CN217652893U

CN217652893U - Micropump with bearing support type eccentric wheel transmission structure

Info

Publication number: CN217652893U
Application number: CN202221653305.9U
Authority: CN
Inventors: 蒲小勤
Original assignee: Chengdu Ruihai Fluid Technology Co ltd
Current assignee: Chengdu Ruihai Fluid Technology Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-10-25
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a micropump with bearing support formula eccentric wheel transmission structure, which comprises a pump body, the pump body is connected with the motor, the output shaft end of motor is connected with the eccentric wheel, the side of keeping away from the motor of eccentric wheel is equipped with the eccentric shaft, eccentric shaft connection has rather than the vertically connecting rod, the eccentric shaft end of keeping away from of connecting rod is equipped with the diaphragm, the diaphragm is installed on the pump body, be equipped with two gas pockets on the pump body, the periphery cover of eccentric wheel is equipped with at least one first bearing, the outer periphery cover of first bearing is equipped with the bearing frame, be equipped with the air cavity on the pump body, the diaphragm is installed in the air cavity, two gas pockets all communicate with the bottom of air cavity, the diaphragm top is equipped with the diaphragm gland, the diaphragm gland is connected with the pump body. The utility model has the advantages that: through the arrangement of the first bearing and the bearing seat, the load force generated by the diaphragm during movement can be borne, the stress rigidity of an output shaft, an eccentric wheel and an eccentric shaft of the motor is improved, the service life is prolonged, the service life of the motor is prolonged, and the service life of the whole micro-pump is further prolonged.

Description

Micropump with bearing support type eccentric wheel transmission structure

Technical Field

The utility model relates to a micropump technical field specifically is a micropump with bearing support formula eccentric wheel transmission structure.

Background

Micropumps are devices that can control and manipulate small volumes of fluid, and any type of miniature pump is generally referred to as a micropump. Diaphragm micropumps drive fluids using repeated actuation of a diaphragm located above a main pump valve with a main valve located between an inlet and an outlet microvalve. When the diaphragm is deflected upward by some driving force, fluid is drawn into the inlet valve and into the main pump valve, then the diaphragm is lowered, allowing fluid to be expelled through the outlet valve, and the process is repeated to continuously pump fluid. The traditional micro pump driving structure consists of a motor, an eccentric wheel, a connecting rod and a diaphragm. The load that the diaphragm motion produced is born by the bearing of motor completely to diaphragm axis is far away from the motor bearing, and diaphragm load power can enlarge to the bearing of motor through the lever, makes the bearing life-span of motor shorter, in case the bearing wearing and tearing, then need change the motor, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a micropump with bearing support formula eccentric wheel transmission structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a micropump with bearing support formula eccentric wheel transmission structure, includes the pump body, the pump body is connected with the motor, the output shaft end of motor is connected with the eccentric wheel, the side of keeping away from the motor of eccentric wheel is equipped with the eccentric shaft, eccentric shaft connection has rather than perpendicular connecting rod, the eccentric shaft end of keeping away from of connecting rod is equipped with the diaphragm, the diaphragm is installed on the pump body, be equipped with two gas pockets on the pump body, the periphery cover of eccentric wheel is equipped with at least one first bearing, the outer periphery cover of first bearing is equipped with the bearing frame, be equipped with the air cavity on the pump body, the diaphragm is installed in the air cavity, two the gas pocket all communicates with the bottom of air cavity, the diaphragm top is equipped with the diaphragm gland, the diaphragm gland is connected with the pump body.

Further preferably, a motor base is sleeved on the motor, the bearing seat is installed on the motor base, and a mounting hole for the first bearing to penetrate is formed in the bearing seat.

Further preferably, the motor base is fixed on the pump body, a first mounting groove is arranged below the pump body, and the motor base is in threaded connection with the first mounting groove.

Preferably, the bearing seat is fixed on the pump body, and the bearing seat is provided with a mounting hole for the first bearing to penetrate.

Further preferably, the output shaft of the motor is inserted into the eccentric wheel, and a plurality of locking screws are connected between the output shaft of the motor and the eccentric wheel.

