A rainwater impurity separation device for construction

Abstract

The present invention relates to the technical field of solid impurity separation, and specifically to a rainwater impurity separation device for construction, comprising a water collecting box, a water filter cartridge, a water supply component, a buffer bin and a valve component. The water collecting box is vertically arranged and has a chamber inside, the chamber is used to hold rainwater, the water filter cartridge is connected to the lower part of the water collecting box, the lower end of the water filter cartridge is sealed and the upper part thereof is connected to the chamber, the water supply component is used to intermittently transport the liquid inside the chamber to the water filter cartridge, and a plurality of water filter holes are opened on the peripheral wall of the water filter cartridge. The present invention is provided with a water collecting box, a water filter cartridge, a water supply component, a buffer bin and a valve component. With the intermittent transport of rainwater to the inside of the water filter cartridge by the water supply component and the cooperation of the valve component, the device can timely separate the impurities generated by filtering the water filter holes, and avoid the accumulation of impurities inside the water filter cartridge, thereby ensuring the long-term normal use of the water filter holes.

Description

Technical Field

[0001] The invention relates to the technical field of solid impurity separation, in particular to a rainwater impurity separation device for building construction. Background Art

[0002] During the construction of a house, the operation of equipment and the use of building materials will generate a large amount of sand, gravel, dirt and settled dust in the construction site environment. When it rains, a large amount of rainwater will collect on the roof of the house. In order to recycle the collected rainwater, drainage pipes are usually set up to drain the rainwater on the roof of the house. However, there are the following problems during its use: the falling rainwater contains a large amount of impurities, such as dust and construction dust. This phenomenon is particularly serious in summer. The impurities in the rainwater will accumulate inside the drainage pipe, causing the recycled rainwater to be turbid and unable to be used directly. In severe cases, the accumulated dust will cause the entire drainage pipe to be blocked. Summary of the invention

[0003] Based on this, it is necessary to provide a rainwater impurity separation device for construction to address the problems existing in the current rainwater impurity separation device for construction. The device can filter impurities in rainwater and separate the impurities generated by filtration from the rainwater in time to prevent impurities from clogging the filter holes and reducing the rainwater filtration efficiency.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A rainwater impurity separation device for construction includes:

[0006] A water collecting tank is arranged vertically and has a chamber inside;

[0007] A water filter cartridge, which is connected to the lower part of the water collecting tank, the lower end of which is sealed and the upper part of which is connected to the chamber;

[0008] A water supply assembly, the water supply assembly is used to intermittently deliver the liquid inside the chamber to the water filter cartridge;

[0009] A plurality of water filtering holes are opened on the peripheral wall of the water filter cartridge, a stopper is elastically connected inside the water filter cartridge, and the stopper is slidably connected to the peripheral wall of the water filter cartridge;

[0010] A buffer bin is arranged on the upper part of the water filter cartridge and is communicated with the water filter cartridge, and the lower end of the buffer bin is open;

[0011] A valve assembly, the valve assembly is used to control the opening or closing of the lower end opening of the buffer bin;

[0012] The valve assembly is configured so that when the water supply assembly delivers liquid into the water filter cartridge, the lower end opening of the buffer bin is closed;

[0013] The valve assembly is also configured so that when the water supply assembly stops conveying liquid into the water filter cartridge, the lower end opening of the buffer bin is opened.

[0014] In one of the embodiments, a retaining ring is slidably connected inside the water filter cartridge, and the retaining ring and the retaining plug are spaced apart in the vertical direction and can move synchronously.

[0015] In one embodiment, the water supply assembly includes a flow guide pipe, a flow guide tube and a float. The flow guide pipe is fixedly inserted at the bottom of the water collecting tank. The lower end of the flow guide tube is open and is coaxially arranged with the flow guide pipe. There is a preset gap between the inner circumferential wall of the flow guide tube and the outer circumferential wall of the flow guide tube. The float is arranged outside the flow guide tube.

