CN111734606A - Oil accumulator and air compressor applied to oil accumulator - Google Patents
Oil accumulator and air compressor applied to oil accumulator Download PDFInfo
- Publication number
- CN111734606A CN111734606A CN202010715714.6A CN202010715714A CN111734606A CN 111734606 A CN111734606 A CN 111734606A CN 202010715714 A CN202010715714 A CN 202010715714A CN 111734606 A CN111734606 A CN 111734606A
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- oil
- valve seat
- air
- cavity
- joint
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- 239000011148 porous material Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 description 82
- 238000000926 separation method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Classifications
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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
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
An oil accumulator is characterized by comprising a first valve seat, a first piston, a second valve seat and a cylinder body, wherein the first valve seat is provided with a first joint for air inlet, a first air flow channel and a second air flow channel which are connected with the first joint; the second valve seat and the first valve seat are arranged at intervals and provided with a second joint for oil outlet and a third joint for oil inlet, and a cavity, a third airflow channel, an oil inlet channel and an oil outlet channel are arranged in the second valve seat; the cylinder body is arranged between the first valve seat and the second valve seat in a sealing mode, one end of an inner cavity of the cylinder body is communicated with the air outlet end of the first air flow passage, and the other end of the inner cavity of the cylinder body is communicated with the oil outlet passage and the oil inlet pore passage. It also relates to an air compressor with the oil accumulator. When the air compressor is stopped, the oil in the oil-gas separator can be temporarily stored in the oil accumulator, so that the possibility of oil drops carried by compressed air is reduced.
Description
Technical Field
The invention relates to an oil accumulator for an air compressor, which can temporarily store part of oil in an oil-gas separator. The invention also relates to an air compressor.
Background
The oil-gas separation filter element is a key component for determining the quality of compressed air of the air compressor, and the high-quality oil-gas separation element can ensure the high-efficiency work of the compressor. The compressed air from the compressor head carries a large amount of oil droplets (suspended oil particles with the diameter below 1 um), which must be filtered through a micron and glass fiber filter material layer of the oil-gas separation filter element. The oil particles are directly intercepted by the filter material under the diffusion action of the filter material and are condensed by inertia collision and other mechanisms, so that the suspended oil particles in the compressed air are quickly condensed into large oil drops, the oil is gathered at the bottom of an oil core under the action of gravity and returns to a head lubricating oil system through an inlet of an oil return pipe at the concave part of the bottom, and therefore the compressor discharges more pure oil-free compressed air.
In the prior art, as shown in fig. 1 and 2, the oil-gas separator basically comprises a shell 1a, a filter element 2a, an end cover 4a, a base 5a and a central separation pipe 3a, wherein one end of the shell 1a is provided with an opening; the filter element 2a is arranged in the shell 1a and is provided with an axial hollow air outlet cavity 2b, and an air inlet cavity 1b is formed between the filter element 2a and the inner wall of the shell 1 a; the end cover 4a is arranged on the opening of the shell 1a and fixes the filter element 2a, and the end cover 4a is provided with an air inlet 41a communicated with the air inlet cavity 1 b; the base 5a is arranged on the end cover 4 a; the first section of the central separation pipe 3a penetrates through the base 5a and extends into the air outlet cavity 2b of the filter element 2a, the second end of the central separation pipe is exposed out of the base 5a to form an air outlet 4b, and the central separation pipe 3a is provided with an oil return cavity 3b and an oil return hole 34a communicated with the oil return cavity 3 b. The air outlet end of the main machine of the air compressor is connected with the air inlet 41a, and the oil return hole 34a is connected with the oil return end of the main machine through an oil return pipe.
The oil-gas separator with the structure can often entrain oil in compressed air discharged in a short time after the machine is stopped, and the applicant analyzes and researches the situation that the main machine is stopped suddenly, so that an impulsive force can be generated in the oil-gas separator in the oil return pipe to enable the oil to flow back into an oil return cavity of the oil-gas separator, the oil in the oil return cavity can splash to a certain height and fall into an inner pipe of the central separation pipe after the impulsive force reaches a certain degree, and the compressed air discharged from the inner pipe can entrain oil drops.
