A centrifugal bag filter

Abstract

The application relates to the technical field of filters, and discloses a centrifugal bag filter which comprises a centrifugal water tank, a filter tank and a connecting pipe, the connecting pipe is connected between the top of the centrifugal water tank and the upper portion of the filter tank, the top of the filter tank is of an open structure, the top of the filter tank is provided with a tank cover through bolt mounting, the top of the tank cover is fixedly provided with a tank cap, the top of the tank cap is provided with a forward and reverse motor, the inside of the filter tank is provided with a foldable and extendable adjusting filter bag, the inside of the filter bag is provided with a telescopic and lifting adjusting cleaning component, the forward and reverse motor is in transmission connection with the cleaning component, and the inside of the filter tank is provided with a tightening mechanism for clamping and fixing the filter bag; the centrifugal bag filter has a cleaning structure and an extension adjusting structure, and through cooperation of the cleaning structure and the extension adjusting structure, accumulation of impurities is effectively avoided, and the effectiveness and durability of the filter bag filtering are ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of filters, and particularly relates to a centrifugal bag filter. BACKGROUND

[0002] The centrifugal bag filter is a high-efficiency filtering device combining centrifugal separation and bag filter technology, and is widely applied to removal of solid particles in liquid, and its working principle is to rapidly separate solid particles in liquid through centrifugal force and then remove residual small particles through a bag filter; the device is usually composed of a centrifugal separator and a filter bag, liquid first enters the centrifugal separator, under the action of high-speed rotation, heavier solid particles are thrown to the inner wall of the device to form a deposit, and lighter liquid flows out from the center, and then the liquid passes through the filter bag to further remove small particles that are not captured by the centrifugal separator; the centrifugal bag filter has the advantages of high filtering efficiency, simple operation and low maintenance cost, and is suitable for multiple industries such as chemical industry, pharmaceutical industry, food industry and water treatment.

[0003] The existing centrifugal bag filter does not have a cleaning function when in use, when a large amount of impurities are attached to the inside of the filter bag and affect the filtration, only the filter bag can be replaced, and meanwhile the filter bag cannot be adjusted during use, so that the entire inside of the filter bag starts to filter when it is used, thereby shortening the filtration time, therefore, the existing centrifugal bag filter has the problems of insufficient use, low filtering efficiency, and the like. SUMMARY

[0004] In order to achieve the above-mentioned purpose, the application provides the following technical scheme: a centrifugal bag filter, comprising a centrifugal water tank, a filter tank and a connecting pipe, the connecting pipe is connected between the top of the centrifugal water tank and the upper part of the filter tank, the top of the filter tank is of an open structure, the top of the filter tank is provided with a tank cover through bolt installation, the top of the tank cover is fixedly provided with a tank cap, the top of the tank cap is provided with a forward and reverse motor, the inside of the filter tank is provided with a foldable and extendable adjustable filter bag, the inside of the filter bag is provided with a telescopic and lifting adjustable cleaning component, the forward and reverse motor is in transmission connection with the cleaning component, and the inside of the filter tank is provided with a tightening mechanism for clamping and fixing the filter bag.

[0005] Preferably, the upper part of the filter bag has a corrugated folded structure, a connecting ring is fixedly installed on the top of the filter bag, a clamping sealing ring A is fixedly installed on the bottom of the connecting ring, the connecting ring is installed in the upper part of the filter tank, the filter bag has an insert tube inside, a clamping ring is fixedly installed on the top of the insert tube, the clamping ring is installed in the upper part of the filter tank and located on top of the connecting ring, a clamping sealing ring B is fixedly installed on the bottom of the clamping ring, and four blocks are fixedly installed at equal intervals in a ring at the bottom of the tank lid to press and fix the clamping ring, so as to securely install the filter bag and facilitate the installation and removal of the filter bag.

