CN109780291A - Anti- siphon valve - Google Patents
Anti- siphon valve Download PDFInfo
- Publication number
- CN109780291A CN109780291A CN201910202526.0A CN201910202526A CN109780291A CN 109780291 A CN109780291 A CN 109780291A CN 201910202526 A CN201910202526 A CN 201910202526A CN 109780291 A CN109780291 A CN 109780291A
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- Prior art keywords
- valve
- valve body
- briquetting
- valve rod
- valve plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 13
- 230000003467 diminishing effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 16
- 239000000446 fuel Substances 0.000 description 9
- 230000037452 priming Effects 0.000 description 9
- 239000000295 fuel oil Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The object of the present invention is to provide a kind of lower anti-siphon valves of valve opening pressure.To achieve the above object, the present invention adopts the following technical scheme: a kind of anti-siphon valve, including the valve body with inner cavity, the valve body is formed with body cavity, the inlet and liquid outlet being connected with body cavity are formed on the valve body, valve rod is equipped in the valve body, the valve rod upper end is fixed with valve plate, the valve rod lower end is fixed with seal assembly, body cavity is divided into first inner chamber and second inner chamber by the seal assembly, liquid passes sequentially through inlet, first inner chamber, liquid outlet is to export valve body, the second inner chamber is communicated with atmosphere, the valve plate is moved up to open liquid outlet, the valve plate is moved down to close liquid outlet, the inlet feed liquor is so that when hydraulically full in first inner chamber, the forced area of the seal assembly is greater than the forced area of valve plate.
Description
Technical field
The present invention relates to a kind of in the fuel loading system of ground oil storage tank or skid tank and self-priming fuel charger of arranging in pairs or groups
Anti- siphon valve.
Background technique
Finished fuel industry will use all kinds of ground oil storage tanks, in oil product transhipment transmission process to ensure oil tank at present
Interior storage fuel oil safety, can install anti-siphon valve in oil outlet pipe.When oil outlet valve invalidation or pipeline are any on flowline
When rupturing at one, anti-siphon valve can overcome siphonage caused by liquid level difference, avoid economy caused by fuel leakage
The generation of loss and environmental pollution.
Existing anti-siphon valve includes compressed spring and the valve piston reverse with siphon direction, and spring force is greater than highest liquid
Siphon pressure (F > Δ H ρ g S) in the case of potential difference, to avoid fuel oil by anti-siphon valve to leak.When under oil outlet pipe
When swimming self priming pump (self-priming fuel charger) starting, the negative pressure for pumping generation needs to overcome the difference of spring force and siphon pressure, just may be used
Anti- siphon valve is opened, realizes fuel delivery.The spring strength of anti-siphon valve needs and the land storage tank being applicable in and system of refueling
System matching, spring force are enough to overcome the generated siphon pressure when liquid level is at the highest notch in tank；But work as in tank at liquid level
When minimum point, siphon pressure becomes smaller, and spring force is constant, and the valve opening pressure of anti-siphon valve becomes larger at this time, that is,
Liquid resistance in self priming pump upstream increases, and limits flow system flow.
Summary of the invention
The object of the present invention is to provide a kind of lower anti-siphon valves of valve opening pressure.
To achieve the above object, the present invention adopts the following technical scheme: a kind of anti-siphon valve, including the valve with inner cavity
Body, the valve body are formed with body cavity, and the inlet and liquid outlet being connected with body cavity, institute are formed on the valve body
It states and is equipped with valve rod in valve body, the valve rod upper end is fixed with valve plate, and the valve rod lower end is fixed with seal assembly, the sealing group
Body cavity is divided into first inner chamber and second inner chamber by part, and liquid passes sequentially through inlet, first inner chamber, liquid outlet to export
Valve body, the second inner chamber are communicated with atmosphere, and the valve plate is moved up to open liquid outlet, and the valve plate is moved down to seal
Liquid outlet is closed, for the inlet feed liquor so that when hydraulically full in first inner chamber, the forced area of the seal assembly is greater than valve
The forced area of plate.
