CN214158795U

CN214158795U - Active sand filter

Info

Publication number: CN214158795U
Application number: CN202022985728.8U
Authority: CN
Inventors: 方芳; 于堃; 潘潇涵
Original assignee: Lvyuan Beijing Environmental Equipment Co ltd
Current assignee: Lvyuan Beijing Environmental Equipment Co ltd
Priority date: 2020-12-12
Filing date: 2020-12-12
Publication date: 2021-09-10
Anticipated expiration: 2030-12-12

Abstract

The application relates to the technical field of water treatment equipment, in particular to an active sand filter, which comprises a filter tank, a filter layer arranged in the filter tank and an active sand filter main body arranged in the filter 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; the water spraying component comprises a water conveying pipeline, a water spraying pipe detachably and fixedly connected with one end of the water conveying pipeline and a water storage tank detachably and fixedly connected with the other end of the water conveying pipeline; one end of the spray pipe, which is far away from the water delivery pipeline, extends into the filtering tank from the side surface of the bottom end of the filtering tank. This application utilizes the water spray subassembly to dirty sand water spray treatment at the bottom of the filtering ponds, reduces hardening of dirty sand for carry the sand ware and can last to promote dirty sand, can effectively improve the treatment effeciency of dirty sand at the bottom of the filtering ponds.

Description

Active sand filter

Technical Field

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

Background

An anaerobic ammonia oxidation process (anammox process) is a sewage treatment process different from the conventional biological denitrification process, which is a process for oxidizing ammonia to nitrogen gas under anoxic conditions with nitrite as an oxidant; or a biological reaction in which ammonia is used as an electron donor to reduce nitrite to nitrogen. In the anaerobic ammonia oxidation process, an active sand filter is commonly used. The active sand filter tank mainly depends on an internal filter material to intercept suspended matters in the sewage to achieve the purpose of purification.

The active sand filter tank 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 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 the drainage pipe discharge 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 sand filter.

The application provides an active sand filter adopts following technical scheme:

an active sand filter tank comprises a filter tank, a filter layer arranged in the filter tank and an active sand filter main body arranged in the filter 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;

the water spraying component comprises a water conveying pipeline, a water spraying pipe detachably and fixedly connected with one end of the water conveying pipeline and a water storage tank detachably and fixedly connected with the other end of the water conveying pipeline; one end of the spray pipe, which is far away from the water delivery pipeline, extends into the filtering tank from the side surface of the bottom end of the filtering tank.

Through adopting above-mentioned technical scheme, utilize the dirty sand water spray of water spray assembly from the bottom of filtering ponds to the filtering ponds bottom to minimize the harden of the dirty sand of bottom of the pool, promote the flow of dirty sand, thereby guarantee at the in-process of carrying sand ware work, dirty sand can continuously move to the bottom of the pool. The water spraying pipe is arranged at the bottom of the filter tank, so that the dirty sand is sprayed at the bottom of the filter tank; the water pipe and the water storage tank are used for continuously providing water source for the water spraying pipe, so that the continuous water spraying of the pool bottom sand is ensured. The spray pipe is detachably and fixedly connected with the bottom of the filter tank, so that the spray pipe is convenient to replace; the spray pipe is fixedly connected with the water delivery pipeline in a detachable mode, and the water delivery pipeline is fixedly connected with the water storage tank in a detachable mode, so that mutual detachment, replacement and overhaul are facilitated.

Compared with the prior art, this application utilizes the water spray subassembly to handle the water spray of dirty sand at the bottom of the filtering ponds, reduces hardening of dirty sand to make the sand lifter can last to promote dirty sand, thereby improve the sand lifting efficiency of sand lifter, and then effectively improve the treatment effeciency of dirty sand at the bottom of the filtering ponds.

Preferably, the water pipeline is provided with a booster pump.

Through adopting above-mentioned technical scheme, utilize the booster pump to make and to spout water components especially and spout and have certain pressure in the writing pipe, on the one hand, from the blowout of spray pipe spun water under the effect of booster pump from the spray pipe, on the other hand for there is certain pressure in the spray pipe, prevents that the dirty sand at filter tank bottom from getting into the spray pipe from the mouth of pipe of spray pipe, forms the hindrance to the spray pipe water spray.

