CN219733582U

CN219733582U - Vacuum generating device

Info

Publication number: CN219733582U
Application number: CN202320146948.2U
Authority: CN
Inventors: 卢春锐
Original assignee: Guangdong Huajida Precision Machinery Co ltd
Current assignee: Guangdong Huajida Precision Machinery Co ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-09-22
Anticipated expiration: 2033-02-03

Abstract

The utility model belongs to the technical field of vacuum generating devices, and particularly relates to a vacuum generating device, which comprises a shell and a main body piece, wherein a first air inlet channel is arranged in the shell, the first air inlet channel is provided with an air inlet, and a vacuum adsorption port is arranged on the shell; the main part sets up in the casing, the main part is provided with second inlet channel and exhaust passage, second inlet channel communicates with the vacuum adsorption mouth of exhaust passage and casing respectively, exhaust passage and the first inlet channel and the external intercommunication of casing, exhaust passage's cross-sectional area diminishes earlier and then grow from self inlet end to self outlet end, when the gaseous in-process of discharging from exhaust passage of air supply through first inlet channel, the second inlet channel of main part forms negative pressure state, external gas can last be inhaled from the vacuum adsorption mouth of casing, consequently the vacuum adsorption mouth of the device can produce the adsorption affinity, need not establish impeller or fan in, can effectively reduce the device volume.

Description

Vacuum generating device

Technical Field

The utility model relates to the technical field of vacuum generating devices, in particular to a vacuum generating device.

Background

The vacuum generating device is an efficient and clean vacuum component for generating negative pressure by utilizing a positive pressure air source, so that the negative pressure can be obtained easily and conveniently at a place where compressed air exists or a place where positive and negative pressures are simultaneously required in a pneumatic system.

At present, when a vacuum chuck mode is adopted to absorb materials, a vacuum generating device and related components are required to be equipped, and the existing vacuum generating device generally discharges air in the vacuum generating device by means of rotation of an impeller or a fan arranged in the vacuum generating device to form vacuum.

Disclosure of Invention

The embodiment of the utility model aims to provide a vacuum generating device, which solves the technical problems of larger volume and higher cost of the existing vacuum generating device.

In order to solve the above technical problems, an embodiment of the present utility model provides a vacuum generating device, which adopts the following technical scheme:

the vacuum generating device comprises: the device comprises a shell and a main body piece, wherein a first air inlet channel is arranged in the shell, an air inlet used for accessing an air source is formed in the first air inlet channel, and a vacuum adsorption port communicated with the outside is formed in the shell; the main body piece is arranged in the shell, the main body piece is provided with a second air inlet channel and an air outlet channel, the second air inlet channel is respectively communicated with the air outlet channel and the vacuum adsorption port of the shell, the air outlet channel is communicated with the first air inlet channel of the shell and the outside, and the cross section area of the air outlet channel is firstly reduced from the air inlet end to the air outlet end of the main body piece and then is increased; the air of the air source is discharged after passing through the first air inlet channel and the air outlet channel in sequence, the second air inlet channel of the main body piece forms a negative pressure state, and the external air is discharged after passing through the second air inlet channel and the air outlet channel in sequence from the vacuum adsorption port of the shell.

In a preferred aspect of some embodiments, the first air inlet channel is further provided with an air outlet communicating with the air outlet channel of the main body, and the area of the air outlet is smaller than that of the air inlet.

In a preferred aspect of some embodiments, the exhaust passage includes a first sub exhaust passage, a second sub exhaust passage and a third sub exhaust passage that are sequentially communicated, a cross-sectional area of the first sub exhaust passage and a cross-sectional area of the third sub exhaust passage are both larger than a cross-sectional area of the second sub exhaust passage, the first sub exhaust passage is communicated with the first air intake passage, the third sub exhaust passage is communicated with the outside, the first sub exhaust passage is in a circular truncated cone shape, and a diameter of one end of the first sub exhaust passage communicated with the first air intake passage is larger than a diameter of the other end of the first sub exhaust passage.

In a preferred version of some embodiments, the body member is further provided with a third air intake passage communicating with the air exhaust passage and the vacuum suction port of the housing, respectively.

In a preferred aspect of some embodiments, the vacuum generating device further includes a first sealing ring and a second sealing ring, where the first sealing ring and the second sealing ring are disposed at intervals and are both disposed between the main body member and the housing, and a sealing cavity is formed between the first sealing ring and the second sealing ring, and the sealing cavity is communicated with the air outlet end of the air exhaust channel.

In a preferred scheme of some embodiments, the outside circumference of main part is provided with first spacing annular and second spacing annular, first spacing annular and second spacing annular interval set up, first sealing washer is located in the first spacing annular, the second sealing washer is located in the second spacing annular.

In a preferred version of some embodiments, the vacuum generating device further comprises a suction cup, the suction cup being connected to the housing and the suction cup being in communication with the vacuum suction port of the housing.

In a preferred aspect of some embodiments, the housing includes an upper housing body and a cover assembly, the upper housing body is provided with the first air inlet channel, the main body is provided in the upper housing body, the cover assembly is provided with the vacuum adsorption port, and the upper housing body is detachably connected with the cover assembly.

In a preferred aspect of some embodiments, the cover assembly includes a cover and a hollow guide rod, the cover is detachably connected with the upper housing, a through hole is formed in a middle portion of the cover, the guide rod is connected with the cover and is communicated with the second air inlet channel of the main body member through the through hole, and the vacuum adsorption port is formed in the guide rod.

In a preferred aspect of some embodiments, the connection mode of the cover body and the upper shell includes one of a screw connection, a snap connection and a magnetic connection.

Compared with the prior art, the vacuum generating device provided by the embodiment of the utility model has the following main beneficial effects:

according to the vacuum generating device, the first air inlet channel and the vacuum adsorption port are formed in the shell, the second air inlet channel and the air outlet channel are formed in the main body, air source gas is discharged from the air outlet channel through the first air inlet channel, the cross section area of the air outlet channel is contracted firstly and then expanded from the air outlet end of the air outlet channel, a Laval pipe structure is formed, so that the second air inlet channel of the main body forms a negative pressure state, and external gas is sucked into the second air inlet channel from the vacuum adsorption port. Therefore, the vacuum generating device can suck external gas from the vacuum adsorption port to generate adsorption force, and an impeller or a fan is not needed to be arranged in the vacuum generating device, so that the volume of the device can be effectively reduced, and the production cost is reduced.

Drawings

In order to more clearly illustrate the solution of the present utility model, a brief description will be given below of the drawings required for the description of the embodiments, it being obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic perspective view of a vacuum generating device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the assembly of the housing of FIG. 1 with a body member within the housing;

FIG. 3 is a schematic plan view of another angle of FIG. 2;

FIG. 4 is a schematic plan view of a vacuum generating apparatus according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view taken along section B-B in FIG. 4;

FIG. 6 is a schematic perspective view of the body member of FIG. 2;

the reference numerals in the drawings are as follows:

Detailed Description

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 utility model belongs; the terms used in the specification are used herein for the purpose of describing particular embodiments only and are not intended to limit the present utility model, for example, the orientations or positions indicated by the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are orientations or positions based on the drawings, which are merely for convenience of description and are not to be construed as limiting the present utility model.

The terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion; the terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.

In the description of the utility model and the claims and the above figures, when an element is referred to as being "fixed" or "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

Furthermore, references herein to "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The embodiment of the utility model provides a vacuum generating device which is mainly applied to a component inserter, is matched with a sucker to absorb various materials in an absorbing mode, is used for carrying, and is particularly suitable for absorbing fragile, soft and thin waste iron, nonmetallic materials or electronic components.

Preferred embodiments of the present utility model will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the present utility model provides a preferred embodiment of a vacuum generating device, which: the electronic material vacuum device comprises a shell 100 and a main body piece 200, wherein a first air inlet channel 110 is arranged in the shell 100, one end of the first air inlet channel 110 is provided with an air inlet 111 for accessing an air source, a vacuum adsorption port 120 communicated with the outside is arranged on the shell 100, and the vacuum generation device sucks the electronic material through the vacuum adsorption port 120.

The main body 200 is disposed inside the casing 100, and the main body 200 is further provided with a second air inlet channel 210 and an air outlet channel 220, wherein the second air inlet channel 210 is respectively communicated with the air outlet channel 220 and the vacuum adsorption port 120 of the casing 100, and external air can enter the device from the vacuum adsorption port 120 and be discharged after passing through the second air inlet channel 210 and the air outlet channel 220; the exhaust passage 220 is also in communication with the first air intake passage 110 of the housing 100 and the outside, and the air of the air source can be sequentially discharged through the first air intake passage 110 and the exhaust passage 220.

Wherein, since the cross-sectional area of the exhaust channel 220 is reduced from the air inlet end to the air outlet end thereof, a laval tube structure is formed, so that the second air inlet channel 210 of the main body 200 forms a negative pressure state, and the external air is passively sucked into the device from the vacuum adsorption port 120 of the housing 100 for balancing the internal pressure of the vacuum generator, and is sequentially discharged through the second air inlet channel 210 and the exhaust channel 220.

In summary, when the air inlet 111 is connected to the air source and is exhausted from the air exhaust channel 220, the vacuum generating device can generate vacuum, the second air inlet channel 210 forms a negative pressure state, and the external air is sucked into the second air inlet channel 210 from the vacuum adsorption port 120. Therefore, the vacuum generating device can suck external air from the vacuum suction port 120 due to its own structure, and generate suction force by which electronic components and the like are obtained. Therefore, the vacuum generator does not need to be internally provided with an impeller or a fan, the volume of the device can be effectively reduced, the production cost is reduced, and the vacuum generator has a simple structure, is suitable for industrial production and is easy to popularize.

As can be appreciated, the principle of operation of the vacuum generating device is generally as follows: when the air source gas is introduced into the air inlet 111 and discharged from the air outlet 220 through the first air inlet channel 110, the air outlet 220 forms a Laval pipe structure due to the specificity of the air outlet 220, namely, a pipeline which is contracted first and then expanded so as to generate high-speed air flow, the second air inlet channel 210 forms a negative pressure state due to the high-speed circulation of the air in the air outlet 220, and the external air is passively sucked into the device from the vacuum adsorption port 120 of the shell 100 for balancing the negative pressure state and then sequentially discharged through the second air inlet channel 210 and the air outlet 220, and after the air flows into the air outlet 220, the vacuum adsorption port 120 again generates adsorption force to suck the external air, so that the vacuum adsorption port 120 can continuously generate adsorption force to suck electronic materials which cannot be clamped.

In summary, compared with the prior art, the vacuum generating device has at least the following beneficial effects: the vacuum generating device can generate adsorption force to absorb electronic materials through the internal structure after being connected with air source gas, so that power elements such as impellers or fans and the like are prevented from being arranged in the vacuum generating device, the requirement of the device volume on installation space is effectively reduced, and the practicability of the vacuum generating device is enhanced.

In order to better understand the solution of the present utility model, the following description will be made in detail and fully with reference to fig. 1 to 6.

Further, as a specific implementation manner in some embodiments of the present utility model, as shown in fig. 2 to 3, the first air inlet channel 110 is further provided with an air outlet 112 communicating with the air outlet channel 220 of the main body 200, wherein the area of the air outlet 112 is smaller than the area of the air inlet 111. For example, as shown in fig. 3, the gas outlet 112 may be provided in a nozzle shape, and the gas flow rate may be further increased so that the source gas enters the gas discharge passage 220 more quickly.

Preferably, the exhaust passage 220 includes a first sub-exhaust passage 221, a second sub-exhaust passage 222 and a third sub-exhaust passage 223 which are sequentially communicated, the cross-sectional area of the first sub-exhaust passage 221 and the cross-sectional area of the third sub-exhaust passage 223 are larger than the cross-sectional area of the second sub-exhaust passage 222, the first sub-exhaust passage 221 is communicated with the first intake passage 110, and the exhaust port 201 provided on the side wall of the third sub-exhaust passage 223 main body member 200 is communicated, so that when the external air enters the exhaust passage 220 from the first sub-exhaust passage 221, it can be exhausted from the exhaust port 201 through the second sub-exhaust passage 222 and the third sub-exhaust passage 223.

Referring to fig. 5, the first sub-exhaust passage 221 has a circular truncated cone shape, and one end of the first sub-exhaust passage 221 communicating with the first intake passage 110 has a larger diameter than the other end thereof for receiving the gas flowing in the first and second intake passages 110 and 210. By arranging the first sub-exhaust channel 221 in a circular truncated cone shape, the gas entering the second air inlet channel 210 can be prevented from entering the first air inlet channel 110, or the gas entering the second air inlet channel 210 and the gas entering the first air inlet channel 110 are mutually opposite to each other, and the end face with the large diameter of the first sub-exhaust channel 221 is arranged between the first air inlet channel 110 and the second air inlet channel 210, so that the buffer effect can be achieved on the gas which is accessed from two sides, and the structure of the first sub-exhaust channel 221 with the large upper part and the small lower part can enable the flow rate of the gas entering the first sub-exhaust channel 221 to be increased, thereby being more convenient for forming high-speed airflow to be discharged from the exhaust channel 220.

Preferably, the body member 200 is further provided with a third air inlet passage 310, and the third air inlet passage 310 communicates with the air outlet passage 220 and the vacuum suction port 120 of the housing 100, respectively, and the third air inlet passage 310 functions the same as the second air inlet passage 210, and receives external air to enter the air inlet passage through the vacuum suction port 120. Wherein, the vacuum generating device is provided with at least one air inlet channel as a second air inlet channel 210, and the suction force of the guide rod 1021 can be controlled by changing the inner diameter of the second air inlet channel 210; if a plurality of air inlet channels are provided, one air inlet channel is fixed as a main air inlet channel, the inner diameter of the main air inlet channel is matched with the vacuum adsorption port 120, so that external air can circulate, and the shape and the size of the plurality of auxiliary air inlet channels can be adjusted according to the adsorption force required for absorbing specific electronic components, so that different types of electronic components can be adsorbed.

Preferably, referring to fig. 3 or 5, the vacuum generating device further includes two sealing rings 202, which are respectively set as a first sealing ring and a second sealing ring, where the first sealing ring and the second sealing ring are disposed at intervals and are both disposed between the main body member 200 and the housing 100, so as to enhance the friction force between the main body member 200 and the inner wall of the housing 100, when the vacuum generating device works normally, the main body member 200 is prevented from rocking left and right, the process of entering the exhaust channel 220 is not smooth, and meanwhile, a sealing cavity is formed between the first sealing ring and the second sealing ring, and is communicated with the air outlet end of the exhaust channel 220, so that the process of entering the exhaust channel 220 and outputting the air is not affected by other external air.

Further, two limiting ring grooves 203 are circumferentially arranged on the outer side of the main body piece 200 and are respectively arranged as a first limiting ring groove and a second limiting ring groove, the first limiting ring groove and the second limiting ring groove are arranged at intervals, a first sealing ring is arranged in the first limiting ring groove, a second sealing ring is arranged in the second limiting ring groove, the two sealing rings 202 are arranged on the two limiting ring grooves 203 and connected with the inner wall of the shell 100, the two limiting ring grooves 203 can axially limit the two sealing rings 202, the friction force between the main body piece 200 and the shell 100 is further enhanced, and the normal working stability of the main body piece 200 is ensured; or the two limit ring grooves can be also arranged on the inner wall of the shell 100, the first seal ring and the second seal ring are sleeved on the main body piece 200 and then are connected with the limit grooves at corresponding positions in a matched manner, and the arrangement can also ensure that the process of exhausting the gas from the exhaust channel 220 is not influenced by other external gas and enhance the friction force between the main body piece and the shell.

Preferably, the vacuum generating device further comprises a sucking disc, the sucking disc is connected with the shell 100, and the sucking disc is communicated with the vacuum suction port 120 of the shell 100 to directly replace the clamping jaw for sucking the electronic component which cannot be clamped. Further, the shape, the size and the material of the sucker of the vacuum generating device are not fixed, or the sucker can be customized according to the requirement, so that the requirement of a user is further met, and the adaptation universality of the vacuum generating device is enhanced.

Further, referring to fig. 3 and 4, the casing 100 includes an upper casing 101 and a cover assembly 102, the upper casing 101 is provided with a first air inlet channel 110, the main body member 200 is disposed in the upper casing 101, the cover assembly 102 is provided with a vacuum adsorption port 120, the upper casing 101 is detachably connected with the cover assembly 102, the detachable connection mode of dividing the casing 100 into an upper part and a lower part is more convenient to install or detach the main body member 200 placed inside the casing 100, and the casing 100 of the vacuum generating device is set to be split, so that the assembly and the disassembly are more convenient, the maintenance is convenient, and the damage to the device in the assembly and disassembly process can be avoided, thereby influencing the vacuumizing effect of the vacuum generating device.

Preferably, the cover assembly 102 includes a cover 1020 and a hollow guide rod 1021, the cover 1020 is detachably connected with the upper case 101, a through hole is formed in the middle of the cover 1020, the guide rod 1021 is connected with the cover 1020 and is communicated with the second air inlet channel 210 of the main body 200 through the through hole, and the vacuum suction port 120 is formed in the guide rod 1021. The materials of the housing 100 and the cover assembly 102 include, but are not limited to, plastics, metals, or composite materials, and the connection mode of the cover 1020 and the upper housing 101 includes one of screw connection, snap connection, and magnetic connection.

When the connection mode of the cover body 1020 and the upper shell body 101 is the screw connection, the screw holes can be respectively arranged on the upper shell body 101 and the cover body 1020, then the upper shell body 101 and the cover body 1020 are in threaded connection through the screws, and the connection mode is reliable in connection and convenient to assemble and disassemble, and is widely used in the mechanical field.

When the lid 1020 is connected with last casing 101 for the magnetism is inhaled, the structure that the magnetism is inhaled and is connected includes two magnets, be one of two magnets of setting up on being close to the terminal surface of lid 1020 through going up casing 101, set up another of two magnets on the lid 1020, when the different homopolar of two magnets are close to each other, the eddy current of magnet will with the interaction of different grade magnet, produce the effect of mutual attraction for lid 1020 and last casing 101 realize being connected, this kind of connected mode, connect convenient and fast, need not accurate counterpoint, just can realize the connection of lid 1020 and last casing 101 by the automatic actuation of the positive negative pole of magnet, effectively save installation time.

When the lid 1020 is connected with the upper shell 101 in a snap-fit manner, a groove can be circumferentially arranged on the end surface of the upper shell 101 close to the lid 1020, a protruding portion is arranged on the end surface of the lid 1020 close to the upper shell 101, and when the protruding portion is in contact connection with the groove, the snap-fit connection of the lid 1020 and the upper shell 101 can be realized.

The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A vacuum generating device, characterized in that: comprises a shell body and a main body piece,

a first air inlet channel is arranged in the shell, an air inlet for accessing an air source is arranged in the first air inlet channel, and a vacuum adsorption port communicated with the outside is arranged on the shell;

the main body piece is arranged in the shell, the main body piece is provided with a second air inlet channel and an air outlet channel, the second air inlet channel is respectively communicated with the air outlet channel and the vacuum adsorption port of the shell, the air outlet channel is communicated with the first air inlet channel of the shell and the outside, and the cross section area of the air outlet channel is firstly reduced from the air inlet end to the air outlet end of the main body piece and then is increased;

the air of the air source is discharged after passing through the first air inlet channel and the air outlet channel in sequence, the second air inlet channel of the main body piece forms a negative pressure state, and the external air is discharged after passing through the second air inlet channel and the air outlet channel in sequence from the vacuum adsorption port of the shell.

2. The vacuum generating apparatus according to claim 1, wherein the first air intake passage is further provided with an air outlet communicating with an air exhaust passage of the main body member, the air outlet having an area smaller than an area of the air inlet.

3. The vacuum generating device according to claim 1, wherein the exhaust passage includes a first sub exhaust passage, a second sub exhaust passage, and a third sub exhaust passage which are communicated in this order, a cross-sectional area of the first sub exhaust passage and a cross-sectional area of the third sub exhaust passage are both larger than a cross-sectional area of the second sub exhaust passage, the first sub exhaust passage is communicated with the first intake passage, the third sub exhaust passage is communicated with the outside, the first sub exhaust passage is in a circular truncated cone shape, and a diameter of an end of the first sub exhaust passage communicated with the first intake passage is larger than a diameter of the other end.

4. A vacuum generating device as claimed in any one of claims 1 to 3, wherein said main body member is further provided with a third air intake passage communicating with said air exhaust passage and a vacuum suction port of said housing, respectively.

5. A vacuum generating device as claimed in any one of claims 1 to 3, further comprising a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring being arranged at intervals and both being arranged between the body member and the housing, a sealing cavity being formed between the first sealing ring and the second sealing ring, the sealing cavity being in communication with the air outlet end of the air outlet channel.

6. The vacuum generating device of claim 5, wherein a first and a second limiting ring grooves are circumferentially arranged on the outer side of the main body member, the first and second limiting ring grooves are arranged at intervals, the first sealing ring is arranged in the first limiting ring groove, and the second sealing ring is arranged in the second limiting ring groove.

7. A vacuum generating device as claimed in any one of claims 1 to 3, further comprising a suction cup, said suction cup being connected to said housing and said suction cup being in communication with a vacuum suction port of said housing.

8. A vacuum generating device as claimed in any one of claims 1 to 3, wherein said housing comprises an upper housing provided with said first air intake passage, and a cover assembly provided with said vacuum suction port, said upper housing being detachably connected to said cover assembly.

9. The vacuum generating apparatus according to claim 8, wherein the cover assembly comprises a cover and a hollow guide rod, the cover and the upper housing are detachably connected, a through hole is provided in a middle portion of the cover, the guide rod is connected to the cover and communicates with the second air inlet passage of the main body member through the through hole, and the vacuum suction port is provided on the guide rod.

10. The vacuum generating device of claim 9, wherein the connection of the cover to the upper housing comprises one of a screw connection, a snap connection, and a magnetic connection.