[0016] In one embodiment, the top of the water collecting box is slidably connected to a water inlet pipe, a limiting frame is fixedly provided on the inner circumferential wall of the water inlet pipe, a limiting rod is provided on the top of the guide tube, and the limiting frame is slidably connected to the limiting rod.

[0017] In one embodiment, the water filter cartridge and the water collection tank are connected by an elastic telescopic rod, so that the water filter cartridge can move relative to the water collection tank in a vertical direction;

[0018] The volume of the buffer bin is variable, and the volume of the buffer bin is configured to be positively correlated with the telescopic variation of the elastic telescopic rod.

[0019] In one embodiment, the valve assembly includes a first grid plate, a second grid plate, a long connecting rod and an inclined block, the first grid plate is arranged at the lower end of the buffer bin, the first grid plate and the second grid plate are arranged up and down and contact each other, one side of the second grid plate is elastically connected to the long connecting rod, the second grid plate can move in the horizontal direction relative to the long connecting rod, one end of the long connecting rod away from the second grid plate is fixedly connected to the water collecting tank, and the inclined block is connected to the other side of the second grid plate;

[0020] The stopper can abut against the inclined surface of the inclined block, and the inclined block is configured so that when the stopper moves upward to a preset position, the inclined block can move horizontally to the right by a preset distance, so that the first grid plate and the second grid plate overlap in the vertical direction;

[0021] The inclined block is also configured so that when the stopper moves downward to a preset position, the inclined block can move horizontally to the left by a preset distance, so that the first grid plate and the second grid plate are misaligned in the up-down direction.

[0022] In one of the embodiments, the rainwater impurity separation device for construction further includes a shell, which is arranged to surround the outside of the water filter cartridge and is slidably connected to the water collecting tank.

[0023] In one of the embodiments, a first sewage pump is further provided on the shell, a sewage pumping end of the first sewage pump is connected to the bottom of the chamber, and a sewage discharge end of the first sewage pump is located outside the shell.

[0024] In one of the embodiments, a second sewage pump is further provided on the shell, a sewage pumping end of the second sewage pump is connected to the bottom of the water filter cartridge, and a sewage discharge end of the second sewage pump is located outside the shell.

[0025] In one of the embodiments, the shell is further provided with a sewage discharge port, which is used to discharge sewage, and the shell is further provided with a filtered water discharge port, which is used to discharge filtered water.

[0026] The beneficial effects of the present invention are:

[0027] The present invention is provided with a water collecting box, a water filter cartridge, a water supply component, a buffer bin and a valve component. When the water supply component intermittently delivers rainwater to the inside of the water filter cartridge and the valve component cooperates, the device can timely clean up the impurities generated by filtering the water filter holes, avoiding the accumulation of impurities inside the water filter cartridge, thereby ensuring the long-term normal use of the water filter holes and preventing the reduction of rainwater filtration efficiency due to the clogging of the water filter holes by impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall schematic diagram of a rainwater impurity separation device for building construction according to the present invention;

[0029] Figure 2 This is a front view of a rainwater impurity separation device for construction of the present invention;

[0030] Figure 3 It is a side view of a rainwater impurity separation device for building construction according to the present invention;

[0031] Figure 4 for Figure 3 Middle AA section view;

[0032] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0033] Figure 6 for Figure 4 Schematic diagram of the enlarged structure at C in the middle;

[0034] Figure 7 A half-section perspective view of a rainwater impurity separation device for construction of the present invention;

[0035] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at D in the middle;

[0036] Fig. 9 The present invention is a schematic diagram of the shell structure of a rainwater impurity separation device for building construction.

