A sewage treatment device with multi-stage filtration function for separating solid and liquid sewage

Abstract

The present invention provides a sewage treatment device with a multi-stage filtering function for separating solid and liquid sewage. The sewage treatment device with a multi-stage filtering function for separating solid and liquid sewage comprises: a sewage treatment tank body, a cleanable filtering mechanism, a wall scraping mechanism and a transfer box; the top of the sewage treatment tank body is an opening, and the sewage treatment tank body is provided with a first cover plate; the cleanable filtering mechanism is arranged in the sewage treatment tank body, and the cleanable filtering mechanism is used to clean the residues remaining on the rectangular filter net during the sewage filtering process; the wall scraping mechanism is arranged on the sewage treatment tank body, and the wall scraping mechanism is used to assist in cleaning the dirt remaining on the bottom inner wall of the sewage treatment tank body during the sewage treatment process. The sewage treatment device with a multi-stage filtering function for separating solid and liquid sewage provided by the present invention has the advantage of being able to discharge and collect impurities in real time during the filtering process, thereby improving work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment device with a multi-stage filtering function for separating solid and liquid sewage. Background Art

[0002] Sewage treatment is the process of purifying sewage so that it meets the water quality requirements for discharge into a water body or reuse. The standards for sewage treatment vary depending on the different reuses. Filtration is an important part of the huge sewage treatment process, and its main function is to filter out impurities in the water for better subsequent treatment.

[0003] However, since the sewage treatment equipment currently used cannot discharge and collect impurities in real time, it is often necessary for manual labor to periodically suspend mechanical treatment, which requires sewage treatment work to be suspended for a long time, reducing treatment efficiency.

[0004] Therefore, it is necessary to provide a new sewage treatment device with a multi-stage filtration function for separating solid and liquid in sewage to solve the above technical problems. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a sewage treatment device with a multi-stage filtering function for sewage solid and liquid separation, which can discharge and collect impurities in real time during filtering treatment and improve working efficiency.

[0006] In order to solve the above technical problems, the sewage treatment device provided by the present invention is provided with a multi-stage filtering function for separating solid and liquid sewage, which is used for multi-stage filtering of sewage, and comprises: a sewage treatment tank body, a cleanable filtering mechanism, a wall scraping mechanism and a transfer box; the top of the sewage treatment tank body is an opening, and the sewage treatment tank body is provided with a first cover plate; the cleanable filtering mechanism is arranged in the sewage treatment tank body, and the cleanable filtering mechanism is used to clean the residues remaining on the rectangular filter net during the sewage filtering process; the wall scraping mechanism is arranged on the sewage treatment tank body, and the wall scraping mechanism is used to assist in cleaning the dirt remaining on the bottom inner wall of the sewage treatment tank body during the sewage treatment process, so as to avoid the blockage caused by the solidification of the dirt in the later stage; the transfer box is fixedly connected to the bottom of the sewage treatment tank body, and the transfer box is tilted, and the transfer box is used to separate fixed debris from liquid sewage during sewage treatment, wherein the solid debris is transferred to the subsequent collection box, and the sewage after the secondary filtration is collected in the water distribution box.

[0007] As a further solution of the present invention, the cleanable filtering mechanism comprises a central rotating shaft, a plurality of rectangular filtering screens, a marking mechanism, a driving mechanism and a cleaning mechanism;

[0008] The central rotating shaft is rotatably arranged in the sewage treatment tank body; a plurality of rectangular filter screens distributed in a circular array are fixedly mounted on the central rotating shaft, and two adjacent rectangular filter screens form a filtering area; the plurality of rectangular filter screens are divided into four filtering areas, which are area a, area b, area c and area d, and the two rectangular filter screens in the same filtering area have the same filtering mesh number and are used to filter impurities of different sizes; the driving mechanism includes a first motor and a driving shaft; the first motor is arranged on one side of the sewage treatment tank body, and a motor seat is fixedly mounted on one side of the sewage treatment tank body, and the first motor is fixedly mounted on the motor seat; the driving shaft is rotatably installed through one side of the sewage treatment tank body and is fixedly connected to one end of the central rotating shaft; the output shaft of the first motor and the driving shaft are fixedly sleeved with a first bevel gear, and the two first bevel gears are meshed with each other. The cleaning mechanism includes an outer edge, a sealing plate, a plurality of linked curved rods, a plurality of cleaning strips and a connecting shaft; the outer edge extends outwardly and is arranged on a side of the sewage treatment tank body away from the corresponding first motor, and a circular opening is formed on the outer edge; the sealing plate is rotatably arranged in the circular opening formed by the outer edge; the plurality of linked curved rods are all slidably penetrated and arranged on the sealing plate, and the linked curved rods are distributed in a ring array; and extend to both sides of the plurality of rectangular filter screens respectively; the plurality of cleaning strips are respectively fixedly mounted on the plurality of linked curved rods, and two adjacent cleaning strips are slidably connected to the corresponding rectangular filter screens, and the cleaning strips are used to clean impurities generated on the surface of the rectangular filter screen due to filtering sewage; the connecting shaft is arranged on the outside of the sealing plate and is fixedly connected to the plurality of linked curved rods, and the connecting shaft is in contact with the sealing plate.

