JP3085013U - U-shaped groove with check valve - Google Patents

Abstract

(57) [Summary] [Problem] A resin U-shaped groove used for a drainage canal, etc.
Provided is a U-shaped groove provided with a check valve, which prevents the groundwater level from rising due to a rise in the groundwater level due to heavy rain or melting snow. SOLUTION: In a U-shaped groove 10 having a substantially U-shaped cross-section and connected in the longitudinal direction to form a drainage channel or the like, a U-shaped groove main body 12 is formed by integral molding of resin, A check valve 28 is provided on the side wall portion 18 of the U-shaped groove body 12 to allow water to flow from the outside of the U-shaped groove into the U-shaped groove and to prevent water from flowing from the U-shaped groove to the outside.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a U-shaped groove with a check valve in which a check valve is attached to a U-shaped groove made of resin.

[0002]

[Prior art]

 Conventionally, concrete U-shaped grooves for constructing drainage channels and the like are mainly made of concrete. However, U-shaped grooves made of resin have recently been used. Resin U-shaped grooves are lighter than concrete U-shaped grooves, so they can be easily installed and transported, and can be used in mountainous areas and slopes where construction work is difficult. It can be used favorably when working.

[0003]

[Problems to be solved by the invention]

 However, since the main body is buried in the ground in the U-shaped groove, there is a problem that the buried U-shaped groove is affected by groundwater and water flowing into the surroundings. The groundwater level may rise to the side of the U-shaped ditch during heavy rain or during the thaw in early spring. When the groundwater or the like rises above the bottom of the U-shaped groove, the resin-made U-shaped groove is lifted by buoyancy by the groundwater or the like because the U-shaped groove is lightweight. As a result, at the time of construction, the U-shaped ditch, which was neatly arranged at the time of construction, is distorted due to the influence of groundwater, so that water does not flow as intended, and the appearance of the drainage channel becomes poor. The groundwater level fluctuates in various ways depending on natural conditions, and if the drainage channel constructed using U-shaped grooves is distorted or irregular, it is wasteful to repeat the construction every time. become.

Therefore, the present invention has been made to solve these problems, and an object of the present invention is to make it possible to use resin even when the buoyancy acts on the U-shaped groove due to the rise of the groundwater level. The present invention provides a U-shaped groove with a check valve, which makes it possible to prevent a U-shaped groove made of steel from rising.

[0005]

[Means for Solving the Problems]

 The present invention has the following configuration to achieve the above object. That is, in a U-shaped groove having a substantially U-shaped cross-section and being connected in the longitudinal direction to form a drainage passage or the like, the U-shaped groove main body is formed by integral molding of resin. The side wall is provided with a check valve that allows water to flow from outside the U-shaped groove into the U-shaped groove and prevents water from flowing from the U-shaped groove to the outside. Further, the check valve includes an outer member having a built-in check member and formed in a cylindrical shape, and an inner member screwed to the outer member, and a fitting hole passing through the side wall portion. Wherein the outer member and the inner member are screwed to each other via a through hole, and a check valve is attached to the side wall portion. According to this, the check valve can be easily installed in the U-shaped groove main body.

A check valve body is built in the outer member, one end of the outer member is inserted into the fitting hole, and the cap-shaped inner member is connected to one end of the outer member. The outer member and the inner member are screwed to the side and fastened and fixed to the side wall portion.

[0007]

[Embodiment of the invention]

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a configuration of an embodiment of a U-shaped groove with a check valve. The U-shaped groove 10 includes a U-shaped groove main body 12 and a reinforcing member 14. The U-shaped groove main body 12 is made of a resin material, and the bottom wall portion 16 and both side wall portions 18 are integrally formed to have a U-shaped cross section. In the U-shaped groove 10 of the present embodiment, the U-shaped groove main body 12 has a corrugated shape in which a large number of ridges 20 and ridges 22 are formed in a direction perpendicular to the longitudinal direction, and the reinforcing member 14 is applied. It is constituted by a bridging member 26 provided so as to bridge between the members 24, 24 and the fitting members 24, 24. The reinforcing member 14 prevents the side walls 18, 18 from falling down due to earth pressure.

A feature of the U-shaped groove according to the present invention is that a check valve 28 is provided in the U-shaped groove 10. The check valve 28 includes an outer member 30 and an inner member 32, and the outer member 30 and the inner member are inserted into holes (fitting holes 48 shown in FIG. 5) provided in the side wall portion 18 of the U-shaped groove main body 12. Install by screwing 32 together. As shown in FIG. 1, the check valve 28 is provided so as to horizontally project inward and outward on the side wall portion 18 of the U-shaped groove body. Water from the outside flows into the U-shaped groove, and water inside the U-shaped groove is formed. Of water does not flow out.

