CN209778526U - rainwater pretreatment device - Google Patents

Abstract

The utility model discloses a processing apparatus before rainwater, floater filtering device sets up the floater filtering net by crank drive slope up-and-down motion in the rivers passageway including the slope, rotate in this floater filtering net top and set up the floater scraper, one-level membrane filtering part and second grade membrane filtering part all include the membrane frame that rotates the setting, quantity array such as the membrane frame is gone up arranges one-level membrane filtration body and second grade membrane filtration body, equidistant dislocation arrangement of second grade membrane filtration body on one-level membrane filtration body and the second grade membrane frame on one-level membrane frame, one-level membrane filters the body and clamps in second grade membrane frame and clamps the second grade membrane filtration body in one-level membrane frame when one-level membrane frame and second grade membrane frame syntropy rotate. The utility model discloses a pretreatment device before rainwater cleans the floater totally through floater filtering net and floater scaler, and the automatic more position of replacement of one-level membrane filtration body and second grade membrane filtration body continues to use, has improved filtration membrane's utilization ratio and the efficiency that the rainwater was handled.

Description

Rainwater pretreatment device

Technical Field

the utility model belongs to the water treatment facilities field especially relates to a processing apparatus before rainwater.

background

urban rainwater can be used to many fields such as life, industry, sanitation after collecting the processing, but the rainwater after collecting floats debris more, still carries a large amount of filths, and processing load is big, does not have effective, convenient rainwater pretreatment system at present.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior art problem, the utility model provides a processing apparatus before rainwater.

The utility model is realized in such a way that the rainwater pretreatment device comprises a floater filtering device, a flocculation box, a primary filtering box, a sedimentation box and a membrane filtering device which are arranged in a butt joint way, rainwater floaters discharged from the upstream are removed at the floater filtering device, and fine filtering is carried out at the membrane filtering device after flocculation, primary filtering and sedimentation;

the floater filtering device comprises a floater filtering net which is obliquely arranged in the water flow channel and driven by a crank to move up and down, a floater scraper is rotatably arranged at the top of the floater filtering net, the floater is taken out of the water surface when the floater filtering net moves obliquely upwards, and the floater scraper rotates to remove the floater;

in order to improve the filtering effect, the membrane filtering device adopts two-stage filtering, the first-stage membrane filtering part and the second-stage membrane filtering part respectively comprise a rotatably arranged membrane frame to drive the membrane filtering bodies to rotate, the first-stage membrane filtering bodies and the second-stage membrane filtering bodies are arranged in an equal-number array on the membrane frame, the first-stage membrane filtering bodies on the first-stage membrane frame and the second-stage membrane filtering bodies on the second-stage membrane frame are arranged in a staggered mode at equal intervals, and the first-stage membrane filtering bodies are clamped on the second-stage membrane frame and the second-stage membrane filtering bodies are clamped on the first-stage membrane frame when the first-stage membrane frame and the second-stage membrane frame rotate in;

In order to judge the use condition of the filtering membrane according to the water level in the membrane filtering tank and realize automatic replacement of the filtering membrane body, the top of the membrane filtering tank is provided with a floater, the top of the floater is provided with a contact switch which is electrically connected with a membrane frame driving motor, the passing rate becomes poor when the filtering membrane body is seriously blocked, the water level in the membrane filtering tank rises, the floater floats upwards to trigger the contact switch to act and switch on the power supply of the membrane frame driving motor, the membrane frame is driven to rotate, and the automatic replacement of new and old membrane filtering bodies is realized;

In order to improve the filtering effect of floaters, the front part and the rear part of the floaters filtering net are provided with two parts, two cranks are driven by chain wheels, a crank drives a sliding block to slide along a sliding chute which is obliquely arranged, and the floaters filtering net is arranged on the sliding block.

