CN216764556U - Water for boiler removes ferro-manganese and anti-belt cleaning device - Google Patents

Abstract

The utility model discloses a device for removing iron and manganese in boiler water and backwashing, which comprises an aeration tank and a filtration backwashing tank, wherein a rotary stirring shaft driven by a motor is arranged in the aeration tank, a stirring paddle is arranged on the stirring shaft, a filter membrane filtering layer is arranged in the filtration backwashing tank, a backwashing water outlet is arranged on the side wall of the filtration backwashing tank at the upper end of the filter membrane filtering layer in the filtration backwashing tank, the stirring paddle is a stainless steel mesh sheet with mesh through holes, a through hole is arranged on the side wall of the filtration backwashing tank at the upper end of the filter membrane filtering layer opposite to the backwashing water outlet in the filtration backwashing tank, a push rod is inserted into the filtration backwashing tank from the through hole, a pushing scraper is arranged at the front end of the extended push rod, and the pushing scraper is in contact with the upper end face of the filter membrane for scraping off filtration dirt on the upper end face of the filter membrane filtering layer. The utility model can further break the generated bubbles when disturbing the water flow by improving the stirring blades, thereby improving the gas explosion efficiency in the aeration tank.

Description

Water for boiler removes ferro-manganese and anti-belt cleaning device

Technical Field

The utility model relates to a device for removing iron and manganese and backwashing boiler water.

Background

The preparation of demineralized water is an essential link in thermal power plants, steel plants, chemical plants, cement plants, etc., and iron and manganese ions are one of scale-forming components in boiler water and corrode pipelines. Therefore, the removal of the iron and manganese ions is related to the safety, reliability, stability and working efficiency of the boiler operation. The method mainly comprises the steps of aeration and filtration treatment of iron and manganese ions, wherein the aeration aims to oxidize bivalent iron and manganese ions in underground water into non-soluble trivalent iron and tetravalent manganese, and flocculating particles are filtered on a filter membrane on the surface of a manganese sand filter material by adding a flocculating agent, so that the key for removing the iron and manganese ions is sufficient aeration and thorough backwashing.

At present, the stirring structure that uses in the aeration tank of device that removes iron and manganese ions has the problem of exploding the gas inefficiency to anti-washing forms the flocculent precipitate on the filter material surface and influences anti-cleaning efficiency, often needs the manual work to go down the groove in the clearance waste time and energy.

Disclosure of Invention

The utility model provides a device for removing iron and manganese in boiler water and backwashing, which can further break bubbles generated when water flow is disturbed through improvement of a stirring paddle, improves the gas explosion efficiency in an aeration tank, and can clear flocculent precipitates formed on the surface of a filter material at any time and flow out through an output pipeline to improve the backwashing efficiency by arranging a sweeping and pushing scraper on the surface of a filter membrane in a backwashing tank.

In order to realize the purpose, the technical scheme of the utility model is as follows:

the utility model provides a boiler water removes ferro-manganese and anti-belt cleaning device, including aeration tank and filtration backwashing tank, set up the rotatory (mixing) shaft that is driven by the motor in the aeration tank, be provided with stirring paddle on the (mixing) shaft, the aeration tank upper end is provided with the overflow mouth, the overflow mouth passes through the last port of tube coupling filtration backwashing tank, be provided with the filter membrane filter layer in filtering backwashing tank, filter backwashing tank lateral wall at filter membrane filter layer lower extreme is provided with drainage water outlet and backwashing water inlet interface, backwashing water inlet interface connects the backwashing coil pipe that filter membrane filter layer lower extreme set up in filtering backwashing tank, backwashing coil pipe upwards is provided with water outlet nozzle, filter backwashing tank in the filtration backwashing tank at filter membrane filter layer upper end filtration backwashing tank lateral wall is provided with the backwashing water discharge port, wherein, stirring paddle is the stainless steel sheet that has netted thru hole, filter backwashing tank in filtering backwashing tank upper end and the filtration backwashing tank lateral wall relative with backwashing water discharge port are provided with backwashing water discharge port The filter backwashing device comprises a through hole, a push rod is inserted into the filter backwashing tank from the through hole, a pushing scraper is arranged at the front end of the inserted push rod, the pushing scraper is in contact with the upper end face of a filter membrane filter layer and is used for scraping filter dirt on the upper end face of the filter membrane filter layer, and the filter dirt is discharged from a backwashing water outlet along with backwashing water.

The scheme is further as follows: stirring paddle leaf has a plurality ofly, and a plurality of stirring paddle leaf vertically encircles the interval setting of staggering along the (mixing) shaft, stirring paddle leaf's netted through hole face is the plane, and netted through hole plane is parallel with the (mixing) shaft.

