ITRM20110140U1 - INJECTION VALVE EQUIPPED WITH SPRING IN PVDF PLASTIC MATERIAL, USED AS AN ACCESSORY OF ELECTROMECHANICAL DOSING PUMPS - Google Patents
INJECTION VALVE EQUIPPED WITH SPRING IN PVDF PLASTIC MATERIAL, USED AS AN ACCESSORY OF ELECTROMECHANICAL DOSING PUMPSInfo
- Publication number
- ITRM20110140U1 ITRM20110140U1 ITRM20110140U ITRM20110140U1 IT RM20110140 U1 ITRM20110140 U1 IT RM20110140U1 IT RM20110140 U ITRM20110140 U IT RM20110140U IT RM20110140 U1 ITRM20110140 U1 IT RM20110140U1
- Authority
- IT
- Italy
- Prior art keywords
- spring
- injection valve
- valve
- plastic material
- pvdf
- Prior art date
Links
- 238000002347 injection Methods 0.000 title claims description 19
- 239000007924 injection Substances 0.000 title claims description 19
- 239000002033 PVDF binder Substances 0.000 title claims description 10
- 229920002981 polyvinylidene fluoride Polymers 0.000 title claims description 10
- 239000000463 material Substances 0.000 title claims description 5
- 239000004033 plastic Substances 0.000 title claims description 5
- 229920003023 plastic Polymers 0.000 title claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000009757 thermoplastic moulding Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- -1 DYNEON Polymers 0.000 description 1
- 229920006368 Hylar Polymers 0.000 description 1
- 229920006370 Kynar Polymers 0.000 description 1
- 229910000792 Monel Inorganic materials 0.000 description 1
- 229920006373 Solef Polymers 0.000 description 1
- 229920006371 Sygef Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000016571 aggressive behavior Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
- F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
- Reciprocating Pumps (AREA)
- Springs (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Descrizione del modello di utilità dal titolo: VALVOLA DI INIEZIONE EQUIPAGGIATA CON MOLLA IN MATERIALE PLASTICO PVDF, UTILIZZATA QUALE ACCESSORIO DI POMPE DOSATRICI ELETTROMECCANICHE; Description of the utility model entitled: INJECTION VALVE EQUIPPED WITH SPRING IN PVDF PLASTIC MATERIAL, USED AS AN ACCESSORY OF ELECTROMECHANICAL DOSING PUMPS;
La presente innovazione è sostanzialmente relativa al settore degli accessori delle pompe dosatrici ad azionamento elettromeccanico per il dosaggio di liquidi. The present invention substantially relates to the sector of accessories for electromechanically operated metering pumps for dosing liquids.
Tali pompe dosatrici sono utilizzate per il dosaggio di additivi di vario tipo. Esse sono dispositivi che trovano largo impiego in numerose applicazioni sia industriali che domestiche quali ad esempio: These dosing pumps are used for dosing various types of additives. They are devices that are widely used in numerous industrial and domestic applications such as:
Trattamento di acque potabili Drinking water treatment
Piscine pubbliche e private Public and private swimming pools
Autolavaggi Car washes
Lavanderie Laundries
Impianti di trattamento galvanico Galvanic treatment plants
Industrie chimiche Chemical industries
Torri di raffreddamento Cooling towers
Ferti-irrigazione Ferti-irrigation
Industria agroalimentare Agri-food industry
Ecc. Etc.
A corredo di queste apparecchiature vengono forniti accessori quali ad esempio la valvola di iniezione. Accessories such as the injection valve are supplied with this equipment.
Più specificamente, l’oggetto della presente innovazione è sostanzialmente l’applicazione in una valvola di iniezione unidirezionale di una molla a compressione di forma elicoidale, ottenuta mediante processo di stampaggio per iniezione, materiale termoplastico, nello specifico viene utilizzato polivindenfluoruro (PVDF), commercialmente denominato KYNAR, SOLEF, DYNEON, HYLAR, SYGEF, ecc. More specifically, the object of the present invention is substantially the application in a unidirectional injection valve of a compression spring with a helical shape, obtained by injection molding process, thermoplastic material, specifically polyvinyl fluoride (PVDF) is used, commercially named KYNAR, SOLEF, DYNEON, HYLAR, SYGEF, etc.
