CN115140794A

CN115140794A - Low-temperature evaporation device with automatic scale removing function for wastewater treatment

Info

Publication number: CN115140794A
Application number: CN202210802773.6A
Authority: CN
Inventors: 陈昊; 凌剑
Original assignee: Changzhou Dingheng Electromechanical Equipment Co ltd
Current assignee: Changzhou Dingheng Electromechanical Equipment Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-10-04
Anticipated expiration: 2042-07-07
Also published as: CN115140794B

Abstract

The invention discloses a low-temperature evaporation device with an automatic scale removal function for wastewater treatment, and relates to the technical field of wastewater treatment. According to the invention, through the cyclic low-temperature evaporation of the wastewater, the salt analysis output in the single evaporation process is reduced, the integral wastewater concentration effect is improved, the device realizes the cyclic utilization of heat in the cyclic heat exchange process, and the integral energy utilization rate of the device is greatly improved.

Description

Low-temperature evaporation device with automatic scale removing function for wastewater treatment

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to a low-temperature evaporation device with an automatic scale removal function for wastewater treatment.

Background

The high-concentration wastewater is generated in the production and processing of enterprises, the high-concentration wastewater is mainly high-salinity wastewater, the wastewater can be discharged only through harmless treatment, the cost of entrusting third-party treatment is high, most enterprises adopt a mode of carrying out reduction treatment on the wastewater and then entrusting third-party treatment to reduce the cost of wastewater treatment, but the existing low-temperature wastewater evaporation device has more defects and cannot meet the use requirement.

Conventional waste water low temperature evaporation equipment only carries out single low temperature evaporation to waste water at the in-process that uses, and to the waste water of different concentrations, the effect of its single evaporation is all the same, unable effective control waste water concentration, if the waste water concentration after the evaporation is too big, then cause the damage to equipment itself easily, if the waste water concentration after the evaporation undersize, then fail follow-up waste water treatment's of furthest saving cost. Although part of the equipment can circulate low-temperature evaporation, the energy consumption is greatly improved, and an effective concentration control means is still lacked for the concentration of finally output wastewater.

In-process at the waste water evaporation, the evaporation position of conventional equipment can tend to unanimity, water evaporation appears for a long time in this position department, the salinity is appeared, the evaporation of long-term same position department water can lead to this position all the time because the evaporation heat absorption and the temperature is lower, when the heat transfer of other positions comes, new water evaporation again, the difference in temperature appears in this position and all the other positions in the evaporating pot, the difference in temperature concentrates on certain region for a long time and leads to this position lateral wall to lead to stress concentration because of the difference of hot expanding shrinkage proportion, finally influence the life of evaporating pipe, on the other hand, traditional equipment lacks the removal mechanism of incrustation scale, carry out water evaporation in same position for a long time, then more salt stains also can appear in this position, this salt stain, the incrustation scale piles up, also can cause the influence to the intensity of evaporating pipe.

Disclosure of Invention

The present invention is directed to a low-temperature evaporation apparatus for wastewater treatment with an automatic descaling function, which solves the above-mentioned problems of the prior art.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a low temperature evaporation plant for waste water treatment with automatic descale function, includes evaporation subassembly, condensation subassembly, circulation subassembly, centrifugal pump, deposits the liquid jar, evaporation subassembly and condensation subassembly link to each other, and condensation subassembly and centrifugal pump link to each other, and the one end of condensation subassembly and deposit liquid jar looks UNICOM are kept away from to the centrifugal pump, and circulation subassembly both ends communicate with evaporation subassembly each other respectively, and circulation subassembly both sides communicate with condensation subassembly each other respectively. Evaporation subassembly is with the evaporation of water in the waste water, moisture after the evaporation is imported into the condensation subassembly, remain waste water and import into the circulation subassembly, the moisture of evaporation carries out the heat transfer with heat transfer fluid in the condensation subassembly, the moisture of evaporation condenses, it stores the liquid jar to be imported by the centrifugal pump in, heat transfer fluid heat transfer back and remain waste water and carry out the heat transfer in the circulation subassembly, heat transfer fluid after the heat transfer is through cooling used repeatedly, remaining waste water imports the evaporation subassembly circulation evaporation once more, just discharge after reaching standard until waste water concentration. According to the invention, through the cyclic low-temperature evaporation of the wastewater, the salt analysis output in the single evaporation process is reduced, the integral wastewater concentration effect is improved, the device realizes the cyclic utilization of heat in the cyclic heat exchange process, and the integral energy utilization rate of the device is greatly improved.

Further, the evaporation assembly includes the evaporating pot, the vacuum pump, the inlet, atomizer, retrieve the unit, the liquid outlet, the evaporating pot passes through pipeline and vacuum pump looks UNICOM, atomizer sets up on the inside top of evaporating pot, the evaporating pot top is through pipeline and condensation subassembly looks UNICOM, atomizer is provided with the multiunit, the atomizer top is provided with the installation pipe network, atomizer and installation pipe network looks UNICOM, installation pipe network one end and inlet looks UNICOM, the installation pipe network other end and the mutual UNICOM of circulation subassembly, it sets up in the inside bottom side of evaporating pot to retrieve the unit, evaporating pot bottom one side and liquid outlet link to each other, evaporating pot bottom opposite side and circulation subassembly link to each other. The invention has the advantages that the cut-off electromagnetic valves are arranged on all pipelines, and unified electric control can be carried out. Waste water is input into the installation pipe network from the inlet, and then is sprayed out through the atomizing nozzle, before spraying, the vacuum pump carries out vacuum-pumping treatment on the inside of the evaporation tank, the pressure inside the evaporation tank is reduced, the boiling point of liquid is reduced, after the waste water is sprayed out, part of water is evaporated, impurities and residual water fall to the recovery unit for recovery, the mixed liquid is concentrated, the concentrated liquid is input into the circulating assembly to be heated, the steps are repeated again, and the evaporated steam is upwards input into the condensing assembly.

Further, retrieve the unit and include the center pin, the rotating electrical machines, first fixed plate, the second fixed plate, the scraper blade sword, the heater strip, detect the part, center pin and evaporating pot rotate to be connected, rotating electrical machines and evaporating pot bottom fastening connection, the output shaft and the center shaft fastening connection of rotating electrical machines, first fixed plate, second fixed plate and center shaft fastening connection, first fixed plate is located second fixed plate top, the inside heater strip that is provided with of first fixed plate, scraper blade sword and first fixed plate, the one end fastening connection of center pin is kept away from to the second fixed plate, detect the one end fastening connection that part and center shaft are close to the rotating electrical machines. The rotating motor drives the central shaft to rotate, the central shaft drives the first fixing plate and the second fixing plate to rotate, the first fixing plate and the second fixing plate drive the scraper knife to rotate, and the heating wire heats water sprayed out of the atomizing nozzle.

