Wastewater discharge pretreatment equipment

Abstract

The invention belongs to the field of wastewater pollution pretreatment, and particularly relates to wastewater discharge pretreatment equipment which comprises a filter tank and a grit chamber, the filter tank comprises a first box body, and a feed port is formed in one side of the first box body; a steel plate is arranged on the inner wall of the first box body in a penetrating mode, and the steel plate located in the first box body is obliquely arranged. A grating area is arranged on the surface of the inclined steel plate; a first motor and a rotating shaft are sequentially arranged at the top of the steel plate; the first motor and the steel plate are fixedly connected, and the two sides of the rotating shaft are rotationally connected to the top of the steel plate through plates. A belt sleeves between the output end of the first motor and the end part of the rotating shaft; and through the cooperation effect of the rotating shaft and the steel wire rope, the position of the first scraping plate can be adjusted by controlling winding and unwinding of the steel wire rope, then impurities on the surface of the grating area can be shoveled away, and the convenience of the device for cleaning the grating area is improved.

Description

Technical Field

[0001] The invention relates to the field of wastewater pollution pretreatment, in particular to wastewater discharge pretreatment equipment. Background Art

[0002] Wastewater treatment generally utilizes the life activities of microorganisms to degrade organic pollutants in dissolved or colloidal states in wastewater, thereby purifying the wastewater. Specifically, there are aerobic treatments that utilize aerobic microorganisms to efficiently biodegrade and transform organic pollutants in wastewater under an aerobic environment, and anaerobic treatments that utilize facultative anaerobic bacteria and obligate anaerobic bacteria to degrade organic pollutants under anaerobic conditions.

[0003] Wastewater contains suspended matter, particulate impurities and other harmful substances. If these impurities are discharged directly into the biological pool without treatment, they will inhibit the metabolic activity of microorganisms, thereby reducing their activity and causing pollution to the biological pool.

[0004] In the prior art, the method for pre-treating suspended solids in wastewater is generally to filter them through grid steel plates. During use and observation, it was found that because the grid plates are generally located inside the pool body, the environment is relatively harsh, and manual cleaning thereof is quite inconvenient.

[0005] Therefore, in response to the above problems, a wastewater discharge pre-treatment device is proposed. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a wastewater discharge pre-treatment device described in the present invention includes a filter tank and a sand settling tank, the filter tank includes a first box body, a feed port is opened on one side of the first box body; a steel plate is provided through the inner wall of the first box body, and the steel plate located inside the first box body is inclined; a grid area is provided on the surface of the inclined steel plate; a first motor and a rotating shaft are provided on the top of the steel plate in sequence; the first motor and the steel plate are fixedly connected, and both sides of the rotating shaft are rotatably connected and installed to the top of the steel plate through a plate; the output end of the first motor and the end of the rotating shaft are connected The sleeve is provided with a belt; the surface of the rotating shaft is symmetrically fixed with a steel wire rope, and the end of the steel wire rope is fixed with a first scraper; the end face of the first scraper is inclined; the two sides of the steel plate are symmetrically fixed with guide rails; the two sides of the first scraper are rotatably connected with a pair of wheels, and the wheels and guide rails are slidingly matched; the bottom of the steel plate is provided with a waste discharge component; the grit chamber is used to remove sand and gravel and other granular impurities from the wastewater; through the cooperation of the rotating shaft and the steel wire rope, the position of the first scraper can be adjusted by controlling the winding and unwinding of the steel wire rope, and then the impurities on the surface of the grille area can be removed, thereby improving the convenience of the device in cleaning the grille area.

[0008] Preferably, the waste discharge assembly includes a bottom trough that is connected to the bottom of the inner wall of the first box; a second motor is fixedly connected to one side of the bottom trough; an auger is fixedly connected to the output end of the second motor; the auger and the bottom trough are arranged through and are rotatably connected; through the cooperation of the second motor and the auger, impurities in the bottom trough can be discharged under the spiral conveying action of the auger, further improving the convenience of the device in removing impurities on the grille area.

