Energy-saving waste water circulating treatment waste heat recovery equipment

Abstract

The application discloses an energy-saving waste heat recovery equipment for wastewater recycling treatment, and relates to the field of wastewater treatment.The equipment main body is internally divided into a natural sedimentation chamber and a chemical reaction sedimentation chamber by a partition plate.A heat exchange assembly is arranged in the chemical reaction sedimentation chamber, one end of the heat exchange assembly is connected with a main water pipe joint, and the other end of the heat exchange assembly is connected to the upper side of the natural sedimentation chamber through a circulating pipeline.A suspended floating impurity filtering assembly is arranged in the natural sedimentation chamber, and is used for filtering suspended and floating impurities in wastewater.The heat energy carried by the heat exchange assembly can be converted into the wastewater for subsequent chemical reaction sedimentation, so as to provide part or all of the heat energy required for increasing the reaction speed, thereby realizing self-supply and recovery of the heat energy, avoiding waste of the heat energy in the hot wastewater, and achieving the energy-saving effect.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more particularly to an energy-saving wastewater recycling and waste heat recovery device. Background Technology

[0002] As is generally known, wastewater treatment uses physical, chemical, and biological methods to treat wastewater, purify it, reduce pollution, and achieve wastewater recycling and reuse, making full use of water resources. Commonly used agents in wastewater treatment include flocculants, coagulants, and conditioners.

[0003] For example, the authorization announcement number is CN114835275B, the authorization announcement date is 2023.07.25, and the name is a hot-dip galvanizing wastewater treatment and reuse process, which includes the following steps: (1) Pretreatment of pickling wastewater, the treatment method is: S1, add polyacrylonitrile fiber and alkaline agent to pickling wastewater, adjust the pH value of the system to 4-5, and obtain the first-level treatment liquid; S2, add sodium alginate to the first-level treatment liquid, precipitate and filter, and obtain the pretreated pickling wastewater; (2) Acid treatment: mix the pretreated pickling wastewater with pickling rinsing wastewater, adjust the pH to 6-7, aerate, precipitate and filter, and add the filtrate to the pickling liquid and pickling rinsing liquid for reuse; (3) Cooling water wastewater treatment: filter to remove zinc oxide, and add the filtrate to the fluxing process for reuse...

[0004] As mentioned in the above application, in most cases, hot wastewater needs to undergo chemical precipitation. Before chemical precipitation, in order to ensure that the content of impurities in the wastewater is as low as possible during the chemical treatment process and to facilitate subsequent treatment, the hot wastewater is generally allowed to settle naturally. That is, the hot wastewater is left to settle in its natural state without any treatment. This results in the direct waste of heat energy in the hot wastewater during natural precipitation. Furthermore, during chemical precipitation, it is often necessary to reheat the cooled wastewater using additional heating equipment to improve the reaction efficiency, which also wastes energy. Summary of the Invention

[0005] (I) Purpose of the Invention

[0006] In view of this, the purpose of this invention is to propose an energy-saving wastewater recycling and waste heat recovery device, which can transfer the heat energy carried by the original hot wastewater to the wastewater that is subsequently precipitated by chemical reaction through heat exchange components before the original hot wastewater settles naturally, providing it with some or all of the heat energy required to increase the reaction rate, thereby achieving self-supply and recovery of heat energy, avoiding the waste of heat energy in hot wastewater, and achieving the effect of energy saving.

[0007] (II) Technical Solution

[0008] To achieve the above technical objectives, this invention provides an energy-saving wastewater recycling and waste heat recovery device, comprising a main body. The internal space of the main body is divided into a natural sedimentation chamber and a chemical reaction sedimentation chamber by a partition plate. The natural sedimentation chamber is located above the chemical reaction sedimentation chamber. One end of the partition plate has a connecting guide hole to connect the natural sedimentation chamber and the chemical reaction sedimentation chamber. A heat exchange component is installed in the chemical reaction sedimentation chamber. One end of the heat exchange component is connected to a main water pipe connector, and the other end of the heat exchange component is connected to the upper side of the natural sedimentation chamber through a circulation pipeline. This allows wastewater with heat energy to enter the natural sedimentation chamber for sedimentation after heat exchange in the chemical reaction sedimentation chamber. A suspended impurity filter component is installed in the natural sedimentation chamber to filter suspended and floating impurities in the wastewater.

