CN219343099U

CN219343099U - Self-cleaning water surface garbage collection device

Info

Publication number: CN219343099U
Application number: CN202222885662.4U
Authority: CN
Inventors: 叶根喜; 栗艳兵; 刘永启; 严春华; 陈正宗; 蒋斌; 蒋雄伟; 徐知愚
Original assignee: Suzhou Bilan Intelligent Environmental Technology Co ltd
Current assignee: Suzhou Bilan Intelligent Environmental Technology Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-07-14
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a self-cleaning water surface garbage collection device, which comprises an outer barrel, an inner barrel, an isolation net barrel, a filter screen and a drainage mechanism; the outer barrel is provided with a containing cavity and a drain hole; the inner cylinder is accommodated in the accommodating cavity, the inner cylinder has buoyancy, and the inner cylinder can move up and down; the isolation net barrel is accommodated in the inner barrel; the filter screen is accommodated in the isolation net barrel, and can accommodate garbage on the water surface; the drainage mechanism is provided with a blade, and the blade is driven to drain water in the accommodating cavity out of the collecting device through the drainage hole. The drainage mechanism is arranged in the outer barrel, so that the integration level and the attractiveness are improved. The water discharge mechanism adopts the propeller and the blades to discharge the water in the collecting device, so that the water in the collecting device can be discharged, the water can be flushed into the collecting device, and each part in the collecting device is backwashed and cleaned, so that a self-cleaning effect is achieved. The bottom of the isolation net barrel is not provided with water holes, so that the starting time of the device is shortened.

Description

Self-cleaning water surface garbage collection device

Technical Field

The utility model relates to the field of water surface garbage collection, in particular to a self-cleaning water surface garbage collection device.

Background

Some algae, fallen leaves, domestic garbage and other water surface garbage are often floated on water areas such as rivers, lakes and the like, and the floated water surface garbage not only affects the appearance of cities, but also pollutes water quality, and if the water quality is not treated in time, potential safety hazards can be brought to healthy life of residents. But the salvage in a wide water area is very time-consuming, especially the manual salvage speed is very slow, the salvage efficiency is low, the labor intensity is high, the labor and time are wasted, the safety risk is high, the effective supervision of operators is difficult, and the high labor cost is generated, so that the design and use of garbage collection equipment are imperative.

At present, some water surface garbage collection devices exist on the market, some garbage collection capacities are very small, or some structural designs are filtered layer by layer, the filtering and collection effects on the water surface garbage are better, but after long-term use, the inside of the device inevitably deposits silt dirt and the like, the silt dirt deposits on parts inside the device, the device can be influenced to continuously collect the water surface garbage when serious, dirt clogging in the collection device can be avoided, and in the use process, the silt dirt can be cleaned without disassembling the device?

Therefore, in combination with the above problems, it is necessary to provide a new technical solution.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides a self-cleaning water surface garbage collection device, which comprises the following specific technical scheme:

the self-cleaning water surface garbage collection device is characterized by comprising an outer barrel, an inner barrel, a filter screen and a drainage mechanism;

the outer barrel is provided with a containing cavity and a drain hole, and the drain hole is communicated with the containing cavity; the inner cylinder is accommodated in the accommodating cavity, the inner cylinder has buoyancy, and the inner cylinder can move up and down; the filter screen is accommodated in the inner cylinder and can accommodate garbage on the water surface;

the water draining mechanism is configured to drain water in the accommodating cavity out of the collecting device through the water draining hole or push water in the water area into the accommodating cavity through the water draining hole.

As a preferred scheme of self-cleaning surface of water garbage collection device this application, drainage mechanism includes the propeller, fixed mounting has the blade on the output shaft of propeller, and the blade annular is around locating on the output shaft, and the blade forms the contained angle that is less than 90 degrees with the cross section of output shaft.

As a preferable scheme of the self-cleaning water surface garbage collection device, the self-cleaning water surface garbage collection device further comprises a control system, wherein the control system is provided with a forward rotation control module and a reverse rotation control module; the forward rotation control module is configured to drive the blades to forward rotate to discharge water in the accommodating cavity to the outside of the collecting device through the drain holes, and the reverse rotation control module is configured to drive the blades to reverse rotation to push water in the water area into the accommodating cavity through the drain holes.

As a preferred scheme of self-cleaning surface of water garbage collection device this application, still include the isolation barrel, the isolation barrel is arranged in between inner tube and the filter screen, and the filter screen is arranged in the isolation barrel, a plurality of water holes have been seted up to isolation barrel lateral wall.

As a preferable scheme of the self-cleaning water surface garbage collection device, a supporting frame is arranged at the bottom of the outer barrel, the inner barrel is arranged on the supporting frame, and the isolation net barrel is arranged on the supporting frame;

the isolation net barrel is internally provided with a suspension frame, and the filter screen is arranged on the suspension frame.

As a preferable scheme of the self-cleaning water surface garbage collection device, the isolation net barrel is detachably arranged on the supporting frame; and/or

The inner cylinder is a plastic inner cylinder, and the supporting frame is a plastic supporting frame.

As a preferred scheme of the self-cleaning water surface garbage collection device, the inner cylinder is of a cylindrical structure with two ends open, and at least one hollow cavity is formed in the side wall of the inner cylinder.

The outer barrel is provided with a liquid level meter, and the liquid level meter can detect the position of the collecting device in the water area.

As a preferable scheme of the self-cleaning water surface garbage collection device, the length of the hollow cavity is smaller than that of the inner cylinder along the axial direction of the inner cylinder, and the hollow cavity is arranged at one end, close to the bottom, of the side wall of the inner cylinder;

The inner cylinder (2) is provided with an induction device near one end of the upper opening, and the induction device can detect whether a filter screen is placed in the inner cylinder. As a preferable scheme of the self-cleaning water surface garbage collection device, the self-cleaning water surface garbage collection device further comprises a telescopic sealing ring;

the telescopic sealing ring is arranged between the outer barrel and the inner barrel, one end of the telescopic sealing ring is fixedly connected with the outer wall of the inner barrel, the other end of the telescopic sealing ring is fixedly connected with the inner wall of the outer barrel, and one end, close to the upper side, of the telescopic sealing ring is in sealing connection with the outer wall of the inner barrel or the inner wall of the outer barrel.

As a preferred scheme of self-cleaning surface of water garbage collection device, the filter screen includes body portion and extension along the axis direction, the extension is located the one end that the filter screen is close to the filter screen opening, body portion and extension body coupling or components of a whole that can function independently zonulae occludens, the extension is flexible extension.

