Leachate sewage filtering grid

Abstract

The utility model discloses a percolate sewage filtering grid which comprises a box body (1) with an opening at the top, a horizontal water distribution tank (2) and an inclined grid frame (3) are arranged at the top of the box body (1), the upper end of the grid frame (3) is connected with the water outlet side of the water distribution tank (2), and a dry-wet separator connected with the box body (1) is arranged at the lower end of the grid frame (3); the grid frame (3) comprises a plurality of intercepting rods (4) extending obliquely and a plurality of connecting rods (5) extending horizontally, the intercepting rods (4) are located on the upper sides of the connecting rods (5), each connecting rod (5) is connected with all the intercepting rods (4), a drainage groove is formed between every two adjacent intercepting rods (4), and the distance between every two adjacent connecting rods (5) is larger than that between every two adjacent intercepting rods (4). The utility model has the advantages that the maintenance frequency is lower, and the labor intensity of workers can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of leachate sewage treatment equipment, in particular to a leachate sewage filtering grid. Background Art

[0002] In the pre-treatment process of leachate, a grid is used to filter out large suspended solids in order to reduce the difficulty of subsequent treatment. The grid is a steel mesh structure composed of crisscross steel plates. The longitudinal and transverse steel plates are on the same plane, which has the following defects:

[0003] 1) Some suspended matter is easily stuck in the holes of the grille and is difficult to be discharged with the water flow, which reduces the filtering effect and requires frequent cleaning and high maintenance frequency.

[0004] 2) The suspended matter on the grille also needs to be cleared away from time to time, but the suspended matter on the grille has a high water content and is heavy, resulting in a high labor intensity for the workers. Utility Model Content

[0005] The purpose of the utility model is to provide a leachate sewage filtering grid. The utility model has the advantages of low maintenance frequency and reduced labor intensity of workers.

[0006] The technical solution of the utility model is as follows: a leachate sewage filtering grid comprises a box body with an opening at the top, a horizontal water distribution trough and an inclined grid frame are arranged on the top of the box body, the upper end of the grid frame is connected to the water outlet side of the water distribution trough, and the lower end of the grid frame is provided with a dry-wet separator connected to the box body;

[0007] The grid frame includes a plurality of obliquely extending intercepting rods and a plurality of horizontally extending connecting rods, wherein the intercepting rods are located on the upper side of the connecting rods, each connecting rod connects all the intercepting rods, drainage grooves are formed between adjacent intercepting rods, and the distance between adjacent connecting rods is greater than the distance between adjacent intercepting rods.

[0008] In the aforementioned leachate sewage filtering grid, a drainage hole is provided at the bottom of the box body, a water guide plate connected to the box body is provided below the grid frame, the water guide plate is inclined, and the drainage hole is located on the water outlet side of the water guide plate.

[0009] In the aforementioned leachate sewage filtration grid, the dry-wet separator includes a barrel horizontally passing through the box body, a slag inlet trough is provided on the top of the barrel, the slag inlet trough is located on the lower side of the lower end of the grid frame, a screw is provided in the barrel, a motor connected to the screw is provided at one end of the barrel, a slag discharge port is provided at the other end of the barrel, a propulsion spiral plate and an extrusion spiral plate are provided on the screw, the propulsion spiral plate is close to the motor, the extrusion spiral plate is close to the slag discharge port, and the pitch of the propulsion spiral plate is greater than the pitch of the extrusion spiral plate.

[0010] In the aforementioned leachate sewage filtering grid, a feed pump is provided on the outside of the box body, and a water inlet connected to the feed pump is provided on the side wall of the water distribution trough.

[0011] In the aforementioned leachate sewage filtering grid, a water storage tank is provided in the box body, and a water spraying mechanism aimed at the grid plate is provided in the water storage tank.

[0012] In the aforementioned leachate sewage filtering grid, a water retaining cover is provided on the upper side of the grid frame.

