CN103542159A

CN103542159A - Air evacuation valve

Info

Publication number: CN103542159A
Application number: CN201310469556.0A
Authority: CN
Inventors: 吴尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-26
Filing date: 2013-09-26
Publication date: 2014-01-29

Abstract

The invention relates to an air evacuation valve which is used for achieving the aim that a plurality of siphons are connected to form a pipe which is provided with openings at the two ends and used for conveying liquid. The air evacuation valve is particularly characterized in that the air evacuation valve is installed at the relatively-high position of the corresponding siphon, a cavity is formed in a valve body of the air evacuation valve, a float valve element can vertically move in the cavity, and when air exists at the relatively-high position of the corresponding siphon, the air can be effectively evacuated out by the air evacuation valve. When the pressure intensity of liquid in the corresponding siphon is continuously increased, the float valve element upwards moves under the buoyancy effect of the liquid, an upper valve seat opening is automatically sealed, and the liquid is prevented from flowing out. When the pressure intensity in the corresponding siphon is smaller than the outside barometric pressure, the float valve element downwards moves, a lower valve seat opening is automatically sealed, outside air is prevented from entering the corresponding siphon, and the liquid can be normally conveyed in the corresponding siphon. Compared with the method that the multiple siphons are not adopted to be connected and a bridge is paved under a pipe, the method that the multiple siphons are connected saves cost.

Description

Outlet valve

Technical field

The present invention relates to valve, particularly a kind of drain tap.

Background technique

In the past with present syphon tube conveying liquid body technique: be a syphon tube, one end position is high, the other end position is low, liquid is introduced to one end, high position, pipeline is downwards after camber line bending, utilize the attraction field of force of the earth, from syphon tube lower position, flow out, if several syphon tubes are connected, the conveyance conduit that is linked to be a head and the tail opening, after cutout owing to having sealed one section of gas at place, the relative high position of some syphon tubes, give again infusion fluid in conveyance conduit, very large resistance in pipe, conveying liquid is obstructed, present solution: large-scale conveying liquid engineering, laying siphonal position, bridge is laid in piling, crooked syphon tube is become and is bordering on downward-sloping rectilinear duct, be fixed on bridge, laying bridge investment is huge.

Summary of the invention

Object of the present invention: carry liquid to lay bridge for above large-scale pipeline, invest hugely, if the conveying liquid body technique that adopts several syphon tubes to be linked to be the pipeline of a both ends open just need not be laid bridge, this technology is improved.

In order to achieve the above object, the present invention adopts and does not lay bridge, adopt many syphon tubes to join end to end, the pipe that is linked to be a both ends open, in the relatively high position of syphon tube, every place, install outlet valve, after cutout, again carry liquid, gas in the place's sealing of the relative high position of syphon tube, from outlet valve, automatically get rid of, make siphon liquid in pipe Channel Group, outlet valve is by valve body, float spool, conveyance conduit forms, the concrete structure of outlet valve: have a cavity in valve body, being connected with an exhaust passage with cavity upper end communicates with the external world, cavity intermediate section is cylindrical, cavity upper end is frustoconic shape valve seat, handle is upper, call valve seat, cavity lower end is frustoconic shape valve seat, handle under, be lower valve base, in cavity, there is a float spool, empty in spool (or in spool in packing ratio anharmonic ratio conveyance conduit the little material of liquid specific gravity), float spool intermediate section shell is cylindrical, several ribs of the outwardly convex that distributing on cylinder blanket, Leng Yu cylindrical center line parallel, spool upper end is conical, call spool, lower end is conical, be lower valve core, spool is an obturator, upper valve base and upper valve core, tapering is identical, lower valve base is identical with lower valve core tapering, when in syphon tube (pipe-line for conveying liquids), the gas pressure intensity at place, high position increases relatively, float spool moves up, gas removes from the interstitial row between lower valve core and lower valve base, from the exhaust passage of upper valve base upper end, get rid of, when conveyance conduit is full of liquid, when the gap between valve body inner cavity and spool shell is full of liquid, the buoyancy of liquid to spool, float spool is moved up, upper valve base and upper valve core sealing fasten, stop liquid to release from the exhaust passage of upper valve base upper end, when in liquid-transport pipe-line, pressure is less than external atmosphere pressure, float spool moves down, lower valve core sealing lower valve base, stop ambient air to enter in liquid-transport pipe-line, liquid-transport pipe-line (syphon tube) transfusion is normally carried out, spool in valve cavity can be spherical or cylindrical, if cylindrical spool, the moulding of body cavity body upper/lower terminal valve seat is also circular cylindrical cavity, distributing the equally rib of outwardly convex of the shell of cylindrical spool, and rib is parallel with cylindrical spool center line.

