KR20010016031A - Shell Tube type Filter and Auto-controlled Heat Recovery System of Waste Water - Google Patents

Abstract

PURPOSE: A shell tube type filter and an automatic control system are provided to filtrate impurity easily and to control the starting of a waste heat recovery system by having simple structure for washing the filter automatically. CONSTITUTION: A shell tube type filter(130) includes a thick plate body having a considerable thickness or height, and plural tubular cylindrical holes(131) vertically penetrated to a lower face(130B) from an upper face(130S). The shell tube type filter prevents thin and long impurities including hairs or thread from getting tangled with other thread when the impurities are introduced into the cylindrical holes of the filter. Thus, the impurities are removed easily. An automatic control system for recovering waste heat consists of a primary filter(100), a secondary filter, an eddy tub and a heat exchanger. The components are connected each other by pipes. Each component includes inlet/outlet ports for waste hot water and washing water, and automatic control valves(V1-V4,DV) on each discharge pipe. Therefore, the system is controlled automatically.

Description

Shell Tube Type Filter and Auto-controlled Heat Recovery System of Waste Water

The present invention relates to a waste heat recovery system for recovering heat of waste hot water used and discharged in buildings or factories. More particularly, the present invention relates to a filter consisting of a fine hole tube, that is, a shell tube type filter and an automated method using the same. It relates to a waste heat recovery system.

In general, public baths and other hot water or steam buildings are used to discharge waste hot water. Since the waste hot water contains a considerable amount of heat energy, it is necessary to recover heat from the waste water and reuse it to prevent waste of energy. Heat recovery devices have conventionally been used.

However, the waste hot water contains a large amount of foreign matter such as suspended solids. These foreign matters are to be sent to the heat exchanger after filtering foreign matters from the waste hot water discharged by the filter to reduce the heat recovery function of the heat exchanger of the waste heat recovery system. .

Therefore, if the waste heat recovery system is operated for a long time, foreign substances accumulated in the filter should be removed. Otherwise, the waste heat is sent to the heat exchanger without being filtered and the foreign matter mixed with the peon water is not filtered and the waste hot water is blocked by the filter and cannot be transferred to the heat exchanger. Because it can not be performed.

The filter of the filter used in the filter of the conventional waste heat recovery apparatus is a reticulated net type filter.

The waste hot water discarded in homes, public baths, and large buildings contains thin, long, and flexible foreign bodies such as hair and other threads. When foreign substances such as hair are filtered out using the net filter, Partially pass through the hole in the net, covering the hole in the filter while wrapping the net.

Therefore, it is very difficult to remove foreign matters such as hair or thread from the net-type filter because the hair is entangled while being wrapped around the net and tightly tied to the net of the filter as described above.

Therefore, in the conventional case, the cleaning operation of the filter for cleaning the filter removes the hair and the like from the net type filter by replacing the filter itself with a new one or by hand.

As such, in the conventional waste heat recovery apparatus, since the cleaning operation of the filter is inevitably dependent on manual labor, the operation of the waste heat recovery apparatus of waste hot water cannot be automated.

As described above, in the conventional manual waste heat recovery apparatus, the scale formed in the heat exchanger heat exchanger tube by the viscous substances and chemicals contained in the waste hot water is cleaned by manual operation, and the cleaning of the apparatus is performed depending on the user's sense. By doing this, it was impossible to operate the waste heat recovery system effectively. In order to recover the heat of the waste hot water, the generated waste hot water passes through all the heat pipes of the waste water heat recovery system heat exchanger, and the heat contained in the waste hot water is transferred to the raw water, and the raw water is preheated to the boiler or the place of use. It is possible to reduce the energy (fuel) corresponding to the preheated amount by supplying it. Until now, all the wastewater heat recovery devices are manufactured and installed to be operated manually. Since it is impossible to measure the amount of waste heat recovery, it is not possible to install the waste water heat recovery system due to distrust of the waste water heat recovery system, or the existing waste water heat recovery system that has been installed has no choice but to operate or stop at low efficiency. Increase in fixed expenditure costs and the national income of energy due to waste of energy will be. Recognizing the importance of waste heat recovery, the government mandated the installation of waste hot water recovery system in 1994 when constructing a building that discharges hot water of 25 ℃ or higher. However, the waste hot water heat recovery system does not perform its performance for the same reason. Due to the cost burden of installing the heat recovery system and the waste of money for the manufacture and installation of waste hot water heat recovery system, the original purpose has been lost.

