Magnetic filter

Abstract

The utility model provides a magnetic filter belongs to mechanical technical field. It has solved the problem of high cost and big leakage hidden danger caused by the isolation of the magnetic filter and the pipeline when cleaning impurities. It includes lower casing, the upper casing with water inlet and water outlet, the filter screen is equipped in the lower casing, the rubber sealing sleeve of the lower end opening cylinder is fixedly connected in the upper casing, the side of rubber sealing sleeve is equipped with two through -hole, two through -hole respectively with water inlet and water outlet intercommunication, the rubber sealing sleeve's inboard rotates and is provided with the plug of cylindrical shape, the bottom center area of plug is equipped with the flow -guiding hole, the plug still is equipped with the flow -guiding groove, the flow -guiding groove penetrates the bottom of plug, the side of plug is equipped with water pass -through hole one and water pass -through hole two with flow -guiding hole intercommunication with flow -guiding groove intercommunication respectively, when water pass -through hole one and one of through -hole intercommunication, water pass -through hole two and another through -hole intercommunication, the upper end of filter screen is located in the flow -guiding hole. It has the advantages such as low cost, small leakage hidden danger.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a magnetic filter. Background Technology

[0002] In existing water systems, to prevent iron particles in the pipes from damaging boilers and other components, magnetic filters are currently installed in the pipes to adsorb the iron particles. For example, a magnetic filter with patent application number 202023276169.X includes a filter body and an input end and an output end respectively located at the left and right ends of the filter body. Inside the filter body is a water-passing cavity through which water flows. A cap is threaded to the bottom of the filter body. The water-passing cavity contains a filter screen for filtering impurities in the water flow and a magnetic rod for adsorbing iron mineral impurities in the water flow. A locking nut is attached to the top of the filter body. The inner wall of the locking nut has an axially outwardly extending bushing. The magnetic rod is located inside the bushing. The filter body is connected to a sealed lower cover, and a filter screen frame for installing the filter screen is fitted outside the bushing. The bottom of the filter screen frame is spherical, and there is a cavity inside the filter screen frame for the bushing to fit into. Inside the water-passing cavity, at the lower part of the filter screen, there is a water-separating seat integrally formed with the inner wall of the filter body. The input end is connected to the filter body through an inlet pipe, the inner end of which extends into the filter body and connects to the inside of the water-separating seat. The output end is connected to the filter body through an outlet pipe. Water flows sequentially through the input end and the inlet pipe into the water-separating seat, then through the filter screen located above the water-separating seat, and finally flows out through the outlet pipe. It utilizes a magnetic rod inside the filter to adsorb iron mineral impurities in the water, while simultaneously filtering impurities through the internal filter screen.

[0003] After prolonged use, the impurities attracted by the magnetic rods need to be cleaned to prevent excessive impurity buildup and potential rod failure. Since the magnetic rods are fixed to the locking nut, cleaning simply requires removing the locking nut from the filter body. To isolate the filter body from the piping and prevent leakage during rod cleaning, the magnetic filter has ball valves at both the inlet and outlet positions within the filter body. Operating these two valves simultaneously isolates both the inlet and outlet. Essentially, this magnetic filter adds two extra ball valves, increasing costs and creating more potential leakage points and risks. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a magnetic filter that solves the problems of high cost and significant leakage risks associated with isolating the magnetic filter from the pipeline during impurity cleaning.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A magnetic filter includes a lower housing, an upper housing connected to the upper end of the lower housing and having an inlet and an outlet on each side, and a magnetic rod vertically arranged and detachably connected to the lower housing. The lower housing also contains a filter screen, with the magnetic rod located inside the filter screen. The filter is characterized by having a rubber sealing sleeve with an open lower end fixedly connected inside the upper housing. The rubber sealing sleeve has two through holes on its side, one communicating with the inlet and the other with the outlet. A cylindrical part is rotatably arranged inside the rubber sealing sleeve. The stopcock is shaped like a valve, with its outer peripheral wall abutting against the inner peripheral wall of the rubber sealing sleeve. A flow guide hole is provided in the central area of ​​the bottom of the stopcock, and a flow guide groove is also provided inside the stopcock, which runs through the bottom of the stopcock. The side of the stopcock is provided with a water passage hole one that communicates with the flow guide hole and a water passage hole two that communicates with the flow guide groove. When water passage hole one is connected to one of the through holes, water passage hole two is connected to the other through hole. A connecting rod is protruding from the central area of ​​the top of the stopcock. The connecting rod extends out of the upper housing and is fixedly connected to the operating component. The upper end of the filter screen is located inside the flow guide hole.

