Quick-drying leather processing device and drying method thereof

Abstract

The leather processing device comprises a rack, a split type drying box is mounted in the rack, and a middle negative pressure pipe is rotationally mounted on the inner wall of one side of the split type drying box; and a plurality of tubular negative pressure material suction assemblies are annularly installed on the peripheral face of the middle negative pressure pipe at equal intervals, and a passive air supply assembly is installed on the outer wall of one side of the rack. According to the device, the negative pressure exhaust assembly and the hollow air pipe are utilized to enable all the tubular negative pressure suction assemblies to firmly adsorb the leather fabric, and the motor and the gear speed-up transmission structure provide rotation power for the middle negative pressure pipe and the passive air supply assembly at the same time, so that the adsorbed leather fabric revolves around the hollow air pipe; the passive air supply assembly supplies hot air into the split drying box through the C-shaped upper and lower area air duct assembly, and the hot air makes contact with the leather fabric in the revolution process for drying.

Description

Technical Field

[0001] The present invention relates to the technical field of leather processing, in particular to a quick-drying leather processing device and a drying method thereof. Background Art

[0002] Rotary drum dryers play a key role in the leather processing process, primarily using hot air to rapidly remove moisture from the leather, ensuring smooth subsequent processing. Their structure consists of a drum, transmission mechanism, heating system, discharge port, and control system. The drum, typically horizontal or slightly tilted, is made of heat-resistant steel and equipped with internal blades or agitators to continuously stir the leather, ensuring even heating. A motor drives the drum, continuously tumbling the leather within, preventing overheating and uneven drying. The heating system can utilize steam, hot air, or electricity. A fan draws hot air into the drum, rapidly removing moisture. The temperature and air volume can be adjusted to meet the drying requirements of different leather materials. The control system ensures safe and efficient operation, automatically adjusting temperature, humidity, and drying time. In operation, wet leather is evenly placed in the drum. Once the machine is turned on, the leather continuously tumbles within the drum, allowing the hot air to fully contact the leather and rapidly evaporate moisture, achieving the desired drying effect. The parameters of the entire process can be adjusted according to the humidity and thickness of the leather to ensure uniform drying effect and avoid deformation or damage; For example, a rotary drying device for leather processing disclosed in the authorization announcement number CN212864799U includes a drying cylinder, which includes an outer cylinder and an inner cylinder. The outer cylinder is sleeved on the outside of the inner cylinder, and the inner cylinder is rotatably connected to the outer cylinder. Under the mutual cooperation of the inner cylinder and the outer cylinder, the leather to be dried is placed in the inner cylinder, and the driving motor is started to drive the inner cylinder to rotate rapidly inside the outer cylinder, thereby drying the moisture on the leather, and then the hot air is transported to the inside of the inner cylinder through the hot air nozzle to dry the leather after drying, thereby reducing the drying time of the leather. However, during the use of the above technical solution, the leather to be dried The leather is mainly placed in the inner cylinder. When the inner cylinder rotates, there will be repeated collisions and rubbing between the leather and between the leather and the inner cylinder wall. Leather is a relatively soft and elastic material. Excessive friction and collision can easily cause minor scratches, cracks or deformations on the surface, especially when dealing with thinner or delicate leather. As the moisture in the leather gradually evaporates, the material becomes drier and more fragile. Excessive mechanical action can cause wrinkles, wrinkles or uneven textures on the leather surface. These deformations further affect the appearance of the leather, and will also bring difficulties in the subsequent cutting and sewing process, reducing the quality of the finished product. Summary of the Invention

[0003] The purpose of the present invention is to provide a leather processing device and a drying method for rapid drying. The leather fabric to be dried is spread flat on a tubular negative pressure suction assembly, and the negative pressure exhaust assembly and the central air duct are used to enable each tubular negative pressure suction assembly to firmly adsorb the leather fabric. The motor and the gear speed-increasing transmission structure simultaneously provide rotational power for the central negative pressure tube and the passive air supply assembly, so that the adsorbed leather fabric revolves around the central air duct, and the passive air supply assembly sends hot air into a split drying box through a C-shaped upper and lower zone air duct assembly, and allows the hot air to contact and dry the leather fabric during the revolution, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a leather processing device for rapid drying, comprising: A frame, wherein a split-type drying box is installed inside the frame, and a central negative pressure pipe is rotatably installed on the inner wall of one side of the split-type drying box, and a plurality of tubular negative pressure suction components are annularly and evenly spaced on the outer circumference of the central negative pressure pipe. A passive air supply component is installed on the outer wall of one side of the frame, and a C-shaped upper and lower zone air duct component is installed at the air outlet end of the passive air supply component. The C-shaped upper and lower zone air duct component supplies hot air from the top and bottom ends of the split-type drying box to the interior of the split-type drying box; The machine base is installed on the outer wall of the split drying box above the passive air supply component, and a negative pressure exhaust component connected to one end of the central negative pressure pipe is installed on the outer wall of one side of the machine base. A motor is installed on the outer wall of the machine base on one side of the negative pressure exhaust component, and the output shaft of the motor is installed with a gear speed-increasing transmission structure for driving the central negative pressure pipe and the passive air supply component. A control panel is installed on one side of the surface of the split drying box, and the output end of the control panel is electrically connected to the passive air supply component, the negative pressure exhaust component, and the input end of the motor respectively.

