KR20140042096A - Pre-processing device for removing contaminants of the heat exchanger using waste water heat source - Google Patents

Abstract

The present invention relates to a preprocessing apparatus to remove contaminants in a heat pump type heat exchanger using waste water heat source and, more specifically, to a preprocessing apparatus to remove contaminants in a heat pump type heat exchanger using waste water heat source which filters the contaminants contained in the drained water supplied to the heat exchanger to prevent the formation of the contaminants in the heat pump type heat exchanger using waste water heat included in the waste water discharged from farms, saunas, and industries. In the heat pump type heat exchanger using the waste water heat source to recycle heat included in the waste water discharged from a water tank in the fish farm; an automatic device to remove contaminants using a washing ball is installed between the water tank and a plate type heat exchanger, and a filter to drain water is connected and installed between the water tank and the automatic device to remove the contaminants.

Description

Pre-processing device for removing contaminants of the heat exchanger using waste water heat source}

The present invention relates to a pretreatment apparatus for removing contaminants from a wastewater heat source heat pump heat exchanger, and more particularly, to a heat pump type heat exchanger using wastewater heat contained in wastewater discarded in aquaculture farms, saunas, and industries as heat source water. The present invention relates to a pretreatment apparatus for removing contaminants of a wastewater heat source heat pump heat exchanger to filter contaminants contained in drainage water flowing into a heat exchanger to prevent the formation of the same.

There are many industrial sectors that use wastewater heat contained in the wastewater as a heat source for heat pumps, but also farms, saunas, and industries. However, in the case of aquaculture farms, in general, fish raised in farms are sensitive to water temperature. Therefore, when the water temperature in winter is lowered, there is a concern that growth, malformed fish, and survival rate are lowered. Also, the resistance of the fish is weakened, and when the water temperature is raised in the future, there is a high risk of various diseases.

Therefore, it is very important to maintain proper water temperature in the management of land farms using seawater.

Conventionally, most farms have used diesel or bunker oil boilers to raise the temperature of the seawater to an appropriate temperature (about 19 to 22 ℃) when the water temperature decreases during the winter. The situation is a big burden on fish farming.

In order to solve this problem, recently, a drainage heat recovery system for recovering heat from the drainage of about 19-22 ° C. discharged to the sea from the aquaculture tank is used, and a plate heat exchanger is mainly used for this drainage heat recovery system.

In other words, by using the heat of the drainage discharged from the fish farm tank through the plate heat exchanger to increase the temperature of the sea water flowing into the fish farm tank, it is possible to significantly reduce the oil cost used to increase the temperature of the sea water in winter.

However, the plate heat exchanger used in such a drainage heat recovery system has excellent heat transfer performance at the beginning of operation, that is, when no contamination is generated in the heat transfer plate, but the heat transfer plate is contaminated as the use period has elapsed. .

In particular, in the case of plate heat exchangers used in aquaculture farms, the contamination rate of the heat transfer plate is very fast due to the protein, mucus, fish carcasses, and food waste contained in the drainage discharged from the water tank, and thus the heat transfer performance is sharply degraded. .

In the prior art for solving these problems, Korean Patent Publication No. 10-0941375 discloses a drainage heat recovery system for onshore seawater farms using a plate heat exchanger, the main technical configuration of which is shown in FIG. 3) the primary tank (10) is installed in the suction end of the drain (1) to remove the large floats generated in the dissolution form; A pre-treatment automatic cleaning filter (30) for preventing the blockage phenomenon and the attachment of efficiency-lowering substances by depositing the sludge contained in the drainage by receiving the wastewater filtered by the primary strainer (10) by the operation of the drainage recovery pump (20); A plate-type titanium heat exchanger (80) for receiving the filtered drainage and seawater from the pretreatment automatic washing filter (30) to heat and drain the drainage and the seawater; And a spray cleaning device (50) provided at a line of the pretreatment automatic cleaning filter (30) to clean the contaminants filtered by the pretreatment automatic cleaning filter (30) and to clean the inside of the plate-type titanium heat exchanger (80). Drain inlet valve (60), differential pressure gauge (61) and the drain inlet valve (60) provided in the drain inlet line (21) connected between the drain recovery pump 20 and the pretreatment automatic washing filter (30) The bypass valve 62 provided in the drainage inflow line 21 between the pumps 20, the drain valve 63 provided below the outer case 33 of the pretreatment automatic cleaning filter 30, and the pretreatment automatic cleaning. And an automatic operation control device 70 for controlling the operation of the filtration drain valve 66 provided in the filtration drain line 65 connected between the filter 30 and the plate-type titanium heat exchanger 80. It is characterized by.

