A drying oven and drying method for water-based PU leather processing

Abstract

The present invention belongs to the technical field of water-based PU leather, and in particular, is an oven and drying method for processing water-based PU leather, comprising a drying frame with a feeding component, and also comprising a drying device, a filtering device, and a re-drying device. The oven and drying method for processing water-based PU leather, by setting a re-drying device, can re-dry and heat the water-based PU leather, so as to accelerate the drying speed. By moving the push frame, the push connecting rod can be synchronously driven to deflect, and then the transmission rod can be driven to rotate, so as to drive the rotation of the transmission pipeline, and the transmission pipeline can transport the filtered gas into the re-drying nozzle. At the same time, the rotation of the transmission pipeline is coordinated with the crank handle and the deflection frame to drive the re-drying nozzle to deflect up and down, so as to realize uniform drying of the water-based PU leather, and solve the technical problems of the existing oven for processing water-based PU leather with long drying time and increased production cost.

Description

Technical Field

[0001] The invention relates to the technical field of water-based PU leather, and in particular to an oven and a drying method for processing water-based PU leather. Background Art

[0002] Water-based PU leather is an environmentally friendly synthetic leather that has lower volatile organic compound (VOCs) emissions than traditional solvent-based PU leather, making it more friendly to the environment and human health. In the manufacturing process of water-based PU leather, water is used as a diluent instead of commonly used organic solvents, which reduces the emission of harmful gases during the production process.

[0003] Existing water-based PU leather needs to be dried during production. Existing oven-dried water-based PU leather needs to be cured and dried by heating in the oven, which may take a long time. Long-term heating consumes a lot of energy and increases production costs. Although water-based PU leather is relatively environmentally friendly, some volatiles may still be emitted during curing in the oven. These volatiles may not only affect the air quality of the working environment, but also have a certain impact on the health of workers by being directly discharged, and will cause heat loss. In addition, the existing drying equipment separates microwave drying and widening ovens, resulting in a long drying line and large space occupation. Summary of the invention

[0004] Based on the technical problems that the existing oven used for water-based PU leather processing has a long drying time, increases production costs, and the gases generated in the oven are directly discharged, and the volatiles may not only affect the air quality of the working environment, but also have a certain impact on the health of workers, and cause heat loss, and the drying line is long and occupies a large space, the present invention proposes an oven and a drying method for water-based PU leather processing.

[0005] The invention provides an oven for processing water-based PU leather, comprising a drying frame with a feeding component, a microwave heater, a drying device, a filtering device and a re-drying device.

[0006] The microwave heater is fixedly mounted on the inner wall of the drying frame.

[0007] The drying device is located inside the drying frame, and dries the water-based PU leather that needs to be dried. The drying device includes a conveying mechanism, an adjusting mechanism and an air supply mechanism. The conveying mechanism includes a drying fan, and the drying fan conveys heated hot air to the PU leather. The adjusting mechanism includes an adjusting plate, and the deflection of the adjusting plate deflects the wind direction of the hot air conveyed by the drying fan to the left and right. The air supply mechanism includes an air supply fan, and the rotation of the air supply fan conveys the hot air conveyed by the drying fan to the surface of the PU leather.

[0008] The filtering device is located on the outer side of the drying frame and filters the gas after drying in the drying frame. The filtering device includes a filtering frame, a filtering fan, a filtering mechanism and a cleaning mechanism. The filtering mechanism includes a filtering plate, and the filtering plate filters the gas sucked by the filtering fan. The cleaning mechanism includes a cleaning scraper, and the cleaning scraper cleans impurities attached to the outer surface of the filtering plate.

[0009] The re-drying device is located on the outer side of the drying frame and re-dries the water-based PU leather. The re-drying device includes a re-drying nozzle, which sprays the gas filtered by the filtering device onto the outer surface of the water-based PU leather in the drying frame for drying.

[0010] Preferably, the drying fan is arranged on the outer side of the drying frame, and the inner wall of the drying frame is fixedly mounted with symmetrically distributed air outlet shells, and the air outlet end of the drying fan is fixedly connected to the outer surface of the air outlet shell through a connecting pipe.

[0011] Through the above technical solution, the heated air is sucked by the drying fan and transported into the air outlet casing, so that the water tank PU leather can be dried.

[0012] Preferably, the adjustment mechanism also includes an adjusting hydraulic cylinder, which is fixedly mounted on the outer side of the drying frame through a support frame, one end of the piston rod of the adjusting hydraulic cylinder is fixedly mounted with a pushing frame, one end of the pushing frame passes through the outer side of the drying frame, both ends of the adjustment plate are hinged to the inner wall of the air outlet shell through a pin shaft, the pin shaft of the adjustment plate passes through the outer surface of the air outlet shell and is fixedly mounted with an adjusting connecting rod, one end of the adjusting connecting rod is hinged to the outer surface of the pushing frame through a pin shaft.

[0013] Through the above technical scheme, the hydraulic cylinder is adjusted to drive the push frame to move, and the adjustment plate can be driven to deflect by adjusting the deflection of the connecting rod. After the adjustment plate is deflected, the wind direction of the hot air blown away by the air outlet casing can be adjusted, so as to facilitate uniform drying of the water-based PU leather.

