CN208237123U - Eccentric half-ball valve - Google Patents

Abstract

The utility model relates to water valve field, eccentric half-ball valve, including valve body are internal to have overcurrent chamber, and body top opens wide, and valve body wall is equipped with the water inlet and water outlet being connected to flowing hole；Valve deck is enclosed in body top and opens wide place；Valve rod is deep into overcurrent chamber across valve deck；Spool is connected to valve rod and is located in overcurrent chamber, which has hemispheric sealing spherical surface body；Valve seat is arranged in valve body water outlet position；The longitudinal center line eccentric setting of the valve body longitudinal center line and the valve rod, and the center line coplanar orthogonal with overcurrent chamber, the spool can be driven rotation from valve rod and the surface cooperated with closing overcurrent chamber cross section with the valve seat, the valve body and the seal spool spherical surface body has hard alloy layer；The bottom interior wall of the valve body overcurrent chamber is equipped with support construction, and the spool lower end is equipped with pipe sleeve, which is set on the support structure, and pipe sleeve can be rotated along the outer ring surface of support construction.

Description

Eccentric half-ball valve

Technical field

The utility model relates to water valve field, especially a kind of eccentric half-ball valve.

Background technique

Some superiority that it has self structure exclusive, such as switch seal not easy to wear, opening and closing torque without friction It is small.The specification of matched actuator can be reduced in this way.Multi-rotary electric actuator is equipped with, it can be achieved that the adjusting of medium and tight Cutting.

PBQ type ball valve is suitable for blast furnace grain slag system, due to containing a large amount of grain slag particle, common valve in the system media Door is difficult to adapt to this operating condition, and service life is low.

Utility model content

To solve the above problems, this utility model provides a kind of eccentric half-ball valve, which is suitable in water Contain impurity operating condition.

In order to achieve the above purposes, the technical solution adopted by the utility model is:

Eccentric half-ball valve, including valve body, internal to have overcurrent chamber, body top opens wide, and valve body wall is equipped with and mistake The water inlet and water outlet of discharge orifice connection；Valve deck is enclosed in body top and opens wide place；Valve rod is deep into overcurrent chamber across valve deck In；Spool is connected to valve rod and is located in overcurrent chamber, which has hemispheric sealing spherical surface body；Valve seat is arranged in valve Body water outlet position；The longitudinal center line eccentric setting of the valve body longitudinal center line and the valve rod, and in overcurrent chamber Heart line coplanar orthogonal, the spool can from valve rod drive rotation and with the valve seat with closing overcurrent chamber cross section, the valve The surface of body and seal spool spherical surface body cooperation has hard alloy layer；The bottom interior wall of the valve body overcurrent chamber is equipped with branch Support structure, the spool lower end are equipped with pipe sleeve, which is set on the support structure, and pipe sleeve can be along the outer ring of support construction Face rotation.

Preferably, the support construction includes support column and axle sleeve, the support column is intracorporal including being fixed on valve Support column first segment is less than support column first segment with the intracavitary support column second segment of overcurrent, the diameter of support column second segment is extend into Diameter, the axle sleeve is sleeved on support column second segment, and the pipe sleeve is sleeved on axle sleeve outer ring.

Preferably, the lower end of the support column second segment outer ring surface is equipped with the annular shaft shoulder, the pipe sleeve lower end surface is supported It connects above the shaft shoulder.

Preferably, being equipped with the first sealing ring between the valve body and valve seat.

Preferably, the valve seat water outlet is equipped with step structure, valve seat water outlet is additionally provided with positioning ring, described Valve seat is installed between step structure and positioning ring.

Preferably, the surface that the valve seat is contacted with positioning ring is positioning surface, the valve seat, which is located at, flows to interior table Angle between face and positioning surface is chamfering structure.

Preferably, the spool includes the connection structure for connecting valve rod and sealing spherical surface body, during which is Empty spherical a part.

