CN219219267U - Environment-friendly automatic drainage system suitable for low-lying area - Google Patents

Abstract

The utility model discloses an environment-friendly automatic drainage system suitable for low-lying areas, which comprises a structural frame and a hard drain pipe, wherein two sides of the hard drain pipe are plugged by rotary pistons, the structural frame is spliced with a slidable light plate and a pulley base, the slidable light plate is spliced with a floating ball-light plate-pulley member, the pulley base is spliced with a fixed base, a water inlet string of the hard drain pipe is connected with the slidable light plate through a pulley block, and a water outlet string is connected with the fixed base through the pulley block. The system can rapidly and timely discharge accumulated water in the low-lying area, and can eliminate potential safety hazards while providing convenience for resident life. The energy conversion mode of the system is different from that of the traditional electric power, fuel and other systems, only the internal energy conversion of mechanical energy is involved, the failure rate is low, the environment pollution caused by energy conversion is avoided, the carbon emission is avoided in operation, the layout is not limited by the surrounding topography of a low-lying area, the structure is simple, the manufacturing cost is low, and the quality is controllable.

Description

Environment-friendly automatic drainage system suitable for low-lying area

Technical Field

The present utility model relates to drainage systems, and more particularly to automatic drainage systems for low-lying areas. The system is an automatic drainage system which does not depend on common methods such as manpower, electric power or fuel, is not limited by the surrounding topography of a low-lying area, and has the advantages of simple structure, low cost and controllable quality.

Background

In engineering construction, such as extension engineering, drainage engineering and the like, the engineering construction is often limited by objective conditions such as design elevation, topography and the like, the traffic road surface or drainage elevation of engineering facilities such as small structures and the like is lower than the elevation of surrounding ground surfaces, and water can not be discharged in rainy seasons, so that the safety of the engineering facilities is influenced, and the production and travel demands of surrounding residents are also influenced.

The current common drainage measures comprise small-sized electric or fuel drainage equipment, a matched drainage system and the like, and the equipment purchase and installation cost is high, the economical efficiency is poor, and the popularization is inconvenient. Carbon emission generated in operation also causes certain environmental pollution, long-term exposure also needs to be matched with corresponding auxiliary facilities, and meanwhile needs to be manually matched for use.

Based on the above situation, there is a need to invent an automatic drainage system which is suitable for low-lying areas, has a simple structure, is energy-saving and environment-friendly.

Disclosure of Invention

The utility model aims to provide an automatic drainage system for a low-lying area, which is energy-saving, environment-friendly, simple in structure and convenient to maintain. The system not only can fully utilize the siphonage to solve the problem of ponding in low-lying areas, but also can be flexibly adjusted according to site topography, and has strong applicability.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the environment-friendly automatic drainage system suitable for the low-lying area comprises a structural frame and a hard drain pipe, wherein the hard drain pipe is fixed on the structural frame, a water inlet is formed in the left side of the hard drain pipe, a water outlet is formed in the right side of the hard drain pipe, two sides of the hard drain pipe are blocked by rotary pistons, and a water filling port is formed in the top of the hard drain pipe;

the rotary piston center top is equipped with torsion spring, the horizontal pole is connected at torsion spring top, the horizontal pole is fixed inside the stereoplasm drain pipe, the inside L type pipeline of crossing that is equipped with of rotary piston, L type pipeline delivery port is located the rotary piston outer wall and slightly protrudes, the stereoplasm drain pipe is in L type pipeline delivery port is equipped with the recess with stereoplasm drain pipe water inlet or outlet rotation area, rotary piston center bottom is equipped with rotatory handle, L type pipeline of crossing is driven down and is rotated by rotary piston, L type pipeline top of crossing avoid torsion spring and rotary piston junction, rotary piston rotates the back, drives L type pipeline of crossing is rotatory and stereoplasm drain pipe water inlet or outlet intercommunication.

The utility model further discloses the following technology:

preferably, the upper areas of the rotary pistons at the two sides of the hard drain pipe are always filled with water, the water injection port is in a closed state in the working state of the drain system, the water filling state in the pipe is checked through the water injection port in the non-working state, if the water is not fully filled, the water is supplemented through the water injection port, and the elevation of the rotary piston at the drain outlet of the hard drain pipe is lower than that of the rotary piston at the water inlet.

