Anti-corrosion vacuum drying oven

Abstract

The utility model discloses an anti-corrosion type vacuum drying oven which comprises an oven body, a fiber grating sensor, a controller and a prompter, an anti-corrosion layer is arranged on the inner wall of the oven body, the fiber grating sensor is arranged on the side, close to the inner wall of the oven body, of the anti-corrosion layer and detects the thickness change of the anti-corrosion layer, and the input end of the controller is connected with the fiber grating sensor. The thickness change of the anti-corrosion layer is detected in real time, early warning is carried out in advance, an operator can repair or replace the anti-corrosion layer in time, and the accuracy and timeliness of judgment are improved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum drying oven technology, specifically to a corrosion-resistant vacuum drying oven. Background Technology

[0002] Vacuum drying ovens are devices specifically designed for drying heat-sensitive, easily decomposed, and easily oxidized substances. They are widely used in research and application fields such as biochemistry, chemical pharmaceuticals, medical and health care, agricultural research, and environmental protection. During the drying process, the dried items may release corrosive substances such as acids or alkalis. For example, acidic substances are released during the drying of peptides, and alkaline substances are released during the drying of amines such as ethylamine and aniline. This can cause corrosion of the inner wall of the oven, affecting its service life. To prevent corrosion of the inner wall, an anti-corrosion layer is usually coated on its surface. However, since the anti-corrosion layer can be damaged, operators can visually inspect the anti-corrosion layer after a period of use and repair or replace it accordingly. However, manual inspection can only be carried out after drying is complete, making real-time detection impossible. The accuracy of visual inspection is low, and damage to the anti-corrosion layer can only be observed by the naked eye, making early warning impossible. Utility Model Content

[0003] This invention provides a corrosion-resistant vacuum drying oven that can solve the above-mentioned technical problems.

[0004] This utility model is achieved through the following technical solution:

[0005] A corrosion-resistant vacuum drying oven includes a main body, an inner wall of the main body, a fiber optic sensor, a controller, and an indicator.

[0006] The inner wall of the main body is provided with an anti-corrosion layer. The fiber Bragg grating sensor is disposed on the side of the anti-corrosion layer close to the inner wall of the main body to detect the thickness change of the anti-corrosion layer. The input terminal of the controller is connected to the fiber Bragg grating sensor to receive the signal output by the fiber Bragg grating sensor. The output terminal of the controller is connected to the indicator.

[0007] Furthermore, the fiber optic grating sensor array is configured.

[0008] Furthermore, the anti-corrosion layer is a polytetrafluoroethylene layer or a soluble polytetrafluoroethylene layer.

[0009] Furthermore, the thickness of the anti-corrosion layer is 0.4mm to 0.7mm.

[0010] Furthermore, the anti-corrosion layer is a titanium alloy layer.

[0011] Furthermore, the thickness of the anti-corrosion layer is 0.5mm to 1mm.

[0012] Furthermore, the prompter includes a voice prompt and / or an indicator light.

[0013] Furthermore, it also includes a protective plate, the anti-corrosion layer is disposed on the protective plate, the fiber optic grating sensor is disposed between the inner wall of the body and the protective plate, and the protective plate is detachably connected to the inner wall of the body.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] A corrosion-resistant vacuum drying oven includes a chamber, an anti-corrosion layer, a fiber Bragg grating sensor, a controller, and an indicator. When the anti-corrosion layer inside the drying oven becomes thinner or damaged due to wear or corrosion, the fiber Bragg grating sensor can determine the thickness change of the anti-corrosion layer by detecting wavelength changes. When the fiber Bragg grating sensor detects that the thickness of the anti-corrosion layer is lower than the thickness that needs to be repaired or replaced, the fiber Bragg grating sensor transmits the signal to the controller. The controller outputs the signal to the indicator, prompting the staff to repair or replace the anti-corrosion layer. There is no need to wait for the drying process to be completed and then visually inspect whether the anti-corrosion layer is damaged. Real-time detection of the thickness change of the anti-corrosion layer provides early warning, prompting the staff to repair or replace the anti-corrosion layer in a timely manner, thus improving the accuracy and timeliness of the judgment. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of the corrosion-resistant vacuum drying oven according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of the local structure at point A;

[0019] Figure 3 This is a cross-sectional view of the vacuum pump body.

