Pre-filtering device for sewage treatment

Abstract

The utility model discloses a sewage treatment pre-filtering device and belongs to the technical field of sewage pretreatment devices. Comprising a tank; the interior of the pool body is divided into a filtering cavity and a garbage cavity through a partition plate, a liftable garbage can is arranged in the garbage cavity, a water inlet pipe capable of changing the length of the part stretching into the filtering cavity is arranged on one side of the filtering cavity, a water outlet pipe is arranged below the filtering cavity, and a rotatable rotating shaft is arranged above the partition plate and connected to a filtering box in the filtering cavity. The rotating shaft is arranged to drive the garbage can to rotate, sewage flowing out of the water inlet pipe can be filtered through the filtering box and then discharged out of the water outlet pipe, after the filtering box filters for a period of time, filtered garbage can be transferred into the garbage can through rotation, and then workers can conveniently take out the garbage in the garbage can by lifting the garbage can; therefore, the filter box cannot be blocked.

Description

Technical Field

[0001] The utility model provides a sewage treatment pre-filtering device, belonging to the technical field of sewage pre-treatment devices. Background Art

[0002] Sewage refers to water that has been used in life and production activities and has lost its original function. It contains various pollutants such as harmful or harmless suspended matter, colloids, soluble substances, and microorganisms. It comes from multiple fields such as households, commerce, industry, and agriculture. Sewage contains pathogens, oils, heavy metals, chemicals and other components. If it is discharged directly without treatment, it will not only seriously pollute surface water and groundwater, damage aquatic ecosystems, but may also affect human drinking water safety and public health.

[0003] At present, sewage treatment mainly includes: 1. Pretreatment: removing larger suspended solids, garbage and floating objects in sewage; 2. Primary treatment or physical treatment: removing suspended solids with larger proportion and oily substances with smaller proportion in sewage; 3. Secondary treatment biological treatment: removing organic matter in sewage, mainly including activated sludge method and biofilm method; 4. Tertiary treatment advanced treatment: further removing pollutants that cannot be removed by secondary treatment, such as chemical precipitation, filtration, adsorption, membrane treatment such as reverse osmosis, nanofiltration, disinfection such as chlorination, ultraviolet light, etc., to achieve higher emission requirements or meet the standards for reused water; 5. Sludge treatment: the sludge generated in the sewage treatment process needs to be properly handled through concentration, digestion, dehydration and final disposal such as land use, incineration or landfill.

[0004] At present, a filter is usually used to filter sewage during the pretreatment of sewage. Therefore, garbage in the sewage will remain on the surface of the filter, so the filter is easily clogged. Utility Model Content

[0005] The technical problem to be solved by the utility model is that when a filter screen is currently used to pre-filter sewage, the filter screen is easily clogged.

[0006] In order to solve the above problems, the utility model proposes a technical solution: a sewage treatment pre-filtration device, comprising a pool body; the interior of the pool body is divided into a filter chamber and a garbage chamber by a partition, a liftable garbage box is provided in the garbage chamber, a water inlet pipe with a variable length extending into the filter chamber is provided on one side of the filter chamber, a water outlet pipe is provided below the filter chamber, a rotatable shaft is provided above the partition, and the shaft is connected to the filter box in the filter chamber.

[0007] As an improvement, the lower part of the pool body is provided with supporting legs in the middle of the filter chamber and the garbage chamber on both sides;

[0008] As an improvement, the upper end of the partition is located at the upper part of the pool body;

[0009] As an improvement, a cylinder 1 is provided at each of the four corners of the trash bin below the pool body. The cylinder shaft of the cylinder 1 passes through the pool body and is connected to the trash bin. When the cylinder shaft of the cylinder 1 is extended, the trash bin protrudes from the pool body, and the lower end of the cylinder 1 is located above the lower end of the support leg.

[0010] As an improvement, the water inlet pipe includes a main water pipe arranged outside the pool body, and a sliding auxiliary water pipe is provided at one end of the main water pipe that is flush with the inner wall of the filter chamber. A valve is provided at the end of the auxiliary water pipe. The pool body is provided with two cylinders on both sides of the main water pipe. The cylinder shaft of the second cylinder passes through the side wall of the pool body and is connected to the end of the auxiliary water pipe through a connecting plate. When the cylinder shaft of the second cylinder drives the auxiliary water pipe to extend, the end of the auxiliary water pipe is located above the filter box.

[0011] As an improvement, a motor connected to a rotating shaft key is provided on one side of the pool body;

[0012] As an improvement, when the motor drives the filter box to rotate through the rotating shaft, the filter box does not contact the side wall of the filter cavity. When the filter box rotates 180 degrees, the upper end surface of the filter box fits the upper end surface of the garbage bin when the cylinder axis of the cylinder is shortened;

[0013] As an improvement, a pull-out door is provided on one side of the trash can.