The pressure being subject to due to seal assembly is greater than the pressure that valve plate is subject to, seal assembly can band valve rod move down so that
Valve plate seals liquid outlet, so that valve of the present invention has the function of anti-siphon；When needing oil tank fuel-displaced, by open self priming pump with
Make that there is negative pressure at valve body liquid outlet, since valve body second inner chamber is connected with atmosphere, seal assembly and valve rod are in atmospheric pressure
It can be moved up under effect, so that valve plate opens liquid outlet.Difference is got between the compression area and valve plate compression area of seal assembly
Small, power required for negative pressure produced by self priming pump is smaller, and valve opening pressure provided by self priming pump also will be and siphon
Pressure is unrelated with constant.The smaller self priming pump of power can be used using the oil tank of valve of the present invention, and can be kept fuel-displaced smooth.
Preferably, being equipped with compressed spring in the first inner chamber, the compressed spring is set on valve rod, the valve body
The interior fixed part having positioned at compressed spring axial direction side, compressed spring axial direction one end offset with fixed part, the compression bullet
The spring axial direction other end offsets with seal assembly.
The setting of compressed spring can remain anti-siphon valve installation constantly sealing of the valve plate to liquid outlet, can be in oil tank
Sealing of the valve plate to liquid outlet when oil-free or few oily.Wherein it is possible to using weak spring, to reduce the burden of self priming pump.
Preferably, the seal assembly includes diaphragm, the diaphragm circumferential direction outer rim is fixed with valve body, in the middle part of the diaphragm
With the fixed linkage of valve rod.
The setting of diaphragm can reduce damping when valve rod axial movement, to further decrease the self priming pump valve to be generated
Cracking pressure.
Preferably, the valve plate is equipped with upper and lower perforative relief hole, thermal expansion relief valve is equipped in the relief hole.
In the case of a high temperature, the fuel oil in oil circuit can be thermally expanded because temperature increases, and will lead to the flowline of oil tank
Over-voltage is damaged or damages flowline downstream components, and the present invention thermally expands relief valve and can open in higher temperature, so that fuel oil is led
Oil tank is flowed back to, to protect flowline and downstream components.The suitable thermal expansion relief valve of selection according to actual needs, so that thermal expansion is let out
Pressure valve can be opened under value of pressure.
Preferably, the liquid outlet is that from top to bottom the diminishing structure of internal diameter, valve plate include valve plate top and valve
Plate lower part, at least described valve plate lower part are matched between the valve plate lower part and liquid outlet in outer diameter diminishing structure from top to bottom
Conjunction has sealing ring, and the sealing ring is fixed with valve body or valve plate；Valve plate top outer diameter is greater than under liquid outlet internal diameter and valve plate
Portion's outer diameter.
Wherein, the design of liquid outlet and valve plate is so as to improve sealing effect.Wherein, valve plate top outer diameter is greater than valve plate lower part
The design of outer diameter is passed down through liquid outlet with the shift motion for limiting valve rod to avoid valve plate.
Preferably, the seal assembly further includes the first briquetting and the second briquetting, the diaphragm, the first briquetting and second
Briquetting is each formed with the centre bore of cooperation valve rod, and first briquetting is fixed with the second briquetting with valve rod, is limited in the middle part of diaphragm
Between the first briquetting and the second briquetting, first briquetting is located in first chamber, and second briquetting is located at second chamber
It is interior.
Above-mentioned setting is so that the fixation and linkage of diaphragm and valve rod are more convenient.
Preferably, the valve rod is made of valve rod upper section, valve rod middle section and valve rod lower section, valve rod middle section diameter is big
In valve rod upper diameter and valve rod lower section diameter, the valve plate is formed with the helicitic texture matched with valve rod upper section, and described
The centre bore of one briquetting is through-hole, and the centre bore of second briquetting is threaded hole and is formed with valve rod lower section mutually matched
Helicitic texture, when valve rod both ends are screwed with valve plate and the second briquetting respectively, the valve rod middle section is formed with valve rod upper section
Step surface and valve plate lower end face contact, the step surface that the valve plate middle section is formed with valve rod lower section connects with the first briquetting upper surface
Touching；The valve body includes upper valve body and lower valve body, and the diaphragm circumferential direction outer rim is fixedly clamped in upper valve body lower end surface and lower valve body
Between upper surface.