[0009] As a further solution of the present invention, the wall scraping mechanism includes a pulley 1 fixedly sleeved on the driving shaft, an embedded rotating shaft is rotatably installed in the sewage treatment tank body, one end of the embedded rotating shaft extends outside the sewage treatment tank body and is fixedly sleeved with a pulley 2, the pulley 2 is located directly below the pulley 1, a pulley 3 is arranged between the pulley 1 and the pulley 2, the pulley 3, the pulley 1 and the pulley 2 are arranged in a "triangle" position, and the same synchronous belt is arranged between the pulley 1, the pulley 2 and the pulley 3;

[0010] A "concave" type connecting strip is fixedly installed on one side of the sewage treatment tank body close to the pulley three, a first screw is rotatably installed on the "concave" type connecting strip, a circular driven shaft is threadedly sleeved on the first screw, and the pulley three is rotatably sleeved on the circular driven shaft;

[0011] The top inner wall and the bottom inner wall of the "concave" type connecting strip are both provided with a first slide groove, a first slider is slidably installed in the first slide groove, and the ends of the two first sliders close to each other are fixedly connected to the circular driven shaft, and the circular driven shaft is provided with a first threaded hole, and the first threaded hole is threadedly connected to the first screw rod;

[0012] The scraping mechanism also includes a first trapezoidal block fixedly mounted in the sewage treatment tank body, a first round rod is rotatably mounted on the first trapezoidal block, a second bevel gear is fixedly sleeved on the first round rod, a third bevel gear is fixedly mounted on one end of the embedded rotating shaft located in the sewage treatment tank body, and the third bevel gear is meshed with the second bevel gear;

[0013] A plurality of "fishbone" type crushing blades are fixedly mounted on the first round rod, and the "fishbone" type crushing blades are arranged to be tilted downwards, and are used to crush impurities after sewage filtration, and when impurities fall on the "fishbone" type crushing blades, they will continue to fall downwards under the action of the center of gravity;

[0014] A first mounting bar is fixedly mounted on one side of the first round rod, an "L"-shaped scraper is fixedly mounted on the first mounting bar, and the "L"-shaped scraper is connected to the inner wall of the sewage treatment tank.

[0015] As a further solution of the present invention, an electric guide rail is fixedly installed on the side of the sewage treatment tank body, and a second linkage bent rod is fixedly installed on the output block sliding on the electric guide rail, and the second linkage bent rod extends to the side of the sewage treatment tank body and the sealing plate and is rotatably connected to the connecting shaft;

[0016] A spline groove is provided on the inner side of the sealing plate, and a spline rod fixedly connected to the central rotating shaft is engaged in the spline groove.

[0017] As a further solution of the present invention, an annular guide groove is provided on the inner wall of the circular opening formed by the outer edge, and a positioning ring fixedly sleeved on the sealing plate is rotatably installed in the annular guide groove; a separation port and a debris discharge port are provided at the bottom of the conveying box, and the separation port and the debris discharge port are respectively arranged corresponding to the water distribution box and the debris collection box, and a fine separation net is installed in the separation port, and the fine separation net can be installed on the conveying box by screws.

[0018] As a further solution of the present invention, one side of the water distribution tank is fixedly connected to a drain pipe, a valve is provided on the drain pipe, and one side of the sundry collecting box is provided with a cleaning port.

[0019] As a further solution of the present invention, a bottom plate is provided at the bottom of the water distribution box and the sundry collection box, and a supporting leg is fixedly installed between the bottom plate and the transfer box.

[0020] As a further solution of the present invention, it also includes a water distribution tank, which is arranged at the bottom of the transfer box and is connected to the transfer box; a miscellaneous box, which is arranged at the bottom of the transfer box and is connected to the transfer box; a separation auger, which is rotatably installed in the water distribution tank; a second motor, which is fixedly installed on one side of the water distribution tank, and the output shaft of the second motor is fixedly connected to one end of the separation auger; and a cleanable filter mechanism, which is arranged on the sewage treatment tank.

[0021] As a further solution of the present invention, the identification mechanism includes four identification needles fixedly mounted on the central rotating shaft, the four identification needles are distributed in a circular array, an annular identification block is fixedly mounted on one side of the sewage treatment tank body close to the identification needles, the central rotating shaft is rotatably connected to the annular identification block, and each identification needle is aligned with each filtering area;

[0022] Among them, the two rectangular filter screens on area a have a filtration mesh of 20 meshes and are used for primary filtration to remove larger particles;

[0023] Among them, the two rectangular filter screens on area b have a filter mesh of 80 mesh, which are used for intermediate filtration to remove smaller particles;

[0024] Among them, the two rectangular filter screens on area c have a filtration mesh of 300 meshes, which can achieve water filtration and can be used for other filtration;

[0025] Among them, the two rectangular filter screens on area d have a filter mesh of 1000 mesh and are used for high-level filtration and for finely separating impurities in sewage.