[0009] Preferably, a plurality of baffles are fixed to the bottom of the first scraper; the baffles are arranged in a wave shape; profile plates are symmetrically fixed to both sides of the baffle, and the profile plates are arranged at an angle; by arranging the baffles and profile plates, when the first scraper removes impurities on the surface of the grid area, the impurities will stay at the bottom of the first scraper under the guidance of the inclined surface. At this time, due to the lateral guidance of the baffles, the impurities can diffuse and accumulate to both sides along the baffles. At the same time, the profile plates can also cooperate with and expand the guiding effect of the baffles, thereby improving the uniformity of the impurity distribution at the bottom of the first scraper, thereby reducing the local accumulation of impurities in the bottom trough and alleviating the workload of the auger.

[0010] Preferably, a connecting rod is fixed between a pair of parallel wheels, and the connecting rod and the first scraper are set through; a plurality of rubber rods are fixed to the outer wall of the connecting rod, and the rubber rods between the pair of connecting rods are staggered; a tuning fork is symmetrically fixed to the inner wall of the first scraper, and the tuning fork and the rubber rod are correspondingly set; when the first scraper slides along the steel plate, the wheel will rotate under the friction between the wheel and the guide rail, thereby driving the connecting rod to rotate, and when the connecting rod rotates, it will drive the rubber rod to rotate together, and the rotating rubber rod will repeatedly hit the tuning fork on one side, so that the tuning fork will continuously generate vibration and transmit it to the surface of the first scraper, so as to accelerate the redistribution of impurities at the bottom of the first scraper and improve the uniformity of impurities at the bottom of the first scraper. At the same time, since the rubber rods on the pair of connecting rods are staggered, the mechanical energy transmitted to the connecting rod by the wheel can be effectively utilized and converted into the vibration of the tuning fork.

[0011] Preferably, a second scraper is symmetrically fixed on both sides of the first scraper, and the second scraper is arranged in an arc shape; the second scraper and the guide rail are both slidably matched; the runner is located between a pair of second scrapers; by setting the second scraper, when the first scraper slides down or rises along the steel plate, the second scraper can remove a small amount of impurities attached to the guide rail, so as to reduce the entanglement and pollution of these impurities on the runner, thereby ensuring the stable operation of the runner.

[0012] Preferably, a main pipe is provided on one side of the first box body; a plurality of branch pipes are connected to the middle of the main pipe, and the branch pipes and the first box body are arranged to penetrate; the steel plate is located between the first scraper and the branch pipe; a plurality of nozzles are connected to the surface of the branch pipe; when the grid area filters the water body, the main pipe can be connected to the compressed air supply equipment, and the pulse valve and the control module are coordinated to realize the intermittent ejection of the airflow from the nozzle through the branch pipe to pulse-clear the holes on the inner wall of the grid area. The specific structure of the above-mentioned pulse valve and control module can be similar to the pulse blowing structure of the bag-type dust collector, which is also a mature existing technology, so it will not be repeated here. The impurities accumulated in the grid area can be flushed out by the action of the airflow pulse to ensure the stable filtering function of the grid area on the water body.

[0013] Preferably, the end of the nozzle is fixedly connected to a cylinder; a plurality of baffles are fixedly connected to the inner wall of the cylinder, and the baffles are staggered; by arranging the cylinder and the baffles, when there is no airflow in the branch pipe, the maze structure formed by the baffles will block the particulate impurities entering the cylinder, and when the airflow is ejected through the branch pipe and the nozzle, the small amount of particulate impurities remaining in the baffle will be discharged under the action of the air rush, so as to reduce the particulate impurities entering the branch pipe and reduce the possibility of blockage of the nozzle.

[0014] Preferably, the grit chamber comprises a second box body; a slope is provided at the bottom of the inner wall of the second box body; a plurality of columns are symmetrically fixed to the inner wall of the slope; a plurality of baffles are symmetrically fixed to the inner wall of the second box body, and the baffles are inclined; the columns are located between adjacent baffles; a sand discharge assembly is provided at the bottom of the slope; the filtered water is pumped from the first box body to the interior of the second box body, and then the water body can flow down the slope. During the flow of the water body, it will pass through the cavity formed between the baffles. Since the cavity is set in the opposite direction to the water flow, the water body will be subject to additional obstruction when flowing, and turbulence will be formed in the cavity to dissipate energy of the water body, slow down the water flow velocity in the second box body, and promote the sedimentation of sand and gravel particles in the water body. The settled particles will slide to the bottom under the action of the slope and be discharged through the sand discharge assembly.

