Plate type vacuum drying oven

Abstract

The utility model discloses a plate-type vacuum drying oven, which comprises a main body unit comprising an oven body, an openable and closable oven door arranged on the front side of the oven body, and an emptying component arranged above the oven body and used for exhausting air in the drying oven; the plurality of plate layers are arranged in the box body and are used for placing materials to be dried in a layered manner; the box body is provided with a water inlet pipe and a plurality of water inlet corrugated pipes, the hot water conduction unit is integrated in the box body and comprises a liquid storage container, a circulation driving device and a circulation pipeline assembly communicated with the circulation driving device, and heat transfer media are conveyed into the water inlet pipe through the circulation driving device and enter branch pipes of all layers through the water inlet corrugated pipes respectively; and then the heat transfer medium flows back to the liquid storage container through the water outlet pipe to form a closed circulation loop, so that a plurality of layers of material areas are uniformly heated in a manner of enabling the heat transfer medium to circularly flow through each layer, the phenomenon of local overheating or incomplete drying is solved, and the consistency of product quality is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of vacuum drying technology, and in particular to a plate-type vacuum drying oven. Background Technology

[0002] Vacuum drying technology, a key process for material dehydration, is widely used in pharmaceuticals, food, and chemicals. It lowers the boiling point of materials through a low-pressure environment, allowing moisture to evaporate rapidly at low temperatures. This avoids the damage to heat-sensitive components (such as active pharmaceutical ingredients and food flavor molecules) caused by high temperatures and significantly improves drying efficiency. In the pharmaceutical industry, this technology is used to dry heat-sensitive drugs such as antibiotics and vaccines, ensuring the stability of active ingredients. In the food industry, it is used for the dehydration of fruit and vegetable powders and probiotic preparations to retain nutrients and flavor. The chemical industry relies on it to process high-purity chemicals, preventing oxidation or clumping.

[0003] Vacuum drying ovens are widely used in the field of material dehydration, but traditional multi-layer drying ovens have some shortcomings in heat transfer efficiency. Specifically, existing drying technologies mostly adopt a single heat source heating method, which is fixed on the inner wall of the drying oven located on the side of the material. This method is prone to uneven heating of multiple layers of material. Especially when the material is stacked, the temperature difference between the upper and lower layers is obvious, which can easily lead to local overheating or incomplete drying, seriously affecting the consistency of product quality.

[0004] Therefore, a plate-type vacuum drying oven is needed to solve the above problems. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems of the above-mentioned plate-type vacuum drying oven, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a plate-type vacuum drying oven, which solves the problem that "existing drying technologies mostly use a single heat source for heating, resulting in uneven heating of multiple layers of materials. Especially when materials are stacked, the temperature difference between the upper and lower layers is obvious, which easily leads to local overheating or incomplete drying, seriously affecting the consistency of product quality".

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a plate-type vacuum drying oven, comprising: a main unit, which includes a box body, an openable and closable box door disposed on the front side of the box body, and an venting component disposed on the top of the box body for discharging air from the drying oven.

[0009] The multi-layered panels within the box are used for layering and storing materials to be dried; and,

[0010] The hot water conduction unit integrated into the box includes a liquid storage container, a circulation drive device, and a circulation pipeline assembly connected to the circulation drive device.

[0011] The circulating drive device drives the heat transfer medium to circulate between the circulating pipeline assembly and the liquid storage container, thereby heating and drying the material.

[0012] In a preferred embodiment of the plate-type vacuum drying oven of this utility model, the oven door is hinged to the oven body via a door hinge and fixed by door clamping, and a sealing structure is provided between the oven door and the oven body.

[0013] In a preferred embodiment of the plate-type vacuum drying oven of this utility model, the venting assembly includes a venting pipe, a venting ball valve, an air filter, and an inert gas injection module. One end of the venting pipe is connected to the interior of the oven body. The venting ball valve and the air filter are sequentially installed on the venting pipe. The inert gas injection module is connected to the venting pipe through a branch pipe, on which an inflation valve is installed.

[0014] In a preferred embodiment of the plate-type vacuum drying oven of this utility model, multiple sets of the plate layers are installed on the inner wall of the oven body.

