Continuous circulating type setting machine flue cleaning sewage treatment equipment

Abstract

The application discloses a continuous circulating type shaping machine smoke pipe cleaning sewage treatment equipment, which comprises a water receiving pool, a multistage sedimentation tank, a first recovery pool and a dosing assembly, the multistage sedimentation tank is divided into a primary sedimentation zone, a secondary sedimentation zone and a cross communication zone, the primary sedimentation zone and the secondary sedimentation zone are arranged on two sides of the multistage sedimentation tank, and the bottom ends of the two are provided with an inclination, the inclination angle is 5-8 degrees, and the cross communication zone is located above the primary sedimentation zone and directly communicates with the primary sedimentation zone. Through the hierarchical sedimentation structure design of the multistage sedimentation tank and the targeted regional dosing mode, the medicament is accurately mixed and reacted with the sewage at different treatment stages, the grease, fiber dust, solid impurities and part of the refractory organic matters in the sewage are efficiently separated, the solid-liquid separation effect and the sewage treatment efficiency are remarkably improved, the water quality after treatment can meet the shaping machine smoke pipe cleaning circulation reuse requirements, and the water resource consumption is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a continuous circulation wastewater treatment device for cleaning the flue pipes of a stenter. Background Technology

[0002] The cleaning process of the stenter's flue pipe generates a large amount of highly polluting wastewater. This type of wastewater is characterized by its complex composition, high pollutant concentration, and difficulty in treatment: First, the wastewater contains high concentrations of oils and greases such as floating oil and emulsified oil, as well as fiber dust, forming a viscous system of oil-coated dust and dust-coated oil that is difficult to separate naturally; Second, residual high-molecular adhesives and coking organic matter in the wastewater lead to a significant increase in chemical oxygen demand, and these organic substances have a stable structure that is difficult to effectively degrade using conventional treatment methods; Third, the wastewater also contains inorganic salts such as soda ash and sodium sulfate left over from the stenter process, which can easily cause equipment scaling and water quality deterioration if accumulated over a long period of time.

[0003] Existing wastewater treatment equipment for stenter exhaust pipe cleaning mostly adopts traditional processes such as single sedimentation and simple chemical dosing flocculation, which have many technical defects: On the one hand, the treatment process is fragmented and lacks a targeted graded treatment structure, which cannot adapt to the separation requirements of wastewater with high oil and high suspended solids, resulting in incomplete solid-liquid separation, excessive oil content and suspended solids in the effluent, and difficulty in achieving recycling; on the other hand, the dosing method is crude, the agent and wastewater are not mixed evenly, the flocculation reaction efficiency is low, and the dosing is not precisely targeted to the water quality characteristics of different treatment stages, resulting in agent waste and secondary pollution; in addition, existing equipment generally lacks efficient foam and residual impurity removal mechanisms, and the foam and oil residue in the treated water can easily clog subsequent circulation pipes and spray nozzles, affecting the continuous operation of the equipment, and also failing to meet the requirements of stenter exhaust pipe cleaning for reclaimed water quality. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a continuous circulation type wastewater treatment equipment for cleaning the flue pipes of a stenter.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A continuous circulation wastewater treatment device for cleaning flue pipes of a stenter includes a receiving tank, a multi-stage sedimentation tank, a first recovery tank, and a dosing assembly. The multi-stage sedimentation tank is divided into a primary sedimentation zone, a secondary sedimentation zone, and a cross-connection zone. The primary sedimentation zone and the secondary sedimentation zone are located on opposite sides of the multi-stage sedimentation tank, and both have their bottom ends inclined at an angle of 5-8°. The cross-connection zone is located above and directly connected to the primary sedimentation zone. The upper end of the secondary sedimentation zone is connected to the cross-connection zone via a transverse connecting pipe. A first water pump is installed at the upper end of the water receiving tank, connecting the water receiving tank with the primary sedimentation zone. A second water pump is installed between the multi-stage sedimentation tank and the first recovery tank. One end of the second water pump is connected to the lower end of the primary sedimentation zone and the secondary sedimentation zone through a three-way pipe, and the other end is connected to the upper end of the first recovery tank. The dosing assembly consists of multiple dosing tanks, an inlet pipe, and a liquid pump. The multiple dosing tanks are located on the side of the multi-stage sedimentation tank. The inlet pipe is located on the side of the dosing tank and is connected to each dosing tank. The multiple liquid pumps are installed on the side of the dosing tanks, with one end connected to the dosing tank through an outlet pipe and the other end extending to the top of the multi-stage sedimentation tank through a guide pipe. The outlets are divided into two groups: one group of outlets is located above the primary sedimentation zone, and the other group of outlets is connected to a horizontal connecting pipe. A stirring mechanism is installed inside each dosing tank.

