A clean nappa sofa leather manufacturing apparatus and method of use
Patent Information
- Application Number
- CN202611451195.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-18
- Publication Date
- 2026-10-27
Smart Images
Figure CN122979535A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of leather preparation technology, and in particular to a clean Nappa sofa leather preparation equipment and its usage method. Background Technology
[0002] Nappa leather production typically involves multiple wet processing steps, including rehydration, degreasing, softening, retanning, neutralization, dyeing, fatliquoring, and finishing. Many of these steps are completed within a rotating drum. Existing drum equipment for nappa leather production has a relatively simple overall structure, usually consisting of only a rotating drum body, a manually operated door, and a feeding port. In actual use, the chemicals are often weighed, handled, and poured manually, which is not only labor-intensive but also prone to spillage and volatilization, resulting in a poor workshop environment, material waste, and increased wastewater treatment load, making it difficult to meet clean production requirements. Production requirements, coupled with the fact that traditional rotary drums often have independently set feeding and discharging ports, making opening and closing operations cumbersome, and making it difficult to ensure sealing during drum rotation, which can easily lead to leakage, and requiring operators to open the doors at close range during discharge, which can cause chemicals and leather to splash and pose safety hazards. In addition, existing equipment lacks automatic feeding, automatic opening and closing, and auxiliary discharge structures that are coordinated with the drum's movement, resulting in uneven feeding, low discharge efficiency, poor leather quality consistency, and is not conducive to reducing manual contact with chemicals and reducing pollution. In view of this, in-depth research was conducted on the above problems, which led to the development of this case. Summary of the Invention
[0003] The technical solution of the present invention to achieve the above objectives is as follows: a clean Nappa sofa leather preparation device, comprising a base plate, a left vertical plate fixedly installed on the left side of the upper end of the base plate, a right vertical plate fixedly installed on the right side of the upper end of the base plate, two bearing seats fixedly installed at the top of the left and right vertical plates, two shafts movably embedded in the two bearing seats, a drum body fixedly installed between the two shafts, a feeder fixedly installed at the upper end of the left vertical plate, a discharge controller fixedly installed at the lower side wall of the left vertical plate, a driver connected to the outer wall of one end of the drum body, and the other end of the driver fixedly installed at the lower end of the right vertical plate; The discharge controller includes a side plate, which is fixedly installed on the lower side wall of the left upright plate. A first hinge seat is fixedly installed at the center of the side plate, and a second hinge seat is fixedly installed at the lower end of the side plate. A first electric push rod is hinged to the first hinge seat through a shaft, and a second electric push rod is hinged to the second hinge seat through a shaft. The telescopic end of the second electric push rod is hinged to the side wall of the first electric push rod. An operating component is connected to the telescopic end of the first electric push rod. A door is fixedly installed at the center of the outer wall of the drum body.
[0004] Preferably, the door body includes two sliding grooves, which are respectively located on both sides of the lower end of the outer wall of the drum body. An arc-shaped door body is movably fitted in the two sliding grooves. The upper wall of the arc-shaped door body slides against the outer wall of the drum body. A mounting bracket is fixedly installed on one side of the lower end of the arc-shaped door body. A guide sleeve is fixedly installed at one end of the mounting bracket. A limit rod is movably fitted in the guide sleeve. A limit block is fixedly installed at the top of the limit rod. A limit groove is formed at the lower end of the outer wall of the drum body. The top of the limit block is movably fitted in the limit groove. A first spring is movably fitted on the outside of the limit rod. The first spring is located between the guide sleeve and the limit block. An operating frame is fixedly installed at the bottom end of the limit rod.
[0005] Preferably, the operating component includes an operating plate, which is fixedly installed on the telescopic end of the first electric push rod. A connecting rod is fixedly installed on the upper side wall of the operating plate, and a cone is connected to one end of the connecting rod. The cone is movably embedded in the operating frame.
