CN202381282U - Grading compressor - Google Patents
Grading compressor Download PDFInfo
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- CN202381282U CN202381282U CN2011205148416U CN201120514841U CN202381282U CN 202381282 U CN202381282 U CN 202381282U CN 2011205148416 U CN2011205148416 U CN 2011205148416U CN 201120514841 U CN201120514841 U CN 201120514841U CN 202381282 U CN202381282 U CN 202381282U
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Abstract
The utility model discloses a grading compressor, wherein a cylinder block comprises a third grade compression part, a first grade compression part and a second grade compression part; the cylinder diameter of the first grade compression part is greater than that of the second grade compression part; the cylinder diameter of the second grade compression part is greater than that of the third grade compression part; piston bodies comprise a third grade piston body, a first grade piston body and a second grade piston body; an end enclosure is fixed on one end of the first grade piston body departing from the second grade piston body; the third piston body is arranged inside of the end enclosure; a third grade piston ring set is arranged on the third grade piston body; a first grade piston ring set is arranged on the first grade piston body; a second grade piston ring set is arranged on the second grade piston body; the middle part of the first grade piston body close to one side of the second grade piston body and the second grade piston body itself are in hollow structure and form an installation cavity for connecting rods; a piston pin bracket fixedly connected with the first grade piston body is arranged in the installation cavity for connecting rods; and the piston pin is arranged on the piston pin bracket. The grading compressor has a high ratio of compression, and is more compact in structure and more space-saving.
Description
Technical field
The utility model relates to a kind of compressor.
Background technique
The crankcase top of compressor is provided with cylinder, and the piston in the cylinder connects with bent axle through connecting rod.Drive piston motion in the bent axle movement process, thus pressurized gas.Usually, in order to obtain higher compression ratio, need to increase extra cylinder and come pressurized gas.Therefore the compressor arrangement that compression ratio is bigger is complicated, and volume is bigger.
Therefore those skilled in the art are devoted to develop a kind of compression ratio height, the compressor that volume is little.
The model utility content
Because the above-mentioned defective of existing technology, it is high that the utility model technical problem to be solved provides a kind of compression ratio, the compressor that volume is little.
For realizing above-mentioned purpose, the utility model provides a kind of differential piston compressor, comprises crankcase; Be provided with bent axle in the said crankcase; The top of said crankcase is provided with cylinder, and said cylinder comprises cylinder body; Be provided with piston body in the said cylinder body, it is characterized in that: said cylinder body comprises third level press part, first order press part and second level press part from top to bottom successively; The cylinder diameter of said first order press part is greater than the cylinder diameter of said second level press part; The cylinder diameter of said second level press part is greater than the cylinder diameter of said third level press part; Said piston body comprises three grades of piston bodies, first stage piston body and the second piston body of coaxial setting successively; The diameter of said first stage piston body is greater than the diameter of said second piston body; The diameter of said second piston body is greater than the diameter of said three grades of piston bodies; Said first stage piston body places said first order press part; Said second piston body places said second level press part; Said three grades of piston bodies place said third level press part; Said first stage piston body and said second piston body are structure as a whole; The end that said first stage piston body deviates from said second piston body is fixed with end socket; Said three grades of piston bodies are arranged in the said end socket; Said three grades of piston bodies are provided with three grades of piston ring groups; Said first stage piston body is provided with first stage piston ring group; Said second piston body is provided with second piston ring group; Said first stage piston body middle part is near said second piston body one side, and said second piston body is hollow-core construction, formation connecting rod installation cavity; Be provided with the wrist pin support that is fixedly connected with said first stage piston body in the said connecting rod installation cavity; Said wrist pin support is provided with wrist pin.
Adopt said structure, piston cooperation cylinder can form the bottom and be similar to structures differential, the single three grades of compressions in top, realizes higher compression ratio to accomplish; And the piston Lower Half is made hollow-core construction, and the inner connecting rod small end that connects can have been saved very large space at the piston axial direction, has shortened the length of cylinder itself.
For wrist pin is accurately located, and be convenient to lubricate, said wrist pin is a hollow pin, and its two ends are respectively arranged with plug.
For making three grades of piston bodies is floating type, and to prevent the location, said end socket is provided with shoulder hole; Said three grades of piston bodies are arranged in the said shoulder hole near said first stage piston body one end; Said three grades of piston bodies are provided with the step surface relative with the ladder surface of said shoulder hole; Said three grades of piston bodies have the gap in said shoulder hole and between the said end socket.
For making structure of piston compacter, further to reduce the compressor volume, said end socket embeds in the said first stage piston body; Said end socket, first stage piston body and wrist pin support are fixedly connected through double-screw bolt, packing ring and nut.
For alleviating piston weight, said three grades of piston bodies are provided with blind hole vertically; In the said blind hole, be provided with plug near said first stage piston body one side.
For preventing that three grades of piston bodies from crossing the location, has the spacing of 0.03～0.055mm between said plug and the said first stage piston body.
When improving piston motion and the positional accuracy between the cylinder body, the both sides of said first stage piston ring group are provided with support ring.