[0009] As a further description of the above technical solution: the natural sedimentation chamber is divided into a primary sedimentation chamber, a secondary sedimentation chamber and a tertiary sedimentation chamber in the vertical direction from top to bottom, wherein the filtration coefficient of the suspended impurity filtration components in the primary sedimentation chamber, the secondary sedimentation chamber and the tertiary sedimentation chamber gradually decreases.

[0010] As a further description of the above technical solution: a liquid level monitor is installed above the inner wall of each of the primary sedimentation chamber, the secondary sedimentation chamber and the tertiary sedimentation chamber. The liquid level monitor is used to monitor the liquid level height inside the primary sedimentation chamber, the secondary sedimentation chamber and the tertiary sedimentation chamber, and to determine whether the suspended impurity filtration components in the primary sedimentation chamber, the secondary sedimentation chamber and the tertiary sedimentation chamber are blocked.

[0011] As a further description of the above technical solution: the suspended impurity filtration assembly includes an overflow plate, a filter plate, and a filter plate cleaning assembly. The overflow plate is vertically installed above the partition plates inside the primary sedimentation chamber, secondary sedimentation chamber, and tertiary sedimentation chamber, dividing the primary, secondary, and tertiary sedimentation chambers into a sedimentation area and a filtration overflow area. The sedimentation area is used for wastewater sedimentation, and the filtration overflow area connects the upper and lower sedimentation chambers. A connecting guide hole is opened in the filtration overflow area. The filter plate is installed on top of the overflow plate along its length. The filter plate cleaning assembly is installed on the side of the filter plate opposite the sedimentation area and is used to clean the filter plate surface when blockage occurs.

[0012] As a further description of the above technical solution: the filter plate cleaning assembly includes a first scraper and a screw control structure, wherein the first scraper is movably mounted on one side of the filter plate and can move along the length direction of the filter plate under the action of the screw control structure.

[0013] As a further description of the above technical solution: the filter plate cleaning assembly also includes a baffle and a servo motor. The baffle is rotatably mounted on one side of the filter plate relative to the sedimentation area via a rotating shaft. The length of the baffle is the same as that of the filter plate. The servo motor is mounted on the outside of the main body of the equipment. The output shaft of the servo motor is connected to the rotating shaft of the baffle. The first scraper has a V-shaped structure. The filter plate is installed at an angle. The baffle has two states under the drive of the servo motor: one is a standby state where the baffle rotates to a standby state where one side is in contact with the side of the overflow plate, and the other is a working state where the baffle rotates to a working state where it forms a certain angle with the filter plate. In the working state, both sides of the first scraper are in contact with the surfaces of the baffle and the filter plate, respectively. In the working state, the angle between the baffle and the horizontal direction is set as ∠α, where 0° < ∠α < 90°.

[0014] As a further description of the above technical solution: a collection chamber is installed on one end of the overflow plate relative to the side of the filter overflow area, and a slag discharge port is opened at the position of the collection chamber on the filter plate. A barrier door is rotatably installed inside the slag discharge port. An electric push rod for controlling the opening and closing of the barrier door is installed inside the collection chamber, and a sewage pipe connector is installed at the lower end of one end of the collection chamber.

[0015] As a further description of the above technical solution: both the natural sedimentation chamber and the chemical reaction sedimentation chamber are equipped with sediment cleaning components at their lower interiors, which are used to periodically clean the sediment in the natural sedimentation chamber and the chemical reaction sedimentation chamber. The sediment cleaning components include a scraper and a screw control structure. The scraper is slidably installed on the inner bottom plate of the natural sedimentation chamber and the chemical reaction sedimentation chamber along the length or width direction. The screw control structure can control the scraper to move along the length or width direction of the natural sedimentation chamber and the chemical reaction sedimentation chamber. The scraper adopts a double-arc "V" shaped structure, and slag collection chambers are opened along the length direction at the middle position on both sides of the scraper.

