CN113944209B - A rainwater discarding device for rainwater collection and its application method - Google Patents

Abstract

The invention provides a rainwater drainage device for rainwater collection and a use method thereof, comprising a box body, wherein a partition plate is arranged in the box body, and the box body is connected with a drainage pipe, a water inlet pipe and a water outlet pipe; the partition plate is provided with a water through hole; the inside of the box body is also eccentrically hinged with a water collecting barrel; the box body is internally provided with a balancing weight which is connected with the water collecting barrel; the partition plate is connected with a plugging plate in a sliding manner, one end of the plugging plate is connected with a tension spring, the other end of the tension spring is connected with the box body, and the plugging plate is connected with the balancing weight; the water inlet pipe is connected with an end plate, and the end plate is provided with a sealing ring; the water inlet pipe is provided with a piston which is communicated with a sleeve; the sleeve is tightly attached to the sealing ring; the piston is connected with the end plate through a spring; the wall of the sleeve is provided with a second water outlet, and the water inlet pipe is provided with a first water outlet; the device also comprises a baffle plate which is connected with the outer wall of the sleeve. According to the invention, the two working states of rainwater drainage and rainwater collection are automatically switched by the change of the rainwater flow, a power supply and automatic control equipment are not needed, and the device is easy to overhaul and maintain.

Description

A rainwater discarding device for rainwater collection and its application method

technical field

The invention belongs to the technical field of rainwater collection, and in particular relates to a rainwater discarding device for rainwater collection and a usage method thereof.

Background technique

In the early stage of rainfall, the rainwater dissolves or carries a large amount of polluting gases such as acid gas, vehicle exhaust, and factory exhaust gas in the air. After landing on the ground or buildings, the initial rainwater contains a large amount of pollutants, and the pollution degree of the initial rainwater is relatively high. , so when collecting rainwater, it is necessary to discard this part of the rainwater. In order to solve this problem, the initial rainwater diverter gradually came into people's field of vision. The initial rainwater abandonment device of the rainwater collection system in the prior art usually adopts structures such as solenoid valves and floating balls to realize the initial rainwater abandonment, but its structure is complicated, electricity is required, and maintenance costs are high.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, a rainwater discarding device for rainwater collection and a usage method thereof are provided. The purpose of the present invention is to adopt a purely mechanical structure to realize the early rainwater abandonment when the rainfall intensity is small at the initial stage of rainfall, and to realize rainwater collection after the rainfall intensity increases in the later stage of rainfall.

The technical solution adopted by the present invention to solve its technical problems is:

This technical solution proposes a rainwater discarding device for rainwater collection, which includes a box body. A partition plate is arranged in the box body to divide the inner space of the box body into two parts. The flow pipe is provided with a water inlet pipe and a water outlet pipe above the partition plate, and the discarded flow pipe, water inlet pipe, and water outlet pipe are respectively connected with the box body; the partition plate is provided with a water outlet; the box body An eccentrically hinged water collecting bucket is also arranged in the body; a counterweight is arranged in the box, and a first pulley is connected to the inner wall of the box, and the top of the counterweight is connected to the bottom of the water collecting bucket through a first pull rope. The first pull rope is hung on the first pulley; the upper part of the partition plate is slidably connected with a blocking plate that is compatible with the water outlet, and one end of the blocking plate is connected with a tension spring, and the tension spring The other end is connected with the inner wall of the box, the inner wall of the box is connected with a second pulley, and the blocking plate is connected with the bottom end of the counterweight through a second stay rope; the second stay rope is hung around the On the second pulley; the blocking plate is provided with a plurality of second permeable holes; the water collecting bucket is provided with a plurality of first permeable holes;

One end of the water inlet pipe is also connected to an end plate, and the end plate is provided with a through hole, and a sealing ring is installed in the through hole; a piston is also movably arranged in the water inlet pipe, and the piston is provided with a central hole; One end of the piston is connected to a sleeve with an open end and a closed end; the central hole communicates with the inside of the sleeve; the other end of the sleeve passes through the sealing ring, and the wall of the sleeve is in contact with the sleeve. The sealing ring is tightly fitted; a spring is arranged in the water inlet pipe, one end of the spring is connected with the piston, and the other end is connected with the end plate; the wall of the sleeve is provided with at least one second Outlet, the rainwater flowing out through the second outlet flows into the water collection bucket; the water inlet pipe is provided with a first outlet with the opening facing downward, and the rainwater discharged through the first outlet flows into the box; it also includes a A baffle for blocking the first water outlet, the baffle is slidably connected to the outer wall of the water inlet pipe, and the baffle is connected to the outer wall of the sleeve through a connecting rod.

