Liquid medicine premixing device and sewage treatment device comprising same

Abstract

The invention belongs to the technical field of sewage treatment, particularly relates to a liquid medicine premixing device and a sewage treatment device comprising the same, and provides the following scheme aiming at the problems that an electronic sensor has the risk of failure, cannot be suitable for a workshop with strict requirements on no electronic interference and failure safety and is relatively high in automatic manufacturing cost. Comprising a premixing module, the premixing module comprises a fixing frame, a mixing tank is fixed to the inner wall of the fixing frame, a special-shaped connecting pipe and a driving motor are arranged at the top of the mixing tank, the outlet end of the special-shaped connecting pipe is fixedly connected to the mixing tank, and the output end of the driving motor is fixedly connected with a deviation rotating disc. According to the liquid medicine premixing device and the sewage treatment device comprising the liquid medicine premixing device, the dosing amount and the stirring speed are precisely coordinated through mechanical hard connection, the failure of an electronic sensor is avoided, the manufacturing cost is reduced, meanwhile, the liquid outlet is closed during stirring, the mixed medicine automatically flows out after stopping, and the next batch is quickly joined.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a liquid medicine premixing device and a sewage treatment device containing the same. Background Art

[0002] Wastewater treatment is the process of purifying wastewater to ensure it meets the required water quality for discharge into a water body or reuse. It is widely used in various fields, including construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscapes, healthcare, and catering, and is increasingly becoming part of everyday life. Basic wastewater treatment methods can be categorized as physical, chemical, and biological, and typically include pretreatment, primary treatment, secondary treatment, and advanced treatment. With continuous technological advancements and innovations, many new technologies and methods have emerged in the wastewater treatment field, such as advanced oxidation processes, membrane bioreactors, and magnetic separation technology. The application of these new technologies and methods has further improved the efficiency and effectiveness of wastewater treatment.

[0003] In the existing technology, when controlling parameters such as the dosage and stirring speed of the liquid pre-mixing device, electronic control is usually adopted throughout the process. Due to the failure risk of electronic sensors, it is not suitable for workshops with strict requirements on no electronic interference and fault safety. At the same time, the cost of automated manufacturing is relatively high. Summary of the Invention

[0004] The present invention discloses a liquid medicine premixing device and a sewage treatment device containing the same, aiming to solve the technical problems in the background technology that electronic sensors have the risk of failure and cannot be applied to workshops with strict requirements on no electronic interference and fault safety, and the automated manufacturing cost is relatively high.

[0005] The liquid medicine premixing device proposed in the present invention includes a premixing module, which includes a fixed frame, a mixing tank is fixed on the inner wall of the fixed frame, a special-shaped connecting pipe and a driving motor are provided on the top of the mixing tank, the outlet end of the special-shaped connecting pipe is fixedly connected to the mixing tank, and the output end of the driving motor is fixedly connected to an offset turntable, the bottom of the offset turntable is fixedly connected to a rotating rod, the outside of the rotating rod is fixedly connected to a spoiler, and the bottom inner wall of the mixing tank is movably connected to a rotating seat.

[0006] In a preferred solution, a plurality of liquid outlets are equidistantly provided on the rotating seat at a circle, a sliding groove is provided above each of the liquid outlets, a sliding block is slidably connected in each of the sliding grooves, and the bottom of the rotating rod is fixedly connected to the connecting seat, the bottom of the connecting seat is fixedly connected to the rotating seat, a plurality of sliding parts are slidably connected to the bottom of the connecting seat, the plurality of sliding parts are equidistantly distributed at a circle, both sides of the plurality of sliding parts are fixedly connected to fixed rods, the outside of the plurality of fixed rods are surrounded by springs, one end of the plurality of springs is fixedly connected to the connecting seat, and the other end is fixedly connected to the corresponding sliding part.

