Fabricated sewage treatment tank body

Abstract

The invention relates to the technical field of sewage treatment tanks, in particular to an assembled sewage treatment tank. Comprising a plurality of stand columns, a plurality of corrugated plates are arranged between every two adjacent stand columns, each corrugated plate comprises a top column, the top column is fixedly connected with two side columns, the two side columns are jointly and fixedly connected with a bottom column, the top column is fixedly connected with a baffle, the side columns and the bottom column are fixedly connected with the baffle, and the top column is fixedly connected with a mounting block; and the limiting blocks are slidably connected to the adjacent mounting blocks, and the limiting blocks are used for limiting the adjacent bottom columns. The top columns and the bottom columns on the lower side are limited through the limiting blocks, so that pre-connection between the upper corrugated board and the lower corrugated board is achieved, bolt reinforcement between the two subsequent corrugated boards is facilitated, the corrugated board on the upper side does not need to be supported, the device is more convenient to assemble, and the installation time of the device is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment tank bodies, and in particular to an assembled sewage treatment tank body. Background Art

[0002] An assembled sewage treatment tank is a prefabricated structure that is manufactured in a factory according to specific designs and standards, and then transported to the construction site for assembly. This type of treatment tank is usually used for the collection, storage and preliminary treatment of sewage or wastewater. Assembled sewage treatment tanks are suitable for a variety of occasions, including but not limited to residential areas, commercial buildings, industrial parks, rural areas, and temporary or emergency sewage treatment needs. In addition, they can also integrate other sewage treatment technologies, such as biological treatment, chemical treatment or physical treatment units, to achieve a more comprehensive and effective sewage treatment effect.

[0003] When assembling the existing assembled sewage treatment tank, the base is first installed, then several columns are installed, and then several corrugated boards are installed between two adjacent columns. The corrugated boards are installed from bottom to top, but when the upper corrugated boards are installed, the corrugated boards need to be supported so that the upper and lower corrugated boards can be connected with bolts. This makes the existing assembled sewage treatment tank time-consuming and labor-intensive to assemble, and the assembly efficiency is low. In addition, after the existing assembled water tank is installed and connected, the entire tank body is not strong enough and is easily deformed, resulting in water leakage in the tank body, thereby affecting the use effect. Summary of the invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides an assembled sewage treatment tank body.

[0005] The technical solution of the present invention is: an assembled sewage treatment tank body, comprising: There are several upright posts, the upright posts are distributed in a rectangular shape, the upright posts are provided with reinforcing ribs, several corrugated plates are provided between two adjacent upright posts, the corrugated plates include a top post, the top post is fixedly connected to two side posts, the two side posts are commonly fixedly connected to a bottom post, the top post is fixedly connected to a baffle, the side posts and the bottom post are both fixedly connected to the baffle, and the top post is fixedly connected to several mounting blocks; The number of the limit blocks is the same as that of the mounting blocks. The limit blocks are slidably connected to the adjacent mounting blocks. A first spring is provided between the limit blocks and the mounting blocks. The limit blocks are used to limit the adjacent base columns.

[0006] Furthermore, the baffle is provided with a plurality of concave-convex ribs for improving the strength of the baffle, and the concave-convex ribs include segmented and continuous types, and the form of a single concave-convex rib includes U-shape and V-shape.

[0007] Furthermore, it also includes: The number of the sliding members is consistent with the number of the mounting blocks. The sliding members are slidably connected to the adjacent mounting blocks, and the sliding members are fixedly connected to the adjacent limiting blocks.

[0008] Furthermore, it also includes: The number of the limiting columns is consistent with the number of the mounting blocks. The limiting columns are slidably connected to the adjacent mounting blocks. A second spring is arranged between the limiting columns and the mounting blocks. The limiting blocks are provided with grooves. The limiting columns are used to limit the limiting blocks through the grooves on the limiting blocks.

[0009] Furthermore, the top column is provided with a plurality of first waterstop lines, and the bottom column is provided with a plurality of second waterstop lines. Rubber strips are provided at the first waterstop lines and the second waterstop lines for sealing between the top column and the bottom column.

[0010] Furthermore, it also includes: There are several sliding rings, the base column is provided with several first sliding grooves, the sliding ring is slidably connected to the adjacent first sliding grooves, a tension spring is provided between the sliding ring and the base column, the base column is provided with several second sliding grooves, the number of the second sliding grooves is consistent with the number of the first sliding grooves, and the second sliding grooves are connected to the adjacent first sliding grooves.

