CN213433139U

CN213433139U - Sand washing device of moving bed filter

Info

Publication number: CN213433139U
Application number: CN202021820317.7U
Authority: CN
Inventors: 彭继伟; 杨宗雷; 冯梅; 邓猛
Original assignee: Wuhan Sentai Environmental Protection Co ltd
Current assignee: Wuhan Sentai Environmental Protection Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-06-15
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a sand washing device of a moving bed filter, which comprises a sewage collecting cylinder, a sand washer, an air stripping pipeline and a flow guide ball; the sand washer is arranged in the sewage collecting barrel, a sewage discharge cavity is formed by the inner wall of the sewage collecting barrel and the outer wall of the sand washer, the interior of the sand washer is communicated with the sewage discharge cavity through a sewage guide pipe, and a sewage discharge pipe is arranged at the bottom of the sewage collecting barrel; the air stripping pipeline is arranged in the sand washer, the top end of the air stripping pipeline is positioned at the upper half part of the sand washer, and the bottom end of the air stripping pipeline is used for pumping the filter material of the filter into the air stripping pipeline; the diversion ball is arranged in the sand washer and is positioned right above the air stripping pipeline; the technical problems that the traditional sand washing and loading in the prior art is serious in sand running, so that a pipeline is blocked, equipment is abraded, the filtering effect is influenced, and frequent sand supplement is needed are solved.

Description

Sand washing device of moving bed filter

Technical Field

The utility model relates to a sand washing device technical field, concretely relates to remove sand washing device of bed filter.

Background

The moving bed filter technology is a novel filtering technology applied to the water treatment industry, removes particles, suspended matters, biological membranes, colloidal substances and the like in water through filter materials, can clean the filter materials without stopping the machine during filtering, ensures the continuous and stable operation of a filtering device, and achieves the purpose of improving the quality of outlet water. The working process is as follows: water to be filtered enters from the middle lower part of the filter, the water flows upwards, the filter material moves downwards, suspended matters or colloid substances in the water are intercepted by the filter material and purified when sewage passes through the filter material layer, and the filtered water rises to the upper part of the filter and is discharged by a clear water pipe; the filter material with suspended matters or colloid matters adsorbed and intercepted on the surface moves to the bottom of the filter from top to bottom, then the filter material at the bottom is lifted to a sand washer at the upper part of the filter along a sand lifting pipe by pressure difference generated by an air lifting device for cleaning, and the cleaned filter material returns to the upper part of the filter, thereby completing the circulation process of the filter material.

The outlet of the air stripping pipe of the traditional sand washing device of the moving bed filter is not provided with an effective energy dissipation and three-phase separation device, sand leakage is serious, and because the flow velocity of sand, water and gas three-phase mixed media at the outlet of the air stripping riser is large, large impact force is formed, so that part of sand is lost along with sand washing water and cannot be fully recovered. The consequences of sand leakage are pipeline blockage, equipment abrasion, influence on the filtering effect and frequent sand replenishment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a sand washing device of moving bed filter, it is serious to solve traditional sand washing dress among the prior art and run sand, leads to the pipeline to block up, and equipment wear influences the filter effect, and needs the technical problem of frequent mend sand.

In order to achieve the technical purpose, the technical scheme of the utility model provides a sand washing device of a moving bed filter, which comprises a sewage collecting cylinder, a sand washer, an air stripping pipeline and a flow guide ball; the sand washer is arranged in the sewage collecting barrel, a sewage discharge cavity is formed by the inner wall of the sewage collecting barrel and the outer wall of the sand washer, the interior of the sand washer is communicated with the sewage discharge cavity through a sewage guide pipe, and a sewage discharge pipe is arranged at the bottom of the sewage collecting barrel; the air stripping pipeline is arranged in the sand washer, the top end of the air stripping pipeline is positioned at the upper half part of the sand washer, and the bottom end of the air stripping pipeline is used for pumping the filter material of the filter into the air stripping pipeline; the flow guide ball is arranged in the sand washer and is positioned right above the air stripping pipeline.

Compared with the prior art, the beneficial effects of the utility model include: through the water conservancy diversion ball that sets up the air stripping pipeline directly over, the filter material striking that makes the air stripping pipeline come out is on the water conservancy diversion ball to in falling into the sand washer along all around, prevent because of rivers are too big, lead to the filter material directly to wash to the sewage collecting cylinder in, prevent to run sand, effectually avoided because of the pipe jam, the equipment wearing and tearing that run sand and lead to, influence filterable problem.

