CN104358885B - High-pressure difference and high-flow rate adjustable ratio control valve - Google Patents
High-pressure difference and high-flow rate adjustable ratio control valve Download PDFInfo
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- CN104358885B CN104358885B CN201410614797.4A CN201410614797A CN104358885B CN 104358885 B CN104358885 B CN 104358885B CN 201410614797 A CN201410614797 A CN 201410614797A CN 104358885 B CN104358885 B CN 104358885B
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- 238000007789 sealing Methods 0.000 claims abstract description 46
- 239000000945 filler Substances 0.000 claims description 34
- 210000004907 gland Anatomy 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 230000008676 import Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a high-pressure difference and high-flow rate adjustable ratio control valve. A valve base is arranged in a valve cavity of a valve body; a valve core mounting hole is formed in the valve base; a valve cover is fixedly arranged on the top of the valve body in a sealing way; a sleeve is arranged in the valve cavity and is arranged above the valve base; a big valve core is moveably arranged in an inner hole of the sleeve and the valve core mounting hole of the valve base; the upper part of the big valve core is connected with a valve core sleeve; a valve rod penetrates through the valve cover; the lower end of the valve rod is connected with the big valve core; a valve core upper cavity and a valve core through hole are formed in the big valve core; the lower end of the valve rod penetrates through the valve core sleeve to be inserted into the valve core upper cavity and the valve core through hole; a driving sheet is arranged on the part, positioned in the valve core upper cavity, of the valve rod; a small valve core integrated with the valve rod is connected to the lower end of the valve rod and is arranged in the valve core through hole. The ratio control valve is characterized in that two or more threaded flowing passages with different start points are arranged on the small valve core and are provided with a plurality of cross points. The ratio control valve is novel in structure and can resist high temperature and high pressure difference, wide-range flow control can also be realized, and an adjustment curve is good.
Description
Technical field
The present invention relates to a kind of High Pressure Difference high-flow adjustable ratio control valve, belong to valve processing and manufacturing technical field.
Background technology
With the increasingly raising of industrial automation level, the flow-control of wide scope has become as a kind of development trend.And
The working environment of control valve is also more and more severe now, and sometimes control valve is required in High Pressure Difference, high temperature, big regulating ratio etc.
Use under harsh operating mode.But the control valve generally existing of current domestic production can not high temperature resistant, High Pressure Difference it is impossible to realize wide scope
Flow-control, the shortcomings of adjustment curve difference, mostly the control valve using under the harshness operating mode such as High Pressure Difference, high temperature, big regulating ratio is
Depend on import.
For the occasion of above harshness operating mode, particularly boiler feedwater application scenario, general all using unit and designing institute
Using inlet control valve, on the one hand because having High Temperature High Pressure, the regulation of the big regulating ratio of wide scope flow-control especially High Pressure Difference
Require；On the other hand because position is important, properties of product have high demands.But even external valve producer does not have new structure yet
Valve can meet High Pressure Difference, the requirement of the big regulating ratio of flow simultaneously, on the one hand big regulating ratio purely can not meet High Pressure Difference
Require；On the other hand select high pressure difference limen not enable wide scope flow-control, so domestic use unit typically all selects again
More reliable import high-pressure multistage step-down formula telescoping valve, but this valve is very poor for wide flow-control, in the range of low discharge
Substantially cannot adjust.Or select external needle-valve, but this valve is short for High Pressure Difference service life, need to often change valve element with
Meet to adjust and require, this mean that must standing valve element, considerably increase use cost, also extreme influence production line is being just simultaneously
Often run.Also have and be used in conjunction with using two deck valves, realize Staged cotrol principle, or one regulation of a blood pressure lowering, so both unrestrained
Take great amount of cost, control the complicated demand for development being difficult to adaptation new technology again.And even imported product, also occurring makes
With short life, noise is big, the problems such as range of accommodation is limited, so domestic a lot of use unit has strong expectation at home can
Enough buy the product replacing import.