[0014] Preferably, the air supply mechanism also includes a universal joint, one end of the universal joint is fixedly installed on the outer surface of the air supply fan, one end of the air supply fan is rotatably connected to the inner wall of the air outlet shell through a bearing, one end of the universal joint is rotatably connected to the inner wall of the air outlet shell through a bearing and then passes through the outer side surface of the air outlet shell, an air supply turntable is fixedly installed on one end of the universal joint, an air supply slide groove is fixedly installed on the outer surface of the pushing frame, and the column of the air supply turntable is slidably inserted into the inner wall of the air supply slide groove.

[0015] Through the above technical scheme, the air supply fan that can be deflected by the universal joint rotates, and the back-and-forth movement of the pushing frame drives the air supply chute to move back and forth. The movement of the air supply chute drives the air supply turntable to rotate, thereby driving the air supply fan to rotate, and the hot air in the air outlet casing is evenly dispersed and transported downward to blow down the outer surface of the water-based PU leather.

[0016] Preferably, the filter frame is arranged on the outer side of the drying frame, the filter fan is arranged on the outer side of the drying frame, the air inlet end of the filter fan is fixedly connected to the upper surface of the drying frame through a connecting pipe, and the air outlet end of the filter fan is fixedly connected to one end of the filter frame through a connecting pipe.

[0017] Through the above technical solution, the filter fan sucks the gas in the drying frame to achieve hot air circulation, which is convenient for reducing the water vapor generated in the drying frame after drying.

[0018] Preferably, the filtering mechanism also includes an absorbent cotton assembly, which is fixedly mounted on the inner wall of the filtering frame, the filter plate is fixedly mounted on the inner wall of the filtering frame, an activated carbon filter is fixedly mounted on the inner wall of the filtering frame, and a heating wire assembly is fixedly mounted on the inner wall of the filtering frame.

[0019] Through the above technical scheme, the absorbent cotton component can absorb the water vapor contained in the gas sucked by the filter fan, so as to facilitate the recycling of the gas. The filter plate can block the impurities in the gas. The activated carbon filter can adsorb the odor and volatiles contained in the gas. The heating wire component can heat the gas, so that the temperature of the gas meets the drying temperature.

[0020] Preferably, the cleaning mechanism further comprises a moving component, the moving component is fixedly mounted on the outer side of the filter frame, the outer surface of the screw rod of the moving component is threadedly connected with an electromagnet component, and one end of the electromagnet component is slidably plugged with one end of the sliding rod of the moving component;

[0021] An adsorption shell is slidably inserted into the interior of the filter frame through a rod, the outer side surface of the electromagnet component is magnetically connected to the outer side surface of the adsorption shell, the outer surface of the adsorption shell is fixedly installed to one end of the cleaning scraper, and a collection box with a filter screen is fixedly installed on the outer surface of the adsorption shell through a hose that penetrates the outer surface of the filter frame, and a cleaning fan is fixedly installed on one end of the collection box.

[0022] Through the above technical scheme, the moving parts are composed of a screw, a motor that drives the screw to rotate, a sliding rod, a synchronous belt and a synchronous wheel. The cooperation of the synchronous belt and the synchronous wheel drives another screw to rotate, driving the electromagnet assembly to descend. The electromagnet assembly can be magnetically connected to the adsorption shell, driving the adsorption shell to descend synchronously. In order to facilitate the smooth descent of the adsorption shell, the connecting ball can be rotatably connected on the adsorption shell, and the ball moves on the rod to facilitate the rapid lifting and lowering of the adsorption shell and reduce friction. The descent of the adsorption shell can drive the cleaning scraper to descend. After one end of the cleaning scraper contacts the filter plate, it can scrape the impurities on the filter plate and then adsorb them with the suction of the cleaning fan and then transport them into the collection box.

[0023] Preferably, a movable frame is slidably connected to the inner wall of the filter frame through a rod, a pressure plate is slidably connected to the outer surface of the movable frame, the outer side surface of the movable frame is magnetically connected to the outer surface of the electromagnet component, a track plate is fixedly installed on the inner wall of the filter frame, one end of the pressure plate is slidably connected to the inner wall of the track plate, and a collecting trough with a conveying pipe is fixedly installed on the inner wall of the filter frame, and the conveying pipe of the collecting trough passes through the lower surface of the filter frame.

[0024] Through the above technical solution, the movable frame is magnetically connected to the electromagnet component, and the movement of the electromagnet component can drive the movable frame to move synchronously. The position where the movable frame contacts the rod can rotatably connect the ball to facilitate the movement of the movable frame. After the movable frame drives the pressure plate to descend, the pressure plate moves along the track of the track plate, and can first approach the absorbent cotton component and then move downward. After being clamped by the two pressure plates, the moisture contained in the absorbent cotton component can be squeezed out.

