CN218717397U

CN218717397U - Miniature vacuum air pump and air collecting and exhausting module thereof

Info

Publication number: CN218717397U
Application number: CN202222852448.9U
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: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-24
Anticipated expiration: 2032-10-27

Abstract

The embodiment of the utility model provides a miniature vacuum air pump and collection exhaust module thereof, collection exhaust module includes the cylinder body, rocker and diaphragm spare, the diapire of cylinder body is equipped with the shaft hole that the output shaft of power supply machine passed, the rocker is assembled on the output shaft of motor and has a plurality of actuating cylinder that is equipped with the gas pocket at the terminal surface, diaphragm spare includes that base plate and a plurality of correspond nested compression leather cup with the actuating cylinder, be equipped with on the compression leather cup diapire and be used for coveing the non return valve block of gas pocket and lock ring the adapter sleeve on the actuating cylinder lateral wall, lie in the inboard department of adapter sleeve on the compression leather cup diapire and still be equipped with first location portion, be provided with second location portion on the terminal surface of actuating cylinder, when the actuating cylinder was connected with the adapter sleeve nestification, first location portion also corresponds the cooperation location of inlaying in the axis direction of adapter sleeve with second location portion. The embodiment of the utility model provides a mutually insert through first location portion and second location portion and inlay the cooperation and make check valve piece and drive cylinder's mistake gas pocket remain good cooperation throughout, guarantee that the air current is stable.

Description

Miniature vacuum air pump and air collecting and exhausting module thereof

Technical Field

The embodiment of the utility model provides a relate to miniature vacuum air pump field, especially relate to a miniature vacuum air pump and collection exhaust module thereof.

Background

Miniature vacuum air pumps are adopted in products such as small vacuum packaging machines and electric breast pumps on the market to realize the suction function.

The existing micro vacuum air pump mainly comprises: the motor and the air collecting and exhausting module are driven by the motor to enable the air in the correspondingly connected pipelines to correspondingly flow to form negative pressure so as to realize a suction function. The exhaust collection module further comprises: establish open-ended cylinder body, assemble in the rocker of the inner chamber of cylinder body and locate on the top the diaphragm spare of the opening part on cylinder body top, the output shaft that the diapire middle part of cylinder body was equipped with the corresponding supporting motor of confession passes and stretches into shaft hole in the cylinder body, the rocker with the help of the eccentric shaft assemble in on the output shaft of motor and have a plurality of drive cylinder that is equipped with the gas pocket at the terminal surface, diaphragm spare includes base plate and a plurality of certainly the base plate protrusion extends the cylinder body inside with drive cylinder one-to-one nested connection's compression leather cup, be equipped with on the diapire of compression leather cup and be used for coveing the check valve piece of gas pocket and encircle the check valve piece setting be used for lock hoop in adapter sleeve on the drive cylinder lateral wall.

When the device is used, the motor drives the swing frame to rotate through the eccentric shaft, so that the driving cylinders alternately drive the corresponding compression leather cups, and gas in the cylinder body is alternately discharged into the compression leather cups through the air passing holes in the corresponding driving cylinders and is further discharged through the extrusion of the compression leather cups.

The inventor of this application discovers in the course of implementing the utility model that the above-mentioned prior art has the following defects: the compression leather cup is only arranged on the outer side wall of the driving cylinder through the connecting hoop, the bottom wall of the compression leather cup, which is provided with the check valve plate, and the end face of the driving cylinder, which is provided with the air hole, are not provided with other auxiliary positioning structures, in use, due to the pushing of high-speed operation and high-speed airflow, the bottom wall of the compression leather cup is easy to deviate from the end face of the driving cylinder, so that the check valve plate cannot cover the sealed air hole well, the sealing performance of the cylinder body is poor, the vacuum degree is high and small, the air pumping efficiency is reduced, and the performance is unstable.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem who solves provides a collection exhaust module of miniature vacuum air pump, can effectively ensure the check valve piece of compression leather cup and the gas pocket cooperation of crossing of driving tube good.

The embodiment of the utility model provides a technical problem who further solves provides a miniature vacuum air pump, can effectively ensure the check valve piece of compression leather cup and the air hole cooperation of crossing of driving barrel well.

