Dendrobium nobile vacuum drying box

Abstract

The utility model relates to the technical field of vacuum drying, and discloses a dendrobe vacuum drying box which comprises a box body, a storage tray, a vacuumizing assembly, a nitrogen injection assembly, a condensation recovery assembly and a heating part. The box body is provided with a box door, the box door is used for sealing a drying cavity of the box body, the storage tray is arranged in the box body, one end of the vacuumizing assembly is communicated with the drying cavity of the box body, one end of the nitrogen injection assembly is communicated with the drying cavity of the box body, one end of the condensation recovery assembly is communicated with the drying cavity of the box body, and the heating component is arranged in the box body. Through the design of the vacuumizing assembly and the condensation recovery assembly, air and water vapor in the box body can be rapidly and effectively pumped out, a vacuum environment is formed, and the drying efficiency is improved. And through the design of the nitrogen injection assembly, nitrogen can be injected into the box body in the drying process, a protection layer is formed, effective components in the dendrobium nobile are prevented from being oxidized, and the medicinal value of the dendrobium nobile is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum drying technical field, concretely relates to a dendrobium vacuum drying box. BACKGROUND

[0002] Dendrobium is a kind of precious Chinese medicinal material, has multiple medicinal values.In the processing of dendrobium, drying is an important link.The traditional drying method such as airing, drying etc., not only low efficiency, but also can easily destroy the effective component in dendrobium, influence its medicinal value.In addition, the traditional drying method also has the problems such as uneven drying, easily affected by external environment etc.

[0003] Chinese utility model patent (application number: 2021212955131) discloses a kind of dendrobium freeze-drying device, including machine body, machine body is equipped with preheating cavity, freezing cavity and drying cavity respectively, the two sides of preheating cavity are communicated with hot air box, microwave generator is installed in the two sides inner wall of drying cavity, drying cavity is connected with vacuum equipment through vacuum pipe, the two sides of freezing cavity are communicated with cold air tank, two cold air tanks are connected by cold air circulation pipe, preheating cavity, freezing cavity and drying cavity are all equipped with several parallel heat exchange plates, material tray is placed on heat exchange plate, three independent box doors are installed respectively in the side of machine body at preheating cavity, freezing cavity and drying cavity;The utility model is preheated and dried to dendrobium by preheating cavity, removes dendrobium surface moisture, after cooling, place in freezing cavity freezing, and place the frozen dendrobium in drying cavity vacuum drying, can effectively avoid dendrobium frostbite, improve dendrobium quality, and utilize heat exchange plate to improve the heating uniformity of material tray, guarantee the drying uniformity of same batch dendrobium.But this drying mode needs to be transferred back and forth between three chambers, operation is complex, and production efficiency is low. SUMMARY

[0004] In order to solve the problems existing in the prior art, the utility model aims at providing a kind of dendrobium vacuum drying box.

[0005] The utility model discloses a kind of dendrobium vacuum drying box, including:

[0006] Box, it has box door, the box door is used to close the drying cavity of the box body;

[0007] Material tray, the material tray is set in the box body, and the material tray is used to place dendrobium;

[0008] Vacuumizing component, one end of the vacuumizing component is communicated with the drying cavity of the box body, for the vacuumizing drying cavity of the box body;

[0009] Nitrogen injection component, one end of the nitrogen injection component is communicated with the drying cavity of the box body, for the nitrogen injection drying cavity of the box body;

[0010] A condensing recovery assembly is communicated with the drying cavity of the box body at one end, used for absorbing and condensing the steam generated in the heating process of the dendrobium.

[0011] A heating component is arranged in the box body, used for drying the dendrobium.

[0012] Preferably, a plurality of the shelves are arranged in the box body, and each of the shelves is provided with guide rails on both sides, and the side wall of the box body is provided with sliding grooves matched with the guide rails, and each of the shelves is uniformly provided with a plurality of air holes.

[0013] Preferably, the positioning member comprises a male positioning component and a female positioning component, and the male positioning component and the female positioning component are arranged in the guide rail and the sliding groove, respectively.

