Sewage evaporative air cooler

Abstract

The present invention belongs to the technical field of equipment utilizing multiple media contact heat exchange, and discloses a sewage evaporative air cooler, comprising an equipment body, in which a plurality of groups of heat exchange coils are arranged, and the equipment body is also provided with an air inlet, a spray system and an air outlet, wherein the air inlet and the spray system are both located at the top of the equipment body, and the spray system comprises a plurality of guide pipes, the guide pipes are connected with a plurality of nozzles, and each guide pipe is connected with a sewage pipe. The present invention solves the problem of using fresh water as circulating supplementary water for evaporative air coolers, which causes waste of fresh water resources.

Description

Technical Field

[0001] The invention belongs to the field of equipment utilizing multiple media contact heat exchange, and in particular relates to a sewage evaporative air cooler. Background Art

[0002] The evaporative air cooler is a high-efficiency and energy-saving cooling device that integrates water cooling and air cooling, heat transfer and mass transfer processes and has the advantages of both. It has the advantages of compact structure, high heat transfer efficiency, low investment, low operating cost, easy installation and maintenance, etc., so it is widely used in oil refining, metallurgy, electricity, refrigeration, light industry and other fields. When using the evaporative air cooler, a large amount of water is required for evaporative heat exchange; however, fresh water resources are currently in short supply, and with the development of the economy, water pollution is serious, and fresh water resources are decreasing year by year. If fresh water is used as the cooling medium of the evaporative air cooler, it will cause a waste of fresh water resources. Based on this, the present application provides a sewage evaporative air cooler, which uses sewage as a cooling medium to reduce the waste of fresh water resources. Summary of the invention

[0003] The present invention aims to provide a sewage evaporative air cooler to solve the problem of using fresh water as a cooling medium of the evaporative air cooler, which causes waste of fresh water resources.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a sewage evaporative air cooler, comprising an equipment body, wherein a plurality of groups of heat exchange coils are arranged in the equipment body, and an air inlet, a spray system and an air outlet are also arranged on the equipment body. The air inlet and the spray system are both located at the top of the equipment body, and the spray system comprises a plurality of guide pipes, and a plurality of nozzles are connected to the guide pipes, and each guide pipe is connected to a sewage pipe.

[0005] The technical principle of this technical solution:

[0006] During operation, the process medium enters the heat exchange coil and flows inside the heat exchange coil. Then, the water pump is used to introduce sewage, and the sewage is introduced into the guide pipe through the sewage pipe, and then sprayed evenly on the outside of the heat exchange coil through the nozzle to form a water film. The industrial medium transfers heat to the water film outside the heat exchange coil, and the water film evaporates quickly to take away the heat, thereby cooling the industrial medium in the heat exchange coil. At the same time, the air introduced from the air inlet exchanges heat with the process medium in the heat exchange coil, thereby achieving double cooling of the process medium in the heat exchange coil.

[0007] Moreover, during the whole process, since the nozzle and the air inlet are both located above the heat exchange coil, the water flow and the air flow can flow downward synchronously, thereby improving the heat exchange effect on the heat exchange coil; at the same time, the air flow and the water flow flow downward synchronously, which will increase the potential energy of the downward flow and increase the force of flushing the outer wall of the heat exchange coil, thereby reducing the adhesion of impurities in the sewage to the heat exchange coil, and further reducing scaling.

[0008] Beneficial effects of this technical solution:

[0009] 1. This technical solution arranges the air inlet and the spray system at the top of the equipment body, so that the heat exchange coil is located below the air inlet and the spray system. Therefore, the air and water simultaneously flush the heat exchange coil downward, so that the process medium to be cooled can contact the heat exchange medium during the flow of the entire heat exchange coil, so that the heat exchange effect is better;

[0010] 2. The air and water flow downward synchronously, which can increase the potential energy of the heat exchange medium flowing downward, thereby improving the flushing effect of the sprayed sewage on the heat exchange coil and improving the heat exchange capacity;

[0011] 3. Connect the sewage pipe to the spray system and use sewage as a heat exchange medium to achieve the recycling of sewage and save fresh water resources. At the same time, since the air and water flow downward synchronously, the potential energy is increased, which can reduce the adhesion of impurities in the sewage on the heat exchange coil, thereby reducing the scaling on the heat exchange tube.

