Filtering device for water supply pipeline

Abstract

The utility model relates to the technical field of water supply pipelines, in particular to a water supply pipeline filtering device. Comprising a water supply pipeline, a first flange is arranged at the end of the water supply pipeline, a conical filtering assembly is arranged on the first flange and located in an inner cavity of the water supply pipeline, the axis direction of the filtering assembly is consistent with that of the water supply pipeline, and the diameter is gradually reduced in the reverse water flow direction; the filtering assembly comprises a first filtering assembly, a second filtering assembly and a cleaning assembly which are sequentially arranged in a sleeving mode, the second filtering assembly is movably arranged between the first filtering assembly and the cleaning assembly in a sleeving mode, and the second filtering assembly controls the coincidence degree with filtering holes of the first filtering assembly through rotation so as to adjust the filtering precision; the rotary action synchronously drives the cleaning assembly to execute rotary scraping operation; and the second filtering assembly can be synchronously cleaned when the filtering precision is automatically adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to water supply pipeline technical field especially is related to a water supply pipeline filtering device. BACKGROUND

[0002] The water supply pipeline filtering device is a key equipment for removing impurities such as suspended solids, silt and rust in water, which is usually composed of a filter screen and a shell. It improves water quality through physical interception or adsorption, ensures the cleanliness and safety of the water supply system, and is widely used in household, industrial and municipal water supply systems. It can effectively prolong the service life of the pipeline and water equipment and reduce the risk of blockage.

[0003] The current filtering device has fixed filtering precision and cannot be adjusted automatically, which makes it difficult to adapt to changes in water quality and particle size. Small particles such as bacteria and colloids can easily penetrate the filter screen and cause residue, threatening water quality safety or damaging downstream equipment. At the same time, the rapid accumulation of impurities increases the blockage rate of the filter screen, which requires frequent disassembly and cleaning or replacement, increasing operation and maintenance costs and possibly causing secondary pollution or system downtime due to operational errors. Long-term blockage can also increase the pressure difference of the pipeline, reduce water supply efficiency, and exacerbate filter screen structure fatigue and even damage, further increasing the risk of pollution. In addition, long-term residue of small particles can accelerate microbial growth and pipeline corrosion, forming a vicious cycle.

[0004] Therefore, the present application provides a water supply pipeline filtering device to solve the problems raised in the background. SUMMARY

[0005] The utility model discloses a water supply pipeline filtering device, which solves the problem that the existing filtering device cannot adjust the filtering precision automatically and small particles easily block the filter screen.

[0006] To solve the above technical problems, the utility model provides a water supply pipeline filtering device, which comprises a water supply pipeline, a first flange arranged at the end of the water supply pipeline, a conical filter assembly arranged on the first flange, the filter assembly being located in the inner cavity of the water supply pipeline, the filter assembly being consistent with the axial direction of the water supply pipeline and gradually reducing in diameter against the water flow direction.

[0007] The filter assembly comprises a first filter assembly, a second filter assembly and a cleaning assembly arranged in sequence, the second filter assembly being movably arranged between the first filter assembly and the cleaning assembly, the second filter assembly adjusting the filtering precision by rotating to coincide with the filter holes of the first filter assembly, and the rotating action synchronously driving the cleaning assembly to perform rotating scraping operation.

[0008] The further improvement of the utility model technical scheme is that an adjustment gap with a central angle of 45° is formed on the first flange.

[0009] The further improvement of the utility model technical scheme lies in: the first filter assembly includes the second flange which is arranged in abutment with the first flange, the conical first filter screen which is arranged in the inner ring of the second flange and gradually shrinks in diameter in the direction opposite to the water flow, the edge groove which is arranged at the joint of the first filter screen and the second flange, the plurality of filter holes which are evenly arranged on the first filter screen, the long strip shape of the filter holes along the circumferential direction, the 10° of the central angle corresponding to the single filter hole along the circumferential direction, the 10° of the central angle corresponding to the interval between the adjacent filter holes, and the axial positioning column which is arranged at the conical end of the first filter screen.

