A kind of battery PET packaging sealant mixer

Abstract

The utility model discloses a kind of PET packaging sealant mixers for battery, including stirring kettle body (1), temperature adjusting jacket (2) is equipped outside stirring kettle body (1), stirring kettle body (1) is equipped with stirring mechanism (3) in;The stirring mechanism (3) includes stirring shaft (31), stirring shaft (31) bottom is equipped with anchor type stirring paddle (32), anchor type stirring paddle (32) upper is equipped with spiral stirring paddle (33), the middle part of stirring shaft (31) is equipped with dispersion disc assembly (34), the top of stirring shaft (41) is also equipped with the driving mechanism (35) located above stirring kettle body (1).The utility model has the characteristics of being able to effectively improve the uniformity of PET resin dispersion.

Description

Technical Field

[0001] This utility model relates to a PET encapsulation sealant production equipment, and more particularly to a mixer for battery PET encapsulation sealant. Background Technology

[0002] PET sealant for batteries, as a special colloid designed specifically for battery encapsulation and insulation, plays a crucial role. It effectively seals the battery casing, preventing electrolyte leakage and potential safety hazards such as electric shock. Simultaneously, the sealant protects the battery from external environmental factors such as moisture, oxygen, and microorganisms, ensuring its durability and stability. Currently, the raw materials for PET sealant production mainly include PET (polyethylene terephthalate) resin, solvents, and additives (plasticizers, curing agents, stabilizers, defoamers), which are mixed using a stirring container. However, because PET resin is prone to agglomeration, the stirring paddles of traditional stirring containers struggle to completely disperse it during mixing, resulting in uneven dispersion and affecting product quality. Therefore, existing stirring containers suffer from uneven dispersion issues. Summary of the Invention

[0003] The purpose of this invention is to provide a mixer for PET encapsulation sealant used in batteries. This invention effectively improves the uniformity of PET resin dispersion.

[0004] The technical solution of this utility model is as follows: A mixer for PET encapsulation sealant for batteries includes a mixing vessel body, a temperature regulating jacket outside the mixing vessel body, and a mixing mechanism inside the mixing vessel body; the mixing mechanism includes a mixing shaft, an anchor-type mixing paddle at the bottom of the mixing shaft, a spiral mixing paddle above the anchor-type mixing paddle, a dispersion disk assembly in the middle of the mixing shaft, and a drive mechanism located above the mixing vessel body at the top of the mixing shaft.

[0005] In the aforementioned mixer for PET encapsulation sealant for batteries, the dispersion disc assembly includes a circular base disc fixed in the middle of the stirring shaft. An upper toothed ring and a lower toothed ring are respectively provided above and below the circular base disc. The surface of the circular base disc is also provided with oblique through holes. The upper toothed ring includes a set of serrated blades distributed in a ring, and the lower toothed ring includes a set of comb-shaped structures distributed in a ring with a tooth pitch of 2-5 mm.

[0006] In the aforementioned mixer for PET encapsulation sealant for batteries, the serrated blades and the comb-like structure are staggered.

[0007] In the aforementioned mixer for PET encapsulation sealant for batteries, the outer circumferential surface of the circular base plate is provided with a spiral groove.

[0008] In the aforementioned mixer for PET encapsulation sealant for batteries, the inclination angle of the oblique through hole is 30-45°.

[0009] In the aforementioned mixer for PET encapsulation sealant for batteries, the bottom surface of the mixing vessel is an inclined surface structure with an inclination angle of 10-15°.

[0010] In the aforementioned mixer for PET encapsulation sealant for batteries, a vacuum pump is also provided at the top of the mixing vessel.

[0011] Compared with existing technologies, this invention optimizes and improves the stirring mechanism. By combining an anchor-type stirring paddle and a spiral-type stirring paddle, the components inside the reactor can be effectively stirred. Furthermore, the anchor-type paddle, close to the inner wall of the reactor, effectively reduces the adhesion of adhesive from the bottom inside the reactor. A dispersion disc assembly is installed in the central region of the reactor to break up agglomerated PET resin particles, improving the dispersion effect. Through the synergy of these structures, the stirring effect is effectively improved, thereby ensuring product quality. In summary, this invention effectively improves the uniformity of PET resin dispersion. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a distribution view of the upper gear rings;

[0014] Figure 3 This is a distribution view of the lower gear rings.

[0015] The labels in the attached diagram are as follows: 1-stirring vessel body, 2-temperature regulating jacket, 3-stirring mechanism, 4-vacuum pump, 31-stirring shaft, 32-anchor-type stirring paddle, 33-spiral-type stirring paddle, 34-dispersion disk assembly, 35-drive mechanism, 341-circular base disk, 342-upper toothed ring, 343-lower toothed ring, 344-oblique through hole, 345-serrated blade, 346-comb structure. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example. A mixer for PET encapsulation sealant for batteries, configured as follows: Figure 1-3As shown, the apparatus includes a stirring vessel body 1, a temperature regulating jacket 2 outside the stirring vessel body 1, and a stirring mechanism 3 inside the stirring vessel body 1. The stirring mechanism 3 includes a stirring shaft 31, an anchor-type stirring paddle 32 at the bottom of the stirring shaft 31, a spiral stirring paddle 33 above the anchor-type stirring paddle 32, a dispersion disk assembly 34 in the middle of the stirring shaft 31, and a drive mechanism 35 located above the stirring vessel body 1 at the top of the stirring shaft 31.

