CN108119346B - Low noise air pump - Google Patents
Low noise air pump Download PDFInfo
- Publication number
- CN108119346B CN108119346B CN201711377155.7A CN201711377155A CN108119346B CN 108119346 B CN108119346 B CN 108119346B CN 201711377155 A CN201711377155 A CN 201711377155A CN 108119346 B CN108119346 B CN 108119346B
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- Prior art keywords
- air
- pump
- chamber
- cover
- motor
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- 230000003139 buffering effect Effects 0.000 claims abstract description 9
- 239000010985 leather Substances 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 21
- 238000007906 compression Methods 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 230000009467 reduction Effects 0.000 abstract description 10
- 230000006872 improvement Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000036651 mood Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/047—Pumps having electric drive
-
- 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
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
Abstract
The invention discloses a low-noise air pump; the air pump comprises an air pump body, an air flow buffer device and an air pump cover, wherein the air pump body comprises the air pump cover, an air discharge chamber is formed on the lower bottom surface of the air pump cover, and the air outlet head is arranged on the upper end surface of the air pump cover; the airflow buffering device comprises a buffering cover; the buffer cover is sealed on the upper end face of the pump head cover; the upper end surface of the buffer cover is provided with a via hole which is suitable for the air outlet head to pass through; an airflow buffer chamber is formed on the lower bottom surface of the buffer cover; the upper end face of the pump head cover is provided with a gas flow hole which enables the gas discharge chamber to be communicated with the gas flow buffer chamber. The effect is as follows: the air in the air flow buffer chamber flows back to the air leakage chamber, and then flows out through the air outlet head, so that the air flow stroke can be greatly increased, the noise can be further reduced, and the noise reduction effect is good.
Description
Technical Field
The invention relates to the technical field of pump bodies, in particular to a low-noise air pump.
Background
Air pump (qim), air pump, "a device that removes air from an enclosed space or adds air from an enclosed space.
The air pump is mainly divided into an electric air pump, a manual air pump and a foot-operated air pump. The electric air pump is an air pump taking electric power as power, and generates air pressure by continuously compressing air through the electric power, is mainly applied to pneumatic gluing, automobile inflation and the like, and is more commonly applied relative to a manual air pump and a foot air pump.
The electric air pump commonly used in the prior art, such as an electric air pump for a breast pump, is more commonly applied, but has larger noise at the air outlet or the air outlet head of the air pump cover when the electric air pump is particularly used, especially when air flows out, so that noise pollution is formed, the service life of the corresponding electric air pump is influenced, and the mood of a user is influenced.
Thus, the prior art is in need of improvement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the low-noise air pump.
The technical scheme adopted for solving the problems in the prior art is as follows: the low-noise air pump comprises an air pump body, wherein the air pump body comprises a pump head cover, an air discharging chamber is formed on the lower bottom surface of the pump head cover, an air outlet head is vertically arranged in the middle of the upper end surface of the pump head cover, and the low-noise air pump further comprises an air flow buffer device;
wherein the airflow buffering device comprises a buffering cover; the buffer cover is sealed and covered on the upper end face of the pump head cover; a through hole which is suitable for the air outlet head to pass through is formed in the middle of the upper end surface of the buffer cover; an airflow buffer chamber is formed on the lower bottom surface of the buffer cover; and the upper end surface of the pump head cover is provided with a gas flow hole which enables the air leakage chamber and the air flow buffer chamber to be communicated.
The following further describes the above technical scheme:
preferably, the air flow buffer device further comprises a sealing ring; a circle of convex steps are arranged at the middle part of the lower bottom surface of the buffer cover in a downward protruding mode, and an air flow buffer chamber is formed between the inner wall of the convex steps and the middle part of the inner top surface of the buffer cover; the sealing ring is arranged between the pump head cover and the buffer cover and is sleeved and fixed outside the convex steps.
Preferably, the thickness of the sealing ring is slightly larger than the thickness of the convex steps.
Preferably, the periphery of the upper end surface of the buffer cover is provided with a plurality of screw holes A which are downward and uniform, and the upper end surface of the pump head cover is provided with a plurality of screw holes B which are downward and uniform and are opposite to the corresponding screw holes A; the buffer cover is fixed with the pump head cover into a whole through a long screw screwed into the screw hole A and the screw hole B opposite to the screw hole A.
