CN111847802A - Energy-saving and environmentally friendly sewage treatment - Google Patents

Abstract

The energy-saving and environment-friendly sewage treatment device provided by the invention effectively solves the problem that manual cleaning is laborious and laborious in the process of cleaning domestic sewage, and at the same time, the poor working environment is harmful to the human body. The technical solution of the collection is that it includes a box for storing sewage, a mechanical filter device located at the water inlet of the box and used to mechanically filter the water entering the box, located at the water outlet of the mechanical device. There is a sedimentation tank, and on the right of the sedimentation tank are activated sludge tanks, separation tanks, secondary sedimentation tanks, and disinfection tanks. The sedimentation tanks, activated sludge tanks, separation tanks, secondary sedimentation tanks, and disinfection tanks are equipped with The separation device that separates different water layers can effectively purify the domestic sewage to meet the discharge standard after mechanical filtration first, then biological decomposition, and finally disinfection.

Description

Energy-saving and environmentally friendly sewage treatment

technical field

The invention relates to a sewage treatment device, in particular to an energy-saving and environment-friendly sewage processor.

Background technique

Sewage treatment equipment is an industrial equipment that can effectively treat domestic sewage and industrial wastewater in urban areas, avoiding the direct inflow of sewage and pollutants into water areas, and is of great significance to improving the ecological environment, enhancing urban quality and promoting economic development.

Buried sewage treatment equipment is suitable for domestic sewage and similar industrial organic Wastewater, such as organic wastewater treatment in textile, beer, paper, leather, food, chemical and other industries, the main purpose is to treat domestic sewage and similar industrial organic wastewater to meet the water quality requirements for reuse, so that the resources after wastewater treatment can be reused. utilization.

Buried domestic sewage treatment equipment has two series of WSZ-A type modular type and WSZ-F type glass fiber reinforced plastic, with a treatment capacity of 0.5 ~ 50m3/H, a total of more than 30 specifications

WSZ-A type equipment is mainly designed for the treatment of domestic sewage and similar industrial organic sewage. The main treatment method is to use a relatively mature biochemical treatment technology - contact oxidation method. ) primary sedimentation tank; (2) contact oxidation tank; (3) secondary sedimentation tank; (4) disinfection tank, disinfection device; (5) sludge tank; (6) fan room, fan.

The domestic sewage often contains various impurities before entering the primary sedimentation tank, and in the process of filtering the existing impurities, there is often a situation that the impurities are not cleaned in time and the filter screen is blocked. At the same time, when manual cleaning is used, there is a problem of greater harm to the human body, so a device that can automatically clean impurities in domestic sewage and can automatically self-clean is required.

SUMMARY OF THE INVENTION

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an energy-saving and environmentally friendly sewage I processor, which effectively solves the problems that manual cleaning is laborious and laborious in the process of cleaning domestic sewage, and the poor working environment is harmful to the human body. At the same time, self-cleaning can also be completed to collect the intercepted impurities. The technical solution of the solution is that it includes a tank for storing sewage, and a tank located at the water inlet of the tank is used to clean the water entering the tank. The mechanical filtration device for mechanical filtration is equipped with a sedimentation tank at the water outlet of the mechanical device. The right side of the sedimentation tank is equipped with an activated sludge tank, a separation tank, a secondary sedimentation tank, and a disinfection tank. The sedimentation tank, activated sludge tank, separation tank The tank, the secondary sedimentation tank and the disinfection tank are all provided with separation devices for separating different water layers;