[0015] Preferably, one side of the second box body is rotatably connected to a plurality of vertical poles; a sphere is fixedly connected to the bottom of the vertical pole; by arranging the sphere, after the water is discharged from one side of the second box body, it will collide with the sphere and cause the sphere to rotate a certain angle with the vertical pole, so as to convert the kinetic energy of the water body into the potential energy of the sphere, thereby further realizing the energy dissipation of the water body in the second box body.

[0016] Preferably, the sand discharge assembly includes a cylinder; the cylinder and the outer wall of the second box body are fixedly connected; the output end of the cylinder is fixedly connected to a third scraper; one side of the third scraper is fixedly connected to a cross bar; the end of the cross bar is fixedly connected to a fixed plate; the fixed plate is located inside the second box body and is corresponding to the shape of the inner wall of the slope; the staff can regularly start the cylinder to discharge sand from the second box body. After the cylinder is started, the third scraper, cross bar and fixed plate will be driven to move together. During the movement of the third scraper, the sand and gravel at the bottom of the slope will be scraped, and the fixed plate will open the second box body and discharge the sand and gravel from the original fixed plate into the collection box. It is worth mentioning that when discharging sand from the slope, it should be ensured that the pipeline valve between the sand settling tank and the filter tank is in a closed state. In addition, the small amount of sand and gravel remaining on the slope can be cleaned manually regularly.

[0017] The present invention is beneficial in that: 1. The wastewater discharge pre-treatment equipment described in the present invention can adjust the position of the first scraper by controlling the winding and unwinding of the wire rope through the cooperation of the rotating shaft and the wire rope, thereby removing impurities on the surface of the grid area and improving the convenience of the device in cleaning the grid area.

[0018] 2. The wastewater discharge pre-treatment equipment described in the present invention, through the cooperation of the second motor and the auger, can discharge impurities in the bottom trough under the spiral conveying action of the auger, further improving the convenience of the device in removing impurities on the grid area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the main body of the present invention; Figure 2 This is a schematic structural diagram of the first box in the present invention; Figure 3 Schematic diagram of the structure of the guide rail in the present invention; Figure 4 Schematic diagram of the structure of the first scraper in the present invention; Figure 5 Schematic diagram of the structure of the connecting rod in the present invention; Figure 6 It is a structural schematic diagram of the cylinder in the present invention; Figure 7 This is a schematic structural diagram of the second box in the present invention; Figure 8Schematic diagram of the structure of the baffle in the present invention; Figure 9 It is a structural schematic diagram of the third scraper in the present invention.

[0021] In the figure: 1. first box; 12. steel plate; 13. grille area; 14. first motor; 15. rotating shaft; 16. steel wire rope; 17. first scraper; 18. guide rail; 19. rotor; 2. bottom trough; 22. second motor; 23. auger; 3. baffle; 32. profile plate; 4. connecting rod; 42. rubber rod; 43. tuning fork; 5. second scraper; 6. main pipe; 62. branch pipe; 63. nozzle; 7. cylinder; 72. baffle; 8. second box; 82. spoiler; 83. slope; 84. column; 9. vertical pole; 92. ball; 10. cylinder; 1001. third scraper; 1002. cross bar; 1003. fixing plate. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Specific examples are given below.

