Wastewater purification equipment for waste heat recovery

Abstract

The present invention belongs to the field of wastewater purification, and in particular relates to a wastewater purification device for waste heat recovery and utilization, comprising a main water pump and a heat exchange purification structure, wherein the water inlet end of the main water pump is connected to a first wastewater discharge pipe, and the water outlet end of the main water pump is connected to a first wastewater discharge pipe; a wastewater purification water storage tank is provided in the heat exchange purification structure, an insertion port is provided at one end of the wastewater purification water storage tank, a heat exchanger is slidably connected in the wastewater purification water storage tank through the insertion port, the heat exchanger is composed of a heat exchange bottom plate and a plurality of heat exchange plates, the heat exchange plates are hollow inside and are interconnected, and the bottoms of the plurality of heat exchange plates are fixedly connected to the heat exchange bottom plate; an automatic spray structure is installed on the top of the wastewater purification water storage tank; in the present invention, the wastewater purification water storage tank can perform heat exchange work while purifying the wastewater, thereby reducing the storage and transportation costs of the wastewater in the later stage, and the wastewater purification water storage tank can be cleaned by arranging the automatic spray structure.

Description

Technical Field

[0001] The invention belongs to the field of wastewater purification, and in particular relates to a wastewater purification device for waste heat recovery and utilization. Background Art

[0002] The main purpose of heat exchange in the bathroom is to improve energy utilization efficiency and save energy costs. Due to the large amount of hot water used in the bathroom, the waste heat generated during the bathing process can be recovered through heat exchange and exchanged with clean water sources, which can greatly reduce the energy consumption during subsequent heating. The waste water after heat exchange needs to be transported to other places for separate purification, which increases the transportation cost of the waste water. At the same time, when cleaning the heat exchange equipment, it is necessary to manually clean the inside of it. The cleaning process is cumbersome and the stains remaining on the heat exchange equipment will emit irritating odors, causing pollution to the working environment. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] The present invention provides a wastewater purification device for waste heat recovery to solve the following problems:

[0005] 1. The wastewater after heat exchange needs to be transported to other places for separate purification, which increases the transportation cost of the wastewater;

[0006] 2. When cleaning, it is necessary to manually clean the inside of the heat exchange equipment. The cleaning process is cumbersome and the odor emitted will pollute the working environment. (II) Summary of the invention

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A wastewater purification device for waste heat recovery and utilization, comprising a main water pump and a heat exchange purification structure, wherein the water inlet end of the main water pump is connected to a first wastewater discharge pipe, and the water outlet end of the main water pump is connected to a first wastewater discharge pipe;

[0010] The heat exchange purification structure includes an outer protective casing, a heat exchanger and an automatic spray structure. A wastewater purification water storage tank is fixedly installed in the outer protective casing. An insertion port is provided at one end of the wastewater purification water storage tank. The heat exchanger is slidably connected to the wastewater purification water storage tank through the insertion port.

[0011] The heat exchanger is composed of a heat exchange bottom plate and a plurality of heat exchange plates, the plurality of heat exchange plates are hollow inside and interconnected, and the bottoms of the plurality of heat exchange plates are fixedly connected to the heat exchange bottom plate;

[0012] A sealing top frame is detachably mounted on the wastewater purification storage tank, the sealing top frame is sealed and connected to the top of the heat exchanger, and a plurality of isolation plugs are fixedly connected to the bottom of the sealing top frame, and the plurality of isolation plugs divide the interior of the wastewater purification storage tank into a first wastewater sedimentation chamber, a wastewater disinfection chamber, a second wastewater sedimentation chamber and an odor purification chamber in sequence;

[0013] The outer side of the wastewater purification water storage tank is provided with an indirect discharge structure corresponding to the first wastewater sedimentation chamber, the wastewater disinfection chamber and the second wastewater sedimentation chamber. Multiple groups of activated carbon plates are inserted in the odor purification chamber, and the automatic spray structure is installed on the top of the sealed top frame.

[0014] The free ends of the first wastewater discharge pipe respectively penetrate the outer protective casing and the wastewater purification storage tank and are connected to the first wastewater sedimentation chamber; the first wastewater discharge pipe is connected to a backwash drain pipe, and the free end of the backwash drain pipe is connected to a main wastewater discharge pipe; the free end of the main wastewater discharge pipe is connected to the sewer, and the first wastewater discharge pipe is connected to the first wastewater discharge pipe through a docking pipe.

[0015] Furthermore, filter plates are provided in the first wastewater sedimentation chamber and the second wastewater sedimentation chamber, the filter plates are slidably connected to the heat exchanger and the top of the filter plates is detachably mounted on the bottom of the sealing top frame, a first one-way pump is provided at the bottom of each of the plurality of isolation plug plates, the free end of the first wastewater discharge pipe is connected to a first control valve, the first wastewater discharge pipe is connected to a second control valve, the connection between the first wastewater discharge pipe and the backwash drain pipe is located between the main water pump and the second control valve, the backwash drain pipe is connected to a third control valve, the butt joint is connected to a fourth control valve, and the main wastewater discharge pipe is connected to a fifth control valve.

[0016] Furthermore, the indirect discharge structure includes a protective shell, a one-way discharge nozzle, a first material discharge box, a material storage box and a stirring box, and the nozzle of the one-way discharge nozzle penetrates the protective shell and the wastewater purification water storage tank and extends into the wastewater purification water storage tank;

[0017] A solid feeding pipe and a liquid feeding pipe are respectively arranged on one side of the stirring box, a liquid discharge pipe is connected to the bottom of the stirring box, a first one-way nozzle is connected to the free end of the liquid discharge pipe, an outlet of the first one-way nozzle is connected to the bottom of the material storage box, a second one-way nozzle is connected to the material storage box, an outlet of the second one-way nozzle is connected to the first material discharge box, and the first material discharge box is connected to the discharge inlet of the one-way discharge nozzle through a pipeline;

[0018] A rotating base is fixedly connected to one side of the protective shell, a push rod is slidably connected in the first material box, the rotating base is located directly above the first material box and is rotatably connected to the rotating rod, a limited sliding groove is arranged on the top of the push rod, the bottom end of the rotating rod is slidably connected in the limited sliding groove, a cam is fixedly connected to the rod body of the rotating rod, and a corrugated groove is arranged on the cam;

[0019] A sliding track is provided on the inner wall of the protective shell, a sliding plate is slidably connected in the sliding track, a roller and a fixed rod are respectively provided at the upper and lower ends of the sliding plate, the roller is rotatably connected to the corrugated groove provided on the cam, and the free end of the fixed rod is fixedly connected to the push rod.

