CN105817088B - Low noise gas-filtering device is used in one kind weaving - Google Patents

Abstract

The invention discloses a kind of weaving low noise gas-filtering device, the filter includes exhaust passage, cleaning device, metal cap, the first fan, baffle plate, the first filter layer, noise detection device and silencing apparatus；One end of exhaust passage is inlet end, and the other end is exhaust end；Metal cap, the first fan, baffle plate and the first filter layer are axially sequentially connected in an exhaust gas along exhaust passage, and metal cap is close to inlet end；Cleaning device is connected in an exhaust gas, and cleaning device is located at the side of metal cap；The exhaust end of exhaust passage is located at the top of exhaust passage, and exhaust end is in inverted L-type；Noise detection device and silencing apparatus connection are in an exhaust gas.The filter has self-cleaning function, reduces production cost, while reducing the noise produced after air filtration.

Description

A low-noise gas filter device for textile

technical field

The invention relates to an air filter device, in particular to a low-noise gas filter device for weaving.

Background technique

The dust removal in the textile industry is the process of separating the soil and foreign fibers mixed in the cotton from the cotton and filtering and purifying them. If the airborne dust and flying flowers in the textile factory workshop are attached to the surface of cotton yarn, soot yarn will be formed, which will seriously affect the product quality. After the dusty gas is purified, it can be directly discharged into the atmosphere, or the purified gas can be discharged into the workshop for reuse. Compared with other industries, the textile industry is far different in terms of air volume, concentration of dusty gas (150-400mg/m ³ for textile industry, 8500-35000mg/m ³ for other industrial dust removal), and dust properties. The textile industry currently lacks relevant industry standards and national standards to regulate the filtration accuracy of filter materials, that is, the dust removal efficiency. In terms of dust removal efficiency, the air environment in the workshop is basically judged by visual inspection. If there is no obvious floating dust, the air quality in the workshop is up to standard.

In recent years, the country has continuously improved the industrial exhaust gas emission standards and indoor air quality standards, and special yarns also have special requirements for workshop air quality. Moreover, with the improvement of people's quality of life and health awareness, front-line production workers have higher and higher requirements for the working environment of the workshop. Textile environmental protection equipment manufacturers have also developed many products to improve the filtration effect, but mainly in the production process that requires high filtration effect of the filter material, such as cleaning, carding and air spinning, etc. choose thick and dense filter cloth; For environments with lower requirements for material filtering effect, such as the return air system, choose a relatively sparse filter cloth. The research and development of the filter material is only limited to the discussion of sparseness and compactness. The self-generation performance and adaptability of the filter material are lack of attention.

Contents of the invention

Technical problem: The technical problem to be solved by the present invention is: to provide a low-noise gas filter device for textiles, which has a self-cleaning function, reduces production costs, and reduces noise generated after air filtration.

Technical solution: In order to solve the above-mentioned technical problems, the embodiment of the present invention adopts the following technical solutions:

A low-noise gas filter device for textile, the filter device includes an exhaust passage, a cleaning device, a metal cover, a first fan, a baffle plate, a first filter layer, a noise detection device and a noise reduction device; one end of the exhaust passage is The air intake end and the other end is the exhaust end; the metal cover, the first fan, the baffle and the first filter layer are connected in the exhaust channel in sequence along the axial direction of the exhaust channel, and the metal cover is close to the air intake end; the cleaning device is connected In the exhaust passage, and the cleaning device is located on the side of the metal cover; the exhaust end of the exhaust passage is located on the top of the exhaust passage, and the exhaust end is in an inverted L shape; the noise detection device and the muffler are connected to the exhaust channel.

As a preferred example, the cleaning device includes a diversion tank and a cleaning unit, the cleaning unit includes a drying sub-unit, a water spraying sub-unit and a dust brushing sub-unit, a drying sub-unit, a water spraying sub-unit and a dust brushing sub-unit The subunits are sequentially connected in the exhaust passage along the axial direction of the exhaust passage, and the dust brushing subunit is closest to the metal cover; the diversion groove is located at the bottom of the exhaust passage and below the cleaning unit.

As a preferred example, the cleaning device further includes a second fan, the diameter of the blades of the second fan is smaller than the diameter of the blades of the first fan, the second fan is located between the first fan and the metal cover, and the wind direction after the second fan is started The wind direction is opposite to that after the first fan is started, and the wind speed after the second fan is started is greater than the wind speed after the first fan is started.

