CN220521509U - Drainage device and drainage system - Google Patents

Abstract

The utility model discloses a drainage device and a drainage system, which are ingenious in scheme that a lifting driving assembly is connected to a base assembly, and then the lifting driving assembly is connected with a cover plate, so that the cover plate can be driven by the lifting driving assembly to lift, when more water on the ground is accumulated, the cover plate can be driven by the lifting driving assembly to lift, the water is filtered through the cover plate and a filter screen connected with the cover plate, meanwhile, the efficiency of the water entering a drainage channel is improved, so that the filtering and guiding efficiency of the water on the device is improved, in addition, the water level sensing assembly can be formed by combining parts such as a water level sensor and the like, so as to sense and feed back the water on the ground, and then the lifting driving assembly is controlled by a controller to drive the cover plate to lift, so that the use flexibility and reliability of the device are improved, and a humanized and high-efficiency strategy is provided for discharging the water on the ground.

Description

Drainage device and drainage system

Technical Field

The utility model relates to the field of municipal drainage devices, in particular to a drainage device and a drainage system.

Background

The sponge city is a new generation city rain and flood management concept, and the city can be like a sponge, has good elasticity in the aspects of adapting to environmental changes, responding to natural disasters caused by rainwater and the like, and can be also called as a 'water elasticity city'. The city can be like a sponge, has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters and the like, wherein a gymnasium in Wuyi new areas in the southern Pingzhi province of Fujian has a greening area of approximately 7.5 ten thousand square meters, and when the city is designed, a project party utilizes sponge facilities such as grass planting ditches, water permeable bricks, sinking green lands and the like, so that drainage and waterlogging prevention safety is guaranteed, and rainwater is effectively collected. The sports center is used for sponging reconstruction of water permeable bricks, grass planting ditches, floor drains, drainage facilities and the like, so that rainwater has more slow-falling space and can be slowly absorbed by a layer of sponge.

Although the well lid and floor drain assembly for centralized drainage has been greatly improved in view of the prior art, the ornamental value is greatly improved, but there is still a problem of insufficient flexibility, for example, the well lid for drainage on the traditional roadside mainly uses the clearance of the well lid to permeate water, and this is when the rainfall is great, it is difficult to adjust the drainage ability in good time according to the actual ponding condition, when encountering heavy rainfall weather, the timely drainage of roadside ponding can not be realized, and the problem of garbage interception easily appears, and then the very bad gas is derived, even sometimes because of the large-area inflow of rainwater around the well lid, after the well lid is opened by the workman, the pedestrian or vehicle is difficult to observe, and then causes traffic accident and harm personal safety, therefore, how to provide a well lid or floor drain device capable of adjusting the drainage ability through lifting is very practical.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a drainage device and drainage system that are simple in structure, reliable in implementation, and flexible in use.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a drainage device arranged in the ground drainage channel and used for filtering ground accumulated water flowing into the drainage channel; it comprises the following steps:

the base assembly is arranged in the drainage channel, and a water permeable structure for allowing ground water to enter the drainage channel is arranged on the base assembly;

the cover plate is arranged above the base assembly, and is provided with a plurality of first drain holes penetrating through the upper end face and the lower end face of the cover plate, and the first drain holes are used for filtering ground ponding;

the filter screen is arranged around the edge of the lower end face of the cover plate and surrounds the lower end face to form an annular closed structure, and a plurality of second drain holes are formed in the filter screen and are used for filtering ground ponding;

the lifting driving assembly is connected with the base assembly, the lifting driving end of the lifting driving assembly is connected with the cover plate, and the lifting driving assembly drives the cover plate to lift, so that the height of the cover plate higher than the ground can be adjusted;

and the controller is connected with the lifting driving assembly and used for controlling the lifting driving assembly to drive the cover plate to lift.