[0026] Compared with the related art, the sewage treatment device provided by the present invention for separating solid and liquid sewage with a multi-stage filtration function has the following beneficial effects:

[0027] The present invention provides a sewage treatment device with a multi-stage filtering function for separating solid and liquid sewage:

[0028] 1. In the present invention, multiple rotatable rectangular filter screens in the sewage treatment tank realize primary filtration, and the fine separation screen in the transfer box realizes secondary filtration. The filtered impurities can be led out in real time by the separation auger and discharged into the collection box. The collection box can be cleaned in real time and maintenance can be done without stopping the machine;

[0029] 2. When the rectangular filter screen responsible for filtering is clogged, the first motor can be started to replace it. When the clogged rectangular filter screen rotates to the bottom, the impurities fall down and are then discharged through the separation auger. The cleaning strips that can rotate synchronously and slide horizontally can clean the impurities on the rectangular filter screen, making cleaning and maintenance convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0031] Figure 1 A schematic diagram of a front cross-sectional structure of a preferred embodiment of a sewage treatment device with a multi-stage filtering function for separating solid and liquid sewage provided by the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0033] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the D part;

[0034] Figure 4 for Figure 1 A schematic diagram of the enlarged structure of part E in the middle;

[0035] Figure 5 for Figure 1 A schematic diagram of the enlarged structure of part B;

[0036] Figure 6 for Figure 1 A schematic diagram of the enlarged structure of the middle C part;

[0037] Figure 7 It is a partial front view structural schematic diagram of the sewage treatment tank in the present invention;

[0038] Figure 8 It is a schematic diagram of the left side cross-sectional structure of the sewage treatment tank in the present invention;

[0039] Fig. 9 It is a partial right side structural schematic diagram of the sewage treatment tank in the present invention;

[0040] Fig.10 It is a structural schematic diagram of the sundry box in the present invention;

[0041] Fig.11 It is an assembly diagram of pulley 1, pulley 2 and pulley 3 in the present invention;

[0042] Fig.12 It is an assembly diagram of the marking needle, the annular marking block and the rectangular filter screen in the present invention.

[0043] In the figure: 1. sewage treatment tank; 101. annular identification block; 102. identification needle; 2. scraper mechanism; 201. pulley 1; 202. synchronous belt; 203. embedded rotating shaft; 204. pulley 2; 205. pulley 3; 206. "concave" type connecting strip; 207. first screw rod; 208. circular driven shaft; 2001. first trapezoidal block; 2002. first round rod; 2003. second bevel gear; 2004. third bevel gear; 2005. "L" type scraper; 3. conveyor box; 4. water distribution box; 5. collection box; 6. Separation auger; 7. Second motor; 8. Central shaft; 9. Rectangular filter; 10. First motor; 11. Drive shaft; 12. First bevel gear; 13. Outer edge; 14. Sealing plate; 15. Linkage bending rod 1; 16. Cleaning strip; 17. Connecting shaft; 18. Electric guide rail; 19. Linkage bending rod 2; 20. Spline groove; 21. Spline rod; 22. Annular guide groove; 23. Positioning ring; 24. Separation port; 25. Fine separation net; 26. Discharge port; 27. Drain pipe; 28. Cleaning port; 29. ​​Bottom plate; 30. Support leg. DETAILED DESCRIPTION

[0044] Please refer to Figure 1-Figure 12 ,in, Figure 1 A schematic diagram of a front cross-sectional structure of a preferred embodiment of a sewage treatment device with a multi-stage filtering function for separating solid and liquid sewage provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A; Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the D part; Figure 4 for Figure 1 A schematic diagram of the enlarged structure of part E in the middle; Figure 5 for Figure 1 A schematic diagram of the enlarged structure of part B; Figure 6 for Figure 1 A schematic diagram of the enlarged structure of the middle C part; Figure 7 It is a partial front view structural schematic diagram of the sewage treatment tank in the present invention; Figure 8 It is a schematic diagram of the left side cross-sectional structure of the sewage treatment tank in the present invention; Fig. 9 It is a partial right side structural schematic diagram of the sewage treatment tank in the present invention; Fig.10 It is a structural schematic diagram of the sundry box in the present invention; Fig.11 It is an assembly diagram of pulley 1, pulley 2 and pulley 3 in the present invention; Fig.12It is an assembly diagram of the marking needle, the annular marking block and the rectangular filter screen in the present invention. A sewage treatment device with a multi-stage filtering function for separating solid and liquid sewage is used for multi-stage filtering of sewage, and comprises: a sewage treatment tank body 1, a cleanable filtering mechanism, a wall scraping mechanism 2 and a transfer box 3; the top of the sewage treatment tank body 1 is open, and the sewage treatment tank body 1 is provided with a first cover plate; the cleanable filtering mechanism is arranged in the sewage treatment tank body 1, and the cleanable filtering mechanism is used to clean the residues remaining on the rectangular filter screen 9 during the sewage filtering process; the wall scraping mechanism 2 is arranged on the sewage treatment tank body 1, and the wall scraping mechanism 2 is used to assist in cleaning the dirt remaining on the bottom inner wall of the sewage treatment tank body 1 during the sewage treatment process, so as to avoid the blockage caused by the solidification of the dirt in the later stage; the transfer box 3 is fixedly connected to the bottom of the sewage treatment tank body 1, and the transfer box 3 is tilted, and the transfer box 3 is used to separate fixed debris from liquid sewage during sewage treatment, wherein the solid debris is transferred to the subsequent collection box 5, and the sewage after the secondary filtration is collected in the water distribution box 4;