The mechanical filtering device comprises a horizontally arranged water passage, and a support frame is respectively provided on the front and rear sides of the water passage, and the support frame on the front and rear sides is provided with a first filter screen and a second filter screen that are connected by longitudinal rotation. The first filter screen and the second filter screen are rotationally connected and the rotational connection parts are arranged in a staggered manner. Between the motor and the first filter screen and the second filter screen, the control device controls the rotating motor to transmit the power to the first filter screen or the second filter screen. The power motor can only drive one filter screen to rotate at the same time. The control device includes the first filter screen or the second filter screen. The front end of the rotating shaft of the filter screen protrudes forward, and the front end of the rotating sleeve is provided with a plurality of positioning grooves arranged at even intervals. The axis is evenly spaced with a plurality of stoppers, the rotating rod is sleeved with a control cylinder, and the rear end of the control cylinder is provided with a plurality of positioning blocks that match the positioning grooves opened on the rotating sleeve. The control cylinder is located at the right end of the positioning block and rotates The blocks on the rod are provided with card grooves that match the blocks, the front end of the groove in the control cylinder is provided with a cylindrical cavity for accommodating the block at the front end of the rotating rod, and the cylindrical cavity at the front end of the control cylinder is provided. The front end of the cavity is provided with a spline slot, and the rotating motor shaft is fixedly connected with a spline shaft that matches the spline slot at the front end of the control cylinder. Control the movement of the front and rear directions of the rotating drum. The support frame is provided with a support device that supports the first filter screen and the second filter screen after moving to the set position, and also includes a collection device for collecting the intercepted impurities. device.

Preferably, the collection device comprises a longitudinally arranged receiving groove which is slidably connected to the upper end of the water passage, the receiving groove is controlled by a longitudinally rotating motor fixedly connected at the front end of the support frame, and a longitudinally arranged conveyor belt is arranged in the receiving groove, A receiving box is fixedly connected to the front end surface of the water passage below the discharge port at the front end of the conveyor belt, and a filter sheet is arranged in the middle of the receiving box. A spray rod protruding upward is fixedly connected, and a spray head is fixedly connected to the upper end of the spray rod.

Preferably, the lower end surface of the water passage is provided with an arc-shaped notch matched with the first filter screen and the second filter screen.

Preferably, the support device includes a lower electric telescopic rod fixedly connected to the lower end of the support frame, a lower sensor for sensing the position of the filter screen, an upper electric telescopic rod fixedly connected to the upper end of the support frame, and a sensor for sensing the position of the filter screen. The upper sensor and the lower electric telescopic rod are located at the support position for the lower end face of the filter screen when the lower end of the filter screen moves to the left end of the arc-shaped notch. The lower sensor is located on the inner side of the support frame at the left end of the lower electric telescopic rod. The upper electric telescopic rod extends out when the filter screen rotates along the rotating part to a set angle with the vertical direction and plays a supporting role for the filter screen.

Preferably, the first filter screen and the second filter screen are respectively provided with a plurality of vertical filter grids in the middle, and the lower end of each filter screen is respectively provided with an arc-shaped material storage slot, and the upper end of each filter screen is provided with a plurality of vertical filter grids. The guide plate is arranged perpendicular to the filter screen, and the lower end of the guide plate is arc-shaped.

Preferably, there are two groups of the mechanical filtering devices, the second group is located on the water passage at the right end of the first group, and the grid gap of the filter mesh in the second group is smaller than the grid gap of the first group.

Preferably, the separation device includes separation frames that are fixedly connected to the sedimentation tank, the activated sludge tank, the separation tank, the secondary sedimentation tank and the disinfection tank, and each separation frame is provided with a plurality of evenly spaced and parallel arranged Rotating plates, one end of each rotating plate protrudes from the box body and gears are fixedly connected to the protruding parts, and the fixedly connected gears on each rotating plate are engaged with each other, and one of the gears is driven by a separation motor that is fixedly connected to the box body. .

Preferably, the driving power source part in the mechanical filtering device is driven by two groups of symmetrically arranged front and rear azimuths.

Preferably, the bottoms of the sedimentation tank, activated sludge tank, separation tank, secondary sedimentation tank, and disinfection tank in the box are respectively provided with a pumping motor at the bottom of the upper and lower parts of the separation device for pumping the water in the tank. .

The beneficial effects of the present invention are: 1. Preliminary mechanical filtration can be performed on the domestic sewage before it enters the sedimentation tank, and large particles contained in the domestic sewage can be filtered out, which is convenient for subsequent processes to be treated;

2. It can automatically filter the water data passing through the filter device in an all-round way, and can automatically switch the filter screen, so that the new filter screen can be replaced after the filter screen has been filtered for a certain period of time;

3. It can automatically clean up the filtered impurities after accumulating to a certain extent;

4. It can automatically collect and uniformly process the impurities collected in the filtration process;

5. The sewage in the sedimentation tank, activated sludge tank, separation tank, secondary sedimentation tank and disinfection tank can be isolated after purification and extracted to the next process or reworked.