Preferably, a connecting seat is sleeved on the outer side of the eccentric shaft, a step hole is formed in the connecting seat, a second bearing is arranged in the step hole, and the second bearing is sleeved on the eccentric shaft.

Further preferably, a sleeve is connected to the lower portion of the connecting seat and sleeved on the connecting rod.

Preferably, a second mounting groove is formed in the position, corresponding to the air cavity, below the pump body, two air valve holes communicated with the air cavity are formed in the groove bottom of the second mounting groove, and the two air valve holes are respectively and correspondingly connected with the two air holes.

Further preferably, the second mounting groove inner cover is provided with a cover plate, and the two air valve holes are provided with one-way valves.

Has the beneficial effects that: the utility model discloses a micropump with bearing support formula eccentric wheel transmission structure, through the setting of first bearing and bearing frame, the first bearing forms the support to the eccentric wheel, can undertake the loading force that the diaphragm produced when moving, makes output shaft, eccentric wheel and the eccentric shaft of motor can bear great radial force and axial force when rotating, improves atress rigidity, increase of service life, realizes prolonging the complete machine life-span of this micropump; the bearing seat supports the first bearing, the stress rigidity of the first bearing is improved, the load force borne by the first bearing is borne, the load distribution of a transmission system is optimized, the stable structure of the first bearing is ensured, the abrasion is reduced, the service lives of the first bearing, an output shaft of a motor, an eccentric wheel and an eccentric shaft are further prolonged, the service life of the motor is prolonged, and the service life of the whole micropump is further prolonged; the bearing seat can be installed on the motor base and also can be fixed on the pump body, so that the bearing seat can be installed conveniently according to actual needs, and the applicability of the bearing seat installation is improved.

Drawings

Fig. 1 is an exploded schematic view of a micropump having a bearing supported eccentric transmission structure according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structural view of a micropump with a bearing supported eccentric transmission structure according to an embodiment of the present invention;

fig. 3 is a schematic partial sectional view of a micropump with a bearing supported eccentric transmission structure according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a micropump with a bearing supported eccentric transmission structure according to an embodiment of the present invention;

fig. 5 is a schematic top view of a micropump with a bearing supported eccentric transmission structure according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a pump body according to an embodiment of the present invention.

Reference numerals: 1-a pump body, 2-a motor, 3-an eccentric wheel, 4-an eccentric shaft, 5-a connecting rod, 6-a diaphragm, 7-a motor base, 8-a bearing seat, 9-a first bearing, 10-an air cavity, 11-a diaphragm gland, 12-an air hole, 13-a cover plate, 14-a mounting hole, 15-a locking screw, 16-a connecting seat, 17-a stepped hole, 18-a second bearing, 19-a sleeve, 20-a first mounting groove, 21-a second mounting groove and 22-an air valve hole.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-6, a micropump with a bearing support type eccentric wheel transmission structure is a vacuum pump and comprises a pump body 1, wherein the pump body 1 is connected with a motor 2, the output shaft end of the motor 2 is connected with an eccentric wheel 3, the side surface of the eccentric wheel 3, which is far away from the motor 2, is provided with an eccentric shaft 4, the eccentric shaft 4 is connected with a connecting rod 5 which is perpendicular to the eccentric shaft 4, the end of the connecting rod 5, which is far away from the eccentric shaft 4, is provided with a diaphragm 6, the diaphragm 6 is installed on the pump body 1, and the pump body 1 is provided with two air holes 12. Wherein, two gas pockets 12 are air inlet and venthole respectively, and motor 2 is used for driving eccentric wheel 3 to rotate, drives eccentric shaft 4 of connecting on it and does eccentric rotation, and through the eccentric rotation of eccentric shaft 4, and then drives connecting rod 5 up-and-down motion and swing back and forth, and then drives diaphragm 6 and does up-and-down motion and swing back and forth, can be through the air inlet suction, discharge from the venthole, realize the evacuation. The circumferential surface of the eccentric wheel 3 is sleeved with at least one first bearing 9, the outer circumferential surface of the first bearing 9 is sleeved with a bearing seat 8, the eccentric wheel 3 is supported by the first bearing 9, the first bearing 9 is close to the joint of the connecting rod 5 and the eccentric shaft 4 and can bear the load force generated by the diaphragm 6 during movement, so that the output shaft of the motor 2, the eccentric wheel 3 and the eccentric shaft 4 can bear larger radial force and axial force during rotation, the stress rigidity of the output shaft of the motor 2, the eccentric wheel 3 and the eccentric shaft 4 is improved, the service lives of the output shaft of the motor 2, the eccentric wheel 3 and the eccentric shaft 4 are prolonged, and further the service life of the whole micro-pump is prolonged. Meanwhile, the bearing seat 8 is used for supporting the first bearing 9, so that the stress rigidity of the first bearing 9 is improved, the first bearing 9 is born with load force, the stable structure of the first bearing 9 is ensured, the abrasion of the first bearing 9 is reduced, the service lives of the first bearing 9, the output shaft of the motor 2, the eccentric wheel 3 and the eccentric shaft 4 are prolonged, the service life of the motor is prolonged, and the service life of the whole micropump is prolonged.