As a preferable scheme of the self-cleaning water surface garbage collection device, the side wall of the filter screen (4) is provided with an annular hoop (45), the annular hoop (45) is arranged at the joint of the body part (48) and the extension part (49), and the hoop is movably arranged on the isolation net barrel or sleeved outside the isolation net barrel;

The height of the extension part is not less than the distance from the top of the inner cylinder to the top of the isolation net barrel when the inner cylinder moves upwards to the highest position, and the body part does not move up and down along with the inner cylinder.

As a preferable scheme of the self-cleaning water surface garbage collection device, the inner wall of the inner cylinder is provided with a placement step or a placement ring, and the placement step or the placement ring is positioned at one end of the inner cylinder, which is close to the upper opening of the inner cylinder;

the opening part of the filter screen is fixedly provided with a supporting ring, and the supporting ring is movably arranged on the upper opening end of the placing step, the placing ring or the inner barrel.

As a preferred scheme of the self-cleaning water surface garbage collection device, the bottom of the outer barrel or the bottom of the inner barrel is provided with a position collection device, and the position collection device can monitor whether the inner barrel moves up and down.

Compared with the prior art, the self-cleaning water surface garbage collection device has the following beneficial effects:

the drainage mechanism is arranged in the outer barrel, so that the integration level and the attractiveness of the inside of the collecting device can be increased. The water discharge mechanism adopts the propeller and the blades to discharge the water in the collecting device, and the advantage of adopting the propeller is that the water in the collecting device can be discharged, the water can be flushed into the collecting device, and each part in the collecting device is backwashed and cleaned, so that the self-cleaning effect is achieved. Specifically, the propeller can rotate forward and backward, and in normal operation, the propeller rotates forward to drive the blades to discharge water in the collecting device so as to collect water surface garbage; when the collecting device runs for a period of time, some silt dirt or garbage is leaked and deposited in the device, such as the bottom of the outer barrel, the inside of the isolating net barrel and the water holes of the isolating net barrel or the filtering holes of the filter screen, the reversing function of the propeller is started to back flush the collecting device, the propeller reversely rotates to drive the blades to reversely rotate, so that external water is pushed into the collecting device, the inside of the collecting device is reversely flushed, and the flushed water is discharged from the barrel opening of the outer barrel.

The isolation net barrel is detachably mounted, so that the isolation net barrel can be detached and cleaned and maintained after long-term use. The water holes are not formed in the bottom of the isolation net barrel, so that water in the isolation net barrel flows downwards, water flows out of the water holes in the side wall of the isolation net barrel when water is discharged, the bottom of the isolation net barrel is not drained, water flow in the accommodating cavity only flows transversely, longitudinal flow of water caused by water discharge at the bottom of the isolation net barrel is avoided, the longitudinal flow is particularly easy to cause impact on the descending of the inner barrel, suction force of water discharge of the water discharge mechanism acts on the descending movement of the inner barrel more easily and smoothly, the inner barrel descends more smoothly, and particularly when the collecting device is started, the starting time of the collecting device is greatly shortened.

The length of the hollow cavity along the radial direction is smaller than that of the inner cylinder along the radial direction, in the example, the length of the hollow cavity along the radial direction is only two thirds of that of the inner cylinder, of course, the length, the volume or the volume ratio of other hollow cavities can be set according to the relation between the actual gravity and the buoyancy, the volume of the hollow cavity is reduced, the buoyancy of the inner cylinder is reduced, the rising critical water level of the inner cylinder is reduced, the inner cylinder can be lowered without discharging more water after the inner cylinder rises, the garbage collection speed of the device is improved, meanwhile, the collection device can be operated more easily at the moment of starting, the collection device can be operated normally in a shorter time, and the device can be operated normally only for 10 minutes after the volume of the hollow cavity is reduced, so that the starting time of the device is greatly reduced.

This patent is direct to be set up the net barrel of keeping apart on the support frame, has cancelled the net baffle in the outer bucket, and the net baffle is arranged in to the isolation net barrel in the collection device before, but long-time use or manual operation are improper, have a lot of rubbish to pile up on the net baffle, cause the net baffle to hardly wash on the one hand, and on the other hand the net baffle is covered by rubbish, causes drainage mechanism drainage difficulty, influences the collection efficiency of surface of water rubbish. After the net partition plate is canceled, small garbage which is not collected in the filter screen is directly discharged through the water discharging mechanism.

The isolation net barrel can be detachably arranged on the support frame of the outer barrel, and the isolation net barrel is cleaned regularly or irregularly, so that the problem that a drainage mechanism is difficult to drain due to the fact that a drainage waterway is not smooth is avoided. In addition, can also set up the ultrasonic wave, play the mesh of clearance isolation net barrel lateral wall's hole, avoid isolating net barrel lateral wall's downthehole siltation rubbish.

This patent simple structure, easy preparation, convenient to use, manufacturing cost are lower, can fully collect surface of water rubbish completely, collect surface of water rubbish fast, efficient, and the surface of water rubbish of bigger capacity can be collected to one time operation cycle.

The inner barrel continuously rises and descends, water flows towards the center of the inner barrel, garbage on the water surface flows into the filter screen in the inner barrel along with water flow, the inner barrel continuously moves up and down to enable the water flow injected into the inner barrel to stumble, the water surface tension generated by the water surface of the outer barrel towards the center of the inner barrel is large and small, and accordingly the water surface garbage moving towards the center of the inner barrel is continuously accelerated, the collection efficiency of the water surface garbage is accelerated, and meanwhile the radiation area of the garbage collected by the collection device is enlarged.

The filter screen is preferably a flexible filter screen, and the filter screen is provided with the hoops and the longer length, so that the filter screen does not ascend and descend along with the inner cylinder, the weight born by the inner cylinder when ascending is reduced, the inner cylinder is helped to prolong the up-and-down moving time and frequency, more water surface garbage can be helped to be collected, the maximum capacity of the filter screen for collecting the water surface garbage is greatly improved, and the efficiency for collecting the water surface garbage is helped to be improved.

