Anti-falling liquid injection nozzle structure

Abstract

The utility model discloses an anti-falling liquid injection nozzle structure, relates to the technical field of battery manufacturing equipment, and solves the problems that an existing liquid injection nozzle is complicated in structure, has no locking structure inside, is easy to fall off during liquid injection, and is inconvenient to maintain. The device is connected to a liquid injection pipe and comprises a sleeve, the lower end of the liquid injection pipe is connected into the sleeve in a threaded mode, an upper communicating hole and a lower limiting hole which are communicated with each other are formed in the sleeve, the diameter of the lower limiting hole is smaller than that of the upper communicating hole, and a step face is formed between the lower limiting hole and the upper communicating hole; the upper end of the liquid injection nozzle body is communicated with the liquid injection pipe, and the lower end of the liquid injection nozzle body extends into / out of the lower limiting hole. The effects that the liquid injection nozzle is convenient to disassemble, meanwhile, splashing during liquid injection is reduced, installation and maintenance are convenient, and the falling possibility of the liquid injection nozzle is reduced are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing equipment technical field, especially a kind of anti-falling liquid injection nozzle structure. BACKGROUND

[0002] In the battery production process, to solve the problem of electrolyte splashing caused by excessive impact when electrolyte is injected, a liquid distribution head can be installed in the liquid injection needle to reduce the impact when electrolyte is injected. However, the liquid injection nozzle in the above method not only has a complex structure, but also lacks a locking structure inside. By directly sleeving the liquid injection nozzle on the stainless steel pipeline, it will also cause the liquid injection nozzle to loosen during liquid injection and movement, causing the liquid injection nozzle to fall during liquid injection, which is not convenient for device maintenance. UTILITY MODEL CONTENT

[0003] The utility model aims to provide a kind of anti-falling liquid injection nozzle structure, which can conveniently disassemble the liquid injection nozzle, reduce splashing during liquid injection, facilitate installation and maintenance, and reduce the possibility of liquid injection nozzle falling.

[0004] The above technical purpose of the utility model is achieved by the following technical solutions:

[0005] A kind of anti-falling liquid injection nozzle structure is connected to the liquid injection pipe, including a sleeve, the lower end of the liquid injection pipe is threadedly connected to the sleeve, the sleeve is provided with an upper communication hole and a lower limiting hole that are in communication with each other, the diameter of the lower limiting hole is smaller than that of the upper communication hole, and a stepped surface is formed between the upper communication hole and the lower limiting hole, a liquid injection nozzle body is further provided in the upper communication hole, a ring of protrusions is provided on the outer periphery of the liquid injection nozzle body, the two ends of the protrusions abut against the liquid injection pipe and the stepped surface respectively, the upper end of the liquid injection nozzle body is connected to the liquid injection pipe, and the lower end extends into / outside the lower limiting hole.

[0006] By adopting the above technical solutions, the liquid injection nozzle body is installed in the sleeve, and the liquid injection nozzle body can be tightly abutted between the sleeve and the liquid injection pipe by installing the sleeve at the lower end of the liquid injection pipe. This facilitates installation and disassembly, and reduces the possibility of liquid injection nozzle falling.

[0007] Further, the liquid injection nozzle body is rotatably connected to the sleeve.

[0008] By adopting the above technical solutions, the structure of the rotary body facilitates the installation of the liquid injection nozzle body, and the installation does not need to maintain a specific angle. At the same time, it is convenient for processing, and improves the stability of liquid injection.

[0009] Further, the lower end of the liquid injection nozzle body is closed, and a plurality of inclined downward liquid injection through holes are provided on the outer periphery, there is a gap between the lower end of the outer periphery of the liquid injection nozzle body and the lower limiting hole, and the outer end of the liquid injection through hole faces the gap and discharges outward.

