Vortex type multi-stage filtering device based on sewage treatment

Abstract

The invention relates to the technical field of sewage purification, in particular to a vortex type multistage filtering device based on sewage treatment.The vortex type multistage filtering device comprises a cylindrical outer shell, a feeding pipe is fixedly installed at the upper end of the cylindrical outer shell and communicated with the cylindrical outer shell, and the feeding pipe and the cylindrical outer shell are eccentrically installed; a conical container is fixedly installed at the lower end of the cylindrical outer shell and communicated with the cylindrical outer shell, a sand setting opening is fixedly formed in the lower end of the conical container, an overflow pipe extending into the conical container is fixedly installed in the middle of the cylindrical outer shell, a flow dividing impeller is rotationally connected to the overflow pipe, and flow dividing blades are fixedly connected to the flow dividing impeller. A side wall cleaning device is arranged on the side wall of the conical container, so that the middle section of the conical container can be effectively cleaned under the condition that external power is not needed, and the situation that impurities are easily attached to the side wall of the conical container, vortex-shaped water flow is influenced, and the water flow filtering effect is influenced is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of sewage purification, in particular to a vortex type multi-stage filtering device based on sewage treatment. Background Art

[0002] The hydrocyclone is a commonly used and effective impurity classification equipment, which is mainly used to separate impurities from relatively turbid water. Its working principle is relatively simple. Structurally, the hydrocyclone is composed of a feed pipe, a cylindrical outer shell, an overflow pipe, a conical container and a sand settling port. Under the action of pressure, the turbid water flows into the shell along the tangent direction of the cylinder through the feed pipe, and makes a rotary motion in the shell. The impurities in the turbid water flow enter the periphery of the rotating flow due to the large centrifugal force. And flow downward with the water flow, and finally discharged from the sand settling port at the bottom. The water flow at the center of the rotation flows out from the overflow pipe. Under the multiple series filtration of multiple hydrocyclones, the purpose of sewage treatment is achieved.

[0003] However, when the water flow makes a vortex-like rotational motion in the conical container, when the water flow flows to the middle position of the conical container, the speed of the water flow at this time is much lower than when the water flow just enters the conical container. Therefore, when cleaning the water flow containing viscous impurities, these impurities are easy to adhere to the side wall of the conical container. When the attachment reaches a certain amount, it will affect the generation of the vortex-like water flow, thereby affecting the filtering effect of the water flow. The existing hydrocyclone does not effectively deal with the above phenomenon.

[0004] Therefore, it is necessary to propose a vortex multi-stage filtering device based on sewage treatment to solve the above technical problems. Summary of the invention

[0005] The invention provides a vortex type multi-stage filtering device based on sewage treatment, which can effectively clean the middle section of a conical container without external power supply.

[0006] The present invention provides a vortex type multi-stage filtering device based on sewage treatment, comprising a cylindrical outer shell, a feeding pipe is fixedly installed on the upper end of the cylindrical outer shell, the feeding pipe is communicated with the cylindrical outer shell, and the feeding pipe and the cylindrical outer shell are eccentrically installed; A conical container, wherein the lower end of the cylindrical outer shell is fixedly mounted with the conical container, and the conical container is in communication with the cylindrical outer shell; A sand settling port, which is fixedly mounted at the lower end of the conical container and communicates with the conical container; the sand settling port is fixedly mounted at the lower end of the conical container and communicates with the conical container; An overflow pipe, the overflow pipe is fixedly installed at the middle position of the cylindrical outer shell and extends into the conical container, and the outer end of the lower end of the overflow pipe is an inclined surface; A splitter impeller, the splitter impeller is rotatably connected to the overflow pipe, a splitter blade is fixedly connected to the lower end of the splitter impeller, and a plurality of the splitter blades are evenly distributed along the circumference of the splitter impeller; A side wall cleaning device is arranged on the side wall of the conical container and driven by the splitter impeller. A plurality of the side wall cleaning devices are evenly distributed along the circumference of the conical container.

