CN209511174U - A kind of harsh operating condition eccentric rotary valve that surges of solid-liquid two-phase - Google Patents

Abstract

The utility model discloses a kind of harsh operating condition eccentric rotary valves that surges of solid-liquid two-phase, are related to a kind of rotary valve technical field, and technical points include valve body, upper valve rod, plug screw and executing agency, and medium runner is equipped in valve body, is equipped with sphere in medium runner；Upper valve rod one end extends in medium runner and is linked with sphere, and the other end extends to outside valve body；Lower valve rod is also rotatably connected on the valve body of the lower end of sphere, valve seat is equipped in medium runner, valve seat is mounted in a wing passage of valve body, sphere is equipped with spherical crown, spherical crown is equipped with sealing surface, graphite-seal ring is equipped between valve seat and valve body, valve seat is equipped with locking nut and holding screw on the side far from sphere；When valve is closed, sealed set between the sealing surface on valve base inner wall and spherical crown.The utility model reduces the probability that medium passes through, while graphite-seal ring itself has good corrosion-resistant, acid and alkali-resistance and wear resistance, further improves sealing performance between valve seat and valve body.

Description

A kind of harsh operating condition eccentric rotary valve that surges of solid-liquid two-phase

Technical field

The utility model relates to a kind of rotary valve technical fields, more specifically, it relates to a kind of harsh work of solid-liquid two-phase The condition eccentric rotary valve that surges.

Background technique

As commercial plant parameter improves, long-term operation requires to improve, and solid liquid media transfer pipeline is to valve More stringent requirements are proposed for performance.In high temperature, High Pressure Difference, high abrasion, deep-etching, the blending agent operating condition for having zero leakage requirement, There are the various problems such as leakage, stuck, erosive wear, corrosion in the military service performance of valve.

Current existing rotary valve includes valve body, upper valve rod, medium runner is equipped in valve body, is equipped in medium runner Sphere；Upper valve rod one end extends in medium runner and is linked with sphere, and the other end extends to outside valve body；It is located at ball on valve body The lower end of body is additionally provided with lower valve rod, is equipped with valve seat in medium runner；Sphere is equipped with spherical crown, and spherical crown is equipped with sealing surface, valve seat The sealed set between the sealing surface on spherical crown.

But existing sphere is integrally formed, and requires sealed set between the sealing surface on valve seat and sphere, i.e. valve at this time Connection type between seat and the spherical crown sealing surface of sphere is interference fit, that is to say, that sphere is in the central axes around upper valve rod When rotation, the spherical crown sealing surface of sphere can generate certain extruding force to valve base inner wall, simultaneously because valve seat is located at medium runner Interior, above-mentioned extruding force will push valve seat and certain displacement occur on medium biology flow direction, certainly will will affect valve body at this time The sealing performance connected between valve seat, it is therefore desirable to propose the new technical solution of one kind to solve the above problems.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of harsh operating conditions of solid-liquid two-phase to use Surge eccentric rotary valve, reduces the probability that medium passes through, while graphite-seal ring itself has good corrosion-resistant, acid and alkali-resistance And wear resistance, further improve sealing performance between valve seat and valve body.

To achieve the above object, the utility model provides following technical solution: a kind of harsh operating condition liquid of solid-liquid two-phase Dynamic eccentric rotary valve includes valve body, upper valve rod, plug screw and executing agency, medium runner is equipped in valve body, is set in medium runner There is sphere；Upper valve rod one end extends in medium runner and is linked with sphere, and the other end extends to outside valve body；Positioned at sphere It is also rotatably connected to lower valve rod on the valve body of lower end, valve seat is equipped in medium runner, the side that the valve seat is mounted on valve body is logical In road, sphere is equipped with spherical crown, and spherical crown is equipped with sealing surface, is equipped in the gap between the valve seat and valve body several for close The graphite-seal ring of envelope, the valve seat are equipped with locking nut and the tightening for locking locking nut on the side far from sphere Screw；When valve is closed, sealed set between the sealing surface on valve base inner wall and spherical crown.

By using above-mentioned technical proposal, graphite-seal ring is filled in the gap between valve seat and valve body, and using lock Tight nut and holding screw are fixed, and the setting of graphite-seal ring reduces the probability that medium passes through at this time, improves valve seat and valve Sealing performance between body；Graphite-seal ring itself has good corrosion-resistant, acid and alkali-resistance and a wear resistance simultaneously, therefore Brought friction will not influence sealing performance between valve seat and valve body when driving sphere rotation is to open and close valve.