[0020] The attached diagram shows the markings and corresponding component names:

[0021] 10-Body, 11-Inner wall, 12-Anti-corrosion layer, 13-Fiber grating sensor, 14-Controller, 15-Indicator, 16-Protective plate;

[0022] 20 - Pump body, 22 - Driving screw, 23 - Driven screw. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0024] Example

[0025] Please see Figures 1-3 A corrosion-resistant vacuum drying oven includes a box body, a fiber optic grating sensor 13, a controller 14, and an indicator 15. The inner wall 11 of the body 10 is provided with a corrosion-resistant layer 12. For example, the corrosion-resistant layer 12 is a polytetrafluoroethylene layer or a soluble polytetrafluoroethylene layer. The thickness of the corrosion-resistant layer 12 is 0.4mm to 0.7mm. It not only has corrosion resistance but also wear resistance. Since the placement of the containers being dried will cause wear on the placement plate inside the drying oven during the process of handling them, and the sliding between the placement plate and the inner wall 11 of the box will also cause wear, the use of polytetrafluoroethylene or soluble polytetrafluoroethylene as the first corrosion-resistant layer can improve the service life of the first corrosion-resistant layer. For example, the anti-corrosion layer 12 is a titanium alloy layer with a thickness of 0.5mm to 1mm. Titanium alloy has excellent corrosion resistance, especially in acidic and alkaline environments. It also has good fatigue resistance and impact resistance, and can better withstand mechanical impact and wear caused by long-term use. In the field of biochemistry, titanium alloy has good biocompatibility and will not contaminate the dried items. This is especially important for some applications with high purity requirements (such as the drying of biological products such as peptides and proteins), which can significantly extend the service life of equipment and reduce maintenance costs. The titanium alloy can be made by adding 6% aluminum (Al) and 4% vanadium (V) to titanium, and can be used in a variety of environments.

[0026] The fiber Bragg grating sensor 13 is disposed on the side of the anti-corrosion layer 12 near the inner wall 11 of the housing to detect the thickness change of the anti-corrosion layer 12. It should be noted that the fiber Bragg grating sensor 13 is existing technology. When the thickness of the anti-corrosion layer changes or is damaged, it will cause a slight strain change. The fiber Bragg grating sensor 13 can detect this strain change and reflect it through wavelength drift. The fiber Bragg grating sensor 13 is disposed below the anti-corrosion layer 12, and the installation process is relatively simple and has good long-term stability. It should be noted that the fiber Bragg grating sensor 13 can also be embedded in the anti-corrosion layer 12. The installation process is more complex than that of placing it below the anti-corrosion layer 12. For example, the fiber Bragg grating sensor 13 can be arranged in an array. The array arrangement can fully cover the detected area, thereby accurately detecting the thickness change of the anti-corrosion layer at different locations and further improving the overall detection accuracy.

[0027] The input terminal of the controller 14 is connected to the fiber Bragg grating sensor 13 to receive the signal output by the fiber Bragg grating sensor 13. The output terminal of the controller 14 is connected to the prompter 15. For example, the prompter 15 includes a voice prompter 15 and / or an indicator light. For example, the voice prompter 15 is used to indicate that the anti-corrosion layer 12 is damaged, and the indicator light is used to indicate that the thickness of the anti-corrosion layer has reached the critical value for repair.

[0028] A corrosion-resistant vacuum drying oven includes a chamber, a corrosion-resistant layer 12, a fiber Bragg grating sensor 13, a controller 14, and an indicator 15. When the corrosion-resistant layer 12 inside the drying oven becomes thinner or damaged due to wear or corrosion, the fiber Bragg grating sensor 13 can determine the thickness change of the corrosion-resistant layer 12 by detecting wavelength changes. When the fiber Bragg grating sensor 13 detects that the thickness of the corrosion-resistant layer 12 is lower than the thickness that needs to be repaired or replaced, the fiber Bragg grating sensor 13 transmits the signal to the controller 14, and the controller 14 outputs the signal to the indicator 15, prompting the staff to repair or replace the corrosion-resistant layer. There is no need to wait for the drying process to be completed and then visually inspect whether the corrosion-resistant layer 12 is damaged. Real-time detection of the thickness change of the corrosion-resistant layer provides early warning and prompts the staff to repair or replace the corrosion-resistant layer 12 in a timely manner, improving the accuracy and timeliness of the judgment.

[0029] The corrosion-resistant vacuum drying oven also includes multiple placement plates for placing the items to be dried. The multiple placement plates are horizontally spaced along the height of the oven body. The placement plates are detachably connected to the oven body. For example, the inner wall 11 of the main body 10 is provided with a support for supporting the placement plates. The placement plates are detachably connected to the oven body. When the anti-corrosion layer 12 needs to be repaired or replaced, the placement plates can be pulled out of the oven body, which makes it convenient for operators to repair or replace the anti-corrosion layer 12.