Above-mentioned setting is so that the assembly of this valve components is more simple, conveniently.
Preferably, the fixed part is equipped with upper and lower perforative pilot hole, the valve rod slide fit is in the pilot hole.
Fixed part is applied not only to the support to compressed spring, is also used to the guiding to valve rod, to avoid the shaking of valve rod lower end.
The thickness of fixed part is set according to actual needs, is tilted to avoid valve rod with respect to valve axis.Fixed part has certain thickness,
It can be used for the upper limit of seal assembly, be torn to avoid compressed spring excess compression or diaphragm.
Preferably, the valve body successively includes valve body upper section, valve body middle section and valve body lower section, the valve plate position along axial direction
In in valve body upper section, being equipped with the liquid outlet between the valve body upper section and valve body middle section, the valve body middle section is equipped with the feed liquor
Mouthful, uniform intervals are set on the circumferential direction valve wall of valve body middle section several inlets in a ring, and the seal assembly is set to the valve
In body lower section.Above-mentioned setting is so that valve mechanism of the present invention is more simple.
Preferably, the seal assembly is formed with the lower convexity upwardly extended, the fixed part, which is formed with, to be extended downwardly
Upper protrusion, the both ends of the compressed spring be respectively sleeved at protrusion with lower convexity outer circumferential.
The present invention has the advantages that keep valve opening pressure smaller and constant.
Detailed description of the invention
Fig. 1 is a kind of cross-sectional view of the invention
Fig. 2 is a kind of structural schematic diagram of valve body of the invention；
Fig. 3 is a kind of cross-sectional view of valve body of the invention
Fig. 4 is a kind of structural schematic diagram of valve rod of the invention.
Wherein, 10- upper valve body；20- lower valve body；101- valve body upper section, 102- valve body middle section；103- valve body lower section；104-
Fixed part；11- inlet；12- liquid outlet；13- first inner chamber；14- second inner chamber；15- connecting hole；16- connecting line；17-
Upper protrusion；2- valve rod；21- valve rod upper section；22- valve rod middle section；23- valve rod lower section；3- valve plate；31- relief hole；32- sealing ring；
301- valve plate top；302- valve plate lower part；4- compressed spring；5- diaphragm, the first briquetting of 6-；61- lower convexity；The second briquetting of 7-；
8- thermally expands relief valve.
Specific embodiment
Below according to the drawings and specific embodiments, the invention will be further described.
Anti- siphon valve of the invention, for ground oil storage tank or skid tank and the fuel loading system for being collocated with self-priming fuel charger
In.
As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, anti-siphon valve of the invention includes the valve body with inner cavity, and valve body is formed with valve
Intracoelomic cavity is formed with the inlet 11 and liquid outlet 12 being connected with body cavity on valve body, is equipped with valve rod 2, valve rod 2 in valve body
Upper end is fixed with valve plate 3, and 2 lower end of valve rod is fixed with seal assembly, and body cavity is divided into 13 He of first inner chamber by seal assembly
Second inner chamber 14, liquid (fuel oil) pass sequentially through inlet 11, first inner chamber 13, liquid outlet 12 to export valve body, second inner chamber
14 communicate with atmosphere, and valve plate 3 is moved up to open liquid outlet 12, and valve plate 3 is moved down to close liquid outlet 12, work as inlet
For 11 feed liquors so that when hydraulically full in first inner chamber 13, the forced area of seal assembly is greater than the forced area of valve plate 3.
