KR101773801B1

KR101773801B1 - Rubbish inlet protection device of drainage well

Info

Publication number: KR101773801B1
Application number: KR1020150156650A
Authority: KR
Inventors: 조광식
Original assignee: 조광식
Priority date: 2015-11-09
Filing date: 2015-11-09
Publication date: 2017-09-01
Also published as: KR20170054004A

Abstract

An object of the present invention is to provide a device for preventing the introduction of dirt into the superior receptacle by passing water only through the inside of the superior receptacle and having a larger area than the steel grating, A dust inflow blocking plate on which at least one storm inflow hole is formed; a dust trapping plate disposed on the upper surface of the step of the refractory while being inserted into the grating of the steel grating, wherein the absorption expander is embedded, A rising portion for raising the dust inflow blocking plate by increasing the volume toward the upper portion and a separation preventing member for preventing the dust inflow blocking plate from separating by connecting the bottom of the dust inflow blocking plate and the step, The release preventing member is elongated longer than the distance between the upper surface of the step and the upper end of the steel grating Since the water can be flowed into the superior receiver, no extra work is needed to remove the foreign matter inside the superior receiver, so that it is not necessary to input a great deal of cost, time and effort, and the degree of opening of the superior receiver can be adjusted according to the amount of precipitation So that it is possible to smoothly and instantly drain water, and it is possible to easily draw out the internal structure without withdrawing the dirt inflow prevention device itself, thereby providing a device for preventing inflow of excellent dirt, which saves enormous time and cost for maintenance.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to an apparatus for preventing inflow of dirty soil, and more particularly, to a device for preventing infiltration of dirty soil by passing water only into a superior receiving chamber and providing means for preventing the dirt from flowing into the superior receiving chamber.

It is a drainage facility that can be commonly accessed on the road, and the upper part of the open collector is buried on the ground. The open upper part is blocked by steel grating so that foreign substances such as garbage are caught. In the lower part of the house, there is a drainage line connected to the sewer pipe.

At this time, the dirt such as sand passing between the gratings of the steel grating does not go to the bottom of the collecting bed but the water flows to the sewer through the drain.

However, due to the spacing between the gratings, a considerable amount of dirt accumulates in the lower part of the housing due to the installation position. Therefore, it is necessary to clean the inside of the housing regularly. Housekeeping Housekeeping is a very costly and time-consuming task at this time, because the housekeeping needs a lot of manpower to lift heavy steel gratings and then clean them one by one.

Therefore, there is a demand for a technology to smooth the drainage and to prevent the dirt from entering the inside of the superior so that the cost, the time and the manpower are not consumed.

As a representative example of the prior art for blocking the inflow of dirt into the inside of the superior receiving chamber, there is disclosed, as a typical example, a so-called " Excellent '.

The conventional art has a foreign matter filtering function to prevent foreign matter such as inflow of leaves, gravel, soil, and garbage from being filtered out through a sewer pipe. The grooves 12 are formed and the sieving devices 20, 30, 40 and 50 are detachably inserted into the hooking grooves 12 so that the foreign substances are primarily filtered at the cover, The filter is stepwise filtered by the lower filtration device, and the filtration device is installed so as to be seated, so that the filtration is easy and the maintenance is easy.

However, according to the above-described prior art, it is necessary to remove the dirt from the inside of the fryer to drain the fryer during the next rainy season after the rain has been turned on. Considering the large installation number of the fryer, It is a task that requires less manpower, but still requires considerable manpower and costs.

Therefore, it is possible to prevent the inflow of dirt into the inside of the superior receiving container without requiring any separate work for removing such dirt other than the general public beautification cleaning work, and the amount of drainage that can be handled according to the amount of rainwater so that the rainwater can be drained smoothly A controllable stormwater inflow prevention technique is required.

Registration Utility Model No. 20-0431109 (Registered Date: November 11, 2006)

Accordingly, it is an object of the present invention to solve the problems of the prior art, and it is an object of the present invention to provide a method and apparatus for removing dirt, The amount of drainage that can be treated according to the amount of rainwater can be controlled.

