CN217380826U

CN217380826U - Vacuum suction pump

Info

Publication number: CN217380826U
Application number: CN202220471903.8U
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: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-09-06
Anticipated expiration: 2032-03-03

Abstract

The embodiment of the utility model provides a vacuum air suction pump, which comprises a driving piece; by the gas collection subassembly of driving piece driven, the gas collection subassembly includes: the shell is butted with one end of the driving piece, which is provided with the output shaft, and one end of the shell, which is far away from the driving piece, is provided with a first airflow hole; the end cover is assembled outside one end of the shell, which is provided with the first air flow hole, in a sealing way; the sealing cover covers the first airflow hole on the shell and is provided with a sound insulation board of a second airflow hole, the sound insulation board is arranged in a space between the shell and the end cover and divides the space into a primary noise reduction chamber communicated with the first airflow hole and a secondary noise reduction chamber communicated with the primary noise reduction chamber through the second airflow hole; the one end terminal surface of shell and driving piece butt joint still is equipped with and extends and is located the outside suction nozzle and the exhaust nozzle of the side of driving piece with the output shaft is parallel and towards the direction that deviates from the end cover, and the suction nozzle communicates with the inner chamber of shell is sealed, and the exhaust nozzle passes through exhaust passage and connects the second grade and fall the room of making an uproar. The embodiment can effectively reduce the size of the product.

Description

Vacuum suction pump

Technical Field

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

Background

The existing vacuum suction pump is commonly used in a small vacuum packaging machine and an electric breast pump. Existing vacuum getter pumps generally include a drive member and a gas collection assembly driven by the drive member. The gas collection assembly is driven by a driving piece to reciprocate through a leather cup arranged in a corresponding shell, so that relative low pressure is periodically formed in the shell, outside air is sucked in through the air inlet nozzle, the sucked air is compressed and then is discharged from the air outlet nozzle, and if the air collection assembly moves circularly, the functions of vacuumizing, negative pressure suction and the like are realized.

The existing gas collection assembly is generally provided with a gas inlet nozzle which extends outwards along the longitudinal direction of a vacuum suction pump on the end face of one end of a shell far away from a driving part, and an exhaust nozzle which extends outwards and is vertical to the longitudinal direction (namely the transverse direction) of the vacuum suction pump is arranged at the bottom of the shell, so that the longitudinal and transverse dimensions of the vacuum suction pump are obviously increased, and when the gas collection assembly is used for specific products, spaces for accommodating gas path structures correspondingly connecting the gas inlet nozzle and the exhaust nozzle are reserved in the longitudinal and transverse directions respectively, so that the size of a terminal product is relatively large, and the miniaturization and the compactness design of the structure of the terminal product are not facilitated.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem who solves provides a vacuum aspirator pump, can effectively reduce the product size and make things convenient for the miniaturized design of terminal product.

In order to solve the above technical problem, an embodiment of the present invention first provides the following technical solution: a vacuum getter pump comprising:

a driving piece with an output shaft protruding outwards is arranged on one end face of the driving piece;

a gas collection assembly driven by the drive member, the gas collection assembly comprising:

the shell is butted with one end of the driving piece, which is provided with the output shaft, and one end of the shell, which is far away from the driving piece, is provided with a first airflow hole; the end cover is assembled outside one end, provided with the first air flow hole, of the shell in a sealing mode; and

the sealing cover covers the first air flow hole on the shell and is provided with a sound insulation board of a second air flow hole, the sound insulation board is arranged in a space between the shell and the end cover and divides the space into a primary noise reduction chamber communicated with the first air flow hole and a secondary noise reduction chamber communicated with the primary noise reduction chamber through the second air flow hole;

and the end surface of one end, butted with the driving part, of the shell is also provided with an air inlet nozzle and an air outlet nozzle which are parallel to the output shaft, extend in the direction departing from the end cover and are positioned outside the side surface of the driving part, the air inlet nozzle is hermetically communicated with the inner cavity of the shell, and the air outlet nozzle is connected with the secondary noise reduction chamber through an air outlet channel which is formed inside the shell wall of the shell and is isolated from the inner cavity of the shell.

