Natto freeze dryer

Abstract

The utility model discloses a natto freeze-drying machine, which relates to the field of freeze-drying equipment and comprises a freeze-drying machine, the top of the freeze-drying machine is provided with a control cavity, a display controller and a freeze-drying box, the display controller is used for controlling the working condition of the freeze-drying machine, and the freeze-drying box is mounted at the top of the freeze-drying machine; the bearing wall is fixedly installed at the top of the freeze dryer and further located at the top of the control cavity; the bearing plate is fixedly mounted in an inner cavity of the bearing wall; the sealing cover is clamped at the top end of the bearing wall; the driving assembly is mounted at the bottom of the control cavity; according to the natto freeze dryer, the driving assembly drives the second transmission shaft to move up and down in a reciprocating mode along the axis of the second transmission shaft, and a transmission groove formed in the second transmission shaft is limited by a clamping pin fixedly installed on the inner wall of a clamping sleeve so that the second transmission shaft can rotate while moving up and down; the stirring assembly extrudes an ice layer from top to bottom and turns over the natto from bottom to top, so that the distribution of the natto viscous material is more uniform.

Description

Technical Field

[0001] The utility model relates to freeze-drying equipment technology, in particular to a natto freeze-dryer. Background Art

[0002] A freeze dryer (also known as a food vacuum freeze dryer) is a device specifically designed for freeze drying. It utilizes the principles of freezing and sublimation to freeze the moisture in materials into ice crystals at low temperatures. Heating the ice crystals in a vacuum condition then causes the ice crystals to sublime directly into water vapor. Finally, the vapor is condensed into water through a condenser and discharged. This removes moisture from the material, enabling long-term storage and maintaining its original properties. This equipment is widely used in a variety of fields, including food, pharmaceuticals, biological products, and chemicals.

[0003] The Chinese utility model patent with publication number CN 221005710U discloses a freeze dryer. In this freeze dryer, multiple pressure plates are placed above multiple trays and are threaded onto a screw using threaded holes in the middle of the plates. The downward-moving pressure plates can be used to squeeze the material to be frozen on the trays, thereby breaking the traditional freeze-drying method of static freeze drying in freeze dryers and improving the freezing uniformity and freezing effect of the material.

[0004] Although the utility model uses the pressure plate to squeeze the material to be frozen on the tray to poke holes in the concentrated piled material to improve the uniformity of freezing, there is a sticky substance between the natto to stick to each other, which makes it very easy for the natto to stick to the tray when the pressure plate is squeezed. Although poking holes in the piled natto can promote the uniformity of freezing to a certain extent, the natto at the bottom is wrapped with more sticky substance, while the natto at the top is relatively less wrapped with sticky substance, resulting in the freezing degree of the natto at the bottom being lower than the cooling degree of the natto at the top. When natto is freeze-dried on a large scale, it causes uneven freezing, resulting in uneven drying of the final natto, which is not conducive to the preservation of natto. Utility Model Content

[0005] The purpose of the utility model is to provide a natto freeze dryer to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a natto freeze dryer, comprising a freeze dryer, wherein a control chamber and a display controller for controlling the working conditions of the freeze dryer are provided on the top of the freeze dryer, and further comprising:

[0007] A freeze-drying box, which is installed on the top of the freeze dryer;

[0008] The freeze-drying box comprises:

[0009] A bearing wall, which is fixedly mounted on the top of the freeze dryer and is also located on the top of the control chamber;

[0010] A bearing plate, which is fixedly installed in the inner cavity of the bearing wall;

[0011] A sealing cover, which is clamped on the top of the bearing wall;

[0012] A drive assembly is mounted at the bottom of the control chamber;

[0013] A limiter, which is mounted on the top of the drive assembly and is also located below the bearing plate;

[0014] A drive shaft is mounted on the top of the limiter, located in the inner cavity of the bearing wall, and a thread is provided on the bottom end of the drive shaft;

[0015] The stirring assembly is installed outside the driving shaft.

[0016] Furthermore, a through hole is provided in the middle of the top of the supporting plate, a ferrule is fixedly installed on the inner wall of the through hole, a transmission shaft 2 is slidably installed on the inner wall of the ferrule, an internal thread matching the external thread at the bottom end of the drive shaft is provided on the top of the transmission shaft 2, the top of the transmission shaft 2 is threadedly connected to the bottom end of the drive shaft, a transmission groove is provided on the outside of the transmission shaft 2, the transmission groove is shaped like a closed wave, a limit pin is symmetrically fixedly installed on the bottom of the inner wall of the ferrule, and the end of the limit pin is slidably connected to the inner wall of the transmission groove provided on the transmission shaft 2.

