CN215585631U

CN215585631U - Backwashing water recycling device

Info

Publication number: CN215585631U
Application number: CN202122389055.4U
Authority: CN
Inventors: 周卫国; 马静; 张孝勤; 王朝军; 黄谨瑜; 杨军; 王慧
Original assignee: Xinjiang Tianhengji Water Co ltd
Current assignee: Xinjiang Tianhengji Water Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-21
Anticipated expiration: 2031-09-29

Abstract

The utility model belongs to the technical field of water production in water supply plants, and particularly discloses a backwashing water recycling device which comprises a filtering mechanism and a water collecting mechanism, wherein the filtering mechanism comprises a filtering tank and a filtering layer arranged at the bottom end of the filtering tank, the top end of the filtering tank is communicated with a water inlet pipe, the bottom end of the filtering tank is communicated with a water outlet pipe, the water outlet pipe is communicated with a backwashing water inlet pipe, the water outlet pipe is provided with a first valve, the backwashing water inlet pipe is provided with a second valve, the side surface of the filtering tank is communicated with a backwashing water outlet pipe, the backwashing water outlet pipe is provided with a third valve, the water collecting mechanism comprises a water collecting tank, a filter screen and a drainage unit for draining backwashing water in the water collecting tank, the free end of the backwashing water outlet pipe is communicated with the water collecting tank, the filter screen is vertically arranged in the water collecting tank, and the side surface of the filter screen is fixedly connected with the inner wall of the water collecting tank. The utility model can filter the back washing water for cleaning the filter layer and then convey the back washing water to the flocculation tank for purification treatment, thereby saving water sources and avoiding the pollution of water environment caused by the discharge of the back washing water.

Description

Backwashing water recycling device

Technical Field

The utility model relates to the technical field of water production in water supply plants, in particular to a backwashing water recycling device.

Background

In the production process of a water supply plant, after a filter box filters raw water in a flocculation tank for a period of time, a filter layer in the filter box is easy to block, so that the filtering effect of the filter layer is poor, the filter layer in the filter box needs to be subjected to backwashing treatment to recover the filtering effect of the filter layer, backwashing water for flushing the filter layer accounts for 3% -10% of the total water production amount of the water supply plant, at present, many water supply plants adopt measures of directly discharging the backwashing water or discharging the backwashing water into a nearby water body after passing through a proper sedimentation tank, and water resource waste and pollution to the water body environment are easily caused; and the backwashing water of the filter tank is fully recycled, so that the method has important significance for saving water resources and realizing sustainable development of the water resources.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a backwashing water recycling device which can recycle backwashing water of a water plant.

In order to achieve the purpose, the utility model provides the following basic technical scheme: backwashing water recycling device, including filtering mechanism and the water-collecting mechanism who is used for collecting backwashing water, filtering mechanism includes the rose box and locates the filtering layer of rose box bottom, the top intercommunication of rose box has the inlet tube, the bottom intercommunication of rose box has the outlet pipe, the intercommunication has into backwash water pipe on the outlet pipe, be equipped with first valve on the outlet pipe, be equipped with the second valve on advancing backwash water pipe, the side intercommunication of rose box has out backwash water pipe, be equipped with the third valve on going out backwash water pipe, water-collecting mechanism includes header tank, filter screen and the drainage unit who is used for discharging the header tank in backwashing water, the free end and the header tank intercommunication of play backwash water pipe, the vertical inside of locating the header tank of filter screen, the side of filter screen all with the inner wall rigid coupling of header tank.

