Boiler waste heat recovery type sewage treatment device based on water quality self-detection

Abstract

The utility model discloses a boiler waste heat recovery type sewage treatment device based on water quality self-detection, which relates to the technical field of boiler sewage recovery, and comprises a heat exchanger and a treatment box, one side of the heat exchanger is provided with a water inlet, the water inlet is communicated with a water inlet pipe, and the water inlet pipe is provided with a pretreatment component for pretreating sewage; a water outlet is formed in the lower portion of the heat exchanger, a connecting pipe is communicated to the water outlet, one end of the connecting pipe is connected with the water outlet, the other end of the connecting pipe is communicated with the treatment box, a fluid inlet is formed in the other side of the heat exchanger, and a fluid outlet is formed in the bottom of the heat exchanger. Then the sewage enters a filtering pipeline of the pretreatment assembly, in the filtering pipeline, the sewage is filtered by a coarse filter screen, large-particle impurities and suspended solids in the sewage are intercepted, the sewage is preliminarily purified, the coarse filter screen can be cleaned through a cleaning mechanism, and the filtering effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of boiler wastewater recovery technology, specifically to a boiler waste heat recovery wastewater treatment device based on water quality self-monitoring. Background Technology

[0002] Thermal power plants not only produce electricity but also provide heat for residents and industrial production. People's lives and industrial production can no longer function without thermal power plants. Thermal power plants generate electricity by burning coal through multiple sets of boilers. Boiler wastewater is the boiler water that is periodically discharged from the boiler and contaminated with salt and slag. Most existing thermal power plant boiler wastewater recovery devices take water from inside the device for testing or use portable water quality testers to take water and monitor it in real time, so as to make reasonable use of the wastewater according to the water quality.

[0003] Patent document CN220436492U discloses a wastewater recovery device for thermal power plant boilers, including a water storage tank, an extraction pipe, an extraction cylinder, a filter grid, and a wastewater treatment tank. The sealing rubber gasket between the threaded groove and the threaded connecting pipe facilitates the sealing connection between the extraction pipe and the extraction cylinder, preventing insufficient pressure and difficulty in extraction due to inadequate sealing. The reciprocating telescopic motor, telescopic rod, and extraction plate facilitate electrically controlled operation of wastewater extraction, reducing manual operation. The threaded pipe and threaded opening facilitate the portable installation and cleaning of the water quality testing cylinder. Furthermore, the extraction pipe and extraction cylinder are also connected by a screw thread, which facilitates overall disassembly and cleaning and replacement.

[0004] When the aforementioned patent documents are used, the sewage does not undergo necessary pretreatment before passing through the sewage heat exchanger, such as removing large particles or adjusting the water quality and quantity. This may result in a large number of harmful substances in the sewage reacting chemically with the heat source inside the heat exchanger, further deteriorating the water quality and potentially causing blockage and corrosion of the heat exchanger. Utility Model Content

[0005] To address the aforementioned issues, a boiler waste heat recovery wastewater treatment device based on water quality self-monitoring is provided. By installing a pretreatment component for pre-treating wastewater, the technical problem of wastewater causing blockage and corrosion to the heat exchanger is solved.

[0006] To address the problems of existing technologies, this utility model provides a boiler waste heat recovery wastewater treatment device based on water quality self-monitoring, comprising a heat exchanger and a treatment box. An inlet is provided on one side of the heat exchanger, and an inlet pipe is connected to the inlet. A pretreatment component for pre-treating wastewater is installed on the inlet pipe. An outlet is provided below the heat exchanger, and a connecting pipe is connected to the outlet. One end of the connecting pipe is connected to the outlet, and the other end is connected to the treatment box. A fluid inlet is provided on the other side of the heat exchanger, and a fluid outlet is provided at the bottom of the heat exchanger. A fine filter screen, activated carbon, and filter cotton are arranged sequentially from top to bottom inside the treatment box. A disassembly component for quickly disassembling and replacing the fine filter screen, activated carbon, and filter cotton is also provided inside the treatment box.