[0006] Preferably, the stirring mechanism includes a stirring motor, a stirring shaft, and stirring paddles. Multiple stirring motors are mounted above multiple dosing tanks via a motor frame. The stirring shaft is coaxially fixedly connected to the output shaft of the stirring motor and extends into the dosing tank. Multiple stirring paddles are evenly distributed on the side wall of the stirring shaft.

[0007] Preferably, an auxiliary treatment box is fixedly installed on the side of the multi-stage sedimentation tank. The auxiliary treatment box is connected to the upper end of the secondary sedimentation zone through an auxiliary connecting pipe. A second recovery tank is provided on the side of the first recovery tank. A third water pump is installed between the second recovery tank and the auxiliary treatment box, connecting the lower end of the auxiliary treatment box and the upper part of the second recovery tank. A separate set of dosing components is provided, with its dosing pipe extending to the upper part of the auxiliary treatment box, and a single outlet is provided at the upper part of the auxiliary treatment box.

[0008] Preferably, a device plate is fixedly connected between the first and second recycling pools, and a foam collection box is fixedly installed on the side wall of both pools. A foam removal component is installed on the device plate for reciprocating oscillation to scrape away residual foam and oil residue on the water surface. The foam removal component includes a pair of oscillating scrapers, a first full gear, and a rotating wheel. The pair of oscillating scrapers are symmetrically arranged above the first and second recycling pools and are fixedly connected to the first full gear and the rotating wheel, respectively. The first full gear and the rotating wheel are rotatably connected to the upper end of the device plate. A drive mechanism for driving the first full gear to reciprocate is installed on the device plate, and a transmission mechanism for causing the first full gear and the rotating wheel to rotate in opposite directions is also installed on the device plate.

[0009] Preferably, the drive mechanism includes a drive motor, a half gear, and a torsion spring. The drive motor is fixedly mounted on the upper end of the device plate. The half gear is coaxially and fixedly connected to the output shaft of the drive motor and intermittently meshes with the first full gear. The torsion spring is elastically connected between the full gear and the device plate.

[0010] Preferably, the transmission mechanism includes a second full gear and a pair of transmission wheels. The second full gear is rotatably connected to the upper end of the device plate and meshes with the first full gear. The pair of transmission wheels are coaxially fixedly connected to the second full gear and the rotating wheel, respectively. The pair of transmission wheels are connected by a transmission belt.

[0011] Preferably, the end of the oscillating scraper away from the first gear and the rotating wheel is provided with a flexible scraper strip, which is fitted in contact with the pool walls and water surface of the first and second recycling pools, and the oscillation trajectory of the oscillating scraper covers the width of the water surface of the first and second recycling pools.

[0012] Preferably, a filter grid is provided at one end of the auxiliary connecting pipe near the secondary sedimentation zone. The filter grid is detachably connected to the inside of the pipe opening of the auxiliary connecting pipe and is used to intercept solid impurities discharged from the upper end of the secondary sedimentation zone.

