A new type of purification and recovery boiler waste water device

Abstract

A new type of purification and recovery boiler exhaust water device, including main structure shell, flash water vapor recovery assembly, waste heat recovery assembly and boiler body, flash chamber is communicated with the exhaust pump, for the boiler body exhaust high temperature supersaturated wastewater flash evaporation water vapor, water vapor without dehumidification treatment can directly enter the water return pipeline through the water vapor outlet and the backflow of clean water mixed heating and pressurized back to the boiler body, while the flash residual high temperature wastewater flows into the heat exchange pipe to heat the low temperature clean water in the clean water cavity, the backwater pump sends the heated clean water into the water return pipeline to realize the recycling, the device ensures the reasonable flow relationship among the flash chamber, the heat exchange pipe and the water return pipeline through the pressure grading design, improves the heat utilization rate and the water resource recovery efficiency, and simplifies the system structure, ensures the safe and stable operation of the device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of boiler continuous drainage treatment, and particularly relates to a novel purification and recovery boiler continuous drainage device. BACKGROUND

[0002] In the process of running the existing boiler system, a large amount of high-temperature wastewater is generated from the boiler body. The wastewater is usually in a supersaturated state and contains available heat energy. In the prior art, when the heat and water resources are recovered by using the flash steam, the water vapor usually needs to be dehumidified or dried for subsequent pipeline transportation and heat utilization, and to prevent the liquid droplets, suspended particles or impurities carried in the water vapor from affecting the pipeline and equipment. By dehumidification or drying, the flash-generated water vapor can be converted into a relatively dry state, so as to facilitate the connection of other heat recovery equipment and realize the heat transfer and resource recovery of the water vapor. However, for this purpose, a dehumidification device, a drying device or auxiliary equipment needs to be added to the system, which makes the overall device structure more complex and increases the occupied space and installation difficulty of the equipment.

[0003] In addition, heat loss will inevitably occur in the process of dehumidification, which increases the energy consumption and management cost in the process of system operation, and affects the overall recovery efficiency and operation stability. Therefore, a further optimized continuous drainage device is needed, which can simplify the water vapor recovery path, reduce the complexity and operation cost of the equipment, and improve the utilization efficiency of heat and water resources. SUMMARY

[0004] In view of the above problems, the present application provides a novel purification and recovery boiler continuous drainage device to at least partially solve the above technical problems.

[0005] The technical scheme adopted by the present application is as follows: the present application provides a novel purification and recovery boiler continuous drainage device, which comprises a main structure shell, a water vapor recovery assembly, a wastewater sensible heat recovery assembly and a boiler body. The water vapor recovery assembly and the wastewater sensible heat recovery assembly are arranged on the main structure shell. A drainage pump is arranged on the main structure shell and connected with the boiler body. The water vapor recovery assembly comprises a flash chamber arranged in the main structure shell and connected with the drainage pump. The top of the flash chamber is provided with a water vapor outlet, and the bottom of the flash chamber is provided with a drainage pipe network. The wastewater sensible heat recovery assembly comprises a water purification cavity and a water return pump arranged on the main structure shell. The water purification cavity is internally provided with a heat exchange pipe in communication with the drainage pipe network. The water return pump is provided with a water return pipeline, one end of which is in communication with the inside of the water purification cavity through the water return pump, and the other end is in communication with the inside of the boiler body. The water vapor outlet is in communication with the water return pipeline. The pressure in the boiler body is greater than that in the flash chamber, the pressure in the flash chamber is greater than that in the heat exchange pipe, and the pressure in the heat exchange pipe is greater than that in the water return pipeline.

[0006] Further, the water vapor outlet is provided with a gas injection pipe, both ends of the gas injection pipe are communicated with the water vapor outlet and the backwater pipeline respectively, and a one-way valve is arranged on the gas injection pipe, and the one-way valve is configured to be one-way communicated from the water vapor outlet to the backwater pipeline.

[0007] Further, the main structure shell is provided with a wastewater discharge inlet and a pipeline support, the wastewater discharge inlet is connected with the boiler body, and the backwater pipeline is fixedly arranged on the pipeline support; the water purification cavity is provided with a water purification inlet connected with an external water purification source, the end of the heat exchange pipe is provided with a waste discharge port located outside the main structure shell, and the backwater pump is provided with an extendable water purification pipe located inside the water purification cavity.

