A sedimentation tank for sewage treatment

Abstract

The utility model relates to the field of sewage treatment especially relates to a sedimentation tank for sewage treatment, the middle part of box body is installed with filter screen, and the upper wall of filter screen is in extrusion contact with scraper, and the scraper realizes horizontal motion through horizontal moving mechanism, and the lower part of filter screen is provided with mounting plate, the middle part of mounting plate is slidably installed with grating plate, and the upper part of grating plate is equipped with brush hair. In the utility model, the cylinder drives grating plate assembly reciprocating lifting to drive brush hair repeatedly through filter screen, and the brush hair realizes horizontal motion of a certain distance through wedge block guiding mechanism, thereby effectively and repeatedly contacting the impurities stuck in filter hole to realize the cleaning operation of impurities, avoids the impurities from being stuck in the filter hole of filter screen, and improves sewage treatment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sedimentation tank for wastewater treatment. Background Technology

[0002] Sedimentation tanks are the core physical treatment units in wastewater treatment. They remove suspended solids from water through gravity separation to achieve sedimentation.

[0003] In the existing technology, during the pretreatment stage of sewage treatment, sedimentation tanks are used to separate easily settleable substances in sewage. At the same time, they are equipped with filter plates to filter some larger impurities. However, in actual application, some impurities will be directly stuck or adhered to the filter mesh, resulting in a reduction in filtration efficiency. Although some sedimentation tanks in the existing technology are equipped with reciprocating scrapers or cleaning brushes to remove these impurities from the surface of the filter plates, they cannot quickly and effectively deal with those stuck impurities, and may even cause impurities to penetrate the filter mesh, which greatly reduces the efficiency of sewage treatment. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sedimentation tank for wastewater treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A sedimentation tank for wastewater treatment includes a tank body, a filter screen installed in the middle of the tank body, the upper wall of the filter screen being pressed against a scraper, the scraper being moved laterally by a lateral movement mechanism, and an installation plate provided below the filter screen, a grid plate being slidably installed in the middle of the installation plate, and brush bristles provided on the upper part of the grid plate. The mounting plate is lifted and lowered by a cylinder. Multiple wedge-shaped blocks are installed at both ends of the grid plate. The wedge-shaped blocks are limited and installed in the limiting groove opened on the outside of the mounting plate. The limiting groove is connected from top to bottom. An insert post is provided above the limiting groove and is installed on the bottom wall of the filter screen.

[0006] In addition, a preferred structure is that multiple cylinders are installed on the upper part of the housing, and the telescopic ends of the cylinders pass downward through the filter screen and are fixedly connected to the upper wall of the mounting plate.

[0007] Furthermore, in a preferred configuration, a transverse movement mechanism is installed on the outside of the housing, and the transverse movement mechanism is connected to the scraper drive.

[0008] Furthermore, a preferred structure is that a grid plate is installed inside the mounting plate, and in its natural state, one side of the outer wall of the grid plate is close to one side of the inner wall of the mounting plate.

[0009] In addition, a preferred structure is that the mounting plate has multiple limiting grooves on its exterior, and wedge blocks are installed in the limiting grooves for limiting. The wedge blocks are connected to the limiting grooves by springs.

[0010] Furthermore, in a preferred configuration, the inclined surface of the wedge block faces upward and is directly opposite the bottom end of the insert post.

[0011] The beneficial effects of this utility model are as follows: In this invention, the cylinder drives the grid plate assembly to reciprocate up and down, thereby causing the bristles to repeatedly pass through the filter screen. The bristles are guided by a wedge block mechanism to move laterally a certain distance, thereby effectively contacting the impurities stuck in the filter holes to clean them. This prevents impurities from getting stuck in the filter screen and improves wastewater treatment efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of a sedimentation tank for wastewater treatment proposed in this utility model; Figure 2 This is a partial structural diagram of the box body proposed in this utility model; Figure 3 This is a schematic diagram of the connection structure between the filter screen and the mounting plate proposed in this utility model; Figure 4 This is a schematic diagram of the internal structure of the mounting plate proposed in this utility model; Figure 5 This is a schematic diagram of the wedge-shaped block connection structure proposed in this utility model.

[0013] In the diagram: 1. Box body, 2. Horizontal movement mechanism, 21. Scraper, 3. Cylinder, 4. Filter screen, 41. Insert post, 5. Mounting plate, 51. Grille plate, 52. Brush bristles, 53. Limiting groove, 54. Wedge block, 55. Spring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-5 A sedimentation tank for wastewater treatment includes a tank body 1. A filter screen 4 is installed in the middle of the tank body 1. The upper wall of the filter screen 4 is in contact with a scraper 21. The scraper 21 moves laterally through a lateral movement mechanism 2. The scraper 21 moves laterally to scrape the impurities on the upper wall of the filter screen 4 to one side so that the operator can collect them.

[0016] A mounting plate 5 is provided below the filter screen 4, and a grid plate 51 is slidably installed in the middle of the mounting plate 5. The upper part of the grid plate 51 is provided with bristles 52.

[0017] Mounting plate 5 is lifted and lowered by cylinder 3; Multiple wedge blocks 54 are installed at both ends of the grid plate 51. The wedge blocks 54 are limited and installed in the limiting groove 53 opened on the outside of the mounting plate 5. The limiting groove 53 is connected from top to bottom. An insert post 41 is provided above the limiting groove 53 and is installed on the bottom wall of the filter screen 4.