[0020] Furthermore, a rotating motor is fixedly connected to one side of the protective housing provided with the rotating base, the rotating motor is located directly above the stirring box, and a stirring rod is fixedly connected to the rotating shaft end of the rotating motor, and the stirring rod is located in the stirring box;

[0021] A transmission belt is sleeved on the rotating shaft of the rotating motor, and the other end of the transmission belt is sleeved on the rotating rod.

[0022] Furthermore, an observation window is provided on the stirring box;

[0023] The top of the protective shell is in an open shape and two sides are provided with sliding slots, in which transparent mesh plates are inserted.

[0024] Furthermore, multiple flow ports are opened on multiple heat exchange plates, and one end of the heat exchanger close to the insertion port is connected to a water source inlet pipe and a water source outlet pipe. A first extraction pump is arranged at the bottom of the wastewater purification water storage tank, and the water inlet end of the first extraction pump passes through the wastewater purification water storage tank and the heat exchange bottom plate and is connected to the bottom of one side of the odor purification chamber close to the insertion port. The water outlet end of the first extraction pump is connected to an external water storage tank, and the water source outlet pipe is connected to an electric heater, and the water outlet end of the electric heater is connected to the shower pipe of the bathroom.

[0025] Furthermore, the top of the sealed top frame is open and a plurality of lower discharge ports are provided at the bottom, a plurality of springs are provided on the sealed top frame, the automatic spray structure comprises a first water storage frame, a liquid push plate and a plurality of spray pipes, the plurality of spray pipes correspond to the lower discharge ports one by one and are located in the lower discharge ports, a spray head is detachably installed at the bottom of the spray pipe, the first water storage frame is located above the sealed top frame, the first water storage frame is hollow inside and the lower surface is integrally fixedly connected with the top of the spray pipe, the lower surface of the first water storage frame is in contact with the spring, a liquid inlet is provided on one side of the top of the first water storage frame, a first inclined portion is also provided on the top of the first water storage frame, and the thickness of the first inclined portion gradually increases along the direction of the liquid inlet;

[0026] The upper surface of the first water storage frame is slidably connected with a liquid pushing plate, and the lower surface of the liquid pushing plate is provided with a second inclined portion, the second inclined portion is in contact with the first inclined portion, the upper surface of the liquid pushing plate is horizontal and slidably connected with the second water storage frame, the second water storage frame is fixedly mounted on the sealing top frame, and the second water storage frame is provided with a liquid outlet corresponding to the liquid inlet.

[0027] Furthermore, the automatic spray structure also includes a water storage tank, the water storage tank is connected to a second one-way pump, and the liquid outlet of the second one-way pump is connected to the second water storage frame;

[0028] The top of the hydraulic push plate is fixedly connected with a plurality of connecting rods, and the bottoms of the plurality of connecting rods are all embedded with rack plates;

[0029] A horizontal mounting platform is provided on one side of the water tank, on which a driving motor and multiple supporting bases are installed. The multiple supporting bases are rotatably connected to the same rotating main shaft, the rotating shaft of the driving motor is fixedly connected to the rotating main shaft, and the rotating main shaft is provided with half-tooth gears corresponding to multiple rack plates one by one, and the half-tooth gears are meshed with the rack plates.

[0030] Furthermore, a slide groove is provided on the top of the water tank, a return spring is installed in the slide groove, and the free end of the connecting rod is slidably connected in the slide groove and abuts against the return spring.

[0031] Furthermore, the first wastewater discharge pipe is connected to a reflux pipe, and the reflux pipe is connected to a pump;

[0032] The bottoms of the first wastewater sedimentation chamber, the wastewater disinfection chamber, the second wastewater sedimentation chamber and the odor purification chamber are connected by a same multi-branch pipe, and the multi-branch pipe is connected to the water inlet end of the pump;

[0033] The first extraction pump is provided with a shunt pipe, and the other end of the shunt pipe is connected to the water storage tank;

[0034] A control panel is arranged on the outer protective casing, and the control panel is respectively connected with the main water pump, the first one-way pump, the rotating motor, the electric heater, the driving motor and the pump for signal transmission, so as to facilitate the staff to control.

[0035] (III) Beneficial effects

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. In the present invention, the first wastewater discharge pipe is connected to the wastewater hot water tank, the first control valve and the second control valve are opened, the third control valve, the fourth control valve and the fifth control valve are closed, the main pumping pump transports the wastewater in the wastewater hot water tank to the first wastewater discharge pipe through the first wastewater discharge pipe, the first wastewater discharge pipe discharges the wastewater into the heat exchange purification structure, the first wastewater sedimentation chamber is used to perform primary flocculation and sedimentation on the wastewater; the wastewater is disinfected by the wastewater disinfection chamber; the wastewater is secondary flocculation and sedimentation by the second wastewater sedimentation chamber; the impurities in the wastewater can be removed by the activated carbon plate provided It absorbs and purifies odors. After water is passed into the heat exchanger, the wastewater will transfer heat to the inside of the heat exchange plate through the heat exchanger, and heat exchange will be performed while the wastewater is being purified. The water after heat exchange is discharged into the electric heater through the water source discharge pipe. The electric heater will reheat the water after heat exchange. Since the water in the heat exchange plate has undergone heat exchange, the electric heater can reach the required temperature faster, thereby improving the heating efficiency. The heated water is used for bathroom showers. After the wastewater is purified, it will be transported to an external water storage tank through the first extraction pump to provide water for the toilet in the bathroom and for greening on campus.

[0038] 2. In the present invention, during the cleaning process, the first control valve and the second control valve are closed, and the third control valve, the fourth control valve and the fifth control valve are opened. The first extraction pump transports the purified water to the water storage tank through the shunt pipe, and the purified water is transported to the second water storage frame through the second one-way pump, and flows into the first water storage frame through the liquid inlet. The liquid push plate squeezes the liquid between the second water storage frame and the first water storage frame to spray it out from the spray pipe, and then uses the purified water to clean the first wastewater sedimentation chamber. , wastewater disinfection chamber, the second wastewater sedimentation chamber and the odor purification chamber are cleaned, and the cleaned sewage flows into the multi-head branch pipe, and the sewage in the multi-head branch pipe is transported to the return pipe by the pump. Under the action of the main water pump, the sewage flows back from the return pipe to the first wastewater discharge pipe, and flows into the first wastewater discharge pipe through the docking pipe. The sewage in the first wastewater discharge pipe flows into the backwash drain pipe through the main water pump and the first wastewater discharge pipe, and the sewage is discharged into the sewer through the main wastewater discharge pipe to complete the backwashing.

