An anti-fouling plugging water distribution mechanism for a filter

Abstract

The present invention discloses an anti-fouling and blocking water distribution mechanism for a filter, comprising a water distribution unit, a check unit and a limiting unit; the water distribution unit comprises a water guide, a cap body, a water distribution body and a connecting part, the water guide and the water distribution body are respectively formed at the upper and lower ends of the cap body, the water guide is connected to the water distribution body through the cap body, a water distribution channel is formed on the annular wall of the water distribution body, and the connecting part is formed at the end of the water distribution body; the check unit comprises a resting part, the check unit is inserted into the water distribution body and blocks the resting part outside the connecting part; the limiting unit comprises a rotating part, the limiting unit is screwed with the connecting part of the water distribution unit through the rotating part, and the rotating part is screwed with the connecting part to position the resting part. When water backwashing or air-water backwashing is performed, the pressure change generated according to the pollution and blockage of the water distribution unit causes the check unit to open different openings, and the overall structure has the advantages of simple structure, convenient use, and improved filtering efficiency.

Description

Technical Field

[0001] The invention relates to an anti-fouling plugging and water distribution mechanism for a filter, belonging to the technical field of water treatment. Background Art

[0002] The function of the filter in the water treatment equipment is to filter out particulate matter in the water. After a period of forward water production, a pollution layer will form on the surface of the filter material. Especially when there are more suspended matter in the incoming water, it is more likely to cause the filter to be quickly blocked, which will reduce the water production pressure of the filter and the filtering effect. At this time, the filter needs to be backwashed, including water backwashing or water-gas backwashing, and then forward water washing.

[0003] At present, when the upper water distributor is backwashing, the pollution layer on the surface of the filter material is prone to form huge blockages, and the backwash water or backwash gas and water have great discharge resistance or even cannot be discharged. At this time, the filter needs to be positively washed to alleviate the blockage, but the subsequent backwashing work will still cause blockage, which will lead to poor water filtration effect of the water treatment equipment and affect the water filtration efficiency.

[0004] The Chinese patent with publication number CN105709470B discloses a filter water distribution structure, wherein the water distribution structure is a tubular structure surrounded by at least one side plate; the two ends of the tubular structure penetrate each other for the circulation of water flow, and the tube wall of the tubular structure. Although the invention expands the water flow outflow area, increases the flow rate of the water flow, and the water flow can flow out from different directions to reduce the water pressure, it still has the problem of fouling and clogging, and cannot effectively perform continuous backwashing. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a water distribution mechanism for a filter that resists fouling and clogging, which can still perform continuous backwashing operations in the case of severe fouling and clogging, thereby ensuring the water filtering effect and filtering efficiency and avoiding the fouling and clogging problems of traditional forward and backwashing.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: an anti-fouling plugging water distribution mechanism for a filter, comprising a water distribution unit, a check unit and a limit unit;

[0007] The water distribution unit comprises a water guide part, a cap body, a water distribution body and a connecting part, wherein the water guide part and the water distribution body are respectively formed at the upper and lower ends of the cap body, the water guide part is connected to the water distribution body through the cap body, a water distribution channel is formed on the annular wall of the water distribution body, and the connecting part is formed at the end of the water distribution body;

[0008] The non-return unit includes a resting portion, which is inserted into the water distribution body and blocks the resting portion outside the assembly connection portion;

[0009] The limiting unit comprises a rotating connection part, through which the limiting unit is screwed to the assembly connection part of the water distribution unit, and the placing part is positioned after the rotating connection part is screwed to the assembly connection part.

[0010] As a preferred solution for the anti-fouling and blocking water distribution mechanism for the filter, the water distribution body is in a truncated cone shape, the water distribution channels are evenly distributed on the annular wall of the water distribution body, and spacer rings are provided on the annular wall of the water distribution body, and the spacer rings divide the water distribution channels into several layers.

[0011] As a preferred solution for the anti-fouling plugging and water distribution mechanism for the filter, the check unit also includes a check body, one end of which is connected to the shelf portion, and the other end of the check body is gathered toward the center to form a sheet-like tail with a check channel.