In order to accomplish the above object, according to the present invention, there is provided an apparatus for preventing foreign matter from entering a sewer, comprising: a tubular body having an upper portion formed as an opening; a step formed toward the inside of the tubular body along an inner circumferential surface of the opening; And a grill-shaped steel grating in which a rim is mounted on the stepped portion of the collecting crystal, the apparatus further comprising: A plate member disposed on an upper portion of a large steel grating, the plate member being inserted into a grill of the steel grating and being seated on the upper surface of the step of the steel grating, wherein the absorbent expander is embedded, So that the dirt inlet / outlet plate is raised And an escape prevention member which connects the bottom surface of the dust entry blocking plate and the step to prevent the escape of the dust entry blocking plate, wherein the escape prevention member is longer than the distance between the upper surface of the step and the upper end of the steel grating And a stretchable link portion.

Preferably, the dust inflow blocking plate is provided with a draw-out opening through which the lift-up portion can be drawn out, a draw-out cover which can be opened and closed at the draw-out opening, and the excellent inflow hole is formed in the draw-

Preferably, the outlet cover is hinged to the dust entry blocking plate, and the outlet cover locking means is provided.

The upper portion of the box is movable upward and downward while guided to the side wall in accordance with the expansion of the absorption expander. The link portion is preferably disposed between the upper surface of the upper plate and the bottom surface of the outlet cover The compression spring may be provided.

At this time, the top plate may preferably be a porous material through which moisture passes.

Particularly preferably, the release preventing member may be a tension spring connecting the bottom surface of the outlet cover and the upper surface of the stepped portion of the collector.

Further, the link portion is a tube body surrounding the outer circumferential surface of the compression spring so as to surround the outer circumferential surface of the compression spring. The link portion further includes an outer tube having a height lower than that of the compression spring. Preferably, the coupling portion is horizontally protruded along the outer circumferential surface of the outer tube. The diameter is smaller than the spacing between the center of the bearing bars forming the lattice of the steel grating and larger than the spacing between the top and bottom of the bearing bars.

The second ascending part may be further provided with a plate disposed between the elevation of the collecting part and the elevating part, and the elevating part may be vertically connected to the elevating part.

Specifically, the second elevating portion is fixed to the upper surface of the collecting step by an anchor bolt and is integrally formed with a hinge disposed at an end of the step, a lifting plate disposed on the upper surface of the fixing plate, And a bottom plate provided with at least one drain hole, wherein the plate is a steel plate, and the plate is a steel plate.

Preferably, the total cross-sectional area of the at least one drain hole is smaller than the total cross-sectional area of the superior inflow hole.

Further, preferably, the bottom of the excellent retentate is formed with an inclination, and the drainage hole is formed at the lowest position in the bottom of the excellent retentate.

In this case, preferably, the inclination of the excellent retaining cylinder may be formed symmetrically with respect to the center of the retaining cylinder in the longitudinal direction.

The apparatus according to the present invention has the following effects.

First, even foreign materials that can pass through the gratings of the steel grating are prevented from entering the inside of the superior receiving chamber, and only the water can be introduced into the receiving chamber, so that no extra work is required for removing foreign substances inside the receiving chamber. .

Second, the degree of openness of the superior receiver can be adjusted according to the amount of precipitation, so that smooth and immediate drainage is possible.

Thirdly, since the outlet cover is formed on the dust inflow blocking plate, it is possible to easily draw out the internal structure without withdrawing the dust inflow preventing device itself, which saves enormous time and cost for maintenance.