Valve body of the invention successively includes valve body upper section 101, valve body middle section 102 and valve body lower section 103, valve plate 3 along axial direction
In valve body upper section 101, the liquid outlet 12 is equipped between valve body upper section 101 and valve body middle section 102, valve body middle section 102 is equipped with
Several inlets 11, uniform intervals are set on the circumferential valve wall in valve body middle section 102 several inlets 11 in a ring, sealing group
Part is set in valve body lower section 103.Wherein, connecting hole 15 is provided on the circumferential valve wall of valve body lower section 103, in connecting hole 15 and second
Chamber 14 is connected to.
Fixed part 104 is equipped between valve body middle section 102 and valve body lower section 103, fixed part 104 makes valve body middle section equipped with several
The connecting line 16 that 102 first inner chamber is connected to the first inner chamber of valve body lower section 103.In the first inner chamber of valve body lower section 103
Equipped with compressed spring 4, compressed spring 4 is set on valve rod 2, and fixed part 104 is located at the axial upside of compressed spring 4, seal assembly
Positioned at the axial downside of compressed spring 4, the axial one end of compressed spring 4 offsets with fixed part 104, the axial other end of compressed spring 4 and
Seal assembly offsets.Wherein, upper and lower perforative pilot hole 18 is equipped at 104 center of fixed part, 2 slide fit of valve rod is in pilot hole 18
It is interior.
Seal assembly includes diaphragm 5, the first briquetting 6 and the second briquetting 7, diaphragm 5, the first briquetting 6 and the equal shape of the second briquetting 7
At the centre bore for having cooperation valve rod 2, the first briquetting 5 and the second briquetting 6 are fixed with valve rod 2, and the circumferential outer rim of diaphragm 5 and valve body are solid
It is fixed, 5 middle part of diaphragm and the fixed linkage of valve rod 2.It is limited between the first briquetting 5 and the second briquetting 6 in the middle part of diaphragm 5, first
Briquetting 5 is located in first chamber 13, and the second briquetting 6 is located in second chamber 14.Wherein, the diaphragm of the present embodiment is by rubber or cream
Glue material matter is made.First briquetting 5 is formed with the lower convexity 61 upwardly extended, and fixed part 104 is formed with the upper protrusion extended downwardly
17, the both ends of compressed spring 4 are respectively sleeved at raised 17 and 61 outer circumferential of lower convexity.
Valve rod 2 is made of valve rod upper section 21, valve rod middle section 22 and valve rod lower section 23, and 22 diameter of valve rod middle section is greater than on valve rod
21 diameters of section and 23 diameter of valve rod lower section, valve plate 3 are formed with the helicitic texture matched with valve rod upper section 21, the first briquetting 6
Centre bore is through-hole, and the centre bore of the second briquetting 7 is threaded hole and is formed with mutually matched helicitic texture with valve rod lower section 23,
When 2 both ends of valve rod are screwed with valve plate 3 and the second briquetting 7 respectively, the step in valve rod middle section 22 and the formation of valve rod upper section 21
The 6 upper end face contact of step surface and the first briquetting that face and 3 lower end face contact of valve plate, valve plate middle section 22 and valve rod lower section 23 are formed.
Wherein, valve body includes upper valve body 10 and lower valve body 20, and the circumferential outer rim of diaphragm 5 is fixedly clamped in 10 lower end surface of upper valve body and lower valve body
Between 20 upper surfaces, together with upper valve body 10 and lower valve body 20 are locked by fastener.Wherein, valve body upper section 101 and valve
Body middle section 102 and part valve body lower section constitute upper valve body 10, and another part valve body lower section constitutes lower valve body 20.
Valve plate 3 is equipped with upper and lower perforative relief hole 31, and thermal expansion relief valve 8 is equipped in relief hole 31.Liquid outlet 12 is
The diminishing structure of internal diameter from top to bottom, valve plate 3 include valve plate top 301 and valve plate lower part 302, valve plate lower part 302 be in by
Up to the diminishing structure of lower outer diameter, sealing ring 32 is combined between valve plate lower part 302 and liquid outlet 12, sealing ring 32 is arranged solid
It is scheduled in 302 circumferential direction of valve plate lower part, 301 maximum outside diameter of valve plate top is greater than 12 maximum inner diameter of liquid outlet and valve plate lower part 302 most
Big outer diameter.
