CN201705981U

CN201705981U - High-temperature oil slurry V-shaped adjusting valve

Info

Publication number: CN201705981U
Application number: CN2010202922561U
Authority: CN
Inventors: 吴军
Original assignee: Yueyang Dongfang Automatic Control Engineering Equipment Co Ltd
Current assignee: Yueyang Dongfang Automatic Control Engineering Equipment Co Ltd
Priority date: 2010-08-16
Filing date: 2010-08-16
Publication date: 2011-01-12
Anticipated expiration: 2020-08-16

Abstract

The utility model relates to a high-temperature oil slurry V-shaped adjusting valve, comprising a valve body and a valve core V-shaped adjusting valve, wherein the valve body is separated into an upper valve body and a lower valve body; a ball-shaped valve core with a single-passage fixed structure is respectively arranged in the hollow cavities of the upper and lower valve cavities; the valve core is provided with a V-shaped flow quantity adjusting opening; the exterior of the valve core is appressed with a sealed valve seat; the valve core is also connected with an opening and closing shaft which is used for opening and closing the valve core; and the opening and closing shaft penetrates through the valve body and is arranged on both sides of the valve core. The density grade of the valve is high, and the leakage standard of the adjusting valve can be reached; most of inner components is made from special tungsten carbide, thereby greatly enhancing the flushing resistance, corrosion resistance and high temperature resistance properties of the valve, and integrating the advantages of the ball valve and the adjusting valve; the applicable medium of the valve is wide, the phenomena that the valve is blocked and the switch is not in position can be eliminated, and the service life can be prolonged to more than 200,000 times.

Description

High temperature slurry oil V-type modulating valve

Technical field

The utility model relates to valve, the high temperature slurry oil V-type modulating valve after particularly a kind of ball valve sealing improves.

Background technique

Modulating valve domestic and import is in use easy to wear at present, working life is not high, and in the rugged environment that contain the high temperature slurry oil, seal arrangement very easily damages, though and general modulating valve seal arrangement has certain wear-resisting, anti-scouring capability, its sealability is undesirable.

Summary of the invention

The purpose of this utility model be at the shortcoming that exists in the background technique and problem in addition novelty improve, provide a kind of simple in structure, cost is low, adapts to various particular job environment, high temperature slurry oil particularly, the high temperature slurry oil V-type modulating valve of the demanding working environment of sealability.

Technical solutions of the utility model are a kind of V-type modulating valve that comprise valve body and spool of structure, wherein:

Valve body is made as upper valve body and following valve body, the ball-type spool of single channel stationary structure is set in the cavity of upper and lower valve body, have a V-type Flow-rate adjustment mouth on the spool, the spool outside is close to and is provided with seal valve seat, spool also connects the opening-closing shaft of controlling its keying, and opening-closing shaft passes valve body and is arranged on the spool both sides;

Described seal valve seat comprises the valve seat that is located between spool runner mouth and the valve interior wall, is fixed on valve seat graphite circle, valve base sealing ring, pad and valve seat cover on the valve seat by the valve seat pressure cap, and is located at graphite annulus and planar spring between valve seat and the following valve body;

Described opening-closing shaft comprises rotating shaft and the back shaft that is arranged on the spool both sides, and rotating shaft pivot movable valve plug rotary opening and closing valve;

All be inlaid with the Tungsten carbite cover in the runner mouth of described valve seat, upper valve body and following valve body, spool and following body cavity all are coated with Tungsten carbite.

Advantage of the present utility model and beneficial effect:

The utility model can make valve density rating height can reach modulating valve and leak standard, inner piece adopts special tungsten carbide material mostly, the antiscour of valve, corrosion-resistant, heat-resisting quantity have been improved greatly, and the valve advantage of having assembled ball valve and adjusting, make valve Applicable media wide (as long as rational selection can be fit to most media), eliminate the stuck and switch phenomenon not in place of valve simultaneously, long service life can reach more than 20 ten thousand times.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

As shown in Figure 1, the utility model comprises valve body and spool, wherein:

Valve body is made as upper valve body 14 and following valve body 1, the ball-type spool 20 of single channel stationary structure is set in the cavity of upper and

lower valve body

14,1, have a V-type Flow-rate adjustment mouth on the spool 20, spool 20 outsides are close to and are provided with seal valve seat, spool 20 also connects the opening-closing shaft of controlling its keying, and opening-closing shaft passes valve body and is arranged on spool 20 both sides;

Described seal valve seat comprises the valve seat 4 that is located between spool 20 runner mouths and the valve interior wall, the valve seat graphite circle 21, valve base sealing ring 22, pad 23 and the valve seat that are fixed on the valve seat 4 by valve seat pressure cap 7 overlap 24, and are located at graphite annulus 5 and planar spring 6 between valve seat 4 and the following valve body 1;

Described opening-closing shaft comprises rotating shaft 11 and the back shaft 16 that is arranged on spool 20 both sides, and rotating shaft 11 pivot movable valve plugs 20 rotary opening and closing valves;

All be inlaid with the Tungsten carbite cover in the runner mouth of described valve seat 4, upper valve body 14 and following valve body 1, spool 20 and following valve body 1 inner chamber all are coated with Tungsten carbite.

