Raw material supply device for graphite reaction based on negative pressure closed space

Abstract

The utility model discloses a raw material supply device for graphite reaction based on a negative-pressure closed space, which relates to the field of graphite raw material supply and comprises a stock bin for placing raw materials for graphite reaction, and a venturi tube communicated with the stock bin is mounted at the discharge end of the stock bin. A gas inlet pipe and a screening pipe are installed at the other two ends of the Venturi pipe in a communicating mode respectively, a feeding pipe is installed below the screening pipe in a communicating mode, a filtering mechanism is arranged in the screening pipe, and the filtering mechanism comprises a sealing plate installed at the end of the screening pipe through a flange in a sealing mode; the end, facing the screening pipe, of the sealing plate is fixedly connected with a filter cylinder located above the feeding pipe. According to the utility model, the compressed nitrogen generates negative pressure through the venturi tube, the graphite raw material is sucked into the mixing cavity from the stock bin to be mixed with the nitrogen, the graphite raw material is effectively sucked and dispersed, caking is prevented, the subsequent filtering and conveying uniformity is ensured, filtering is realized through the filter cartridge, the production efficiency is improved, and the long-term stable conveying efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of graphite raw material supply, and in particular to a raw material supply device for graphite reaction based on a negative pressure sealed space. Background Technology

[0002] Raw materials for graphite reactions mainly fall into two categories: natural graphite and artificial graphite. In graphite reactions, the application of artificial graphite is becoming increasingly widespread. It can be used not only as a raw material to produce various graphite products (such as electrodes, crucibles, heat exchangers, etc.), but also as an important raw material for lithium-ion battery anode materials. With the rapid development of the new energy industry, the demand for artificial graphite is also constantly increasing.

[0003] Traditional equipment often lacks efficient raw material intake and dispersion mechanisms. Graphite raw materials are prone to agglomeration during transportation and do not have a filtration function. Agglomerated graphite raw materials may clog the reactor or transportation pipeline, leading to uneven filtration and transportation, resulting in equipment failure or reduced production efficiency, and thus affecting the efficiency and quality of graphite reaction. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a raw material supply device for graphite reaction based on a negative pressure sealed space.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A graphite reaction raw material supply device based on a negative pressure closed space includes a silo containing graphite reaction raw materials. A venturi tube connected to the discharge end of the silo is installed therewith. An air inlet pipe and a sieve pipe are respectively connected to the other two ends of the venturi tube. A feeding pipe is connected to the bottom of the sieve pipe. A filtration mechanism is provided inside the sieve pipe, and a feeding mechanism is provided inside the feeding pipe.

[0007] The filtration mechanism includes a sealing plate installed at the end of the screening pipe via a flange seal, and a filter cylinder located above the feed pipe is fixedly connected to one end of the sealing plate facing the screening pipe.

[0008] Preferably, the venturi tube includes an integrally formed primary tapered tube and a secondary tapered tube. The end of the primary tapered tube is connected to the air inlet pipe and compressed nitrogen is introduced through it. The end of the secondary tapered tube is sealed and connected through a flange and a screening pipe. A mixing chamber is formed between the primary tapered tube and the secondary tapered tube. A feed pipe is installed on the mixing chamber, and the end of the feed pipe is connected to the hopper.

[0009] Preferably, a rotating shaft is rotatably provided on the sealing plate via a sealed bearing, and a brush roller is rotatably provided on the portion of the rotating shaft located inside the filter cylinder. The brush roller is pressed against the inner wall of the filter cylinder. A first motor is fixedly connected to the sealing plate, and the output shaft of the first motor extends into the interior of the sealing plate and is fixedly connected to a main gear. A secondary gear that meshes with the main gear is fixedly sleeved on the outer wall of the rotating shaft.

[0010] Preferably, the rotating shaft is a hollow thermally conductive material component, a base is installed on the sealing plate, a heating rod is installed inside the base, and one end of the heating rod extends into the rotating shaft.

[0011] Preferably, a guide ring is fixedly connected to the outer wall of the filter cartridge to abut against the inner wall of the screening tube, and the cross-section of the guide ring is trumpet-shaped.