Since the forced area of seal assembly is greater than the forced area of valve plate, seal assembly will drive valve rod by fluid pressure
It moves down, so that valve plate seals the liquid outlet of valve of the present invention, regardless of height of liquid level in oil tank, valve plate can be closed out always
Hydraulic fluid port.Since the present invention is provided with compressed spring, under the action of compressed spring, seal assembly has what is moved down to become always
Xiang Li is assisted by compressed spring, to guarantee valve plate to the sealing effect of liquid outlet.In fuel loading system of the invention from
Sucking pump need to only generate lesser negative pressure at valve body liquid outlet downstream just can make the intracorporal oil of valve that valve plate be pushed to rise, self priming pump institute
The cracking pressure for opening anti-siphon valve is smaller.The present invention has the advantages that keep valve opening pressure smaller and constant.
Claims (10)
1. a kind of anti-siphon valve, it is characterised in that including the valve body with inner cavity, the valve body is formed with body cavity, the valve
It is formed with the inlet and liquid outlet being connected with body cavity on body, valve rod is equipped in the valve body, the valve rod upper end is solid
Surely there is valve plate, the valve rod lower end is fixed with seal assembly, and body cavity is divided into first inner chamber and by the seal assembly
Two inner cavities, liquid pass sequentially through inlet, first inner chamber, liquid outlet to export valve body, and the second inner chamber is communicated with atmosphere, institute
It states valve plate to move up to open liquid outlet, the valve plate is moved down to close liquid outlet, and the inlet feed liquor is so that
When intracavitary hydraulically full in one, the forced area of the seal assembly is greater than the forced area of valve plate.
2. anti-siphon valve according to claim 1, it is characterised in that be equipped with compressed spring, the pressure in the first inner chamber
Contracting spring is set on valve rod, has the fixed part positioned at compressed spring axial direction side in the valve body, and the compressed spring is axial
One end offsets with fixed part, and the compressed spring axial direction other end offsets with seal assembly.
3. anti-siphon valve according to claim 1, it is characterised in that the seal assembly includes diaphragm, and the diaphragm is circumferential
Outer rim is fixed with valve body, fixes linkage with valve rod in the middle part of the diaphragm.
4. anti-siphon valve according to claim 1, it is characterised in that the valve plate is equipped with upper and lower perforative relief hole, institute
It states and is equipped with thermal expansion relief valve in relief hole.
5. anti-siphon valve according to claim 1, it is characterised in that the liquid outlet is that from top to bottom internal diameter is gradually reduced
Structure, valve plate includes valve plate top and valve plate lower part, and at least described valve plate lower part is in the diminishing knot of outer diameter from top to bottom
Structure, is combined with sealing ring between the valve plate lower part and liquid outlet, the sealing ring is fixed with valve body or valve plate；The valve plate top
Outer diameter is greater than liquid outlet internal diameter and valve plate lower outer diameter.
6. anti-siphon valve according to claim 3, it is characterised in that the seal assembly further includes the first briquetting and second
Briquetting, the diaphragm, the first briquetting and the second briquetting are each formed with the centre bore of cooperation valve rod, first briquetting and the second pressure
Block is fixed with valve rod, is limited between the first briquetting and the second briquetting in the middle part of diaphragm, first briquetting is located at first chamber
Interior, second briquetting is located in second chamber.
7. anti-siphon valve according to claim 6, it is characterised in that the valve rod is by valve rod upper section, valve rod middle section and valve rod
Lower section is constituted, and valve rod middle section diameter is greater than valve rod upper diameter and valve rod lower section diameter, and the valve plate is formed with and valve rod
The helicitic texture that upper section matches, the centre bore of first briquetting are through-hole, and the centre bore of second briquetting is threaded hole
And it is formed with mutually matched helicitic texture with valve rod lower section, when valve rod both ends are screwed with valve plate and the second briquetting respectively
When, the step surface and valve plate lower end face contact, the valve plate middle section and valve rod lower section in the valve rod middle section and the formation of valve rod upper section
The step surface of formation and the first briquetting upper end face contact；The valve body includes upper valve body and lower valve body, the diaphragm circumferential direction outer rim
It is clamped and fixed between upper valve body lower end surface and lower valve body upper surface.
