Integrated explosion-proof vacuum drying oven
By integrating heating components and a vacuum system, the problem of explosion-proof vacuum drying ovens lacking integrated internal heating and vacuum functions has been solved, realizing both internal heating and vacuuming capabilities, reducing overall construction costs, and making it suitable for small and medium-sized enterprises.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING FEILONG PHARM EQUIP CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-26
AI Technical Summary
Existing explosion-proof vacuum drying ovens do not have integrated internal heating and vacuum functions, resulting in high overall construction costs and making them unsuitable for use by small and medium-sized enterprises.
An integrated explosion-proof vacuum drying oven was designed, which integrates heating components and a vacuum system, including hollow tube rack, drying tray rack, material drying tray, sealed door, observation window, inert gas injection port, water inlet pipe, return pipe, water storage tank, electric heating coil, etc., realizing internal heating and vacuum functions.
It features internal heating, easy trolley movement, and internal vacuuming, which reduces overall construction costs and makes it suitable for small and medium-sized enterprises.
Smart Images
Figure CN224415537U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, specifically an integrated explosion-proof vacuum drying oven. Background Technology
[0002] Explosion-proof vacuum drying ovens are designed specifically for drying heat-sensitive, easily decomposed, and easily oxidized substances. During operation, they can maintain a certain degree of vacuum inside the chamber and can be filled with inert gas. They are particularly suitable for the rapid drying of complex materials and have wide applications in the chemical and pharmaceutical industries.
[0003] Most explosion-proof vacuum drying ovens currently on the market are similar in overall structure, with a steel outer shell as the main body, an insulated inner liner, and a sealed door. They are equipped with drying trays on a trolley frame and require users to provide heating and vacuum systems for operation. The overall construction cost is relatively high, and many users, especially small and medium-sized enterprises, do not have the necessary conditions for this, and do not have the integrated internal heating and vacuum functions.
[0004] Now, a novel integrated explosion-proof vacuum drying oven is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide an integrated explosion-proof vacuum drying oven to solve the problem mentioned in the background art of not having integrated internal heating and vacuum functions.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated explosion-proof vacuum drying oven, comprising an outer shell, an insulated inner shell fixedly connected to the bottom of the inner shell, an inner cavity provided inside the insulated inner shell, a sealing door hinged to the front end of the outer shell, a vacuum gauge fixedly connected to the top of the front end of the sealing door, an observation window fixedly connected to the middle position of the front end of the sealing door, a PLC controller fixedly connected to the top of the left front end of the outer shell, an oil level gauge provided on the left side of the front end of the outer shell, a liquid level gauge provided on the right side of the front end of the outer shell, a vacuum pump installed on the right side of the top of the insulated inner shell, an exhaust pipe fixedly connected to the rear end of the insulated inner shell, a solenoid valve installed on the top of the exhaust pipe, a vacuum suction pipe fixedly connected between the solenoid valve and the vacuum pump, an air venting breather installed on the left side of the insulated inner shell, and a heating component for easy heating provided inside the inner cavity.
[0007] The heating assembly includes a hollow tube coil frame, which is disposed inside the inner cavity. Multiple sets of drying tray supports are horizontally fixed between the two sides inside the hollow tube coil frame. Material drying trays are horizontally placed on the top of the drying tray supports. An inert gas injection port is fixedly connected to the bottom of the inner cavity. A water storage tank is fixedly connected to the left side of the top of the insulated inner shell. An electric heating coil is fixedly connected to the rear end of the water storage tank. A water pump is installed at the rear end of the top of the insulated inner shell. A water outlet pipe is fixedly connected between the water storage tank and the water pump. A water inlet pipe is fixedly connected between the hollow tube coil frame and the water pump. A return pipe is fixedly connected between the hollow tube coil frame and the water storage tank. A water outlet pipe is fixedly connected to the top right side of the water storage tank.
[0008] As a further technical solution of this utility model, the hollow tube tray frame, the water inlet pipe, and the return pipe are internally connected, and the drying tray support is arranged at equal intervals.
[0009] As a further technical solution of this utility model, the inner cavity and the inert gas injection port are connected internally, and the water inlet pipe and the return pipe penetrate the interior of the heat-insulating inner shell.