As a preferred example, the water spray sub-unit includes a foldable water pipe with a water spray port, and the water spray port is opposite to the metal cover; the drying sub-unit includes a foldable air pipe with an air spray port , the air jet is opposite to the metal cover, and high-temperature gas is passed through the air pipe; the dust brushing unit includes a retractable mechanical arm and a brush, one end of the mechanical arm is fixedly connected in the exhaust channel, and the brush is fixedly connected to the mechanical The other end of the arm; the metal shield is located within the working range of the robotic arm.

As a preferred example, the diversion groove is provided with a water outlet, and a water tank, a water pump and a valve are arranged on the outside of the exhaust passage, the water outlet of the diversion groove is connected with the water inlet of the water pump, and the water outlet of the water pump is connected with the inlet of the water tank. The water outlet is connected, and the water outlet of the water tank is connected with the water inlet of the water pipe through a valve.

As a preferred example, there are two sets of cleaning units, and the two sets of cleaning units are respectively arranged on both sides of the metal cover.

As a preferred example, the low-noise gas filter device for textile further includes an induction device connected in the exhaust passage, and the induction device is located on the side of the baffle facing the metal cover.

As a preferred example, the first filter layer includes a metal mesh skeleton, a first nonwoven material layer, a second nonwoven material layer and a first nanofiltration membrane, the metal mesh skeleton is fixedly connected in the exhaust channel, and the first nonwoven The woven material layer is fixedly connected to one side of the metal mesh skeleton, the second nonwoven material layer is fixedly connected to the other side of the metal mesh skeleton; the first nonwoven material layer is close to the baffle; the first nanometer filter membrane is connected in the exhaust channel.

As a preferred example, the first nanofiltration membrane is connected in the exhaust passage through the upper roller and the lower roller, and the upper roller and the lower roller are respectively connected outside the exhaust passage and arranged up and down; the first nanofiltration membrane is wound on In the upper roller and the lower roller; the rolling of the upper roller or the lower roller can drive the first nanofiltration membrane to move.

As a preferred example, the low-noise gas filter device for textiles also includes a dust detection device and a second nanofiltration membrane; one side of the first filter layer is an air channel, and the air channel is connected to the exhaust end of the exhaust channel. connection; the dust detection device is located on the outside of the air passage, and the probe of the dust detection device is located in the air passage; the second nanofiltration membrane is wound in the top drum; the top drum is fixedly connected to the outside of the exhaust end, and the rotation of the top drum can drive The second nanofiltration membrane moves to close or open the exhaust port.

Beneficial effects: Compared with the prior art, the embodiments of the present invention have the following beneficial effects: the filtering device has a self-cleaning function, and reduces filtering costs. At present, filter materials and filter devices used in textile mills, and even filter materials and filter devices used in other industries, generally do not have self-cleaning devices. In this embodiment, a cleaning device is provided to clean the metal cover, so that the metal cover does not need to be replaced as a whole, the filtering cost is reduced, and the working efficiency is also improved. When the entire metal cover needs to be cleaned, the baffle is used to isolate the first filter layer from the cleaning area, so as to avoid the impact of the sprayed water on the first filter layer during cleaning. The embodiment of the present invention adds a cleaning device, which is equivalent to reducing the working load of the filter material and prolonging the service life of the filter material. At the same time, the service life of the filter device is also prolonged, and the cleanliness of the filter device is maintained. In the embodiment of the present invention, a noise detection device is provided to detect the air noise about to be discharged from the exhaust passage. According to the detection result, activate the muffler device. Noise pollution is reduced by means of mufflers. High dust removal efficiency, long service life, low energy consumption, intelligent integration of filter materials and filter equipment, self-cleaning, and high self-adaptive capabilities. The dust concentration of the air discharged by the device can reach below 1㎎/m ³ , which is suitable for the continuous improvement of the use capacity of textile enterprises.

Description of drawings

Fig. 1 is a structural sectional view of an embodiment of the present invention.

