CN115977912B - Multistage supercharging air pump for vehicle - Google Patents
Multistage supercharging air pump for vehicle Download PDFInfo
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- CN115977912B CN115977912B CN202310013263.5A CN202310013263A CN115977912B CN 115977912 B CN115977912 B CN 115977912B CN 202310013263 A CN202310013263 A CN 202310013263A CN 115977912 B CN115977912 B CN 115977912B
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- pipe
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- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 15
- 238000012423 maintenance Methods 0.000 claims description 14
- 230000017525 heat dissipation Effects 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 9
- 238000000605 extraction Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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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 relates to a multistage booster pump for a vehicle, which comprises a primary booster pump and a driving mechanism, wherein an output shaft of the driving mechanism drives the primary booster pump to work. One end of the primary booster pump, which is away from the driving mechanism, is provided with a booster pump shell, an intermediate shaft is coaxially arranged in the inner cavity of the booster pump shell in a rotating way, and a spiral plate is sleeved on the intermediate shaft. The outside of the exhaust port of the primary booster pump is connected with a primary exhaust pipe in a penetrating way. The outside of the booster pump shell is provided with a secondary exhaust pipe which is communicated with the first gas ring inside the booster pump shell and an air inlet branch pipe which is communicated with the third gas ring. The air inlet branch pipe is connected with the primary exhaust pipe in a penetrating way, and the primary exhaust pipe, the air inlet branch pipe and the secondary exhaust pipe are all provided with electric control stop valves. The invention adopts a multi-stage supercharging air pump to output high-pressure air with different pressures, simultaneously meets the requirements of various air utilization systems in the vehicle, reduces the space occupied in the vehicle and reduces the production cost.
Description
Technical Field
The invention belongs to the technical field of booster pumps, and particularly relates to a multistage booster air pump for a vehicle.
Background
Many automobiles are equipped with air booster pumps to provide high pressure air to the air spring system of the automobile, or to automatically supplement air to the tires, or to control other pneumatic control mechanisms on the automobile.
The air spring system, the tire automatic air supply system and other pneumatic control mechanisms on the vehicle require different pressures of high-pressure air, and in order to match the pressures, a plurality of air pumps are sometimes required to be installed on the vehicle so as to output the high-pressure air with different pressures.
The arrangement mode of the multiple pumps improves the purchase cost of parts in the whole vehicle production process, and occupies more space in the vehicle.
Disclosure of Invention
The invention aims to solve the technical problems that: the invention provides a multistage pressurized air pump for a vehicle, which is used for outputting high-pressure air with different pressures by adopting the multistage pressurized air pump, and simultaneously meeting the requirements of various air utilization systems in the vehicle, reducing the occupied space in the vehicle and lowering the production cost.
The invention solves the problems existing in the prior art by adopting the technical scheme that:
the automobile-used multistage booster pump includes one-level booster pump and actuating mechanism, and actuating mechanism's output shaft drives one-level booster pump work.
One end of the primary booster pump, which is away from the driving mechanism, is provided with a booster pump shell, an intermediate shaft is coaxially arranged in the inner cavity of the booster pump shell in a rotating way, the end part of the intermediate shaft is connected with the output shaft of the driving mechanism through the primary booster pump, a spiral plate is sleeved on the intermediate shaft, the section of the inner cavity of the booster pump shell is funnel-shaped, and the end face of the spiral plate is abutted to the inner cavity wall of the booster pump shell.
The outside of the exhaust port of the primary booster pump is connected with a primary exhaust pipe in a penetrating way.
The outer part of the inner cavity of the booster pump shell is sleeved with a first gas ring and a third gas ring, the first gas ring is in through connection with the inner cavity of the booster pump shell through a plurality of first through holes, the third gas ring is in through connection with the inner cavity of the booster pump shell through a plurality of third through holes, and the inner diameter of the through connection part of the inner cavity of the booster pump shell and the third gas ring is larger than that of the through connection part of the inner cavity of the booster pump shell and the first gas ring.
The outside of the booster pump shell is provided with a secondary exhaust pipe which is communicated with the first gas ring and an air inlet branch pipe which is communicated with the third gas ring.
The air inlet branch pipe is connected with the first-stage exhaust pipe in a penetrating way,
the first-stage exhaust pipe, the air inlet branch pipe and the second-stage exhaust pipe are respectively provided with an electric control stop valve.
Preferably, the primary booster pump comprises a pump shell, a driving device, a piston, a cylinder, an air inlet pipe and an exhaust pipe.
The driving device is rotatably arranged in the pump shell, the upper end of an input shaft of the driving device vertically penetrates through the outside of the pump shell, and the driving mechanism drives the input shaft to rotate.
The side surface of the driving device is internally concave with an annular groove, and the row line of the annular groove comprises a plurality of maintenance curves which are arranged at intervals and concentric with equal diameters, and cam curves which are convexly arranged between two adjacent maintenance curves.
The outer side of the pump shell is connected with a plurality of air cylinders in a penetrating way, and the axes of the air cylinders are distributed along the radial direction of the maintenance curve.
The piston comprises a piston head, a connecting rod and a ball head, wherein the piston head and the ball head are respectively connected with two ends of the connecting rod, the piston head is arranged in the cylinder in a sliding mode, and the ball head is arranged in the annular groove in a sliding mode.
And the air inlet pipe and the air outlet pipe which are communicated with the inside of the air cylinder are arranged on the end surface of the air cylinder, which is away from the pump shell.
The air inlet pipe is connected with a valve in series, the air outlet pipe is connected with a one-way valve in series, and all the air outlet pipes are connected with the primary air outlet pipe in a penetrating way.
One end of the driving device, which is away from the input shaft, is provided with an output shaft, the output shaft penetrates through the pump shell, and the tail end of the output shaft is connected with the intermediate shaft.
Preferably, the driving device comprises an upper rotary table and a lower rotary table which are sequentially arranged from top to bottom, and the upper rotary table is connected with the lower rotary table through bolts.
