CN212563599U

CN212563599U - Miniature vacuum air pump

Info

Publication number: CN212563599U
Application number: CN202021678460.7U
Authority: CN
Inventors: 李百峰
Original assignee: Shenzhen Longyi Science And Technology Co ltd
Current assignee: Shenzhen Longyi Science And Technology Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-02-19
Anticipated expiration: 2030-08-11

Abstract

The embodiment of the utility model provides a micro vacuum air pump, which comprises a driving piece; the gas collection assembly is driven by the driving piece and comprises a shell, one end of the shell, which is far away from the driving piece, is provided with a first gas outlet; the end cover is assembled outside one end of the shell, which is provided with the first air outlet hole, in a sealing way, and an air inlet nozzle which is communicated with the inner cavity of the shell of the air collection assembly in a sealing way is arranged on the end cover; the exhaust hole has been seted up on the shell, miniature vacuum air pump still includes that sealed cowling covers the first venthole on the shell and sets up the acoustic celotex board of second venthole and sealed cowling covers the second venthole on the acoustic celotex board and sets up the soundproof valve of third venthole, acoustic celotex board and soundproof valve all set up in the space between shell and the end cover and fall the room of making an uproar with the multistage that the space separation becomes to communicate in proper order, the room of making an uproar falls in multistage and is linked together with first venthole and admit air, be linked together the exhaust with the exhaust. The multistage chamber of making an uproar that falls prolongs air pump exhaust gas circuit, makes the air pump produce the noise reduction, cools down the driving piece simultaneously.

Description

Miniature vacuum air pump

Technical Field

The embodiment of the utility model provides a relate to air pump technical field, especially relate to a miniature vacuum air pump.

Background

The vacuum air pump is a device for evacuating the container to obtain a vacuum. Many small-size equipment are provided with miniature vacuum air pump and are used for the evacuation, for example breast pump etc. the miniature vacuum air pump on the existing market sends the noise great when using, seriously influences user's use experience.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem who solves provides a miniature vacuum air pump of noise that can reduce the during operation and produce.

In order to solve the technical problem, the embodiment of the utility model provides an adopt following technical scheme: a micro vacuum air pump comprising:

a drive member;

the gas collection assembly is butted with the driving piece and driven by the driving piece, and comprises a shell, one end of the shell, which is far away from the driving piece, is provided with a first gas outlet; and

the end cover is assembled outside one end of the shell, which is provided with the first air outlet hole, in a sealing way, and an air inlet nozzle which is communicated with the inner cavity of the shell of the air collection assembly in a sealing way is arranged on the end cover;

the exhaust hole has been seted up on the shell, miniature vacuum air pump still covers including the sealed cowling first venthole on the shell and the acoustic celotex board and the sealed cowling that set up the second venthole cover second venthole on the acoustic celotex board and the soundproof valve who sets up the third venthole, the acoustic celotex board reaches the soundproof valve all set up in the space between shell and the end cover and will the space separation becomes the one-level that communicates in proper order and falls the room of making an uproar, the second grade and fall the room of making an uproar and the tertiary room of making an uproar, wherein, the one-level fall the room of making an uproar still with first venthole is linked together, the.

Furthermore, the lateral margin of the acoustic celotex board bends and extends towards the protruding first lateral wall that forms of gas collecting component and has first predetermined height, first lateral wall end supports and presses on the shell, acoustic celotex board, first lateral wall and the shell enclose and form the one-level chamber of making an uproar that falls.

Furthermore, the sound insulation valve comprises a cylinder body and a valve plate assembled in the middle section of the cylinder body, two ends of the cylinder body are respectively pressed on the sound insulation plate and the end cover, and the cylinder body, the valve plate and the sound insulation plate are encircled to form the secondary noise reduction chamber; the cylinder, the valve plate and the end cover are encircled to form the secondary noise reduction chamber; and a fourth air outlet communicated with the inlet end of the exhaust channel is formed in the wall of the cylinder body between the valve plate and the end cover.

