Dust extraction system in the spinning section

Abstract

This utility model relates to the field of spinning production technology, specifically to a dust extraction system for the spinning section, comprising: a first extraction pipe and a second extraction pipe installed in the spinning section; multiple extraction hoods detachably connected to the first and second extraction pipes and installed within the spinning section; and two negative pressure fans connected to the first and second extraction pipes respectively, wherein the negative pressure fans generate negative pressure at the inlets of the multiple extraction hoods. This application installs one-way valves at the ends of the negative pressure fans in the two dust extraction pipes, fundamentally cutting off the path of pressure crosstalk. The independence of the two extraction pipes is improved; the start and stop of the negative pressure fan in one extraction pipe will not interfere with the normal operation of the remaining extraction pipe, solving the problem of backflow of pollutants from one production line due to the shutdown of another production line, contaminating the spinning position and yarn bundle.

Description

Technical Field

[0001] This utility model relates to the field of spinning production technology, and more specifically to a dust extraction system for the spinning process. Background Technology

[0002] Polymers such as polyester, nylon, and polypropylene are melted and precisely delivered to the spinning box assembly via metering pumps. The melt is extruded from the micro-holes of the spinneret to form filaments. The filaments are cooled and solidified in the spinning window by a side-blowing or ring-blowing system. During this process, in order to impart good bundle properties, antistatic properties, and processability to the fibers, spinning oil is uniformly applied to the filaments through nozzles. The application of the oil and the heat exchange between the high-temperature filaments and the cooling air inevitably generate a large amount of oil fumes in the form of aerosols. Therefore, the spinning section contains air pollutants such as oil fumes, trace monomers, and oligomers.

[0003] Currently, suction hoods are typically installed above the spinning station to capture and remove volatile oil fumes, trace monomers, and oligomers generated during the spinning process, preventing them from spreading into the workshop, avoiding oil stain deposition, ensuring fresh air, and protecting employee health. All suction hoods use negative pressure provided by suction fans to transport the collected pollutants through a pipeline network to end-of-pipe environmental treatment facilities. Only after purification treatment to meet national and local emission standards can they be discharged into the atmosphere.

[0004] The applicant's workshop has two production lines, each equipped with its own independent fan. The exhaust pipes of the fans are connected to the same environmental purification equipment. When one production line (line a) is shut down normally, the pressure generated by the fan of the other production line (line b) not only acts on its own pipe (pipe a), but also is transmitted to the pipe (pipe b) that has been shut down normally. It is possible that residual oil in the pipe will be sprayed out from the suction hood of pipe a, affecting the working environment of production line a. Utility Model Content

[0005] To address the technical problems existing in the dust extraction systems of the spinning section in the prior art, this utility model proposes a dust extraction system for the spinning section, comprising:

[0006] The first suction pipe and the second suction pipe are installed in the spinning section;

[0007] Multiple suction hoods are detachably connected to the first suction pipe and the second suction pipe, and are disposed within the spinning section.

[0008] Two negative pressure fans are connected to the first suction pipe and the second suction pipe respectively. The negative pressure fans generate negative pressure at the inlets of the multiple suction hoods to adsorb pollutants in the spinning section and transport them to the first suction pipe and the second suction pipe.

[0009] The environmental purification equipment has a main pipe connected to its air inlet end, and the air inlet end of the main pipe is connected to the exhaust end of the two negative pressure fans.

[0010] One-way valves are provided at the exhaust ends of the two negative pressure fans. The one-way valves are configured to allow gas to flow only from the negative pressure fans toward the main pipeline.

[0011] Preferably, the one-way valve is an electric one-way valve, which is linked to the negative pressure fan. When the negative pressure fan is de-energized, the electric one-way valve closes, and when the negative pressure fan is energized, the electric one-way valve is allowed to open.

[0012] Preferably, each of the suction hoods is connected to the first suction pipe and the second suction pipe via a threaded connector, plug-in or snap-fit ​​structure.

[0013] Preferably, it also includes a steam source, which is connected to the first suction pipe through a first valve and to the second suction pipe through a second valve. Both the first and second suction pipes are equipped with temperature monitoring devices. When the temperature of the temperature monitoring device exceeds a preset value, the corresponding first or second valve opens, allowing steam to enter the first or second suction pipe for cooling.

[0014] Preferably, the temperature monitoring device is installed on the side of the first suction pipe and the second suction pipe near the negative pressure fan.

[0015] Preferably, the steam source is connected to the first suction pipe and the second suction pipe on the side away from the negative pressure fan.

[0016] Preferably, both the first valve and the second valve include an electric valve and a manual valve connected in parallel.