In order to break the monopoly position of overseas enterprise, also for the domestic technique level improving this occasion lower valve, same
When also quickly enter this high-end field for my company, my company, through creative design, have developed a kind of High Pressure Difference flow
Big adjustable control valve, so that unborn problem thoroughly eliminates, fundamentally solves big regulating ratio high differential pressure control valve
Use requirement, had both met above working condition requirement, reduces whole machine cost again, also extends the service life of valve simultaneously.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, provide a kind of High Pressure Difference flow big regulating ratio control
Valve processed, it passes through novel structure design and can meet onsite application well to require, can high temperature resistant, High Pressure Difference, enable again
Wide scope flow-control, and adjustment curve is good, instead of import completely.
According to the present invention provide technical scheme: High Pressure Difference high-flow adjustable ratio control valve, including valve body, valve gap, valve rod,
Valve seat, sleeve, big valve core and valve core housing, are provided with valve pocket in described valve body, valve seat is contained in valve pocket, and valve seat passes through in valve body valve pocket
Step support, the contact site of valve seat and valve body is in be tightly connected, and valve seat is provided with valve element installing hole, and described valve gap is fixed close
Envelope is arranged on body top；Described sleeve is contained in valve pocket and is placed in above valve seat, and sleeve top is offseted with valve gap bottom, set
Cylinder bottom is offseted with valve seat top, and sleeve perisporium is evenly arranged with several through holes；Described big valve core activity is assemblied in sleeve
Endoporus and the valve element of valve seat in the hole is installed, big valve core top connects valve core housing, the periphery wall of valve core housing and the inner hole wall of sleeve
Sealing is slidably matched, and big valve core bottom outer wall is slidably matched with the valve element installing hole inner wall sealing of valve seat；Described valve rod passes through valve
Lid, utilizes sealing structure to seal, valve rod lower end is connected with big valve core, and valve rod is cased with compressive state between valve rod and valve gap
Holddown spring, holddown spring upper end is connected with valve gap, and holddown spring lower end is pressed on valve core housing；Described valve body is provided with medium and enters
Mouth and media outlet, media outlet is connected with valve seat installing hole lower end, and medium inlet is connected with valve seat and cartridge exterior space；Institute
State and in big valve core, be provided with valve element epicoele and valve core through hole, valve element epicoele and valve core through hole are interconnected and axially through big valve core；
Described valve rod lower end passes through in valve core housing insertion valve element epicoele and valve core through hole, and the part that valve rod is located at intracavity on valve element is provided with drive
Moving plate, described driving piece periphery wall and valve element epicoele inner wall sealing are slidably matched；Described valve rod lower end is connected with and is integrally set with it
The small valve core put, described small valve core is contained in valve core through hole, and small valve core periphery wall is slidably matched with valve core through hole inner wall sealing；Its
It is characterised by: described small valve core is provided with two or more the screw thread runner with different starting points, described a plurality of spiral shell
Stricture of vagina runner has multiple cross points.
As a further improvement on the present invention, the pitch of described a plurality of screw thread runner is identical.
As a further improvement on the present invention, the bottom of described big valve core is provided with valve element cavity of resorption, described valve element cavity of resorption interior
Footpath is more than the internal diameter of valve core through hole, and the perisporium of valve element cavity of resorption has been uniformly arranged multiple through holes.
As a further improvement on the present invention, described valve seat bottom face is provided with valve base sealing annular groove, in valve base sealing ring
It is provided with valve washer in groove；Described valve gap bottom face is provided with valve bonnet seal annular groove, is provided with valve gap pad in valve bonnet seal annular groove
Circle.
As a further improvement on the present invention, described valve washer and valve gap packing ring are all using winding packing ring.
As a further improvement on the present invention, described valve gap is provided with the position of holddown spring tip contact and compresses bullet
The upper locating slot that spring diameter dimension matches, described holddown spring bottom embeds in upper locating slot；Described valve core housing top is provided with
The positioning ring groove matching with holddown spring diameter dimension, described holddown spring bottom embeds in positioning ring groove.
As a further improvement on the present invention, it is threaded connection cooperation, valve core housing between described valve core housing and big valve core
Position can turn adjustment.
