Multi-stage sewage treatment equipment

Abstract

The present invention relates to the field of sewage treatment, and in particular to a multi-stage sewage treatment equipment, comprising a large particle impurity filter box, a small particle impurity filter unit is arranged on one side of the large particle impurity filter box, and a large particle impurity filter plate is rotatably arranged in the middle of the large particle impurity filter box. When multi-stage sewage treatment is performed, the provided impurity separator cooperates with the drive of a motor to quickly throw out the sewage through centrifugal separation, so that the sewage can quickly pass through the impurity separation net with a high mesh number, thereby achieving the effect of separating small particle impurities in the sewage. In this way, the small particle impurities in the sewage can be quickly filtered and separated, and the filtration efficiency is effectively improved. In addition, the separator connection mechanism cooperates with the drive mechanism, and when cleaning the small particle impurities, the discharge port at the bottom can be opened to clean out the small particle impurities attached to the impurity separation net, making cleaning more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to multi-stage sewage treatment equipment. Background Art

[0002] With global water shortages and increasing environmental pressures, wastewater treatment technology has become a key component of sustainable development. Modern wastewater treatment systems separate, transform, and harmlessly treat pollutants through physical, chemical, and biological means to ensure water safety and the feasibility of recycling. Current treatment processes, widely used in construction, municipal administration, and industry, face the challenge of balancing treatment efficiency and operating costs, particularly in the solid-liquid separation process, where significant technical bottlenecks exist.

[0003] In traditional sewage filtration systems, physical and chemical treatments are primarily used to remove large particles and organic matter from wastewater during the primary treatment stage. Traditional multi-stage physical filtration systems typically employ gravity-fed screening processes, using gradient mesh sizes (typically 20-200 mesh) to achieve graded impurity retention. However, when processing fine particles, the fluid resistance generated by high-mesh screens (≥150 mesh) increases exponentially. Increasing the mesh size from 100 to 200 mesh increases the local resistance coefficient by approximately 4.3 times, directly resulting in a decrease in system throughput of over 58%. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a multi-stage sewage treatment equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A multi-stage sewage treatment equipment includes a large particle impurity filter box, a small particle impurity filter unit is provided on one side of the large particle impurity filter box, a large particle impurity filter plate is rotatably provided in the middle of the large particle impurity filter box, a pulse cleaning unit is provided on one side of the large particle impurity filter plate of the large particle impurity filter box, and a large particle impurity collection box is placed on the upper surface of the large particle impurity filter box on one side of the large particle impurity filter plate;

[0007] The small particle impurity filtering unit includes a water collecting tank, a water collecting cavity is opened inside the water collecting tank, an impurity separator is vertically arranged at the center of the water collecting cavity, a motor is arranged at the center of the top of the water collecting tank, and a separator connection mechanism for assembling and connecting with the motor is connected to the top of the impurity separator;

[0008] The separator connection mechanism includes a main connecting rod, and a plurality of side connecting rods for fixing the impurity separator are evenly arranged and fixedly connected on the side wall of the bottom end of the main connecting rod. A sliding cavity is vertically opened at the bottom of the main connecting rod, and a closer is slidably fitted in the sliding cavity. A limiting mechanism is provided above the closer in the sliding cavity.

[0009] The impurity separator comprises a separator shell, and a plurality of impurity separation nets are evenly arranged on the separator shell.

[0010] In addition, the preferred structure is that the top of the separator shell is provided with a water inlet 2, the middle part of the separator shell is set as an arc part, the bottom of the separator shell is provided with a discharge port, the discharge port is provided with a limiting step for supporting the closer, and the mesh size of the impurity separation net is selected to be 80-120 mesh.

[0011] In addition, a preferred structure is that a sliding hole is opened at the bottom of the sliding cavity, the closer is vertically slidably fitted in the sliding hole, an impurity shield is provided at the bottom end of the main connecting rod and located outside the sliding hole, and a sealing rubber ring is symmetrically provided on the wall of the sliding hole;

[0012] The closer includes a blocking plate for resting against the limit step, a sliding rod is vertically fixedly connected to the top of the blocking plate, a ball shield is provided at the bottom of the blocking plate, the sliding rod is slidably fitted in the sliding hole, a sliding head is provided at the top of the sliding rod, the sliding head is slidably fitted in the sliding cavity, and the limiting mechanism is provided above the sliding head.

[0013] In addition, the preferred structure is that the limiting mechanism includes a limiting push rod, the limiting push rod is against the upper part of the sliding head, the top rod body of the limiting push rod is provided with a sliding sleeve on the outside, the top of the sliding sleeve is fixedly connected to the top of the sliding cavity, the limiting push rod is slidably fitted on the sliding sleeve, the outer sleeve of the sliding sleeve is provided with a second spring, and the two ends of the second spring are respectively against the upper and lower ends of the sliding cavity.

[0014] In addition, the preferred structure is that the water collecting tank is installed on the filter unit mounting platform, and a low-temperature evaporator is provided on the other side of the filter unit mounting platform away from the large particle impurity filter box, and a second water pump is provided on the filter unit mounting platform on one side of the water collecting tank. The second water pump is used to transport the water in the water collecting tank to the low-temperature evaporator, and the motor is installed on the frame of the filter unit mounting platform. A driving mechanism for adjusting the height of the closer is provided on the filter unit mounting platform on one side of the water collecting tank.

