Adjustable filter head structure of ABR reaction tank

Abstract

The utility model discloses an adjustable filter head structure of an ABR (Anaerobic Baffled Reactor) reaction tank, which is characterized in that an embedded part, a filter cap and a fixing ring adopt the original structure, an original long filter rod is divided into two parts, a filter rod head is arranged in the embedded part through the fixing ring and an adjusting petal, and the lower end of a part of the filter rod head is sleeved with a filter rod pipe which extends downwards; a short filter rod head is arranged between long filter rod pipes, the whole filter head covers a certain height, a channel is provided for emptying air bubbles as much as possible, an air hole is formed in the position, close to the surface of a filter plate, of the lower end of an embedded part, an air hole is also formed in the position, close to the surface of the filter rod head, of the embedded part, and the two air holes provide another channel for emptying the air bubbles. Through mutual cooperation of the structures, the problems in the prior art can be basically solved, the flowing states of sewage at all positions of the supporting layer are roughly the same, and assistance is provided for reducing the risk that impurities such as particles are hardened in the supporting layer.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial wastewater treatment, and relates to the improvement of an ABR structure, in particular to an adjustable filter head structure of an ABR reaction tank. Background Art

[0002] The structure of the adjustable filter head 5 is roughly as follows: it includes a filter cap 8, an embedded part 11 and a filter rod. The lower end 14 of the embedded part extends from the opening of the filter plate 7 and is limited to the upper end surface of the filter plate through the card-mounted piece 12 on the outer surface. The elastic sheet made on the outer surface of the lower end of the embedded part is against the surface beside the opening of the filter plate. The card-mounted piece and the elastic sheet fix the embedded part on the filter plate. The filter rod is inserted into the embedded part, and the upper end of the filter rod is screwed and fixed in the fixing ring 15 placed in the internal groove 17 of the upper end of the embedded part. The adjustment flap 18 set on the outer surface of the filter rod located in the lower end of the embedded part contacts the anti-slip strip aligned inside the embedded part. During construction, the filter plate is first fixed on the adjacent filter beam 6 at the bottom of the reaction tank 1, and then the embedded part inserted with the filter rod is embedded in the opening of the filter plate, and then the protective cover is screwed on the opening on the embedded part, and cement is poured to form a fixed layer 4, and then the filter cap is installed after the protective cover is removed. Then, the supporting layer 3 and the carrier filter layer 2 composed of multiple layers of gravel are laid at one time. When in use, the structure that connects the supporting layer and the bottom of the reaction tank by combining the filter cap, embedded parts and filter rods is used to achieve uniform air distribution and water distribution during backwashing. The following problems are found in actual use: after backwashing, after backwashing the reaction tank, there will be a certain amount of gas at the bottom of the reaction tank below the filter plate. These gases should enter from the strip holes and be discharged from the upper end of the filter head, but in fact, some of the gas will rise to the bottom of the filter plate and accumulate here. After a period of time, a large area of ​​air bubbles will be formed at the bottom of the filter plate, and the strip holes are lower than the position of these air bubbles, so that the air cannot be effectively discharged, which will locally affect the sewage passing through the filter head and the supporting layer into the carrier filter layer, and these local problems will change the flow state of the sewage there, and ultimately increase the risk of impurities such as particles being compacted in the supporting layer there. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an adjustable filter head structure for an ABR reaction tank.

[0004] The technical solution adopted by the utility model to solve the technical problem is:

[0005] An adjustable filter head structure for an ABR reaction tank comprises a plurality of filter plates, a plurality of embedded parts and a plurality of filter caps, wherein a plurality of embedded parts are arranged in each filter plate, and the filter cap is installed at the end of each embedded part located above the filter plate, and the structure is characterized in that: a filter rod head is arranged inside each embedded part; a filter rod tube extending downward is sleeved at the lower end of at least one filter rod head on each filter plate; an air hole is arranged at the surface of the lower end of the embedded part close to the filter plate, and an air hole is also arranged on the surface of the filter rod head close to the air hole.

[0006] Furthermore: the filter rod tubes in adjacent rows of the filter plates are arranged in a staggered manner.

[0007] Furthermore: the filter rod tubes in each row of the filter plates are arranged at intervals.

[0008] Furthermore, the upper end of the filter rod head located inside the embedded part is screwed and fixed to a fixing ring arranged in a groove made by the embedded part.

[0009] Further: the lower end portion of the filter rod head is located inside the lower end portion of the embedded component or the lower end of the filter rod head is completely located inside the lower end portion of the embedded component.

[0010] Furthermore: an adjustment flap is arranged on the outer surface of the filter rod head located inside the embedded part, and an anti-dropping strip cooperating with the adjustment flap is arranged in the embedded part and aligned with the adjustment flap.

[0011] The technical effects achieved by the utility model are:

[0012] In the utility model, the embedded parts, filter caps, and fixing rings use the original structures, and the original long filter rod is divided into two parts. The filter rod head is installed in the embedded parts through the fixing ring and the adjusting flap, and the lower end of some filter rod heads is equipped with a filter rod tube extending downward. A short filter rod head is arranged between the long filter rod tubes, so that the filter head as a whole covers a certain height, providing a channel for the air bubbles to be emptied as much as possible. The surface of the lower end of the embedded part close to the filter plate is provided with air holes, and the surface of the filter rod head close to it is also provided with air holes. These two air holes provide another channel for the air bubbles to be emptied. Through the cooperation of the above structures, the problems existing in the prior art can be basically solved, and the flow state of sewage in various parts of the supporting layer can be made roughly the same, which also helps to reduce the risk of impurities such as particles being compacted in the supporting layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 An enlarged view of the leftmost filter plate;

[0015] Figure 3 for Figure 2 A magnified view of . DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0017] An adjustable filter head structure for an ABR reaction tank includes a plurality of filter plates 7, a plurality of embedded parts 11 and a plurality of filter caps 8. A plurality of embedded parts are arranged in each filter plate, and the filter cap is installed at the end of each embedded part located above the filter plate, and a filter rod head 9 is arranged inside each embedded part; a filter rod tube 21 extending downward is set inside the lower end 16 of at least one filter rod head on each filter plate; an air hole 22 is arranged at the surface of the lower end of the embedded part close to the filter plate, and an air hole 22 is also arranged on the surface of the filter rod head close to the air hole. The filter rod tubes of adjacent rows of the filter plate are staggered, and the filter rod tubes of each row of the filter plate are arranged at intervals.

