CN108057275B - Pressure-stabilizing energy dissipation and material leakage diagnosis system and method for filter tank - Google Patents
Pressure-stabilizing energy dissipation and material leakage diagnosis system and method for filter tank Download PDFInfo
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- CN108057275B CN108057275B CN201711338789.1A CN201711338789A CN108057275B CN 108057275 B CN108057275 B CN 108057275B CN 201711338789 A CN201711338789 A CN 201711338789A CN 108057275 B CN108057275 B CN 108057275B
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- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 116
- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000003745 diagnosis Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000005406 washing Methods 0.000 claims abstract description 31
- 238000011001 backwashing Methods 0.000 claims abstract description 26
- 230000000087 stabilizing effect Effects 0.000 claims description 29
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000003911 water pollution Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 description 6
- 241000195493 Cryptophyta Species 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
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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
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/153—Anti-leakage or anti-return valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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Abstract
The invention provides a pressure-stabilizing energy dissipation and material leakage diagnosis system and a method thereof for a filter tank, wherein the system comprises a pressure-stabilizing energy dissipation device and an air lifting device, the pressure-stabilizing energy dissipation device comprises an energy dissipation valve, an energy dissipation pipe and an energy dissipation 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 energy dissipation pipe on the lower side of the filter plate, and is in threaded connection with the energy dissipation inlet part, the outer side of the energy dissipation pipe is in seamless connection with the filter plate, the air lifting device comprises an air lifting pipeline and an air lifting valve, the inlet of the air lifting pipeline is connected with an air washing pipeline of the filter tank, an outlet vertical pipe of the air lifting pipeline is oppositely arranged with a certain distance from the energy dissipation inlet part of the pressure-. Therefore, the problems of the top plate of the filter plate and the like during air-water backwashing operation can be prevented, and the water quality at the lower side of the filter plate can be collected and whether leakage exists or not during the normal operation of the filter tank can be judged.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a pressure-stabilizing energy dissipation and material leakage diagnosis system and method for a 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.
In addition, when the lower part of the filter plate is dirty and blocked, the water pollution condition and the material leakage condition of the lower layer of the filter plate can not be known by fast sampling under the condition that the filter chamber is not cleaned and the operation of the filter chamber is not influenced.
Therefore, a system and method are needed to solve the following problems: (1) when the filter tank runs for a long time, the air-water channel is influenced by the dirt blockage of the filter head or the attachment and breeding of algae, and when the air-water backwashing operation is carried out, the stronger air (water) pressure cannot be released through the filter head and the filter layer, so that the problems of the falling of a filter plate top plate or a filter plate pressing block and the like are caused; (2) under the conditions that the filter tank does not stop running and is not cleaned, how to quickly collect the water quality of the lower layer of the filter plate and judge whether the filter material leaks from the lower part of the filter plate.
Disclosure of Invention
In order to solve the above problems, the present invention provides a pressure stabilizing energy dissipation and material leakage diagnostic system for a filter and a method thereof, which can not only prevent the problems of the falling off of a filter plate top plate or a filter plate pressing block caused by the fact that strong air (water) pressure cannot be released through a filter head and a filter layer when air-water backwashing is performed, but also can rapidly collect the water quality of the lower layer of the filter plate and judge whether the filter material leakage exists at the lower part of the filter plate without affecting the operation of the filter.
The pressure-stabilizing energy dissipation and material leakage diagnosis system of the filter tank comprises a pressure-stabilizing energy dissipation device and an air lifting device, wherein the pressure-stabilizing energy dissipation device comprises an energy dissipation valve, an energy dissipation pipe and an energy dissipation inlet component, 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 pipe and is positioned on the lower side of the filter plate, the energy dissipation pipe is in threaded connection with the energy dissipation inlet component, the outer side of the energy dissipation pipe is in seamless connection with the filter plate, the air lifting device comprises an air lifting pipeline and an air lifting valve, an inlet of the air lifting pipeline is connected with an air washing pipeline of the filter tank, an outlet vertical pipe of the air lifting pipeline and the energy dissipation inlet component of the pressure-stabilizing energy dissipation device are oppositely arranged at a certain distance through.
As a preferred technical solution of the present invention, the pressure stabilizing and energy dissipating devices are disposed between the filter beams on both sides and the walls of the filter tank opposite to the filter beams on both sides, and between the adjacent filter beams, and correspondingly, the gas stripping device is provided with a plurality of outlet vertical pipes on the gas stripping pipeline on the outlet side of the gas stripping valve, and the outlet vertical pipes are disposed opposite to the energy dissipating inlet components of the pressure stabilizing and energy dissipating devices at the same intervals.