[0012] As a preferred solution for the anti-fouling plugging and water distribution mechanism for the filter, the non-return unit is made of silicone material, the sheet tail is curved, and the sheet tail is deformed under the action of pressure so that the non-return channel follows the deformation.

[0013] As a preferred solution for the anti-fouling plugging water distribution mechanism for the filter, the placing portion is annular, and a gap for accommodating the placing portion is formed after the screw-on portion and the assembly portion are screwed together.

[0014] As a preferred solution for the anti-fouling and blocking water distribution mechanism for the filter, the assembly part is provided with an external thread, the screw-on part is provided with an internal thread, and the external thread of the assembly part and the internal thread of the screw-on part are screwed together.

[0015] As a preferred solution of the anti-fouling plugging water distribution mechanism for the filter, a water hole is formed at the end of the screw-on portion, and the water hole is connected to the non-return unit.

[0016] As a preferred solution for the anti-fouling plugging water distribution mechanism for the filter, the water guide part, cap body, water distribution body and assembly part are cast as one body, and the end of the water distribution body is recessed inward and extends outward to form the assembly part.

[0017] As a preferred solution for the anti-fouling plugging water distribution mechanism for the filter, the water distribution body is filled with filter material.

[0018] As a preferred solution for the anti-fouling plugging water distribution mechanism for the filter, it includes forward water inlet and reverse flushing;

[0019] During the forward water inflow process, water flows through the water guide part into the water distribution body of the water distribution unit. After entering the water distribution body, the water flows divergently from the water distribution channel on the annular wall of the water distribution body. The water flow inside the water distribution body applies reverse water flow pressure to the check unit inserted into the water distribution body. The reverse water flow pressure causes the sheet tail of the check unit to deform. The sheet tail of the check unit deforms, causing the check channel formed in the sheet tail to follow the deformation. The check channel follows the deformation to block the water flow from passing through the check unit.

[0020] During the backwashing process:

[0021] Water flow path 1: water flows through the limit unit and enters the check body of the check unit. After entering the check body, the water flows into the sheet-shaped tail of the check unit. The water flows through the check channel in the sheet-shaped tail and enters the water distribution body of the water distribution unit. When the water flows through the check channel, a positive water flow pressure is applied to the sheet-shaped tail, and the positive water flow pressure expands the check channel.

[0022] Water flow path 2: Water flows through the water distribution channel on the water distribution body ring wall of the water distribution unit and is introduced into the water distribution body in a contracted shape;

[0023] The water flows in the water flow path 1 and the water flow path 2 are gathered inside the water distribution body and then flow out through the water guide part.

[0024] The present invention plays a role in coarse filtration and diversion of incoming water during the forward water production operation and forward flushing process of the filter, blocks large particles in the incoming water and diverts the water, and evenly sprays it on the surface of the filter material to achieve a good filtration effect. The check unit is in a closed state under the action of the incoming water pressure; when water backwashing or air-water backwashing is performed, the check unit is opened to different degrees according to the pressure change caused by the pollution and blockage of the water distribution unit. The opening is large when the backwashing pressure is large, and vice versa. The limit unit can prevent the filter material from expanding during the backwashing process and overflowing from the filter with the backwashing water flow, and at the same time has the function of fixing the check unit. The present invention as a whole has the advantages of simple structure, easy use, and can improve filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0027] Figure 1 It is an exploded schematic diagram of an anti-fouling plugging and water distribution mechanism for a filter provided in an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the overall structure of the anti-fouling plugging and water distribution mechanism for the filter provided in an embodiment of the present invention;

[0029] Figure 3 It is an enlarged schematic diagram of the sheet-shaped tail portion of the anti-fouling plugging and water distribution mechanism check unit for the filter provided in an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of a forward water production operation process and a forward flushing process provided in an embodiment of the present invention;

[0031] Figure 5 It is a schematic diagram of the water backwashing or gas-water backwashing process provided in an embodiment of the present invention.