[0010] By adopting the technical scheme, the liquid injection port is arranged as a plurality of rings, so that the electrolyte is injected in all directions of the outer periphery, the splashing of the electrolyte during injection is reduced, the electrolyte can enter the battery shell along the pipe wall outward, the stability of the electrolyte injection is further improved, and the problems such as splashing caused by injection of the electrolyte in one direction are avoided.

[0011] Further, the lower end of the liquid injection nozzle body is detachably connected with a horn-shaped circular ring, the outer diameter of the horn-shaped circular ring gradually expands downward, and the horn-shaped circular ring is arranged in the direction of downward liquid outlet of the liquid injection hole.

[0012] By adopting the technical scheme, the horn-shaped circular ring avoids the electrolyte from reflowing due to interference problems such as the pipe wall during injection, the injection of the electrolyte in all directions is ensured through the guiding effect, and the stability of the electrolyte injection process is improved.

[0013] Further, the maximum outer diameter of the horn-shaped circular ring is greater than the inner diameter of the lower limit hole.

[0014] By adopting the technical scheme, the injection angle of the electrolyte is further expanded, and the stability of the injection process is improved.

[0015] Further, the lower end of the liquid injection nozzle body is provided with a fixing screw, and the middle of the horn-shaped circular ring is connected with a connecting plate, the fixing screw passes through the connecting plate upwardly and is threadedly connected in the liquid injection nozzle body.

[0016] By adopting the technical scheme, the horn-shaped circular ring part is convenient to disassemble, and the horn-shaped circular ring can be disassembled as needed, for example, when the horn-shaped circular ring is smaller than the liquid injection port, the horn-shaped circular ring can be inserted into the liquid injection port to ensure the stability of the injection process, and when the liquid injection port is smaller and the horn-shaped circular ring structure cannot be inserted into the liquid injection port, the horn-shaped circular ring can be disassembled or replaced.

[0017] Further, a sealing groove is formed in the upper end of the liquid injection nozzle body, an O-shaped sealing ring is arranged in the sealing groove, and the lower end of the liquid injection pipe abuts on the upper side of the O-shaped sealing ring.

[0018] By adopting the technical scheme, the leakage of the electrolyte is reduced, and the electrolyte is prevented from directly leaking out between the liquid injection nozzle body and the sleeve.

[0019] Further, the liquid injection pipe comprises a ring-shaped sealing ring connected at the lower end, and the ring-shaped sealing ring abuts on the upper end face of the liquid injection nozzle body.

[0020] By adopting the technical scheme, the sealing performance of the liquid injection structure is further improved through cooperation of the planar sealing ring and the O-shaped sealing ring, and the leakage during liquid injection is avoided.

[0021] In summary, the utility model has the following beneficial effects:

[0022] The injection nozzle body is mounted in the sleeve, and is mounted at the lower end of the injection tube through the sleeve, and the injection nozzle body can abut against the sleeve and the injection tube, facilitating installation and dismounting, and reducing the possibility of falling of the injection nozzle; only simple processing is required on the outer periphery of the injection tube, reducing the production cost of the injection needle, and further reducing the maintenance cost of the battery injection nozzle.

[0023] The injection port is provided with a plurality of rings, so that the electrolyte is injected in all directions of the outer periphery, reducing the splashing of the electrolyte during injection, and the electrolyte can enter the battery shell along the pipe wall, further improving the stability of the electrolyte injection, avoiding the splashing caused by the electrolyte injection in one direction; and the horn-shaped ring avoids the electrolyte from flowing again due to the interference of the pipe wall during injection, and ensures the injection of the electrolyte in all directions through the guiding effect, improving the stability of the electrolyte injection process. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a connection structure schematic diagram of the anti-falling injection nozzle structure of the utility model;

[0025] Figure 2 is Figure 1 the enlarged structure schematic diagram of part A in the middle;

[0026] Figure 3 is Figure 1 the enlarged structure schematic diagram of part B in the middle.

