JPH0682182U - Centrifugal air vent drainage flow rate cap and drainage device using the cap - Google Patents

Abstract

(57) [Summary] [Purpose] To accelerate the flow rate when draining or supplying water from the reservoir part under natural flow. [Structure] A centrifugal air venting drainage flow rate promoting cap 4 characterized by having at least one guide vane 8 having an inclination angle on an inner wall of a cylindrical body 7 with a collar 6, and the cap 4. And drainage equipment.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a centrifugal air vent drainage flow rate promoting cap and a drainage device using the cap.

[0002]

[Prior art]

 At the outlet connected from the roof trough or eaves gutter to the vertical gutter, a vertical exhaust pipe is inserted into the outlet to exhaust the air mixed in during drainage.

[0003]

[Problems to be solved by the device]

 In the case of this method, the measures taken on the assumption that the cross-sectional integration of the exhaust pipe reduces the cross-sectional area of the outlet and that air is carried from the drainage port, the air entrained in the drainage reaches the underground manhole. When it reaches, there is a problem that the pressure inside the drainage system rises and the drainage function is significantly reduced. That is, the air that has entered the inside of the vertical gutter together with rainwater from the drainage outlet reaches the lower part of the vertical gutter as bubbles, and eventually enters the drainage outlet that penetrates through the falling rainwater. It will rise towards. The bubbles rising inside the vertical gutter significantly reduce the drainage capacity of the vertical gutter, and the tendency becomes more remarkable as the amount of rainwater increases. For this reason, conventionally, the design method of vertical gutter has adopted the method of multiplying the flow coefficient by 0.5 to 0.6. The present invention aims to effectively utilize a cross section of about 50% of a vertical girder by preventing or reducing air mixing when rainwater falls at a drain port.

[0004]

[Means for Solving the Problems]

 The present invention is directed to a centrifugal air vent drainage flow rate promoting cap characterized by having one or more guide vanes 8 having an inclination angle on the inner wall of the collared body 7 with a collar 6, and the cylindrical body 7 with a collar 6 is also provided. A drainage device characterized in that a centrifugal air drainage drainage flow rate promoting cap 4 having one or more guide vanes 8 having an inclination angle on the inner wall of the drainage pipe is provided at the bottom of the trough 1 in the part of the water collecting basin 3. Is the gist. By covering the existing drainage outlet with the cap 4 having the guide vane 8 having one or more inclination angles on the inner wall of the cylindrical body 7 with the collar 6, a swirl flow is forcibly generated when the water falls and the drainage is performed when the water falls. The efficiency of drainage is improved by separating the air and the wastewater that are mixed into the air flow and by discharging the mixed air from the vertical cavity generated in the center of the spiral flow.

[0005]

【Example】

 Next, detailed contents of the present invention will be described based on embodiments. FIG. 1 is a vertical sectional side view of a drainage outlet 2, a water collecting basin 3 and a vertical gutter 5 which are connected to a trough 1, and FIGS. 2 to 4 illustrate a cap 4 according to an embodiment of the present invention. It is a perspective view, a top view, and a vertical side view. That is, as shown in FIG. 1 to FIG. 4, a cap 4 for centrifugal air removal drainage flow rate promotion, in which a guide blade 8 having at least one inclination angle is provided on the inner wall of a cylindrical body 7 having a collar 6 at the upper end, and This is a drainage device in which the cap 4 is provided at the bottom of the trough 1 so that the collar 6 is hooked on the outlet 2 of the water collecting basin 3.

In the figure, 5 is a vertical gutter, and 7 is a cylindrical body that serves as a passage for falling water. Further, the cap according to the embodiment of the present invention does not require modification of existing equipment, and the purpose can be achieved only by covering the existing drainage outlet 2 with the cap 4.

[0007]

[Effect of device]

 As described above, if the existing drainage outlet 2 is covered with the centrifugal air vent drainage flow rate promoting cap 4 of the present invention, the following effects are obtained. It is possible to minimize the mixing of air at the natural drainage outlet 2, and even if air is mixed, it is possible to exhaust the mixed air from the vertical cavity generated in the central part of the spiral flow. Therefore, the reduction of drainage capacity can be minimized and the cross-sectional efficiency can be improved. When the natural drainage outlet 2 has a deep water with little possibility of air inclusion, turbulent flow can be prevented and drainage efficiency can be improved by the rectifying effect of the forcibly generated swirl flow.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a cap according to an embodiment of the present invention.

FIG. 3 is a plan view showing a cap according to an embodiment of the present invention.

FIG. 4 is a vertical sectional side view showing a cap according to an embodiment of the present invention.

[Explanation of symbols]

 1 Valley gutter 2 Drop port 3 Water collecting basin 4 Cap 5 Vertical gutter 6 Tsuba 7 Cylindrical body 8 Guide blade

Claims (2)

[Scope of utility model registration request] 1. A centrifugal air venting drainage flow rate accelerating cap having a guide blade 8 having one or more inclination angles on the inner wall of a cylindrical body 7 with a collar 6. 2. A centrifugal air vent drainage flow rate promoting cap 4 having guide vanes 8 having one or more inclination angles on the inner wall of a cylindrical body 7 with a collar 6 is provided on the bottom of the trough 1 in the portion of the water collecting basin 3. A drainage device characterized by being provided.