CN105627082A - Sliding-flap free-float type - Google Patents

Abstract

Provided is a sliding-flap free-float type. A left valve body and a right valve body are connected via a bolt. The left valve body, a filter screen and a choke plug are connected sequentially. The top of the left valve body is installed with an automatic emptying valve. A limiting device is fixed into a cavity of the left valve body. A floating ball, a shaft sleeve and a weighting block are fixedly connected and sleeve a valve shaft. The weighting block can be adjusted. A cotter pin, a plain washer, the valve shaft, a gland and the right valve body are sequentially connected. The side surface of the shaft sleeve is provided with a convex hole. The upper part is a waist-shaped hole and the lower part is a rectangular hole. A valve clack and a lower-part hole are in clearance fit. Two circular springs are utilized to press the valve clack on the external circumference of the shaft sleeve such that the valve clack and the valve shaft are closely attached. A shaft axis at the right end of the valve shaft is a blind hole. The side surface is provided with a waist-shaped hole. The axial shape and the size are the same as the upper part of the convex-shaped hole of the shaft sleeve. The shaft axis at the right end of the right valve body is provided with a blind hole. The connection between a left end surface and a central hole of the valve shaft is provided with an axial blind hole. The left end is covered by a radial through hole to the center. The outer side end is plugged and communicated with the axial blind hole and the central hole so that a Z-shaped conjugated passage is formed. In combination of condensation water buoyancy and the weighting block, the floating ball ascends or descends to rotate the shaft sleeve and control the passage to open and close. When condensation water flows out of the waist-shaped hole, no eddy occurs. Steam does not leak and energy is saved.

Description

Sliding flap floating ball hydrophobic water valve

Technical field

The present invention relates to a kind of sliding flap floating ball hydrophobic water valve can automatically got rid of and condense water and stop steam to leak.

Background technology

Steam delivery valve is to condense water the valve stoping steam to leak for automatic-discharging in various process steam equipment, heat exchanger, gas pipeline and heat tracing line. Free Float Type Steam Trap belongs to the drain valve of mechanical type, and it is by the ascending, descending condensing water SEA LEVEL VARIATION control ball float in valve body, thus driving a kind of drain valve of flap action.

One end that existing Free Float Type Steam Trap primitive form is lever is connected to ball float, flap is in the middle of lever, the lever other end is hinged with bearing, ball float rises and drives flap to open, condense water and flow out valve, ball float decline flap is closed and is stoped steam to flow out valve, it is called lever floating ball type draining valve commonly referred to as this drain valve, but there is following defect in the drain valve of this structure, flap and valve seat belong to the version of stop valve, flap valve point becomes inverted cone, valve seat orifice is blocked during closedown, when mentioning, then valve is opened, condense the water flow direction back side flow valves bore from flap, during closedown, the back side of flap can be subject to medium static pressure effect, valve point place leads in air, pressure is equal with atmospheric pressure, tow sides pressure is unequal, as opened valve, then must first overcome pressure medium, and flap, frictional force between sealing surface of seat, tripping force is that the buoyancy produced by ball float realizes, this power is relatively larger, so ball float volume will be sufficiently large, whole valve volume also to strain greatly mutually, not only valve cost improves, also larger space is taken during installation, additionally, condense when water flows out from valve seat circular port and produce eddy current, steam is caused to leak, also result in the waste of the energy.

Summary of the invention

In order to needed for overcoming existing lever floating ball type draining valve, tripping force is big, valve volume is big, and the defect of the steam leakage waste energy, the present invention provides a kind of sliding flap floating ball hydrophobic water valve, it is possible to reduces tripping force, reduces valve volume, eliminate eddy current, it is to avoid steam leaks simultaneously, save the energy.

The technical scheme is that: this sliding flap Free Float Type Steam Trap is by left valve barrel, drainage screen, plug, ball float, automatic drain valve, pad, bolt, right valve barrel, split pin, plain washer, valve shaft, axle sleeve, flap, balancing weight, gland, annulus spring stopper forms, left valve barrel, right valve barrel is connected with, and forms shell, left valve barrel, drainage screen, plug is sequentially connected with, and forms water inlet system, and automatic drain valve is installed at left valve barrel top, and stopping means is fixed on left valve barrel intracavity, ball float, axle sleeve, balancing weight is consolidated, and is enclosed within valve shaft, balancing weight scalable, split pin, plain washer, valve shaft, gland, right valve barrel is sequentially connected with, there is one " convex " shape hole axle sleeve side, the top in " convex " shape hole is mounting hole, bottom is rectangular opening, flap and rectangular opening is matched in clearance, and flap be press against by sleeve outer circle week with two annulus springs, flap and valve shaft is made to be close to, having a blind hole on valve shaft axial line, there are a mounting hole, axial shape in side, size is identical with the top in axle sleeve " convex " shape hole, right valve barrel right-hand member axial line has a blind hole, left side and valve shaft centre bore connecting place have an axial blind hole, and left end cap radially has a through hole to center, and outboard end blocks, with axial blind hole, centre bore all communicates, become the passage of and Z-shaped conjugation, collectively constitute condensed water passage with valve shaft centre bore and axle sleeve mounting hole, when the liquid level of valve pocket is low, ball float makes axle sleeve turn clockwise, when the lower edge on top, " convex " shape hole is higher than valve shaft side mounting hole upper limb, valve closing, after liquid level raises, ball float rises and makes axle sleeve rotate counterclockwise, when the lower edge on top, " convex " shape hole is lower than valve shaft mounting hole upper limb, channel connection, condense water and then can flow out from passage. the invention has the beneficial effects as follows, as long as owing to the action of open and close overcomes the force of sliding friction between axle sleeve and valve shaft to realize, and this tripping force is by buoyancy, plus balancing weight effect realize, valve for onesize latus rectum, with overcome on stop valve clack compared with medium static pressure and sealing surface frictional force sum, numerical value is only small, thus the volume of sliding flap floating ball hydrophobic water valve ball float is about the half of lever floating ball type draining valve ball float, the volume of drain valve is also much smaller than lever floating ball type draining valve volume, axle sleeve and valve shaft connector all adopt mounting hole, condense when water flows out and do not produce eddy current, it is to avoid the leakage of steam, have saved the energy.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention is further described.

