CN107559478A - A kind of electromagnetic start formula fluid dynamic difference opening and closing device - Google Patents
A kind of electromagnetic start formula fluid dynamic difference opening and closing device Download PDFInfo
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- CN107559478A CN107559478A CN201710946084.1A CN201710946084A CN107559478A CN 107559478 A CN107559478 A CN 107559478A CN 201710946084 A CN201710946084 A CN 201710946084A CN 107559478 A CN107559478 A CN 107559478A
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- 239000012530 fluid Substances 0.000 title claims abstract description 73
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 29
- 238000005260 corrosion Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
Abstract
The invention discloses a kind of electromagnetic start formula fluid dynamic difference opening and closing device, including valve body and upper lid, valve body is provided with flow-guiding mouth, and upper lid is connected with valve seal；The upper end of upper lid is provided with electromagnet, the lower end of iron core is connected with upper connecting rod and lower link in turn, the first spring is arranged with upper connecting rod, pressing plate is arranged with lower link, gap is provided between pressing plate and lower link, seal assembly is connected between lower link and upper connecting rod, primary diaphragm is arranged with pressing plate, the bottom surface of primary diaphragm touches with flow-guiding mouth, secondary diaphragm is provided between seal assembly and upper connecting rod, pilot hole is offered on primary diaphragm, pilot hole makes the cavity between primary diaphragm and secondary diaphragm be connected with fluid cavity.The electromagnetic start formula fluid dynamic difference opening and closing device of the present invention is applied to the working environment of larger inside nominal diameter and operting differential pressure, also has the advantages of being not easy to reveal.
Description
Technical field
The present invention relates to fluid control device technical field, is opened and closed more particularly to a kind of electromagnetic start formula fluid dynamic difference
Device.
Background technology
Currently, fluid control device is often magnetic valve with product, such as diaphragm electromagnetic valve, and the purpose is to control corrosion rate Jie
Matter break-make, but Korrosionsmedium is not readily accessible to used in magnetic valve on metal material again, so, generally use non-metallic material
The diaphragm of material is suppressed by spring, to have the function that close fluid by.But spring pressure is increased in any case, it is average to single
The pressure of plane product still can not meet the function of closing fluid, can not bear larger operting differential pressure.To solve leakage problem,
Conventional method is to increase the power of coil, but when magnet exciting coil works, it is necessary to substantial amounts of operating current, it is easy to cause line
Circle generates heat and burnt rapidly；Meanwhile diaphragm electromagnetic valve can only suppress diaphragm block fluid flow by the pressure of spring down in off position
Valve port.Therefore, in general diaphragm electromagnetic valve inside nominal diameter only in below 8mm, operting differential pressure is only 0.1 to 0.2MPa.Even if
The inside nominal diameter very little of diaphragm electromagnetic valve, leakage problem can not be solved thoroughly, and some diaphragm electromagnetic valve operating power consumptions even reach
To hundreds of watts.Therefore, in general enterprise does not produce electromagnetic type diaphragm electromagnetic valve substantially yet.
The content of the invention
It is an object of the invention to provide a kind of electromagnetic start formula fluid dynamic difference opening and closing device, to solve above-mentioned prior art
The problem of existing, make electromagnetic start formula fluid dynamic difference opening and closing device in the working environment of larger inside nominal diameter and operting differential pressure
Under also do not reveal.