[0007] Under normal use, the stopcock is in a state where water passage hole one and water passage hole two are connected to the two through holes of the rubber sealing sleeve, respectively. Water flows in from the inlet, through water passage hole one and the guide hole of the stopcock, into the inside of the filter screen, and then flows out through the filter screen, the guide groove, water passage hole two, and the outlet. Iron impurities mixed in the water are attracted by the magnetic rod. When it is necessary to clean the iron impurities, the user rotates the operating component to rotate the stopcock until water passage hole one is misaligned with the through hole on the rubber sealing ring. This causes the outer peripheral wall of the stopcock to abut against the two through holes of the rubber sealing ring, forming a blockage. This disconnects the inlet and outlet, isolating the magnetic filter from the pipeline. The user can then remove the magnetic rod from the lower housing and perform the sewage discharge operation, allowing the iron impurities to be discharged along with the water remaining in the magnetic filter.

[0008] This magnetic filter features a rubber sealing sleeve with an open bottom fixed inside the upper housing. A cylindrical plug is rotatably mounted inside the rubber sealing sleeve. The outer circumferential wall of the plug abuts against the inner circumferential wall of the rubber sealing sleeve to form a seal. A guide hole is provided in the center of the bottom of the plug, and a guide groove penetrating the bottom of the plug is provided inside the plug. The side of the plug has a water passage hole one communicating with the guide hole and a water passage hole two communicating with the guide groove. When water passage hole one is connected to one of the through holes, water passage hole two is connected to the other through hole. This allows the user to control the isolation of the magnetic filter from the pipeline simply by rotating the plug, thus eliminating the need to connect ball valves to the inlet and outlet for operation. This greatly reduces production costs and shortens the length of the magnetic filter along the water flow direction. In particular, it also reduces the risk of leakage caused by connecting two additional ball valves.

[0009] Moreover, the inner circumferential wall of the rubber sealing sleeve is completely attached to the outer circumferential wall of the plug, which can achieve a better sealing effect when the water passage hole one and water passage hole two are staggered from the two through holes.

[0010] In the aforementioned magnetic filter, the outer peripheral wall of the rubber sealing sleeve is provided with at least one protrusion, which is strip-shaped in the vertical direction, and the inner side of the upper housing is provided with a corresponding strip-shaped groove, with the protrusion located in the groove.

[0011] The inner circumferential wall of the rubber sealing sleeve abuts against the outer circumferential wall of the cock. When the cock rotates, it will inevitably exert a circumferential force on the rubber sealing sleeve. To address this, a protrusion is provided on the outer circumferential wall of the rubber sealing sleeve, and a corresponding groove is provided on the inner side of the upper housing. The protrusion is located within the groove. This effectively improves the circumferential connection between the rubber sealing sleeve and the upper housing, ensuring that the cock will not rotate along with the rubber sealing sleeve even after prolonged use.

[0012] In the aforementioned magnetic filter, the guide groove is an arc-shaped groove with an arc greater than 180°.

[0013] The above settings can increase the water flow area of ​​the guide channel.

[0014] In the aforementioned magnetic filter, the upper housing is provided with an annular mounting groove, and a retaining spring is provided in the annular mounting groove. The retaining spring extends out of the annular mounting groove, and an annular washer is provided on the upper side of this part of the retaining spring. The bottom of the valve rests against the washer.

[0015] During installation, insert the plug into the inside of the rubber sealing sleeve, then place an annular washer against its bottom, and finally install the snap ring into the annular mounting groove. The snap ring will abut against the lower side of the washer, thus positioning the plug vertically inside the rubber sealing sleeve.

