CN2654969Y

CN2654969Y - Rotary spool water-proof valve

Info

Publication number: CN2654969Y
Application number: CN 200320102641
Authority: CN
Inventors: 崔德义; 杨大蒲
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-04
Filing date: 2003-11-04
Publication date: 2004-11-10
Anticipated expiration: 2013-11-04

Abstract

The utility model relates to a valve, wherein, a spool comprises a pair of disc valve plates, a valve rod head, two spring rods and two springs. A side of the disc valve plate is flat, which is connected with the inner side of a bonnet and can slide along the inner side. The center of the other side is secured with a ring seat. Two ends of the cylindrical valve rod head are inserted in the ring seat with a radial clearance, and the inserted parts of the two ends are milled to be flat symmetrically to secure the two disc valve plates between the two bonnets. The valve rod head is connected with the valve rod through a connection ring and a connection joint. An end of the valve rod is round, and the other end is in a screw connection with a rotary device through a ring valve case and a connection device. The utility model has the advantages that the rotary spool structure can generate uniform friction between the disc valve plates and the bonnets and can compensate and adjust the interface pressure between the disc valve plates and the bonnets to ensure the rigorous closure of the interface and to prevent solid particles in the fluid infiltrating through the interface between the disc valve plates and the bonnets; and the wear resistance of the valve is improved to a great extent.

Description

The wear-resisting valve of rotary spool

Technical field

The utility model relates to a kind of valve, is a kind of valve that is used for containing the conveyance conduit of solid particle, fluid that powdered granule is many specifically.

Background technique

The kind of valve is a lot, and is complete in specifications, uses extensively.In multiple industries such as oil, chemical industry and nonferrous metallurgy, contain solid particle, powdered granule is many, and in the conveyance conduit of the fluid of the big slip of stickiness and so on, uses gate valve and stop valve more.But the working life of this class valve is short, mainly be spool and valve gap quick abrasion, the phase mutual friction all arranged, owing to mixing of solid particle because open or close at every turn, this friction meeting produces very dark cut between the contact surface of spool and valve gap, cause seal failure and valves leakage.And be designed to the stop valve that " S " type runner is made valve body, fluid in runner the flow direction meeting and sealing surface between constitute one and impact angle, thereby form erosive wear, the working life of also reducing valve.

The model utility content

Goal of the invention of the present utility model be to provide a kind of wearing and tearing less, long service life, spool is the valve of rotational structure.

The wear-resisting valve of the utility model rotary spool comprises the spool and the valve rod that are installed in the valve body that is made of valve gap and valve casing, and wherein spool comprises the pair of discs valve plate, stem head, two spring rods and two springs; The disk valve plate simultaneously is the plane, with the inner side surface contact seal of valve gap, and can slide along inner side surface, and another side center and ring seat are connected and fixed; Cylindric stem head center symmetry pack into two spring rods and with the spring of its suit, insert in the ring seat at its two ends, and radial clearance is arranged between the two, and the two ends insertion portion mills flatly symmetrically, and the pair of discs valve plate is limited between two valve gaps; The outside center of stem head also is provided with fastener rings, is welded to connect with being connected first end, and the other end of connecting head is connected with threaded stem; Valve rod one end is a round bar, and the other end is a screw rod, and passes circular valve casing and connection set, is connected with slewing gear.

The wear-resisting valve of the utility model rotary spool, wherein connection set comprises bearing, lower connecting plate, upper junction plate and two cradling pieces that are fixed on the valve casing external diameter; Bearing upper end is connected with the lower connecting plate vertical fixing, and upper junction plate is threaded with lower connecting plate by described two cradling pieces, and two cradling pieces and valve rod are parallel to each other in a plane.

The wear-resisting valve of the utility model rotary spool, wherein slewing gear comprises nut sleeve, bearing and handwheel; Nut sleeve is connected with the screw rod of valve rod is equipped, and Bearing Installation is fixed on the center of upper junction plate, and its inner ring is fixedlyed connected with the lower end of described nut sleeve; Handwheel is fixedlyed connected with the upper end of nut sleeve.

The wear-resisting valve of the utility model rotary spool, wherein the seal lubrication cover is equipped with at the bearing center.

The wear-resisting valve of the utility model rotary spool wherein is provided with the guide plate that valve rod moves up and down between two cradling pieces, and this guide plate is two, fixes at center and valve rod by bolt, and the guide surface at two ends slides along cradling piece.

Spraying tungsten carbide tool or built-up welding strontium titanium Lay alloy abrasion resistance material layer on the face that valve gap and disk valve plate are tightly connected, and valve gap is circle or long-round-shape.

The utility model rotary spool structure, make and produce friction between disk valve plate and the valve gap equably, and the contact pressure between compensation adjustment disk valve plate and the valve gap flexibly, the surface of contact that guarantees both reaches tight closure, solid particle in the fluid is difficult for the centre of the surface of contact of infiltration disk valve plate and valve gap, the wear-resisting property of valve improves greatly, and greatly prolong working life, and maintenance easily.

Description of drawings

Fig. 1 is the utility model structural profile schematic representation;

Fig. 2 is that the A of Fig. 1 is to view;

Fig. 3 is the B-B generalized section of Fig. 1.