Description of drawings

FIG. 1 is an overall schematic diagram of the present invention.

Fig. 2 is a partial enlarged view of region A of the present invention.

FIG. 3 is a schematic diagram of the mechanical filtering device of the present invention.

Fig. 4 is a partial enlarged view of region B in the schematic diagram of the mechanical filtering device of the present invention.

FIG. 5 is a partial enlarged view of the D area in the schematic diagram of the mechanical filtering device of the present invention.

FIG. 6 is a perspective view of a schematic diagram of the mechanical filter device of the present invention.

7 is a partial enlarged view of the C area in a perspective view of a schematic diagram of the mechanical filtering device of the present invention.

FIG. 8 is a schematic diagram of the filter screen of the present invention.

FIG. 9 is a partial cross-sectional view of the filter screen of the present invention.

Fig. 10 is a partial enlarged view of the F region in the partial cross-sectional view of the filter screen of the present invention.

FIG. 11 is a second view of a schematic diagram of the filter screen of the present invention.

FIG. 12 is a partial enlarged view of the H region in the second view angle of the schematic diagram of the filter screen of the present invention.

Figure 13 is a schematic diagram of the separation device of the present invention.

Figure 14 is a schematic diagram of the support device of the present invention.

reference number

1. Box, 2. Sedimentation tank, 3. Activated sludge tank, 4. Separation tank, 5. Secondary sedimentation tank, 6. Disinfection tank, 7. Separation device, 8. Support frame, 9. First filter , 10. Second filter screen, 11. Rotating motor, 12. Control device, 13. Rotating sleeve, 14. Positioning groove, 15. Rotating rod, 16. Stopper, 17. Control cylinder, 18. Positioning block, 19. Card slot, 20. Cylindrical cavity, 21. Spline slot, 22. Spline shaft, 23. Electric push rod, 24. Support device, 25. Collection device, 26. Receiving slot, 27. Longitudinal rotation motor, 28. Conveyor belt, 29. Receiving box, 30. Filter, 31. Water outlet, 32. Spray rod, 33. Spray head, 34. Curved slot, 35. Lower electric telescopic rod, 36. Lower sensor, 37. Upper electric telescopic rod, 38. Upper sensor, 39. Filter grid, 40. Arc storage chute, 41. Guide plate, 42. Separation frame, 43. Rotating plate, 44. Gear, 45. Separation motor .

Detailed ways

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings 1-14.

Embodiment 1, the technical solution of the solution is that it is characterized in that it includes a box body 1 for storing sewage, a mechanical filter device located at the water inlet of the box body 1 for mechanically filtering the water entering the box body 1, There is a sedimentation tank 2 at the outlet 31 of the mechanical device, and on the right of the sedimentation tank 2 is an activated sludge tank 3, a separation tank 4, a secondary sedimentation tank 5, a disinfection tank 6, the sedimentation tank 2, and the activated sludge tank 3 , the separation tank 4, the secondary sedimentation tank 5, and the disinfection tank 6 are all provided with a separation device 7 for separating different water layers;