Furthermore, the third air outlet is arranged on the valve plate and is a normally closed air outlet which is communicated when the gas pressure at the gas inlet side exceeds a preset value.

Further, the acoustic celotex board orientation one side of soundproof valve is equipped with around the mounting groove that the second venthole set up, the corresponding end of barrel inserts in the mounting groove.

Furthermore, the end face of one end, butted with the driving part, of the shell is recessed towards the inner direction of the shell to form at least one cavity communicated with the outlet end of the exhaust channel, the cavity is matched with the end face, butted with the shell, of the butting end of the driving part to form a four-stage noise reduction chamber, and at least one exhaust hole is formed in the side wall of each cavity.

Further, the proportion of the projection area of the cavity on the end face of the butt joint end of the driving piece to the area of the end face of the butt joint end of the driving piece is not less than forty percent.

Furthermore, the exhaust passage comprises a main passage which is arranged in the side wall of the shell and is isolated from the inner cavity of the shell and a connecting section which is formed between the end cover and the sound insulation board and is in butt joint communication with the main passage, and the connecting section is used as the inlet end of the exhaust passage and is communicated with the three-stage noise reduction chamber.

Furthermore, the driving part and one end of the shell are assembled to form an output shaft, a shaft hole is formed in the middle of the end face of one end, butted with the driving part, of the shell, the output shaft of the driving part penetrates through the shaft hole to extend into the shell, and a shaft sealing element sleeved on the output shaft is further arranged in the shaft hole.

Furthermore, the gas collecting assembly comprises a bottom shell, a leather cup support and a valve plate which are sequentially butted to form the shell, the outer end of the bottom shell is butted with the driving part, a first gas outlet hole is formed in the valve plate, the gas collecting assembly further comprises an eccentric wheel which is arranged in the bottom shell and fixed on an output shaft of the driving part, a swinging frame which is obliquely inserted into one end of the eccentric wheel far away from the driving part and is provided with a plurality of driving cylinders, a diaphragm element which is assembled on the leather cup support and is provided with a plurality of leather cups, and an umbrella T which is inserted into the first gas outlet hole in the valve plate and is matched with the leather cups, the driving cylinders of the swinging frame are correspondingly inserted into one ends of the leather cups of the diaphragm element one by one, the parts of the valve plate, which face towards the swinging frame and correspond to the leather cups, are inclined planes, and each inclined plane is provided with the first gas outlet hole, each inclined surface is parallel to the end surface of the leather cup when the corresponding leather cup is driven by the driving cylinder of the swing frame to move to the maximum stroke in the valve plate direction.

Adopt above-mentioned technical scheme, the embodiment of the utility model provides a following beneficial effect has at least: the embodiment of the utility model provides a separate into a plurality of rooms of making an uproar of falling through setting up the space between acoustic celotex board and the soundproof valve with shell and end cover inner wall, the room of making an uproar falls in the one-level that forms between at least acoustic celotex board and the shell, the room and end cover inner wall and acoustic celotex board fall in the second grade that form between acoustic celotex board and the soundproof valve, the room of making an uproar falls in the third grade that forms between acoustic celotex board and the soundproof valve, the room is fallen in the second grade, just discharge through the exhaust hole after the room is fallen in the third grade, the exhaust structure of air pump has effectively been improved, the extension exhaust gas circuit, the noise that makes the air pump during operation produce reduces, and simultaneously, it has still compressed the space between shell and the end cover inner wall.

Drawings

Fig. 1 is a schematic structural diagram of an alternative embodiment of the micro vacuum air pump of the present invention.

Fig. 2 is a schematic perspective view of the micro vacuum air pump according to an alternative embodiment of the present invention.

Fig. 3 is a schematic structural view of a baffle plate in another alternative embodiment of the micro vacuum pump of the present invention.

