阅读说明：本技术 一种雨水收集中和再利用装置 (Rainwater collection, neutralization and recycling device ) 是由 马蕊 于 2020-06-01 设计创作，主要内容包括：一种雨水收集中和再利用装置,包括集水槽,所述集水槽收集路面的雨水,所述集水槽底部设有阀门,所述阀门下方固定设有初步过滤网,所述初步过滤网下方固定设有水管,所述水管右端固定设有更换箱,所述更换箱中设有更换腔,自动收集屋顶雨水,通过两次过滤滤除雨水中较大杂质以及微小杂质,雨水经过二次过滤时可通过前后雨水流速变化判断是否更换PP棉滤芯,过滤后的雨水经过本设备检测PH值根据测得PH值与雨水流速在消防储水腔中投入适量的中和剂中和雨水PH值,大大提高了雨水收集以及雨水中和的效率。(The utility model provides a rainwater is collected and is recycled device, includes the water catch bowl, the rainwater on road surface is collected to the water catch bowl, the water catch bowl bottom is equipped with the valve, the fixed prefilter screen that is equipped with in valve below, the fixed water pipe that is equipped with in prefilter screen below, the water pipe right-hand member is fixed to be equipped with more case, be equipped with the change chamber in the change case, automatic collection roof rainwater, through twice filtration filtering great impurity and small impurity in the rainwater, rainwater velocity of flow change around the accessible when secondary filters judges whether change the cotton filter core of PP, and rainwater after the filtration detects the PH value through this equipment and drops into in proper amount neutralizer and rainwater PH value in the fire control water storage chamber according to surveying PH value and rainwater velocity of flow, has improved rainwater collection and the efficiency in the rainwater greatly.)

1. The utility model provides a device in rainwater collection and recycle, includes the water catch bowl, the rainwater on road surface is collected to the water catch bowl, the water catch bowl bottom is equipped with the valve, the fixed prefilter screen that is equipped with in valve below, the fixed water pipe that is equipped with in prefilter screen below, the water pipe right-hand member is fixed to be equipped with changes the case, be equipped with in the change case and change the chamber, its characterized in that: a transmission shaft vertically penetrating through the replacement cavity is arranged in the replacement cavity, a replacement shaft is fixedly arranged on the transmission shaft, the left part and the right part of the replacement shaft can rotate, a filter element shell and a pp cotton filter element are symmetrically and fixedly arranged at the left end and the right end of the replacement shaft, a filter cavity is arranged in the pp cotton filter element, an output cavity is arranged between the pp cotton filter element and the filter element shell, the filter element shell at the left end extends into the water collection valve to filter rainwater through the pp cotton filter element, a butterfly valve shaft which horizontally penetrates through the water pipe and extends from the right end to the interior of the replacement cavity is rotatably arranged in the water pipe, a butterfly valve is fixedly arranged on a butterfly valve shaft in the water pipe, a flexible hose is arranged in the replacement cavity, a cleaning port capable of moving up and down is fixedly arranged at the lower end of the flexible hose, a transmission shaft is fixedly arranged at the lower; two flow velocity analyzers are fixedly arranged in the water pipe, each flow velocity analyzer comprises a rotating speed analyzer fixedly arranged on the outer wall of the left side of the water pipe, a speed measuring shaft which extends rightwards and penetrates through the water pipe leftwards and rightwards is rotatably arranged at the right end of each rotating speed analyzer, and four speed measuring sheets are fixedly arranged on the speed measuring shaft; a PH analysis cavity is fixedly arranged at the right end of the water pipe, a guide pipe which penetrates through the PH analysis cavity from top to bottom is arranged at the upper end of the PH analysis cavity, the right end of the guide pipe extends into the water pipe with an upward opening, the left end of the guide pipe extends into the PH analysis cavity from bottom to top, an even guide motor is fixedly arranged outside the top wall of the PH analysis cavity, a guide shaft which extends into the guide pipe and penetrates through the guide pipe from left to right is rotatably arranged at the right end of the guide motor, a guide ball is fixedly arranged on the guide shaft in the water pipe, a through hole which penetrates through the guide ball from top to bottom is arranged on the guide ball, a rotating motor is fixedly arranged on the top wall of the PH analysis cavity, a rotating shaft is rotatably arranged at the lower end of the rotating motor, a rotating plate is fixedly arranged at the lower end of the rotating shaft, test paper holes are symmetrically arranged, a paper feeding cam is fixedly arranged on the paper feeding shaft, a paper testing box is fixedly arranged on the right wall of the PH analysis cavity, PH test paper is stored in the test paper box, the paper feeding cam can push the PH test paper to be above the test paper hole, a test paper detection cavity fixed on the rear wall of the PH analysis cavity is arranged below the left test paper hole, and a test paper detector is fixedly arranged on the right wall of the test paper detection cavity; the fixed fire control water storage chamber that is equipped with of water pipe right-hand member, the fixed neutralizer chamber that is equipped with of fire control water storage chamber roof, the fixed right side that is equipped with of fire control water storage chamber right wall extends to the outside siphunculus that connects in fire control water storage chamber right side, connect the fixed conveyer pipe that is equipped with of siphunculus right-hand member, duct connection the bellows, conveyer pipe lower extreme external fixation is equipped with the flexible motor of promotion, the fixed flexible motor that is equipped with of promotion goes up to the inside promotion telescopic link of conveyer pipe, the fixed promotion slider that is equipped with in promotion telescopic link.

