CN214115282U - Active biological sand filtration equipment - Google Patents

Abstract

The application relates to the technical field of water treatment equipment, in particular to active biological sand filtration equipment, which comprises a filtration tank, a filtration layer arranged in the filtration tank and an active sand filtration main body arranged in the filtration tank; the active sand filtering main body comprises a sand lifting pipe extending from the bottom of the filtering tank to the top of the filtering tank, a sand lifter arranged at one end of the sand lifting pipe close to the bottom of the filtering tank and a sand washer arranged at one end of the sand lifting pipe close to the top of the filtering tank; still including setting up in the inside stirring subassembly of filtering ponds, the stirring subassembly is located including the cover and carries the sand outside of the tubes and rotate the rotation section of thick bamboo of being connected with carrying the sand pipe, a plurality of fluctuation poles of fixed connection in the tip that the rotation section of thick bamboo is close to the filtering ponds bottom and be located the tip that the rotation section of thick bamboo is close to the filtering ponds top and drive rotation section of thick bamboo pivoted drive assembly, and the rotation section of thick bamboo extends to the filtering ponds bottom from the filtering ponds top. This application utilizes the stirring subassembly to promote the dispersion and the flow of dirty sand, improves the sand efficiency of carrying the sand machine, and then improves the treatment effeciency to dirty sand at the bottom of the filtering ponds.

Description

Active biological sand filtration equipment

Technical Field

The application relates to the technical field of water treatment equipment, in particular to active biological sand filtration equipment.

Background

The deep denitrification process is a process for performing deep denitrification treatment on wastewater to prevent water eutrophication. In practice, a biological denitrification method of nitrification-denitrification is mostly adopted, namely, nitrogen compounds are firstly oxidized into nitrates by nitrifying bacteria in the wastewater under aerobic conditions, and then the nitrates are reduced into gaseous nitrogen and other final gaseous products by denitrifying bacteria in the wastewater under anoxic conditions and released into the atmosphere. In the deep denitrification process, active biological sand filtration equipment is commonly used. The active biological sand filter equipment mainly depends on an internal filter material to intercept suspended matters in the sewage to achieve the purpose of purification.

The active biological sand filtration equipment comprises a filter tank, an active sand filter layer and a central pipe, wherein the active sand filter layer and the central pipe are arranged in the filter tank, the central pipe is of a double-layer structure, a raw water inlet pipe extends from the side wall of the filter tank to the outer layer of the central pipe, a water distributor is arranged on the outer layer of the central pipe close to the bottom end of the filter tank, and raw water enters the filter layer through the water inlet pipe, the outer layer of the central pipe and the water distributor; the side wall of the top end of the filter tank is provided with a filtrate outlet pipe, and filtrate after being treated by the filter layer is discharged from the filter tank through the filtrate outlet pipe; the inner layer of the central pipe is a sand lifting pipe which extends from the bottom end of the filter tank to the top end of the filter tank, a sand lifting device is arranged at the position, located at the bottom end of the filter tank, of the sand lifting pipe, a sand washer is arranged at the position, close to the top end of the filter tank, of the sand lifting pipe, sand washing is carried out by utilizing the sand lifting device to lift dirty sand located at the bottom of the filter tank to the position of the sand washer, the cleaned active sand returns to the surface of the filter layer again, and liquid after the dirty sand is cleaned is discharged out of the filter tank from a water outlet pipeline.

To the correlation technique among the above-mentioned, the inventor thinks, when filter tank bottom dirty sand takes place to harden, dirty sand can not continuously flow to the filter tank bottom, and what sand lifter promoted is more air and water, therefore the efficiency that sand lifter promoted dirty sand reduces, influences the promotion and the processing of dirty sand in the filter tank, and simultaneously, the height of active sand filter layer in the filter tank can increase, even along with the filtrate from straining the drain pipe and discharging the filter tank, therefore can influence the quality of water of filtrate.

SUMMERY OF THE UTILITY MODEL

In order to improve the treatment effeciency of dirty sand in sand filter bottom, this application provides an active biological sand filtration equipment.

