CN214808785U

CN214808785U - Filter equipment and filtration equipment

Info

Publication number: CN214808785U
Application number: CN202120908834.8U
Authority: CN
Inventors: 何鹰; 黄享辉; 张向美; 李�真
Original assignee: Guangdong Institute of Science and Technology
Current assignee: Guangdong Institute of Science and Technology
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-23
Anticipated expiration: 2031-04-28

Abstract

The embodiment of the utility model provides a filter equipment and filtration equipment relates to water purification technical field. The embodiment of the utility model provides a filter equipment includes play water side filter plate, intakes side filter plate and outside baffle. The water outlet side filter plate and the water inlet side filter plate are both of an annular structure, the middle part of the water outlet side filter plate is limited to form a water outlet pool, and a filter pool is formed between the water inlet side filter plate and the water outlet side filter plate. The outer side baffle plate is arranged outside the water inlet side filter plate in a surrounding mode, so that a water inlet channel is formed between the outer side baffle plate and the water inlet side filter plate. The filter is annular, the water inlet channel is positioned on the outer side of the filter, the water outlet tank is positioned on the inner side of the filter, water to be filtered flows in the filter from outside to inside, and the sectional area of the filter material in the water flow direction is reduced from large to small in the filtering process, so that the filter well adapts to the change rule that the peripheral interception capacity is large and the internal interception capacity is small, and the utilization rate of the filter material is improved.

Description

Filter equipment and filtration equipment

Technical Field

The utility model relates to a water purification technical field particularly, relates to a filter equipment and filtration equipment.

Background

The 'coagulation-precipitation-filtration-disinfection' is a conventional treatment process of surface water sources and waterworks, and is still adopted by most waterworks in the world at present.

The filtration is an irreplaceable part of the traditional water purification treatment process, the filtration operation is carried out by filling filter materials in the filter tank, the filtration process of the filter tank at present is that water to be filtered enters a filter material layer from the upper part, and the water is discharged from the lower part after impurities in the water are intercepted by the filter material layer, namely the downward flow filtration. However, the inventor researches and discovers that the utilization rate of the filter material is low in the conventional filter device.

SUMMERY OF THE UTILITY MODEL

The object of the utility model includes, for example, provide a filter equipment, it can improve the technical problem that the filter material utilization ratio that exists is low among the prior art.

The purpose of the utility model is still to include, provide a filtration equipment, it can improve the technical problem that the filter material utilization ratio that exists is low among the prior art.

The embodiment of the utility model discloses a can realize like this:

the embodiment of the utility model provides a filtering device, which comprises a water outlet side filtering plate, wherein the water outlet side filtering plate is of an annular structure, and the middle part of the water outlet side filtering plate limits a water outlet pool;

the water inlet side filter plate is of an annular structure and is arranged outside the water outlet side filter plate in a surrounding mode so as to form a filter chamber between the water inlet side filter plate and the water outlet side filter plate; the filter tank is communicated with the water outlet tank through the water outlet side filter plate; and

the outer side baffle is arranged outside the water inlet side filter plates in a surrounding mode, so that a water inlet channel is formed between the outer side baffle and the water inlet side filter plates, and the water inlet channel is communicated with the filter tank through the water inlet side filter plates.

Optionally, the filtering device further includes a water inlet tank and an overflow weir, the overflow weir is disposed between the water inlet tank and the water inlet channel, and the water to be filtered in the water inlet tank enters the water inlet channel by passing over the overflow weir.

Optionally, the filter device further comprises a back-flushing structure, the back-flushing structure comprises a distribution channel arranged on the lower side of the filter chamber, the filter device further comprises a horizontal filter plate arranged between the filter chamber and the distribution channel, and the distribution channel is communicated with the filter chamber through the horizontal filter plate.

Optionally, the back flush structure still includes water washing piece and air washing piece, water washing piece with air washing piece all with the distribution canal intercommunication, so that water washing piece with air washing piece all passes through the distribution canal with the filtering pond intercommunication.

