A purification device for circulating water in building heating systems

Abstract

This utility model belongs to the technical field of purification devices and discloses a purification device for circulating water in building heating systems. The device includes a housing with a drain valve and an exhaust valve. The housing is equipped with a magnetic rod, a baffle, a first pipe, and a second pipe. The first pipe has an outlet, and the second pipe has two inlets. This structural design significantly reduces pressure loss, decreases the extra energy consumption of the circulating pump, ensures uniform heating temperature in all areas of the building, and increases the dirt removal efficiency with increasing flow rate. Furthermore, the pressure drop remains stable during operation, eliminating the need for frequent shutdowns for disassembly and cleaning, reducing maintenance workload, and preventing heating interruptions. Regular drainage via the drain valve effectively avoids the risk of blockage, reduces the probability of filter element damage and component replacement, minimizes leakage risks, and lowers the overall lifecycle maintenance cost of the system. The installation of the magnetic rod enhances the separation efficiency of magnetic impurities, preventing them from forming a scale layer that affects heat exchange efficiency and exacerbates pipe corrosion.

Description

Technical Field

[0001] This utility model belongs to the field of purification device technology, specifically relating to a purification device for circulating water in building heating systems. Background Technology

[0002] In building heating systems, the purification of circulating water is a crucial step in ensuring stable system operation. During long-term circulation, heating circulating water easily mixes with particulate impurities from pipe corrosion, water sediment, and external dust and other pollutants. If these are not removed in time, they can lead to scale buildup in heat exchangers and pipe blockages, thereby affecting system heat exchange efficiency, increasing energy consumption, and even shortening equipment lifespan. Among existing building heating circulating water purification devices, the Y-type filter is the most widely used. This type of device traps impurities through a built-in filter screen; however, due to structural design limitations, the fluid must change its flow direction when passing through the screen, resulting in significant pressure loss. This pressure loss not only requires the circulating pump to consume more energy to maintain system flow but may also cause insufficient circulating water flow in some areas of the building due to system pressure imbalance, affecting the uniformity of heating temperature.

[0003] While some purification devices have attempted to optimize their filtration structures, their dirt removal efficiency remains significantly limited. Firstly, their impurity retention capacity is significantly affected by the circulating water flow rate. When system load adjustments lead to a decrease in flow rate, fine particulate impurities easily pass through the filter elements with the water flow, failing to be effectively removed. Secondly, as operating time increases, the dirt trapped inside the device gradually accumulates, causing a continuous increase in fluid flow resistance and a sustained increase in system pressure drop. To avoid excessive pressure drop affecting system operation, frequent shutdowns and disassembly for dirt cleaning are necessary. This not only increases the workload of maintenance personnel but also easily causes heating interruptions, impacting the user experience. Meanwhile, existing purification devices generally lack anti-clogging mechanisms. When impurities accumulate on the surface of the filter element, they can easily clog the filter channels. In this case, the device needs to be completely disassembled. The cleaning process may not only damage the filter element and increase the cost of replacing parts, but also compromise the device's sealing, creating a potential for leaks. Frequent and long-term maintenance operations further increase the overall lifecycle maintenance costs of building heating systems. Existing purification devices lack dedicated separation structures for common magnetic impurities such as black iron oxide in heating circulating water, relying solely on physical filtration to effectively trap these fine magnetic particles. If these magnetic impurities remain in the circulating water system for a long time, they will adhere to the heat exchanger tube walls, forming a magnetic scale layer. This reduces the heat exchanger's efficiency, leading to increased heating energy consumption; furthermore, it exacerbates corrosion of the pipe walls, shortening the service life of the heating pipes.

[0004] Furthermore, existing purification devices have poor installation adaptability. Most devices are structurally limited, allowing installation only in specific orientations (such as vertical or horizontal), making them unsuitable for the diverse pipe layouts in building heating systems, such as confined spaces and pipe bends. To meet installation requirements, modifications to existing pipes are often necessary, increasing installation difficulty and cost, and potentially disrupting the system's original stability and affecting the normal flow of heating circulating water. In summary, current building heating circulating water purification devices have shortcomings in pressure loss control, stability of decontamination efficiency, anti-clogging capability, handling of magnetic impurities, and installation flexibility. They are unable to meet the operational requirements of building heating systems for high efficiency, stability, and low maintenance costs, and a better purification technology solution is urgently needed to solve these problems. Utility Model Content

[0005] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide a purification device for circulating water in building heating systems.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A purification device for circulating water in building heating systems includes a housing. The housing is equipped with a drain valve and an air vent valve, which are positioned opposite each other at both ends of the housing. A magnetic rod is mounted on the side of the housing near the drain valve, with its working end located inside the housing. A baffle is installed inside the housing, but it does not completely seal the interior of the housing. A first pipe and a second pipe are mounted on the side of the housing near the air vent valve, and the first and second pipes are symmetrically arranged with a gap between them. The first pipe has an outlet, the direction of which is perpendicular to the input direction of the drain valve. The second pipe has two inlets, symmetrically arranged, with their orientation directly opposite the drain valve and the air vent valve.