[0007] Preferably, the side wall cleaning device includes a primary driving mechanism, a secondary driving mechanism and a cleaning mechanism, the cleaning mechanism includes a wall scraping slider and a wall scraping mechanism, a wall scraping sliding groove is opened on the side wall of the conical container, a wall scraping slider is slidably connected in the wall scraping sliding groove, a shaking mechanism is arranged on the wall scraping slider, a wall scraping mechanism is installed on the shaking mechanism, the wall scraping slider is driven by the secondary driving mechanism, the secondary driving mechanism is driven by the primary driving mechanism, and the primary driving mechanism is connected to the diverter impeller.

[0008] Preferably, the primary driving mechanism comprises a main driving bevel gear, a secondary driving bevel gear, a first driving roller, a first driving belt and a driven roller, the main driving bevel gear is coaxially arranged with the overflow pipe, the main driving bevel gear is wrapped around the outer side of the diverter blade and the main driving bevel gear is fixedly connected to the diverter blade, a gear meshing groove is provided on the side of the conical container, the toothed end of the main driving bevel gear extends into the gear meshing groove, the edge of the main driving bevel gear is meshed with the secondary driving bevel gear, the secondary driving bevel gear is rotatably connected to the side wall of the conical container, the first driving roller is coaxially fixedly connected to the secondary driving bevel gear, the side wall of the conical container is provided with a receiving groove corresponding to the secondary driving bevel gear along a direction parallel to the side wall of the conical container, the receiving groove is communicated with the scraper sliding groove, and the receiving groove is also provided with a driven roller at the lower end of the secondary driving bevel gear, and the first driving roller and the driven roller are connected by the first driving belt.

[0009] Preferably, the secondary driving mechanism includes a second driving roller and a second driving belt, the second driving roller is arranged in the accommodating groove, the second driving roller is arranged in two up and down, the second driving roller located at the upper side is coaxially fixedly connected to the driven roller, and the two second driving rollers are rotatably connected to the side wall of the conical container, the two second driving rollers are connected by a second driving belt, the second driving belt is provided with a cylindrical protrusion, a reciprocating rod is fixedly connected to the wall scraping slider, the reciprocating rod is provided with a first reciprocating groove, and the first reciprocating groove is slidably connected to the cylindrical protrusion on the second driving belt.

[0010] Preferably, the shaking mechanism includes a shaking roller, a shaking slider and a shaking rod, the scraper slider is laterally provided with a roller mounting groove, both sides of the roller mounting groove are rotatably connected with shaking rollers, one end of the scraper slider close to the central axis of the conical container is provided with a shaking groove in the opposite direction perpendicular to the roller mounting groove, the shaking groove is communicated with the roller mounting groove, the shaking slider is slidably connected in the shaking groove, the shaking slider passes through the shaking groove and is fixedly installed with a shaking rod, the shaking rod is provided with a second reciprocating groove, a protrusion is installed near the edge of the shaking roller, and the second reciprocating groove is slidably connected to the protrusion on the shaking roller.

[0011] Preferably, the wall scraping mechanism includes a wall scraping spring bar, a wall scraping rubber strip and a clamping block, the clamping block is fixedly mounted on the shaking slider, the shaking slider is fixedly mounted with wall scraping spring bars on both sides in the horizontal reverse direction, and the wall scraping rubber strip is fixedly mounted on one end of the wall scraping spring bar close to the side wall of the conical container.

[0012] Preferably, a plurality of grooves are arranged transversely along the upper edge of the wall scraping rubber strip.

[0013] Preferably, the clamping block is installed on the shaking slider in a clamping manner, and a clamping groove is provided on the shaking slider. A spring receiving groove is provided in the middle of the clamping block, and a clamping rod is slidably connected to the upper and lower ends of the spring receiving groove, and a clamping spring is fixedly connected between the two clamping rods. A slot is provided on the shaking slider corresponding to the clamping rod, and the clamping rod is clamped into the slot.