[0024] See also Figures 1 to 9 As shown, a wastewater discharge pretreatment device according to an embodiment of the present invention includes a filter tank and a grit chamber, wherein the filter tank includes a first box body 1, and a feed port is provided on one side of the first box body 1; a steel plate 12 is provided through the inner wall of the first box body 1, and the steel plate 12 located inside the first box body 1 is inclined; a grid area 13 is provided on the surface of the inclined steel plate 12; a first motor 14 and a rotating shaft 15 are provided on the top of the steel plate 12 in sequence; the first motor 14 and the steel plate 12 are fixedly connected, and the two sides of the rotating shaft 15 are rotated by plates It is connected and installed to the top of the steel plate 12; a belt is provided between the output end of the first motor 14 and the end of the rotating shaft 15; a steel wire rope 16 is symmetrically fixed to the surface of the rotating shaft 15, and a first scraper 17 is fixed to the end of the steel wire rope 16; the end face of the first scraper 17 is set at an angle; guide rails 18 are symmetrically fixed to both sides of the steel plate 12; a pair of runners 19 are rotatably connected to both sides of the first scraper 17, and the runners 19 and guide rails 18 are in sliding fit; a waste discharge assembly is provided at the bottom of the steel plate 12; the grit chamber is used to remove sand and gravel and other particulate impurities from wastewater; During operation, wastewater can be injected into the interior of the first box body 1 from the feed port on one side of the first box body 1 by pumping. The wastewater will pass through the inclined steel plate 12 in the first box body 1, and the garbage and other suspended matter in the water body will be intercepted by the grid area 13 on its surface. The filtered water body can also be transported to the grit chamber by pumping to remove the particulate impurities in the water body. Finally, the pretreated water body can be pumped from the grit chamber to the biological reactor for reaction treatment. The pump body, pipeline and valve involved in the above work are mature existing technologies, so the specific structure and principle are not repeated here. When the surface of the grid area 13 filters the water body, impurities will be attached to the surface. At this time, the first motor 14 can be periodically turned on. After the first motor 14 is turned on, it will drive the rotating shaft 15 through the belt, so that the rotating shaft 15 rotates and the first scraper 17 is vertically controlled by the winding wire rope 16. The first scraper 17 will be under the action of the released wire rope 16 and its own gravity on the guide rail 18 and the impeller. The guiding effect of 19 slides down along the steel plate 12, and the inclined end surface of the bottom of the first scraper 17 can remove impurities attached to the surface of the grille area 13. The removed impurities can be pushed into the waste discharge component by the first scraper 17 and transported to the collection tank through the waste discharge component for centralized treatment. It is worth mentioning that the first scraper 17 will be above the water level when it is not working. At the same time, the scraping action of the first scraper 17 each time it cleans can be repeated many times to evenly remove impurities on the surface of the grille area 13. In addition, the water-facing surface of the first scraper 17 is also inclined, so it is difficult for impurities to adhere during cleaning, and the small amount of impurities accumulated on the top of the first scraper 17 during the cleaning process can be removed by regular manual cleaning; through the cooperation of the rotating shaft 15 and the wire rope 16, the position of the first scraper 17 can be adjusted by controlling the winding of the wire rope 16, thereby removing impurities on the surface of the grille area 13, thereby improving the convenience of the device in cleaning the grille area 13.

[0025] See also Figure 1 and Figure 2 As shown, the waste discharge assembly includes a bottom trough 2 connected to the bottom of the inner wall of the first box body 1; a second motor 22 is fixedly connected to one side of the bottom trough 2; an auger 23 is fixedly connected to the output end of the second motor 22; the auger 23 and the bottom trough 2 are arranged to penetrate and are rotatably connected; Through the cooperation of the second motor 22 and the auger 23, when the first motor 14 is started to clean the surface of the grille area 13, the second motor 22 can be started in coordination to drive the auger 23 to rotate. The auger 23 can spirally convey the impurities pushed to the inside of the bottom trough 2 by the first scraper 17. These impurities will be transported to the collection trough through the bottom trough 2 for centralized treatment; through the cooperation of the second motor 22 and the auger 23, the impurities in the bottom trough 2 can be discharged under the spiral conveying action of the auger 23, further improving the convenience of the device in removing impurities on the grille area 13.

[0026] See also Figure 4 As shown, a plurality of baffles 3 are fixedly connected to the bottom of the first scraper 17; the baffles 3 are arranged in a wave shape; and the two sides of the baffles 3 are symmetrically fixed with profile plates 32, and the profile plates 32 are arranged in an inclined manner; By arranging the deflector 3 and the profile plate 32, when the first scraper 17 removes impurities on the surface of the grid area 13, the impurities will stay at the bottom of the first scraper 17 under the guidance of the inclined surface. At this time, due to the lateral guidance of the deflector 3, the impurities can diffuse and accumulate to both sides along the deflector 3. At the same time, the profile plate 32 can also cooperate with and expand the guiding effect of the deflector 3, thereby improving the uniformity of the impurity distribution at the bottom of the first scraper 17, thereby reducing the local accumulation of impurities in the bottom trough 2 and reducing the workload of the auger 23.