Preferably, the air pump body further comprises:
a motor; a rotating shaft is arranged upwards at the top of the motor;
a motor base; the motor seat is fixed at the top of the motor, and a rotating shaft hole for the rotating shaft to pass through is formed in the middle of the inner top surface of the motor seat;
a diaphragm compression assembly; the diaphragm compression assembly is arranged at the top of the motor seat, an air inlet chamber is defined between the diaphragm compression assembly and the motor seat, and an air inlet head communicated with the air inlet chamber is arranged outside the motor seat;
an eccentric drive assembly; the eccentric driving assembly is arranged in the motor seat and is connected between the rotating shaft and the diaphragm compression assembly;
a pump head; the pump head is arranged at the top of the diaphragm compression assembly and is used for defining an expandable/compressible pump chamber with the diaphragm compression assembly; and the upper end face of the pump head is in sealing connection with the lower bottom face of the pump head cover.
Preferably, the diaphragm compression assembly comprises:
a diaphragm seat; the diaphragm seat is arranged on the motor seat, and the air inlet chamber is defined between the diaphragm seat and the motor seat;
a diaphragm; the diaphragm is arranged on the diaphragm seat, the diaphragm is provided with at least four leather cups which are sunken towards the direction of the motor seat, the at least four leather cups are uniformly distributed at intervals around the circumference of the rotating shaft, a pump chamber is defined between each leather cup and the pump head, the bottom wall of each leather cup is provided with a valve plate, and each valve plate allows air flow in the air inlet chamber to flow into the leather cup at the corresponding position;
the eccentric driving assembly is connected with the leather cup and is used for driving the leather cup to move under the driving of the motor so as to expand or compress the pump chamber.
Preferably, the eccentric drive assembly comprises:
an eccentric wheel; the eccentric wheel is arranged on the rotating shaft of the motor;
a swing frame; the periphery of the swinging frame is provided with at least four connecting parts which are circumferentially spaced around the rotating shaft and uniformly distributed; the at least four connecting parts are correspondingly connected with the at least four leather cups; each connecting part is provided with a communication hole for communicating the air inlet chamber and the pump chamber; at least four valve plates correspondingly close at least four communication holes, and open the communication holes at corresponding positions when the pressure difference between the air inlet chamber and the pump chamber is larger than a first preset value;
tilting and pretty; the tilt pretilt is connected between the eccentric wheel and the middle part of the swing frame.
Preferably, the pump head comprises:
a valve plate; the valve plate is arranged on the diaphragm, and at least four groups of exhaust holes opposite to the corresponding leather cup are formed in the upper end face of the valve plate; at least three exhaust holes are formed in each group, and a jack is formed in the middle of each group of exhaust holes downwards on the valve plate;
an umbrella valve; the umbrella-shaped valves are at least four, at least four umbrella-shaped valves are correspondingly inserted and fixed in at least four jacks so as to correspondingly seal at least four groups of exhaust holes, and when the pressure difference between the pump chamber and the air release chamber is larger than a second preset value, the exhaust holes at corresponding positions are opened so as to enable air flow in the pump chamber to flow to the air release chamber.
Preferably, at least four gas flow holes opposite to at least four groups of gas exhaust holes are formed in the upper end face of the pump head cover.
Preferably, a plurality of screw holes C which are opposite to the corresponding screw holes B are uniformly formed in the periphery of the upper end surface of the valve plate; the periphery of the upper end surface of the diaphragm seat is provided with a plurality of screw holes D which are opposite to the corresponding screw holes C; the periphery of the upper end surface of the motor seat is provided with a plurality of screw holes E which are opposite to the corresponding screw holes D in position; the buffer cover is fixed with the motor seat into a whole through the long screws screwed into the screw hole A, the screw hole B, the screw hole C, the screw hole D and the screw hole E which are opposite to the screw hole A;
the upper end face of the motor is provided with a positioning hole and a screw hole F downwards; the lower bottom surface of the motor seat is fixedly provided with a positioning pin which is integrally formed with the motor seat and is suitable for being inserted into the positioning hole; the inner bottom surface of the motor seat is fixedly provided with a locking bolt which is suitable for being screwed into the screw hole F; when the positioning pin is inserted into the positioning hole and the locking bolt is screwed into the screw hole F, the motor seat and the motor are fixed into a whole.
