CN212337570U

CN212337570U - Mechanical vacuum pump

Info

Publication number: CN212337570U
Application number: CN201922431636.2U
Authority: CN
Inventors: 黄海洲
Original assignee: Zhejiang Haizhou Packaging Machinery Co ltd
Current assignee: Zhejiang Haizhou Packaging Machinery Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-01-12
Anticipated expiration: 2029-12-30

Abstract

The utility model belongs to the technical field of vacuum apparatus, refer in particular to a mechanical vacuum pump, which comprises a pump body, the pump cover, and be used for controlling the driving piece of the pump body and pump cover work, the internal cavity that is formed with of pump, pump body bottom is formed with the aspirating hole and the exhaust hole that link up the cavity, be formed with the link up pump cover on the pump cover respectively, and with the aspirating hole, exhaust hole position alignment's the through-hole of bleeding, exhaust through-hole, install the activity piece that is used for controlling the through-hole of bleeding and exhaust hole switching between the pump body and the pump cover respectively, mutual noninterference between the activity piece, pump body bottom is inwards sunken, be formed with the subregion recess, the subregion recess is kept apart completely aspirating hole and exhaust hole, the pump cover upper end is outwards protruding, be formed with. The vacuum pump saves the manufacturing cost and improves the stability and efficiency of the vacuum pump during working.

Description

Mechanical vacuum pump

Technical Field

The utility model belongs to the technical field of vacuum apparatus, a mechanical vacuum pump is related to.

Background

The vacuum pump is a device capable of pumping air from the inside of the container so as to enable the inside of the container to be vacuum, and the device is widely applied to industries such as metallurgy, chemical engineering, food, electronic coating and the like.

The CN201420576716.1 discloses a mechanical vacuum pump, which comprises a pump body, a pump cover and a power mechanism, wherein the pump body is provided with an inner hole, a piston plate is arranged in the inner hole, the power mechanism is used for driving the piston plate to move up and down in the inner hole, the bottom of the pump body is provided with an air suction hole and an air exhaust hole which are communicated with the inner hole, the pump cover is arranged at the bottom of the pump body, and the pump cover is provided with an air suction through hole and an air exhaust through hole which are respectively corresponding to the; and a reversing sheet which enables the air suction hole to be closed and the air exhaust hole to be opened when the piston sheet moves upwards and enables the air suction hole to be closed and the air exhaust hole to be opened when the piston sheet moves downwards is arranged between the pump cover and the pump body.

Above-mentioned vacuum pump realizes opening and closing of aspirating hole, exhaust hole through single commutator segment, however in order to prevent that gas from revealing, the commutator sheet body of adoption is long-pending big, has almost covered whole pump cover, has not only wasted the material, has still reduced the vacuum pump simultaneously at every turn bleed with the gaseous circulation of exhaust time, has reduced the work efficiency of vacuum pump promptly.

Aiming at the problems, the vacuum pump which can save materials, does not influence the normal circulation of gas and can work efficiently can be designed.

Disclosure of Invention

The utility model discloses according to the above-mentioned problem, a mechanical vacuum pump is provided, this vacuum pump possesses not only practiced thrift manufacturing cost, and can extract air and exhaust work high-efficiently.

The purpose of the utility model is realized like this:

a mechanical vacuum pump comprises a pump body, a pump cover and a driving piece for controlling the pump body and the pump cover to work, wherein a cavity is formed in the pump body, an air suction hole and an air exhaust hole which penetrate through the cavity are formed at the bottom of the pump body, an air suction through hole and an air exhaust through hole which penetrate through the pump cover and are aligned with the air suction hole and the air exhaust hole are formed in the pump cover respectively, movable pieces for controlling the opening and the closing of the air suction through hole and the air exhaust hole are installed between the pump body and the pump cover respectively and are not interfered with each other, the bottom of the pump body is sunken inwards to form a partition groove, the air suction hole and the air exhaust hole are completely isolated by the partition groove, the upper end of the pump cover is protruded outwards to form a partition stop block which can be matched with the partition groove, the air suction through hole and the air exhaust through hole are completely isolated by the partition stop, the swinging piece is connected with the driving piece;

when the driving piece controls the swinging piece to swing upwards corresponding to one end of the air exhaust hole, the air exhaust hole is opened, the air exhaust through hole is filled with air, the movable piece corresponds to one end of the air exhaust through hole to swing upwards, when the driving piece controls the swinging piece to swing upwards corresponding to one end of the air exhaust hole, the movable piece corresponds to one end of the air exhaust through hole to swing downwards, the air exhaust hole is opened, and the air exhaust through hole is exhausted.

