CN209587205U - A kind of cast steel ball valve - Google Patents

Abstract

The utility model discloses a kind of cast steel ball valve, drip irrigation device includes valve body, valve seat, positioned at the sphere of valve inner cavity, valve deck, spanner and both ends are connect with sphere and spanner respectively after valve deck valve rod；The spanner includes lower ejector lever, upper ejector lever；The valve deck upper end is provided with the position-arresting disk with through-hole；The stop collar for being limited disk limit is provided on the valve rod；The lower ejector lever is set to above stop collar to be contacted and lower ejector lever is relative to valve rod rotation with valve rod line；It is contacted between the lower ejector lever and valve rod by fixture block；Stem diameter above the lower ejector lever becomes larger to form a bulge loop；The card slot being adapted to fixture block is provided on the bulge loop；It is adapted between the lower ejector lever and bulge loop；The u-shaped setting in card slot section, the utility model have the effect of reducing security risk.

Description

A kind of cast steel ball valve

Technical field

The utility model relates to a kind of valves, and more specifically it is related to a kind of cast steel ball valve.

Background technique

The valve that cast steel ball valve opening and closing element (sphere) is driven by valve rod, and rotated around the axis of valve rod.It is main to use In being truncated or connecting the medium in pipeline, it also can be used for the adjusting and control of fluid, cast steel ball valve is generally divided into handle cast steel ball Valve, pneumatic cast steel ball valve, electronic cast steel ball valve, cast iron globe valve, stainless steel ball valve, full copper ball valve etc..

Currently, the Chinese patent that notification number is CN202381737U discloses a kind of fire-proof ball valve, its valve body, valve seat, valve Bar, sphere and handle, the valve body are equipped with flow channel and flow pass, and valve is equipped between flow channel and flow pass Chamber, valve chamber are equipped with valve seat close to flow channel one end and close to flow pass one end, are equipped with sphere, the valve between valve seat Body is equipped with valve rod hole, and valve rod hole bottom is equipped with gasket, and valve rod passes through valve rod hole, and valve rod one end and sphere grafting constitute circumferential It is located by connecting, the valve rod other end is equipped with handle, and the valve seat uses carbon fiber, and valve seat is equipped with the sealing with ball seal Face constitutes soft seal, and curved surface is equipped between the flow channel and flow pass and valve chamber, which cooperatively forms with sphere Sealing, constitutes hard sealing, and the ball valve is equipped with the anti-static device of electric conductor.But the product is in actual use, Handle easily generates the case where maloperation, to cause biggish safety accident.

Utility model content

In view of the deficienciess of the prior art, having prevents spanner quilt the utility model lies in that providing a kind of cast steel ball valve The effect for causing sphere to rotate such maloperation is accidentally touched, security risk can be reduced.

To achieve the above object, the utility model provides following technical solution: a kind of cast steel ball valve, including valve body, valve Seat, positioned at the sphere of valve inner cavity, valve deck, spanner and both ends are connect with sphere and spanner respectively after valve deck valve Bar；It is characterized by: the spanner includes lower ejector lever, upper ejector lever；The valve deck upper end is provided with the position-arresting disk with through-hole；Institute State the stop collar for being provided on valve rod and being limited disk limit；The lower ejector lever be set to above stop collar contacted with valve rod line and under Spanner is rotated relative to valve rod；It is contacted between the lower ejector lever and valve rod by fixture block；Stem diameter above the lower ejector lever becomes A bulge loop is formed greatly；The card slot being adapted to fixture block is provided on the bulge loop；It is adapted between the lower ejector lever and bulge loop；It is described The u-shaped setting in card slot section.

By using above-mentioned technical proposal, lower ejector lever is lifted upwards, allowed after the cooperation of fixture block and card slot, can be realized pair The rotation of valve rod, stop collar rotation is driven in valve rod rotation process, then be limited disk limit, when not needing rotation, Lower ejector lever is under gravity detached from fixture block and card slot, prevents from accidentally touching.

The utility model is further arranged to: the lower ejector lever includes the symmetrically arranged biography of an annulus and annulus two sides Swing arm；The fixture block is axially extending on the inner sidewall of annulus；There are two symmetrically arranged positioning for the upper surface tool of the annulus Pin.

The utility model is further arranged to: the ball bearing of setting and valve rod interference fit above the bulge loop；Ball Upper ejector lever is also socketed on the outside of bearing；The upper ejector lever includes the cursor of annulus and annulus two sides；The annulus and ball axis Hold interference fit.

By using above-mentioned technical proposal, transmission arm can facilitate grip, and ball bearing can reduce frictional force, in convenience Spanner is rotated relative to valve rod.

The utility model is further arranged to: the position setting corresponding with positioning pin of the lower section of the cursor of the upper ejector lever It is fluted；The groove is adapted to positioning pin top.

, by the cooperation of positioning pin and groove, facilitate under drive after upper ejector lever rotation by using above-mentioned technical proposal Spanner rotation.