[0010] As a further technical solution of this utility model, the electric heating coil passes through the rear end of the water storage tank and extends into it. The water storage tank and the oil level gauge are internally connected. The electric heating coil, the water pump, and the PLC controller are electrically connected.
[0011] As a further technical solution of this utility model, slide rails are fixedly connected to both sides of the bottom of the inner cavity, and pulleys are installed at the four corners of the bottom of the hollow tube plate frame. The shape and size of the pulleys and slide rails are compatible, and the pulleys can slide back and forth along the top of the slide rails.
[0012] As a further technical solution of this utility model, the inner heat-insulating shell and the solenoid valve are internally connected, and the PLC controller, the solenoid valve and the vacuum pump are electrically connected.
[0013] Compared with the prior art, the beneficial effects of this utility model are: the integrated explosion-proof vacuum drying oven not only realizes the function of internal heating, but also realizes the function of easy movement of the trolley, and also realizes the function of internal vacuuming;
[0014] (1) By setting up a hollow tube tray frame, a drying tray support, a material drying tray, a sealed door, an observation window, a vacuum gauge, an inert gas injection port, a water inlet pipe, a return pipe, a water storage tank, an electric heating coil, a water outlet pipe and a water pump, when in use, the material to be dried is spread flat inside the material drying tray, and the material drying tray is placed horizontally on the drying tray support. As the inside of the heat-insulating inner shell is evacuated, inert gas is injected from the inert gas injection port. At the same time, the electric heating coil heats the water in the water storage tank, and the water pump pumps the hot water in the water storage tank into the hollow tube tray frame along the water inlet pipe. The hot water circulates along the inside of the hollow tube tray frame and then flows back to the water storage tank through the return pipe. The temperature inside the inner cavity rises, and the material inside the material drying tray is dried, thus realizing the function of internal heating.
[0015] (2) By setting up slide rails and pulleys, when it is necessary to repair the hollow tube coil frame, first disconnect the interface flanges of the hollow tube coil frame and the inlet pipe and return pipe, then pull the hollow tube coil frame outward, and the pulleys at the bottom of the hollow tube coil frame roll along the slide rails, making the pulling easier and realizing the function of easy movement of the trolley.
[0016] (3) By setting up a solenoid valve, a vacuum suction pipe, a vacuum pump, an air venting breather and an exhaust pipe, the sealing door is closed before heating, and then the vacuum pump is started. As the solenoid valve opens, the vacuum pump expels the air inside the inner cavity through the vacuum suction pipe, thus realizing the function of internal vacuuming. Attached Figure Description
[0017] Figure 1 This is a frontal cross-sectional view of the present invention.
[0018] Figure 2 This is a front view structural diagram of the present utility model;
[0019] Figure 3 This is a top view cross-sectional structural diagram of the present invention;
[0020] Figure 4 This is a side view sectional structural diagram of the present invention.
[0021] In the diagram: 1. Outer shell; 2. Inner cavity; 3. Insulated inner shell; 4. Hollow tube tray; 5. Drying tray support; 6. Material drying tray; 7. Sealed door; 8. Observation window; 9. Vacuum gauge; 10. Inert gas injection port; 11. Water inlet pipe; 12. Return pipe; 13. Water storage tank; 14. Heating coil; 15. Water outlet pipe; 16. Water pump; 17. PLC controller; 18. Slide rail; 19. Pulley; 20. Solenoid valve; 21. Vacuum suction pipe; 22. Vacuum pump; 23. Exhaust breather; 24. Exhaust pipe; 25. Liquid level gauge; 26. Oil level gauge. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example: Please refer to Figure 1-4 An integrated explosion-proof vacuum drying oven includes an outer shell 1, an insulated inner shell 3 fixedly connected to the bottom of the outer shell 1, an inner cavity 2 provided inside the insulated inner shell 3, a sealing door 7 hinged to the front end of the outer shell 1, a vacuum gauge 9 fixedly connected to the top of the front end of the sealing door 7, an observation window 8 fixedly connected to the middle position of the front end of the sealing door 7, a PLC controller 17 fixedly connected to the top of the left front end of the outer shell 1, an oil level gauge 26 provided on the left side of the front end of the outer shell 1, a liquid level gauge 25 provided on the right side of the front end of the outer shell 1, and a heating component for easy heating provided inside the inner cavity 2.