Fig. 4 is a schematic view of a soundproof valve in another alternative embodiment of the micro vacuum air pump of the present invention.

Fig. 5 is a schematic structural diagram of a bottom case in yet another alternative embodiment of the vacuum micro-pump of the present invention.

Fig. 6 is a schematic structural view of a valve plate in yet another alternative embodiment of the vacuum micropump of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the following illustrative embodiments and description are only intended to illustrate the present invention, and are not intended as a limitation of the present invention, and that features of the embodiments and examples may be combined with each other without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

As shown in fig. 1-2, an alternative embodiment of the present invention provides a micro vacuum air pump, comprising:

a driving member 1;

the gas collecting component is butted with the driving piece 1 and driven by the driving piece 1, and comprises a shell 21, one end of which far away from the driving piece 1 is provided with a first gas outlet 210; and

the end cover 3 is assembled outside one end of the shell 21 provided with the first air outlet 210 in a sealing way, and the end cover 3 is provided with an air inlet nozzle 31 which is communicated with the inner cavity 211 of the shell 21 of the air collecting component in a sealing way;

exhaust hole 212 has been seted up on shell 21, miniature vacuum air pump still includes that the sealed cowling covers first venthole 210 on the shell 21 and offers the acoustic celotex board 4 and the sealed cowling of second venthole 41 and covers second venthole 41 on the acoustic celotex board 4 and offer the soundproof valve 5 of third venthole 51, acoustic celotex board 4 and soundproof valve 5 all set up in the space between shell 21 and end cover 3 and fall the room 61 of making an uproar with the space separation one-level that communicates in proper order, the room 62 and the tertiary room 63 of making an uproar fall in the second grade, wherein, the room 61 of making an uproar still is linked together with first venthole 210 is fallen to the one-level, the room 63 of making an.

The embodiment of the utility model provides a separate into a plurality of noise reduction rooms through setting up the space between septum 4 and soundproof valve 5 with shell 21 and end cover 3 inner wall, there is the one-level noise reduction room 61 that forms between septum 4 and the shell 21 at least, the second grade noise reduction room 62 and end cover 3 inner wall and septum 4 that form between septum 4 and the soundproof valve 5, the tertiary noise reduction room 63 that forms between septum 5, the gas that comes from the gas collection subassembly is in proper order through the one-level noise reduction room 61, the second grade noise reduction room 62, just discharge through exhaust hole 212 behind the tertiary noise reduction room 63, the exhaust structure of air pump has effectively been improved, the extension exhaust gas circuit, the noise that makes the air pump during operation produce reduces, and simultaneously, it still compresses the space between shell 21 and the 3 inner walls of end cover to set up septum 4 and soundproof valve 5, ensure the vacuum air intake of air pump, make the air pump during operation more stable.

In another alternative embodiment of the present invention, as shown in fig. 1, 3 and 4, the lateral edge of the baffle 4 is bent to protrude toward the gas collecting assembly to form a first sidewall 42 with a first predetermined height, the end of the first sidewall 42 is pressed against the housing 21, and the baffle 4, the first sidewall 42 and the housing 21 surround to form a one-stage noise reduction chamber 61.

In the present embodiment, the first sidewall 42 is provided to cooperate with the baffle 4 and the casing 21 to form the primary noise reduction chamber 61, and the first sidewall 42 also serves to support the baffle 4 on the casing 21; first lateral wall 42 and end cover 3 inner wall butt make acoustic celotex board 4 can fix in end cover 3 and air pump during operation acoustic celotex board 4 can not produce the removal, promote the stability of miniature vacuum air pump during operation.

In another optional embodiment of the present invention, as shown in fig. 1 and 3, the sound insulation valve 5 includes a cylinder 52 and a valve plate 53 assembled in the middle section of the cylinder 52, two ends of the cylinder 52 respectively press against the sound insulation board 4 and the end cover 3, and the cylinder 52, the valve plate 53 and the sound insulation board 4 surround to form a second-stage noise reduction chamber 62; the cylinder 52, the valve plate 53 and the end cover 3 are encircled to form a secondary noise reduction chamber 62; the cylinder wall of the cylinder 52 between the valve plate 53 and the end cover 3 is provided with a fourth air outlet 54 communicated with the inlet end of the exhaust channel 7.