Further, the movable sheet includes the movable part that is used for hiding respectively bleed through-hole and exhaust hole, and is used for consolidating the fixed part of movable sheet, the pump cover upper end be formed with the supporting shoe that the fixed part position was aligned, the bottom of the pump body be formed with fixed part matched with presss from both sides tight groove.

Furthermore, an inclined air exhaust guide block is formed in the air exhaust hole, and the movable part at the lower end of the air exhaust hole completely covers the air exhaust hole.

Furthermore, the pump cover upper end is formed with the protruding body of boundary, and the protruding body of boundary upwards extends and is injectd first holding tank, the subregion dog is located first holding tank middle part, and will first holding tank divide into and is used for holding the first district of bleeding of bleed-off through-hole, and be used for holding the first exhaust area of bleed-off through-hole, pump body bottom form undercut and form can with first holding tank matched with second holding tank, the subregion recess is located second holding tank middle part, and will the second holding tank divide into and is used for holding the second district of bleeding of bleed-off hole, and be used for holding the second exhaust area of exhaust hole.

Further, an exhaust pipe communicated with the exhaust through hole and an exhaust pipe communicated with the exhaust through hole are formed at the lower end of the pump cover respectively.

Further, the cavity is internally provided with a linkage rod connected with the driving piece, the lower end of the linkage rod is provided with a linkage wheel, the bottom of the linkage wheel is provided with a linkage groove, the swinging piece is provided with a connecting groove capable of containing the linkage wheel, and a convex circle matched with the linkage groove is formed in the connecting groove.

Further, the driving piece includes the rotation motor, and can by the eccentric gear of rotation motor control, install the axis of rotation that outwards stretches out in the rotation motor, install in the axis of rotation with the drive gear of eccentric gear engaged with, be formed with the skew on the eccentric gear the eccentric wheel at eccentric gear center, the gangbar upper end is stretched out the cavity is outside to be formed with can with eccentric wheel matched with presss from both sides tight frame.

Furthermore, a filling ring sleeved on the outer ring of the eccentric wheel is installed on the eccentric gear, and the filling ring is tightly attached to the inner wall of the clamping frame.

Furthermore, a shell capable of containing the eccentric gear, the transmission gear and the clamping frame is installed at the upper end of the pump body, and a motor mounting disc used for fixing the rotating motor is formed on the shell.

Furthermore, the lower end of the motor mounting disc is also provided with a connecting through hole penetrating through the shell, the middle part of the eccentric gear is provided with a central through hole aligned with the connecting through hole, and a central shaft communicated with the connecting through hole and the central through hole is mounted on the eccentric gear.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. but install independent work respectively on bleed through-hole and the exhaust through-hole the movable plate, the volume of movable plate just in time satisfies this vacuum pump and bleeds and the carminative demand, has not only practiced thrift the material, has also improved the circulation speed when gaseous business turn over this vacuum pump at every turn, has improved the work efficiency of this vacuum pump.

2. This vacuum pump will bleed and exhaust work area cuts apart completely, guarantees that the condition of mutual interference can not appear in the work of bleeding and the exhaust of this vacuum pump, avoids the work of this vacuum pump to appear the confusion, has improved the fault-tolerant rate in this vacuum pump working process.

3. The supporting block and the clamping groove firmly fix the movement between the pump body and the pump cover, so that the movable sheet is always fixed in the original position in the working process, the position deviation is avoided, and the stability of the vacuum pump in the working process is improved.