As a preferred technical scheme of the invention, the pressure-stabilizing and energy-dissipating devices are arranged near the tank walls at two sides of the filter tank, which are connected with the filter beams, and correspondingly, two groups of the air lifting devices which respectively work with the pressure-stabilizing and energy-dissipating devices at two sides are arranged.
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 preferable technical scheme of the invention, the distance between the outlet vertical pipe of the gas stripping pipeline and the energy dissipation inlet part is 5-15 cm.
As a preferred technical solution of the present invention, the energy dissipation valve of the pressure stabilizing energy dissipation device and the gas stripping valve of the gas stripping device are solenoid valves, electric valves or pneumatic valves.
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 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 preferred technical scheme of the invention, the outlet vertical pipes of the gas stripping pipeline are arranged at the same height and are uniformly fixed on the wall of the filter tank.
The invention also provides a voltage-stabilizing energy dissipation and material leakage diagnosis method for the system, which sequentially 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: when the material leakage diagnosis is needed, the air lifting device is further enabled to start to work, namely, the air lifting valve is further opened under the condition that the air washing valve is kept opened to carry out air-water backwashing operation, the air lifting pipeline is started, air distribution of the air lifting pipeline and the air washing pipeline is adjusted, strong air pressure is discharged from the outlet vertical pipe of the air lifting pipeline to the energy dissipation inlet part, water on the lower side of the filter plate is discharged through the energy dissipation inlet part, the energy dissipation pipe and the energy dissipation valve through air lifting to carry out diagnosis, so that whether the material leakage condition exists on the lower side of the filter plate or not is evaluated, the water pollution condition on the lower layer of the filter plate is evaluated, the air lifting valve is closed after the material leakage diagnosis is finished, and the air lifting device is enabled to stop working; step four: 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 when the filter tank adopting the assembled filter plate is operated for a long time, because filter heads are blocked or polluted by algae breeding, backwash gas (water) is difficult to release through the filter heads in time when air-water backwashing operation is carried out, the pressure at the lower part of the filter plate is increased steeply, filter plate pressing blocks fall off, filter materials on a top plate of the filter plate collapse and the like are caused are solved; the air lifting device which is matched with the pressure stabilizing and energy dissipating device to work can quickly collect water samples at the lower layer of the filter plate, know the water layer pollution condition and judge whether the filter material leakage condition exists or not under the condition that the normal work of the filter tank is not influenced.
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 energy dissipation and leakage diagnosis system of a filter tank of the present invention;
FIG. 2 is a top view schematically showing a pressure-stabilizing energy dissipation and leakage diagnosis system of the filter tank of the present invention;
figure 3 is a flow chart schematically illustrating a regulated energy dissipation and leakage diagnostic method for the system 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 when air-water backwashing is carried out after the filter head 40 is blocked, the filter plate 50 is pressed strongly and a top plate collapses, whether material leakage exists in the filter 10 is diagnosed in time under the condition that normal operation of the filter 10 is not influenced, and physical and chemical indexes of analyzed pollutants in the lower layer of the filter plate are collected. The invention provides a pressure-stabilizing energy dissipation and material leakage diagnosis system of a filter, which comprises a pressure-stabilizing energy dissipation device 70 and an air lifting device 80, as shown in figure 1.
In particular, the pressure stabilising dissipater 70 comprises a dissipater valve 71, a dissipater pipe 72 and a dissipater inlet member 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.
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 the shape of a bell mouth with a downward opening and an opening, the length of the bell mouth is 5cm to 15cm, and the lower caliber is 1.2 to 2 times larger than the upper caliber; 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.
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.
In addition, the energy dissipation pipe 72 is a steel pipe with a pipe diameter of 15 mm-32 mm, and the lower end of the energy dissipation pipe 72 extends 5 cm-15 cm from the lower side of the filter plate and is connected with the upper opening of the energy dissipation inlet component 73. 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.