FIG. 2A shows a side view of the outer member 30 of the check valve 28. The outer member 30 is formed in a cylindrical shape, a male screw 34 is formed on the outer peripheral surface on one end side, and a locking projection 36 whose diameter gradually increases from the end surface toward the center is provided on the other end side. I have. When the outer member 30 is inserted into the fitting hole 48 provided in the side wall portion 18 of the U-shaped groove main body 12, the locking projection 36 comes into contact with the inner peripheral edge of the fitting hole 48 to lock the outer member 30. Acts as a stopper.

FIG. 3A is a sectional view showing the internal structure of the outer member 30. A valve body 38 is provided at a substantially central portion inside the outer member 30, one end side is opened, and a water passage hole 40 a is provided at the other end side. The valve body 38 has an elliptical shape capable of closing the inner surface of the outer member 30. One end is rotatably supported on the inner wall of the outer member 30, and the other end is provided on the inner wall of the outer member 30. The stopper 42 is provided so as to come into contact with the stopper when closed.

The operation of the valve body 38 will be described. When water enters through the water passage hole 40a, that is, when water intrudes into the inside from the outside of the U-shaped groove, the pressure of the intruded water causes the valve body 38 to move one end side where the shaft is stopped. As the fulcrum, the lower end is inclined toward the opening to allow water to flow. On the other hand, when water enters from the opening side, that is, in the direction in which water flows from the inside of the U-shaped groove to the outside, the lower end edge of the valve body 38 contacts the stopper step 42 due to the pressure of the water, and the outer member Blocking the inner surface of 30 prevents water flow.

FIG. 4A shows a front shape of the outer member 30. In the present embodiment, four water passage holes 40a are provided, but the shape and number of the water passage holes 40a are not limited thereto. The outer end of the outer member 30 may be completely open. However, by providing a small-diameter water hole 40a, stones and mud are prevented from entering the U-shaped groove. can do. It is also possible to provide a net in the water passage hole 40a in order to prevent intrusion of sand, mud and the like.

FIG. 2B shows a side shape of the inner member 32. The inner member 32 is formed in a cap shape to be screwed with the outer member 30, and the outer peripheral surface is provided with protrusions 44 at regular intervals in the circumferential direction. The protrusion 44 acts as a non-slip when attaching the inner member 32 to the outer member 30. FIG. 3B is a cross-sectional view illustrating the internal structure of the inner member 32. A female screw 46 with which the male screw 34 of the outer member 30 is screwed is provided on the inner peripheral surface of the inner member 32, and a water hole 40 b is provided at one end of the inner member 32. FIG. 4B shows the front shape of the inner member 32. In the present embodiment, five water passage holes 40b are provided, but the shape and the number can be appropriately selected similarly to the water passage holes 40a of the outer member 30.

FIG. 5 is an enlarged top view showing a state in which the check valve 28 is installed on the side wall portion 18 of the U-shaped groove main body. In the figure, the upper side than the U-shaped groove main body 12 is outside, and the lower side is the inside of the U-shaped groove. The check valve 28 is attached to the ridge 22 of the U-shaped groove main body 12. At a predetermined position of the ridge 32, the outer member 30 is inserted from the outside into the fitting hole 48 provided so that the diameter of the check valve 38 formed in a cylindrical shape can enter without a gap, and the inner member 32 is inserted from the inside. Then, the check valve 28 is attached to the U-shaped groove main body 12 by screwing each other. The locking projection 36 provided on the outer member 30 abuts on the outer side wall 18 of the U-shaped groove main body 12, and the other end surface of the inner member 32 abuts on the inner side wall 18. The stop valve 28 is installed in a fixed state. If the check valve 28 is installed as it is on the convex portion of the U-shaped groove main body 12, there will be a gap between the engaging projection 36 of the outer member 30 and the surface where the other end surface of the inner member 32 and the side wall portion 18 contact. . Therefore, the check valve 28 can be installed without a gap by forming the side wall portion 18 on a flat surface in the portion where the check valve 28 is installed and in the vicinity thereof. Note that the check valve 28 may have a check mechanism such as using a float instead of the valve body 38, and is not limited to the structure of the check valve 28 of the present embodiment.

