A boiler wastewater recycling and reuse device

Abstract

This invention belongs to the field of wastewater recycling and discloses a boiler continuous drainage recycling and reuse device. The device includes a boiler body, a sealed box, a filter cylinder, and an intermediate water tank. Furthermore, in use, the transmission mechanism does not require an independent motor drive. Utilizing the kinetic energy of the continuous drainage itself, the drainage impacts the arc-shaped plate through a conical guide pipe, driving the rotating rod, sprocket, and connecting rod in a coordinated manner. This, in turn, drives the filtration mechanism to reciprocate and the stirring mechanism to agitate the water. It relies entirely on the kinetic energy of the water flow, consuming no additional electrical energy, thus meeting the requirements for energy conservation and emission reduction. The filtration mechanism, through the connecting rod, drives the support rod and roller seat to periodically push the base plate, causing the filter plate to reciprocate. Surface impurities automatically fall off, eliminating the need for an additional backwashing device.

Description

Technical Field

[0001] This invention relates to the field of wastewater recycling technology, and in particular to a boiler wastewater recycling and reuse device. Background Technology

[0002] In industrial production, boilers are important heat energy supply equipment and are widely used in chemical and power industries. During boiler operation, in order to avoid the deterioration of water quality inside the boiler drum, such as the concentration of salt and impurities leading to scaling or corrosion, it is necessary to periodically discharge some water containing impurities, which is called boiler continuous drainage.

[0003] Currently, most companies treat boiler feedwater by direct discharge or simple filtration before discharge. Direct discharge results in feedwater containing not only a large amount of impurities but also a significant amount of waste heat, leading to water and energy waste. The waste heat carried by the feedwater is not recovered and is directly released into the environment, requiring additional fuel to heat the boiler's fresh feedwater, increasing operating costs. Some companies add filters and sedimentation tanks before feedwater discharge, but these devices can only remove large particles and cannot intercept small organic molecules, dissolved salts, and other trace impurities. Furthermore, the filter components are prone to clogging, requiring frequent manual cleaning, resulting in high maintenance costs, and the waste heat is still not recovered.

[0004] A few companies have tried using integrated wastewater recovery devices that combine filtration and waste heat recovery. However, some of these devices rely on independent motors for filtration, water mixing, and other processes, which require continuous power consumption and do not meet the industrial demand for energy conservation and emission reduction. In addition, the filtration process is mostly static, which causes impurities to accumulate on the filter plate surface quickly. This requires regular shutdowns for cleaning or replacement, resulting in poor continuity of device operation. Summary of the Invention

[0005] The present invention provides a boiler continuous drainage recycling and reuse device that does not require an independent motor drive. It drives the filter mechanism to filter back and forth and the stirring mechanism to stir the water. It relies entirely on the kinetic energy of the water flow and does not consume additional electrical energy, which meets the requirements of energy saving and consumption reduction. Using the kinetic energy of the continuous drainage itself, impurities on the surface of the filter plate automatically fall off. There is no need to add an additional backwashing device. The purified water quality meets the boiler makeup water requirements.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a boiler wastewater recycling and reuse device, the device comprising: a boiler body, a sealed box, a filter cylinder, and an intermediate water tank, and further comprising: A transmission mechanism for transmitting power is disposed on the inner wall of the sealed box. The transmission mechanism includes a rotating rod, multiple arc-shaped plates, a first sprocket, a chain, a second sprocket, and a connecting rod. The rotating rod is mounted on both sides of the inner wall of the sealed box via bearings. Multiple arc-shaped plates are fixedly mounted on the outer surface of the rotating rod. The first sprocket is fixedly sleeved on the outer surface of the rotating rod. The first sprocket is connected to the second sprocket via a chain. The second sprocket is fixedly sleeved on the outer surface of the connecting rod. The connecting rod is mounted on the outer surface of the filter cylinder via bearings. The side of the curved surface of the multiple arc-shaped plates faces the filter cylinder. The filtration mechanism for filtering the drain water is located on the inner wall of the filter cylinder. A stirring mechanism to prevent water stratification is located on one side of the intermediate water tank.

[0007] As a further improvement of the present invention: the transmission mechanism further includes multiple support rods and multiple roller seats; Among them, multiple support rods are grouped into groups of three, and two groups of support rods are fixedly installed on the outer surface of the connecting rod. Multiple roller seats are respectively installed on one side of one end of multiple support rods.