The scheme is further as follows: the stirring blade is a stainless steel mesh with 500 meshes of mesh-shaped through holes.

The scheme is further as follows: the contact surface of the pushing scraper and the upper end surface of the filter membrane filtering layer is provided with a brush.

The scheme is further as follows: the filtering backwashing tank is a rectangular tank, and the width of the pushing scraper is consistent with that of the filter membrane filtering layer.

The utility model has the advantages that: through the improvement to stirring paddle leaf, can further smash the bubble that produces when disturbance rivers, improve the aeration efficiency in the aeration tank, set up in the anti-washing tank and sweep away the promotion scraper blade on the surface of filter membrane filter layer, can clear up the filter material surface at any time and form flocculent precipitate and flow through the output pipeline, solved the filter residue at the filter material surface accumulation and the problem that the filter material anti-cleaning rate is low.

The utility model is described in detail below with reference to the figures and examples.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Detailed Description

A boiler water iron and manganese removal and backwashing device is shown in figure 1, and comprises an aeration tank 1 and a filtering backwashing tank 2, wherein the aeration tank is provided with a rotary stirring shaft 4 driven by a motor 3, the stirring shaft is provided with stirring blades 5, the bottom of the aeration tank is provided with an oxygen coil pipe 6, the oxygen coil pipe is provided with an oxygen outlet, the side wall of the bottom of the aeration tank is respectively provided with a water inlet 101 to be treated and an oxygen inlet interface 102, a connecting pipe at the water inlet 101 is provided with a water inlet valve 7, the oxygen inlet interface is connected with the oxygen coil pipe 6 in the aeration tank, the oxygen inlet interface 102 is connected with an oxygen source outside the aeration tank, an air inlet valve 8 is arranged on an air pipe between the oxygen inlet interface 102 and the oxygen source, and the upper end of the aeration tank is provided with an overflow port 103, the overflow port 103 is connected to the upper port of the filtration and backwashing tank through the pipeline 9, and the dissolved water fully dissolved with oxygen flows into the filtration and backwashing tank 2 through the overflow port 103 and the pipeline 9, or naturally, may be sent to the filtration and backwashing tank 2 through the water suction pump 10.

Similarly, in the same way as the traditional filtration backwashing mode, a filter membrane filtering layer 11 is arranged in the filtration backwashing tank 2, a filtered water outlet 201 and a backwashing water inlet port 202 are arranged on the side wall of the filtration backwashing tank at the lower end of the filter membrane filtering layer 11, a water outlet valve 12 is arranged on a water outlet pipe connected with the filtered water outlet 201, and a backwashing water inlet valve 13 is arranged on a backwashing water inlet pipe connected with the backwashing water inlet port 202; the backwashing water inlet port 202 is connected to a backwashing coil 14 arranged at the lower end of the filter membrane filtration layer in the filtration backwashing tank 2, the backwashing coil 14 is provided with a water outlet nozzle 1401 upward, a backwashing water outlet 203 is arranged on the side wall of the filtration backwashing tank at the upper end of the filter membrane filtration layer 11 in the filtration backwashing tank 2, a drain valve 15 is arranged on a drain pipe connected with the backwashing water outlet 203, and a flocculating agent inlet 204 is arranged at the upper end of the filtration backwashing tank.

Bubbles are generated in the stirring process of the traditional stirring paddle, and the bubbles in the water prevent the combination of oxygen and iron and manganese ions in the water, so that the treatment efficiency is reduced; therefore, in order to not only accelerate the flow of water by stirring but also eliminate air bubbles, in the embodiment, the stirring blades are stainless steel mesh sheets with mesh-shaped through holes, and air can be eliminated well through practice. Meanwhile, in order to improve the cleaning of the filter dirt on the upper end surface of the filter layer of the filter membrane in the back washing process; in the filtering backwashing tank of the present embodiment, a through hole 205 is formed in the side wall of the filtering backwashing tank, which is opposite to the backwashing water outlet, at the upper end of the filter membrane filtration layer, a push rod 16 is inserted into the filtering backwashing tank from the through hole 205, a push scraper 17 is arranged at the front end of the inserted push rod, the push scraper 17 is in contact with the upper end surface of the filter membrane filtration layer 11 for scraping off the filtration dirt on the upper end surface of the filter membrane filtration layer 11, and then the filtration dirt is discharged from the backwashing water outlet 203 along with the backwashing water, and of course, a sealing rubber ring is arranged between the push rod 16 and the through hole 205 for sealing treatment.