Further, the detection part has a plurality of, a plurality of detection part is around center pin evenly distributed, a plurality of detection part is along axial distribution at different aspect, the detection part includes the extension rod, the arc chamber, compression spring, the pick-up plate, fixed contact, movable contact, extension rod one end and center pin fastening connection, the extension rod is kept away from the one end and the arc fastening connection of center pin, the inside arc chamber that is provided with of arc, pick-up plate one end and arc chamber sliding connection, the pick-up plate both sides are provided with folding closing plate, folding closing plate covers the arc chamber, compression spring one end and arc chamber lateral wall fastening connection, the compression spring other end and arc fastening connection, the one end that the arc stretches out the arc chamber is provided with movable contact, the one side that the center pin was kept away from to the arc is provided with fixed contact. In-process at waste water low temperature evaporation, moisture is constantly passed, the concentration of waste water constantly increases, the content of aquatic impurity, the precipitation volume of salinity constantly increases, at the in-process of stirring water, the produced resistance of water constantly increases yet, the center pin drives the extension rod rotation at rotatory in-process, the extension rod drives the arc and rotates, arc pivoted in-process drives the pick-up plate and rotates, set up through reasonable direction, can make the flow resistance that the pick-up plate received when rotating towards one side of compression spring, compression spring's compression volume is carried out and is constantly promoted along with low temperature evaporation's circulation, when compression spring compression sets for the limit, movable contact and fixed contact, be provided with the contact inductor on the fixed contact, when contacting with the movable contact, the contact inductor can send the sensing signal, when each detection part all sends the sensing signal, the switching condition satisfies, the solenoid valve that ends in the pipeline that evaporation tank bottoms portion and circulation subassembly link to each other is closed, the solenoid valve that ends in the liquid outlet is opened, waste water after the evaporation process is discharged from the liquid outlet. According to the invention, the plurality of detection components are arranged in the axial staggered manner, so that the detection components are spirally upwards wound, and the structure is contacted with different positions of different liquid layers in the axial direction during rotation, so that the detection mode can avoid output errors caused by local concentration differences, the spiral mechanism can also avoid accumulation of salt at the bottom during rotation, and the uniformity of salt content during discharge of waste water is improved. On the other hand, this structure controls final output position through flow resistance and switches, can both accurately concentrate to the optimum state after the waste water of input different types, and this state guarantees can be the at utmost when having got rid of moisture, excessive salt analysis play again can not appear, influences the liquid and carries.

Further, the scraper blade sword includes the toper blade, the semi-arc piece, the connective bar, toper blade and first fixed plate, second fixed plate fastening connects, the first fixed plate is kept away from to the toper blade, one side of second fixed plate sets up to the arc, the toper blade is close to first fixed plate, one side of second fixed plate sets up to the toper inclined plane, the semi-arc piece has a plurality of, a plurality of semi-arc piece equidistance is established ties on the connective bar, connective bar and first fixed plate, second fixed plate fastening connects, semi-arc piece one side is the arc surface, semi-arc piece one side is the plane, the planar one side of semi-arc piece is close to the toper blade, the toper blade is kept away from to semi-arc piece arc surface one side. At first fixed plate, the pivoted in-process of second fixed plate, the scraper blade sword rotates along with it, and the conical blade is at the pivoted in-process, and the curved one side is hugged closely on the evaporating pot lateral wall, and incrustation scale, the salt stain of evaporating pot surface knot are scraped to conical inclined plane one side. Rivers carry the incrustation scale that is scraped off, the salt stain flows to half arc piece department, one side that a plurality of half arc pieces and toper blade kept away from the evaporating pot surface forms the wedge space, the rivers pressure increase of flow direction wedge space department, can flow towards the gap department of half arc piece both sides, and adjacent half arc piece all can produce the rivers to the reposition of redundant personnel of both sides, rivers take place the offset in gap department, the clearance that two adjacent half arc pieces can be followed to the final rivers is to being close to evaporating pot center one side and is flowed, evaporating pot one side is kept away from to half arc piece sets up to the arc surface, can increase the velocity of flow of half arc piece upper surface one side when rotating, thereby reduce the rivers pressure that half arc piece is close to evaporating pot center one side. According to the invention, the water flow pressure of the semi-arc block close to one side of the conical blade is increased through the arrangement of the wedge-shaped space, the water flow pressure of the semi-arc block close to one side of the center of the evaporation tank is reduced through the arrangement of the arc surface, and the water flow pressure are cooperated with each other to jointly promote the flow trend of water flow towards the center of the evaporation tank in the clearance of the semi-arc block, so that the flow trend can drive the scraped scale and salt stains to move towards one side far away from the surface of the evaporation tank, and the secondary covering condition is avoided.

Further, the condensation subassembly includes the condenser pipe, the honeycomb duct, the influent stream cover, the efflux cover, the spiral plywood, the condenser pipe sets up inside the honeycomb duct, the honeycomb duct both ends respectively with the influent stream cover, the fastening connection of efflux cover, the spiral plywood sets up inside the honeycomb duct, spiral plywood and honeycomb duct inner wall fastening connection, the condenser pipe has a plurality of roots, a plurality of condenser pipe both ends respectively with the influent stream cover, the fastening connection of efflux cover, the influent stream cover is through pipeline and evaporation subassembly looks UNICOM, the efflux cover is through pipeline and centrifugal pump looks UNICOM, honeycomb duct lateral wall upper end is through pipeline and circulation subassembly looks UNICOM, honeycomb duct lateral wall lower extreme is through pipeline and circulation subassembly looks UNICOM. The pipeline of the condensing assembly is provided with a power part to keep the fluidity of fluid, the upper end of the flow guide pipe is communicated with the heat pump compressor, the lower end of the flow guide pipe is communicated with the heat dissipation unit, heat exchange fluid after heat dissipation is input into the flow guide pipe, water vapor enters from the inflow sleeve and is distributed into each condensing pipe, the water vapor is input from top to bottom, the spiral layer plates layer the inner spiral of the flow guide pipe, the flow path of the heat exchange fluid is prolonged, and the heat exchange effect is enhanced. The heat exchange fluid and the water vapor are in convection, and the water vapor is condensed and then discharged at the outflow sleeve.

