Pipeline magnetic adsorption device

Abstract

The utility model relates to a pipeline magnetic adsorption device, including setting in the filter piece of pipeline and setting the coil shell and electric cabinet of pipeline outer wall, be provided with filter hole on filter piece, the coil shell is located filter piece upstream and is internally provided with the electromagnetic coil, electric cabinet is electrically connected with electromagnetic coil and electric control valve respectively, and the power supply of electric control valve closing state, electric cabinet is supplied power to the electromagnetic coil in the coil shell, thereby make magnetic impurity adsorb on the inner wall of pipeline, and the power supply of electric control valve in the opening state, electric cabinet is powered off to the electromagnetic coil in the coil shell, and large diameter magnetic impurity is filtered by filter hole, and small diameter magnetic impurity passes through filter hole, the utility model has the advantages of: the pipeline magnetic adsorption device structure most installs in the outside of pipeline, avoids the interference of fluid in pipeline and does not need to transform pipeline, and electric cabinet is powered on or off according to the opening and closing of electric control valve and controls electromagnetic coil, thereby makes electric control valve not be damaged by magnetic impurity when closing or half opening.

Description

Technical Field

[0001] This utility model relates to the field of pipeline filtration and cleaning technology, specifically to a pipeline magnetic adsorption device. Background Technology

[0002] In industrial production, the transportation of fluids (such as lubricating oil, hydraulic oil, fuel oil, coolant, and process water) usually relies on pipelines. Valves, as an important component of pipeline connections, serve to divert, regulate flow rate, and prevent backflow. After prolonged use, pipelines typically age, and the fluid carries iron filings or other ferromagnetic impurities produced by this aging process. These impurities reduce the lifespan of valves within the pipeline.

[0003] To filter the aforementioned impurities, existing technologies employ a filter element installed inside the pipe for protection. This filter element is positioned at the front end of the valve to prevent damage from impurities. However, due to the dense mesh of this filter element, a large amount of impurities accumulates on it, narrowing the path for fluid flow through the pipe. This leads to increased water pressure and pressure on the inner wall of the pipe. Existing technology includes a Chinese utility model patent (CN220143667U) entitled "Magnetic Pipeline Filter," which discloses a filter comprising a housing, an electromagnetic structure, a cleaning structure, and a collection and treatment structure. After iron filings and impurities pass through the liquid inside the magnetic pipeline filter, activating an AC motor attracts the iron filings to the outer wall of the electromagnetic rod. When cleaning the magnetic pipeline filter is required, manually turning off the AC motor causes the iron filings to fall into the filter. Water from the storage bottle flushes the collection pipe, and the treatment tank processes the collected iron filings. However, this type of magnetic pipe filter integrates multiple components, so it is relatively large in size. It needs to be installed inside the pipe as a whole, which reduces the space available for fluid flow in the pipe and increases the flow resistance of the fluid.

[0004] Therefore, further improvements are needed to the structure of the pipeline magnetic adsorption device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a magnetic adsorption device for pipelines that avoids damage to valves by impurities, does not affect the flow state of fluid in the pipeline, and does not require modification of the on-site pipeline, in light of the above-mentioned existing technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: the pipe magnetic adsorption device is installed on the pipe for fluid flow, and the pipe is equipped with an electrically controlled valve that can control the flow state of the fluid. The pipe magnetic adsorption device includes:

[0007] A filter element is installed inside the pipeline and located upstream of the electrically controlled valve. The filter element has multiple filter holes spaced apart for filtering magnetic impurities.

[0008] Its characteristic is that it further includes:

[0009] A coil housing is disposed on the outer wall of the pipe and located upstream of the filter element, and an electromagnetic coil is disposed inside the coil housing;

[0010] An electrical control box is installed on the outer wall of the pipeline. The execution signal output terminal of the electrical control box is electrically connected to the electromagnetic coil, and the detection signal input terminal of the electrical control box is electrically connected to the electrically controlled valve.