The upper end face of the lower rotary table is internally concave, the lower end of the upper rotary table is internally concave, the radian of the radial section of each annular groove is more than or equal to 95 degrees and less than 180 degrees, the two grooves are buckled with each other to form an annular groove, and an opening is formed in one side of the annular groove, which faces away from the axis of the driving device.
An input shaft is vertically and fixedly connected above the upper rotary table, and the axis of the input shaft coincides with the axis of the maintenance curve.
An output shaft is arranged below the lower rotary table and is coaxially arranged with the input shaft.
Preferably, a second air ring is arranged in the booster pump shell and between the first air ring and the third air ring, and the second air ring is communicated with the inner cavity of the booster pump shell through a plurality of second through holes.
An intermediate exhaust pipe which is in through connection with the second gas ring is arranged outside the booster pump shell, and an electric control stop valve is arranged on the intermediate exhaust pipe.
Preferably, the tail end of the output shaft is fixed with an upper linkage gear.
The top of the intermediate shaft is fixed with a lower linkage gear.
The upper linkage gear and the lower linkage gear are sleeved with a sliding sleeve, a tooth surface and a smooth surface are arranged in the sliding sleeve, the smooth surface is positioned above the tooth surface, the tooth surface is higher than the lower linkage gear, and the smooth surface is higher than the upper linkage gear.
The tooth surface is simultaneously meshed and connected with the upper linkage gear and the lower linkage gear through the sliding sleeve vertically; or the tooth surface is meshed with the lower linkage gear, and the smooth surface is sleeved outside the upper linkage gear.
The outside of the sliding sleeve is provided with an upper clamping ring and a lower clamping ring, a rotating ring is clamped between the two clamping rings, a spring is arranged above the rotating ring, the spring is sleeved outside the sliding sleeve, and the upper end and the lower end of the spring are respectively abutted against the bottom surface of the pump shell and the top surface of the rotating ring.
The sliding sleeve, the swivel and the spring are sleeved with a housing together, an air inlet hole is formed in the position, below the swivel, of the housing, a control air branch pipe is connected to the outer portion of the air inlet hole in a penetrating mode, and the control air branch pipe is connected to the air inlet branch pipe in a penetrating mode.
The control air branch pipe is positioned on a pipeline between the electric control stop valve on the air branch pipe and the third air ring at the through connection position of the air branch pipe.
Preferably, the cam curve comprises an air suction curve and an air discharge curve which are sequentially connected.
The line length of the air extraction curve is the same as that of the air exhaust curve, and the curvature of the air extraction curve is larger than that of the air exhaust curve.
Preferably, the outer side of the bottom of the lower rotary table is sleeved with a toothed ring fixedly connected with the lower rotary table, and the tooth surface of the toothed ring is upwards arranged.
The connecting rod is coaxially fixed with a gear which is meshed with the toothed ring.
Preferably, the two ends of the air cylinder are arranged in an open way, one end of the air cylinder is in through connection with the pump shell, the other end of the air cylinder is provided with a panel, and the air inlet pipe and the air outlet pipe are fixedly connected with the panel.
An annular boss is convexly arranged on the inner side of one end of the cylinder, which is connected with the pump shell, a ceramic cylinder sleeve is clamped between the annular boss and the panel, and a piston head is arranged inside the ceramic cylinder sleeve in a sliding manner.
Preferably, an annular heat dissipation cavity is arranged in the inner wall of the cylinder, and a plurality of second through holes are formed in the end face, facing the ceramic cylinder sleeve, of the heat dissipation cavity.
The bottom surface of the air cylinder is provided with an inlet communicated with the heat dissipation cavity, and the top surface of the air cylinder is provided with an outlet communicated with the heat dissipation cavity.
Preferably, the diameter of the inlet is larger than that of the outlet, and the shape of the outlet is a truncated cone.
Compared with the prior art, the invention has the beneficial effects that:
(1) The multi-stage supercharging can be realized, and meanwhile, each stage of supercharging can lead out the air after supercharging to obtain high-pressure air with different pressures, so that different air consumption requirements are met.
(2) The annular groove of the primary booster pump comprises an air extraction curve, an air exhaust curve and a maintenance curve, the maintenance curve can ensure that the volume of the piston chamber is kept unchanged for a period of time, and thus the air inlet time can be prolonged, and the air inlet amount is improved.
(3) The driving device drives the pistons to move, so that at least one cylinder can exhaust at any moment, and the consistency of the exhaust of the main exhaust pipe and the stability of the pressure are further ensured.
Drawings
The invention will be further described with reference to the drawings and examples.
Figure 1 is a first external view of the multi-stage pressurized air pump for vehicles of the present invention,
figure 2 is a sectional view of the multi-stage pressurized air pump for a vehicle of the present invention,
figure 3 is a sectional view of the pressurizing part of the multistage pressurizing air pump for vehicle of the present invention,
figure 4 is an enlarged view of a portion of figure 3 at a,
figure 5 is a hierarchical view of a locking linkage structure of the multistage booster air pump for the vehicle,
figure 6 is a view showing the appearance of the pressurizing screw of the multistage pressurizing air pump for the vehicle,
figure 7 is a cross-sectional view of a third air ring of the multi-stage pressurized air pump for a vehicle of the present invention,
figure 8 is a cross-sectional view of the second air ring of the multi-stage pressurized air pump for a vehicle of the present invention,
figure 9 is a cross-sectional view of a first air ring of the multi-stage pressurized air pump for a vehicle of the present invention,
figure 10 is a view of the external appearance of the one-stage booster pump of the multi-stage booster pump for the vehicle of the invention,
figure 11 is a transverse exploded view of the vehicular multi-stage booster pump of the present invention,
figure 12 is a view of the pump body of the one-stage booster pump of the vehicular multi-stage booster air pump of the invention,
figure 13 is an outline view of the driving mechanism of the one-stage booster pump of the multi-stage booster pump for the vehicle of the invention,
figure 14 is a cross-sectional view of figure 13,
figure 15 is an exploded view of figure 13,
figure 16 is an exploded view of the support ring of the one-stage booster pump of the vehicular multi-stage booster pump of the present invention,
figure 17 is a cross-sectional view of a piston of a one-stage booster pump of a multi-stage booster pump for a vehicle of the present invention,
figure 18 is a cross-sectional view of a cylinder of a one-stage booster pump of a multi-stage booster pump for a vehicle according to the present invention,
FIG. 19 is a schematic view of a cam row of a multi-stage booster pump for a vehicle in accordance with the present invention.