The beneficial effects of the invention are as follows:
firstly, the low-noise air pump provided by the invention is additionally provided with the air flow buffer device with a secondary noise reduction function on the basis of a traditional air pump in a specific implementation, and an air flow buffer chamber is formed on the lower bottom surface of a buffer cover of the air flow buffer device; the invention further discloses a noise reduction device, which comprises a pump head cover, a gas flow through hole and a gas flow buffer device, wherein the gas flow through hole is arranged on the upper end face of the pump head cover, the gas flow through hole is used for leading a gas in the gas flow buffer device to flow through the gas flow through hole, the gas flow through hole is used for leading the gas in the gas flow buffer device to flow out of the gas flow buffer device, and the gas flow through hole is used for leading the gas in the gas flow buffer device to flow out of the gas flow buffer device.
Drawings
FIG. 1 is a schematic view of the overall structure of a low noise air pump of the present invention;
FIG. 2 is an exploded view of the air flow damper and the air pump body;
FIG. 3 is an exploded view of the air flow damper and the air pump body;
FIG. 4 is an exploded view of the air pump body according to the embodiment of the present invention;
FIG. 5 is an exploded view of the air pump body according to the embodiment of the present invention;
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Reference numerals:
a low noise air pump 100;
air pump a body 10;
pump head cover 101;
a bleed chamber 1011; an outlet head 1012; a gas flow hole 1013; screw hole B1014;
a motor 102;
a rotation shaft 1021; positioning holes 1022; screw hole F1023; a fixed mounting block 1024;
a motor base 103;
a rotation shaft hole 1031; an intake chamber 1032; an air inlet head 1033; screw hole E1034; a positioning pin 1035; a lock bolt 1036;
a diaphragm compression assembly 104;
a septum housing 1041; screw hole D10411; a diaphragm 1042; leather cup 10421; a valve plate 10422;
an eccentric drive assembly 105;
eccentric 1051; a swing frame 1052; a connection portion 1053; communication hole 10531; tilting pretty 1054; a pump head 106;
a valve plate 1061; an exhaust hole 10611; jack 10612; screw hole C10613; umbrella valve 1062;
a pump chamber 107;
an air flow buffer device 20;
buffer cover 201;
a via 2011; air flow buffering a chamber 2012; a convex step 2013; screw hole a2014;
a seal ring 202;
Detailed Description
The following detailed description of the present invention will be given with reference to the accompanying drawings and specific embodiments, so as to more clearly and intuitively understand the essence of the present invention.
As shown in connection with fig. 1, 2, 3, 4 and 5;
the low-noise air pump 100 provided by the invention comprises an air pump body 10, wherein the air pump body 10 comprises a pump head cover 101, an air leakage chamber 1011 is formed on the lower bottom surface of the pump head cover 101, and an air outlet head 1012 is vertically arranged in the middle of the upper end surface of the pump head cover 101.
The improvement of the invention is that the invention also comprises an airflow buffering device 20;
wherein the air flow buffer device 20 comprises a buffer cover 201; the buffer cover 201 is sealed and arranged on the upper end surface of the pump head cover 101; a via 2011 adapted to the gas outlet head 1012 to pass through is formed in the middle of the upper end surface of the buffer cover 201; an airflow buffer chamber 2012 is formed on the bottom surface of the buffer cover 201; the pump head cover 101 has an upper end surface provided with a gas flow hole 1013 for allowing the vent chamber 1011 to communicate with the gas flow buffer chamber 2012.
Based on the foregoing, it can be appreciated that, in the embodiment of the low-noise air pump 100 provided by the present invention, the air flow buffer device 20 with the function of two-stage noise reduction is added on the basis of the conventional air pump, and an air flow buffer chamber 2012 is formed on the bottom surface of the buffer cover 201 of the air flow buffer device 20; the pump head cover 101 has an air flow hole 1013 formed in an upper end surface thereof so that the air release chamber 1011 in a lower surface of the pump head cover 101 and the air flow buffer chamber 2012 in a lower surface of the buffer cover 201 of the air flow buffer device 20 are communicated.