[0027] See also Figure 5 As shown, a connecting rod 4 is fixedly connected between a pair of parallel rotating wheels 19, and the connecting rod 4 and the first scraper 17 are arranged to penetrate each other; a plurality of rubber rods 42 are fixedly connected to the outer wall of the connecting rod 4, and the rubber rods 42 between the pair of connecting rods 4 are staggered; a tuning fork 43 is symmetrically fixedly connected to the inner wall of the first scraper 17, and the tuning fork 43 and the rubber rod 42 are arranged correspondingly; When the first scraper 17 slides along the steel plate 12, the runner 19 will rotate under the friction between the guide rail 18, thereby driving the connecting rod 4 to rotate. When the connecting rod 4 rotates, the rubber rod 42 will be driven to rotate together. The rotating rubber rod 42 will repeatedly hit the tuning fork 43 on one side, so that the tuning fork 43 will continuously generate vibration and transmit it to the surface of the first scraper 17, so as to accelerate the redistribution of impurities at the bottom of the first scraper 17 and improve the uniformity of impurities at the bottom of the first scraper 17. At the same time, since the rubber rods 42 on a pair of connecting rods 4 are staggered, the mechanical energy transmitted to the connecting rod 4 by the runner 19 can be effectively utilized and converted into the vibration of the tuning fork 43.

[0028] See also Figures 3 to 5 As shown, the first scraper 17 is symmetrically fixed with the second scraper 5 on both sides, and the second scraper 5 is arranged in an arc shape; the second scraper 5 and the guide rail 18 are both slidably matched; the runner 19 is located between the pair of second scrapers 5; By setting up the second scraper 5, when the first scraper 17 slides down or rises along the steel plate 12, the second scraper 5 can remove a small amount of impurities attached to the guide rail 18, so as to reduce the entanglement and pollution effect of these impurities on the runner 19, thereby ensuring the stable operation of the runner 19.

[0029] See also Figures 1 to 6As shown, a main pipe 6 is provided on one side of the first box body 1; a plurality of branch pipes 62 are connected to the middle of the main pipe 6, and the branch pipes 62 and the first box body 1 are arranged to penetrate; the steel plate 12 is located between the first scraper 17 and the branch pipe 62; a plurality of nozzles 63 are connected to the surface of the branch pipe 62; When filtering the water body, the grid area 13 can connect the main pipe 6 to the compressed air supply equipment, and realize the intermittent ejection of airflow from the nozzle 63 through the branch pipe 62 through the coordinated pulse valve and control module, so as to pulse-clear the holes on the inner wall of the grid area 13. The specific structure of the above-mentioned pulse valve and control module can be similar to the pulse spraying structure of the bag-type dust collector, which is also a mature existing technology, so it will not be repeated here. The impurities accumulated in the grid area 13 can be flushed out by the action of the airflow pulse to ensure the stable filtering function of the grid area 13 on the water body.

[0030] See also Figure 6 As shown, the end of the nozzle 63 is fixedly connected to a cylinder 7; the inner wall of the cylinder 7 is fixedly connected to a plurality of baffles 72, and the baffles 72 are staggered; By setting the cylinder 7 and the baffle 72, when there is no airflow in the branch pipe 62, the maze structure formed by the baffle 72 will block the particulate impurities entering the cylinder 7. When the airflow is ejected through the branch pipe 62 and the nozzle 63, the small amount of particulate impurities remaining in the baffle 72 will be discharged under the action of the air rush, so as to reduce the particulate impurities entering the branch pipe 62 and reduce the possibility of blockage of the nozzle 63.

[0031] See also Figures 7 to 9 As shown, the grit chamber includes a second box body 8; a slope 83 is provided at the bottom of the inner wall of the second box body 8; a plurality of columns 84 are symmetrically fixed to the inner wall of the slope 83; a plurality of baffles 82 are symmetrically fixed to the inner wall of the second box body 8, and the baffles 82 are arranged at an angle; the columns 84 are located between adjacent baffles 82; a sand discharge assembly is provided at the bottom of the slope 83; The filtered water is pumped from the first box 1 to the inside of the second box 8, and then the water can flow down the slope 83. During the flow of the water, it will pass through the cavity formed between the baffles 82. Because the cavity is set in the opposite direction of the water flow, the water will be subject to additional obstruction when flowing, and turbulence will be formed in the cavity to dissipate energy of the water, slow down the flow rate of the water in the second box 8, and promote the sedimentation of sand and gravel particles in the water. The settled particles will slide to the bottom under the action of the slope 83 and be discharged through the sand discharge component.