Optionally, the piece is washed to water includes flushing header pipe, main flushing pipe, the side flushing pipe of intaking and goes out the water side flushing pipe, main flushing pipe the side flushing pipe of intaking and go out the water side flushing pipe all with the flushing header pipe intercommunication, just main flushing pipe with the distribution canal intercommunication, the side flushing pipe of intaking with the intake canal intercommunication, go out the water side flushing pipe with the effluent pond intercommunication.

Optionally, the filtering device further comprises a drainage structure; the upper side of the water outlet pool is also provided with a water drainage groove, the water drainage groove and the water outlet pool are mutually independent, and the height of the water outlet side filter plate is lower than that of the water inlet side filter plate, so that flushing liquid entering the filter pool can cross the water outlet side filter plate and enter the water drainage groove; the drainage structure is communicated with the drainage groove to discharge the flushing liquid entering the drainage groove.

Optionally, the drainage structure includes a drainage pipe, a water seal well and a main drainage channel, the main drainage channel is disposed outside the water inlet channel, the water seal well is disposed in the main drainage channel and is communicated with the main drainage channel, and the height of the water seal well is lower than that of the main drainage channel; one end of the drain pipe is communicated with the drainage groove, and the drain pipe penetrates through the water outlet pool and extends to the water seal well.

Optionally, the water inlet side filter plate is further provided with a communication hole for communicating the water inlet channel with the distribution channel; the filter device also comprises a venting structure, and the venting structure is used for communicating the water inlet channel and the water drainage main channel so as to drain accumulated water in the water inlet channel and the distribution channel.

Optionally, the filtering device further comprises a water outlet structure, the water outlet structure comprises a water outlet pipe, a water outlet valve, a water outlet flow stabilizing groove and a clean water main channel, two ends of the water outlet pipe are respectively communicated with the water outlet pool and the water outlet flow stabilizing groove, and the water outlet valve is arranged on the water outlet pipe; the water outlet flow stabilizing groove is communicated with the clean water main channel.

The embodiment of the utility model also provides a filtration equipment. The filtering equipment comprises the filtering device.

The utility model discloses filter equipment and filtration equipment's beneficial effect includes, for example:

the embodiment of the utility model provides a filter equipment includes play water side filter plate, intakes side filter plate and outside baffle. The filter plates on the water outlet side and the water inlet side are both of an annular structure, the middle part of the filter plate on the water outlet side is limited to form a water outlet pool, and a filter pool is formed between the filter plate on the water inlet side and the filter plate on the water outlet side, so that the filter pool is annular. The outer side baffle plate is arranged outside the water inlet side filter plate in a surrounding mode so as to form a water inlet channel between the outer side baffle plate and the water inlet side filter plate, and the water inlet channel is correspondingly annular. The water inlet channel is communicated with the filter tank through the water inlet side filter plate, the filter tank is communicated with the water outlet tank through the water outlet side filter plate, when the water filter is used, water to be filtered enters the filter tank from the water inlet channel, then horizontally flows to the water outlet side filter plate and penetrates through the water outlet side filter plate to enter the water outlet tank, and therefore the filtering operation of the water to be filtered is completed. The filter is annular, the water inlet channel is positioned on the outer side of the filter, the water outlet tank is positioned on the inner side of the filter, water to be filtered flows in the filter from outside to inside, and the sectional area of the filter material in the water flow direction is reduced from large to small in the filtering process, so that the filter well adapts to the change rule that the peripheral interception capacity is large and the internal interception capacity is small, and the utilization rate of the filter material is improved.

The embodiment of the utility model also provides a filtration equipment, it includes foretell filter equipment. Because the filter equipment comprises the filter device, the filter equipment also has the advantage of high utilization rate of filter materials.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a filtering apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line II-II of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 1;

FIG. 4 is a schematic sectional view taken along line IV-IV in FIG. 3.