[0015] In addition, a preferred structure is that a cavity is opened inside the large particle impurity filter box, an operating platform is provided on the outer wall of the top of the large particle impurity filter box, and driving devices for driving the large particle impurity filter plates to rotate are symmetrically provided on both sides of the operating platform, a filter box water inlet pipe is provided on the top of the box body on the side of the large particle impurity filter box away from the small particle impurity filter unit, a pair of collection box limit blocks located on the outer side of the top of the large particle impurity filter box are provided on one side of each driving device, and the large particle impurity collection box is placed between the corresponding pair of collection box limit blocks;

[0016] The upper surface of the large particle impurity filter box is provided with a grid plate placement groove located between the limiting blocks of the collection box, a filter grid plate is vertically placed in the grid plate placement groove, and the bottom wall of the cavity of the large particle impurity filter box is provided with a filter plate limiting groove located below the large particle impurity filter plate;

[0017] A first water pump is provided on the upper surface of the operating platform close to the small particle impurity filtering unit. The water pumping end of the first water pump is located in the cavity of the large particle impurity filtering box, and the drainage end is connected to the drainage box. A drainage box mounting plate is fixedly connected to the side wall of the operating platform located at the first water pump, and the drainage box is installed on the upper surface of the drainage box mounting plate.

[0018] In addition, a preferred structure is that drive device connectors for assembling and connecting with the output end of the drive device are symmetrically provided on both sides of the top of the large particle impurity filter plate body, a lower collecting tank is provided at the bottom of the large particle impurity filter plate, a filter grid is provided on the large particle impurity filter plate, and a limit baffle is provided on the top of the large particle impurity filter plate;

[0019] The pulse cleaning unit includes a pulse pump, which is arranged on an operating platform on a frame on one side of the large particle impurity filter plate. The top of the frame on which the pulse pump is installed is provided with a plurality of air jets evenly arranged in the longitudinal direction and connected to the pulse pump, and the air jets are located above the large particle impurity filter plate;

[0020] The large particle impurity collection box is provided with a cavity for collecting impurities, a plurality of water seepage grooves evenly arranged laterally are provided on the bottom wall of the cavity of the large particle impurity collection box, and handles are symmetrically provided on both side walls of the large particle impurity collection box.

[0021] In addition, a preferred structure is that a water suction pipe for connecting to the second water pump is provided on one side wall of the bottom of the water collecting tank body, a water inlet 1 is provided on the top of the water collecting tank, the drainage box is located above the water inlet 1, an impurity collection shell is provided at the center of the bottom wall of the water collecting chamber, a push rod movable shell is provided on the impurity collection shell, and a visual window is provided on the water collecting tank body;

[0022] The impurity collecting shell has an opening on the top, the impurity separator is located above the opening, a collecting box placement cavity is provided inside the impurity collecting shell, and a small particle impurity collecting box is placed on the bottom wall of the collecting box placement cavity.

[0023] In addition, the preferred structure is that the driving mechanism includes a servo electric cylinder, which is installed on the side wall of the filter unit mounting platform, a piston rod is provided at the output end of the servo electric cylinder, a drainage adjustment mechanism is installed on the top of the piston rod body, a ball push rod is fixedly connected to the piston rod body, and the ball push rod is provided inside the push rod movable shell for vertical movement, and a ball is rotatably provided at the end of the ball push rod on the other side away from the piston rod, and the ball is located below the closer.

[0024] In addition, a preferred structure is that the drainage adjustment mechanism includes a drainage adjustment mechanism mounting frame, the drainage adjustment mechanism mounting frame is arranged on the filter unit mounting platform, a telescopic structure is provided on the top of the drainage adjustment mechanism mounting frame, the telescopic structure includes a telescopic movable rod, the top end of the telescopic movable rod body is connected to the drainage adjustment mechanism mounting frame, and the bottom telescopic rod body is connected to the connecting frame, the outer surface of the telescopic movable rod is provided with a first spring, one end of the first spring is connected to the drainage adjustment mechanism mounting frame, and the other end is connected to the connecting frame;

[0025] The bottom of one end of the connecting frame is connected to an electric cylinder connecting rod, the bottom end of the electric cylinder connecting rod is assembled on the piston rod, and the bottom end of the other side of the connecting frame is fixedly connected to a drain stopper, and the drain stopper is arranged in the drainage box for vertical movement;

[0026] A cavity is provided inside the drainage box, and a water pump connecting pipe for connecting to the first water pump is provided on one side of the drainage box body. The other end of the drainage box body away from the water pump connecting pipe is connected to a drainage channel, and the drainage channel is located above the water inlet one. The drainage box cavity is divided into two cavities by a baffle, and a drainage port is provided on the baffle. A block receiving groove is provided on one side of the baffle on the bottom wall of the drainage box cavity, and the drainage port block is arranged at the block receiving groove and moves vertically.

[0027] The beneficial effects of the present invention are:

[0028] 1. When performing multi-stage sewage treatment, the impurity separator cooperates with the motor drive to quickly throw out the sewage through centrifugal separation. In this way, the sewage can quickly pass through the impurity separation net with a high mesh count, thereby achieving the effect of separating small particles of impurities in the sewage. This can quickly separate small particles of impurities in the sewage and effectively improve the separation efficiency. In addition, the separator connection mechanism cooperates with the drive mechanism, and when cleaning small particles of impurities, the discharge port at the bottom can be opened to clean out the small particles of impurities attached to the impurity separation net, making cleaning more convenient.