In order to solve the technical problem, the embodiment of the utility model provides an adopt following technical scheme: the utility model provides a collection exhaust module of miniature vacuum air pump, includes that the top establishes open-ended cylinder body, assembles in the rocker of the inner chamber of cylinder body and locates the diaphragm spare of the opening part on cylinder body top, the diapire middle part of cylinder body is equipped with the output shaft that supplies corresponding supporting motor and passes and stretch into shaft hole in the cylinder body, the rocker assemble with the help of eccentric shaft in on the output shaft of motor and have a plurality of drive tube that is equipped with the gas pocket at the terminal surface, diaphragm spare includes base plate and a plurality of certainly the base plate protrusion extends inside with the cylinder body one-to-one nested connection's of drive tube compression leather cup, be equipped with on the diapire of compression leather cup and be used for hiding the non return valve block of gas pocket and encircle the non return valve block setting and correspond the lock sleeve in on the drive tube lateral wall, lie in on the diapire of compression leather cup inboard department of lock sleeve still is equipped with first location portion, be provided with the second location portion on the terminal surface of drive tube, when the drive tube with nested connection, first location portion with the second location portion also corresponds in the axis direction of lock sleeve is inserted and is cooperated and is fixed a position.

Furthermore, the first positioning part is a convex ring which is arranged on the bottom wall of the compression leather cup around the check valve plate and protrudes towards the inside of the connecting sleeve along the central axis direction of the connecting sleeve, and the second positioning part is correspondingly an annular groove arranged on the end surface of the driving cylinder; or the first positioning part is an annular groove which is formed by surrounding the check valve plate and is arranged on the bottom wall of the compression leather cup and is recessed towards one side far away from the connecting sleeve along the axial direction of the connecting sleeve, and the second positioning part is correspondingly a convex ring arranged on the end face of the driving cylinder.

Furthermore, the cylinder body comprises a bottom shell and a cylinder barrel fixedly butted with the bottom shell, the shaft hole is formed in the bottom shell, the bottom end of the cylinder barrel is communicated with the inner cavity of the bottom shell, the top wall of the cylinder barrel is provided with positioning holes, the number of the positioning holes is equal to the number of the compression leather cups, the positioning holes are uniformly distributed around the central axis of the cylinder barrel, and the compression leather cups respectively penetrate through the corresponding positioning holes and extend into the cylinder body to be connected with the driving barrel in a nested mode.

Furthermore, the air collecting and exhausting module further comprises a valve plate and an upper cover, wherein the periphery of the valve plate is abutted against the surface of one side, away from the cylinder body, of the diaphragm piece, the periphery of the upper cover is abutted against the upper cover on one side, away from the diaphragm piece, of the valve plate, the top surface or the side surface of the upper cover is provided with an air inlet nozzle, the inner side surface of the upper cover is provided with an air inlet chamber communicated with the air inlet nozzle, the periphery of the upper cover protrudes towards the direction of the valve plate and is used for correspondingly abutting against a ring edge on the periphery of the valve plate, the air inlet chamber is communicated to the inner cavity of the cylinder body through an air inlet channel which sequentially penetrates through the valve plate, the base plate of the diaphragm piece and the side wall of the cylinder barrel, and the air inlet chamber is correspondingly staggered with the air inlet nozzle and the air inlet channel communicated parts.

Furthermore, the air collecting and exhausting module also comprises a sound insulation board embedded in a concave cavity in the middle of the inner side surface of the upper cover, the periphery of the sound insulation board also protrudes towards the valve plate and is pressed against the valve plate, a first noise reduction chamber and a second noise reduction chamber are correspondingly formed between the valve plate and the upper cover, the first noise reduction chamber is formed by surrounding the middle of the valve plate and the sound insulation board, the valve plate middle part still is equipped with a plurality of and corresponds the intercommunication first fall the room of making an uproar and the valve plate leans on the space of diaphragm spare one side and certainly the valve plate leans on the space of diaphragm spare one side to the first one-way discharge valve that the room one-way switched on falls in the first noise reduction, the room is fallen in the second by the acoustic celotex board with the upper cover encloses and forms, the acoustic celotex board middle part is equipped with and corresponds the intercommunication first fall the room of making an uproar with the room is fallen in the second and certainly the first one-way discharge valve of second that falls the room one-way switched on falls in the room to the second of making an uproar falls in the first noise reduction.

Furthermore, the first one-way exhaust valve is composed of a first exhaust hole formed in the valve plate and first diced umbrellas movably covering the first exhaust hole in a one-to-one correspondence manner; the second one-way exhaust valve is composed of a second exhaust hole formed in the sound insulation board and a second umbrella block which movably covers the second exhaust hole in a one-to-one correspondence mode.

Furthermore, the bottom surface of the bottom shell is provided with a third noise reduction chamber which is formed by a flow channel bent for multiple times and is isolated from the inner cavity of the cylinder body, and the second noise reduction chamber is communicated to the third noise reduction chamber through a return channel which sequentially penetrates through the sound insulation plate, the valve plate, the base plate of the diaphragm piece, the side wall of the cylinder barrel and the side wall of the bottom shell.