[0006] Preferably, the feeder includes a fixed frame, which is fixedly installed on the top of the left side upright plate. Several material pipes are fixedly installed on one side of the fixed frame, and the bottom ends of the material pipes are connected to a transfer box. A conveying pump is connected to one side of the transfer box, and a hose is connected to the liquid outlet end of the conveying pump. A third electric push rod is horizontally installed at the center of the lower end of the fixed frame. The telescopic end of the third electric push rod is connected to a feeding pipe, and one end of the feeding pipe is connected to the hose. A closed door is fixedly installed on one side of the upper end of the drum body, and a lever is fixedly installed on the other side of the fixed frame.
[0007] Preferably, the closed door includes a closed frame, which is fixedly installed on the side wall of the drum body. A vertical door is movably fitted inside the closed frame. A toggle block is connected to the top of the vertical door. A fixed plate is fixedly installed on one side of the upper end of the drum body. Two slide rails are fixedly installed at both ends of the side wall of the fixed plate. The two ends of the toggle block are movably fitted onto the outside of the two slide rails. A second spring is connected to the center of the top of the toggle block. The top of the second spring is connected to the top of the fixed plate.
[0008] Preferably, the actuator includes a fourth electric push rod, which is vertically installed at the center of the other side of the fixing frame. The telescopic end of the fourth electric push rod is connected to a toggle plate, and one end of the toggle plate is located below the toggle block.
[0009] Preferably, the driver includes an annular groove located on one side of the outer wall of the drum body, a motor is fixedly embedded at the center of the right side plate side wall, a drive wheel is fixedly installed at the drive end of the motor, and a transmission belt is movably fitted on the drive wheel and the outer side of the annular groove.
[0010] Preferably, one of the shafts is a hollow shaft, one end of which is connected to a rotating flange, and the other end of which is connected to a funnel.
[0011] A clean Nappa sofa leather preparation device and its usage method include the following steps; Step S1: Inject the leather to be processed into the drum body, then confirm that the arc-shaped door is located in the two sliding grooves, the limiting block at the top of the limiting rod is embedded in the limiting groove on the outer wall of the drum body, the first spring is in the normal state, and the closed door is in the closed position. Step S2: Connect several material pipes to the corresponding reagent tanks and inject the chemical reagents into the transfer box as needed; Step S3: Activate the toggle, the fourth electric push rod retracts, the toggle plate pushes the toggle block to move upward along the two slide rails, the vertical plate door moves upward within the closed frame, the second spring is compressed, and the opening on the side wall of the drum body opens. Step S4: The third electric push rod extends and inserts one end of the feeding pipe into the opening. The delivery pump works, and the medicine is injected into the drum body through the hose and the feeding pipe. After the injection is completed, the third electric push rod resets, the actuator resets, and the second spring drives the vertical plate door to reset and close the opening. Step S5: Start the motor. The motor drives the drive wheel to rotate, which in turn drives the annular groove and the drum body to rotate via the transmission belt. This process the internal leather. If auxiliary feeding, venting, or liquid introduction is required, it can be done through the hollow shaft, rotating flange, and funnel. Step S6: After processing is completed, stop the motor and wait for the drum body to stop. Start the discharge controller and the second electric push rod will work. Adjust the angle of the first electric push rod in the first hinge seat so that one end of the operating part corresponds to the operating frame at the bottom of the limit rod. Step S7: The first electric push rod extends outward, so that the cone in the operating component is embedded in the operating frame. The inclined surface of the cone contacts the lower inner wall of the operating frame, pushing the operating frame downward. The limiting rod moves down along the guide sleeve, and the limiting block separates from the limiting groove, releasing the arc-shaped door body from the limiting position. Step S8: The first electric push rod retracts, the connection between the connecting rod and the cone head locks the lower end of the operating frame, and the operating frame and the arc-shaped door are pulled to move to one side along the two slides to expose the lower opening of the drum body for unloading; Step S9: Reset and lock the arc-shaped door. After unloading, the first electric push rod extends outward, and the side wall of the operating panel pushes the operating frame to reset, thus resetting the arc-shaped door. The second electric push rod extends, and the first spring resets at the same time, causing the limit rod and limit block to move upward along the guide sleeve. The top of the limit block is embedded in the limit groove, thus relocking the arc-shaped door. Step S10: Remove the operating component. By cooperating with the first and second electric push rods, the operating component is removed from the operating frame, and the equipment returns to its initial state without affecting the normal rotation of the drum body.