[0029] 2. The large particle impurities in the sewage are filtered through the large particle impurity filter plate, and the pulse cleaning unit is used to quickly clean it during cleaning. The operator does not need to dismantle the large particle impurity filter plate for cleaning, which ensures the continuous operation of the equipment and further improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the processing equipment;

[0031] Figure 2 This is a schematic diagram of the structure when the large particle impurity filter plate is located above the large particle impurity collection box;

[0032] Figure 3 This is a schematic diagram of the structure after the filter grid plate and the large particle impurity filter box are separated;

[0033] Figure 4 This is a schematic diagram of the structure of the large particle impurity filter plate;

[0034] Figure 5 This is a schematic diagram of the structure of a large particle impurity collection box;

[0035] Figure 6 This is a structural diagram of a large particle impurity filter box;

[0036] Figure 7 This is a schematic diagram of the internal structure of the large particle impurity filter box;

[0037] Figure 8 It is a structural diagram of the operating platform;

[0038] Figure 9 It is a structural schematic diagram of a small particle impurity filtering unit;

[0039] Figure 10 Schematic diagram of the structure of the driving mechanism;

[0040] Figure 11 It is a structural diagram of the drainage regulating mechanism;

[0041] Figure 12 It is a structural schematic diagram of the telescopic structure;

[0042] Figure 13 This is a schematic diagram of the structure inside the drainage box;

[0043] Figure 14 Schematic diagram of the internal structure of the water collection tank;

[0044] Figure 15 This is a schematic diagram of the internal structure of the water collection tank without a drainage box;

[0045] Figure 16 Schematic diagram of the structure of the water collecting chamber;

[0046] Figure 17 It is a structural diagram of a part of the water collecting chamber;

[0047] Figure 18 This is a structural diagram of the impurity separator and the separator connection mechanism during installation;

[0048] Figure 19 It is a structural diagram of the separator connection mechanism;

[0049] Figure 20 A schematic diagram of the structure after the main connecting rod and the closer are separated;

[0050] Figure 21 It is a structural schematic diagram of a local enlargement of the sliding hole;

[0051] Figure 22 Schematic diagram of the internal structure of the impurity separator;

[0052] Figure 23 This is a partial enlarged view of the interior of the impurity separator.

[0053] Figure: 01, large particle filter box; 011, operating platform; 0111, drainage box mounting plate; 0112, first water pump; 012, drive device; 013, filter box inlet pipe; 014, collection box limit block; 015, grid plate placement slot; 016, filter plate limit slot; 02, small particle filter unit; 03, low-temperature evaporator; 04, large particle filter plate; 041, lower collection tank; 042, limit baffle; 043, drive device connector; 044, filter grid; 05. Pulse cleaning unit; 051. Pulse pump; 052. Air jet nozzle; 06. Large particle impurity collection box; 061. Seepage trough; 062. Handle; 07. Filter grid plate; 08. Filter unit mounting platform; 09. Second water pump; 1. Water collection tank; 11. Water collection chamber; 12. Impurity collection shell; 121. Opening; 122. Collection box placement chamber; 13. Small particle impurity collection box; 14. Visual window; 15. Push rod movable shell; 16. Water extraction pipe; 17. Water inlet 1; 2. Drive mechanism; 21 , servo cylinder; 22, piston rod; 23, ball push rod; 24, ball; 3, drainage box; 31, water pump connecting pipe; 32, drainage channel; 33, baffle; 331, drainage outlet; 34, block storage slot; 4, drainage adjustment mechanism; 41, electric cylinder connecting rod; 42, connecting frame; 421, drainage outlet block; 43, telescopic structure; 431, telescopic movable rod; 432, first spring; 44, drainage adjustment mechanism mounting frame; 5, motor; 6, separator connecting mechanism; 61, main connecting rod; 61 1. Sliding cavity; 612. Sliding hole; 6121. Sealing rubber ring; 613. Impurity shielding cover; 62. Side connecting rod; 63. Closer; 631. Sliding head; 632. Sliding rod; 633. Sealing plate; 634. Ball shielding cover; 7. Impurity separator; 71. Separator housing; 711. Arc portion; 712. Discharge port; 7121. Limiting step; 713. Water inlet 2; 72. Impurity separation net; 8. Limiting mechanism; 81. Sliding sleeve; 82. Limiting push rod; 83. Second spring. DETAILED DESCRIPTION

[0054] 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.

[0055] Reference Figure 1-23A multi-stage sewage treatment equipment includes a large particle impurity filter box 01, a small particle impurity filter unit 02 is provided on one side of the large particle impurity filter box 01, a large particle impurity filter plate 04 is rotatably provided in the middle of the large particle impurity filter box 01, the large particle impurity filter box 01 is provided with a pulse cleaning unit 05 located on one side of the large particle impurity filter plate 04, and a large particle impurity collection box 06 is placed on the upper surface of the large particle impurity filter box 01, which is located on one side of the large particle impurity filter plate 04. The large particle impurity collection box 06 is used to collect the cleaned large particles of impurities.

[0056] Among them, the small particle impurity filtration unit 02 includes a water collecting tank 1, a water collecting chamber 11 is opened inside the water collecting tank 1, an impurity separator 7 is vertically arranged at the center of the water collecting chamber 11, a motor 5 is arranged at the top center of the water collecting tank 1, and the top of the impurity separator 7 is connected to a separator connecting mechanism 6 for assembling and connecting with the motor 5, and the water collecting chamber 11 is used to collect filtered water.