FIG. 1 is an exploded perspective view of a 'well plate having a foreign matter filtering function' disclosed in a conventional Registration Practical Utility Model No. 20-0431109 (registered on November 11, 2006).
2 is a perspective view showing a structure of a normal steel grating.
3 is a plan view showing a steel grating and a dust inflow and shielding plate.
4 is an exploded perspective view showing a dust inflow preventing apparatus according to the present invention.
5 is a side cross-sectional view of a dust inflow preventing apparatus according to the present invention.
FIG. 6 and FIG. 7 are operation states showing that the degree of opening of the dust-entry blocking plate is adjusted stepwise according to an increase in the amount of water introduced in the state of FIG.
Fig. 8 is a partial perspective view showing the excellent staying chamber.
9 is a conceptual view showing an inner bottom inclination of the excellent staying chamber.
10A and 10B are operational state diagrams showing the lifting limit of the lifting and lowering portion due to the engagement portion.

The specific structure or functional description presented in the embodiment of the present invention is merely illustrative for the purpose of illustrating an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention can be implemented in various forms. And should not be construed as limited to the embodiments described herein, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. .

As shown in FIG. 4, the present invention comprises a dust inlet / outlet plate 10, an elevating portion 30, and a link portion 20, which are installed in a conventional well plate.

A conventional well plate comprises a cylindrical body having an upper portion formed as an opening portion and having a stepped portion T formed inwardly along the inner circumferential surface of the opening portion so that a drain port is formed on the road surface so as to expose an opening portion and connected to the sewage pipe, And a grid-shaped steel grating (S) in which a rim is mounted on the frame (T).

The dust-entry blocking plate 10 is a plate disposed on the upper part of the steel grating S, and the dust-entry blocking plate 10 blocks the upper part of the steel grating S, thereby preventing the entry of various kinds of dust into the inside of the dust collecting fixture. And at least one storm inflow hole 12 through which the storm can pass.

However, according to the rainfall amount, the drainage operation is not smooth with only the inflow hole 12. Therefore, when it comes to rain, the dust inflow blocking plate 10 needs to be opened. The elevating portion 30 is provided to open the dust-entry blocking plate 10 only when it is exposed to rain.

As shown in FIG. 5, the lifting portion 30 is formed as a cylinder in which an absorbing and expanding member 32 is housed therein and is expandable toward the upper side as the absorbing and expanding member 32 absorbs moisture.

Specifically, the elevating portion 30 may be formed in a box-like shape, and the upper plate 33 may be formed in a structure capable of varying the piston-like behavior along the side wall. Accordingly, when the rainwater inflows into the inner inflator 32 and the inflating absorber 32 is inflated, the upper plate 33 rises and the inflow / outflow blocking plate 10 also rises, .

The link portion 20 is composed of a separation preventing member for connecting the inside of the excellent receiving container and the dirt inflow blocking plate 10 so that the fine inflow preventing plate is not separated from the excellent receiving container. At this time, in order for the dust-entry blocking plate 10 to rise so that the rainwater can smoothly flow into the superior receiving chamber, the separation preventing member must be formed long so that the dust-entry blocking plate 10 can be raised. The release preventing member specifically connects the upper surface of the level difference (T) of the collecting column to the bottom surface of the dust entry blocking plate 10. At this time, since the bottom surface of the dust entry blocking plate 10 is in contact with the upper surface of the steel grating S when it is not raining, the length of the escape prevention member is at least longer than the length between the upper surface of the collecting step and the upper end of the steel grating S It should be possible.

Since the present invention has been briefly described, each constitution will be described in detail with reference to the accompanying drawings, and the organic working relationship among the constitutions will be described in detail.

The structure of the steel grating S will be briefly described in order to specifically illustrate a position where the elevator 30 constituting the apparatus for preventing inflow of pollutants into the ground according to the present invention is installed.

As shown in FIG. 2, the steel grating S has a plurality of bearing bars 3, each having a cross section similar to a rail shape and having a thick upper portion and a lower portion, a middle portion between the upper portion and the lower portion, And both ends of the bearing bar 3 are connected to the end bar 4 and disposed between the two end bars 4 in parallel to the end bar 4 and at a right angle to the bearing bar 3 Crossbars 5 are provided at regular intervals to connect the plurality of bearing bars 3. Here, the crossbar 5 can be welded to the bearing bar 3.