[0008] As a further improvement of the present invention: the filtering mechanism includes a cover plate, two first sleeve rods, two second sleeve rods, two compression springs and a mounting cylinder; The cover plate is threaded onto the outer surface of the filter cylinder. Two first sleeve rods are fixedly disposed on one side of the inner wall of the cover plate. Two second sleeve rods are movably fitted into the inner walls of the two first sleeve rods. One end of each of the two compression springs is fixedly disposed on one end of each of the two second sleeve rods, and the other end of each of the two compression springs is fixedly disposed on one side of the inner wall of each of the two first sleeve rods. The mounting cylinder is fixedly disposed on the side of the two second sleeve rods away from the cover plate and is movably fitted into the inner wall of the filter cylinder.

[0009] As a further improvement of the present invention: the filtration mechanism further includes a filter plate and two base plates; The filter plate is installed on the inner wall of the mounting cylinder, and the two base plates are fixedly installed on the side of the two mounting cylinders away from the cover plate. The two mounting cylinders correspond to the two sets of support rods respectively.

[0010] As a further improvement of the present invention: the stirring mechanism includes a vertical rod, a protective box, a first bevel gear, a second bevel gear, and multiple stirring plates; The upright is mounted on one side of the inner wall of the intermediate water tank via a bearing. Multiple stirring plates are fixedly mounted on the outer surface of the upright. The protective box is mounted on the outer surface of the upright via a bearing. The first bevel gear is fixedly sleeved on the outer surface of the upright. The second bevel gear is fixedly mounted on the end of the connecting rod near the protective box. The connecting rod is connected to the outer surface of the intermediate water tank via a bearing. The first bevel gear and the second bevel gear mesh with each other and are located inside the protective box.

[0011] As a further improvement of the present invention: the stirring mechanism further includes a base, a bidirectional motor, a one-way bearing, and a round rod; The base is fixedly installed on one side of the top of the intermediate water tank, the bidirectional motor is installed on the inner wall of the base, the bidirectional motor is connected to one end of the round rod through a coupling, the round rod is fixedly installed on the inner ring of the one-way bearing, and one end of the upright is fixedly installed on the outer ring of the one-way bearing.

[0012] As a further improvement of the present invention: a drain and sewage pipe is installed at two-thirds of the outer surface of the boiler body, a spiral cleaner is installed at one end of the drain and sewage pipe, a connecting pipe is installed at the outlet end of the spiral cleaner, a flow-limiting and pressure-stabilizing valve is installed on the outer surface of the connecting pipe, a first conveying pump is installed at one end of the connecting pipe, a conical guide pipe is installed at the output end of the first conveying pump, and the conical outlet of the conical guide pipe is installed on one side of the sealed box.

[0013] As a further improvement of the present invention: the filter cylinder is fixedly disposed on the side of the sealed box away from the conical guide pipe, a first guide pipe is installed on the outer surface of the filter cylinder, a plate heat exchanger is installed at one end of the first guide pipe, a nanofiltration membrane assembly is installed at the hot flow outlet of the plate heat exchanger through a pipe, and a fresh water supply pipe is installed at the cold flow inlet of the plate heat exchanger.

[0014] As a further improvement of the present invention: a second guide pipe is installed at the output end of the nanofiltration membrane module, and the second guide pipe is fixedly disposed on the outer surface of the intermediate water tank near the top.

[0015] As a further improvement of the present invention: a first conveying pipe is installed on the outer surface of the intermediate water tank near the bottom, a one-way valve is installed on the outer surface of the first conveying pipe, a second conveying pump is installed at one end of the first conveying pipe, a second conveying pipe is fixedly installed at the output end of the second conveying pump, and the second conveying pipe is fixedly installed on the outer surface of the boiler body near the top.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, the transmission mechanism does not require an independent motor drive. It utilizes the kinetic energy of the water flow itself. The water flow is concentrated and impacts the arc plate through the conical guide pipe, which drives the rotating rod, sprocket, and connecting rod to drive the filtration mechanism to filter back and forth and the stirring mechanism to stir the water. It relies entirely on the kinetic energy of the water flow and does not consume additional electrical energy, which meets the requirements of energy saving and consumption reduction.

[0017] 2. In this invention, the filtration mechanism drives the support rod and roller seat to periodically push the base plate through the connecting rod, so that the filter plate can reciprocate and the surface impurities can be automatically removed without the need for an additional backwashing device.

[0018] 3. In this invention, after the wastewater is initially removed by the spiral filter, the pressure is stabilized by the flow limiting and pressure stabilizing valve to ensure uniform power of the transmission mechanism. After the filtered water recovers waste heat through the plate heat exchanger, it is then deeply purified by the nanofiltration membrane module and finally enters the intermediate water tank. The stirring mechanism prevents water stratification and ensures that the water quality is uniform and stable before reuse. The entire process does not require manual intervention and has a high degree of automation.

