CN208024918U - A kind of solenoid valve diaphragm unit - Google Patents
A kind of solenoid valve diaphragm unit Download PDFInfo
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- CN208024918U CN208024918U CN201820436486.7U CN201820436486U CN208024918U CN 208024918 U CN208024918 U CN 208024918U CN 201820436486 U CN201820436486 U CN 201820436486U CN 208024918 U CN208024918 U CN 208024918U
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- diaphragm
- solenoid valve
- valve
- sealing
- positioning hole
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Abstract
The utility model discloses a kind of solenoid valve diaphragm units comprising diaphragm pressing plate (1), diaphragm (2), sealing valve port part (3), diaphragm bottom plate (4) and pilot valve mouth (5)；The pilot valve mouth (5) from top to bottom sequentially passes through diaphragm pressing plate (1), diaphragm (2), sealing valve port part (3), diaphragm bottom plate (4), and passes through spring shim (6) and the fixed locking of nut (7)；Diaphragm pressing plate (1), diaphragm (2), sealing valve port part (3), diaphragm bottom plate (4) and pilot valve mouth (5) are coaxial distribution.The utility model is using the above structure so that diaphragm is not direct to be contacted with primary valve, is reduced the impact force of diaphragm, is effectively improved the service life of diaphragm, to extend the service life of corresponding solenoid valve, is suitable for higher pressure and flow.
Description
Technical field
The utility model belongs to the technical field of solenoid valve more particularly to a kind of solenoid valve diaphragm unit.
Background technology
Solenoid valve (Solenoid valve) is electromagnetically controlled industrial equipment, is the automation base for controlling fluid
Plinth element, belongs to actuator, however it is not limited to hydraulic pressure, pneumatic.The direction of adjustment medium, flow, speed in industrial control system
Degree and other parameters.Solenoid valve can coordinate different circuits to realize expected control, and the precision controlled and flexibility
It can ensure.Different solenoid valves plays a role in the different location of control system, the most commonly used is check valve, safety valve,
Directional control valve, speed-regulating valve etc..It can be divided into direct-acting electromagnetic valve, step direct-acting type electromagnetic valve, guide type electromagnetic by principle
Valve three categories.
Solenoid valve is essential a kind of actuator in automatic control system, and wherein step direct-acting type electromagnetic valve is one
The relatively common electromagnetic valve structure of kind, for the structure solenoid valve due to simple in structure, switching speed is fast, uses pressure height, often applies
In on water treatment facilities.Solenoid valve is applied in water treatment facilities, and most common also most scabrous is water hammer, diaphragm damage
It is most common, therefore the intensity of diaphragm is the key that electromagnetic valve quality ensures.
For the diaphragm of step direct-acting type electromagnetic valve currently on the market using flat diaphragm, diaphragm pressing plate and bottom plate are logical up and down
Cross the connection of pilot valve mouth.Valve port is directly sealed by flat diaphragm, and the thickness of diaphragm is usually no more than 1.5mm.Diaphragm is rushed in pressure
It hits down and valve port is constantly hit, the pressure and valve port that 10 times or more are even higher than in water hammer are hit, it is envisaged that this
The damage of diaphragm is inevitable in the case of kind.Because using flat diaphragm, the surrounding of diaphragm compresses sealing by valve body and valve deck
, the process of diaphragm displacement is really that diaphragm is resetted in continuous stretch, and sealing station of the diaphragm on valve port is also continuous
Variation just will appear valve port and close the phenomenon that not living after reaching to a certain degree.Because the stretching of flat diaphragm is limited, this also relationship
Aperture to valve port will not be very big, that is to say, that the flow of solenoid valve is impossible prodigious.
Utility model content
(1) technical problems to be solved
The technical problem to be solved by the present invention is to provide a kind of to reduce diaphragm impact force to extend its service life
Solenoid valve diaphragm unit allow use pressure higher, the flow bigger of solenoid valve to improve the service life of solenoid valve.