[0007] Preferably, the pretreatment component includes a filter pipe and a coarse filter screen; the filter pipe is disposed on the water inlet pipe; the coarse filter screen is disposed inside the filter pipe, and a cleaning mechanism for cleaning the coarse filter screen is also disposed on one side of the filter pipe.

[0008] Preferably, the cleaning mechanism includes a movable plate, a cleaning column, a movable wheel, a threaded rod, a first motor, an inclined block, a connecting block, and a smooth rod; the movable plate is installed inside the filter pipe and located on one side of the coarse filter screen, the movable plate has a through hole for water flow, and a reset mechanism is also provided on the upper and lower sides of the movable plate; the cleaning column is installed on one side of the movable plate; the movable wheel is installed on the other side of the movable plate; the threaded rod is disposed inside the filter pipe; the first motor is installed at the top of the filter pipe, and the output end of the first motor is connected to the threaded rod; the inclined block is disposed on the threaded rod; the connecting block is installed on one side of the inclined block; the smooth rod is disposed inside the filter pipe and located on one side of the threaded rod, and the connecting block is slidably disposed on the smooth rod.

[0009] Preferably, the reset mechanism includes a first slide rod, a moving block, and a first spring; a rectangular groove is formed on the inner wall of the filter pipe, and the first slide rod is disposed in the rectangular groove; the moving block is mounted on a moving plate and disposed on the first slide rod; the first spring is sleeved on the first slide rod, one end of the first spring abuts against the moving block, and the other end of the first spring abuts against the inner wall of the rectangular groove.

[0010] Preferably, a collection box is installed at the bottom of the filter pipe, and a rectangular through hole is provided between the collection box and the filter pipe.

[0011] Preferably, the disassembly assembly includes a placement seat, a placement plate, an extension plate, a connecting box, a second slide rod, a connecting plate, a connecting rod, a second spring, and a stop block; the placement seat is disposed on the inner wall of the processing box; the placement plate is disposed on the placement seat; the extension plate is installed on both sides of the fine filter screen; the connecting box is installed on the inner wall of the processing box; two second slide rods are provided and symmetrically disposed inside the connecting box; the connecting plate is slidably disposed on the second slide rods; one end of the connecting plate extends outward through the processing box; the connecting rod is disposed at the bottom of the connecting plate; the second spring is sleeved on the connecting rod, one end of the second spring abuts against the connecting plate, and the other end of the second spring abuts against the inner wall of the processing box; the stop block is disposed at one end of the connecting rod.

[0012] Preferably, a third spring is installed on the placement base, and the two ends of the third spring are respectively abutted against the upper end surface of the placement base and the lower end surface of the placement plate.

[0013] The advantages of this utility model compared to the prior art are:

[0014] 1. Wastewater enters the inlet pipe through the inlet and undergoes preliminary treatment in the pretreatment unit. This unit removes large particulate impurities and suspended solids from the wastewater, preventing them from entering the heat exchanger and causing blockages or affecting heat exchange efficiency. The pretreated wastewater then enters the heat exchanger and exchanges heat with a heat medium, such as boiler exhaust gas or high-temperature water, entering from the fluid inlet. The wastewater absorbs waste heat from the heat medium, raising its temperature, while the heat medium cools down by releasing heat. This process preheats the wastewater and recovers waste heat from the boiler wastewater, improving energy efficiency. Furthermore, a pH sensor installed inside the treatment tank measures the acidity or alkalinity of the water, enabling self-monitoring of water quality.

[0015] 2. When the fine filter needs to be disassembled, the operator can manually pull the connecting plate upwards. As the connecting plate slides along the second slide rod, it moves the connecting rod and the abutment block upwards, stretching the second spring. At this time, the fine filter can be moved out of the treatment box. When installation is required, pull the connecting plate upwards, which moves the connecting rod and the abutment block upwards. Place the extension plates installed at both ends of the fine filter on the placement plate and release the connecting plate. The second spring will then restore its elastic deformation, causing the abutment block to fit tightly against the extension plate, thus achieving the installation of the fine filter. The disassembly and assembly of activated carbon and filter cotton are performed in the same way, making it easy to disassemble and replace the fine filter, activated carbon, and filter cotton. The operation is simple and ensures the filtration effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of a boiler waste heat recovery sewage treatment device based on water quality self-monitoring from a first perspective.

