CN208711136U - Filter - Google Patents

Abstract

The utility model discloses a kind of filter, including filter vat and support orifice plate, filter vat has water inlet and discharge outlet, support orifice plate is arranged at intervals on the top of the bottom of filter vat, discharge outlet is located at the lower section of support orifice plate, water inlet is located at the top of support orifice plate, supporting layer group is set gradually on support orifice plate, third filter layer, second filter layer and the first filter layer, wherein, the partial size of the filter medium of first filter layer is greater than the partial size of the filter medium of the second filter layer, the partial size of the filter medium of second filter layer is greater than the partial size of the filter medium of third filter layer, the partial size of the filter medium of supporting layer group from top to bottom successively becomes larger.The filter filter effect is good, long service life.

Description

Filter

Technical field

The utility model relates to water treatment field more particularly to a kind of filters.

Background technique

Water resource is one of the resource to human survival most critical.And now ecological environment goes to pot, water pollution increasingly Seriously, to realize sustainable development, water treatment technology is particularly important.

Filter is common filter plant in water treatment technology, and filter generally includes filter vat, filter layer and branch Support orifice plate, wherein filter layer and support orifice plate are arranged in filter vat, and the lower surface of filter layer is arranged in support orifice plate, are used In support filter layer.Existing filter, the hole of filter layer usually successively become smaller, and the filter of such structure is in filtering In the process, the lesser impurity in sewage is easy to happen the hole for blocking support orifice plate of uniting, and can make by prolonged use The water amount of orifice plate must be supported to reduce and shorten the service life of filter.

Utility model content

The purpose of this utility model is that: a kind of filter is provided, energy filter effect is good, long service life.

To reach this purpose, the utility model uses following technical scheme:

A kind of filter is provided, including filter vat and support orifice plate, the filter vat have water inlet and discharge outlet, institute The top that support orifice plate is arranged at intervals on the bottom of the filter vat is stated, the discharge outlet is located at the lower section of the support orifice plate, The water inlet is located at the top of the support orifice plate, and supporting layer group, third filter layer, the are set gradually on the support orifice plate Two filter layers and the first filter layer, wherein the partial size of the filter medium of first filter layer is greater than second filter layer The partial size of filter medium, the partial size of the filter medium of second filter layer are greater than the grain of the filter medium of the third filter layer The partial size of diameter, the filter medium of the supporting layer group from top to bottom successively becomes larger.

As a preferred technical solution of the filter, stating supporting layer group includes the first support set gradually Layering, the layering of the second support, the layering of third support and the layering of the 4th support, first support are layered close to second mistake Filtering layer setting.

As a preferred technical solution of the filter, the first support layering, second support point The partial size for the filter medium that layer, third support layering and the 4th support are layered successively becomes larger.

As a preferred technical solution of the filter, the partial size of the filter medium of the first support layering For 0.2-0.5mm；

And/or the partial size of the filter medium of the second support layering is 0.5-1.0mm；

And/or the partial size of the filter medium of the third support layering is 1.0-2.0mm；

And/or the 4th support layering filter medium partial size be 2.0-4.0mm；

And/or the 5th support layering filter medium partial size be 4.0-8.0mm.

As a preferred technical solution of the filter, the first support layering, second support point The thickness of layer, third support layering and the 4th support layering is equal.

As a preferred technical solution of the filter, first filter layer is anthracite filter layer；

And/or second filter layer be quartz sand filtration layer；

And/or third filter layer is magnetic iron ore filter layer；

And/or the filter medium of the supporting layer group is magnetic iron ore.

As a preferred technical solution of the filter, the top of the filter vat is arranged in the water inlet The side wall of the filter vat is arranged in portion, the discharge outlet.

As a preferred technical solution of the filter, the water inlet and the first filter layer interval are arranged, Gap between the water inlet and first filter layer forms water space.

As a preferred technical solution of the filter, the discharge outlet is connected with clear water discharge pipe, described The outside of the filter vat is arranged in clear water discharge pipe.

As a preferred technical solution of the filter, clear water disk is provided with outside the filter vat, it is described clear Water pond is connected to the discharge outlet.

The utility model has the following beneficial effects: the partial size due to filter medium is bigger, the hole of filter layer is bigger, at this It is obstructed first with the biggish impurity colloid of the biggish first filter layer filtration volume of hole in the first filtering in utility model On layer.After the impurity of small volume passes through the first filter layer, lesser second filter layer of the hole impurity slightly smaller to volume is utilized It is obstructed, promotes filter effect, and reduce a possibility that filter layer is blocked.The setting of supporting layer group, is mainly used for pair First filter layer, the second filter layer and third filter layer are supported effect, the partial size of the filter medium of supporting layer group by up to Under successively become larger, filtrate in supporting layer group can be prevented by supporting orifice plate to flow away, to be protected to supporting layer group by water flow, Filtrate is also avoided to enter the bottom of filter vat simultaneously.