[0012] The present invention provides a clean Nappa sofa leather preparation equipment and its usage method. This technical solution effectively solves the problems of existing Nappa sofa leather preparation equipment, such as large pollution from manual feeding, inconvenient discharge, poor sealing and low degree of cleanliness, through the cooperation of structures such as feeder, discharge controller and driver. The feeder is located at the top of the left vertical plate to realize the centralized conveying and automatic addition of various chemical materials, avoiding spillage and volatilization caused by manual dumping, significantly improving the workshop environment and enhancing the level of clean production. The set toggle can automatically open the vertical plate door. After the material is added, the second spring drives the vertical plate door to reset and close, thereby reducing the escape of chemical materials and air pollution during the material adding process. The discharge controller is installed on the lower side wall of the left vertical plate. It assists in discharge through the second electric push rod and the operating parts, which facilitates the automatic or semi-automatic discharge of materials in the drum body. This avoids close contact between the operator and the door, improving the safety and efficiency of discharge. The mounting bracket, guide sleeve, limit rod, limit block, first spring and limit groove structure in the door body ensures the reliable locking of the arc-shaped door body in the closed state, preventing the door body from being accidentally opened when the drum rotates. It achieves integrated coordination of drum body rotation, automatic feeding, automatic opening and closing of the sealing door, and material discharge control, and has beneficial effects such as high degree of automation, safe operation, reliable sealing, reduced material waste and environmental pollution, and improved consistency and cleanliness of Nappa sofa leather production. Attached Figure Description
[0013] Figure 1 This is a front-view three-dimensional structural diagram of the clean Nappa sofa leather preparation equipment and usage method described in this invention.
[0014] Figure 2 This is a rear-view three-dimensional structural diagram of the clean Nappa sofa leather preparation equipment and usage method described in this invention.
[0015] Figure 3 This is a bottom-view three-dimensional structural diagram of the clean Nappa sofa leather preparation equipment and usage method described in this invention.
[0016] Figure 4 This is a schematic diagram of the feeder structure of the clean Nappa sofa leather preparation equipment and usage method described in this invention.
[0017] Figure 5 This is a bottom-view three-dimensional structural diagram of the discharge controller of the clean Nappa sofa leather preparation equipment and usage method described in this invention.
[0018] Figure 6 This is a three-dimensional structural diagram of the feeder of the clean Nappa sofa leather preparation equipment and usage method described in this invention.
[0019] Figure 7 This is an enlarged structural diagram of point A of the clean Nappa sofa leather preparation equipment and usage method described in this invention.
[0020] In the diagram: 1. Base plate; 2. Left side upright plate; 3. Right side upright plate; 4. Shaft seat; 5. Shaft body; 6. Drum body; 7. Side plate; 8. First hinge seat; 9. Second hinge seat; 10. First electric push rod; 11. Second electric push rod; 12. Slide groove; 13. Curved door body; 14. Mounting bracket; 15. Guide sleeve; 16. Limiting rod; 17. Limiting block; 18. Limiting groove; 19. First spring; 20. Operating frame; 21. Operating panel; 22. Connecting rod. 23. Cone head; 24. Fixing frame; 25. Material pipe; 26. Transfer box; 27. Conveying pump; 28. Hose; 29. Third electric push rod; 30. Feeding pipe; 31. Enclosed frame; 32. Vertical door; 33. Actuating block; 34. Fixing plate; 35. Slide rail; 36. Second spring; 37. Fourth electric push rod; 38. Actuating plate; 39. Annular groove; 40. Motor; 41. Drive wheel; 42. Transmission belt; 43. Rotating flange; 44. Funnel. Detailed Implementation
[0021] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-7 As shown, a clean Nappa sofa leather preparation equipment and its usage method are described.