Further, the air stripping device 80 comprises an air stripping pipeline 81 and an air stripping valve 82. The inlet of the gas stripping pipeline 81 is connected with the gas washing pipeline 20 of the filter chamber 10, and the outlet vertical pipe 83 of the gas stripping pipeline 81 and the energy dissipation inlet component 73 of the pressure stabilizing and energy dissipating device 70 are oppositely arranged at a certain distance through the gas stripping valve 82 arranged on the gas stripping pipeline 20. The outlet vertical pipes 83 of the gas stripping pipelines 81 are uniformly fixed on the wall of the filter tank at the same height by adopting angle steel and U-shaped hooping rows, and are preferably fixed on the walls 10a and 10b of the filter tank 10 at two sides connected with the filter beams 30. Of course, other fixing modes can be adopted as long as the row-by-row uniform fixing can be realized. In a preferred embodiment, the outlet riser 83 of the stripping pipe 81 is spaced from the energy dissipating inlet component 73 by a distance of 5cm to 15 cm. Thereby, the best air stripping effect can be obtained, water on the lower side of the filter plate 50 is rapidly flushed into the energy dissipation pipe 72 to be discharged, and further, whether leakage exists in the filter chamber 10 can be evaluated by detecting the discharged water. Furthermore, the stripping valve 82 of the stripping device 80, the energy dissipation valve 71 of the energy dissipation device 70 may be solenoid valves, electric valves or pneumatic valves; the air purge valve 21 may be an electric valve or a pneumatic valve.
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 pressure stabilizing energy dissipater 70 is provided between the filter beams 30 on both sides and the cell walls 10c and 10d of the filter cell 10 opposite to the filter beams 30 on both sides, and between the adjacent filter beams 30, and accordingly, the gas stripping device 80 is provided with a plurality of outlet vertical pipes 83 on the gas stripping pipeline 81 on the outlet side of the gas stripping valve 82, and the outlet vertical pipes 83 are respectively provided opposite to the energy dissipation inlet members 73 of the pressure stabilizing energy dissipater 70 at the same distance, for example, 5cm to 15 cm. In addition, the pressure stabilizing and energy dissipating devices 70 are disposed near the tank walls 10a and 10b of the filter tank 10, which are connected to the filter beams 30, and accordingly, two sets of the air lifting devices 80 are disposed to cooperate with the pressure stabilizing and energy dissipating devices 70. By providing a plurality of the energy dissipaters 70 and two sets of the air lifters 80 cooperating with the energy dissipaters 70, not only can the excess gas (water) under the entire filter plate 50 in the filter chamber 10 be discharged more effectively and evenly, but also the existence of material leakage under the filter plate 50 of the filter chamber 10 can be judged by diagnosing the discharged water, further, the concrete position of material leakage can be finally determined by comparing the concentration of the water discharged from each energy dissipater 70, and in addition, the severity of material leakage and the like can be determined by the concentration of the water discharged from each energy dissipater 70.
In the invention, the energy dissipation pipes 72 of the pressure stabilizing and energy dissipating device 70 are respectively fixed on the tank walls 10a and 10b on two sides of the filter tank 10 connected with the filter beams 30 through brackets. 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 and material leakage diagnosis system, the invention also provides a voltage-stabilizing energy dissipation and material leakage diagnosis method for the system. This method will be described in detail with reference to fig. 3. The method for diagnosing the energy dissipation and the leakage of the energy-saving energy.
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. Further, it is determined whether or not the missing diagnosis is performed, and when the missing diagnosis is necessary, the process proceeds to step S120, and when the missing diagnosis is not necessary, the process proceeds to step S130.
In step S120, when the material leakage diagnosis is needed, the air lifting device 80 is operated to perform the material leakage diagnosis on the filter tank 10, that is, the air lifting valve 82 is further opened while the operation of the air washing valve 21 is kept open to perform the air-water backwashing (including the single air washing and the air-water combined backwashing as described above), the air lifting pipeline 81 is started, the air distribution between the air lifting pipeline 81 and the air washing pipeline 20 is adjusted, the strong air pressure is discharged from the outlet vertical pipe 83 of the air lifting pipeline 81 to the energy dissipation inlet component 73, the water on the lower side of the filter plate 50 is discharged through the energy dissipation inlet component 73, the energy dissipation pipe 72 and the energy dissipation valve 71 by air lifting to perform the diagnosis, so as to evaluate whether the material leakage exists on the lower side of the filter plate 50 and judge the specific material leakage position, and evaluate the water pollution condition on the lower layer of the filter plate, after the leakage diagnosis is finished, the air stripping valve 82 is closed, the air stripping device 80 stops working, and the process goes to step S130.
In step S130, 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 material on the top plate of the filter plate collapses and the like can be prevented. In addition, through step S120, a water sample on the lower side of the filter plate 50 can be collected quickly without stopping the operation of the filter chamber 10 and without emptying the water in the filter chamber, and the water sample on the lower side of the filter plate 50 can be collected to the upper side of the water surface through the cooperation of the air lifting device 80 and the pressure stabilizing and energy dissipating device 70. By the method, the pollution condition of the water layer on the lower side of the filter plate 50 can be quickly sampled and known, and whether the filter material leaks from the lower side of the filter plate 50 or not, the specific position and severity of the leaked material and the like can be further judged.