[0025] Preferably, the re-drying device also includes a mounting frame, which is fixedly mounted on the outer side surface of the drying frame, and a conveying rod with a turntable is mounted on the outer surface of the mounting frame through a bearing, and a pushing connecting rod is hinged on the outer surface of the pushing frame through a pin shaft, one end of the pushing connecting rod is hinged to the outer surface of the turntable of the conveying rod through a pin shaft, and the outer surface of the mounting frame is rotatably connected with a transmission pipe through a bearing, and the outer surface of the conveying rod drives the transmission pipe to rotate through a bevel gear set, one end of the transmission pipe is fixedly connected to one end of the filtering frame through a connecting pipe, and one end of the transmission pipe is rotatably connected to the outer side surface of the drying frame through a bearing and then passes through the inner wall of the drying frame to extend to the inside thereof, and the inner wall of the drying frame is rotatably connected to the two ends of the re-drying nozzle through a bearing seat, one end of the transmission pipe is fixedly connected to the outer surface of the re-drying nozzle through a hose, and one end of the transmission pipe is fixedly mounted with a crank, and a deflection frame is hinged on the outer surface of the re-drying nozzle through a pin shaft, and one end of the deflection frame is rotatably connected to one end of the crank.

[0026] Through the above technical scheme, the back and forth movement of the pushing frame can drive the pushing connecting rod to deflect and then drive the rotating rod to rotate, and the transmission of the bevel gear group can drive the rotation of the transmission pipe. The transmission pipe can drive the re-drying nozzle to deflect up and down through the cooperation of the crank handle and the deflection frame, thereby achieving uniform drying of the outer surface of the water-based PU leather, and at the same time can accelerate the flow of airflow in the drying frame, thereby accelerating the drying speed.

[0027] The present invention provides a drying method for water-based PU leather processing in an oven, comprising the following steps:

[0028] S1: After turning on the microwave heater, electromagnetic heating is used, and the water-based PU leather to be dried is transported through the conveying parts on the drying frame. At the same time, the drying fan sucks the heated air and transports it into the air outlet shell through the connecting pipe. After the adjustment hydraulic cylinder is started, the push frame is pushed back and forth, and the adjustment connecting rod is driven to deflect. The adjustment connecting rod drives the adjustment plate to deflect. After the adjustment plate is deflected, the hot air transported by the air outlet shell is changed to be deflected left and right.

[0029] S2: At the same time, the movement of the push frame drives the air supply slide to move back and forth, and then drives the air supply turntable to rotate. The rotation of the air supply turntable drives the universal joint to rotate, thereby driving the air supply fan to rotate. After sucking the hot air in the air outlet shell, the hot air can be transported downward, so that the wind direction of the hot air can be toward the outer surface of the water-based PU leather below. At the same time, the air supply fan can disperse the hot air in the air outlet shell evenly.

[0030] S3: The filter fan draws the air in the drying frame through the connecting pipe and then enters the filter frame, where it is filtered through the filter plate. After the moisture in the air is absorbed by the absorbent cotton component, it is heated by the heating wire component and then transported into the transfer pipe through the conveying pipe. The movement of the pushing frame can drive the transfer rod on the mounting frame to rotate through the pushing connecting rod. The rotation of the transfer rod drives the transfer pipe to rotate through the bevel gear set. The transfer pipe drives the crank to rotate. The crank drives the deflection frame to deflect, which drives the re-drying nozzle to deflect up and down. The hot air in the transfer pipe is transported into the re-drying nozzle through the hose to dry the water-based PU leather.

[0031] S4: When the filter plate and the absorbent cotton assembly need to be processed, the moving component is started to drive the electromagnet component to descend, and the moving frame and the cleaning scraper adsorbed by the electromagnet component are lowered on the rod in the filter frame. At the same time, the cleaning fan is started, and the air in the outer shell is sucked and adsorbed, and the impurities scraped by the cleaning scraper are sucked and transported into the collection box. After being blocked by the filter net in the collection box, the impurities are retained in the collection box. The descent of the moving frame drives the pressure plate to descend, and the pressure plate moves along the track of the track plate, pushing the pressure plate box absorbent cotton assembly and then moving it down. The absorbent cotton assemblies on both sides of the absorbent cotton assembly are clamped and moved downward, so that the water in the absorbent cotton assembly can be squeezed into the collection tank and flows out through the collection tank.

[0032] The beneficial effects of the present invention are:

[0033] 1. By setting a drying device and a microwave heater, the drying speed of water-based PU leather can be accelerated. By adjusting the push of the hydraulic cylinder, the push frame is driven to move, and the driving adjustment plate is deflected, and the wind direction in the air outlet shell is deflected left and right, so as to fully dry the outer surface of the water-based PU leather. At the same time, the movement of the push frame can drive the air supply fan to rotate continuously through the back and forth movement of the air supply slide slot, and the hot air in the air outlet shell is evenly sucked and then transported downward, and the wind direction of the hot air is changed, so that the hot air can be blown to the outer surface of the water-based PU leather, and the hot air in the air outlet shell can be evenly dispersed, which is convenient for uniform drying of the PU leather. Through the combination of the microwave heater and the drying frame, the microwave heater uses the microwave electromagnetic field to interact with the polar molecules in the material, so that the polar molecules change orientation with the change of polarity of the alternating electromagnetic field, and generate heat by mutual friction, thereby achieving rapid and uniform heating. Microwave technology can quickly and evenly heat water-based PU raw materials, shorten the production cycle, and improve production efficiency. Microwave heating can improve the molecular structure of water-based PU and enhance the physical properties and chemical stability of the product. The application of microwave technology helps to optimize the production process of water-based PU and reduce production difficulty and cost. Compared with traditional heating methods, microwave heating has higher energy utilization rate and can significantly reduce energy consumption. No fuel is required during microwave heating, and no pollutants such as waste gas and wastewater are generated, which meets environmental protection requirements. The maintenance cost of microwave heating equipment is relatively low, and long-term use can save a lot of costs for enterprises. By blowing hot air, the air flow in the drying frame is kept uniform, making the heating more uniform, which can speed up the drying speed and reduce the floor space at the same time, solving the technical problems of long drying time, increased production cost, and long drying line occupied by existing water-based PU leather processing.