Preferably, one end of the water spraying pipe extending into the filter tank is provided with a rubber sealing layer, and the rubber sealing layer is provided with a plurality of water spraying ports.

Through adopting above-mentioned technical scheme, under the effect of booster pump, from the water spout blowout of spray pipe mouth of pipe spun from the water jet of rubber seal layer to the dirty sand to the filter tank bottom sprays water. Set up rubber at the spray pipe mouth and seal the layer, on the one hand, utilize the rubber to seal the convenient water blowout of spray pipe on the layer, on the other hand can reduce dirty sand as far as possible and get into the mouth of pipe of spray pipe or block the spray pipe to guarantee the orderly function of water spray subassembly.

Preferably, the water spray pipes are uniformly arranged at intervals along the circumferential surface of the bottom of the filter tank; the conduit includes trunk line and with spray pipe quantity complex lateral conduit, the one end of lateral conduit and spray pipe lie in the outer one end of filtering ponds can dismantle fixed connection, the other end and trunk line keep away from the one end of storage water tank can dismantle fixed connection.

By adopting the technical scheme, the sewage sand at the bottom of the filter tank is sprayed by the plurality of spray pipes arranged on the peripheral surface of the bottom of the filter tank, the sewage sand at the bottom of the filter tank can be sprayed from the periphery, the hardening of the sewage sand at the bottom of the filter tank is reduced, the flowing of the sewage sand at the bottom of the filter tank is promoted to the greatest extent, the sewage sand can be ensured to continuously move towards the bottom of the filter tank, the sewage sand is continuously lifted to the sand washer under the action of the sand lifter, and the treatment efficiency of the sewage sand at the bottom of the filter tank is improved,

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.

Preferably, a drainage tube extends out of the drainage tube, and one end of the drainage tube extends into the water storage tank and is detachably and fixedly connected with the water storage tank.

Through adopting above-mentioned technical scheme, can utilize the filtrate as the water source of water spray subassembly to through drainage tube with partly drainage to the storage water tank in the filtrate, and under the effect of conduit and spray pipe, with filtering out the liquid and spout on the dirty sand, with the hardening that reduces dirty sand. On one hand, the filtrate is utilized to spray the dirty sand, compared with the raw water used for spraying the dirty sand, the hardening of the dirty sand can be more effectively reduced, and the flowing of the dirty sand is promoted, so that the sand extraction efficiency of the sand extractor and the treatment efficiency of the dirty sand are further improved; on the other hand, the amount of water sprayed onto the dirty sand is relatively small compared to the filtrate, and is only a small portion of the filtrate, and therefore, the filtrate serves as a water source for the water spray assembly. In addition, other water can be injected into the water storage tank to be used as a water source for spraying the dirty sand.

Preferably, the sand-extracting device further comprises a water inlet pipe extending into the side wall of the filtering tank, a guide pipe arranged outside the sand-extracting pipe and communicated with the water inlet pipe, and a water distributor arranged at one end, far away from the water inlet pipe, of the guide pipe.

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 filtering ponds bottom, thereby utilize active sand to filter main part and water spray assembly to promote and handle the dirty sand that is located the filtering ponds bottom. 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 got into the filtering ponds can also be other arbitrary forms, and everywhere can realize sending into the filtering ponds and do not influence the filtering ponds self and to the processing of raw water and dirty sand can.

Preferably, the sand washing device further comprises a flushing water pipe which is arranged at one end of the sand washer far away from the sand extracting pipe and extends to the outside of the filter tank.

By adopting the technical scheme, flushing water obtained after the sand washer cleans dirty sand is discharged out of the filter tank by utilizing the flushing water pipe, and active sand obtained after the dirty sand cleaning falls into the filter layer again to perform a new round of raw water treatment.

