Drying oven system for synthetic leather production

Abstract

The invention relates to a drying oven system for synthetic leather production, which comprises a first drying oven and a first spray tower, the first drying oven is arranged in a workshop, the top of the first drying oven is fixedly connected with a first branch pipe, the top of the first branch pipe is fixedly connected with a first negative pressure pipe, and the tail end of the first negative pressure pipe is provided with a first fan; the spacing distance between the first branch pipes is 1 meter, a second oven is arranged on the side edge of the first oven, a third oven is arranged on the side edge of the second oven, a second spraying tower is arranged on the side edge of the first spraying tower, a third spraying tower is arranged on the side edge of the second spraying tower, and the top of the second oven is fixedly connected with a second branch pipe. The top of the third drying oven is fixedly connected with a third branch pipe, the top of the third branch pipe is fixedly connected with a third negative pressure pipe, the number of discharge pipes is increased, the air volume is reduced, waste gas is extracted, heat loss is avoided, energy is saved, the productivity is improved, and enterprise benefits are increased.

Description

Technical Field

[0001] The invention relates to the technical field of synthetic leather production, in particular to an oven system for synthetic leather production. Background Art

[0002] The production process of synthetic leather is an integration of wet and dry production. The production process of synthetic leather generally consists of two steps. The first step is to make the slurry into a base using a wet production process, and the second step is dry transfer veneer, that is, using the release paper method, the prepared film fabric and the base are laminated to form synthetic leather. Both the wet and dry processes of synthetic leather production involve an oven drying process. The oven used is a tunnel-type hot air drying oven. The synthetic leather is dried inside the oven by a hot air circulation system and then output from the other end of the oven. It undergoes constant speed drying and reduced speed drying processes in the oven in turn. Finally, the solvent in the material is completely volatilized, and the solid matter in the material is solidified on the synthetic leather. The DMF (dimethylformamide) mixed gas in the oven is transmitted to the spray tower through pipes and fans. The DMF (dimethylformamide) mixed gas reacts with water in the spray tower to form an aqueous solution, which is then distilled to obtain raw materials for synthetic leather production.

[0003] Patent application number: CN201410097846.1 discloses a plasticizing oven for an artificial leather and synthetic leather production line, including a box body, which is composed of a frame made of steel and an insulation board arranged outside the frame, the insulation board is filled with pressed aluminum silicate fiber blocks, a heat exchanger and a hot air blower located on one side of the heat exchanger are arranged at the bottom of the box body, the air inlet of the hot air blower is connected to the heat exchanger through an air suction hood, the air outlet of the hot air blower is connected to a vertical air supply pipe, the upper end of the vertical air supply pipe is connected to a horizontal air supply pipe located at the upper part of the box body, Both ends of the horizontal air supply pipe are blocked, and a nozzle for spraying hot air downward is arranged on the lower surface of the horizontal air supply pipe along the length direction, and an exhaust pipe is arranged on the top of the box body. The heat exchanger includes a bracket, and a plurality of heat dissipation pipes are arranged in parallel on the bracket. The two ends of the heat dissipation pipes are connected in sequence through U-shaped pipes, and the inlet of the lowest heat dissipation pipe is connected to the oil inlet pipe, and the uppermost heat dissipation pipe is connected to the oil outlet pipe. The surface of the heat dissipation pipe is provided with heat dissipation fins, and the heat dissipation pipe is made of seamless steel pipe, and the heat dissipation fins are made of aluminum pipes that are inserted into the heat dissipation pipe by a rolling process and are tightly attached to the outer surface of the heat dissipation pipe. The heat-sending fan comprises a motor, a casing and an impeller, the impeller is arranged in the casing, the impeller comprises a circular plate and an annular plate arranged in parallel and coaxially, a circle of blades is evenly arranged between the circular plate and the annular plate along the circumferential direction, a mounting seat connected to the main shaft of the motor is arranged at the center of the circular plate, an air inlet pipe section and an air outlet pipe section are arranged on the casing, the center line of the air inlet pipe section coincides with the center line of the impeller, the center line of the air outlet pipe section is perpendicular to the center line of the impeller, the air inlet pipe section is connected to the inner edge of the annular plate, and the inlet of the air outlet pipe section faces the blades; a row of air outlets are arranged horizontally in the box body. A roller for lifting the product to move is located below the air nozzle; a set of ovens is composed of at least two unit ovens, each unit oven is 3 meters, 4 meters or 5 meters long, each unit oven is connected to an exhaust pipe on the top, all the exhaust pipe outlets are connected to an exhaust main pipe, an exhaust fan is arranged on the exhaust main pipe, a feed port is arranged on the upper part of the front end surface of the first unit oven, a discharge port is arranged on the upper part of the rear end surface of the last unit oven, and gas hoods connected to adjacent exhaust pipes are arranged on the upper part of the feed port and the upper part of the discharge port.