[0007] In a preferred embodiment, the inner walls of both ends of the special-shaped connecting tube are fixedly connected with a one-way valve, and a connecting rod is movable on the outside of the offset turntable, and the end of the connecting rod away from the offset turntable is movably connected to a movable rod, and the inner wall of the special-shaped connecting tube is slidably connected to a piston part, and the end of the movable rod away from the connecting rod is fixedly connected to the piston part.

[0008] By providing a pre-mixing module, the medicine is connected to one end of the special-shaped connecting pipe, and the movable rod and the piston are driven to reciprocate by the driving motor. The pressure difference is used to pump the medicine into the mixing tank through two one-way valves. At the same time, the rotating rod drives the connecting seat and the rotating seat to rotate. Multiple sliding parts compress the spring to slide outward under the action of centrifugal force, driving the sliding block to block the liquid outlet. After the pre-mixing is completed, the spring rebounds and drives the sliding part to reset, so that the medicine liquid flows into the main box through the liquid outlet. By accurately coordinating the dosage and the stirring speed through mechanical hard connection, the failure of the electronic sensor is avoided and the manufacturing cost is reduced. At the same time, the liquid outlet of the mixing tank remains closed during stirring. After stopping, the mixed medicine automatically flows out, quickly connecting to the next batch and shortening the cycle.

[0009] A sewage treatment device includes the liquid premixing device as described above, and also includes a main box body, a premixing module is arranged on the top of the main box body, a mounting plate is fixed on the main box body, the mounting plate and the bottom inner wall of the main box body are provided with the same flow-pushing module, and a monitoring module is provided on one side of the main box body, the flow-pushing module includes two fixed seats, and the two fixed seats are provided with a plurality of circumferentially equidistant slide grooves, long rods are slidably connected in the plurality of slide grooves, the outsides of the plurality of long rods are fixedly connected to mounting parts, one side of the plurality of mounting parts is fixedly connected to a flow-pushing plate, the monitoring module includes a mounting frame and a photoelectric sensor, and the mounting frame is fixed to one side of the main box body.

[0010] In a preferred solution, the mounting plate frame is provided with two symmetrical circular holes, both of which are fixedly connected to fixed platforms, and the ends of the multiple long rods away from the fixed seats are movably connected to the corresponding fixed platforms, the exteriors of the two fixed platforms are movably connected to movable platforms, the outer walls of the two movable platforms are fixedly connected to gear ring 2, and the two movable platforms are provided with multiple arc grooves equidistantly around the circumference, and the multiple arc grooves are fixedly connected to the corresponding long rods.

[0011] In a preferred solution, the bottom of the mounting plate is slidably connected to a sliding gear rod, and the two gear rings are engaged with the sliding gear rod. A rotating hole is opened on the mounting plate, and a rotating shaft is movable in the rotating hole. A gear is fixedly connected to the outside of the rotating shaft, and the gear is engaged with the sliding gear rod.

[0012] In a preferred solution, the mounting plate is movably connected to a swinging member, one side of the swinging member is fixedly connected to a gear ring 1, the gear ring 1 is engaged with the gear, and a fixing hole is opened on the mounting plate, a universal motor is fixedly connected in the fixing hole, the output end of the universal motor is fixedly connected to a connecting member, the end of the connecting member away from the universal motor is fixedly connected to a sliding seat, and the sliding seat slides on the inner wall of the swinging member.

[0013] By providing a flow-pushing module and rotating the connecting part through a universal motor, the swinging part is forced to drive the gear ring 1 to swing back and forth, and the sliding gear rod is driven by the gear engagement, so that the movable platforms on both sides rotate back and forth through the gear ring 2, forcing the sliding rod to slide back and forth in the arc groove, driving the long rod, and making the flow-pushing plate reciprocate to push the water flow, thereby accelerating the reaction and avoiding high-speed stirring to destroy the flocculation after the sewage reaction.