Thus, in using the present invention:
on the one hand, a part of the gas in the air release chamber 1011 is discharged through the air outlet head 1012 on the upper end surface of the pump head cover 101, and the other part is discharged to the air flow buffer chamber 2012 through the gas flow hole 1013, so that the instant impact force of the gas discharged from the air outlet head 1012 can be effectively slowed down, and then the noise caused by the impact force of the gas flowing out of the air outlet head 1012 can be effectively reduced, so that the secondary noise reduction effect is achieved.
On the other hand, after the air in the air flow buffer chamber 2012 is fully stored, the air flows back to the air outlet chamber 1011 through the air flowing hole 1013, so that the air in the air outlet chamber 1011 can be resisted from flowing out towards the air outlet head 1012 from the reverse direction, the instant impact force of the air discharged from the air outlet head 1012 can be further slowed down, and the noise caused by the air flowing out impact force at the air outlet head 1012 can be further reduced.
In addition, when the gas in the gas flow buffer chamber 2012 flows back to the gas release chamber 1011 and flows out through the gas outlet head 1012, the gas outflow stroke can be greatly increased, so that the instant impact force of the gas discharged from the gas outlet head 1012 can be further slowed down, and the noise caused by the gas outflow impact force at the gas outlet head 1012 can be further reduced.
Furthermore, the invention has good noise reduction effect, can greatly reduce noise pollution, does not influence the service life of the invention, and has good use effect.
It should be noted that, in this embodiment, the airflow buffering device 20 further includes a sealing ring 202; a circle of convex steps 2013 are arranged at the middle part of the lower bottom surface of the buffer cover 201 in a protruding way, and an air flow buffer chamber 2012 is formed between the inner wall of the convex steps 2013 and the middle part of the inner top surface of the buffer cover 201; the seal ring 202 is disposed between the pump head cover 101 and the buffer cover 201, and is sleeved and fixed outside the convex step 2013.
Preferably, the thickness of the seal ring 202 is slightly greater than the thickness of the step 2013.
In addition, in the implementation, a sealing ring 202 is also fixed around the via 2011 in the middle of the inner top surface of the buffer cover 201.
Thus, the air flow buffer chamber 2012 has good tightness and good air leakage prevention effect.
It should be emphasized that, in the implementation, the periphery of the upper end surface of the buffer cover 201 is provided with a plurality of screw holes a2014 uniformly downward, and the upper end surface of the pump head cover 101 is provided with a plurality of screw holes B1014 opposite to the corresponding screw holes a2014 uniformly downward; the buffer cover 201 is fixed to the pump head cover 101 by a long screw screwed into the screw hole a2014 and the screw hole B1014 opposite thereto.
In this way, the fixing between the damper cap 201 and the pump head cap 101 is good, and the damper cap is not loosened.
And, in the specific implementation, the air pump body 10 of the present invention further includes:
a motor 102; a rotating shaft 1021 is arranged upwards at the top of the motor 102;
a motor base 103; the motor seat 103 is fixed on the top of the motor 102, and a rotation shaft hole 1031 is formed in the middle of the inner top surface of the motor seat 103 to enable the rotation shaft 1021 to pass through;
a diaphragm compression assembly 104; the diaphragm compression assembly 104 is disposed on top of the motor base 103, and defines an air inlet chamber 1032 with the motor base 103, and an air inlet head 1033 communicating with the air inlet chamber 1032 is disposed outside the motor base 103;
an eccentric drive assembly 105; the eccentric driving assembly 105 is arranged in the motor seat 103 and connected between the rotation shaft 1021 and the diaphragm compression assembly 104;
a pump head 106; the pump head 106 is disposed on top of the diaphragm compression assembly 104 and defines an expandable/compressible pump chamber 107 with the diaphragm compression assembly 104; and the upper end surface of the pump head 106 is in sealing connection with the lower bottom surface of the pump head cover 101.
In this manner, the present invention is used such that the inlet head 1033 is connected to a space to be evacuated.
When the motor 102 works, the motor 102 drives the eccentric driving assembly 105 to swing, and the eccentric driving assembly 105 drives the diaphragm compressing assembly 104 to move, so that the pump chamber 107 can be alternately expanded and compressed.
When the pump chamber 107 expands, the gas in the pumping space enters the air inlet chamber 1032 through the air inlet head 1033, and the gas in the air inlet chamber 1032 is sucked into the pump chamber 107; when the pump chamber 107 compresses, the gas in the pump chamber 107 is pushed out to the discharge chamber 1011 and discharged through the gas outlet head 1012 communicating with the discharge chamber 1011.