(2) technical solution
In order to solve the above technical problems, the utility model provides a kind of solenoid valve diaphragm unit comprising diaphragm pressing plate, film
Piece, sealing valve port part, diaphragm bottom plate and pilot valve mouth；Pilot valve mouth from top to bottom sequentially passes through diaphragm pressing plate, diaphragm, sealing valve port
Part, diaphragm bottom plate, and locking is fixed by spring shim and nut；Diaphragm pressing plate, diaphragm, sealing valve port part, diaphragm bottom plate and
Pilot valve mouth is coaxial distribution.
Wherein, circular arc anchor ring that is co-axial and raising up is provided on diaphragm, on the circular arc anchor ring there are one settings
Perforative balance hole；The outer diameter of diaphragm pressing plate is less than the internal diameter of circular arc anchor ring.
Wherein, diaphragm is internally provided with matched woven cloth.
Wherein, the outer ring of diaphragm is provided with co-axial and integrally connected sealing ring.
Wherein, sealing valve port part is made of rubber material.
Wherein, sealing valve port part is internally provided with matched steel plate, which wraps steel plate simultaneously
It securely pastes therewith.
Wherein, the bottom surface outer ring of diaphragm bottom plate is provided with the locating rod of connection in conjunction.
Wherein, locating rod shares three, and three locating rods are equal as the rounded array in axle center using the axial line of diaphragm bottom plate
Even distribution.
Wherein, the centre of pilot valve mouth is provided through the through-hole of upper and lower ends.
Wherein, the centre of diaphragm pressing plate is provided with the first positioning hole that is co-axial and matching with pilot valve mouth, film
The centre of piece is provided with the second positioning hole that is co-axial and matching with pilot valve mouth, and the centre of sealing valve port part is provided with
Third positioning hole that is co-axial and matching with pilot valve mouth, the centre of diaphragm bottom plate are provided with co-axial and and pilot valve
The 4th positioning hole that mouth matches；Pilot valve mouth from top to bottom sequentially pass through the first positioning hole, the second positioning hole,
Locking is fixed by spring shim and nut after third positioning hole, the 4th positioning hole.
(3) advantageous effect
Compared with prior art, the utility model carries independent sealing valve port part so that diaphragm is not direct to be connect with valve port
It touches, not only the sealing performance of valve port is more preferable, but also reduces the impact force of diaphragm, effectively increases the service life of diaphragm, from
And the service life of solenoid valve entirety is improved, and allow use pressure higher, the flow bigger of solenoid valve；And be arranged on diaphragm
Circular arc anchor ring, both improves membrane ruggedness, reduces drawing high for diaphragm, and increases the telescopic displacement amount of diaphragm, to increase
The aperture of solenoid valve so that the flow of solenoid valve increases；Wherein, the woven cloth being arranged in diaphragm can further strengthen film
The intensity of piece improves its service life；And be arranged with the sealing ring of diaphragm integral type, it can both play the role of installation positioning,
So that the simpler convenience of assembly, and the stretching movement of diaphragm can be limited；In addition, sealing valve port part uses steel plate outpacking rubber
Structure type, both improved the intensity of sealing valve port part, and reduced it and be lost and extend its service life, and it is close to improve valve port
The sealing performance of sealing；And the locating rod of diaphragm bottom plate setting so that diaphragm bottom plate can play orientation direction at valve port
The case where acting on, this solenoid valve diaphragm unit effectively prevent to deviate during exercise, and then improve the sealing performance of this product.
The utility model is suitable for heavy caliber step direct-acting type electromagnetic valve, can make the service life of solenoid valve and using pressure
Power is significantly increased, and greatly improves the performance of solenoid valve, to reduce the after-sales service expense of solenoid valve.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model solenoid valve diaphragm unit.
Fig. 2 is the structural schematic diagram of the utility model diaphragm.
Fig. 3 is the structural schematic diagram of the utility model diaphragm pressing plate.
Fig. 4 is the structural schematic diagram of the utility model sealing valve port part.
Fig. 5 is the structural schematic diagram of the utility model diaphragm bottom plate.
Fig. 6 is the structural schematic diagram of the utility model pilot valve mouth.
Fig. 7 is the structural representation sectional view that the utility model solenoid valve diaphragm unit is assemblied in valve body.
