CN211302191U - Sand filtering device - Google Patents

Abstract

The application discloses a sand filtering device in the technical field of filtering equipment, which comprises a sand filtering box and a sand washing mechanism, wherein the sand washing mechanism comprises a closed sand washing box, the sand washing box is fixedly connected to the inner top of the sand filtering box, the top of the sand filtering box is provided with an air suction pump, an air inlet of the air suction pump is connected with an air inlet pipe, one end, far away from the air suction pump, of the air inlet pipe sequentially penetrates through the sand filtering box and the sand washing box and is positioned at the inner top of the sand washing box, the upper end of the sand washing box is provided with a sand suction pipe, the other end of the sand suction pipe is positioned at the inner bottom of the sand filtering box, the bottom of a containing cavity is provided with a sand discharge hole, and the sand; the top fixedly connected with downward sloping guide plate of baffle, the lower end of guide plate and the inner wall fixed connection who washes the sand box, wash and be equipped with the drain on the tank wall of sand box, fixedly connected with puddler on the output shaft of waterproof motor. The problem of current sand filter self-cleaning effect poor has been solved to this scheme, does not thoroughly influence the filter effect to the filter sand washing.

Description

Sand filtering device

Technical Field

The utility model relates to a filtration equipment technical field, concretely relates to sand filter.

Background

The quicksand filter is the most economic and effective solution for removing solid suspended matters and other impurities in water treatment and sewage purification, and can effectively remove suspended particles, colloid substances and other impurities in the wastewater.

At present, in the quicksand filter used in the existing market, after sand in the filter is used for a period of time, due to accumulation of dirt, the filtering effect is reduced, and therefore the sand needs to be cleaned. Some sand filter units with automatic cleaning function feed water reversely through a back washing pump, and simultaneously feed compressed air into the filter, and the turbulent flow generated by air-water mixing drives the sand filter to move irregularly, so that the pollutants adhered to the sand filter are stripped off, and the cleaning purpose is achieved. However, although this cleaning method can clean the filter sand, the cleaning effect is poor, and many contaminants are still attached to the filter sand, so that the filtering effect is poor when the filter sand is filtered again, and the cleaning interval of the second time is shortened because some contaminants are already carried on the filter sand.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sand filter to it is poor to solve current sand filter self-cleaning effect, washs the problem that thoroughly influences the filter effect to the filter sand.

In order to solve the technical problem, the utility model provides a following technical scheme: a sand filtering device comprises a sand filtering box and a sand washing mechanism, wherein filtering sand is filled in the sand filtering box, a water inlet pipe is arranged in the middle of the sand filtering box, one end of the water inlet pipe is positioned outside the sand filtering box, the other end of the water inlet pipe is positioned in the sand filtering box, and a water outlet pipe is arranged at the top of the sand filtering box;

the sand washing mechanism comprises a closed sand washing box, the sand washing box is fixedly connected to the inner top of the sand filtering box, an air suction pump is arranged at the top of the sand filtering box, an air inlet of the air suction pump is connected with an air inlet pipe, one end, far away from the air suction pump, of the air inlet pipe sequentially penetrates through the sand filtering box and the sand washing box and is located at the inner top of the sand washing box, a vertical partition plate is arranged in the sand washing box to divide the sand washing box into a containing cavity and a sewage discharge cavity, a sand suction pipe is arranged at the upper end of the sand washing box, one end of the sand suction pipe is located above the containing cavity, the other end of the sand suction pipe penetrates through the box wall of the sand washing box and is located at the inner bottom of the sand filtering box, a sand discharge hole is; the top end of the partition board is fixedly connected with a guide plate which inclines downwards, the lower end of the guide plate is fixedly connected with the inner wall of the sand washing box, a drain outlet is arranged on the box wall of the sand washing box and is positioned at the lower end of the guide plate, the drain outlet is communicated with a drain pipe, and one end of the drain pipe, which is far away from the drain outlet, penetrates through the sand filter box and is positioned outside the sand filter box; the bottom that holds the chamber is equipped with the vertical ascending waterproof motor of output shaft, and the output shaft of waterproof motor passes and is located the intracavity and fixedly connected with puddler that hold at the bottom of the chamber that holds the chamber.