For this reason, the applicant improves the oil-gas separator, and the application number is 201910094788.X, which is a chinese patent application publication of "oil-gas separator and air compressor applying the oil-gas separator" (application publication number is CN 109653991A). Although this application has a certain effect, it cannot be completely eradicated.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an oil accumulator for temporarily storing oil in an oil-gas separator to reduce the possibility of oil droplets entrained in compressed air.
A second technical problem to be solved by the present invention is to provide an air compressor capable of reducing the possibility of oil droplets entrained in compressed air, in view of the above technical situation.
The technical scheme adopted by the invention for solving the first technical problem is as follows: an oil reservoir is characterized by comprising
The first valve seat is provided with a first joint for air inlet, a first air flow channel and a second air flow channel which are connected with the first joint;
the second valve seat is arranged at an interval with the first valve seat and is provided with a second joint for oil outlet and a third joint for oil inlet, a cavity, a third air flow channel, an oil inlet channel and an oil outlet channel are arranged in the second valve seat, the cavity also comprises an air cavity and an oil cavity, the air cavity is communicated with the third air flow channel, the oil inlet channel is connected between the third joint and the oil cavity, the oil outlet channel is connected with the second joint, and an oil inlet pore channel which can be communicated with the oil cavity is formed in the second valve seat;
the air pipe is connected between the air outlet end of the second air flow channel and the air inlet end of the third air flow channel;
the cylinder body is hermetically arranged between the first valve seat and the second valve seat, one end of an inner cavity of the cylinder body is communicated with the air outlet end of the first air flow passage, and the other end of the inner cavity of the cylinder body is communicated with the oil outlet passage and the oil inlet pore passage;
the first piston is arranged in the cylinder body;
the first spring is arranged in the cylinder body and used for resetting the first piston;
the second piston is arranged in the cavity of the second valve seat; and
and the second spring is arranged in the cavity of the second valve seat and is used for resetting the second piston.
Preferably, one end of the cavity of the second valve seat is provided with a first plug capable of adjusting the depth, one end of the second spring abuts against the second piston, and the other end of the second spring abuts against the first plug.
Furthermore, the other end of the cavity of the second valve seat is provided with a second plug capable of adjusting the depth.
The inner wall of the first valve seat is provided with a first groove, one side of the first piston, which is close to the first valve seat, is convexly provided with a convex part which can extend into the first groove, in addition, the first piston is axially provided with a second groove, the second groove extends to the inner cavity of the convex part, a mandrel is arranged in the second groove, and the first spring is positioned in the second groove and sleeved outside the mandrel. The first groove and the convex part are matched to realize positioning, and the design that the second groove extends to the inner cavity of the convex part can make enough length space for the first spring. The core rod has two functions, one for positioning the first spring and the other for filling the second groove to make the oil discharge as possible.
The connecting structure of the first valve seat and the second valve seat is preferably set as follows: the first valve seat and the second valve seat are connected into a whole through a plurality of connecting rods, and the connecting rods are arranged around the cylinder body.
The first valve seat is provided with at least three air outlet ports which can be encircled into a circle and are communicated with the second air flow channel, the second valve seat is provided with at least three air inlet ports which can be encircled into a circle and are communicated with the third air flow channel, correspondingly, the air pipes are at least three hollow connecting rods, each air pipe is connected between the respective air outlet port and the air inlet port to connect the first valve seat and the second valve seat into a whole, and the air pipes are arranged around the cylinder body. The hollow air pipe is used as the connecting rod, the function of connecting the first valve seat and the second valve seat is achieved, the connecting rod part is omitted, and the structure is compact.
Furthermore, a one-way valve is arranged on the second joint.
The technical scheme adopted by the invention for solving the second technical problem is as follows: an air compressor comprises a main machine, an oil accumulator and an oil-gas separator, wherein an air outlet end of the main machine is connected with a first connector, an air inlet end of the main machine is connected with a second connector, and an oil outlet end of the oil-gas separator is connected with a third connector.