[0013] Compared with the prior art, the utility model uses a plurality of interception rods to form an interception surface for suspended matter. The suspended matter slides down along the interception rods. During the sliding process, the suspended matter does not contact the connecting rods. The suspended matter slides down smoothly and is not easy to enter the holes of the grille, thereby reducing the maintenance frequency. By setting a water storage tank in the box body, and setting a water spraying mechanism in the water storage tank, a water flow is formed by using the filtered leachate to impact the grille frame from bottom to top. Not only can the suspended matter stuck in the grille be flushed out, further reducing the maintenance frequency, but also the suspended matter on the grille is promoted to slide down and enter the dry-wet separator. The suspended matter on the grille does not need to be cleaned frequently, reducing the labor intensity of workers. The suspended matter is collected by the dry-wet separator, and the suspended matter is discharged after squeezing out the water in the dry-wet separator. The discharged suspended matter has a low water content, a reduced weight, and is easy to transfer, which also reduces the labor intensity of workers. In summary, the utility model has the advantages of low maintenance frequency and reduced labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the utility model.

[0015] Figure 2 It is a right-side structural schematic diagram of the utility model.

[0016] Figure 3 It is a right view structural diagram of the dry-wet separator.

[0017] The markings in the attached drawings are: 1-box, 2-water distribution trough, 3-grid frame, 4-interceptor rod, 5-connecting rod, 6-drainage hole, 7-water guide plate, 8-barrel, 9-slag inlet trough, 10-screw, 11-slag discharge port, 12-pushing spiral plate, 13-extrusion spiral plate, 14-feed pump, 15-water storage tank, 16-water spraying mechanism, 17-water retaining cover, 18-motor, 19-water inlet. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0019] Example. Leachate sewage filter screen, such as Figure 1As shown, it includes a box body 1 with an opening on the top. The material of the box body 1 is 316 stainless steel. A horizontal water distribution trough 2 and an inclined grille frame 3 are provided on the top of the box body 1. The upper end of the grille frame 3 is connected to the water outlet side of the water distribution trough 2, and the lower end of the grille frame 3 is provided with a dry-wet separator fixed in the box body 1.

[0020] The grid frame 3 includes a plurality of obliquely extending intercepting rods 4 and a plurality of horizontally extending connecting rods 5, wherein the intercepting rods 4 are located on the upper side of the connecting rods 5, each connecting rod 5 connects all the intercepting rods 4, and a drainage groove is formed between adjacent intercepting rods 4, and the distance between adjacent connecting rods 5 is greater than the distance between adjacent intercepting rods 4. Both the connecting rods 5 and the intercepting rods 4 are made of polymer materials, have smooth surfaces, and are not easy to attach suspended matter, such as polyethylene or polypropylene. Such polymer materials have good corrosion resistance and aging resistance, and can adapt to the environment of leachate treatment.

[0021] The bottom of the box body 1 is provided with a drainage hole 6 , and a water guide plate 7 connected to the box body 1 is provided below the grille frame 3 . The water guide plate 7 is inclined, and the drainage hole 6 is located at the water outlet side of the water guide plate 7 .

[0022] The dry-wet separator includes a barrel 8 that passes horizontally through the box body 1, a slag inlet trough 9 is provided on the top of the barrel 8, and the slag inlet trough 9 is located on the lower side of the lower end of the grid frame 3. A screw 10 is provided in the barrel 8, and a motor 18 connected to the screw 10 is provided at one end of the barrel 8, and a slag discharge port 11 is provided at the other end of the barrel 8, and a valve can be provided at the slag discharge port 11. A propulsion spiral plate 12 and an extrusion spiral plate 13 are provided on the screw 10, the propulsion spiral plate 12 is close to the motor 18, and the extrusion spiral plate 13 is close to the slag discharge port 11, and the pitch of the propulsion spiral plate 12 is greater than the pitch of the extrusion spiral plate 13.

[0023] A feed pump 14 is disposed on the outer side of the box body 1 , and a water inlet 19 connected to the feed pump 14 is disposed on the side wall of the water distribution tank 2 .

[0024] The housing 1 is provided with a water storage tank 15, and a water spraying mechanism 16 aimed at the grid frame is provided in the water storage tank 15. The water spraying mechanism 16 is an existing device, including a water pump and a rotating spray head connected to the water pump. The water spraying mechanism 16 is started regularly, and water in the water storage tank 15 is drawn and sprayed through the rotating spray head, which can not only flush out the suspended matter existing in the grid frame 3 and stuck, but also promote the suspended matter on the grid frame 3 to slide down.

