KR100826869B1 - Sinkhole opening and closing apparatus operatable in backward flow - Google Patents

Abstract

A device for opening and closing a drain operated by a backward flow is provided to cut off a drain at ordinary times and to open a drain when draining off rainwater or domestic wastewater, or when flowing backward. A device for opening and closing a drain operated by a backward flow comprises a housing and a plate unit, wherein the housing is inserted to a drain and provided with a hanging projection(101) to make the housing put on the drain and to support a drain cover(200), a backing plate(103) to limit the downward rotation of a first plate, a support plate(105), and stopping pins(107,109) to limit the upward rotation of a first plate and a second plate, and the plate unit is installed to the inside of the housing to make opening and closing movements and composed of a first plate(111) and a second plate(113) to cut off the inside of the housing fully, and auxiliary plates(115) to fill up the space between the two facing second plates and the space between the second plate and the housing, to absorb shock, to prevent abrasion and to smooth a rotational movement.

Description

Drain opening and closing device that can be operated in the reverse flow {SINKHOLE OPENING AND CLOSING APPARATUS OPERATABLE IN BACKWARD FLOW}

The present invention relates to a switchgear installed in a drain on the side of the road, and more particularly, to a drain opening and closing device for blocking the drain in normal times and opening the drain in the case of drainage or backflow of rainwater or domestic sewage.

Generally, drains are formed at certain points along the road so that rainwater or domestic sewage can escape to the sewer. However, as well as rainwater or household sewage, foreign substances such as garbage can be introduced into the drains, and odors generated from the sewers may rise through the drains. In order to prevent this, methods for installing switchgear in drains have been studied.

Conventional drain opening and closing device is a type of opening and closing plate installed inside the drain, to prevent the inflow of debris and odor rise by blocking the drain in normal times, when the rainwater or household sewage flows to open the drain to smoothly discharge action will be.

However, the conventional drain opening and closing device operates only during the drainage of rainwater or domestic sewage and does not operate during the backflow. When heavy rainwater or domestic sewage flows into drains at a time, such as during heavy rains, the discharge of rainwater or domestic sewage does not occur and backflow occurs without exceeding the discharge capacity through sewerage. In this case, the conventional drain opening and closing device manufactured without considering the operation during the reverse flow may easily be broken without enduring the pressure during the reverse flow.

Accordingly, an object of the present invention is to provide a drain opening and closing device that can be operated not only at the time of drainage of rainwater or domestic sewage but also at the time of backflow.

In order to achieve this object, the drain opening and closing device according to an aspect of the present invention comprises a housing and a plate portion. The housing penetrates up and down and is inserted into the drain. The plate portion is composed of a pair of the first plate and the second plate, rotatably installed in the interior of the housing, and usually blocks the drain. When draining rainwater or domestic sewage, the drainage opening is opened while the first plate and the second plate are interlocked, and when draining, the drainage opening is opened while the first plate and the second plate rotate independently. .

The drain opening and closing device according to another aspect of the present invention is a drain opening and closing device that normally blocks the drain and opens the drain in case of drainage or backflow of rainwater or domestic sewage, comprising a housing, a first plate and a second plate. do. The housing penetrates up and down and is inserted into the drain. The first plate is rotatably installed in the housing, and rotates upward in both the drainage and the reverse flow. The second plate is rotatably installed in the housing, rotates downward upon the drainage and rotates upward upon the reverse flow.

The drain opening and closing device of the present invention may further include a hinge portion and a fixing pin. The hinge portion rotatably fastens the first plate and the second plate to each other, and the fixing pin is inserted into the hinge portion and coupled to the housing. In addition, the drain opening and closing device of the present invention may further include a stop pin, the stop pin is formed on the inner surface of the housing, limiting the upward rotation of the first plate and the second plate, respectively.

In the drain opening and closing device of the present invention, it is preferable that the angle formed by the upper surface of the first plate and the upper surface of the second plate in the usual time does not exceed 180 degrees. In addition, the drain opening and closing device of the present invention may further include a stop plate, the stop plate is formed on the bottom of the first plate and extends toward the second plate to limit the downward rotation of the second plate. .

The drain opening and closing device of the present invention may further include an auxiliary plate formed on the bottom and both sides of the second plate, it is preferable that the first plate is heavier than the second plate. In addition, the drain opening and closing device of the present invention may further include a weight that is mounted on the top of the first plate.

According to the present invention, the drain opening and closing device which normally blocks the drain opening not only operates at the time of drainage of rainwater or domestic sewage, but also at the time of backflow. Therefore, it is possible to prevent the problem that the drain opening and closing device is damaged by the backflow pressure of rain water or domestic sewage.

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

In describing the embodiments, descriptions of technical contents that are well known in the art to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly communicate without obscure the core of the present invention by omitting unnecessary description.

1 and 2 are a perspective view and an exploded perspective view of the drain opening and closing device according to an embodiment of the present invention, respectively. In addition, Figure 3 is a cross-sectional view showing the normal state of the drain opening and closing device.

