Fiber ball filter

Abstract

A fiber ball filter, comprising: a double-layer pressing plate assembly (3), comprising a first pressing plate (31) and a second pressing plate (32) arranged in sequence. First water-permeable holes (33) are formed in the first pressing plate (31), and second water-permeable holes (34) are formed in the second pressing plate (32). A lifting / lowering control assembly (4) is used for controlling the double-layer pressing plate assembly (3) to move up and down so as to be switched between a working position and a flushing position. The working position is the position of the double-layer pressing plate assembly (3) when a fiber ball filtering member is pressed, and the flushing position is the position of the double-layer pressing plate assembly (3) when the backwashing expansion rate of the fiber ball filtering member is a first preset proportion. A rotation control assembly (5) is connected to the first pressing plate (31), and controls the rotation to adjust the area of the overlapping portion of the first water-permeable holes (33) and the second water-permeable holes (34). According to the fiber ball filter, the backwashing effect of the fiber ball filtering member can be improved, the fiber ball filtering member is prevented from being damaged during backwashing, and the present invention solves the problems of fiber balls being prone to being bonded during lifting of the pressing plates after backwashing of the fiber ball filtering member, and non-uniform distribution of the fiber balls when the fiber ball filtering materials are pressed again.

Description

A fiber ball filter Technical Field

[0001] The present application relates to the technical field of water treatment devices, and in particular to a fiber ball filter. Background Art

[0002] In the hydrometallurgical industry, extraction and saponification wastewater often contain characteristic pollutants such as oil and suspended solids. Fiber ball filters are a relatively new type of precision water treatment equipment among pressure filters. Therefore, they are often used to treat extraction and saponification wastewater from the hydrometallurgical industry. The fiber balls in press-plate fiber ball filters have excellent porosity, large specific surface area, and strong interception capacity under the action of compression and deadweight, effectively removing suspended solids and oil from water. When the fiber ball filter media's interception capacity exceeds its capacity, it requires backwashing.

[0003] In existing technology, some fiberball filters directly use traditional reverse-current backwashing, resulting in poor backwashing performance. Others incorporate agitators to agitate the fiberball media while simultaneously backwashing it. This agitation or vibration-assisted backwashing method can easily damage the fiberballs. Furthermore, after flushing the fiberball media, existing pressure plate-type fiberball filters can easily cause the fiberballs to stick together when the pressure plate is lifted, leading to uneven distribution of the fiberballs when the media is re-compacted.

[0004] Summary of the Invention

[0005] The embodiment of the present application provides a fiber ball filter, which not only solves the problems of poor backwashing effect and easy damage of fiber balls during backwashing of existing fiber ball filters, but also solves the problem of easy adhesion of fiber balls when the pressure plate is lifted after backwashing, and uneven distribution of fiber balls when the fiber ball filter material is re-compacted.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions:

[0007] The embodiment of the present application provides a fiber ball filter, comprising a filter tank, a supporting filter plate, a double-layer pressing plate assembly, a lifting control assembly, a rotation control assembly, and a fiber ball filter element;

[0008] The supporting filter plate and the double-layer pressing plate assembly are sequentially arranged inside the filter tank from bottom to top; the fiber ball filter element is arranged in the area between the supporting filter plate and the double-layer pressing plate assembly inside the filter tank;

[0009] The double-layer pressing plate assembly includes a first pressing plate and a second pressing plate arranged in sequence from bottom to top, the second pressing plate being slidably connected to the inner wall of the filter tank, the first pressing plate and the second pressing plate being coaxially rotatably connected, and the first pressing plate being in close contact with the second pressing plate; a plurality of first water-permeable holes are formed on the first pressing plate, and a plurality of second water-permeable holes are formed on the second pressing plate;

[0010] The lifting control assembly is connected to the double-layer pressing plate assembly and is used to control the double-layer pressing plate assembly to move upward or downward to switch between a working position and a flushing position; the working position is directly below the flushing position, the working position is the position of the double-layer pressing plate assembly when the fiber ball filter element is compressed, and the flushing position is the position of the double-layer pressing plate assembly when the backwash expansion rate of the fiber ball filter element is a first preset ratio;

[0011] The rotation control assembly is connected to the first pressing plate and is used to control the rotation of the first pressing plate according to the operation of the lifting control assembly to adjust the area of ​​the overlapping portion of the first water permeable hole and the second water permeable hole.

[0012] In a possible implementation, according to the operation of the lifting control assembly, controlling the first pressing plate to rotate so as to adjust the area of ​​the overlapping portion between the first water permeable hole and the second water permeable hole specifically includes:

[0013] When the lifting control assembly controls the double-layer pressing plate assembly to rise from the working position to the flushing position, the rotation control assembly controls the first pressing plate to rotate, so that the ratio of the area of ​​the overlapping portion of the first water-permeable hole and the second water-permeable hole to the area of ​​the water-permeable surface of the first pressing plate decreases from a second preset ratio to a third preset ratio; the area of ​​the water-permeable surface is the area of ​​the bottom surface of the first pressing plate;

[0014] When the lifting control component controls the double-layer pressure plate assembly to descend from the flushing position to the working position, the rotation control component controls the rotation of the first pressure plate, so that the ratio of the area of ​​the overlapping part of the first water-permeable hole and the second water-permeable hole to the area of ​​the water-permeable surface of the first pressure plate increases from the third preset ratio to the second preset ratio.

[0015] In a possible implementation, the lifting control assembly includes a housing and a telescopic rod, wherein the housing is fixedly disposed on the top of the filter tank, and the telescopic rod is inserted into the interior of the filter tank;

[0016] The rotation control assembly is arranged inside the filter tank, and the rotation control assembly is connected to the telescopic rod and the first pressing plate.

[0017] In a possible implementation, the rotation control assembly includes a motor, a housing of the motor is fixedly connected to an end of the telescopic rod away from the housing, and an output shaft of the motor is fixedly connected to the first pressing plate.