[0010] The further improvement of the utility model technical scheme lies in: the four square limiting holes which are evenly arranged on the second flange along the circumferential direction, and the plurality of scale lines which are arranged between the two adjacent limiting holes, and the 5° of the scale of the adjacent two scale lines.

[0011] The further improvement of the utility model technical scheme lies in: the second filter assembly includes the second filter screen which is sleeved on the outer side wall of the first filter screen, the plurality of filter holes which are evenly arranged on the second filter screen, the blocking edge which is arranged at the edge of the second filter screen and is matched with the edge groove, the operation lever which is arranged on the blocking edge, the scale needle which is arranged on the operation lever and is matched with the scale line, the filtering precision indication system which is formed by the cooperation of the scale needle and the scale line, and the scale line which is pointed by the scale needle and corresponds to the real-time filtering precision value.

[0012] The further improvement of the utility model technical scheme lies in: the same distribution of the filter holes of the first filter screen and the second filter screen.

[0013] The further improvement of the utility model technical scheme lies in: the cleaning assembly includes the cleaning screen which is sleeved on the outer side wall of the second filter screen, the cleaning screen includes the eight cleaning rods which are evenly distributed in the radial shape, the cleaning rods are arranged in abutment with the outer side wall of the second filter screen, the fixing ring is arranged at the tail end of the cleaning rods, and the limiting block which is matched with the limiting hole is arranged on the fixing ring.

[0014] The further improvement of the utility model technical scheme lies in: the through hole which is matched with the positioning column is arranged on the front end of the cleaning rod and the second filter screen.

[0015] The further improvement of the utility model technical scheme lies in: the sealing ring is arranged between the first flange, the fixing ring, the blocking edge and the second flange.

[0016] The further improvement of the utility model technical scheme lies in: the first flange and the second flange are connected through the plurality of fastening bolts.

[0017] The above technical scheme is adopted, and the utility model has the following beneficial effects:

[0018] 1. The water supply pipeline filtration device provided by this utility model is conducive to multi-level precision dynamic adjustment. Through the rotation of the second filter component, the overlap of the filter holes of the first and second filter screens can be precisely controlled, realizing stepless switching from coarse filtration to fine filtration. This effectively solves the problem of poor adaptability caused by the fixed filtration precision of traditional devices. The interception particle size can be flexibly adjusted for different water qualities. The mechanical indication of the scale needle and scale line realizes the linear correspondence between the adjustment angle and the filtration precision. Operators can complete the precision calibration without special tools. The adjustment error is controlled within ±2%, which solves the problem of filtration failure caused by blind adjustment of traditional devices.

[0019] 2. The water supply pipeline filtration device provided by this utility model has a self-cleaning synchronous triggering mechanism. The rotation action synchronously drives the cleaning component to perform a rotational scraping operation. The rotation action is achieved by the engagement of the limiting hole and the limiting block. The cleaning screen is stationary while the second filter screen rotates. Therefore, the second filter screen and the cleaning screen rotate relative to each other, driving the eight radial cleaning rods of the cleaning component to scrape the surface of the second filter screen around the entire circumference. This design can remove more than 85% of the surface deposits during the adjustment process. Compared with the traditional shutdown and disassembly cleaning method, it reduces the clogging rate, extends the operation and maintenance cycle, and significantly reduces the risk of seal failure caused by frequent disassembly.

[0020] 3. The water supply pipeline filtration device provided by this utility model has a filtration component that gradually narrows in diameter against the direction of water flow, combined with an arrangement of long strip-shaped filter holes to form a gradually narrowing water flow channel. This structure allows large particles of impurities to settle quickly at the inlet end, while small particles are intercepted step by step under the gradually increasing filtration gradient, reducing the pressure difference of the filtration component, effectively alleviating structural fatigue, and avoiding device damage caused by sudden changes in pressure difference. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a water supply pipeline filtration device;

[0023] Figure 2 A schematic diagram of a water supply pipeline filtration device;

[0024] Figure 3 An exploded view of a water supply pipeline filtration device;

[0025] Figure 4 This is a schematic diagram of the structure of the first filter component of this utility model;

[0026] Figure 5 It is a structural schematic view of the second filter assembly of the utility model;

[0027] Figure 6 It is a structural schematic view of the cleaning assembly of the utility model;

[0028] Figure 7 It is a structural schematic view of the filter assembly of the utility model;

[0029] Figure 8 It is a half sectional view of the water supply pipeline filtering device;

[0030] Figure 9 It is Figure 8 The enlarged schematic view of A part in the middle.