As a further improvement on the present invention, described sealing structure includes matrix liner, filler, filler pressing sleeve and filler pressure
Lid, the stem outer circumference in described valve gap is provided with filler, is provided with matrix liner, is provided with filler pressing sleeve above filler, fill out below filler
The gland that material gland passes through to be disposed there above is pushed down, and passes through the second fastening connection piece between described filler gland and valve gap
It is fixedly connected.
As a further improvement on the present invention, described second fastening connection piece includes the second studs, the second hexagonal spiral shell
Mother and disk spring, described second studs lower end is connected on gland, after the second studs upper end passes through gland
It is set with disk spring and spiral shell fills the second hex nut.
As a further improvement on the present invention, described filler gland inwall is provided with interior sealing annular groove, in interior sealing annular groove
Equipped with an o type sealing ring；Described filler gland outer wall is provided with external seal annular groove, and external seal annular groove is close built with the 2nd o type
Seal.
The present invention compared with prior art, has the advantage that
(1) unique design of a plurality of screw thread runner is had on the small valve core of the present invention, a plurality of screw thread runner has as many as possible
Cross point, now just it is considered that in each cross point it is simply that the place of fluid mutually shock, often clashing into the energy of a fluid
Amount will be lost once, and the number of times of shock is more, then the pressure drop of fluid more, along with big valve core and sleeve are equal
It is designed to multi-step pressure reduction structure, just all can achieve opposing High Pressure Difference in total travel.
(2) present invention can realize wide scope flow-control under the big regulating ratio of flow, when flow is little, pressure reduction is big, passes through
Resisting High Pressure Difference, the angle of a plurality of screw thread runner on small valve core and depth can be arbitrarily devised for the structure design of small valve core,
To meet minimum discharge requirement.When small valve core upwardly opens, due to the pressure of spring and medium, meeting zero leakage will for big valve core
Ask, adjust thus without impact low discharge；When small valve core is all turned on, then big valve core and holddown spring is driven to run up,
Now big valve core and sleeve play regulatory role, and big valve core and sleeve all have multiple through holes, and the number of through hole and diameter with
And distribution situation can arbitrarily devised to meet the traffic requirement under different situations.
(3) than pressure, what bottom went out entered in side to the pretension under the use of described preloading spring ensure that big valve core in off position
When flow direction ensure that small valve core is adjusted, big valve core is in strict closed mode.
(4) a large amount of parts in control valve of the present invention can borrow existing mill run, cheap for manufacturing cost.
Brief description
Fig. 1 is the overall structure figure of embodiment of the present invention High Pressure Difference high-flow adjustable ratio control valve.
Fig. 2 is the perspective view of small valve core in Fig. 1.
Fig. 3 is a portion enlarged diagram in Fig. 1.
Fig. 4 is the structural representation of big valve core in Fig. 1.
Fig. 5 is the circumference expanding map at the valve element cavity of resorption position of Fig. 4 bottom.
Fig. 6 is the structural representation of Fig. 1 middle sleeve.
Fig. 7 is the circumference expanding map having through hole position on sleeve.
Description of reference numerals: 1- valve body, 1a- medium inlet, 1b- media outlet, 2- valve gap, 3- small valve core, 3a- screw thread stream
Road, 4- big valve core, 4a- valve element epicoele, 4b- valve core through hole, 4c- valve element cavity of resorption, 5- valve seat, 5a- valve element installing hole, 6- sleeve,
7- holddown spring, 8- valve rod, 8a- drive piece, 9- first hex nut, 10- first studs, 11- matrix liner, 12- to fill out
Material, 13- filler pressing sleeve, 14- gland, 15- second studs, 16- disk spring, 17- second hex nut, 18-
One o type sealing ring, 19- the 2nd o type sealing ring, 20- valve gap packing ring, 21- valve core housing, 22- valve washer.
Specific embodiment
With reference to concrete drawings and Examples, the invention will be further described.
As shown in the figure: the High Pressure Difference high-flow adjustable ratio control valve in embodiment mainly by valve body 1, valve gap 2, small valve core 3,
Big valve core 4, valve seat 5, sleeve 6, holddown spring 7, valve rod 8, the first hex nut 9, the first studs 10, matrix liner 11,
Filler 12, filler pressing sleeve 13, gland 14, the second studs 15, disk spring 16, the second hex nut 17, an o type
Sealing ring 18, the 2nd o type sealing ring 19, valve gap packing ring 20, valve core housing 21 and valve washer 22 etc. form.
