Steam control humidity structure and oven

Abstract

The utility model discloses a steam control humidity structure and oven, including adjusting assembly and steam nozzle subassembly, through the synergies of adjusting assembly and steam nozzle subassembly, can filter and pressure regulating to the steam of input, output clean and stable high temperature saturated steam direct injection into the oven inside, realize the accurate control to the oven humidity to the effective solution of the diaphragm dark mark, the bar mark and the cracking etc. of the problem of humidity out of control in the prior art. Meanwhile, the structure avoids the problem of scale and heat loss caused by the attachment of atomized water droplets in the traditional humidification scheme, not only improves the drying efficiency of the oven, but also ensures the consistency and reliability of the diaphragm drying quality, meets the demand of lithium battery industry to high -efficient drying.

Description

Technical Field

[0001] This utility model relates to the field of electrode coating, and in particular to a steam-controlled humidity structure and an oven. Background Technology

[0002] Existing steam-heating ovens for coating machines typically use high-temperature saturated steam as a heat source to heat fresh air via heat exchange, and then use the heated fresh air to dry the films. With the rapid development of the lithium battery industry, higher demands are placed on the drying speed and quality of coating ovens. However, when the oven's fresh air temperature rises to a certain limit, the moisture in the slurry on the film surface evaporates rapidly, leading to defects such as dark spots, streaks, and even cracks, resulting in a large number of scrapped products. Experimental analysis revealed that this problem is mainly caused by humidity fluctuations within the oven. Humidity imbalance leads to inconsistent drying levels inside and outside the film, particularly insufficient drying of the inner layer. However, existing steam-heating ovens lack humidity monitoring and regulation functions, making precise humidity control difficult and limiting improvements in equipment performance and film drying quality.

[0003] Currently, conventional humidity control methods typically involve introducing a mixture of compressed air and tap water into the oven's fresh air duct for humidification. While this can replenish humidity to some extent, it has significant drawbacks. Firstly, the atomized water droplets easily adhere to the oven's inner walls, forming scale and potentially causing corrosion of the metal sheeting, increasing maintenance and cleaning work. Secondly, the added room-temperature tap water absorbs heat and participates in heat exchange when it enters the high-temperature oven, significantly reducing the oven's heating efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a steam humidity control structure and an oven that can accurately control the humidity and pressure of the oven.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A steam humidity control structure includes an adjustment component and a steam nozzle assembly; the adjustment component has an air inlet, a gas processing unit, and an air outlet, the gas processing unit being used to filter and regulate the pressure of the input steam; the steam nozzle assembly is connected to the air outlet of the adjustment component and is used to output the filtered and regulated steam.

[0007] Furthermore, the gas processing unit includes a filter and a regulating valve arranged in sequence; the filter is used to filter impurities from the input steam to ensure the cleanliness of the steam; the regulating valve is used to regulate the pressure of the filtered steam to output steam at a preset pressure.

[0008] Furthermore, a pressure gauge is installed between the filter and the regulating valve. The pressure gauge is used to monitor the steam pressure after filtration in real time, so as to monitor and correct the steam regulation process.

[0009] Furthermore, the air inlet is provided with a first shut-off valve, which is used to cut off the steam input after the equipment is stopped to prevent steam from entering; the air outlet is provided with a second shut-off valve, which is used to manually adjust the flow rate and on / off of steam entering the oven to prevent high-temperature steam from entering uncontrollably when the steam regulating valve fails.

[0010] Furthermore, the outlet end is connected to an inverted bucket drain valve, which is connected to the steam nozzle assembly; the inverted bucket drain valve is used to collect water droplets flowing back from the steam nozzle assembly.

[0011] Furthermore, the steam nozzle assembly includes an air inlet pipe, a quick-connect bend, and a multi-port nozzle pipe; the air inlet pipe is rotatably connected to one end of the quick-connect bend, and the multi-port nozzle pipe is rotatably connected to the other end of the quick-connect bend; the bending angle of the quick-connect bend is an obtuse angle.