[0014] In a preferred solution, a mounting base is fixed on one side of the mounting frame, a roller is movable on the mounting base, and a servo motor is fixedly connected to one side of the mounting base, the output end of the servo motor is fixedly connected to one end of the mounting base, a guide groove is provided on the roller, a cable is arranged in the guide groove, and the end of the cable away from the roller is fixedly connected to the photoelectric sensor.

[0015] In a preferred solution, a mounting rod is fixedly connected to the bottom of the mounting frame, and a movable hole is opened on the mounting rod, a pulley is movable in the movable hole, and the cable slides outside the pulley.

[0016] In a preferred solution, a primary filter box is fixedly connected to the top of the main box body, a liquid inlet is opened on the top of the primary filter box, and a filter plate is fixedly connected to the inner wall of the primary filter box.

[0017] By setting up a monitoring module, the servo motor rotates the drum, and the cable is unwound to drive the photoelectric sensor to move to a specified height, so as to monitor the mud level of the flocculent sediment. This can avoid errors caused by cable overlap or misalignment and improve the stability of the sensor.

[0018] From the above, it can be seen that the liquid medicine premixing device and the sewage treatment device containing the same provided by the present invention use the premixing module to accurately coordinate the dosage and the stirring speed through mechanical hard connection, thereby avoiding failure of electronic sensors and reducing manufacturing costs. At the same time, the liquid outlet of the mixing tank remains closed during stirring, and the mixed agent automatically flows out after stopping, quickly connecting to the next batch and shortening the cycle. In addition, the flow-pushing module can avoid high-speed stirring from destroying the flocculation after the sewage reaction. At the same time, the monitoring module can avoid errors caused by overlapping or misalignment of cables, thereby improving the stability of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the liquid medicine premixing device proposed in the present invention; Figure 2 This is a schematic diagram of the internal structure of the mixing tank of the liquid medicine premixing device proposed in the present invention; Figure 3 This is a schematic structural diagram of the connection seat of the liquid medicine pre-mixing device proposed in the present invention; Figure 4 This is a schematic diagram of the overall structure of the sewage treatment device proposed in the present invention; Figure 5 This is a schematic diagram of the overall internal structure of the sewage treatment device proposed in the present invention; Figure 6 This is a partial structural diagram of the flow-pushing module of the sewage treatment device proposed in the present invention; Figure 7 This is a structural diagram of the monitoring module of the sewage treatment device proposed in the present invention.

[0020] In the figure: 1. Main box; 2. Mounting plate frame; 3. Primary filter box; 4. Liquid inlet; 5. Filter plate; 6. Pre-mixing module; 601. Fixed frame; 602. Mixing tank; 603. Drive motor; 604. Special-shaped connecting pipe; 605. Offset turntable; 606. Connecting rod; 607. Movable rod; 608. Piston; 609. One-way valve; 610. Rotating rod; 611. Spoiler; 612. Rotating seat; 613. Connecting seat; 614. Sliding member; 615. Fixed rod; 616. Spring; 617. Sliding block; 7. Flow-pushing module; 701. Fixed seat; 702. Long rod ;703, mounting part;704, push plate;705, swing part;706, gear ring 1;707, universal motor;708, connecting part;709, sliding seat;710, sliding gear rod;711, rotating shaft;712, gear;713, fixed platform;714, movable platform;715, gear ring 2;716, arc groove;717, sliding rod;8, monitoring module;801, mounting frame;802, mounting seat;803, roller;804, guide groove;805, servo motor;806, cable;807, mounting rod frame;808, pulley;809, photoelectric sensor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] The liquid medicine premixing device and the sewage treatment device containing the same disclosed in the present invention are mainly used in scenes where electronic sensors have the risk of failure and cannot be applied to workshops with strict requirements on no electronic interference and fault safety, and where the cost of automated manufacturing is high.