[0012] Preferably, the guide ring and the sealing plate are located on both sides of the feed pipe, and an O-ring is embedded on the outer ring of both the guide ring and the sealing plate.

[0013] Preferably, a second motor is fixedly connected to one end of the feeding pipe, the output shaft of the second motor extends into the feeding pipe and is fixedly connected to a feeding shaft, a feeding auger is fixedly connected to the feeding shaft, and an outlet is provided on the feeding pipe at the end of the feeding shaft.

[0014] Preferably, a scraper is fixedly connected to the feeding auger, and one side of the scraper contacts the inner wall of the feeding pipe.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this application, the negative pressure effect of the venturi tube is effectively utilized to efficiently mix graphite raw materials with compressed nitrogen and accelerate their transport, which significantly improves the dispersion and transport efficiency of the raw materials, effectively prevents the agglomeration of graphite raw materials, and ensures the uniformity of subsequent filtration and transport.

[0017] 2. In this application, the filter cartridge can accurately filter out impurities in the raw materials, while the brush roller cleans the inner wall of the filter cartridge in real time, avoiding filter cartridge blockage and eliminating the need to stop the machine for cleaning. This greatly improves production efficiency and avoids equipment failure or decreased production efficiency, which in turn affects the efficiency and quality of the graphite reaction.

[0018] 3. In this application, the combined use of the feeding auger and scraper not only achieves efficient material conveying, but also promptly removes scale buildup on the inner wall of the feeding pipe, reducing equipment maintenance requirements and extending equipment lifespan. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a graphite reaction raw material supply device based on a negative pressure sealed space proposed in this utility model.

[0020] Figure 2 This is a schematic cross-sectional view of a venturi tube for a graphite reaction raw material supply device based on a negative pressure sealed space, as proposed in this utility model.

[0021] Figure 3 This is a partial structural diagram of the filtration mechanism of a graphite reaction raw material supply device based on a negative pressure sealed space proposed in this utility model.

[0022] Figure 4 This is a cross-sectional view of the feed pipe of a graphite reaction raw material supply device based on a negative pressure sealed space proposed in this utility model.

[0023] Figure 5 This is a schematic diagram of the feeding mechanism of a graphite reaction raw material supply device based on a negative pressure sealed space proposed in this utility model.

[0024] Legend: 100, hopper; 200, venturi tube; 201, primary tapering tube; 202, secondary tapering tube; 203, mixing chamber; 204, feed pipe; 300, air inlet pipe; 400, screening pipe; 500, feeding pipe; 501, discharge port; 600, filtration mechanism; 601, sealing plate; 602, filter cartridge; 603, rotating shaft; 604, brush roller; 605, first motor; 606, main gear; 607, auxiliary gear; 608, base; 609, heating rod; 610, guide ring; 611, O-ring seal; 700, feeding mechanism; 701, second motor; 702, feeding shaft; 703, feeding auger; 704, scraper. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] like Figure 1-5As shown, this utility model provides a graphite reaction raw material supply device based on a negative pressure sealed space, including a silo 100 containing graphite reaction raw materials, a venturi tube 200 connected to the discharge end of the silo 100, an air inlet pipe 300 and a sieve pipe 400 respectively connected to the other two ends of the venturi tube 200, a feed pipe 500 connected to the bottom of the sieve pipe 400, a filter mechanism 600 provided in the sieve pipe 400, and a feeding mechanism 700 provided in the feed pipe 500.

[0028] The filtration mechanism 600 includes a sealing plate 601 installed at the end of the screening pipe 400 via a flange seal, and a filter cartridge 602 located above the feed pipe 500 is fixedly connected to one end of the sealing plate 601 facing the screening pipe 400.

[0029] In this embodiment, the Venturi tube 200 includes an integrally formed primary tapered tube 201 and a secondary tapered tube 202. The end of the primary tapered tube 201 is connected to the air inlet pipe 300 and compressed nitrogen is introduced through it. The end of the secondary tapered tube 202 is sealed and connected to the sieve pipe 400 through a flange. A mixing chamber 203 is formed between the primary tapered tube 201 and the secondary tapered tube 202. A feed pipe 204 is connected to the mixing chamber 203. The end of the feed pipe 204 is connected to the hopper 100.