2. A rainwater collection neutralization and reuse apparatus according to claim 1, wherein: the fixed valve motor that is equipped with of change chamber roof, the rotatory driven shaft that is equipped with of valve motor lower extreme, the fixed backup pad that is equipped with on the change chamber left wall, the rotation of driven shaft lower extreme set up in the backup pad, the fixed drive gear that is equipped with on the transmission shaft, the fixed incomplete gear that is equipped with in the driven shaft mesh in drive gear, the fixed incomplete bevel gear of initiative that is equipped with on the driven shaft, the butterfly valve shaft right end is fixed be equipped with mesh in the butterfly valve bevel gear of incomplete bevel gear of initiative.

3. A rainwater collection neutralization and reuse apparatus according to claim 1, wherein: the automatic cleaning device is characterized in that a main motor is fixedly arranged on the rear wall of the replacement cavity, a gear shaft is rotatably arranged at the right end of the main motor, a sector gear and a bevel gear are fixedly arranged on the gear shaft, rotary gears located on the rotatable part of the replacement shaft are fixedly arranged below the bevel gear in a bilateral symmetry mode on the replacement shaft, a bevel gear shaft is rotatably arranged on the rear wall of the replacement cavity, the bevel gear shaft is fixedly arranged on the bevel gear shaft and meshed with the incomplete bevel gear, a limiting rod is fixedly arranged on the top wall of the replacement cavity, a pulley shaft is rotatably arranged on the limiting rod, the pulley shaft and the bevel gear shaft are in transmission to form a transmission belt pulley, a fixed rod is fixedly arranged at the left end of the cleaning opening, a lifting rack is fixedly arranged at the left end of the fixed rod.

4. A rainwater collection neutralization and reuse apparatus according to claim 1, wherein: a test paper telescopic motor is fixedly arranged on the upper wall of the PH analysis cavity, a test paper telescopic rod is fixedly arranged at the lower end of the test paper telescopic motor, a test paper spring groove is arranged in the test paper box, a test paper sliding plate is slidably arranged in the test paper spring groove, a test paper spring is connected between the bottom of the test paper sliding plate and the bottom wall of the test paper spring groove, and PH test paper is stacked at the upper end of the test paper sliding plate; the test paper detection device is characterized in that a baffle chute is arranged at the lower end of the test paper detection instrument, a test paper baffle extending leftwards into the test paper detection cavity is slidably arranged in the baffle chute, a baffle spring is connected between the right end of the test paper baffle and the right wall of the baffle chute, a winding motor cavity is arranged at the right end of the baffle chute, a winding motor is fixedly arranged in the winding motor cavity, a baffle stay cord extending leftwards and connected with the right end of the test paper baffle is arranged on the winding motor, a test paper recovery groove is fixedly arranged at the lower end of the test paper detection cavity, and a recovery guide pipe with an upper opening and a lower opening extending into the water pipe is fixedly.