As one possible implementation manner, the lifting driving assembly further includes:

the upper end of the first sleeve is fixedly connected with the center of the lower end face of the cover plate, and the upper end of the first sleeve is provided with a first plug for sealing the upper end of the first sleeve;

the lower end of the second sleeve is fixedly connected with the center of the upper end face of the base assembly, the upper end of the second sleeve parallelly penetrates into the first sleeve, and the lower end of the second sleeve is provided with a second plug for sealing the lower end of the second sleeve;

the main body of the electric push rod is fixed in the second sleeve, the driving end of the electric push rod is vertically upwards and fixedly connected with the first sleeve, and the driving end of the electric push rod stretches up and down to drive the first sleeve to slide up and down relative to the second sleeve, so that the cover plate is lifted and lowered along with the second sleeve;

the electric push rod is connected with the controller and is controlled by the controller to work on and off.

As a preferred implementation choice, preferably, in this scheme, a plurality of bracing pieces have been laid to the upper end periphery side of first sheathed tube in annular array, one side and the apron lower extreme face of bracing piece paste mutually, its one end and first sleeve pipe outer wall fixed connection, and its other end is along keeping away from first sleeve pipe direction extension.

As a preferred implementation choice, preferably, the second water drain hole on the filter screen in this scheme is a kidney-shaped through hole, which is arranged on the filter screen in an annular array, and the second water drain hole which is the kidney-shaped through hole is obliquely arranged.

As a preferred implementation option, preferably, the base assembly of the present embodiment includes:

the base is of an annular structure, a plurality of fixing rods are arranged on the periphery of the base, and the base is fixed in the drainage channel through the fixing rods;

the filter disc is disc-shaped, the middle part of the filter disc is fixedly connected with the upper end face of the base, and a plurality of water permeable holes penetrating through the upper end face and the lower end face of the filter disc are formed in the filter disc;

the lower end of the second sleeve penetrates through the middle of the filter disc and is fixedly connected with the base.

As a preferred implementation choice, preferably, in this scheme the apron is equipped with the region of first wash port for sinking structure, and still is equipped with a plurality of strengthening ribs on the apron is equipped with the region of first wash port, is formed with the clearance that supplies ponding inflow to first wash port between the strengthening rib.

As a preferred implementation option, preferably, the filter disc is of a non-flat plate structure with a raised middle part, and the water permeable hole layout area on the filter disc comprises the edge of the filter disc.

As a preferred implementation choice, preferably, the electric push rod in this scheme is a servo electric push rod.

The drainage device can be used as a floor drain or a drainage well assembly.

Based on the above, the utility model also provides a floor drain or a drainage well assembly, which comprises the drainage device.

Based on the above, the present utility model further provides a drainage system, which includes the drainage device.

As a preferred implementation option, preferably, the solution further includes:

the water level measurement assembly is connected with the controller and used for feeding back the accumulated water depth and comprises a water level sensor, and the water level sensor is arranged on the cover plate or on one side of the ground and used for sensing the accumulated water depth of the ground.

Based on the above, the present utility model further provides a drainage control method applicable to the above drainage system, but it is to be understood that the protection requirement of the present utility model is the above device, and the following control method is only a possible manner when the device is used, and is not a protection object of the present utility model, the control method includes the above drainage system, the drainage device of the drainage system is installed on a drainage channel, the water level sensor of the water level measurement assembly is disposed on a cover plate or on one side of the ground and is used for sensing the depth of accumulated water on the ground, and the control method includes:

the water level measuring assembly senses the height of the surface water according to the preset time frequency and generates water accumulation feedback data;

the controller receives the ponding feedback data, and controls the lifting driving assembly to drive the cover plate to lift according to preset conditions, so that the upper end surface of the cover plate is leveled with the ground or forms a preset height difference with the ponding height.

