Unpowered filtering device for tunnel wastewater

Abstract

The utility model relates to a wastewater filtering device, aiming at solving the technical problem that most of the existing filtering means are power filtering or horizontal filters, so that the energy consumption is high. The utility model provides an unpowered filtering device for tunnel wastewater. The unpowered filtering device comprises a shell and a mud bucket arranged at the bottom of the shell, an annular filter screen is arranged in the middle of the shell, and the bottom of the filter screen is connected with the mud bucket; a tunnel wastewater area is formed between the inner wall of the filter screen and the inner wall of the mud bucket; a clear water area is formed among the outer wall of the filter screen, the inner wall of the mud bucket and the inner wall of the shell; a plurality of water distribution pipe transverse pipes are arranged above the shell, one end of each water distribution pipe transverse pipe is blocked, the other end of each water distribution pipe transverse pipe is provided with a first manual valve, and one end, away from the water distribution pipe transverse pipes, of each first manual valve is provided with a tunnel wastewater inlet pipe and a flushing pipe; the water distribution pipe transverse pipe is provided with two water distribution pipe vertical pipes with different lengths, each water distribution pipe vertical pipe is provided with two rows of uniformly distributed circular holes, and the opening directions of the circular holes all point to the filter screen; a first sludge discharge pipe is arranged at the bottom of the sludge bucket; a first water outlet pipe is arranged on the side of the shell.

Description

Technical Field

[0001] The utility model relates to a wastewater filtering device, in particular to an unpowered filtering device for tunnel wastewater. Background Art

[0002] The removal of suspended solids in tunnel wastewater is the main purpose of tunnel wastewater treatment. The suspended solids content in each tunnel construction is different due to different geology, construction technology, construction section, etc. After coagulation and sedimentation, some wastewater can be directly discharged in compliance with the standards, while others still need filtration treatment.

[0003] At present, tunnel wastewater filtration methods are mostly powered filtration or horizontal filters, which consume a lot of energy, occupy a large area, and have poor economy. Utility Model Content

[0004] The utility model aims to solve the technical problem that most existing filtering means are powered filtering or horizontal filters, which consume a lot of energy, and provide a tunnel wastewater unpowered filtering device.

[0005] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:

[0006] A tunnel wastewater unpowered filtering device comprises a shell in a cylindrical structure and a mud bucket arranged at the bottom of the shell, wherein the bottom of the mud bucket is provided with a plurality of evenly distributed supporting legs;

[0007] A ring-shaped filter screen is provided in the middle of the shell, and the bottom of the filter screen is connected to the mud bucket; a tunnel wastewater area is formed between the inner wall of the filter screen and the inner wall of the mud bucket, and a clean water area is formed between the outer wall of the filter screen, the inner wall of the mud bucket and the inner wall of the shell;

[0008] A plurality of water distribution pipe transverse pipes are arranged above the shell, one end of the water distribution pipe transverse pipe is blocked, and the other end is provided with a first manual valve, and the end of the first manual valve away from the water distribution pipe transverse pipe is provided with a tunnel wastewater inlet pipe and a flushing pipe;

[0009] The water distribution pipe horizontal pipe is provided with two water distribution pipe vertical pipes of different lengths, and the water distribution pipe vertical pipe is provided with two rows of evenly distributed circular holes, and the opening directions of the circular holes are all directed to the filter screen;

[0010] A first mud discharge pipe is provided at the bottom of the mud hopper, one end of which passes through the mud hopper and extends to the bottom of the tunnel wastewater area for discharging mud and water;

[0011] A first water outlet pipe is provided on the side of the shell, one end of which penetrates the shell and extends to the bottom of the clean water area for discharging filtered clean water.

[0012] Furthermore, the lengths of the two vertical pipes of the water distribution pipes are respectively 3 / 4 and 1 / 2 of the height of the filter screen.

[0013] Furthermore, the diameter of the circular holes is 30 mm, and the angle between the two rows of circular holes is 45°.

[0014] Furthermore, the filter screen is made of stainless steel, and the pore size of the filter screen is 20-100 μm.

[0015] Furthermore, a suspended matter monitoring probe located in the clean water area is provided in the shell for monitoring the concentration of suspended matter in the clean water area.

[0016] Furthermore, three evenly distributed hanging rings are provided on the top of the shell.