Detailed description of the invention

The utility model is described in further detail below according to drawings and examples.

Fig. 1 be status diagram when water treatment system described in embodiment handles sewage.

Fig. 2 is water treatment system described in embodiment to status diagram when backwashing.

Fig. 3 is the top view of water treatment system described in embodiment.

Fig. 4 is the mounting structure signal of aeration board described in embodiment and the aeration bucket and the water butt.

In figure:

1, aerator；11, it is aerated bucket；12, aeration board；13, limbers；14, baffle；15, connecting tube；16, the first pipe Road；17, second pipe；

2, sewage water inlet pipe；21, water butt；

3, medicine storing drum；31, drug liquid tube；32, medical fluid valve；33, medical fluid pipe fitting；

4, filter；41, filter vat；42, discharge outlet；43, the first filter layer；44, the second filter layer；45, third filters Layer；46, the first support is layered；47, the second support is layered；48, third support is layered；49, the 4th support is layered；

5, bilge discharge pipe；

6, backwash tube is forced；61, switch valve；

7, clear water discharge pipe；71, clear water disk；

8, back purge system；81, the first backwash tube；82, the second backwash tube；83, siphon destructing tube；84, exhaust tube； 85, the first suction branch；86, the second suction branch；

9, sump.

Specific embodiment

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

As shown in figures 1-4, wherein Fig. 1 is the status diagram when water treatment system handles sewage, figure In arrow be water flow direction head；Fig. 2 be the water treatment system to backwash when status diagram, the arrow in figure is The direction head of water flow.In this present embodiment, this water treatment system includes sewage water inlet pipe 2, aerator 1 and filter 4: its In, sewage water inlet pipe 2 includes aeration bucket 11 and communicating pipe for being passed through sewage, aerator 1, and the top of the aeration bucket 11 is set Aeration board 12 is set, the aeration board 12 is provided with several for increasing the limbers 13 of the air in sewage.The aeration bucket 11 It is connected to the sewage water inlet pipe 2, the sewage can from top to bottom wash away the aeration board 12, and the bottom of the aeration bucket 11 connects Lead to the communicating pipe.Water inlet and discharge outlet 42 are offered on the filter 4.The water inlet is arranged in the discharge outlet 42 Top, the water inlet and the communicating pipe one end of the bottom far from the aeration bucket 11 connect, and the water inlet Bottom of the position lower than the aeration bucket 11.

By the way that several limbers 13 are arranged on aeration board 12, and sewage can from top to bottom wash away the aeration board 12 and go forward side by side Enter into aeration bucket 11, sewage comes into full contact with air during this.Specifically, sewage is divided in the limbers 13 on aeration board 12 It is dropped in aeration bucket 11 at the tiny water flow of multiply or thin water curtain, thin water flow or thin water curtain drop to during being aerated bucket 11 Come into full contact with air so that the oxygen in air in sewage ammonia nitrogen or aerobic microbiological contact.Sewage drops to exposure When gas bucket 11, the micro-bubble of high degree of dispersion is formed in aeration bucket 11, micro-bubble is adhered in sewage in aeration bucket 11 Impurity or micro-bubble package sewage in impurity form the first impurity bubble, the first impurity bubble enters communicating pipe with water flow Interior, the first impurity bubble within communicating pipe mutually unite and form the second impurity bubble by collision, wherein the weight of the second impurity bubble Weight and volume with volume than the first impurity bubble is big, and not needing to launch coagulant in water treatment system also can be by miscellaneous the One impurity bubble unites to form volume and weight biggish second impurity bubble, by filter 4 by contaminant filter.Due to being aerated bucket 11 Bottom be connected to communicating pipe, water inlet and communicating pipe one end of the bottom far from aeration bucket 11 connect, the second impurity bubble is in water It enters in filter 4 under stream effect along the water (flow) direction in communicating pipe, is steeped the second impurity in sewage using filter 4 Stopped, the second impurity bubble is blocked at the filter layer of water inlet, and residual impurity then passes sequentially through filter 4 Filter layer is filtered, and free from foreign meter or impure less clear water finally is discharged from discharge outlet 42.It is designed by this, so that dirty Most of impurity in water, which is formed the second impurity bubble, to be stopped at the filter layer of water inlet, and only a small amount of impurity passes through Filter layer filtering, effectively improves filter effect.In order to make aeration board 12 uniformly across sewage, the limbers 13 is uniformly It is distributed on aeration bucket 11.It should be noted that, impurity described in the present embodiment refers to suspended matter, particle, micro- life in sewage Object etc..