[0022] Example: A clean Nappa sofa leather preparation equipment includes a base plate 1, a left vertical plate 2 fixedly installed on the upper left side of the base plate 1, a right vertical plate 3 fixedly installed on the upper right side of the base plate 1, two bearing seats 4 fixedly installed at the top of the left vertical plate 2 and the right vertical plate 3, two shafts 5 movably embedded in the two bearing seats 4, a drum body 6 fixedly installed between the two shafts 5, a feeder fixedly installed on the upper end of the left vertical plate 2, a discharge controller fixedly installed on the lower side wall of the left vertical plate 2, a driver connected to the outer wall of one end of the drum body 6, and the other end of the driver fixedly installed at the lower end of the right vertical plate 3; Specifically, in use, the operator first moves the device to the designated position, supports it with the base plate 1, and connects it to the designated control system. Then, the leather to be processed is injected into the drum body 6 through the discharge controller. Subsequently, the set driver operates, driving the drum body 6 and the two shafts 5 to rotate within the two bearing seats 4. Then, according to the processing requirements of the leather, the specified chemical agent is injected into the drum body 6 through the feeder. The rotation achieves uniform contact and penetration between the leather and the chemical agent. After processing, the drum body 6 is rotated to the designated angle, and then the discharge controller operates to pour out the material in the drum body 6.
[0023] In the specific implementation process, the discharge controller includes a side plate 7, which is fixedly installed on the lower side wall of the left vertical plate 2. A first hinge seat 8 is fixedly installed at the center of the side plate 7, and a second hinge seat 9 is fixedly installed at the lower end of the side plate 7. A first electric push rod 10 is hinged to the first hinge seat 8 through a shaft 5, and a second electric push rod 11 is hinged to the second hinge seat 9 through a shaft 5. The telescopic end of the second electric push rod 11 is hinged to the side wall of the first electric push rod 10, and an operating component is connected to the telescopic end of the first electric push rod 10. A door is fixedly installed at the center of the outer wall of the drum body 6.
[0024] The door body includes two sliding grooves 12, which are located on both sides of the lower end of the outer wall of the drum body 6. An arc-shaped door body 13 is movably fitted in the two sliding grooves 12. The upper wall of the arc-shaped door body 13 slides against the outer wall of the drum body 6. A mounting bracket 14 is fixedly installed on one side of the lower end of the arc-shaped door body 13. A guide sleeve 15 is fixedly installed at one end of the mounting bracket 14. A limit rod 16 is movably fitted in the guide sleeve 15. A limit block 17 is fixedly installed at the top of the limit rod 16. A limit groove 18 is opened at the lower end of the outer wall of the drum body 6. The top of the limit block 17 is movably fitted in the limit groove 18. A first spring 19 is movably fitted on the outside of the limit rod 16. The first spring 19 is located between the guide sleeve 15 and the limit block 17. An operating frame 20 is fixedly installed at the bottom end of the limit rod 16.
[0025] Specifically, when unloading the leather from the drum body 6, the second electric push rod 11 in the second hinge seat 9 first operates, changing the angle of the first electric push rod 10 in the first hinge seat 8 so that one end of the operating member aligns with the operating frame 20 at the bottom of the limiting rod 16. Then, the first electric push rod 10 extends outward, embedding one end of the operating member into the operating frame 20. Subsequently, the second electric push rod 11 retracts, causing the first electric push rod 10 and the operating member to rotate downward in the first hinge seat 8, pulling the operating frame 20 and the limiting rod 16 downward within the guide sleeve 15 until the limiting block 17 at the top of the limiting rod 16 separates from the limiting groove 18, releasing the limiting operation of the arc-shaped door 13. Then, the first electric push rod 10 is driven to retract, pulling the operating frame... 20 and the arc-shaped door 13 move to one side until the arc-shaped door 13 moves to the designated position in the two slide grooves 12, exposing the opening at the lower end of the drum body 6, so that the leather unloading operation in the drum body 6 can be realized. After the unloading is completed, the first electric push rod 10 extends outward and pushes the operating frame 20 through the operating component until the arc-shaped door 13 is reset. Then the second electric push rod 11 extends, and under the reset action of the first spring 19, the limiting rod 16 and the limiting block 17 move upward in the guide sleeve 15 until the top of the limiting block 17 is embedded in the limiting groove 18, and the arc-shaped door 13 is slidably limited. Then, the first electric push rod 10 and the second electric push rod 11 cooperate to remove the operating component in the operating frame 20 without affecting the rotation effect of the drum body 6.