[0023] Reference Figure 1-Figure 3The liquid premixing device includes a premixing module 6, which includes a fixed frame 601. A mixing tank 602 is fixed to the inner wall of the fixed frame 601. A special-shaped connecting pipe 604 and a driving motor 603 are provided on the top of the mixing tank 602. The outlet end of the special-shaped connecting pipe 604 is fixedly connected to the mixing tank 602, and the output end of the driving motor 603 is fixedly connected to a deflecting turntable 605. The bottom of the deflecting turntable 605 is fixedly connected to a rotating rod 610. The outside of the rotating rod 610 is fixedly connected to a spoiler 611. The bottom inner wall of the mixing tank 602 is movably connected to a rotating seat 612.

[0024] Reference Figure 1 、 Figure 2 and Figure 3 , a plurality of liquid outlets are provided on the rotating seat 612 at equal intervals on the circumference, a sliding groove is provided above the plurality of liquid outlets, a sliding block 617 is slidably connected in the plurality of sliding grooves, and the bottom of the rotating rod 610 is fixedly connected to the connecting seat 613, the bottom of the connecting seat 613 is fixedly connected to the rotating seat 612, and the bottom of the connecting seat 613 is slidably connected to a plurality of sliding members 614, and the plurality of sliding members 614 are circumferentially equidistantly distributed, and both sides of the plurality of sliding members 614 are fixedly connected to fixed rods 615, and the outside of the plurality of fixed rods 615 is surrounded by a spring 616, one end of the plurality of springs 616 is fixedly connected to the connecting seat 613, and the other end is fixedly connected to the corresponding sliding member 614.

[0025] Reference Figure 1 、 Figure 2 and Figure 3 The inner walls of both ends of the special-shaped connecting tube 604 are fixedly connected with a one-way valve 609, and the outside of the offset turntable 605 is movably provided with a connecting rod 606, and the end of the connecting rod 606 away from the offset turntable 605 is movably connected to a movable rod 607, and the inner wall of the special-shaped connecting tube 604 is slidably connected with a piston part 608, and the end of the movable rod 607 away from the connecting rod 606 is fixedly connected to the piston part 608.

[0026] In a specific application scenario, the medicine is connected to one end of the special-shaped connecting pipe 604, the driving motor 603 is started to rotate the offset turntable 605, and the movable rod 607 and the piston 608 are driven to reciprocate through the connecting rod 606. The medicine is pumped into the special-shaped connecting pipe 604 through the one-way valve 609 by the pressure difference, and then pumped into the mixing tank 602 through another one-way valve 609. At the same time, the rotating rod 610 rotates with the offset turntable 605, driving the connecting seat 613 and the rotating seat 612 to rotate. The multiple sliding members 614 compress the spring 616 under the action of centrifugal force and slide outward. The movement drives the sliding block 617 to block the liquid outlet, and the rotating rod 610 drives the spoiler 611 to stir the liquid in the mixing tank 602. After the pre-mixing is completed, the drive motor 603 is turned off, and the spring 616 rebounds and drives the sliding member 614 to reset, so that the liquid flows into the main box 1 through the liquid outlet. By accurately coordinating the dosage and the stirring speed through mechanical hard connection, the failure of the electronic sensor is avoided and the manufacturing cost is reduced. At the same time, the liquid outlet of the mixing tank 602 remains closed during stirring. After stopping, the mixed medicine automatically flows out, and the next batch is quickly connected to shorten the cycle.

[0027] Reference Figure 4-Figure 7 , a sewage treatment device includes the liquid premixing device as described above, and also includes a main box body 1, a premixing module 6 is arranged on the top of the main box body 1, a mounting plate frame 2 is fixed on the main box body 1, and the mounting plate frame 2 and the bottom inner wall of the main box body 1 are provided with the same flow pushing module 7, and a monitoring module 8 is provided on one side of the main box body 1, the flow pushing module 7 includes two fixed seats 701, and the two fixed seats 701 are provided with a plurality of circumferentially equidistant slides, and long rods 702 are slidably connected in the plurality of slides, and the outsides of the plurality of long rods 702 are fixedly connected with mounting parts 703, and one side of the plurality of mounting parts 703 is fixedly connected with a flow pushing plate 704, the monitoring module 8 includes a mounting frame 801 and a photoelectric sensor 809, and the mounting frame 801 is fixed to one side of the main box body 1.

