CN215962535U - A purifier for washing penetrating water of filter cloth of tilting disk filter - Google Patents

Abstract

The utility model discloses a device for purifying penetrating water for washing filter cloth of a tilting pan filter. This purifier includes purifying tank, aqua storage tank, sludge impoundment, and the vertical interval setting of a plurality of filters is in purifying tank, and the purifying tank internal part separates into a plurality of drip chambers and a clear water room, and the filtration pore of crossing of a plurality of filters reduces along the rivers direction in proper order, every the bottom of drip chamber all is equipped with the drain, every the drain pass through sewage pipes with sludge impoundment is connected, all is equipped with first valve on the sewage pipes, is equipped with the overflow mouth on the clear water room, and the overflow mouth passes through overflow pipe and is connected with the aqua storage tank. The device carries out purification treatment on the penetrating water for washing the filter cloth of the tilting pan filter, thereby effectively improving the recovery utilization rate of the penetrating water of the filter cloth of the tilting pan filter; impurities adhered to the filter cloth of the tilting disk filter can be washed clean, so that the filter cloth is regenerated, the filter cloth can be reused, and the loss of the filter cloth is reduced.

Description

A purifier for washing penetrating water of filter cloth of tilting disk filter

Technical Field

The utility model relates to the technical field of energy-saving and environment-friendly devices, in particular to a device for purifying penetrating water for washing filter cloth of a tilting disk filter.

Background

The production principle of phosphoric acid is that under proper technological conditions, sulfuric acid and phosphorite react to produce phosphoric acid and phosphogypsum, and after the filtration process, phosphoric acid slurry produced in the reaction process is sent to a filter, and the phosphoric acid and the phosphogypsum are continuously separated through filter cloth. The obtained phosphogypsum filter cake is fully cleaned and recycled by a countercurrent washing method for most of the phosphoric acid solution adsorbed on the surface of the phosphogypsum. It can be said that the development of the wet-process phosphoric acid production process is closely related to the improvement of the filtration and separation technology of the phosphogypsum to a great extent, so that the quality of the filtration and separation of the phosphogypsum can directly reflect the quality of the phosphoric acid production.

At present, a filter device commonly used in a filtering process of wet-process phosphoric acid production is a tilting disk filter, a large amount of small-particle calcium sulfate, ferric sulfate, impurity aluminum oxide, magnesium oxide and other impurities are remained on a filter cloth after phosphogypsum is filtered, the filter cloth is washed by a large amount of water in a conventional method, and penetrating water generated after the filter cloth is washed is directly discharged, so that the economic benefit of phosphoric acid production is seriously influenced, resource waste is caused, and the environment is polluted.

How to reduce the filter cloth loss, prolong the service life of the filter cloth and improve the yield of phosphoric acid and the economic benefit of phosphoric acid production by improving the recovery rate of penetrating water for washing the filter cloth is a problem which is urgently needed to be solved by phosphoric acid production enterprises.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a device for purifying the penetrating water used for flushing the filter cloth of a tilting disk filter, which overcomes the above-mentioned disadvantages of the prior art.

The utility model relates to a device for purifying penetrating water for washing filter cloth of a tilting disk filter, which comprises a purification tank, a water storage tank and a sludge tank, wherein a plurality of filter plates are vertically arranged in the purification tank at intervals, the interior of the purification tank is divided into a plurality of settling chambers and a clear water chamber, the filtering holes of the filter plates are sequentially reduced along the water flow direction, the bottom of each settling chamber is provided with a sewage discharge outlet, each sewage discharge outlet is connected with the sludge tank through a sewage discharge pipeline, each sewage discharge pipeline is provided with a first valve, the clear water chamber is provided with an overflow port, and the overflow port is connected with the water storage tank through an overflow pipeline.

Furthermore, each filtering hole is conical, and the aperture of each filtering hole is gradually reduced along the direction of water flow passing through the filtering hole.

Furthermore, the plurality of filter plates are sequentially provided with a first filter plate, a second filter plate and a third filter plate along the water flow direction, and the aperture of filter holes in the first filter plate is 15mm to 10mm from large to small; the aperture of the filtering holes on the second filtering plate is 10mm to 8mm from large to small; the aperture of the filtering holes on the third filtering plate is 8mm to 5mm from large to small.

Further, the height of purification pond is 2.5m, the overflow mouth is located apart from 20cm of purification pond top.

Furthermore, the purification tank is positioned below the tilting pan filter, and a water inlet of the purification tank is communicated with the tilting pan filter through a pipeline.

Furthermore, a water pump is arranged at the water outlet of the water storage tank, a flushing pipe is arranged at the water outlet of the water pump, and a second valve is arranged on the flushing pipe.

Further, the second valve is a flow regulating valve.