[0011] When the electrically controlled valve is closed or partially open, the electrical control box supplies power to the electromagnetic coil inside the coil housing, causing magnetic impurities to adhere to the inner wall of the pipe. When the electrically controlled valve is open, the electrical control box de-energizes the electromagnetic coil inside the coil housing, and the magnetic impurities flow synchronously with the fluid. Large-diameter magnetic impurities are filtered by the filter holes, while small-diameter magnetic impurities pass through the filter holes.

[0012] To improve the adsorption effect, preferably, the coil housings are arranged in pairs, with each pair symmetrically arranged on the outer wall of the pipe. By symmetrically arranging the coil housings on the outer wall of the pipe, the electromagnetic coils can evenly adsorb magnetic impurities onto the inner wall of the pipe when energized, thus preventing some magnetic impurities from damaging the electrically controlled valves due to failure to be adsorbed.

[0013] For ease of fixation, preferably, each coil housing is externally connected to an electrical control box. The electrical control box supplies power to each electromagnetic coil, thereby adsorbing and fixing the coil housing to the outer wall of the pipe. The electrical control box generates a strong magnetic field when supplying power to the electromagnetic coil. This magnetic field penetrates the pipe wall and forms a magnetic circuit with the inner wall of the pipe, generating an adsorption force that firmly fixes the coil housing to the outer wall of the pipe.

[0014] The fixing method can also be designed as follows: a magnetic element is provided between each coil housing and the outer wall of the pipe. When the control box supplies a positive current to each electromagnetic coil, the magnetic fields of the electromagnetic coil and the magnetic element are superimposed, thereby fixing the coil housing and the magnetic element to the outer wall of the pipe. When the control box supplies a reverse current to each electromagnetic coil, the magnetic fields of the electromagnetic coil and the magnetic element cancel each other out, allowing the coil housing and the magnetic element to be removed from the outer wall of the pipe. Specifically, the electromagnetic coil generates a positive magnetic field when a positive current is applied, and a positive magnetic field is also generated around the magnetic element. The superposition of these magnetic fields fixes the coil housing and the magnetic element together to the pipe. When the control box supplies a reverse current, the electromagnetic coil generates a negative magnetic field, which cancels out the positive magnetic field of the magnetic element, thus facilitating the removal of the coil housing and the magnetic element from the pipe.

[0015] Alternatively, the fixing method can be designed as follows: The outer wall of the pipe is provided with mounting seats for mounting each of the coil housings, and fasteners are provided between each mounting seat and the coil housing. The mounting seats are located on the outer wall of the pipe and form a space for placing the coil housings; the mounting seats and coil housings are fixed together by fasteners.

[0016] To improve the adsorption effect, the cross-section of each coil housing is semi-circular, and the bottom wall of each coil housing is attached to the outer wall of the pipe. By making the coil housing semi-circular, the contact area between the coil housing and the outer wall of the pipe is increased, thereby improving the adsorption effect of magnetic impurities on the inner wall of the pipe. Furthermore, the coil housings arranged vertically opposite each other around the pipe make the structure of the pipe magnetic adsorption device simpler and more compact.

[0017] Furthermore, the electromagnetic coil is wound around the inner wall of the coil housing, and the distance D1 between the central axis of the electromagnetic coil and the electrically controlled valve satisfies the following condition: D1 = 300mm to 2000mm. When the distance D1 between the electromagnetic coil and the electrically controlled valve is less than 300mm, the magnetic impurities will not be completely adsorbed onto the inner wall of the pipe, causing some magnetic impurities to continue flowing with the fluid and thus damaging the electrically controlled valve. When the distance D1 between the electromagnetic coil and the electrically controlled valve is greater than 2000mm, the excessive distance will cause some magnetic impurities in the pipe farther from the electromagnetic coil to detach from the inner wall due to insufficient suction, which will also damage the electrically controlled valve.

