Water purification sludge discharge and sand removal device

Abstract

The utility model discloses a water purification sludge discharge and sand removal device which comprises a sludge collection pool, a sedimentation net arranged at the bottom of the sludge collection pool, an acceleration motor arranged at the top of the sludge collection pool, penetrating through the top of the sludge collection pool to be connected with a stirrer and penetrating through the sedimentation net to be connected with a sludge beating rod, flushing nozzles arranged on two sides of the bottom of the sludge collection pool, and bamboo-hat-shaped sand nets arranged at the bottoms of the flushing nozzles. Spiral desliming devices are arranged on two sides of the bamboo-hat-shaped sand screen; a plate filter press is arranged at the bottom of the bamboo-hat-shaped sand screen; sludge discharge plates are arranged on two sides of the filter press; a filter tank is arranged at the bottom of the plate filter press; the water pump conveys clean water to the cleaning nozzle through a pipeline. According to the utility model, a two-stage desliming mode of the spiral desliming device and the plate filter is adopted, so that sand removal and desliming are sequentially realized, the silt content in wastewater is effectively removed, and the silt is reasonably and effectively utilized.

Description

Technical Field

[0001] The utility model relates to a device for discharging and desilting purified water sludge, in particular to a device for discharging and desilting purified water sludge with a compact structure, good sludge dewatering effect and high sand lifting efficiency. Background Art

[0002] At present, after treating domestic water, urban water supply companies directly discharge the muddy water into the Yellow River without treatment, wasting a large amount of water and soil resources. At the same time, the muddy water contains rich minerals and trace elements. With the construction of national ecological civilization and the high-quality development of the Yellow River Basin, water purification plants along the Yellow River Basin are required not to discharge the sludge water without treatment. The large-scale storage of fine-grained sediment not only occupies valuable land resources, but also brings serious ecological environment and safety problems. With the increasingly strict national environmental protection policies, how to realize the large-scale resource utilization of sediment has become the key and difficult point in this research field. The utility model provides a device with a simple structure, convenient use, good sludge dewatering effect, high sand lifting efficiency and low cost, which effectively solves the technical bottleneck problems encountered in actual production. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a device for discharging and desilting purified water sludge, which has the characteristics of a compact structure, good sludge dewatering effect and high sand lifting efficiency.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a device for discharging and desilting purified water sludge, characterized in that: the device for discharging and desilting purified water sludge sequentially includes a sludge collecting tank with an upper opening from top to bottom, a primary sludge dewatering tank connected to the sludge collecting tank through a sedimentation net, a secondary sludge dewatering tank connected to the primary sludge dewatering tank through a bamboo hat-shaped sand net, and a filtration tank connected to the secondary sludge dewatering tank. A flushing device is arranged on the primary sludge dewatering tank at the side of the top surface of the primary sludge dewatering tank. A spiral sludge dewaterer is arranged in the primary sludge dewatering tank. A plate filter press is arranged in the secondary sludge dewatering tank. A sludge discharging plate for discharging sediment is arranged on the plate filter press and extends outside the secondary sludge dewatering tank.

[0005] Preferably, the sludge collecting tank is provided with a vertically arranged output shaft driven by an acceleration motor, the output shaft passes through the sedimentation net and extends into the primary sludge dewatering tank, and a sludge beating rod is arranged on the output shaft in the primary sludge dewatering tank.

[0006] Preferably, the sludge beating rod is horizontally arranged or inclined relative to the horizontal plane; a stirrer is arranged on the output shaft in the sludge collecting tank, and the stirrer is horizontally arranged or inclined relative to the horizontal plane.

[0007] Preferably, two of the flushing devices are symmetrically arranged on the left and right of the primary sludge removal tank. The two flushing devices face the bamboo hat-shaped sand screen, and the spiral sludge remover is arranged above the bamboo hat-shaped sand screen.

[0008] Preferably, two of the spiral sludge removers are symmetrically arranged on the left and right above the bamboo hat-shaped sand screen. The two spiral sludge removers are respectively located in the corresponding sunken areas on the bamboo hat-shaped sand screen, and the rotation speed of the spiral sludge remover is between 100 r / s and 220 r / s.

[0009] Preferably, the flushing device is connected to clean water or purified water through a pipeline, and the flushing device is a flushing nozzle that provides high-pressure water flow for a high-pressure water pump.

[0010] Preferably, at least one sludge discharge plate for discharging sediment is provided on the plate filter press and extends outside the secondary sludge removal tank; the water content of the sludge filtered by the plate filter press is between 5% and 7%.

