CN87209999U - Free floating water drain valve - Google Patents

Abstract

The utility model relates to a steam-blocking water-draining valve which is necessary to be used for the heat exchange equipment and the steam pipe net of the heating system. The three new technologies of the sealing component of high sealing specific pressure, the mechanical component of non-condensed steam discharging and the inverted valve component of flow regulating are adopted to obtain a new water draining valve with low steam leaking rate and long service life. A series of problems existing on the prior water draining valve are solved and one valve can automatically form the serialization. The utility model has the advantages of simple and compact structure and small size and high precision and the repair and component changing are not needed in the working period better than the steam leaking rate and service life index provided by the authority department.

Description

Free floating water drain valve

The utility model is the choke drain valve that heat transmission equipment in the heating system, steam pipe system must use.

As everyone knows, existing drain valve life-span short, leak vapour rate height be current as yet not the garden completely solve ask Gu.Chinese patent " CN86204258 three rest Ball float steam traps " is owing to adopted three points location, improved Location accuracy, obtained progress aspect addressing the above problem, but still had deficiency: it is very little directly to seal its seal pressure by ball float, leaks the vapour rate and is difficult to further reduction; The machining accuracy of ball float is very big to leaking the influence of vapour rate, thereby requirement on machining accuracy is very high, and valve to chew be a wear-out part; Because its working principle is limit, and can only produce float amount drain valve at present; Arrange noncondensing gas poor performance, because bimetallic element is only relevant with temperature.

The purpose of this utility model is to provide a kind of to be had a mechanical type and arranges noncondensing pneumatic module, a double spool black box and low leakage vapour rate, the long lifetime drain valve that Flow-rate adjustment, check valve assembly constitute, and realizes that a valve has seriation of one's own.

Solution of the present utility model is: be provided with mechanical type and arrange noncondensing pneumatic module in valve, to improve the noncondensing gas performance of row.Eccentric side at following valve body (1) is provided with the double spool black box.It is relevant that can the switching of this assembly valve opening and the chamber at little spherical surface body place, small valve core (18) bottom form low pressure area.When float (8) is pressed on lever (22) and adds the effect of internal pressure, this moment, valve opening was in closed condition.After float (8) left lever (22), small valve core (18) rose by the effect of little spring (19) expansion force, and the bottom loculus has become low pressure area, and under differential pressure action, valve opening is opened.Because this assembly has the advantage that opening force is little, seal pressure is high, created condition for the big discharge capacity drain valve of design.This assembly is arranged on down valve body (1) and locates, and makes it whenever all have a metastable water seal layer (dashed line shown in Figure 1) to exist when work and stops steam leakage.Below valve opening, be provided with Flow-rate adjustment check valve assembly.By the adjusting of Screw (3) to spool (4), change the actual internal area of valve opening, thereby reached the purpose of regulating the size of water displacement, realized that a valve has seriation of one's own.Current will hold up spool (4) and seal valve opening when reverse water attack occurs.

The utility model is compared with three rest Ball float steam traps has following advantage: leak vapour rate and index of aging and be better than three rest Ball float steam traps.Can satisfy the requirement of big hydrophobic amount.Realized that a valve has seriation of one's own after introducing the Flow-rate adjustment technology, also had the function of check valve and the performance of anti-reverse water attack simultaneously.Arrange noncondensing gas function admirable, good to the adaptability of different system.As discharge means is changed into little neglected loading put also can be used for weaving, printing and dyeing and paper industry drying roller hydrophobic.Do not keep in repair in a long time and change part.Have compact structure, little, the no high-precision processing part of volume and low cost and other advantages in addition.

Fig. 1 is the utility model positive view.

Fig. 2 is a double spool black box positive view.

Description of drawings and embodiment:

There is a mechanical type to arrange noncondensing pneumatic module in the valve.Steel ball (9) and tingle (11) are packed in the exhaust body (10), and the opening that the bending major part is made makes it spacing, the aperture secure fit of polished rod section and valve inner top, and the little horizontal through hole of termination exposes external.Retaining watt (7) by two two flange and identical two to a synthetic garden tube, and by some supporting points of one are spacing fixing with it in the upper valve body (12).Hollow sealing float (8) is loaded in the synthetic garden tube of retaining watt (7), and it can be moved up and down.The polished rod section of the connecting sleeve (2) of Flow-rate adjustment check valve assembly is pressed into hole, the following eccentric garden of following valve body (1) and cooperates, and Screw (3) can be regulated spool (4) below.Several uniform water inlets were arranged on the valve seat of double spool black box (13) garden, middle and lower part week, it on it cavity, small valve core (18) is packed into earlier in the pilot hole of valve pocket (20), and seal ring (14), spring (16), main valve plug (15), sealing gasket (17) and valve pocket (20) are packed in the cavity of valve seat (13) more successively.Wherein seal ring (14) and big slightly hole secure fit above the horn mouth, spring (16) is between the end face of main valve plug (15) step surface and valve seat (13) cavity, the outer little garden cylinder of valve pocket (20) and main valve plug (15) internal diameter are movingly, outer big garden cylinder is pressed into the last internal orifice of valve seat (13) and cooperates, and the polished rod section of the pilot hole at its center and small valve core (18) is slidingly matched.Be enclosed within little spring (19) on the small valve core (18) and be contained in valve pocket (20) and the coaxial top big slightly hole, garden of pilot hole, its two ends are supported on respectively on the end face of the step surface in hole, garden and nut sheet (21).Lever (22) is made with steel wire, and is hinged with the support of the inclined to one side side in valve pocket (20) top.Valve pocket (13) bottom is pressed into hole, the top eccentric garden of following valve body (1) and cooperates.Following valve body (1) has an eccentric garden groove, and in net tube (5) the one end insertion grooves, the claw of the other end and square (6) matches, and pawl is flat outward to be stretched partly spacingly to net tin (5), and square (6) has the flange endoporus, matches with the upper end of valve seat (13).Be cast with some supporting points on upper valve body (12) internal chamber wall, be cast with some connection screws in the end opening.The groove of following valve body (1) on it designs for weight reduction, is cast with supporting leg down, and valve body is connected as a single entity with bolt up and down.

Claims (1)

1. A kind of free float type drain valve, comprise a upper valve body (12) and a following valve body (1), it is characterized in that: a mechanical type is housed on the upper valve body (12) arranges noncondensing pneumatic module, in the exhaust body (10) of assembly steel ball (9) is housed, its outer tingle (11) that is equipped with, the opening that the bending major part is made makes it spacing, retaining watt (7) by two two flange and identical two to a synthetic garden tube, and by some supporting points of one are spacing fixing with it in the upper valve body (12), the hollow seal float (8) that can move up and down, be contained in the synthetic garden tube of retaining watt (7), the double spool black box is contained in down on the valve body (1), valve seat (13) is the Cylinder of size about in the of, one horn mouth is arranged in the microcephaly, one big slightly hole is arranged on it, with seal ring (14) secure fit, there are several uniform apertures in garden, major part middle and lower part on week, one cavity is arranged in the major part, in main valve plug (15) is housed, also a cavity in this part, sealing gasket (17) concora crush is gone at the bottom of the chamber, there is an aperture to communicate on it with the bottom, step is arranged outside the main valve plug (15), between the end face of step surface and valve seat (13) cavity spring (16) is housed, valve pocket (20) outside is a step garden cylinder, big garden cylinder is pressed into valve seat (13) upper end internal orifice and cooperates, little garden cylinder and main valve plug (15) inner chamber movingly, valve pocket (20) center has the pilot hole of small valve core (18), small valve core (18) bottom is a sphere, the centre is a polished rod, top is screw thread, the polished rod of small valve core (18) partly is slidingly matched with pilot hole, screw thread partly is equipped with nut sheet (21), valve pocket (20) upper and lower has diameter greater than pilot hole and coaxial with it hole, garden, the little spring (19) that is enclosed within on the small valve core (18) is contained in the hole, garden on top, its two ends are supported on respectively on the end face of the step surface in hole, garden and nut sheet (21), support is equipped with at the top of valve pocket (a 20) relatively side, the shank of lever (22) contacts with the float (8) on its top, following valve body (1) has hole, an eccentric garden, valve seat (13) matches with it, net tube (5) one ends insert the eccentric garden groove of valve body (1) down, the claw of the other end and square (6) matches, the flat outward part of stretching of pawl is spacing to net tube (5), square (6) has the flange endoporus, match with the upper end of valve seat (13), connecting sleeve (2) is contained in down in the small garden hole of valve body (1) eccentric opening bottom, the inside of connecting sleeve (2) has aperture garden cylinder, cooperate with spool (4), spool (4) top is corresponding with valve seat (13) lower hole, the bottom of aperture garden cylinder is a screw, is equipped with to regulate Screw (3).

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