4. The driving piece adopts a gear meshing mode to carry out transmission, so that the air pumping and exhausting work of the vacuum pump is realized, the vacuum pump can adapt to the wide work efficiency requirement, and the vacuum pump can stably work for a long time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view illustrating an exploded state of the vacuum pump.

Fig. 2 is a first perspective view of the vacuum pump.

Fig. 3 is a second perspective view of the vacuum pump.

Fig. 4 is a perspective view showing the internal structure of the vacuum pump.

Fig. 5 is a perspective view of the pump body.

Fig. 6 is a perspective view of a pump cap.

Fig. 7 is a perspective view of the movable plate.

FIG. 8 is a perspective view of the linkage rod

1-pump body, 11-suction hole, 111-suction guide block, 12-exhaust hole, 13-clamping groove, 14-second receiving groove, 141-second suction area, 142-second exhaust area, 15-partition groove, 2-pump cover, 21-suction through hole, 22-exhaust through hole, 23-support block, 24-boundary convex body, 25-first receiving groove, 251-first suction area, 252-second exhaust area, 26-partition stopper, 3-driving piece, 31-rotating motor, 311-rotating shaft, 32-eccentric gear, 321-eccentric wheel, 322-central through hole, 323-central shaft, 33-transmission gear, 34-filling ring, 4-movable piece, 41-movable part, 42-fixed part, 5-swinging piece, 51-connecting groove, 511-convex circle, 6-linkage rod, 61-linkage wheel, 611-linkage groove, 62-clamping frame, 7-shell, 71-motor mounting disc and 72-connecting through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be further described in the following with reference to specific embodiments thereof,

as shown in fig. 1-8, a mechanical vacuum pump includes a pump body 1, a pump cover 2, and a driving member 3 for controlling the pump body 1 and the pump cover 2 to work, wherein a cavity 10 is formed in the pump body 1, an air exhaust hole 11 and an air exhaust hole 12 penetrating the cavity 10 are formed at the bottom of the pump body 1, an air exhaust through hole 21 and an air exhaust through hole 22 penetrating the pump cover 2 and aligned with the air exhaust hole 11 and the air exhaust hole 12 are respectively formed on the pump cover 2, a movable plate 4 for controlling the opening and closing of the air exhaust through hole 21 and the air exhaust hole 12 is respectively installed between the pump body 1 and the pump cover 2, the movable plate 4 is not interfered with each other, the bottom of the pump body 1 is recessed inwards to form a partition groove 15, the partition groove 15 completely separates the air exhaust hole 11 from the air exhaust hole 12, the upper end of the pump cover 2 is protruded outwards to form a partition 26 capable of, the partition block 26 completely isolates the air exhaust through hole 21 from the air exhaust through hole 22, the cavity 10 is also internally provided with a swinging piece 5 for controlling the opening and closing of the air exhaust hole 11 and the air exhaust hole 12, and the swinging piece 5 is connected with the driving piece 3. Specifically, when the driving member 3 controls one end of the oscillating member 5 corresponding to the air pumping hole 11 to oscillate upwards, the air pumping hole 11 is opened, and at this time, the external air pressure is greater than the internal air pressure of the vacuum pump, the vacuum pump is used for pumping air to the container, the air pumping through hole 21 is used for air intake, one end of the movable sheet 4 corresponding to the air pumping through hole 21 swings upwards, the air further enters the pump body 1 through the air pumping hole 11, when the driving member 3 controls one end of the swinging member 5 corresponding to the exhaust hole 12 to swing upwards, one end of the movable sheet 4 corresponding to the exhaust through hole 22 swings downwards, the exhaust hole 12 is opened, the internal air pressure of the vacuum pump is larger than the external air pressure, the vacuum pump starts to exhaust, and gas enters the pump cover 2 from the pump body 1 through the exhaust hole 12 and finally exits from the exhaust through hole 22. The partition groove 15 and the partition stopper 26 completely isolate the respective working areas of the movable plates 4, so that the movable plates 4 are ensured to be subjected to complementary interference in the working process, and the working stability of the vacuum pump is improved.

