CN113685365A

CN113685365A - Air extracting pump

Info

Publication number: CN113685365A
Application number: CN202111238483.5A
Authority: CN
Inventors: 任文杰; 谭文拯; 马钱波
Original assignee: Ningbo Jiayin Electrical And Mechanical Technology Co ltd
Current assignee: Ningbo Jiayin Electrical And Mechanical Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2021-11-23
Anticipated expiration: 2041-10-25
Also published as: CN113685365B

Abstract

The invention relates to an air pump, which comprises a pump shell, centrifugal fan blades, axial flow fan blades and a rotating shaft, wherein the centrifugal fan blades and the axial flow fan blades are arranged in the pump shell, the pump shell is connected and communicated with a vent pipe in the area where the centrifugal fan blades are located along the tangential direction of the pump shell, the rotating shaft is respectively limited with the centrifugal fan blades and the axial flow fan blades in the circumferential direction, so that the rotating shaft can simultaneously drive the centrifugal fan blades and the axial flow fan blades to rotate relative to the pump shell, and the air displacement of the centrifugal fan blades during working is greater than that of the axial flow fan blades during working. The invention can improve the suction and discharge capacity of the air pump when the air pump works integrally so as to meet the use requirement of large discharge capacity; simultaneously, this aspiration pump all sets up axial fan blade and centrifugal fan blade in the pump case, can reduce the volume, and then realizes the miniaturization of this aspiration pump complete machine structure to further satisfy the user demand of this aspiration pump assembly in equipment.

Description

Air extracting pump

Technical Field

The invention relates to the technical field related to flow control, in particular to an air extracting pump.

Background

At present, a centrifugal fan blade is usually arranged in a pump shell of the existing air extracting pump, so that when the air extracting pump works, the air is guided when the centrifugal fan blade rotates, and the air absorbing and exhausting functions of the air extracting pump are realized. However, the air displacement of the air pump with the above structure is small during operation, and the use requirement of high requirement on the air displacement in equipment such as a steaming oven cannot be met.

Disclosure of Invention

In view of the above, it is desirable to provide an air pump for solving the above problems.

The utility model provides an air pump, includes pump case, centrifugal fan blade, axial fan blade and pivot, centrifugal fan blade reaches axial fan blade all set up in the pump case, follow the tangential direction of pump case, the pump case is in connect and communicate in the region at centrifugal fan blade place has the breather pipe, the pivot respectively with centrifugal fan blade reaches axial fan blade circumference is spacing, so that the pivot can drive simultaneously centrifugal fan blade reaches axial fan blade does for the rotation of pump case, wherein the air displacement of centrifugal fan blade during operation is greater than the air displacement of axial fan blade during operation.

In the application, through the reasonable structural arrangement, when the air pump works, the axial flow fan blades can play a role in increasing the wind speed and the suction force, and the centrifugal fan blades can play a role in draining and increasing the wind speed, so that the suction and discharge capacity of the air pump during the whole work is improved, and the use requirement of large discharge capacity is met; simultaneously, this aspiration pump all sets up axial fan blade and centrifugal fan blade in the pump case, can reduce the volume, and then realizes the miniaturization of this aspiration pump complete machine structure to further satisfy the user demand of this aspiration pump assembly in equipment.

In one embodiment, one end of the pump casing facing away from the direction of the centrifugal fan blades is arranged to be an opening structure and forms a ventilation opening of the pump casing, and the axial flow fan blades are arranged in the area of the pump casing where the ventilation opening is located.

It can be understood that, through the above structural arrangement, the determination of the assembly position of the axial flow fan blade on the pump shell is specifically realized, so that the air suction pump can realize the function of large-caliber air suction during working, and the use requirement of high-displacement air suction and discharge during working of the air suction pump is further met.

In one embodiment, a connecting frame is arranged on the inner wall of the pump shell, the axial flow fan blade is rotatably arranged on the connecting frame, and the rotating shaft penetrates through the connecting frame through one end of the centrifugal fan blade and is circumferentially limited with the axial flow fan blade.

It can be understood that, through the structural arrangement of the connecting framework, the assembly connection of the axial flow fan blade on the pump shell is realized, the structure is simplified, and the assembly connection of the axial flow fan blade in the pump shell is convenient.

