A kind of angle-style self-sealing decompression regulating valve
Technical field
The present invention relates to a kind of regulating valve more particularly to a kind of angle-style self-sealing decompression regulating valves.
Background technique
Angular septum valve is for regulating valve in high pressure or High Pressure Difference, the severe service item for having serious cavitation, erosion
The product that the serious problems such as the part lower service life is short, valve rod easy fracture, bushing are easy to fall off are developed.It is shared using throttling form
Pressure difference reduces cavitation erosion, erosion, flow disturbing destruction, substantially increases the service life of regulating valve.Valve body is square, and valve plug is
Sleeve stable steering can avoid out-of-balance force excessive phenomena such as not opening, being not closed completely.Existing angle type control valve often by
It is excessive in Fluid pressure, antihypertensive effect is bad, generate cavitation and noise.But existing angle type control valve is often due to fluid pressure
Power is excessive, antihypertensive effect is bad, generates cavitation and noise.
Summary of the invention
The object of the present invention is to provide a kind of angle-style self-sealing decompression regulating valves, are able to carry out self-sealing and can adapt to
Multilevel decompression under high temperature and pressure.
Provide following technical solution: a kind of angle-style self-sealing decompression regulating valve, including valve body, valve deck and valve rod, valve rod
Lower end be provided with valve plug, the side and bottom of valve body are respectively arranged with inlet and liquid outlet, it is characterised in that: described
Valve cover portion is placed in valve body and it is disposed with pendant collet, gasket and seal bond from top to bottom between valve body, valve deck
Outside is provided with the end cap for valve deck to be fixedly connected on to valve body;The valve deck lower end is fixedly installed down block, institute
Fixed block for fixing down block is set between the down block stated and valve deck, and the down block includes tubulose knot
The stream cover of structure lower and is connected to valve body positioned at the decompression component of stream cover lower end and structure annular in shape, positioned at decompression
It is threadedly coupled on the pedestal of inner cavity lower end, the fixed block and body cavity and is butted on stream cover upper surface, the valve
It plugs the movable setting above and below the stream cover of down block and the inner wall of decompression component and realizes unlatching and closed, described decompression
Component includes the hypertension pill of several superpositions, and the hypertension pill is arranged at intervals with the identical depressor area of area on its periphery
And aerial drainage area, several decompression holes are provided on depressor area, and aerial drainage area is the engraved structure being arranged on hypertension pill, several drops
The quantity of tabletting its decompression hole from top to bottom is sequentially reduced, and the depressor area of two neighboring hypertension pill and the dislocation of aerial drainage area stack, institute
The stream stated, which covers, is provided with the decompression metering orifice for passing through decompression hole on upper end face corresponding with down block.
The present invention is further arranged to, and one section is arranged on the lateral wall of the valve plug and is less than the pre- of its periphery ontology
Face is stayed, forms gap between reserved face and down block.
The present invention is further arranged to, and gasket and sealing are provided between the fixed block and the upper surface for flowing cover
Key.
The present invention is further arranged to, the described stream cover it is upper be provided on the circumferential side wall of inlet corresponding position and
The guiding surface extended inwardly downwards.
The present invention is further arranged to, and is provided with several recirculation holes on the circumferential side wall for flowing cover.
The invention has the following beneficial effects: pendant collet, gasket and seal bond, Neng Goubao are provided between valve deck and end cap
The self-sealing of valve deck to be demonstrate,proved, guarantees that valve deck junction will not generate leakage, fluid enters from inlet, when by down block,
Multilevel decompression can be passed through, valve plug can be realized the adjusting to valve body flow during up and down motion, and down block exists
During from top to bottom, since the quantity of the decompression hole of hypertension pill from top to bottom gradually decreases, the drop of precise treatment can be realized
Pressure adjustment, the decompression change rate of valve plug are curvilinear structures.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of regulating valve in the present embodiment;
Fig. 2 is the structural schematic diagram of down block in the present embodiment;
Fig. 3 a is the structural schematic diagram that cover vertical direction cross-sectional view is flowed in the present embodiment;
Fig. 3 b is the structural schematic diagram of cross-sectional view in the present embodiment;
Fig. 4 a, 4b, 4c, 4d are respectively the structural schematic diagram of multilevel decompression piece.