[0004] However, each unit oven is connected to the top of an exhaust pipe, and the distance between the exhaust pipes is about 3 meters to 5 meters. The effective range of the bottom of each exhaust pipe is 3 meters to 5 meters. The exhaust fan on the exhaust main pipe needs to maintain high power operation to ensure that the exhaust main pipe and multiple exhaust pipes have sufficient negative pressure for exhaust, which consumes a lot of energy. At the same time, the air volume of the exhaust main pipe and multiple exhaust pipes is large, and the heat energy in the box is discharged with the wind, causing serious waste. Summary of the invention

[0005] The present invention aims to solve the problems existing in the above-mentioned prior art and provide an oven system for synthetic leather production, which can increase the number of exhaust pipes and reduce the air volume, effectively extract exhaust gas and avoid heat loss, save energy, improve production capacity and increase enterprise benefits.

[0006] The present invention solves the technical problem by adopting a technical solution: the oven system for synthetic leather production comprises a first oven and a first spray tower, the first oven is inside a workshop, an inlet is provided at the front side of the first oven, an outlet is provided at the end of the first oven, the synthetic leather reaches the inside of the first oven through the inlet, and the synthetic leather leaves the inside of the first oven through the outlet, a first branch pipe is fixedly connected to the top of the first oven, a first negative pressure pipe is fixedly connected to the top of the first branch pipe, a first fan is arranged at the end of the first negative pressure pipe, the first fan is connected to the first spray tower, there are multiple first branch pipes, the interval between the multiple first branch pipes is 1 meter, a second oven is arranged on the side of the first oven, and a third oven is arranged on the side of the second oven A second spray tower is arranged on the side of the first spray tower, and a third spray tower is arranged on the side of the second spray tower. The first spray tower, the second spray tower and the third spray tower are all outside the workshop. The second oven and the third oven are also provided with inlets and outlets. A second branch pipe is fixedly connected to the top of the second oven, a second negative pressure pipe is fixedly connected to the top of the second branch pipe, a second fan is arranged at the end of the second negative pressure pipe, and the second fan is connected to the second spray tower. A third branch pipe is fixedly connected to the top of the third oven, a third negative pressure pipe is fixedly connected to the top of the third branch pipe, a third fan is arranged at the end of the third negative pressure pipe, and the third fan is connected to the third spray tower. There are multiple second branch pipes and multiple third branch pipes respectively, and the interval distance between multiple second branch pipes is 1 meter The interval between the multiple third branch pipes is 1 meter. The synthetic leather is dried in the first oven, the second oven and the third oven respectively. The first fan, the first spray tower, the second fan, the second spray tower, the third fan and the third spray tower are kept running. The multiple first branch pipes absorb the DMF mixed gas in the first oven. The DMF mixed gas passes through the first negative pressure pipe and the first fan in turn and finally reaches the first spray tower for treatment. The multiple second branch pipes absorb the DMF mixed gas in the second oven. The DMF mixed gas passes through the second negative pressure pipe and the second fan in turn and finally reaches the second spray tower for treatment. The multiple third branch pipes absorb the DMF mixed gas in the third oven. The DMF mixed gas The gas passes through the third negative pressure pipe and the third fan in turn and finally reaches the third spray tower for treatment. In the same oven, the distance between the branch pipes is 1 meter. The effective range of absorbing DMF mixed gas at the bottom of each branch pipe is about 1 meter on average. The effective distance and air volume required for each branch pipe are reduced on average, and the operating power of the fan is reduced in time. The smaller air volume and wind speed meet the needs of absorbing DMF mixed gas, and pass through the negative pressure pipe and the fan in turn and are finally transmitted to the spray tower for treatment. At the same time, the smaller air volume and wind speed can keep the heat in the oven stable, increase the number of discharge pipes and reduce the air volume, effectively extract the exhaust gas and avoid heat loss, save energy, improve production capacity and increase corporate benefits.

