Bag type filter structure convenient to clean

Abstract

The invention discloses a convenient-to-clean bag filter structure, and relates to the field of bag filters, the convenient-to-clean bag filter structure comprises a filter vat, a positioning ring is fixed on the inner wall of the filter vat, a filter basket is arranged at the top of the positioning ring, a filter bag is arranged in the filter basket, a water inlet and a water outlet are formed in the outer wall of the filter vat, and a water outlet is formed in the outer wall of the filter vat. An upper cover is arranged at the top of the filtering barrel, and a convex ring is fixed on the outer wall of the upper cover. The problem that an upper cover needs to be aligned during installation is solved, when the upper cover is installed, only the upper cover needs to be pressed downwards, only a convex ring needs to be attached to the top of a filter barrel, a clamping block is clamped to the outer wall of the convex ring, fixing of the upper cover is completed, an open groove in the outer side of the upper cover does not need to be aligned with a lifting ring screw, and the operation is convenient. The problem that the upper cover needs to be rotated and adjusted during installation is avoided, friction force between the ejector blocks and the clamping rods can be reduced through the arc-shaped end portions of the ejector blocks, and friction force between the clamping blocks and the protruding blocks can be reduced through the arc-shaped end portions of the clamping blocks.

Description

Technical Field

[0001] This invention relates to the field of bag filters, specifically to a bag filter structure that is easy to clean. Background Technology

[0002] The bag filter draws the liquid to be filtered tangentially into the tank through the inlet. Under pressure, the liquid flows from the outside of the filter bag to the inside. Solid particles larger than the pore size of the filter bag are trapped on the outer surface of the filter bag. The clean liquid penetrates the filter bag, collects through the holes of the support basket, and flows out from the outlet.

[0003] In existing bag filters, the filter basket is placed inside the filter canister, followed by the filter bag inside the basket. A pressure plate is then placed on top of the filter bag, and a spring is positioned above the pressure plate, normally extending above the top of the filter canister. The user then places the top cover on top of the filter canister, aligning the opening on the outside of the top cover with the lifting bolt on the outer wall of the filter canister, and presses the top cover firmly. However, because the contact between the spring and the top cover is a point-to-surface contact, pressing down on the top cover causes it to wobble, resulting in the outer side of the top cover... If the opening and the lifting eye screw are misaligned, the position of the top cover needs to be readjusted to align the opening and the lifting eye screw. At this time, the spring is compressed. Twisting the top cover will cause friction between the top cover and the compressed spring, producing an abnormal noise. The noise is a rather harsh metallic friction sound. Furthermore, the spring needs to be removed when cleaning the filter bag later, which is quite troublesome. Moreover, existing bag filters can only filter solid particles, and solid particles containing iron filings will cause the iron filings to mix in, making subsequent separation difficult. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a bag filter structure that is easy to clean, so as to solve the technical problems mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bag filter structure that is easy to clean, comprising a filter barrel, a positioning ring fixed to the inner wall of the filter barrel, a filter basket provided at the top of the positioning ring, a filter bag provided inside the filter basket, an inlet and an outlet provided on the outer wall of the filter barrel, a top cover provided on the top of the filter barrel, a protruding ring fixed to the outer wall of the top cover, and a sloping surface provided at the top of the protruding ring, multiple sets of locking rods movably installed on the outer wall of the filter barrel, locking blocks fixed at the ends of the locking rods, and rotating rods fixed at the ends of the locking rods, a limiting ring movably installed on the outer wall of the filter barrel, and multiple sets of top blocks fixed to the outer wall of the limiting ring, an external thread provided on the outer wall of the filter barrel, and a rotating ring sleeved on the outer wall of the filter barrel, a pressure plate installed on the top of the filter bag, and a second spring provided on the top of the pressure plate.