The application provides an active biological sand filtration equipment adopts following technical scheme:

an active biological sand filtration device comprises a filtration tank, a filtration layer arranged in the filtration tank and an active sand filtration main body arranged in the filtration tank; the active sand filtering main body comprises a sand lifting pipe extending from the bottom of the filtering tank to the top of the filtering tank, a sand lifter arranged at one end of the sand lifting pipe close to the bottom of the filtering tank and a sand washer arranged at one end of the sand lifting pipe close to the top of the filtering tank;

still including setting up in the inside stirring subassembly of filtering ponds, the stirring subassembly is located including the cover and carries the sand outside of the tubes and rotate the rotation section of thick bamboo of being connected with carrying the sand pipe, a plurality of fluctuation poles of fixed connection in the tip that the rotation section of thick bamboo is close to the filtering ponds bottom and be located the tip that the rotation section of thick bamboo is close to the filtering ponds top and drive rotation section of thick bamboo pivoted drive assembly, and the rotation section of thick bamboo extends to the filtering ponds bottom from the filtering ponds top.

Through adopting above-mentioned technical scheme, utilize the stirring subassembly to fluctuate to the dirty sand of filtering ponds bottom, reduce hardening of bottom of the pool dirty sand, and promote dirty sand to flow to the bottom of the pool, when carrying sand ware during operation, it is rotatory along self axis direction to utilize drive assembly drive to rotate a section of thick bamboo, at the rotatory in-process of a rotation section of thick bamboo, the fluctuation pole rotates at the bottom of filtering ponds along with the rotation of a rotation section of thick bamboo, the rotatory in-process of fluctuation pole is undulant to the mud at the bottom of the filtering ponds, on the one hand, the fluctuation pole is undulant to the mud that hardens, break up the mud that hardens, on the other hand, the fluctuation pole is undulant to the mud that does not harden, thereby promote dirty sand to move to the filtering ponds bottom from the position that is close to the filtering ponds bottom, and utilize the sand extractor to promote the dirty sand that flows to the filtering ponds bottom.

After the dirty sand of filter tank bottom hardens with among the correlation technique, what the sand lifter promoted is more that air and water compare, this application utilizes the fluctuation pole to fluctuate the dirty sand of tank bottom through the rotation of stirring subassembly, promotes the dispersion and the flow of dirty sand to improve the sand lifting efficiency of sand lifter, and then improve the treatment effeciency to the dirty sand of filter tank bottom.

Preferably, the driving assembly comprises a gear ring sleeved at the end part of the rotating cylinder close to the top of the filter tank, a gear meshed with the gear ring and a motor fixedly connected with the gear.

Through adopting above-mentioned technical scheme, utilize drive assembly drive to rotate a section of thick bamboo along self axis direction rotatory to drive undulant pole and rotate, accomplish the undulant of utilizing undulant pole to the bottom of the pool dirty sand. The gear is driven to rotate by controlling the motor to drive the gear to rotate, and the gear ring meshed with the gear is driven to rotate.

Preferably, the diameter of the toothed ring is greater than the diameter of the toothed wheel.

By adopting the technical scheme, in the process that the motor indirectly drives the rotating cylinder to rotate, the diameter of the gear is smaller than that of the gear ring, so that the rotating speed of the gear ring is smaller than that of the gear ring, and the rotating speed of the rotating cylinder is relatively slow under the action of the motor, so that the rotating speed of the fluctuation rod is also slow, and under the condition that the fluctuation rod rotates slowly, the fluctuation rod can scatter sludge at the bottom of the tank, and the treatment efficiency of the dirty sand at the bottom of the sand filter tank is improved; meanwhile, the fluctuation rod can not stir the bottom of the filtering tank by a large margin, and the rotation of the fluctuation rod has small influence on the middle part and the upper part of the filtering tank, so that the influence on the water treatment efficiency of the filtering tank is small.

Preferably, the wave bars are arranged at regular intervals along the circumferential surface of the rotary cylinder.