The utility model is further arranged to: threaded hole is arranged in the valve rod upper top, is additionally provided with fixed plate and spiral shell Nail；The screw passes through fixed plate and is threadedly coupled with threaded hole；The fixed plate limits upper ejector lever.

The utility model is further arranged to: the stop collar and valve rod are interference fitted.

By using above-mentioned technical proposal, fixed plate can prevent upper ejector lever and ball bearing and valve rod to be detached from；Limit Ring can then limit valve rod rotation after being limited disk limit.

In conclusion the utility model has the following beneficial effects: can prevent upper ejector lever, lower ejector lever the case where accidentally touching Under cause sphere to rotate such maloperation, security risk can be reduced, and structure is relatively easy, be easily installed and realize.

Detailed description of the invention

Fig. 1 is the present embodiment structural schematic diagram；

Fig. 2 is the portion the A enlarged drawing of Fig. 1；

Fig. 3 is the present embodiment lower ejector lever structural schematic diagram；

Fig. 4 is the present embodiment stem structure schematic diagram；

Fig. 5 is position-arresting disk structural schematic diagram in the present embodiment；

Fig. 6 is stop collar structural schematic diagram in the present embodiment.

Appended drawing reference: 1, valve body；2, valve seat；3, valve deck；4, valve rod；5, position-arresting disk；6, through-hole；7, limited block；8, it limits Ring；9, bulge loop；10, card slot；11, ball bearing；12, upper ejector lever；13, lower ejector lever；14, transmission arm；15, groove；16, it positions Pin；17, fixed plate；18, threaded hole；19, fixture block.

Specific embodiment

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

Present embodiment discloses a kind of cast steel ball valves, and as shown in Figures 1 to 6, including valve body 1, valve seat 2 are located in valve body 1 The sphere of portion's cavity, valve deck 3, spanner and the valve rod 4 that both ends are connect with sphere and spanner respectively after valve deck 3；On valve deck 3 Side is provided with position-arresting disk 5, and position-arresting disk 5 is connected by screw to valve deck 3；It is provided with above position-arresting disk 5 and leads to convenient for what valve rod 4 passed through Hole 6,6 two sides of through-hole are symmetrically arranged with limited block 7；Restraining position ring block 8 is set on valve rod 4；Limit when valve rod 4 rotates, on valve rod 4 Position ring 8 is limited by the limited block 7 of two sides；The structure of stop collar 8 is the disk that middle part has through-hole 6, is extended with two on the outside of disk The laminated structure of a sector；It is provided with bulge loop 9 on 4 upper end side wall of valve rod, is symmetrical arranged that there are two card slots 10 on 9 side wall of bulge loop； The section of card slot 10 is U-shaped, and the nearest linear distance between two card slots 10 is greater than or equal to the diameter of valve rod 4；Bulge loop 9 Ball bearing 11 is provided on the valve rod 4 of top；There are two spanner settings, respectively upper ejector lever 12 and lower ejector lever 13；On pull Hand 12 includes an annulus and the monosymmetric transmission arm 14 of annulus, and annulus is socketed on ball bearing 11, with ball bearing 11 are interference fitted, and are arranged fluted 15 on the downside of the transmission arm 14 of upper ejector lever 12；Lower ejector lever 13 equally includes an annulus and circle The monosymmetric transmission arm 14 of ring, there are two fixture block 19, the shape sizes of fixture block 19 for setting on the annulus inner sidewall of lower ejector lever 13 It is adapted with the card slot 10 on 9 side wall of bulge loop；Annulus upper surface two sides are symmetrically arranged with positioning pin 16, the upper end of positioning pin 16 with The groove 15 of 12 transmission arm of upper ejector lever, 14 downside is adapted to；The circle diameter size of lower ejector lever 13 is consistent with 9 diameter of bulge loop；In In actual installation process, on the valve deck 3 being installed on position-arresting disk 5 above valve body 1 after, be first socketed lower ejector lever on valve rod 4 13, when 13 annulus upper surface of lower ejector lever offsets with 9 lower surface of bulge loop, stop collar 8, stop collar 8 are then socketed on valve rod 4 again Positioned at 13 annulus lower surface of lower ejector lever；Valve rod 4 is passed through into position-arresting disk 5, valve deck 3 again, finally by valve rod 4 and 1 internal cavities of valve body Sphere be fixedly connected；Upper ejector lever 12 on 11 lateral wall of ball bearing 11 and ball bearing is socketed with valve rod 4, realizes two The interference fit of person is additionally provided with the circular fixed plate 17 that middle part has through-hole 6, the diameter of fixed plate 17 at the top of valve rod 4 Greater than the diameter of 12 annulus of upper ejector lever, threaded hole 18 is arranged in 4 upper top of valve rod, and screw passes through fixed plate 17 and 18 screw thread of threaded hole Connection so that fixed plate 17 is fixed on 4 upper end of valve rod, and then carries out ball bearing 11 and upper ejector lever 12 using fixed plate 17 Limit prevents ball bearing 11 and upper ejector lever 12 to be detached from valve rod 4；In addition, the annulus upper surface on lower ejector lever 13 is symmetrical arranged The plane of symmetry of the plane of symmetry and the transmission arm 14 on the outside of 13 annulus of lower ejector lever of positioning pin 16 be same.

