A freeze dryer and its feeding and discharging device

Abstract

The present invention relates to the technical field of drying equipment, and specifically to a freeze dryer and a material inlet and outlet device thereof, wherein the freeze dryer material inlet and outlet device comprises a drying cylinder, a bracket, a conveying unit and a storage hopper, wherein a drying chamber is provided inside the drying cylinder, a door is hinged at one end of the drying cylinder, the drying chamber is cylindrical in shape, and the bracket is arranged inside the drying chamber. The present invention is provided with a conveying unit and a storage hopper, so that the material is continuously transferred in a cycle between the storage hopper and the conveying unit, and since the material conveying directions of two adjacent conveying units from top to bottom are opposite, when the material falls, the initial velocity of the material is opposite to the transmission speed of the conveying unit, so that the material is easier to roll on the conveying unit, and the material rolling distance along the material conveying direction of the conveying unit is farther, so as to facilitate the position exchange between the upper and lower parts of the material, thereby making the consistency of the dryness and wetness of the material better, which is conducive to the centralized storage of batch materials.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, in particular to a freeze dryer and a material feeding and discharging device thereof. Background Art

[0002] The freeze dryer is the main equipment in freeze drying technology, which is mainly composed of a feeding mechanism, a drying chamber, a vacuum system, a heating system and a cooling system. Among them, the feeding mechanism, as an important part of the freeze dryer, is mainly responsible for smoothly feeding the material into the drying chamber for drying. The advantage of vacuum freeze drying technology is that it can maximize the retention of the nutritional value and original flavor of the material (such as sea cucumber), ensuring that the product is easy to store and rehydrate.

[0003] When materials are put in and out of the existing freeze dryer, usually after the door is opened, the operator will take out the loading plate corresponding to the materials that have been dried for a certain period of time from the drying chamber, and then put the loading plate corresponding to the undried materials into the drying chamber, and finally close the door and set the drying time. However, the existing freeze dryer equipment has the following problems: after the materials are placed on the loading plate, the materials are in a static state relative to the loading plate during the drying process, which will make the drying degree of the material close to the loading plate and the side away from the loading plate different, so that the dryness and wetness of the materials will be different, which is not conducive to the centralized storage of batch materials. Summary of the invention

[0004] Based on this, it is necessary to provide a freeze dryer and its feeding and discharging device to solve the problem of inconsistent drying degree of materials in the upper and lower layers when the materials are dried, in view of the problems existing in the current vacuum drying equipment.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A freeze dryer feeding and discharging device comprises:

[0007] A drying cylinder, wherein a drying chamber is provided inside the drying cylinder, and the drying chamber is cylindrical in shape;

[0008] A bracket, the bracket is arranged in the drying chamber;

[0009] Conveying units, there are multiple conveying units, the multiple conveying units are arranged on a bracket, and the multiple conveying units are arranged in intervals up and down in the drying chamber, and the conveying units are also configured so that the material moves in a serpentine trajectory from top to bottom between the multiple conveying units;

[0010] There are multiple storage hoppers, which are arranged at equal intervals around the axis of the drying chamber, and can rotate circumferentially around the axis of the drying chamber so that the material in the storage hopper can fall on the conveying unit at the upper part of the drying chamber, and the material on the conveying unit at the lower part of the drying chamber can fall into the storage hopper.

[0011] In one embodiment, the conveying unit includes a conveyor belt, a driving roller and a driven roller. The driving roller and the driven roller are arranged horizontally at intervals. The driving roller can rotate around its axis. The conveyor belt and the driving roller, and the conveyor belt and the driven roller are all transmission-connected.

[0012] In one embodiment, the conveyor belt is a mesh belt;

[0013] A slag collecting assembly is provided on the inner side of the conveyor belt, and the slag collecting assembly is used to collect slag falling from the mesh holes of the conveyor belt.

[0014] In one embodiment, the slag collection assembly includes a collection plate and an end connecting frame. The collection plate is located on the inner side of the conveyor belt. There are four end connecting frames. The four end connecting frames are rotated and arranged at the four corners of the collection plate respectively. The side of the end connecting frame away from the collection plate is arranged on the bracket.