The mechanical filtering device includes a horizontally arranged water channel, and a support frame 8 is respectively provided on the front and rear sides of the water channel. The filter screen 10, the first filter screen 9 and the second filter screen 10 are rotationally connected and the rotational connection parts are arranged in a staggered manner. The rotating motor 11 is driven, and is located between the rotating motor 11 and the first filter screen 9 and the second filter screen 10 through the control device 12 to control the rotating motor 11 to transmit the power to the first filter screen 9 or the second filter screen 10, The power motor can only drive one filter screen to rotate at the same time. The control device 12 includes a rotating sleeve 13 extending forward from the front end of the rotating shaft of the first filter screen 9. The front end of the rotating sleeve 13 is provided with a plurality of evenly spaced locating grooves 14. The rotating sleeve 13 is sleeved with a rotating rod 15 extending forward from the front end of the rotating shaft. The front end of the rotating rod 15 is arranged with a plurality of blocks 16 evenly spaced along the axis. The rotating rod 15 is sleeved with a control cylinder 17. The control cylinder 17 The rear end is provided with a plurality of positioning blocks 18 which are matched with the positioning grooves 14 opened on the rotating sleeve 13 . The matching slot 19 is located at the front end of the slot 19 in the control cylinder 17 and is provided with a cylindrical cavity 20 for accommodating the stopper 16 at the front end of the rotating rod 15, and the front end of the cylindrical cavity 20 at the front end of the control cylinder 17 is provided with There is a spline slot 21, the rotating shaft of the rotating motor 11 is fixedly connected with a spline shaft 22 that matches the spline slot 21 at the front end of the control cylinder 17, and the control cylinder 17 is fixedly connected to the support frame 8. The front end of the electric push rod 23 is fixed The connected push piece controls the movement of the front and rear directions of the rotating drum. The support frame 8 is provided with a support device 24 that supports the first filter screen 9 and the second filter screen 10 after moving to the set position, and also includes a A collection device 25 for collecting intercepted impurities.

When using this embodiment, the domestic sewage is discharged into the water channel through the drain pipe, and the domestic sewage is filtered by the mechanical filter device and then enters the sedimentation tank 2. The domestic sewage in 2 is separated from the middle into two parts, the upper part is water and floating magazine, and the lower part is the material with higher density of sediment, and the water in the upper part is pumped and injected by the pumping motor. into the activated sludge tank 3, and the lower part is transported to the activated sludge tank 3 through a pumping motor after sand removal, so that the classified transportation can effectively ensure that the settled sediment will not be remixed during the transportation process in the upper part. In water, the pressure of the subsequent process can be reduced, and after sedimentation in the sedimentation tank 2, it enters the activated sludge tank 3. There are various decomposing bacteria in the activated sludge tank 3. The organic pollutants are decomposed. After the domestic sewage is decomposed through the sludge tank, the water will be divided into two layers. The surface of the upper layer of water looks relatively clear, while the lower layer of water is in a mud state. It is separated into upper and lower layers. The clear water in the upper layer is transported to the separation tank 4 in the next process through the pumping pipeline for treatment, while the lower part is re-injected into the sewage transported in the previous process. Activated sludge is used. During the treatment of pool 3, because of the principle, the bacteria cultivated in the sludge are used to decompose the organic matter in the pollutants, and during the decomposition process, it is necessary to supply oxygen to the activated sludge pool 3 to speed up the speed of biological decomposition, and then to the activated sludge pool 3. Further purification is carried out in the separation tank 4 of the next process, mainly to separate the microorganisms contained in the sewage, so that the purified water flows into the next process, and the precipitated microorganisms are re-injected into the previous process, and purification. The latter water enters the secondary sedimentation tank 5 for secondary precipitation, and is separated by the separation device 7, the water in the upper layer is injected into the disinfection tank 6 for disinfection, and the water in the lower layer is re-injected into the previous process to disinfect. The waste water can basically meet the discharge standards for discharge.

The initial working state of the mechanical filter device is that the extension end of the first filter screen 9 extends toward the lower left, and is supported by the support device 24 to prevent the first filter screen 9 from rotating counterclockwise, while the second filter screen 10 extends toward the upper left. And it is supported by the support device 24 located above the support frame 8, and after the domestic sewage enters the water passage, the impurities in the water will be intercepted by the first filter screen 9, and the first filter screen 9 intercepts the set time. The rear control cylinder 17 makes the power motor transmit power to the second filter screen 10 under the action of the electric push rod 23, so that the second filter screen 10 rotates clockwise, and the second filter screen 10 rotates until it touches the first filter screen 10. The filter screen 9 will push the first filter screen 9 to rotate synchronously until the second filter screen 10 stops when it rotates to the initial position of the first filter screen 9. At this time, the support device 24 located below supports the second filter screen 10. To prevent the second filter screen 10 from reversing under the action of water impulse after losing power, the control cylinder 17 transmits power to the first filter screen 9 under the action of the electric push rod 23, and the first filter screen 9 is driven by the power motor. Rotate to the initial position of the second filter screen 10 and support it by the support device 24 at the upper end. Before the first filter screen 9 moves to the initial position of the second filter screen 10, the collection device 25 on the water channel will move to Below the rotating shafts of the first filter screen 9 and the second filter screen 10, the first filter screen 9 is moved to the initial position of the second filter screen 10 under the drive of the power motor, and the impurities collected on the first filter screen 9 are at the same time. Under the action of gravity, it will slide into the collecting device 25 and be collected, and the collecting device 25 will be reset after the collection is completed;