[0018] In a possible implementation, the rotation control assembly includes a first transmission rod, a second transmission rod, and a guide sleeve rod;

[0019] The first transmission rod is coaxially fixedly connected to an end of the telescopic rod away from the housing;

[0020] The second transmission rod is coaxially rotatably connected to the first transmission rod, and one end of the second transmission rod away from the first transmission rod passes through the second pressing plate and is coaxially fixedly connected to the first pressing plate;

[0021] The guide sleeve is fixedly connected to the housing and coaxially sleeved on the outside of the first transmission rod and the second transmission rod close to one end of the first transmission rod;

[0022] A spiral limiting groove is provided on the outer wall of the second transmission rod, and a locking rod is provided on the inner wall of the guide sleeve, and the end of the locking rod away from the guide sleeve is slidably connected to the spiral limiting groove, and the length of the spiral limiting groove is proportional to the rotation angle of the first pressure plate relative to the second pressure plate; when the locking rod rotates from the top end of the spiral limiting groove to the bottom end, the first pressure plate rotates so that the ratio of the area of ​​the overlapping part of the first water permeable hole and the second water permeable hole to the area of ​​the water permeable surface of the first pressure plate decreases from the second preset ratio to the third preset ratio.

[0023] In one possible implementation, the rotation control assembly also includes a spring, which is coaxially sleeved on the outside of the first transmission rod, and one end of the spring close to the second transmission rod is fixedly connected to the first transmission rod, and the other end of the spring is fixedly connected to the inner wall of the guide sleeve.

[0024] In a possible implementation, a through hole is formed on the second pressing plate coaxially with the second transmission rod, and a diameter of the through hole is larger than a diameter of the second transmission rod.

[0025] In a possible implementation, the rotation control assembly further includes a rotary bearing, which is located between the first transmission rod and the second transmission rod, with one end of the rotary bearing being coaxially connected to the first transmission rod and the other end being coaxially connected to the second transmission rod.

[0026] In a possible implementation, the first water-permeable holes are elongated elliptical holes uniformly arranged on the first pressing plate, and the second water-permeable holes are circular holes uniformly arranged on the second pressing plate.

[0027] In one possible implementation, the first pressing plate is controlled to rotate so that the ratio of the area of ​​the overlapping portion of the first water permeable hole and the second water permeable hole to the area of ​​the water permeable surface of the first pressing plate decreases from a second preset ratio to a third preset ratio, specifically:

[0028] The first pressing plate is controlled to rotate so that each of the elongated elliptical holes of the first pressing plate changes from overlapping with two of the circular holes to overlapping with one of the circular holes.

[0029] In one possible implementation, the first pressing plate is controlled to rotate so that the ratio of the area of ​​the overlapping portion of the first water permeable hole and the second water permeable hole to the area of ​​the water permeable surface of the first pressing plate increases from a third preset ratio to a second preset ratio, specifically:

[0030] The first pressing plate is controlled to rotate so that each of the elongated elliptical holes of the first pressing plate changes from overlapping with one of the circular holes to overlapping with two of the circular holes.

[0031] In a possible implementation, the first water-permeable holes are circular holes uniformly provided on the first pressing plate, and the second water-permeable holes are elongated elliptical holes uniformly provided on the second pressing plate.

[0032] In a possible implementation, the side wall of the second pressing plate is provided with at least one limiting sliding block;

[0033] At least one limiting sliding groove cooperating with the limiting sliding block is vertically provided on the inner wall of the filter tank, and the limiting sliding block is connected in the limiting sliding groove.

[0034] In a possible implementation, there are four limit sliders, and the four limit sliders are evenly arranged on the side wall of the second pressure plate in a circumferential direction.

[0035] In a possible implementation, the double-layer compression plate assembly further includes a buckle ring;

[0036] The buckle ring is circumferentially arranged on the outer edges of the first pressure plate and the second pressure plate. The cross-section of the buckle ring along its axial direction is a U-shaped groove. The first pressure plate and the second pressure plate are both arranged in the U-shaped groove. The second pressure plate is fixedly connected to the buckle ring, and the first pressure plate rotates relative to the U-shaped groove.

[0037] The embodiment of the present application provides a fiber ball filter, in which the distance between the double-layer pressing plate assembly and the supporting filter plate can be adjusted by a lifting control assembly to adjust the volume of the area for placing the fiber ball filter element, and the first pressing plate can be controlled to rotate relative to the second pressing plate by a rotation control assembly, thereby adjusting the water permeability of the double-layer pressing plate assembly. When backwashing the fiber ball filter element, the lifting control assembly is used to lift the double-layer pressing plate assembly to a height at which the fiber ball filter element expands to a first preset ratio of the fiber ball filter element backwash expansion rate, and the rotation control assembly is used to control the first pressing plate to rotate, thereby reducing the water permeability of the double-layer pressing plate assembly, thereby making the turbulence disturbance more intense when the backwash water flows through the fiber ball filter element, and then flushing the fiber ball filter element by the backwash water, which not only effectively improves the backwash effect of the fiber ball filter element and saves water, but also avoids the use of auxiliary equipment such as a stirrer, thereby reducing the damage of the fiber balls;

[0038] At the same time, after the backwash is completed, the double-layer pressing plate assembly is controlled to descend, and the first pressing plate is controlled to rotate to sweep off the fiber balls adhered to its bottom. The first pressing plate can also push and sweep the top of the fiber ball filter element while rotating, sweeping the uneven surface fiber balls on the top of the fiber ball filter element to the lower part to fill it up, so that the arrangement of the fiber balls is more uniform during compression;

[0039] Furthermore, during the rotation of the first pressure plate, the water permeability of the double-layer compression plate assembly can be increased, so that during the water production process, the wastewater flows through the double-layer compression plate assembly at a lower speed, reducing turbulent disturbances, thereby improving the sewage interception efficiency of the fiber ball filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 is a schematic diagram of the overall structure of a fiber ball filter provided in an embodiment of the present application;

[0041] FIG2 is a schematic structural diagram of a double-layer compression plate of a fiber ball filter provided in an embodiment of the present application, when the ratio of the area of ​​the overlapping portion of the first water-permeable hole and the second water-permeable hole to the area of ​​the water-permeable surface of the first compression plate is 20%;

[0042] FIG3 is an enlarged view of part A in the overall structural diagram of a fiber ball filter provided in an embodiment of the present application;

[0043] FIG4 is a schematic structural diagram of a second pressing plate of a fiber ball filter provided in an embodiment of the present application;

[0044] FIG5 is a schematic structural diagram of a first pressure plate of a fiber ball filter provided in an embodiment of the present application.

