Clean and efficient cleaning structure for spandex production

Abstract

The utility model relates to the technical field of cleaning structures, in particular to a clean and efficient cleaning structure for spandex production, which comprises a cleaning tank, a material injection pipe communicated with the cleaning tank and capable of injecting DMAc solvent is arranged in the cleaning tank, a V1-2 control valve is arranged in the material injection pipe, a DW communicated with the cleaning tank is arranged outside the cleaning tank, and a V1-2 control valve is arranged in the DW. The cleaning structure comprises a cleaning tank and a DW communicated with the cleaning tank, a V1-1 control valve is arranged between the DW and the cleaning tank, an S3 communicated with the cleaning tank is arranged outside the cleaning tank, and a V1-3 control valve is arranged between the S3 and the cleaning tank. Environmental pollution caused by volatilization of a large amount of DMAc generated when the workpiece is lifted out after being cleaned in the assembly cleaning process can be eliminated, and the follow-up collection and disposal cost caused by air pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning structures, in particular to a cleaning structure for spandex production with high cleaning efficiency. Background Technique

[0002] In the traditional cleaning structure, the workpiece to be cleaned (such as components, spinnerets, filter elements, etc.) is placed in a cleaning tank, and the solvent DMAc is added, and it is heated to about 120°C for soaking or small-flow circulating cleaning. After cleaning, the workpiece needs to be taken out by opening the tank. At this time, the temperature cannot completely drop to room temperature, and due to the material shape of the workpiece, there may be a lot of DMAc remaining, which is taken out of the tank with the workpiece and volatilizes into the workshop environment. And because the workpiece needs to be moved, it is very difficult to install environmental control facilities such as suction hoods. Often, a large amount of DMAc will volatilize in the indoor air of the cleaning room in a short time, resulting in an excessive concentration, causing environmental protection and occupational health hazards. Even if the polluted indoor air is discharged from the cleaning room after ventilation and air change, it still needs to be further purified before being discharged into the atmosphere. After being diluted by the room air, the treatment difficulty and cost are significantly increased. If further water washing is carried out in the original cleaning tank, there will be a mixture of waste solvent and waste water, and the discharge destinations are inconsistent and need to be manually operated by the operator. In case of operation errors, an accident of mixing waste water and waste solvent will occur, which will cause the solvent refining operation to malfunction at least, and the sewage treatment station to collapse at worst. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In view of the deficiencies of the prior art, the utility model provides a cleaning structure for spandex production with high cleaning efficiency, and solves the problems put forward in the above background technique.

[0005] (II) Technical Solutions

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: a cleaning structure for spandex production with high cleaning efficiency, including a cleaning tank, a feeding pipe communicating with the cleaning tank and capable of injecting DMAc solvent is arranged in the cleaning tank, a V1-2 control valve is arranged in the feeding pipe, a DW communicating with the cleaning tank is arranged outside the cleaning tank, a V1-1 control valve is arranged between the DW and the cleaning tank, an S3 communicating with the cleaning tank is arranged outside the cleaning tank, and a V1-3 control valve is arranged between the S3 and the cleaning tank.

[0007] Furthermore, the water inlet end of the cleaning tank can be connected to the water outlet end of one of the cleaning tanks, and a Vent post-treatment device can be installed between the two cleaning tanks. A control butterfly valve can be provided at the water inlet end of the cleaning tank. An exhaust condenser pipe is provided between the control butterfly valve and the Vent post-treatment device. The upper end of the exhaust condenser pipe is connected to pipeline A, and pipeline A is connected to CHWS. The lower end of the exhaust condenser pipe is connected to pipeline B, and pipeline B is connected to CHWR. A V9 control valve is provided between pipeline B and CHWR. The bottom end of the exhaust condenser pipe is provided with a connection from WDMAc to the tank farm.

[0008] Furthermore, the water inlet end of the cleaning tank can be connected to the water outlet end of another cleaning tank, and a V1-4 control valve is provided between the cleaning tank and the other cleaning tank.