Preferably, the eccentric half-ball valve further includes driving device, which is for increasing driving stem The gear set of driving torque.

Using the beneficial effects of the utility model are:

Present apparatus setting is by the valve body and valve rod eccentric setting in eccentric half-ball valve, so that band dynamic sealing when valve rod rotates Spherical surface body and valve seat fitting, when the valve is closed since have this eccentricity is just also that instantaneous touch is complete with valve seat there are spool It at the closing process of valve, reduces and wears between sealing surface, and the more close the more tight to guarantee the closing performance of valve.For to greatest extent Reduction spool and valve seat contact area, by spool design at the structure type of hemisphere.

For the wearability for increasing valve sealing face, the requirement of grain slag system, the spherical crown surface overlaying of spool are better adapted to Hard alloy layer, to increase its durability.

Detailed description of the invention

Fig. 1 is the sectional view of the utility model eccentric half-ball valve.

Fig. 2 is the partial top schematic diagram of the utility model eccentric half-ball valve.

Fig. 3 is the portion A partial enlarged view in Fig. 1.

Fig. 4 is the portion B partial enlarged view in Fig. 1.

Appended drawing reference includes:

1- driving device,

2- valve rod,

3- valve body,

4- spool, 41- ball seat, 42- pipe sleeve, 43- connection structure, 44- seal spherical surface body,

5- valve seat, 51- hard alloy layer, the first sealing ring of 52-, the outer transition face of 53-,

6- sealing structure, 61- filler material, the second sealing ring of 62-,

7- support construction, 71- support column first segment, 72- support column second segment, 73- axle sleeve, the 74- shaft shoulder,

L1- valve body center line, L2- valve rod center line, e- eccentricity.

Specific embodiment

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

As Figure 1-Figure 2, the present embodiment provides a kind of eccentric half-ball valves, including valve body 3, internal to have overcurrent chamber, It is opened wide at the top of valve body 3, and 3 wall of valve body is equipped with the water inlet and water outlet being connected to flowing hole；Valve deck is enclosed in the top of valve body 3 Place is opened wide in portion；Valve rod 2 is deep into overcurrent chamber across valve deck；Spool 4 is connected to valve rod 2 and is located in overcurrent chamber, the valve Core 4 has hemispheric sealing spherical surface body 44；Valve seat 5 is arranged in 3 water outlet position of valve body；3 longitudinal center line of valve body and valve rod 2 longitudinal center line eccentric setting, and the center line coplanar orthogonal with overcurrent chamber, spool 4 can be driven rotation and and valve by valve rod 2 5 cooperation closing overcurrent chamber cross section of seat, valve body 3 and spool 4 seal the surface that spherical surface body 44 cooperates and have hard alloy layer 51；Valve The bottom interior wall of 3 overcurrent chamber of body is equipped with support construction 7, and 4 lower end of spool is equipped with pipe sleeve 42, which is sleeved on support construction 7 On, and pipe sleeve 42 can be rotated along the outer ring surface of support construction 7.

As shown in Figure 1,3 inner hollow of valve body, the hollow part of valve body 3 is equipped with horizontally disposed in this eccentric half-ball valve The overcurrent chamber of tubulose is equipped with hemispherical chamber in overcurrent chamber middle position, and the corresponding chamber roof is equipped with through-hole, the chamber two Side is respectively water inlet and water outlet, is equipped with support construction 7 in the indoor bottom of chamber, wherein 2 through-hole chamber roof of valve rod is logical Hole reaches in chamber, and 4 top of spool is connected to 2 lower end of valve rod, and the lower part of spool 4 is connected in support construction 7, corresponding in valve Sealing structure 6 is arranged in position between core 4 and valve body 3, and corresponding valve body 3 and 7 contact surface of support construction are equipped with sealing ring, so that The indoor water of chamber will not flow out overcurrent chamber from the gap between two components.