[0012] Furthermore, the bending angle of the quick-connect bend is 95-110°.

[0013] An oven includes the steam humidity control structure described above, wherein the steam nozzle assembly injects filtered and pressure-regulated steam into the oven.

[0014] Furthermore, the oven is equipped with a humidity monitor to monitor the humidity inside the oven.

[0015] Furthermore, this includes output pipes, input pipes, and heat exchangers;

[0016] One end of the input pipe is connected to a heat exchanger, which is used to transport hot steam to the heat exchanger. The hot steam heats the air flowing through the heat exchanger, providing the oven with hot air heated by the heat exchanger.

[0017] The output pipe is connected to the oven and is used to export the steam after the temperature has been reduced.

[0018] The beneficial effects of this utility model are:

[0019] This invention discloses a steam-controlled humidity structure that, through the synergistic action of an adjustment component and a steam nozzle assembly, filters and regulates the input steam, outputting clean and stable high-temperature saturated steam directly into the oven. This achieves precise humidity control within the oven, effectively solving problems such as membrane dark spots, streaks, and cracking caused by uncontrolled humidity in existing technologies. Simultaneously, this structure avoids the scale buildup and heat loss issues associated with traditional humidification solutions due to atomized water droplets, not only improving oven drying efficiency but also ensuring the consistency and reliability of membrane drying quality, thus meeting the lithium battery industry's demand for efficient drying. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the steam humidity control structure of this utility model;

[0023] Figure 3 This is a schematic diagram showing the disassembled structure of the steam nozzle assembly of this utility model.

[0024] 1. Drying oven;

[0025] 2. Adjustment assembly; 21. Air inlet; 22. Air outlet; 23. Gas processing unit; 231. Filter; 232. Regulating valve; 233. Pressure gauge; 24. First shut-off valve; 25. Second shut-off valve; 26. Inverted tank drain valve;

[0026] 3. Steam nozzle assembly; 31. Air inlet pipe; 32. Quick-connect elbow; 33. Multi-port nozzle pipe; 331. Air jet orifice; 34. Quick-connect clamp; 35. Spray fixing pipe;

[0027] 4. Humidity detector;

[0028] 5. Steam pipe assembly support; 51. Stainless steel feet;

[0029] 6. Input pipe;

[0030] 7. Output pipe. Detailed Implementation

[0031] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0032] Reference Figure 1 This invention achieves effective humidity control within the oven 1 by introducing high-temperature steam from the steam input pipe 6 in the factory through a series of treatments. Specifically, the high-temperature steam from the input pipe 6 is filtered, pressure regulated, and water filtered through a steam humidity control structure to remove impurities, regulate pressure, and ensure steam quality. The steam is then injected into the oven 1 through the steam nozzle assembly 3 to precisely replenish the humidity in the oven 1 environment. Furthermore, a humidity detector 4 is installed within the oven 1 area to monitor humidity changes in real time and works in conjunction with the control module to form a closed-loop humidity control, making humidity regulation more efficient and stable, thereby improving the drying performance of the oven 1 and the product quality.

[0033] In some embodiments, the system includes an output pipe 7, an input pipe 6, and a heat exchanger; one end of the input pipe 6 is connected to a heat exchanger for conveying hot steam to the heat exchanger, and the hot steam heats the air flowing through it, providing the oven 1 with hot air heated by the heat exchanger; the output pipe 7 is used to discharge the steam after the temperature has been reduced.

[0034] Among them, reference Figure 2 A steam humidity control structure includes an adjustment component 2 and a steam nozzle assembly 3. The adjustment component 2 has an inlet end 21, a gas processing unit 23, and an outlet end 22. The gas processing unit 23 is used to filter and regulate the pressure of the input steam. The steam nozzle assembly 3 is connected to the outlet end 22 of the adjustment component 2 and is used to output the filtered and regulated steam. The cleanliness and pressure of the filtered and regulated steam meet the standard requirements, allowing it to directly contact the diaphragm and thus be directly introduced into the oven 1 to regulate the humidity of the oven 1.