[0025] A water shield 17 is disposed on the upper side of the grille frame 3 . The cross section of the water shield 17 is U-shaped. Both sides of the water shield 17 are fixed to the box body 1 . The water shield 17 is used to reduce the splash range of the water flow sprayed by the water spraying mechanism 16 .

[0026] Working principle: The leachate is pumped by the feed pump 14, enters the water distribution tank 2 from the water inlet 19, and flows out from the lower side of the water distribution tank 2, that is, from Figure 1The leachate flows out from the right side of the trough 15 through the grid frame 3, and a part of the leachate enters the water storage tank 15. When the water in the water storage tank 15 is full, it overflows, and the rest of the leachate falls to the water guide plate 7 and is discharged from the drainage hole 6. The suspended matter stays on the grid frame 3, and under the impact of gravity and water flow, it slides down along the interception rod 4 and enters the barrel 8 through the slag inlet trough 9. When the suspended matter in the barrel 8 accumulates to a certain extent, the motor 18 is turned on, and the motor 18 drives the screw 10 to rotate. The propulsion spiral plate 12 and the extrusion spiral plate 13 on the screw 10 rotate synchronously. The suspended matter is first pushed by the propulsion spiral plate 12, and then pushed by the extrusion spiral plate 13 and squeezes out water in the extrusion spiral plate 13. The squeezed water is discharged from the slag inlet trough 9, or a water leakage hole located below the slag inlet trough 9 can be set at the bottom of the barrel 8 to discharge water. Finally, the squeezed suspended matter is discharged from the slag discharge port 11.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

Claims

1. Leachate sewage filter grid, characterized by: It comprises a box body (1) with an opening at the top, a horizontal water distribution trough (2) and an inclined grille frame (3) are provided on the top of the box body (1), the upper end of the grille frame (3) is connected to the water outlet side of the water distribution trough (2), and the lower end of the grille frame (3) is provided with a dry-wet separator connected to the box body (1); The grid frame (3) comprises a plurality of obliquely extending intercepting rods (4) and a plurality of horizontally extending connecting rods (5), wherein the intercepting rods (4) are located on the upper side of the connecting rods (5), each connecting rod (5) is connected to all the intercepting rods (4), drainage grooves are formed between adjacent intercepting rods (4), and the distance between adjacent connecting rods (5) is greater than the distance between adjacent intercepting rods (4).

2. The leachate sewage filtering grid according to claim 1, characterized in that: The bottom of the box body (1) is provided with a drainage hole (6), and a water guide plate (7) connected to the box body (1) is provided below the grille frame (3). The water guide plate (7) is arranged obliquely, and the drainage hole (6) is located on the water outlet side of the water guide plate (7).

3. The leachate sewage filtering grid according to claim 1, characterized in that: The dry-wet separator comprises a barrel (8) passing through a box body (1) horizontally, a slag inlet groove (9) is provided at the top of the barrel (8), and the slag inlet groove (9) is located at the lower side of the lower end of the grid frame (3), a screw (10) is provided in the barrel (8), a motor (18) connected to the screw (10) is provided at one end of the barrel (8), and a slag discharge port (11) is provided at the other end of the barrel (8), and a propulsion spiral plate (12) and an extrusion spiral plate (13) are provided on the screw (10), the propulsion spiral plate (12) is close to the motor (18), and the extrusion spiral plate (13) is close to the slag discharge port (11), and the pitch of the propulsion spiral plate (12) is greater than the pitch of the extrusion spiral plate (13).

4. The leachate sewage filtering grid according to claim 1, characterized in that: A feed pump (14) is provided on the outside of the box body (1), and a water inlet (19) connected to the feed pump (14) is provided on the side wall of the water distribution tank (2).

5. The leachate sewage filtering grid according to claim 1, characterized in that: A water storage tank (15) is provided in the box body (1), and a water spraying mechanism (16) aimed at the grille frame (3) is provided in the water storage tank (15).

6. The leachate sewage filtering grid according to claim 5, characterized in that: A water shield (17) is provided on the upper side of the grille frame (3).

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