In this embodiment, the two ends of the cylinder 52 are respectively pressed against the baffle 4 and the end cap 3, so that the cylinder 52 is supported and fixed between the baffle 4 and the end cap 3.

In another optional embodiment of the present invention, as shown in fig. 1 and 4, the third air outlet 51 is opened on the valve plate 53, and the third air outlet 51 is a normally closed air outlet that is only communicated when the gas pressure on the incoming side exceeds a preset value.

In the present embodiment, the third air outlet 51 is formed by a normally closed air outlet, and when the air pressure reaches a predetermined pressure value, the third air outlet is opened and communicated with the air outlet in a sensitive manner, so that the whole air exhaust path is smooth, and when the air pressure is low, the third air outlet is closed automatically, thereby effectively avoiding unnecessary air leakage. In specific implementation, the valve plate 53 in this embodiment may be made of an elastic material, and the third air outlet 51 is formed by forming a slit on the valve plate 53, where the slit is closed by an elastic force of the elastic material when the gas pressure is low, and when the gas pressure reaches a preset pressure value, the valve plate 53 is elastically deformed enough to open and penetrate the third air outlet 51.

In another alternative embodiment of the present invention, as shown in fig. 2-4, the sound insulation board 4 is provided with a mounting groove 43 disposed around the second air outlet 41 toward one side of the sound insulation valve 5, and the corresponding end of the cylinder 52 is inserted into the mounting groove 43, so as to effectively fix the sound insulation valve 5 and improve the stability of the micro vacuum air pump during operation.

In yet another alternative embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 5, an end surface of the housing 21 abutting against the driving member 1 is further recessed towards the inside of the housing 21 to form at least one cavity 213 communicating with the outlet end of the exhaust passage 7, the cavity 213 cooperates with the end surface of the driving member 1 abutting against the housing 21 to form a four-stage noise reduction chamber 64, and at least one exhaust hole 212 is further opened on a side wall of each cavity 213.

In the embodiment, the four-stage noise reduction chamber 64 respectively communicated with the exhaust hole 212 and the exhaust channel 7 is additionally arranged, gas enters the inner cavity 211 of the shell 21 from the air inlet nozzle 31 at the top of the end cover 3, enters the one-stage noise reduction chamber 61 through the first air outlet 210, sequentially passes through the two-stage noise reduction chamber 62, the three-stage noise reduction chamber 63 and the exhaust channel 7 and enters the four-stage noise reduction chamber 64, is discharged through the exhaust hole 212, and forms an N-shaped air path, so that the exhaust air path of the miniature vacuum air pump is prolonged, and the noise generated during the operation of the miniature vacuum air pump is reduced.

The plurality of cavities 213 communicate with each other through a communication passage 218.

On the other hand, because the four-stage noise reduction chamber 64 is formed by matching the cavity 213 with the driver 1 and the housing 21, when passing through the four-stage noise reduction chamber 64, the gas contacts with the housing of the driver 1, and takes away part of heat generated by the operation of the driver 1, thereby playing a role in heat dissipation.

In another alternative embodiment of the present invention, as shown in fig. 1 and 5, the ratio of the projected area of the cavity 213 on the butt end face of the driving member 1 to the butt end face area of the driving member 1 is not less than forty percent, which can effectively ensure the sufficient contact between the gas and the casing of the driving member 1, and ensure the heat dissipation effect.