[0019] 4. This invention employs a three-stage purification process: a spiral separator for initial impurity removal, a reciprocating filtration mechanism, and a nanofiltration membrane module for deep purification. This process effectively removes large particulate impurities, fine suspended solids, small molecule organic matter, dissolved salts, and other contaminants from the wastewater. The purified water meets the requirements for boiler feedwater. Attached Figure Description

[0020] Figure 1 This invention presents a schematic diagram of the overall three-dimensional structure of a boiler wastewater recycling and reuse device.

[0021] Figure 2 This invention provides a side-view three-dimensional structural diagram of a boiler wastewater recycling and reuse device.

[0022] Figure 3 This invention provides a cross-sectional three-dimensional structural diagram of the sealed box and filter cylinder in a boiler wastewater recycling and reuse device.

[0023] Figure 4 This invention presents a schematic diagram of the internal three-dimensional structure of the sealed box and filter cylinder in a boiler wastewater recycling and reuse device.

[0024] Figure 5 This invention provides a three-dimensional structural diagram of the cover plate removal in a boiler continuous drainage recycling and reuse device.

[0025] Figure 6 This invention provides a cross-sectional three-dimensional structural diagram of the intermediate water tank in a boiler wastewater recycling and reuse device.

[0026] Figure 7This invention provides a cross-sectional three-dimensional structural diagram of the protective box in a boiler continuous drainage recycling and reuse device.

[0027] Figure 8 This invention proposes a boiler wastewater recycling and reuse device. Figure 3 Enlarged view of point A in the middle.

[0028] Legend: 1. Boiler body; 101. Drainage and sewage pipe; 102. Spiral strainer; 103. Connecting pipe; 104. First delivery pump; 105. Flow limiting and pressure regulating valve; 106. Conical guide pipe; 107. Sealing box; 108. Filter cartridge; 109. First guide pipe; 110. Plate heat exchanger; 111. Fresh water supply pipe; 112. Nanofiltration membrane module; 113. Second guide pipe; 114. Intermediate water tank; 115. First delivery pipe; 116. Second delivery pump; 117. Second delivery pipe; 2. Transmission mechanism; 201. Rotating rod; 202. Arc 1. Shaping plate; 203. First sprocket; 204. Chain; 205. Second sprocket; 206. Connecting rod; 207. Support rod; 208. Roller seat; 3. Filtering mechanism; 301. Cover plate; 302. First sleeve rod; 303. Second sleeve rod; 304. Compression spring; 305. Mounting cylinder; 306. Filter plate; 307. Base plate; 4. Stirring mechanism; 401. Vertical rod; 402. Base; 403. Bidirectional motor; 404. One-way bearing; 405. Protective box; 406. First bevel gear; 407. Second bevel gear; 408. Stirring plate; 409. Round rod. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 8As shown, the present invention provides a boiler wastewater recycling and reuse device. The device includes a boiler body 1, a sealed box 107, a filter cartridge 108, and an intermediate water tank 114. The device also includes a transmission mechanism 2 for transmitting power, disposed on the inner wall of the sealed box 107. The transmission mechanism 2 includes a rotating rod 201, multiple arc-shaped plates 202, a first sprocket 203, a chain 204, a second sprocket 205, and a connecting rod 206. The rotating rod 201 is mounted on both sides of the inner wall of the sealed box 107 via bearings, and the multiple arc-shaped plates 202 are fixedly mounted on the rotating rod 201. On the outer surface of the filter cylinder 108, the first sprocket 203 is fixedly sleeved on the outer surface of the rotating rod 201. The first sprocket 203 is connected to the second sprocket 205 through the chain 204. The second sprocket 205 is fixedly sleeved on the outer surface of the connecting rod 206. The connecting rod 206 is set on the outer surface of the filter cylinder 108 through the bearing. The side of the curved surface protrusion of the multiple arc plates 202 faces the filter cylinder 108. The filter mechanism 3 for filtering and draining water is set on the inner wall of the filter cylinder 108. The stirring mechanism 4 for preventing water stratification is set on one side of the intermediate water tank 114.

