CN110975357A - Industrial pure water preparation system with filtering and purifying functions - Google Patents
Industrial pure water preparation system with filtering and purifying functions Download PDFInfo
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- CN110975357A CN110975357A CN201911362595.4A CN201911362595A CN110975357A CN 110975357 A CN110975357 A CN 110975357A CN 201911362595 A CN201911362595 A CN 201911362595A CN 110975357 A CN110975357 A CN 110975357A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/38—Feed or discharge devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/38—Feed or discharge devices
- B01D24/40—Feed or discharge devices for feeding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/38—Feed or discharge devices
- B01D24/42—Feed or discharge devices for discharging filtrate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
- B01D2024/125—Downward filtration, the filtering material being supported by pervious surfaces spray heads specially adapted therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
Abstract
The invention discloses a filtration and purification industrial pure water preparation system which comprises a tank body, a water distribution device, a filter layer, a bottom filter plate, a water collecting pipe and an overflow water outlet pipeline, wherein the water distribution device, the filter layer, the bottom filter plate and the water collecting pipe are sequentially arranged in the tank body from top to bottom; the overflow water outlet pipeline comprises a first pipe section communicated with the water outlet end of the water collecting pipe, a vertical ascending pipe section communicated with the tail end of the first pipe section, a V-shaped sand settling pipe section communicated with the tail end of the ascending pipe section, an S-shaped climbing pipe section communicated with the sand settling pipe section and a second pipe section communicated with the S-shaped climbing pipe section; the water distribution device is mainly used for primarily filtering water in the industrial pure water preparation process, can effectively remove most impurities in the water, and raw material water enters the filter layer through the water distribution device for filtering, is collected by the water collection pipe, is discharged through the overflow water outlet pipeline, and enters the next operation section after primary filtering is realized.
Description
Technical Field
The invention relates to the field of pure water preparation, in particular to a filtration and purification industrial pure water preparation system.
Background
With the progress of science and technology, the demand of industrial pure water is more and more, and the following steps are adopted for the general industrial pure water: the raw water is sequentially treated by a quartz sand filter, an activated carbon filter, a precision filter, a reverse osmosis device, a sterilization device and the like to prepare pure water with the quality meeting the requirements. The quartz sand filter is used for primarily filtering raw material water, and can effectively intercept and remove suspended matters, organic matters, colloidal particles, microorganisms, chlorine, odor, partial heavy metal ions and the like in the water. The quality of the treatment effect of the quartz sand filter has great influence on the subsequent operation.
When the quartz sand filter is used, particularly under the action of long-term scouring of water, fine-grain (or micro-fine-grain) quartz sand originally existing in the filter layer or fine-grain quartz sand generated due to the scouring action inevitably passes through the bottom of the filter layer along with water flow to enter filtered water, and enters the next section of operation if the quartz sand is not treated. After the accumulated amount is large, the subsequent operation and equipment are affected greatly, for example, an activated carbon filter possibly adopted in the subsequent operation section is blocked, a precision filter and a reverse osmosis device are blocked or damaged, and extra abrasion is caused to pump equipment. Therefore, quartz sand entering the filtered water is prevented or reduced as much as possible, and the method plays an important role in the whole pure water preparation system. Patent 201810607590.2 discloses a quartz sand filter for water treatment, which discharges water through an overflow pipe, and reduces the amount of quartz sand entering into the filtered water by using the settling action of the overflow pipe. However, the method still has the defects that the quartz sand is prevented from being discharged to the next operation along with the rising of the water flow only by the gravity sedimentation of the vertical pipe section of the overflow pipe, the effect is not obvious, for example, when the water flow speed is high, a large amount of quartz sand can still pass through the top of the vertical pipe section of the overflow pipe to enter the next operation under the action of the water flow; or the fine quartz sand can pass the top of the vertical pipe section of the overflow pipe to enter the next operation under the action of small water flow. If the settling effect of the quartz sand is to be provided, the height of the vertical pipe section of the overflow pipe can only be increased, but too high is obviously not suitable and does not show. So its effect of blocking the quartz sand from entering the next operation is to be enhanced.