[0014] Preferably, closed grooves are provided on both upper and lower sides of the wall scraping sliding groove on the conical container, and closed strips are fixedly installed on both upper and lower sides of the wall scraping sliding block, and the closed strips are slidably connected in the closed grooves. Beneficial Effects

[0015] (1) The present invention drives the side wall cleaning device to clean the side wall of the middle part of the conical container through the splitter impeller to prevent impurities from easily adhering to the side wall of the conical container. When a certain amount of impurities are attached, it will affect the generation of vortex-shaped water flow, thereby affecting the filtering effect of the water flow. At the same time, the overflow pipe extends into the conical container to prevent unfiltered water containing impurities from flowing into the overflow port and affecting the filtering effect.

[0016] (2) The present invention generates rolling by causing the shaking roller to roll in contact with the scraper sliding groove. At this time, the protrusion on the shaking roller is slidably connected with the second reciprocating groove, thereby driving the shaking rod and the shaking slider to make reciprocating motion. The shaking slider drives the scraper mechanism thereon to generate a shaking state, thereby improving the cleaning effect on the side wall of the conical container.

[0017] (3) The present invention utilizes a scraper strip made of elastic metal to press the scraper strip onto the side wall of the conical container. At the same time, the scraper strip can be bent accordingly according to the change in the diameter of the cross section of the conical container, thereby improving the fit between the scraper strip and the side of the conical container, thereby further improving the cleaning effect on the side wall of the conical container. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cutaway structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle; Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at C in the middle; Figure 6 For the present invention Figure 2 A magnified schematic diagram of the structure at D in the middle; Figure 7 It is a schematic diagram of the structure of the cleaning structure in the present invention; Figure 8 For the present invention Figure 7 The enlarged schematic diagram of the structure at E in the middle; Fig. 9 It is a structural schematic diagram of the shaking mechanism in the present invention.

[0020] In the figure: 1, cylindrical outer shell; 2, feeding pipe; 3, conical container; 31, wall scraping sliding groove; 32, gear meshing groove; 33, receiving groove; 34, closing groove; 35, closing strip; 4, sand settling port; 5, overflow pipe; 6, splitter impeller; 61, splitter blade; 7, side wall cleaning device; 71, primary driving mechanism; 711, main driving bevel gear; 712, secondary driving bevel gear; 713, first driving roller; 714, first driving belt; 715, driven gear; 72, secondary driving mechanism; 721, second driving roller; 722, The second driving belt; 73, cleaning mechanism; 731, wall scraping slider; 7311, reciprocating rod; 7312, first reciprocating groove; 7313, roller mounting groove; 7314, shaking slide groove; 732, wall scraping mechanism; 7321, wall scraping spring strip; 7322, wall scraping rubber strip; 7323, snap-in block; 7324, spring mounting groove; 7325, snap-in rod; 7326, snap-in spring; 74, shaking mechanism; 741, shaking roller; 742, shaking slider; 7421, snap-in groove; 743, shaking rod; 7431, second reciprocating groove. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] First embodiment: Figure 1 and Figure 2 As shown, the present invention provides a vortex multi-stage filtering device based on sewage treatment, comprising a cylindrical outer shell 1, a feeding pipe 2 is fixedly installed on the upper end of the cylindrical outer shell 1, the feeding pipe 2 is communicated with the cylindrical outer shell 1, and the feeding pipe 2 is eccentrically installed with the cylindrical outer shell 1; A conical container 3, the lower end of the cylindrical outer shell 1 is fixedly mounted with the conical container 3, and the conical container 3 is communicated with the cylindrical outer shell 1; A sand settling port 4, which is fixedly mounted at the lower end of the conical container 3 and communicates with the conical container 3; the sand settling port 4 is fixedly mounted at the lower end of the conical container 3 and communicates with the conical container 3; An overflow pipe 5, the overflow pipe 5 is fixedly installed at the middle position of the cylindrical outer shell 1 and extends into the conical container 3, and the outer end of the lower end of the overflow pipe 5 is an inclined surface; A splitter impeller 6, the splitter impeller 6 is rotatably connected to the overflow pipe 5, a splitter blade 61 is fixedly connected to the splitter impeller 6, and a plurality of the splitter blades 61 are evenly distributed along the circumference of the splitter impeller 6; The side wall cleaning device 7 is arranged on the side wall of the conical container 3 and is driven by the splitter impeller 6 . A plurality of the side wall cleaning devices 7 are evenly distributed along the circumference of the conical container 3 .

