Multi-effect evaporation wastewater treatment device

Abstract

The utility model discloses a multi-effect evaporation wastewater treatment device, and relates to the technical field of wastewater treatment. The device comprises a filter box, a purification box and a gas-liquid separator, a heat exchange and heat preservation assembly is clamped and fixed to the peripheral surface of the filter box, the purification box is arranged on one side of the filter box, a heating furnace is clamped and fixed to the peripheral surface of the purification box, a high-pressure pump penetrates through the top of the peripheral surface of the heating furnace in a clamped mode, and a ventilation pipe penetrates through the top of the high-pressure pump in a clamped mode; a plurality of gas spraying pipes penetrate through and are clamped to the other end of the ventilation pipe; and a gas-liquid separator is arranged on one side of the purification box. By arranging the filter box, the purification box and the gas-liquid separator, the problems that a multi-effect evaporator improves the evaporation efficiency of waste water by heating the waste water, the needed heating time is long and the treatment efficiency is low when a large amount of waste water is heated, and a plurality of pipelines need to be used for transporting high-temperature air when the waste water is heated for multiple times, so that the waste water is wasted are solved. And part of heat is lost in the transportation process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wastewater treatment technical field, especially, relate to a kind of treatment device of multi-effect evaporation wastewater. BACKGROUND

[0002] Wastewater treatment is to treat wastewater by physical, chemical and biological methods, purify wastewater and reduce pollution to achieve wastewater recycling and reuse, fully utilize water resources. Wastewater is mainly divided into domestic wastewater and industrial wastewater. Wastewater treatment is widely used in construction, agriculture, transportation, energy, petrochemical industry, environmental protection, urban landscape, medical treatment, catering and other fields. During the treatment of wastewater, especially during the treatment of industrial wastewater, wastewater evaporator is usually used to treat wastewater. It can treat high-salinity and high-concentration organic wastewater in chemical industry by multi-effect evaporation under reduced pressure. After separating the salt in the concentrated liquid, it is recycled through a salt collector. The concentrated liquid is dried and recycled or incinerated. The condensed water after evaporation is treated by subsequent biochemical treatment to meet the wastewater discharge standard. However, it still has the following problems in actual use:

[0003] The utility model with publication number CN213739042U discloses a multi-effect evaporation wastewater treatment device. A separation hopper is arranged in the first outer frame. A drain pipe is vertically arranged in the separation hopper. An electromagnetic valve is arranged on the drain pipe. A reagent tank is arranged on the side wall of the first outer frame. The discharge pipe of the reagent tank penetrates into the upper part of the inner cavity of the first outer frame. The evaporator usually heats the wastewater container to further heat the wastewater to improve the evaporation speed of the wastewater. However, during actual use, the amount of wastewater generated during industrial production is large. It is difficult to evaporate a large amount of wastewater quickly by heating alone, which leads to a long evaporation time and low wastewater treatment efficiency.

[0004] Although the multi-effect evaporator can heat the wastewater multiple times to improve the evaporation efficiency of the wastewater, it needs to transport high-temperature air through multiple pipelines, which leads to the loss of part of the heat during transportation and makes it difficult to fully utilize the heat. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a treatment device for multi-effect evaporation of wastewater. Through the filter box, purification tank and gas-liquid separator, the problem of long heating time and low treatment efficiency of a large amount of wastewater during heating is solved. In addition, the problem of heat loss during transportation of high-temperature air through multiple pipelines is solved.

[0006] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a kind of multi-effect evaporation wastewater treatment devices, including filter box, purification tank and gas-liquid separator, the filter box outer circumferential surface is clamped and fixed with heat exchange insulation component, first connecting pipe is penetrated and welded in the outer circumferential surface bottom of heat exchange insulation component, the top of first connecting pipe is penetrated and clamped in the outer circumferential surface top of filter box, the filter box one side is provided with purification tank, heating furnace is clamped and fixed with in the outer circumferential surface of purification tank, high-pressure pump is penetrated and clamped in the outer circumferential surface top of heating furnace, air pipe is penetrated and clamped in the top of high-pressure pump, multiple air injection pipes are penetrated and clamped in the other end of air pipe, gas-liquid separator is provided on the side of purification tank;