In yet another alternative embodiment of the present invention, as shown in fig. 5, the exhaust channel 7 includes a main channel 71 opened in the side wall of the housing 21 and isolated from the inner cavity 211 of the housing 21 and a linking section 72 formed between the end cover 3 and the baffle 4 and connected to the main channel 71 in a butt joint manner, the linking section 72 is communicated with the third-level noise reduction chamber 63 as the inlet end of the exhaust channel 7, and the third-level noise reduction chamber 63 is effectively communicated with the fourth-level noise reduction chamber 64, and the exhaust gas path is simultaneously extended.

In the utility model discloses in still another optional embodiment, as shown in fig. 1-2, the one end that driving piece 1 and shell 21 were assembled is equipped with output shaft 11, and the one end terminal surface middle part that docks mutually with driving piece 1 of shell 21 is equipped with shaft hole 214, and driving piece 1's output shaft 11 passes shaft hole 214 and stretches into in the shell 21, still is provided with the axle sealing member 12 of cover locating on output shaft 11 in the shaft hole 214, effectively ensures the vacuum degree of miniature vacuum air pump, improves the stability when vacuum air pump uses.

In another alternative embodiment of the present invention, as shown in fig. 1, 2 and 5, the gas collecting assembly includes a bottom case 215, a leather cup 241 supporting frame 216 and a valve plate 217 which are sequentially butted to form the housing 21, an outer end of the bottom case 215 is butted against the driving member 1, the valve plate 217 is provided with a first gas outlet hole 210, the gas collecting assembly further includes an eccentric wheel 22 which is arranged in the bottom case 215 and fixed on the output shaft 11 of the driving member 1, a swing frame 23 which is obliquely inserted into an end of the eccentric wheel 22 away from the driving member 1 and has a plurality of driving cylinders 231, a diaphragm element 24 which is assembled on the leather cup 241 supporting frame 216 and has a plurality of leather cups 241, and an umbrella nut 25 which is inserted into the first gas outlet hole 210 on the valve plate 217 and is used for matching with the leather cup 241, one end of each driving cylinder 231 of the swing frame 23 which is inserted into each leather cup 241 of the diaphragm element 24 in one-to-one correspondence, a portion of the valve plate, each inclined surface 2170 is provided with a first air outlet hole 210, each inclined surface 2170 is parallel to the end surface of the cup 241 when the corresponding cup 241 is driven by the driving cylinder 231 of the swing frame 23 to move towards the valve plate 217 to the maximum stroke, and the compression amount between the cup 241 and the valve plate 217 can be maximized when the corresponding cup 241 is driven by the driving cylinder 231 to move towards the valve plate 217, so that the exhaust efficiency and the suction efficiency are improved.

The embodiment of the utility model provides a theory of operation does: the driving piece 1 drives the eccentric wheel 22 to rotate so as to drive the swing frame 23 to eccentrically rotate, when air is sucked, the driving cylinder 231 moves downwards, the space among the driving cylinder 231, the leather cup 241 and the valve plate 217 is enlarged, and air enters the inner cavity 211 from the vacuumized container through the air inlet nozzle 31 and then enters the space among the driving cylinder 231, the leather cup 241 and the valve plate 217; when exhausting, the driving cylinder 231 moves upwards, the space between the driving cylinder 231, the cup leather 241 and the valve plate 217 is reduced, and the gas is exhausted into the first-stage noise reduction chamber 61 through the first gas outlet hole 210, and is exhausted through the second-stage noise reduction chamber 62, the third-stage noise reduction chamber 63, the exhaust channel 7, the fourth-stage noise reduction chamber 64 and the exhaust hole 212 in sequence.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, and these forms are within the scope of the present invention.

Claims

1. A micro vacuum air pump comprising:

a drive member;

its characterized in that, the exhaust hole has been seted up on the shell, miniature vacuum air pump still includes that the sealed cowling covers first venthole on the shell and the acoustic celotex board and the sealed cowling that set up the second venthole on the acoustic celotex board and the soundproof valve who sets up the third venthole, the acoustic celotex board reaches the soundproof valve all set up in the space between shell and the end cover and will the space separation becomes the one-level that communicates in proper order and falls the room of making an uproar, the second grade and fall the room of making an uproar and the tertiary room of making an uproar, wherein, the one-level fall the room of making an uproar still with first venthole is linked.