When the control cylinder 17 needs to connect the rotating shafts of the first filter screen 9 and transmit power to the first filter screen 9 and drive the first filter screen 9 to rotate while the second filter screen 10 remains in place, the control cylinder 17 is The electric push rod 23 moves backwards. At this time, the positioning block 18 on the rear end of the control cylinder 17 cooperates with the positioning groove 14 on the front end of the rotating sleeve 13, and the stopper 16 on the rotating rod 15 and the control cylinder 17. The cylindrical cavities 20 are in sliding fit. At this time, when the rotating motor 11 rotates, the first filter screen 9 will rotate synchronously, and when the second filter screen 10 needs to be driven, the first filter screen 9 needs to be kept at the same time. In the original position, the electric push rod 23 is controlled to move forward, and the electric push rod 23 will toggle the control cylinder 17 to move forward synchronously. 14, and the block 16 on the rotating rod 15 cooperates with the slot 19 in the control cylinder 17. At this time, the power motor will transmit power to the second filter screen 10 when it rotates, and when the control During the movement of the cylinder 17 in the front and rear directions, the inter-flower groove at the front end of the control cylinder 17 is always slidably matched with the spline shaft 22 on the rotating motor 11, and the power generated by the rotating motor 11 is transmitted to the filter screen to drive the filter screen. turn.

In the second embodiment, on the basis of the first embodiment, the collecting device 25 includes a longitudinally arranged receiving groove 26 that is slidably connected to the upper end of the water passage. For control, a longitudinally arranged conveyor belt 28 is arranged in the receiving tank 26, a receiving box 29 is fixedly connected to the front end surface of the water passage below the discharge port at the front end of the conveyor belt 28, and a filter sheet 30 is arranged in the middle of the receiving box 29. The receiving box The lower end of 29 is arranged obliquely and is provided with a water outlet 31 at the lowermost end. The middle part of the right end of the receiving groove 26 is fixedly connected with a spray rod 32 extending upward, and the upper end of the spray rod 32 is fixedly connected with a spray head 33.

When this embodiment is in use, when the upper filter screen is rotated clockwise to the initial position of the lower filter screen, the rotating shaft of the longitudinal rotation motor 27 is a threaded shaft, and the receiving groove 26 is connected with the rotating shaft of the longitudinal rotation motor 27 as a threaded shaft Connected, the receiving slot 26 is moved to the lower part of the rotating shaft of the filter screen under the control of the longitudinal rotation motor 27. After the filter screen continues to rotate to the corresponding angle, the impurities collected on the filter screen will flow into the receiving slot under the action of gravity, and the receiving slot 26 The built-in conveyor belt 28 will transport the impurities falling on the conveyor belt 28 to the receiving box 29. After the impurities enter the receiving box 29, the moisture in the impurities will be filtered out from the filter 30 and filtered. In order to prevent impurities on the filter from clogging the filter, after the receiving box 29 is moved to the corresponding position, the spray rod 32 fixedly connected to the receiving tank will pass the spray head 33 to the filter. During the spraying process, the impurities on the filter screen are always washed away, and after the filter screen is sprayed, the longitudinal rotation motor 27 controls the receiving tank 26 to reset.

In the third embodiment, on the basis of the first embodiment, the lower end surface of the water passage is provided with an arc-shaped notch 34 which is matched with the first filter screen 9 and the second filter screen 10 .

When this embodiment is in use, an arc-shaped notch 34 is provided on the lower end surface of the water passage that overlaps with the rotation range of the first filter screen 9 and the second filter screen 10. When the filter screen rotates to the arc-shaped notch 34 Within the range of the end portion, the filter screen and the arc-shaped slot 34 are always kept in a sliding and sealing connection.

