CN202440933U

CN202440933U - Backward flow preventing flap valve of drain pipe

Info

Publication number: CN202440933U
Application number: CN2012200080252U
Authority: CN
Inventors: 王红丽; 楚建保; 杨毅辉; 刘建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-10
Filing date: 2012-01-10
Publication date: 2012-09-19
Anticipated expiration: 2022-01-10

Abstract

The utility model belongs to the drainage work field, relates to a backward flow preventing flap valve of a drain pipe, in particular to a drain pipe member which can prevent river water from flowing backward when water in a drainage pipeline drains into a riverway. The flap valve comprises a base, a pipe orifice, a flashboard, a float, a gear box, a driving gear and a driven gear, wherein the flashboard closes and opens along with the ascending and descending of the float. The flap valve opens completely when the water level of the riverway is low, rain water drains successfully, and head loss and silting of the pipeline are avoided. When the water level of the riverway rises and exceeds the pipe orifice, the flap valve closes automatically under the drive of the float, and backward flow of the river water is prevented.

Description

The anti-flap valve that pours in down a chimney of gutter

Technical field

The utility model relates to a kind of gutter to be prevented pouring in down a chimney flap valve, belongs to the drainage works field, and particularly drainage pipe enters the water-drainage tube part that the river course prevents that river from pouring in down a chimney.

Background technology

The urban rainwater discharging generally all is draining in a organized way, and the rainwater of road and block enters the river course through drainage pipe.The flood control standard in river course is higher, and the drainage pipe standard is lower than the river, and during the rainfall of medium and small rainfall, even the drainage pipe water level is higher, and the water level in river course is also relatively low, and rainwater can enter the river course through pipeline.In the smooth area of physical features, the discrepancy in elevation in drainage pipe delivery port and river course is less, and river water level goes up during torrential rain, and river pours in down a chimney to drainage pipe just has the danger that causes waterlogging.Therefore, the drainage pipe position that enters the river course in many physical features flat country all is provided with flap valve.Flap valve is a kind of one way valve, can prevent that river from pouring in down a chimney by automatic open and close.The flashboard of the flap valve of prior art adopts hinge to install on the lock body, is certain inclination angle with the lock body, relies on the gravity of flashboard that the mouth of pipe is sealed, and when there are flowing out in the pipe, inner pipe water pressure backs down flashboard, and rainwater enters the river course.River water level goes up, and when surpassing the outlet of drainage pipe, the water pressure in river course adds the gravity of upper flashboard greater than inner pipe water pressure power, and flashboard seals the mouth of pipe, reaches the purpose that prevents that river from pouring in down a chimney.

But there is certain defective in the flap valve of prior art, and flashboard is by gravity closing, and head loss is bigger, have certain water level just can back down flashboard, is unfavorable for the smooth and easy discharge of current.When in-pipe flow hour, hydraulic pressure can not back down flashboard, when having only water to assemble water level to reach a certain height, just can back down flashboard, drainage pipe causes alluvial easily.

Summary of the invention

The purpose of the utility model provides a kind of gutter prevents pouring in down a chimney flap valve, and its beneficial effect is: can open and close automatically flap valve according to river water level, when river water level is low, open flap valve fully; Rainwater is discharged smoothly; Do not have head loss, can not cause the pipeline alluvial, when river water level goes up above the mouth of pipe; Flap valve is closed automatically, prevents that river from pouring in down a chimney.

The utility model is realized through following technology: be provided with in the exit position that drainage pipe enters the river course that gutter is anti-to pour in down a chimney flap valve, flap valve mainly comprises pedestal 1, the mouth of pipe 2, flashboard 3, float 4, gear-box 5, driving gear 6, driven gear 7.Flashboard 3 links to each other with float 4 through driving gear 6, driven gear 7, and flashboard 3 cuts out and opens with the up-down of float 4.Pedestal 1 is connected as a body pedestal 1 top mounting teeth roller box 5 with the mouth of pipe 2.The inboard of flashboard 3 is inlayed O-ring seal 9 one, and flashboard 3 links to each other with driven gear 7, and float 4 links to each other with driving gear 6 through connecting rod 10, and the diameter of driving gear 6 is bigger than driven gear 7 diameters, both mutual interlocks.During medium and small rainfall, the water level in river course is lower, and float 4, connecting rod 10 fall under the deadweight effect, and the driving gear 6 that is connected with connecting rod 10 drives driven gears 7 rotations, and driven gear 7 links to each other with flashboard 3, and flashboard 3 is opened under the drive of driven gear 7.Otherwise when the rise of river water level water level, float 4 come-ups drive driven gears 7 rotations through connecting rod 10, driving gear 6, and flashboard 3 cuts out, and O-ring seal 9 is installed on the flashboard 3, and quilt is sealed between the flashboard 3 and the mouth of pipe 2, prevents that river from pouring in down a chimney in drainage pipe.