[0005] Preferably, the gear speed increasing transmission structure includes a hollow shaft rotatably mounted on the outer wall of one side of the split drying box, a secondary gear fixed at one end of the surface of the hollow shaft, and a primary gear mounted at one end of the motor output shaft, the primary gear and the secondary gear meshing with each other, and one end of the hollow shaft is fixedly connected to one end of the central negative pressure tube and communicated with the central negative pressure tube.

[0006] Preferably, the negative pressure exhaust assembly includes a negative pressure pump installed on the outer wall of one side of the machine base, an L-shaped steel pipe installed on the air inlet of the negative pressure pump, and a rotary joint installed at one end of the L-shaped steel pipe, and the end of the rotary joint away from the L-shaped steel pipe is fixedly connected to the other end of the hollow shaft.

[0007] Preferably, a support is installed on one side of the top end of the motor, and the L-shaped steel pipe passes through the support.

[0008] Preferably, the tube-in-tube negative pressure suction assembly includes at least one pair of radial air tubes fixed in parallel on the outer walls of the two ends of the central negative pressure tube, a number of axial air tubes installed in a straight line array with equal spacing between each pair of radial air tubes, and a number of air holes arranged in a straight line with equal spacing on the outer walls of the axial air tubes.

[0009] Preferably, a manifold is installed on the outer wall of one side of one of the axial air tubes, and one end of the manifold extends downward to the interior of the central negative pressure tube.

[0010] Preferably, the C-shaped upper and lower zone air duct assembly includes a C-shaped air duct installed on the outer wall of one side of the split-type drying box and several L-shaped air supply pipes installed on the front and rear outer walls of the upper and lower ends of the C-shaped air duct, one end of the L-shaped air supply pipe extends to the interior of the split-type drying box, and the vertical center reference plane of the central negative pressure pipe coincides with the vertical center reference plane of the C-shaped air duct.

[0011] Preferably, the passive air supply component includes an elbow pipe installed at one end of the C-shaped air duct, a centrifugal fan installed at the bottom end of the elbow pipe, and a belt drive structure installed between the input shaft of the centrifugal fan and the gear speed increase transmission structure. The passive air supply component also includes an electric heating rod installed at one end inside the C-shaped air duct, and the input end of the electric heating rod is electrically connected to the output end of the control panel.

[0012] Preferably, a three-stage gear shaft is rotatably mounted on one side outer wall of the split drying box, and a final-stage gear shaft is rotatably mounted on the outer wall of the split drying box on one side of the three-stage gear shaft, the final-stage gear shaft and the three-stage gear shaft are meshed with each other, and the three-stage gear shaft is also meshed with the secondary gear, and the belt transmission structure includes a driving pulley mounted on one end of the final-stage gear shaft, a driven pulley mounted on the input shaft of the centrifugal fan, and a multi-V belt mounted between the driven pulley and the driving pulley.