[0057] In addition, the separator connection mechanism 6 includes a main connecting rod 61. Multiple side connecting rods 62 for securing the impurity separator 7 are evenly arranged and fixedly connected to the sidewalls of the bottom end of the main connecting rod 61. A sliding cavity 611 is vertically defined at the bottom of the main connecting rod 61. A closer 63 slidably engages within the sliding cavity 611. A limit mechanism 8 is provided above the closer 63 in the sliding cavity 611. The impurity separator 7 includes a separator housing 71. Multiple impurity separation nets 72 are evenly arranged on the separator housing 71. The impurity separation nets 72 can effectively block small particles of impurities.

[0058] At the same time, a water inlet 2 713 is provided on the top of the separator shell 71, a circular arc portion 711 is provided in the middle of the separator shell 71, a discharge port 712 is provided at the bottom of the separator shell 71, and a limiting step 7121 is provided at the discharge port 712 for resisting the closer 63. The mesh size of the impurity separation net 72 is selected to be 80-120 mesh. The impurity separation net 72 can effectively block fine particles of impurities in sewage.

[0059] At the same time, a sliding hole 612 is provided at the bottom of the sliding cavity 611, and the closer 63 slides vertically in the sliding hole 612. The bottom end of the main connecting rod 61 is located on the outside of the sliding hole 612 and is provided with an impurity shielding cover 613. The wall of the sliding hole 612 is symmetrically provided with a sealing rubber ring 6121. The closer 63 includes a sealing plate 633 for resting on the limiting step 7121. The top of the sealing plate 633 is vertically fixedly connected to the sliding rod 632, and the bottom end of the sealing plate 633 is provided with a ball shielding cover 634. The sliding rod 632 slides in the sliding hole 612, and a sliding head 631 is provided on the top of the sliding rod 632. The sliding head 631 slides in the sliding cavity 611. The limiting mechanism 8 is provided above the sliding head 631, and the sliding rod 632 realizes the vertical movement of the sealing plate 633.

[0060] At the same time, the limiting mechanism 8 includes a limiting push rod 82, which rests on the upper part of the sliding head 631. The top rod body of the limiting push rod 82 is externally sleeved with a sliding sleeve 81. The top of the sliding sleeve 81 is fixedly connected to the top of the sliding cavity 611. The limiting push rod 82 slides on the sliding sleeve 81. The outer sleeve of the sliding sleeve 81 is provided with a second spring 83. The two ends of the second spring 83 respectively rest on the upper and lower ends of the sliding cavity 611. The second spring 83 realizes the reset of the limiting push rod 82.

[0061] In addition, the water collecting tank 1 is installed on the filter unit mounting platform 08, and a low-temperature evaporator 03 is provided on the side of the filter unit mounting platform 08 away from the large particle impurity filter box 01. A second water pump 09 is provided on the filter unit mounting platform 08 on the side of the water collecting tank 1. The second water pump 09 is used to transport the water in the water collecting tank 1 to the low-temperature evaporator 03. The motor 5 is installed on the frame of the filter unit mounting platform 08. A driving mechanism 2 for adjusting the height of the closer 63 is provided on the side of the water collecting tank 1 on the filter unit mounting platform 08. The low-temperature evaporator 03 is used for the next level of sewage treatment.

[0062] Moreover, a cavity is opened inside the large particle impurity filter box 01, and an operating platform 011 is provided on the top outer wall of the large particle impurity filter box 01. The operating platform 011 is symmetrically provided with driving devices 012 on both sides of the large particle impurity filter plate 04 for driving the large particle impurity filter plate 04 to rotate. A filter box water inlet pipe 013 is provided on the top of the box body of the large particle impurity filter box 01 away from the small particle impurity filter unit 02. A pair of collection box limit blocks 014 located on the outside of the top of the large particle impurity filter box 01 are provided on one side of each driving device 012. The large particle impurity collection box 06 is placed between the corresponding pair of collection box limit blocks 014. The collection box limit block 014 is used for positioning the large particle impurity collection box 06.

[0063] Among them, a grid plate placement groove 015 located between the collection box limit blocks 014 is provided on the upper surface of the large particle impurity filter box 01, and a filter grid plate 07 is vertically placed at the grid plate placement groove 015. A filter plate limit groove 016 located below the large particle impurity filter plate 04 is provided on the bottom wall of the cavity of the large particle impurity filter box 01. A first water pumping pump 0112 is provided on the upper surface of the operating platform 011 close to the small particle impurity filter unit 02. The pumping end of the first water pump 0112 is located in the cavity of the large particle impurity filter box 01, and the drainage end is connected to the drainage box 3. The side wall of the operating platform 011 at the first water pump 0112 is fixedly connected to a drainage box mounting plate 0111. The drainage box 3 is installed on the upper surface of the drainage box mounting plate 0111. The first water pump 0112 is used to extract the sewage that has been preliminarily filtered in the large particle impurity filter box 01.