[0034] 2. By setting up a filtering device, the gas generated by drying in the drying frame can be recycled. The filter plate, absorbent cotton component and activated carbon filter in the filtering frame can filter the air sucked by the filter fan, remove water vapor, and take out odor and volatiles. The exhausted gas can be purified and recycled again, and the residual heat of the sucked gas is used for recycling and adaptation to save energy. The heating wire component can heat the sucked gas when the temperature is lower than the temperature required for drying. At the same time, the movement of the electromagnet component can drive the scraper and the pressure plate to move synchronously, so as to clean the impurities on the filter plate and squeeze the water adsorbed by the absorbent cotton component, so as to realize the recycling of the filter plate and the absorbent cotton component, so as to facilitate the recycling of the gas, solve the technical problem that the gas generated in the existing oven is directly discharged, and the volatiles may not only affect the air quality of the working environment, but also have a certain impact on the health of the workers, and cause heat loss.

[0035] 3. By setting up a re-drying device, the PU leather can be dried and heated again, which is convenient for accelerating the drying speed. Through the movement of the pushing frame, the pushing connecting rod can be synchronously driven to deflect, and then the transmission rod can be driven to rotate, thereby driving the rotation of the transmission pipeline. The transmission pipeline can transport the filtered gas into the re-drying nozzle. At the same time, the rotation of the transmission pipeline is coordinated with the crank handle and the deflection frame to drive the re-drying nozzle to deflect up and down, thereby realizing uniform drying of the PU leather, solving the technical problems of long drying time and increased production cost in the existing oven used for water-based PU leather processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of an oven for water-based PU leather processing proposed by the present invention;

[0037] Figure 2 A three-dimensional diagram of a drying frame structure of an oven for water-based PU leather processing proposed by the present invention;

[0038] Figure 3 A three-dimensional diagram of an air outlet shell structure of an oven for water-based PU leather processing proposed by the present invention;

[0039] Figure 4 A three-dimensional diagram of a driving frame structure of an oven for water-based PU leather processing proposed by the present invention;

[0040] Figure 5 A three-dimensional diagram of the air supply fan structure of an oven for water-based PU leather processing proposed by the present invention;

[0041] Figure 6 A three-dimensional diagram of an air supply chute structure of an oven for water-based PU leather processing proposed by the present invention;

[0042] Figure 7 A three-dimensional diagram of a filter frame structure of an oven for water-based PU leather processing proposed by the present invention;

[0043] Figure 8 A three-dimensional diagram of a filter plate structure of an oven for water-based PU leather processing proposed by the present invention;

[0044] Fig. 9 A three-dimensional diagram of an adsorption shell structure of an oven for water-based PU leather processing proposed by the present invention;

[0045] Fig.10 This is a three-dimensional diagram of the structure of the water-absorbing cotton component of an oven for water-based PU leather processing proposed by the present invention;

[0046] Fig.11 A three-dimensional diagram of a pressing plate structure of an oven for processing water-based PU leather proposed by the present invention;

[0047] Fig.12 A three-dimensional diagram of a collecting tank structure of an oven for water-based PU leather processing proposed by the present invention;

[0048] Fig.13 This is a stereoscopic diagram of a multiple drying nozzle structure of an oven for processing water-based PU leather proposed by the present invention.

[0049] In the figure: 1. drying frame; 11. microwave heater; 2. drying fan; 21. air outlet housing; 3. adjusting hydraulic cylinder; 31. pushing frame; 32. adjusting plate; 33. adjusting connecting rod; 4. air supply fan; 41. universal joint; 42. air supply turntable; 43. air supply chute; 5. filtering frame; 51. filtering fan; 6. filtering plate; 61. absorbent cotton assembly; 62. activated carbon filter; 63. heating wire assembly; 7. moving part; 71. electromagnet part; 72. adsorption housing; 73. cleaning scraper; 74. collecting box; 75. cleaning fan; 76. moving frame; 77. pressing plate; 78. track plate; 79. collecting trough; 8. mounting frame; 81. transmission rod; 82. pushing connecting rod; 83. transmission pipeline; 84. re-drying nozzle; 85. crank handle; 86. deflection frame. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] Reference Figure 1-Figure 13 , an oven for water-based PU leather processing, comprising a drying frame 1 with a feeding component, a microwave heater 11, a drying device, a filtering device and a re-drying device;