Embodiment 4, on the basis of Embodiment 3, the support device 24 includes a lower electric telescopic rod 35 fixedly connected to the lower end of the support frame 8, a lower sensor 36 for sensing the position of the filter screen, and fixedly connected to the support frame 8. The upper electric telescopic rod 37 at the upper end, the upper sensor 38 for sensing the position of the filter screen, the lower electric telescopic rod 35 is located at the lower end of the filter screen when it moves to the left end angle of the arc-shaped slot 34 to support the lower end surface of the filter screen The lower sensor 36 is located on the inner side of the support frame 8 at the left end of the lower electric telescopic rod 35, and the upper electric telescopic rod 37 is located when the filter screen rotates along the rotating part to a set angle with the vertical direction. to support the filter.

When this embodiment is in use, in the initial position, the extended end of the first filter screen 9 protrudes toward the lower left, and the lower electric telescopic rod 35 provided on the support frame 8 located at the right end of the lower end face of the first filter screen 9 is in the extended position. out of the state, and play the role of limiting the counterclockwise rotation of the first filter screen 9, and in the process of the first filter screen 9 rotating clockwise to the initial position of the second filter screen 10, it will first touch the support frame. 8. The upper sensor 38 at the upper end, when the upper sensor 38 is triggered, will control the upper electric telescopic rod 37 to extend and support the first filter screen 9, and will pass through the upper Under the action of the electric telescopic rod 37, it remains in place. When the second filter screen 10 rotates clockwise from the initial position and pushes the first filter screen 9 to synchronize, the second filter screen 10 will first reach the initial position of the first filter screen 9. The lower sensor 36 is touched, and after the lower sensor 36 is touched, the lower electric telescopic rod 35 is controlled to extend and play a supporting role. To prevent the filter from being blocked from rotating, the lower sensor 36 will be triggered during the clockwise rotation of the upper filter, but since the side of the filter at the rear has blocked the outlet of the lower electric telescopic rod 35, the The electric telescopic rod 35 will not extend until the filter screen on the right passes through, and after the lower electric telescopic rod 35 is extended, it will support the filter screen on the right side.

Embodiment 5, on the basis of Embodiment 1, a plurality of vertical filter grids 39 are respectively opened in the middle of the first filter screen 9 and the second filter screen 10, and the lower ends of each filter screen are respectively provided with arc-shaped storage grids. In the material trough 40, the upper end of each filter screen is provided with a plurality of guide plates 41 arranged perpendicular to the filter screen, and the lower end of the guide plate 41 is arc-shaped.

When this embodiment is in use, arc-shaped material storage grooves 40 are respectively provided at the lower end of the filter screen so that the impurities collected in the filter screen will not fall off when the filter screen rotates, and a plurality of guide plates arranged on the filter screen 41 is used to guide the impurities on the filter screen when the filter screen is rotated to a corresponding angle and dumped.

Embodiment 6, on the basis of Embodiment 1, the mechanical filtering devices are divided into two groups, and the second group is located on the water passage at the right end of the first group, and the grid gap of the filter mesh in the second group is smaller than that of the first group of grids. gap.

When this embodiment is used, two sets of different grids are set for grading filtering. The first group on the left is used to filter large-volume impurities, while the second group on the right is smaller than the first group because the grid gap is smaller than that of the first group. And the large volume of impurities has been filtered, so the filter pressure can be effectively reduced during the secondary filtration, and the first group will not be easily blocked due to the large gap.

Embodiment 7, on the basis of Embodiment 1, the separation device 7 includes a separation frame 42 fixedly connected to the sedimentation tank 2, the activated sludge tank 3, the separation tank 4, the secondary sedimentation tank 5, and the disinfection tank 6, respectively. Each separating frame 42 is provided with a plurality of rotating plates 43 that are evenly spaced and arranged in parallel. One end of each rotating plate 43 extends out of the box body 1 and a gear 44 is fixedly connected to the projecting part, and each rotating plate 43 is fixedly connected. The gears 44 are meshed with each other, and one of the gears 44 is driven by the separation motor 45 fixedly connected to the box body 1 .