Thereby, the space to be pumped is vacuumized.
In this embodiment, the diaphragm compression assembly 104 includes:
a septum housing 1041; the diaphragm seat 1041 is disposed on the motor seat 103, and defines the intake chamber 1032 with the motor seat 103;
preferably, the motor seat 103 has a hollow structure, and when the diaphragm seat 1041 is disposed on the motor seat 103, the motor seat 103 having a hollow structure is covered, so that the inside of the motor seat 103 having a hollow structure is formed as the intake chamber 1032;
a diaphragm 1042; the diaphragm 1042 is disposed on the diaphragm seat 1041, and the diaphragm 1042 has at least four cups 10421 recessed toward the motor seat 103, at least four cups 10421 are uniformly disposed at intervals around the circumference of the rotation shaft 1021, each cup 10421 and the pump head 106 define a pump chamber 107 therebetween, a bottom wall of each cup 10421 is provided with a valve plate 10422, and each valve plate 10422 allows the airflow in the intake chamber 1032 to flow into the cup 10421 at a corresponding position;
in short, each of the valve plates 10422 allows only air flow from the intake chamber 1032 to the pump chamber 107 and does not allow air flow from the pump chamber 107 to the intake chamber 1032, i.e., it functions as a one-way exhaust valve.
Thus, when the pump chamber 107 expands, the gas in the pumping space enters the intake chamber 1032 through the gas inlet head 1033, the gas in the intake chamber 1032 is sucked into the pump chamber 107, and the gas in the pump chamber 107 cannot reversely flow into the intake chamber 1032; when the pump chamber 107 compresses, the gas in the pump chamber 107 is extruded to the air release chamber 1011 and then discharged through the air outlet head 1012 communicated with the air release chamber 1011, and does not flow into the air inlet chamber 1032 reversely, thus the invention has strong use reliability.
Preferably, the eccentric drive assembly 105 is coupled to the cup 10421 for driving the cup 10421 to expand or compress the pump chamber 107 under the drive of the motor 102.
And preferably, in this embodiment, the eccentric drive assembly 105 comprises:
eccentric 1051; the eccentric 1051 is mounted on the rotation shaft 1021 of the motor 102;
a swing frame 1052; the outer periphery of the swing frame 1052 is provided with at least four connecting parts 1053 which are circumferentially spaced around the rotation shaft 1021 and uniformly distributed; at least four of the connecting portions 1053 are correspondingly connected with at least four of the leather cups 10421; each of the connection portions 1053 has a communication hole 10531 that communicates the intake chamber 1032 with the pump chamber 107; at least four of the valve plates 10422 close at least four of the communication holes 10531, respectively, and open the communication holes 10531 at corresponding positions when the pressure difference between the intake chamber 1032 and the pump chamber 107 is greater than a first preset value;
tilting pretty 1054; the tilt angle 1054 is connected between the eccentric 1051 and the middle of the swing frame 1052.
In this embodiment, the pump head 106 includes:
a valve plate 1061; the valve plate 1061 is disposed on the diaphragm 1042, and at least four sets of exhaust holes 10611 with split exhaust flow and opposite to the corresponding leather cup 10421 are provided on the upper end surface of the valve plate 1061 to reduce noise; at least three exhaust holes 10611 are provided in each group, and a jack 10612 is provided in the middle of each group of exhaust holes 10611 and downward on the valve plate 1061;
umbrella valve 1062; at least four umbrella valves 1062 are provided, and at least four umbrella valves 1062 are correspondingly inserted into at least four insertion holes 10612, so as to correspondingly close at least four groups of exhaust holes 10611, and when the pressure difference between the pump chamber 107 and the air release chamber 1011 is greater than a second preset value, the exhaust holes 10611 at corresponding positions are opened, so that the air flow in the pump chamber 107 flows to the air release chamber 1011.
Based on the above, it can be clear that the steps for vacuumizing the space to be vacuumized by using the invention are as follows:
first, in using the present invention, the air inlet head 1033 is connected to a space to be evacuated.