The maximum difference of water treatment system described in the utility model and traditional water treatment system is that this is practical new The water treatment system of type is entered back into aeration bucket 11 after first coming into full contact with sewage and air.Sewage is from aeration board 12 When entering aeration bucket 11, a large amount of micro-bubble can be generated in the inside of aeration bucket 11, it is small in bucket 11 using being aerated The surface of impurity in bubble adhesion sewage or micro-bubble wrap up the impurity in sewage, and form the first impurity bubble, and first Impurity bubble entered in communicating pipe mutually collide after form the biggish second impurity bubble of volume and weight, then filtered by filter 4 Free from foreign meter or impure less clear water is obtained, filter effect is greatly improved.

The communicating pipe includes first pipe 16 and second pipe 17, one end of the first pipe 16 and the aeration bucket 11 bottom connection, the other end are connected to the lower end of second pipe 17.The upper end of the second pipe 17 is connected to the water inlet, institute The flow direction for stating the sewage in first pipe 16 is from top to bottom that the flow direction of the sewage in the second pipe 17 is served as reasons Under it is supreme.Internal diameter, the internal diameter of the first pipe 16 and the internal diameter of the second pipe 17 of the aeration bucket 11 successively become smaller. The internal diameter that aeration bucket 11 is arranged is greater than the internal diameter of first pipe 16, after involvement has the sewage of air to enter first pipe 16, the The quantity of the first impurity bubble in the unit space of one pipeline 16 increases, so that the micro-bubble pair in the sewage of first pipe 16 First impurity bubble is mutually collided, the probability that mutually collides of the first contaminating air bubbles of increase, and unite to be formed it is finally miscellaneous by first Matter bubble becomes the second impurity bubble.The buoyancy of second impurity bubble is greater than the sum of gravity and downward resistance, so that the second impurity steeps By upward resultant force, so that the second impurity bubble floats.Faster water flow brings the second impurity bubble into first pipe 16 Into second pipe 17, since the internal diameter of the second pipe 17 is less than the internal diameter for stating first pipe 16, the list of second pipe 17 The quantity of the second impurity bubble in bit space increases, and the flow direction of the sewage in second pipe 17 is from the bottom to top second The micro-bubble in sewage in pipeline 17 collides the second impurity bubble during floating, and make micro-bubble with Second impurity bubble unites to form the biggish impurity colloid of volume and weight.And in the process, the dirt in second pipe 17 Micro-bubble in water can also be united with the first impurity bubble that do not unite in sewage during floating and form second Impurity bubble, increases the quantity of the second impurity bubble.Under flow action, impurity colloid enters in filter 4 with sewage, impurity glue Body is blocked at the filter layer of water inlet, and the filter layer that residual impurity then passes sequentially through filter 4 is filtered, most Free from foreign meter or impure less clear water is discharged from discharge outlet 42 eventually.It is designed by this, so that most of impurity in sewage It is formed impurity colloid to be blocked at the filter layer of water inlet, only a small amount of impurity is filtered by filter layer, effectively Ground improves filter effect.

In the present embodiment, one end of the first pipe 16 is provided with casing, and the first pipe 16 is close to the set One end of pipe extends in described sleeve pipe, and 16 side wall of the first pipe and described sleeve pipe sidewall spacers are arranged, and described first Gap between 16 side wall of pipeline and described sleeve pipe side wall forms the second pipe 17.

Wherein, between the second pipe 17 and the filter 4 have connecting tube 15, one end of the connecting tube 15 with The water inlet connection, the other end are connected to the second pipe 17.The setting of connecting tube 15, so that sewage is from second pipe 17 It is flow in filter 4 by connecting tube 15, and then micro-bubble and impurity colloid is driven to be passed into filter 4.

In other examples, U-tube, one end of U-tube and the aeration bucket 11 be may be arranged as communicating pipe Bottom connection, the other end are connect with filter 4, and internal diameter of the U-tube close to one end of filter 4 is less than U-tube close to institute The internal diameter of one end of aeration bucket 11 is stated, and internal diameter of the U-tube close to one end of the aeration bucket 11 is less than the aeration bucket 11 internal diameter.By above-mentioned U-tube also the micro-bubble in sewage can steep the second impurity during floating to carry out Collision or the second impurity bubble are mutually collided with the second impurity bubble, and are united and to be formed impurity colloid.