[0024] Please see Figure 1-4 An integrated explosion-proof vacuum drying oven also includes a heating component, which includes a hollow tube coil frame 4. The hollow tube coil frame 4 is disposed inside the inner cavity 2. Multiple sets of drying tray racks 5 are horizontally fixed between the two sides inside the hollow tube coil frame 4. Material drying trays 6 are horizontally placed on the top of the drying tray racks 5. An inert gas injection port 10 is fixedly connected to the bottom of the inner cavity 2. A water storage tank 13 is fixedly connected to the left side of the top of the heat-insulating inner shell 3. An electric heating coil 14 is fixedly connected to the rear end of the water storage tank 13. A water pump 16 is installed at the rear end of the top of the heat-insulating inner shell 3. A water outlet pipe 15 is fixedly connected between the water storage tank 13 and the water pump 16. A water inlet pipe 11 is fixedly connected between the hollow tube coil frame 4 and the water pump 16. A return pipe 12 is fixedly connected between the hollow tube coil frame 4 and the water storage tank 13. A water outlet pipe 15 is fixedly connected to the top right side of the water storage tank 13.
[0025] The hollow tube tray 4, water inlet pipe 11, and return pipe 12 are internally connected. The baking tray brackets 5 are arranged at equal intervals. The inner cavity 2 and inert gas injection port 10 are internally connected. The water inlet pipe 11 and return pipe 12 pass through the interior of the heat-insulating inner shell 3. The electric heating coil 14 passes through the rear end of the water storage tank 13 and extends into its interior. The water storage tank 13 and oil level gauge 26 are internally connected. The electric heating coil 14, water pump 16, and PLC controller 17 are electrically connected. The heating components are built-in and integrated.
[0026] Specifically, such as Figure 1 , Figure 2 and Figure 3As shown, the electric heating coil 14 heats the water in the water storage tank 13, and the water pump 16 pumps the hot water in the water storage tank 13 into the hollow tube coil frame 4 along the water inlet pipe 11. After circulating inside the hollow tube coil frame 4, the hot water flows back to the water storage tank 13 through the return pipe 12. The temperature inside the inner cavity 2 rises, and the material inside the material drying tray 6 is dried.
[0027] The inner cavity 2 has slide rails 18 fixedly connected to both sides of the bottom end. The hollow tube plate frame 4 has pulleys 19 installed at the four corners of the bottom end. The shape and size of the pulleys 19 and the slide rails 18 are compatible. The pulleys 19 can slide back and forth along the top of the slide rails 18, and the trolley is easy to move and disassemble.
[0028] Specifically, such as Figure 1 and Figure 4 As shown, disconnect the interface flanges of the hollow tube coil frame 4, the inlet pipe 11, and the return pipe 12. Then pull the hollow tube coil frame 4 outward. The pulley 19 at the bottom of the hollow tube coil frame 4 rolls along the slide rail 18, making it easier to pull out.
[0029] A vacuum pump 22 is installed on the right side of the top of the heat-insulating inner shell 3. An exhaust pipe 24 is fixedly connected to the rear end of the heat-insulating inner shell 3. A solenoid valve 20 is installed on the top of the exhaust pipe 24. A vacuum suction pipe 21 is fixedly connected between the solenoid valve 20 and the vacuum pump 22. An air venting breather 23 is installed on the left side of the heat-insulating inner shell 3. The heat-insulating inner shell 3 and the solenoid valve 20 are internally connected. The PLC controller 17, the solenoid valve 20, and the vacuum pump 22 are electrically connected. The vacuum system is built-in and integrated.
[0030] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the sealing door 7 is closed, and then the vacuum pump 22 is started. As the solenoid valve 20 is opened, the vacuum pump 22 discharges the air inside the inner cavity 2 through the vacuum suction pipe 21.