Compared with the prior art, the invention has the advantages that: when the engine is started, the first connector obtains air pressure, compressed air enters the first valve seat, a strand of air pressure enters the cylinder body through the first air flow channel and pushes the first piston, the first piston compresses the inner cavity of the cylinder body, and oil in the cylinder body is pressed out of the second connector through the oil outlet channel; meanwhile, the other air pressure enters the second valve seat through the air pipe, enters the cavity through the third air flow channel and pushes the second piston, and the second piston closes the oil inlet channel; when the engine is stopped, the first joint loses air pressure, the first spring jacks the first piston, the second spring jacks the second piston, and the third joint feeds oil into the oil cavity of the cavity through the oil feeding channel and enters the cylinder body through the oil feeding pore channel, so that the oil in the oil-gas separator is temporarily stored in the oil accumulator, and the possibility that oil drops are carried by compressed air is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an oil-gas separator in the prior art.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a schematic structural diagram of embodiment 1.
Fig. 4 is a reduced exploded view of fig. 3.
Fig. 5 is a schematic view of another structure in accordance with embodiment 1.
Fig. 6 is a schematic structural view of a first valve seat in embodiment 1.
Fig. 7 is a schematic structural view of the first piston in embodiment 1.
Fig. 8 is a schematic structural view of the second valve seat in embodiment 1.
Fig. 9 is a perspective sectional view of the second valve seat in embodiment 1.
Fig. 10 is a perspective sectional view of the second valve seat from another perspective in embodiment 1.
FIG. 11 is a schematic structural view of example 2.
Fig. 12 is a schematic structural diagram of an application embodiment.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
In embodiment 1, as shown in fig. 3, 4, and 5, the oil reservoir in this embodiment includes a first valve seat 1, a second valve seat 2, an air pipe 8, a cylinder 3, a first piston 4, a first spring 41, a core rod 42, a second piston 5, and a second spring 51.
As shown in fig. 6, the first valve seat 1 has a first joint 11 for intake air, and a first air flow passage 12 and a second air flow passage 13 connected to the first joint 11.
The second valve seat 2 is arranged at a distance from the first valve seat 1, the first valve seat 1 and the second valve seat 2 are connected into a whole by four connecting rods 7, and the four connecting rods 7 are arranged around the cylinder 3.
The second valve seat 2 has a second joint 21 for oil outlet and a third joint 23 for oil inlet, and the second joint 21 is provided with a one-way valve (not shown).
As shown in fig. 8, 9 and 10, a cavity 22, a third airflow channel 26, an oil inlet channel 27 and an oil outlet channel 25 are arranged in the second valve seat 2, the cavity 22 further includes an air cavity and an oil cavity, the air cavity is communicated with the third airflow channel 26, the oil inlet channel 27 is connected between the third joint 23 and the oil cavity, the oil outlet channel 25 is connected with the second joint 21, and the second valve seat 2 is provided with an oil inlet channel 24 which can be communicated with the oil cavity.
The air tube 8 is connected between the air outlet end of the second air flow channel 13 and the air inlet end of the third air flow channel 26.
The cylinder body 3 is hermetically arranged between the first valve seat 1 and the second valve seat 2, one end of the inner cavity of the cylinder body 3 is communicated with the air outlet end of the first air flow passage 12, and the other end of the inner cavity of the cylinder body 3 is communicated with the oil outlet passage 25 and the oil inlet pore passage 24;
as shown in fig. 7, the first piston 4 is disposed in the cylinder 3, and a seal ring is disposed on the outer periphery of the first piston 4; a first spring 41 provided in the cylinder 3 and used for returning the first piston 4; specifically, as shown in fig. 6, the inner wall of the first valve seat 1 has a first groove 14, a protruding portion 44 capable of extending into the first groove 14 is protruded from a side of the first piston 4 close to the first valve seat 1, a second groove 43 is axially formed on the first piston 4, the second groove 43 extends to an inner cavity of the protruding portion 44, the core rod 42 is disposed in the second groove 43, and the first spring 41 is positioned in the second groove 43 and sleeved outside the core rod 42. The first recess and the projection cooperate to achieve positioning, and the second recess extends into the cavity of the projection to leave sufficient space for the first spring. The core rod 42 has two functions, one for positioning the first spring 41 and the other for filling the second groove 43 to make the oil drain as possible.