[0016] As a further description of the above technical solution: the bottoms of the two slag collection chambers are connected, and the highest point of the connection is lower than the lowest point of the opening of the slag collection chamber. A second scraper and a screw control structure that can control the movement of the second scraper along the length of the slag collection chamber are also installed inside the slag collection chamber. A suction channel is opened at the same end of both slag collection chambers. A suction pipe joint that can be connected to the sewage pump pipeline is provided on the outside of the main body of the equipment. The suction channel and the suction pipe joint are connected by a suction pipeline. The suction pipeline includes a Y-type tee fitting and a suction hose connected to the main pipe joint of the Y-type tee fitting. The other two branch pipes of the Y-type tee fitting are respectively connected above the two suction channels.

[0017] As a further description of the above technical solution: the heat exchange assembly includes a heat exchange tube group and heat exchange fins, wherein the heat exchange tube group adopts a continuous S-shaped pipe structure, and the heat exchange fins are installed at equal intervals on the outside of the heat exchange tube group.

[0018] In the above technical solution, the waste heat recovery equipment for wastewater recycling provided by the present invention can convert the heat energy carried by itself into the wastewater that is subsequently precipitated by chemical reaction through heat exchange components before the original hot wastewater settles naturally, providing it with part or all of the heat energy required to increase the reaction rate, thereby realizing the self-supply and recovery of heat energy, avoiding the waste of heat energy in hot wastewater, and achieving the effect of energy saving.

[0019] In this equipment, each natural sedimentation chamber is equipped with a suspended impurity filtration component, and the bottom of each sedimentation chamber is equipped with a sediment cleaning component. Through the overall structural design of the suspended impurity filtration component and the sediment cleaning component, the cleaning of the suspended impurity filtration component and the sediment does not require the equipment to be shut down, thus not affecting the operation of the equipment. At the same time, the suspended impurity filtration component is also equipped with an automatic clogging control and cleaning structure, which can prevent the suspended impurity filtration component from becoming clogged. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This invention provides an overall structural schematic diagram of a waste heat recovery device for energy-saving wastewater recycling treatment.

[0022] Figure 2 Another perspective structural schematic diagram of an energy-saving wastewater recycling and waste heat recovery device provided by the present invention;

[0023] Figure 3 A schematic diagram of the internal structure of a waste heat recovery device for energy-saving wastewater recycling treatment provided by the present invention;

[0024] Figure 4 A schematic diagram of the suspended impurity filter component in an energy-saving wastewater recycling and heat recovery device provided by the present invention;

[0025] Figure 5 This invention provides an energy-saving wastewater recycling and waste heat recovery device. Figure 4 Enlarged structural diagram of area A in the middle;

[0026] Figure 6 Another perspective structural schematic diagram of the suspended impurity filter component in an energy-saving wastewater recycling and waste heat recovery device provided by the present invention;

[0027] Figure 7 A schematic cross-sectional view of the installation collection chamber location in a suspended impurity filter assembly of an energy-saving wastewater recycling and waste heat recovery device provided by the present invention.

[0028] Figure 8 This invention provides an energy-saving wastewater recycling and waste heat recovery device. Figure 7 Enlarged structural diagram of area B in the middle;

[0029] Figure 9 This is a schematic diagram of the sediment cleaning component in an energy-saving wastewater recycling and waste heat recovery device provided by the present invention;

[0030] Figure 10 This invention provides a schematic diagram of the cross-sectional structure of the sludge scraper in an energy-saving wastewater recycling and waste heat recovery device.

[0031] Figure 11 This is a schematic diagram of the suction pipeline installation structure in an energy-saving wastewater recycling and waste heat recovery device provided by the present invention.

[0032] Attached Figure Descriptions: 1. Main body of the equipment; 1a. Suction pipe connector; 10. Main water pipe connector; 11. Drain pipe connector; 12. Circulation pipeline; 13. Natural sedimentation chamber; 130. Primary sedimentation chamber; 131. Secondary sedimentation chamber; 132. Tertiary sedimentation chamber; 14. Chemical reaction sedimentation chamber; 15. Partition plate; 150. Connecting guide hole; 2. Dosing container; 3. Suspended floating impurity filter assembly; 30. Overflow plate; 31. Filter plate; 310. Slag discharge port; 311. Barrier. 32. Door; 33. Baffle; 34. First scraper; 35. Servo motor; 36. Sewage pipe connector; 37. Collection bin; 38. Electric push rod; 4. Sediment cleaning assembly; 40. Sludge scraper; 400. Slag collection chamber; 401. Second scraper; 402. Limiting slide bar; 403. Suction channel; 41. Suction pipeline; 410. Suction hose; 411. Y-type tee fitting; 5. Heat exchange assembly; 50. Heat exchange tube assembly; 51. Heat exchange fins; 6. Liquid level monitor. Detailed Implementation

[0033] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.

