Wastewater circulating treatment equipment and use method thereof

Abstract

The invention relates to the technical field of wastewater treatment, and provides wastewater circulation treatment equipment and a using method thereof.The wastewater circulation treatment equipment comprises a tank body, an inner cylinder is fixed to the bottom of an inner cavity of the tank body, and the inner cavity of the tank body is rotationally connected with a driving rod piece vertically penetrating through the tank body and the inner cylinder; a first motor capable of driving the driving rod piece to rotate is fixed to the top face of the tank body, the driving rod piece comprises a first pipe shaft, a second pipe shaft and a third pipe shaft from top to bottom, and a first net cover capable of guiding filter residues out of the inner cylinder is arranged on the outer side of the first pipe shaft; two stirring assemblies capable of stirring and mixing wastewater and chemicals in the tank body are symmetrically arranged on the outer side of the second tubular shaft; waste water entering the tank body is firstly filtered by the first mesh enclosure, the driving rod piece is driven by the first motor to rotate, the driving rod piece drives the first mesh enclosure to rotate synchronously, and filter residues on the surface of the first mesh enclosure are thrown out under the action of centrifugal force generated by rotation of the first mesh enclosure and fall on the periphery of the inner cylinder by attaching to the inner wall of the tank body.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a wastewater circulation treatment device and a use method thereof. Background Art

[0002] Chemical wastewater refers to the wastewater produced in the process of chemical plant production. After biochemical treatment, it can generally meet the national secondary emission standards. Due to the shortage of water resources, the water that meets the emission standards needs to be further deeply treated to meet the recycling requirements of industrial water replenishment. Therefore, wastewater treatment has become one of the indispensable processes before wastewater discharge, and wastewater treatment equipment is needed at this time.

[0003] After searching, the patent technology with announcement number CN220684727U discloses chemical wastewater treatment equipment to solve the problem that the existing wastewater treatment equipment cannot evenly add medicine during use. The chemical wastewater treatment equipment includes: a storage mechanism; the storage mechanism is the wastewater treatment equipment body, and the main body is a cylindrical structure; the fixing mechanism is installed at the top of the storage mechanism; the stirring mechanism is installed inside the storage mechanism; the fixing part is fixedly installed at the top of the main body; the rotating part is rotatably installed at the bottom of the fixing part; the mounting part is rotatably installed at the top of the rotating part. The stirring part is driven to rotate by the motor on the main body, so that when the stirring part rotates, the gears on the rotating part are meshed with each other, thereby driving the rotating part and the mounting part to rotate, and the top of the mounting part is set to an inclined structure, so that the medicine can be discharged quantitatively from the discharge port on the mounting part, so that after the wastewater enters the main body, it can be better integrated with the medicine, and the wastewater can be better treated.

[0004] However, the above-mentioned chemical wastewater treatment equipment still has the following problems: the above-mentioned chemical wastewater treatment equipment realizes the filtration of impurities in the wastewater by setting a disc-shaped filter screen in the tank body, and the filtered residue will remain on the surface of the filter screen and accumulate, which is difficult to clean. Summary of the invention

[0005] The invention provides a wastewater circulation treatment device and a use method thereof, which solves the problem in the prior art that filter residues are left on the filter screen surface causing accumulation and being difficult to clean.

[0006] The technical solution of the present invention is as follows: a wastewater circulation treatment device comprises a tank body, an inner cylinder is fixed at the bottom of the inner cavity of the tank body, a driving rod which vertically penetrates the tank body and the inner cylinder is rotatably connected to the inner cavity of the tank body, a first motor which can drive the driving rod to rotate is fixed to the top surface of the tank body, the driving rod comprises a first pipe axis, a second pipe axis and a third pipe axis from top to bottom, a first mesh cover which can guide the filter residue to the outside of the inner cylinder is arranged on the outer side of the first pipe axis, two stirring assemblies which can stir and mix the wastewater and the reagent in the tank body are symmetrically arranged on the outer side of the second pipe axis, a second mesh cover which is settled at the bottom of the inner cavity of the inner cylinder is arranged on the outer side of the third pipe axis, and the A lifting assembly is slidingly arranged on the inner side of the third pipe shaft, a second motor is fixed to the bottom surface of the tank body to drive the lifting assembly to drive the second mesh cover to move up and down, a traction assembly is arranged on the inner side of the first pipe shaft to drive the first mesh cover to move up and down in the opposite direction relative to the second mesh cover, an elastic locking assembly is arranged on the inner side of the second pipe shaft to release the lock of the second pipe shaft under the top pressure when the lifting assembly is lifted upward, the two stirring assemblies swing downward in coordination with the elastic locking assembly and drive the second pipe shaft to rotate differentially relative to the first pipe shaft and the third pipe shaft under the action of the wastewater resistance in the tank body, and then the two stirring assemblies scrape and brush the first mesh cover and the second mesh cover that are close to each other up and down.