In the figure: 1-pump housing, 101-lower pump housing, 1011-lower connection half slot, 1012-lower through hole, 102-upper pump housing, 1021-upper connection half slot, 2-drive, 201-lower rotary disk, 2011-output shaft, 2012-upper linkage gear, 202-upper rotary disk, 2021-input shaft, 203-toothed ring, 204-annular groove, 2041-pumping curve, 2042-exhaust curve, 2043-maintenance curve, 3-piston, 301-piston head, 3011-piston ring groove, 3012-first heat sink, 302-connecting rod, 3021-stiffener, 303-ball head, 304-gear, 4-piston ring, 5-support ring, 501-lower support ring, 5011-semicircular groove, 502-ball, 503-upper fixing ring 5031-first through hole, 6-cylinder, 601-panel, 602-second heat sink, 603-heat dissipation cavity, 604-second through hole, 605-inlet, 606-outlet, 608-boss, 7-ceramic cylinder liner, 8-air inlet pipe, 9-valve, 10-exhaust pipe, 11-check valve, 12-exhaust connection pipe, 1201-first stage exhaust pipe, 13-driving mechanism, 14-fixed bracket, 15-booster pump case, 1501-first air ring, 1501-first through hole, 1502-second air ring, 15021-second through hole, 1503-third air ring, 15031-third through hole, 16-intermediate shaft, 1601-spiral plate, 1602-lower linkage gear, 17-housing, 1701-air inlet hole, 1702-spring, 18-sliding sleeve, 19-swivel, 20-secondary exhaust pipe, 21-middle exhaust pipe, 22-air inlet branch pipe and 23-control air branch pipe.
Detailed Description
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The multistage pressurized air pump for a vehicle according to the present invention will be described in further detail with reference to the accompanying drawings, but is not intended to limit the present invention.
The automobile-used multistage booster pump includes one-level booster pump and actuating mechanism 13, and the output shaft of actuating mechanism 13 drives one-level booster pump work.
One end of the primary booster pump, which is away from the driving mechanism 13, is provided with a booster pump shell 15, an intermediate shaft 16 is coaxially arranged in the inner cavity of the booster pump shell 15 in a rotating way, the end part of the intermediate shaft 16 is connected with the output shaft of the driving mechanism 13 through the primary booster pump, a spiral plate 1601 is sleeved on the intermediate shaft 16, the cross section of the inner cavity of the booster pump shell 15 is funnel-shaped, and the end face of the spiral plate 1601 is abutted with the inner cavity wall of the booster pump shell 15.
A primary exhaust pipe 1201 is connected to the outside of the exhaust port of the primary booster pump.
The first air ring 1501 and the third air ring 1503 are sleeved outside the inner cavity of the booster pump shell 15, the first air ring 1501 is in through connection with the inner cavity of the booster pump shell 15 through a plurality of first through holes 15011, the third air ring 1503 is in through connection with the inner cavity of the booster pump shell 15 through a plurality of third through holes 15031, and the inner diameter of the through connection part between the inner cavity of the booster pump shell 15 and the third air ring 1503 is larger than that of the through connection part with the first air ring 1501.
The booster pump housing 15 is provided with a secondary exhaust pipe 20 connected to the first gas ring 1501 and an intake manifold 22 connected to the third gas ring 1503.
The intake manifold 22 is connected to the primary exhaust pipe 1201.
The primary exhaust pipe 1201, the intake branch pipe 22 and the secondary exhaust pipe 20 are provided with electrically controlled shut-off valves.
The primary booster pump includes a pump housing 1, a driving device 2, a piston 3, a cylinder 6, an intake pipe 8, and an exhaust pipe 10.
The pump shell 1 comprises an upper pump shell 102 and a lower pump shell 101 which are fastened up and down, the main bodies of the lower pump shell 101 and the upper pump shell 102 are round, and the upper pump shell 102 and the lower pump shell 101 are fixedly connected through bolts.
A plurality of lower connecting semicircular grooves 1011 are connected to the outer circumferential surface of the lower pump casing 101, and a plurality of upper connecting semicircular grooves 1021 are connected to the outer circumferential surface of the upper pump casing 102. The lower connecting semicircular grooves 1011 and the upper connecting semicircular grooves 1021 are in one-to-one correspondence and are mutually buckled, and the lower connecting semicircular grooves 1011 and the upper connecting semicircular grooves 1021 are buckled to form a round tube.
The driving device 2 is rotatably arranged in the pump shell 1, and the rotating shaft of the driving device 2 is coincident with the axis of the pump shell 1.
The upper end of the input shaft 2021 of the driving device 2 is vertically penetrated outside the pump casing 1, and the axis of the input shaft 2021 coincides with the axis of the pump casing 1. The driving mechanism 13 drives the input shaft 2021 to rotate, in this embodiment, the driving mechanism 13 adopts a motor, and an output shaft of the motor is arranged downward and is connected with the input shaft 2021 through a coupling. The driving mechanism 13 is fixedly connected with the outer top surface of the upper pump shell 102 through a fixed bracket 14. To reduce vibration, a shock absorber, such as a shock-absorbing rubber pad, may be added to the connection between the fixing bracket 14 and the upper pump housing 102 and the driving mechanism 13.