[0012] 4. Utilize the latent heat of sewage for evaporation heat exchange. What evaporates is water, and impurities in the sewage will not be taken away. Therefore, there will be no secondary pollution after discharge.

[0013] In summary, this technical solution can reduce the use of fresh water resources by using sewage as a cooling medium; and by setting a specific structure, it can reduce the attachment of impurities in sewage to the heat exchange coil, thereby reducing scaling on the heat exchange coil. In the use of evaporative air coolers, in order to reduce the waste of fresh water resources, water-saving methods are usually selected, and research is mainly conducted in this area to achieve cooling with less cooling water. However, sewage contains a lot of impurities, which are easy to scale on the heat exchange coil, thereby affecting the heat exchange effect. Therefore, technicians in this field usually do not think of using sewage as a heat exchange medium to save fresh water resources. The inventor of this application has broken through the traditional cognition of technicians in this field and gone the other way, using sewage as a cooling medium. And by setting the structure of the entire sewage evaporative air cooler, it is possible to reduce the attachment of impurities to the heat exchange coil, thereby not causing a large amount of scaling, and having little effect on heat exchange.

[0014] When the equipment is running, sewage is used as circulating cooling water and sprayed evenly on the heat exchange coil through the nozzle to form a water film, which evaporates quickly and takes away the heat; at the same time, the fan drives the air to pass through the heat exchange coil to exchange heat with the process medium. During the entire heat exchange process, the circulating water and wind flow downward, increasing the air volume and improving the flushing force on the outer wall of the heat exchange coil, thereby reducing the adhesion of impurities in the sewage on the heat exchange coil, thereby reducing scaling.

[0015] Furthermore, two cooling parts and an air duct between the two cooling parts are arranged in the main body of the device, and the air duct is connected with the air outlet.

[0016] Beneficial effect: The two cooling parts are connected by the air duct, so that the water vapor after heat exchange in the cooling part is discharged from the air duct along with the air, which plays a role of pressure relief. Moreover, the air duct can separate the two cooling parts, which is convenient for the two cooling parts to cool down separately.

[0017] Furthermore, the cooling parts include an upper cooling layer and a lower collecting layer, the air inlet, the spray system and the heat exchange coil are all located in the cooling layer, and a water collector is provided on the side of the collecting layer close to the air duct. The water collector includes two mounting strips fixed on the collecting layer and a plurality of corrugated plates evenly arranged on the two mounting strips, and an air guide channel is formed between adjacent corrugated plates; the corrugated plates are arranged to be inclined upward in the direction toward the air duct.

[0018] Beneficial effects: The collection layer can collect sewage after heat exchange for reuse. At the same time, the water collector can condense the water vapor generated after heat exchange and collect the water. After the water vapor enters the collection layer, it flows along the air guide channel formed between the corrugated plates with the air. Since the temperature in the collection layer is relatively low, the water vapor will gradually condense during this process and flow along the inclined corrugated plates, accumulating in the collection layer, which is convenient for subsequent recycling. The provision of corrugated plates can increase the contact area with water vapor, thereby improving the cooling and condensation effects of water vapor, thereby reducing the amount of water vapor discharged with the air and reducing water waste.

[0019] Furthermore, arc-shaped guide strips are fixed on the outer sides of the raised parts of the corrugated plates.

[0020] Beneficial effect: The guide strips are provided to guide the condensed liquid and increase the contact area with water vapor, thereby improving the condensation effect.

[0021] Furthermore, multiple flushing ports are provided on the opposite sides of the two cooling layers, and movable wind plates are detachably connected to the flushing ports; a high-pressure flushing system is provided in the air duct, and the high-pressure flushing system includes a mounting frame, a sliding frame vertically slidably connected to the mounting frame, and a high-pressure nozzle slidably connected to the sliding frame along its length direction, and a water pipe is connected to the high-pressure nozzle.

[0022] Beneficial effects: The flushing port can be set to flush the heat exchange coil and reduce the impurities attached to the outer wall of the heat exchange coil. The high-pressure flushing system can make the high-pressure nozzle slide along the mounting frame and the sliding frame, thereby realizing the movement of the position, and can perform flushing in multiple positions, thereby improving the flushing effect of the heat exchange coil. When not in use, the high-pressure flushing system is placed in the air duct to reduce space occupation and will not affect the operation of the entire evaporative air cooler.

