Process-oriented clamping of a diaphragm assembly

Abstract

The invention relates to a diaphragm pump comprising a diaphragm assembly and a diaphragm retrieval device comprising a tensile bar, said diaphragm assembly comprising a diaphragm and a diaphragm retaining device which secures said diaphragm, wherein the diaphragm assembly and the tensile bar are force-fittingly interconnected by means of a magnetic force of adhesion.

1 . A diaphragm pack for a diaphragm pump, comprising:
 at least one diaphragm-holding element having a first connection section,   a diaphragm having at least one diaphragm layer,   a clamping element having a second connection section, wherein the diaphragm is sectionally arranged between the connection sections of the diaphragm-holding element and the clamping element,   a guide element projecting from the diaphragm-holding element, and.   a fastening means for connecting the clamping element in a threadless manner to the guide element of the diaphragm-holding element, wherein the diaphragm is braced between the connection sections by a clamping force, and wherein the clamping force is not set by the fastening means.   
     
     
         2 . The diaphragm pack of  claim 1 , wherein the first connection section or the second connection section comprises depressions arranged in the form of concentric circles about a center point of the diaphragm-holding element or of the clamping element. 
     
     
         3 . The diaphragm pack of  claim 1 , wherein at least one diaphragm layer of the diaphragm is produced from a polytetrafluoroethylene-based material. 
     
     
         4 . The diaphragm pack of  claim 1 , wherein the diaphragm and the clamping element each comprise a cutout such that the diaphragm and the clamping element are plugged onto the guide element and are guided by the latter in two movement axes. 
     
     
         5 . The diaphragm pack of  claim 1 , wherein the guide element forms a receiving collar for receiving the clamping element. 
     
     
         6 . The diaphragm pack of  claim 1 , wherein the clamping element is connected to the guide element by welding, adhesive bonding, crimping and/or pinning. 
     
     
         7 . The diaphragm pack of  claim 6 , wherein the clamping element, in the connected state, forms together with the guide element of the diaphragm-holding element a groove for a weld seam, wherein the groove is formed on a side of the clamping element that faces away from the diaphragm. 
     
     
         8 . The diaphragm pack of  claim 1 , wherein the guide element is connected to the clamping element in a region spaced apart by at least the thickness of the diaphragm in the fixed state from the connection section for the guide element-side end of the diaphragm-holding element. 
     
     
         9 . A method for producing a diaphragm pack, comprising:
 a) providing a diaphragm-holding element having a first connection section and a guide element projecting from the first connection section;   b) providing a diaphragm having at least one diaphragm layer and a cutout corresponding to the guide element;   c) plugging the diaphragm onto the guide element to locate the diaphragm into abutment with the first connection section;   d) providing a clamping element having a cutout corresponding to the guide element, and plugging the clamping element onto the guide element, and then locating the clamping element into abutment with the diaphragm;   e) fixing the diaphragm-holding element, the diaphragm and the clamping element by connecting the clamping element to the guide element to provide the diaphragm pack.   
     
     
         10 . The method of  claim 9 , wherein a clamp force used to connect the clamping element to the guide element is matched to the desired process conditions for the use of the diaphragm pack. 
     
     
         11 . The use of a diaphragm pack of  claim 8  in a diaphragm pump, wherein a clamp force used to connect the clamping element to the guide element is predetermined by the process conditions for the diaphragm pump. 
     
     
         12 . The diaphragm pack of  claim 1 , wherein the first connection section and the second connection section each comprises a plurality of depressions arranged in the form of concentric circles about a center point of the diaphragm-holding element or the clamping element. 
     
     
         13 . The diaphragm pack of  claim 2 , wherein at least one diaphragm layer of the diaphragm is produced from a polytetrafluoroethylene-based material. 
     
     
         14 . The diaphragm pack of  claim 12 , wherein at least one diaphragm layer of the diaphragm is produced from a polytetrafluoroethylene-based material. 
     
     
         15 . The diaphragm pack of  claim 12 , wherein the diaphragm and the clamping element each comprise a cutout such that the diaphragm and the clamping element are plugged onto the guide element. 
     
     
         16 . The diaphragm pack of  claim 15 , wherein the guide element forms a receiving collar for receiving the clamping element. 
     
     
         17 . The diaphragm pack of  claim 15 , wherein the clamping element is connected to the guide element by welding, adhesive bonding, crimping and/or pinning. 
     
     
         18 . The diaphragm pack of  claim 15 , wherein the clamping element, in the connected state, forms together with the guide element of the diaphragm-holding element a groove for a weld seam, wherein the groove is formed on a side of the clamping element that faces away from the diaphragm. 
     
     
         19 . The diaphragm pack of  claim 18 , wherein the guide element is connected to the clamping element in a region spaced apart by at least the thickness of the diaphragm in the fixed state from the connection section for the guide element-side end of the diaphragm-holding element.