The principle and the beneficial effects of the utility model are as follows: when filtering the raw water after the flocculation basin is handled, the raw water passes through the inlet tube and gets into in the rose box, then the raw water filters through the filtering layer, discharge from the outlet pipe afterwards, after filtering a period when the filtering layer, when needing to wash the filtering layer, close first valve, and open second valve and third valve, let in the backwash water through advancing the backwash water pipe in to the rose box afterwards, the backwash water that gets into the rose box can be with the interior impurity of filtering layer rush out the filtering layer, and along with backwash water together gets into in the header tank, backwash water that gets into the header tank passes through the filter screen after filtering, flow direction filter screen's left side, carry the left backwash water of filter screen to the flocculation basin through drainage unit afterwards and continue to handle, with this with backwash water purification becomes clear water. Compared with the prior art, the utility model can filter the back washing water for cleaning the filter layer and then convey the back washing water to the flocculation tank for purification treatment, thereby saving water source and avoiding the pollution of water environment caused by the discharge of the back washing water.

Scheme two, this is the preferred of basic scheme, the drainage unit includes water pump and drinking-water pipe, the one end of drinking-water pipe and the end intercommunication of intaking of water pump, the other end of drinking-water pipe runs through the side of header tank to inside extending to the header tank, the play water end intercommunication of water pump has the drain pipe.

And a third scheme is preferable to the second scheme, and the inner side of the bottom end of the filter box is a concave surface. The bottom end of the filter box is arranged to be a concave surface, so that filtered raw water can be conveniently discharged from the water outlet pipe.

Scheme four, this is the preferred of scheme two, filtering mechanism still includes first unit of scrubbing, first unit of scrubbing includes pivot, motor and two first brush boards, the top and the motor of pivot are connected, the top of rose box is run through to the bottom of pivot to extend to the inside of rose box, two first brush board all with the bottom rigid coupling of pivot, two first brush board is symmetrical about the axis of pivot, two the bottom of first brush board all is equipped with the brush hair that is used for scrubbing the filter bed top. When the filter layer filters raw water, the top end of the filter layer can cover a lot of impurities to shield the filter layer, so that the filtering effect of the filter layer is influenced, and the scheme can brush the impurities covering the top end of the filter layer by arranging the first brushing unit, so that the impurities can float in water; when cleaing away the impurity on filtering layer top, starter motor, the motor drives the pivot and rotates, and the pivot is rotated and is driven first brush board and rotate, and meanwhile, first brush board drives first brush hair and brushes the accumulational impurity in filtering layer top, makes impurity float and aquatic to avoid impurity to pile up on the top of filtering layer, cause the filtering layer to block up, make the filter effect of filtering layer reduce.

Preferably, in the fifth aspect, a scraper is disposed at the top end of the filtering layer. The top end of the filter layer is provided with a scraper blade which can scrape off impurities adhered to the first brush hair.

According to a sixth scheme, the fifth scheme is preferable, a second brushing unit used for brushing the side wall of the filter box is arranged on the rotating shaft, the second brushing unit comprises a connecting rod and two second brush plates, the two second brush plates are fixedly connected with the rotating shaft through connecting plates respectively, the two second brush plates are symmetrical about the axis of the rotating shaft, and second bristles are arranged on one sides, facing the inner wall of the filter box, of the two second brush plates. After raw water enters the filter tank, impurities in the raw water can be adhered to the inner wall of the filter tank, so that the impurities adhered to the inner wall of the filter tank can be brushed off by arranging the second brushing unit; the specific working process of brushing the inner wall of the filter box is that the rotating shaft drives the second brush bristles on the second brush plate to brush off impurities adhered to the inner wall of the filter box.

And a seventh scheme is the preferable scheme of the sixth scheme, and the side surface of the water collecting tank is communicated with a sewage discharge pipe. The side surface of the water collecting tank is provided with a drain pipe, so that the filtered impurities in the water collecting tank can be discharged in time.

And a scheme eight is the optimization of the scheme seven, a boss is arranged on the inner side of the bottom end of the water collecting tank and is positioned right below the back flushing water outlet pipe, and one end of the boss is abutted to the filter screen. The bottom end of the water collecting tank is provided with a boss, so that the back washing water discharged by the back washing water outlet pipe can conveniently flow into the left side of the filter screen.