[0023] During the sewage filtration process, the turbid water flows into the shell through the feed pipe 2 along the tangent direction of the column under the action of external pressure, and performs a rotary motion in the shell. Impurities in the turbid water flow enter the periphery of the rotary flow due to the action of a large centrifugal force, and flow downward with the water flow, and are finally discharged from the sand settling nozzle at the bottom. The water flow at the rotary center flows out from the overflow pipe 5. In this process, the water flow will impact the splitter blade 61, thereby causing the splitter impeller 6 to rotate, and the splitter impeller 6 will drive the side wall cleaning device 7 to clean the side wall of the middle part of the conical container 3.

[0024] Second embodiment: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the side wall cleaning device 7 includes a primary driving mechanism 71, a secondary driving mechanism 72 and a cleaning mechanism 73, the cleaning mechanism 73 includes a wall scraping slider 731 and a wall scraping mechanism 732, a wall scraping sliding groove 31 is provided on the side wall of the conical container 3, a wall scraping slider 731 is slidably connected in the wall scraping sliding groove 31, a shaking mechanism 74 is provided on the wall scraping slider 731, and a wall scraping mechanism 732 is installed on the shaking mechanism 74, the wall scraping slider 731 is driven by the secondary driving mechanism 72, the secondary driving mechanism 72 is driven by the primary driving mechanism 71, and the primary driving mechanism 71 is connected to the diverter impeller 6.

[0025] When the side wall cleaning device 7 cleans the side wall of the conical container 3, the diverter impeller 6 drives the primary driving mechanism 71 to operate, and the primary driving mechanism 71 drives the secondary driving mechanism 72 to operate. The secondary driving mechanism 72 drives the scraping slider 731 to reciprocate along the side wall of the conical container 3, and the scraping mechanism 732 on the scraping slider 731 cleans the side wall of the conical container 3.

[0026] The third embodiment: Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the primary drive mechanism 71 includes a main drive bevel gear 711, a secondary drive bevel gear 712, a first drive roller 713, a first drive belt 714 and a driven roller 715, the main drive bevel gear 711 is coaxially arranged with the overflow pipe 5, the main drive bevel gear 711 is wrapped around the outside of the splitter blade 61 and the main drive bevel gear 711 is fixedly connected to the splitter blade 61, a gear meshing groove 32 is opened on the side of the conical container 3, the toothed end of the main drive bevel gear 711 extends into the gear meshing groove 32, and the edge of the main drive bevel gear 711 A secondary driving bevel gear 712 is meshed, and the secondary driving bevel gear 712 is rotatably connected to the side wall of the conical container 3. A first driving roller 713 is coaxially fixedly connected to the secondary driving bevel gear 712. The side wall of the conical container 3 is provided with a receiving groove 33 corresponding to the secondary driving bevel gear 712 along a direction parallel to the side wall of the conical container 3. The receiving groove 33 is communicated with the scraping sliding groove 31. A driven roller 715 is also provided at the lower end of the secondary driving bevel gear 712. The first driving roller 713 and the driven roller 715 are connected by a first driving belt 714.