Drawings

Fig. 1 is a schematic structural diagram of the whole in the embodiment of the present invention;

FIG. 2 is a schematic structural view of a conical baffle ring according to an embodiment of the present invention;

fig. 3 is a schematic diagram of the operation of the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the utility model provides a sand washing device of moving bed filter, including sewage collection cylinder 100, sand washer 200, air stripping pipeline 300 and water conservancy diversion ball 400, during the implementation, air stripping pipeline 300 inhales the filter material (grit) of filter 500 bottom wherein to wash in leading-in sand washer 200, at the in-process that enters into sand washer 200 from air stripping pipeline 300, the filter material can strike on the divertor, prevents that the filter material from entering into sewage collection cylinder 100 along with rivers, drops back again in filter 500 from sand washer 200 through the filter material after the striking, thereby reaches the function of preventing running sand, next more detailed explanation carries out.

The sand washer 200 in this embodiment is arranged in the sewage collecting cylinder 100, the inner wall of the sewage collecting cylinder 100 and the outer wall of the sand washer 200 form a sewage drainage cavity 110, the inside of the sand washer 200 is communicated with the sewage drainage cavity 110 through a sewage guide pipe 120, and the bottom of the sewage collecting cylinder 100 is provided with a sewage drainage pipe 130; the air stripping pipeline 300 is arranged in the sand washer 200, the top end of the air stripping pipeline 300 is positioned at the upper half part of the sand washer 200, and the bottom end of the air stripping pipeline 300 is used for pumping the filter material of the filter 500 into the air stripping pipeline; the diversion ball 400 is arranged in the sand washer 200 and is positioned right above the air stripping pipeline 300

In operation, as shown in FIG. 3, air stripping line 300 draws filter media from the bottom of filter 500 into sand washer 200 as it exits the top end of air stripping line 300. Because the filter material receives the ascending power of rivers and can continue upward movement, through setting up the water conservancy diversion ball 400 directly over the top of air lift pipeline 300 this moment, the filter material striking is on water conservancy diversion ball 400 to drop all around to in sand washer 200, sand washer 200 washs the filter material, and the filter material after the washing drops again in filter 500, and the foreign matter that washs simultaneously suspends to sand washer 200's top, and lead to in the blowdown cavity 110 of sewage collection cylinder 100 through leading dirty pipe 120, and discharge through blow off pipe 130.

In order to ensure that all the filtering materials from the gas stripping pipeline 300 impact on the flow guiding ball 400, the diameter of the flow guiding ball 400 in this embodiment is larger than that of the gas stripping pipeline 300.

In order to make the sand washing effect of the sand washer 200 better, the sand washer 200 in this embodiment includes a housing 210, a stacked triangular conical ring 220 and a conical baffling ring 230, the housing 210 is disposed in the sewage collecting cylinder 100, a sewage draining cavity 110 is formed between an outer wall of the housing 210 and an inner wall of the sewage collecting cylinder 100, a sewage guiding pipe 120 is installed on a side wall of the housing 210, an air lifting pipeline 300 is coaxially disposed in the housing 210, the stacked triangular conical ring 220 and the conical baffling ring 230 are coaxially sleeved on the air lifting pipeline 300, and a zigzag type sand washing seam is formed between the stacked triangular conical ring 220 and the conical baffling ring 230.

Wherein, when the filter material washed the sand seam through the broken line type, through the route that changes the perpendicular whereabouts of filter material, made the filter material advance along the broken line type route, can effectual assurance filter material with pile up triangle cone ring 220 and toper baffling ring 230 between the multiple impact to make the effective separation between the foreign matter of grit and adhesion above that.

Further, the surfaces of the stacked triangular conical rings 220 and the stacked triangular conical rings 220 are both subjected to sanding treatment, so that the friction force is increased.

As shown in fig. 2, the number of the conical deflecting rings 230 may be two, one of the conical deflecting rings 230 is coaxially sleeved on the outer wall of the stripping pipeline 300, the other conical deflecting ring 230 is coaxially sleeved on the inner wall of the sand washer 200, and both the two conical deflecting rings 230 and the stacked triangular conical rings 220 form a zigzag sand washing gap.

