, facilitating rapid food processing. Furthermore, the mounting assembly on the food rack can guide guide blocks located on the rack to seal the disinfection holes within the freeze-drying chamber, achieving automated operation, reducing staff workload and saving time for subsequent freeze-drying chamber disinfection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the freeze-drying equipment capable of negative pressure sterilization according to the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0027] Figure 3 for Figure 2 The main view;

[0028] Figure 4 FIG is a schematic structural diagram of the food rack, mounting assembly and limiting assembly in the present invention;

[0029] Figure 5 for Figure 4 Schematic diagram of food shelf structure;

[0030] Figure 6 for Figure 5 Schematic diagram of the boot block structure in ;

[0031] Figure 7 for Figure 2 Schematic diagram of the gas pipeline and cooler structure;

[0032] Figure 8 for Figure 4 Schematic diagram of the installation components and boot block structure in;

[0033] Figure 9 for Figure 8 The main view;

[0034] Figure 10 for Figure 9 A local enlarged view of point A in FIG;

[0035] Figure 11 for Figure 10 Schematic diagram of the sealing plate, traction member and drive plate structure;

[0036] Figure 12Schematic diagram of the installation state of the rotating member, rotating shaft, rotating wheel mounting assembly and limiting assembly structure in the present invention;

[0037] Figure 13 for Figure 12 Schematic diagram of the structure of the rotating part, rack and limit assembly;

[0038] Figure 14 for Figure 13 Schematic diagram of the limiting plate, pressure member and fourth spring structure.

[0039] In the figure: freeze drying chamber 1, mounting assembly 2, food rack 3, disinfection hole 4, positioning hole 5, guide block 6, undercut 7, second spring 8, third spring 9, first spring 10, sealing plate 11, chamber door 12, steam transmission pipeline 13, second pipeline 14, third pipeline 15, small hole 16, first pipeline 17, vacuum pump 18, heating pipe 19, cooler 20, mounting member 21, mounting rod 22, vertical plate 23, horizontal plate 24, extension portion 25, extension hole 26, sliding portion 27, strip hole 28, sliding groove 29, groove 30, traction member 31, guide rod 32, first rod body 33, horizontal groove 34, vertical groove 35, drive plate 36, second rod body 37, fixing seat 38, fixing plate 39, roller Wheel 40, mounting seat 41, blocking portion 42, bearing plate 43, protrusion 44, arc head 45, first plane 46, inclined surface 47, second plane 48, support plate 49, motor 50, rotating shaft 51, rotating wheel 52, rotating member 53, belt 54, pushing block 55, limiting assembly 56, pressure member 57, fourth spring 58, rotating shaft 59, gear 60, rack 61, first teeth 62, second teeth 63, limiting plate 64, limiting member 65, cover body 66, pressure rod 67, limiting chamber 68, through hole 69, compression area 70, mounting section 71, connecting section 72, first inclined section 73, horizontal section 74, second inclined section 75, gap 76, disinfection tube 77, elastic arm 78. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0041] like Figures 1 to 14 As shown, the freeze-drying apparatus capable of negative pressure sterilization of the present invention comprises a freeze-drying chamber 1, a mounting assembly 2, and a food rack 3. The mounting assembly 2 is used to maintain the position of the food rack 3 and, through the food rack 3, to seal the disinfection aperture 4 within the freeze-drying chamber 1, thereby preventing food from being sterilized during processing. Furthermore, when the food rack 3 is removed from the freeze-drying chamber, the guide block 6 on the food rack 3 is prevented from pushing the drive plate 36. This allows the drive plate 36 to return to its original position due to the reduced elastic force of the second spring 8 and the third spring 9. Furthermore, the first spring 10 pushes the sealing plate 11 back to its original position, thereby opening the disinfection aperture 4.

[0042] The interior of the freeze-drying bin 1 is hollowed out to form a freeze-drying chamber, one end of which is open to form an input port, at which a bin door 12 is provided. The bin door 12 can be closed by a sliding rail type closing door in the prior art.

[0043] A steam pipeline 13 is provided outside the freeze-drying chamber and extends into the chamber. A second pipeline 14 and a third pipeline 15 are provided on the steam pipeline 13. The third pipeline 15 is connected to the second pipeline 14 and is provided with a small hole 16. A first pipeline 17 is provided in the freeze-drying chamber 1, and a vacuum pump 18 is provided on the first pipeline 17. A heating pipe 19 is also provided in the freeze-drying chamber 1, extending into the interior of the freeze-drying chamber. A cooler 20 is provided inside the freeze-drying chamber, located at the lower end of the steam pipeline 13.