[0006] Preferably, the tightening mechanism includes four arc-shaped clamping components located inside the filter tank. Any two adjacent arc-shaped clamping components are staggered vertically. The four arc-shaped clamping components clamp and fix the filter bag through the insertion tube. An installation block is fixedly installed in the middle of the outer arc surface of each of the four arc-shaped clamping components. One end of each installation block has an insertion hole, and a pin is movably inserted into the insertion hole. One end of each pin is fixedly connected to the inside of the filter tank.

[0007] Preferably, one end of each of the four mounting blocks is fixedly mounted with an internal threaded block, and the interior of each of the four internal threaded blocks is threaded with a threaded rod. Each of the four threaded rods is rotatably connected to the filter tank, and one end of each of the four threaded rods extends to the outside of the filter tank and is fixedly connected with a bevel gear. A rotating ring is mounted on the surface of the filter tank, and a bevel gear ring that meshes with the four bevel gears is fixedly mounted at the bottom of the rotating ring, thereby allowing the four arc-shaped clamping parts to separate from the filter bag, allowing the filter bag to extend and move downwards to grow.

[0008] Preferably, a horizontal block is fixedly installed on the surface of the filter tank, and an L-shaped block is fixedly installed on the circumference of the rotating ring. An electric telescopic rod is rotatably installed between one end of the horizontal block and the top of the L-shaped block, thereby enabling effective adjustment and transmission.

[0009] Preferably, the cleaning component includes a hollow cover located inside the filter bag. The surface of the hollow cover is provided with four arc-shaped scrapers, with any two adjacent arc-shaped scrapers staggered vertically. Adjusting rods are fixedly installed on the inner arc surfaces of the four arc-shaped scrapers. The surface of the hollow cover has four through holes, which are respectively aligned with the four adjusting rods. The four adjusting rods are movably inserted into the four through holes and extend into the interior of the hollow cover. A linkage block is provided inside the hollow cover. A linkage rod is rotatably connected between the bottom of the linkage block and one end of each of the four adjusting rods, thereby effectively cleaning impurities inside the filter bag.

[0010] Preferably, the inside of the filter bag is provided with an outer square internal thread pipe, a motor is mounted at the lower part of the inside of the outer square internal thread pipe, the output end of the motor is fixedly connected with a threaded rod extending into the inside of the hollow cover, and the threaded rod is in threaded connection with the linkage block, so that the four arc-shaped scrapers can be effectively adjusted to be in contact with the inside of the filter bag.

[0011] Preferably, a square internal groove is formed between the middle parts of the tank cover and the tank cap, the outer square internal thread pipe is movably inserted into the inside of the square internal groove, a threaded shaft in threaded connection with the outer square internal thread pipe is rotatably connected to the top of the square internal groove, the top of the threaded shaft is fixedly connected with the output end of the reversible motor, a ring groove is formed at the lower part of the square internal groove, and three sealing water retaining rings in contact with the surface of the square internal thread pipe are mounted in the inside of the ring groove, so that the arc-shaped scrapers can be effectively driven to move downward for adjustment.

[0012] Preferably, a water inlet pipe is mounted at the upper part of the surface of the centrifugal water tank, a sand setting tank is mounted at the bottom of the centrifugal water tank, a discharge pipe is mounted at one end of the sand setting tank, a valve A is mounted at the middle part of the discharge pipe, a water outlet pipe is mounted at the bottom of the filter tank, and a valve B is mounted at the middle part of the water outlet pipe, so that the liquid can be effectively transported and filtered.

[0013] Compared with the prior art, the centrifugal bag filter has the advantages that:

[0014] (1) The centrifugal bag filter has a cleaning structure and an extension adjustment structure, the cleaning structure can remove impurities in the inside of the filter bag to avoid blockage and affect the filtering performance, and the extension adjustment structure can extend and adjust the filter bag to increase the length of the filter bag, and the cooperation of the cleaning structure and the extension adjustment structure can effectively avoid the accumulation of impurities to ensure the effectiveness and durability of the filter bag;

[0015] The cleaning structure and the extension adjustment structure are simple in design, convenient to use and operate, stable and reliable in adjustment and cleaning, and have the performance to meet the use requirement of high-efficiency liquid filtration.

