High-efficiency concentration tower for zero discharge of wastewater

Abstract

The invention discloses an efficient concentration tower for wastewater zero discharge, and relates to the technical field of concentration towers, the efficient concentration tower comprises a bottom base plate, a tower body is mounted on the upper end surface of the bottom base plate, a wastewater input assembly is arranged on one side of the tower body, and a heater is embedded in the inner wall of the lower end of the tower body; a waste discharge assembly for discharging concentrated wastewater is arranged at the lower end of the tower body, a water blowing assembly for enabling the wastewater to roll in the tower body is further arranged in the tower body, a steam outlet is formed in one side of the upper end of the tower body, and a gas-liquid separator is arranged at the upper end of one side of the tower body. Discharged steam can be liquefied through the arranged condenser, purified water formed by distillation can be collected, reutilization of water resources is achieved, meanwhile, negative pressure can be established in the internal space of the tower body during working through the arranged pressure sensor and the arranged vacuum pump, the boiling point of water can be reduced in the negative pressure state, and the water quality is improved. Furthermore, the evaporation efficiency can be effectively improved, and the energy consumption required for heating the wastewater is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of concentration towers, in particular to a high-efficiency concentration tower for zero wastewater discharge. Background Art

[0002] In the process of industrial production and sewage treatment, it is often necessary to concentrate wastewater to reduce the volume of wastewater and reduce the cost and difficulty of subsequent treatment. Wastewater concentration towers are generally used to treat wastewater.

[0003] For example, the prior art CN210048614U proposes an industrial wastewater evaporation and concentration tower system, which includes a wastewater receiving tank, an air cooling unit, a wastewater source, an evaporation and concentration tower, a demister, a fan, a spray device, a circulation pump, a separator and a dryer. The concentration tower system uses air or flue gas as a heat source and carrier for wastewater evaporation and concentration, avoiding the scaling problem of conventional evaporation equipment and achieving efficient evaporation and concentration of industrial wastewater.

[0004] However, when the above-mentioned concentration tower is used, its steam is directly discharged without effective condensation treatment, resulting in energy waste and increased subsequent treatment costs. At the same time, during the treatment, as the concentration proceeds, the wastewater concentration gradually increases, and the substances in the wastewater settle to the bottom of the tower body. After the impurities are deposited, a sediment layer will be formed. This sediment layer is very likely to cause blockage of the waste discharge pipe when discharged. In response to the above problems, we provide a high-efficiency concentration tower for zero wastewater discharge to solve the above-mentioned problems. Summary of the Invention

[0005] The object of the present invention is to provide a high-efficiency concentrating tower for zero-discharge of wastewater to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A high-efficiency concentration tower for zero discharge of wastewater comprises a base plate, the upper end surface of the base plate is installed with a tower body, one side of the tower body is provided with a wastewater input component, the inner wall of the lower end of the tower body is embedded with a heater, the lower end of the tower body is provided with a waste discharge component for discharging concentrated wastewater, the interior of the tower body is also provided with a water drum component for causing the wastewater to tumble inside the tower body, a steam outlet is provided on one side of the upper end of the tower body, a gas-liquid separator is provided on the upper end of one side of the tower body, the gas-liquid separator input port is connected to the steam outlet, a water collecting component is provided at the lower end of the gas-liquid separator, the gas outlet end of the gas-liquid separator is connected to a connecting pipe, the lower end of the connecting pipe is connected to a condenser, the water outlet end of the condenser is provided with a water storage component, a vacuum pump is installed on one side of the base plate, the exhaust end of the vacuum pump is connected to an exhaust pipe, the suction end of the vacuum pump is connected to a bottom connecting pipe, and the bottom connecting pipe is connected to the exhaust port of the condenser.

[0007] As a further solution of the present invention: the wastewater input component includes a wastewater pipe, which is fixedly connected to one side of the lower end of the tower body, the wastewater pipe is connected to the inside of the tower body, and a first solenoid valve is installed on the wastewater pipe.

[0008] As a further solution of the present invention: the waste discharge assembly includes a bottom cylinder, which is fixedly connected to the middle of the lower end of the tower body, and the bottom cylinder is communicated with the inside of the tower body. A first motor is installed at the lower end of the bottom cylinder, and a spiral conveying rod is connected to the output end of the first motor. A plurality of scraping rods are fixedly connected to the upper end of the spiral conveying rod, and the lower end of the scraping rod contacts and slides with the lower end surface of the tower body. One side of the lower end of the drive shaft is fixedly connected to a waste discharge pipe communicated with the bottom cylinder; a third solenoid valve is installed on the waste discharge pipe.