As shown in Fig. 1 ~ Fig. 3, in described valve body 1, it is provided with valve pocket, valve seat 5 is contained in valve pocket, valve seat 5 passes through valve body 1 valve pocket
Interior step supports, and valve seat 5 is in be tightly connected with the contact site of valve body 1, and valve seat 5 is provided with valve element installing hole 5a, described valve
Cover 2 fixing seals and be arranged on valve body 1 top；Described sleeve 6 is contained in valve pocket and is placed in above valve seat 5, sleeve 6 top and valve
Cover 2 bottoms to offset, sleeve 6 bottom is offseted with valve seat 5 top, sleeve 6 perisporium is evenly arranged with several through holes；Described big valve
Core 4 activity is assemblied in the endoporus of sleeve 6 and the valve element installing hole 5a of valve seat 5, and big valve core 4 top connects valve core housing 21, valve element
The periphery wall of set 21 is slidably matched with the inner hole wall sealing of sleeve 6, the valve element installing hole 5a of big valve core 4 bottom outer wall and valve seat 5
Inner wall sealing is slidably matched；Described valve rod 8 passes through valve gap 2, utilizes sealing structure to seal, under valve rod 8 between valve rod 8 and valve gap 2
End is connected with big valve core 4, valve rod 8 is cased with the holddown spring 7 in compressive state, holddown spring 7 upper end is connected with valve gap 2, pressure
Tight spring 7 lower end is pressed on valve core housing 21；Described valve body 1 is provided with medium inlet 1a and media outlet 1b, media outlet 1b with
Valve seat installing hole 5a lower end connects, and medium inlet 1a is connected with valve seat 5 and sleeve 6 space outerpace；It is provided with valve in described big valve core 4
Core epicoele 4a and valve core through hole 4b, valve element epicoele 4a and valve core through hole 4b is interconnected and axially through big valve core 4；Described valve rod
8 lower ends pass through in valve core housing 21 insertion valve element epicoele 4a and valve core through hole 4b, and the part that valve rod 8 is located in valve element epicoele 4a is provided with
Drive piece 8a, described driving piece 8a periphery wall and valve element epicoele 4a inner wall sealing are slidably matched；Described valve rod 8 lower end be connected with
The small valve core 3 that it is wholely set, described small valve core 3 is contained in valve core through hole 4b, small valve core 3 periphery wall and valve core through hole 4b inwall
Sealing is slidably matched；Described small valve core 3 is provided with two or more the screw thread runner 3a with different starting points, described
A plurality of screw thread runner 3a has multiple cross points.
As shown in Fig. 1,3,6,7, in the present invention, it is identical that described a plurality of screw thread runner 3a is preferably designed to pitch.Described
The bottom of big valve core 4 is provided with valve element cavity of resorption 4c, and the internal diameter of described valve element cavity of resorption 4c is more than the internal diameter of valve core through hole 4b, valve element cavity of resorption
Multiple through holes have been uniformly arranged on the perisporium of 4c.
As shown in figure 1, passing through tight by the first studs 10 and the first hex nut 9 between described valve gap 2 and valve body 1
Connected fitting is fixedly connected, and the first studs 10 lower end is threaded on valve body 1, and the first studs 10 upper end passes through valve
After lid 2, spiral shell fills the first hex nut 9.
As shown in Figure 1,3, described valve seat 5 bottom face is provided with valve base sealing annular groove, is provided with valve in valve base sealing annular groove
Seat cushion 22；Described valve gap 2 bottom face is provided with valve bonnet seal annular groove, is provided with valve gap packing ring 20 in valve bonnet seal annular groove；This
Sample can ensure that there is more excellent sealing property between valve seat 5, valve gap 2 and valve body 1.Described valve washer 22 and valve gap packing ring 20
Preferably employ winding packing ring.