[0014] Preferably, the vacuum assembly comprises a vacuum pump and a vacuum pipeline, one end of the vacuum pipeline penetrates the bottom of the box body and is communicated with the drying cavity, and the other end is connected with the vacuum pump.

[0015] Preferably, the vacuum pipeline is provided with a filter screen plate at the connection position with the box body.

[0016] Preferably, the nitrogen injection assembly comprises a nitrogen pipeline, a nitrogen cylinder and a solenoid valve, one end of the nitrogen pipeline penetrates the box body and is communicated with the drying cavity, the other end is communicated with the nitrogen cylinder, and the solenoid valve is arranged on the nitrogen pipeline.

[0017] Preferably, the nitrogen pipeline comprises a main nitrogen pipeline and a plurality of nitrogen branch pipelines communicated with each other, the main nitrogen pipeline is communicated with the nitrogen cylinder, and one end of each of the nitrogen branch pipelines away from the main nitrogen pipeline penetrates the side and / or top of the box body at equal intervals and is communicated with the drying cavity, and the solenoid valve is arranged on each of the nitrogen branch pipelines.

[0018] Preferably, the condensing recovery assembly comprises a condensing pipeline, a condenser and a collection tank, one end of the condensing pipeline penetrates the side of the box body and is communicated with the containing cavity, and the other end is sequentially communicated with the condenser and the collection tank.

[0019] Preferably, a plurality of pressure sensors, a plurality of temperature sensors and a plurality of humidity sensors are arranged in the box body, and a control panel is arranged on the outside of the box body and is electrically connected with the plurality of pressure sensors, the plurality of temperature sensors, the plurality of humidity sensors, the vacuum assembly, the nitrogen injection assembly, the condensing recovery assembly and the heating component, respectively.

[0020] Preferably, an observation window is arranged on the box door.

[0021] The dendrobium vacuum drying box has the advantages that the air and water vapor in the box body can be quickly and effectively extracted to form a vacuum environment and improve the drying efficiency through the design of the vacuum extraction assembly and the condensation recovery assembly; nitrogen can be injected into the box body to form a protective layer and prevent the effective components in the dendrobium from being oxidized, thereby ensuring the medicinal value of the dendrobium, and the drying efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the dendrobium vacuum drying box of the utility model;

[0023] Figure 2 is a top view of the box body of the dendrobium vacuum drying box of the utility model;

[0024] Figure 3 is a structure schematic view of the object placing disc of the dendrobium vacuum drying box of the utility model;

[0025] Figure 4 is a schematic view of the internal structure of the box body of the dendrobium vacuum drying box of the utility model;

[0026] Figure 5 is a schematic view of the internal structure of the box body of the dendrobium vacuum drying box of the utility model (without the object placing disc).

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 1 box body, 11 box door, 12 sliding groove, 13 observation window, 14 lighting lamp strip, 15 handle, 16 moving wheel;

[0029] 2 object placing disc, 201 air vent, 21 guide rail, 22 handle, 23 sub-positioning part, 24 female positioning part;

[0030] 3 vacuum extraction assembly, 31 vacuum pump, 32 vacuum pipeline, 33 filter screen plate;

[0031] 4 nitrogen injection assembly, 41 nitrogen pipeline, 411 main nitrogen pipeline, 412 branch nitrogen pipeline, 42 nitrogen cylinder, 43 electromagnetic valve;

[0032] 5 condensation recovery assembly, 51 condensation pipeline, 52 condenser, 53 collection tank.

[0033] 6 heating part. DETAILED DESCRIPTION

[0034] As Figures 1-5As shown, the daffodil vacuum drying box disclosed by the embodiment comprises a box body 1, a placing tray 2, a vacuum pumping assembly 3, a nitrogen injection assembly 4, a condensation recovery assembly 5 and a heating component 6. The box body 1 is provided with a box door 11 for closing the drying cavity of the box body 1. The placing tray 2 is arranged in the box body 1 and used for placing the daffodil. One end of the vacuum pumping assembly 3 is communicated with the drying cavity of the box body 1 and used for pumping the drying cavity of the box body 1. One end of the nitrogen injection assembly 4 is communicated with the drying cavity of the box body 1 and used for injecting nitrogen into the drying cavity of the box body 1. One end of the condensation recovery assembly 5 is communicated with the drying cavity of the box body 1 and used for absorbing the steam generated in the heating process of the daffodil and recovering the steam by condensation. The heating component 6 is arranged in the box body 1 and used for drying the daffodil.