Preferably, the structural frame is spliced with a slidable light plate and a pulley-bearing base, the slidable light plate is spliced with a floating ball-light plate-pulley component, and the pulley-bearing base is spliced with a fixed base;

pulley blocks are arranged at the bottom, the left side and the right side of the structural frame, pulleys are arranged at the bottoms of the two sides inside the hard drain pipe, rollers are arranged on the front and rear sides of the right side of the slidable light plate,

a groove is formed in the left side of the structural frame; roller tracks are arranged on the front side and the rear side of the groove; the roller track is connected with rollers of the slidable light plate;

the water inlet string of the hard drain pipe is connected with the slidable light plate through the pulley block, and the water outlet string is connected with the fixed base through the pulley block.

Preferably, the splicing groove on the left side of the slidable light plate is combined with the splicing protrusion of the floating ball-light plate-pulley component, the floating ball is arranged above the floating ball-light plate-pulley component, the light plate is arranged in the middle, the pulley is arranged at the bottom, the splicing groove is arranged on the left side, the splicing protrusion is arranged on the right side, and the slidable light plate can move up and down along the roller track in the structural frame groove under the traction of the floating ball or dead weight.

Preferably, a floating ball is arranged above the slidable light board, a through hole is arranged on the top surface and the bottom surface of the left part, a splicing groove is arranged on the left side surface, and a hollow rectangular closed hook is arranged at the bottom;

the front side and the rear side of a rotary handle of a rotary piston at the water inlet of the hard drain pipe are connected with horizontal strings, the horizontal strings are converted into vertical strings through pulleys at the water inlet side of the hard drain pipe, then are converted into horizontal strings through pulleys at the left side of the structural frame, and the horizontal strings are connected with hollow rectangular closed hooks at the bottom of the slidable light plate through pulleys at the left side of the structural frame;

the pulley is arranged at the top of the pulley-carrying base, the splicing groove is formed in the left side of the pulley-carrying base, the splicing protrusion is formed in the right side of the pulley-carrying base, the splicing groove is formed in the bottom of the left side of the structural frame, and the splicing protrusion on the right side of the pulley-carrying base is spliced with the splicing groove of the structural frame;

the front side and the rear side of a rotary handle of a rotary piston at the water outlet of the hard drain pipe are connected with horizontal strings, the horizontal strings are converted into vertical strings through pulleys at the side of the water outlet of the hard drain pipe, then are converted into horizontal strings through pulleys at the right side of the structural frame, and the horizontal strings are connected with a fixed base through pulleys of the structural frame, pulleys with pulley bases and pulleys of floating ball-light plate-pulley components.

Preferably, the working principle of the system is as follows:

when the water level of the low-lying part rises, the automatic drainage system causes the floating balls on the upper parts of the slidable light plates and the floating ball-light plate-pulley members to generate upward buoyancy, so that the roller track in the left groove of the structural frame is driven to rise, the rotary handle at the bottom of the rotary piston is rotated through the thin rope to rotate the water inlet and the water outlet through the pulley block, so that the rotary piston rotates, the rotary piston drives the water passing pipe in the water inlet and the water outlet to rotate along the inner groove of the hard drain pipe and be communicated with the water inlet and the water outlet, the torsional spring on the rotary piston at the water inlet and the water outlet is simultaneously caused to shrink and deform, the automatic drainage system enters a working state, under the siphon effect, the accumulated water at the left low-lying part of the automatic drainage system is discharged to a right drainage area, and after the accumulated water at the low-lying part of the automatic drainage system is gradually discharged, the slidable light plates and the floating ball-light plate-pulley members are driven to rotate under the action of the pulley block, the rotary light plates and the floating ball-light plate-pulley members are driven to rotate along the left groove of the roller track, and the water inlet and the water outlet are simultaneously rotated along the inner groove of the hard drain pipe, and the rotary spring at the water inlet and the water outlet are simultaneously rotated along the inner groove of the hard drain pipe, and the inner groove of the water inlet and the water outlet are separated, and the self-rotating state is caused to rotate along the inner groove of the water inlet and the water outlet, and the rotary piston rotates.