[0016] In the aforementioned magnetic filter, the inner wall of the lower housing is provided with an abutment step, and the lower end of the guide hole is provided with a positioning step. The two ends of the filter screen abut against the abutment step and the positioning step, respectively.

[0017] The lower end of the filter screen rests against the abutment step. After the upper and lower housings are connected, the upper end of the filter screen extends into the flow guide hole of the stopcock and rests against the positioning step. This positions the filter screen vertically, ensuring that water does not leak from the upper or lower end of the filter screen and must be filtered first. Through this design, the stopcock serves both to open or close the magnetic filter and to position the filter screen.

[0018] In the aforementioned magnetic filter, the operating component is in the shape of a cover and covers the top of the upper housing. A boss protrudes from the center of the top of the upper housing, through which a connecting rod passes. An arc-shaped limiting groove is provided on the side of the boss, with an arc of 90°. A limiting block is integrally fixed to the inner top wall of the operating component, and the limiting block is located within the arc-shaped limiting groove.

[0019] When the rotating operating component drives the valve to rotate together, the limiting block will move along the arc-shaped limiting groove. The cooperation between the limiting block and the arc-shaped limiting groove can limit the rotation angle and rotation direction of the valve.

[0020] In the aforementioned magnetic filter, the top outer edge of the upper housing is provided with a mating step, the bottom of the operating member abuts against the mating step, and the top of the operating member is provided with a protruding ear.

[0021] The bottom of the operating component rests against the mating step on the top of the upper housing, which improves the overall integrity. The protruding lug on the top of the operating component facilitates user operation via this lug.

[0022] In the aforementioned magnetic filter, an annular shoulder is provided on the outer periphery of the lower housing near the upper end. The upper housing is fitted over the upper end of the lower housing and abuts against the annular shoulder. A locking nut is fitted over the lower housing, and the locking nut is fastened to the lower side of the annular shoulder and threaded to the lower end of the upper housing.

[0023] With the above settings, the upper and lower shells are connected vertically, while the upper shell can rotate relative to the lower shell. This allows the direction of the inlet and outlet to be adjusted according to the actual installation environment.

[0024] Compared with existing technologies, this magnetic filter uses a rubber sealing sleeve with an open bottom fixed inside the upper housing. A cylindrical plug is rotatably installed inside the rubber sealing sleeve. The outer peripheral wall of the plug abuts against the inner peripheral wall of the rubber sealing sleeve to form a seal. A guide hole is provided in the central area of ​​the bottom of the plug, and a guide groove is provided inside the plug that runs through its bottom. The side of the plug is provided with a water passage hole one communicating with the guide hole and a water passage hole two communicating with the guide groove. When water passage hole one is connected to one of the through holes, water passage hole two is connected to the other through hole. This allows the user to control the isolation of this magnetic filter from the pipeline simply by rotating the plug. This eliminates the need to connect ball valves to the inlet and outlet for operation, greatly reducing production costs and shortening the length of the magnetic filter along the water flow direction, thus reducing the risk of leakage caused by connecting two additional ball valves. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the magnetic filter.

[0026] Figure 2 This is a cross-sectional view of the magnetic filter.

[0027] Figure 3 yes Figure 2 Sectional view along the AA direction.

[0028] Figure 4 This is a schematic diagram of a rubber sealing sleeve.

[0029] Figure 5 This is a schematic diagram of the cock.

[0030] Figure 6 This is an exploded view of the top position of this magnetic filter.

[0031] Figure 7 This is a exploded view of the top position of this magnetic filter from another angle.