[0064] At the same time, the large particle impurity filter plate 04 is symmetrically provided with drive device connectors 043 for connecting to the output end of the drive device 012 on both sides of the top of the plate body, the large particle impurity filter plate 04 is provided with a lower collecting tank 041 at the bottom, the large particle impurity filter plate 04 is provided with a filter grid 044, and the large particle impurity filter plate 04 is provided with a limit baffle 042 on the top. The pulse cleaning unit 05 includes a pulse pump 051, and the pulse pump 051 is provided on the operating platform 011 on one side of the large particle impurity filter plate 04. The top of the frame on which the pulse pump 051 is installed is provided with a Multiple air nozzles 052 are evenly arranged in the longitudinal direction and connected to the pulse pump 051. The air nozzles 052 are located above the large particle impurity filter plate 04. A cavity for collecting impurities is provided on the large particle impurity collection box 06. A multiple water seepage grooves 061 are evenly arranged in the transverse direction on the bottom wall of the cavity of the large particle impurity collection box 06. Handles 062 are symmetrically provided on the side walls of the large particle impurity collection box 06. The air nozzles 052 blow the large particle impurities remaining on the large particle impurity filter plate 04 below into the large particle impurity collection box 06 below through the pulse pump 051.

[0065] At the same time, a suction pipe 16 for connecting to the second water pump 09 is provided on the side wall of the bottom side of the water collecting tank 1, a water inlet 17 is provided on the top of the water collecting tank 1, and the drainage box 3 is located above the water inlet 17. An impurity collecting shell 12 is provided at the center of the bottom wall of the water collecting chamber 11, and a push rod movable shell 15 is provided on the impurity collecting shell 12. A visual window 14 is provided on the tank body of the water collecting tank 1, an opening 121 is provided on the top of the impurity collecting shell 12, and the impurity separator 7 is located above the opening 121. A collection box placement cavity 122 is provided inside the impurity collecting shell 12, and a small particle impurity collection box 13 is placed on the bottom wall of the collection box placement cavity 122. The small particle impurity collection box 13 is used to collect small particle impurities falling from the opening 121.

[0066] In addition, the driving mechanism 2 includes a servo electric cylinder 21, which is installed on the side wall of the filter unit mounting platform 08. A piston rod 22 is provided at the output end of the servo electric cylinder 21, and a drainage adjustment mechanism 4 is installed on the top of the piston rod 22. A ball push rod 23 is fixedly connected to the piston rod 22. The ball push rod 23 is arranged inside the push rod movable shell 15 and moves vertically. A ball 24 is rotatably provided at the end of the ball push rod 23 on the other side away from the piston rod 22. The ball 24 is located below the closer 63. While supporting the closer 63, the ball 24 can rotate synchronously with the closer 63.

[0067] Among them, the drainage adjustment mechanism 4 includes a drainage adjustment mechanism mounting frame 44, the drainage adjustment mechanism mounting frame 44 is arranged on the filter unit mounting platform 08, and a telescopic structure 43 is arranged on the top of the drainage adjustment mechanism mounting frame 44, and the telescopic structure 43 includes a telescopic movable rod 431, the top of the telescopic movable rod 431 is connected to the drainage adjustment mechanism mounting frame 44, and the bottom telescopic rod body is connected to the connecting frame 42. The outside of the telescopic movable rod 431 is provided with a first spring 432, one end of the first spring 432 is connected to the drainage adjustment mechanism mounting frame 44, and the other end is connected to the connecting frame 42. The telescopic movable rod 431 is used to realize the vertical movement of the connecting frame 42.

[0068] The bottom end of one side of the connecting frame 42 is connected to the electric cylinder connecting rod 41, and the bottom end of the electric cylinder connecting rod 41 is assembled on the piston rod 22. The bottom end of the other side of the connecting frame 42 is fixedly connected to the drain outlet stopper 421, and the drain outlet stopper 421 is arranged in the drain box 3 and moves vertically. A cavity is opened inside the drain box 3, and a water pump connecting pipe 31 for connecting to the first water pump 0112 is provided on one side of the drain box 3 body. The other end of the drain box 3 body away from the water pump connecting pipe 31 is connected to the drain channel 32, and the drain channel 32 is located above the water inlet 17. The cavity of the drain box 3 is divided into two cavities by the baffle 33. The baffle 33 is provided with a drain outlet 331, and the bottom wall of the cavity of the drain box 3 is provided with a block receiving groove 34 located on one side of the baffle 33. The drain outlet stopper 421 is arranged to move vertically at the block receiving groove 34, and the drain outlet 331 is blocked by the drain outlet stopper 421.

[0069] In this embodiment, sewage is discharged from the filter box inlet pipe 013 into the large particle impurity filter box 01 for preliminary filtration, and the first water pump 0112 transports the sewage after preliminary filtration to the small particle impurity filter unit 02. During this process, water will flow to one side of the first water pump 0112 and flow through the large particle impurity filter plate 04. The filter grid 044 will block the large particle impurities in the sewage, thereby achieving the effect of preliminary filtration of large particle impurities.

[0070] As the sewage flows through, large particles of impurities will continue to adhere to the filter mesh 044. Once there are too many large particles of impurities on the filter mesh 044, the filter mesh 044 needs to be cleaned. First, stop the operation of the first water pump 0112, and then drive the drive device connector 043 to rotate through the drive device 012, so as to realize the rotation of the large particle impurity filter plate 04, so that the large particle impurity filter plate 04 rotates 180° upward from the filter plate limit groove 016 to the top, so that the large particle impurity filter plate 04 is located below the pulse cleaning unit 05. At this time, the pulse pump 051 cooperates with the air nozzle 052 to blow air downward, and the air nozzle 052 sprays air toward the large particle impurity filter plate 04 below, thereby blowing off the large particles of impurities attached to the filter mesh 044 and making them fall into the large particle impurity collection box 06.

