Sewage impurity filter

Abstract

The invention discloses a sewage impurity filter, and relates to the field of filters, the sewage impurity filter comprises an upper sleeve and a lower sleeve which are connected and fixed through a bolt, the inner wall of the upper sleeve is provided with a butt joint cover, the outer part of the upper sleeve is connected with a water inlet pipe communicated with the butt joint cover, and the inner wall of the lower sleeve is provided with a bearing frame; a bearing groove is formed in the middle of the bearing frame, a leakage box is embedded and inserted into the bearing groove, and the bottom of the outer portion of the lower sleeve communicates with a drainage pipe. Three layers of filtering net bags are placed in the leakage box in an opening mode, and a wiring groove is formed in the top end of each filtering net bag. According to the sewage impurity filter, multiple layers of filter net bags are arranged in the leakage box in a sleeving manner, and when the filter net bag on the inner layer is saturated, the filter net bag on the inner layer is closed up and is twisted and compressed, so that the unused filter net bag on the outer layer is replaced for filtering work, and a filter element in the filter does not need to be manually and frequently replaced; and the sustainable working time of the filter is obviously prolonged.

Description

Technical Field

[0001] The present invention relates to filter technology, and particularly to a sewage impurity filter. Background Art

[0002] With the rapid development of industrialization and urbanization, the sewage discharge is increasing day by day. Impurities such as solid particles, suspended substances, and colloidal substances contained in the sewage seriously affect the subsequent treatment and reuse of sewage. Currently, in the sewage treatment process, grid filters are usually used to intercept and filter out larger particle impurities. For tiny particles and colloidal substances, more refined filters are usually used for secondary filtration, such as membrane filters, etc. However, in the actual application process, although the secondary filtration filter has a high filtration accuracy, it is prone to clogging, requires frequent replacement of the filter element, has a high operation cost, and the backwashing process is complex, 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 prior art. Summary of the Invention

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

[0004] To achieve the above purpose, the present invention provides the following technical solution: A sewage impurity filter includes an upper sleeve and a lower sleeve that are connected and fixed by bolts. The inner wall of the upper sleeve is provided with a docking cover. The outside of the upper sleeve is connected with a water inlet pipe that communicates with the docking cover. The inner wall of the lower sleeve is provided with a receiving frame. The middle of the receiving frame is provided with a receiving groove. A leakage box is inserted into the receiving groove. The bottom of the outside of the lower sleeve is communicated with a drain pipe; Three filter mesh bags are placed in the leakage box in an expanded manner. A wire groove is provided at the top of the filter mesh bag. A binding rope passes through the wire groove. A progressive convergence unit is arranged inside the docking cover, which is used to sequentially converge the openings of the three filter mesh bags from the inside to the outside and twist and compress the converged filter mesh bags.

[0005] Further, a rotating shaft is rotatably connected to the inner wall of the docking cover. A winding wheel is arranged at the bottom of the rotating shaft. A motor for driving the rotation of the rotating shaft is installed outside the docking cover. Three groups of auxiliary ropes are wound around the outside of the winding wheel. The length values of the three groups of auxiliary ropes increase in sequence. The shortest auxiliary rope is connected to the binding rope on the innermost filter mesh bag, and the longest auxiliary rope is connected to the binding rope on the outermost filter mesh bag.

[0006] Furthermore, a transverse plate is installed on the inner wall of the docking cover, and elastic clips corresponding to the three groups of auxiliary ropes are installed on the bottom of the transverse plate. The bottom ends of the elastic clips are arranged at intervals, and the interval size value is smaller than the rope diameter value of the auxiliary rope. The three groups of auxiliary ropes pass through the corresponding elastic clips and are connected to the corresponding binding ropes.

[0007] 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 sharply set, and the bottom end of the puncture rod passes through all the filter net bags and the through groove in sequence, 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 arranged.