Secondly, the motor 102 is started, so that the rotation shaft 1021 of the motor 102 drives the eccentric wheel 1051 to rotate, the eccentric wheel 1051 drives the inclined pretilt 1054 to rotate, and the inclined pretilt 1054 can drive the swinging frame 1052 to rotate and swing because of inclined arrangement, and then the swinging frame 1052 drives the leather cup 10421 to expand or compress;
when the cup 10421 moves to expand the pump chamber 107 inside, the gas in the pumping space enters the gas inlet chamber 1032 through the gas inlet head 1033, and when the pressure difference between the gas inlet chamber 1032 and the pump chamber 107 is greater than a first preset value, the valve plate 10422 is opened, and the gas in the gas inlet chamber 1032 is sucked into the pump chamber 107 through the communication hole 10531 on the connection portion 1053 and the valve plate 10422 in sequence;
when the cup 10421 moves to compress the internal pump chamber 107, the gas in the pump chamber 107 will impact the umbrella valve 1062, and when the pressure difference between the pump chamber 107 and the air release chamber 1011 is greater than the second preset value, the umbrella valve 1062 will open the air release hole 10611, so that the gas in the pump chamber 107 is extruded to the air release chamber 1011 through the air release hole 10611;
a part of the gas in the gas release chamber 1011 is discharged through the gas outlet head 1012 on the upper end surface of the pump head cover 101, and the other part is discharged to the gas flow buffer chamber 2012 through the gas flow hole 1013 to buffer the gas flow.
Finally, the gas fully stored in the gas flow buffer chamber 2012 continuously flows back to the gas release chamber 1011 and flows out through the gas outlet head 1012.
Thus, the space to be pumped is vacuumized.
In this process, on one hand, the connection portion 1053, the cup 10421 and the exhaust hole 10611 are respectively provided with at least four units, so that the vacuum pumping speed of the present invention is fast and the efficiency is high.
On the other hand, according to the present invention, based on the conventional air pump, the air flow buffer device 20 with the secondary noise reduction function is additionally provided, a part of the air in the air release chamber 1011 is discharged through the air outlet head 1012 on the upper end surface of the pump head cover 101, and the other part is discharged to the air flow buffer chamber 2012 through the air flow hole 1013, so that the instantaneous impact force of the air discharged from the air outlet head 1012 can be effectively reduced, and then the noise caused by the impact force of the air flowing out of the air outlet head 1012 can be effectively reduced, so that the secondary noise reduction effect is achieved.
In addition, after the air in the air flow buffer chamber 2012 is fully stored, the air flows back to the air outlet chamber 1011 through the air flowing hole 1013, so that the air in the air outlet chamber 1011 can be resisted from flowing out towards the air outlet head 1012 from the reverse direction, the instant impact force of the air discharged from the air outlet head 1012 can be further slowed down, and the noise caused by the air flowing out impact force at the air outlet head 1012 can be further reduced.
Meanwhile, when the gas in the gas flow buffer chamber 2012 flows back to the gas release chamber 1011 and flows out through the gas outlet head 1012, the gas outflow stroke can be greatly increased, so that the instant impact force of the gas discharged from the gas outlet head 1012 can be further slowed down, and the noise caused by the gas outflow impact force at the gas outlet head 1012 can be further reduced.
Furthermore, the invention has good noise reduction effect, can greatly reduce noise pollution generated by exhaust at the air outlet head 1012, does not influence the service life and the mood of a user, and has good use effect.
It should be noted that in the preferred embodiment, at least four gas flow holes 1013 are provided in the upper end surface of the pump head cover 101, which are located opposite to at least four groups of the gas discharge holes 10611.
Thus, the gas circulation speed is high, the gas backflow speed is high, so that the noise pollution can be reduced and the gas can be discharged timely and rapidly.