[0052] A plurality of microwave heaters 11 are fixedly mounted on the inner wall of the drying frame 1 and are distributed in a horizontal array on the inner wall of the drying frame 1; microwave heating utilizes the microwave electromagnetic field to interact with the polar molecules in the material, so that the polar molecules change orientation as the polarity of the alternating electromagnetic field changes, and generate heat by mutual friction, thereby achieving rapid and uniform heating. Microwave heating can improve the molecular structure of water-based PU and enhance the physical properties and chemical stability of the product; microwave technology can rapidly and uniformly heat water-based PU raw materials, shorten the production cycle, and improve production efficiency; it helps to optimize the production process of water-based PU, reduce production difficulty and cost, and through the heating of the microwave heater 11 and the hot air in the drying device, the microwave heater 11 can heat more evenly, while accelerating the drying speed and reducing the area occupied by the drying line.

[0053] like Figure 2-Figure 6 As shown, in order to dry the PU leather, the drying device is located inside the drying frame 1, and dries the water-based PU leather that needs to be dried. The drying device includes a conveying mechanism, an adjusting mechanism and an air supply mechanism. The conveying mechanism includes a drying fan 2, and the drying fan 2 conveys heated hot air to the PU leather. The adjusting mechanism includes an adjusting plate 32, and the deflection of the adjusting plate 32 deflects the wind direction of the hot air delivered by the drying fan 2 to the left and right. The air supply mechanism includes an air supply fan 4, and the rotation of the air supply fan 4 conveys the hot air delivered by the drying fan 2 to the surface of the PU leather.

[0054] Specifically, in order to automatically deliver hot air, the drying fan 2 is arranged on the outer side of the drying frame 1, and the inner wall of the drying frame 1 is fixedly installed with symmetrically distributed air outlet shells 21. The symmetrical air outlet shells 21 are respectively located above and below the PU leather to achieve synchronous drying of the upper and lower surfaces of the PU leather. The air outlet end of the drying fan 2 is fixedly connected to the outer surface of the air outlet shell 21 through a connecting pipe, and the air inlet end of the drying fan 2 is fixedly connected to the air outlet end of the heating device, so that the gas can be heated by the heating device and then dried.

[0055] Specifically, in order to adjust the wind direction of the hot air, the adjusting mechanism also includes an adjusting hydraulic cylinder 3, which is fixedly installed on the outer side of the drying frame 1 through a supporting frame, and one end of the piston rod of the adjusting hydraulic cylinder 3 is fixedly installed with a pushing frame 31, and one end of the pushing frame 31 passes through the outer side of the drying frame 1, and a sealing ring is arranged at the penetration point to facilitate sealing between the pushing frame 31 and the drying frame 1, and both ends of the adjusting plate 32 are hinged to the inner wall of the air outlet housing 21 through a pin shaft, and an adjusting connecting rod 33 is fixedly installed after the pin shaft of the adjusting plate 32 passes through the outer surface of the air outlet housing 21, and one end of the adjusting connecting rod 33 is hinged to the outer surface of the pushing frame 31 through a pin shaft, and the adjusting plate 32 is driven to move by the deflection of the adjusting connecting rod 33.

[0056] Specifically, in order to drive the air supply fan 4 to rotate, the air supply mechanism also includes a universal joint 41, one end of the universal joint 41 is fixedly installed on the outer surface of the air supply fan 4, one end of the air supply fan 4 is rotatably connected to the inner wall of the air outlet shell 21 through a bearing, the air outlet of the air supply fan 4 is installed at an angle, one end of the universal joint 41 is rotatably connected to the inner wall of the air outlet shell 21 through a bearing and then passes through the outer side surface of the air outlet shell 21, an air supply turntable 42 is fixedly installed on one end of the universal joint 41, an air supply slide 43 is fixedly installed on the outer surface of the pushing frame 31, and the column of the air supply turntable 42 is slidably plugged into the inner wall of the air supply slide 43.

[0057] like Figure 7-Figure 12 As shown, in order to filter the gas in the drying frame 1, the filtering device is located on the outer side of the drying frame 1, and filters the gas after drying in the drying frame 1. The filtering device includes a filtering frame 5, a filtering fan 51, a filtering mechanism and a cleaning mechanism. The filtering mechanism includes a filtering plate 6, and the filtering plate 6 filters the gas sucked by the filtering fan 51. The cleaning mechanism includes a cleaning scraper 73, and the cleaning scraper 73 cleans impurities attached to the outer surface of the filtering plate 6.

[0058] Specifically, in order to automatically suck the gas in the drying frame 1, the filter frame 5 is arranged on the outer side of the drying frame 1, and the filter fan 51 is arranged on the outer side of the drying frame 1. The air inlet end of the filter fan 51 is fixedly connected to the upper surface of the drying frame 1 through a connecting pipe, and the air outlet end of the filter fan 51 is fixedly connected to one end of the filter frame 5 through a connecting pipe.