As shown in fig. 5 to 7, the movable plate 4 includes a movable portion 41 for covering the air exhaust through hole 21 and the air exhaust hole 12, respectively, and a fixed portion 42 for reinforcing the movable plate 4, the pump cover 2 is formed at an upper end thereof with a support block 23 aligned with the fixed portion 42, and the pump body 1 is formed at a bottom thereof with a clamping groove 13 for engaging with the fixed portion 42. Specifically, the movable plate 4 supports the fixed portion 42 through the supporting block 23, so that the movable portion 41 is respectively parallel to the upper end of the air exhaust through hole 21 and the lower end of the exhaust hole 12, and the clamping groove 13 clamps the fixed portion 42, so that the movable plate 4 is fastened between the pump body 1 and the pump cover 2, and the movable plate 4 is prevented from being displaced in the working process.

As shown in fig. 4 to 5, an inclined air-extracting guide 111 is formed in the air-extracting hole 11, and the movable portion 41 at the lower end of the air-extracting hole 12 completely covers the air-extracting hole 12. Specifically, this vacuum pump carries out the work of bleeding, and is gaseous through during exhaust hole 12, the guide block 111 of bleeding can play the guide effect to gas for gaseous circulation, when gaseous through during the extraction hole 11, movable part 41 will upwards swing and hug closely guide block 111 of bleeding, consequently the guide block 111 of bleeding can also play the prevention the activity piece 4 the excessive swing of movable part 41 is avoided the condition of offset appears in the activity piece, movable part 41 will exhaust hole 12 covers completely, can guarantee before this vacuum pump carries out the work of bleeding, and gas leakage can not take place for this vacuum pump, has improved the work efficiency of this vacuum pump and the stability of during operation.

As shown in fig. 4 to 5, a boundary convex body 24 is formed at the upper end of the pump cover 2, the boundary convex body 24 extends upwards and defines a first receiving groove 25, a partition block 26 is formed at the middle part of the first receiving groove 25, the partition block 26 divides the first receiving groove 25 into a first suction area 251 for receiving the suction through hole 21 and a first exhaust area 252 for receiving the exhaust through hole 22, a second receiving groove 14 recessed downwards and formed to be matched with the first receiving groove 25 is formed at the bottom of the pump body 1, a second suction area 141 for receiving the suction hole 11 and a second exhaust area 142 for receiving the exhaust hole 12 are formed in the second receiving groove 14, and a partition groove 15 matched with the partition block 26 is defined between the second suction area 141 and the second exhaust area 142. Specifically, through the cooperation of the first accommodating groove 25 and the second accommodating groove, the gap between the pump body 1 and the pump cover 2 is completely sealed, so that the vacuum pump is prevented from generating gas, the gap between the pump body 1 and the pump cover 2 is completely separated through the cooperation of the partition stop block 26 and the partition groove 15, the working area for pumping gas and the working area for exhausting gas cannot interfere with each other, and the fault tolerance of the vacuum pump during working is improved.

As shown in fig. 1 to 4, an air suction pipe 27 communicating with the air suction through hole 21 and an air discharge pipe 28 communicating with the air discharge through hole 22 are formed at the lower end of the pump cover 2, respectively. Specifically, the air exhaust pipe 27 is used for connecting a container, exhausting the container and defining the amount of air entering the vacuum pump each time, the air passing through the air exhaust through hole 22 is exhausted from the air exhaust pipe 28, the air exhaust pipe 28 defines the amount of air exhausted by the vacuum pump each time, and the air exhaust pipe 27 and the air exhaust pipe 28 increase the stability of the vacuum pump during operation.

As shown in fig. 1, 4 and 8, a linkage rod 6 connected to the driving member 3 is installed in the cavity 10, a linkage wheel 61 is formed at the lower end of the linkage rod 6, a linkage groove 611 is formed at the bottom of the linkage wheel 61, a connection groove 51 capable of accommodating the linkage wheel 61 is formed on the swinging member 5, and a convex circle 511 capable of being matched with the linkage groove 611 is formed in the connection groove 51. Specifically, the driving part 3 can control the linkage rod 6 to swing in the cavity 10, so as to drive the swinging part 5 to swing, thereby controlling the opening and closing of the air exhaust hole 21 and the air exhaust hole 11.