To achieve the above object, the invention provides following scheme：
The invention provides a kind of electromagnetic start formula fluid dynamic difference opening and closing device, including valve body and upper lid, the valve body
Flow-guiding mouth is provided with, the upper lid is connected with the valve seal；
The upper end of the upper lid is provided with electromagnet, and the electromagnet includes sleeve pipe, coil block, permanent magnet and iron core, institute
State coil block to be set in described sleeve pipe, the permanent magnet is arranged on the upper inside of described sleeve pipe, and the iron core is located at institute
The inner lower of sleeve pipe is stated, the iron core can move up and down in described sleeve pipe；
The lower end of the iron core is connected with upper connecting rod and lower link in turn, and the first spring, institute are arranged with the upper connecting rod
The one end for stating the first spring is against on the upper lid, and the other end of first spring is against the end of the upper connecting rod, described
Pressing plate is arranged with lower link, is provided with gap between the pressing plate and the lower link, the lower link and the upper connecting rod it
Between be connected with seal assembly, the seal assembly can control the keying in the gap, primary diaphragm is arranged with the pressing plate,
The bottom surface of the primary diaphragm is touched with the flow-guiding mouth, and secondary diaphragm is provided between the seal assembly and the upper connecting rod,
Offer pilot hole on the primary diaphragm, the pilot hole make cavity between the primary diaphragm and the secondary diaphragm with
Fluid cavity is connected, and the edge of the primary diaphragm and the secondary diaphragm is connected by pressure ring with the valve body.
Preferably, the upper end of the upper connecting rod is bulb, and the lower end of the electromagnet is provided with groove, the bulb clamping
In in the groove.
Preferably, the lower end of the lower link and the upper end of the upper connecting rod are connected through a screw thread；Under the lower link
End has been connected through a screw thread nuts and washers；Locknut and pad have been connected through a screw thread on the pressing plate on the downside of the primary diaphragm
Circle.
Preferably, the primary diaphragm and the secondary diaphragm are made by anti-corrosion material.
Preferably, second spring is provided between the permanent magnet and the iron core, one end of the second spring is against institute
State on permanent magnet, the other end is against on the iron core.
Present invention also offers a kind of electromagnetic start formula fluid dynamic difference opening and closing device, including valve body and upper lid, the valve
Body is provided with flow-guiding mouth, and the upper lid is connected with the valve seal；
The upper end of the upper lid is provided with electromagnet, and the electromagnet includes sleeve pipe, coil block, permanent magnet and iron core, institute
State coil block to be set in described sleeve pipe, the permanent magnet is arranged on the upper inside of described sleeve pipe, and the iron core is located at institute
The inner lower of sleeve pipe is stated, the iron core can move up and down in described sleeve pipe；
The lower end of the iron core is connected with upper connecting rod and lower link in turn, and the first spring, institute are arranged with the upper connecting rod
The one end for stating the first spring is against on the upper lid, and the other end of first spring is against on spring base, the spring socket sleeve
It is located in the upper connecting rod, lower piston is arranged with the lower link, gap is provided between the lower link and the lower piston,
Seal assembly is connected between the lower link and the upper connecting rod, the seal assembly can control the keying in the gap,
Sealing ring is embedded with the bottom surface of the lower piston, the sealing ring touches with the flow-guiding mouth, is arranged with the upper connecting rod
Piston, the upper piston and the lower piston are connected by inside and outside half-round clamping ring, are set between the upper piston and the lower piston
Have the 3rd spring, one end of the 3rd spring is against on the upper piston, the other end of the 3rd spring be against it is described under
On piston, piston ring, the upper piston and the lower piston and the upper lid are provided between the upper connecting rod and the upper piston
Inwall between be equipped with piston ring, the upper lid is provided with pilot hole, and the pilot hole makes the lower piston and the upper work
Cavity between plug is connected with fluid cavity, and runner is provided with the upper connecting rod and the lower link, and the runner makes the upper work
Plug connects with the cavity between the cover plate with fluid cavity.
Preferably, the sealing ring is arranged in the lower surface groove of the lower piston, and the sealing ring is fixed by lower platen,
The lower platen is connected in the snap ring of the lower piston, and the lower end of the lower link has been connected through a screw thread nuts and washers.
Preferably, the upper connecting rod, lower link, the upper piston, the lower piston, the seal assembly, described
Sealing ring is made by anti-corrosion material.