When this embodiment is in use, the separation frame 42 is sealed and fixedly connected with the inner side walls of each pool. When each rotary plate 43 is kept horizontal, each rotary plate 43 plays the role of separating the upper and lower parts of each pool, and each rotary plate 43 The protruding gears 44 are meshed with each other in turn, so that when one of the gears 44 is driven by the motor, all the gears 44 will rotate synchronously. The rotating directions of the rotating plates 43 are opposite, so when each rotating plate 43 rotates synchronously, it will not cause large fluctuations to the water body, so as not to damage the water body after sedimentation, and prevent the water body from being stirred again and mixed.

In the eighth embodiment, on the basis of the first embodiment, the driving power source parts in the mechanical filter device are driven by two groups of symmetrically arranged front and rear azimuths.

When this embodiment is in use, in order to prevent the unidirectional force caused by the rotation of the filter screen, resulting in uneven force and damage to the material and thus affecting the service life, the driving power source is set to be driven in a front and rear symmetrical mode.

Embodiment 9, on the basis of Embodiment 1, the sedimentation tank 2, the activated sludge tank 3, the separation tank 4, the secondary sedimentation tank 5, and the disinfection tank 6 in the box 1 are located in the upper and lower parts of the separation device 7. The bottom is respectively provided with a pumping motor for pumping the water in the water tank to the designated position.

When this embodiment is in use, after the sewage in each pool is separated by the separation device 7, the water above the separation device 7 will be extracted first, and the extracted place is located in the pool in the next process. The water located under the separation device 7, except the activated sludge in the activated sludge tank 3, will be pumped to the previous process or directly discharged, and the separation device 7 is to ensure that the water in the upper layer will not be pumped. Mixing with the water below leads to stratification disorder, effectively increasing the filtration efficiency.

Claims (9)

1. The energy-saving and environment-friendly sewage treatment device is characterized by comprising a box body (1) for storing sewage, a mechanical filtering device which is positioned at a water inlet of the box body (1) and is used for mechanically filtering water entering the box body (1), a sedimentation tank (2) which is positioned at a water outlet (31) of the mechanical device, an activated sludge tank (3), a separation tank (4), a secondary sedimentation tank (5) and a disinfection tank (6) which are arranged on the right side of the sedimentation tank (2), wherein the sedimentation tank (2), the activated sludge tank (3), the separation tank (4), the secondary sedimentation tank (5) and the disinfection tank (6) are respectively internally provided with a separating device (7) for separating different water layers;

the mechanical filtering device comprises a water passage which is transversely arranged, supporting frames (8) are respectively arranged on the front side surface and the rear side surface of the water passage, a first filter screen (9) and a second filter screen (10) which are longitudinally and rotatably connected are arranged on the supporting frames (8) on the front side surface and the rear side surface, the first filter screen (9) and the second filter screen (10) are rotatably connected and the rotatably connected parts are staggered, the first filter screen (9) and the second filter screen (10) are driven by a rotating motor (11) which is fixedly connected on the front end surface of the front side supporting frame (8), the rotating motor (11) is controlled by a control device (12) to transmit power to the first filter screen (9) or the second filter screen (10) between the rotating motor (11) and the first filter screen (9) and the second filter screen (10), and the power motor can drive only one filter screen to rotate simultaneously, the control device (12) comprises a first filter screen (9) and a rotating sleeve (13) extending forwards from the front end of a rotating shaft, a plurality of positioning grooves (14) uniformly arranged at intervals are formed in the front end of the rotating sleeve (13) backwards, a rotating rod (15) extending forwards from the front end of the rotating shaft is sleeved in the rotating sleeve (13), a plurality of stop blocks (16) are uniformly arranged at intervals along the axis at the front end of the rotating rod (15), a control cylinder (17) is sleeved on the rotating rod (15), a plurality of positioning blocks (18) matched with the positioning grooves (14) formed in the rotating sleeve (13) are arranged at the rear end of the control cylinder (17), a clamping groove (19) matched with the stop blocks (16) is formed between the right end of the positioning block (18) and the stop blocks (16) arranged on the rotating rod (15) in the control cylinder (17), a cylindrical cavity (20) used for containing the stop blocks (16) at the front end of the rotating rod (15) is, cylindrical cavity (20) front end that is located control cylinder (17) front end is equipped with spline groove (21), between spline groove (21) of fixedly connected with and control cylinder (17) front end in rotation motor (11) pivot matched with integral key shaft (22), the removal in the front and back position of a control cylinder is controlled through electric putter (23) front end fixed connection's of fixed connection on support frame (8) promotion piece to control cylinder (17), be equipped with on support frame (8) and possess and carry out strutting arrangement (24) that support after removing the settlement position to first filter screen (9), second filter screen (10), still including being used for carrying out collection's collection device (25) to the impurity of interception.

