Three-way control valve
Technical field
This utility model relates to a kind of three-way control valve.
Background technology
Existing threeway control valve for fluids on market, structure is relative complex, and price is relatively costly.And due to fluid pressure difference
Greatly, cause the structure impact force such as spool, valve seat big and deform, had a strong impact on the service life of control valve.
Utility model content
The utility model proposes a kind of three-way control valve, effectively reduce the impulsive force that control valve parts are caused by fluid, solve
The problem that the structures such as spool of determining are deformed the control valve service life reduction caused by the impulsive force of fluid.
The technical solution of the utility model is achieved in that
Three-way control valve, including upper valve body, lower valve body and the bonnet, being connected to described upper valve body top, described upper valve body
And between described lower valve body, lower valve base is installed, in described upper valve body, is positioned at described lower valve base is arranged above upper valve base, institute
State and bottom spool is installed on lower valve base, described upper valve base is provided with upper valve core, connects between described upper valve core and described bottom spool
Being connected to valve rod, the upper end of described valve rod is connected with described upper valve core, and the lower end of described valve rod is connected with described bottom spool, described on
Spool upper end is provided with polished rod, and described polished rod penetrates in described bonnet, is provided with filler between described bonnet, and described polished rod.
Preferably, described upper valve core and described bottom spool are tubular structure.
Preferably, described upper valve core and described bottom spool side are equipped with sieve aperture.
Further, described upper valve core is externally provided with sleeve and fairlead.
Further, it is equipped with the first graphite wound gasket between described lower valve base and described lower valve body and described upper valve body;
The second graphite wound gasket it is provided with between described upper valve base and described upper valve body.
Further, filler set it is provided with between polished rod and the described bonnet, on described upper valve core, bottom described filler set
And it is provided with the 3rd graphite wound gasket between described bonnet, is provided with O between described filler set side and described bonnet, institute
Stating and be provided with described filler between polished rod and described filler set, be provided with filler heelpiece below described filler, described filler is arranged over
Gland, described gland top is provided with dust ring.
Preferably, described filler includes that two piece of first filler and three piece of second filler, described three piece of second filler are positioned at institute
State between two piece of first filler.
The beneficial effects of the utility model are:
Processing is simple;Need not separately join special tool(s) just can install easily, dismantle.Valve seat and the special of valve body set
Meter, reduces fluid impingement force, effectively avoids the problem that three-way control valve needs often to change spool.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the new three-way control valve described in embodiment of this practicality;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the assembling schematic diagram of the three-way control valve described in this utility model embodiment and actuator.
In figure:
1, M20 nut, 2, M20 stud, the 3, first graphite wound gasket, 4, lower valve base, 5, upper valve body, 6, upper valve base,
7, sleeve, 8, polished rod, 9, bonnet, 10, filler heelpiece, 11, locking nut, 12, dust ring, 13, gland, 14, first
Filler, 15, filler set, the 16, second filler, 17, O, the 18, the 3rd graphite wound gasket, 19, fairlead, 20, taper pin, 21,
Two graphite wound gaskets, 22, upper valve core, 23, valve rod, 24, bottom spool, 25, lower valve body, 26, steel ball, 27, hex nut, 28, lock
Jack panel, 29, actuator.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
As Figure 1-3, the three-way control valve described in this utility model embodiment, including upper valve body 5, lower valve body 25 and company
It is connected on the bonnet, 9 at described upper valve body 5 top, between described upper valve body 5 and described lower valve body 25, lower valve base 4 is installed, in institute
It is positioned at described lower valve base 4 in stating upper valve body 5 and is arranged above upper valve base 6, described lower valve base 4 is provided with bottom spool 24, described
Being provided with upper valve core 22 on upper valve base 6, connecting between described upper valve core 22 and described bottom spool 24 has valve rod 23, described valve rod 23
Upper end be connected with described upper valve core 22, the lower end of described valve rod 23 is connected with described bottom spool 24, described upper valve core 22 upper end
Being provided with polished rod 8, described polished rod 8 penetrates in described bonnet, 9, is provided with filler between described bonnet, 9 and described polished rod 8.