[0006] By adopting the above technical solution, the problem of alignment during the installation of the top cover is solved. When installing the top cover, simply press it down. When pressing the top cover, it will compress the second spring, and the convex ring only needs to be in contact with the top of the filter barrel. Then rotate the rotating ring. The rotation of the rotating ring will drive the limiting ring to move upward. The top block lifts the locking rod, so that the locking rod rotates around the rotating rod as the center, thereby locking the locking block into the outer wall of the convex ring, completing the fixation of the top cover. It is not necessary to align the groove on the outside of the top cover with the lifting ring screw, avoiding the problem of rotating and adjusting the top cover during installation. The arc-shaped end of the top block can reduce the friction between the top block and the locking rod, and the arc-shaped end of the locking block can reduce the friction between the locking block and the convex block.

[0007] The present invention is further configured such that a support plate is fixed inside the pressure plate, and a through hole is opened inside the support plate. A pressure block is provided on the inner wall of the through hole, and a magnetic rod is fixed at the end of the pressure block, and the diameter of the magnetic rod is larger than that of the pressure block.

[0008] Preferably, the support plate allows users to easily pick up and remove the pressure plate from inside the filter bucket. The through hole facilitates the installation of the magnetic rod, which can attract iron filings in the liquid. The pressure block helps to limit the magnetic rod, preventing it from falling into the filter bag and causing inconvenience in removing it later.

[0009] The present invention is further configured such that the extrusion assembly includes an extrusion rod and a first spring, a plurality of fixing blocks are fixed inside the upper cover, and the extrusion rod is movably installed inside the fixing blocks, and the end of the extrusion rod is provided with a first spring.

[0010] Preferably, instead of the traditional second spring for pressing, the pressure plate is squeezed by the pressure rod and the first spring. When it is necessary to clean the filter bag inside the filter barrel, the rotating ring is rotated in the opposite direction, so that the locking block moves away from the convex ring and the top cover can be opened and removed directly. There is no need to remove the second spring separately, saving manpower and time.

[0011] The present invention is further configured such that a connecting block is fixed to the end of the extrusion rod, and a groove is provided in the middle of the connecting block, and a limit ring is fixed inside the upper cover.

[0012] Preferably, the limiting ring and groove can limit the second spring, preventing it from shaking when compressed.

[0013] The present invention is further configured such that the inner wall of the limiting ring is fixed with multiple sets of limiting blocks, and the outer wall of the limiting blocks is arc-shaped, and the outer wall of the filter bucket is provided with multiple sets of sliding grooves.

[0014] Preferably, the limiting block can cooperate with the slide groove to limit the limiting ring, preventing the limiting ring from rotating and causing misalignment between the top block and the locking rod, so that the limiting ring can only slide in a specific direction.

[0015] The present invention is further configured such that the outer wall of the rotating ring is fixed with a plurality of protrusions, and the top of the rotating ring is fixed with a plurality of spherical protrusions.

[0016] Preferably, the protrusions facilitate the user's rotation of the ring, and the spherical protrusions reduce the contact area between the ring and the limiting ring, thereby reducing the friction between the ring and the limiting ring when they rotate.

[0017] The present invention is further configured such that the number of extrusion rods is multiple sets, the outer walls of the multiple sets of extrusion rods are fixed with connecting rods, and the middle of the connecting rods is fixed with an extrusion block.

[0018] Preferably, the multiple sets of extrusion rods can better press the pressure plate and avoid uneven force on the pressure plate. The extrusion blocks can limit the pressure block and prevent the magnetic rod from shaking during operation.

[0019] The present invention is further configured such that the ends of the top block and the ends of the card block are arc-shaped.

[0020] Preferably, the arc-shaped end of the top block can reduce the contact area with the locking rod, thereby reducing the friction between them. The arc-shaped end of the locking block can also avoid the problem of the locking block being difficult to move due to a large contact area when the protruding ring is squeezed.

[0021] The present invention is further configured such that the limiting ring is composed of two sets of retaining rings, which are fixed by bolts.

[0022] Preferably, the limiting ring consists of two sets of retaining rings, which allows for easy disassembly and installation of the limiting ring.

[0023] The present invention is further configured such that a guide ring is fixed at the bottom of the pressure plate, and the guide ring is tapered.