[0026] In the specific implementation process, the operating component includes an operating plate 21, which is fixedly installed on the telescopic end of the first electric push rod 10. A connecting rod 22 is fixedly installed on the upper side wall of the operating plate 21, and a cone 23 is connected to one end of the connecting rod 22. The cone 23 is movably embedded in the operating frame 20.
[0027] Specifically, when operating the arc-shaped door 13, the cone 23 at one end of the connecting rod 22 is embedded into the operating frame 20. The inclined surface of the cone 23 contacts the lower inner wall of the operating frame 20. The first electric push rod 10 pushes the cone 23 and the operating plate 21 closer to the operating frame 20. Under the action of the inclined surface of the cone 23, the operating frame 20 moves downward as a whole until the limiting block 17 separates from the limiting groove 18. The bottom height of the cone 23 is lower than the connecting rod 22. After the limiting block 17 separates from the limiting groove 18, the cone 23 completely penetrates the operating frame 20. The lower end of the operating frame 20 is locked by the connection between the connecting rod 22 and the cone 23. Then, the first electric push rod 10 retracts, which can drive the arc-shaped door 13 to move. When it is necessary to reset the arc-shaped door 13, the side wall of the operating plate 21 contacts the operating frame 20, which can push the operating frame 20 to reset.
[0028] In the specific implementation process, the feeder includes a fixed frame 24, which is fixedly installed on the top of the left vertical plate 2. Several material pipes 25 are fixedly installed on one side of the fixed frame 24. The bottom ends of the material pipes 25 are connected to a transfer box 26. A transfer pump 27 is connected to one side of the transfer box 26. A hose 28 is connected to the liquid outlet end of the transfer pump 27. A third electric push rod 29 is horizontally installed at the center of the lower end of the fixed frame 24. The telescopic end of the third electric push rod 29 is connected to a feeding pipe 30. One end of the feeding pipe 30 is connected to the hose 28. A closed door is fixedly installed on one side of the upper end of the drum body 6. A toggle is fixedly installed on the other side of the fixed frame 24.
[0029] Specifically, when injecting chemical agents, several feed pipes 25 can be connected to designated agent tanks. Then, according to the injection requirements, the designated chemical agents are injected into the transfer box 26. Subsequently, the set actuator operates to open the closed door on one side of the drum body 6. Then, the set third electric push rod 29 operates to insert one end of the feed pipe 30 into the closed door. Then, the conveying pump 27 on one side of the transfer box 26 operates to inject the chemical agents in the transfer box 26 into the drum body 6 through the hose 28 and the feed pipe 30, thus realizing the automatic addition of chemical agents.
[0030] In the specific implementation process, the closed door includes a closed frame 31, which is fixedly installed on the side wall of the drum body 6. A vertical door 32 is movably embedded in the closed frame 31. A toggle block 33 is connected to the top of the vertical door 32. A fixed plate 34 is fixedly installed on one side of the upper end of the drum body 6. Two slide rails 35 are fixedly installed at both ends of the side wall of the fixed plate 34. The two ends of the toggle block 33 are movably fitted on the outside of the two slide rails 35. A second spring 36 is connected to the center of the top of the toggle block 33. The top of the second spring 36 is connected to the top of the fixed plate 34.
[0031] Specifically, when injecting the chemical agent, the set actuator operates, and the actuator contacts the bottom end of the actuator block 33, causing the actuator block 33 and the vertical plate door 32 to move upward within the closed frame 31. Under the action of the two slide rails 35, the actuator block 33 is kept vertically upward, while the second spring 36 at the top of the actuator block 33 is squeezed until the vertical plate door 32 rises to the designated position, exposing the opening on the side wall of the drum body 6. Then, the third electric push rod 29 operates to insert one end of the feed tube into the opening to inject the chemical agent. After the injection is completed, the actuator resets, and under the reset action of the second spring 36, the vertical plate door 32 and the actuator block 33 are reset as a whole, and the vertical plate door 32 closes the opening on one side of the drum body 6.