Furthermore, an exhaust nozzle is further arranged on the top surface or the side surface of the upper cover, an exhaust chamber communicated with the exhaust nozzle is arranged on the inner side surface of the upper cover, the third noise reduction chamber is communicated to the exhaust chamber through an exhaust channel which sequentially penetrates through the side wall of the bottom shell, the side wall of the cylinder barrel, the base plate of the diaphragm piece and the valve plate, and the exhaust chamber is correspondingly arranged in a staggered mode with the position where the exhaust channel is communicated with the exhaust nozzle.

Furtherly, still be provided with the soundproof valve in the exhaust chamber, the soundproof valve includes and is leaning on one end department to be equipped with the base plate of cup jointing the hole and keep away from the one end of cup jointing the hole from the base plate and correspond the protrusion and correspond and insert normally closed check valve body in the exhaust nozzle, the base plate with the help of cup joint the hole cover and locate in the exhaust chamber be on a parallel with on the reference column that the exhaust nozzle set up, normally closed check valve body have by elastic material make and to the exhaust nozzle outer end drill way direction protrusion is the valve diaphragm of dome shape, valve diaphragm middle part be provided with seal closure under the normality and be in the exhaust chamber atmospheric pressure surpass the normally closed exhaust slot that can open when predetermineeing the threshold value promptly.

For solving the above-mentioned technical problem that further solve, the embodiment of the utility model discloses still adopt following technical scheme: a micro vacuum air pump comprises an air collecting and exhausting module and a motor for driving the air collecting and exhausting module to act, wherein the air collecting and exhausting module is any one of the air collecting and exhausting modules, and a swing frame in the air collecting and exhausting module is assembled on an output shaft of the motor through an eccentric shaft.

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 through on the diapire of compression leather cup with set up first location portion and second location portion on the terminal surface of driving cylinder respectively, will the adapter sleeve is tightly hooped extremely when on the driving cylinder, first location portion with second location portion also corresponds insert on the axis direction of adapter sleeve and inlay the cooperation and fix a position, strengthened being connected between the diapire of compression leather cup and the terminal surface of driving cylinder from this, at high-speed operation in-process, the check valve piece on the compression leather cup diapire can not misplace and remain good cooperation throughout with the gas passing hole of driving cylinder, makes vacuum (negative pressure) in the cylinder body maintain in normal range to ensure suction performance and make the compressed air flow discharge outer row through the gas passing hole steadily.

Drawings

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

Fig. 2 is a schematic perspective view of the disassembled state of an optional embodiment of the air collecting and exhausting assembly of the vacuum air pump of the present invention.

Fig. 3 is a schematic perspective view of a diaphragm member in an alternative embodiment of the air collecting and exhausting assembly of the vacuum micro-pump of the present invention.

Fig. 4 is a schematic view of the three-dimensional structure of the micro vacuum air pump with the connecting tube of the diaphragm upward in an alternative embodiment of the air collecting and discharging assembly of the present invention.

Fig. 5 is a schematic view of a three-dimensional structure of a swing frame in an optional embodiment of the air collecting and exhausting assembly of the vacuum air pump of the present invention.

Fig. 6 is a schematic sectional view of an alternative embodiment of the air collecting and exhausting assembly of the vacuum micro-pump according to the present invention in a combined state.

Fig. 7 is a schematic view of the inner side surface of the upper cover in an alternative embodiment of the air collecting and exhausting assembly of the vacuum air pump of the present invention.

Fig. 8 is a schematic view of an air inlet path structure of the micro vacuum air pump according to an alternative embodiment of the present invention, in which the external air flows from the air inlet nozzle of the upper cover to the cylinder.

Fig. 9 is a schematic structural view of a return air passage for the air flow flowing from the upper cover to the third noise reduction chamber at the bottom of the cylinder body in an alternative embodiment of the vacuum micro-air pump of the present invention.

Fig. 10 is a schematic perspective view of the miniature vacuum air pump according to an alternative embodiment of the present invention, wherein the bottom wall of the bottom shell of the cylinder body faces upward.

Fig. 11 is a schematic view of an exhaust path structure of the air flow from the third noise reduction chamber at the bottom of the cylinder to the exhaust nozzle of the upper cover in an alternative embodiment of the vacuum air pump of the present invention.

Fig. 12 is a schematic structural view of a soundproof valve in an alternative embodiment of the air collecting and discharging assembly of the micro vacuum air pump 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.