1 to 3, the drain opening and closing device 10 includes a housing 100 and a plate unit 110. In particular, the housing 100 has a locking jaw 101, the pedestal 103, the support 105, the stop pins 107, 109 is formed, the plate portion 110 is the first plate 111, the second plate 113, the auxiliary plate 115. In addition, the weight portion 117, the hinge portion 119, the fixing pin 121, the rotation stop plate 123 is formed in the plate 110.

The housing 100 is inserted into the drain hole 300 in the form of a cylinder through which top and bottom penetrates and blocks in all directions. The housing 100 may be in the form of a square cylinder as shown, but is not necessarily limited thereto, and may also be formed in another form such as a cylindrical shape. The upper end of the housing 100 is bent outward to form a locking jaw 101. The housing 100 inserted into the drain hole 300 is not only mounted on the drain hole 300 through the locking step 101, but also when the drain cover 200 covers the drain hole 300, the locking step 101 is the drain cover. (200) is supported.

The pedestal 103 is formed in the transverse direction on the first inner surface facing each other among the inner surface of the housing 100, and restricts the downward rotation of the first plate 111. The support 105 is formed on the second inner surface of the housing 100 so as to be adjacent to each pedestal 103, and is formed to be inclined downward toward the center so that the first plate 111 is inclined. As will be described later, when the first plate 111 is inclined, the second plate 113 fastened to the first plate 111 by the hinge part 119 may also maintain the same inclination angle as usual.

The stop pins 107 and 109 are formed on the second inner side surface of the housing 100. The first stop pin 107 is positioned above the support 105 adjacent to the support 105, and the second stop pin 109 is located more centrally than the first stop pin 107. The first stop pin 107 and the second stop pin 109 limit upward rotation of the first plate 111 and the second plate 113, respectively.

The plate part 110 is a kind of opening / closing plate installed inside the housing 100 to open and close. Plate portion 110 is composed of two pairs, the central side of the housing 100 is low and the first inner side is installed high. That is, the two pairs of plate portions 110 form a V shape. Hereinafter, in each plate part 110, the plate located on the first inner side of the housing 100 is referred to as the first plate 111 and the plate located on the center of the housing 100 is referred to as the second plate 113. Normally, the two pairs of plate portions 110 completely block the inside of the housing 100 as shown in FIGS. 1 and 3.

The first plate 111 and the second plate 113 are fastened to be rotatable with each other by the hinge portion 119. The hinge portion 119 is coupled to the first plate 111 and the second plate 113 by welding, respectively, and fitted to each other so that insertion holes of a cylindrical or semi-cylindrical shape are engaged. The fixing pin 121 is inserted into the insertion hole of the hinge portion 119, and the fixing pin 121 is coupled to the second inner side surface of the housing 100. That is, the first plate 111 and the second plate 113 may rotate the fixing pin 121, respectively.

Usually, the upper surface of the first plate 111 and the upper surface of the second plate 113 preferably form the same surface with each other. That is, the angle between the two surfaces is preferably 180 degrees. However, when the insertion hole of the hinge portion 119 is a cylindrical shape, the angle between the two surfaces may exceed 180 degrees, so that the rotation stop plate 123 is formed on the bottom of the first plate 111 to maintain 180 degrees. It is good. The rotation stop plate 123 is formed on the bottom surface of the first plate 111 and extends toward the second plate 113 to limit downward rotation of the second plate 113. If the insertion hole of the hinge portion 119 is a semi-cylindrical shape, it can be maintained at an angle of 180 degrees without forming the rotation stop plate 123.

An auxiliary plate 115 is formed on the bottom and both sides of the second plate 113. The auxiliary plate 115 not only fills the gaps between the second plates 113 facing each other and between the second plates 113 and the housing 100, but also cushions and prevents wear and facilitates rotational movement. Therefore, the auxiliary plate 115 is preferably formed of a material having elastic force, such as rubber. On the other hand, the first plate 111 and the second plate 113 is formed of a material such as stainless steel, reinforced plastic, less corrosion or deformation due to rain water or domestic sewage.

Although it will be described later with reference to FIGS. 4 and 5, when the rainwater or domestic sewage drains or flows backward, the plate part 110 opens the drain hole 300 by rotating the fixing pin 121 about its axis. When the discharge or backflow stops, the plate part 110 should return to the normal state of FIG. 3 again to block the drain hole 300, which enables the weight 117. The weight 117 is mounted on the upper end of the first plate 111 so that the first plate 111 side is relatively heavier than the second plate 113 side so that the first plate 111 rotates downward.

Next, with reference to FIGS. 4 and 5, the drainage opening and closing operation of the drain opening and closing device will be described. From the following description, the configuration of the drain opening and closing device according to the present invention will also be more clear.

First, referring to FIG. 4, rainwater or living sewage introduced through the drain cover 200 is collected toward the second plate 113 inclined in a V shape, and the second plate 113 is downward by the load. The drain is opened while rotating (140). The rotation of the plates 111 and 113 is usually heavier due to the weight 117 and the first plate 111 is relatively heavier and the first plate 111 is supported by the pedestal 103 and the support 105. This does not happen. In other words, the drain is completely blocked. However, when rainwater or living sewage gathers toward the second plate 113 and the weight of the second plate 113 becomes relatively large, the space 140 between the second plates 113 is rotated downward while the second plate 113 rotates downward. This will be opened.