[0037] in:

[0038] 100, water collecting box; 110, chamber; 120, water inlet pipe; 130, limit frame; 140, limit rod; 150, elastic telescopic rod; 200, water filter cartridge; 210, water filter hole; 220, retaining ring; 230, stopper; 231, bump; 240, second spring; 300, water supply assembly; 310, guide tube; 320, guide cartridge; 330, float; 400, buffer bin; 410, fixed part; 420, movable part; 500, valve assembly; 510, first grid plate; 520, second grid plate; 530, long connecting rod; 531, first spring; 540, inclined block; 550, middle guide rod; 600, shell; 610, sewage outlet; 620, filtered water outlet; 630, inner shell. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] like Figure 1-Figure 9As shown, a rainwater impurity separation device for construction includes a water collecting box 100, a water filter cartridge 200, a water supply assembly 300, a buffer bin 400 and a valve assembly 500. The water collecting box 100 is vertically arranged and has a chamber 110 inside. The chamber 110 is used to hold rainwater. The water filter cartridge 200 is connected to the lower part of the water collecting box 100. The lower end of the water filter cartridge 200 is sealed and the upper part thereof is connected to the chamber 110. The water supply assembly 300 is used to intermittently transport the liquid inside the chamber 110 to the water filter cartridge 200. The peripheral wall of the water filter cartridge 200 is provided with a plurality of water filter holes 210. The water filter cartridge 200 is elastically connected with a stopper 230. Specifically, the bottom of the water filter cartridge 200 is provided with a second spring 2 40. One end of the second spring 240 away from the water filter cartridge 200 is fixedly connected to the stopper 230. The stopper 230 is slidably connected to the peripheral wall of the water filter cartridge 200. The buffer bin 400 is arranged at the upper part of the water filter cartridge 200 and is communicated with the water filter cartridge 200. The lower end of the buffer bin 400 is open. The valve assembly 500 is used to control the opening or closing of the lower end opening of the buffer bin 400. The valve assembly 500 is configured so that when the water supply assembly 300 conveys liquid into the water filter cartridge 200, the lower end opening of the buffer bin 400 is closed. The valve assembly 500 is also configured so that when the water supply assembly 300 stops conveying liquid into the water filter cartridge 200, the lower end opening of the buffer bin 400 is opened (the conveyed liquid is specifically rainwater in the present invention).

[0043] When in use, the staff transports unfiltered rainwater to the water collection box 100. Under the driving action of the water supply component 300, the rainwater in the water collection box 100 intermittently enters the water filter cartridge 200. When the water supply component 300 transports rainwater to the inside of the water filter cartridge 200, the rainwater enters the inside of the water filter cartridge 200. At this time, the rainwater is located in the upper area of ​​the stopper 230. The stopper 230 gradually moves downward under the gravity of the rainwater, and the water filter holes 210 on the peripheral wall of the water filter cartridge 200 gradually appear. , rainwater is discharged outward through the water filter hole 210, and impurities in the rainwater are filtered by the water filter hole 210 and remain on the inner wall of the water filter cartridge 200, so the mud content of the rainwater discharged through the water filter hole 210 is lower. When the water supply component 300 stops conveying rainwater into the water filter cartridge 200, the lower end opening of the buffer bin 400 opens, and the rainwater retained in the area above the stopper 230 is discharged outward through the buffer bin 400, and the pressure on the stopper 230 is reduced. Under the elastic force of the stopper 230, the stopper 230 slides upward along the inner peripheral wall of the water filter cartridge 200, thereby scraping off the impurities adhering to the inner peripheral wall of the water filter cartridge 200, so that the scraped impurities adhere to the upper end surface of the stopper 230. When the water supply component 300 delivers rainwater to the inside of the water filter cartridge 200 again, the impurities adhering to the upper end surface of the stopper 230 are washed into the buffer bin 400 by the flushing effect of the rainwater and gradually deposited at the bottom of the buffer bin 400. When the water supply component 300 stops, the impurities adhering to the upper end surface of the stopper 230 are washed into the buffer bin 400 by the flushing effect of the rainwater. After the rainwater is transported to the inside of the non-directional water filter cartridge 200, the valve assembly 500 is started to open the lower end opening of the buffer bin 400, and the sewage retained in the buffer bin 400 is discharged. In summary, with the intermittent delivery of rainwater to the inside of the water filter cartridge 200 by the water supply assembly 300 and the cooperation of the valve assembly 500, the device can promptly clean up the impurities generated by filtering the water filter holes 210, avoid the accumulation of impurities inside the water filter cartridge 200, and thus ensure the long-term normal use of the water filter holes 210.