[0017] Figure 2 This is a cross-sectional view of a boiler waste heat recovery sewage treatment device based on water quality self-monitoring, viewed from the front.

[0018] Figure 3 This is a three-dimensional diagram of the heat exchanger and inlet pipe in a boiler waste heat recovery sewage treatment device based on water quality self-monitoring.

[0019] Figure 4 This is a cross-sectional view of the filter pipe in a boiler waste heat recovery sewage treatment device based on water quality self-monitoring, viewed from the front.

[0020] Figure 5 This is a three-dimensional sectional view of the filter pipe in a boiler waste heat recovery sewage treatment device based on water quality self-monitoring.

[0021] Figure 6 This is a boiler waste heat recovery wastewater treatment device based on water quality self-monitoring. Figure 4 Enlarged view of point A in the middle.

[0022] Figure 7 This is a cross-sectional view of the treatment tank in a boiler waste heat recovery sewage treatment device based on water quality self-monitoring, viewed from the front.

[0023] Figure 8 This is a boiler waste heat recovery wastewater treatment device based on water quality self-monitoring. Figure 7 Enlarged view of section B in the middle.

[0024] The diagram is labeled as follows: 1. Heat exchanger; 2. Inlet; 3. Inlet pipe; 4. Pretreatment assembly; 41. Filter pipe; 42. Coarse filter screen; 43. Moving plate; 44. Cleaning column; 45. Moving wheel; 46. Threaded rod; 47. First motor; 48. Inclined block; 49. Connecting block; 410. Smooth rod; 411. First slide rod; 412. Moving block; 413. First spring; 414. Collection box; 5. Outlet; 6. 7. Connecting pipe; 8. Processing box; 9. Fine filter screen; 10. Activated carbon; 11. Filter cotton; 12. Disassembly assembly; 13. Placement seat; 14. Placement plate; 15. Extension plate; 16. Connecting box; 17. Second slide bar; 18. Connecting plate; 19. Connecting rod; 10. Second spring; 10. Abutment block; 1110. Third spring; 112. Fluid inlet; 13. Fluid outlet. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] See Figures 1 to 8 As shown, this utility model provides a boiler waste heat recovery sewage treatment device based on water quality self-detection, including a heat exchanger 1 and a treatment box 7. A water inlet 2 is provided on one side of the heat exchanger 1, and a water inlet pipe 3 is connected to the water inlet 2. A pretreatment component 4 for pretreating sewage is installed on the water inlet pipe 3. A water outlet 5 is provided below the heat exchanger 1, and a connecting pipe 6 is connected to the water outlet 5. One end of the connecting pipe 6 is connected to the water outlet 5, and the other end of the connecting pipe 6 is connected to the treatment box 7. A fluid inlet 12 is provided on the other side of the heat exchanger 1, and a fluid outlet 13 is provided at the bottom of the heat exchanger 1. A fine filter screen 8, activated carbon 9, and filter cotton 10 are arranged sequentially from top to bottom in the treatment box 7. A disassembly component 11 for quickly disassembling and replacing the fine filter screen 8, activated carbon 9, and filter cotton 10 is also provided in the treatment box 7.

[0027] Wastewater enters the inlet pipe 3 through inlet 2 and undergoes preliminary treatment in the pretreatment component 4 to remove large particulate impurities and suspended solids, preventing these impurities from entering the heat exchanger 1 and causing blockage or affecting heat exchange efficiency. The pretreated wastewater then enters the heat exchanger 1 and exchanges heat with a heat medium, such as boiler exhaust gas or high-temperature water, entering from the fluid inlet 12. During this process, the wastewater absorbs residual heat from the heat medium, increasing its temperature, while the heat medium cools down by releasing heat. This process preheats the wastewater and recovers residual heat from the boiler wastewater, improving energy efficiency. After treatment by heat exchanger 1, the wastewater enters treatment tank 7 through outlet 5 and connecting pipe 6. Inside treatment tank 7, the wastewater passes sequentially through fine filter screen 8, activated carbon 9, and filter cotton 10. Fine filter screen 8 removes smaller particles of impurities; activated carbon 9 uses its strong adsorption capacity to remove organic matter, residual chlorine, and other harmful substances from the wastewater; and filter cotton 10 further intercepts fine particles to ensure the quality of the effluent. The disassembly assembly 11 inside treatment tank 7 allows operators to quickly and easily replace fine filter screen 8, activated carbon 9, and filter cotton 10, ensuring the filtration effect.