[0008] After sewage is poured into filter box, solid particles in sewage are filtered by first filter screen in filter box, and filtered sewage is pumped into purification tank by liquid pump, and flocculating agent required for flocculation and precipitation is poured, and when wastewater is flocculated and precipitated, purification tank is heated by heating furnace, wastewater is further heated, evaporation speed of wastewater is improved, air entering heating furnace is heated, air in heating furnace is pumped into air injection pipe by high-pressure pump, and high-temperature air is sprayed into wastewater in purification tank by air injection pipe, wastewater is further heated, high-temperature air does not need to be transported for a long distance, heating speed of wastewater is improved, temperature of air discharged is reduced, temperature difference between high-temperature air and external air is large, air loses heat quickly in transportation process, contact area of air and wastewater is improved, evaporation speed of wastewater is further improved, and wastewater evaporated enters gas-liquid separator with airflow, water in air is separated by gas-liquid separator, relatively dry air is filtered into filter box, wastewater in filter box is preliminarily preheated, and after air preheats wastewater in filter box, residual heat in air is absorbed by cold water in heat exchange insulation component through first connecting pipe, heat loss is further avoided.

[0009] Further, water inlet pipe is penetrated and welded in the outer circumferential surface top of heat exchange insulation component, water outlet pipe is penetrated and clamped in the outer circumferential surface bottom of heat exchange insulation component, exhaust pipe is penetrated and clamped in the top of heat exchange insulation component, semiconductor refrigeration assembly is penetrated and clamped in the outer circumferential surface of exhaust pipe;

[0010] The air containing waste heat separated by the gas-liquid separator preheats the wastewater in the filter box after entering the filter box, and the filter box can be heat-insulated by the water pumped into the heat exchange and heat preservation assembly, so as to avoid heat loss in the environment through the filter box shell. After the air preheats the wastewater in the filter box, the air enters the heat exchange and heat preservation assembly through the first connecting pipe, so that the residual heat in the air is absorbed by the cold water in the heat exchange and heat preservation assembly, further avoiding heat loss. When the cooled air enters the exhaust pipe, the air is cooled by the semiconductor refrigeration assembly, so that the moisture in the air is condensed and flows back to the heat exchange and heat preservation assembly, avoiding moisture loss.

[0011] Further, the first sealing cover is fixed on the top of the filter box, the stirring motor is fixed on the top of the first sealing cover, the stirring rod is fixed on the bottom of the stirring motor, the scraper is fixed on the outer circumferential surface of the stirring rod, the stirring rod penetrates through the top of the first sealing cover, the sewage pipe is welded on the top of the first sealing cover, the first filter screen is fixed on the inner bottom of the filter box, the sewage pipe and the blowdown pipe are in communication with the first filter screen, and the scraper is attached to the inner wall of the first filter screen.

[0012] After the wastewater is poured into the filter box, the solid particles in the wastewater can be filtered through the first filter screen. The rotation of the stirring rod and the scraper driven by the stirring motor can scrape off the particles blocked in the inner wall of the first filter screen, ensuring the filtering efficiency of the first filter screen.

[0013] Further, the air inlet pipe is welded on the bottom of the outer circumferential surface of the heating furnace, the flow buffer frame is fixed on the inner wall of the heating furnace, one side of the flow buffer frame is attached to the outer circumferential surface of the purification box, the water inlet pipe is penetrated and clamped on the top of the outer circumferential surface of the purification box, the dosing pipe is penetrated and clamped on the outer circumferential surface of the water inlet pipe, the liquid pump is penetrated and clamped on the other end of the water inlet pipe relative to the purification box, and one end of the liquid pump is penetrated and clamped on the bottom of the outer circumferential surface of the filter box.