Reference sign：1, diaphragm pressing plate；2, diaphragm；3, sealing valve port part；4, diaphragm bottom plate；5, pilot valve mouth；6, bullet
Spring gasket；7, nut；11, the first positioning hole；21, sealing ring；22, circular arc anchor ring；23, balance hole；24, woven cloth；25,
Second positioning hole；31, steel plate；32, third positioning hole；41, locating rod；42, the 4th positioning hole；51, through-hole.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment cannot be used for limiting the scope of the utility model for illustrating the utility model.
Fig. 1 is the structural schematic diagram of the utility model solenoid valve diaphragm unit, major embodiment this solenoid valve diaphragm unit
It is made of diaphragm pressing plate 1, diaphragm 2, sealing valve port part 3, diaphragm bottom plate 4 and pilot valve mouth 5 and its connection between them is closed
System；Fig. 2 is the structural schematic diagram of the utility model diaphragm, reflects sealing ring 21, circular arc anchor ring 22, balance hole on diaphragm 2
23, the structures such as woven cloth 24, second positioning hole 25；Fig. 3 is the structural schematic diagram of the utility model diaphragm pressing plate, is embodied
The planform of diaphragm pressing plate 1 and the first positioning hole 11；Fig. 4 is the structural schematic diagram of the utility model sealing valve port part,
Reflect the structure composition and third positioning hole 32 of sealing valve port part 3；Fig. 5 is that the structure of the utility model diaphragm bottom plate is shown
It is intended to, embodies the quantity of locating rod 41 on diaphragm bottom plate 4 and the 4th positioning hole 42 and locating rod 41 and its in film
Distribution situation on piece bottom plate 4；Fig. 6 is the structural schematic diagram of the utility model pilot valve mouth, reflects the structure of pilot valve mouth 5 emphatically
Shape and through-hole 51；
Fig. 7 is the structural representation sectional view that the utility model solenoid valve diaphragm unit is assemblied in valve body, and emphasis embodies
Valve body a, valve deck b, plunger tube c, spool d, spring e and tension spring f and their connections between solenoid valve diaphragm unit are closed
System, and reflect the separation of the chamber inside solenoid valve and import g, outlet h, primary valve j.
The structure of the utility model solenoid valve diaphragm unit is as shown in Figure 1, the solenoid valve diaphragm unit includes diaphragm pressing plate
1, diaphragm 2, sealing valve port part 3, diaphragm bottom plate 4 and pilot valve mouth 5；Pilot valve mouth 5 from top to bottom sequentially passes through diaphragm pressing plate 1, diaphragm
2, sealing valve port part 3, diaphragm bottom plate 4, and locking is fixed by spring shim 6 and nut 7；Diaphragm pressing plate 1, diaphragm 2, valve port are close
Sealing 3, diaphragm bottom plate 4 and pilot valve mouth 5 are coaxial distribution.The utility model is using the above structure, close with independent valve port
Sealing so that diaphragm is not direct to be contacted with valve port, and not only the sealing performance of valve port is more preferable, but also reduces the impact force of diaphragm,
The service life for effectively increasing diaphragm to improve the service life of solenoid valve entirety, and allows the use pressure of solenoid valve
Higher, flow bigger.This product is suitable for heavy caliber step direct-acting type electromagnetic valve, can make service life and the use of solenoid valve
Pressure is significantly increased, and greatly improves the performance of solenoid valve, to reduce the after-sales service expense of solenoid valve.
Wherein, the shape of diaphragm pressing plate 1 is concave inward structure, is stamped and formed out using stainless steel, and its thickness is more than 2mm, makes
Obtaining diaphragm pressing plate 1 has higher intensity.
As shown in Fig. 2, in the present embodiment, circular arc anchor ring 22 that is co-axial and raising up, the circle are provided on diaphragm 2
There are one perforative balance holes 23 for setting on arc ring face 22；The outer diameter of diaphragm pressing plate 1 is less than the internal diameter of circular arc anchor ring 22.This practicality
It is novel that above-mentioned circular arc anchor ring is set on diaphragm, membrane ruggedness is both improved, reduces drawing high for diaphragm, and increase diaphragm
Telescopic displacement amount, to increase the aperture of solenoid valve so that the flow of solenoid valve increases.