In order to prevent the front and the rear filter screens from having filtering blind areas or drain areas, the front and the rear filter screens synchronously move reversely along the sliding chute, and when the front filter screen moves upwards, the rear filter screen moves downwards, so that at least one filter screen is always ensured to filter in the water flow channel;

The floater scraper comprises a scraping brush driven by a scraper motor to rotate so as to conveniently clean the floaters on the floater filtering net;

The flocculation case includes along the first flocculation case and the second flocculation case of rivers advancing direction butt joint setting, adopts two flocculating constituents machine to improve the flocculation effect, and quick flocculating constituent machine is installed to first flocculation case, installs the slow flocculating constituent machine in the second flocculation incasement.

For guaranteeing that one-level membrane filtration body and second grade membrane filtration body can change smoothly, one-level membrane filtration body hangs the dress in one-level membrane frame through having the pothook on open-top, and second grade membrane filtration body hangs the dress in second grade membrane frame through having pothook under the open bottom, and pothook under the installation between two adjacent one-level membrane filtration bodies installs the pothook between two adjacent second grade membrane filtration bodies, and the membrane filtration body switches through the opening on the pothook and hangs the dress.

the utility model discloses a pretreatment device before rainwater cleans the floater totally through floater filtering net and floater scaler, and the automatic more position of replacement of one-level membrane filtration body and second grade membrane filtration body continues to use, has improved filtration membrane's utilization ratio and the efficiency that the rainwater was handled.

drawings

Fig. 1 is a schematic structural view of a rainwater pretreatment device provided in an embodiment of the present invention;

Fig. 2 is a schematic view illustrating installation of the primary upper hook and the primary membrane filtering body according to the embodiment of the present invention;

fig. 3 is a schematic view illustrating an installation of the second-stage lower hook and the second-stage membrane filtering body according to an embodiment of the present invention;

in the figure: 1. a water flow channel; 2. a float filtering device; 2-1, a first chute; 2-2, a first slide block; 2-3, a first connecting rod; 2-4, a first crank; 2-5, filtering out a net by using a first floating object; 2-6, a first scraping brush; 2-7, a first scraper motor; 2-8, a chain; 2-9, a second chute; 2-10, filtering out a second floating object net; 2-11, a second scraping brush; 2-12, a second scraper motor; 2-13, a second slide block; 2-14, a second connecting rod; 2-15, a second crank; 2-16, a second sprocket; 2-17, a first sprocket; 3. a flocculation tank; 3-1, a first flocculation tank; 3-2, a quick flocculating machine; 3-3, a second flocculation tank; 3-4, a slow flocculating machine; 4. a settling tank; 5. a primary filter box; 5-1, primary filtering box; 5-2, primary filter membrane group; 6. a membrane filtration device; 6-1, a primary membrane filtration body; 6-2, a first-level upper clamping hook; 6-3, a primary membrane frame; 6-4, a first-level lower hook; 6-5, a secondary membrane filtration body; 6-6, a two-stage lower hook; 6-7, a secondary membrane frame; 6-8, a secondary upper hook; 7. a float.

Detailed Description

in order to further understand the contents, features and functions of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

The structure of the present invention will be described in detail with reference to the accompanying drawings.

The utility model discloses a rainwater pretreatment device, which comprises a floater filtering device 2, a flocculation tank 3, a primary filter tank 5, a sedimentation tank 4 and a membrane filtering device 6 which are arranged in a butt joint way, wherein the sedimentation tank 4 plays a role in settling silt, and the purpose of the flocculation tank 3 is to flocculate rainwater and facilitate the sedimentation in the sedimentation tank 4; the primary filter box 5 is used for receiving overflow water on the upper part of the settling tank 4, a primary filter membrane group 5-2 is arranged in a primary filter box body 5-1 of the primary filter box 5, and coarse filtration is carried out through the primary filter membrane group 5-2.

