Freeze Dryer

Abstract

The invention discloses a freeze dryer, comprising a box body and a plurality of lower concave plate layers and a plurality of upper concave plate layers arranged in the box body, wherein the lower concave plate layers and the upper concave plate layers are arranged alternately up and down, a first flow guide channel is arranged on the upper surface of the lower concave plate layer, a second flow guide channel is arranged on the upper surface of the upper concave plate layer, and a material discharge port is arranged on both the upper concave plate layer and the lower concave plate layer. The freeze dryer has the advantages of simple structure, easy sealing, high safety, and convenient cleaning and material collection.

Description

Technical Field

[0001] The invention relates to the technical field of food and medicine packaging machinery and equipment, in particular to a freeze dryer. Background Art

[0002] The freeze dryer needs to produce materials continuously and has high requirements for the transportation of materials in a vacuum state. Traditional freeze dryers generally use belt transmission, screw transmission, etc. to transport materials. Belt transmission and screw transmission both require dynamic sealing, which makes it difficult to achieve complete sealing and prone to leakage, resulting in high production risks. In addition, the material transmission structure of existing freeze dryers is complex, difficult to clean, with a high risk of cross contamination, and inconvenient for material collection. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a freeze dryer which has a simple structure, is easy to seal, has high safety, and is convenient for cleaning and collecting materials.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A freeze dryer comprises a box body and a plurality of lower concave plate layers and a plurality of upper concave plate layers arranged in the box body, wherein the lower concave plate layers and the upper concave plate layers are arranged alternately up and down, the upper surface of the lower concave plate layer is provided with a first guide channel, the upper surface of the upper concave plate layer is provided with a second guide channel, and both the upper concave plate layer and the lower concave plate layer are provided with a discharge port.

[0006] As a further improvement of the above technical solution:

[0007] The first flow guiding channel and / or the second flow guiding channel is an arc-shaped channel.

[0008] The first flow guiding channel and / or the second flow guiding channel is a spiral channel, and the discharge port of the lower concave plate layer is located at the center of the lower concave plate layer.

[0009] The lower concave plate layer is a conical disk with a positive V-shaped cross section, and the upper concave plate layer is a conical disk with an inverted V-shaped cross section.

[0010] The uppermost plate layer is the upper concave plate layer, and the lowermost plate layer is the lower concave plate layer.

[0011] A discharge port is arranged at the bottom of the box body.

[0012] The freeze dryer further comprises a vibration mechanism, and the lower concave plate layer and / or the upper concave plate layer are respectively connected to at least one vibration mechanism.

[0013] The vibration mechanism includes a first vibrator and a second vibrator, both of which are provided with support rods, which are movably inserted into the bottom wall of the box and extend into the box, the lower concave plate layer is fixed on the support rod on the first vibrator, and the upper concave plate layer is fixed on the support rod on the second vibrator.

[0014] A corrugated tube is arranged between the support rod and the bottom wall of the box body.

[0015] The lower concave plate layer and the upper concave plate layer are both provided with refrigerant flow channels inside.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The freeze dryer of the present invention comprises a box body and a plurality of lower concave plate layers and a plurality of upper concave plate layers arranged in the box body, wherein the lower concave plate layers and the upper concave plate layers are arranged alternately up and down, the upper surface of the lower concave plate layer is provided with a first guide channel, the upper surface of the upper concave plate layer is provided with a second guide channel, and both the upper concave plate layer and the lower concave plate layer are provided with a discharge port. Under the action of gravity and / or vibration, the material slides down layer by layer from the uppermost plate layer to the bottom of the box body, specifically, the material flows along the guide channel of the upper plate layer to the discharge port of the upper plate layer, falls to the guide channel of the lower plate layer through the discharge port of the upper plate layer, and then flows along the guide channel of the lower plate layer to the discharge port of the lower plate layer, thereby realizing the material falling layer by layer. The freeze dryer can make the material fall through the plate layer by layer, without the requirement of dynamic sealing, which makes sealing easier, reduces the risk of leakage, has high safety, and the material can fall continuously, realizes continuous transportation, simplifies the material transmission structure, and is easy to clean. When cleaning, water is poured on the top plate layer, and the water falls layer by layer, so that cleaning can be achieved layer by layer. The freeze dryer has a simple structure, is easy to seal, has high safety, and is easy to clean and collect materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional view of the freeze dryer of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the freeze dryer of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the upper concave plate layer of the freeze dryer of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the concave plate layer of the freeze dryer of the present invention.