[0035] In the specific drying process, the daffodil is first laid flat on the placing tray 2, and then the placing tray 2 is sent into the box body 1. Then, the box door 11 of the box body 1 is closed, and the vacuum pumping assembly 3 is started to pump out the air in the box body 1 to form a vacuum environment. At this time, the inside of the box body 1 is in a negative pressure state. In the negative pressure state, the boiling point of water is reduced to 50-60℃, which is beneficial to evaporation, reduces the heating power and further reduces the energy consumption, and also shortens the drying time and improves the production efficiency. Then, the nitrogen injection assembly 4 is used to inject nitrogen into the box body 1 to form a protective layer to protect the effective components in the daffodil from being oxidized, thereby improving the qualified rate of the finished product. In the drying process, the water vapor in the box body 1 is recovered by the condensation recovery assembly 5 and condensed into water for recycling. In this way, the daffodil can be quickly and effectively dried, and the effective components in the daffodil are protected from being oxidized, thereby ensuring the medicinal value of the daffodil.

[0036] Please refer to Figure 1 and Figure 2The box body 1 is made of 304 stainless steel, which is more durable. The inner side wall of the box body 1 is provided with a heat preservation layer to prevent heat from flowing out and reduce heat loss. In addition, the bottom of the box body 1 is provided with moving wheels 16 to facilitate the movement of the drying box and improve the flexibility of the device. The box door 11 is connected to the box body 1 by hinges or hinges, and a sealing ring is provided at the connection between the box door 11 and the box body 1 to ensure the sealing of the box body 1. The side of the box door 11 away from the box body 1 is provided with a handle 15 to facilitate opening and closing the door. In addition, the box door 11 is also provided with an observation window 13 made of transparent material to facilitate observation of the drying condition of the dendrobium in the box. The observation window 13 can be made of materials such as high-temperature-resistant quartz glass or polycarbonate to ensure that the operator can clearly observe the drying condition of the dendrobium in the box. The observation window 13 and the box door 11 are sealed with sealing strips and sealing rings to ensure the airtightness of the box body 1 and prevent external air from entering to affect the drying effect. A lighting strip 14 is also installed near the observation window 13 to facilitate observation of the inside of the box in a dark environment. The lighting strip 14 is operated by the control panel and is independently controlled with the power supply of the drying box. The lighting strip 14 can be an LED strip arranged along the periphery of the observation window 13.

[0037] Please refer to Figures 3-5 The plurality of storage trays 2 are arranged in the box body 1, and the distance between adjacent storage trays 2 can be adjusted to accommodate different sizes of dendrobium. Specifically, the storage trays 2 in this embodiment are arranged in four, dividing the drying box of the box body 1 into five interconnected drying spaces. The pull-out design can be arranged as follows: each storage tray 2 is provided with guide rails 21 on both sides, and the side wall of the box body 1 is provided with sliding grooves 12 matched with the guide rails 21, so that the pull-out operation is realized through the cooperation of the guide rails 21 and the sliding grooves 12, which is simple and easy to operate, and ensures that the storage tray 2 can be pulled out smoothly. The sliding rails 21 are made of high-strength aluminum alloy material, which is wear-resistant and corrosion-resistant. Each storage tray 2 is uniformly provided with a plurality of air holes 201 for air circulation and heat transfer to improve drying efficiency. In addition, each storage tray 2 is provided with a handle 23 at the front end for easy operation by the operator. The handle 23 is designed to be slip-resistant to ensure safe operation.