[0013] The present invention also provides a rapid drying leather processing method, which uses the rapid drying leather processing device, comprising the following steps: S101: The operator selects matching process parameters on the control interface of the control panel according to the type of leather. The process parameters include the motor speed and the temperature of the C-shaped upper and lower zone air duct components. The operator then opens the split drying oven and lays the leather fabric to be dried flat on the tubular negative pressure suction component. Visual adjustments are made to ensure that the leather fabric completely covers the suction area and that an appropriate margin is reserved at the edges. The operator also ensures that the fabric is laid flat without folds, wrinkles, or overhanging parts. S102: The negative pressure exhaust component is turned on through the control panel to start working. The negative pressure exhaust component starts to continuously extract air and forms negative pressure in the central negative pressure pipe and the tube-type negative pressure suction component to ensure that the tube-type negative pressure suction component can stably absorb the leather fabric. After loading is completed, the split drying box is closed; S103: The operator activates the motor-driven gear-speed increasing transmission structure through the control panel. The motor causes the central negative pressure tube to drive the tubular negative pressure suction assembly to perform a uniform revolution, causing the flat leather material in the adsorption state to revolve around the central negative pressure tube. At the same time, the passive air supply assembly receives the rotational power from the negative pressure exhaust assembly through the gear-speed increasing transmission structure and begins to work. The passive air supply assembly and the C-shaped upper and lower zone air duct assembly work together to evenly deliver hot air into the interior of the split drying box. The upper air duct of the C-shaped upper and lower zone air duct assembly sprays the preheated hot air onto the leather surface at a constant angle, while the lower air duct forms a circulating airflow to enhance the drying efficiency of the flesh surface layer. S104: During the entire drying process, staff control the motor speed based on the drying status of the leather fabric, thereby synchronously adjusting the speed of the central negative pressure pipe and the air volume of the passive air supply component to avoid deformation or damage caused by over-drying; S105: After drying is completed, the staff shuts down the device according to the procedure. First, they turn off the motor and passive air supply components through the control panel to stop the rotation of the central negative pressure tube and the hot air supply of the C-type upper and lower zone air duct components, so that the temperature inside the split drying box gradually drops to prevent the fabric from deforming or cracking due to sudden temperature changes. After the equipment cools down, the negative pressure exhaust component is turned off, and the dried leather fabric is carefully taken out for subsequent sorting and quality inspection.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the leather processing device for rapid drying and the drying method thereof are provided with a split drying box, a central negative pressure pipe, a tubular negative pressure suction component, a negative pressure pump, a passive air supply component, a C-shaped upper and lower zone air duct component, a motor and a gear speed-increasing transmission structure and other structures that cooperate with each other, and the negative pressure exhaust component and the middle air duct are used to make each tubular negative pressure suction component firmly adsorb the leather fabric, and the motor and the gear speed-increasing transmission structure simultaneously provide rotational power for the central negative pressure pipe and the passive air supply component, so that the adsorbed leather fabric revolves around the middle air duct, and the passive air supply component sends hot air into the split drying box through the C-shaped upper and lower zone air duct component, and makes the hot air contact and dry with the leather fabric in the revolving process, thereby ensuring that the leather fabric is protected from mechanical damage, wrinkles, and other problems caused by mechanical collision during the revolving drying process; The leather is fixed to the surface of the tubular negative pressure suction component through negative pressure adsorption, forming a stable plane contact state. The plane constraint effect of the negative pressure adsorption enables the leather to maintain a predetermined shape during the drying and shrinking process. Compared with the throwing motion of the traditional rotating drum, it completely eliminates the collision and friction between the leather and the equipment, and between the leather itself, ensuring that the leather always maintains a flat tension state during the rotary drying process, avoiding fiber distortion or breakage caused by local stress concentration, and effectively protecting the appearance quality and structural integrity of the leather. Secondly, through the motor and gear speed-increasing transmission structure, the adsorbed leather fabric realizes orbital motion while surrounding the central air duct. Its orbital motion gives the leather fabric a uniform state of movement, ensuring that the hot air can be evenly distributed to each part of the leather surface during the drying process. Compared with the traditional static or unidirectional rolling drying method, the surrounding motion can achieve more uniform drying, thereby avoiding the problem of excessive or insufficient local drying. In addition, the upper and lower double-zone airflows constructed by the passive air supply components and the C-shaped upper and lower zone air duct components form a three-dimensional hot air circulation surrounding the leather surface. The upper air duct implements impact drying, directly acting on the leather grain layer to accelerate the evaporation of surface moisture. The lower air duct adopts an attached flow method to enhance the penetration drying of the flesh layer to avoid fiber hardening caused by unilateral overheating. It is suitable for the processing of ultra-thin leather and can effectively prevent edge curling during high-speed drying. Combined with the orbital motion of the leather fabric, it realizes efficient contact between hot air and fabric, accelerates the evaporation rate of moisture, and improves drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ; Figure 4 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ; Figure 5 Schematic diagram of the three-dimensional structure of the present invention Figure 3 ; Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the present invention; Figure 7 This is a schematic side view of the three-dimensional structure of the second embodiment of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the gear speed-increasing transmission structure of the second embodiment of the present invention Figure 1 ; Figure 9 Schematic diagram of the three-dimensional structure of the gear speed-increasing transmission structure of the second embodiment of the present invention Figure 2 ; Figure 10 This is a schematic diagram of the three-dimensional structure of a tubular negative pressure suction assembly according to the third embodiment of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the C-shaped upper and lower zone air duct assembly according to the fourth embodiment of the present invention; Figure 12 This is a schematic diagram of the three-dimensional structure of the passive air supply component of the fourth embodiment of the present invention.