[0044] The mounting assembly 2 is arranged on the inner wall of the freeze-drying chamber. The mounting assembly 2 is provided in multiple places, and the mounting assembly 2 is symmetrically arranged on the inner wall of the freeze-drying chamber. A mounting part 21 is provided in the mounting assembly 2, and the mounting part 21 is composed of a mounting rod 22, a vertical plate 23 and a transverse plate 24. The vertical plate 23 is arranged on the mounting rod 22, and the transverse plate 24 is arranged on the vertical plate 23. The transverse plate 24 is arranged perpendicular to the vertical plate 23. An extension portion 25 is provided on the transverse plate 24, and an extension hole 26 is formed inside the extension portion 25. A disinfection hole 4 is provided in the middle of the transverse plate 24, and the disinfection hole 4 is connected to the extension hole 26. A disinfection tube 77 is provided on the extension portion 25, and the disinfection tube 77 extends to the outside of the freeze-drying chamber 1.

[0045] A sealing plate 11 is provided at the lower end of the transverse plate 24. Sliding portions 27 are provided at both ends of the sealing plate 11, each with a strip-shaped hole 28. Bolts can be inserted into the strip-shaped hole 28 on the transverse plate 24 to restrict the position of the sealing plate 11 and prevent it from falling. A sliding groove 29 is provided on the lower end surface of the transverse plate 24, which cooperates with the sliding portion 27. A groove 30 is provided on the vertical plate 23, which communicates with the sliding groove 29. A first spring 10 is provided within the sliding groove 29, with one end of the first spring 10 contacting the inner wall of the groove 30 and the other end contacting the sealing plate 11. A traction member 31 is provided at one end of the sealing plate 11, and a guide rod 32 is provided within the groove 30. The traction member 31 is wound around the guide rod 32 and connected to the first rod body 33.

[0046] The vertical plate 23 is provided with a transverse slot 34 and a vertical slot 35, with the transverse slot 34 and the vertical slot 35 being arranged perpendicularly. A drive plate 36 is provided on the vertical plate 23. A first rod 33 is provided at one end of the drive plate 36, and a second rod 37 is provided at the other end. The first rod 33 is positioned within the vertical slot 35, and the second rod 37 is positioned within the transverse slot 34. One end of the pulling member 31 is connected to the sealing plate 11, and the other end is connected to the first rod 33.

[0047] A second spring 8 is provided in the vertical slot 35, and a third spring 9 is provided in the horizontal slot 34. The second spring 8 contacts the first rod 33, and the third spring 9 contacts the second rod 37. Figure 10 As shown, the second spring 8 is arranged at the lower end of the first rod 33, and the third spring 9 is arranged on the left side of the second rod 37. The second spring 8 pushes the first rod 33 on the drive plate 36, and the third spring 9 pushes the second rod 37 on the drive plate 36.

[0048] When the guide block 6 is not inserted between the sealing plate 11 and the driving plate 36, the first spring 10, the second spring 8 and the third spring 9 at this moment are all in a natural state. Only after the guide block 6 is inserted, the first spring 10, the second spring 8 and the third spring 9 are in a compressed state.

[0049] The disinfection hole 4 is arranged at an angle. When the first rod body 33 of the driving plate 36 is at the upper end of the vertical groove 35 and the second rod body 37 is at one end close to the vertical groove 35, the driving plate 36 is kept at the lower end of the disinfection hole 4, and the middle of the driving plate 36 is located in the middle of the disinfection hole 4.

[0050] And when the guide block 6 is not inserted between the drive plate 36 and the sealing plate 11, the drive plate 36 is in an inclined setting, which can disperse and guide the disinfection spray sprayed from the inclined disinfection hole 4, thereby improving the disinfection efficiency inside the freeze-drying chamber.

[0051] The food rack 3 is placed in the freeze-drying chamber. A fixing base 38 is located at the top of the food rack 3. A symmetrical fixing plate 39 is mounted on the fixing base 38. A symmetrical roller 40 is positioned in the center of the fixing plate 39. A mounting base 41 is located on the inner wall of the freeze-drying chamber. A blocking portion 42 is located at the bottom of the mounting base 41. A supporting plate 43 is located below the blocking portion 42, which engages with the roller 40. The roller 40 is mounted on the supporting plate 43, and the blocking portion 42 is positioned between the rollers 40. When the food rack 3 is placed in the freeze-drying chamber, the rollers 40 slide directly into the freeze-drying chamber, which not only improves work efficiency but also enables automated operation.