As shown in fig. 1-6, an optional embodiment of the present invention provides an exhaust collection module 1 of a micro vacuum air pump, for generating negative pressure under the driving of a matched motor 3 to achieve a suction function, the exhaust collection module 1 includes a cylinder 10 with an opening at the top end, a swing frame 12 assembled in an inner cavity 100 of the cylinder 10, and a diaphragm 14 disposed at the opening at the top end of the cylinder 10, the middle of the bottom wall of the cylinder 10 is provided with a shaft hole 101 for an output shaft 30 of the motor 3 to pass through and extend into the cylinder 10, the swing frame 12 is assembled on the output shaft 30 of the motor 3 by means of an eccentric shaft 120 and has a plurality of driving cylinders 122 with air passing holes 121 at the end surface, the diaphragm 14 includes a base plate 140 and a plurality of compression leather cups 142 protruding from the base plate 140 and extending into the cylinder 10 to be in one-to-one nested connection with the driving cylinders 122, the bottom wall of the compression leather cups 142 is provided with check valve plates 141 for covering the air passing holes 121 and a check valve plate 143 disposed around the base plate 141 and fastened to the connecting sleeve 143 on the connecting sleeve 122, and a second positioning part of the bottom wall of the compression leather cups is provided with a second positioning part 144 that is also disposed on the connecting sleeve and is connected to the inner side of the second positioning part of the connecting sleeve 124 that is disposed on the connecting sleeve and that is connected to the connecting sleeve 143 that is disposed on the connecting sleeve 122.

In the embodiment, the first positioning portion 144 and the second positioning portion 124 are respectively disposed on the bottom wall of the compression leather cup 142 and the end surface of the driving cylinder 122, when the connecting sleeve 143 on the compression leather cup 142 is tightly fastened to the driving cylinder 122, the first positioning portion 144 and the second positioning portion 124 are also correspondingly positioned in an inserting and fitting manner in the central axis direction of the connecting sleeve 143, so that the connection between the bottom wall of the compression leather cup 142 and the end surface of the driving cylinder 122 is enhanced, in the high-speed operation process, the check valve plate 141 on the bottom wall of the compression leather cup 142 and the air vent 121 on the driving cylinder 122 are not dislocated and always keep a good fit, so that the vacuum degree (negative pressure) in the cylinder 10 can be maintained in a normal range, thereby ensuring the suction performance and enabling the compressed air flow to be stably discharged through the air vent 121.

As shown in fig. 4 to 6, in another optional embodiment of the present invention, the first positioning portion 144 is a convex ring which is disposed on the bottom wall of the compression cup 142 around the check valve plate 141 and protrudes toward the inside of the connecting sleeve 143 along the central axis direction of the connecting sleeve 143, and the second positioning portion 124 is an annular groove disposed on the end surface of the driving cylinder 122; or, the first positioning portion 144 is an annular groove that is disposed on the bottom wall of the compression cup 142 around the check valve plate 141 and is recessed towards a side away from the connecting sleeve 143 along the axial direction of the connecting sleeve 143, and the second positioning portion 124 corresponds to a convex ring disposed on the end surface of the driving cylinder 122.

In this embodiment, the bottom wall of the compression cup 142 and the end surface of the driving cylinder 122 can be firmly and relatively positioned by inserting and fitting the convex ring and the annular groove, and the installation is also facilitated by disposing the convex ring on the bottom wall of the compression cup 142 as the first positioning portion 144 and disposing the annular groove on the end surface of the driving cylinder 122 as the second positioning portion 124, or disposing the annular groove on the bottom wall of the compression cup 142 as the first positioning portion 144 and disposing the convex ring on the end surface of the driving cylinder 122 as the second positioning portion 124.

As shown in fig. 4, 5 and 6, in another optional embodiment of the present invention, the cylinder body 10 includes a bottom shell 102 and a cylinder 103 fixed to the bottom shell 102 in a butt joint manner, the shaft hole 101 is opened on the bottom shell 102, a bottom end of the cylinder 103 is communicated with an inner cavity of the bottom shell 102, a top wall of the cylinder 103 is provided with positioning holes 105, the number of the positioning holes is equal to the number of the compression leather cups 142, and the positioning holes 105 are uniformly distributed around a central axis of the cylinder 103, and each compression leather cup 142 respectively penetrates through the corresponding positioning hole 105 and extends into the cylinder body 10 to be connected with the driving cylinder 122 in a nested manner.

In the embodiment, the cylinder body 10 is divided into the bottom shell 102 and the cylinder 103 which are manufactured respectively and then are fixedly assembled in an abutting mode, so that the manufacturing cost is effectively reduced, the compression leather cup 142 can be well positioned and assembled by the positioning hole 105 formed in the cylinder 103, and the compression leather cup 142 and the driving cylinder 122 can be well abutted.