[0017] Preferably, the electric valve is linked to the temperature monitoring device, and the electric valve opens when the temperature monitoring device exceeds a preset value.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] This application installs one-way valves at the ends of the negative pressure fans in the two smoke extraction pipes, fundamentally cutting off the path of pressure crosstalk. The independence of the two extraction pipes is better, and the start and stop of the negative pressure fan in any one extraction pipe will not affect the normal operation of the remaining extraction pipe. This solves the problem of backflow of pollutants carried by the airflow from one production line to the other line, contaminating the spinning position and yarn bundles, due to the shutdown of one production line. It also avoids the generation of batch waste and defective products, improving production stability and the rate of high-quality products.

[0020] In addition, the steam fire extinguishing and cooling system can monitor the temperature inside the pipeline in real time. Once the temperature exceeds the preset temperature, steam can be injected to reduce the temperature inside the pipeline, preventing spontaneous combustion of flammable materials inside the pipeline, improving the production safety of the workshop, and avoiding potential safety hazards and economic losses. Attached Figure Description

[0021] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of the dust extraction system in the spinning section shown in this utility model;

[0023] Figure 2 This is a schematic diagram showing the first suction pipe in a closed state and the second suction pipe in an open state, as shown in this utility model.

[0024] Figure 3 This is a schematic diagram showing the opening of the electric valve corresponding to the second suction pipe of this utility model to cool the steam.

[0025] Figure 4 This is a schematic diagram showing the opening of the manual valve corresponding to the second suction pipe of this utility model to cool the steam. Detailed Implementation

[0026] To better understand the technical content of this utility model, specific embodiments are provided below in conjunction with the accompanying drawings.

[0027] Combination Figure 1 As shown, this utility model proposes a dust extraction system for a spinning section, including a first extraction pipe 10a and a second extraction pipe 10b, multiple extraction hoods 20, two negative pressure fans 30, and environmental purification equipment 50.

[0028] Both the first suction pipe 10a and the second suction pipe 10b are located in the spinning section. Multiple suction covers 20 are detachably connected to the first suction pipe 10a and the second suction pipe 10b and are located within the spinning section.

[0029] Furthermore, the two negative pressure fans 30 are respectively connected to the first suction pipe 10a and the second suction pipe 10b.

[0030] When the negative pressure fan 30 is turned on, it generates negative pressure at the inlet of multiple suction hoods 20, adsorbing pollutants in the spinning section and transporting them to the first suction pipe 10a and the second suction pipe 10b. The air inlet of the environmental purification equipment 50 is connected to the main pipe 40, and the air inlet of the main pipe 40 is connected to the exhaust end of the two negative pressure fans 30.

[0031] One-way valves 31 are provided at the exhaust ends of the two negative pressure fans 30. The one-way valves 31 are configured to allow gas to flow only from the negative pressure fans 30 to the main pipeline 40.

[0032] Thus, the path of the pollutants is: suction hood 20 - first suction pipe 10a or second suction pipe 10b - negative pressure fan 30 - one-way valve 31 - main pipe 40 - environmental purification equipment 50.

[0033] When the negative pressure fans 30 of the first suction pipe 10a and the second suction pipe 10b are both running normally, there is negative pressure at the inlet of the suction hood 20 connected to the first suction pipe 10a and the second suction pipe 10b, so that pollutants can enter the environmental purification equipment 50 for treatment through the path of suction hood 20-first suction pipe 10a or second suction pipe 10b-negative pressure fan 30-one-way valve 31-main pipe 40-environmental purification equipment 50.

[0034] Combination Figure 2 As shown, when the negative pressure fan 30 of the first suction pipe 10a stops normally, while the negative pressure fan 30 of the second suction pipe 10b remains on, the negative pressure fan 30 of the second suction pipe 10b always maintains a high pressure on the environmental purification equipment 50. Once the negative pressure fan 30 of the first suction pipe 10a stops, the pressure disappears. The one-way valve 31 can prevent the airflow carrying pollutants in the second suction pipe 10b from entering the first suction pipe 10a.

[0035] In a preferred embodiment, the one-way valve 31 is an electric one-way valve, which is linked to the negative pressure fan 30. When the negative pressure fan 30 is de-energized, the electric one-way valve closes; when the negative pressure fan 30 is energized, the electric one-way valve is allowed to open.

[0036] like Figure 2 As shown, when the negative pressure fan 30 of the first suction pipe 10a stops normally, the one-way valve 31 at the output port of the negative pressure fan 30 closes synchronously at the first moment, completely avoiding the possibility of pollutants being mixed into the first suction pipe 10a from the second suction pipe 10b.

[0037] In the above embodiments, each suction hood 20 is connected to the first suction pipe 10a and the second suction pipe 10b via threaded connections, plug-in or snap-fit ​​structures.

[0038] In this way, when any suction hood 20 becomes clogged, it can be replaced in a timely manner to avoid adverse effects on the suction of contaminants.