The utility model is further arranged to: being successively arranged filler from the bottom up in the upper valve rod aperture on the valve body top It pads, filler, the filler pressing sleeve, hold-down grid and bolt for upper stem seal is successively arranged above the filler.

By using above-mentioned technical proposal, by Packing seat, filler be sequentially placed into upper valve rod aperture be inscribed again by filler pressing sleeve, The conjunction of hold-down grid lid is compressed on filler, while can reach airtight and watertight padding and the effect of upper valve rod after being fixed by bolts, It is very convenient.

The utility model is further arranged to: pressure is equipped between the lower valve rod aperture inner wall of the valve body and the plug screw outer wall Tight gasket.

By using above-mentioned technical proposal, compress gasket is placed between lower valve rod inner wall and plug screw outer wall, thus, it is possible to Enough improve the airtight performance between lower valve rod inner wall and plug screw.

The utility model is further arranged to: the lower valve rod, upper valve rod pass through the both ends that spline is connected to sphere respectively.

By using above-mentioned technical proposal, sphere is connect by spline with upper valve rod and lower valve rod, is realized to the tight of sphere Lattice positioning, can drive sphere rotation when to open and close valve when it is more accurate, thus can further poppet sealing Performance.

The utility model is further arranged to: being equipped in the lower valve rod aperture of the valve body lower portion and is used for guide-localization lower valve rod Guide sleeve one, the guide sleeve two for guide-localization upper valve rod is equipped in the upper valve rod aperture on the valve body top.

By using above-mentioned technical proposal, upper valve rod is positioned by guide sleeve two, and the lower valve rod is carried out by guide sleeve one Positioning, the accuracy that can not only be positioned at this time to upper valve rod and lower valve rod, accuracy when valve is opened and closed to improve；And it leads It is equipped with to set one and compress gasket, can be improved the sealing performance between plug screw and lower valve rod aperture inner wall, while guide sleeve Two are equipped with Packing seat, filler, filler pressing sleeve and hold-down grid, can be improved between the dry inner wall of upper valve and upper valve rod Leakproofness.

The utility model is further arranged to: the executing agency is hydraulic double-acting driving device.

By using above-mentioned technical proposal, valve opening or closing are driven using double-action hydraulic executing agency, execute machine Structure High power output and compact-sized, so that valve operation performance is more preferably.

The utility model is further arranged to: the piston rod of the hydraulic double-acting driving device is equipped with worm screw, described The worm gear that upper valve rod is equipped in one end close to hydraulic double-acting driving device, the worm gear and worm screw intermeshing are arranged, institute The upper end of the lower end and upper valve rod of stating worm gear is connected by flat key.

By using above-mentioned technical proposal, the piston rod horizontal sliding of hydraulic double-acting driving device can push worm screw water It puts down toward polyslip, worm screw sliding at this time drives worm gear to rotate forward or backwards around the central axes of upper valve rod, then passes through spline Sphere rotation is driven, at this time i.e. retractable above-mentioned valve, thus using worm and gear positioning folding, so that the opening and closing of valve is more Precisely and sealing performance is higher.

The utility model is further arranged to: the valve body is equipped with bracket, and the bracket is bolted on valve body Close to the side of executing agency, the executing agency is rack-mount.

By using above-mentioned technical proposal, bracket stable is mounted at the upper outer wall of valve body, is facilitated to hydraulic double cropping With the installation of driving device, the stability that phase selection between worm and gear is mutually engaged is improved.

The utility model is further arranged to: the lower valve rod is rotatably connected in the lower valve rod aperture of valve body, the plug screw Rotation is located at the lower valve rod aperture of valve body, and the end of plug screw and lower valve rod is inconsistent.

By using above-mentioned technical proposal, lower valve rod aperture inner wall, lower valve rod, compress gasket and the plug screw of valve body are improved Between sealing performance.

The utility model is further arranged to: the inner wall of the valve seat is coated with hard alloy coating, the locking nut Inner wall be coated with hard alloy coating.

By using above-mentioned technical proposal, the hard alloy coating of the inner wall cladding of valve seat can make the inside of valve seat Structure is more resistant to erosion.And the hard alloy coating of the inner wall cladding of locking nut, locking nut position can be made more resistant to erosion.