[0052] A guide block 6 is provided on the food rack 3. The guide block 6 is arranged on the outer wall of the food rack 3. The guide block 6 is inserted between the sealing plate 11 and the driving plate 36. The guide block 6 is used to push the driving plate 36 to move in the horizontal groove 34 and the vertical groove 35, keeping the traction member 31 pulling the sealing plate 11 to seal the disinfection hole 4.

[0053] Since the limiting assembly 56 limits the position of the food rack 3 , the guide block 6 can be kept able to limit the position of the driving plate 36 , thereby enhancing the sealing effect of the sealing plate 11 on the disinfection hole 4 .

[0054] The guide block 6 is provided with a raised portion 44, which has an arc-shaped head 45. The lower end of the raised portion 44 is provided with a first flat surface 46. The guide block 6 is also provided with an inclined surface 47 and a second flat surface 48, which connects the first flat surface 46 and the second flat surface 48. The raised portion 44 pushes the upper end of the drive plate 36. Since the drive plate 36 is originally in a slightly inclined state, when the raised portion 44 on the guide block 6 pushes the drive plate 36, the drive plate 36 moves downward, compressing the second spring 8 and the third spring 9.

[0055] A support plate 49 is provided on the outer wall of the freeze-drying chamber 1. A motor 50 is mounted on the support plate 49. A rotating shaft 51 is provided on the mounting rod 22 and is connected to the motor 50. A rotating wheel 52 is provided at one end of the rotating shaft 51, and a rotating member 53 is provided at the other end. The rotating member 53 is located inside the freeze-drying chamber 1, while the rotating wheels 52 are located outside the freeze-drying chamber 1. The rotating wheels 52 are connected to each other by a belt 54. When the motor 50 drives one of the rotating wheels 52 to rotate, the rotating wheel 52 at that location drives the belt 54 to rotate, thereby driving the other rotating wheels 52 to rotate.

[0056] Since the rotating member 53 and the rotating wheel 52 are connected by the rotating shaft 51, the rotating member 53 and the rotating wheel 52 rotate in the same direction. In addition, the rotating member 53 is provided with a symmetrically arranged push block 55, which is used to apply pressure to the pressure member 57 in the limit assembly 56 to keep the fourth spring 58 compressed.

[0057] A rotating shaft 59 is provided on the mounting rod 22, and a gear 60 is provided on the rotating shaft 59. A rack 61 is provided on one side of the food rack 3 to cooperate with the gear 60. The gear 60 has a first tooth 62, and the rack 61 has a second tooth 63 to cooperate with the first tooth 62.

[0058] A symmetrical stop assembly 56 is mounted on the mounting rod 22. The stop assembly 56 includes a stop plate 64, a pressure member 57, and a stop member 65. The stop plate 64 is connected to the mounting rod 22. The pressure member 57 comprises a housing 66 and a pressure rod 67. The housing 66 is hollowed out to form a stop chamber 68. The stop plate 64 is provided with a through hole 69 through which the pressure rod 67 passes. The pressure rod 67 is positioned on the stop member 65 and is sleeved with a fourth spring 58. The upper end of the fourth spring 58 contacts the housing 66, while the lower end rests on the stop plate 64. A compression region 70 is formed between the housing 66 and the stop plate 64.

[0059] An elastic arm 78 is provided at the lower end of the cover body 66 , an undercut 7 is provided at the lower end of the elastic arm 78 , and a positioning hole 5 for inserting the undercut 7 is provided on the limiting plate 64 .

[0060] The limiting member 65 is composed of a mounting section 71, a connecting section 72, a first inclined section 73, a horizontal section 74, and a second inclined section 75. The first inclined section 73 and the second inclined section 75 are both tilted downward. The pressure rod 67 is placed on the horizontal section 74, and the second inclined section 75 is placed between the first teeth 62 and the first teeth 62. When the pressure rod 67 applies pressure to the horizontal section 74, it can keep the horizontal section 74 and drive the second inclined section 75 to move downward, so that the second inclined section 75 is separated from the gap 76 between the first teeth 62 and the first teeth 62, and no longer restricts the upward rotation of the gear 60. The limiting members 65 are provided at both ends of the guide gear 60, so no matter which direction the gear 60 rotates upward, it will be restricted by the limiting members 65.

[0061] When the food rack 3 needs to be put in, the motor 50 needs to be started first, so that the motor 50 drives the belt 54 to rotate, and the belt 54 drives the other rotating parts 53 to rotate, so that the pushing block 55 applies pressure to the pressure member 57, compressing the fourth spring 58, and the pressure rod 67 presses down the horizontal section 74, keeping the second inclined section 75 moving downward together, so that the gear 60 can rotate in one direction, but cannot rotate in the other direction.