[0014] The filtered wastewater in the filtering box can be pumped into the purification box through the liquid pump, and the wastewater passing through the water pipe can be dosed through the dosing pipe, so that the wastewater and the medicament are fully contacted, the heating furnace can heat the purification box through electric heating or fuel combustion, further heat the wastewater in the purification box, improve the evaporation speed of the wastewater, and at the same time, the air entering the heating furnace can be heated, the air is slowed down through the slow flow plate, the high-temperature air is fully contacted with the heating furnace, the air in the heating furnace is pumped into the air injection pipe through the high-pressure pump, and the high-temperature air is injected into the sewage in the purification box through the air injection pipe, further heating the sewage, without long-distance transportation of high-temperature air, improving the heating speed of the sewage, and reducing the temperature of the air discharged, avoiding large temperature difference between the high-temperature air and the external air, causing the air to lose heat quickly during transportation, and improving the contact area between the air and the sewage, further improving the evaporation speed of the sewage.

[0015] Further, the second sealing cover is clamped and fixed at the top of the purification tank, the lifting cylinder is clamped at the top of the second sealing cover, the telescopic pipe is slidably clamped at the bottom of the lifting cylinder, the second filter screen is clamped at the bottom of the telescopic pipe, the telescopic pipe penetrates and is connected to the top of the second sealing cover, and the outer circumferential surface of the second filter screen is attached to the inner wall of the purification tank.

[0016] The second filter screen can be driven to move up and down by the lifting cylinder, and after the wastewater is flocculated and precipitated for a certain period of time by the flocculating agent, the second filter screen is driven to move upwards, so that the precipitate is separated from the wastewater, and the precipitate is easily discharged and the remaining wastewater is easily further treated.

[0017] Further, the second connecting pipe and the third connecting pipe are respectively welded through the outer circumferential surface of the gas-liquid separator at both ends, the second drain pipe is welded through the bottom of the gas-liquid separator, the second connecting pipe is clamped through at the top of the second sealing cover relative to the other end of the gas-liquid separator, and the third connecting pipe is clamped through at the bottom of the outer circumferential surface of the filtering box relative to the other end of the gas-liquid separator.

[0018] The evaporated wastewater enters the gas-liquid separator with the airflow, the gas-liquid separator separates the water in the air, and the wastewater is collected at the bottom of the gas-liquid separator, the wastewater treated by evaporation is discharged by opening the second drain pipe at a certain time, and further treatment is facilitated.

[0019] The utility model has the following beneficial effects:

[0020] The utility model discloses a purifying box is set up, solved the evaporator often through the bearing container of waste water heating, further heating to waste water, to improve the evaporation speed of waste water, but in actual use, because industrial production often produces the waste water amount is larger, only through the mode of heating is difficult to make a large amount of waste water fast evaporation, lead to the time required for evaporation is long, and the problem of low waste water treatment efficiency, through heating furnace heating purifying box, further heating to waste water, improve the evaporation speed of waste water, heat the air in the heating furnace simultaneously, through high -pressure pump is extracted to the air of high temperature in heating furnace in the air pipe, and through the air pipe is spouted to the waste water in purifying box, make high -temperature air and waste water heat exchange, improve the heating speed of waste water, improve the contact area of air and waste water simultaneously, further improve the evaporation efficiency of waste water, guarantee the evaporation treatment efficiency of waste water of processing device.

[0021] The utility model discloses a filter box, purifying box and gas -liquid separator are set up, solved although multiple effect evaporator can heat handling to waste water for many times to improve the evaporation efficiency of waste water, but need to transport high -temperature air to many pipes, lead to high -temperature air loss part heat in the transportation process, difficultly utilize the problem of heat fully, through the large amount of heat of heating furnace is used to heat purifying box and waste water partially, and the part is pumped into waste water directly through high -pressure pump, and heat exchange with waste water, need not through long -distance transportation, and make high -temperature air fast cooling, avoid high -temperature air directly through pipeline delivery, and the temperature difference of high -temperature air and outside air is larger, lead to air heat loss faster in the transportation process, and the hot air after cooling enters the filter box through the gas -liquid separator, and the waste water in the filter box is heated, and then enters the heat exchange heat preservation component through the first connecting pipe, and the residual heat in the air is absorbed by the cold water in the heat exchange heat preservation component, further avoid the loss of heat. ACCURACY OF DRAWINGS

[0022] Figure 1 It is the structure effect drawing of the utility model;

[0023] Figure 2 It is the structure drawing of filter box and heat exchange heat preservation component of the utility model;

[0024] Figure 3 It is the sectional view of filter box of the utility model;

[0025] Figure 4 It is the structure drawing of purifying box and heating furnace of the utility model;

[0026] Figure 5 It is the sectional view of purifying box and heating furnace of the utility model;

[0027] Figure 6 It is the structure drawing of gas -liquid separator of the utility model.