In conclusion the utility model has the following beneficial effects:

1, the utility model reduces the probability that medium passes through, at the same graphite-seal ring itself have it is good it is corrosion-resistant, Acid and alkali-resistance and wear resistance further improve sealing performance between valve seat and valve body；

2, optimize, replaced using hydraulic double-acting driving device, it is big and compact-sized with actuator stem force, So that valve operation performance more preferably the advantages of；

3, optimize, the internal structure that the setting of hard alloy coating can be improved valve seat helps to extend more resistant to erosion The service life of valve.

Detailed description of the invention

Fig. 1 is a kind of perspective view of the harsh operating condition of the solid-liquid two-phase eccentric rotary valve that surges；

Fig. 2 is a kind of harsh operating condition of solid-liquid two-phase shell of the eccentric rotary valve in removal worm and wormwheel that surge, Yi Jifa Perspective view after body is mainly used for embodying the piston rod of hydraulic double-acting driving device, worm screw, the relative position between worm gear are closed System；

Fig. 3 is a kind of structural schematic diagram of the harsh operating condition of the solid-liquid two-phase eccentric rotary valve that surges；

Fig. 4 is a kind of solid-liquid two-phase harsh operating condition partial structural diagram for the eccentric rotary valve that surges, and is mainly used for body Existing relative position and connection between valve body, valve seat, locking nut, upper valve rod, lower valve rod, holding screw and graphite-seal ring Relationship.

Detailed description of the invention: 1, plug screw；2, compress gasket；3, valve body；4, guide sleeve one；5, lower valve rod；6, sphere；7, valve seat； 8, locking nut；9, holding screw；10, graphite-seal ring；11, upper valve rod；12, guide sleeve two；13, Packing seat；14, filler； 15, filler pressing sleeve；16, hold-down grid；17, bracket；18, hydraulic double-acting driving device；19, flat key；20, worm screw；21, snail Wheel；22, sealing surface.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Wherein identical components are presented with like reference characters.It should be noted that word used in the following description Language "front", "rear", "left", "right", "up" and "down" refer to the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" refers respectively to the direction towards or away from geometric center of specific component.

As shown in Figure 1, a kind of harsh operating condition eccentric rotary valve that surges of solid-liquid two-phase, it can be in the harsh operating condition of solid-liquid two-phase Middle use, and can thoroughly solve the problems, such as that valve seal performance is poor, operating characteristics is poor, medium washes away causes internals to be worn.It is above-mentioned The eccentric rotary valve that surges according to sequence from the bottom up as shown in Figure 3 successively includes: plug screw 1, valve body 3,11 and of upper valve rod Executing agency offers a medium runner in valve body 3, can be for the two distinct types of media flow of solid-liquid.Simultaneously such as Fig. 2 With the sphere 6 for shown in Fig. 3, being rotatably connected to an eccentric semi-spherical shape in above-mentioned medium runner, the rotation side of above-mentioned sphere 6 To consistent with the circumferential direction of upper valve rod 11；And the lower end of upper valve rod 11 extends in medium runner and is linked with sphere 6, Its other end extends to outside valve body 3, and executing agency drives above-mentioned upper valve rod 11 to rotate around wherein axis direction；Such as the institute of Fig. 2 and 3 Show, lower valve rod 5 is also rotatably connected on the valve body 3 of the lower end of sphere 6, valve seat 7, above-mentioned valve seat are installed in medium runner 7 end horizontal is mounted in a wing passage of valve body 3, and sphere 6 is equipped with spherical crown, and spherical crown is equipped with the sealing surface 22 of arc (referring to fig. 2), the shape of above-mentioned 22 evagination of sealing surface is consistent with the shape of inner wall indent of valve seat 7；When the valve is closed, valve seat Sealed set between sealing surface 22 on 7 inner walls and spherical crown.From there through executing agency's driving upper valve rod 11 around its central axes side To rotating forward or rotating backward, the rotation of upper valve rod 11 at this time is able to drive sphere 6 and lower valve rod 5 rotates forward together or instead To rotation, thus i.e. may make sealed against each other between the sealing surface 22 of sphere 6 and the inner wall of valve body 3 conflict (valve is closed) or Person is separated from each other (valve is opened).

In order to improve the sealing performance between valve seat 7 and valve body 3, as shown in Figures 2 and 3, between valve seat 7 and valve body 3 Gap in be embedded with two for sealing graphite-seal ring 10, valve seat 7 is on the side far from sphere 6 equipped with a ring-type Locking nut 8 and two holding screws 9, the side of locking nut 8 press the stepped hole being fitted in inside valve body 3 (in figure not Label) interior (referring to Fig. 3), while locking nut 8 can be further locked in the stepped hole inside valve seat 7 by holding screw 9.Its In, two horizontally spaced settings of graphite-seal ring 10, while the two sides of one of graphite-seal ring 10 respectively with valve The outer wall of seat 7 and the inner wall of valve body 3 are inconsistent；The side wall of another graphite-seal ring 10 respectively with the outer wall of valve seat 7, locking screw The inner wall of mother 8 and valve body 3 is inconsistent.Thus it is sealed using two graphite-seal rings 10, is effectively realized to valve seat 7 and valve The stringent sealing of body 3, improves sealing performance.