[0027] During the operation of the first driving device, the splitter impeller 6 will drive the main driving bevel gear 711 to rotate, the main driving bevel gear 711 will drive the secondary driving bevel gear 712 to rotate, and the secondary driving bevel gear will drive the first driving roller 713 fixedly connected to it to rotate, and the first driving roller 713 will drive the driven roller 715 to rotate through the first driving belt 714.

[0028] Fourth embodiment: Figure 4 , Figure 5 , Figure 7 and Fig. 9 As shown, the secondary driving mechanism 72 includes a second driving roller 721 and a second driving belt 722. The second driving roller 721 is arranged in the accommodating groove 33. The second driving roller 721 is arranged in two up and down directions. The second driving roller 721 located at the upper side is coaxially fixedly connected with the driven roller 715, and the two second driving rollers 721 are rotatably connected to the side wall of the conical container 3. The two second driving rollers 721 are connected by a second driving belt 722. A cylindrical protrusion is provided on the second driving belt 722. A reciprocating rod 7311 is fixedly connected to the scraping slider 731. A first reciprocating groove 7312 is provided on the reciprocating rod 7311. The first reciprocating groove 7312 is slidably connected to the cylindrical protrusion on the second driving belt 722.

[0029] The first driving roller 713 located at the bottom will drive the second driving roller 721 fixedly connected thereto to rotate, and the second driving roller 721 will drive the second driving belt 722 to perform a rotational motion. The cylindrical protrusion on the second driving belt 722 will be slidably connected to the first reciprocating groove 7312, so that the reciprocating rod 7311 drives the scraping slider 731 to perform a reciprocating motion, so that the scraping mechanism 732 on the scraping slider 731 will repeatedly clean the side wall of the conical container 3.

[0030] Fifth embodiment: Figure 7 , Figure 8 and Fig. 9 As shown, the shaking mechanism 74 includes a shaking roller 741, a shaking slider 742 and a shaking rod 743. The scraper slider 731 is horizontally provided with a roller mounting groove 7313, and the two sides of the roller mounting groove 7313 are rotatably connected with the shaking roller 741. The end of the scraper slider 731 close to the central axis of the conical container 3 is provided with a shaking groove 7314 in the opposite direction perpendicular to the roller mounting groove 7313. The shaking groove 7314 is communicated with the roller mounting groove 7313. The shaking slider 742 is slidably connected in the shaking groove 7314. The shaking slider 742 passes through the shaking groove 7314 and is fixedly installed with a shaking rod 743. The shaking rod 743 is provided with a second reciprocating groove 7431. A protrusion is installed near the edge of the shaking roller 741, and the second reciprocating groove 7431 is slidably connected to the protrusion on the shaking roller 741.

[0031] When the scraper slider 731 slides along the scraper sliding groove 31, the shaking roller 741 will roll in contact with the scraper sliding groove 31 to generate rolling. At this time, the protrusion on the shaking roller 741 will be slidably connected with the second reciprocating groove 7431, thereby driving the shaking rod 743 and the shaking slider 742 to reciprocate. The shaking slider 742 will drive the scraper mechanism 732 thereon to generate a shaking state, thereby improving the cleaning effect on the side wall of the conical container 3.

[0032] Sixth embodiment: Figure 7 , Figure 8 and Fig. 9 As shown, the wall scraping mechanism 732 includes a wall scraping spring bar 7321, a wall scraping rubber strip 7322 and a clamping block 7323. The clamping block 7323 is fixedly mounted on the shaking slider 742. The wall scraping spring bar 7321 is fixedly mounted on both sides of the shaking slider 742 in the horizontal reverse direction. The wall scraping rubber strip 7322 is fixedly mounted on one end of the wall scraping spring bar 7321 close to the side wall of the conical container 3.