3, the mounting position of the elevating unit 30 can be changed between the end bar 4 and the cross bar 5 closest to the end bar 4, And each of the lattice spaces formed by the bearing bar 3. And may be preferably provided for each lattice. The space between the end bar 4 and the cross bar 5 closest to the end bar 4 is also the site where the collecting step is formed so that the steel grating S can be seated in the collector. Therefore, the lift portion 30 is provided on the upper surface of the stepped portion.

In FIG. 3, for the sake of convenience of explanation, a part of the dust inflow blocking plate 10 is cut away and the steel grating S is exposed. As shown in FIG. 3, the dust-entry blocking plate 10 is preferably formed with an outlet for withdrawing the elevator 30 at each upper portion of the elevator 30 and an outlet cover 13 for opening and closing the outlet . The inflow hole 12 is formed in the outlet cover 13 so that the water introduced into the inflow hole 12 can easily inflate the absorption expander 32 inside the lift 30.

Meanwhile, the separation preventing member for connecting the dust inflow blocking plate 10 and the upper surface of the stepped portion inside the collecting column may be a tension spring 23 as shown in FIG. Therefore, even if the dust inflow / outflow preventing plate 10 is raised, the tension spring 23 can be extended to prevent the dust inflow / outflow preventing plate 10 from being separated.

In this case, an outer tube 21 surrounding the compression spring 24 and the compression spring 24 may be further interposed between the lift part 30 and the dirt inlet / The upper plate 33 of the lifting unit 30 is lifted and the lifting upper plate 33 is lifted from the lower side of the compression spring 24 to the upper side of the compression spring 24, The compression spring 24 presses the bottom surface of the dust-entry blocking plate 10, and the dust-entry blocking plate 10 is raised.

The outer tube 21 surrounding the compression spring 24 prevents the release of the compression spring 24 and excessive bending deformation in the transverse direction while preventing the compression spring 24 from being deformed in the horizontal direction So that the rising portion 30 is prevented from rising beyond the cross-bar downward step 3-1 of the steel grating S, thereby preventing the dust-entry blocking plate 10 from being excessively moved So that it does not rise.

The lower end of the compression spring 24 may be fixedly coupled to the upper surface of the upper plate 33 of the lifting unit 30. [ The absorptive expandable material 32 in the lifting part 30 may be a member having a structure in which the fiber amorphous region is enlarged like polyethyleneglycol or polyoxyalkylene glycol to facilitate water infiltration, Or may be a polyamide-based material produced by spinning, mixing, dispersing, or spinning, or may be a material imparted with hydrophilicity by graft-copolymerizing a hydrophilic monomer after radicals are formed on molecular chains of a fibrous polymer such as acrylic acid or methacrylic acid, Or may be a member having an absorbing ability by coating a hydrophilic chemical. In addition, in the present invention, any material that expands in volume by absorbing other moisture can be used as the absorbent expandable material 32.

The absorption expander 32 absorbs the rainwater even if it expands, and when it expands, the rain is stopped and dried. When the pressure due to the passage of the vehicle is received from the dust entry blocking plate 10 through the compression spring 24, And returns to its original size.

In the case where the absorptive capacity is lowered due to repeated use of the absorptive expandable material 32, it is necessary to replace the absorptive expandable material 32. In this case, the inflow / outflow shielding plate 13 provided on the upper part of the ascending / It is possible to replace the absorptive expandable member 32 only by lifting the lift member 30 easily.

In this case, the compression spring 24 is installed between the elevating portion 30 and the bottom surface of the dust-entry blocking plate 10 so that even if a large load is transmitted to the upper portion of the dust- A direct impact is not directly transmitted to the elevating portion 30 under the compression spring 24, so that breakage or dislocation can be prevented.

The upper plate 33 of the lifting unit 30 may be made of a porous or net-like material so that rainwater can flow in. (Not shown) may be formed on the top plate 33 to allow the inflow of rainwater.