Further, the circulation subassembly includes the circulating pump, circulation heat exchanger, the heat dissipation unit, heat pump compressor, circulating pump one end and evaporating pot bottom are through pipeline looks UNICOM, the circulating pump other end is linked together through pipeline and circulation heat exchanger terminal surface, the one end that the circulating pump was kept away from to the circulation heat exchanger terminal surface is passed through pipeline and installation pipe network looks UNICOM, pipeline and circulation heat exchanger side UNICOM are passed through to heat dissipation unit one end, pipeline and condensation subassembly looks UNICOM are passed through to the one end that circulation heat exchanger was kept away from to the heat dissipation unit of heat dissipation unit, the one end that the heat dissipation unit was kept away from to the circulation heat exchanger side is linked together through pipeline and heat pump compressor, pipeline UNICOM is passed through to the one end that heat dissipation unit was kept away from to one end and the condensation subassembly that heat dissipation unit was kept away from to heat pump compressor. The circulating pump is gone into remaining waste water pump and is gone into circulating heat exchanger, and the remaining waste water after the heat transfer is inputed the evaporating pot once more, and the heat pump compressor heats the heat transfer fluid, and the heat transfer fluid after the heating is inputed circulating heat exchanger and is heated remaining waste water, and the heat transfer fluid is inputed heat dissipation unit department from circulating heat exchanger and dispels the heat, and the input is cooled down to vapor in the condensation subassembly after the heat dissipation.

Furthermore, the circulating heat exchanger comprises an inner flow pipe, an outer ring pipe, an input sleeve, an output sleeve, an input ring cavity, an output ring cavity, an inner sleeve pipe, an outer sleeve pipe, an impeller, a hinge rod and an exchange hole, wherein the input sleeve and the output sleeve are respectively arranged at two ends of the inner flow pipe, the input sleeve and the output sleeve are sleeved on the surface of the inner flow pipe, the inner flow pipe is surrounded inside by the outer ring pipe, two ends of the outer ring pipe are respectively and fixedly connected with the input sleeve and the output sleeve, the input ring cavity is arranged inside the input sleeve, the output ring cavity is arranged inside the output sleeve, the outer sleeve pipe and the inner sleeve pipe are arranged between the outer ring pipe and the inner flow pipe, two sides of the outer sleeve pipe are respectively and fixedly connected with the input sleeve and the output sleeve, two sides of the inner sleeve pipe are respectively and slidably connected with the input sleeve and the output sleeve, the outer sleeve, be provided with a plurality of exchange hole on the interior sleeve pipe, input ring chamber, be provided with air vent and interior sleeve pipe on the output ring chamber lateral wall, clearance UNICOM between the interior flow tube, input ring chamber, be provided with air vent and outer sleeve pipe on the output ring chamber lateral wall, clearance UNICOM between the outer loop pipe, the input cover, output cover is hugged closely each other, input ring intracavity portion is provided with the ring channel, impeller and ring channel one side rotate to be connected, hinge bar one end and impeller center one side are articulated, the hinge bar other end and the one end that the outer sleeve stretched into the input cover are articulated, the input ring chamber outside is through a plurality of pipelines and heat pump compressor UNICOM mutually, the output ring chamber outside is through a plurality of pipelines and radiating element UNICOM mutually. The heat exchange fluid is heated through the heat pump compressor, the heated heat exchange fluid is conveyed into the input ring cavity, the fluid flows from the outer side of the input ring cavity to the middle position continuously, and the fluid can impact the surface of the impeller. According to the invention, the inner side of the inner sleeve occupies a larger area through the arrangement of the inner sleeve and the outer sleeve, the outer side of the outer sleeve occupies a smaller area, heat exchange fluid can flow through the inner side of the inner sleeve and the outer side of the outer sleeve, the heat exchange fluid flowing through the inner side of the inner sleeve exchanges heat with the waste water concentrated solution flowing through the inner flow pipe, the heat exchange fluid flowing through the outer side of the outer sleeve supplements heat to the heat exchange fluid inside the inner sleeve through the exchange holes, the heat supplementing rate is continuously changed due to the reciprocating movement of the inner sleeve, and the axial temperature of the waste water concentrated solution output from the inner flow pipe is different to a certain extent. This heater strip cooperation that sets up in and evaporation subassembly is used, when there is the temperature difference in the axial in the waste water of input, then the evaporation position of waste water after by the atomizer blowout also can appear the difference, and the higher waste water of initial temperature receives the heating of heater strip after the blowout, and the tenesmus in the heating process, only need shorter tenesmus distance will reach evaporating temperature, and the lower waste water of initial temperature then needs the longer distance of tenesmus just can evaporate. The change of whereabouts distance can make the endothermic axial position of moisture evaporation distribute more extensively, and this sets up very big degree and has reduced the difference of the local temperature of evaporating pot wall face that leads to because the heat absorption in the moisture evaporation process, and the absorption of evaporation heat distributes in wider scope, has both promoted the temperature rate of rising back of local position after the evaporation, and the reduction local deformation that extension difference in temperature coverage area can very big degree simultaneously.

Furthermore, the heat dissipation unit comprises a center block, two heat dissipation fins, a fan, a connecting hole and a manifold, wherein the two manifolds are fixed on two sides of the center block, the heat dissipation fins are fixedly connected with the center block, the fan and the heat dissipation fins are fixedly connected with one side, far away from the center block, of the fan and the heat dissipation fins, the connecting hole is provided with a plurality of connecting holes, the connecting holes are formed in the center block, two ends of each connecting hole are respectively communicated with different manifolds, one end, far away from the connecting hole, of one manifold is communicated with the circulating heat exchanger through a pipeline, and one end, far away from the connecting hole, of the other manifold is communicated with the condensing assembly through a pipeline. The heat of the circulating fluid is transferred to the waste water concentrated solution in the circulating heat exchanger, the circulating fluid loses part of the heat and then is input into the collecting cavity and is evenly distributed into the connecting holes, finally the circulating fluid is mixed again in the collecting cavity on the other side of the connecting holes, the heat carried by the circulating fluid is transferred to the radiating fins when the circulating fluid passes through the connecting holes, and the fan sucks external airflow to continuously flow through the surfaces of the radiating fins to radiate the radiating fins. And after heat dissipation is finished, the circulating fluid is input into the condensing assembly again.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, through the cyclic low-temperature evaporation of the wastewater, the salt analysis output in the single evaporation process is reduced, the integral wastewater concentration effect is improved, the device realizes the cyclic utilization of heat in the cyclic heat exchange process, and the integral energy utilization rate of the device is greatly improved. According to the invention, the plurality of detection components are arranged in the axial staggered manner, so that the detection components are spirally upwards wound, and the structure is contacted with different positions of different liquid layers in the axial direction during rotation, so that the detection mode can avoid output errors caused by local concentration differences, the spiral mechanism can also avoid accumulation of salt at the bottom during rotation, and the uniformity of salt content during discharge of waste water is improved. On the other hand, this structure controls final output position through flow resistance and switches, can both accurately concentrate to the optimum state after inputing different kinds of waste water, and this state guarantees can be the at utmost when having got rid of moisture, excessive salt analysis play again can not appear, influences liquid and carries. According to the invention, the water flow pressure of the semi-arc block close to one side of the conical blade is increased through the arrangement of the wedge-shaped space, the water flow pressure of the semi-arc block close to one side of the center of the evaporation tank is reduced through the arrangement of the arc surface, the water flow pressure and the water flow pressure cooperate with each other to jointly promote the flow trend of water flow towards the center of the evaporation tank in the gap of the semi-arc block, and the flow trend can drive the scraped scale and salt to move towards one side far away from the surface of the evaporation tank, so that the secondary covering condition is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the vaporization assembly of the present invention;