As shown in figure 1, in the present invention, described valve gap 2 is provided with and holddown spring with the position of holddown spring 7 tip contact
The upper locating slot that 7 diameter dimensions match, described holddown spring 7 bottom embeds in upper locating slot；Described valve core housing 21 top sets
There is the positioning ring groove matching with holddown spring 7 diameter dimension, described holddown spring 7 bottom embeds in positioning ring groove.So may be used
So that holddown spring 7 position is stable, thus improving stability during control valve work.
As shown in Figure 1, Figure 3, in the present invention, between described valve core housing 21 and big valve core 4, it is threaded connection cooperation, valve element
The position of set 21 can turn adjustment.So be conducive to adjusting the stroke of big valve core 4 according to actually used situation, widened this
The bright scope of application.
As shown in Figure 1, Figure 3, in the present invention, described sealing structure is mainly by matrix liner 11, filler 12, filler pressing sleeve 13
Form with gland 14, valve rod 8 periphery in described valve gap 2 is provided with filler 12, is provided with matrix liner 11, fills out below filler 12
It is provided with filler pressing sleeve 13, the gland 14 that filler pressing sleeve 13 passes through to be disposed there above is pushed down, described filler pressure above material 12
It is fixedly connected by the second fastening connection piece between lid 14 and valve gap 2.Described second fastening connection piece is mainly by the second double end spiral shell
Post 15, the second hex nut 17 and disk spring 16 form, and described second studs 15 lower end is connected on gland, second pair
Header stud 15 upper end is set with disk spring 16 after passing through gland 14 and spiral shell fills the second hex nut 17.
As shown in figure 1, in the present invention, described filler gland 13 inwall is provided with interior sealing annular groove, interior sealing annular groove is built-in
There is an o type sealing ring 18；Described filler gland 13 outer wall is provided with external seal annular groove, and external seal annular groove is built with the 2nd o type
Sealing ring 19.A described o type sealing ring 18 is used for improving the sealing between filler pressing sleeve 13 and valve rod 8, described 2nd o type
Sealing ring 19 is used for improving the sealing between filler pressing sleeve 13 and valve gap 2.
The operation principle of the present invention and work process are as follows:
During concrete application, medium flows into from medium inlet 1a, first passes around sleeve 6, then through big valve core 4, eventually passes
A plurality of screw thread runner 3a on small valve core 3, can more intuitively find out from figure, due to having a plurality of screw thread runner on small valve core 3
The particular design of 3a, when, in the case of low discharge, sleeve 6 is far longer than small valve core 3 with the negotiability of big valve core 4, but is situated between
Matter can change flow direction generation turning through sleeve 6 and big valve core 4, arise that energy loss, can play good decompression and making
With.Without sleeve 6 and big valve core 4, medium will directly wash away the screw thread runner 3a on small valve core 3, one side noise meeting
Very big, the screw thread runner 3a service life on another aspect small valve core 3 is not long.Screw thread runner 3a on small valve core 3 has medium flow field
When logical, medium can produce shock in the cross point of two screw thread runner 3a, and the more number of corners in cross point are more, and the number of times of shock is got over
Multi-energy loss is bigger, so sleeve 6, big valve core 4 and small valve core 3 can resist most pressure drop, greatly realizes opposing high
Pressure reduction.
Figure it is seen that the screw thread runner 3a on small valve core 3 in the present invention can design arbitrarily different angles, depth
And different strokes, realize minimum discharge and require.Can be seen that when small valve core 3 upwardly opens from Fig. 1 and Fig. 3, big valve core
4 due to the pressure by holddown spring 7 and medium, can meet zero leakage requirement, adjusts thus without impact low discharge；When little valve
When core 3 is all turned on, then holddown spring 7 is driven to run up, now big valve core 4 and sleeve 6 play regulatory role, big valve core 4 He
Multiple through holes [as shown in Fig. 4 ~ Fig. 7] are all had on sleeve 6, and the number of through hole and diameter and distribution situation can arbitrarily set
Meter, to meet the traffic requirement under different situations.It can be seen that, big valve core 4 and sleeve 6 are capable of adjustable under big flow, small valve core 3
It is capable of adjustable under low discharge, flow adjustment range width after synthesis, realize size equal flow scalable.