[0015] In one of the embodiments, a slag conveying assembly is further included, and the slag conveying assembly is used to receive the slag collected by the slag collecting assembly and convey the received slag to a set position.

[0016] In one embodiment, the slag conveying assembly includes a rigid rod and a linear reciprocating unit. The rigid rod is arranged on the collecting plate, and the axis of the rigid rod coincides with the center line of the length direction of the collecting plate. The linear reciprocating unit is arranged on the bracket, and the linear reciprocating unit is used to drive the rigid rod to reciprocate linearly in the vertical direction.

[0017] In one embodiment, the linear reciprocating unit includes a rotating gear, a slider and a limit block. The rotating gear is rotatably connected to the bracket, and the rotating gear can rotate around its axis. The slider is arranged at the end of the rigid rod, and a slide groove is provided on the slider, and the slide groove extends in the horizontal direction. A guide column is eccentrically arranged on the circumferential surface of the rotating gear, and the guide column is slidably connected in the slide groove. The limit block is arranged on the bracket, and a limiting guide groove is provided on the side of the slider away from the rigid rod, and the limiting guide groove extends in the vertical direction. The limit block is slidably connected in the limiting guide groove.

[0018] In one embodiment, the slag conveying assembly further comprises an auger screw and a fixed pipe, the active roller and the driven roller are hollow inside, one end of the active roller and the driven roller is open, the fixed pipe is coaxially sleeved inside the active roller and the driven roller from the open end, the auger screw is coaxially fixedly connected with the active roller and the driven roller, and the auger screw is located inside the fixed pipe;

[0019] A slag discharge slot is provided at the lower part of one side of the fixed pipe, and a slag inlet slot is provided at the upper part of the fixed pipe;

[0020] Slag inlet holes are evenly opened on the circumference of the active roller and the driven roller;

[0021] The outer circumferences of the active roller and the driven roller are in sliding contact with the collecting plate.

[0022] In one embodiment, an intermediate gear is coaxially arranged at one end of the active roller and the driven roller away from the opening, and the intermediate gear is meshed with the rotating gear.

[0023] A freeze dryer uses the freeze dryer feeding and discharging device.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention is provided with a conveying unit and a storage hopper so that the material is continuously transferred between the storage hopper and the conveying unit in a cycle. Since the material conveying directions of the two adjacent conveying units from top to bottom are opposite, when the material falls, the initial velocity of the material is opposite to the conveying speed of the conveying unit. Therefore, the material is easier to roll on the conveying unit and rolls forward a longer distance along the material conveying direction of the conveying unit, so as to facilitate the position exchange between the upper and lower parts of the material, thereby making the consistency of the dryness and wetness of the material better, which is conducive to the centralized storage of batch materials.

[0026] 2. The present invention is provided with a slag collecting component and a slag conveying component, and the slag collecting component is used to collect the debris falling from the mesh of the conveyor belt to avoid the existence of the debris hindering the sublimation of ice crystals and causing a decrease in heat transfer efficiency. When the middle position of the collecting plate is in an upward convex state, the slag collected on the collecting plate can fall along the surface of the collecting plate, thereby being conveyed to the slag conveying component to avoid excessive accumulation of debris on the upper surface of the collecting plate. Moreover, since the middle position of the collecting plate can switch back and forth between convex and concave, it can promote the flow of airflow in the vertical direction and improve the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of a freeze dryer feeding and discharging device of the present invention;

[0028] Figure 2 This is an exploded view of a freeze dryer feeding and discharging device of the present invention;

[0029] Figure 3 A cross-sectional view of a freeze dryer feeding and discharging device of the present invention;

[0030] Figure 4 for Figure 3 A schematic diagram of the enlarged structure in the middle;

[0031] Figure 5 It is a schematic diagram of the upward convex state of a collecting plate in a freeze dryer feeding and discharging device of the present invention;

[0032] Figure 6It is a schematic diagram of a downward convex state of a collecting plate in a freeze dryer feeding and discharging device of the present invention;

[0033] Figure 7 for Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0034] Figure 8 It is a structural schematic diagram of a first motor and a second motor in a freeze dryer feeding and discharging device of the present invention;

[0035] Fig. 9 It is a structural schematic diagram of a slag conveying assembly in a freeze dryer feeding and discharging device of the present invention;

[0036] Fig.10 This is a structural schematic diagram of a fixed tube in a freeze dryer feeding and discharging device of the present invention;

[0037] Fig.11 This is a structural schematic diagram of a sliding block in a freeze dryer feeding and discharging device of the present invention;

[0038] Fig.12 The present invention is a schematic structural diagram of a rotating ring in a freeze dryer feeding and discharging device.