[0017] Furthermore, a branch pipe is fixedly installed on the bottom of the sealing cover, and the inner wall of the branch pipe is rotatably and slidingly connected to the outer side of the driving shaft.

[0018] Furthermore, the stirring assembly includes a first stirring member, which is symmetrically fixedly installed on the top of the outer side of the driving shaft, and a second stirring member is symmetrically fixedly installed on the bottom of the outer side of the driving shaft.

[0019] Furthermore, the drive assembly includes a translation drive member, and the output end of the translation drive member is fixedly installed with a transmission shaft 1 through a coupling. The top end of the transmission shaft 1 is rotationally connected to the transmission shaft 2, and the transmission shaft 1 and the transmission shaft 2 limit each other in the axial direction.

[0020] Furthermore, the drive assembly includes a power part, which includes a drive source fixedly installed at the bottom of the control cavity. The output end of the drive source is fixedly connected to a rotating shaft through a coupling. The top end of the rotating shaft is rotatably connected to the bottom end of the supporting plate. A reciprocating thread is provided in the middle of the outer side of the rotating shaft. The outer side of the reciprocating thread is threadedly connected to a connecting plate, and one side of the connecting plate is rotatably connected to the second transmission shaft.

[0021] Compared with the prior art, the utility model provides a natto freeze dryer, which drives the transmission shaft 2 to move back and forth up and down along its own axis through the driving component. The transmission groove opened on the transmission shaft 2 is limited by the pin fixedly installed on the inner wall of the sleeve, so that the transmission shaft 2 rotates while moving up and down, thereby driving the first stirring member and the second stirring member fixedly installed on the outer side of the driving shaft to follow the work. The stirring component squeezes the ice layer from top to bottom and flips the natto from bottom to top, which can make the natto viscosity more evenly distributed, and at the same time stirs the natto, so that the cooling speed of the natto is accelerated and the cooling of the natto is more even. At the same time, the working path of the stirring component is rotational ascent or rotational descent, which can reduce the adhesion of natto lumps and make the cooling of the natto more even. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0024] Figure 2 A first schematic cross-sectional view of a local structure provided in Example 1 of the present utility model;

[0025] Figure 3 A second schematic cross-sectional view of a local structure provided in Example 1 of the present utility model;

[0026] Figure 4 A third schematic cross-sectional view of a local structure provided in Example 1 of the present utility model;

[0027] Figure 5 A fourth schematic cross-sectional view of a partial structure provided in Example 1 of the present utility model;

[0028] Figure 6 The first embodiment of the present invention provides Figure 5 A magnified view of middle A;

[0029] Figure 7 This is a schematic cross-sectional view of the local structure provided in Example 2 of the present utility model.

[0030] Description of reference numerals:

[0031] 1. Freeze dryer; 11. Control chamber; 2. Display controller; 3. Freeze drying box; 31. Load-bearing wall; 32. Sealing cover; 321. Branch pipe; 33. Load-bearing plate; 4. Translational drive member; 41. Transmission shaft 1; 5. Limiting member; 51. Transmission shaft 2; 511. Transmission groove; 52. Card sleeve; 521. Limiting pin; 6. Drive shaft; 61. First stirring member; 62. Second stirring member; 7. Power member; 71. Drive source; 72. Rotating shaft; 721. Reciprocating thread; 73. Connecting plate. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Example 1:

[0034] See also Figures 1-6 A natto freeze dryer includes a freeze dryer 1, a control chamber 11 and a display controller 2 for controlling the working conditions of the freeze dryer 1 are provided on the top of the freeze dryer 1, and further includes:

[0035] A freeze drying box 3 is installed on the top of the freeze dryer 1;

[0036] Freeze-drying box 3 includes:

[0037] The bearing wall 31 is fixedly mounted on the top of the freeze dryer 1 and is also located on the top of the control chamber 11;

[0038] The bearing plate 33 is fixedly mounted in the inner cavity of the bearing wall 31;

[0039] A sealing cover 32 is clamped to the top of the supporting wall 31;

[0040] A drive assembly, which is installed at the bottom of the control chamber 11;

[0041] A limit member 5 is mounted on the top of the driving assembly and is also located below the bearing plate 33;

[0042] The drive shaft 6 is mounted on the top of the stopper 5 and is located in the inner cavity of the bearing wall 31. The bottom end of the drive shaft 6 is provided with a thread.

