CN216115072U - Negative pressure drying device - Google Patents
Negative pressure drying device Download PDFInfo
- Publication number
- CN216115072U CN216115072U CN202122638459.2U CN202122638459U CN216115072U CN 216115072 U CN216115072 U CN 216115072U CN 202122638459 U CN202122638459 U CN 202122638459U CN 216115072 U CN216115072 U CN 216115072U
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- box body
- box
- negative pressure
- protective gas
- drying device
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Abstract
The utility model discloses a negative pressure drying device, belonging to the field of drying equipment, comprising a box body, a vacuum pump and a protective gas supply device, wherein the front side of the box body is open, a box door is arranged at the open, an electric heating device is arranged in the box body, an air outlet and an air filling port are arranged on the box body, the air outlet of the box body is communicated with an air inlet of the vacuum pump, a first valve is arranged at the communication position of the air inlet and the air outlet of the protective gas supply device, a second valve is arranged at the communication position of the air outlet and the air filling port, the protective gas supply device is used for adding nitrogen or carbon dioxide into the box body, the structure is simple, the material can be heated and dried under the negative pressure condition, the material can be prevented from burning during heating, in addition, the protective gas can be filled into the box body after the material is dried until the air pressure in the box body is close to the atmospheric pressure, and when the temperature in the box body is reduced to be close to the room temperature, the box door can be opened, and the materials can be taken out.
Description
Technical Field
The utility model belongs to the field of drying equipment, and particularly relates to a negative pressure drying device.
Background
In the case of materials (such as a catalyst of a hydrogen fuel cell) which are liable to self-ignition during drying, vacuum freeze drying equipment is usually adopted for drying, but the drying effect is not good.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems and provide a negative pressure drying device which is simple in structure and good in safety.
The technical scheme for realizing the purpose is as follows: the utility model provides a negative pressure drying device, includes box, vacuum pump and protective gas supply arrangement, the front side of box is uncovered to be equipped with the chamber door in uncovered department, be equipped with electric heater unit in the box, be equipped with gas outlet and gas filling mouth on the box, the gas outlet of box with the air inlet intercommunication of vacuum pump, and be equipped with first valve in the intercommunication department of the two, the gas filling mouth of box with protective gas supply arrangement's gas outlet intercommunication, and be equipped with the second valve in the intercommunication department of the two, protective gas supply arrangement is used for adding nitrogen gas or carbon dioxide in the box.
Preferably, the electric heating devices are provided in plurality, and at least one electric heating device is respectively installed on the top wall, the bottom wall and the side wall of the inner side of the box body.
Preferably, the box body is further provided with a temperature monitoring device, a temperature sensing end of the temperature monitoring device is located in the box body, and the temperature monitoring device is used for monitoring the temperature in the box body.
Preferably, the box body is further provided with a pressure monitoring device, and the pressure monitoring device is used for monitoring the air pressure in the box body.
Preferably, a transparent observation window is arranged on the box door.
Compared with the prior art, the utility model has the beneficial effects that: its simple structure so can heat the stoving to the material under the condition of negative pressure, so can avoid the material burning when the heating, can fill protective gas into the box after the material is dried in addition, until the atmospheric pressure in the box is close to atmospheric pressure mutually, and when the temperature in the box drops to and is close with the room temperature, can open the chamber door to take out the material.
Drawings
FIG. 1 is a structural diagram of the negative pressure drying device of the present invention;
fig. 2 is a matching view of the box body and the electric heating device.
Detailed Description
The technical solutions of the present invention will be described in detail below with reference to examples and drawings, and the contents of the following examples are illustrative of the scope of the present invention.