Icon: 100-a filtration device; 111-water inlet side filter plate; 112-outlet side filter plate; 113-a first filter head; 114-a second filter head; 115-filter pool; 116-a support layer; 117-horizontal filter plate; 118-long handle filter head; 121-a bottom plate; 122-a separator; 123-outer baffle; 124-communicating hole; 130-a water intake structure; 131-a water inlet channel; 132-a water inlet tank; 133-a weir; 134-main water inlet channel; 135-water inlet pipe; 136-a water inlet valve; 140-water outlet structure; 141-a water outlet pool; 142-a water outlet pipe; 143-outlet valve; 144-a water outlet flow stabilizing groove; 145-clear water main canal; 150-a backwash structure; 151-water rinsing; 152-flushing manifold; 153-main flushing pipe; 154-water inlet side flushing pipe; 155-water outlet side flushing pipe; 156-air purge; 157-an air inlet pipe; 158-intake valve; 159-distribution channel; 160-a drainage structure; 161-drainage groove; 162-a drain pipe; 163-water sealed well; 164-main drainage channel; 170-a venting structure; 171-a blow-down pipe; 172-air release valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Fig. 1 is a schematic structural diagram of a filtering apparatus 100 according to the present embodiment, and fig. 2 is a schematic sectional structural diagram at ii-ii in fig. 1. Referring to fig. 1 and fig. 2, the present embodiment provides a filtering apparatus 100, and accordingly, a filtering device (not shown) is provided.

The filtering apparatus includes a filtering device 100 and a water storage device (not shown) which is communicated with the water outlet tank 141 so as to collect the filtered clean water. Optionally, the filtering apparatus further comprises a control device, which is connected to the filtering device 100 to control the operating state of the filtering device 100.

The filter device 100 includes a water outlet side filter plate 112, a water inlet side filter plate 111, and an outer baffle 123. The outlet-side filter plates 112 and the inlet-side filter plates 111 are both of an annular structure, the middle of the outlet-side filter plates 112 defines an outlet tank 141, and a filter tank 115 is formed between the inlet-side filter plates 111 and the outlet-side filter plates 112, so that the filter tank 115 is annular. The outer baffle 123 is disposed around the inlet side filter plate 111 to form an inlet channel 131 between the outer baffle 123 and the inlet side filter plate 111, and the inlet channel 131 is correspondingly annular. The water inlet channel 131 is communicated with the filter tank 115 through the water inlet side filter plate 111, the filter tank 115 is communicated with the water outlet tank 141 through the water outlet side filter plate 112, and when the water filter is used, water to be filtered enters the filter tank 115 from the water inlet channel 131, then horizontally flows towards the water outlet side filter plate 112 and enters the water outlet tank 141 through the water outlet side filter plate 112, so that the filtering operation of the water to be filtered is completed. Because the filter 115 is annular, the water inlet channel 131 is positioned outside the filter 115, the water outlet tank 141 is positioned inside the filter 115, and water to be filtered flows from outside to inside in the filter 115, and the sectional area of the filter material in the water flow direction is reduced from large to small in the filtering process, so that the filter material filtering device well adapts to the change rule that the peripheral interception capacity is large and the internal interception capacity is small, and the utilization rate of the filter material is improved.