[0071] When the large particle impurity filter plate 04 rotates from the sewage, the lower collection trough 041 can support the large particles of impurities settled at the bottom, and the limit baffle 042 prevents the impurities from falling vertically into the large particle impurity filter box 01 below during jet cleaning. After the impurities fall into the large particle impurity collection box 06, part of the water will flow into the large particle impurity collection box 06. At this time, the water can be discharged from the seepage trough 061 that the large particles of impurities cannot pass through, and flow back into the large particle impurity filter box 01. This ensures that there will not be a large amount of water accumulated in the large particle impurity collection box 06, and the operator can regularly remove the large particle impurity collection box 06 from the collection box limit block 014 using the handle 062.

[0072] During the process of rotating and lifting the large particle impurity filter plate 04, the filter mesh plate 07 can prevent a small number of large particle impurities from flowing out. When there is no obstruction of the large particle impurity filter plate 04, it can be intercepted. And because only a small number of large particle impurities are attached to the filter mesh plate 07 after the first water pump 0112 stops working, the operator only needs to clean the filter mesh plate 07 once in a long time, and it can be removed from the filter plate limit slot 016 when cleaning.

[0073] After the sewage is initially filtered by the large particle impurity filter plate 04, it is pumped out by the first pump 0112 and sent to the next level of sewage treatment. The first pump 0112 pumps the sewage out and sends it into the drainage box 3. After the sewage enters the drainage box 3, it passes through the drainage port 331 and is finally discharged from the drainage channel 32 and falls into the water inlet 17 below. After the sewage enters the water inlet 17, it will fall vertically into the impurity separator 7 through the water inlet 2 713. At this time, the impurity separator 7 is electrically The machine 5 drives the separator connecting mechanism 6 to rotate, realizing the self-rotation of the impurity separator 7. After the sewage falls into the impurity separator 7, the sewage will be thrown out from the impurity separation net 72 under the action of centrifugal force. The impurity separation net 72 will block small particles of impurities, and the arc portion 711 prevents the sewage from being thrown out from the water inlet 713. At the same time, due to the high mesh number of the impurity separation net 72, only centrifugal separation can quickly throw out the sewage, so that the sewage is quickly filtered and discharged into the water collection chamber 11.

[0074] The sewage entering the water collecting chamber 11 has been filtered to remove all visible impurities. At this time, the second water pump 09 pumps the filtered sewage out through the water pumping pipe 16 and sends it to the low-temperature evaporator 03 for the next stage of separation.

[0075] Under the long-term separation of the impurity separator 7, small particles of impurities will slowly accumulate on the inner wall of the impurity separation net 72. The operator can observe the situation in the water collection chamber 11 through the visual window 14. When there are more small particles of impurities attached to the impurity separation net 72, cleaning should be started. First, the driving mechanism 2 works, and the servo electric cylinder 21 drives the top piston rod 22 to extend, thereby realizing the synchronous rise of the ball push rod 23 and the electric cylinder connecting rod 41. The continuous rise of the ball push rod 23 makes the ball 24 contact the blocking plate 633 and move it upward. As the blocking plate 633 moves upward, the sliding rod 632 slides vertically at the sliding hole 612, and the sliding head 631 moves upward in the sliding chamber 611. As the sliding head 631 moves upward, The movement causes the limiting push rod 82 to move upward at the sliding sleeve 81, and at the same time drives the second spring 83 to contract. At this time, the sealing plate 633 is separated from the limiting step 7121, and the discharge port 712 is opened. At this time, the operator can use the existing air gun to blow down the small particles of impurities on the inner wall of the impurity separation net 72, and make them fall from the limiting step 7121. The small particles of impurities will fall from the opening 121 into the small particle impurity collection box 13 below. Because the position of the water inlet 17 is limited, the operator can drive the motor 5 to rotate slowly, and the ball 24 can cooperate with its rotation while supporting the sealing plate 633, so that the impurity separator 7 can be cleaned when it rotates to ensure that small particles of impurities will not cause blockage of the impurity separation net 72.

[0076] And when the ball push rod 23 is lifted, the electric cylinder connecting rod 41 drives the connecting frame 42 to move upward, causing the telescopic movable rod 431 and the first spring 432 to contract, and at the same time, the drain outlet block 421 is lifted synchronously, and the drain outlet block 421 will move upward from the block receiving groove 34 to block the drain outlet 331. Because it takes a long time to wait for the first water pump 0112 to stop working when cleaning small particles of impurities, the drain outlet 331 is blocked first, so that the sewage will not fall into the water collection tank 1, and the sewage will be temporarily stored inside the drainage box 3.

[0077] After cleaning the small particles of impurities, the piston rod 22 of the servo electric cylinder 21 contracts and resets. At this time, the connecting frame 42 is synchronously reset with the assistance of the telescopic structure 43, so that the drain outlet block 421 is re-stored into the block receiving groove 34. At this time, the sewage resumes circulation, and the ball push rod 23 is reset. The second spring 83 is reset by elastic potential energy without external force restriction. The second spring 83 drives the limiting push rod 82 to extend from the sliding sleeve 81, thereby pushing the closer 63 downward, so that the blocking plate 633 is re-fitted to the limiting step 7121, and the discharge port 712 is re-blocked.

[0078] The impurity shielding cover 613 protects small impurities from falling on the sliding hole 612, and the sealing rubber ring 6121 improves the sealing and waterproof performance, while the ball shielding cover 634 prevents small impurities from falling on the ball 24.

