CN1264002A

CN1264002A - Microforce controlled valve

Info

Publication number: CN1264002A
Application number: CN 00110174
Authority: CN
Inventors: 李研经
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-01
Filing date: 2000-03-01
Publication date: 2000-08-23

Abstract

The present invention relates to a movable valve core that is a diameter-changeable pipe with thick and thin segments connected by a conic tube. The left end of partition has a conic surface matched with the inner surface of said conic tube. On the inner surface of the thick segment of movable valve core there is a wider ring slot to form a cavity to the static valve core at right side of partition. A flange of movable valve core is installed at tone end and a running driver is installed to another end. The sequence of external diameters from bigger to smaller is partition, left end and right end of static valve core.

Description

Micro-force control valve

The present invention relates to a kind of valve, particularly a kind of micro-force control valve.

The valve that uses has gate valve, stop valve, blowdown valve etc. at present.The common trait of its structure is that closure member moves along pipeline central vertical direction, realizes the switch of valve.The valve of this structure has following problem: the one, when valve in big latus rectum and higher following time of working pressure condition, all to install machinery, hydraulic pressure or power driving mechanism, otherwise be not easy switch.Owing to increased driving device, made the cost of valve improve tens times.The 2nd, existing valve is easy to wear, leakage, life-span short.Phenomenon is emitted, drips, leaked in the race of existing valve is ubiquitous problem.Not only wasted valuable fluid but also polluted the manufacturing operation environment aborning, even be detrimental to health and life.If in chemical industry and pharmaceuticals industry, leakage will have a strong impact on quality of product, causes unnecessary loss and waste sometimes.The 3rd, existing valve is closed or from being closed to unlatching from being opened to, all need a period of time, because existence during this period of time, if will have valve now is used on the fluid metering, can make accurate measurement, on oil jetty big pipe road, the oil that will be in vain flow away 1,000,000 tons of meters every year in during this period of time causes the tremendous economic loss to country.The 4th, when existing valve is used as the blowdown valve use, do not accomplish snap switch, do not meet the boiler blow-off characteristics.

The object of the present invention is to provide a kind of micro-force control valve, under big latus rectum and higher working pressure condition, needn't increase any type of driving mechanism, manually-operable both can realize switch of the present invention, and can accomplish snap switch, can also use as full-automatic water valve.

The object of the present invention is achieved like this: the present invention is a kind of micro-force control valve, it is by fixed valve plug, movable valve plug, the inlet connecting body constitutes, movable valve plug is sleeved on the fixed valve plug, the movable valve plug two ends all are installed with the O RunddichtringO, fixed valve plug is a round tube shape, the body inner route clapboard is separated into two-part, dividing plate cooperates with the inwall of fixed valve plug pipe is fixedly connected, have a plurality of through holes on the fixed valve plug at dividing plate two ends, movable valve plug is one section thin one section thick reducer pipe, thick section with carefully hold between be connected by a conical pipe, the dividing plate left end has the conical surface that matches with movable valve plug conical pipe inwall, movable valve plug butt end internal diameter has a broad annular groove, form cavity between it and the dividing plate right-hand member fixed valve plug, moving fixed valve plug one end is installed with the movable valve plug flange, and the other end is installed with a walking advancing means, external diameter on the fixed valve plug dividing plate and fixed valve plug left end, it is poor that the external diameter of right-hand member forms the footpath respectively, and external diameter ordering from big to small is: fixed valve plug dividing plate external diameter, fixed valve plug left end external diameter, fixed valve plug right-hand member external diameter.

The present invention is owing to designed movable valve plug and fixed valve plug, the fixed valve plug fluid output is a through hole between the inside and outside tube wall of fixed valve plug pipe, between movable valve plug thick section internal diameter broad annular groove and fixed valve plug, form cavity, making fluid have only through the fixed valve plug through hole flows out, inject cavity, fluid in cavity has produced a locomotivity to movable valve plug, this locomotivity can design selected, so no matter how hydrodynamic pressure and valve latus rectum size change, the switching manipulation power of this valve can be designed to any rational state, makes the contact stress of sealing surface of movable valve plug and fixed valve plug be designed to rational state.Working principle of the present invention is: when valve is in closed condition, owing to exist the cross section poor between fixed valve plug dividing plate external diameter and the fixed valve plug right-hand member external diameter, the annular cavity right section that causes the sealing that fixed valve plug and movable valve plug form is greater than left cross section, there is the power of closing that moves right in movable valve plug, and makes valve have a trend of closing forever.When valve is in open mode, owing to exist a cross section poor between fixed valve plug left end external diameter and the fixed valve plug right-hand member external diameter, the annular cavity right section that causes the sealing that fixed valve plug and movable valve plug form is greater than left cross section, still there is the power of closing that moves right in movable valve plug, and makes valve have a trend of closing forever.Movable valve plug moves, valve open, and the present invention has just realized the purpose of little power switch valve, can also adjust movable valve plug thin segment internal diameter size, can select the most rational switching manipulation power, has both accomplished that switch is light, easy, closes tightly and does not leak.The present invention that Here it is distinguishes the key feature of other any valve.

