CN112960751A - Automatic circulating reflux device and method for micro-sand in seawater pretreatment - Google Patents
Automatic circulating reflux device and method for micro-sand in seawater pretreatment Download PDFInfo
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- 239000004576 sand Substances 0.000 title claims abstract description 384
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000010992 reflux Methods 0.000 title claims abstract description 51
- 239000013535 sea water Substances 0.000 title claims abstract description 43
- 238000005488 sandblasting Methods 0.000 claims abstract description 79
- 230000008569 process Effects 0.000 claims abstract description 47
- 238000005192 partition Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 110
- 239000002245 particle Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- 239000006096 absorbing agent Substances 0.000 claims description 11
- 238000011001 backwashing Methods 0.000 claims description 11
- 239000010802 sludge Substances 0.000 claims description 11
- 238000005189 flocculation Methods 0.000 claims description 10
- 230000016615 flocculation Effects 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 230000001788 irregular Effects 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000002026 carminative effect Effects 0.000 claims 1
- 238000001556 precipitation Methods 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 244000035744 Hura crepitans Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 208000037805 labour Diseases 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5209—Regulation methods for flocculation or precipitation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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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
- C02F2103/08—Seawater, e.g. for desalination
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
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Abstract
The invention relates to the technical field of seawater pretreatment, in particular to an automatic micro-sand circulation reflux device for seawater pretreatment, which comprises a sand storage tank, a sand blasting tank, a flow divider and a micro-sand injector, wherein the sand storage tank is arranged at the upper end of the sand blasting tank, the sand storage tank and the sand blasting tank are in an integrated connection structure, one side of the sand storage tank is connected with an exhaust control valve for exhausting air, the lower end of the sand blasting tank is provided with an oscillator, the sand storage tank is provided with a micro-sand feeding port, a partition and a micro-sand feeding valve are arranged between the sand storage tank and the sand blasting tank, the micro-sand injector is connected to the lower end of the sand blasting tank, the micro-sand injector and the flow divider are mutually connected through a pipeline, and the pipeline is provided with a flow sampler. The invention realizes the continuous, accurate and efficient micro-sand adding process by using seawater pretreatment micro-sand backflow seawater as a main power source and compressed air as an auxiliary power source. The device has the characteristics of simple operation, stable performance, wide application, high precision, convenience, practicability, low cost and the like.
Description
Technical Field
The invention relates to the technical field of seawater pretreatment, in particular to an automatic circulating reflux device and method for seawater pretreatment micro-sand.
Background
At present, the high-efficiency precipitation technology is actually the combination of mechanical coagulation, flocculation and inclined tube (plate) precipitation technology, compared with the conventional hydraulic coagulation and flocculation, the high-efficiency precipitation technology enhances the coagulation and flocculation effects, further improves the precipitation efficiency of an inclined tube (plate) precipitation tank, and particularly has a better removal effect on suspended matters and non-soluble organic pollutants in raw water. Therefore, the process is widely used for pretreatment of water supply and sewage and advanced treatment of sewage. The micro sand is added into the flocculation tank to serve as the core of the floc, and the density of the floc formed by taking the micro sand as the core is very high, so that the floc is easier to separate from water and settle, and the ascending flow rate and the treatment efficiency are improved.
At present, the sand is added by manually conveying the sand to the sand box by a shovel or manually carrying a sand bag. However, the manual addition of sand by using a shovel or the manual loading of sand bags has the problems of low working efficiency and high labor intensity; and sand is easy to fall to cause ground pollution in the sand adding process, and the ground needs to be cleaned after the sand adding operation is finished, so that the secondary labor of the ground cleaning work is increased. Since the position of the locomotive sand box is flat, it is difficult to perform sanding using conventional sanding equipment. Technical problems to be solved are urgently needed by those skilled in the art.
The prior art has the following defects:
(1) the prior art relates to manual carrying of the micro-sand, which is limited by time and cannot realize the whole day micro-sand carrying process.
(2) The prior art relates to a method for conveying micro-sand, which has large conveying capacity and complex conveying process and often needs mechanical equipment.
(3) The prior art relates to hoisting machinery equipment handling process and has great safety risk and a great deal of uncontrollable factor, increases the safety control degree of difficulty.
(4) In the prior art, a certain time concentration mode is usually adopted in the micro-sand adding process, the stirrer power of a mixing water tank is increased, and the mixing settling time of a seawater pretreatment water tank is prolonged.
(5) The prior art relates to the intermittent fluctuation of the sand content of the outlet water in the water treatment process of a seawater pretreatment coagulating sedimentation tank, which influences the water quality of the inlet water of a seawater desalination device.