[0015] In a preferred embodiment of the plate-type vacuum drying oven of this utility model, the liquid storage container is located at the bottom of the oven body and has an integrated heating element inside. The circulation drive device is installed inside the oven body, and its input end is connected to the inside of the liquid storage container. The liquid storage container is also provided with a liquid replenishment interface.

[0016] In a preferred embodiment of the plate-type vacuum drying oven of this utility model, the circulation pipeline assembly includes an inlet pipe, an outlet pipe, and branch pipes. Multiple sets of branch pipes are embedded in each plate layer, and their two ends are connected to the inlet pipe and the outlet pipe respectively through an inlet corrugated pipe and an outlet corrugated pipe. The inlet of the inlet pipe is connected to the output end of the circulation drive device, and the outlet of the outlet pipe is connected to the liquid storage container.

[0017] As a preferred embodiment of the plate-type vacuum drying oven of this utility model, the hot water conduction unit further includes multiple water temperature sensors for real-time detection of the temperature of the heat transfer medium in the liquid storage container and the outlet pipe.

[0018] As a preferred embodiment of the plate-type vacuum drying oven of this utility model, the outer side of the oven body integrates a pneumatic cabinet and an explosion-proof cabinet, and the oven body is also provided with a vacuum port for connecting a vacuum pump and an air pipe interface for connecting a pressure transmitter.

[0019] As a preferred embodiment of the plate-type vacuum drying oven of this utility model, an internal temperature sensor is provided inside the oven, and a temperature verification port for viewing the temperature is also provided on one side of the oven.

[0020] The beneficial effects of this utility model are as follows: Through the circulation drive device, the heat transfer medium is transported into the inlet pipe, and then enters the branch pipes of each layer through multiple inlet corrugated pipes. Then, it flows back to the storage container through the outlet pipe, forming a closed circulation loop. Therefore, by circulating the heat transfer medium through each layer, the multi-layer material area is heated evenly, solving the problem of local overheating or incomplete drying, and thus ensuring the consistency of product quality. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 This is a front cross-sectional view of a plate-type vacuum drying oven according to the present invention.

[0023] Figure 2 This is a front view structural diagram of a plate-type vacuum drying oven according to the present invention.

[0024] Figure 3 This is a side sectional view of a plate-type vacuum drying oven according to the present invention.

[0025] Figure 4 This is a side view of the structure of a plate-type vacuum drying oven according to the present invention.

[0026] Figure Descriptions: 100, Main Unit; 101, Cabinet; 102, Cabinet Door; 102a, Door Hinge; 103, Venting Assembly; 103a, Venting Ball Valve; 103b, Air Filter; 103c, Inert Gas Injection Module; 104, Temperature Verification Port; 105, Pneumatic Cabinet; 106, Explosion-proof Cabinet; 107, Vacuum Port; 108, Gas Pipe Interface; 109, Internal Temperature Sensor; 200, Plate Layer; 300, Hot Water Conduction Unit; 301, Liquid Storage Container; 301a, Liquid Replenishment Interface; 302, Circulation Drive Device; 303, Water Inlet Pipe; 303a, Water Inlet; 303b, Water Inlet Corrugated Pipe; 304, Water Outlet Pipe; 304a, Water Outlet; 304b, Water Outlet Corrugated Pipe; 305, Branch Pipe; 306, Water Temperature Sensor. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0030] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0031] Example 1

[0032] Reference Figure 1 and Figure 4 This is the first embodiment of the present invention. This embodiment provides a plate-type vacuum drying oven that can achieve uniform heating of multi-layer materials. It includes: a main unit 100, which includes a box body 101, an openable and closable box door 102 disposed on the front side of the box body 101, and an venting component 103 disposed above the box body 101 for venting air from the drying oven.

[0033] The multi-layered panels 200 located within the housing 101 are used for layering and storing materials to be dried; and,

[0034] The hot water conduction unit 300 integrated in the housing 101 includes a liquid storage container 301, a circulation drive device 302, and a circulation pipeline assembly connected to the circulation drive device 302.

[0035] The circulating drive device 302 drives the heat transfer medium to circulate between the circulating pipeline assembly and the liquid storage container 301 to achieve heating and drying of materials.

[0036] When in use, open the box door 102 and place the materials in layers on the plate 200, and then close the box door 102. During drying, the heat transfer medium is driven by the circulation drive device 302 to circulate between the circulation pipeline assembly and the liquid storage container 301 to achieve uniform heating of each layer of material.