Drawings

FIG. 1 is a schematic view showing the construction of a backwash water reuse apparatus according to the present invention;

Detailed Description

The present invention will be described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a filter box 1, a water outlet pipe 2, a first valve 3, a back flushing water inlet pipe 4, a second valve 5, a filter layer 6, a scraping plate 7, a first brush plate 8, first bristles 9, a rotating shaft 10, a connecting rod 11, a second brush plate 12, second bristles 13, a water inlet pipe 14, a motor 15, a back flushing water outlet pipe 16, a third valve 17, a water collecting tank 18, a sewage discharge pipe 19, a filter screen 20, a boss 21, a water pumping pipe 22, a water pump 23 and a water drainage pipe 24.

Examples

As shown in fig. 1: the backwashing water recycling device comprises a filtering mechanism and a water collecting mechanism for collecting backwashing water, wherein the filtering mechanism comprises a filtering box 1, a first brushing unit and a filtering layer 6 arranged at the bottom end of the filtering box 1, the inner side of the bottom end of the filtering box 1 is a concave surface, the bottom end of the filtering box 1 is communicated with a water outlet pipe 2, the water outlet pipe 2 is communicated with a backwashing water inlet pipe 4, the water outlet pipe 2 is provided with a first valve 3, the backwashing water inlet pipe 4 is provided with a second valve 5, the first brushing unit comprises a rotating shaft 10, a motor 15 and two first brushing plates 8, the top end of the rotating shaft 10 is connected with the motor 15, the bottom end of the rotating shaft 10 penetrates through the top end of the filtering box 1 and extends into the filtering box 1, the rotating shaft 10 is rotatably connected with the top end of the filtering box 1 through a bearing, the two first brushing plates 8 are fixedly connected with the bottom end of the rotating shaft 10, the two first brushing plates 8 are symmetrical about the axis of the rotating shaft 10, and the bottom ends of the two first brushing plates 8 are provided with bristles for brushing the top end of the filtering layer 6, the top end of the filtering layer 6 is provided with a scraper 7; the rotating shaft 10 is provided with a second brushing unit for brushing the side wall of the filter box 1, the second brushing unit comprises a connecting rod 11 and two second brush plates 12, the two second brush plates 12 are fixedly connected with the rotating shaft 10 through the connecting plate respectively, the two second brush plates 12 are symmetrical about the axis of the rotating shaft 10, and one sides of the two second brush plates 12 facing the inner wall of the filter box 1 are provided with second bristles 13; the top end of the filter box 1 is communicated with a water inlet pipe 14, the side surface of the filter box 1 is communicated with a back flushing water outlet pipe 16, and a third valve 17 is arranged on the back flushing water outlet pipe 16.

The water collecting mechanism comprises a water collecting tank 18, a filter screen 20 and a drainage unit for discharging back washing water in the water collecting tank 18, the free end of a back washing water outlet pipe 16 is communicated with the water collecting tank 18, the filter screen 20 is vertically arranged in the water collecting tank 18, the side surfaces of the filter screen 20 are fixedly connected with the inner wall of the water collecting tank 18, the side surface of the water collecting tank 18 is communicated with a drainage pipe 19, the inner side of the bottom end of the water collecting tank 18 is provided with a boss 21, the boss 21 is positioned under the back washing water outlet pipe 16, and one end of the boss 21 is abutted against the filter screen 20; the drainage unit comprises a water pump 23 and a water pumping pipe 22, one end of the water pumping pipe 22 is communicated with the water inlet end of the water pump 23, the other end of the water pumping pipe 22 penetrates through the side face of the water collecting tank 18 and extends into the water collecting tank 18, and a water outlet end of the water pump 23 is communicated with a water drainage pipe 24 which is used for conveying backwashing water to the flocculation tank.

The implementation manner of the embodiment is as follows: when filtering the raw water after the flocculation basin is handled, the raw water passes through inlet tube 14 and gets into in the rose box 1, then the raw water filters through filtering layer 6, discharge from outlet pipe 2 afterwards, at the in-process of filtering the raw water of filtering layer 6, motor 15 drives pivot 10 and rotates, pivot 10 rotates and drives first brush board 8 and rotate, and meanwhile, first brush board 8 drives first brush hair 9 and brushes the accumulational impurity in filtering layer 6 top, make impurity float and aquatic, thereby avoid impurity to pile up on the top of filtering layer 6, cause filtering layer 6 to block up, and when pivot 10 rotates, can drive the impurity brush of adhesion on second brush hair 13 on the second brush board 12 with rose box 1 inner wall.