[0011] Preferably, a clean water tank connected by a heavy metal filter screen is provided below the filter tank, and a metal sludge outlet located on one side of the filter tank is provided on the filter tank.

[0012] Preferably, a water pump driven by a motor and a water pipe connected to the water pump are provided on the clean water tank.

[0013] Preferably, the water purification sludge discharge and sand removal device is arranged on the support body.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model adopts a two-stage sludge removal method of a spiral sludge remover and a plate filter, realizes sand removal first and then sludge removal, effectively removes the sediment content in the wastewater, and rationally and effectively utilizes the sediment.

[0016] 2. After the sludge treated by this device is naturally dried in the sun, it is transported out for processing and utilization. Taking sediment as raw material, it can be directly or after treatment added to the soil, which can effectively improve the physical and chemical properties of the soil and realize the improvement and ecological restoration of the soil.

[0017] 3. Through this device, the muddy water is effectively utilized, achieving the purposes of soil and water conservation and resource utilization. Description of the Drawings

[0018] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0019] Figure 1 It is a structural schematic diagram of a water purification sludge discharge and sand removal device of the present utility model.

[0020] Figure 2It is a schematic structural diagram of the primary de-sludging tank in a water purification sludge sludge discharging and sand removing device of the present utility model.

[0021] Figure 3 It is a schematic structural diagram of a conical sand screen in a water purification sludge sludge discharging and sand removing device of the present utility model.

[0022] Figure 4 It is a schematic structural diagram of a screw de-sludging device in a water purification sludge sludge discharging and sand removing device of the present utility model.

[0023] Wherein: 1 - support body, 2 - sludge collecting tank, 3 - sedimentation net, 4 - acceleration motor, 5 - stirrer, 6 - mud beating rod, 7 - flushing nozzle, 8 - conical sand screen, 9 - screw de-sludging device, 10 - plate filter press, 11 - sludge discharging plate, 12 - filtration tank, 13 - metal sludge outlet, 14 - heavy metal filter screen, 15 - clean water tank, 16 - motor, 17 - primary de-sludging tank, 18 - secondary de-sludging tank. Specific implementation manner

[0024] The water purification sludge sludge discharging and sand removing device of the present utility model successively includes from top to bottom a sludge collecting tank 2 with an upper opening, a primary de-sludging tank 17 connected to the sludge collecting tank 2 through a sedimentation net 3, a secondary de-sludging tank 18 connected to the primary de-sludging tank 17 through a conical sand screen 8, and a filtration tank 12 connected to the secondary de-sludging tank 18. A flushing device is arranged on the primary de-sludging tank 17 on the side of the top surface of the primary de-sludging tank 17. A screw de-sludging device 9 is arranged in the primary de-sludging tank 17, and a plate filter press 10 is arranged in the secondary de-sludging tank 18. A sludge discharging plate 11 for discharging sediment is arranged on the plate filter press 10 and extends outside the secondary de-sludging tank 18. The screw de-sludging device and the plate filter press are conventional structures and will not be elaborated here. By adopting a two-stage de-sludging method of a screw de-sludging device 9 and a plate filter, sand removal is carried out first and then de-sludging, effectively removing the sediment content in the wastewater and making reasonable and effective use of the sediment. The sludge after being treated by this device is transported out for processing and utilization after natural drying. Taking sediment as raw material, it can be directly or after treatment added to the soil, which can effectively improve the physical and chemical properties of the soil and realize the improvement and ecological restoration of the soil.

[0025] The above-mentioned sludge collecting tank 2 is provided with a vertically arranged output shaft driven by an acceleration motor 4, the output shaft passes through the sedimentation net 3 and extends into the primary de-sludging tank 17, and a mud beating rod 6 located in the primary de-sludging tank 17 is arranged on the output shaft. The mud beating rod 6 is horizontally arranged or inclined relative to the horizontal plane; a stirrer 5 located in the sludge collecting tank 2 is arranged on the output shaft, and the stirrer 5 is horizontally arranged or inclined relative to the horizontal plane.

[0026] There are two flushing devices symmetrically arranged on the left and right of the above-mentioned primary de-sludging tank 17. The two flushing devices are facing the bamboo hat-shaped sand screen 8, and the screw de-sludging device 9 is arranged above the bamboo hat-shaped sand screen 8. There are two screw de-sludging devices 9 symmetrically arranged on the left and right above the bamboo hat-shaped sand screen 8. The two screw de-sludging devices 9 are respectively located in the corresponding sunken areas on the bamboo hat-shaped sand screen 8, and the rotation speed of the screw de-sludging device 9 is between 100 r / s and 220 r / s. The flushing device is connected to clean water or purified water through a pipeline, and the flushing device is a flushing nozzle 7 that provides high-pressure water flow for a high-pressure water pump.