[0044] It can be understood that the impurities in the above embodiments refer to solid matter formed by the mixture of dust and rainwater.

[0045] It should also be noted that the upper end surface of the baffle 230 is inclined, and the height of the side close to the buffer bin 400 is lower than the height of the side away from the buffer bin 400. Such a setting can accelerate the gathering of impurities into the buffer bin 400, so that when rainwater washes away the impurities above the baffle 230, the impurities can be quickly separated from the baffle 230 and gathered into the buffer bin 400.

[0046] In a further embodiment, Figure 6 As shown, a retaining ring 220 is also slidably connected inside the water filter cartridge 200. The retaining ring 220 and the retaining plug 230 are spaced apart in the vertical direction and can move synchronously. Specifically, the retaining ring 220 and the retaining plug 230 are coaxially disposed and fixedly connected between the two by a plurality of spaced apart connecting rods.

[0047] During use, when the impurities in the area above the stopper 230 flow outward through the buffer bin 400 together with the rainwater, the volume of the area below the stopper 230 increases, and thus the air pressure in the area decreases. Under the action of the air pressure difference, the impurities in the water filter hole 210 enter the water filter cartridge 200 and are located in the area above the stopper 230, thereby achieving automatic cleaning of the water filter hole 210. By setting the retaining ring 220, the water filter hole 210 can be regionally shielded, so that the gas pressure difference gradually acts on the water filter holes 210 at different heights, thereby enhancing the cleaning effect of the gas pressure on the impurities in the water filter hole 210.

[0048] It should also be added that in order to make the recoil effect of the gas pressure on the impurities in the water filter hole 210 more significant, a damping mechanism can be provided between the water filter cartridge 200 and the retaining ring 220 so that the damping mechanism damps the upward movement of the retaining ring 220, thereby slowing down the upward movement speed of the stopper 230 and the retaining ring 220.

[0049] In a further embodiment, Figure 4 As shown, the water supply assembly 300 includes a flow guide tube 310, a flow guide tube 320 and a float 330. The flow guide tube 310 is fixedly inserted at the bottom of the water collecting tank 100. The lower end of the flow guide tube 320 is open and is coaxially arranged with the flow guide tube 310. There is a preset gap between the inner circumferential wall of the flow guide tube 320 and the outer circumferential wall of the flow guide tube 310, and the float 330 is arranged outside the flow guide tube 320.

[0050] When in use, rainwater is transported to the water collection box 100 at a preset flow rate A1. When the rainwater enters the chamber 110, the height of the rainwater in the water collection box 100 gradually increases. When the height of the rainwater is greater than the height of the upper end surface of the guide tube 310, the rainwater in the chamber 110 is discharged to the water filter cartridge 200 through the guide tube 310. The flow rate of the rainwater passing through the guide tube 310 at this time is defined as A2. A2 is greater than A1. At the same time, under the siphon effect, even if the height of the rainwater in the chamber 110 is lower than the height of the upper end surface of the guide tube 310, the rainwater in the chamber 110 is discharged to the water filter cartridge 200. The rainwater can also continuously enter the guide tube 310. When the liquid level in the chamber 110 is lower than the lower end height of the guide tube 320, the rainwater stops entering the filter cartridge 200 through the guide tube 310. Then, as the rainwater level in the water collecting tank 100 gradually increases, the rainwater level in the water collecting tank 100 reaches the upper end height of the guide tube 310 again. At this time, the rainwater enters the filter cartridge 200 through the guide tube 310 again, thereby realizing that the rainwater intermittently enters the filter cartridge 200 through the guide tube 310. In addition, by providing the float 330, the lower end surface of the guide tube 320 can be located away from the bottom of the water collecting tank 100, thereby reducing the amount of impurities entering the guide tube 320. When the height of the rainwater retained in the water collecting tank 100 decreases, the lower end surface height of the guide tube 320 can also be adaptively lowered to avoid a large amount of rainwater remaining in the water collecting tank 100 and being unable to be discharged.

