CN108079627B - Filter tank and pressure stabilizing and energy dissipating method for filter tank - Google Patents
Filter tank and pressure stabilizing and energy dissipating method for filter tank Download PDFInfo
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- CN108079627B CN108079627B CN201711338797.6A CN201711338797A CN108079627B CN 108079627 B CN108079627 B CN 108079627B CN 201711338797 A CN201711338797 A CN 201711338797A CN 108079627 B CN108079627 B CN 108079627B
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- filter
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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
- B01D24/48—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration
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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
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a filter chamber and a pressure stabilizing and energy dissipating method for the filter chamber, wherein a pressure stabilizing and energy dissipating device comprises an energy dissipating valve, an energy dissipating pipe and an energy dissipating inlet component, the energy dissipating valve is positioned above the filter chamber, the lower end of the energy dissipating valve penetrates through a filter plate in the filter chamber and the energy dissipating pipe positioned on the lower side of the filter plate and is in threaded connection with the energy dissipating inlet component, and the outer side of the energy dissipating pipe is in seamless connection with the filter plate. Therefore, the problems that when the filter tank adopting the assembled filter plate runs for a long time, because the filter head is polluted and blocked or polluted by algae breeding, when the air-water backwashing operation is carried out, backwashing gas and water are difficult and are released through the filter head in time, the pressure at the lower part of the filter plate is increased steeply, the filter plate pressing block falls off, the top plate of the filter plate and the filter material collapse and the like can be solved well.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a filter tank and a pressure stabilizing and energy dissipating method for the filter tank.
Background
In the existing filter adopting the filter heads and the filter plate assembling technology, after the filter heads operate for a certain period, the filter heads are polluted or polluted by algae, under the condition, when air-water backwashing (including single air washing and air-water combined backwashing) is carried out, a gas (water) washing channel is blocked, backwashing gas (water) cannot be released through the filter heads, and a gas (water) layer is formed at the lower part of the filter plates, so that filter plate pressing blocks are easy to fall off, top plate material collapse is easy to cause, and the operation of the filter is influenced; in addition, because the filter chamber adopts the filter beams to support the filter plate, the filter beams are mutually separated, so that gas (water) can not circulate during backwashing, and the problem of filter plate top plate collapse is further aggravated.
Therefore, a device and a method are needed to solve the problems that the filter head is dirty and blocked or algae is attached and bred to influence an air-water channel when the filter tank runs for a long time, and strong air (water) pressure cannot be released through the filter head and a filter layer when air-water backwashing is carried out, so that a filter plate top plate or a filter plate pressing block falls off and the like
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a filter chamber and a method for stabilizing pressure and dissipating energy in the filter chamber, which can prevent the problem that a top plate or a filter cake of a filter plate falls off due to the failure of strong air (water) pressure to release through a filter head and a filter layer during an air-water backwashing operation.
The pressure stabilizing and energy dissipating device of the filter tank comprises an energy dissipating valve, an energy dissipating pipe and an energy dissipating inlet component, wherein the energy dissipating valve is positioned above the filter tank, penetrates through a filter plate in the filter tank through the lower end of the energy dissipating pipe and is positioned on the lower side of the filter plate, the energy dissipating pipe is in threaded connection with the energy dissipating inlet component, and the outer side of the energy dissipating pipe is in seamless connection with the filter plate.
As a preferable technical solution of the present invention, the pressure stabilizing and energy dissipating devices are provided between the filter beams on both sides and the wall of the filter tank facing the filter beams on both sides, and between the adjacent filter beams.
As a preferable technical scheme of the invention, the pressure stabilizing and energy dissipating devices are arranged near the tank walls on two sides of the filter tank connected with the filter beams.
As a preferable technical scheme of the invention, the energy dissipation pipes of the pressure stabilizing and energy dissipating device are respectively fixed on the tank walls on two sides of the filter tank, which are connected with the filter beams, through brackets.
As a preferred technical scheme of the invention, the energy dissipation inlet part is in a bell mouth shape with a downward opening and an opening, the length is 5 cm-15 cm, and the diameter of a lower opening is 1.2-2 times larger than that of an upper opening.
As a preferred technical scheme of the invention, the energy dissipation inlet part is in a bell mouth shape with a downward opening and is blocked by a pipe block or a blind plate, a plurality of holes are uniformly arranged on the periphery of the opening and are used as airflow channels, and the aperture of each hole is 3-8 mm.