FIG. 3 is a schematic diagram of the detection assembly of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a perspective view of the scraper blade of the present invention;

FIG. 6 is a cross-sectional view of a heat dissipating unit of the present invention;

FIG. 7 is a sectional view showing the internal structure of the heat exchanger for circulation according to the present invention;

FIG. 8 is a partial enlarged view of FIG. 7 at B;

FIG. 9 is a partial cross-sectional view of a condensing assembly;

in the figure: 1-evaporation component, 11-evaporation tank, 12-vacuum pump, 13-liquid inlet, 14-atomization nozzle, 15-recovery unit, 151-central shaft, 152-rotary motor, 153-first fixing plate, 154-second fixing plate, 155-scraper knife, 1551-conical blade, 1552-semi-arc block 1553-connecting rod, 156-heating wire, 157-detection part, 1571-extension rod, 1572-arc plate, 1573-arc cavity, 1574-compression spring, 1575-detection plate, 1576-fixed contact, 1577-movable contact, 16-liquid outlet, 2-condensation component 21-condenser pipe, 22-guide pipe, 23-inflow sleeve, 24-outflow sleeve, 25-spiral layer plate, 3-circulation component, 31-circulation pump, 32-circulation heat exchanger, 321-inner flow pipe, 322-outer loop pipe, 323-input sleeve, 324-output sleeve, 325-inner sleeve, 326-outer sleeve, 327-impeller, 328-hinged rod, 329-exchange hole, 33-heat dissipation unit, 331-center block, 332-heat dissipation fin, 333-fan, 334-through hole, 335-manifold, 34-heat pump compressor, 4-centrifugal pump, 5-liquid storage tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1 to 9, the present invention provides a technical solution:

as shown in fig. 1-9, a low-temperature evaporation device with automatic scale removal function for wastewater treatment comprises an evaporation component 1, a condensation component 2, a circulation component 3, a centrifugal pump 4 and a liquid storage tank 5, wherein the evaporation component 1 is connected with the condensation component 2, the condensation component 2 is connected with the centrifugal pump 4, one end of the centrifugal pump 4 far away from the condensation component 2 is communicated with the liquid storage tank 5, two ends of the circulation component 3 are respectively communicated with the evaporation component 1, and two sides of the circulation component 3 are respectively communicated with the condensation component 2. Evaporation subassembly 1 is with the evaporation of water in the waste water, moisture after the evaporation is input into condensation subassembly 2, it inputs circulation subassembly 3 to remain waste water, the moisture of evaporation carries out the heat transfer with heat transfer fluid in condensation subassembly 2, the moisture condensation of evaporation, input into by centrifugal pump 4 and deposit in the liquid jar 5, heat transfer is carried out with remaining waste water in circulation subassembly 3 after the heat transfer fluid heat transfer, heat transfer fluid after the heat transfer is through cooling used repeatedly, remaining waste water inputs evaporation of circulation in the evaporation subassembly 1 once more, just discharge after reaching standard until waste water concentration. According to the invention, through the cyclic low-temperature evaporation of the wastewater, the salt analysis output in the single evaporation process is reduced, the integral wastewater concentration effect is improved, the device realizes the cyclic utilization of heat in the cyclic heat exchange process, and the integral energy utilization rate of the device is greatly improved.

Evaporating assembly 1 includes evaporating pot 11, vacuum pump 12, inlet 13, atomizer 14, retrieve unit 15, liquid outlet 16, evaporating pot 11 passes through pipeline and vacuum pump 12 UNICOM, atomizer 14 sets up on 11 inside tops of evaporating pot, 11 tops of evaporating pot are through pipeline and 2 UNICOMs of condensation subassembly, atomizer 14 is provided with the multiunit, atomizer 14 top is provided with the installation pipe network, atomizer 14 and installation pipe network UNICOMs, installation pipe network one end and inlet 13 UNICOMs, the installation pipe network other end and circulation subassembly 3 UNICOMs each other, it sets up at 11 inside bottom sides of evaporating pot to retrieve unit 15, 11 bottom of evaporating pot one side links to each other with

liquid outlet

16, 11 bottom of evaporating pot opposite side and circulation subassembly 3 link to each other. The invention has the advantages that the stop electromagnetic valves are arranged on all pipelines, and the unified electric control can be carried out. Waste water is input into the installation pipe network from inlet 13, and then is sprayed out through atomizer 14, before spraying out, vacuum pump 12 carries out evacuation treatment to the inside of evaporating pot 11, the pressure inside evaporating pot 11 is reduced, the boiling point of liquid is reduced, after spraying out waste water, partial water body evaporates, impurity and residual water body fall to recovery unit 15 and are recovered, mixed liquid body is concentrated, the concentrated solution is input into circulation subassembly 3 and is heated up and then repeats the above-mentioned steps again, and the vapor of evaporation upwards inputs into condensation subassembly 2.

The recycling unit 15 comprises a central shaft 151, a rotating motor 152, a first fixing plate 153, a second fixing plate 154, a scraper knife 155, a heating wire 156 and a detection component 157, wherein the central shaft 151 is rotatably connected with the evaporation tank 11, the rotating motor 152 is fixedly connected with the bottom of the evaporation tank 11, an output shaft of the rotating motor 152 is fixedly connected with the central shaft 151, the first fixing plate 153, the second fixing plate 154 is fixedly connected with the central shaft 151, the first fixing plate 153 is positioned above the second fixing plate 154, the heating wire 156 is arranged inside the first fixing plate 153, the scraper knife 155 is fixedly connected with one end of the first fixing plate 153 and one end of the second fixing plate 154 far away from the central shaft 151, and the detection component 157 is fixedly connected with one end of the central shaft 151 close to the rotating motor 152. The rotating motor 152 drives the central shaft 151 to rotate, the central shaft 151 drives the first fixing plate 153 and the second fixing plate 154 to rotate, the first fixing plate 153 and the second fixing plate 154 drive the scraper blade 155 to rotate, and the heating wire 156 heats the water sprayed by the atomizing nozzle 14.