(6) In the prior art, the micro-sand adding process flow is complex, can be realized only by implementing large-range adjustment on the original device, and cannot perform a precise adjustment process aiming at the pretreated water inflow.
Therefore, there is a need for an automatic circulating reflux device for seawater pretreatment micro-sand and a method thereof, which can solve the above problems.
Disclosure of Invention
The invention provides an automatic circulating reflux device and method for seawater pretreatment micro-sand. The device has the characteristics of simple operation, stable performance, wide application, high precision, convenience, practicability, low cost and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: an automatic circulating reflux device for micro-sand in seawater pretreatment, which comprises a sand storage tank, a sand blasting tank, a flow divider and a micro-sand ejector, the sand storage tank is arranged at the upper end of the sand blasting tank, an integral connecting structure is formed between the sand storage tank and the sand blasting tank, one side of the sand storage tank is connected with an exhaust control valve for exhausting air, the lower end of the sand blasting tank is provided with an oscillator, the sand storage tank is provided with a micro-sand feeding port, a partition and a micro-sand feeding valve are arranged between the sand storage tank and the sand blasting tank, the micro-sand ejector is connected with the lower end of the sand blasting tank, the micro-sand ejector and the flow divider are mutually connected through a pipeline, the pipeline is provided with a flow sampler, one side of the sand storage tank is provided with a water absorber, the sand storage tank and the water absorber are mutually connected through a pipeline, and the pipeline is provided with an air source throttle valve and a standby control valve.
Further, one side of the micro-sand ejector is provided with a first micro-sand circulating pump, the micro-sand ejector is connected with the first micro-sand circulating pump through a pipeline, and a first water source control valve is installed on the pipeline.
Furthermore, a second micro-sand circulating pump is arranged at the lower end of the first micro-sand circulating pump, the first micro-sand circulating pump and the second micro-sand circulating pump are connected with each other through a pipeline, and a continuous backwashing filter is mounted on the pipeline.
Further, one side of shunt is provided with the fine sand backward flow ware, is provided with the fine sand counter at the lower extreme of fine sand backward flow ware, through pipeline interconnect between the output of second fine sand circulating pump and the fine sand backward flow ware, install silt separator and second water source control valve on this pipeline.
Furthermore, a micro-sand filter screen is arranged in the sand storage tank and used for filtering larger particles or irregular micro-sand particles.
Further, a flow controller is installed at the lower end of the sand blasting tank.
Further, a spiral stirrer is installed on one side of the lower end of the sand blasting tank.
Furthermore, a control system is arranged at the upper end of the sand storage tank, and is respectively in controllable connection with the oscillator, the air source control valve, the air source throttling valve, the liquid level controller, the spiral stirrer, the flow controller, the standby control valve, the micro-sand feeding valve, the flow sampler, the continuous backwashing filter, the first micro-sand circulating pump, the second micro-sand circulating pump, the first water source control valve, the second water source control valve, the air exhaust control valve and the micro-sand meter, and realizes independent control or interlocking control process according to the control system.
Furthermore, a plurality of nozzles are installed on the flow divider, the nozzles are of a spiral structure with a ceramic lining structure, and the spraying ranges of the nozzles are mutually overlapped in an alternating mode and are used for ensuring that the micro-sand is uniformly distributed on the water surface.
A method for conveying a seawater pretreatment micro-sand automatic circulation reflux device comprises the following steps: firstly, adding a micro-sand material into a sand storage tank, starting a control system, and realizing an independent control or interlocking control process according to the control system; the micro-sand feeding port is positioned above the sand storage tank and the sand blasting tank and is used for a micro-sand feeding inlet, the sand storage tank and the sand blasting tank adopt tank body structures made of the same material, a partition and a micro-sand feeding valve are arranged between the sand storage tank and the sand blasting tank, a micro-sand filter screen is arranged in the sand storage tank and is used for filtering larger particles or irregular micro-sand particles to ensure natural suction of a micro-sand ejector, the sand storage tank is used for temporarily storing micro-sand to prolong the micro-sand feeding period, and the micro-sand feeding valve is used for controlling the micro-sand feeding amount in the sand blasting tank and ensuring the tightness of the sand blasting tank; the liquid level controller, the oscillator, the air source throttle valve and the exhaust control valve are respectively and fixedly connected with the side wall of the sand blasting tank, the sand blasting tank is of a pressure-bearing tank body structure, and the opening degree of the air source throttle valve is adjusted by the control system in the micro-sand feeding process to maintain a positive pressure state for providing auxiliary power for the micro-sand ejector; the exhaust control valve is connected with the outside of the sand blasting tank, the open state is used for exhausting the pressure in the tank body, the micro-sand feeding valve is used for supplementing sand, and the close state is used for ensuring the tightness of the sand blasting tank; the liquid level controller