[0007] Furthermore, the housing is provided with a spiral hole, and the magnetic rod is installed in the spiral hole by means of a threaded connection. This design allows for quick, convenient, and easy installation and replacement, while also ensuring sealing.

[0008] Furthermore, the baffle is provided with arc-shaped holes. This design allows deposited objects to pass through the baffle and accumulate in the area of ​​the drain valve, which is beneficial for subsequent unified discharge.

[0009] Furthermore, the connections between the magnetic rod, the first pipe, and the second pipe and the housing are all sealed to prevent leakage.

[0010] Furthermore, the shell is capsule-shaped, and the inner wall is smoothly polished. This design allows the capsule shape to facilitate the deposition and concentration of objects, while the smooth polishing process facilitates the self-sinking of objects on the inner wall of the shell.

[0011] The beneficial effects of using this utility model are as follows: The structural design of this utility model significantly reduces pressure loss, reduces the extra energy consumption of the circulating pump, avoids system pressure imbalance, and ensures the uniformity of heating temperature in all areas of the building. The cleaning efficiency of this invention increases with the increase of flow rate, and the pressure drop is stable during operation. It does not require frequent shutdowns for disassembly and cleaning, thus reducing maintenance workload and avoiding heating interruptions. This utility model can use a drain valve to regularly discharge sewage, effectively avoiding the risk of blockage, reducing the probability of filter element damage and parts replacement, reducing the risk of water leakage, and reducing the system's full life cycle maintenance cost. The installation of the magnetic rod in this invention can enhance the separation efficiency of magnetic impurities, effectively remove fine magnetic particles such as black iron oxide, and prevent them from forming a fouling layer that affects heat exchange efficiency and aggravates pipeline corrosion. The structure of this utility model allows the device to be installed in any vertical or horizontal position, adapting to diverse building pipe layouts without requiring modification of existing pipes, reducing installation difficulty and cost, and ensuring system operational stability. Attached Figure Description

[0012] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of an embodiment of a purification device for circulating water in building heating according to the present invention; Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of a purification device for circulating water in building heating according to the present invention; Figure 3 This is a partial structural schematic diagram of an embodiment of a purification device for circulating water in building heating according to the present invention; The symbols for the main components are explained below: 1. Housing; 2. Drain valve; 3. Vent valve; 4. Magnetic rod; 5. Baffle; 6. First pipe; 7. Second pipe; 8. Outlet; 9. Inlet; 10. Spiral hole; 51. Arc-shaped hole. Detailed Implementation

[0013] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments. Example

[0014] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model discloses a purification device for circulating water in building heating systems, comprising a housing 1. The housing 1 is provided with a drain valve 2 and an air vent valve 3, which are disposed opposite to each other at both ends of the housing 1. A magnetic rod 4 is installed on the side of the housing 1 near the drain valve 2, with the working end of the magnetic rod 4 placed inside the housing 1. A baffle 5 is installed inside the housing 1, but the baffle 5 does not completely seal the interior of the housing 1. A first pipe 6 and a second pipe 7 are installed on the side of the housing 1 near the air vent valve 3, which are symmetrically arranged with a gap between them. The first pipe 6 has an outlet 8, which is perpendicular to the input end of the drain valve 2. The second pipe 7 has two inlets 9, which are symmetrically arranged on the second pipe 7, and the inlets 9 are oriented directly opposite the drain valve 2 and the air vent valve 3.