When the inner cylinder moves upwards, water reserved between the inner cylinder and the outer cylinder is pushed upwards by the telescopic sealing ring and then is discharged out of the outer cylinder from the through hole, if the through hole is not formed, water reserved between the inner cylinder and the outer cylinder is pushed upwards by the telescopic sealing ring and then is flushed upwards from a gap between the outer cylinder and the inner cylinder, so that water garbage cannot flow into the inner cylinder. The balance plate is arranged, the balance plate can isolate the water flow at the through hole, the level above the balance plate is kept stable and free from flowing, and the surrounding water surface garbage can be conveniently collected to the inner cylinder. Preferably, the through holes are strip holes, so that the garbage such as sediment, leaves and branches between the inner barrel and the outer barrel can be conveniently discharged out of the collecting device along with water flow from the strip holes.

The upper pulley and the lower pulley are arranged, the upper pulley and the lower pulley are both used for stably moving the inner cylinder up and down, shaking is avoided when the inner cylinder moves up and down, the inner cylinder is inclined and sunken, and laminar flow is further generated at the moment that water enters an upper opening of the inner cylinder, so that water inflow is small, and water garbage is not easy to collect; and set up pulley and lower pulley, can avoid producing the friction easily between inner tube and the outer bucket inner wall or the balance plate, avoid friction damage between inner tube and the outer bucket, also be favorable to being convenient for collect surface of water rubbish simultaneously.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a self-cleaning surface garbage collection device according to the present patent;

FIG. 2 is a schematic view of the cross-sectional structure in the direction A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the outer barrel, inner barrel and drain mechanism of the present patent;

FIG. 4 is a schematic perspective view of the outer tub according to the present patent;

FIG. 5 is a schematic perspective view of an inner barrel according to the present patent;

FIG. 6 is a schematic perspective view of an isolation net barrel according to the present patent;

FIG. 7 is a schematic view of the cross-sectional structure in the B direction of FIG. 6;

FIG. 8 is a schematic perspective view of a filter screen according to the present disclosure;

fig. 9 is a schematic perspective view of the telescopic seal ring according to the present patent.

The device comprises a 1-outer barrel, a 2-inner barrel, a 3-isolation net barrel, a 4-filter screen, a 5-telescopic sealing ring, a 9-drainage mechanism, a 101-containing cavity, a 102-barrel opening, a 103-drainage hole, a 104-supporting frame, a 107-through hole, a 108-balancing plate, a 110-upper pulley, a 111-lower pulley, a 21-upper opening, a 22-lower opening, a 23-hollow cavity, a 27-placement step, a 30-water passing hole, a 32-suspension frame, a 33-baffle ring, a 34-horn opening, a 41-filter hole, a 42-collecting opening, a 43-supporting ring, a 44-underframe, a 45-cuff, a 46-pull ring, a 47-bottom handle, a 48-body part, a 49-extension part, a 51-inner barrel flange, a 52-outer barrel flange, 91-blades and a 92-propeller.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "provided with," "connected," "mounted," "sleeved," "opened," "secured," etc. should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples

Referring to fig. 1 to 9, as shown in fig. 1 to 9, the utility model discloses a self-cleaning water surface garbage collection device, which comprises an outer barrel 1, an inner barrel 2, an isolation net barrel 3, a filter screen 4, a telescopic sealing ring 5, a drainage mechanism 9 and a control system;

the outer barrel 1 is provided with a containing cavity 101 and a drain hole 103, and the drain hole 103 is communicated with the containing cavity; the inner cylinder 2 is accommodated in the accommodating cavity, the inner cylinder 2 has buoyancy, and the inner cylinder can move up and down; the isolation net barrel 3 is accommodated in the inner barrel 2, and a plurality of water passing holes 30 are formed in the isolation net barrel 3; the filter screen 4 is accommodated in the isolation net barrel 3, a plurality of filter holes 41 are formed in the filter screen 4, and the filter screen can accommodate garbage on the water surface;

The drainage mechanism 9 is configured to be able to drain water in the accommodating chamber 101 out of the collecting device through the drainage hole 103 or to push water in the water area into the accommodating chamber 101 through the drainage hole 103. The water draining mechanism has double functions, can drain water in the accommodating cavity, ensures that the collecting device automatically and continuously collects water garbage, and can automatically and continuously clean all parts in the accommodating cavity by reversely flushing the accommodating cavity of the outer barrel.

The collecting device is arranged in the water through the lifting support, and the control system can control the operation of the collecting device.

The outer barrel 1 is of a cylindrical structure with one end open, the outer barrel 1 comprises a containing cavity 101, a barrel opening 102 and a drain hole 103, the barrel opening 102 and the drain hole 103 are communicated with the containing cavity 101, the inner diameter of the containing cavity 101 is consistent with that of the barrel opening 102, and the drain hole 103 is formed in the side wall or the bottom of the outer barrel 1; preferably, the drain hole is arranged at one end of the side wall of the outer barrel 1 close to the bottom;

the inner cylinder 2 is accommodated in the accommodating cavity 101, the inner cylinder 2 is of a cylindrical structure with two ends open, the side wall of the inner cylinder 2 is provided with a hollow cavity 23 or a floating body is arranged on the inner cylinder, and the inner cylinder can move up and down. Preferably, the top of the inner cylinder 2 extends out of the accommodating cavity 101.

The isolating net barrel 3 is accommodated in the inner barrel, as shown in fig. 2 and fig. 6-7, the isolating net barrel 3 is of a hollow cylindrical structure with one end open, the inner barrel 2 is sleeved outside the isolating net barrel 3, the top height of the isolating net barrel 3 is lower than that of the inner barrel 2, and a gap is formed between the isolating net barrel 3 and the inner barrel 2. Preferably, a suspension frame 32 is arranged at the bottom of the isolation net barrel 3, and the bottom of the filter net is movably arranged on the suspension frame 32;

the filter screen 4 is of a cylindrical structure with one end open, the filter screen 4 is accommodated in the isolation net barrel 3, a plurality of filter holes 41 are formed in the filter screen 4, and the filter screen can accommodate garbage on the water surface;

the telescopic sealing ring 5 is arranged between the outer barrel 1 and the inner barrel 2, as shown in fig. 2-3 and 9, the telescopic sealing ring 5 is sleeved on the inner barrel 2, one end of the telescopic sealing ring 5 is fixedly connected with the inner barrel, and the other end of the telescopic sealing ring 5 is fixedly connected with the inner wall of the outer barrel 1. Preferably, one end of the telescopic sealing ring 5 close to the upper side is in sealing connection with the outer wall of the inner cylinder or the inner wall of the outer cylinder 1.