[0031] In use, the transmission mechanism 2 is installed inside the sealed box 107. The rotation of multiple arc-shaped plates 202 under force drives the entire mechanism to work together, providing power for filtration and stirring. The curved convex sides of the multiple arc-shaped plates 202 face the filter cylinder 108, which can maximize the bearing of water flow impact force. The water flow impact force drives the arc-shaped plates 202 to rotate, which in turn drives the rotating rod 201 to rotate around its own axis. When the rotating rod 201 rotates, it synchronously drives the first sprocket 203 to rotate. The first sprocket 203 is driven by the meshing of the second sprocket 205 through the chain 204. The sprocket and chain transmission can avoid power loss and is suitable for humid environments. Finally, the power is transmitted to the connecting rod 206, causing the connecting rod 206 to rotate around its own axis. The connecting rod 206 is installed on the outer surface of the filter cylinder 108 through bearings, which does not affect the normal water flow of the filter cylinder 108.

[0032] Please see Figure 3 In one embodiment, the transmission mechanism 2 further includes multiple support rods 207 and multiple roller seats 208; wherein, the multiple support rods 207 are grouped in groups of three, and two groups of support rods 207 are fixedly disposed on the outer surface of the connecting rod 206, and multiple roller seats 208 are respectively disposed on one side of one end of the multiple support rods 207. The two groups of support rods 207 on the outer surface of the connecting rod 206 are evenly distributed circumferentially, and a roller seat 208 is installed at the end of each group of support rods 207. The roller seat 208 has a built-in small roller, which can convert sliding friction into rolling friction, reduce wear with the filter mechanism, and extend the service life of the components.

[0033] Please see Figures 1 to 8In one embodiment, the filter mechanism 3 includes a cover plate 301, two first sleeve rods 302, two second sleeve rods 303, two compression springs 304, and a mounting cylinder 305; wherein, the cover plate 301 is threaded onto the outer surface of the filter cylinder 108, the two first sleeve rods 302 are fixedly disposed on one side of the inner wall of the cover plate 301, the two second sleeve rods 303 are respectively movably fitted into the inner walls of the two first sleeve rods 302, and one end of each of the two compression springs 304 is fixedly disposed on one end of each of the two second sleeve rods 303. The other end of 04 is fixedly set on one side of the inner wall of the two first sleeve rods 302 respectively, and the mounting cylinder 305 is fixedly set on the side of the two second sleeve rods 303 away from the cover plate 301. The mounting cylinder 305 is movably embedded in the inner wall of the filter cylinder 108. The filter mechanism 3 also includes a filter plate 306 and two bottom plates 307. The filter plate 306 is installed on the inner wall of the mounting cylinder 305, and the two bottom plates 307 are fixedly set on the side of the two mounting cylinders 305 away from the cover plate 301. The two bottom plates 307 correspond to the two sets of support rods 207 respectively.

[0034] Specifically, when the connecting rod 206 drives the multiple support rods 207 and multiple roller seats 208 to rotate, the small rollers on the multiple roller seats 208 will sequentially contact the two base plates 307, pushing the two base plates 307 towards the cover plate 301. The base plates 307 drive the mounting cylinder 305 and the second set of rods 303 to move synchronously, and the two compression springs 304 are further compressed. At this time, the filter plate 306 inside the mounting cylinder 305 moves with the mounting cylinder, and even the drainage is forced to pass through the pores of the filter plate, and impurities are intercepted on the surface of the filter plate. When the small rollers on the multiple roller seats 208 disengage from the two base plates 307, the two compression springs 304 release elastic potential energy, pushing the two second sleeve rods 303, the mounting cylinder 305 and the base plate 307 to reset in the opposite direction. As a result, the filter plate 306 vibrates in the opposite direction when the mounting cylinder resets, and the impurities intercepted on the surface fall off, achieving self-cleaning. The cover plate 301 is threaded onto the outer surface of the filter cylinder 108. By rotating the cover plate 301, the mounting cylinder 305 can be removed from the inside of the filter cylinder 108, and the impurities inside can be cleaned.

[0035] Please see Figures 1 to 8 In one embodiment, the stirring mechanism 4 includes a vertical rod 401, a protective box 405, a first bevel gear 406, a second bevel gear 407, and a plurality of stirring plates 408; The upright 401 is mounted on one side of the inner wall of the intermediate water tank 114 via bearings. Multiple stirring plates 408 are fixedly mounted on the outer surface of the upright 401. A protective box 405 is mounted on the outer surface of the upright 401 via bearings. A first bevel gear 406 is fixedly sleeved on the outer surface of the upright 401. A second bevel gear 407 is fixedly mounted on one end of the connecting rod 206 near the protective box 405. The connecting rod 206 is connected to the outer surface of the intermediate water tank 114 via bearings. The first bevel gear 406 and the second bevel gear 407 mesh with each other. The two bevel gears 407 are located inside the protective box 405. A drain and sewage pipe 101 is installed at two-thirds of the outer surface of the boiler body 1. A spiral cleaner 102 is installed at one end of the drain and sewage pipe 101. A connecting pipe 103 is installed at the outlet end of the spiral cleaner 102. A flow-limiting and pressure-stabilizing valve 105 is installed on the outer surface of the connecting pipe 103. A first delivery pump 104 is installed at one end of the connecting pipe 103. A conical guide pipe 106 is installed at the output end of the first delivery pump 104. The conical outlet of the conical guide pipe 106 is installed on one side of the sealed box 107.