As shown in fig. 1, 2, 6-9 and 11, in another alternative embodiment of the present invention, the air collecting and exhausting module 1 further includes a valve plate 16 pressing against a side surface of the diaphragm 14 away from the cylinder 10 with a peripheral edge, and an upper cover 18 pressing against a side of the valve plate 16 away from the diaphragm 14 with a peripheral edge, a top surface or a side surface of the upper cover 18 is provided with an air inlet nozzle 180, an air inlet chamber 182 communicating with the air inlet nozzle 180 is provided on an inner side surface of the upper cover 18, a peripheral edge of the upper cover 18 protrudes toward the valve plate 16 to form an annular edge 183 correspondingly pressing against the peripheral edge of the valve plate 16, the air inlet chamber 182 communicates with the inner cavity 100 of the cylinder 10 through an air inlet channel 20 sequentially penetrating through the valve plate 16, the base plate 140 of the diaphragm 14 and the side wall of the cylinder 103, and the air inlet chamber 182 is respectively disposed in a staggered manner with the air inlet nozzle 180 and the air inlet channel 20.

In the present embodiment, by further providing the valve plate 16 and the upper cover 18, providing the intake nozzle 180 and the intake chamber on the upper cover 18, and providing the intake passage 30 sequentially penetrating through the valve plate 16, the base plate 140 of the diaphragm 14, and the side wall of the cylinder 103 to communicate the intake chamber 182 with the inner cavity 100 of the cylinder 10, external air can be smoothly drawn into the cylinder 10, and further, the intake chamber 182 is correspondingly disposed at a position where it communicates with the intake nozzle 180 and the intake passage 20, respectively, so that not only the direct flushing of the air from the intake nozzle 180 into the intake passage 20 is avoided, but also the turning flow of the air is promoted to extend the flow path of the air, thereby making the flow of the air more stable and reducing noise.

As shown in fig. 2, 6 and 9, in another optional embodiment of the present invention, the air collecting and exhausting module 1 further includes a sound insulation plate 19 embedded in the cavity 181 in the middle of the inner side surface of the upper cover 18, the periphery of the sound insulation plate 19 further protrudes toward the valve plate 16 and presses against the valve plate 16 to correspondingly form a first noise reduction chamber 22 and a second noise reduction chamber 24 between the valve plate 16 and the upper cover 18, the first noise reduction chamber 22 is surrounded by the middle of the valve plate 16 and the sound insulation plate 19, the middle of the valve plate 16 is further provided with a plurality of first one-way exhaust valves 160 correspondingly communicating the first noise reduction chamber 22 and the space of the valve plate 16 near the diaphragm 14 and conducting to the first noise reduction chamber 22 in one-way from the space of the valve plate 16 near the diaphragm 14, the second noise reduction chamber 24 is surrounded by the sound insulation plate 19 and the upper cover 18, and the middle of the sound insulation plate 19 is provided with a second one-way exhaust valve 190 correspondingly communicating the first noise reduction chamber 22 and the second noise reduction chamber 24 and conducting to the first one-way noise reduction chamber 22.

In this embodiment, the sound insulation board 19 is further embedded in the concave cavity 181 on the inner side surface of the upper cover 18, the first noise reduction chamber 22 and the second noise reduction chamber 24 are correspondingly formed between the valve plate 16 and the upper cover 18 by being separated by the sound insulation board 19, and the first one-way exhaust valve 160 and the second one-way exhaust valve 190 are correspondingly arranged on the valve plate 16 and the sound insulation board 19, respectively, so that the air flow discharged from the cylinder 10 can be well guided to pass through the first noise reduction chamber 22 and the second noise reduction chamber in sequence for noise reduction treatment, and the noise reduction effect of the air pump is effectively improved.

As shown in fig. 2, fig. 6 and fig. 9, in another optional embodiment of the present invention, the first one-way exhaust valve 160 is composed of a first exhaust hole 161 opened on the valve plate 16 and a first umbrella 162 movably covering the first exhaust hole 161 one by one; the second one-way exhaust valve 190 is composed of a second exhaust hole 191 opened on the sound insulation board 19 and a second umbrella rib 192 movably covering the second exhaust hole 191 one by one. The first one-way exhaust valve 160 and the second one-way exhaust valve 190 are correspondingly formed by adopting the combined structure of the exhaust holes and the umbrella ribs, the structure is simple, the manufacture and the assembly are easy, and the gas backflow can be effectively prevented.