5. A rainwater collection neutralization and reuse apparatus according to claim 1, wherein: the fixed flexible motor that is equipped with in on the neutralizer chamber right wall, the flexible motor right-hand member of neutralization is fixed and is equipped with the neutralization telescopic link, the fixed neutralization push pedal that is equipped with of neutralization telescopic link right-hand member, neutralizer chamber right-hand member be equipped with about run through in the drain tank of neutralizer chamber right wall, the water pipe with the fire control water storage chamber is connected between and is equipped with the water collecting valve door.

Technical Field

The invention relates to the technical field of rainwater collection and utilization, in particular to a rainwater collection, neutralization and reutilization device.

Background

China fire-fighting water mainly takes domestic drinking water, which runs counter to the current situation of water resource shortage in China, and how to find a new safe and sufficient fire-fighting water source to replace the domestic drinking water is urgent. The invention aims to save water and ensure the safety and reliability of fire-fighting water, reclaimed water, circulating cooling water and rainwater can be applied to fire-fighting facilities, but the reclaimed water, the circulating cooling water and the rainwater can be used for the fire-fighting water only when the water quality meets the PH value of 6.0-9.0 according to the regulation of urban miscellaneous water quality standard, and the average PH value of the rainwater in life is 5.6, so that the reclaimed water can be used as the fire-fighting water only after the rainwater is neutralized.

Disclosure of Invention

The invention aims to provide a rainwater collecting, neutralizing and recycling device, which overcomes the problems.

The invention is realized by the following technical scheme.

The invention relates to a rainwater collecting, neutralizing and recycling device, which comprises a water collecting tank, wherein the water collecting tank is used for collecting rainwater on a road surface, a valve is arranged at the bottom of the water collecting tank, a primary filter screen is fixedly arranged below the valve, a water pipe is fixedly arranged below the primary filter screen, a replacement box is fixedly arranged at the right end of the water pipe, a replacement cavity is arranged in the replacement box, a transmission shaft which vertically penetrates through the replacement cavity is arranged in the replacement cavity, a replacement shaft is fixedly arranged on the transmission shaft, the left and right parts of the replacement shaft can rotate, filter element shells and pp cotton filter elements are symmetrically and fixedly arranged at the left and right ends of the replacement shaft, a filter cavity is arranged in each pp cotton filter element, an output cavity is arranged between each two filter element shells, the filter element shell at the left end extends into the water collecting valve to filter rainwater through each pp cotton filter element, a butterfly valve shaft which horizontally penetrates through the water pipe and extends to the inside the replacement cavity is rotatably arranged in, a butterfly valve is fixedly arranged on a butterfly valve shaft in the water pipe, a telescopic hose is arranged in the replacing cavity, a cleaning opening capable of moving up and down is fixedly arranged at the lower end of the telescopic hose, a transmission shaft is fixedly arranged at the lower end of the replacing cavity, and a drain pipe is fixedly arranged at the right end of the transmission shaft; two flow velocity analyzers are fixedly arranged in the water pipe, each flow velocity analyzer comprises a rotating speed analyzer fixedly arranged on the outer wall of the left side of the water pipe, a speed measuring shaft which extends rightwards and penetrates through the water pipe leftwards and rightwards is rotatably arranged at the right end of each rotating speed analyzer, and four speed measuring sheets are fixedly arranged on the speed measuring shaft; a PH analysis cavity is fixedly arranged at the right end of the water pipe, a guide pipe which penetrates through the PH analysis cavity from top to bottom is arranged at the upper end of the PH analysis cavity, the right end of the guide pipe extends into the water pipe with an upward opening, the left end of the guide pipe extends into the PH analysis cavity from bottom to top, an even guide motor is fixedly arranged outside the top wall of the PH analysis cavity, a guide shaft which extends into the guide pipe and penetrates through the guide pipe from left to right is rotatably arranged at the right end of the guide motor, a guide ball is fixedly arranged on the guide shaft in the water pipe, a through hole which penetrates through the guide ball from top to bottom is arranged on the guide ball, a rotating motor is fixedly arranged on the top wall of the PH analysis cavity, a rotating shaft is rotatably arranged at the lower end of the rotating motor, a rotating plate is fixedly arranged at the lower end of the rotating shaft, test paper holes are symmetrically arranged, a paper feeding cam is fixedly arranged on the paper feeding shaft, a paper testing box is fixedly arranged on the right wall of the PH analysis cavity, PH test paper is stored in the test paper box, the paper feeding cam can push the PH test paper to be above the test paper hole, a test paper detection cavity fixed on the rear wall of the PH analysis cavity is arranged below the left test paper hole, and a test paper detector is fixedly arranged on the right wall of the test paper detection cavity; the fixed fire control water storage chamber that is equipped with of water pipe right-hand member, the fixed neutralizer chamber that is equipped with of fire control water storage chamber roof, the fixed right side that is equipped with of fire control water storage chamber right wall extends to the outside siphunculus that connects in fire control water storage chamber right side, connect the fixed conveyer pipe that is equipped with of siphunculus right-hand member, duct connection the bellows, conveyer pipe lower extreme external fixation is equipped with the flexible motor of promotion, the fixed flexible motor that is equipped with of promotion goes up to the inside promotion telescopic link of conveyer pipe, the fixed promotion slider that is equipped with in promotion telescopic link.