[0037] Example 2

[0038] Reference Figures 1 to 4 This is the second embodiment of the present invention. Unlike the previous embodiment, the box door 102 is hinged to the box body 101 via a door hinge 102a to realize the opening and closing of the box door 102. The box door 102 is fixed by door clamping. A transparent observation window is also provided on the box door 102 for observing the drying status of the material inside the box. A sealing structure is provided between the box door 102 and the box body 101. The sealing of the inside of the box body 101 is achieved by the cooperation of door clamping and sealing mechanism.

[0039] It should be noted that the sealing mechanism can adopt common forms of existing technology. For example, an annular rubber sealing ring can be set on the edge of the door 102 to seal it, or it can be a magnetic seal, or it can use vacuum negative pressure to automatically compress the sealing structure. For those skilled in the art, other existing sealing structures can also be used without creative effort.

[0040] The venting assembly 103 includes a venting pipe, a venting ball valve 103a, an air filter 103b, and an inert gas injection module 103c. One end of the venting pipe is connected to the interior of the housing 101, and the end of the venting pipe inside the housing 101 is also equipped with a flow guide to facilitate the exhaust of air. The venting ball valve 103a and the air filter 103b are installed sequentially on the venting pipe. The air is filtered by the air filter 103b. The inert gas injection module 103c is connected to the venting pipe through a branch pipe, and an inflation valve is installed on the branch pipe. Inert gas, such as nitrogen, is injected into the housing 101 through the inert gas injection module 103c to play a role in fire prevention and explosion prevention.

[0041] Preferably, all the multi-layer boards 200 are installed on the inner wall of the box 101, the multi-layer boards 200 are arranged vertically at equal intervals, and each board 200 can be provided with a baking tray for holding materials.

[0042] The liquid storage container 301 is located at the bottom of the box 101 and contains a heat transfer medium (such as water or aqueous solution). It has an integrated heating element for heating the heat transfer medium. The circulation drive device 302 is installed inside the box 101 and its input end is connected to the inside of the liquid storage container 301. The liquid storage container 301 is also provided with a liquid replenishment interface 301a, through which the heat transfer medium is replenished.

[0043] Preferably, the liquid storage container can be a water tank with a volume of 500L; the heating element can be a 3KW titanium alloy electric heating tube; and the circulation drive device 302 can be a high-temperature resistant magnetic pump (flow rate 12m³ / h). 3 / h, head 20m), and all of them are existing commonly used equipment, so their specific circuit structures will not be described in detail.

[0044] The circulation pipeline assembly includes an inlet pipe 303, an outlet pipe 304, and branch pipes 305. Multiple branch pipes 305 are embedded in each layer 200, preferably in a serpentine, evenly distributed manner. Both ends of the branch pipes 305 are connected to the inlet pipe 303 and the outlet pipe 304 respectively through an inlet corrugated pipe 303b and an outlet corrugated pipe 304b. The connectors are quick-connect, and the sealing method is PTFE sealing rings. The heat transfer medium flows in a low-inlet, high-outlet direction. The inlet 303a of the inlet pipe 303 is connected to the output end of the circulation drive device 302, and the outlet 304a of the outlet pipe 304 is connected to the liquid storage container 301.

[0045] During heating and drying, the circulation drive device 302 is activated to deliver the heat transfer medium into the inlet pipe 303. After passing through multiple inlet corrugated pipes 303b, the medium enters the branch pipes 305 of each layer and then flows back to the storage container 301 through the outlet pipe 304, forming a closed circulation loop. Therefore, by circulating the heat transfer medium through each layer, the multi-layer material area is heated evenly, solving the problem of local overheating or incomplete drying, and thus ensuring the consistency of product quality.

[0046] Example 3

[0047] Reference Figure 4 This is the third embodiment of the present invention. Unlike the previous embodiment, the hot water conduction unit 300 also includes multiple water temperature sensors 306, which are used to detect the temperature of the heat transfer medium in the liquid storage container 301 and the outlet pipe 304 in real time.

[0048] It should be noted that a PT100 temperature sensor (range 0-150℃, accuracy ±0.5℃) is installed on the liquid storage container 301, and a miniature temperature sensor with dimensions Φ6mm×30mm is installed at the outlet end of the water outlet pipe 304.