[0008] Furthermore, a docking ring portion is provided on the top of the leakage box, and an adapter portion matched with 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 has a plurality of positioning short columns equidistantly provided thereon. A positioning column groove matched with the positioning short columns is provided on the bottom surface of the docking ring portion. The bottom of the leakage box is in a circular ring shape and has a plurality of limiting grooves equidistantly provided thereon. The inner wall of the receiving groove is provided with a limiting protrusion matched with the limiting groove.

[0009] Furthermore, a plurality of groups of receiving grooves are provided at the bottom of the docking cover, the number of the receiving grooves in the same group is three, and the receiving grooves are equidistantly arranged along the diameter direction of the docking cover, the inner side surface of the receiving 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 receiving groove, and the elastic coefficient of the pressure spring in each group decreases from the inside to the outside.

[0010] Furthermore, the width of the three filter net bags spread out on the surface of the docking ring portion increases 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.

[0011] 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.

[0012] Compared with the prior art, the sewage impurity filter provided by the present invention has the following beneficial effects: 1. The sewage impurity filter is constructed by arranging multiple layers of filter nets inside the leakage box. When the inner filter net is saturated, the inner filter net is closed and twisted and compressed so that the unused outer filter net can be replaced for filtering. This eliminates the need for frequent manual replacement of the filter element inside the filter, which significantly increases the sustainable working time of the filter.

[0013] 2. The sewage impurity filter can apply gradually increasing pressures from the inside out to multiple filter mesh pockets during their operation through the cooperation of multiple pressing blocks and multiple pressing springs with sequentially varying elastic coefficients, so as to ensure that the inner filter mesh pockets will not affect the unused filter mesh pockets during the process of being constricted and compressed, enabling the unused filter mesh pockets to maintain a stable state during subsequent use.

[0014] 3. The sewage impurity filter, through the cooperation of the puncture rod, the pressing plate, and the locking nut, enables the bottom of the filter mesh pocket to maintain a stable fixed state during the process of being twisted driven by the winding wheel, so that the process of twisting and compressing the used filter mesh pocket can proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure provided by the embodiment of the present invention; Figure 2 It is a schematic diagram of the overall internal structure provided by the embodiment of the present invention; Figure 3 It is provided by the embodiment of the present invention Figure 2 The enlarged schematic diagram of part A; Figure 4 It is provided by the embodiment of the present invention Figure 2 The enlarged schematic diagram of part B; Figure 5 It is a schematic diagram of the lower sleeve structure provided by the embodiment of the present invention; Figure 6 It is a schematic diagram of the upper sleeve structure provided by the embodiment of the present invention; Figure 7 It is provided by the embodiment of the present invention Figure 6 The enlarged schematic diagram of part C; Figure 8 It is a schematic diagram of the assembly structure of the leakage box and the multi-layer filter mesh pockets provided by the embodiment of the present invention; Figure 9 It is a schematic diagram of the leakage box structure provided by the embodiment of the present invention; Figure 10 It is a partial sectional view structure schematic diagram of the upper sleeve and the lower sleeve provided by the embodiment of the present invention; Figure 11 It is provided by the embodiment of the present invention Figure 10 The enlarged schematic diagram of part D.

[0017] Description of reference numerals: 1. Upper sleeve; 11. Docking cover; 12. Water inlet pipe; 2. Lower sleeve; 21. Bearing frame; 22. Bearing groove; 23. Leakage box; 24. Drain pipe; 3. Filter mesh pocket; 31. Wiring groove; 32. Binding rope; 4. Rotating shaft; 41. Winding wheel; 42. Auxiliary rope; 43. Cross plate; 44. Elastic clip; 45. Through groove; 46. Pressing plate; 47. Piercing rod; 48. Locking nut; 49. Block; 5. Docking ring part; 51. Adaptation part; 52. Positioning short column; 53. Positioning column groove; 54. Limiting groove; 55. Limiting convex block; 56. Accommodation groove; 57. Pressing block; 58. Pressing spring; 6. Shading plate. Detailed implementation manners