However, the above configuration requires cleaning the inside of the heat exchanger by spraying the washing water into the heat exchanger. Therefore, in order to clean the heat transfer plate, the cleaning operation must be performed after the system is stopped. As a separate chemical is used for cleaning, there is a problem that there is a high risk of marine pollution, which is a problem in aquaculture.

In recent years, most of the land-based fish farms use the heat pump that uses the drainage from the aquaculture tank instead of the boiler to heat the seawater taken from the sea to a temperature suitable for aquaculture. Excretion, feed dregs, meat secrets, etc. are included so that they enter the heat pump to contaminate the heat source side heat exchanger, so the performance of the heat pump is drastically degraded.

Therefore, in order to secure the performance of the heat pump, it is most important to remove the pollution generated in the heat source side heat exchanger.

The present invention has been made to solve the above problems, an object of the present invention is to drain the waste water by using the drain filter to filter out the foreign matter contained in the drain discharged from the fish tank to the plate heat exchanger The present invention provides a pretreatment apparatus for removing contaminants of a wastewater heat source heat pump heat exchanger that minimizes contamination of a plate heat exchanger by foreign substances included in the plate and cleans the foreign substances filtered by a drain filter by a simple operation.

According to an aspect of the present invention,

In the heat pump heat exchanger using a wastewater heat source to recycle the heat contained in the drainage from the fish tank, an automatic decontamination device using a cleaning ball is installed between the fish tank and the plate heat exchanger, the fish farm A drain filter is connected between the water tank and the automatic decontamination device.

At this time, the drain filter is configured to include a case in which a rotating shaft is installed in the center and drainage is introduced and discharged, a cylindrical sieve provided on the inside of the case to be installed on the rotating shaft, and a washing device for washing the cylindrical sieve. It is characterized by.

Here, the case has a drainage inlet for the drainage discharged from the fish tank, inlet drainage discharged drainage, foreign matter accumulated outside the cylindrical sieve and foreign drain discharged drainage and foreign matter accumulated in the cylindrical sieve and An internal drain for discharging the drainage is formed.

At this time, the differential pressure sensing device is connected between the drainage inlet and the drain outlet.

In addition, between the upper and lower end of the cylindrical sieve and the inner wall of the case is characterized in that the upper blocking plate and the lower blocking plate is installed.

In addition, a handle is provided at an upper end of the rotating shaft, and a shaft rod device is fitted to the rotating shaft located at an upper outer side of the case.

On the other hand, the washing device is characterized in that it comprises a first washing water supply pipe is inserted into one wall surface of the case, and a plurality of first spray nozzles installed in the first washing water supply pipe.

At this time, the cylindrical sieve is characterized in that it is arranged on the rotating shaft to be eccentric to one side.

In addition, the cleaning device is characterized in that consisting of a brush inserted into the installation of the case, and a brush moving member connected to the brush to move the brush back and forth.

The washing apparatus may include a second washing water supply pipe inserted into the rotating shaft and a plurality of second spray nozzles connected to the second washing water supply pipe to protrude outward of the rotating shaft.

According to the present invention, it is possible to minimize the contamination of the plate heat exchanger by the foreign substances contained in the drainage by first filtering out the foreign matter contained in the drainage discharged from the fish tank to the plate heat exchanger using a drainage filter In addition, the drainage heat recovery system is prevented from malfunctioning and has an excellent effect of cleaning foreign substances filtered by the drainage filter by a simple operation.