Through adopting above-mentioned technical scheme, utilize the fluctuation pole that distributes in the different positions of rotary drum circumference to fluctuate bottom of the pool dirty sand, the bottom of the pool dirty sand that will harden is broken up as far as possible to promote dirty sand to flow to the bottom of the pool, make the sand lifting efficiency of sand lifting pump improve, thereby further improve the treatment effeciency of filter tank bottom dirty sand.

Preferably, the wave bars are arranged at regular intervals along the length direction of the rotating cylinder.

Through adopting above-mentioned technical scheme, utilize the undulant pole that distributes at a rotation section of thick bamboo length direction to fluctuate the bottom of a pool dirty sand, break up the dirty sand of the bottom of a pool co-altitude as far as possible to promote dirty sand to flow to the bottom of a pool, make carrying sand efficiency of carrying sand pump improve, thereby further improve the treatment effeciency of filter tank bottom dirty sand.

Preferably, the water distributor also comprises a water inlet pipe extending into the side wall of the filtering tank, a guide pipe arranged outside the rotary drum and communicated with the water inlet pipe, and a water distributor arranged at one end of the guide pipe far away from the water inlet pipe, wherein the fluctuation rod is positioned between the water distributor and the bottom of the filtering tank.

Through adopting above-mentioned technical scheme, utilize inlet tube, stand pipe and water-locator, send the raw water into the filtering ponds to utilize the filter layer in the filtering ponds to carry out the processing of raw water, therefore can form dirty sand at the bottom of the filtering ponds, utilize the undulant pole that is located between the bottom of water-locator and the filtering ponds to fluctuate mud, promote dirty sand to flow to the bottom of the pool, make the sand extraction efficiency of sand extraction pump improve, thereby further improve the treatment effeciency of dirty sand at the bottom of the filtering ponds again.

In addition, the guide pipe is arranged outside the sand extracting pipe, so that the space in the filter tank can be effectively saved, and the water treatment efficiency of the filter tank is improved. The mode that raw water gets into the filtering ponds can be other arbitrary forms, and everywhere can realize sending into the filtering ponds with do not influence the filtering ponds self to the processing of raw water and dirty sand can.

Preferably, one end of the wave lever, which is far away from the rotating cylinder, is in a paddle shape.

Through adopting above-mentioned technical scheme, set up the one end of keeping away from the rotary drum with the fluctuation pole into the paddle form, further promote the fluctuation of fluctuation pole to bottom of the pool mud to break up bottom of the pool mud as far as possible, and promote mud flow direction bottom of the pool.

Preferably, the device also comprises a filtrate pipe extending from the top of the filter tank to the outside of the filter tank.

By adopting the technical scheme, the filtrate after the active sand filter tank treatment is discharged from the filtrate outlet pipe from the top of the filter tank.

In summary, the present application includes at least one of the following beneficial technical effects:

this application utilizes the stirring subassembly to fluctuate the dirty sand of filtering ponds bottom, breaks up the dirty sand of bottom of the pool to promote dirty sand to flow to the bottom of the pool. After the dirty sand of filter tank bottom hardens with among the correlation technique, what the sand lifter promoted is more that air and water compare, this application utilizes the fluctuation pole to fluctuate the dirty sand of tank bottom through the rotation of stirring subassembly, promotes the dispersion and the flow of dirty sand to improve the sand lifting efficiency of sand lifter, and then improve the treatment effeciency to the dirty sand of filter tank bottom.

Drawings

Fig. 1 is a schematic view of the overall structure of the active biological sand filtration apparatus of the present application.

Fig. 2 is a schematic view showing an internal structure of the filtration tank of fig. 1.

Fig. 3 is a cross-sectional view of fig. 1.

Fig. 4 is a schematic diagram of a part of the structure in fig. 1 after being hidden.

Fig. 5 is a partially enlarged view of a portion a in fig. 4.

Fig. 6 is a partially enlarged view of a portion B in fig. 4.