[0038] Preferably, it also includes a positioning member, which includes a male positioning component 23 and a female positioning component 24, and the male and female positioning components 23 and 24 are arranged in the guide rails 21 and the sliding grooves 12 respectively. The male and female positioning components can be designed in the form of male and female buckles, magnetic attraction, etc. In this embodiment, the male and female positioning components are two magnets with opposite magnetic properties. It can also be a combination of an electromagnet and a metal block, and the on-off control of the electromagnet is controlled by the control panel. The positioning member can quickly and accurately position the storage tray 2 to ensure the stability of the drying process.

[0039] Please continue to refer to Figure 1 , the vacuum assembly 3 comprises a vacuum pump 31 and a vacuum pipe 32, one end of the vacuum pipe 32 penetrates through the bottom of the box body 1 and communicates with the drying cavity, and the other end is connected with the vacuum pump 31. When the vacuum operation is needed, the vacuum pump 31 is started, and the vacuum pump 31 draws the air inside the box body 1 through the vacuum pipe 32, so that the vacuum environment is formed inside the box body 1.

[0040] Preferably, a filter screen plate 33 is arranged at the connection between the vacuum pipe 32 and the box body 1, which can filter out the sundries in the box body 1, prevent the sundries from entering the vacuum pipe 32 to cause the blockage of the vacuum pump 31, and improve the working efficiency of the vacuum pump 32. Specifically, the vacuum pump 32 can be a rotary vane vacuum pump, which has high air pumping efficiency.

[0041] Preferably, the nitrogen injection assembly 4 comprises a nitrogen pipe 41, a nitrogen cylinder 42 and an electromagnetic valve 43, one end of the nitrogen pipe 41 penetrates into the box body 1 and communicates with the drying cavity, the other end communicates with the nitrogen cylinder 42, and the electromagnetic valve 43 is arranged on the nitrogen pipe 41. When it is needed to inject nitrogen into the box body 1, the electromagnetic valve 43 is opened, and the nitrogen in the nitrogen cylinder 42 is injected into the box body 1 through the nitrogen pipe 41, so as to protect the dendrobium, avoid oxidation and ensure the medicinal property of the dendrobium.

[0042] Preferably, the nitrogen pipe 41 comprises a nitrogen main pipe 411 and a plurality of nitrogen branch pipes 412 which are in communication with each other, the nitrogen main pipe 411 communicates with the nitrogen cylinder 42, and the plurality of nitrogen branch pipes 412 penetrate through the side and / or top of the box body 1 at equal intervals and communicate with the drying cavity, and the electromagnetic valve 43 is arranged on each nitrogen branch pipe 412. In the embodiment, the nitrogen branch pipe 412 is provided with five, and the five nitrogen branch pipes 412 correspond to the five drying spaces in the box body 1 respectively, so as to ensure that the dendrobium on each layer of the placing disc 2 can be fully contacted with the nitrogen.

[0043] Preferably, the condensation and recovery assembly 5 comprises a condensation pipe 51, a condenser 52 and a collection tank 53, one end of the condensation pipe 51 penetrates through the side of the box body 1 and communicates with the containing cavity, and the other end sequentially communicates with the condenser 52 and the collection tank 53. The water vapor generated during the drying process enters the condenser 52 through the condensation pipe 51, and then the condensed water vapor enters the collection tank 53 for recycling and reuse, avoiding resource waste.

[0044] The heating component 6 in this embodiment is selected as a far-infrared heating plate. The far-infrared heating plate directly acts on the surface of the dendrobium through infrared radiation, and the energy transfer is rapid. The surface temperature of the dendrobium can be raised in a short time, and the heating speed is faster than the traditional conduction and convection heating methods. Moreover, the far-infrared heating plate heats the surface of the dendrobium very quickly and uniformly, and does not cause a large change in the temperature of the material body. It can avoid the damage of the dendrobium due to local overheating, and save energy at the same time. Infrared rays have a certain penetration ability and can penetrate to a certain extent inside the dendrobium, realizing simultaneous heating inside and outside and improving the comprehensiveness and uniformity of heating.