Further, the shell includes drain pan, cylinder body and the valve plate of butt joint from bottom to top in proper order, the drain pan butt joint equipment in the driving piece is equipped with the one end of output shaft, the drain pan middle part is equipped with the supply the shaft hole that the output shaft passed, suction nozzle and exhaust nozzle all locate the edge portion position that keeps close to of drain pan, first airflow hole is located on the valve plate, still insert on the valve plate and be equipped with the first umbrella butyl that is used for the activity to cover the first airflow hole at the drill way of noise insulation board side.

Further, the air inlet nozzle and the air exhaust nozzle are arranged side by side and outside the same side of the driving piece.

Further, exhaust passage is including locating the inside and top of lateral wall of cylinder body is equipped with first uncovered and the bottom is equipped with the tertiary chamber of making an uproar that falls of first interior exhaust hole, locates the inside and top of lateral wall of drain pan is equipped with the second uncovered and the bottom with the level four chamber of making an uproar that the exhaust nozzle communicates falls and locates the exhaust hole in the valve plate leans on the second at marginal position, the exhaust hole in the second with first uncovered sealed butt joint, first interior exhaust hole with the uncovered sealed butt joint of second.

Furthermore, the cross section of the three-stage noise reduction chamber is in a long strip shape, and the projections of the second inner exhaust hole and the first inner exhaust hole on the cross section are respectively positioned at two opposite ends of the cross section in the length direction.

Further, the second inner exhaust hole is formed in one end of the valve plate and exposed outside the sound insulation plate.

Furthermore, a second umbrella cover for movably covering the opening of the second airflow hole on the end cover side is also inserted on the sound insulation plate.

Further, be equipped with on the cylinder body a plurality of both ends link up and with the jar room of the mutual isolation of room of making an uproar falls in the tertiary level, the gas collection subassembly still includes a plurality of one-to-one assemble in each jar indoor leather cup, be used for driving the rocker of leather cup and with the eccentric shaft that the rocker links to each other in order to drive the rocker, the valve plate is just all seted up to every jar room one end open-ended position department first airflow hole, the eccentric shaft with the output shaft of driving piece is fixed mutually, rocker one end links to each other with the eccentric shaft and the other end stretches out a plurality of respectively from the other end opening of each jar room and stretches into in the jar and with the piston post that the leather cup links to each other.

Furthermore, the plate surface of the valve plate, which is opposite to the opening at one end of the cylinder chamber, is designed to be an inclined surface parallel to the end surface of the packing cup when the swing frame pushes the packing cup to move to the position with the maximum compression stroke, and the first air flow hole is formed in the middle of the inclined surface.

Further, the leather cups are connected into a whole, and the part of the leather cups positioned outside the cylinder body is clamped by the valve plate and the cylinder body.

After the technical scheme is adopted, the embodiment of the utility model provides an at least, following beneficial effect has: the embodiment of the utility model provides a through at the shell with the one end terminal surface of driving piece butt joint is leaned on marginal position to set up suction nozzle and exhaust nozzle, because suction nozzle and exhaust nozzle with the output shaft is parallel and the court deviates from the direction of end cover is extended, on the one hand, does not occupy the horizontal space of whole vacuum aspirator pump, on the other hand, because the shell need with the driving piece butt joint, utilize unnecessary vertical space between shell and the driving piece to design suction nozzle and exhaust nozzle, can utilize driving piece side exterior space to assemble the trachea, the trachea can paste the driving piece lateral wall and extend, can not obviously increase the horizontal size of product to can effectively reduce the product size and make things convenient for the miniaturized design of terminal product.