monitors the micro-sand storage amount in the sand blasting tank and feeds back signals to the control system to add micro-sand in due time; the oscillator adopts an intermittent oscillation mode, so that the unsmooth deposition and blanking of micro sand hardening at the middle upper part are avoided; the spiral stirrer loosens the micro sand at the lower part of the sand blasting tank in a rotary thrust screw form, so that the micro flow control of a flow controller is convenient to adjust; the flow sampler monitors the concentration content of the added micro-sand in real time and feeds back a data signal to the control system; the micro-sand meter monitors the concentration content of the added micro-sand in real time and feeds back a data signal to the control system; the flow controller automatically adjusts the micro-sand putting amount through a control system according to data signals fed back by the flow sampler and the micro-sand meter, and maintains the whole micro-sand content in the pool in a balanced state; the air source control valve is a compressed air source control primary valve and is used for directly connecting or isolating an air source; the water absorber adopts a filter of a water absorbing filter element and is used for filtering water and a small amount of impurities in a compressed air source, so that micro sand in the sand blasting tank is prevented from moisture absorption and hardening; the standby control valve provides a standby power source for the micro-sand ejector; the micro-sand ejector takes the pressurized seawater or compressed air source as power through the negative pressure generated inside, and sucks micro-sand through a descending port of the flow controller; the sand-water mixture is uniformly distributed to a plurality of spraying groups by the flow divider, and each spraying group comprises a plurality of nozzles; the nozzles are in a spiral structure form with a ceramic lining structure, and the spraying ranges of the nozzles are mutually overlapped alternately, so that the micro-sand is ensured to be uniformly distributed on the water surface; the continuous backwashing filter is positioned at the inlet end of the micro-sand reflux pump and is used for intercepting part of larger impurity particles so as to avoid blocking the micro-sand ejector; the first micro-sand reflux pump and the second micro-sand reflux pump are in a parallel mode to realize a mutual standby state; the first water source control valve and the second water source control valve are respectively positioned at the outlet ends of the first micro-sand reflux pump and the second micro-sand reflux pump and are respectively used for regulating the water source flow and the pressure regulation process of the micro-sand ejector and the sediment separator according to the logic program of the control system; the backflow control valve reflows part of the water source to the inlet end of the micro-sand backflow pump and is used for assisting the water source control valve to adjust the flow and pressure process of the water source; the silt separator is positioned at the inlet end of the micro-sand reflux device, and the slime wrapped on the outer surface of the micro-sand is separated by arranging the reciprocating disturbance isolation baffle; the micro-sand backflow device utilizes tangential water flow to float on slime through the sludge conveying pipeline to the sludge concentration tank under the action of centrifugal force, and micro-sand sinks to return to the water tank again to continuously participate in flocculation and sedimentation processes in the water treatment process, so that the automatic circulation backflow comprehensive utilization of the micro-sand is realized.
The invention has the advantages that: compared with the prior art, the invention has the following advantages and effects:
1. the invention realizes the continuous, accurate and efficient micro-sand adding process by using seawater pretreatment micro-sand backflow seawater as a main power source and compressed air as an auxiliary power source. The device has the characteristics of simple operation, stable performance, wide application, high precision, convenience, practicability, low cost and the like.
2. The invention can automatically control the micro-sand throwing amount of the flow controller according to the water quality and water quantity change condition of the seawater pretreatment inlet water and the feedback data signals of the flow sampler and the micro-sand meter, thereby realizing the continuous, automatic and accurate throwing process of the micro-sand in the seawater pretreatment.
3. The control system is respectively in controllable connection with the oscillator, the air source control valve, the air source throttling valve, the liquid level controller, the spiral stirrer, the flow controller, the standby control valve, the micro-sand feeding valve, the flow sampler, the continuous backwashing filter, the first micro-sand circulating pump, the second micro-sand circulating pump, the first water source control valve, the second water source control valve, the air exhaust control valve and the micro-sand meter, and realizes independent control or interlocking control process according to the control system.
4. The sand storage tank is positioned above the sand blasting tank, adopts a tank body structure made of the same material, and is provided with a partition and a micro-sand feeding valve; the inside of the sand storage tank is provided with a micro-sand filter screen for filtering larger particles or irregular micro-sand particles to ensure the natural suction of the micro-sand ejector, and the sand storage tank is used for temporarily storing micro-sand to prolong the micro-sand adding period.
5. The invention adopts the intermittent oscillator to avoid the unsmooth deposition and blanking of micro-sand hardening at the middle upper part; the spiral stirrer is adopted to loosen the micro sand at the lower part of the sand blasting tank in a rotary thrust screw form, so that the micro flow control of the flow controller is convenient to adjust.