[0039] in:

[0040] 100, drying cylinder; 110, drying chamber; 120, rotating ring; 130, gear ring; 140, door; 150, vacuum exhaust port; 160, water vapor exhaust port; 170, base; 180, first motor; 190, first gear; 200, bracket; 210, slag receiving box; 220, heater; 300, conveying unit; 310, conveying belt; 320, driving roller; 330, driven roller; 340, slag inlet hole; 350, second motor; 40 0, storage hopper; 500, slag collecting assembly; 510, collecting plate; 520, end connecting frame; 600, slag conveying assembly; 610, rigid rod; 620, linear reciprocating unit; 621, rotating gear; 6211, guide column; 622, slider; 6221, slide groove; 6222, limit guide groove; 623, limit block; 630, auger spiral; 640, fixed pipe; 6401, slag discharge slot; 6402, slag inlet slot; 650, intermediate gear. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] like Figure 1-Figure 12 As shown, a freeze dryer feeding and discharging device includes a drying cylinder 100, a bracket 200, a conveying unit 300 and a storage hopper 400. A drying chamber 110 is provided inside the drying cylinder 100. A door 140 is hinged at one end of the drying cylinder 100. The drying chamber 110 is cylindrical in shape. The bracket 200 is arranged in the drying chamber 110. There are multiple conveying units 300. The multiple conveying units 300 are arranged on the bracket 200, and the multiple conveying units 300 are arranged in the drying chamber 110 at intervals up and down. The element 300 is also configured so that the material moves in a serpentine trajectory from top to bottom between the multiple conveying units 300. There are multiple storage hoppers 400, and the multiple storage hoppers 400 are arranged at equal intervals around the axis of the drying chamber 110, and the multiple storage hoppers 400 can rotate circumferentially around the axis of the drying chamber 110, so that the material in the storage hopper 400 can fall on the conveying unit 300 at the upper part of the drying chamber 110, and the material on the conveying unit 300 at the lower part of the drying chamber 110 can fall into the storage hopper 400.

[0045] During use, the staff opens the warehouse door 140 and disperses the materials to be dried (taking sea cucumbers as an example) into each storage hopper 400. Next, the warehouse door 140 is closed to place the drying chamber 110 in a vacuum environment. The temperature in the drying chamber 110 is set to be maintained between minus 20 degrees Celsius and minus 40 degrees Celsius for a first preset time, and then between zero degrees Celsius and forty degrees Celsius for a second preset time. Next, multiple storage hoppers 400 are rotated circumferentially around the axis of the drying chamber 110. At the same time, multiple conveying units 300 are started. As the storage hopper 400 rotates, when the storage hopper 400 loaded with materials rotates to the upper part of the drying chamber 110, the materials fall from the storage hopper 400 to the conveying unit 300 at the upper part of the drying chamber 110. At this time, the materials move in a serpentine trajectory from top to bottom between the multiple conveying units 300. When the materials are conveyed from the conveying unit 300 at the lower part of the drying chamber 110, the conveying unit 300 moves downward. 0 falls into the storage hopper 400 below it, and then follows the storage hopper 400 to continue to move to the upper part of the drying chamber 110, and then falls again to the conveying unit 300 at the upper part of the drying chamber 110, so the material is continuously transferred between the storage hopper 400 and the conveying unit 300, so the material is not stationary in the drying chamber 110, and because the material conveying directions of the two adjacent conveying units 300 from top to bottom are opposite, when the material falls, the initial velocity of the material is opposite to the conveying speed of the conveying unit 300, so the material is easier to roll on the conveying unit 300, and the forward rolling distance along the material conveying direction of the conveying unit 300 is farther, so as to facilitate the position exchange between the upper and lower parts of the material, thereby ensuring that the freeze-drying degree between the upper and lower parts of the material will not be very different, that is, the consistency of the dryness and humidity of the material is better, which is conducive to the centralized storage of batch materials.

