DE1640840U - PLASTIC DIAPHRAGM VALVE. - Google Patents
PLASTIC DIAPHRAGM VALVE.Info
- Publication number
- DE1640840U DE1640840U DEK8007U DEK0008007U DE1640840U DE 1640840 U DE1640840 U DE 1640840U DE K8007 U DEK8007 U DE K8007U DE K0008007 U DEK0008007 U DE K0008007U DE 1640840 U DE1640840 U DE 1640840U
- Authority
- DE
- Germany
- Prior art keywords
- diaphragm valve
- membrane
- valve
- plastic
- plastic diaphragm
- Prior art date
- 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.)
- Expired
Links
- 229920003023 plastic Polymers 0.000 title claims description 7
- 239000004033 plastic Substances 0.000 title claims description 7
- 239000012528 membrane Substances 0.000 claims description 11
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004014 plasticizer 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
-
- 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
- F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
- F16K7/17—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanically-Actuated Valves (AREA)
Description
••Membranventil aus Kunststoff"•• Plastic membrane valve "
Eg ist bekannt in aggressive Flüssigkeiten führende Leitungen aus alkali- und säurefesten Kunststoffen Absperrorgan, wie z.B. Ventile, einzubauen, die aus dem gleichen Werkstoff bestehen. Als Kunststoff findet hierbei wegen seiner günstigen physikalischen Eigenschaften und leichten Verarbeitbarkeit vorzugsweise Polyvinylchlorid Anwendung·Eg is known to lead into aggressive liquids made of alkali and acid-resistant plastics shut-off device, such as e.g. valves made of the same material. As a plastic takes place here because of its favorable physical properties and easy processability preferably polyvinyl chloride application
Derartige Ventile wurden bisher aus entsprechend vorgeformten und bearbeiteten Teile durch Verschraubung miteinander verbunden. Diese Massnahse ist aber unwirtschaftlich und lässt die Möglichkeit des Entstehens von Undichtigkeiten offen.Such valves have previously been connected to one another by screwing from appropriately preformed and machined parts. However, this measure is uneconomical and leaves the Possibility of leakage open.
G-eniäss der Erfindung wird daher vorgeschlagen, den Ventilkörper aus Rohren, Platten und Formteilen aus Polyvinylchlorid durch Verschweissung der Einzelteile herzustellen. Ein derart geschweisstes Ventil ist wesentlich, billiger in der Fabrikation und an allen Verbindungsstellen vollkommen dicht.According to the invention, it is therefore proposed that the valve body Manufacture from pipes, plates and molded parts made of polyvinyl chloride by welding the individual parts. Such a welded one Valve is essential, cheaper to manufacture and completely tight at all junctions.
-2--2-
Blatt - 2 -Page 2 -
In einer Weiterbildung des Erfindungsgedankens besteht bei diesem Ventil die Membran mit der zugehörigen Druckplatte aus einem Stück, und zwar findet als Werkstoff hierbei vorteilhaft Polyäthylen Anwendung. Bas bisher für diese Zwecke benutzte weichgestellte Polyvinylchlorid ist in erheblichem Masse temperaturabhängig, so dass die Geschmeidigkeit der Membran bei tiefen Temperaturen erheblich nachlässt bezw. verschwindet. Ferner wird der Weichmacher mit der Zeit durch die Flüssigkeit herausgelöst, wodurch der Kunststoff gleichfalls seine Elastizität verliert. Bine solche Membran ist dann in diesem Zustande nicht mehr verwendbar, da sie zu Betriebsstörungen Anlass geben kann. Bei der erfindungsgemässen Verwendung von Polyäthylen als Werkstoff für derartige Membrane entfallen alle bisherigen Schwierigkeiten, da dieser Kunststoff nicht nur alkalien- und säurebeständig ist, sondern auch seine ursprüngliche Elastizität und Weichheit in dem praktisch vorkommenden Temperaturbereich beibehält.In a further development of the inventive concept, the membrane with the associated pressure plate consists of one valve in this valve Piece, namely polyethylene is advantageously used as the material here. Bas softened so far used for this purpose Polyvinyl chloride is temperature-dependent to a considerable extent, so that the flexibility of the membrane at low temperatures Temperatures significantly decreases respectively. disappears. Furthermore, the plasticizer is dissolved out by the liquid over time, whereby the plastic also loses its elasticity. Such a membrane can no longer be used in this state, as it can give rise to operational disruptions. In the inventive use of polyethylene as a material for This type of membrane eliminates all previous difficulties, as this plastic is not only resistant to alkalis and acids, but also retains its original elasticity and softness in the practically occurring temperature range.
In der Zeichnung ist ein Ausführungsbeispiel gemäss der Erfindung veranschaulicht, und zwar zeigen: In the drawing, an embodiment according to the invention is illustrated, namely show:
Pig. 1 einen senkrechten Längsschnitt durch das Ventil in geöffneter Stellung,Pig. 1 shows a vertical longitudinal section through the valve in opened position Position,
Jig. 2 einen senkrechten Längs schnitt durch das Ventil in der Verschlusetellung.Jig. 2 a vertical longitudinal section through the valve in the Locking position.
Per Ventilkörper 1 aus Polyvinylchlorid mit den Rohranschlüs-Via valve body 1 made of polyvinyl chloride with the pipe connections
Blatt - 3 -Sheet - 3 -
sen 2,3, ist durch den einechraubbaren Deckel 4 , In welchem die Spindel 5 geführt ist, verschlossen· Die Abdichtung erfolgt durch die zwischen dem Ventilkörpersitz 6 und dem Deckel 4 eingepresste Membrane 7 aus Polyäthylen. Diese Membrane besteht nit der Platte 8, in welcher der Kopf 9 der Ventilspindel drehbar geführt ist, aus einem Stück, so daso ctureh Drehen des Handrades Io je nach des Drehsinn der Spindel, die Membrane angehoben (Öffnung) oder gesenkt wird (Schliessung). Xn der öffnunsssteilung ißt der Eurchfluas über den 2ylindrischen Einsatz 11 freigegeben, während in der Yerschlusstellung die Membrane auf die Ringfläche 12 des zylindrischen Einsatzes gepresst wird und diesen abdichtet.sen 2, 3, is closed by the screwable cover 4, in which the spindle 5 is guided. The seal is made by the membrane 7 made of polyethylene pressed between the valve body seat 6 and the cover 4. This membrane consists of the plate 8, in which the head 9 of the valve spindle is rotatably guided, from one piece, so that turning the handwheel Io depending on the direction of rotation of the spindle, the membrane is raised (opening) or lowered (closing). In the opening division, the flow through the cylindrical insert 11 is released, while in the closed position the membrane is pressed onto the annular surface 12 of the cylindrical insert and seals it.
S chutsansprüche.Protection claims.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK8007U DE1640840U (en) | 1952-04-03 | 1952-04-03 | PLASTIC DIAPHRAGM VALVE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK8007U DE1640840U (en) | 1952-04-03 | 1952-04-03 | PLASTIC DIAPHRAGM VALVE. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1640840U true DE1640840U (en) | 1952-07-10 |
Family
ID=30458492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEK8007U Expired DE1640840U (en) | 1952-04-03 | 1952-04-03 | PLASTIC DIAPHRAGM VALVE. |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1640840U (en) |
-
1952
- 1952-04-03 DE DEK8007U patent/DE1640840U/en not_active Expired
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