In one embodiment, the other end of the pump casing is connected with a base, the rotating shaft penetrates through the base and extends into the pump casing, and bearings are respectively arranged between the rotating shaft and the base as well as between the rotating shaft and the connecting framework.

It will be appreciated that with the above arrangement, the two bearings can be used to locate the shaft and thereby ensure concentricity between the shaft and the pump casing.

In one embodiment, a plurality of connecting columns are arranged on the outer wall of the pump shell, a plurality of extending convex plates matched with the connecting columns are arranged on the base, and the pump shell and the base are fixedly connected through the connecting columns and the extending convex plates.

It can be understood that, by the structural arrangement, the assembly connection between the pump shell and the base is realized, so that the assembly connection between the pump shell and the base is facilitated.

In one embodiment, the air pump further includes a plurality of clamp springs, and the clamp springs are clamped on the rotating shaft to axially limit the centrifugal fan blades and the axial flow fan blades on the rotating shaft.

It can be understood that through the structural arrangement of the snap spring, the assembly limit of the centrifugal fan blades and the axial flow fan blades on the rotating shaft is realized, and the structure is simplified, and the assembly is facilitated.

In one embodiment, the air pump further comprises a motor, a motor fixing seat and a switching bearing, wherein the motor and the switching bearing are both mounted on the motor fixing seat, and a rotating shaft part of the motor is circumferentially limited with the rotating shaft through the switching bearing.

It will be appreciated that the above-described arrangement enables the rotary drive of the shaft to be achieved in particular when the suction pump is in operation.

In one embodiment, an adapter bearing pad is disposed between the rotating shaft and the adapter bearing, and the adapter bearing can drive the rotating shaft to rotate through the adapter bearing pad.

It can be understood that the transmission between the rotating shaft and the adapter bearing can be buffered through the structural arrangement of the adapter bearing pad, so that the working noise of the air suction pump is reduced.

In one embodiment, a side surface of the base, which faces away from the pump housing, is provided with a connecting boss, and the motor fixing seat can be mounted on the base through the connecting boss.

It can be understood that through the structural arrangement, the assembly connection between the motor fixing seat and the base is realized, and further, the assembly of the whole air suction pump is realized.

In one embodiment, a first sealing gasket is arranged between the motor fixing seat and the connecting boss and used for assembling and sealing the motor fixing seat and the connecting boss; and a second sealing gasket is arranged between the base and the pump shell and used for assembling and sealing the base and the pump shell.

It can be understood that through the above structure arrangement, the sealing and shock-absorbing effects are particularly achieved between the motor fixing seat and the connecting boss as well as between the base and the pump shell, so that the use requirement of high-speed rotation of the rotating shaft part of the motor during the operation of the air suction pump is met.

Drawings

Fig. 1 is a schematic structural diagram of an air pump according to an embodiment of the present disclosure.

FIG. 2 is an exploded view of a suction pump according to an embodiment of the present application.

Fig. 3 is a schematic view of the construction of a pump casing according to the present application.

Fig. 4 is a schematic structural diagram of the connection skeleton in the present application.

10, a pump shell; 101. an inner wall; 102. an outer wall; 11. a breather pipe; 12. a vent; 13. connecting the framework; 131. a support plate; 132. connecting ribs; 14. a base; 141. an extension convex plate; 142. connecting the bosses; 15. connecting columns; 20. centrifuging the fan blades; 30. axial flow fan blades; 40. a rotating shaft; 41. a bearing; 42. a clamp spring; 50. a motor; 51. a rotating shaft part; 60. a motor fixing seat; 70. switching a bearing; 71. switching the bearing pad; 201. a first gasket; 202. a second gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, an air pump according to an embodiment of the present invention includes a pump housing 10, centrifugal blades 20, axial blades 30, a rotating shaft 40, a motor 50, a motor holder 60, and a transfer bearing 70.