Further, it is equipped with the valve motor to change the fixed valve motor that is equipped with of chamber roof, the rotation of valve motor lower extreme is equipped with the driven shaft, it is equipped with the backup pad to change on the chamber left wall fixedly, the driven shaft lower extreme rotate set up in the backup pad, the fixed drive gear that is equipped with on the transmission shaft, fixed being equipped with on the driven shaft mesh in drive gear's incomplete gear, fixed incomplete bevel gear of initiative is equipped with on the driven shaft, the butterfly valve shaft right end is fixed be equipped with mesh in the butterfly valve bevel gear of incomplete bevel gear of.

Further, a main motor is fixedly arranged on the rear wall of the replacing cavity, a gear shaft is rotatably arranged at the right end of the main motor, a sector gear and a bevel gear are fixedly arranged on the gear shaft, rotary gears located on the rotatable part of the replacing shaft are fixedly arranged below the bevel gear in a bilateral symmetry mode on the replacing shaft, a bevel gear shaft is rotatably arranged on the rear wall of the replacing cavity, the bevel gear shaft is fixedly provided with a bevel gear meshed with the incomplete bevel gear, a limiting rod is fixedly arranged on the top wall of the replacing cavity, a belt pulley shaft is rotatably arranged on the limiting rod, a transmission belt pulley is arranged on the belt pulley shaft in a transmission mode, a fixed rod is fixedly arranged at the left end of the cleaning opening, a lifting rack is fixedly arranged at the left end of the fixed rod, and a lifting gear meshed with the lifting rack is fixedly arranged.

Further, a test paper telescopic motor is fixedly arranged on the upper wall of the PH analysis cavity, a test paper telescopic rod is fixedly arranged at the lower end of the test paper telescopic motor, a test paper spring groove is formed in the test paper box, a test paper sliding plate is slidably arranged in the test paper spring groove, a test paper spring is connected between the bottom of the test paper sliding plate and the bottom wall of the test paper spring groove, and PH test paper is stacked at the upper end of the test paper sliding plate; the test paper detection device is characterized in that a baffle chute is arranged at the lower end of the test paper detection instrument, a test paper baffle extending leftwards into the test paper detection cavity is slidably arranged in the baffle chute, a baffle spring is connected between the right end of the test paper baffle and the right wall of the baffle chute, a winding motor cavity is arranged at the right end of the baffle chute, a winding motor is fixedly arranged in the winding motor cavity, a baffle stay cord extending leftwards and connected with the right end of the test paper baffle is arranged on the winding motor, a test paper recovery groove is fixedly arranged at the lower end of the test paper detection cavity, and a recovery guide pipe with an upper opening and a lower opening extending into the water pipe is fixedly.