In conclusion, by arranging the pressure stabilizing and energy dissipating device and the air lifting device, the problems that the pressure at the lower part of the filter plate is increased steeply to cause the falling of a filter plate pressing block and the collapse of a filter material at a top plate of the filter plate and the like because the air flow pore gaps of the filter head are blocked and algae are bred and the like and the air (water) pressure at the lower layer of the filter plate cannot be released when air-water backwashing is carried out can be solved; and, can be under the condition that does not influence the normal work of filtering pond, gather filter plate lower floor water sample fast, know the water layer pollution condition, judge whether there is the filter material condition of leaking.
The system and the method for diagnosing the energy dissipation and the material leakage under the stable pressure of the filter tank are mainly used in the field of sewage treatment, but the invention can be used in other related fields as well as can be realized by the technical personnel in the field.
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 pressure stabilizing energy dissipation and material leakage diagnosis system of a filter tank is characterized in that,
the pressure-stabilizing energy dissipation and leakage diagnosis system comprises a pressure-stabilizing energy dissipation device and an air lifting device,
the pressure stabilizing and energy dissipating device comprises an energy dissipating valve, an energy dissipating pipe and an energy dissipating inlet part, 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 valve and is positioned on the energy dissipating pipe on the lower side of the filter plate, and is in threaded connection with the energy dissipating inlet part;
the air lifting device comprises an air lifting pipeline and an air lifting valve, an inlet of the air lifting pipeline is connected with an air washing pipeline of the filter, an outlet vertical pipe of the air lifting pipeline and the energy dissipation inlet part of the pressure stabilizing and energy dissipating device are oppositely arranged at a certain distance through the air lifting valve arranged on the air lifting pipeline, and the energy dissipation inlet part is in a horn mouth shape with a downward opening and an opening.
2. The regulated energy dissipation and skip diagnosis system according to 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,
correspondingly, the gas stripping device is provided with a plurality of outlet vertical pipes on the gas stripping pipeline on the outlet side of the gas stripping valve, and the outlet vertical pipes are oppositely arranged at the same interval with the energy dissipation inlet parts of the pressure stabilizing and energy dissipating devices.
3. The pressure stabilizing energy dissipation and leakage diagnosis system according to claim 2,
the pressure stabilizing and energy dissipating devices are arranged near the tank walls at the two sides of the filter tank connected with the filter beams,
correspondingly, two groups of the air lifting devices are arranged and respectively matched with the pressure stabilizing and energy dissipating devices on the two sides.
4. The regulated energy dissipation and skip diagnosis system 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 regulated energy dissipation and skip diagnosis system according to claim 1,
the distance between the outlet vertical pipe of the gas stripping pipeline and the energy dissipation inlet part is 5-15 cm.
6. The regulated energy dissipation and skip diagnosis system according to claim 1,
the energy dissipation valve of the pressure stabilizing energy dissipation device and the gas stripping valve of the gas stripping device are electromagnetic valves, electric valves or pneumatic valves.
7. The regulated energy dissipation and skip diagnosis system according to 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.
8. The regulated energy dissipation and skip diagnosis system according to 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.
9. The regulated energy dissipation and skip diagnosis system according to claim 1,
the outlet vertical pipes of the gas stripping pipeline are arranged at the same height and are uniformly fixed on the wall of the filter tank.
10. A method for diagnosing steady-pressure energy dissipation and leakage in a system according to any one of claims 1 to 9,
the voltage-stabilizing energy dissipation and leakage diagnosis method sequentially 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: when the material leakage diagnosis is needed, the air lifting device is further enabled to start to work, namely, the air lifting valve is further opened under the condition that the air washing valve is kept opened to carry out air-water backwashing operation, the air lifting pipeline is started, air distribution of the air lifting pipeline and the air washing pipeline is adjusted, strong air pressure is discharged from the outlet vertical pipe of the air lifting pipeline to the energy dissipation inlet part, water on the lower side of the filter plate is discharged through the energy dissipation inlet part, the energy dissipation pipe and the energy dissipation valve in sequence through air lifting to carry out diagnosis, so that whether the material leakage condition exists on the lower side of the filter plate or not is evaluated, the water pollution condition on the lower layer of the filter plate is evaluated, and the air lifting valve is closed after the material leakage diagnosis is finished, so that the air lifting device stops working;
step four: 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.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102389657A (en) * | 2011-11-25 | 2012-03-28 | 罗文峰 | Continuous sand filtration apparatus |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102389657A (en) * | 2011-11-25 | 2012-03-28 | 罗文峰 | Continuous sand filtration apparatus |
| 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 |
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