As a preferred implementation choice, preferably, the controller of the scheme receives ponding feedback data, and controls the lifting driving assembly to drive the cover plate to lift according to preset conditions, so that the upper end surface of the cover plate is leveled with the ground or forms a preset height difference with the ponding height, and the method comprises the following steps:

the controller receives ponding feedback data;

the accumulated water feedback data and a preset threshold value x are calculated according to the following formula:

h＝H-x

wherein H is the difference between the upper end surface of the cover plate and the ground, H is the height of accumulated water, and x is a preset threshold value which is larger than 0;

the acquisition of the value of h,

when h is less than or equal to 0, the lifting driving assembly keeps the upper end surface of the cover plate to be level with the ground,

when h is greater than 0, the lifting driving assembly drives the cover plate to ascend, so that the height differential state of the upper end face of the cover plate and the accumulated water is kept equal to a preset threshold value x, wherein the ascending height of the cover plate driven by the lifting driving assembly is not greater than a preset threshold value y, y is greater than x, and when the ascending height of the cover plate driven by the lifting driving assembly is equal to y, the cover plate is not driven to ascend continuously.

By adopting the technical scheme, compared with the prior art, the utility model has the beneficial effects that: according to the technical scheme, the lifting driving assembly is connected to the base assembly, the cover plate is connected to the lifting driving assembly, so that the cover plate can be driven by the lifting driving assembly to lift, when the accumulated water on the ground is more, the cover plate can be driven by the lifting driving assembly to lift, accumulated water is filtered through the cover plate and the filter screen connected with the cover plate, meanwhile, the efficiency of the accumulated water entering the drainage channel is improved, so that the accumulated water filtering and guiding efficiency of the device is improved, in addition, the water level sensing assembly can be formed by combining parts such as a water level sensor and the like, so that the accumulated water on the ground can be sensed and fed back, and then the cover plate is driven by the lifting driving assembly to lift through the controller, so that the use flexibility and reliability of the device are improved, and a humanized and high-efficiency strategy is provided for discharging the accumulated water on the ground.

Drawings

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

FIG. 1 is a schematic view of a schematic three-dimensional view of a device embodying the present utility model;

FIG. 2 is a schematic diagram of a schematic three-dimensional view of a device according to the present utility model;

FIG. 3 is a schematic diagram of a two-dimensional view of a schematic implementation of the apparatus of the present utility model;

FIG. 4 is an exploded schematic view of a simplified embodiment of the apparatus of the present utility model, wherein the electric putter is not shown;

FIG. 5 is a schematic cross-sectional view of a simplified embodiment of the apparatus of the present utility model;

FIG. 6 is a schematic cross-sectional view of a simplified embodiment of the apparatus of the present utility model when installed in a field of use, wherein it is shown primarily in use without water accumulation on the ground;

FIG. 7 is a second schematic cross-sectional view of a simplified embodiment of the apparatus of the present utility model when installed in a field of use, wherein it is shown primarily in use with water on the ground;

FIG. 8 is a schematic cut-away view of a simplified embodiment of one of the system embodiments of the present utility model when installed in a use site, wherein it is primarily shown in use with water on the ground;

FIG. 9 is a schematic cross-sectional view of a second embodiment of the system of the present utility model when installed in a use site, wherein it is shown primarily in use of the apparatus when there is water on the ground.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustrating the present utility model, but do not limit the scope of the present utility model. Likewise, the following examples are only some, but not all, of the examples of the present utility model, and all other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the present utility model.

As shown in one of fig. 1 to 7, the present embodiment is a drainage device provided in a drainage passage 6 of a floor 7 and for filtering floor standing water 5 flowing into the drainage passage 6; it comprises the following steps:

the base assembly 1 is arranged in the drainage channel 6, and a water permeable structure for allowing ground water 5 to enter the drainage channel 6 is arranged on the base assembly 1;

the cover plate 2 is arranged above the base assembly 1, a plurality of first drain holes 21 penetrating through the upper end face and the lower end face of the cover plate 2 are formed in the cover plate 2, and the first drain holes 21 are used for filtering the ground water 5;

