CN2254502Y

CN2254502Y - Stationary-opened floating-ball trap

Info

Publication number: CN2254502Y
Application number: CN 96220214
Authority: CN
Inventors: 陈朝同
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-03
Filing date: 1996-08-03
Publication date: 1997-05-21
Anticipated expiration: 2006-08-03

Abstract

The utility model provides a stationary-opened draining valve with a floating ball. In the utility model, a float is sheathed on an air inlet chamber which is fixed to the lower part of a valve body in a communicating way, and a rubber cover on the top of the float presses and seals an air inlet hole; the top part of a piston supports against a filter screen and a spring, the cross sections at both ends of the piston are different, and the piston is sheathed in the air inlet chamber; an air chamber is fixed on a supporting frame at the bottom of the valve body; an air plug is sheathed at the bottom of the piston. The draining valve is in a stationary-opened type, the deposit of water and oil stain is different. The utility model has the advantages of long service life of equipment, convenient operation and simple and reasonable structure; the utility model is suitable for working in the environment with hard minimal dirt, the probability of the failure is reduced, and the range of application is enlarged.

Description

Floating ball hydrophobic water valve open in usual

The utility model relates to a kind of industrial valve, especially a kind of floating ball hydrophobic water valve open in usual.

The drain valve of domestic production at present mostly is the Normally closed type valve, but the Normally closed type valve passes through at no compressed gas, or air pressure suddenly and can not work when fading away, and causes residual ponding and greasy dirt not to discharge, and make equipment corrosion damage and bursting by freezing, and is not long down to working life.

The purpose of this utility model provides a kind of rational in infrastructure, simple, and the ponding and the greasy dirt amount that rest in the valve are reduced as far as possible, fundamentally reduces the probability that breaks down, firm, safe, durable floating ball hydrophobic water valve open in usual.

The structure that the utility model adopts is: the suction tude connection is fixed on the air chamber of valve body lower portion and is being overlapped by the float on its top, the glue lid press seal inlet hole at float top, cross section piston top not of uniform size in two ends heads in filter screen and the spring housing suction chamber, air chamber is fixed on the bearing support of valve body bottom, vent plug is enclosed within piston base, utilizes under the spring push piston to drive vent plug and opens sewage draining exit discharging dirt.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is the utility model structure sectional view.

This drain valve is open in usual.By swivel nut 20 valve gap 1 and valve body 19 are connected to a fixed, filter screen 3 is fixed on the valve body internal upper part by screen holder 4.Suction tude 5 communicates with air chamber 15 inside that are positioned at valve body lower portion, and protrude upward, float 17 by its top is overlapping, the glue at float top covers the inlet hole on 18 press seal suction tude, 5 tops, piston 7 tops head in filter screen 16 and the spring 6 cover suction chambers 15, air chamber inside communicates with the external world by the aperture on the piston 7, vent plug 11 is enclosed within piston base, and it is fixing by nut 10, air chamber 15 usefulness screws 13 are fixed on the bearing support 8, and bearing support 8 (also claiming sewage draining exit) is fixed in valve body 19 bottoms by outer nut 9 again.Each corresponding site all seals with seal ring 2,12 and seal ring 14 in the valve, and reduction valve 21 is contained on the valve gap 1.It is not of uniform size that piston 7 is processed into the two ends cross-section area, can reach at same pressure gas to act on the effect that the piston two ends produce pressure difference.Spring 6 is contained in the air chamber, last top air chamber, and following top piston plays down push piston, makes piston drive the effect that vent plug is opened sewage draining exit (bearing support) discharging dirt.

Working principle of the present utility model is:

1, when no compressed gas passed through this valve, sewage draining exit was being opened naturally, and glue lid press seal inlet hole, communicates with the external world in the valve.At this moment, if having ponding and greasy dirt to flow to this valve in the air compressor system, then ponding and greasy dirt spontaneous current go out the external world.

2, when compressed gas passes through this valve, because glue lid press seal inlet hole, compressed gas can't enter air chamber inside, and it is low to form the air chamber air pressure inside.Again because piston upper and lower surface compression area unequal (up big and down small), form pressure difference, upward pressure greater than downward pressure, make piston lift length of spring compressed, piston drives the vent plug rising simultaneously, closes sewage draining exit, air pressure is big more, it is big more to upward pressure, and the formation sewage draining exit is closed tight more, and compressed gas can not be leaked outside.At this moment, isolated ponding and greasy dirt just deposit in this valve in the air compressor system, and promptly float drives glue and covers liter, the breakdown inlet hole, compressed gas enters in the air chamber, because of inlet hole greater than the aperture on the piston, compressed gas can not in time be discharged the external world and the air chamber internal air pressure is risen, cause piston pressure difference up and down to disappear, this moment, spring work pushed away under the piston, and piston drives vent plug and descends, open sewage draining exit, discharge ponding in the valve and greasy dirt extraneous automatically.After ponding and greasy dirt drained, the float band Jiao Gai and is descended, the press seal inlet hole, and the air chamber internal air pressure reduces immediately, so each parts repeats above-mentioned working procedure, goes round and begins again.

3, when compressed gas pressure suddenly or when fading away, decline along with air pressure, piston up and down two to pressure difference just more little, when pressure difference during less than the elastic force of spring, spring is about to push away under the piston, and piston drives vent plug and descends, and opens sewage draining exit, automatically residual ponding and the greasy dirt in the expulsion valve, and the working state when entering aforementioned no compressed gas by this valve.

This drain valve is open in usual, the no compressed gas that can solve the Normally closed type valve passes through, or air pressure suddenly and can not work when fading away, and causes residual ponding and greasy dirt not to discharge and makes the shortcoming of equipment corrosion damage and bursting by freezing, so it is the working life that can improve equipment, and user-friendly.This valve arrangement is simple, reasonable, can more help proper functioning in the assorted working environment that hard granule dirt arranged, reduced the probability that breaks down, increased Applicable scope, the ponding and the greasy dirt amount that rest on simultaneously in the valve are few, the waiting time is short, can effectively stop ponding to volatilize again and enter in the air-flow, helps the source of the gas drying.

Claims

1, a kind of floating ball hydrophobic water valve open in usual is connected to a fixed valve gap and valve body by swivel nut, and filter screen is fixed on the valve body internal upper part by screen holder, and corresponding site all has seal ring and seal ring to seal in the valve body, it is characterized in that; Suction tude 5 communicates with air chamber 15 inside that are positioned at valve body lower portion, and protrude upward, float 17 by its top is overlapping, the glue at float top covers the inlet hole on 18 press seal suction tude, 5 tops, and piston 7 tops head in filter screen 16 and the spring 6 cover suction chambers 15, and air chamber inside communicates with the external world by the aperture on the piston 7, vent plug 11 is enclosed within piston base, and fixing by nut 10, air chamber 15 usefulness screws 13 are fixed on the bearing support 8, and bearing support 8 is fixed in valve body 19 bottoms by outer nut 9 again.

2, a kind of floating ball hydrophobic water valve open in usual, it is characterized in that: it is not of uniform size that piston 7 is processed into the two ends cross-section area.