[0007] Preferably, a conical base is provided at the bottom of the inner cylinder, a sewage outlet is provided at the top of the inner cylinder, a flow guide cover is fixed to the periphery of the top of the inner cylinder, and an annular filter screen distributed around the conical base is fixed to the bottom of the inner cylinder.

[0008] Preferably, the first mesh cover is conical, and the bottom diameter of the first mesh cover is smaller than the inner diameter of the tank body and larger than the outer diameter of the inner cylinder.

[0009] Preferably, the second mesh cover is conical and matches the conical base, and the taper of the first mesh cover is consistent with the taper of the second mesh cover.

[0010] Preferably, the lifting assembly includes a threaded sleeve, which is threadedly connected to the output shaft of the second motor, a lower sliding seat is fixed to the top of the second mesh cover, and lower sliding grooves that slide with the lower sliding seat are opened on both sides of the third tube shaft. The lower sliding seat is fixed to the top of the threaded sleeve, and a guide rod is fixed to the top of the lower sliding seat. A flange is provided on the outer side of the bottom of the guide rod, and the top of the guide rod passes through the second tube shaft and extends into the first tube shaft. The guide rod is located in the first tube shaft. Both sides of the first convex strips that are slidably connected to the first tube shaft are provided.

[0011] Preferably, the elastic locking assembly includes a sleeve, which is sleeved on the outside of the guide rod, and a pressure plate is fixed to the outside of the sleeve. The bottom surface of the pressure plate is provided with a latching tooth that can engage with the upper surface of the third tube shaft. The pressure plate is elastically connected to the second tube shaft through a spring, and second convex strips that are slidably connected to the inner wall of the second tube shaft are provided on both sides of the top of the sleeve, and a section of straight tooth surface is provided on the bottom outer side surface of the second convex strip.

[0012] Preferably, the stirring assembly includes a plurality of stirring rods which are parallel and equidistantly arranged up and down, and movable grooves are provided on both sides of the second tube axis. The stirring rods on the two stirring assemblies are respectively hinged in the movable grooves on both sides of the second tube axis, and the middle part of each stirring rod is hinged by a connecting rod. A row of cleaning brushes are fixed on the upper surface of the top stirring rod and the lower surface of the bottom stirring rod, and the outer surface of one end of the stirring rod at the bottom close to the second tube axis is provided with an arc-shaped tooth surface meshing with the straight tooth surface.

[0013] Preferably, the traction assembly includes a main lifting rope, the lower end of which is fixed to a lower sliding seat, a connecting block is fixed to the upper end of the main lifting rope, two auxiliary lifting ropes are symmetrically fixed to the top of the connecting block, upper sliding grooves are opened on both sides of the first tube axis, and fixed pulleys are rotatably connected in the upper sliding grooves on both sides, and the two auxiliary lifting ropes respectively pass around the two fixed pulleys and are fixed to the edge of the first mesh cover.

[0014] Preferably, a water inlet pipe and a dosing pipe are fixed on the top of the tank body, a sewage pipe leading to the periphery of the bottom of the inner cylinder is fixed on one side of the bottom of the tank body, and drainage pipes leading to the bottom cavity of the inner cylinder are fixed on both sides of the bottom of the tank body.

[0015] Based on the above wastewater circulation treatment equipment, the present invention also proposes a method for using the wastewater treatment equipment, comprising the following steps:

[0016] Step 1: The wastewater entering the tank body is first filtered by the first mesh cover, and the first motor drives the driving rod to rotate, and the driving rod rotates synchronously with the first mesh cover, and the filter residue on the surface of the first mesh cover is thrown out to the surroundings under the centrifugal force generated by the rotation of the first mesh cover, and falls on the outer periphery of the inner cylinder along the inner wall of the tank body;

[0017] Step 2: the medicine and wastewater entering the tank are mixed, and the stirring assembly is driven by the driving rod to mix and stir the medicine and wastewater. After stirring for a period of time, the first motor stops and stands still, so that impurities in the wastewater are flocculated under the action of the medicine;

[0018] Step 3, start the second motor to drive the second mesh cover to move upward through the lifting assembly, and lift the flocculants in the inner cylinder upward under the filtration of the second mesh cover;