The present invention has been made to solve the conventional problems as described above, an object of the present invention is a shell tube type filter that can easily remove the filtered foreign matter from the filter as a backwashing filter of the filter used in the waste heat recovery system The present invention provides an automatic control waste heat recovery system capable of automatically controlling the operation of the waste heat recovery device by providing a structure capable of automatically cleaning the filter device for removing foreign matters mixed into the waste water. .

1 is a system configuration of the automatic waste heat recovery system of the present invention

Figure 2 is an exploded perspective view (a), side cross-sectional view (b) of the primary filter of the present invention

Figure 3 is an exploded perspective view of the vortex tank and the heat exchanger in the present invention

Figure 4 is a side cross-sectional view of the vortex tank according to the present invention

5 is a plan view (a), a side view (b), and a bottom view (c) of the wastewater vortex nozzle.

**** Brief description of the major symbols in the drawings ****

100: primary filter 200: vortex tank 300: heat exchanger

400: secondary filter 110: normal body 120: lid

130 shell tube filter 111 inlet 112 outlet

114: washing water inlet 121: washing water outlet

210: vortex tank body 220: vortex tank lid 230: wastewater vortex nozzle

221: vortex tank inlet pipe 231: nozzle hole

311: raw water inlet 312: raw water inlet

S1, S2: Temperature measuring sensor S3: Flow measuring instrument S4: Pressure measuring instrument

V1 to V10: Automatic control valve DV: Drain valve AT: Automatic control panel

Shell tube type filter and automatic control waste heat recovery system according to the present invention for achieving the above object will be described in detail with the accompanying drawings.

1 is a system configuration of the automatic waste heat recovery system of the present invention.

1, the waste heat recovery system of the present invention is the primary filter 100 and the secondary filter 400, the vortex tank 200 and the heat exchanger 300 are connected to each other by a pipe, Automatic temperature control valves (V1 to V10, DV), temperature measuring devices (S2 and S3), flow measuring devices (S3), pressure measuring devices (S4) And it is composed of an automatic control panel (AT) for controlling the valve and the measuring device.

Looking at the flow of waste hot water in the present invention consisting of such a configuration, the waste hot water is first obtained by the primary filter 100 is first filtered and then sent to the vortex tank 200 to form the waste hot water vortex The waste water is transferred to the heat exchanger 300 and heat exchanged between the hot water in the hot state and the raw water in the low temperature state (supply water) to transfer the heat to the raw water. It is then sent to a sewer or septic tank through an outlet.

By the way, the vortex tank 200 is connected to the secondary filter 400, and the waste hot water of the vortex tank 200 is transferred to the secondary filter 400 by the opening of the automatic valve V8 and filtered again to pump the pump (P). ) To be conveyed to the vortex tank 200.

The operation of the secondary filter 400 is controlled to be performed intermittently and periodically.

The operation cycle and the operation time of the secondary filter 400 depend on the concentration of foreign matter mixed with the waste water. That is, when the secondary filter 400 is insufficient due to the primary filtration and the fluidity is imparted to the waste hot water in the heat exchanger 300, the viscous material mixed in the waste hot water adheres to the surface of the heat transfer tube installed in the heat exchanger 300 to be closed. The device is additionally used to generate the vortex as the wastewater vortex nozzle 230 installed in the vortex tank 200 so as not to disturb the heat transfer of the hot water or to block the movement of the waste water.

Each component constituting the automatic waste heat recovery system of the present invention having such a configuration and action will be described in more detail.

2 is a view showing the primary filter 100 of the present invention, a is an exploded perspective view of Figure 2, b is a side cross-sectional view.

The primary filter 100 is a body 110, the upper surface is open while taking the normal form as shown in a of Figure 2, the lid 120 covering the upper surface of the body 110, the body Shell 110 is composed of a shell tube filter 130, installed inside the SHELL TUBE TYPE FILTER.

Through-holes are formed in the upper side portion and the lower side portion on both sides of the body 110, respectively, so that the through-hole of the upper side is an inlet 111 through which waste hot water is obtained and the through-hole of the lower side is filtered waste water from the next step. The outlet 112 is transferred to the vortex tank 200.

The inlet 111 and outlet 112 are formed with valves V1 and V2 that are automatically controlled, respectively.

And a through-hole is formed in the center of the bottom surface of the body 110, the through-hole is a washing water inlet 114 is a washing water inlet for cleaning the filter and whether the washing water inlet depends on the valve V3 is automatically controlled. In addition, the sediment discharge pipe 115 is separately formed in the washing water inlet 114 to discharge the sediment out of the body intermittently as the drain valve DV.

The lid 120 covers the upper surface of the body 110 and penetrates through a central portion thereof to form a washing water outlet 121 with the valve V4.