Further, fixed neutralization telescopic motor that is equipped with on the neutralizer chamber right wall, the fixed neutralization telescopic link that is equipped with of neutralization telescopic motor right-hand member, the fixed neutralization push pedal that is equipped with of neutralization telescopic link right-hand member, neutralizer chamber right-hand member be equipped with about run through in the drain tank of neutralizer chamber right wall, the water pipe with it is equipped with the water collecting valve to connect between the fire control water storage chamber.

The invention has the beneficial effects that: automatic collect roof rainwater, through twice filtration great impurity and small impurity in the filtering rainwater, the rainwater velocity of flow changes around the accessible when the rainwater is through secondary filter and judges whether change the cotton filter core of PP, and the rainwater after the filtration drops into appropriate amount of neutralizer and rainwater pH value in the fire control water storage chamber according to measuring pH value and rainwater velocity of flow through this equipment detection pH value, has improved the rainwater greatly and has collected and the efficiency of rainwater neutralization.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the structure at B in FIG. 1;

FIG. 4 is a schematic view of the structure at C-C in FIG. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The rainwater collecting, neutralizing and recycling device with reference to fig. 1-4 comprises a water collecting tank 11, wherein the water collecting tank 11 collects rainwater on a road surface 10, a valve 12 is arranged at the bottom of the water collecting tank 11, a primary filter screen 13 is fixedly arranged below the valve 12, a water pipe 53 is fixedly arranged below the primary filter screen 13, a replacing box 66 is fixedly arranged at the right end of the water pipe 53, a replacing cavity 67 is arranged in the replacing box 66, a transmission shaft 86 vertically penetrating through the replacing cavity 67 is arranged in the replacing cavity 67, a shifting shaft 82 is fixedly arranged on the transmission shaft 86, the left part and the right part of the shifting shaft 82 can rotate, a filter core shell 19 and a pp cotton filter core 18 are symmetrically and fixedly arranged at the left end and the right end of the shifting shaft 82, a filter cavity 20 is arranged in the pp cotton filter core 18, an output cavity 21 is arranged between the pp cotton filter core 18 and the filter core shell 19, the filter core shell 19 at the left end extends into the water collecting valve 54 to filter the rainwater through the, a butterfly valve shaft 97 which penetrates through the water pipe 53 from left to right and extends to the inside of the replacing cavity 67 from the right end is rotatably arranged in the water pipe 53, a butterfly valve 14 is fixedly arranged on the butterfly valve shaft 97 in the water pipe 53, a telescopic hose 68 is arranged in the replacing cavity 67, a cleaning opening 69 which can move up and down is fixedly arranged at the lower end of the telescopic hose 68, a transmission shaft 86 is fixedly arranged at the lower end of the replacing cavity 67, and a drain pipe 85 is fixedly arranged at the right end of the transmission shaft 86; two flow velocity analyzers 22 are fixedly arranged in the water pipe 53, each flow velocity analyzer 22 comprises a rotation speed analyzer 16 fixedly arranged on the outer wall of the left side of the water pipe 53, a speed measuring shaft 15 which extends rightwards and penetrates through the water pipe 53 leftwards and rightwards is rotatably arranged at the right end of the rotation speed analyzer 16, and four speed measuring sheets 17 are fixedly arranged on the speed measuring shaft 15; a PH analysis cavity 23 is fixedly arranged at the right end of the water pipe 53, a draft tube 24 which penetrates through the PH analysis cavity 23 from top to bottom is arranged at the upper end of the PH analysis cavity 23, the right end of the draft tube 24 extends into the water pipe 53 with an upward opening, the left end of the draft tube 24 extends into the PH analysis cavity 23 with a downward opening, an even draft motor 28 is fixedly arranged outside the top wall of the PH analysis cavity 23, the right end of the draft motor 28 is rotatably provided with a draft shaft 27 which extends into the draft tube 24 and penetrates through the draft tube 24 from left to right, a draft ball 26 is fixedly arranged on the draft shaft 27 in the water pipe 53, a through hole 25 which penetrates through from top to bottom is arranged on the draft ball 26, a rotating motor 29 is fixedly arranged on the top wall of the PH analysis cavity 23, a rotating shaft 30 is rotatably arranged at the lower end of the rotating motor 29, a rotary paper plate 31 is fixedly arranged, a paper feeding motor 35 is fixedly arranged on the rear wall of the PH analysis cavity 23, a paper feeding shaft 36 is rotatably arranged at the front end of the paper feeding motor 35, a paper feeding cam 37 is fixedly arranged on the paper feeding shaft 36, a paper testing box 39 is fixedly arranged on the right wall of the PH analysis cavity 23, PH test paper 38 is stored in the paper testing box 39, the paper feeding cam 37 can push the PH test paper 38 to the position above the paper testing hole 32, a test paper detection cavity 44 fixed on the rear wall of the PH analysis cavity 23 is arranged below the left test paper hole 32, and a test paper detector 51 is fixedly arranged on the right wall of the test paper detection cavity 44; the fixed fire control water storage chamber 55 that is equipped with of water pipe 53 right-hand member, the fixed neutralizer chamber 56 that is equipped with of 55 roof in fire control water storage chamber, the fixed right side that is equipped with in fire control water storage chamber 55 right side wall extends to connect siphunculus 61, connect the fixed conveyer pipe 62 that is equipped with of siphunculus 61 right-hand member, conveyer pipe 62 connects bellows 68, conveyer pipe 62 lower extreme external fixation is equipped with and promotes flexible motor 65, it upwards extends to fixedly be equipped with on the flexible motor 65 of promotion the inside promotion telescopic link 64 of conveyer pipe 62, it promotes slider 63 to promote the fixed promotion telescopic link 64 upper end that is equipped with.