[0032] In the specific implementation process, the actuator includes a fourth electric push rod 37, which is vertically installed at the center of the other side of the fixed frame 24. The telescopic end of the fourth electric push rod 37 is connected to a toggle plate 38, and one end of the toggle plate 38 is located below the toggle block 33.
[0033] Specifically, when injecting chemical agents, the fourth electric push rod 37 retracts, causing the upper end of the actuating plate 38 at its telescopic end to contact the bottom end of the actuating block 33. As the fourth electric push rod 37 continues to retract, it can drive the actuating block 33 and the vertical plate door 32 to move upward, thereby opening the opening on one side of the drum body 6.
[0034] In the specific implementation process, the driver includes an annular groove 39, which is located on one side of the outer wall of the drum body 6. A motor 40 is fixedly embedded in the center of the side wall of the right vertical plate 3. A drive wheel 41 is fixedly installed at the drive end of the motor 40. A transmission belt 42 is movably fitted on the drive wheel 41 and the outer side of the annular groove 39.
[0035] Specifically, when driving the drum body 6, the motor 40 is activated, which drives the drive wheel 41 to rotate at a constant speed. Under the connection of the transmission belt 42, the annular groove 39 and the drum body 6 can be driven to rotate, thus realizing the processing operation of leather.
[0036] In the specific implementation process, one of the shafts 5 is a hollow shaft 5, one end of which is connected to a rotating flange 43, and the other end of the rotating flange 43 is connected to a funnel 44.
[0037] Specifically, it facilitates auxiliary feeding, venting, or liquid introduction from the shaft end, improving the flexibility of equipment use.
[0038] A clean Nappa sofa leather preparation device and its usage method include the following steps; Step S1: Inject the leather to be processed into the drum body, then confirm that the arc-shaped door is located in the two sliding grooves, the limiting block at the top of the limiting rod is embedded in the limiting groove on the outer wall of the drum body, the first spring is in the normal state, and the closed door is in the closed position. Step S2: Connect several material pipes to the corresponding reagent tanks and inject the chemical reagents into the transfer box as needed; Step S3: Activate the toggle, the fourth electric push rod retracts, the toggle plate pushes the toggle block to move upward along the two slide rails, the vertical door moves upward within the closed frame, the second spring is compressed, and the opening on the side wall of the drum body opens. Step S4: The third electric push rod extends and inserts one end of the feeding pipe into the opening. The delivery pump works, and the medicine is injected into the drum body through the hose and the feeding pipe. After the injection is completed, the third electric push rod resets, the actuator resets, and the second spring drives the vertical plate door to reset and close the opening. Step S5: Start the motor. The motor drives the drive wheel to rotate, which in turn drives the annular groove and the drum body to rotate via the transmission belt. This process the internal leather. If auxiliary feeding, venting, or liquid introduction is required, it can be done through the hollow shaft, rotating flange, and funnel. Step S6: After processing is completed, stop the motor and wait for the drum body to stop. Start the discharge controller and the second electric push rod will work. Adjust the angle of the first electric push rod in the first hinge seat so that one end of the operating part corresponds to the operating frame at the bottom of the limit rod. Step S7: The first electric push rod extends outward, so that the cone in the operating component is embedded in the operating frame. The inclined surface of the cone contacts the lower inner wall of the operating frame, pushing the operating frame downward. The limiting rod moves down along the guide sleeve, and the limiting block separates from the limiting groove, releasing the arc-shaped door body from the limiting position. Step S8: The first electric push rod retracts, the connection between the connecting rod and the cone head locks the lower end of the operating frame, and the operating frame and the arc-shaped door are pulled to one side along the two slides to expose the lower opening of the drum body for unloading; Step S9: Reset and lock the arc-shaped door. After unloading, the first electric push rod extends outward, and the side wall of the operating panel pushes the operating frame to reset, thus resetting the arc-shaped door. The second electric push rod extends, and the first spring resets at the same time, causing the limit rod and limit block to move upward along the guide sleeve. The top of the limit block is embedded in the limit groove, thus relocking the arc-shaped door. Step S10: Remove the operating component. By cooperating with the first and second electric push rods, the operating component is removed from the operating frame, and the equipment returns to its initial state without affecting the normal rotation of the drum body.
