CN111486078A - Two-stage series miniature air pump - Google Patents

Two-stage series miniature air pump Download PDF

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Publication number
CN111486078A
CN111486078A CN202010458806.0A CN202010458806A CN111486078A CN 111486078 A CN111486078 A CN 111486078A CN 202010458806 A CN202010458806 A CN 202010458806A CN 111486078 A CN111486078 A CN 111486078A
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China
Prior art keywords
pump
motor
side pump
eccentric shaft
cylinder
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CN202010458806.0A
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Chinese (zh)
Inventor
吕健强
崔迎健
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Yuanxun Intelligent Technology Shanghai Co ltd
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Yuanxun Intelligent Technology Shanghai Co ltd
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Priority to CN202010458806.0A priority Critical patent/CN111486078A/en
Publication of CN111486078A publication Critical patent/CN111486078A/en
Pending legal-status Critical Current

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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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B25/00—Multi-stage pumps
    • F04B25/005—Multi-stage pumps with two cylinders

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Abstract

The invention discloses a two-stage series micro air pump which comprises a left side pump, a right side pump and a motor, wherein the left side pump and the right side pump respectively comprise a pump body, a cylinder body arranged at the upper end of the pump body, a cylinder cover arranged above the cylinder body, a valve block arranged between the cylinder body and the cylinder cover, a piston arranged in the cylinder body, a connecting rod arranged at the lower end of the piston, an eccentric shaft driven by the motor and a bearing sleeved outside the eccentric shaft, wherein the lower end of the connecting rod is connected with the bearing, the cylinder cover of the left side pump is provided with a first air inlet and a first air outlet, the cylinder cover of the right side pump is provided with a second air inlet and a second air outlet, the eccentric distance of the eccentric shaft of the left side pump is 0.9-1.0mm, and the eccentric distance of the eccentric shaft. The invention can realize the purpose of improving the highest output pressure without changing a plurality of parts, is easier to organize production, reduces inventory, has short production period and lower cost, and can meet different requirements of different customers.