Fig. 1 is the structure chart of the present invention.

Fig. 2 is the A-A view of the present invention.

Fig. 3 is valve shaft structure chart.

Fig. 4 is axle sleeve structure figure.

1. left valve barrel in figure, 2. drainage screen, 3. plug, 4. ball float, 5. automatic drain valve, 6. pad, 7. bolt, 8. right valve barrel, 9. split pin, 10. plain washer, 11. valve shafts, 12. axle sleeves, 13. flaps, 14. balancing weights, 15. glands, 16. annulus springs, 17. stopping means.

Detailed description of the invention

As shown in the figure, left valve barrel 1, right valve barrel 8 bolt 7 connects, composition shell, left valve barrel 1, drainage screen 2, plug 3 is sequentially connected with, automatic drain valve 5 is installed at left valve barrel 1 top, stopping means 17 is fixed on left valve barrel intracavity, ball float 4, axle sleeve 12, balancing weight 14 is consolidated, it is enclosed within valve shaft 11, balancing weight 14 scalable, split pin 9, plain washer 10, valve shaft 11, gland 15, right valve barrel 8 is sequentially connected with, " convex " shape hole is processed in axle sleeve 12 side, the top of " convex " shape is mounting hole, bottom is rectangular opening, it it is matched in clearance between flap 13 and rectangular opening, flap 13 be press against by axle sleeve 12 excircle with two annulus springs 16, flap 13 and valve shaft 11 is made to be close to, valve shaft 11 axial line there is a blind hole, there is a mounting hole side, axial shape, size is identical with the top in axle sleeve " convex " shape hole, right valve barrel 8 right-hand member axial line there is a blind hole, left side and valve shaft 11 centre bore connecting place have an axial blind hole, left end cap radially has a through hole to center, outboard end blocks, with axial blind hole, centre bore all communicates, become the passage of and Z-shaped conjugation, condensed water passage is collectively constituted with valve shaft 11 centre bore and axle sleeve mounting hole. when condensing water SEA LEVEL VARIATION, plus balancing weight effect, ball float 4 is along with rising or falling, during decline, ball float 4 declines, axle sleeve turns clockwise, when the lower edge on top, " convex " shape hole is higher than the mounting hole upper limb of valve shaft 11, channel jam, during rising, ball float 4 rises, and axle sleeve rotates counterclockwise, when the lower edge on top, " convex " shape hole is lower than valve shaft mounting hole upper limb, channel conductive, condenses water and is discharged outside valve, owing to not producing eddy current when mounting hole is got rid of and condensed water, the leakage of steam will not be produced, save the energy.

Claims (1)

1. sliding flap floating ball hydrophobic water valve, left valve barrel (1), right valve barrel (8) bolt (7) connects, left valve barrel (1), drainage screen (2), plug (3) is sequentially connected with, automatic drain valve (5) is installed at left valve barrel (1) top, it is characterized in that: ball float (4), axle sleeve (12), balancing weight (14) is consolidated, it is enclosed within valve shaft (11), balancing weight scalable, stopping means (17) is fixed on left valve barrel (1) intracavity, split pin (9), plain washer (10), valve shaft (11), gland (15), right valve barrel (8) is sequentially connected with, there is one " convex " shape hole axle sleeve (12) side, top is mounting hole, bottom is rectangular opening, flap (13) and lower rectangular hole are matched in clearance, flap (13) be press against by axle sleeve (12) excircle with two annulus springs (16), flap and valve shaft is made to be close to, valve shaft (11) right-hand member axial line there is a blind hole, there is a mounting hole side, axial shape, size is identical with the top in axle sleeve " convex " shape hole, right valve barrel (8) right-hand member axial line there is a blind hole, left side and valve shaft (11) centre bore connecting place have an axial blind hole, left end is stamped a radial direction through hole to center, outboard end blocks, with axial blind hole, centre bore all communicates, become the passage of and Z-shaped conjugation, condensed water passage is collectively constituted with valve shaft (11) centre bore and axle sleeve (12) mounting hole.