[0007] For further improvement, the first oven, multiple first branch pipes, the first negative pressure pipe, the first fan and the first spray tower and other parts are used as an operation production line. There are three similar operation production lines. The structures and principles of the three operation production lines are highly unified. Referring to one of the operation production lines is convenient for setting up more operation production lines, and the high flexibility can meet more production and processing needs.

[0008] To be further improved, the internal heating method of the first oven, the second oven and the third oven is steam heating, and transmission devices are arranged on the front side, the end and the interior of the first oven, the second oven and the third oven, and the synthetic leather is pulled and transmitted by the transmission device. Steam heating is a commonly used heating method, which is convenient to obtain and widely used.

[0009] Further improvement, the first oven, the second oven and the third oven are composed of multiple partitions, each partition is spliced ​​by multiple insulation boards with a width of 1 meter, each insulation board on the top of the oven is connected to two branch pipes, the length of the partition is adjusted according to actual needs, with strong flexibility and convenient operation, and multiple branch pipes are divided into two columns, which effectively support the negative pressure pipe and further improve the absorption effect of DMF mixed gas.

[0010] To further improve, the diameters of the first branch pipe, the second branch pipe and the third branch pipe are the same, and the diameter range is 150mm-200mm. The first branch pipe, the second branch pipe and the third branch pipe with the same diameter are unified as a whole and have a high degree of versatility. The first branch pipe, the second branch pipe and the third branch pipe with smaller diameters can meet the requirements of the absorption and transmission of the DMF mixed gas while effectively saving materials and reducing costs.

[0011] To further improve, the diameters of the first negative pressure tube, the second negative pressure tube and the third negative pressure tube are the same, and the diameter range is 300mm-350mm. While the first negative pressure tube, the second negative pressure tube and the third negative pressure tube meet the transmission requirements of the DMF mixed gas, the diameters are reduced to reduce the overall weight, thereby improving stability and safety.

[0012] Further improvement, a first operating room is provided in the middle of the first oven, there are multiple first operating rooms, a first transmission pipe is fixedly connected to the top of the first operating room, there are multiple first transmission pipes, a first top pipe is fixedly connected to the top of the first transmission pipe, a first valve is fixedly connected to the end of the first top pipe, a fourth negative pressure pipe is fixedly connected to the side of the first valve, a fourth fan is provided at the end of the fourth negative pressure pipe, a fourth spray tower is provided on the side of the fourth fan, the fourth fan and the first valve are controlled by a PLC program, a small amount of DMF mixed gas is contained in multiple first operating rooms, the first transmission pipe, the first top pipe, the first valve, the fourth negative pressure pipe and the fourth fan are used to transmit the DMF mixed gas to the fourth spray tower for processing, when the first oven stops operating, the PLC program is used to control the first valve, the first valve is closed, and then the PLC program is used to control the fourth fan, so that the operating power of the fourth fan is reduced, flexible configuration reduces energy loss, and saves production costs.

[0013] Further improvement, the fourth negative pressure pipe is fixedly connected to the side with a second valve, the second valve is controlled by a PLC program, the second valve is fixedly connected to the side with a second top pipe, the second top pipe is fixedly connected to the bottom with a second transmission pipe, a second operating room is arranged in the middle of the second oven, the second transmission pipe is connected to the second operating room, there are multiple second operating rooms and second transmission pipes respectively, and multiple second operating rooms contain a small amount of DMF mixed gas. The second transmission pipe, the second top pipe, the second valve, the fourth negative pressure pipe and the fourth fan are used to transmit the DMF mixed gas to the fourth spray tower for treatment. When the second oven stops operating, the PLC program is used to control the second valve, the second valve is closed, and then the PLC program is used to control the fourth fan to reduce the operating power of the fourth fan, and the flexible configuration reduces energy loss and saves production costs.