In the figure there are: exhaust channel 1, cleaning device 2, metal cover 3, first fan 4, baffle 5, first filter layer 6, sensing device 7, dust detection device 8, second nanofiltration membrane 9, noise detection Device 10, noise reduction device 11, water tank 12, water pump 13, valve 14, air passage 15, sound-absorbing tile 16, exhaust end 101, diversion groove 201, drying subunit 202, water spraying subunit 203, dust brush Unit 204 , second fan 205 , metal mesh skeleton 601 , first nonwoven material layer 602 , second nonwoven material layer 603 , first nanofiltration membrane 604 , upper drum 605 , lower drum 606 , top drum 901 .

detailed description

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a kind of low-noise gas filter device for textile use in the embodiment of the present invention includes an exhaust passage 1, a cleaning device 2, a metal cover 3, a first fan 4, a baffle plate 5, a first filter layer 6, Noise detection device 10 and noise reduction device 11. One end of the exhaust channel 1 is an intake end, and the other end is an exhaust end 101 . The metal cover 3 , the first fan 4 , the baffle plate 5 and the first filter layer 6 are sequentially connected in the exhaust channel 1 along the axial direction of the exhaust channel 1 , and the metal cover 3 is close to the intake end. The cleaning device 2 is connected in the exhaust passage 1 , and the cleaning device 2 is located on the side of the metal cover 3 . The exhaust end of the exhaust passage 1 is located at the top of the exhaust passage 1, and the exhaust end is in an inverted L shape. The noise detection device 10 and the noise reduction device 11 are connected in the exhaust passage 1 .

The working process of the air filter device of the above-mentioned embodiment is: start the first fan 4, the negative pressure generated after the first fan 4 rotates makes the dusty air in the room enter the exhaust channel 1, and the dusty air first passes through the metal cover 3 , the dust particles and fibers contained in the air are blocked by the metal cover 3 and attached to the metal cover 3 . After the large particles of dust or fibers are filtered by the metal cover 3, the air continues to flow in the exhaust passage 1. Small particles of dust contained in the air are filtered through the first filter layer 6, so that the air flowing out from the exhaust passage 1 is clean. At the same time, a cleaning device 2 is also provided in the air filter device. The cleaning device 2 can clean the metal cover 3 to remove impurities such as dust particles or fibers wound on the metal cover 3 , so that the metal cover 3 can be used repeatedly. In the prior art, when the metal cover 3 is entangled by impurities such as dust particles or fibers, which affects the air flow, it is necessary to replace the metal cover 3 as a whole or stop the machine to manually clean the metal cover 3 . Compared with the prior art, this embodiment cleans the metal cover 3 by setting the cleaning device 2, so that there is no need to replace the metal cover 3 as a whole or shut down the metal cover to clean the metal cover, which reduces production costs and improves work efficiency. When the entire metal cover 3 needs to be cleaned, the baffle plate 5 is used to isolate the first filter layer 6 from the cleaning area, so as to prevent the first filter layer 6 from being affected by the sprayed water during cleaning.

As a preferred example, the noise detection device 10 is located on one side of the noise reduction device 11 , and the other side of the noise reduction device 11 is the exhaust end of the exhaust passage 1 . A sound-absorbing tile 16 is arranged on the inner wall of the exhaust end of the exhaust channel 1 . The sound-absorbing tile 16 is used for assisting the sound-absorbing device to eliminate noise.

Air noise that is about to be discharged from the exhaust passage 1 is detected by providing a noise detection device 10 . The noise wavelength of the exhaust gas is judged by the noise detection device 10 . According to the detection result, the muffler device 11 is activated. The noise reduction device 11 can provide wavelengths opposite to those of the filtered gas to be discharged, thereby achieving opposite wavelengths, canceling each other, and reducing noise pollution. Certainly, the inner wall surface of the exhaust channel 1 is provided with anechoic tiles 16, and the anechoic tiles 16 are used to silence the airflow, and the structure is simpler. There is no noise detection and noise elimination device in the prior art. This leads to the fact that although the exhaust air meets certain standards, it produces noise pollution.