[0045] In this embodiment, after the sewage enters the sewage treatment tank 1, it is discharged into the transfer box 3 through the scraper mechanism 2 for secondary filtration. The filtered sewage is separated from impurities by the rotating separation auger 6 and then discharged. The impurities are discharged into the collection box 5 in real time, which can realize maintenance without stopping the machine and improve work efficiency.

[0046] The cleanable filtering mechanism comprises a central rotating shaft 8, a plurality of rectangular filter screens 9, the marking mechanism, a driving mechanism and a cleaning mechanism; the central rotating shaft 8 is rotatably arranged in the sewage treatment tank 1; a plurality of rectangular filter screens 9 distributed in a ring array are fixedly mounted on the central rotating shaft 8, and two adjacent rectangular filter screens 9 form a filtering area; the plurality of rectangular filter screens 9 are divided into four filtering areas, which are area a, area b, area c and area d, and the two rectangular filter screens 9 in the same filtering area have the same filtering mesh number, and are used to filter impurities of different sizes;

[0047] In this embodiment, a plurality of rectangular filter screens 9 are installed on the central rotating shaft 8, and the angle between each two of them can filter impurities to achieve primary filtration. During use, they can be rotated as needed to adjust the filtration. The plurality of rectangular filter screens 9 are installed with screens of different filter mesh sizes to meet different needs during filtration.

[0048] The driving mechanism includes a first motor 10 and a driving shaft 11; the first motor 10 is arranged on one side of the sewage treatment tank body 1, and a motor seat is fixedly installed on one side of the sewage treatment tank body 1, and the first motor 10 is fixedly installed on the motor seat; the driving shaft 11 is rotatably installed on one side of the sewage treatment tank body 1, and is fixedly connected to one end of the central rotating shaft 8; the output shaft of the first motor 10 and the driving shaft 11 are both fixedly sleeved with a first bevel gear 12, and the two first bevel gears 12 are meshed with each other.

[0049] In this embodiment, the driving mechanism can drive the central rotating shaft 8 and the rectangular filter screen 9 to rotate, thereby realizing the rotation position of the filter area. At the same time, the first motor 10 can achieve self-locking, and can fix the central rotating shaft 8 and the rectangular filter screen 9. The operation is simple and stable.

[0050] The cleaning mechanism comprises an outer edge 13, a sealing plate 14, a plurality of linkage bent rods 15, a plurality of cleaning strips 16 and a connecting shaft 17; the outer edge 13 extends outwardly and is arranged on a side of the sewage treatment tank body 1 away from the corresponding first motor 10, and the outer edge 13 is formed with a circular opening; the sealing plate 14 is rotatably arranged in the circular opening formed by the outer edge 13;

[0051] The multiple linkage bent rods 15 are all slidably penetrated and arranged on the sealing plate 14, and the linkage bent rods 15 are distributed in a circular array; and respectively extend to both sides of the multiple rectangular filter screens 9; the multiple cleaning strips 16 are respectively fixedly installed on the multiple linkage bent rods 15, and two adjacent cleaning strips 16 are slidably connected to the corresponding rectangular filter screens 9, and the cleaning strips 16 are used to clean the impurities generated on the surface of the rectangular filter screen 9 due to filtering sewage; the connecting shaft 17 is arranged on the outer side of the sealing plate 14 and is fixedly connected to the multiple linkage bent rods 15, and the connecting shaft 17 is in contact with the sealing plate 14.

[0052] In this embodiment, the cleaning mechanism can scrape off impurities and clean up the residue on the rectangular filter screen 9 when it is deflected downward. The cleaning strip 16 can be provided with a knife surface to achieve the effect of cutting and scraping, avoiding the problem of impurities being difficult to fall off. A hard brush can also be provided to brush off the residue.

