A low-temperature wastewater evaporation device

Abstract

This invention provides a low-temperature wastewater evaporation device, belonging to the field of wastewater evaporation treatment technology. It includes an evaporator tank with a stirring rod inside, a wastewater reflux assembly on the tank, and an evaporation tube assembly positioned outside the stirring rod on the inner wall of the tank. The evaporation tube assembly includes an upper annular tube and a lower annular tube, with multiple flow pipes between them. A reflux pipe connected to the upper annular tube is located at the top of the evaporator tank, and an outlet pipe extending out of the evaporator tank is located on the side wall of the lower annular tube. This invention utilizes the waste heat energy in water vapor to heat wastewater through the evaporation tube assembly, effectively improving the heat energy utilization rate of water vapor and reducing overall costs. Through the combined action of the stirring rod and the wastewater reflux assembly, precipitated crystals can be broken up to prevent unevaporated wastewater from being trapped inside the crystals. This allows the bottom layer of wastewater to be transported to the upper layer, ensuring uniform evaporation of the wastewater and significantly improving the evaporation effect.

Description

Technical Field

[0001] This utility model provides a low-temperature evaporation device for wastewater, belonging to the field of wastewater evaporation treatment technology. Background Technology

[0002] With social development and progress, water pollution is becoming increasingly serious, and environmental standards for water discharge are becoming increasingly stringent in various regions. In the field of wastewater treatment, evaporation devices are used to concentrate wastewater. Evaporation technology is typically employed, which separates the solvent from the solute by controlling the vaporization of water on its surface or inside under certain temperature and pressure.

[0003] Existing evaporation devices can basically meet the needs of wastewater treatment. However, when evaporating wastewater, the water vapor with a certain amount of heat is directly passed into the condensation unit for condensation due to the use of heating evaporation. This results in a significant waste of the residual heat energy in the water vapor, and the overall cost of wastewater evaporation treatment needs to be improved. Furthermore, after the wastewater evaporates to a certain extent, it will become saturated and crystallize. When a certain amount of unevaporated wastewater is trapped in the crystals, it will prevent the bottom wastewater from evaporating effectively, resulting in a less than ideal evaporation effect.

[0004] Based on this, the present invention provides a low-temperature evaporation device for wastewater. Utility Model Content

[0005] The technical problem solved by this utility model is that: water vapor with a certain amount of heat is directly introduced into the condensation component for condensation, which is a great waste of the residual heat energy in the water vapor and the overall cost needs to be improved; when the saturated crystals are easily coated with a certain amount of unevaporated wastewater, the bottom wastewater cannot be effectively evaporated, resulting in a less than ideal evaporation effect.

[0006] To solve the technical problem, the present invention provides the following technical solution: a low-temperature wastewater evaporation device, comprising an evaporation tank, a stirring rod inside the evaporation tank, a wastewater reflux assembly on the evaporation tank, an evaporation tube assembly located outside the stirring rod on the inner side wall of the evaporation tank, the evaporation tube assembly comprising an upper annular tube and a lower annular tube, a plurality of flow pipes between the upper annular tube and the lower annular tube, a reflux pipe connected to the upper annular tube at the top of the evaporation tank, and an outlet pipe extending out of the evaporation tank on the side wall of the lower annular tube; a condenser connected to the outlet pipe is installed on the outer side wall of the evaporation tank, and a drain pipe is provided at the outlet of the condenser.

[0007] Furthermore, a motor is provided at the top of the evaporator, and the output end of the motor is inserted into the evaporator and fixedly connected to the top of the stirring rod. Stirring blades are provided at equal intervals on the stirring rod and placed inside the evaporator tube assembly.

[0008] Furthermore, the wastewater recirculation assembly includes a pump installed on the lower outer wall of the evaporator, a pumping pipe inserted into the evaporator is provided on one side wall of the pump, and a recirculation pipe inserted into the top of the evaporator is provided on the top of the pump.

[0009] Furthermore, the evaporator is provided with a feed inlet at the top and a discharge outlet at the bottom, and both the feed inlet and the discharge outlet are equipped with control valves.

[0010] Furthermore, a heating tube is provided on the inner bottom wall of the evaporator.

[0011] Furthermore, a temperature sensor is installed on the top wall of the evaporator.

[0012] Furthermore, an observation window is provided on the outer wall of the evaporator.