[0039] It should be understood that since pollutants in the spinning section usually include flammable substances such as oil fumes, trace monomers and oligomers, they may accumulate in the pipes when cooled. In addition, there are heat transfer pipes throughout the workshop in the spinning section. These heat sources will affect the temperature inside the pipes. Once the temperature inside the pipes rises to a certain temperature, flammable substances will be at risk of spontaneous combustion. Therefore, the suction system is also equipped with a steam source 60. The steam source 60 is connected to the first suction pipe 10a through the first valve and to the second suction pipe 10b through the second valve.

[0040] Furthermore, both the first suction pipe 10a and the second suction pipe 10b are equipped with temperature monitoring devices 11.

[0041] Thus, when the temperature of the temperature monitoring device 11 exceeds the preset value, the corresponding first valve or second valve opens, allowing steam to enter the first suction pipe 10a or the second suction pipe 10b for cooling. Steam can be used to cool the pipe and prevent the combustion of combustibles, thereby increasing the reliability and safety of the smoke and dust extraction system.

[0042] In an optional embodiment, since pollutants typically accumulate in greater quantities on the side closer to the negative pressure fan 30, the temperature monitoring device 11 is installed on the side of the first suction pipe 10a and the second suction pipe 10b closer to the negative pressure fan 30.

[0043] Furthermore, in order to completely cool the entire suction pipe, the steam source 60 is connected to the side of the first suction pipe 10a and the second suction pipe 10b away from the negative pressure fan 30.

[0044] Combination Figure 3 and Figure 4 As shown, both the first valve and the second valve include an electric valve 32 and a manual valve 33 connected in parallel.

[0045] The electric valve 32 is linked to the temperature monitoring device 11. When the temperature monitoring device 11 exceeds the preset value, the electric valve 32 opens.

[0046] Combination Figure 3 As shown, taking the temperature at the temperature monitoring point of the second suction pipe 10b exceeding the preset value as an example, the electric valve 32 is opened by electric control, and the steam source 60 releases steam into the second suction pipe 10b. The steam flows through the second suction pipe 10b to cool down the second suction pipe 10b and prevent the combustion of combustibles.

[0047] In other embodiments, if the electric valve 32 fails, the manual valve 33 is used to open the bypass, allowing steam to enter the first suction pipe 10a or the second suction pipe 10b.

[0048] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A spinning stage fume extraction system, characterized in that, include: The first suction pipe (10a) and the second suction pipe (10b) are installed in the spinning section; Multiple suction hoods (20) are detachably connected to the first suction pipe (10a) and the second suction pipe (10b) and are disposed within the spinning section; Two negative pressure fans (30) are connected to the first suction pipe (10a) and the second suction pipe (10b) respectively. The negative pressure fans (30) generate negative pressure at the inlets of the multiple suction hoods (20) to adsorb pollutants in the spinning section and transport them to the first suction pipe (10a) and the second suction pipe (10b). The environmental purification equipment (50) has a main pipe (40) connected to its air inlet end, and the air inlet end of the main pipe (40) is connected to the exhaust end of the two negative pressure fans (30). One-way valves (31) are provided at the exhaust ends of the two negative pressure fans (30), and the one-way valves (31) are configured to allow gas to flow only from the negative pressure fans (30) to the main pipe (40).

2. Spinning station fume extraction system according to claim 1, characterized in that The one-way valve (31) is an electric one-way valve. The electric one-way valve is linked with the negative pressure fan (30). When the negative pressure fan (30) is de-energized, the electric one-way valve is closed. When the negative pressure fan (30) is energized, the electric one-way valve is allowed to open.

3. Spinning station fume extraction system according to claim 1, characterized in that Each of the suction hoods (20) is connected to the first suction pipe (10a) and the second suction pipe (10b) by means of threaded connections, plug-in or snap-fit ​​structures.

4. The dust extraction system for the spinning section according to claim 1, characterized in that, It also includes a steam source (60), which is connected to the first suction pipe (10a) through a first valve and to the second suction pipe (10b) through a second valve. Both the first suction pipe (10a) and the second suction pipe (10b) are equipped with temperature monitoring devices (11). When the temperature of the temperature monitoring device (11) exceeds a preset value, the corresponding first valve or second valve is opened, allowing steam to enter the first suction pipe (10a) or the second suction pipe (10b) for cooling.

5. Spinning station fume extraction system according to claim 4, characterized in that The temperature monitoring device (11) is installed on the side of the first suction pipe (10a) and the second suction pipe (10b) near the negative pressure fan (30).

6. Spinning station fume extraction system according to claim 4, characterized in that The steam source (60) is connected to the side of the first suction pipe (10a) and the second suction pipe (10b) away from the negative pressure fan (30).

7. Spinning station fume extraction system according to claim 4, characterized in that Both the first valve and the second valve include an electric valve (32) and a manual valve (33) connected in parallel.

8. Spinning station soot suction system according to claim 7, characterized in that The electric valve (32) is linked to the temperature monitoring device (11). When the temperature monitoring device (11) exceeds the preset value, the electric valve (32) opens.

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