CN217950622U - Piston structure for prolonging service life of air compressor - Google Patents
Piston structure for prolonging service life of air compressor Download PDFInfo
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- CN217950622U CN217950622U CN202221539746.6U CN202221539746U CN217950622U CN 217950622 U CN217950622 U CN 217950622U CN 202221539746 U CN202221539746 U CN 202221539746U CN 217950622 U CN217950622 U CN 217950622U
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- leather cup
- valve plate
- air compressor
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Abstract
The utility model provides a piston structure for prolonging the service life of an air compressor, which comprises an eccentric wheel, a connecting rod, a piston, a bearing, a leather cup, a pressure ring, a valve block and a screw; the connecting rod and the piston are of an integral structure; one end of the connecting rod is connected with an eccentric shaft on one side of the eccentric wheel through a bearing, and a shaft hole on the other side of the eccentric wheel is used for connecting with an output shaft of a motor; the piston is arranged in the cylinder body; the outer ring of the top of the piston is provided with a circle of pressing groove, the pressing ring presses the bottom wall of the leather cup in the pressing groove of the outer ring of the piston, and the side wall of the leather cup is used for elastically contacting with the inner wall of the cylinder body; the piston is provided with an air inlet hole which penetrates through the piston; one end of the valve plate is fixed on the upper surface of the piston through a screw, and the other end of the valve plate is naturally pressed on one end of the air inlet hole on the upper surface of the piston. The utility model discloses convenient assembling, and long service life.
Description
Technical Field
The utility model belongs to the technical field of air compressor and specifically relates to an increase piston structure in air compressor life-span.
Background
In the medical air compressor industry, a traditional piston type air compressor comprises a cylinder, a piston positioned in the cylinder, a connecting rod connected with the piston and extending out of the outer side of the cylinder, and a crank connected and fixed at one end of the connecting rod; the piston top sets up a gland, establishes the screw hole on the gland, and it is peripheral at the piston to press the leather cup through the gland, and passes gland connection to the piston through the screw and fix.
The existing piston structure is complex to assemble, and the friction force and the deformation tension born by the leather cup are large in the using process, so that the elastic leather cup of the piston is damaged in advance; thereby affecting the overall life of the compressor.
Disclosure of Invention
To exist not enough among the prior art, the embodiment of the utility model provides an increase piston structure in air compressor life-span, convenient assembling not only can prolong leather cup life moreover to air compressor whole life-span has been prolonged. In order to realize the technical purpose, the embodiment of the utility model adopts the technical scheme that:
the embodiment of the utility model provides a piston structure for prolonging the service life of an air compressor, which comprises an eccentric wheel, a connecting rod, a piston, a bearing, a leather cup, a pressure ring, a valve plate and a screw;
the connecting rod and the piston are of an integral structure; one end of the connecting rod is connected with the eccentric shaft on one side of the eccentric wheel through a bearing, and a shaft hole on the other side of the eccentric wheel is used for connecting with an output shaft of the motor;
the piston is arranged in the cylinder body; the outer ring of the top of the piston is provided with a circle of pressing groove, the bottom wall of the leather cup is pressed in the pressing groove of the outer ring of the piston by the pressing ring, and the side wall of the leather cup is used for elastically contacting with the inner wall of the cylinder body;
the piston is provided with an air inlet hole which penetrates through the piston; one end of the valve plate is fixed on the upper surface of the piston through a screw, and the other end of the valve plate is pressed on one end, located on the upper surface of the piston, of the air inlet hole in a natural state.
Furthermore, a gasket is arranged above one end of the valve plate, and the screw penetrates through the gasket and one end of the valve plate to be fixed to the piston.
Further, the thickness T1 of the side wall of the packing cup is larger than the thickness T2 of the bottom wall.
Furthermore, the lateral wall of the leather cup is outwards opened compared with the bottom wall, and an included angle between the lateral wall of the leather cup and the bottom wall is an obtuse angle.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is:
1) The assembly is convenient, the manufacturing process is simplified, and the cost is reduced.
2) The friction force and the tension force applied to the leather cup in the operation process can be reduced, and the service life of the compressor is prolonged.
Drawings
Fig. 1 is a schematic view of a piston structure in an embodiment of the present invention.
Fig. 2 is a schematic diagram of a cup structure in the prior art.
Fig. 3 is a schematic view of a leather cup structure in an embodiment of the present invention.