[0023] Furthermore, the surface roughness of the heat exchange coil is Ra0.05-Ra0.2.

[0024] Beneficial effect: The surface roughness of the heat exchange coil is low, so it can reduce the adhesion of impurities in sewage and reduce scaling on the outer wall of the heat exchange coil.

[0025] Furthermore, an impeller is provided in the air outlet.

[0026] Beneficial effect: The impeller rotates to attract airflow, so that the airflow is quickly discharged from the air duct.

[0027] Furthermore, a water pump is connected to the bottom of the collection layer, and the water outlet of the water pump is connected to the guide pipe through a connecting pipe.

[0028] Beneficial effect: The water pump can extract the circulating water in the collection layer and introduce it into the connecting pipe, and then spray it out through the nozzle, so as to realize heat exchange of the process medium in the heat exchange coil again, and complete the recycling of sewage.

[0029] Furthermore, it also includes a medicine storage box, in which scale inhibitor is injected, and the medicine storage box is connected with the connecting pipe.

[0030] Beneficial effect: The scale inhibitor in the medicine storage box is introduced into the connecting pipe, and then enters the nozzle with the sewage through the connecting pipe for spraying, which can complete the cleaning of scale while cooling down. At the same time, the incompletely reacted scale inhibitor can also flow to the collection layer for storage, and then enter the nozzle through the connecting pipe, so as to achieve full use of the scale inhibitor and avoid waste.

[0031] Furthermore, each group of heat exchange coils includes a medium inlet, a medium outlet and a small coil located between the medium inlet and the medium outlet, the medium inlet is located at the top, the medium outlet is located at the bottom, and each small coil is hoisted in the cooling layer.

[0032] Beneficial effect: Multiple groups of heat exchange coils are independently arranged. When one group of heat exchange coils is damaged, it can be closed or disassembled separately without affecting other heat exchange coils.

[0033] Moreover, after the process medium to be cooled enters the heat exchange coil, it flows from top to bottom, so that the process medium to be cooled comes into contact with the water and air with the lowest temperature when the temperature is the highest, thereby achieving rapid heat exchange. In addition, the process medium to be cooled can come into contact with water and air throughout the entire flow process, thereby performing continuous heat exchange and improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0035] Figure 2It is a left side view of the heat exchange coil in Example 1 of the present invention;

[0036] Figure 3 It is a left side view of the water collector in Embodiment 1 of the present invention;

[0037] Figure 4 It is a schematic structural diagram of the inner rotating shaft and the blocking plate of the left side of the collection layer in Example 2 of the present invention;

[0038] Figure 5 for Figure 3 Enlarged view of part A. DETAILED DESCRIPTION

[0039] The following is further described in detail through specific implementation methods:

[0040] The figure marks in the drawings of the specification include: equipment body 1, cooling part 11, cooling layer 111, collection layer 112, air duct 12, air inlet 13, flushing port 14, movable wind plate 141, water collector 15, mounting strip 151, corrugated plate 152, guide strip 153, air outlet 16, impeller 161, heat exchange coil 2, medium inlet 21, medium outlet 22, small coil 23, guide pipe 3, nozzle 31, water pump 4, high-pressure nozzle 5, dosing box 6, blocking plate 7, guide outlet 71, rotating shaft 8, material guide channel 81, through groove 82, collecting plate 9, plate body 91, material guide groove 911, block 912, baffle 913, push block 914, anti-fall-off block 915, filter screen 92.

[0041] Embodiment 1:

[0042] Sewage evaporative air cooler, basically as attached Figure 1 As shown, the device body 1 includes two cooling parts 11 and an air duct 12 between the two cooling parts 11. The top of the device body 1 is provided with an air outlet 16 connected to the air duct 12, and an impeller 161 is provided in the air outlet 16. The cooling part 11 includes an upper cooling layer 111 and a lower collecting layer 112. The cooling layer 111 is connected to the collecting layer 112, and the cooling layer 111 is isolated from the air duct 12. A plurality of heat exchange coils 2 are provided in the cooling layer 111. In this embodiment, three groups of heat exchange coils 2 are arranged horizontally, and the three groups of heat exchange coils 2 are independently provided. Figure 2 As shown, the heat exchange coil 2 includes a medium inlet 21, a small coil 23 and a medium outlet 22 arranged in sequence from top to bottom, and the two ends of the small coil 23 are respectively connected to the medium inlet 21 and the medium outlet 22. The surface roughness of the heat exchange coil 2 is Ra0.05-Ra0.2, and the preferred surface roughness in this embodiment is Ra0.1.