When the spring is not compressed, the piston is located on the right side of the first outlet and the baffle is located on the left side of the first outlet, and the first outlet is fully opened; the second outlet is completely inside the water inlet pipe; in the initial state, the distribution The weight pulls the water collecting bucket through the first stay rope to be inclined.

The outer wall of the water inlet pipe is connected with two guide rails, and the connecting rod is slidingly connected with the guide rails; both guide rails are located on the same side of the first water outlet; When the guide rails are in contact, the baffle completely blocks the first water outlet; and the second water outlet is completely removed from the water inlet pipe and enters into the inside of the tank.

It also includes an arc-shaped chute, the chute is arranged under the water inlet pipe, one end of the chute is connected with the water inlet pipe or guide rail; the chute is inclined, and the lower end of the chute is located Above the mouth of the bucket; the rainwater drained from the second drain falls into the chute to collect and flows into the water collection bucket.

A boss is connected to the inner wall of the box, and a rope hole is opened inside the boss, and one end of the second pull rope passes through the rope hole to connect with the counterweight.

The piston is also connected with a strainer.

A fitting groove is opened on the surface of the piston, and the filter screen is fitted into the fitting groove, and the side faces of the filter screen are flush with the side faces of the piston.

An impact plate is also arranged in the water inlet pipe, and the top of the impact plate is hinged with the inside of the water inlet pipe.

The present invention also proposes a method for using a rainwater abandonment device for rainwater collection, comprising the steps of:

Step 1: In the initial stage of rainfall, the initial rainwater flows into the water inlet pipe. Due to the obstruction of the piston, the flow of the initial rainwater is not enough to push the piston to move. The water outlet opened by the partition flows to the jettison pipe, and the initial rainwater is discharged by the jettison;

Step 2: As the rainfall increases, rainwater flows into the water inlet pipe, and the rainwater impacts the piston. The flow of rainwater is enough to make the piston compress the spring and move to the right, and drive the sleeve to move to the right; when the sleeve is moving, the first The second drain port also moves to the right and enters the box to realize the connection between the second drain port and the inside of the box; when the sleeve moves to the right, it will also drive the connecting rod to move to the right, and the rightward movement of the connecting rod will drive the baffle to move to the right. Block the first drainage port; make rainwater flow into the water collection bucket through the second drainage outlet; as the water in the water collection bucket continues to increase, the water collection bucket will overcome the resistance of the counterweight and rotate, and the water collection bucket will rotate during the rotation process. Drive the counterweight to move up, and at the same time, the counterweight will drive the blocking plate to move to the right through the second pull rope, the tension spring will generate elastic force, and the blocking plate will block the water outlet; since the water intake is much greater than the discharge at the water outlet, The rainwater in the box increases continuously until it is discharged from the water outlet and collected.

In the above step 1, at the initial stage of rainfall, the initial rainwater flows into the water inlet pipe. Due to the barrier of the impact plate, the flow rate of the initial rainwater is not enough to push the impact plate to rotate, so that the piston cannot be moved, and the initial rainwater is discarded; in the above step 2, As the rainfall increases, the rainwater will first impact the impact plate, and the impact plate will rotate. During the rotation, the impact plate will push the piston to move to the right, so that the rainwater will flow into the water collection bucket through the second drain port and finally complete the collection of rainwater; Including step 3: in the late stage of rainfall, as the rainfall decreases, under the action of the elastic force of the spring, the piston automatically resets, and the baffle automatically resets; in the process of piston reset, the residual impurities filtered by the filter screen are in the piston. Under the push, it is discharged through the first water outlet and falls into the box; the rainwater stored in the water collecting bucket is discharged through the first water permeable hole, and the rainwater stored in the box is discharged through the second water permeable hole and finally discharged through the discarding flow pipe; The rainwater is continuously reduced, and under the action of the counterweight, the water collection bucket gradually rotates and tilts and finally returns to the original state.