The utility model discloses the theory of operation: when the sewage filter is used, sewage to be filtered is discharged into the sand filter box through the water inlet pipe, the sewage is filtered through filter sand in the sand filter box, when pollutants attached to the filter sand are excessive, the suction pump is started, the sand washing box is closed, the air inlet pipe communicated with the suction pump penetrates through the sand washing box and is positioned in the sand washing box, the upper end of the sand washing box is provided with the sand suction pipe, one end of the sand suction pipe is positioned above the accommodating cavity, and the other end of the sand suction pipe is positioned at the inner bottom of the sand filter box, so that negative pressure is formed in the sand washing box when the suction pump is started, suction force generated by the negative pressure simultaneously sucks the filter sand and water in the sand filter box into the accommodating cavity through the sand suction pipe, at the moment, the waterproof motor is started, the stirring rod is driven to rotate when the waterproof motor operates, the filter sand in the accommodating cavity is stirred and cleaned when the stirring rod rotates, the pollutants are separated from the filter sand, and the pollutants are deposited at, and the pollutant quality can float in aqueous lighter, and when the sand suction pipe inhales the water and the filter sand that hold in the chamber and progressively increase, sewage spills over from holding the top in chamber, then discharges from the blow off pipe along the guide plate. At the moment, the sealing mechanism is started, when the sealing mechanism operates, the sand discharge hole is opened, and the cleaned filter sand falls into the sand filter box again under the action of gravity.

The utility model has the advantages that: this scheme makes the inside production negative pressure that washes the sand box through the aspirator pump, and then inhales simultaneously with water through the negative pressure and holds the chamber with straining sand, and the operation of rethread waterproof machine drives the puddler and washs straining sand, makes attached to pollutant and straining sand separation suspension on straining sand in the aquatic, rises through the surface of water that constantly inspiratory straining sand and water messenger held in the chamber, and then will have the sewage discharge of pollutant. The beneficial effects of automatically cleaning the filter sand when filtering sewage are achieved, and meanwhile, the waterproof motor drives the stirring rod to clean the filter sand, so that the friction force between the filter sand and the filter sand is increased, the filter sand is cleaned more thoroughly and cleanly, and the filtering effect is ensured.

Further, the bottom of the sand filter box is in a conical shape with the diameter gradually reduced. Its purpose makes the filter sand relatively concentrate when the bottom of sand filter box through this kind of setting, is convenient for inhale the sand pipe and absorbs the filter sand.

Furthermore, the outer wall of the sand filter box is fixedly connected with a high-pressure air pump, an air outlet of the high-pressure air pump is communicated with an air-liquid pipe, and the air-liquid pipe sequentially penetrates through the sand filter box and the sand washing box and is located in the accommodating cavity. Its purpose is through letting in the air in the high compression pump to holding the chamber for the water in holding the chamber is billowed, and then improves the cleaning performance to the filter sand.

Further, the filter sand is quartz sand. The quartz sand filter has the advantages that the quartz sand filter effect is good, and pollutants are easy to fall off during cleaning.

Drawings

Fig. 1 is a schematic structural view of a sand filtration device of the present invention;

fig. 2 is an enlarged view of a in fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises an air suction pump 1, an air inlet pipe 2, a sand washing box 3, a guide plate 4, a valve 5, a blow-off pipe 6, a partition plate 7, quartz sand 8, a sand filter box 9, a water inlet pipe 10, a sand suction pipe 11, a waterproof motor 12, a stirring rod 13, a high-pressure air pump 14, a water outlet pipe 15, a gas-liquid pipe 16, an electromagnet 17, a spring 18, a baffle plate 19 and a sand discharge hole 20.