[0022] Figure 5 It is another structural schematic diagram of the concave plate layer of the freeze dryer of the present invention.

[0023] The symbols in the figure represent:

[0024] 1. Box body; 11. Discharge port; 2. Lower concave plate layer; 21. First guide channel; 22. Discharge port; 3. Upper concave plate layer; 31. Second guide channel; 4. Dropping chute; 5. Vibration mechanism; 51. First vibrator; 52. Second vibrator; 6. Support rod; 7. Bellows; 8. Spiral guide plate; 9. Arc guide plate. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Figures 1 to 4 An embodiment of the freeze dryer of the present invention is shown, and the freeze dryer comprises a box body 1 and a plurality of lower concave plate layers 2 and a plurality of upper concave plate layers 3 arranged in the box body 1, the lower concave plate layers 2 and the upper concave plate layers 3 are arranged alternately up and down, the upper surface of the lower concave plate layer 2 is provided with a first guide channel 21, the upper surface of the upper concave plate layer 3 is provided with a second guide channel 31, and both the upper concave plate layer 3 and the lower concave plate layer 2 are provided with a discharge port 22. Under the action of gravity and / or vibration, the material slides down layer by layer from the uppermost plate layer to the bottom of the box body 1, specifically, the material flows along the guide channel of the upper plate layer to the discharge port 22 of the upper plate layer, falls to the guide channel of the lower plate layer through the discharge port 22 of the upper plate layer, and then flows along the guide channel of the lower plate layer to the discharge port 22 of the lower plate layer, thereby realizing the material falling layer by layer. The freeze dryer can make the material fall through the plate layer by layer, without the requirement of dynamic sealing, which makes sealing easier, reduces the risk of leakage, has high safety, and the material can fall continuously, realizes continuous transportation, simplifies the material transmission structure, and is easy to clean. When cleaning, water is poured on the top plate layer, and the water falls layer by layer, so that cleaning can be achieved layer by layer. The freeze dryer has a simple structure, is easy to seal, has high safety, and is easy to clean and collect materials.

[0027] In this embodiment, the first flow guiding channel 21 and / or the second flow guiding channel 31 are arc-shaped channels. The first flow guiding channel 21 and / or the second flow guiding channel 31 are arranged as arc-shaped channels, which can extend the freeze-drying time of the material along the length of the long channel.

[0028] In this embodiment, Figures 2 to 4 As shown, the first guide channel 21 and / or the second guide channel 31 are spiral channels, and the discharge port 22 of the lower concave plate layer 2 is located at the center of the lower concave plate layer 2. Optimally, the first guide channel 21 and the second guide channel 31 are both spiral channels, and the spiral channel can extend the length of the guide channel to a greater length, further extending the freeze-drying time of the material. Specifically, a spiral guide plate 8 is provided on the lower concave plate layer 2 and the upper concave plate layer 3, and the spiral channel is formed in the spiral guide plate 8. The material on the lower concave plate layer 2 moves from the outside to the center along the spiral channel, and the material on the upper concave plate layer 3 moves from the center to the outside along the spiral channel.