[0016] (2), by starting the electric telescopic rod to stretch and make the L-shaped block drive the rotating ring to rotate, the rotation of the rotating ring will drive the bevel gear to rotate, the rotation of the bevel gear will drive the four bevel gears to rotate, the rotation of the four bevel gears will drive the four threaded rods to rotate, the rotation of the four threaded rods will make the four internal threaded blocks move on their surfaces and drive the four mounting blocks to move on the surfaces of the four bolts, the movement of the four mounting blocks will drive the four arc clamping pieces away from the filter bag, so that the four arc clamping pieces do not clamp and fix the filter bag, and then the filter bag is pushed to stretch and grow in equal length by the downward movement of the cleaning component; after the filter bag stretches and grows, the four arc clamping pieces clamp and fix the filter bag again, so that the filter bag can continue to effectively filter;

[0017] (3), by starting the motor to make the threaded rod rotate, the rotation of the threaded rod will make the connecting block move downward on its surface, the downward moving connecting block will push the four connecting rods to move and push the four adjusting rods out of the hollow cover, the four outward moving adjusting rods will push the four arc scrapers to move, and finally the four arc scrapers contact the inside of the filter bag; then the downward moving four arc scrapers will scrape the impurities in the filter bag, so that the impurities are concentrated in the lower part of the filter bag;

[0018] (4), by starting the forward and reverse motor to make the threaded shaft rotate, the rotation of the threaded shaft will make the outer square internal threaded tube move downward in the square internal groove, the downward movement of the outer square internal threaded tube will drive the hollow cover and the four arc scrapers to move downward, and the four expanded arc scrapers will scrape the impurities attached to the inside of the filter bag during the downward movement, so that the impurities are concentrated and fall to the lower part of the filter bag. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, together with the embodiments of the application, to explain the application, and do not constitute a limitation on the application.

[0020] In the drawings:

[0021] Figure 1 is a structure schematic view of the centrifugal bag filter of the application;

[0022] Figure 2 is a structure schematic view of the centrifugal bag filter of the application Figure 1 ;

[0023] Figure 3 is a structure schematic view of the centrifugal bag filter of the application Figure 1 ;

[0024] Figure 4 is a structure schematic view of the centrifugal bag filter of the application Figure 3Partial structure diagram of the application Figure 1 ;

[0025] Figure 5 Partial structure diagram of the application Figure 4 ; Figure 1

[0026] Figure 6 Partial structure diagram of the application Figure 4 ; Figure 2

[0027] Figure 7 Partial structure diagram of the application Figure 3 ;

[0028] Figure 8 Partial structure diagram of the application Figure 3 ; Figure 2

[0029] Figure 9 Partial structure diagram of the application Figure 8 ;

[0030] In the figure: 1, centrifugal water tank; 2, filter tank; 3, connecting pipe; 4, tank cover; 401, stop block; 5, tank cap; 6, forward and reverse motor; 7, filter bag; 8, cleaning component; 9, connecting ring; 10, clamping sealing ring A; 11, insertion pipe; 12, clamping ring; 13, clamping sealing ring B; 14, arc clamping part; 15, mounting block; 16, insertion hole; 17, insertion pin; 18, inner threaded block; 19, threaded rod; 20, bevel gear; 21, rotating ring; 22, bevel gear ring; 23, cross block; 24, L-shaped block; 25, electric telescopic rod; 26, hollow cover; 27, arc-shaped scraper; 28, through hole; 29, adjusting rod; 30, linkage block; 31, linkage rod; 32, outer square inner threaded pipe; 33, motor; 34, threaded rod; 35, square inner groove; 36, threaded shaft; 37, ring groove; 38, sealing water retaining ring; 39, water inlet pipe; 40, sand settling tank; 41, discharge pipe; 42, valve A; 43, water outlet pipe; 44, valve B. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] Embodiment one, by Figures 1 to 9 ​​​The present application comprises a centrifugal water tank 1, a filter tank 2 and a connecting pipe 3, the connecting pipe 3 is connected between the top of the centrifugal water tank 1 and the upper part of the filter tank 2, the top of the filter tank 2 is an open structure, the top of the filter tank 2 is provided with a tank cover 4 through bolt installation, the top of the tank cover 4 is fixedly installed with a tank cap 5, the top of the tank cap 5 is installed with a forward and reverse motor 6, the inside of the filter tank 2 is installed with a folding and extendable adjustable filter bag 7, the inside of the filter bag 7 is installed with a telescopic and lifting adjustable cleaning component 8, the forward and reverse motor 6 is drivingly connected with the cleaning component 8, the inside of the filter tank 2 is installed with a tightening mechanism for clamping and fixing the filter bag 7.