As shown in fig. 2, 6 and 9-11, in another alternative embodiment of the present invention, the bottom surface of the bottom shell 102 is provided with a third noise reduction chamber 26 which is formed by a flow channel bent multiple times and is isolated from the inner cavity 100 of the cylinder body 10, and the second noise reduction chamber 24 is further communicated to the third noise reduction chamber 26 through a return channel 25 which sequentially penetrates through the sound insulation plate 19, the valve plate 16, the base plate 140 of the diaphragm 14, the side wall of the cylinder 103 and the side wall of the bottom shell 102. In this embodiment, the third noise reduction chamber 26 formed by the multiple bent flow channels is disposed on the bottom surface of the bottom case 102, and the return channel 25 sequentially penetrating through the sound insulation plate 19, the valve plate 16, the base plate 140 of the diaphragm member 14, the side wall of the cylinder 103, and the side wall of the bottom case 102 is disposed to correspondingly communicate the second noise reduction chamber 24 and the third noise reduction chamber 26, so that the gas path of the exhaust gas is further lengthened, and the third noise reduction chamber 26 formed by the multiple bent flow channels is matched to make the flow of the gas more stable, and the noise reduction effect is better. In the embodiment shown in fig. 2 and 9, the return channel 25 is a through groove suitably recessed from the side of the baffle plate 19 at the baffle plate 19, and is in the form of a through hole in the valve plate 16, the diaphragm 14, the side wall of the cylinder 103 and the side wall of the bottom shell 102; in addition, as shown in fig. 2, 6, and 9-11, the third noise reduction chamber 26 may penetrate to the bottom surface of the bottom shell 102, and be assembled to the bottom surface of the bottom shell 102 by a gasket 106 for covering and sealing, so that the bottom shell 102 can be conveniently manufactured.

As shown in fig. 1, 2, 7 and 11, in another optional embodiment of the present invention, an exhaust nozzle 184 is further disposed on the top surface or the side surface of the upper cover 18, an exhaust chamber 186 communicated with the exhaust nozzle 184 is disposed on the inner side surface of the upper cover 18, the third noise reduction chamber 26 is further communicated to the exhaust chamber 186 through an exhaust channel 28 sequentially passing through the side wall of the bottom case 102, the side wall of the cylinder 103, the base plate 140 of the diaphragm 14 and the valve plate 16, and the exhaust chamber 186 is respectively disposed in a staggered manner corresponding to the positions where the exhaust channel 28 and the exhaust nozzle 184 communicate with each other.

In the present embodiment, the exhaust nozzle 184 and the exhaust chamber 186 are disposed on the upper cover 18, and the exhaust channel 28 sequentially penetrating through the side wall of the bottom case 102, the side wall of the cylinder 103, the base plate 140 of the diaphragm 14 and the valve plate 16 is disposed to communicate the third noise reduction chamber with the exhaust chamber 186, so as to exhaust the airflow subjected to multi-stage noise reduction through the exhaust nozzle 184, and meanwhile, the exhaust chamber 186 is disposed in a staggered manner corresponding to the positions where the exhaust channel 28 and the exhaust nozzle 184 communicate with each other, so that not only can the air flowing from the exhaust channel 28 be prevented from directly rushing into the exhaust nozzle 184, but also the airflow is diverted to flow to prolong the airflow flow path, thereby making the airflow flow more stable and reducing noise.

Referring to fig. 7, 11 and 12, in another optional embodiment of the present invention, a soundproof valve 17 is further disposed in the exhaust chamber 186, the soundproof valve 17 includes a base plate 172 having a sleeve hole 170 at one end and a normally closed check valve 174 protruding from one end of the base plate 172 away from the sleeve hole 170 and correspondingly inserted into the exhaust nozzle 184, the base plate 172 is sleeved on a positioning column 188 disposed in the exhaust chamber 186 in parallel with the exhaust nozzle 184 by means of the sleeve hole 170, the normally closed check valve 174 has a valve diaphragm 1740 made of an elastic material and protruding in a dome shape toward an outer end orifice of the exhaust nozzle 184, and an exhaust normally closed slit 1742 is disposed in the middle of the valve diaphragm 1740 and is sealed and closed in a normal state and is opened when the air pressure in the exhaust chamber 184 exceeds a preset threshold. In the present embodiment, by further providing the sound-proof valve 17 in the exhaust chamber 186, the normally closed exhaust slit 1742 on the normally closed one-way valve 174 can open to exhaust outwards only when the air pressure in the exhaust chamber 184 exceeds a preset threshold value by inserting the normally closed one-way valve 174 into the exhaust nozzle 184; moreover, the valve diaphragm 1740 is made of an elastic material, and the larger the air pressure in the exhaust chamber 184 is, the larger the opening width of the normally closed exhaust slot 1742 is, and the higher the exhaust efficiency is; the valve diaphragm 1740 is designed to have a dome-shaped structure, so that the valve diaphragm 1740 is pushed by the air in the exhaust chamber 184 to open the normally closed exhaust slit 1742 to exhaust air outwards, and the air or other foreign matters outside the valve diaphragm 1740 push the valve diaphragm 1740 to open the normally closed exhaust slit 1742 relatively difficultly, so that the one-way through effect can be effectively achieved, the valve diaphragm 1740 is made of an elastic material and can also achieve good sound absorption and noise reduction effects, in specific implementation, the valve diaphragm 1740 is made of an elastic material such as rubber and silica gel, the normally closed exhaust slit 1742 can be single or two or more, and in the embodiment shown in fig. 12, the two normally closed exhaust slits 1742 intersecting at the center point of the dome in a cross shape are provided. The base plate 172 is sleeved on a positioning post 188 arranged in the exhaust chamber 186 and parallel to the exhaust nozzle 184 by means of the sleeving hole 170, so that the assembly and positioning of the soundproof valve 17 are facilitated.