[0011] Furthermore, it also includes: The number of the first sliding plates is the same as the number of the second sliding grooves, and the first sliding plates are slidably connected to adjacent second sliding grooves.

[0012] Furthermore, it also includes: The first tie bars have a plurality of groups, each group of the first tie bars has two first tie bars, two opposite corrugated plates form a group, each group of the first tie bars is hinged to one of the two groups of corrugated plates located on the same layer, the first tie bars are fixedly connected to a plurality of second tie bars, and the second tie bars are hinged to the adjacent bottom columns.

[0013] Furthermore, it also includes: Shells, the number of which is half the number of the first tie bars, the shells are fixedly connected to one of the first tie bars in the same group, and another of the first tie bars is slidably connected to the shells; The number of the second sliding plates is consistent with that of the shell, the shell is provided with a first cavity, the second sliding plates are slidably connected in the adjacent first cavity, and the second sliding plates are fixedly connected to the adjacent first tie bars.

[0014] Furthermore, it also includes: The number of the third sliding plates is consistent with that of the shell, the shell is provided with a second cavity, the third sliding plates are slidably connected in the adjacent second cavity, and the second cavity is communicated with the adjacent first cavity.

[0015] In the present invention, the corrugated board may be in a wave shape or a trapezoidal shape, and the corrugated board is integrally formed.

[0016] In the present invention, the tank body and the base are connected by bolts, and the base and the steel plate are welded or directly poured with concrete.

[0017] In the present invention, the top of the pool body is generally open, and if there is a requirement for deodorization, an arc plate is added to seal the top.

[0018] In the present invention, upper and lower adjacent top columns and bottom columns may be directly connected by bolts, or may be connected by bolts in combination with an adjusting mechanism.

[0019] In the present invention, a plurality of first water stop lines and a plurality of second water stop lines may be provided.

[0020] In the present invention, according to actual process requirements, the boxes can be assembled horizontally and vertically to form a larger box.

[0021] The beneficial effect produced by adopting the above technical scheme is as follows: the present invention limits the top column and the bottom column on the lower side through the limit block, thereby realizing the pre-connection between the upper and lower corrugated plates, so as to facilitate the subsequent bolt reinforcement between the two corrugated plates, and there is no need to support the upper corrugated plate, which makes the assembly of the device more convenient and shortens the installation time of the device.

[0022] The baffle is provided with a plurality of concave and convex ribs to enhance the structural strength of the baffle so that the baffle can withstand greater water pressure, thereby enabling the baffle to have a higher structural strength when the same amount of raw materials is used.

[0023] By allowing water pressure to act on the first sliding plate, the pressure between the top column and the upper bottom column is changed, thereby adjusting the sealing effect between the top column and the upper bottom column according to the water pressure, while ensuring the sealing and reducing the pressure on the rubber strip, thereby extending the service life of the rubber strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 The three-dimensional structure of the corrugated board of the present invention is shown in FIG. Figure 1 ; Figure 3 for Figure 1 The enlarged view of point A in the middle; Figure 4 It is a schematic diagram of the three-dimensional structure of the mounting block and the limiting block of the present invention; Figure 5 It is a three-dimensional structural cross-sectional view of the top column and the bottom column of the present invention; Figure 6 The three-dimensional structure of the first water stop line and the second water stop line of the present invention is shown in FIG. Figure 1 ; Figure 7 It is a schematic diagram of the three-dimensional structure of the first tie rod and the second tie rod of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the second sliding plate and the third sliding plate of the present invention; Fig. 9 The three-dimensional structure of the corrugated board of the present invention is shown in FIG. Figure 2 ; Fig.10 The three-dimensional structure of the first water stop line and the second water stop line of the present invention is shown in FIG. Figure 2 .

