CN108553957B - Water treatment device with float-type water supply and drainage mechanism - Google Patents
Water treatment device with float-type water supply and drainage mechanism Download PDFInfo
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- CN108553957B CN108553957B CN201810247129.0A CN201810247129A CN108553957B CN 108553957 B CN108553957 B CN 108553957B CN 201810247129 A CN201810247129 A CN 201810247129A CN 108553957 B CN108553957 B CN 108553957B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/20—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container
- B01D24/24—Downward filtration, the container having distribution or collection headers or pervious conduits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/38—Feed or discharge devices
- B01D24/40—Feed or discharge devices for feeding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
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- 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
- B01D24/4869—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 by level measuring
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Abstract
A water treatment device with a float-type water supply and drainage mechanism comprises a filter tank, a filter material layer and a back flush pipeline, wherein a purified water outlet is arranged on the tank wall below the filter material layer, a water inlet and outlet pipe is vertically arranged in the filter tank, and the lower ends of the water inlet and outlet pipe are connected with a water supply pipeline to be filtered and a turbid water drainage pipeline outside the filter tank through pipelines; the upper end cover of inlet and outlet pipe is equipped with a flotation pontoon that can suspend in aqueous, and the flotation pontoon upper end is opened and is formed the inlet and outlet, and the flotation pontoon inside wall is connected with inlet and outlet pipe lateral wall sliding seal, makes the flotation pontoon can float along inlet and outlet pipe from top to bottom along the change of water level in the filter tank. The height of the water inlet and the water outlet is changed along with the change of the liquid level, and the water inlet and the water outlet are always adapted to the liquid level of the filter tank in the backwashing drainage process, so that the filter material is prevented from losing along with water, the backwashing efficiency is higher, the backwashing frequency can be reduced, the backwashing time is shortened, and the service efficiency of the filter tank is improved.
Description
Technical Field
The invention relates to a water treatment system, in particular to a water treatment device with a float-type water supply and drainage mechanism.
Background
In the water purification process, filter filtration is an important part. In the filtering process, the impurities filtered out from the water can be continuously intercepted and accumulated in the filter material layer, the excessive accumulation can not only cause the reduction of the filtering speed and the reduction of the water production efficiency, but also cause the unqualified water quality of the outlet water. It is therefore necessary to remove the impurities accumulated in the filter bed by backwashing. In the back washing process, water or air flow reversely impacts the filter material layer to loosen impurities deposited in the filter material layer, and the impurities are stripped and separated from the filter material and suspended in water and then discharged along with the water to achieve the purpose of cleaning. Because in the back flush process, not only can wash out impurity from the filter material bed water, some filter materials also can suspend in aqueous under the impact, if the back flush drainage mode is improper, can lead to the filter material to discharge along with water to cause the filter material loss.
At present, backwashing water outlets of most of filter tanks (siphon filter tanks, V-shaped filter tanks, D-shaped filter tanks, F-shaped filter tanks and the like) are fixedly installed, and the backwashing effect and the water discharging effect have the following problems.
Firstly, if the mounted position is too high, the muddy water that stays in the filter tank behind the back flush drainage is many, then the number of times of back flush needs corresponding increase, if the mounted position is low excessively, the filter material of aquatic suspension is too close to the drainage mouth, and the filter material loss will increase among the drainage process.
Secondly, because the liquid level in the filter chamber is constantly changed in the drainage process, when drainage is started, the liquid level is higher than the drainage outlet, water and impurities can be drained from the drainage outlet, and when the liquid level is lower than the drainage outlet, drainage is stopped. The liquid level height during initial drainage determines the time of continuous drainage, and if the liquid level is too high in the initial stage, the filter material suspended in water is easily discharged together with impurities, so that the loss of the filter material is increased. If the liquid level is too low in the initial stage, the drainage time is too short, impurities are difficult to be fully discharged, the effluent quality cannot reach the standard, the washing frequency and time are increased, and the purposes of saving energy and water cannot be achieved.