[0035] In some embodiments, continue to refer to Figure 2The gas processing unit 23 includes a filter 231 and a regulating valve 232 arranged sequentially. The filter 231 is used to filter impurities from the steam drawn from the input pipe 6 to ensure the cleanliness of the steam. The regulating valve 232 is used to regulate the pressure of the filtered steam to output steam at a preset pressure. Specifically, after passing through the regulating component 2, the steam enters the steam nozzle assembly 3 through the inlet pipe 31. After entering, the high-temperature steam first passes through the steam filter 231, which uses its high-efficiency filtration structure to remove solid particles and liquid impurities, ensuring that the cleanliness of the steam meets the usage requirements. Then, it enters the high-precision steam regulating valve 232, which precisely controls the amount of steam entering the oven 1 based on analog control signals. Finally, the steam enters the oven 1 through the steam nozzle assembly 3.

[0036] Reference Figure 2 , 3 The steam nozzle assembly 3 is connected to the outlet 22 of the regulating assembly 2. Through a specially designed nozzle, filtered and pressure-regulated steam is evenly sprayed into the oven 1, effectively controlling the humidity inside the oven 1. For example, in the scenario of film drying in a coating machine, a humidity monitoring instrument monitors the humidity of the oven 1 in real time. When the humidity is lower than the set lower limit, the closed-loop system controls the steam regulating valve 232 to increase the valve opening, allowing high-temperature steam to quickly replenish the humidity through the steam nozzle assembly 3. This avoids problems such as dark spots, streaks, or cracks on the film caused by insufficient humidity, achieving the goal of rapid and efficient drying in the oven 1.

[0037] Furthermore, refer to Figure 2 A pressure gauge 233 is installed between the filter 231 and the regulating valve 232. The pressure gauge 233 is used to monitor the pressure of the filtered steam in real time, so as to monitor and correct the steam regulation process. In a specific implementation, when high-temperature steam enters the filter 231 through the input pipe 6, the filter 231 removes solid particles and liquid impurities from the steam to ensure cleanliness. Subsequently, the steam enters the pressure gauge 233, which feeds back the current steam pressure value to the control system in real time to determine whether the steam meets the input pressure requirements of the regulating valve 232, thereby avoiding the impact of abnormal steam pressure on the subsequent regulation accuracy. Specifically, the pressure gauge 233 is preferably a high-temperature shock-resistant pressure gauge 233.

[0038] In some embodiments, refer to Figure 2The air inlet 21 is equipped with a first shut-off valve 24, which is used to cut off the steam input after the equipment stops, preventing steam from entering. The air outlet 22 is equipped with a second shut-off valve 25, which is used to manually adjust the flow rate and on / off state of the steam entering the oven 1, so as to prevent high-temperature steam from entering uncontrollably when the steam regulating valve 232 fails. Specifically, the first shut-off valve 24 is installed at the interface between the input pipe 6 and the regulating component 2. The sealing structure ensures that the input pipe 6 is completely closed when the equipment is stopped, preventing potential safety hazards caused by steam leakage when the equipment is not working. At the same time, the second shut-off valve 25 is provided at the air outlet 22. The second shut-off valve 25 is manually controlled to adjust the flow rate and on / off state of the steam entering the oven 1, and is used as a backup control device when the steam regulating valve 232 in the regulating component 2 fails. For example, during the membrane drying process, if the steam regulating valve 232 loses its control capability due to malfunction, high-temperature steam may enter the oven 1 in excess, resulting in excessive humidity or excessive temperature, which will affect the surface quality of the membrane. At this time, the operator can manually adjust the steam flow rate or completely cut off the steam supply through the second shut-off valve 25, thereby avoiding abnormal operation of the oven 1 caused by the failure of the regulating valve 232, and ensuring the safety of equipment operation and the drying quality of the product.