[0046] It should also be noted that if the material is larger in circumference, a longer rolling distance is required to ensure the exchange between the upper and lower parts of the material. In this way, the movement form of the conveying unit 300 can be adjusted so that the conveying unit 300 first rotates in the material conveying direction for a first specified time, and then rotates in the opposite direction of the material conveying direction for a second specified time. The first specified time is twice the second specified time. In this way, the material can roll a longer distance on each conveying unit 300 to cope with materials with a larger circumferential length.

[0047] It should also be noted that if Figure 2 and Fig.12As shown, in order to enable the multiple storage hoppers 400 to rotate circumferentially around the axis of the drying chamber 110, specifically, a rotating ring 120 is rotatably connected inside the drying chamber 110, and the multiple storage hoppers 400 are evenly distributed around the inner circumferential wall of the rotating ring 120 and buckled on the inner circumferential wall of the rotating ring 120. A ring gear 130 is provided on one side of the inner circumferential surface of the rotating ring 120. In order to drive the rotating ring 120 to rotate, specifically, a first motor 180 is provided on the bracket 200, and the output shaft of the first motor 180 is fixedly connected to the first gear 190, and the first gear 190 is meshed with the ring gear 130, so that the rotation of the first motor 180 drives the first gear 190 to rotate, the first gear 190 drives the ring gear 130 to rotate, and the ring gear 130 drives the rotating ring 120 to rotate.

[0048] It should also be noted that in the second stage of vacuum freeze-drying at a temperature between zero and forty degrees Celsius, the temperature inside the drying chamber 110 needs to be raised. Specifically, a heater 220 is provided on the bracket 200, and the heater 220 generates heat to raise the temperature inside the drying chamber 110 to the required temperature.

[0049] It should also be noted that, in order to evacuate the interior of the drying chamber 110, a vacuum suction port 150 is further provided on the peripheral wall of the drying cylinder 100. The vacuum suction port 150 is connected to the interior of the drying chamber 110 and is used to connect a vacuum pumping device through the vacuum suction port 150 to evacuate the interior of the drying chamber 110 into a vacuum environment. In addition, in order to extract the heat in the drying chamber 110, a water vapor suction port 160 is further provided on the peripheral wall of the drying cylinder 100. The water vapor suction port 160 is used to extract a small amount of water vapor evaporated from the material in the second stage of vacuum freeze-drying at 0 degrees Celsius to 40 degrees Celsius.

[0050] It should also be noted that if Figure 2 As shown, a base 170 is provided at the lower part of the drying cylinder 100 , and the base 170 is used to support the drying cylinder 100 .

[0051] It should also be noted that the materials to be dried are dispersed and placed in various storage hoppers 400. The above-mentioned storage hoppers 400 refer to the various storage hoppers 400 in the area from the bottom of the drying cylinder 100 to the lower right side of the drying cylinder 100. After the above-mentioned storage hoppers 400 put the materials into them, the materials will not slip out of the storage hoppers 400.

[0052] It should also be added that, in order to prevent the material in the storage hopper 400 from falling when the storage hopper 400 rotates to the middle position of the drying cylinder 100, the staff should make sure that the material storage amount in the storage hopper 400 is moderate when adding material to the storage hopper 400 in a quantitative manner, so that the material will not fall when the storage hopper 400 moves to the upper right side of the drying cylinder 100. In this way, the material in the storage hopper 400 will not fall when the storage hopper 400 rotates to the middle position on the right side of the drying cylinder 100. In addition, the slope of the outer bucket plate of the storage hopper 400 should be moderate, and the slope should not be too small, so that when the storage hopper 400 moves to the upper part of the drying cylinder 100, the material in the storage hopper 400 can be completely poured onto the material conveying unit 300, so that after the storage hopper 400 moves to the upper position beyond the drying cylinder 100, there will be no material remaining inside the storage hopper 400, so that when the storage hopper 400 continues to move to the middle position on the left side of the drying cylinder 100, the material will not fall out of the storage hopper 400.