[0028] The treatment tank 7 is also equipped with a pH sensor, which is used to measure the acidity or alkalinity of the water. Specifically, this pH sensor is not within the scope of protection of this application, so it is not shown in the figure. The pH value is determined by detecting the concentration of hydrogen ions in the water by the pH sensor. The appropriate pH range needs to be determined according to the specific situation to achieve water quality self-detection.

[0029] See Figures 1 to 6 As shown, the pretreatment component 4 includes a filter pipe 41 and a coarse filter screen 42; the filter pipe 41 is installed on the water inlet pipe 3; the coarse filter screen 42 is installed inside the filter pipe 41, and a cleaning mechanism for cleaning the coarse filter screen 42 is also installed inside the filter pipe 41 on one side of the coarse filter screen 42.

[0030] Wastewater enters the inlet pipe 3 through the inlet 2, and then enters the filter pipe 41 of the pretreatment component 4. Inside the filter pipe 41, the wastewater is filtered by the coarse filter screen 42, which intercepts large particles and suspended solids in the wastewater, thus achieving preliminary purification. The wastewater then enters the heat exchanger 1 for waste heat recovery. As the filtration process proceeds, impurities gradually accumulate on the coarse filter screen 42, leading to a decrease in filtration efficiency or even blockage. At this time, the coarse filter screen 42 can be cleaned by the cleaning mechanism to ensure the filtration effect.

[0031] See Figures 4 to 6 As shown, the cleaning mechanism includes a movable plate 43, a cleaning column 44, a movable wheel 45, a threaded rod 46, a first motor 47, an inclined block 48, a connecting block 49, and a smooth rod 410. The movable plate 43 is installed inside the filter pipe 41 and located on one side of the coarse filter screen 42. The movable plate 43 has a through hole for water flow, and a reset mechanism is also provided on the upper and lower sides of the movable plate 43. The cleaning column 44 is installed on one side of the movable plate 43. The movable wheel 45 is installed on the other side of the movable plate 43. The threaded rod 46 is located inside the filter pipe 41. The first motor 47 is installed on the top of the filter pipe 41, and the output end of the first motor 47 is connected to the threaded rod 46. The inclined block 48 is located on the threaded rod 46. The connecting block 49 is installed on one side of the inclined block 48. The smooth rod 410 is located inside the filter pipe 41 and located on one side of the threaded rod 46. The connecting block 49 is slidably mounted on the smooth rod 410.

[0032] When the coarse filter screen 42 needs to be cleaned after a period of use, the first motor 47 is started, which drives the threaded rod 46 to rotate. The threaded rod 46 then moves the inclined block 48, which in turn moves the connecting block 49 on the smooth rod 410 to prevent the inclined block 48 from rotating during movement. The movement of the inclined block 48 also pushes the moving wheel 45 to move, which in turn moves the moving plate 43. The moving plate 43 then moves the cleaning column 44 into the filter holes of the coarse filter screen 42. The radius of the cleaning column 44 is smaller than the radius of the filter holes in the coarse filter screen 42, thus pushing out the impurities that are stuck and clogging the filter holes. This cleans the coarse filter screen 42 and prevents it from becoming clogged, which would affect the filtration effect.

[0033] See Figure 6 As shown, the reset mechanism includes a first slide rod 411, a moving block 412, and a first spring 413; a rectangular groove is provided on the inner wall of the filter pipe 41, and the first slide rod 411 is disposed in the rectangular groove; the moving block 412 is mounted on the moving plate 43 and disposed on the first slide rod 411; the first spring 413 is sleeved on the first slide rod 411, one end of the first spring 413 abuts against the moving block 412, and the other end of the first spring 413 abuts against the inner wall of the rectangular groove.