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

this application utilizes the dirty sand water spray of water spray subassembly bottom to the filtering ponds bottom from the bottom of filtering ponds to minimize the hardening of the dirty sand of bottom of the pool, promote the flow of dirty sand, thereby guarantee at the in-process of carrying sand ware work, dirty sand can last to the bottom of the pool motion, make and carry the sand ware to last to promote dirty sand, thereby improve the sand carrying efficiency of carrying the sand ware, and then effectively improve the treatment effeciency of the dirty sand of filtering ponds bottom.

Drawings

Fig. 1 is a schematic view of the overall structure of the activated sand filter 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 partially enlarged view of a portion a in fig. 2.

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 water spray assembly; 31. a water spray pipe; 311. a rubber sealing layer; 312. a water jet; 32. a water delivery pipeline; 321. a booster pump; 322. a first valve; 323. a main pipeline; 324. branch pipelines; 33. a water storage tank; 4. a water inlet pipe; 5. a guide tube; 6. a water distributor; 7. a drainage tube; 71. a second valve.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an active sand filter. Referring to fig. 1, the activated sand filter includes a filter tank 1 and a filter layer disposed inside the filter tank 1, wherein the filter layer may be any kind of filter material for water treatment, and the filter layer is activated 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, the activated sand filter of the present application further includes a water spray assembly 3, and the water spray assembly 3 is disposed outside the filter tank 1. Water spray assembly 3 is from 1 bottoms of filtering ponds to the interior water spray of filtering ponds 1 to the dirty sand water spray of the realization at the bottom of filtering ponds 1, minimize the hardening of the dirty sand of bottom of the pool, promote the flow of dirty sand, thereby guarantee at the in-process of sand extractor 21 work, dirty sand can continuously move to the bottom of the pool, thereby improve sand extractor 21's the efficiency of carrying sand, and then effectively improve the treatment effeciency of the dirty sand at the bottom of filtering ponds 1.

The water spraying component 3 comprises a water spraying pipe 31, a water pipe 32 and a water storage tank 33 which are sequentially detachably and fixedly connected. The connection mode of the three can be arbitrary, and all that can realize the fixed connection of dismantling between the three can make the three normally operate simultaneously. Loop through the staple bolt between the three in this application and connect.

The water pipe 32 is provided with a booster pump 321 and a first valve 322. One end of the spray pipe 31 far away from the water pipe extends into the bottom side surface of the filtering tank 1 and is fixedly connected with the wall of the filtering tank 1. With reference to fig. 3, one end of the water spraying pipe 31 located in the filtering tank 1 is fixedly connected with a rubber sealing layer 311, and a plurality of water spraying ports 312 are formed on the rubber sealing layer 311. By controlling the first valve 322 and the booster pump 321, the water in the water storage tank 33 is sprayed out from the water spraying port 312 through the water pipe 32 and the water spraying pipe 31, so as to spray water to the bottom sand in the filter tank 1.

Further, in order to improve the water spraying efficiency of the water spraying assembly 3, the water spraying pipes 31 are uniformly spaced along the bottom peripheral surface of the filtering tank 1, and the water conveying pipe 32 includes a main pipe 323 and branch pipes 324 having the same number as the water spraying pipes 31. Referring to fig. 2, in the present application, 4 water spraying pipes 31 are uniformly arranged along the bottom peripheral surface of the filtering tank 1 at intervals, 4 branch pipes 324 are also arranged, the branch pipes 324 are connected with one end of the main pipe 323 far away from the water storage tank 33 through a mouthpiece, and one end of the branch pipes 324 far away from the main pipe 323 is connected with the water spraying pipes 31 through an anchor ear.

With continued reference to fig. 2, the activated sand filter of the present application further includes a water inlet pipe 4, a guide pipe 5, and a water distributor 6. The guide pipe 5 is sleeved outside the sand extracting pipe 22 and extends from the middle upper part of the sand extracting pipe 22 to the middle lower part of the sand extracting pipe 22; 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 passes through the water distributor 6.

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. 2, the activated sand filter of the present application is further provided with a funnel-shaped baffle, a small mouth end of the funnel-shaped baffle is fixedly connected with the bottom of the water distributor 6, a large mouth end of the funnel-shaped baffle faces the bottom of the filter tank 1, and the funnel-shaped baffle is used to reduce the influence of the operation of the sand lifter 21 on the water treatment process above the water distributor 6.