Invention further provides a kind of electromagnetic start formula fluid dynamic difference opening and closing device, including valve body and upper lid, the valve
Body is provided with flow-guiding mouth, and the upper lid is connected with the valve seal；
The upper end of the upper lid is provided with electromagnet, and the electromagnet includes sleeve pipe, coil block, permanent magnet and iron core, institute
State coil block to be set in described sleeve pipe, the permanent magnet is arranged on the upper inside of described sleeve pipe, and the iron core is located at institute
The inner lower of sleeve pipe is stated, the iron core can move up and down in described sleeve pipe；
The lower end of the iron core is connected with upper connecting rod and lower link in turn, and tub piston, institute are arranged with the lower link
State and be provided with gap between the bottom plate of lower link and the tub piston, sealing is connected between the lower link and the upper connecting rod
Component, the seal assembly can control the keying in the gap, sealing ring, the sealing are embedded with the bottom surface of the lower piston
Circle is touched with the flow-guiding mouth, and turriform spring is arranged with the upper connecting rod, and the turriform spring applies pre-pressing force, the bucket
The inwall upper end of formula piston is connected with spring arch clasp, and the big end head of the turriform spring is against on the spring arch clasp, described
The small end head of turriform spring is against on the seal assembly, and the tub piston is arranged on the valve inner, the tub
Be provided with guide gap between the outer wall of piston and the inwall of valve body, the guide gap make the cavity of the tub internal piston with
Fluid cavity connects.
Preferably, the 4th spring is also arranged with the upper connecting rod, one end of the 4th spring is against on the upper lid,
The other end of 4th spring is against on the spring arch clasp.
The present invention achieves following technique effect relative to prior art：
The present invention makes permanent magnet and iron core produce phase by the working pulse electric current to coil block application forward or backwards
The action inhaled or repelled each other, iron core reciprocating action is driven, and then drive upper connecting rod, lower link and seal assembly motion so that sealing
Component can control opening or closing for gap between top board, lower piston or tub piston and lower link, so as to change primary diaphragm, under
The pressure differential of piston or tub piston upper and lower side, and primary diaphragm, lower piston or tub piston are promoted by the pressure differential of change
Move up and down, realize opening or closing to pod apertures.The present invention acts on top board, lower piston or bucket by using Fluid pressure
Formula piston, and then primary diaphragm and sealing ring is pressed on by means of Fluid pressure in pod apertures, add under closed mode
Pressure, solve the problems, such as that valve body is easily revealed, be favorably improved the inside nominal diameter of electromagnetic start formula fluid dynamic difference opening and closing device
And operting differential pressure.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of the electromagnetic start formula fluid dynamic difference opening and closing device of the embodiment of the present invention 1；
Fig. 2 is the structural representation of the electromagnetic start formula fluid dynamic difference opening and closing device of the embodiment of the present invention 2；
Fig. 3 is the structural representation of the electromagnetic start formula fluid dynamic difference opening and closing device of the embodiment of the present invention 3；
Fig. 4 is the structural representation of the electromagnetic start formula fluid dynamic difference opening and closing device of the embodiment of the present invention 4；
Wherein：1- valve bodies, cover on 2-, 3- flow-guiding mouths, 4- sleeve pipes, 5- coil blocks, 6- permanent magnets, 7- iron cores, connect on 8-
Bar, 9- lower links, the springs of 10- first, 11- pressing plates, 12- gaps, 13- seal assemblies, 14- secondary diaphragms, 15- pilot holes, 16-
Pressure ring, 17- second springs, 18- primary diaphragms, 21- spring bases, 22- lower pistons, 23- sealing rings, 24- upper pistons, 25- the 3rd
Spring, 26- piston rings, 27- runners, 28- lower platens, 31- tub pistons, 32- turriform springs, 33- spring arch clasps, 34- guide
Gap, the springs of 41- the 4th.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It is an object of the invention to provide a kind of electromagnetic start formula fluid dynamic difference opening and closing device, to solve above-mentioned prior art
The problem of existing, make electromagnetic start formula fluid dynamic difference opening and closing device in the working environment of larger inside nominal diameter and operting differential pressure
Under also do not reveal.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
Embodiment 1：As shown in figure 1, a kind of electromagnetic start formula fluid dynamic difference opening and closing device is present embodiments provided, including
Valve body 1 and upper lid 2, valve body 1 are provided with flow-guiding mouth 3, and upper lid 2 is tightly connected with valve body 1.