[0008] Further, the flash chamber is provided with a pressure chamber communicated with the backwater pump, and an atomizing plate is arranged on one side of the pressure chamber close to the flash chamber, and the atomizing plate is arrayed with arrayed atomizing holes.

[0009] Further, the main structure shell is provided with an air path optimization assembly, the air path optimization assembly comprises a driving fan and a driven fan, the driving fan and the driven fan are rotatably arranged in the flash chamber, the driving fan corresponds to the position of the atomizing plate, and the driven fan corresponds to the position of the water vapor outlet; the driving fan is provided with a driving shaft, the driving shaft is provided with a first gear, the driven fan is provided with a driven shaft, the driven shaft is provided with a second gear, the first gear is engaged with the second gear, and the first gear is configured to drive the second gear to form a speed increasing transmission structure.

[0010] Further, the air path optimization assembly comprises an isolation cavity arranged inside the main structure shell, and the first gear and the second gear are arranged inside the isolation cavity; the side wall of the isolation cavity is provided with a first bearing and a second bearing, the driving shaft is rotatably arranged on the first bearing, and the driven shaft is rotatably arranged on the second bearing.

[0011] Further, the boiler body is provided with a continuous water discharge port communicated with the wastewater discharge inlet and a water purification backflow port communicated with the backwater pipeline, and the water purification backflow port is provided with a backwater flow valve.

[0012] Further, the boiler body is provided with a control panel electrically connected with the backwater pump and the backwater pump, and the control panel is configured to control the start-stop and rotating speed of the backwater pump and the backwater pump.

[0013] Further, the side wall of the boiler body is provided with a boiler flange, one side of the boiler body is provided with a guard plate, the main structure shell is arranged on the guard plate, and the guard plate is arrayed with fixing bolts.

[0014] Further, the one-way valve is provided with a slit and a sealing ball, both ends of the slit are communicated with the water vapor outlet and the gas injection pipe respectively, the sealing ball is arranged between the gas injection pipe and the slit, and the diameter of the sealing ball is greater than the inner diameter of the slit.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] By the cooperative work of the main structure shell, the drainage pump, the flash chamber, the drainage pipe network, the heat exchange pipe, the clean water cavity and the backwater pump, the recovery and heat reuse of the high-temperature waste water discharged by the boiler main body are realized, the waste water is sucked into the flash chamber by the drainage pump, the waste water is rapidly flashed to generate high-temperature water vapor, the high-temperature water vapor enters the backwater pipe through the water vapor outlet, at the same time, the residual waste water after flashing flows into the heat exchange pipe to heat the low-temperature clean water in the clean water cavity to realize heat transfer; the backwater pump sucks the heated clean water into the backwater pipe, the high-temperature water vapor can directly enter the backwater pipe through the water vapor outlet without additional dehumidification treatment, is mixed with the backflow clean water, is heated and pressurized, and is then fed back to the boiler main body, and the pressure grading design is adopted to prevent the leakage of the high-temperature water vapor, thereby improving the safety and stability of the system operation.

[0017] The present application does not need to perform additional dehumidification treatment on the flash water vapor, the cooperation of the water vapor recovery assembly and the waste water sensible heat recovery assembly ensures the full recovery of heat and water resources, reduces energy waste and water resource loss, and simplifies the device structure, so that the system can keep the fluid path clear and the operation stable during the processes of flashing, heat exchange and backwater circulation, and the long-term maintenance and reliable use of the device are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a perspective view of the new purification and recovery boiler continuous waste water discharge device according to the embodiment of the present application Figure 1 ;

[0019] Figure 2 The figure is a front view of the new purification and recovery boiler continuous waste water discharge device according to the embodiment of the present application

[0020] Figure 3 The figure is a top view of the new purification and recovery boiler continuous waste water discharge device according to the embodiment of the present application

[0021] Figure 4 The figure is a sectional view along the A-A direction in the Figure 3 ;

[0022] Figure 5 The figure is an enlarged view of the I place in the Figure 4 ;

[0023] Figure 6 The figure is a sectional view of the internal structure of the new purification and recovery boiler continuous waste water discharge device according to the embodiment of the present application

[0024] Figure 7 The figure is an enlarged view of the II place in the Figure 6 ;

[0025] Figure 8 The figure is a sectional view of the internal structure of the new purification and recovery boiler continuous waste water discharge device according to the embodiment of the present application Figure 6Enlarged view of the middle III;

[0026] Figure 9 The new purification and recovery boiler waste water device for the embodiment of the application Figure 2 ;

[0027] Figure 10 The perspective view of the boiler body proposed for the embodiment of the application.