[0034] Example 1

[0035] Please see Figure 1-3 As shown, this embodiment provides a technical solution: an energy-saving wastewater recycling treatment waste heat recovery device, including a main body 1. The internal space of the main body 1 is divided into a natural sedimentation chamber 13 and a chemical reaction sedimentation chamber 14 by a partition plate 15. The natural sedimentation chamber 13 is located above the chemical reaction sedimentation chamber 14. One end of the partition plate 15 is provided with a connecting guide hole 150, so that the natural sedimentation chamber 13 and the chemical reaction sedimentation chamber 14 are connected. Therefore, after the initial sedimentation in the natural sedimentation chamber 13, the wastewater can flow into the chemical reaction sedimentation chamber 14 through the connecting guide hole 150. A heat exchange component 5 is provided in the chemical reaction sedimentation chamber 14. One end of the heat exchange component 5 is connected to a main water pipe connector 10, and the other end of the heat exchange component 5 is connected to the upper side of the natural sedimentation chamber 13 through a circulation pipe 12, so that the wastewater with heat energy can enter the natural sedimentation chamber 13 for sedimentation after heat exchange in the chemical reaction sedimentation chamber 14, realizing the wastewater waste heat recovery. For recycling, the natural sedimentation chamber 13 is equipped with a suspended impurity filter assembly 3, which is used to filter suspended and floating impurities in the wastewater, thereby achieving wastewater filtration treatment and minimizing the impurity content of the wastewater flowing into the chemical reaction sedimentation chamber 14. A dosing container 2 is installed on one side of the main body 1, and the bottom of the dosing container 2 is connected to the inside of the chemical reaction sedimentation chamber 14. Furthermore, a supplementary heating device is also installed inside the main body 1. The supplementary heating device adopts an electric heating plate embedded in the inner wall of the chemical reaction sedimentation chamber 14, or other heating structures installed inside the chemical reaction sedimentation chamber 14, such as an electric heating rod structure, an electric heating plate structure, etc. A drain pipe joint 11 is installed on the lower side of one side of the main body 1. It is located at the bottom of each sedimentation chamber (natural sedimentation chamber 13 and chemical reaction sedimentation chamber 14) for drainage. The drain pipe joint 11 of each sedimentation chamber can independently drain water from the sedimentation chamber.

[0036] It should be noted that this device is mainly used for the treatment of some hot wastewater. In the treatment of this hot wastewater, the pretreatment is basically natural sedimentation, that is, no treatment is done to the hot wastewater, and it is allowed to settle naturally. After natural sedimentation, in order to better treat the wastewater, it is necessary to add appropriate chemical reaction agents to the wastewater to react with some chemical substances in the wastewater before settling. This reaction process requires a certain temperature to accelerate the reaction and improve the wastewater treatment efficiency. Therefore, in this implementation, by first transferring the heat energy carried by the original wastewater to the wastewater that is subsequently chemically reacted and precipitated through the heat exchange component 5, some or all of the heat energy required to increase the reaction rate is provided, thereby achieving self-supply and recovery of heat energy, avoiding the waste of heat energy in the hot wastewater, and achieving the effect of energy saving.

[0037] To prolong the natural sedimentation path and process, and to ensure that the impurity content of the wastewater remains at a low level during subsequent chemical reaction sedimentation, the natural sedimentation chamber 13 is vertically divided into a primary sedimentation chamber 130, a secondary sedimentation chamber 131, and a tertiary sedimentation chamber 132 from top to bottom. The filtration coefficient of the suspended impurity filter component 3 in the primary sedimentation chamber 130, secondary sedimentation chamber 131, and tertiary sedimentation chamber 132 gradually decreases. The filtration coefficient reflects the size of suspended solids that can be filtered by the suspended impurity filter component 3. The larger the filtration coefficient, the larger the size of suspended solids that can be filtered by the suspended impurity filter component 3; conversely, the smaller the filtration coefficient, the smaller the size of suspended solids that can be filtered by the suspended impurity filter component 3.