[0039] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.
Claims
1. A clean Nappa sofa leather preparation device, comprising a base plate (1), characterized in that, A left vertical plate (2) is fixedly installed on the upper left side of the base plate (1), and a right vertical plate (3) is fixedly installed on the upper right side of the base plate (1). Two bearing seats (4) are fixedly installed at the top of the left vertical plate (2) and the right vertical plate (3). Two shafts (5) are movably embedded in the two bearing seats (4). A drum body (6) is fixedly installed between the two shafts (5). A feeder is fixedly installed on the upper end of the left vertical plate (2). A discharge controller is fixedly installed on the lower side wall of the left vertical plate (2). A driver is connected to the outer wall of one end of the drum body (6). The other end of the driver is fixedly installed on the lower end of the right vertical plate (3). The discharge controller includes a side plate (7), which is fixedly installed on the lower side wall of the left side plate (2). A first hinge seat (8) is fixedly installed at the center of the side plate (7), and a second hinge seat (9) is fixedly installed at the lower end of the side plate (7). A first electric push rod (10) is hinged to the first hinge seat (8) through a shaft (5), and a second electric push rod (11) is hinged to the second hinge seat (9) through a shaft (5). The telescopic end of the second electric push rod (11) is hinged to the side wall of the first electric push rod (10), and an operating component is connected to the telescopic end of the first electric push rod (10). A door is fixedly installed at the center of the outer wall of the drum body (6).
2. The clean Nappa sofa leather preparation equipment according to claim 1, characterized in that, The door includes two sliding grooves (12), which are located on both sides of the lower end of the outer wall of the drum body (6). An arc-shaped door (13) is movably fitted in the two sliding grooves (12). The upper wall of the arc-shaped door (13) slides against the outer wall of the drum body (6). A mounting bracket (14) is fixedly installed on one side of the lower end of the arc-shaped door (13). A guide sleeve (15) is fixedly installed at one end of the mounting bracket (14). A movable part is fitted in the guide sleeve (15). A limiting rod (16) is provided, with a limiting block (17) fixedly installed at the top of the limiting rod (16). A limiting groove (18) is provided at the lower end of the outer wall of the drum body (6). The top of the limiting block (17) is movably embedded in the limiting groove (18). A first spring (19) is movably fitted on the outside of the limiting rod (16). The first spring (19) is located between the guide sleeve (15) and the limiting block (17). An operating frame (20) is fixedly installed at the bottom of the limiting rod (16).
3. The clean Nappa sofa leather preparation equipment according to claim 2, characterized in that, The operating component includes an operating plate (21), which is fixedly installed on the telescopic end of the first electric push rod (10). A connecting rod (22) is fixedly installed on the upper side wall of the operating plate (21), and a cone (23) is connected to one end of the connecting rod (22). The cone (23) is movably embedded in the operating frame (20).
4. The clean Nappa sofa leather preparation equipment according to claim 1, characterized in that, The feeder includes a fixed frame (24), which is fixedly installed on the top of the left side plate (2). Several material pipes (25) are fixedly installed on one side of the fixed frame (24). The bottom ends of the material pipes (25) are connected to a transfer box (26). A transfer pump (27) is connected to one side of the transfer box (26). A hose (28) is connected to the liquid outlet end of the transfer pump (27). A third electric push rod (29) is horizontally installed at the center of the lower end of the fixed frame (24). The telescopic end of the third electric push rod (29) is connected to a feeding pipe (30). One end of the feeding pipe (30) is connected to the hose (28). A closed door is fixedly installed on one side of the upper end of the drum body (6). A toggle is fixedly installed on the other side of the fixed frame (24).
