Automatic cleaning and suction device for polyester and nylon composite production line

Abstract

The automatic cleaning and suction device comprises a suction pump (1), a suction column (3), a suction cover (6), a scraper blade (7), an automatic cleaning system (9), a track (10), a travel switch, a motor, a frequency converter and a PLC (Programmable Logic Controller) assembly, the suction pump (1) is connected with the suction column (3) through a first connecting pipe (2), the suction column (3) is connected with the treatment pond (5) through a second connecting pipe (4), and the suction column (3) is provided with a filter screen (8); the suction column (3) is movably connected with the suction cover (6), the suction cover (6) is duckbilled, a funnel-shaped cavity is formed in the suction cover (6), a plurality of rails (10) are arranged in the cavity, and the scraper (7) is hinged to the rails (10); the PLC assembly is connected with the frequency converter, the frequency converter is connected with the motor, the motor is connected with the travel switch, one end of the travel switch is connected with the scraper (7), and the other end of the travel switch is connected with the input end of the PLC assembly; different from traditional suction equipment, the scraper (7) is arranged in the suction inner cavity and matched with the automatic cleaning system (9), automatic reciprocating motion of the scraper (7) is achieved, and monomers on the suction cover (6) are accurately cleaned.

Description

Technical Field

[0001] This utility model relates to the field of monomer suction, and in particular to an automatic cleaning suction device for a polyester-nylon composite production line. Background Technology

[0002] The current polyester-nylon composite production process requires the addition of monomers to facilitate spinning, and excess monomers are removed by water suction equipment.

[0003] Since the water suction equipment is located inside the spinning production equipment, after a long period of production, the casing of the suction equipment may become clogged, which will affect the product quality. If cleaning is required, the equipment must be stopped. Based on experience, the equipment should be stopped for cleaning every 5 days. Otherwise, it will seriously affect the product quality and cause cost waste.

[0004] The main characteristic of existing suction equipment structures is that when there is single-volume pressure, it can cause blockage of the suction hood or suction column, which cannot be cleaned by on-site personnel while the equipment is running. This results in the spinneret overheating during production, affecting product quality. Stopping the equipment for cleaning would generate a large amount of waste yarn, leading to cost waste. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic cleaning and suction device for a polyester-nylon composite production line, which solves the problem of blockage of individual suction equipment.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An automatic cleaning and suction device for a polyester-nylon composite production line includes a suction component and a cleaning component. The suction component includes a suction pump, a suction column, and a suction hood. The cleaning component includes a scraper, an automatic cleaning system, and a track. The automatic cleaning system includes a limit switch, a motor, a frequency converter, and a PLC assembly.

[0008] The suction pump is connected to the inlet of the suction column through a first connecting pipe, and the outlet of the suction column is connected to the treatment tank through a second connecting pipe. The inner wall of the suction column is provided with a filter screen. The side of the suction column is movably connected to the suction hood. The suction hood is duckbill shaped and contains a funnel-shaped cavity. Several tracks are provided inside the cavity, and the scraper is hinged to the tracks.

[0009] The output terminal of the PLC assembly is connected to the input terminal of the frequency converter, the output terminal of the frequency converter is connected to the input terminal of the motor, the signal output terminal of the motor is connected to the signal input terminal of the limit switch, the first signal output terminal of the limit switch is connected to the signal input terminal of the scraper, and the second signal output terminal of the limit switch is connected to the input terminal of the PLC assembly.

[0010] Preferably, the suction column includes a first suction column and a second suction column, and the first suction column is connected to the second suction column through a connector.

[0011] Preferably, the scraper is made of stainless steel plate.

[0012] Preferably, the scraper corresponds to the area where the monomer is attached and needs to be cleaned.

[0013] Preferably, the scraper is elongated, with parallel sides, one end of the scraper is bent, and the other end of the scraper is inclined at 30 to 60 degrees.

[0014] Preferably, the filter screen includes a first filter screen and a second filter screen, wherein the first filter screen is a HEPA filter screen and the second filter screen is a non-woven fabric filter element.

[0015] Preferably, the pore size of the nonwoven filter element is 10–50 μm.

[0016] Preferably, the suction hood is attached to the spinneret box at a distance of 5 to 10 cm from the spinneret hole.

[0017] Preferably, a blockage sensor is also provided inside the suction hood, and the signal output terminal of the sensor is connected to the signal input terminal of the PLC assembly.