[0031] Reference signs: 1, water supply pipeline; 11, first flange; 12, adjusting gap; 2, filter assembly; 21, first filter assembly; 211, second flange; 212, first filter screen; 213, edge groove; 214, filter hole; 215, positioning column; 216, limiting hole; 217, scale line; 22, second filter assembly; 221, second filter screen; 222, blocking edge; 223, operation lever; 224, scale needle; 23, cleaning assembly; 231, cleaning screen; 232, cleaning rod; 233, fixing ring; 234, limiting block; 235, through hole; 24, sealing ring; 25, fastening bolt. DETAILED DESCRIPTION

[0032] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0033] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0035] The utility model is further explained and described below in combination with specific embodiments.

[0036] As Figures 1-9 The utility model provides a water supply pipeline filter device, including water supply pipeline 1, the end of water supply pipeline 1 is provided with first flange 11, the first flange 11 is provided with the filter assembly 2 of taper, the filter assembly 2 is located in the inner chamber of water supply pipeline 1, the filter assembly 2 is consistent with the axial direction of water supply pipeline 1, and gradually shrinks in diameter in the direction of water flow, and the filter assembly 1 gradually shrinks in diameter in the direction of water flow, forms the tapered water flow passage, the structure makes large particle impurities quickly settle in the inlet end, and small micro-particle is intercepted gradually under the gradually increasing filtration gradient, reduces the pressure difference of filter assembly 2, effectively alleviates structural fatigue, avoids the damage of device caused by pressure difference mutation, and the filter assembly 2 includes first filter assembly 21, second filter assembly 22 and cleaning assembly 23 that are successively sleeved, the second filter assembly 22 is movably sleeved between first filter assembly 21 and cleaning assembly 23, and the filter precision is adjusted by the coincidence degree of the filter hole 214 of first filter assembly 21 with the second filter assembly 22 through rotation control, and the rotation action synchronously drives cleaning assembly 23 to perform rotation scraping operation.

[0037] As Figures 3-4 In the embodiment, the first filter assembly 21 includes the second flange 211 that is arranged to abut the first flange 11, the inner ring of the second flange 211 is provided with a tapered first filter screen 212 that gradually shrinks in diameter in the direction opposite to the water flow, a side groove 213 is formed at the junction of the first filter screen 212 and the second flange 211, a plurality of filter holes 214 are uniformly formed on the first filter screen 212, the filter holes 214 are long strips in the circumferential direction, the long strip-shaped filter holes 214 can intercept sheet-shaped impurities such as algae and plastic fragments, and allow linear changes in the coincidence degree of the filter holes 214 during adjustment, the precision control error is ≤±3%, the central angle corresponding to the long side of a single filter hole 214 in the circumferential direction is 10°, the central angle corresponding to the interval between adjacent filter holes 214 is 10°, four square limiting holes 216 are uniformly formed on the second flange 211 in the circumferential direction, a plurality of scale lines 217 are arranged between two adjacent limiting holes 216, and the degree of the two adjacent scale lines 217 is 5°, and the tapered end of the first filter screen 212 is provided with an axial positioning column 215, which provides an axial limiting reference for the second filter assembly 22.

