A roller mill cylinder for graphite negative electrode production

Abstract

The utility model relates to a ring roller mill cylinder for graphite negative electrode production, including a base, a cylinder, a centrifugal motor, a feed pipe, and a discharge pipe, wherein the cylinder includes an upper cylinder and a lower cylinder, the upper cylinder and the lower cylinder are connected in a fixed manner, the lower cylinder is fixedly arranged on the base, the top surface of the upper cylinder is provided with the centrifugal motor, the discharge pipe is connected to a powder selector, an inspection door is arranged on the side of the cylinder, the inspection door is movably connected to the cylinder through a hinge assembly, and dustproof sealing rings are arranged between the upper cylinder and the lower cylinder, between the lower cylinder and the base, between the inspection door and the cylinder, between the feed pipe and the cylinder, between the discharge pipe and the cylinder, and between the centrifugal motor and the cylinder. The utility model can reduce the impact of fine powder on the health and environment of workers in the preparation process of graphite negative electrode materials, reduce the work intensity of maintenance personnel, improve maintenance efficiency, and save time and labor costs.

Description

Technical Field

[0001] The utility model relates to the technical field of ring roller mills, in particular to a ring roller mill cylinder for graphite negative electrode production. Background Art

[0002] Ring roller mill, also known as roller mill or abacus mill, is commonly used for high-fine grinding of non-metallic minerals such as graphite, calcium carbonate, calcite, dolomite, limestone, silica, talc, kaolin, spar, etc. It mainly achieves the crushing of non-metallic minerals through the rolling, impact and grinding of multiple layers of ring rollers. When the mineral enters the crushing chamber through the feed pipe, it will scatter around the ring roller under the action of centrifugal force and fall into the raceway of the grinding ring. After that, the grinding roller presses and rolls the mineral, grinds it at the same time, and crushes it. After the first layer of crushing, the mineral will fall into the second layer, the third layer, and the fourth layer, until it is finally crushed to the required fineness after multiple layers of rolling and grinding. Next, the crushed minerals will be thrown out of the roller mill, and the induced draft fan will suck the crushed minerals into the powder concentrator through negative pressure. The coarse powder with larger diameter will return to the roller mill for re-grinding after passing through the classifier, while the fine powder with smaller diameter will enter the cyclone collector or bag dust collector with the airflow generated by the negative pressure for gas-solid separation. After that, the minerals are discharged from the discharge valve as the finished product, and the air is purified by the dust collector and discharged through the fan and muffler.

[0003] The advantages of the ring roller mill are its rolling crushing method and multi-layer rolling design, which are very suitable for the crushing of non-metallic minerals with a Mohs hardness of less than 6 and a humidity of less than 7%. It can produce products with a fineness of 150 mesh to 3000 mesh at one time, covering coarse powder to ultrafine powder. Under the same fineness requirements, compared with stirred mills, impact mills, air flow mills, ball mills, etc., the ring roller mill has higher production efficiency, lower energy consumption, and lower production costs. At the same time, due to its simple installation, no need to set up a multi-layer steel structure platform or concrete platform, and fast production speed, the ring roller mill is widely used in the grinding of non-metallic materials. The existing ring roller mill is mainly composed of a feeder, a main machine, a classifier, a pulse collector, a high-pressure fan, an electronic control device, etc. Its cylinder is generally composed of an upper and lower cylinder, which are riveted, bolted, screwed or clamped. The lower cylinder is fixed on the support seat, and a feed pipe is installed on the lower cylinder, and a discharge pipe and a motor are installed on the upper cylinder.