[0039] 3. In the present invention, when the roller moves from the highest point to the lowest point of the corrugated groove, the roller drives the sliding plate to descend, the sliding plate drives the fixed rod to descend, the fixed rod drives the push rod to descend, the push rod descends to squeeze the liquid in the first material box into the one-way discharge nozzle, and the one-way discharge nozzle squeezes the liquid into the wastewater purification water storage tank;

[0040] When the roller moves from the lowest point to the highest point of the corrugated groove, the roller drives the sliding plate to rise, the sliding plate drives the fixed rod to rise, and the fixed rod drives the push rod to rise. At this time, negative pressure is formed inside the first material box, and the one-way discharge nozzle stops discharging liquid. Under the action of pressure, the liquid in the storage box flows into the first material box through the second one-way nozzle, replenishing the liquid for the first material box in time.

[0041] 4. In the present invention, the liquid in the stirring box flows into the material storage box through the discharge pipe and the first one-way nozzle, and the liquid is replenished to the material storage box in time. The solid feeding pipe and the liquid feeding pipe are provided to connect the stirring box with the outside world, ensuring the internal and external air pressure balance of the stirring box and facilitating the flow of liquid.

[0042] 5. In the present invention, corresponding reagents are added to the stirring boxes corresponding to the first wastewater sedimentation chamber, the wastewater disinfection chamber, and the second wastewater sedimentation chamber, and the rotating motor is turned on. The rotating motor drives the rotating rod to rotate through the transmission belt, and the rotating rod drives the cam to rotate. The cam drives the roller to move up and down reciprocatingly, so that the unidirectional discharge nozzle can perform intermittent spraying, which can reduce waste and allow the reagent to fully react with the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A three-dimensional schematic diagram of the present invention as a whole;

[0044] Figure 2 It is an overall three-dimensional schematic diagram of another viewing angle of the present invention;

[0045] Figure 3 A schematic diagram of the interior of the outer protective housing of the present invention;

[0046] Figure 4 A schematic diagram of another perspective of the interior of the outer protective housing of the present invention;

[0047] Figure 5 It is an exploded schematic diagram of the wastewater purification water storage tank, the heat exchange purification structure and the sealed top frame in the present invention;

[0048] Figure 6 It is a schematic diagram of the heat exchange purification structure in the present invention;

[0049] Figure 7 It is a schematic diagram of the heat exchange purification structure of the present invention from a front view perspective;

[0050] Figure 8 for Figure 7 A local enlarged schematic diagram of the middle A;

[0051] Fig. 9 It is a partial exploded schematic diagram of the indirect discharge structure of the present invention;

[0052] Fig.10It is a schematic diagram of the explosion of the stirring box and the stirring rod in the present invention;

[0053] Fig.11 It is a schematic diagram of the protective housing, the sliding rail and the sliding plate in the present invention;

[0054] Fig.12 It is an exploded schematic diagram of the sealing top frame, the first water storage frame, the liquid push plate and the second water storage frame in the present invention;

[0055] Fig.13 It is an exploded schematic diagram of the sealing top frame, the first water storage frame, the liquid push plate and the second water storage frame from another perspective in the present invention;

[0056] Fig.14 It is a schematic cross-sectional view of the interior of the wastewater purification water storage tank in the present invention;

[0057] Fig.15 for Fig.14 A partial enlarged schematic diagram of point B in the middle;

[0058] Fig.16 It is an exploded schematic diagram of the sealed top frame and the first water storage frame in the present invention;

[0059] Fig.17 for Fig.16 A partial enlarged schematic diagram of point C in the middle;

[0060] Fig.18 It is a schematic diagram of the liquid push plate, water storage tank and connecting rod in the present invention.

[0061] In the figure: 1. Main water pump; 2. First wastewater discharge pipe; 3. First wastewater discharge pipe; 4. External protective casing; 5. Heat exchanger; 6. Wastewater purification water storage tank; 7. Insertion port; 8. Heat exchange bottom plate; 9. Heat exchange plate; 10. Sealed top frame; 11. Isolation plug plate; 12. First wastewater sedimentation chamber; 13. Wastewater disinfection chamber; 14. Second wastewater sedimentation chamber; 15. Odor purification chamber; 16. Activated carbon plate; 17. Backwash drain pipe; 18. Main wastewater discharge pipe; 19. Docking pipe; 20, filter plate; 21, first one-way pump; 22, first control valve; 23, second control valve; 24, third control valve; 25, fourth control valve; 26, fifth control valve; 27, protective shell; 28, one-way discharge nozzle; 29, first discharge box; 30, storage box; 31, stirring box; 32, solid feeding pipe; 33, liquid feeding pipe; 34, discharge pipe; 35, first one-way nozzle; 36, second one-way nozzle; 37, rotating base; 38, push rod; 39, rotating rod; 40, cam; 41, sliding track; 42, sliding plate; 43, roller; 44, fixed rod; 45, rotating motor; 46, stirring rod; 47, driving belt; 48, observation window; 49, sliding slot; 50, mesh plate; 51, circulation port; 52, water source inlet pipe; 53, water source outlet pipe; 54, first extraction pump; 55, electric heater; 56, control panel; 57, lowering port; 58, spring; 59, first water storage frame; 60, liquid push plate; 6 1. Spray pipe; 611. Nozzle; 62. Liquid inlet; 63. First inclined portion; 64. Second inclined portion; 65. Second water storage frame; 66. Liquid outlet; 67. Water storage tank; 68. Second one-way pump; 69. Connecting rod; 70. Rack plate; 71. Horizontal mounting table; 72. Driving motor; 73. Support base; 74. Rotating main shaft; 75. Half-tooth gear; 76. Slide; 77. Return spring; 78. Reflux pipe; 79. Pump; 80. Multi-branch pipe; 81. Diverter pipe. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] Embodiment 1

[0064] like Figure 1-Figure 18 As shown, a wastewater purification device for waste heat recovery and utilization includes a main water pump 1 and a heat exchange purification structure, the water inlet end of the main water pump 1 is connected to a first wastewater discharge pipe 2, and the water outlet end of the main water pump 1 is connected to a first wastewater discharge pipe 3;

[0065] The heat exchange purification structure includes an outer protective casing 4, a heat exchanger 5 and an automatic spray structure, such as Figure 3 As shown, a wastewater purification storage tank 6 is fixedly installed in the outer protective housing 4. Figure 5 As shown, an insertion port 7 is provided at one end of the wastewater purification water storage tank 6, and the heat exchanger 5 is slidably connected in the wastewater purification water storage tank 6 through the insertion port 7;

[0066] like Figure 6 As shown, the heat exchanger 5 is composed of a heat exchange bottom plate 8 and a plurality of heat exchange plates 9. The plurality of heat exchange plates 9 are hollow inside and interconnected, and the bottoms of the plurality of heat exchange plates 9 are fixedly connected to the heat exchange bottom plate 8.