[0013] Preferably, the outlet ends of the drug delivery pipe extending to the multi-stage sedimentation tank and the horizontal connecting pipe are all equipped with diversion nozzles. The nozzles of the diversion nozzles are oriented towards the water flow direction, and anti-clogging screens are provided at the nozzles.

[0014] The present invention has the following beneficial effects: 1. This invention utilizes a multi-stage sedimentation tank with a graded sedimentation structure design, combined with a targeted regional dosing method, to ensure precise mixing and reaction of the reagents with wastewater at different treatment stages. This efficiently separates grease, fiber dust, solid impurities, and some recalcitrant organic matter from the wastewater, significantly improving the solid-liquid separation effect and wastewater treatment efficiency. The treated water quality can meet the requirements for cleaning and recycling of the stenter's flue pipes, greatly reducing water consumption.

[0015] 2. By adding an auxiliary treatment tank and a second recovery tank, this invention forms a dual protection system of main treatment and auxiliary treatment, which can perform deep treatment on the sewage after secondary sedimentation. At the same time, it is equipped with a reciprocating swing foam removal component to thoroughly scrape off the foam and oil residue remaining on the water surface, avoid clogging of subsequent circulation pipes and spray nozzles, ensure continuous and stable operation of the equipment, and reduce maintenance costs.

[0016] 3. The stirring mechanism in the dosing component of this invention ensures uniform mixing of the agents and avoids agent clumping, which affects the treatment effect. At the same time, the zoned dosing design reduces agent waste. Combined with the integrated equipment structure layout, it forms a closed-loop process from wastewater collection, treatment to recycling and reuse. The structure is compact and the connection is smooth, which is suitable for the continuous operation requirements of the stenter flue cleaning, improving the practicality and environmental benefits of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front and side structure of a continuous circulation type styling machine flue cleaning wastewater treatment equipment proposed in this invention; Figure 2 This is a schematic diagram of the structure of the multi-stage sedimentation tank proposed in this invention; Figure 3 This is a schematic diagram of the back structure of a continuous circulation type stenter flue cleaning wastewater treatment equipment proposed in this invention. Figure 4 This is a schematic diagram of the stirring mechanism proposed in this invention; Figure 5 This is a schematic diagram showing the connection between the dosing tank and the liquid pump proposed in this invention; Figure 6 This is a schematic diagram of the auxiliary processing box and the second recycling pool proposed in this invention; Figure 7 This is a schematic diagram showing the connection between the first recovery tank, the second recovery tank, and the scum removal component proposed in this invention; Figure 8 This is a schematic diagram of the foam removal component proposed in this invention.

[0018] In the diagram: 1. Water receiving tank; 2. First water pump; 3. Multi-stage sedimentation tank; 301. Primary sedimentation zone; 302. Cross-connection zone; 303. Secondary sedimentation zone; 304. Horizontal connecting pipe; 4. Second water pump; 5. First recovery tank; 6. T-junction pipe; 7. Motor frame; 8. Dosing tank; 801. Agitator shaft; 802. Agitator paddle; 803. Discharge pipe; 9. Agitator motor; 10. Liquid pump; 11. Drug delivery pipe; 12. 13. Inlet pipe; 14. Auxiliary treatment box; 15. Auxiliary connecting pipe; 16. Second recovery tank; 17. Third water pump; 18. Foam collection box; 19. Device plate; 10. Foam removal component; 1901. Swinging scraper; 1902. Drive motor; 1903. Half gear; 1904. First full gear; 1905. Torsion spring; 1906. Second full gear; 1907. Rotating wheel; 1908. Transmission wheel. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1:

[0020] Reference Figure 1-5A continuous circulation wastewater treatment device for cleaning flue pipes of a stenter includes a receiving tank 1, a multi-stage sedimentation tank 3, a first recovery tank 5, and a dosing assembly. The multi-stage sedimentation tank 3 is divided into a primary sedimentation zone 301, a secondary sedimentation zone 303, and a cross-connection zone 302. The primary sedimentation zone 301 and the secondary sedimentation zone 303 are located on opposite sides of the multi-stage sedimentation tank 3, and both of them are inclined at their bottom ends with an angle of 5-8°. The cross-connection zone 302 is located above and directly connected to the primary sedimentation zone 301. The upper end of the secondary sedimentation zone 303 is connected to the cross-connection zone 302 through a transverse connecting pipe 304. A first water pump 2 is installed at the upper end of the water receiving tank 1, connecting the water receiving tank 1 with the primary sedimentation zone 301. A second water pump 4 is installed between the multi-stage sedimentation tank 3 and the first recovery tank 5. One end of the second water pump 4 is connected to the lower end of the primary sedimentation zone 301 and the secondary sedimentation zone 303 through a three-way pipe 6, and the other end is connected to the upper end of the first recovery tank 5. The dosing assembly consists of multiple dosing tanks 8, an inlet pipe 12, and a liquid pump 10. The multiple dosing tanks 8 are located on the side of the multi-stage sedimentation tank 3. The inlet pipe 12 is located on the side of the dosing tanks 8 and is connected to each dosing tank 8. The multiple liquid pumps 10 are installed on the side of the dosing tanks 8. One end is connected to the dosing tank 8 through the liquid outlet pipe 803, and the other end extends to the top of the multi-stage sedimentation tank 3 through the guide pipe 11. Its outlet is divided into two groups. One group of outlets is located above the primary sedimentation zone 301, and the other group of outlets is connected to the horizontal connecting pipe 304. A stirring mechanism is installed inside the dosing tank 8.

[0021] The stirring mechanism includes a stirring motor 9, a stirring shaft 801, and a stirring paddle 802. Multiple stirring motors 9 are mounted on top of multiple dosing tanks 8 via a motor frame 7. The stirring shaft 801 is coaxially fixedly connected to the output shaft of the stirring motor 9 and extends into the dosing tank 8. Multiple stirring paddles 802 are evenly distributed on the side wall of the stirring shaft 801.

[0022] The drug delivery pipe 11 extends to the outlet end of the multi-stage sedimentation tank 3 and the horizontal connecting pipe 304, and is equipped with a diversion nozzle. The nozzle of the diversion nozzle is set in the direction of water flow, and an anti-clogging screen is provided at the nozzle.

[0023] In this embodiment, the wastewater generated from cleaning the stenter's flue pipe is first temporarily collected in the receiving tank 1 to prevent overflow and buffer the water flow. The first water pump 2 is started to pump the wastewater in the receiving tank 1 into the primary sedimentation zone 301 of the multi-stage sedimentation tank 3. The inclined design at the bottom of the primary sedimentation zone 301 causes large particles of fiber dust, coking carbon deposits, and other solid impurities in the wastewater to settle along the inclined bottom of the tank under gravity, thus initially achieving solid-liquid separation.

[0024] Simultaneously, the dosing assembly begins operation. The inlet pipe 12 delivers water for diluting the chemicals into each dosing tank 8. The stirring motor 9 is fixedly mounted above the dosing tank 8 via the motor frame 7. Its output shaft drives the stirring shaft 801 and the stirring paddles 802 evenly distributed on the side wall to rotate at high speed, thoroughly mixing the chemicals and water in the dosing tank 8 to prevent the chemicals from clumping and affecting the reaction effect. Subsequently, the liquid pump 10 starts, drawing the mixed chemicals from the dosing tank 8 through the liquid outlet pipe 803 and transporting them to the designated dosing point via the dosing pipe 11.

[0025] One set of flow nozzles evenly sprays the agent into the sewage above the primary sedimentation zone 301, allowing it to fully react with the sewage after initial settling, causing the emulsified oil and fine suspended matter in the sewage to coagulate and form flocs; another set of flow nozzles injects the agent into the transverse connecting pipe 304, which mixes synchronously with the sewage transported from the upper end of the secondary sedimentation zone 303 to the cross-connecting zone 302, further enhancing the flocculation reaction effect. The anti-clogging screen at the outlet end of the drug delivery pipe 11 can effectively prevent agent residue or impurities from clogging the nozzle.