[0025] Figure numbers: 1-column, 2-reinforcement rib, 3-corrugated board, 31-top column, 311-first water stop line, 32-side column, 33-bottom column, 331-second water stop line, 332-first slide groove, 333-second slide groove, 34-baffle, 341-concave and convex rib, 4-mounting block, 5-limiting block, 6-sliding member, 7-limiting column, 8-sliding ring, 9-first sliding plate, 10-first tensioning rib, 11-second tensioning rib, 12-shell, 121-first cavity, 122-second cavity, 13-second sliding plate, 14-third sliding plate, 15-convex rib. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the attached drawings are not included in the scope of protection of the present invention. Figure 1 The device is in an inverted state in the figure, so as to show the internal parts of the device. When actually using the device, just turn the device upside down. Example 1

[0027] An assembled sewage treatment tank body, such as Figure 1-Figure 5As shown, it includes a plurality of columns 1, which are distributed in a rectangular shape, and the columns 1 are provided with reinforcing ribs 2. A plurality of corrugated boards 3 are provided between two adjacent columns 1. The corrugated boards 3 include a top column 31, which is fixedly connected to two side columns 32, and the two side columns 32 are fixedly provided with a bottom column 33. The top column 31 is fixedly connected to a baffle 34, and the side columns 32 and the bottom columns 33 are both fixedly connected to the baffle 34. The top column 31 is fixedly connected to a plurality of mounting blocks 4; the number of limit blocks 5 is the same as the number of mounting blocks 4, and the limit blocks 5 are slidably connected to the adjacent mounting blocks 4. A first spring is provided between the limit blocks 5 and the mounting blocks 4, and the limit blocks 5 are used to limit the adjacent bottom columns 33. The baffle 34 is provided with a plurality of concave and convex ribs 341, which are used to improve the strength of the baffle 34.

[0028] In the above scheme, the purpose is to pre-connect two adjacent corrugated boards 3 to increase the assembly speed of the device. The figure shows two corrugated boards 3 between two adjacent columns 1 for reference. In actual application, the number of corrugated boards 3 can be adjusted as needed. The bottom column 33 is provided with evenly distributed ribs to improve the compressive strength of the bottom column 33. The side column 32 is made of steel plate to provide support. The concave and convex ribs 341 on the baffle 34 are segmented.

[0029] Further, such as Figure 3-Figure 5 As shown, it also includes: sliding members 6, the number of which is consistent with the number of mounting blocks 4, the sliding members 6 are slidably connected to adjacent mounting blocks 4, and the sliding members 6 are fixedly connected to adjacent limiting blocks 5.

[0030] In the above scheme, the limiting block 5 is intended to release the limiting effect on the adjacent top column 31 and the adjacent bottom column 33. The sliding member 6 is composed of a round rod and a disc, and the adjacent limiting block 5 is moved by pulling the sliding member 6.

[0031] Further, such as Figure 4 and Figure 5 As shown, it also includes: limiting columns 7, the number of which is consistent with the number of mounting blocks 4, the limiting columns 7 are slidably connected to the adjacent mounting blocks 4, a second spring is arranged between the limiting columns 7 and the mounting blocks 4, the limiting blocks 5 are provided with grooves, and the limiting columns 7 are used to limit the limiting blocks 5 through the grooves on the limiting blocks.

[0032] In the above scheme, the position of the limit block 5 is fixed so that the device can be disassembled. The limit column 7 is composed of a round rod and a hemisphere. The second spring between the limit column 7 and the mounting block 4 is initially in a compressed state to push the limit column 7 to insert into the groove on the limit block 5. The elastic coefficient of the second spring between the limit column 7 and the mounting block 4 is greater than the elastic coefficient of the first spring between the limit block 5 and the mounting block 4.

[0033] Working process: before using the device, first assemble it, install the column 1 first, then install the corrugated board 3, connect the corrugated board 3 with the two adjacent columns 1, and then continue to splice the upper corrugated board 3 upwards. At this time, control the upper corrugated board 3 to move downward, the top column 31 drives the adjacent mounting block 4 to move, and the mounting block 4 drives the limit block 5 to move. The limit block 5 contacts the bottom column 33 on the lower side, and then the limit block 5 continues to move, and the bottom column 33 squeezes the limit block 5 to move, and the limit block 5 compresses the adjacent first spring. When the top column 31 is fitted with the upper bottom column 33, the limit block 5 is reset under the action of the adjacent first spring, thereby connecting the top column 31 with the upper bottom column 33. At this time, the pre-fixation of the corrugated board 3 is completed, and then bolts or the like can be used to connect the two adjacent corrugated boards 3 and the corrugated board 3 with the two adjacent columns 1, thereby realizing the rapid assembly of the device.