1 is a view schematically showing a drainage heat recovery system for onshore seawater farms using a conventional plate heat exchanger.
Figure 2 is a schematic view of aquaculture plant feedwater temperature control system including a pretreatment apparatus for removing contaminants of a wastewater heat source heat pump heat exchanger according to the present invention.
Figure 3 is a cross-sectional view showing in detail the drain filter of the pretreatment apparatus for removing contaminants of the waste heat source heat pump heat exchanger according to the present invention.
Figure 4 (a), (b) is a view schematically showing a cylindrical strainer of the waste filter of the present invention shown in FIG.
5A and 5B are plan views schematically showing an embodiment of the waste water filter of the present invention shown in FIG. 3.
Figure 6 is a cross-sectional view showing in detail another embodiment of the waste filter of the pretreatment apparatus for removing contaminants of the waste heat source heat pump heat exchanger according to the present invention.
7 (a) and 7 (b) are plan views schematically showing a state of use of the waste filter shown in FIG. 6;
Figure 8 is a cross-sectional view showing another embodiment of the wastewater filter in the pretreatment apparatus for removing contaminants of the wastewater heat source heat pump heat exchanger according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail preferred embodiments of the pretreatment apparatus for removing contaminants of the waste heat source heat pump heat exchanger according to the present invention.

2 is a view schematically showing a farm water supply temperature control system including a pretreatment apparatus for removing contaminants of a wastewater heat source heat pump heat exchanger according to the present invention, and FIG. 3 is a wastewater heat source heat pump heat exchanger according to the present invention. Figure 4 is a cross-sectional view showing in detail the water filter of the pretreatment for removing contaminants, Figure 4 (a), (b) is a view schematically showing a cylindrical strainer of the water filter of the present invention shown in Figure 3, (a), (b) is a plan view schematically showing an embodiment of the waste water filter of the present invention shown in Figure 3, Figure 6 is a drainage of the pretreatment apparatus for removing contaminants of the waste heat source heat pump heat exchanger according to the present invention Another embodiment of the filter is a cross-sectional view showing in detail, Figure 7 (a), (b) is a plan view schematically showing the use state of the drain filter shown in Figure 6, Figure 8 A cross-sectional view showing another embodiment of a wastewater filter in a pretreatment apparatus for removing contaminants of a wastewater heat source heat pump heat exchanger according to the present invention.

The present invention is to filter the contaminants contained in the drainage flow into the heat exchanger in order to prevent the formation of contaminants in the heat pump type heat exchanger using the waste water heat contained in the waste water discarded in the farm, sauna, industry, etc. as heat source water A pretreatment apparatus for removing contaminants from a wastewater heat source heat pump heat exchanger is described. First, the farmwater feedwater temperature control system (1) including a drainage heat recovery system for aquaculture farms to which the present invention is representatively applied will be described next. Is the same as

The water supply temperature control system for aquaculture tank farms (1) warms the seawater supplied to the fish farm tank (500) using the drainage from the fish tank (500) to a temperature suitable for fish farming (about 19 to 22 ℃) It is to be able to supply, the configuration is largely as shown in Figure 2, the sea water pump 200, plate heat exchanger 300, heat pump 400, fish farm water tank 500, drain tank 600 and drain pump And 700.

In more detail, the sea water pump 200 is connected to the plate heat exchanger 300 through the sea water supply pipe 220 to lift the sea water supplied to the fish tank 500 to supply to the plate heat exchanger (300) To play a role, the sea water supply pipe 220 is installed so that the sea water filter 210 is installed to filter foreign matter contained in the sea water pulled up by the sea water pump 200.

Next, the plate heat exchanger 300 serves to primarily warm the seawater supplied through the seawater supply pipe 220. In this case, the drainage discharged from the fish tank 500 is used as a medium for warming the seawater. do.