[0043] The top of the cooling layer 111 is also provided with an air inlet 13 and a spray system. When in use, the air inlet 13 is connected to the induced draft fan so that the air generated by the induced draft fan is introduced into the cooling layer 111 through the air inlet 13. The air outlet end of the air inlet 13 faces downward, which can realize the flow of air from top to bottom. The spray system includes a plurality of guide pipes 3 arranged horizontally, both ends of the guide pipes 3 are closed, and the guide pipes 3 are arranged side by side in a direction perpendicular to the paper surface. The number of guide pipes 3 is set according to actual needs. In this embodiment, 3 guide pipes are set. The bottom end of the guide pipe 3 is provided with a plurality of nozzles 31, and the liquid outlet direction of the nozzle 31 is downward. The spray system also includes a sewage pipe connected to the guide pipe 3. When in use, the sewage pipe is connected to the liquid inlet pump, so that the sewage can be introduced into the cooling layer 111 for use.

[0044] A plurality of flushing ports 14 are provided on opposite sides of the cooling layers 111 of the two cooling parts 11. The number of flushing ports 14 is selected according to actual needs. In this embodiment, three flushing ports 14 are provided. The flushing ports 14 are all detachably connected with movable air plates 141. The detachable connection between the movable air plates 141 and the flushing ports 14 can be threaded or clamped. In this embodiment, threaded connection is selected.

[0045] The water collector is provided on the opposite side of the collection layer 112. Figure 3 As shown, the water collector 15 includes a mounting bar 151 fixed to the front and rear sides of the collection layer 112 and a plurality of corrugated plates 152 fixed between the two mounting bars, and an air guide channel is formed between adjacent corrugated plates 152. The corrugated plates 152 are evenly arranged in the vertical direction, and the corrugated plates 152 are tilted upward in the direction close to the air channel. The outer side of the convex part of the corrugated plate 152 is fixed with an arc-shaped guide bar 153.

[0046] The bottom of the collection layer 112 is connected with a water outlet pipe, the water outlet pipe is connected with a water pump 4, the water outlet end of the water pump 4 is connected with a connecting pipe, and one end of the connecting pipe away from the water pump 4 is connected with the guide pipe 3.

[0047] The air duct 12 is also provided with a high-pressure flushing system, which includes a mounting frame, a sliding frame vertically slidably connected to the mounting frame, and a mounting block horizontally slidably connected to the sliding frame. Two high-pressure nozzles 5 are fixed on the mounting block, one of which sprays upward, and the other sprays downward.

[0048] It also includes a water pipe connected to the two high-pressure nozzles 5 respectively. When in use, the water pipe is connected to the water pump to guide water into the high-pressure nozzles 5, thereby flushing the heat exchange coil 2.

[0049] It also includes two dosing devices, each of which includes a drug storage box, and both drug storage boxes are connected with a drug dosing pipe, which is connected with the connecting pipe. The drug dosing box 6 is filled with scale inhibitor, and a liquid adding port is also provided on the drug dosing box 6. The drug storage box is provided with a drug dosing pump connected with the drug dosing pipe.

[0050] The specific implementation process is as follows:

[0051] The process medium to be cooled is introduced from the medium inlet 21 of the heat exchange coil 2 and flows downward along the heat exchange coil 2. During the flow of the process medium to be cooled, the induced draft fan and the liquid inlet pump are started, so that the induced draft fan introduces cooling air into the air inlet 13, and the air flows downward; the liquid inlet pump introduces sewage into the guide pipe 3 through the sewage pipe, and also flows downward at the spraying point of the nozzle 31. The sprayed sewage forms a water film on the outer wall of the heat exchange coil 2, and the process medium in the heat exchange coil 2 transfers heat to the water film, causing the water film to evaporate rapidly and cool the process medium. After the air contacts the heat exchange coil, heat is also exchanged to achieve cooling of the process medium.

[0052] In this process, since both the air and sewage flow from top to bottom, they can continuously exchange heat with the process medium in the heat exchange coil 2 during the flow, thereby improving the cooling effect.