As shown in Fig. 2, in the present embodiment, diaphragm 2 is internally provided with matched woven cloth 24.The utility model
Above-mentioned woven cloth is set in diaphragm, the intensity of diaphragm can be further strengthened, improves its service life.Wherein, diaphragm is
Made of rubber material, there is certain elastic expansion range and good reset capability；And the rubber of diaphragm is and volume
Woven fabric good bond.
As shown in Fig. 2, in the present embodiment, the outer ring of diaphragm 2 is provided with co-axial and integrally connected sealing ring 21, both
It can play the role of installation positioning so that assemble simpler convenience, and the stretching movement of diaphragm can be limited.
In the present embodiment, sealing valve port part 3 is that have good sealing performance made of rubber material.
As shown in figure 4, in the present embodiment, sealing valve port part 3 is internally provided with matched steel plate 31, the valve port
Sealing element 3 wraps steel plate 31 and securely pastes therewith.The sealing valve port part of the utility model uses the knot of steel plate outpacking rubber
Configuration formula had both improved the intensity of sealing valve port part, reduces it and is lost and extends its service life, and improves sealing valve port part
Sealing performance.Wherein, as shown in fig. 7, the outer diameter of steel plate 31 is more than the size of primary valve j, and the outer diameter of sealing valve port part 3
Less than the internal diameter of circular arc anchor ring.In addition, sealing valve port part 3, by the disposable compression molding of rubber, steel plate 31 and rubber securely glue
It closes.
As shown in figure 5, in the present embodiment, the bottom surface outer ring of diaphragm bottom plate 4 is provided with the locating rod 41 of connection in conjunction.
Locating rod is arranged in diaphragm bottom plate in the utility model so that diaphragm bottom plate can play the role of orientation direction at valve port, have
The case where effect prevents this solenoid valve diaphragm unit from deviating during exercise, and then improve the sealing performance of this product.Wherein, film
Piece bottom plate 4 is stainless steel plate punch forming, and steel plate thickness is not less than 2mm.
As shown in figure 5, in the present embodiment, locating rod 41 shares three, and three locating rods 41 are with the axle center of diaphragm bottom plate 4
Line is that the rounded array in axle center is uniformly distributed.Using the above structure, the stable triangular knot of 3 points of compositions is utilized in the utility model
Structure so that the guiding positioning of locating rod is both simple and stable.Wherein, as shown in fig. 7, the outer diameter of diaphragm bottom plate 4 is slightly less than valve port
Internal diameter, during diaphragm upper and lower displacement, 3 locating rods 41 in valve port, play the role of positioning and guiding always, to subtract
The offset of few diaphragm unit.In addition, the outside of locating rod 41 is the arcwall face coaxial with diaphragm bottom plate 4.
As shown in fig. 6, in the present embodiment, the centre of pilot valve mouth 5 is provided through the through-hole 51 of upper and lower ends, is used for electromagnetism
When the valve opening state, fluid is dredged for upper chamber to be depressured to it.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, the centre of diaphragm pressing plate 1 be provided with it is co-axial and
The centre of the first positioning hole 11 to match with pilot valve mouth 5, diaphragm 2 is provided with co-axial and matches with pilot valve mouth 5
The second positioning hole 25, the centre of sealing valve port part 3 is provided with third that is co-axial and matching with pilot valve mouth 5 and positions
The centre of mounting hole 32, diaphragm bottom plate 4 is provided with the 4th positioning hole 42 that is co-axial and matching with pilot valve mouth 5；It leads
Valve port 5 from top to bottom sequentially passes through the first positioning hole 11, the second positioning hole 25, third positioning hole the 32, the 4th
Locking is fixed by spring shim 6 and nut 7 after positioning hole 42.The utility model is using the above structure so that this product
Assembling it is simple, and the stabilization that is connected firmly.Wherein, the outer diameter on the top of pilot valve mouth 5 is more than the interior of the first positioning hole 11
Diameter prevents pilot valve mouth from the first positioning hole 11 directly through causing it that can not play the role of being fixedly connected；In addition, leading
The top side of valve port 5 is provided with co-axial spring buckling groove 52.