[0034] When the movement of the moving wheel 45 drives the moving plate 43 to move, the moving blocks 412 on the upper and lower sides of the moving plate 43 move on the first slide rod 411 and squeeze the first spring 413 of the first slide rod 411, thereby making the moving plate 43 more stable when moving.

[0035] See Figure 5 As shown, a collection box 414 is installed at the bottom of the filter pipe 41, and a rectangular through hole is provided between the collection box 414 and the filter pipe 41.

[0036] When the cleaning column 44 pushes out the impurities that are stuck in the filter holes, the impurities will fall into the collection box 414 through the rectangular through hole due to their own gravity. The collection box 414 collects the impurities for subsequent processing.

[0037] See Figure 7 and Figure 8 As shown, the disassembly assembly 11 includes a placement seat 1101, a placement plate 1102, an extension plate 1103, a connecting box 1104, a second slide bar 1105, a connecting plate 1106, a connecting rod 1107, a second spring 1108, and an abutment block 1109; the placement seat 1101 is disposed on the inner wall of the processing box 7; the placement plate 1102 is disposed on the placement seat 1101; the extension plate 1103 is installed on both sides of the fine filter screen 8; the connecting box 1104 is installed on the inner wall of the processing box 7; the second slide bar 1105... Two connecting rods are provided and symmetrically arranged inside the connecting box 1104; the connecting plate 1106 is slidably mounted on the second sliding rod 1105; one end of the connecting plate 1106 extends outward through the processing box 7; the connecting rod 1107 is located at the bottom of the connecting plate 1106; the second spring 1108 is sleeved on the connecting rod 1107, one end of the second spring 1108 abuts against the connecting plate 1106, and the other end of the second spring 1108 abuts against the inner wall of the processing box 7; the abutment block 1109 is located at one end of the connecting rod 1107.

[0038] When the fine filter screen 8 needs to be disassembled, the operator can manually pull the connecting plate 1106 upwards. As the connecting plate 1106 slides along the second slide rod 1105, the connecting plate 1106 drives the connecting rod 1107 and the abutment block 1109 to move upwards, and also drives the second spring 1108 to stretch. At this time, the fine filter screen 8 can be moved out of the processing box 7. When installation is required, by pulling the connecting plate 1106 upwards, the connecting plate 1106 drives the connecting rod 1107 and the abutment block 1109 to move upwards. Move upwards, at this time place the extension plates 1103 installed at both ends of the fine filter screen 8 on the placement plate 1102, and loosen the connecting plate 1106. The second spring 1108 restores its elastic deformation, causing the abutment block 1109 to tightly adhere to the extension plate 1103, thereby achieving the installation of the fine filter screen 8. The disassembly and assembly operations of the activated carbon 9 and filter cotton 10 are the same as above, which facilitates the disassembly and replacement of the fine filter screen 8, activated carbon 9 and filter cotton 10, and the operation is simple, ensuring the filtration effect.

[0039] See Figure 8 As shown, a third spring 1110 is installed on the placement base 1101. The two ends of the third spring 1110 are respectively abutted against the upper end surface of the placement base 1101 and the lower end surface of the placement plate 1102.

[0040] A third spring 1110 is provided between the placement seat 1101 and the placement plate 1102. The elasticity of the third spring 1110 reduces the impact force of sewage falling, protects the fine filter screen 8, activated carbon 9 and filter cotton 10, and extends their service life.