Example 1 is substantially as shown in figure 1:

the utility model provides a sand filtration filter equipment, including sand filter box 9 and sand washing mechanism, the intussuseption of sand filter box 9 is filled with quartz sand 8, the middle part of sand filter box 9 is equipped with inlet tube 10, the one end of inlet tube 10 is located outside sand filter box 9, the other end of inlet tube 10 is located sand filter box 9, and this end intercommunication has horizontal water distributor, the equipartition has a plurality of wash ports on the water distributor, the top of sand filter box 9 is equipped with outlet pipe 15, outlet pipe 15 communicates with the inside of sand filter box 9, the bottom of sand filter box 9 is the toper form that the diameter extremely reduced from top to bottom gradually.

The sand washing mechanism comprises a closed sand washing box 3, the sand washing box 3 is welded at the inner top of the sand filtering box 9, the top of the sand filtering box 9 is provided with an air suction pump 1, an air inlet of the air suction pump 1 is connected with an air inlet pipe 2, one end, far away from the air suction pump 1, of the air inlet pipe 2 sequentially penetrates through the sand filtering box 9 and the sand washing box 3 to be located at the inner top of the sand washing box 3, a vertical partition plate 7 is arranged in the sand washing box 3, and the partition plate 7 divides the sand washing box 3 into a containing cavity and a pollution discharge cavity. The outer wall of the sand filter box 9 is fixedly connected with a high-pressure air pump 14, an air outlet of the high-pressure air pump 14 is communicated with an air-liquid pipe 16, and the air-liquid pipe 16 sequentially penetrates through the sand filter box 9 and the sand washing box 3 and is located in the accommodating cavity. The gas-liquid pipe 16 is communicated with a water pipe which is positioned outside the sand filter box 9.

The upper end of wash sand box 3 is equipped with sand-sucking pipe 11, the one end of sand-sucking pipe 11 is located the top that holds the chamber, the tank wall that the other end of sand-sucking pipe 11 passed wash sand box 3 is located the interior bottom of sand filter box 9, the bottom that holds the chamber is equipped with sand discharge hole 20, be equipped with the closing mechanism who is used for sealing sand discharge hole 20 on the sand discharge hole 20, closing mechanism includes electro-magnet 17 and the metal baffle 19 that can be attracted by magnet, electro-magnet 17 screwed connection is in the outer bottom of wash sand box 3, metal baffle 19 lateral sliding connects the outer bottom at wash sand box 3, and wash sand box 3 is located sand discharge hole 20 under, the welding has spring 18 between metal baffle 19 and the electro-magnet 17. The top welding of baffle 7 has the guide plate 4 of downward sloping, and the lower end of guide plate 4 and the inner wall welding of sand washing case 3 are equipped with the drain on the tank wall of sand washing case 3, and the drain is located the lower end of guide plate 4, and the drain intercommunication has blow off pipe 6, and the one end that the drain was kept away from to blow off pipe 6 passes sand filter box 9 and is located outside the sand filter box 9 and be equipped with valve 5. The bottom that holds the chamber is equipped with the vertical ascending waterproof motor 12 of output shaft, and the output shaft of waterproof motor 12 passes and is located and hold the intracavity and weld puddler 13 at the chamber bottom that holds the chamber.

The specific implementation process is as follows:

when the sewage filter is used, sewage to be filtered is discharged into the sand filter box 9 through the water inlet pipe 10, the sewage is filtered through the quartz sand 8 in the sand filter box 9, when pollutants attached to the quartz sand 8 are too much and need to be cleaned, the suction pump 1 is started, because the sand washing box 3 is closed, the air inlet pipe 2 communicated with the suction pump 1 penetrates through the sand washing box 3 and is positioned in the sand washing box 3, the upper end of the sand washing box 3 is provided with the sand suction pipe 11, one end of the sand suction pipe 11 is positioned above the accommodating cavity, and the other end is positioned at the inner bottom of the sand filter box 9, when the suction pump 1 is started, negative pressure is formed in the sand washing box 3, suction force generated by the negative pressure sucks the quartz sand 8 and water in the sand filter box 9 into the accommodating cavity through the sand suction pipe 11, at the moment, the waterproof motor 12 is started, the stirring rod 13 is driven to rotate when the waterproof motor 12 runs, the stirring rod 13 stirs and cleans the quartz sand 8 in the, separating the pollutant from the quartz sand 8, sinking the bottom of the holding cavity by the mass of the quartz sand 8, floating the pollutant in water by the mass, overflowing the sewage from the top of the holding cavity when the sand suction pipe 11 sucks the water and the quartz sand in the holding cavity to gradually increase, opening the valve 5, and discharging the sewage from the blow-off pipe 6 along the guide plate 4. At the moment, the closing mechanism is started, when the closing mechanism operates, the metal baffle plate 19 is moved by the attraction of the electromagnet 17, the sand discharge hole 20 is exposed, the spring 18 is in a compressed state, the cleaned quartz sand 8 falls into the sand filter box 9 through the sand discharge hole 20 under the action of gravity, when the closing mechanism stops operating, the metal baffle plate 19 loses the attraction of the electromagnet 17, the spring 18 is restored to a natural state, and the metal baffle plate 19 is pushed back to the original position through the elasticity of the spring 18.