[0079] In the present invention, when multi-stage treatment of sewage is carried out, the impurity separator 7 is provided to cooperate with the drive of the motor 5 to quickly throw out the sewage through centrifugal separation, so that the sewage can quickly pass through the impurity separation net 72 with a high mesh number, thereby achieving the effect of filtering and separating small particles of impurities in the sewage. In this way, small particles of impurities in the sewage can be quickly separated, and the separation efficiency can be effectively improved. The separator connecting mechanism 6 cooperates with the driving mechanism 2, and when cleaning small particles of impurities, the discharge port 712 at the bottom can be opened to clean out the small particles of impurities attached to the impurity separation net 72, making cleaning more convenient.

[0080] Moreover, large particle impurities in sewage are filtered through the large particle impurity filter plate 04, and are quickly cleaned by the provided pulse cleaning unit 05, without the need for operators to dismantle the large particle impurity filter plate 04 for cleaning. While ensuring that impurities in sewage can be quickly filtered out, the efficiency of impurity cleaning can also be improved.

[0081] 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 multi-stage sewage treatment device, comprising a large particle impurity filter box (01), characterized in that: A small particle impurity filter unit (02) is provided on one side of the large particle impurity filter box (01), a large particle impurity filter plate (04) is rotatably provided in the middle of the large particle impurity filter box (01), a pulse cleaning unit (05) is provided on one side of the large particle impurity filter plate (04) of the large particle impurity filter box (01), and a large particle impurity collection box (06) is placed on the upper surface of the large particle impurity filter box (01) on one side of the large particle impurity filter plate (04); The small particle impurity filtering unit (02) comprises a water collecting tank (1), the water collecting tank (1) being mounted on a filter unit mounting platform (08), a water collecting chamber (11) being provided inside the water collecting tank (1), an impurity separator (7) being vertically provided at the center of the water collecting chamber (11), a motor (5) being provided at the center of the top of the water collecting tank (1), and a separator connecting mechanism (6) for assembly and connection with the motor (5) being connected to the top of the impurity separator (7); The separator connection mechanism (6) includes a main connection rod (61), a plurality of side connection rods (62) for fixing the impurity separator (7) are evenly arranged and fixedly connected on the side wall of the bottom end of the main connection rod (61), a sliding cavity (611) is vertically opened at the bottom of the main connection rod (61), a closer (63) is slidably fitted in the sliding cavity (611), and a limiting mechanism (8) is provided above the closer (63) in the sliding cavity (611); A driving mechanism (2) for adjusting the height of the closer (63) is provided on one side of the water collecting tank (1) on the filter unit mounting platform (08); The impurity separator (7) comprises a separator housing (71), and a plurality of impurity separation nets (72) are evenly arranged on the separator housing (71); The driving mechanism (2) comprises a servo electric cylinder (21), an output end of the servo electric cylinder (21) is provided with a piston rod (22), and a drainage regulating mechanism (4) is installed on the top of the piston rod (22); The drainage regulating mechanism (4) includes a drainage regulating mechanism mounting frame (44), the drainage regulating mechanism mounting frame (44) is arranged on the filter unit mounting platform (08), a telescopic structure (43) is arranged on the top of the drainage regulating mechanism mounting frame (44), the telescopic structure (43) includes a telescopic movable rod (431), the top end of the telescopic movable rod (431) is connected to the drainage regulating mechanism mounting frame (44), and the bottom telescopic rod body is connected to the connecting frame (42), the outer portion of the telescopic movable rod (431) is provided with a first spring (432), one end of the first spring (432) is connected to the drainage regulating mechanism mounting frame (44), and the other end is connected to the connecting frame (42); The bottom end of one side of the connecting frame (42) is connected to an electric cylinder connecting rod (41), the bottom end of the electric cylinder connecting rod (41) is assembled on the piston rod (22), and the bottom end of the other side of the connecting frame (42) is fixedly connected to a drain outlet block (421), and the drain outlet block (421) is arranged in the drain box (3) for vertical movement.

2. A multi-stage sewage treatment equipment according to claim 1, characterized in that: The top of the separator housing (71) is provided with a second water inlet (713), the middle of the separator housing (71) is provided with a circular arc portion (711), the bottom of the separator housing (71) is provided with a discharge port (712), and a limiting step (7121) for resisting the closer (63) is provided at the discharge port (712). The mesh size of the impurity separation net (72) is selected to be 80-120 mesh.

3. A multi-stage sewage treatment equipment according to claim 2, characterized in that: A sliding hole (612) is provided at the bottom of the sliding cavity (611), the closer (63) vertically slides in the sliding hole (612), an impurity shielding cover (613) is provided at the bottom end of the main connecting rod (61) outside the sliding hole (612), and a sealing rubber ring (6121) is symmetrically provided on the upper and lower sides of the wall of the sliding hole (612); The closer (63) includes a blocking plate (633) for abutting against the limiting step (7121), a sliding rod (632) being vertically fixedly connected to the top of the blocking plate (633), a ball shielding cover (634) being provided at the bottom of the blocking plate (633), the sliding rod (632) being slidably engaged in the sliding hole (612), a sliding head (631) being provided at the top of the sliding rod (632), the sliding head (631) being slidably engaged in the sliding cavity (611), and the limiting mechanism (8) being provided above the sliding head (631).

4. A multi-stage sewage treatment equipment according to claim 3, characterized in that: The limiting mechanism (8) includes a limiting push rod (82), the limiting push rod (82) abuts against the upper part of the sliding head (631), the top rod body of the limiting push rod (82) is provided with a sliding sleeve (81) on the outside, the top of the sliding sleeve (81) is fixedly connected to the top of the sliding cavity (611), the limiting push rod (82) is slidably fitted on the sliding sleeve (81), the outer sleeve of the sliding sleeve (81) is provided with a second spring (83), and the two ends of the second spring (83) respectively abut against the upper and lower ends of the sliding cavity (611).