[0009] As a further solution of the present invention: the water-drum assembly includes a central tube, which is arranged in the middle of the bottom of the tower body. The upper end and the middle of the central tube are fixedly connected to a fixing frame, and the two ends of the fixing frame are respectively fixedly connected to the inner wall of the tower body. The upper end of the central tube is provided with a plurality of water spray outlets, and the plurality of water spray outlets are evenly distributed. A pumping assembly for pumping water is provided in the central tube.

[0010] As a further solution of the present invention: the pumping assembly includes a waterproof motor, which is fixedly connected to the upper end of the central tube, the output end of the waterproof motor is fixedly connected to a drive shaft, the lower end of the central tube is fixedly connected to a shaft frame, the drive shaft is rotatably connected to the shaft frame, the position where the lower end of the drive shaft passes through the shaft frame is fixedly connected to an axial flow blade, and the position where the lower end of the drive shaft passes through the waterproof motor is also fixedly connected to a stirring blade.

[0011] As a further solution of the present invention: the water collection assembly includes a wastewater tank, which is arranged on one side of the tower body and below the gas-liquid separator. Fixed arms are fixedly connected to both sides of the wastewater tank, and the fixed arms are fixedly connected to the tower body. A connecting pipe is provided at the upper end of the wastewater tank, which is connected to the drainage end of the gas-liquid separator. A return pipe is connected to the lower end of the wastewater tank, and the lower end of the return pipe is connected to the tower body. A second solenoid valve is provided on the return pipe.

[0012] As a further solution of the present invention: the water storage assembly includes a water storage tank, which is fixedly connected to a position on one side of the upper end surface of the base plate. A water inlet is provided at the upper end of the water storage tank, which is connected to the drainage end of the condenser. The lower end of the water storage tank is provided with a drainage assembly for discharging the stored water.

[0013] As a further solution of the present invention: the drainage assembly includes a clean water pipe, which is arranged at the lower end of the water storage tank, the clean water pipe is connected to the inside of the water storage tank, and a drainage valve is provided on the clean water pipe.

[0014] As a further solution of the present invention: a shielding cover is provided above the exhaust pipe, a lower end of the shielding cover is fixedly connected to a plurality of support rods, and the lower ends of the support rods are fixedly connected to the upper end of the exhaust pipe.

[0015] As a further solution of the present invention: a pressure sensor for detecting the air pressure inside the tower body is provided on the tower body, and a controller is also provided on the bottom substrate. The pressure sensor, vacuum pump, first motor, first solenoid valve, third solenoid valve, and second solenoid valve are all electrically connected to the controller.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention can liquefy the exhausted steam through the condenser and collect the clean water formed by distillation to realize the reuse of water resources. At the same time, the pressure sensor and vacuum pump can establish negative pressure in the internal space of the tower body during operation. The boiling point of water will be reduced under the negative pressure state, thereby effectively improving the evaporation efficiency and reducing the energy consumption required for heating the wastewater. At the same time, the water-drum assembly can continuously move the wastewater at the bottom of the tower body to keep the wastewater in motion. This can not only effectively improve the uniformity of heating the wastewater, but also prevent the wastewater from precipitating to form a sediment layer covering the heating position, thereby ensuring the stable progress of the concentration work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the back side of the present invention.

[0019] Figure 3 It is a schematic diagram of the internal structure of the present invention and the tower body.

[0020] Figure 4 For the present invention Figure 3 Schematic diagram of the local structure.

[0021] Figure 5 Schematic diagram of the internal structure of the central tube in the present invention.

[0022] Among them: 1. base plate; 2. first solenoid valve; 3. waste water pipe; 4. waste discharge pipe; 5. tower body; 6. water storage tank; 7. condenser; 8. second solenoid valve; 9. return pipe; 10. waste water tank; 11. connecting pipe; 12. gas-liquid separator; 13. first motor; 14. exhaust pipe; 15. vacuum pump; 16. steam outlet; 17. waterproof motor; 18. fixing frame; 19. scraper rod; 20. center tube; 21. water nozzle; 22. stirring blade; 23. bottom tube; 24. screw conveying rod; 25. drive shaft; 26. axial flow blade; 27. shaft frame; 28. heater; 29. ​​bottom connecting pipe; 30. pressure sensor; 31. third solenoid valve. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 5 In an embodiment of the present invention, a high-efficiency concentration tower for zero discharge of wastewater includes a base plate 1, a tower body 5 is installed on the upper end surface of the base plate 1, a wastewater input component is provided on one side of the tower body 5, and the wastewater input component includes a wastewater pipe 3, the wastewater pipe 3 is fixedly connected to one side of the lower end of the tower body 5, the wastewater pipe 3 is communicated with the interior of the tower body 5, and a first solenoid valve 2 is installed on the wastewater pipe 3; the wastewater pipe 3 can be used to connect the wastewater pipeline to discharge the wastewater into the interior of the tower body 5, and the first solenoid valve 2 is used to control the on-off of the wastewater pipe 3 to achieve the entry and shutoff of wastewater.