As shown in fig. 1, 2, 4 and 8, the driving member 3 includes a rotating motor 31 and an eccentric gear 32 controlled by the rotating motor 31, an outwardly extending rotating shaft 311 is installed in the rotating motor 31, a transmission gear 33 engaged with the eccentric gear 32 is installed on the rotating shaft 311, an eccentric wheel 321 deviating from the center of the eccentric gear 32 is formed on the eccentric gear 32, and the upper end of the linkage rod 6 extends out of the cavity 10 and is formed with a clamping frame 62 capable of being matched with the eccentric wheel 321. Specifically, when the rotating motor 31 rotates, the rotating shaft 311 may be driven to rotate, the eccentric gear 32 rotates along with the rotating shaft, the eccentric gear 32 drives the eccentric gear 32 to rotate through a meshing relationship, the eccentric wheel 321 further rotates, and since the eccentric wheel 321 is further located in the clamping frame 62, when the eccentric wheel 321 rotates, the clamping frame 62 swings along with a rotating track of the eccentric wheel 321, that is, the linkage rod 6 swings along with the rotating track.

As shown in fig. 1-4, a filling ring 34 sleeved on the outer ring of the eccentric wheel 321 is mounted on the eccentric gear 32, and the filling ring 34 is tightly attached to the inner wall of the clamping frame 62. In particular, the filling ring 34 reinforces the clamping frame 62, so that the clamping frame 62 can clamp the eccentric 321 all the time, and the eccentric 321 is located in the middle of the clamping frame 62 all the time, i.e., the position of the eccentric 321 in the clamping frame 62 does not change during the movement.

Further, a housing 7 capable of accommodating the eccentric gear 32, the transmission gear 33 and the clamping frame 62 is mounted at the upper end of the pump body 1, and a motor mounting plate 71 for fixing the rotating motor 31 is formed on the housing 7. Specifically, the housing 7 reinforces the position of the rotating motor 31 in the vacuum pump, so that the stability of the vacuum pump during operation is improved, and the housing 7 can protect internal parts such as the driving member 3.

Further, a connecting through hole 72 penetrating through the housing 7 is formed at the lower end of the motor mounting plate 71, a central through hole 322 aligned with the connecting through hole 72 is formed in the middle of the eccentric gear 32, and a central shaft 323 communicating the connecting through hole 72 with the central through hole 322 is mounted on the eccentric gear 32. Specifically, the eccentric gear 32 may rotate around the center shaft 323, and the center shaft 323 fixes the eccentric gear 32 inside the housing 7.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A mechanical vacuum pump comprises a pump body (1), a pump cover (2) and a driving piece (3) used for controlling the pump body (1) and the pump cover (2) to work, wherein a cavity (10) is formed in the pump body (1), and is characterized in that an air suction hole (11) and an air exhaust hole (12) which penetrate through the cavity (10) are formed at the bottom of the pump body (1), an air suction through hole (21) and an air exhaust through hole (22) which penetrate through the pump cover (2) and align with the air suction hole (11) and the air exhaust hole (12) are respectively formed on the pump cover (2), movable pieces (4) used for controlling the opening and closing of the air suction through hole (21) and the air exhaust hole (12) are respectively installed between the pump body (1) and the pump cover (2), the movable pieces (4) are not interfered with each other, the bottom of the pump body (1) is inwards sunken, the air suction hole (11) and the exhaust hole (12) are completely isolated by the partition groove (15), the upper end of the pump cover (2) protrudes outwards to form a partition stop block (26) which can be matched with the partition groove (15), the air suction through hole (21) and the exhaust through hole (22) are completely isolated by the partition stop block (26), a swinging piece (5) used for controlling the opening and closing of the air suction hole (11) and the exhaust hole (12) is further installed in the cavity (10), and the swinging piece (5) is connected with the driving piece (3);

work as driving piece (3) control swing piece (5) correspond during the one end upswing of aspirating hole (11), aspirating hole (11) are opened, it admits air to bleed through-hole (21), movable plate (4) correspond the one end upswing of bleeding through-hole (21), work as driving piece (3) control swing piece (5) correspond during the one end upswing of exhaust hole (12), movable plate (4) correspond the one end downswing of exhaust through-hole (22), exhaust hole (12) are opened, exhaust through-hole (22) are given vent to anger.