[0013] Furthermore, the evaporator is equipped with a controller, which is electrically connected to the temperature sensor, heating tube, condenser, motor, pump, and control valve. The connection method and structure of the controller with the temperature sensor, heating tube, condenser, motor, pump, and control valve can be obtained based on basic circuit principles and are conventional technical means in this field. The internal circuit structure will not be described in detail here.

[0014] The beneficial effects of this utility model are:

[0015] 1. Through the evaporator tube assembly, the heat in the water vapor continues to heat the wastewater in the evaporator tank through the upper ring tube, multiple flow tubes, and the lower ring tube. Compared with the traditional method of directly passing water vapor into the condenser assembly for condensation, this method can effectively improve the utilization rate of heat energy in water vapor and reduce overall costs.

[0016] 2. The stirring rod can stir the wastewater and break up the precipitated crystals to prevent a certain amount of unevaporated wastewater from being trapped inside the crystals, thereby improving the evaporation effect. Through the wastewater return component, the wastewater in the lower layer of the evaporator is transported to the return pipe two through the suction pipe and the pump, and then transported to the upper layer of the evaporator from the return pipe two, so that the wastewater in the upper and lower layers evaporates evenly, thereby greatly improving the evaporation effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a low-temperature wastewater evaporation device according to the present invention. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of a low-temperature wastewater evaporation device according to the present invention. Figure 2 .

[0019] Figure 3 This is a plan view of a low-temperature evaporation device for wastewater according to the present invention.

[0020] Figure 4 This is a schematic diagram of the evaporation tube assembly structure of a low-temperature wastewater evaporation device according to the present invention.

[0021] 1. Evaporator; 2. Stirring rod; 3. Wastewater reflux assembly; 4. Evaporation tube assembly; 5. Upper annular pipe; 6. Lower annular pipe; 7. Flow pipe; 8. Reflux pipe one; 9. Gas outlet pipe; 10. Condenser; 11. Motor; 12. Stirring blade; 13. Pump; 14. Pump pipe; 15. Reflux pipe two; 16. Feed inlet; 17. Discharge outlet; 18. Control valve; 19. Heating tube; 20. Temperature sensor; 21. Observation window. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] According to the appendix Figure 1 , 2 As shown in Figures 3 and 4: This utility model provides a low-temperature wastewater evaporation device, including an evaporator 1, a stirring rod 2 inside the evaporator 1, a wastewater reflux assembly 3 on the evaporator 1, an evaporation tube assembly 4 on the inner wall of the evaporator 1 placed outside the stirring rod 2, the evaporation tube assembly 4 including an upper annular tube 5 and a lower annular tube 6, a plurality of flow pipes 7 between the upper annular tube 5 and the lower annular tube 6, a reflux pipe 8 connected to the upper annular tube 5 at the top of the evaporator 1, and an outlet pipe 9 extending out of the evaporator 1 on the side wall of the lower annular tube 6; a condenser 10 connected to the outlet pipe 9 is installed on the outer wall of the evaporator 1, and a drain pipe is provided at the outlet of the condenser 10.

[0024] According to the appendix Figure 1 , 3 As shown: The top of the evaporator 1 is equipped with a motor 11. The output end of the motor 11 is inserted into the evaporator 1 and fixedly connected to the top of the stirring rod 2. The stirring rod 2 is provided with stirring blades 12 placed inside the evaporation tube assembly 4 at equal intervals. By starting the motor 11, the stirring rod 2 is driven to rotate, which in turn drives the stirring blades 12 to rotate, thereby stirring the wastewater and breaking up the precipitated crystals to prevent a certain amount of unevaporated wastewater from being trapped inside the crystals, thus improving the evaporation effect.

[0025] According to the appendix Figure 2 , 3 As shown: The wastewater recirculation assembly 3 includes a pump 13 installed on the lower outer wall of the evaporator 1. A suction pipe 14 is provided on one side wall of the pump 13 and inserted into the evaporator 1. A recirculation pipe 15 is provided on the top of the pump 13 and inserted into the top of the evaporator 1. By starting the pump 13, the wastewater in the lower layer of the evaporator 1 is transported through the suction pipe 14 and the pump 13 to the recirculation pipe 15. Then, it is transported from the recirculation pipe 15 to the upper layer of the evaporator 1, so that the wastewater in the upper and lower layers evaporates evenly and the evaporation effect is improved.

[0026] According to the appendix Figure 1As shown: The top of the evaporator 1 is provided with a feed inlet 16 and the bottom of the evaporator 1 is provided with a discharge outlet 17. Both the feed inlet 16 and the discharge outlet 17 are provided with control valves 18.