Still further, referring to fig. 2, a part of the filtrate pipe 11 located outside the filter tank 1 extends out of the drainage pipe 7, and one end of the drainage pipe 7 far away from the filtrate pipe 11 extends into the water storage tank 33 and is detachably and fixedly connected with the water storage tank 33. The connection mode of the drainage tube 7 and the water storage tank 33 can be any, and all that is needed is to realize the connection between the drainage tube 7 and the water storage tank 33 and enable the filtrate in the filtrate tube 11 to enter the water storage tank 33. For example, a pipe orifice penetrating the inside of the water storage tank 33 is extended from the water storage tank 33, one end of the drainage pipe 7 far away from the filtrate pipe 11 is inserted into the pipe orifice, and the drainage pipe 7 is fixed with the pipe orifice by using a hoop, thereby realizing the connection of the drainage pipe 7 and the water storage tank 33. A second valve 71 is also fixedly connected to the drainage tube 7.

The implementation principle of an active sand filter 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, by controlling the booster pump 321 and the first valve 322, water in the water storage tank 33 is sprayed out from the water spraying port 312 of the water spraying pipe 31 through the water conveying pipeline 32 and sprayed to the dirty sand at the bottom of the filter tank 1, so that the hardening of the dirty sand at the bottom of the filter tank 1 is reduced, the flow of the dirty sand to the bottom of the filter tank 1 is promoted, the lifting of the dirty sand by the sand lifter 21 is promoted, the lifting of the sand lifter to air and water due to the hardening of the dirty sand is reduced, and the sand lifting efficiency of the sand lifter 21 is improved; by controlling the second valve 71, part of the filtrate can be discharged to the water storage tank 33, so as to spray water to the dirty sand at the bottom of the filter tank 1; 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 water spray component 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

1. An active sand filter comprises a filter tank (1), a filter layer arranged in the filter tank (1) and an active sand filter main body (2) arranged in the filter 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: the water spraying device is characterized by further comprising a water spraying assembly (3) arranged outside the filtering tank (1), wherein the water spraying assembly (3) comprises a water conveying pipeline (32), a water spraying pipe (31) detachably and fixedly connected with one end of the water conveying pipeline (32) and a water storage tank (33) detachably and fixedly connected with the other end of the water conveying pipeline (32); one end of the spray pipe (31) far away from the water pipe (32) extends into the filtering tank (1) from the side surface of the bottom end of the filtering tank (1).

2. The activated sand filter of claim 1, wherein: the water pipeline (32) is provided with a booster pump (321).

3. The activated sand filter of claim 2, wherein: one end of the water spraying pipe (31) extending into the filtering tank (1) is provided with a rubber sealing layer (311), and the rubber sealing layer (311) is provided with a plurality of water spraying ports (312).

4. An active sand filter according to claim 3, wherein: the water spraying pipes (31) are uniformly arranged at intervals along the circumferential surface of the bottom of the filter tank (1); the water pipe (32) comprises a main pipe (323) and branch pipes (324) which are matched with the water spraying pipes (31) in quantity, one ends of the branch pipes (324) and one ends of the water spraying pipes (31) which are positioned outside the filtering tank (1) are detachably and fixedly connected, and the other ends of the branch pipes and one ends of the main pipe (323) which are far away from the water storage tank (33) are detachably and fixedly connected.

5. The activated sand filter of claim 4, wherein: and the filter liquid pipe (11) extends from the top of the filter tank (1) to the outside of the filter tank (1).

6. The activated sand filter of claim 5, wherein: a drainage tube (7) extends from the filtrate pipe (11), and one end of the drainage tube (7) extends into the water storage tank (33) and is detachably and fixedly connected with the water storage tank (33).

7. The activated sand filter of claim 1, wherein: the sand extraction device 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 sand extraction pipe (22) 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).

8. The activated sand filter of claim 1, wherein: the sand washing device also comprises a flushing water pipe (24) which is arranged at one end of the sand washer (23) far away from the sand extracting pipe (22) and extends to the outside of the filter tank (1).