CN215949966U

CN215949966U - Air exhaust joint and liquid suction device comprising same

Info

Publication number: CN215949966U
Application number: CN202121367262.3U
Authority: CN
Inventors: 苏逸俊
Original assignee: Guangzhou Diesel Engine Factory Co ltd
Current assignee: Guangzhou Diesel Engine Factory Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-03-04
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses an air extraction joint and a liquid suction device comprising the same, wherein the air extraction joint comprises a guide channel and a main channel, the guide channel is communicated with the main channel, the first end of the main channel is used for being communicated with a container, the second end of the main channel forms an air outlet, air flows out of the air outlet after passing through the guide channel and the main channel in sequence, and the included angle between the air flowing direction at the joint of the guide channel and the main channel and the air flowing direction at the air outlet is smaller than 90 degrees. The imbibition device comprises an air suction connector. According to the utility model, compressed air is introduced into the air extraction joint, the compressed air flows to the outside through the guide channel, and the high-speed compressed air drives the air in the liquid storage barrel to move to the outside, so that negative pressure is formed in the liquid storage barrel, and liquid can be absorbed through the liquid conveying pipe, and the liquid absorption work is completed. The present invention relates to the field of liquid extraction devices.

Description

Air exhaust joint and liquid suction device comprising same

Technical Field

The utility model relates to an air extraction joint and a liquid suction device comprising the same in the field of liquid extraction devices.

Background

During production, it is often necessary to store the liquid in a special reservoir, thereby requiring a liquid transfer device. At present, liquid absorption is carried out by special equipment such as a water pump and the like, but the water pump is heavy and is inconvenient. And a special water pump is additionally purchased only for completing the liquid suction work, so that the production cost is not reduced.

In the actual production process, compressed air is a common power source and is often used for driving a pneumatic device and a cleaning tool, and the suction work can be more convenient if the compressed air can be used.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solve at least one of the problems of the prior art, and provides an air suction connector and a liquid suction device including the same, which are small in size and can perform a liquid suction operation by using compressed air.

According to the embodiment of the first aspect of the utility model, the air extraction joint comprises an air extraction joint body, the air extraction joint body is provided with a guide channel and a main channel, the guide channel is communicated with the main channel, the first end of the main channel is used for being communicated with a container, the second end of the main channel forms an air outlet, air flows out of the air outlet after passing through the guide channel and the main channel in sequence, and an included angle between the air flowing direction of the connection part of the guide channel and the main channel and the air flowing direction of the air outlet is smaller than 90 degrees.

According to an embodiment of the first aspect of the present invention, further, the channel cross-sectional area of the guide channel gradually decreases in the air flow direction.

According to an embodiment of the first aspect of the present invention, the suction connector body further includes an outer tube and an inner tube, the inner tube is used for communicating with a container, the outer tube is sleeved outside the inner tube, the outer tube is at least divided into a first tube section and a second tube section, the first tube section and an inner space of the inner tube jointly form the main channel, and a guide channel is formed between an inner wall of the second tube section and an outer wall of the inner tube.

According to an embodiment of the first aspect of the utility model, further, the outer tube and the inner tube are connected by a threaded snap connection.

According to an embodiment of the first aspect of the present invention, further, the outer tube is provided with an air inlet, the air inlet is connected with the air tube, and the air inlet is communicated with the guide passage.

According to a second aspect of the present invention there is provided a pipetting device including a suction attachment as described in any one of the above.

According to an embodiment of the second aspect of the present invention, further, the liquid suction device further includes a liquid delivery connector, a gas delivery device and a liquid storage barrel, the liquid delivery connector and the first end of the main channel are both connected to the liquid storage barrel, and the gas delivery device is communicated with the guide channel.

According to an embodiment of the second aspect of the present invention, further, the infusion connector and the first end of the main channel are detachably connected to the reservoir.

According to an embodiment of the second aspect of the present invention, further, the infusion connector and the first end of the main channel are both mounted on the upper surface of the liquid storage barrel.

According to an embodiment of the second aspect of the present invention, further, the air delivery device includes an air valve and an air pipe, the outer pipe is provided with an air inlet, the air inlet is communicated with the guide passage, and the air pipe is communicated with the air inlet through the air valve.

The utility model has the beneficial effects that: according to the utility model, compressed air is introduced into the air extraction joint, the compressed air flows to the outside through the guide channel, and the high-speed compressed air drives the air in the liquid storage barrel to move to the outside, so that negative pressure is formed in the liquid storage barrel, and liquid can be absorbed through the liquid conveying pipe, and the liquid absorption work is completed.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is a schematic structural view of the present invention;

figure 2 is a schematic diagram of the structure of the suction fitting.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1-2, the suction fitting in the first embodiment of the present invention includes a suction fitting body 3, the suction fitting body 3 is provided with a guide channel 33 and a main channel 34, the guide channel 33 is communicated with the main channel 34, a first end of the main channel 34 is used for communicating with a container to be sucked, and a second end of the main channel 34 forms an air outlet 35. After the liquid suction operation starts, high-speed compressed air passes through the guide passage 33 and the main passage 34 in order and then flows out from the air outlet 35 to the outside. The included angle between the air flowing direction at the connection position of the guide channel 33 and the main channel 34 and the air flowing direction at the air outlet 35 is smaller than 90 degrees, so that compressed air is ensured to be smoothly discharged outside, and high-speed compressed air drives the air in the container to flow, so that negative pressure is formed in the container, and the liquid suction work is completed.

Further, the cross-sectional area of the channel of the guide channel 33 is gradually reduced along the air flowing direction, and the gradually narrowed channel accelerates the flow velocity of the compressed air, so that the air in the container can be taken away more quickly, and the liquid suction efficiency is accelerated.