[0014] Further improvement, the fourth negative pressure pipe is fixedly connected to the side with a third valve, the third valve is controlled by a PLC program, the third valve is fixedly connected to the side with a third top pipe, the third top pipe is fixedly connected to the bottom with a third transmission pipe, a third operating room is arranged in the middle of the third oven, the third transmission pipe is connected to the third operating room, there are multiple third operating rooms and multiple third transmission pipes, and multiple third operating rooms contain a small amount of DMF mixed gas. The third transmission pipe, the third top pipe, the third valve, the fourth negative pressure pipe and the fourth fan are used to transmit the DMF mixed gas to the fourth spray tower for treatment. When the third oven stops operating, the PLC program is used to control the third valve, the third valve is closed, and then the PLC program is used to control the fourth fan to reduce the operating power of the fourth fan, and the flexible configuration reduces energy loss and saves production costs.

[0015] To further improve, the fourth spray tower is outside the workshop, and the intervals between the fourth spray tower, the third spray tower, the second spray tower and the first spray tower are equal. Multiple spray towers maintain a certain distance to reduce mutual influence and leave enough operating space to improve work efficiency.

[0016] The beneficial effects of the present invention are:

[0017] 1. The synthetic leather is dried in the first oven, the second oven and the third oven respectively, the first fan, the first spray tower, the second fan, the second spray tower, the third fan and the third spray tower are kept in operation, the multiple first branch pipes absorb the DMF mixed gas in the first oven, the DMF mixed gas passes through the first negative pressure pipe and the first fan in turn and finally reaches the first spray tower for treatment, the multiple second branch pipes absorb the DMF mixed gas in the second oven, the DMF mixed gas passes through the second negative pressure pipe and the second fan in turn and finally reaches the second spray tower for treatment, the multiple third branch pipes absorb the DMF mixed gas in the third oven, the DMF mixed gas passes through the third The negative pressure pipe and the third fan finally reach the third spray tower for treatment. On the same oven, the interval between the branch pipes is 1 meter. The average effective range of absorbing DMF mixed gas at the bottom of each branch pipe is about 1 meter. The average effective distance and air volume required for each branch pipe are reduced, and the operating power of the fan is reduced in time. The smaller air volume and wind speed meet the needs of absorbing DMF mixed gas, and are transmitted to the spray tower for treatment through the negative pressure pipe and the fan in turn. At the same time, the smaller air volume and wind speed keep the heat in the oven stable, increase the number of discharge pipes to reduce the air volume, effectively extract the exhaust gas and avoid heat loss, save energy, increase production capacity and increase corporate benefits.

[0018] 2. The first branch pipe, the second branch pipe and the third branch pipe of the same diameter are unified as a whole, and the versatility is high. The first branch pipe, the second branch pipe and the third branch pipe with smaller diameters can meet the absorption and transmission of the DMF mixed gas, while effectively saving materials and reducing costs. The first negative pressure tube, the second negative pressure tube and the third negative pressure tube can meet the transmission of the DMF mixed gas, while the diameter is reduced to reduce the overall weight, improve stability and safety.