5. The multi-stage sewage treatment equipment according to claim 1, characterized in that: A low-temperature evaporator (03) is provided on the other side of the filter unit mounting platform (08) away from the large particle impurity filter box (01), and a second water pump (09) is provided on the filter unit mounting platform (08) on one side of the water collecting tank (1). The second water pump (09) is used to transport water in the water collecting tank (1) to the low-temperature evaporator (03), and the motor (5) is installed on the frame of the filter unit mounting platform (08).

6. The multi-stage sewage treatment equipment according to claim 1, characterized in that: The large particle impurity filter box (01) has a cavity formed therein, and an operating platform (011) is provided on the outer wall of the top of the large particle impurity filter box (01). Drive devices (012) for driving the large particle impurity filter plate (04) to rotate are symmetrically provided on both sides of the operating platform (011) and are used to drive the large particle impurity filter plate (04). A filter box water inlet pipe (013) is provided on the top of the box body of the large particle impurity filter box (01) away from the small particle impurity filter unit (02). A pair of collection box limit blocks (014) located outside the top of the large particle impurity filter box (01) are provided on one side of each drive device (012), and the large particle impurity collection box (06) is placed between the corresponding pair of collection box limit blocks (014). A grid plate placement groove (015) is provided on the upper surface of the large particle impurity filter box (01) and is located between the limiting blocks (014) of the collection box. A filter grid plate (07) is vertically placed in the grid plate placement groove (015). A filter plate limiting groove (016) is provided on the bottom wall of the cavity of the large particle impurity filter box (01) and is located below the large particle impurity filter plate (04). A first water pump (0112) is provided on the upper surface of the operating platform (011) near the small particle impurity filter unit (02); a water pumping end of the first water pump (0112) is located in the cavity of the large particle impurity filter box (01), and a water discharge end is connected to a water discharge box (3); a water discharge box mounting plate (0111) is fixedly connected to the side wall of the operating platform (011) at the first water pump (0112); and the water discharge box (3) is mounted on the upper surface of the water discharge box mounting plate (0111).

7. The multi-stage sewage treatment equipment according to claim 6, characterized in that: The large particle impurity filter plate (04) has drive device connectors (043) symmetrically arranged on both sides of the top of the plate body for assembly and connection with the output end of the drive device (012), a lower collecting trough (041) is arranged at the bottom of the large particle impurity filter plate (04), a filter grid (044) is arranged on the large particle impurity filter plate (04), and a limit baffle (042) is arranged on the top of the large particle impurity filter plate (04); The pulse cleaning unit (05) includes a pulse pump (051), the pulse pump (051) is arranged on a frame on one side of the large particle impurity filter plate (04) on the operating platform (011), and a plurality of air jets (052) evenly arranged in the longitudinal direction and connected to the pulse pump (051) are provided on the top of the frame on which the pulse pump (051) is installed, and the air jets (052) are located above the large particle impurity filter plate (04); The large particle impurity collection box (06) is provided with a cavity for collecting impurities, a plurality of water seepage grooves (061) evenly arranged in the transverse direction are provided on the bottom wall of the cavity of the large particle impurity collection box (06), and handles (062) are symmetrically provided on both side walls of the large particle impurity collection box (06).

8. The multi-stage sewage treatment equipment according to claim 6, characterized in that: A water pumping pipe (16) for connecting to a second water pump (09) is provided on a side wall of the bottom of the water collecting tank (1), a water inlet (17) is provided on the top of the water collecting tank (1), the drainage box (3) is located above the water inlet (17), an impurity collecting shell (12) is provided at the center of the bottom wall of the water collecting chamber (11), a push rod movable shell (15) is provided on the impurity collecting shell (12), and a visual window (14) is provided on the tank body of the water collecting tank (1); The impurity collection shell (12) has an opening (121) at the top, the impurity separator (7) is located above the opening (121), a collection box placement cavity (122) is provided inside the impurity collection shell (12), and a small particle impurity collection box (13) is placed on the bottom wall of the collection box placement cavity (122).

9. The multi-stage sewage treatment equipment according to claim 8, characterized in that: The servo electric cylinder (21) is mounted on the side wall of the filter unit mounting platform (08), and a ball push rod (23) is fixedly connected to the rod body of the piston rod (22). The ball push rod (23) is arranged inside the push rod movable shell (15) and moves vertically. A ball (24) is rotatably arranged at the end of the ball push rod (23) on the other side away from the piston rod (22), and the ball (24) is located below the closer (63).

10. The multi-stage sewage treatment equipment according to claim 8, characterized in that: The drainage box (3) has a cavity therein, and a water pump connecting pipe (31) for connecting to a first water pump (0112) is provided on one side of the drainage box (3) body. The other end of the drainage box (3) body away from the water pump connecting pipe (31) is connected to a drainage channel (32), and the drainage channel (32) is located above the water inlet (17). The cavity of the drainage box (3) is divided into two cavities by a baffle (33) provided therein, and a drainage port (331) is provided on the baffle (33). The bottom wall of the cavity of the drainage box (3) is provided with a block receiving groove (34) located on one side of the baffle (33), and the drainage port block (421) is provided at the block receiving groove (34) and moves vertically.

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