[0016] In the figure: 1. Frame; 2. Split-type drying oven; 3. Center-mounted negative pressure pipe; 4. Tubular negative pressure suction assembly; 401. Radial air duct; 402. Axial air duct; 403. Air hole; 404. Manifold; 5. C-type upper and lower zone air duct assembly; 501. C-type air duct; 502. L-type air supply duct; 503. Elbow pipe; 6. Passive air supply assembly; 601. Centrifugal fan; 602. Belt drive structure; 7. Control panel; 8. Machine base; 9. Negative pressure exhaust assembly; 901. Negative pressure pump; 902. Support; 903. L-type steel pipe; 904. Rotary joint; 10. Motor; 11. Gear speed-increasing transmission structure; 1101. First-stage gear; 1102. Hollow shaft; 1103. Second-stage gear; 1104. Third-stage gear shaft; 1105. Final-stage gear shaft; 12. Electric heating rod. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] Embodiment 1, by Figures 1 to 6 The present invention provides a fast-drying leather processing device including a frame 1, a split-type drying box 2 is installed inside the frame 1, and a central negative pressure pipe 3 is rotatably installed on the inner wall of one side of the split-type drying box 2, and a plurality of tubular negative pressure suction components 4 are installed on the outer circumference of the central negative pressure pipe 3 at equal intervals in an annular manner, a passive air supply component 6 is installed on the outer wall of one side of the frame 1, and a C-shaped upper and lower zone air duct component 5 is installed at the air outlet end of the passive air supply component 6, and the C-shaped upper and lower zone air duct component 5 supplies hot air from the top and bottom ends of the split-type drying box 2 to the interior of the split-type drying box 2; The base 8 is installed on the outer wall of one side of the split drying box 2 above the passive air supply component 6. A negative pressure exhaust component 9 connected to one end of the central negative pressure tube 3 is installed on the outer wall of one side of the base 8. A motor 10 is installed on the outer wall of the base 8 on one side of the negative pressure exhaust component 9. The output shaft of the motor 10 is installed with a gear speed increase transmission structure 11 for driving the central negative pressure tube 3 and the passive air supply component 6. The motor 10 ensures the stability and power output of the device operation, and ensures the normal operation of components such as the passive air supply component 6 and the central negative pressure tube 3 to achieve a continuous and uniform drying process and reduce the frequency of shutdown maintenance. A control panel 7 is installed on one side of the surface of the split drying box 2, and the output end of the control panel 7 is electrically connected to the input end of the passive air supply component 6, the negative pressure exhaust component 9, and the motor 10 respectively.

[0019] A rapid drying leather processing method of this embodiment, using the aforementioned rapid drying leather processing device, comprises the following steps: S101: The operator selects matching process parameters on the control interface of the control panel 7 according to the type of leather. The process parameters include the speed of the motor 10 and the temperature of the C-shaped upper and lower zone air duct assembly 5. The operator then opens the split drying oven 2 and lays the leather fabric to be dried flat on the tubular negative pressure suction assembly 4. The operator visually adjusts the leather fabric to ensure that the suction area is completely covered with an appropriate margin at the edge, and that the fabric is laid flat without folds, wrinkles or hanging parts. S102: The negative pressure exhaust assembly 9 is turned on through the control panel 7. The negative pressure exhaust assembly 9 starts to continuously extract air and forms a negative pressure in the central negative pressure pipe 3 and the tubular negative pressure suction assembly 4 to ensure that the tubular negative pressure suction assembly 4 can stably absorb the leather fabric. After loading is completed, the split drying box 2 is closed. S103: The operator starts the motor 10 through the control panel 7 to drive the gear speed-increasing transmission structure 11. The motor 10 causes the central negative pressure tube 3 to drive the tubular negative pressure suction assembly 4 to perform a uniform revolution, causing the flat leather fabric in the adsorption state to revolve around the central negative pressure tube 3. At the same time, the passive air supply assembly 6 receives the rotational power from the negative pressure exhaust assembly 9 through the gear speed-increasing transmission structure 11 and starts working. The passive air supply assembly 6 and the C-type upper and lower zone air duct assembly 5 work together to evenly deliver hot air into the interior of the split drying box 2. The upper air duct of the C-type upper and lower zone air duct assembly 5 sprays the preheated hot air onto the leather surface at a constant angle, while the lower air duct forms a circulating airflow to enhance the drying efficiency of the flesh surface layer. S104: During the entire drying process, the staff controls the speed of the motor 10 according to the drying condition of the leather fabric, thereby synchronously adjusting the speed of the central negative pressure pipe 3 and the air volume of the passive air supply component 6 to avoid deformation or damage caused by excessive drying; S105: After the drying is completed, the staff shuts down the device according to the procedure. First, the motor 10 and the passive air supply component 6 are turned off through the control panel 7 to stop the rotation of the central negative pressure tube 3 and the hot air supply of the C-shaped upper and lower zone air duct component 5, so that the temperature inside the split drying box 2 is gradually reduced to prevent the fabric from being deformed or cracked due to sudden changes in temperature. After the equipment cools down, the negative pressure exhaust component 9 is closed, and the dried leather fabric is carefully taken out for subsequent sorting and quality inspection.