Wherein, the aerator 1 further includes the water butt 21 being arranged in the aeration bucket 11.In the aeration bucket 11 There is storage chamber between water butt 21.The open end of the water butt 21 is higher than the open end of the aeration bucket 11, described The open end of the water butt 21 is arranged in aeration board 12, and the water butt 21 is connected to the sewage water inlet pipe 2.Preferably, Water butt 21 is arranged in the middle position of the aeration bucket 11, so that forming annular between aeration bucket 11 and water butt 21 Storage chamber.Sewage to be processed is passed through into water butt 21 by sewage water inlet pipe 2, when the sewage in water butt 21 is filled with Afterwards, sewage overflows from the open end of water butt 21 and passes through the limbers 13 on aeration board 12, limbers 13 by sewage separation at The tiny water flow of multiply water, and sewage can also form thin water curtain by the outer edge of aeration board 12.Due to opening for water butt 21 Mouth end is higher than the open end of aeration bucket 11, and the open end of the water butt 21 is arranged in aeration board 12, so that aeration board 12 There is a certain distance between aeration bucket 11, when tiny water flow and thin water curtain drop into aeration bucket 11 from aeration board 12 In the process, tiny water flow and thin water curtain come into full contact with air, while a large amount of air incorporates in sewage, in aeration bucket 11 Form a large amount of micro-bubble.The aeration board 12 is consolidated the setting of 12 water butt 21 of aeration board by the setting of water butt 21 While determining, facilitates and flow to sewage in aeration bucket 11 by limbers 13, enhance the operability of the water treatment system.

Distance carries out specific according to the size of limbers 13 between the aeration board 12 and the open end of the aeration bucket 11 Setting, to guarantee that the sewage of limbers 13 passed through can come into full contact with air, while being dropped in thin water flow and thin water curtain A large amount of micro-bubble is formed when in aeration bucket 11.In the present embodiment, the opening of the aeration board 12 and the aeration bucket 11 The distance between end is 50mm.

Wherein, aeration board 12 can be fixed on the open end of water butt 21 by snap component, can also be fixed by screw It is structure as a whole in the open end of water butt 21, or by aeration board 12 and the open end design of water butt 21, the present embodiment In, aeration board 12 and the installation form of water butt 21 are not limited.

In the present embodiment, the aeration board 12 is made of stainless steel.But aeration board 12 is not limited to stainless steel It is made, is also possible to be made of materials such as plastics or glass.Preferably, the aperture of the limbers 13 is 3mm, the exposure The porosity of gas plate 12 is 50%.The aperture of limbers 13 is not limited to above-mentioned setting, in actual use aeration board 12 The pore size in bucket water hole can be arranged according to actual needs.

In order to avoid overflowing to aeration bucket by the outer edge of aeration board 12 during through aeration board 12 in sewage 11 outside, the outer edge of the aeration board 12 prevent sewage from flowing from water butt 21 without departing from the side wall of the aeration bucket 11 External overflow to from the process for being aerated bucket 11 to aeration bucket 11.But prevent sewage from aeration bucket 11 external overflow simultaneously It is not limited to above-mentioned setting, in other examples, can also be arranged in aeration board 12 far from the side of the aeration bucket 11 Extend baffle 14 along the vertical direction, enclosed using baffle 14 and be set as cavity body structure, prevent outer edge overflow of the sewage from aeration board 12, To guarantee that the sewage passed through from bucket water hole all drops into the inside of aeration bucket 11.Specifically, the aeration board 12 is tied in a ring Structure, the centre bore of the aeration board 12 are set in the open end of the water butt 21, so that the sewage in water butt 21 is from water storage The circumference of the open end of bucket 21 flows on aeration board 12.

As a preferred technical solution of the water treatment system, the filter 4 includes filter vat 41, the mistake Lauter tub 41 is provided with filter layer between the water inlet and the discharge outlet 42.Enter impurity colloid under the action of water flow Into filter vat 41, setting filter layer is blocked on impurity colloid on filter layer, so that it is less to obtain free from foreign meter or impurity Clear water.It is buffered since sewage enters water velocity in filter vat 41, in filter vat 41, the speed of bubble floating is big In the speed of water flow, the impurity of bubble and its package floats to water surface row and forms foam.In the present embodiment, the filter layer is logical Support orifice plate is crossed to be fixed on the side wall of filter vat 41.It in other examples can also be fixed by adhesive, screw etc. On the side wall of filter vat 41.

Setting support orifice plate in the filter vat 41, the support orifice plate are arranged at intervals on the upper of the bottom of the filter vat Side, the discharge outlet 42 are located at the lower section of the support orifice plate, and the water inlet is located at the top of the support orifice plate, the branch Supporting layer group, third filter layer 45, the second filter layer 44 and the first filter layer 43 are set gradually on support orifice plate.Wherein, described The partial size of the filter medium of one filter layer 43 is greater than the partial size of the filter medium of second filter layer 44, second filter layer The partial size of 44 filter medium is greater than the partial size of the filter medium of the third filter layer 45, the filter medium of the supporting layer group Partial size from top to bottom successively become larger.First with the biggish impurity glue of 43 volume of the first filter layer of the biggish filter medium of partial size Body is obstructed on the first filter layer 43.After the impurity of small volume passes through the first filter layer 43, the lesser mistake of partial size is utilized The impurity that second filter layer 44 of filter medium is slightly smaller to volume obstructs, and the smaller impurity of volume passes through the second filter layer 44 Afterwards, the smaller impurity of volume is obstructed using the partial size of filter medium smaller third filter layer 45, promotes filter effect, And reduce a possibility that filter layer is blocked.The setting of supporting layer group is mainly used for the first filter layer 43 and the second mistake Filtering layer 44, third filter layer 45 are supported effect.The partial size of the filter medium of supporting layer group is from top to bottom successively become larger and is set It sets, for preventing the filtrate in supporting layer group from, by supporting orifice plate to flow away, being protected to supporting layer group, while also keeping away by water flow Exempt from the bottom that filtrate enters filter vat 41.