[0014] Beneficial effects of the utility model:

[0015] By setting a rotating shaft to drive the garbage bin to rotate, the sewage flowing out of the water inlet pipe will first be filtered through the filter box and then discharged from the outlet pipe. After filtering for a period of time, the filter box can be rotated to transfer the filtered garbage into the garbage bin, and then the garbage bin can be raised to make it easier for workers to take out the garbage in the garbage bin, so that the filter box will not be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a sewage treatment pre-filtration device of the present utility model.

[0017] Figure 2 This is a schematic diagram of the rotating state of a filter box of a sewage treatment pre-filtration device of the present invention.

[0018] Figure 3 This is a schematic diagram of a wastewater treatment pre-filtration device of the present invention when the garbage bin is raised.

[0019] Figure 4 This is a cross-sectional view of a tank body of a sewage treatment pre-filtration device according to the present utility model.

[0020] 1. Pool body; 101. Partition; 102. Filter chamber; 103. Garbage chamber; 104. Support leg; 2. Garbage bin; 201. Cylinder 1; 202. Door; 3. Water inlet pipe; 301. Main water pipe; 302. Auxiliary water pipe; 303. Valve; 304. Cylinder 2; 305. Connecting plate; 4. Water outlet pipe; 5. Rotating shaft; 501. Motor; 6. Filter bin. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] according to Figure 1 —4: The utility model provides a sewage treatment pre-filtering device: comprising a tank body 1; the interior of the tank body 1 is divided into a filter chamber 102 and a garbage chamber 103 by a partition 101, a liftable garbage bin 2 is provided in the garbage chamber 103, a water inlet pipe 3 with a variable length of extension into the filter chamber 102 is provided on one side of the filter chamber 102, a water outlet pipe 4 is provided below the filter chamber 102, a rotatable shaft 5 is provided above the partition 101, the shaft 5 is connected to the filter box 6 arranged in the filter chamber 102, and the bottom of the tank body 1 is provided with a filter box 6 arranged in the filter chamber 102. Support legs 104 are respectively provided in the middle of both sides of the filter chamber 102 and the garbage chamber 103. The upper end of the partition 101 is located at the upper part of the pool body 1. The garbage bin 2 is driven to rotate by the rotating shaft 5, so that the sewage flowing out of the water inlet pipe 3 will first pass through the filter box 6 and then be discharged from the outlet pipe 4. After filtering for a period of time, the filter box 2 can be rotated to transfer the filtered garbage to the garbage bin 2. Then, by raising the garbage bin 2, it is convenient for workers to take out the garbage in the garbage bin 2, so that the filter box 6 will not be blocked;

[0023] Among them, cylinders 201 are respectively provided at the four corners of the trash bin 2 below the pool body 1. The cylinder shaft of cylinder 201 passes through the pool body 1 and is connected to the trash bin 2. When the cylinder shaft of cylinder 201 is extended, the trash bin 2 protrudes from the pool body 1, and the lower end of cylinder 201 is located above the lower end of the support leg 104. A pull-out door 202 is provided on one side of the trash bin 1. In this way, the trash bin 2 can be raised by extending the cylinder shafts of the four cylinders 201 at the same time. When the trash bin 2 is raised, it is convenient for workers to take out the garbage in the trash bin 2 by opening the door 202.

[0024] The water inlet pipe 3 includes a main water pipe 301 arranged on the outside of the pool body 1, and a sliding auxiliary water pipe 302 is provided at one end of the main water pipe 301 flush with the inner wall of the filter chamber 102, and a valve 303 is provided at the end of the auxiliary water pipe 302. The pool body 1 is respectively provided with a second cylinder 304 on both sides of the main water pipe 301. The cylinder shaft of the second cylinder 304 passes through the side wall of the pool body 1 and is connected to the end of the auxiliary water pipe 302 through the connecting plate 305. When the cylinder shaft of the second cylinder 304 drives the auxiliary water pipe 302 to extend, the end of the auxiliary water pipe 302 is located above the filter box 6; when the cylinder shaft of the second cylinder 304 drives the auxiliary water pipe 302 to shorten, the auxiliary water pipe 302 does not affect the rotation of the filter box 6, and the inner wall of the end of the auxiliary water pipe 302 located in the main water pipe 301 is provided with an oblique angle, so that the thrust of the water flow on the auxiliary water pipe 302 is small, and the water inlet pipe 3 will not affect the rotation of the filter box 6.