[0018] The dispersion disk assembly 34 includes a circular base disk 341 fixed in the middle of the stirring shaft 31. An upper toothed ring 342 and a lower toothed ring 343 are respectively provided above and below the circular base disk 341. The surface of the circular base disk 341 is also provided with an oblique through hole 344. The upper toothed ring 342 includes a set of serrated blades 345 distributed in a ring, and the lower toothed ring 343 includes a set of comb-shaped structures 346 distributed in a ring with a tooth pitch of 2-5mm.

[0019] The serrated blades 345 and the comb-like structure 346 are misaligned.

[0020] The outer circumferential surface of the circular base disk 341 is provided with a spiral groove.

[0021] The inclination angle of the oblique through hole 344 is 30-45°.

[0022] The bottom surface of the stirring vessel 1 is an inclined surface structure with an inclination angle of 10-15°.

[0023] A vacuum pump 4 is also installed on the top of the stirring vessel 1.

[0024] A cavity is formed between the temperature regulating jacket and the stirred tank body, and the cavity is filled with circulating heat transfer oil. The circulating heat transfer oil is connected to an external circulating heating mechanism, and a temperature sensor is installed inside the stirred tank body to detect the temperature. This sensor works in conjunction with the circulating heating mechanism to facilitate temperature regulation. This application can achieve the above functions using a conventional temperature control regulator.

[0025] The upper toothed ring consists of a set of circularly distributed serrated blades with a cutting edge angle of 15-20°, used for the initial cutting of large particles.

[0026] The lower toothed ring consists of a set of annularly distributed micro-comb teeth (tooth pitch 2-5mm), which are arranged at a 30° offset from the upper serrated blades to enhance eddy shearing.

[0027] Preferably, the diameter of the oblique through hole is 3-8mm, and it penetrates the circular base plate at an angle of 30-60°, so that the colloid generates secondary shear when it passes through.

[0028] The spiral grooves on the outer circumference of the circular base plate can force the glue to move along the spiral path, further improving the dispersion effect.

[0029] When the dispersion disc rotates, turbulent zones are generated in the upper and lower toothed rings. PET agglomerates are cut by the serrations and deagglomerated under high shear force as they pass through the guide holes. Simultaneously, the colloid flows axially and radially through the toothed rings and guide holes, achieving full-area dispersion. Furthermore, the serrated blades and comb-like structure reduce foam generation during dispersion by shearing and breaking bubbles as the adhesive passes between the teeth.

[0030] The reactor body is a sealed structure, with a feed inlet and control valve at the top, and a discharge outlet and discharge control valve at the bottom. A rinsing window is also provided at the top of the reactor body for inserting cleaning equipment such as a rotary spray head to clean the interior.

[0031] During cleaning, first open the bottom discharge control valve to completely drain the residual glue, then rinse with solvent (inject a low-viscosity solvent (such as methyl ethyl ketone or ethanol, at a volume of 10-15% of the tank volume), stir at low speed (50-100 rpm) for 5 minutes to dissolve the residual glue), drain the solvent, then insert the rotating spray head to rinse the inside again. Repeat the rinsing several times to complete the internal cleaning.

[0032] The production stirring process of this utility model is as follows: Following the production process of PET encapsulation sealant, the corresponding raw materials are added sequentially to the stirring vessel. The temperature inside the reactor is controlled by a temperature regulating jacket to meet production requirements. The drive mechanism operates, rotating the stirring shaft. The stirring shaft drives the anchor-type stirring paddle, the spiral stirring paddle, and the dispersion disc assembly to rotate, stirring and dispersing the components inside the reactor, ensuring uniform mixing and thorough dispersion. During the stirring process, a vacuum pump evacuates the reactor (vacuum degree -0.095 MPa) for degassing, reducing bubble formation.

Claims

1. A mixer for PET encapsulation sealant for batteries, characterized in that: The system includes a stirring vessel body (1), a temperature regulating jacket (2) outside the stirring vessel body (1), and a stirring mechanism (3) inside the stirring vessel body (1). The stirring mechanism (3) includes a stirring shaft (31), an anchor-type stirring paddle (32) at the bottom of the stirring shaft (31), a spiral stirring paddle (33) above the anchor-type stirring paddle (32), a dispersion disk assembly (34) in the middle of the stirring shaft (31), and a drive mechanism (35) located above the stirring vessel body (1) at the top of the stirring shaft (31). The dispersion disk assembly (34) includes a circular base disk (341) fixed in the middle of the stirring shaft (31). An upper toothed ring (342) and a lower toothed ring (343) are provided above and below the circular base disk (341), respectively. The surface of the circular base disk (341) is also provided with an oblique through hole (344). The upper toothed ring (342) includes a set of serrated blades (345) arranged in a ring. The lower toothed ring (343) includes a set of comb-shaped structures (346) arranged in a ring with a tooth pitch of 2-5 mm.

2. The mixer for PET encapsulation sealant for batteries according to claim 1, characterized in that: The serrated blades (345) are misaligned with the comb structure (346).

3. The mixer for PET encapsulation sealant for batteries according to claim 1, characterized in that: The outer circumferential surface of the circular base plate (341) is provided with a spiral groove.

4. The mixer for PET encapsulation sealant for batteries according to claim 1, characterized in that: The inclination angle of the oblique through hole (344) is 30-45°.

5. A mixer for PET encapsulation sealant for batteries according to claim 1, characterized in that: The bottom surface of the stirring vessel (1) is an inclined surface structure with an inclination angle of 10-15°.

6. A mixer for PET encapsulation sealant for batteries according to claim 1, characterized in that: A vacuum pump (4) is also provided on the top of the stirred tank (1).

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