As a preferable technical scheme of the invention, the energy dissipation pipe is a steel pipe with the pipe diameter of 15-32 mm, and the lower end of the energy dissipation pipe extends out of the lower side of the filter plate by 5-15 cm and is connected with the upper opening of the energy dissipation inlet component.
As a preferable technical solution of the present invention, the energy dissipation valve of the pressure stabilizing energy dissipation device is an electromagnetic valve, an electrically operated valve, or a pneumatically operated valve.
As a preferable technical scheme of the invention, sand and joint sealing materials are adopted between the energy dissipation pipe and the filter plate layer.
The invention also provides a voltage-stabilizing energy dissipation method for the device, which comprises the following steps. The method comprises the following steps: automatically interlocking and setting the air washing valve and the energy dissipation valve of the filter tank, so that the air washing valve of the filter tank can be opened and closed simultaneously with the energy dissipation valve in an automatic state; step two: performing air-water backwashing, and simultaneously starting the pressure-stabilizing and energy-dissipating device to work, namely opening the air washing valve, starting air-water backwashing operation on the filter tank, correspondingly, opening the energy-dissipating valve along with the opening of the air washing valve through automatic interlocking setting, and discharging gas and water on the lower side of the filter plate from the energy-dissipating inlet part through the energy-dissipating pipe and the energy-dissipating valve to directly pass through the atmosphere under the action of pressure difference, so as to dissipate and stabilize the energy of a gas layer and a water layer on the lower side of the filter plate; step three: and finishing air-water backwashing, wherein the pressure stabilizing and energy dissipating device finishes working, namely closing the air washing valve and finishing air-water backwashing operation, and meanwhile, the energy dissipating valve is closed along with the closing of the air washing valve through the automatic interlocking setting.
By the invention, the pressure stabilizing and energy dissipating devices are arranged between the filter beams and the wall of the filter tank and between the filter beams in the filter tank, so that the problems that backwashing gas (water) is difficult to release through the filter head in time when the filter tank adopting the assembled filter plate is operated for a long time due to the filter head being blocked or polluted by algae breeding, the pressure at the lower part of the filter plate is increased steeply, the filter plate pressing block falls off, the filter plate top plate and the filter material collapse and the like are solved better.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Further objects, features and advantages of the present invention will become apparent from the following description of embodiments of the invention, with reference to the accompanying drawings, in which:
FIG. 1 is a front view schematically showing a pressure stabilizing and energy dissipating device of a filter tank according to the present invention;
FIG. 2 is a top view schematically showing a pressure stabilizing and energy dissipating device of the filter tank of the present invention;
figure 3 is a flow chart schematically illustrating a method of voltage stabilization and energy dissipation for the device of the present invention.
Detailed Description
The objects and functions of the present invention and methods for accomplishing the same will be apparent by reference to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in different forms. The nature of the description is merely to assist those skilled in the relevant art in a comprehensive understanding of the specific details of the invention.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.
For better understanding of the present invention, the basic structure of the filter will be briefly described below with reference to fig. 1.
As shown in figure 1, in the filter chamber 10, a filter head 40 is used as a water and gas distribution channel, the filter head 40 is installed on a filter plate 50 which is paved on the whole middle lower part of the filter chamber 10, and the filter plate 50 is fastened on the top end of the filter beam 30 through a long rod bolt which is embedded in the top of the filter beam 30 and a filter plate pressing block which is sleeved on the long rod bolt in a penetrating way. The filter beam 30 plays a role in fastening and supporting the filter plate 50, and the filter material and support layer 60 located on the upper side of the filter plate 50 plays a role in filtering. The filter chamber 10 is also provided with means for air washing, which means comprise an air washing line 20 and an air washing valve 21. When the filter 10 is backwashed with air and water (including single air washing and air and water combined backwashing), the air washing valve 21 is opened, and air enters the lower side of the filter plate 50 in the filter 10 from the air washing pipeline 20 leading to the bottom of the filter 10.