[0019] 3. A small amount of DMF mixed gas is contained in a plurality of first operating chambers, and the DMF mixed gas is transmitted to the fourth spray tower for treatment by using the first transmission pipe, the first top pipe, the first valve, the fourth negative pressure pipe and the fourth fan. When the first oven stops working, the first valve is controlled by the PLC program, and the first valve is closed. Then the fourth fan is controlled by the PLC program to reduce the operating power of the fourth fan. A small amount of DMF mixed gas is contained in a plurality of second operating chambers, and the DMF mixed gas is transmitted to the fourth spray tower for treatment by using the second transmission pipe, the second top pipe, the second valve, the fourth negative pressure pipe and the fourth fan. When the second oven stops working, the second blower is controlled by the PLC program. The valve is controlled, the second valve is closed, and then the PLC program is used to control the fourth fan to reduce the operating power of the fourth fan. A small amount of DMF mixed gas is contained in multiple third operating rooms. The DMF mixed gas is transmitted to the fourth spray tower for treatment by the third transmission pipe, the third top pipe, the third valve, the fourth negative pressure pipe and the fourth fan. When the third oven stops operating, the third valve is controlled by the PLC program, the third valve is closed, and then the PLC program is used to control the fourth fan to reduce the operating power of the fourth fan. Flexible configuration reduces energy loss and saves production costs. Multiple spray towers are kept at a certain distance to reduce mutual influence and leave enough operating space to improve operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present invention;

[0021] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 For the present invention Figure 1 Enlarged view of point B in the middle;

[0023] Figure 4 It is a back view showing the structure of the present invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged view of point C in the middle;

[0025] Figure 6 For the present invention Figure 4 Enlarged view of point D in the middle;

[0026] Figure 7 It is a front view of the structure of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged view of point E in the middle;

[0028] Fig. 9 For the present invention Figure 7 Enlarged view of point F in the middle;

[0029] Fig.10 For the present invention Figure 7 Enlarged view of point G in the middle;

[0030] Fig.11 It is a top view of the structure of the present invention;

[0031] Fig.12 For the present invention Fig.11 Enlarged view of H in the middle;

[0032] Fig.13 This is a diagram showing the wind activity of the first branch pipe of the present invention.

[0033] Explanation of the reference numerals: 1. first drying oven; 2. first spray tower; 3. inlet; 4. outlet; 5. first branch pipe; 6. first negative pressure pipe; 7. first fan; 8. second drying oven; 9. third drying oven; 10. second spray tower; 11. third spray tower; 12. second branch pipe; 13. second negative pressure pipe; 14. second fan; 15. third branch pipe; 16. third negative pressure pipe; 17. third fan; 18. first operating room; 19. first transmission pipe; 20. first top pipe; 21. first valve; 22. fourth negative pressure pipe; 23. fourth fan; 24. fourth spray tower; 25. second valve; 26. second top pipe; 27. second transmission pipe; 28. second operating room; 29. ​​third valve; 30. third top pipe; 31. third transmission pipe; 32. third operating room. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-13 This embodiment is further described:

[0035] like Figure 1-13As shown: In this embodiment, an oven system for synthetic leather production includes a first oven 1 and a first spray tower 2. The first oven 1 is inside the workshop. An inlet 3 is provided at the front side of the first oven 1, and an outlet 4 is provided at the end of the first oven 1. The synthetic leather reaches the inside of the first oven 1 through the inlet 3, and the synthetic leather leaves the inside of the first oven 1 through the outlet 4. A first branch pipe 5 is fixedly connected to the top of the first oven 1, and a first negative pressure pipe 6 is fixedly connected to the top of the first branch pipe 5. A first fan 7 is provided at the end of the first negative pressure pipe 6, and the first fan 7 is connected to the first spray tower 2. There are multiple first branch pipes 5, and the interval between the multiple first branch pipes 5 is 1 meter. A second oven 8 is arranged on the side of the first oven 1, and a third oven 9 is arranged on the side of the second oven 8. A second spray tower 10 is arranged on the side of the first spray tower 2, and a third spray tower 11 is arranged on the side of the second spray tower 10. The first spray tower 2, the second spray tower 10 and the third spray tower 11 are all outside the workshop. The second oven 8 and the third oven 9 are also provided with an inlet 3 and an outlet 4. The second oven 8 is fixedly connected to the top of the second branch pipe 12, and the top of the second branch pipe 12 is fixedly connected to A second negative pressure pipe 13 is provided at the end of the second negative pressure pipe 13. The second fan 14 is connected to the second spray tower 10. A third branch pipe 15 is fixedly connected to the top of the third oven 9. A third negative pressure pipe 16 is fixedly connected to the top of the third branch pipe 15. A third fan 17 is provided at the end of the third negative pressure pipe 16. The third fan 17 is connected to the third spray tower 11. There are multiple second branch pipes 12 and multiple third branch pipes 15, respectively. The spacing distance between the multiple second branch pipes 12 is 1 meter, and the spacing distance between the multiple third branch pipes 15 is 1 meter. The first oven 1, Multiple first branch pipes 5, first negative pressure pipes 6, first fans 7, first spray towers 2 and other parts serve as an operation production line. There are three similar operation production lines. The internal heating method of the first oven 1, the second oven 8 and the third oven 9 is steam heating. Transmission devices are arranged on the front side, the end and the inside of the first oven 1, the second oven 8 and the third oven 9. The first oven 1, the second oven 8 and the third oven 9 are composed of multiple partitions, each partition is composed of multiple insulation boards with a width of 1 meter, and each insulation board on the top of the oven is connected to two branch pipes.

