Micrometric metering device
First Claim
1. A micrometric metering device comprising a metering valve body, an inlet for material to be metered, an outlet for the metered material and a metering valve mounted inside said body between said inlet and said outlet and capable of being opened or closed, wherein said metering valve comprises a fixed plate provided with a plane surface and equipped with at least one duct communicating with said outlet for metered material and a slide valve provided with a plane face disposed to bear on said plane surface of the fixed plate, this slide valve comprising at least one passage arranged so as to permit the flow of the material to be metered towards said duct of the fixed plate, when the slide valve is in one of the positions corresponding to the opening of the metering valve and to stop this flow when it is in one of the positions corresponding to the closing of this valve, and said passage of the slide valve comprises at least one profiled recess formed in at least one of the outside faces of this slide valve, connecting said plane face to said opposite face.
1 Assignment
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Accused Products
Abstract
It comprises a metering valve (11) mounted inside a body (12) provided with an inlet (13) and an outlet (14). The inlet for material (13) is formed in a block (15) housed in a cavity of the body (12) and fixed to the latter by screws (16). The body (12) is provided with a cylindrical cavity (18) obturated by a lateral cover (19) fixed to the body (12) by screws (20). The cavity (18) contains a pusher composed of a first part (21) associated with driving means (22) and of a second part (23) associated with a return spring (24). The valve comprises a slide valve (33) comprising an upper surface (34), a plane lower surface (35) and a traversing conduit (36) formed between the upper surface (34) and the lower surface (35). This slide valve (33) is displaced in a sliding manner on a plate (37) provided with two traversing ducts (38) which communicate with the outlet (14) for the metered material.
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Citations
13 Claims
- 1. A micrometric metering device comprising a metering valve body, an inlet for material to be metered, an outlet for the metered material and a metering valve mounted inside said body between said inlet and said outlet and capable of being opened or closed, wherein said metering valve comprises a fixed plate provided with a plane surface and equipped with at least one duct communicating with said outlet for metered material and a slide valve provided with a plane face disposed to bear on said plane surface of the fixed plate, this slide valve comprising at least one passage arranged so as to permit the flow of the material to be metered towards said duct of the fixed plate, when the slide valve is in one of the positions corresponding to the opening of the metering valve and to stop this flow when it is in one of the positions corresponding to the closing of this valve, and said passage of the slide valve comprises at least one profiled recess formed in at least one of the outside faces of this slide valve, connecting said plane face to said opposite face.
- 2. The device as claimed in claim I, wherein said profiled recess has a cross section at least approximately in the form of a V.
Specification