[0036] Specifically, the qualified water stored in the intermediate water tank 114 is prone to density stratification due to static standing, such as salt settling and dissolved oxygen rising. The stirring mechanism 4 can ensure uniform water quality. The connecting rod 206 fixes the second bevel gear 407. When the connecting rod 206 rotates, it drives the second bevel gear 407 to rotate, which in turn causes the first bevel gear 406 to rotate, converting horizontal rotation into vertical rotation. This further causes the upright rod 401 to rotate. When the upright rod 401 rotates, it drives the stirring plate 408 to stir the water in the water tank, preventing stratification. Moreover, when the continuous drainage flow is small and the power is insufficient, the bidirectional motor 403 can provide auxiliary power. When the external power switch of the bidirectional motor 403 is turned on, the circular motor is driven through the coupling. The rod 409 rotates, and the round rod 409 is fixed to the inner ring of the one-way bearing 404. The upright rod 401 is fixed to the outer ring of the one-way bearing 404. Due to the one-way transmission characteristic of the one-way bearing 404, when the power of the transmission mechanism 2 is sufficient, the upright rod 401 drives the outer ring to rotate, and the inner ring does not rotate. At this time, the bidirectional motor 403 does not consume energy. When the power is insufficient, the bidirectional motor 403 drives the inner ring to rotate, and drives the upright rod 401 connected to the outer ring to rotate through the one-way bearing 404, ensuring that the stirring is not interrupted. At the same time, it drives the connecting rod 206 to rotate, so that the filter plate 306 can move back and forth. The first bevel gear 406 and the second bevel gear 407 are placed in the protective box 405 to prevent water vapor from entering the gear meshing point and causing rust.

[0037] Please see Figures 1 to 8In one embodiment, a drain pipe 101 is installed at two-thirds of the outer surface of the boiler body 1. A spiral strainer 102 is installed at one end of the drain pipe 101. A connecting pipe 103 is installed at the outlet end of the spiral strainer 102. A flow-limiting and pressure-stabilizing valve 105 is installed on the outer surface of the connecting pipe 103. A first delivery pump 104 is installed at one end of the connecting pipe 103. A conical guide pipe 106 is installed at the output end of the first delivery pump 104. The conical outlet of the conical guide pipe 106 is installed on one side of the sealing box 107. The drain pipe 101 is installed at two-thirds of the outer surface of the boiler body 1, where the impurity concentration is high. The drain water first enters the spiral strainer 102 and flows through the spiral channel inside the spiral strainer 102. High-speed rotation throws large, dense particles of impurities, such as silt or rust, against the inner wall of the channel, where they settle to the bottom of the spiral cleaner 102. A flow-limiting and pressure-regulating valve 105 is installed on the connecting pipe 103, located between the first delivery pump 104 and the conical guide pipe 106. When the output pressure of the first delivery pump is too high, exceeding 0.35 MPa, the valve automatically closes to reduce the water flow rate. When the pressure is too low, below 0.15 MPa, the valve automatically opens to ensure stable pressure and prevent the subsequent transmission mechanism 2 from jamming due to sudden pressure changes. The large-diameter end of the conical guide pipe 106 is connected to the first delivery pump 104, and the small-diameter end is connected to the sealing box 107, allowing the water flow to change from dispersed to concentrated, enhancing the impact force of the water flow on the subsequent transmission mechanism 2, while preventing water flow turbulence.

[0038] Please see Figures 1 to 8 In one embodiment, the filter cartridge 108 is fixedly disposed on the side of the sealed box 107 away from the conical guide pipe 106. A first guide pipe 109 is installed on the outer surface of the filter cartridge 108. A plate heat exchanger 110 is installed at one end of the first guide pipe 109. A nanofiltration membrane assembly 112 is installed through a pipe at the hot flow outlet of the plate heat exchanger 110. A fresh feed water pipe 111 is installed at the cold flow inlet of the plate heat exchanger 110. The filtered wastewater enters the hot flow inlet of the plate heat exchanger 110 from the first guide pipe 109 and flows in the internal hot flow channel. The boiler fresh feed water enters the cold flow inlet of the plate heat exchanger 110 from the fresh feed water pipe 111 and flows in the cold flow channel. The hot and cold fluids transfer heat through the metal plates. The heat of the wastewater is transferred to the fresh feed water. The fresh feed water after heat exchange is directly sent to the boiler to reduce the boiler heating fuel consumption.