Preferably, the water outlet at the lower part of the L-shaped water passing pipeline in the rotary piston is tightly attached to the inner groove of the hard drain pipe before being communicated with the water inlet or the water outlet, and is in a closed state.

Preferably, the contact area of the rotary piston and the hard drain pipe is coated with a lubricating liquid.

Preferably, the top of the fixed base is consistent with the elevation of the bottom of the middle light plate of the leftmost floating ball-light plate-pulley component, so that the floating ball-light plate-pulley component and the slidable light plate form a whole when the water level in the groove is low.

The utility model has the beneficial effects that:

(1) The energy conversion mode of the system is different from the traditional power, fuel and other systems, and only relates to internal energy conversion of mechanical energy, so that the system has low failure rate and no environmental pollution caused by energy conversion, thereby having certain environmental protection;

(2) The system is fully automatic, no other manual operation is needed after the installation is finished, and only periodic overhaul and maintenance are needed;

(3) The system has strong applicability, the whole structure can be adjusted according to the terrain and the actual situation, and meanwhile, the system has simple structure, convenient maintenance and good economic and technical benefits.

(4) The water accumulated in the low-lying area is discharged quickly and timely, and potential safety hazards are eliminated while convenience is brought to life of residents.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of an automatic drain system;

FIG. 2 is a schematic diagram of an automatic drainage system;

FIG. 3 is a detail view of a rotary piston of the water inlet and the water outlet;

FIG. 4 is a detail view of a structural frame;

FIG. 5 is a detail view of a slidable lightweight panel;

FIG. 6 is a detail view of a float-lightweight plate-pulley member;

FIG. 7 is a detail view of a pulley-based base;

FIG. 8 is a detail view of the stationary base;

in the figure: 1. a bottom surface of the depressed area; 2. a groove; 3. float ball-light plate-pulley component; 4. a slidable lightweight panel; 5. a cross bar; 6. a torsion spring; 7. a rotary piston; 8. a water inlet; 9. a fixed base; 10. a pulley-bearing base; 11. a water inlet string; 12. a structural frame; 13. a water filling port; 14. a hard drain pipe; 15. u-shaped pipe clamps; 16. water; 17. a drain port string; 18. a water outlet; 19. a drainage area; 3-1, floating ball-light plate-floating ball on upper part of pulley component; 3-2, floating ball-light plate-pulley member middle light plate; 3-3, floating ball-light plate-pulley component bottom pulley; 3-4, splicing grooves on the left side of the floating ball, the light plate and the pulley component; 3-5, splicing bulges on the right side of the floating ball, the light plate and the pulley member; 4-1, a floating ball at the upper part of the slidable light plate; 4-2, penetrating holes at the top and the bottom of the slidable light plate; 4-3, a splicing groove on the left side of the slidable light board; 4-4, a slidable light plate roller; 4-5, a hollow rectangular closed hook at the bottom of the slidable light plate; 7-1, an L-shaped water passing pipeline; 7-2, rotating the handle; 9-1, fixing a hollow rectangular closed hook at the bottom of the base; 9-2, splicing the bulges at the right side of the bottom of the fixed base; 10-1, a top pulley of a pulley base; 10-2, splicing grooves on the left side of the pulley-bearing base; 10-3, splicing bulges on the right side of the base with the pulley; 11-1, a water inlet string 1;11-2, a water inlet string 2;12-1, a groove on the left side of the structural frame; 12-2, roller tracks in grooves on the left side of the structural frame; 12-3, a structural frame pulley 1;12-4, a structural frame pulley 2;12-5, a structural frame pulley 3;12-6, a structural frame pulley 4;12-7, a structural frame pulley 5;12-8, a structural frame pulley 6;12-9, a structural frame pulley 7;12-10, a structural frame pulley 8;12-11, splicing grooves at the left bottom of the structural frame; 14-1, a rotating groove in the hard drain pipe; 14-2, a hard drain pipe inner pulley; 17-1, drain port string 1;17-2, and a drain string 2.

Detailed Description

The utility model is further described in connection with the following embodiments in order to make the technical means, the creation features, the achievement of the purpose and the effect of the utility model easy to understand.

It should be noted that the words "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings.