As shown in fig. 7, this solenoid valve diaphragm unit is installed between valve body a and valve deck b, diaphragm unit is located through film
The sealing ring 21 of 2 outer circle of piece positions (wherein, being provided with the positioning ring groove to match with sealing ring 21 on valve body a or valve deck b), valve
It can play the role of external seal after body a and valve deck b lockings, can also effectively limit the feelings that diaphragm 2 stretches offset at work
Condition occurs.A plunger tube c is equipped with above valve deck b, spool d, which is matched by spring e with the bottom end of plunger tube c, to be connect, spool d
Matched with the top of pilot valve mouth 5 by tension spring f and is connect；The bottom end of spool d is provided with the rubber seal to match with through-hole 51
Head；An electromagnetic valve coil is cased on plunger tube c.Wherein, it is provided with the cross aisle being mutually communicated up and down in spool d, risen
To the effect of internal voltage stabilizing.
Upper chamber and lower chambers are divided by diaphragm unit inside solenoid valve.
Valve body a is equipped with the outlets an import g and one h.When electromagnetic coil is not powered on, fluid enters from import g, passes through balance hole
23, fluid enters upper chamber, and pilot valve mouth 5 is closed at this time, and epicoele chamber pressure increases so that diaphragm 2 to bottom offset, from
And sealing valve port part 3 is made to squeeze closing primary valve j to bottom offset, solenoid valve is closed at this time；Because diaphragm 2 does not have
It is directly contacted with valve port, so the impact force of diaphragm 2 is smaller；And diaphragm 2 carries circular arc anchor ring 22, therefore in off position
When, the stretching of diaphragm 2 is also smaller.When electromagnetic coil is powered, spool d is shifted up so that the rubber seal head of the bottom end of spool d
The through-hole 51 of through-hole 51 far from pilot valve mouth 5, pilot valve mouth 5 is opened, and the fluid in upper chamber flows into primary valve j by through-hole 51
Interior, the pressure of upper chamber reduces, and diaphragm 2 shifts up under the action of pressure difference, drives sealing valve port part 3 simultaneously to upper
It moves, primary valve j is opened, and solenoid valve is in the open state at this time；Guide ring is protected always in primary valve j on diaphragm bottom plate 4 at this time
It has demonstrate,proved diaphragm 2 and membrane seal 3 does not shift；It is same because diaphragm 2 carries circular arc anchor ring 22, the stretching of diaphragm 2 is also very
It is small, while the displacement of diaphragm 2 is also big.
This product has the following advantages compared to existing flat membrane sheet sealing structure：
1, for solenoid valve under on and off both states, the stretching of diaphragm 2 is very little；And the film with circular arc anchor ring 22
Piece 2 increases the displacement of diaphragm 2, and the displacement of diaphragm 2 is exactly the aperture of solenoid valve, therefore the flow of solenoid valve can be made to add
Greatly；And the woven cloth of high intensity can also enhance membrane ruggedness；
2, diaphragm 2 is not contacted with primary valve j directly, reduces the impact force of diaphragm 2；
3, the independence and sealing valve port part 3 of enhancing keeps the sealing effect of diaphragm more preferable, is effectively protected the damage of diaphragm 2
It is bad, while the intensity of sealing valve port part 2 is more preferable, longer life expectancy；
4, the diaphragm pressing plate 1 of spill can enhance its intensity；
5, the diaphragm bottom plate 4 with guide ring ensure that diaphragm unit does not deviate under Fluid pressure impact；
6, the locating rod 41 of diaphragm bottom plate 4 can reduce impact of the fluid to diaphragm, the sealing effect of corresponding solenoid valve
More preferably, the service life of diaphragm 2 can also be longer；
6, this solenoid valve diaphragm unit can be such that the use pressure of solenoid valve is significantly increased, and be suitable for the flow of bigger.
It these are only preferred embodiments of the present invention, it is noted that for the ordinary skill people of the art
Member for, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of solenoid valve diaphragm unit, it is characterised in that：The solenoid valve diaphragm unit includes diaphragm pressing plate (1), diaphragm
(2), sealing valve port part (3), diaphragm bottom plate (4) and pilot valve mouth (5)；The pilot valve mouth (5) from top to bottom sequentially passes through pressing diaphragm
Plate (1), diaphragm (2), sealing valve port part (3), diaphragm bottom plate (4), and pass through spring shim (6) and the fixed locking of nut (7)；Film
Piece pressing plate (1), diaphragm (2), sealing valve port part (3), diaphragm bottom plate (4) and pilot valve mouth (5) are coaxial distribution.