[0039] Please see Figures 1 to 8In one embodiment, a second guide pipe 113 is installed at the output end of the nanofiltration membrane module 112. The second guide pipe 113 is fixedly installed on the outer surface of the intermediate water tank 114 near the top. The heat exchanged wastewater flows out from the hot flow outlet of the plate heat exchanger and enters the nanofiltration membrane module 112 through the pipe. The nanofiltration membrane module 112 removes trace impurities to ensure that the quality of the recycled water meets the boiler feedwater requirements. The purified water flows out from the output end of the nanofiltration membrane module 112.

[0040] Please see Figures 1 to 8 In one embodiment, a first conveying pipe 115 is installed on the outer surface of the intermediate water tank 114 near the bottom. A one-way valve is installed on the outer surface of the first conveying pipe 115. A second conveying pump 116 is installed at one end of the first conveying pipe 115. A second conveying pipe 117 is fixedly installed at the output end of the second conveying pump 116. The second conveying pipe 117 is fixedly installed on the outer surface of the boiler body 1 near the top. The qualified water in the intermediate water tank 114 flows out through the first conveying pipe 115. The one-way valve of the first conveying pipe 115 prevents the water from flowing back. After being pressurized by the second conveying pump 116, the water is sent back to the top of the boiler body 1 through the second conveying pipe 117.

[0041] The working principle and usage process of this invention are as follows: When recycling boiler wastewater, during boiler body 1 operation, internal water will evaporate and concentrate, producing wastewater containing impurities. This wastewater is discharged through wastewater drain pipe 101, which is installed at two-thirds of the outer surface of boiler body 1, where the impurity concentration is higher. The wastewater first enters spiral separator 102 for preliminary purification. The pre-purified water flows out from the outlet of spiral separator 102 and enters connecting pipe 103. The first delivery pump 104 provides power for the wastewater. The pre-purified water is pressurized and delivered into the conical guide pipe 106. The flow-limiting and pressure-stabilizing valve 105 is installed on the connecting pipe 103, located between the first delivery pump 104 and the conical guide pipe 106. When the output pressure of the first delivery pump is too high, the valve automatically closes to reduce the water flow rate. When the pressure is too low, the valve automatically opens. The large-diameter end of the conical guide pipe 106 is connected to the first delivery pump 104, and the small-diameter end is connected to the sealing box 107. This allows the water flow to change from dispersed to concentrated, enhancing the impact force of the water flow on the subsequent transmission mechanism 2, while avoiding water flow turbulence. The transmission mechanism 2 is installed inside the sealed box 107. Multiple arc-shaped plates 202 rotate under force, driving the entire mechanism to work together and providing power for filtration and stirring. Water flows into the sealed box 107 through the conical guide pipe 106, impacting the multiple arc-shaped plates 202 on the outer surface of the rotating rod 201. The impact force of the water causes the arc-shaped plates 202 to rotate, which in turn drives the rotating rod 201 to rotate around its own axis. When the rotating rod 201 rotates, it simultaneously drives the first sprocket 203 to rotate. The first sprocket 203 is driven by a chain 204 meshing with the second sprocket 205, ultimately transmitting power to the connecting rod 206, causing it to rotate around its own axis. After the water flows from the sealed box 107 into the filter cylinder 108, it must pass through the filtration mechanism 3 before flowing out. When the connecting rod 206 drives the multiple support rods 207 and multiple roller seats 208 to rotate, the small rollers on the multiple roller seats 208 sequentially engage with the two base plates 3. When contact occurs, the two base plates 307 will be pushed to move towards the cover plate 301. The base plates 307 will drive the mounting cylinder 305 and the second set of rods 303 to move synchronously. The two compression springs 304 will be further compressed. At this time, the filter plate 306 inside the mounting cylinder 305 moves with the mounting cylinder, and the drainage is forced to pass through the filter plate pores. Impurities are intercepted on the surface of the filter plate. When the small rollers on the multiple roller seats 208 are separated from the two base plates 307, the two compression springs 304 release elastic potential energy, pushing the two second set of rods 303, the mounting cylinder 305 and the base plate 307 to reset in the opposite direction. As a result, the filter plate 306 will vibrate in the opposite direction when it resets with the mounting cylinder. The impurities intercepted on the surface will fall off, achieving self-cleaning. The cover plate 301 is threaded on the outer surface of the filter cylinder 108. By rotating the cover plate 301, the mounting cylinder 305 can be taken out from the inside of the filter cylinder 108, and the impurities inside can be cleaned. The filtered wastewater enters the hot flow inlet of the plate heat exchanger 110 from the first guide pipe 109 and flows in the internal hot flow channel. The fresh boiler feedwater enters the cold flow inlet of the plate heat exchanger 110 from the fresh feedwater pipe 111 and flows in the cold flow channel. The hot and cold fluids transfer heat through the metal plates, and the heat of the wastewater is transferred to the fresh feedwater. The fresh feedwater after heat exchange is directly sent to the boiler to reduce the boiler heating fuel consumption. The wastewater after heat exchange flows out from the hot flow outlet of the plate heat exchanger and enters the nanofiltration membrane module 112 through the pipe. The nanofiltration membrane module 112 removes trace impurities to ensure that the quality of the recycled water meets the boiler feedwater requirements. The purified water flows out from the output end of the nanofiltration membrane module 112 and enters the intermediate water tank 114 for storage through the second guide pipe 113. The qualified water stored in the intermediate water tank 114 is prone to density stratification due to static setting. The stirring mechanism 4 can ensure uniform water quality. The connecting rod 206 fixes the second bevel gear 407. When the connecting rod 206 rotates, it drives the second bevel gear 407 to rotate, which in turn causes the first bevel gear 406 to rotate, converting horizontal rotation into vertical rotation. This further causes the upright rod 401 to rotate. When the upright rod 401 rotates, it drives the stirring plate 408 to stir the water in the water tank, preventing stratification. Moreover, when the drainage flow is small and the power is insufficient, the bidirectional motor 403 can provide auxiliary power. Opening the external... The power switch drives the round rod 409 to rotate via a coupling. The round rod 409 is fixed to the inner ring of the one-way bearing 404, and the upright rod 401 is fixed to the outer ring of the one-way bearing 404. Due to the one-way transmission characteristic of the one-way bearing 404, when the power of the transmission mechanism 2 is sufficient, the upright rod 401 drives the outer ring to rotate, while the inner ring does not rotate. At this time, the bidirectional motor 403 does not consume energy. When the power is insufficient, the bidirectional motor 403 drives the inner ring to rotate, which drives the upright rod 401 connected to the outer ring to rotate via the one-way bearing 404, ensuring that the stirring is not interrupted. At the same time, it drives the connecting rod 206 to rotate, so that the filter plate 306 can move back and forth. The qualified water in the intermediate water tank 114 flows out through the first conveying pipe 115, and after being pressurized by the second conveying pump 116, it is sent back to the top of the boiler body 1 through the second conveying pipe 117 as makeup water, thus completing the closed loop of continuous drainage recycling and reuse.