[0032] In the figure, 1. water distribution unit; 2. check unit; 3. limit unit; 4. water guide part; 5. cap body; 6. water distribution body; 7. assembly part; 8. water distribution channel; 9. shelf part; 10. screw-on part; 11. check body; 12. check channel; 13. sheet tail; 14. spacer ring; 15. water hole. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] See also Figure 1 and Figure 2 , an anti-fouling and blocking water distribution mechanism for a filter is provided, comprising a water distribution unit 1, a check unit 2 and a limiting unit 3. The water distribution unit 1 comprises a water guide 4, a cap body 5, a water distribution body 6 and a connecting portion 7, wherein the water guide 4 and the water distribution body 6 are respectively formed at the upper and lower ends of the cap body 5, the water guide 4 is connected to the water distribution body 6 through the cap body 5, a water distribution channel 8 is formed on the annular wall of the water distribution body 6, and the connecting portion 7 is formed at the end of the water distribution body 6. The check unit 2 comprises a resting portion 9, the check unit 2 is inserted into the water distribution body 6 and blocks the resting portion 9 outside the connecting portion 7. The limiting unit 3 comprises a screw-on portion 10, the limiting unit 3 is screwed to the connecting portion 7 of the water distribution unit 1 through the screw-on portion 10, and the screw-on portion 10 is screwed to the connecting portion 7 to position the resting portion 9.

[0036] Specifically, the water guide 4, the cap 5, the water distribution body 6 and the assembly part 7 are cast as one body, and the one-piece molding ensures the structural strength of the entire water distribution unit 1. The end of the water distribution body 6 is recessed inward and extends outward to form the assembly part 7.

[0037] For details, see Figure 3 The non-return unit 2 also includes a non-return body 11, one end of which is connected to the shelf 9, and the other end of the non-return body 11 is gathered toward the center to form a sheet tail 13 with a non-return channel 12. The non-return body 11 is designed in a cylindrical shape, so that it has a larger opening, which is convenient for introducing the reverse water flow into the non-return body 11 during the reverse flushing process, and then entering the non-return channel 12 of the sheet tail 13. The sheet tail 13 is flexible, and the non-return channel 12 can expand and deform under the action of the internal water flow pressure, and then the flow rate of the reverse water flow can be changed according to the pressure. The shelf 9 adopts an annular sheet design, which can be fixed in the gap formed after the assembly part 7 and the rotation part 10 are rotated, thereby playing a role in fixing the non-return unit 2.

[0038] Specifically, the water distribution body 6 is filled with filter material. The function of the filter material itself is to filter the water flow, and the filter material can be selected from commonly used materials on the market. Based on the technical solution, during the reverse water inlet flushing process, the water flow passing through the water distribution channel 8 of the water distribution body 6 can be evenly distributed on the surface of the filter material.

[0039] In one embodiment of the anti-fouling plugging water distribution mechanism for the filter, the water distribution body 6 is truncated cone-shaped, and the water distribution channels 8 are evenly distributed on the annular wall of the water distribution body 6. A spacer ring 14 is provided on the annular wall of the water distribution body 6, and the spacer ring 14 divides the water distribution channels 8 into three layers: upper, middle and lower. The truncated cone-shaped water distribution body 6 can make the water flow have a component velocity along the direction of travel, thereby ensuring the filtering efficiency. The design of the spacer ring 14 can play the role of the skeleton of the water distribution channel 8, thereby improving the impact resistance of the water distribution channel 8.

[0040] In one embodiment of the anti-fouling plugging water distribution mechanism for the filter, the non-return unit 2 is made of silicone material, and the sheet tail 13 is curved. The sheet tail 13 deforms under the action of pressure so that the non-return channel 12 follows the deformation. The non-return unit 2 made of silicone material is flexible, corrosion-resistant, and has a good sealing effect. If particles enter the water outlet, there will be no leakage. More importantly, based on the flexibility of the sheet tail 13, the non-return channel 12 is opened and closed, and the non-return channel 12 expands under pressure, thereby realizing the control of water flow.