[0009] Furthermore, a water outlet pipe connected to the cleaning tank is provided outside the cleaning tank, and a steam trap can be provided in the water outlet pipe. A pipeline connected to the cleaning tank outside the cleaning tank can be connected to WW, a pipeline connected to the cleaning tank can be connected to the connection from WDMAc to the tank farm, and a DMAc circulation discharge pump is provided between the pipeline connected to cleaning tank 1 and the connection from WDMAc to the tank farm.

[0010] Furthermore, a V1-8 control valve and a V1-7 control valve are respectively provided in the pipeline between WW and the DMAc circulation discharge pump 37. A V1-10 control valve is provided in the pipeline between the DMAc circulation discharge pump and the connection from WDMAc to the tank farm. A V1-6 control valve for controlling the cleaning tank is provided in the pipeline between the DMAc circulation discharge pump and the V1-10 control valve. A V1-5 circulation valve is provided in the pipeline connecting the V1-7 control valve and the DMAc circulation discharge pump to the cleaning tank. A UT device is provided in the pipeline outside the cleaning tank that can be connected between the V1-8 control valve and the V1-7 control valve.

[0011] Furthermore, an air suction hood for ventilation can be provided at the control end of the cleaning tank. A monorail crane for transporting tubular materials is provided above the cleaning tank. A control panel can be provided in the cleaning tank.

[0012] Furthermore, a base for supporting the cleaning tank is provided at the bottom of the cleaning tank.

[0013] The features of the present invention are as follows: 1. A water washing step is embedded in the same tank, eliminating the need to remove the workpiece for re-water washing after the solvent cleaning step, thus avoiding the problem of DMAc volatilization and air pollution caused by workpiece handling; 2. Through PLC program control, the automation of the cleaning process is achieved. Through programs and interlocks, potential production accidents or environmental protection accident hazards caused by solvent cleaning and water washing in the same tank are prevented; 3. The automated operation of the cleaning step reduces the workload of operators; 4. By using a large-flow circulation pump and a unique design of the pump inlet and outlet pipelines, the effect of circulating flushing is improved, the time required for workpiece cleaning can be reduced, and the operation efficiency can be further enhanced.

[0014] Through the control panel, automatic operation modules for solvent cleaning, solvent discharge, water washing, and wastewater discharge are set, and each operation condition is preset. In case of special circumstances, the operator can manually change the operation conditions before starting. After the operator finishes hoisting and capping the workpiece, the corresponding cleaning tank is selected on the PLC touch screen operation interface to start the corresponding program. The PLC sequentially controls the opening and closing of various automatic valves for feeding, circulating, discharging, and exhausting, as well as the circulating (discharging) pump, and coordinates the operation to complete the cleaning process. And through interlocks, the valves and pumps are controlled to achieve safety protection and prevent production or environmental accidents.

[0015] Compared with the prior art, this cleaning structure for spandex production, which is clean and efficient

[0016] 1) Eliminates the environmental pollution caused by a large amount of DMAc volatilization during the lifting of the workpiece after cleaning in the component cleaning process, and reduces the subsequent collection and disposal costs caused by polluted air.

[0017] 2) Achieves the programming and automation of the cleaning process through PLC, reduces the labor burden of operators, and improves the consistency of cleaning effects.

[0018] 3) Eliminates potential production or environmental accident hazards caused by solvent and water washing in the same tank.

[0019] 4) Adopts a large-flow circulation pump and a special design of the inlet and outlet positions. During the cleaning process, the cleaning liquid has a strong flushing effect on the workpiece, further enhancing the cleaning effect and improving the operation efficiency of cleaning. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the cleaning tank of the present utility model.