[0059] Specifically, in order to filter the sucked gas, the filtering mechanism also includes a water-absorbent cotton component 61, which is fixedly mounted on the inner wall of the filter frame 5. The water-absorbent cotton component 61 can absorb water vapor in the gas. The filter plate 6 is fixedly mounted on the inner wall of the filter frame 5 to filter impurities contained in the gas. An activated carbon filter 62 is fixedly mounted on the inner wall of the filter frame 5 to adsorb odors and volatiles contained in the gas. A heating wire component 63 is fixedly mounted on the inner wall of the filter frame 5 to heat the gas.

[0060] Specifically, in order to drive the cleaning scraper 73 to move, the cleaning mechanism also includes a moving component 7, which is fixedly mounted on the outer side of the filter frame 5, and the outer surface of the screw rod of the moving component 7 is threadedly connected with an electromagnet component 71, and one end of the electromagnet component 71 is slidably plugged with one end of the sliding rod of the moving component 7;

[0061] In order to scrape off the impurities on the filter plate 6, the interior of the filter frame 5 is slidably plugged with an adsorption shell 72 through a rod, the outer side of the electromagnet component 71 is magnetically connected to the outer side of the adsorption shell 72, and the outer surface of the adsorption shell 72 is fixedly installed with one end of the cleaning scraper 73. In order to collect the impurities scraped off by the cleaning scraper 73, the outer surface of the adsorption shell 72 is fixedly installed with a collection box 74 with a filter screen through the outer surface of the filter frame 5 through a hose, and a cleaning fan 75 is fixedly installed at one end of the collection box 74. The moving component 7 is composed of a screw, a motor that drives the screw to rotate, a slide rod, a synchronous belt and a synchronous wheel. Through the synchronous belt and The cooperation of the synchronous wheel drives another screw rod to rotate, driving the electromagnet assembly to descend. The electromagnet assembly can be magnetically connected to the adsorption shell 72, driving the adsorption shell 72 to descend synchronously. In order to facilitate the smooth descent of the adsorption shell 72, the connecting ball can be rotatably connected on the adsorption shell 72, and the ball moves on the rod to facilitate the rapid lifting and lowering of the adsorption shell 72 to reduce friction. The descent of the adsorption shell 72 can drive the cleaning scraper 73 to descend. After one end of the cleaning scraper 73 contacts the filter plate 6, it can scrape off the impurities on the filter plate 6 and then be adsorbed by the suction of the cleaning fan 75 and then transported into the collection box 74.

[0062] Specifically, in order to press the absorbent cotton component 61 to remove moisture, the inner wall of the filter frame 5 is slidably plugged with a movable frame 76 through a rod, and the outer surface of the movable frame 76 is slidably plugged with a pressing plate 77. The outer side surface of the movable frame 76 is magnetically connected to the outer surface of the electromagnet component 71, and a track plate 78 is fixedly installed on the inner wall of the filter frame 5. One end of the pressing plate 77 is slidably plugged with the inner wall of the track plate 78. A collecting trough 79 with a conveying pipe is fixedly installed on the inner wall of the filter frame 5, and the conveying pipe of the collecting trough 79 passes through the lower surface of the filter frame 5; the movable frame 76 is magnetically connected to the electromagnet component 71, and the movement of the electromagnet component 71 can drive the movable frame 76 to move synchronously. The position where the movable frame 76 contacts the rod can be rotatably connected to the ball to facilitate the movement of the movable frame 76. After the movable frame 76 drives the pressing plate 77 to descend, the pressing plate 77 moves along the track of the track plate 78, and can first approach the absorbent cotton component and then move downward. After being clamped by the two pressing plates 77, the moisture contained in the absorbent cotton component can be squeezed.

[0063] like Fig.13 As shown, in order to speed up the drying of PU leather, the re-drying device is located on the outer side of the drying frame 1, and re-dries the water-based PU leather. The re-drying device includes a re-drying nozzle 84, which sprays the gas filtered by the filter device onto the outer surface of the water-based PU leather in the drying frame 1 again for drying.

[0064] Specifically, in order to drive the re-drying nozzle 84 to deflect, the re-drying device also includes a mounting frame 8, which is fixedly mounted on the outer side of the drying frame 1, and a transmission rod 81 with a rotating disk is mounted on the outer surface of the mounting frame 8 through a bearing, and a push connecting rod 82 is hinged on the outer surface of the pushing frame 31 through a pin shaft, and one end of the push connecting rod 82 is hinged to the outer surface of the rotating disk of the transmission rod 81 through a pin shaft, and the outer surface of the mounting frame 8 is rotatably connected with a transmission pipe 83 through a bearing, and the outer surface of the transmission rod 81 drives the transmission pipe 83 to rotate through a bevel gear set, and one end of the transmission pipe 83 is driven by the bevel gear set. One end of the transmission pipe 83 is fixedly connected to one end of the filter frame 5 through a connecting pipe, one end of the transmission pipe 83 is rotatably connected to the outer side surface of the drying frame 1 through a bearing and then passes through the inner wall of the drying frame 1 to extend into the interior thereof, the inner wall of the drying frame 1 is rotatably connected to the two ends of the re-drying nozzle 84 through a bearing seat, one end of the transmission pipe 83 is fixedly connected to the outer surface of the re-drying nozzle 84 through a hose, a crank 85 is fixedly installed on one end of the transmission pipe 83, a deflection frame 86 is hinged on the outer surface of the re-drying nozzle 84 through a pin shaft, and one end of the deflection frame 86 is rotatably connected to one end of the crank 85.