[0025] The lower end inner wall of the tower body 5 is embedded with a heater 28, and the lower end of the tower body 5 is provided with a waste discharge assembly for discharging concentrated wastewater, and the waste discharge assembly includes a bottom cylinder 23, and the bottom cylinder 23 is fixedly connected to the middle of the lower end of the tower body 5. The bottom cylinder 23 is communicated with the interior of the tower body 5, and the lower end of the bottom cylinder 23 is installed with a first motor 13, and the output end of the first motor 13 is connected to a spiral conveying rod 24, and the upper end of the spiral conveying rod 24 is fixedly connected to a plurality of scraping rods 19, and the lower end of the scraping rod 19 is connected to the lower end surface of the tower body 5. Contact and slide, one side of the lower end of the drive shaft 25 is fixedly connected to the waste pipe 4 connected to the bottom cylinder 23, and the third solenoid valve 31 is installed on the waste pipe 4. When the concentrated waste water needs to be discharged, the first motor 13 drives the spiral conveying rod 24 to rotate, and the spiral conveying rod 24 rotates to discharge the waste water and its concentrated impurities, ensuring the smoothness of waste discharge and preventing blockage problems. At the same time, the scraper rod 19 can rotate with the spiral conveying rod 24 to scrape the bottom of the tower body 5 to prevent impurities from hanging on the wall.

[0026] The interior of the tower body 5 is also provided with a water-drum assembly for causing wastewater to tumble inside the tower body 5, and the water-drum assembly includes a central tube 20, which is provided in the middle of the bottom of the tower body 5, and the upper end and the middle of the central tube 20 are fixedly connected with a fixing frame 18, and the two ends of the fixing frame 18 are respectively fixedly connected to the inner wall of the tower body 5, and the upper end of the central tube 20 is provided with a plurality of water spray ports 21, and the plurality of water spray ports 21 are evenly distributed, and a pumping assembly for pumping water is provided in the central tube 20; the pumping assembly includes a waterproof motor 17, which is fixedly connected to the upper end of the central tube 20, and the output end of the waterproof motor 17 is fixedly connected to the drive shaft 25, and the central tube 20 The lower end is fixedly connected to a shaft frame 27, and the drive shaft 25 is rotatably connected to the shaft frame 27. The position where the lower end of the drive shaft 25 passes through the shaft frame 27 is fixedly connected to an axial flow blade 26, and the position where the lower end of the drive shaft 25 passes through the waterproof motor 17 is also fixedly connected to a stirring blade 22. During operation, the waterproof motor 17 drives the drive shaft 25 to rotate, and the rotation of the drive shaft 25 drives the axial flow blade 26 to rotate. The rotation of the axial flow blade 26 transports the wastewater along the central tube 20 and sprays it out from the water outlet 21. At the same time, the stirring blade 22 can make the wastewater roll continuously, so that the wastewater is always in a state of motion, which can not only effectively improve the uniformity of the heating of the wastewater, but also prevent the wastewater from precipitating and forming a sediment layer covering the heating position.

[0027] A steam outlet 16 is provided on one side of the upper end of the tower body 5, a gas-liquid separator 12 is provided on the upper end of one side of the tower body 5, the gas-liquid separator 12 input port is communicated with the steam outlet 16, a water collecting component is provided at the lower end of the gas-liquid separator 12, and the water collecting component includes a wastewater tank 10, the wastewater tank 10 is provided on one side of the tower body 5 below the gas-liquid separator 12, both sides of the wastewater tank 10 are fixedly connected with fixed arms, the fixed arms are fixedly connected to the tower body 5, the upper end of the wastewater tank 10 is provided with a connecting pipe, the connecting pipe is connected to the drainage end of the gas-liquid separator 12 Then, the lower end of the wastewater tank 10 is connected to a return pipe 9, the lower end of the return pipe 9 is communicated with the tower body 5, and a second solenoid valve 8 is provided on the return pipe 9; during operation, the liquid separated by the gas-liquid separator 12 will enter the wastewater tank 10. At this time, the liquid is mixed with steam and cannot be discharged directly. The wastewater mixed with steam can be removed by the gas-liquid separator 12 to ensure the cleanliness of subsequent steam discharge. The second solenoid valve 8 can be opened when needed to discharge the collected wastewater back into the tower body 5, thereby ensuring zero discharge of wastewater.