The floater filtering device 2 comprises a first floater filtering net 2-5 and a second floater filtering net 2-10 which are obliquely arranged in a water flow channel back and forth and driven to move up and down by a crank, a first chain wheel 2-17 and a second chain wheel 2-16 which are arranged on the outer side of the water flow channel 1 are driven by a chain 2-8, the first chain wheel 2-17 drives a first crank 2-4 and a first connecting rod 2-3, a first slide block 2-2 slides up and down in an obliquely arranged first sliding groove 2-1, the second chain wheel 2-16 drives a second crank 2-15 and a second connecting rod 2-14, a second slide block 2-13 slides up and down in an obliquely arranged second sliding groove 2-9, the first slide block 2-2 and the second slide block 2-13 synchronously move in opposite directions, and the first slide block 2-2 in front drives a second floater filtering net behind when the first floater filtering net 2-5 moves up The slide block 2-13 drives the second floating object filtering net 2-10 to move downwards, so that at least one filtering net is always ensured to be positioned in the water flow channel 1 for filtering;

A floater scraping device is rotatably arranged at the top of the floater filtering net, the first floater filtering net 2-5 and the second floater filtering net 2-10 carry floaters out of the water surface when moving upwards in an inclined manner, and a first scraping brush 2-6 and a second scraping brush 2-11 are respectively driven by a first scraping motor 2-7 and a second scraping brush motor 2-12 to rotate, so that floaters on the floater filtering nets can be conveniently cleaned, and the working efficiency of rainwater pretreatment is improved;

The flocculation tank 3 comprises a first flocculation tank 3-1 and a second flocculation tank 3-3 which are arranged in a butt joint mode along the advancing direction of water flow, two flocculation machines are adopted to improve the flocculation effect, the first flocculation tank 3-1 is provided with a quick flocculation machine 3-2, and the second flocculation tank 3-3 is internally provided with a slow flocculation machine 3-4;

the membrane filtering device adopts two-stage filtering, the first-stage membrane filtering part and the second-stage membrane filtering part respectively comprise a membrane frame which is rotationally arranged to drive the membrane filtering bodies to rotate, the first-stage membrane filtering bodies 6-1 and the second-stage membrane filtering bodies 6-5 are arranged in an equal-number array on the membrane frame, the first-stage membrane filtering bodies 6-1 on the first-stage membrane frame 6-3 and the second-stage membrane filtering bodies 6-5 on the second-stage membrane frame 6-7 are arranged in an equidistant staggered manner, the first-stage membrane filtering bodies 6-1 are clamped on the second-stage membrane frame 6-7 and the second-stage membrane filtering bodies 6-5 are clamped on the first-stage membrane frame 6-3 when the first-stage membrane frame 6-3 and the second-stage membrane frame 6-7 rotate in the same direction, so as to realize the:

The upper clamping hook is provided with an opening at the top, the lower clamping hook is provided with an opening at the bottom, the primary membrane filtering body 6-1 is hung on the primary membrane frame 6-3 through the primary upper clamping hook 6-2 with an opening at the top, the secondary membrane filtering body 6-5 is hung on the secondary membrane frame 6-7 through the secondary lower clamping hook 6-6 with an opening at the bottom, the primary lower clamping hook 6-4 is arranged between two adjacent primary membrane filtering bodies 6-1, and the secondary upper clamping hook 6-8 is arranged between two adjacent secondary membrane filtering bodies 6-5;

the primary membrane filtering part and the secondary membrane filtering part are separated by a separating device, water flows into the secondary membrane filtering part after passing through the primary membrane filtering part, a floater 7 is installed at the top of a membrane filtering tank of the primary membrane filtering part, a contact switch electrically connected with a membrane frame driving motor is installed at the top of the floater 7, the passing rate is poor when the primary membrane filtering body 6-1 is seriously blocked, the water level in the membrane filtering tank rises, and the floater floats upwards to trigger the contact switch to act so as to switch on the power supply of the membrane frame driving motor and drive the membrane frame to rotate;