[0038] As Figures 3-5 shown, in this embodiment, the second filter assembly 22 includes a second filter screen 221 sleeved on the outer wall of the first filter screen 212. A plurality of filter holes 214 are uniformly arranged on the second filter screen 221. A stop edge 222 of the fitting edge slot 213 is arranged at the edge of the second filter screen 221. The edge slot 213 and the stop edge 222 cooperate to avoid sealing failure caused by eccentric wear. An operating lever 223 is arranged on the stop edge 222. A scale needle 224 corresponding to a scale line 217 is arranged on the operating lever 223. The scale needle 224 and the scale line 217 cooperate to form a filtering precision indicating system. The scale line 217 pointed by the scale needle 224 corresponds to a real-time filtering precision value. An adjustment gap 12 with a central angle of 45° is arranged on the first flange 11. The edge of the adjustment gap 12 is chamfered. The adjustment gap 12 limits the rotation stroke of the operating lever 223 to 45°, preventing misalignment of the filter holes 214 caused by excessive adjustment. The filter holes 214 of the first filter screen 212 and the second filter screen 221 are distributed identically. Through the rotating action of the second filter assembly 22, the coincidence degree of the filter holes 214 of the first filter screen 212 and the second filter screen 221 can be accurately controlled, realizing stepless switching from coarse filtering to fine filtering. The poor adaptability caused by the fixed filtering precision of the traditional device is effectively solved. The interception particle size can be flexibly adjusted according to different water quality. The mechanical indication of the scale needle 224 and the scale line 217 realizes linear correspondence between the adjustment angle and the filtering precision. The operator can complete precision calibration without special tools. The adjustment error is controlled within ±2%, solving the filtering failure problem caused by blind adjustment of the traditional device.

[0039] As Figures 3-7As shown, in the embodiment, the cleaning assembly 23 comprises a cleaning net 231 sleeved on the outer wall of the second filter screen 221, the cleaning net 231 comprises eight cleaning rods 232 evenly distributed in a radial manner, the cleaning rods 232 abut against the outer wall of the second filter screen 221, the ends of the cleaning rods 232 are jointly provided with a fixing ring 233, the fixing ring 233 is provided with a limiting block 234 matched with the limiting hole 216, and the front end of the cleaning net 232 and the second filter screen 221 are provided with a through hole 235 matched with the positioning column 215. The filter device has a self-cleaning synchronous triggering mechanism, the rotating action synchronously drives the cleaning assembly 23 to perform the rotating scraping operation, the rotating action is clamped through the limiting hole 216 and the limiting block 234, the cleaning net 231 is static, the second filter screen 221 rotates, and therefore the second filter screen 221 and the cleaning net 231 relatively rotate, the eight radial cleaning rods 232 of the cleaning assembly 23 scrape the surface of the second filter screen 221 in a full circle, since the cleaning net 231 comprises eight cleaning rods 232, the corresponding rotation angle between adjacent two cleaning rods 232 is 45°, which is matched with the angle of the adjusting gap 12, the second filter screen 221 is rotated by 45°, and the whole outer surface of the second filter screen 221 can be scraped, the design can synchronously remove more than 85% of surface attachments in the adjusting process, compared with the traditional shutdown and cleaning mode, the clogging rate is reduced, the operation and maintenance cycle is prolonged, and the sealing failure risk caused by frequent disassembly is significantly reduced.

[0040] As Figures 8-9 As shown, in the embodiment, the first flange 11 is rigidly connected with the second flange 211 through four groups of stainless steel fastening bolts 25, and the sealing rings 24 are arranged between the first flange 11, the fixing ring 233, the baffle 222 and the second flange 211, so that the airtightness is good.

[0041] The working principle of the technical scheme provided by the utility model in use is as follows:

[0042] The water flow in the water supply pipeline 1 passes through the second filter screen 221 and the first filter screen 212 in turn, the filter holes 214 of the first filter screen 212 and the second filter screen 221 are completely overlapped in the initial state, the filtering precision is the lowest, the operating lever 223 is rotated by 5°, the second filter screen 221 is rotated, the filter holes 214 of the second filter screen 221 are overlapped with the filter holes 214 of the first filter screen 212 by 50%, the filtering precision is improved, the operating lever 223 is rotated by 10° again, the filter holes 214 of the second filter screen 221 are completely overlapped with the filter holes 214 of the first filter screen 212 again; when the operating lever 223 is rotated, the rotating action synchronously drives the cleaning assembly 23 to perform the rotating scraping work, the rotating action is clamped through the limiting hole 216 and the limiting block 234, the cleaning screen 231 is static, the second filter screen 221 is rotated, therefore, the second filter screen 221 and the cleaning screen 231 are relatively rotated, the eight radial cleaning rods 232 of the cleaning assembly 23 drive the surface of the second filter screen 221 to be scraped all around, since the cleaning screen 231 comprises eight cleaning rods 232, therefore, the corresponding rotating angle between the adjacent two cleaning rods 232 is 45°, which is adapted to the angle of the adjusting gap 12, the second filter screen 221 is rotated by 45°, so that the whole surface can be scraped and the impurities are removed.