Thirdly, in order to reduce the loss of the filter material during backwashing and water discharging, the flow rate of water during water discharging is generally not too large, the power of impurities on the water surface is insufficient, the discharging speed is slow, and the impurities are difficult to be completely discharged. In order to increase the power of impurities on the liquid surface during drainage, a mode of arranging an air blowing pipe above the liquid surface of the filter tank is adopted in some cases to blow air horizontally on the liquid surface so as to push the impurities to move to a drainage outlet and promote the impurities to be smoothly discharged. However, due to factors such as the diffusion of the air flow and the resistance of the air, the intensity of the air flow blown out by the air blowing pipe is rapidly weakened along with the increase of the distance, and the pushing effect on impurities at a far position is small. Moreover, part of the impurities are positioned below the liquid level, and the pushing effect of the airflow above the liquid level is limited. Therefore, the water surface blowing mode is only effective for impurities which are close to the blowing pipe and are positioned on the surface layer of the water surface.
Disclosure of Invention
The invention aims to solve the technical problems that the height of a water outlet of the existing filter tank is fixed, the filter tank cannot adapt to the liquid level change of the filter tank, and the loss of filter materials is large during water drainage, and provides a water treatment device with a float-type drainage mechanism.
The technical scheme adopted by the invention for solving the technical problems is as follows: a water treatment device with a float-type drainage mechanism comprises a filter tank, a filter material layer arranged in the filter tank and a backwashing pipeline arranged below the filter material layer, wherein a purified water outlet is arranged on the tank wall below the filter material layer, a water inlet and outlet pipe is vertically arranged in the filter tank, and the lower ends of the water inlet and outlet pipe are connected with a water supply pipeline to be filtered and a backwashing drainage pipeline outside the filter tank through pipelines; the upper end cover of inlet and outlet pipe is equipped with a flotation pontoon that can suspend in aqueous, and the upper end of flotation pontoon is opened and is formed the inlet and outlet, and the lateral wall sliding seal of inside wall and inlet and outlet pipe of flotation pontoon is connected, makes the flotation pontoon can float from top to bottom along the inlet and outlet pipe along the change of water level in the filter tank to change the height of flotation pontoon upper end inlet and outlet.
And a valve seat is arranged in the upper port of the water inlet and outlet pipe, and a valve core which can be driven by a driving mechanism to move up and down to control the opening and closing of the valve is arranged above the valve seat.
The backwashing pipeline is annularly arranged below the filter material layer.
The back-washing pipeline is connected with a back-washing air supply pipeline and a back-washing water supply pipeline outside the filter through corresponding valves.
And a circle of plug flow pipes surrounding the water inlet and outlet pipes are arranged above the filter material layer, the plug flow pipes are arranged below the water surface of the filter tank and are connected with an air supply or water supply pipeline outside the filter tank, and spray holes for upwards blowing air or spraying water to push water flow are distributed on the plug flow pipes.
The filter is circular, the water inlet and outlet pipes are arranged at the center of the filter, and the draft tube is arranged around the water inlet and outlet pipes in a circular ring shape.
The water inlet and outlet at the upper end of the float bowl are in outwards expanded horn shapes.
The floating body is fixed on the floating barrel and can float on the water surface.
The floating force of the floating pontoon floating in water enables the upper edge of the water inlet and outlet at the upper end of the floating pontoon to be 5-15 cm below the water surface.
The lower extreme of flotation pontoon is equipped with the stop device who is used for restricting its maximum lifting height.
The invention has the beneficial effects that: the float bowl sleeved on the upper end of the water inlet and outlet pipe can float in water and can float up and down along with the change of the water level in the filter tank, so that the height of the water inlet and outlet on the upper end of the float bowl is changed along with the change of the liquid level, and the float bowl is always adapted to the liquid level of the filter tank in the backwashing drainage process, thereby preventing the drainage from running off along with the water. The liquid level of the initial stage of the back flushing drainage of the filter tank can be raised to a higher height without worrying about the loss of the filter material, so the back flushing efficiency is higher, the back flushing frequency can be reduced, the back flushing time is shortened, and the service efficiency of the filter tank is improved.
The float bowl floating mode can automatically adapt to liquid level change, and a set height difference can be kept between the water inlet and the water outlet and the liquid level all the time. The automatic adaptation mode does not need a series of complicated operations such as liquid level measurement, control system calculation, driving mechanism action and the like, so that compared with the method of active control through the driving mechanism, delay is hardly generated between the height adjustment of the water inlet and the water outlet and the liquid level change, the precision is higher, a complex control system is not needed, and the simplicity and the stability are better.