When the filtering layer 6 needs to be cleaned after being filtered for a period of time, the first valve 3 is closed, the second valve 5 and the third valve 17 are opened, then back washing water is introduced into the filtering tank 1 through the back washing water inlet pipe 4, the back washing water entering the filtering tank 1 can wash impurities in the filtering layer 6 out of the filtering layer 6 and enters the water collecting tank 18 along with the back washing water, the back washing water entering the water collecting tank 18 flows to the left side of the filtering screen 20 after being filtered by the filtering screen 20, then the back washing water on the left side of the filtering screen 20 is conveyed to the flocculation tank for continuous treatment through the water pump 23 and the water pumping pipe 22 and the water drainage pipe 24 in sequence, so that the back washing water is purified into clear water, and water source waste is avoided.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The backwashing water recycling device is characterized by comprising a filtering mechanism and a water collecting mechanism for collecting backwashing water, wherein the filtering mechanism comprises a filtering box and a filtering layer arranged at the bottom end of the filtering box, the top end of the filtering box is communicated with a water inlet pipe, the bottom end of the filtering box is communicated with a water outlet pipe, the water outlet pipe is communicated with a backwashing water inlet pipe, the water outlet pipe is provided with a first valve, the backwashing water inlet pipe is provided with a second valve, the side surface of the filtering box is communicated with a backwashing water outlet pipe, the backwashing water outlet pipe is provided with a third valve, the water collecting mechanism comprises a water collecting tank, a filter screen and a drainage unit for discharging backwashing water in the water collecting tank, the free end of the backwashing water outlet pipe is communicated with the water collecting tank, the filter screen is vertically arranged in the water collecting tank, and the side surface of the filter screen is fixedly connected with the inner wall of the water collecting tank.

2. The backwashing water recycling device of claim 1, wherein the drainage unit comprises a water pump and a water pumping pipe, one end of the water pumping pipe is communicated with a water inlet end of the water pump, the other end of the water pumping pipe penetrates through the side surface of the water collecting tank and extends into the water collecting tank, and a water outlet end of the water pump is communicated with a drain pipe.

3. The backwash water reuse apparatus according to claim 2, wherein the inside of the bottom end of the filter tank is concave.

4. The backwashing water recycling device of claim 2, wherein the filtering mechanism further comprises a first brushing unit, the first brushing unit comprises a rotating shaft, a motor and two first brush plates, the top end of the rotating shaft is connected with the motor, the bottom end of the rotating shaft penetrates through the top end of the filtering box and extends into the filtering box, the two first brush plates are fixedly connected with the bottom end of the rotating shaft, the two first brush plates are symmetrical about the axis of the rotating shaft, and the bottom ends of the two first brush plates are provided with bristles for brushing the top end of the filtering layer.

5. The backwash water reuse device according to claim 4, wherein a scraper is provided at the top end of the filter layer.

6. The backwashing water recycling device of claim 5, wherein the rotating shaft is provided with a second brushing unit for brushing the side wall of the filter tank, the second brushing unit comprises a connecting rod and two second brush plates, the two second brush plates are respectively fixedly connected with the rotating shaft through the connecting plate, the two second brush plates are symmetrical about the axis of the rotating shaft, and one sides of the two second brush plates facing the inner wall of the filter tank are provided with second bristles.

7. The backwashing water recycling device of claim 6, wherein a drain pipe is communicated with a side surface of the water collecting tank.

8. The backwashing water recycling device of claim 7, wherein a boss is arranged at the inner side of the bottom end of the water collecting tank, the boss is positioned under the backwashing water outlet pipe, and one end of the boss abuts against the filter screen.