The side surface of the driving device 2 is internally recessed with an annular groove 204, and the row line of the annular groove 204 comprises a plurality of maintaining curves 2043 which are arranged at intervals and concentric with equal diameters and cam curves which are convexly arranged between two adjacent maintaining curves 2043.
The outer side of the pump shell 1 is in through connection with a plurality of air cylinders 6, the axes of the air cylinders 6 are distributed along the radial direction of the maintenance curve 2043, and the air cylinders 6 are buckled with the lower connecting semicircular groove 1011 and the upper connecting semicircular groove 1021 to form a circular tube coaxial through connection.
The piston 3 comprises a piston head 301, a connecting rod 302 and a ball head 303, wherein the piston head 301 and the ball head 303 are respectively connected with two ends of the connecting rod 302, the piston head 301 is slidably arranged in the cylinder 6, and the ball head 303 is slidably arranged in the annular groove 204. The space between the piston head 301 and the faceplate 601 of the cylinder 6 is a piston chamber.
In order to avoid the ball 303 falling off during the movement, in this embodiment, the radian of the inner wall of the radial section of the annular groove 204 is less than or equal to 350 ° and greater than 180 °, so that an opening with radian less than 180 ° is formed. The diameter of the ball 303 is the same as the diameter of the radial section of the annular groove 204, so that a part of the ball 303 leaks out of the annular groove 204 and is fixedly connected with the connecting rod 302. The area of the ball 303 leaking to the outside of the annular groove 204 is smaller than half of the total area of the ball 303, so that the ball 303 is ensured to be clamped inside the annular groove 204.
Thus, the drive 2 is rotated and the ball 303 is moved along the row of annular grooves 204 to push or pull the head 301. When the ball 303 comes into contact with the cam curve, the piston head 301 is pushed and pulled. When the ball 303 comes into contact with the maintenance curve 2043, the piston head 301 is stationary and is in a position closest to the axis of the input shaft 2021.
An intake pipe 8 and an exhaust pipe 10, which are connected to the inside of the cylinder 6 in a penetrating manner, are provided on the end face of the cylinder 6 facing away from the pump housing 1.
The valve 9 is connected in series with the air inlet pipe 8, the check valve 11 is connected in series with the air outlet pipe 10, and all the air outlet pipes 10 are connected with the primary air outlet pipe 1201 in a penetrating way through an annular air outlet connecting pipe 12.
The valve 9 may be a check valve and may only be capable of supplying air into the cylinder 6 via the air intake pipe 8. However, in order to reduce the pressure of the intake air, in this embodiment, the valve 9 is a solenoid valve, and a sensor is provided inside the pump housing 1, the sensor controlling the opening and closing of the solenoid valve, and the sensor detecting a signal when the piston head 301 moves to a position closest to the axis of the maintenance curve 2043. After the sensor detects the signal, the control valve 9 is opened to pump air into the cylinder 6. The sensor can adopt a travel switch, is fixedly connected with the inner wall of the pump shell 1, and adopts the prior art in the mode of model and connection control with the valve 9.
When the piston head 301 collides with the sensor, the valve 9 is opened, and external air is pumped into the piston chamber under the action of pressure difference. The bulb 303 then contacts the maintenance curve 2043 and the piston head 301 is held stationary for a period of time while maintaining the pumping state, which ensures the amount of charge in the chamber until the pressure in the chamber is equal to the air pressure. The ball 303 then again contacts the cam curve, the piston head 301 moves in the direction of the exhaust pipe 10, the sensor loses signal and the valve 9 closes. When the pressure inside the piston chamber is greater than the check valve 11, the air inside the piston chamber is discharged into the exhaust pipe 10.
In order to increase the air suction effect, in this embodiment, the diameter of the air inlet pipe 8 is larger than the diameter of the air outlet pipe 10. Meanwhile, the cam curve includes an air extraction curve 2041 and an air exhaust curve 2042 which are sequentially connected, the air extraction curve 2041 has the same linear length as the air exhaust curve 2042, and the curvature of the air extraction curve 2041 is larger than that of the air exhaust curve 2042. When the ball 303 contacts the exhaust curve 2041, the piston chamber space is enlarged, and when the ball 303 contacts the exhaust curve 2042, the piston chamber space is reduced. The line length of the air extraction curve 2041 is the same as that of the air discharge curve 2042, the same stroke of the piston head 301 is guaranteed, the curvature of the air extraction curve 2041 is larger than that of the air discharge curve 2042, the moving speed of the piston head 301 during air extraction is larger than that during air discharge, the suction force is increased, and the air suction efficiency is improved.
Maintaining curve 2043 also ensures pumping time, further improves pumping efficiency, and ensures that the internal pressure of the piston chamber reaches ambient pressure and fills up before the next exhaust stroke.
In order to install the ball 303 into the annular groove 204, the driving device 2 includes an upper turntable 202 and a lower turntable 201 sequentially disposed up and down, and the upper turntable 202 is connected with the lower turntable 201 through bolts.
The upper end face of the lower turntable 201 is internally concave, the lower end of the upper turntable 202 is internally concave, the radian of the radial section of the two annular grooves is more than or equal to 95 degrees and less than 180 degrees, the two grooves are buckled to form an annular groove 204, and an opening is formed in one side of the annular groove 204, which is away from the axis of the driving device 2.
An input shaft 2021 is fixedly connected vertically above the upper turntable 202, and the axis of the input shaft 2021 coincides with the axis of the maintenance curve 2043. An output shaft 2011 is arranged below the lower turntable 201 in a protruding mode, and the axis of the output shaft 2011 is coincident with the axis of the input shaft 2021.
The bottom surface of the lower pump housing 101 is provided with a lower through hole 1012, and the output shaft 2011 is sleeved with a rotating bearing and inserted into the lower through hole 1012.