[0024] Preferably, the conical guide ring can guide the water entering the filter bucket, so that the water can pass through the magnetic rod, and the magnetic rod can adsorb the iron filings in the water.

[0025] In summary, the present invention has the following main beneficial effects: 1. This invention, by incorporating a top cover, a convex ring, a rotating ring, a limiting ring, a top block, a locking rod, and a locking block, solves the problem of needing to align the top cover during installation. During installation, simply press the top cover down; this will compress the second spring, ensuring the convex ring is in contact with the top of the filter bucket. Then, rotate the rotating ring, causing the limiting ring to move upwards. The top block lifts the locking rod, causing it to rotate around the rotating ring, thus locking the locking block onto the outer wall of the convex ring and securing the top cover. This eliminates the need to align the slot on the outer side of the top cover with the lifting bolts, avoiding the need to rotate and adjust the top cover during installation. The arc-shaped end of the top block reduces friction between the top block and the locking rod, and the arc-shaped end of the locking block reduces friction between the locking block and the convex block. 2. This invention is equipped with a pressure plate, a support plate, a flow guide ring, a pressure block, and a magnetic rod. The magnetic rod can adsorb iron filings in the liquid, which can prevent iron filings from mixing with other impurities, facilitate subsequent separation, and reduce waste. The flow guide ring allows the liquid to approach the magnetic rod when flowing out, so that the magnetic rod can better adsorb iron filings in the liquid. 3. This invention replaces the traditional second spring for pressing by incorporating a pressing rod, a connecting block, a groove, a first spring, and a pressing block. The pressing rod and the first spring compress the pressure plate. When cleaning the filter bag inside the filter canister is required, the rotating ring is rotated in the opposite direction, causing the locking block to move away from the convex ring, allowing the top cover to be opened and removed directly without needing to remove the second spring separately. This saves manpower and time, and facilitates the removal and cleaning of the filter bag. The pressing block also limits the pressure block, preventing the magnetic rod from swinging inside the filter bag during use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the prior art in this invention; Figure 2 This is a schematic diagram of the installation of the second spring in this invention; Figure 3 This is a schematic diagram of the structure in this invention; Figure 4 This is a side view of the present invention; Figure 5 This is a perspective view of the filter barrel in this invention; Figure 6 This is a schematic diagram showing the opening of the lever in this invention; Figure 7 This is a schematic diagram of the installation of the first spring in this invention; Figure 8 This is a schematic diagram showing the connection between the upper cover and the convex ring in this invention; Figure 9 This is a perspective view of the limiting ring in this invention; Figure 10 This is a perspective view of the lever in this invention; Figure 11 This is a perspective view of the pressure plate in this invention; Figure 12 This is a schematic diagram of the installation of the flow guide ring in this invention; Figure 13 This is a perspective view of the magnetic rod in this invention; Figure 14 This is a perspective view of the extrusion rod in this invention; Figure 15 This is a schematic diagram of the installation of the filter bag in this invention.

[0027] Explanation of reference numerals in the attached figures: 1. Filter barrel; 2. Top cover; 21. Pressure gauge; 22. Fixing block; 23. Limiting ring; 24. Protruding ring; 25. Slot; 3. Lifting eye screw; 4. Rotating ring; 41. Protrusion; 42. Spherical protrusion; 5. Limiting ring; 51. Top block; 52. Limiting block; 6. Locking rod; 61. Locking block; 62. Rotating rod; 7. Pressure plate; 71. Support plate; 72. Through hole; 73. Guide ring; 8. Pressure block; 81. Magnetic rod; 9. Extrusion rod; 91. Connecting block; 92. Groove; 93. Connecting rod; 94. Extrusion block; 10. First spring; 11. Inlet; 12. Outlet; 13. Second spring; 14. External thread; 15. Slide groove; 16. Rubber ring; 17. Filter basket; 18. Filter bag; 19. Positioning ring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] The embodiments of the present invention will now be described.