Wherein, as shown in fig. 1: the stirring device is characterized in that the stirring blades are arranged in a staggered manner at intervals along the longitudinal direction of the stirring shaft, as shown in figure 1, four rows (three visible rows are shown in the figure) are arranged in a crossed manner around the stirring shaft, the mesh-shaped through hole surfaces of the stirring blades are planes, and the mesh-shaped through hole planes are parallel to the stirring shaft. The stirring blade is a stainless steel mesh with 500 meshes of mesh-shaped through holes.

To prevent damage to the filtration layer of the filter membrane: the brush 1701 is arranged on the contact surface of the pushing scraper and the upper end surface of the filter membrane filtering layer.

Wherein: the filtering backwashing tank is a rectangular tank, and the width of the pushing scraper is consistent with that of the filter layer of the filter membrane.

Underground water is pumped into the aeration tank 1 through the water inlet 101 by a pump, then the motor 3 is started to drive the rotary stirring shaft 4 to rotate, meanwhile, oxygen is input through the oxygen input air inlet interface 102, and the rotary stirring shaft 4 drives the stirring of the stirring paddle blade 5 to ensure that bivalent iron and manganese ions in the water are fully contacted with the oxygen to be oxidized into high-valence iron and manganese. The water after aeration enters the filtration backwashing tank 2 through the overflow port 103 and the pipeline 9, a flocculating agent is periodically added into the flocculating agent injection port 204, and high-valence iron and manganese ions form flocculent precipitate on the surface of the filtration membrane filtration layer 11 to be intercepted. The filtered water is output through the filtered water outlet 201. When the water outlet flow or the water quality does not reach the standard, stopping the work of the aeration tank, closing the water outlet valve 12, then opening the flushing water inlet valve 13 to carry out backwashing on the filter membrane filtering layer 11, brushing and sweeping the solid floccules on the surface of the filter membrane filtering layer 11 through the push rod 16 and the pushing scraper 17, and discharging the brushed filtering dirt from the backwashing water outlet 203 along with backwashing water.

Above-mentioned boiler water removes ferro-manganese and anti-belt cleaning device embodiment is through the improvement to stirring paddle leaf, can further smash the bubble that produces when disturbance rivers, has improved the aeration efficiency in the aeration tank, sets up on the surface of filter membrane filter layer in the anti-washing tank and sweeps away the promotion scraper blade, can clear up the filter material surface at any time and form flocculent precipitate and leave through output pipeline, has solved the filter residue at the filter material surface accumulation and the problem that the filter material anti-cleaning rate is low.

Claims (5)

1. A device for removing iron and manganese and backwashing boiler water comprises an aeration tank and a filtering backwashing tank, wherein a rotary stirring shaft driven by a motor is arranged in the aeration tank, a stirring paddle blade is arranged on the stirring shaft, the upper end of the aeration tank is provided with an overflow port, the overflow port is connected with the upper end port of the filtering backwashing tank through a pipeline, a filter membrane filtering layer is arranged in the filtering backwashing tank, the side wall of the filtering backwashing tank at the lower end of the filter membrane filtering layer is provided with a filtered water outlet and a backwashing water inlet interface, the backwashing water inlet interface is connected with a backwashing coil arranged at the lower end of the filter membrane filtering layer in the filtering backwashing tank, the backwashing coil is upwards provided with a water outlet nozzle, and the side wall of the filtering backwashing tank at the upper end of the filter membrane filtering layer in the filtering backwashing tank is provided with a backwashing water outlet, and is characterized in that the stirring paddle blade is a stainless steel mesh sheet with mesh-shaped through holes, the side wall of the filtration backwashing tank, which is opposite to the backwashing water outlet, at the upper end of the filter membrane filter layer in the filtration backwashing tank is provided with a through hole, a push rod is inserted into the filtration backwashing tank from the through hole, the front end of the extended push rod is provided with a pushing scraper, the pushing scraper is in contact with the upper end surface of the filter membrane filter layer and is used for scraping off the filtration dirt on the upper end surface of the filter membrane filter layer, and the filtration dirt is discharged from the backwashing water outlet along with the backwashing water.

2. The apparatus as claimed in claim 1, wherein the stirring blades are arranged in a plurality of staggered and spaced apart longitudinally around the stirring shaft, and the mesh-shaped through holes of the stirring blades are planar and parallel to the stirring shaft.

3. The apparatus for removing iron and manganese and backwashing water for boilers as claimed in claim 1 or 2, wherein said stirring blade is a 500-mesh meshed perforated stainless steel mesh.

4. The device for removing iron and manganese and backwashing water for boilers as claimed in claim 1, wherein a brush is provided on a contact surface of said pushing scraper and an upper end surface of said filter layer.

5. The device for removing iron and manganese and backwashing boiler water as claimed in claim 1 or 4, wherein the filtering backwashing tank is a rectangular tank, and the width of the pushing scraper is the same as the width of the filter layer of the filter membrane.

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