CN218624591U - Lower membrane head of small-displacement diaphragm compressor - Google Patents
Lower membrane head of small-displacement diaphragm compressor Download PDFInfo
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- CN218624591U CN218624591U CN202222930364.2U CN202222930364U CN218624591U CN 218624591 U CN218624591 U CN 218624591U CN 202222930364 U CN202222930364 U CN 202222930364U CN 218624591 U CN218624591 U CN 218624591U
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Abstract
The utility model relates to a diaphragm compressor, specifically a membrane head under little discharge capacity diaphragm compressor, including cylindric membrane head body down, be close to its edge and evenly set up a plurality of fixed screws along the axial, on the terminal surface in membrane head body down, be close to fixed screw sets up the shallow slot that holds the bulge loop of membrane head and get into, the shallow slot bottom that is close to the shallow slot edge sets up first O type circle embedded groove, sets up second O type circle embedded groove with the alternating shallow slot bottom of first O type circle embedded groove, the shallow slot bottom in second O type circle embedded groove scope sets up oil side indent cambered surface; an oil cylinder mounting counter bore is formed in the center of the outer end face of the lower membrane head body, a plurality of oil distribution holes communicated with the oil cylinder mounting counter bore are formed in the circumferential outer circular face of the lower membrane head body along the radial direction, and a plurality of oil distribution micro-holes with openings in the concave cambered surface on the oil side are uniformly formed in the hole bottom of the oil cylinder mounting counter bore and the hole wall of each oil distribution hole; the outer opening of the oil distribution hole is blocked by a plug. The oil distribution disc is integrated on the lower membrane head body, and the whole volume and weight are maximally compressed.
Description
Technical Field
The utility model relates to a diaphragm compressor specifically is a membrane head under little discharge capacity diaphragm compressor.
Background
The diaphragm compressor is a positive displacement compressor with special structure, has the characteristics of large compression ratio, good sealing performance and no pollution of compressed gas by lubricating oil and other solid impurities, and consists of a driving mechanism, a cylinder diaphragm head part, a lubricating oil system, a gas pipeline part, a crankcase and other parts. Chinese utility model patent publication No. CN 206487607U discloses a diaphragm compressor join in marriage food tray structure, including joining in marriage the food tray body, join in marriage the food tray body can dismantle connect in the cylinder cap with between the cylinder body, it is equipped with the diaphragm to join in marriage food tray body top, it is equipped with and joins in marriage the oilhole to join in marriage food tray body upper surface, join in marriage oilhole density in week by join in marriage oilhole central point and put to the edge and reduce gradually and distribute, the cylinder cap with form the air cavity between the diaphragm, the cylinder body with form the oil pocket between the diaphragm. However, because the lower plane of the oil distribution disc needs to simultaneously seal the hydraulic oil inside the oil cylinder and the hydraulic oil outside the oil distribution disc, it is difficult to keep the hydraulic oil and the hydraulic oil on the same plane, and the overall sealing is affected.
SUMMERY OF THE UTILITY MODEL
For overcoming one of technical problem or the technical problem that prior art exists, the utility model discloses a membrane head under little discharge capacity diaphragm compressor, the technical scheme who takes is:
a lower membrane head of a small-displacement membrane compressor comprises a cylindrical lower membrane head body, wherein a plurality of fixed screw holes are uniformly formed near the edge of the lower membrane head body along the axial direction, a shallow groove for accommodating a convex ring of an upper membrane head to enter is formed in the inner end surface of the lower membrane head body and near the fixed screw holes, a first O-shaped ring embedded groove is formed in the bottom of the shallow groove near the edge of the shallow groove, a second O-shaped ring embedded groove is formed in the bottom of the shallow groove alternate to the first O-shaped ring embedded groove, and an oil side concave arc surface is formed at the bottom of the shallow groove in the range of the second O-shaped ring embedded groove; an oil cylinder mounting counter bore is formed in the center of the outer end face of the lower membrane head body, a plurality of oil distribution holes communicated with the oil cylinder mounting counter bore are formed in the circumferential outer circular face of the lower membrane head body along the radial direction, and a plurality of oil distribution micro-holes with openings in the concave cambered surface on the oil side are uniformly formed in the hole bottom of the oil cylinder mounting counter bore and the hole wall of each oil distribution hole; the outer opening of the oil distribution hole is blocked by a plug.