[0053] It can be understood that in order to prevent the material from breaking during the transfer between the storage hopper 400 and the conveying unit 300, the conveying unit 300 can be arranged to reduce the distance between two adjacent conveying units 300, increase the number of conveying units 300, and reduce the falling distance of the material transferred between the storage hopper 400 and the conveying unit 300, thereby avoiding the material from being broken during the transfer process.

[0054] In a further embodiment, Figure 2 and Fig. 9 As shown, the conveying unit 300 includes a conveyor belt 310, an active roller 320 and a driven roller 330. The active roller 320 and the driven roller 330 are arranged horizontally at intervals. The active roller 320 can rotate around its axis. The conveyor belt 310 and the active roller 320, as well as the conveyor belt 310 and the driven roller 330 are all transmission-connected.

[0055] When in use, the active roller 320 rotates around its axis, the active roller 320 drives the conveyor belt 310 to transmit, and the conveyor belt 310 drives the driven roller 330 to rotate. At this time, the material falling onto the conveyor belt 310 is at the same speed as the conveyor belt 310, and is transported forward synchronously with the conveyor belt 310.

[0056] It should be supplemented that, in order to drive the active roller 320 to rotate around its axis, specifically, as Figure 2 As shown, a second motor 350 is disposed on the bracket 200 , and the second motor 350 is a servo motor. The output shaft of the second motor 350 is coaxially fixedly connected to the active roller 320 .

[0057] In a further embodiment, Figure 2 and Figure 3As shown, the conveyor belt 310 is a mesh belt, and a slag collecting assembly 500 is provided on the inner side of the conveyor belt 310 . The slag collecting assembly 500 is used to collect slag falling from the mesh holes of the conveyor belt 310 .

[0058] Taking sea cucumber as an example, some debris will be produced during the freeze-drying process. The presence of these debris will reduce the heat transfer efficiency and hinder the sublimation of ice crystals. Therefore, the debris needs to be removed in time during the vacuum drying process, so the conveyor belt 310 is a mesh belt, so that the debris can fall through the mesh holes of the conveyor belt 310 in time. The debris collection component 500 is located on the inner side of the conveyor belt 310, and the debris falling from the mesh holes of the conveyor belt 310 will fall on the debris collection component 500, so that the debris can be removed from the material in time to avoid hindering the sublimation of ice crystals due to the presence of debris, resulting in reduced heat transfer efficiency.

[0059] It should also be noted that, since the material on the conveyor belt 310 rolls relative to the conveyor belt 310 , the vibration generated by the rolling of the material can promote the sinking of the debris in the material, so that the debris can be fully removed.

[0060] In a further embodiment, Figure 4 As shown, the slag collecting assembly 500 includes a collecting plate 510 and an end connecting frame 520. The collecting plate 510 is located on the inner side of the conveyor belt 310. There are four end connecting frames 520. The four end connecting frames 520 are respectively rotated and arranged at the four corners of the collecting plate 510. The side of the end connecting frame 520 away from the collecting plate 510 is arranged on the bracket 200.

[0061] like Figure 4 As shown, the collecting plate 510 is located on the inner side of the conveyor belt 310 , and the debris falling from the mesh of the conveyor belt 310 will fall onto the collecting plate 510 , and will not fall onto another conveyor belt 310 located below the conveyor belt 310 .

[0062] It should be supplemented that the end connecting frame 520 is provided to connect the four corners of the collecting plate 510 so that after a certain amount of debris is carried on the upper surface of the collecting plate 510, the collecting plate 510 itself will not be tilted due to force.