[0030] Example 1: A bag filter structure that is easy to clean; please refer to [link / reference]. Figure 3 - Figure 15The system includes a filter bucket 1, a top cover 2 on the top of the filter bucket 1, a positioning ring 19 fixed to the inner wall of the filter bucket 1, a filter basket 17 on the top of the positioning ring 19, a filter bag 18 inside the filter basket 17, an inlet 11 and an outlet 12 on the outer wall of the filter bucket 1, a pressure gauge 21 and a pressure relief valve on the top of the top cover 2 (the pressure gauge 21 allows observation of the internal pressure of the filter bucket 1), a protruding ring 24 fixed to the outer wall of the top cover 2 (the top of the protruding ring 24 is inclined), and multiple sets of locking rods 6 movably installed on the outer wall of the filter bucket 1, with locking blocks fixed to the ends of the locking rods 6. 61. A rotating rod 62 is fixed to the end of the clamping rod 6, and the rotating rod 62 is movably connected to the filter barrel 1. A limiting ring 5 is movably installed on the outer wall of the filter barrel 1, and multiple sets of top blocks 51 are fixed on the outer wall of the limiting ring 5. The outer wall of the filter barrel 1 is provided with an external thread 14, and a rotating ring 4 is sleeved on the outer wall of the filter barrel 1. A pressure plate 7 is installed on the top of the filter bag 18, and a second spring 13 is provided on the top of the pressure plate 7. A rubber ring 16 is provided on the top of the filter barrel 1. The rubber ring 16 can seal the connection between the top cover 2 and the filter barrel 1 when the top cover 2 is installed, so as to avoid leakage.

[0031] Please see Figure 1 - Figure 2 The filter barrel 1 is provided with a top cover 2, and the outer wall of the top cover 2 is provided with multiple sets of slots 25. The outer wall of the filter barrel 1 is provided with multiple sets of lifting eye bolts. This is the prior art.

[0032] Please see Figure 5 and Figure 11 The pressure plate 7 has a support plate 71 fixed inside, and the support plate 71 has a through hole 72 inside. The inner wall of the through hole 72 is provided with a pressure block 8, and the end of the pressure block 8 is fixed with a magnetic rod 81. The diameter of the magnetic rod 81 is larger than that of the pressure block 8. The support plate 71 makes it easy for the user to pick up and remove the pressure plate 7 from the inside of the filter bucket 1. The through hole 72 makes it easy to install the magnetic rod 81. The magnetic rod 81 can attract iron filings in the liquid. The pressure block 8 can limit the magnetic rod 81 and prevent it from falling into the filter bag 18, which would make it difficult to remove the magnetic rod 81 later.

[0033] Please see Figure 5 and Figure 9 The inner wall of the limiting ring 5 is fixed with multiple sets of limiting blocks 52, and the outer wall of the limiting block 52 is arc-shaped. The outer wall of the filter bucket 1 is provided with multiple sets of sliding grooves 15. The limiting blocks 52 can cooperate with the sliding grooves 15 to limit the limiting ring 5, so as to prevent the limiting ring 5 from rotating and causing the top block 51 and the locking rod 6 to misalign, so that the limiting ring 5 can only slide in a specific direction.

[0034] Please see Figure 3 and Figure 4 The outer wall of the rotating ring 4 is fixed with multiple sets of protrusions 41, and the top of the rotating ring 4 is fixed with multiple sets of spherical protrusions 42. The protrusions 41 make it easy for the user to rotate the rotating ring 4. The spherical protrusions 42 reduce the contact area between the rotating ring 4 and the limiting ring 5, thereby reducing the friction between the rotating ring 4 and the limiting ring 5 when rotating.

[0035] Please see Figure 4 , Figure 9 and Figure 10 The top block 51 has an arc-shaped end, and the locking block 61 has an arc-shaped end. The arc-shaped end of the top block 51 can reduce the contact area with the locking rod 6, thereby reducing the friction between them. The arc-shaped end of the locking block 61 can avoid the problem of the locking block 61 being difficult to move due to a large contact area when the protruding ring 24 is squeezed.