As shown in fig. 4, the second piston 5 is arranged in the cavity 22 of the second valve seat 2, and a sealing ring is arranged on the periphery of the second piston 5; and a second spring 51 disposed in the cavity 22 of the second valve seat 2 and for restoring the second piston 5. One end of the cavity 22 of the second valve seat 2 is provided with a first plug 61 capable of adjusting the depth, one end of the second spring 51 is abutted against the second piston 5, and the other end is abutted against the first plug 61. The other end of the cavity 22 of the second valve seat 2 is provided with a second plug 62 capable of adjusting the depth.
When the engine is started, the first connector obtains air pressure, compressed air enters the first valve seat, a strand of air pressure enters the cylinder body through the first air flow channel and pushes the first piston, the first piston compresses the inner cavity of the cylinder body, and oil in the cylinder body is pressed out of the second connector through the oil outlet channel; meanwhile, the other air pressure enters the second valve seat through the air pipe, enters the cavity through the third air flow channel and pushes the second piston, and the second piston closes the oil inlet channel;
when the engine is stopped, the first joint loses air pressure, the first spring jacks the first piston, the second spring jacks the second piston, and the third joint feeds oil into the oil cavity of the cavity through the oil feeding channel and enters the cylinder body through the oil feeding pore channel, so that the oil in the oil-gas separator is temporarily stored in the oil accumulator, and the possibility that oil drops are carried by compressed air is reduced.
In embodiment 2, as shown in fig. 11, four gas outlet ports capable of enclosing a circle and communicating with the second gas flow channel 13 are formed in the first valve seat 1, four gas inlet ports capable of enclosing a circle and communicating with the third gas flow channel 26 are formed in the second valve seat 2, correspondingly, the gas pipes 8 are four hollow connecting rods, each gas pipe 8 is connected between the respective gas outlet port and the respective gas inlet port to connect the first valve seat 1 and the second valve seat 2 into a whole, and the gas pipes 8 are arranged around the cylinder 3. Other structures refer to embodiment 1, in this embodiment, a separate connecting rod is not provided, but the air pipe 8 is used as the connecting rod, and the connecting rod serves to connect the first valve seat 1 and the second valve seat 2, so that a connecting rod part is omitted, and the structure is compact.
Application example, as shown in fig. 12, the oil reservoir 10 of example 1 is applied to an air compressor, the air outlet end of the main unit 100 is connected to the first joint 11, the air inlet end of the main unit 100 is connected to the second joint 21, and the oil outlet end of the oil separator 101 is connected to the third joint 23.
Claims (8)
1. An oil reservoir is characterized by comprising
A first valve seat (1) having a first joint (11) for air intake, and a first air flow passage (12) and a second air flow passage (13) connected to the first joint (11);
the second valve seat (2) is arranged at an interval with the first valve seat (1) and is provided with a second joint (21) for oil outlet and a third joint (23) for oil inlet, a cavity (22), a third air flow channel (26), an oil inlet pore channel (27) and an oil outlet channel (25) are arranged in the second valve seat (2), the cavity (22) further comprises an air cavity and an oil cavity, the air cavity is communicated with the third air flow channel (26), the oil inlet pore channel (27) is connected between the third joint (23) and the oil cavity, the oil outlet channel (25) is connected with the second joint (21), and the second valve seat (2) is provided with an oil inlet pore channel (24) which can be communicated with the oil cavity;
an air pipe (8) connected between the air outlet end of the second air flow channel (13) and the air inlet end of the third air flow channel (26);
the cylinder body (3) is arranged between the first valve seat (1) and the second valve seat (2) in a sealing mode, one end of the inner cavity of the cylinder body (3) is communicated with the air outlet end of the first air flow channel (12), and the other end of the inner cavity of the cylinder body is communicated with the oil outlet channel (25) and the oil inlet channel (24);
a first piston (4) provided in the cylinder (3);
a first spring (41) which is arranged in the cylinder (3) and is used for resetting the first piston (4);
a second piston (5) arranged in the cavity (22) of the second valve seat (2); and
and a second spring (51) which is provided in the cavity (22) of the second valve seat (2) and is used for resetting the second piston (5).
2. The oil reservoir as claimed in claim 1, characterized in that the chamber (22) of the second seat (2) is provided at one end with a first plug (61) of adjustable depth, the second spring (51) being urged at one end against the second piston (5) and at the other end against the first plug (61).