the filter screen 3 is arranged around the edge of the lower end face of the cover plate 2 and surrounds the lower end face to form an annular closed structure, a plurality of second drain holes 31 are formed in the filter screen 3, and the second drain holes 31 are used for filtering the ground water 5;

the lifting driving assembly 4 is connected with the base assembly 1, the lifting driving end of the lifting driving assembly is connected with the cover plate 2, and the lifting driving assembly 4 drives the cover plate 2 to lift, so that the height of the cover plate 2 higher than the ground 7 is adjusted;

and the controller is connected with the lifting driving assembly 4 and is used for controlling the lifting driving assembly 4 to drive the cover plate 2 to lift.

In this embodiment, the lifting driving assembly 4 includes:

the upper end of the first sleeve 41 is fixedly connected with the center of the lower end face of the cover plate 2, and the upper end of the first sleeve 41 is provided with a first plug 411 for sealing the upper end of the first sleeve 41;

the lower end of the second sleeve 42 is fixedly connected with the center of the upper end face of the base assembly 1, the upper end of the second sleeve 42 penetrates into the first sleeve 41 in parallel, and the lower end of the second sleeve 42 is provided with a second plug 421 for sealing the lower end of the second sleeve 42;

the main body of the electric push rod 43 is fixed in the second sleeve 42, the driving end of the electric push rod 43 is vertically upwards and is fixedly connected with the first sleeve 41 (can be detachably and fixedly connected), and the driving end of the electric push rod 43 stretches up and down to drive the first sleeve 41 to slide up and down relative to the second sleeve 42, so that the cover plate 2 is lifted and lowered in a following way;

wherein, the electric push rod 43 is connected with the controller and is controlled to work on and off by the controller;

in addition, in order to control the lifting driving height of the electric push rod 43 conveniently, in this embodiment, preferably, the electric push rod 43 is a servo electric push rod 43.

Because the electric push rod 43 is located under the cover plate 2 and is possibly washed by rainwater and surface water 5, in order to improve the waterproofness and durability of the electric push rod, the upper end of the second sleeve 42 penetrates into the lower end of the first sleeve 41 and forms a gap between the upper end and the lower end of the second sleeve, which is smaller than 0.1mm, but the upper end and the lower end are not in interference fit with each other, and a certain sliding fit degree of freedom exists (lubricant can be coated), so that when the first sleeve 41 is lifted by the electric push rod 43, the water flowing into the space between the cover plate 2 and the base assembly 1 cannot enter the second sleeve 42, thereby avoiding the electric push rod 43 from being damaged due to water immersion, improving the use reliability and service life of the electric push rod 43.

In this solution, when the electric push rod 43 pushes the cover plate 2 to rise to the upper limit of its height or the upper limit of a preset height, the lower end of the filter screen 3 will not fall out (or rise out of) the mounting hole of the mounting device, i.e. the vertical height of the filter screen 3 is greater than the height or the preset height of the electric push rod 43 capable of driving the cover plate 2 to rise.

Because the surface water 5 and the filtered sundries can cause certain pressure to the cover plate 2, in order to improve the supporting structure strength of the cover plate 2, the scheme is that a plurality of supporting rods 412 are distributed on the outer periphery side of the upper end of the first sleeve 41 in an annular array, one side of each supporting rod 412 is attached to the lower end face of the cover plate 2, one end of each supporting rod is fixedly connected with the outer wall of the first sleeve 41, and the other end of each supporting rod extends along the direction away from the first sleeve 41.

In addition, as a preferred implementation option, the second drain holes 31 on the filter screen 3 in this embodiment are kidney-shaped through holes, which are distributed on the filter screen in an annular array, and the second drain holes 31 with kidney-shaped through holes are arranged in an inclined manner.

Through the structure, when the cover plate 2 is driven by the electric push rod 43 to rise, the ground water 5 can enter the drainage channel 6 through the second drainage holes 31 on the filter screen 3 on the side surface of the cover plate 2, and the second drainage holes 31 can also block larger sundries outside so as to prevent the sundries from entering the drainage channel 6.