[0028] The gas outlet end of the gas-liquid separator 12 is connected to a connecting pipe 11, and the lower end of the connecting pipe 11 is connected to a condenser 7. The water outlet end of the condenser 7 is provided with a water storage assembly, and the water storage assembly includes a water storage tank 6, and the water storage tank 6 is fixedly connected to a position on one side of the upper end surface of the base plate 1. The upper end of the water storage tank 6 is provided with a water inlet, and the water inlet is connected to the drainage end of the condenser 7. The lower end of the water storage tank 6 is provided with a drainage assembly for discharging the stored water; the drainage assembly includes a clean water pipe, and the clean water pipe is provided at the lower end of the water storage tank 6. The clean water pipe is connected to the inside of the water storage tank 6, and a drain valve is provided on the clean water pipe. The water liquefied by the condenser 7 can be collected through the set water storage tank 6 and stored in the water storage tank 6. Since the water in the water storage tank 6 is liquefied from pure steam, the liquefied water does not need to be processed again and can be used directly later. The set clean water pipe and drain valve can facilitate the discharge of the water collected in the water storage tank 6.

[0029] A vacuum pump 15 is installed on one side of the bottom substrate 1, and the exhaust end of the vacuum pump 15 is connected to the exhaust pipe 14, and the suction end of the vacuum pump 15 is connected to the bottom connecting pipe 29, and the bottom connecting pipe 29 is connected to the exhaust port of the condenser 7; a shielding cover is provided above the exhaust pipe 14, and a plurality of support rods are fixedly connected to the lower end of the shielding cover, and the lower end of the support rod is fixedly connected to the upper end of the exhaust pipe 14; a pressure sensor 30 for detecting the air pressure inside the tower body 5 is provided on the tower body 5, and a controller is also provided on the bottom substrate 1. The air pump 15, the first motor 13, the first solenoid valve 2, the third solenoid valve 31, and the second solenoid valve 8 are all electrically connected to the controller; the pressure sensor 30 is set to monitor the pressure inside the tower body 5 in real time during operation, and at the same time, cooperate with the vacuum pump 15 to pump the inside of the tower body 5 to a negative pressure state, which can effectively reduce the boiling point of the wastewater and improve the concentration efficiency. During operation, the pressure sensor 30 detects the air pressure inside the tower body 5. When the pressure does not reach the set negative pressure value, the vacuum pump 15 starts to pump out the negative pressure, thereby maintaining the negative pressure state inside the tower body 5.

[0030] The working principle of the present invention is as follows: during operation, wastewater to be concentrated is introduced into the tower body 5 through the wastewater pipe 3. When concentrated, the heater 28 is started to heat and accelerate the evaporation of the wastewater. At the same time, the waterproof motor 17 drives the drive shaft 25 to rotate, and the rotation of the drive shaft 25 drives the axial flow blades 26 to rotate. The axial flow blades 26 rotate to transport the wastewater along the central tube 20 and spray it out from the water nozzle 21. At the same time, the stirring blades 22 can make the wastewater roll continuously, so that the wastewater is always in a state of motion, thereby improving the uniformity of the wastewater heating. At the same time, the vacuum pump 15 is started to Negative pressure is pumped out, and the generated steam passes through the gas-liquid separator 12 and the condenser 7 in sequence along the pipeline. The wastewater mixed in the steam is separated when passing through the gas-liquid separator 12, and then the pure steam is liquefied through the condenser 7, and the liquefied water is collected through the water storage tank 6. When the concentrated wastewater needs to be discharged, the spiral conveying rod 24 is driven to rotate by the first motor 13. The spiral conveying rod 24 rotates to discharge the wastewater and its concentrated impurities, ensuring the smoothness of waste discharge and preventing blockage problems. At the same time, the scraper rod 19 can rotate with the spiral conveying rod 24 to scrape the bottom of the tower body 5 to prevent impurities from hanging on the wall.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Although this specification describes the embodiments, not every embodiment contains only one technical solution. This description is for clarity only. Those skilled in the art should read the specification as a whole. The technical solutions in the various embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency concentration tower for zero wastewater discharge, comprising a bottom plate, characterized in that: A tower body is installed on the upper end surface of the bottom substrate, and a wastewater input component is provided on one side of the tower body. A heater is embedded in the inner wall of the lower end of the tower body, and a waste discharge component for discharging concentrated wastewater is provided at the lower end of the tower body. A water drum component for causing the wastewater to tumble inside the tower body is also provided inside the tower body. A steam outlet is provided on one side of the upper end of the tower body, and a gas-liquid separator is provided on the upper end of one side of the tower body. The gas-liquid separator input port is connected to the steam outlet, and a water collecting component is provided at the lower end of the gas-liquid separator. The gas outlet end of the gas-liquid separator is connected to a connecting pipe, and the lower end of the connecting pipe is connected to a condenser. The water outlet end of the condenser is provided with a water storage component. A vacuum pump is installed on one side of the bottom substrate, and the exhaust end of the vacuum pump is connected to an exhaust pipe. The suction end of the vacuum pump is connected to a bottom connecting pipe, and the bottom connecting pipe is connected to the exhaust port of the condenser.