That is, the plate heat exchanger 300 is a seawater inlet 310 connected to the seawater supply pipe 220 and the drainage inlet 330 connected to the drain inlet pipe 110 to be described later are opposite to each other It is formed in the direction, the low temperature (about 3 ~ 8 ℃) seawater flowing through the seawater inlet 310 and the high temperature (about 19 ~ 22 ℃) flowing through the inlet 330 is a plurality of heat transfer plate The heat exchange is made through the heat exchange while passing through the sea water and the drain is discharged through the sea water outlet 320 and the drain outlet 340 formed in the plate heat exchanger 300, respectively.

At this time, the drainage after the heat exchange is discharged directly to the sea through the drain discharge pipe 170, or if the sea water heat pump (not shown) is installed as a heating medium of the sea water heat pump once again to the sea Discharged.

In addition, the sea water is heat exchanged is supplied to the secondary heating device, that is, the heat pump 400 is secondly warmed to a temperature suitable for fish farming and then sent to the fish tank 500.

That is, the heat pump 400 is installed between the plate heat exchanger 300 and the fish farm tank 500 according to the type of fish to receive the seawater after heat exchange is discharged through the seawater outlet 320 After heating to an appropriate temperature serves to supply to the fish tank (500).

Next, the fish farm 500 is warmed primarily in the plate heat exchanger 300, and is secondly heated by the heat pump 400 to serve to breed fish by receiving seawater at a temperature suitable for aquaculture. , The seawater supplied in this way is used for rearing fish for a predetermined time and then discharged and supplied to the sump 600.

That is, the drainage tank 600 serves to temporarily store the drainage discharged from the fish farm water tank 500, the filter tank 610 is installed in the drainage tank 600, feed waste, meat carcasses contained in the drainage It is designed to filter out relatively large foreign substances such as feces and secretions.

As such, the wastewater filtered by the filter net 610 is moved by the drain pump 700 and supplied to the plate heat exchanger 300 to be used for warming work of the seawater flowing into the plate heat exchanger 300, and the land water tank type. Aquaculture feedwater temperature control system 1 will repeat this cycle.

On the other hand, the pretreatment apparatus for removing contaminants of the wastewater heat source heat pump heat exchanger according to the present invention to prevent the contaminants from being formed in the plate heat exchanger 300 of the above-described water tank temperature control system for land fish farms. In order to filter out contaminants contained in the drainage flow into the plate heat exchanger 300, the configuration is largely fish tank 500, drainage tank 600, drainage pump 700, plate type It comprises a heat exchanger 300, automatic decontamination apparatus 100 and the drain filter (800).

In more detail, the automatic decontamination apparatus 100 is installed between the plate heat exchanger 300 and the fish tank 500 as shown in Figure 2 of the drainage to be moved by the drain pump 700 A plurality of cleaning balls are introduced into the plate heat exchanger 300 using the flow to automatically remove contaminants formed on the surface by the collision force with the surface of the heat exchanger plate of the plate heat exchanger 300. It is.

That is, the present invention mainly uses the wastewater discharged from the sea by the sea water pump 200 and the fish farm 500 to serve as the heating medium and the heating medium, respectively, protein, mucus, The contamination rate of the heat transfer plate proceeds very rapidly by foreign bodies such as fish carcasses and feed dregs, and when the plate heat exchanger 300 is contaminated, heat exchange is not performed well, so that the seawater discharged from the plate heat exchanger 300 is less heated. Since the heat pump 400 is introduced into the heat pump 400 in a state, the amount of heating in the heat pump 400 increases, and thus the amount of energy required increases. Therefore, the automatic decontamination apparatus 100 using the cleaning balls is used. By periodically removing the contaminants formed on the surface of the heat transfer plate, it is possible to solve the above problems.

As such, the automatic decontamination apparatus 100 using the cleaning ball 150 is a drain inlet pipe 110, drain discharge pipe 170, cleaning ball circulation pipe 180, cleaning ball separator 120, cleaning ball It may be configured to include a recovery unit 130, a pump 140 and an ejector 160, this configuration is a structure that has been conventionally used for the cleaning of the plate heat exchanger, so a detailed description thereof will be omitted.