6. The invention adopts the water absorber (filter of the water absorbing filter element) for filtering water and a small amount of impurities in the compressed air source, and avoids micro-sand moisture absorption and hardening in the sand blasting tank.
7. The invention adopts a micro-sand ejector to suck micro-sand through a descending port of a flow controller by using negative pressure generated by a double power source (pressurized seawater or a compressed air source) through the inside as power.
8. The invention adopts a first micro-sand reflux pump and a second micro-sand reflux pump in parallel to realize a mutual standby state; the water source flow and pressure adjusting processes of the micro-sand ejector and the sediment separator are respectively adjusted through the first water source control valve and the second water source control valve according to the logic program of the control system.
9. The silt separator is adopted to separate slime wrapped on the outer surface of the micro-sand by arranging the reciprocating disturbance isolation baffle, and the micro-sand sinks to return to the water tank again to continuously participate in flocculation and sedimentation processes in the water treatment process under the action of centrifugal force by utilizing tangential water flow through the micro-sand backflow device, so that the automatic circulating backflow comprehensive utilization of the micro-sand is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
wherein:
1. a control system; 2. a sand storage tank; 3. a sand blasting tank; 4. an oscillator; 5. a micro-sand ejector; 6. a gas source control valve; 7. a water absorber; 8. an air source throttle valve; 9. a liquid level controller; 10. a screw mixer; 11. a flow controller; 12. a backup control valve; 13. a micro-sand feed port; 14. a fine sand feed valve; 15. a flow sampler; 16. a flow divider; 17. a nozzle; 18. a micro-sand reflux device; 19. continuously backwashing the filter; 20. a reflux control valve; 21. a first micro-sand circulating pump 22 and a second micro-sand circulating pump; 23. a silt separator; 24. a first water source control valve; 25. a second water source control valve; 26. an exhaust control valve; 27. a micro-sand meter;
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly specified or limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
fig. 1 is a schematic structural view of the present invention, and the present invention is an automatic circulating reflux apparatus for seawater pretreatment micro-sand and a method thereof shown in fig. 1, wherein the present invention uses pressurized micro-sand reflux seawater as a main power source and compressed air as an auxiliary power source.
The micro-sand adding process comprises the following steps: little sand gets into the sand storage tank for subsequent use behind the little sand charge door, the little sand filter screen, according to the liquid level controller feedback signal that sandblast tank bottom set up, control system closes the air supply choke valve, open the air discharge control valve, little sand feed valve adds little sand to the sandblast jar, little sand is thrown the process and is kept the air supply choke valve to open, air discharge control valve and little sand feed valve all are in and close, guarantee that sandblast jar inside is in the malleation environment, simultaneously through the oscillator, guarantee the accurate little sand ejector that inhales of little sand flow under the combined action of screw mixer and flow controller.
(II) a micro-sand backflow process: the micro-sand backflow seawater passes through a continuous back-flushing filter, a first micro-sand circulating pump, a second micro-sand circulating pump, a first water source control valve and a second water source control valve, wherein one part of the micro-sand backflow seawater passes through a silt separator and then enters a micro-sand backflow device, sludge after cyclone separation is collected to a sludge concentration tank through a sludge conveying pipe, and micro-sand after cyclone sedimentation flows back to a water pool through a micro-sand meter; the other part enters the water tank through a micro-sand ejector, a flow sampler, a flow divider and a nozzle, micro-sand reflowed in the two modes circularly participates in the flocculation and sedimentation processes in the water treatment process under the action of a stirrer, and a control system automatically controls the micro-sand input amount of a flow controller according to the water quality and water amount change condition of the seawater pretreatment inlet water and the feedback data signals of the flow sampler and the micro-sand meter, so that the continuous, automatic and accurate micro-sand input process of the seawater pretreatment is realized.