4 and 5, the second elevating portion 40 may be provided on the lower portion of the elevating portion 30. [

The second elevating portion 40 includes a fixing plate 45 integrally formed with a second hinge 43 fixed to an upper surface of the collecting step by an anchor bolt 46 and disposed at an end of the step, An excellent guide plate 42 which is hinged to the lift plate 41 by the second hinge 43 and is inclined from the second hinge 43 toward the lower portion of the crystal growth, And an excellent retention container 44 having at least one drainage hole 441 formed at the bottom thereof. In FIGS. 4 and 5, the superior retention vessel 44 is not shown, but FIG. 8 shows a state in which the superior retention vessel 44 is coupled to the lower end of the superior guide plate 42 connected from the second hinge 43.

In this case, the rainwater collected in the excellent retention tank 44 is discharged to the drainage hole 441 at the bottom of the excellent retention tank 44 until the amount of rainfall per unit time becomes equal to or larger than a predetermined size, and then the amount of rainwater discharged into the drainage hole 441 When the amount of the rainwater flowing into the superior reservoir 44 is increased, the rainwater in the reservoir 44 is gradually filled up.

When the weight of the excellent retaining cylinder 44 is increased as rainwater is filled in the excellent retaining cylinder 44, the superior guide plate 42 connected to the excellent retaining cylinder 44 rotates about the second hinge 43, 7, the lifting plate 41 is rotated in the clockwise direction and the lifting plate 41 is rotated in the clockwise direction together with the superior guiding plate 42. As a result, as shown in FIG. 7, The rising portion 30 is further raised to the upper portion by pushing the bottom surface of the dust-entry blocking plate 10 upward, so that the dust-entry blocking plate 10 is further pushed up to the upper portion, so that the amount of rainwater flowing per unit time per unit time is further increased The amount of drainage of the storm drain is also increased in accordance with the amount of precipitation.

The second hinge 43 is referred to as a second hinge 43 for distinguishing the first hinge 14 from the first hinge 14 for opening and closing the outlet cover 13 in the previous dust-entry blocking plate 10. The second hinge 43 is fixedly coupled to the end of the fixing plate 45. The elevating plate 41 and the superior plate 42 are coupled to each other at the second hinge 43, 42 are mutually independent and mutually variable. 5 to 8, the lifting plate 41 and the fine guide plate 42 are rotated in the clockwise direction in accordance with the increase in the amount of precipitation, and when the rain has passed and the rainwater in the excellent holding tank 44 escapes, And returns to the state of FIG. 5 in the state of FIG.

10A and 10B, the engaging portion 22 formed on the outer circumferential surface of the outer tube 21 is moved downward from the bearing bar 3 on the bearing bar 3 of the steel grating S, The lifting and lowering of the lifting portion 30 can be suppressed by engaging the stepped portion.

The drain hole 441 must be located at the bottom of the bottom of the excellent reservoir 44 so that all the rainwater can be drained through the drain hole 441 formed in the excellent reservoir 44, And a drain hole 441 is formed at the lowest position of the inclined surface.

Referring to FIG. 4, the excellent retainer 44, the excellent guide plate 42, and the second hinge 43 are provided one by one on one surface of the collecting surface, while the fixing plate 45, the anchor bolt Since the elevating plate 41 is provided for each of the elevating portions 30 so that the elevating and retracting portions 30 are connected to the elevating portions 30 at a high level to raise and lower the dirt inlet blocking plate 10, When filled, balance should be maintained such that the superior containment vessel (44) is not tilted to either side. Therefore, as shown in Figs. 8 and 9, the inclination of the bottom of the excellent retentate basin 44 should be formed so that both sides are symmetrical to each other.

Therefore, in FIGS. 8 and 9, the center of the bottom of the excellent retentate basin 44 is formed to be the highest, the inclination is formed so as to become lower toward both sides with respect to the center, and the drainage hole 441 is disposed at the lowest point. However, since both sides should be symmetrical so that they are not tilted to either side, the center may be the lowest, and both sides may be inclined higher. In this case, it is preferable that the drain hole 441 is formed at the center.