[0004] In the process of preparing graphite negative electrode materials, a ring roller mill is needed to grind graphite. The existing ring roller mill cylinder connects various components by riveting, screwing or clamping, and the sealing is not good enough. Fine powder with smaller diameter is easy to escape from the connection of various components, resulting in unorganized emissions, which has adverse effects on the health of workers and the environment. And if the existing ring roller mill needs to be inspected inside, one method is that the maintenance personnel remove all the fixing devices of the upper and lower cylinders, then move the cylinder away, and then inspect the inside of the ring mill roller. Although this method is convenient for maintenance personnel to operate, it is time-consuming and laborious to disassemble the cylinder, and frequent disassembly is likely to affect the sealing effect of the cylinder; another method is to open an inspection door on the cylinder, but for the convenience of opening and closing, the inspection door opened on the cylinder is generally small. Although the maintenance personnel can check the situation inside the cylinder through the inspection door, if they encounter a situation where parts need to be replaced, it will cause inconvenience for the maintenance personnel to operate.

[0005] Chinese patent CN208526808U discloses a ring roller mill, whose cylinder includes an upper cylinder, a middle cylinder, and a lower cylinder, which are fixedly connected by bolts and nuts, and no maintenance door is provided. When maintenance is required, the bolts and nuts need to be removed one by one, which is time-consuming and labor-intensive, and the connection between the cylinders easily causes the escape of fine powder. Another Chinese patent CN2799074Y discloses a vertical centrifugal roller ultrafine grinding machine, which has a hinged door on the casing for easy maintenance, and a pressing block for fixing the hinged door is provided on the casing, but due to the small size of the hinged door, it is inconvenient for maintenance personnel to operate, especially when replacing parts.

[0006] Therefore, how to improve the sealing performance between the components of the ring roller mill and how to facilitate maintenance personnel to operate the ring roller mill during maintenance have become technical problems to be solved. Utility Model Content

[0007] The utility model aims to provide a roller mill cylinder for graphite negative electrode production to solve the deficiencies in the prior art. The technical problem to be solved by the utility model is achieved through the following technical solutions.

[0008] A ring roller mill cylinder for graphite negative electrode production comprises a base, a cylinder, a centrifugal motor, a feed pipe and a discharge pipe, wherein the cylinder comprises an upper cylinder and a lower cylinder, the upper cylinder and the lower cylinder are connected in a fixed manner, the lower cylinder is fixedly arranged on the base, the top surface of the upper cylinder is provided with the centrifugal motor, the cylinder is connected to the feed pipe and the discharge pipe, the discharge pipe is connected to a powder classifier, an inspection door is provided on the side of the cylinder, the inspection door is movably connected to the cylinder through a hinge assembly, and dustproof sealing rings are provided between the upper cylinder and the lower cylinder, between the lower cylinder and the base, between the inspection door and the cylinder, between the feed pipe and the cylinder, between the discharge pipe and the cylinder, and between the centrifugal motor and the cylinder.

[0009] Preferably, the upper cylinder and the lower cylinder are fixedly connected by riveting, screwing or clamping.

[0010] Preferably, the inspection door is movably connected to the lower cylinder through the hinge assembly, and the area of ​​the inspection door occupies more than two-thirds of the side viewing area of ​​the lower cylinder.

[0011] Preferably, the hinge assembly comprises a hinge shaft and a connecting ear, and the inspection door is connected to the hinge shaft via the connecting ear.

[0012] Preferably, the feed pipe is arranged on the lower cylinder, and the discharge pipe is arranged on the upper cylinder, and when facing the inspection door, the feed pipe and the discharge pipe are respectively located on the left and right sides of the cylinder.

[0013] Preferably, the dustproof sealing ring is a rubber sealing ring.

[0014] Preferably, dust adsorption nets are respectively provided on both sides of the rubber sealing ring.

[0015] Preferably, the dust adsorption net is a HEPA filter, and activated carbon particles are arranged in the filter.

[0016] In the utility model, dustproof sealing rings are arranged between the upper cylinder and the lower cylinder, between the lower cylinder and the base, between the inspection door and the cylinder, between the feed pipe and the cylinder, between the discharge pipe and the cylinder, and between the centrifugal motor and the cylinder, which can effectively seal the joints and prevent the escape of fine powder from causing adverse effects on the health of the staff and the environment. In addition, dust adsorption nets are arranged on both sides of the dustproof sealing ring, which can not only play a sealing role, but also adsorb fine powder in the gas escaping from the joints. In addition, when the maintenance personnel inspect the ring mill roller, they can directly open the inspection door to operate without disassembling the cylinder, which saves manpower and time costs and reduces the difficulty of operation. Since the area of ​​the inspection door accounts for more than two-thirds of the side view area of ​​the lower cylinder, it is more convenient for the maintenance personnel to operate. The inspection door is connected to the lower cylinder by a hinge assembly, and the hinge assembly is composed of a hinge shaft and a connecting ear, so that the inspection door can be easily opened and closed even if it is large and heavy.