[0045] Figure numbers and descriptions: 1. Filter tank; 11. Water inlet; 12. Exhaust port; 13. Water outlet; 14. Sewage outlet; 15. Sight glass; 16. Manhole; 2. Load-bearing filter plate; 3. Double-layer compression plate assembly; 31. First pressure plate; 32. Second pressure plate; 321. Through hole; 322. Limit slider; 33. First water-permeable hole; 34. Second water-permeable hole; 35. Buckle ring; 4. Lifting control assembly; 41. Shell; 42. Telescopic rod; 5. Rotation control assembly; 51. First transmission rod; 52. Second transmission rod; 53. Guide sleeve; 54. Spiral limiting slide; 55. Locking rod; 56. Rotating bearing; 6. Spring. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "multiple" means two or more. In addition, the use of "based on" or "according to" means openness and inclusiveness, because the process, steps, calculations or other actions "based on" or "according to" one or more of the conditions or values ​​may be based on additional conditions or values ​​beyond the stated in practice.

[0048] In order to solve the problems of poor backwashing effect of existing fiber ball filters, easy damage of fiber balls, easy adhesion of fiber balls when the pressure plate is lifted after backwashing, and uneven distribution of fiber balls when the fiber ball filter material is re-compacted, an embodiment of the present application provides a fiber ball filter.

[0049] As shown in Figures 1-3, a fiber ball filter includes a filter tank 1, a supporting filter plate 2, a double-layer compression plate assembly 3, a lifting control assembly 4, a rotation control assembly 5 and a fiber ball filter element.

[0050] Among them, the filter tank 1 is a vertical water treatment filter tank.

[0051] Fiber ball filter elements include multiple fiber balls, also known as fiber ball filter media. They are spherical filter media made of polyester, polypropylene or acrylic fibers. They have the advantages of good elasticity, use of highly aldehyded vinylon and shaped polyester fibers as raw materials, no floating on the water surface, large gaps, long working cycle and small head loss.

[0052] The supporting filter plate 2 and the double-layer pressing plate assembly 3 are sequentially arranged inside the filter tank 1 from bottom to top; the fiber ball filter element is arranged in the area between the supporting filter plate 2 and the double-layer pressing plate assembly 3 inside the filter tank 1.

[0053] The supporting filter plate 2 is a circular metal plate with a plurality of filter holes evenly distributed on the metal plate, and the diameter of the filter holes is smaller than the diameter of the fiber balls.

[0054] The supporting filter plate 2 is coaxially fixed in the filter tank 1 , dividing the filter tank 1 into an upper area and a lower area.

[0055] The double-layer compression plate assembly 3 is a double-layer circular plate, which is coaxially arranged with the supporting filter plate 2 in the upper area. The double-layer compression plate assembly 3 can move upward or downward in the upper area, dividing the upper area into an upper first area and a lower second area. The fiber ball filter element is placed in the second area, and the fiber balls in the second area can be compressed by the double-layer compression plate assembly 3.

[0056] The double-layer pressure plate assembly 3 includes a first pressure plate 31 and a second pressure plate 32 arranged in sequence from bottom to top. The second pressure plate 32 is connected to the inner wall of the filter tank 1 for sliding up and down. The first pressure plate 31 and the second pressure plate 32 are coaxially connected for rotation. The first pressure plate 31 is tightly attached to the second pressure plate 32. A plurality of first water-permeable holes 33 are opened on the first pressure plate 31, and a plurality of second water-permeable holes 34 are opened on the second pressure plate 32.

[0057] Among them, the second pressure plate 32 is connected to the inner wall of the filter tank 1 for sliding up and down, and is used to limit the movement direction of the second pressure plate 32. The first pressure plate 31 and the second pressure plate 32 are coaxially connected for rotation. By rotating the first pressure plate 31, the position of the first water permeable hole 33 on the first pressure plate 31 can be adjusted, thereby adjusting the size of the overlapping area of ​​the first water permeable hole 33 and the second water permeable hole 34. Only the overlapping area of ​​the first water permeable hole 33 and the second water permeable hole 34 can allow water to flow through. That is to say, the larger the area of ​​the overlapping area of ​​the first water permeable hole 33 and the second water permeable hole 34, the higher the water permeability of the double-layer compression plate assembly 3.

[0058] The lifting control assembly 4 is connected to the double-layer pressing plate assembly 3 and is used to control the double-layer pressing plate assembly 3 to move upward or downward to switch between the working position and the flushing position.

[0059] Among them, the working position is directly below the flushing position. The working position is the position of the double-layer compression plate assembly 3 when the fiber ball filter is compressed. The flushing position is the position of the double-layer compression plate assembly 3 when the backwash expansion rate of the fiber ball filter is the first preset ratio.

[0060] The backwash expansion rate refers to the ratio of the increased thickness of the fiber ball filter element after expansion during backwashing to the thickness of the fiber ball filter element before backwashing.

[0061] The first preset ratio is 20%. At this time, within a limited space, the pores in the fiber ball filter element will be correspondingly enlarged, which can effectively improve the flushing effect of the flushing water on the fiber ball filter element.

[0062] Specifically, the function of the lifting control component 4 is mainly to control the rise or fall of the double-layer pressing plate component 3. The lifting control component 4 can be an electric lifting rod, an air cylinder, an oil cylinder, etc.

[0063] The rotation control assembly 5 is connected to the first pressing plate 31 and is used to control the rotation of the first pressing plate 31 according to the operation of the lifting control assembly 4 to adjust the area of ​​the overlapping portion of the first water permeable hole 33 and the second water permeable hole 34.

[0064] The rotation control assembly 5 is a control mechanism capable of controlling the rotation of the first pressing plate 31 , and may be a control assembly linked to the lifting control assembly 4 , or may be an independent motor control mechanism.