[0036] Please see Figure 5 The limiting ring 5 consists of two sets of retaining rings, which are fixed by bolts. The limiting ring 5 composed of the two sets of retaining rings can be easily disassembled and installed.

[0037] Please see Figure 11 and Figure 12 The bottom of the pressure plate 7 is fixed with a guide ring 73, and the guide ring 73 is tapered. The tapered guide ring 73 can guide the water entering the filter bucket 1 so that the water can pass through the magnetic rod 81, and the magnetic rod 81 can adsorb the iron filings in the water.

[0038] Example 2: Please refer to Figure 7 , Figure 8 and Figure 14 The upper cover 2 is equipped with a pressing assembly, which includes a pressing rod 9 and a first spring 10. Multiple sets of fixing blocks 22 are fixed inside the upper cover 2, and the pressing rod 9 is movably installed inside the fixing blocks 22. The end of the pressing rod 9 is provided with the first spring 10. The pressing rod 9 and the first spring 10 replace the second spring 13. The pressing rod 9 presses the pressure plate 7. When disassembly is required, the upper cover 2 can be directly disassembled without the user having to disassemble the second spring 13 separately.

[0039] Please see Figure 7 and Figure 14 The end of the extrusion rod 9 is fixed with a connecting block 91, and the middle of the connecting block 91 is provided with a groove 92. The inside of the upper cover 2 is fixed with a limit ring 23. The connecting block 91 can prevent the extrusion rod 9 from separating from the upper cover 2. The limit ring 23 and the groove 92 can limit the second spring 10 and prevent the second spring 10 from shaking when it is extruded.

[0040] Please see Figure 7The number of extrusion rods 9 is multiple sets, which are evenly distributed inside the upper cover 2. The outer walls of the multiple sets of extrusion rods 9 are fixed with connecting rods 93, and the middle of the connecting rods 93 is fixed with an extrusion block 94. The multiple sets of extrusion rods 9 can better press the pressure plate 7 and avoid the problem of uneven force on the pressure plate 7. The extrusion block 94 can limit the pressure block 8 and prevent the magnetic rod 81 from shaking during operation.

[0041] The working principle of this invention is as follows: First, place the filter basket 17 inside the filter barrel, with the filter basket 17 positioned above the positioning ring 19. Then, place the filter bag 18 inside the filter basket 17. Next, place the pressure plate 7 above the filter bag, and insert the guide ring 73 into the filter bag 18. The diameter of the outer wall of the guide ring 73 is smaller than the diameter of the filter bag 18. Then, insert the magnetic rod 81 into the inner wall of the through hole 72, and the pressure block 8 contacts the support plate 71. Next, install the upper cover 2, with the pressing rod 9 at the bottom of the upper cover 2 contacting the top of the pressure plate 7. Align the convex ring 24 with the top of the filter barrel 1, and then press the upper cover 2 down forcefully. Pressing the upper cover 2 down causes the pressing rod 9 to compress the first spring 10, which in turn causes the convex ring 24 to compress the rubber ring at the top of the filter barrel 1. Then the user rotates the protrusion 41, which drives the rotating ring 4 to rotate. When the rotating ring 4 rotates, it moves upward under the action of the external thread 14. When the rotating ring 4 moves upward, it drives the limiting ring 5 to move upward. When the limiting ring 5 moves upward, it drives the top block 51 to move. When the top block 51 moves, it squeezes the locking rod 6. The locking rod 6 rotates around the rotating rod 62. When the locking rod 6 rotates, it makes the locking block 61 fit against the inclined surface of the protrusion ring 24, thereby completing the fixation of the top cover 2. The filter bucket 1 is placed in the designated position. The water pipe is connected to the inlet flange 11 and the water outlet flange is connected to the outlet flange 12. The water is filtered through the filter bag 18. When the water enters the filter bucket 1, it will flow to the bottom of the filter bucket 1 under the action of the guide ring 73. Then the iron filings in the water are filtered through the magnetic rod 81. When the filter bag needs to be cleaned, rotate the rotating ring 4 in the opposite direction. The rotating ring 4 moves downward, and the limiting ring 5 also moves downward. At this time, the locking rod 6 will flip outward, so that the locking block 61 disengages from the convex ring 24. Then the top cover 2 can be removed, and the pressure plate 7 can be removed. The outer wall of the magnetic rod 81 can be cleaned, and the filter bag 18 can be taken out for cleaning.