[0067] like Figure 5 and Figure 7 As shown, a sealing top frame 10 is detachably mounted on the wastewater purification storage tank 6, the sealing top frame 10 is sealed and connected to the top of the heat exchanger 5, and a plurality of isolation plugs 11 are fixedly connected to the bottom of the sealing top frame 10, and the plurality of isolation plugs 11 divide the interior of the wastewater purification storage tank 6 into a first wastewater sedimentation chamber 12, a wastewater disinfection chamber 13, a second wastewater sedimentation chamber 14 and an odor purification chamber 15 in sequence;

[0068] like Figure 6 and Fig. 9 As shown, the outer side of the wastewater purification storage tank 6 is provided with an indirect discharge structure corresponding to the first wastewater sedimentation chamber 12, the wastewater disinfection chamber 13 and the second wastewater sedimentation chamber 14, and multiple groups of activated carbon plates 16 are inserted in the odor purification chamber 15 to adsorb impurities in the wastewater and purify the odor. The automatic spray structure is installed on the top of the sealed top frame 10;

[0069] The free ends of the first wastewater discharge pipe 3 respectively pass through the outer protective casing 4 and the wastewater purification storage tank 6 and are connected to the first wastewater sedimentation chamber 12. The first wastewater discharge pipe 3 is connected to a backwash drain pipe 17. The free end of the backwash drain pipe 17 is connected to a main wastewater discharge pipe 18. The free end of the main wastewater discharge pipe 18 is connected to the sewer. The first wastewater discharge pipe 2 is connected to the first wastewater discharge pipe 3 through a docking pipe 19.

[0070] Further, such as Figure 5 and Figure 8 As shown, the first wastewater sedimentation chamber 12 and the second wastewater sedimentation chamber 14 are both provided with a filter plate 20, the filter plate 20 is slidably connected to the heat exchanger 5 and the top of the filter plate 20 is detachably mounted on the bottom of the sealing top frame 10, and the bottoms of the plurality of isolation plug plates 11 are each provided with a first one-way pump 21 for promoting the flow of wastewater, and the set filter plate 20 can block the sediment to prevent the sediment from flowing into the first one-way pump 21, as shown in FIG. Figure 1 and Figure 2As shown, the free end of the first wastewater discharge pipe 2 is connected to the first control valve 22, the first wastewater discharge pipe 3 is connected to the second control valve 23, the connection between the first wastewater discharge pipe 3 and the backwash drain pipe 17 is located between the main water pump 1 and the second control valve 23, the backwash drain pipe 17 is connected to the third control valve 24, the docking pipe 19 is connected to the fourth control valve 25, and the main wastewater discharge pipe 18 is connected to the fifth control valve 26.

[0071] Specifically, the first wastewater discharge pipe 2 is connected to the wastewater hot water tank, the first control valve 22 and the second control valve 23 are opened, the third control valve 24, the fourth control valve 25 and the fifth control valve 26 are closed, the main pump 1 transports the wastewater in the wastewater hot water tank through the first wastewater discharge pipe 2 to the first wastewater discharge pipe 3, and the first wastewater discharge pipe 3 discharges the wastewater into the heat exchange purification structure. The fourth control valve 25 can be set to prevent the main pump 1 from transporting the first wastewater discharge pipe 2 to the first wastewater discharge pipe 3, and the first wastewater discharge pipe 3 discharges the wastewater into the heat exchange purification structure. In the process, part of the wastewater in the first wastewater discharge pipe 3 flows back to the first wastewater discharge pipe 2 through the connecting pipe 19, thereby increasing the power consumption of the main water pump 1, and the first wastewater sedimentation chamber 12 is used to perform primary flocculation and sedimentation on the wastewater; the wastewater is disinfected through the wastewater disinfection chamber 13; the wastewater is secondary flocculation and sedimentation through the second wastewater sedimentation chamber 14; the activated carbon plate 16 is provided to adsorb impurities in the wastewater and purify odors; after water is passed into the heat exchanger 5, the wastewater transfers heat to the inside of the heat exchange plate 9 through the heat exchanger 5, and heat exchange is performed while purifying the wastewater.

[0072] Embodiment 2

[0073] like Figure 1-Figure 18 As shown, this embodiment is improved on the basis of the first embodiment as follows: Further, as Figure 9-11 As shown, the indirect discharge structure includes a protective shell 27, a one-way discharge nozzle 28, a first material discharge box 29, a material storage box 30 and a stirring box 31, and the nozzle of the one-way discharge nozzle 28 penetrates the protective shell 27 and the wastewater purification water storage tank 6 and extends into the wastewater purification water storage tank 6;

[0074] A solid feeding pipe 32 and a liquid feeding pipe 33 are respectively provided on one side of the stirring box 31, and a liquid discharge pipe 34 is connected to the bottom of the stirring box 31, and a first one-way nozzle 35 is connected to the free end of the liquid discharge pipe 34 to prevent liquid backflow, and the outlet of the first one-way nozzle 35 is connected to the bottom of the material storage box 30, and a second one-way nozzle 36 is connected to the material storage box 30 to prevent liquid backflow, and the outlet of the second one-way nozzle 36 is connected to the first material discharge box 29, and the first material discharge box 29 is connected to the discharge inlet of the one-way discharge nozzle 28 through a pipeline;

[0075] A rotating base 37 is fixedly connected to one side of the protective shell 27, and a push rod 38 is slidably connected in the first material box 29. The rotating base 37 is located directly above the first material box 29 and is rotatably connected to a rotating rod 39. The rotating base 37 can limit the rotating rod 39. A limiting slide groove is provided on the top of the push rod 38. The bottom end of the rotating rod 39 is slidably connected in the limiting slide groove. The rod body of the rotating rod 39 is fixedly connected to a cam 40, and a corrugated groove is provided on the cam 40.

[0076] The inner wall of the protective shell 27 is provided with a sliding track 41, in which a sliding plate 42 is slidably connected, and a roller 43 and a fixed rod 44 are respectively provided at the upper and lower ends of the sliding plate 42, and the roller 43 is rotatably connected to the corrugated groove provided on the cam 40, and the free end of the fixed rod 44 is fixedly connected to the push rod 38. When the roller 43 moves from the highest point to the lowest point of the corrugated groove, the roller 43 drives the sliding plate 42 to descend, the sliding plate 42 drives the fixed rod 44 to descend, and the fixed rod 44 drives the push rod 38 to descend, and the push rod 38 descends to squeeze the liquid in the first discharge box 29 into the one-way discharge nozzle 28, and the one-way discharge nozzle 28 squeezes the liquid into the wastewater purification water storage tank 6;

[0077] When the roller 43 moves from the lowest point to the highest point of the corrugated groove, the roller 43 drives the sliding plate 42 to rise, the sliding plate 42 drives the fixed rod 44 to rise, and the fixed rod 44 drives the push rod 38 to rise. At this time, negative pressure is formed inside the first material box 29, and the one-way discharge nozzle 28 stops discharging liquid. Under the action of pressure, the liquid in the storage box 30 flows into the first material box 29 through the second one-way nozzle 36, and the liquid is replenished to the first material box 29 in time;

[0078] At the same time, the liquid in the stirring box 31 flows into the storage box 30 through the discharge pipe 34 and the first one-way nozzle 35, and the liquid is replenished to the storage box 30 in time. The solid feeding pipe 32 and the liquid feeding pipe 33 are provided to connect the stirring box 31 with the outside world, ensuring the internal and external air pressure balance of the stirring box 31 and facilitating the flow of liquid.