[0018] Multiple cylinders 3 are installed on the upper part of the housing 1. The telescopic end of the cylinder 3 passes through the filter screen 4 downward and is fixedly connected to the upper wall of the mounting plate 5. The outer wall of the filter screen 4 has through holes to allow the telescopic rod of the cylinder 3 to pass through, which is easy to understand intuitively.

[0019] A transverse movement mechanism 2 is installed on the outside of the housing 1, and the transverse movement mechanism 2 is driven and connected to the scraper 51.

[0020] The mounting plate 5 has a grating plate 51 installed inside it. In its natural state, one side of the outer wall of the grating plate 51 is close to the inner wall of the mounting plate 5.

[0021] Multiple limiting grooves 53 are provided on the outside of the mounting plate 5. A wedge block 54 is installed in the limiting groove 53 for limiting. The wedge block 54 is connected to the limiting groove 53 by a spring 55.

[0022] The inclined surface of the wedge block 54 faces upward and is directly opposite the bottom end of the insert post 41.

[0023] In this embodiment, the cylinder 3 retracts to drive the mounting plate 5 connected thereto to move upward. The mounting plate 5 moves upward until the wedge block 54 set on its outer side presses against the insertion post 41 on the bottom wall of the filter screen 4. Under the guiding action of the inclined surface of the wedge block 54, the wedge block 54 is pressed and simultaneously drives the grid plate 51 to move laterally. At the same time, as the cylinder 3 moves downward, the spring 55 returns to its original position to drive the wedge block 54, i.e., the grille plate 51, to reset as a whole.

[0024] At the same time, as the mounting plate 5 approaches the filter screen 4, the bristles 52 on the grid plate 51 will pass through the filter holes of the filter screen 4 and move laterally to a certain extent. When the bristles 52 pass through the filter screen 4, several bristles will rub and squeeze against the hole wall, and press and clean the impurities stuck and attached in the filter holes.

[0025] As the cylinder 3 reciprocates, the bristles 52 repeatedly pass through the filter screen 4 and move laterally, effectively pushing the impurities stuck in the filter holes upwards, and collecting and removing them in conjunction with the lateral movement of the scraper 21.

[0026] The specific sedimentation principle of box 1, i.e. sedimentation box 1, is based on existing technology and will not be explained here.

[0027] The cylinder 3 drives the grille assembly to move up and down repeatedly, causing the bristles 52 to repeatedly pass through the filter screen 4. The bristles 52 repeatedly contact the impurities stuck in the filter holes to clean the impurities.

[0028] Among them, the transverse movement mechanism 2 is a very common and basic type of equipment or component in this field. It is a mechanical system used to realize the transverse linear movement of an object (scraper 21) in a horizontal plane. It can be a ball screw drive system, a synchronous belt drive system, a chain drive, etc. The scraper 21 is moved laterally by the transverse mechanism 2 to perform the scraping action. The specific internal structure and principle of the transverse mechanism 2 that are not explained in detail above are all conventional configurations in the field and are common knowledge to those skilled in the art, and will not be explained further.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sedimentation tank for wastewater treatment, comprising a tank body (1), characterized in that, A filter screen (4) is installed in the middle of the box (1). The upper wall of the filter screen (4) is pressed against the scraper (21). The scraper (21) moves laterally through the lateral movement mechanism (2). A mounting plate (5) is provided below the filter screen (4). A grid plate (51) is slidably installed in the middle of the mounting plate (5). Brush bristles (52) are provided on the upper part of the grid plate (51). The mounting plate (5) is lifted and lowered by a cylinder (3); Multiple wedge blocks (54) are installed at both ends of the grid plate (51). The wedge blocks (54) are installed in the limiting groove (53) opened on the outside of the mounting plate (5). The limiting groove (53) is connected from top to bottom. An insert post (41) is provided above the limiting groove (53). The insert post (41) is installed on the bottom wall of the filter screen (4).

2. A sedimentation tank for wastewater treatment according to claim 1, characterized in that, Multiple cylinders (3) are installed on the upper part of the housing (1). The telescopic ends of the cylinders (3) pass through the filter screen (4) and are fixedly connected to the upper wall of the mounting plate (5).

3. A sedimentation tank for wastewater treatment according to claim 1, characterized in that, A transverse mechanism (2) is installed on the outside of the box (1), and the transverse mechanism (2) is driven to connect with the scraper (21).

4. A sedimentation tank for wastewater treatment according to claim 1, characterized in that, The mounting plate (5) is equipped with a grating plate (51) inside. In its natural state, one side of the outer wall of the grating plate (51) is close to one side of the inner wall of the mounting plate (5).

5. A sedimentation tank for wastewater treatment according to claim 1, characterized in that, The mounting plate (5) has multiple limiting grooves (53) on its outside. A wedge block (54) is installed in the limiting groove (53) for limiting. The wedge block (54) is connected to the limiting groove (53) by a spring (55).

6. A sedimentation tank for wastewater treatment according to claim 5, characterized in that, The inclined surface of the wedge block (54) faces upward and is directly opposite the bottom end of the insert (41).

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