The upper end of upper lid 2 is provided with electromagnet, and electromagnet includes sleeve pipe 4, coil block 5, permanent magnet 6 and iron core 7, coil group
Part 5 is set on sleeve pipe 4, and permanent magnet 6 is arranged on the upper inside of sleeve pipe 4, and iron core 7 is located at the inner lower of sleeve pipe 4, iron core 7
It can be moved up and down in sleeve pipe 4.Formed by the upper end of iron core 7 with permanent magnet 6 and inhale and denounce, the electricity of coil block 5 can be reduced
Stream, makes coil block 5 be not easy to generate heat and burn.Second spring 17, second spring 17 are preferably provided between permanent magnet 6 and iron core 7
One end be against on permanent magnet 6, the other end is against on iron core 7, the pre-applied thrust of second spring 17 is given, when can increase power-off
The seal force applied to seal assembly 13, further ensures that device is not revealed, and can reduce the descending required electric current of electromagnet.
The lower end of iron core 7 is connected with upper connecting rod 8 and lower link 9 in turn, and the upper end of upper connecting rod 8 is bulb, under electromagnet
Hold to be connected in provided with groove, bulb in groove, make upper connecting rod 8 that there is universal property relative to iron core 7, it is ensured that the energy of upper connecting rod 8
Enough activities are freely.The lower end of lower link 9 and the upper end of upper connecting rod 8 are connected through a screw thread.The first spring is arranged with upper connecting rod 8
10, one end of the first spring 10 is against on lid 2, and the other end of the first spring 10 is against the end of upper connecting rod 8, and gives the first bullet
The pre-applied thrust of spring 10.
Pressing plate 11 is arranged with lower link 9, gap 12, lower link 9 and upper connecting rod 8 are provided between pressing plate 11 and lower link 9
Between be connected with seal assembly 13, seal assembly 13 is located at the upside of pressing plate 11 and can control gap under the drive of lower link 9
12 keying, the lower end of lower link 9 and positioned at pressing plate 11 downside attaching nut and packing ring, nuts and washers have with pressing plate 11
Certain spacing.It is arranged with primary diaphragm 18 on pressing plate 11, primary diaphragm 18 is by the locknut and packing ring pressure that are arranged on pressing plate 11
Fasten, the bottom surface of primary diaphragm 18 can touch and seal with flow-guiding mouth 3.Pilot hole 15 is offered on primary diaphragm 18, first
Preferably along the circumferential uniform multiple of primary diaphragm 18, pilot hole 15 makes between primary diaphragm 18 and secondary diaphragm 14 guide hole 15
Cavity connects with fluid cavity.Secondary diaphragm 14, primary diaphragm 18 and secondary diaphragm 14 are provided between seal assembly 13 and upper connecting rod 8
Edge be connected and seal with valve body 1 by pressure ring 16.Primary diaphragm 18 and secondary diaphragm 14 are preferably made up of anti-corrosion material, most
Preferably, every parts (lower link 9, pressing plate 11, locknut, packing ring, nut, pressure ring 16, seal assembly 13 contacted with fluid
With valve body 1 etc.) be made by anti-corrosion material, the antiseptic property and service life of whole device can be improved.