[0079] Furthermore, a rotating motor 45 is fixedly connected to one side of the protective housing 27 provided with the rotating base 37. The rotating motor 45 is located directly above the stirring box 31 and a stirring rod 46 is fixedly connected to the rotating shaft end of the rotating motor 45. The stirring rod 46 is located in the stirring box 31. The solid in the stirring box 31 can be fully mixed and dissolved in the liquid by the provided stirring rod 46.

[0080] A transmission belt 47 is sleeved on the rotating shaft of the rotating motor 45 , and the other end of the transmission belt 47 is sleeved on the rotating rod 39 .

[0081] Specifically, corresponding reagents are added to the stirring boxes 31 corresponding to the first wastewater sedimentation chamber 12, the wastewater disinfection chamber 13, and the second wastewater sedimentation chamber 14, and the rotating motor 45 is turned on. The rotating motor 45 drives the rotating rod 39 to rotate through the transmission belt 47, and the rotating rod 39 drives the cam 40 to rotate. The cam 40 drives the roller 43 to move up and down, so that the one-way discharge nozzle 28 performs intermittent spraying, and then the wastewater is purified. The one-way discharge nozzle 28 performs intermittent spraying, which reduces waste and allows the reagent to fully react with the wastewater.

[0082] Embodiment 3

[0083] like Figure 1-Figure 18 As shown, this embodiment is improved on the basis of the second embodiment as follows: further, as Fig. 9 As shown, an observation window 48 is provided on the stirring box 31, so that when the staff adds materials to the stirring box 31, they can see the liquid level of the stirring box 31 through the observation window 48;

[0084] The top of the protective shell 27 is open and has sliding slots 49 on both sides. A transparent mesh plate 50 is inserted into the sliding slot 49. The heat generated by the rotating motor 45 during operation can be dissipated through the mesh plate 50 in time.

[0085] Embodiment 4

[0086] like Figure 1-Figure 18 As shown, this embodiment is improved on the basis of the second embodiment as follows: further, as Figure 6-Figure 8 As shown, a plurality of heat exchange plates 9 are provided with a plurality of flow openings 51, so that the wastewater in the wastewater purification storage tank 6 can flow between the heat exchange plates 9, as shown in FIG. Figure 6As shown, one end of the heat exchanger 5 near the insertion port 7 is connected with a water source inlet pipe 52 and a water source outlet pipe 53, and a first extraction pump 54 is arranged at the bottom of the wastewater purification water storage tank 6. The water inlet end of the first extraction pump 54 passes through the wastewater purification water storage tank 6 and the heat exchange bottom plate 8 and is connected to the bottom of one side of the odor purification chamber 15 near the insertion port 7. The water outlet end of the first extraction pump 54 is connected to the external water storage tank. After the wastewater is purified, it will be transported to the external water storage tank through the first extraction pump 54, which is used to provide water for the toilet in the bathroom and the greening on the campus, thereby reducing the waste of water resources. The water source outlet pipe 53 is connected with an electric heater 55, and the water outlet of the electric heater 55 The end is connected with the shower pipe of the bathroom. Specifically, the water source inlet pipe 52 is connected with the external water source equipment, and then the clean water is discharged into the heat exchange plate 9 through the water source inlet pipe 52 for heat exchange. The water after heat exchange is discharged into the electric heater 55 through the water source discharge pipe 53. The electric heater 55 will reheat the water after heat exchange. Since the water in the heat exchange plate 9 has undergone heat exchange, the electric heater 55 can reach the required temperature faster, thereby improving the heating efficiency. The heated water is used for bathroom spraying, and the waste water is purified and then transported to the external water storage tank through the first extraction pump 54, thereby providing water for the toilet in the bathroom and the greening on the campus.

[0087] Embodiment 5

[0088] like Figure 1-Figure 18 As shown, this embodiment is improved as follows on the basis of the fourth embodiment: further, as Fig.16 and Fig.17 As shown, the top of the sealing top frame 10 is open and a plurality of lower openings 57 are provided at the bottom. Fig.15 As shown, a plurality of springs 58 are provided on the sealing top frame 10. Figure 12-Figure 15 As shown, the automatic spray structure includes a first water storage frame 59, a liquid push plate 60 and a plurality of spray pipes 61. Fig.16 and Fig.17 As shown, a plurality of spray pipes 61 correspond to the lower discharge port 57 one by one and are located in the lower discharge port 57, so as to prevent the chemicals in the wastewater from corroding the spray pipe 61 during the purification process of the wastewater, so that the entire first water storage frame 59 with the spray pipe 61 needs to be dismantled and replaced, and the replacement cost is high. A nozzle 611 is detachably installed at the bottom of the spray pipe 61. During regular maintenance, the staff only needs to replace the damaged nozzle 611, which greatly reduces the maintenance time and cost. The first water storage frame 59 is located above the sealing top frame 10. The first water storage frame 59 is hollow inside and the lower surface is fixedly connected with the top of the spray pipe 61 in an integrated manner. The lower surface of the first water storage frame 59 is in contact with the spring 58. A liquid inlet 62 is provided on one side of the top of the first water storage frame 59. A first inclined portion 63 is also provided on the top of the first water storage frame 59. The thickness of the first inclined portion 63 gradually increases along the direction of the liquid inlet 62.

[0089] The upper surface of the first water storage frame 59 is slidably connected to a liquid pushing plate 60, and the lower surface of the liquid pushing plate 60 is provided with a second inclined portion 64, and the second inclined portion 64 is in contact with the first inclined portion 63. The upper surface of the liquid pushing plate 60 is horizontal and slidably connected to a second water storage frame 65, and the second water storage frame 65 is fixedly mounted on the sealing top frame 10, and the second water storage frame 65 is provided with a liquid outlet 66 corresponding to the liquid inlet 62.