[0018] To avoid clogging, preferably, the filter element has a conical cross-section, with its tip located upstream of the pipe and its bottom located downstream. The bottom of the filter element is provided with a fixing seat for fixing it to the inner wall of the pipe, and the diameter D2 of each filter hole satisfies: D2 = 0.5mm to 3mm. The filter element features a unique conical structure, narrower at the top and wider at the bottom. This design allows magnetic impurities to accumulate at the bottom of the filter element as the fluid flows, while the tip remains open for fluid flow, reducing the risk of clogging and extending the filter element's lifespan. The mounting base reinforces the filter element's installation position, facilitating the passage of high-velocity fluids. The filter element's filtration principle is to allow small-diameter magnetic impurities to pass through the filter holes, while intercepting large-diameter ones. When the pore size D2 is less than 0.5mm, the pores are too densely packed, intercepting both small and large-diameter magnetic impurities, leading to easy clogging. When the pore size D2 is greater than 3mm, both small and large-diameter magnetic impurities pass through simultaneously, failing to achieve effective filtration and potentially clogging pipes or even damaging other components.

[0019] The filter element can also be designed as follows: the cross-section of the filter element is parallelogram-shaped; the filter element is arranged gradually from upstream to downstream; a fixing seat is provided at the end of the filter element to fix it to the inner wall of the pipe; and the diameter D2 of each filter hole satisfies: D2 = 0.5mm to 3mm. The special inclined arrangement of the filter element allows magnetic impurities to accumulate at the downstream end of the filter element during fluid flow, while the upstream portion of the filter element remains open for fluid flow, reducing the risk of clogging and improving the service life of the filter element.

[0020] For ease of control, preferably, the electrical control box is equipped with a controller for acquiring the opening and closing signals of the electrically controlled valve, a power switch for controlling the operation of the electromagnetic coil, and a switching switch or switching circuit for controlling the direction of the current supplied to the electromagnetic coil. The controller can send signals to control the opening and closing of the power switch. Specifically, the controller can acquire and transmit the opening and closing signals of the electrically controlled valve, allowing the device to react promptly according to the valve's opening and closing status, thereby energizing or de-energizing the electromagnetic coil. The switching switch controls the direction of the current supplied to the electromagnetic coil; in the operating state, the switching switch controls the current to flow in the forward direction; in the non-operating state, the switching switch controls the current to flow in the reverse direction.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] 1. Most of the magnetic adsorption devices for pipelines are installed outside the pipeline, which will not interfere with the flow of fluid inside the pipeline, and at the same time, no on-site pipeline modifications are required.

[0023] 2. Based on the opening and closing status of the electrically controlled valve, the electrical control box can correspondingly control the opening and closing of the power switch. This allows the electromagnetic coil to be energized when the electrically controlled valve is closed or partially open, causing magnetic impurities to be attracted to the pipeline, thus preventing damage to the electrically controlled valve. When the electrically controlled valve is open, the electromagnetic coil is de-energized, and large-diameter magnetic impurities are filtered by the filter holes, while small-diameter magnetic impurities pass through the filter holes and flow synchronously with the fluid. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0025] Figure 2 for Figure 1 A longitudinal sectional view;

[0026] Figure 3 This is a front view of the filter element in Embodiment 1 of this utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of Embodiment 2 of the present invention;

[0028] Figure 5 for Figure 4 A longitudinal sectional view;

[0029] Figure 6 This is a three-dimensional structural diagram of Embodiment 3 of the present invention;

[0030] Figure 7 for Figure 6 A longitudinal sectional view;

[0031] Figure 8 This is a three-dimensional structural diagram of Embodiment 4 of the present invention;

[0032] Figure 9 for Figure 8 A longitudinal sectional view;

[0033] Figure 10 This is a longitudinal sectional view of Embodiment 5 of the present invention.

[0034] In the diagram: 1. Filter element; 11. Filter hole; 2. Coil housing; 3. Electromagnetic coil; 4. Electrical control box; 41. Controller; 42. Power switch; 43. Switch; 5. Mounting base; 6. Fastener; 7. Magnetic component; 8. Fixing base; A. Pipeline; B. Electrically controlled valve. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] Example 1:

[0037] like Figures 1 to 3 As shown, the magnetic adsorption device is installed on pipe A, which supplies fluid flow. Pipe A contains an electrically controlled valve B that controls the fluid flow. The magnetic adsorption device mainly includes a filter element 1, a coil housing 2, an electromagnetic coil 3, and an electrical control box 4. This embodiment describes each main component from left to right.