[0028] Wherein, 100, main structure shell, 200, water vapor recovery assembly, 300, waste water sensible heat recovery assembly, 400, gas path optimization assembly, 500, boiler body, 101, waste water discharge inlet, 102, discharge water pump, 103, pipeline support, 201, flash chamber, 202, drain pipe network, 203, pressure cavity, 204, water vapor outlet, 205, atomizing plate, 206, array atomizing hole, 207, gas injection pipe, 208, one-way valve, 209, slit, 210, sealing ball, 301, clean water cavity, 302, heat exchange pipe, 303, backwater pump, 304, clean water inlet, 305, waste discharge port, 306, backwater pipeline, 307, clean water pipe, 401, isolation cavity, 402, driving fan, 403, driven fan, 404, driving shaft, 405, first bearing, 406, driven shaft, 407, second bearing, 408, first gear, 409, second gear, 501, continuous drain port, 502, clean water backflow port, 503, control panel, 504, boiler flange, 505, guard plate, 506, backwater flow valve, 507, fixing bolt.

[0029] The accompanying drawings are used to provide further understanding of the application, and constitute a part of the specification, and are used to explain the application together with the embodiments of the application, and do not constitute a limitation on the application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0031] In the description of the application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0032] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 indicated, the application proposes a new type of waste water device for purifying and recycling boiler, which comprises a main structural shell 100, a water vapor recovery assembly 200, a waste water sensible heat recovery assembly 300 and a boiler body 500, the water vapor recovery assembly 200 and the waste water sensible heat recovery assembly 300 are jointly installed on the main structural shell 100 and cooperate with each other in the internal structure of the main structural shell 100, the main structural shell 100 is provided with a discharge water pump 102, the water outlet of the discharge water pump 102 is communicated with the boiler body 500, for pumping and conveying the supersaturated high-temperature waste water generated in the boiler body 500 to the inside of the main structural shell 100 for flash evaporation and heat exchange treatment, so as to realize the reuse of waste heat,

[0033] The water vapor recovery assembly 200 comprises a flash evaporation chamber 201, which is arranged in the internal cavity of the main structural shell 100 and is used for flash evaporation treatment of the high-temperature waste water pumped from the boiler body 500, the inlet end of the flash evaporation chamber 201 is communicated with the discharge water pump 102, so that the high-temperature waste water can be continuously and stably injected into the flash evaporation chamber 201 under the driving of the discharge water pump 102, the top of the flash evaporation chamber 201 is provided with a water vapor outlet 204, so as to timely discharge the high-temperature water vapor formed in the flash evaporation process, and the bottom of the flash evaporation chamber 201 is provided with a drain pipe network 202, for guiding the high-temperature waste water remaining after flash evaporation to the subsequent heat exchange unit for sensible heat recovery.

[0034] The waste water sensible heat recovery assembly 300 comprises a clean water cavity 301 and a backwater pump 303, both of which are also installed on the main structural shell 100, the inside of the clean water cavity 301 is provided with a heat exchange pipe 302, the internal passage of the heat exchange pipe 302 is communicated with the aforementioned drain pipe network 202, so that the high-temperature waste water discharged from the bottom of the flash evaporation chamber 201 can flow into the heat exchange pipe 302 for heat exchange, the high-temperature waste water in the heat exchange pipe 302 will transfer the sensible heat carried to the low-temperature clean water introduced inside and outside the clean water cavity 301 during the flow process, to realize the heating process of the clean water, the backwater pump 303 is mounted outside the clean water cavity 301, the water outlet of the backwater pump 303 is connected with a backwater pipeline 306, one end of the backwater pipeline 306 is communicated with the inside of the clean water cavity 301 through the backwater pump 303, and the other end is communicated with the inside of the boiler body 500, so that the heated clean water can be re-conveyed to the boiler body 500, at the same time, the water vapor outlet 204 at the top of the flash evaporation chamber 201 is also communicated with the backwater pipeline 306, for introducing the high-temperature water vapor generated by flash evaporation into the backwater pipeline 306.