[0065] The rotation of the first pressure plate 31 drives the first pressure plate 31 above it to rotate, thereby driving the relative positions of the first water-permeable hole 33 on the first pressure plate 31 and the second water-permeable hole 34 on the second pressure plate 32 to change, and then by changing the area of ​​the overlapping part of the first water-permeable hole 33 and the second water-permeable hole 34, the water permeability of the double-layer compression plate assembly 3 is changed.

[0066] In an embodiment of the present application, when the rotation control component 5 is an independent motor control mechanism, the rotation control component 5 includes a motor, the motor housing is connected to the lifting control component 4, and the output shaft of the motor is coaxially fixed to the first pressure plate 31. The rotation of the output shaft of the motor can control the rotation of the first pressure plate 31, thereby adjusting the area of ​​the overlapping part of the first water permeable hole 33 and the second water permeable hole 34.

[0067] At the same time, the lifting control component 4, such as the oil cylinder, the shell of the oil cylinder is fixedly connected to the filter tank 1, and the piston end of the oil cylinder is connected to the second pressure plate 32, which is used to drive the first pressure plate 31 and the second pressure plate 32 to move upward or downward as a whole.

[0068] The embodiment of the present application provides a fiber ball filter, in which the distance between the double-layer compression plate assembly 3 and the supporting filter plate 2 can be adjusted by the lifting control component 4 to adjust the volume of the area for placing the fiber ball filter element, and the first compression plate 31 can be controlled to rotate relative to the second compression plate 32 by the rotation control component 5, thereby adjusting the water permeability of the double-layer compression plate assembly 3. When backwashing the fiber ball filter element, the double-layer compression plate assembly 3 is lifted to a height at which the backwash expansion rate of the fiber ball filter element is 20% by the lifting control component 4, and the first compression plate 31 is controlled to rotate by the rotation control component 5 to reduce the water permeability of the double-layer compression plate assembly 3, so that the turbulent disturbance when the backwash water flows through the fiber ball filter element is more intense, and then the fiber ball filter element is flushed by the backwash water, which not only effectively improves the backwash effect of the fiber ball filter element and saves water, but also avoids the use of auxiliary equipment such as agitators, reducing fiber ball damage; during the rotation and upward rotation of the first compression plate 31, the first compression plate 31 rotates to sweep off the fiber balls adhered to its bottom.

[0069] During backwashing, the backwash expansion rate of the fiber ball filter element is 20%. Compared with the backwash expansion rate of more than 50% in the prior art, the present invention can ensure that the pores in the fiber ball filter element will be correspondingly enlarged within a limited space, thereby increasing the probability of mutual collision and scrubbing between the fiber balls, and effectively improving the flushing effect of the flushing water on the fiber ball filter element.

[0070] At the same time, after the backwash is completed, the double-layer pressing plate assembly 3 is controlled to descend, and the first pressing plate 31 can also push and sweep the top of the fiber ball filter element when rotating, sweeping the uneven surface fiber balls on the top of the fiber ball filter element to the lower place to fill it up, so that the arrangement of the fiber balls is more uniform during compression.

[0071] Furthermore, during the rotation of the first pressure plate 31, the water permeability of the double-layer compression plate assembly 3 can be increased, so that during the water production process, the wastewater flows through the double-layer compression plate assembly 3 at a lower speed, reducing turbulent disturbances, thereby improving the sewage interception efficiency of the fiber ball filter element.

[0072] Furthermore, according to the operation of the lifting control assembly 4, the first pressing plate 31 is controlled to rotate, and the area of ​​the overlapping portion of the first water permeable hole 33 and the second water permeable hole 34 is adjusted, specifically including:

[0073] When the lifting control assembly 4 controls the double-layer pressing plate assembly 3 to rise from the working position to the flushing position, the rotation control assembly 5 controls the first pressing plate 31 to rotate, so that the ratio of the area of ​​the overlapping portion of the first water-permeable hole 33 and the second water-permeable hole 34 to the area of ​​the water-permeable surface of the first pressing plate 31 decreases from the second preset ratio to the third preset ratio; the area of ​​the water-permeable surface is the area of ​​the bottom surface of the first pressing plate 31;

[0074] When the lifting control component 4 controls the double-layer pressure plate component 3 to descend from the flushing position to the working position, the first pressure plate 31 is controlled to rotate by the rotation control component 5, so that the ratio of the area of ​​the overlapping part of the first water permeable hole 33 and the second water permeable hole 34 to the area of ​​the water permeable surface of the first pressure plate 31 increases from the third preset ratio to the second preset ratio.

[0075] The second preset ratio is 40%, and the third preset ratio is 20%.

[0076] The area of ​​the water-permeable surface of the first pressing plate 31 refers to the surface of the first pressing plate 31 through which water can pass, and the area of ​​the water-permeable surface is equal to the area of ​​the bottom surface of the first pressing plate 31 .

[0077] Specifically, when the fiber ball filter performs normal sewage interception and filtration work, the double-layer compression plate assembly 3 is in the working position, that is, the double-layer compression plate assembly 3 compresses the fiber ball filter element to ensure that the pores of the fiber ball filter element can meet the filtration requirements of the fiber ball filter; at the same time, the area of ​​the overlapping part of the first water permeable hole 33 and the second water permeable hole 34 accounts for 40% of the area of ​​the water permeable surface of the first pressure plate 31, so that the water flow can pass through the double-layer compression plate assembly 3 at a slower flow rate, avoiding the fast water flow rate causing disturbance to the fiber ball filter element, affecting the sewage interception effect of the fiber ball filter element.

[0078] When the fiber ball filter is flushing the fiber ball filter element, the double-layer compression plate assembly 3 is moved to the flushing position, that is, the height when the backwash expansion rate of the fiber ball filter element is 20%, and the pores of the fiber ball filter element are appropriately increased so that the flushing water can more easily carry away the dirt on the fiber ball filter element; at the same time, the area of ​​the overlapping part of the first water permeable hole 33 and the second water permeable hole 34 is made to account for 20% of the area of ​​the permeable surface of the first pressure plate 31, thereby increasing the flow rate of water when passing through the double-layer compression plate assembly 3, forming a backflow phenomenon, and increasing the degree of turbulent disturbance of the water flow, so that the fiber balls collide and scrub each other in a limited space, and efficiently backwash and regenerate, and can also reduce the amount of backwash water used, saving water.