Present apparatus setting is by 2 eccentric setting of valve body 3 and valve rod in eccentric half-ball valve, so that valve rod 2 drives when rotating Spherical surface body 44 and valve seat 5 is sealed to be bonded, when the valve is closed due to have this eccentric distance e there are spool 4 just with valve seat 5 and Instantaneous touch completes the closing process of valve, reduces and wears between sealing surface, and the more closes the more tight to guarantee the closing performance of valve. For the contact area for reducing spool 4 Yu valve seat 5 to greatest extent, spool 4 is designed to the structure type of hemisphere.Meanwhile to increase The wearability for adding valve sealing face better adapts to the requirement of grain slag system, the spherical crown surface overlaying hard alloy layer of spool 4 51, to increase its durability.

In the present embodiment, spool 4 includes ball seat 41, pipe sleeve 42, connection structure 43 and sealing structure 6, wherein support knot 7 main body of structure is column structure, and the ball seat 41 of spool 4 is connected to the lower end of valve rod 2, and the part of pipe sleeve 42 is sleeved on support construction 7 The top of main body, so that pipe sleeve 42 can arbitrarily be rotated along the top of 7 main body of support construction, in sealing spherical surface body 44 and ball seat 41, it is connected between pipe sleeve 42 by connection structure 43, wherein connection structure 43 supports the sealing spherical surface body 44 of 4 China of spool, close Envelope spherical surface body 44 can be rotated with the rotation of valve rod 2, and center of rotation is the center of valve rod 2, it is possible to understand that in this valve body 3 In the case where opening, valve rod 2 drives spool 4 and valve seat 5 to interlock, and liquid can be flowed out by spool 4 and valve seat 5 from water outlet. When rotation valve rod 2, valve rod 2 is rotated with movable valve plug 4, and valve rod 2 is moved on valve seat 5 with movable valve plug 4 at this time, valve seat 5 and spool 4 Cooperate 5 left side of closed valve seat, so that water is truncated from valve seat 5 and sealing 44 contact surface of spherical surface body.Such as Fig. 2 as can be seen that 3 axis of valve body To the longitudinal center line eccentric setting of center line and valve rod 2, and the center line coplanar orthogonal with overcurrent chamber, spool 4 can be by valve rods 2 It drives rotation and cooperates closing overcurrent chamber cross section with valve seat 5.Valve seat 5 is mounted on valve body 3, i.e., seals in valve seat 5 and spool 4 The closed process of spherical surface body 44 and bigoted setting, valve seat 5 and spool 4 is almost to complete moment.

As shown in Fig. 2, between valve body center line L1 and valve rod center line L2, there are eccentric distance es.

As shown in figure 3, support construction 7 includes support column and axle sleeve 73, support column includes the support column being fixed in valve body 3 First segment 71 is less than support column first segment with the intracavitary support column second segment 72 of overcurrent, the diameter of support column second segment 72 is extend into 71 diameter, axle sleeve 73 are sleeved on support column second segment 72, and pipe sleeve 42 is sleeved on 73 outer ring of axle sleeve.It is supported in support construction 7 The cooperation of column and pipe sleeve 42, so that sufficient water lubrication can be obtained in the rotation of pipe sleeve 42 on the support columns.Support column second segment 72 Lubrication can be achieved between axle sleeve 73, axle sleeve 73 and pipe sleeve 42 and relatively rotate.

The lower end of 72 outer ring surface of support column second segment is equipped with the annular shaft shoulder 74, and 42 lower end surface of pipe sleeve is connected on the shaft shoulder 74 Side.Rounded corner between the outer ring surface of the shaft shoulder 74 and the top surface of the shaft shoulder 74, so that rotation between pipe sleeve 42 and axle sleeve 73 will not be by Interference.

As shown in figure 4, being equipped with the first sealing ring 52 between valve body 3 and valve seat 5.So that water will not be from valve body 3 and valve seat 5 Junction outflow.