[0017] Furthermore, a first electric valve is provided on the tunnel wastewater inlet pipe; a second electric valve is provided on the flushing pipe;

[0018] One end of the first water outlet pipe away from the shell is connected to a second water outlet pipe through a second manual valve;

[0019] A third manual valve, a third electric valve and a second mud discharge pipe are sequentially arranged at one end of the first mud discharge pipe away from the mud bucket.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. The unpowered filtering device for tunnel wastewater provided by the utility model adopts a vertical structure and realizes unpowered filtering through the height difference of water inlet and outlet, which saves equipment investment cost and greatly reduces energy consumption and land occupation; and the length of the vertical pipe of the water distribution pipe is set to different lengths, which can reasonably utilize the entire filter screen and avoid excessive load at the bottom of the filter screen, causing sludge accumulation under the action of gravity;

[0022] 2. The unpowered filtering device for tunnel wastewater provided by the utility model monitors the concentration of suspended matter in the clean water area by setting a suspended matter monitoring probe. The first electric valve can be closed, and the second electric valve and the third electric valve can be started. Clean water can be sprayed from the circular holes on the horizontal pipe and the vertical pipe of the water distribution pipe to the inner wall of the filter screen through the flushing pipe to flush the filter screen, thereby reducing the amount of manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A top view of

[0025] Figure 3 It is a schematic cross-sectional view of the vertical pipe of the water distribution pipe at the circular hole in the embodiment of the utility model.

[0026] Explanation of the reference numerals: 1-shell, 2-mud bucket, 3-leg, 4-lifting ring, 5-filter screen, 6-tunnel wastewater inlet pipe, 7-first electric valve, 8-flushing pipe, 9-second electric valve, 10-first manual valve, 11-cross pipe of water distribution pipe, 12-vertical pipe of water distribution pipe, 13-first water outlet pipe, 14-second manual valve, 15-second water outlet pipe, 16-first mud discharge pipe, 17-third manual valve, 18-third electric valve, 19-second mud discharge pipe, 20-suspended matter monitoring probe. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1 As shown, a tunnel wastewater unpowered filtering device includes a shell 1 with a cylindrical structure, and a mud bucket 2 arranged at the bottom of the shell 1, and four evenly distributed supporting legs 3 are provided at the bottom of the mud bucket 2 for stably supporting the shell 1 and the mud bucket 2; three evenly distributed lifting rings 4 are provided on the top of the shell 1 to facilitate lifting and transporting the device.

[0029] like Figure 1 and Figure 2 As shown, a ring-shaped filter screen 5 is provided in the middle of the shell 1, and the bottom of the filter screen 5 is connected to the mud bucket 2; a tunnel wastewater area is formed between the inner wall of the filter screen 5 and the inner wall of the mud bucket 2, and a clean water area is formed between the outer wall of the filter screen 5, the inner wall of the mud bucket 2 and the inner wall of the shell 1; two water distribution pipe cross pipes 11 are provided above the shell 1, one end of the water distribution pipe cross pipe 11 is blocked, and the other end is provided with a first manual valve 10, and the end of the first manual valve 10 away from the water distribution pipe cross pipe 11 is provided with a tunnel wastewater inlet pipe 6 and a flushing pipe 8; a first electric valve 7 is provided on the tunnel wastewater inlet pipe 6; and a second electric valve 9 is provided on the flushing pipe 8.

[0030] In order to reasonably utilize the entire filter screen 5 and avoid excessive load on the bottom of the filter screen 5, silt may accumulate under the action of gravity. Figure 1 As shown, two water distribution pipe vertical pipes 12 of different lengths are provided on the water distribution pipe horizontal pipe 11, and the lengths of the two water distribution pipe vertical pipes 12 are respectively 3 / 4 and 1 / 2 of the height of the filter screen 5. Figure 2 As shown, two rows of evenly spaced circular holes are opened on the vertical pipe 12 of the water distribution pipe, and the opening directions of the circular holes are all directed to the filter screen 5; Figure 3 As shown, the diameter of the circular hole is 30 mm, and the angle between the two rows of circular holes is 45°.

[0031] Tunnel wastewater enters the water distribution pipe transverse pipe 11 through the tunnel wastewater inlet pipe 6, and is splashed onto the inner wall of the filter screen 5 through the circular holes on the water distribution pipe vertical pipe 12 below the water distribution pipe transverse pipe 11, thereby filtering suspended matter in the tunnel wastewater; and the height difference between the inlet and outlet water is large, and the pressure difference can be used to achieve rapid filtration and ensure stable water output.

[0032] like Figure 1 As shown, a first mud discharge pipe 16 is provided at the bottom of the mud bucket 2, one end of the first mud discharge pipe 16 passes through the mud bucket 2 and extends to the bottom of the tunnel wastewater area for discharging mud and water; a third manual valve 17, a third electric valve 18 and a second mud discharge pipe 19 are provided in sequence at one end of the first mud discharge pipe 16 away from the mud bucket 2.