[0079] Furthermore, the lifting control assembly 4 includes a housing 41 and a telescopic rod 42. The housing 41 is fixedly arranged on the top of the filter tank 1, and the telescopic rod 42 is inserted into the interior of the filter tank 1.

[0080] The rotation control assembly 5 is disposed inside the filter tank 1 , and the rotation control assembly 5 is connected to the telescopic rod and the first pressing plate 31 .

[0081] Specifically, the shell 41 is fixedly installed directly above the filter tank 1 by a fixing frame or bolts, and one end of the telescopic rod 42 passing through the interior of the filter tank 1 is fixedly connected to the first pressure plate 31 to drive the double-layer compression plate assembly 3 to rise or fall as a whole.

[0082] In one embodiment of the present application, when the rotation control component 5 is an independent motor control mechanism, the rotation control component 5 includes a motor, the motor housing is fixedly connected to the end of the telescopic rod 42 away from the shell 41, and the output shaft of the motor is fixedly connected to the first pressure plate 31.

[0083] Specifically, the end of the telescopic rod 42 away from the housing 41 defines a motor receiving slot, within which the motor housing is disposed. The motor's output shaft is coaxially fixed to the first pressure plate 31, while the telescopic rod is fixed to the fixed axis of the second pressure plate 32. Rotation of the motor's output shaft controls the rotation of the first pressure plate 31, thereby adjusting the area of ​​the overlapping portion between the first and second water-permeable holes 33 and 34. In another embodiment of the present application, when the rotation control assembly 5 is linked to the lifting control assembly 4, the rotation control assembly 5 includes a first transmission rod 51, a second transmission rod 52, and a guide sleeve rod 53.

[0084] The first transmission rod 51 is coaxially fixedly connected to an end of the telescopic rod 42 away from the housing 41 .

[0085] The second transmission rod 52 is coaxially rotatably connected to the first transmission rod 51 . One end of the second transmission rod 52 away from the first transmission rod 51 passes through the second pressing plate 32 and is coaxially fixedly connected to the first pressing plate 31 .

[0086] The guide sleeve 53 is fixedly connected to the housing 41 and coaxially sleeved outside the first transmission rod 51 and the second transmission rod 52 close to one end of the first transmission rod 51 .

[0087] A spiral limiting groove 54 is provided on the outer wall of the second transmission rod 52, and a locking rod 55 is provided on the inner wall of the guide sleeve 53. The end of the locking rod 55 away from the guide sleeve 53 is slidably connected to the spiral limiting groove 54. The length of the spiral limiting groove 54 is proportional to the rotation angle of the first pressure plate 31 relative to the second pressure plate 32.

[0088] When the locking rod 55 rotates from the top end to the bottom end of the spiral limiting slide groove 54, the first pressure plate 31 rotates so that the ratio of the area of ​​the overlapping part of the first water permeable hole 33 and the second water permeable hole 34 to the area of ​​the water permeable surface of the first pressure plate 31 decreases from the second preset ratio to the third preset ratio.

[0089] When the locking rod 55 rotates from the bottom end to the top end of the spiral limiting slide groove 54, the first pressure plate 31 rotates so that the ratio of the area of ​​the overlapping part of the first water permeable hole 33 and the second water permeable hole 34 to the area of ​​the water permeable surface of the first pressure plate 31 increases from the third preset ratio to the second preset ratio.

[0090] Specifically, taking the rising process of the double-layer pressure plate assembly 3 as an example, the telescopic rod of the lifting control assembly 4 contracts and drives the first transmission rod 51 to move upward. While the first transmission rod 51 moves upward, it drives the first pressure plate 31 and the second pressure plate 32 to move upward through the second transmission rod 52. While the second transmission rod 52 moves upward, it drives the first pressure plate 31 to rotate under the action of the spiral limiting groove 54 and the locking rod 55. When the locking rod 55 slides to the bottom end of the spiral limiting groove 54, the first pressure plate 31 rotates so that the area of ​​the overlapping part of the first water permeable hole 33 and the second water permeable hole 34 accounts for 20% of the area of ​​the water permeable surface of the first pressure plate 31.

[0091] The guide sleeve 53 is also used to protect the first transmission rod 51 and the second transmission rod 52 that pass through the guide sleeve 53.

[0092] Furthermore, the lifting control component 4 is a hydraulic cylinder.

[0093] Hydraulic cylinders are hydraulic actuators that convert hydraulic energy into mechanical energy, performing linear reciprocating motion. They are simple in structure and reliable in operation. Using them to achieve reciprocating motion eliminates the need for a reduction gear, eliminates transmission backlash, and provides smooth motion. Therefore, they are widely used in the hydraulic systems of various machines.

[0094] In the embodiment of the present application, the lifting control component 4 adopts a hydraulic cylinder.

[0095] Furthermore, the rotation control assembly 5 also includes a spring 6, which is coaxially sleeved on the outside of the first transmission rod 51, and one end of the spring 6 close to the second transmission rod 52 is fixedly connected to the first transmission rod 51, and the other end of the spring 6 is fixedly connected to the inner wall of the guide sleeve 53.

[0096] Specifically, after the hydraulic cylinder moves the double-layer pressing plate assembly 3 to the working position, the hydraulic cylinder can be closed and the spring can be used to provide a lasting downward force for the double-layer pressing plate assembly 3, thereby saving energy consumption of the hydraulic cylinder.

[0097] As shown in FIG. 4 , further, a through hole 321 is formed on the second pressing plate 32 coaxially with the second transmission rod 52 , and a diameter of the through hole 321 is larger than a diameter of the second transmission rod 52 .

[0098] Specifically, the second transmission rod 52 passes through the through hole 321 and is coaxially fixedly connected to the first pressing plate 31. The provision of the through hole 321 facilitates the connection between the first pressing plate 31 and the second transmission rod 52, has a simple structure, and is low in cost.