[0019] Step 4, the first motor is turned on again to drive the driving rod, and the driving rod drives the second mesh cover to rotate. The flocculants are thrown out to the surroundings under the centrifugal force generated by the rotation of the second mesh cover, and fall on the outer periphery of the inner cylinder along the inner wall of the tank body;

[0020] Step 5: When the lifting component moves upward, it can press the elastic locking component, so that the stirring components on both sides swing downward synchronously under the action of the elastic locking components;

[0021] Step six, the elastic locking component is released from the lock of the second pipe shaft under the top pressure of the lifting component, and the stirring components on both sides are affected by the resistance of the wastewater in the tank body, so that the second pipe shaft can rotate differentially relative to the first pipe shaft and the second pipe shaft. Because the first mesh cover is lowered downward by the traction of the traction component, the differential rotation of the stirring component can scrape and brush the first mesh cover and the second mesh cover that are close to each other at the same time.

[0022] The beneficial effects of the present invention are:

[0023] 1. When the present invention is used, the wastewater entering the tank body is first filtered by the first mesh cover, and the first motor drives the driving rod to rotate, and the driving rod drives the first mesh cover to rotate synchronously, and the filter residue on the surface of the first mesh cover is thrown out to the surroundings under the centrifugal force generated by the rotation of the first mesh cover, and falls on the periphery of the inner cylinder along the inner wall of the tank body;

[0024] 2. After a certain period of flocculation, the second motor is operated by the lifting assembly to drive the second screen cover to move upward. Under the filtration of the second screen cover, the flocculants in the inner cylinder are lifted upward. The first motor is started again to drive the driving rod, and the driving rod drives the second screen cover to rotate. Under the centrifugal force generated by the rotation of the second screen cover, the flocculants are thrown out to the surroundings and fall on the outer periphery of the inner cylinder along the inner wall of the tank body.

[0025] 3. In the present invention, the stirring assembly is in the initial state, and the stirring assembly can mix the medicine and wastewater entering the tank body with the driving of the driving rod, and when the lifting assembly moves upward, it can press the elastic locking assembly, so that the stirring assemblies on both sides swing downward synchronously under the action of the elastic locking assembly, so as to facilitate subsequent scraping;

[0026] 4. In the present invention, when the elastic locking assembly is released from the second pipe shaft under the top pressure of the lifting assembly, the stirring assemblies on both sides are affected by the resistance of the wastewater in the tank body, so that the second pipe shaft can rotate differentially relative to the first pipe shaft and the second pipe shaft. Because the first mesh cover is pulled downward by the traction of the traction assembly, the differential rotation of the stirring assembly can simultaneously scrape and brush the first mesh cover and the second mesh cover that are close to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Figure 1 A schematic diagram of a half-section structure of a wastewater circulation treatment device proposed by the present invention;

[0029] Figure 2 A half-section front view structural schematic diagram of a wastewater circulation treatment device proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the inner cylinder structure proposed by the present invention;

[0031] Figure 4 A schematic diagram of a half-section structure of a lifting assembly proposed by the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the elastic locking assembly proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the stirring assembly proposed by the present invention;

[0034] Figure 7 for Figure 1 The enlarged structural diagram at B in the middle;

[0035] Figure 8 for Figure 1 The enlarged structural diagram at A in the middle;

