CN210837929U - Liquid injection needle and liquid injection device - Google Patents
Liquid injection needle and liquid injection device Download PDFInfo
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- CN210837929U CN210837929U CN201921593265.1U CN201921593265U CN210837929U CN 210837929 U CN210837929 U CN 210837929U CN 201921593265 U CN201921593265 U CN 201921593265U CN 210837929 U CN210837929 U CN 210837929U
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- liquid
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- inner cavity
- injection needle
- needle body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a liquid injection needle and a liquid injection device, the liquid injection needle comprises a needle body which is provided with a liquid channel and an inner cavity communicated with the liquid channel, and the inner cavity is positioned at the end part of the needle body; the liquid separation head is arranged in the inner cavity and connected with the needle body, a liquid outlet gap is formed between the liquid separation head and the inner wall of the inner cavity, the liquid separation head is provided with a plurality of flow distribution holes for communicating the liquid channel with the liquid outlet gap, and the liquid outlet gap forms an annular nozzle at the end part of the needle body. The liquid injection device comprises the liquid injection needle. Liquid is led in from the outside through the liquid passage on the needle body during notes liquid, and liquid flows in the branch liquid head from the liquid passage again, and after a plurality of portholes on the branch liquid head shunted liquid, liquid pressure reduced, liquid flows through the play liquid clearance that needle intracavity inner wall and branch liquid head formed again, can evenly disperse liquid, and liquid outwards flows out liquid from the spout at last, makes liquid be cyclic annular outflow, can avoid during the time of the liquid velocity of flow too fast forming a strong water column of impact force to impact the container and cause liquid to splash.
Description
Technical Field
The invention is used in the field of fluid injection, and particularly relates to an injection needle and an injection device.
Background
Soft package lithium ion batteries have the advantages of high energy, high battery voltage, wide working temperature range, long storage life and small volume, and have been widely used in electronic devices such as video cameras, notebook computers and the like. In the production process of the soft package lithium battery, liquid injection is a crucial step, and specifically, the electrolyte is pumped into a formed soft package lithium battery shell firstly and then is filled into the soft package lithium battery shell, so that the battery core is completely wrapped by the electrolyte. The equipment for completing the liquid injection process is a liquid injection device and a liquid injection needle thereof.
In the prior art, when fluid is injected through a liquid injection needle or the filling flow rate is too high, the situation of liquid splashing is often generated.
SUMMERY OF THE UTILITY MODEL
The invention aims to solve at least one of the technical problems in the prior art, and provides a liquid injection needle and a liquid injection device, which can divide liquid into two parts and then flow out annularly during liquid injection, so that splashing caused by direct impact of a water column formed when the liquid flow rate is too high on a container is avoided.
The utility model provides a technical scheme that its technical problem adopted is:
in a first aspect, an injection needle comprises:
the needle body is provided with a liquid channel and an inner cavity communicated with the liquid channel, and the inner cavity is positioned at the end part of the needle body;
the liquid separation head is arranged in the inner cavity and connected with the needle body, a liquid outlet gap is formed between the liquid separation head and the inner wall of the inner cavity, the liquid separation head is provided with a plurality of flow distribution holes for communicating the liquid channel with the liquid outlet gap, and the liquid outlet gap forms an annular nozzle at the end part of the needle body.
With reference to the first aspect, in certain implementation manners of the first aspect, the liquid separation head further includes an axial channel, the axial channel is connected to the liquid channel, and a plurality of the diversion holes are disposed on a side wall of the axial channel.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the flow dividing hole is inclined toward the spout.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the end portion of the inner cavity is provided with an outward-expanding trumpet-shaped outlet, the liquid separation head is provided with an outward-expanding trumpet-shaped bottom, and an outward-expanding nozzle is formed between the trumpet-shaped bottom and the trumpet-shaped outlet.
With reference to the first aspect and the implementations described above, in certain implementations of the first aspect, the trumpet-shaped bottom is recessed inside the trumpet-shaped outlet.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the liquid distribution head is provided with a plurality of the diversion holes, and the plurality of the diversion holes are uniformly distributed along a circumferential direction of the liquid distribution head.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the needle body is provided with a joint at an end far away from the liquid separation head.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the inner cavity is provided with an internal thread, the liquid separation head is provided with an external thread, and the liquid separation head is in threaded connection with the inner cavity.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a polygonal concave hole is formed in a bottom end face of the liquid separation head.
In a second aspect, an infusion device comprises the infusion needle of the first aspect.