[0039] In some embodiments, refer to Figure 2 The outlet 22 is connected to an inverted bucket steam trap 26, which is connected to the steam nozzle assembly 3. The inverted bucket steam trap 26 is used to collect water droplets flowing back from the steam nozzle assembly 3. In specific implementation, the inverted bucket steam trap 26 is connected to the outlet 22 via a pipe and further connected to the steam nozzle assembly 3. Steam is delivered to the steam nozzle assembly 3 through the inverted bucket steam trap 26 and then sprayed into the drying oven 1. When water droplets are generated due to condensation during the steam delivery process, the water droplets are effectively collected and discharged by the inverted bucket steam trap 26 under the designed gravity, thereby preventing water droplets from mixing into the steam inside the drying oven 1 and affecting the drying performance.

[0040] In some embodiments, refer to Figure 3The steam nozzle assembly 3 includes an inlet pipe 31, a quick-connect bend 32, and a multi-nozzle pipe 33. The inlet pipe 31 is rotatably connected to one end of the quick-connect bend 32, and the multi-nozzle pipe 33 is rotatably connected to the other end of the quick-connect bend 32. Specifically, the rotatable connection is achieved through a standard quick-connect clamp 34 or a pipe thread interface, ensuring both the sealing of the steam flow and allowing for angle adjustment during installation and commissioning, thereby optimizing the steam injection direction and distribution. In practice, the inlet pipe 31 introduces high-temperature steam, processed by the regulating assembly 2, into the quick-connect bend 32. To adapt to the drying requirements of different diaphragms, the nozzle direction and steam distribution may need adjustment. At this time, the rotatable quick-connect bend 32 and the multi-nozzle pipe 33 can flexibly adjust the injection angle and range, ensuring that the steam evenly covers the interior of the drying oven 1, thus avoiding the problem of insufficient or excessive drying of the diaphragms due to uneven steam distribution, and improving the consistency of drying effect and product quality.

[0041] Furthermore, the bending angle of the quick-connect bend 32 is an obtuse angle. It is understood that the angled structure of the quick-connect bend 32 guides the steam flow within the multi-nozzle pipe 33 and promotes the return of condensate. It is understood that the returned condensate can be collected by the inverted bucket drain valve 26 and will not enter the oven 1, thus avoiding water stains on the inner wall of the oven 1 or the surface of the membrane, or affecting humidity control. Specifically, the bending angle of the quick-connect bend 32 is 95-110°, preferably 100°. Through the synergistic effect of the obtuse-angle bend and the inverted bucket drain valve 26, condensate is quickly discharged, ensuring the purity of the high-temperature saturated steam within the oven 1, improving drying efficiency, and reducing the defect rate.

[0042] Furthermore, the multi-nozzle pipe 33 evenly injects steam into the interior of the oven 1 through multiple jet holes 331. The multi-nozzle pipe 33 here includes multiple jet holes 331, and a specific number of jet holes 331 can be set according to specific production needs.

[0043] In some embodiments, the steam nozzle assembly 3 introduces high-temperature steam into the oven 1 through the inlet pipe 31. One end of the inlet pipe 31 is connected to the outlet end 22 of the regulating assembly 2 through a standard flange to ensure a sealed connection of the high-temperature steam, and the other end is a quick-install flange structure, which is combined and fixed with the quick-install elbow 32 through pipe threads.

[0044] During the specific installation process, refer to Figure 1-3First, the inlet pipe 31 is extended from the bottom of the oven 1 into the oven 1 area. Then, the spray fixing pipe 35 is fitted onto the inlet pipe 31. The spray fixing pipe 35 is welded to the inner liner of the oven 1 through its bottom flange to ensure its stability and support function within the oven 1. To further optimize the installation and fixing effect, three set screw holes are reserved at the top of the spray fixing pipe 35 to assist in fixing the position of the quick-connect elbow 32 before welding. Finally, the quick-connect flange part of the inlet pipe 31 and the quick-connect elbow 32 part are assembled to form an integral structure, allowing steam to smoothly enter the steam nozzle assembly 3 through the quick-connect elbow 32 and be evenly sprayed into the oven 1.

