Sludge dewatering equipment for sewage treatment

Abstract

The utility model relates to the field of sewage treatment equipment, in particular to sludge dewatering equipment for sewage treatment, which comprises a rack, a filter pressing tank with an opening in the lower end is arranged on the rack, a sealing cover is hinged to the lower end of the filter pressing tank, a feeding pipe is arranged on the side face of the filter pressing tank, and the side wall of the filter pressing tank below the feeding tank is made of a water filtering plate. A pressure plate is vertically and slidably arranged in the filter pressing tank, a first telescopic mechanism connected with the pressure plate is vertically arranged at the upper end of the filter pressing tank, a water supply ring is arranged at the upper end of the pressure plate, multiple groups of water spraying assemblies are arranged on the side surface of the water supply ring, the water supply ring is connected with a water supply hose, and a water supply mechanism connected with the water supply hose is arranged at the upper end of the filter pressing tank. The self-cleaning filter plate has a self-cleaning function, and blockage of the filter plate in the dewatering process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment equipment, in particular to sludge dewatering equipment for sewage treatment. Background Art

[0002] In industrial and agricultural production, sewage is generated, especially in agricultural production, such as aquaculture, which produces sewage with a large sludge content. These sludges are rich in organic matter and have recycling value. However, in the process of recycling these sludges, these sludges need to be dehydrated. There are two existing dehydration methods, one is mechanical filtration, and the second is spreading and drying. The second method requires a large area of ​​the site and has low efficiency. Therefore, mechanical filtration is currently a commonly used method. However, it is easy to cause filter plate clogging during the filtration process, affecting the filtration efficiency. Therefore, it is particularly necessary to develop a sludge dewatering equipment for sewage treatment that can perform self-cleaning and reduce filter plate clogging. Summary of the Invention

[0003] The purpose of the utility model is to provide a sludge dewatering device for sewage treatment, which has the advantages of being able to perform self-cleaning and reduce filter plate clogging.

[0004] The technical solutions adopted are as follows:

[0005] A sludge dewatering device for sewage treatment comprises a frame, a filter press tank with an opening at the lower end is arranged on the frame, a sealing cover is hinged at the lower end of the filter press tank, a feed pipe is arranged on the side of the filter press tank, the side wall of the filter press tank below the feed tank is made of a water filter plate, a pressure plate is vertically slidably arranged in the filter press tank, a first telescopic mechanism connected to the pressure plate is vertically arranged at the upper end of the filter press tank, a water supply ring is arranged at the upper end of the pressure plate, a plurality of water spray assemblies are arranged on the side of the water supply ring, the water supply ring is connected to a water supply hose, and a water supply mechanism connected to the water supply hose is arranged at the upper end of the filter press tank.

[0006] Preferably, the water supply ring is coaxially connected to the pressure plate, a reciprocating motor is provided on the pressure plate, the reciprocating motor is connected to a gear, and the water supply ring is coaxially provided with a gear ring meshing with the gear.

[0007] Preferably, the upper end surface of the pressure plate is in the shape of a truncated cone with a higher middle and lower side surfaces.

[0008] Preferably, a second telescopic mechanism is rotatably provided on the frame, and the upper end of the second telescopic mechanism is rotatably connected to the sealing cover.

[0009] Preferably, the second telescopic mechanism and the first telescopic mechanism are both hydraulic telescopic rods.

[0010] Preferably, the water spray assembly includes three water spray heads, adjacent water spray heads are spaced 45 degrees apart, and the middle water spray head is arranged horizontally.

[0011] Preferably, a water collecting tray with an open upper end is provided at the lower part of the side of the filter press tank, and a liquid outlet pipe is provided at the lower end of the water collecting tray.

[0012] Compared with the existing technology, the beneficial effects are:

[0013] 1. The utility model puts the sludge into the filter press tank, and the first telescopic mechanism controls the pressure plate to descend, thereby discharging the water in the sludge from the water filter plate. Then, the sealing cover is opened to discharge the sludge after the filter press, and then the water supply mechanism is started to supply water to each water spray component. At the same time, the pressure plate is controlled to rise. During the rising process, the water sprayed by each water spray component is used to flush the water filter plate to reduce the blockage of the water filter plate.

[0014] 2. In the present invention, the reciprocating motor controls the reciprocating rotation of the water supply ring, so that the water spray assembly cleans the water filter plate more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural diagram of a sludge dewatering device for sewage treatment in the utility model.

[0016] Figure 2 yes Figure 1 The structural diagram at A in the middle,

[0017] Figure 3 yes Figure 1 The structural diagram at B in the figure is as follows:

[0018] In the figure: 1. frame; 2. filter press; 3. sealing cover; 4. second telescopic mechanism; 5. feed pipe; 6. water filter plate; 7. pressure plate; 8. first telescopic mechanism; 9. water supply ring; 10. reciprocating motor; 11. gear; 12. ring gear; 13. water spray assembly; 14. water supply mechanism; 15. water supply hose; 16. water collecting tray; 17. liquid outlet pipe. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to specific embodiments. Figures 1 to 3 As shown:

[0020] Example 1: A sludge dewatering equipment for sewage treatment includes a frame 1, a filter press tank 2 with an opening at the lower end is provided on the frame 1, a sealing cover 3 is hinged at the lower end of the filter press tank 2, a feed pipe 5 is provided on the side of the filter press tank 2, and the feed sludge enters the filter press tank 2 from the feed pipe 5, and the side wall of the filter press tank 2 below the feed tank is made of a water filter plate 6, which is a prior art and is not described here; a pressure plate 7 is vertically slidably provided in the filter press tank 2, and a first telescopic mechanism 8 connected to the pressure plate 7 is vertically provided at the upper end of the filter press tank 2, the first telescopic mechanism 8 controls the pressure plate 7 to rise and fall, and the first telescopic mechanism 8 controls the pressure plate 7 to descend, thereby discharging water in the sludge from the water filter plate 6, opening the sealing cover 3, and discharging the sludge after pressure filtration and dehydration.

[0021] A water supply ring 9 is provided at the upper end of the pressure plate 7, and multiple groups of water spray assemblies 13 are provided on the side of the water supply ring 9. The water supply ring 9 is connected to a water supply hose 15. A water supply mechanism 14 connected to the water supply hose 15 is provided at the upper end of the filter press 2. The water supply mechanism 14 is connected to an external water source. After the sludge is pressed and dehydrated, and the sealing cover 3 is opened to take out the sludge, the water supply mechanism 14 is started to supply water to each water spray assembly 13. The first telescopic mechanism 8 controls the pressure plate 7 to rise, and the water sprayed by each water spray assembly 13 is used to flush the water filter plate 6 to reduce the blockage of the water filter plate 6.

[0022] Embodiment 2: A sludge dewatering equipment for sewage treatment includes a frame 1, a filter press tank 2 with an opening at the lower end is provided on the frame 1, a sealing cover 3 is hinged at the lower end of the filter press tank 2, a second telescopic mechanism 4 is rotatably provided on the frame 1, the upper end of the second telescopic mechanism 4 is rotatably connected to the sealing cover 3, a feed pipe 5 is provided on the side of the filter press tank 2, and the feed sludge enters the filter press tank 2 from the feed pipe 5, and the side wall of the filter press tank 2 below the feed tank is made of a water filter plate 6, which is a prior art and is not described here; a pressure plate 7 is vertically slidably provided in the filter press tank 2, and a first telescopic mechanism 8 connected to the pressure plate 7 is vertically provided at the upper end of the filter press tank 2, the first telescopic mechanism 8 controls the pressure plate 7 to rise and fall, and the first telescopic mechanism 8 controls the pressure plate 7 to descend, thereby discharging water in the sludge from the water filter plate 6, opening the sealing cover 3, and discharging the sludge after filter pressing and dehydration. The second telescopic mechanism 4 and the first telescopic mechanism 8 are both hydraulic telescopic rods.