One of the above technical solutions has at least one of the following advantages or beneficial effects: liquid is led in from the outside through the liquid passage on the needle body during notes liquid, and liquid flows in the branch liquid head from the liquid passage again, and after a plurality of portholes on the branch liquid head shunted liquid, liquid pressure reduced, liquid flows through the play liquid clearance that needle intracavity inner wall and branch liquid head formed again, can evenly disperse liquid, and liquid outwards flows out liquid from the spout at last, makes liquid be cyclic annular outflow, can avoid during the time of the liquid velocity of flow too fast forming a strong water column of impact force to impact the container and cause liquid to splash.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of one embodiment shown in FIG. 1;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated 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 present invention, "a plurality" means one or more, "a plurality" means two or more, "more than", "less than", "more than", and the like, which means that the number is not included; the terms "above", "below", "within" and the like are to be understood as including the number. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless otherwise explicitly defined, the terms "set," "mounted," "connected," and the like are to be understood in a broad sense, and may be directly connected or indirectly connected through an intermediate medium, for example; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The technical field can reasonably determine the specific meaning of the words in the invention by combining the specific contents of the technical scheme.
Referring to fig. 1, 2 and 3, an embodiment of the present invention provides an injection needle 1, including a needle body 10 and a liquid separation head 20, wherein the needle body 10 is provided with a liquid channel 12 and an inner cavity 14 communicated with the liquid channel, and the inner cavity 14 is located at an end of the needle body 10; the liquid separation head 20 is arranged in the inner cavity 14 and connected with the needle body 10, a liquid outlet gap 30 is formed between the liquid separation head 20 and the inner wall of the inner cavity 14, the liquid separation head is provided with a plurality of flow separation holes 23 for communicating the liquid channel 12 with the liquid outlet gap, and the liquid outlet gap 30 forms an annular nozzle 40 at the end part of the needle body 10.
Referring to fig. 2 and 3, the liquid flow path is as shown by the arrows in the figure, after the liquid is introduced through the liquid channel 12, the liquid is divided by the dividing holes 23 and flows into the liquid outlet gap 30 to be uniformly distributed, and finally, the liquid flows out through the nozzle 40 to form the annular liquid. During the process, a water column with strong impact force is prevented from being formed when the liquid flow velocity is too high, impacting the container and causing liquid splashing.
Referring to fig. 1 and 2, the needle body 10 is provided with a connector 11 at an end remote from the dispensing head, the connector 11 being adapted to be connected to an external device for supplying liquid. When the fluid is injected through the injection needle 1, the connector 11 needs to be connected to an external device to introduce external fluid into the fluid channel 12, and it is understood that the connector 11 may be connected to the external device by using a snap connection, an interference fit, welding, a threaded connection, or the like.
The shape of the connector 11 may be designed according to the structure of the external device to be actually connected, and it may be configured in a shape having a hook, a straight pipe, a groove, or a protrusion, etc. to be better connected with the external device. Referring to fig. 1 and 2, preferably, in this embodiment, the outer diameter of the connector is configured as a hollow shaft smaller than the outer diameter of the needle body 10 to facilitate the insertion into an external device for connection, and the fluid channel 12 passes through the connector 11 and the needle body 10.
The shape of the needle body 10 can be set into an arc shape, a bent shape, a straight tube shape and the like according to the actual working condition of the outside, so that the liquid can be conveniently transferred in the actual working condition. Preferably, referring to fig. 2, the needle body 10 is provided in a straight tubular shape in this embodiment. Accordingly, the fluid channel can be configured with different cross-sectional shapes with the needle body 10.
Referring to fig. 3, the lumen 14 of the needle body 10 and the liquid separation head 20 can be connected with the front end 21 of the liquid separation head through the front end 15 of the lumen, and the connection mode can be interference fit, snap connection, threaded connection, etc. Preferably, in the present embodiment, the liquid separation head front end portion 21 is provided with an external thread, the inner cavity front end portion 15 is provided with an internal thread, and the liquid separation head 20 and the inner cavity 14 are connected in a threaded manner.
The liquid separation head 20 further comprises an axial channel 22, referring to fig. 3, after the liquid separation head 20 is connected with the needle body 10, the axial channel 22 is connected with the liquid channel 12, and a plurality of shunting holes 23 are arranged on the side wall of the axial channel 22. The liquid channel 12 guides the liquid into the axial channel 22 and then flows into the diversion hole 23, the sectional area of the axial channel 22 is equal to that of the liquid channel 12, and the axial channel 22 can be properly adjusted to be larger or smaller on the premise of ensuring the liquid in the liquid channel 12 and the axial channel 22 to flow smoothly. The axial channel 22 can be designed into other structures with different shapes according to the use requirement of the liquid dividing head 20 in actual conditions. Referring to fig. 3, in the preferred embodiment, the axial channel 22 is a straight tubular channel, and the bottom end of the axial channel is chamfered 26 to facilitate machining.
As shown in fig. 2 and 3, after the liquid in the needle body 10 flows into the axial channel 22 of the liquid separation head from the liquid separation channel 12, the liquid in the axial channel 22 is separated by the flow separation holes 23, the number of the flow separation holes 23 can be determined according to the flow rate of the actually introduced liquid, when the liquid flow rate is large, a plurality of flow separation holes can be arranged, and the size of the flow separation holes can also be arranged according to actual needs. The distributing holes 23 are circumferentially distributed along the liquid distributing head and guide the liquid to the liquid outlet gap 30, preferably, in this embodiment, 4 distributing holes 23 are uniformly distributed along the circumferential direction of the liquid distributing head, the liquid is distributed and then flows into the liquid outlet gap 30, and the nozzle 40 uniformly sprays the liquid.