When the resin-made U-shaped groove having a check valve according to the present embodiment is constructed, similarly to the U-shaped groove having no check valve, a groove capable of accommodating the U-shaped groove is dug in the ground. It should be buried in the ground with the upper part of the main unit opened, and connected with a slight inclination in the direction of flowing water. The check valve 28 may be installed after being attached to the side wall portion 18 in advance, or since the work of mounting the check valve 28 is easy, the check valve 28 is installed after the U-shaped groove is installed at the construction site. May be installed. The position where the check valve 28 is installed in the U-shaped groove main body 12 may be set to an appropriate height and an appropriate interval. It is also possible to provide check valves 28 at different heights, thereby enabling drainage corresponding to fluctuations in the groundwater level.

As described above, when the groundwater level rises due to heavy rain, snowmelt, or the like, the U-shaped grooves arranged in an orderly manner are distorted. This is because the underground water level is higher than the water level of the water flowing in the U-shaped groove, and the U-shaped groove rises due to buoyancy. Therefore, it can be solved by making the water level in the U-shaped ditch the same as the groundwater level.

In the check valve 28 provided in the resin U-shaped groove according to the present invention, water outside the U-shaped groove flows into the U-shaped groove, and water inside the U-shaped groove does not flow out. It has a check structure. Therefore, if the groundwater level rises above the water level in the U-shaped groove, the external water flows into the U-shaped groove until the water level becomes equal to the water level in the U-shaped groove by the check valve 28 provided in the U-shaped groove. The water level inside will maintain the same level as the groundwater level. As a result, when the groundwater level rises above the position where the check valve 28 of the U-shaped groove is attached, the U-shaped groove can be prevented from rising without receiving buoyancy from the groundwater level. In addition, by allowing soil water to flow into the U-shaped groove, the water can be smoothly drained from the U-shaped groove.

[0018] Even when the groundwater level rises to the side of the U-shaped groove, the check valve does not operate if the water level inside the U-shaped groove is higher, but due to the weight of the water in the U-shaped groove, It is not affected by the groundwater level. Thus, according to the U-shaped groove with a check valve according to the present invention, even when the groundwater level reaches the height position where the U-shaped groove is installed, the U-shaped groove is lifted by the buoyancy of the groundwater level, It is possible to solve the problems that the predetermined drainage is not performed and the connection state of the U-shaped groove is irregular.

Although the U-shaped groove of the present embodiment is made of resin in which the U-shaped groove main body 12 is provided with the concave ridge 20 and the convex ridge 22, the U-shaped groove main body 12 has the concave ridge 20 and the convex ridge 22. The present invention is not limited to the product provided with the ridges 22, and the same effect can be obtained in the case of a product in which the U-shaped groove main body 12 is simply formed in a flat shape.

[0020]

[Effect of the invention]

 According to the U-shaped groove with a check valve according to the present invention, as described above, the check valve is provided on the side wall of the U-shaped groove made of resin, so that the groundwater level rises due to heavy rain, snowmelt, etc. It is possible to prevent the groove from rising even if it receives buoyancy, and it is possible to construct a highly reliable water channel and drainage channel.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an embodiment of a U-shaped groove with a check valve of the present invention.

FIG. 2 is a side view showing a configuration of a check valve.

FIG. 3 is a side sectional view showing a configuration of a check valve.

FIG. 4 is a front view showing a configuration of a check valve.

FIG. 5 is a top view showing a configuration in which a check valve is installed in a U-shaped groove.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 U-shaped groove 12 U-shaped groove main body 14 reinforcing material 16 bottom wall part 18 side wall part 20 concave line 22 convex line 24 applying member 26 bridging member 28 check valve 30 outer member 32 inner member 34 male screw 36 locking projection 38 Valve body 40a, 40b Water passage hole 42 Stopper step 44 Projection 46 Female screw 48 Fitting hole

Claims (3)

[Utility model registration claims] 1. A U-shaped groove having a substantially U-shaped cross-section and connected in a longitudinal direction to form a drainage passage or the like, wherein the U-shaped groove main body is formed by integral molding of a resin. A check valve is provided on the side wall portion of the groove main body, wherein a check valve is provided to allow water to flow from outside the U-shaped groove into the U-shaped groove and to prevent water from flowing from the U-shaped groove to the outside. U-shaped groove. 2. The non-return valve comprises an outer member having a built-in check member and formed in a cylindrical shape, and an inner member screwed to the outer member, and penetrates the side wall portion. The U-shaped groove with a check valve according to claim 1, wherein the outer member and the inner member are screwed to each other via a fitting hole, and a check valve is attached to a side wall portion. 3. A check valve body is built in the outer member, one end of the outer member is inserted into the fitting hole, and the cap-shaped inner member is connected to one end of the outer member. 3. The U-shaped groove with a check valve according to claim 2, wherein the outer member and the inner member are screwed to the side and fastened and fixed to the side wall.