When the driving device 2 rotates, if it contacts with the inner wall of the pump housing 1, frictional resistance is additionally generated, and if it does not contact with the pump housing 1, the driving device 2 lacks support, and during rotation, offset may occur, which may cause abrasion of the input shaft 2021 for a long period of time.
In order to solve the above-mentioned technical problem, in this embodiment, an annular supporting ring 5 is disposed at the upper and lower ends of the driving device 2. The supporting ring 5 comprises a lower supporting ring 501, balls 502 and an upper fixing ring 503, a plurality of semicircular grooves 5011 are concavely arranged on the end face of the lower supporting ring 501, and the balls 502 are rotatably arranged in the semicircular grooves 5011. The upper fixing ring 503 is provided with a plurality of first through holes 5031, the upper fixing ring 503 is fixedly connected with the lower supporting ring 501 through bolts, and a part of the balls 502 passes through the first through holes 5031 and leaks to the outside of the upper fixing ring 503. The first through hole 5031 has a truncated cone-shaped cross section, so that the balls 502 can be prevented from being separated. The lower support ring 501 is fixedly connected with the inner wall of the pump casing 1, and the balls 502 are abutted against the upper end face and the lower end face of the driving device 2.
The two supporting rings 5 clamp the driving device 2 in the middle, play a role of supporting and limiting, and can freely rotate through the balls 502, and reduce friction resistance when the driving device 2 rotates.
In order to reduce the weight of the piston 3, the piston head 301 is hollow and open towards one end of the ball head 303. A plurality of piston ring grooves 3011 are concavely arranged on the outer circular shaft surface of the piston head 301, and at least 3 piston rings 4 are sleeved in the piston ring grooves 3011. The piston rings 4 increase the tightness of the piston chamber.
To increase the strength of the connection of the connecting rod 302 to the piston head 301, the connecting rod 302 is connected to the inner wall of the chamber of the piston head 301 by a plurality of reinforcing ribs 3021 arranged crosswise to the connecting rod 302. The piston head 301 generates heat during use, and if the heat cannot be timely discharged, the temperature inside the piston chamber is increased, so that the air capacity inside the piston chamber is reduced, and for this reason, a plurality of annular first cooling fins 3012 are arranged in the inner wall of the chamber of the piston head 301 in this embodiment.
The two ends of the air cylinder 6 are arranged in an open way, one end of the air cylinder is buckled with the lower connecting semicircular groove 1011 and the upper connecting semicircular groove 1021 in the pump shell 1 to form a circular pipe through connection, the air cylinder 6 is fixedly connected with the pump shell 1 through bolts, and sealing glue is smeared or a sealing gasket is placed at the connection part. The other end open mask is provided with a panel 601, the contact surface of the panel 601 and the air cylinder 6 is provided with sealant, and the panel 601 and the air cylinder 6 are fixedly connected through bolts.
The intake pipe 8 and the exhaust pipe 10 are fixedly connected to the panel 601 and are connected to the piston chamber.
An annular boss 608 is convexly arranged on the inner side of one end, connected with the pump shell 1, of the air cylinder 6, a ceramic cylinder sleeve 7 is clamped between the annular boss 608 and the panel 601, and the piston head 301 is arranged inside the ceramic cylinder sleeve 7 in a sliding mode. The ceramic cylinder sleeve 7 can increase the wear resistance and avoid cylinder pulling.
An annular heat dissipation cavity 603 is arranged in the inner wall of the cylinder 6, and a plurality of second through holes 604 are formed in the end face, facing the ceramic cylinder sleeve 7, of the heat dissipation cavity 603.
The bottom surface of the cylinder 6 is provided with an inlet 605 which is communicated with the heat dissipation cavity 603, and the top surface of the cylinder 6 is provided with an outlet 606 which is communicated with the heat dissipation cavity 603. Cooling water can be injected into the heat dissipation cavity 603 for forced cooling, and natural cooling can be adopted through air flow. Forced cooling or natural cooling, the cooling medium enters from the inlet 605 and then exits from the outlet 606, and the inlet 605 and the outlet 606 are positioned on two opposite angles.
In this embodiment, the diameter of the inlet 605 is larger than that of the outlet 606, and the shape of the outlet 606 is a truncated cone. With natural cooling, air enters from the inlet 605 and is discharged from the outlet 606 after being heated, and the diameter of the outlet 606 is narrow and wide at the bottom, so that the chimney effect is easy to travel, the air flow rate is increased, and the cooling effect is further improved. In order to further improve the cooling effect, a plurality of second cooling fins 602 are provided on the outer wall of the cylinder 6.
In order to further reduce the abrasion to the ceramic cylinder sleeve 7 when the piston head 301 moves, the bottom outer side of the lower turntable 201 is sleeved with a toothed ring 203 fixedly connected with the lower turntable, and the tooth surface of the toothed ring 203 is upwards arranged. A gear 304 is coaxially fixed on the connecting rod 302, and the gear 304 is meshed with the toothed ring 203. Thus, as the piston head 301 moves back and forth, rotation occurs, further reducing the probability of wear.
In this embodiment, at least three cylinders 6 are disposed, and simultaneously, through the arrangement of the pumping curve 2041, the exhausting curve 2042 and the maintaining curve 2043 on the annular groove 204, one cylinder 6 exhausts outwards at any moment, so that the gas exhausted by the primary exhaust pipe 1201 is consistent and stable in pressure.
In this embodiment, the third air ring 1503 is connected to the large end of the inner cavity of the booster pump casing 15, and the first air ring 1501 is connected to the small end of the inner cavity of the booster pump casing 15. A second air ring 1502 is arranged between the first air ring 1501 and the third air ring 1503 in the booster pump shell 15, and the second air ring 1502 is connected with the inner cavity of the booster pump shell 15 through a plurality of second through holes 15021.
An intermediate exhaust pipe 21 connected to the second air ring 1502 is provided outside the booster pump casing 15, and an electrically controlled shutoff valve is provided in the intermediate exhaust pipe 21.