Example 2:
fig. 1 is a schematic structural view of the present invention, and fig. 1 shows an automatic circulating reflux apparatus for seawater pretreatment micro sand, which includes: 1. the system comprises a control system 2, a sand storage tank 3, a sand blasting tank 4, an oscillator 5, a micro-sand ejector 6, an air source control valve 7, a water absorber 8, an air source throttle valve 9, a liquid level controller 10, a spiral stirrer 11, a flow controller 12, a standby control valve 13, a micro-sand feed port 14, a micro-sand feed valve 15, a flow sampler 16, a flow divider 17, a nozzle 18, a micro-sand reflux device 19, a continuous backwashing filter 20, a reflux control valve 21, a first micro-sand circulating pump 22, a second micro-sand circulating pump 23, a sediment separator 24, a first water source control valve 25, a second water source control valve 26, an exhaust control valve, 27 and a micro-sand meter; the control system is respectively in controllable connection with the oscillator, the air source control valve, the air source throttling valve, the liquid level controller, the spiral stirrer, the flow controller, the standby control valve, the micro-sand feeding valve, the flow sampler, the continuous backwashing filter, the first micro-sand circulating pump, the second micro-sand circulating pump, the first water source control valve, the second water source control valve, the exhaust control valve and the micro-sand meter, and realizes an independent control or interlocking control process according to the control system; the micro-sand feeding port 13 is positioned above the sand storage tank 2 and the sand blasting tank 3 and is used for a micro-sand feeding inlet; the sand storage tank 2 and the sand blasting tank 3 adopt tank body structures made of the same material, and a partition and a micro-sand feeding valve 14 are arranged between the two; the inside of the sand storage tank is provided with a micro-sand filter screen for filtering larger particles or irregular micro-sand particles to ensure the natural suction of a micro-sand ejector, and the sand storage tank is used for temporarily storing micro-sand to prolong the micro-sand adding period; the micro-sand feeding valve 14 is used for controlling the adding amount of micro-sand in the sand blasting tank and ensuring the tightness of the sand blasting tank; the liquid level controller 9, the oscillator 4, the air source throttling valve 8 and the exhaust control valve 26 are respectively and fixedly connected with the side wall of the sand blasting tank; the sand blasting tank 3 is of a pressure-bearing tank body structure, and the opening of the air source throttle valve 8 is adjusted by the control system 1 in the micro-sand feeding process to maintain a positive pressure state, so as to provide auxiliary power for the micro-sand ejector; the exhaust control valve is connected with the outside of the sand blasting tank, the open state is used for exhausting the pressure in the tank body, the micro-sand feeding valve is used for supplementing sand, and the close state is used for ensuring the tightness of the sand blasting tank.
Example 3:
fig. 1 is a schematic structural diagram of the present invention, and is an automatic circulating reflux device for micro-sand in seawater pretreatment as shown in fig. 1, wherein a liquid level controller monitors the micro-sand storage amount in a sand blasting tank and feeds back a signal to a control system to add micro-sand at the right time; the oscillator adopts an intermittent oscillation mode, so that the unsmooth deposition and blanking of micro sand hardening at the middle upper part are avoided; the spiral stirrer 10 adopts a rotary thrust screw rod form to loosen micro sand at the lower part of the sand blasting tank, so that the micro flow control adjustment of the flow controller 11 is facilitated; the flow sampler 15 monitors the concentration content of the added micro-sand in real time and feeds back a data signal to the control system; the micro-sand meter 27 monitors the concentration content of the added micro-sand in real time and feeds back a data signal to the control system; the flow controller automatically adjusts the micro-sand input amount through a control system according to data signals fed back by the flow sampler 15 and the micro-sand meter 27, and maintains the micro-sand content in the pool to be in a balanced state as a whole; the air source control valve 6 is a compressed air source control primary valve and is used for directly connecting or isolating an air source; the water absorber 7 adopts a filter of a water absorbing filter element and is used for filtering water and a small amount of impurities in a compressed air source, so that micro-sand in the sand blasting tank is prevented from moisture absorption and hardening; the standby control valve provides a standby power source for the micro-sand ejector; the micro-sand ejector 5 takes the pressurized seawater or the pressurized air source as power through the negative pressure generated inside, and sucks the micro-sand through the descending port of the flow controller.
Example 4:
fig. 1 is a schematic structural view of the present invention, and as shown in fig. 1, the automatic circulating reflux device for seawater pretreatment micro-sand, the flow divider 16 uniformly distributes a sand-water mixture to a plurality of spray groups, and each spray group comprises a plurality of nozzles 17; the nozzles are in a spiral structure form with a ceramic lining structure, and the spraying ranges of the nozzles are mutually overlapped alternately, so that the micro-sand is ensured to be uniformly distributed on the water surface; the continuous backwashing filter 19 is positioned at the inlet end of the micro-sand reflux pump and is used for intercepting part of larger impurity particles to avoid blocking the micro-sand ejector 5; the first micro-sand backflow pump 21 and the second micro-sand backflow pump 22 are in a parallel mode to achieve a standby state; the first water source control valve 24 and the second water source control valve 25 are respectively positioned at the outlet ends of the first micro-sand reflux pump and the second micro-sand reflux pump and are respectively used for regulating the water source flow and the pressure regulating processes of the micro-sand ejector 5 and the sediment separator 23 according to the logic program of the control system; the backflow control valve 20 reflows part of the water source to the inlet end of the micro-sand backflow pump, and is used for assisting the water source control valve to adjust the flow and pressure process of the water source; the silt separator is positioned at the inlet end of the micro-sand reflux device, and the slime wrapped on the outer surface of the micro-sand is separated by arranging the reciprocating disturbance isolation baffle; the micro-sand backflow device utilizes tangential water flow to float on slime through the sludge conveying pipeline to the sludge concentration tank under the action of centrifugal force, and micro-sand sinks to return to the water tank again to continuously participate in flocculation and sedimentation processes in the water treatment process, so that the automatic circulation backflow comprehensive utilization of the micro-sand is realized.