in this embodiment, four primary upper hooks 6-2, four primary lower hooks 6-4, four secondary upper hooks 6-8, and four secondary lower hooks 6-6 are provided, the hooks are elastic members, the hooks are provided with openings to facilitate the fastening of the membrane filtration body, in the case of the primary membrane filtration body 6-1, when the primary membrane frame 6-3 and the secondary membrane frame 6-7 are rotated in the same direction to the positions shown in fig. 1, the primary membrane filtration body 6-1 moves downward, the secondary upper hooks 6-8 move upward, the shafts at both ends of the primary membrane filtration body 6-1 are fastened to the secondary upper hooks 6-8 on the secondary membrane frame 6-7, the rotation is continued to fasten the secondary membrane filtration body 6-5 to the primary membrane frame 6-3, and the cycle is repeated so that the primary membrane filtration body 6-1 is completely replaced and mounted on the secondary membrane frame 6-7, the secondary membrane filtering body 6-5 is arranged on the primary membrane frame 6-3, the primary membrane filtering body 6-1 bears larger filtering work load during early work and is easy to be polluted and blocked, the primary membrane filtering body 6-1 and the secondary membrane filtering body 6-5 can be continuously used after being polluted and blocked, the transposition of the primary membrane filtering body 6-1 and the secondary membrane filtering body 6-5 is conveniently realized, the continuous work is kept, the utilization rate of a filtering membrane is improved, and the rainwater treatment efficiency is improved.

the above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims (6)

1. The utility model provides a rainwater pretreatment device, includes floater filtering device, flocculation case, smart filtering pond, setting tank, membrane filter equipment that the butt joint set up, its characterized in that:

The floater filtering device comprises a floater filtering net which is obliquely arranged in the water flow channel and driven by a crank to move up and down in an inclined mode, and a floater scraper is rotatably arranged at the top of the floater filtering net;

The membrane filtering device arranged in the membrane filtering tank comprises a primary membrane filtering part and a secondary membrane filtering part, wherein the primary membrane filtering part and the secondary membrane filtering part respectively comprise a rotatably arranged membrane frame, a primary membrane filtering body and a secondary membrane filtering body are arranged on the membrane frames in an equal number and array, the primary membrane filtering body on the primary membrane frame and the secondary membrane filtering body on the secondary membrane frame are arranged in a staggered mode at equal intervals, and the primary membrane filtering body is clamped in the secondary membrane frame and the secondary membrane filtering body is clamped in the primary membrane frame when the primary membrane frame and the secondary membrane frame rotate in the same direction;

the top of the membrane filtration tank is provided with a floater, and the top of the floater is provided with a contact switch electrically connected with the membrane frame driving motor.

2. The pretreatment device for rainwater according to claim 1, wherein two floating filtering nets are arranged in front of and behind the pretreatment device, two cranks are driven by chain wheels, the cranks drive sliding blocks to slide along the inclined sliding grooves, and the floating filtering nets are arranged on the sliding blocks.

3. the pretreatment device for rainwater according to claim 2, wherein the two floating filtering nets arranged in front and back synchronously move in opposite directions along the chute.

4. A rainwater pretreatment apparatus according to claim 3, wherein the float scraper includes a scraper brush driven to rotate by a scraper motor.

5. A rainwater pretreatment device according to claim 4, wherein the flocculation tank comprises a first flocculation tank and a second flocculation tank which are arranged in a butt joint mode along the advancing direction of water flow, the first flocculation tank is provided with a fast flocculating machine, and the second flocculation tank is internally provided with a slow flocculating machine.

6. The pretreatment apparatus for rainwater according to any one of claims 1 to 5, wherein the primary membrane filtration bodies are hung on the primary membrane frame by upper hooks having openings at the top, the secondary membrane filtration bodies are hung on the secondary membrane frame by lower hooks having openings at the bottom, the lower hooks are installed between two adjacent primary membrane filtration bodies, and the upper hooks are installed between two adjacent secondary membrane filtration bodies.