[0018] This utility model has the following advantages and beneficial effects compared to the prior art:

[0019] (1) This utility model achieves automatic cleaning of the suction device through the cooperation of the scraper and the automatic cleaning system. During equipment operation, no manual cleaning by on-site personnel is required. The PLC assembly, frequency converter, motor and limit switch work together to form a closed-loop control for back-and-forth operation. When the motor drives the scraper to the limit switch position, the limit switch sends a signal back to the PLC assembly to control the movement of the scraper, enabling the scraper to automatically clean the suction hood. The cleaned-off monomers are directly sucked away by the negative pressure generated by the suction pump, realizing online cleaning. This avoids stopping the equipment due to cleaning the suction equipment, solves the problem of the suction equipment cover being easily blocked by monomers, effectively ensures continuous production of the polyester-nylon composite production line, reduces the large amount of waste yarn caused by equipment shutdown for cleaning, and lowers production costs.

[0020] (2) The suction column adopts a detachable modular design, meaning the first suction column is connected to the second suction column via a connector. This design facilitates the quick and effective removal of oligomers or monomers from the suction column. Simultaneously, the suction column is equipped with filters, including HEPA filters and non-woven fabric filter elements, which effectively filter monomers and prevent them from adhering to the column body and causing blockage. This design not only effectively prevents the suction column from becoming clogged but also provides fast cleaning, simple operation, and minimal impact on normal production, thereby extending the service life of the suction column.

[0021] (3) The device disclosed in this utility model has an automatic cleaning function, which reduces the frequency and workload of manual cleaning and lowers labor costs. On the other hand, it avoids equipment damage caused by frequent equipment blockage and cleaning, reduces equipment maintenance costs and equipment downtime, improves production efficiency, and reduces equipment maintenance costs overall. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an automatic cleaning and suction device for a polyester-nylon composite production line according to this utility model;

[0023] Figure 2 This is a cross-sectional view of the suction column of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the suction cover of this utility model;

[0025] Figure 4 This is a schematic diagram of the scraper structure of this utility model;

[0026] The markings of the components in the attached diagram:

[0027] 1-Suction pump, 2-First connecting pipe, 3-Suction column, 4-Second connecting pipe, 5-Treatment tank, 6-Suction hood, 7-Scraper, 8-Filter screen, 9-Automatic cleaning system, 10-Railway, 11-Clog sensor. Detailed Implementation

[0028] The invention objective of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the implementation of this utility model is not limited to the following embodiments.

[0029] Example 1

[0030] An automatic cleaning and suction device for a polyester-nylon composite production line includes a suction component and a cleaning component. The suction component includes a suction pump 1, two suction columns 3 and a suction hood 6. The cleaning component includes three scrapers 7, an automatic cleaning system 9 and three tracks 10. The automatic cleaning system 9 includes a limit switch, a motor, a frequency converter and a PLC assembly.

[0031] The suction pump 1 is connected to the inlet of the suction column 3 through the first connecting pipe 2, and the outlet of the suction column 3 is connected to the treatment tank 5 through the second connecting pipe 4. The side of the suction column 3 is movably connected to the suction hood 6, and the suction hood 6 forms a negative pressure to suck up the monomer under the action of the suction pump 1.

[0032] The suction column 3 includes a first suction column 3 and a second suction column 3, with the first suction column 3 connected to the second suction column 3 via a connector. Both suction columns 3 have filter screens 8 tightly fitted to their inner walls. The filter screens 8 include a first filter screen 8 and a second filter screen 8. The first filter screen 8 is a HEPA filter, and the second filter screen 8 is a non-woven fabric filter element with a pore size of 10–50 μm. The filter screens 8 are designed to prevent monomers from clogging the suction columns 3.

[0033] The suction hood 6 is duckbill-shaped and contains a funnel-shaped cavity. A track 10 is installed inside the cavity according to the working conditions. The scraper 7 is hinged to the track 10. A blockage sensor 11 is also installed inside the suction hood 6. The signal output terminal of the sensor is connected to the signal input terminal of the PLC assembly. The suction hood 6 is positioned close to the spinneret box at a distance of 5-10 cm from the spinneret orifice. When the blockage sensor 11 detects blockage by a single component inside the suction hood 6, it activates the scraper 7 to clean it.

[0034] The scraper 7 is made of stainless steel plate. The scraper 7 is long and strip-shaped. The sides of the scraper 7 are parallel. One end of the scraper 7 is bent. The other end of the scraper 7 is inclined at 30-60°. The scraper 7 corresponds to the area where the individual particles are attached that need to be cleaned.