On the other hand, after the quartz sand filter is used for a period of time, a large amount of impurities are accumulated in the quartz sand in the filter, and the quartz sand filter needs to be washed or replaced regularly. The conventional quartz sand filter is generally integrally filled in a tank body, all quartz sand is washed from the bottom during cleaning, and all quartz sand is replaced during replacement. However, since the water flows down from the upper layer in sequence, the amount of impurities accumulated in the upper layer of silica sand is the largest and the required washing and replacement cycle should be the shortest. Because of integral cleaning and replacement, the lower quartz sand is not fully utilized or is integrally replaced when not needed, thereby causing waste; the same is true when cleaning, either labor is wasted in washing the lower layer which is not needed to be washed temporarily, or the washing period of the upper layer is too long, so that the filtering efficiency is reduced.
Therefore, a more reliable solution is needed to solve the above problems.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a filtration and purification industrial pure water preparation system, aiming at the deficiencies in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that: a filtering and purifying industrial pure water preparation system comprises a tank body, a water distribution device, a filter layer, a bottom filter plate, a water collecting pipe and an overflow water outlet pipeline, wherein the water distribution device, the filter layer, the bottom filter plate and the water collecting pipe are sequentially arranged in the tank body from top to bottom;
the overflow water outlet pipeline comprises a first pipe section communicated with the water outlet end of the water collecting pipe, a vertical ascending pipe section communicated with the tail end of the first pipe section, a V-shaped sand settling pipe section communicated with the tail end of the ascending pipe section, an S-shaped climbing pipe section communicated with the sand settling pipe section and a second pipe section communicated with the S-shaped climbing pipe section;
the first pipe section is obliquely arranged, the first end of the first pipe section, which is connected with the water collecting pipe, is lower than the second end of the first pipe section, which is connected with the vertical ascending pipe section, and the bottom of the first end of the first pipe section is provided with a first sand discharge port;
the V-shaped first top end of the sand setting pipe section is communicated with the tail end of the vertical ascending pipe section through an arc pipe section, and the V-shaped second top end of the sand setting pipe section is communicated with the bottom end of the S-shaped climbing pipe section; and a second sand discharge port is formed in the V-shaped bottom end of the sand settling pipe section.
Preferably, the inner wall of the arc-shaped pipe section is provided with a first arc-shaped sand-resisting sheet.
Preferably, the S-shaped climbing pipe section is obliquely arranged, and a plurality of second arc-shaped sand-blocking sheets are arranged on the inner wall of the S-shaped climbing pipe section at intervals.
Preferably, the second arc-shaped sand-blocking sheet is arranged in a downward inclination mode, namely the upper end of the second arc-shaped sand-blocking sheet is connected with the inner wall of the S-shaped climbing pipe section, and the lower end of the second arc-shaped sand-blocking sheet is far away from the inner wall of the S-shaped climbing pipe section.
Preferably, a protection filter plate connected with the inner wall of the tank body is arranged below the water distribution device, the filter layer further comprises quartz sand filled between the protection filter plate and the bottom filter plate, and a plurality of arc-shaped support filter plates connected with the inner wall of the tank body are arranged between the protection filter plate and the bottom filter plate at intervals;
the arc supports the filter plate and supports the filter plate including the first arc that from top to bottom inclines to set up in proper order and support filter plate, second arc and third arc, and adjacent two arcs support the opposite direction of slope of filter plate.
Preferably, the diameters of filter holes formed in the first arc-shaped support filter plate, the second arc-shaped support filter plate and the third arc-shaped support filter plate are sequentially reduced, and two ends of the three arc-shaped support filter plates are fixedly connected with the inner wall of the tank body;
the quartz sand between the protection filter plate and the first arc-shaped support filter plate forms a first filter layer, the quartz sand between the first arc-shaped support filter plate and the second arc-shaped support filter plate forms a second filter layer, the quartz sand between the second arc-shaped support filter plate and the third arc-shaped support filter plate forms a third filter layer, and the particle sizes of the quartz sand in the first filter layer, the second filter layer and the third filter layer are sequentially reduced.
Preferably, a first flushing water pipe is arranged at the top end of the first arc-shaped support filter plate, a second flushing water pipe is arranged at the top end of the second arc-shaped support filter plate, and a third flushing water pipe is arranged at the top end of the third arc-shaped support filter plate;
a first sand inlet pipe is arranged at the top end of the first filter layer, and a first sand discharge pipe is arranged at the bottom end of the first filter layer;
a second sand inlet pipe is arranged at the top end of the second filter layer, and a second sand discharge pipe is arranged at the bottom end of the second filter layer;
the top of third filter layer is provided with the third sand inlet pipe, the bottom of third filter layer is provided with the third sand discharge pipe.
