Electromagnetic filtering type cleaning and pollution discharge device of reclaimed water source heat pump

Abstract

The utility model discloses an electromagnetic filtering type cleaning and blowdown device of a reclaimed water source heat pump, which comprises a heat exchanger, a filter screen, a filter screen and a filter screen, and is characterized in that a heating medium pipeline inlet is formed in the heat exchanger; the electromagnetic adsorption coil is fixed in the heating medium pipeline inlet, and a sensor used for detecting the thickness of magnet impurities adsorbed by the electromagnetic adsorption coil is installed in the electromagnetic adsorption coil; the electric gate valve is arranged on the inlet of the heating medium pipeline and is positioned below the electromagnetic adsorption coil; the electric blow-down valve is installed on the heating medium pipeline inlet and located between the electromagnetic adsorption coil and the electric gate valve; and the control cabinet is located on one side of the heat exchanger, and the control cabinet is electrically connected with the electromagnetic adsorption coil, the sensor, the electric gate valve and the electric blow-down valve. According to the device, iron-containing substances in reclaimed water can be intercepted, the iron-containing substances are completely discharged, the influence that the heat exchange efficiency is reduced due to the fact that small-particle iron-containing substances are attached to a pipeline is reduced, the service life of equipment is prolonged, and the problem that the maintenance cost is high due to blockage of the iron-containing substances is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, and more specifically to an electromagnetic filtering type cleaning and sewage discharge device of a medium water source heat pump. Background Art

[0002] With the scarcity of energy, the development of new energy has received more and more attention. The mainstream new energy equipment now includes electric boilers, gas furnaces, air energy, etc., but the energy consumption is too high in daily use. Therefore, the more energy-saving water source heat pump is valued by everyone. The water source heat pump system is the most promising one among all kinds of new energy equipment. At present, the technology is relatively mature. The water source heat pump mainly uses water as the cold and heat source for extracting and storing energy. With the help of the physical cycle change of the refrigerant inside the heat pump unit system, it consumes a small amount of electricity to achieve a heating effect. An innovative technology. Compared with other new energy equipment, the technical key and difficulty of the water source heat pump lies in the blockage caused by excessive iron content in the water in some areas, the inability to completely discharge sewage due to the cleaning device, which causes pollution to the inside of the equipment and affects the heat exchange efficiency, and the corrosion caused by the long-term attachment of small particles of iron-containing matter reduces the service life of the equipment.

[0003] In recent years, with the depletion of energy and the development of environmental protection, many research institutions have invented the decontamination device of the water source heat pump, but the treatment efficiency of the iron-containing substances in the water is not high, and the pollutants cannot be completely discharged. For example, Chinese patent CN201620432808.1 discloses a method of draining water to the filter net through four drainage pipes to filter out large pollution sources in the sewage, and at the same time, a rotating wheel is provided to break up the large pollution sources. However, in actual use, the large particles of pollutants are blocked outside by the water inlet pipe filter net, that is, the pollutants still remain in the pipeline, and the pollutants are not completely discharged, which in turn causes safety hazards to the equipment and affects the life of the equipment. Another Chinese patent CN201720926144.9 discloses a method of brushing the inside of the equipment by setting a spiral brush in the filter area, with a plurality of bristles fixed on the upper end of the brush body, and a detachable base. After the brush is used for a period of time, the brush body is replaced. However, this method does not intercept the iron-containing substances in the water, which in turn causes the iron-containing substances to aggravate the corrosion of the pipeline. The pollutants are not completely eliminated, which poses a safety hazard to the equipment over time and increases maintenance costs.

[0004] Therefore, how to provide an electromagnetic filtering cleaning and sewage discharge device for a grey water source heat pump that can intercept iron-containing substances in grey water, completely discharge the iron-containing substances, reduce the impact of reduced heat exchange efficiency caused by small particles of iron-containing substances attached to the pipeline, extend equipment life, and reduce the high maintenance cost caused by blockage of iron-containing substances is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of this, the utility model provides an electromagnetic filtering cleaning and sewage discharge device for a grey water source heat pump that can intercept iron-containing substances in grey water and completely discharge the iron-containing substances, thereby reducing the impact of reduced heat exchange efficiency caused by small particles of iron-containing substances adhering to the pipeline, extending the life of the equipment, and reducing the high maintenance cost caused by blockage of iron-containing substances.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An electromagnetic filtering cleaning and sewage discharge device for a medium-sized water source heat pump, comprising:

[0008] A heat exchanger, wherein the heat exchanger is provided with a heat medium pipeline inlet;

[0009] An electromagnetic adsorption coil, wherein the electromagnetic adsorption coil is fixed in the inlet of the heat medium pipeline, and a sensor for detecting the thickness of impurities adsorbed by the electromagnetic adsorption coil is installed inside the electromagnetic adsorption coil;

[0010] An electric gate valve, which is installed on the inlet of the heat medium pipeline and is located below the electromagnetic adsorption coil;

[0011] An electric drain valve, which is installed on the inlet of the heat medium pipeline and is located between the electromagnetic adsorption coil and the electric gate valve;

[0012] A control cabinet is located at one side of the heat exchanger, and the control cabinet is electrically connected to the electromagnetic adsorption coil, the sensor, the electric gate valve, and the electric drain valve.

[0013] Through the above technical scheme, it can be known that compared with the prior art, the utility model discloses an electromagnetic filtering cleaning and sewage discharge device for a water source heat pump, which can have two modes: cleaning and sewage discharge: when the cleaning mode is running, the electromagnetic adsorption coil is turned on, the electric gate valve is turned on, and the electric sewage discharge valve is closed. The water passes through the heat medium pipeline inlet and reaches the electromagnetic adsorption coil. The device adsorbs all iron substances in the water through the electromagnetic adsorption coil. At the same time, the sensor continuously monitors whether the thickness of the iron-containing substances reaches the warning line. After the adsorption process, the water enters the internal tube bundle of the heat exchanger for heat exchange. As the running time is too long, the thickness of the iron-containing impurities reaches the warning line, and the sensor will send a signal to the control cabinet. At this time, the control cabinet sends instructions to the electromagnetic adsorption coil, the electric gate valve, and the electric sewage discharge valve, and the sewage discharge mode is started. When the sewage discharge mode is running, the electromagnetic adsorption coil is closed, the electric gate valve is closed, and the electric sewage discharge valve is opened. The iron-containing impurities accumulated on the electromagnetic adsorption coil are discharged through the electric sewage discharge valve. At the same time, the sensor will continue to monitor whether the thickness of the iron-containing substances is outside the warning line until the scaling thickness reaches within the warning line, and the system enters the normal cleaning mode.

[0014] Therefore, the device uses an electromagnetic adsorption coil to remove iron impurities in the reclaimed water to prevent iron-containing substances from entering the equipment. At the same time, the sensor measures the scaling thickness of the electromagnetic adsorption coil. When the thickness reaches the warning line, the electric drain valve continuously discharges sewage to completely discharge the iron-containing substances, which significantly improves the heat exchange effect of the heat exchanger. Compared with the traditional structure, the structure of this device can reduce the maintenance time caused by blockage of iron-containing substances by 50% and improve the heat exchange efficiency by 10%.

[0015] Furthermore, the outside of the electromagnetic adsorption coil is coated with an anti-corrosion layer.

[0016] The beneficial effect of adopting the above technical solution is that a closed protective film can be formed on the outside of the electromagnetic adsorption coil, which helps to protect the electromagnetic adsorption coil from sewage corrosion and prolong its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 The utility model provides a schematic structural diagram of an electromagnetic filtering cleaning and sewage discharge device for a water source heat pump.

[0019] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of local A in the middle.

[0020] Figure 3 This is a schematic cross-sectional view of the heat medium pipeline inlet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-Figure 3 As shown, the embodiment of the utility model discloses an electromagnetic filtering cleaning and sewage discharge device for a medium-sized water source heat pump, comprising:

[0023] The heat exchanger 1 is provided with a heat medium pipeline inlet 11;

[0024] The electromagnetic adsorption coil 2 is fixed in the heat medium pipe inlet 11, and a sensor 3 for detecting the thickness of impurities adsorbed by the electromagnetic adsorption coil 2 is installed inside the electromagnetic adsorption coil 2;

[0025] The electric gate valve 4 is installed on the heat medium pipeline inlet 11 and is located below the electromagnetic adsorption coil 2;

[0026] The electric drain valve 5 is installed on the heat medium pipeline inlet 11 and is located between the electromagnetic adsorption coil 2 and the electric gate valve 4;

[0027] The control cabinet 6 is located at one side of the heat exchanger 1 , and the control cabinet 6 is electrically connected to the electromagnetic adsorption coil 2 , the sensor 3 , the electric gate valve 4 , and the electric drain valve 5 .