On the other hand, the embodiment of the present invention further provides a micro vacuum air pump, as shown in fig. 1-12, comprising an air collecting and exhausting module 1 and a motor 3 for driving the air collecting and exhausting module 1 to act, wherein the air collecting and exhausting module 1 is the air collecting and exhausting module according to any of the foregoing embodiments, and the swing frame 12 in the air collecting and exhausting module 1 is assembled on the output shaft 30 of the motor 3 by means of the eccentric shaft 120.

The miniature vacuum air pump provided by the embodiment can well position and connect the bottom wall of the compression leather cup 142 and the end surface of the driving cylinder 122, and in the high-speed operation process of the air pump, the check valve plate 141 on the bottom wall of the compression leather cup 142 and the air passing hole 121 on the driving cylinder 122 cannot be dislocated and always keep good matching, so that the vacuum degree (negative pressure) in the cylinder body 10 can be maintained in a normal range, thereby ensuring the suction performance and enabling the compressed air flow to be stably discharged through the air passing hole 121.

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 changes without departing from the spirit and the scope of the invention as claimed.

Claims

1. The utility model provides a collection exhaust module of miniature vacuum air pump, includes that the top establishes open-ended cylinder body, assembles in the rocker of the inner chamber of cylinder body and locates the diaphragm spare of the opening part on cylinder body top, the diapire middle part of cylinder body is equipped with the output shaft that supplies corresponding supporting motor and passes and stretch into shaft hole in the cylinder body, the rocker assembles in with the help of the eccentric shaft on the output shaft of motor and has a plurality of drive tube that is equipped with the air pocket at the terminal surface, diaphragm spare includes base plate and a plurality of certainly the base plate protrusion extends inside with the cylinder body one-to-one nested connection's of drive tube compression leather cup, be equipped with on the diapire of compression leather cup and be used for hiding the check valve block of air pocket and encircle the setting of check valve block and correspond the lock sleeve on the drive tube lateral wall, its characterized in that lie in on the diapire of compression leather cup still be equipped with first location portion in the inboard department of lock sleeve, be provided with the second location portion on the terminal surface of drive tube, when the drive tube with the lock sleeve nested connection, first location portion also correspond in the lock sleeve orientation of axis.

2. The air collecting and exhausting module of the micro vacuum air pump according to claim 1, wherein the first positioning portion is a convex ring which is arranged on the bottom wall of the compression leather cup around the check valve plate and protrudes towards the inside of the connecting sleeve along the central axis direction of the connecting sleeve, and the second positioning portion is a corresponding annular groove arranged on the end surface of the driving cylinder; or the first positioning part is an annular groove which is formed by surrounding the check valve plate and is arranged on the bottom wall of the compression leather cup and is recessed towards one side far away from the connecting sleeve along the axial direction of the connecting sleeve, and the second positioning part is correspondingly a convex ring arranged on the end face of the driving cylinder.

3. The air collecting and exhausting module of the micro vacuum air pump as claimed in claim 1 or 2, wherein the cylinder body comprises a bottom shell and a cylinder barrel fixed in butt joint with the bottom shell, the shaft hole is opened on the bottom shell, the bottom end of the cylinder barrel is communicated with the inner cavity of the bottom shell, the top wall of the cylinder barrel is provided with positioning holes which are the same as the compression leather cups in number and are uniformly distributed around the central axis of the cylinder barrel, and each compression leather cup respectively passes through the corresponding positioning hole to extend into the cylinder body to be connected with the driving barrel in a nested manner.

