A sewage impurity filter

Abstract

The present invention discloses a sewage impurity filter, which relates to the field of filters and comprises an upper sleeve and a lower sleeve connected and fixed by bolts. The inner wall of the upper sleeve is provided with a docking cover. The outer part of the upper sleeve is connected to a water inlet pipe connected to the docking cover. The inner wall of the lower sleeve is provided with a receiving frame. The middle part of the receiving frame is provided with a receiving groove. A drain box is inserted into the receiving groove. The bottom of the outer part of the lower sleeve is connected to a drain pipe. The interior of the drain box is expanded to accommodate three layers of filter net bags. The top of the filter net bag is provided with a wiring groove. The sewage impurity filter is provided with multiple layers of filter net bags inside the drain box. When the inner filter net bag reaches saturation, it is closed and twisted and compressed so that the unused outer filter net bag can be replaced for filtering. Therefore, there is no need for manual frequent replacement of the filter element inside the filter, which significantly increases the sustainable working time of the filter.

Description

Technical Field

[0001] The invention relates to filter technology, in particular to a sewage impurity filter. Background Art

[0002] With the rapid development of industrialization and urbanization, the amount of sewage discharged is increasing. The solid particles, suspended matter, colloids and other impurities contained in the sewage have seriously affected the subsequent treatment and reuse of the sewage. At present, in the sewage treatment process, a grid filter is used to intercept and filter out larger particles of impurities. For tiny particles and colloids, they are filtered through a more sophisticated filter for secondary filtration, such as a membrane filter. However, in actual application, although the secondary filtration filter has high filtration accuracy, it is easy to clog and requires frequent replacement of the filter element. The operating cost is high, and the backwash process is complicated, time-consuming and water-consuming. Therefore, there is an urgent need to develop a new type of sewage impurity filter to solve the problems existing in the existing technology. Summary of the Invention

[0003] The object of the present invention is to provide a sewage impurity filter to solve the above-mentioned deficiencies in the prior art.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a sewage impurity filter, comprising an upper sleeve and a lower sleeve connected and fixed by bolts, the inner wall of the upper sleeve being provided with a docking cover, the outer portion of the upper sleeve being connected to a water inlet pipe connected to the docking cover, the inner wall of the lower sleeve being provided with a receiving frame, the middle portion of the receiving frame being provided with a receiving groove, the interior of the receiving groove being embedded with a drain box, and the outer bottom of the lower sleeve being connected to a drain pipe;

[0005] The interior of the leakage box is expanded to accommodate three layers of filter net bags, the top of the filter net bags is provided with a wiring groove, a drawstring passes through the interior of the wiring groove, and the interior of the docking cover is provided with a progressive bundling unit, which is used to sequentially bundling the openings of the three filter net bags from the inside to the outside and twisting and compressing the bundled filter net bags.

[0006] Furthermore, the inner wall of the docking cover is rotatably connected to a rotating shaft, a winding wheel is provided at the bottom of the rotating shaft, a motor for driving the rotating shaft to rotate is installed on the outside of the docking cover, and three groups of auxiliary ropes are wound on the outside of the winding wheel. The lengths of the three groups of auxiliary ropes increase successively, and the shortest auxiliary rope is connected to the tie rope located on the innermost filter net bag, and the longest auxiliary rope is connected to the tie rope located on the outermost filter net bag.

[0007] Furthermore, a horizontal plate is installed on the inner wall of the docking cover, and elastic clips corresponding to three groups of auxiliary ropes are installed on the bottom of the horizontal plate. The bottom end of the elastic clip is opened, and the width of the bottom end opening is smaller than the rope diameter of the auxiliary rope. The three groups of auxiliary ropes pass through the corresponding elastic clips and are connected to the corresponding binding ropes.

[0008] Furthermore, a through groove is provided at the bottom of the leakage box, a pressure plate is provided at the bottom of the innermost filter net bag, a puncture rod is provided at the bottom of the pressure plate, the bottom end of the puncture rod is pointed, and the bottom end of the puncture rod passes through all the filter net bags and the through groove in turn, the bottom of the puncture rod is threadedly connected to a locking nut located outside the leakage box, the outer diameter of the locking nut is larger than the diameter of the through groove, and the bottom of the outer side surface of the winding wheel is in a circular ring shape with a plurality of blocks equidistantly provided.