[0028] Reference Figure 4 、 Figure 5 and Figure 6 Two symmetrical circular holes are provided on the mounting plate frame 2, and a fixed platform 713 is fixedly connected to each of the two circular holes, and one end of a plurality of long rods 702 away from the fixed seat 701 is movably connected to the corresponding fixed platform 713, and the outside of the two fixed platforms 713 is movably connected to a movable platform 714, and the outer walls of the two movable platforms 714 are fixedly connected to a gear ring 2 715, and a plurality of arc grooves 716 are equidistantly provided on the two movable platforms 714 at a circumferential distance, and the plurality of arc grooves 716 are fixedly connected to the corresponding long rods 702.

[0029] Reference Figure 4 、 Figure 5 and Figure 6The bottom of the mounting plate frame 2 is slidably connected to a sliding gear rod 710, and the two gear rings 715 are engaged with the sliding gear rod 710. A rotating hole is opened on the mounting plate frame 2, and a rotating shaft 711 is movable in the rotating hole. The outside of the rotating shaft 711 is fixedly connected to a gear 712, and the gear 712 is engaged with the sliding gear rod 710.

[0030] Reference Figure 4 、 Figure 5 and Figure 6 A swinging member 705 is movably connected to the mounting plate frame 2, and a gear ring 706 is fixedly connected to one side of the swinging member 705. The gear ring 706 and the gear 712 are engaged with each other, and a fixing hole is opened on the mounting plate frame 2. A universal motor 707 is fixedly connected in the fixing hole. The output end of the universal motor 707 is fixedly connected to a connecting member 708, and the end of the connecting member 708 away from the universal motor 707 is fixedly connected to a sliding seat 709, and the sliding seat 709 slides on the inner wall of the swinging member 705.

[0031] In a specific application scenario, the universal motor 707 rotates the connecting part 708, forcing the swinging part 705 to drive the gear ring 1 706 to swing back and forth, and the gear 712 engages to drive the sliding gear rod 710, so that the movable platforms 714 on both sides rotate back and forth through the gear ring 2 715, forcing the sliding rod 717 to slide back and forth in the arc groove 716, driving the long rod 702, so that the flow-pushing plate 704 moves back and forth to push the water flow, accelerating the reaction while avoiding high-speed stirring to destroy the flocculent flocs after the sewage reaction.

[0032] Reference Figure 4 、 Figure 5 and Figure 7 A mounting base 802 is fixed on one side of the mounting frame 801, and a roller 803 is movable on the mounting base 802. A servo motor 805 is fixedly connected to one side of the mounting base 802, and the output end of the servo motor 805 is fixedly connected to one end of the mounting base 802. A guide groove 804 is provided on the roller 803, and a cable 806 is arranged in the guide groove 804. The end of the cable 806 away from the roller 803 is fixedly connected to the photoelectric sensor 809.

[0033] Reference Figure 4 、 Figure 5 and Figure 7 The bottom of the mounting frame 801 is fixedly connected to a mounting rod 807 , and a movable hole is opened on the mounting rod 807 , a pulley 808 is movable in the movable hole, and the cable 806 slides on the outside of the pulley 808 .

[0034] Reference Figure 4 、 Figure 5 and Figure 7 The top of the main box body 1 is fixedly connected to the primary filter box 3, the top of the primary filter box 3 is provided with a liquid inlet 4, and the inner wall of the primary filter box 3 is fixedly connected to a filter plate 5.

[0035] In a specific application scenario, the servo motor 805 rotates the drum 803, and the unwinding cable 806 drives the photoelectric sensor 809 to move to a specified height to monitor the mud level of the flocculent sediment. This can avoid errors caused by overlapping or misalignment of the cable 806, thereby improving the stability of the sensor.

