CN115355289A - Small-sized guide mechanism and reciprocating piston compressor - Google Patents
Small-sized guide mechanism and reciprocating piston compressor Download PDFInfo
- Publication number
- CN115355289A CN115355289A CN202210955428.6A CN202210955428A CN115355289A CN 115355289 A CN115355289 A CN 115355289A CN 202210955428 A CN202210955428 A CN 202210955428A CN 115355289 A CN115355289 A CN 115355289A
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- CN
- China
- Prior art keywords
- guide mechanism
- guide
- connecting rod
- cylinder
- crankshaft connecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/04—Guiding mechanisms, e.g. for straight-line guidance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
- F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
- F16H21/18—Crank gearings; Eccentric gearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/20—Rings with special cross-section; Oil-scraping rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressor (AREA)
Abstract
The invention discloses a small-sized guide mechanism, which comprises: the device comprises a piston rod, a compression cylinder, a stuffing box, a guide cylinder, a crankshaft connecting rod and a crankcase; the variable-angle power transmission mechanism is characterized in that the guide mechanism is connected with the piston rod and the crankshaft connecting rod and reciprocates in the guide cylinder to transmit variable-angle power between the piston rod and the crankshaft connecting rod; the guide mechanism is characterized in that the upper area and the lower area of the guide cylinder are divided into two non-communicated airtight spaces by an oil scraper ring on the side wall of the guide mechanism. Through changing the structure in original reciprocating piston compressor, the first aspect uses the guide mechanism that the volume is littleer to replace original cross head structure, and original piston rod scraper ring is cancelled and with the frizing function integration to the guide mechanism to the second aspect on, and original pressure lubrication system is deleted to the third aspect, implements the work lubrication to the part in the space that has reduced through the mode of splash lubrication, has realized the miniaturized design of unit.
Description
Technical Field
The invention relates to the field of reciprocating piston compressors, in particular to a small guide mechanism and a reciprocating piston compressor.
Background
Most of the existing vertical, V-type and W-type piston air compressors are composed of a piston rod, a crank and a crankshaft connecting rod to form a transmission system, the piston rod and the crankshaft connecting rod are connected through a crosshead, and pressure lubrication is adopted to assist a piston rod oil scraper ring and a packing mechanism to seal and work.
Refer to chinese utility model patent publication No. CN216812059U discloses "an oil-free sealed type oxygen compressor and device", this patent has cancelled the piston rod scraper ring and has adopted the full grease mode to lubricate, has also reduced the durability when reducing part quantity and product size.
The crosshead, the piston rod oil scraper ring and the filling mechanism under the structure occupy a large amount of space inside the compressor. The work of the volume miniaturization of the unit based on the existing structure is difficult to develop.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the technical scheme that:
a compact guide mechanism comprising: the device comprises a piston rod, a compression cylinder, a stuffing box, a guide cylinder, a crankshaft connecting rod and a crankcase;
the guide mechanism is connected with the piston rod and the crankshaft connecting rod and reciprocates in the guide cylinder to perform variable-angle power transmission between the piston rod and the crankshaft connecting rod;
the guide mechanism is characterized in that the upper area and the lower area of the guide cylinder are divided into two non-communicated airtight spaces by an oil scraper ring on the side wall of the guide mechanism.
In a preferred embodiment of the invention, the upper part of the guide mechanism is connected with the piston rod, and the lower part of the guide mechanism is hinged with the crankshaft connecting rod to realize variable-angle power transmission.
In a preferred embodiment of the invention, the guide means is a guide piston.
In a preferred embodiment of the present invention,
the crankcase is connected with the lower end of the guide cylinder, and a crankshaft is arranged in the crankcase;
and lubricating oil is arranged at the bottom of the crankcase, and the lubricating oil performs splash lubrication on the crankcase and the guide mechanism in the working process of the crankshaft connecting rod.
In a preferred embodiment of the present invention, the crankshaft is connected to the crankshaft connecting rod, and the crankshaft rotates by external power to drive the crankshaft connecting rod to push the guide mechanism to reciprocate in the guide cylinder.
In a preferred embodiment of the present invention, a cylinder cover is disposed on the top of the compression cylinder, and the cylinder cover is respectively provided with an air inlet hole and an air outlet hole.
Reciprocating piston compressor, including above-mentioned small-size guiding mechanism.
The invention has the beneficial effects that:
the small guide mechanism and the reciprocating piston compressor provided by the invention change the structure in the original compressor,
the first aspect replaces the original crosshead structure by using a guide mechanism with smaller volume,
the second aspect further reduces the volume of the compressor by eliminating the original piston rod oil scraper ring and integrating the hanging function on the guide mechanism, thereby realizing the miniaturization design of the unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and the above description is simplified for convenience of description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
As used in this specification, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. The term "comprising" as used in this specification is intended to specify the presence of stated features but does not preclude the presence or addition of one or more other features. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.
In the description, when an element is referred to as being "on," "fixed to," "connected to," coupled to, "etc. another element, it can be directly on, fixed to, connected to, coupled to, or contacting the other element, or intervening elements may be present. In the description, one feature may be "adjacent" to another feature, and may mean that one feature has a portion overlapping with or is located above or below the adjacent feature.
Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood, however, that the present application may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. It is also to be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, like reference numbers indicate identical or functionally identical elements.
The piston compressor with guide mechanism with reference to fig. 1 mainly comprises: crankcase 10, guide cylinder 20, compression cylinder 30, stuffing box 40 and guide mechanism (not directly shown in the figure).
The piston 31 is arranged in the compression cylinder 30, the bottom of the piston 31 is connected with the piston rod 32, and the piston 31 can move vertically in the compression cylinder 30 after being stressed. The top of the compression cylinder 30 is fixed with a cylinder cover 50, and the cylinder cover 50 is respectively provided with an air inlet 51 and an air outlet 52.
A guide mechanism 21 (not directly shown in the figure) is arranged in the guide cylinder 20, the top of the guide mechanism 21 is fixedly connected with the lower end of the piston rod 32, and the bottom thereof is hinged with the upper end of the crankshaft connecting rod 23. The guide mechanism 21 has an outer peripheral surface engaged with the cylinder wall of the guide cylinder 20, and an oil scraper ring 24 is further provided on the outer peripheral surface, the oil scraper ring 24 being tightly engaged with the cylinder wall of the guide cylinder 20. The guide mechanism 21 forms a closed chamber 22 in the upper region of the guide cylinder 20. The guide mechanism 21 forms a piston-like or guide piston-like structure in the guide cylinder 20, and replaces the widely adopted combined structure of a crosshead and a piston rod oil scraper ring in the prior art, thereby achieving the purposes of reducing the number of parts and reducing the volume of the compressor.
A stuffing box 40 is connected between the compression cylinder 30 and the guide cylinder 20, and the stuffing box 40 has a certain balance function against the air pressure fluctuation generated in the working process of the guide mechanism 21 in the sealed chamber 22 while ensuring the air tightness between the compression cylinder 30 and the guide cylinder 20. The lower end of the crankshaft connecting rod 23 extends into the crankcase 10 to be connected to the crankshaft 11. The bottom of the crankcase 10 is arranged with lubricating oil 12.
During operation of the compressor, the crankshaft connecting rod 23 extends into the lubricating oil 12 during the rotational movement, and splashes the lubricating oil 12 out of the crankcase 10, the guide cylinder 20 and the guide mechanism to perform splash lubrication. The guide mechanism 21 realizes variable angle power transmission between the crankshaft connecting rod 23 and the piston rod 32, and converts the force applied to the end of the crankshaft connecting rod 23 to move and rotate and the force applied to the end of the piston rod 32 to move vertically. The guide mechanism 21 guides the piston rod 32 to move along the axial direction of the guide cylinder 20 during the movement, and keeps the connecting point of the crankshaft connecting rod 23 and the piston rod 32 to stably move along a preset track. The oil scraper ring 24 provided on the pilot mechanism 21 removes oil from the wall of the pilot cylinder 20 during its movement, preventing the oil from entering the compression cylinder 30 along the rod.
Claims (7)
1. A compact guide mechanism comprising: the device comprises a piston rod, a compression cylinder, a stuffing box, a guide cylinder, a crankshaft connecting rod and a crankcase;
it is characterized in that the preparation method is characterized in that,
the guide mechanism is connected with the piston rod and the crankshaft connecting rod and reciprocates in the guide cylinder to carry out variable-angle power transmission between the piston rod and the crankshaft connecting rod;
the guide mechanism is characterized in that an upper area and a lower area of the guide cylinder are divided into two airtight spaces which are not communicated through oil scraping rings on the side walls of the guide mechanism.
2. The compact guide mechanism of claim 1 wherein the upper portion of the guide mechanism is connected to the piston rod and the lower portion is hinged to the crankshaft connecting rod for variable angle power transmission.
3. A compact guide mechanism as claimed in claim 1 wherein the guide mechanism is a guide piston.
4. A compact guide mechanism according to claims 1 to 3,
the crankcase is connected with the lower end of the guide cylinder, and a crankshaft is arranged in the crankcase;
and lubricating oil is arranged at the bottom of the crankcase, and the lubricating oil performs splash lubrication on the crankcase and the guide mechanism in the working process of the crankshaft connecting rod.
5. The compact guide mechanism of claim 4,
the crankshaft is connected with the crankshaft connecting rod, and the crankshaft drives the crankshaft connecting rod to push the guide mechanism to reciprocate in the guide cylinder through external power autorotation.
6. The compact guide mechanism of claim 4,
the cylinder cover is arranged at the top of the compression cylinder, and an air inlet hole and an air outlet hole are respectively formed in the cylinder cover.
7. Reciprocating piston compressor, characterized in that it comprises a miniaturised guiding mechanism according to claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210955428.6A CN115355289A (en) | 2022-08-10 | 2022-08-10 | Small-sized guide mechanism and reciprocating piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210955428.6A CN115355289A (en) | 2022-08-10 | 2022-08-10 | Small-sized guide mechanism and reciprocating piston compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115355289A true CN115355289A (en) | 2022-11-18 |
Family
ID=84001496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210955428.6A Pending CN115355289A (en) | 2022-08-10 | 2022-08-10 | Small-sized guide mechanism and reciprocating piston compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115355289A (en) |
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2022
- 2022-08-10 CN CN202210955428.6A patent/CN115355289A/en active Pending
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