2. The mechanical vacuum pump according to claim 1, wherein the movable plate (4) comprises a movable portion (41) for covering the air exhaust through hole (21) and the air exhaust hole (12), respectively, and a fixed portion (42) for reinforcing the movable plate (4), a support block (23) aligned with the fixed portion (42) is formed at the upper end of the pump cover (2), and a clamping groove (13) matched with the fixed portion (42) is formed at the bottom of the pump body (1).

3. Mechanical vacuum pump according to claim 2, characterized in that an inclined suction guide block (111) is formed in the suction hole (11), and the movable portion (41) at the lower end of the discharge hole (12) completely covers the discharge hole (12).

4. The mechanical vacuum pump according to claim 1, wherein the pump cover (2) is formed at an upper end thereof with a boundary protrusion (24), the boundary protrusion (24) extends upward and defines a first receiving groove (25), the partition stopper (26) is located at a central portion of the first receiving groove (25) and divides the first receiving groove (25) into a first suction region (251) for receiving the suction through hole (21) and a first discharge region (252) for receiving the discharge through hole (22), the pump body (1) is recessed at a bottom portion thereof inward and is formed with a second receiving groove (14) engageable with the first receiving groove (25), the partition groove (15) is located at a central portion of the second receiving groove (14) and divides the second receiving groove (14) into a second suction region (141) for receiving the suction hole (11), and a second exhaust area (142) for accommodating the exhaust vent (12).

5. The mechanical vacuum pump according to claim 1, characterized in that the pump cover (2) is formed at its lower end with an air suction pipe (27) communicating with the air suction through hole (21) and an air exhaust pipe (28) communicating with the air exhaust through hole (22), respectively.

6. The mechanical vacuum pump as claimed in claim 1, wherein a linkage rod (6) connected with the driving member (3) is installed in the cavity (10), a linkage wheel (61) is formed at the lower end of the linkage rod (6), a linkage groove (611) is formed at the bottom of the linkage wheel (61), a connection groove (51) capable of accommodating the linkage wheel (61) is formed on the swinging member (5), and a convex circle (511) capable of being matched with the linkage groove (611) is formed in the connection groove (51).

7. The mechanical vacuum pump as claimed in claim 6, wherein the driving member (3) comprises a rotating motor (31) and an eccentric gear (32) controlled by the rotating motor (31), an outwardly extending rotating shaft (311) is installed in the rotating motor (31), a transmission gear (33) engaged with the eccentric gear (32) is installed on the rotating shaft (311), an eccentric wheel (321) deviating from the center of the eccentric gear (32) is formed on the eccentric gear (32), and the upper end of the linkage rod (6) extends out of the cavity (10) and is formed with a clamping frame (62) capable of being matched with the eccentric wheel (321).

8. The mechanical vacuum pump as claimed in claim 7, wherein the eccentric gear (32) is provided with a filling ring (34) sleeved on the outer ring of the eccentric wheel (321), and the filling ring (34) is tightly attached to the inner wall of the clamping frame (62).

9. The mechanical vacuum pump according to claim 7, wherein a housing (7) for accommodating the eccentric gear (32), the transmission gear (33) and the clamping frame (62) is mounted at the upper end of the pump body (1), and a motor mounting plate (71) for fixing the rotating motor (31) is formed on the housing (7).

10. The mechanical vacuum pump of claim 9, wherein the lower end of the motor mounting plate (71) is further formed with a connecting through hole (72) penetrating through the housing (7), a central through hole (322) aligned with the connecting through hole (72) is formed in the middle of the eccentric gear (32), and a central shaft (323) communicating the connecting through hole (72) with the central through hole (322) is mounted on the eccentric gear (32).