[0035] The pressure in the boiler main body 500 is higher than the pressure in the flash chamber 201, so that the boiler exhaust water can rapidly flash after entering the flash chamber 201, the pressure in the flash chamber 201 is higher than the pressure in the heat exchange pipe 302, so that the high-temperature exhaust water after flashing can smoothly flow into the heat exchange pipe 302 to exchange heat, at the same time, the pressure in the heat exchange pipe 302 is higher than the pressure in the backwater pipe 306, so that the water vapor formed in the flashing process can smoothly enter the backwater pipe 306 through the water vapor outlet 204, and will not backflow or leak into the heat exchange pipe 302, thereby avoiding the leakage of high-temperature water vapor to the part that should not enter.

[0036] In the specific working process, the water pump 102 first pumps the supersaturated high-temperature exhaust water in the boiler main body 500 into the flash chamber 201, the exhaust water flashes after instantaneous pressure reduction in the flash chamber 201, part of the high-temperature water vapor is generated, the water vapor is discharged through the water vapor outlet 204 and directly enters the backwater pipe 306, at the same time, the high-temperature exhaust water after flashing flows into the heat exchange pipe 302 through the bottom drainage pipe network 202, the clean water cavity 301 has pre-stored low-temperature clean water introduced from the outside, the high-temperature exhaust water in the heat exchange pipe 302 transfers heat to the clean water in the clean water cavity 301 through the pipe wall during the flow process, so that the clean water is heated, thereafter, the backwater pump 303 pumps the heated clean water in the clean water cavity 301 into the backwater pipe 306, in this process, the high-temperature water vapor from the water vapor outlet 204 and the heated clean water in the backwater pipe 306 are mixed with each other, so that the clean water is secondarily heated and moderately pressurized, the mixed high-temperature and high-pressure clean water is transported back to the inside of the boiler main body 500 for reuse of the boiler, so that the heat and water resources are recycled.

[0037] Compared with the traditional flash device, the water vapor recovery assembly 200 and the exhaust water sensible heat recovery assembly 300 cooperate to directly introduce the high-temperature water vapor without solid impurities generated in the flashing process into the backflow clean water, without the need for additional dehumidification or condensation steps, thereby reducing energy loss and equipment complexity, and ensuring efficient recovery of heat and water resources.

[0038] As shown in Figure 4 , Figure 5 and Figure 8 , the water vapor outlet 204 is provided with a gas injection pipe 207, the two ends of the gas injection pipe 207 are communicated with the water vapor outlet 204 and the backwater pipe 306 respectively, for stably and directionally transporting the water vapor generated in the flash chamber 201 to the backwater pipe 306, so that the high-temperature water vapor can fully contact with the heated clean water in the backwater pipe 306, thereby realizing heat transfer and reuse.

[0039] The gas injection pipe 207 is provided with a one-way valve 208 installed at one end close to the return water pipe 306 for controlling the flow direction of water vapor. The opening direction of the one-way valve 208 is directed from the water vapor outlet 204 to the return water pipe 306. When the water vapor generated in the flash chamber 201 reaches a set pressure, the one-way valve 208 is automatically opened to allow the high-temperature water vapor to enter the return water pipe 306. When the reverse pressure appears in the return water pipe 306, the one-way valve 208 is automatically closed to prevent the liquid or condensed gas in the return water pipe 306 from flowing back to the inside of the flash chamber 201, thereby ensuring the pressure grading and stable flow direction between the cavities during the flash, heat exchange and return processes, and maintaining the safety and reliability of the fluid circulation inside the device.

[0040] As shown in Figure 2 , Figure 4 , Figure 5 and Figure 6 , the main structure shell 100 is provided with a wastewater discharge port 101 and a pipe support 103. The wastewater discharge port 101 is in communication with the boiler body 500 for introducing the high-temperature wastewater in the boiler body 500 into the main structure shell 100 to realize the collection and subsequent flash treatment of the wastewater. The pipe support 103 is fixedly installed on the outer surface of the main structure shell 100 for supporting and fixing the return water pipe 306 to keep the return water pipe 306 stable during operation, avoiding loosening or stress deformation caused by high-temperature fluid impact or pipe vibration, thereby ensuring the sealing and structural stability of the device during circulation.