Next, the drain filter 800 is installed between the fish tank 500 and the automatic decontamination apparatus 100, as shown in Figure 2, from the fish tank 500 to the drain tank 600 By filtering the foreign matter contained in the drain discharged through the drain inlet pipe 110 serves to purify the water flowing into the plate heat exchanger (300).

That is, although the foreign substances included in the drainage are primarily filtered through the filtering net 610 provided in the drainage tank 600, the filtering net 610 may filter only the foreign substances having a relatively large size included in the drainage. It is configured to, and between the fish tank 500 and the automatic decontamination device 100 in more detail, because it is practically impossible to filter all the large amount of foreign substances discharged from the fish tank 500 through the filter net 610 By installing a separate drain filter 800 between the drain pump 700 and the automatic decontamination apparatus 100 to further filter out the foreign matter contained in the drainage to determine the amount of foreign matter introduced into the plate heat exchanger (300). It is designed to be minimized.

In more detail, as shown in FIG. 3, the drain filter 800 includes a case 810 having a rotating shaft 820 installed at a central portion thereof, a cylindrical sieve 830, and a washing device 840. .

First, the case 810 serves as a body portion to filter foreign matter while the drainage moving by the driving of the drain pump 700 passes, so that the cylindrical sieve 830 is rotatably installed at the center thereof. The rotating shaft 820 is provided in the up and down directions.

In this case, the case 810 includes a drain inlet 812, a drain outlet 814, an external drain 816, and an internal drain 818, and the drain inlet 812 is a case 810. Is formed on one side of the fish tank 500 so that the drain discharged through the drain tank 600 can be introduced into the case 810, the drain outlet 814 is the other side of the case, that is, drainage It is formed on the opposite side of the inlet 812 to serve to allow the drainage introduced through the drain inlet 812 to be discharged.

Next, the external drain 816 is formed at the bottom of the case 810 to serve to discharge the foreign matters filtered by the cylindrical strainer 830 together with the drainage, and the internal drain 818 is a case ( It is formed in the lower portion of the 810 to serve to discharge the foreign matter and drainage located in the inner side of the cylindrical sieve 830 to the outside.

In this case, first to fourth valves 812a, 814a, 816a, and 818a are connected to the drain inlet 812, the drain outlet 814, the external drain 816, and the internal drain 818, respectively. It is configured to control the flow.

On the other hand, as shown in Figure 3, the differential pressure sensing device 850 is installed between the drain inlet 812 and the drain outlet 814, the differential pressure detecting device 850 is the drain inlet 812 By measuring the differential pressure between the outlet and the outlet 814 serves to adjust the operation of the washing device 840 to be described later or automatically.

In more detail, as described above, the differential pressure detecting device 850 is installed between the drain inlet 812 and the drain outlet 814, and the pressure of the drain flowing through the drain inlet 812 and the drain outlet. The differential pressure between the pressure of the drain discharged through 814 is measured. When the measured differential pressure is equal to or less than a predetermined reference value, the operation of the washing device 840 to be described below is automatically performed, and the measured differential pressure is equal to a predetermined reference value. If the excess of the washing device 840 is no longer automatically made by the control is to be made manually so that the washing operation of the filter 800 can be made more stable.

Next, the cylindrical sieve 830 is to be spaced apart from the inner wall of the case 810 by a predetermined distance to the rotary shaft 820 to filter out foreign substances introduced with the drain through the drain inlet 812 to As shown in FIG. 4A, a plurality of through holes 832 are formed on the surface thereof to filter out foreign substances introduced through the drain inlet 812, and only the drain through the through holes 832. It is configured to be discharged to the drain outlet 814.

In addition, as shown in FIG. 4B, a plurality of support members 834 are connected between the rotary shaft 820 and the cylindrical sieve 830 so that the cylindrical sieve 830 is rotated by the rotary shaft 820. The cylindrical sieve 830 is configured to be rotated by the rotation of the rotary shaft 820 during the washing operation to be supported and at the same time.