[0053] The scraping mechanism 2 includes a pulley 1 201 fixedly sleeved on the driving shaft 11, an embedded rotating shaft 203 is rotatably installed in the sewage treatment tank body 1, one end of the embedded rotating shaft 203 extends to the outside of the sewage treatment tank body 1 and is fixedly sleeved with a pulley 2 204, the pulley 2 204 is located directly below the pulley 1 201, a pulley 3 205 is provided between the pulley 1 201 and the pulley 2 204, the pulley 3 205, the pulley 1 201 and the pulley 2 204 are arranged in a "triangle" position, and the same synchronous belt 202 is provided between the pulley 1 201, the pulley 2 204 and the pulley 3 205;

[0054] A concave connecting strip 206 is fixedly installed on one side of the sewage treatment tank 1 close to the pulley 3 205, a first screw 207 is rotatably installed on the concave connecting strip 206, a circular driven shaft 208 is threadedly sleeved on the first screw 207, and the pulley 3 205 is rotatably sleeved on the circular driven shaft 208;

[0055] The top inner wall and the bottom inner wall of the "concave" type connecting strip 206 are both provided with a first slide groove, in which a first slider is slidably installed, and the ends of the two first sliders close to each other are fixedly connected to the circular driven shaft 208, and the circular driven shaft 208 is provided with a first threaded hole, and the first threaded hole is threadedly connected to the first screw rod 207;

[0056] The scraper mechanism 2 also includes a first trapezoidal block 2001 fixedly mounted in the sewage treatment tank body 1, a first round rod 2002 is rotatably mounted on the first trapezoidal block 2001, a second bevel gear 2003 is fixedly sleeved on the first round rod 2002, and a third bevel gear 2004 is fixedly mounted on one end of the embedded rotating shaft 203 located in the sewage treatment tank body 1, and the third bevel gear 2004 is meshed with the second bevel gear 2003;

[0057] During the rotation of the second pulley 204, the embedded rotating shaft 203 is driven to rotate, the embedded rotating shaft 203 drives the third bevel gear 2004 to rotate, the third bevel gear 2004 drives the second bevel gear 2003 to rotate, the second bevel gear 2003 drives the first round rod 2002 to rotate, the first round rod 2002 drives the "fishbone" type crushing blade to rotate, and then the filtered and separated debris is crushed, and the "L" type scraper 2005 rotates, and the dirt on the inner wall of the sewage treatment tank 1 is also cleaned;

[0058] A plurality of "fishbone" type crushing blades are fixedly mounted on the first round rod 2002. The "fishbone" type crushing blades are arranged to be tilted downwards and are used to crush impurities after sewage filtration. When impurities fall on the "fishbone" type crushing blades, they will continue to fall downwards under the action of the center of gravity.

[0059] A first mounting bar is fixedly mounted on one side of the first round rod 2002, and an "L"-shaped scraper 2005 is fixedly mounted on the first mounting bar, and the "L"-shaped scraper 2005 is connected to the inner wall of the sewage treatment tank 1;

[0060] During operation, if the rectangular filter screen 9 on the central rotating shaft 8 rotates simultaneously with the "fishbone" type crushing blade, the first screw 207 is directly rotated. Under the joint action of the thread, the first slider and the first slide groove, the first screw 207 drives the circular driven shaft 208 to move, and the circular driven shaft 208 drives the pulley three 205 to move. At this time, the pulley three 205 will tighten the synchronous belt 202. At this time, the synchronous belt 202 will be in a taut state, and then in the process of the central rotating shaft 8 rotating, the "fishbone" type crushing blade will also rotate;

[0061] On the contrary, if the first screw rod 207 is directly rotated in the reverse direction, the synchronous belt 202 will become loose, and will only be mounted on the pulley 1 201 and the pulley 2 204, and no synchronous rotation will occur, and then only filtering and separation need to be performed first.

[0062] An electric guide rail 18 is fixedly installed on the side of the sewage treatment tank body 1, and a linkage bent rod 2 19 is fixedly installed on the sliding output block on the electric guide rail 18. The linkage bent rod 2 19 extends to the sides of the sewage treatment tank body 1 and the sealing plate 14 and is rotatably connected to the connecting shaft 17.

[0063] In this embodiment, the electric guide rail 18 can drive the linkage bent rod 2 19 to move, and the linkage bent rod 2 19 can drive the connecting shaft 17 connected to the bearing to slide, thereby pulling the linkage bent rod 1 15 to realize the left and right scraping movement of the cleaning strip 16. The relatively rotatable linkage bent rod 2 19 and the connecting shaft 17 can meet the needs of the angle adjustment of the rectangular filter screen 9, thereby realizing the synchronous movement of the rectangular filter screen 9 and the cleaning strip 16.

[0064] A spline groove 20 is formed on the inner side of the sealing plate 14 , and a spline rod 21 fixedly connected to the central shaft 8 is meshed in the spline groove 20 .

[0065] In this embodiment, the cooperation between the spline groove 20 and the spline rod 21 can realize the synchronous rotation of the central shaft 8 and the sealing plate 14, and realize the need for the linkage bending rod 15 and the cleaning strip plate 16 to follow the rotation of the rectangular filter screen 9, and when the sealing plate 14 moves to the right, the spline groove 20 and the spline rod 21 can also be separated.

[0066] An annular guide groove 22 is formed on the inner wall of the circular opening formed by the outer edge 13 , and a positioning ring 23 fixedly sleeved on the sealing plate 14 is rotatably installed in the annular guide groove 22 .

[0067] The annular guide groove 22 and the positioning ring 23 can achieve the needs of guiding and sealing when the sealing plate 14 rotates, thereby ensuring the stability of the sealing plate 14 .