The gas exhausted from the primary exhaust pipe 1201 is primary high pressure gas.
The corresponding electrically controlled stop valve is opened, the first-stage high-pressure air discharged from the first-stage exhaust pipe 1201 flows into the booster pump housing 15 through the air inlet branch pipe 22, and then is conveyed to the lower end through the rotating spiral plate 1601, and the horizontal cross section size of the inner cavity of the booster pump housing 15 is gradually reduced, that is, the internal space assembly of the spiral plate 1601 is reduced, so that the air pressure is gradually increased. The corresponding electric control stop valve is opened and closed, the second-level high-pressure air is discharged through the middle exhaust pipe 21, and the third-level high-pressure air is discharged through the second-level exhaust pipe 20.
The pressure of the third-level high-pressure air is larger than that of the second-level high-pressure air, and the pressure of the second-level high-pressure air is larger than that of the first-level high-pressure air. The rotating spiral plate 1601 is matched with the inner cavity of the booster pump shell 15 to gradually pressurize the high-pressure air, so that the high-pressure air with different pressures is obtained, and the air is pressurized in multiple stages.
In order to reduce the power consumption of the drive mechanism 13, the primary booster pump may be disconnected from the intermediate shaft 16 when the primary exhaust pipe 1201 is only required to exhaust without the need for multiple stages of pressurization. To achieve this function, an upper linkage gear 2012 is fixed at the end of the output shaft 2011 in this embodiment, a lower linkage gear 1602 is fixed at the top of the intermediate shaft 16, and a sliding sleeve 18 is sleeved on the outer parts of the upper linkage gear 2012 and the lower linkage gear 1602.
The sliding sleeve 18 is internally provided with a tooth surface and a smooth surface, the smooth surface is positioned above the tooth surface, the tooth surface is higher than the lower linkage gear 1602, the smooth surface is higher than the upper linkage gear 2012, and the tooth surface can be simultaneously meshed and connected with the upper linkage gear 2012 and the lower linkage gear 1602 by sliding the sliding sleeve 18 up and down; or the tooth surface is meshed with the lower linkage gear 1602, and the smooth surface is sleeved outside the upper linkage gear 2012.
When the tooth surface is simultaneously engaged with the upper linking gear 2012 and the lower linking gear 1602, the upper linking gear 2012 drives the lower linking gear 1602 to rotate, and when the tooth surface is engaged with the lower linking gear 1602, the smooth surface is sleeved outside the upper linking gear 2012, and the upper linking gear 2012 cannot rotate to drive the lower linking gear 1602.
The outside of the sliding sleeve 18 is provided with an upper snap ring and a lower snap ring, a swivel 19 is clamped between the two snap rings, a spring 1702 is arranged above the swivel 19, the spring 1702 is sleeved outside the sliding sleeve 18, and the upper end and the lower end of the spring 1702 are respectively abutted against the bottom surface of the pump shell 1 and the top surface of the swivel 19.
Under the pushing of the spring 1702, the tooth surface of the sliding sleeve 18 is meshed with the lower linkage gear 1602, and the smooth surface is sleeved outside the upper linkage gear 2012.
The sliding sleeve 18, the swivel 19 and the spring 1702 are sleeved with the housing 17, the housing 17 is provided with an air inlet hole 1701 at a position below the swivel 19, the air inlet hole 1701 is externally and penetratingly connected with the control air branch pipe 23, and the control air branch pipe 23 is penetratingly connected with the air inlet branch pipe 22. The circular shaft surface of the sliding sleeve 18 is abutted with the inner wall of the housing 17.
The control air branch pipe 23 is positioned on the pipeline between the electric control stop valve on the air branch pipe 22 and the third air ring 1503 at the through connection position of the air branch pipe 22.
Linkage is achieved by controlling the arrangement of the air branch pipes 23. When the spiral plate 1601 is required to perform multistage pressurization, an electric control stop valve on the air inlet branch pipe 22 is opened, primary high-pressure air flows into the air inlet branch pipe 22 and the primary control air branch pipe 23, primary high-pressure air in the control air branch pipe 23 flows into the housing 17 through the air inlet 1701, and then the sliding sleeve 18 is pushed upwards to move upwards by the thrust of the spring 1702, so that the tooth surface of the sliding sleeve 18 is simultaneously meshed and connected with the upper linkage gear 2012 and the lower linkage gear 1602.
When multi-stage pressurization is not needed, the electric control stop valve on the air inlet branch pipe 22 is closed, and the intermediate shaft 16 rotates at the moment, so that the back pressure of the downward movement of the swivel 19 is reduced. Under the thrust of the spring 1702, the slide sleeve 18 moves downward, and the high-pressure air under the swivel 19 is pushed into the intake manifold 22 again, and then flows into the pump chamber of the booster pump housing 15. After the swivel 19 moves down to the low point, the tooth surface of the sliding sleeve 18 is engaged with the lower linkage gear 1602, and the smooth surface is sleeved outside the upper linkage gear 2012. The upper linking gear 2012 is disconnected from the lower linking gear 1602.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (10)
1. The multistage pressurized air pump for the vehicle is characterized in that:
comprises a primary booster pump and a driving mechanism (13), wherein an output shaft of the driving mechanism (13) drives the primary booster pump to work,
one end of the primary booster pump, which is away from the driving mechanism (13), is provided with a booster pump shell (15), an intermediate shaft (16) is coaxially arranged in the inner cavity of the booster pump shell (15) in a rotating way, the end part of the intermediate shaft (16) is connected with the output shaft of the driving mechanism (13) through the primary booster pump, a spiral plate (1601) is sleeved on the intermediate shaft (16), the cross section of the inner cavity of the booster pump shell (15) is funnel-shaped, the end face of the spiral plate (1601) is abutted with the inner cavity wall of the booster pump shell (15),
a first-stage exhaust pipe (1201) is connected outside the exhaust port of the first-stage booster pump in a penetrating way,
a first gas ring (1501) and a third gas ring (1503) are sleeved outside the inner cavity of the booster pump shell (15), the first gas ring (1501) is communicated with the inner cavity of the booster pump shell (15) through a plurality of first through holes (15011), the third gas ring (1503) is communicated with the inner cavity of the booster pump shell (15) through a plurality of third through holes (15031), the inner diameter of the communicated part between the inner cavity of the booster pump shell (15) and the third gas ring (1503) is larger than that of the communicated part between the inner cavity of the booster pump shell and the first gas ring (1501),
a second-stage exhaust pipe (20) communicated with the first gas ring (1501) and an air inlet branch pipe (22) communicated with the third gas ring (1503) are arranged outside the booster pump shell (15),
the air inlet branch pipe (22) is communicated with the primary exhaust pipe (1201),
the primary exhaust pipe (1201), the air inlet branch pipe (22) and the secondary exhaust pipe (20) are all provided with electric control stop valves.