[0032] See also Figure 7 and Figure 8 As shown, one side of the second box 8 is rotatably connected to a plurality of vertical rods 9; the bottom of the vertical rods 9 is fixedly connected to a ball 92; By setting the ball 92, the water discharged from one side of the second box 8 will collide with the ball 92, causing the ball 92 to rotate a certain angle with the vertical rod 9, so as to convert the kinetic energy of the water into the potential energy of the ball 92, thereby further realizing the energy dissipation of the water in the second box 8.

[0033] See also Figure 9 As shown, the sand removal assembly includes a cylinder 10; the cylinder 10 is fixedly connected to the outer wall of the second box 8; the output end of the cylinder 10 is fixedly connected to a third scraper 1001; a crossbar 1002 is fixedly connected to one side of the third scraper 1001; the end of the crossbar 1002 is fixedly connected to a fixing plate 1003; the fixing plate 1003 is located inside the second box 8 and is configured to correspond to the shape of the inner wall of the slope 83; The staff can regularly start the cylinder 10 to discharge sand from the second box 8. After the cylinder 10 is started, it will drive the third scraper 1001, the cross bar 1002, and the fixed plate 1003 to move together. During the movement of the third scraper 1001, the sand and gravel at the bottom of the slope 83 will be scraped, and the fixed plate 1003 will open the second box 8 and discharge the sand and gravel from the original fixed plate 1003 to the collection box. It is worth mentioning that when discharging sand from the slope 83, it should be ensured that the pipe valve between the sand settling tank and the filter tank is in a closed state. In addition, the small amount of sand and gravel remaining on the slope 83 can be cleaned manually regularly.

