CN205896255U - Float and prevent particle ball valve - Google Patents

Abstract

The utility model relates to a can prevent the float and prevent particle ball valve of granule. This float and prevent particle ball valve is including valve body, valve ball and valve rod, its characterized in that: the entering end of valve body is connected with prevents the granule device, prevent that the granule device is including crossing filtering body and filter screen, it has deposition chamber in the filtering body to cross, deposition chamber communicates with each other through passageway and valve body, the filter screen is installed on the passageway, it is equipped with first flushing hole and first apopore on the filtering body to cross. This kind of float and prevent particle ball valve can clear away the grit that carries more thoroughly in the medium, be equipped with flushing hole and apopore on the device, can regularly utilize water under high pressure clearance filter screen to go out the hard particle emissions who stores up in the storage tank, guarantee the continuity that the device used.

Description

Float anti-granule ball valve

Technical field

This utility model is related to a kind of valve and in particular to a kind of anti-granule ball valve that floats.

Background technology

Valve ball is widely used in existing large automatic device, under the manipulation of Central Control Room dsc, to production technology stream Technological parameter in journey: pressure, flow, temperature, liquid level etc. implement distant control, meet the needs of modern production.

Ball valve is through-type runner, and stream is simple, and flow resistance is little, and capacity is big, thus has small volume, and lightweight, structure is tight Gather, be active in one's movements, switch is rapid, the features such as cutting function is strong, but when process conditions are more severe, be especially situated between in air-liquid When containing a small amount of suspension grit in matter, these foreign bodies enter valve pocket with medium, are easily stuck in the annular seal space of valve pocket and valve seat Between, damage sealing surface, lead to seal failure, leakage rate increases, or even the grit having enter valve rod guiding clearance so that Valve rod rotates difficulty, and corner (stroke) is not in place, or even major injury, destroys the guide surface of axle sleeve, and makes the function of valve Disappearance.

Content of the invention

In view of prior art exist deficiency, this utility model innovation provide a kind of can anti-granule floating anti-granule ball Valve.This floating anti-granule ball valve include valve body, valve ball and valve rod it is characterised in that: the upstream end of described valve body is connected with Anti- particle device, described anti-particle device includes filtering bodies and drainage screen, and described filtration has deposit cavity in vivo, described deposition Chamber is communicated with valve body by passage, and described drainage screen is arranged on passage, and described filtering bodies are provided with the first flushing hole and first Apopore.

Described passage forms bottleneck shape to deposit cavity.

Described valve body is provided with the second flushing hole and the second apopore, and described second flushing hole is against valve ball.

Described valve rod is provided with convex shoulder at valve ball, is cased with metal o-ring and seals with ppl outside the valve rod on described convex shoulder Circle, described metal o-ring is located at lower floor, and described ppl sealing ring is located at upper strata.

Float anti-granule ball valve according to one kind that this utility model provides, can more thoroughly remove carry in medium hard Granule, is provided with flushing hole and apopore on the apparatus, can periodically utilize water under high pressure to clear up drainage screen, and handle accumulates in storage tank In grit emit it is ensured that this device use continuity.

Brief description

Fig. 1 is structural representation of the present utility model.

Specific embodiment

As shown in figure 1, this floating anti-granule ball valve includes valve body 1, valve ball 3 and valve rod 2, in order in filter medium Granule foreign, this utility model is connected with anti-particle device in the upstream end of valve body 1, and this anti-particle device includes filtering bodies 4 With drainage screen 5, there is in filtering bodies 4 deposit cavity 40, deposit cavity 40 is communicated with valve body 1 by passage 41, and drainage screen 5 is just arranged on On this passage 41, the medium towards valve body 1 first passes around the filtration of drainage screen 5, forms bottleneck because passage 41 arrives deposit cavity 40 Shape, the granule foreign filtering down with regard to autodeposition in the deposit cavity 40 of filtering bodies 4, and heavy in deposit cavity 40 in order to clean Long-pending thing, is provided with the first flushing hole 42 and the first apopore 43, by the first flushing hole 42 and the first apopore in filtering bodies 4 43, can periodically utilize water under high pressure to clear up drainage screen 5, and emit accumulating in the grit in deposit cavity 40.

It is same that for purge valve ball 3, this utility model is provided with the second flushing hole 10 and the second apopore 11 on valve body 1, Certainly this second flushing hole 10 is against valve ball 3.By cleaning valve ball 3, the grit on valve ball 3 can be eliminated, prevent valve ball 3 from grinding Damage, extend the service life of ball valve.

In addition it is noted that in order to improve the sealing at valve rod 2, this utility model is in valve rod 2 at valve ball 3 It is provided with convex shoulder 21, be cased with metal o-ring 22 and ppl sealing ring 23 outside the valve rod 2 on convex shoulder 21, metal o-ring 22 is located at Lower floor, ppl sealing ring 23 is located at upper strata.This structure can avoid remaining grit to enter among valve rod 2 and the gap of guide pin bushing, keeps away Exempt from valve rod 2 to damage with guide pin bushing relative motion surface, it is to avoid the fault of valve rod 2 action occurs.

Claims (4)

1. float anti-granule ball valve, include valve body (1), valve ball (3) and valve rod (2) it is characterised in that: described valve body (1) Upstream end be connected with anti-particle device, described anti-particle device includes filtering bodies (4) and drainage screen (5), described filtering bodies (4) there is in deposit cavity (40), described deposit cavity (40) is communicated with valve body (1) by passage (41), described drainage screen (5) is installed On passage (41), described filtering bodies (4) are provided with the first flushing hole (42) and the first apopore (43).

2. according to claim 1 floating anti-granule ball valve it is characterised in that: described passage (41) arrive deposit cavity (40) shape Become bottleneck shape.

3. according to claim 1 and 2 floating anti-granule ball valve it is characterised in that: described valve body (1) is provided with the second punching Hole flushing (10) and the second apopore (11), described second flushing hole (10) is against valve ball (3).

4. the anti-granule ball valve of floating according to claim 1 and 2 it is characterised in that: described valve rod (2) is near valve ball (3) Place is provided with convex shoulder (21), is cased with metal o-ring (22) and ppl sealing ring (23), institute outside the valve rod (2) on described convex shoulder (21) State metal o-ring (22) and be located at lower floor, described ppl sealing ring (23) is located at upper strata.