[0034] When disassembling the device, first drain the sewage in the device, then remove the bolts on the corrugated board 3, and then pull the sliding member 6, which drives the adjacent limit block 5 to move. At this time, the distance moved by the limit block 5 is farther than the distance when the bottom column 33 squeezes it to move, so that the groove on the limit block 5 is aligned with the adjacent limit column 7, and the limit column 7 is inserted into it under the action of the adjacent second spring, so as to limit the limit block 5. When the limit blocks 5 on one corrugated board 3 are all separated from the bottom column 33 on the lower side, the corrugated board 3 can be removed, so that the device can be quickly disassembled and the efficiency is improved. Then the column 1 and the corrugated board 3 on the bottom layer can be removed.

[0035] Further, such as Figure 6 As shown, the top column 31 is provided with a first water stop line 311 , and the bottom column 33 is provided with a second water stop line 331 . Both the first water stop line 311 and the second water stop line 331 are provided with rubber strips for sealing between the top column 31 and the bottom column 33 .

[0036] In the above scheme, the sealing between the top column 31 and the bottom column 33 is improved. The first water stop line 311 on the top column 31 has one, and the second water stop line 331 on the bottom column 33 has two. The rubber strips on the first water stop line 311 and the second water stop line 331 are used to improve the sealing effect.

[0037] Further, such as Figure 5 As shown, it also includes: a sliding ring 8, which has several pieces, a bottom column 33 is provided with several first sliding grooves 332, the sliding ring 8 is slidably connected to the adjacent first sliding grooves 332, a tension spring is provided between the sliding ring 8 and the bottom column 33, the bottom column 33 is provided with several second sliding grooves 333, the number of the second sliding grooves 333 is consistent with the number of the first sliding grooves 332, and the second sliding grooves 333 are connected to the adjacent first sliding grooves 332.

[0038] Further, such as Figure 5As shown, it also includes: first sliding plates 9 , the number of which is consistent with the number of the second sliding grooves 333 , and the first sliding plates 9 are slidably connected to the adjacent second sliding grooves 333 .

[0039] In the above scheme, the pressure between the top column 31 and the bottom column 33 is adjusted. A seal is provided between the sliding ring 8 and the bottom column 33, and the seal can be a rubber ring, etc. A seal is provided between the first sliding plate 9 and the bottom column 33, and the second chute 333 is connected to the adjacent first chute 332 through a pipeline. The first chute 332 and the second chute 333 and the pipeline between the two are filled with liquid for transmission, such as hydraulic oil, etc. The sewage pressure in the device acts on the first sliding plate 9, and the first sliding plate 9 squeezes the liquid in the second chute 333 and the first chute 332, so that the water pressure acts on the sliding ring 8, so as to change the pressure on the sliding ring 8 according to the water pressure, and then change the pressure between the top column 31 and the bottom column 33, so that the rubber strip between the top column 31 and the bottom column 33 located in the shallower part of the water is subjected to less pressure while ensuring sealing, thereby extending its service life.

[0040] Further, such as Figure 1 and Figure 7 As shown, it also includes: first tie bars 10, which have several groups, each group of first tie bars 10 has two in number, two opposite corrugated plates 3 form a group, each group of first tie bars 10 is hinged to one of the two groups of corrugated plates 3 located on the same layer, the first tie bars 10 are fixedly connected to several second tie bars 11, and the second tie bars 11 are hinged to the adjacent bottom columns 33.

[0041] In the above scheme, the maximum pressure that the corrugated board 3 can withstand is increased. The first tie rod 10 and the second tie rod 11 are both made of stainless steel tubes to increase their multi-directional tensile strength, and the second tie rod 11 is connected to the first tie rod 10 by welding.

[0042] Further, such as Figure 7 and Figure 8 As shown, it also includes: a shell 12, the number of which is half the number of the first tie bars 10, the shell 12 is fixedly connected to one of the first tie bars 10 in the same group, and the other first tie bar 10 is slidably connected to the shell 12; a second sliding plate 13, the number of which is consistent with the number of the shell 12, the shell 12 is provided with a first cavity 121, the second sliding plate 13 is slidably connected to the adjacent first cavity 121, and the second sliding plate 13 is fixedly connected to the adjacent first tie bar 10.

[0043] Further, such as Figure 8 As shown, it also includes: third sliding plates 14, the number of which is consistent with the number of the shell 12, the shell 12 is provided with a second cavity 122, the third sliding plate 14 is slidably connected in the adjacent second cavity 122, and the second cavity 122 is connected to the adjacent first cavity 121.