It should be further added that, in the preferred embodiment, the periphery of the upper end surface of the valve plate 1061 is uniformly provided with a plurality of screw holes C10613 opposite to the corresponding screw holes B1014; the periphery of the upper end surface of the diaphragm seat 1041 is provided with a plurality of screw holes D10411 which are opposite to the corresponding screw holes C10613; a plurality of screw holes E1034 opposite to the corresponding screw holes D10411 are uniformly formed downwards on the periphery of the upper end surface of the motor seat 103; the buffer cover 201 is fixed to the motor base 103 by screwing into the screw hole a2014 and the long screws in the screw hole B1014, the screw hole C10613, the screw hole D10411 and the screw hole E1034 opposite to the screw hole a2014;
a positioning hole 1022 and a screw hole F1023 are formed in the upper end surface of the motor 102 downwards; a positioning pin 1035 which is integrally formed with the motor seat 103 and is suitable for being inserted into the positioning hole 1022 is fixedly arranged on the lower bottom surface of the motor seat; the motor seat 103 is fixedly provided with a bottom surface suitable for a locking bolt 1036 screwed into the screw hole F1023; when the positioning pin 1035 is inserted into the positioning hole 1022 and the locking bolt 1036 is screwed into the screw hole F1023, the motor base 103 is fixed to the electric motor 102.
Therefore, the invention has good integrity, and is convenient to assemble and disassemble.
It should be further appreciated that in the preferred embodiment, the bottom of the motor 102 is provided with a fixed mounting bracket 1024 integrally formed therewith, and the fixed mounting bracket 1024 is provided with a fixed mounting hole to facilitate the overall fixing of the present invention.
Other embodiments, etc., are not illustrated herein.
In summary, the invention has the advantages of simple integral structure, easy implementation, easy operation, strong practicability, strong specificity, low manufacturing cost, good noise reduction effect and good use effect, and does not need to increase too much cost in the improvement of the structure and the improvement of the technology, so that the invention can be effectively popularized.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, and all changes in the equivalent structure or equivalent flow, or direct or indirect application in other related technical fields, are included in the scope of the invention.
Claims (9)
1. The low-noise air pump comprises an air pump body, wherein the air pump body comprises a pump head cover, an air discharging chamber is formed on the lower bottom surface of the pump head cover, an air discharging head is vertically arranged in the middle of the upper end surface of the pump head cover, and the low-noise air pump is characterized by further comprising an air flow buffer device;
wherein the airflow buffering device comprises a buffering cover; the buffer cover is sealed and covered on the upper end face of the pump head cover; a through hole which is suitable for the air outlet head to pass through is formed in the middle of the upper end surface of the buffer cover; an airflow buffer chamber is formed on the lower bottom surface of the buffer cover; the pump head cover is provided with a gas flow hole which is communicated with the gas leakage chamber and the gas flow buffer chamber;
the air flow buffer device also comprises a sealing ring; a circle of convex steps are arranged at the middle part of the lower bottom surface of the buffer cover in a downward protruding mode, and an air flow buffer chamber is formed between the inner wall of the convex steps and the middle part of the inner top surface of the buffer cover; the sealing ring is arranged between the pump head cover and the buffer cover and is sleeved and fixed outside the convex steps.
2. A low noise air pump according to claim 1, wherein the thickness of the sealing ring is slightly greater than the thickness of the convex step.
3. The low noise air pump according to any one of claims 1-2, wherein a plurality of screw holes a are uniformly formed in the periphery of the upper end surface of the buffer cover downward, and a plurality of screw holes B opposite to the corresponding screw holes a are uniformly formed in the upper end surface of the pump head cover downward; the buffer cover is fixed with the pump head cover into a whole through a long screw screwed into the screw hole A and the screw hole B opposite to the screw hole A.
4. A low noise air pump according to claim 3, wherein the air pump body further comprises:
a motor; a rotating shaft is arranged upwards at the top of the motor;
a motor base; the motor seat is fixed at the top of the motor, and a rotating shaft hole for the rotating shaft to pass through is formed in the middle of the inner top surface of the motor seat;
a diaphragm compression assembly; the diaphragm compression assembly is arranged at the top of the motor seat, an air inlet chamber is defined between the diaphragm compression assembly and the motor seat, and an air inlet head communicated with the air inlet chamber is arranged outside the motor seat;
an eccentric drive assembly; the eccentric driving assembly is arranged in the motor seat and is connected between the rotating shaft and the diaphragm compression assembly;
a pump head; the pump head is arranged at the top of the diaphragm compression assembly and is used for defining an expandable/compressible pump chamber with the diaphragm compression assembly; and the upper end face of the pump head is in sealing connection with the lower bottom face of the pump head cover.