[0065] like Figure 1-Figure 13 As shown, the present invention proposes a drying method for water-based PU leather processing in an oven, comprising the following steps:

[0066] S1: After turning on the microwave heater 11, electromagnetic heating is used, and the water-based PU leather to be dried is transported through the conveying components on the drying frame 1. At the same time, the drying fan 2 draws the heated air and transports it into the air outlet housing 21 through the connecting pipe. After the adjusting hydraulic cylinder 3 is started, it pushes the pushing frame 31 to move back and forth, drives the adjusting connecting rod 33 to deflect, and the adjusting connecting rod 33 drives the adjusting plate 32 to deflect. After the adjusting plate 32 deflects, the hot air transported by the air outlet housing 21 is changed to be deflected left and right.

[0067] S2: At the same time, the movement of the pushing frame 31 drives the air supply slide 43 to move back and forth, and then drives the air supply turntable 42 to rotate. The rotation of the air supply turntable 42 drives the universal joint 41 to rotate, thereby driving the air supply fan 4 to rotate. After sucking the hot air in the air outlet shell 21, the hot air can be transported downward, so that the wind direction of the hot air can be toward the outer surface of the water-based PU leather below. At the same time, the air supply fan 4 can disperse the hot air in the air outlet shell 21 evenly.

[0068] S3: The filter fan 51 sucks the air in the drying frame 1 through the connecting pipe and then enters the filter frame 5, and then is filtered through the filter plate 6. After the moisture contained in the air is absorbed by the absorbent cotton component 61, it is heated by the heating wire component 63 and then transported into the transfer pipe 83 through the conveying pipe. The movement of the pushing frame 31 can drive the transmission rod 81 on the mounting frame 8 to rotate through the pushing connecting rod 82. The rotation of the transmission rod 81 drives the transmission pipe 83 to rotate through the bevel gear set. The transmission pipe 83 drives the crank 85 to rotate. The crank 85 drives the deflection frame 86 to deflect, and then drives the re-drying nozzle 84 to deflect up and down. The hot air in the transfer pipe 83 is transported into the re-drying nozzle 84 through the hose to dry the water-based PU leather.