[0053] Since the air and sewage flow downward synchronously, the potential energy of the downward flow is greater. When impurities in the sewage adhere to the heat exchange coil 2, they will be washed away by the subsequent air and sewage to reduce the amount of adhesion. In addition, since the potential energy of the sewage flowing downward is large, coupled with the small surface roughness of the outer wall of the heat exchange coil 2, the amount of impurities attached to the heat exchange coil 2 is small, which can reduce the scaling of the outer wall of the heat exchange coil 2.

[0054] After the sewage and air flow downward and exchange heat, they will gradually flow into the collection layer 112 and be collected by the collection layer 112. When the air pressure in the collection layer 112 is relatively high, the air and the water vapor generated by the heat exchange will flow along the air guide channel formed between the corrugated plates 152, enter the air duct 12, and then flow upward along the air duct 12 and be discharged from the air outlet 16. In this process, since the temperature in the collection layer 112 is lower than that in the cooling layer, and the water vapor will condense after contacting the corrugated plates 152 to form liquid, the droplets flow along the inclined corrugated plates 152 and enter the collection layer 112 for collection, which is convenient for subsequent recycling.

[0055] When the sewage after heat exchange is accumulated in the collection layer 112, since the collection layer 112 is far away from the heat exchange coil 2, the sewage accumulated in the collection layer 112 will gradually cool down. After a certain amount of sewage is accumulated, the pump 4 is started, and the sewage in the collection layer 112 is introduced into the guide pipe 3 through the pump 4, and then sprayed out from the nozzle 31, so that the sewage can be reused.

[0056] When the water pump 4 is started, the dosing pump is started at the same time, so that the dosing pump introduces the scale inhibitor into the connecting pipe, and then the scale inhibitor enters the liquid guide pipe synchronously with the sewage, and then is sprayed out. The scale inhibitor is sprayed on the outer wall of the heat exchange coil 2, which can reduce scaling of the heat exchange coil 2.

[0057] After the evaporative air cooler has been used for a long time, the movable air plate 141 is opened, and the high-pressure nozzle 5 is moved so that the high-pressure nozzle 5 extends into the flushing port 14, and the water pump is turned on to draw fresh water to flush the heat exchange coil 2, so that the impurities and soft scale on the outer wall of the heat exchange coil 2 can be flushed away, and the scale on the outer wall of the heat exchange coil 2 can be prevented from being accumulated for a long time. By moving the sliding frame vertically and moving the high-pressure nozzle 5 horizontally along the sliding frame, the position of the high-pressure nozzle 5 can be adjusted, thereby increasing the flushing range and completing the full cleaning of the heat exchange coil 2.

[0058] Embodiment 2:

[0059] The difference between Example 2 and Example 1 is that Figure 4 As shown, in this embodiment, a filtering device is arranged in the collection layer 112, and the filtering device includes a rotating shaft 8 arranged in the collection layer 112, and a material guide channel 81 is provided in the rotating shaft 8. The material guide channel 81 is connected to the outside, the guide channel is conical, and the large diameter end of the guide channel is connected to the outside.

[0060] The rotating shaft 8 passes through the rear side of the collecting layer 112, and the rotating shaft 8 is rotatably connected to the collecting layer 112. A plurality of collecting plates 9 are evenly distributed on the outer wall of the rotating shaft 8, and the number of the collecting plates 9 can be selected according to actual needs. In this embodiment, 5 collecting plates 9 are provided. The collecting plates 9 each include a U-shaped plate body 91 and a filter screen 92 fixed to the top of the upper vertical portion of the plate body 91, and the upper surface of the filter screen 92 is flush with the upper surface of the plate body 91.

[0061] The specific structure of the collecting plate 9 is illustrated by taking the collecting plate 9 on the right side as an example. An L-shaped material guide groove 911 is arranged in the plate body 91, and the left end of the material guide groove 911 passes through the plate body 91; a through groove 82 connecting the material guide groove 911 and the material guide channel 81 is arranged on the rotating shaft 8; the top end of the material guide groove 911 passes through the vertical part on the right side of the plate body 91.