[0034] Working principle: The wastewater is injected into the interior of the first box body 1 from the feed port on one side of the first box body 1 by pumping. The wastewater will pass through the inclined steel plate 12 in the first box body 1 and be intercepted by the grid area 13 on its surface. The suspended matter such as garbage in the water body can be intercepted. The filtered water can also be transported to the grit chamber by pumping to remove the particulate impurities in the water body. Finally, the pretreated water can be pumped from the grit chamber to the biological reactor for reaction treatment. The pump body, pipeline and valve involved in the above work are mature existing technologies, so the specific structure and principle will not be repeated. Impurities will be attached to the surface of the grid area 13 when filtering the water body. , at this time, the first motor 14 can be periodically turned on. After the first motor 14 is turned on, it will drive the rotating shaft 15 through the belt, so that the rotating shaft 15 rotates and the first scraper 17 is vertically controlled by the winding wire rope 16. The first scraper 17 will slide down along the steel plate 12 under the guidance of the guide rail 18 and the rotating wheel 19 under the action of the released wire rope 16 and its own gravity. The inclined end surface of the bottom of the first scraper 17 can remove impurities attached to the surface of the grid area 13. The removed impurities can be pushed into the waste discharge component by the first scraper 17 and transported to the collection tank for centralized treatment through the waste discharge component. It is worth mentioning that the first When the scraper 17 is not working, it will be located above the water level. At the same time, the scraping action of the first scraper 17 each time it cleans can be repeated many times to evenly remove impurities on the surface of the grille area 13. In addition, the water-facing surface of the first scraper 17 is also inclined, so it is difficult for impurities to adhere during cleaning. A small amount of impurities accumulated on the top of the first scraper 17 during the cleaning process can be removed by regular manual cleaning. Through the cooperation of the second motor 22 and the auger 23, when the first motor 14 is started to clean the surface of the grille area 13, the second motor 22 can be started in coordination to drive the auger 23 to rotate, and the auger 23 can remove the impurities pushed by the first scraper 17. The impurities delivered to the bottom trough 2 are spirally conveyed and transported through the bottom trough 2 to the collection trough for centralized processing. By providing the baffles 3 and the profile plates 32, when the first scraper 17 removes impurities on the surface of the grid area 13, the impurities will remain at the bottom of the first scraper 17 under the guidance of the inclined surface. At this time, due to the lateral guidance of the baffles 3, the impurities can be diffused and accumulated on both sides along the baffles 3. At the same time, the profile plates 32 can also cooperate with and expand the guiding effect of the baffles 3, thereby improving the uniformity of the impurity distribution at the bottom of the first scraper 17, thereby reducing the local accumulation of impurities in the bottom trough 2 and alleviating the workload of the auger 23.When the first scraper 17 slides along the steel plate 12, the runner 19 rotates under the friction between the guide rail 18, thereby driving the connecting rod 4 to rotate. When the connecting rod 4 rotates, the rubber rod 42 is driven to rotate together. The rotating rubber rod 42 repeatedly hits the tuning fork 43 on one side, so that the tuning fork 43 continuously generates vibration and transmits it to the surface of the first scraper 17, so as to accelerate the redistribution of impurities at the bottom of the first scraper 17 and improve the uniformity of impurities at the bottom of the first scraper 17. At the same time, since the rubber rods 42 on a pair of connecting rods 4 are staggered, the mechanical energy transmitted to the connecting rod 4 by the runner 19 can be effectively utilized and converted into the vibration of the tuning fork 43 ; By setting the second scraper 5, when the first scraper 17 slides down or rises along the steel plate 12, the second scraper 5 can remove a small amount of impurities attached to the guide rail 18, so as to reduce the entanglement and pollution of these impurities on the runner 19, and ensure the stable operation of the runner 19; when the grid area 13 filters the water body, it can connect the main pipe 6 to the compressed air supply equipment, and realize the intermittent ejection of air flow from the nozzle 63 through the branch pipe 62 through the coordinated pulse valve and control module, so as to pulse dredge the holes on the inner wall of the grid area 13. The specific structure of the above-mentioned pulse valve and control module can be similar to the pulse injection structure of the bag-type dust collector, which is also a mature existing technology. Therefore, No further details will be given here. Impurities accumulated in the grille area 13 can be flushed out by the action of air pulses to ensure the stable filtering function of the grille area 13 on the water body. By setting the cylinder 7 and the baffle 72, when there is no air flow in the branch pipe 62, the maze structure formed by the baffle 72 will block the particle impurities entering the cylinder 7. When the air flow is ejected through the branch pipe 62 and the nozzle 63, the small amount of particle impurities remaining in the baffle 72 will be discharged under the action of the air pulse to reduce the particle impurities entering the branch pipe 62 and reduce the clogging of the nozzle 63. The filtered water is pumped from the first box 1 to the inside of the second box 8, and then the water can flow down along the slope 83. During the flow of the water, it will pass through the cavity formed between the baffles 82. Since the cavity is arranged in the opposite direction to the flow of the water, the water will be subject to additional obstruction during the flow, and turbulence will be formed in the cavity to dissipate the energy of the water, slow down the flow rate of the water in the second box 8, and promote the sedimentation of the sand and gravel particles in the water. The settled particles will slide to the bottom under the action of the slope 83 and be discharged through the sand discharge component; by providing the ball 92, the water will collide with the ball 92 after being discharged from one side of the second box 8, causing the ball 92 to rotate a certain angle with the vertical rod 9, so as to convert the kinetic energy of the water into the potential energy of the ball 92, thereby further realizing the energy dissipation of the water in the second box 8;Staff can periodically activate the cylinder 10 to drain sand from the second chamber 8. Once activated, the cylinder 10 drives the third scraper 1001, crossbar 1002, and fixed plate 1003 to move together. The third scraper 1001 scrapes the sand and gravel at the bottom of the slope 83, while the fixed plate 1003 opens the second chamber 8 and drains the sand and gravel from the fixed plate 1003 into the collection box. It's worth noting that when draining sand from the slope 83, the valve in the pipe between the grit chamber and the filter tank should be closed. Any remaining sand and gravel on the slope 83 can be manually cleaned periodically.

