Clearance valve sealing structure of lithium battery coating machine

Abstract

The utility model relates to a clearance valve sealing structure of a lithium battery coating machine, which comprises a clearance valve arranged in a coating cylinder body, the clearance valve comprises a V-shaped gasket group, a rubber mat, a clearance valve connecting rod and a connecting rod lock sleeve, the V-shaped gasket group is sleeved on the clearance valve connecting rod and is screwed with the clearance valve connecting rod through the connecting rod lock sleeve, the V-shaped gasket at the top end is provided with the rubber mat, and the rubber mat is sleeved on the clearance valve connecting rod through the connecting rod lock sleeve. And the upper part of the rubber mat is connected with the gap valve cylinder body to form an integral gap valve sealing structure. Through the design of a novel sealing structure, the problems of material leakage and locking in the movement process of the connecting rod and the problem of material leakage in the operation process are solved, installation is easy and convenient, adjustment is not needed, and the service life of gap valve consumables is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium-ion batteries, and particularly relates to a gap valve sealing structure of a lithium battery coater. Background Art

[0002] In the production process of lithium-ion batteries, the coating process is the most important step in determining the safety of the electrode sheet in the production link of the electrode sheet. And the stable operation of the gap valve is a prerequisite for ensuring the appearance and size of the electrode sheet, and the sealing structure of the gap valve directly affects the appearance and size of the coated electrode sheet.

[0003] The gap valve realizes the on-off of the slurry by the way that the cylinder drives the cover plate through the connecting rod. A sealing structure is required between the connecting rod and the cylinder block. However, during the use process, due to the uncontrollability of the extrusion deformation amount and extrusion force of the gasket group, leakage or jamming occurs at the connecting rod. The existing sealing structure is that the V-shaped gasket group and the cylinder block are sealed with the connecting rod through external force extrusion deformation. However, due to the uncontrollability of the extrusion deformation amount and extrusion force of the gasket group, leakage or jamming occurs at the connecting rod, resulting in problems such as abnormal product quality and contamination and corrosion of accessories. Summary of the Utility Model

[0004] The utility model is to overcome the deficiencies in the prior art, and provides a gap valve sealing structure of a lithium battery coater, which avoids the problem of material leakage during the operation of the equipment and improves the service life of the consumables of the gap valve.

[0005] To achieve the above object, the utility model is realized through the following technical solutions. A gap valve sealing structure of a lithium battery coater includes a gap valve placed in a coating cylinder body. The gap valve includes a V-shaped gasket group, a rubber gasket, a gap valve connecting rod and a connecting rod lock sleeve. The V-shaped gasket group is sleeved on the gap valve connecting rod and is tightened with the gap valve connecting rod through the connecting rod lock sleeve. A rubber gasket is provided on the top V-shaped gasket. The upper part of the rubber gasket is connected to the gap valve cylinder body to form an overall gap valve sealing structure.

[0006] Further, the rubber gasket includes a cylinder and a cone, and the cross-sectional shape forms a disc-shaped sealing gasket structure.

[0007] Further, the wall thickness of the rubber gasket is 1-1.5 mm.

[0008] Further, the rubber gasket is made of silica gel material.

[0009] Further, the cylinder part of the rubber gasket is connected to the gap valve cylinder body, and the cone part of the rubber gasket is matched with the cone gasket at the top of the V-shaped gasket group.

[0010] Advantages: Compared with the prior art, by designing a new sealing structure, the utility model avoids the problems of material leakage and seizure during the movement of the connecting rod and the problem of material leakage during operation, is easy to install without adjustment, and improves the service life of the consumables of the gap valve. Brief Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the overall sealing structure of the gap valve;

[0012] Figure 2 is Figure 1 a schematic structural diagram of the rubber gasket in

[0013] Figure 3 schematic structural diagram of the gap valve in the coater.