[0025] according to Figure 1 、 2 As shown in Figure 3: One side of the pool body 1 is provided with an electric motor 501 key-connected to the rotating shaft 5. When the electric motor 501 drives the filter box 6 to rotate through the rotating shaft 5, the filter box 6 does not contact the side wall of the filter cavity 102. When the filter box 6 rotates 180°, the upper end surface of the filter box 6 fits the upper end surface of the trash can 2 when the cylinder axis of the cylinder 201 is shortened; in this way, after the electric motor 501 drives the filter box 6 to rotate through the rotating shaft 5, when the upper end of the filter box 6 contacts the upper end of the trash can 2, the garbage in the filter box 6 will receive a certain impact, so that all the garbage in the filter box 6 can fall into the trash can 2.

[0026] The principle of the present utility model is as follows: when in use, first connect the water inlet pipe 3 to the sewage pipe, so that the sewage in the sewage pipe will pass through the main water pipe 301 and the auxiliary water pipe 302 and then pass through the filter box 6 to filter out the garbage and then flow out from the outlet pipe 4. After the filter box 6 has filtered for a period of time, the garbage will remain in the filter box 6, which is easy to clog and affect the filtering effect. At this time, close the valve 303 and shrink the cylinder shaft of the cylinder 2 304. The cylinder 2 304 will shorten the extension length of the auxiliary water pipe 302 through the connecting plate 305. Then start the motor 501, and the motor 501 will drive the filter box 6 through the rotating shaft 5. Rotate until the upper end surface of the filter box 6 contacts the upper end surface of the trash bin 2, so that the garbage in the filter box 6 receives a certain impact and all falls into the trash bin 2, then reverse the output shaft of the motor 501 to reset the filter box 6, then extend the auxiliary water pipe 302 and open the valve 303, then extend the cylinder shaft of the cylinder 1 201 to make the trash bin 2 protrude from the pool body 1, then open the door 202 and take out all the garbage. After the garbage is taken out, put the door 202 back and retract the cylinder seat of the cylinder 1 201 to reset the trash bin 2, so that the filter box 6 will not be blocked.

[0027] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A sewage treatment pre-filtration device, comprising a tank body (1); characterized in that: The interior of the pool body (1) is divided into a filter chamber (102) and a garbage chamber (103) by a partition (101); a liftable garbage box (2) is provided in the garbage chamber (103); a water inlet pipe (3) whose length extending into the filter chamber (102) can be changed is provided on one side of the filter chamber (102); a water outlet pipe (4) is provided below the filter chamber (102); a rotatable rotating shaft (5) is provided above the partition (101); the rotating shaft (5) is connected to a filter box (6) provided in the filter chamber (102).

2. A sewage treatment pre-filtration device according to claim 1, characterized in that: Support legs (104) are respectively provided at the middle of the filter chamber (102) and the garbage chamber (103) below the pool body (1).

3. A sewage treatment pre-filtration device according to claim 1, characterized in that: The upper end of the partition (101) is located at the upper part of the tank body (1).

4. A sewage treatment pre-filtration device according to claim 2, characterized in that: Cylinders 1 (201) are provided at the four corners of the trash bin (2) below the pool body (1). The cylinder shaft of the cylinder 1 (201) passes through the pool body (1) and is connected to the trash bin (2). When the cylinder shaft of the cylinder 1 (201) is extended, the trash bin (2) protrudes from the pool body (1), and the lower end of the cylinder 1 (201) is located above the lower end of the support leg (104).

5. A sewage treatment pre-filtration device according to claim 1, characterized in that: The water inlet pipe (3) comprises a main water pipe (301) arranged outside the pool body (1); a sliding auxiliary water pipe (302) is provided at one end of the main water pipe (301) flush with the inner wall of the filter chamber (102); a valve (303) is provided at the end of the auxiliary water pipe (302); the pool body (1) is provided with a second cylinder (304) on both sides of the main water pipe (301); the cylinder shaft of the second cylinder (304) passes through the side wall of the pool body (1) and is connected to the end of the auxiliary water pipe (302) via a connecting plate (305); when the cylinder shaft of the second cylinder (304) drives the auxiliary water pipe (302) to extend, the end of the auxiliary water pipe (302) is located above the filter box (6).

6. A sewage treatment pre-filtration device according to claim 4, characterized in that: A motor (501) key-connected to the rotating shaft (5) is provided on one side of the cell body (1).

7. A sewage treatment pre-filtration device according to claim 6, characterized in that: When the motor (501) drives the filter box (6) to rotate via the rotating shaft (5), the filter box (6) does not contact the side wall of the filter cavity (102); when the filter box (6) rotates 180°, the upper end surface of the filter box (6) fits the upper end surface of the trash box (2) when the cylinder axis of the cylinder 1 (201) is shortened.

8. The sewage treatment pre-filtration device according to claim 1, characterized in that: A pull-out door (202) is provided on one side of the trash bin (2).

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