The working mode is as follows: when in use, the invention comprises the following steps: firstly, adding a micro-sand material into a sand storage tank, starting a control system, and realizing an independent control or interlocking control process according to the control system; the micro-sand feeding port is positioned above the sand storage tank and the sand blasting tank and is used for a micro-sand feeding inlet, the sand storage tank and the sand blasting tank adopt tank body structures made of the same material, a partition and a micro-sand feeding valve are arranged between the sand storage tank and the sand blasting tank, a micro-sand filter screen is arranged in the sand storage tank and is used for filtering larger particles or irregular micro-sand particles to ensure natural suction of a micro-sand ejector, the sand storage tank is used for temporarily storing micro-sand to prolong the micro-sand feeding period, and the micro-sand feeding valve is used for controlling the micro-sand feeding amount in the sand blasting tank and ensuring the tightness of the sand blasting tank; the liquid level controller, the oscillator, the air source throttle valve and the exhaust control valve are respectively and fixedly connected with the side wall of the sand blasting tank, the sand blasting tank is of a pressure-bearing tank body structure, and the opening degree of the air source throttle valve is adjusted by the control system in the micro-sand feeding process to maintain a positive pressure state for providing auxiliary power for the micro-sand ejector; the exhaust control valve is connected with the outside of the sand blasting tank, the open state is used for exhausting the pressure in the tank body, the micro-sand feeding valve is used for supplementing sand, and the close state is used for ensuring the tightness of the sand blasting tank; the liquid level controller monitors the micro-sand storage amount in the sand blasting tank and feeds back signals to the control system to add micro-sand in due time; the oscillator adopts an intermittent oscillation mode, so that the unsmooth deposition and blanking of micro sand hardening at the middle upper part are avoided; the spiral stirrer loosens the micro sand at the lower part of the sand blasting tank in a rotary thrust screw form, so that the micro flow control of a flow controller is convenient to adjust; the flow sampler monitors the concentration content of the added micro-sand in real time and feeds back a data signal to the control system; the micro-sand meter monitors the concentration content of the added micro-sand in real time and feeds back a data signal to the control system; the flow controller automatically adjusts the micro-sand putting amount through a control system according to data signals fed back by the flow sampler and the micro-sand meter, and maintains the whole micro-sand content in the pool in a balanced state; the air source control valve is a compressed air source control primary valve and is used for directly connecting or isolating an air source; the water absorber adopts a filter of a water absorbing filter element and is used for filtering water and a small amount of impurities in a compressed air source, so that micro sand in the sand blasting tank is prevented from moisture absorption and hardening; the standby control valve provides a standby power source for the micro-sand ejector; the micro-sand ejector takes the pressurized seawater or compressed air source as power through the negative pressure generated inside, and sucks micro-sand through a descending port of the flow controller; the sand-water mixture is uniformly distributed to a plurality of spraying groups by the flow divider, and each spraying group comprises a plurality of nozzles; the nozzles are in a spiral structure form with a ceramic lining structure, and the spraying ranges of the nozzles are mutually overlapped alternately, so that the micro-sand is ensured to be uniformly distributed on the water surface; the continuous backwashing filter is positioned at the inlet end of the micro-sand reflux pump and is used for intercepting part of larger impurity particles so as to avoid blocking the micro-sand ejector; the first micro-sand reflux pump and the second micro-sand reflux pump are in a parallel mode to realize a mutual standby state; the first water source control valve and the second water source control valve are respectively positioned at the outlet ends of the first micro-sand reflux pump and the second micro-sand reflux pump and are respectively used for regulating the water source flow and the pressure regulation process of the micro-sand ejector and the sediment separator according to the logic program of the control system; the backflow control valve reflows part of the water source to the inlet end of the micro-sand backflow pump and is used for assisting the water source control valve to adjust the flow and pressure process of the water source; the silt separator is positioned at the inlet end of the micro-sand reflux device, and the slime wrapped on the outer surface of the micro-sand is separated by arranging the reciprocating disturbance isolation baffle; the micro-sand backflow device utilizes tangential water flow to float on slime through the sludge conveying pipeline to the sludge concentration tank under the action of centrifugal force, and micro-sand sinks to return to the water tank again to continuously participate in flocculation and sedimentation processes in the water treatment process, so that the automatic circulation backflow comprehensive utilization of the micro-sand is realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a little sand automatic cycle reflux unit of seawater pretreatment, including storing up sand jar (2), sand blasting jar (3), shunt (16), little sand sprayer (5), sand blasting jar (2) sets up the upper end of sand blasting jar (3), sand blasting jar (2) with be the connection structure as an organic whole between sand blasting jar (3), be connected with in one side of sand blasting jar (2) and be used for carminative row air control valve (26), oscillator (4) are installed to the lower extreme of sand blasting jar (3), the last little sand charge door (13) of having seted up of sand blasting jar (2), be provided with between sand blasting jar (2) and sand blasting jar (3) and cut off and little sand feed valve (14), little sand sprayer (5) are connected the lower extreme of sand blasting jar (3), little sand sprayer (5) with through pipeline interconnect between shunt (16), the pipeline is provided with a flow sampler (15), one side of the sand storage tank (2) is provided with a water absorber (7), the sand storage tank (2) and the water absorber (7) are connected with each other through the pipeline, and the pipeline is provided with an air source throttle valve (8) and a standby control valve (12).