[0036] In the figure: 1, tank body; 2, inner tube; 21, conical bottom support; 22, sewage outlet; 23, guide cover; 24, annular filter; 3, driving rod; 31, first pipe axis; 311, upper slide groove; 32, second pipe axis; 321, movable groove; 33, third pipe axis; 331, lower slide groove; 4, first net cover; 41, upper slide seat; 5, second net cover; 51, lower slide seat; 6, first motor; 7, second motor; 8, lifting assembly; 81, threaded sleeve; 82, guide rod; 83, flange; 84. first convex strip; 9. stirring assembly; 91. stirring rod; 92. connecting rod; 93. cleaning brush; 94. arc-shaped tooth surface; 10. elastic locking assembly; 101. sleeve; 102. pressure plate; 103. latching teeth; 104. spring; 105. second convex strip; 106. straight tooth surface; 11. water inlet pipe; 12. dosing pipe; 13. sewage pipe; 14. drainage pipe; 15. traction assembly; 151. main lifting rope; 152. connecting block; 153. auxiliary lifting rope; 154. fixed pulley. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0038] See also Figure 1 and Figure 2 The present invention provides a technical solution: a wastewater circulation treatment device, comprising a tank body 1, an inner cylinder 2 is fixed at the bottom of the inner cavity of the tank body 1, a driving rod 3 vertically penetrating the tank body 1 and the inner cylinder 2 is rotatably connected to the inner cavity of the tank body 1, a first motor 6 capable of driving the driving rod 3 to rotate is fixed to the top surface of the tank body 1, the driving rod 3 comprises a first pipe shaft 31, a second pipe shaft 32 and a third pipe shaft 33 from top to bottom, a first mesh cover 4 capable of guiding the filter residue to the outside of the inner cylinder 2 is arranged on the outer side of the first pipe shaft 31, the first mesh cover 4 is conical, the bottom diameter of the first mesh cover 4 is smaller than the inner diameter of the tank body 1 and larger than the outer diameter of the inner cylinder 2, two stirring components 9 capable of stirring and mixing the wastewater and the reagent in the tank body 1 are symmetrically arranged on the outer side of the second pipe shaft 32, a second mesh cover 5 settled at the bottom of the inner cavity of the inner cylinder 2 is arranged on the outer side of the third pipe shaft 33, the second mesh cover 5 is conical And it is adapted to the conical base 21, the taper of the first mesh cover 4 is consistent with the taper of the second mesh cover 5, a lifting component 8 is slidably arranged on the inner side of the third pipe shaft 33, and a second motor 7 is fixed on the bottom surface of the tank body 1 for driving the lifting component 8 to drive the second mesh cover 5 to move up and down, a traction component 15 is arranged on the inner side of the first pipe shaft 31 to pull the first mesh cover 4 to move up and down relative to the second mesh cover 5 in the opposite direction, and an elastic locking component 10 is arranged on the inner side of the second pipe shaft 32 to release the lock of the second pipe shaft 32 under the top pressure when the lifting component 8 is lifted upward, and the two stirring components 9 cooperate with the elastic locking component 10 to swing downward and drive the second pipe shaft 32 to rotate differentially relative to the first pipe shaft 31 and the third pipe shaft 33 under the action of the wastewater resistance in the tank body 1, and then the two stirring components 9 scrape the first mesh cover 4 and the second mesh cover 5 that are close to each other up and down.

[0039] See also Figure 3 A conical base 21 is provided at the bottom of the inner cylinder 2, which can fit with the second mesh cover 5. A sewage outlet 22 is opened at the top of the inner cylinder 2, which is used to discharge the flocculants to the periphery of the inner cylinder 2. A guide cover 23 is fixed to the periphery of the top of the inner cylinder 2, which is used to prevent the filter residue filtered by the first mesh cover 4 from entering the inner cylinder 2 through the sewage outlet 22. An annular filter screen 24 distributed around the conical base 21 is fixed to the bottom of the inner cylinder 2, which is used to isolate the dirt outside the inner cylinder 2.

[0040] See also Figure 1 , Figure 2 and Figure 4The lifting assembly 8 includes a threaded sleeve 81, which is threadedly connected to the output shaft of the second motor 7. A lower sliding seat 51 is fixed on the top of the second net cover 5, and lower sliding grooves 331 that slide with the lower sliding seat 51 are opened on both sides of the third pipe shaft 33. The lower sliding seat 51 is fixed to the top of the threaded sleeve 81, and a guide rod 82 is fixed on the top of the lower sliding seat 51. A flange 83 is provided on the outer bottom of the guide rod 82. The top of the guide rod 82 passes through the second pipe shaft 32 and extends into the first pipe shaft 31. The guide rod 82 is located in the first pipe shaft 31. Both sides of the first convex strips 84 that are slidably connected with the first pipe shaft 31 are provided. Through the threaded relationship between the output shaft of the second motor 7 and the threaded sleeve 81, and the sliding limit of the lower sliding seat 51 and the lower sliding groove 331, the lower sliding seat 51 is driven to move upward with the second net cover 5. Under the filtration of the second net cover 5, the flocculants in the inner cylinder 2 can be lifted up.

[0041] See also Figure 1 , Figure 2 and Figure 5 The elastic locking assembly 10 includes a sleeve 101, which is sleeved on the outside of the guide rod 82. A pressure plate 102 is fixed to the outside of the sleeve 101. The bottom surface of the pressure plate 102 is provided with a latching tooth 103 that can engage with the upper surface of the third tube shaft 33. The pressure plate 102 is elastically connected to the second tube shaft 32 through a spring 104. Second convex strips 105 that are slidably connected to the inner wall of the second tube shaft 32 are provided on both sides of the top of the sleeve 101, and a section of straight tooth surface 106 is provided on the outer side surface of the bottom of the second convex strip 105.

