DE2106368A1 - Throttle valve with a molded plastic body and method for making the same - Google Patents

Description

Patent attorneys Dipi.-ing. Walter Meissner Dipi.-ing. Herbert Tischer

1 BERLIN 33, Herbertstrasse 22 Telephone: 8 87 72 37 - Wired word: Invention Berlin Postscheckkonto: W. Meissner, Berlin West 122 82 Bank account: W. Meissner, Berliner Bank A.-Q., Depka 36, Berlln-Halensee, Kurfüretendamm 130, Account No. 95 716

MUNICH

1 BERLIN 33 (GRUNEWALD), HerbartstraS 22

Affair 24

APPLICATIONS MECANIQUES ET ROBINETTERIE INDUSTRIELLE, AMRI 188 bis, rue de Charenton, 75-Paris 12 °, France

Throttle valve with a molded plastic body and Method of making the same

The invention relates to valves of the so-called throttle valve type and in particular valves of this type in which the valve body is obtained by deforming a blastomer. The invention also relates to a method for manufacturing such valves.

Specifically outlined, the invention relates to valves of the so-called Throttle valve type and in particular throttle valves with a supple seat, e.g. made of rubber. It is particularly in connection with the use of aggressive fluids It is of great interest that the valve and its axis represent only a single component and such a construction prevents any deterioration of the valve caused by penetration of the liquid between the actual valve body and the assigned axis. Previously, such an arrangement required a metal body made of two parts, and this technical solution is susceptible to damage and expensive to manufacture.

The invention is now based on the object of eliminating these disadvantages associated with the prior art.

Briefly outlined, the throttle valve according to the invention has a pliable seat, a valve pin, the axis of which is made in one piece is and a valve body made of plastomers, which is molded onto these components arranged in a corresponding manner

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According to the invention it is possible to use a one-piece To use a throttle valve made of a non-corrosive metal such as stainless steel or others without difficulty £ special steel can be made. The invention has the advantage of using a one-piece body which is very inexpensive can be made available and in an aggressive medium, be it liquid or gaseous, practically no changes is subject to the proviso that the plastomer in is appropriately selected accordingly.

The subject of the invention also enables radial forces - resistance to internal pressure - precisely around the pliable To pick up the seat by using two clamps, which can be made of metal rings, so that it is a simple and economical embodiment, with none Difficulties or complications arise in the manufacture of the throttle valve according to the invention.

The invention relates, inter alia, to a throttle valve of the specified type Art and a method of making the same, which is also very simple and economical.

According to the invention results in the unexpected and surprising advantage that the total cost accounts in the case of throttle valves for aggressive liquids of the above-pin 9/10, and f it can be a conventional exchange for the purpose of working-up of the U-pin be provided in the manufacturing plant, so that in the throttle valves known up to now, the value of the body has completely precluded this.

An embodiment of the invention is shown in the drawing and is described in more detail below. Show it:

Fig. 1 to 4 vertical axial sections through the arrangement, wherein four successive manufacturing phases for a corresponding throttle valve are shown;

FIGS. 5 and 6 show corresponding sections along the line V-V of Fig. 6 and along the line VI-VI of Flg. 5 and show the final production in the form loaded accordingly.

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Figure 1 shows in axial section the pliable seat 1, the represents a rotating body with the axis XX with a U-cross section, and has a diameter YY. There are two channels 2 and 3 for the ends 4 and 5 of the valve pin 6 are provided, and according to FIG. 2 the same is arranged in the seat 1. The seat 1 has two recesses 7 and 8, which, see FIG. 3, each have a clamp Record 11 and 12, which are formed by a circularly deformed flat iron or pipe section. A socket 13 with a flanged plug 14 and a socket 15 are provided, the two sockets are turned from a bronze pipe, for example. The same are see FIG. 4, arranged at the ends 4 and 5 of the valve pin 6.

With reference to FIGS. 5 and 6, the arrangement according to the 4 introduced into a mold consisting of two molds 16 and 17 which are held together by means of bolts 18. The two Columns 16 and 17 are then placed on the two sides of the seat 1, 6 and delimit around the same the volume provided for the body 19, in which channels for mounting screws in the form of four spikes 21 are provided. To the upper part there are air vents 22 and a tube 23, whereby an evacuation of the air during the introduction of the plastomer is made possible by a large vertical channel 24 and a channel 25 which ends under the said volume * The filling old Plastomerem can also, depending on the circumstances can be brought about by a simple action of gravity and / or sucking in air at 23 and / or applying pressure at 26.

Suitable plastics such as e.g. Araldite used.

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Claims (4)

Claims [1.! Throttle valve with a pliable seat, a valve pin, which has two ends, and two seat clamps and two sockets are provided for the valve pin ends, characterized in that, that after arranging the appropriate components a plastomer is poured, which represents the body (19) of the throttle valve. 2. Throttle valve according to claim 1, characterized in that the molding takes place in a form of two molds (16, 17), which are arranged on the sides of the seat (1) and the volume provided for the body (19) with reserve space (21) for the Passage limited by mounting screws, as well as air vents (22) in the upper part and an air evacuation tube (23) provided are, on which suction takes place if necessary, as well as a feed channel (24) and lower feed channel (25) for the plastomer are provided, which is optionally pressed in by means of compressed air. 3. Throttle valve according to claims 1 or 2, characterized in that that the elastomer is a plastic of the Araldit type. 4. Throttle valve according to one of the preceding claims, characterized in that before the deformation of the pliable seat (1) one after the other with the valve pin (6) and then the two clamps (11, 12) of the seat (1) and then the sockets (13, 15) and then the deformation of the plastic / to Implementation is coming. DidF # developed # old DiplJÄV / .A'tsner 10 9 8 3 4/1215 ORIGINAL INSPECTED Blank page