[0035] The output terminal of the PLC assembly is connected to the input terminal of the frequency converter, and outputs a control program to the frequency converter; the output terminal of the frequency converter is connected to the input terminal of the motor, and controls the motor to run according to the received program; the signal output terminal of the motor is connected to the signal input terminal of the limit switch, the first signal output terminal of the limit switch is connected to the signal input terminal of the scraper 7, and the second signal output terminal of the limit switch is connected to the input terminal of the PLC assembly; when the motor drives the scraper to the limit switch position, the limit switch returns a signal to the PLC assembly, forming a closed-loop control for back-and-forth operation;

[0036] Instructions for use: Turn on the suction pump 1 to create negative pressure in the suction hood 6, which will draw out the monomers. After passing through the suction hood 6, the monomers will be collected in the filter screen 8. The water flow will be collected in the treatment tank 5 through the suction column 3. When cleaning is not required, the scraper 7 will be placed parallel to the bottom surface of the suction hood 6.

[0037] When a blockage occurs inside the suction hood 6, the blockage sensor 11 sends a signal to the PLC assembly. The PLC assembly outputs a control program to the frequency converter. The frequency converter controls the motor to run according to the received program. The scraper 7 is perpendicular to the bottom surface of the suction hood 6. The motor drives the scraper to move along the track 10. During the movement of the scraper, the cleaned-up individual items are directly sucked away by the negative pressure generated by the suction pump 1, realizing online cleaning without stopping the equipment.

Claims

1. An automatic cleaning and suction device for a polyester-nylon composite production line, characterized in that, It includes a suction assembly and a cleaning assembly. The suction assembly includes a suction pump (1), a suction column (3) and a suction hood (6). The cleaning assembly includes a scraper (7), an automatic cleaning system (9) and a track (10). The automatic cleaning system (9) includes a limit switch, a motor, a frequency converter and a PLC assembly. The suction pump (1) is connected to the inlet of the suction column (3) through the first connecting pipe (2), and the outlet of the suction column (3) is connected to the treatment tank (5) through the second connecting pipe (4). The inner wall of the suction column (3) is provided with a filter screen (8). The side of the suction column (3) is movably connected to the suction hood (6). The suction hood (6) is duckbill shaped and contains a funnel-shaped cavity. Several tracks (10) are provided inside the cavity, and the scraper (7) is hinged to the track (10). The output terminal of the PLC assembly is connected to the input terminal of the frequency converter, the output terminal of the frequency converter is connected to the input terminal of the motor, the signal output terminal of the motor is connected to the signal input terminal of the limit switch, the first signal output terminal of the limit switch is connected to the signal input terminal of the scraper (7), and the second signal output terminal of the limit switch is connected to the input terminal of the PLC assembly.

2. The automatic cleaning and suction device for a polyester-nylon composite production line according to claim 1, characterized in that, The suction column (3) includes a first suction column (3) and a second suction column (3), and the first suction column (3) is connected to the second suction column (3) through a connector.

3. The automatic cleaning and suction device for a polyester-nylon composite production line according to claim 1, characterized in that, The scraper (7) is made of stainless steel plate.

4. The automatic cleaning and suction device for a polyester-nylon composite production line according to claim 1, characterized in that, The scraper (7) corresponds to the area where the monomers are attached that need to be cleaned.

5. The automatic cleaning and suction device for a polyester-nylon composite production line according to claim 1, characterized in that, The scraper (7) is long and narrow, with parallel sides. One end of the scraper (7) is bent, and the other end of the scraper (7) is inclined at 30 to 60 degrees.

6. The automatic cleaning and suction device for a polyester-nylon composite production line according to claim 1, characterized in that, The filter screen (8) includes a first filter screen (8) and a second filter screen (8), wherein the first filter screen (8) is a HEPA filter screen and the second filter screen (8) is a non-woven fabric filter element.

7. The automatic cleaning and suction device for a polyester-nylon composite production line according to claim 2, characterized in that, The pore size of the nonwoven filter element is 10–50 μm.

8. The automatic cleaning and suction device for a polyester-nylon composite production line according to claim 1, characterized in that, The suction hood (6) is attached to the spinneret box at a distance of 5 to 10 cm from the spinneret hole.

9. The automatic cleaning and suction device for a polyester-nylon composite production line according to claim 1, characterized in that, The suction hood (6) is also equipped with a blockage sensor (11), and the signal output terminal of the sensor is connected to the signal input terminal of the PLC assembly.

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