Referring to FIGS. 1, 3 and 4, an embodiment 1, an environment-friendly automatic drainage system suitable for a low-lying area comprises a structural frame 12 and a hard drain pipe 14, wherein the hard drain pipe 14 is fixed on the structural frame 12 by a u-shaped pipe clamp 15, pulley blocks (12-3 structural frame pulleys 1;12-4 structural frame pulleys 2;12-5 structural frame pulleys 3;12-6 structural frame pulleys 4;12-7 structural frame pulleys 5;12-8 structural frame pulleys 6;12-9 structural frame pulleys 7;12-10 structural frame pulleys 8) are arranged at the bottom, left side and right side of the structural frame 12, and hard drain pipe inner pulleys 14-2 are arranged at the bottoms of two sides inside the hard drain pipe 14.

The left side of the hard drain pipe 14 is provided with a water inlet 8, the right side of the hard drain pipe 14 is provided with a water outlet 18, and the top of the hard drain pipe 14 is provided with a water filling port 13.

As shown in fig. 1 and 3, two sides of a hard drain pipe 14 are blocked by a rotary piston 7, a torsion spring 6 is arranged at the top of the center of the rotary piston 7, the top of the torsion spring 6 is connected with a cross rod 5, the cross rod 5 is fixed inside the hard drain pipe 14, an L-shaped water passing pipeline 7-1 is arranged inside the rotary piston, the L-shaped water passing pipeline 7-1 is driven to rotate by the rotary piston 7, the top of the L-shaped water passing pipeline 7-1 avoids the joint of the torsion spring 6 and the rotary piston 7, after the rotary piston 7 rotates, the L-shaped water passing pipeline 7-1 is driven to rotate and is communicated with a water inlet 8 or a water outlet 18 of the hard drain pipe 14, a water outlet of the L-shaped water passing pipeline 7-1 is positioned on the outer wall of the rotary piston 7 and protrudes slightly, a rotating groove 14-1 inside the hard drain pipe is arranged in the rotating area of the water outlet 7-1 and the water inlet 8 or the water outlet 18 of the hard drain pipe, and a rotary handle 7-2 is arranged at the bottom of the center of the rotary piston 7.

As shown in fig. 1, 4, 5 and 6, a left groove 12-1 of the structural frame is arranged on the left side of the structural frame 12; the front side and the rear side of the left groove 12-1 of the structural frame are provided with roller tracks 12-2 in the left groove of the structural frame; the roller track 12-2 in the groove on the left side of the structural frame is connected with the slidable light plate roller 4-4; the upper part of the slidable light plate 4 is provided with a floating ball 4-1 at the upper part of the slidable light plate, the top surface and the bottom surface of the left part are provided with through holes 4-2 at the bottom of the top part of the slidable light plate, the left side surface is provided with a splicing groove 4-3 at the left side of the slidable light plate, the front and back surfaces of the right side are provided with a roller 4-4 of the slidable light plate, the bottom is provided with a hollow rectangular closed hook 4-5 at the bottom of the slidable light plate, the left side splicing groove 4-3 of the slidable light plate can be combined with a splicing bulge 3-5 at the right side of the floating ball-light plate-pulley member, the floating ball-light plate-pulley member 3 is provided with a floating ball 3-1 at the upper part of the floating ball-light plate-pulley member, the middle part of the floating ball-light plate-pulley member is provided with a light plate 3-2 at the middle part of the floating ball, the bottom is provided with a floating ball-light plate-pulley member bottom pulley 3-3, the left side is provided with a splicing groove 3-4 at the left side of the floating ball-light plate-pulley member, the right side is provided with a splicing bulge 3-5 at the right side, and the slidable light plate 4 and the floating ball-light plate-pulley member 3 can be spliced into a whole with a floating ball-light plate-3, and a self-weight structure can move along the floating ball track 12 at the upper part and the lower part of the floating ball track 12 in the floating ball.