[0041] The clean water cavity 301 is provided with a clean water port 304 for connecting with an external clean water source to replenish the clean water cavity 301 in time after system operation or heat exchange, maintain the stability of the water level inside the cavity, and ensure the continuous heat exchange process. The end of the heat exchange pipe 302 is provided with a wastewater discharge port 305 arranged outside the main structure shell 100 for timely discharging the waste water losing sensible heat after heat exchange outside the device to realize the recycling of the high-temperature wastewater and the safe discharge after waste heat recovery.

[0042] The return water pump 303 is provided with an extendable clean water pipe 307 located inside the clean water cavity 301 and capable of extending and contracting according to the water level change in the cavity for sucking the clean water heated after heat exchange in the clean water cavity 301 into the return water pump 303 and then delivering the clean water to the return water pipe 306 to realize the recycling and reuse of the clean water. Through the above structure, the device can realize efficient separation and circulation of the wastewater and clean water during operation, clearly and independently separate the paths of the fluids, and maintain the stability and reliability of the system during the recycling of heat energy.

[0043] As shown in Figure 5 , Figure 6 andFigure 7 As shown, the flash chamber 201 of the embodiment is provided with a pressure chamber 203, which is communicated with the exhaust pump 102, and is used to control the flow stability of the wastewater before entering the flash chamber 201, so that the wastewater entering the flash chamber 201 can maintain a uniform spraying state. The pressure chamber 203 is arranged at the side of the flash chamber 201, so as to realize smooth connection with the exhaust pump 102, reduce the fluid conveying resistance, and ensure the flow continuity and spraying stability of the wastewater before entering the flash chamber.

[0044] A plurality of array atomizing holes 206 are arranged on the atomizing plate 205, which is arranged on the side of the pressure chamber 203 close to the flash chamber 201. After the high-temperature wastewater extracted from the boiler body 500 is sent into the pressure chamber 203 by the exhaust pump 102, the wastewater is sprayed into the flash chamber 201 through the array atomizing holes 206 on the atomizing plate 205 under the action of pressure. The wastewater is dispersed into fine droplets in the spraying process, so that more sufficient heat exchange and phase change process can be realized in the flash chamber 201, the flash process is more uniform and stable, which helps to improve the generation efficiency of water vapor and reduce the influence of thermal stress caused by local temperature difference.

[0045] As shown in Figure 4 , Figure 5 , Figure 6 and Figure 7 , the main structure shell 100 of the embodiment is provided with a gas path optimization assembly 400, which is used to improve the flow direction and flow velocity distribution of the gas in the flash chamber 201, so as to improve the heat exchange efficiency and steam conveying stability of the flash process. The gas path optimization assembly 400 includes a driving fan 402 and a driven fan 403. The driving fan 402 and the driven fan 403 are both rotationally installed in the internal space of the flash chamber 201. The driving fan 402 is arranged close to the atomizing plate 205, so that it can be directly pushed to rotate by the high-speed atomizing water flow sprayed by the atomizing plate 205. The driven fan 403 is arranged close to the water vapor outlet 204, and is used to accelerate the water vapor generated by the flash process and guide it into the water vapor outlet 204 under the driving of the driving fan 402.

[0046] The driving fan 402 is provided with a driving shaft 404, and the first gear 408 is installed on the driving shaft 404. The driven fan 403 is provided with a driven shaft 406, and the second gear 409 is installed on the driven shaft 406. The first gear 408 and the second gear 409 are meshed with each other to form a transmission connection. The first gear 408 serves as a driving end, and is used to drive the second gear 409 to form a speed increasing transmission structure. When the driving fan 402 is pushed to rotate by the atomizing flow, the driven fan 403 can be driven to operate at a higher speed through gear transmission, so as to form a stable airflow path in the flash chamber 201.