[0068] A separation port 24 and a debris discharge port 26 are provided at the bottom of the transfer box 3, and the separation port 24 and the debris discharge port 26 are respectively arranged corresponding to the water distribution box 4 and the debris collection box 5. A fine separation net 25 is installed in the separation port 24, and the fine separation net 25 can be installed on the transfer box 3 by screws.

[0069] In this embodiment, the fine separation net 25 in the separation port 24 finely filters the sewage, and then the sewage is discharged into the water separation tank 4 through the separation port 24, and the impurities are discharged into the impurity collection box 5 through the impurity discharge port 26 to achieve separation.

[0070] In the present invention, one side of the water distribution box 4 is fixedly connected with a drain pipe 27 , and a valve is provided on the drain pipe 27 . A cleaning port 28 is opened on one side of the sundry collecting box 5 .

[0071] In this embodiment, the drain pipe 27 can discharge the sewage from the water distribution box 4, waiting for subsequent more detailed treatment, and the cleaning port 28 can promptly clean the impurities in the collection box 5 to achieve non-stop treatment.

[0072] In the present invention, a bottom plate 29 is provided at the bottom of the water distribution box 4 and the sundry collection box 5 , and a supporting leg 30 is fixedly installed between the bottom plate 29 and the transfer box 3 .

[0073] In this embodiment, the support legs 30 and the bottom plate 29 ensure the stability of placement.

[0074] A water distribution tank 4, which is arranged at the bottom of the conveying box 3 and is connected to the conveying box 3; a sundry box 5, which is arranged at the bottom of the conveying box 3 and is connected to the conveying box 3; a separation auger 6, which is rotatably installed in the water distribution tank 4; a second motor 7, which is fixedly installed on one side of the water distribution tank 4, and the output shaft of the second motor 7 is fixedly connected to one end of the separation auger 6; a cleanable filtering mechanism, which is arranged on the sewage treatment tank body 1.

[0075] The identification mechanism includes four identification needles 102 fixedly mounted on the central rotating shaft 8, and the four identification needles 102 are distributed in a circular array. A circular identification block 101 is fixedly mounted on one side of the sewage treatment tank body 1 close to the identification needles 102. The central rotating shaft 8 is rotatably connected to the circular identification block 101, and each identification needle 102 is aligned with each filtering area;

[0076] Among them, the two rectangular filter screens 9 on area a have a filtration mesh of 20 meshes and are used for primary filtration to remove larger particles;

[0077] Among them, the two rectangular filter screens 9 on area b have a filtration mesh of 80 meshes, which are used for intermediate filtration to remove smaller particles;

[0078] Among them, the two rectangular filter screens 9 on area c have a filtration mesh of 300 meshes, which can achieve water filtration and can be used for other filtration;

[0079] The two rectangular filter screens 9 on area d have a filter mesh of 1000 meshes and are used for high-level filtration and fine separation of impurities in sewage.

[0080] It is worth noting that the circuits, electronic components and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0081] When the present invention is in use, during sewage filtering, the sewage is inserted into the opening on the top of the sewage treatment tank body 1 corresponding to the pipeline, and then the first motor 10 is started. The output shaft of the first motor 10 drives the driving shaft 11 and the central rotating shaft 8 to rotate through the first bevel gear 12. When the central rotating shaft 8 rotates, the position of the rectangular filter screen 9 is adjusted. Under the action of the marking mechanism, the angle between the two corresponding rectangular filter screens 9 is finally made to correspond to the sewage pipe, and the first motor 10 can be turned off, and the locking of the central rotating shaft 8 is completed by the self-locking of the first motor 10;

[0082] After the sewage enters the sewage treatment tank 1, it passes through the angle between two adjacent rectangular filter screens 9 and is filtered by the rectangular filter screens 9. The filtered sewage falls into the transfer box 3 through the scraper mechanism 2, and then falls into the water separation tank 4 after being filtered through the fine separation screen 25 in the separation port 24, and finally is discharged through the drain pipe 27.

[0083] When the sewage falls into the transfer box 3, the second motor 7 is started, and the output shaft of the second motor 7 drives the separation auger 6 to rotate. When the separation auger 6 rotates, it can push the impurities filtered by the fine separation net 25 to the impurity discharge port 26. The impurities at the impurity discharge port 26 fall into the impurity collection box 5, and people can clean the impurities through the cleaning port 28 at the same time;

[0084] When the central rotating shaft 8 drives the rectangular filter screen 9 to rotate, the rectangular filter screen 9 pushes the linkage curved rod 15 and the cleaning strip 16 to rotate synchronously, the linkage curved rod 15 synchronously drives the sealing plate 14 to rotate along the outer edge 13, the positioning ring 23 rotates along the annular guide groove 22, the linkage curved rod 15 drives the connecting shaft 17 to rotate, and the connecting shaft 17 rotates along the linkage curved rod 2 19, and they are all paused when paused;

[0085] In use, when the rectangular filter screen 9 responsible for filtering is clogged, the first motor 10 can be started to replace it. When the clogged rectangular filter screen 9 rotates downward, the impurities fall down and are then discharged through the separation auger 6;

[0086] When impurities that are difficult to clean appear on the rectangular filter screen 9, start the electric guide rail 18, so that the output block of the electric guide rail 18 drives the linkage bent rod 2 19 to slide, the linkage bent rod 2 19 drives the connecting shaft 17 and multiple linkage bent rods 1 15 to slide, and the linkage bent rod 1 15 drives the cleaning strip 16 to slide and clean the rectangular filter screen 9, which is convenient for recycling.