[0042] See also Figure 1 , Figure 2 and Figure 6 The stirring assembly 9 includes a plurality of stirring rods 91 which are parallel and equidistantly arranged in the upper and lower parts. A movable groove 321 is provided on both sides of the second tube shaft 32. The stirring rods 91 on the two stirring assemblies 9 are respectively hinged in the movable grooves 321 on both sides of the second tube shaft 32. The middle parts of the stirring rods 91 are hinged by a connecting rod 92. A row of cleaning brushes 93 are fixed on the upper surface of the top stirring rod 91 and the lower surface of the bottom stirring rod 91. The outer surface of one end of the stirring rod 91 at the bottom close to the second tube shaft 32 is provided with an arc tooth surface 94 meshing with the straight tooth surface 106. Figure 8As shown, the arcuate tooth surface 94 on the stirring rod 91 at the bottom is meshed with the straight tooth surface 106, the medicine enters the tank body 1 through the dosing pipe 12 and mixes with the wastewater, and the stirring rod 91 mixes and stirs the medicine and the wastewater under the drive of the driving rod 3. After stirring for a period of time, the first motor 6 stops and stands still, so that the impurities in the wastewater are flocculated under the action of the medicine, and the threaded sleeve 81 can press the sleeve 101 through the flange 83 outside the guide rod 82 when moving upward, so that the locking teeth 103 on the bottom surface of the pressure plate 102 are disengaged from the top surface of the third pipe shaft 33, that is, the locking of the second pipe shaft 32 and the third pipe shaft 33 is released, and in this process, the sleeve 101 is pushed upward and can be driven by the straight tooth surfaces 106 on the surfaces of the second convex strips 105 on both sides to mesh with the arcuate tooth surfaces 94 of the stirring rods 91 on both sides, so as to drive the stirring rods 91 at the bottom to swing downward, and the hinged relationship of the connecting rod 92 can drive each stirring rod 91 to swing downward synchronously.

[0043] See also Figure 1 , Figure 2 and Figure 7 The traction assembly 15 includes a main suspension rope 151, the lower end of the main suspension rope 151 is fixed to the lower sliding seat 51, the upper end of the main suspension rope 151 is fixed with a connecting block 152, and two auxiliary suspension ropes 153 are symmetrically fixed to the top of the connecting block 152. Upper slide grooves 311 are opened on both sides of the first pipe shaft 31, and fixed pulleys 154 are rotatably connected in the upper slide grooves 311 on both sides. The two auxiliary suspension ropes 153 respectively pass around the two fixed pulleys 154 and are fixed to the edge of the first net cover 4. When the second net cover 5 moves upward, the main suspension rope 151 is lifted upward, so that the two auxiliary suspension ropes 153 lower the first net cover 4 downward under the conduction of the fixed pulley 154. Conversely, when the second net cover 5 moves downward, the first net cover 4 is pulled upward.

[0044] See also Figure 1 and Figure 2 A water inlet pipe 11 and a dosing pipe 12 are fixed on the top of the tank body 1, which are used to enter wastewater and medicine respectively. A sewage pipe 13 leading to the periphery of the bottom of the inner tube 2 is fixed on one side of the bottom of the tank body 1, which is used to discharge the dirt around the bottom of the inner tube 2. Drain pipes 14 leading to the bottom cavity of the inner tube 2 are fixed on both sides of the bottom of the tank body 1, which are used to discharge the purified water in the bottom cavity of the inner tube 2 to achieve recycling.

[0045] Based on the above embodiments, the present invention further proposes a method for using a wastewater treatment device, comprising the following steps:

[0046] Step 1: The wastewater entering the tank body 1 is first filtered by the first mesh cover 4, and the first motor 6 drives the driving rod 3 to rotate, and the driving rod 3 rotates synchronously with the first mesh cover 4, and the filter residue on the surface of the first mesh cover 4 is thrown out to the surroundings under the centrifugal force generated by the rotation of the first mesh cover 4, and falls on the outer periphery of the inner cylinder 2 along the inner wall of the tank body 1;

[0047] Step 2: the medicine solution entering the tank body 1 is mixed with the wastewater, and the stirring assembly 9 is driven by the driving rod 3 to mix and stir the medicine solution and the wastewater. After stirring for a period of time, the first motor 6 stops and stands still, so that the impurities in the wastewater are flocculated under the action of the medicine solution;

[0048] Step 3, start the second motor 7 to drive the second mesh cover 5 to move upward through the lifting assembly 8, and lift the flocculants in the inner tube 2 upward under the filtration of the second mesh cover 5;