[0069] S4: When the filter plate 6 and the absorbent cotton assembly 61 need to be processed, the movable part 7 is started to drive the electromagnet part 71 to descend, and the movable frame 76 and the cleaning scraper 73 adsorbed by the electromagnet part 71 are lowered on the rod in the filter frame 5. At the same time, the cleaning fan 75 is started, and the air in the adsorption shell 72 is sucked, and the impurities scraped by the cleaning scraper 73 are sucked and transported into the collection box 74. After being blocked by the filter net in the collection box 74, the impurities are left in the collection box 74. The descent of the movable frame 76 drives the pressing plate 77 to descend, and the pressing plate 77 moves along the track of the track plate 78, pushing the pressing plate 77 and the absorbent cotton assembly 61 and then descending. The absorbent cotton assemblies 61 on both sides of the absorbent cotton assembly 61 are clamped and moved downward, so that the water in the absorbent cotton assembly 61 can be squeezed into the collection tank 79 and flows out through the collection tank 79.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oven for processing water-based PU leather, comprising a drying frame (1) with a feeding component, characterized in that: It also includes a microwave heater (11), a drying device, a filtering device and a re-drying device; The microwave heater (11) is fixedly mounted on the inner wall of the drying frame (1); The drying device dries the water-based PU leather that needs to be dried, and the drying device comprises a conveying mechanism, an adjusting mechanism and an air supply mechanism. The conveying mechanism comprises a drying fan (2), and the drying fan (2) supplies heated hot air to the water-based PU leather. The adjusting mechanism comprises an adjusting plate (32), and the deflection of the adjusting plate (32) deflects the wind direction of the hot air delivered by the drying fan (2) to the left and right. The air supply mechanism comprises an air supply fan (4), and the rotation of the air supply fan (4) delivers the hot air delivered by the drying fan (2) to the surface of the water-based PU leather. The drying fan (2) is arranged on the outer side surface of the drying frame (1); symmetrically distributed air outlet shells (21) are fixedly mounted on the inner wall of the drying frame (1); the air outlet end of the drying fan (2) is fixedly connected to the outer surface of the air outlet shell (21) via a connecting pipe; The adjustment mechanism further comprises an adjustment hydraulic cylinder (3), the adjustment hydraulic cylinder (3) being fixedly mounted on the outer side surface of the drying frame (1) via a support frame, one end of a piston rod of the adjustment hydraulic cylinder (3) being fixedly mounted with a push frame (31), one end of the push frame (31) passing through the outer side surface of the drying frame (1), two ends of the adjustment plate (32) being hinged to the inner wall of the air outlet housing (21) via a pin shaft, the pin shaft of the adjustment plate (32) passing through the outer surface of the air outlet housing (21) and then being fixedly mounted with an adjustment connecting rod (33), one end of the adjustment connecting rod (33) being hinged to the outer surface of the push frame (31) via a pin shaft; The air supply mechanism further comprises a universal joint (41), one end of which is fixedly mounted on the outer surface of the air supply fan (4), one end of which is rotatably connected to the inner wall of the air outlet housing (21) via a bearing, one end of which is rotatably connected to the inner wall of the air outlet housing (21) via a bearing and then passes through the outer side surface of the air outlet housing (21), one end of which is fixedly mounted with an air supply turntable (42), the outer surface of the pushing frame (31) is fixedly mounted with an air supply slide groove (43), and the upright post of the air supply turntable (42) is slidably plugged into the inner wall of the air supply slide groove (43); The filtering device is located on the outer side of the drying frame (1) and filters the gas after drying in the drying frame (1). The filtering device comprises a filtering frame (5), a filtering fan (51), a filtering mechanism and a cleaning mechanism. The filtering mechanism comprises a filtering plate (6), and the filtering plate (6) filters the gas sucked by the filtering fan (51). The cleaning mechanism comprises a cleaning scraper (73), and the cleaning scraper (73) cleans impurities attached to the outer surface of the filtering plate (6). The cleaning mechanism further comprises a moving component (7), the moving component (7) being fixedly mounted on the outer side surface of the filter frame (5), the outer surface of the screw rod of the moving component (7) being threadedly connected with an electromagnet component (71), one end of the electromagnet component (71) being slidably plugged into one end of the sliding rod of the moving component (7); An adsorption shell (72) is slidably inserted into the interior of the filter frame (5) via a rod, the outer side surface of the electromagnet component (71) is magnetically connected to the outer side surface of the adsorption shell (72), the outer surface of the adsorption shell (72) is fixedly mounted to one end of the cleaning scraper (73), a collection box (74) with a filter screen is fixedly mounted on the outer surface of the adsorption shell (72) through a hose penetrating the outer surface of the filter frame (5), and a cleaning fan (75) is fixedly mounted on one end of the collection box (74); The inner wall of the filter frame (5) is slidably plugged with a movable frame (76) via a rod, the outer surface of the movable frame (76) is slidably plugged with a pressure plate (77), the outer side surface of the movable frame (76) is magnetically connected to the outer surface of the electromagnet component (71), a track plate (78) is fixedly mounted on the inner wall of the filter frame (5), one end of the pressure plate (77) is slidably plugged with the inner wall of the track plate (78), and a collecting trough (79) with a conveying pipe is fixedly mounted on the inner wall of the filter frame (5), and the conveying pipe of the collecting trough (79) passes through the lower surface of the filter frame (5); The re-drying device re-dries the water-based PU leather, and the re-drying device comprises a re-drying nozzle (84), and the re-drying nozzle (84) sprays the gas filtered by the filtering device again onto the outer surface of the water-based PU leather in the drying frame (1) for drying; The re-drying device further comprises a mounting frame (8), wherein the mounting frame (8) is fixedly mounted on the outer side surface of the drying frame (1), a conveying rod (81) with a rotating disk is mounted on the outer surface of the mounting frame (8) via a bearing, a pushing connecting rod (82) is hingedly connected to the outer surface of the pushing frame (31) via a pin shaft, one end of the pushing connecting rod (82) is hingedly connected to the outer surface of the rotating disk of the conveying rod (81) via a pin shaft, the outer surface of the mounting frame (8) is rotatably connected to a conveying pipe (83) via a bearing, the outer surface of the conveying rod (81) drives the conveying pipe (83) to rotate via a bevel gear set, and one end of the conveying pipe (83) is connected to the conveying pipe (83) via a connecting pipe. One end of the filter frame (5) is fixedly connected, one end of the transfer pipe (83) is rotatably connected to the outer side surface of the drying frame (1) through a bearing, and then passes through the inner wall of the drying frame (1) and extends into the interior thereof, the inner wall of the drying frame (1) is rotatably connected to both ends of the re-drying nozzle (84) through a bearing seat, one end of the transfer pipe (83) is fixedly connected to the outer surface of the re-drying nozzle (84) through a hose, one end of the transfer pipe (83) is fixedly mounted with a crank handle (85), the outer surface of the re-drying nozzle (84) is hinged with a deflection frame (86) through a pin shaft, and one end of the deflection frame (86) is rotatably connected to one end of the crank handle (85).

2. The oven for processing water-based PU leather according to claim 1, characterized in that: The filter frame (5) is arranged on the outer side surface of the drying frame (1), and the filter fan (51) is arranged on the outer side surface of the drying frame (1). The air inlet end of the filter fan (51) is fixedly connected to the upper surface of the drying frame (1) through a connecting pipe, and the air outlet end of the filter fan (51) is fixedly connected to one end of the filter frame (5) through a connecting pipe.

3. An oven for water-based PU leather processing according to claim 2, characterized in that: The filtering mechanism further comprises a water-absorbing cotton component (61), the water-absorbing cotton component (61) being fixedly mounted on the inner wall of the filtering frame (5), the filtering plate (6) being fixedly mounted on the inner wall of the filtering frame (5), an activated carbon filter (62) being fixedly mounted on the inner wall of the filtering frame (5), and a heating wire component (63) being fixedly mounted on the inner wall of the filtering frame (5).

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