Preferably, a water collecting cavity is arranged below the third arc-shaped support filter plate, and the water collecting pipes are flatly laid in the water collecting cavity;
the water collecting pipe comprises a plurality of annular pipes, a plurality of arc-shaped connecting pipes and a main water outlet pipe, wherein the annular pipes are sequentially sleeved from inside to outside, the diameters of the annular pipes are sequentially increased, the arc-shaped connecting pipes are communicated between two adjacent annular pipes, the main water outlet pipe is communicated with the bottom of the innermost annular pipe, and the main water outlet pipe is communicated with a first pipe section of the overflow water outlet pipeline;
a plurality of water collecting holes are formed in the outer walls of the annular pipe and the arc-shaped connecting pipe.
Preferably, the water collecting hole is a tapered hole having a diameter gradually decreasing from the outer wall to the inside.
Preferably, the water distribution device comprises a conical box body section and a disc box body section connected below the conical box body section, and a plurality of water distribution holes are formed in the bottom surface of the disc box body section.
It is preferable that the first and second liquid crystal layers are formed of,
the invention has the beneficial effects that: the industrial pure water preparation system for filtering and purifying is mainly used for primarily filtering water in the industrial pure water preparation process, can effectively remove most impurities in the water, and raw material water enters a filter layer through a water distribution device for filtering, is collected by a water collecting pipe and then is discharged through an overflow water outlet pipeline, and enters the next operation section after primary filtering is realized;
according to the invention, the overflow water outlet pipeline is arranged, the first pipe section and the first arc-shaped sand-blocking sheet can be used for blocking fine quartz sand once, the V-shaped sand-settling pipe section can be used for blocking the fine quartz sand again along with the movement of water flow, and the S-shaped climbing pipe section and the second arc-shaped sand-blocking sheet can be used for blocking the fine quartz sand three times, so that the amount of fine quartz sand leaked from the filter layer into the next process section along with drainage can be greatly reduced, and the negative effect of the leaked fine quartz sand on the subsequent operation can be obviously reduced;
according to the invention, through the arc-shaped structural design of the first filter layer, the second filter layer and the third filter layer and the arrangement of the plurality of flushing water pipes, the sand discharge pipe and the sand inlet pipe, the filter layers can be flushed or replaced independently, so that the filtering effect can be maintained, and unnecessary workload can be reduced.
Drawings
FIG. 1 is a schematic configuration diagram of a filtration-purified industrial pure water production system according to the present invention;
fig. 2 is a schematic structural diagram of an overflow water outlet pipeline in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the construction of a sand setting pipe section and an S-shaped climbing pipe section in example 1 of the present invention;
FIG. 4 is a schematic structural view of a header pipe in embodiment 3 of the present invention;
FIG. 5 is a schematic view showing the structure of water collecting holes in example 3 of the present invention;
fig. 6 is a schematic structural view of a water distribution device in embodiment 4 of the present invention.
Description of reference numerals:
1, a tank body; 10-a first flushing water pipe; 11-a second flushing water pipe; 12-a third flushing water pipe; 13-a first sand inlet pipe; 14-a first sand discharge pipe; 15-a second sand inlet pipe; 16-a second sand discharge pipe; 17-a third sand inlet pipe; 18-a third sand discharge pipe; 19-a solenoid valve;
2-a water distribution device; 20-a conical box section; 21-disc cartridge section;
3, protecting the filter plate;
4, a filter layer; 40-a first arc-shaped support filter plate; 41-second arc support filter plate; 42-a third arc-shaped support filter plate; 43 — a first filter layer; 44 — a second filter layer; 45-a third filter layer; 46-a water collecting cavity;
5, a bottom layer filter plate;
6, a water collecting pipe; 60-a ring-shaped pipe; 61-arc connecting pipe; 62-total water outlet pipe; 63-water collecting holes;
7-overflow water outlet pipeline; 70 — a first tube section; 71-vertical riser section; 72-sand setting pipe section; 73-an S-shaped climbing pipe section; 74 — a second tube segment; 75-a first sand discharge port; 76-second sand discharge port; 77-arc pipe section; 78-first arc-shaped sand-blocking sheet; 79-second arc-shaped sand-blocking sheets;
8-raw material water pipe; 80-a water pump;
9-a drain pipe.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1, the filtration-purified industrial pure water preparation system of this embodiment includes a tank 1, a water distribution device 2, a filter layer 4, a bottom filter plate 5, a water collection pipe 6, and an overflow water outlet pipeline 7 connected to the water outlet end of the water collection pipe 6, which are sequentially disposed in the tank 1 from top to bottom.