Specifically, the first filter layer 43 with a thickness of 400mm, the partial size of filter medium is 0.8-1.6mm；Second filter layer 44 with a thickness of 300mm, the partial size of filter medium is 0.5-1.0mm；Third filter layer 45 with a thickness of 100mm, filter medium Partial size be 0.2-0.5mm.

In the present embodiment, supporting layer group is made of four layers of support layering, and it is 70mm that each support lift height is equal. Supporting layer group is from top to bottom followed successively by the first support and is layered the 46, second support layering 47, the layering 48 of third support and the 4th support Layering 49.Wherein, the partial size of the filter medium of the first support layering 46 is 0.5-1.0mm, and the filtering of the second support layering 47 is situated between The partial size of matter is 1.0-2.0mm, and the partial size of the filter medium of third support layering 48 is 2.0-4.0mm, the 4th support layering 49 The partial size of filter medium be 4.0-8.0mm, pass through the second support and be layered the filter medium of 47 pair of first support layering 46 and carry out Barrier avoids the filter medium of the first support layering 46 from entering in the second support layering 47, and the filtering of the second support layering 47 is situated between Matter is obstructed by the hole of third support layering 48, while the hole of the 4th support layering 49 is to third support layering 47 Filter medium is obstructed, and is designed by this, using the filter medium of the lesser support layering of the partial size of filter medium to filtering The filter medium of the biggish support layering of the partial size of medium is obstructed, and the filtering in filtering in each support layering is prevented to be situated between Matter drops to the bottom of filter vat 41 with water flow by the filter hole in support orifice plate, with the increasing for the time that filter 4 uses The reduction grown without will lead to medium in filter layer.Preferably, the first support is layered the 46, second support and is layered 47, third support The filter medium of layering 48 and the 4th support layering 49 is magnetic iron ore.Magnetic iron ore is arranged can be to the iron ion in water Absorption guarantees the degree of purity to sewage water filtration.It is worth noting that, each layer filter layer thickness and filter medium partial size not It is limited to above-mentioned setting, actual in use, the thickness of each layer filter layer and the partial size of filter medium can be according to the actual situation It is configured.

Wherein, first filter layer 43 is anthracite filter layer, and the second filter layer 44 is quartz sand filtration layer, third mistake Filtering layer 45 is magnetic iron ore filter layer.By anthracite filter layer, quartz sand filtration layer and magnetic iron ore filter layer, effectively go Except the impurity in sewage, wherein the gap between support orifice plate and 41 bottom of filter vat forms clear water exhalant canal.The water inlet The top of the filter vat 41 is arranged in mouth, and the side wall of the filter vat 41, and the discharge outlet is arranged in the discharge outlet 42 42 are connected to clear water exhalant canal.Preferably, the discharge outlet 42 is arranged in the corresponding filtering of the clear water exhalant canal On the side wall of bucket 41.

In order to store sewage to be filtered, the water inlet and anthracite filter layer interval in the filter vat 41 It is arranged to form water space in the filter vat 41.

The water treatment system further includes back purge system 8, the back purge system 8 and the filter 4 it is described into Mouth of a river connection, when the filter layer in the filter 4 is blocked by impurity and makes the air pressure in the filter 4 lower than external pressure When, the back purge system 8 extracts the water in the filter 4 by the water inlet, to realize the water in the filter 4 Filter layer described in backward erosion.The setting of back purge system 8 is mainly used for backwashing filter 4, by filter vat Impurity in 41 is removed, to guarantee the normal use of the water treatment system.