[0049] Furthermore, the outer side of the enclosure 101 integrates a pneumatic cabinet 105 and an explosion-proof cabinet 106. The enclosure 101 is also equipped with a vacuum port 107 for connecting a vacuum pump and an air pipe interface 108 for connecting a pressure transmitter.

[0050] It should be noted that the pneumatic cabinet 105 has a built-in pneumatic control system for controlling the vacuum state inside the cabinet and the injection of inert gas, and the explosion-proof cabinet 106 has built-in explosion-proof electrical components for controlling the start and stop of the device. All of these are existing mature technologies and equipment, and their specific composition and structure will not be described in detail.

[0051] Furthermore, an internal temperature sensor 109 is installed inside the enclosure 101, and a temperature verification port 104 for viewing the temperature is also provided on one side of the enclosure 101.

[0052] It should be noted that the temperature sensor 109 inside the chamber is an infrared sensor. When an abnormal temperature is detected inside the chamber, it works with electrical components to stop the circulation drive device 302 from working, preventing the material from overheating and being damaged.

[0053] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A plate-type vacuum drying oven, characterized by, include: The main unit (100) includes a box (101), an openable and closable box door (102) disposed on the front side of the box (101), and an air venting assembly (103) disposed above the box (101) for venting air from the drying box. The multi-layered panels (200) disposed within the housing (101) are used for layering and storing materials to be dried; and, The hot water conduction unit (300) integrated in the housing (101) includes a liquid storage container (301), a circulation drive device (302), and a circulation pipeline assembly connected to the circulation drive device (302). The circulating drive device (302) drives the heat transfer medium to circulate between the circulating pipeline assembly and the liquid storage container (301) to achieve heating and drying of the material.

2. The plate-type vacuum drying oven according to claim 1, characterized in that: The door (102) is hinged to the box body (101) via a door hinge (102a) and is fixed by door clamping. A sealing structure is provided between the door (102) and the box body (101).

3. The tray-type vacuum drying oven according to claim 1, characterized in that: The venting assembly (103) includes a venting pipe, a venting ball valve (103a), an air filter (103b), and an inert gas injection module (103c). One end of the venting pipe is connected to the inside of the housing (101). The venting ball valve (103a) and the air filter (103b) are installed sequentially on the venting pipe. The inert gas injection module (103c) is connected to the venting pipe through a branch pipe, and an inflation valve is installed on its branch pipe.

4. The tray-type vacuum drying oven according to claim 1, characterized by: All the multi-layer plates (200) are installed on the inner wall of the housing (101).

5. The plate-type vacuum drying oven according to claim 1, characterized in that: The liquid storage container (301) is located in the bottom area of ​​the box (101) and has a heating element integrated inside. The circulation drive device (302) is installed inside the box (101) and its input end is connected to the inside of the liquid storage container (301). The liquid storage container (301) is also provided with a liquid replenishment interface (301a).

6. The tray-type vacuum drying oven according to claim 1, characterized in that: The circulation pipeline assembly includes an inlet pipe (303), an outlet pipe (304), and branch pipes (305). Multiple sets of branch pipes (305) are embedded in each layer (200), and their two ends are connected to the inlet pipe (303) and the outlet pipe (304) respectively through an inlet corrugated pipe (303b) and an outlet corrugated pipe (304b). The inlet (303a) of the inlet pipe (303) is connected to the output end of the circulation drive device (302), and the outlet (304a) of the outlet pipe (304) is connected to the liquid storage container (301).

7. The tray-type vacuum drying oven according to claim 1, characterized in that: The hot water conduction unit (300) also includes multiple water temperature sensors (306) for real-time detection of the temperature of the heat transfer medium in the liquid storage container (301) and the outlet pipe (304).

8. The tray-type vacuum drying oven according to claim 1, characterized in that: The outer side of the enclosure (101) is equipped with a pneumatic cabinet (105) and an explosion-proof cabinet (106). The enclosure (101) is also provided with a vacuum port (107) for connecting a vacuum pump and an air pipe interface (108) for connecting a pressure transmitter.

9. The tray-type vacuum drying oven according to claim 1, characterized in that: The box (101) is provided with an in-box temperature sensor (109), and one side of the box (101) is also provided with a temperature verification port (104) for checking the temperature.

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