The operation principle of the present embodiment is：Apply pulse current forward or backwards, caused pulsed magnetic to coil block 5
Field makes the upper end of iron core 7 and permanent magnet 6 be formed and inhale and denounce, and thus by upper connecting rod 8 lower link 9 can be driven to move up and down.When
When lower link 9 is up, band dynamic sealing assembly 13 first is up therewith, opens the gap 12 between pressing plate 11 and lower link 9 so that
Pressure between primary diaphragm 18 and secondary diaphragm 14 is revealed by gap 12, so that the pressure of fluid cavity is more than primary diaphragm
Pressure on 18 between secondary diaphragm 14, cause to be applied to the insufficient pressure in pod apertures, due to the stream under primary diaphragm 18
The fluid dynamic that the pressure of body cavity is more than between primary diaphragm 18 and secondary diaphragm 14 is poor, and then promotes primary diaphragm 18 up,
The pod apertures of primary diaphragm 18 and fluid cavity are made to generate set distance, fluid is by this segment distance along fluid cavity stream
It is dynamic；When lower link 9 is descending, band dynamic sealing assembly 13 is descending therewith, closes the gap 12 between pressing plate 11 and lower link 9, makes
Leak-free pressure between primary diaphragm 18 and secondary diaphragm 14 and pressurize, pilot hole 15 of the Fluid pressure along primary diaphragm 18
Enter between primary diaphragm 18 and secondary diaphragm 14, the pressure between primary diaphragm 18 and secondary diaphragm 14 is more than fluid cavity
Pressure, producing makes pressing plate 11 and the descending pressure of primary diaphragm 18, when primary diaphragm 18 is gone downwards in the pod apertures of fluid cavity
When, Fluid pressure is then applied between primary diaphragm 18 and secondary diaphragm 14 completely, makes lower end and the fluid cavity of primary diaphragm 18
Pod apertures in form pressure differential, because the collar extension sectional area of pod apertures is small, when fluid pressure differential is made by primary diaphragm 18
When using collar extension, the upper pressure for forming primary diaphragm 18 is more than low pressure, it is achieved thereby that the effect of block fluid.
Embodiment 2：As shown in Fig. 2 a kind of electromagnetic start formula fluid dynamic difference opening and closing device is present embodiments provided, with reality
Apply unlike example 1：
The lower end of iron core 7 is connected with upper connecting rod 8 and lower link 9 in turn, is arranged with the first spring 10 in upper connecting rod 8, and first
One end of spring 10 is against on lid 2, and the other end of the first spring 10 is against on spring base 21, and spring base 21 is set in upper connecting rod
On 8.
It is arranged with lower piston 22 on lower link 9, the lower end of lower link 9 and is connected through a screw thread positioned at the downside of lower piston 22
There is certain spacing between the bottom surface of nuts and washers, nuts and washers and lower piston 22.Between lower link 9 and lower piston 22
Provided with gap 12, seal assembly 13 is connected between lower link 9 and upper connecting rod 8, seal assembly 13 is located at the upside of lower piston 22 simultaneously
The keying in gap 12 can be controlled under the drive of lower link 9.Sealing ring 23 is embedded with the bottom surface of lower piston 22, sealing ring 23 is set
Put in the lower surface groove of lower piston 22, sealing ring 23 is fixed by lower platen 28, and lower platen 28 is connected to the snap ring of lower piston 22
Interior, sealing ring 23 can touch and seal with flow-guiding mouth 3.Upper piston 24 is set in upper connecting rod 8, upper piston 24 and lower piston 22
Connected by inside and outside half-round clamping ring, the 3rd spring 25 is provided between upper piston 24 and lower piston 22, one end of the 3rd spring 25 is supported
On upper piston 24, the other end of the 3rd spring 25 is against on lower piston 22.Piston ring is provided between upper connecting rod 8 and upper piston 24
26 (being preferably 2V types piston ring), upper piston 24 and lower piston 22 are arranged inside lid 2, and upper piston 24 is interior with upper lid 2
Piston ring 26 (being preferably opposite side V-type piston ring) is provided between wall, piston ring 26 is provided between the inwall of lower piston 22 and upper lid 2
(being preferably single V-type piston ring), the short tube of the upper downside of lid 2 are provided with pilot hole 15, and pilot hole 15 is preferably along the circumferential equal of short tube
Cloth is multiple, and pilot hole 15 makes the cavity between lower piston 22 and upper piston 24 be connected with fluid cavity, in upper connecting rod 8 and lower link 9
Provided with runner 27, runner 27 makes the cavity between upper piston 24 and cover plate be connected with fluid cavity.Upper connecting rod 8, lower link 9, upper work
Plug 24, lower piston 22, seal assembly 13, sealing ring 23 are made by anti-corrosion material.
