Waste glue recovery control system in viscose filament yarn production system

Abstract

The utility model discloses a waste glue recovery control system in a viscose filament yarn production system, which comprises a viscose filtering section, a waste glue collecting tank A, a pre-filtering unit, a stepped filtering unit and a defoaming section, wherein a continuous passage for producing, treating and recycling waste glue is formed among the viscose filtering section, the waste glue collecting tank A, the pre-filtering unit, the stepped filtering unit and the defoaming section; the waste glue collecting tank A is connected with a feeding hole of the pre-filtering unit through a conveying pipe I; the pre-filtering unit is connected with a feeding hole of the stepped filtering unit through a conveying pipe II; the control system comprises a pre-filtering control unit arranged on the pre-filtering unit, a step filtering control unit arranged on the step filtering unit, a man-machine interface and a PLC (Programmable Logic Controller), the pre-filtering control unit and the step filtering control unit are respectively and electrically connected with the PLC in a bidirectional way, and the man-machine interface is electrically connected with the PLC in a bidirectional way. The device is applied to a recovery system in a viscose filament yarn production system, and the recovery system is automatically controlled, so that the manual intervention is reduced, and the waste glue filtering quality and the filtering efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of viscose filaments in the textile industry, in particular to a waste rubber recovery control system in a viscose filament production system. Background Art

[0002] In terms of cost, the production of viscose filament industry uses coniferous wood pulp, hardwood pulp, bamboo pulp and other multi-pulp mixed pulps. That is, in the viscose filament multi-pulp production system, there are large differences in the indicators of different varieties of pulp. For example, the fiber length of coniferous wood pulp is 3 to 5 times that of hardwood pulp. Bamboo pulp and recycled pulp have a high content of heterogeneous fibers due to the characteristics of raw materials. The combined use of multiple pulps will lead to the problem of poor uniformity of yellowing reaction, and the direct reaction in the later process is the increase of filtration waste rubber. Among them, the waste rubber is generated in the viscose filtration section, and the sources mainly include: KKF filter backwash waste rubber (80%), plate and frame filter disassembly and washing cavity rubber (15%), KKF filter equipment maintenance filter replacement cavity rubber (5%). Among them, the filtration system produces a large amount of waste rubber, and contains a high number of particles, ash, unswollen fibers and large particles of chemical fiber dust. It is difficult to purify it by simple filtration, so the recovery value is low and it needs to be discharged regularly. It not only causes environmental pressure, but also a waste of resources.

[0003] Therefore, the recycling of waste rubber in viscose filament production requires the collection, reprocessing and reuse of the waste rubber generated in the waste rubber filtration section in the recycling system in filament production. In order to achieve automated control of waste rubber recycling, it is necessary to study a recycling system applied to the viscose filament production system to automate the control of the recycling system, thereby reducing manual intervention and improving the quality and efficiency of waste rubber filtration. Summary of the invention

[0004] In view of the problem that the waste rubber recycling in the prior art requires automatic control of each process, the utility model provides a waste rubber recycling control system in a viscose filament production system. The utility model can be applied to the production process of collecting, filtering and purifying the waste rubber generated in the filament viscose production in stages, and then reused in the filament production, and automatically controls the recycling system; and realizes a continuous, efficient and stable production process.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a waste rubber recovery control system in a viscose filament production system, wherein the waste rubber recovery control system is arranged in the viscose filament waste rubber recovery system; the viscose filament waste rubber recovery system includes a continuous passage for waste rubber generation, treatment and recycling formed by a viscose filtration section, a waste rubber collection tank A, a pre-filtration unit, a step filtration unit and a degassing section, the waste rubber collection tank A is connected to the feed port of the pre-filtration unit through a conveying pipe I; the pre-filtration unit is connected to the feed port of the step filtration unit through a conveying pipe II; the waste rubber recovery control system includes a pre-filtration control unit arranged in the pre-filtration unit, a step filtration control unit arranged in the step filtration unit, a human-machine interface and a PLC controller, the pre-filtration control unit and the step filtration control unit are respectively bidirectionally electrically connected to the PLC controller, and the human-machine interface is bidirectionally electrically connected to the PLC controller.