Description of drawings

Fig. 1 is the utility model elevation;

Fig. 2 is the utility model lateral view;

Fig. 3 is the embodiment of flap valve opening;

Fig. 4 is the embodiment of flap valve closed condition.

Among the figure: 1-pedestal, the 2-mouth of pipe, 3-flashboard, 4-float, 5-gear-box, 6-driving gear; The 7-driven gear, 8-installing hole, 9-O-ring seal, 10-connecting rod, 11 locating slots, 12-adjusting knob; The 13-headwall, 14-pipeline, 15-set bolt, 16-flood protection wall, 17-river water level, 18-manhole.

The specific embodiment

The utility model is a kind of member of drainage works, can be made into different calibers, to be fit to the drainage pipe of various calibers.The utility model elevation is seen Fig. 1, and lateral view is seen Fig. 2, and pedestal 1 adopts cast steel processing, and installing hole 8 is arranged all around, and the mouth of pipe 2 and pedestal 1 integrally casting, flashboard 3 also adopt cast steel processing.Gear-box 5, driving gear 6, driven gear 7, connecting rod 10 adopt stainless steel processing.Gear-box 5 is the door font, adopts screw to be fixed on the pedestal 1, and driving gear 6 and driven gear 7 are installed in the gear-box 5, and the diameter of driving gear 6 is bigger than driven gear 7 diameters, both mutual interlocks.Flashboard 3 adopts screw to be connected with driven gear 7, and float 4 adopts foamed plastics to make.The come-up of float 4 and whereabouts; Drive the unlatching and closure of flashboard 3 through connecting rod 10, driving gear 6, driven gear 7; Because the diameter of driving gear 6 is bigger than driven gear 7 diameters, if make according to big three times, float 4 moves up and down and drives 30 ° of driving gear 6 rotations; Driven gear 7 just can drive flashboard 3 half-twists, and the less stroke of float 4 usefulness is accomplished the whole opening process of flashboard 3.The locating slot 11 that one arc arranged on the driving gear 6, through adjusting knob 12 adjustment connecting rods 10 and driving gear 6 in the position of locating slot 11, the position of float 4 in the time of can adjusting flashboard 3 and close.

Embodiment: drainage pipe is installed flap valve in the position that enters the river course, and flap valve should advance the edge, river course, and headwall 13 is built in pipeline 14 exits by laying bricks or stones, the pre-buried set bolt 15 in the position of corresponding installing hole 8.Smear fluid sealant at pipeline 14 and the mouth of pipe 2 contact surfaces, set bolt 15 is tightened flap valve is fixed.The edge, river course is provided with flood protection wall 16, and manhole 18 is set in the top of float 4 so that education.

The utility model operating principle is following: during normal rainfall, river water level 17 is lower, whereabouts under the effect of float 4, connecting rod 10 gravity; Drive driving gear 6 and clockwise rotate, driven gear 7 rotates counterclockwise, and flashboard 3 is driven to be opened; Rainwater discharges naturally, sees Fig. 3.During heavy rain, river water level 17 rises, and float 4 floats; Drivening rod 10, driving gear 6 rotate counterclockwise, and driven gear 7 is driven to clockwise rotate, and flashboard 3 is being cut out by drive; The O-ring seal 9 that flashboard 3 peripheries are inlayed is adjacent on the mouth of pipe 2; The water in river course can not be poured in down a chimney to pipeline 14, play and prevent pouring in down a chimney effect, see Fig. 4.When heavy rain reduces gradually, river water level 17 descends, and float 4 falls, and flashboard 3 is also opened thereupon gradually, and it is normal that storm-water drainage recovers.

Claims

1. a gutter prevents pouring in down a chimney flap valve; Mainly comprise pedestal (1), the mouth of pipe (2), flashboard (3), float (4), gear-box (5), driving gear (6), driven gear (7); It is characterized in that: described flashboard (3) links to each other with float (4) through driving gear (6), driven gear (7), and flashboard (3) cuts out and opens with the up-down of float (4).

2. gutter according to claim 1 is anti-to pour in down a chimney flap valve, and it is characterized in that: described pedestal (1) is connected as a body with the mouth of pipe (2), pedestal (1) top mounting teeth roller box (5).

3. gutter according to claim 1 is anti-to pour in down a chimney flap valve, and it is characterized in that: one O-ring seal (9) inlayed in the inboard of described flashboard (3).

4. gutter according to claim 1 is anti-to pour in down a chimney flap valve, and it is characterized in that: described flashboard (3) links to each other with driven gear (7).

5. gutter according to claim 1 is anti-to pour in down a chimney flap valve, and it is characterized in that: described float (4) links to each other with driving gear (6) through connecting rod (10).

6. gutter according to claim 1 is anti-to pour in down a chimney flap valve, and it is characterized in that: the diameter of described driving gear (6) is bigger than driven gear (7) diameter, both mutual interlocks.