The operation principle of the present embodiment is same as Example 1, thes improvement is that：When input direction is from left to right
(left side is set as input, hereinafter referred to as "+"；Right side is output end, hereinafter referred to as "-"), in 22 groups of lower piston and fluid
When chamber is in closed state, the pressure between 24 groups of 22 groups of lower piston and upper piston is "+"；At 22 groups of lower piston and fluid cavity
In opening, the pressure between 24 groups of 22 groups of lower piston and upper piston is "-", and now, Fluid pressure "+" passes through lower company
Bar 9 and the runner of upper connecting rod 8 27 are reached on 24 groups of upper piston, and Fluid pressure "+" is applied to lower piston 22 by seal assembly 13
On, reach no pressure "+" and reach between 24 groups of 22 groups of lower piston and upper piston, produce closing presure, it is on the contrary then open.
The characteristics of the present embodiment is maximum in fluid system does not differentiate between output and input direction when being installation.
Embodiment 3：As shown in figure 3, a kind of electromagnetic start formula fluid dynamic difference opening and closing device is present embodiments provided, with reality
Apply unlike example 1：
The lower end of iron core 7 is connected with upper connecting rod 8 and lower link 9 in turn, and tub piston 31, lower company are arranged with lower link 9
Gap 12 is provided between the bottom plate of bar 9 and tub piston 31, the acute angle that bottom plate upper end is provided with ring-type is raised, lower link 9 and upper company
Seal assembly 13 is connected between bar 8, seal assembly 13 is located on the upside of bottom plate and can be against acute angle under the drive of lower link 9
In projection and control the keying in gap 12.Sealing ring 23 is embedded with the bottom surface of lower piston 22, sealing ring 23 can touch with flow-guiding mouth 3
Connect and seal.Inverted turriform spring 32 is arranged with upper connecting rod 8, turriform spring 32 applies pre-pressing force, tub piston 31
Inwall upper end is connected with spring arch clasp 33, and the big end head of turriform spring 32 is against on spring arch clasp 33, turriform spring 32 it is small
End head is against on seal assembly 13, and tub piston 31 is arranged on inside valve body 1, and the outer wall of tub piston 31 is interior with valve body 1
Guide gap 34 is provided between wall, guide gap 34 makes the cavity inside tub piston 31 be connected with fluid cavity.
The operation principle of the present embodiment is：When applying pulsed operation electric current forward or backwards to coil block 5, iron core
7 with permanent magnet 6 in the presence of homopolar-repulsion, heteropole are attracting, carry out reciprocating work, driven upper connecting rod 8, seal assembly 13
With the up and down motion of lower link 9.When attracting for heteropole, iron core 7 drives that lower link 9 is up, and seal assembly 13 is by turriform bullet
The initial compression cushioning effect of spring 32 is up therewith, and so as to reduce the demand of inceptive impulse electric current, seal assembly 13 opens bucket
Gap 12 between formula piston 31 and lower link 9, the upper end pressure release of tub piston 31 so that the lower end pressure of tub piston 31 is more than
Upper end pressure, formation fluid pressure differential promotion tub piston 31 is up, and fluid passes through fluid cavity；Conversely, when generation homopolar-repulsion
When, seal assembly 13 is in iron core 7 and descending therewith, closed vat under the effect of repelling each other of permanent magnet 6 and the pressure effect of turriform spring 32
Gap 12 between formula piston 31 and lower link 9 so that the lower end pressure of tub piston 31 is less than upper end pressure, forms fluid pressure
Power difference promotion tub piston 31 is descending, and fluid can not pass through flow-guiding mouth 3.