[0038] The coil housings 2 on the outer wall of pipe A are arranged in pairs. In this embodiment, a coil housing 2 is set at the upper and lower ends of pipe A to ensure sufficient adsorption force. The coil housing 2 is located upstream of the electric valve B. An electromagnetic coil 3 is wound inside each coil housing 2. Each coil housing 2 is connected to a power source that can supply power to the electromagnetic coil 3. When the electromagnetic coil 3 is energized, it can generate a strong magnetic field. The magnetic field penetrates the wall of pipe A and forms a magnetic circuit with the inner wall of pipe A, thereby generating an adsorption force. The adsorption force can firmly fix the coil housing 2 to the outer wall of pipe A, and at the same time, it can also adsorb magnetic impurities in pipe A onto the inner wall of pipe A. The distance D1 between the central axis of the electromagnetic coil 3 and the electrically controlled valve B needs to be within the range of 300mm to 2000mm. When the reserved distance D1 between the electromagnetic coil 3 and the electrically controlled valve B is less than 300mm, magnetic impurities will not be completely adsorbed onto the inner wall of the pipe A, causing some magnetic impurities to continue flowing with the fluid, thereby damaging the electrically controlled valve B. When the reserved distance D1 between the electromagnetic coil 3 and the electrically controlled valve B is greater than 2000mm, the excessive distance will cause some magnetic impurities in the pipe A, which is farther from the electromagnetic coil 3, to fall off the inner wall due to insufficient attraction, which will also cause magnetic impurities to damage the electrically controlled valve B. Therefore, in this embodiment, the preferred D1 is 1200mm.

[0039] Each coil housing 2 is externally connected to an electrical control box 4, which is installed on the outer wall of pipe A and can be positioned between the electrically controlled valve B and the coil housing 2. The execution signal output terminal of the electrical control box 4 is electrically connected to the electromagnetic coil 3, and the detection signal input terminal of the electrical control box 4 is electrically connected to the electrically controlled valve B. The electrical control box 4 contains a controller 41 for acquiring the opening and closing signals of the electrically controlled valve B and a power switch 42 for controlling whether the electromagnetic coil 3 is working. The controller 41 can acquire the opening and closing signals of the electrically controlled valve B and can also send signals to control the opening and closing of the power switch 42 of the electrical control box 4, thereby energizing or de-energizing the electromagnetic coil 3. In the working state, the power switch 42 is on; in the non-working state, the power switch 42 is off.

[0040] Filter element 1 is installed inside pipe A and upstream of electrically controlled valve B. Filter element 1 has multiple filter holes 11 spaced apart for filtering magnetic impurities. The shape of filter element 1 can be flat or three-dimensional. (Refer to...) Figure 1 and Figure 3 In this embodiment, the preferred filter element 1 has a conical cross-section. The tip of the filter element 1 is located upstream of pipe A, while its bottom end is located downstream of pipe A. A fixing seat 8 for fixing the filter element 1 to the inner wall of pipe A is provided at the bottom end. It should be noted that the advantage of the special "narrow at the top and wide at the bottom" conical structure of the filter element 1 is that magnetic impurities can accumulate at the bottom end of the filter element 1 during fluid flow, while the tip of the filter element 1 allows for fluid flow, reducing the risk of clogging and improving the service life of the filter element 1. Furthermore, to achieve selective filtration, the pore diameter D2 of each filter hole 11 ranges from 0.5mm to 3mm. Figure 3 In this embodiment, the preferred aperture D2 is 2mm. At this time, magnetic impurities with a small aperture diameter of less than 2mm can pass through the filter hole 11, while magnetic impurities with a large aperture diameter of more than 2mm can be intercepted by the filter hole 11.

[0041] The working principle of the magnetic adsorption device for pipes in this embodiment is as follows:

[0042] When the controller 41 detects that the electric valve B is closed or not fully closed, the controller 41 sends a signal and turns on the power switch 42 in the electric control box 4. The electromagnetic coil 3 is energized, so that the coil housing 2 is fixed on the outer wall of the pipe A, and the magnetic impurities in the pipe A are adsorbed on the inner wall of the pipe A.