[0038] Example 2

[0039] Please see Figure 3-8 As shown, this embodiment provides a technical solution: Based on embodiment 1, a liquid level monitor 6 is installed above the inner wall of the primary sedimentation chamber 130, the secondary sedimentation chamber 131, and the tertiary sedimentation chamber 132. The liquid level monitor 6 is used to monitor the liquid level height inside the primary sedimentation chamber 130, the secondary sedimentation chamber 131, and the tertiary sedimentation chamber 132, and to determine whether the suspended impurity filter assembly 3 in the primary sedimentation chamber 130, the secondary sedimentation chamber 131, and the tertiary sedimentation chamber 132 is blocked. When the determination result is that a blockage has occurred, the first scraper 33 is controlled to clean the suspended impurity filter assembly 3.

[0040] It should be noted that when the liquid level monitor 6 detects that the liquid level inside the primary sedimentation chamber 130, the secondary sedimentation chamber 131 and the tertiary sedimentation chamber 132 exceeds the set value, it indicates that the filtration speed of the suspended impurity filter assembly 3 has slowed down, and therefore it is determined that it is blocked. Conversely, the suspended impurity filter assembly 3 is normal.

[0041] Specifically, the suspended impurity filter assembly 3 includes an overflow plate 30, a filter plate 31, and a filter plate cleaning assembly. The overflow plate 30 is vertically installed above the partition plate 15 inside the primary sedimentation chamber 130, the secondary sedimentation chamber 131, and the tertiary sedimentation chamber 132. The overflow plate 30 divides the interior of the primary sedimentation chamber 130, the secondary sedimentation chamber 131, and the tertiary sedimentation chamber 132 into a sedimentation area and a filter overflow area. The sedimentation area is used for wastewater sedimentation, and the filter overflow area is used to connect the upper and lower sedimentation chambers. A connecting guide hole 150 is opened in the filter overflow area. The filter plate 31 is installed on the top of the overflow plate 30 along the length of the overflow plate 30. The filter plate cleaning assembly is installed on the side of the filter plate 31 opposite to the sedimentation area and is used to clean the surface of the filter plate 31 when it becomes clogged.

[0042] Furthermore, the filter plate cleaning assembly includes a first scraper 33 and a screw control structure. The first scraper 33 is movably mounted on one side of the filter plate 31 and can move along the length of the filter plate 31 under the action of the screw control structure to scrape and clean the surface of the filter plate 31. A brush structure (not shown in the figure) is provided on the side of the first scraper 33 that contacts the filter plate 31, so that the first scraper 33 can assist in unblocking the filter holes through the brush structure when cleaning the filter plate 31. The length of the brush bristles of the brush structure is controlled. The bristles are positioned within the length of the filter holes in the filter plate 31 to ensure that when the bristles brush the surface of the filter plate 31, they can be squeezed and inserted into the filter holes to clear the filter holes. The lead screw control structure includes a motor, a lead screw, and a lead screw nut. The output shaft of the motor is connected to one end of the lead screw. The lead screw is rotatably installed along the length of the filter plate 31. The lead screw nut is embedded in the first scraper 33. The lead screw and the lead screw nut are fitted together so that when the motor is running, it can control the first scraper 33 to move along the length of the filter plate 31 through the lead screw and the lead screw nut.

[0043] Furthermore, the filter plate cleaning assembly also includes a baffle 32 and a servo motor 34. The baffle 32 is rotatably mounted on one side of the filter plate 31 opposite to the sedimentation area via a rotating shaft. The length of the baffle 32 is the same as that of the filter plate 31. The servo motor 34 is mounted on the outside of the main body 1 of the equipment. The output shaft of the servo motor 34 is connected to the rotating shaft of the baffle 32, so that when the servo motor 34 is running, it can drive the baffle 32 to rotate. The first scraper 33 has a V-shaped structure. The filter plate 31 is installed at an angle. The baffle 32 has two states under the drive of the servo motor 34. One is the standby state in which the baffle 32 rotates to a position where one side is in contact with the side of the overflow plate 30. The other is the working state in which the baffle 32 rotates to a position where it forms a certain angle with the filter plate 31. In the working state, the two sides of the first scraper 33 are respectively in contact with the surfaces of the baffle 32 and the filter plate 31. In the working state, the angle between the baffle 32 and the horizontal direction is set as ∠α, then 0° < ∠α < 90°. In the standby state, since the baffle 32 is attached to the side of the overflow plate 30, it will not affect the overflow of the overflow plate 30 or the filtration effect of the filter plate 31. In the working state, the baffle 32 transforms into a V-shaped structure with the filter plate 31. Therefore, when the first scraper 33 cleans the filter plate 31, the suspended and floating impurities that are cleaned will not re-enter the sedimentation chamber, but will be scraped to one end in the V-shaped structure formed by the baffle 32 and the filter plate 31. Preferably, ∠α = 45°, and the inclination angle of the filter plate 31 is 45°. This can further ensure that the suspended and floating impurities that are cleaned will not enter the sedimentation chamber (the liquid level in the sedimentation chamber will not be higher than the highest point of the filter plate 31).