[0051] It should also be added that, by providing the guide pipe 310 and the guide tube 320 , the rainwater can be allowed to undergo a static treatment in the chamber 110 first, thus playing a role of preliminary filtration.

[0052] It should also be added that the cross-sectional area of ​​the float 330 gradually increases from top to bottom in the vertical direction, so that the float 330 is "conical" in the vertical direction, so that impurities in the rainwater can be dispersed around the guide tube 320, avoiding the accumulation of impurities in the area where the guide tube 320 is located.

[0053] In a further embodiment, Figure 5 As shown, the top of the water collecting box 100 is slidably connected with the water inlet pipe 120, the inner wall of the water inlet pipe 120 is fixedly provided with a limiting frame 130, the top of the guide tube 320 is provided with a limiting rod 140, and the limiting frame 130 is slidably connected with the limiting rod 140.

[0054] The purpose of setting the limit frame 130 and the limit rod 140 is to limit the lower limit position of the guide tube 320 to prevent the lower end surface of the guide tube 320 from contacting the bottom of the chamber 110 and causing impurities to block the lower end surface of the guide tube 320.

[0055] In a further embodiment, Figure 4As shown, the water filter cartridge 200 and the water collecting tank 100 are connected by an elastic telescopic rod 150 so that the water filter cartridge 200 can move relative to the water collecting tank 100 in the vertical direction. The volume of the buffer bin 400 is variable, and the volume of the buffer bin 400 is configured to be positively correlated with the telescopic change of the elastic telescopic rod 150.

[0056] Because the density of water containing impurities is greater than that of normal rainwater, when the rainwater contains a large amount of impurities, the weight of the rainwater will increase, and the elastic telescopic rod 150 will have a large telescopic change. At this time, the plug 230 will scrape off a large amount of impurities when it slides upward once, so it takes a longer time to flush away the impurities on the surface of the plug 230. By increasing the volume of the buffer bin 400, more water can be stored in the buffer bin 400, that is, it takes a longer time for the sewage to fill the buffer bin 400.

[0057] In a further embodiment, Figure 6 As shown, the valve assembly 500 includes a first grid plate 510, a second grid plate 520, a long connecting rod 530 and an inclined block 540. The first grid plate 510 is arranged at the lower end of the buffer bin 400. The first grid plate 510 and the second grid plate 520 are arranged up and down and contact each other. One side of the second grid plate 520 is elastically connected to the long connecting rod 530. Specifically, the long connecting rod 530 and the second grid plate 520 are connected by a first spring 531. The first spring 531 can be compressed in the horizontal direction, so that the second grid plate 520 can move in the horizontal direction relative to the long connecting rod 530. One end of the long connecting rod 530 away from the second grid plate 520 is fixedly connected to the water collecting wall. On the box 100, the inclined block 540 is connected to the other side of the second grid plate 520. Specifically, the inclined block 540 and the second grid plate 520 are connected by the intermediate guide rod 550, and the stopper 230 can abut against the inclined surface of the inclined block 540. The inclined block 540 is configured so that when the stopper 230 moves upward to a preset position, the inclined block 540 can move horizontally to the right by a preset distance, so that the first grid plate 510 and the second grid plate 520 overlap in the vertical direction. The inclined block 540 is also configured so that when the stopper 230 moves downward to a preset position, the inclined block 540 can move horizontally to the left by a preset distance, so that the first grid plate 510 and the second grid plate 520 are misaligned in the vertical direction.

[0058] It should also be added that in order to prevent the inclined block 540 from moving to the area where the water filter cartridge 200 is located when rainwater does not enter the interior of the water filter cartridge 200, specifically, a protrusion 231 is provided at the lower end of the stopper 230 and close to the side of the inclined block 540, so that the protrusion 231 abuts against the inclined block 540, thereby limiting the movement of the inclined block 540 through the protrusion 231.