[0029] In other embodiments, Figure 5 As shown, the first guide channel 21 on the upper surface of the lower concave plate layer 2 is an arc-shaped channel, and multiple guide channels are provided, which are spaced around the center of the lower concave plate layer 2, preferably evenly spaced, one end of the arc-shaped channel points to the center of the lower concave plate layer 2, and the other end points to the outer edge of the lower concave plate layer 2. The two side walls of the arc-shaped channel are arc-shaped guide plates 9 fixed on the lower concave plate layer 2; the upper surface of the upper concave plate layer 3 is provided with a second guide channel 31 which is an arc-shaped channel, and multiple guide channels are provided, which are spaced around the center of the upper concave plate layer 3, preferably evenly spaced, one end of the arc-shaped channel points to the center of the upper concave plate layer 3, and the other end points to the outer edge of the upper concave plate layer 3. The two side walls of the arc-shaped channel are arc-shaped guide plates 9 fixed on the upper concave plate layer 3;

[0030] In this embodiment, Figures 2 to 4 As shown, the lower concave plate layer 2 is a conical disk with a positive V-shaped cross section, and the upper concave plate layer 3 is a conical disk with an inverted V-shaped cross section. The spiral center of the first guide channel 21 is collinear with the center of the lower concave plate layer 2, and the spiral center of the second guide channel 31 is collinear with the center of the upper concave plate layer 3. The discharge port 22 of the upper concave plate layer 3 is formed at the outer end of the second guide channel 31.

[0031] In this embodiment, the topmost plate layer is the upper concave plate layer 3, and the bottommost plate layer is the lower concave plate layer 2. The topmost plate layer is the upper concave plate layer 3, which is convenient for feeding materials to the middle of the topmost plate layer, and the bottommost plate layer is the lower concave plate layer 2, which is convenient for materials to fall to the bottom of the box body 1 through the feeding opening 22 in the middle of the bottommost plate layer, which is convenient for collection.

[0032] In this embodiment, Figure 1 and Figure 2 As shown, a discharge port 11 is provided at the bottom of the box body 1. Specifically, the discharge port 22 of the lowermost concave plate layer 2 is connected to a drop chute 4, the bottom end of which is located above the discharge port 11, so that the material falls into the discharge port 11 through the drop chute 4. Of course, a collection box can be provided below the discharge port 11 for collecting the material.

[0033] In this embodiment, Figure 1 and Figure 2As shown, the freeze dryer also includes a vibration mechanism 5, and the lower concave plate layer 2 and / or the upper concave plate layer 3 are respectively connected to at least one vibration mechanism 5. The vibration mechanism 5 can make the plate layer connected thereto vibrate to control the sliding speed of the material on the plate layer, so that the transmission speed of the material can be controlled. The lower concave plate layer 2 and / or the upper concave plate layer 3 are respectively connected to at least one vibration mechanism 5, that is, the lower concave plate layer 2 and the upper concave plate layer 3 can be connected to a vibration mechanism 5 together so that each plate layer vibrates at the same time, or can be respectively connected to a vibration mechanism 5 (that is, each lower concave plate layer 2 is connected to a vibration mechanism 5, and each upper concave plate layer 3 is connected to a vibration mechanism 5), so that the transmission speed of the lower concave plate layer 2 and the upper concave plate layer 3 is separately controlled by their respective vibration mechanisms 5, and can also be respectively connected to more than two vibration mechanisms 5, such as, each lower concave plate layer 2 and each upper concave plate layer 3 are respectively corresponding to their own vibration mechanisms 5, so as to achieve the effect of controlling the transmission speed of each layer of the plate layer separately.

[0034] In this embodiment, the vibration mechanism 5 includes a first vibrator 51 and a second vibrator 52. The first vibrator 51 and the second vibrator 52 are both provided with a support rod 6. The support rod 6 is movably arranged in the bottom wall of the box body 1 and extends into the box body 1. The lower concave plate layer 2 is fixed to the support rod 6 on the first vibrator 51, and the upper concave plate layer 3 is fixed to the support rod 6 on the second vibrator 52. Since the support rod 6 is movably arranged in the bottom wall of the box body 1, the vibration of the vibration mechanism 5 is prevented from causing the vibration of the box body 1.

