CN208252808U - A kind of manual packless seal floating ball valve - Google Patents

Abstract

The utility model discloses a kind of manual packless seal floating ball valves, it is fixedly connected between the right body and left body by screw, valve seat is mounted on right body by the way of interference fit and a left side is internal, sphere is placed in valve seat, the mode that valve rod is gap-matched is mounted in right body, and valve rod is threadedly coupled with sphere, and electrostatic spring, electrostatic steel ball and O-ring are installed on valve rod, thrust pad and locating plate are set on valve rod, and handle is connected on valve rod and is positioned on valve rod by retaining ring；Screw thread is connected on the upper surface of right body, and locating plate contacts on screw, and gasket seal is set between right body and left body.The utility model structure is simple, good seal performance, long service life and has that small in size, light-weight, installation space is small, easy to use.

Description

A kind of manual packless seal floating ball valve

Technical field:

The utility model relates to a kind of manual packless seal floating ball valves.

Background technique:

Ball valve is to use the sphere with circular channel as opening and closing element, and sphere is revolved with the rotation of valve rod around the axis of valve rod It turn 90 degrees, realizes the purpose of opening and closing.

Valve rod in existing ball valve and valve body connecting portion do not have anti-static device, in ball valve opening-closing process valve rod and Sphere, valve rod and valve body friction, which can generate electrostatic spark, cannot be discharged into big ground, and there are security risks；The sealing of stem position It is generally sealed using flexible graphite packing, poor sealing performance, filler decrement will lead to greatly valve torque increase.

Utility model content:

The utility model be in order to solve the above-mentioned problems of the prior art and to provide a kind of manual packless seal floating Dynamic ball valve.

Technical solution used by the utility model has: a kind of manual packless seal floating ball valve, including right body, a left side Body, sphere, valve seat, valve rod, thrust pad, locating plate, handle, retaining ring, gasket seal, O-ring, screw, electrostatic spring and electrostatic Steel ball is fixedly connected between the right body and left body by screw, and valve seat is mounted on right body and a left side by the way of interference fit In vivo, sphere is placed in valve seat, and the mode that valve rod is gap-matched is mounted in right body, and valve rod is threadedly coupled with sphere, Electrostatic spring, electrostatic steel ball and O-ring are installed on valve rod, and thrust pad and locating plate are set on valve rod, handle connection It is positioned on valve rod on valve rod and through retaining ring；Screw thread is connected on the upper surface of right body, and locating plate contacts at screw On, gasket seal is set between right body and left body.

Further, it is layered above and below in valve rod and is equipped with mounting groove, an electrostatic spring and one is set in each mounting groove A electrostatic steel ball, and the electrostatic spring in the mounting groove of upper layer contradicts electrostatic steel ball on the inner wall of right body；In lower layer's mounting groove Electrostatic spring by electrostatic steel ball contradict on sphere.

Further, the valve rod is equipped with seal groove, and O-ring is set in seal groove.

The utility model has the following beneficial effects:

1) the utility model ball valve uses spring plunger static extractor, makes sphere and valve rod and valve rod and valve body Between formed electrostatic channel, by electrostatic intercommunicating device pass to the earth achieve the purpose that eliminate accumulation of static electricity, avoid electrostatic from producing Raw security risk；

2) improved stem position is sealed using O-ring, and material selection fluorubber is corrosion-resistant, elasticity is good, sealing performance It is good；

3) improved valve rod is using the down-mounting type structure for having back seal, the sealing force of back seal with pressure medium increasing It is high and increases, moreover, valve rod will not be blown out when valve chamber abnormal boosting；

4) maloperation in order to prevent, improved locating plate and the design of right body terminal pad have lockhole apparatus, can be according to visitor Family needs to lock, and avoids maloperation；

5) improved ball valve terminal pad is designed according to general international standard, can be according to the different need of client It asks, selects the executing agencies such as handle, Worm Wheel System, electronic, pneumatic, gas-liquid linked.

Detailed description of the invention:

Fig. 1 is the utility model main view.

Fig. 2 is the utility model top view.

Specific embodiment:

The utility model will be further described below with reference to the accompanying drawings.