Compared with the prior art, the present invention has the following advantages:

1. The present invention automatically completes the switching between the two working states of rainwater abandonment and rainwater collection according to the change of rainwater flow, without power supply and automatic control equipment, easy to repair and maintain, simple in structure, ingenious and reasonable in design.

2. The present invention is provided with an eccentrically hinged water collecting bucket, utilizing the change in the weight of the rainwater in the water collecting bucket to realize self-rotation, and then it can be linked to drive the blocking plate to move, so that the blocking plate will block the water outlet, and the rainwater will flow from The outlet pipe is discharged to complete the collection of rainwater, which is convenient for subsequent use; the present invention arranges a piston and a sleeve in the water inlet pipe, and opens a first water outlet on the water inlet pipe, and the first water outlet has a baffle linked with the sleeve ; There is a second drain in the sleeve, using the change of rainwater flow to realize the change of the position of the second drain and the linkage to realize the blocking of the first drain, so that rainwater can enter the water collection bucket through the second drain , the final linkage realizes the rotation of the water collecting bucket and the blocking of the water outlet; the structure setting inside the water inlet pipe, the setting of the part of the structure of the water collecting bucket and the structure of the water outlet, the three parts cooperate skillfully, and the initial rainwater is well realized. Collection of clean rainwater later in runoff and precipitation.

3. By installing a filter screen on the piston, it can play a filtering role and facilitate the collection of clean rainwater. Moreover, since the piston is movable, the impurities intercepted by the filter screen can be discharged from the first drain port with the movement of the piston. Discharge at the place, realize the self-cleaning of impurities, and prolong the service life of the filter.

4. The device is also provided with an arc-shaped inclined chute, which is used to conveniently receive the rainwater discharged from the second drainage port, so that the rainwater can accurately flow into the water collection bucket.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and understandable from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a partially enlarged view of the water inlet pipe and the sleeve.

Fig. 3 is a top view of the water collecting bucket.

Fig. 4 is a partial sectional view of the water collecting bucket.

Fig. 5 is a schematic structural view of the present invention when the second water outlet enters the inside of the box.

Fig. 6 is a structural schematic diagram of the present invention after the water collection bucket is rotated.

Fig. 7 is a schematic structural diagram of Embodiment 2 of the present invention.

Fig. 8 is an enlarged view of part of the impact plate in Fig. 7 .

Fig. 9 is a schematic structural view of the chute in the present invention.

Explanation of reference signs:

1 box body; 2 water inlet pipe; 3 water outlet pipe; 4 discarding flow pipe; 5 partition plate; 6 water outlet; 7 blocking plate; 8 slide rail; Stay rope; 13 Boss; 14 Counterweight block; 15 The first stay rope; 16 The first pulley; 161 The second pulley; 17 Chute; 18 Piston; 181 Center hole; 19 Filter screen; 20 End plate; Mouth; 21 sleeve; 211 second drain port; 22 sealing ring; 23 spring; 24 baffle plate; 25 guide rail; 26 connecting rod; 27 impact plate; 28 hinge.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

Embodiment one

As shown in Figures 1-6, this embodiment proposes a rainwater discarding device for rainwater collection, including a box body 1, which has a storage space inside the box body 1, and a partition plate 5 is arranged in the box body 1, and the partition plate 5 The inner space of the box body 1 is divided into two parts, and the discarding pipe 4 is arranged under the partition plate 5, and the water inlet pipe 2 and the water outlet pipe 3 are arranged above the partition plate 5, and the water inlet pipe 2 and the water outlet pipe 3 The elevation and the neck of the pipe are consistent; the discarding flow pipe 4, the water inlet pipe 2, and the water outlet pipe 3 are respectively connected with the box body 1; the partition plate 5 is provided with a water outlet 6; The tank 1 is also provided with an eccentrically hinged water collecting bucket 10, the water collecting bucket 10 is rotatably connected with the inner wall of the casing 1 through a pin shaft, and the pin shaft is arranged at the top position of the water collecting bucket 10.