[0043] When the controller 41 detects that the electric valve B is in the open state, the controller 41 sends a signal and turns off the power switch 42 in the electric control box 4, thereby de-energizing the electromagnetic coil 3. Magnetic impurities flow synchronously with the fluid. Large-diameter magnetic impurities are filtered by the filter element 1, while small-diameter magnetic impurities pass through the filter hole 11.

[0044] Example 2:

[0045] like Figure 4 and Figure 5 As shown, and refer to Figures 1 to 3The structure of this embodiment is basically the same as that of embodiment 1, except that the fixing method of the coil housing 2 is different. In this embodiment, a magnetic component 7 is provided below the coil housing 2. The magnetic component 7 is a permanent magnet. At the same time, the electrical control box 4 is provided with a controller 41 for collecting the opening and closing signals of the electrically controlled valve B, a power switch 42 for controlling whether the electromagnetic coil 3 works, and a switching switch 43 or a switching circuit for controlling the direction of the current supplied to the electromagnetic coil 3. In this embodiment, the switching switch 43 is preferred. In the working state, the power switch 42 works normally, and the switching switch 43 controls the current to flow in the positive direction. After the electromagnetic coil 3 is supplied with positive current, it will generate a positive magnetic field. A positive magnetic field will also be generated around the magnetic component 7. The magnetic fields of the two are superimposed to fix the coil housing 2 and the magnetic component 7 together on the pipe A. When the switching switch 43 switches the current to the reverse supply, the electromagnetic coil 3 will generate a negative magnetic field, which will cancel the positive magnetic field of the magnetic component 7, so that the coil housing 2 and the magnetic component 7 can be removed from the pipe A together.

[0046] Example 3:

[0047] like Figure 6 and Figure 7 As shown, and refer to Figures 1 to 3 The structure of this embodiment is basically the same as that of embodiment 1, except that the fixing method of the coil housing 2 is different. In this embodiment, a mounting seat 5 for each coil housing 2 is provided on the outer wall of the pipe A, and a fastener 6 is provided between each mounting seat 5 and the coil housing 2, so as to fix the coil housing 2 on the pipe A.

[0048] Example 4:

[0049] like Figure 8 and Figure 9 As shown, and refer to Figures 1 to 3 The structure of this embodiment is basically the same as that of embodiment 1, except that the shape of the coil housing 2 is different. In this embodiment, the cross-section of the coil housing 2 is semi-circular, and the bottom wall of the coil housing 2 is attached to the outer wall of the pipe A. This can increase the contact area between the coil housing 2 and the outer wall of the pipe A, thereby improving the adsorption effect of magnetic impurities on the inner wall of the pipe A. At the same time, the coil housing 2, which is arranged opposite to the top and bottom, surrounds the pipe A, making the structure of the pipe magnetic adsorption device simpler and more compact.

[0050] Example 5:

[0051] like Figure 10 As shown, and refer to Figures 1 to 3The structure of this embodiment is basically the same as that of embodiment 1, except that the structure of the filter element 1 is different. The cross-section of the filter element 1 in this embodiment is a parallelogram. The filter element 1 is arranged at an angle from upstream to downstream. The end of the filter element 1 is provided with a fixing seat 8 to fix it to the inner wall of the pipe A. The filter element 1 in this embodiment adopts a special inclined arrangement, which allows magnetic impurities to accumulate at the downstream end of the filter element 1 during the flow of fluid, while the upstream part of the filter element 1 can be used for fluid flow, reducing the risk of blockage and improving the service life of the filter element 1.