Drawings

FIG. 1 is a schematic view of an alternative embodiment of a vacuum getter pump according to the present invention in a disassembled state.

Fig. 2 is a schematic perspective view of an alternative embodiment of the vacuum getter pump of the present invention.

Fig. 3 is a schematic cross-sectional view of an optional embodiment of the gas collecting assembly of the vacuum getter pump according to the present invention, along the plane where the central axis of the first inner exhaust hole and the central axis of the second inner exhaust hole are located.

FIG. 4 is a schematic cross-sectional view of an alternative embodiment of a vacuum getter pump of the present invention along the length of the medial plane.

Fig. 5 is a schematic structural view of the vacuum suction pump according to an alternative embodiment of the present invention after assembling the valve plate and the sound insulation plate.

Fig. 6 is a schematic structural view of a valve plate according to an alternative embodiment of the vacuum suction pump of the present invention.

Detailed Description

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

As shown in fig. 1-3, an alternative embodiment of the present invention provides a vacuum getter pump, comprising:

a driving piece 1 with an output shaft 10 protruding outwards arranged on one end surface;

a gas collection assembly 3 driven by the drive member 1, the gas collection assembly 3 comprising:

the shell 30 is butted with one end of the driving piece 1, which is provided with the output shaft 10, and one end of the shell, which is far away from the driving piece 1, is provided with a first airflow hole 30 a;

an end cap 32 hermetically assembled to an outside of an end of the housing 30 where the first air flow hole 30a is formed; and

a baffle 34 having a second air flow hole 34a and covering the first air flow hole 30a of the housing 30, the baffle 34 being disposed in a space between the housing 30 and the end cap 32 and dividing the space into a primary noise reduction chamber 341 communicating with the first air flow hole 30a and a secondary noise reduction chamber 343 communicating with the primary noise reduction chamber 341 through the second air flow hole 34 a;

an end surface of the housing 30, which is abutted against the driving member 1, near an edge portion is further provided with an air inlet nozzle 30b and an air outlet nozzle 30c which are parallel to the output shaft 10 and extend in a direction away from the end cap 32 and are located outside the side surface of the driving member 1, the air inlet nozzle 30b is in sealed communication with an inner cavity of the housing 30, and the air outlet nozzle 30c is connected with the secondary noise reduction chamber 343 through an air outlet passage 301 which is formed inside a wall of the housing 30 and is isolated from the inner cavity of the housing 30.

The embodiment of the utility model provides a through at shell 30 with the one end terminal surface of driving piece 1 butt joint leans on marginal position to set up suction nozzle 30b and exhaust nozzle 30c, because suction nozzle 30b and exhaust nozzle 30c with the output shaft is parallel and face away from the direction of end cover 32 is extended, on the one hand, does not occupy the horizontal space of whole vacuum aspirator pump, and on the other hand, because shell 30 need dock with driving piece 1, utilize unnecessary vertical space design suction nozzle 30b and exhaust nozzle 30c between shell 30 and the driving piece 1, can utilize driving piece 1 side exterior space to assemble the trachea, the trachea can paste the lateral wall extension of driving piece 1, can not obviously increase the horizontal size of product to can effectively reduce the product size, and make things convenient for the miniaturized design of terminal product.

In an optional embodiment of the present invention, as shown in fig. 1-4, the housing 30 includes a bottom shell 302, a cylinder 303 and a valve plate 304 that are sequentially butted from bottom to top, the bottom shell 302 is assembled to the end of the driving member 1 where the output shaft 10 is disposed, the middle portion of the bottom shell 302 is provided with a shaft hole 30d for the output shaft 10 to pass through, the air inlet nozzle 30b and the air outlet nozzle 30c are both disposed at the edge of the bottom shell 302, the first air flow hole 30a is disposed on the valve plate 304, and the valve plate 304 is further inserted with a first umbrella housing 30e for movably covering the hole of the first air flow hole 30a at the side of the sound insulation plate 34. In this embodiment, the housing 30 is formed by the bottom case 302, the cylinder 303 and the valve plate 304, the assembly structure is relatively simple, and the noise generated when the airflow passes through the first airflow hole 30a can be effectively reduced by providing the first umbrella rib 30 e.