On the basis of solving the technical problem, water sprayed by a flow pushing pipe arranged along the inner wall of the filter tank below the liquid level or air pushes the water in the filter tank to flow upwards, and the water diffuses towards the center of the filter tank on the upper layer of the filter tank in the upward flow process due to the blocking of the wall of the filter tank. And because the flow pushing pipe pushes water to flow upwards, the water pressure near the flow pushing pipe is reduced, and the water flow in the center of the filter tank is gathered towards the flow pushing pipe and then pushed upwards again. Therefore, circulating water flow consisting of ascending flow near the inner wall of the filter tank, converging flow from the upper layer of the filter tank to the center, descending flow from the center of the filter tank and diffused flow from the lower layer of the filter tank to the tank wall can be formed in the filter tank. Under the action of circulating water, the impurities on the upper layer of the liquid level have enough power to gather towards the center and are discharged through a water outlet pipe at the center of the filter tank.
The flow pushing pipe is submerged underwater, the sprayed water or air flow can be completely converted into water flow power, and compared with a water surface blowing mode, the problem that the air flow cannot be used for pushing the water flow after being diffused does not exist, so that the water flow pushing efficiency is higher, and the discharge of water surface impurities can be effectively promoted.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic diagram showing the position distribution of the components in the filter.
FIG. 3 is a schematic view of the circulation of water under the action of a plug flow tube.
FIG. 4 is a schematic view of the position of the float when the filter is at a high level.
FIG. 5 is a schematic diagram of the position of the float after the liquid level of the filter tank drops.
FIG. 6 is a schematic diagram of one embodiment of a spar.
The labels in the figure are: 1. the filter comprises a filter chamber, 2, a water inlet and outlet pipe, 3, a buoy, 301, a water inlet and outlet port, 302, a floating body, 4, a push flow pipe, 401, spray holes, 5, a filter material layer, 501, a filter cap, 6, a valve seat, 7, a valve core, 8, a driving mechanism, 9, a clean water outlet, 10, a backwashing pipeline, 11, a water supply pipeline to be filtered, 12, a backwashing drainage pipeline, 13, a backwashing water supply pipeline, 14, a backwashing air supply pipeline, 15 and a liquid level meter.
Detailed Description
The technical scheme of the invention is clearly and completely described below with reference to the accompanying drawings and the detailed description. The specific contents listed in the following examples are not limited to the technical features necessary for solving the technical problems to be solved by the technical solutions described in the claims. Meanwhile, the list is that the embodiment is only a part of the present invention, and not all embodiments.
As shown in figure 1, the water treatment device of the invention comprises a filter tank 1, a filter material layer 5 arranged in the filter tank 1 and a back flush pipeline 10 arranged below the filter material layer 5, wherein a purified water outlet 9 is arranged on the tank wall below the filter material layer 5. An inlet and outlet water pipe 2 is vertically arranged in the filter chamber, and the inlet and outlet water pipe 2 is used for water to be filtered to enter the filter chamber and is also used as a drain pipe in the back flushing process for back flushing water to flow out of the filter chamber. The water inlet and outlet pipe 2 is preferably arranged at the center of the filter 1, so that impurities on the liquid surface can be conveniently gathered and discharged to the center during backwashing drainage. Of course, it is also possible to locate the water inlet and outlet pipes at off-centre positions, for example on one side of the filter. Accordingly, impurities on the liquid surface need to be gathered and discharged to one side of the filter.
The lower end of the water inlet and outlet pipe 2 is connected with a water supply pipeline 11 to be filtered and a backflushing drainage pipeline 12 outside the filter tank through pipelines. When the filter chamber filters water normally, the valve of the water discharge pipeline is closed, and water to be filtered is introduced into the filter chamber through the water inlet and outlet pipe 2 by the water supply pipeline. In the process of backwashing the filter tank, the water supply pipeline is closed, and the water at the impurity communicating part on the liquid level of the filter tank is communicated with the water drainage pipeline through the water inlet and outlet pipe 2 and is discharged.