Embodiment 4：As shown in figure 4, a kind of electromagnetic start formula fluid dynamic difference opening and closing device is present embodiments provided, as
To the improved technical scheme of embodiment 3, the improvement is that, the 4th spring 41, the 4th spring 41 are also arranged with upper connecting rod 8
One end be against on lid 2, the other end of the 4th spring 41 is against on spring arch clasp 33.Remaining technical characteristic and the phase of embodiment 3
Together.The present embodiment is applied to pipeline drift diameter in more than 100mm, when in use advantageously in the initial pressure using the 4th spring 41
Contracting power is small and bidirectional energy-storage after release force it is strong the advantages of, it is ensured that the reciprocating motion of tub piston 31 is smooth and device
Sealing, while it is also beneficial to reduce the power consumption of pulse current.
Apply specific case in this specification to be set forth the principle and embodiment of the present invention, above example
Explanation be only intended to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, in specific embodiments and applications there will be changes.In summary, in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
- A kind of 1. electromagnetic start formula fluid dynamic difference opening and closing device, it is characterised in that：Including valve body and upper lid, set on the valve body There is flow-guiding mouth, the upper lid is connected with the valve seal；The upper end of the upper lid is provided with electromagnet, and the electromagnet includes sleeve pipe, coil block, permanent magnet and iron core, the line Coil assembly is set in described sleeve pipe, and the permanent magnet is arranged on the upper inside of described sleeve pipe, and the iron core is located at the set The inner lower of pipe, the iron core can move up and down in described sleeve pipe；The lower end of the iron core is connected with upper connecting rod and lower link in turn, is arranged with the first spring in the upper connecting rod, and described One end of one spring is against on the upper lid, and the other end of first spring is against the end of the upper connecting rod, the lower company Pressing plate is arranged with bar, gap is provided between the pressing plate and the lower link, is blocked between the lower link and the upper connecting rod Seal assembly is connected to, the seal assembly can control the keying in the gap, and primary diaphragm is arranged with the pressing plate, described The bottom surface of primary diaphragm is touched with the flow-guiding mouth, and secondary diaphragm is provided between the seal assembly and the upper connecting rod, described Pilot hole is offered on primary diaphragm, the pilot hole makes the cavity and fluid between the primary diaphragm and the secondary diaphragm Chamber is connected, and the edge of the primary diaphragm and the secondary diaphragm is connected by pressure ring with the valve body.
- 2. electromagnetic start formula fluid dynamic difference opening and closing device according to claim 1, it is characterised in that：The upper connecting rod Upper end is bulb, and the lower end of the electromagnet is to be connected in provided with groove, the bulb in the groove.
- 3. electromagnetic start formula fluid dynamic difference opening and closing device according to claim 1, it is characterised in that：The lower link Lower end and the upper end of the upper connecting rod are connected through a screw thread；The lower end of the lower link has been connected through a screw thread nuts and washers； Locknut and packing ring have been connected through a screw thread on the pressing plate on the downside of the primary diaphragm.
- 4. electromagnetic start formula fluid dynamic difference opening and closing device according to claim 1, it is characterised in that：The primary diaphragm It is made with the secondary diaphragm by anti-corrosion material.
- 5. electromagnetic start formula fluid dynamic difference opening and closing device according to claim 1, it is characterised in that：The permanent magnet and Second spring is provided between the iron core, one end of the second spring is supported on the permanent magnet, and the other end is against the iron On core.
- A kind of 6. electromagnetic start formula fluid dynamic difference opening and closing device, it is characterised in that：Including valve body and upper lid, set on the valve body There is flow-guiding mouth, the upper lid is connected with the valve seal；The upper end of the upper lid is provided with electromagnet, and the electromagnet includes sleeve pipe, coil block, permanent magnet and iron core, the line Coil assembly is set in described sleeve pipe, and the permanent magnet is arranged on the upper inside of described sleeve pipe, and the iron core is located at the set The inner lower of pipe, the iron core can move up and down in described sleeve pipe；The lower end of the iron core is connected with upper connecting rod and lower link in turn, is arranged with the first spring in the upper connecting rod, and described One end of one spring is against on the upper lid, and the other end of first spring is against on spring base, and the spring socket sleeve is located at In the upper connecting rod, lower piston is arranged with the lower link, gap is provided between the lower link and the lower piston, it is described Seal assembly is connected between lower link and the upper connecting rod, the seal assembly can control the keying in the gap, described Sealing ring is embedded with the bottom surface of lower piston, the sealing ring is touched with the flow-guiding mouth, and upper piston is arranged with the upper connecting rod, The upper piston is connected with the lower piston by inside and outside half-round clamping ring, and the 3rd is provided between the upper piston and the lower piston Spring, one end of the 3rd spring are against on the upper piston, and the other end of the 3rd spring is against on the lower piston, Be provided with piston ring between the upper connecting rod and the upper piston, the inwall of the upper piston and the lower piston and the upper lid it Between be equipped with piston ring, the upper lid is provided with pilot hole, and the pilot hole makes between the lower piston and the upper piston Cavity connects with fluid cavity, is provided with runner in the upper connecting rod and the lower link, the runner make the upper piston with it is described Cavity between cover plate connects with fluid cavity.