In this embodiment, the centrifugal fan blades 20 and the axial fan blades 30 of this embodiment are both disposed in the pump casing 10, along the tangential direction of the pump casing 10, the pump casing 10 is connected and communicated with the ventilation pipe 11 in the area where the centrifugal fan blades 20 are located, the rotating shaft 40 is circumferentially limited with the centrifugal fan blades 20 and the axial fan blades 30, respectively, so that the rotating shaft 40 can simultaneously drive the centrifugal fan blades 20 and the axial fan blades 30 to rotate relative to the pump casing 10, wherein the exhaust volume when the centrifugal fan blades 20 work is greater than the exhaust volume when the axial fan blades 30 work, so that when the air pump of this embodiment works, the centrifugal fan blades 20 and the axial fan blades 30 can be overlapped, and a large displacement is achieved. It should be noted that the air displacement of the centrifugal fan 20 during operation and the air displacement of the axial fan 30 during operation can be designed according to the number of blades on the centrifugal fan 20 and the axial fan 30 and the angle of each blade, so as to ensure that the air displacement of the centrifugal fan 20 during operation is greater than the air displacement of the axial fan 30 during operation, and avoid turbulence in the pump housing 10 caused by the centrifugal fan 20 not having to guide the air flow.

It can be understood that, during the operation of the air pump of this embodiment, axial flow fan blade 30 can play the effect of increase wind speed and suction, and centrifugal fan blade 20 can play the effect of drainage and increase wind speed to this suction displacement volume when improving the whole work of this air pump, in order to satisfy the user demand of big discharge volume. Meanwhile, the axial flow fan blades 30 and the centrifugal fan blades 20 are arranged in the pump shell 10 of the air pump, so that the size can be reduced, the overall structure of the air pump is miniaturized, and the use requirement of the air pump assembled in equipment is further met.

The end of the pump casing 10 facing away from the centrifugal fan blade 20 in the embodiment is provided with an opening structure and is formed into the air vent 12 of the pump casing 10, and the axial fan blade 30 is arranged in the area of the pump casing 10 where the air vent 12 is located, so that the determination of the assembly position of the axial fan blade 30 on the pump casing 10 is specifically realized, the air suction function with a large caliber can be realized when the air suction pump works, and the use requirement of high-displacement air suction and discharge gas when the air suction pump works is further met. It should be noted that the air vent 12 of the pump casing 10 of the present embodiment is not limited to the one shown in the drawings, and it is obvious to those skilled in the art that the air vent 12 may be formed in a horn shape, or a through hole may be formed in an end portion of the pump casing 10 on the side away from the centrifugal fan blades 20, and the air vent 12 may be formed by the through hole.

Specifically, the pump case 10 of the present embodiment is configured to have a cylindrical structure, and the structure of the pump case 10 is simplified on the basis of satisfying the requirement of rotating the centrifugal fan blades 20 and the axial flow fan blades 30 in the pump case 10.

Next, the inner wall 101 of the pump casing 10 of the present embodiment is provided with a connecting frame 13, the axial flow fan blade 30 is rotatably disposed on the connecting frame 13, and the rotating shaft 40 penetrates the connecting frame 13 through one end of the centrifugal fan blade 20 and is circumferentially limited from the axial flow fan blade 30. That is, the connection frame 13 can support the axial fan 30, so as to implement the assembly and connection of the axial fan 30 on the pump casing 10, and the structure is simplified, thereby facilitating the assembly and connection of the axial fan 30 in the pump casing 10.

Specifically, the connecting frame 13 of the present embodiment includes a supporting plate 131 and a plurality of connecting ribs 132, wherein each connecting rib 132 is respectively connected and fixed with the supporting plate 131 and the inner wall 101 of the pump housing 10, and the axial fan blade 30 is disposed on the supporting plate 131, and the supporting plate 131 of the present embodiment is disposed at the center of the pump housing 10 to meet the use requirement of the supporting plate 131 for supporting the axial fan blade 30. The connecting frame 13 of the present embodiment is formed by injection molding integrally with the pump housing 10.