5 water outlet of valve seat is equipped with step structure, and 5 water outlet of valve seat is additionally provided with positioning ring, and valve seat 5 is installed in Step-edge Junction Between structure and positioning ring.This structure facilitates the installation of valve seat 5, i.e., by valve seat 5 is corresponding be mounted at step structure after, then exist Positioning ring is installed, the installation of valve seat 5 can be realized.

The surface that valve seat 5 is contacted with positioning ring is positioning surface, and valve seat 5 is located at the folder between the surface in flowing to and positioning surface Angle is chamfering structure, i.e., outer transition face 53.So that 5 chamfering structure of valve seat will not interfere with water flow, so that the water flow of water outlet is thrown away For current stabilization state.

Spool 4 includes connection valve rod 2 and the connection structure 43 for sealing spherical surface body 44, which is hollow sphere A part.This 43 stable structure of connection structure, support force is enough, and has the characteristics that lighter in weight.

Eccentric half-ball valve further includes driving device 1, which is the tooth for increasing 2 driving torque of driving stem Wheel group.Driving device 1 is gearbox gear group.

Sealing structure 6 includes the second sealing ring 62 being arranged between valve rod 2 and valve body 3, at 62 top of the second sealing ring Filler material 61 is arranged in place between valve deck.

The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality It, in specific embodiments and applications can be with many changes may be made, as long as these variations are without departing from this with novel thought The design of utility model, belongs to the protection scope of the utility model.

Claims (8)

1. eccentric half-ball valve, it is characterised in that: including

Valve body, internal to have overcurrent chamber, body top opens wide, and valve body wall is equipped with the water inlet being connected to flowing hole and goes out The mouth of a river；

Valve deck is enclosed in body top and opens wide place；

Valve rod is deep into overcurrent chamber across valve deck；

Spool is connected to valve rod and is located in overcurrent chamber, which has hemispheric sealing spherical surface body；

Valve seat is arranged in valve body water outlet position；

The longitudinal center line eccentric setting of the valve body longitudinal center line and the valve rod, and it is coplanar with the center line of overcurrent chamber vertical Directly, the spool can be driven from valve rod rotation and with overcurrent chamber cross section, the valve body and the valve are closed the valve seat with The surface that core seals spherical surface body cooperation has hard alloy layer；

The bottom interior wall of the valve body overcurrent chamber is equipped with support construction, and the spool lower end is equipped with pipe sleeve, which is sleeved on branch On support structure, and pipe sleeve can be rotated along the outer ring surface of support construction.

2. eccentric half-ball valve according to claim 1, it is characterised in that: the support construction includes support column and axle sleeve, The support column includes being fixed on the intracorporal support column first segment of valve and extending into the intracavitary support column second segment of overcurrent, support column The diameter of second segment is less than the diameter of support column first segment, and the axle sleeve is sleeved on support column second segment, the pipe sleeve suit In axle sleeve outer ring.

3. eccentric half-ball valve according to claim 2, it is characterised in that: the lower end of the support column second segment outer ring surface is set There is the annular shaft shoulder, the pipe sleeve lower end surface is connected to above the shaft shoulder.

4. eccentric half-ball valve according to claim 1, it is characterised in that: be equipped with the first sealing between the valve body and valve seat Circle.

5. eccentric half-ball valve according to claim 1, it is characterised in that: the valve seat water outlet is equipped with step structure, Valve seat water outlet is additionally provided with positioning ring, and the valve seat is installed between step structure and positioning ring.

6. eccentric half-ball valve according to claim 5, it is characterised in that: the surface that the valve seat is contacted with positioning ring is fixed Plane, the angle that the valve seat is located between the surface in flowing to and positioning surface is chamfering structure.

7. eccentric half-ball valve according to claim 1, it is characterised in that: the spool includes connection valve rod and sealing spherical surface The connection structure of body, the connection structure are a part of hollow sphere.

8. eccentric half-ball valve according to claim 1, it is characterised in that: the eccentric half-ball valve further includes driving device, The driving device is the gear set for increasing driving stem driving torque.