For the base assembly 1, the base assembly 1 according to the present embodiment includes:

the base 11 is of an annular structure, a plurality of fixing rods 12 are arranged on the periphery of the base 11, and the base 11 is fixed in the drainage channel 6 through the fixing rods 12;

the filter disc 13 is disc-shaped, the middle part of the filter disc 13 is fixedly connected with the upper end surface of the base 11, and a plurality of water permeable holes 131 penetrating through the upper end surface and the lower end surface of the filter disc 13 are formed in the filter disc;

wherein the lower end of the second sleeve 42 passes through the middle of the filter disc 13 and is fixedly connected with the base 11.

In addition, this scheme the apron 2 is equipped with the region of first wash port 21 for sinking structure, and still is equipped with a plurality of strengthening ribs 22 on the apron 2 is equipped with the region of first wash port 21, is formed with the clearance that supplies ponding inflow to first wash port 21 between the strengthening rib 22.

Because the surface water 5 is mixed with a certain amount of soil and small-volume impurities, and when a part of soil and impurities possibly fall onto the filter disc 13 from the gap between the filter screen 3 and the inner wall of the drainage channel 6 or the second drainage hole 31, the filter disc 13 is blocked due to excessive accumulation, and as a preferred implementation choice, the filter disc 13 is preferably of a non-flat plate structure with a raised middle part, and the water permeable hole 131 layout area on the filter disc 13 comprises the edge of the filter disc 13, under the structure, a part of soil and impurities can be flushed to the edge of the filter disc 13 due to the accumulated water flowing continuously, and the middle part of the filter disc 13 is also provided with a certain amount of water permeable holes 131 to ensure the drainage capacity.

Based on the above, in order to improve the convenience and flexibility of use of the device, the present embodiment further provides a drainage system, which includes the above drainage device, and in addition to the above, the system further includes:

the water level measurement assembly is connected with the controller and is used for feeding back the accumulated water depth, and comprises a water level sensor which is arranged on the cover plate 2 (shown in figure 8) or on one side of the ground (shown in figure 9) and is used for sensing the depth of the accumulated water 5 on the ground.

In this way, the water level sensing signal of the water level sensor 8 can be used for feeding back the water level information, and then the controller is used for controlling the electric push rod 43 in a linkage manner to drive the cover plate 2 to rise adaptively, so that the drainage flexibility of the device is realized.

In addition, the present embodiment provides a drainage control method applicable to the drainage system, but it should be understood that the protection requirement of the present utility model is the device, and the control method is only a possible way of using the device, and is not the protection object of the present utility model.

Based on the above, the present embodiment further provides a drainage control method applicable to the above drainage system, including the above drainage system, the drainage device of the drainage system is installed on the drainage channel 6 (such as a drainage pipe), the water level sensor 8 of the water level measurement assembly is disposed on the cover plate 2 assembly or on one side of the ground and is used for sensing the depth of the ground water 5, and the control method includes:

the water level measuring assembly senses the height of the ground water 5 according to preset time frequency and generates water accumulation feedback data;

the controller receives the ponding feedback data, and controls the lifting driving assembly 4 to drive the cover plate 2 to lift according to preset conditions, so that the upper end surface of the cover plate 2 is leveled with the ground or forms a preset height difference with the ponding height.

