The present invention relates to the field of high rotation speed vacuum pumps, which are fastened to and connected to a structure such as a vacuum enclosure or a pipe to generate a hard vacuum. It consists in an annular fixing flange including holes cooperating with headed bolts to fasten a vacuum
The present invention relates to the field of high rotation speed vacuum pumps, which are fastened to and connected to a structure such as a vacuum enclosure or a pipe to generate a hard vacuum. It consists in an annular fixing flange including holes cooperating with headed bolts to fasten a vacuum pump to a structure. The flange comprises an upper ring and a lower ring cooperating to clamp the end of the pump body between the upper ring and the lower ring, and at least one first cavity in a face of the upper ring that is in a plane perpendicular to that of the face of the upper ring intended to come into contact with the wall of the structure. The invention also consists in a fixing system comprising an annular flange disposed coaxially with the pump body around the inlet orifice of the pump. At least one second cavity in the face of the end of the pump body in contact with a face of the upper ring is coupled with the first cavity to form a housing, and at least one flexible material stud inserted into the housing.
대표청구항▼
The invention claimed is: 1. A system of rings for fixing a vacuum pump to a wall of a structure the body of the pump having an end capable of being clamped by the system of rings, said system of rings including bolt holes adapted to cooperate with headed bolts for fastening the vacuum pump to the
The invention claimed is: 1. A system of rings for fixing a vacuum pump to a wall of a structure the body of the pump having an end capable of being clamped by the system of rings, said system of rings including bolt holes adapted to cooperate with headed bolts for fastening the vacuum pump to the structure with the system of rings pressed against the wall, characterized in that the system of rings comprises: a lower ring and an upper ring cooperating to clamp the end of the pump body between the upper ring and the lower ring, the upper ring including a contact face that is intended to come into contact with the wall of the structure and an annular face perpendicular to the contact face and adapted to be installed parallel to and in contact with a face of the end of the pump body said annular face having at least one cavity formed therein, said cavity being separate from the bolt holes, and at least one flexible material stud inserted into each said cavity. 2. A system for fixing a vacuum pump to a wall of a structure, comprising a system of rings disposed coaxially with an end of the pump body around the inlet orifice of the pump and including bolt holes adapted to cooperate with headed bolts for fastening the vacuum pump to the structure with the system of rings pressed against the wall, characterized in that: the system of rings comprises an upper ring and a lower ring cooperating to clamp the end of the pump body between the upper ring and the lower ring, wherein there is at least one first cavity, separate from the boll holes, in a face of the upper ring for installation parallel to and in contact with a face of the end of the pump body, and at least one second cavity, separate from any bolt holes, in the face of the end of the pump body, the first cavity being coupled with the second cavity, and the space formed by the coupled cavities being a stud housing, and at least one flexible material stud inserted into the stud housing. 3. A fixing system according to claim 2, wherein the first cavity is in a face of the upper ring that is in a plane perpendicular to that of the face of the upper ring intended to come into contact with the wall of the structure. 4. A fixing system according to claim 2, wherein the housing has a circular section in a plane perpendicular to the axis of the pump body. 5. A fixing system according to claim 2, wherein the housing has an oblong section in a plane perpendicular to the axis of the pump body. 6. A fixing system according to claim 2, wherein the cavities forming the housing when coupled are of rounded shape with different radii of curvature for each of the cavities. 7. A fixing system according to claim 2, wherein the stud is made of an elastomer. 8. A fixing system according to claim 7, wherein the elastomer is chosen from polysiloxanes, polychloroprenes and their copolymers, homopolymers and copolymers of isoprene, and homopolymers and copolymers of isobutylene. 9. A method of fixing a vacuum pump to a wall of a structure by means of a fixing system comprising a system of rings disposed coaxially with the pump body around the inlet orifice of the pump and including bolt holes adapted to cooperate with headed bolts to fasten the vacuum pump to the structure with the system or rings pressed against the wall, characterized in that the system of rings includes an upper ring and includes a lower ring consisting of two half-rings and in that the method comprises the following steps: the upper ring is placed around the end of the pump body from above, the upper ring including at least one first cavity, separate from the bolt holes, in a face of the upper ring placed in contact with a face of the end of the pump body, the upper ring is place in contact with and aligned with the face of the end of pump body so that the first cavity is coupled to a second cavity, separate from any bolt holes in the face of the end of the pump body, the space formed by the coupled cavities being, a stud housing, a stud is inserted into the stud housing from below, each half-ring constituting a lower ring is placed around the end of the pump body under the upper ring, the upper ring and the lower ring are assembled by bolts, the assembly comprising the system of rings around the pump body is fixed to the wall of the structure by means of headed bolts. 10. The fixing system according to claim 5, wherein the housing with an oblong section is fitted with a stud of corresponding oblong section. 11. A fixing system according to claim 2, wherein the cavities forming the housing have a section in a plane perpendicular to the axis of the pump body which is a rounded shape with different radii of curvature for each of the cavities. 12. A fixing system according to claim 2, wherein the cavities each have a generally cylindrical shape with the axis of each cylinder parallel to said contacting faces of the upper ring and end of the pump body, the cavities forming a housing when coupled which has a section of rounded shape in the plane perpendicular to the axes of the cylinders, with different radii of curvature in the section for each of the cavities.
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이 특허에 인용된 특허 (20)
Crawford,Charles K., Alternative method for sealing all-metal vacuum joints.
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