[0033] The upper part of the surface of the centrifugal water tank 1 is installed with a water inlet pipe 39, the bottom of the centrifugal water tank 1 is installed with a sand tank 40, one end of the sand tank 40 is installed with a discharge pipe 41, the middle part of the discharge pipe 41 is installed with a valve A 42, the bottom of the filter tank 2 is installed with a water outlet pipe 43, the middle part of the water outlet pipe 43 is installed with a valve B 44, so that the liquid can be effectively transported and filtered.

[0034] The high-pressure liquid enters the inside of the centrifugal water tank 1 tangentially through the water inlet pipe 39 and rotates, the centrifugal force generated by the rotation pushes the sand and solid particles with higher density to flow along the inner wall of the centrifugal water tank 1 and move downward, finally the sand and stones enter the inside of the sand tank 40;

[0035] Then the preliminarily filtered liquid enters the inside of the filter tank 2 through the connecting pipe 3, then enters the inside of the filter bag 7 through the insertion pipe 11 and is filtered again, so that the fine impurities in the liquid are filtered and intercepted by the filter bag 7, and then the cleaned liquid is discharged through the water outlet pipe 43.

[0036] The upper part of the filter bag 7 is a corrugated folded structure, the top of the filter bag 7 is fixedly installed with a connecting ring 9, the bottom of the connecting ring 9 is fixedly installed with a clamping sealing ring A 10, the connecting ring 9 is installed at the upper part inside the filter tank 2, the inside of the filter bag 7 is provided with an insertion pipe 11, the top of the insertion pipe 11 is fixedly installed with a clamping ring 12, the clamping ring 12 is installed at the upper part inside the filter tank 2 and located at the top of the connecting ring 9, the bottom of the clamping ring 12 is fixedly installed with a clamping sealing ring B 13, the bottom of the tank cover 4 is annularly and equidistantly fixedly installed with four abutting blocks 401 for pressing and fixing the clamping ring 12, so that the filter bag 7 can be firmly installed and conveniently disassembled and assembled.

[0037] The filter bag 7 with the upper corrugated folding structure is installed to the inside of the filter tank 2 through the connecting ring 9, then the insertion tube 11 is inserted to the inside of the filter bag 7 through the clamping ring 12, and the clamping ring 12 is located on the top of the connecting ring 9, then the tank cover 4 is installed on the top of the filter tank 2, and meanwhile the four resisting blocks 401 extrude the clamping ring 12 to deform the clamping sealing ring A 10 and the clamping sealing ring B 13 to effectively seal.

[0038] The centrifugal bag filter has the cleaning structure and the extension adjusting structure, the cleaning structure can remove the impurities in the filter bag to avoid the blockage affecting the filtering performance, and the extension adjusting structure can extend and adjust the filter bag to increase the length of the filter bag, and meanwhile the cooperation of the cleaning structure and the extension adjusting structure effectively avoids the accumulation of the impurities to ensure the effectiveness and durability of the filter bag filtering, and the cleaning structure and the extension adjusting structure are simple in design, convenient to use and operate, stable and reliable in adjustment and cleaning, and have the performance meeting the use requirement of liquid efficient filtering.