Meanwhile, the above embodiment detects the air noise about to be discharged from the exhaust passage 1 by providing the noise detection device 10 . The noise wavelength of the exhaust gas is judged by the noise detection device 10 . According to the detection result, the muffler device 11 is activated. The noise reduction device 11 can provide wavelengths opposite to those of the filtered gas to be discharged, thereby achieving opposite wavelengths, canceling each other, and reducing noise pollution. Certainly, the inner wall surface of the exhaust channel 1 is provided with anechoic tiles, and the anechoic tiles are used to silence the airflow, so the structure is simpler. There is no noise detection and noise elimination device in the prior art. This leads to the fact that although the exhaust air meets certain standards, it produces noise pollution.

In the above embodiment, the cleaning device 2 includes a diversion tank 201 and a cleaning unit, and the cleaning unit includes a drying sub-unit 202 , a water spraying sub-unit 203 and a dusting sub-unit 204 . The drying sub-unit 202 , the water spraying sub-unit 203 and the dust brushing sub-unit 204 are sequentially connected in the exhaust channel 1 along the axial direction of the exhaust channel 1 , and the dust brushing sub-unit 204 is closest to the metal cover 3 . The guide groove 201 is located at the bottom of the exhaust passage 1 and below the cleaning unit.

The water spraying sub-unit 203 is used for spraying water on the metal cover 3 to avoid secondary dust generation when the metal cover 3 is cleaned. At the same time, when the water spraying sub-unit 203 sprays the metal cover 3, the form of water flows down along the metal cover 3, and some impurities such as dust or fibers wound on the metal cover 3 are brought into the diversion groove 201 at the lower part. middle. As a preferred example, the water spray sub-unit 203 includes a foldable water pipe provided with a water spray port, and the water spray port is opposite to the metal cover 3 . When the water spray sub-unit 203 is not needed, it can be folded into the groove of the inner wall of the exhaust channel. When the water spray sub-unit 203 needs to be used, it can protrude from the inner wall groove of the exhaust channel 1 .

The dust brushing sub-unit 204 is used to clean the metal cover 3, so that impurities such as dust or fibers on the metal cover 3 are separated from the metal cover 3, and at the same time, the water spray sub-unit 203 is used to spray the metal cover 3, so that the dust particles or Impurities such as fibers flow into the diversion groove 201 with the water flow. As a preferred example, the dust brushing unit 204 includes a retractable mechanical arm and a brush, one end of the mechanical arm is fixedly connected in the exhaust passage 1, and the brush is fixedly connected to the other end of the mechanical arm; the metal cover 3 is located on the mechanical arm. within the working range of the arm. After the metal cover 3 is cleaned, the wet metal cover 3 is dried by the drying subunit 202 . As a preferred example, the drying sub-unit 202 includes a collapsible air pipe provided with an air jet opening opposite to the metal cover 3 , and high-temperature gas passes through the air pipe. The metal cover 3 is dried by high-temperature air. In order to enhance the cleaning effect, there are two sets of cleaning units, and the two sets of cleaning units are arranged on both sides of the metal cover 3 respectively. Two sets of cleaning units work at the same time, which is beneficial to improve cleaning efficiency and cleaning effect.

In the above embodiment, after the water spraying sub-unit 203 sprays the metal cover 3 , the generated waste water flows into the diversion tank 201 . If the spraying water used by the water spraying sub-unit 203 is the waste water, it is beneficial to reuse the waste water. As a preferred example, the diversion groove 201 is provided with a water outlet, and a water tank 12, a water pump 13 and a valve 14 are arranged on the outside of the exhaust passage 1, and the water outlet of the diversion groove 201 is connected with the water inlet of the water pump 13, and the water pump The water outlet of 13 is connected with the water inlet of water tank 12, and the water outlet of water tank 12 is connected with the water inlet of water pipe by valve 14. By setting the water tank 12, the water pump 13 and the valve 14, the waste water flowing into the diversion tank 201 is recycled. Due to the large water consumption of spraying, the recycling of waste water greatly reduces the production cost. At present, the biggest problem of textile mills is high energy consumption, including water and electricity consumption, which is a big energy consumer. In this embodiment, a diversion tank is provided to collect waste water and recycle it, which saves water resources, protects the environment, and reduces production costs.