In order to improve the sealing performance to 3 lower part of valve body, as shown in figure 3, the lower end of lower valve rod 5 is rotatably connected on valve body 3 Lower valve rod aperture in, the lower valve rod aperture of 3 lower part of valve body is equipped with guide sleeve 1, and guide sleeve 1 is mounted on lower valve rod aperture and lower valve rod In gap between 5, and guide-localization is provided by one 4 pairs of lower valve rods 5 of guide sleeve.Simultaneously as shown in figure 3, the rotation of plug screw 1 is located at valve In the lower valve rod aperture of body 3, and compress gasket 2, clamping pad are equipped between 1 outer wall of the lower valve rod aperture inner wall of valve body 3 and plug screw Rubber sheet gasket can be used in piece 2, and plug screw 1 and the end of lower valve rod 5 are inconsistent, and the behaviour of the sealing to 3 lower part of valve body thus can be realized Make, improves sealing performance.

In order to improve the accuracy positioned to sphere 6, as shown in figure 3, the central axes of lower valve rod 5, upper valve rod 11 are at one On straight line, and lower valve rod 5 is close-coupled at the lower end of sphere 6 by way of spline (in figure unmarked), is effectively ensured The accuracy of 6 lower end of sphere positioning.Simultaneously as shown in figure 3, upper valve rod 11 is closely connected by way of spline (in figure unmarked) Connect the accuracy that the positioning of 6 upper end of sphere has been effectively ensured in the upper end of sphere 6.In order to further increase the standard positioned to sphere 6 True property, upper valve rod 11 are mounted in the upper valve rod aperture of valve body 3, and guide sleeve 2 12, guiding are equipped in the upper valve rod aperture on 3 top of valve body It covers in the gap that 2 12 are mounted between the upper valve rod aperture of valve body 3 and upper valve rod 11, and is mentioned by 2 12 pairs of upper valve rods 11 of guide sleeve For guide-localization.

For the sealing performance to upper valve rod 11, as shown in figure 3, in the upper valve rod aperture on 3 top of valve body from the bottom up according to It is secondary to be equipped with Packing seat 13, filler 14, while the top of filler 14 is successively arranged filler pressing sleeve 15, hold-down grid 16 and bolt, Middle filler pressing sleeve 15, the lid of hold-down grid 16 are closed and are compressed on filler 14, while can reach airtight and watertight padding after being fixed by bolts 14 and upper valve rod 11 effect, it is very convenient.

In order to improve the operating characteristics of valve, as shown in Figure 1, above-mentioned executing agency can be hydraulic double-acting driving device 18(model UBFKD80, pressure 7MPa, stroke 115, rotation angle is 90 °, and module is 2.5 moulds, and torsion is 1500N/m, producer are Wuxi City Ji You hydraulic machinery Co., Ltd).Wherein as shown in Fig. 2, in hydraulic double-acting driving device 18 piston rod is equipped with worm screw 20, and worm screw 20 and piston rod are coaxially disposed, and is equipped with a worm gear in the upper end of upper valve rod 11 21, above-mentioned worm gear 21 is arranged with the intermeshing of worm screw 20, and the upper end of upper valve rod 11, which is opened, is equipped with a keyway (unmarked in figure) vertically, As shown in figure 3, being equipped with a flat key 19 in keyway, above-mentioned 19 other end of flat key is plugged on the lower end of worm gear 21, at this time worm gear 21 Lower end can be connect by flat key 19 with the upper end of upper valve rod 11 and can be formed one linkage entirety.Pacify for convenience simultaneously It loads onto and states hydraulic double-acting driving device 18, as depicted in figs. 1 and 2, a bracket 17, above-mentioned branch are also equipped on valve body 3 Frame 17 is bolted on 3 upper end of valve body, and above-mentioned hydraulic double-acting driving device 18 is mountable above bracket 17, and ten Divide and stablizes.