[0042] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler wastewater recycling and reuse device, the device comprising: The boiler body (1), sealing box (107), filter cartridge (108), and intermediate water tank (114) are characterized in that the device further includes: The transmission mechanism (2) for transmitting power is disposed on the inner wall of the sealed box (107). The transmission mechanism (2) includes a rotating rod (201), multiple arc plates (202), a first sprocket (203), a chain (204), a second sprocket (205), and a connecting rod (206). The rotating rod (201) is mounted on both sides of the inner wall of the sealed box (107) via bearings. Multiple arc-shaped plates (202) are fixedly mounted on the outer surface of the rotating rod (201). The first sprocket (203) is fixedly sleeved on the outer surface of the rotating rod (201). The first sprocket (203) is connected to the second sprocket (205) via a chain (204). The second sprocket (205) is fixedly sleeved on the outer surface of the connecting rod (206). The connecting rod (206) is mounted on the outer surface of the filter cylinder (108) via bearings. The side of the curved surface of the multiple arc-shaped plates (202) faces the filter cylinder (108). The filter mechanism (3) for filtering the drain is located on the inner wall of the filter cylinder (108); A stirring mechanism (4) for preventing water stratification is located on one side of the intermediate water tank (114).

2. The boiler wastewater recycling and reuse device according to claim 1, characterized in that: The transmission mechanism (2) also includes multiple support rods (207) and multiple roller seats (208); Among them, multiple support rods (207) are grouped in groups of three, and two groups of support rods (207) are fixedly installed on the outer surface of the connecting rod (206). Multiple roller seats (208) are respectively installed on one side of one end of multiple support rods (207).