4. The air collecting and exhausting module of the micro vacuum air pump as claimed in claim 3, further comprising a valve plate with a periphery abutting against a side surface of the diaphragm away from the cylinder body and an upper cover with a periphery abutting against a side of the valve plate away from the diaphragm, wherein the top surface or the side surface of the upper cover is provided with an air inlet nozzle, the inner side surface of the upper cover is provided with an air inlet chamber communicated with the air inlet nozzle, the periphery of the upper cover protrudes towards the valve plate to form an annular edge correspondingly abutting against the periphery of the valve plate, the air inlet chamber is communicated with the inner cavity of the cylinder body through an air inlet channel sequentially penetrating through the valve plate, the base plate of the diaphragm and the side wall of the cylinder barrel, and the air inlet chamber is correspondingly displaced from the air inlet nozzle and the air inlet channel.

5. The air collecting and exhausting module of a micro vacuum air pump according to claim 4, further comprising a sound insulation board embedded in a concave cavity in the middle of the inner side of the upper cover, wherein the periphery of the sound insulation board further protrudes toward the valve board and is pressed against the valve board, so that a first noise reduction chamber and a second noise reduction chamber are correspondingly formed between the valve board and the upper cover, the first noise reduction chamber is surrounded by the middle of the valve board and the sound insulation board, the middle of the valve board is further provided with a plurality of first one-way exhaust valves correspondingly communicating the first noise reduction chamber and the space of one side of the valve board close to the membrane piece and conducting unidirectionally from the space of one side of the valve board close to the membrane piece to the first noise reduction chamber, the second noise reduction chamber is surrounded by the sound insulation board and the upper cover, and the middle of the sound insulation board is provided with a second one-way exhaust valve correspondingly communicating the first noise reduction chamber and the second noise reduction chamber and conducting unidirectionally from the first noise reduction chamber to the second noise reduction chamber.

6. The air collecting and exhausting module of a micro vacuum air pump as claimed in claim 5, wherein the first one-way exhaust valve is opened on the valve plate and is composed of a first exhaust hole and a first diced umbrella which movably covers the first exhaust hole in a one-to-one correspondence manner; the second one-way exhaust valve is composed of a second exhaust hole formed in the sound insulation board and a second umbrella block which movably covers the second exhaust hole in a one-to-one correspondence mode.

7. The air collecting and exhausting module of a micro vacuum air pump as claimed in claim 5, wherein the bottom surface of the bottom shell is provided with a third noise reduction chamber which is formed by a flow channel bent for a plurality of times and is isolated from the inner cavity of the cylinder body, and the second noise reduction chamber is further communicated to the third noise reduction chamber through a return channel which sequentially penetrates through the sound insulation plate, the valve plate, the base plate of the diaphragm member, the side wall of the cylinder barrel and the side wall of the bottom shell.

8. The air collecting and exhausting module of a micro vacuum air pump as claimed in claim 7, wherein an exhaust nozzle is further provided on the top surface or the side surface of the upper cover, and an exhaust chamber communicated with the exhaust nozzle is provided on the inner side surface of the upper cover, the third noise reduction chamber is further communicated to the exhaust chamber through an exhaust passage sequentially passing through the side wall of the bottom case, the side wall of the cylinder, the base plate of the diaphragm member and the valve plate, and the exhaust chamber is correspondingly disposed in a staggered manner at a position where the exhaust passage and the exhaust nozzle are communicated, respectively.

9. The air collecting and exhausting module of a micro vacuum air pump according to claim 8, wherein a soundproof valve is further disposed in the exhaust chamber, the soundproof valve comprises a base plate having a sleeve hole at one end thereof and a normally closed one-way valve body protruding from the end of the base plate away from the sleeve hole and inserted into the exhaust nozzle, the base plate is sleeved on a positioning column disposed in parallel with the exhaust nozzle in the exhaust chamber by means of the sleeve hole, the normally closed one-way valve body has a valve membrane made of an elastic material and protruding in a dome shape toward the outer end orifice of the exhaust nozzle, and a normally closed exhaust slit is disposed in the middle of the valve membrane and is sealed and closed in a normal state, and is opened when the air pressure in the exhaust chamber exceeds a predetermined threshold value.

10. A micro vacuum air pump, comprising an air collecting and exhausting module and a motor for driving the air collecting and exhausting module to act, wherein the air collecting and exhausting module is the air collecting and exhausting module according to any one of claims 1 to 9, and a swing frame in the air collecting and exhausting module is assembled on an output shaft of the motor by means of an eccentric shaft.