A top exhaust return pipe structure for lithium battery negative electrode materials

Abstract

The invention discloses a top exhaust reflux pipeline structure for lithium battery negative electrode materials, belongs to the technical field of lithium batteries, and solves the problem of tar condensation reflux when the gas in the sealed chamber of the airtight roller kiln replacement chamber in the existing device is discharged; its technical characteristics are: it includes a tar collector, an ejector pipe and an exhaust air duct, the ejector pipe and the exhaust air duct are connected by a connecting component, the tar collector is connected to the exhaust port of the replacement chamber through a pipeline, the tar collector and the ejector pipe are also fixedly connected by a pipeline, the connecting component includes a pipeline and a stainless steel corrugated pipe blank, the pipeline and the stainless steel corrugated pipe blank are connected by threads, the invention can realize the collection of tar condensation in the exhaust gas, avoid the accumulation of tar in the pipeline, and solves the problem of tar condensation reflux when the gas in the sealed chamber of the airtight roller kiln replacement chamber in the existing device is discharged.

Description

Technical Field

[0001] The invention relates to the technical field of lithium batteries, and in particular to a top exhaust reflux pipeline structure for negative electrode materials of lithium batteries. Background Art

[0002] In the production process of negative electrode materials for lithium batteries, it is necessary to discharge, collect and treat the waste gas generated in the production process. Currently, common exhaust mechanisms include air ducts, ejector pipes and exhaust pipes for waste gas in the sealed bin of the replacement chamber. Metal bellows are used to connect the air duct and the ejector pipe, as well as the ejector pipe and the exhaust pipe for waste gas in the sealed bin of the replacement chamber. The interfaces at both ends of the metal bellows are fixed with pipe clamps.

[0003] With the advancement of technology, in order to prevent the high-temperature gas containing tar from liquefying on the inner side of the pipe wall with a lower temperature, and the liquefied tar from seeping out from the connection between the metal bellows and other hard pipes, people use full hard pipes instead of soft pipes. However, in the existing device, tar condensation and reflux are prone to occur when the gas in the sealed chamber of the airtight roller kiln replacement chamber is discharged. Therefore, we propose a top exhaust reflux pipeline structure for lithium battery negative electrode materials. Summary of the invention

[0004] The object of the present invention is to provide a top exhaust reflux pipeline structure for negative electrode materials of lithium batteries, comprising a tar collector, an ejector pipe and an exhaust duct, the ejector pipe and the exhaust duct are connected by a connecting assembly, the tar collector is connected to the exhaust port of the displacement chamber through a pipeline, the tar collector and the ejector pipe are also fixedly connected by a pipeline, the connecting assembly comprises a pipeline and a stainless steel corrugated tube blank, the pipeline and the stainless steel corrugated tube blank are connected by threads, so as to solve the problem of tar condensation reflux when the gas in the sealed chamber of the displacement chamber of the airtight roller kiln in the existing device is discharged.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A top exhaust reflux pipeline structure for negative electrode materials of lithium batteries comprises a tar collector, an ejector pipe and an exhaust duct, wherein the ejector pipe and the exhaust duct are connected via a connecting assembly, the tar collector is connected to an exhaust port of a displacement chamber via a pipeline, the tar collector and the ejector pipe are also fixedly connected via a pipeline, the connecting assembly comprises a pipeline and a stainless steel corrugated tube blank, and the pipeline and the stainless steel corrugated tube blank are connected via threads.

[0007] As a further solution of the present invention: the outer shape of the tar collector is a conical structure, and a ball valve for controlling the exhaust gas flow is provided at one end of the tar collector.

[0008] As a further solution of the present invention: flange sealing is adopted at the connection position of the pipeline.

[0009] As a further solution of the present invention: the connection position of the pipeline is sealed by a quick-release joint.

[0010] As a further solution of the present invention: the connection position of the pipeline adopts a flexible joint seal.

[0011] As a further solution of the present invention: a tar discharge port is also installed on the tar collector.

[0012] In summary, the beneficial effects of the present invention are as follows: the setting of the connecting component avoids the phenomenon of tar reflux when the exhaust gas condenses, ensuring the smooth exhaust, and the setting of the ball valve facilitates the centralized collection and treatment of tar; the present invention can realize the condensation and collection of tar in the exhaust gas, avoiding the accumulation of tar in the pipeline, and at the same time solves the problem of tar condensation reflux when the gas in the sealed chamber of the airtight roller kiln replacement chamber in the existing device is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the invention.