[0047] When the high-temperature wastewater is sprayed into the pressure chamber 203 by the discharge pump 102 and sprayed out through the atomizing plate 205, the high-speed atomized water stream sprayed directly acts on the blade surface of the driving fan 402, pushing it to rotate, and the rotation of the driving fan 402 is transmitted to the driven fan 403 through the meshing of the first gear 408 and the second gear 409, so that the driven fan 403 generates synchronous rotation, and guides and accelerates the high-temperature water vapor formed in the flash chamber 201, so that the water vapor quickly flows to the water vapor outlet 204 along the predetermined direction and is discharged into the subsequent recovery channel, realizing dynamic adjustment and optimization of the gas path inside the flash chamber 201. Through the synergistic effect of the gas path optimization assembly 400, the problem of uneven gas-liquid distribution in the flash process can be improved, the water vapor conveying efficiency can be improved, and the overall flow stability of the system can be enhanced.

[0048] As shown in Figure 4 , Figure 5 , Figure 6 and Figure 7 , the gas path optimization assembly 400 proposed in the embodiment includes an isolation chamber 401, which is arranged inside the main structure shell 100 and is used to closedly protect the transmission components, preventing high-temperature moisture and liquid droplets from entering the gear transmission area to affect the operation stability. The isolation chamber 401 is a closed structure, and its internal space is independent of the gas-liquid mixing area of the flash chamber 201, so as to ensure that the gear meshing components operate in a relatively dry environment and prolong the service life of the mechanical transmission system.

[0049] The first gear 408 and the second gear 409 are both arranged inside the isolation chamber 401, and the two gears are meshed with each other and maintain an accurate center distance, so that the transmission process is stable and reliable. The side wall of the isolation chamber 401 is provided with a first bearing 405 and a second bearing 407 for supporting the driving shaft 404 and the driven shaft 406 respectively, and the two groups of bearings jointly ensure that the gear system maintains good coaxiality and low friction state during operation.

[0050] By encapsulating the first gear 408 and the second gear 409 in the isolation chamber 401, not only can the high-temperature steam, water mist or impurities inside the flash chamber 201 be prevented from entering the gear meshing area to cause wear, but also the lubricating oil or metal particles can be prevented from diffusing into the gas flow to affect the flash process, so as to ensure the stable operation of the transmission system while maintaining the cleanliness and structural safety of the gas path.

[0051] As shown in Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 10As shown, the boiler body 500 of the embodiment is provided with a continuous drainage port 501 and a clean water backflow port 502. The continuous drainage port 501 is in communication with the wastewater discharge port 101, and is used to continuously discharge the high-temperature supersaturated wastewater generated in the operation process of the boiler body 500 to the inside of the main structural shell 100, so as to realize continuous drainage and flash evaporation treatment of the wastewater, thereby avoiding the influence of water accumulation or impurity deposition in the boiler on the heating efficiency. The continuous drainage port 501 is designed according to the boiler operation pressure and water level condition, so that the drainage process maintains a stable flow rate, and the flash evaporation chamber 201 obtains a constant liquid inlet amount.

[0052] The clean water backflow port 502 is in communication with the backwater pipeline 306, and is used to receive the heated clean water backflow after the water vapor recovery assembly 200 and the wastewater sensible heat recovery assembly 300 jointly act, complete the backwater supplement process, and realize the recycling of water supply and heat energy of the boiler body 500 in the operation process.

[0053] The clean water backflow port 502 is provided with a backwater flow valve 506. The backwater flow valve 506 is used to adjust the backflow amount of water into the inside of the boiler body 500, so as to control the backflow speed and pressure according to the real-time operation condition of the boiler, maintain the dynamic balance of the water level and temperature in the boiler, form a stable closed loop cycle of the wastewater discharge and clean water backflow process of the boiler, and improve the heat energy utilization rate and operation safety of the whole system.

[0054] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 9 , the boiler body 500 of the embodiment is provided with a control panel 503. The control panel 503 is connected with the discharge water pump 102 and the backwater pump 303 through electrical lines, and is used to centrally control the operation state of the discharge water pump 102 and the backwater pump 303, so as to realize the convenience and automation of system operation.