[0020] Example 2, based on Example 1, Figure 7 、 Figure 8 and Figure 9It is given that the gear speed increasing transmission structure 11 includes a hollow shaft 1102 rotatably mounted on the outer wall of one side of the split drying box 2, a secondary gear 1103 fixed at one end of the surface of the hollow shaft 1102, and a primary gear 1101 mounted at one end of the output shaft of the motor 10. The primary gear 1101 and the secondary gear 1103 are meshed with each other, and one end of the hollow shaft 1102 is fixedly connected to one end of the central negative pressure pipe 3 and communicates with the central negative pressure pipe 3. When the motor 10 and the gear speed-increasing transmission structure 11 drive the central negative pressure tube 3 and the passive air supply component 6 to work, the output shaft of the motor 10 drives the secondary gear 1103, the hollow shaft 1102 and the central negative pressure tube 3 to rotate via the primary gear 1101. Then, a plurality of annular, evenly spaced, tubular negative pressure suction components 4 revolve around the central negative pressure tube 3. The centrifugal force generated by the revolution of the tubular negative pressure suction components 4 forms a dynamic balance with the negative pressure adsorption force, thereby ensuring uniform hot air contact and avoiding mechanical scratches caused by free tumbling in traditional drum drying. The negative pressure exhaust assembly 9 includes a negative pressure pump 901 mounted on the outer wall of one side of the base 8, an L-shaped steel pipe 903 mounted on the air inlet of the negative pressure pump 901, and a rotary joint 904 mounted on one end of the L-shaped steel pipe 903. The end of the rotary joint 904 away from the L-shaped steel pipe 903 is fixedly connected to the other end of the hollow shaft 1102. A support 902 is mounted on one side of the top end of the motor 10, and the L-shaped steel pipe 903 extends through the support 902. When the negative pressure pump 901 is turned on through the control panel 7, the negative pressure pump 901 generates suction to suck out the air inside the central negative pressure pipe 3 and the tubular negative pressure suction assembly 4 through the L-shaped steel pipe 903 and the rotary joint 904, and forms a negative pressure at the air inlet of the tubular negative pressure suction assembly 4. The negative pressure pump 901 discharges the air through mechanical movement, maintaining the suction force of the suction assembly and ensuring the continuity and stability of negative pressure adsorption. While the motor 10 drives the hollow shaft 1102 and the central negative pressure tube 3 to rotate through the first-stage gear 1101 and the second-stage gear 1103, the hollow shaft 1102 maintains an unobstructed air path with the L-shaped steel pipe 903 and the negative pressure pump 901 through the rotary joint 904, thereby ensuring that the shell-and-tube negative pressure suction component 4 always maintains sufficient suction to avoid loosening or falling off of the fabric due to pressure fluctuations.

[0021] Example 3, based on Example 2, Figure 10It is given that the tube-type negative pressure suction component 4 includes at least one pair of radial air pipes 401 fixed in parallel on the outer walls of the two ends of the central negative pressure tube 3, a plurality of axial air pipes 402 installed in a straight line array with equal spacing between each pair of radial air pipes 401, and a plurality of air holes 403 arranged in a straight line with equal spacing on the outer walls of the axial air pipes 402. A manifold 404 is installed on the outer wall of one side of one axial air pipe 402, and one end of the manifold 404 extends downward to the interior of the central negative pressure tube 3. When the negative pressure exhaust component 9 starts working, the radial air pipes 401 and the axial air pipes The gas in 402 is continuously extracted and negative pressure is formed at the air holes 403. The array structure of the axial air tubes 402 forms a uniform negative pressure field through the air holes 403 distributed on the surface, ensuring that the leather always maintains full contact with the bearing surface during the dynamic drying process, and each independent axial air tube 402 can adapt to the micro-undulations of leather of different thicknesses to eliminate local stress concentration; the tubular negative pressure suction component 4 avoids the indentation or tensile deformation caused by traditional mechanical clamps, especially for fragile materials such as ultra-thin sheepskin and calfskin, and can effectively maintain the integrity of the natural texture.