[0099] As shown in FIG3 , the rotation control assembly 5 further includes a rotation bearing 56 , which is located between the first transmission rod 51 and the second transmission rod 52 , and has one end coaxially connected to the first transmission rod 51 and the other end coaxially connected to the second transmission rod 52 .

[0100] Specifically, the provision of the rotary bearing 56 facilitates the coaxial rotation connection between the first transmission rod 51 and the second transmission rod 52 , and has a simple structure and low implementation cost.

[0101] As shown in FIG. 4 and FIG. 5 , further, the first water-permeable holes 33 are long elliptical holes uniformly provided on the first pressing plate 31 , and the second water-permeable holes 34 are circular holes uniformly provided on the second pressing plate 32 .

[0102] Specifically, the first water-permeable holes 33 are arranged in multiple circles on the first pressure plate 31 in a concentric circle shape, and the long elliptical holes in each circle are circumferentially arranged;

[0103] The second water-permeable holes 34 match the first water-permeable holes 33 and are arranged in multiple circles in a concentric circle shape, with each long elliptical hole corresponding to two circular holes.

[0104] Furthermore, the first pressing plate 31 is controlled to rotate so that the ratio of the area of ​​the overlapping portion of the first water permeable hole 33 and the second water permeable hole 34 to the area of ​​the water permeable surface of the first pressing plate 31 decreases from the second preset ratio to the third preset ratio, specifically:

[0105] The first pressing plate 31 is controlled to rotate so that each of the elongated elliptical holes of the first pressing plate 31 changes from overlapping with two circular holes to overlapping with one circular hole.

[0106] Furthermore, the first pressing plate 31 is controlled to rotate so that the ratio of the area of ​​the overlapping portion of the first water permeable hole 33 and the second water permeable hole 34 to the area of ​​the water permeable surface of the first pressing plate 31 increases from the third preset ratio to the second preset ratio, specifically:

[0107] The first pressing plate 31 is controlled to rotate so that each of the elongated elliptical holes of the first pressing plate 31 changes from overlapping with one circular hole to overlapping with two circular holes.

[0108] That is to say, when each elongated elliptical hole of the second pressure plate 32 overlaps with a circular hole of the first pressure plate 31, the area of ​​the overlapping part of the first water-permeable hole 33 and the second water-permeable hole 34 accounts for 20% of the area of ​​the water-permeable surface of the first pressure plate 31; when each elongated elliptical hole of the second pressure plate 32 overlaps with two circular holes of the first pressure plate 31, the area of ​​the overlapping part of the first water-permeable hole 33 and the second water-permeable hole 34 accounts for 40% of the area of ​​the water-permeable surface of the first pressure plate 31.

[0109] Furthermore, the first water-permeable holes 33 are circular holes uniformly provided on the first pressing plate 31 , and the second water-permeable holes 34 are long elliptical holes uniformly provided on the second pressing plate 32 .

[0110] In another embodiment of the present application, the first water-permeable hole 33 on the first pressure plate 31 can be an elongated elliptical hole, and the second water-permeable hole 34 on the second pressure plate 32 can be a circular hole. The water permeability of the double-layer compression plate assembly 3 can be changed by rotating the first pressure plate to change the overlap between the elongated elliptical hole and the circular hole.

[0111] Furthermore, at least one limiting slider 322 is provided on the side wall of the second pressing plate 32;

[0112] At least one limiting sliding groove cooperating with the limiting sliding block 322 is vertically provided on the inner wall of the filter tank 1 , and the limiting sliding block 322 is connected in the limiting sliding groove.

[0113] In the embodiment of the present application, the function of the limiting sliding groove is only to cooperate with the limiting sliding block 322 to limit the second pressing plate 32 to prevent the second pressing plate 32 from rotating along with the rotation of the first pressing plate 31.

[0114] In another embodiment of the present application, a slide groove can be set on the side wall of the second pressure plate 32, and a protruding slide rail can be vertically set on the inner wall of the filter tank 1, so that the second pressure plate 32 can be limited by the cooperation between the slide rail and the slide groove.

[0115] Furthermore, there are four limiting sliders 322 , and the four limiting sliders 322 are evenly arranged on the side wall of the second pressure plate 32 in the circumferential direction.

[0116] In the embodiment of the present application, the limiting slider 322 is uniformly protruded in the circumferential direction and is provided on the outside of the second pressure plate 32 , and the limiting sliding groove is provided corresponding to the limiting slider 322 .

[0117] Furthermore, the double-layer compression plate assembly 3 further includes a buckle ring 35;

[0118] The buckle ring 35 is circumferentially arranged on the outer edges of the first pressure plate 31 and the second pressure plate 32. The cross-section of the buckle ring 35 along its axial direction is a U-shaped groove. The first pressure plate 31 and the second pressure plate 32 are both arranged in the U-shaped groove. The second pressure plate 32 is fixedly connected to the buckle ring 35, and the first pressure plate 31 rotates relative to the U-shaped groove.

[0119] Specifically, the first pressing plate 31 and the second pressing plate 32 are connected by a buckle ring, which has a simple structure and is easy to use.

[0120] Furthermore, a water inlet 11 is provided at the top of the filter tank 1 , through which water is added into the filter tank 1 and the water inlet 11 is also used to discharge backwash water.

[0121] The top of the filter tank 1 is also connected to an exhaust port 12, through which the gas in the filter tank 1 is discharged.

[0122] The bottom of the filter tank 1 is connected to the chamber above the supporting filter plate 2 and is provided with a water outlet 13 for discharging water in the filter tank 1 and also for introducing backwash water.

[0123] A sewage outlet 14 is provided at the bottom of the filter tank 1 for draining the sewage in the filter tank 1 .

[0124] A viewing mirror 15 is provided on the side wall of the filter tank 1 to facilitate the user to observe the situation inside the filter tank 1 .

[0125] A manhole 16 is provided on the side wall of the filter tank 1 above the supporting filter plate 2 to facilitate users to enter and inspect the internal structure of the filter tank 1.