Description of reference numerals: 1. a filtration tank; 11. a filtrate pipe; 2. an active sand filter body; 21. a sand extractor; 22. a sand extracting pipe; 23. a sand washer; 24. flushing the water pipe; 25. a bellows; 3. a stirring assembly; 31. a drive assembly; 311. a motor; 312. a gear; 313. a toothed ring; 32. a rotating cylinder; 33. a wave bar; 4. a water inlet pipe; 5. a guide tube; 6. a water distributor.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses active biological sand filtration equipment. Referring to fig. 1, the active biological sand filtration apparatus includes a filtration tank 1 and a filtration layer disposed inside the filtration tank 1, wherein the filtration layer may be any kind of filtration material for water treatment, and the filtration layer is active sand in the present application. Raw water is added into the filter tank 1, and the filter layer is used for filtering the raw water, so that the water treatment by the active sand filter tank is realized.

Due to long-term sewage treatment, the active sand in the filter tank 1 carries substances intercepted by the raw water to be treated, and the substances are precipitated at the bottom of the filter tank 1 along with the active sand to become dirty sand. Referring to fig. 2, the present application further includes an active sand filtering main body 2, and the active sand filtering main body 2 is disposed inside the filtering tank 1 for treating the dirty sand.

The active sand filtering main body 2 comprises a sand extracting pipe 22, a sand extracting device 21 and a sand washer 23, wherein the sand extracting pipe 22 is positioned in the middle of the filtering tank 1 and extends from the bottom of the filtering tank 1 to the top of the filtering tank 1; the sand extractor 21 is positioned at the bottom of the filtering tank 1 and is fixedly connected with one end of the sand extracting pipe 22 positioned at the bottom of the filtering tank 1; the sand washer 23 is positioned at the top of the filter tank 1 and is fixedly connected with one end of the sand lifting pipe 22 positioned at the top of the filter tank 1. One end of the sand washer 23 close to the sand extracting pipe 22 is also fixedly connected with a corrugated cylinder 25, and the corrugated cylinder 25 is sleeved outside the sand extracting pipe 22; meanwhile, one end of the sand washer 23, which is far away from the sand lifting pipe 22, is also fixedly connected with a flushing water pipe 24, and the flushing water pipe 24 horizontally extends to the side wall of the filter tank 1 from the sand washer 23 and penetrates out of the side wall of the filter tank 1.

When the dirty sand at the bottom of the filter tank 1 is treated, the sludge at the bottom of the filter tank 1 is lifted to a sand washer 23 through a sand lifting pipe 22 by using a sand lifter 21, and the dirty sand is cleaned by using the sand washer 23; clean active sand obtained after cleaning falls into the filter tank 1 again through the corrugated cylinder 25 for raw water treatment again, and cleaning water after cleaning is discharged out of the filter tank 1 along the cleaning water pipe 24, so that the treatment of dirty sand is completed.

Referring to fig. 2 and 3, this application still includes stirring subassembly 3, and stirring subassembly 3 is located inside filtering ponds 1, utilizes stirring subassembly 3 to fluctuate to the dirty sand at the bottom of filtering ponds 1 to the dirty sand that will harden or not harden is broken up, promotes dirty sand to flow at the bottom of filtering ponds 1, thereby guarantees at the in-process of carrying sand ware 21 work, and dirty sand can continuously move to the bottom of the pool, improves the sand carrying efficiency of carrying sand ware 21, and then effectively improves the treatment effeciency of the dirty sand at the bottom of filtering ponds 1.

The stirring assembly 3 comprises a rotating cylinder 32, a plurality of fluctuation rods 33 and a driving assembly 31, the rotating cylinder 32 is sleeved outside the sand extracting pipe 22 and is rotatably connected with the sand extracting pipe 22 through a bearing, and the rotating cylinder 32 extends from the top of the filtering tank 1 to the bottom of the filtering tank 1; the fluctuation pole 33 is located the one end fixed connection at the bottom of filtering ponds 1 with a section of thick bamboo 32, and drive assembly 31 is located the tip that a section of thick bamboo 32 is close to filtering ponds 1 top, and drives a section of thick bamboo 32 rotation from filtering ponds 1 top to drive fluctuation pole 33 rotates, realize the fluctuation to the mud at the bottom of filtering ponds 1.