Fig. 4 is a partial enlarged view of the cup bend of fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, a piston structure for prolonging the service life of an air compressor provided by the embodiment of the present invention comprises an eccentric wheel 1, a connecting rod 2, a piston 3, a bearing 4, a leather cup 5, a pressure ring 6, a valve plate 7 and a screw 8;
the connecting rod 2 and the piston 3 are of an integral structure; one end of the connecting rod 2 is connected with an eccentric shaft 101 on one side of the eccentric wheel 1 through a bearing 4, and a shaft hole 102 on the other side of the eccentric wheel 1 is used for connecting with an output shaft of a motor;
the piston 3 is arranged in the cylinder body 10; the outer ring of the top of the piston 3 is provided with a circle of pressing groove, the bottom wall of the leather cup 5 is pressed in the pressing groove of the outer ring of the piston 3 by the pressing ring 6, and the side wall of the leather cup 5 is used for elastically contacting with the inner wall of the cylinder body 10;
an air inlet hole 301 penetrating through the piston 3 is formed in the piston 3; one end of the valve plate 7 is fixed on the upper surface of the piston 3 through a screw 8, and the other end of the valve plate 7 is pressed at one end of the air inlet hole 301, which is positioned on the upper surface of the piston 3, in a natural state;
when the motor drives the eccentric wheel 1 to rotate, the eccentric wheel 1 drives the connecting rod 2 and the piston 3 to reciprocate up and down; the leather cup 5 can move up and down in the cylinder body 10 and ensure the air tightness with the cylinder body 10; when the piston 3 moves downwards, the air pressure in the space in the cylinder 10 above the piston 3 is lower than the air pressure in the space in the cylinder 10 below the piston 3, air enters the space in the cylinder 10 above the piston 3 from below the piston 3, and the valve plate 7 is opened at the moment; when the piston 3 moves upwards, air in the space in the cylinder 10 above the piston 3 is compressed, the valve plate 7 is closed at the moment, and the compressed air can be output from the air compressor; in an air compressor, usually, the top end of a cylinder body 10 is also provided with a valve cover assembly provided with a one-way valve plate, and the one-way valve plate in the valve cover assembly is also arranged on the upper surface of the valve cover, and is similar to the valve plate 7 arranged on the piston 3;
in the piston structure, the connecting rod and the piston are integrally constructed, and the leather cup only needs to be fixed through the compression ring, so that the structural complexity is greatly reduced, the installation is convenient and fast, and the connection is reliable; the manufacturing process can be simplified, and the cost can be reduced;
preferably, a gasket 9 is arranged above one end of the valve plate 7, and the screw 8 penetrates through the gasket 9 and one end of the valve plate 7 to be fixed to the piston 3; the gasket 9 can protect the valve plate 7 from being damaged when the valve plate 7 is fixed, and the proper length of the gasket 9 can adjust the elasticity of the valve plate 7, so that the valve plate 7 is in the best working state when opened or closed;
as shown in FIG. 2, the bottom wall and the side wall of the leather cup in the prior art are the same in thickness and are both T, and the leather cup with the structure has a common service life;
as shown in fig. 3 and 4, as an optimization of the present embodiment, the cup 5 in the present application has a larger thickness T1 of the side wall than T2 of the bottom wall; the advantages brought by the method include:
a. the tension of the material at the bending part of the leather cup can be reduced in the initial stage, and the initial abrasion is reduced;
b. after long-term use, the leather cup material can be hardened and shaped, and because the bending part of the leather cup is thinner, the tension required for opening the leather cup can be reduced, and air leakage or squeaking at the initial stage of starting the machine can be avoided;
c. the friction force is reduced, the temperature rise of the cylinder body is slightly lower than that of the prior art, and the abrasion of the leather cup is reduced.
Specifically, the side wall of the cup 5 is opened outward compared with the bottom wall, and an included angle between the side wall and the bottom wall of the cup 5 is an obtuse angle.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to examples, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (4)
1. A piston structure for prolonging the service life of an air compressor is characterized by comprising an eccentric wheel (1), a connecting rod (2), a piston (3), a bearing (4), a leather cup (5), a pressure ring (6), a valve plate (7) and a screw (8);
the connecting rod (2) and the piston (3) are of an integral structure; one end of the connecting rod (2) is connected with an eccentric shaft (101) on one side of the eccentric wheel (1) through a bearing (4), and a shaft hole (102) on the other side of the eccentric wheel (1) is used for connecting with an output shaft of a motor;
the piston (3) is arranged in the cylinder body (10); a circle of pressing groove is formed in the outer ring of the top of the piston (3), the bottom wall of the leather cup (5) is pressed in the pressing groove of the outer ring of the piston (3) by the pressing ring (6), and the side wall of the leather cup (5) is used for being in elastic contact with the inner wall of the cylinder body (10);
an air inlet hole (301) penetrating through the piston (3) is formed in the piston (3); one end of the valve plate (7) is fixed on the upper surface of the piston (3) through a screw (8), and the other end of the valve plate (7) is pressed at the natural state at one end of the air inlet hole (301) located on the upper surface of the piston (3).
2. The piston structure for increasing the lifespan of an air compressor according to claim 1,
a gasket (9) is arranged above one end of the valve plate (7), and a screw (8) penetrates through the gasket (9) and one end of the valve plate (7) and is fixed to the piston (3).
3. Piston structure for increasing the lifetime of an air compressor according to claim 1 or 2,
the thickness T1 of the side wall of the leather cup (5) is larger than the thickness T2 of the bottom wall.
4. Piston structure for increasing the lifetime of an air compressor according to claim 1 or 2,
the side wall of the leather cup (5) is outwards opened compared with the bottom wall, and an included angle between the side wall and the bottom wall of the leather cup (5) is an obtuse angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221539746.6U CN217950622U (en) | 2022-06-20 | 2022-06-20 | Piston structure for prolonging service life of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221539746.6U CN217950622U (en) | 2022-06-20 | 2022-06-20 | Piston structure for prolonging service life of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217950622U true CN217950622U (en) | 2022-12-02 |
Family
ID=84218896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221539746.6U Active CN217950622U (en) | 2022-06-20 | 2022-06-20 | Piston structure for prolonging service life of air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217950622U (en) |
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2022
- 2022-06-20 CN CN202221539746.6U patent/CN217950622U/en active Active
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