It is provided with clear water disk 71 outside the filter vat 41, the clear water disk 71 is connected to the discharge outlet 42, the recoil Cleaning device 8 includes exhaust tube 84, siphon destructing tube 83 and backwash tube.Wherein, one end of the backwash tube and it is described into Mouth of a river connection, the other end are connected to the sump 9.One end of the siphon destructing tube 83 is connected to the backwash tube, separately One end is connected to the clear water disk 71.One end of the exhaust tube 84 is connected to the backwash tube, the other end and the sewage Slot 9 is connected to.As the impurity for obstructing on the filter layer in filter 4 and adsorbing increases, the hole of each filter layer will be by It is decrescence small, and not by the resistance of the water flow of the first filter layer 43, the second filter layer 44, third filter layer 45 and supporting layer group It is disconnected to increase, also reduced by the water amount of support orifice plate, when being less than the water amount for entering water inlet by the water amount of filter layer, Water level in filter vat 41 will be gradually increasing, and be entered from the inlet in backwash tube.When the water level in backwash tube reaches When at the nozzle of the connection of exhaust tube 84 and backwash tube, water flow, which enters in exhaust tube 84, is discharged to bilge discharge pipe 5, During this, the water flow discharge that the air in exhaust tube 84 is passed through out of exhaust tube 84, the water of discharge is as piston pumping Air in tracheae 84 is discharged to reduce the air pressure drop in backwash tube, continues the water level in backwash tube by siphonage Rise and flow out in sump 9, drives impurity and foam in filter vat 41 to be discharged to sewage by water flow in the process In slot 9, and it is discharged from bilge discharge pipe 5 to realize the water backward erosion filter layer in the filter 4.Carrying out backwash behaviour When making, one end that siphon destructing tube 83 is connected to clear water disk 71 is immersed in the water of clear water disk 71, and it is anti-to guarantee that air will not enter In flushing pipe, so that being in the state of negative pressure in backwash tube, during backwash, the water in clear water disk 71 constantly passes through Water outlet flows in filter vat 41, and the water level in clear water disk 71 reduces, when the water level in clear water disk 71 is lower than siphon destructing tube 83 Nozzle when, one end that siphon destructing tube 83 is connected to clear water disk 71 is exposed the surface and air communication, and air is from siphon destructing tube 83 enter in exhaust tube 84, and the air pressure inside backwash tube increases as the length of air column in backwash tube increases, when When air pressure inside backwash tube is greater than or equal to external air pressure, the sewage in filter vat 41 stops being discharged from backwash tube, Complete the operation of the backwash to filter 4.Hole when increasing for the impurity with the filter layer in filter vat 41, in filter layer Gap becomes smaller, and the water level in filter vat 41 rises, then carries out the operation of above-mentioned backwash automatically again.By above-mentioned design, Filter 4 is backwashed automatically, the automatic impurity and foam removed in filter 4 avoids impurity from blocking Filtering layer extends the service life of the water treatment system.Specifically, in use, the backwash tube and sump 9 connect Logical one end is immersed in the water of sump 9, guarantees that sewage can be discharged to from one end that sump 9 is connected to during backwash In sump 9, and air will not enter from one end that one end that sump 9 is connected to is connected to.Exhaust tube 84 is connected to sump 9 One end is immersed in the water of sump 9, guarantee exhaust tube 84 in air be smoothly discharged without have air from exhaust tube 84 with One end that sump 9 is connected to enters.Pass through above-mentioned design, it is ensured that the water treatment system can automatically carry out backwash behaviour Make, guarantees the spatter property of the filter 4, extend the service life of the water treatment system.

The backwash tube includes the first backwash tube 81 and the second recoil being connected to first backwash tube 81 Wash pipe 82.First backwash tube 81 is connected to far from one end of the second backwash tube 82 with the water inlet of filter 4, the second backwash The one end of pipe 82 far from the first backwash tube 81 is connected to the bilge discharge pipe 5.In order to make when being backwashed, backwash Interior sewage successfully flows to the top of backwash tube, and the caliber of the second backwash tube 82 is less than first backwash tube 81 Caliber guarantees that when being backwashed, the water full packages of the second backwash tube 82 runs in favor of draining inner air tube.In this reality It applies in example, exhaust tube 84 is connected to the first backwash tube 81.

Preferably, it is provided with the first suction branch 85 and the second suction branch 86 on the exhaust tube 84, described first One end of suction branch 85 is connected to the top of the first backwash tube 81, and the other end is connected to the non-end of suction branch；Second One end of branch pipe is connected to the first backwash tube 81 close to one end of second backwash tube 82, and the other end and exhaust tube 84 connect It is logical.The setting of exhaust tube 84 and the second backwash tube 82, it is stifled in exhaust tube 84 and the one of generation of the second backwash tube 82 The case where plug, sewage can be discharged by another, it is ensured that backwash is gone on smoothly.

In the present embodiment, siphon destructing tube 83 is connected to the top of the first backwash tube 81, in other examples, Siphon destructing tube 83 can select the position being suitably connected to height according to the physical length of backwash tube on backwash tube.

