CN2422354Y

CN2422354Y - Water pressure self-sealing pedal valve

Info

Publication number: CN2422354Y
Application number: CN 99231494
Authority: CN
Inventors: 夏铸生; 王旦初
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-29
Filing date: 1999-04-29
Publication date: 2001-03-07
Anticipated expiration: 2009-04-29

Abstract

The utility model discloses a water pressure self-sealing pedal valve. A valve core, a cylindrical outer sleeve, a valve rod with a cross head and a valve clack form a switching sealing system which is independent of a valve body, and the valve core is fixed on the valve body through a locking nut. The pressure of liquids in a pipeline pushes against the valve clack to the lower end face of the cylindrical outer sleeve to cause the valve clack to be automatically sealed. Therefore, compared with a spring pressure type sealing pedal valve, the utility model has the advantages of simple structure, reliable sealing, convenient maintenance (The locking nut is dismounted, and the valve core can be taken out to be repaired or replaced.) and low cost.

Description

A kind of water pressure self-closing formula foot valve

The utility model belongs to a kind of valve of foot pedal opening.Particularly a kind of tube road fluid pressure is the valve of driving fit voluntarily.

The valve of foot pedal opening have unlatching fast, the characteristics of closing automatically, therefore for the waste that prevents water resource with prevent that secondary pollution from having obvious effects.Being specially adapted to health, rest rooms such as public place, school of hospital, hotel, hotel installs and uses.

With regard to the foot valve that China makes use at present, its seal means is the spring pressure sealing.The highest hydraulic pressure that spring pressure must may occur greater than territory of use, therefore on designing and producing with other kind valves (as: stop valve, ball valve, gate valve etc.) complex structure of bore, volume is big, consumptive material is many, cost is high.Particularly expose at the unlatching pedal on ground promptly not attractive in appearance also dangerous.Thereby influenced promoting the use of of this kind valve widely.

The purpose of this utility model is to design a kind of simple in structure, sealing is reliable, easy to maintenance, volume is little, cost is low novel foot valve.

Design scheme of the present utility model is: be the folding sealing system that is independent of valve body with spool design.Valve body only plays carrying spool and connecting pipe.Spool mainly by one hole, the both ends open middle part cylinder-shaped coat corresponding with the valve body delivery port and with the overcoat lower end flap of opening encapsulation and dried composition of valve of connection arc pedal and flap each other.Valve is done to be provided with the cover inwall with the flap junction and is the cross supporting member that is slidingly matched, to guarantee passing through and preventing that valve from doing the rolling dynamic deformation of current.Spool is fixed on the valve body by locking nut.Valve is done with the locking nut mesopore and is slidingly matched, and valve is done with the arc pedal and is connected by the screw that can regulate the unlatching distance, to regulate required current size.One back-moving spring is set between arc pedal and the locking nut, closes slowly when low and valve is not dried during pressurized is free to slide to prevent that water from pressing.

The utility model is because spool is a sealing system independently, and flap forms sealing with spool overcoat lower surface under the effect of pipe fluid pressure.Thereby cancelled the part that original foot valve seals by spring pressure.

The utility model than original foot valve by spring pressure sealing have simple in structure, sealing is reliable, consumptive material is few, cost is low, advantages such as (leak as non-pipeline and valve body, only need pull down locking nut, spool is partly taken out finishing or transposing) easy to maintenance.

The utility model is shown in accompanying drawing (cut-away view).

1. dried 5. arcs of valve body 2. spool overcoats 3. locking nuts 4. valves are stepped on

6. set screw 7. back-moving springs 8. flaps 9. cross supporting members

Embodiment

The water pressure self-closing formula foot valve that with the specification is φ 15mm is an example: valve body 1. is by ironcasting fine finishining moulding.Spool overcoat 2. is by copper casting fine finishining moulding.Its external diameter and valve block internal diameter secure fit, internal diameter and valve do to go up cross head and are slidingly matched, with the corresponding hole of valve body delivery port be 12mm.Locking nut 3. is by ironcasting fine finishining moulding, and to be φ 8mm be slidingly matched and be connected with valve body by screw thread with valve is dried mesopore.Valve does 4. by raw steel fine finishining moulding, and cross head and outer casing internal diameter are slidingly matched.Flap 8. is by cast copper fine finishining moulding.φ is that 20mm is slightly less than overcoat lower end sealing surface.Be fixed on the first end of the dried cross of valve with screw thread.Arc pedal 5. is by ironcasting fine finishining moulding.φ 50mm, camber are 15mm, are connect by set screw 6. and valve involvement.Back-moving spring 7. is made by φ 1mm steel wire, places between arc pedal and the locking nut.All sealings place are sealed by rubber cushion or filler.

Claims

The sealed foot valve of a kind of hydraulic pressure, by valve body, valve do, spool overcoat, flap, locking screw, arc pedal etc. form, it is characterized in that: spool is partly by cylinder-shaped coat, the valve of band cross head is done and flap, form the folding closed system that is independent of valve body, utilize the pressure of pipeline inner fluid itself to seal, spool partly is fixed on the valve body by a locking nut and seal gasket.