[0049] Step 4, the first motor 6 is turned on again to drive the driving rod 3, and the driving rod 3 drives the second mesh cover 5 to rotate. The flocculants are thrown out to the surroundings under the centrifugal force generated by the rotation of the second mesh cover 5, and fall on the outer periphery of the inner cylinder 2 along the inner wall of the tank body 1;

[0050] Step 5: When the lifting component 8 moves upward, it can press the elastic locking component 10, so that the stirring components 9 on both sides swing downward synchronously under the action of the elastic locking components 10;

[0051] Step six, the elastic locking component 10 is released from the lock on the second pipe shaft 32 under the top pressure of the lifting component 8, and the stirring components 9 on both sides are affected by the resistance of the wastewater in the tank body 1, so that the second pipe shaft 32 can rotate differentially relative to the first pipe shaft 31 and the second pipe shaft 32. Because the first mesh cover 4 is pulled downward by the traction of the traction component 15, the differential rotation of the stirring component 9 can simultaneously scrape the first mesh cover 4 and the second mesh cover 5 that are close to each other.

[0052] The working principle and detailed process of the present invention are as follows: wastewater enters the tank body 1 through the water inlet pipe 11, and is first filtered by the first mesh cover 4, and the first motor 6 drives the driving rod 3 to rotate, and the driving rod 3 drives the first mesh cover 4 to rotate synchronously, and the filter residue on the surface of the first mesh cover 4 is thrown out to the surroundings under the centrifugal force generated by the rotation of the first mesh cover 4, and falls on the outer periphery of the inner cylinder 2 along the inner wall of the tank body 1;

[0053] The medicine solution enters the tank body 1 through the medicine adding pipe 12 and is mixed with the wastewater, and the stirring rod 91 is driven by the driving rod 3 to mix and stir the medicine solution and the wastewater. After stirring for a period of time, the first motor 6 stops and stands still, so that the impurities in the wastewater are flocculated under the action of the medicine solution;

[0054] The second motor 7 is turned on to work. Through the threaded relationship between the output shaft of the second motor 7 and the threaded sleeve 81, and the sliding limit of the lower slide seat 51 and the lower slide groove 331, the lower slide seat 51 is driven to move upward with the second mesh cover 5. Under the filtration of the second mesh cover 5, the flocculants in the inner cylinder 2 can be lifted upward until the bottom edge of the second mesh cover 5 reaches the position of the sewage outlet 22.

[0055] The first motor 6 is turned on again to drive the driving rod 3, and the driving rod 3 drives the second mesh cover 5 to rotate. The centrifugal force generated by the rotation of the second mesh cover 5 throws the floccules to the surroundings and falls on the outer periphery of the inner cylinder 2 along the inner wall of the tank body 1;

[0056] When the threaded sleeve 81 moves upward, it can press the sleeve 101 through the flange 83 outside the guide rod 82, so that the locking teeth 103 on the bottom surface of the pressure plate 102 and the top surface of the third pipe shaft 33 are disengaged, that is, the locking of the second pipe shaft 32 and the third pipe shaft 33 is released. In this process, the sleeve 101 is pushed upward, and the straight tooth surfaces 106 on the surfaces of the second convex strips 105 on both sides are engaged with the arc-shaped tooth surfaces 94 of the stirring rods 91 on both sides, so as to drive the stirring rods 91 at the bottom to swing downward, and the hinged relationship of the connecting rod 92 can drive each stirring rod 91 to swing downward synchronously.

[0057] Since the elastic locking assembly 10 is pressed by the lifting assembly 8 to release the lock on the second pipe shaft 32, when the first pipe shaft 31 and the third pipe shaft 33 rotate, the stirring rods 91 on both sides are affected by the resistance of the wastewater in the tank body 1, so that the second pipe shaft 32 can rotate at a differential speed relative to the first pipe shaft 31 and the second pipe shaft 32. In addition, when the second net cover 5 moves upward, the main suspension rope 151 is lifted upward, so that the two auxiliary suspension ropes 153 lower the first net cover 4 downward under the transmission of the fixed pulley 154, that is, the first net cover 4 is pulled upward by the traction assembly 154. The height is lowered downward by the pulling effect of the member 15, so that the first mesh cover 4 is close to the stirring rod 91 located at the upper part, and the second mesh cover 5 is close to the stirring rod 91 located at the lower part. Under the differential rotation of the second tube shaft 32 relative to the first tube shaft 31 and the third tube shaft 33, the cleaning brush 93 on the upper and lower stirring rods 91 can simultaneously scrape the first mesh cover 4 and the second mesh cover 5 that are close to each other, so as to facilitate the clogging of the meshes of the first mesh cover 4 and the second mesh cover 5, and at the same time, it is beneficial to discharge the dirt on the first mesh cover 4 and the second mesh cover 5 to the periphery of the inner tube 2;