The detection part 157 has a plurality of, a plurality of detection part 157 is around center pin 151 evenly distributed, a plurality of detection part 157 along axial distribution at different aspect, detection part 157 includes extension rod 1571, arc 1572, arc chamber 1573, compression spring 1574, pick-up plate 1575, fixed contact 1576, movable contact 1577, extension rod 1571 one end and center pin 151 fastening connection, extension rod 1571 keeps away from center pin 151's one end and arc 1572 fastening connection, arc 1572 is inside to be provided with arc chamber 1573, pick-up plate 1575 one end and arc chamber 1573 sliding connection, pick-up plate 1575 both sides are provided with folding sealing plate, folding sealing plate covers arc chamber 1573, compression spring 1574 one end and arc chamber 1573 lateral wall fastening connection, the compression spring 1574 other end and arc 1572 fastening connection, the one end that arc 1572 stretches out arc chamber 1573 is provided with movable contact 1577, one side that arc 1572 kept away from center pin 151 is provided with fixed contact 1576. In the process of waste water low temperature evaporation, moisture constantly passes, the concentration of waste water constantly increases, the content of aquatic impurity, the precipitation volume of salinity constantly increases, at the in-process of stirring water, the produced resistance of water constantly increases, center pin 151 drives extension rod 1571 at rotatory in-process and rotates, extension rod 1571 drives arc 1572 and rotates, arc 1572 pivoted in-process drives pick-up plate 1575 and rotates, set up through reasonable direction, can make the flow resistance that pick-up plate 1575 received when rotating towards one side of compression spring 1574, the compression volume of compression spring 1574 goes on and constantly promotes along with the circulation of low temperature evaporation, when compression spring 1574 compresses to setting for the limit, movable contact 1577 and fixed contact 1576 contact, be provided with the contact inductor on fixed contact 1576, when contacting with movable contact 1577, the contact inductor can send the sensing signal, when each detector part all sends the sensing signal, the switching condition satisfies, the by closing of solenoid valve in the pipeline that evaporating pot 11 bottom and circulating assembly 3 link to each other, by closing the solenoid valve in the liquid outlet, open after the waste water evaporation liquid outlet 16, discharge from the evaporation processing discharge. According to the invention, the plurality of detection components 151 are arranged in a staggered manner in the axial direction, so that the detection components 151 are spirally wound upwards, and the structure contacts different positions of different liquid layers in the axial direction during rotation, so that the detection mode can avoid output errors caused by local concentration differences, and the spiral mechanism can avoid accumulation of salt at the bottom during rotation, thereby improving the uniformity of salt content during discharge of waste water. On the other hand, this structure controls final output position through flow resistance and switches, can both accurately concentrate to the optimum state after inputing different kinds of waste water, and this state guarantees can be the at utmost when having got rid of moisture, excessive salt analysis play again can not appear, influences liquid and carries.

The scraper knife 155 comprises a conical blade 1551, a semi-arc-shaped block 1552 and a connecting rod 1553, the conical blade 1551 is fixedly connected with the first fixing plate 153 and the second fixing plate 154, one side, far away from the first fixing plate 153 and the second fixing plate 154, of the conical blade 1551 is arc-shaped, one side, close to the first fixing plate 153 and one side, close to the second fixing plate 154, of the conical blade 1551 is conical inclined, the semi-arc-shaped blocks 1552 are multiple, the semi-arc-shaped blocks 1552 are connected in series on the connecting rod 1553 in an equidistant mode, the connecting rod 1553 is fixedly connected with the first fixing plate 153 and the second fixing plate 154, one side of each semi-arc-shaped block 1552 is an arc surface, one side of each semi-arc-shaped block 1552 is a plane, one side of each semi-arc-shaped block 1552 is close to the conical blade 1551, and one side of each semi-arc-shaped block 1552 is far away from the conical blade 1551. In the process that the first fixing plate 153 and the second fixing plate 154 rotate, the scraper blade 155 rotates together with the first fixing plate, the conical blade 1551 rotates, the arc-shaped surface is tightly attached to the side wall of the evaporation tank 11, and scale and salt stains on the surface of the evaporation tank 11 are scraped by one side of the conical inclined surface. Water flow carries scraped scale and salt stains to flow to the semi-arc-shaped block 1552, a wedge-shaped space is formed at one side, away from the surface of the evaporation tank 11, of the plurality of semi-arc-shaped blocks 1552 and the conical blade 1551, water flow pressure intensity flowing to the wedge-shaped space is increased and can flow towards gaps on two sides of the semi-arc-shaped block 1552, adjacent semi-arc-shaped blocks 1552 can generate water flow shunting towards two sides, the water flow generates hedging at the gaps, the water flow finally flows out from the gap between the two adjacent semi-arc-shaped blocks 1552 to one side close to the center of the evaporation tank 11, one side, away from the evaporation tank 11, of the semi-arc-shaped block 1552 is provided with an arc surface, flow speed on one side of the upper surface of the semi-arc-shaped block 1552 can be increased during rotation, and accordingly water flow pressure intensity of one side, close to the center of the evaporation tank 11, of the semi-arc-shaped block 1552 is reduced. According to the invention, the water flow pressure of the semi-arc block 1552 close to one side of the conical blade 1551 is increased through the arrangement of the wedge-shaped space, the water flow pressure of the semi-arc block 1552 close to one side of the center of the evaporation tank 11 is reduced through the arrangement of the arc surface, the two cooperate with each other to jointly promote the flow trend of water flow towards the center of the evaporation tank 11 in the gap of the semi-arc block 1552, and the flow trend can drive the scraped scale and salt to move towards one side far away from the surface of the evaporation tank 11, so that the secondary covering condition is avoided.

Condensation subassembly 2 includes condenser pipe 21, honeycomb duct 22, inflow cover 23, outflow cover 24, spiral plywood 25, condenser pipe 21 sets up inside honeycomb duct 22, honeycomb duct 22 both ends respectively with inflow cover 23, outflow cover 24 fastening connection, spiral plywood 25 sets up inside honeycomb duct 22, spiral plywood 25 and honeycomb duct 22 inner wall fastening connection, condenser pipe 21 has a plurality of, a plurality of condenser pipe 21 both ends respectively with inflow cover 23, outflow cover 24 fastening connection, inflow cover 23 passes through pipeline and evaporation subassembly 1 looks UNICOM, outflow cover 24 passes through pipeline and 4 UNICOMs of centrifugal pump, 3 UNICOMs of pipeline and circulation subassembly are passed through to honeycomb duct 22 lateral wall upper end, honeycomb duct 22 lateral wall lower extreme passes through pipeline and circulation subassembly 3 UNICOMs mutually. The pipeline of the condensing assembly 2 is provided with a power part to keep the fluidity of fluid, the upper end of the guide pipe 22 is communicated with the heat pump compressor 34, the lower end of the guide pipe 22 is communicated with the heat dissipation unit 33, the heat-exchange fluid after heat dissipation is input into the guide pipe 22, the water vapor enters from the inflow sleeve 23 and is distributed into the condensing pipes 21 and is input from top to bottom, the spiral layer plate 25 spirally layers the inside of the guide pipe 22, the flow path of the heat-exchange fluid is prolonged, and the heat-exchange effect is enhanced. The heat exchange fluid and the water vapor are in convection, and the water vapor is condensed and then discharged at the outflow sleeve.