In order to improve the erosive wear resistance of valve, one layer of hard alloy coating is coated in the inner wall of valve seat 7 and (is not shown in figure Out), while in the inner wall of locking nut 8 it is also coated with one layer of hard alloy coating (not shown), above-mentioned hard alloy applies Layer can be wearable hard alloy layer, carbide layers or alumina layer, be also possible to the alloy steel material that list or carburizing are seeped in surface Layer.

When the valve is closed, push worm screw 20 is positive to translate by the piston rod of hydraulic double-acting driving device 18, worm screw 20 Positive translation drive worm gear 21 and upper valve rod 11 to rotate in the forward direction together, and then can drive sphere 6 in upper valve rod 11 Axis rotates in the forward direction, and the inner wall of the sealing surface 22 for making sphere 6 and valve seat 7 fits closely and formed primary seal, can be cut off in runner Medium.

When valve opening, worm screw 20 is pushed reversely to translate by the piston rod of hydraulic double-acting driving device 18, worm screw 20 Reversed translation drive worm gear 21 and lower valve rod 5 to reversely rotate together, and then sphere 6 can be driven around the axis of lower valve rod 5 Line reversely rotates, and is separated from each other sphere 6 with valve seat 7, medium is able to flow to downstream pipe in runner.

Specific embodiment is only the explanation to the utility model, is not limitations of the present invention, this field Technical staff can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but only It will be in the scope of the claims of the utility model all by the protection of Patent Law.

Claims (10)

1. a kind of harsh operating condition eccentric rotary valve that surges of solid-liquid two-phase, include valve body (3), upper valve rod (11), plug screw (1) and Executing agency, valve body (3) is interior to be equipped with medium runner, is equipped with sphere (6) in medium runner；Upper valve rod (11) one end extends to medium It is linked in runner with sphere (6), the other end extends to valve body (3) outside；On the valve body (3) of the lower end of sphere (6) also It is rotatably connected to lower valve rod (5), is equipped with valve seat (7) in medium runner, the valve seat (7) is mounted on a wing passage of valve body (3) In, which is characterized in that sphere (6) is equipped with spherical crown, and spherical crown is equipped with sealing surface (22), between the valve seat (7) and valve body (3) Gap in be equipped with it is several for sealing graphite-seal rings (10), the valve seat (7) far from sphere (6) side on be equipped with Locking nut (8) and holding screw (9) for locking locking nut (8)；When valve is closed, on valve seat (7) inner wall and spherical crown Sealing surface (22) between sealed set.

2. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 1, which is characterized in that described Packing seat (13), filler (14), the top of the filler (14) are successively arranged in the upper valve rod aperture on valve body (3) top from the bottom up It is successively arranged for upper valve rod (11) airtight and watertight padding pressing sleeve (15), hold-down grid (16) and bolt.

3. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 1, which is characterized in that described Compress gasket (2) are equipped between the lower valve rod aperture inner wall and the plug screw (1) outer wall of valve body (3).

4. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 1, which is characterized in that described Lower valve rod (5), upper valve rod (11) are connected to the both ends of sphere (6) by spline respectively.

5. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 1, which is characterized in that described The guide sleeve one (4) for guide-localization lower valve rod (5), valve body (3) top are equipped in the lower valve rod aperture of valve body (3) lower part Upper valve rod aperture in be equipped with for guide-localization upper valve rod (11) guide sleeve two (12).

6. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 1, which is characterized in that described Executing agency is hydraulic double-acting driving device (18).

7. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 6, which is characterized in that described The piston rod of hydraulic double-acting driving device (18) is equipped with worm screw (20), and the upper valve rod (11) is driven close to hydraulic double-acting The worm gear (21) that the one end of dynamic device (18) is equipped with, the worm gear (21) and worm screw (20) intermeshing are arranged, the worm gear (21) lower end is connect with the upper end of upper valve rod (11) by flat key (19).

8. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 7, which is characterized in that described Valve body (3) is equipped with bracket (17), and the bracket (17) is bolted on the side of valve body (3) close to executing agency, institute Executing agency is stated to be mounted on bracket (17).

9. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 1, which is characterized in that described Lower valve rod (5) is rotatably connected in the lower valve rod aperture of valve body (3), and plug screw (1) rotation is located at the lower valve rod aperture of valve body (3), spiral shell It fills in (1) and the end of lower valve rod (5) is inconsistent.

10. the harsh operating condition eccentric rotary valve that surges of a kind of solid-liquid two-phase according to claim 1, which is characterized in that institute The inner wall for stating valve seat (7) is coated with hard alloy coating, and the inner wall of the locking nut (8) is coated with hard alloy coating.