[0006] Furthermore, the pre-filtration control unit includes a flow meter AI, a glue supply pump AI and an automatic regulating valve AI arranged on the delivery pipe I; the flow meter AI, the glue supply pump AI and the automatic regulating valve AI are arranged at the inlet end of the pre-filtration unit, and the inlet and outlet ends of each KKF filter in the pre-filtration unit are provided with a pressure transmitter AI; the flow meter AI, the glue supply pump AI, the automatic regulating valve AI and the pressure transmitter AI are connected to the PLC controller via electrical signals.

[0007] Furthermore, the step filtration control unit includes a flow meter BI, a glue supply pump BI, a pressure transmitter BI and an automatic regulating valve BI, and the flow meter BI, the glue supply pump BI, the pressure transmitter BI and the automatic regulating valve BI are arranged on the delivery pipe II; the flow meter BI, the glue supply pump BI, the pressure transmitter BI and the automatic regulating valve BI are connected to the PLC controller by electrical signals.

[0008] Furthermore, there are at least two step filter units, which are connected by a delivery pipe III; the step filter control unit also includes a glue supply pump BII, a pressure transmitter BII and an automatic regulating valve BII arranged on the delivery pipe III, and the glue supply pump BII, the pressure transmitter BII and the automatic regulating valve BII are electrically connected to the PLC controller.

[0009] Furthermore, the viscose filament waste rubber recycling system also includes a waste rubber collection tray A arranged at the bottom of the pre-filtration unit and a waste rubber collection tray B arranged at the bottom of the step filtration unit, the outlet end of the waste rubber collection tray A is connected to the waste rubber collection tank C through a delivery pipe IV, and the outlet end of the waste rubber collection tray B is connected to the waste rubber collection tank C through a delivery pipe V; both the delivery pipe IV and the delivery pipe V are provided with a glue supply pump CI, the outlet end of the waste rubber collection tank C is connected to the secondary filtration unit through a delivery pipe VI, and the delivery pipe VI is provided with a glue supply pump CII; the glue supply pump CI and the glue supply pump CII are electrically connected to the PLC controller.

[0010] Furthermore, the outlet ends of the step filtration units are connected to the waste rubber buffer tank B, the outlet end of the secondary filtration unit is connected to the waste rubber buffer tank C, the waste rubber buffer tank B is connected in series with the waste rubber buffer tank C and then connected to the degassing section, the waste rubber buffer tank B is connected to the waste rubber buffer tank C through the delivery pipe VII, and the delivery pipe VII is provided with a glue supply pump BIII; the inlet end of the delivery pipe II is connected to the outlet end of the waste rubber buffer tank A, and the inlet end of the waste rubber buffer tank A is connected to the pre-filtration unit through a pipeline; the waste rubber buffer tank A, the waste rubber buffer tank B and the waste rubber buffer tank C are all provided with a liquid level transmitter I on the top, and the liquid level transmitter I is electrically connected to the PLC controller.

[0011] Furthermore, a liquid level transmitter II is disposed on the upper part of the waste rubber collection tank A and the waste rubber collection tank C, and the liquid level transmitter II is connected to the PLC controller via an electrical signal.

[0012] Furthermore, the flow meter AI and the glue supply pump AI are connected via electrical signals.

[0013] Furthermore, the flow meter BI and the glue supply pump BI are connected via electrical signals.

[0014] Furthermore, it also includes a backwash control system applied to the KKF filter, the backwash control system includes a filter motor, a drain valve and a backwash motor, and the filter motor, the drain valve and the backwash motor are all connected to the PLC controller through electrical signals.

[0015] In summary, the beneficial effects brought by the utility model are:

[0016] 1. Realize the automatic control of the continuous passage for waste rubber generation, treatment and recycling between the viscose filtration section, waste rubber collection tank A, pre-filtration unit, cascade filtration unit and degassing section, realize a continuous, efficient and stable production process, reduce manual intervention, and achieve the purpose of improving production efficiency.

[0017] 2. By monitoring the pressure at the inlet and outlet of a single KKF filter, the backwash operation of the KKF filter can be adjusted by monitoring the pressure difference at both ends to ensure a continuous, efficient and stable production process.

[0018] 3. The pretreatment stage, cascade treatment stage and secondary waste rubber treatment stage of viscose filament are managed and monitored in stages to reduce waste and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the layout of the waste rubber recovery system and control system.