The filter cloth flushing and recycling device has the advantages that the purification pond is used for purifying the penetrating water for flushing the filter cloth of the tilting pan filter, so that particle impurities in the penetrating water can be effectively removed, the purified penetrating water can be directly used for flushing the filter cloth of the tilting pan filter, the recycling rate of the penetrating water of the filter cloth of the tilting pan filter is effectively improved, and the resource recycling is realized; through setting up the water storage tank, guaranteed that the penetrating water purifies-washes can the cycle operation, the penetrating water after the purification washes repeatedly through the filter cloth to the tilting disk filter, can wash the impurity of adhesion on the filter cloth of tilting disk filter clean for the filter cloth is regenerated, and the filter cloth just can used repeatedly, has reduced the loss of filter cloth.

Moreover, the utility model has the advantages of simplicity, practicability, economy, reliability, high efficiency, low cost and environmental protection; the filter cloth regeneration operation of workers is facilitated, the equipment is maintained, the scaling of a vacuum chamber and a filter disc of the tilting disc filter is reduced, and the operation efficiency of the tilting disc filter is improved; the filter cloth cleaning rate and the filter strength are improved to the maximum extent by using the minimum amount of flushing water, so that the overhaul period is effectively prolonged, and the phosphoric acid yield and the economic benefit of phosphoric acid production are more effectively improved.

Drawings

FIG. 1 is a schematic view showing the construction of a device for purifying penetrating water used for washing a filter cloth of a tilting pan filter according to the present invention.

1. A purification tank; 11. an overflow port; 111. an overflow conduit; 12. a sewage draining outlet; 121. a first valve; 122. a blowdown line; 13. a filter plate; 131. a first filter plate; 132. a second filter plate; 133. a third filter plate; 14. a settling chamber; 15. a clear water chamber; 16. a filtration pore; 17. a water inlet; 171. a water inlet pipe; 2. A water storage tank; 21. a water pump; 22. a flush pipe, 23, a second valve; 3. a sludge tank.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in figure 1, the device for purifying the penetrating water for washing the filter cloth of the tilting disk filter comprises a purification tank 1, a water storage tank 2 and a sludge tank 3, wherein a plurality of filter plates 13 are vertically arranged in the purification tank 1 at intervals and divide the interior of the purification tank 1 into a plurality of settling chambers 14 and a clear water chamber 15, filter holes 16 of the plurality of filter plates 13 are sequentially reduced along the water flow direction, after the penetrating water for washing the filter cloth of the tilting disk filter enters the purification tank 1, the penetrating water is subjected to one-stage purification treatment by one stage through the filter plates 13 in the purification tank 1, granular impurities in the penetrating water are completely removed, the purified penetrating water can be directly used for washing the filter cloth of the tilting disk filter, and the recovery and utilization rate of the penetrating water of the filter cloth of the tilting disk filter is effectively improved. Set up drain 12 in every settling chamber 14 bottom, the precipitate in the settling chamber can be followed drain 12 and discharged, collects in sludge impoundment 3 along sewage pipes 122, and this setting can reduce the precipitate and pile up on filter 13 to guarantee filter 13's filtration efficiency, further improve purifying effect. The overflow port 11 is arranged in the clean water chamber 15, which is beneficial to the clean water purified to flow into the water storage tank 2 for storage through the overflow pipeline 111; the purified penetrating water stored in the water storage tank 2 can be directly used for washing the filter cloth of the tilting disk filter at any time, the circulating operation of purifying and washing the penetrating water is realized, the purified penetrating water can repeatedly wash the filter cloth of the tilting disk filter, impurities adhered to the filter cloth of the tilting disk filter can be washed clean, the filter cloth is regenerated, the filter cloth can be reused, and the loss of the filter cloth is reduced.

That is to say, the utility model can not only recycle the penetrating water of the filter cloth of the tilting disk filter, but also regenerate the filter cloth through the purification tank 1, the water storage tank 2 and the sludge tank 3, thereby prolonging the service life of the filter cloth and better solving the problem of the reuse of the filter cloth. The process has the advantages of simplicity, practicability, economy, reliability, high efficiency and low cost; the filter cloth regeneration operation of workers is facilitated, the equipment is maintained, the scaling of a vacuum chamber and a filter disc of the tilting disc filter is reduced, the operation efficiency of the tilting disc filter is improved, and the overhaul period is further effectively prolonged; the filter cloth cleaning rate and the filter strength are improved to the maximum extent by using the minimum amount of flushing water, and the phosphoric acid yield and the economic benefit of phosphoric acid production are improved more effectively.

The shape of the filtering holes 16 on the filtering plate 13 is various, and is not limited herein, in this embodiment, the shape of the filtering holes 16 is a cone, and the aperture of each filtering hole 16 is from large to small along the direction of the water flow passing through the filtering holes 16, so that the particle impurities smaller than the aperture of the filtering holes 16 slide down along the inner wall of the filtering holes 16, the filtering holes 16 can be prevented from being blocked by the impurities, the filtering process of the penetrating water is buffered, and the filtering efficiency is improved.