2. The vehicular multi-stage pressurized air pump of claim 1, wherein:
the primary booster pump comprises a pump shell (1), a driving device (2), a piston (3), a cylinder (6), an air inlet pipe (8) and an exhaust pipe (10),
the driving device (2) is rotatably arranged in the pump shell (1), the upper end of the input shaft (2021) of the driving device (2) vertically penetrates through the outside of the pump shell (1), the driving mechanism (13) drives the input shaft (2021) to rotate,
an annular groove (204) is concaved inwards on the side surface of the driving device (2), the row line of the annular groove (204) comprises a plurality of maintaining curves (2043) which are arranged at intervals and concentric with equal diameters and cam curves which are convexly arranged between two adjacent maintaining curves (2043),
a plurality of air cylinders (6) are connected with the outer side of the pump shell (1) in a penetrating way, the axes of the air cylinders (6) are distributed along the radial direction of the maintenance curve (2043),
the piston (3) comprises a piston head (301), a connecting rod (302) and a ball head (303), wherein the piston head (301) and the ball head (303) are respectively connected with two ends of the connecting rod (302), the piston head (301) is arranged in the cylinder (6) in a sliding way, the ball head (303) is arranged in the annular groove (204) in a sliding way,
an air inlet pipe (8) and an air outlet pipe (10) which are communicated with the inside of the air cylinder (6) are arranged on the end surface of the air cylinder (6) which is away from the pump shell (1),
the air inlet pipe (8) is connected with a valve (9) in series, the air outlet pipe (10) is connected with a one-way valve (11) in series, all the air outlet pipes (10) are connected with the primary air outlet pipe (1201) in a penetrating way,
one end of the driving device (2) deviating from the input shaft (2021) is provided with an output shaft (2011), the output shaft (2011) penetrates through the outside of the pump shell (1), and the tail end of the output shaft (2011) is connected with the intermediate shaft (16).
3. The vehicular multi-stage pressurized air pump according to claim 2, wherein:
the driving device (2) comprises an upper rotary table (202) and a lower rotary table (201) which are sequentially arranged up and down, the upper rotary table (202) is connected with the lower rotary table (201) through bolts,
the upper end surface of the lower rotary table (201) is internally concave with a groove, the cotton at the lower end of the upper rotary table (202) is internally concave with a groove, the radian of the radial section of the two annular grooves is more than or equal to 95 degrees and less than 180 degrees, the two grooves are buckled with each other to form an annular groove (204), one side of the annular groove (204) back to the axis of the driving device (2) is provided with an opening,
an input shaft (2021) is vertically and fixedly connected above the upper rotary table (202), the axis of the input shaft (2021) is coincident with the axis of the maintenance curve (2043),
an output shaft (2011) is arranged below the lower rotary table (201), and the output shaft (2011) and the input shaft (2021) are coaxially arranged.
4. A vehicular multi-stage pressurized air pump as defined in claim 3, wherein:
a second gas ring (1502) is arranged inside the booster pump shell (15) and between the first gas ring (1501) and the third gas ring (1503), the second gas ring (1502) is communicated with the inner cavity of the booster pump shell (15) through a plurality of second through holes (15021),
an intermediate exhaust pipe (21) which is communicated with the second gas ring (1502) is arranged outside the booster pump shell (15), and an electric control stop valve is arranged on the intermediate exhaust pipe (21).
5. The vehicular multistage pressurized air pump according to claim 3 or 4, characterized in that:
an upper linkage gear (2012) is fixed at the tail end of the output shaft (2011),
a lower linkage gear (1602) is fixed at the top of the intermediate shaft (16),
the outer parts of the upper linkage gear (2012) and the lower linkage gear (1602) are sleeved with a sliding sleeve (18), the inside of the sliding sleeve (18) is provided with a tooth surface and a smooth surface, the smooth surface is positioned above the tooth surface, the height of the tooth surface is larger than that of the lower linkage gear (1602), the height of the smooth surface is larger than that of the upper linkage gear (2012),
the tooth surface is simultaneously connected with the upper linkage gear (2012) and the lower linkage gear (1602) in a meshed manner through the upper and lower sliding sleeve (18); or the tooth surface is meshed with the lower linkage gear (1602), the smooth surface is sleeved outside the upper linkage gear (2012),
an upper clamping ring and a lower clamping ring are arranged outside the sliding sleeve (18), a rotating ring (19) is clamped between the two clamping rings, a spring (1702) is arranged above the rotating ring (19), the spring (1702) is sleeved outside the sliding sleeve (18), the upper end and the lower end of the spring (1702) are respectively abutted against the bottom surface of the pump shell (1) and the top surface of the rotating ring (19),
the outer parts of the sliding sleeve (18), the swivel (19) and the spring (1702) are sleeved with a housing (17), an air inlet hole (1701) is arranged at the position of the housing (17) below the swivel (19), a control air branch pipe (23) is connected outside the air inlet hole (1701) in a penetrating way, the control air branch pipe (23) is connected with an air inlet branch pipe (22) in a penetrating way,
the control air branch pipe (23) is positioned on a pipeline between the electric control stop valve on the air inlet branch pipe (22) and the third air ring (1503) at the through connection part of the air inlet branch pipe (22).