[0020] Figure 2 This is a schematic diagram of the structure of the pre-filtration control unit.

[0021] Figure 3 It is a schematic diagram of the structure of the cascade filtration control unit.

[0022] Figure 4 It is a schematic diagram of the secondary filtration control system structure.

[0023] The accompanying drawings are described as follows:

[0024] 1. Waste glue collection tank A; 2. Pre-filtration control unit; 21. Delivery pipe I; 22. Flow meter AI; 23. Glue supply pump AI; 24. Automatic regulating valve AI; 25. Pressure transmitter AI; 3. Cascade filtration control unit; 31. Delivery pipe II; 32. Flow meter BI; 33. Glue supply pump BI; 34. Pressure transmitter BI; 35. Automatic regulating valve BI; 36. Delivery pipe III; 37. Glue supply pump BII; 38. Pressure transmitter BII; 39. Automatic regulating valve BII; 5. Pre-filtration unit ; 51. Waste glue collection tray A; 52. Delivery pipe IV; 53. Glue supply pump CI; 54. Delivery pipe VI; 55. Glue supply pump CII; 56. Waste glue buffer tank C; 57. Waste glue buffer tank A; 58. Liquid level transmitter I; 6. Step filtration unit; 61. Waste glue collection tray B; 62. Delivery pipe V; 63. Waste glue buffer tank B; 64. Delivery pipe VII; 65. Glue supply pump BIII; 7. Secondary filtration unit; 71. Waste glue collection tank C; 72. Waste glue buffer tank C; 73. Liquid level transmitter II. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the embodiments.

[0026] like Figures 1 to 4As shown, a waste rubber recovery control system in a viscose filament production system, the waste rubber recovery control system is arranged in the viscose filament waste rubber recovery system; the viscose filament waste rubber recovery system includes a continuous passage for waste rubber generation, treatment and reuse formed by a viscose filtration section, a waste rubber collection tank A1, a pre-filtration unit 5, a step filtration unit 6 and a degassing section, the waste rubber collection tank A1 is connected to the feed port of the pre-filtration unit 5 through a conveying pipe I21; the pre-filtration unit 5 is connected to the feed port of the step filtration unit 6 through a conveying pipe II31; the waste rubber recovery control system includes a pre-filtration control unit 2 arranged in the pre-filtration unit 5, a step filtration control unit 3 arranged in the step filtration unit 6, a human-machine interface and a PLC controller, the pre-filtration control unit 2 and the step filtration control unit 3 are respectively bidirectionally electrically connected to the PLC controller, and the human-machine interface is bidirectionally electrically connected to the PLC controller.

[0027] The viscose filament waste rubber recovery system is a continuous passage for waste rubber generation, treatment and reuse formed between the viscose filtration section, the waste rubber collection tank A1, the pre-filtration unit 5, the step filtration unit 6 and the degassing section. The waste rubber generated by the corresponding pre-filtration, step filtration and the corresponding KKF filter and plate and frame filter is filtered on this continuous passage and reused in the filament production to achieve the purpose of improving production efficiency, product quality and reducing human intervention. The PLC controller is connected to the human-machine interface to realize the functions of logic control, timing, counting, sequence control, etc., to monitor and control the production process, and the operating status, process parameters and other information of the equipment are displayed in graphics, text and other ways. The operator can control the equipment to meet the production process and process requirements.

[0028] During implementation, the pre-filtration control unit 2 includes a flow meter AI22, a glue supply pump AI23 and an automatic regulating valve AI24 arranged on the delivery pipe I21; the flow meter AI22, the glue supply pump AI23 and the automatic regulating valve AI24 are arranged at the inlet end of the pre-filtration unit 5, and the inlet and outlet ends of each KKF filter in the pre-filtration unit 5 are provided with a pressure transmitter AI25; the flow meter AI22, the glue supply pump AI23, the automatic regulating valve AI24 and the pressure transmitter AI25 are electrically connected to the PLC controller.