[0041] Specifically, the curved sheet tail 13 is designed to be inverted J-shaped, which has an excellent effect, effectively ensuring that the check channel 12 is closed during forward water flow and connected during reverse water flow. The forward and reverse directions of the water flow here are determined relative to the water inlet and outlet directions of the water distribution unit 1. Forward water inflow is equivalent to the reverse force of the sheet tail 13, and conversely, reverse flushing is equivalent to the forward force of the sheet tail 13. At this time, the check channel 12 is opened and the water flux is adjusted based on the change in pressure.

[0042] In one embodiment of the anti-fouling plugging water distribution mechanism for the filter, the assembly part 7 is provided with an external thread, the screw-on part 10 is provided with an internal thread, and the external thread of the assembly part 7 and the internal thread of the screw-on part 10 are screwed together. The assembly part 7 and the screw-on part 10 are connected by a thread, which is convenient for disassembly, and the connection stability is strong after screwing. A water hole 15 is formed at the end of the screw-on part 10, and the water hole 15 is connected to the check unit 2. The function of the water hole 15 is to introduce water flow into the check body 11 of the check unit 2 during backwashing, and then enter the check channel 12.

[0043] Specifically, the anti-fouling plugging water distribution mechanism for the filter includes forward water inlet and reverse flushing;

[0044] See also Figure 4During the forward water inflow process, water flows through the water guide 4 into the water distribution body 6 of the water distribution unit 1. After entering the water distribution body 6, the water flows divergently from the water distribution channel 8 on the annular wall of the water distribution body 6. The water flow inside the water distribution body 6 applies a reverse water flow pressure to the check unit 2 inserted into the water distribution body 6. The reverse water flow pressure causes the sheet tail 13 of the check unit 2 to deform. The sheet tail 13 of the check unit 2 is deformed so that the check channel 12 formed in the sheet tail 13 follows the deformation. The check channel 12 follows the deformation to block the water flow from passing through the check unit 2.

[0045] See also Figure 5 , during the backwash process:

[0046] Water flow path 1: water flows through the limit unit 3 and enters the check body 11 of the check unit 2. After entering the check body 11, the water flows into the sheet-shaped tail 13 of the check unit 2. The water flows through the check channel 12 in the sheet-shaped tail 13 and enters the water distribution body 6 of the water distribution unit 1. When the water flows through the check channel 12, a positive water flow pressure is applied to the sheet-shaped tail 13, and the positive water flow pressure expands the check channel 12.

[0047] Water flow path 2: water flows through the water distribution channel 8 on the ring wall of the water distribution body 6 of the water distribution unit 1 and is introduced into the water distribution body 6 in a contracted shape;

[0048] The water flows in the water flow path 1 and the water flow path 2 are gathered inside the water distribution body 6 and then flow out through the water guide part 4 .