[0026] Wastewater that has completed primary sedimentation and flocculation reactions flows into secondary sedimentation zone 303 through cross-connection zone 302. The inclined structure at the bottom of secondary sedimentation zone 303 promotes the continuous settling of flocculated flocs, achieving deep solid-liquid separation.

[0027] After treatment is completed, the second water pump 4 is started to simultaneously extract the supernatant from the bottom of the primary sedimentation zone 301 and the secondary sedimentation zone 303 through the three-way pipe 6, and pump it into the first recovery tank 5 for storage. Throughout the treatment process, the zoning design of the multi-stage sedimentation tank 3 and the regional dosing method are precisely matched. The chemicals are efficiently mixed with the sewage through the diversion nozzles, which greatly improves the pollutant removal efficiency. The treated water can be temporarily stored in the first recovery tank 5, and after further treatment, it can meet the recycling requirements for cleaning the stenter flue pipe. Example 2:

[0028] Reference Figure 6 A continuous circulation wastewater treatment device for cleaning the flue pipes of a stenter differs from Embodiment 1 in that an auxiliary treatment box 13 is fixedly installed on the side of the multi-stage sedimentation tank 3. The auxiliary treatment box 13 is connected to the upper end of the secondary sedimentation zone 303 through an auxiliary connecting pipe 14. A second recovery tank 15 is provided on the side of the first recovery tank 5. A third water pump 16 is installed between the second recovery tank 15 and the auxiliary treatment box 13, connecting the lower end of the auxiliary treatment box 13 and the upper part of the second recovery tank 15. A separate dosing component is provided, with its dosing pipe 11 extending to the upper part of the auxiliary treatment box 13, and a single outlet is provided on the upper part of the auxiliary treatment box 13.

[0029] A filter grid is provided at one end of the auxiliary connecting pipe 14 near the secondary sedimentation zone 303. The filter grid is detachably connected to the inside of the pipe opening of the auxiliary connecting pipe 14 and is used to intercept solid impurities discharged from the upper end of the secondary sedimentation zone 303.

[0030] In this embodiment, the wastewater from the cleaning of the stenter's flue is collected in the receiving pool 1, pumped into the multi-stage sedimentation tank 3 by the first water pump 2 to complete the initial sedimentation and flocculation in the primary sedimentation zone 301 and the deep solid-liquid separation in the secondary sedimentation zone 303. The wastewater containing fine suspended solids and residual organic matter that has not completely settled at the upper end of the secondary sedimentation zone 303 flows into the auxiliary treatment tank 13 through the auxiliary connecting pipe 14.

[0031] The detachable filter screen inside the auxiliary connection pipe 14 can effectively intercept unsettled solid impurities in the sewage, preventing impurities from entering the auxiliary treatment box 13 and affecting the deep treatment effect. The detachable design of the filter screen facilitates regular cleaning and maintenance, preventing blockage.

[0032] Simultaneously, a separately configured dosing unit is activated, with the inlet pipe 12 replenishing water to the corresponding dosing tank 8. The stirring motor 9 drives the stirring shaft 801 and stirring paddle 802 to rotate, thoroughly stirring and dissolving the chemicals. The liquid pump 10 draws the mixed chemicals through the outlet pipe 803 and precisely sprays them into the wastewater inside the auxiliary treatment tank 13 through the guide pipe 11 from the only outlet above the tank. The chemicals react fully with the wastewater, further coagulating fine suspended solids and decomposing residual recalcitrant organic matter, achieving deep purification of the wastewater. After the deep treatment is completed, the third water pump 16 is activated to pump the compliant wastewater in the auxiliary treatment tank 13 into the second recovery tank 15 for storage.