Referring to fig. 4 and 5, the driving assembly 31 includes a ring gear 313, a gear 312, and a motor 311. The gear ring 313 is sleeved outside the rotating cylinder 32 and is close to the top of the filter tank 1, and the inner side of the gear ring 313 is fixedly connected with the rotating cylinder 32; the gear 312 is engaged with the gear ring 313; one side of the motor 311 is fixedly connected with the sand washer 23, and the output end of the motor 311 is fixedly connected with the gear 312 through a driving rod. The gear 312 is driven to rotate by the control motor 311, and the gear ring 313 is driven to rotate, so that the rotation of the gear ring 313 drives the rotation cylinder 32 to rotate. Furthermore, the diameter of the gear ring 313 is larger than that of the gear 312, so that the gear ring 313 rotates at a slower speed in the process that the gear 312 drives the gear ring 313 to rotate, the wave rod 33 does not stir the bottom of the filter tank 1 to a great extent, and the rotation of the wave rod 33 has a smaller influence on the middle and upper parts of the filter tank 1, so that the influence on the water treatment efficiency of the filter tank 1 is smaller. In addition, referring to fig. 3, a housing is provided outside the toothed ring 313 and the gear 312, and the top of the housing is fixedly connected to the sand lifting pipe 22, and at the same time, the top of the housing protrudes toward the top of the filtration tank 1, so that the activated sand released from the bellows 25 falls into the filtration tank 1 along the top surface of the housing.

Further, the wave bars 33 may be uniformly spaced along the circumferential direction of the rotary cylinder 32, and referring to fig. 2, the wave bars 33 are provided with 4 in the present application along the circumferential direction of the rotary cylinder 32. Still further, undulant pole 33 can be followed the even interval setting of length direction of a rotary drum 32, refer to fig. 3, and undulant pole 33 is provided with 3 rows along the even interval of length direction of a rotary drum 32 in this application to further break up dirty sand at different positions and not co-altitude at the bottom of filter tank 1, promote dirty sand to flow to the bottom of the pool. Further, referring to fig. 4 and 6, the end of the fluctuation rod 33 away from the rotating cylinder 32 is paddle-shaped, which further promotes the fluctuation of the fluctuation rod 33 to the bottom sludge, breaks up the bottom sludge as much as possible, and promotes the sludge to flow to the bottom of the tank.

Referring to fig. 3, the present application further includes a water inlet pipe 4, a guide pipe 5, and a water distributor 6. The guide tube 5 is sleeved outside the rotary cylinder 32 and extends from the middle upper part of the rotary cylinder 32 to the middle lower part of the rotary cylinder 32; the water inlet pipe 4 penetrates into the filtering tank 1 from the side wall of the top of the filtering tank 1, extends to one end, close to the top of the filtering tank 1, of the guide pipe 5, and is fixedly connected with and communicated with the guide pipe 5; the water distributor 6 is fixedly connected and communicated with one end of the guide pipe 5 far away from the water inlet pipe 4, and the water outlets of the water distributor 6 are positioned around the water distributor 6; meanwhile, the sand lifting pipe 22 and the rotary drum 32 pass through the water distributor 6, and the fluctuation rod 33 is positioned between the water distributor 6 and the bottom of the filtering tank 1.

In addition, the side wall of the top of the filtering tank 1 is also fixedly connected with a filtrate pipe 11, the filtrate pipe 11 is L-shaped, one end of the filtrate pipe 11 is close to the top of the filtering tank 1, and the other end of the filtrate pipe extends out of the filtering tank 1 from the side wall far away from the top of the filtering tank 1. When raw water is treated, the raw water enters the filter layer from the water inlet pipe 4 through the guide pipe 5 and the water outlets around the water distributor 6; the raw water moves from a position close to the bottom of the filter tank 1 to the top of the filter tank 1, and is treated by the filter layer, and the treated water is discharged out of the filter tank 1 from a filtrate pipe 11 at the top of the filter tank 1, so that filtrate is obtained.

Referring to fig. 3, the present application is further provided with a funnel-shaped baffle, the small opening end of the funnel-shaped baffle is fixedly connected with the rotary drum 32, the large opening end of the funnel-shaped baffle faces the bottom of the filtering tank 1, and the funnel-shaped baffle is utilized to reduce the influence of the operation of the sand lifter 21 on the water treatment process above the water distributor 6.