[0044] In the above scheme, the purpose is to adjust the tension of the first tie rod 10 on the corrugated board 3, and to extend its service life while ensuring the compressive resistance of the corrugated board 3. A number of blocks are arranged in the shell 12 to block the second sliding plate 13 and prevent the second sliding plate 13 from crossing the connection between the first cavity 121 and the second cavity 122. The second cavity 122 is connected to the adjacent first cavity 121. The second cavity 122 and the first cavity 121 are both filled with liquid for transmission. The sewage in the device squeezes the third sliding plate 14, and the third sliding plate 14 moves, pushing the liquid in the second cavity 122 into the first cavity 121. The liquid pressure acts on the second sliding plate 13 and one side of the shell 12, so that the two first tie rods 10 generate opposite tension to offset part of the pressure on the corrugated board 3. When the water depth is different, the tension generated by the two first tie rods 10 is different.

[0045] Working process: when the device is assembled, the bolts and nuts squeeze the adjacent top columns 31 and the adjacent sliding rings 8 respectively. After the bottom plate 1, the column 1 and the corrugated plate 3 are assembled, the first tie rod 10 and the second tie rod 11 are connected to the adjacent corrugated plate 3. Pins can be used for connection. When the connection is completed and sewage is added, the water level in the device gradually rises and first covers the first sliding plate 9 on the lower side, and then covers the first sliding plate 9 on the upper side. When the water depth is different, the sewage in the device has different pressures at different heights. Therefore, the sealing demand between the top column 31 and the lower bottom column 33 is insufficient. At this time, the water pressure pushes the first sliding plate 9 to move, and the first sliding plate 9 The liquid in the adjacent second slide groove 333 is pressed into the adjacent first slide groove 332, and the pressure in the first slide groove 332 increases, pushing the sliding ring 8 to move upward. The sliding ring 8 squeezes the nut, so that the nut drives the bolt to move upward, causing the bolt to increase the pressure on the top column 31, and then the pressure between the top column 31 and the upper bottom column 33 is increased, thereby improving the sealing between the two. The first sliding plate 9 located closer to the water surface is subjected to less water pressure, so the corresponding pressure between the top column 31 and the upper bottom column 33 is also smaller, thereby ensuring the sealing while reducing the pressure on the rubber strip, thereby extending the service life of the rubber strip.

[0046] When the water surface in the device is above the third sliding plate 14, the water pressure pushes the third sliding plate 14, and the third sliding plate 14 presses the liquid in the adjacent second cavity 122 into the first cavity 121. The increase in liquid in the first cavity 121 pushes the second sliding plate 13 to move, and the second sliding plate 13 pulls the adjacent first reinforcing bars 10, thereby increasing the tension between the two adjacent first reinforcing bars 10. When the water depth is different, the water pressure on the third sliding plate 14 is different, so that the first reinforcing bars 10 located at a deeper depth exert a greater pulling force on the bottom column 33 to prevent the corrugated board 3 at a deeper depth from being deformed outward due to excessive water pressure, and the first reinforcing bars 10 located at a shallower depth exert a smaller pulling force on the bottom column 33 to prevent the corrugated board 3 from being stressed and shortening its service life. When the device is disassembled after use, the water in the device is drained first, and then the pins between the first reinforcing bars 10 and the second reinforcing bars 11 and the adjacent corrugated board 3 are pulled out, so that the first reinforcing bars 10 and the second reinforcing bars 11 are removed, and then the remaining parts can be dismantled. Example 2

[0047] Compared with Example 1, the difference is that Fig. 9 and Fig.10 As shown, the concave-convex ribs 341 on the baffle 34 are continuous, and the form of a single concave-convex rib 341 includes a U-shape and a V-shape ( Fig. 9 The U-shape is shown in the figure), the first water stop line 311 on the top column 31 has two lines, the second water stop line 331 on the bottom column 33 has two lines, and at the same time, convex ribs 15 are added on the left and right sides of the top column 31 to improve the structural strength of the top column 31.