[0033] This embodiment, through the addition of auxiliary treatment tank 13 and second recycling tank 15, forms a dual treatment system of main treatment and deep auxiliary treatment. It targets the wastewater that still contains trace pollutants after secondary sedimentation, significantly improving the quality of the effluent. The detachable filter screen ensures the smooth operation of the auxiliary treatment process. The treated wastewater can be used together with the wastewater in the first recycling tank 5 as circulating water for cleaning the stenter's flue pipe, further improving the water resource reuse rate and meeting the cleaning scenarios with high water quality requirements. Example

[0034] Reference Figure 7 and Figure 8A continuous circulation wastewater treatment device for cleaning the flue pipes of a stenter differs from embodiments 1 and 2 in that a device plate 18 is fixedly connected between the first recovery tank 5 and the second recovery tank 15. Both tanks have foam collection boxes 17 fixedly installed on their side walls. A foam removal component 19 is installed on the device plate 18 for reciprocating oscillation to scrape away residual foam and oil residue on the water surface. The foam removal component 19 includes a pair of oscillating scrapers 1901, a first full gear 1904, and a rotating wheel 1907. The pair of oscillating scrapers 1901 are symmetrically arranged above the first recovery tank 5 and the second recovery tank 15, and are fixedly connected to the first full gear 1904 and the rotating wheel 1907 respectively. The first full gear 1904 and the rotating wheel 1907 are rotatably connected to the upper end of the device plate 18. A drive mechanism for driving the first full gear 1904 to reciprocate is installed on the device plate 18. A transmission mechanism for causing the first full gear 1904 and the rotating wheel 1907 to rotate in opposite directions is also installed on the device plate 18.

[0035] The drive mechanism includes a drive motor 1902, a half gear 1903, and a torsion spring 1905. The drive motor 1902 is fixedly mounted on the upper end of the device plate 18. The half gear 1903 is coaxially fixedly connected to the output shaft of the drive motor 1902 and intermittently meshes with the first full gear 1904. The torsion spring 1905 is elastically connected between the full gear 1904 and the device plate 18.

[0036] The transmission mechanism includes a second full gear 1906 and a pair of transmission wheels 1908. The second full gear 1906 is rotatably connected to the upper end of the device plate 18 and meshes with the first full gear 1904. The pair of transmission wheels 1908 are coaxially fixedly connected to the second full gear 1906 and the rotating wheel 1907 respectively. The pair of transmission wheels 1908 are connected by a transmission belt.

[0037] The end of the swing scraper 1901 away from the first full gear 1904 and the rotating wheel 1907 is provided with a flexible scraper. The flexible scraper is attached to the pool wall and water surface of the first recycling pool 5 and the second recycling pool 15, and the swing trajectory of the swing scraper 1901 covers the width of the water surface of the first recycling pool 5 and the second recycling pool 15.

[0038] In this embodiment, the wastewater from cleaning the stenter's flue pipes is collected in the receiving pool 1, undergoes graded sedimentation and flocculation in the multi-stage sedimentation tank 3, and is further purified in the auxiliary treatment tank 13. It is then pumped into the first recovery tank 5 and the second recovery tank 15 for storage via the second water pump 4 and the third water pump 16, respectively. Because a small amount of residual emulsified oil and flocculent residue in the wastewater easily forms foam and oil sludge on the water surface, if not removed in time, it will affect the quality of the recycled water and clog the spraying equipment. Therefore, the foam removal component 19 is activated for targeted treatment.

[0039] The drive motor 1902 is fixedly installed on the upper end of the device plate 18. Its output shaft drives the half gear 1903 to rotate. The half gear 1903 intermittently meshes with the first full gear 1904. When the half gear 1903 meshes with the first full gear 1904, it drives the first full gear 1904 to rotate and compresses the torsion spring 1905 at the same time. When the half gear 1903 disengages from the first full gear 1904, the torsion spring 1905 releases its elastic potential energy and drives the first full gear 1904 to reset in the opposite direction, thereby realizing the reciprocating rotation of the first full gear 1904.