[0043] The stirring assembly is installed on the outside of the driving shaft 6.

[0044] The specific implementation method is as follows: the freeze dryer 1 is any freeze drying equipment that can realize freeze drying of beans. The freeze dryer is a prior art and will not be described in detail here. The inner wall of the supporting wall 31 is made of smooth material and the outer wall is made of insulation material. The sealing cover 32 isolates the inner cavity of the supporting wall 31 from the outside world. The display controller 2 can control the working speed, working temperature and power on and off of the freeze dryer 1, and can display the working temperature at the same time. This is a prior art and will not be described in detail here.

[0045] A through hole is provided in the middle of the top of the supporting plate 33, and a ferrule 52 is fixedly installed on the inner wall of the through hole. A transmission shaft 2 51 is slidably installed on the inner wall of the ferrule 52. The top of the transmission shaft 2 51 is provided with an internal thread matching the external thread at the bottom end of the drive shaft 6. The top of the transmission shaft 2 51 is threadedly connected to the bottom end of the drive shaft 6. A transmission groove 511 is provided on the outside of the transmission shaft 2 51. The transmission groove 511 is in the shape of a closed wave. A limiting pin 521 is symmetrically fixed on the bottom of the inner wall of the ferrule 52, and the end of the limiting pin 521 is slidably connected to the inner wall of the transmission groove 511 provided on the transmission shaft 2 51.

[0046] The specific implementation is as follows: the driving shaft 6 is threadedly connected to the second transmission shaft 51, the driving shaft 6 drives the second transmission shaft 51 to move, and the second transmission shaft 51 is rotationally connected to the ferrule 52 and is slidingly connected at the same time.

[0047] A branch pipe 321 is fixedly installed at the bottom of the sealing cover 32 , and the inner wall of the branch pipe 321 is rotatably and slidingly connected to the outer side of the driving shaft 6 .

[0048] The specific implementation is as follows: the sealing cover 32 ensures the sealing of the freeze-drying box 3 to prevent moisture and gas leakage during the freeze-drying process. At the same time, the rotating and sliding connection design of the branch pipe 321 and the drive shaft 6 not only ensures the normal rotation of the drive shaft 6, but also avoids friction and wear between the sealing cover 32 and the drive shaft 6.

[0049] The stirring assembly includes a first stirring member 61 , which is symmetrically fixedly mounted on the top of the outer side of the driving shaft 6 , and a second stirring member 62 is symmetrically fixedly mounted on the bottom of the outer side of the driving shaft 6 .

[0050] The specific implementation is as follows: the first stirring member 61 and the second stirring member 62 are arranged vertically to each other in space.

[0051] The driving assembly includes a translation driving member 4, and a transmission shaft 41 is fixedly installed on the output end of the translation driving member 4 through a coupling. The top end of the transmission shaft 41 is rotationally connected to the transmission shaft 2 51, and the transmission shaft 1 41 and the transmission shaft 2 51 are limited to each other in the axial direction.

[0052] The specific embodiment is as follows: the translational drive member 4 includes but is not limited to an electric telescopic rod, which is electrically connected to an external power source and is also controlled by an external PLC programming program. When the translational drive member 4 is activated, its output end drives the transmission shaft 1 41 to perform translational motion. Because the transmission shaft 1 41 and the transmission shaft 2 51 are mutually limited in the axial direction, and the top end of the transmission shaft 2 51 is threadedly connected to the bottom end of the drive shaft 6, the translational motion of the transmission shaft 1 41 is converted into the translational and rotational motion of the drive shaft 6. As the drive shaft 6 rotates, the first stirring member 61 and the second stirring member 62 rotate accordingly, stirring the natto in the freeze-drying box 3. Because the transmission groove 511 on the outer side of the transmission shaft 2 51 is shaped like a closed wave, and the limit pin 521 at the bottom of the inner wall of the ferrule 52 is slidably connected to the inner wall of the transmission groove 511, the transmission shaft 2 51 also reciprocates up and down while rotating. This combined motion method can more effectively stir and flip the natto.

[0053] Example 2:

[0054] See also Figure 7 This embodiment provides a technical solution based on the first embodiment: the drive assembly includes a power member 7, the power member 7 includes a drive source 71 fixedly installed at the bottom of the inner cavity of the control cavity 11, the output end of the drive source 71 is fixedly connected to the rotating shaft 72 through a coupling, the top of the rotating shaft 72 is rotatably connected to the bottom end of the supporting plate 33, a reciprocating thread 721 is provided on the middle part of the outer side of the rotating shaft 72, the outer side of the reciprocating thread 721 is threadedly connected to a connecting plate 73, and one side of the connecting plate 73 is rotatably connected to the transmission shaft 2 51.