[0015] In this embodiment, the fluid in the heating system enters the interior of the shell 1 through the outlet 8 on the first pipe 6. Because the outlet 8 is lateral to the shell 1, under the continuous flow of power, the fluid impacts the inner wall of the shell 1 and then undergoes a spiral motion under the action of the internal structure of the filter. Heavier impurities are thrown towards the four walls of the shell 1 under the action of centrifugal force and then sink under the action of gravity. After flowing downwards for a while, the water turns upwards, and part of it directly enters the second pipe 7 through the outlet 8 on the lower side of the second pipe 7, and then is discharged into the subsequent heating system. Another part of the pipeline passes through the gap between the first pipe 6 and the second pipe 7, enters the second pipe 7 from the outlet 8 on the upper side of the second pipe 7, and then exits into the subsequent heating system pipeline; while the residue is deposited at the bottom of the shell 1. Because the baffle 5 is not completely closed, when the water carrying impurities flows to the unclosed position, the impurities are separated from the fluid under the action of centrifugal force and gravity. The separated impurities will settle to the bottom divided by the baffle 5. The magnetic rod 4 below the baffle 5 can adsorb the magnetic rust impurities in the system and prevent them from being recycled back into the circulating water system. In addition, if there is gas in the fluid, it can be discharged through the exhaust valve at the top to avoid cavitation in the heating pipes. It should be noted that the inside of the shell 1 needs to be drained regularly. When draining, remove the magnetic rod 4 and open the drain valve 3 to discharge the impurities that have settled at the bottom. Regular draining can ensure that the filter continues to work effectively, ensure that the water quality of the heating system meets the circulation standards, and ensure the stability and heating efficiency of the system. Example

[0016] like Figure 1 , Figure 2 As shown, the housing 1 is provided with a spiral hole 10, and the magnetic rod 4 is installed in the spiral hole 10 by means of a threaded connection; In this implementation, the internal thread of the spiral hole 10 is matched with the external thread at the end of the magnetic rod 4. Furthermore, an annular sealing groove is formed inside the opening of the spiral hole 10, and a high-temperature resistant sealing ring is embedded in the groove. The threaded end of the magnetic rod 4 can be machined with a hexagonal groove or an anti-slip knob structure. During installation, it is not necessary to disassemble the entire housing; simply align the external thread of the magnetic rod 4 with the internal thread of the spiral hole 10 by hand or with a regular wrench, and tighten clockwise until the end of the magnetic rod is fully engaged with the O-ring in the sealing groove. For replacement, loosen the magnetic rod 4 by unscrewing it in the opposite direction for quick removal for cleaning or replacement. The entire process does not require interrupting the heating system, and the disassembly and assembly of a single magnetic rod can be completed in a short time. Compared to existing purification devices that require disassembly of the housing to maintain the magnetic components, this thread... The connection method does not require damaging the overall structure of the device. The magnetic rods can be disassembled and assembled using conventional tools, which greatly shortens maintenance time, avoids heating interruptions caused by device disassembly, and reduces the workload of maintenance personnel. At the same time, the double sealing structure of the high-temperature resistant sealing ring built into the spiral hole 10 and the thread engagement can effectively prevent circulating water from leaking from the connection gap, solving the problem of water leakage caused by seal failure after disassembly of existing devices. It is suitable for the long-term pressure operation requirements of building heating systems, and the standard thread design is compatible with magnetic rods 4 of different lengths and magnetic strengths. When the magnetism weakens or is damaged, only the magnetic rod needs to be replaced instead of the entire purification device, reducing the cost of parts replacement. At the same time, the universality of the threaded connection can be adapted to different specifications of the housing 1, improving the interchangeability of device parts. Example

[0017] like Figure 3 As shown, the baffle 5 is provided with an arc-shaped hole 51; In this embodiment, the shape of the baffle 5 is adapted to the inner wall of the shell to form a fluid guiding channel. The size of the arc-shaped holes 51 is adapted to the particle size of fine particles commonly found in heating circulating water, and the openings of the arc-shaped holes 51 all face the area where the drain valve 2 is located. When the heating circulating water carrying sediment flows through the baffle 5, the fluid is blocked by the baffle 5 and its flow direction is changed. Under the action of gravity and water flow thrust, the fine sediments smoothly enter the drain valve area below the baffle through the arc-shaped holes on the edge, allowing the sediments to be directionally accumulated to the drain valve. The corresponding inner cavity area of ​​the shell is filled with sediment, preventing deposits from accumulating on the baffle surface or other parts of the shell. Through the directional guidance of the edge notch, the problem of sediment accumulation and frequent disassembly and cleaning caused by the existing baffle structure is completely solved. The sediment is efficiently gathered in the area of ​​the drain valve 2, and can be naturally accumulated without additional power. During subsequent discharge, only the drain valve 2 needs to be opened to discharge the accumulated sediment at once without disassembling the baffle, which greatly simplifies operation and maintenance, reduces the downtime of the heating system, and ensures the long-term stable operation of the purification device. Example