[0031] Working Principle: In use, the material to be dried is first laid flat inside the material drying tray 6, which is placed horizontally on the tray support 5. Before heating, the sealing door 7 is closed, and then the vacuum pump 22 is started. As the solenoid valve 20 is opened, the vacuum pump 22 expels the air inside the inner cavity 2 through the vacuum suction pipe 21. As the inner shell 3 is evacuated, inert gas is injected from the inert gas injection port 10. At the same time, the electric heating coil 14 heats the water in the water storage tank 13. The water pump 16 pumps the hot water in the water storage tank 13 into the hollow tube coil 4 through the water inlet pipe 11. The hot water circulates inside the hollow tube coil 4 and then flows back to the water storage tank 13 through the return pipe 12. The temperature inside the inner cavity 2 rises, drying the material inside the material drying tray 6. When the hollow tube coil frame 4 needs to be repaired, first disconnect the interface flanges of the hollow tube coil frame 4 and the inlet pipe 11 and return pipe 12. Then pull the hollow tube coil frame 4 outward. The pulley 19 at the bottom of the hollow tube coil frame 4 rolls along the slide rail 18, making it easier to pull.
[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An integrated explosion-proof vacuum drying oven comprising an outer housing (1), characterized in that: An insulated inner shell (3) is fixedly connected to the bottom of the outer shell (1). An inner cavity (2) is provided inside the insulated inner shell (3). A sealing door (7) is hinged to the front end of the outer shell (1). A vacuum gauge (9) is fixedly connected to the top of the front end of the sealing door (7). An observation window (8) is fixedly connected to the middle position of the front end of the sealing door (7). A PLC controller (17) is fixedly connected to the top of the left front end of the outer shell (1). An oil level gauge (26) is provided on the left side of the front end of the outer shell (1). A liquid level gauge (25) is provided on the right side of the front end of the outer shell (1), a vacuum pump (22) is installed on the right side of the top of the heat-insulating inner shell (3), an exhaust pipe (24) is fixedly connected to the rear end of the heat-insulating inner shell (3), a solenoid valve (20) is installed on the top of the exhaust pipe (24), a vacuum suction pipe (21) is fixedly connected between the solenoid valve (20) and the vacuum pump (22), an air venting breather (23) is installed on the left side of the heat-insulating inner shell (3), and a heating component for easy heating is provided inside the inner cavity (2); The heating assembly includes a hollow tube coil frame (4), which is disposed inside the inner cavity (2). Multiple sets of drying tray supports (5) are horizontally fixed between the two sides inside the hollow tube coil frame (4). Material drying trays (6) are horizontally placed at the top of each drying tray support (5). An inert gas injection port (10) is fixedly connected to the bottom of the inner cavity (2). A water storage tank (13) is fixedly connected to the left side of the top of the heat-insulating inner shell (3). The rear end is fixedly connected to an electric heating coil (14), and a water pump (16) is installed at the rear end of the top of the heat-insulating inner shell (3). A water outlet pipe (15) is fixedly connected between the water storage tank (13) and the water pump (16). A water inlet pipe (11) is fixedly connected between the hollow tube coil frame (4) and the water pump (16). A return pipe (12) is fixedly connected between the hollow tube coil frame (4) and the water storage tank (13). A water outlet pipe (15) is fixedly connected to the top right side of the water storage tank (13).
2. The integrated explosion-proof vacuum drying oven according to claim 1, characterized in that: The hollow tube tray (4), water inlet pipe (11), and return pipe (12) are internally connected, and the baking tray brackets (5) are arranged at equal intervals.
3. The integrated explosion-proof vacuum drying oven according to claim 1, characterized in that: The inner cavity (2) and the inert gas injection port (10) are connected internally, and the water inlet pipe (11) and the return pipe (12) penetrate the interior of the heat-insulating inner shell (3).
4. The integrated explosion-proof vacuum drying oven according to claim 1, characterized in that: The electric heating coil (14) passes through the rear end of the water storage tank (13) and extends into it. The water storage tank (13) and the oil level gauge (26) are internally connected. The electric heating coil (14), the water pump (16), and the PLC controller (17) are electrically connected.
5. The integrated explosion-proof vacuum drying oven according to claim 1, characterized in that: The inner cavity (2) has slide rails (18) fixedly connected to both sides of the bottom end. The hollow tube frame (4) has pulleys (19) installed at the four corners of the bottom end. The pulleys (19) and slide rails (18) are matched in shape and size. The pulleys (19) can slide back and forth along the top of the slide rails (18).
6. The integrated explosion-proof vacuum drying oven according to claim 1, characterized in that: The inner heat-insulating shell (3) and the solenoid valve (20) are internally connected, and the PLC controller (17), the solenoid valve (20), and the vacuum pump (22) are electrically connected.