Further, the ratio of the diameter of the lower membrane head body to the height thereof is greater than or equal to 3.
Furthermore, a plurality of flow guide radiation grooves corresponding to the oil distribution holes are uniformly formed in the surface of the oil side concave cambered surface by taking the circle center of the oil cylinder mounting counter bore as the center, the inner ends of the flow guide radiation grooves are close to the oil distribution micropores, the outer ends of the flow guide radiation grooves are close to the second O-shaped ring embedded groove, and all the flow guide radiation grooves are communicated with the flow guide annular groove concentric with the second O-shaped ring embedded groove.
Furthermore, a first O-shaped sealing ring is embedded in the first O-shaped ring embedding groove and is abutted to the convex ring of the upper membrane head.
Further, a second O-shaped sealing ring is embedded in the second O-shaped ring embedding groove and is abutted against the oil side surface of the diaphragm.
Furthermore, the opening of the outer side of the oil distribution hole is provided with a conical thread which is in threaded connection with a conical plug.
Compared with the prior art, the utility model discloses an integrated food tray of joining in marriage on membrane head body down, thereby the thickness that has compressed whole aircraft nose has reduced holistic volume and weight, thereby need not connect and the sealed risk of leaking of joining in marriage the food tray of joining in marriage after the integration, and the working chamber is close to the heat dissipation that is favorable to the membrane head apart from the surface. The compression of whole volume weight maximize after the integration, integrated processing has increased overall structure's intensity and sealing performance.
Drawings
Fig. 1 is a schematic top view of the lower membrane head body of the present invention.
Fig. 2 is a schematic bottom view of the lower membrane head body of the present invention.
Fig. 3 is a cross-sectional view at B-B in fig. 1.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A low-displacement diaphragm compressor lower diaphragm head as shown in figures 1-3,
a lower membrane head of a small-displacement membrane compressor comprises a cylindrical lower membrane head body 200, wherein 16 fixed screw holes 201 are uniformly formed near the edge of the lower membrane head body 200 along the axial direction, a shallow groove 202 for allowing a convex ring of an upper membrane head to enter is arranged on the inner end surface of the lower membrane head body 200 and near the fixed screw holes 201, a first O-shaped ring embedded groove 203 is formed at the bottom of the shallow groove near the edge of the shallow groove 202, a second O-shaped ring embedded groove 204 is formed at the bottom of the shallow groove at the interval with the first O-shaped ring embedded groove 203, and an oil side inward concave arc surface 205 is formed at the bottom of the shallow groove in the range of the second O-shaped ring embedded groove 203; an oil cylinder mounting counter bore 206 is formed in the center of the outer end face of the lower membrane head body 200, 8 oil distribution holes 207 communicated with the oil cylinder mounting counter bore 206 are formed in the circumferential outer circumferential surface of the lower membrane head body 200 along the radial direction, and a plurality of oil distribution micro-holes 208 with openings on the oil side concave cambered surface 205 are uniformly formed in the hole bottoms of the oil cylinder mounting counter bore 206 and the hole walls of the oil distribution holes 207; the outer opening of the oil distribution hole 207 is blocked by a plug. The ratio of the diameter of the lower membrane head body 200 to the height thereof is equal to or greater than 3. 8 guide radiation grooves 209 corresponding to the oil distribution holes 207 are uniformly formed on the surface of the oil side concave arc surface 205 by taking the circle center of the oil cylinder mounting counter bore 206 as the center, the inner end of each guide radiation groove 209 is close to the oil distribution micro hole 208, the outer end of each guide radiation groove 209 is close to the second O-shaped ring embedded groove 204, and guide annular grooves 210 concentric with the second O-shaped ring embedded groove 204 are communicated with all the guide radiation grooves 209. A first O-shaped sealing ring is embedded in the first O-shaped ring embedding groove 203 and is abutted to the convex ring of the upper membrane head. A second O-ring is inserted into the second O-ring insertion groove 204, and the second O-ring abuts against the oil-side surface of the diaphragm. The opening of the outer side of the oil distribution hole 207 is provided with a conical thread which is in threaded connection with a conical plug.