Claims (2)
1. High Pressure Difference high-flow adjustable ratio control valve, including valve body (1), valve gap (2), valve rod (8), valve seat (5), sleeve (6), big
Valve element (4) and valve core housing (21), are provided with valve pocket in described valve body (1), valve seat (5) is contained in valve pocket, and valve seat (5) passes through valve body
(1) step in valve pocket supports, and valve seat (5) is in be tightly connected with the contact site of valve body (1), and valve seat (5) is provided with valve element peace
Dress hole (5a), described valve gap (2) fixing seal is arranged on valve body (1) top；Described sleeve (6) is contained in valve pocket and is placed in valve
Above seat (5), sleeve (6) top is offseted with valve gap (2) bottom, and sleeve (6) bottom is offseted with valve seat (5) top, sleeve (6) week
Several through holes are evenly arranged with wall；The activity of described big valve core (4) is assemblied in the endoporus of sleeve (6) and the valve element of valve seat (5)
In installing hole (5a), big valve core (4) top connects valve core housing (21), the inner hole wall of the periphery wall of valve core housing (21) and sleeve (6)
Sealing is slidably matched, and big valve core (4) bottom outer wall is slidably matched with valve element installing hole (5a) inner wall sealing of valve seat (5)；Described
Valve rod (8) passes through valve gap (2), utilizes sealing structure sealing, valve rod (8) lower end and big valve core between valve rod (8) and valve gap (2)
(4) connect, valve rod (8) is cased with the holddown spring (7) in compressive state, holddown spring (7) upper end is connected with valve gap (2), pressure
Tight spring (7) lower end is pressed on valve core housing (21)；Described valve body (1) is provided with medium inlet (1a) and media outlet (1b), is situated between
Matter outlet (1b) is connected with valve seat installing hole (5a) lower end, and medium inlet (1a) is connected with valve seat (5) and sleeve (6) space outerpace
Logical；It is provided with valve element epicoele (4a) and valve core through hole (4b), valve element epicoele (4a) and valve core through hole (4b) phase in described big valve core (4)
Intercommunicated and axially through big valve core (4)；Described valve rod (8) lower end passes through valve core housing (21) insertion valve element epicoele (4a) and valve element
In through hole (4b), the part that valve rod (8) is located in valve element epicoele (4a) is provided with driving piece (8a), described driving piece (8a) periphery wall
It is slidably matched with valve element epicoele (4a) inner wall sealing；Described valve rod (8) lower end is connected with the small valve core (3) being wholely set with it,
Described small valve core (3) is contained in valve core through hole (4b), and small valve core (3) periphery wall is slided with valve core through hole (4b) inner wall sealing and joins
Close；Described sealing structure includes matrix liner (11), filler (12), filler pressing sleeve (13) and gland (14), described valve gap
(2) valve rod (8) periphery in is provided with filler (12), is provided with matrix liner (11) below filler (12), and filler is provided with above (12)
Filler pressing sleeve (13), the gland (14) that filler pressing sleeve (13) passes through to be disposed there above is pushed down, described filler gland (14)
It is fixedly connected by the second fastening connection piece between valve gap (2)；
It is characterized in that: described small valve core (3) is provided with the screw thread runner (3a) with different starting points of more than two, and described two
Screw thread runner (3a) more than bar has multiple cross points；
The pitch of the screw thread runner (3a) of described more than two is identical；The bottom of described big valve core (4) is provided with valve element cavity of resorption (4c),
The internal diameter of described valve element cavity of resorption (4c) is more than the internal diameter of valve core through hole (4b), the perisporium of valve element cavity of resorption (4c) has been uniformly arranged many
Individual through hole；
Described second fastening connection piece includes the second studs (15), the second hex nut (17) and disk spring (16), institute
State the second studs (15) lower end to be connected on gland, the second studs (15) upper end is set with afterwards through gland (14)
Disk spring (16) spiral shell fills the second hex nut (17)；
Described valve seat (5) bottom face is provided with valve base sealing annular groove, is provided with valve washer (22) in valve base sealing annular groove；Described
Valve gap (2) bottom face is provided with valve bonnet seal annular groove, is provided with valve gap packing ring (20) in valve bonnet seal annular groove；
Described valve washer (22) and valve gap packing ring (20) are all using winding packing ring.