[0018] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Embodiment 1: Please refer to Figures 1 - 11 , a sewage impurity filter, including an upper sleeve 1 and a lower sleeve 2 that are fixedly connected by bolts. The inner wall of the upper sleeve 1 is provided with a docking cover 11, and the outside of the upper sleeve 1 is connected with a water inlet pipe 12 that communicates with the docking cover 11. The inner wall of the lower sleeve 2 is provided with a bearing frame 21, the middle of the bearing frame 21 is provided with a bearing groove 22, a leakage box 23 is inserted in the bearing groove 22, and the bottom of the outside of the lower sleeve 2 is communicated with a drain pipe 24; Three layers of filter mesh pockets 3 are placed in the leakage box 23 in an expanded manner. The top of the filter mesh pocket 3 is provided with a wiring groove 31, and a binding rope 32 passes through the wiring groove 31. A progressive convergence unit is arranged inside the docking cover 11, which is used to sequentially converge the openings of the three filter mesh pockets 3 from the inside to the outside and twist and compress the converged filter mesh pockets 3.

[0020] It should be noted that in this application, the innermost side refers to the side close to the center of the leakage box 23, and the outermost side refers to the side in direct contact with the inner wall of the leakage box 23. From the inside to the outside also refers to the direction from the center of the leakage box 23 to the inner wall of the leakage box 23.

[0021] In this embodiment, a rotating shaft 4 is rotatably connected to the inner wall of the docking cover 11. A winding wheel 41 is arranged at the bottom of the rotating shaft 4. A motor for driving the rotation of the rotating shaft 4 is installed outside the docking cover 11. Three groups of auxiliary ropes 42 are wound around the outside of the winding wheel 41. The length values of the three groups of auxiliary ropes 42 increase in sequence. The shortest auxiliary rope 42 is connected to the cord 32 on the innermost filter net pocket 3, and the longest auxiliary rope 42 is connected to the cord 32 on the outermost filter net pocket 3. A cross plate 43 is installed on the inner wall of the docking cover 11. Elastic clips 44 corresponding to the three groups of auxiliary ropes 42 are installed at the bottom of the cross plate 43. The bottom ends of the elastic clips 44 are arranged at intervals, and the interval dimension value is smaller than the rope diameter value of the auxiliary rope 42. The three groups of auxiliary ropes 42 respectively pass through the corresponding elastic clips 44 and are connected to the corresponding cords 32.

[0022] It should be noted that after the three groups of auxiliary ropes 42 are connected to the three groups of cords 32, the innermost auxiliary rope 42 and the innermost cord 32 are in a relatively taut state. When the winding wheel 41 rotates, the auxiliary rope 42 can be directly tightened, so as to pull the cord 32 connected thereto. And as the cord 32 is wound, the opening of the filter net pocket 3 gradually contracts. During the above process, the other two groups of auxiliary ropes 42 are synchronously in a wound state, and the remaining lengths of the other two auxiliary ropes 42 can meet the torsional compression of the innermost filter net pocket 3. In addition, the remaining length of the auxiliary rope 42 connected to the outermost filter net pocket 3 can also meet the torsional compression of the adjacent inner filter net pocket 3. It should be further noted that the number of the filter net pockets 3 set in this application is one of the schemes, and the actual number of layers can be set according to the actual application scenario.

[0023] In this embodiment, a through groove 45 is formed at the bottom of the leakage box 23. A pressing plate 46 is arranged at the bottom of the innermost filter net pocket 3. A puncture rod 47 is arranged at the bottom of the pressing plate 46. The bottom end of the puncture rod 47 is sharp, and the bottom end of the puncture rod 47 sequentially passes through all the filter net pockets 3 and the through groove 45. A locking nut 48 located outside the leakage box 23 is threadedly connected to the bottom of the puncture rod 47. The outer diameter value of the locking nut 48 is larger than the diameter value of the through groove 45.

[0024] It should be noted that threads are arranged on the outer side of the puncture rod 47 for threaded connection with the locking nut 48.