The drainage mechanism 9 comprises a blade 91 and a propeller 92, wherein the blade 91 is fixedly arranged on an output shaft of the propeller 92, the blade 91 is annularly arranged on the output shaft in a winding manner, and an included angle smaller than 90 degrees is formed between the blade and the cross section of the output shaft. In an example, the plurality of blades are annularly arranged on the output shaft, and the plurality of blades form an included angle smaller than 90 degrees with the cross section of the output shaft so that the blades can drain water. In the example, the propeller is arranged at the bottom of the outer barrel, and blades on an output shaft of the propeller extend into the drain hole. The control system is also provided with a forward rotation control module and a reverse rotation control module; the forward rotation control module is configured to drive the blades 91 to forward rotate to discharge water in the accommodating cavity 101 to the outside of the collecting device through the water discharge holes 103, namely, the forward rotation control module is started, and the impeller can discharge water in the accommodating cavity to the outside of the collecting device through the water discharge holes 103; the reverse rotation control module is configured to drive the blades 91 to reverse rotation to push water in the water area into the accommodating cavity (101) through the water discharge holes 103, namely, the reverse rotation control module is started, and the impeller can push water outside the collecting device into the accommodating cavity from the water discharge holes 103. When the collecting device works normally, the forward rotation control module is started to realize that the water in the accommodating cavity is discharged out of the collecting device by the water discharging mechanism. The reverse rotation control module is arranged to realize regular or irregular flushing in the collecting device, after the collecting device runs for a period of time, sediment dirt is avoided, even large garbage is blocked and accumulated in the collecting device, the reverse rotation control module is started through the control system, the propeller reversely rotates, the blades synchronously reversely rotate, the blades push water outside the collecting device from the water discharge hole to the accommodating cavity, the back flushing is carried out in the accommodating cavity, especially, the bottom of the outer barrel, the bottom of the isolating net barrel, the water discharge hole, the sediment dirt and other garbage on the filter screen are flushed, and the flushed water is discharged through the barrel mouth of the outer barrel.

Outer barrel

As shown in fig. 1 to 4, the outer tub 1 includes a receiving chamber 101, a tub mouth 102, and a drain hole 103; the outer barrel 1 is of a cylindrical structure with one end open, the barrel opening 102 and the drain hole 103 are both communicated with the accommodating cavity 101, the barrel opening 102 corresponds to the bottom of the outer barrel 1, and the drain hole 103 is formed in the side wall or the bottom of the outer barrel 1. In an example, the drain hole is disposed at one end of the sidewall of the outer tub 1 near the bottom.

The outer barrel 1 bottom is provided with support frame 104, inner tube 2 is placed on support frame 104, isolation net bucket 3 demountable installation is on support frame 104 of outer barrel 1, in the example, isolation net bucket 3 bolted connection is on support frame 104, and support frame 104 is the plastics support frame, and the inner tube is the plastics inner tube, so the inner tube is in continuous rising decline in-process, although frequently contact with the support frame, does not cause collision damage to inner tube and support frame. In the example, the support frame covers the outside of the propeller 92. Preferably, a position acquisition device is arranged on the support frame or at the bottom of the inner cylinder, and the position acquisition device can monitor whether the inner cylinder moves up and down.

Preferably, the outer barrel is provided with a liquid level meter, the liquid level meter can detect the position of the collecting device in the water area, the liquid level meter sends the detected liquid level to a control system of the collecting device, and the control system adjusts the depth of the collecting device in the water area in real time according to the liquid level information.

In a preferred example, a plurality of through holes 107 are provided in the side wall of the outer tub, the through holes 107 being located at an end of the outer tub near the bung 102. When the inner cylinder moves upwards, water reserved between the inner cylinder and the outer cylinder is pushed upwards by the telescopic sealing ring and then discharged out of the outer cylinder from the through hole, if the through hole is not formed, water reserved between the inner cylinder and the outer cylinder is pushed upwards by the telescopic sealing ring and then flows upwards from a gap between the outer cylinder and the inner cylinder, so that water garbage cannot flow into the inner cylinder. If the outer tub is a plastic outer tub, the through hole 107 is generally a circular hole. If the outer barrel is a rigid outer barrel, preferably, the through hole 107 is a long strip hole or a large hole, so that the garbage such as sediment, leaves and branches between the inner barrel and the outer barrel can be conveniently discharged out of the collecting device along with water flow from the long strip hole.

In a preferred example, the bung 102 is provided with an annular balance plate 108, the inner diameter of the balance plate 108 is slightly larger than the outer diameter of the inner barrel 2, so that on one hand, entry of water surface garbage from a gap between the inner barrel and the outer barrel is reduced, on the other hand, friction between the water surface garbage and the balance plate 108 is prevented when the inner barrel 2 moves up and down, the inner diameter of the balance plate 108 is smaller than the inner diameter of the outer barrel, and the outer diameter of the balance plate 108 is larger than the outer diameter of the outer barrel. The balance plate can isolate water flow at the through holes, keep the level above the balance plate stable and free from flowing, and facilitate surrounding water surface garbage to collect to the inner barrel.

In a preferred example, an exhaust hole is formed in the side wall of the outer barrel, preferably, the exhaust hole is located below the telescopic sealing ring 5, a one-way valve is arranged on the exhaust hole, the telescopic sealing ring 5 is continuously stretched and contracted, air is accumulated below the telescopic sealing ring 5, when the accumulated air pressure exceeds a certain value, the one-way valve is opened, a certain amount of air pressure is discharged, and the purpose of releasing the air pressure is to prevent the telescopic sealing ring from expanding to affect the use and the service life of the telescopic sealing ring.

In a preferred example, the inner wall of the outer barrel is provided with a plurality of upper pulleys 110 in a ring shape, the upper pulleys 110 are accommodated in the accommodating cavity 101, the upper pulleys 110 are positioned at one end of the outer barrel, which is close to the barrel opening 102, and the upper pulleys 110 are arranged above the telescopic sealing ring 5; the inner wall of the outer barrel is annularly provided with a plurality of lower pulleys 111, the lower pulleys 111 are accommodated in the accommodating cavity 101, and if the telescopic sealing ring 5 is arranged on the side wall of the inner barrel, the lower pulleys 111 are arranged below the telescopic sealing ring 5; the preferable scheme is that an upper pulley and a lower pulley are arranged at the same time, the upper pulley and the lower pulley are both used for stably moving the inner cylinder up and down, so that shaking is avoided when the inner cylinder moves up and down, the inner cylinder is inclined and sunken, and laminar flow is further generated at the moment that water enters an upper opening of the inner cylinder, so that water inflow is small, and water garbage is not easy to collect; and go up pulley and lower pulley, can avoid producing the friction between inner tube and the outer bucket inner wall or the balance plate, avoid the friction damage between inner tube and the outer bucket, also be favorable to collecting surface of water rubbish simultaneously.