3. The boiler wastewater recycling and reuse device according to claim 2, characterized in that: The filter mechanism (3) includes a cover plate (301), two first sleeve rods (302), two second sleeve rods (303), two compression springs (304), and a mounting cylinder (305). The cover plate (301) is threaded onto the outer surface of the filter cylinder (108). Two first sleeve rods (302) are fixedly disposed on one side of the inner wall of the cover plate (301). Two second sleeve rods (303) are respectively movably embedded in the inner wall of the two first sleeve rods (302). One end of each of the two compression springs (304) is fixedly disposed on one end of each of the two second sleeve rods (303), and the other end of each of the two compression springs (304) is fixedly disposed on one side of the inner wall of the two first sleeve rods (302). The mounting cylinder (305) is fixedly disposed on the side of the two second sleeve rods (303) away from the cover plate (301), and the mounting cylinder (305) is movably embedded in the inner wall of the filter cylinder (108).

4. The boiler wastewater recycling and reuse device according to claim 3, characterized in that: The filtration mechanism (3) also includes a filter plate (306) and two base plates (307). The filter plate (306) is installed on the inner wall of the mounting cylinder (305), and the two base plates (307) are fixedly set on the side of the two mounting cylinders (305) away from the cover plate (301). The two mounting cylinders (305) correspond to the two sets of support rods (207) respectively.

5. The boiler wastewater recycling and reuse device according to claim 4, characterized in that: The stirring mechanism (4) includes a vertical rod (401), a protective box (405), a first bevel gear (406), a second bevel gear (407), and multiple stirring plates (408). The upright (401) is mounted on one side of the inner wall of the intermediate water tank (114) via a bearing. Multiple stirring plates (408) are fixedly mounted on the outer surface of the upright (401). The protective box (405) is mounted on the outer surface of the upright (401) via a bearing. The first bevel gear (406) is fixedly sleeved on the outer surface of the upright (401). The second bevel gear (407) is fixedly mounted on one end of the connecting rod (206) near the protective box (405). The connecting rod (206) is connected to the outer surface of the intermediate water tank (114) via a bearing. The first bevel gear (406) and the second bevel gear (407) mesh with each other, and the first bevel gear (406) and the second bevel gear (407) are located inside the protective box (405).

6. The boiler wastewater recycling and reuse device according to claim 5, characterized in that: The stirring mechanism (4) also includes a base (402), a bidirectional motor (403), a one-way bearing (404), and a round rod (409). The base (402) is fixedly installed on one side of the top of the intermediate water tank (114), the bidirectional motor (403) is installed on the inner wall of the base (402), the bidirectional motor (403) is connected to one end of the round rod (409) through a coupling, the round rod (409) is fixedly installed on the inner ring of the one-way bearing (404), and one end of the upright (401) is fixedly installed on the outer ring of the one-way bearing (404).

7. The boiler wastewater recycling and reuse device according to claim 1, characterized in that: A drain pipe (101) is installed at two-thirds of the outer surface of the boiler body (1). A spiral cleaner (102) is installed at one end of the drain pipe (101). A connecting pipe (103) is installed at the outlet end of the spiral cleaner (102). A flow-limiting and pressure-stabilizing valve (105) is installed on the outer surface of the connecting pipe (103). A first delivery pump (104) is installed at one end of the connecting pipe (103). A conical guide pipe (106) is installed at the output end of the first delivery pump (104). The conical outlet of the conical guide pipe (106) is installed on one side of the sealing box (107).

8. The boiler wastewater recycling and reuse device according to claim 7, characterized in that: The filter cartridge (108) is fixedly disposed on the side of the sealed box (107) away from the conical guide pipe (106). A first guide pipe (109) is installed on the outer surface of the filter cartridge (108). A plate heat exchanger (110) is installed at one end of the first guide pipe (109). A nanofiltration membrane assembly (112) is installed through a pipe at the hot flow outlet of the plate heat exchanger (110). A fresh water supply pipe (111) is installed at the cold flow inlet of the plate heat exchanger (110).

9. The boiler wastewater recycling and reuse device according to claim 8, characterized in that: The output end of the nanofiltration membrane module (112) is equipped with a second guide pipe (113), which is fixedly disposed on the outer surface of the intermediate water tank (114) near the top.

10. The boiler wastewater recycling and reuse device according to claim 1, characterized in that: A first delivery pipe (115) is installed on the outer surface of the intermediate water tank (114) near the bottom. A one-way valve is installed on the outer surface of the first delivery pipe (115). A second delivery pump (116) is installed at one end of the first delivery pipe (115). A second delivery pipe (117) is fixedly installed at the output end of the second delivery pump (116). The second delivery pipe (117) is fixedly installed on the outer surface of the boiler body (1) near the top.

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