The integrated food tray of joining in marriage on the membrane head body down, thereby the thickness that has compressed whole aircraft nose has reduced holistic volume and weight, thereby need not connect and sealed food tray of joining in marriage after the integration and reduced the risk of leaking, the working chamber is favorable to the heat dissipation of membrane head closer to the surface. After integration, the whole volume and the weight are maximally compressed, and the strength and the sealing performance of the whole structure are improved through integrated processing.
The invention is not described in detail in the prior art or in the common general knowledge.
Claims (6)
1. The utility model provides a membrane head under little discharge capacity diaphragm compressor, includes cylindric lower membrane head body (200), is close to its edge and evenly offers a plurality of fixed screw (201), its characterized in that along the axial: a shallow groove (202) for allowing a convex ring of the upper membrane head to enter is arranged on the inner end face of the lower membrane head body (200) and close to the fixed screw hole (201), a first O-shaped ring embedded groove (203) is formed at the bottom of the shallow groove close to the edge of the shallow groove (202), a second O-shaped ring embedded groove (204) is formed at the bottom of the shallow groove alternate to the first O-shaped ring embedded groove (203), and an oil side concave arc surface (205) is formed at the bottom of the shallow groove within the range of the second O-shaped ring embedded groove (204); an oil cylinder mounting counter bore (206) is formed in the center of the outer end face of the lower membrane head body (200), a plurality of oil distribution holes (207) communicated with the oil cylinder mounting counter bore (206) are formed in the circumferential outer circular face of the lower membrane head body (200) along the radial direction, and a plurality of oil distribution micro-holes (208) with openings on the oil side concave cambered surfaces (205) are uniformly formed in the hole bottoms of the oil cylinder mounting counter bore (206) and the hole walls of the oil distribution holes (207); the outer opening of the oil distribution hole (207) is blocked by a plug.
2. A small displacement diaphragm compressor lower diaphragm head according to claim 1, wherein: the ratio of the diameter of the lower membrane head body (200) to the height thereof is more than or equal to 3.
3. A low head of a small displacement diaphragm compressor as claimed in claim 1, wherein: a plurality of flow guide radiation grooves (209) corresponding to the oil distribution holes (207) are uniformly formed in the surface of the oil side concave arc surface (205) by taking the circle center of the oil cylinder mounting counter bore (206) as the center, the inner ends of the flow guide radiation grooves (209) are close to the oil distribution micro holes (208), the outer ends of the flow guide radiation grooves are close to the second O-shaped ring embedded groove (204), and all the flow guide radiation grooves (209) are communicated with the flow guide annular groove (210) concentric with the second O-shaped ring embedded groove (204).
4. A low head of a small displacement diaphragm compressor as claimed in claim 1, wherein: a first O-shaped sealing ring is embedded in the first O-shaped ring embedding groove (203) and is abutted to the convex ring of the upper membrane head.
5. A low head of a small displacement diaphragm compressor as claimed in claim 1, wherein: a second O-shaped sealing ring is embedded in the second O-shaped ring embedding groove (204) and is abutted against the oil side surface of the diaphragm.
6. A low head of a small displacement diaphragm compressor as claimed in claim 1, wherein: the opening of the outer side of the oil distribution hole (207) is provided with a conical thread which is in threaded connection with a conical plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222930364.2U CN218624591U (en) | 2022-11-04 | 2022-11-04 | Lower membrane head of small-displacement diaphragm compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222930364.2U CN218624591U (en) | 2022-11-04 | 2022-11-04 | Lower membrane head of small-displacement diaphragm compressor |
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| Publication Number | Publication Date |
|---|---|
| CN218624591U true CN218624591U (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222930364.2U Active CN218624591U (en) | 2022-11-04 | 2022-11-04 | Lower membrane head of small-displacement diaphragm compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201718A (en) * | 2023-04-10 | 2023-06-02 | 烟台东德氢能技术有限公司 | Upper and lower membrane head structure assembly of diaphragm compressor |
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2022
- 2022-11-04 CN CN202222930364.2U patent/CN218624591U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201718A (en) * | 2023-04-10 | 2023-06-02 | 烟台东德氢能技术有限公司 | Upper and lower membrane head structure assembly of diaphragm compressor |
| CN116201718B (en) * | 2023-04-10 | 2024-04-23 | 烟台东德氢能技术有限公司 | Upper and lower membrane head structure assembly of diaphragm compressor |
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