[0025] In this embodiment, a plurality of stoppers 49 are arranged at equal intervals in a circular ring shape at the bottom of the outer side of the winding wheel 41. Through the arrangement of the plurality of stoppers 49, after the auxiliary ropes 42 and the cords 32 are wound up, when the stoppers 49 rotate with the winding wheel 41, they can drive the filter net pocket 3 fixed at the bottom to be torsionally compressed, so that the occupied space is gradually reduced and will not hinder the flow of sewage.

[0026] It should be added that there are various ways to control the replacement of the filter net bag 3 by the take-up wheel 41: First, determine the saturation time of the filter net bag 3 during the sewage treatment process through experiments, and then control the operation of the motor through the cooperation of the controller and the timer to realize the replacement of the filter net bag 3; Second, set a flow meter at the drain pipe 24 to enable real-time monitoring of the drainage condition at the drain pipe 24, and then control the operation of the motor through the cooperation of the controller to realize the replacement of the filter net bag 3.

[0027] 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 take-up wheel 41 takes up the auxiliary rope 42, and the auxiliary rope 42 pulls the binding rope 32 on the innermost filter net bag 3 to be taken up. During this process, the binding rope 32 will constrict the opening of the innermost filter net bag 3. And when both the binding rope 32 and the auxiliary rope 42 exit from the elastic clip 44, it will droop naturally and fall into the adjacent stoppers 49 on the side of the take-up wheel 41. At this time, the continuous rotation of the take-up wheel 41 can no longer take up the binding rope 32. Since the pressing plate 46 can fix the bottom of the filter net bag 3, under the push of the stopper 49, the filter net bag 3 can be continuously twisted and compressed. When the take-up wheel 41 rotates a certain number of turns, it stops the take-up work. When it is necessary to constrict the next layer of the filter net bag 3, the above process is repeated.

[0028] Embodiment 2: Please refer to Figures 5 - 6 、 Figures 8 - 11 In this embodiment, on the basis of the above embodiment, a technical solution is provided: a docking ring portion 5 is provided at the top of the leakage box 23, an adaptation portion 51 adapted to the docking ring portion 5 is provided at the bottom of the docking cover 11, a plurality of positioning short columns 52 are equidistantly arranged in a circular ring shape at the bottom of the adaptation portion 51, a positioning column groove 53 adapted to the positioning short columns 52 is opened on the bottom surface of the docking ring portion 5, and a plurality of limiting grooves 54 are equidistantly opened in a circular ring shape at the bottom of the leakage box 23, and a limiting convex block 55 adapted to the limiting grooves 54 is provided on the inner wall of the receiving groove 22.

[0029] It should be noted that through the mutual cooperation between the limiting grooves 54 and the limiting convex blocks 55, the connection stability between the leakage box 23 and the receiving frame 21 is relatively good. Through the mutual cooperation between the positioning short columns 52 and the positioning column grooves 53, the connection stability between the docking cover 11 and the leakage box 23 is relatively good, so that the leakage box 23 is not prone to rotation during the working process, thereby ensuring the smooth progress of the constriction and twisting compression work of the filter net bag 3.

[0030] In this embodiment, a plurality of sets of receiving grooves 56 are formed at the bottom of the docking cover 11. The number of receiving grooves 56 in the same set is three, and they are equidistantly arranged along the diameter direction of the docking cover 11. A pressing block 57 is slidably connected to the inner side surface of the receiving groove 56. A pressing spring 58 is fixedly connected between the top of the pressing block 57 and the inner wall of the receiving groove 56. The elastic coefficient of the pressing spring 58 in each set decreases sequentially from the inside to the outside.

[0031] Moreover, the width values of the three filter mesh bags 3 spread flat 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 set correspond to the three filter mesh bags 3 respectively, and the parts of the three pressing blocks 57 in each set corresponding to the three filter mesh bags 3 spread flat on the surface of the docking ring portion 5 correspond sequentially from the inside to the outside, so that the pressure values received by the filter mesh bags 3 gradually increase from the inside to the outside, thereby ensuring that the movement of the inner filter mesh bag 3 will not affect the working stability of the outer filter mesh bag 3.