2. solenoid valve diaphragm unit according to claim 1, it is characterised in that：It is provided on the diaphragm (2) same therewith
Axis and the circular arc anchor ring (22) to raise up, there are one perforative balance holes (23) for setting on the circular arc anchor ring (22)；It is described
The outer diameter of diaphragm pressing plate (1) is less than the internal diameter of circular arc anchor ring (22).
3. solenoid valve diaphragm unit according to claim 2, it is characterised in that：The diaphragm (2) be internally provided with
The woven cloth (24) to match.
4. solenoid valve diaphragm unit according to claim 3, it is characterised in that：The outer ring of the diaphragm (2) be provided with
Coaxial and integrally connected sealing ring (21).
5. solenoid valve diaphragm unit according to claim 1, it is characterised in that：The sealing valve port part (3) is by rubber
Made of material.
6. solenoid valve diaphragm unit according to claim 5, it is characterised in that：The inside of the sealing valve port part (3) is set
It is equipped with matched steel plate (31), which wraps steel plate (31) and securely paste therewith.
7. solenoid valve diaphragm unit according to claim 1, it is characterised in that：The bottom surface outer ring of the diaphragm bottom plate (4)
It is provided with the locating rod (41) of connection in conjunction.
8. solenoid valve diaphragm unit according to claim 7, it is characterised in that：The locating rod (41) shares three, should
Three locating rods (41) are uniformly distributed by the rounded array in axle center of the axial line of diaphragm bottom plate (4).
9. solenoid valve diaphragm unit according to claim 1, it is characterised in that：The centre of the pilot valve mouth (5) is provided with
Through the through-hole (51) of upper and lower ends.
10. according to claim 1 to 9 any one of them solenoid valve diaphragm unit, it is characterised in that：The diaphragm pressing plate (1)
Centre be provided with the first positioning hole (11) that is co-axial and matching with pilot valve mouth (5), the centre of the diaphragm (2)
It is provided with the second positioning hole (25) that is co-axial and matching with pilot valve mouth (5), the centre of the sealing valve port part (3)
It is provided with third positioning hole (32) that is co-axial and matching with pilot valve mouth (5), the centre of the diaphragm bottom plate (4) is set
It is equipped with the 4th positioning hole (42) that is co-axial and matching with pilot valve mouth (5)；Pilot valve mouth (5) from top to bottom sequentially passes through
After first positioning hole (11), the second positioning hole (25), third positioning hole (32), the 4th positioning hole (42)
Pass through spring shim (6) and the fixed locking of nut (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820436486.7U CN208024918U (en) | 2018-03-29 | 2018-03-29 | A kind of solenoid valve diaphragm unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820436486.7U CN208024918U (en) | 2018-03-29 | 2018-03-29 | A kind of solenoid valve diaphragm unit |
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| Publication Number | Publication Date |
|---|---|
| CN208024918U true CN208024918U (en) | 2018-10-30 |
Family
ID=63909637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820436486.7U Active CN208024918U (en) | 2018-03-29 | 2018-03-29 | A kind of solenoid valve diaphragm unit |
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| CN (1) | CN208024918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266558A (en) * | 2018-03-29 | 2018-07-10 | 余姚市三力信电磁阀有限公司 | A kind of solenoid valve diaphragm unit |
| CN110005860A (en) * | 2019-05-17 | 2019-07-12 | 余姚市永创电磁阀有限公司 | A kind of PFA material diaphragm unit and solenoid valve |
-
2018
- 2018-03-29 CN CN201820436486.7U patent/CN208024918U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266558A (en) * | 2018-03-29 | 2018-07-10 | 余姚市三力信电磁阀有限公司 | A kind of solenoid valve diaphragm unit |
| CN110005860A (en) * | 2019-05-17 | 2019-07-12 | 余姚市永创电磁阀有限公司 | A kind of PFA material diaphragm unit and solenoid valve |
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