A valve seat 6 is arranged in the upper port of the water inlet and outlet pipe 2, and a valve core 7 capable of moving up and down is arranged above the valve seat 6. The valve seat 6 and the valve core 7 form a valve for controlling the water inlet and outlet pipe 2 to be opened or closed. The specific forms of the valve seat 6 and the valve core 7 can be selected according to requirements, the embodiment selects the form of a conical valve, and the valve seat 6 and the valve core 7 are provided with conical sealing surfaces which are in sealing fit with each other. The valve element 7 is shown moved up and down by a drive mechanism 8, for example by a push rod motor, to control the opening and closing of the valve. According to the specific valve form, a sling, a screw rod and the like can be adopted to drive the valve to move up and down.
In order to solve the problem that a backwashing water outlet adapts to the liquid level change of a filter tank, the upper end of a water inlet and outlet pipe 2 is sleeved with a floating barrel 3 capable of being suspended in water, and the upper end of the floating barrel 3 is opened to form a water inlet and outlet 301. The inner side wall of the pontoon 3 and the outer side wall of the water inlet/outlet pipe 2 are directly slidable and sealed. Therefore, the water inlet and outlet pipe 2 sleeved with the buoy 3 forms a telescopic form at the upper end. The sliding friction between the buoy 3 and the water inlet and outlet pipe 2 should not prevent the buoy 3 from rising under the buoyancy of water, and also should not prevent the buoy from falling under the gravity after the liquid level falls. Therefore, the float 3 is actually suspended in the water and can float up and down along the water inlet and outlet pipe 2 according to the change of the water level in the filter 1. As the buoy 3 floats up and down, the height of the water inlet and outlet 301 at the upper end of the buoy also changes up and down correspondingly, and the change is always adapted to the change of the liquid level.
As shown in figure 4, when the water level in the filter tank rises, the buoy 3 rises to a higher position along the water inlet and outlet pipe 2 under the buoyancy of the water. And as the water is discharged, as shown in fig. 5, when the water level in the filter tank drops, the buoy 3 also correspondingly drops along the water inlet and outlet pipe 2. But the inlet and outlet 301 always maintains a relatively fixed position with respect to the water surface.
When the water treatment device provided with the invention works normally, the water supply pipeline 11 to be filtered is communicated with the water inlet and outlet pipe 2, and the valve core 7 is driven by the driving mechanism 8 to rise, so that the valve is opened. Water to be filtered enters the filter tank 1 from the water inlet and outlet 301, is filtered by the filter material layer 5 in the filter tank, and is discharged from the purified water outlet 9 on the tank wall below the filter material layer.
As the filtration proceeds, the amount of impurities deposited in the filter material layer 5 gradually increases. When the impurity is too much to obstruct the filtration and cause the liquid level to rise to the preset value or the discharged purified water is detected to have turbidity larger than the preset value, the filter material layer can be judged to need back washing. At this time, the water inlet with filtered water and the water outlet with purified water are stopped, and the driving mechanism 8 drives the valve core 7 to descend to shut off the water inlet and outlet pipe 2. The back flushing program is started, and back flushing air flushing and/or water flushing (as shown in figure 3) is carried out by using the back flushing pipeline 10 below the filter material layer. Along with the back flushing, the impurities are flushed out from the filter material layer, and the liquid level in the filter tank gradually rises. The buoy 3 also rises along with the water, so that the water inlet and outlet 301 always keeps a relatively fixed position with the water surface. And when the liquid level reaches a set high point, stopping back flushing air flushing and water flushing. The driving mechanism 8 drives the valve core 7 to ascend, opens the valve to enable turbid water to enter the water inlet and outlet pipe 2 through the water inlet and outlet 301, and is discharged through the backflushing drainage pipeline 12.
In the drainage process, the relative position of the water inlet/outlet 7 and the water surface is always fixed, and the relative position is accurately calculated through a backwashing experiment according to the thickness of a drainage turbid water layer and the buoyancy of the buoy, so that the upper edge of the water inlet/outlet 7 is always positioned at a proper height below the water surface. Therefore, the height difference between the liquid level and the upper edge of the water inlet and outlet 7 is not too large, and the loss of the filter material caused by the filter material entering the water inlet and outlet pipe 2 along with water flow can be prevented. Meanwhile, the height difference is not too small, so that impurities on the liquid level can be smoothly discharged along with water.