[0032] Embodiment 3: Please refer to Figure 2 , on the basis of the above embodiment, this embodiment provides a technical solution: a shielding plate 6 is fixedly installed outside the rotating shaft 4. The shielding plate 6 is arranged above the winding wheel 41, and the diameter value of the shielding plate 6 is greater than the diameter value of the winding wheel 41, so that the shielding plate 6 can guide the sewage flowing from top to bottom, so that it will not directly impact with the winding wheel 41, thereby avoiding the sewage flow from hindering the winding process of the filter mesh bag 3.

[0033] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

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), and a water inlet pipe (12) communicating with the docking cover (11) is connected to the outside of the upper sleeve (1). The inner wall of the lower sleeve (2) is provided with a receiving frame (21), a receiving groove (22) is arranged in the middle of the receiving frame (21), a leakage box (23) is inserted into the receiving groove (22), and a drain pipe (24) is communicated with the bottom of the outside of the lower sleeve (2). Three layers of filter mesh bags (3) are placed in the leakage box (23) in an unfolded manner. A wire groove (31) is arranged at the top of the filter mesh bag (3), and a binding rope (32) passes through the wire groove (31). A progressive converging unit is arranged inside the docking cover (11) for successively converging the openings of the three filter mesh bags (3) from the inside to the outside and torsionally compressing the converged filter mesh bags (3).

2. The sewage impurity filter according to claim 1, characterized in that, A rotating shaft (4) is rotatably connected to the inner wall of the docking cover (11). A winding wheel (41) is arranged at the bottom of the rotating shaft (4). A motor for driving the rotating shaft (4) to rotate is installed outside the docking cover (11). Three groups of auxiliary ropes (42) are wound outside the winding wheel (41). The length values of the three groups of auxiliary ropes (42) increase in sequence, and the shortest auxiliary rope (42) is connected to the binding rope (32) on the innermost filter mesh bag (3), and the longest auxiliary rope (42) is connected to the binding rope (32) on the outermost filter mesh bag (3).

3. The sewage impurity filter according to claim 2, characterized in that, A cross plate (43) is installed on the inner wall of the docking cover (11). Elastic clips (44) corresponding to the three groups of auxiliary ropes (42) are installed at the bottom of the cross plate (43). The bottom ends of the elastic clips (44) are arranged at intervals, and the interval dimension value is smaller than the rope diameter value of the auxiliary rope (42). The three groups of auxiliary ropes (42) respectively pass through the corresponding elastic clips (44) and are connected to the corresponding binding ropes (32).

4. A sewage impurity filter according to claim 3, characterized in that, A through groove (45) is formed at the bottom of the leakage box (23). A pressing plate (46) is arranged at the bottom of the innermost filter mesh bag (3). A puncture rod (47) is arranged at the bottom of the pressing plate (46). The bottom end of the puncture rod (47) is sharp, and the bottom end of the puncture rod (47) successively passes through all the filter mesh bags (3) and the through groove (45). A locking nut (48) located outside the leakage box (23) is threadedly connected to the bottom of the puncture rod (47). The outer diameter value of the locking nut (48) is larger than the diameter value of the through groove (45). A plurality of stoppers (49) are arranged at equal intervals in a circular ring shape at the bottom of the outer side surface of the winding wheel (41).

5. The sewage impurity filter according to claim 4, wherein 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 adapting portion (51) adapted to the docking ring portion (5), the bottom of the adapting 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).

6. The sewage impurity filter according to claim 5, characterized in that, The bottom of the docking cover (11) is provided with a plurality of groups of receiving grooves (56), wherein the number of the receiving 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 receiving 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 receiving groove (56), and the elastic coefficient of the pressure spring (58) in each group decreases from the inside to the outside.

7. The sewage impurity filter according to claim 6, characterized in that, The width of the three filter net bags (3) spread out on the surface of the docking ring portion (5) increases 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 to the parts of the three filter net bags (3) spread out on the surface of the docking ring portion (5) from the inside to the outside.

8. A sewage impurity filter according to claim 7, 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 greater than the diameter of the winding wheel (41).

Images