[0036] like Figure 12-13 As shown: the first branch pipe 5, the second branch pipe 12 and the third branch pipe 15 have the same diameter size, which is in the range of 150mm-200mm; the first negative pressure pipe 6, the second negative pressure pipe 13 and the third negative pressure pipe 16 have the same diameter size, which is in the range of 300mm-350mm.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown: a first operating room 18 is arranged in the middle of the first oven 1, there are multiple first operating rooms 18, a first transmission pipe 19 is fixedly connected to the top of the first operating room 18, there are multiple first transmission pipes 19, a first top pipe 20 is fixedly connected to the top of the first transmission pipe 19, a first valve 21 is fixedly connected to the end of the first top pipe 20, a fourth negative pressure pipe 22 is fixedly connected to the side of the first valve 21, a fourth fan 23 is arranged at the end of the fourth negative pressure pipe 22, a fourth spray tower 24 is arranged on the side of the fourth fan 23, the fourth fan 23 and the first valve 21 are controlled by a PLC program, a second valve 25 is fixedly connected to the side of the fourth negative pressure pipe 22, the second valve 25 is controlled by a PLC program, a second top pipe 26 is fixedly connected to the side of the second valve 25, and the bottom of the second top pipe 26 is fixed A second transmission pipe 27 is connected, a second operating room 28 is arranged in the middle of the second drying oven 8, the second transmission pipe 27 is connected to the second operating room 28, and there are multiple second operating rooms 28 and second transmission pipes 27 respectively. A third valve 29 is fixedly connected to the side of the fourth negative pressure pipe 22, and the third valve 29 is controlled by a PLC program. A third top pipe 30 is fixedly connected to the side of the third valve 29, and a third transmission pipe 31 is fixedly connected to the bottom of the third top pipe 30. A third operating room 32 is arranged in the middle of the third drying oven 9, and the third transmission pipe 31 is connected to the third operating room 32. There are multiple third operating rooms 32 and third transmission pipes 31 respectively. The fourth spray tower 24 is outside the workshop, and the intervals between the fourth spray tower 24, the third spray tower 11, the second spray tower 10 and the first spray tower 2 are equal.