[0033] Because the radius of the cross section of the conical container 3 changes during the movement of the scraper mechanism 732 along the side wall of the conical container 3, the scraper strip 7322 is pressed against the side wall of the conical container 3 by the scraper spring strip 7321 made of elastic metal, and can bend accordingly according to the change in the diameter of the cross section of the conical container 3, thereby improving the fit between the scraper strip 7322 and the side of the conical container 3, thereby improving the cleaning effect on the side wall of the conical container 3, such as Figure 7 As shown, a plurality of grooves are arranged transversely on the upper edge of the scraper strip 7322, so that the friction between the scraper strip 7322 and the side wall of the conical container 3 can be further improved, thereby improving the cleaning effect.

[0034] Seventh embodiment: Figure 7 and Figure 8 As shown, the clamping block 7323 is installed on the shaking slider 742 in a clamping manner, and the shaking slider 742 is provided with a clamping groove 7421, and a spring receiving groove 7324 is provided in the middle of the clamping block 7323, and the upper and lower ends of the spring receiving groove 7324 are slidably connected with a clamping rod 7325, and a clamping spring 7326 is fixedly connected between the two clamping rods 7325, and a slot is provided on the shaking slider 742 corresponding to the clamping rod 7325, and the clamping rod 7325 is clamped into the slot.

[0035] When the scraper rubber strip 7322 ages, the clamping rod 7325 can be pressed down so that the scraper mechanism 732 can be quickly removed, which is convenient for maintenance and replacement.

[0036] Eighth embodiment: Figure 5 and Figure 6 As shown, closed grooves 34 are provided on both upper and lower sides of the scraping sliding groove 31 on the conical container 3 , and closed strips 35 are fixedly installed on both upper and lower sides of the scraping sliding block 731 , and the closed strips 35 are slidably connected in the closed grooves 34 .

[0037] In this way, during the cleaning process of the side wall of the conical container 3, it is possible to prevent mud and sand from entering the receiving groove 33 and affecting the operation of the mechanism.

[0038] The working principle of the present invention is that during the sewage filtration process, the turbid water flow enters the shell along the tangent direction of the column through the feed pipe 2 under the action of external pressure, and performs a rotary motion in the shell. The impurities in the turbid water flow enter the periphery of the rotary flow due to the action of the larger centrifugal force. And flow downward with the water flow, and finally discharged from the sand settling nozzle at the bottom, and the water flow at the center of the rotation flows out from the overflow pipe 5. In this process, the water flow will impact the diverter blade 61, so that the diverter impeller 6 will rotate, and the diverter impeller 6 will drive the side wall cleaning device 7 to clean the side wall of the middle part of the conical container 3. In the process of the side wall cleaning device 7 cleaning the side wall of the conical container 3, the diverter impeller 6 drives the primary drive mechanism 71 to operate, and the primary drive mechanism 71 drives the secondary drive mechanism 72 to operate, and the secondary drive mechanism 72 drives the scraper slider 731 to reciprocate along the side wall of the conical container 3, scraping The scraping mechanism 732 on the wall slider 731 cleans the side wall of the conical container 3. During the operation of the first driving device, the splitter impeller 6 drives the main driving bevel gear 711 to rotate, the main driving bevel gear 711 drives the slave driving bevel gear to rotate, the slave driving bevel gear drives the first driving roller 713 fixedly connected thereto to rotate, the first driving roller 713 drives another first driving roller 713 to rotate through the first driving belt 714, the first driving roller 713 located below drives the second driving roller 721 fixedly connected thereto to rotate, the second driving roller 721 drives the second driving belt 714 to rotate. 22 makes a rotational motion, the cylindrical protrusion on the second driving belt 722 will be slidably connected with the first reciprocating groove 7312, so that the reciprocating rod 7311 drives the scraping slider 731 to reciprocate, so that the scraping mechanism 732 on the scraping slider 731 will repeatedly clean the side wall of the conical container 3, and in the process of the scraping slider 731 sliding along the scraping sliding groove 31, the shaking roller 741 will roll with the scraping sliding groove 31 to produce rolling, and at this time, the protrusion on the shaking roller 741 will be slidably connected with the second reciprocating groove 7431, thereby driving the shaking rod 743 and the shaking slider 742 to reciprocate, and the shaking The slider 742 will drive the scraper mechanism 732 thereon to produce a shaking state, thereby improving the cleaning effect on the side wall of the conical container 3. Because the scraper mechanism 732 moves along the side wall of the conical container 3, the radius of the cross section of the conical container 3 will change. The scraper spring strip 7321 made of elastic metal will press the scraper rubber strip 7322 onto the side wall of the conical container 3, and at the same time, it can bend accordingly according to the change in the diameter of the cross section of the conical container 3, thereby improving the fit between the scraper rubber strip 7322 and the side of the conical container 3, thereby improving the cleaning effect on the side wall of the conical container 3. Figure 7As shown, a plurality of grooves are arranged transversely on the upper edge of the scraper strip 7322, so that the friction between the scraper strip 7322 and the side wall of the conical container 3 can be further improved, thereby improving the cleaning effect.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vortex multi-stage filtering device for sewage treatment, comprising a cylindrical outer shell (1), characterized in that: A feeding pipe (2) is fixedly mounted on the upper end of the cylindrical outer shell (1), the feeding pipe (2) is in communication with the cylindrical outer shell (1), and the feeding pipe (2) and the cylindrical outer shell (1) are eccentrically mounted; A conical container (3), the conical container (3) being fixedly mounted on the lower end of the cylindrical outer shell (1), and the conical container (3) being in communication with the cylindrical outer shell (1); A sand settling port (4), the sand settling port (4) being fixedly mounted at the lower end of the conical container (3) and communicating with the conical container (3); An overflow pipe (5), the overflow pipe (5) is fixedly mounted at a middle position of the cylindrical outer shell (1) and extends into the conical container (3), and the outer end of the lower end of the overflow pipe (5) is an inclined surface; A splitter impeller (6), the splitter impeller (6) being rotatably connected to the overflow pipe (5), a splitter blade (61) being fixedly connected to the lower end of the splitter impeller (6), and a plurality of the splitter blades (61) being evenly distributed along the circumference of the splitter impeller (6); A side wall cleaning device (7), wherein the side wall cleaning device (7) is arranged on the side wall of the conical container (3) and is driven by the splitter impeller (6), and a plurality of the side wall cleaning devices (7) are evenly distributed along the circumference of the conical container (3).