- 7. electromagnetic start formula fluid dynamic difference opening and closing device according to claim 6, it is characterised in that：The sealing ring is set Put in the lower surface groove of the lower piston, the sealing ring is fixed by lower platen, and the lower platen is connected to the lower piston Snap ring in, the lower end of the lower link has been connected through a screw thread nuts and washers.
- 8. electromagnetic start formula fluid dynamic difference opening and closing device according to claim 6, it is characterised in that：The upper connecting rod, The lower link, the upper piston, the lower piston, the seal assembly, the sealing ring are made by anti-corrosion material.
- A kind of 9. electromagnetic start formula fluid dynamic difference opening and closing device, it is characterised in that：Including valve body and upper lid, set on the valve body There is flow-guiding mouth, the upper lid is connected with the valve seal；The upper end of the upper lid is provided with electromagnet, and the electromagnet includes sleeve pipe, coil block, permanent magnet and iron core, the line Coil assembly is set in described sleeve pipe, and the permanent magnet is arranged on the upper inside of described sleeve pipe, and the iron core is located at the set The inner lower of pipe, the iron core can move up and down in described sleeve pipe；The lower end of the iron core is connected with upper connecting rod and lower link in turn, tub piston is arranged with the lower link, under described Gap is provided between the bottom plate of connecting rod and the tub piston, sealing group is connected between the lower link and the upper connecting rod Part, the seal assembly can control the keying in the gap, sealing ring, the sealing ring are embedded with the bottom surface of the lower piston Touched with the flow-guiding mouth, turriform spring is arranged with the upper connecting rod, the turriform spring applies pre-pressing force, the tub The inwall upper end of piston is connected with spring arch clasp, and the big end head of the turriform spring is against on the spring arch clasp, the tower The small end head of shape spring is against on the seal assembly, and the tub piston is arranged on the valve inner, and the tub is lived Guide gap is provided between the outer wall of plug and the inwall of valve body, the guide gap makes the cavity and stream of the tub internal piston Body cavity connects.
- 10. electromagnetic start formula fluid dynamic difference opening and closing device according to claim 9, it is characterised in that：The upper connecting rod On be also arranged with the 4th spring, one end of the 4th spring is against on the upper lid, and the other end of the 4th spring is against On the spring arch clasp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946084.1A CN107559478A (en) | 2017-10-12 | 2017-10-12 | A kind of electromagnetic start formula fluid dynamic difference opening and closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946084.1A CN107559478A (en) | 2017-10-12 | 2017-10-12 | A kind of electromagnetic start formula fluid dynamic difference opening and closing device |
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| CN107559478A true CN107559478A (en) | 2018-01-09 |
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| CN201710946084.1A Pending CN107559478A (en) | 2017-10-12 | 2017-10-12 | A kind of electromagnetic start formula fluid dynamic difference opening and closing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556419A (en) * | 2018-10-22 | 2019-04-02 | 中航工程集成设备有限公司 | A kind of electromagnetism pressing device |
| CN114263783A (en) * | 2022-01-27 | 2022-04-01 | 刘文华 | Valve plate opening and closing type sealing device |
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