[0039] In the embodiment two, on the basis of the embodiment one, the tightening mechanism includes four arc-shaped clamping pieces 14, the four arc-shaped clamping pieces 14 are located in the inside of the filter tank 2, any two adjacent arc-shaped clamping pieces 14 are arranged in up and down staggered mode, the radian of the four arc-shaped clamping pieces 14 is one hundred and twenty degrees, the four arc-shaped clamping pieces 14 clamp and fix the filter bag 7 through the insertion tube 11, the four arc-shaped clamping pieces 14 are matched with the insertion tube 11, the middle part of the outer arc surface of the four arc-shaped clamping pieces 14 is fixedly installed with the mounting block 15, one end of the mounting block 15 is provided with the insertion hole 16, the insertion hole 16 movably inserts the bolt 17, and one end of the bolt 17 is fixedly connected with the inside of the filter tank 2.

[0040] One end of the four mounting blocks 15 is fixedly installed with the inner threaded block 18, the inside of the four inner threaded blocks 18 is threadedly connected with the threaded rod 19, the four threaded rods 19 are rotationally connected with the filter tank 2, one end of the four threaded rods 19 extends to the outside of the filter tank 2 and is fixedly connected with the bevel gear 20, the surface of the filter tank 2 is installed with the rotating ring 21, the bottom of the rotating ring 21 is fixedly installed with the bevel gear ring 22 meshingly connected with the four bevel gears 20, so that the four arc-shaped clamping pieces 14 can be separated from the filter bag 7 to make the filter bag 7 extend and move downward to increase the length; the surface of the filter tank 2 is fixedly installed with the horizontal block 23, the circumferential surface of the rotating ring 21 is fixedly installed with the L-shaped block 24, and the one end of the horizontal block 23 and the top of the L-shaped block 24 are rotationally installed with the electric telescopic rod 25, so that the adjustment and transmission can be effectively realized.

[0041] The L-shaped block 24 drives the rotating ring 21 to rotate by driving the electric telescopic rod 25 to extend. The rotation of the rotating ring 21 drives the bevel gear 22 to rotate, and the rotation of the bevel gear 22 drives the four bevel gears 20 to rotate. The rotation of the four bevel gears 20 drives the four threaded rods 19 to rotate, and the rotation of the four threaded rods 19 drives the four inner threaded blocks 18 to move on the surface thereof, thereby driving the four mounting blocks 15 to move on the surface of the four bolts 17. The movement of the four mounting blocks 15 drives the four arc-shaped clamping members 14 to move away from the filter bag 7, so that the four arc-shaped clamping members 14 do not clamp and fix the filter bag 7. Then, the filter bag 7 is pushed to extend by the same length by the downward movement of the cleaning component 8. After the filter bag 7 is extended, the four arc-shaped clamping members 14 clamp and fix the filter bag 7 again, thereby avoiding the automatic extension of the filter bag 7 during the filtering process. The extension by the same length enables the filter bag 7 to continuously and effectively perform the filtering operation.

[0042] In example three, on the basis of example one, the cleaning component 8 comprises a hollow cover 26 located inside the filter bag 7. The surface of the hollow cover 26 is provided with four arc-shaped scrapers 27. The radius of each of the four arc-shaped scrapers 27 is 120 degrees. Any two adjacent arc-shaped scrapers 27 are arranged in an up-down staggered manner. The inner arc surface of each of the four arc-shaped scrapers 27 is fixedly installed with an adjusting rod 29. The surface of the hollow cover 26 is provided with four through holes 28. Each of the four through holes 28 is aligned with one of the four adjusting rods 29. The four adjusting rods 29 are movably inserted into the four through holes 28 and extend into the hollow cover 26. The hollow cover 26 is provided with a linkage block 30. The bottom of the linkage block 30 is rotatably connected with a linkage rod 31 at one end of each of the four adjusting rods 29. Thus, the impurities inside the filter bag 7 can be effectively cleaned.