[0044] Furthermore, a collection chamber 36 is installed on one end of the overflow plate 30 opposite to the filter overflow area. A slag discharge port 310 is provided at the location of the collection chamber 36 on the filter plate 31. A barrier door 311 is rotatably installed inside the slag discharge port 310. An electric push rod 360 for controlling the opening and closing of the barrier door 311 is installed inside the collection chamber 36. A sewage pipe connector 35 is installed below one end of the collection chamber 36. The sewage pipe connector 35 extends to the outside of the equipment body 1 for connecting to the sewage pump pipeline. [The last sentence appears to be incomplete and possibly refers to a separate process:] ...in front of the baffle 32... When in working condition, the electric push rod 360 controls the barrier door 311 to open, allowing the impurities scraped off by the first scraper 33 to enter the collection chamber 36 through the slag discharge port 310, and then be discharged through the sewage pipe joint 35 on the collection chamber 36. When the baffle 32 ends working condition, the electric push rod 360 controls the barrier door 311 to close, preventing wastewater from entering the collection chamber 36. Specifically, the electric push rod 360 can be replaced by an electric telescopic rod, hydraulic rod, or other structure that can push the barrier door 311 to open and close.

[0045] Example 3

[0046] Please see Figure 9-11As shown, this embodiment provides a technical solution: Based on embodiment 1, a sediment cleaning component 4 is provided below the interior of both the natural sedimentation chamber 13 and the chemical reaction sedimentation chamber 14. This component is used to periodically clean the sediment in the natural sedimentation chamber 13 and the chemical reaction sedimentation chamber 14. The sediment cleaning component 4 includes a scraper 40 and a screw control structure. The scraper 40 is slidably installed on the inner bottom plate of the natural sedimentation chamber 13 and the chemical reaction sedimentation chamber 14 along the length or width direction. The screw control structure can control the scraper 40 to move along the length or width direction of the natural sedimentation chamber 13 and the chemical reaction sedimentation chamber 14. The screw control structure controls the movement of the first scraper 3. The moving lead screw control structure is the same, which also includes a motor, a lead screw and a lead screw nut. The output shaft of the motor is connected to one end of the lead screw. The lead screw is rotatably installed along the length or width of the natural sedimentation chamber 13 and the chemical reaction sedimentation chamber 14. The lead screw nut is embedded in the middle of the scraper frame 40. The lead screw and the lead screw nut are fitted together, so that when the motor is running, it can control the scraper frame 40 to move along the length or width of the natural sedimentation chamber 13 and the chemical reaction sedimentation chamber 14 through the lead screw and the lead screw nut. Furthermore, two limiting slide rods 402 that can limit the scraper frame 40 are installed inside the main body 1. The limiting slide rods 402 are installed along the moving direction of the scraper frame 40 and slide through the scraper frame 40.

[0047] The sludge scraper 40 adopts a double-sided arc-shaped "A" structure, so the sludge scraper 40 can scrape sludge in both directions. After scraping once, it does not need to be reset. It can stay in any position without affecting the next sludge scraping operation. The slag collection chamber 400 is opened along the length direction at the middle position on both sides of the sludge scraper 40, so that the sediment at the bottom of the natural sedimentation chamber 13 and the chemical reaction sedimentation chamber 14 can enter the slag collection chamber 400 along the surface of the sludge scraper 40 during the movement of the sludge scraper 40.