11A and 11B show a second embodiment of the second lifting unit.

11A and 11B, the second lift portion is provided to each grid of the steel grating S so that the second lift portion can be drawn out to the outlet of the dust entry blocking plate 10, When the maintenance of the subsidiary itself is required, it can be easily withdrawn.

The second lifting and lowering portion specifically includes a leaf spring 56 that is brought into close contact with an inner surface of the bearing bar 3 forming a lattice of the steel grating S by applying an elastic force to the inner surface of the bearing bar 3, A second lift plate 51 disposed between the plate spring support plate 55 and a second lift plate 51 so as to be variable and to be disposed at the end of the step T A second excellent guide plate 52 which is hingedly coupled to the second lift plate 51 by a second hinge 53 so as to be integrally variable together with the second lift plate 51, And a second excellent retaining cylinder 54 coupled to a lower portion of the second superior guide plate 52. The plate spring supporting plate 55 is fixedly connected to the second hinge 53. [

11A and 11B are represented by an operating state in which the variable of the second lift portion is continuous. As shown in the figure, the leaf spring support plate 55 is fixed together with the leaf spring 56 and is not variable. When the rainwater is filled in the second excellent retention tank 54, And the second lifting plate 51 is interlocked with the second superior guiding plate 52 about the second hinge 53. The second lifting plate 51 is rotated about the second hinge 53 in the clockwise direction about the second hinge 53, The lifting portion 30 including the outer tube 21 and the entire link portion 20 are lifted.

11A and 11B, the second hinge 43 is composed of a fixed shaft 532 that is not variable and a variable shaft 531 that is variable, so that the fixed shaft 532 supports the leaf spring 56 And the variable shaft 531 is rotatably connected to the second spring guide plate 52 and the second lift plate 51 so as to be variable.

Particularly, the plate spring 56 can press the bearing bar 3 of the steel grating S with an elastic force so that the entire second lift part can be fixed. Thus, the first spring part 56 of the second lift part shown in FIGS. The anchor bolts 46 fixing the second lift portion can be omitted and at the same time the entire second lift portion can be drawn out to the outflow port so that the second lift portion can be easily drawn out when the maintenance of the second lift portion itself is required do.

11A and 11B, a second drainage hole 541 is formed in the second excellent reservoir 54, and the second drainage hole 541 is formed in each of the second excellent reservoir 54 Sectional area of the second drain hole 541 is smaller than the total cross-sectional area of the inflow hole 12 formed in the dirt inflow and blocking plate 10 so that the raising and lowering portion 30 and the link portion 20 are formed in accordance with the amount of precipitation during rain. Thereby raising the whole.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

S: Steel grating T: Step
3: Bearing bar 3-1: Bearing bar Downward step
4: Endbar 5: Crossbar
10: dust inflow blocking plate 11: valve body
12: Excellent inflow hole 13: Outlet cover
14: first hinge 15: fastening screw
20: link portion 21: outer tube
22: fastening part 23: tension spring
24: compression spring 30:
31: Box 32: Absorbent Expander
33: upper plate 40: second lift portion
41: a steel plate 42: an excellent guide plate
43: second hinge 44:
45: Fixing plate 46: Anchor bolt
51: second lift plate 52: second excellent guide plate
53: second hinge 54: second excellent reservoir
55: Plate spring support plate 56: Plate spring
441: drain 531: variable axis
532: Fixed shaft 541: Second drainage hole

Claims

A cylindrical body having an upper portion formed as an opening portion and having a step formed inward along an inner circumferential surface of the opening portion and being embedded in a road surface so as to expose an opening portion and having a drain port connected to the sewage pipe; The present invention relates to an apparatus for preventing the infiltration of fine alumina into an interior of a superior alum made of steel grating,
A plate having a larger area than the steel grating and disposed on the upper part of the steel grating, the plate having at least one fine inflow hole formed therein;
And is inserted into the grid of the steel grating and is seated on the upper surface of the step of the collecting, and the absorption expander is built in. The absorption expander is expanded due to water absorption of the absorption expander, ;
And a separation preventing member for separating the dust inflow blocking plate by connecting the bottom of the dust inflow blocking plate and the step to prevent the separation of the dust inflow blocking plate. The separation preventing member has a stretchable link portion longer than the distance between the upper surface of the step and the upper end of the steel grating And a device for preventing infiltration of sub-soil.