Example 2:

the difference from example 1 is that: the high pressure air pump 14 is started to introduce air into the gas-liquid pipe 16 during sand washing, water is injected into the gas-liquid pipe 16 through a water pipe, air is introduced into the accommodating cavity through the high pressure air pump 14, water in the accommodating cavity is enabled to tumble, and then the cleaning effect on sand filtering is improved. The water of pouring into simultaneously can increase the water yield that holds in the chamber, makes the sewage that holds in the chamber can overflow fast and take the pollutant out, has increased the water yield that holds in the chamber simultaneously and has made puddler 13 better to the cleaning performance of quartz sand 8 when rotating.

Claims (4)

1. The utility model provides a sand filtration filter equipment which characterized in that: the sand filter comprises a sand filter box and a sand washing mechanism, wherein filter sand is filled in the sand filter box, a water inlet pipe is arranged in the middle of the sand filter box, one end of the water inlet pipe is positioned outside the sand filter box, the other end of the water inlet pipe is positioned in the sand filter box, and a water outlet pipe is arranged at the top of the sand filter box;

the sand washing mechanism comprises a closed sand washing box, the sand washing box is fixedly connected to the inner top of the sand filtering box, an air suction pump is arranged at the top of the sand filtering box, an air inlet of the air suction pump is connected with an air inlet pipe, one end, far away from the air suction pump, of the air inlet pipe sequentially penetrates through the sand filtering box and the sand washing box and is located at the inner top of the sand washing box, a vertical partition plate is arranged in the sand washing box to divide the sand washing box into a containing cavity and a sewage discharge cavity, a sand suction pipe is arranged at the upper end of the sand washing box, one end of the sand suction pipe is located above the containing cavity, the other end of the sand suction pipe penetrates through the box wall of the sand washing box and is located at the inner bottom of the sand filtering box, a sand discharge hole is; the top end of the partition board is fixedly connected with a guide plate which inclines downwards, the lower end of the guide plate is fixedly connected with the inner wall of the sand washing box, a drain outlet is arranged on the box wall of the sand washing box and is positioned at the lower end of the guide plate, the drain outlet is communicated with a drain pipe, and one end of the drain pipe, which is far away from the drain outlet, penetrates through the sand filter box and is positioned outside the sand filter box; the inner bottom of the accommodating cavity is provided with a waterproof motor with an output shaft which vertically faces upwards, and the output shaft of the waterproof motor penetrates through the cavity bottom of the accommodating cavity to be located in the accommodating cavity and fixedly connected with a stirring rod.

2. A sand filter unit according to claim 1, wherein: the bottom of the sand filter box is in a conical shape with the diameter gradually reduced.

3. A sand filter unit according to claim 2, wherein: the sand filter box is characterized in that a high-pressure air pump is fixedly connected to the outer wall of the sand filter box, an air outlet of the high-pressure air pump is communicated with an air-liquid pipe, and the air-liquid pipe sequentially penetrates through the sand filter box and the sand washing box and is located in the accommodating cavity.

4. A sand filter unit according to claim 3, wherein: the filter sand is quartz sand.

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