[0035] In this embodiment, Figure 1 and Figure 2 As shown, a bellows 7 is provided between the support rod 6 and the bottom wall of the box body 1. The bellows 7 can maintain the seal between the support rod 6 and the bottom wall of the box body 1, the bellows 7 is flexible, the end face of the bellows 7 is statically sealed, the sealing performance is reliable, and the box body 1 will not vibrate.

[0036] In this embodiment, a refrigerant flow channel (not shown in the drawings) is provided inside the lower concave plate layer 2 and the upper concave plate layer 3. The refrigerant circulates independently inside each plate layer, and the temperature can be controlled independently. The refrigerant is preferably silicone oil.

[0037] During operation, the plate layer vibrates, and the material falls from the top center of the box body 1 onto the upper concave plate layer 3 of the uppermost layer. The material moves spirally along the spiral channel on the upper concave plate layer 3, and then falls from the edge onto the lower concave plate layer 2 of the lower layer. Then, the material moves spirally along the spiral channel on the lower concave plate layer 2, and then falls from the discharge port 22 at the center of the lower concave plate layer 2 onto the upper concave plate layer 3 of the lower layer, until finally entering the discharge port 11 from the discharge port 22 at the center of the lower concave plate layer 2 of the lowermost layer, so as to facilitate material collection. The number of plate layers is greater than or equal to the number of plate layer temperature gradients required by the drying process. When the plate layers are cleaned, the cleaning water will also be cleaned in all directions like the direction of material transportation.

[0038] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A freeze dryer, characterized in that: The freeze dryer comprises a box body (1) and a plurality of lower concave plate layers (2) and a plurality of upper concave plate layers (3) arranged in the box body (1), wherein the lower concave plate layers (2) and the upper concave plate layers (3) are arranged alternately up and down, the upper surface of the lower concave plate layer (2) is provided with a first flow guide channel (21), the upper surface of the upper concave plate layer (3) is provided with a second flow guide channel (31), and both the upper concave plate layer (3) and the lower concave plate layer (2) are provided with a feed opening (22); the freeze dryer further comprises a vibration mechanism (5 ), the vibration mechanism (5) comprises a first vibrator (51) and a second vibrator (52), the first vibrator (51) and the second vibrator (52) are both provided with a support rod (6), the support rod (6) is movably arranged in the bottom wall of the box body (1) and extends into the box body (1), the lower concave plate layer (2) is fixed to the support rod (6) on the first vibrator (51), and the upper concave plate layer (3) is fixed to the support rod (6) on the second vibrator (52).

2. The freeze dryer according to claim 1, characterized in that: The first flow guiding channel (21) and / or the second flow guiding channel (31) are arc-shaped channels.

3. The freeze dryer according to claim 2, characterized in that: The first flow guiding channel (21) and / or the second flow guiding channel (31) are spiral channels, and the discharge port (22) of the concave plate layer (2) is located at the center of the concave plate layer (2).

4. The freeze dryer according to claim 1, characterized in that: The lower concave plate layer (2) is a conical disk with a positive V-shaped cross section, and the upper concave plate layer (3) is a conical disk with an inverted V-shaped cross section.

5. The freeze dryer according to claim 1, characterized in that: The uppermost plate layer is an upper concave plate layer (3), and the lowermost plate layer is a lower concave plate layer (2).

6. The freeze dryer according to claim 5, characterized in that: The bottom of the box body (1) is provided with a discharge port (11).

7. The freeze dryer according to claim 1, characterized in that: A corrugated tube (7) is provided between the support rod (6) and the bottom wall of the box body (1).

8. The freeze dryer according to any one of claims 1 to 7, characterized in that: The lower concave plate layer (2) and the upper concave plate layer (3) are both provided with refrigerant flow channels inside.

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