IL27661A - Valves - Google Patents

Description

C O H E N Z B D E K & S P I S B A C H Begd. Patent Attorneys 2 , Levoutin Stx., P.O.B.1169 Tel-Aviv PATENTS & DESIGNS ORDINANCE 16391/67 I, Johannes Bemadus Batelband* a Dutch subjeot of 1 Jan de Jagerlaan, Laag-Keppel, She Netherlands, do hereby deolare the nature of this invention and in what manner the same is to be performed, to be partioularly described in and bp e following statementt- This invention relates to a valve the housing of which is provided with an insert forming a partition between the inflow side and the outflow side in the housing and said partition on both sides merges in an annular wall extending in longitudinal direction of the housing and having flow passages and being surrounded by a sleeve-like diaphragm which at both ends is secured in the housing and on the outer side of which a chambe is formed in which pressure fluid may be admitted as has been described in British Patent 617.183* Wi h said known valve the annular wall of the insert extending on both sides of the partition constitutes an integral body with the partition and the flow passages are formed by axial slots in the annular wall* With said construction of the insert the passages are mostly obtained by a milling cutter* but said construction has the drawback that it requires much labou and well rounded edges at the passages particularly at the inner side of the annular wall of the insert cannot be obtained. In this connection it is to be noted that sharp edges of the passages at the inner side of the annular wall will cause turbulences in the flowing fluid resulting in a pressure loss* Hie invention has for its object to improve said known valve and according to the invention the annular wall of the insert at least at one side of the partition is constituted by bars extending In longitudinal direction of the housing and into a ring of elastic material provided at the circumference of the partition and said bars at one end being supported in the adjacent end wall of the housing* As said bars do not require any working the manufacture of the insert is very simple and moreover the advantage is obtained that by Sharp edges are formed at the slots obtained between the bare* so that the flow conditions at the slots are very favourable* For the material of the bars not only metal but also a chemically resistant synthetic material may be sed* With a suitable embodiment of the valve according to the invention the partition is hollow and each side wall of the partition is united with the adjacent end piece of the housing and the elastio circumferential ring of the partition is clamped between the side walls thereof* the invention will be further described with referenoe to the accompanying drawing, showing three embodiments of the valve aooording to the invention* In the drawing fig* 1 is a longitudinal section of a valve aooording to the invention in closed position and fig* 2 is a eross-seotional view of the valve taken on line II-II In fig* 1.

Figs* 3 and 4 eaoh show half a longitudinal seotioa of a valve aooording to a second and tttrd embodiment respctively* She housing of the valve consists of two end parts 1 and a more or loss cylindrical intermediate part 2 and said parts being olampod together by elamping bolts 9 distributed along the circumference of the oasing* S e easing contains an insert constituting a partition between the inflo side and the outflow side of the easing and being provided at both sides with an annular wall* Said partition oonsists of two halves 4 whioh with the embodiment shown in figs* t and 2 eaoh are united by ribs 5 with the adjacent end part 1 f the housing* She bolts 3 also serve to seoure a diaphragm ? in the housing and to this end the diaphragm is provided with flanges 3· A pressure fluid is supplied to the outer side of the diaphragm 7 through one or more holes 9 whereby the diaphragm is forced Inwards* With the embodiment shown in figs* 1 and 2 tho parti* tion formed by the halves 4 is embraced by an elastio ring 10 e.g. of rubber and being damped with the inwards projecting rim 11 between the halves 4.also by the bolto 3» Bars 13 are inserted in circular recesses 12 at both side faces of the ring 10 and the other end of said ba s is supported in the recesses of ring 14 also consisting of elastic material e.g. rubber. The rings 14 are placed on a shoulder 15 of the adjacent end part 1 of the easing* With the embodiment shown in fig* 3 the bars 13 at the outflow side of the partition are united with the adjacent hal 4 of the partition* At the inflow side of the partition several bars 13 are supported in the elastio oiroumferential ring 10 of the partition and the remaining bare here/also are united with the adjacent half 4 of the partition, so that they extend through the ring 10· Between both halves 4 of the partition a sealing ring 16 is provided* With the embodiment shown in fig* 4 both halves 4 of the partition are embraced by an elastio olroumferential ring 10 in whioh at least oertain of the bars 13 arranged at both sides of the partition are supported and the remaining bars 13 united with the adjacent half 4 of the partition extend through the ring 10* Both with the embodiment shown in fig* 3 and that shown in fig* 4 the olamplng bolts 3 are looated at the outer side of the intermediate part 2 of the housing* In closed position of the valve as shown in the drawing the middle part of the diaphragm 7 is seated on the outer oiroum-ferenoe of the elastio ring or rings 10» whereby an efficient seal of the diaphragm on the insert in olosed position of the valve is secured*

Claims (3)

Ρ,Α. No* 27661A

1. WHAT XS CLAIMED ISi 1« A valve, the housing f which is provided wit an Insert forming a partition between the inflow side and the outflow side of the housing and at its circumference merges in an annular wall having on either side of the partition flow passages and being surrounded by a aleeve-like diaphragm which at both ends is secured in the housing and on the outer side of which a chamber is formed* in which pressure fluid may be admitted* characterized in that the annular wall of the Insert at least at one side of the partition and at least for the greater part is constituted by separate* round or rounded bars extending in axial direction and projecting with one of their ends into a ring of elastie material provided at the circumference of the partition and said bars at their other end being supported in he adjacent end wall of the housing*

2. Hm A valve as claimed in claim 1 characterized in that the partition is hollow and subdivided into two parts by a plane perpendicular to the axis of the housing* each part of the partition being united with the adjacent end piece of the housing and the elastie circumferential ring of the partition being clamped between the two parts of the partitlon*

3. * A valve as claimed in claim 1* characterized in that some of the bars at least at one side of the partition are united with said partition* h A valve* substantially as herein described with reference to the accompanying drawing* DATED THIS 20th day of March* 1 67*