As shown in fig. 1, 3, 4 and 5, the front side and the rear side of a rotary handle 7-2 of a rotary piston 7 at a water inlet 8 of a hard drain pipe are connected with 11-1 water inlet strings 1 and 11-2 water inlet strings 2, the 11-1 water inlet strings 1 and 11-2 water inlet strings 2 are converted into vertical strings through a pulley 14-2 in the hard drain pipe, then are converted into horizontal strings through a pulley 2 of a 12-4 structure frame and a pulley 3 of a 12-5 structure frame, the horizontal strings are connected into a water inlet string 11 at the bottom of the pulley 2 of the 12-4 structure frame, and the water inlet string 11 is connected with a hollow rectangular closed hook 4-5 at the bottom of a slidable light plate through the pulley 1 of the 12-3 structure frame.

As shown in fig. 1, 3 to 8, the front and rear sides of the rotary handle 7-2 of the rotary piston 7 at the hard drain outlet 18 are connected with the 17-1 drain outlet strings 1, 17-2 drain outlet strings 2, the 17-1 drain outlet strings 1, 17-2 drain outlet strings 2 are converted into vertical strings through the hard drain inner pulleys 14-2, then are converted into horizontal strings through the 12-6 structure frame pulleys 4, 12-7 structure frame pulleys 5, the horizontal strings are connected into a drain outlet string 17 at the bottom of the 12-7 structure frame pulley 5, the drain outlet string 17 is converted into vertical strings through the 12-8 structure frame pulley 6, the vertical strings are converted into horizontal strings through the 12-9 structure frame pulley 7, the horizontal strings are converted into vertical strings through the 12-10 structure frame pulley 8, the vertical strings pass through the top bottom of the slidable lightweight plate, and are connected with the floating ball hollow base closure 9-1 through the pulley base top pulley 10-1 and the floating ball closure 9-3. The top of the fixed base 9 is arranged at the left side of the bottom pulley 3-3 of the leftmost floating ball-light plate-pulley component, and the top elevation of the fixed base 9 is consistent with the bottom elevation of the middle light plate 3-2 of the leftmost floating ball-light plate-pulley component.

As shown in fig. 7 and 4, the top of the pulley base 10 is provided with a pulley base top pulley 10-1, the left side is provided with a pulley base left side splicing groove 10-2, and the right side is provided with a pulley base right side splicing protrusion 10-3. The left bottom of the structural frame 12 is provided with a left bottom splicing groove 12-11 of the structural frame, and the right splicing bulge 10-3 of the pulley base can be spliced with the left bottom splicing groove 12-11 of the structural frame.

As shown in FIG. 8, a hollow rectangular closed hook 9-1 at the bottom of the fixed base is arranged at the bottom of the fixed base 9, and a splicing protrusion 9-2 at the right side of the bottom of the fixed base is arranged at the right side.

As shown in fig. 1, 2, 3 and 4, when the water level of the low-lying place rises, the automatic drainage system causes the floating ball 4-1 at the upper part of the slidable lightweight plate 4 to generate upward buoyancy, and simultaneously causes the floating ball 3-1 at the upper part of the floating ball-lightweight plate-pulley member 3 to generate upward buoyancy, so as to drive the slidable lightweight plate 4 and the floating ball-lightweight plate-pulley member 3 to rise along the roller track 12-2 in the groove at the left side of the structural frame, further rotates the rotary piston bottom rotary handle 7-2 at the water inlet and the water outlet through the pulley block by the water inlet string 11 and the water outlet string 17, further causes the rotary piston 7 at the water inlet 8 and the water outlet 18 to rotate and drives the internal L-shaped water passing pipeline 7-1 to rotate along the rotary groove 14-1 in the hard drain pipe and be communicated with the water inlet 8 and the water outlet 18, and simultaneously causes the torsion spring 6 at the upper part of the rotary piston 7 at the water inlet 8 and the water outlet 18 to generate shrinkage deformation, and the automatic drainage system enters a working state, and under the siphon action, the automatic drainage system discharges the water accumulated water at the low side 1 to the right side to the water drain area 19.

After accumulated water in the low-lying position of the automatic drainage system is gradually drained, under the action of dead weight, the slidable light plate 4 and the floating ball-light plate-pulley component 3 drive the slidable light plate 4 and the floating ball-light plate-pulley component 3 to descend along the roller track 12-2 in the groove on the left side of the structural frame, and simultaneously under the action of the torsion springs 6 on the upper parts of the rotary pistons 7 at the water inlet 8 and the water outlet 18, the rotary pistons 7 at the water inlet 8 and the water outlet 18 rotate and drive the internal L-shaped water passing pipeline 7-1 to rotate along the rotary groove 14-1 in the hard drainage pipe and separate from the water inlet 8 and the water outlet 18, and the automatic drainage system enters a non-working state.