[0041] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A boiler waste heat recovery wastewater treatment device based on water quality self-monitoring, characterized in that, The system includes a heat exchanger (1) and a treatment tank (7). A water inlet (2) is provided on one side of the heat exchanger (1), and a water inlet pipe (3) is connected to the water inlet (2). A pretreatment component (4) for pretreating wastewater is installed on the water inlet pipe (3). A water outlet (5) is provided below the heat exchanger (1), and a connecting pipe (6) is connected to the water outlet (5). One end of the connecting pipe (6) is connected to the water outlet (5), and the other end of the connecting pipe (6) is connected to the treatment tank (7). A fluid inlet (12) is provided on the other side of the heat exchanger (1), and a fluid outlet (13) is provided at the bottom of the heat exchanger (1). The treatment tank (7) contains water from... The pretreatment assembly (4) is arranged from top to bottom as follows: a fine filter screen (8), activated carbon (9), and filter cotton (10). The treatment box (7) is also equipped with a disassembly assembly (11) for quickly disassembling and replacing the fine filter screen (8), activated carbon (9), and filter cotton (10). The pretreatment assembly (4) includes a filter pipe (41) and a coarse filter screen (42). The filter pipe (41) is located on the water inlet pipe (3). The coarse filter screen (42) is located inside the filter pipe (41). A cleaning mechanism for cleaning the coarse filter screen (42) is also provided on one side of the filter pipe (41). The cleaning mechanism includes a moving plate (43), a cleaning column (44), and a moving plate (45). The filter consists of a moving wheel (45), a threaded rod (46), a first motor (47), an inclined block (48), a connecting block (49), and a smooth rod (410). The moving plate (43) is installed inside the filter pipe (41) and located on one side of the coarse filter screen (42). The moving plate (43) has a through hole for water flow, and a reset mechanism is provided on the upper and lower sides of the moving plate (43). The cleaning column (44) is installed on one side of the moving plate (43). The moving wheel (45) is installed on the other side of the moving plate (43). The threaded rod (46) is located inside the filter pipe (41). The first motor (47) is installed at the top of the filter pipe (41), and the output of the first motor (47) is... The end is connected to the threaded rod (46); the inclined block (48) is disposed on the threaded rod (46); the connecting block (49) is installed on one side of the inclined block (48); the smooth rod (410) is disposed inside the filter pipe (41) and located on one side of the threaded rod (46), and the connecting block (49) is slidably disposed on the smooth rod (410); the reset mechanism includes a first slide rod (411), a moving block (412) and a first spring (413); a rectangular groove is opened on the inner wall of the filter pipe (41), and the first slide rod (411) is disposed in the rectangular groove; the moving block (412) is installed on the moving plate (43), and the moving block (412) is disposed on the first slide rod (411);The first spring (413) is sleeved on the first slide rod (411), one end of the first spring (413) abuts against the moving block (412), and the other end of the first spring (413) abuts against the inner wall of the rectangular groove; a collection box (414) is installed at the bottom of the filter pipe (41), and a rectangular through hole is provided between the collection box (414) and the filter pipe (41).

2. The boiler waste heat recovery wastewater treatment device based on water quality self-detection according to claim 1, characterized in that, The disassembly assembly (11) includes a placement seat (1101), a placement plate (1102), an extension plate (1103), a connecting box (1104), a second slide bar (1105), a connecting plate (1106), a connecting rod (1107), a second spring (1108), and an abutment block (1109); the placement seat (1101) is disposed on the inner wall of the processing box (7); the placement plate (1102) is disposed on the placement seat (1101); the extension plate (1103) is installed on both sides of the fine filter screen (8); the connecting box (1104) is installed on the inner wall of the processing box (7); the second slide bar (1105) is mounted on the inner wall of the processing box (7); the second slide bar (1106) is mounted on the inner wall of the processing box (7); the second slide bar (1107) is mounted on the inner wall of the processing box (7); the second slide bar (1108) is mounted on the inner wall of the processing box (7); the second slide bar (1106) is mounted on the inner wall of the processing box (7); the second slide bar (1107 ... 5) Two are provided and symmetrically arranged in the connecting box (1104); the connecting plate (1106) is slidably arranged on the second sliding rod (1105); one end of the connecting plate (1106) extends outward through the processing box (7); the connecting rod (1107) is arranged at the bottom of the connecting plate (1106); the second spring (1108) is sleeved on the connecting rod (1107), one end of the second spring (1108) abuts against the connecting plate (1106), and the other end of the second spring (1108) abuts against the inner wall of the processing box (7); the abutting block (1109) is arranged at one end of the connecting rod (1107).

3. The boiler waste heat recovery wastewater treatment device based on water quality self-detection according to claim 2, characterized in that, A third spring (1110) is installed on the placement base (1101), and the two ends of the third spring (1110) are respectively abutted against the upper end surface of the placement base (1101) and the lower end surface of the placement plate (1102).

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