Beneficially, a valve motor 96 is fixedly arranged on the top wall of the replacing cavity 67, a driven shaft 90 is rotatably arranged at the lower end of the valve motor 96, a supporting plate 89 is fixedly arranged on the left wall of the replacing cavity 67, the lower end of the driven shaft 90 is rotatably arranged in the supporting plate 89, a transmission gear 88 is fixedly arranged on the transmission shaft 86, an incomplete gear 91 meshed with the transmission gear 88 is fixedly arranged on the driven shaft 90, a driving incomplete bevel gear 92 is fixedly arranged on the driven shaft 90, and a butterfly bevel gear 85 meshed with the driving incomplete bevel gear 92 is fixedly arranged at the right end of a butterfly valve shaft 97.

Advantageously, a main motor 81 is fixedly arranged on the rear wall of the replacement cavity 67, the right end of the main motor 81 is rotatably provided with a gear shaft 80, a sector gear 79 and a bevel gear 77 are fixedly arranged on the gear shaft 80, rotary gears 83 positioned on the rotatable part of the transposition shaft 82 are fixedly arranged on the transposition shaft 82 below the bevel gear 77 in a left-right symmetrical manner, a bevel gear shaft 76 is rotatably arranged on the rear wall of the replacing cavity 67, a bevel gear 77 meshed with the incomplete bevel gear 78 is fixedly arranged on the bevel gear shaft 76, a limiting rod 72 is fixedly arranged on the top wall of the replacing cavity 67, a belt pulley shaft 73 is rotatably arranged on the limiting rod 72, the belt pulley shaft 73 and the bevel gear shaft 76 are provided with a transmission belt pulley 75 in a transmission way, the left end of the cleaning opening 69 is fixedly provided with a fixed rod 70, a lifting rack 71 is fixedly arranged at the left end of the fixing rod 70, and a lifting gear 74 meshed with the lifting rack 71 is fixedly arranged on the belt pulley shaft 73.