[0062] Combination Figure 5As shown, a stopper 912 is also fixed to the right end of the plate body 91, and a sliding hole is provided at the bottom of the stopper 912, and a baffle 913 is slidably connected in the sliding hole, and the baffle 913 can cover the right end of the guide groove, and the baffle 913 is in contact with the upper surface of the plate body 91. A push block 914 is fixed to the left end of the baffle 913, and a spring is provided between the push block 914 and the stopper 912, and the two ends of the spring are respectively welded to the right end surface of the push block 914 and the left end surface of the stopper 912; an anti-slip block 915 is fixed to the right end of the baffle 913.

[0063] A baffle plate 7 is provided on the collection layer 112, and the outer periphery of the baffle plate 7 is welded to the inner wall at the top of the collection layer 112. A guide outlet 71 is provided on the baffle plate 7. The guide outlet 71 is located on the side of the baffle plate 7 away from the air duct 12, and the guide outlet 71 is inclined from top to bottom toward the direction close to the air duct 12.

[0064] A first magnetic block is fixed to the bottom of the collection layer 112, and a second magnetic block that repel each other with the first magnetic block is provided on the anti-dropping block 915.

[0065] The specific implementation process is as follows:

[0066] During the operation of the sewage evaporative air cooler, after heat exchange with the process medium to be cooled, the sewage and air are blocked by the blocking plate 7, and then introduced into the collection layer 112 through the outlet 71 on the blocking plate 7. In this process, due to the collection of air and sewage through the outlet 71, the flow rate is relatively large, and the outlet 71 is inclined, which can make the air and sewage impact the collection plate 9, and then make the collection plate 9 rotate, thereby driving the rotating shaft 8 to rotate, and realizing the continuous rotation of the collection plate 9 on the entire rotating shaft 8. In addition, due to the position setting of the outlet 71, the rotating shafts 8 in the two collection layers 112 will rotate relative to each other, and the collection layer 112 on the left will rotate clockwise, and the collection layer 112 on the right will rotate counterclockwise. This rotation method can prevent the collected sewage from being lifted up and entering the air duct 12 through the outlet 71.

[0067] The sewage after heat exchange will contain impurities. At the same time, some soft scale will be formed on the outer wall of the heat exchange coil 2 after long-term use. When in use, the soft scale will flow with the air and sewage under the flushing of air and water. In order to prevent impurities and soft scale from adhering to the heat exchange coil 2 when the sewage is circulated, resulting in an increase in the scaling of the heat exchange coil 2, the impurities are filtered and collected by setting a collection layer 112.

[0068] Air and water impact on the filter screen 92 on the collection plate 9, and the impurities and soft scale are filtered through the filter screen 92, and the filtered water flows to the bottom of the collection layer 112 through the gap between the filter screen 92 and the plate body 91, and then the impurities and soft scale remain on the filter screen 92. As the rotating shaft 8 and the collection plate 9 rotate, the collection plate 9 gradually tilts, so the impurities and soft scale will move along the tilted filter screen 92. In the process of the collection plate 9 tilting, the baffle 913, the push block 914 and the anti-slip block 915 will gradually slide down under the action of gravity, and squeeze the spring, so that the baffle 913 slides through the blocked material guide trough 911, so that the impurities and soft scale enter the material guide trough 911.

[0069] As the rotating shaft 8 and the collecting plate 9 continue to rotate, the collecting plate 9 with collected impurities will approach the bottom surface of the collecting layer 112. During this process, the first magnetic block and the second magnetic block gradually approach each other, so that the first magnetic block repels the second magnetic block. Therefore, the baffle 913 slides upward to close the material guide trough 911 to prevent impurities and soft scale from falling out, and at the same time prevent sewage from entering the material guide trough 911.

[0070] As the rotating shaft 8 and the collecting plate 9 continue to rotate, the collecting plate 9 gradually moves away from the sewage collected in the collecting layer 112. When the collecting plate 9 tilts again, the impurities and soft scale in the guide groove 911 enter the guide channel 81 along the guide groove 911, flow along the guide channel 81, and are discharged. The amount of impurities in the sewage in the collecting layer 112 is reduced, thereby reducing the amount of scaling on the heat exchange coil 2 caused by recycling the sewage in the collecting layer 112.

[0071] For those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of this patent and the practicality of the patent.