[0059] When rainwater does not enter the water filter cartridge 200, the positions of the inclined block 540 and the stopper 230 are as follows: Figure 6As shown, at this time, the protrusion 231 pushes the inclined block 540, and the first spring 531 is in a compressed state. At this time, the first grid plate 510 and the second grid plate 520 overlap in the vertical direction. When rainwater exerts a downward pressure on the stopper 230, the stopper 230 moves vertically downward. When the stopper 230 moves downward to a preset position, the stopper 230 no longer interferes with the movement of the inclined block 540. At this time, under the elastic force of the first spring 531, the inclined block 540 moves to the left by a preset distance. At this time, the first grid plate 510 and the second grid plate 520 are misaligned in the vertical direction, and the buffer The lower end opening of the bin 400 is closed, and rainwater entering the water filter cartridge 200 can only be discharged outward through the water filter hole 210. When water stops entering the water filter cartridge 200, under the elastic force of the second spring 240, the stopper 230 returns to its original position and moves upward. At this time, the stopper 230 pushes the inclined block 540 to move to the right through the inclined surface of the inclined block 540. When the stopper 230 moves upward to the preset position, the inclined block 540 moves to the right by a preset distance. At this time, the first grid plate 510 and the second grid plate 520 overlap in the up and down directions, and the sewage inside the buffer bin 400 can be discharged outward.

[0060] It should also be noted that in order to enable the intermediate guide rod 550 and the second grid plate 520 to move synchronously in the horizontal direction, the intermediate guide rod 550 and the second grid plate 520 should be plugged into each other, so that the movement of the second grid plate 520 in the vertical direction will not drive the inclined block 540 to move. Specifically, a socket can be opened at one end of the second grid plate 520 close to the intermediate guide rod 550, and the axis of the socket is vertical, so that the intermediate guide rod 550 can be plugged into the socket.

[0061] It should also be noted that in order to make the volume of the buffer bin 400 variable, specifically, the buffer bin 400 can be divided into a fixed part 410 and a movable part 420, the fixed part 410 is fixedly connected to the water filter cartridge 200, and the movable part 420 is fixedly connected to the long connecting rod 530. In this way, when the impurity content in the rainwater is high, the downward movement of the water collecting tank 100 will drive the movable part 420 to move downward through the long connecting rod 530, thereby increasing the volume of the buffer bin 400.

[0062] In a further embodiment, Figure 7 As shown, the rainwater impurity separation device for construction also includes a shell 600, which is surrounded and arranged on the outside of the water filter cartridge 200. The shell 600 is slidably connected to the water collecting tank 100. The shell 600 is arranged to guide the flow of filtered rainwater and muddy sewage. Specifically, an inner shell 630 is also arranged in the shell 600, and the lower end of the inner shell 630 is penetrated to form a filtered water discharge port 620. The filtered water discharge port 620 is used to discharge the filtered water outward. The sewage discharge port 610 is arranged on the buffer bin 400 and is located below the buffer bin 400, and is used to discharge the sewage outward.

[0063] In a further embodiment, a first sewage pump is also provided on the shell 600, and one end of the first sewage pump for pumping sewage is connected to the bottom of the chamber 110, and one end of the first sewage pump for discharging sewage is located outside the shell 600. This arrangement is to extract impurities at the bottom of the chamber 110 to avoid excessive accumulation of impurities at the bottom of the chamber 110.

[0064] In a further embodiment, a second sewage pump is also provided on the shell 600, and one end of the second sewage pump for pumping sewage is connected to the bottom of the water filter cartridge 200, and one end of the second sewage pump for discharging sewage is located outside the shell 600. This arrangement is to extract impurities at the bottom of the water filter cartridge 200 to avoid excessive accumulation of impurities at the bottom of the water filter cartridge 200.