[0029] Flow meter AI22 and pressure transmitter AI25 are used to collect information. Flow meter AI22 can monitor the flow velocity or flow rate of waste rubber in conveying pipe I21 and provide flow data to the controller. It can also help operators monitor and control the production process to ensure process stability and product quality. The pre-filtration equipment uses a fully automatic online backwash filter (KKF filter). The number of pre-filtration units 5 is arranged according to the amount of waste rubber. Multiple KKF filters are arranged in parallel in each pre-filtration unit 5. In this recovery system, the purpose is to reduce the flow rate due to blockage after the KKF filter has filtered for a period of time, so backwashing is required. The backwashing usually takes 20 minutes, so multiple KKF filters and pre-filtration units 5 are set to ensure the filtration flow rate. The filtration flux of the KKF filter is 0.7~1.3 m³ / unit•hour, and the pressure difference (△P) between the feed port and the discharge port of the KKF filter is ≤3.5bar. The automatic regulating valve AI24 is used to adjust the inlet pressure. When the actual pressure difference is greater than the pressure difference setting value, backwashing is performed. When the actual pressure difference is less than or equal to the pressure difference setting value, the filtration operation continues. Therefore, it is necessary to reasonably monitor the inlet and outlet pressure and flow rate of a single KKF filter to ensure that when the flow rate decreases, some KKF filters can be automatically controlled to achieve automatic backwashing. The pressure transmitter AI25 is set at the inlet and outlet of the KKF filter for monitoring and is used to measure the pressure of the fluid in the pipeline or equipment. Operators can monitor and control the production process based on the pressure data to ensure equipment safety and process stability. Among them, the flow meter AI22 can be connected to the glue supply pump AI23 electrical signal as an auxiliary monitoring.

[0030] During implementation, the step filtration control unit 3 includes a flow meter BI32, a glue supply pump BI33, a pressure transmitter BI34 and an automatic regulating valve BI35, and the flow meter BI32, the glue supply pump BI33, the pressure transmitter BI34 and the automatic regulating valve BI35 are arranged on the delivery pipe II31; the flow meter BI32, the glue supply pump BI33, the pressure transmitter BI34 and the automatic regulating valve BI35 are connected to the PLC controller by electrical signals.

[0031] The flow meter BI32 and the pressure transmitter BI34 are used to collect information about the waste rubber after being processed by the pre-filtration unit in the conveying pipe II31. The flow meter BI32 can monitor the flow rate or flow of the waste rubber in the conveying pipe II and provide the flow data to the controller. It can also help operators monitor and control the production process to ensure process stability and product quality. The pressure transmitter BI34 is set at the inlet end of the cascade filtration unit for monitoring and is used to measure the pressure of the fluid in the pipeline or equipment. Operators can monitor and control the production process based on the pressure data to ensure equipment safety and process stability. The automatic regulating valve BI35 is set on the conveying pipe II31 to adjust the inlet pressure of the cascade filtration unit. Among them, the flow meter BI32 can be connected to the rubber supply pump BI33 electrical signal as an auxiliary monitoring.

[0032] During implementation, there are at least two cascade filter units 6, which are connected in series through a delivery pipe III36; the cascade filter control unit 3 also includes a glue supply pump BII37, a pressure transmitter BII38 and an automatic regulating valve BII39 arranged on the delivery pipe III36, and the glue supply pump BII37, the pressure transmitter BII38 and the automatic regulating valve BII39 are connected to the PLC controller by electrical signals. The pressure transmitter BII38 monitors the conveying pressure of the waste glue from the previous cascade filter unit to the next cascade filter unit, and collects the inlet and outlet pressure difference of each cascade filter unit with the pressure transmitter BI34 and other pressure transmitters BII38.

[0033] During implementation, the waste rubber recycling system for viscose filaments further includes a waste rubber collection tray A51 disposed at the bottom of the pre-filtering unit 5 and a waste rubber collection tray B61 disposed at the bottom of the step filtering unit 6, the outlet end of the waste rubber collection tray A51 is connected to the waste rubber collection tank C71 through a delivery pipe IV52, and the outlet end of the waste rubber collection tray B61 is connected to the waste rubber collection tank C71 through a delivery pipe V62; both the delivery pipes IV52 and V62 are provided with a rubber supply pump CI53, the outlet end of the waste rubber collection tank C71 is connected to the secondary filtering unit 7 through a delivery pipe VI54, and the delivery pipe VI54 is provided with a rubber supply pump CII55; the rubber supply pump CI53 and the rubber supply pump CII55 are connected to the PLC controller by electrical signals. The waste rubber collection tank C71 collects the waste rubber in each tray through the rubber supply pump CI53, and the rubber supply pump CII55 delivers the secondary waste rubber in the waste rubber collection tank C71 to the secondary filtering unit 7 for filtration when a certain amount of waste rubber is collected.