The housing 210 in this embodiment is a circular variable cross-section, and has an upper through hole and a lower through hole, a large diameter at the upper end, a small diameter at the middle part, a tapered transition at the middle part, and a folded bellows at the lower end.

In order to make the sewage draining effect of the sand washer 200 better, a plurality of through holes are uniformly formed on the top end of the housing 210 in the embodiment along the circumferential direction, and each through hole is provided with a sewage conduit 120.

In this embodiment, the air lifting pipeline 300 includes a liquid lifting pipe 310, an air pipe 320 and an air pump (not shown), the liquid lifting pipe 310 is disposed in the sand washer 200, the guiding ball 400 is located right above the liquid lifting pipe 310, the air pipe 320 is coaxially disposed in the liquid lifting pipe 310, the top end of the air pipe 320 passes through the guiding ball 400 and is communicated with the air outlet pipe 320 of the air pump, and the bottom end of the air pipe 320 extends into the bottom of the filter 500.

The air pipe 320 is ventilated by the air pump, and the filter material at the bottom of the filter 500 is lifted to the upper part of the sand washer 2002 by the lift pipe 310.

Compared with the prior art, this embodiment is through the water conservancy diversion ball 400 that sets up air stripping pipeline 300 directly over, makes air stripping pipeline 300 play the filter material striking on water conservancy diversion ball 400 to along falling into sand washer 200 all around, prevent because of rivers are too big, lead to the filter material directly to wash into sewage collecting cylinder 100, prevent to run the sand, effectually avoided because of running pipe jam, equipment wearing and tearing, the filterable problem of influence that the sand leads to.

Simultaneously, form broken line type sand washing seam through piling up between triangle awl ring 220 and the toper baffling ring 230, change the perpendicular whereabouts of filter material and be along the whereabouts of broken line type direction, the in-process of whereabouts, the filter material with pile up and take place striking and friction between triangle awl ring 220 and the toper baffling ring 230, make the effective separation between the filter material and the impurity of adhesion on it, the sand washing effect is better.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A sand washing device of a moving bed filter is characterized by comprising:

a sewage collection cylinder;

the sand washer is arranged in the sewage collecting barrel, a sewage discharge cavity is formed by the inner wall of the sewage collecting barrel and the outer wall of the sand washer, the interior of the sand washer is communicated with the sewage discharge cavity through a sewage guide pipe, and a sewage discharge pipe is arranged at the bottom of the sewage collecting barrel;

the air stripping pipeline is arranged in the sand washer, the top end of the air stripping pipeline is positioned at the upper half part of the sand washer, and the bottom end of the air stripping pipeline is used for pumping the filter material of the filter into the air stripping pipeline;

and the flow guide ball is arranged in the sand washer and is positioned right above the air stripping pipeline.

2. The sand washing device for the moving bed filter according to claim 1, wherein the diameter of the flow guide ball is larger than the diameter of the gas stripping pipeline.

3. The sand washing device of the moving bed filter according to claim 1, wherein the sand washer comprises a housing, a stacked triangular conical ring and a conical baffling ring, the housing is arranged in the sewage collecting cylinder, a sewage discharge cavity is formed between the outer wall of the housing and the inner wall of the sewage collecting cylinder, a sewage guide pipe is mounted on the side wall of the housing, the air stripping pipeline is coaxially arranged in the housing, the stacked triangular conical ring and the conical baffling ring are coaxially sleeved on the air stripping pipeline, and a zigzag type sand washing baffling seam is formed between the stacked triangular conical ring and the conical baffling ring.

4. The sand washing device for the moving bed filter according to claim 3, wherein the housing has a circular variable cross section, upper and lower through holes, a large diameter at the upper end, a small diameter at the middle part, a tapered transition at the middle part, and a corrugated bellows at the lower end.

5. The sand washing device for the moving bed filter according to claim 3, wherein a plurality of through holes are uniformly formed in the top end of the housing along the circumferential direction of the housing, and a sewage guide pipe is installed on each through hole.

6. The sand washing device of a moving bed filter as claimed in claim 1, wherein the air stripping pipeline comprises a liquid lifting pipe, an air pipe and an air pump, the liquid lifting pipe is arranged in the sand washer, the diversion ball is positioned right above the liquid lifting pipe, the air pipe is coaxially arranged in the liquid lifting pipe, the top end of the air pipe passes through the diversion ball and is communicated with an air outlet pipe of the air pump, and the bottom end of the air pipe extends into the bottom of the filter.