On the other hand, the upper blocking plate 836 is installed between the outer peripheral surface of the upper end of the cylindrical sieve 830 and the inner wall of the case 810 that the foreign substances filtered by the cylindrical sieve 830 is discharged through the drain outlet 814 It is configured to block, and the lower blocking plate 838 is installed between the outer peripheral surface of the lower end of the cylindrical sieve 830 and the inner wall of the case 810, the foreign matter filtered by the cylindrical sieve 830 to the outer drain 816 It is configured to be discharged to the outside only.

Next, the cleaning device 840 serves to smoothly flow the drainage by removing foreign substances attached to the outer wall or the inner wall of the cylindrical sieve 830, the configuration is largely the first washing water supply pipe 841 ) And a first spray nozzle 842.

In more detail, the first washing water supply pipe 841 is connected to the inside of the case 810 to be installed in the up and down directions on the inner wall of the case 810 to water supply means such as a pump (not shown). It serves to supply water to the inside of the case 810, the first spray nozzle 842 is a plurality of first washing water supply pipe 841 provided on the inner wall of the case 810 is provided 1 to wash the water supplied from the washing water supply pipe 841 to the cylindrical sieve 830 with a strong force to serve.

That is, when water is supplied by connecting water supply means such as a pump to the first washing water supply pipe 841, the first spray nozzle 842 injects the water strongly in the direction of the cylindrical sieve 830 to cylindrically sieve. It is to remove foreign matters attached to the outside of the (830).

At this time, the upper end of the rotating shaft 820, the handle 828 is installed to rotate the rotating shaft 820 is connected to rotate the cylindrical sieve 830 supported by the rotating shaft 820 by the support member 834. Is configured to be, it is possible to more easily remove the foreign matter attached to the cylindrical sieve 830 by the centrifugal force generated during the rotation of the cylindrical sieve 830.

In addition, the first washing water supply pipe 831 is installed to adjust the amount of water supplied through the first washing water supply pipe 831 by installing a first washing water supply valve 831a, although not shown, the handle 828 Of course, by connecting the motor to the rotating shaft 820 can be configured to be made automatically.

In addition, upper and lower outer peripheral surfaces of the rotary shaft 820 are respectively installed to insert the upper bearing 824 and the lower bearing 826 so that the rotation of the rotary shaft can be made smoothly, located on the upper outer surface of the case 810 The outer circumferential surface of the rotating shaft 820 is fitted to the shaft rod device 822 is configured to prevent the drainage leak through the coupling between the rotating shaft 820 and the case 810.

On the other hand, as shown in Figure 5 (b), the cylindrical sieve 830 may be installed to be eccentric so that its center is spaced apart from the rotation axis 820 by a certain distance, which is the first spray nozzle 842 and the cylindrical sieve This is to ensure sufficient watering space by separating the space between 830 to a predetermined distance or more.

As described above, the washing process of the cylindrical sieve 830 in more detail, first, by closing both the first and second valves 812a and 814a installed at the drain inlet 812 and the drain outlet 814, respectively, Cylindrical strainer by opening the third and fourth valves 816a and 818a respectively installed in the external drain 816 and the internal drain 818 while blocking the flow of the drainage through the inlet 812 and the drain outlet 814. Both the drain on the outside of the 830 and the drain on the inside of the cylindrical sieve 830 is discharged.

Thereafter, a pump (not shown) is connected to the first washing water supply pipe 841, and the washing water (water) is supplied and sprayed through the first spray nozzle 842, and the handle 828 is connected to the upper end of the rotating shaft 820. ), Foreign matters attached to the outer surface of the cylindrical sieve 830 are separated by the impact force of the sprayed water and the centrifugal force generated by the rotation of the cylindrical sieve 830 and the external drain 816 and the internal drain 818 are separated. By being discharged to the outside through the washing operation of the cylindrical sieve 830 is completed.