[0022] Example 4, based on Example 3, Figure 11 and Figure 12 The C-shaped upper and lower zone air duct assembly 5 includes a C-shaped air duct 501 installed on the outer wall of one side of the split drying box 2 and a plurality of L-shaped air supply pipes 502 installed on the upper and lower front and rear outer walls of the C-shaped air duct 501. One end of the L-shaped air supply pipe 502 extends into the interior of the split drying box 2. The vertical center reference plane of the central negative pressure pipe 3 coincides with the vertical center reference plane of the C-shaped air duct 501. The passive air supply component 6 includes an elbow pipe 503 installed at one end of the C-shaped air duct 501, a centrifugal fan 601 installed at the bottom end of the elbow pipe 503, and a belt transmission structure 602 installed between the input shaft of the centrifugal fan 601 and the gear speed increase transmission structure 11. The passive air supply component 6 also includes an electric heating rod 12 installed at one end inside the C-shaped air duct 501. The input end of the electric heating rod 12 is electrically connected to the output end of the control panel 7. The hot air generated by the passive air supply component 6 is sent into the C-shaped air duct 501 through the elbow pipe 503, and the L-shaped air supply pipe 502 at the upper and lower ends of the C-shaped air duct 501 is used to divert the hot air, so as to send the hot air into the split-type drying box 2. The C-type upper and lower zone air duct component 5 divides the split-type drying box 2 into two upper and lower temperature control areas to ensure uniform distribution of air flow and avoid dead corners and air flow short circuits. It improves drying efficiency, shortens drying time, and ensures that the fabric is heated evenly, reducing deformation or damage caused by local overheating; The staff turns on the electric heating rod 12 through the control panel 7 to heat the airflow generated by the centrifugal fan 601 during the transportation process and then sends it to the split drying box 2 through the C-shaped upper and lower zone air duct assembly 5; A three-stage gear shaft 1104 is rotatably mounted on one side of the outer wall of the split drying box 2, and a final-stage gear shaft 1105 is rotatably mounted on the outer wall of the split drying box 2 on one side of the three-stage gear shaft 1104. The final-stage gear shaft 1105 and the three-stage gear shaft 1104 are meshed with each other, and the three-stage gear shaft 1104 is also meshed with the secondary gear 1103. The belt transmission structure 602 includes a driving pulley mounted on one end of the final-stage gear shaft 1105, a driven pulley mounted on the input shaft of the centrifugal fan 601, and a multi-V belt set between the driven pulley and the driving pulley. The secondary gear 1103 drives the final gear shaft 1105 to rotate through the tertiary gear shaft 1104, and the final gear shaft 1105 drives the belt transmission structure 602 to drive the centrifugal fan 601 to work. Since the outer diameters of the secondary gear 1103, the tertiary gear shaft 1104, and the final gear shaft 1105 decrease in sequence, the linear amplification of the rotation speed of the centrifugal fan 601 can be achieved. The centrifugal fan 601 sends external air into the C-shaped upper and lower zone air duct assembly 5, and the centrifugal fan 601 uses the rotation of the motor 10 through the gear speed-increasing transmission structure 11 to achieve directional flow of hot air.