[0028] REFERENCE NUMERALS:

[0029] 1, filter box; 101, heat exchange and heat preservation assembly; 102, first sealing cover; 103, stirring motor; 104, water inlet pipe; 105, water outlet pipe; 106, first connecting pipe; 107, exhaust pipe; 108, semiconductor refrigeration assembly; 109, sewage pipe; 110, blowdown pipe; 111, first filter screen; 112, stirring rod; 113, scraper; 2, purification tank; 201, heating furnace; 202, high-pressure pump; 203, second sealing cover; 204, lifting cylinder; 205, liquid pump; 206, water pipe; 207, dosing pipe; 208, first drain pipe; 209, air inlet pipe; 210, slow flow frame; 211, air pipe; 212, telescopic pipe; 213, second filter screen; 214, air jet pipe; 3, gas-liquid separator; 301, second connecting pipe; 302, third connecting pipe; 303, second drain pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0031] Please refer to Figures 1-6 The utility model discloses a kind of multi-effect evaporation wastewater treatment devices, including filter box 1, purification tank 2 and gas-liquid separator 3, heat exchange and heat preservation assembly 101 is clamped and fixed on the outer circumferential surface of filter box 1, first connecting pipe 106 is penetrated and welded on the outer circumferential surface bottom of heat exchange and heat preservation assembly 101, first connecting pipe 106 top is penetrated and clamped on the outer circumferential surface top of filter box 1, purification tank 2 is arranged on one side of filter box 1, heating furnace 201 is clamped and fixed on the outer circumferential surface of purification tank 2, high-pressure pump 202 is penetrated and clamped on the outer circumferential surface top of heating furnace 201, air pipe 211 is penetrated and clamped on the top of high-pressure pump 202, multiple air jet pipes 214 are penetrated and clamped on the other end of air pipe 211, gas-liquid separator 3 is arranged on one side of purification tank 2;

[0032] The sewage is poured into the filter box 1, and the solid particles in the sewage are filtered by the first filter screen 111 in the filter box 1. The filtered sewage is pumped into the purification box 2 by the liquid pump 205, and a flocculating agent is added to the wastewater through the dosing pipe 207, so that the wastewater and the flocculating agent are fully mixed. When the wastewater is flocculated and precipitated in the purification box 2, the purification box 2 is heated by the heating furnace 201, further heating the wastewater. At the same time, the high-pressure pump 202 is used to pump air into the heating furnace 201, so that the outside air is pumped into the heating furnace 201 and heated by the heating furnace 201. The high-temperature air is sprayed into the wastewater in the purification box 2 through the air injection pipe 214, and the heat exchange between the air and the wastewater is improved, the contact area between the air and the wastewater is increased, and the evaporation speed of the wastewater is further improved. The evaporated wastewater enters the gas-liquid separator 3 with the airflow, and the water in the air is separated by the gas-liquid separator 3. The relatively dry hot air is used to preheat the wastewater in the filter box 1, and the cooled air is discharged through the first connecting pipe 106 into the heat exchange and heat preservation assembly 101.

[0033] As shown in Figures 1-3 The outer peripheral surface of the heat exchange and heat preservation assembly 101 is penetrated by the water inlet pipe 104, the bottom of the outer peripheral surface of the heat exchange and heat preservation assembly 101 is penetrated by the water outlet pipe 105, the top of the heat exchange and heat preservation assembly 101 is penetrated by the air outlet pipe 107, the outer peripheral surface of the air outlet pipe 107 is penetrated by the semiconductor refrigeration assembly 108, the first sealing cover 102 is fixedly connected to the top of the filter box 1, the stirring motor 103 is fixedly connected to the top of the first sealing cover 102, the stirring rod 112 is connected to the bottom of the stirring motor 103, the scraper 113 is fixedly connected to the outer peripheral surface of the stirring rod 112, the stirring rod 112 is penetrated and inserted into the top of the first sealing cover 102, the sewage pipe 109 is penetrated and welded to the top of the first sealing cover 102, the first filter screen 111 is fixedly connected to the inner bottom of the filter box 1, the sewage pipe 109 and the sewage pipe 110 are penetrated and communicated with the first filter screen 111, and the scraper 113 is attached to the inner wall of the first filter screen 111 opposite to the other end of the stirring rod 112.