The quartz sand filter is mainly used for primarily filtering water in the industrial pure water preparation process so as to remove most impurities in the water. The water distribution device 2 is communicated with external raw water through the raw water pipe 8, the water pump 80 is arranged on the raw water pipe 8, the raw water enters the filter layer 4 through the water distribution device 2 to be filtered, then is collected by the water collecting pipe 6 and is discharged through the overflow water outlet pipeline 7, and the raw water enters the next operation section after being primarily filtered. The following examples are provided to further illustrate the present invention.
Example 1
2-3, on the basis of the above, preferably, the overflow water outlet pipeline 7 comprises a first pipe section 70 communicated with the water outlet end of the water collecting pipe 6, a vertical ascending pipe section 71 communicated with the tail end of the first pipe section 70, a sand settling pipe section 72 communicated with the tail end of the ascending pipe section and in a V shape, an S-shaped climbing pipe section 73 communicated with the sand settling pipe section 72 and a second pipe section 74 communicated with the S-shaped climbing pipe section 73;
the first pipe section 70 is obliquely arranged, the first end of the first pipe section connected with the water collecting pipe 6 is lower than the second end of the first pipe section connected with the vertical ascending pipe section 71, and the bottom of the first end of the first pipe section 70 is provided with a first sand discharging port 75;
the V-shaped first top end of the sand setting pipe section 72 is communicated with the tail end of the vertical ascending pipe section 71 through an arc pipe section 77, and the V-shaped second top end of the sand setting pipe section 72 is communicated with the bottom end of the S-shaped climbing pipe section 73; the V-shaped bottom end of the sand settling pipe section 72 is provided with a second sand discharge port 76.
Further, a first arc-shaped sand-blocking sheet 78 is arranged on the inner wall of the arc-shaped pipe section 77. More preferably, the bottom end of the first arc-shaped sand-blocking sheet 78 is positioned at the side of the connection of the arc-shaped pipe section 77 and the vertical rising pipe section 71, which is close to the vertical rising pipe section 71, i.e. at the right side of the inner wall at the left side of the vertical rising pipe section 71 in fig. 3. When fine sand rises to the arc-shaped pipe section 77 along with the water flow, part of the fine sand can fall into the vertical rising pipe section 71 again after being blocked by the first arc-shaped sand blocking sheet 78.
Further, the S-shaped climbing pipe section 73 is obliquely arranged, and a plurality of second arc-shaped sand prevention sheets 79 are arranged on the inner wall of the S-shaped climbing pipe section 73 at intervals.
Further, the second arc-shaped sand-blocking sheet 79 is arranged in a downward inclination manner, that is, the upper end thereof is connected with the inner wall of the S-shaped climbing pipe section 73, and the lower end thereof is far away from the inner wall of the S-shaped climbing pipe section 73.
More preferably, the first arc-shaped sand prevention sheet 78 and the second arc-shaped sand prevention sheet 79 are both provided with micropores, and the size of the micropores is at least smaller than the size of the filter pores of the bottom filter plate 5. The micro-pores can reduce the blocking effect on water flow and ensure the blocking of fine quartz sand.
In this embodiment, the overflow water outlet pipelines 7 include two symmetrically arranged groups, the water inlet ends of the first pipe sections 70 of the two groups of overflow water outlet pipelines 7 are connected to the water outlet end of the water collecting pipe 6, and the water outlet ends of the two groups of overflow water outlet pipelines 7 are connected to the water discharging pipe 9.