[0038] When the present invention is in use, the synthetic leather is dried in the first oven 1, the second oven 8 and the third oven 9 respectively, the synthetic leather is pulled and transmitted by a transmission device and heated by steam, the first fan 7, the first spray tower 2, the second fan 14, the second spray tower 10, the third fan 17 and the third spray tower 11 keep running, a plurality of first branch pipes 5 absorb the DMF mixed gas in the first oven 1, the DMF mixed gas passes through the first negative pressure pipe 6 and the first fan 7 in sequence and finally reaches the first spray tower 2 for treatment, a plurality of second branch pipes 12 absorb the DMF mixed gas in the second oven 8, the DMF mixed gas passes through the second negative pressure pipe 13 and the second fan 14 in sequence and finally reaches the second spray tower 10 for treatment, a plurality of third branch pipes 15 absorb the DMF mixed gas in the third oven 9, the DMF mixed gas passes through the third negative pressure pipe 16 and the third fan 17 in sequence and finally reaches the third spray tower 11 for treatment, and the diameter The smaller first branch pipe 5, the second branch pipe 12 and the third branch pipe 15 meet the requirements of the absorption and transmission of the DMF mixed gas, while effectively saving materials and reducing costs. The first negative pressure pipe 6, the second negative pressure pipe 13 and the third negative pressure pipe 16 meet the requirements of the transmission of the DMF mixed gas, while the diameter is reduced to reduce the overall weight, improve stability and safety. On the same oven, the interval between the branch pipes is 1 meter, and the effective range of absorbing the DMF mixed gas at the bottom of each branch pipe is about 1 meter on average. The effective distance and air volume required for each branch pipe are reduced on average, and the operating power of the fan is reduced in time. The smaller air volume and wind speed meet the requirements of the absorption of the DMF mixed gas, and are successively transmitted to the spray tower for processing through the negative pressure pipe and the fan. At the same time, the smaller air volume and wind speed make the heat in the oven stably maintained, increase the number of discharge pipes to reduce the air volume, effectively extract the exhaust gas and avoid heat loss, save energy, increase production capacity and increase corporate benefits;

[0039] A small amount of DMF mixed gas is contained in multiple first operating chambers 18, and the DMF mixed gas is transmitted to the fourth spray tower 24 by the first transmission pipe 19, the first top pipe 20, the first valve 21, the fourth negative pressure pipe 22 and the fourth fan 23 for treatment. A small amount of DMF mixed gas is contained in multiple second operating chambers 28, and the DMF mixed gas is transmitted to the fourth spray tower 24 by the second transmission pipe 27, the second top pipe 26, the second valve 25, the fourth negative pressure pipe 22 and the fourth fan 23 for treatment. A small amount of DMF mixed gas is contained in multiple third operating chambers 32, and the DMF mixed gas is transmitted to the fourth spray tower 24 by the third transmission pipe 31, the third top pipe 30, the third valve 29, the fourth negative pressure pipe 22 and the fourth fan 23 for treatment. When the first oven 1 stops operating In this state, the first valve 21 is controlled by the PLC program, and the first valve 21 is closed, and then the fourth fan 23 is controlled by the PLC program to reduce the operating power of the fourth fan 23. When the second oven 8 stops operating, the second valve 25 is controlled by the PLC program, and the second valve 25 is closed, and then the fourth fan 23 is controlled by the PLC program to reduce the operating power of the fourth fan 23. When the third oven 9 stops operating, the third valve 29 is controlled by the PLC program, and the third valve 29 is closed, and then the fourth fan 23 is controlled by the PLC program to reduce the operating power of the fourth fan 23. One of the valves can be paused, or multiple valves can be paused at the same time, and flexible configuration can be used to reduce energy loss and save production costs.

[0040] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An oven system for synthetic leather production, comprising a first oven (1) and a first spray tower (2), characterized in that: The first oven (1) is located inside the workshop. An inlet (3) is provided at the front side of the first oven (1). An outlet (4) is provided at the end of the first oven (1). The synthetic leather reaches the first oven (1) through the inlet (3). The synthetic leather leaves the first oven (1) through the outlet (4). A first branch pipe (5) is fixedly connected to the top of the first oven (1). A first negative pressure pipe (6) is fixedly connected to the top of the first branch pipe (5). A first fan (7) is provided at the end of the first negative pressure pipe (6). The first fan (7) is connected to the first spray tower (2). There are multiple first branch pipes (5). The interval between the multiple first branch pipes (5) is 1 meter. A second oven (8) is provided on the side of the first oven (1). A third oven (9) is provided on the side of the second oven (8). A second spray tower (10) is provided on the side of the first spray tower (2). A third spray tower (11) is provided on the side of the second spray tower (10). The first spray tower (2 ), the second spray tower (10) and the third spray tower (11) are all outside the workshop, the second oven (8) and the third oven (9) are also provided with an inlet (3) and an outlet (4), the second oven (8) is fixedly connected with a second branch pipe (12) at the top, the second branch pipe (12) is fixedly connected with a second negative pressure pipe (13) at the top, a second fan (14) is provided at the end of the second negative pressure pipe (13), the second fan (14) is connected to the second spray tower (10), and the third oven (9) is connected with a second negative pressure pipe (13). A third branch pipe (15) is fixedly connected to the top of the box (9), a third negative pressure pipe (16) is fixedly connected to the top of the third branch pipe (15), a third fan (17) is arranged at the end of the third negative pressure pipe (16), and the third fan (17) is connected to the third spray tower (11). There are a plurality of second branch pipes (12) and a plurality of third branch pipes (15), and the spacing between the plurality of second branch pipes (12) is 1 meter, and the spacing between the plurality of third branch pipes (15) is 1 meter.