Questo materiale è conosciuto e ampiamente utilizzato nel settore delle pompe dosatrici per l’eccellente resistenza all’aggressione chimica specialmente nei confronti degli acidi forti in un ampio range di temperatura (-40°C – 150°C) con ottime caratteristiche di resistenza meccanica. This material is known and widely used in the dosing pump sector for its excellent resistance to chemical aggression, especially against strong acids in a wide temperature range (-40 ° C - 150 ° C) with excellent mechanical resistance characteristics.
Una migliore comprensione del modello si avrà con la seguente descrizione dettagliata e con riferimento alle figure allegate, che illustrano, a solo titolo esemplificativo e non già limitativo, una preferita forma realizzativa e applicativa del trovato. A better understanding of the model will be obtained with the following detailed description and with reference to the attached figures, which illustrate, by way of example only and not limiting, a preferred embodiment and application of the invention.
Nella figura 1 è rappresentato uno schema tipico di installazione di una pompa dosatrice elettromeccanica F con accessori, dove l’oggetto della presente innovazione è la valvola di iniezione unidirezionale indicata con B. Figure 1 shows a typical installation diagram of an electromechanical metering pump F with accessories, where the object of this innovation is the one-way injection valve indicated with B.
Nella figura 2 è rappresentato un esemplare di molla in PVDF. Figure 2 shows an example of a PVDF spring.
La figura 3 è un complessivo della valvola di iniezione unidirezionale. Figure 3 is a one-way injection valve assembly.
La figura 4 è una sezione della valvola di iniezione unidirezionale. Figure 4 is a section of the one-way injection valve.
Le figure 5 e 6, relative ad una variante della molla dotata di elementi di battuta o spessori antiimpaccamento, mostrano tale variante in configurazione ibera e compressa Figures 5 and 6, relating to a variant of the spring equipped with stop elements or anti-packing shims, show this variant in a free and compressed configuration.
Nell’applicazione che si descrive, la funzione della molla M è quella di creare una forza di contrasto all’apertura del clapet nella valvola di iniezione unidirezionale B, questo viene normalmente realizzato mediante una sfera S. Questa forza, nell’ambito applicativo della valvola di non ritorno, si traduce in una pressione sulla linea di mandata della pompa. Normalmente la mandata delle pompe dosatrici elettromeccaniche viene installata sulla tubazione A dell’impianto da trattare mediante la valvola di iniezione B, la cui funzione è quella di impedire il ritorno del fluido nella pompa dosatrice stessa. Un’altra importante funzione svolta dalla valvola di iniezione B e quella di fornire una contropressione sulla mandata della pompa dosatrice F, è questa circostanza si realizza mediante l’impiego della molla M che, premendo sulla sfera S, genera per l’appunto questa spinta. In the application described, the function of the spring M is to create a contrast force on the opening of the clapper in the one-way injection valve B, this is normally achieved by means of a ball S. This force, in the application field of the valve non-return, results in a pressure on the delivery line of the pump. Normally the delivery of the electromechanical dosing pumps is installed on the pipe A of the system to be treated by means of the injection valve B, whose function is to prevent the return of the fluid into the dosing pump itself. Another important function performed by the injection valve B and that of providing a counter pressure on the delivery of the metering pump F, is this circumstance is achieved by using the spring M which, by pressing on the ball S, generates precisely this thrust. .
Nelle figure 5 e 6, è mostrata una variante M1 di detta molla M. Detta variante è particolarmente indicata per eliminare i problemi di impacchettamento della molla M1 in materiale plastico rispetto alle normali molle metalliche. Vantaggiosamente, tale variante è facilmente ottenibile con il processo di produzione per stampaggio termoplastico. Figures 5 and 6 show a variant M1 of said spring M. Said variant is particularly suitable for eliminating the problems of packing the spring M1 in plastic material with respect to normal metal springs. Advantageously, this variant can be easily obtained with the production process by thermoplastic molding.