Under the action of long-term water scouring, a part of original fine-grain (or micro-fine-grain) quartz sand in the filter layer 4 or fine-grain quartz sand (the part with the grain diameter smaller than the size of the filter holes on the bottom filter plate 5) generated by the scouring action inevitably passes through the bottom filter plate 5 along with water flow and enters the water collecting pipe 6, and if the part is not treated, the next section of operation is carried out. If the amount is large, the subsequent operation and equipment are adversely affected, for example, the activated carbon filter possibly used in the subsequent operation section is blocked, a precision filter and a reverse osmosis device are blocked or damaged, and additional wear and tear are caused to pump equipment. In the invention, the water treated by the filter layer 4 is discharged through the overflow water outlet pipeline 7, so that the amount of fine quartz sand leaked from the filter layer 4 and entering the next process section along with the discharged water can be greatly reduced, and the negative effect of the leaked fine quartz sand on the subsequent operation is obviously reduced.
Specifically, the water filtered by the filter layer 4 and a part of fine quartz sand mixed therein are discharged from the water collecting pipe 6 into the first pipe section 70 of the overflow water outlet pipeline 7, wherein the fine quartz sand moves along with the water flow, and the movement of the fine quartz sand is mainly analyzed. The first pipe section 70 is inclined upwards along the water flow direction, and a certain obstruction is provided for the movement of the fine quartz sand, when the fine quartz sand moves upwards through the vertical ascending pipe section 71, part of the fine quartz sand falls to the first pipe section 70 due to gravity, and the other part of the fine quartz sand collides with the first arc-shaped sand-blocking sheet 78 and is blocked to fall, so that the fine quartz sand falling to the first pipe section 70 slides to the first sand outlet 75 along the inclined direction to be gathered;
the fine quartz sand crossing the arc-shaped pipe section 77 is deposited to the second sand discharge port 76 at the bottom end of the V shape in a large amount in the sand setting pipe section 72 due to the V-shaped structure and is gathered, and the sand setting pipe section 72 blocks the fine quartz sand again along with the movement of the water flow;
the fine quartz sand passing through the sand settling pipe section 72 passes through the S-shaped climbing pipe section 73 in an inclined upward direction, due to the design of the S-shaped structure, the water flow speed is reduced, the ascending power of the fine quartz sand is greatly reduced, and a large amount of fine quartz sand can reversely fall along the S-shaped climbing pipe section and slide into the second sand outlet 76 to be gathered; in addition, the second arc-shaped sand-blocking sheet 79 in the S-shaped climbing pipe section 73 blocks the rising fine quartz sand again, so that the fine quartz sand basically cannot pass through the S-shaped climbing pipe section 73 to reach the second pipe section 74, and the fine quartz sand blocked by the second arc-shaped sand-blocking sheet 79 also slides to the second sand outlet 76 to be gathered. After a period of use, when the equipment is shut down, the valves at the first sand discharge port 75 and the second sand discharge port 76 are opened, and the fine quartz sand accumulated can be discharged. Therefore, the sand blocking effect of the overflow water outlet pipeline 7 can greatly reduce the amount of fine quartz sand (or micro-fine quartz sand) entering the next operation section.
Example 2
Referring to fig. 1, a further preferred embodiment is based on embodiment 1, wherein a protective filter plate 3 connected with the inner wall of the tank 1 is arranged below the water distribution device 2, the filter layer 4 further comprises quartz sand filled between the protective filter plate 3 and the bottom filter plate 5, and a plurality of arc-shaped support filter plates connected with the inner wall of the tank 1 are arranged between the protective filter plate 3 and the bottom filter plate 5 at intervals; the arc support filter plate comprises a first arc support filter plate 40, a second arc support filter plate 41 and a third arc support filter plate 42 which are sequentially arranged from top to bottom in an inclined mode, and the inclination directions of two adjacent arc support filter plates are opposite. Wherein, the protective filter plate 3 is provided with filter holes, the protective filter plate 3 can reduce the scouring of the raw material water to the surface of the filter layer 4, and pits are prevented from being formed on the surface of the filter layer 4. As shown in fig. 1, the first arc support filter sheet 40 and the third arc support filter sheet 42 are inclined to the lower right, and the second arc support filter sheet 41 is inclined to the lower left. Without reducing the overall volume of the filter layer 4, the filter layer 4 is formed such that the three layers each have an inclined arc shape at the bottom.