[0009] Furthermore, a docking ring portion is provided on the top of the leakage box, and an adapter portion adapted to the docking ring portion is provided on the bottom of the docking cover. The bottom of the adapter portion is in a circular ring shape and is equidistantly provided with a number of positioning short columns. The bottom surface of the docking ring portion is provided with a positioning column groove adapted to the positioning short columns. The bottom of the leakage box is in a circular ring shape and is equidistantly provided with a number of limiting grooves. The inner wall of the receiving groove is provided with a limiting protrusion adapted to the limiting groove.

[0010] Furthermore, the bottom of the docking cover is provided with multiple groups of accommodating grooves, the number of the accommodating grooves in the same group is three, and they are equidistantly arranged along the diameter direction of the docking cover, the inner side surface of the accommodating groove is slidably connected with a pressure block, and a pressure spring is fixedly connected between the top of the pressure block and the inner wall of the accommodating groove, and the elastic coefficient of the pressure spring in each group decreases from the inside to the outside.

[0011] Furthermore, the widths of the three filter net bags spread out on the surface of the docking ring portion increase from the inside to the outside, the positions of the three pressing blocks in each group correspond to the three filter net bags respectively, and the three pressing blocks in each group correspond to the parts of the three filter net bags spread out on the surface of the docking ring portion from the inside to the outside.

[0012] Furthermore, a shielding plate is fixedly installed on the outside of the rotating shaft, and the shielding plate is arranged above the winding wheel. The diameter of the shielding plate is larger than the diameter of the winding wheel.

[0013] Compared with the prior art, the sewage impurity filter provided by the present invention has the following beneficial effects:

[0014] 1. The sewage impurity filter is constructed by arranging multiple layers of filter mesh bags inside the leakage box. When the inner filter mesh bag reaches saturation, it is closed and twisted and compressed so that the unused outer filter mesh bag can be replaced for filtering. This eliminates the need for frequent manual replacement of the filter element inside the filter, significantly increasing the sustainable working time of the filter.

[0015] 2. The sewage impurity filter can apply increasing pressure to the multiple groups of filter net bags from the inside to the outside in sequence during their operation through the cooperation between multiple groups of pressure blocks and multiple pressure springs with successively changing elastic coefficients, thereby ensuring that the unused filter net bags will not be affected during the contraction and compression of the inner filter net bags, so that the unused filter net bags can remain stable during subsequent use.

[0016] 3. The sewage impurity filter, through the mutual cooperation between the puncture rod, the pressure plate and the locking nut, can keep the bottom of the filter net bag in a stable and fixed state during the twisting process driven by the winding wheel, so that the twisting and compression process of the filter net bag after use can be carried out smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the overall internal structure provided by an embodiment of the present invention;

[0020] Figure 3 The embodiment of the present invention provides Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 The embodiment of the present invention provides Figure 2 The enlarged structural diagram at B in the middle;

[0022] Figure 5 A schematic diagram of the lower sleeve structure provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the upper sleeve structure provided in an embodiment of the present invention;

[0024] Figure 7 The embodiment of the present invention provides Figure 6 The enlarged structural diagram at C in the middle;

[0025] Figure 8 A schematic diagram of the assembly structure of the drain box and the multi-layer filter net bag provided in an embodiment of the present invention;

[0026] Figure 9 A schematic diagram of the leakage box structure provided by an embodiment of the present invention;

[0027] Figure 10 A schematic diagram of a partial cross-sectional structure of an upper sleeve and a lower sleeve provided in an embodiment of the present invention;

[0028] Figure 11 The embodiment of the present invention provides Figure 10 Enlarged structural diagram at point D in the middle.

[0029] Description of reference numerals:

[0030] 1. Upper sleeve; 11. Docking cover; 12. Water inlet pipe; 2. Lower sleeve; 21. Receiver frame; 22. Receiver slot; 23. Leak box; 24. Drain pipe; 3. Filter net bag; 31. Wire routing slot; 32. Tie rope; 4. Rotating shaft; 41. Winding wheel; 42. Auxiliary rope; 43. Cross plate; 44. Elastic clip; 45. Through slot; 46. Pressing plate; 47. Piercing rod; 48. Locking nut; 49. Stopper; 5. Docking ring; 51. Adapter; 52. Positioning short column; 53. Positioning column slot; 54. Limiting slot; 55. Limiting protrusion; 56. Accommodating slot; 57. Pressing block; 58. Pressure spring; 6. Shielding plate. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1:

[0033] See also Figures 1-11 A sewage impurity filter includes an upper sleeve 1 and a lower sleeve 2 connected and fixed by bolts. The inner wall of the upper sleeve 1 is provided with a docking cover 11. The outer portion of the upper sleeve 1 is connected to a water inlet pipe 12 connected to the docking cover 11. The inner wall of the lower sleeve 2 is provided with a receiving frame 21. The middle portion of the receiving frame 21 is provided with a receiving groove 22. A drain box 23 is inserted into the receiving groove 22. The bottom of the outer portion of the lower sleeve 2 is connected to a drain pipe 24.

[0034] The interior of the leakage box 23 is expanded to accommodate three layers of filter net bags 3. A wiring groove 31 is provided at the top of the filter net bags 3. A drawstring 32 passes through the wiring groove 31. A progressive bundling unit is provided inside the docking cover 11, which is used to sequentially bundling the openings of the three filter net bags 3 from the inside to the outside and to twist and compress the bundled filter net bags 3.

[0035] It should be noted that the innermost side mentioned in this application refers to the side close to the center of the leakage box 23, and the outermost side is the side in direct contact with the inner wall of the leakage box 23. From inside to outside also refers to the direction from the center of the leakage box 23 to the inner wall of the leakage box 23.

[0036] In this embodiment, the inner wall of the docking cover 11 is rotatably connected to the rotating shaft 4, and a winding wheel 41 is provided at the bottom of the rotating shaft 4. A motor for driving the rotating shaft 4 to rotate is installed on the outside of the docking cover 11, and three groups of auxiliary ropes 42 are wound on the outside of the winding wheel 41. The lengths of the three groups of auxiliary ropes 42 increase successively, and the shortest auxiliary rope 42 is connected to the tie rope 32 located on the innermost filter net bag 3, and the longest auxiliary rope 42 is connected to the tie rope 32 located on the outermost filter net bag 3. A horizontal plate 43 is installed on the inner wall of the docking cover 11, and elastic clips 44 corresponding to the three groups of auxiliary ropes 42 are installed at the bottom of the horizontal plate 43. The bottom end of the elastic clip 44 is opened, and the width of the bottom end opening is smaller than the rope diameter of the auxiliary rope 42. The three groups of auxiliary ropes 42 pass through the corresponding elastic clips 44 and are connected with the corresponding tie ropes 32.

[0037] It should be noted that after the three groups of auxiliary ropes 42 are connected to the three groups of tie ropes 32, the innermost auxiliary rope 42 and the innermost tie rope 32 are in a relatively straight state. When the reel 41 rotates, the auxiliary rope 42 can be directly tightened, so that the tie rope 32 connected thereto can be pulled, and as the tie rope 32 is reeled in, the opening of the filter net bag 3 gradually shrinks. During the above process, the other two groups of auxiliary ropes 42 are synchronously in a reeled-in state, and the remaining space of the remaining two auxiliary ropes 42 can meet the torsional compression of the innermost filter net bag 3. In addition, the remaining space of the auxiliary rope 42 connected to the outermost filter net bag 3 can also meet the torsional compression of the adjacent inner filter net bag 3.

[0038] It should be further explained that the number of filter net bags 3 provided in this application is only one of the options, and the actual number of layers can be set according to the actual application scenario.

[0039] In this embodiment, a through groove 45 is provided at the bottom of the leakage box 23, a pressure plate 46 is provided at the bottom of the innermost filter net bag 3, and a puncture rod 47 is provided at the bottom of the pressure plate 46. The bottom end of the puncture rod 47 is sharp, and the bottom end of the puncture rod 47 passes through all the filter net bags 3 and the through groove 45 in turn. The bottom of the puncture rod 47 is threadedly connected to a locking nut 48 located outside the leakage box 23, and the outer diameter of the locking nut 48 is greater than the diameter of the through groove 45.

[0040] It should be noted that a thread is provided on the outer side of the puncture rod 47 for threaded connection with the locking nut 48 .

[0041] In this embodiment, a plurality of blocks 49 are equidistantly arranged in a circular ring shape at the bottom of the outer side of the winding wheel 41. Through the arrangement of the plurality of blocks 49, after the auxiliary rope 42 and the binding rope 32 are wound up, the blocks 49 can drive the filter net bag 3 fixed at the bottom to twist and compress as the winding wheel 41 rotates, so that the space occupied by it is gradually reduced, and the flow of sewage will not be hindered.

[0042] It should be added that there are multiple ways to control the replacement of the filter net bag 3 by the reel-up wheel 41:

[0043] First, the saturation time of the filter net 3 during the sewage treatment process is determined through experiments, and then the operation of the motor is controlled by the cooperation of the controller and the timer to realize the replacement of the filter net 3;

[0044] Secondly, by setting a flow meter at the drain pipe 24, it is possible to monitor the drainage status at the drain pipe 24 in real time, and then control the operation of the motor through the controller to achieve the replacement of the filter net bag 3.

[0045] During the working process, when the filter net bag 3 reaches the filtration saturation state, the motor drives the rotating shaft 4 to rotate, so that the reel 41 reels the auxiliary rope 42, so that the auxiliary rope 42 pulls the binding rope 32 on the innermost filter net bag 3 to be reeled. In this process, the binding rope 32 will tighten the opening of the innermost filter net bag 3, and when the binding rope 32 and the auxiliary rope 42 are both withdrawn from the elastic clip 44, they will naturally droop and fall between the adjacent blocks 49 on the side of the reel wheel 41. At this time, the continued rotation of the reel wheel 41 can no longer reel the binding rope 32. Since the pressure plate 46 can fix the bottom of the filter net bag 3, the filter net bag 3 can be continuously twisted and compressed under the push of the block 49. When the reel wheel 41 rotates a certain number of circles, it no longer reels. When the next layer of filter net bag 3 needs to be tightened, the above process is repeated.

[0046] Example 2:

[0047] See also Figure 5-Figure 6 、 Figures 8-11 This embodiment provides a technical solution based on the above embodiment: a docking ring portion 5 is provided on the top of the leakage box 23, and an adapter portion 51 adapted to the docking ring portion 5 is provided on the bottom of the docking cover 11. The bottom of the adapter portion 51 is annular and equidistantly provided with a plurality of positioning short columns 52. The bottom surface of the docking ring portion 5 is provided with a positioning column groove 53 adapted to the positioning short columns 52. The bottom of the leakage box 23 is annular and equidistantly provided with a plurality of limiting grooves 54. The inner wall of the receiving groove 22 is provided with a limiting protrusion 55 adapted to the limiting groove 54.

[0048] It should be noted that, through the mutual cooperation between the limiting groove 54 and the limiting protrusion 55, the connection stability between the leakage box 23 and the receiving frame 21 is better, and through the mutual cooperation between the positioning short column 52 and the positioning column groove 53, the connection stability between the docking cover 11 and the leakage box 23 is better, so that the leakage box 23 is not easy to rotate during operation, thereby ensuring the smooth contraction and torsional compression of the filter net bag 3.

[0049] In this embodiment, multiple groups of accommodating grooves 56 are opened at the bottom of the docking cover 11. The number of accommodating grooves 56 in the same group is three, and they are equidistantly arranged along the diameter direction of the docking cover 11. The inner side surface of the accommodating groove 56 is slidably connected with a pressure block 57, and a pressure spring 58 is fixedly connected between the top of the pressure block 57 and the inner wall of the accommodating groove 56. The elastic coefficient of the pressure spring 58 in each group decreases from the inside to the outside.

[0050] In addition, the width of the three filter net bags 3 spread flat on the surface of the docking ring 5 increases from the inside to the outside. The positions of the three pressure blocks 57 in each group correspond to the three filter net bags 3 respectively, and the three pressure blocks 57 in each group correspond to the parts of the three filter net bags 3 spread flat on the surface of the docking ring 5 from the inside to the outside, so that the pressure values applied to the filter net bags 3 gradually increase from the inside to the outside, thereby ensuring that the movement of the inner filter net bag 3 will not affect the working stability of the outer filter net bag 3.

[0051] Example 3:

[0052] See also Figure 2 This embodiment provides a technical solution based on the above embodiment: a baffle plate 6 is fixedly installed on the outside of the rotating shaft 4, and the baffle plate 6 is arranged above the winding wheel 41. The diameter of the baffle plate 6 is larger than the diameter of the winding wheel 41, so that the baffle plate 6 can divert the sewage flowing from top to bottom, so that it will not directly impact the winding wheel 41, thereby avoiding the sewage flow from hindering the contraction process of the filter net bag 3.

[0053] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A sewage impurity filter, comprising an upper sleeve (1) and a lower sleeve (2) connected and fixed by bolts, characterized in that: The inner wall of the upper sleeve (1) is provided with a docking cover (11), the outer portion of the upper sleeve (1) is connected to a water inlet pipe (12) in communication with the docking cover (11), the inner wall of the lower sleeve (2) is provided with a receiving frame (21), the middle portion of the receiving frame (21) is provided with a receiving groove (22), a drain box (23) is inserted into the receiving groove (22), and the outer bottom portion of the lower sleeve (2) is connected to a drain pipe (24); The interior of the leakage box (23) is expanded to accommodate three layers of filter net bags (3), the top of the filter net bags (3) is provided with a wiring groove (31), the interior of the wiring groove (31) passes through a tie rope (32), and the interior of the docking cover (11) is provided with a progressive bundling unit, which is used to sequentially bundling the openings of the three filter net bags (3) from the inside to the outside and twisting and compressing the bundling filter net bags (3); The inner wall of the docking cover (11) is rotatably connected to a rotating shaft (4), a reel (41) is provided at the bottom of the rotating shaft (4), a motor for driving the rotating shaft (4) to rotate is installed on the outside of the docking cover (11), and three groups of auxiliary ropes (42) are reeled on the outside of the reel (41), the lengths of the three groups of auxiliary ropes (42) increasing in sequence, and the shortest auxiliary rope (42) is connected to the tie rope (32) located on the innermost filter net bag (3), and the longest auxiliary rope (42) is connected to the tie rope (32) located on the outermost filter net bag (3); The inner wall of the docking cover (11) is provided with a transverse plate (43), and the bottom of the transverse plate (43) is provided with elastic clips (44) corresponding to the three groups of auxiliary ropes (42), the bottom end of the elastic clip (44) is provided with an opening, and the width of the bottom end opening is smaller than the rope diameter of the auxiliary rope (42), and the three groups of auxiliary ropes (42) are connected to the corresponding ropes (32) by passing through the corresponding elastic clips (44); The bottom of the leakage box (23) is provided with a through slot (45), the bottom of the innermost filter net bag (3) is provided with a pressure plate (46), the bottom of the pressure plate (46) is provided with a puncture rod (47), the bottom end of the puncture rod (47) is sharp, and the bottom end of the puncture rod (47) passes through all the filter net bags (3) and the through slot (45) in sequence, the bottom of the puncture rod (47) is threadedly connected to a locking nut (48) located outside the leakage box (23), the outer diameter of the locking nut (48) is larger than the diameter of the through slot (45), and the bottom of the outer side surface of the winding wheel (41) is annular and equidistantly provided with a plurality of blocks (49).

2. A sewage impurity filter according to claim 1, characterized in that: The top of the leakage box (23) is provided with a docking ring portion (5), the bottom of the docking cover (11) is provided with an adapter portion (51) adapted to the docking ring portion (5), the bottom of the adapter portion (51) is provided with a plurality of positioning short columns (52) equidistantly arranged in a circular ring shape, the bottom surface of the docking ring portion (5) is provided with a positioning column groove (53) adapted to the positioning short columns (52), the bottom of the leakage box (23) is provided with a plurality of limiting grooves (54) equidistantly arranged in a circular ring shape, and the inner wall of the receiving groove (22) is provided with a limiting protrusion (55) adapted to the limiting groove (54).

3. A sewage impurity filter according to claim 2, characterized in that: The bottom of the docking cover (11) is provided with a plurality of groups of accommodating grooves (56), the number of the accommodating grooves (56) in the same group is three, and the accommodating grooves (56) are equidistantly arranged along the diameter direction of the docking cover (11), the inner side surface of the accommodating groove (56) is slidably connected with a pressure block (57), and a pressure spring (58) is fixedly connected between the top of the pressure block (57) and the inner wall of the accommodating groove (56), and the elastic coefficient of the pressure spring (58) in each group decreases from the inside to the outside.

4. A sewage impurity filter according to claim 3, characterized in that: The widths of the three filter net bags (3) spread out on the surface of the docking ring portion (5) increase sequentially from the inside to the outside, the positions of the three pressing blocks (57) in each group correspond to the three filter net bags (3), and the three pressing blocks (57) in each group correspond sequentially from the inside to the outside to the portions of the three filter net bags (3) spread out on the surface of the docking ring portion (5).

5. A sewage impurity filter according to claim 4, characterized in that: A shielding plate (6) is fixedly mounted on the outside of the rotating shaft (4), the shielding plate (6) is arranged above the winding wheel (41), and the diameter of the shielding plate (6) is larger than the diameter of the winding wheel (41).

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