[0014] In the figure: 1-tar collector, 2-injection pipe, 3-exhaust duct, 4-pipeline. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Example 1

[0017] like Figure 1 As shown, in an embodiment of the present invention, a top exhaust reflux pipeline structure for negative electrode materials of a lithium battery includes a tar collector 1, an ejector pipe 2 and an exhaust air duct 3, the ejector pipe 2 and the exhaust air duct 3 are connected by a connecting assembly, the tar collector 1 is connected to the exhaust port of the displacement chamber through a pipe 4, and the tar collector 1 and the ejector pipe 2 are also fixedly connected by the pipe 4.

[0018] Example 2

[0019] like Figure 1 As shown, in an embodiment of the present invention, a top exhaust reflux pipeline structure for negative electrode materials of a lithium battery includes a tar collector 1, an ejector pipe 2 and an exhaust air duct 3, the ejector pipe 2 and the exhaust air duct 3 are connected by a connecting assembly, the tar collector 1 is connected to the exhaust port of the displacement chamber through a pipeline 4, and the tar collector 1 and the ejector pipe 2 are also fixedly connected through the pipeline 4;

[0020] The connection assembly includes a pipe 4 and a stainless steel corrugated pipe blank, and the pipe 4 and the stainless steel corrugated pipe blank are connected by threads. The setting of the connection assembly avoids the phenomenon of tar reflux when the exhaust gas is condensed, and ensures smooth exhaust.

[0021] Example 3

[0022] like Figure 1 As shown, in an embodiment of the present invention, a top exhaust reflux pipeline structure for negative electrode materials of a lithium battery includes a tar collector 1, an ejector pipe 2 and an exhaust air duct 3, the ejector pipe 2 and the exhaust air duct 3 are connected by a connecting assembly, the tar collector 1 is connected to the exhaust port of the displacement chamber through a pipeline 4, and the tar collector 1 and the ejector pipe 2 are also fixedly connected through the pipeline 4;

[0023] The connection position of the pipeline 4 is sealed by a flange, a quick-release joint or a flexible joint to ensure that tar does not leak out.

[0024] Example 4

[0025] like Figure 1 As shown, in an embodiment of the present invention, a top exhaust reflux pipeline structure for negative electrode materials of a lithium battery includes a tar collector 1, an ejector pipe 2 and an exhaust air duct 3, the ejector pipe 2 and the exhaust air duct 3 are connected by a connecting assembly, the tar collector 1 is connected to the exhaust port of the displacement chamber through a pipeline 4, and the tar collector 1 and the ejector pipe 2 are also fixedly connected through the pipeline 4;

[0026] The connection assembly includes a pipe 4 and a stainless steel corrugated pipe blank, and the pipe 4 and the stainless steel corrugated pipe blank are connected by threads. The setting of the connection assembly avoids the phenomenon of tar reflux when the exhaust gas is condensed, and ensures the smooth exhaust;

[0027] The tar collector 1 has a conical structure, and a ball valve for controlling the exhaust gas flow is provided at one end of the tar collector 1. The setting of the ball valve facilitates the centralized collection and treatment of tar.

[0028] The connection position of the pipeline 4 is sealed by a flange, a quick-release joint or a flexible joint to ensure that tar does not leak out.

[0029] The tar collector 1 is also provided with a tar discharge port.

[0030] In summary, the working principle of the present invention is as follows: the waste gas is discharged from the exhaust port of the replacement chamber, the high-temperature gas is condensed in the pipe 4 with a lower temperature to form liquefied tar, and the liquefied tar falls into the tar collector 1 under the influence of gravity. When the liquefied tar needs to be discharged, the tar discharge port and the ball valve are opened to discharge the liquefied tar, and the condensed exhaust gas is discharged through the exhaust duct 3, thereby realizing the recycling of the waste gas;

[0031] The present invention can realize the condensation and collection of tar in the exhaust gas, avoid the accumulation of tar in the pipeline 4, and solve the problem of tar condensation reflux when the gas in the sealed chamber of the airtight roller kiln replacement chamber in the existing device is discharged.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A top exhaust reflux pipeline structure for lithium battery negative electrode materials, comprising a tar collector (1), an ejector pipe (2) and an exhaust duct (3), characterized in that: The ejector pipe (2) and the exhaust air duct (3) are connected via a connecting assembly, the tar collector (1) is connected to the exhaust port of the displacement chamber via a pipeline (4), and the tar collector (1) and the ejector pipe (2) are also fixedly connected via the pipeline (4); The connection assembly comprises a pipe (4) and a stainless steel corrugated pipe blank, wherein the pipe (4) and the stainless steel corrugated pipe blank are connected via threads; The tar collector (1) has a conical structure, and a ball valve for controlling the exhaust gas flow is provided at one end of the tar collector (1); The connection position of the pipeline (4) is sealed by a flange, or by a quick-fit joint, or by a flexible joint.

2. The top exhaust reflux pipeline structure for lithium battery negative electrode material according to claim 1, characterized in that: The tar collector (1) is also provided with a tar discharge port.

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