The diameters of filter holes formed in the first arc-shaped support filter plate 40, the second arc-shaped support filter plate 41 and the third arc-shaped support filter plate 42 are sequentially reduced, and two ends of the three arc-shaped support filter plates are fixedly connected with the inner wall of the tank body; the quartz sand between the protection filter plate 3 and the first arc support filter plate 40 forms a first filter layer 43, the quartz sand between the first arc support filter plate 40 and the second arc support filter plate 41 forms a second filter layer 444, the quartz sand between the second arc support filter plate 41 and the third arc support filter plate 42 forms a third filter 45 layer 4, and the particle sizes of the quartz sand in the first filter layer 43, the second filter layer 444, and the third filter 45 layer 4 are sequentially reduced.
Support the filter plate through three arcs and form three bottom surfaces and filter 4 for the arc form and filter water, because the vortex guide effect of arc support filter plate, water can have the trend along arc form downflow, can increase the dwell time of water in filter layer 4, the contact effect between reinforcing water and the filter medium to improve the filter effect. The pore diameters of the upper and lower filter layers 4 are reduced in sequence to form gradient filtration, so that the filtration efficiency and the filtration effect can be improved. The filter plates are supported by three arc-shaped support filter plates, so that the phenomenon of mutual permeation of media in each filter layer 4 can be prevented, and three relatively independent and stable filter layers 4 can be formed in the first filter section.
Further, a first flushing water pipe 10 is arranged at the top end of the first arc-shaped supporting filter plate 40, a second flushing water pipe 11 is arranged at the top end of the second arc-shaped supporting filter plate 41, and a third flushing water pipe 12 is arranged at the top end of the third arc-shaped supporting filter plate 42; a first sand inlet pipe 13 is arranged at the top end of the first filtering layer 43, and a first sand discharge pipe 14 is arranged at the bottom end of the first filtering layer 43; a second sand inlet pipe 15 is arranged at the top end of the second filtering layer 444, and a second sand discharge pipe 16 is arranged at the bottom end of the second filtering layer 444; the top end of the third filtering 45 layer 4 is provided with a third sand inlet pipe 17, and the bottom end of the third filtering 45 layer 4 is provided with a third sand discharge pipe 18. In this embodiment, the first flushing water pipe 10, the second flushing water pipe 11, and the third flushing water pipe 12 are all provided with the electromagnetic valves 19, and are all connected with the water pump 80. The upper page of the water inlet pipe of the water distribution device 2 is provided with an electromagnetic valve 19.
Further, all be provided with filter screen and valve on first sand discharge pipe 14, second sand discharge pipe 16, the third sand discharge pipe 18, the filter screen sets up in the inboard, and the valve is in the outside. When only sewage needs to be drained, the filter screen is not removed until the valve is opened; when the quartz sand needs to be removed, the valve needs to be opened and the filter screen needs to be removed.
After the quartz sand filter layer 4 is used for a long time, a large amount of impurities are accumulated inside, so that the filtering efficiency and the effect are greatly reduced, and the quartz sand filter layer needs to be washed or replaced. Through the structural design of the invention, the washing and the replacement can be conveniently carried out, and the operation steps are as follows: for example, since the first filtering layer 43 is located at the uppermost layer, the accumulated impurities are generally the most, when it needs to be washed, the high-pressure clean water or raw water (the raw water can be used for washing) is introduced from the first washing water pipe 10 through the water pump 80 to wash the quartz sand in the first filtering layer 43 from the side, the valve on the first sand discharge pipe 14 is opened, the sewage and impurities are discharged from the valve, and the filter screen can block the quartz sand from discharging; when the quartz sand in the first filter layer 43 needs to be cleaned or replaced more thoroughly, the valve on the first sand discharge pipe 14 is opened, the filter screen is detached, and the quartz sand in the first filter layer 43 is discharged from the first sand discharge pipe 14 under the impact of water pressure; so as to be convenient for the outside of the tank body 1 to be cleaned thoroughly or replaced directly. New silica sand is supplied into the first filter layer 43 through the first sand inlet pipe 13. It should be understood that the quartz sand is not too large in size, and the quartz sand in the first filter layer 43 can be smoothly discharged by the reasonable design of the diameters of the sand inlet pipe and the sand outlet pipe, the impact of the water pressure, and the inclined design of the bottom of the first filter layer 43. The cleaning and replacement of the second filter layer 444 and the third filter layer 45, layer 4, is the same as the above steps. Three filter layers 4 can be cleaned and replaced independently due to three relatively independent spaces formed by the three arc-shaped support filter plates. For example, the third filtering layer 45 at the bottom has relatively less impurities, the cleaning and replacing period can be longer, and the filtering effect can be maintained and the unnecessary workload can be reduced by reasonably cleaning and replacing each layer independently.