The utility model in actual use because installation when structure and position setting, upper ejector lever 12 with It is connected between valve rod 4 by ball bearing 11, upper ejector lever 12 is rotated relative to valve rod 4, so individually rotating upper ejector lever 12 Cursor is cannot to rotate that the rotation of sphere is driven to play the role of opening and closing ball valve with ovable valve stem 4, and lower ejector lever 13 is round Fixture block 19 on the inside of ring is the U-shaped being adapted to card slot 10, and the distance between two fixture blocks 19 are equal to the diameter of valve rod 4, institute It is contacted with lower ejector lever 13 with 4 line of valve rod, friction is small, fixture block when rotating lower ejector lever 13, on 13 annulus of lower ejector lever 19 play the role of opening and closing ball valve with 4 sliding friction of valve rod, and the rotation that cannot rotate drive sphere with ovable valve stem 4 's；And want to achieve the effect that play opening and closing ball valve by rotation valve rod 4, then it needs upwards to lift lower ejector lever 13, makes fixture block 19 are clamped into card slot 10, while 16 grafting of positioning pin enters in the groove 15 on upper ejector lever 12, clutches upper ejector lever 12, lower ejector lever 13 cursor, while upper ejector lever 12, lower ejector lever 13 are rotated, during rotation, the cursor rotation of lower ejector lever 13 drives card Block 19 rotates, but fixture block 19 is limited by card slot 10, and then rotates with ovable valve stem 4, and the rotation of the cursor of upper ejector lever 12 drives and determines Position pin 16 rotate, and then drive lower ejector lever 13 rotation, after turning to suitable position, unclamp the upper ejector lever 12 clutched, under The cursor of spanner 13, lower ejector lever 13 are fallen downwards under gravity, are detached from fixture block 19 and card slot 10, such mechanism Setting can prevent from accidentally touching, such as during walking, and accidentally leg has encountered the spanner on the ball valve of installation on the ground, commonly Ball valve will occur accidentally to touch, and if it is the ball valve of the utility model, even if leg has accidentally touched the spanner above ball valve, It can only rotate, without because the problem of sphere caused by accidentally touching rotates, ensure that the safety that ball valve uses.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel design concept, any modification, equivalent replacement, improvement and so on should be included in the protection of the utility model Within the scope of.

Claims (6)

1. a kind of cast steel ball valve, including valve body (1), valve seat (2) are located at the sphere of valve body (1) internal cavities, valve deck (3), spanner And pass through valve deck (3) valve rod (4) that both ends are connect with sphere and spanner respectively afterwards；It is characterized by: under the spanner includes Spanner (13), upper ejector lever (12)；Valve deck (3) upper end is provided with the position-arresting disk (5) with through-hole (6)；On the valve rod (4) It is provided with the stop collar (8) for being limited disk (5) limit；The lower ejector lever (13) is set to above stop collar (8) and valve rod (4) line It contacts and lower ejector lever (13) is rotated relative to valve rod (4)；It is contacted between the lower ejector lever (13) and valve rod (4) by fixture block (19)； Bulge loop (9) are provided with above the valve rod (4)；The bulge loop (9) is located above lower ejector lever (13) and diameter is greater than valve rod (4) directly Diameter；The card slot (10) being adapted to fixture block (19) is provided on the bulge loop (9)；It is fitted between the lower ejector lever (13) and bulge loop (9) Match；The u-shaped setting in card slot (10) section.

2. a kind of cast steel ball valve according to claim 1, it is characterised in that: the lower ejector lever (13) include annulus with And the symmetrically arranged transmission arm in annulus two sides (14)；The fixture block (19) is axially extending on the inner sidewall of annulus；The annulus Upper surface tool there are two symmetrically arranged positioning pin (16).

3. a kind of cast steel ball valve according to claim 2, it is characterised in that: setting and valve rod (4) above the bulge loop (9) The ball bearing (11) of interference fit；Also upper ejector lever (12) are socketed on the outside of ball bearing (11)；The upper ejector lever (12) includes circle Ring and the cursor of annulus two sides；The annulus and ball bearing (11) are interference fitted.

4. a kind of cast steel ball valve according to claim 3, it is characterised in that: the lower section of the cursor of the upper ejector lever (12) Fluted (15) are arranged in position corresponding with positioning pin (16)；The groove (15) is adapted to positioning pin (16) top.

5. a kind of cast steel ball valve according to claim 1, it is characterised in that: threaded hole is arranged in valve rod (4) upper top (18), fixed plate (17) and screw are additionally provided with；The screw passes through fixed plate (17) and is threadedly coupled with threaded hole (18)；Institute Fixed plate (17) is stated to limit upper ejector lever (12).

6. a kind of cast steel ball valve according to claim 1, it is characterised in that: the stop collar (8) is matched with valve rod (4) interference It closes.