[0049] The present invention plays a role in coarse filtration and diversion of incoming water during the forward water production operation and forward flushing process of the filter, blocks large particles in the incoming water and diverts the water, and evenly sprays it on the surface of the filter material to achieve a good filtration effect. The check unit 2 is in a closed state under the action of the incoming water pressure; when water backwashing or air-water backwashing is performed, the check unit 2 is opened to different degrees according to the pressure change caused by the pollution and blockage of the water distribution unit 1. The opening is large when the backwashing pressure is large, and vice versa. The limit unit 3 can prevent the filter material from expanding during the backwashing process and overflowing from the filter with the backwashing water flow, and at the same time has the function of fixing the check unit 2. The present invention as a whole has the advantages of simple structure, easy use, and can improve filtration efficiency.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An anti-fouling plugging water distribution mechanism for a filter, characterized by: It comprises a water distribution unit (1), a check unit (2) and a limit unit (3); The water distribution unit (1) comprises a water guide portion (4), a cap body (5), a water distribution body (6) and a connecting portion (7); the water guide portion (4) and the water distribution body (6) are respectively formed at the upper and lower ends of the cap body (5); the water guide portion (4) is connected to the water distribution body (6) via the cap body (5); a water distribution channel (8) is formed on the annular wall of the water distribution body (6); and the connecting portion (7) is formed at the end of the water distribution body (6); The non-return unit (2) comprises a resting portion (9), and the non-return unit (2) is inserted into the water distribution body (6) and blocks the resting portion (9) outside the assembly connection portion (7); The limiting unit (3) comprises a screw-connecting portion (10), and the limiting unit (3) is screw-connected to the assembly portion (7) of the water distribution unit (1) via the screw-connecting portion (10), and the placing portion (9) is positioned after the screw-connecting portion (10) is screw-connected to the assembly portion (7); The water distribution body (6) is in a truncated cone shape, and the water distribution channels (8) are evenly distributed on the annular wall of the water distribution body (6); a spacer ring (14) is provided on the annular wall of the water distribution body (6), and the spacer ring (14) divides the water distribution channel (8) into a plurality of layers; The non-return unit (2) further comprises a non-return body (11), one end of the non-return body (11) being connected to the shelf portion (9), and the other end of the non-return body (11) being gathered toward the center to form a sheet-shaped tail portion (13) having a non-return channel (12); A water hole (15) is formed at the end of the screw-on portion (10), and the water hole (15) is connected to the non-return unit (2); the water guide portion (4), the cap body (5), the water distribution body (6) and the assembly portion (7) are cast as one body, and the end of the water distribution body (6) is recessed inwardly and extends outwardly to form the assembly portion (7); the water distribution body (6) is filled with filter material; The invention comprises forward water inflow and reverse flushing; during the forward water inflow process, water flows through a water guide portion (4) into a water distribution body (6) of a water distribution unit (1); after entering the water distribution body (6), the water flows divergently from a water distribution channel (8) on the annular wall of the water distribution body (6); the water flow inside the water distribution body (6) exerts reverse water flow pressure on a check unit (2) inserted into the water distribution body (6); the reverse water flow pressure causes a sheet-shaped tail portion (13) of the check unit (2) to deform; the sheet-shaped tail portion (13) of the check unit (2) deforms so that a check channel (12) formed in the sheet-shaped tail portion (13) follows the deformation; the check channel (12) follows the deformation to block the water flow from passing through the check unit (2); during the reverse flushing process: water flow path 1: water flow The water flows into the check body (11) of the check unit (2) through the limit unit (3); the water flows after entering the check body (11) are introduced into the sheet-shaped tail (13) of the check unit (2); the water flows through the check channel (12) in the sheet-shaped tail (13) and enters the water distribution body (6) of the water distribution unit (1); when the water flows through the check channel (12), a positive water flow pressure is applied to the sheet-shaped tail (13); the positive water flow pressure causes the check channel (12) to expand; water flow path two: the water flows through the water distribution channel (8) on the annular wall of the water distribution body (6) of the water distribution unit (1) and is introduced into the water distribution body (6) in a convergent manner; the water flows of the water flow path one and the water flow path two are gathered inside the water distribution body (6) and then flow out through the water guide (4).

2. The anti-fouling plugging water distribution mechanism for a filter according to claim 1, characterized in that: The non-return unit (2) is made of silicone material, the sheet-shaped tail (13) is curved, and the sheet-shaped tail (13) deforms under the action of pressure so that the non-return channel (12) follows the deformation.

3. The anti-fouling plugging water distribution mechanism for a filter according to claim 1, characterized in that: The placement portion (9) is annular, and after the screw-on portion (10) and the assembly portion (7) are screwed together, a gap is formed to accommodate the placement portion (9).

4. The anti-fouling plugging water distribution mechanism for a filter according to claim 1, characterized in that: The assembly part (7) is provided with an external thread, the screw-on part (10) is provided with an internal thread, and the external thread of the assembly part (7) and the internal thread of the screw-on part (10) are screwed together.

Images