[0027] According to the appendix Figure 3 As shown: The bottom inner wall of the evaporator 1 is equipped with a heating tube 19, which serves to heat the water. The controller can set the heating intensity of the heating tube 19. When the temperature signal inside the evaporator 1 detected by the temperature sensor reaches the preset temperature, the set temperature is 30-60℃ low temperature, so as to carry out low-temperature evaporation of wastewater.

[0028] According to the appendix Figure 3 As shown: A temperature sensor 20 is installed on the top wall of the evaporator 1, and the display screen on the controller can display the received temperature sensor signal in numerical form.

[0029] According to the appendix Figure 1 As shown: An observation window 21 is provided on the outer wall of the evaporator 1.

[0030] The principle of this utility model

[0031] In use, wastewater to be evaporated is added to evaporator 1, and the heating element is activated to heat the wastewater inside. When the temperature reaches the set low-temperature evaporation temperature, the water vapor containing a certain amount of heat rising from the wastewater is transported to return pipe 8, and then flows through upper annular pipe 5, multiple flow pipes 7, and lower annular pipe 6 in sequence, finally flowing into air cooler 10 for condensation. The condensed liquid is discharged through drain pipe. The heat in the water vapor continues to heat the wastewater in evaporator 1 through upper annular pipe 5, multiple flow pipes 7, and lower annular pipe 6. Compared with the traditional method of directly passing water vapor into the condensation component for condensation, this method can effectively improve the utilization rate of heat energy in water vapor and reduce overall costs.

[0032] When evaporating wastewater, the motor 11 is started to drive the stirring rod 2 to rotate, which in turn drives the stirring blade 12 to rotate, thereby stirring the wastewater and breaking up the precipitated crystals. This prevents a certain amount of unevaporated wastewater from being trapped inside the crystals, thus improving the evaporation effect. The pump 13 is started to transport the wastewater from the lower layer of the evaporator 1 through the pump pipe 14 to the return pipe 15, and then from the return pipe 15 to the upper layer of the evaporator 1, so that the wastewater in the upper and lower layers evaporates evenly, thereby greatly improving the evaporation effect.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A low-temperature evaporation device for wastewater, comprising an evaporation tank (1), characterized in that: The evaporator (1) is equipped with a stirring rod (2), and the evaporator (1) is equipped with a wastewater reflux assembly (3). The inner side wall of the evaporator (1) is equipped with an evaporation tube assembly (4) placed outside the stirring rod (2). The evaporation tube assembly (4) includes an upper annular tube (5) and a lower annular tube (6). Multiple flow pipes (7) are provided between the upper annular tube (5) and the lower annular tube (6). The top of the evaporator (1) is equipped with a reflux pipe (8) connected to the upper annular tube (5). The side wall of the lower annular tube (6) is equipped with an outlet pipe (9) that passes through the evaporator (1). The outer side wall of the evaporator (1) is equipped with a condenser (10) connected to the outlet pipe (9). The outlet of the condenser (10) is equipped with a drain pipe.

2. The wastewater low-temperature evaporation device according to claim 1, characterized in that: The top of the evaporator (1) is equipped with a motor (11). The output end of the motor (11) is inserted into the evaporator (1) and fixedly connected to the top of the stirring rod (2). The stirring rod (2) is provided with stirring blades (12) placed inside the evaporator tube assembly (4) at equal intervals.

3. The wastewater low-temperature evaporation device according to claim 1, characterized in that: The wastewater return assembly (3) includes a pump (13) installed on the lower outer wall of the evaporator (1). The pump (13) has a pump pipe (14) inserted into the evaporator (1) on one side wall, and a return pipe (15) inserted into the top of the evaporator (1) on the top of the pump (13).

4. The wastewater low-temperature evaporation device according to claim 1, characterized in that: The evaporator (1) has a feed inlet (16) at the top and a discharge outlet (17) at the bottom. Both the feed inlet (16) and the discharge outlet (17) are equipped with control valves (18).

5. The wastewater low-temperature evaporation device according to claim 1, characterized in that: The bottom inner wall of the evaporator (1) is provided with a heating tube (19).

6. The wastewater low-temperature evaporation device according to claim 1, characterized in that: A temperature sensor (20) is provided on the top wall of the evaporator (1).

7. The wastewater low-temperature evaporation device according to claim 1, characterized in that: An observation window (21) is provided on the outer wall of the evaporator (1).

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