[0043] The inside of the filter bag 7 is provided with an outer square inner threaded pipe 32. A motor 33 is installed at the lower part of the outer square inner threaded pipe 32. The output end of the motor 33 is fixedly connected with a threaded rod 34 extending into the hollow cover 26. The threaded rod 34 is threadedly connected with the linkage block 30. Thus, the four arc-shaped scrapers 27 can be effectively adjusted to contact the inside of the filter bag 7.

[0044] The threaded rod 34 is driven to rotate by the motor 33. The rotation of the threaded rod 34 drives the linkage block 30 to move downward on the surface thereof. The downward moving linkage block 30 drives the four linkage rods 31 to move, thereby driving the four adjusting rods 29 to move out of the hollow cover 26. The four moving-out adjusting rods 29 drive the four arc-shaped scrapers 27 to move, thereby finally enabling the four arc-shaped scrapers 27 to contact the inside of the filter bag 7. Then, the downward moving four arc-shaped scrapers 27 scrape the impurities inside the filter bag 7, thereby enabling the impurities to be concentrated at the lower part of the filter bag 7.

[0045] The middle part between the can cover 4 and the can cap 5 is provided with a square inner groove 35, the outer square inner threaded pipe 32 is movably inserted into the square inner groove 35, the top of the square inner groove 35 is rotatably connected with the threaded shaft 36 which is threadedly connected with the outer square inner threaded pipe 32, the top of the threaded shaft 36 is fixedly connected with the output end of the forward and reverse motor 6, the lower part of the square inner groove 35 is provided with a ring groove 37, the ring groove 37 is internally provided with three sealing water baffle rings 38 which are in surface contact with the outer square inner threaded pipe 32, so that the arc-shaped scrapers 27 can be effectively driven to move downward for adjustment.

[0046] By starting the forward and reverse motor 6, the threaded shaft 36 is rotated, the rotation of the threaded shaft 36 drives the outer square inner threaded pipe 32 to move downward in the square inner groove 35, the downward movement of the outer square inner threaded pipe 32 drives the hollow cover 26 and the four arc-shaped scrapers 27 to move downward, and the four unfolded arc-shaped scrapers 27 can scrape off the impurities attached to the inside of the filter bag 7 during the downward movement, so that the impurities are concentrated and fall into the lower part of the filter bag 7.

[0047] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0048] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A centrifugal bag filter comprising a centrifugal water tank (1), a filter tank (2) and a connecting pipe (3), characterized in that: The connecting pipe (3) is connected between the top of the centrifugal water tank (1) and the upper part of the filter tank (2), the top of the filter tank (2) is an open structure, the top of the filter tank (2) is provided with a tank cover (4) by bolts, the top of the tank cover (4) is fixedly provided with a tank cap (5), the top of the tank cap (5) is provided with a forward and reverse motor (6), the inside of the filter tank (2) is provided with a foldable and extendable adjustable filter bag (7), the inside of the filter bag (7) is provided with a telescopic and lifting adjustable cleaning component (8), the forward and reverse motor (6) is in transmission connection with the cleaning component (8), and the inside of the filter tank (2) is provided with a tightening mechanism for clamping and fixing the filter bag (7).

2. A centrifugal bag filter according to claim 1, characterized in that: The upper part of the filter bag (7) is a corrugated folded structure, the top of the filter bag (7) is fixedly provided with a connecting ring (9), the bottom of the connecting ring (9) is fixedly provided with a clamping sealing ring A (10), the connecting ring (9) is installed on the upper part of the inside of the filter tank (2), the inside of the filter bag (7) is provided with a insertion pipe (11), the top of the insertion pipe (11) is fixedly provided with a clamping ring (12), the clamping ring (12) is installed on the upper part of the inside of the filter tank (2) and located on the top of the connecting ring (9), the bottom of the clamping ring (12) is fixedly provided with a clamping sealing ring B (13), and the bottom of the tank cover (4) is annularly and equidistantly fixedly provided with four resisting blocks (401) for pressing and fixing the clamping ring (12).