[0030] In another embodiment, the surface of the fiber Bragg grating sensor 13 is coated with a protective layer. When the anti-corrosion layer 12 is damaged during the drying process, the fiber Bragg grating sensor 13 will be exposed to a corrosive environment and the anti-corrosion layer 12 cannot be repaired in time. At this time, the corrosive environment will corrode the fiber Bragg grating sensor 13 and cause it to fail. Therefore, setting a protective layer on the surface of the fiber Bragg grating sensor 13 can prevent damage to it in this situation.

[0031] In another embodiment, a protective plate 16 is also included, with an anti-corrosion layer 12 disposed on the protective plate 16. A fiber optic grating sensor 13 is disposed between the inner wall 11 of the main body 10 and the protective plate 16. The protective plate 16 is detachably connected to the inner wall 11 of the main body 10. For example, the inner wall 11 of the main body 10 has a slot, and the protective plate 16 has a buckle corresponding to the slot. The protective plate 16 and the housing are buckled together. Adjacent protective plates 16 are sealed by a sealing strip. The sealing strip can be made of Teflon material and has anti-corrosion properties. When the anti-corrosion layer 12 needs to be repaired, the protective plate 16 can be disassembled for easy repair. For example, when polytetrafluoroethylene or soluble polytetrafluoroethylene is used as the anti-corrosion material, it needs to be attached to the protective plate 16 by spraying. When titanium alloy is used as the anti-corrosion material, it needs to be attached to the protective plate 16 by thermal spraying or chemical plating. The detachable arrangement of the protective plate 16 and the housing facilitates the repair operation of the anti-corrosion layer 12.

[0032] In another embodiment, a vacuum pump is also included. The vacuum pump includes a pump body 20, a driving screw 21, and a driven screw 22. The pump body 20 has a cavity for accommodating the driving screw 21 and the driven screw 22. To prevent corrosion of the vacuum pump by corrosive gases, the pump body 20, the driving screw 21, and the driven screw 22 are made of corrosion-resistant metal. Compared to electroplating or bonding anti-corrosion layers on their surfaces, this effectively solves the problem of corrosion-resistant layer peeling off. For example, the pump body 20, the driving screw 21, and the driven screw 22 can be made of stainless steel containing austenitic components. Preferably, they are made of titanium alloy, which, although having anti-corrosion properties, is made of austenitic stainless steel. Stainless steel with a high coefficient of thermal expansion requires a larger gap between the pump body 20 and the drive and driven screws 21 and 22 to prevent them from jamming during vacuum pump operation. However, increasing the gap would reduce the ultimate vacuum of the vacuum pump. Titanium alloy, on the other hand, has a smaller coefficient of thermal expansion, eliminating the need to increase the gap between the pump body 20 and the drive and driven screws 21 and 22 to prevent jamming. Therefore, titanium alloy is not only corrosion-resistant but also does not reduce the ultimate vacuum of the vacuum pump. As an important component of the vacuum drying oven, corrosion protection of the vacuum pump can extend its service life.

[0033] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A corrosion-resistant vacuum drying oven, comprising a main body, characterized in that, This includes the inner wall of the main body, fiber optic grating sensors, controllers, and indicators. The inner wall of the main body is provided with an anti-corrosion layer. The fiber Bragg grating sensor is disposed on the side of the anti-corrosion layer close to the inner wall of the main body to detect the thickness change of the anti-corrosion layer. The input terminal of the controller is connected to the fiber Bragg grating sensor to receive the signal output by the fiber Bragg grating sensor. The output terminal of the controller is connected to the indicator.

2. The corrosion-resistant vacuum drying oven according to claim 1, characterized in that, The fiber optic grating sensor array is configured.

3. The corrosion-resistant vacuum drying oven according to claim 1, characterized in that, The anti-corrosion layer is a polytetrafluoroethylene layer or a soluble polytetrafluoroethylene layer.

4. The corrosion-resistant vacuum drying oven according to claim 3, characterized in that, The thickness of the anti-corrosion layer is 0.4mm to 0.7mm.

5. A corrosion-resistant vacuum drying oven according to claim 1, characterized in that, The anti-corrosion layer is a titanium alloy layer.

6. A corrosion-resistant vacuum drying oven according to claim 5, characterized in that, The thickness of the anti-corrosion layer is 0.5mm to 1mm.

7. A corrosion-resistant vacuum drying oven according to claim 1, characterized in that, The prompter includes a voice prompt and / or an indicator light.

8. A corrosion-resistant vacuum drying oven according to claim 1, characterized in that, It also includes a protective plate, the anti-corrosion layer is disposed on the protective plate, the fiber optic grating sensor is disposed between the inner wall of the body and the protective plate, and the protective plate is detachably connected to the inner wall of the body.

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