In carrying liquid process, because the present invention installs outlet valve assisted transfusion body at place, the relative high position of a plurality of syphon tubes that are connected, with need not be connected by a plurality of syphon tubes, in this section, lay bridge, on bridge, tubing carries liquid to compare, the present invention saves substantial contribution, is beneficial to pipe-line for conveying liquids buried, facilitates and carries liquid winter.

Accompanying drawing explanation

Fig. 1 is structural drawing of the present invention

A-A section shows the structure between float spool and body cavity body

Embodiment

The present invention is further described below in conjunction with the specific embodiment in Figure of description, referring to 1 page of Fig. 1 of Figure of description, a plurality of syphon tubes join end to end and form the conveyance conduit of a both ends open, each outlet valve is arranged on the place, relative high position of conveyance conduit, outlet valve is by valve body 6, conveyance conduit 1, float spool forms, concrete structure: conveyance conduit 1, there is flange 2 at two ends, the profile of valve body 6 is cylindrical, its lower end is attached on the tube wall of conveyance conduit 1, in valve body 6, there is a cavity, cavity intermediate section is cylindrical body, upper end is Rotary-table valve seat 8, handle is upper, call valve seat, cavity lower end is Rotary-table valve seat 4, handle under, be lower valve base, there is an air vent 9 to communicate with the external world with upper valve base 8 upper ends, lower valve base 4 lower ends have a passage to communicate with pipe-line for conveying liquids 1, in valve body cavity, there is a float spool, float spool is the obturator (or at the little material of float-controlled valve in-core packing ratio anharmonic ratio conveyance conduit liquid specific gravity) of interior sky, float spool intermediate section shell 5 is cylindrical, referring to A-A section: four ribs of the outwardly convex that distributing on its shell, Leng Yu cylindrical center line parallel, make spool intermediate section be cylindrical shell 5 and have annular space with the inwall of valve body 6, be beneficial to gas and liquid passes through, spool cylindrical body upper end is upper valve core 7, be conical, the end under, spool cylindrical body lower end is lower valve core 3, be conical, the end, is upper, form an airtight float spool, upper valve core 7 is identical with upper valve base 8 taperings, lower valve core 3 is identical with lower valve base 4 taperings, when in syphon tube, the gas pressure intensity at place, high position increases relatively, float spool moves up, gas removes from the interstitial row between lower valve base 4 and lower valve core 3, from upper valve base upper end air vent 9, be discharged to the external world, while being full of liquid in syphon tube, can be full of liquid in the gap between valve body inner cavity and float spool, the buoyancy of liquid to float spool, float spool is moved up, upper valve core 7 fastens sealing with upper valve base 8, stop liquid to release from the exhaust passage 9 of upper valve base 8, when whole conveyance conduit is during the air scavenge at place, the relative high position of siphon piping, liquid Channel Group in conveyance conduit, the interior liquid pressure of pipeline 1 is less than external atmosphere pressure, in valve body, float spool moves down, sealing lower valve base 4, stop ambient air to enter in liquid-transport pipe-line 1.

Claims

1. an outlet valve, comprise that valve is blue, valve body, the lower end of valve body is connected with delivery pipe outer wall, its feature: have a cavity in valve body, cavity intermediate section is cylindrical, in cavity, upper end is frustoconic shape, it is upper valve base, osculum is upper, in cavity, lower end is frustoconic shape, it is lower valve base, osculum under, the upper end of upper valve base has an exhaust passage to communicate with the external world, the lower end of lower valve base communicates with liquid-transport pipe-line, in cavity, there is a float spool, when in conveyance conduit, gas pressure intensity increases, gas is pushing away float spool and is moving up, gas removes from the interstitial row between float spool and lower valve base, when in pipeline, liquid pressure increases, the buoyancy that liquid produces float spool, promote float spool and be moved upwards up to upper valve base, and seal upper valve base, when in conveyance conduit, liquid pressure is less than external atmosphere pressure, float spool moves down, and seal lower valve base.

2. according to outlet valve claimed in claim 1, its feature: float-controlled valve in-core empty (or in float-controlled valve in-core packing ratio anharmonic ratio liquid-transport pipe-line the little material of liquid specific gravity), float spool intermediate section is cylindrical, the rib of several outwardly convexs that distributing on cylinder blanket, every rib parallel cylinder center line, on float spool, it is conical that lower two ends are, two conical bottom are combined into obturator with float spool cylinder upper base with going to the bottom respectively, float spool upper end is identical with upper valve base tapering, and can seal upper valve base, float spool lower end is identical with lower valve end seat tapering, and can seal lower valve base.

3. according to outlet valve claimed in claim 1, its feature: float spool is spherical in shape or cylindrical is also passable, if float spool is cylindrical, the moulding of body cavity body upper/lower terminal valve seat is also cylindrical, the rib of same several outwardly convexs that distribute on float spool cylindrical shell, rib is parallel with cylindrical body center line.