[0018] The above-mentioned row refers to each long protrusion on the filter plate and the opening formed thereon, which constitutes a row, and all the openings with the same long protrusion position constitute a column. For example, the commonly used filter plate currently has seven long protrusions, that is, there are seven rows, and there are also seven openings with the same long protrusion position, that is, there are seven columns. Forty-nine embedded parts are installed for all the openings on a filter plate.

[0019] In the row direction of a filter plate, the first opening of the first row is installed with a filter rod tube, the second opening is not installed, the third opening is installed with a filter rod tube, and so on, that is, the filter rod tubes in the row direction are arranged at intervals. In the second row adjacent to the first row, the first opening is not installed with a filter rod tube, the second opening is installed with a filter rod tube, and so on, the filter rod tubes in the second row are staggered compared with the first row. Of course, the way that every two filter rod tubes are installed in the first row, and every two filter rod tubes are not installed in the second row can also be called staggered arrangement.

[0020] The filter rod head set structure is as follows: an internal thread is formed inside the lower end of the filter rod head, and an external thread is formed on the outer surface of the upper end 19 of the filter rod tube, and the two are screwed together and fixedly connected together; or the two are respectively formed with a slot and a block, and are fixedly connected together by the slot and the block being fixed to each other.

[0021] The outer surface of the upper end 10 of the filter rod head located inside the embedded part is formed with an external thread, which is screwed and fixed to the fixing ring 15 set in the groove 17 formed by the embedded part. The positioning function of the groove, the fixing ring and the fixing ring on the filter rod head is the same as that of the prior art. By screwing the fixing ring on different positions of the filter rod head, the position of the filter rod head in the vertical direction can also be adjusted, for example: the filter rod head is closer to the top (that is, the fixing ring is screwed on the lower position of the upper end of the filter rod head), and the lower end of the filter rod head is completely located inside the lower end of the embedded part; and the filter rod head is closer to the bottom (that is, the fixing ring is screwed on the upper position of the upper end of the filter rod head), and the lower end of the filter rod head is partially located inside the lower end of the embedded part.

[0022] The structure matched with the fixing ring is: the outer surface of the filter rod head located inside the embedded part is provided with an adjusting flap 18, and the embedded part and the adjusting flap are aligned with each other and an anti-dropping strip 20 matched with the adjusting flap is provided.

[0023] A plurality of strip-shaped holes are formed on the outer surface of the lower end of the filter rod tube for air to enter. The opening at the lower end of the filter rod head allows air to enter. The air holes on the embedded parts and the filter rod head allow air to enter.

[0024] In the above structures, the embedded parts, filter caps, and fixing rings use the original structures, and the original long filter rod is divided into two parts. The filter rod head is installed in the embedded parts through the fixing ring and the adjusting flap, and the lower end of some filter rod heads is equipped with a filter rod tube extending downward. Short filter rod heads are arranged between the long filter rod tubes so that the filter head as a whole covers a certain height, providing a channel for the air bubbles to be emptied as much as possible. Air holes are arranged on the surface of the lower end of the embedded parts close to the filter plate, and air holes are also arranged on the surface of the filter rod head close to it. These two air holes provide another channel for the air bubbles to be emptied. Through the cooperation of the above structures, the problems existing in the prior art can be basically solved, and the flow state of sewage in various parts of the supporting layer can be made roughly the same, which also helps to reduce the risk of impurities such as particles being compacted in the supporting layer.

Claims

1. An adjustable filter head structure for an ABR reaction tank, comprising a plurality of filter plates, a plurality of embedded parts and a plurality of filter caps, wherein a plurality of embedded parts are arranged in each filter plate, and the filter cap is installed at the end of each embedded part located above the filter plate. Features: A filter rod head is arranged inside each embedded part; a filter rod tube extending downward is sleeved on the lower end of at least one filter rod head on each filter plate; air holes are arranged on the surface of the lower end of the embedded part close to the filter plate, and air holes are also arranged on the surface of the filter rod head close to the air holes.

2. The adjustable filter head structure of an ABR reaction tank according to claim 1, Features: The filter rod tubes in adjacent rows of filter plates are arranged in a staggered manner.

3. The adjustable filter head structure of an ABR reaction tank according to claim 2, Features: The filter rod tubes in each row of filter plates are arranged at intervals.

4. An adjustable filter head structure for an ABR reaction tank according to claim 1, 2 or 3, Features: The upper end of the filter rod head located inside the embedded part is screwed and fixed with a fixing ring arranged in a groove made by the embedded part.

5. An adjustable filter head structure for an ABR reaction tank according to claim 1, 2 or 3, Features: The lower end portion of the filter rod head is located inside the lower end portion of the embedded component, or the lower end of the filter rod head is completely located inside the lower end portion of the embedded component.

6. The adjustable filter head structure of an ABR reaction tank according to claim 5, Features: The outer surface of the filter rod head located inside the embedded part is provided with an adjusting flap, and the embedded part and the adjusting flap are aligned with each other and an anti-dropping strip matched with the adjusting flap is provided.

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