In a preferred example, a plurality of stopping blocks (not shown in the figure) are annularly arranged on the inner wall of the outer barrel, the stopping blocks are accommodated in the accommodating cavity 101 and are positioned at one end of the outer barrel, which is close to the bung hole 102, the stopping blocks are positioned above the telescopic sealing ring 5 and are positioned below the upper pulley 110 at the same time, preferably, the stopping blocks are elastic anti-collision stopping blocks, the stopping blocks can stop the telescopic sealing ring, the stopping blocks limit the highest position of the upward movement of the inner barrel, the stopping blocks play a role in protecting the upper pulley, and the telescopic sealing ring is prevented from striking the upper pulley when the inner barrel is continuously moved upwards, so that the upper pulley and the telescopic sealing ring are prevented from being damaged, and the service life of the telescopic sealing ring is prolonged. In the example, inner tube surface is along radial fixed being provided with inner tube flange 51, outer barrel inner wall is along radial fixed being provided with outer barrel flange 52, inner tube flange 51 is located outer barrel flange 52 top, the one end and the inner tube flange 51 sealing connection of telescopic seal along the axis direction, the other end and the outer barrel flange 52 sealing connection of telescopic seal along the axis direction to the backstop piece can backstop inner tube flange 51, and inner tube flange 51 constantly strikes the pulley when avoiding the inner tube to upwards remove, and protection pulley and inner tube flange are avoided damaging.

The surface of the outer barrel is provided with at least one handle, so that the outer barrel can be conveniently taken or carried or the collecting device can be conveniently carried. In an example, the outer tub surface is symmetrically provided with two handles.

Inner cylinder

As shown in fig. 1-3 and fig. 5, the inner cylinder 2 is a hollow cylindrical structure with two open ends, the inner cylinder 2 comprises an upper opening 21 and a lower opening 22, the upper opening 21 is formed at one end of the inner cylinder along the axial direction, the lower opening 22 is formed at the other end of the inner cylinder along the axial direction, the upper opening 21 is positioned above the lower opening 22, the inner diameter of the upper opening 21 is not smaller than the inner diameter of the lower opening 22, a hollow cavity is formed in the side wall of the inner cylinder 2 or a floating body is arranged on the inner cylinder, the inner cylinder has buoyancy, and the inner cylinder can move up and down in the accommodating cavity. In an example, the inner barrel is preferably a plastic inner barrel. Of course, the inner cylinder may be a rigid inner cylinder.

The inner cylinder side wall is provided with at least one hollow cavity 23, and a plurality of hollow cavities are symmetrically arranged in the inner cylinder side wall along the axial direction of the inner cylinder side wall. Preferably, there is one hollow cavity 23, and the hollow cavity 23 is an annular hollow cavity. Preferably, the length of the hollow cavity 23 is smaller than that of the inner cylinder along the axial direction of the inner cylinder, and the hollow cavity 23 is arranged at one end of the side wall of the inner cylinder close to the lower opening. In the example, the length of cavity is only two thirds of inner tube length, of course other length or thickness numerical values that can also be according to actual gravity and buoyancy, reduce cavity volume, reduce the buoyancy of inner tube, reduce the critical water level that the inner tube risen, the inner tube just can make the inner tube descend without discharging more water after rising, improve the device and collect the speed of rubbish, simultaneously can make collection device more easily operate in the moment of starting, need shorter time collection device can normal operating, after reducing cavity volume, only need 10 minutes the device can operate normally, greatly reduced the device's start-up time. Of course, the inner cylinder can be provided with a floating body, and the floating body can be arranged on the outer surface of the inner cylinder or the inner wall of the inner cylinder.

The inner cylinder is placed on the support frame 104 under the action of gravity, the inner cylinder is held and is lower than the water level in the inner cylinder upper opening when holding the chamber, and water flows into the holding chamber from the upper opening, holds the intracavity water level and reaches the back of a certain position, the buoyancy of inner cylinder 2 is greater than the gravity that inner cylinder 2 bore, inner cylinder 2 rises, to the upper opening of inner cylinder 2 is higher than the waters water level, and water no longer flows into the holding chamber, and water drainage mechanism continuously draws water outwards from the wash port, hold the water level in the chamber and constantly descend, when falling to the buoyancy of inner cylinder 2 is less than the gravity that the inner cylinder bore, under the effect of gravity, inner cylinder 2 descends to certain position, at this moment, the inner cylinder upper opening is lower than the waters water level, and water flows into the holding chamber from the upper opening again, so repeatedly, the inner cylinder constantly rises and descends under buoyancy and gravity.

In a preferred example, an induction device is arranged at one end of the inner cylinder 2 close to the upper opening, and the induction device can detect whether a filter screen is placed in the inner cylinder. Therefore, the problem that more water surface garbage leaks into the accommodating cavity caused by the fact that the water surface garbage is collected into the accommodating cavity of the outer barrel when the filter screen is forgotten to be placed, or the filter screen is inclined to be placed on the upper opening of the inner barrel is avoided, the inner part of the outer barrel is dirty, and cleaning is troublesome.

The inner wall of the inner cylinder is provided with an annular placement step 27 or placement ring (not shown), and the placement step 27 or placement ring is positioned at one end of the inner cylinder close to the upper opening 21.

Isolation net barrel

As shown in fig. 1-2 and fig. 6-7, the isolation net barrel 3 is disposed at the bottom of the outer barrel 1, and a plurality of water passing holes 30 are formed in the isolation net barrel, preferably, a plurality of water passing holes 30 are formed in the side wall of the isolation net barrel 3. Preferably, the isolation net drum 3 is detachably mounted on the support frame 104. In an example, the isolation net drum is mounted on the support frame 104 by a butterfly screw. The isolation net barrel is detachably mounted, so that the isolation net barrel can be detached and cleaned and maintained after long-term use. The water holes are not formed in the bottom of the isolation net barrel, so that water in the isolation net barrel flows downwards, water flows out of the water holes in the side wall of the isolation net barrel when water is discharged, the bottom of the isolation net barrel is not drained, water flow in the accommodating cavity only flows transversely, longitudinal flow of water caused by water discharging at the bottom of the isolation net barrel is avoided, the longitudinal flow is particularly easy to cause impact on the descending of the inner barrel, suction force of water discharging of the water discharging mechanism acts on the descending movement of the inner barrel more easily and smoothly, the descending of the inner barrel is smoother particularly when the collecting device is started, and the starting time of the collecting device is greatly shortened.