As described above, after the cylindrical sieve 830 is washed, the third and fourth valves 816a and 818a installed in the external drain 816 and the internal drain 818 are closed again, and the drain inlet 812 and the drain are closed. The first and second valves 812a and 814a respectively installed at the outlet 814 are opened to supply the drainage to the plate heat exchanger 300 again.

Meanwhile, as shown in FIG. 6, the brush 843 may be used as the cleaning device 840. In this case, the brush 843 includes a brush moving member for moving the brush 843 back and forth ( 844) is connected and installed.

That is, by coupling the brush moving member 844 to the inside of the case 810 through one side of the case 810, by coupling the brush 843 to the front end of the brush moving member 844, During normal operation of the drain filter 800, as shown in FIG. 7A, the brush moving member 844 is pulled outward so that the brush 843 is spaced apart from the cylindrical sieve 830 by a predetermined distance. In order to secure a space in which the drainage flowing through the 812 flows, and to clean the cylindrical sieve 830, as illustrated in FIG. 7B, a brush moving member 844 is provided. 810 is pushed into the inside of the brush 843 is in close contact with the cylindrical sieve 830, and then rotates the rotary shaft 820 through the rotation of the handle 828, the cylindrical sieve 830 is rotating while the brush 843 Of the cylindrical sieve 830 by friction with Foreign matter attached to the outer surface is to fall off will be able to clean the cylindrical sieve 830.

In addition, as shown in FIG. 8, the cleaning device 840 may be positioned inside the cylindrical sieve 830 to remove foreign substances attached to the inner wall of the cylindrical sieve 830. The second washing water supply pipe 845 is inserted into the rotating shaft 820, and a plurality of second spray nozzles 846 connected to the second washing water supply pipe 845 protrude outward of the rotating shaft 820. It is composed.

That is, the second washing water supply pipe 845 connected to the pump (not shown) is installed to be inserted into the rotation shaft 820 from the bottom of the case 810, and the second spray nozzle 846 is installed on the rotation shaft 820. The water supply from the pump by drilling a fastening hole (not shown) to be installed so that the second spray nozzle 846 protrudes out of the rotating shaft 820 so as to be connected to the second washing water supply pipe 845. By the water injection of the second spray nozzle 846 by being able to remove the foreign matter attached to the inner wall of the cylindrical sieve 830.

In this case, the second washing water supply pipe 845 is provided with a second washing water supply valve 845a to adjust the amount of water supplied by the pump, and is connected between the cylindrical sieve 830 and the rotating shaft 820. The installed support member 834 is configured to be detachable, and when the inner washing of the cylindrical sieve 830, the cylindrical sieve 830 by the rotation of the rotating shaft 820 may be configured not to rotate.

That is, when the cylindrical sieve 830 is also rotated by the rotation of the rotary shaft 820 during the internal washing of the cylindrical sieve 830, the second spray nozzle 846 and the cylindrical sieve 830 rotate at the same time, and thus always have the same position. Since the support member 834 is removed, the cylindrical sieve 830 is supported by the upper blocking plate 836 and the lower blocking plate 838 so as to rotate the rotating shaft 820 to form a second spray nozzle ( While only 846 rotates, it is possible to remove the foreign matter attached to the inner surface of the cylindrical sieve 830.

Therefore, according to the present invention configured as described above, the plate heat exchange by the foreign matter contained in the drainage by first filtering out the foreign matter contained in the drainage discharged from the fish tank to the plate heat exchanger using a drainage filter Minimizing the contamination of the air, preventing the waste heat recovery system from malfunctioning, and by the simple operation to clean the foreign matter filtered by the drain filter and has a variety of advantages.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention.

The present invention relates to a pretreatment apparatus for removing contaminants from a wastewater heat source heat pump heat exchanger, and more particularly, to a heat pump type heat exchanger using wastewater heat contained in wastewater discarded in aquaculture farms, saunas, and industries as heat source water. The present invention relates to a pretreatment apparatus for removing contaminants of a wastewater heat source heat pump heat exchanger to filter contaminants contained in drainage water flowing into a heat exchanger to prevent the formation of the same.