[0023] The upper end of the pressure plate 7 is provided with a water supply ring 9, which is coaxially connected to the pressure plate 7. A reciprocating motor 10 is provided on the pressure plate 7, and the reciprocating motor 10 is connected to a gear 11. The water supply ring 9 is coaxially provided with a gear ring 12 that meshes with the gear 11. The side of the water supply ring 9 is provided with multiple groups of water spray assemblies 13. The water spray assembly 13 includes three water spray heads. The adjacent water spray heads are spaced 45 degrees apart, and the middle water spray head is arranged horizontally. The water supply ring 9 is connected to A water supply hose 15 is provided at the upper end of the filter press 2 with a water supply mechanism 14 connected to the water supply hose 15. The water supply mechanism 14 is connected to an external water source. The reciprocating motor 10 controls the reciprocating rotation of the water supply ring 9 to make the cleaning of the water spray assembly 13 more uniform. The upper end face of the pressure plate 7 is in the shape of a truncated cone with a high middle and low side faces, which facilitates the flow of water from the upper end of the pressure plate 7. A water collecting tray 16 with an open upper end is provided on the lower side of the filter press 2, and a liquid outlet pipe 17 is provided at the lower end of the water collecting tray 16.

[0024] The specific working process is as follows: the first telescopic mechanism 8 raises the pressure plate 7 to above the feed pipe 5, and the second telescopic mechanism 4 is used to control the sealing cover 3 to close, and the sludge is put into the filter press tank 2 from the feed pipe 5. The first telescopic mechanism 8 controls the pressure plate 7 to descend, thereby discharging the water in the sludge from the water filter plate 6, and then opens the sealing cover 3 to discharge the sludge after filtration, and then starts the water supply mechanism 14 to supply water to each water spray component 13, and at the same time starts the reciprocating motor 10 to drive the water supply ring 9 to rotate reciprocatingly. As the first telescopic mechanism 8 controls the pressure plate 7 to rise, the water sprayed by each water spray component 13 is used to flush the water filter plate 6 to reduce the blockage of the water filter plate 6.

[0025] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A sludge dewatering device for sewage treatment, characterized by: The invention comprises a frame (1), a filter press tank (2) with an opening at the lower end is provided on the frame (1), a sealing cover (3) is hingedly connected to the lower end of the filter press tank (2), a feed pipe (5) is provided on the side of the filter press tank (2), a side wall of the filter press tank (2) below the feed tank is made of a water filter plate (6), a pressure plate (7) is vertically slidably provided in the filter press tank (2), a first telescopic mechanism (8) connected to the pressure plate (7) is vertically provided at the upper end of the filter press tank (2), a water supply ring (9) is provided at the upper end of the pressure plate (7), a plurality of water spraying assemblies (13) are provided on the side of the water supply ring (9), the water supply ring (9) is connected to a water supply hose (15), and a water supply mechanism (14) connected to the water supply hose (15) is provided at the upper end of the filter press tank (2).

2. The sludge dewatering equipment for sewage treatment according to claim 1, characterized in that: The water supply ring (9) is coaxially connected to the pressure plate (7), a reciprocating motor (10) is provided on the pressure plate (7), the reciprocating motor (10) is connected to a gear (11), and the water supply ring (9) is coaxially provided with a gear ring (12) meshing with the gear (11).

3. The sludge dewatering equipment for sewage treatment according to claim 1, characterized in that: The upper end surface of the pressure plate (7) is in the shape of a truncated cone with a high middle and low side surfaces.

4. The sludge dewatering equipment for sewage treatment according to claim 1, characterized in that: A second telescopic mechanism (4) is rotatably provided on the frame (1), and the upper end of the second telescopic mechanism (4) is rotatably connected to the sealing cover (3).

5. The sludge dewatering equipment for sewage treatment according to claim 4, characterized in that: The second telescopic mechanism (4) and the first telescopic mechanism (8) are both hydraulic telescopic rods.

6. The sludge dewatering equipment for sewage treatment according to claim 1, characterized in that: The water spray assembly (13) comprises three water spray heads, adjacent water spray heads are spaced 45 degrees apart, and the middle water spray head is arranged horizontally.

7. The sludge dewatering equipment for sewage treatment according to claim 1, characterized in that: A water collecting tray (16) with an open upper end is provided at the lower part of the side of the filter press tank (2), and a liquid outlet pipe (17) is provided at the lower end of the water collecting tray (16).

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