The shell tube-type filter 130 is made of a thick plate-like body having a considerable thickness, that is, a height, the upper surface 130S while having a cross section that is closely assembled to the horizontal cross section of the inner space of the filter body 100. At the bottom surface 130B is vertical to the plurality of tubular cylindrical holes 131 are densely formed to form a bundle. When waste hot water flows into the upper surface 130S side, it passes through the cylindrical hole 131 and the bottom surface ( 130B), the foreign matter mixed in the waste hot water during this process, the solid matter such as hair, thread, and other solid matter with a larger volume than the cross section of the cylindrical hole 131, or the viscous substance having a substantially viscous viscosity, is a shell tube type filter. Waste water is filtered by accumulation on the upper surface does not pass through (130).

In particular, the shell tube-type filter 130, which is a main feature of the present invention, unlike a conventional net-type filter, even when one end thereof enters the cylindrical hole 131 in filtering thin, long and flexible foreign substances such as hair and yarn. Since there is no entanglement with the ends of other yarns, it will be very easy to filter a considerable amount of wastewater and remove foreign matters accumulated on the upper surface of the filter 130.

Therefore, in the present invention, the automatic washing can be performed as the washing water flowing backward of the filter, which is dependent on the shell tube filter 130.

Waste water flows into the primary filter 100 of the present invention having such a configuration through the inlet (11), filtered through the shell tube-type filter 130, and then passed through the outlet 112 to the vortex tank described later Are transferred to 200.

And the filter 100, which filtered a considerable amount of waste water is blocked by the foreign matter filtered through the cylinder hole 131 of the shell tube filter 130, and thus the filtration function of the filter 100 is reduced, in this case the inlet The 111 and the outlet 112 are closed by the valves V1 and V2, and the washing water inlet 114 formed at the bottom of the body 110 and the washing water outlet 121 formed at the lid 120 are operated by the valves V3 and V4. When the washing water flows into the body 110 and flows backward, foreign matters such as hair, which are caught on the upper surface 130S of the shell tube filter 130, other solid foreign matters, and mucus foreign substances are lifted, and the washing water together with the washing water. Passed through the discharge port 121 is discharged out of the filter 100 is transported to the septic tank.

In particular, the foreign substances that were blocking the cylindrical hole 131 formed in the thin tube shape formed in the shell tube filter 130 in the washing process is also washed.

3 is an exploded perspective view of the vortex tank 200 and the heat exchanger 300 of the present invention, Figure 4 is a side cross-sectional view of the vortex tank 200.

3 and 4, the vortex tank 200 is composed of a conventional body 210, a lid 220, and a wastewater vortex nozzle 230 having an upper and lower surfaces opened.

The body 210 has an end surface having the same size as that of the body of the heat exchanger 300 to be described later, and is assembled to communicate with each other. The waste water inlet 211 penetrates the left and right sides of the body 210. ) And waste hot water outlet 212 are formed and the inlet 211 is in communication with the primary filter 100 described above, the outlet 212 is in communication with the secondary filter 400 to be described later. .

In addition, the lid 220 of the vortex tank 200 covers the upper surface of the body 210, and a through hole is formed in the center thereof, and an inlet pipe 221 is vertically assembled in the through hole. 221 is a tube into which the waste hot water filtered by the secondary filter 400 described later is introduced. At the lower end of the water inlet pipe 221, a cylindrical wastewater vortex nozzle 230 is formed with both ends blocked slightly.

5 illustrates the wastewater vortex nozzle 230 in a plan view (a), a side view (b), and a bottom view (c). The wastewater vortex nozzle 230 has a cylindrical shape and is slightly inclined with the water inlet pipe 221 vertically connected to the center of the water inlet pipe 221 while being connected to the center thereof.

In addition, nozzle holes 231 are formed in the bottom portion of the wastewater vortex nozzle 230 in a plurality of holes in a line in a direction of about 45 °, and the nozzle holes 231 are formed on both sides of the center of the body. They are formed continuously by staggering with each other.

The wastewater vortex nozzle 230 having such a configuration is introduced into the vortex tank 200 through the nozzle hole 231 by introducing the waste hot water filtered by the secondary filter which is pumped into the water inlet pipe 221. The secondary filtered waste hot water sprayed from the nozzle hole 231 is discharged to the waste hot water filtered by the primary filter 100 obtained through the inlet 211 into the vortex tank 200 in the same manner as described above. Sprinkled and mixed, in this process, the waste hot water in the vortex tank 200 is a vortex is generated is generated vortex in the vortex tank (200). In order to more effectively generate such a vortex, the wastewater vortex nozzle 230 is formed to be inclined with the inlet pipe 221 as described above.