2. A vortex type multi-stage filtering device based on sewage treatment according to claim 1, characterized in that: The side wall cleaning device (7) comprises a primary driving mechanism (71), a secondary driving mechanism (72) and a cleaning mechanism (73); the cleaning mechanism (73) comprises a wall scraping slider (731) and a wall scraping mechanism (732); a wall scraping sliding groove (31) is provided on the side wall of the conical container (3); a wall scraping slider (731) is slidably connected in the wall scraping sliding groove (31); a shaking mechanism (74) is provided on the wall scraping slider (731); the wall scraping mechanism (732) is installed on the shaking mechanism (74); the wall scraping slider (731) is driven by the secondary driving mechanism (72); the secondary driving mechanism (72) is driven by the primary driving mechanism (71); and the primary driving mechanism (71) is connected to the diverter impeller (6).

3. A vortex type multi-stage filtering device based on sewage treatment according to claim 2, characterized in that: The primary drive mechanism (71) comprises a main drive bevel gear (711), the main drive bevel gear (711) is coaxially arranged with the overflow pipe (5), the main drive bevel gear (711) is wrapped around the outside of the splitter blade (61) and the main drive bevel gear (711) is fixedly connected to the splitter blade (61), a gear meshing groove (32) is provided on the side of the conical container (3), a toothed end of the main drive bevel gear (711) extends into the gear meshing groove (32), an edge of the main drive bevel gear (711) is meshed with a secondary drive bevel gear (712), and the secondary drive bevel gear (712) is meshed with the secondary drive bevel gear (712). 12) is rotatably connected to the side wall of the conical container (3), the secondary driving bevel gear (712) is coaxially fixedly connected with a first driving roller (713), the side wall of the conical container (3) is provided with a receiving groove (33) corresponding to the secondary driving bevel gear (712) along a direction parallel to the side wall of the conical container (3), the receiving groove (33) is communicated with the wall scraping sliding groove (31), the receiving groove (33) is also provided with a driven roller (715) at the lower end of the secondary driving bevel gear (712), and the first driving roller (713) and the driven roller (715) are connected by a first driving belt (714).