[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A water supply pipe filtering device, characterized by, The utility model provides a filter assembly for water supply pipeline, which comprises a water supply pipeline (1), a first flange (11) arranged at the end of the water supply pipeline (1), and a tapered filter assembly (2) arranged on the first flange (11) and located in the inner cavity of the water supply pipeline (1) and consistent with the axial direction of the water supply pipeline (1) and gradually reduced in diameter against the water flow direction. The filter assembly (2) comprises a first filter assembly (21), a second filter assembly (22), and a cleaning assembly (23) arranged in sequence, the second filter assembly (22) is movably arranged between the first filter assembly (21) and the cleaning assembly (23), the second filter assembly (22) is rotated to coincide with the filter holes (214) of the first filter assembly (21) to adjust the filtering accuracy, and the rotating operation synchronously drives the cleaning assembly (23) to perform the rotating scraping operation.

2. A water supply pipe filtering device according to claim 1, wherein An adjusting gap (12) with a central angle of 45° is formed in the first flange (11).

3. The water supply pipe filtering device according to claim 1, wherein The first filter assembly (21) comprises a second flange (211) arranged against the first flange (11), a tapered first filter screen (212) arranged in the inner ring of the second flange (211) and gradually reduced in diameter against the water flow direction, a side groove (213) formed at the junction of the first filter screen (212) and the second flange (211), a plurality of filter holes (214) uniformly formed in the first filter screen (212), the filter holes (214) are long strips in the circumferential direction, the central angle corresponding to the long side of a single filter hole (214) in the circumferential direction is 10°, the central angle corresponding to the interval between adjacent filter holes (214) is 10°, and an axial positioning column (215) is arranged at the tapered end of the first filter screen (212).

4. A water supply pipe filtering device according to claim 3, wherein Four square limiting holes (216) are uniformly formed in the circumferential direction of the second flange (211), and a plurality of scale lines (217) are arranged between two adjacent limiting holes (216), the degree of the adjacent two scale lines (217) is 5°.

5. A water supply pipe filtering device according to claim 4, wherein The second filter assembly (22) comprises a second filter screen (221) arranged on the outer side wall of the first filter screen (212), a plurality of filter holes (214) uniformly formed in the second filter screen (221), a blocking edge (222) arranged at the edge of the second filter screen (221) and matched with the side groove (213), an operation lever (223) arranged on the blocking edge (222), a scale needle (224) arranged on the operation lever (223) and matched with the scale line (217) to form a filtering accuracy indicating system, and the scale line (217) pointed by the scale needle (224) corresponds to the real-time filtering accuracy value.

6. A water supply pipe filtering device according to claim 5, wherein The filter holes (214) of the first filter screen (212) and the second filter screen (221) are distributed in the same way.

7. A water supply pipe filtering device according to claim 5, wherein The cleaning assembly (23) comprises a cleaning screen (231) arranged on the outer side wall of the second filter screen (221), the cleaning screen (231) comprises eight cleaning rods (232) uniformly distributed in a radial manner, the cleaning rods (232) abut against the outer side wall of the second filter screen (221), the ends of the cleaning rods (232) are jointly provided with a fixing ring (233), and a limiting block (234) matched with the limiting hole (216) is arranged on the fixing ring (233).

8. A water supply pipe filtering device according to claim 6, wherein The front end of the cleaning rod (232) and the second filter screen (221) is provided with a through hole (235) for fitting the positioning column (215).

9. A water supply pipe filtering device according to claim 6, wherein A sealing ring (24) is arranged between the first flange (11), the fixing ring (233), the baffle (222) and the second flange (211).

10. The water supply pipe filtering device according to claim 3, wherein The first flange (11) and the second flange (211) are connected through a plurality of fastening bolts (25).

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