Beneficially, a test paper telescopic motor 33 is fixedly arranged on the upper wall of the PH analysis cavity 23, a test paper telescopic rod 34 is fixedly arranged at the lower end of the test paper telescopic motor 33, a test paper spring groove 41 is arranged in the test paper box 39, a test paper sliding plate 40 is slidably arranged in the test paper spring groove 41, a test paper spring 42 is connected between the bottom of the test paper sliding plate 40 and the bottom wall of the test paper spring groove 41, and PH test paper 38 is stacked at the upper end of the test paper sliding plate 40; the lower end of the test paper detector 51 is provided with a baffle sliding chute 46, a test paper baffle 45 extending leftwards into the test paper detection cavity 44 is slidably arranged in the baffle sliding chute 46, a baffle spring 47 is connected between the right end of the test paper baffle 45 and the right wall of the baffle sliding chute 46, a winding motor cavity 48 is arranged at the right end of the baffle sliding chute 46, a winding motor 50 is fixedly arranged in the winding motor cavity 48, a baffle pull rope 49 extending leftwards and connected with the right end of the test paper baffle 45 is arranged on the winding motor 50, a test paper recovery groove 43 is fixedly arranged at the lower end of the test paper detection cavity 44, and a recovery guide pipe 52 with an upward opening and a lower end opening extending into the water pipe 53 is fixedly arranged below the test paper hole.

Beneficially, a neutralization telescopic motor 57 is fixedly arranged on the right wall of the neutralizing agent cavity 56, a neutralization telescopic rod 58 is fixedly arranged at the right end of the neutralization telescopic motor 57, a neutralization push plate 59 is fixedly arranged at the right end of the neutralization telescopic rod 58, a liquid outlet groove 60 penetrating through the right wall of the neutralizing agent cavity 56 from left to right is arranged at the right end of the neutralizing agent cavity 56, and a water collecting valve 54 is connected between the water pipe 53 and the fire-fighting water storage cavity 55.

The working steps are as follows: after rainwater is stored in a certain amount in the water collecting tank 11, the valve 12 is opened, rainwater enters the water pipe 53 after being primarily filtered by the primary filter screen 13, the rainwater drives the speed measuring shaft 15 to rotate when flowing in the water pipe 53, the flow rate is measured by the upper rotating speed analyzer 16, the rainwater flows into the filter cavity 20 and continues to flow downwards after being filtered by the pp cotton filter element 18, the flow rate is measured by the lower flow rate analyzer 22, if the difference between the upper flow rate and the lower flow rate exceeds a standard value, the filtering effect of the pp cotton filter element 18 is weakened, the valve motor 96 is started to drive the butterfly valve 14 to rotate, the water pipe 53 is sealed, the transmission shaft 86 rotates after the butterfly valve 14 is closed, the right filter element shell 19 is replaced into the water pipe 53, the left filter element shell 19 rotates to the right end to be ready for cleaning; the main motor 81 is started to drive the transposition shaft 82 to rotate for a half circle, so that the opening of the output cavity 21 is upward, then the cleaning port 69 descends and extends into the output cavity 21, the telescopic motor 65 is pushed to be started to push rainwater in the conveying pipe 62 into the output cavity 21 to clean the pp cotton filter element 18, and sewage flows into the collecting tank 84 and is discharged through the drainage pipe 85; the paper feeding motor 35 is started, the PH test paper 38 is pushed to the position above the test paper hole 32 at the left end, the rotating motor 29 is started, the positions of the left test paper hole 32 and the right test paper hole 32 are changed, the diversion motor 28 starts rainwater to fall into the PH test paper 38 above the test paper hole 32 at the right end through the diversion pipe 24 and the through hole 25 to react with the PH test paper 38, redundant rainwater flows back to the water pipe 53 through the recovery diversion pipe 52, the rotating motor 29 starts to rotate the reacted PH test paper 38 to the left end, the test paper stretching motor 33 starts to push the PH test paper 38 into the test paper detection cavity 44 through the test paper stretching rod 34 to detect the PH value of the rainwater, and finally the PH test paper 38 is fed into the; by calculating the flow rate and the PH of the rainwater, the neutralizer chamber 56 pushes an appropriate amount of neutralizer into the fire-fighting water storage chamber 55 to neutralize the rainwater.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.