4. A vortex type multi-stage filtering device based on sewage treatment according to claim 3, characterized in that: The secondary driving mechanism (72) comprises a second driving roller (721), the second driving roller (721) being arranged in the accommodating groove (33), the second driving roller (721) being arranged in two in an upper and lower direction, the second driving roller (721) located at the upper side being coaxially fixedly connected to the driven roller (715), and the two second driving rollers (721) being rotatably connected to the side wall of the conical container (3), the two second driving rollers (721) being connected via a second driving belt (722), the second driving belt (722) being provided with a cylindrical protrusion, the wall scraping slider (731) being fixedly connected with a reciprocating rod (7311), the reciprocating rod (7311) being provided with a first reciprocating groove (7312), the first reciprocating groove (7312) being slidably connected to the cylindrical protrusion on the second driving belt (722).

5. A vortex type multi-stage filtering device based on sewage treatment according to claim 4, characterized in that: The shaking mechanism (74) includes a shaking roller (741), the wall scraping slider (731) is laterally provided with a roller mounting groove (7313), both sides of the roller mounting groove (7313) are rotatably connected with the shaking rollers (741), and one end of the wall scraping slider (731) close to the central axis of the conical container (3) is provided with a shaking slide groove (7314) in the opposite direction perpendicular to the roller mounting groove (7313), and the shaking slide groove (7314) is connected to the roller mounting groove (7313). The mounting groove (7313) is communicated with each other, a shaking slider (742) is slidably connected in the shaking groove (7314), a shaking rod (743) is fixedly installed on the shaking slider (742) through the shaking groove (7314), a second reciprocating groove (7431) is opened on the shaking rod (743), a protrusion is installed near the edge of the shaking roller (741), and the second reciprocating groove (7431) is slidably connected to the protrusion on the shaking roller (741).

6. A vortex type multi-stage filtering device based on sewage treatment according to claim 5, characterized in that: The wall scraping mechanism (732) comprises a clamping block (7323), wherein the clamping block (7323) is fixedly mounted on the shaking slider (742), and the shaking slider (742) is fixedly mounted with wall scraping spring bars (7321) on both sides in horizontal opposite directions, and a wall scraping rubber strip (7322) is fixedly mounted on one end of the wall scraping spring bar (7321) close to the side wall of the conical container (3).

7. A vortex type multi-stage filtering device based on sewage treatment according to claim 6, characterized in that: The scraping rubber strip (7322) has a plurality of grooves arranged in the transverse direction along its upper edge.

8. A vortex multi-stage filtering device based on sewage treatment according to claim 6, characterized in that: The clamping block (7323) is mounted on the shaking slider (742) in a clamping manner, and the shaking slider (742) is provided with a clamping groove (7421). A spring receiving groove (7324) is provided in the middle of the clamping block (7323). The upper and lower ends of the spring receiving groove (7324) are slidably connected with a clamping rod (7325), and a clamping spring (7326) is fixedly connected between the two clamping rods (7325). A notch is provided on the shaking slider (742) corresponding to the clamping rod (7325), and the clamping rod (7325) is clamped into the notch.

9. A vortex type multi-stage filtering device based on sewage treatment according to claim 8, characterized in that: The scraping wall sliding groove (31) on the conical container (3) is provided with a closed groove (34) on both the upper and lower sides, and the scraping wall sliding block (731) is fixedly installed with a closed strip (35) on both the upper and lower sides, and the closed strip (35) is slidably connected in the closed groove (34).

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