[0017] The utility model provides a roller mill cylinder for graphite negative electrode production. Through the above improvements, the impact of fine powder on the health of workers and the environment can be reduced to the greatest extent during the preparation of graphite negative electrode materials, the work intensity of maintenance personnel can be reduced, the maintenance efficiency can be improved, and time and labor costs can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the ring grinding roller of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the dustproof sealing ring;

[0020] The reference numerals in the accompanying drawings are: 1, base, 2, upper cylinder, 3, lower cylinder, 4, centrifugal motor, 5, feed pipe, 6, discharge pipe, 7, inspection door, 8, hinge shaft, 9, connecting ear, 10, dustproof sealing ring, 11, rubber sealing ring, 12, dust adsorption net. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Embodiment 1:

[0023] A roller mill cylinder for graphite negative electrode production includes a base 1, a cylinder, a centrifugal motor 4, a feed pipe 5, and a discharge pipe 6, wherein the cylinder includes an upper cylinder 2 and a lower cylinder 3, the upper cylinder 2 and the lower cylinder 3 are connected in a fixed manner, the lower cylinder 3 is fixedly arranged on the base 1, the top surface of the upper cylinder 2 is provided with the centrifugal motor 4, the cylinder is connected to the feed pipe 5 and the discharge pipe 6, the discharge pipe 6 is connected to a powder selector, an inspection door 7 is provided on the side of the cylinder, the inspection door 7 is movably connected to the cylinder through a hinge assembly, and dustproof sealing rings 10 are provided between the upper cylinder 2 and the lower cylinder 3, between the lower cylinder 3 and the base 1, between the inspection door 7 and the cylinder, between the feed pipe 5 and the cylinder, between the discharge pipe 6 and the cylinder, and between the centrifugal motor 4 and the cylinder. The upper cylinder 2 and the lower cylinder 3 are fixedly connected by riveting, screwing or clamping.

[0024] In the utility model, dustproof sealing rings are arranged between the upper cylinder and the lower cylinder, between the lower cylinder and the base, between the inspection door and the cylinder, between the feed pipe and the cylinder, between the discharge pipe and the cylinder, and between the centrifugal motor and the cylinder, which can effectively seal the joints and prevent fine powder from escaping and causing adverse effects on the health of workers and the environment.

[0025] Embodiment 2:

[0026] On the basis of Example 1, the inspection door 7 is movably connected to the lower cylinder 3 through the hinge assembly, and the area of ​​the inspection door 7 occupies more than two-thirds of the side view area of ​​the lower cylinder 3.

[0027] In this embodiment, the size of the inspection door relative to the lower cylinder is limited. Such a setting can not only greatly reduce the workload of maintenance personnel, but also eliminate the need to open the upper cylinder and the lower cylinder when parts need to be replaced, thereby saving time and labor costs and improving maintenance efficiency.

[0028] Furthermore, the hinge assembly includes a hinge shaft 8 and a connecting ear 9 , and the inspection door 7 is connected to the hinge shaft 8 via the connecting ear 9 .

[0029] In this embodiment, the inspection door is connected to the lower cylinder by a hinge assembly, and the hinge assembly is composed of a hinge shaft and a connecting ear. This arrangement allows the inspection door to be easily opened and closed even if it is large and heavy, reducing the workload of the staff.

[0030] The feed pipe 5 is arranged on the lower cylinder 3, and the discharge pipe 6 is arranged on the upper cylinder 2. When facing the inspection door 7, the feed pipe 5 and the discharge pipe 6 are respectively located on the left and right sides of the cylinder.