2. High Pressure Difference high-flow adjustable ratio control valve as claimed in claim 1 it is characterised in that: in described filler gland (13)
Wall is provided with interior sealing annular groove, and interior sealing annular groove is built with o type sealing ring (18)；Set on described filler gland (13) outer wall
There is external seal annular groove, external seal annular groove is built with the 2nd o type sealing ring (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614797.4A CN104358885B (en) | 2014-11-04 | 2014-11-04 | High-pressure difference and high-flow rate adjustable ratio control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614797.4A CN104358885B (en) | 2014-11-04 | 2014-11-04 | High-pressure difference and high-flow rate adjustable ratio control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104358885A CN104358885A (en) | 2015-02-18 |
| CN104358885B true CN104358885B (en) | 2017-01-25 |
Family
ID=52526176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410614797.4A Active CN104358885B (en) | 2014-11-04 | 2014-11-04 | High-pressure difference and high-flow rate adjustable ratio control valve |
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| CN105134984B (en) * | 2015-10-16 | 2017-11-14 | 吴忠仪表有限责任公司 | Low-flow high-pressure-difference double helix decompression control valve |
| CN105909803A (en) * | 2016-04-21 | 2016-08-31 | 杭州艾诺流体控制仪表有限公司 | Tapered thread type micro-flow regulating valve |
| CN108317298A (en) * | 2018-03-04 | 2018-07-24 | 江苏江进泵业有限公司 | Low leakage pilot-operated type single-seat adjusting valve spool |
| CN108426075A (en) * | 2018-03-21 | 2018-08-21 | 江苏大学 | A kind of big regulating ratio High Pressure Difference sleeve adjusting valve |
| CN109654242A (en) * | 2019-02-19 | 2019-04-19 | 成都乘风阀门有限责任公司 | High-pressure angle type throttle valve |
| CN110220044A (en) * | 2019-06-24 | 2019-09-10 | 吴忠仪表工程技术服务有限公司 | Double rotational directions multispiral staggered form valve core structure |
| CN113357378B (en) * | 2021-06-01 | 2023-06-20 | 陕钢集团汉中钢铁有限责任公司 | High-temperature-resistant gas one-way valve |
| CN113738948B (en) * | 2021-08-25 | 2022-09-20 | 浙江大学 | Valve core structure capable of realizing large adjustable ratio and high adjustment precision, adjusting valve and method |
| CN114263754A (en) * | 2021-12-20 | 2022-04-01 | 无锡卓尔阀业有限公司 | Flow regulation structure and double-helix conical sealing pressure reduction regulating valve with same |
| CN115467990B (en) * | 2022-10-26 | 2024-08-09 | 志泰科技集团有限公司 | Valve with flow regulating mechanism |
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| US7832653B2 (en) * | 2005-02-28 | 2010-11-16 | Daikin Industries, Ltd. | Expansion valve having a grooved valve member and refrigeration device including the same |
| CN101813192B (en) * | 2010-04-13 | 2011-06-08 | 无锡市亚迪流体控制技术有限公司 | High-flow adjustable ratio control valve |
| CN203051786U (en) * | 2012-12-31 | 2013-07-10 | 雷蒙德（北京）阀门制造有限公司 | Spiral groove plunger single-seat control valve |
| CN203348640U (en) * | 2013-06-18 | 2013-12-18 | 上海阀特流体控制阀门有限公司 | Valve element of micro flow control valve |
| CN204267762U (en) * | 2014-11-04 | 2015-04-15 | 无锡市亚迪流体控制技术有限公司 | High Pressure Difference high-flow adjustable ratio control valve |
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Denomination of invention: High pressure differential flow large adjustable ratio control valve Effective date of registration: 20220429 Granted publication date: 20170125 Pledgee: Jiangsu SINOSURE technology microfinance Co.,Ltd. Pledgor: WUXI YADI FLUID CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2022320000199 |
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Granted publication date: 20170125 Pledgee: Jiangsu SINOSURE technology microfinance Co.,Ltd. Pledgor: WUXI YADI FLUID CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2022320000199 |
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