In this example, described upper valve core 22 and described bottom spool 24 are tubular structure.
In this example, described upper valve core 22 and described bottom spool 24 side are equipped with sieve aperture.
The employing lower end sieve mesh type tubular structure of spool, thus avoid the fluid impulsive force directly to valve rod.And spool
Use the design (upper valve core and bottom spool) that two cylinder-symmetrical are installed, when one tubular spool of fluid impact can produce one
Planting outbreak and firmly act on another tubular spool, the force direction on two spools is contrary, makes the power of whole spool mutually support
Disappear, again reduce the fluid impulsive force to valve body.This valve rod valve core inside regulation flow design, simple in construction, and
Effectively avoid the impulsive force of fluid, thus substantially increase the service life of high pressure difference limen.
Further, in this example, described upper valve core 22 is externally provided with sleeve 7 and fairlead 19.Fairlead plays guiding and lubrication
Effect.
Further, in this example, between described lower valve base 4 and described lower valve body 25 and described upper valve body 5, it is equipped with first
Graphite wound gasket 3;The second graphite wound gasket 21 it is provided with between described upper valve base 6 and described upper valve body 5.
Further, in this example, between polished rod 8 and the described bonnet, 9 on described upper valve core 22, it is provided with filler set 15, institute
State filler set 15 bottom and described bonnet, 9 between be provided with the 3rd graphite wound gasket 18, described filler overlap 15 sides with described on
It is provided with O 17 between valve gap 9, is provided with described filler between described polished rod 8 and described filler set 15, is provided with below described filler
Filler heelpiece 10, described filler is arranged over gland 13, and described gland 13 top is provided with dust ring 12, described filler
Including two piece of first filler 14 and three piece of second filler 16, described three piece second fill out 16 material be positioned at described two piece of first filler 14 it
Between.Filler can play good lubrication and sealing function.
Concrete assemble sequence is as follows:
Operation one:
Pick up upper valve core, valve rod is screwed into inside upper valve core.
Operation two:
Join the cylinder pin hole beaten on valve rod according to hole reserved on upper valve core, after having beaten hole, straight pin pounded after in hand-hole,
Straight pin is solded in upper valve core, thus ensures that upper valve core and valve rod do not have loosening situation after working long hours.On
After spool and valve rod have assembled, place on one side, give over to follow-up use.
Operation three:
Upper valve body side is put, allows left and right flange be placed on mounting platform, inside upper valve body, put into the second graphite wound gasket, then
Put into upper valve base.
Operation four:
In the opposite side of upper valve body, put into the first graphite wound gasket, place into lower valve base.
Operation five:
Put into bottom spool, and through the most mounted upper valve core and valve rod, tighten locking nut.
Operation six:
After putting into the first graphite wound gasket, put lower valve body, tighten stud.Make lower valve base compress the first graphite to be wound around
Pad, and lower valve body.
Operation seven:
Vertically lay after mounted valve body (upper valve body and lower valve body) is turned 45 °, put into sleeve.
Operation eight:
Pick up bonnet, pound into fairlead, after installing, bonnet, be placed on upper valve body, with locking nut screwing,
Make bonnet, on clamp sleeve.
Operation seven:
Along the polished rod on upper valve core, putting into the 3rd graphite wound gasket, filler puts after putting into O and is screwed into bonnet,
In.
Operation eight:
Being sequentially placed into 5 blocks of fillers, two ends are 2 piece of first filler, and centre is 3 piece of second filler.It is screwed into gland, makes to fill out
Material gland compresses 5 blocks of fillers.
Operation nine:
Putting into dust ring on gland, and tighten locking nut, assembling completes.
In sum: this utility model uses cylindrical porous spool design, reduces the fluid impulsive force to spool, use
The design of symmetrical spool, uses the impulsive force of fluid, counteracts the segment fluid flow impulsive force to whole valve body, thus improve valve
The service life of body.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Within the spirit of utility model and principle, any modification, equivalent substitution and improvement etc. made, should be included in this utility model
Protection domain within.