[0035] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A wastewater pre-treatment device, comprising a filter tank and a grit chamber, characterized in that: The filter tank comprises a first box body (1), a feed port is provided on one side of the first box body (1); a steel plate (12) is provided through the inner wall of the first box body (1), and the steel plate (12) located inside the first box body (1) is inclined; a grid area (13) is provided on the surface of the inclined steel plate (12); a first motor (14) and a rotating shaft (15) are provided on the top of the steel plate (12); the first motor (14) and the steel plate (12) are fixedly connected, and both sides of the rotating shaft (15) are rotatably connected to the steel plate (12) through plates. 12) top; a belt is provided between the output end of the first motor (14) and the end of the rotating shaft (15); a steel wire rope (16) is symmetrically fixed to the surface of the rotating shaft (15), and a first scraper (17) is fixed to the end of the steel wire rope (16); the end face of the first scraper (17) is inclined; guide rails (18) are symmetrically fixed to both sides of the steel plate (12); a pair of rotating wheels (19) are rotatably connected to both sides of the first scraper (17), and the rotating wheels (19) and the guide rails (18) are in sliding fit; a waste discharge assembly is provided at the bottom of the steel plate (12); The grit chamber is used to remove granular impurities such as sand and gravel from wastewater.

2. The wastewater pre-treatment equipment according to claim 1, characterized in that: The waste discharge assembly comprises a bottom trough (2) connected to the bottom of the inner wall of the first box body (1); a second motor (22) is fixedly connected to one side of the bottom trough (2); an auger (23) is fixedly connected to the output end of the second motor (22); the auger (23) and the bottom trough (2) are interpenetratingly arranged and rotatably connected.

3. The wastewater pre-treatment equipment according to claim 2, characterized in that: A plurality of baffles (3) are fixedly connected to the bottom of the first scraper (17); the baffles (3) are arranged in a wave shape; and profile plates (32) are symmetrically fixedly connected to both sides of the baffles (3), and the profile plates (32) are arranged in an inclined manner.

4. The wastewater pre-treatment equipment according to claim 3, characterized in that: A connecting rod (4) is fixedly connected between a pair of parallel rotating wheels (19), and the connecting rod (4) and the first scraper (17) are arranged to penetrate each other; a plurality of rubber rods (42) are fixedly connected to the outer wall of the connecting rod (4), and the rubber rods (42) between the pair of connecting rods (4) are arranged in a staggered manner; a tuning fork (43) is symmetrically fixedly connected to the inner wall of the first scraper (17), and the tuning fork (43) and the rubber rod (42) are arranged in a corresponding manner.

5. The wastewater pre-treatment equipment according to claim 4, characterized in that: The first scraper (17) is symmetrically fixed with second scrapers (5) on both sides, and the second scrapers (5) are arranged in an arc shape; the second scraper (5) and the guide rail (18) are both slidably matched; the rotating wheel (19) is located between the pair of second scrapers (5).

6. The wastewater pre-treatment equipment according to claim 5, characterized in that: A main pipe (6) is provided on one side of the first box body (1); a plurality of branch pipes (62) are connected to the middle of the main pipe (6), and the branch pipes (62) and the first box body (1) are arranged to penetrate; the steel plate (12) is located between the first scraper (17) and the branch pipe (62); and a plurality of nozzles (63) are connected to the surface of the branch pipe (62).

7. The wastewater pre-treatment equipment according to claim 6, characterized in that: The end of the nozzle (63) is fixedly connected to a cylinder (7); the inner wall of the cylinder (7) is fixedly connected to a plurality of baffles (72), and the baffles (72) are arranged in a staggered manner.

8. The wastewater pre-treatment equipment according to claim 7, characterized in that: The grit chamber comprises a second box (8); a slope (83) is provided at the bottom of the inner wall of the second box (8); a plurality of columns (84) are symmetrically fixed to the inner wall of the slope (83); a plurality of baffles (82) are symmetrically fixed to the inner wall of the second box (8), and the baffles (82) are arranged at an angle; the columns (84) are located between adjacent baffles (82); and a sand discharge assembly is provided at the bottom of the slope (83).

9. The wastewater pre-treatment equipment according to claim 8, characterized in that: One side of the second box (8) is rotatably connected to a plurality of vertical rods (9); a ball (92) is fixed to the bottom of the vertical rod (9).

10. The wastewater pre-treatment equipment according to claim 9, characterized in that: The sand discharge assembly comprises a cylinder (10); the cylinder (10) and the outer wall of the second box (8) are in a fixed relationship; the output end of the cylinder (10) is fixedly connected to a third scraper (1001); one side of the third scraper (1001) is fixedly connected to a crossbar (1002); the end of the crossbar (1002) is fixedly connected to a fixing plate (1003); the fixing plate (1003) is located inside the second box (8) and is arranged to correspond to the shape of the inner wall of the slope (83).

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