[0040] The oscillating scraper 1901, which is fixedly connected to the first full gear 1904, oscillates synchronously with it. When the first full gear 1904 rotates, it drives the meshing second full gear 1906 to rotate. The second full gear 1906 drives another transmission wheel 1908 and the rotating wheel 1907 to rotate in the opposite direction through the coaxially fixed transmission wheel 1908 and transmission belt, so that the other oscillating scraper 1901 oscillates synchronously in the opposite direction.

[0041] The flexible scraper at the end of the swing scraper 1901 is in close contact with the walls and water surface of the first recovery tank 5 and the second recovery tank 15. Its swing trajectory completely covers the width of the water surface in both recovery tanks, effectively scraping away foam and oil residue from all parts of the water surface. The scraped foam and oil residue slide down the tank wall under the swing thrust and are collected and processed in the foam collection box 17 on the side. The entire foam removal process is automated and requires no manual intervention. The flexible scraper design ensures both effective foam removal and avoids scratching the tank walls.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A continuous circulating wastewater treatment device for cleaning the flue pipes of a stenter, comprising a receiving tank (1), a multi-stage sedimentation tank (3), a first recovery tank (5), and a dosing assembly, characterized in that: The multi-stage sedimentation tank (3) is divided into a primary sedimentation zone (301), a secondary sedimentation zone (303), and a cross-connection zone (302). The primary sedimentation zone (301) and the secondary sedimentation zone (303) are located on both sides of the multi-stage sedimentation tank (3), and both of them are inclined at their bottom ends with an angle of 5-8°. The cross-connection zone (302) is located above the primary sedimentation zone (301) and is directly connected to it. The upper end of the secondary sedimentation zone (303) is connected to the cross-connection zone (302) through a transverse connecting pipe (304). A first water pump (2) is installed at the upper end of the water receiving tank (1), connecting the water receiving tank (1) with the primary sedimentation zone (301). A second water pump (4) is installed between the multi-stage sedimentation tank (3) and the first recovery tank (5). One end of the second water pump (4) is connected to the lower end of the primary sedimentation zone (301) and the secondary sedimentation zone (303) through a three-way pipe (6), and the other end is connected to the upper end of the first recovery tank (5). The dosing assembly consists of multiple dosing tanks (8), an inlet pipe (12), and a liquid pump (10). The multiple dosing tanks (8) are located on the side of the multi-stage sedimentation tank (3). The inlet pipe (12) is located on the side of the dosing tanks (8) and is connected to the dosing tanks (8). The multiple liquid pumps (10) are installed on the side of the dosing tanks (8). One end is connected to the dosing tanks (8) through the liquid outlet pipe (803), and the other end extends to the top of the multi-stage sedimentation tank (3) through the guide pipe (11). The outlets are divided into two groups. One group of outlets is located above the primary sedimentation zone (301), and the other group of outlets is connected to the horizontal connecting pipe (304). A stirring mechanism is installed inside the dosing tanks (8).

2. The continuous circulating wastewater treatment equipment for cleaning the flue pipes of a stenter as described in claim 1, characterized in that: The stirring mechanism includes a stirring motor (9), a stirring shaft (801), and a stirring paddle (802). Multiple stirring motors (9) are mounted above multiple dosing tanks (8) via a motor frame (7). The stirring shaft (801) is coaxially fixedly connected to the output shaft of the stirring motor (9) and extends into the dosing tank (8). Multiple stirring paddles (802) are evenly distributed on the side wall of the stirring shaft (801).