Fig. 1 does cut-away view for the embodiment of the invention 1 structure

Fig. 2 does cut-away view for the embodiment of the invention 2 structures

Below in conjunction with drawings and Examples the present invention is made into detailed description.

Embodiment 1:

The present invention as described in Figure 1 is a kind of micro-force control valve, it is by fixed valve plug 1, movable valve plug 2, the inlet connecting body constitutes, movable valve plug 2 is sleeved on the fixed valve plug 1, movable valve plug 2 two ends all are installed with the O RunddichtringO, fixed valve plug is a round tube shape, body inner route clapboard 4 is separated into two-part, the fixedly connected cooperation of inwall of dividing plate 4 and fixed valve plug 1 pipe, have a plurality of through holes 5 on the fixed valve plug at dividing plate 4 two ends, the fixed valve plug flange that the inlet connecting body is installed for the fixed valve plug two ends, movable valve plug 2 is one section thin one section thick reducer pipe, thick section with carefully hold between be connected by a conical pipe, dividing plate 4 left ends have the conical surface 6 that matches with movable valve plug conical pipe inwall, movable valve plug 2 butt end internal diameters have a broad annular groove, form cavity 7 between it and the dividing plate right-hand member fixed valve plug, moving fixed valve plug one end is installed with movable valve plug flange 8, the other end is installed with a walking advancing means, external diameter 9 and fixed valve plug left end on the fixed valve plug dividing plate, it is poor that the external diameter of right-hand member forms the footpath respectively, and external diameter ordering from big to small is: fixed valve plug dividing plate external diameter 9, fixed valve plug left end external diameter 10, fixed valve plug right-hand member external diameter 11.Described walking advancing means is: right-hand member has outside thread on the movable valve plug 2, is being equipped with nut 12 on it, and the other end of nut and the welding of the flange on the fixed valve plug are fixing.

Embodiment 2:

The utility model as shown in Figure 2, movable valve plug 2 left sides are spirality, and it is that the connecting tube 13 of same-handed shape matches with the right side, and connecting tube 13 is the inlet connecting body, and it is sleeved on the fixed valve plug left end, and connecting tube has outside thread and internal thread.Other structure of present embodiment is identical with embodiment 1, no longer repeats here.

Claims

1, a kind of micro-force control valve, it is characterized in that: it is by fixed valve plug (1), movable valve plug (2), the inlet connecting body constitutes, movable valve plug (2) is sleeved on the fixed valve plug (1), movable valve plug (2) two ends all are installed with the O RunddichtringO, fixed valve plug is a round tube shape, body inner route clapboard (4) is separated into two-part, the fixedly connected cooperation of inwall of dividing plate (4) and fixed valve plug (1) pipe, have a plurality of through holes (5) on the fixed valve plug at dividing plate (4) two ends, it is characterized in that: movable valve plug (2) is one section thin one section thick reducer pipe, thick section with carefully hold between be connected by a conical pipe, dividing plate (4) left end has the conical surface (6) that matches with movable valve plug conical pipe inwall, movable valve plug (2) butt end internal diameter has a broad annular groove, form cavity (7) between it and the dividing plate right-hand member fixed valve plug, moving fixed valve plug one end is installed with movable valve plug flange (8), the other end is installed with a walking advancing means, external diameter on the fixed valve plug dividing plate (9) and fixed valve plug left end, it is poor that the external diameter of right-hand member forms the footpath respectively, and external diameter ordering from big to small is: fixed valve plug dividing plate external diameter (9), fixed valve plug left end external diameter (10), fixed valve plug right-hand member external diameter (11)

2, a kind of micro-force control valve according to claim 1, it is characterized in that: described walking advancing means is: movable valve plug (2) is gone up right-hand member and is had outside thread, be equipped with nut (12) on it, the other end of nut and the welding of the flange on the fixed valve plug are fixing, the fixed valve plug flange that the inlet connecting body is installed for the fixed valve plug two ends.

3, a kind of micro-force control valve according to claim 1, it is characterized in that: movable valve plug (2) left side is a spirality, it is that the connecting tube (13) of same-handed shape matches with the right side, and connecting tube (13) is sleeved on the fixed valve plug left end, and connecting tube has outside thread and internal thread.