[0022] In the figure: 1, cleaning tank; 5, monorail crane; 6, feeding pipe; 21, base; 23, water outlet pipe; 24, Vent post-treatment device; 25, control butterfly valve; 26, exhaust condenser pipe; 27, pipeline A; 28, pipeline B; 29, WDMAc to tank area; 30, V9 control valve; 31, V1-4 control valve; 32, V1-2 control valve; 33, V1-1 control valve; 34, V1-3 control valve; 35, steam trap; 37, DMAc circulating discharge pump; 38, V1-8 control valve; 39, V1-7 control valve; 40, V1-10 control valve; 41, V1-6 control valve; 42, V1-5 circulation valve; 43, UT device; 44, control panel; 45, suction hood. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Please refer to Figures 1 to 2, the present utility model provides a technical solution: a cleaning and efficient cleaning structure for spandex production, including a cleaning tank 1. In the cleaning tank 1, there is a feeding pipe 6 connected to the cleaning tank 1 and capable of injecting DMAc solvent. In the feeding pipe 6, there is a V1-2 control valve 32. Outside the cleaning tank 1, there is a DW connected to the cleaning tank 1, and between the DW and the cleaning tank 1, there is a V1-1 control valve 33. Outside the cleaning tank 1, there is an S3 connected to the cleaning tank 1, and between the S3 and the cleaning tank 1, there is a V1-3 control valve 34. The water inlet end of the cleaning tank 1 can be connected to the water outlet end of one of the cleaning tanks 1. A Vent post-treatment device 24 can be installed between the two cleaning tanks 1. The water inlet end of the cleaning tank 1 can be provided with a control butterfly valve 25. Between the control butterfly valve 25 and the Vent post-treatment device 24, there is an exhaust condenser pipe 26. The upper end of the exhaust condenser pipe 26 is connected to a pipeline A27, and the pipeline A27 is connected to CHWS. The lower end of the exhaust condenser pipe 26 is connected to a pipeline B28, and the pipeline B28 is connected to CHWR. Between the pipeline B28 and CHWR, there is a V9 control valve 30. At the bottom end of the exhaust condenser pipe 26, there is a WDMAc to the tank area 29. The water inlet end of the cleaning tank 1 can be connected to the water outlet end of another cleaning tank 1. Between the cleaning tank 1 and another cleaning tank 1, there is a V1-4 control valve 31. Outside the cleaning tank 1, there is a water outlet pipe 23 connected to the cleaning tank 1. A steam trap 35 can be provided in the water outlet pipe 23. Outside the cleaning tank 1, a pipeline that can be connected to the cleaning tank 1 can be connected to WW, and a pipeline connected to the cleaning tank 1 can be connected to the WDMAc to the tank area 29. Between the pipeline connected to the cleaning tank 1 and the WDMAc to the tank area 29, there is a DMAc circulation discharge pump 37. In the pipeline between WW and the DMAc circulation discharge pump 37, there are respectively a V1-8 control valve 38 and a V1-7 control valve 39. In the pipeline between the DMAc circulation discharge pump 37 and the WDMAc to the tank area 29, there is a V1-10 control valve 40. In the pipeline between the DMAc circulation discharge pump 37 and the V1-10 control valve 40, there is a V1-6 control valve 41 capable of controlling the cleaning tank 1. In the pipeline between the V1-7 control valve 39 and the DMAc circulation discharge pump 37 and connected to the cleaning tank 1, there is a V1-5 circulation valve 42. Outside the cleaning tank 1, in the pipeline that can be connected between the V1-8 control valve 38 and the V1-7 control valve 39, there is a UT device 43. The control end of the cleaning tank 1 can be provided with an air suction hood 45 for ventilation. Above the cleaning tank 1, there is a monorail crane 5 capable of transporting tubular materials. In the cleaning tank 1, there can be a control panel 44. At the bottom of the cleaning tank 1, there is a base 21 for supporting the cleaning tank 1.

[0025] All the electrical components appearing in this article are electrically connected to the external main controller and 380V commercial power, and the main controller can be a conventional known device such as a computer for control.

[0026] In the description of this specification, terms such as "connection", "installation", "fixation", "setting", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and technical effects, or it can be an integral connection or a partial connection. In the case of this example, for those of ordinary skill in the art, the specific meanings of the above terms in this utility model or the utility model can be understood according to specific circumstances.