3. Oil reservoir according to claim 2, characterized in that the other end of the cavity (22) of the second valve seat (2) is provided with a second plug (62) of adjustable depth.
4. The oil reservoir as claimed in claim 1, characterized in that the inner wall of the first valve seat (1) has a first groove (14), a protrusion (44) capable of extending into the first groove (14) is protruded from one side of the first piston (4) close to the first valve seat (1), a second groove (43) is axially formed in the first piston (4), the second groove (43) extends to the inner cavity of the protrusion (44), a core rod (42) is arranged in the second groove (43), and the first spring (41) is positioned in the second groove (43) and sleeved outside the core rod (42).
5. The oil reservoir as claimed in claim 1, characterized in that the first and second valve seats (1, 2) are connected as one body by a plurality of connecting rods (7), and the connecting rods (7) are arranged around the cylinder (3).
6. The oil accumulator of claim 1, characterized in that the first valve seat (1) is provided with at least three gas outlet ports capable of enclosing a circle and communicated with the second gas flow channel (13), the second valve seat (2) is provided with at least three gas inlet ports capable of enclosing a circle and communicated with the third gas flow channel (26), correspondingly, the gas pipes (8) are at least three hollow connecting rods, each gas pipe (8) is connected between the respective gas outlet port and the gas inlet port to connect the first valve seat (1) and the second valve seat (2) into a whole, and the gas pipes (8) are arranged around the cylinder (3).
7. Oil reservoir according to claim 1, characterized in that the second joint (21) is provided with a non-return valve.
8. An air compressor with an oil accumulator as claimed in any one of claims 1 to 7, comprising a main machine (100), the oil accumulator and an oil-gas separator (101), wherein the air outlet end of the main machine (100) is connected with a first joint (11), the air inlet end of the main machine (100) is connected with a second joint (21), and the oil outlet end of the oil-gas separator (101) is connected with a third joint (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715714.6A CN111734606B (en) | 2020-07-23 | 2020-07-23 | Oil accumulator and air compressor using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715714.6A CN111734606B (en) | 2020-07-23 | 2020-07-23 | Oil accumulator and air compressor using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111734606A true CN111734606A (en) | 2020-10-02 |
| CN111734606B CN111734606B (en) | 2024-09-13 |
Family
ID=72657337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010715714.6A Active CN111734606B (en) | 2020-07-23 | 2020-07-23 | Oil accumulator and air compressor using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111734606B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2197361A1 (en) * | 1996-04-03 | 1997-10-04 | Tecumseh Products Company | Improved suction inlet connector for hermetic compressor |
| CN105673485A (en) * | 2016-01-15 | 2016-06-15 | 沈阳天朗艾尔压缩机有限公司 | Sliding-vane air compressor |
| CN205977632U (en) * | 2016-08-12 | 2017-02-22 | 宁波泰格尔机械有限公司 | Piston air pump |
| CN108087275A (en) * | 2017-12-28 | 2018-05-29 | 广东美芝制冷设备有限公司 | Low back pressure compressor |
| CN212928124U (en) * | 2020-07-23 | 2021-04-09 | 宁波天风汽车科技有限公司 | Oil accumulator and air compressor applying same |
-
2020
- 2020-07-23 CN CN202010715714.6A patent/CN111734606B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2197361A1 (en) * | 1996-04-03 | 1997-10-04 | Tecumseh Products Company | Improved suction inlet connector for hermetic compressor |
| CN105673485A (en) * | 2016-01-15 | 2016-06-15 | 沈阳天朗艾尔压缩机有限公司 | Sliding-vane air compressor |
| CN205977632U (en) * | 2016-08-12 | 2017-02-22 | 宁波泰格尔机械有限公司 | Piston air pump |
| CN108087275A (en) * | 2017-12-28 | 2018-05-29 | 广东美芝制冷设备有限公司 | Low back pressure compressor |
| CN212928124U (en) * | 2020-07-23 | 2021-04-09 | 宁波天风汽车科技有限公司 | Oil accumulator and air compressor applying same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111734606B (en) | 2024-09-13 |
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