Based on the structure, in order to solve the problems that air pressure and water pressure are blocked during air-water backwashing after the filter head 40 is blocked, the filter plate 50 is pressed strongly and the top plate collapses and the like, the invention provides a stable pressure energy dissipation device 70 of a filter tank, and specifically, as shown in fig. 1, the stable pressure energy dissipation device 70 comprises an energy dissipation valve 71, an energy dissipation pipe 72 and an energy dissipation inlet component 73. The dissipator valve 71 is positioned above the filter chamber 10, passes through the filter plates 50 in the filter chamber 10 at the lower end thereof, and is connected to the dissipator inlet member 73 via the dissipator pipe 72 positioned below the filter plates 50, and the outer side of the dissipator pipe 72 is joined to the filter plates 50 without a seam. The energy dissipation valve 71 of the pressure stabilizing energy dissipation device 70 can adopt an electromagnetic valve, an electric valve or an air valve.
In the present invention, in order to facilitate the discharge of the excess gas and water (mainly gas) on the lower side of the filter plate 50 upward from the energy dissipating inlet member 73 to the atmosphere to discharge the excess gas pressure on the lower side of the filter plate 50, the energy dissipating inlet member 73 is preferably designed in a bell mouth shape with its opening facing downward. I.e. the energy dissipating inlet means 73 is designed as a bell mouth. Specifically, the energy dissipation inlet component 73 is preferably in a bell mouth shape with a downward opening and an opening, the length is 5cm to 15cm, and the lower caliber is gradually enlarged by 1.2 to 2 times compared with the upper caliber, but the invention is not limited thereto; for the convenience of connection of the internal thread and the external thread (screw thread), the upper caliber of the energy dissipation inlet component 73 is matched with the pipe diameter of the energy dissipation pipe 72, for example, the inner diameter of the upper caliber of the energy dissipation inlet component 73 is matched with the outer diameter of the energy dissipation pipe 72, such as 15 cm-32 mm, or the outer diameter of the upper caliber of the energy dissipation inlet component 73 is matched with the inner diameter of the energy dissipation pipe 72. In addition, it is also preferable that the energy dissipation inlet component 73 is in a bell mouth shape with an opening facing downward and sealed by a pipe plug or a blind plate, a plurality of holes are uniformly arranged on the periphery of the opening to serve as airflow channels, so that air can conveniently enter the airflow pipeline, and the hole diameter of each hole is preferably 3mm to 8 mm. According to above two kinds of structures, the homoenergetic steady voltage effect of better energy dissipation can be obtained.
It is also preferred that the dissipater pipe 72 is threaded to the dissipater inlet member 73 in order to facilitate replacement of the dissipater inlet member 73. Of course, without being limited thereto, the present invention may be implemented by providing the energy dissipating pipe 72 integrally with the energy dissipating inlet member 73 or by fixing them together by a loose joint or the like.
The length of the lower end of the energy dissipation pipe 72 extending from the lower side of the filter sheet 50 is preferably 5cm to 15 cm. Therefore, the excessive air pressure on the lower side of the filter plate 50 can be discharged, and a better energy dissipation and pressure stabilization effect can be obtained. Furthermore, as mentioned above, the outside of the dissipater pipe 72 is joined seamlessly to the filter plate 50. In a preferred embodiment, sand and joint sealing material are used between the energy dissipation pipes 72 and the filter plates 50, and the energy dissipation pipes 72 are stably inserted into the filter plates 50. Therefore, the fastening and sealing effects are better.
In the invention, the pressure-stabilizing energy-dissipating devices 70 are arranged between the filter beams 30 on both sides and the walls 10c and 10d of the filter chamber 10 and between the adjacent filter beams 30 in the middle, and are arranged on both the front and rear sides of the filter chamber 10. Further, the stable pressure energy dissipaters 70 are installed near the pool walls 10a, 10b, and the energy dissipation pipes 72 are fixed by brackets. The specific structure is as follows.
As shown in fig. 2, the stabilizing energy dissipaters 70 are provided between the filter beams 30 on both sides and the walls 10c and 10d of the filter chamber 10 opposite to the filter beams 30 on both sides, and between the adjacent filter beams 30. In addition, the pressure stabilizing and energy dissipating devices 70 are provided near both side walls 10a and 10b of the filter chamber 10 connected to the filter beams 30. By providing a plurality of the pressure stabilizing and energy dissipating devices 70, the excess gas (water) on the lower side of the entire filter plate 50 in the filter chamber 10 can be discharged more effectively and uniformly, and the energy dissipation and pressure stabilization can be performed on the gas (water) layer on the lower side of the filter plate 50.