Con riferimento alla geometria in esame, a puro titolo esemplificativo, nella tabella seguente sono riportati i valori di forza che sviluppa la molla in funzione crescente della freccia, sono altresì elencati i rispettivi valori di pressione risultante in base al diametro della sfera di contrasto. With reference to the geometry in question, purely by way of example, the following table shows the force values that the spring develops as an increasing function of the arrow, the respective resulting pressure values are also listed on the basis of the diameter of the contrasting sphere.
Tabella valori di forza e pressione L molla Freccia Carico P – D9,5 mm mm [N] [BAR] 25,00 0,00 0,00 0,00 24,00 1,00 0,72 0,08 23,00 2,00 1,43 0,19 22,00 3,00 2,13 0,31 21,00 4,00 2,83 0,44 Table of force and pressure values L spring Arrow Load P - D9.5 mm mm [N] [BAR] 25.00 0.00 0.00 0.00 24.00 1.00 0.72 0.08 23.00 2.00 1.43 0.19 22.00 3.00 2.13 0.31 21.00 4.00 2.83 0.44
20,00 5,00 3,52 0,59 19,00 6,00 4,20 0,74 18,00 7,00 4,88 0,87 17,00 8,00 5,55 1,00 16,00 9,00 6,88 1,08 20.00 5.00 3.52 0.59 19.00 6.00 4.20 0.74 18.00 7.00 4.88 0.87 17.00 8.00 5.55 1.00 16, 00 9.00 6.88 1.08
Grafico caratteristico della molla in PVDF Characteristic graph of the PVDF spring
Caratteristica Molla PVDF Feature PVDF spring
700,00 700.00
600,00 600.00
500,00 500.00
400,00 400.00
300,00 300.00
200,00 200.00
100,00 100.00
0,00 0.00
0,00 2,00 4,00 6,00 8,00 10,00 0.00 2.00 4.00 6.00 8.00 10.00
Defless ione (mm) Deflection (mm)
I vantaggi derivanti dall’applicazione della The advantages deriving from the application of the
particolare molla su l’accessorio per pompe dosatrici particular spring on the accessory for dosing pumps
elettromeccaniche valvola di iniezione fondo si electromechanical bottom injection valve yes
possono così riassumere: can summarize as follows:
- l’elemento elastico molla in materiale - the elastic material spring element
plastico resistente alla corrosione corrosion resistant plastic
rappresenta un indubbio vantaggio represents an undoubted advantage
nell’utilizzo di questo dispositivo nel in the use of this device in the
dosaggio di fluidi chimicamente aggressivi, dosage of chemically aggressive fluids,
quali ad esempio gli acidi forti; such as strong acids;
- il dispositivo equipaggiato con la molla in - the device equipped with the spring in
PVDF presenta una caratteristica di PVDF has a feature of
resistenza alla corrosione praticamente corrosion resistance practically
omogenea, perché costituito di particolari ottenuti dalla stessa materia prima; homogeneous, because it consists of details obtained from the same raw material;
- attraverso l’impiego di molle in PVDF è possibile evitare l’uso, sempre nell’ambito del dosaggio di fluidi corrosivi, di leghe metalliche molto costose, quali ad esempio quelle di nichel (HASTELLOY, MONEL, INCONEL, ecc); - through the use of PVDF springs it is possible to avoid the use, again in the context of dosing corrosive fluids, of very expensive metal alloys, such as nickel (HASTELLOY, MONEL, INCONEL, etc.);
- la molla che equipaggia la valvola di iniezione viene prodotta mediante un processo di stampaggio termoplastico, che è molto economico ed è adatto a sviluppare alti volumi produttivi. - the spring that equips the injection valve is produced by means of a thermoplastic molding process, which is very economical and is suitable for developing high production volumes.