In an alternative embodiment of the present invention, as shown in fig. 1-3, the inlet nozzle 30b and the outlet nozzle 30c are located side by side outside the same side of the driving member 1. In this embodiment, the air inlet nozzle 30b and the air outlet nozzle 30c are disposed outside the same side of the driving member 1, and when the air inlet nozzle is used for a specific product and is connected with a corresponding air path structure (for example, an air pipe), the air inlet nozzle and the air outlet nozzle only need to be operated on the same side of the driving member 1, so that the assembly operation is more convenient. It is of course understood that the inlet nozzles 30b and the outlet nozzles 30c may also be arranged outside the drive member 1 on different sides.

In an optional embodiment of the present invention, as shown in fig. 1 and 3, the exhaust channel 301 includes a third noise reduction chamber 303a disposed inside the sidewall of the cylinder 303 and having a first opening 3030 at the top and a first inner exhaust hole 3032 at the bottom, a fourth noise reduction chamber 302a disposed inside the sidewall of the bottom shell 302 and having a second opening 3020 at the top and a bottom communicated with the exhaust nozzle 30c, and a second inner exhaust hole 304a disposed at an edge of the valve plate 304, wherein the second inner exhaust hole 304a is in sealed butt joint with the first opening 3030, and the first inner exhaust hole 3032 is in sealed butt joint with the second opening 3020. In the embodiment, by additionally arranging the three-stage noise reduction chamber 303a on the cylinder block 303, additionally arranging the four-stage noise reduction chamber 302a in the inner cavity of the housing 30 on the bottom shell 302, and additionally arranging the second inner exhaust hole 304a on the valve plate 304, when the airflow in the exhaust space between the valve plate 304 and the end cover 32 enters the three-stage noise reduction chamber 303a from the second inner exhaust hole 304a on the valve plate 304, the third noise reduction can be effectively carried out in the three-stage noise reduction chamber 303 a; then, the air flow enters the four-stage noise reduction chamber 302a through the first inner exhaust hole 3032 of the three-stage noise reduction chamber 303a and the second opening 3020 of the four-stage noise reduction chamber 302a, fourth noise reduction can be effectively performed in the four-stage noise reduction chamber 302a, the air flow is exhausted from the exhaust nozzle 30c at the bottom of the four-stage noise reduction chamber 302a after noise reduction is performed twice, noise during the operation of the vacuum suction pump is effectively reduced, a noise reduction structure does not need to be separately arranged, the assembly is convenient, and the cost is relatively lower.

In specific implementation, as shown in fig. 1, the inner wall of one side of the bottom shell 302 bulges inward to form a thick portion 302b with a thickness greater than the thickness of the other side walls of the bottom shell 302, and the four-stage noise reduction chamber 302a is formed on the thick portion 302 b.

In an alternative embodiment of the present invention, as shown in fig. 1 and 3, the cross section of the three-stage noise reduction chamber 303a is elongated, and the projections of the second inner vent 304a and the first inner vent 3032 on the cross section are respectively located at two opposite ends of the cross section in the length direction. In this embodiment, the projections of the second inner vent 304a and the first inner vent 3032 respectively arranged on the cross section of the third-stage noise reduction chamber 303a are respectively located at the opposite ends in the length direction of the cross section, so that the air flow can completely pass through the third-stage noise reduction chamber 303a when entering the third-stage noise reduction chamber 303a, and the noise reduction effect of the third-stage noise reduction chamber 303a can be effectively improved.