Preferable, said second piston body is provided with scraper ring away from said first stage piston body one side.
For making compressor arrangement compacter, said cylinder comprises first cylinder and second cylinder; The setting of staggering on the top of said crankcase of said first cylinder and second cylinder; Said piston body comprises first piston body that places in said first cylinder and second piston body that places in said second cylinder.
For making compressor arrangement compacter, the center line angle of said first cylinder and second cylinder is 75 °.
For improving speed of crankshaft, the crank throw of said bent axle is provided with balance iron.
The beneficial effect of the utility model is: the utlity model has higher compression ratio, and more compact structure, more save space.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the A-A sectional view of Fig. 1.
Structure of piston schematic representation in Fig. 3 the utility model one embodiment.
Fig. 4 is that the A of Fig. 3 is to view.
Fig. 5 is the partial enlarged drawing at I place among Fig. 3.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
As depicted in figs. 1 and 2, a kind of differential piston compressor comprises crankcase 100, is provided with bent axle 25 in the crankcase 100, and the crank throw of bent axle 25 is provided with balance iron 26.
The top of crankcase 100 is provided with cylinder, and cylinder comprises cylinder body, is provided with piston body in the cylinder body.
In the present embodiment, cylinder comprises first cylinder 200 and second cylinder 300; The setting of staggering on the top of crankcase 100 of first cylinder 200 and second cylinder 300; The center line angle of first cylinder 200 and second cylinder 300 is 75 °.Piston body comprises first piston body 400 that places in first cylinder 200 and second piston body 500 that places in second cylinder 300.
The cylinder body of each cylinder comprises third level press part 22, first order press part 23 and second level press part 24 from top to bottom successively; The cylinder diameter of first order press part 23 is greater than the cylinder diameter of second level press part 24; The cylinder diameter of second level press part 24 is greater than the cylinder diameter of third level press part 22;
Each piston body comprises three grades of piston bodies 2, first stage piston body 6 and the second piston body 16 of coaxial setting successively.The diameter of first stage piston body 6 is greater than the diameter of second piston body 16, and the diameter of second piston body 16 is greater than the diameter of three grades of piston bodies 2.
First stage piston body 6 is structure as a whole with second piston body 16, and the end embedding that first stage piston body 6 deviates from second piston body 16 is fixed with end socket 3, and end socket 3 is provided with shoulder hole 19.Three grades of piston bodies 2 are arranged in the shoulder hole 19 near first stage piston body 6 one ends, and have the step surface 21 relative with the ladder surface of shoulder hole 19 20.Three grades of piston bodies 2 have the gap in shoulder hole 19 and between the end socket 3.
Three grades of piston bodies 2 are provided with three grades of piston ring groups 1, and first stage piston body 6 is provided with first stage piston ring group 5, and second piston body 16 is provided with second piston ring group 13.The both sides of first stage piston ring group 5 are provided with support ring 7, and second piston body 16 is provided with scraper ring 14 away from first stage piston body 6 one sides.
First stage piston body 6 middle parts are near second piston body 16 1 sides; And second piston body 16 is hollow-core construction; Form connecting rod installation cavity 17; Be provided with the wrist pin support 8 that is fixedly connected with first stage piston body 16 in the connecting rod installation cavity 17, wrist pin support 8 is provided with hollow wrist pin 9, and the two ends of wrist pin 9 are respectively arranged with plug 12.
End socket 3, first stage piston body 6 and wrist pin support 8 are fixedly connected through double-screw bolt 15, packing ring 10 and nut 11.
Three grades of piston bodies 2 are provided with blind hole 18 vertically, in the blind hole 18, be provided with plug 4 near first stage piston body 6 one sides.
In the present embodiment, has the spacing L of 0.04mm between plug 4 and the first stage piston body 6.In other embodiment, the spacing between plug 4 and the first stage piston body 6 also can be the value between 0.03mm～0.055mm, as 0.03,0.035,0.045,0.05,0.055mm etc.
The piston cooperation cylinder of present embodiment can form the bottom and be similar to structures differential, the single three grades of compressions in top, realizes higher compression ratio to accomplish; And the piston Lower Half is made hollow-core construction, and the inner connecting rod small end that connects can have been saved very large space at the piston axial direction, has shortened the length of cylinder itself.Owing to be provided with balance iron 26, thus first piston body 400 and second piston body, 500 inertial force can reach balance with joint efforts, thereby the rotating speed that bent axle 25 can be higher is rotated; Because first cylinder and second cylinder stagger each other 75 ° and be provided with, and help the installation and the layout of air valve, thereby the circulation area of air valve is increased, interstage cooler and inter-stage pipeline also can directly be contained on the machine, thereby make compressor arrangement compact; And adopt 2V type structure can the connecting rod of some row be attached on the same crank throw, the turning number and can reduce of crank throw, the axial length of machine can shorten, so the main shaft neck grease adopts rolling bearing.
More than describe the preferred embodiment of the utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technician in the art according to the design of the utility model on the basis of existing technology through the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be in determined protection domain by claims.