The floating pontoon floating mode can lead the water inlet and outlet 301 to automatically adapt to the change of liquid level, and the set height difference between the water inlet and outlet 301 and the liquid level can be always kept. The liquid level of the initial stage of the back flushing drainage of the filter can be raised to a higher height without worrying about the loss of filter materials caused by overlarge height difference between the liquid level and the water inlet and outlet 301 during drainage, so that the back flushing frequency can be reduced, the back flushing time can be shortened, and the service efficiency of the filter can be improved. The automatic adaptation mode does not need a series of complicated operations such as liquid level measurement, control system calculation, driving mechanism action and the like, so that compared with the method of active control through the driving mechanism, delay is hardly generated between the height adjustment of the water inlet and the water outlet and the liquid level change, the precision is higher, a complex control system is not needed, and the simplicity and the stability are better.
The water inlet and outlet 301 at the upper end of the float bowl 3 is flared and expanded, and the pipe orifice is enlarged after expansion, so that impurities on the liquid level can be collected and discharged.
The buoy 3 can be made of a material with larger buoyancy, so that the buoy can be suspended in water. The main body of the buoy 3 can also be made of a relatively strong but heavy metal, and the like, and a floating body 302 with a larger buoyancy and capable of floating on the water surface is fixed on the periphery of the main body. The buoyancy of the floating body 302 may be provided by the material itself, or may be achieved by a structure, such as a hollow structure, e.g., a hollow floating ball. The number of the floating bodies 302 and the specific installation manner are set as required. For example, directly to the outer wall of the tubular body or to a connecting strut extending outwardly from the tubular body. In the embodiment shown in fig. 6, four spherical floating bodies 302 are fixed in a manner of connecting support rods, and the four spherical floating bodies 302 are uniformly distributed along the circumferential direction of the buoy 3 to ensure that the buoyancy is uniform around the buoy 3.
The limiting device is arranged at the lower end of the buoy 3, so that the buoy 3 can be kept sleeved on the water inlet and outlet pipe 2 and cannot be separated due to overhigh rise, and meanwhile, the maximum lifting height of the buoy can be limited by the limiting device. The specific form of the limiting device can adopt a form that a convex block protruding inwards is arranged on the inner side of the lower end of the float 3, and the limiting device is matched with a blocking part fixed on the outer side of the upper end of the water inlet and outlet pipe 2 to play a limiting role. The limit can also be realized by arranging a guide groove and a slide block. The specific form can be selected according to specific needs. Similarly, a limiting device can be arranged at the upper end of the buoy 3 for limiting the maximum downward movement stroke, and the limiting device is arranged in a similar manner as the limiting device at the lower end.
In the backwashing drainage stage, the water inlet and outlet 301 needs to be below the water level in the filter tank, so that impurities on the liquid level can be smoothly discharged. The specific floating height of the water inlet and outlet 301 is determined by the buoyancy of the buoy 3 in water, and the buoyancy of the buoy 3 can be adjusted by selecting the type, size, quantity and the like of the buoyancy material. By researching the motion rule of the filter material in water, the thickness of a water surface impurity layer and the like in the back flushing process, the upper edge of the water inlet and outlet 301 at the upper end of the floating barrel 3 is determined to be located 5-15 cm below the water surface through calculation, and the optimal value is 10 cm. The water inlet and outlet 301 can be always kept at the position below the liquid level in the backwashing water discharging process, so that impurities can be fully discharged, the filter material is prevented from flowing into the water inlet and outlet pipe 2 along with water to the maximum extent, and the loss of the filter material is reduced.
As shown in figures 2 and 3, a circle of plug flow pipes 4 are arranged along the inner wall of the filter chamber 1, and the plug flow pipes 4 surround the water inlet and outlet pipes 2. The height of the plug flow pipe 4 is set to make it under the water surface of the filter chamber in the whole back flushing drainage process and above the filter material layer 5 in the filter chamber. The plug flow pipe 4 is connected with an air supply or water supply pipeline outside the filter 1, and spray holes 401 for blowing air or spraying water upwards are distributed on the plug flow pipe 4. During the back washing process, air or water input from the outside is sprayed into the filter tank through the spray holes 401, so that the water in the filter tank is pushed to flow. The upward blowing is generally upward, and may be vertically upward perpendicular to the horizontal plane or slightly inclined. Under the blowing action of the plug flow pipe 4, water nearby the plug flow pipe flows upwards along the wall of the filter tank, and an ascending flow is formed nearby the inner wall of the filter tank. Due to the blocking effect of the tank wall, the water flow can only diffuse to the center of the filter tank in the rising process, and therefore, a water flow layer which is converged to the center of the filter tank can be formed on the liquid level. The impurities on the liquid surface are gathered at the water inlet and outlet 301 under the driving of the converging flow of the upper layer of the liquid surface, and are discharged through the water inlet and outlet pipe 2. Along with the upward pushing of the water flow near the wall of the filter tank by the pushing pipe 4, the lower layer water flow in the center of the filter tank is diffused to the wall of the filter tank to fill the gap after the water flow rises, and the upper layer water flow in the center of the filter tank correspondingly sinks. Thus, a circulating water flow consisting of an upward flow near the inner wall of the filter, a converging flow of the upper flow of the filter toward the center, a downward flow of the center, and a diffusing flow of the lower layer of the filter toward the wall, as shown by the arrows above the plug flow pipes 4 in FIG. 3, is formed in the filter. The gas or the water that push away the continuous blowout of flow tube 4 provide power for rivers circulation, because push away flow tube 4 and submerge under water, spun water or air current can all be changed into rivers power, compare with the mode that the surface of water was blown, can not be used for promoting the problem of rivers after not having the air current diffusion, consequently the efficiency that promotes rivers is higher, can effectively promote the discharge of surface of water impurity.
Based on the idea of promoting the impurities on the upper layer of the liquid level to collect and flow to the center of the filter tank by utilizing the circulating water flow, the shape of the filter tank 1 is designed to be circular, and the annular plug flow pipes 4 are arranged along the wall of the filter tank, so that the distances between the water inlet and outlet pipes 2 in the center of the filter tank and the surrounding tank wall and the plug flow pipes 4 are equal. The strength of a plurality of circulating water flows which are formed under the blowing action of a plurality of spray holes 401 which are uniformly distributed on the plug flow pipe 4 and are distributed along the circumference of the inner wall of the filter tank is basically the same, so that the stability of each part of the circulating water flow of the whole filter tank can be kept, unnecessary energy loss is avoided, and the high-efficiency work of the plug flow pipe 4 is ensured.
The direction of the spray holes of the thrust pipe 4 can be directly and vertically upward, and water circulation is formed by the blocking effect of the filter tank wall. The direction of the jet holes 401 may be inclined slightly toward the center of the filter and inclined obliquely upward from the center of the filter, so that the flow circulation can be promoted by the inclined jet air flow or water flow.
In view of the circular shape of the filter, the backwash pipes 10 may also be arranged in a ring shape below the filter bed 5, so that the backwash air flow or water flow is adapted to the circular filter bed.
In the embodiment shown in the figure 1, the backwashing pipeline 10 is respectively connected with a backwashing air supply pipeline 14 and a backwashing water supply pipeline 13 outside the filter tank through corresponding valves. According to the set back washing program, the valve of the back washing air supply pipeline 14 can be started firstly, and the air flow sprayed upwards through the back washing pipeline 10 impacts the filter material layer for a certain time. Then, the valve of the backwash water supply line 13 is opened, and after air-washing and water-washing are performed for a certain period of time, the valve of the backwash water supply line 14 is closed, and water-washing is performed separately. After the air flushing and the water flushing are finished, the turbid water on the upper layer of the liquid surface is discharged.
The embodiment shown in fig. 1 also connects the drift tube 4 to the backwash air supply line 14 through corresponding pipes and valves, and the backwash air supply line 14 provides an air source for circulating the water flow. If the flow pushing pipe 4 needs to spray water to push the water flow to circulate, the water flow can be connected with the back washing water supply pipeline 13.
The above description of the specific embodiments is only for the purpose of helping understanding the technical idea of the present invention and the core idea thereof, and although the technical solution is described and illustrated herein using the specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made therein by those skilled in the art without departing from the technical spirit of the present invention. Such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a water treatment facilities with float formula water supply and drainage mechanism, includes filtering pond (1), sets up filter material layer (5) in filtering pond (1) and sets up back flush pipeline (10) below filter material layer (5), is equipped with water purification export (9) on the pool wall of filter material layer (5) below, its characterized in that: a water inlet and outlet pipe (2) is vertically arranged in the filter tank, and the lower end of the water inlet and outlet pipe (2) is connected with a water supply pipeline (11) to be filtered and water outside the filter tank and a backflushing drainage pipeline (12) through a pipeline; the upper end of the water inlet and outlet pipe (2) is sleeved with a floating barrel (3) capable of being suspended in water, the upper end of the floating barrel (3) is opened to form a water inlet and outlet (301), the inner side wall of the floating barrel (3) is connected with the outer side wall of the water inlet and outlet pipe (2) in a sliding and sealing mode, so that the floating barrel (3) can float up and down along the water inlet and outlet pipe along the change of the water level in the filter tank, and the height of the water inlet and outlet (301) at the; a circle of flow pushing pipe (4) surrounding the water inlet and outlet pipe (2) is arranged above the filter material layer (5) along the inner wall of the filter tank (1), the flow pushing pipe (4) is arranged below the water surface of the filter tank and is connected with an air supply or water supply pipeline outside the filter tank, and spray holes (401) for upwards blowing air or spraying water to push water flow are distributed on the flow pushing pipe (4).
2. A water treatment apparatus having a float type water supply and drainage mechanism as claimed in claim 1, wherein: and a valve seat (6) is arranged in the upper port of the water inlet and outlet pipe (2), and a valve core (7) which can be driven by a driving mechanism (8) to move up and down to control the opening and closing of the valve is arranged above the valve seat (6).
3. A water treatment apparatus having a float type water supply and drainage mechanism as claimed in claim 1, wherein: the backwashing pipeline (10) is annularly arranged below the filter material layer (5).
4. A water treatment apparatus having a float-type water supply and drainage mechanism as claimed in claim 1 or 3, wherein: the back-washing pipeline (10) is connected with a back-washing air supply pipeline (14) and a back-washing water supply pipeline (13) outside the filter through corresponding valves.
5. A water treatment apparatus having a float type water supply and drainage mechanism as claimed in claim 1, wherein: the filter (1) is circular, the water inlet and outlet pipes (2) are arranged at the center of the filter, and the draft tube (4) is arranged around the water inlet and outlet pipes (2) in a circular ring shape.
6. A water treatment apparatus having a float type water supply and drainage mechanism as claimed in claim 1, wherein: the water inlet and outlet (301) at the upper end of the float bowl (3) is in an outwards expanded horn shape.
7. A water treatment apparatus having a float type water supply and drainage mechanism as claimed in claim 1, wherein: a floating body (302) capable of floating on the water surface is fixed on the floating barrel (3).
8. A water treatment apparatus having a float type water supply and drainage mechanism as claimed in claim 1, wherein: the floating force of the floating pontoon (3) floating in water enables the upper edge of the water inlet/outlet (301) at the upper end of the floating pontoon (3) to be 5-15 cm below the water surface.
9. A water treatment apparatus having a float type water supply and drainage mechanism as claimed in claim 1, wherein: the lower end of the float bowl (3) is provided with a limiting device for limiting the maximum lifting height of the float bowl.
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| JP3652980B2 (en) * | 2000-11-15 | 2005-05-25 | 武彦 高山 | UV oxidation sterilization purification equipment |
| CN201220133Y (en) * | 2008-06-26 | 2009-04-15 | 上海梅山钢铁股份有限公司 | External-pressure hollow type full-automatic filter |
| CN203108272U (en) * | 2012-12-28 | 2013-08-07 | 赫菲斯热处理系统江苏有限公司 | Floating oil suction device for oil-water separator |
| CN203342474U (en) * | 2013-05-20 | 2013-12-18 | 江苏恒博环境工程设备有限公司 | Back-washing device |
| CN103520966B (en) * | 2013-09-27 | 2016-05-04 | 新龙鼎控股集团有限公司 | Automatic rotary streaming filter |
| CN103845930B (en) * | 2014-02-17 | 2015-11-25 | 中持水务股份有限公司 | A kind of filtrate retains high strength backwash rhone |
| CN206121252U (en) * | 2016-08-31 | 2017-04-26 | 秦皇岛莱特流体设备制造有限公司 | Automatic wash micro -vortex high rate filter |
| CN206762351U (en) * | 2017-05-03 | 2017-12-19 | 安徽得奇环保科技股份有限公司 | The efficient back washing device of sandfiltration pot |
| CN106914043A (en) * | 2017-05-09 | 2017-07-04 | 江苏海事职业技术学院 | Flap valve filter tank automatic control system and its control method based on PAC |
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