[0023] When the embodiment of the present application is in use, the staff first checks the split drying box 2, the central negative pressure pipe 3, the tubular negative pressure suction component 4, the negative pressure exhaust component 9, the passive air supply component 6, the C-type upper and lower zone air duct component 5, the motor 10, the gear speed-increasing transmission structure 11 and the control panel 7 to ensure that all components are firmly connected, the pipeline has no leakage, the power supply is normal, and the device is well lubricated. Special attention should be paid to the sealing and smooth flow of the C-type upper and lower zone air duct component 5 to avoid air leakage affecting the drying effect; after the device is debugged, the operator selects the matching process parameters on the control interface of the control panel 7 according to the type of leather. The process parameters include the speed of the motor 10 and the temperature of the C-type upper and lower zone air duct component 5, and then opens the split drying box 2 and puts the leather to be dried. The dried leather fabric is laid flat on the tubular negative pressure suction component 4, and visual adjustment is performed to ensure that the leather fabric completely covers the adsorption area and an appropriate margin is reserved at the edge, and that the fabric is laid flat without folds, wrinkles or hanging parts to ensure uniform drying. Then the negative pressure exhaust component 9 is turned on through the control panel 7 to work, and the negative pressure exhaust component 9 begins to continuously pump air and form a negative pressure in the central negative pressure pipe 3 and the tubular negative pressure suction component 4 to ensure that the tubular negative pressure suction component 4 stably adsorbs the leather fabric. After loading is completed, the split drying box 2 is closed; the operator starts the motor 10 through the control panel 7 to drive the gear speed increase transmission structure 11, and the motor 10 enables the central negative pressure pipe 3 to drive the tubular negative pressure suction component 4 to perform a uniform speed increase. The rotation motion causes the flat leather fabric in the adsorption state to revolve around the central negative pressure tube 3. At the same time, the passive air supply component 6 receives the rotational power from the negative pressure exhaust component 9 through the gear speed increase transmission structure 11 and starts to work. The passive air supply component 6 and the C-type upper and lower zone air duct component 5 work together to evenly deliver the hot air into the split drying box 2. The upper air duct of the C-type upper and lower zone air duct component 5 sprays the preheated hot air to the leather surface at a constant angle, and the lower air duct forms a circulating airflow to enhance the drying efficiency of the meat surface layer. In the drying process, the uncovered channels of the tubular negative pressure suction component 4 will play a role in dehumidification, so as to play the role of local dehumidification and reduce the humidity in the split drying box 2. During the entire drying process, The staff controls the speed of the motor 10 according to the drying condition of the leather fabric, and synchronously adjusts the speed of the central negative pressure tube 3 and the blowing volume of the passive air supply component 6 to avoid deformation or damage caused by excessive drying; after the drying is completed, the staff shuts down the device according to the procedure, first shutting down the motor 10 and the passive air supply component 6 through the control panel 7 to stop the rotation of the central negative pressure tube 3 and the hot air supply of the C-shaped upper and lower zone air duct component 5, so that the inside of the split-type drying box 2 gradually cools down to prevent the fabric from being deformed or cracked due to sudden temperature changes. After the equipment cools down, the negative pressure exhaust component 9 is closed, and the dried leather fabric is carefully taken out for subsequent sorting and quality inspection. At this time, the drying uniformity, surface condition and whether there is any damage to the fabric are checked.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A leather processing device for rapid drying, characterized in that: include: A frame (1), wherein a split-type drying box (2) is installed inside the frame (1), and a central negative pressure pipe (3) is rotatably installed on the inner wall of one side of the split-type drying box (2), and a plurality of tube-type negative pressure suction components (4) are annularly installed at equal intervals on the outer peripheral surface of the central negative pressure pipe (3), and a passive air supply component (6) is installed on the outer wall of one side of the frame (1), and a C-shaped upper and lower zone air duct component (5) is installed at the air outlet end of the passive air supply component (6), and the C-shaped upper and lower zone air duct component (5) supplies hot air from the top and bottom ends of the split-type drying box (2) to the inside of the split-type drying box (2); A machine base (8) is mounted on the outer wall of the split drying box (2) above the passive air supply component (6); a negative pressure exhaust component (9) connected to one end of the central negative pressure pipe (3) is mounted on one side of the outer wall of the machine base (8); a motor (10) is mounted on the outer wall of the machine base (8) on one side of the negative pressure exhaust component (9); an output shaft of the motor (10) is mounted with a gear speed-increasing transmission structure (11) for driving the central negative pressure pipe (3) and the passive air supply component (6); a control panel (7) is mounted on one side of the surface of the split drying box (2); an output end of the control panel (7) is electrically connected to the input end of the passive air supply component (6), the negative pressure exhaust component (9), and the motor (10), respectively.

2. The rapid drying leather processing device according to claim 1, characterized in that: The gear speed increasing transmission structure (11) comprises a hollow shaft (1102) rotatably mounted on an outer wall of one side of the split drying box (2), a secondary gear (1103) fixed at one end of the surface of the hollow shaft (1102), and a primary gear (1101) mounted at one end of the output shaft of the motor (10), wherein the primary gear (1101) and the secondary gear (1103) are meshed with each other, and one end of the hollow shaft (1102) is fixedly connected to one end of the central negative pressure tube (3) and communicates with the central negative pressure tube (3).

3. The rapid drying leather processing device according to claim 2, characterized in that: The negative pressure exhaust assembly (9) comprises a negative pressure pump (901) mounted on an outer wall of one side of the machine base (8), an L-shaped steel pipe (903) mounted on the air inlet of the negative pressure pump (901), and a rotary joint (904) mounted at one end of the L-shaped steel pipe (903), wherein the end of the rotary joint (904) away from the L-shaped steel pipe (903) is fixedly connected to the other end of the hollow shaft (1102).

4. The rapid drying leather processing device according to claim 3, characterized in that: A support (902) is installed on one side of the top end of the motor (10), and the L-shaped steel pipe (903) passes through the support (902).