8. anti-siphon valve according to claim 2, it is characterised in that the fixed part is equipped with upper and lower perforative pilot hole,
The valve rod slide fit is in the pilot hole.
9. anti-siphon valve according to claim 1, it is characterised in that the valve body successively includes valve body upper section, valve along axial direction
Body middle section and valve body lower section, the valve plate are located in valve body upper section, and the liquid out is equipped between the valve body upper section and valve body middle section
Mouthful, the valve body middle section is equipped with the inlet, and uniform intervals are set to valve body middle section circumferential direction valve wall to several inlets in a ring
On, the seal assembly is set in the valve body lower section.
10. anti-siphon valve according to claim 2, it is characterised in that the seal assembly be formed with upwardly extend down it is convex
It rises, the fixed part is formed with the upper protrusion extended downwardly, and it is convex under that the both ends of the compressed spring are respectively sleeved at protrusion
Play outer circumferential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202526.0A CN109780291A (en) | 2019-03-18 | 2019-03-18 | Anti- siphon valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202526.0A CN109780291A (en) | 2019-03-18 | 2019-03-18 | Anti- siphon valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109780291A true CN109780291A (en) | 2019-05-21 |
Family
ID=66488246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910202526.0A Pending CN109780291A (en) | 2019-03-18 | 2019-03-18 | Anti- siphon valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109780291A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087519A (en) * | 2021-11-05 | 2022-02-25 | 新乡航空工业(集团)有限公司 | Multifunctional valve assembly for pump |
| TWI762208B (en) * | 2021-02-23 | 2022-04-21 | 主典興業股份有限公司 | Deep-sea water siphon device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1998056A (en) * | 1933-01-24 | 1935-04-16 | William F Naatz | Balanced check valve |
| US4312376A (en) * | 1980-05-23 | 1982-01-26 | Transamerica Delaval Inc. | Pressure-sustaining valve |
| CN202139038U (en) * | 2011-06-27 | 2012-02-08 | 北京长吉加油设备有限公司 | Return oil preventing non-return valve |
| EP3242062A2 (en) * | 2016-04-12 | 2017-11-08 | Risbridger Ltd | Anti-syphon valve for controlling the flow of fluid through a conduit |
| CN209762384U (en) * | 2019-03-18 | 2019-12-10 | 张家港坦力机电设备有限公司 | Anti-siphon valve |
-
2019
- 2019-03-18 CN CN201910202526.0A patent/CN109780291A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1998056A (en) * | 1933-01-24 | 1935-04-16 | William F Naatz | Balanced check valve |
| US4312376A (en) * | 1980-05-23 | 1982-01-26 | Transamerica Delaval Inc. | Pressure-sustaining valve |
| CN202139038U (en) * | 2011-06-27 | 2012-02-08 | 北京长吉加油设备有限公司 | Return oil preventing non-return valve |
| EP3242062A2 (en) * | 2016-04-12 | 2017-11-08 | Risbridger Ltd | Anti-syphon valve for controlling the flow of fluid through a conduit |
| CN209762384U (en) * | 2019-03-18 | 2019-12-10 | 张家港坦力机电设备有限公司 | Anti-siphon valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI762208B (en) * | 2021-02-23 | 2022-04-21 | 主典興業股份有限公司 | Deep-sea water siphon device |
| CN114087519A (en) * | 2021-11-05 | 2022-02-25 | 新乡航空工业(集团)有限公司 | Multifunctional valve assembly for pump |
| CN114087519B (en) * | 2021-11-05 | 2023-01-03 | 新乡航空工业(集团)有限公司 | Multifunctional valve assembly for pump |
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