Sewage cyclone screening device

Abstract

The utility model discloses a sewage rotational flow screening device which is characterized in that a body, an overflow pipe, an overflow water collecting tank, an underflow pipe and an underflow water collecting tank are arranged in a machine shell of the device, an internal rotational flow screening cavity is of a conical structure and is arranged in a combined mode, and a guide screw is arranged below a top cover of the rotational flow screening cavity; the overflow pipe penetrates through the top cover of the cyclone screening cavity and the reserved guide spiral pipe orifice to be communicated with the cyclone screening cavity, the overflow pipe is connected with an overflow water collecting tank, an underflow pipe is arranged below the cyclone screening cavity to be connected with the underflow water collecting tank, and a pressure distribution box is connected with each cyclone screening cavity in parallel and is provided with an opening and closing valve to control a water inlet pipe of each cyclone screening cavity; the water supply pipe of the pressure distribution box is connected with a high-pressure water supply pump; sewage is pumped into the pressure distribution box through the high-pressure water feeding pump under isolation of the hydraulic pulverizer, the automatic control system adjusts the opening and closing valve to achieve the input number of the rotational flow screening cavities, the high-pressure sewage entering the rotational flow screening cavities can flow downwards in a high-speed rotating mode under the action of the guide screws, and substances with large density in the sewage are discharged out of underflow pipes of the rotational flow screening cavities through centrifugal force. Substances with small density can be concentrated in the middle of the rotational flow screening cavity and are extruded by internal pressure to be discharged from an overflow pipe at the top, and effluent enters an underflow water collecting tank and an overflow water collecting tank. Bottom flow effluent is rich in activated sludge, and overflow effluent has more inorganic products and is useless for the system, so that the bottom flow effluent is discharged into a water inlet system, and the overflow effluent is pressed to sludge and discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage screening, in particular to a sewage cyclone screening device. Background Art

[0002] In the sewage treatment process of sewage treatment plants, the process requires that the higher the proportion of activated sludge, the better the sewage treatment effect. In traditional sewage treatment technology, the end of the sewage treatment process is to discharge the mixture of sludge and sewage into the sludge pressing system. At this time, the pressed sludge will contain a large amount of activated sludge, causing the loss of activated sludge. Summary of the invention

[0003] The utility model aims to provide a sewage cyclone screening device to solve the problem of activated sludge loss mentioned in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage cyclone screening device, wherein a body, a pressure distribution box, an overflow pipe, an overflow water collecting box, an underflow pipe, and an underflow water collecting box are arranged inside the casing of the cyclone screening device, a cyclone screening chamber upper cover is arranged on the top of the body, a guide spiral is arranged under the cyclone screening chamber upper cover, an overflow pipe opening is reserved in the middle of the guide spiral, an overflow pipe opening is also reserved at the corresponding position of the cyclone screening chamber upper cover and the guide spiral, the overflow pipe passes through the cyclone screening chamber upper cover and the reserved pipe opening of the guide spiral and connects with the cyclone The screening chambers are connected, an overflow water collecting tank is provided under the overflow pipe, an underflow pipe is provided under the cyclone screening chamber, an underflow collecting tank is provided under the underflow pipe, an overflow outlet pipe and an underflow outlet pipe are provided at one end of the water tank, the pressure distribution box is provided with water outlets which are respectively connected to the water inlet pipes of each cyclone screening chamber, an opening and closing valve is provided on the pressure distribution box to respectively control the water inlet pipes of each cyclone screening chamber, a water supply pipe is provided at one end of the pressure distribution box, a high-pressure water supply pump is provided at the end of the water supply pipe, and a hydraulic crusher is provided at the water inlet at the lower end of the high-pressure water supply pump.

[0005] Preferably, the cyclone screening device body and the cyclone screening chamber upper cover are integrally cast from wear-resistant and corrosion-resistant materials.

[0006] Preferably, the cyclone screening chamber is arranged in a combination of conical structures.

[0007] Preferably, the number of the cyclone screening chambers is determined according to production requirements.

[0008] Preferably, all the connection parts between the components of the cyclone screen device body are sealed and glued to form a closed whole.

[0009] Preferably, the overflow water collecting tank and the underflow water collecting tank are of open design.

[0010] Preferably, the cyclone screening device is provided with a pressure sensor, a liquid level sensor, and a flow sensor, and the automatic control system controls the switch of the opening and closing valve according to the changes in the sensor values, thereby adjusting the input quantity into the cyclone screening chamber.

[0011] Preferably, each cyclone screening chamber is installed in parallel with the pressure distribution box, and has the same working pressure value.

[0012] Preferably, the cyclone screening device adopts an intelligent control system to ensure that each cyclone screening chamber in use is in a constant pressure operating state under the design pressure.

[0013] The beneficial effects of the utility model are as follows: a sewage cyclone screening device is added to the front end of the sludge pressing system to screen the activated sludge again, so as to reduce the loss of a large amount of activated sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model; it mainly reflects the overall structure;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model; it mainly reflects the internal front structure of the casing;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model, which mainly reflects the internal back structure of the casing;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model, which mainly reflects the cross-sectional structure of the main body;

[0018] Figure markings: 1. Casing, 2. Main body, 201. Cyclone screening chamber, 202. Guide spiral, 203. Cyclone screening chamber water inlet pipe, 204. Cyclone screening chamber upper cover, 3. Overflow pipe, 4. Overflow water collecting tank, 5. Overflow outlet pipe, 6. Underflow pipe, 7. Underflow water collecting tank, 8. Underflow outlet pipe, 9. Pressure distribution box, 10. Opening and closing valve, 11 Water supply, 12. High-pressure water supply pump, 13. Hydraulic pulverizer. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, this specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make modifications to the embodiments without creative contribution as needed, but as long as they are within the scope of the claims of the utility model, they are protected by the patent law.

[0020] like Figure 1-4As shown, the utility model discloses a sewage cyclone screening device, which comprises a casing (1), a body (2), a cyclone screening chamber (201), a guide spiral (202), a cyclone screening chamber water inlet pipe (203), a cyclone screening chamber upper cover (204), an overflow pipe (3), an overflow water collecting tank (4), an overflow water outlet pipe (5), an underflow pipe (6), an underflow water collecting tank (7), an underflow water outlet pipe (8), a pressure distribution box (9), an opening and closing valve (10), a water supply pipe (11), a high-pressure water supply pump (12), and a hydraulic pulverizer (13). The cyclone screening device A body (2), a pressure distribution box (9), an overflow pipe (3), an overflow water collecting box (4), an underflow pipe (6), and an underflow water collecting box (7) are provided inside the device casing (1); the body (2) is integrally cast from a wear-resistant and corrosion-resistant material; the internal cyclone screening chamber (201) is arranged in a conical structure combination; the number of cyclone screening chambers (201) is determined according to production requirements; the top cover of the cyclone screening chamber (201) is integrally cast from a wear-resistant and corrosion-resistant material; a guide is provided below the cyclone screening chamber upper cover (204) at a position corresponding to the cyclone screening chamber (201); The guide spiral (202) has an overflow pipe opening reserved in the middle, and the upper cover (204) of the cyclone screening chamber and the corresponding position of the guide spiral (202) also have overflow pipe openings reserved, the overflow pipe (3) passes through the upper cover (204) of the cyclone screening chamber and the reserved pipe opening of the guide spiral (202) to communicate with the cyclone screening chamber (201), an overflow water collecting tank (4) is provided below the overflow pipe (3), an underflow pipe (6) is provided below the cyclone screening chamber (201), an underflow water collecting tank (7) is provided below the underflow pipe (6), and the overflow water collecting tank (4) and the underflow The water collecting box (7) is of an open design, and an overflow outlet pipe (5) and an underflow outlet pipe (8) are respectively provided at one end of the water tank. The pressure distribution box (9) is provided with an outlet respectively connected to the water inlet pipe (203) of each cyclone screening chamber. The pressure distribution box (9) is provided with an opening and closing valve (10) to control the water inlet pipe (203) of each cyclone screening chamber. A water supply pipe (11) is provided at one end of the pressure distribution box (9), and a high-pressure water supply pump (12) is provided at the end of the water supply pipe (11). A hydraulic pulverizer (13) is provided at the water inlet at the lower end of the high-pressure water supply pump (12).

[0021] The working principle of this embodiment: when the sewage cyclone screening device is running, the hydraulic crusher is started first, and then the high-pressure water pump is started. At this time, the mixture of sludge and sewage will first pass through the hydraulic crusher, which will crush the large particles mixed in the mud and water mixture to prevent blocking the high-pressure water pump. The mud and water mixture that has passed the hydraulic crusher enters the pressure distribution box through the water supply pipe under the action of the high-pressure water pump. The automatic control system will adjust the switch of the opening and closing valve according to production needs to control the number of cyclone screening chambers put into use. The high-pressure mud and water mixture entering the cyclone screening chamber will form a high-speed rotating downstream effect under the action of the guide spiral. Since the cyclone screening chamber is a conical shape with a coarse top and a thin bottom, the residence time of the mud and water mixture in the cyclone screening chamber is increased. The high-speed rotating mud-water mixture will generate a large centrifugal force. Under the action of centrifugal force, the denser part of the mud-water mixture will rotate downstream along the inner wall of the cyclone screening chamber and be discharged from the underflow pipe, while the smaller part will be concentrated in the middle position of the cyclone screening chamber and squeezed by the internal pressure to be discharged from the overflow pipe at the top. The two parts of the effluent enter the underflow collecting tank and the overflow collecting tank respectively. The collecting tank can precipitate mud and heavier inorganic matter, and then they are discharged into various required systems through the underflow outlet pipe and the overflow outlet pipe on the end of the collecting tank. The underflow effluent contains rich activated sludge, while the overflow effluent is mainly inorganic products such as suspended solids and expanded sludge that have side effects on the process. Therefore, the underflow effluent needs to be discharged into the water inlet system, and the overflow effluent needs to be discharged into the mud pressing system for mud pressing and removal treatment.

Claims

1. A sewage cyclone screening device, characterized in that: Casing (1), body (2), cyclone screening chamber (201), guide spiral (202), cyclone screening chamber water inlet pipe (203), cyclone screening chamber upper cover (204), overflow pipe (3), overflow water collecting tank (4), overflow water outlet pipe (5), underflow pipe (6), underflow water collecting tank (7), underflow water outlet pipe (8), pressure distribution box (9), opening and closing valve (10), water supply pipe (11), high pressure water supply pump (12), hydraulic pulverizer ( 13), the casing (1) of the cyclone screening device is provided with a body (2), a pressure distribution box (9), an overflow pipe (3), an overflow water collecting box (4), an underflow pipe (6), and an underflow water collecting box (7), the top of the body (2) is provided with a cyclone screening chamber upper cover (204), the bottom of the cyclone screening chamber upper cover (204) is provided with a guide spiral (202), the middle of the guide spiral (202) is reserved for an overflow pipe port, and the cyclone screening chamber upper cover (204) and the guide spiral (202) are connected to each other. An overflow pipe opening is also reserved at a position corresponding to the guide spiral (202); the overflow pipe (3) passes through the upper cover (204) of the cyclone screening chamber and the reserved pipe opening of the guide spiral (202) to communicate with the cyclone screening chamber (201); an overflow water collecting tank (4) is provided below the overflow pipe; an underflow pipe (6) is provided below the cyclone screening chamber (201); an underflow water collecting tank (7) is provided below the underflow pipe (6); an overflow outlet pipe (5) and an underflow outlet pipe (7) are respectively provided at one end of the water tank. The pressure distribution box (9) is provided with a water outlet which is respectively connected to the water inlet pipe (203) of each cyclone screening chamber, and the pressure distribution box (9) is provided with an opening and closing valve which controls the water inlet pipe (203) of each cyclone screening chamber. A water supply pipe (11) is provided at one end of the pressure distribution box (9), a high-pressure water supply pump (12) is provided at the end of the water supply pipe (11), and a hydraulic pulverizer (13) is provided at the water inlet at the lower end of the high-pressure water supply pump (12).

2. A sewage cyclone screening device according to claim 1, characterized in that: The cyclone screening device body and the cyclone screening chamber upper cover are integrally cast from wear-resistant and corrosion-resistant materials.

3. A sewage cyclone screening device according to claim 1, characterized in that: The cyclone screening chamber (201) is arranged in a combined manner in a conical structure.

4. A sewage cyclone screening device according to claim 1, characterized in that: The number of the cyclone screening chambers (201) can be customized according to production requirements.

5. The sewage cyclone screening device according to claim 1, characterized in that: The connection parts between the various components of the cyclone screening device body (2) are all sealed and glued to form a closed whole.

6. The sewage cyclone screening device according to claim 1, characterized in that: The overflow water collecting tank (4) and the underflow water collecting tank (7) are of open design.

7. The sewage cyclone screening device according to claim 1, characterized in that: The cyclone screening device is provided with a pressure sensor, a liquid level sensor, and a flow sensor, and the automatic control system controls the opening and closing of the opening and closing valve according to changes in the sensor values, thereby adjusting the input amount into the cyclone screening chamber (201).

8. The sewage cyclone screening device according to claim 1, characterized in that: Each cyclone screening chamber (201) is installed in parallel with the pressure distribution box (9), and has the same working pressure value.

9. The sewage cyclone screening device according to claim 1, characterized in that: The cyclone screening device adopts an intelligent control system to ensure that each cyclone screening chamber in use is in a constant pressure operation state under the design pressure.

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