The method according to claim 1,
Wherein the dust inflow blocking plate is provided with a draw-out opening through which the lift-up portion can be drawn out, a draw-out cover which can be opened and closed at the draw-out opening, and the excellent inflow hole is formed in the draw-out cover.

3. The method of claim 2,
Wherein the outlet cover is hinged to the dust inlet / outlet plate and includes an outlet cover locking unit.

The method of claim 3,
Wherein the elevating portion is a box in which an absorptive expander is embedded, the upper plate of the box being able to be elevated while being guided to the side wall in accordance with the expansion of the absorptive expandable material,
Wherein the link portion further comprises a compression spring disposed between an upper surface of the upper plate and a bottom surface of the outlet cover.

5. The method of claim 4,
Wherein the top plate is made of a porous material through which moisture permeates.

5. The method of claim 4,
Wherein the release preventing member is a tension spring connecting the bottom surface of the outlet cover and the upper surface of the stepped portion of the collecting fixture.

5. The method of claim 4,
The link portion is a tube body surrounding the outer peripheral surface of the compression spring so as to surround the outer circumferential surface of the compression spring. The tube portion further includes an outer tube having a height lower than that of the compression spring. The outer tube has an engaging portion protruding horizontally along the outer surface, Wherein the distance between the center of the bearing bar and the top of the bearing bar is greater than the distance between the center of the bearing bar and the bottom of the bearing bar.

3. The method of claim 2,
And a second lifting portion for vertically changing the lifting portion in accordance with the load of the cylinder so that the plate disposed between the elevating portion of the collecting means and the elevating portion is connected to the reservoir through which the rainwater is retained. Prevention device.

9. The method of claim 8,
The second lifting unit includes a fixing plate integrally formed with a hinge fixed to the upper surface of the collecting step by an anchor bolt and disposed at the end of the step, a lifting plate disposed on the upper surface of the fixing plate, and a hinge And a bottom plate provided with at least one drain hole, wherein the plate is a steel plate, and the steel plate is a steel plate having an angle of And one for each elevation part.

10. The method of claim 9,
Wherein the total cross-sectional area of the one or more drain holes is smaller than the total cross-sectional area of the superior inflow hole.

10. The method of claim 9,
Wherein the bottom of the excellent retentate is formed with a slope and the drainage hole is formed at the lowest position in the bottom of the bottom of the excellent retentate.

12. The method of claim 11,
Wherein the slope of the excellent retentate is formed symmetrically with respect to a center of the excellent retentate in the longitudinal direction.

9. The method of claim 8,
The second lifting unit includes a plate spring urged by elastic force on both inner surfaces of the grating of the steel grating, a plate spring supporting plate supporting the lower end of the plate spring and fixed by the leaf spring, a second lifting plate disposed between the plate spring supporting plate, A second excellent guide plate hingedly connected to the second lift steel plate by a second hinge and integrally changing together with the lift plate, Wherein the plate spring supporting plate is fixedly connected to the second hinge.

14. The method of claim 13,
Wherein the second elevating portion is disposed for each inside of one grid of the steel grating, and the elevating portion, the second elevating portion, and the link portion can be drawn out to the outlet.

14. The method of claim 13,
Wherein a second drain hole is formed in the second excellent reservoir and a total cross-sectional area of a second drain hole formed in each second excellent reservoir is smaller than a total cross-sectional area of the excellent inflow hole. .