In the present invention, the energy dissipation pipes 72 of the stable pressure energy dissipation device 70 are preferably fixed to the tank walls 10a and 10b of the filter tank 10 on both sides connected to the filter beams 30 by brackets, respectively. Thereby further fastening each of the stable pressure energy dissipators 70 in the filter chamber 10.
In addition, based on the voltage-stabilizing energy dissipation device, the invention also provides a voltage-stabilizing energy dissipation method for the device. This method will be described in detail with reference to fig. 3. The voltage stabilizing and energy dissipating method of the invention comprises the following three steps S100, S110 and S120 in sequence.
In step S100, the air purge valve 21 and the energy dissipation valve 71 of the filter chamber 10 are automatically interlocked, so that the air purge valve 21 can be opened and closed simultaneously with the energy dissipation valve 71 in the automatic state, i.e. opened and closed simultaneously.
In step S110, the gas-water backwash is performed by opening the gas-wash valve 21, and at the same time, the pressure-stabilizing energy dissipation device 70 starts to operate to dissipate and stabilize the energy of the gas layer and the water layer (mainly the gas layer and also the water layer) on the lower side of the filter plate 50, that is, the gas-wash valve 21 is opened, the gas-water backwash operation is started on the filter chamber 10, accordingly, the energy dissipation valve 71 is opened along with the opening of the gas-wash valve 21 by the automatic interlock setting, and the gas and the water (mainly the gas and also including a small amount of water) on the lower side of the filter plate are discharged from the energy dissipation inlet component 73 through the energy dissipation pipe 72 and the energy dissipation valve 71 to the atmosphere under the action of the pressure difference, thereby dissipating and stabilizing the energy of the gas layer and the water layer on.
In step S120, when the air-water backwashing is not required, the air-water backwashing operation is ended, and at the same time, the pressure stabilizing and energy dissipating device 70 ends its operation, that is, the air purge valve 21 is closed, and the air-water backwashing operation is ended, and at the same time, the energy dissipating valve 71 is closed as the air purge valve 21 is closed by the automatic interlock setting.
According to the method of the invention, in the step S110, energy dissipation and pressure stabilization are performed on the gas layer (water layer) on the lower side of the filter plate 50, so that the problems that when the filter head 40 is polluted and blocked or polluted by algae breeding, backwash gas (water) cannot be timely released through the filter head 40, a high-pressure gas (water) layer is formed on the lower side of the filter plate 50, the briquetting of the filter plate 50 falls off, the top plate of the filter plate 50 collapses and the like can be prevented.
In conclusion, the invention can better solve the problems of filter plate briquetting falling, filter plate top plate and filter material collapse and the like caused by steep increase of pressure at the lower part of the filter plate due to the fact that the air (water) pressure at the lower layer of the filter plate can not be released when air-water backwashing operation is carried out due to filter head airflow pore gap blockage, algae breeding and the like by arranging the pressure stabilizing and energy dissipating device.
The pressure stabilizing and energy dissipating device of the filter tank and the method thereof are mainly used in the field of sewage treatment, but for those skilled in the art, the invention can be used in other related fields.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (10)
1. A filter pool is characterized in that the filter pool is provided with a filter chamber,
the filter is provided with a pressure stabilizing and energy dissipating device which comprises an energy dissipating valve, an energy dissipating pipe and an energy dissipating inlet part,
the energy dissipation valve is positioned above the filter tank, penetrates through a filter plate in the filter tank through the lower end of the energy dissipation valve and is positioned on the lower side of the filter plate, and is in threaded connection with the energy dissipation inlet part, and the outer side of the energy dissipation pipe is in seamless connection with the filter plate;
the energy dissipation valve is automatically interlocked with the air washing valve of the filter chamber, so that the energy dissipation valve can be opened and closed simultaneously with the air washing valve of the filter chamber in an automatic state.
2. The filter of claim 1,
the pressure stabilizing and energy dissipating devices are arranged between the filter beams on two sides and the wall of the filter tank opposite to the filter beams on the two sides, and between the adjacent filter beams.
3. The filter of claim 2,
the pressure stabilizing and energy dissipating devices are arranged near the tank walls on the two sides of the filter tank, which are connected with the filter beams.