[0048] The present invention provides a thought and method. There are many methods and ways to implement the technical solution. The above is only the preferred implementation mode of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. An assembled sewage treatment tank, characterized in that it comprises: A plurality of upright posts (1), wherein the upright posts (1) are arranged in a rectangular shape, the upright posts (1) are provided with reinforcing ribs (2), a plurality of corrugated plates (3) are provided between two adjacent upright posts (1), the corrugated plates (3) include a top post (31), the top post (31) is fixedly connected to two side posts (32), the two side posts (32) are commonly fixedly connected to a bottom post (33), the top post (31) is fixedly connected to a baffle (34), the side posts (32) and the bottom post (33) are both fixedly connected to the baffle (34), and the top post (31) is fixedly connected to a plurality of mounting blocks (4); The number of the limit blocks (5) is the same as the number of the mounting blocks (4); the limit blocks (5) are slidably connected to adjacent mounting blocks (4); a first spring is provided between the limit blocks (5) and the mounting blocks (4); and the limit blocks (5) are used to limit the adjacent bottom columns (33).

2. An assembled sewage treatment tank according to claim 1, characterized in that: The baffle plate (34) is provided with a plurality of concave-convex ribs (341) for improving the strength of the baffle plate (34); the concave-convex ribs (341) include segmented and continuous types, and the form of a single concave-convex rib (341) includes a U-shape and a V-shape.

3. The assembled sewage treatment tank according to claim 1, characterized in that: Also included are: The number of the sliding members (6) is the same as the number of the mounting blocks (4); the sliding members (6) are slidably connected to the adjacent mounting blocks (4); and the sliding members (6) are fixedly connected to the adjacent limiting blocks (5).

4. The assembled sewage treatment tank according to claim 3 is characterized in that: Also included are: The number of the limiting columns (7) is the same as the number of the mounting blocks (4); the limiting columns (7) are slidably connected to adjacent mounting blocks (4); a second spring is provided between the limiting columns (7) and the mounting blocks (4); the limiting blocks (5) are provided with grooves; the limiting columns (7) are used to limit the limiting blocks (5) through the grooves on the limiting blocks (5).

5. The assembled sewage treatment tank according to claim 1 is characterized in that: The top column (31) is provided with a plurality of first water stop lines (311), and the bottom column (33) is provided with a plurality of second water stop lines (331), and rubber strips are provided at the first water stop lines (311) and the second water stop lines (331) for sealing between the top column (31) and the bottom column (33).

6. The assembled sewage treatment tank according to claim 5, characterized in that: Also included are: The sliding ring (8) has a plurality of first sliding grooves (332), the bottom column (33) is provided with a plurality of first sliding grooves (332), the sliding ring (8) is slidably connected to adjacent first sliding grooves (332), a tension spring is provided between the sliding ring (8) and the bottom column (33), the bottom column (33) is provided with a plurality of second sliding grooves (333), the number of the second sliding grooves (333) is the same as the number of the first sliding grooves (332), and the second sliding grooves (333) are connected to the adjacent first sliding grooves (332).

7. An assembled sewage treatment tank according to claim 6, characterized in that: Also included are: The number of the first sliding plates (9) is the same as the number of the second sliding grooves (333), and the first sliding plates (9) are slidably connected to adjacent second sliding grooves (333).

8. The assembled sewage treatment tank according to claim 1, characterized in that: Also included are: The first tie bars (10) have a plurality of groups, each group of the first tie bars (10) has two members, two opposite corrugated plates (3) form a group, each group of the first tie bars (10) is hinged to one of the two groups of corrugated plates (3) located on the same layer, the first tie bars (10) are fixedly connected to a plurality of second tie bars (11), and the second tie bars (11) are hinged to the adjacent bottom columns (33).

9. An assembled sewage treatment tank according to claim 8, characterized in that: Also included are: Shells (12), the number of which is half the number of the first tie bars (10), the shells (12) being fixedly connected to one of the first tie bars (10) in the same group, and the other first tie bar (10) being slidably connected to the shells (12); The number of the second sliding plates (13) is the same as the number of the shell (12), the shell (12) is provided with a first cavity (121), the second sliding plates (13) are slidably connected in the adjacent first cavity (121), and the second sliding plates (13) are fixedly connected to the adjacent first tie bars (10).

10. An assembled sewage treatment tank according to claim 9, characterized in that: Also included are: The number of the third sliding plates (14) is the same as the number of the shell (12); the shell (12) is provided with a second cavity (122); the third sliding plates (14) are slidably connected in an adjacent second cavity (122); and the second cavity (122) is communicated with the adjacent first cavity (121).

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