[0045] Preferably, a plurality of pressure sensors, a plurality of temperature sensors and a plurality of humidity sensors are arranged in the box 1, and a control panel is arranged on the outer side of the box 1, and the control panel is electrically connected with the plurality of pressure sensors, the plurality of temperature sensors, the plurality of humidity sensors, the vacuum pumping assembly 3, the nitrogen injection assembly 4, the condensation recovery assembly 5 and the heating component 6. The pressure sensor, the temperature sensor and the humidity sensor are respectively used for monitoring the pressure, the temperature and the humidity in each layer of the drying space. The control method of each structure of the control panel is as follows:

[0046] (1) Control the operation of the vacuum pump 31

[0047] Start the vacuum pump 31: the operator selects the start option of the vacuum pump 31 on the control panel, and the control panel sends a start signal to the vacuum pump 31. After the vacuum pump is started, it begins to pump the air in the box 1 to form a vacuum environment. The control panel can monitor the running state of the vacuum pump 31, such as current, temperature and other parameters, to ensure its normal operation.

[0048] Stop the vacuum pump 31: when the preset vacuum degree or drying time is reached, the control panel sends a stop signal to the vacuum pump 31, and the vacuum pump 31 stops running. At the same time, the control panel can record the running time and stop time of the vacuum pump 31 for subsequent maintenance and management.

[0049] (2) Control the operation of the nitrogen cylinder 42

[0050] Open the valve of the nitrogen cylinder 42: the operator sets the parameters of nitrogen injection on the control panel, such as nitrogen flow, pressure, etc. The control panel sends an opening signal to the electromagnetic valve 43 of the nitrogen cylinder 42 according to the set parameters, and starts to inject nitrogen into the box 1.

[0051] Adjust the nitrogen flow and pressure: the control panel connects with the nitrogen flow meter and pressure sensor to monitor the flow and pressure of nitrogen in real time. If the actual value does not match the set value, the control panel will automatically adjust the opening degree of the electromagnetic valve to ensure that the flow and pressure of nitrogen are stable within the set range.

[0052] Closing nitrogen cylinder valve 42: When the preset nitrogen injection time is reached or the nitrogen pressure inside the chamber reaches the set value, the control panel sends a closing signal to solenoid valve 43 to stop nitrogen injection. Simultaneously, the control panel records the amount of nitrogen used and the injection time for subsequent statistics and analysis.

[0053] (3) Control the operation of condenser 52

[0054] Condenser 52 Startup: The control panel automatically starts condenser 52 based on the preset condensation temperature or vacuum level. After starting, condenser 52 begins condensing water vapor inside housing 1. The control panel can monitor the operating status of condenser 52, such as cooling water flow rate and temperature, to ensure effective condensation.

[0055] Adjusting condenser parameters: During the condensation process, the control panel automatically adjusts the condenser's operating parameters, such as the flow rate and temperature of cooling water, based on real-time monitored parameters, such as the temperature and humidity inside the enclosure 1, to optimize the condensation effect.

[0056] Condenser 52 Stop: When the drying process ends or the preset stop conditions are reached, the control panel sends a stop signal to condenser 52, and condenser 52 stops operating. Simultaneously, the control panel records the condenser's running and stopping times for subsequent maintenance and management.

[0057] (4) Control the operation of heating component 6

[0058] Starting heating element 6: The operator sets the starting parameters of heating element 6 on the control panel, such as target temperature and heating time. After receiving these parameters, the control panel sends a start signal to heating element 6, and heating element 6 begins to work.

[0059] Adjusting heating power: The control panel maintains a stable temperature inside the chamber 1 by adjusting the power of the heating element 6 based on the set temperature and real-time monitored temperature data. For example, when the temperature inside the chamber is lower than the set value, the control panel increases the power of the heating element 6; when the temperature reaches or exceeds the set value, the control panel decreases the power of the heating element 6.

[0060] Stop heating component: When the preset heating time is reached or the temperature inside the chamber 1 reaches the set maximum limit, the control panel sends a stop signal to the heating component 6, and the heating component 6 stops operating.