2. The energy-saving and environment-friendly sewage treatment device according to claim 1, wherein the collecting device (25) comprises a longitudinally-arranged receiving tank (26) which is transversely slidably connected to the upper end of the water passage, the receiving tank (26) is controlled by a longitudinally-rotating motor (27) fixedly connected to the front end of the support frame (8), a longitudinally-arranged conveying belt (28) is arranged in the receiving tank (26), a receiving tank (29) is fixedly connected to the front end surface of the water passage below a discharge port at the front end of the conveying belt (28), a filter sheet (30) is arranged in the middle of the receiving tank (29), a water outlet (31) is formed in the lower end of the receiving tank (29) in an inclined manner and is located at the lowest end, a spray rod (32) extending upwards is fixedly connected to the middle of the right end of the receiving tank (26), and a spray head.

3. The sewage treatment device of claim 1, wherein the lower end surface of the water passage is provided with an arc-shaped notch (34) matched with the first filter screen (9) and the second filter screen (10).

4. The sewage treatment device with energy conservation and environmental protection as claimed in claim 3, characterized in that the supporting device (24) comprises a lower electric telescopic rod (35) fixedly connected with the lower end of the supporting frame (8), a lower inductor (36) used for inducing the position of the filter screen, fixed connection is at last electric telescopic handle (37) of support frame (8) upper end, last inductor (38) for responding to the filter screen position, electric telescopic handle (35) are located down and are used for carrying out the support position to terminal surface under the filter screen when the filter screen lower extreme moves arc notch (34) left end position angle, inductor (36) are located down on support frame (8) medial surface of electric telescopic handle (35) left end down, go up electric telescopic handle (37) and be located the filter screen along rotate the position and stretch out and play the supporting role to the filter screen when being the settlement angle between the vertical direction.

5. The energy-saving and environment-friendly sewage treatment device according to claim 1, wherein a plurality of vertical filter grids (39) are respectively arranged in the middle of the first filter screen (9) and the second filter screen (10), an arc-shaped storage tank (40) is respectively arranged at the lower end of each filter screen, a plurality of guide plates (41) which are perpendicular to the filter screens are arranged at the upper ends of the filter screens, and the lower ends of the guide plates (41) are arc-shaped.

6. The energy-saving and environment-friendly sewage treatment device as claimed in claim 1, wherein the mechanical filtering devices are two groups, the second group is positioned on the water passage at the right end of the first group, and the grid gaps of the filtering net in the second group are smaller than those of the first group.

7. The energy-saving and environment-friendly sewage treatment device according to claim 1, wherein the separation device (7) comprises separation frames (42) fixedly connected to the sedimentation tank (2), the activated sludge tank (3), the separation tank (4), the secondary sedimentation tank (5) and the disinfection tank (6) respectively, a plurality of rotating plates (43) which are uniformly spaced and arranged in parallel are arranged in each separation frame (42), one end of each rotating plate (43) extends out of the box body (1) and is fixedly connected with a gear (44) at the extending part, the gears (44) fixedly connected to each rotating plate (43) are meshed with each other, and one gear (44) is driven by a separation motor (45) fixedly connected to the box body (1).

8. The energy-saving and environment-friendly sewage treatment device according to claim 1, wherein the driving power source part in the mechanical filtering device is two groups of common driving which are symmetrically arranged in front and back directions.

9. The energy-saving and environment-friendly sewage treatment device according to claim 1, characterized in that the bottoms of the upper and lower parts of the separation device (7) in the sedimentation tank (2), the activated sludge tank (3), the separation tank (4), the secondary sedimentation tank (5) and the disinfection tank (6) in the box body (1) are respectively provided with a pumping motor at a designated position for pumping water in the water tank.

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