6. The vehicular multistage pressurized air pump according to claim 5, wherein:
the cam curve comprises an air suction curve (2041) and an air discharge curve (2042) which are connected in sequence,
the pumping curve (2041) is the same as the exhaust curve (2042) in line length, and the curvature of the pumping curve (2041) is greater than the curvature of the exhaust curve (2042).
7. The vehicular multi-stage pressurized air pump according to claim 6, wherein:
the outer side of the bottom of the lower rotary table (201) is sleeved with a toothed ring (203) fixedly connected with the lower rotary table, the tooth surface of the toothed ring (203) is upwards arranged,
the connecting rod (302) is coaxially fixed with a gear (304), and the gear (304) is meshed with the toothed ring (203).
8. The vehicular multistage pressurized air pump according to claim 6 or 7, characterized in that:
the two ends of the air cylinder (6) are arranged in an open way, one end of the air cylinder is in through connection with the pump shell (1), the other end of the air cylinder is provided with a panel (601) in an open mask way, the air inlet pipe (8) and the air outlet pipe (10) are fixedly connected with the panel (601),
an annular boss (608) is convexly arranged on the inner side of one end, connected with the pump shell (1), of the air cylinder (6), a ceramic cylinder sleeve (7) is clamped between the annular boss (608) and the panel (601), and the piston head (301) is arranged inside the ceramic cylinder sleeve (7) in a sliding mode.
9. The vehicular multi-stage pressurized air pump of claim 8, wherein:
an annular heat dissipation cavity (603) is arranged in the inner wall of the air cylinder (6), a plurality of second through holes (604) are arranged on the end face of the heat dissipation cavity (603) facing the ceramic cylinder sleeve (7),
the bottom surface of the air cylinder (6) is provided with an inlet (605) which is communicated with the heat dissipation cavity (603), and the top surface of the air cylinder (6) is provided with an outlet (606) which is communicated with the heat dissipation cavity (603).
10. The vehicular multi-stage pressurized air pump of claim 9, wherein:
the diameter of the inlet (605) is larger than that of the outlet (606), and the shape of the outlet (606) is a truncated cone.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013263.5A CN115977912B (en) | 2023-01-05 | 2023-01-05 | Multistage supercharging air pump for vehicle |
| CN202311297933.7A CN117287385A (en) | 2023-01-05 | 2023-01-05 | Air pump supercharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013263.5A CN115977912B (en) | 2023-01-05 | 2023-01-05 | Multistage supercharging air pump for vehicle |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311297933.7A Division CN117287385A (en) | 2023-01-05 | 2023-01-05 | Air pump supercharging device |
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| Publication Number | Publication Date |
|---|---|
| CN115977912A CN115977912A (en) | 2023-04-18 |
| CN115977912B true CN115977912B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311297933.7A Pending CN117287385A (en) | 2023-01-05 | 2023-01-05 | Air pump supercharging device |
| CN202310013263.5A Active CN115977912B (en) | 2023-01-05 | 2023-01-05 | Multistage supercharging air pump for vehicle |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311297933.7A Pending CN117287385A (en) | 2023-01-05 | 2023-01-05 | Air pump supercharging device |
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| CN116906293B (en) * | 2023-08-14 | 2024-02-09 | 福建德尔科技股份有限公司 | Automatic pressurizing system for preparing electronic grade chlorine trifluoride |
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| CN103233876A (en) * | 2013-04-09 | 2013-08-07 | 北京康斯特仪表科技股份有限公司 | Foldback coaxial gas booster pump and gas pressure creating method |
| CN203835655U (en) * | 2014-04-23 | 2014-09-17 | 南通广兴气动设备有限公司 | Three-level semi-high-pressure inflating pump |
| CN205876644U (en) * | 2016-07-22 | 2017-01-11 | 北京康斯特仪表科技股份有限公司 | Electronic air pump of cylinder body miniature booster -type of direction |
| CN107642478A (en) * | 2016-07-22 | 2018-01-30 | 北京康斯特仪表科技股份有限公司 | A kind of cylinder body guide miniature booster-type electric air pump |
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| CN113606109A (en) * | 2021-08-10 | 2021-11-05 | 南通广兴气动设备有限公司 | Three-stage high-pressure pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576133A (en) * | 2020-11-30 | 2022-06-03 | 福迪威（上海）工业仪器技术研发有限公司 | Multi-stage electric air pump |
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2023
- 2023-01-05 CN CN202311297933.7A patent/CN117287385A/en active Pending
- 2023-01-05 CN CN202310013263.5A patent/CN115977912B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233876A (en) * | 2013-04-09 | 2013-08-07 | 北京康斯特仪表科技股份有限公司 | Foldback coaxial gas booster pump and gas pressure creating method |
| CN203835655U (en) * | 2014-04-23 | 2014-09-17 | 南通广兴气动设备有限公司 | Three-level semi-high-pressure inflating pump |
| CN205876644U (en) * | 2016-07-22 | 2017-01-11 | 北京康斯特仪表科技股份有限公司 | Electronic air pump of cylinder body miniature booster -type of direction |
| CN107642478A (en) * | 2016-07-22 | 2018-01-30 | 北京康斯特仪表科技股份有限公司 | A kind of cylinder body guide miniature booster-type electric air pump |
| CN209293982U (en) * | 2018-10-27 | 2019-08-23 | 上海国一液压气动有限公司 | A kind of cold air two-stage supercharging pump |
| CN113606109A (en) * | 2021-08-10 | 2021-11-05 | 南通广兴气动设备有限公司 | Three-stage high-pressure pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115977912A (en) | 2023-04-18 |
| CN117287385A (en) | 2023-12-26 |
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