2. The high-efficiency concentration tower for zero wastewater discharge according to claim 1, characterized in that: The wastewater input assembly includes a wastewater pipe, which is fixedly connected to one side of the lower end of the tower body and communicates with the interior of the tower body. A first solenoid valve is installed on the wastewater pipe.

3. The high-efficiency concentration tower for zero wastewater discharge according to claim 2, characterized in that: The waste discharge assembly includes a bottom cylinder, which is fixedly connected to the middle of the lower end of the tower body and is communicated with the interior of the tower body. A first motor is installed at the lower end of the bottom cylinder, and a spiral conveying rod is connected to the output end of the first motor. A plurality of scraping rods are fixedly connected to the upper end of the spiral conveying rod, and the lower ends of the scraping rods contact and slide with the lower end surface of the tower body. A waste discharge pipe communicated with the bottom cylinder is fixedly connected to one side of the lower end of the drive shaft, and a third solenoid valve is installed on the waste discharge pipe.

4. The high-efficiency concentration tower for zero wastewater discharge according to claim 3, characterized in that: The water-drum assembly includes a central tube, which is arranged in the middle of the bottom of the tower body. The upper end and the middle of the central tube are fixedly connected to a fixing frame, and the two ends of the fixing frame are respectively fixedly connected to the inner wall of the tower body. The upper end of the central tube is provided with a plurality of water spray outlets, and the plurality of water spray outlets are evenly distributed. A pumping assembly for pumping water is provided in the central tube.

5. The high-efficiency concentration tower for zero wastewater discharge according to claim 4, characterized in that: The pumping assembly includes a waterproof motor, which is fixedly connected to the upper end of the central tube. The output end of the waterproof motor is fixedly connected to a drive shaft. The lower end of the central tube is fixedly connected to a shaft frame. The drive shaft is rotatably connected to the shaft frame. The position where the lower end of the drive shaft passes through the shaft frame is fixedly connected to an axial flow blade. The position where the lower end of the drive shaft passes through the waterproof motor is also fixedly connected to a stirring blade.

6. The high-efficiency concentration tower for zero wastewater discharge according to claim 3, characterized in that: The water collection assembly includes a wastewater tank, which is arranged on one side of the tower body and below the gas-liquid separator. Fixed arms are fixedly connected to both sides of the wastewater tank, and the fixed arms are fixedly connected to the tower body. A connecting pipe is provided at the upper end of the wastewater tank, and the connecting pipe is connected to the drainage end of the gas-liquid separator. A return pipe is connected to the lower end of the wastewater tank, and the lower end of the return pipe is communicated with the tower body. A second solenoid valve is provided on the return pipe.

7. The high-efficiency concentration tower for zero wastewater discharge according to claim 1, characterized in that: The water storage assembly includes a water tank, which is fixedly connected to a position on one side of the upper end surface of the base plate. A water inlet is provided at the upper end of the water tank, which is connected to the drainage end of the condenser. A drainage assembly is provided at the lower end of the water tank for discharging the stored water.

8. The high-efficiency concentration tower for zero wastewater discharge according to claim 7, characterized in that: The drainage assembly includes a clean water pipe, which is arranged at the lower end of the water storage tank. The clean water pipe is connected to the inside of the water storage tank and is provided with a drainage valve.

9. The high-efficiency concentration tower for zero wastewater discharge according to claim 1, characterized in that: A shielding cover is provided above the exhaust pipe, and a plurality of support rods are fixedly connected to the lower end of the shielding cover, and the lower ends of the support rods are fixedly connected to the upper end of the exhaust pipe.

10. The high-efficiency concentration tower for zero wastewater discharge according to claim 6, characterized in that: The tower body is provided with a pressure sensor for detecting the air pressure inside the tower body, and the bottom substrate is also provided with a controller. The pressure sensor, vacuum pump, first motor, first solenoid valve, third solenoid valve, and second solenoid valve are all electrically connected to the controller.

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