Claims

1. A magnetic adsorption device for a pipeline, disposed on a pipeline (A) for fluid flow, wherein an electrically controlled valve (B) capable of controlling the flow state of the fluid is disposed within the pipeline (A), the magnetic adsorption device comprising: A filter element (1) is disposed in the pipe (A) and located upstream of the electrically controlled valve (B). The filter element (1) is provided with a plurality of filter holes (11) for filtering magnetic impurities at intervals. Its features are, It also includes: A coil housing (2) is disposed on the outer wall of the pipe (A) and located upstream of the filter element (1), and an electromagnetic coil (3) is disposed inside the coil housing (2); An electrical control box (4) is installed on the outer wall of the pipe (A). The execution signal output terminal of the electrical control box (4) is electrically connected to the electromagnetic coil (3), and the detection signal input terminal of the electrical control box (4) is electrically connected to the electrically controlled valve (B). When the electrically controlled valve (B) is closed or partially open, the electrical control box (4) supplies power to the electromagnetic coil (3) inside the coil housing (2), thereby causing magnetic impurities to be adsorbed onto the inner wall of the pipe (A); when the electrically controlled valve (B) is open, the electrical control box (4) de-energizes the electromagnetic coil (3) inside the coil housing (2), and the magnetic impurities flow synchronously with the fluid. Large-diameter magnetic impurities are filtered by the filter holes (11), while small-diameter magnetic impurities pass through the filter holes (11).

2. The magnetic adsorption device for pipelines according to claim 1, characterized in that: The coil housings (2) are arranged in pairs, and each pair of coil housings (2) is symmetrically arranged on the outer wall of the pipe (A).

3. The magnetic adsorption device for pipelines according to claim 2, characterized in that: Each of the coil housings (2) is externally connected to an electrical control box (4), which supplies power to each electromagnetic coil (3) to adsorb and fix the coil housing (2) onto the outer wall of the pipe (A).

4. The magnetic adsorption device for pipelines according to claim 2, characterized in that: A magnetic element (7) is provided between each coil housing (2) and the outer wall of the pipe (A). When the electrical control box (4) supplies a positive current to each electromagnetic coil (3), the magnetic fields of the electromagnetic coil (3) and the magnetic element (7) are superimposed, thereby fixing the coil housing (2) and the magnetic element (7) to the outer wall of the pipe (A). When the electrical control box (4) supplies a reverse current to each electromagnetic coil (3), the magnetic fields of the electromagnetic coil (3) and the magnetic element (7) cancel each other out, thereby allowing the coil housing (2) and the magnetic element (7) to be detached from the outer wall of the pipe (A).

5. The magnetic adsorption device for pipelines according to claim 2, characterized in that: The outer wall of the pipe (A) is provided with mounting bases (5) for mounting each of the coil housings (2), and fasteners (6) are provided between each of the mounting bases (5) and the coil housings (2).

6. The magnetic adsorption device for pipelines according to claim 2, characterized in that: Each of the coil housings (2) has a semi-circular cross-section, and the bottom wall of each of the coil housings (2) is attached to the outer wall of the pipe (A).

7. The magnetic adsorption device for pipelines according to claim 1, characterized in that: The electromagnetic coil (3) is wound around the inner wall of the coil housing (2), and the distance D1 between the central axis of the electromagnetic coil (3) and the electric control valve (B) satisfies: D1 = 300mm ~ 2000mm.

8. The magnetic adsorption device for pipelines according to claim 1, characterized in that: The filter element (1) has a conical cross-section. The tip of the filter element (1) is located upstream of the pipe (A), and its bottom end is located downstream of the pipe (A). The bottom end of the filter element (1) is provided with a fixing seat (8) for fixing it to the inner wall of the pipe (A). The aperture D2 of each filter hole (11) satisfies: D2 = 0.5mm to 3mm.

9. The magnetic adsorption device for pipelines according to claim 1, characterized in that: The filter element (1) has a parallelogram cross-section. The filter element (1) is arranged at an angle from upstream to downstream. The filter element (1) is provided with a fixing seat (8) at its end to fix it to the inner wall of the pipe (A). The aperture D2 of each filter hole (11) satisfies: D2 = 0.5mm to 3mm.

10. The magnetic adsorption device for pipelines according to any one of claims 1 to 9, characterized in that: The electrical control box (4) is equipped with a controller (41) for collecting the opening and closing signals of the electrically controlled valve (B), a power switch (42) for controlling whether the electromagnetic coil (3) works, and a switching switch (43) or switching circuit for controlling the direction of the current supplied to the electromagnetic coil (3). The controller (41) can send a signal to control the opening and closing of the power switch (42).

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