- proprio in virtù del fatto che la molla viene ottenuta mediante stampaggio è possibile realizzare, sempre nell’ambito dell’elemento molla, forme costruttive con spirale a passo variabile anziché costante, per differenziare sia la curva caratteristica che la geometria. - la flessione della molla può essere limitata, sempre grazie alla tecnologia dello stampaggio, mediante la realizzazione di diverse forme costruttive quali ad esempio quella a pianta ovale, quadrata, poligonale, ecc. - precisely by virtue of the fact that the spring is obtained by molding, it is possible to create, again within the spring element, construction forms with a spiral with variable pitch instead of constant, to differentiate both the characteristic curve and the geometry. - the bending of the spring can be limited, again thanks to the molding technology, through the realization of different construction forms such as the oval, square, polygonal plan, etc.
Elenco parti principali mostrate nelle figure: A. Conduttura; G. Serbatoio Main parts list shown in the figures: A. Pipeline; G. Tank
B. Valvola di iniezione H. Filtro di fondo C. Valvola di contro I. Sonda di livello pressione M. Molla in PVDF B. Injection valve H. Foot filter C. Back valve I. Pressure level probe M. Spring in PVDF
D. Manometro M1. Molla con elementi E. Valvola di sfioro di battuta D. M1 pressure gauge. Spring with E elements. Limit relief valve
F. Pompa dosatrice S. Sfera F. Dosing pump S. Sfera
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRM20110140 ITRM20110140U1 (en) | 2011-09-08 | 2011-09-08 | INJECTION VALVE EQUIPPED WITH SPRING IN PVDF PLASTIC MATERIAL, USED AS AN ACCESSORY OF ELECTROMECHANICAL DOSING PUMPS |
PCT/IT2012/000267 WO2013035119A1 (en) | 2011-09-08 | 2012-09-04 | Valve equipped with plastic spring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRM20110140 ITRM20110140U1 (en) | 2011-09-08 | 2011-09-08 | INJECTION VALVE EQUIPPED WITH SPRING IN PVDF PLASTIC MATERIAL, USED AS AN ACCESSORY OF ELECTROMECHANICAL DOSING PUMPS |
Publications (1)
Publication Number | Publication Date |
---|---|
ITRM20110140U1 true ITRM20110140U1 (en) | 2013-03-09 |
Family
ID=44900040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITRM20110140 ITRM20110140U1 (en) | 2011-09-08 | 2011-09-08 | INJECTION VALVE EQUIPPED WITH SPRING IN PVDF PLASTIC MATERIAL, USED AS AN ACCESSORY OF ELECTROMECHANICAL DOSING PUMPS |
Country Status (2)
Country | Link |
---|---|
IT (1) | ITRM20110140U1 (en) |
WO (1) | WO2013035119A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX2018003522A (en) | 2015-09-25 | 2018-09-11 | Sca Hygiene Prod Ab | Pump with a polymer spring. |
WO2017050390A1 (en) | 2015-09-25 | 2017-03-30 | Sca Hygiene Products Ab | Pump for dispensing fluids |
WO2018177519A1 (en) | 2017-03-29 | 2018-10-04 | Essity Hygiene And Health Aktiebolag | Plastomer spring with captive valve |
US10627001B2 (en) | 2018-06-29 | 2020-04-21 | Sulzer Mixpac Ag | Check valve system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4613738A (en) * | 1985-02-19 | 1986-09-23 | Savillex | Microwave heating digestion vessel |
US5848605A (en) * | 1997-11-12 | 1998-12-15 | Cybor Corporation | Check valve |
JP3375930B2 (en) * | 2000-03-06 | 2003-02-10 | 日本ピラー工業株式会社 | Check valve |
DE202010010502U1 (en) * | 2010-07-21 | 2010-10-21 | Prominent Dosiertechnik Gmbh | spring element |
-
2011
- 2011-09-08 IT ITRM20110140 patent/ITRM20110140U1/en unknown
-
2012
- 2012-09-04 WO PCT/IT2012/000267 patent/WO2013035119A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2013035119A1 (en) | 2013-03-14 |
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