Referring to fig. 1, the present invention provides a negative pressure drying device, which comprises a box body 1, a vacuum pump 2 and a protective gas supply device 3 (gas storage bottle can be adopted), wherein the front side of the box body 1 is open, a box door 101 (the box door and the box body can be provided with a lock, the box door and the box body can be locked when the box door is closed, the lock can be similar to the structure of a locking tool on the existing oven, in addition, the edges of the box door and the box body are provided with sealing rings, so that the open side of the box body can be sealed and blocked when the box door is closed), an electric heating device 4 is arranged in the box body 1, the box body 1 is provided with a gas outlet and a gas filling port, the gas outlet of the box body 1 is communicated with the gas inlet of the vacuum pump 2, the communication position of the two is provided with a first valve 5, and the gas filling port of the box body is communicated with the gas outlet of the protective gas supply device 3, and a second valve 6 is provided at the communication between the two, and the shielding gas supply means 3 is used to add nitrogen or carbon dioxide into the tank 1. In addition, the box body and the box door are provided with heat insulation interlayers, so that heat loss can be avoided.
Preferably, a plurality of electric heating devices 4 are provided, and at least one electric heating device 4 (which may be an infrared heating lamp tube) is respectively installed on the top wall, the bottom wall and the side wall of the inner side of the box body 1.
Preferably, the box body 1 is further provided with a temperature monitoring device 7 (which can be a digital display type temperature measuring device), a temperature sensing end of the temperature monitoring device is located in the box body, and the temperature monitoring device is used for monitoring the temperature in the box body.
Preferably, the box body is further provided with a pressure monitoring device 8 (which may be a digital display pressure measurement device) for monitoring the air pressure in the box body.
Preferably, a transparent observation window (convenient for observing the drying condition of the materials in the box body) is arranged on the box door.
The negative pressure drying device provided by this embodiment can put the material into the box, close the box door, open the first valve, close the second valve, start the vacuum pump, pump the negative pressure in the box, then close the first valve and stop the operation of the vacuum pump, start the heating of the electric heating device, after a period of time (e.g. 30min), stop the heating of the electric heating device, start the vacuum pump and open the first valve to continue pumping the vacuum in the box, after a period of time (e.g. 5min) the vacuum pump operates, close the first valve and stop the operation of the vacuum pump, then start the heating of the electric heating device, repeat this way until the material is dried, after the material is dried, stop the operation of the electric heating device and the vacuum pump, close the first valve, open the second valve, so that the protective gas enters the box, when the pressure in the box is equal to the atmospheric pressure, close the second valve, when the temperature in the box is reduced to normal temperature, and opening the box door, and taking out the materials.
The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (5)
1. The utility model provides a negative pressure drying device, its characterized in that, includes box, vacuum pump and protective gas feeding mechanism, the front side of box is uncovered to be equipped with the chamber door in uncovered department, be equipped with electric heater unit in the box, be equipped with gas outlet and gas filling mouth on the box, the gas outlet of box with the air inlet intercommunication of vacuum pump, and be equipped with first valve in the intercommunication department of the two, the gas filling mouth of box with protective gas feeding mechanism's gas outlet intercommunication, and be equipped with the second valve in the intercommunication department of the two, protective gas feeding mechanism is used for adding nitrogen gas or carbon dioxide in the box.
2. The negative-pressure drying device of claim 1, wherein a plurality of the electric heating devices are provided, and at least one electric heating device is respectively mounted on the top wall, the bottom wall and the side wall of the inner side of the box body.
3. The negative pressure drying device as claimed in claim 1, wherein the box body is further provided with a temperature monitoring device, a temperature sensing end of the temperature monitoring device is located in the box body, and the temperature monitoring device is used for monitoring the temperature in the box body.
4. The negative pressure drying device as claimed in claim 3, wherein the box body is further provided with a pressure monitoring device, and the pressure monitoring device is used for monitoring the air pressure in the box body.
5. The negative pressure drying device of any one of claims 1 to 4, wherein the door is provided with a transparent observation window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122638459.2U CN216115072U (en) | 2021-10-29 | 2021-10-29 | Negative pressure drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122638459.2U CN216115072U (en) | 2021-10-29 | 2021-10-29 | Negative pressure drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216115072U true CN216115072U (en) | 2022-03-22 |
Family
ID=80711416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122638459.2U Active CN216115072U (en) | 2021-10-29 | 2021-10-29 | Negative pressure drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216115072U (en) |
-
2021
- 2021-10-29 CN CN202122638459.2U patent/CN216115072U/en active Active
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