[0048] Specifically, the bottoms of the two slag collection chambers 400 are connected, and the highest point of the connection is lower than the lowest point of the opening of the slag collection chamber 400. This can prevent the scraped sediment from flowing out from the other side of the two slag collection chambers 400 during the sludge scraping operation. The slag collection chamber 400 is also equipped with a second scraper 401 and a screw control structure that can control the movement of the second scraper 401 along the length of the slag collection chamber 400. The screw control structure is the same as the screw control structure that controls the sludge scraper frame 40. Both control the movement of the second scraper 401 through the cooperation of the motor screw. The same end of the two slag collection chambers 400 is provided with a suction channel 403. The outside of the main body 1 of the equipment is provided with a suction pipe connector 1a that can be connected to the sewage pump pipeline. The suction channel 403 and the suction pipe connector 1a are connected by a suction pipeline 41.

[0049] The suction pipeline 41 includes a Y-type tee fitting 411 and a suction hose 410 connected to the main connector of the Y-type tee fitting 411. The other two branch pipes of the Y-type tee fitting 411 are respectively connected to the top of the two suction channels 403. In this way, the sediment in the slag collection chamber 400 can be directly extracted from the suction channel 403 by the scraping of the second scraper 401, thereby cleaning the sediment. This method of cleaning sediment does not require stopping the equipment, so it does not affect the operation of the equipment.

[0050] Furthermore, the heat exchange assembly 5 includes a heat exchange tube group 50 and heat exchange fins 51, wherein the heat exchange tube group 50 adopts a continuous S-shaped pipe structure, and the heat exchange fins 51 are equidistantly installed on the outside of the heat exchange tube group 50.

[0051] This embodiment provides an energy-saving wastewater recycling and waste heat recovery device. Specifically...

[0052] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. An energy-saving wastewater recycling and waste heat recovery device, characterized in that, It includes a main body (1), the internal space of which is divided into a natural sedimentation chamber (13) and a chemical reaction sedimentation chamber (14) by a partition plate (15). The natural sedimentation chamber (13) is located above the chemical reaction sedimentation chamber (14). One end of the partition plate (15) is provided with a connecting guide hole (150) to connect the natural sedimentation chamber (13) and the chemical reaction sedimentation chamber (14). The chemical reaction sedimentation chamber (14) is equipped with a heat exchange component (5). One end of the heat exchange component (5) is connected to a main water pipe connector (10), and the other end of the heat exchange component (5) is connected to the upper side of the natural sedimentation chamber (13) through a circulation pipe (12), so that the wastewater with heat energy can enter the natural sedimentation chamber (13) for sedimentation after heat exchange in the chemical reaction sedimentation chamber (14). The natural sedimentation chamber (13) is equipped with a suspended impurity filter component (3), which is used to filter suspended and floating impurities in the wastewater. The natural sedimentation chamber (13) is divided into a primary sedimentation chamber (130), a secondary sedimentation chamber (131) and a tertiary sedimentation chamber (132) in the vertical direction from top to bottom. The filtration coefficient of the suspended impurity filter assembly (3) in the primary sedimentation chamber (130), the secondary sedimentation chamber (131) and the tertiary sedimentation chamber (132) gradually decreases. The suspended impurity filtration assembly (3) includes: An overflow plate (30) is vertically installed above the partition plate (15) inside the primary sedimentation chamber (130), secondary sedimentation chamber (131), and tertiary sedimentation chamber (132). The overflow plate (30) divides the interior of the primary sedimentation chamber (130), secondary sedimentation chamber (131), and tertiary sedimentation chamber (132) into a sedimentation area and a filter overflow area. The sedimentation area is used for the sedimentation of wastewater, and the filter overflow area is used to connect the upper and lower sedimentation chambers. The connecting guide hole (150) is opened in the filter overflow area. A filter plate (31) is installed on top of the overflow plate (30) along the length of the overflow plate (30); A filter plate cleaning assembly is installed on one side of the filter plate (31) relative to the sedimentation area, and is used to clean the surface of the filter plate (31) when the filter plate (31) becomes clogged; The filter plate cleaning assembly includes a first scraper (33) and a screw control structure, wherein the first scraper (33) is movably mounted on one side of the filter plate (31) and can move along the length direction of the filter plate (31) under the action of the screw control structure; The filter plate cleaning assembly also includes: A baffle (32) is rotatably mounted on one side of the filter plate (31) opposite to the sedimentation area via a rotating shaft, and the length of the baffle (32) is the same as that of the filter plate (31). A servo motor (34) is installed on the outside of the main body (1) of the device, and the output shaft of the servo motor (34) is connected to the rotation shaft of the baffle (32); The first scraper (33) has a V-shaped structure, the filter plate (31) is installed at an angle, and the baffle (32) has two states under the drive of the servo motor (34). One state is the standby state where the baffle (32) rotates to a standby state where one side is in contact with the side of the overflow plate (30), and the other state is the working state where the baffle (32) rotates to a working state where it forms a certain angle with the filter plate (31). In the working state, the two sides of the first scraper (33) are in contact with the surfaces of the baffle (32) and the filter plate (31) respectively. The angle between the baffle (32) and the horizontal direction is set as ∠α, then 0° < ∠α < 90°.