[0034] During implementation, the outlet end of the step filtration unit 6 is connected to the waste rubber buffer tank B63, the outlet end of the secondary filtration unit 7 is connected to the waste rubber buffer tank C56, the waste rubber buffer tank B63 is connected in series with the waste rubber buffer tank C56 and then connected to the degassing section, the waste rubber buffer tank B63 is connected to the waste rubber buffer tank C56 through the delivery pipe VII64, and the delivery pipe VII64 is provided with a rubber supply pump BIII65; the inlet end of the delivery pipe II31 is connected to the outlet end of the waste rubber buffer tank A57, and the inlet end of the waste rubber buffer tank A57 is connected to the pre-filtration unit 5 through a pipeline; the waste rubber buffer tank A57, the waste rubber buffer tank B63 and the waste rubber buffer tank C56 are all provided with a liquid level transmitter I58 on the top, and the liquid level transmitter I58 is connected to the PLC controller by electrical signals. The waste rubber collection tank A1 and the waste rubber collection tank C71 are both provided with a liquid level transmitter II73 on the top, and the liquid level transmitter II73 is connected to the PLC controller by electrical signals. The function of the liquid level transmitter I58 and the liquid level transmitter II73 is to monitor the liquid level height in the waste rubber buffer tank and the collection tank in real time, and transmit the liquid level information to the PLC controller. By processing and analyzing the liquid level data through the PLC controller, the automatic control and monitoring of the waste rubber buffer tank and the collection tank can be realized. Therefore, the liquid level transmitter needs to be connected to the PLC controller to realize automatic control. At the same time, the operator can also observe the display data of the liquid level transmitter as a monitoring alarm to understand the liquid level of the waste rubber buffer tank and the collection tank as a reference for operation. When multiple waste rubber collection tanks are set in parallel, the liquid level transmitter can be used as a controller to collect signals for the valve control on the waste rubber collection tank. The liquid level transmitter is set in the middle or upper part of the tank body.

[0035] In this embodiment, a backwash control system applied to the KKF filter is also included, the backwash control system includes a filter motor, a drain valve and a backwash motor, and the filter motor, the drain valve and the backwash motor are all connected to the PLC controller through electrical signals. According to the pressure difference setting value, the filter motor and the backwash motor are controlled to start and stop. When the actual pressure difference is greater than the pressure difference setting value, the filter motor stops, the backwash motor starts to backwash, and the drain valve is opened. When the actual pressure difference is less than or equal to the pressure difference setting value, the filtering operation continues.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waste rubber recovery control system in a viscose filament production system, characterized in that: The waste rubber recovery control system is arranged in the viscose filament waste rubber recovery system; The waste rubber recycling system for viscose filaments comprises a continuous passage for waste rubber generation, treatment and recycling formed by a viscose filtration section, a waste rubber collection tank A (1), a pre-filtration unit (5), a step filtration unit (6) and a degassing section, wherein the waste rubber collection tank A (1) is connected to a feed inlet of the pre-filtration unit (5) via a delivery pipe I (21); the pre-filtration unit (5) is connected to a feed inlet of the step filtration unit (6) via a delivery pipe II (31); The waste rubber recovery control system comprises a pre-filtering control unit (2) arranged in a pre-filtering unit (5), a step-filtering control unit (3) arranged in a step-filtering unit (6), a human-machine interface and a PLC controller, wherein the pre-filtering control unit (2) and the step-filtering control unit (3) are respectively bidirectionally electrically connected to the PLC controller, and the human-machine interface is bidirectionally electrically connected to the PLC controller.

2. The waste rubber recovery control system in the viscose filament production system according to claim 1, characterized in that: The pre-filtration control unit (2) comprises a flow meter AI (22), a glue supply pump AI (23) and an automatic regulating valve AI (24) arranged on the delivery pipe I (21); the flow meter AI (22), the glue supply pump AI (23) and the automatic regulating valve AI (24) are arranged at the inlet end of the pre-filtration unit (5), and the inlet end and the outlet end of each KKF filter in the pre-filtration unit (5) are provided with a pressure transmitter AI (25); the flow meter AI (22), the glue supply pump AI (23), the automatic regulating valve AI (24) and the pressure transmitter AI (25) are connected to the PLC controller via electrical signals.