In this embodiment, the other end of the pump casing 10 of this embodiment is connected to the base 14, the rotating shaft 40 passes through the base 14 and extends into the pump casing 10, wherein bearings 41 are respectively disposed between the rotating shaft 40 and the base 14 and between the rotating shaft 40 and the connecting frame 13, so as to realize the rotating connection between the rotating shaft 40 and the base 14 and between the rotating shaft 40 and the connecting frame 13. It should be noted that the bearing 41 of the present embodiment is configured as a ball bearing, wherein an outer ring of the ball bearing is installed on the base 14 and the connecting frame 13 in a close-fitting manner, and an inner ring of the ball bearing is installed on the rotating shaft 40 in a close-fitting manner, of course, the bearing 41 of the present embodiment is not limited to a roller bearing, and the bearing 41 may be configured as an oil bearing or a roller bearing for those skilled in the art.

It can be understood that the rotating shaft 40 of the present embodiment is specifically installed on the base 14 and the connecting frame 13 through two bearings 41, so as to position the rotating shaft 40 on the pump casing 10, thereby ensuring the coaxiality between the rotating shaft 40 and the pump casing 10, and ensuring that the rotating shaft 40 can realize the rotation movement of the centrifugal fan blades 20 and the axial fan blades 30 relative to the pump casing 10 when the air pump works.

The outer wall 102 of the pump casing 10 of the embodiment is provided with a plurality of connecting columns 15, the base 14 is provided with a plurality of extending convex plates 141 matched with the connecting columns 15, and the pump casing 10 and the base 14 are connected and fixed through the connecting columns 15 and the extending convex plates 141, so that the assembly connection between the pump casing 10 and the base 14 is realized, and the assembly connection between the pump casing 10 and the base 14 is facilitated. It should be noted that each connecting column 15 can be limited and fixed on the corresponding extending convex plate 141 by a connecting piece (not shown), which may be a bolt, and of course, the base 14 and the pump casing 10 of this embodiment may also be connected into a whole.

Specifically, the number of the connecting columns 15 in this embodiment is three, the three connecting columns 15 and the vent pipe 11 are respectively located around the pump casing 10, and the pump casing 10 is assembled on the base 14 through the matching between the three connecting columns 15 and the corresponding extending convex plates 141, so as to ensure the coaxiality when the pump casing 10 and the base 14 are assembled.

The air pump of the embodiment further includes a plurality of clamp springs 42, the clamp springs 42 are clamped on the rotating shaft 40, and are used for axially limiting the centrifugal fan blades 20 and the axial flow fan blades 30 on the rotating shaft 40, so that the assembly limitation of the centrifugal fan blades 20 and the axial flow fan blades 30 on the rotating shaft 40 is realized, the structure is simplified, and the assembly is facilitated.

Specifically, the rotating shaft 40 of the present embodiment is provided with a clamp spring 42 respectively clamped on two sides of the centrifugal fan blade 20, so as to achieve axial position limitation of the centrifugal fan blade 20 on the rotating shaft 40, and the rotating shaft 40 is provided with a clamp spring 42 clamped on one side of the axial fan blade 30 away from the connecting framework 13, so as to limit axial position of the axial fan blade 30 on the rotating shaft 40.

In this embodiment, the motor 50 and the adapting bearing 70 of this embodiment are both mounted on the motor fixing base 60, wherein the rotating shaft 51 of the motor 50 is axially limited by the adapting bearing 70 and the rotating shaft 40, so that when the air suction pump works, the motor 50 drives the rotating shaft 40 to rotate through the adapting bearing 70, and the rotating shaft 40 drives the centrifugal fan blades 20 and the axial fan blades 30 to rotate at a high speed in the pump housing 10 while rotating, and realizes air suction and exhaust.

In this embodiment, the adapting bearing pad 71 is disposed between the rotating shaft 40 and the adapting bearing 70, and the adapting bearing 70 can drive the rotating shaft 40 to rotate through the adapting bearing pad 71, so that the adapting bearing pad 71 can buffer the transmission between the rotating shaft 40 and the adapting bearing 70, thereby reducing the working noise of the air pump. It should be noted that the adapter bearing pad 71 of the present embodiment has wear-resistant and high-temperature-resistant properties, and may specifically be a teflon sleeve.

Secondly, a side of the base 14 away from the pump housing 10 of the embodiment is provided with a connecting boss 142, and the motor fixing base 60 can be installed on the base 14 through the connecting boss 142, so as to specifically realize the assembling connection between the motor fixing base 60 and the base 14. It should be noted that, in the present embodiment, the motor fixing base 60 and the connecting boss 142 of the base 14 are connected and fixed by screws (not shown).