In an alternative embodiment of the present invention, as shown in fig. 5, the second inner vent 304a is disposed on one end of the valve plate 304 and the second inner vent 304a is exposed outside the baffle 34. In this embodiment, the second inner exhaust holes 304a are formed in one end of the valve plate 304, and the second inner exhaust holes 304a are exposed out of the sound insulation plate 34, so that the second inner exhaust holes 304a of the valve plate 304 are located in the fourth-stage noise reduction chamber 302a to communicate the fourth-stage noise reduction chamber 302a with the third-stage noise reduction chamber 303 a.

In an alternative embodiment of the present invention, as shown in fig. 1 and 4, a second umbrella rib 34b for movably covering the opening of the second airflow hole 34a on the side of the end cover 32 is further inserted on the baffle plate 34. In this embodiment, the second umbrella rib 34b covers the air outlet end of the second airflow hole 34a, and the second umbrella rib 34b can also automatically adjust the air exhaust gap according to the air flow rate, so that the noise at different airflow rates is controlled, and the noise reduction effect is effectively improved.

In an optional embodiment of the present invention, as shown in fig. 1 and 4, the cylinder 303 is provided with a plurality of cylinder chambers 303b, both ends of each cylinder chamber 303b are connected and isolated from the three-level noise reduction chamber 303a, the gas collecting assembly 3 further includes a plurality of leather cups 35 assembled in the respective cylinder chambers 303b in a one-to-one manner, a swing frame 36 for driving the leather cups 35, and an eccentric shaft 38 connected to the swing frame 36 to drive the swing frame 36, the first gas flow hole 30a is formed at a position of the valve plate 304 corresponding to an opening at one end of each cylinder chamber 303b, the eccentric shaft 38 is fixed to the output shaft 10 of the driving member 1, one end of the swing frame 36 is connected to the eccentric shaft 38, and the other end of the swing frame 36 extends out a plurality of piston posts 36a respectively extending into the cylinder chambers 303b from openings at the other ends of the respective cylinder chambers 303b and connected to the leather cups 35. In this embodiment, the cup 35 is assembled in the cylinder 303, and the output shaft 30 of the driving member 3 drives the eccentric shaft 38 and the swing frame 36 to drive the cup 35 to perform compression motion, so that the air flow can be efficiently sucked from the air inlet nozzle 30b and discharged from the air outlet nozzle 30 c.

In an alternative embodiment of the present invention, as shown in fig. 6, the plate surface of the valve plate 304, which is opposite to the opening of the cylinder chamber 303b, is designed as an inclined surface 304b parallel to the end surface of the cup 35 when the swing frame 36 pushes the cup 35 to move to the maximum position of the compression stroke, and the first air flow hole 30a is disposed in the middle of the inclined surface 304 b. This embodiment sets up inclined plane 304b on valve plate 304, and when the rocker 36 completely compressed leather cup 35, the terminal surface of rocker 36 can be parallel with inclined plane 304b just, has effectively improved leather cup 35's compression space, and then has improved the utility model discloses vacuum suction pump's vacuum suction volume.

In an alternative embodiment of the present invention, as shown in fig. 1, the cup cups 35 are integrally connected and the portion outside the cylinder 303 is clamped by the valve plate 304 and the cylinder 303. In the embodiment, the leather cup 35 is connected into a whole, the valve plate 304 and the cylinder body 303 are clamped tightly, the leather cup 35 can be directly and integrally assembled into the cylinder body 303, and the assembly is more convenient.

In specific implementation, the driving part 1 can be realized by adopting a motor and other rotary power parts, the air collecting and exhausting of the air collecting assembly 3 can be effectively driven through the rotary motion of the motor 1, and the sealing gasket 12 is arranged between the motor 1 and the bottom shell 302, so that the sealing property is enhanced; in addition, the end cap 32, the valve plate 304, the cylinder 303 and the bottom case 302 are fixedly connected from top to bottom by using the long screws 14.