On the other hand, since the angle formed between the top surface of the first plate 111 and the top surface of the second plate 113 cannot exceed 180 degrees, the first plate 111 is upward due to the downward rotation of the second plate 113. Will rotate. That is, while the first plate 111 is rotated away from the pedestal 103 and the support 105 toward the first stop pin 107, a space is created between the first plate 111 and the inner surface of the housing.

As such, rainwater or household sewage is discharged through the drain holes through the spaces generated by the rotation of the first and second plates 111 and 113. On the other hand, the rotation of the first plate 111 is limited by the first stop pin 107, thereby limiting the rotation of the second plate 113.

When the inflow of rainwater or domestic sewage is stopped, since the weight of the first plate 111 and the weight 117 is relatively heavy, the first and second plates 111 and 113 are rotated again by their own weight, and thus the original state Return to.

Subsequently, referring to FIG. 5, when rainwater or living sewage flows back through the sewer, the first and second plates 111 and 113 which are closed are opened while rotating by the countercurrent pressure. However, the operation at the time of backflow and the operation at the time of drainage are slightly different as follows.

In the case of drainage, the second plate 113 rotates downward and the first plate 111 rotates upward. The angle of the first and second plates 111 and 113 is maintained at 180 degrees, and the rotation of the plate is limited by the action of the first stop pin 107. On the contrary, in the case of backflow, both the first and second plates 111 and 113 independently rotate while being upwardly folded. In this case, the rotation of the first plate 111 is limited by the first stop pin 107, but the rotation of the second plate 113 is limited by the second stop pin 109.

As such, even in the reverse flow, spaces are generated by independent rotation of the first and second plates 111 and 113, and reverse flow occurs through the spaces. Therefore, the drain opening / closing device is not damaged by the backflow pressure. When the back flow is stopped, the first and second plates 111 and 113 return to their original states while rotating downward by their respective weights.

On the other hand, the second plates 113 facing each other may be inclined downward while being inclined in a normal state, but may be bumped into each other while being rotated upward in reverse flow. .

So far, the drain opening and closing device according to the present invention has been described. In the present specification and drawings, preferred embodiments of the present invention have been disclosed, and although specific terms have been used, these are merely used in a general sense to easily explain the technical contents of the present invention and to help the understanding of the present invention. It is not intended to limit the scope. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

For example, in the above-described embodiment, the plate portion 110 is two pairs, but may be one pair or three or more pairs. In addition, if the length of the first plate 111 is longer than the distance from the fixing pin 121 to the inner surface of the housing 100, the first plate 111 is caught on the inner surface of the housing 100 and is inclined. In this case, the pedestal 103 and the support base 105 can be omitted. In addition, if the weight of the first plate 111 is heavier than the sum of the weights of the second plate 113 and the auxiliary plate 115, it is not necessary to use the weight 107.

1 is a perspective view of the drain opening and closing device according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of the drain opening and closing device according to an embodiment of the present invention.

Figure 3 is a cross-sectional view showing a normal state of the drain opening and closing device according to an embodiment of the present invention.

Figure 4 is a cross-sectional view showing the operation when draining the drain opening and closing device according to an embodiment of the present invention.

Figure 5 is a cross-sectional view showing the operation during the back flow of the drain opening and closing device according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10: drain opening and closing device 100: housing

101: engaging jaw 103: pedestal

105: support 107: first stop pin

109: second stop pin 110: plate portion

111: first plate 113: second plate

115: auxiliary plate 117: weight

119: hinge portion 121: fixing pin

123: stopper plate 200: drain cover

300: drain

Claims (9)

delete In the drain opening and closing device to shut off the drain in normal times and to open the drain in case of drainage or backflow of rainwater or domestic sewage, A housing which penetrates up and down and is inserted into the drain hole; A first plate rotatably installed in the housing, the first plate rotating upwardly during both the drainage and the reverse flow; A second plate rotatably installed in the housing, the second plate rotating downward when the drainage and rotating upward when the countercurrent flows; Drain opening and closing device comprising a. The method of claim 2, A hinge part configured to rotatably fasten the first plate and the second plate to each other; A fixing pin inserted into the hinge portion and coupled to the housing; A drain opening and closing device further comprising. The method of claim 2, A stop pin formed on an inner side of the housing and restricting upward rotation of the first plate and the second plate, respectively; A drain opening and closing device further comprising. The method of claim 2, And the angle formed between the upper surface of the first plate and the upper surface of the second plate is not more than 180 degrees. The method of claim 2, A rotation stop plate formed on a bottom surface of the first plate and extending toward the second plate to limit downward rotation of the second plate; A drain opening and closing device further comprising. The method of claim 2, Auxiliary plates formed on the bottom and both sides of the second plate; Drainage opening and closing device further comprising. The method of claim 2, And the first plate is heavier than the second plate. The method of claim 2, A weight mounted on an upper end of the first plate; Drainage opening and closing device further comprising.

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