[0061] In summary, the Dendrobium vacuum drying oven has the advantages that: through the design of the vacuum extraction assembly 3 and the condensation recovery assembly 5, the air and water vapor in the box can be quickly and effectively extracted to form a vacuum environment, improving the drying efficiency; through the design of the nitrogen injection assembly 4, nitrogen can be injected into the box 1 during the drying process to form a protective layer, preventing the effective components in the Dendrobium from being oxidized, ensuring the medicinal value of the Dendrobium, and without the need to take out the placing disc 2 back and forth for drying, the operation is more convenient, and the drying efficiency is greatly improved.

[0062] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the device or element indicated must have a specific orientation or be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the protection scope of the present application.

[0063] For those skilled in the art, according to the above described technical solutions and concepts, other various corresponding changes and deformations can be made, and all these changes and deformations should belong to the protection scope of the present application.

Claims

1. A vacuum drying oven for Dendrobium, characterized in that, include: A box body having a door for sealing the drying chamber of the box body; A storage tray, which is disposed inside the box, is used to hold Dendrobium. A vacuum assembly, one end of which is connected to the drying chamber of the box, is used to evacuate the drying chamber of the box. A nitrogen injection assembly, one end of which is connected to the drying chamber of the housing, is used to inject nitrogen into the drying chamber of the housing. A condensation recovery component, one end of which is connected to the drying chamber of the box, is used to absorb and condense the steam generated during the heating process of the Dendrobium. A heating element, disposed inside the chamber, is used to dry the Dendrobium.

2. The Dendrobium vacuum drying oven according to claim 1, characterized in that, The storage tray is provided in multiple ways, and the multiple storage trays are spaced apart in the box. Each storage tray is provided with guide rails on both sides. The side wall of the box is provided with sliding grooves that are adapted to the guide rails. Each storage tray is provided with several ventilation holes evenly.

3. The Dendrobium vacuum drying oven according to claim 2, characterized in that, It also includes a positioning component, which includes a sub-positioning component and a female positioning component, the sub-positioning component and the female positioning component being respectively disposed in the guide rail and the slide groove.

4. The Dendrobium vacuum drying oven according to claim 1, characterized in that, The vacuum assembly includes a vacuum pump and a vacuum pipe. One end of the vacuum pipe passes through the bottom of the housing and communicates with the drying chamber, while the other end is connected to the vacuum pump.

5. The Dendrobium vacuum drying oven according to claim 4, characterized in that, A filter screen is installed at the connection between the vacuum pipe and the housing.

6. The Dendrobium vacuum drying oven according to claim 1, characterized in that, The nitrogen injection assembly includes a nitrogen pipeline, a nitrogen cylinder, and a solenoid valve. One end of the nitrogen pipeline passes through the housing and communicates with the drying chamber, while the other end communicates with the nitrogen cylinder. The solenoid valve is mounted on the nitrogen pipeline.

7. The Dendrobium vacuum drying oven according to claim 6, characterized in that, The nitrogen pipeline includes a main nitrogen pipe and multiple interconnected nitrogen branch pipes. The main nitrogen pipe is connected to the nitrogen cylinder. The multiple nitrogen branch pipes pass through the side and / or top of the box body at equal intervals from the end away from the main nitrogen pipe and are connected to the drying chamber. Each nitrogen branch pipe is equipped with a corresponding solenoid valve.

8. The Dendrobium vacuum drying oven according to claim 1, characterized in that, The condensation recovery assembly includes a condensation pipe, a condenser, and a collection tank. One end of the condensation pipe passes through the side of the housing and communicates with the drying chamber, while the other end is connected to the condenser and the collection tank in sequence.

9. The Dendrobium vacuum drying oven according to any one of claims 1-8, characterized in that, The chamber contains multiple pressure sensors, multiple temperature sensors, and multiple humidity sensors. A control panel is located on the outside of the chamber. The control panel is electrically connected to the multiple pressure sensors, multiple temperature sensors, multiple humidity sensors, a vacuum pumping assembly, a nitrogen injection assembly, a condensation recovery assembly, and a heating component.

10. The Dendrobium vacuum drying oven according to any one of claims 1-8, characterized in that, An observation window is provided on the door of the box.

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