As a preferred implementation choice, preferably, the controller of the present solution receives the ponding feedback data, and controls the lifting driving assembly 4 to drive the cover plate 2 to lift according to a preset condition, so that the upper end surface of the cover plate 2 is leveled with the ground or forms a preset height difference with the ponding height, including:

the controller receives ponding feedback data;

the accumulated water feedback data and a preset threshold value x are calculated according to the following formula:

h＝H-x

wherein H is the difference between the upper end surface of the cover plate 2 and the ground, H is the height of accumulated water, and x is a preset threshold value which is larger than 0;

the acquisition of the value of h,

when h is less than or equal to 0, the lifting driving component 4 keeps the upper end surface of the cover plate 2 to be level with the ground,

when h is greater than 0, the lifting driving assembly 4 drives the cover plate 2 to ascend, so that the height differential state of the upper end surface of the cover plate 2 and the accumulated water is kept equal to a preset threshold value x, wherein the ascending height of the cover plate 2 driven by the lifting driving assembly 4 is not greater than the preset threshold value y, y is greater than x, and when the ascending height of the cover plate 2 driven by the lifting driving assembly 4 is equal to y, the cover plate 2 is not driven to ascend continuously; as a possible value example, x may be selected to be 2-5cm, that is, when the water accumulation depth is less than x cm, the cover plate 2 is not lifted, when the water accumulation depth is greater than x cm, the cover plate 2 is driven by the lifting driving assembly 4 to lift, and the distance from the cover plate 2 to the water accumulation liquid level is 2-5cm, that is, the cover plate 2 is always kept lower than the water accumulation liquid level by 2-5cm. The control method can enable the cover plate 2 to be lifted and adjusted in real time along with the water accumulation depth, further realize real-time adjustment of the drainage capacity of the device according to the water accumulation depth, and facilitate drainage of water accumulation on the roadside.

It should be noted that, the feedback of the liquid level height signal by the water level sensor 8 and the driving and lifting of the electric push rod 43 (the servo electric push rod 43) by the controller are common control technical schemes in the prior art, which are not unique to the present scheme, but the innovation point of the scheme is that the water level sensor 8 is applied to the adjustment of the drainage capability of the drain well lid or the floor drain, so the working principle of the water level sensor 8 and the working principle of the electric push rod 43 controlled by the controller are not repeated.

In this scheme system, apron 2 can be floor drain lid, also can be municipal drainage well lid, it is when outdoor use, under the condition that weather is good or ground is no ponding, apron 2 is level with the ground, when the weather becomes little rain continuous gradually, water level sensor 8 receives rainwater/ponding infiltration and produces the response feedback signal, and the controller starts electric putter 43 in good time as the power supply according to signal feedback, thereby realize going up and down to apron 2 and drive, if the rainfall is not big, the peripheral wash port of apron 2 is not covered by the rainwater, then elevating gear does not work, increase to a certain extent when the rainfall, and the road surface has ponding vestige, then the signal that water level sensor 8 fed back can make the controller send the instruction to electric putter 43, and along with the lifting height of road surface ponding degree regulation apron 2, so that its up end keeps the interval dynamic stability with the ponding liquid level, but the rising height of apron 2 also has the upper limit (for example, according to the maximum 15cm department above the road surface of predetermineeing altitude value).

Because the second drain holes 31 are arranged on the side surface of the filter screen 3, accumulated water on the peripheral side of the filter screen 3 can enter the drain channel 6 through the filtration of the second drain holes 31, and the drain capacity of the device is improved to a certain extent; at this time, even if a part of small garbage (such as leaves, stones and other small objects) flows into the drainage channel 6 between the cover plate 2 and the base assembly 1, the small garbage can be trapped in the water-permeable holes 131 on the filter disc 13 (irregular disc) of the base assembly 1 because the small garbage is filtered, and can be flushed to the periphery by rainwater, so that the small garbage can be conveniently and regularly removed by a manager (the cover plate 2 is directly detached, and then sediment, sundries and garbage between the cover plate 2 and the base assembly 1 are cleaned). The middle part of the filter disc 13 is arranged in a protruding shape, the edge of the filter disc is slightly lower, the formed inclined plane structure can effectively relieve the impact force of rainwater, and garbage is brought to the periphery, so that the subsequent cleaning work is convenient.