[0058] After cleaning for a certain period of time, the inner tube 2 is left to stand for a while, and the dirt on the outer periphery of the inner tube 2 is discharged through the sewage pipe 13, and the purified water in the inner tube 2 is discharged through the drainage pipe 14 for recycling;

[0059] Based on the above content, it can be seen that the present invention operates stably and reliably, is highly efficient and energy-saving, not only improves the level of automation and reduces operating costs, but also ensures the reliability and effectiveness of the project, reduces the workload of daily maintenance and repair, and improves the operating conditions of workers.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wastewater circulation treatment device, comprising a tank (1), characterized in that: An inner cylinder (2) is fixed to the bottom of the inner cavity of the tank body (1), and a driving rod (3) vertically penetrating the tank body (1) and the inner cylinder (2) is rotatably connected to the inner cavity of the tank body (1). A first motor (6) capable of driving the driving rod (3) to rotate is fixed to the top surface of the tank body (1). The driving rod (3) comprises, from top to bottom, a first tube shaft (31), a second tube shaft (32) and a third tube shaft (33). A first mesh cover (4) capable of guiding the filter residue to the outside of the inner cylinder (2) is arranged on the outer side of the first tube shaft (31), and two stirring assemblies (9) capable of stirring and mixing the wastewater and the reagent in the tank body (1) are symmetrically arranged on the outer side of the second tube shaft (32). A second mesh cover (5) settled at the bottom of the inner cavity of the inner cylinder (2) is arranged on the outer side of the third tube shaft (33), and a lifting member (6) is slidably arranged on the inner side of the third tube shaft (33). A lifting assembly (8) is provided on the bottom surface of the tank body (1), and a second motor (7) is fixed thereon for driving the lifting assembly (8) to drive the second mesh cover (5) to move up and down. A traction assembly (15) is provided on the inner side of the first pipe shaft (31) for driving the first mesh cover (4) to move up and down in the opposite direction relative to the second mesh cover (5). An elastic locking assembly (10) is provided on the inner side of the second pipe shaft (32) for releasing the lock of the second pipe shaft (32) under the top pressure when the lifting assembly (8) is lifted upward. The two stirring assemblies (9) cooperate with the elastic locking assembly (10) to swing downward and drive the second pipe shaft (32) to rotate at a differential speed relative to the first pipe shaft (31) and the third pipe shaft (33) under the action of the wastewater resistance in the tank body (1), so that the two stirring assemblies (9) scrape the first mesh cover (4) and the second mesh cover (5) that are close to each other.

2. A wastewater circulation treatment equipment according to claim 1, characterized in that: A conical base (21) is provided at the bottom of the inner cylinder (2), a sewage outlet (22) is provided at the top of the inner cylinder (2), a flow guide cover (23) is fixed to the periphery of the top of the inner cylinder (2), and an annular filter screen (24) distributed around the conical base (21) is fixed to the bottom of the inner cylinder (2).

3. A wastewater circulation treatment equipment according to claim 2, characterized in that: The first mesh cover (4) is conical, and the bottom diameter of the first mesh cover (4) is smaller than the inner diameter of the tank body (1) and larger than the outer diameter of the inner cylinder (2).

4. A wastewater circulation treatment equipment according to claim 3, characterized in that: The second mesh cover (5) is conical and matches the conical base (21), and the taper of the first mesh cover (4) is consistent with the taper of the second mesh cover (5).

5. The wastewater circulation treatment equipment according to claim 1, characterized in that: The lifting assembly (8) comprises a threaded sleeve (81), wherein the threaded sleeve (81) is threadedly connected to the output shaft of the second motor (7), a lower sliding seat (51) is fixed on the top of the second mesh cover (5), and lower sliding grooves (331) slidably matched with the lower sliding seat (51) are provided on both sides of the third tube shaft (33), the lower sliding seat (51) is fixed to the top of the threaded sleeve (81), a guide rod (82) is fixed on the top of the lower sliding seat (51), a flange (83) is provided on the outer side of the bottom of the guide rod (82), the top of the guide rod (82) passes through the second tube shaft (32) and extends into the first tube shaft (31), and first convex strips (84) slidably connected with the first tube shaft (31) are provided on both sides of the part of the guide rod (82) located in the first tube shaft (31).