A counterweight 14 is arranged in the box body 1, and a first pulley 16 is connected to the inner wall of the box body 1. The top of the counterweight 14 is connected to the bottom of the water collecting bucket 10 through a first stay rope 15, and the first stay rope 15 is hung around the first pulley. On the pulley 16; the inclination of the water collection bucket 10 can be realized through the counterweight 14; the blocking plate 7 adapted to the water outlet 6 is slidably connected to the top of the partition plate 5, and specifically, the partition plate 5 is provided with a slide rail , the relative sliding connection between the blocking plate 7 and the slide rail; one end of the blocking plate 7 is connected with a tension spring 9, and the other end of the tension spring 9 is connected with the inner wall of the box body 1, and the second pulley 161 is connected with the inner wall of the box body 1. The blocking plate 7 is connected to the bottom end of the counterweight 14 through the second stay rope 12 ; the second stay rope 12 is hung on the second pulley 161 .

In order to prevent the inclination of the water collecting bucket 10 from being excessive, the inner wall of the box body 1 is connected with a boss 13, and the boss 13 is arranged under the counterweight 14, which can play a role of receiving, and the counterweight 14 can be pressed on the surface of the boss 13; There is a threading hole inside the table 13, and one end of the second stay rope 12 passes through the threading hole to be connected with the counterweight 14, and the threading hole can play a guiding role.

The blocking plate 7 is provided with some second permeable holes, so that the rainwater above the dividing plate 5 flows into the below of the dividing plate 5; The first permeable holes 101 are provided on the upper surface, and the first permeable holes 101 are tiny holes. There is rain for subsequent spins. The second permeable hole is also a tiny hole.

One end of the water inlet pipe 2 is also connected with an end plate 20, and the end plate 20 is provided with a through hole, and a sealing ring 22 is installed in the through hole; Together, the piston 18 is provided with a central hole 181; one end of the piston 18 is connected to a sleeve 21 with one end open and one end closed, and the central hole 181 communicates with the inside of the sleeve 21; rainwater can flow into the sleeve 21 through the central hole 181; The other end of the sleeve 21 passes through the sealing ring 22 , and the cylinder wall of the sleeve 21 is in close contact with the sealing ring 22 .

A spring 23 is arranged in the water inlet pipe 2, and one end of the spring 23 is connected with the piston 18, and the other end is connected with the end plate 20; Rainwater flows into the water collection bucket 10; the water inlet pipe 2 is provided with a first drain 201 with the opening facing downward, and the rainwater discharged through the first drain 201 flows into the box body 1; it also includes a plug for blocking the first drain 201 The baffle 24 is slidably connected with the outer wall of the water inlet pipe 2 , and the baffle 24 is connected with the outer wall of the sleeve 21 through a connecting rod 26 . Specifically, two guide rails 25 are connected to the outer wall of the water inlet pipe 2, and the connecting rod 26 is slidingly connected with the guide rails 25; the two guide rails 25 are located on the same side of the first water outlet 201; When the guide rail 25 of the port 201 is in contact with each other, the baffle plate 24 completely blocks the first water outlet 201 ;

When the spring 23 is not compressed, that is, in the initial state, the piston 18 and the baffle 24 are respectively arranged on both sides of the first water outlet 201, the piston 18 is located on the right side of the first water outlet 201 and the baffle 24 is located on the first water outlet. On the left side of the port 201, at this time, the first drain port 201 is fully opened; and, at this time, the second drain port 211 is completely located inside the water inlet pipe 2, and due to the sealing effect of the sealing ring 22, rainwater can only pass through the first drain port 201 discharge; in the initial state, the counterweight 14 pulls the water collection bucket 10 to be inclined by the first stay cord 15, and in the initial state, the counterweight 14 is pressed on the surface of the boss 13. At this time, the extension spring 9 is not Elongated, the blocking plate 7 is on the side of the water outlet 6, and the water outlet 6 is fully opened.