3. The waste rubber recovery control system in the viscose filament production system according to claim 1, characterized in that: The cascade filtration control unit (3) comprises a flow meter BI (32), a glue supply pump BI (33), a pressure transmitter BI (34) and an automatic regulating valve BI (35); the flow meter BI (32), the glue supply pump BI (33), the pressure transmitter BI (34) and the automatic regulating valve BI (35) are arranged on the delivery pipe II (31); the flow meter BI (32), the glue supply pump BI (33), the pressure transmitter BI (34) and the automatic regulating valve BI (35) are connected to the PLC controller via electrical signals.

4. The waste rubber recovery control system in the viscose filament production system according to claim 3, characterized in that: There are at least two step filter units (6), and the step filter units (6) are connected via a delivery pipe III (36); the step filter control unit (3) further comprises a glue supply pump BII (37), a pressure transmitter BII (38) and an automatic regulating valve BII (39) arranged on the delivery pipe III (36); the glue supply pump BII (37), the pressure transmitter BII (38) and the automatic regulating valve BII (39) are connected to the PLC controller via electrical signals.

5. The waste rubber recovery control system in the viscose filament production system according to claim 4, characterized in that: The viscose filament waste rubber recycling system further comprises a waste rubber collection tray A (51) arranged at the bottom of the pre-filtering unit (5) and a waste rubber collection tray B (61) arranged at the bottom of the step filtering unit (6); the outlet end of the waste rubber collection tray A (51) is connected to the waste rubber collection tank C (71) through a delivery pipe IV (52), and the outlet end of the waste rubber collection tray B (61) is connected to the waste rubber collection tank C (71) through a delivery pipe V (62); a rubber supply pump CI (53) is arranged on the delivery pipe IV (52) and the delivery pipe V (62); the outlet end of the waste rubber collection tank C (71) is connected to the secondary filtering unit (7) through a delivery pipe VI (54), and a rubber supply pump CII (55) is arranged on the delivery pipe VI (54); the rubber supply pump CI (53) and the rubber supply pump CII (55) are connected to the PLC controller by electrical signals.

6. The waste rubber recovery control system in the viscose filament production system according to claim 5, characterized in that: The outlet ends of the step filtration units (6) are connected to the waste rubber buffer tank B (63), the outlet end of the secondary filtration unit (7) is connected to the waste rubber buffer tank C (56), the waste rubber buffer tank B (63) is connected in series with the waste rubber buffer tank C (56) and then connected to the degassing section, the waste rubber buffer tank B (63) is connected to the waste rubber buffer tank C (56) through a delivery pipe VII (64), and a rubber supply pump BIII (65) is provided on the delivery pipe VII (64); the inlet end of the delivery pipe II (31) is connected to the outlet end of the waste rubber buffer tank A (57), and the inlet end of the waste rubber buffer tank A (57) is connected to the pre-filtration unit (5) through a pipeline; the waste rubber buffer tank A (57), the waste rubber buffer tank B (63) and the waste rubber buffer tank C (56) are all provided with a liquid level transmitter I (58) on the upper part, and the liquid level transmitter I (58) is connected to the PLC controller with an electrical signal.

7. The waste rubber recovery control system in the viscose filament production system according to claim 5, characterized in that: The waste rubber collection tank A (1) and the waste rubber collection tank C (71) are both provided with a liquid level transmitter II (73) on their upper parts, and the liquid level transmitter II (73) is connected to the PLC controller via an electrical signal.

8. The waste rubber recovery control system in the viscose filament production system according to claim 2, characterized in that: The flow meter AI (22) and the glue supply pump AI (23) are connected via electrical signals.

9. The waste rubber recovery control system in the viscose filament production system according to claim 3, characterized in that: The flow meter BI (32) and the glue supply pump BI (33) are connected via electrical signals.

10. The waste rubber recovery control system in the viscose filament production system according to claim 1, characterized in that: It also includes a backwash control system applied to the KKF filter, the backwash control system includes a filter motor, a drain valve and a backwash motor, and the filter motor, the drain valve and the backwash motor are all connected to a PLC controller via electrical signals.

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