When the metal cover 3 is completely blocked by impurities such as dust particles or fibers in the air, it is necessary to stop the operation of the first fan 4 to clean the metal cover 3 . That is to say, when cleaning the entire metal cover 3 , it is necessary to stop the work of filtering air, which is not conducive to the continuity of the work of filtering air. In this preferred example, when the metal cover 3 is partially blocked and affects filtration, the metal cover 3 is partially cleaned. During local cleaning, the dusty gas is still flowing, and the filtering work is always going on, which is beneficial to improve the filtering efficiency and reduce the production cost. Therefore, described cleaning device 2 also comprises second fan 205, and the blade diameter of second fan 205 is smaller than the blade diameter of first fan 4, and second fan 205 is positioned between first fan 4 and metal cover 3, and second The wind direction after the fan 205 is started is opposite to the wind direction after the first fan 4 is started, and the wind speed after the second fan 205 is started is greater than the wind speed after the first fan 4 is started. A casing is provided on the second fan 205 , and the casing faces the first fan 4 . When the metal cover 3 needs to be cleaned locally, the second fan 205 is moved to the position to be cleaned, and then the second fan 205 is started to blow air on the metal cover 3 . Since the second fan 205 is provided with a casing, the negative pressure generated by the operation of the first fan 4 has no influence on the part of the metal cover 3 corresponding to the second fan 205 . Simultaneously, the wind speed after the second fan 205 is started is greater than the wind speed after the first fan 4 is started, and utilizes the wind to blow the dust on the part of the metal mesh to separate it from the metal mesh. For the dust still adhering to the metal cover 3, clean it with a cleaning device. This cleaning is still performed locally. In this way, by setting the second fan 205, the metal cover 3 can be partially cleaned without stopping the operation of the first fan 4, and the filtering work is continuous.

As a preferred example, the low-noise gas filter device for textile further includes an induction device 7 connected in the exhaust passage 1 and located on the side of the baffle plate 5 facing the metal cover 3 . The sensing device 7 is used to sense whether the metal cover 3 needs partial or overall cleaning. Preferably, the sensing device 7 is a photoelectric sensor or a pressure sensor. Whether to activate the cleaning device is determined by the detection result of the photoelectric sensor or the pressure sensor to clean the metal cover 3 .

As a preferred example, the first filter layer 6 includes a metal mesh skeleton 601, a first nonwoven material layer 602, a second nonwoven material layer 603 and a first nanofiltration membrane 604, and the metal mesh skeleton 601 is fixedly connected to the exhaust In channel 1, the first nonwoven material layer 602 is fixedly connected to one side of the metal mesh skeleton 601, and the second nonwoven material layer 603 is fixedly connected to the other side of the metal mesh skeleton 601; the first nonwoven material layer 602 is close to the baffle plate 5 ; The first nanofiltration membrane 604 is connected in the exhaust channel 1 . The air filtered by the metal cover 3 may still contain dust or other impurities with a smaller particle size. At this time, the first filter layer 6 is provided to further filter impurities such as dust particles or fibers in the air. Preferably, the diameter of pores in the first nonwoven material layer 602 is larger than the diameter of pores in the second nonwoven material layer 603 . The pore diameter of the first nanofiltration membrane 604 is smaller than that of the second nonwoven material layer 603 . Thus, in the first filter layer 6 , the air is first filtered through the first nonwoven material layer 602 , then through the second nonwoven material layer 603 , and finally through the first nanofiltration membrane 604 . After three layers of filtration, most of the dust in the air is filtered, basically meeting the air emission standards. The first nanofiltration membrane 604 is manufactured by electrospinning.

Since the pores in the first nanofiltration membrane 604 are small, they are easily blocked. When the pores in the first nanofiltration membrane 604 are blocked or damaged, the filtering work cannot be carried out smoothly. In this case, in the prior art, the first nonwoven material, the second nonwoven material and the first nanofiltration membrane are generally replaced as a whole. In fact, the first nonwoven material and the second nonwoven material can still be used, only because the first nanofiltration membrane loses its filtering function after long-term use, and only the first nanofiltration membrane 604 needs to be replaced. In addition, when replacing the first non-woven material layer, the second non-woven material layer and the first nanofiltration membrane, the filtration work needs to be stopped, which is not conducive to the continuity of the filtration work. In this preferred example, the first nanofiltration membrane 604 is connected in the exhaust passage 1 through the upper roller 605 and the lower roller 606, and the upper roller 605 and the lower roller 606 are respectively connected outside the exhaust passage 1 and arranged up and down; A nanofiltration membrane 604 is wound on the upper roller 605 and the lower roller 606; the rolling of the upper roller 605 or the lower roller 606 can drive the first nanofiltration membrane 604 to move. In this way, only the first nanofiltration membrane 604 needs to be replaced, and the first non-woven material layer 602 and the second non-woven material layer 603 do not need to be replaced. At the same time, when the first nanofiltration membrane 604 is replaced, the automatic replacement of the first nanofiltration membrane 604 can be realized by controlling the rolling of the upper roller 605 or the lower roller 606 . During the process of replacing the first nanofiltration membrane 604, the first fan 4 continues to work without stopping the equipment, and the filtering work is still in progress and has continuity.