The implementation principle of the active biological sand filtration equipment of the embodiment of the application is as follows:

when the dirty sand at the bottom of the filter tank 1 is treated, the sludge at the bottom of the filter tank 1 is lifted to a sand washer 23 through a sand lifting pipe 22 by using a sand lifter 21, and the dirty sand is cleaned by using the sand washer 23; meanwhile, the gear 312 is driven to rotate by controlling the motor 311, the rotation of the gear 312 drives the rotating cylinder 32 to rotate at the same time, and the rotating cylinder 32 drives the fluctuation rod 33 to rotate at the same time, so that the dirty sand at the bottom of the filter tank 1 is scattered, the flow of the dirty sand to the bottom of the filter tank 1 is promoted, the lifting of the sand lifter 21 to the dirty sand is promoted, the lifting of the sand lifter to air and water caused by the hardening of the dirty sand is reduced, and the sand lifting efficiency of the sand lifter 21 is improved; clean active sand obtained after cleaning falls into the filter tank 1 again through the corrugated cylinder 25 for raw water treatment again, and cleaning water after cleaning is discharged out of the filter tank 1 along the cleaning water pipe 24, so that the treatment of dirty sand is completed. This application improves the sand extraction efficiency of sand extractor 21 through stirring subassembly 3 to improve the treatment effeciency of 1 end dirty sand of filtering ponds.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. An active biological sand filtration device comprises a filtration tank (1), a filtration layer arranged in the filtration tank (1) and an active sand filtration main body (2) arranged in the filtration tank (1); active sand filters main part (2) including extending to sand extraction pipe (22) at filter tank (1) top from filter tank (1) bottom, set up in sand extraction pipe (22) and be close to sand extractor (21) of filter tank (1) bottom one end and set up in sand extraction pipe (22) and be close to sand washer (23) of filter tank (1) top one end, its characterized in that: still including setting up in inside stirring subassembly (3) of filtering ponds (1), stirring subassembly (3) are located including the cover and are carried sand pipe (22) outer and with carry sand pipe (22) rotation section of thick bamboo (32) of being connected, a plurality of ripples pole (33) that fixed connection is close to the tip at the bottom of filtering ponds (1) in rotation section of thick bamboo (32) and be located rotation section of thick bamboo (32) and be close to tip and drive rotation section of thick bamboo (32) pivoted drive assembly (31) on filtering ponds (1) top, rotation section of thick bamboo (32) extend to filtering ponds (1) bottom from filtering ponds (1) top.

2. The active biological sand filtration apparatus of claim 1, wherein: the driving component (31) comprises a gear ring (313) sleeved at the end part of the rotating cylinder (32) close to the top of the filter tank (1), a gear (312) meshed with the gear ring (313) and a motor (311) fixedly connected with the gear (312).

3. The active biological sand filtration apparatus of claim 2, wherein: the diameter of the gear ring (313) is larger than the diameter of the gear (312).

4. The active biological sand filtration apparatus of claim 3, wherein: the wave bars (33) are arranged at regular intervals along the peripheral surface of the rotary cylinder (32).

5. The active biological sand filtration apparatus of claim 4, wherein: the wave bars (33) are arranged at even intervals along the length direction of the rotating cylinder (32).

6. The active biological sand filtration apparatus of claim 5, wherein: the water distributor is characterized by further comprising a water inlet pipe (4) extending into the side wall of the filtering tank (1), a guide pipe (5) arranged outside the rotating cylinder (32) and communicated with the water inlet pipe (4), and a water distributor (6) arranged at one end, far away from the water inlet pipe (4), of the guide pipe (5), wherein the fluctuation rod (33) is located between the water distributor (6) and the bottom of the filtering tank (1).

7. The active biological sand filtration apparatus of claim 6, wherein: one end of the fluctuation rod (33) far away from the rotating cylinder (32) is in a paddle shape.

8. The active biological sand filtration apparatus of claim 1, wherein: and the filter liquid pipe (11) extends from the top of the filter tank (1) to the outside of the filter tank (1).

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