[0090] Specifically, when the liquid push plate 60 moves to the right, the second inclined portion 64 will squeeze the first inclined portion 63, and the squeezing force will increase with the increase of the thickness of the first inclined portion 63. At this time, the squeezed first water storage frame 59 will move downward, and the spring 58 on the lower surface of the first water storage frame 59 will be compressed, and the nozzle 611 will extend from the lower discharge port 57. At the same time, when the liquid push plate 60 moves to the right, it will squeeze the liquid between the second water storage frame 65 and the first water storage frame 59, so that it will be sprayed out from the spray pipe 61, and then the first wastewater sedimentation chamber 12, the wastewater disinfection chamber 13, the second wastewater sedimentation chamber 14 and the odor purification chamber 15 are cleaned with the purified water, and the cleaned sewage flows into the multi-head branch pipe 80;

[0091] Further, such as Fig.14 As shown, the automatic spray structure further includes a water storage tank 67, the water storage tank 67 is connected to a second one-way pump 68, and the liquid outlet of the second one-way pump 68 is connected to the second water storage frame 65;

[0092] like Fig.14 and Fig.15 As shown, a plurality of connecting rods 69 are fixedly connected to the top of the liquid push plate 60, and a rack plate 70 is embedded at the bottom of the plurality of connecting rods 69;

[0093] like Fig.18 As shown, a horizontal mounting platform 71 is provided on one side of the water tank 67, and a driving motor 72 and a plurality of supporting bases 73 are installed on the horizontal mounting platform 71. The plurality of supporting bases 73 are rotatably connected to the same rotating main shaft 74, and the rotating main shaft 74 is supported by the provided supporting base 73. The rotating shaft of the driving motor 72 is fixedly connected to the rotating main shaft 74, and the rotating main shaft 74 is provided with a half-tooth gear 75 corresponding to the plurality of rack plates 70 one by one, and the half-tooth gear 75 is meshed with the rack plate 70.

[0094] Further, such as Fig.15 As shown, a slide groove 76 is provided on the top of the water tank 67 , a return spring 77 is installed in the slide groove 76 , and the free end of the connecting rod 69 is slidably connected in the slide groove 76 and abuts against the return spring 77 .

[0095] Further, such as Figure 7As shown, the first wastewater discharge pipe 3 is connected to a return pipe 78, and the return pipe 78 is connected to a pump 79;

[0096] The bottoms of the first wastewater sedimentation chamber 12, the wastewater disinfection chamber 13, the second wastewater sedimentation chamber 14 and the odor purification chamber 15 are connected by a same multi-branch pipe 80, and the multi-branch pipe 80 is connected to the water inlet end of the pump 79;

[0097] like Figure 4 As shown, a shunt pipe 81 is provided on the first extraction pump 54, and the other end of the shunt pipe 81 is connected to the water storage tank 67;

[0098] like Figure 2 As shown, a control panel 56 is provided on the outer protective casing 4, and the control panel 56 is respectively connected with the main water pump 1, the first one-way pump 21, the rotating motor 45, the electric heater 55, the driving motor 72, and the pump 79 for signal transmission, so as to facilitate the staff to control.

[0099] Specifically, when the first wastewater sedimentation chamber 12, the wastewater disinfection chamber 13, the second wastewater sedimentation chamber 14 and the odor purification chamber 15 need to be cleaned, the first extraction pump 54 transports the purified water to the water storage tank 67 through the shunt pipe 81, and the purified water is transported to the second water storage frame 65 through the second one-way pump 68, and flows into the first water storage frame 59 through the liquid inlet 62;

[0100] When the driving motor 72 is working, the driving motor 72 drives the rotating main shaft 74 to rotate, and the rotating main shaft 74 drives the half-tooth gear 75 to rotate clockwise. Through the meshing action, the rack plate 70 drives the connecting rod 69 to move rightward. At this time, the return spring 77 is in a compressed state, and the connecting rod 69 drives the liquid push plate 60 to move rightward. At this time, the second inclined portion 64 will squeeze the first inclined portion 63, and the squeezing force increases with the increase of the thickness of the first inclined portion 63. The squeezed first water storage frame 59 will move downward, and the spring 58 on the lower surface of the first water storage frame 59 will be compressed, and the nozzle 611 will extend from the lower discharge port 57;

[0101] When the liquid push plate 60 moves to the right, the liquid push plate 60 squeezes the liquid between the second water storage frame 65 and the first water storage frame 59, so that the liquid is sprayed out from the spray pipe 61, and then the first wastewater sedimentation chamber 12, the wastewater disinfection chamber 13, the second wastewater sedimentation chamber 14 and the odor purification chamber 15 are cleaned with the purified water, and the cleaned wastewater flows into the multi-head branch pipe 80;

[0102] When the half-toothed gear 75 stops meshing with the rack plate 70, the reset spring 77 is stretched and reset, and pushes the connecting rod 69 to move to the left, and at the same time pushes the liquid push plate 60 to move in the same direction. During the movement of the liquid push plate 60 to the left, the squeezing force of the second inclined portion 64 on the first inclined portion 63 will gradually decrease, and the spring 58 is stretched and reset and pushes the first water storage frame 59 to reset it. At the same time, the second one-way pump 68 will transport the liquid in the water storage tank 67 to the second water storage frame 65, so as to replenish the water source for the second water storage frame 65 in time;

[0103] During cleaning, close the first control valve 22 and the second control valve 23, open the third control valve 24, the fourth control valve 25 and the fifth control valve 26, and transport the sewage in the multi-branch pipe 80 to the return pipe 78 through the pump 79. Under the action of the main water pump 1, the sewage flows back from the return pipe 78 to the first wastewater discharge pipe 3, and flows into the first wastewater discharge pipe 2 through the docking pipe 19. The sewage in the first wastewater discharge pipe 2 flows into the backwash drain pipe 17 through the main water pump 1 and the first wastewater discharge pipe 3, and is discharged into the sewer through the main wastewater discharge pipe 18 to complete the backwashing.

[0104] In summary, the workflow of the present invention is:

[0105] S1: Set the heating temperature of the electric heater 55 on the control panel 56, connect the first wastewater discharge pipe 2 to the wastewater hot water tank, open the first control valve 22 and the second control valve 23, close the third control valve 24, the fourth control valve 25 and the fifth control valve 26, and the main pump 1 transports the wastewater in the wastewater hot water tank to the first wastewater discharge pipe 3 through the first wastewater discharge pipe 2. The first wastewater discharge pipe 3 discharges the wastewater into the first wastewater sedimentation chamber 12. Under the action of the first one-way pump 21, the wastewater passes through the wastewater disinfection chamber 13, the second wastewater sedimentation chamber 14 and the odor purification chamber 15 in sequence for purification;

[0106] Among them, the first wastewater sedimentation chamber 12 and the indirect discharge structure corresponding to it are used to carry out the initial flocculation and sedimentation of the wastewater; the wastewater is disinfected through the wastewater disinfection chamber 13 and the indirect discharge structure corresponding to it; the wastewater is secondary flocculation and sedimentation through the second wastewater sedimentation chamber 14 and the indirect discharge structure corresponding to it; the wastewater is odor purified through the odor purification chamber 15, the water source inlet pipe 52 is connected with the external water source equipment, and then the clean water is discharged into the heat exchange plate 9 through the water source inlet pipe 52 for heat exchange, and the water after heat exchange is discharged into the electric heater 55 through the water source discharge pipe 53, and the electric heater 55 will perform secondary heating on the water after heat exchange. Due to the heat exchange of the water in the heat exchange plate 9, the electric heater 55 can reach the required temperature faster, thereby improving the heating efficiency. After the wastewater is purified, it will be transported to the external water storage tank through the first extraction pump 54, thereby providing water for the toilet in the bathroom and the greening on the campus.