[0027] In the figure, 0, injection tube; 1, sleeve; 11, upper communication hole; 12, lower limiting hole; 2, injection nozzle body; 21, convex ring; 22, injection through hole; 3, horn-shaped ring; 31, fixing screw; 32, connecting plate; 4, O-shaped sealing ring; 5, annular sealing ring. DETAILED DESCRIPTION

[0028] The specific embodiments of the utility model will be further described in combination with the drawings, and the embodiments do not constitute a limitation on the utility model. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the application.

[0029] An anti-falling injection nozzle structure, such as Figure 1As shown, the connecting pipe 0 is connected to the injection pipe 0, and includes a sleeve 1, the lower end of the injection pipe 0 is threadedly connected to the sleeve 1, the sleeve 1 has an upper communication hole 11 and a lower limiting hole 12 which are in communication with each other, the diameter of the lower limiting hole 12 is smaller than that of the upper communication hole 11, and a stepped surface is formed between the upper communication hole 11 and the lower limiting hole 12. In the embodiment, the upper half of the upper communication hole 11 is provided with internal threads, and the outer periphery of the lower end of the injection pipe 0 is provided with corresponding external threads, which can be pipe threads or other threaded structures, to improve the connection stability and better help the injection nozzle structure to be locked to the lower end of the injection pipe 0, thereby avoiding the problem of the injection nozzle part falling off.

[0030] As shown in Figure 1 , the upper communication hole 11 is provided with an injection nozzle body 2 for injecting electrolyte into the battery injection port, the upper end of the injection nozzle body 2 is integrally connected with a ring 21, the two ends of the ring 21 abut against the injection pipe 0 and the stepped surface respectively, the upper end of the injection nozzle body 2 is in communication with the injection pipe 0, and the lower end extends into / out of the lower limiting hole 12;

[0031] In the embodiment, the upper end of the injection nozzle body 2 is a ring 21 structure with an outer diameter matching the upper communication hole 11, and the lower end is a main body structure with an outer diameter matching the lower limiting hole 12, and the lower end of the injection nozzle body 2 is flush with the lower end of the lower limiting hole 12.

[0032] As shown in Figure 1 and Figure 2 , the injection nozzle body 2 is rotatably connected in the sleeve 1, that is, the injection nozzle body 2 and the sleeve 1 are both rotary body structures, and the angle of the injection nozzle body 2 can be adjusted at will in the sleeve 1;

[0033] The lower end of the injection nozzle body 2 is closed, and a plurality of inclined downward injection holes 22 are formed in the outer periphery of the lower end of the injection nozzle body 2, and there is a gap between the outer periphery of the lower end of the injection nozzle body 2 and the lower limiting hole 12, and the outer end of the injection hole 22 faces outward to the gap; wherein, a chamfer can be formed on the outer periphery of the lower end of the injection nozzle body 2 and / or the inner periphery of the lower end of the lower limiting hole 12 to form the gap, electrolyte flows outwards along the inclined downward direction of the injection hole 22, and under the action of the gap between the injection nozzle body 2 and the lower limiting hole 12, a more uniform conical water curtain is formed, and the injection is completed downward.

[0034] As shown in Figure 1 and Figure 2As shown, the lower end of the liquid injection nozzle body 2 is detachably connected with a trumpet-shaped circular ring 3, the outer diameter of the trumpet-shaped circular ring 3 gradually expands downward, and is arranged in the downward liquid outlet direction of the liquid injection through hole 22 (i.e. the conical water curtain injection direction); in the embodiment, the maximum outer diameter of the trumpet-shaped circular ring 3 is greater than the inner diameter of the lower limiting hole 12, the lower end of the liquid injection nozzle body 2 is provided with a fixing screw 31, the trumpet-shaped circular ring 3 is integrally connected with a horizontal connecting plate 32 in the middle, after the fixing screw 31 passes through the connecting plate 32 upward, it is screw-connected in the liquid injection nozzle body 2, the detachable installation of the trumpet-shaped circular ring 3 is completed, that is, the connection can also be realized by other dismounting or fixing modes such as buckling.