[0063] In a further embodiment, Figure 3-Figure 6As shown, the freeze dryer feeding and discharging device also includes a slag conveying component 600, which is used to receive the slag collected by the slag collecting component 500 and convey the received slag to a set position. The slag conveying component 600 includes a rigid rod 610 and a linear reciprocating unit 620. The rigid rod 610 is arranged on the collecting plate 510, and the axis of the rigid rod 610 coincides with the center line of the length direction of the collecting plate 510. The linear reciprocating unit 620 is arranged on the bracket 200. The linear reciprocating unit 620 is used to drive the rigid rod 610 to reciprocate in a straight line in the vertical direction. The slag conveying component 600 also includes an auger screw 630 and a fixed pipe 640. The active roller 320 and the driven roller 330 are hollow inside, and one end of the active roller 320 and the driven roller 330 are open. The fixed tube 640 is coaxially sleeved on the active roller 320 and the driven roller 330 from the open end. The auger screw 630 is coaxially fixedly connected with the active roller 320 and the driven roller 330, and the auger screw 630 is located inside the fixed tube 640. A slag discharge slot 6401 is provided at the lower part of one side of the fixed tube 640, and a slag inlet slot 6402 is provided at the upper part of the fixed tube 640. Slag inlet holes 340 are evenly provided on the circumference of the active roller 320 and the driven roller 330, and the outer peripheral surfaces of the active roller 320 and the driven roller 330 are in sliding contact with the collecting plate 510.

[0064] During the vacuum drying process, the linear reciprocating unit 620 is in a process of linear reciprocating motion in the vertical direction. At this time, the linear reciprocating unit 620 drives the rigid rod 610 to reciprocate vertically. Since the axis of the rigid rod 610 coincides with the center line of the length direction of the collecting plate 510, the rigid rod 610 drives the middle position of the collecting plate 510 to reciprocate up and down. When the rigid rod 610 moves to the upper limit position, the middle part of the collecting plate 510 is convex and arched, so the debris on the upper surface of the collecting plate 510 will move along the The upper surface of the collecting plate 510 slides to a position close to the active roller 320 and the driven roller 330. At this time, the slag enters the fixed tube 640 through the slag inlet hole 340 and the slag inlet slot 6402. Further, under the action of the auger screw 630, the material falls from the slag outlet slot 6401. At this time, a slag box 210 is placed below the slag outlet slot 6401. The slag can be collected through the slag box 210. Specifically, the slag box 210 is arranged on the bracket 200 and is located below the slag outlet slot 6401.

[0065] It should be noted that during the linear reciprocating movement of the linear reciprocating unit 620, the state of the collecting plate 510 is Figure 5 and Figure 6 Switching back and forth between the two can promote the vertical flow of air in the drying chamber 110, thereby making the heat exchange efficiency higher and shortening the time required for vacuum freeze-drying. In addition, the flow of air can also promote the debris in the material to pass through the mesh of the conveyor belt 310.

[0066] In a further embodiment, Figure 4 and Fig.11 As shown, the linear reciprocating unit 620 includes a rotating gear 621, a slider 622 and a limit block 623. The rotating gear 621 is rotatably connected to the bracket 200, and the rotating gear 621 can rotate around its axis. The slider 622 is arranged at the end of the rigid rod 610. A slide groove 6221 is provided on the slider 622, and the slide groove 6221 extends in the horizontal direction. A guide column 6211 is eccentrically arranged on the circumferential surface of the rotating gear 621, and the guide column 6211 is slidably connected in the slide groove 6221. The limit block 623 is arranged on the bracket 200. A limiting guide groove 6222 is provided on the side of the slider 622 away from the rigid rod 610, and the limiting guide groove 6222 extends in the vertical direction. The limit block 623 is slidably connected in the limiting guide groove 6222.

[0067] During the vacuum drying process, the rotating gear 621 rotates around its axis, and the rotating gear 621 drives the guide column 6211 to rotate eccentrically. Since the guide column 6211 is slidably connected in the slide groove 6221, the slider 622 reciprocates up and down with the eccentric rotation of the guide column 6211, and the slider 622 drives the rigid rod 610 to reciprocate up and down synchronously. The rigid rod 610 drives the middle position of the collecting plate 510 to reciprocate up and down, so that the state of the collecting plate 510 is Figure 5 and Figure 6 Toggle back and forth.

[0068] In a further embodiment, Figure 4 As shown, an intermediate gear 650 is coaxially arranged at one end of the active roller 320 and the driven roller 330 away from the opening, and the intermediate gear 650 is meshed with the rotating gear 621 .