[0087] Compared with the related art, the sewage treatment device provided by the present invention for separating solid and liquid sewage with a multi-stage filtration function has the following beneficial effects:

[0088] The present invention provides a sewage treatment device with a multi-stage filtering function for separating solid and liquid in sewage. In the present invention, a plurality of rotatable rectangular filter screens 9 in a sewage treatment tank body 1 realize primary filtration, and a fine separation screen 25 in a transfer box 3 realizes secondary filtration. Impurities after filtration can be led out in real time by a separation auger 6 and discharged into a collection box 5. The collection box 5 can be cleaned in real time and can be maintained without stopping the machine. When the rectangular filter screen 9 responsible for filtration is blocked, the first motor 10 can be started for replacement. When the blocked rectangular filter screen 9 rotates to the bottom, the impurities fall and are then discharged through the separation auger 6. The cleaning strips 16 that can rotate synchronously and slide horizontally can clean the impurities on the rectangular filter screen 9, and the cleaning and maintenance are convenient.

[0089] It should be noted that the device structure and the drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above invention, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field.

[0090] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0091] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments or applied directly or indirectly without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A sewage treatment device with a multi-stage filtration function for separating solid and liquid sewage, which is used for multi-stage filtration of sewage, characterized in that: include: The sewage treatment tank, cleanable filter mechanism, scraper mechanism and transfer box; The top of the sewage treatment tank body is open, and a first cover plate is provided on the sewage treatment tank body; The cleanable filter mechanism is arranged in the sewage treatment tank body, and is used to clean the residues remaining on the rectangular filter net during the sewage filtering process; The wall scraping mechanism is arranged on the sewage treatment tank body, and is used to assist in cleaning the dirt remaining on the bottom inner wall of the sewage treatment tank body during the sewage treatment process, so as to avoid blockage caused by the solidification of dirt in the later stage; The transfer box is fixedly connected to the bottom of the sewage treatment tank and is arranged at an angle. The transfer box is used to separate fixed debris from liquid sewage during sewage treatment, wherein the solid debris is transferred to a subsequent collection box, and the sewage after secondary filtration is collected in a water distribution tank.

2. The sewage treatment device with multi-stage filtration function for separating solid and liquid waste according to claim 1, characterized in that: The cleanable filter mechanism comprises a central rotating shaft, a plurality of rectangular filter screens, a marking mechanism, a driving mechanism and a cleaning mechanism; The central rotating shaft is rotatably disposed in the sewage treatment tank; A plurality of rectangular filter screens distributed in a circular array are fixedly mounted on the central rotating shaft, and two adjacent rectangular filter screens form a filter area; A plurality of rectangular filter screens are divided into four filter areas, the four filter areas are area a, area b, area c and area d, and the two rectangular filter screens in the same filter area have the same filter mesh number and are used to filter impurities of different sizes; The driving mechanism comprises a first motor and a driving shaft; The first motor is arranged on one side of the sewage treatment tank body, a motor seat is fixedly mounted on one side of the sewage treatment tank body, and the first motor is fixedly mounted on the motor seat; The drive shaft is rotatably installed through one side of the sewage treatment tank and is fixedly connected to one end of the central rotating shaft; The output shaft of the first motor and the driving shaft are both fixedly sleeved with first bevel gears, and the two first bevel gears are meshed with each other. The cleaning mechanism comprises an outer edge, a sealing plate, a plurality of linkage curved rods, a plurality of cleaning strips and a connecting shaft; The outer edge extends outwardly and is arranged on a side of the sewage treatment tank body away from the corresponding first motor, and the outer edge is formed with a circular opening; The sealing plate is rotatably disposed in the circular opening formed on the outer edge; The plurality of linkage bent rods 1 are all slidably disposed on the sealing plate, and the linkage bent rods 1 are distributed in a ring array; and extend to both sides of the plurality of rectangular filter screens respectively; The plurality of cleaning strips are respectively fixedly mounted on the plurality of linkage curved rods, and two adjacent cleaning strips are slidably connected to the corresponding rectangular filter screens, and the cleaning strips are used to clean the impurities generated on the surface of the rectangular filter screen due to filtering sewage; The connecting shaft is arranged at the outer side of the sealing plate and is fixedly connected to each of the plurality of linkage bending rods, and the connecting shaft is in contact with the sealing plate.