[0032] In the diagram: 1. Lower shell; 1a. Abutment step; 1b. Columnar part; 1c. Mounting hole; 1d. Drain outlet; 1e. Annular shoulder; 2. Upper shell; 2a. Inlet; 2b. Outlet; 2c. Groove; 2d. Boss; 2e. Arc-shaped limiting groove; 2f. Mating step; 3. Magnetic rod; 3a. Rod body; 3b. Plug; 3c. Magnetic block; 3d. Stop; 4. Filter screen; 5. Rubber 5a. Sealing sleeve; 5b. Through hole; 6. Protrusion; 6. Plug; 6a. Guide hole; 6b. Guide groove; 6c. Water passage hole one; 6d. Water passage hole two; 6e. Connecting rod; 6f. Positioning step; 7. Operating component; 7a. Connecting hole; 7b. Ear; 8. Limiting block; 9. Fixing screw; 10. Snap ring; 11. Washer; 12. Drain valve core; 13. Sealing ring; 14. Locking nut. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a magnetic filter includes a lower housing 1, an upper housing 2 connected to the upper end of the lower housing 1 and having an inlet 2a and an outlet 2b on both sides respectively, and a magnetic rod 3 vertically arranged and detachably connected to the lower housing 1. A filter screen 4 is also provided inside the lower housing 1, with the magnetic rod 3 located inside the filter screen 4. A rubber sealing sleeve 5 is fixedly connected inside the upper housing 2. The rubber sealing sleeve 5 is a cylindrical shape with an open lower end. The outer peripheral wall of the rubber sealing sleeve 5 abuts against the inner peripheral wall of the upper housing 2, and the top wall of the rubber sealing sleeve 5 abuts against the inner top wall of the upper housing 2. Two through holes 5a are provided on the side of the rubber sealing sleeve 5, one of which communicates with the inlet 2a, and the other through hole 5a communicates with the outlet 2b. The rubber sealing sleeve 5 is integrally formed on the inner side of the upper shell 2 by vulcanization. The outer peripheral wall of the rubber sealing sleeve 5 is provided with at least one protrusion 5b, which is strip-shaped in the vertical direction. Correspondingly, the inner side of the upper shell 2 is provided with a strip-shaped groove 2c, and the protrusion 5b is located in the groove 2c. A cylindrical plug 6 is rotatably mounted on the inner side of the rubber sealing sleeve 5. The outer peripheral wall of the plug 6 abuts against the inner peripheral wall of the rubber sealing sleeve 5 to form a seal. A guide hole 6a is provided in the central area of ​​the bottom of the plug 6. A guide groove 6b is also provided inside the plug 6. The guide groove 6b is an arc-shaped groove with an arc greater than 180°. The guide groove 6b penetrates the bottom of the plug 6. A water passage hole 1 6c and a water passage hole 2 6d are respectively provided on the side of the plug 6. The water passage hole 1 6c is connected to the guide hole 6a, and the water passage hole 2 6d is connected to the guide groove 6b. When the water passage hole 1 6c is connected to one of the through holes 5a, the water passage hole 2 6d is connected to the other through hole 5a. The upper end of the filter screen 4 is located inside the guide hole 6a.

[0035] like Figure 2 , Figure 6 and Figure 7As shown, a connecting rod 6e protrudes from the center of the top of the stopcock 6. The connecting rod 6e extends out of the upper housing 2 and is fixedly connected to an operating component 7. The operating component 7 is cap-shaped and covers the top of the upper housing 2. A boss 2d protrudes from the center of the top of the upper housing 2. The connecting rod 6e passes through the boss 2d. An arc-shaped limiting groove 2e is provided on the side of the boss 2d. The arc of the arc-shaped limiting groove 2e is 90°. A limiting block 8 is integrally fixed to the inner top wall of the operating component 7. The limiting block 8 is located within the arc-shaped limiting groove 2e. In this embodiment, the top of the connecting rod 6e is flat and rectangular. The inner top wall of the operating component 7 is provided with a connecting hole 7a whose shape matches the top of the connecting rod 6e. The top of the connecting rod 6e is located within the connecting hole 7a. The operating component 7 and the connecting rod 6e are connected by a fixing screw 9 that passes through the connecting hole 7a and is threaded into the top of the connecting rod 6e. The upper housing 2 has a mating step 2f on its top outer edge. The bottom of the operating member 7 abuts against the mating step 2f, and the top of the operating member 7 has a protruding ear 7b. The upper housing 2 has an annular mounting groove, and a retaining spring 10 is provided in the annular mounting groove. The retaining spring 10 extends out of the annular mounting groove, and an annular washer 11 is provided on the upper side of the retaining spring 10 extending out of the annular mounting groove. The bottom of the plug 6 abuts against the washer 11.