It can be understood that, in order to improve the efficiency and effect of washing and replacing the quartz sand, the washing water pipe, the sand inlet pipe and the sand discharge pipe can be provided with a plurality of pipes.
Example 3
Referring to fig. 2 and 4-5, it is further preferable that in the embodiment 2, a water collecting cavity 46 is provided below the third arc-shaped support filter plate 42, and the water collecting pipe 6 is flatly laid in the water collecting cavity 46; the water collecting pipe 6 comprises a plurality of annular pipes 60 which are sequentially sleeved from inside to outside and have sequentially increased diameters, a plurality of arc-shaped connecting pipes 61 communicated between the two adjacent annular pipes 60, and a main water outlet pipe 62 communicated with the bottom of the innermost annular pipe 60, wherein the main water outlet pipe 62 is communicated with a first pipe section 70 of the overflow water outlet pipeline 7; a plurality of water collecting holes 63 are formed on the outer walls of the annular pipe 60 and the arc-shaped connecting pipe 61. The water passing through the filter layer 4 flows into the water collecting chamber 46 and then is collected to the overflow water outlet pipeline 7 by the water collecting pipe 6.
Referring to fig. 2 and 4, the water in the water collecting chamber 46 enters the annular pipe 60 and the arc connecting pipe 61 through the water collecting hole 63, and the water in the outer annular pipe 60 flows to the innermost annular pipe 60 through the arc connecting pipe 61 in sequence and then flows into the first pipe section 70 of the overflow water outlet pipe 7 through the bottom main water outlet pipe 62. The annular pipe 60 can increase the number of the water collecting holes 63 on the annular pipe, the arc-shaped connecting pipe 61 can increase the length of the pipeline and increase the number of the water collecting holes 63 on the arc-shaped connecting pipe, so that the water collecting quantity can be increased, and the water collecting efficiency is improved.
Further, the water collecting hole 63 is a tapered hole whose diameter is gradually reduced from the outer wall inward. That is, water enters from the large pore section of the water collecting hole 63 and flows out from the small pore section, the flowing speed can be increased, and the water collecting efficiency is improved.
Example 4
Referring to fig. 6, it is further preferable that in embodiment 1 or 2 or 3, the water distribution device 2 includes a conical box section 20 and a disk box section 21 connected below the conical box section 20, and a plurality of water distribution holes are opened on the bottom surface of the disk box section 21. Raw material water passes through the conical box section 20 and the disc box section 21 in sequence, then uniformly flows out from the water distribution holes to enter the filter layer 4, and can uniformly flow into the upper part of the filter layer 4 through the water distribution device 2, so that the whole filter layer 4 can be fully utilized for filtering.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. A filtering and purifying industrial pure water preparation system is characterized by comprising a tank body, a water distribution device, a filter layer, a bottom filter plate, a water collecting pipe and an overflow water outlet pipeline, wherein the water distribution device, the filter layer, the bottom filter plate and the water collecting pipe are sequentially arranged in the tank body from top to bottom;
the overflow water outlet pipeline comprises a first pipe section communicated with the water outlet end of the water collecting pipe, a vertical ascending pipe section communicated with the tail end of the first pipe section, a V-shaped sand settling pipe section communicated with the tail end of the ascending pipe section, an S-shaped climbing pipe section communicated with the sand settling pipe section and a second pipe section communicated with the S-shaped climbing pipe section;
the first pipe section is obliquely arranged, the first end of the first pipe section, which is connected with the water collecting pipe, is lower than the second end of the first pipe section, which is connected with the vertical ascending pipe section, and the bottom of the first end of the first pipe section is provided with a first sand discharge port;
the V-shaped first top end of the sand setting pipe section is communicated with the tail end of the vertical ascending pipe section through an arc pipe section, and the V-shaped second top end of the sand setting pipe section is communicated with the bottom end of the S-shaped climbing pipe section; and a second sand discharge port is formed in the V-shaped bottom end of the sand settling pipe section.