As a preferred example, the low-noise gas filter device for weaving also includes a dust detection device 8 and a second nanofiltration membrane 9; one side of the first filter layer 6 is an air passage, and the air passage is connected to the exhaust passage 1 The exhaust end of the dust detection device 8 is located on the outside of the air passage 15, and the probe of the dust detection device 8 is located in the air passage; the second nanofiltration membrane 9 is wound in the top drum 901; the top drum 901 is fixedly connected to the row Outside the air end 101 , the rotation of the top roller 901 can drive the second nanofiltration membrane 9 to move, so as to close or open the air end 101 .

When the dust detection device 8 detects that the air still contains dust and does not meet the discharge standard, the second nanofiltration membrane 9 is activated. The air is further filtered by the second nanofiltration membrane 9 . The second nanofiltration membrane 9 is connected in the exhaust passage 1 through the top roller 901 . The rotation of the top roller 901 can drive the second nanofiltration membrane 9 to move. During the movement of the second nanofiltration membrane 9 , other equipment does not need to be stopped, so that the filtration work is continuous. In addition, when the dust detection device 8 detects that the air still contains dust and the air is not up to standard, the first nanofiltration membrane 604 can be replaced. The dust monitoring device 8 is arranged outside the exhaust passage 1 for easy maintenance.

In the prior art, after the air passes through the filter material, whether the discharged air meets the standard is generally not detected in real time. Usually based on experience, filter material is replaced at a fixed time, or intermittent detection, lack of dynamic monitoring of filtered air quality, real-time monitoring. Moreover, even if the air is not up to standard, it is only to replace the filter material, and then it needs to be shut down to replace the material. In the embodiment of the present invention, by arranging the dust detection device 8, it can be ensured that the quality of the filtered air meets the discharge standard. Even if the filter does not meet the standard, the second nanofiltration membrane can be used to carry out the secondary filtration work, and the filter material can be replaced. Maintain the continuity of filtration work, no need to stop for replacement.

The embodiment of the present invention uses the automatic replacement device of the first nano-filtration membrane to avoid the replacement of the filter material after the shutdown of the traditional air filter device used in textile mills, thereby improving the filtration efficiency. The embodiment of the present invention eliminates the noise generated when the air is discharged through the noise detection device and the noise reduction device, and at the same time, the noise when the air is discharged is further reduced by arranging the sound-absorbing tile at the exhaust end. In the embodiment of the present invention, the secondary detection of the filtered gas is carried out through the dust detection device, and a second nano-filtration membrane filter material is provided to further improve the filtration efficiency and reduce the occurrence of non-standard exhaust air caused by damage to the filter material.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned specific examples. The descriptions in the above-mentioned specific examples and the description are only to further illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention The invention also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the claims and their equivalents.

Claims (9)

1. low noise gas-filtering device is used in one kind weaving, it is characterised in that the filter includes exhaust passage (1), cleaning Device (2), metal cap (3), the first fan (4), baffle plate (5), the first filter layer (6), noise detection device (10) and dress of eliminating the noise Put (11)；One end of exhaust passage (1) is inlet end, and the other end is exhaust end；Metal cap (3), the first fan (4), baffle plate (5) Axially it is connected in turn with the first filter layer (6) along exhaust passage (1) in exhaust passage (1), and metal cap (3) is close to air inlet End；Cleaning device (2) is connected in exhaust passage (1), and cleaning device (2) is located at the side of metal cap (3)；Exhaust passage (1) exhaust end is located at the top of exhaust passage (1), and exhaust end is in inverted L-type；Noise detection device (10) and dress of eliminating the noise (11) are put to be connected in exhaust passage (1)；

Described the first filter layer (6) includes metal mesh skeleton (601), the first non-woven material layer (602), the second non-woven material The bed of material (603) and the first nano-filtration membrane (604), metal mesh skeleton (601) are fixedly connected in exhaust passage (1), and first is non- Woven layer (602) is fixedly connected on metal mesh skeleton (601) side, and the second non-woven material layer (603) is fixedly connected on Metal mesh skeleton (601) opposite side；First non-woven material layer (602) is close to baffle plate (5)；First nano-filtration membrane (604) is even It is connected in exhaust passage (1).