The water treatment system further includes forcing back purge system.When the water level in filter vat 41 is lower than backwashing water bit line When, using forcing back purge system to backwash filter 4, guarantee the cleaning inside filter 4.Force backwash dress The setting set can at any time backwash filter 4, do not need water level in bucket 41 to be filtered and reach exhaust tube 84 and anti- At the nozzle of the connection of flushing pipe.Specifically, the pressure back purge system includes forcing backwash tube 6, the pressure recoil The one end for washing pipe 6 is connected to the sewage water inlet pipe 2, and the other end is connected to 84 selectivity of exhaust tube, the pressure recoil It washes pipe 6 and is provided with switch valve 61 between the sewage water inlet pipe 2 and the exhaust tube 84.Control switch valve 61 to force Backwash tube 6 is respectively communicated with sewage water inlet pipe 2 and exhaust tube 84, connection of the sewage from sewage water inlet pipe 2 and pressure backwash tube 6 Place, which enters, to be forced in backwash tube 6, and the partial air in backwash tube 6 will be forced to extract out from exhaust tube 84.Due to exhaust tube Air in 84 is reduced, and the air pressure in backwash tube reduces, and exhaust tube 84 is connected to the water inlet of filter vat 41, with recoil The air pressure that the air pressure washed in pipe reduces inside filter vat 41 also reduces.Pass through in the discharge outlet 42 of the effect filter vat 41 of air pressure clear Water discharge pipe 7 from clear water disk 71 by clear water and sewage back suction to filter vat 41 in communicating pipe, to make filter vat 41 Internal water level rises, when the water level in backwash tube reaches the position that backwash tube is connected to exhaust tube 84, at the water Reason system carries out recoil operation.

The draining of the bilge discharge pipe 5 for convenience, the processing system further includes cesspool, the exhaust tube 84. Second backwash tube 82 is connected to by cesspool with bilge discharge pipe 5.

As another preferred technical solution of the water treatment system, the water treatment system further includes medicine storing drum 3, One end of the clear water disk 71 is connected with clear water discharge pipe 7, and the top of the clear water discharge pipe 7 is arranged in the medicine storing drum 3, and The water butt 21 is connected to 7 selectivity of clear water discharge pipe.The medical fluids such as disinfectant can be contained in medicine storing drum 3 to arrange clear water Clear water in outlet pipe 7 is further processed, for example, the processing such as carry out disinfection, sterilize to sewage.Alternatively, being contained using medicine storing drum 3 Has medicative medicament, so that the medicament in medicine storing drum 3 has the function for the treatment of after mixing with clear water.By medicine storing drum 3 The top of clear water discharge pipe 7 is set, due to being spiral gravity fluidised form in clear water discharge pipe 7, is in negative inside clear water discharge pipe 7 Pressure condition, under negative pressure and the collective effect of the gravity of the medical fluid of medicine storing drum 3, so that the medical fluid in medicine storing drum 3 flows to clear water row Medical fluid is uniformly mixed by outlet pipe 7 with the clear water of the inside of clear water discharge pipe 7.Wherein, medicine storing drum 3 and 41 bottom of filter vat The distance between be at least 2m.

It is all using the dosing of plunger pump water treatment system on the market at present, this system does not need setting plunger pump, by benefit It can be delivered medication into water with the effect of weight and negative pressure, structure is simple, and has saved one-time investment and running cost.

Specifically, medical fluid pipe fitting 33 is provided on the clear water discharge pipe 7, one end of drug liquid tube 31 passes through drug liquid tube Connector 33 connects out drug storage pipe, and the other end connects water pipe discharge pipe.

Specifically, medicine storing drum 3 is connected to by drug liquid tube 31 with the clear water discharge pipe 7, it is provided on the drug liquid tube 31 Medical fluid valve 32.It can control circulation of the medical fluid in drug liquid tube 31, the convenient control to medical fluid by controlling medical fluid valve 32.

To accelerate the water treatment system to the speed of sewage treatment, multiple filterings are set in the water treatment system Device 4, each filter 4 are connected to by communicating pipe with aeration bucket 11 respectively.Wherein, each filter 4 is connected separately with backwash Device 8, and force recoiling device.In the present embodiment, there are four filters 4 for setting.It in other examples, can be according to reality Border needs the quantity by filter 4 to be set as the different quantity such as one, two, three, five.

In the present invention, a kind of processing method is also provided, applied to the water treatment system of above-mentioned any embodiment, The sewage of sewage water inlet pipe 2 from top to bottom washes away the aeration board 12 of aerator 1, and the limbers 13 on the aeration board 12 is by institute Stating sewage separation is that the tiny water flow of multiply comes into full contact with air, and air involvement sewage and merging with the impurity in sewage to form the One impurity bubble, first impurity bubble within communicating pipe mutually unites to form the second impurity bubble by collision, second impurity steep into Enter filtering in filter 4, wherein the weight of the second impurity bubble is greater than the weight of first impurity bubble.It is carried out in sewage Before being aerated bucket 11, first sewage and air are come into full contact with, so that the ammonia nitrogen or aerobic micro- in the oxygen sewage in air Biology comes into full contact with.When sewage enters the aeration bucket 11 of aerator 1, a large amount of small gas is formed in aeration bucket 11 Bubble, micro-bubble are adhered to the impurity in sewage and form the first impurity bubble, and the first impurity bubble within communicating pipe mutually unite by collision The biggish second impurity bubble of weight and volume is formed, the biggish second impurity bubble of weight sinks and entered under the promotion of water flow In the filter layer of filter 4, impurity is trapped on filter layer by the effect of filter layer.In the processing method, do not need Coagulant is launched, that is, may make that impurity forms impurity micelle, the rate height of uniting of impurity bubble in sewage, water process works well.