2. The filtration-purified industrial pure water production system according to claim 1, wherein a first arc-shaped sand-blocking sheet is provided on an inner wall of the arc-shaped pipe section.
3. The filtration-purification industrial pure water preparation system according to claim 1, wherein the S-shaped climbing pipe section is obliquely arranged, and a plurality of second arc-shaped sand-blocking sheets are arranged on the inner wall of the S-shaped climbing pipe section at intervals.
4. The filtration-purified industrial pure water preparation system according to claim 3, wherein the second arc-shaped sand-blocking sheet is arranged in a downward inclination manner, that is, the upper end of the second arc-shaped sand-blocking sheet is connected with the inner wall of the S-shaped climbing pipe section, and the lower end of the second arc-shaped sand-blocking sheet is far away from the inner wall of the S-shaped climbing pipe section.
5. The filtration-purified industrial pure water preparation system according to claim 1, wherein a protective filter plate connected to the inner wall of the tank is disposed below the water distribution device, the filter layer further comprises quartz sand filled between the protective filter plate and the bottom filter plate, and a plurality of arc-shaped support filter plates connected to the inner wall of the tank are disposed at intervals between the protective filter plate and the bottom filter plate;
the arc supports the filter plate and supports the filter plate including the first arc that from top to bottom inclines to set up in proper order and support filter plate, second arc and third arc, and adjacent two arcs support the opposite direction of slope of filter plate.
6. The system for preparing purified industrial pure water according to claim 5, wherein the diameters of filter holes formed in the first arc-shaped supporting filter plate, the second arc-shaped supporting filter plate and the third arc-shaped supporting filter plate are sequentially reduced, and two ends of the three arc-shaped supporting filter plates are fixedly connected with the inner wall of the tank body;
the quartz sand between the protection filter plate and the first arc-shaped support filter plate forms a first filter layer, the quartz sand between the first arc-shaped support filter plate and the second arc-shaped support filter plate forms a second filter layer, the quartz sand between the second arc-shaped support filter plate and the third arc-shaped support filter plate forms a third filter layer, and the particle sizes of the quartz sand in the first filter layer, the second filter layer and the third filter layer are sequentially reduced.
7. The filtration-purified industrial pure water preparation system according to claim 6, wherein a first flushing water pipe is provided at the top end of the first arc-shaped support filter plate, a second flushing water pipe is provided at the top end of the second arc-shaped support filter plate, and a third flushing water pipe is provided at the top end of the third arc-shaped support filter plate;
a first sand inlet pipe is arranged at the top end of the first filter layer, and a first sand discharge pipe is arranged at the bottom end of the first filter layer;
a second sand inlet pipe is arranged at the top end of the second filter layer, and a second sand discharge pipe is arranged at the bottom end of the second filter layer;
the top of third filter layer is provided with the third sand inlet pipe, the bottom of third filter layer is provided with the third sand discharge pipe.
8. The filtration-purified industrial pure water preparation system according to claim 7, wherein a water collection chamber is provided below the third arc-shaped support filter plate, and the water collection pipe is laid flat in the water collection chamber;
the water collecting pipe comprises a plurality of annular pipes, a plurality of arc-shaped connecting pipes and a main water outlet pipe, wherein the annular pipes are sequentially sleeved from inside to outside, the diameters of the annular pipes are sequentially increased, the arc-shaped connecting pipes are communicated between two adjacent annular pipes, the main water outlet pipe is communicated with the bottom of the innermost annular pipe, and the main water outlet pipe is communicated with a first pipe section of the overflow water outlet pipeline;
a plurality of water collecting holes are formed in the outer walls of the annular pipe and the arc-shaped connecting pipe.
9. The filtration-purified industrial pure water production system according to claim 8, wherein the water collection hole is a tapered hole whose diameter is gradually reduced from the outer wall inward.
10. The filtration-purified industrial pure water preparation system according to claim 1, wherein the water distribution device comprises a conical box section and a disc box section connected below the conical box section, and a plurality of water distribution holes are formed in the bottom surface of the disc box section.
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