As shown in Figure 9, for convenience, the water discharged from the second drain port 211 accurately flows into the water collection bucket 10, and the whole device also includes an arc-shaped chute 17, which is arranged below the water inlet pipe 2, and one end of the chute 17 is connected to the bottom of the water inlet pipe 2. The water inlet pipe 2 or the guide rail 25 are connected. In this embodiment, one end of the chute 17 is connected to one of the guide rails 25; ; The rainwater drained through the second outlet 211 falls into the chute 17 and collects and flows into the water collecting bucket 10 . It should be noted that the chute 17 can also play a position-limiting role. When the water collection bucket 10 rotates to the vertical state, the upper edge of the water collection bucket 10 is engaged with the chute 17; Mouth diameter.

In order to collect clean rainwater conveniently, the piston 18 is also connected with a filter screen 19, which can play a certain role in filtering.

The setting mode of filter screen 19 has two kinds, and wherein a kind of is protruding type, and another kind is fitting type. In this embodiment it may be a prominent style.

The present invention also proposes a method for using a rainwater abandonment device for rainwater collection, comprising the steps of:

In the initial state, the water collecting bucket 10 is inclined, the first water outlet 201 is fully opened, and the second water outlet 211 is completely located inside the water inlet pipe 2; the water outlet 6 is also fully opened; the compression of the spring 23 is zero, and the pulling of the pull rope The length is also zero.

Step 1: In the early stage of rainfall, the initial rainwater flows into the water inlet pipe 2. Due to the small rainfall in the early stage of rainfall, due to the barrier of the piston 18, the flow rate of the initial rainwater is not enough to push the piston 18 to move, and the initial rainwater can only pass through the first outlet 201 Discharge, flow into the partition plate 5, and then flow to the discarding flow pipe 4 through the water outlet 6 opened by the partition plate 5, and the initial rainwater is discharged by the discarding flow;

Step 2: As the rainfall increases, a large flow of rainwater flows into the water inlet pipe 2, and the large flow of rainwater impacts the piston 18. The flow of rainwater is enough to make the piston 18 compress the spring 23 and move to the right, and drive the sleeve 21 Move to the right; when the sleeve 21 is moving, the second drain port 211 also moves to the right and enters the box body 1, realizing the communication between the second drain port 211 and the inside of the box body 1; when the sleeve 21 moves to the right Also can drive connecting rod 26 to move to the right, and connecting rod 26 moves to the right and drives baffle plate 24 to move to the right and first water outlet 201 is blocked; Make rainwater flow in the water collection bucket 10 through the second water outlet 211 or first through the second water outlet 211 then flows into the water collection bucket 10 through the chute 17; as the water in the water collection bucket 10 continues to increase, the water collection bucket 10 will overcome the resistance of the counterweight 14 and rotate, and the water collection bucket 10 will drive the counterweight 14 during rotation. Move up, and at the same time, the counterweight 14 will also drive the blocking plate 7 to move to the right through the second stay rope 12, and the tension spring 9 will generate elastic force, and the blocking plate 7 will block the water outlet 6; because the water intake is much larger than the water outlet 6 The amount of drainage, the rainwater in the box body 1 is constantly increasing until it is discharged from the water outlet and collected.

Step 3: In the later stage of the rainfall, with the decrease of rainfall, under the elastic force of the spring 23, the piston 18 automatically resets, and the baffle plate 24 also automatically resets; Impurities are discharged through the first water outlet 201 and fall into the box body 1 under the push of the piston 18; the rainwater stored in the water collection bucket 10 is discharged through the first water permeable hole 101, and the rainwater stored in the box body 1 is discharged through the second water hole. Finally, it is discharged through the jettison pipe 4; as the rainwater in the water collecting bucket 10 continuously decreases, under the action of the counterweight 14, the water collecting bucket 10 gradually rotates and tilts and finally returns to the initial state. Under the elastic force of the extension spring 9, The blocking plate 7 also returns to the original state, realizing automatic reset.

Embodiment two

As shown in Figures 7-8, the other structures are the same as the first embodiment, the difference is that an impact plate 27 is also provided in the water inlet pipe 2, and the top of the impact plate 27 is hinged with the inside of the water inlet pipe 2, and the impact plate 27 can pass through The hinge is hinged with the water inlet pipe 2 inner walls. In order to facilitate the rotation of the impact plate 27, the filter screen 19 in this embodiment adopts a fitting type. Specifically, the surface of the piston 18 is provided with a fitting groove, and the filter screen 19 is fitted in the fitting groove. Piston 18 sides are flush.