The filter device 100 provided in the present embodiment is further explained below:

FIG. 3 is a schematic cross-sectional view taken along line III-III in FIG. 1. Referring to fig. 3, in the present embodiment, the filter device 100 has an annular outlet-side filter plate 112 and an annular inlet-side filter plate 111, the annular outlet-side filter plate 112 and the annular inlet-side filter plate 111 are coaxially sleeved, so that an annular filter chamber 115 is formed between the outlet-side filter plate 112 and the inlet-side filter plate 111, the outlet-side filter plate 112 forms an inner wall of the filter chamber 115, and the inlet-side filter plate 111 forms an outer wall of the filter chamber 115. The filter pool 115 is filled with filter materials, when in use, water to be filtered in the water inlet channel 131 flows through the water inlet side filter plate 111 along the radial direction of the filter pool 115 to the direction close to the water outlet side filter plate 112, so that the filtering is realized, and the filtered pure water flows out of the water outlet side filter plate 112 and enters the water outlet pool 141. Optionally, a supporting layer 116 is further filled in the filter pool 115, the supporting layer 116 is arranged at the bottom of the filter pool 115, and the filter material filled in the filter pool 115 is stacked on the upper side of the supporting layer 116.

It should be noted that, in the description of the present embodiment, the "ring" refers to an end-to-end structure, and the shape thereof may be a circle, a polygon such as a square, or other irregular shape. In the present embodiment, the outlet-side filter sheet 112 and the inlet-side filter sheet 111 are both square-ring-shaped, that is, the filter chamber 115 formed between the outlet-side filter sheet 112 and the inlet-side filter sheet 111 is in a shape of a Chinese character 'hui'.

Specifically, the outlet-side filter plate 112 has four side walls, each of the four side walls is provided with a plurality of first filter heads 113, and the filtered clean water in the filter 115 flows into the outlet tank 141 through the first filter heads 113. Similarly, the water inlet side filter plate 111 also has four side walls, a plurality of second filter heads 114 are arranged on the four side walls, and water to be filtered in the water inlet channel 131 enters the filter chamber 115 through the second filter heads 114. Accordingly, the inlet channel 131 is provided in a ring shape surrounding the inlet side filter plate 111.

Referring to fig. 1-3, in the present embodiment, the filtering apparatus 100 further includes a water inlet structure 130, and the water inlet structure 130 is communicated with the water inlet channel 131, so as to feed the water to be filtered into the water inlet channel 131. Specifically, the water inlet structure 130 includes a water inlet groove 132 and an overflow weir 133, the water inlet groove 132 is disposed outside the outer baffle 123, the overflow weir 133 is disposed between the water inlet groove 132 and the water inlet channel 131, that is, the water inlet groove 132 and the water inlet channel 131 are separated by the overflow weir 133, the overflow weir 133 forms a sidewall of the water inlet groove 132, and the height of the overflow weir 133 is lower than that of the other sidewall of the water inlet groove 132, so that after the height of the water to be filtered entering the water inlet groove 132 reaches the height of the overflow weir 133, the water to be filtered flows over the overflow weir 133 and then flows into the water inlet channel 131.

Further, the water inlet structure 130 further includes a water inlet main channel 134, a water inlet pipe 135 and a water inlet valve 136. The main water inlet channel 134 is formed on one side of the water inlet channel 132 away from the water inlet channel 131, and two ends of the water inlet pipe 135 are respectively communicated with the main water inlet channel 134 and the water inlet channel 132, so that the communication between the main water inlet channel 134 and the water inlet channel 132 is realized through the water inlet pipe 135. The inlet valve 136 is arranged on the inlet pipe 135, and the inlet main channel 134 is connected with the inlet channel 132 through the inlet valve 136.

FIG. 4 is a schematic sectional view taken along line IV-IV in FIG. 3. Referring to fig. 1 to 4, further, the filtering device 100 further includes a water outlet structure 140, and the water outlet structure 140 is communicated with the water outlet tank 141, so as to discharge the filtered clean water entering the water outlet tank 141. Specifically, the water outlet structure 140 includes a water outlet pipe 142, a water outlet valve 143, a water outlet flow stabilizing groove 144 and a main clear water channel 145, two ends of the water outlet pipe 142 are respectively communicated with the water outlet tank 141 and the water outlet flow stabilizing groove 144, the water outlet flow stabilizing groove 144 is communicated with the main clear water channel 145, and thus the clear water entering the water outlet tank 141 sequentially enters the main clear water channel 145 through the water outlet pipe 142 and the water outlet flow stabilizing groove 144. The outlet valve 143 is disposed on the outlet pipe 142, so as to control the on/off of the outlet pipe 142.