Embodiment 2, the utility model also provides a construction method of the environment-friendly automatic drainage system suitable for the low-lying area, which mainly comprises the following steps:

1) A groove 2 with length, width and height (50 cm multiplied by 50 cm) is excavated on one side of the bottom surface 1 of the low-lying area;

2) According to the height of the bottom of the groove 2 in the low-lying area and the distance from the drainage area 19, the lengths and the heights of the two sides of the structural frame 12 and the hard drain pipe 14, the number of floating ball-light plate-pulley members 3, the number of pulley bases 10, the length of the water inlet string 11 and the length of the water outlet string 17 are determined, and then the slidable light plate 4, the floating ball-light plate-pulley members 3, the pulley bases 10 and the fixed base 9 are assembled in sequence.

3) The left base of the structural frame 12 is placed at the bottom of the groove 2, the right base of the structural frame 12 is placed at the bottom of the drainage area 19, the U-shaped pipe clamps 15 are used for fixing the hard drain pipe 14 on the structural frame 12, both sides of the hard drain pipe 14 are sealed by the rotary pistons 7, the rotary handles 7-2 at the bottom of the left rotary pistons are connected with the slidable lightweight plate 4 through the water inlet thin ropes 11, the rotary handles 7-2 at the bottom of the right rotary pistons are connected with the hollow rectangular sealing hooks 9-1 at the bottom of the fixed base through the water outlet thin ropes 17 through the structural frame 12, the floating ball-lightweight plate-pulley members 3 and the pulley blocks with the pulley bases 10, and after connection is completed, the water inlet thin ropes 11 and the water outlet thin ropes 17 are ensured to be in a tightening state.

4) The hard drain pipe 14 is filled with water 16 through the water filling port 13, and then the water filling port 13 is closed.

5) When the water level in the low-lying area rises, the groove 2 is filled with water at first, then the whole assembled by the slidable light plate 4 and the floating ball-light plate-pulley member 3 rises along the roller track 12-2 in the groove on the left side of the structural frame under the buoyancy action of the floating ball 4-1 on the upper part of the slidable light plate and the floating ball-light plate-pulley member, and then the water inlet string 11 and the water outlet string 17 rotate the rotary piston bottom rotary handle 7-2 at the water inlet and the water outlet through the pulley block, so that the rotary piston 7 at the water inlet 8 and the water outlet 18 rotates to drive the internal L-shaped water pipeline 7-1 to rotate along the rotary groove 14-1 in the hard drain pipe and be communicated with the water inlet 8 and the water outlet 18, and simultaneously the torsion spring 6 at the upper part of the rotary piston 7 at the water inlet 8 and the water outlet 18 generates shrinkage deformation, so that the automatic drain system enters a working state, and the automatic drain system drains the water accumulated at the left low-lying position 1 to the right side drain area 19 under the siphon action.

6) After the accumulated water in the low-lying part 1 is gradually discharged, the slidable light plate 4 and the floating ball-light plate-pulley component 3 descend along the roller track 12-2 in the groove on the left side of the structural frame under the action of dead weight, and simultaneously the rotary piston 7 at the water inlet 8 and the water outlet 18 rotates and drives the internal L-shaped water passing pipeline 7-1 to rotate along the internal rotary groove 14-1 of the hard drain pipe and separate from the water inlet 8 and the water outlet 18 under the action of the torsion spring 6 at the upper part of the rotary piston 7 at the water inlet 8 and the water outlet 18, so that the automatic drain system enters a non-working state.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (4)