[0107] S2: When it is necessary to clean the first wastewater sedimentation chamber 12, the wastewater disinfection chamber 13, the second wastewater sedimentation chamber 14 and the odor purification chamber 15, close the first control valve 22 and the second control valve 23, open the third control valve 24, the fourth control valve 25 and the fifth control valve 26, and the first extraction pump 54 transports the purified water to the water storage tank 67 through the shunt pipe 81, and transports the purified water to the second water storage frame 65 through the second one-way pump 68, and flows into the first water storage frame 59 through the liquid inlet 62.

[0108] S3: Turn on the drive motor 72, the drive motor 72 drives the rotating main shaft 74 to rotate, and the rotating main shaft 74 drives the half-tooth gear 75 to rotate clockwise. Through the meshing action, the rack plate 70 drives the connecting rod 69 to move rightward. At this time, the return spring 77 is in a compressed state, and the connecting rod 69 drives the liquid push plate 60 to move rightward. At this time, the second inclined portion 64 will squeeze the first inclined portion 63, and the squeezing force increases with the increase of the thickness of the first inclined portion 63. The squeezed first water storage frame 59 will move downward, and the spring 58 on the lower surface of the first water storage frame 59 will be compressed, and the nozzle 611 will extend from the lower discharge port 57;

[0109] When the liquid push plate 60 moves to the right, the liquid push plate 60 will squeeze the liquid between the second water storage frame 65 and the first water storage frame 59, so that it will be sprayed out from the spray pipe 61, and then the first wastewater sedimentation chamber 12, the wastewater disinfection chamber 13, the second wastewater sedimentation chamber 14 and the odor purification chamber 15 are cleaned with the purified water, and the cleaned sewage flows into the multi-head branch pipe 80; the sewage in the multi-head branch pipe 80 is transported to the return pipe 78 by the pump 79, and under the action of the main water pump 1, the sewage flows back from the return pipe 78 to the first wastewater discharge pipe 3, and flows into the first wastewater discharge pipe 2 through the docking pipe 19, and the sewage in the first wastewater discharge pipe 2 flows into the backwash drain pipe 17 through the main water pump 1 and the first wastewater discharge pipe 3, and the sewage is discharged through the main wastewater discharge pipe 18 to complete the backwashing.

[0110] S4: When the half-toothed gear 75 stops meshing with the rack plate 70, the reset spring 77 is stretched and reset, and pushes the connecting rod 69 to move to the left, while pushing the liquid push plate 60 to move in the same direction. During the movement of the liquid push plate 60 to the left, the squeezing force of the second inclined portion 64 on the first inclined portion 63 will gradually decrease, and the spring 58 is stretched and reset and pushes the first water storage frame 59 to reset it. At the same time, the second unidirectional pump 68 will transport the liquid in the water tank 67 to the second water storage frame 65, so as to replenish the water source for the second water storage frame 65 in time.