Referring again to fig. 1-3, in the present embodiment, the filter apparatus 100 further includes a backwash structure 150, the backwash structure 150 including a distribution channel 159 disposed on a lower side of the filter chamber 115, the filter apparatus 100 further including a horizontal filter plate 117 disposed between the filter chamber 115 and the distribution channel 159, the distribution channel 159 and the filter chamber 115 being in communication through the horizontal filter plate 117.

Specifically, the filter device 100 further includes a bottom plate 121, the periphery of the bottom plate 121 is fixedly connected to the outer baffle 123, and the lower end of the water inlet side filter plate 111 is connected to the bottom plate 121, so that a water inlet channel 131 is defined by the bottom plate 121, the outer baffle 123 and the water inlet side filter plate 111. The periphery of the horizontal filter plate 117 is fixedly connected with the water inlet side filter plate 111, and the horizontal filter plate 117 is arranged at the upper side of the bottom plate 121 at intervals, so that a distribution channel 159 is formed between the horizontal filter plate 117 and the bottom plate 121, and the upper surface of the horizontal filter plate 117 forms the bottom surfaces of the filter chamber 115 and the water outlet tank 141. The horizontal filter plate 117 is provided with a plurality of long-handled filter heads 118 at a portion forming the bottom surface of the filter chamber 115, the filter chamber 115 communicates with the distribution channel 159 through the long-handled filter heads 118, and the portion of the horizontal filter plate 117 forming the bottom surface of the outlet tank 141 is a flat plate, thereby isolating the outlet tank 141 from the distribution channel 159.

Further, the backwashing structure 150 further includes a water flushing member 151 and a gas flushing member 156, and both the water flushing member 151 and the gas flushing member 156 are communicated with the distribution channel 159, so that both the water flushing member 151 and the gas flushing member 156 are communicated with the filter chamber 115 through the distribution channel 159. When in use, the back washing operation can be carried out by adopting a gas washing and water washing mode according to the requirement. And because the distribution canal 159 is located the filter 115 downside, the filter material in the filter 115 is washed from bottom to top to the flush fluid and the flush gas that get into in the distribution canal 159, therefore when carrying out the filter material change, only need to eradicate the surperficial fine particle filter material, places new filter material in the top layer, and new filter material can be selected separately through back flush hydraulic and naturally sinks, and the change of filter material is more convenient.

Further, the water flushing member 151 includes a flushing header 152, a main flushing pipe 153, a water inlet side flushing pipe 154, and a water outlet side flushing pipe 155. The main flushing pipe 153, the water inlet side flushing pipe 154 and the water outlet side flushing pipe 155 are all communicated with the flushing main pipe 152, the main flushing pipe 153 is communicated with the distribution channel 159, and during flushing, flushing liquid in the flushing main pipe 152 enters the distribution channel 159 through the main flushing pipe 153, so that backwashing of the filter chamber 115 is realized; the inlet side flushing pipe 154 is communicated with the inlet channel 131, and during flushing, flushing liquid in the flushing header pipe 152 enters the inlet channel 131 through the inlet side flushing pipe 154 and then enters the filter chamber 115 through the second filter head 114; the outlet side flush pipe 155 is connected to the outlet tank 141, and during flushing, the flushing liquid in the flushing header 152 enters the outlet tank 141 through the outlet side flush pipe 155, and then enters the filter chamber 115 through the first filter head 113.