5. The low noise air pump of claim 4, wherein the diaphragm compression assembly comprises:
a diaphragm seat; the diaphragm seat is arranged on the motor seat, and the air inlet chamber is defined between the diaphragm seat and the motor seat;
a diaphragm; the diaphragm is arranged on the diaphragm seat, the diaphragm is provided with at least four leather cups which are sunken towards the direction of the motor seat, the at least four leather cups are uniformly distributed at intervals around the circumference of the rotating shaft, a pump chamber is defined between each leather cup and the pump head, the bottom wall of each leather cup is provided with a valve plate, and each valve plate allows air flow in the air inlet chamber to flow into the leather cup at the corresponding position;
the eccentric driving assembly is connected with the leather cup and is used for driving the leather cup to move under the driving of the motor so as to expand or compress the pump chamber.
6. The low noise air pump of claim 5, wherein the eccentric drive assembly comprises:
eccentric center a wheel; the eccentric wheel is arranged on the rotating shaft of the motor;
a swing frame; the periphery of the swinging frame is provided with at least four connecting parts which are circumferentially spaced around the rotating shaft and uniformly distributed; the at least four connecting parts are correspondingly connected with the at least four leather cups; each connecting part is provided with a communication hole for communicating the air inlet chamber and the pump chamber; at least four valve plates correspondingly close at least four communication holes, and open the communication holes at corresponding positions when the pressure difference between the air inlet chamber and the pump chamber is larger than a first preset value;
tilting and pretty; the tilt pretilt is connected between the eccentric wheel and the middle part of the swing frame.
7. The low noise air pump of claim 6, wherein the pump head comprises:
a valve plate; the valve plate is arranged on the diaphragm, and at least four groups of exhaust holes opposite to the corresponding leather cup are formed in the upper end face of the valve plate; at least three exhaust holes are formed in each group, and a jack is formed in the middle of each group of exhaust holes downwards on the valve plate;
an umbrella valve; the umbrella-shaped valves are at least four, at least four umbrella-shaped valves are correspondingly inserted and fixed in at least four jacks so as to correspondingly seal at least four groups of exhaust holes, and when the pressure difference between the pump chamber and the air release chamber is larger than a second preset value, the exhaust holes at corresponding positions are opened so as to enable air flow in the pump chamber to flow to the air release chamber.
8. The low noise air pump according to claim 7, wherein an upper end surface of the pump head cover is provided with at least four of the air flow holes opposite to at least four of the exhaust holes.
9. The low noise air pump according to claim 8, wherein a plurality of screw holes C opposite to the corresponding screw holes B are uniformly formed in the periphery of the upper end surface of the valve plate; the periphery of the upper end surface of the diaphragm seat is provided with a plurality of screw holes D which are opposite to the corresponding screw holes C; the periphery of the upper end surface of the motor seat is provided with a plurality of screw holes E which are opposite to the corresponding screw holes D in position; the buffer cover is fixed with the motor seat into a whole through the long screws screwed into the screw hole A, the screw hole B, the screw hole C, the screw hole D and the screw hole E which are opposite to the screw hole A;
the upper end face of the motor is provided with a positioning hole and a screw hole F downwards; the lower bottom surface of the motor seat is fixedly provided with a positioning pin which is integrally formed with the motor seat and is suitable for being inserted into the positioning hole; the inner bottom surface of the motor seat is fixedly provided with a locking bolt which is suitable for being screwed into the screw hole F; when the positioning pin is inserted into the positioning hole and the locking bolt is screwed into the screw hole F, the motor seat and the motor are fixed into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711377155.7A CN108119346B (en) | 2017-12-19 | 2017-12-19 | Low noise air pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711377155.7A CN108119346B (en) | 2017-12-19 | 2017-12-19 | Low noise air pump |
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| CN108119346A CN108119346A (en) | 2018-06-05 |
| CN108119346B true CN108119346B (en) | 2024-02-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799052A (en) * | 2018-08-07 | 2018-11-13 | 珠海市司迈科技有限公司 | A kind of removable seal air pump |
| CN109707602A (en) * | 2019-02-19 | 2019-05-03 | 深圳市时光电子有限公司 | Diaphragm pump |
| CN112727737A (en) * | 2020-12-30 | 2021-04-30 | 厦门坤锦电子科技有限公司 | Noise reduction silencing cover for air pump and vertical eccentric rotary diaphragm pump |
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| CN108119346A (en) | 2018-06-05 |
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