5. The clean Nappa sofa leather preparation equipment according to claim 4, characterized in that, The closed door includes a closed frame (31), which is fixedly installed on the side wall of the drum body (6). A vertical door (32) is movably installed inside the closed frame (31). A toggle block (33) is connected to the top of the vertical door (32). A fixed plate (34) is fixedly installed on one side of the upper end of the drum body (6). Two slide rails (35) are fixedly installed at both ends of the side wall of the fixed plate (34). The two ends of the toggle block (33) are movably fitted on the outside of the two slide rails (35). A second spring (36) is connected to the center of the top of the toggle block (33). The top of the second spring (36) is connected to the top of the fixed plate (34).
6. The clean Nappa sofa leather preparation equipment according to claim 5, characterized in that, The actuator includes a fourth electric push rod (37), which is vertically installed at the center of the other side of the fixed frame (24). The telescopic end of the fourth electric push rod (37) is connected to a toggle plate (38), and one end of the toggle plate (38) is located below the toggle block (33).
7. The clean Nappa sofa leather preparation equipment according to claim 1, characterized in that, The driver includes an annular groove (39) located on one side of the outer wall of the drum body (6). A motor (40) is fixedly embedded in the center of the side wall of the right side plate (3). A drive wheel (41) is fixedly installed at the drive end of the motor (40). A transmission belt (42) is movably fitted on the drive wheel (41) and the outer side of the annular groove (39).
8. The clean Nappa sofa leather preparation equipment according to claim 1, characterized in that, One of the shafts (5) is a hollow shaft (5), one end of which is connected to a rotating flange (43), and the other end of which is connected to a funnel (44).
9. A clean Nappa sofa leather preparation equipment and its usage method, characterized in that, Includes the following steps; Step S1: Inject the leather to be processed into the drum body, then confirm that the arc-shaped door is located in the two sliding grooves, the limiting block at the top of the limiting rod is embedded in the limiting groove on the outer wall of the drum body, the first spring is in the normal state, and the closed door is in the closed position. Step S2: Connect several material pipes to the corresponding reagent tanks and inject the chemical reagents into the transfer box as needed; Step S3: Activate the toggle, the fourth electric push rod retracts, the toggle plate pushes the toggle block to move upward along the two slide rails, the vertical door moves upward within the closed frame, the second spring is compressed, and the opening on the side wall of the drum body opens. Step S4: The third electric push rod extends and inserts one end of the feeding pipe into the opening. The delivery pump works, and the medicine is injected into the drum body through the hose and the feeding pipe. After the injection is completed, the third electric push rod resets, the actuator resets, and the second spring drives the vertical plate door to reset and close the opening. Step S5: Start the motor. The motor drives the drive wheel to rotate, which in turn drives the annular groove and the drum body to rotate via the transmission belt. This process the internal leather. If auxiliary feeding, venting, or liquid introduction is required, it can be done through the hollow shaft, rotating flange, and funnel. Step S6: After processing is completed, stop the motor and wait for the drum body to stop. Start the discharge controller and the second electric push rod will work. Adjust the angle of the first electric push rod in the first hinge seat so that one end of the operating part corresponds to the operating frame at the bottom of the limit rod. Step S7: The first electric push rod extends outward, so that the cone in the operating component is embedded in the operating frame. The inclined surface of the cone contacts the lower inner wall of the operating frame, pushing the operating frame downward. The limiting rod moves down along the guide sleeve, and the limiting block separates from the limiting groove, releasing the arc-shaped door body from the limiting position. Step S8: The first electric push rod retracts, the connection between the connecting rod and the cone head locks the lower end of the operating frame, and the operating frame and the arc-shaped door are pulled to move to one side along the two slides to expose the lower opening of the drum body for unloading; Step S9: Reset and lock the arc-shaped door. After unloading, the first electric push rod extends outward, and the side wall of the operating panel pushes the operating frame to reset, thus resetting the arc-shaped door. The second electric push rod extends, and at the same time the first spring returns to its original position, causing the limit rod and limit block to move upward along the guide sleeve. The top of the limit block is embedded in the limit groove, thus re-locking the arc-shaped door body. Step S10: Remove the operating component. By cooperating with the first and second electric push rods, the operating component is removed from the operating frame, and the equipment returns to its initial state without affecting the normal rotation of the drum body.