Circulation subassembly 3 includes circulating pump 31, circulation heat exchanger 32, heat dissipation unit 33,

heat pump compressor

34, 31 one end of circulating pump and 11 bottoms of evaporating pot are passed through pipeline looks UNICOM, the circulating pump 31 other end is linked together through pipeline and circulation heat exchanger 32 terminal surface, the one end that circulation heat exchanger 32 terminal surface kept away from circulating pump 31 is passed through the pipeline and is installed the pipe network looks UNICOM, pipeline and circulation heat exchanger 32 side UNICOM are passed through to heat dissipation unit 33 one end, the one end that heat dissipation unit 32 was kept away from to heat dissipation unit 33 is passed through pipeline and condensation subassembly 2 UNICOM, the one end that heat dissipation unit 33 was kept away from to circulation heat exchanger 32 side is passed through the pipeline and is linked together with heat pump compressor 34, heat pump compressor 34 keeps away from the one end of circulation heat exchanger 32 and the one end that heat dissipation unit 33 was kept away from to condensation subassembly 2 and passes through the pipeline UNICOM. The circulating pump 31 pumps the residual wastewater into the circulating heat exchanger 32, the residual wastewater after heat exchange is input into the evaporation tank 11 again, the heat exchange fluid is heated by the heat pump compressor 34, the heated heat exchange fluid is input into the circulating heat exchanger 32 to heat the residual wastewater, the heat exchange fluid is input into the heat dissipation unit 33 from the circulating heat exchanger 32 to dissipate heat, and the heat exchange fluid is input into the condensation assembly 2 to cool the water vapor after heat dissipation.

The circulating heat exchanger 32 comprises an inner flow pipe 321, an outer ring pipe 322, an input sleeve 323, an output sleeve 324, an input ring cavity, an output ring cavity, an inner sleeve 325, an outer sleeve 326, an impeller 327, a hinge rod 328 and an exchange hole 329, wherein the input sleeve 323 and the output sleeve 324 are respectively arranged at two ends of the inner flow pipe 321, the input sleeve 323 and the output sleeve 324 are sleeved on the surface of the inner flow pipe 321, the inner flow pipe 321 is surrounded inside by the outer ring pipe 322, two ends of the outer ring pipe 322 are respectively and fixedly connected with the input sleeve 323 and the output sleeve 324, the input ring cavity is arranged inside the input sleeve 323, the output ring cavity is arranged inside the output sleeve 324, the outer sleeve 326 and the inner sleeve 325 are arranged between the outer ring pipe 322 and the inner flow pipe 321, two sides of the outer sleeve 326 are respectively and fixedly connected with the input sleeve 323 and the output sleeve 324, two sides of the inner sleeve 325 are respectively and slidably connected with the input sleeve 323 and the output sleeve 324, the outer sleeve 326 and the inner sleeve 325 are provided with a plurality of exchange holes 329, the side walls of the input ring cavity and the output ring cavity are provided with vent holes communicated with gaps between the inner sleeve 325 and the inner flow pipe 321, the side walls of the input ring cavity and the output ring cavity are provided with vent holes communicated with gaps between the outer sleeve 326 and the outer sleeve 322, the input sleeve 323 and the output sleeve 324 are tightly attached to each other, an annular groove is formed in the input ring cavity, the impeller 327 is rotatably connected with one side of the annular groove, one end of the hinge rod 328 is hinged with one side of the center of the impeller 327, the other end of the hinge rod 328 is hinged with one end, extending into the input sleeve 323, of the outer sleeve 326, the outer side of the input ring cavity is communicated with the heat pump compressor 34 through a plurality of pipelines, and the outer side of the output ring cavity is communicated with the heat dissipation unit 33 through a plurality of pipelines. The heat exchange fluid is heated through the heat pump compressor 34, the heated heat exchange fluid is conveyed into the input ring cavity, the fluid flows from the outer side of the input ring cavity to the middle position continuously, the fluid can impact the surface of the impeller 327, one side of the impeller 327 is arranged in the annular groove, the impeller 327 is always pushed by the fluid towards one side, the impeller 327 can rotate continuously, the inner sleeve 325 is driven by the hinged rod 328 to move in a reciprocating mode when the impeller 327 rotates, the inner sleeve 325 and the exchange holes 329 formed in the outer sleeve 326 are originally in a partially overlapped state, and when the inner sleeve 325 moves in a reciprocating mode, the overlapped area of the exchange holes 329 can be increased and reduced in a circulating mode. According to the invention, the inner side of the inner sleeve 325 occupies a larger area through the arrangement of the positions of the inner sleeve 325 and the outer sleeve 326, the outer side of the outer sleeve 326 occupies a smaller area, heat exchange fluid can flow through the inner side of the inner sleeve 325 and the outer side of the outer sleeve 326, the heat exchange fluid flowing through the inner side of the inner sleeve 325 exchanges heat with the waste water concentrated solution flowing through the inner flow pipe 321, the heat exchange fluid flowing through the outer side of the outer sleeve 326 supplements heat to the heat exchange fluid inside the inner sleeve 325 through the exchange hole 329, the heat supplementing rate is changed continuously due to the reciprocating movement of the inner sleeve 325, and the axial temperature of the waste water concentrated solution output from the inner flow pipe 321 also has a certain difference. This heater strip cooperation that sets up and in the evaporation plant is used, when there is the difference in temperature in the axial when the waste water of input, then the evaporation position of waste water after 14 blowout by atomizer also can appear the difference, the higher waste water of initial temperature receives the heating of heater strip 156 after the blowout, drops in the heating process, only needs shorter tenesmus distance will reach evaporating temperature, and the lower waste water of initial temperature then needs the longer distance of tenesmus just can evaporate. The change of tenesmus distance can make the endothermic axial position of moisture evaporation distribute more widely, and this sets up very big degree and has reduced the difference of 11 wall local temperature of evaporating pot because the heat absorption leads to in the moisture evaporation process, and the absorption of evaporation heat distributes in wider scope, has both promoted the temperature rise rate of local position after the evaporation, prolongs the reduction local deformation that the difference in temperature coverage area can very big degree simultaneously.