The foregoing description is only a partial embodiment of the present utility model, and is not intended to limit the scope of the present utility model, and all equivalent devices or equivalent processes using the descriptions and the drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A drainage device arranged in the ground drainage channel and used for filtering ground accumulated water flowing into the drainage channel; characterized in that it comprises:

the base assembly is arranged in the drainage channel, and a water permeable structure for allowing ground water to enter the drainage channel is arranged on the base assembly;

the cover plate is arranged above the base assembly, and is provided with a plurality of first drain holes penetrating through the upper end face and the lower end face of the cover plate, and the first drain holes are used for filtering ground ponding;

the filter screen is arranged around the edge of the lower end face of the cover plate and surrounds the lower end face to form an annular closed structure, and a plurality of second drain holes are formed in the filter screen and are used for filtering ground ponding;

the lifting driving assembly is connected with the base assembly, the lifting driving end of the lifting driving assembly is connected with the cover plate, and the lifting driving assembly drives the cover plate to lift, so that the height of the cover plate higher than the ground can be adjusted;

and the controller is connected with the lifting driving assembly and used for controlling the lifting driving assembly to drive the cover plate to lift.

2. The drain apparatus of claim 1, wherein the elevation drive assembly comprises:

the upper end of the first sleeve is fixedly connected with the center of the lower end face of the cover plate, and the upper end of the first sleeve is provided with a first plug for sealing the upper end of the first sleeve;

the lower end of the second sleeve is fixedly connected with the center of the upper end face of the base assembly, the upper end of the second sleeve parallelly penetrates into the first sleeve, and the lower end of the second sleeve is provided with a second plug for sealing the lower end of the second sleeve;

the main body of the electric push rod is fixed in the second sleeve, the driving end of the electric push rod is vertically upwards and fixedly connected with the first sleeve, and the driving end of the electric push rod stretches up and down to drive the first sleeve to slide up and down relative to the second sleeve, so that the cover plate is lifted and lowered along with the second sleeve;

the electric push rod is connected with the controller and is controlled by the controller to work on and off.

3. The drainage device according to claim 2, wherein a plurality of support rods are arranged on the outer peripheral side of the upper end of the first sleeve in an annular array, one side of each support rod is attached to the lower end face of the cover plate, one end of each support rod is fixedly connected with the outer wall of the first sleeve, and the other end of each support rod extends in a direction away from the first sleeve.

4. The drainage device of claim 2, wherein the second drainage holes on the filter screen are kidney-shaped through holes which are distributed on the filter screen in an annular array, and the second drainage holes in the kidney-shaped through holes are obliquely arranged.

5. The drain apparatus of claim 2, wherein the base assembly comprises:

the base is of an annular structure, a plurality of fixing rods are arranged on the periphery of the base, and the base is fixed in the drainage channel through the fixing rods;

the filter disc is disc-shaped, the middle part of the filter disc is fixedly connected with the upper end face of the base, and a plurality of water permeable holes penetrating through the upper end face and the lower end face of the filter disc are formed in the filter disc;

the lower end of the second sleeve penetrates through the middle of the filter disc and is fixedly connected with the base.

6. The drainage device of claim 5, wherein the area of the cover plate provided with the first drainage hole is of a sinking structure, and a plurality of reinforcing ribs are further arranged on the area of the cover plate provided with the first drainage hole, and gaps for water to flow into the first drainage hole are formed between the reinforcing ribs.

7. The drainage apparatus of claim 5 wherein the filter tray is a non-planar structure with a raised central portion and the water permeable aperture arrangement area on the filter tray comprises an edge of the filter tray.

8. The drainage apparatus of claim 5 wherein the electric push rod is a servo electric push rod.

9. A drainage system comprising a drainage device according to any one of claims 1 to 8.

10. The drainage system of claim 9, further comprising:

the water level measurement assembly is connected with the controller and used for feeding back the accumulated water depth and comprises a water level sensor, and the water level sensor is arranged on the cover plate or on one side of the ground and used for sensing the accumulated water depth of the ground.