1. An automatic drainage system of environmental protection formula suitable for low-lying area, its characterized in that: the novel water-saving type water-saving device comprises a structural frame and a hard water drain pipe, wherein the hard water drain pipe is fixed on the structural frame, a water inlet is formed in the left side of the hard water drain pipe, a water outlet is formed in the right side of the hard water drain pipe, two sides of the hard water drain pipe are plugged by rotary pistons, and a water filling port is formed in the top of the hard water drain pipe;

the rotary piston is characterized in that a torsion spring is arranged at the top of the center of the rotary piston, the top of the torsion spring is connected with a cross rod, the cross rod is fixed inside a hard drain pipe, an L-shaped water passing pipeline is arranged inside the rotary piston, a water outlet of the L-shaped water passing pipeline is positioned on the outer wall of the rotary piston and protrudes slightly, a groove is formed in a rotating area of the water outlet of the L-shaped water passing pipeline and a water inlet or a water outlet of the hard drain pipe, a rotary handle is arranged at the bottom of the center of the rotary piston, the L-shaped water passing pipeline is driven by the rotary piston to rotate, the top of the L-shaped water passing pipeline avoids the joint of the torsion spring and the rotary piston, and after the rotary piston rotates, the L-shaped water passing pipeline is driven to rotate and is communicated with the water inlet or the water outlet of the hard drain pipe;

the structure frame is spliced with the slidable light plate and the pulley-bearing base, the slidable light plate is spliced with the floating ball-light plate-pulley component, and the pulley-bearing base is spliced with the fixed base;

pulley blocks are arranged at the bottom, the left side and the right side of the structural frame, pulleys are arranged at the bottoms of the two sides inside the hard drain pipe, rollers are arranged on the front and rear sides of the right side of the slidable light plate,

a groove is formed in the left side of the structural frame; roller tracks are arranged on the front side and the rear side of the groove; the roller track is connected with rollers of the slidable light plate;

the water inlet string of the hard drain pipe is connected with the slidable light plate through the pulley block, and the water outlet string is connected with the fixed base through the pulley block.

2. An environmental-friendly automatic drainage system suitable for low-lying areas as claimed in claim 1, wherein: the upper areas of the rotary pistons at the two sides of the hard drain pipe are always filled with water, the water filling port is in a closed state in the working state of the drain system, the water filling state in the pipe is checked through the water filling port in the non-working state, if the water is not fully filled, the water is replenished through the water filling port, and the elevation of the rotary piston at the drain outlet of the hard drain pipe is lower than that of the rotary piston at the water inlet.

3. An environmental-friendly automatic drainage system suitable for low-lying areas as claimed in claim 1, wherein: the left splicing groove of the slidable light plate is combined with the splicing protrusion of the floating ball-light plate-pulley component, the floating ball is arranged above the floating ball-light plate-pulley component, the light plate is arranged in the middle, the pulley is arranged at the bottom, the splicing groove is arranged at the left side, the splicing protrusion is arranged at the right side, and the slidable light plate can move up and down along the roller track in the groove of the structural frame under the traction of the floating ball or dead weight.

4. An environmental-friendly automatic drainage system suitable for low-lying areas as claimed in claim 3, wherein: a floating ball is arranged above the slidable light board, a through hole is formed in the top surface and the bottom surface of the left part, a splicing groove is formed in the left side surface, and a hollow rectangular closed hook is arranged at the bottom;

the front side and the rear side of a rotary handle of a rotary piston at the water inlet of the hard drain pipe are connected with horizontal strings, the horizontal strings are converted into vertical strings through pulleys at the water inlet side of the hard drain pipe, then are converted into horizontal strings through pulleys at the left side bottom of the structural frame, and the horizontal strings are connected with hollow rectangular closed hooks at the bottom of the slidable light plate through the pulleys at the left side of the structural frame;

the pulley is arranged at the top of the pulley-carrying base, the splicing groove is formed in the left side of the pulley-carrying base, the splicing protrusion is formed in the right side of the pulley-carrying base, the splicing groove is formed in the bottom of the left side of the structural frame, and the splicing protrusion on the right side of the pulley-carrying base is spliced with the splicing groove of the structural frame;

the front side and the rear side of a rotary handle of a rotary piston at the water outlet of the hard drain pipe are connected with horizontal strings, the horizontal strings are converted into vertical strings through pulleys at the side of the water outlet of the hard drain pipe, then are converted into horizontal strings through pulleys at the right side of the structural frame, and the horizontal strings are connected with a fixed base through pulleys of the structural frame, pulleys with pulley bases and pulleys of floating ball-light plate-pulley components.

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