Figure label meaning is as follows: 1- valve body;11- inlet;12- liquid outlet;2- valve deck;21- pendant collet;22- gasket;
23- seal bond;3- end cap;4- fixed block;5- down block;51- flows cover;51a- recirculation hole;51b- is depressured metering orifice;51c-
Guiding surface;52- is depressured component;52a- depressor area;52b- aerial drainage area;521- hypertension pill;522- decompression hole;53- pedestal;54-
Lantern ring;6- valve rod;7- valve plug;71- reserves face.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
As shown in Fig. 1,2 and Fig. 3 a, 3b, a kind of angle-style self-sealing decompression regulating valve, including valve body 1, valve deck 2 and valve rod 6,
The lower end of valve rod 6 is provided with valve plug 7, and the side and bottom of valve body 1 are respectively arranged with inlet 11 and liquid outlet 12, valve deck 2
It is partially disposed in valve body 1 and it is disposed with pendant collet 21, gasket 22 and seal bond 23, valve from top to bottom between valve body 1
The outside of lid 2 is provided with the end cap 3 for valve deck 2 to be fixedly connected on to valve body 1;2 lower end of valve deck is fixedly installed down block
5, the fixed block 4 for fixing down block 5 is set between the down block 5 and valve deck 2, and the down block 5 is wrapped
The stream cover 51 of tubular structure is included, the decompression component 52 of 51 lower ends and structure annular in shape is covered positioned at stream, is located at decompression component
It is threadedly coupled and supports on 52 lower ends and the pedestal 53 for being connected to 1 inner cavity lower end of valve body, the fixed block 4 and 1 inner cavity of valve body
Yu Junliu covers 51 upper surfaces, and the inner wall of stream cover 51 and decompression component 52 that the valve plug 7 is placed in down block 5 can live up and down
Dynamic setting, which is realized, opens and closed.
As shown in Fig. 4 a, 4b, 4c, 4d, in the present embodiment, down block 5 includes the hypertension pill 521 of several superpositions, institute
The hypertension pill 521 stated is arranged at intervals on the identical depressor area 52a of area and aerial drainage area 52b, depressor area 52a on its periphery
Several decompression holes 522 are provided with, aerial drainage area 52b is the engraved structure being arranged on hypertension pill 521, several hypertension pills 521
The quantity of its decompression hole 522 is sequentially reduced from top to bottom, depressor area 52a and aerial drainage area the 52b dislocation of two neighboring hypertension pill 521
It stacks.On stream cover 51 be provided on the circumferential side wall of 11 corresponding position of inlet and the guiding surface that extends inwardly downwards
51c can be suitable for using under hyperbaric environment, and fluid passes through down block 5, and the setting of guiding surface 51c can slow down fluid
To the compression shock of stream cover 51, the drop for passing through decompression hole 522 is provided on end face corresponding with down block 5 on stream cover 51
Metering orifice 51b is pressed, then fluid can pass through decompression portion after being depressured metering orifice 51b after reaching the side wall of stream cover 51
Part 52 realizes decompression, after eventually arriving at its inside circumference, is discharged from liquid outlet 12.The periphery of decompression component 52 is also welded with
It is socketed on the lantern ring 54 of each hypertension pill 521, lantern ring 54 is for being sealed the outside of hypertension pill 521.
One section of reserved face 71 for being less than its periphery ontology is set in the present embodiment, on the lateral wall of the valve plug 7,
Gap is formed between reserved face 71 and down block 5, enables this valve to be suitable for working under hot environment, valve plug 7 under high temperature
Between down block 5.
In the present embodiment, gasket is provided between fixed block 4 and the upper surface of stream cover 51 and seal bond (omits in attached drawing
Mark), the fixing seal before capable of guaranteeing the inner cavity of down block 5 and valve body 1 cooperates.
In the present embodiment, be provided with several recirculation holes 51a on the circumferential side wall of stream cover 51, when valve deck 2 gradually up
During movement, the setting of recirculation hole 51a can be realized convenient for regulating valve directly circulates, and valve is in non-decompression shape at this time
State.
The invention has the following beneficial effects: pendant collet 21, gasket 22 and seal bond are provided between valve deck 2 and end cap 3
23, it can guarantee the self-sealing of valve deck 2, guarantee that 2 junction of valve deck will not generate leakage, fluid enters from inlet 11, passing through
When crossing down block 5, multilevel decompression can be passed through, valve plug 7 can be realized during up and down motion to 1 flow of valve body
Adjust, and down block 5 is during from top to bottom, due to the decompression hole 522 of hypertension pill 521 from top to bottom quantity gradually
It reduces, can be realized the decompression adjustment of precise treatment, the decompression change rate of valve plug 7 is curvilinear structures.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, above-mentioned hypothesis these
Improvement and modification also should be regarded as protection scope of the present invention.