3. The sewage treatment device with multi-stage filtration function for separating solid and liquid sewage according to claim 2 is characterized in that: The scraping mechanism includes a pulley 1 fixedly sleeved on the driving shaft, an embedded rotating shaft is rotatably installed in the sewage treatment tank body, one end of the embedded rotating shaft extends outside the sewage treatment tank body and is fixedly sleeved with a pulley 2, the pulley 2 is located directly below the pulley 1, a pulley 3 is arranged between the pulley 1 and the pulley 2, the pulley 3, the pulley 1 and the pulley 2 are arranged in a "triangle" position, and the same synchronous belt is arranged between the pulley 1, the pulley 2 and the pulley 3; A "concave" type connecting strip is fixedly installed on one side of the sewage treatment tank body close to the pulley three, a first screw is rotatably installed on the "concave" type connecting strip, a circular driven shaft is threadedly sleeved on the first screw, and the pulley three is rotatably sleeved on the circular driven shaft; The top inner wall and the bottom inner wall of the "concave" type connecting strip are both provided with a first slide groove, a first slider is slidably installed in the first slide groove, and the ends of the two first sliders close to each other are fixedly connected to the circular driven shaft, and the circular driven shaft is provided with a first threaded hole, and the first threaded hole is threadedly connected to the first screw rod; The scraping mechanism also includes a first trapezoidal block fixedly mounted in the sewage treatment tank body, a first round rod is rotatably mounted on the first trapezoidal block, a second bevel gear is fixedly sleeved on the first round rod, a third bevel gear is fixedly mounted on one end of the embedded rotating shaft located in the sewage treatment tank body, and the third bevel gear is meshed with the second bevel gear; A plurality of "fishbone" type crushing blades are fixedly mounted on the first round rod, and the "fishbone" type crushing blades are arranged to be tilted downwards, and are used to crush impurities after sewage filtration, and when impurities fall on the "fishbone" type crushing blades, they will continue to fall downwards under the action of the center of gravity; A first mounting bar is fixedly mounted on one side of the first round rod, an "L"-shaped scraper is fixedly mounted on the first mounting bar, and the "L"-shaped scraper is connected to the inner wall of the sewage treatment tank.

4. The sewage treatment device with multi-stage filtration function for separating solid and liquid waste according to claim 3, characterized in that: An electric guide rail is fixedly installed on the side of the sewage treatment tank body, and a second linkage bent rod is fixedly installed on the output block sliding on the electric guide rail. The second linkage bent rod extends to the side of the sewage treatment tank body and the sealing plate and is rotatably connected to the connecting shaft; A spline groove is provided on the inner side of the sealing plate, and a spline rod fixedly connected to the central rotating shaft is engaged in the spline groove.

5. The sewage treatment device with multi-stage filtration function for separating solid and liquid from sewage according to claim 4, characterized in that: An annular guide groove is provided on the inner wall of the circular opening formed by the outer edge, and a positioning ring fixedly sleeved on the sealing plate is rotatably installed in the annular guide groove; A separation port and a debris discharge port are provided at the bottom of the transfer box, and the separation port and the debris discharge port are respectively arranged corresponding to the water distribution box and the debris collection box. A fine separation net is installed in the separation port, and the fine separation net can be installed on the transfer box by screws.

6. The sewage treatment device with multi-stage filtration function for separating solid and liquid waste according to claim 4, characterized in that: One side of the water distribution box is fixedly connected with a drainage pipe, on which a valve is arranged, and one side of the sundry collecting box is provided with a cleaning port.

7. The sewage treatment device with multi-stage filtration function for separating solid and liquid waste according to claim 4, characterized in that: A bottom plate is provided at the bottom of the water distribution box and the sundry collection box, and a supporting leg is fixedly installed between the bottom plate and the transfer box.

8. The sewage treatment device with multi-stage filtration function for solid and liquid separation of sewage according to claim 1, characterized in that: It also includes a water distribution box, which is arranged at the bottom of the transfer box and is connected to the transfer box; A miscellaneous box, which is arranged at the bottom of the conveying box and is in conduction with the conveying box; A separation auger, the separation auger being rotatably mounted in the water separation tank; A second motor, wherein the second motor is fixedly mounted on one side of the water distribution tank, and an output shaft of the second motor is fixedly connected to one end of the separation auger; and a cleanable filtering mechanism, wherein the cleanable filtering mechanism is arranged on the sewage treatment tank body.

9. The sewage treatment device with multi-stage filtration function for separating solid and liquid waste according to claim 2, characterized in that: The identification mechanism includes four identification needles fixedly mounted on the central rotating shaft, the four identification needles are distributed in a circular array, an annular identification block is fixedly mounted on one side of the sewage treatment tank body close to the identification needles, the central rotating shaft is rotatably connected to the annular identification block, and each identification needle is aligned with each filtering area; Among them, the two rectangular filter screens on area a have a filtration mesh of 20 meshes and are used for primary filtration to remove larger particles; Among them, the two rectangular filter screens on area b have a filtration mesh of 80 mesh, which are used for intermediate filtration to remove smaller particles; Among them, the two rectangular filter screens on area c have a filtration mesh of 300 meshes, which can achieve water filtration and can be used for other filtration; Among them, the two rectangular filter screens on area d have a filter mesh of 1000 mesh and are used for high-level filtration and for finely separating impurities in sewage.

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