CN2610642Y

CN2610642Y - Multifunctional safety hydrant

Info

Publication number: CN2610642Y
Application number: CN 02251431
Authority: CN
Inventors: 贾学贡
Original assignee: INST OF WATER CONSERVANCY SCIENCE TONGLIAO CITY
Current assignee: INST OF WATER CONSERVANCY SCIENCE TONGLIAO CITY
Priority date: 2002-12-05
Filing date: 2002-12-05
Publication date: 2004-04-14
Anticipated expiration: 2012-12-05

Abstract

The utility model relates to a multifunctional safety hydrant which is specially used to match the farmland subterranean tube irrigating system, comprising an outer shell 1, a water outlet 2, a water inlet 3, and so on. The utility model is characterized in that the middle part of an upper cover of the outer shell 1 is opened with a screw hole; a screw bar 11 is threaded downwards into the screw hole from the outside; the lower end of the screw bar 11 is fixedly connected with a press plate 10; the two sides of the press plate 10 are opened with via holes 9; a slide press bar 8 is threaded downwards from the via hole 9, and the lower end is fixedly connected with a sealing disk 6; the sealing disk 6 is pressed on the water inlet 3; and a spring 7 is supported between the press plate 10 and the sealing disk. The middle part of the sealing disk is opened with an air hole 4, and the bottom of the air hole 4 is provided with a valve 5 which can open and close. The water inlet of the hydrant is connected on the subterranean water tube, has five great functions of opening, closing, air-breathing, exhausting and decompressing, and better solves the problem that the subterranean tube irrigating system has the tube explosion and the tube flat phenomenon.

Description

The multifunctional safe hydrant

Technical field: the utility model is that a kind of farmland pipe is irritated facility, promptly a kind of multifunctional safe hydrant.

Background technology: it is one of important measures of present farmland water-saving irrigation that the farmland pipe is irritated.The underground plastic water pipe of burying underground in the field to the effect that pipe is irritated is drawn ground at definite position Jiang Shui, irrigates the fields or sprays.The problem of this mode is: when sending water, water hammer pressure can destroy water pipe; During termination of pumping, occur negative pressure in the water pipe and can inhale water pipe flat.Thereby need a kind of equipment that can protect water pipe and other facilities.

Summary of the invention: develop a kind of multifunctional safe hydrant, this hydrant also has a housing, and there is a water inlet housing below, has delivery port on the housing sidewall, different is: the loam cake middle part of housing, have a screw, a screw rod passes from screw and enters in the housing, and the screw rod lower end connects a pressing plate, the pressing plate both sides have through hole, respectively pass a slip depression bar in the through hole, slip depression bar lower end connects a seal disc, and seal disc is pressed on the water inlet; Shock mount between seal disc and the pressing plate, when hydraulic pressure overcame spring pressure, seal disc lifted pressure release; At seal disc middle part, have a pore, a valve is arranged below the pore, valve one end is hinged on seal disc, and when under the valve hydraulic pressure being arranged, valve is upwards closed pore, and when valve down when no hydraulic pressure or negative pressure, valve is opened pore by conducting oneself with dignity sagging.

Adopt the multifunctional safe hydrant of such scheme development, can when water, open bolt, do not close during water, when hydraulic pressure is high, can exhaust, draining, pressure release, when in pipe, negative pressure occurring, can air-breathingly fill, thereby prevented the generation of phenomenons such as booster and flat tube effectively.

Description of drawings: Fig. 1 is a kind of front view of embodiment, and Fig. 2 is its vertical view.

Among the figure as seen: shell 1, delivery port 2, water inlet 3, pore 4, valve 5, seal disc 6, spring 7, slip depression bar 8, through hole 9, pressing plate 10, screw rod 11, loam cake 12.

Embodiment: as shown in the figure, the main body of this hydrant is a housing 1, and the housing side is provided with delivery port 2, is provided with water inlet 3 below, and a seal disc 6 is arranged above the water inlet 3; One deck elastic packing offset plate is arranged below the seal disc 6, and slip depression bar 8 above is connected; Slip depression bar epimere passes the through hole 9 of pressing plate 10, and can slide up and down in through hole, but can not break away from pressing plate 10; Have below the pressing plate 10 spring be pressed in seal disc 6 above; Link to each other with screw rod 11 above the pressing plate 10, screw rod 11 passes from the screw of case top lid 12, and the upper end is provided with the homalocephalus that matches with spanner; Middle part at sealing platen 6 has pore 4, the following valve 5 that is hinged.The water inlet of this hydrant is connected in the threeway of field foggara, and delivery port exposes to the open air more than ground.During water, do not turn screw rod with spanner and move down, spring promptly is pressed in seal disc 6 on the water inlet 3.When the water pipe under the hydrant was anhydrous, valve 5 was sagging by deadweight, and pore 4 is opened, and when current arrived, gas can be discharged by pore 4 in the pipe.When current flow through hydrant and continue to move ahead, valve 5 was lifted by current and closes pore 4, the delivery port 2 not water outlets of hydrant.When very big or in-pipe flow pressure increased suddenly when head pressure, the pressure that whole sealing platen 6 overcomes spring 7 upwards lifted, and a part of water is broken through water inlet 3 and discharged from delivery port 2, and the pressure of water descends immediately, thereby has reached the effect of decompression protection pipeline.Sealing platen 6 after the pressure release is rapid return under the pressure of spring 7 again, blocks water inlet 2, and current continue to move ahead, and arrive the water position.After termination of pumping, when the water in the water pipe refluxed rapidly, valve 5 lost and supports and sagging, and pore 4 is opened, and air can be inhaled into from delivery port 2, enters water pipe by pore 4, thereby avoids negative pressure to inhale flat water pipe.But but as seen this hydrant have can open, Ke Guan, can air-breathing exhaust pressure release five functional, be that the farmland buried pipe is irritated one of indispensable vitals in the middle of the facility.

Claims

1, a kind of multifunctional safe hydrant, a housing (1) is arranged, there is a water inlet (3) housing (1) below, have delivery port (2) on the housing sidewall, it is characterized in that: loam cake (12) middle part of housing (1), have a screw, a screw rod (11) passes from screw and enters in the housing (1), screw rod (11) lower end connects a pressing plate (10), pressing plate (10) both sides have through hole (9), respectively pass a slip depression bar (8) in the through hole (9), slip depression bar (8) lower end connects a seal disc (6), and seal disc (6) is pressed on the water inlet (3); Adorn a spring (7) between seal disc (6) and the pressing plate (10), when hydraulic pressure overcame spring (7) pressure, seal disc (6) lifted pressure release; At seal disc (6) middle part, have a pore (4), a valve (5) is arranged below the pore (4), valve (5) one ends are hinged on seal disc (6), when under the valve (5) hydraulic pressure being arranged, valve (5) upwards lifts closes pore (4), and when following no hydraulic pressure of valve (5) or negative pressure, valve (5) is opened pore (4) by conducting oneself with dignity sagging.