A suspension frame 32 is arranged in the isolation net barrel 3, and the filter screen 4 is placed on the suspension frame 32.

The inner wall of the isolation net barrel 3 is fixedly provided with a baffle ring 33, and the baffle ring is positioned at the upper end of the isolation net barrel. Preferably, a flare 34 is arranged at the top opening of the isolation net barrel 3.

As another example, an ultrasonic mechanism may be disposed within the outer barrel, the ultrasonic mechanism disposed within the receiving chamber, the ultrasonic mechanism in contact with or in proximity to the isolation barrier. The ultrasonic mechanism is utilized to vibrate, so that the garbage in the water passing holes of the isolation net barrel is cleaned, and the problem that the garbage in the water passing holes of the isolation net barrel is blocked to cause water drainage failure or difficult water drainage is avoided. Preferably, the ultrasonic mechanism is ultrasonic, the ultrasonic mechanism is arranged at the bottom of the outer barrel, and the ultrasonic mechanism is in contact with the isolation net barrel. Of course, the ultrasonic mechanism can also vibrate and clean other parts in the outer barrel, such as the inner wall of the outer barrel, the side wall of the inner barrel, the side wall of the filter screen and the like.

Set up the effect of isolation net bucket 3 to hold and support flexible filter screen, avoid flexible filter screen direct attachment on the inner wall of inner tube 2, if flexible filter screen direct attachment is on the inner wall of inner tube 2, more rubbish in the filter screen extrudees the inner wall of inner tube, rubbish in the filter screen and the water that remains in the rubbish cause the trashing to the inner tube when the inner tube upwards moves, make the inner tube difficult to continue upwards to move, influence collection device and continue to collect rubbish, simultaneously if flexible filter screen direct attachment is on the inner wall of inner tube 2, also cause the water in the filter screen to hardly discharge.

Filter screen

The filter screen 4 is a tubular structure with a collection cavity, as shown in fig. 8, in the example, the filter screen 4 is accommodated in the isolation net barrel 3, a plurality of filter holes 41 are formed in the filter screen, a plurality of filter holes 41 are formed in the side wall and the bottom of the filter screen, water surface garbage is left in the collection cavity of the filter screen body through the filter holes 41, water is pumped to the drain hole 103 through the filter holes 41 to be discharged, the filter screen can collect and store the water surface garbage, a collection port 42 is formed in one end of the filter screen, and the water surface garbage and water enter the collection cavity of the filter screen 4 through the collection port 42. The filter screen comprises a body part 48 and an extension part 49 along the axial direction, the extension part 49 is positioned at one end of the filter screen close to the collecting opening 42, and the body part 48 and the extension part 49 are integrally connected or separated and tightly connected so as to prevent garbage from leaking from the filter screen into the accommodating cavity 101 of the outer barrel 1.

Preferably, the filter screen 4 is a flexible filter screen, the body portion 48 and the extension portion 49 are integrally connected, the filter screen is provided with a support ring 43 and a bottom frame 44, the support ring 43 is fixedly arranged on the collecting port 42, and the support ring 43 is movably arranged on one end of the placing step 27, or the placing ring, or the inner cylinder, which is close to the upper opening. In an example, the diameter of the supporting ring 43 is matched with the diameter of the placement step 27, or the diameter of the supporting ring 43 is not smaller than the diameter of the upper opening of the inner cylinder, so that the water surface garbage can enter the filter screen completely, and the water surface garbage is prevented from entering between the filter screen and the inner cylinder. The underframe 44 is movably arranged on the suspension frame 32, the underframe 44 is a hard underframe, the underframe 44 plays a role of enabling the bottom of the filter screen to sag and is used for supporting the filter screen, the water surface garbage floats on the water surface and has lighter general mass, the volume of the filter screen is convenient to fully utilize, and the light water surface garbage is fully contained in the filter screen 4. The suspended frame 32 separates the underframe 44 from the partition plate 31, so that the underframe and the partition plate 31 have gaps, water in the filter screen is conveniently discharged into the accommodating cavity through the filter screen, and water in the filter screen is prevented from being discharged easily due to the contact between the underframe and the partition plate. The underframe mainly plays a sagging role and does not influence the water discharge from the bottom of the filter screen.

The filter screen lateral wall is preferably provided with annular cuff 45, cuff 45 set up in body portion 48 and extension 49's junction, cuff 45 internal diameter is not less than isolation net barrel 3 external diameter, cuff 45 internal diameter is less than support ring 43 internal diameter, the main part is along the height of axis direction is greater than isolation net barrel 3's height, cuff 45 activity place in isolation net barrel 3 is gone up or the cover hangs outside isolation net barrel 3. The height of the extending part along the axis direction is not less than the distance from the top of the isolation net barrel 3 to the top of the inner barrel 2 when the inner barrel moves upwards to the highest position, and the height of the extending part along the axis direction is not less than the distance between the top of the inner barrel and the top of the isolation net barrel after the inner barrel floats upwards when the inner barrel moves upwards to the highest position. The aim at that this setting can enough make filter screen and inner tube intimate contact, avoid surface of water rubbish to spill to between filter screen and the inner tube and can not be collected by the filter screen, also make things convenient for when inner tube 2 reciprocates, the filter screen does not reciprocate along with inner tube 2, the body portion of filter screen does not reciprocate along with inner tube 2 exactly that says so, and the extension of filter screen is along with the inner tube reciprocates and constantly stretches and fold, the weight that bears when having alleviateed inner tube 2 upwards to float, accomplish and do not influence the inner tube and reciprocate, help prolonging time and the frequency that the inner tube reciprocated, help collecting more surface of water rubbish, very big improvement surface of water rubbish's collection efficiency. Preferably, a flare 34 is disposed at the top opening of the isolation net barrel 3, so that the cuff is easy to be placed on the inner wall of the flare 34.