In the application, an air cavity 10 is arranged on a pump body 1, a diaphragm 6 is arranged in the air cavity 10, the air storage is realized through the air cavity 10, the size of a sealed space formed by the air cavity 10 and the diaphragm 6 is changed through the diaphragm 6, the continuous air suction and exhaust are realized, and the purpose of vacuumizing is realized; the two air holes 12 are communicated with the bottom of the air cavity 10, the two air holes 12 are respectively an air inlet hole and an air outlet hole, a second mounting groove 21 is arranged below the pump body 1 and corresponds to the position of the air cavity 10, two air valve holes 22 communicated with the air cavity 10 are arranged at the bottom of the second mounting groove 21, the two air valve holes 22 are respectively and correspondingly connected with the two air holes 12, and the two air valve holes 22 are respectively provided with a one-way valve, so that the control of the air flow directions of the air inlet hole and the air outlet hole is realized, the air inlet hole can only admit air, and the air outlet hole can only discharge air; the second mounting groove 21 is convenient for the processing of two air valve holes 22 and the mounting of a one-way valve, and the processing difficulty of the pump body is reduced.

In this application, 6 tops of diaphragm are equipped with diaphragm gland 11, and diaphragm gland 11 is connected with the pump body 1, realizes diaphragm 6's installation through diaphragm gland 11, guarantees that diaphragm 6 and air cavity 10 can form sealed space, and can not appear gas leakage phenomenon along with diaphragm 6's up-and-down motion and luffing motion.

In this application, the cover is equipped with motor cabinet 7 on the motor 2, and bearing frame 8 both can install on motor cabinet 7, also can be fixed in on the pump body 1, as long as guarantee that bearing frame 8 is a fixed bearing structure, can realize bearing 9, undertake first bearing 9 and receive the loading force, guarantee first bearing 9's stable in structure, be convenient for install as required, realize the diversification of bearing frame 8 installation. The bearing seat 8 is provided with a mounting hole 14 for mounting the first bearing 9, wherein the depth of the mounting hole 14 is the thickness dimension of the plurality of first bearings 9, so that the mounting of one or more bearings is facilitated.

In this application, motor cabinet 7 is fixed in on the pump body 1, the installation of the motor cabinet 7 of being convenient for, and the below of the pump body 1 is equipped with first mounting groove 20, through first mounting groove 20 be convenient for with the spiro union of motor cabinet 7, can reduce the weight of the pump body 1 simultaneously, realize the lightweight of micropump.

In this application, the output shaft of motor 2 inserts in eccentric wheel 3 and be connected with a plurality of locking screw 15 with between the eccentric wheel 3, realizes the output shaft of motor 2 and eccentric wheel 3's fixed through locking screw 15.