[0018] like Figure 1As shown, the connections between the magnetic rod 4, the first pipe 6, the second pipe 7, and the housing 1 are all sealed. In this implementation case, when the magnetic rod 4 is connected to the spiral hole 10 of the shell 1, an annular sealing groove is preset inside the opening of the spiral hole 10, and a high-temperature resistant sealing ring is embedded in the groove; the first pipe 6 and the second pipe 7 serve as the inlet and outlet channels for heating circulating water, and are connected to the shell 1 by a flange structure, direct sealing welding, or integral molding. At the same time, high-temperature resistant sealant is filled in the gap between the outer wall of the pipe and the shell connection port to form a secondary seal; effectively blocking the leakage of circulating water from each connection point, avoiding water leakage damage to building walls, floors and other facilities, reducing maintenance costs. Compared with the problem of easy aging and failure of the single seal of the existing device, the multiple seals greatly improve reliability, extend the service life of the sealing components, and the sealing components are easy to disassemble and assemble. Later maintenance only requires the replacement of the sealing components, without disassembling the main body of the device, ensuring the continuous and stable operation of the heating system. Example

[0019] like Figure 1 As shown, the shell 1 is capsule-shaped and the inner wall is smooth and polished. In this implementation case, the shell 1 adopts a capsule-shaped structure design, specifically with one-piece molded hemispherical arc surfaces at both ends and a cylindrical cavity in the middle. The overall design is compatible with commonly used pipe specifications in building heating circulating water systems, and the cavity provides ample space for fluid flow and impurity settling. The inner wall of shell 1 undergoes a combination of mechanical polishing and chemical passivation, eliminating any protruding edges, depressions, or processing scratches, resulting in a continuous and smooth inner wall surface. The two arc surfaces at the capsule shape guide the heating circulating water to form a gentle vortex motion within the shell, preventing stagnant water areas from forming in corners. This allows particulate impurities and sludge in the water to be gradually pushed towards the bottom of the cylindrical cavity in the middle of the shell and the two arc surfaces under the influence of gravity. The transition area between the surface and the cylindrical section allows for concentrated deposition of impurities. The smooth grinding treatment of the inner wall significantly reduces the adhesion between impurities and the inner wall. Even if a small amount of impurities are briefly attached to the inner wall, they can quickly detach from the inner wall and settle to the deposition area under slight water flow disturbance or their own gravity, preventing impurities from accumulating on the inner wall of the shell and forming a scale layer over a long period of time. At the same time, the concentrated deposited impurities can be efficiently discharged in one go through the drain valve 2 at the bottom of the shell, eliminating the need for frequent cleaning of the inside of the shell, reducing the amount of operation and maintenance. In addition, the smooth inner wall can also reduce the frictional resistance when water flows through the shell, avoiding local pressure loss caused by the roughness of the inner wall, and ensuring the flow stability of the heating circulating water system.

[0020] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A purification device for circulating water in building heating systems, comprising a housing (1), characterized in that: The housing (1) is provided with a drain valve (2) and an exhaust valve (3). The drain valve (2) and the exhaust valve (3) are arranged opposite to each other at both ends of the housing (1). A magnetic rod (4) is installed on the side of the housing (1) near the drain valve (2). A baffle (5) is installed inside the housing (1). The baffle (5) does not completely block the inside of the housing (1). A first pipe (6) and a second pipe (7) are installed on the side of the housing (1) near the exhaust valve (3). There is a gap between the first pipe (6) and the second pipe (7). The first pipe (6) is provided with an outlet (8). The orientation of the outlet (8) is perpendicular to the input end of the drain valve (2). The second pipe (7) is provided with two inlets (9).

2. The purification device for building heating circulating water according to claim 1, characterized in that: The housing (1) is provided with a spiral hole (10), and the magnetic rod (4) is installed in the spiral hole (10) by means of a threaded connection.

3. A purification device for building heating circulating water according to claim 2, characterized in that: The baffle (5) is provided with an arc-shaped hole (51).

4. A purification device for building heating circulating water according to claim 3, characterized in that: The magnetic rod (4), the first pipe (6) and the second pipe (7) are all sealed at the connection points with the housing (1).

5. A purification device for building heating circulating water according to claim 4, characterized in that: The shell (1) is capsule-shaped and the inner wall is smooth and polished.

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