2. The energy-saving wastewater recycling and waste heat recovery equipment according to claim 1, characterized in that, A liquid level monitor (6) is installed above the inner wall of the primary sedimentation chamber (130), the secondary sedimentation chamber (131) and the tertiary sedimentation chamber (132). The liquid level monitor (6) is used to monitor the liquid level height inside the primary sedimentation chamber (130), the secondary sedimentation chamber (131) and the tertiary sedimentation chamber (132) and to determine whether the suspended impurity filter assembly (3) in the primary sedimentation chamber (130), the secondary sedimentation chamber (131) and the tertiary sedimentation chamber (132) is blocked.

3. The energy-saving wastewater recycling and waste heat recovery equipment according to claim 2, characterized in that, One end of the overflow plate (30) is equipped with a collection chamber (36) on the side opposite to the filter overflow area. The filter plate (31) is provided with a slag discharge port (310) at the location of the collection chamber (36). A barrier door (311) is rotatably installed inside the slag discharge port (310). An electric push rod (360) for controlling the opening and closing of the barrier door (311) is installed inside the collection chamber (36). A sewage pipe connector (35) is installed below one end of the collection chamber (36).

4. The energy-saving wastewater recycling and waste heat recovery equipment according to claim 1, characterized in that, Both the natural sedimentation chamber (13) and the chemical reaction sedimentation chamber (14) are equipped with sediment cleaning components (4) at the bottom inside. These components are used to periodically clean the sediment in the natural sedimentation chamber (13) and the chemical reaction sedimentation chamber (14). The sediment cleaning components (4) include a scraper (40) and a screw control structure. The scraper (40) is slidably installed on the bottom plate inside the natural sedimentation chamber (13) and the chemical reaction sedimentation chamber (14) along the length or width direction. The screw control structure can control the scraper (40) to move along the length or width direction of the natural sedimentation chamber (13) and the chemical reaction sedimentation chamber (14). The sludge scraper (40) adopts a double-sided arc-shaped "human" structure, and slag collection chambers (400) are provided on both sides of the sludge scraper (40) along the length direction at the middle waist position.

5. The energy-saving wastewater recycling and waste heat recovery equipment according to claim 4, characterized in that, The bottoms of the two slag collection chambers (400) are connected, and the highest point of the connection is lower than the lowest point of the opening of the slag collection chamber (400). The slag collection chamber (400) is also equipped with a second scraper (401) and a screw control structure that can control the second scraper (401) to move along the length of the slag collection chamber (400). The same end of the two slag collection chambers (400) is provided with a suction channel (403). The outside of the main body of the equipment (1) is provided with a suction pipe connector (1a) that can be connected to the sewage pump pipeline. The suction channel (403) and the suction pipe connector (1a) are connected by a suction pipeline (41). The suction pipeline (41) includes a Y-type tee fitting (411) and a suction hose (410) connected to the main connector of the Y-type tee fitting (411). The other two branch pipes of the Y-type tee fitting (411) are respectively connected above the two suction channels (403).

6. The energy-saving wastewater recycling and waste heat recovery equipment according to claim 5, characterized in that, The heat exchange assembly (5) includes a heat exchange tube group (50) and heat exchange fins (51), wherein the heat exchange tube group (50) adopts a continuous S-shaped pipe structure, and the heat exchange fins (51) are installed at equal intervals on the outside of the heat exchange tube group (50).

Images