1: Water supply temperature control system 100: Automatic decontamination device
110: drain inlet pipe 120: cleaning ball separator
130: washing ball recovery machine 140: pump
160: ejector 170: drain discharge pipe
180: cleaning ball circulation piping
200: seawater pump 210: seawater filter
220: seawater supply pipe 300: plate heat exchanger
310: seawater inlet 320: seawater outlet
330: drain inlet 340: drain outlet
400: heat pump 500: fish tank
600: sump 610: filter net
700: drain pump 800: drain filter
810 case 812: drain inlet
814: drain outlet 816: external drain
818: internal drain 820: rotating shaft
822: shaft rod device 824: upper bearing
826: lower bearing 828: handle
830 cylindrical sieve 832 through hole
834: support member 836: upper blocking plate
838: lower block 840: cleaning device
841: 1st washing water supply pipe 842: 1st injection nozzle
843 brush 844 brush moving member
845: second washing water supply pipe 846: second injection nozzle
850: differential pressure sensing device

Claims (10)

In the heat pump heat exchanger using a wastewater heat source to recycle the heat contained in the drainage from the fish tank,
Between the fish farm and the plate heat exchanger is installed an automatic decontamination device using a cleaning ball,
A pretreatment device for removing contaminants in a wastewater heat source heat pump heat exchanger, characterized in that a drain filter is connected between the fish farm and the automatic decontamination device.
The method according to claim 1,
The drain filter is characterized in that it comprises a case in which a rotating shaft is installed in the center and the drain flows in and out, a cylindrical sieve provided on the inner side of the case, and a washing device for washing the cylindrical sieve. Pretreatment device for removing contaminants from waste heat source heat pump heat exchanger.
3. The method of claim 2,
The case has a drainage inlet portion into which the drainage discharged from the fish tank is introduced, a drainage outlet through which the inflowing drainage is discharged, foreign matter accumulated in the outside of the cylindrical sieve, and foreign matter accumulated in the cylindrical sieve and the drainage. A pretreatment apparatus for removing contaminants in a wastewater heat source heat pump heat exchanger, characterized in that the internal drain is discharged.
The method of claim 3,
A pre-treatment apparatus for removing contaminants in a wastewater heat source heat pump heat exchanger, characterized in that the differential pressure sensing device is connected between the drainage inlet and the drain outlet.
3. The method of claim 2,
A pretreatment device for removing contaminants in a wastewater heat source heat pump heat exchanger, characterized in that an upper barrier plate and a lower barrier plate are installed between the upper and lower ends of the cylindrical sieve and the inner wall of the case.
3. The method of claim 2,
A handle is provided at an upper end of the rotary shaft, and a shaft rod device is fitted to a rotary shaft located at an upper outer side of the case, and a pretreatment device for removing contaminants of a wastewater heat source heat pump heat exchanger.
3. The method of claim 2,
The washing apparatus removes contaminants of a wastewater heat source heat pump heat exchanger, comprising a first washing water supply pipe inserted into one side wall of the case and a plurality of first spray nozzles installed on the first washing water supply pipe. Pretreatment device for.
8. The method of claim 7,
The cylindrical sieve is eccentric to one side pre-treatment device for removing contaminants of the waste heat source heat pump heat exchanger, characterized in that it is built on the rotating shaft.
3. The method of claim 2,
The washing apparatus is a pre-treatment apparatus for removing contaminants of a wastewater heat source heat pump heat exchanger, characterized in that the brush is inserted into the inside of the case and installed, the brush moving member connected to the brush to move the brush back and forth. .
3. The method of claim 2,
The washing apparatus includes a second washing water supply pipe inserted into the rotating shaft and a plurality of second spray nozzles connected to the second washing water supply pipe so as to protrude outward of the rotating shaft. Pretreatment device for decontamination of pump heat exchanger.

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