In this application, the outside cover of eccentric shaft 4 is equipped with connecting seat 16, is equipped with step hole 17 on connecting seat 16, is equipped with second bearing 18 in the step hole 17, and second bearing 18 covers on locating eccentric shaft 4. Through the connection of the second bearing 18 and the eccentric shaft 4, and the clamping of the second bearing 18 in the step hole 17, the movement of the eccentric shaft 4 in the axial direction can be limited, and the eccentric shaft 4 and the eccentric wheel 3 are prevented from shaking in the left-right direction; meanwhile, the second bearing 18 ensures that the eccentric shaft 4 is stably connected with the connecting seat 16, the eccentric shaft 4 is rotatably connected with the connecting rod 5, and the connecting seat 16 can be matched with the motion of the eccentric shaft 4 and the connecting rod 7.

In this application, the below of connecting seat 16 is connected with sleeve 19, and on connecting rod 5 was located to sleeve 19 cover, realized being connected of connecting seat 16 and connecting rod 5, and then realized being connected of eccentric shaft 4 and connecting rod 5.

In this application, the second mounting groove 21 inner cup is equipped with apron 13 for two air valve openings 22 are sealed, guarantee that two air valve openings 22 correspond two gas pocket intercommunications respectively.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. The micropump with the bearing support type eccentric wheel transmission structure comprises a micropump body (1), wherein a motor (2) is connected to the micropump body (1), an eccentric wheel (3) is connected to an output shaft end of the motor (2), an eccentric shaft (4) is arranged on the side, far away from the motor (2), of the eccentric wheel (3), a connecting rod (5) perpendicular to the eccentric shaft (4) is connected to the eccentric shaft (4), a diaphragm (6) is arranged at the end, far away from the eccentric shaft (4), of the connecting rod (5), the diaphragm (6) is installed on the micropump body (1), and two air holes (12) are formed in the micropump body (1) and is characterized in that: the diaphragm pump is characterized in that at least one first bearing (9) is sleeved on the circumferential surface of the eccentric wheel (3), a bearing seat (8) is sleeved on the outer circumferential surface of the first bearing (9), an air cavity (10) is arranged on the pump body (1), the diaphragm (6) is installed in the air cavity (10), the two air holes (12) are communicated with the bottom of the air cavity (10), a diaphragm gland (11) is arranged above the diaphragm (6), and the diaphragm gland (11) is connected with the pump body (1).

2. The micropump having a bearing supported eccentric driving structure according to claim 1, wherein: the motor (2) is sleeved with a motor base (7), a bearing seat (8) is installed on the motor base (7), and a mounting hole (14) for the first bearing (9) to penetrate is formed in the bearing seat (8).

3. The micropump having a bearing supported eccentric driving structure according to claim 2, wherein: the motor cabinet (7) are fixed on the pump body (1), a first mounting groove (20) is arranged below the pump body (1), and the motor cabinet (7) is in threaded connection with the first mounting groove (20).

4. A micropump having a bearing supported eccentric drive configuration according to claim 1, wherein: the bearing seat (8) is fixed on the pump body (1), and a mounting hole (14) for the first bearing (9) to penetrate is formed in the bearing seat (8).

5. A micropump having a bearing supported eccentric drive configuration according to claim 1, wherein: an output shaft of the motor (2) is inserted into the eccentric wheel (3) and a plurality of locking screws (15) are connected between the output shaft and the eccentric wheel (3).

6. The micropump having a bearing supported eccentric driving structure according to claim 1, wherein: the outer side of the eccentric shaft (4) is sleeved with a connecting seat (16), a step hole (17) is formed in the connecting seat (16), a second bearing (18) is arranged in the step hole (17), and the eccentric shaft (4) is sleeved with the second bearing (18).

7. The micropump having a bearing supported eccentric drive structure according to claim 6, wherein: a sleeve (19) is connected to the lower portion of the connecting seat (16), and the sleeve (19) is sleeved on the connecting rod (5).

8. A micropump having a bearing supported eccentric drive configuration according to claim 1, wherein: the position of the lower part of the pump body (1) corresponding to the air cavity (10) is provided with a second mounting groove (21), the bottom of the second mounting groove (21) is provided with two air valve holes (22) communicated with the air cavity (10), and the two air valve holes (22) are respectively and correspondingly connected with the two air holes (12).

9. A micropump having a bearing supported eccentric drive configuration as claimed in claim 8, wherein: the second mounting groove (21) is internally covered with a cover plate (13), and the two air valve holes (22) are all provided with one-way valves.