2. The oven system for synthetic leather production according to claim 1, characterized in that: The first drying oven (1), the plurality of first branch pipes (5), the first negative pressure pipe (6), the first fan (7) and the first spray tower (2) and other parts serve as an operation production line, and there are three similar operation production lines.

3. The oven system for synthetic leather production according to claim 1, characterized in that: The internal heating method of the first oven (1), the second oven (8) and the third oven (9) is steam heating, and transmission devices are arranged on the front side, the end and the inside of the first oven (1), the second oven (8) and the third oven (9).

4. The oven system for synthetic leather production according to claim 1, characterized in that: The first oven (1), the second oven (8) and the third oven (9) are composed of a plurality of partitions, each of which is formed by splicing a plurality of insulation boards with a width of 1 meter, and each insulation board on the top of the oven is connected to two branch pipes.

5. The oven system for synthetic leather production according to claim 1, characterized in that: The diameters of the first branch pipe (5), the second branch pipe (12) and the third branch pipe (15) are the same, and the diameter range is 150 mm-200 mm.

6. The oven system for synthetic leather production according to claim 1, characterized in that: The diameters of the first negative pressure tube (6), the second negative pressure tube (13) and the third negative pressure tube (16) are the same, and the diameter range is 300 mm-350 mm.

7. The oven system for synthetic leather production according to claim 1, characterized in that: A first operating chamber (18) is arranged in the middle of the first drying oven (1), and there are a plurality of first operating chambers (18). A first transmission pipe (19) is fixedly connected to the top of the first operating chamber (18), and there are a plurality of first transmission pipes (19). A first top pipe (20) is fixedly connected to the top of the first transmission pipe (19), and a first valve (21) is fixedly connected to the end of the first top pipe (20), and a fourth negative pressure pipe (22) is fixedly connected to the side of the first valve (21), and a fourth fan (23) is arranged at the end of the fourth negative pressure pipe (22), and a fourth spray tower (24) is arranged on the side of the fourth fan (23), and the fourth fan (23) and the first valve (21) are controlled by a PLC program.

8. The oven system for synthetic leather production according to claim 7, characterized in that: The side of the fourth negative pressure pipe (22) is fixedly connected to a second valve (25), the second valve (25) is controlled by a PLC program, the side of the second valve (25) is fixedly connected to a second top pipe (26), the bottom of the second top pipe (26) is fixedly connected to a second transmission pipe (27), a second operating room (28) is arranged in the middle of the second oven (8), the second transmission pipe (27) is connected to the second operating room (28), and there are a plurality of second operating rooms (28) and a plurality of second transmission pipes (27), respectively.

9. The oven system for synthetic leather production according to claim 7, characterized in that: The side of the fourth negative pressure pipe (22) is fixedly connected to a third valve (29), the third valve (29) is controlled by a PLC program, the side of the third valve (29) is fixedly connected to a third top pipe (30), the bottom of the third top pipe (30) is fixedly connected to a third transmission pipe (31), a third operating chamber (32) is arranged in the middle of the third oven (9), the third transmission pipe (31) is connected to the third operating chamber (32), and there are a plurality of third operating chambers (32) and a plurality of third transmission pipes (31).

10. The oven system for synthetic leather production according to claim 7, characterized in that: The fourth spray tower (24) is outside the workshop, and the fourth spray tower (24), the third spray tower (11), the second spray tower (10) and the first spray tower (2) are spaced at equal distances from each other.

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