[0036] like Figure 1 As shown, in this embodiment, the inner wall of the lower housing 1 is provided with an abutment step 1a, the lower end of the filter screen 4 abuts against the abutment step 1a, the lower end of the guide hole 6a is provided with a positioning step 6f, and the upper end of the filter screen 4 abuts against the positioning step 6f. A columnar part 1b is provided protruding from the central area of ​​the inner bottom wall of the lower housing 1, and a mounting hole 1c is provided in the columnar part 1b. The mounting hole 1c penetrates the bottom of the lower housing 1, and the magnetic rod 3 is disposed in the mounting hole 1c. The magnetic rod 3 includes a rod body 3a, a cap 3b fixed to one end of the rod body 3a, several magnetic blocks 3c sequentially sleeved on the rod body 3a, and a stop 3d threaded to the other end of the rod body 3a. The cap 3b is threaded to the lower end of the mounting hole 1c. A drain port 1d is provided on the lower side of the lower housing 1, and a drain valve core 12 is disposed in the drain port 1d. The lower housing 1 has an annular shoulder 1e on its outer periphery near the upper end. The upper housing 2 is fitted over the upper end of the lower housing 1 and abuts against the annular shoulder 1e. The upper end of the lower housing 1 has a sealing ring 13 on its outer periphery. The sealing ring 13 abuts against the lower inner wall of the upper housing 2. The lower housing 1 is fitted with a locking nut 14, which is fastened to the lower side of the annular shoulder 1e and threaded to the lower end of the upper housing 2.

[0037] Under normal operating conditions, the stopcock 6 is in a state where the first water passage hole 6c and the second water passage hole 6d are respectively connected to the two through holes 5a of the rubber sealing sleeve 5. Water flows in from the inlet 2a, and flows through the first water passage hole 6c and the guide hole 6a of the stopcock 6 into the inner side of the filter screen 4. After being filtered by the filter screen 4, it flows out through the guide groove 6b, the second water passage hole 6d and the outlet 2b. Iron-containing impurities mixed in the water will be attracted by the magnetic rod 3. When it is necessary to clean iron-containing impurities, the user rotates the operating component 7 to rotate the stopcock 6 until the water passage hole 6c is offset from the through hole 5a on the rubber sealing ring 13. In this way, the outer peripheral wall of the stopcock 6 will abut against the two through holes 5a of the rubber sealing ring 13 to form a blockage. This will disconnect the water inlet 2a and the water outlet 2b, thus isolating the magnetic filter from the pipeline. Then, the user removes the magnetic rod 3 from the lower housing 1 and operates the drain valve core 12 to open the drain port 1d. After the attraction of the magnetic rod 3 is lost, the iron-containing impurities will be discharged along with the water remaining in the magnetic filter.