[0027] As mentioned above, the above are only the preferred specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by this utility model, according to the technical solution of this utility model and its utility model concept, makes equivalent replacements or changes, and all should be covered within the protection scope of this utility model.

Claims

1. A clean and efficient cleaning structure for spandex production, comprising a cleaning tank (1), characterized in that: The cleaning tank (1) is provided with an injection pipe (6) which is connected to the cleaning tank (1) and can inject DMAc solvent, and the injection pipe (6) is provided with a V1-2 control valve (32). The outside of the cleaning tank (1) is provided with a DW which is connected to the cleaning tank (1), and a V1-1 control valve (33) is provided between the DW and the cleaning tank (1). The outside of the cleaning tank (1) is provided with an S3 which is connected to the cleaning tank (1), and a V1-3 control valve (34) is provided between the S3 and the cleaning tank (1).

2. A clean and efficient cleaning structure for spandex production according to claim 1, characterized in that: The water inlet end of the cleaning tank (1) can be connected to the water outlet end of one of the cleaning tanks (1), a Vent post-treatment device (24) can be installed between the two cleaning tanks (1), a control butterfly valve (25) can be provided at the water inlet end of the cleaning tank (1), an exhaust condenser pipe (26) is provided between the control butterfly valve (25) and the Vent post-treatment device (24), the upper end of the exhaust condenser pipe (26) is connected to a pipeline A (27), the pipeline A (27) is connected to a CHWS, the lower end of the exhaust condenser pipe (26) is connected to a pipeline B (28), the pipeline B (28) is connected to a CHWR, a V9 control valve (30) is provided between the pipeline B (28) and the CHWR, and a WDMAc to tank area (29) is provided at the bottom end of the exhaust condenser pipe (26).

3. A clean and efficient cleaning structure for spandex production according to claim 1, characterized in that: The water inlet end of the cleaning tank (1) can be connected to the water outlet end of another cleaning tank (1), and a V1-4 control valve (31) is provided between the cleaning tank (1) and the other cleaning tank (1).

4. A clean and efficient cleaning structure for spandex production according to claim 1, characterized in that: The cleaning tank (1) is provided with a water outlet pipe (23) connected to the cleaning tank (1) on the outside, and a drain valve (35) can be provided in the water outlet pipe (23). The cleaning tank (1) is provided with a pipeline connected to the cleaning tank (1) on the outside, which can be connected to WW. The pipeline connected to the cleaning tank (1) can be connected to WDMAc to the tank area (29). A DMAc circulation discharge pump (37) is provided between the pipeline connected to the cleaning tank (1) and WDMAc to the tank area (29).

5. A clean and efficient cleaning structure for spandex production according to claim 4, characterized in that: A V1-8 control valve (38) and a V1-7 control valve (39) are respectively provided in the pipeline between the WW and DMAc circulation discharge pumps (37); a V1-10 control valve (40) is provided in the pipeline between the DMAc circulation discharge pump (37) and the WDMAc to the tank area (29); a V1-6 control valve (41) capable of controlling the cleaning tank (1) is provided in the pipeline between the DMAc circulation discharge pump (37) and the V1-10 control valve (40); a V1-5 circulation valve (42) is provided in the pipeline between the V1-7 control valve (39) and the DMAc circulation discharge pump (37) and connected to the cleaning tank (1); and a UT device (43) is provided in the pipeline outside the cleaning tank (1) capable of connecting to the V1-8 control valve (38) and the V1-7 control valve (39).

6. A clean and efficient cleaning structure for spandex production according to claim 1, characterized in that: The control end of the cleaning tank (1) can be provided with an air suction hood (45) for ventilation, a monorail crane (5) capable of conveying tubular materials is provided above the cleaning tank (1), and a control panel (44) can be provided in the cleaning tank (1).

7. A clean and efficient cleaning structure for spandex production according to claim 1, characterized in that: The bottom of the cleaning tank (1) is provided with a base (21) for supporting the cleaning tank (1).

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