[0034] Cold water is pumped into the heat exchange and insulation component 101 through the inlet pipe 104, and a large amount of sewage is poured into the filter box 1 through the sewage pipe 109. The sewage is filtered through the first filter screen 111 to remove solid particles. The stirring motor 103 drives the stirring rod 112 and scraper 113 to rotate, scraping off the particles clogging the inner wall of the first filter screen 111. At the same time, the air containing residual heat separated by the gas-liquid separator 3 enters the filter box 1 and preheats the wastewater in the filter box 1. The air after exchanging heat with the wastewater enters the heat exchange and insulation component 101 through the first connecting pipe 106, so that the residual heat in the air is absorbed by the cold water in the heat exchange and insulation component 101. When the air is discharged through the exhaust pipe 107, it is cooled by the semiconductor refrigeration component 108, so that the moisture in the air condenses and flows back into the heat exchange and insulation component 101.

[0035] Among them, such as Figure 1 , 4 As shown in Figure 5, an air inlet pipe 209 is welded through the bottom of the outer periphery of the heating furnace 201. A flow-slowing frame 210 is welded and fixed to the inner wall of the heating furnace 201. One side of the flow-slowing frame 210 is attached to the outer periphery of the purification box 2. A water pipe 206 is inserted and snapped through the top of the outer periphery of the purification box 2. A dosing pipe 207 is inserted and snapped through the outer periphery of the water pipe 206. A liquid pump 205 is inserted and snapped through the other end of the water pipe 206 relative to the purification box 2. One end of the liquid pump 205 is inserted and snapped through the bottom of the outer periphery of the filter box 1. A second sealing cover 203 is snapped and fixed to the top of the purification box 2. A lifting cylinder 204 is snapped onto the top of the second sealing cover 203. A telescopic tube 212 is slidably snapped onto the bottom of the lifting cylinder 204. A second filter screen 213 is snapped onto the bottom of the telescopic tube 212. The telescopic tube 212 is inserted through and connected to the top of the second sealing cover 203. The outer peripheral surface of the second filter screen 213 is attached to the inner wall of the purification box 2. Multiple jet pipes 214 are inserted through and connected to the top of the second sealing cover 203 and the second filter screen 213. A first drain pipe 208 is welded through and connected to the bottom of the outer peripheral surface of the purification box 2. The first drain pipe 208 is snapped through and connected to the outer peripheral surface of the heating furnace 201.

[0036] The filtered wastewater in the filtering tank 1 is pumped into the purification tank 2 through the water pipe 206 by the liquid pump 205, and the wastewater passing through the water pipe 206 is dosed through the dosing pipe 207, so that the wastewater and the medicament are fully mixed. The heating furnace 201 heats the purification tank 2 by electric heating or fuel combustion, further heats the wastewater in the purification tank 2, improves the evaporation speed of the wastewater, and at the same time, the high-pressure pump 202 pumps air in the heating furnace 201, so that the outside air enters the heating furnace 201 through the air inlet pipe 209, and the air is heated by the heating furnace 201. The high-temperature air is pumped into the air injection pipe 214 through the air pipe 211, and the high-temperature air is sprayed into the wastewater in the purification tank 2 through the air injection pipe 214, further heats the wastewater, and at the same time, improves the contact area of the air and the wastewater. After the wastewater is flocculated and precipitated for a certain period of time by the flocculating agent, the lifting cylinder 204 drives the telescopic pipe 212 to extend and retract, drives the second filter screen 213 to move upwards, further drives the precipitate to separate from the wastewater, and facilitates the discharge of the precipitate. The remaining wastewater is discharged through the first drain pipe 208 and further treated.