When the vortex is generated in the waste water by the wastewater vortex nozzle 230, foreign matters that are not filtered when passing through the heat exchanger 300, which will be described later, are not attached to the wall in the heat exchanger 300 so that the wall of the heat exchanger 300 may not be attached. It does not deteriorate heat exchange ability.

1 and 4 the heat exchanger 300 applied to the present invention is suitably shown. The basic structure of the heat exchanger 300 is no different from a known heat exchanger, but the upper surface of the body 310 of the heat exchanger 300 is opened to communicate with the vortex tank 200 to close the vortex tank 200. The hot water is transferred to the heat exchanger 300 as it is by its own weight, so that heat exchange is performed between the waste hot water and the raw water, and again, the hot water is transferred to the collection tank 330 formed on the lower side of the body 310.

Inside the heat exchanger body 310, the heat exchanger tube 320 in which raw water flows in a low temperature state, which is not used in a known shape and method, is between the heat exchanger tube 320 in which a tube is successively formed on a lamellar. When the high temperature waste hot water passes through the gap, the heat of the waste hot water is transferred to the raw water through the heat transfer pipe 320, which is a good conductor, and the raw water is heated to heat exchange.

The raw water of the low temperature flowing through the heat transfer pipe 320 is obtained and warmed through the raw water inlet 311 formed on the side of the body 310 and then discharged through the water outlet 312 formed with the valve V5 to be transferred to the boiler. The temperature measuring sensors S1 and S2 are respectively installed on the raw water inlet 311 and the raw water outlet 312 so as to measure the calorific value of the raw water, and the flow meter S3 in the pipe of the raw water inlet 311. The ground was established to control the flow rate of raw water, that is, the flow rate of raw water.

In addition, a wastewater discharge port 313 is formed at the bottom of the collection tank 330 formed at the lower side of the heat exchanger 300 to discharge wastewater after completion of heat exchange to a sewer or a septic tank, and a bottom surface 315 of the heat exchanger 30 0 is formed. The washing water inlet 316 through which the washing water flows through the center of the valve is formed together with the valve V6, and the pipe forming the washing water inlet 316 is branched to form a sediment discharge pipe 317 to drain the valve. (DV) is configured to discharge the precipitate out of the body intermittently deposited on the bottom surface of the heat exchanger.

Secondary filter 400 is to have a structure substantially the same as the primary filter 100, but the waste hot water filtered in the secondary filter 400 is the waste hot water passed through the vortex tank 200 to be filtered out Secondary filtered waste water is pumped to the water inlet pipe 221 formed in the lid 220 of the vortex tank 200 by the pressure pump P installed in the outlet 412 to collect the vortex in the vortex tank 200. It is sent to the wastewater vortex nozzle 230 to make.

And a pressure measuring device (S4) for measuring the water pressure in the body 410 of the secondary filter 400 is installed to measure the internal pressure of the secondary filter 400 shell tube filter 430 performs a normal function The automatic control panel (AT) determines whether the secondary filter 400 is washed or not.

In FIG. 1, unexplained code | symbol of the code | symbol shown in the figure which shows the secondary filter 400 is shown.

410 is a conventional body, 420 is a lid, 430 is a shell tube filter, 411 is an inlet, 412 is an outlet, V7 V8 V9 V10 is a valve, 421 is a wash water outlet, and 414 is a wash inlet.

In the above-described devices of the present invention, the washing water for washing each device is configured to use the raw water pumped by branching the raw water pipe piped to the heat exchanger 300 as shown in FIG.

In the automated waste heat recovery system using the shell tube filter according to the present invention having the above configuration, information is obtained by various measuring devices S1, S2, S3, S4, and various valves V1 to V10 and pumps. By controlling the operation (P) by the automatic control panel (AT), it is possible to control each device by the unmanned waste heat recovery system of the present invention.

That is, the automatic control panel AT inputs and controls the overall operating time of devices related to the system of the present invention according to the temperature rise rate of raw water and the discharge temperature of waste hot water, and controls the valves V1, V2, V3 of the primary filter 100. , Whether or not the operation of the V4 and the pump (P) of the secondary filter 400 and the operation of the valves V7, V8, V9, V10, valve V5 of the vortex tank 200, valve V6 of the heat exchanger (300) The operating time and operating time are controlled depending on the foreign matter concentration of the waste water, and the operating time and time of the drain valve DV of each device (100, 300, 400) depends on the foreign matter concentration of the waste water. The temperature of S3 and S4, which measure the inlet and discharge temperatures of the raw water, and the information of the flowmeter S4, which measures the amount of raw water inflow, to measure the amount of heat recovered and to appear on a separate display window. Do it.