Description

Two-stage series miniature air pump
Technical Field
The invention belongs to the technical field of air pumps, and particularly relates to a two-stage series connection micro air pump.
Background
In the market of traditional high-pressure swing piston air pumps or piston air compressors, in order to enable output pressure to reach 1.5 to 2 times of high pressure of a single-head pump, the cylinder diameter of a pump at an air inlet end is generally kept unchanged, the cylinder diameter of a pump at an air outlet end is reduced, and the distance (top clearance) between the top of a piston and a cylinder body is kept unchanged so as to change stroke volume, so that the purpose of doubling the highest output pressure is achieved, and meanwhile, under the condition of two-stage pressurization, loads borne by two ends of a double-output-shaft motor are balanced. When the air pump works, air is firstly sucked from the air inlet at one end, then is led into the air inlet of the pump head at the high-pressure end (secondary pressurization) by the air communicating pipe after coming out from the air outlet at the end, and finally the pressure is output from the air outlet at the high-pressure end. However, in the market of diversified requirements and single-piece small-batch production of the existing equipment, the diameter of the cylinder is changed, and a plurality of parts such as a piston, a leather cup, a gland, a cylinder body, a cylinder cover and a gasket need to be changed, so that the existing equipment is very complicated, is not easy to organize production, and has low production efficiency, long production period and high cost.
Therefore, there is a need in the art for an air pump that does not require a change in parts, is easier to organize and produce, has a small inventory, is short in production cycle, is less costly, and can effectively increase the maximum output pressure.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a two-stage series micro air pump which does not need to change a plurality of parts, is easier to produce, has short production period and lower cost and can effectively improve the highest output pressure.
The invention is realized by the following technical scheme: a two-stage series micro air pump comprises a left pump, a right pump and a motor, wherein the left pump and the right pump respectively comprise a pump body, a cylinder body arranged at the upper end of the pump body, a cylinder cover arranged above the cylinder body, a valve block arranged between the cylinder body and the cylinder cover, a piston arranged in the cylinder body, a connecting rod arranged at the lower end of the piston, an eccentric shaft driven by the motor and a bearing sleeved outside the eccentric shaft, the lower end of the connecting rod is connected with the bearing, the cylinder cover of the left pump is provided with a first air inlet and a first air outlet, the cylinder cover of the right pump is provided with a second air inlet and a second air outlet, the eccentricity of the eccentric shaft of the left pump is 0.9-1.0mm, and the eccentricity of the eccentric shaft of the right pump is 0.55-0.65 mm.
And the top of the connecting rod is provided with an adjusting gasket.
The motor is positioned between the left side pump and the right side pump, the motor is a double-output-shaft motor, the left end and the right end of a main body of the motor are respectively connected with the left side pump and the right side pump through motor fastening screws, and a left driving shaft and a right driving shaft of the double-output-shaft motor are respectively connected with the eccentric shaft of the left side pump and the eccentric shaft of the right side pump.
The first air inlet the first exhaust port set up in the cylinder cap right side of left side pump, the second air inlet the second exhaust port set up in the cylinder cap left side of right side pump.
The side surface of the eccentric shaft is provided with a screw hole which extends inwards to the driving shaft of the motor, a counterweight screw is screwed in the screw hole, the front end of the counterweight screw abuts against the driving shaft of the motor, and the eccentric shaft is fixedly connected with the driving shaft of the motor through the counterweight screw.
The cylinder cover is connected with the cylinder body and the pump body through cylinder cover screws.
The right side of the left side pump and the left side of the right side pump are respectively connected with a rear cover through a left rear cover screw and a right rear cover screw.
The piston comprises a gland and a leather cup arranged on the outer circumference of the gland, a pressing plate is arranged at the top of the connecting rod, the inner ring of the leather cup is located between the gland and the pressing plate, and the gland is connected with the pressing plate through a connecting rod screw.
The invention has the beneficial effects that: the invention can realize the purpose of improving the highest output pressure without changing a plurality of parts, is easier to organize production, reduces inventory, has short production period and lower cost, and can meet different requirements of different customers.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic top view of the present invention;
fig. 4 is a schematic sectional view taken along the direction B-B in fig. 3.
In the figure: 1-valve plate; 2-cylinder cover; 3-cylinder body; 4-a pump body; 5-pressing the cover; 6-leather cup; 7-connecting rod screw; 8-connecting rod; 9-rear cover; 10-rear cover screw; 11-a counterweight screw; 12-motor fastening screws; 13-an eccentric shaft; 14-a bearing; 15-a motor; 16-cylinder head screws; 17-left pump; 18-a first air inlet; 19-a first exhaust port; 20-right pump; 21-a second air inlet; 22-second exhaust port.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in FIGS. 1-4, a two-stage series micro air pump comprises a left pump 17, a right pump 20 and a motor 15, wherein the left pump 17 and the right pump 20 respectively comprise a pump body 4, a cylinder body 3 arranged at the upper end of the pump body 4, and a cylinder cover 2 arranged above the cylinder body 3, the valve plate 1 is arranged between the cylinder body 3 and the cylinder cover 2, the piston is arranged in the cylinder body 3, the connecting rod 8 is arranged at the lower end of the piston, the eccentric shaft 13 which is arranged in the pump body 4 and driven by the motor 15 and the bearing 14 which is sleeved outside the eccentric shaft 13 are arranged, the lower end of the connecting rod 8 is connected with the bearing 14, the cylinder cover 2 of the left side pump 17 is provided with a first air inlet 18 and a first exhaust port 19, the cylinder cover 2 of the right side pump 20 is provided with a second air inlet 21 and a second exhaust port 22, the eccentricity of the eccentric shaft 13 of the left side pump 17 is 0.9-1.0mm, and the eccentricity of the eccentric shaft 13 of the right side pump 20 is 0.
The experiment shows that the design is effective, the positive pressure can reach more than 0.4MPa, the left side pump 17 can be used as the first stage, the right side pump 20 can be used as the second stage, the reverse can be adopted, the right side pump 20 can be used as the first stage, and the left side pump 17 can be used as the second stage, the main difference is that the flow is different, the output flow of the former is about 3L/min, the output pressure of the latter is about 5L/min, the output pressure is slightly different, the output pressure of the former is slightly lower, the power consumption is different, the second exhaust port 22 is connected with the first air inlet 18 through an air pipe joint, the second air inlet 21 is the air inlet of the whole equipment, and the first exhaust port 19 is the exhaust port of the whole equipment.
Two-stage series connection miniature air pump experiment data table
Figure BDA0002510177840000041
Figure BDA0002510177840000051
In the table, the right-hand connection with the left-hand connection means that the right-hand pump 20 serves as a first stage and the left-hand pump 17 serves as a second stage; the left-right connection means that the left pump 17 is used as a first stage and the right pump 20 is used as a second stage. In combination, it is preferred to use the right pump 20 as the first stage and the left pump 17 as the second stage.
In the invention, after the eccentric shafts 13 with different axle center distances are arranged, the top clearance of the pump (the distance from the top surface of the piston to the top surface of the cylinder body) is changed, so that one or more adjusting gaskets are added at the top of the connecting rod 8 to eliminate or reduce the top clearance, thereby greatly reducing the stock overstock, shortening the production period and greatly expanding the product variety to meet various requirements.
The motor 15 is located between the left pump 17 and the right pump 20, the motor 15 is a double-output-shaft motor 15, the left end and the right end of the main body of the motor 15 are respectively connected with the left pump 17 and the right pump 20 through motor fastening screws 12, and the left driving shaft and the right driving shaft of the double-output-shaft motor 15 are respectively connected with the eccentric shaft 13 of the left pump 17 and the eccentric shaft 13 of the right pump 20.
The first air inlet 18 and the first air outlet 19 are arranged on the right side of the cylinder cover 2 of the left side pump 17, and the second air inlet 21 and the second air outlet 22 are arranged on the left side of the cylinder cover 2 of the right side pump 20, so that a user can conveniently install an air inlet pipe joint and an air outlet pipe joint.
The side of the eccentric shaft 13 is provided with a screw hole extending inwards to the driving shaft of the motor 15, a balance weight screw 11 is screwed in the screw hole, the front end of the balance weight screw 11 abuts against the driving shaft of the motor 15, and the eccentric shaft 13 is tightly connected with the driving shaft of the motor 15 through the balance weight screw 11.
The cylinder head 2 is connected to the cylinder body 3 and the pump body 4 by a cylinder head screw 16. The right side of the left pump 17 and the left side of the right pump 20 are respectively connected to a rear cover 9 by left and right rear cover screws 10. The piston includes gland 5 and sets up in the leather cup 6 of the outer circumference of gland 5, and the top of connecting rod 8 is provided with the clamp plate, and the leather cup 6 inner circle is located between gland 5 and the clamp plate, and gland 5 passes through connecting rod screw 7 and is connected with the clamp plate.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims (8)