2. The automatic circulating and refluxing device for seawater pretreatment micro-sand, according to claim 1, is characterized in that: one side of micro-sand ejector (5) is provided with a first micro-sand circulating pump, micro-sand ejector (5) is connected with the first micro-sand circulating pump through a pipeline, and a first water source control valve (24) is installed on the pipeline.
3. The automatic circulating and refluxing device for seawater pretreatment micro-sand, according to claim 2, is characterized in that: the lower end of the first micro-sand circulating pump is provided with a second micro-sand circulating pump, the first micro-sand circulating pump and the second micro-sand circulating pump are connected with each other through a pipeline, and a continuous backwashing filter (19) is installed on the pipeline.
4. The automatic circulating and refluxing device for seawater pretreatment micro-sand, according to claim 1, is characterized in that: one side of shunt (16) is provided with fine sand return circuit (18), is provided with fine sand counter (27) at the lower extreme of fine sand return circuit (18), through pipeline interconnect between the output of second fine sand circulating pump and fine sand return circuit (18), install silt separator (23) and second water source control valve (25) on this pipeline.
5. The automatic circulating and refluxing device for seawater pretreatment micro-sand, according to claim 1, is characterized in that: the inside of the sand storage tank (2) is provided with a micro-sand filter screen for filtering larger particles or irregular micro-sand particles.
6. The automatic circulating and refluxing device for seawater pretreatment micro-sand, according to claim 1, is characterized in that: and a flow controller (11) is installed at the lower end of the sand blasting tank (3).
7. The automatic circulating and refluxing device for seawater pretreatment micro-sand, according to claim 1, is characterized in that: and a spiral stirrer (10) is arranged on one side of the lower end of the sand blasting tank (3).
8. The automatic circulating and refluxing device for seawater pretreatment micro-sand, according to claim 1, is characterized in that: the upper end of the sand storage tank (2) is provided with a control system (1), the control system (1) is respectively in controllable connection with the oscillator (4), the air source control valve (6), the air source throttle valve (8), the liquid level controller (9), the spiral stirrer (10), the flow controller (11), the standby control valve (12), the micro-sand feeding valve (14), the flow sampler (15), the continuous backwashing filter (19), the first micro-sand circulating pump, the second micro-sand circulating pump, the first water source control valve (24), the second water source control valve (25), the exhaust control valve (26) and the micro-sand meter (27), and independent control or interlocking control process is realized according to the control system (1).
9. The automatic circulating and refluxing device for seawater pretreatment micro-sand, according to claim 1, is characterized in that: a plurality of nozzles (17) are installed on the flow divider (16), the nozzles (17) are of a spiral structure with a ceramic lining structure, and the spraying ranges of the nozzles (17) are alternately overlapped with each other to ensure that the micro-sand is uniformly distributed on the water surface.
10. A conveying method of an automatic circulating reflux device for seawater pretreatment micro-sand is characterized by comprising the following steps: firstly, adding a micro-sand material into a sand storage tank (2), starting a control system (1), and realizing an independent control or interlocking control process according to the control system (1); the micro-sand feeding port (13) is positioned above the sand storage tank (2) and the sand blasting tank (3) and is used for feeding micro-sand, the sand storage tank (2) and the sand blasting tank (3) are of tank structures made of the same material, a partition and a micro-sand feeding valve (14) are arranged between the sand storage tank and the sand blasting tank, a micro-sand filter screen is arranged inside the sand storage tank (2) and is used for filtering large particles or irregular micro-sand particles to ensure natural suction of a micro-sand ejector (5), the sand storage tank (2) is used for temporarily storing micro-sand to prolong the micro-sand feeding period, and the micro-sand feeding valve (14) is used for controlling the micro-sand feeding amount in the sand blasting tank (3) and ensuring the tightness of the sand blasting tank (3); the liquid level controller (9), the oscillator (4), the air source throttling valve (8) and the exhaust control valve (26) are respectively positioned on the side wall of the sand blasting tank (3) and fixedly connected, the sand blasting tank (3) is of a pressure-bearing tank body structure, and the opening degree of the air source throttling valve (8) is adjusted by the control system (1) in the micro-sand feeding process to maintain a positive pressure state for providing auxiliary power for the micro-sand ejector (5); the exhaust control valve (26) is connected with the outside of the sand blasting tank (3), the open state is used for exhausting the pressure in the tank body, the micro-sand feeding valve (14) is used for supplementing sand, and the close state is used for ensuring the tightness of the sand blasting tank (3); the liquid level controller (9) monitors the micro-sand storage amount in the sand blasting tank (3) and feeds back signals to the control system (1) to add micro-sand in due time; the oscillator (4) adopts an intermittent oscillation mode, so that unsmooth deposition and blanking of micro sand at the middle upper part are avoided; the spiral stirrer (10) adopts a rotary thrust screw rod form to loosen the micro sand at the lower part of the sand blasting tank (3), so that the micro flow control adjustment of the flow controller (11) is facilitated; the flow sampler (15) monitors the concentration content of the added micro-sand in real time and feeds back a data signal to the control system (1); the micro-sand meter (27) monitors the concentration content of the added micro-sand in real time and feeds back a data signal to the control system (1); the flow controller (11) automatically adjusts the micro-sand putting amount through the control system (1) according to data signals fed back by the flow sampler (15) and the micro-sand meter (27), and maintains the micro-sand content in the pool to be in a balanced state as a whole; the air source control valve (6) is a compressed air source control primary valve and is used for directly connecting or isolating an air source; the water absorber (7) adopts a filter of a water absorbing filter element and is used for filtering water and a small amount of impurities in a compressed air source to avoid moisture absorption and hardening of micro sand in the sand blasting tank (3); the standby control valve (12) provides a standby power source for the micro-sand ejector (5); the micro-sand ejector (5) takes the pressurized seawater or compressed air source as power through the negative pressure generated inside, and sucks the micro-sand through the descending port of the flow controller (11); the flow divider (16) uniformly distributes the sand-water mixture to a plurality of spraying groups, and each spraying group comprises a plurality of nozzles (17); the nozzles (17) are in a spiral structure form with a ceramic lining structure, and the spraying ranges of the nozzles (17) are alternately overlapped to ensure that the micro-sand is uniformly distributed on the water surface; the continuous back-flushing filter (19) is positioned at the inlet end of the micro-sand reflux pump and is used for intercepting part of larger impurity particles to avoid blocking the micro-sand ejector (5); the first micro-sand reflux pump and the second micro-sand reflux pump are in a parallel mode to realize a mutual standby state; a first water source control valve (24) and a second water source control valve (25) are respectively positioned at the outlet ends of the first micro-sand reflux pump and the second micro-sand reflux pump and are respectively used for adjusting the water source flow and the pressure adjusting process of the micro-sand ejector (5) and the sediment separator (23) according to the logic program of the control system (1); the backflow control valve (20) reflows part of the water source to the inlet end of the micro-sand backflow pump and is used for assisting the water source control valve to adjust the flow and pressure process of the water source; the silt separator (23) is positioned at the inlet end of the micro-sand reflux device (18), and the slime wrapped on the outer surface of the micro-sand is separated by arranging the reciprocating disturbance isolation baffle; the micro-sand backflow device (18) utilizes tangential water flow to float slime to a sludge concentration tank through a sludge conveying pipeline under the action of centrifugal force, and micro-sand sinks to return to the water tank again to continuously participate in flocculation and sedimentation processes in the water treatment process, so that automatic circulation backflow comprehensive utilization of the micro-sand is realized.
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| US20040144730A1 (en) * | 2001-03-15 | 2004-07-29 | Patrick Binot | Method and unit for the treatment of water by ballasted flocculation and gravity separation with variable function modes |
| CN101798147A (en) * | 2009-12-30 | 2010-08-11 | 中国第一重型机械股份公司 | Pretreatment system of sea water desalinization with hot method |
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