[0062] like Figure 12 As shown, the limit assembly 56 in the M direction is close to the input port, while the limit assembly 56 in the N direction is far away from the input port. Figure 1 When the middle motor 50 is started, it drives the belt 54 to rotate clockwise, which drives the pressure member 57 in the limiting assembly 56 in the N direction to press downward, thereby keeping the second inclined section 75 in this direction moving downward and breaking away from contact with the first tooth 62.

[0063] like Figure 12 As shown, when the food rack 3 is inserted, the rack 61 pushes the gear 60 to rotate clockwise, so that the second inclined section 75 in the M direction is pushed downward by the first tooth 62 and does not block the rotation of the gear 60. The second inclined section 75 in the N direction does not contact the tooth at this time, so it does not block the rotation of the gear 60.

[0064] A method for operating a freeze-drying device capable of negative pressure sterilization, using the above-mentioned freeze-drying device, comprises the following steps:

[0065] Step 1: Place the food to be processed on the food rack 3, start the motor 50, keep the motor 50 rotating clockwise, drive the belt 54 to rotate, rotate the rotating member 53, and apply pressure to the limit assembly 56 away from the input port through the push block 55 to keep the fourth spring 58 compressed.

[0066] Step 2: The pressure rod 67 applies pressure to the horizontal section 74 on the limiting member 65 to keep the second inclined section 75 disengaged from between the first teeth 62 .

[0067] Step 3: Place the food rack 3 on the mounting base 41 in the freeze-drying chamber, and place the food rack 3 into the freeze-drying chamber through the cooperation of the rack 61 and the gear 60 on the food rack 3 .

[0068] Step 4: The guide block 6 on the food rack 3 pushes the driving plate 36 to move in the vertical slot 35 and the horizontal slot 34 , and the driving plate 36 drives the traction member 31 to pull the sealing plate 11 to seal the disinfection hole 4 .

[0069] Step 5, close the door 12 and start the freeze-drying equipment. Start the cooler 20, lower the temperature to below 0°C, then start the vacuum pump 18, reduce the pressure to about 80pa, and turn off the cooler 20 and the vacuum pump 18. Start the heating device to heat the heating tube 19, and turn off the heating device after 12 hours. Open the valve to let in water vapor, and the water vapor enters from the steam pipeline 13. After 2 hours, you can open the door 12 and take out the food rack 3. When taking out the food rack 3, it is necessary to start the motor 50 counterclockwise so that the pressure member 57 in the M direction applies pressure to the limit member 65, so that the second inclined section 75 here will not block the rotation of the gear 60.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A freeze-drying device capable of negative pressure sterilization, characterized in that: include: A freeze-drying bin is hollowed out to form a freeze-drying chamber, one end of the freeze-drying chamber is opened to form an input port, a bin door is provided at the input port, a steam transmission pipeline is provided outside the freeze-drying chamber, the steam transmission pipeline extends into the freeze-drying chamber, a first pipeline is provided on the freeze-drying bin, a vacuum pump is provided on the first pipeline, a heating pipe is further provided on the freeze-drying bin, the heating pipe extends into the interior of the freeze-drying chamber, a cooler is provided inside the freeze-drying chamber, and the cooler is provided at the lower end of the steam transmission pipeline. Multiple mounting components are arranged on the wall of the freeze-drying chamber, and the mounting components are symmetrically arranged. A mounting part is provided in the mounting component, and the mounting part consists of a mounting rod, a vertical plate and a horizontal plate. The vertical plate is arranged on the mounting rod, and the horizontal plate is arranged on the vertical plate. The horizontal plate is arranged perpendicular to the vertical plate. An extension portion is provided on the horizontal plate, and an extension hole is formed inside the extension portion. A disinfection hole is provided in the middle of the horizontal plate, and the disinfection hole is connected to the extension hole. A sealing plate is provided at the lower end of the horizontal plate, and sliding parts are provided at both ends of the sealing plate. A strip hole is provided on the sliding part, and a strip hole is provided on the lower end surface of the horizontal plate. A sliding groove that cooperates with the sliding part, the vertical plate is provided with a groove, a first spring is provided in the sliding groove, one end of the first spring contacts the inner wall of the groove, and the other end contacts the sealing plate, one end of the sealing plate is provided with a traction member, a guide rod is provided in the groove, the vertical plate is provided with a transverse groove and a vertical groove, the transverse groove is perpendicular to the vertical groove, a driving plate is provided on the vertical plate, one end of the driving plate is provided with a first rod body, and the other end is provided with a second rod body, the first rod body is placed in the vertical groove, and the second rod body is placed in the transverse groove, one end of the traction member is connected to the sealing plate, and the other end is connected to the first rod body, And a food rack placed in the freeze-drying chamber, wherein the upper end of the food rack is provided with a fixed seat, the fixed seat is provided with a symmetrical fixed plate, the middle of the fixed plate is provided with a symmetrical roller, the inner wall of the freeze-drying chamber is provided with a mounting seat, the lower end of the mounting seat is provided with a blocking portion, the lower end of the blocking portion is provided with a bearing plate cooperating with the roller, the roller is arranged on the bearing plate, the blocking portion is arranged between the rollers, the food rack is provided with a guide block, the guide block is arranged on the outer wall of the food rack, the guide block is inserted between the sealing plate and the driving plate, the guide block is used to push the driving plate to move in the horizontal groove and the vertical groove, and keep the traction member pulling the sealing plate to seal the disinfection hole.