[0037] As shown in Figure 1 , 6 , the second connecting pipe 301 and the third connecting pipe 302 are respectively penetrated and welded at both ends of the outer circumferential surface of the gas-liquid separator 3, the second drain pipe 303 is penetrated and welded at the bottom of the gas-liquid separator 3, the other end of the second connecting pipe 301 is penetrated and clamped on the top of the second sealing cover 203 relative to the gas-liquid separator 3, and the other end of the third connecting pipe 302 is penetrated and clamped on the bottom of the outer circumferential surface of the filtering tank 1 relative to the gas-liquid separator 3.

[0038] The air containing the evaporated wastewater enters the gas-liquid separator 3 through the second connecting pipe 301, the water in the air is separated by the gas-liquid separator 3, and the wastewater is collected at the bottom of the gas-liquid separator 3. The air containing the residual heat is pumped into the filtering tank 1 through the third connecting pipe 302, and the wastewater treated by evaporation is discharged by opening the second drain pipe 303 at a certain time.

[0039] The specific working principle of the utility model is: through the water inlet pipe 104, cold water is pumped into the heat exchange and heat preservation assembly 101, through the sewage pipe 109, a large amount of sewage is poured into the filter box 1, and the sewage is filtered and treated through the first filter screen 111, solid particles in the sewage are filtered out, through the liquid pump 205, the filtered wastewater in the filter box 1 is pumped into the purification box 2 through the water pipe 206, and the wastewater passing through the water pipe 206 is dosed through the dosing pipe 207, so that the wastewater and the medicament are fully mixed, the heating furnace 201 heats the purification box 2 and the wastewater, at the same time, the high-pressure pump 202 pumps air in the heating furnace 201, so that the outside air enters the heating furnace 201 through the air inlet pipe 209, and the air is heated through the heating furnace 201, the high-temperature air is pumped into the air injection pipe 214 through the air pipe 211, and the high-temperature air is sprayed into the sewage in the purification box 2 through the air injection pipe 214, so that the sewage is further heated, the air containing a large amount of evaporated wastewater enters the gas-liquid separator 3 through the second connecting pipe 301, the moisture in the air is separated through the gas-liquid separator 3, and the wastewater is collected at the bottom of the gas-liquid separator 3, then the air containing residual heat is pumped into the filter box 1 through the third connecting pipe 302, so that the wastewater in the filter box 1 is preheated, and the air after heat exchange with the wastewater enters the heat exchange and heat preservation assembly 101 through the first connecting pipe 106, so that the residual heat in the air is absorbed by the cold water in the heat exchange and heat preservation assembly 101, when the air is discharged through the air outlet pipe 107, the air is cooled through the semiconductor refrigeration assembly 108, so that the moisture in the air is condensed and flows back to the heat exchange and heat preservation assembly 101, the particles clogging the inner wall of the first filter screen 111 are scraped off through the rotation of the stirring rod 112 and the scraper 113 driven by the stirring motor 103, when the wastewater is flocculated and precipitated for a certain period of time through the flocculating medicament, the telescopic pipe 212 is driven to stretch and retract through the control of the lifting cylinder 204, the second filter screen 213 is driven to move upwards, so that the precipitate is further separated from the wastewater, the precipitate is conveniently discharged, at the same time, the second drain pipe 303 is opened at regular time to discharge the wastewater after evaporation treatment, the water outlet pipe 105 is opened at regular time to discharge the water heated to a certain temperature, after the wastewater evaporation treatment is completed, the first drain pipe 208 is opened to discharge the remaining wastewater and carry out further treatment, and the blowdown pipe 110 is opened to discharge the sludge.

[0040] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement of the technical scheme recorded in the foregoing embodiments, belongs to the protection scope of the utility model.