[0055] The control panel 503 is configured to control the start-stop operation of the discharge water pump 102 and the backwater pump 303, so that the pump can be started or stopped in time when needed, thereby ensuring the continuity and stability of the water flow in the inside of the flash evaporation chamber 201 and the clean water cavity 301. Meanwhile, the control panel 503 can also adjust the rotating speed of the discharge water pump 102 and the backwater pump 303, so as to control the wastewater injection speed in the flash evaporation chamber 201 and the clean water backflow amount by changing the water delivery flow of the pump, so that the system maintains reasonable pressure, temperature and flow rate under different working conditions, and realizes the dynamic balance of the boiler wastewater recovery and heat energy utilization.

[0056] As shown in Figure 1 , Figure 2 , Figure 9 and Figure 10As shown, the side wall of the boiler body 500 is provided with a boiler flange 504 for realizing the sealed connection between the boiler body 500 and external pipelines or equipment, so that the high-temperature and high-pressure fluid can be kept in good sealing at the connection and the disassembly and maintenance are facilitated.

[0057] The side of the boiler body 500 is provided with a guard plate 505 for supporting and fixing the main structural shell 100, so that the main structural shell 100 can keep a stable position during the operation of the boiler and avoid vibration or displacement affecting the flash evaporation and heat exchange processes.

[0058] The guard plate 505 is provided with an array of fixing bolts 507, so that the installation and maintenance of the whole device are more convenient and reliable.

[0059] As shown, Figure 8 As shown, the one-way valve 208 is internally provided with a slit 209 and a sealing ball 210, the two ends of the slit 209 are respectively communicated with the water vapor outlet 204 and the gas injection pipe 207, for forming a controlled flow passage, so that the water vapor can smoothly enter the backwater pipeline 306 from the flash evaporation chamber 201, the sealing ball 210 is arranged between the gas injection pipe 207 and the slit 209, the diameter of the sealing ball 210 is greater than the inner diameter of the slit 209, when the water vapor flows from the water vapor outlet 204 to the gas injection pipe 207, the sealing ball 210 leaves the slit 209 under the action of pressure, so that the gas flow can pass smoothly; when the reverse pressure appears in the backwater pipeline 306, the sealing ball 210 automatically presses the slit 209, so as to prevent the liquid or gas from flowing back to the flash evaporation chamber 201.

[0060] The one-way valve 208 can realize the one-way conduction of the water vapor, ensure the stable pressure distribution between the backwater pipeline 306 and the flash evaporation chamber 201, and effectively prevent the reverse flow phenomenon in the system during the operation, so as to maintain the safe and reliable operation of the gas path and the water path.

[0061] It should be noted that, in this document, the relationship terms such as first and second are used only 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", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0062] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution are not creative, and should belong to the protection scope of the present application.

Claims

1. A novel waste water disposal device for a purification and recovery boiler characterized by: The application relates to a boiler, which comprises a main structure shell (100), a water vapor recovery assembly (200), a waste water sensible heat recovery assembly (300) and a boiler body (500), wherein the water vapor recovery assembly (200) and the waste water sensible heat recovery assembly (300) are arranged on the main structure shell (100), the main structure shell (100) is provided with a drainage water pump (102), and the drainage water pump (102) is connected with the boiler body (500). The water vapor recovery assembly (200) comprises a flash chamber (201), the flash chamber (201) is arranged in the main structure shell (100), the flash chamber (201) is connected with the drainage water pump (102), the top of the flash chamber (201) is provided with a water vapor outlet (204), and the bottom of the flash chamber (201) is provided with a drainage pipe network (202). The waste water sensible heat recovery assembly (300) comprises a clean water cavity (301) and a backwater pump (303), the clean water cavity (301) and the backwater pump (303) are arranged on the main structure shell (100), the clean water cavity (301) is internally provided with a heat exchange pipe (302), the heat exchange pipe (302) is communicated with the drainage pipe network (202), the backwater pump (303) is provided with a backwater pipeline (306), one end of the backwater pipeline (306) is communicated with the inside of the clean water cavity (301) through the backwater pump (303), the other end of the backwater pipeline (306) is communicated with the inside of the boiler body (500), the water vapor outlet (204) is communicated with the backwater pipeline (306), and the pressure in the boiler body (500) is greater than the pressure in the flash chamber (201). The pressure in the flash chamber (201) is greater than the pressure in the heat exchange pipe (302), and the pressure in the heat exchange pipe (302) is greater than the pressure in the backwater pipeline (306). The water vapor outlet (204) is provided with an air injection pipe (207), the air injection pipe (207) is communicated with the water vapor outlet (204) and the backwater pipeline (306) respectively, the air injection pipe (207) is provided with a one-way valve (208), the one-way valve (208) is configured to be one-way conducted from the water vapor outlet (204) to the backwater pipeline (306). The flash chamber (201) is provided with a pressure cavity (203), the pressure cavity (203) is communicated with the drainage water pump (102), one side of the pressure cavity (203) close to the flash chamber (201) is provided with an atomizing plate (205), and the atomizing plate (205) is arrayed with arrayed atomizing holes (206). The main structure shell (100) is internally provided with a gas path optimization assembly (400), the gas path optimization assembly (400) comprises a driving fan (402) and a driven fan (403), the driving fan (402) and the driven fan (403) are rotationally arranged in the flash chamber (201), the driving fan (402) corresponds to the position of the atomizing plate (205), and the driven fan (403) corresponds to the position of the water vapor outlet (204).