4. A filter according to claim 3,
the energy dissipation pipes of the pressure stabilizing and energy dissipating device are respectively fixed on the walls of the filter tank on two sides connected with the filter beams through brackets.
5. The filter of claim 1,
the energy dissipation inlet part is in a bell mouth shape with a downward opening and an opening, the length of the energy dissipation inlet part is 5 cm-15 cm, and the diameter of a lower opening is gradually enlarged by 1.2-2 times compared with that of an upper opening.
6. The filter of claim 1,
the energy dissipation inlet part is in a bell mouth shape with a downward opening and is blocked by a pipe block or a blind plate, a plurality of holes are uniformly arranged on the periphery of the opening and are used as airflow channels, and the aperture of each hole is 3-8 mm.
7. The filter of claim 1,
the energy dissipation pipe is a steel pipe with the pipe diameter of 15 mm-32 mm,
the lower end of the energy dissipation pipe extends out of the lower side of the filter plate by 5-15 cm and is connected with the upper opening of the energy dissipation inlet component.
8. The filter of claim 1,
the energy dissipation valve of the pressure stabilizing energy dissipation device is an electromagnetic valve, an electric valve or a pneumatic valve.
9. The filter of claim 1,
and sand and joint filling sealing materials are adopted between the energy dissipation pipes and the filter plate layer.
10. A method of pressure stabilization and energy dissipation for a filter according to any one of claims 1 to 9,
the pressure stabilizing and energy dissipating method comprises the following steps:
the method comprises the following steps: automatically interlocking and setting the air washing valve and the energy dissipation valve of the filter tank, so that the air washing valve of the filter tank can be opened and closed simultaneously with the energy dissipation valve in an automatic state;
step two: performing air-water backwashing, and simultaneously starting the pressure-stabilizing and energy-dissipating device to work, namely opening the air washing valve, starting air-water backwashing operation on the filter tank, correspondingly, opening the energy-dissipating valve along with the opening of the air washing valve through automatic interlocking setting, and discharging gas and water on the lower side of the filter plate from the energy-dissipating inlet part through the energy-dissipating pipe and the energy-dissipating valve to directly pass through the atmosphere under the action of pressure difference, so as to dissipate and stabilize the energy of a gas layer and a water layer on the lower side of the filter plate;
step three: and finishing air-water backwashing, wherein the pressure stabilizing and energy dissipating device finishes working, namely closing the air washing valve and finishing air-water backwashing operation, and meanwhile, the energy dissipating valve is closed along with the closing of the air washing valve through the automatic interlocking setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711338797.6A CN108079627B (en) | 2017-12-14 | 2017-12-14 | Filter tank and pressure stabilizing and energy dissipating method for filter tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711338797.6A CN108079627B (en) | 2017-12-14 | 2017-12-14 | Filter tank and pressure stabilizing and energy dissipating method for filter tank |
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| CN108079627A CN108079627A (en) | 2018-05-29 |
| CN108079627B true CN108079627B (en) | 2020-06-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202465455U (en) * | 2012-01-05 | 2012-10-03 | 大连善水德水务工程有限责任公司 | Novel membrane concentrated water treatment device |
| CN206616062U (en) * | 2017-03-07 | 2017-11-07 | 鞍钢集团工程技术有限公司 | A kind of denitrification bio-filter backwash residual air accelerates tapping equipment |
| CN207641120U (en) * | 2017-12-14 | 2018-07-24 | 中持水务股份有限公司 | A kind of voltage stabilizing energy dissipator in filter tank |
-
2017
- 2017-12-14 CN CN201711338797.6A patent/CN108079627B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202465455U (en) * | 2012-01-05 | 2012-10-03 | 大连善水德水务工程有限责任公司 | Novel membrane concentrated water treatment device |
| CN206616062U (en) * | 2017-03-07 | 2017-11-07 | 鞍钢集团工程技术有限公司 | A kind of denitrification bio-filter backwash residual air accelerates tapping equipment |
| CN207641120U (en) * | 2017-12-14 | 2018-07-24 | 中持水务股份有限公司 | A kind of voltage stabilizing energy dissipator in filter tank |
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| Publication number | Publication date |
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| CN108079627A (en) | 2018-05-29 |
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