[0126] The sight glass 15 is located in the upper area of ​​the manhole 16 .

[0127] In the embodiment of the present application, the filtration rate of the fiber ball filter is 20 to 40 m / h. After the fiber ball filter has been running for a period of time, when the dirt holding capacity of the fiber ball filter element reaches the limit value, that is, before the fiber ball filter element is about to penetrate, the valves on the water inlet 11 and the water outlet 13 are closed, and the hydraulic cylinder system is turned on, so that the piston rod of the hydraulic cylinder system overcomes the gravity of the first pressure plate 31 and the second pressure plate 32, and the elastic force of the spring 6, and begins to shrink. The piston rod drives the first transmission rod 51 to move upward, and the first transmission rod 51 drives the second transmission rod 52 to move upward. Under the action of the locking rod 55 and the spiral limiting groove 54, the second transmission rod 52 rotates coaxially relative to the first transmission rod 51 during the upward movement, driving the first pressure plate 31 to rotate.

[0128] During the upward rotation of the first pressure plate 31, the fiber balls adhered to the first pressure plate 31 are rotated and swept off; when the first pressure plate 31 rises to the flushing position, the piston rod contracts to the maximum, and the locking rod 55 slides to the bottom end of the spiral limiting groove 54. At this time, each long elliptical hole of the second pressure plate 32 overlaps with a circular hole of the first pressure plate 31, so that the water permeability of the double-layer compression plate assembly 3 is 20%.

[0129] Afterward, the valves on the water inlet 11 and outlet 13 are opened to allow backwash water to flow into the fiber ball filter element. The entire flushing process lasts for 7 minutes. At a water permeability of 20%, the double-layer compression plate assembly 3 increases the flow rate through the double-layer compression plate assembly 3, creating a backflow phenomenon and increasing the degree of turbulent water flow. Simultaneously, the fiber ball filter element's backwash expansion rate is at its highest level at 20%. Flushing the fiber ball filter element within this confined space causes the fiber balls to collide and scrub against each other, resulting in efficient backwash regeneration and reduced backwash water usage.

[0130] After backwashing is completed, the piston rod of the hydraulic cylinder is released. Under the action of hydraulic reversal and spring 6, the piston rod drives the first transmission rod 51 and the second transmission rod 52 to move downward. Under the action of the locking rod 55 and the spiral limiting groove 54, the second transmission rod 52 rotates coaxially relative to the first transmission rod 51 during the downward movement, driving the first pressure plate 31 to rotate.

[0131] During the downward rotation of the first pressure plate 31, the fiber balls that were washed out during the backwashing process will be flattened by the rotation of the first pressure plate 31 until the double-layer compression plate assembly 3 compresses the fiber ball filter element. At this time, the piston rod is extended to the longest, and the locking rod 55 slides to the top of the spiral limiting groove 54. At this time, the water permeability of the double-layer compression plate assembly 3 is 40%.

[0132] Finally, open the valve on the exhaust port 12, open the valve on the sewage outlet 14, and discharge part of the sewage generated during the compression of the fiber ball filter element. Open the valve on the water inlet 11, filter and wash for 1 minute, close the valve on the sewage outlet 14, open the valve on the water outlet 13, empty the gas in the filter tank 1, and then close the valve on the exhaust port 12. At this time, the fiber ball filter enters the production state, the water permeability of the double-layer compression plate assembly 3 is 40%, and the flow rate of water passing through the double-layer compression plate assembly 3 is slow, which will not cause disturbance to the fiber ball filter element, effectively improving the pollution interception efficiency of the fiber ball filter.

[0133] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A fiber ball filter, characterized in that: It comprises a filter tank (1), a supporting filter plate (2), a double-layer pressing plate assembly (3), a lifting control assembly (4), a rotation control assembly (5) and a fiber ball filter element; The supporting filter plate (2) and the double-layer pressing plate assembly (3) are sequentially arranged inside the filter tank (1) from bottom to top; the fiber ball filter element is arranged in the area between the supporting filter plate (2) and the double-layer pressing plate assembly (3) inside the filter tank (1); The double-layer pressing plate assembly (3) comprises a first pressing plate (31) and a second pressing plate (32) which are arranged in sequence from bottom to top, the second pressing plate (32) being slidably connected to the inner wall of the filter tank (1) up and down, the first pressing plate (31) and the second pressing plate (32) being coaxially rotatably connected, and the first pressing plate (31) being closely attached to the second pressing plate (32); a plurality of first water-permeable holes (33) are provided on the first pressing plate (31), and a plurality of second water-permeable holes (34) are provided on the second pressing plate (32); The lifting control assembly (4) is connected to the double-layer pressing plate assembly (3) and is used to control the double-layer pressing plate assembly (3) to move upward or downward so as to switch between a working position and a flushing position; the working position is directly below the flushing position, the working position is the position of the double-layer pressing plate assembly (3) when the fiber ball filter element is compressed, and the flushing position is the position of the double-layer pressing plate assembly (3) when the backwash expansion rate of the fiber ball filter element is a first preset ratio; The rotation control assembly (5) is connected to the first pressing plate (31) and is used to control the rotation of the first pressing plate (31) according to the operation of the lifting control assembly (4) to adjust the area of ​​the overlapping portion between the first water permeable hole (33) and the second water permeable hole (34).

2. The fiber ball filter according to claim 1, characterized in that: According to the operation of the lifting control assembly (4), the first pressing plate (31) is controlled to rotate so as to adjust the area of ​​the overlapping portion between the first water permeable hole (33) and the second water permeable hole (34), specifically comprising: When the lifting control component (4) controls the double-layer pressing plate component (3) to rise from the working position to the flushing position, the first pressing plate (31) is controlled to rotate by the rotation control component (5), so that the ratio of the area of ​​the overlapping portion of the first water-permeable hole (33) and the second water-permeable hole (34) to the area of ​​the water-permeable surface of the first pressing plate (31) decreases from the second preset ratio to the third preset ratio; the area of ​​the water-permeable surface is the area of ​​the bottom surface of the first pressing plate (31); When the lifting control component (4) controls the double-layer pressing plate component (3) to descend from the flushing position to the working position, the first pressing plate (31) is controlled to rotate by the rotation control component (5), so that the ratio of the area of ​​the overlapping portion of the first water-permeable hole (33) and the second water-permeable hole (34) to the area of ​​the water-permeable surface of the first pressing plate (31) increases from the third preset ratio to the second preset ratio.