Rotating shaft 11 described in the utility model is arranged between spool 20 1 sides, upper valve body 14 and the following valve body 1 by gland 12, and connects with bolt; Also be provided with axle sleeve 8, rotating shaft cushion block 9 and carbon seal ring 10 between rotating shaft 11 and the upper and lower valve body 14,1.Described back shaft 16 is arranged on the opposite side of spool 20, and fuses with upper and

lower valve body

14,1, and also be provided with cover plate graphite circle 17 between cover plate 19 and the upper and

lower valve body

14,1 by cover plate 19, sealing gasket 18.Described upper valve body 14 and following valve body 1 inwall all are provided with lining 3, also are provided with pressing plate 2 between lining 3 outer ends and the valve body.

Working principle of the present utility model:

Hard seal combination seal valve seat of the present utility model is under the effect of medium, make hard seal valve seat be close on the spool and the automatic capturing centre of sphere, this moment, hard seal valve seat was subjected to the effect of two power: the annulus area of the hard seal valve seat of pressure * of the pressure F=medium of 1 medium.The pretightening force Q(of 2 elastic sealing strips is fixed by design).These two power are formed sealing force (surface friction drag of having ignored some Sealings) valve seat and the valve seat cover that seal between hard seal valve seat and the spool and are guaranteed sealing by graphite pads.Stack valve seat realizes under the effect of the pressure of medium and elastic sealing strip pretightening force and the sealing of spool when valve closing.The high temperature slurry oil is high temperature and has the dregs of fat, common hard black box is difficult to reach requirement, for guaranteeing the leakage rate of valve, guarantee that the spool valve seat is not washed away, therefore inlayed special cemented carbide at upper valve body and following valve flowing channel mouth inboard, sprayed one deck Tungsten carbite at spool and valve insertion surface.

The utility model spool is the single channel stationary structure, opens a V-type Flow-rate adjustment mouth on spool, and the size of flow can change according to the size of V-type opening.And adopting 304 and surface spraying and have antiscour, corrosion-resistant, resistant to elevated temperatures special Tungsten carbite to form, thickness reaches 1-2mm.An end, spool that the utility model seal valve seat is symmetricly set in upper valve body and the following valve body are located at down valve body, by initial tension of spring and pressure medium valve seat and spool are fitted.

Embodiment described in the utility model only is the description that preferred implementation of the present utility model is carried out; be not that the utility model design and scope are limited; under the prerequisite that does not break away from the utility model design philosophy; engineers and technicians make the technical solution of the utility model in related domain various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.

Claims

1. a high temperature slurry oil V-type modulating valve comprises valve body and spool, it is characterized in that:

Valve body is made as upper valve body (14) and following valve body (1), the ball-type spool (20) of single channel stationary structure is set in the cavity of upper and lower valve body (14,1), have a V-type Flow-rate adjustment mouth on the spool (20), spool (20) outside is close to and is provided with seal valve seat, spool (20) also connects the opening-closing shaft of controlling its keying, and opening-closing shaft passes valve body and is arranged on spool (20) both sides;

Described seal valve seat comprises the valve seat (4) that is located between spool (20) runner mouth and the valve interior wall, be fixed on valve seat graphite circle (21), valve base sealing ring (22), pad (23) and valve seat cover (24) on the valve seat (4) by valve seat pressure cap (7), and be located at graphite annulus (5) and planar spring (6) between valve seat (4) and the following valve body (1);

Described opening-closing shaft comprises rotating shaft (11) and the back shaft (16) that is arranged on spool (20) both sides, and rotating shaft (11) pivot movable valve plug (20) rotary opening and closing valve;

All be inlaid with the Tungsten carbite cover in the runner mouth of described valve seat (4), upper valve body (14) and following valve body (1), spool (20) and following valve body (1) inner chamber all are coated with Tungsten carbite.

2. high temperature slurry oil V-type modulating valve according to claim 1 is characterized in that described rotating shaft (11) is arranged between spool (20) one sides, upper valve body (14) and the following valve body (1) by gland (12), and connects with bolt; Also be provided with axle sleeve (8), rotating shaft cushion block (9) and carbon seal ring (10) between rotating shaft (11) and the upper and lower valve body (14,1).

3. high temperature slurry oil V-type modulating valve according to claim 1, it is characterized in that described back shaft (16) is arranged on the opposite side of spool (20), and fuse, and also be provided with cover plate graphite circle (17) between cover plate (19) and the upper and lower valve body (14,1) by cover plate (19), sealing gasket (18) and upper and lower valve body (14,1).

4. high temperature slurry oil V-type modulating valve according to claim 1 is characterized in that described upper valve body (14) and following valve body (1) inwall all are provided with lining (3), also are provided with pressing plate (2) between lining (3) outer end and the valve body.