2. The micro vacuum air pump according to claim 1, wherein the side edge of the baffle is bent to protrude toward the air collecting assembly to form a first side wall with a first predetermined height, the end of the first side wall is pressed against the housing, and the baffle, the first side wall and the housing enclose to form the primary noise reduction chamber.

3. The micro vacuum air pump according to claim 1, wherein the sound insulation valve comprises a cylinder and a valve plate assembled at the middle section of the cylinder, two ends of the cylinder are respectively pressed against the sound insulation plate and the end cover, and the cylinder, the valve plate and the sound insulation plate surround to form the secondary noise reduction chamber; the cylinder, the valve plate and the end cover are encircled to form the secondary noise reduction chamber; and a fourth air outlet communicated with the inlet end of the exhaust channel is formed in the wall of the cylinder body between the valve plate and the end cover.

4. The micro vacuum air pump according to claim 3, wherein the third air outlet is opened on the valve plate, and the third air outlet is a normally closed air outlet which is opened only when the air pressure at the air inlet side exceeds a predetermined value.

5. The micro vacuum air pump according to claim 3, wherein a side of the soundproof plate facing the soundproof valve is provided with a mounting groove provided around the second air outlet hole, and a corresponding end of the cylinder is inserted into the mounting groove.

6. The micro vacuum air pump according to claim 1, wherein an end surface of the housing, which is opposite to the driving member, is further recessed toward an inside of the housing to form at least one cavity communicating with an outlet end of the exhaust passage, the cavity and the end surface of the driving member, which is opposite to the housing, cooperate to form a four-stage noise reduction chamber, and a sidewall of each of the cavities is further provided with at least one exhaust hole.

7. The micro vacuum air pump according to claim 6, wherein the projected area of the cavity on the abutting end face of the driving member is not less than forty percent of the area of the abutting end face of the driving member.

8. The micro vacuum air pump according to claim 1, 3 or 6, wherein the exhaust passage comprises a main passage opened in the side wall of the housing and isolated from the inner cavity of the housing, and an engaging section formed between the end cap and the baffle plate and in butt communication with the main passage, and the engaging section is in communication with the tertiary noise reduction chamber as an inlet end of the exhaust passage.

9. The micro vacuum air pump as claimed in claim 1, wherein an output shaft is disposed at an end of the casing where the driving member is assembled, a shaft hole is disposed at a middle portion of an end surface of the casing where the driving member is abutted, the output shaft of the driving member extends into the casing through the shaft hole, and a shaft sealing member sleeved on the output shaft is further disposed in the shaft hole.

10. The micro vacuum air pump according to claim 1 or 9, wherein the air collecting assembly comprises a bottom shell, a cup holder and a valve plate, which are sequentially butted to form the housing, the outer end of the bottom shell is butted with the driving member, the valve plate is provided with a first air outlet hole, the air collecting assembly further comprises an eccentric wheel, a swing frame, a diaphragm element and an umbrella nut, the eccentric wheel is arranged in the bottom shell and fixed on an output shaft of the driving member, the swing frame is obliquely inserted into one end of the eccentric wheel, which is far away from the driving member, and is provided with a plurality of driving cylinders, the diaphragm element is assembled on the cup holder and is provided with a plurality of cups, the umbrella nut is inserted into the first air outlet hole on the valve plate and is matched with the cups, the driving cylinders of the swing frame are inserted into one end of the cups of the diaphragm element one by one, and the part of the valve plate, which faces the swing frame and corresponds, each inclined plane is provided with the first air outlet hole, and each inclined plane is parallel to the end face of the leather cup when the leather cup corresponding to the driving cylinder of the swing frame is driven to move to the maximum stroke in the valve plate direction.