Such as Fig. 1 and Fig. 2, a kind of manual packless seal floating ball valve of the utility model, including right body 1, left body 2, sphere 3, valve seat 4, valve rod 5, thrust pad 6, locating plate 7, handle 8, retaining ring 9, gasket seal 10, O-ring 11, screw 14, electrostatic spring 15 and electrostatic steel ball 16, it is fixedly connected between right body 1 and left body 2 by screw, valve seat 4 is mounted on by the way of interference fit In right body 1 and left body 2, sphere 3 is placed in valve seat 4, and the mode that valve rod 5 is gap-matched is mounted in right body 1, and valve rod 5 It is threadedly coupled with sphere 3, electrostatic spring 15, electrostatic steel ball 16 and O-ring 11 are installed on valve rod 5, thrust pad 6 and positioning Piece 7 is set on valve rod 5, and handle 8 is connected on valve rod 5 and is positioned on valve rod 5 by retaining ring 9；Screw 14 is threaded in On the upper surface of right body 1, locating plate 7 is contacted on screw 14, and gasket seal 10 is set between right body 1 and left body 2.

Layering is equipped with mounting groove above and below on valve rod 5, and an electrostatic spring 15 is arranged in each mounting groove and one quiet Electric steel ball 16, and the electrostatic spring 15 in the mounting groove of upper layer contradicts electrostatic steel ball 16 on the inner wall of right body 1；Lower layer's mounting groove Interior electrostatic spring 15 contradicts electrostatic steel ball 16 on sphere 3.

Valve rod 5 is equipped with seal groove, and O-ring 11 is set in seal groove.

The utility model ball valve uses spring plunger static extractor, make sphere and valve rod and valve rod and valve body it Between formed electrostatic channel, by electrostatic intercommunicating device pass to the earth achieve the purpose that eliminate accumulation of static electricity, avoid electrostatic from generating Security risk.

Stem position is sealed using O-ring, and material selection fluorubber is corrosion-resistant, elasticity is good, good seal performance.

Valve rod is increased using the down-mounting type structure for having back seal, the sealing force of back seal with increasing for pressure medium, Moreover, valve rod will not be blown out when valve chamber boosts extremely；

Maloperation in order to prevent, improved locating plate and the design of right body terminal pad have lockhole apparatus, can be according to client Need to lock, avoid maloperation.

Ball valve terminal pad is designed according to general international standard, can according to the different demands of client, select handle, The executing agencies such as Worm Wheel System, electronic, pneumatic, gas-liquid linked.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art It for art personnel, can also make several improvements without departing from the principle of this utility model, these improvement also should be regarded as The protection scope of the utility model.

Claims (4)

1. a kind of manual packless seal floating ball valve, it is characterised in that: including right body (1), left body (2), sphere (3), valve seat (4), valve rod (5), thrust pad (6), locating plate (7), handle (8), retaining ring (9), gasket seal (10), O-ring (11), screw (14), electrostatic spring (15) and electrostatic steel ball (16) are fixedly connected between the right body (1) and left body (2) by screw, valve seat (4) it is mounted on by the way of interference fit in right body (1) and left body (2), sphere (3) is placed in valve seat (4), and valve rod (5) is adopted It is mounted in right body (1) with the mode of clearance fit, and valve rod (5) is threadedly coupled with sphere (3), electrostatic spring (15), electrostatic Steel ball (16) and O-ring (11) are installed on valve rod (5), and thrust pad (6) and locating plate (7) are set on valve rod (5), hand Handle (8) is connected on valve rod (5) and is positioned on valve rod (5) by retaining ring (9)；Screw (14) is threaded in right body (1) On upper surface, locating plate (7) is contacted on screw (14), and gasket seal (10) is set between right body (1) and left body (2).

2. manual packless seal floating ball valve as described in claim 1, it is characterised in that: divide above and below on the valve rod (5) Layer is equipped with mounting groove, an electrostatic spring (15) and an electrostatic steel ball (16) is arranged in each mounting groove, and upper layer is installed Electrostatic spring (15) in slot contradicts electrostatic steel ball (16) on the inner wall of right body (1)；Electrostatic spring in lower layer's mounting groove (15) electrostatic steel ball (16) are contradicted on sphere (3).

3. manual packless seal floating ball valve as described in claim 1, it is characterised in that: the valve rod (5) is equipped with close Sealing groove, O-ring (11) are set in seal groove.

4. manual packless seal floating ball valve as described in claim 1, it is characterised in that: the locating plate (7) and right body (1) there is lockhole on.