[0042] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A bag filter structure that is easy to clean, comprising a filter barrel (1), wherein a positioning ring (19) is fixed to the inner wall of the filter barrel (1), and a filter basket (17) is provided on the top of the positioning ring (19), wherein a filter bag (18) is provided inside the filter basket (17), and an inlet (11) and an outlet (12) are provided on the outer wall of the filter barrel (1), characterized in that: The filter bucket (1) is provided with a top cover (2) and a convex ring (24) is fixed on the outer wall of the top cover (2). The top of the convex ring (24) is inclined. Multiple sets of clamping rods (6) are movably installed on the outer wall of the filter bucket (1). A clamping block (61) is fixed at the end of the clamping rod (6). A rotating rod (62) is fixed at the end of the clamping rod (6). The rotating rod (62) is movably connected to the filter bucket (1). A limiting ring (5) is movably installed on the outer wall of the filter bucket (1). Multiple sets of top blocks (51) are fixed on the outer wall of the limiting ring (5). An external thread (14) is provided on the outer wall of the filter bucket (1). A rotating ring (4) is sleeved on the outer wall of the filter bucket (1). A pressure plate (7) is installed on the top of the filter bag (18). A second spring (13) is provided on the top of the pressure plate (7).

2. The bag filter structure for easy cleaning according to claim 1, characterized in that: The pressure plate (7) has a support plate (71) fixed inside, and the support plate (71) has a through hole (72) inside. The inner wall of the through hole (72) is provided with a pressure block (8), and the end of the pressure block (8) is fixed with a magnetic rod (81), and the diameter of the magnetic rod (81) is larger than that of the pressure block (8).

3. The bag filter structure for easy cleaning according to claim 1, characterized in that: The upper cover (2) is provided with a compression assembly inside. The compression assembly includes a compression rod (9) and a first spring (10). Multiple sets of fixing blocks (22) are fixed inside the upper cover (2), and the compression rod (9) is movably installed inside the fixing block (22). The end of the compression rod (9) is provided with a first spring (10).

4. The bag filter structure for easy cleaning according to claim 3, characterized in that: The end of the extrusion rod (9) is fixed with a connecting block (91), and a groove (92) is provided in the middle of the connecting block (91). A limit ring (23) is fixed inside the upper cover (2).

5. The bag filter structure for easy cleaning according to claim 1, characterized in that: The inner wall of the limiting ring (5) is fixed with multiple sets of limiting blocks (52), and the outer wall of the limiting block (52) is arc-shaped. The outer wall of the filter bucket (1) is provided with multiple sets of sliding grooves (15).

6. The bag filter structure for easy cleaning according to claim 1, characterized in that: The outer wall of the rotating ring (4) is fixed with a number of protrusions (41), and the top of the rotating ring (4) is fixed with a number of spherical protrusions (42).

7. The bag filter structure for easy cleaning according to claim 3, characterized in that: The number of extrusion rods (9) is multiple sets, and the outer wall of the multiple sets of extrusion rods (9) is fixed with connecting rods (93), and the middle part of the connecting rods (93) is fixed with extrusion blocks (94).

8. The bag filter structure for easy cleaning according to claim 1, characterized in that: The top block (51) has an arc-shaped end, and the card block (61) has an arc-shaped end.

9. The bag filter structure for easy cleaning according to claim 1, characterized in that: The limiting ring (5) consists of two sets of retaining rings, which are fixed by bolts.

10. The bag filter structure for easy cleaning according to claim 2, characterized in that: The bottom of the pressure plate (7) is fixed with a guide ring (73), and the guide ring (73) is tapered.

Images