[0033] like Figure 1 and Figure 2 As shown, a first water outlet pipe 13 is provided on the side of the housing 1, one end of which penetrates the housing 1 and extends to the bottom of the clean water area for discharging filtered clean water. The end of the first water outlet pipe 13 away from the housing 1 is connected to a second water outlet pipe 15 through a second manual valve 14.

[0034] The filter mesh 5 is made of stainless steel, and the pore size of the filter mesh 5 is 20-100 μm; when the suspended matter concentration is required to be less than or equal to 20 mg / L, the pore size of the filter mesh 5 is 20 μm; when the suspended matter concentration is required to be less than or equal to 100 mg / L, the pore size of the filter mesh 5 is 80-100 μm.

[0035] like Figure 1 As shown, a suspended matter monitoring probe 20 is provided in the housing 1 and is located in the clean water area, and is used to monitor the concentration of suspended matter in the clean water area.

[0036] In this embodiment, the first manual valve 10 , the second manual valve 14 and the third manual valve 17 are all in a normally open state.

[0037] When the suspended solids concentration is too high, close the first electric valve 7, start the second electric valve 9 and the third electric valve 18, and spray clean water from the circular holes on the water distribution pipe horizontal pipe 11 and the water distribution pipe vertical pipe 12 to the inner wall of the filter screen 5 through the flushing pipe 8 to flush the filter screen until the suspended solids concentration in the clean water area meets the requirements.

[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or replacements within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A tunnel wastewater unpowered filtering device, characterized by: It comprises a shell (1) with a cylindrical structure, and a mud bucket (2) arranged at the bottom of the shell (1), wherein the bottom of the mud bucket (2) is provided with a plurality of evenly distributed supporting legs (3); A ring-shaped filter screen (5) is provided in the middle of the housing (1), and the bottom of the filter screen (5) is connected to the mud bucket (2); a tunnel wastewater area is formed between the inner wall of the filter screen (5) and the inner wall of the mud bucket (2), and a clean water area is formed between the outer wall of the filter screen (5), the inner wall of the mud bucket (2) and the inner wall of the housing (1); A plurality of water distribution pipe transverse pipes (11) are arranged above the shell (1), one end of the water distribution pipe transverse pipe (11) is blocked, and the other end is provided with a first manual valve (10), and the end of the first manual valve (10) away from the water distribution pipe transverse pipe (11) is provided with a tunnel wastewater inlet pipe (6) and a flushing pipe (8); The water distribution pipe horizontal pipe (11) is provided with two water distribution pipe vertical pipes (12) of different lengths, and the water distribution pipe vertical pipe (12) is provided with two rows of evenly distributed circular holes, the opening directions of the circular holes are all directed toward the filter screen (5); A first mud discharge pipe (16) is provided at the bottom of the mud hopper (2), one end of the first mud discharge pipe (16) passes through the mud hopper (2) and extends to the bottom of the tunnel wastewater area for discharging mud and water; A first water outlet pipe (13) is provided on the side of the shell (1), one end of the first water outlet pipe (13) passes through the shell (1) and extends to the bottom of the clean water area, for discharging clean water after filtration.

2. The unpowered filtering device for tunnel wastewater according to claim 1 is characterized in that: The lengths of the two water distribution pipe risers (12) are respectively 3 / 4 and 1 / 2 of the height of the filter screen (5).

3. The unpowered filtering device for tunnel wastewater according to claim 2 is characterized in that: The diameter of the circular holes is 30 mm, and the angle between the two rows of circular holes is 45°.

4. The unpowered filtering device for tunnel wastewater according to claim 1 or 2, characterized in that: The filter screen (5) is made of stainless steel, and the pore size of the filter screen is 20-100 μm.

5. The unpowered filtering device for tunnel wastewater according to claim 1 is characterized in that: The housing (1) is provided with a suspended matter monitoring probe (20) located in the clear water area, and is used to monitor the concentration of suspended matter in the clear water area.

6. The unpowered filtering device for tunnel wastewater according to claim 1 or 5, characterized in that: The top of the shell (1) is provided with three evenly distributed hanging rings (4).

7. The unpowered filtering device for tunnel wastewater according to claim 1 is characterized in that: The tunnel wastewater inlet pipe (6) is provided with a first electric valve (7); the flushing pipe (8) is provided with a second electric valve (9); One end of the first water outlet pipe (13) away from the housing (1) is connected to a second water outlet pipe (15) via a second manual valve (14); A third manual valve (17), a third electric valve (18) and a second mud discharge pipe (19) are sequentially arranged at one end of the first mud discharge pipe (16) away from the mud bucket (2).

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