[0045] In some embodiments, to achieve effective introduction of high-temperature steam and humidity regulation, a pipe interface is welded into the steam inlet pipe 31 of the plant, which connects to the inlet end 21 of the regulating component 2. A D-type metal gasket is provided at the interface to ensure sealing performance, and the connection is locked by an external hexagonal bolt assembly to ensure the safety and reliability of the steam pipeline under high temperature and high pressure.

[0046] Furthermore, refer to Figure 1 The bottom of the steam humidity control structure is equipped with a stainless steel steam pipe assembly bracket 5. This bracket 5 is mainly used to support key equipment in the steam humidity control structure, such as the regulating component 2. To adapt to different installation environments, the bottom of the steam pipe assembly bracket 5 is designed with four stainless steel feet 51 with pads. The stainless steel feet 51 can adjust the height of the steam pipe assembly bracket 5, thereby ensuring the stability and adaptability of the overall device.

[0047] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A steam-controlled humidity structure, characterized in that, include regulating components and steam nozzle components; The regulating component has an air inlet, a gas processing unit, and an air outlet. The gas processing unit is used to filter and regulate the pressure of the input steam. The steam nozzle assembly is connected to the outlet end of the regulating assembly and is used to output filtered and pressure-regulated steam.

2. The steam-controlled humidity structure according to claim 1, characterized in that, The gas processing unit includes a filter and a regulating valve arranged in sequence; The filter is used to remove impurities from the input steam to ensure the cleanliness of the steam. The regulating valve is used to regulate the pressure of the filtered steam to output steam at a preset pressure.

3. The steam-controlled humidity structure according to claim 2, characterized in that, A pressure gauge is installed between the filter and the regulating valve. The pressure gauge is used to monitor the steam pressure after filtration in real time, so as to monitor and correct the steam regulation process.

4. The steam-controlled humidity structure according to claim 1, characterized in that, The air inlet is equipped with a first shut-off valve, which is used to cut off the steam input after the equipment is stopped to prevent steam from entering. The outlet end is equipped with a second shut-off valve, which is used to manually adjust the flow rate and on / off state of the steam entering the oven, so as to prevent high-temperature steam from entering uncontrollably when the steam regulating valve fails.

5. The steam-controlled humidity structure according to claim 1, characterized in that, The outlet end is connected to an inverted bucket drain valve, which is connected to the steam nozzle assembly. The inverted bucket drain valve is used to collect water droplets flowing back from the steam nozzle assembly.

6. The steam-controlled humidity structure according to claim 1, characterized in that, The steam nozzle assembly includes an air inlet pipe, a quick-connect elbow, and a multi-port nozzle pipe. The air intake pipe is rotatably connected to one end of the quick-connect bend, and the multi-port nozzle pipe is rotatably connected to the other end of the quick-connect bend; The bending angle of the quick-connect bend is an obtuse angle.

7. The steam-controlled humidity structure according to claim 6, characterized in that, The bending angle of the quick-connect bend is 95-110°.

8. An oven comprising the steam control humidity structure of any one of claims 1-7, characterized in that, The steam nozzle assembly injects filtered and pressure-regulated steam into the oven.

9. The drying oven according to claim 8, characterized in that, The oven is equipped with a humidity monitor to monitor the humidity inside the oven.

10. The drying oven according to claim 8, characterized in that, This includes output pipes, input pipes, and heat exchangers; One end of the input pipe is connected to a heat exchanger, which is used to transport hot steam to the heat exchanger. The hot steam heats the air flowing through the heat exchanger, providing the oven with hot air heated by the heat exchanger. The output pipe is connected to the oven and is used to export the steam after the temperature has been reduced.

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