[0069] During the rotation of the active roller 320 and the driven roller 330 , the active roller 320 and the driven roller 330 drive the corresponding intermediate gear 650 to rotate, and the intermediate gear 650 drives the rotating gear 621 to rotate, so that the rotating gear 621 drives the guide column 6211 to rotate eccentrically.

[0070] A freeze dryer uses the freeze dryer feeding and discharging device.

[0071] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A freeze dryer feeding and discharging device, characterized in that: include: A drying cylinder, wherein a drying chamber is provided inside the drying cylinder, and the drying chamber is cylindrical in shape; A bracket, the bracket is arranged in the drying chamber; Conveying units, there are multiple conveying units, the multiple conveying units are arranged on a bracket, and the multiple conveying units are arranged in intervals up and down in the drying chamber, and the conveying units are also configured so that the material moves in a serpentine trajectory from top to bottom between the multiple conveying units; A storage hopper, wherein there are multiple storage hoppers, the multiple storage hoppers are arranged at equal intervals around the axis of the drying chamber, and the multiple storage hoppers can rotate circumferentially around the axis of the drying chamber, so that the material in the storage hopper can fall on the conveying unit at the upper part of the drying chamber, and the material on the conveying unit at the lower part of the drying chamber can fall into the storage hopper; the conveying unit includes a conveyor belt, a driving roller and a driven roller, the driving roller and the driven roller are arranged horizontally and spaced apart, the driving roller can rotate around its axis, and the conveyor belt and the driving roller, as well as the conveyor belt and the driven roller are all transmission-connected; the conveyor belt is a mesh belt; A slag collecting assembly is provided on the inner side of the conveyor belt, and the slag collecting assembly is used to collect the slag falling from the mesh of the conveyor belt; the slag collecting assembly includes a collecting plate and an end connecting frame, the collecting plate is located on the inner side of the conveyor belt, there are four end connecting frames, the four end connecting frames are rotatably arranged at the four corners of the collecting plate, and the end connecting frame is arranged on a bracket away from the collecting plate; the freeze dryer feeding and discharging device also includes a slag conveying assembly, and the slag conveying assembly is used to receive the slag collected by the slag collecting assembly and convey the received slag to a set position; the slag conveying assembly includes a rigid rod and a linear reciprocating unit, the rigid rod is arranged on the collecting plate, and the axis of the rigid rod coincides with the center line of the length direction of the collecting plate, the linear reciprocating unit is arranged on the bracket, and the linear reciprocating unit is used to drive the rigid rod to reciprocate linearly in the vertical direction.

2. A freeze dryer feeding and discharging device according to claim 1, characterized in that: The linear reciprocating unit includes a rotating gear, a slider and a limit block. The rotating gear is rotatably connected to the bracket and can rotate around its axis. The slider is arranged at the end of the rigid rod. A slide groove is provided on the slider. The slide groove extends in the horizontal direction. A guide column is eccentrically arranged on the circumferential surface of the rotating gear. The guide column is slidably connected in the slide groove. The limit block is arranged on the bracket. A limit guide groove is provided on the side of the slider away from the rigid rod. The limit guide groove extends in the vertical direction. The limit block is slidably connected in the limit guide groove.

3. A freeze dryer feeding and discharging device according to claim 1, characterized in that: The slag conveying assembly also includes an auger screw and a fixed pipe, the active roller and the driven roller are hollow inside, one end of the active roller and the driven roller is open, the fixed pipe is coaxially sleeved inside the active roller and the driven roller from the open end, the auger screw is coaxially fixedly connected with the active roller and the driven roller, and the auger screw is located inside the fixed pipe; A slag discharge slot is provided at the lower part of one side of the fixed pipe, and a slag inlet slot is provided at the upper part of the fixed pipe; Slag inlet holes are evenly opened on the circumference of the active roller and the driven roller; The outer circumferences of the active roller and the driven roller are in sliding contact with the collecting plate.

4. A freeze dryer feeding and discharging device according to claim 3, characterized in that: An intermediate gear is coaxially arranged at one end of the active roller and the driven roller away from the opening, and the intermediate gear is meshed with the rotating gear.

5. A freeze dryer, characterized in that: The freeze dryer feeding and discharging device according to any one of claims 1 to 4 is used.

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