Claims (10)
1. a differential piston compressor comprises crankcase (100); Be provided with bent axle (25) in the said crankcase (100); The top of said crankcase (100) is provided with cylinder, and said cylinder comprises cylinder body; Be provided with piston body in the said cylinder body, it is characterized in that: said cylinder body comprises third level press part (22), first order press part (23) and second level press part (24) from top to bottom successively; The cylinder diameter of said first order press part (23) is greater than the cylinder diameter of said second level press part (24); The cylinder diameter of said second level press part (24) is greater than the cylinder diameter of said third level press part (22);
Said piston body comprises three grades of piston bodies (2), first stage piston body (6) and the second piston body (16) of coaxial setting successively; The diameter of said first stage piston body (6) is greater than the diameter of said second piston body (16); The diameter of said second piston body (16) is greater than the diameter of said three grades of piston bodies (2);
Said first stage piston body (6) places said first order press part (23); Said second piston body (16) places said second level press part (24); Said three grades of piston bodies (2) place said third level press part (22);
Said first stage piston body (6) and said second piston body (16) are structure as a whole; The end that said first stage piston body (6) deviates from said second piston body (16) is fixed with end socket (3); Said three grades of piston bodies (2) are arranged in the said end socket (3);
Said three grades of piston bodies (2) are provided with three grades of piston ring groups (1); Said first stage piston body (6) is provided with first stage piston ring group (5); Said second piston body (16) is provided with second piston ring group (13);
Said first stage piston body (6) middle part is near said second piston body (16) one sides, and said second piston body (16) is hollow-core construction, formation connecting rod installation cavity (17); Be provided with the wrist pin support (8) that is fixedly connected with said first stage piston body (16) in the said connecting rod installation cavity (17); Said wrist pin support (8) is provided with wrist pin (9).
2. differential piston compressor as claimed in claim 1 is characterized in that: said wrist pin (9) is a hollow pin, and its two ends are respectively arranged with plug (12).
3. differential piston compressor as claimed in claim 1 is characterized in that: said end socket (3) is provided with shoulder hole (19); Said three grades of piston bodies (2) are arranged in the said shoulder hole (19) near said first stage piston body (6) one ends; Said three grades of piston bodies (2) are provided with the step surface (21) relative with the ladder surface (20) of said shoulder hole (19); Said three grades of piston bodies (2) have the gap in said shoulder hole (19) and between the said end socket (3).
4. like claim 1 or 2 or 3 described differential piston compressors, it is characterized in that: said end socket (3) embeds in the said first stage piston body (6); Said end socket (3), first stage piston body (6) and wrist pin support (8) are fixedly connected through double-screw bolt (15), packing ring (10) and nut (11).
5. differential piston compressor as claimed in claim 4 is characterized in that: said three grades of piston bodies (2) are provided with blind hole (18) vertically; In the said blind hole (18), be provided with plug (4) near said first stage piston body (6) one sides.
6. differential piston compressor as claimed in claim 5 is characterized in that: the spacing (L) that has 0.03～0.055mm between said plug (4) and the said first stage piston body (6).
7. like claim 1 or 2 or 3 described differential piston compressors, it is characterized in that: the both sides of said first stage piston ring group (5) are provided with support ring (7); Said second piston body (16) is provided with scraper ring (14) away from said first stage piston body (6) one sides.
8. like claim 1 or 2 or 3 described differential piston compressors, it is characterized in that: said cylinder comprises first cylinder (200) and second cylinder (300); The setting of staggering on the top of said crankcase (100) of said first cylinder (200) and second cylinder (300); Said piston body comprises first piston body (400) second piston body (500) interior with placing said second cylinder (300) that places in said first cylinder (200).
9. differential piston compressor as claimed in claim 8 is characterized in that: the center line angle of said first cylinder (200) and second cylinder (300) is 75 °.
10. like claim 1 or 2 or 3 described differential piston compressors, it is characterized in that: the crank throw of said bent axle (25) is provided with balance iron (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205148416U CN202381282U (en) | 2011-12-12 | 2011-12-12 | Grading compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205148416U CN202381282U (en) | 2011-12-12 | 2011-12-12 | Grading compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381282U true CN202381282U (en) | 2012-08-15 |
Family
ID=46629791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205148416U Expired - Fee Related CN202381282U (en) | 2011-12-12 | 2011-12-12 | Grading compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381282U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216423A (en) * | 2013-03-27 | 2013-07-24 | 蚌埠市正大压缩机有限公司 | Level difference type integral piston of compressor |
| CN108150385A (en) * | 2016-12-05 | 2018-06-12 | 张家港科康智能科技有限公司 | A kind of crank rod movement component of diaphragm type gas compressor |
-
2011
- 2011-12-12 CN CN2011205148416U patent/CN202381282U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216423A (en) * | 2013-03-27 | 2013-07-24 | 蚌埠市正大压缩机有限公司 | Level difference type integral piston of compressor |
| CN108150385A (en) * | 2016-12-05 | 2018-06-12 | 张家港科康智能科技有限公司 | A kind of crank rod movement component of diaphragm type gas compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |