CN204709896U - Active sand filter - Google Patents

Abstract

The utility model relates to an active sand filter, which comprises a casing, a dirty sand discharge pipe is installed at the center of the casing, an air lift pump is connected to one end of the dirty sand discharge pipe, and an air lift pump is connected to the dirty sand discharge pipe. The other end of the sand washing device is also connected to the outlet pipe for flushing and suction water respectively. The sand washing device is driven and controlled by the control mechanism; The water distributor communicates with one end of the raw water inlet pipe, and also communicates with the filtrate discharge port at the upper part of the housing. The utility model is simple in structure and easy to use. It can work continuously for 24 hours without stopping for backwashing. The utility model has low operating costs and does not need high-lift and large-flow backwashing pumps. Intermittent control such as TIS and LIS can be used. The operation mode reduces the operation cost. The utility model has no rotating parts during operation, low failure rate and low maintenance cost.

Description

Active Sand Filter

technical field

The utility model relates to filtering equipment, in particular to an active sand filter.

Background technique

At present, the active sand filter is a continuous filtration equipment integrating flocculation, clarification and filtration, which can effectively remove sulfur and phosphorus in water. However, the existing filter has a single structure, which is difficult to meet the needs of actual use.

Utility model content

In view of the above existing problems, the applicant has carried out research and improvement to provide an active sand filter, which has the advantages of compact structure, low maintenance and maintenance costs, low power loss, and does not require special cleaning water.

The technical scheme adopted in the utility model is as follows:

An active sand filter, including a shell, a dirty sand discharge pipe is installed at the center of the shell, an air lift pump is connected to one end of the dirty sand discharge pipe, and an air lift pump is connected to the other end of the dirty sand discharge pipe. The sand washer and the flushing water outlet pipe are respectively connected. The sand washer is driven and controlled by the control mechanism; It communicates with one end of the raw water inlet pipe, and also communicates with the filtrate discharge port at the upper part of the housing.

As a further improvement of the above technical solution:

The sand washer is composed of a plurality of curved pipes, and the curved pipes surround the outer periphery of the dirty sand discharge pipe along the circumferential direction.

The beneficial effects of the utility model are as follows:

The utility model is simple in structure and easy to use. It can work continuously for 24 hours without stopping for backwashing. The utility model has low operating costs and does not need high-lift and large-flow backwashing pumps. Intermittent control such as TIS and LIS can be used. The operation mode reduces the operation cost. The utility model has no rotating parts during operation, low failure rate and low maintenance cost. It does not require facilities such as flocculation tanks and clarification tanks. The utility model has high filter utilization rate and low one-time investment. If the material is cleaned in time, the head loss can be reduced to 0.5m. The filter material is cleaned in a timely manner to ensure a stable and efficient filtration effect, so that the water quality of the effluent does not fluctuate periodically.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among them: 1. Water distributor; 2. Filtrate discharge port; 3. Dirty sand; 4. Air lift pump; 5. Sand washer; 6. Curved pipe; 7. Flushing water outlet pipe; 8. Filter material; 9. Control mechanism; 10. Housing; 11. Dirty sand discharge pipe; 12. Raw water inlet pipe.

Detailed ways

Below in conjunction with accompanying drawing, illustrate the specific embodiment of the present utility model.

As shown in Figure 1, the active sand filter of the present embodiment includes a housing 10, and a dirty sand discharge pipe 11 is installed at the center of the housing 10, and an air lift pump 4 is connected to one end of the dirty sand discharge pipe 11. The other end of the sand discharge pipe 11 is connected to the sand washer 5 and the flushing water outlet pipe 7 respectively, and the sand washer 5 is driven and controlled by the control mechanism 9; The water device 1 and the water distributor 1 communicate with one end of the raw water inlet pipe 12 , and communicate with the filtrate discharge port 2 at the top of the housing 10 . The sand washer 5 is composed of a plurality of curved pipes 6, and the curved pipes 6 surround the outer periphery of the dirty sand discharge pipe 11 along the circumferential direction.

Concrete work process of the present utility model is as follows:

As shown in Figure 1, the raw water enters the housing 10 from the raw water inlet pipe 12, and the raw water is evenly distributed in the housing 10 through the water distributor 1, as shown by the arrow in Figure 1, the raw water flows upstream through the housing 10 The sand layer is filtered to form a filtrate, and the filtrate is discharged from the filtrate discharge port 2, and the filter material that sinks into the bottom of the housing 10 and retains pollutants is discharged upward from the dirty sand discharge pipe 11 to the top of the housing 10 by the air lift pump 4. At this time, the control mechanism 9 controls the start of the sand washer 5, and the sand washer cleans the above-mentioned filter material that retains pollutants, and the polluted water is directly discharged through the flushing water outlet pipe 7, while the clean water continues to be discharged from the filtrate discharge port 2 , the cleaning water used when cleaning the filter material with intercepted matter is directly taken from the filtrate inside the housing 10, no special cleaning water is required,

The above description is an explanation of the utility model, not a limitation of the utility model. For the limited scope of the utility model, refer to the claims. Without violating the basic structure of the utility model, the utility model can be modified in any form.

Claims (2)

1. active sand filter, it is characterized in that: comprise housing (10), dirty sand discharge pipe (11) is installed on described housing (10) inside center place, air lift (4) is connected in one end of described dirty sand discharge pipe (11), also be communicated with sand-washing device (5) and flushing water outlet (7) respectively at the other end of described dirty sand discharge pipe (11), described sand-washing device (5) is by controlling organization (9) drived control; In the periphery of described dirty sand discharge pipe (11), in the inside of described housing (10), water-locator (1) is also installed, described water-locator (1) is communicated with one end of former water water inlet pipe (12), is also communicated with filtrate discharge mouth (2) on the top of described housing (10).

2. active sand filter as claimed in claim 1, it is characterized in that: described sand-washing device (5) is made up of many curved tubes (6), described curved tube (6) is along the circumferential direction surrounded on the periphery of dirty sand discharge pipe (11).