Claims

1. A multi-effect evaporation wastewater treatment device, comprising a filter tank (1), a purification tank (2) and a gas-liquid separator (3), characterized in that: The filter box (1) is clamped and fixed with a heat exchange and heat preservation assembly (101) on the outer periphery, a first connecting pipe (106) is welded through the bottom of the outer periphery of the heat exchange and heat preservation assembly (101), the top of the first connecting pipe (106) is clamped and connected to the top of the outer periphery of the filter box (1), a purification box (2) is arranged on one side of the filter box (1), a heating furnace (201) is clamped and fixed on the outer periphery of the purification box (2), a high-pressure pump (202) is clamped and connected through the top of the outer periphery of the heating furnace (201), an air pipe (211) is clamped and connected through the top of the high-pressure pump (202), a plurality of air injection pipes (214) are clamped and connected through the other end of the air pipe (211), and a gas-liquid separator (3) is arranged on one side of the purification box (2).

2. A multi-effect evaporation wastewater treatment apparatus according to claim 1, characterized in that: The top of the outer periphery of the heat exchange and heat preservation assembly (101) is welded through with a water inlet pipe (104), the bottom of the outer periphery of the heat exchange and heat preservation assembly (101) is clamped and connected through with a water outlet pipe (105), and the top of the heat exchange and heat preservation assembly (101) is clamped and connected through with an exhaust pipe (107). The outer periphery of the exhaust pipe (107) is clamped and connected through with a semiconductor refrigeration assembly (108).

3. A multi-effect evaporation wastewater treatment apparatus according to claim 1, characterized in that: The top of the filter box (1) is clamped and fixed with a first sealing cover (102), the top of the first sealing cover (102) is clamped and fixed with a stirring motor (103), the bottom of the stirring motor (103) is clamped with a stirring rod (112), the outer periphery of the stirring rod (112) is clamped and fixed with a scraper (113), the stirring rod (112) is inserted through the top of the first sealing cover (102), the top of the first sealing cover (102) is welded through with a sewage pipe (109), the inner bottom of the filter box (1) is clamped and fixed with a first filter screen (111), the bottom of the filter box (1) is welded through with a sewage discharge pipe (110), the sewage pipe (109) and the sewage discharge pipe (110) are in communication through the first filter screen (111), and the other end of the scraper (113) is attached to the inner wall of the first filter screen (111) relative to the stirring rod (112).

4. The multi-effect evaporation wastewater treatment device according to claim 1, characterized in that: The bottom of the outer periphery of the heating furnace (201) is welded through with an air inlet pipe (209), a flow slowing frame (210) is fixedly welded on the inner wall of the heating furnace (201), one side of the flow slowing frame (210) is attached to the outer periphery of the purification box (2), a water passing pipe (206) is clamped and connected through the top of the outer periphery of the purification box (2), a dosing pipe (207) is clamped and connected through the outer periphery of the water passing pipe (206), a liquid pump (205) is clamped and connected through the other end of the water passing pipe (206) relative to the purification box (2), and one end of the liquid pump (205) is clamped and connected to the bottom of the outer periphery of the filter box (1).

5. A multi-effect evaporation wastewater treatment apparatus according to claim 1, characterized in that: The purification tank (2) top clamping fixed has the second sealing cover (203), the second sealing cover (203) top clamping has the lifting cylinder (204), the lifting cylinder (204) bottom sliding clamping has the telescopic pipe (212), the telescopic pipe (212) bottom clamping has the second filter screen (213), the telescopic pipe (212) penetrates and is inserted in the second sealing cover (203) top, the second filter screen (213) outer circumferential surface is attached to the purification tank (2) inner wall, a plurality of the air injection pipe (214) penetrates and is inserted in the second sealing cover (203) and the second filter screen (213) top, the purification tank (2) outer circumferential surface bottom penetrates and is welded with the first drain pipe (208), the first drain pipe (208) penetrates and is clamped in the heating furnace (201) outer circumferential surface.

6. A multiple-effect evaporation wastewater treatment apparatus according to claim 5, wherein: The gas-liquid separator (3) outer circumferential surface both ends are respectively penetrated and welded with the second connecting pipe (301) and the third connecting pipe (302), the gas-liquid separator (3) bottom penetrates and is welded with the second drain pipe (303), the second connecting pipe (301) relative to the gas-liquid separator (3) other end penetrates and is clamped in the second sealing cover (203) top, the third connecting pipe (302) relative to the gas-liquid separator (3) other end penetrates and is clamped in the filter box (1) outer circumferential surface bottom.

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