The heat dissipation unit 33 comprises a central block 331, heat dissipation fins 332, fans 333, connecting holes 334 and manifold cavities 335, wherein two manifold cavities 335 are provided, a plurality of heat dissipation fins 332 are fixed on two sides of the central block 331, the heat dissipation fins 332 are fastened with the central block 331, the fans 333 are fastened with one sides of the heat dissipation fins 332 far away from the central block 331, a plurality of connecting holes 334 are provided, the connecting holes 334 are arranged inside the central block 331, two ends of the connecting holes 334 are respectively communicated with different manifold cavities 335, one end of one manifold cavity 335 far away from the connecting holes 334 is communicated with the circulating heat exchanger 32 through a pipeline, and one end of the other manifold cavity 335 far away from the connecting holes 334 is communicated with the condensation component 2 through a pipeline. The heat of the circulating fluid is transferred to the waste water concentrated solution in the circulating heat exchanger 32, the circulating fluid loses part of the heat, then is input into the collecting chamber 335, and is evenly distributed into the connecting holes 334, and finally is mixed again in the collecting chamber 335 on the other side of the connecting holes 334, when the circulating fluid passes through the connecting holes 334, the heat carried by the circulating fluid is transferred to the radiating fins 332, and the fan 333 sucks external airflow to continuously flow through the surfaces of the radiating fins 332 to radiate the radiating fins 332. After the heat dissipation is completed, the circulating fluid is again fed into the condensing unit 2.

The working principle of the invention is as follows: waste water is input into the installation pipe network from

inlet

13, and 14 spouts of rethread atomizer, and before the blowout, vacuum pump 12 carries out evacuation processing to the inside of evaporating pot 11, has reduced the inside pressure of evaporating pot 11, has reduced the boiling point of liquid, and waste water blowout back, partial water evaporates, and impurity and remaining water fall to recovery unit 15 department and retrieve. The rotating motor 152 drives the central shaft 151 to rotate, the central shaft 151 drives the first fixing plate 153 and the second fixing plate 154 to rotate, the first fixing plate 153 and the second fixing plate 154 drive the scraper blade 155 to rotate, and the heating wire 156 heats the water sprayed by the atomizing nozzle 14. The water vapor enters from the inflow sleeve 23, is divided into the condensing pipes 21 and is input from top to bottom, the heat exchange fluid and the water vapor are in convection, and the water vapor is condensed and then is discharged at the outflow sleeve. The circulating pump 31 pumps the residual wastewater into the circulating heat exchanger 32, the residual wastewater after heat exchange is input into the evaporation tank 11 again, the heat exchange fluid is heated by the heat pump compressor 34, the heated heat exchange fluid is input into the circulating heat exchanger 32 to heat the residual wastewater, the heat exchange fluid is input into the heat dissipation unit 33 from the circulating heat exchanger 32 to dissipate heat, and the heat exchange fluid is input into the condensation assembly 2 to cool the water vapor after heat dissipation. The whole process is carried out again, and the wastewater is discharged from the liquid outlet 16 until the detection unit detects that the concentration of the wastewater reaches the standard.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-temperature evaporation device with an automatic scale removing function for wastewater treatment is characterized in that: the low-temperature evaporation device comprises an evaporation component (1), a condensation component (2), a circulation component (3), a centrifugal pump (4) and a liquid storage tank (5), wherein the evaporation component (1) is connected with the condensation component (2), the condensation component (2) is connected with the centrifugal pump (4), one end of the condensation component (2) is far away from the centrifugal pump (4) and the liquid storage tank (5) are communicated with each other, two ends of the circulation component (3) are communicated with the evaporation component (1) respectively, and two sides of the circulation component (3) are communicated with the condensation component (2) respectively.

2. The low-temperature evaporation apparatus for wastewater treatment with automatic scale removal function according to claim 1, characterized in that: evaporation assembly (1) includes evaporating pot (11), vacuum pump (12), inlet (13), atomizer (14), retrieves unit (15), liquid outlet (16), evaporating pot (11) is through pipeline and vacuum pump (12) looks UNICOM, atomizer (14) set up on the inside top of evaporating pot (11), pipeline and condensation component (2) looks UNICOM are passed through at evaporating pot (11) top, atomizer (14) are provided with the multiunit, and atomizer (14) top is provided with the installation pipe network, atomizer (14) and installation pipe network looks UNICOM, installation pipe network one end and inlet (13) looks UNICOM, the installation pipe network other end and circulation component (3) are UNICOM each other, retrieve unit (15) and set up in evaporating pot (11) inside bottom side, evaporating pot (11) bottom one side links to each other with liquid outlet (16), and evaporating pot (11) bottom opposite side links to each other with circulation component (3).

3. A low-temperature evaporation apparatus for wastewater treatment with automatic scale removal function according to claim 2, characterized in that: the recycling unit (15) comprises a central shaft (151), a rotating motor (152), a first fixing plate (153), a second fixing plate (154), a scraper knife (155), a heating wire (156) and a detection component (157), the central shaft (151) is rotatably connected with the evaporating pot (11), the rotating motor (152) is fixedly connected with the bottom of the evaporating pot (11), an output shaft of the rotating motor (152) is fixedly connected with the central shaft (151), the first fixing plate (153), the second fixing plate (154) is fixedly connected with the central shaft (151), the first fixing plate (153) is located above the second fixing plate (154), the heating wire (156) is arranged inside the first fixing plate (153), the scraper knife (155) is fixedly connected with one end, far away from the central shaft (151), of the first fixing plate (153) and one end, close to the rotating motor (152), of the detection component (157) and one end, close to the central shaft (151).

4. The low-temperature evaporation apparatus for wastewater treatment with automatic scale removal function according to claim 3, characterized in that: the detection part (157) has a plurality of, and a plurality of detection part (157) is around center pin (151) evenly distributed, and a plurality of detection part (157) are at different levels along axial distribution, detection part (157) include extension rod (1571), arc (1572), arc chamber (1573), compression spring (1574), pick-up plate (1575), fixed contact (1576), movable contact (1577), extension rod (1571) one end and center pin (151) fastening connection, the one end and the arc (1572) fastening connection of center pin (151) are kept away from in extension rod (1571), arc (1572) inside is provided with arc chamber (1573), pick-up plate (1575) one end and arc chamber (1573) sliding connection, pick-up plate (1575) both sides are provided with folding sealing plate, folding sealing plate covers arc chamber (1573), compression spring (1574) one end and arc chamber (1573) lateral wall fastening connection, compression spring (1574) other end and arc (1572) fastening connection, fixed contact (1572) one end that stretches out of fixed contact (1576) is provided with arc chamber (1572 one side.