1. A two-stage series micro air pump is characterized in that: the second-stage series connection micro air pump comprises a left-side pump, a right-side pump and a motor, wherein the left-side pump and the right-side pump respectively comprise a pump body, a cylinder body arranged at the upper end of the pump body, a cylinder cover arranged above the cylinder body, a valve block arranged between the cylinder body and the cylinder cover, a piston arranged in the cylinder body, a connecting rod arranged at the lower end of the piston, an eccentric shaft driven by the motor and a bearing sleeved outside the eccentric shaft, the lower end of the connecting rod is connected with the bearing, the cylinder cover of the left-side pump is provided with a first air inlet and a first exhaust port, the cylinder cover of the right-side pump is provided with a second air inlet and a second exhaust port, the eccentric distance of the eccentric shaft of the left-side pump is 0.9-1.0mm, and the eccentric distance of the eccentric shaft of the.
2. The two-stage series micro air pump according to claim 1, wherein: and the top of the connecting rod is provided with an adjusting gasket.
3. The two-stage series micro air pump of claim 2, wherein: the motor is positioned between the left side pump and the right side pump, the motor is a double-output-shaft motor, the left end and the right end of a main body of the motor are respectively connected with the left side pump and the right side pump through motor fastening screws, and a left driving shaft and a right driving shaft of the double-output-shaft motor are respectively connected with the eccentric shaft of the left side pump and the eccentric shaft of the right side pump.
4. The two-stage series micro air pump according to claim 3, wherein: the first air inlet the first exhaust port set up in the cylinder cap right side of left side pump, the second air inlet the second exhaust port set up in the cylinder cap left side of right side pump.
5. The two-stage series micro air pump according to claim 4, wherein: the side surface of the eccentric shaft is provided with a screw hole which extends inwards to the driving shaft of the motor, a counterweight screw is screwed in the screw hole, the front end of the counterweight screw abuts against the driving shaft of the motor, and the eccentric shaft is fixedly connected with the driving shaft of the motor through the counterweight screw.
6. The two-stage series micro air pump according to claim 5, wherein: the cylinder cover is connected with the cylinder body and the pump body through cylinder cover screws.
7. The two-stage series micro air pump according to claim 6, wherein: the right side of the left side pump and the left side of the right side pump are respectively connected with a rear cover through a left rear cover screw and a right rear cover screw.
8. The two-stage series micro air pump according to claim 7, wherein: the piston comprises a gland and a leather cup arranged on the outer circumference of the gland, a pressing plate is arranged at the top of the connecting rod, the inner ring of the leather cup is located between the gland and the pressing plate, and the gland is connected with the pressing plate through a connecting rod screw.
CN202010458806.0A 2020-05-27 2020-05-27 Two-stage series miniature air pump Pending CN111486078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010458806.0A CN111486078A (en) 2020-05-27 2020-05-27 Two-stage series miniature air pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010458806.0A CN111486078A (en) 2020-05-27 2020-05-27 Two-stage series miniature air pump

Publications (1)

Publication Number Publication Date
CN111486078A true CN111486078A (en) 2020-08-04

Family

ID=71813454

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010458806.0A Pending CN111486078A (en) 2020-05-27 2020-05-27 Two-stage series miniature air pump

Country Status (1)

Country Link
CN (1) CN111486078A (en)

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