CN216131086U - Liquid ring vacuum pump device - Google Patents

Abstract

The utility model belongs to the technical field of vacuum pumps, in particular to a liquid ring vacuum pump device which comprises an impeller and an integrated pump structure, wherein the upper part of the pump structure is provided with an air suction chamber and a discharge chamber, the lower part of the pump structure is provided with a compression chamber, a shaft hole which downwards penetrates through the inner top wall of the compression chamber is arranged between the air suction chamber and the discharge chamber, the shaft hole is eccentrically arranged relative to the center of the compression chamber, the shaft hole downwards penetrates through the inner top wall of the compression chamber, the inner top wall of the compression chamber is provided with an air suction flow distribution hole communicated with the air suction chamber, a discharge flow distribution hole communicated with the discharge chamber and a liquid inlet channel which extends to the outer surface of the pump structure to form a liquid inlet, the impeller is rotatably arranged in the compression chamber by taking the axis of the shaft hole as a rotating shaft, and a driving shaft of a driving device for driving the impeller to rotate passes through the shaft, and the integrated pump structure of the utility model is simpler, the assembly is more convenient, the air exhaust speed is faster, and the negative pressure is more stable.

Description

Liquid ring vacuum pump device

Technical Field

The utility model belongs to the technical field of vacuum pumps, and particularly relates to a liquid ring vacuum pump device.

Background

A liquid ring vacuum pump is a vacuum pumping device with the advantages of simple structure, uniform air suction, stable and reliable work and the like, and is widely applied to various industries such as medical treatment, chemical engineering, electric power and the like, the existing liquid ring vacuum pump comprises a motor, a mounting seat, an impeller, a cover plate and a pump cover, an air suction cavity and a discharge cavity which are mutually independent are arranged in the pump cover, the side part of the pump cover is respectively provided with an air suction interface communicated with the air suction cavity and a discharge interface communicated with the discharge cavity, the bottom of the pump cover is provided with a liquid inlet channel communicated with the air suction cavity and the steam discharge cavity, the cover plate is sealed and covered on the upper sides of the air suction cavity and the discharge cavity of the pump cover and is provided with an air suction flow distribution hole communicated with the air suction cavity, a discharge flow distribution hole communicated with the discharge cavity and a liquid inlet communicated with the liquid inlet channel, the mounting seat is covered on the cover plate in a mode without opening at the lower side and forms a compression cavity used for assembling the impeller with the cover plate, the motor is installed at the mount pad upside, its drive shaft stretches into in the compression chamber and is connected with the impeller transmission, the during operation impeller rotates adsorbed gas and makes gas in proper order via the interface of breathing in, the suction chamber with breathe in the flow distribution hole and get into the compression chamber, liquid pours into the compression chamber into from inlet channel into simultaneously, along with the rotation of impeller, be located the interior liquid of compression chamber and gas through discharge flow distribution hole discharge realization evacuation, the vacuum pump structure of this kind of structure is complicated now, be unfavorable for assembly production.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of complex overall structure and more parts of the existing vacuum pump, and provides a vacuum pump device adopting an integrated pump structure, so that the structure of the vacuum pump is simplified, and the assembly and the production of the vacuum pump are facilitated.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a liquid ring vacuum pump device, includes impeller and integrative pump structure, pump structure upper portion has the cavity of breathing in and the discharge chamber, and the lower part has compression chamber, the cavity of breathing in with be equipped with downward running through between the discharge chamber the shaft hole of roof in the compression chamber, the eccentric center that compresses the cavity relatively in shaft hole sets up, the shaft hole runs through downwards compression chamber's interior roof, the intercommunication has been seted up to compression chamber's interior roof the suction of cavity is joined in marriage discharge hole, intercommunication the discharge of discharge chamber is joined in marriage the discharge hole and is extended to the inlet channel of pump structure surface formation feed liquor interface, the impeller with the axis in shaft hole is rotatably installed for the rotation axis in the compression chamber, the shaft hole is used for supplying the drive arrangement's of drive impeller rotation drive shaft to pass.

Compared with the prior art, the liquid ring vacuum pump device provided by the utility model is applied to a vacuum pump and is connected with a driving device, the driving device is such as a motor, a driving shaft of the motor penetrates through a shaft hole to be in transmission connection with an impeller, liquid is injected into a compression cavity during working, the motor drives the impeller to rotate to form a liquid ring so as to suck air, so that gas flows into the compression cavity from an air suction interface sequentially through an air suction cavity and an air suction distribution hole, along with the further rotation of the impeller, the gas in the compression cavity is compressed, and the liquid is discharged from a discharge interface sequentially through a discharge distribution hole and a discharge cavity to realize vacuum pumping The negative pressure is more stable, and the movement and the operation are more stable.

Further, the discharge distribution hole comprises a normal opening hole and at least one openable or closable proportioning hole, the number of the openings of the proportioning hole is determined according to the compression ratio, preferably, the proportioning hole is provided with a sealing element for controlling the opening and closing of the proportioning hole, and the discharge distribution hole is arranged in a mode that a user can adjust the compression ratio according to actual conditions.

Furthermore, the projection of the air suction distribution hole and the projection of the discharge distribution hole on the horizontal plane are of arc structures, the aperture of the air suction distribution hole is gradually enlarged along the rotating direction of the impeller, the aperture of the discharge distribution hole is gradually narrowed along the rotating direction of the impeller, and the shapes of the air suction distribution hole and the discharge distribution hole can improve the air suction and compression capacity of the vacuum pump. Preferably, the proportioning hole is formed in one end of the narrowed aperture of the discharge orifice, the normally-opened hole is formed in one end of the enlarged aperture of the discharge orifice, and fine adjustment of the compression ratio can be facilitated by the arrangement mode.

Further, in order to improve the efficiency of liquid injection compression chamber, the lateral wall in shaft hole is equipped with the intercommunication inlet of inlet channel.

Further, the pump structure includes integrative epitheca and inferior valve, the epitheca upside is uncovered, and its inner chamber middle part is equipped with the mount pad, the mount pad will the epitheca inner chamber is separated into inhale the cavity with the discharge cavity, inhale the cavity with the sealed lid of the upside of discharge cavity is equipped with the apron, the shaft hole sets up on the mount pad, the inferior valve with epitheca eccentric settings, its downside is uncovered to be formed compression cavity, compression cavity's the sealed lid of downside is equipped with the bottom plate, and above-mentioned pump structure adopts integrative structure, through setting up the mount pad in the epitheca to form and inhale cavity and discharge cavity to through setting up the shaft hole at the middle part of mount pad, thereby make the structure simple compactness more, and set up the components of a whole that can function independently structure of apron and bottom plate and can be convenient for maintain above-mentioned three cavity.

Further, the cover plate and/or the bottom plate and the pump structure are sealed through sealing glue.

Further, still including installing the tray of apron upside, the tray is used for installing drive arrangement, and it corresponds the shaft hole is equipped with the via hole, the via hole supplies drive arrangement's drive shaft to pass the via hole stretches into the shaft hole is connected with the impeller transmission.

Furthermore, convex edges are arranged between the inner side wall of the pump structure and the air suction chamber and between the inner side wall of the pump structure and the discharge chamber, the cover plate is supported on the upper side of the convex edges, and the tray is sequentially connected with the cover plate and the convex edges through screws.

Drawings

FIG. 1 is a perspective view of a liquid ring vacuum pump apparatus;

FIG. 2 is a perspective view of the pump structure;

FIG. 3 is a bottom view of the pump structure;

FIG. 4 is an exploded view of the liquid ring vacuum pump apparatus;

FIG. 5 is a perspective view of a vacuum pump to which the liquid ring vacuum pump apparatus is applied;

FIG. 6 is a sectional view of a vacuum pump to which the liquid ring vacuum pump apparatus is applied;

fig. 7 is a sectional view of a vacuum pump to which the liquid ring vacuum pump apparatus is applied.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 7, the present embodiment provides a liquid ring vacuum pump apparatus, which is applied to a vacuum pump and is used for being connected to a motor 6 of the vacuum pump, and includes a pump structure 1, a cover plate 2, a bottom plate 3, a tray 4, and an impeller 5, wherein the pump structure 1 includes an integrated upper shell 11 and a lower shell 12, in a specific arrangement, the upper shell 11 and the lower shell 12 are integrally formed by casting, an upper side of the upper shell 11 is open, the cover plate 2 covers an upper side of the upper shell 11 to seal an opening of the upper shell 11, a mounting seat 13 is disposed in a middle portion of an inner cavity of the upper shell 11, the mounting seat 13 includes a seat body 131 located in the middle portion and a connecting wall 132 connecting the seat body 131 and two opposite sides of the upper shell 11, the mounting seat 13 divides the inner cavity of the upper shell 11 into two transversely disposed chambers, the two chambers respectively form a suction chamber 101 and a discharge chamber 102, a lower side of the lower shell 12 is open to form a compression chamber 103, the bottom plate 3 is sealed and arranged at the lower side of the compression chamber 103, the lower shell 12 is eccentrically arranged relative to the upper shell 11, and the mounting seat 13 is provided with a shaft hole 17 which downwards penetrates through the inner top wall of the compression chamber 103 and upwards penetrates through the cover plate 2.

Referring to fig. 1 to 7, the side of the pump structure 1 is respectively provided with an air suction port 111 communicating with the air suction chamber 101, a discharge port 112 communicating with the discharge chamber 102, and a liquid inlet port 113, and the inner top wall of the compression chamber 103 is provided with an air suction flow distribution hole 14 communicating with the air suction chamber 101, a discharge flow distribution hole 15 communicating with the discharge chamber 102, and a liquid inlet channel 16 communicating with the liquid inlet port 113, as shown in fig. 4, in a modified embodiment, a liquid inlet 161 communicating with the liquid inlet channel 16 is provided on the side wall of the shaft hole 17, so as to improve the liquid inlet efficiency, the liquid can simultaneously flow into the compression chamber 103 from the shaft hole 17 by providing the liquid inlet 161.

Referring to fig. 1 to 7, the impeller 5 is rotatably installed in the compression chamber 103 with the axis of the shaft hole 17 as a rotation axis, the tray 4 is installed on the upper side of the cover plate 2, the tray 4 is provided with a through hole 41 corresponding to the shaft hole 17, the tray 4 is used for installing the motor 6, the motor 6 is connected to the upper side of the tray 4 when the motor 6 is assembled, and the driving shaft 61 of the motor 6 downwardly passes through the through hole 41 and is in transmission connection with the impeller 5 through the shaft hole 17.

Referring to fig. 1 to 7, the shaft hole 17 is eccentrically disposed with respect to the center of the compression chamber 103, as shown in fig. 3, a space between the impeller 5 and the inner wall of the compression chamber 103 forms crescent-shaped regions (104a,104b), the crescent-shaped regions (104a,104b) include narrowed sections 104a at both ends and an enlarged section 104b between the narrowed sections 104a at both ends, the suction distribution hole 14 and the discharge distribution hole 15 are respectively located in regions immediately above the impeller 5 and near the narrowed sections 104a, and when the vacuum pump is operated, the vacuum pump is placed on the working platform with the motor facing upward and the bottom plate facing downward, as shown by arrows in fig. 3, the motor 6 rotates the impeller 5 in the direction from the suction distribution hole 14 to the enlarged sections 104b, so that crescent-shaped liquid rings corresponding to the crescent-shaped regions (104a,104b) are formed on the periphery of the impeller 5, and the half of the liquid ring located on the side near the suction distribution hole 14 is gradually increased in the rotation direction of the impeller 5, as the rotation of the impeller 5 realizes air suction, the gas is sucked into the compression chamber 103 from the air suction interface 111 through the air suction chamber 101 through the air suction distributing hole 14 and flows into the blades 51 of the impeller 5, the half of the liquid ring on the side close to the discharge distributing hole 15 is gradually narrowed along the rotation direction of the impeller 5 so as to compress the gas between the blades, the compression process is realized, and the compressed gas and liquid flow into the discharge chamber 102 from the discharge distributing hole 15 and are discharged through the discharge interface 112 in further rotation of the impeller 5, so that the vacuum pumping is realized.

Referring to fig. 2, the projections of the suction chamber 101 and the discharge chamber 102 on the horizontal plane are arc-shaped structures, and in a specific arrangement, the volume ratio of the suction chamber 101 to the discharge chamber 102 is 3: 2.

Referring to fig. 3, the discharge orifice 15 includes a constant orifice 151 and at least one proportioning orifice 152 that can be opened or closed, and the proportioning orifice 152 can be opened in a certain amount according to the desired compression ratio, so that the user can adjust the compression ratio according to the actual situation. In a preferred embodiment, the proportioning hole 152 is provided with a sealing member for controlling the opening and closing thereof, such as a screw screwed into the proportioning hole 152.

Referring to fig. 3, the projections of the suction orifice 14 and the discharge orifice 15 on the horizontal plane are arc-shaped, wherein, in order to improve the suction effect, the suction orifice 14 and the discharge orifice 15 are arranged in a crescent arc-shaped structure, that is, the aperture of the suction orifice 14 is gradually enlarged in the direction of rotation of the impeller 5, and the aperture of the discharge orifice 15 is gradually narrowed in the direction of rotation of the impeller 5 in order to improve the compression effect. In a specific embodiment, the proportioning hole 152 is provided at the end where the diameter of the discharge orifice 15 is narrowed, and the normally open hole 151 is provided at the end where the diameter of the discharge orifice 15 is widened, which makes it easier to finely adjust the compression ratio relative to the arrangement of the proportioning hole 152 at the end where the diameter of the discharge orifice 15 is widened, so as to prevent the compression ratio from being greatly changed every time one proportioning hole 152 is closed or opened. In a preferred embodiment, the normally open hole 151 is an elongated hole, the proportioning hole 152 is a circular hole, and the circular hole is easily configured with the above-mentioned sealing member, so that the switching of the on/off state of the proportioning hole 152 is easier.

Referring to fig. 4 to 7, the cover plate 2 and the base plate 3 are sealed with the pump structure 1 by a sealant, which may be a sealing material such as epoxy resin.

Referring to fig. 6 and 7, the shaft hole 17 and the driving shaft 61 are sealed by a mechanical seal, and the sealing effect is good.

Referring to fig. 2 to 7, convex edges 114 extending inwards are arranged between the inner side wall of the upper shell 11 and the air suction chamber 101 and between the inner side wall of the upper shell and the exhaust chamber, the cover plate 2 is supported on the upper side of the convex edges 114, and the tray 4 is sequentially connected with the cover plate 2 and the convex edges 114 through screws.

Compared with the prior art, the liquid ring vacuum pump device provided by the utility model is applied to a vacuum pump, the driving shaft 61 of the motor 6 penetrates through the shaft hole to be in transmission connection with the impeller, when in work, liquid is injected into the compression chamber 103 when in work, the motor 6 drives the impeller 5 to rotate to form a liquid ring so as to suck air, so that the air flows into the compression chamber 103 from the air suction interface 111 through the air suction chamber 101 and the air suction distributing hole 14 in sequence, along with the further rotation of the impeller 5, the air in the compression chamber 103 is compressed, and the liquid is discharged from the discharge interface 112 through the discharge distributing hole 15 and the discharge chamber 102 in sequence to realize vacuum pumping, the utility model adopts the integrated pump structure 1 which integrates the air suction chamber 101, the discharge chamber 102 and the compression chamber 103, so that the structure of the vacuum pump is simpler, the assembly is more convenient, and the flow path of the fluid is changed, the air suction speed is faster, the negative pressure is more stable, and the movement and the operation are more stable.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. Liquid ring vacuum pump unit, its characterized in that, including impeller and integrative pump structure, pump structure upper portion has the cavity of breathing in and the discharge chamber, and the lower part has compression chamber, the cavity of breathing in with be equipped with between the discharge chamber and run through downwards the shaft hole of roof in the compression chamber, the central eccentric settings of the relative compression chamber in shaft hole, the intercommunication has been seted up to compression chamber's interior roof the cavity of breathing in breathe in join in marriage discharge orifice, intercommunication the discharge join in marriage discharge chamber's discharge join in marriage the discharge orifice and extend to the inlet channel of pump structure surface formation feed liquor interface, the impeller with the axis in shaft hole is rotatably installed for the rotation axis in the compression chamber.

2. The liquid ring vacuum pump assembly as defined in claim 1, wherein the discharge port includes a normally open hole and at least one openable or closable proportioning hole.

3. The liquid ring vacuum pump apparatus as claimed in claim 2, wherein the proportioning hole is provided with a sealing member for controlling opening and closing thereof.

4. The liquid ring vacuum pump apparatus as claimed in claim 2, wherein the projections of the suction orifice and the discharge orifice on the horizontal plane are arc-shaped structures, the aperture of the suction orifice is gradually enlarged in the direction of rotation of the impeller, and the aperture of the discharge orifice is gradually narrowed in the direction of rotation of the impeller.

5. The liquid ring vacuum pump apparatus as claimed in claim 4, wherein the proportioning hole is provided at an end where the aperture of the discharge orifice is narrowed, and the normal opening is provided at an end where the aperture of the discharge orifice is enlarged.

6. The liquid ring vacuum pump device as claimed in claim 1, wherein the side wall of the shaft hole is provided with a liquid inlet communicated with the liquid inlet channel.

7. The liquid ring vacuum pump device as claimed in any one of claims 1 to 6, wherein the pump structure comprises an upper casing and a lower casing which are integrated, the upper casing is open at the upper side, a mounting seat is arranged in the middle of the inner cavity of the upper casing, the mounting seat divides the inner cavity of the upper casing into the air suction chamber and the discharge chamber, the upper sealing covers of the air suction chamber and the discharge chamber are provided with cover plates, the shaft hole is arranged on the mounting seat, the lower casing and the upper casing are arranged eccentrically, the lower opening of the lower casing forms the compression chamber, and the lower sealing cover of the compression chamber is provided with a bottom plate.

8. The liquid ring vacuum pump apparatus of claim 7, wherein the cover plate and/or the base plate is sealed to the pump structure by a sealant.

9. The liquid ring vacuum pump device of claim 8, further comprising a tray mounted on the upper side of the cover plate, wherein the tray is provided with a through hole corresponding to the shaft hole.

10. A liquid ring vacuum pump apparatus as claimed in claim 9, wherein a convex edge is provided between the inner side wall of the pump structure and the suction chamber and between the inner side wall of the pump structure and the discharge chamber, the cover plate is supported on the upper side of the convex edge, and the tray is connected with the cover plate and the convex edge in sequence through screws.

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