Optionally, the outlet pipe 142 is connected to the middle of the outlet side flushing pipe 155, and is communicated with the outlet pool 141 through the outlet side flushing pipe 155. Further, valves are provided in the main flushing pipe 153, the water inlet side flushing pipe 154, and the water outlet side flushing pipe 155, and the main flushing pipe 153, the water inlet side flushing pipe 154, and the water outlet side flushing pipe 155 are opened and closed by the valves. Specifically, a valve on the outlet side flush tube 155 is provided between the outlet tube 142 and the flush manifold 152.

Further, the air purge 156 includes a blower (not shown), an air intake pipe 157, and an air intake valve 158. Both ends of the inlet pipe 157 communicate with the blower and the distribution channel 159, respectively, so that the distribution channel 159 is filled with gas when the blower is operated, thereby allowing the filter media particles to be separated from the impurities by the gas impact. An intake valve 158 is provided on the intake pipe 157 to open and close the intake pipe 157.

With continued reference to fig. 1-3, in the present embodiment, the filter device 100 further includes a drainage structure 160. The upper side of the outlet tank 141 is provided with a drainage channel 161, the drainage channel 161 is independent from the outlet tank 141, and the height of the outlet side filter plate 112 is lower than that of the inlet side filter plate 111, so that the flushing liquid entering the filter tank 115 can pass through the outlet side filter plate 112 and enter the drainage channel 161. The drain structure 160 communicates with the drain channel 161 to drain the rinse liquid that enters the drain channel 161.

Specifically, a partition plate 122 is further disposed in the middle of the outlet-side filter plate 112, the partition plate 122 is horizontally disposed above the horizontal filter plate 117, so that the space in the middle of the outlet-side filter plate 112 is divided into an upper part and a lower part by the partition plate 122, the space between the lower side of the partition plate 122 and the horizontal filter plate 117 is an outlet basin 141, and the space on the upper side of the partition plate 122 is a drain tank 161.

The drainage structure 160 includes a drainage pipe 162, a water seal well 163, and a main drainage channel 164. The main drainage channel 164 is disposed outside the inlet channel 131, the water seal well 163 is disposed in the main drainage channel 164 and is communicated with the main drainage channel 164, and the height of the water seal well 163 is lower than that of the main drainage channel 164. One end of the drain pipe 162 communicates with the drain channel 161, and the drain pipe 162 passes through the effluent pool 141 and extends to the water seal well 163. Specifically, a drain 162 is provided at the partition 122 and extends from the underside of the floor 121 through the basin 141 and distribution channels 159 to a water seal well 163. During backwashing, after the washing liquid enters the drain tank 161 from the filter chamber 115, the washing liquid enters the drain main 164 through the drain pipe 162 and the water seal well 163. Meanwhile, in the filtering apparatus 100, a valve is not required to be arranged on the drain pipe 162, so that the problem of water leakage of the valve on the drain pipe 162 in the prior art is thoroughly solved. And the end of drain pipe 162 is provided with water seal well 163, can effectively prevent the foul smell of sewer from getting into filter equipment 100 through water seal well 163, can also deposit the filter material that is taken out by the flush fluid simultaneously, prevents that the filter material from blockking up the sewer.

Further, the filter device 100 further includes a drain structure 170, the drain structure 170 is used for communicating the water inlet channel 131 with the water discharge main channel 164, and the water inlet side filter plate 111 further has a communication hole 124 for communicating the water inlet channel 131 with the distribution channel 159, so that the accumulated water in the water inlet channel 131 and the distribution channel 159 can be discharged to the water discharge main channel 164 through the drain structure 170 communicating with the water inlet main channel 134.

Specifically, the lower end of the inlet-side filter plate 111 is opened with a communication hole 124 to communicate the bottom of the inlet channel 131 with the bottom of the distribution channel 159. The vent structure 170 includes a vent tube 171 and a vent valve 172, with one end of the vent tube 171 communicating with the bottom of the inlet channel 131 and the other end extending into the main drain channel 164, thereby providing communication between the inlet channel 131 and the main drain channel 164. A vent valve 172 is provided on the vent tube 171 to open and close the vent tube 171. Optionally, a maintenance hole is formed in the top plate of the main drainage channel 164, and the maintenance hole is located on the upper side of the emptying valve 172, so that the emptying valve 172 can be operated and maintained conveniently.