Further, in this embodiment, a first filter plate 131, a second filter plate 132, and a third filter plate 133 may be sequentially disposed in the purification tank 1 along the water flow direction, and the aperture of the filter holes on the first filter plate 131 is 15mm to 10mm from large to small; the aperture of the filtering holes on the second filtering plate 132 is from 10mm to 8mm from large to small; the aperture of the filtering holes on the third filtering plate 133 is 8mm to 5mm from large to small, and through three-stage filtering, the filtering effect is improved, and particle impurities in penetrating water can be effectively and completely removed, so that the water quality of the penetrating water after filtering meets the requirement of washing the filtering cloth, the recycling of the penetrating water of the filtering cloth of the tilting pan filter is ensured, the regeneration of the filtering cloth is effectively promoted, the service life of the filtering cloth is prolonged, and the yield of phosphoric acid is improved.

In order to save energy and facilitate the operation of workers, the purification tank 1 can be arranged below the tilting pan filter, and the water inlet 17 of the purification tank 1 is communicated with the tilting pan filter through a water inlet pipeline 171.

The height of the purification tank 1 is not limited herein, and workers can construct the purification tank according to actual production conditions, such as: the height of the purification tank 1 can be 2.5m, and an overflow port 11 can be formed at a position 20cm away from the top of the purification tank 1, so that sludge precipitation can be guaranteed, and supernatant can automatically flow into the water storage tank 2.

In order to ensure the flushing pressure for flushing the filter cloth of the tilting disk filter, a water pump 21 can be arranged at the water outlet of the water storage tank 2, in the embodiment, a flushing pipe 22 is arranged at the water outlet of the water pump 21, and a second valve 23 is further arranged on the flushing pipe 22 and can adjust the flow of the flushing pipe 22, so that the normal operation of workers and the cleaning of the purification device are facilitated.

The above is not relevant and is applicable to the prior art.

While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the utility model, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the utility model as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.

Claims (7)

1. A purification device for the penetrating water used for washing the filter cloth of a tilting disk filter is characterized in that: including purification tank (1), aqua storage tank (2), sludge impoundment (3), the vertical interval setting of a plurality of filters (13) is in purification tank (1), and with purification tank (1) internal partitioning become a plurality of drip chambers (14) and a clear water room (15), a plurality of filtration hole (16) of filter (13) reduce in proper order, every along the rivers direction the bottom of drip chamber (14) all is equipped with drain (12), every drain (12) pass through sewage pipes (122) with sludge impoundment (3) are connected, all be equipped with first valve (121) on sewage pipes (122), be equipped with overflow mouth (11) on clear water room (15), overflow mouth (11) through overflow pipe (111) with aqua storage tank (2) are connected.

2. A purification apparatus of the penetrating water for washing the filter cloth of the rolling-over-pan filter as claimed in claim 1, wherein: each filtering hole (16) is conical in shape; the aperture of each filter hole (16) is gradually reduced along the direction that water flows through the filter holes (16).

3. A purification apparatus of the penetrating water for washing the filter cloth of the rolling-over-pan filter as claimed in claim 2, wherein: the plurality of filter plates (13) are sequentially a first filter plate (131), a second filter plate (132) and a third filter plate (133) along the water flow direction, and the aperture of filter holes in the first filter plate (131) is 15mm to 10mm from large to small; the aperture of the filtering holes on the second filtering plate (132) is 10mm to 8mm from large to small; the aperture of the filtering holes on the third filtering plate (133) is 8mm to 5mm from large to small.

4. A purification apparatus of the penetrating water for washing the filter cloth of the rolling-over-pan filter as claimed in claim 1, wherein: the height of the purification tank (1) is 2.5m, and the overflow port (11) is located 20cm away from the top of the purification tank (1).

5. A purification apparatus of the penetrating water for washing the filter cloth of the rolling-over-pan filter as claimed in claim 1, wherein: the purification tank (1) is positioned below the tilting pan filter, and a water inlet (17) of the purification tank (1) is communicated with a water outlet of the tilting pan filter through a water inlet pipeline (171).

6. A purification apparatus of the penetrating water for washing the filter cloth of the rolling-over-pan filter as claimed in claim 1, wherein: a water pump (21) is arranged at the water outlet of the water storage tank (2), a flushing pipe (22) is arranged at the water outlet of the water pump (21), and a second valve (23) is arranged on the flushing pipe (22).

7. The purification apparatus of the penetrating water for washing the filter cloth of the rolling-over-pan filter as claimed in claim 6, wherein: the second valve (23) is a flow regulating valve.

Images