Embodiment

As seen from Figure 1, valve body of the present utility model is by connecting and composing with bolt around circular valve casing 9 and two circular valve gaps 5, and spool and valve rod 8 are installed in the valve body, and wherein spool comprises pair of discs valve plate 1,2, two spring rods 3 of stem head and two springs 4; The diameter of disk valve plate 1 is greater than the valve body nominal aperture, and one side is the plane, with the inner side surface contact seal of valve gap 5, and can slide along inner side surface, and another side center and ring seat 6 are connected and fixed; Stem head 2 center symmetries cylindraceous pack into two spring rods 3 and with the spring 4 of its suit, insert in the ring seat 6 at its two ends, and radial clearance is arranged between the two, and the two ends insertion portion mills flatly symmetrically, and pair of discs valve plate 1 is limited between two valve gaps 5; Stem head 2 outside centers also are provided with fastener rings, are welded to connect with connecting head 7 one ends, and the other end of connecting head 7 is threaded with valve rod 8; Valve rod 8 one ends are round bar, and the other end is a screw rod, and pass circular valve casing 9 and connection set, are connected with slewing gear.Valve rod 8 is positioned at the diametric(al) at valve casing 9 centers, and the axis of the access way that its axis and two valve gaps 5 are formed is in a plane, and is and vertical mutually.

Bearing 11 upper ends in the connection set are connected with lower connecting plate 12 vertical fixing, and upper junction plate 13 is threaded with lower connecting plate 12 by two cradling pieces 14, and two cradling pieces 14 and valve rod 8 are parallel to each other in a plane.Nut sleeve 15 in the slewing gear is connected with the screw rod of valve rod 8 is equipped, and bearing 16 is fixed on the center of upper junction plate 13, and its inner ring is fixedlyed connected with the lower end of nut sleeve 15; Handwheel 17 is fixedlyed connected with the upper end of nut sleeve 15.Rotate handwheel 17 valve rod 9 is moved up and down, slide up and down, realize opening and closing function, see Fig. 2 and Fig. 3 thereby drive disk valve plate 1.

Owing to have certain clearance between the ring seat 6 of clutch disk valve plate 1 and the stem head 2, under the effect of valve rod 8, when disk valve plate 1 is slided up and down between two valve gaps 5, also under the effect of the eccentric moment that in valve rod 8 and disk valve plate 1, produces, disk valve plate 1 every knee-action is once all rotated a certain angle simultaneously, make and produce friction between disk valve plate 1 and the valve gap 5 equably; Again because the effect of stem head 2 inner springs 4, make between disk valve plate 1 and the valve gap 5, owing to fretting wear, expand with heat and contract with cold and the factors such as variation of back pressure cause the variation of contact pressure between the two, can flexibly be compensated adjustment, the surface of contact that guarantees both reaches tight closure, makes the solid particle in the fluid be difficult for infiltrating in the middle of the surface of contact; Also all spray tungsten carbide tool or built-up welding strontium titanium Lay alloy high strength wear-resistant material layer on the surface of contact because of disk valve plate 1 and valve gap 5, thereby the wear-resisting property of valve body is greatly improved, prolong the working life of valve.

Valve rod 9 in the utility model can also be connected with slewing gear with connection set such as pneumatic or electronic, drives the unlatching of valve or closes.

Claims

1, the wear-resisting valve of a kind of rotary spool comprises the spool and the valve rod that are installed in the valve body that is made of valve gap and valve casing, it is characterized in that described spool comprises pair of discs valve plate (1), stem head (2), two spring rods (3) and two springs (4); Described disk valve plate (1) one side is the plane, with the inner side surface contact seal of described valve gap (5), and can slide along inner side surface, and another side center and ring seat (6) are connected and fixed; Described cylindric stem head (2) center symmetry pack into two spring rods (3) and with the spring (4) of its suit, insert in the described ring seat (6) at its two ends, radial clearance is arranged between the two, and the two ends insertion portion mills flat symmetrically, and pair of discs valve plate (1) is limited between described two valve gaps (5); The outside center of described stem head (2) also is provided with fastener rings, is welded to connect with connecting head (7) one ends, and the other end of described connecting head (7) is threaded with described valve rod (8); Described valve rod (8) one ends are round bar, and the other end is a screw rod, and passes circular valve casing (9) and connection set, is connected with slewing gear.

2, the wear-resisting valve of rotary spool according to claim 1 is characterized in that described connection set comprises bearing (11), lower connecting plate (12), upper junction plate (13) and two cradling pieces (14) that are fixed on described valve casing (9) external diameter; Described bearing (11) upper end is connected with described lower connecting plate (12) vertical fixing, described upper junction plate (13) is threaded with described lower connecting plate (12) by described two cradling pieces (14), and described two cradling pieces (14) and described valve rod (8) are parallel to each other in a plane.

3,, it is characterized in that described slewing gear comprises nut sleeve (15), bearing (16) and handwheel (17) according to claim 1, the wear-resisting valve of 2 described rotary spools; Described nut sleeve (15) is connected with the screw rod of described valve rod (8) is equipped, and described bearing (16) is fixed on the center of described upper junction plate (13), and its inner ring is fixedlyed connected with the lower end of described nut sleeve (15); Described handwheel (17) is fixedlyed connected with the upper end of described nut sleeve (15).

4, the wear-resisting valve of rotary spool according to claim 3 is characterized in that described bearing (11) center is equipped with seal lubrication cover (10).

5, the wear-resisting valve of rotary spool according to claim 4, it is characterized in that being provided with between described two cradling pieces (14) guide plate (18) that described valve rod (8) moves up and down, this guide plate (18) is two, fixing at center and described valve rod (8) by bolt, the guide surface at two ends slides along cradling piece (14).

6, the wear-resisting valve of rotary spool according to claim 5 is characterized in that spraying tungsten carbide tool or built-up welding strontium titanium Lay alloy abrasion resistance material layer on the face that described valve gap (5) and described disk valve plate (1) be tightly connected.

7, the wear-resisting valve of rotary spool according to claim 6 is characterized in that described valve gap (5) is circle or long-round-shape.