The pull ring 46 is vertically arranged on the support ring 43, the pull ring 46 is convenient for taking and placing the filter screen 4, when the collecting device is placed in a water area, the filter screen 4 can be taken out by hooking the pull ring 46, water surface garbage in the filter screen is placed in the collecting device again after being dumped, and the collecting device continues to collect the water surface garbage.

The bottom handle 47 is vertically arranged at the bottom of the filter screen, the bottom handle 47 extends out of the suspension frame 31 and faces the partition plate 31, and when the garbage in the filter screen is dumped, the bottom handle is pulled upwards to dump the garbage on the water surface in the filter screen. In the example, the bottom handle 47 is vertically disposed on the chassis 44.

The flexible filter screen is adopted, so that the use is light, the cost is greatly saved, the filter screen can not move up and down along with the inner cylinder, and the capability of collecting the garbage on the water surface is greatly improved.

As a suboptimal scheme, the filter screen 4 is a hard filter screen, the cost of the hard filter screen is higher, the filter screen moves up and down along with the inner cylinder, the upward moving weight of the inner cylinder is increased, the capability of collecting water surface garbage is limited, and the inner cylinder stops moving up and down after collecting less water surface garbage.

As a suboptimal solution, the filter screen includes a body portion and an extension portion along the axial direction, the body portion 48 is a hard body portion, the extension portion 49 is a flexible extension portion, the body portion is used for accommodating water surface garbage, and along with the up-and-down movement of the inner cylinder, the extension portion continuously stretches and folds, and the body portion does not follow the up-and-down movement of the inner cylinder together, so that the gravity born by the upward movement of the inner cylinder is reduced. The collecting port 42 of the filter screen 4 is provided with a supporting ring 43, the supporting ring 43 is movably arranged on the placing ring 26 or the placing step 27, when the inner cylinder moves upwards to the highest position, the equal interval between the inner cylinder and the bottom of the filter screen is not more than the height of the filter screen, and the manufacturing cost of the filter screen can be slightly increased due to the adoption of the hard filter screen in the body part.

Telescopic sealing ring

As shown in fig. 2-3 and fig. 9, the telescopic sealing ring 5 is arranged between the outer barrel 1 and the inner barrel 2, the telescopic sealing ring 5 is sleeved on the periphery of the inner barrel 2, one end of the telescopic sealing ring 5 is fixedly connected with the outer wall of the inner barrel, and the other end of the telescopic sealing ring 5 is fixedly connected with the inner wall of the outer barrel 1. Preferably, at least one end of the telescopic sealing ring 5 is in sealing connection, for example, one end, close to the upper side, of the telescopic sealing ring 5 is in sealing connection with the outer wall of the inner cylinder or the inner wall of the outer cylinder 1. Further preferably, both ends of the telescopic sealing ring 5 are in sealing connection, one end of the telescopic sealing ring 5 is in sealing connection with the outer wall of the inner cylinder, and the other end of the telescopic sealing ring 5 is in sealing connection with the inner wall of the outer barrel 1. The telescopic sealing ring is arranged to isolate water flowing in from a gap between the outer barrel and the inner barrel, and the buoyancy of the inner barrel is adjusted.

In one embodiment, the inner cylinder surface is fixedly provided with an inner cylinder flange 51 along the radial direction, the inner wall of the outer cylinder is fixedly provided with an outer cylinder flange 52 along the radial direction, the inner cylinder flange 51 is positioned above the outer cylinder flange 52, or the inner cylinder flange 51 is positioned below the outer cylinder flange 52, preferably, the inner cylinder flange 51 is positioned above the outer cylinder flange 52, the through hole 107 is arranged above the outer cylinder flange 52, and the upper pulley 111 is positioned above the inner cylinder flange 51. The inner cylinder flange is positioned above the outer cylinder flange, the exhaust hole is arranged at one end of the outer cylinder, which is close to the outer cylinder flange, and the exhaust hole is positioned below the outer cylinder flange, so that the air pressure P is formed by accumulating bubbles in water between the lower part of the telescopic sealing ring and the inner cylinder, which is an optimal scheme ₁ As shown in fig. 3, as the telescoping seal ring continues to expand and compress, P ₁ Pressure is increased such that P ₁ Greater than atmospheric pressure P ₂ ，P ₁ The pressure is increased, which is favorable for the floating of the inner cylinder, and the P generated by the continuous expansion and compression of the telescopic sealing ring ₁ Can balance the inner tube buoyancy for the critical water level of inner tube upward movement reduces, and critical water level reduces and helps collecting big body rubbish such as beverage bottle in the filter screen, and can accelerate inner tube upward and downward movement time, improves the speed of collecting surface of water rubbish.

In one embodiment, the telescopic sealing ring 5 is disposed at the bottom of the inner cylinder 2, one end of the telescopic sealing ring 5 is in sealing connection with the bottom of the inner cylinder 2, and the other end of the telescopic sealing ring 5 is in annular sealing connection with the bottom of the outer cylinder 1. The telescopic sealing ring is arranged at the bottom of the inner cylinder, so that the volume of the outer cylinder can be reduced, and materials are saved.

The working principle of the water surface garbage collection device of the patent is as follows:

the collecting device is fixed in water, the balance plate is lower than the water level of the water surface, in the example, the balance plate is lower than the water surface by 5-10 cm, the upper opening of the inner cylinder is not higher than the water surface, water is injected into the accommodating cavity, the buoyancy of the inner cylinder is gradually increased along with the rising of the water level in the accommodating cavity, and when the inner cylinder is used for collecting waterWhen buoyancy is greater than the gravity born by the inner barrel, the inner barrel moves upwards, the telescopic sealing ring stretches, the upper opening of the inner barrel is higher than the water surface, water is not injected into the inner barrel any more, the drainage pump continuously pumps water, when the water level falls to the position that the buoyancy of the inner barrel is smaller than the gravity born by the inner barrel, the inner barrel moves downwards, the telescopic sealing ring compresses, the inner barrel moves to a position lower than the water surface, water surface garbage and water flow into the filter screen in the inner barrel, the water level in the accommodating cavity rises again, when the buoyancy of the water level rises to the inner barrel and is greater than the gravity born by the inner barrel, the inner barrel moves upwards again, the inner barrel repeatedly rises and falls continuously, the drainage pump continuously pumps water, water outside the outer barrel flows towards the center of the inner barrel, garbage on the water surface flows into the filter screen in the inner barrel along with the water flow, the inner barrel continuously moves upwards and downwards to enable the water flow into the inner barrel to be fast, the water surface of the outer barrel moves towards the center of the inner barrel to generate water surface tension to be large and small, and the water surface garbage moving towards the center of the inner barrel is continuously accelerated, the collection of the water surface garbage is accelerated, and the radiation area of garbage collected by the collection device is enlarged. The water surface garbage flows into the filter screen in the inner barrel, is filtered by the filter screen, the water surface garbage is left in the filter screen, filtered water is discharged from the drain hole of the outer barrel through the drain pump, water flow circulation is guaranteed, after the filter screen garbage is collected fully, the filter screen pull ring is pulled up, the filter screen is pulled out from the collecting device, the filter screen is placed in the isolation net barrel again after the water surface garbage in the filter screen is dumped, and the water surface garbage is continuously collected. Bubble in the accumulated water between the lower part of the telescopic sealing ring and the inner cylinder forms air pressure P ₁ As shown in fig. 3, as the telescoping seal ring continues to expand and compress, P ₁ Pressure is increased such that P ₁ Greater than atmospheric pressure P ₂ ，P ₁ The pressure is increased, which is favorable for the floating of the inner cylinder and the generation of P by the telescopic sealing ring ₁ Can balance the buoyancy of the inner barrel, so that the critical water level of the upward movement of the inner barrel is reduced, and the critical water level reduction is helpful for collecting large floating garbage such as beverage bottles in the filter screen. In the example, when the accommodating cavity of the outer barrel is filled with water, the inner barrel moves upwards to be in an automatic adjusting range which can keep normal work when the inner barrel is suitable for the rising or lowering of the water surface of the water area, and when the rising or lowering of the water surface of the water area exceeds the automatic adjusting range of the device, the outer barrel can be manually or automatically adjusted in the water areaThe position is fixed to adapt to the water level to continue to work.

All the features of the above components can be freely combined without conflict, and in addition, the structural changes, the variants and the modifications of the components are also within the protection scope of the patent.

In the description of the present specification, a description of the terms "one embodiment," "some embodiments," "yet another embodiment," "other embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art may combine and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications and alternatives to the above embodiments may be made by those skilled in the art within the scope of the utility model.

Claims

1. The self-cleaning water surface garbage collection device is characterized by comprising an outer barrel (1), an inner barrel (2), a filter screen (4), a drainage mechanism (9) and a control system;

the outer barrel (1) is provided with a containing cavity (101) and a drain hole (103), and the drain hole (103) is communicated with the containing cavity; the inner cylinder (2) is accommodated in the accommodating cavity, the inner cylinder (2) has buoyancy, and the inner cylinder can move up and down; the filter screen (4) is accommodated in the inner cylinder (2) and can accommodate garbage on the water surface;

the water draining mechanism (9) is configured to drain water in the accommodating cavity (101) out of the collecting device through the water draining hole (103) or push water in the water area into the accommodating cavity (101) through the water draining hole (103);

the control system is provided with a forward rotation control module and a reverse rotation control module; the forward rotation control module is configured to drive the blades (91) to forward rotate so as to discharge water in the accommodating cavity (101) to the outside of the collecting device through the water discharge holes (103), and the reverse rotation control module is configured to drive the blades (91) to reversely rotate so as to push water in a water area into the accommodating cavity (101) through the water discharge holes (103).

2. The self-cleaning water surface garbage collection device according to claim 1, wherein the water drainage mechanism (9) comprises a propeller (92), a blade (91) is fixedly arranged on an output shaft of the propeller (92), the blade (91) is annularly arranged on the output shaft in a winding manner, and an included angle smaller than 90 degrees is formed between the blade and the cross section of the output shaft.

3. The self-cleaning water surface garbage collection device according to claim 1 or 2, further comprising an isolation net barrel (3), wherein the isolation net barrel (3) is arranged between the inner barrel (2) and the filter screen (4), the filter screen (4) is arranged in the isolation net barrel (3), and a plurality of water passing holes (30) are formed in the side wall of the isolation net barrel (3).

4. A self-cleaning water surface garbage collection device according to claim 3, wherein a support frame (104) is arranged at the bottom of the outer barrel (1), the inner barrel (2) is placed on the support frame (104), and the isolation net barrel (3) is arranged on the support frame (104);

a suspension frame (32) is arranged in the isolation net barrel (3), and the filter screen (4) is arranged on the suspension frame.

5. The self-cleaning water surface garbage collection device according to claim 4, wherein the isolation net bucket (3) is detachably mounted on a support frame (104); and/or

The inner cylinder (2) is a plastic inner cylinder, and the supporting frame (104) is a plastic supporting frame.

6. The self-cleaning water surface garbage collection device according to claim 1, wherein the inner cylinder (2) is of a cylindrical structure with two open ends, and at least one hollow cavity is arranged on the side wall of the inner cylinder (2);

7. The self-cleaning water surface garbage collection device according to claim 6, wherein the length of the hollow cavity is smaller than the length of the inner cylinder along the axial direction of the inner cylinder, and the hollow cavity is arranged at one end of the side wall of the inner cylinder (2) close to the bottom;

the inner cylinder (2) is provided with an induction device near one end of the upper opening, and the induction device can detect whether a filter screen is placed in the inner cylinder.

8. Self-cleaning water surface garbage collection device according to claim 1, further comprising a telescopic sealing ring (5);

the telescopic sealing ring (5) is arranged between the outer barrel (1) and the inner barrel (2), one end of the telescopic sealing ring (5) is fixedly connected with the outer wall of the inner barrel, and the other end of the telescopic sealing ring (5) is fixedly connected with the inner wall of the outer barrel (1).

9. A self-cleaning water surface garbage collection device according to claim 3, wherein the filter screen (4) comprises a body part (48) and an extension part (49) along the axial direction, the extension part (49) is positioned at one end of the filter screen close to the opening of the filter screen, the body part (48) and the extension part (49) are integrally connected or separately and tightly connected, and the extension part (49) is a flexible extension part.

10. The self-cleaning water surface garbage collection device according to claim 9, wherein the side wall of the filter screen (4) is provided with an annular hoop (45), the annular hoop (45) is arranged at the joint of the body part (48) and the extension part (49), and the hoop (45) is movably arranged on the isolation net barrel (3) or sleeved outside the isolation net barrel (3);

the height of the extension part (49) is not less than the distance from the top of the inner cylinder to the top of the isolation net barrel (3) when the inner cylinder moves upwards to the highest position, and the body part (48) does not move up and down along with the inner cylinder.