Referring to fig. 3, the diversion holes 23 may be radial diversion holes or inclined towards the direction of the spout 40, and preferably, in the present embodiment, the diversion holes 23 are inclined towards the direction of the spout, so that the liquid can rapidly flow into the liquid outlet gap 30 along the inclined direction of the spout.
As shown in fig. 3, the liquid outlet gap 30 is composed of an inner wall of the inner cavity and the liquid distribution head 20, an annular gap formed by the inner wall of the inner cavity and the liquid distribution head is the liquid outlet gap 30 through which the liquid flows out, an inlet of the liquid outlet gap 30 is communicated with an outlet of the diversion hole 23, and the liquid after being diverted by the diversion hole is uniformly dispersed by the liquid outlet gap.
Referring to fig. 3, the end of the inner cavity is provided with an outward-expanding trumpet-shaped outlet 13, the liquid separation head is provided with an outward-expanding trumpet-shaped bottom 24, and an outward-expanding nozzle 40 is formed between the trumpet-shaped bottom 24 and the trumpet-shaped outlet 13. The liquid flows into the container for bearing the liquid in a ring shape after passing through the outward-expanded spout 40, so that the liquid is prevented from forming a water column with strong impact force.
Referring to fig. 3, in the preferred embodiment, the trumpet-shaped bottom 24 is sunk inside the trumpet-shaped outlet 13, and the sinking is represented by the trumpet-shaped outlet 13 at the end of the inner cavity surrounding the trumpet-shaped bottom 24 of the liquid separation head, and the trumpet-shaped bottom 24 is inwardly sunk relative to the trumpet-shaped outlet 13. The liquid separation head retracts inwards to enable the nozzle 40 to expand outwards, the water outlet area of the nozzle is increased, the pressure of liquid is reduced, and splashing is prevented.
As shown in FIG. 3, the bottom end surface of the liquid separation head is provided with a polygonal concave hole 25, and the polygonal concave hole 25 can be set to be a corresponding wrench position according to the connection mode in practical use, so as to conveniently screw or disassemble the liquid separation head.
The embodiment of the invention also provides a liquid injection device which comprises the liquid injection needle 1 in any embodiment. The structural features and technical effects of the liquid injection needle 1 have been described in detail above, and are not described in detail.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. An injection needle, comprising:
the needle body is provided with a liquid channel and an inner cavity communicated with the liquid channel, and the inner cavity is positioned at the end part of the needle body;
the liquid separation head is arranged in the inner cavity and connected with the needle body, a liquid outlet gap is formed between the liquid separation head and the inner wall of the inner cavity, the liquid separation head is provided with a plurality of flow distribution holes for communicating the liquid channel with the liquid outlet gap, and the liquid outlet gap forms an annular nozzle at the end part of the needle body.
2. The injection needle according to claim 1, characterized in that: the liquid separation head further comprises an axial channel, the axial channel is connected with the liquid channel, and a plurality of flow distribution holes are formed in the side wall of the axial channel.
3. The injection needle according to claim 2, characterized in that: the flow dividing hole inclines towards the nozzle.
4. The liquid injection needle according to claim 3, characterized in that: the inner chamber tip is equipped with the loudspeaker form export that expands outward, divide the liquid head to be equipped with the loudspeaker form bottom that expands outward, loudspeaker form bottom with form the spout that expands outward between the loudspeaker form export.
5. The liquid injection needle according to claim 4, characterized in that: the trumpet-shaped bottom is sunk at the inner side of the trumpet-shaped outlet.
6. The injection needle according to claim 1, characterized in that: the liquid separation head is provided with a plurality of the shunting holes, and the shunting holes are uniformly distributed along the circumferential direction of the liquid separation head.
7. The injection needle according to claim 1, characterized in that: the needle body is equipped with the joint in the one end of keeping away from the branch liquid head.
8. The injection needle according to claim 1, characterized in that: the inner cavity is provided with an internal thread, the liquid separation head is provided with an external thread, and the liquid separation head is in threaded connection with the inner cavity.
9. The liquid injection needle according to claim 7, characterized in that: and a polygonal concave hole is formed in the end face of the bottom of the liquid separation head.
10. An injection device comprising the injection needle according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921593265.1U CN210837929U (en) | 2019-09-20 | 2019-09-20 | Liquid injection needle and liquid injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921593265.1U CN210837929U (en) | 2019-09-20 | 2019-09-20 | Liquid injection needle and liquid injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210837929U true CN210837929U (en) | 2020-06-23 |
Family
ID=71261837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921593265.1U Active CN210837929U (en) | 2019-09-20 | 2019-09-20 | Liquid injection needle and liquid injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210837929U (en) |
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2019
- 2019-09-20 CN CN201921593265.1U patent/CN210837929U/en active Active
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