[0055] The specific implementation is as follows: the driving source 71 includes but is not limited to a stepper motor, which is electrically connected to an external power supply and is also controlled by an external PLC programming program. When the driving source 71 is started, the rotating shaft 72 is driven to rotate through the coupling, and the rotation of the rotating shaft 72 is transmitted to the connecting plate 73 through the reciprocating thread 721, so that the connecting plate 73 moves up and down on the rotating shaft 72. Since the connecting plate 73 is rotationally connected to the transmission shaft 2 51, the up and down movement of the connecting plate 73 will be converted into the rotation and up and down reciprocating motion of the transmission shaft 2 51. This composite motion mode can more effectively drive the stirring component to stir and flip.

[0056] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A natto freeze dryer, comprising a freeze dryer (1), wherein a control chamber (11) and a display controller (2) for controlling the working conditions of the freeze dryer (1) are provided on the top of the freeze dryer (1), characterized in that: Also includes: A freeze drying box (3) is installed on the top of the freeze dryer (1); The freeze-drying box (3) comprises: A bearing wall (31) is fixedly mounted on the top of the freeze dryer (1) and is also located on the top of the control chamber (11); A bearing plate (33) fixedly mounted in the inner cavity of the bearing wall (31); A sealing cover (32) is clamped on the top of the bearing wall (31); A drive assembly mounted on the bottom of the control chamber (11); A limiting member (5) is mounted on the top of the driving assembly, and the limiting member (5) is also located below the bearing plate (33); A drive shaft (6) is mounted on the top of the limiting member (5), is located in the inner cavity of the bearing wall (31), and has a thread at the bottom end of the drive shaft (6); The stirring assembly is installed outside the driving shaft (6).

2. A natto freeze dryer according to claim 1, characterized in that: A through hole is provided in the middle of the top of the supporting plate (33), a clamping sleeve (52) is fixedly installed on the inner wall of the through hole, a transmission shaft 2 (51) is slidably installed on the inner wall of the clamping sleeve (52), an internal thread matching the external thread at the bottom end of the drive shaft (6) is provided at the top end of the transmission shaft 2 (51), the top end of the transmission shaft 2 (51) is threadedly connected to the bottom end of the drive shaft (6), a transmission groove (511) is provided on the outside of the transmission shaft 2 (51), the transmission groove (511) is shaped like a closed wave, a limiting pin (521) is symmetrically fixedly installed on the bottom of the inner wall of the clamping sleeve (52), and the end of the limiting pin (521) is slidably connected to the inner wall of the transmission groove (511) provided on the transmission shaft 2 (51).

3. The natto freeze dryer according to claim 1, characterized in that: A branch pipe (321) is fixedly mounted on the bottom of the sealing cover (32), and the inner wall of the branch pipe (321) is rotatably and slidably connected to the outer side of the driving shaft (6).

4. The natto freeze dryer according to claim 1, characterized in that: The stirring assembly comprises a first stirring member (61), the first stirring member (61) is symmetrically fixedly mounted on the top of the outer side of the driving shaft (6), and a second stirring member (62) is symmetrically fixedly mounted on the bottom of the outer side of the driving shaft (6).

5. The natto freeze dryer according to claim 2, characterized in that: The driving assembly includes a translation driving member (4), the output end of the translation driving member (4) is fixedly mounted with a transmission shaft 1 (41) via a coupling, the top end of the transmission shaft 1 (41) is rotationally connected to the transmission shaft 2 (51), and the transmission shaft 1 (41) and the transmission shaft 2 (51) are mutually limited in the axial direction.

6. The natto freeze dryer according to claim 2, characterized in that: The driving assembly includes a power member (7), the power member (7) includes a driving source (71) fixedly mounted on the bottom of the inner cavity of the control cavity (11), the output end of the driving source (71) is fixedly connected to a rotating shaft (72) through a coupling, the top end of the rotating shaft (72) is rotatably connected to the bottom end of the bearing plate (33), a reciprocating thread (721) is provided on the middle portion of the outer side of the rotating shaft (72), the outer side of the reciprocating thread (721) is threadedly connected to a connecting plate (73), and one side of the connecting plate (73) is rotatably connected to the second transmission shaft (51).

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