[0036] Working principle: sewage is added to the primary filter box 3 through the liquid inlet 4, solid matter is filtered out through the filter plate 5 for preliminary filtration, the medicine is connected to one end of the special-shaped connecting pipe 604, the drive motor 603 is started to rotate the offset turntable 605, and the movable rod 607 and the piston 608 are driven to reciprocate through the connecting rod 606. The medicine is drawn into the special-shaped connecting pipe 604 through the one-way valve 609 by the pressure difference, and then pumped into the mixing tank 602 through another one-way valve 609. At the same time, the rotating rod 610 rotates with the offset turntable 605, driving the connecting seat 613 and the rotating seat 612 to rotate. Multiple sliding parts 614 compress the spring 616 under the action of centrifugal force to slide outward, driving the sliding block 617 to block the liquid outlet, and the rotating rod 610 drives the spoiler 611 to pump the medicine in the mixing tank 602. After stirring and premixing is completed, the driving motor 603 is turned off, and the spring 616 rebounds to drive the sliding member 614 to reset, so that the medicine flows into the main box 1 through the liquid outlet, and then the universal motor 707 is started to rotate the connecting member 708, driving the sliding seat 709 to slide on the inner wall of the swinging member 705, forcing the swinging member 705 to drive the gear ring 1 706 to swing back and forth, and the sliding gear rod 710 is driven by the engagement of the gear 712, so that the movable platforms 714 on both sides rotate back and forth through the gear ring 2 715, forcing the sliding rod 717 to slide back and forth in the arc groove 716, driving the long rod 702, so that the flow-pushing plate 704 reciprocates to promote the water flow, and the servo motor 805 is started to rotate the drum 803, and the unwinding cable 806 drives it to drive the photoelectric sensor 809 to move to the specified height to monitor the mud level of the flocculated sediment.

[0037] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A liquid medicine premixing device, comprising a premixing module (6), characterized in that: The pre-mixing module (6) comprises a fixing frame (601), the inner wall of the fixing frame (601) is connected to a mixing tank (602) via bolts, a special-shaped connecting pipe (604) and a driving motor (603) are provided on the top of the mixing tank (602), the outlet end of the special-shaped connecting pipe (604) is fixedly connected to the mixing tank (602), and the output end of the driving motor (603) is fixedly connected to a deflecting turntable (605), the bottom of the deflecting turntable (605) is fixedly connected to a rotating rod (610), the outside of the rotating rod (610) is fixedly connected to a spoiler (611), and the bottom inner wall of the mixing tank (602) is movably connected to a rotating seat (612).

2. The liquid medicine premixing device according to claim 1, characterized in that: The rotating seat (612) is provided with a plurality of liquid outlets equidistantly around the circumference, and a sliding groove is provided above each of the plurality of liquid outlets. Sliding blocks (617) are slidably connected in each of the plurality of sliding grooves, and the bottom of the rotating rod (610) is fixedly connected to the connecting seat (613), the bottom of the connecting seat (613) is fixedly connected to the rotating seat (612), and the bottom of the connecting seat (613) is slidably connected to a plurality of sliding members (614), the plurality of sliding members (614) are equidistantly distributed around the circumference, both sides of the plurality of sliding members (614) are fixedly connected to fixed rods (615), the outside of the plurality of fixed rods (615) is surrounded by a spring (616), one end of each of the plurality of springs (616) is fixedly connected to the connecting seat (613), and the other end is fixedly connected to the corresponding sliding member (614).

3. The liquid medicine premixing device according to claim 2, characterized in that: One-way valves (609) are fixedly connected to the inner walls of both ends of the special-shaped connecting tube (604), and the outside of the offset turntable (605) is rotatably connected to a connecting rod (606) via a bearing, and one end of the connecting rod (606) away from the offset turntable (605) is movably connected to a movable rod (607), and the inner wall of the special-shaped connecting tube (604) is slidably connected to a piston member (608), and one end of the movable rod (607) away from the connecting rod (606) is fixedly connected to the piston member (608).