6. A wastewater circulation treatment equipment according to claim 5, characterized in that: The elastic locking assembly (10) comprises a sleeve (101), wherein the sleeve (101) is sleeved outside the guide rod (82), a pressure plate (102) is fixed to the outer side of the sleeve (101), the bottom surface of the pressure plate (102) is provided with a latching tooth (103) capable of engaging with the upper surface of the third tube shaft (33), the pressure plate (102) is elastically connected to the second tube shaft (32) via a spring (104), and second convex strips (105) slidably connected to the inner wall of the second tube shaft (32) are provided on both sides of the top of the sleeve (101), and a section of straight tooth surface (106) is provided on the outer side surface of the bottom of the second convex strip (105).

7. A wastewater circulation treatment equipment according to claim 6, characterized in that: The stirring assembly (9) comprises a plurality of stirring rods (91) which are arranged parallel to each other and equidistant from top to bottom. Movable grooves (321) are provided on both sides of the second tube shaft (32). The stirring rods (91) on the two stirring assemblies (9) are respectively hinged in the movable grooves (321) on both sides of the second tube shaft (32). The middle parts of the stirring rods (91) are hinged by connecting rods (92). A row of cleaning brushes (93) are fixed on the upper surface of the top stirring rod (91) and the lower surface of the bottom stirring rod (91). The outer surface of one end of the stirring rod (91) located at the bottom and close to the second tube shaft (32) is provided with an arc tooth surface (94) meshing with the straight tooth surface (106).

8. The wastewater circulation treatment equipment according to claim 5, characterized in that: The traction assembly (15) comprises a main suspension rope (151), the lower end of the main suspension rope (151) is fixed to a lower sliding seat (51), the upper end of the main suspension rope (151) is fixed to a connecting block (152), the top of the connecting block (152) is symmetrically fixed with two auxiliary suspension ropes (153), upper sliding grooves (311) are provided on both sides of the first tube shaft (31), and fixed pulleys (154) are rotatably connected in the upper sliding grooves (311) on both sides, and the two auxiliary suspension ropes (153) respectively pass around the two fixed pulleys (154) and are fixed to the edge of the first net cover (4).

9. The wastewater circulation treatment equipment according to claim 1, characterized in that: A water inlet pipe (11) and a drug adding pipe (12) are fixed to the top of the tank body (1), a sewage discharge pipe (13) leading to the periphery of the bottom of the inner cylinder (2) is fixed to one side of the bottom of the tank body (1), and drainage pipes (14) leading to the bottom cavity of the inner cylinder (2) are fixed to both sides of the bottom of the tank body (1).

10. A method for using a wastewater treatment device, according to the wastewater circulation treatment device of claim 1, characterized in that: The following steps are involved: Step 1: The wastewater entering the tank body (1) is first filtered by the first mesh cover (4), and then the driving rod (3) is driven to rotate by the first motor (6), and the driving rod (3) rotates synchronously with the first mesh cover (4), and the filter residue on the surface of the first mesh cover (4) is thrown out to the surroundings under the action of the centrifugal force generated by the rotation of the first mesh cover (4), and falls on the outer periphery of the inner cylinder (2) along the inner wall of the tank body (1); Step 2: the medicine solution and wastewater entering the tank body (1) are mixed, and the stirring assembly (9) is driven by the driving rod (3) to mix and stir the medicine solution and wastewater. After stirring for a period of time, the first motor (6) is stopped and left to stand, so that impurities in the wastewater are flocculated under the action of the medicine solution; Step 3, starting the second motor (7) to drive the second mesh cover (5) to move upwards through the lifting assembly (8), and lifting the flocculants in the inner cylinder (2) upwards under the filtration of the second mesh cover (5); Step 4, the first motor (6) is turned on again to drive the driving rod (3), and the driving rod (3) drives the second mesh cover (5) to rotate, and the flocculants are thrown out to the surroundings under the action of the centrifugal force generated by the rotation of the second mesh cover (5), and fall on the outer periphery of the inner cylinder (2) along the inner wall of the tank body (1); Step 5: When the lifting component (8) moves upward, it can press the elastic locking component (10), so that the stirring components (9) on both sides swing downward synchronously under the action of the elastic locking components (10); Step 6: The elastic locking component (10) is released from the locking of the second pipe shaft (32) by the top pressure of the lifting component (8), and the stirring components (9) on both sides are subjected to the resistance of the wastewater in the tank body (1), so that the second pipe shaft (32) can rotate at a differential speed relative to the first pipe shaft (31) and the second pipe shaft (32). Since the first mesh cover (4) is pulled downward by the pulling component (15), the differential rotation of the stirring component (9) can simultaneously scrape the first mesh cover (4) and the second mesh cover (5) that are close to each other.

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