Claims

1. A sewage evaporative air cooler includes a device body, in which a plurality of heat exchange coils are arranged, and the device body is also provided with an air inlet, a spray system and an air outlet, and is characterized in that: The air inlet and the spray system are both located at the top of the equipment body. The spray system includes a plurality of guide pipes, and the guide pipes are connected to a plurality of nozzles, and each guide pipe is connected to a sewage pipe; Two cooling parts and an air duct between the two cooling parts are arranged in the main body of the device, and the air duct is connected with the air outlet; The cooling part includes an upper cooling layer and a lower collecting layer. The air inlet, the spray system and the heat exchange coil are all located in the cooling layer. A water collector is provided on the side of the collecting layer close to the air duct. The water collector includes two mounting bars fixed on the collecting layer and a plurality of corrugated plates evenly arranged on the two mounting bars. An air guide channel is formed between adjacent corrugated plates. The corrugated plates are all arranged to tilt upward in the direction toward the air duct. A filter device is arranged in the collection layer, and the filter device includes a rotating shaft arranged in the collection layer, a material guide flow channel is arranged in the rotating shaft, the material guide flow channel is connected with the outside, the material guide flow channel is tapered, and the large diameter end of the material guide flow channel is connected with the outside; The rotating shaft passes through the rear side of the collecting layer, and the rotating shaft is rotatably connected to the collecting layer. A plurality of collecting plates are evenly distributed on the outer wall of the rotating shaft, and 5 collecting plates are provided; each collecting plate includes a U-shaped plate body and a filter screen fixed on the top of the vertical part of the plate body, and the upper surface of the filter screen is flush with the upper surface of the plate body; An L-shaped material guide groove is arranged in the plate body, and the left end of the material guide groove penetrates the plate body; a through groove is arranged on the rotating shaft to connect the material guide groove and the material guide channel; the top end of the material guide groove penetrates the vertical part on the right side of the plate body, A stopper is also fixed to the right end of the plate body, a sliding hole is provided at the bottom of the stopper, a baffle is slidably connected in the sliding hole, the baffle covers the right end of the guide groove, the baffle is attached to the upper surface of the plate body, a push block is fixed to the left end of the baffle, a spring is provided between the push block and the stopper, and the two ends of the spring are respectively welded to the right end face of the push block and the left end face of the stopper; an anti-dropping block is fixed to the right end of the baffle; A blocking plate is arranged on the collection layer, the outer periphery of the blocking plate is welded to the inner wall of the top of the collection layer, and a guide outlet is arranged on the blocking plate, the guide outlet is located on the side of the blocking plate away from the air duct, and the guide outlet is inclined from top to bottom toward the direction close to the air duct; A first magnetic block is fixed at the bottom of the collecting layer, and a second magnetic block which repel each other with the first magnetic block is arranged on the anti-falling block.

2. The sewage evaporative air cooler according to claim 1, characterized in that: The outer sides of the raised parts of the corrugated plates are all fixed with arc-shaped guide strips.

3. The sewage evaporative air cooler according to claim 2 is characterized in that: A plurality of flushing ports are provided on the opposite sides of the two cooling layers, and movable wind plates are detachably connected to the flushing ports; a high-pressure flushing system is provided in the air duct, and the high-pressure flushing system includes a mounting frame, a sliding frame vertically slidably connected to the mounting frame, and a high-pressure nozzle slidably connected to the sliding frame along the length direction of the sliding frame, and a water pipe is connected to the high-pressure nozzle.

4. The sewage evaporative air cooler according to claim 3 is characterized in that: The surface roughness of the heat exchange coil is Ra0.05~Ra0.

2.

5. The sewage evaporative air cooler according to claim 4 is characterized in that: An impeller is arranged in the air outlet.

6. The sewage evaporative air cooler according to claim 5, characterized in that: The bottom of the collecting layer is connected with a water pump, and the water outlet of the water pump is connected with the guide pipe through a connecting pipe.

7. The sewage evaporative air cooler according to claim 6, characterized in that: It also comprises a medicine storage box, in which scale inhibitor is injected, and the medicine storage box is connected with the connecting pipe.

8. The sewage evaporative air cooler according to claim 7, characterized in that: Each set of heat exchange coils includes a medium inlet, a medium outlet and a small coil located between the medium inlet and the medium outlet. The medium inlet is located at the top, the medium outlet is located at the bottom, and each small coil is hoisted in the cooling layer.

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