[0035] As shown in Figure 1 and Figure 3 In order to ensure the sealing, a sealing groove is arranged on the upper end of the liquid injection nozzle body 2, an O-shaped sealing ring 4 is arranged in the sealing groove, and the lower end of the liquid injection pipe 0 abuts on the upper side of the O-shaped sealing ring 4; the liquid injection pipe 0 comprises a lower end connected annular sealing ring 5, the annular sealing ring 5 abuts on the upper end face of the liquid injection nozzle body 2, and the annular sealing ring 5 can be directly pasted on the lower end of the liquid injection pipe 0 by means of double-sided adhesive tape or the like.

[0036] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and the modification or equivalent replacement should also be regarded as falling within the protection scope of the technical scheme of the present application.

Claims

1. An anti-drop liquid injection nozzle structure connected to a liquid injection pipe (0), characterized in that: The invention comprises a sleeve (1), wherein the lower end of the liquid injection tube (0) is threadedly connected to the sleeve (1), wherein the sleeve (1) is provided with an upper connecting hole (11) and a lower limiting hole (12) which are connected to each other, wherein the diameter of the lower limiting hole (12) is smaller than that of the upper connecting hole (11) and a stepped surface is formed between the lower limiting hole (12) and the upper connecting hole (11), and an injection nozzle body (2) is further provided in the upper connecting hole (11), wherein the outer periphery of the injection nozzle body (2) is provided with a circle of convex ring (21), wherein the two ends of the convex ring (21) respectively abut against the liquid injection tube (0) and the stepped surface, wherein the upper end of the injection nozzle body (2) is connected to the liquid injection tube (0), and the lower end extends into / out of the lower limiting hole (12).

2. The anti-drop liquid injection nozzle structure according to claim 1, characterized in that: The liquid injection nozzle body (2) is rotatably connected to the sleeve (1).

3. The anti-drop liquid injection nozzle structure according to claim 1 or 2, characterized in that: The lower end of the liquid injection nozzle body (2) is closed, and a plurality of liquid injection through holes (22) inclined downward are provided on the outer periphery. There is a gap between the outer periphery of the lower end of the liquid injection nozzle body (2) and the lower limit hole (12), and the outer ends of the liquid injection through holes (22) discharge liquid outward toward the gap.

4. The anti-drop liquid injection nozzle structure according to claim 3, characterized in that: The lower end of the liquid injection nozzle body (2) is detachably connected to a trumpet-shaped circular ring (3), the outer diameter of which gradually expands downward and is arranged to block the direction in which liquid is discharged downward from the liquid injection through hole (22).

5. The anti-drop liquid injection nozzle structure according to claim 4, characterized in that: The maximum outer diameter of the trumpet-shaped ring (3) is greater than the inner diameter of the lower limit hole (12).

6. The anti-drop liquid injection nozzle structure according to claim 4, characterized in that: The lower end of the liquid injection nozzle body (2) is provided with a fixing screw (31), the middle of the trumpet-shaped ring (3) is connected to a connecting plate (32), and the fixing screw (31) passes through the connecting plate (32) upwards and is threadedly connected to the liquid injection nozzle body (2).

7. The anti-drop liquid injection nozzle structure according to claim 1, characterized in that: The upper end of the liquid injection nozzle body (2) is provided with a circle of sealing groove, in which a circle of O-type sealing ring (4) is provided, and the lower end of the liquid injection tube (0) abuts against the upper side of the O-type sealing ring (4).

8. The anti-drop liquid injection nozzle structure according to claim 1 or 7, characterized in that: The liquid injection tube (0) comprises a ring-shaped sealing ring (5) connected to the lower end, and the ring-shaped sealing ring (5) abuts against the upper end surface of the liquid injection nozzle body (2).

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