Specifically, the communicating pipe includes first pipe 16 and second pipe 17, one end of the first pipe 16 and institute The bottom for stating aeration bucket 11 connects, the lower end of other end connection second pipe 17, described in the upper end connection of the second pipe 17 Water inlet, the flow direction of the sewage in the first pipe 16 are the stream of the sewage in the second pipe 17 from top to bottom Dynamic direction is from the bottom to top.The first impurity bubble squeezes in first pipe 16 unites to form the second impurity bubble, the second impurity Bubble unites to form impurity colloid in pipeline the, wherein the weight and volume of impurity colloid is all larger than the second impurity bubble.Impurity The formation of colloid promotes the effect of filtering convenient for being filtered in filter 4.

As a preferred technical solution of the processing method, the processing method further includes carrying out instead to filter It rinses, when filter 41 is blocked by impurity and makes the air pressure in filter 4 lower than external pressure, the back purge system 8 is logical The water that water inlet extracts in the filter 4 is crossed to incite somebody to action to realize filter layer described in the water backward erosion in the filter 4 Impurity in filter vat 41 is removed, and to guarantee the normal use of the water treatment system, extends the use of the water treatment facilities Service life.

As the preferred technical solution of another kind of the processing method, pressure backwash is carried out to filter 4, works as filtering (water level i.e. in filter vat 41 is lower than exhaust tube 84 and the connection of backwash tube lower than backwashing water bit line for water level in bucket 41 At nozzle) when, using forcing back purge system to backwash filter 4, force the setting of back purge system can be right at any time Filter 4 is backwashed, and the pipe that the water level in bucket 41 to be filtered reaches the connection of exhaust tube 84 and backwash tube is not needed At mouthful.

In the description of this article, it is to be understood that term " first ", " second ", " third ", " the 4th " are only used for retouching It states and is distinguish, do not have particular meaning.

It is to be understood that above-mentioned specific embodiment is only the preferred embodiment and institute's application technology of the utility model Principle, in technical scope disclosed in the utility model, what anyone skilled in the art was readily apparent that Change or replacement should all be covered within the protection scope of the present utility model.

Claims (10)

1. a kind of filter, which is characterized in that there is water inlet and draining including filter vat and support orifice plate, the filter vat Mouthful, the support orifice plate is arranged at intervals on the top of the bottom of the filter vat, and the discharge outlet is located at the support orifice plate Lower section, the water inlet are located at the top of the support orifice plate, supporting layer group, third filtering are set gradually on the support orifice plate Layer, the second filter layer and the first filter layer, wherein the partial size of the filter medium of first filter layer is greater than second filtering The partial size of the filter medium of layer, the partial size of the filter medium of second filter layer are greater than the filter medium of the third filter layer Partial size, the partial size of the filter medium of the supporting layer group from top to bottom successively becomes larger.

2. filter according to claim 1, the supporting layer group includes that the first support set gradually is layered, second holds Support layering, the layering of third support and the layering of the 4th support, first support is layered to be arranged close to second filter layer.

3. filter according to claim 2, the first support layering, second support layering, the third are held The partial size of the filter medium of support layering and the 4th support layering successively becomes larger.

4. filter according to claim 2, which is characterized in that the partial size of the filter medium of first support layering is 0.2-0.5mm；

And/or the partial size of the filter medium of the second support layering is 0.5-1.0mm；

And/or the partial size of the filter medium of the third support layering is 1.0-2.0mm；

And/or the 4th support layering filter medium partial size be 2.0-4.0mm；

And/or the 5th support layering filter medium partial size be 4.0-8.0mm.

5. filter according to claim 3, the first support layering, second support layering, the third are held The thickness of support layering and the 4th support layering is equal.

6. filter according to claim 1, which is characterized in that first filter layer is anthracite filter layer；

And/or second filter layer be quartz sand filtration layer；

And/or third filter layer is magnetic iron ore filter layer；

And/or the filter medium of the supporting layer group is magnetic iron ore.

7. filter according to claim 1, which is characterized in that the top of the filter vat is arranged in the water inlet, The side wall of the filter vat is arranged in the discharge outlet.

8. filter according to claim 1, the water inlet and the first filter layer interval are arranged, the water inlet and institute The gap stated between the first filter layer forms water space.

9. filter according to claim 7, which is characterized in that the discharge outlet is connected with clear water discharge pipe, described clear The outside of the filter vat is arranged in water discharge pipe.

10. filter according to claim 9, which is characterized in that be provided with clear water disk, the clear water outside the filter vat Disk is connected to the discharge outlet.