In addition, it should be noted that, a first sealing gasket 201 is disposed between the motor fixing seat 60 and the connecting boss 142 in the embodiment, and is used for assembling and sealing the motor fixing seat 60 and the connecting boss 142; and a second sealing gasket 202 is arranged between the base 14 and the pump shell 10 for assembling and sealing the base 14 and the pump shell 10. The first sealing gasket 201 and the second sealing gasket 202 are structurally arranged to seal and absorb shock between the motor fixing seat 60 and the connecting boss 142, and between the base 14 and the pump shell 10, so as to meet the use requirement of high-speed rotation of the rotating shaft 51 on the motor 50 when the air pump works.

The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides an air pump, its characterized in that, includes pump case (10), centrifugal fan blade (20), axial fan blade (30) and pivot (40), centrifugal fan blade (20) reach axial fan blade (30) all set up in pump case (10), follow the tangential direction of pump case (10), pump case (10) are in connect and communicate in the region at centrifugal fan blade (20) place has breather pipe (11), pivot (40) respectively with centrifugal fan blade (20) reach axial fan blade (30) circumference is spacing, so that pivot (40) can drive simultaneously centrifugal fan blade (20) reach axial fan blade (30) do for the rotation of pump case (10), wherein the air displacement of centrifugal fan blade (20) during operation is greater than the air displacement of axial fan blade (30) during operation.

2. The extraction pump according to claim 1, characterised in that the pump housing (10) is provided with an open structure at its end facing away from the centrifugal fan blades (20) and forms a ventilation opening (12) for the pump housing (10), the axial fan blades (30) being provided in the region of the pump housing (10) in which the ventilation opening (12) is located.

3. The air extraction pump according to claim 1, characterized in that a connecting framework (13) is arranged on an inner wall (101) of the pump shell (10), the axial flow fan blade (30) is rotatably arranged on the connecting framework (13), and the rotating shaft (40) penetrates through the connecting framework (13) through one end of the centrifugal fan blade (20) and is circumferentially limited with the axial flow fan blade (30).

4. The air extraction pump according to claim 3, characterized in that a base (14) is connected to the other end of the pump housing (10), the rotating shaft (40) penetrates through the base (14) and extends into the pump housing (10), and bearings (41) are respectively arranged between the rotating shaft (40) and the base (14) and between the rotating shaft and the connecting framework (13).

5. The air extraction pump according to claim 4, characterized in that a plurality of connecting columns (15) are arranged on the outer wall (102) of the pump shell (10), a plurality of extending convex plates (141) matched with the connecting columns (15) are arranged on the base (14), and the pump shell (10) and the base (14) are fixedly connected through the connecting columns (15) and the extending convex plates (141).

6. The air pump according to claim 1, further comprising a plurality of snap springs (42), wherein the snap springs (42) are snapped on the rotating shaft (40) to axially limit the centrifugal fan blades (20) and the axial fan blades (30) on the rotating shaft (40).

7. The air suction pump according to claim 4, further comprising a motor (50), a motor fixing seat (60) and a transfer bearing (70), wherein the motor (50) and the transfer bearing (70) are both mounted on the motor fixing seat (60), and a rotating shaft portion (51) of the motor (50) is circumferentially limited with the rotating shaft (40) through the transfer bearing (70).

8. The extraction pump according to claim 7, characterised in that an adapter bearing pad (71) is arranged between the rotary shaft (40) and the adapter bearing (70), and the adapter bearing (70) can drive the rotary shaft (40) to rotate via the adapter bearing pad (71).

9. The extraction pump according to claim 7, characterized in that a connection boss (142) is provided on a side of the base (14) facing away from the pump housing (10), and the motor holder (60) can be mounted on the base (14) via the connection boss (142).

10. The air extracting pump according to claim 9, characterized in that a first sealing gasket (201) is arranged between the motor fixing seat (60) and the connecting boss (142) for assembling and sealing the motor fixing seat (60) and the connecting boss (142); and a second sealing gasket (202) is arranged between the base (14) and the pump shell (10) and used for assembling and sealing the base (14) and the pump shell (10).