5. The rapid drying leather processing device according to claim 2, characterized in that: The tubular negative pressure suction assembly (4) comprises at least one pair of radial air tubes (401) fixed in parallel on the outer walls of both ends of the central negative pressure tube (3), a plurality of axial air tubes (402) arranged in a straight line array at equal intervals between each pair of radial air tubes (401), and a plurality of air holes (403) arranged in a straight line at equal intervals on the outer walls of the axial air tubes (402).

6. The rapid drying leather processing device according to claim 5, characterized in that: A manifold (404) is mounted on one side outer wall of one of the axial air pipes (402), and one end of the manifold (404) extends downward to the interior of the central negative pressure pipe (3).

7. The rapid drying leather processing device according to claim 2, characterized in that: The C-shaped upper and lower zone air duct assembly (5) comprises a C-shaped air duct (501) mounted on an outer wall of one side of the split drying box (2) and a plurality of L-shaped air supply pipes (502) mounted on the front and rear outer walls of the upper and lower ends of the C-shaped air duct (501), one end of the L-shaped air supply pipe (502) extending into the interior of the split drying box (2), and a vertical center reference plane of the central negative pressure pipe (3) coincides with a vertical center reference plane of the C-shaped air duct (501).

8. The rapid drying leather processing device according to claim 7, characterized in that: The passive air supply assembly (6) includes an elbow pipe (503) installed at one end of the C-shaped air duct (501), a centrifugal fan (601) installed at the bottom end of the elbow pipe (503), and a belt transmission structure (602) installed between the input shaft of the centrifugal fan (601) and the gear speed increase transmission structure (11). The passive air supply assembly (6) also includes an electric heating rod (12) installed at one end inside the C-shaped air duct (501), and the input end of the electric heating rod (12) is electrically connected to the output end of the control panel (7).

9. The rapid drying leather processing device according to claim 8, characterized in that: A three-stage gear shaft (1104) is rotatably mounted on one side outer wall of the split drying box (2), and a final-stage gear shaft (1105) is rotatably mounted on the outer wall of the split drying box (2) on one side of the three-stage gear shaft (1104). The final-stage gear shaft (1105) and the three-stage gear shaft (1104) are meshed with each other. The three-stage gear shaft (1104) is also meshed with the secondary gear (1103). The belt transmission structure (602) includes a driving pulley mounted on one end of the final-stage gear shaft (1105), a driven pulley mounted on the input shaft of the centrifugal fan (601), and a multi-V belt mounted between the driven pulley and the driving pulley.

10. A rapid drying leather processing method, using the rapid drying leather processing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S101: Select matching process parameters on the control interface of the control panel (7) according to the type of leather, the process parameters including the rotation speed of the motor (10) and the temperature of the C-shaped upper and lower zone air duct assembly (5), then open the split drying box (2) and lay the leather fabric to be dried flat on the tubular negative pressure suction assembly (4); S102: The negative pressure exhaust assembly (9) is turned on through the control panel (7) to start working. The negative pressure exhaust assembly (9) starts to continuously pump air and forms a negative pressure in the central negative pressure pipe (3) and the tube-type negative pressure suction assembly (4) to ensure that the tube-type negative pressure suction assembly (4) can stably absorb the leather fabric. After loading is completed, the split drying box (2) is closed. S103: The motor (10) is started through the control panel (7) to drive the gear speed increasing transmission structure (11). The motor (10) causes the central negative pressure tube (3) to drive the tubular negative pressure suction assembly (4) to perform a uniform revolution, so that the flat leather fabric in the adsorption state revolves around the central negative pressure tube (3). At the same time, the passive air supply assembly (6) receives the rotational power from the negative pressure exhaust assembly (9) through the gear speed increasing transmission structure (11) and starts working. The passive air supply assembly (6) and the C-type upper and lower zone air duct assembly (5) work together to uniformly send hot air into the interior of the split drying box (2). The upper air duct of the C-type upper and lower zone air duct assembly (5) sprays the preheated hot air onto the leather surface at a constant angle, and the lower air duct forms a circulating airflow to enhance the drying efficiency of the flesh surface layer. S104: During the entire drying process, the rotation speed of the motor (10) is controlled according to the drying condition of the leather fabric, so as to synchronously adjust the rotation speed of the central negative pressure pipe (3) and the blowing volume of the passive air supply component (6); S105: After the drying is completed, the device is shut down according to the program. First, the motor (10) and the passive air supply component (6) are turned off through the control panel (7) to stop the rotation of the central negative pressure pipe (3) and the hot air supply of the C-shaped upper and lower zone air duct components (5), so that the temperature inside the split drying box (2) is gradually reduced to prevent the fabric from being deformed or cracked due to a sudden change in temperature. After the equipment has cooled down, the negative pressure exhaust component (9) is closed.

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