4. A sewage treatment device comprising the liquid premixing device according to any one of claims 1 to 3, characterized in that: The invention also includes a main box (1), a premixing module (6) is arranged on the top of the main box (1), a mounting plate frame (2) is connected to the main box (1) by bolts, a same flow-pushing module (7) is arranged on the bottom inner wall of the mounting plate frame (2) and the main box (1), and a monitoring module (8) is arranged on one side of the main box (1), the flow-pushing module (7) includes two fixing seats (701), and the two fixing seats (701) are each provided with a plurality of circumferentially equidistant sliding grooves, a long rod (702) is slidably connected in the plurality of sliding grooves, the exteriors of the plurality of long rods (702) are each fixedly connected to a mounting member (703), and one side of the plurality of mounting members (703) is each fixedly connected to a flow-pushing plate (704), the monitoring module (8) includes a mounting frame (801) and a photoelectric sensor (809), and the mounting frame (801) is connected to one side of the main box (1) by bolts.

5. The sewage treatment device according to claim 4, characterized in that: The mounting plate frame (2) is provided with two symmetrical circular holes, and a fixed platform (713) is fixedly connected in each of the two circular holes, and one end of a plurality of long rods (702) away from the fixed seat (701) is movably connected to the corresponding fixed platform (713), and the exterior of the two fixed platforms (713) is movably connected to a movable platform (714), and the outer walls of the two movable platforms (714) are fixedly connected to a gear ring 2 (715), and a plurality of arc grooves (716) are equidistantly provided on the circumference of the two movable platforms (714), and the plurality of arc grooves (716) are fixedly connected to the corresponding long rods (702).

6. The sewage treatment device according to claim 5, characterized in that: The bottom of the mounting plate frame (2) is slidably connected to a sliding gear rod (710), and the two gear rings (715) are meshed with the sliding gear rod (710). A rotating hole is opened on the mounting plate frame (2), and a rotating shaft (711) is rotatably connected in the rotating hole through a bearing. The outside of the rotating shaft (711) is fixedly connected to a gear (712), and the gear (712) and the sliding gear rod (710) are meshed with each other.

7. The sewage treatment device according to claim 6, characterized in that: The mounting plate frame (2) is movably connected to a swinging member (705), one side of the swinging member (705) is fixedly connected to a gear ring (706), the gear ring (706) and the gear (712) are meshed with each other, and a fixing hole is opened on the mounting plate frame (2), a universal motor (707) is fixedly connected in the fixing hole, an output end of the universal motor (707) is fixedly connected to a connecting member (708), an end of the connecting member (708) away from the universal motor (707) is fixedly connected to a sliding seat (709), and the sliding seat (709) slides on the inner wall of the swinging member (705).

8. The sewage treatment device according to claim 4, characterized in that: One side of the mounting frame (801) is connected to a mounting seat (802) via bolts, a roller (803) is rotatably connected to the mounting seat (802) via a bearing, and a servo motor (805) is fixedly connected to one side of the mounting seat (802), an output end of the servo motor (805) is fixedly connected to one end of the mounting seat (802), a guide groove (804) is provided on the roller (803), a cable (806) is provided in the guide groove (804), and an end of the cable (806) away from the roller (803) is fixedly connected to a photoelectric sensor (809).

9. The sewage treatment device according to claim 8, characterized in that: The bottom of the mounting frame (801) is fixedly connected to a mounting rod frame (807), and a movable hole is opened on the mounting rod frame (807), and a pulley (808) is rotatably connected to the movable hole through a bearing, and the cable (806) slides on the outside of the pulley (808).

10. The sewage treatment device according to claim 4, characterized in that: A primary filter box (3) is fixedly connected to the top of the main box body (1), a liquid inlet (4) is provided on the top of the primary filter box (3), and a filter plate (5) is fixedly connected to the inner wall of the primary filter box (3).

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