2. The novel purification recovery boiler continuous effluent device according to claim 1, characterized in that: The main structure shell (100) is provided with a wastewater discharge port (101) and a pipeline support (103), the wastewater discharge port (101) is connected with the boiler main body (500), and the backwater pipeline (306) is fixed on the pipeline support (103); the clean water cavity (301) is provided with a clean water outlet (304), the clean water outlet (304) is connected with an external clean water source, the end of the heat exchange pipe (302) is provided with a waste discharge port (305), the waste discharge port (305) is located outside the main structure shell (100), and the backwater pump (303) is provided with an extendable clean water pipe (307), and the clean water pipe (307) is located inside the clean water cavity (301).

3. The novel purification and recovery boiler combined effluent device according to claim 2, characterized in that The driving fan (402) is provided with a driving shaft (404), the driving shaft (404) is provided with a first gear (408), the driven fan (403) is provided with a driven shaft (406), the driven shaft (406) is provided with a second gear (409), the first gear (408) and the second gear (409) are engaged, and the first gear (408) is configured to drive the second gear (409) to form a speed increasing transmission structure.

4. The novel purification and recovery boiler combined effluent device according to claim 3, characterized in that: The air path optimization assembly (400) comprises an isolation cavity (401), the isolation cavity (401) is arranged inside the main structure shell (100), and the first gear (408) and the second gear (408) are arranged inside the isolation cavity (401). The side wall of the isolation cavity (401) is provided with a first bearing (405) and a second bearing (407), the driving shaft (404) is rotatably arranged on the first bearing (405), and the driven shaft (406) is rotatably arranged on the second bearing (407).

5. The novel waste water removal device for purification and recovery boiler as claimed in claim 2 wherein: The boiler main body (500) is provided with a continuous drainage port (501) and a clean water backflow port (502), the continuous drainage port (501) is communicated with the wastewater discharge port (101), the clean water backflow port (502) is communicated with the backwater pipeline (306), and the clean water backflow port (502) is provided with a backwater flow valve (506).

6. The novel purification and recovery boiler combined effluent device according to claim 1, characterized in that: The boiler main body (500) is provided with a control panel (503), the control panel (503) is electrically connected with the inlet water pump (102) and the backwater pump (303), and the control panel (503) is configured to control the start-stop and rotating speed of the inlet water pump (102) and the backwater pump (303).

7. The novel purification and recovery boiler combined effluent device according to claim 1, characterized in that: The side wall of the boiler main body (500) is provided with a boiler flange (504), one side of the boiler main body (500) is provided with a guard plate (505), the main structure shell (100) is arranged on the guard plate (505), and the guard plate (505) is arranged with fixed bolts (507).

8. The novel purification and recovery boiler combined effluent device according to claim 1, characterized in that: The one-way valve (208) is provided with a slit (209) and a sealing ball (210), the two ends of the slit (209) are communicated with the water vapor outlet (204) and the gas injection pipe (207) respectively, the sealing ball (210) is arranged between the gas injection pipe (207) and the slit (209), and the diameter of the sealing ball (210) is greater than the inner diameter of the slit (209).

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