According to the filtering apparatus 100 provided in this embodiment, the operating principle of the filtering apparatus 100 is as follows:

in use, the inlet valve 136 is opened, the water to be filtered flows into the inlet channel 132 from the inlet main channel 134 through the inlet pipe 135, and the water to be filtered in the inlet channel 132 passes over the overflow weir 133 and then enters the inlet channel 131. The water to be filtered in the water inlet channel 131 uniformly enters the filter chamber 115 through the second filter head 114, and then passes through the filter material in the radial direction of the filter chamber 115 (the edge of the filter chamber 115 points to the center of the filter chamber 115) for filtering. The filtered clean water is collected by the first filter head 113 to the outlet tank 141, then enters the outlet pipe 142 through the outlet side flushing pipe 155, then enters the clean water main channel 145 through the outlet flow stabilizing groove 144. Meanwhile, the filtering head (i.e. the water level difference between the inlet channel 131 and the outlet tank 141) can be adjusted and controlled by the opening degree of the outlet valve 143.

When the outlet valve 143 is fully opened and still cannot meet the requirement of the filter head, the water level in the inlet channel 131 is forced to rise, and the filter material needs to be backwashed when the water level reaches the set water level.

The back washing process is divided into three stages:

the first stage is as follows: mainly adopts air flushing and auxiliary water flushing. The water inlet valve 136 and the water outlet valve 143 are closed, the blower and the backwash pump are started, the air inlet valve 158, the valves on the water inlet side flushing pipe 154 and the valves on the water outlet side flushing pipe 155 are opened, the compressed air enters the distribution channel 159 through the air inlet pipe 157, and then enters the filter chamber 115 through the long-handle filter head 118 at the horizontal filter plate 117 to impact the filter material particles, so that the dirt is separated from the filter material. Meanwhile, one path of backwash liquid enters the water inlet channel 131 through the water inlet side flushing pipe 154; the other backwash liquid enters the effluent tank 141 through the effluent side flush tube 155. Both backwash liquids enter the filter 115 and flow up to a drain channel 161 through a drain pipe 162 into a water seal 163 and finally into a main drain channel 164. The two backwash liquids can effectively prevent gas from leaking to both sides of the filter 115, so that a large amount of water is not required.

And a second stage: and (5) flushing by combining air and water. The valve on the main flush line 153 is opened on a first stage basis. The washing liquid enters a distribution channel 159 through a washing main pipe 152 and a main washing pipe 153, then enters the filter chamber 115 through a long-handle filter head 118 on the horizontal filter plate 117, and collides with filter material particles together with air, so that the dirt is further separated from the filter material, and a part of the dirt is taken away. In order to prevent the filter material from being carried away by the drainage, the valve opening of the main flushing pipe 153 should not be too large.

And a third stage: and (5) washing with water. On a second stage basis, the air intake valve 158 is closed and the blower is turned off. The valves on the main flush pipe 153, the inlet side flush pipe 154, and the outlet side flush pipe 155 are all opened to the maximum. Flushing liquid enters the filter 115 in three ways, and upwards enters the water seal well 163 through the drainage groove 161 and the drainage pipe 162, filter materials carried out by the flushing liquid are deposited in the water seal well 163, and the flushing liquid is finally discharged into the drainage main channel 164. And after the water in the drainage groove 161 becomes clear, the back flushing is stopped.