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 vacuum getter pump comprising:

a driving part of an output shaft which protrudes outwards is arranged on the end face of one end of the driving part;

the shell is butted with one end of the driving piece, which is provided with the output shaft, and one end of the shell, which is far away from the driving piece, is provided with a first airflow hole;

the end cover is assembled outside one end of the shell, which is provided with the first air flow hole, in a sealing way; and

the noise reduction device is characterized in that an end face, close to the edge, of one end, in butt joint with the driving part, of the shell is further provided with an air inlet nozzle and an air outlet nozzle, the air inlet nozzle and the air outlet nozzle are parallel to the output shaft and extend in the direction away from the end cover and are located outside the side face of the driving part, the air inlet nozzle is communicated with an inner cavity of the shell in a sealing mode, and the air outlet nozzle is connected with the secondary noise reduction chamber through an air outlet channel formed inside a shell wall of the shell and separated from the inner cavity of the shell.

2. A vacuum getter pump as in claim 1, wherein the housing includes a bottom shell, a cylinder block and a valve plate, which are connected in sequence, the bottom shell is assembled in a butt joint manner to the end of the driving member where the output shaft is provided, the bottom shell has a shaft hole in the middle for the output shaft to pass through, the intake nozzle and the exhaust nozzle are both disposed at the edge of the bottom shell, the first air flow hole is disposed on the valve plate, and a first umbrella for movably covering the opening of the first air flow hole at the side of the baffle plate is further inserted on the valve plate.

3. A vacuum getter pump as recited in claim 1 or 2, wherein the inlet nozzle and the exhaust nozzle are located side-by-side outside the same side of the drive member.

4. A vacuum getter pump as in claim 2, wherein the exhaust channel comprises a three-stage noise reduction chamber disposed inside the side wall of the cylinder block and having a first opening at the top and a first inner exhaust hole at the bottom, a four-stage noise reduction chamber disposed inside the side wall of the bottom shell and having a second opening at the top and a bottom communicating with the exhaust nozzle, and a second inner exhaust hole disposed at the edge of the valve plate, wherein the second inner exhaust hole is in sealed abutment with the first opening, and the first inner exhaust hole is in sealed abutment with the second opening.

5. A vacuum getter pump according to claim 4, wherein the cross-section of the three-stage noise reduction chamber is elongated, and the projections of the second inner vent and the first inner vent on the cross-section are located at opposite ends of the cross-section in the longitudinal direction.

6. The vacuum getter pump of claim 4, wherein the second inner exhaust holes are formed at one end of the valve plate and the second inner exhaust holes are exposed to the outside of the baffle plate.

7. A vacuum getter pump as recited in claim 1, wherein the baffle further includes a second bead interposed to removably cover the end cap side opening of the second gas flow aperture.

8. The vacuum getter pump according to claim 4, wherein the cylinder body has a plurality of cylinder chambers having two ends connected and isolated from the three-stage noise reduction chamber, the gas collection assembly further comprises a plurality of cups assembled in the respective cylinder chambers in a one-to-one correspondence, a swing frame for driving the cups, and an eccentric shaft connected to the swing frame for driving the swing frame, the valve plate has the first gas flow hole at a position corresponding to an opening at one end of each cylinder chamber, the eccentric shaft is fixed to the output shaft of the driving member, one end of the swing frame is connected to the eccentric shaft, and the other end of the swing frame extends out of a plurality of piston posts extending into the cylinder chambers from openings at the other ends of the respective cylinder chambers and connected to the cups.

9. A vacuum suction pump according to claim 8, wherein a plate surface of the valve plate opened to an end of the cylinder chamber is formed as an inclined surface parallel to an end surface of the cup when the rocker pushes the cup to a maximum position of a compression stroke, and the first air flow hole is provided in a middle portion of the inclined surface.

10. A vacuum getter pump as recited in claim 8, wherein the cup is integral and the portion of the cup exterior to the cylinder is clamped between the valve plate and the cylinder.