[0031] In this embodiment, the feed pipe and the discharge pipe are arranged on both sides of the ring roller mill, which can prevent the feed and the discharge from affecting each other.

[0032] Embodiment 3:

[0033] On the basis of Embodiment 1, the dustproof sealing ring 10 is configured as a rubber sealing ring 11 , and dust adsorption nets 12 are respectively disposed on both sides of the rubber sealing ring 11 .

[0034] In this embodiment, dust adsorption nets are arranged on both sides of the rubber sealing ring, which can not only play a sealing role, but also adsorb fine powder in the gas escaping from the joints.

[0035] Furthermore, the dust adsorption net 12 is configured as a HEPA filter, and activated carbon particles are also arranged in the filter.

[0036] Setting HEPA filters on both sides of the sealing ring and placing activated carbon particles in them can effectively adsorb fine powder, further improve the sealing performance of the roller mill, and reduce the impact on the health of workers and the environment caused by the escape of fine powder.

[0037] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0040] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0041] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0042] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0043] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A roller mill cylinder for graphite negative electrode production, comprising a base (1), a cylinder, a centrifugal motor (4), a feed pipe (5), and a discharge pipe (6), wherein the cylinder comprises an upper cylinder (2) and a lower cylinder (3), wherein the upper cylinder (2) and the lower cylinder (3) are connected in a fixed manner, wherein the lower cylinder (3) is fixedly arranged on the base (1), wherein the centrifugal motor (4) is arranged on the top surface of the upper cylinder (2), wherein the cylinder is connected to the feed pipe (5) and the discharge pipe (6), wherein the discharge pipe (6) is connected to the centrifugal motor (4) and ... centrifugal motor (4) is connected to the centrifugal motor (4) and the discharge pipe (6) is connected to the centrifugal motor (4) and the discharge pipe (6) is connected to the centrifugal motor (4) and the centrifugal motor (4) is connected to the centrifugal motor (4) and the discharge pipe (6) is connected to the centrifugal motor (4) and the The material pipe (6) is connected to the powder selecting machine. An inspection door (7) is provided on the side of the cylinder. The inspection door (7) is movably connected to the cylinder through a hinge assembly. Dustproof sealing rings (10) are provided between the upper cylinder (2) and the lower cylinder (3), between the lower cylinder (3) and the base (1), between the inspection door (7) and the cylinder, between the feed pipe (5) and the cylinder, between the discharge pipe (6) and the cylinder, and between the centrifugal motor (4) and the cylinder.

2. The roller mill cylinder for graphite negative electrode production according to claim 1, characterized in that: The upper cylinder (2) and the lower cylinder (3) are fixedly connected by riveting, screwing or clamping.

3. The roller mill cylinder for graphite negative electrode production according to claim 1, characterized in that: The inspection door (7) is movably connected to the lower cylinder (3) via the hinge assembly, and the area of ​​the inspection door (7) accounts for more than two thirds of the side view area of ​​the lower cylinder (3).

4. The roller mill cylinder for producing graphite negative electrode according to claim 3, characterized in that: The hinge assembly comprises a hinge shaft (8) and a connecting ear (9), and the inspection door (7) is connected to the hinge shaft (8) via the connecting ear (9).

5. The roller mill cylinder for graphite negative electrode production according to claim 1, characterized in that: The feed pipe (5) is arranged on the lower cylinder (3), and the discharge pipe (6) is arranged on the upper cylinder (2). When facing the inspection door (7), the feed pipe (5) and the discharge pipe (6) are respectively located on the left and right sides of the cylinder.

6. The roller mill cylinder for graphite negative electrode production according to claim 1, characterized in that: The dustproof sealing ring (10) is a rubber sealing ring (11).

7. The roller mill cylinder for producing graphite negative electrode according to claim 6, characterized in that: Dust adsorption nets (12) are respectively arranged on both sides of the rubber sealing ring (11).

8. The roller mill cylinder for producing graphite negative electrode according to claim 7, characterized in that: The dust adsorption net (12) is a HEPA filter net, and activated carbon particles are arranged in the filter net.

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