In the above step 1, at the initial stage of rainfall, the initial rainwater flows into the water inlet pipe 2. Due to the barrier of the impact plate 27, the flow rate of the initial rainwater is not enough to push the impact plate 27 to rotate, so that the piston 18 cannot be moved, and the initial rainwater is discarded; In step 2, as the rainfall increases, the rainwater will first impact the impact plate 27, and the impact plate 27 rotates. During the rotation, the impact plate 27 will push the piston 18 to move to the right, so that the rainwater flows into the water collection bucket through the second drain port 211 10 and finally complete the collection of rainwater. Utilize impact plate 27, play blocking effect when rainfall is small, play the effect of pushing piston 18 when rainfall is heavy.

It can be seen from the above two embodiments that the present invention realizes self-rotation by utilizing the weight change of rainwater in the water-collecting bucket 10 by providing the water-collecting bucket 10 with eccentric hinge, and then can drive the blocking plate 7 to move in linkage, so that the blocking plate 7 can be blocked. The plate 7 blocks the water outlet 6, so that the rainwater is discharged from the outlet pipe 3, and the collection of rainwater is completed, which is convenient for subsequent use; There is a first drain port 201, and the first drain port 201 has a baffle plate 24 linked with the sleeve 21; a second drain port 211 is opened in the sleeve 21, and the position of the second drain port 211 is adjusted by utilizing the change of the rainwater flow rate. Change and linkage to realize the blockage of the first water outlet 201, so that rainwater can enter the water collection bucket 10 through the second water outlet 211, and finally the linkage realizes the rotation of the water collection bucket 10 and the blocking of the water outlet 6; The structural setting, the setting of the 10 parts of the water collection bucket and the setting of the 6 structures of the water outlet, the three parts are ingeniously coordinated, and the early rainwater abandonment and the collection of clean rainwater in the later stage of precipitation are well realized.

By being provided with filter screen 19 on piston 18, can play filtering effect, be convenient to collect clean rainwater, and, because piston 18 is movable, the impurity that is intercepted by filter screen 19 can follow the movement of piston 18 from the first A discharge port 201 is discharged, which realizes the self-cleaning of impurities and prolongs the service life of the filter screen 19 .

To sum up, the present invention automatically completes the switching between the two working states of rainwater abandonment and rainwater collection according to the change of rainwater flow, without power supply and automatic control equipment, and has the advantages of easy repair and maintenance, simple structure, ingenious and reasonable design.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (9)