[0065] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A rainwater impurity separation device for construction, characterized in that: include: A water collecting tank is arranged vertically and has a chamber inside; A water filter cartridge, which is connected to the lower part of the water collecting tank, the lower end of which is sealed and the upper part of which is connected to the chamber; A water supply assembly, the water supply assembly is used to intermittently deliver the liquid in the chamber to the water filter cartridge; A plurality of water filtering holes are opened on the peripheral wall of the water filter cartridge, a stopper is elastically connected inside the water filter cartridge, and the stopper is slidably connected to the peripheral wall of the water filter cartridge; A buffer bin is arranged on the upper part of the water filter cartridge and is communicated with the water filter cartridge, and the lower end of the buffer bin is open; A valve assembly, the valve assembly is used to control the opening or closing of the lower end opening of the buffer bin; The valve assembly is configured so that when the water supply assembly delivers liquid into the water filter cartridge, the lower end opening of the buffer bin is closed; The valve assembly is also configured so that when the water supply assembly stops conveying liquid into the water filter cartridge, the lower end opening of the buffer bin opens; the water supply assembly comprises a guide tube, a guide tube and a float, the guide tube is fixedly plugged into the bottom of the water collecting tank, the lower end of the guide tube is open and is coaxially arranged with the guide tube, a preset gap is provided between the inner circumferential wall of the guide tube and the outer circumferential wall of the guide tube, and the float is arranged outside the guide tube; the top of the water collecting tank is slidably connected with a water inlet pipe, a limiting frame is fixedly provided on the inner circumferential wall of the water inlet pipe, a limiting rod is provided on the top of the guide tube, and the limiting frame is slidably connected with the limiting rod; the water filter cartridge and the water collecting tank are connected by an elastic telescopic rod, so that the water filter cartridge can move relative to the water collecting tank in the vertical direction; The volume of the buffer bin is variable, and the volume of the buffer bin is configured to be positively correlated with the telescopic variation of the elastic telescopic rod; the valve assembly includes a first grid plate, a second grid plate, a long connecting rod and an inclined block, the first grid plate is arranged at the lower end of the buffer bin, the first grid plate and the second grid plate are arranged up and down and contact each other, one side of the second grid plate is elastically connected to the long connecting rod, the second grid plate can move in the horizontal direction relative to the long connecting rod, one end of the long connecting rod away from the second grid plate is fixedly connected to the water collecting tank, and the inclined block is connected to the other side of the second grid plate; The stopper can abut against the inclined surface of the inclined block, and the inclined block is configured so that when the stopper moves upward to a preset position, the inclined block can move horizontally to the right by a preset distance, so that the first grid plate and the second grid plate overlap in the vertical direction; The inclined block is also configured so that when the stopper moves downward to a preset position, the inclined block can move horizontally to the left by a preset distance, so that the first grid plate and the second grid plate are misaligned in the up-down direction.

2. A rainwater impurity separation device for construction according to claim 1, characterized in that: A retaining ring is also slidably connected inside the water filter cartridge, and the retaining ring and the retaining plug are arranged at intervals in the vertical direction and can move synchronously.

3. A rainwater impurity separation device for construction according to claim 1, characterized in that: The rainwater impurity separation device for construction also includes a shell, which is arranged to surround the outside of the water filter cartridge and is slidably connected to the water collecting tank.

4. A rainwater impurity separation device for construction according to claim 3, characterized in that: The shell is also provided with a first sewage pump, a sewage pumping end of the first sewage pump is connected with the bottom of the chamber, and a sewage discharge end of the first sewage pump is located outside the shell.

5. A rainwater impurity separation device for construction according to claim 4, characterized in that: A second sewage pump is also arranged on the shell, a sewage pumping end of the second sewage pump is connected with the bottom of the water filter cartridge, and a sewage discharge end of the second sewage pump is located outside the shell.

6. A rainwater impurity separation device for construction according to claim 4, characterized in that: The shell body is also provided with a sewage discharge port for discharging sewage, and the shell body is also provided with a filtered water discharge port for discharging filtered water.

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