3. The fiber ball filter according to claim 1 or 2, characterized in that: The lifting control assembly (4) comprises a housing (41) and a telescopic rod (42), wherein the housing (41) is fixedly arranged on the top of the filter tank (1), and the telescopic rod (42) is inserted into the interior of the filter tank (1); The rotation control assembly (5) is arranged inside the filter tank (1), and the rotation control assembly (5) is connected to the telescopic rod (42) and the first pressing plate (31).

4. The fiber ball filter according to claim 3, characterized in that: The rotation control assembly (5) comprises a motor, the housing of the motor is fixedly connected to an end of the telescopic rod (42) away from the housing (41), and the output shaft of the motor is fixedly connected to the first pressing plate (31).

5. The fiber ball filter according to claim 3, characterized in that: The rotation control assembly (5) comprises a first transmission rod (51), a second transmission rod (52) and a guide sleeve rod (53); The first transmission rod (51) is coaxially fixedly connected to an end of the telescopic rod (42) away from the housing (41); The second transmission rod (52) is coaxially rotatably connected to the first transmission rod (51); one end of the second transmission rod (52) away from the first transmission rod (51) passes through the second pressing plate (32) and is coaxially fixedly connected to the first pressing plate (31); The guide sleeve rod (53) is fixedly connected to the housing (41) and is coaxially sleeved on the outside of the first transmission rod (51) and the second transmission rod (52) close to one end of the first transmission rod (51); The outer wall of the second transmission rod (52) is provided with a spiral limiting groove (54), and the inner wall of the guide sleeve rod (53) is provided with a locking rod (55). The end of the locking rod (55) away from the guide sleeve rod (53) is slidably connected to the spiral limiting groove (54), and the length of the spiral limiting groove (54) is proportional to the rotation angle of the first pressure plate (31) relative to the second pressure plate (32); when the locking rod (55) rotates from the top end of the spiral limiting groove (54) to the bottom end, the first pressure plate (31) rotates so that the ratio of the area of ​​the overlapping part of the first water permeable hole (33) and the second water permeable hole (34) to the area of ​​the water permeable surface of the first pressure plate (31) decreases from the second preset ratio to the third preset ratio.

6. The fiber ball filter according to claim 4, characterized in that: The rotation control assembly (5) further comprises a spring (6), wherein the spring (6) is coaxially sleeved on the outside of the first transmission rod (51), and one end of the spring (6) close to the second transmission rod (52) is fixedly connected to the first transmission rod (51), and the other end of the spring (6) is fixedly connected to the inner wall of the guide sleeve rod (53).

7. The fiber ball filter according to claim 4, characterized in that: A through hole (321) is provided on the second pressing plate (32) coaxially with the second transmission rod (52), and the diameter of the through hole (321) is greater than the diameter of the second transmission rod (52).

8. The fiber ball filter according to claim 4, characterized in that: The rotation control assembly (5) further comprises a rotation bearing (56), which is located between the first transmission rod (51) and the second transmission rod (52), and has one end coaxially connected to the first transmission rod (51) and the other end coaxially connected to the second transmission rod (52).

9. The fiber ball filter according to claim 2, characterized in that: The first water-permeable holes (33) are long elliptical holes evenly arranged on the first pressing plate (31), and the second water-permeable holes (34) are circular holes evenly arranged on the second pressing plate (32).

10. The fiber ball filter according to claim 9, characterized in that: The first pressing plate (31) is controlled to rotate so that the ratio of the area of ​​the overlapping portion of the first water permeable hole (33) and the second water permeable hole (34) to the area of ​​the water permeable surface of the first pressing plate (31) decreases from a second preset ratio to a third preset ratio, specifically: The first pressing plate (31) is controlled to rotate so that each of the elongated elliptical holes of the first pressing plate (31) changes from overlapping with two of the circular holes to overlapping with one of the circular holes.

11. The fiber ball filter according to claim 9, characterized in that: The first pressing plate (31) is controlled to rotate so that the ratio of the area of ​​the overlapping portion of the first water permeable hole (33) and the second water permeable hole (34) to the area of ​​the water permeable surface of the first pressing plate (31) increases from a third preset ratio to a second preset ratio, specifically: The first pressing plate (31) is controlled to rotate so that each of the elongated elliptical holes of the first pressing plate (31) changes from overlapping with one of the circular holes to overlapping with two of the circular holes.

12. The fiber ball filter according to claim 1, characterized in that: The first water-permeable holes (33) are circular holes evenly arranged on the first pressing plate (31), and the second water-permeable holes (34) are long elliptical holes evenly arranged on the second pressing plate (32).

13. The fiber ball filter according to claim 1, characterized in that: The side wall of the second pressing plate (32) is provided with at least one limiting sliding block (322); At least one limiting sliding groove cooperating with the limiting sliding block (322) is vertically arranged on the inner wall of the filter tank (1), and the limiting sliding block (322) is connected in the limiting sliding groove.

14. The fiber ball filter according to claim 13, characterized in that: There are four limit sliding blocks (322), and the four limit sliding blocks (322) are evenly arranged on the side wall of the second pressing plate (32) in the circumferential direction.

15. The fiber ball filter according to claim 1, characterized in that: The double-layer pressing plate assembly (3) further comprises a buckle ring (35); The buckle ring (35) is circumferentially arranged on the outer edges of the first pressing plate (31) and the second pressing plate (32); the cross section of the buckle ring (35) along its axial direction is a U-shaped groove; the first pressing plate (31) and the second pressing plate (32) are connected to each other. The second pressing plates (32) are arranged in the U-shaped grooves, the second pressing plates (32) are fixedly connected to the buckle ring (35), and the first pressing plates (31) rotate relative to the U-shaped grooves.

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