2. The freeze-drying equipment capable of negative pressure sterilization according to claim 1, characterized in that: A second spring is provided in the vertical groove, a third spring is provided in the transverse groove, the second spring is in contact with the first rod body, and the third spring is in contact with the second rod body.

3. The freeze-drying equipment capable of negative pressure sterilization according to claim 1, characterized in that: The disinfection hole is arranged at an angle. When the first rod body of the driving plate is at the upper end of the vertical groove and the second rod body is at one end close to the vertical groove, the driving plate is kept at the lower end of the disinfection hole, and the middle of the driving plate is located in the middle of the disinfection hole.

4. The freeze-drying equipment capable of negative pressure sterilization according to claim 1, characterized in that: The guide block is provided with a protrusion, the protrusion is provided with an arc-shaped head, the lower end of the protrusion is provided with a first plane, and the guide block is also provided with an inclined plane and a second plane, and the inclined plane connects the first plane and the second plane.

5. The freeze-drying equipment capable of negative pressure sterilization according to claim 1, characterized in that: A support plate is provided on the outer wall of the freeze-drying chamber, a motor is provided on the support plate, a rotating shaft is provided on the mounting rod, the rotating shaft is connected to the motor, a rotating wheel is provided at one end of the rotating shaft, and a rotating part is provided at the other end, the rotating part is located inside the freeze-drying chamber, the rotating wheel is located outside the freeze-drying chamber, and the rotating wheels are connected to each other by a belt.

6. The freeze-drying equipment capable of negative pressure sterilization according to claim 5, characterized in that: The rotating member is provided with symmetrically arranged pushing blocks.

7. The freeze-drying equipment capable of negative pressure sterilization according to claim 6, characterized in that: The mounting rod is provided with a rotating shaft, the rotating shaft is provided with a gear, one side of the food rack is provided with a rack matched with the gear, the gear is provided with a first tooth, and the rack is provided with a second tooth matched with the first tooth.

8. The freeze-drying equipment capable of negative pressure sterilization according to claim 7, characterized in that: A symmetrical limiting assembly is provided on the mounting rod, and a limiting plate, a pressure member and a limiting member are provided in the limiting assembly. The limiting plate is connected to the mounting rod, and the pressure member is composed of a cover body and a pressure rod. The interior of the cover body is hollowed out to form a limiting chamber. A through hole is provided on the limiting plate for the pressure rod to pass through. The pressure rod is placed on the limiting member, and a fourth spring is sleeved on the pressure rod. The upper end of the fourth spring is in contact with the cover body, and the lower end is placed on the limiting plate. A compression area is formed between the cover body and the limiting plate.

9. The freeze-drying equipment capable of negative pressure sterilization according to claim 8, characterized in that: The limiting component consists of a mounting section, a connecting section, a first inclined section, a horizontal section and a second inclined section. The pressure rod is placed on the horizontal section, and the second inclined section is placed between the first teeth.

10. A method for operating a freeze-drying device capable of negative pressure sterilization, using the freeze-drying device of claim 1, characterized in that: The following steps are involved: Step 1: Place the food to be processed on the food rack, start the motor, and keep the motor rotating clockwise to drive the belt to rotate, and the rotating part to rotate. The push block applies pressure to the limit assembly away from the input port to keep the fourth spring compressed; Step 2: The pressure rod applies pressure to the horizontal section on the limiter to keep the second inclined section separated from between the first teeth; Step 3: Place the food rack on the mounting base in the freeze-drying chamber and place it in the freeze-drying chamber through the coordination of the rack and gear on the food rack; Step 4: The guide block on the food rack pushes the driving plate to move in the vertical groove and the horizontal groove, and the driving plate drives the traction member to pull the sealing plate to seal the disinfection hole; Step 5: Close the door and start the freeze-drying equipment.

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