In this embodiment, the suction connector body 3 further includes an outer tube 31 and an inner tube 32, a first end of the inner tube 32 is used for communicating with the container, and the outer tube 31 is sleeved outside the inner tube 32. The outer pipe 31 is divided into a first pipe section 312 and a second pipe section 313 by the second end of the inner pipe 32, and the first pipe section 312 and the inner space of the inner pipe 32 are combined together to form the main channel 34. After the outer pipe 31 and the inner pipe 32 are connected, the inner wall of the second pipe section 313 and the outer wall of the inner pipe 32 are not completely attached, that is, a gap exists between the second pipe section 313 and the inner pipe 32, and the gap serves as a guide channel 33. The combined design of the outer pipe 31 and the inner pipe 32 is adopted to facilitate later maintenance and disassembly.

Furthermore, the outer tube 31 and the inner tube 32 are engaged with each other by a screw thread, so that the installation is easy and the installation strength is high, and the distance between the outer tube 31 and the inner tube 32 can be properly adjusted, so that the size of the guide channel 33 can be changed, and the flow rate of the compressed air can be further adjusted.

Further, the outer tube 31 is provided with an air inlet 311, and the air inlet 311 communicates with the guide passage 33 such that the compressed air can be introduced into the guide passage 33 through the air inlet 311.

Referring to fig. 1-2, a wicking apparatus in an embodiment of a second aspect of the utility model includes a suction fitting according to any of the above.

Further, the liquid suction device also comprises a liquid conveying joint 1, a gas conveying device 2 and a liquid storage barrel 4. The first ends of the main channels 34 in the liquid delivery connector 1 and the air suction connector are both connected with the liquid storage barrel 4, and the gas delivery device 2 is communicated with the guide channel 33 in the air suction connector. The infusion connector 1 is used for guiding target liquid into the liquid storage barrel 4, the air conveying device 2 is used for guiding compressed air into the air extraction connector, and the air extraction connector is used for extracting air in the liquid storage barrel 4 to form negative pressure, so that the target liquid is conveyed into the liquid storage barrel 4 due to pressure difference.

Further, the first ends of the infusion connector 1 and the main channel 34 are detachably connected with the liquid storage barrel 4 and can be conveniently detached after the liquid suction work is finished.

Further, the first ends of the infusion joint 1 and the main channel 34 are both arranged on the upper surface of the liquid storage barrel 4, so that the situation that the infusion joint 1 or the suction joint cannot be continuously sucked due to the blockage of the infusion joint 1 or the suction joint by target liquid after the liquid level rises is avoided.

Further, the air delivery device 2 comprises an air valve 21 and an air pipe 22, the outer pipe 31 is provided with an air inlet 311, the air inlet 311 is communicated with the guide passage 33, and the air pipe 22 is communicated with the air inlet 311 through the air valve 21. The air valve 21 is used for controlling the input of compressed air, and the input of compressed air can be stopped in time when the liquid suction work is finished.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.

Claims

1. An air extraction joint, comprising: the air suction connector body (3), the air suction connector body (3) is provided with a guide channel (33) and a main channel (34), the guide channel (33) is communicated with the main channel (34), the first end of the main channel (34) is used for being communicated with a container, an air outlet (35) is formed at the second end of the main channel (34), air sequentially passes through the guide channel (33) and the main channel (34) and then flows out of the air outlet (35), and the included angle between the air flowing direction at the connection position of the guide channel (33) and the air flowing direction at the connection position of the main channel (34) and the air flowing direction at the air outlet (35) is smaller than 90 degrees.

2. A suction fitting according to claim 1, wherein: the channel cross-sectional area of the guide channel (33) decreases gradually in the air flow direction.

3. A suction fitting according to claim 1, wherein: the air suction joint body (3) further comprises an outer pipe (31) and an inner pipe (32), the inner pipe (32) is used for being communicated with a container, the outer pipe (31) is sleeved outside the inner pipe (32), the outer pipe (31) is at least divided into a first pipe section (312) and a second pipe section (313), the first pipe section (312) and the inner space of the inner pipe (32) are jointly combined into the main channel (34), and a guide channel (33) is formed between the inner wall of the second pipe section (313) and the outer wall of the inner pipe (32).

4. A suction fitting according to claim 3, wherein: the outer pipe (31) and the inner pipe (32) are connected through thread engagement.

5. A suction fitting according to claim 3, wherein: the outer pipe (31) is provided with an air inlet (311), and the air inlet (311) is communicated with the guide channel (33).

6. A pipetting device comprising a suction attachment as claimed in any one of claims 1 to 5.

7. The wicking apparatus of claim 6, wherein: the liquid suction device further comprises a liquid infusion connector (1), a gas transmission device (2) and a liquid storage barrel (4), the first ends of the liquid infusion connector (1) and the main channel (34) are connected with the liquid storage barrel (4), and the gas transmission device (2) is communicated with the guide channel (33).

8. The wicking apparatus of claim 7, wherein: the infusion connector (1) and the first end of the main channel (34) are detachably connected with the liquid storage barrel (4).

9. The wicking apparatus of claim 7, wherein: the infusion joint (1) and the first end of the main channel (34) are both arranged on the upper surface of the liquid storage barrel (4).

10. The wicking apparatus of claim 7, wherein: the air delivery device (2) comprises an air valve (21) and an air pipe (22), the air suction connector body (3) is provided with an air inlet (311), the air inlet (311) is communicated with the guide channel (33), and the air pipe (22) is communicated with the air inlet (311) through the air valve (21).