[0014] In the figure: 1, gap valve; 2, V-shaped gasket group; 3, rubber gasket; 3-1, cylinder; 3-2, cone; 4, gap valve connecting rod; 5, connecting rod lock sleeve; 6, gap valve coating cylinder body; 7, gap valve return cylinder body. Detailed Description of the Preferred Embodiments

[0015] The following is a detailed description of the specific embodiments provided according to the present invention in conjunction with the preferred embodiments: Referring to the drawings, this embodiment provides a sealing structure for the gap valve of a lithium battery coater, where the coater includes a gap valve coating cylinder body 6 and a gap valve return cylinder body 7, and further includes a gap valve 1 placed in the coating cylinder body. The gap valve includes a V-shaped gasket group 2, a rubber gasket 3, a gap valve connecting rod 4, and a connecting rod lock sleeve 5. The V-shaped gasket group is sleeved on the gap valve connecting rod and tightened with the gap valve connecting rod through the connecting rod lock sleeve. A rubber gasket is provided on the top V-shaped gasket, and the upper part of the rubber gasket is connected to the gap valve cylinder body to form an overall sealing structure of the gap valve.

[0016] The preferred structure of this embodiment is that the rubber gasket includes a cylinder 3-1 and a cone 3-2 to form a sealing gasket structure with a cross-sectional shape of a disc cap type.

[0017] The preferred structure of this embodiment is that the wall thickness of the rubber gasket is 1-1.5 mm. The preferred wall thickness of the rubber gasket in this embodiment is 1 mm.

[0018] The preferred structure of this embodiment is that the rubber gasket is made of silica gel material.

[0019] The preferred structure of this embodiment is that the cylinder part of the rubber gasket is connected to the gap valve cylinder body, and the cone part of the rubber gasket cooperates with the cone gasket at the top of the V-shaped gasket group.

[0020] Working Principle

[0021] The gap valve realizes the on-off of the slurry by the cylinder driving the cover plate through the connecting rod. A sealing structure is required between the connecting rod and the cylinder block. The original sealing structure is that the V-shaped gasket group and the cylinder block are deformed by external force extrusion to achieve the purpose of sealing with the connecting rod. To solve the problems of material leakage and seizure, a silicone rubber gasket is added between the V-shaped gasket group and the cylinder block. The silicone rubber gasket wraps the connecting rod and fits perfectly with the V-shaped gasket group and the cylinder block. The combination of the silicone gasket and the V-shaped gasket group replaces the original skeleton sealing structure to achieve quick and easy installation.

[0022] The above detailed description of the sealing structure of the gap valve of a lithium battery coater with reference to the embodiments is illustrative rather than restrictive. Several embodiments can be listed according to the defined scope. Therefore, changes and modifications without departing from the general concept of the present invention should fall within the protection scope of the present invention.

Claims

1. A gap valve sealing structure for a lithium battery coating machine, characterized in that: It includes a gap valve placed in a coating cylinder body, the gap valve includes a V-shaped gasket group, a rubber pad, a gap valve connecting rod and a connecting rod locking sleeve, the V-shaped gasket group is sleeved on the gap valve connecting rod and is tightened to the gap valve connecting rod through the connecting rod locking sleeve, the V-shaped gasket at the top is provided with a rubber pad, and the upper part of the rubber pad is connected to the gap valve cylinder body to form an overall gap valve sealing structure.

2. The gap valve sealing structure of the lithium battery coating machine according to claim 1 is characterized in that: The rubber pad comprises a cylinder and a cone to form a disc-shaped sealing pad structure with a cross-section shape.

3. The gap valve sealing structure of the lithium battery coating machine according to claim 1 or 2, characterized in that: The wall thickness of the rubber pad is 1-1.5 mm.

4. The gap valve sealing structure of the lithium battery coating machine according to claim 3 is characterized in that: The rubber pad is made of silicone material.

5. The gap valve sealing structure of the lithium battery coating machine according to claim 2, characterized in that: The cylindrical part of the rubber pad is connected to the clearance valve cylinder body, and the conical part of the rubber pad is matched with the conical gasket at the top end of the V-shaped gasket group.

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