3. The continuous circulating styling machine flue cleaning wastewater treatment equipment according to claim 1, characterized in that: An auxiliary treatment box (13) is fixedly installed on the side of the multi-stage sedimentation tank (3). The auxiliary treatment box (13) is connected to the upper end of the secondary sedimentation zone (303) through an auxiliary connecting pipe (14). A second recovery tank (15) is provided on the side of the first recovery tank (5). A third water pump (16) is installed between the second recovery tank (15) and the auxiliary treatment box (13), connecting the lower end of the auxiliary treatment box (13) and the upper part of the second recovery tank (15). A separate set of dosing components is provided, with its dosing pipe (11) extending to the upper part of the auxiliary treatment box (13), and a single outlet is provided on the upper part of the auxiliary treatment box (13).

4. The continuous circulating wastewater treatment equipment for cleaning the flue pipes of a stenter as described in claim 3, characterized in that: A device plate (18) is fixedly connected between the first recycling tank (5) and the second recycling tank (15). Both tanks have foam collection boxes (17) fixedly installed on their side walls. A foam removal component (19) is installed on the device plate (18) for reciprocating oscillation to scrape away the foam and oil residue remaining on the water surface. The foam removal component (19) includes a pair of oscillating scrapers (1901), a first gear (1904), and a rotating wheel (1907). The pair of oscillating scrapers (1901) are symmetrically arranged in the first recycling tank (5). 5) Above the second recycling pool (15), and fixedly connected to the first full gear (1904) and the rotating wheel (1907) respectively. The first full gear (1904) and the rotating wheel (1907) are rotatably connected to the upper end of the device plate (18). The device plate (18) is equipped with a drive mechanism for driving the first full gear (1904) to reciprocate. The device plate (18) is also equipped with a transmission mechanism for making the first full gear (1904) and the rotating wheel (1907) rotate in opposite directions.

5. The continuous circulating styling machine flue cleaning wastewater treatment equipment according to claim 4, characterized in that: The drive mechanism includes a drive motor (1902), a half gear (1903), and a torsion spring (1905). The drive motor (1902) is fixedly mounted on the upper end of the device plate (18). The half gear (1903) is coaxially fixedly connected to the output shaft of the drive motor (1902) and intermittently meshes with the first full gear (1904). The torsion spring (1905) is elastically connected between the full gear (1904) and the device plate (18).

6. The continuous circulating wastewater treatment equipment for cleaning the flue pipes of a stenter as described in claim 4, characterized in that: The transmission mechanism includes a second full gear (1906) and a pair of transmission wheels (1908). The second full gear (1906) is rotatably connected to the upper end of the device plate (18) and meshes with the first full gear (1904). The pair of transmission wheels (1908) are coaxially fixedly connected to the second full gear (1906) and the rotating wheel (1907), respectively. The pair of transmission wheels (1908) are connected by a transmission belt.

7. The continuous circulating wastewater treatment equipment for cleaning the flue pipes of a stenter as described in claim 4, characterized in that: The swing scraper (1901) is provided with a flexible scraper at one end away from the first full gear (1904) and the rotating wheel (1907). The flexible scraper is attached to the pool wall and water surface of the first recycling pool (5) and the second recycling pool (15), and the swing trajectory of the swing scraper (1901) covers the width of the water surface of the first recycling pool (5) and the second recycling pool (15).

8. The continuous circulating styling machine flue cleaning wastewater treatment equipment according to claim 3, characterized in that: The auxiliary connecting pipe (14) is provided with a filter grid at one end near the secondary sedimentation zone (303). The filter grid is detachably connected to the inside of the pipe opening of the auxiliary connecting pipe (14) and is used to intercept solid impurities discharged from the upper end of the secondary sedimentation zone (303).

9. The continuous circulating wastewater treatment equipment for cleaning the flue pipes of a stenter as described in claim 1, characterized in that: The drug delivery pipe (11) extends to the outlet end of the multi-stage sedimentation tank (3) and the horizontal connecting pipe (304), and is equipped with a diversion nozzle. The nozzle of the diversion nozzle is set facing the water flow direction, and an anti-clogging screen is provided at the nozzle.

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