1. a kind of rainwater collection is used the rainwater abandoning flow device, comprises casing, it is characterized in that, described casing is provided with the dividing plate that box body internal space is divided into two parts, is provided with below described dividing plate The discarding pipe is provided with a water inlet pipe and a water outlet pipe above the partition plate, and the discarding pipe, water inlet pipe, and water outlet pipe are respectively connected with the box body; the partition board is provided with a water outlet; the An eccentrically hinged water collecting bucket is also arranged in the box; a counterweight is arranged in the box, and a first pulley is connected to the inner wall of the box, and the top of the counterweight is connected to the bottom of the water collecting bucket through a first pull rope, so The first pull rope is hung on the first pulley; a blocking plate that is compatible with the water outlet is slidably connected to the top of the partition plate, and one end of the blocking plate is connected to a tension spring. The other end of the spring is connected with the inner wall of the box, the inner wall of the box is connected with a second pulley, and the blocking plate is connected with the bottom end of the counterweight through a second stay rope; the second stay rope is hung around the on the second pulley; the blocking plate is provided with a plurality of second permeable holes; the water collecting bucket is provided with a plurality of first permeable holes; One end of the water inlet pipe is also connected to an end plate, and the end plate is provided with a through hole, and a sealing ring is installed in the through hole; a piston is also movably arranged in the water inlet pipe, and the piston is provided with a central hole; One end of the piston is connected to a sleeve with an open end and a closed end; the central hole communicates with the inside of the sleeve; the other end of the sleeve passes through the sealing ring, and the wall of the sleeve is in contact with the sleeve. The sealing ring is tightly fitted; a spring is arranged in the water inlet pipe, one end of the spring is connected with the piston, and the other end is connected with the end plate; the wall of the sleeve is provided with at least one second Outlet, the rainwater flowing out through the second outlet flows into the water collection bucket; the water inlet pipe is provided with a first outlet with the opening facing downward, and the rainwater discharged through the first outlet flows into the box; it also includes a A baffle for blocking the first water outlet, the baffle is slidably connected to the outer wall of the water inlet pipe, and the baffle is connected to the outer wall of the sleeve through a connecting rod. 2. A rainwater discarding device for rainwater collection according to claim 1, characterized in that, when the spring is not compressed, the piston is located on the right side of the first water outlet and the baffle is located on the left side of the first water outlet, The first water outlet is fully opened; the second water outlet is completely located inside the water inlet pipe; in the initial state, the counterweight pulls the water collecting bucket through the first pull rope to form an inclined shape. 3. A rainwater discarding device for rainwater collection according to claim 2, wherein two guide rails are connected to the outer wall of the water inlet pipe, and the connecting rod is slidably connected to the guide rails; Located on the same side of the first drain; when one end of the baffle is in contact with the guide rail close to the first drain, the baffle completely blocks the first drain; and the second drain completely drains from the inlet pipe Move out and enter into the inside of the access box. 4. A rainwater discarding device for rainwater collection according to claim 3, further comprising an arc-shaped chute, the chute is arranged below the water inlet pipe, and one end of the chute is connected to the The water inlet pipes or guide rails are connected; the chute is arranged obliquely, and the lower end of the chute is located above the mouth of the water collecting bucket; the rainwater discharged through the second outlet falls into the chute to collect and flows into the water collecting bucket. 5. A rainwater discarding device for rainwater collection according to claim 1, wherein a boss is connected to the inner wall of the box, a rope hole is opened inside the boss, and the second pull cord One end of the rope passes through the rope hole and is connected with the counterweight. 6 . The rainwater discarding device for rainwater collection according to claim 1 , wherein the piston is also connected with a filter screen. 6 . 7. A rainwater discarding device for rainwater collection according to claim 6, wherein a fitting groove is provided on the surface of the piston, and the filter screen is fitted into the fitting groove, and the filter screen The side of the piston is flush with the side of the piston. 8. A rainwater discarding device for rainwater collection according to claim 1, 6 or 7, wherein an impact plate is also arranged in the water inlet pipe, and the top of the impact plate is in contact with the inside of the water inlet pipe. hinged. 9. A method for using a rainwater abandonment device for rainwater collection, characterized in that, adopting a rainwater abandonment device for rainwater collection according to any one of claims 1-8, comprising the steps of: Step 1: In the initial stage of rainfall, the initial rainwater flows into the water inlet pipe. Due to the obstruction of the piston, the flow of the initial rainwater is not enough to push the piston to move. The water outlet opened by the partition flows to the jettison pipe, and the initial rainwater is discharged by the jettison; Step 2: As the rainfall increases, rainwater flows into the water inlet pipe, and the rainwater impacts the piston. The flow of rainwater is enough to make the piston compress the spring and move to the right, and drive the sleeve to move to the right; when the sleeve is moving, the first The second drain port also moves to the right and enters the box to realize the connection between the second drain port and the inside of the box; when the sleeve moves to the right, it will also drive the connecting rod to move to the right, and the rightward movement of the connecting rod will drive the baffle to move to the right. Block the first drainage port; make rainwater flow into the water collection bucket through the second drainage outlet; as the water in the water collection bucket continues to increase, the water collection bucket will overcome the resistance of the counterweight and rotate, and the water collection bucket will rotate during the rotation process. Drive the counterweight to move up, and at the same time, the counterweight will drive the blocking plate to move to the right through the second pull rope, the tension spring will generate elastic force, and the blocking plate will block the water outlet; since the water intake is much greater than the discharge at the water outlet, The rainwater in the box increases continuously until it is discharged from the water outlet and collected.

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