[0038] This magnetic filter uses a rubber sealing sleeve 5 with an open bottom fixed inside the upper housing 2, and a cylindrical plug 6 rotatably mounted inside the rubber sealing sleeve 5. The outer peripheral wall of the plug 6 abuts against the inner peripheral wall of the rubber sealing sleeve 5 to form a seal. A guide hole 6a is provided in the central area of ​​the bottom of the plug 6, and a guide groove 6b is provided inside the plug 6, penetrating the bottom of the plug 6. The side of the plug 6 is provided with a water passage hole 6c communicating with the guide hole 6a and a water passage hole 6d communicating with the guide groove 6b. When the water passage hole 6c is connected to one of the through holes 5a, the water passage hole 6d is connected to the other through hole 5a. This allows the user to control the isolation of this magnetic filter from the pipeline simply by rotating the plug 6, thus eliminating the need to connect ball valves to the inlet 2a and outlet 2b for operation, greatly reducing production costs and shortening the length of the magnetic filter along the water flow direction. In particular, it also eliminates the leakage risk caused by connecting two additional ball valves.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A magnetic filter, comprising a lower housing (1), an upper housing (2) connected to the upper end of the lower housing (1) and having an inlet (2a) and an outlet (2b) on both sides respectively, and a magnetic rod (3) vertically arranged and detachably connected to the lower housing (1), wherein the lower housing (1) is further provided with a filter screen (4), and the magnetic rod (3) is located inside the filter screen (4), characterized in that, The upper housing (2) is internally fixed with a cylindrical rubber sealing sleeve (5) that is open at the lower end. The side of the rubber sealing sleeve (5) is provided with two through holes (5a), one of which is connected to the inlet (2a) and the other is connected to the outlet (2b). A cylindrical plug (6) is rotatably provided on the inner side of the rubber sealing sleeve (5). The outer peripheral wall of the plug (6) abuts against the inner peripheral wall of the rubber sealing sleeve (5). A flow guide hole (6a) is provided in the center area of ​​the bottom of the plug (6), and a flow guide groove (6b) is also provided inside the plug (6) to guide the flow. The groove (6b) penetrates the bottom of the stopcock (6). The side of the stopcock (6) is provided with a water passage hole 1 (6c) that communicates with the guide hole (6a) and a water passage hole 2 (6d) that communicates with the guide groove (6b). When the water passage hole 1 (6c) is connected to one of the through holes (5a), the water passage hole 2 (6d) is connected to the other through hole (5a). A connecting rod (6e) is provided protruding from the top center area of ​​the stopcock (6). The connecting rod (6e) extends out of the upper housing (2) and is fixedly connected to the operating component (7). The upper end of the filter screen (4) is located inside the guide hole (6a).

2. A magnetic filter according to claim 1, characterized in that, The outer peripheral wall of the rubber sealing sleeve (5) is provided with at least one protrusion (5b), which is strip-shaped in the vertical direction. The inner side of the upper shell (2) is provided with a corresponding strip-shaped groove (2c), and the protrusion (5b) is located in the groove (2c).

3. A magnetic filter according to claim 1 or 2, characterized in that, The flow guide groove (6b) is an arc-shaped groove with an arc greater than 180°.

4. A magnetic filter according to claim 3, characterized in that, The upper housing (2) is provided with an annular mounting groove, and a retaining ring (10) is provided in the annular mounting groove. The retaining ring (10) extends out of the annular mounting groove and an annular washer (11) is provided on the upper side of the retaining ring (10) in this part. The bottom of the plug (6) abuts against the washer (11).

5. A magnetic filter according to claim 4, characterized in that, The inner wall of the lower housing (1) is provided with an abutting step (1a), and the lower end of the guide hole (6a) is provided with a positioning step (6f). The two ends of the filter screen (4) abut against the abutting step (1a) and the positioning step (6f) respectively.

6. A magnetic filter according to claim 1, characterized in that, The operating component (7) is in the shape of a cover and covers the top of the upper housing (2). A boss (2d) is provided in the center area of ​​the top of the upper housing (2). The connecting rod (6e) passes through the boss (2d). An arc-shaped limiting groove (2e) is provided on the side of the boss (2d). The arc of the arc-shaped limiting groove (2e) is 90°. A limiting block (8) is integrally fixed to the inner top wall of the operating component (7). The limiting block (8) is located in the arc-shaped limiting groove (2e).

7. A magnetic filter according to claim 6, characterized in that, The upper housing (2) has a mating step (2f) on the outer edge of the top, the bottom of the operating member (7) abuts against the mating step (2f), and the top of the operating member (7) is provided with an ear (7b).

8. A magnetic filter according to claim 1, characterized in that, The lower housing (1) has an annular shoulder (1e) on its outer periphery near the upper end. The upper housing (2) is fitted over the upper end of the lower housing (1) and abuts against the annular shoulder (1e). The lower housing (1) is fitted with a locking nut (14), which is fastened to the lower side of the annular shoulder (1e) and threaded to the lower end of the upper housing (2).

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