[0111] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0112] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0113] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater purification device for waste heat recovery, characterized in that: It comprises a main water pump (1) and a heat exchange purification structure, wherein the water inlet end of the main water pump (1) is connected to a first wastewater discharge pipe (2), and the water outlet end of the main water pump (1) is connected to a first wastewater discharge pipe (3); The heat exchange purification structure comprises an outer protective casing (4), a heat exchanger (5) and an automatic spray structure; a wastewater purification water storage tank (6) is fixedly installed in the outer protective casing (4); an insertion port (7) is provided at one end of the wastewater purification water storage tank (6); and the heat exchanger (5) is slidably connected to the wastewater purification water storage tank (6) via the insertion port (7); The heat exchanger (5) is composed of a heat exchange bottom plate (8) and a plurality of heat exchange plates (9); the plurality of heat exchange plates (9) are hollow inside and are interconnected; and the bottoms of the plurality of heat exchange plates (9) are fixedly connected to the heat exchange bottom plate (8); A sealing top frame (10) is detachably mounted on the wastewater purification storage tank (6), the sealing top frame (10) being sealingly connected to the top of the heat exchanger (5), and a plurality of isolation plugs (11) being fixedly connected to the bottom of the sealing top frame (10), the plurality of isolation plugs (11) dividing the interior of the wastewater purification storage tank (6) into a first wastewater sedimentation chamber (12), a wastewater disinfection chamber (13), a second wastewater sedimentation chamber (14) and an odor purification chamber (15) in sequence; The wastewater purification storage tank (6) is provided with an indirect discharge structure corresponding to the first wastewater sedimentation chamber (12), the wastewater disinfection chamber (13) and the second wastewater sedimentation chamber (14) on a one-to-one basis on the outside thereof; a plurality of groups of activated carbon plates (16) are inserted into the odor purification chamber (15); and the automatic spray structure is installed on the top of the sealed top frame (10); The free ends of the first wastewater discharge pipe (3) respectively penetrate the outer protective casing (4) and the wastewater purification storage tank (6) and are connected to the first wastewater sedimentation chamber (12); the first wastewater discharge pipe (3) is connected to a backwashing drainage pipe (17); the free end of the backwashing drainage pipe (17) is connected to a main wastewater discharge pipe (18); the free end of the main wastewater discharge pipe (18) is connected to a sewer; the first wastewater discharge pipe (2) is connected to the first wastewater discharge pipe (3) via a butt pipe (19); The indirect discharge structure comprises a protective shell (27), a one-way discharge nozzle (28), a first discharge box (29), a storage box (30) and a stirring box (31); a nozzle of the one-way discharge nozzle (28) penetrates the protective shell (27) and the wastewater purification storage tank (6) and extends into the wastewater purification storage tank (6); A solid feeding pipe (32) and a liquid feeding pipe (33) are respectively provided on one side of the stirring box (31); a liquid discharge pipe (34) is connected to the bottom of the stirring box (31); a free end of the liquid discharge pipe (34) is connected to a first one-way nozzle (35); an outlet of the first one-way nozzle (35) is connected to the bottom of the material storage box (30); a second one-way nozzle (36) is connected to the material storage box (30); an outlet of the second one-way nozzle (36) is connected to the first material discharge box (29); and the first material discharge box (29) is connected to a discharge inlet of the one-way discharge nozzle (28) through a pipeline; A rotating base (37) is fixedly connected to one side of the protective shell (27); a push rod (38) is slidably connected to the first material discharge box (29); the rotating base (37) is located directly above the first material discharge box (29) and is rotatably connected to a rotating rod (39); a limiting slide groove is provided on the top of the push rod (38); the bottom end of the rotating rod (39) is slidably connected to the limiting slide groove; a cam (40) is fixedly connected to the rod body of the rotating rod (39); and a corrugated groove is provided on the cam (40); The inner side wall of the protective housing (27) is provided with a sliding track (41), a sliding plate (42) is slidably connected to the sliding track (41), a roller (43) and a fixing rod (44) are respectively provided at the upper and lower ends of the sliding plate (42), the roller (43) is rotatably connected to a corrugated groove provided on the cam (40), and the free end of the fixing rod (44) is fixedly connected to the push rod (38); The top of the sealing top frame (10) is open and the bottom is provided with a plurality of lower openings (57). The sealing top frame (10) is provided with a plurality of springs (58). The automatic spraying structure comprises a first water storage frame (59), a liquid push plate (60) and a plurality of spraying pipes (61). The plurality of spraying pipes (61) correspond to the lower openings (57) one by one and are located in the lower openings (57). A spray head (611) is detachably mounted on the bottom of the spraying pipe (61). The first water storage frame (59) is provided with a plurality of springs (58). 9) is located above the sealing top frame (10), the first water storage frame (59) is hollow inside and the lower surface is fixedly connected with the top of the spray pipe (61) in an integral manner, the lower surface of the first water storage frame (59) is in contact with the spring (58), a liquid inlet (62) is provided on one side of the top of the first water storage frame (59), and a first inclined portion (63) is also provided on the top of the first water storage frame (59), and the thickness of the first inclined portion (63) gradually increases along the direction of the liquid inlet (62); The upper surface of the first water storage frame (59) is slidably connected to a liquid push plate (60), the lower surface of the liquid push plate (60) is provided with a second inclined portion (64), the second inclined portion (64) is in contact with the first inclined portion (63), the upper surface of the liquid push plate (60) is horizontal and slidably connected to a second water storage frame (65), the second water storage frame (65) is fixedly mounted on the sealing top frame (10), and the second water storage frame (65) is provided with a liquid outlet (66) corresponding to the liquid inlet (62); The automatic spray structure further comprises a water storage tank (67), the water storage tank (67) being connected to a second one-way pump (68), and the liquid outlet of the second one-way pump (68) being connected to the second water storage frame (65); A plurality of connecting rods (69) are fixedly connected to the top of the liquid push plate (60), and a rack plate (70) is embedded at the bottom of each of the plurality of connecting rods (69); A horizontal mounting platform (71) is provided on one side of the water storage tank (67), and a driving motor (72) and a plurality of supporting bases (73) are mounted on the horizontal mounting platform (71), and the plurality of supporting bases (73) are rotatably connected to a same rotating main shaft (74), and the rotating shaft of the driving motor (72) is fixedly connected to the rotating main shaft (74), and the rotating main shaft (74) is provided with a half-toothed gear (75) corresponding to the plurality of rack plates (70), and the half-toothed gear (75) is meshed with the rack plate (70); A slide groove (76) is provided on the top of the water storage tank (67), a return spring (77) is installed in the slide groove (76), and the free end of the connecting rod (69) is slidably connected in the slide groove (76) and abuts against the return spring (77); A filter plate (20) is provided in each of the first wastewater sedimentation chamber (12) and the second wastewater sedimentation chamber (14); the filter plate (20) is slidably connected to the heat exchanger (5) and the top of the filter plate (20) is detachably mounted on the bottom of the sealing top frame (10); a first one-way pump (21) is provided at the bottom of each of the plurality of isolation plug plates (11); a first control valve (22) is connected to the free end of the first wastewater discharge pipe (2); a second control valve (23) is connected to the first wastewater discharge pipe (3); a connection point between the first wastewater discharge pipe (3) and the backwash drainage pipe (17) is located between the main pumping pump (1) and the second control valve (23); a third control valve (24) is connected to the backwash drainage pipe (17); a fourth control valve (25) is connected to the butt joint pipe (19); and a fifth control valve (26) is connected to the main wastewater discharge pipe (18); A rotating motor (45) is fixedly connected to one side of the protective housing (27) on which the rotating base (37) is provided. The rotating motor (45) is located directly above the stirring box (31). A stirring rod (46) is fixedly connected to the rotating shaft end of the rotating motor (45). The stirring rod (46) is located in the stirring box (31). A transmission belt (47) is also sleeved on the rotating shaft of the rotating motor (45), and the other end of the transmission belt (47) is sleeved on the rotating rod (39).

2. The wastewater purification equipment for waste heat recovery according to claim 1, characterized in that: The stirring box (31) is provided with an observation window (48); The top of the protective shell (27) is open and has sliding slots (49) on both sides, and transparent mesh plates (50) are inserted into the sliding slots (49).

3. The wastewater purification equipment for waste heat recovery according to claim 1, characterized in that: A plurality of flow ports (51) are provided on the plurality of heat exchange plates (9); one end of the heat exchanger (5) close to the insertion port (7) is connected to a water source inlet pipe (52) and a water source outlet pipe (53); a first extraction pump (54) is provided at the bottom of the wastewater purification water storage tank (6); a water inlet end of the first extraction pump (54) penetrates the wastewater purification water storage tank (6) and the heat exchange bottom plate (8) and is connected to the bottom of one side of the odor purification chamber (15) close to the insertion port (7); a water outlet end of the first extraction pump (54) is connected to an external water storage tank; the water source outlet pipe (53) is connected to an electric heater (55); and a water outlet end of the electric heater (55) is connected to a shower pipe in the bathroom.

4. The wastewater purification equipment for waste heat recovery according to claim 3 is characterized in that: The first wastewater discharge pipe (3) is connected to a return pipe (78), and the return pipe (78) is connected to a pump (79); The bottoms of the first wastewater sedimentation chamber (12), the wastewater disinfection chamber (13), the second wastewater sedimentation chamber (14) and the odor purification chamber (15) are connected by a common multi-branch pipe (80), and the multi-branch pipe (80) is connected to the water inlet end of the pump (79); The first extraction pump (54) is provided with a shunt pipe (81), and the other end of the shunt pipe (81) is connected to the water storage tank (67); A control panel (56) is provided on the outer protective casing (4), and the control panel (56) is respectively connected to the main water pump (1), the first unidirectional pump (21), the rotary motor (45), the electric heater (55), the drive motor (72), and the pump (79) for signal transmission, so as to facilitate control by staff.

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