The present embodiment provides a filtering apparatus 100 having at least the following advantages:

the embodiment of the utility model provides a filter equipment 100, it is through setting up filtering pond 115 into the annular, and will go out to set up on the pond 141 at annular filtering pond 115 middle part, and the water filtration of treating that gets into in filtering pond 115 flows in filtering pond 115 outside-in, and in the filtering process, the ascending filter material sectional area of rivers side is from big to little, has adapted to the change law that peripheral interception volume is big and inside interception volume is little well, helps improving the utilization ratio of filter material. Meanwhile, the drain pipe 162 of the filtering device 100 does not need to be provided with a valve, so that the problem of water leakage of the valve on the drain pipe 162 in the prior art is thoroughly solved. Be provided with water seal well 163 in the main drainage canal 164, drain pipe 162 is terminal to be linked together with water seal well 163 to can prevent effectively through water seal well 163 that the foul smell of sewer from getting into filter equipment 100, the filter material that can also deposit simultaneously and be taken out by the flush fluid prevents that the filter material from blockking up the sewer.

The present embodiment also provides a filtering apparatus, which includes the filtering device 100 described above. Since the filtering apparatus includes the filtering device 100 described above, there are also all the advantageous effects of the filtering device 100.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A filter device, comprising:

the water outlet side filter plate is of an annular structure, and the middle part of the water outlet side filter plate defines a water outlet pool;

2. The filtration device of claim 1, further comprising an inlet tank and an overflow weir disposed between the inlet tank and the inlet channel, wherein water to be filtered within the inlet tank enters the inlet channel by passing over the overflow weir.

3. The filtration apparatus of claim 1, further comprising a backwash structure including a distribution channel disposed on an underside of the filter chamber, the filtration apparatus further comprising a horizontal filter plate disposed between the filter chamber and the distribution channel, the distribution channel and the filter chamber being in communication through the horizontal filter plate.

4. The filter apparatus of claim 3, wherein the backwash structure further comprises a water wash and an air wash, the water wash and the air wash both communicating with the distribution channel such that the water wash and the air wash both communicate with the filter chamber through the distribution channel.

5. The filter apparatus of claim 4 wherein the water flush means comprises a flush header, a main flush tube, a water inlet side flush tube and a water outlet side flush tube, the main flush tube, the water inlet side flush tube and the water outlet side flush tube all communicating with the flush header, the main flush tube communicating with the distribution channel, the water inlet side flush tube communicating with the water inlet channel, the water outlet side flush tube communicating with the water outlet basin.

6. The filtration device of claim 3, further comprising a drain structure; the upper side of the water outlet pool is also provided with a water drainage groove, the water drainage groove and the water outlet pool are mutually independent, and the height of the water outlet side filter plate is lower than that of the water inlet side filter plate, so that flushing liquid entering the filter pool can cross the water outlet side filter plate and enter the water drainage groove; the drainage structure is communicated with the drainage groove to discharge the flushing liquid entering the drainage groove.

7. The filtration device of claim 6, wherein the drainage structure comprises a drainage pipe, a water seal well, and a main drainage channel, the main drainage channel is disposed outside the inlet channel, the water seal well is disposed within and in communication with the main drainage channel, and the water seal well is at a lower elevation than the main drainage channel; one end of the drain pipe is communicated with the drainage groove, and the drain pipe penetrates through the water outlet pool and extends to the water seal well.

8. The filter device according to claim 7, wherein the inlet-side filter plate further has a communication hole for communicating the inlet channel with the distribution channel; the filter device also comprises a venting structure, and the venting structure is used for communicating the water inlet channel and the water drainage main channel so as to drain accumulated water in the water inlet channel and the distribution channel.

9. The filtering device according to any one of claims 1 to 8, further comprising a water outlet structure, wherein the water outlet structure comprises a water outlet pipe, a water outlet valve, a water outlet flow stabilizing groove and a clear water main channel, two ends of the water outlet pipe are respectively communicated with the water outlet pool and the water outlet flow stabilizing groove, and the water outlet valve is arranged on the water outlet pipe; the water outlet flow stabilizing groove is communicated with the clean water main channel.

10. A filter device, characterized in that it comprises a filter device according to any one of claims 1-9.