[0027] On the plate and frame filter press 10 of the present utility model, there is at least one sludge discharge plate 11 extending outside the secondary de-sludging tank 18 for discharging sediment; the water content of the mud filtered by the plate and frame filter press 10 is between 5% and 7%. A clear water tank 15 connected by a heavy metal filter screen 14 is arranged below the filter tank 12, and a metal mud outlet 13 located on one side of the filter tank 12 is arranged on the filter tank 12. A water pump driven by a motor 16 and a water pipe connected to the water pump are arranged on the above-mentioned clear water tank 15; the purified water sludge discharge and sand removal device is arranged on the support body 1.

[0028] Specific implementation scheme:

[0029] During operation, the muddy water is sent into the mud collecting tank, and the accelerating motor at its top is turned on to drive the stirrer for preliminary mixing and precipitation to remove impurities such as large-particle sand grains. After passing through the settling screen, the mud and sand are dispersed by the mud pushing rod. After being washed by the high-pressure nozzle, a large amount of sludge enters the screw de-sludging device. After the muddy water passes through the plate and frame filter press, a part is discharged through the sludge discharge plate, and a part enters the heavy metal filter screen. The mud containing heavy metals is discharged through the metal mud outlet, and the clear water enters the clear water tank and is recycled by the water pump.

[0030] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A sludge discharging and sand removing device for purified water, characterized in that: The sludge discharging and sand removing device for purified water successively includes a sludge collecting tank with an upper opening, a primary sludge dewatering tank connected to the sludge collecting tank through a sedimentation net, a secondary sludge dewatering tank connected to the primary sludge dewatering tank through a bamboo hat-shaped sand net, and a filtration tank connected to the secondary sludge dewatering tank. A flushing device is arranged on the primary sludge dewatering tank at the side of the top surface of the primary sludge dewatering tank. A spiral sludge dewaterer is arranged in the primary sludge dewatering tank. A plate filter press is arranged in the secondary sludge dewatering tank. A sludge discharging plate for discharging sediment is arranged on the plate filter press and extends outside the secondary sludge dewatering tank.

2. The sludge discharging and sand removing device for purified water as described in claim 1, wherein: The sludge collecting tank is provided with an output shaft driven by an accelerating motor and vertically arranged. The output shaft passes through the sedimentation net and extends into the primary sludge dewatering tank. A sludge beating rod is arranged on the output shaft in the primary sludge dewatering tank.

3. The sludge discharging and sand removing device for purified water according to claim 2, wherein: The sludge beating rod is horizontally arranged or inclined relative to the horizontal plane; a stirrer is arranged on the output shaft in the sludge collecting tank. The stirrer is horizontally arranged or inclined relative to the horizontal plane.

4. The sludge discharging and sand removing device for purified water according to claim 1, characterized in that: Two of the flushing devices are symmetrically arranged on the left and right of the primary sludge dewatering tank. The two flushing devices face the bamboo hat-shaped sand net. The spiral sludge dewaterer is arranged above the bamboo hat-shaped sand net.

5. The sludge discharging and sand removing device for purified water according to claim 4, characterized in that: Two of the spiral sludge dewaterers are symmetrically arranged above the bamboo hat-shaped sand net. The two spiral sludge dewaterers are respectively located in the corresponding concave areas on the bamboo hat-shaped sand net. The rotation speed of the spiral sludge dewaterer is between 100 r / s and 220 r / s.

6. The sludge discharging and sand removing device for purified water according to claim 4, characterized in that: The flushing device is connected to clean water or purified water through a pipeline. The flushing device is a flushing nozzle that provides high-pressure water flow by a high-pressure water pump.

7. The sludge discharging and sand removing device for purified water according to claim 1, wherein: At least one sludge discharging plate for discharging sediment is arranged on the plate filter press and extends outside the secondary sludge dewatering tank; the water content of the sludge filtered by the plate filter press is between 5% and 7%.

8. The sludge discharging and sand removing device for purified water according to claim 1, wherein: A water tank is arranged below the filtration tank and is connected through a heavy metal filter net. A metal sludge outlet is arranged on one side of the filtration tank.

9. The sludge discharging and sand removing device for purified water according to claim 8, wherein: A water pump driven by a motor and a water pipe connected to the water pump are arranged on the water tank.

10. A sludge discharging and sand removing device for purified water as described in claim 1, characterized in that: The sludge discharging and sand removing device for purified water is arranged on a support body.

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