[0028] The outside of the electromagnetic adsorption coil 2 is coated with an anti-corrosion layer, which can be made of polytetrafluoroethylene material with strong corrosion resistance. In this way, a closed protective film can be formed on the outside of the electromagnetic adsorption coil 2, which helps to protect the electromagnetic adsorption coil 2 from sewage corrosion and prolong its life.

[0029] The device can intercept iron-containing substances in the reclaimed water and completely discharge the iron-containing substances, thereby reducing the impact of reduced heat exchange efficiency caused by small particles of iron-containing substances adhering to the pipeline, extending the life of the equipment, and reducing the high maintenance cost caused by blockage of iron-containing substances.

[0030] This implementation case takes the grey water heat pump of a heating company as an example. The adjacent grey water treatment plant uses the grey water heat pump to convert the low-grade energy of grey water into high-grade thermal energy, and cooperates with the heating methods such as steam turbine exhaust heat heating to meet the high-temperature hot water supply of central heating. The water contains a large amount of iron-containing substances, which will accumulate in the heat exchange equipment after long-term operation, resulting in reduced heat exchange efficiency of the equipment, seriously affecting the safe operation of the heat pump unit. The company's grey water source heat pump is installed with the electromagnetic filtering cleaning and sewage discharge device of the grey water source heat pump described in this utility model. An electromagnetic adsorption coil is installed at the inlet of the heat medium pipeline of the grey water source heat pump to remove iron impurities in the grey water and improve the safe operation time and heat exchange efficiency. When the cleaning mode is running, the electromagnetic adsorption coil is turned on to form a strong and concentrated magnetic field to adsorb iron impurities such as iron filings in the water. The electric gate valve is opened, the electric drain valve is closed, and the reclaimed water passes through the heat medium pipe inlet to reach the electromagnetic adsorption coil. The device adsorbs all iron substances in the reclaimed water through the electromagnetic adsorption coil. At the same time, the sensor continuously monitors whether the iron-containing substances have reached the warning line. After the adsorption process, the reclaimed water enters the internal tube bundle of the heat exchanger for heat exchange. As the running time is too long, the thickness of iron impurities reaches the warning line. The sensor will send a signal to the control cabinet. At this time, the control cabinet sends instructions to the electromagnetic adsorption coil, the electric gate valve, and the electric drain valve, and the sewage mode is started. When the sewage mode is running, the electromagnetic adsorption coil is closed, the electric gate valve is remotely controlled to close, and the electric drain valve is opened to discharge the iron impurities accumulated on the electromagnetic adsorption coil through the electric drain valve. At the same time, the sensor will continue to monitor whether the thickness of iron-containing substances is outside the warning line until the scaling thickness reaches within the warning line, and the system enters the normal cleaning mode. After the company applied this device, the number of continuous operating hours of the heat exchanger during the heating season increased by 20%, the accident rate of equipment during the heating period decreased by 50%, and the heat exchange efficiency increased by 10%, greatly improving production safety.

[0031] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electromagnetic filtering cleaning and sewage discharge device for a water source heat pump, characterized in that: include: A heat exchanger (1), wherein the heat exchanger (1) is provided with a heat medium pipeline inlet (11); An electromagnetic adsorption coil (2), wherein the electromagnetic adsorption coil (2) is fixed in the heat medium pipeline inlet (11), and a sensor (3) for detecting the thickness of impurities adsorbed by the electromagnetic adsorption coil (2) is installed inside the electromagnetic adsorption coil (2); An electric gate valve (4), the electric gate valve (4) being installed on the heat medium pipeline inlet (11) and located below the electromagnetic adsorption coil (2); An electric drain valve (5), the electric drain valve (5) being installed on the heat medium pipeline inlet (11) and being located between the electromagnetic adsorption coil (2) and the electric gate valve (4); A control cabinet (6), the control cabinet (6) is located on one side of the heat exchanger (1), and the control cabinet (6) is electrically connected to the electromagnetic adsorption coil (2), the sensor (3), the electric gate valve (4), and the electric drain valve (5).

2. The electromagnetic filtering cleaning and sewage discharge device of a water source heat pump according to claim 1, characterized in that: The outside of the electromagnetic adsorption coil (2) is coated with an anti-corrosion layer.

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