2. according to the low noise gas-filtering device of the weaving described in claim 1, it is characterised in that described cleaning device (2) guiding gutter (201) and cleaning unit are included, described cleaning unit includes drying subelement (202), water spray subelement (203) and brush dust subelement (204), drying subelement (202), water spray subelement (203) and brush dust subelement (204) are along being vented Passage (1) is axially connected in turn in exhaust passage (1), and brush dust subelement (204) is from metal cap (3) recently；Guiding gutter (201) it is located at the bottom of exhaust passage (1), and positioned at the lower section of cleaning unit.

3. according to the low noise gas-filtering device of the weaving described in claim 2, it is characterised in that described cleaning device (2) the second fan (205) is also included, the blade diameter of the second fan (205) is less than the blade diameter of the first fan (4), second Fan (205) is located between the first fan (4) and metal cap (3), and wind direction and the first fan after the second fan (205) startup (4) wind direction after starting is on the contrary, and the wind speed after the second fan (205) startup is more than the wind speed after the first fan (4) starts.

4. according to the low noise gas-filtering device of the weaving described in claim 2, it is characterised in that described water spray subelement (203) the folding water pipe provided with water jet is included, the water jet is relative with metal cap (3)；Described drying subelement (202) the folding tracheae provided with puff prot is included, the puff prot relatively, is connected with High Temperature Gas with metal cap (3) in tracheae Body；Described brush dust subelement (204) includes extension type mechanical arm and brush, and one end of mechanical arm is fixedly connected on exhaust and led to In road (1), brush is fixedly connected on the other end of mechanical arm；Metal cap (3) is located in the working range of mechanical arm.

5. according to the low noise gas-filtering device of the weaving described in claim 4, it is characterised in that described guiding gutter (201) delivery port is provided with, water tank (12), water pump (13) and valve (14), guiding gutter are provided with the outside of exhaust passage (1) (201) delivery port is connected with the water inlet of water pump (13), and the delivery port of water pump (13) is connected with the water inlet of water tank (12), water The delivery port of case (12) is connected by valve (14) with the water inlet of water pipe.

6. according to the low noise gas-filtering device of the weaving described in claim 2, it is characterised in that described cleaning unit For two sets, two sets of cleaning units are laid in the both sides of metal cap (3) respectively.

7. according to the low noise gas-filtering device of the weaving described in claim 1, it is characterised in that also including induction installation (7), induction installation (7) is connected in exhaust passage (1), and induction installation (7) is located at baffle plate (5) towards the one of metal cap (3) Side.

8. according to the low noise gas-filtering device of the weaving described in claim 7, it is characterised in that first nanometer of described mistake Filter membrane (604) is connected in exhaust passage (1) by upper roller (605) and bottom roll (606), upper roller (605) and bottom roll (606) it is connected on the outside of exhaust passage (1), and lays up and down；First nano-filtration membrane (604) is wound on upper roller (605) and in bottom roll (606)；The rolling of upper roller (605) or bottom roll (606) can drive the first nano-filtration membrane (604) It is mobile.

9. according to the low noise gas-filtering device of the weaving any one of claim 1 to 8, it is characterised in that also Including dust investigating (8) and the second nano-filtration membrane (9)；The side of first filter layer (6) is air flue (15), and the air flue It is connected with the exhaust end of exhaust passage (1)；Dust investigating (8) is located at the outside of air flue (15), and dust investigating (8) Probe be located at the air flue (15) in；Second nano-filtration membrane (9) is wound in top roller (901)；Push up the fixed company of roller (901) Be connected on the outside of exhaust end (101), the rotation of top roller (901) can drive the second nano-filtration membrane (9) mobile, realize closing or Open wide exhaust end (101).