5. The low-temperature evaporation apparatus for wastewater treatment with automatic scale removal function according to claim 4, wherein: the scraper knife (155) comprises a conical blade (1551), a semi-arc-shaped block (1552) and a connecting rod (1553), the conical blade (1551) is fixedly connected with the first fixing plate (153) and the second fixing plate (154), one side, far away from the first fixing plate (153) and the second fixing plate (154), of the conical blade (1551) is arc-shaped, one side, close to the first fixing plate (153) and the second fixing plate (154), of the conical blade (1551) is provided with a conical inclined surface, half arc piece (1552) have a plurality of, and a plurality of half arc piece (1552) equidistance is established ties on connective bar (1553), connective bar (1553) and first fixed plate (153), second fixed plate (154) fastening connection, half arc piece (1552) one side is the arc surface, and half arc piece (1552) one side is the plane, and half arc piece (1552) planar one side is close to tapered blade (1551), and tapered blade (1551) is kept away from to half arc piece (1552) arc surface one side.

6. The low-temperature evaporation apparatus for wastewater treatment with automatic scale removal function according to claim 5, characterized in that: condensation subassembly (2) include condenser pipe (21), honeycomb duct (22), inflow cover (23), the cover (24) of effluenting, spiral plywood (25), condenser pipe (21) set up inside honeycomb duct (22), honeycomb duct (22) both ends respectively with inflow cover (23), the cover (24) fastening connection of effluenting, spiral plywood (25) set up inside honeycomb duct (22), spiral plywood (25) and honeycomb duct (22) inner wall fastening connection, condenser pipe (21) have a plurality of roots, a plurality of condenser pipe (21) both ends respectively with inflow cover (23), the cover (24) fastening connection of effluenting, inflow cover (23) are through pipeline and evaporation subassembly (1) looks UNICOM, the cover (24) of effluenting is through pipeline and centrifugal pump (4) looks UNICOM, honeycomb duct (22) lateral wall upper end is through pipeline and circulation subassembly (3) looks UNICOM, honeycomb duct (22) lateral wall lower extreme is through pipeline and centrifugal pump subassembly (3) looks UNICOM.

7. The low-temperature evaporation apparatus for wastewater treatment with automatic scale removal function according to claim 6, characterized in that: circulation subassembly (3) are including circulating pump (31), circulation heat exchanger (32), heat dissipation unit (33), heat pump compressor (34), pipeline looks UNICOM is passed through to circulating pump (31) one end and evaporating pot (11) bottom, the circulating pump (31) other end is linked together through pipeline and circulation heat exchanger (32) terminal surface, the one end that circulation pump (31) were kept away from to circulation heat exchanger (32) terminal surface is passed through the pipeline and is installed pipe network looks UNICOM, pipeline and circulation heat exchanger (32) side UNICOM are passed through to heat dissipation unit (33) one end, the one end that circulation heat exchanger (32) were kept away from in heat dissipation unit (33) is passed through pipeline and condensation subassembly (2) looks UNICOM, the one end that heat dissipation unit (33) were kept away from to circulation heat exchanger (32) side is linked together through pipeline and heat pump compressor (34), the one end that heat pump compressor (34) were kept away from circulation heat exchanger (32) and one end that heat dissipation unit (33) were kept away from in condensation subassembly (2) are passed through the pipeline UNICOM.

8. The low-temperature evaporation apparatus for wastewater treatment with automatic scale removal function according to claim 7, characterized in that: the circulating heat exchanger (32) comprises an inner flow pipe (321), an outer ring pipe (322), an input sleeve (323), an output sleeve (324), an input ring cavity, an output ring cavity, an inner sleeve pipe (325), an outer sleeve pipe (326), an impeller (327), a hinged rod (328) and an exchange hole (329), wherein the input sleeve (323) and the output sleeve (324) are respectively arranged at two ends of the inner flow pipe (321), the input sleeve (323) and the output sleeve (324) are sleeved on the surface of the inner flow pipe (321), the inner flow pipe (321) is surrounded by the outer ring pipe (322), two ends of the outer ring pipe (322) are respectively and fixedly connected with the input sleeve (323) and the output sleeve (324), the input ring cavity is arranged inside the input sleeve (323), the output ring cavity is arranged inside the output sleeve (324), the outer sleeve pipe (326) and the inner sleeve pipe (325) are arranged between the outer sleeve pipe (322) and the inner sleeve pipe (321), two sides of the outer sleeve pipe (326) are respectively and fixedly connected with the input sleeve (323) and the output sleeve (324) and the inner sleeve pipe (324), two sides of the inner sleeve pipe (325) are respectively and slidably connected with the input ring cavity, the outer sleeve pipe (326) and the exchange hole (329), and the exchange hole (325), and the exchange hole are arranged on the side wall of the exchange hole (329), and the exchange hole (325), and the side wall of the exchange hole (325), and the exchange hole (326) are arranged on the side wall of the input ring cavity, clearance UNICOM between interior flow tube (321), be provided with air vent and outer tube (326), clearance UNICOM between outer ring pipe (322) on input ring chamber, the output ring chamber lateral wall, input cover (323), output cover (324) are hugged closely each other, input ring intracavity portion is provided with the ring channel, impeller (327) and ring channel one side are rotated and are connected, hinge bar (328) one end and impeller (327) center one side are articulated, the one end that hinge bar (328) other end and outer tube (326) stretched into input cover (323) is articulated, the input ring chamber outside is through a plurality of pipelines and heat pump compressor (34) UNICOM mutually, the output ring chamber outside is through a plurality of pipelines and radiating unit (33) UNICOM mutually.

9. A low-temperature evaporation apparatus for wastewater treatment with automatic scale removal function according to claim 8, characterized in that: radiating unit (33) are including center piece (331), radiating fin (332), fan (333), ally oneself with through-hole (334), manifold (335) have two, center piece (331) both sides are fixed with a plurality of radiating fin (332), radiating fin (332) and center piece (331) fastening connection, fan (333) and radiating fin (332) keep away from one side fastening connection of center piece (331), ally oneself with through-hole (334) have a plurality of, and a plurality of ally oneself with through-hole (334) set up inside center piece (331), ally oneself with through-hole (334) both ends respectively with different cavity (335) UNICOM, one manifold (335) keep away from the one end and the circulation heat exchanger (32) of ally oneself with through-hole (334) and communicate through the pipeline, another the one end and the condensation subassembly (2) that ally oneself with through-hole (334) are kept away from to manifold (335) pass through the pipeline UNICOM.