3. A centrifugal bag filter according to claim 2, characterized in that: The tightening mechanism comprises four arc-shaped clamping pieces (14), the four arc-shaped clamping pieces (14) are located in the inside of the filter tank (2), any two adjacent arc-shaped clamping pieces (14) are arranged in up-down staggered mode, the four arc-shaped clamping pieces (14) clamp and fix the filter bag (7) through the insertion pipe (11), and the middle part of the outer arc surface of each of the four arc-shaped clamping pieces (14) is fixedly provided with a mounting block (15), one end of the mounting block (15) is provided with an insertion hole (16), and a bolt (17) is movably inserted into the insertion hole (16).

4. A centrifugal bag filter according to claim 3, characterized in that: One end of each of the four mounting blocks (15) is fixedly provided with an internal thread block (18), the inside of each of the four internal thread blocks (18) is threadedly connected with a threaded rod (19), the four threaded rods (19) are rotatably connected with the filter tank (2), one end of each of the four threaded rods (19) extends to the outside of the filter tank (2) and is fixedly connected with a bevel gear (20), the surface of the filter tank (2) is provided with a rotating ring (21), and the bottom of the rotating ring (21) is fixedly provided with a bevel gear ring (22) in meshing connection with the four bevel gears (20).

5. A centrifugal bag filter according to claim 4, characterized in that: The surface of the filter tank (2) is fixedly provided with a horizontal block (23), the circumferential surface of the rotating ring (21) is fixedly provided with an L-shaped block (24), and one end of the horizontal block (23) is rotatably connected with the top of the L-shaped block (24).

6. A centrifugal bag filter according to claim 1, characterized in that: The cleaning component (8) comprises a hollow cover (26) inside the filter bag (7), the surface of the hollow cover (26) is provided with four arc-shaped scrapers (27), any two adjacent arc-shaped scrapers (27) are arranged in up-down staggered mode, the inner arc surface of the four arc-shaped scrapers (27) is fixedly installed with an adjusting rod (29), the surface of the hollow cover (26) is provided with four through holes (28), the four through holes (28) are arranged in alignment with the four adjusting rods (29), the four adjusting rods (29) are movably inserted into the four through holes (28) and extend into the hollow cover (26), and the inside of the hollow cover (26) is provided with a linkage block (30), and the bottom of the linkage block (30) is rotatably connected with a linkage rod (31) between one end of the four adjusting rods (29).

7. A centrifugal bag filter according to claim 1, characterized in that: The inside of the filter bag (7) is provided with an outer square inner threaded pipe (32), the inside of the lower part of the outer square inner threaded pipe (32) is installed with a motor (33), the output end of the motor (33) is fixedly connected with a threaded rod (34) extending into the hollow cover (26), and the threaded rod (34) is in threaded connection with the linkage block (30).

8. A centrifugal bag filter according to claim 7, characterized in that: The middle part between the tank cover (4) and the tank cap (5) is provided with a square inner groove (35), the outer square inner threaded pipe (32) is movably inserted into the square inner groove (35), the top of the square inner groove (35) is rotatably connected with a threaded shaft (36) in threaded connection with the outer square inner threaded pipe (32), the top of the threaded shaft (36) is fixedly connected with the output end of the reversible motor (6), the lower part of the square inner groove (35) is provided with a ring groove (37), and the inside of the ring groove (37) is installed with three sealing water baffle rings (38) in contact with the surface of the square inner threaded pipe (32).

9. A centrifugal bag filter according to claim 1, characterized in that: The surface of the centrifugal water tank (1) is provided with a water inlet pipe (39) at the upper part, the bottom of the centrifugal water tank (1) is installed with a sand setting tank (40), one end of the sand setting tank (40) is installed with a discharge pipe (41), the middle part of the discharge pipe (41) is installed with a valve A (42), the bottom of the filter tank (2) is installed with a water outlet pipe (43), and the middle part of the water outlet pipe (43) is installed with a valve B (44).

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