Shell tube-type filter 130 according to the present invention having the configuration and action as described above, unlike the conventional net-type filter, one end of the filter in the present invention in filtering thin, long and flexible foreign matter such as hair, thread ( Even if entering into the cylindrical hole 131 formed in 130, there is no tangling with the ends of other yarns, so foreign substances such as threads among the foreign substances accumulated on the upper surface 130S of the filter 130 by filtration of a considerable amount of waste water are entangled with the filter. It is extremely easy to remove them.

In particular, when backwash water is supplied to the opposite side of the cylindrical hole 131, that is, the bottom surface side 130B of the shell tube type filter, it is easily separated from the filter 130.

Therefore, the present invention had to be operated manually, and unlike the conventional waste heat recovery system, automatic control is possible, and in particular, the waste heat recovery system according to the present invention can be operated automatically, so it is not only economical, but also high temperature waste. According to the concentration of solids contained in the hot water, it not only increases the durability of the device to automatically control the operation and cleaning of various devices, but also facilitates the user's convenience, especially the secondary filter which is one of the characteristics of the present invention. 400 and the vortex tank 200 is a useful invention because it can be treated even in high concentration of waste hot water.

In addition, the automatic control panel of the present invention is to display the amount of heat obtained by the raw water, thereby predicting the energy consumption in advance to enable efficient energy management, and the additional effect that the user feels the usefulness of the control system of the present invention to the skin Will do.

Claims (7)

A filter for use in a filter for filtering foreign matter contained in wastewater, the filter being formed into a thick plate body having a considerable thickness or height, and vertically penetrating from the upper surface 130S to the lower surface 1300B. Shell tube type filter in which a plurality of tubular cylindrical holes 131 are formed in a bundle. In the waste heat recovery system for recovering heat from the discharged waste water, the primary filter (00), the secondary filter (400), the vortex tank (200) and the heat exchanger (300) are connected to each other by piping In addition, the automatic control valves (V1 to V10, DV) are installed on the inlet, the outlet, and the sediment discharge pipes of the waste hot water and the washing water of the apparatuses 100, 200, 300, and 400, respectively, automatically by the automatic control panel. Automatically controlled waste heat recovery system The method of claim 2, wherein the waste hot water is first obtained by the primary filter 100, first filtered, and then transferred to the vortex tank 200 so that the waste hot water forms a vortex to flow. In the next step, the heat exchanger 300 is transferred to the heat exchanger 300 to exchange heat between the waste hot water in a high temperature state and the raw water (supply water) in a low temperature state, and the waste hot water which transfers heat to the raw water is discharged to a sewer or septic tank through an outlet. The vortex tank 200 is connected to the secondary filter 400, and the waste hot water of the vortex tank 200 is transferred to the secondary filter 400 by the opening of the automatic valve V7 and filtered again by the pump P. Automatically controlled waste heat recovery system controlled to be periodically and intermittently carried back to the vortex tank (200) According to claim 2 or 3, wherein the primary filter 100 is composed of a conventional body 110, a lid 120, a shell tube-type filter 130, the waste hot water respectively above and below the side of the body 110 The inlet 111 and the outlet 112 through which the inlet and outlet are formed together with the valves V1 and V2, and the washing water inlet 114 and the washing water inlet and outlet for the washing water flowing back and forth to the bottom surface of the lid 12 and the body 110. Automatically controlled waste heat recovery system with outlet 121 formed with valves V3 and V4 According to claim 2 or 3, the vortex tank 200 is composed of a conventional body 210 and the lid 220 and the waste water vortex nozzle 230, the upper lower surface is open, the upper side is a conventional It is formed in communication with the upper side of the heat exchanger 300, the wastewater vortex nozzle 230 is a common body in horizontal communication with the lower end of the water inlet pipe 221 formed vertically through the lid 220, a plurality of Controlled waste heat recovery system in which two nozzle holes 231 are staggered to both sides with a center as the center According to claim 2 or 3, wherein the temperature measuring sensor S1 and S2 are respectively installed on the raw water inlet 311 and the raw water outlet 312 side of the heat exchanger 300, the temperature of the raw water and the raw water to be discharged Automatic control waste heat recovery system that measures the temperature and installs a flow meter (S3) in the pipe of the raw water inlet (311) The automatic waste heat recovery system according to claim 2 or 3, wherein the secondary filter 400 has a pressure measuring device S4 for measuring the internal pressure thereof.