[0030] Specifically, compressed nitrogen enters the first-stage converging pipe 201 from the inlet pipe 300, where the flow rate gradually increases and the pressure decreases, forming a negative pressure zone in the mixing chamber 203. The negative pressure zone draws graphite raw material from the hopper 100 into the mixing chamber 203 through the feed pipe 204. The high-speed airflow disperses the graphite raw material into fine particles to prevent agglomeration and ensure the uniformity of subsequent filtration and conveying. The graphite raw material and airflow are mixed and then accelerated through the second-stage converging pipe 202 before entering the screening pipe 400, improving the conveying efficiency.

[0031] In this embodiment, a rotating shaft 603 is rotatably mounted on the sealing plate 601 via a sealed bearing. A brush roller 604 is rotatably mounted on the portion of the rotating shaft 603 located inside the filter cartridge 602. The brush roller 604 is pressed against the inner wall of the filter cartridge 602. A first motor 605 is fixedly connected to the sealing plate 601. The output shaft of the first motor 605 extends into the interior of the sealing plate 601 and is fixedly connected to a main gear 606. A secondary gear 607, meshing with the main gear 606, is fixedly sleeved on the outer wall of the rotating shaft 603.

[0032] Specifically, after the graphite raw material is fed into the screening pipe 400, it enters the filter cylinder 602. After being filtered by the filter cylinder 602, it enters the feed pipe 500. During the filtration process, the first motor 605 drives the main gear 606, which drives the secondary gear 607 to rotate the rotating shaft 603. This causes the brush roller 604 to stick to the inner wall of the filter cylinder 602 and scrape off the adhering impurities. The brush roller 604 cleans the filter cylinder 602 in real time to prevent clogging. There is no need to stop the machine during the cleaning process, which improves production efficiency.

[0033] In this embodiment, the rotating shaft 603 is a hollow thermally conductive material component, a base 608 is installed on the sealing plate 601, a heating rod 609 is installed inside the base 608, and one end of the heating rod 609 extends into the rotating shaft 603.

[0034] Specifically, after the heating rod 609 is powered on, it transfers heat to the rotating shaft 603, which in turn transfers the heat to the graphite raw material being filtered inside the filter cartridge 602. This effectively reduces the moisture content of the graphite raw material, prevents clumping, ensures continuous feeding, and improves conveying efficiency.

[0035] In this embodiment, a guide ring 610 that abuts against the inner wall of the screening tube 400 is fixedly connected to the outer wall of the filter cartridge 602. The cross section of the guide ring 610 is trumpet-shaped. The guide ring 610 and the sealing plate 601 are located on both sides of the feed tube 500. O-rings 611 are embedded on the outer rings of the guide ring 610 and the sealing plate 601.

[0036] Specifically, the horn-shaped guide ring 610 guides the graphite raw material and airflow after they are mixed, and together with the O-ring seal 611, it seals the mixture to ensure that the graphite raw material enters the filter cartridge 602 and is filtered.

[0037] In this embodiment, a second motor 701 is fixedly connected to one end of the feeding pipe 500. The output shaft of the second motor 701 extends into the feeding pipe 500 and is fixedly connected to a feeding shaft 702. A feeding auger 703 is fixedly connected to the feeding shaft 702. An outlet 501 located at the end of the feeding shaft 702 is provided on the feeding pipe 500. A scraper 704 is fixedly connected to the feeding auger 703. One side of the scraper 704 contacts the inner wall of the feeding pipe 500.

[0038] Specifically, the second motor 701 drives the feeding shaft 702 and the feeding auger 703 to rotate. The feeding auger 703 conveys the filtered raw material to the discharge port 501. The scraper 704 follows the rotation to scrape off the graphite raw material adhering to the inner wall of the feeding pipe 500, preventing scale buildup, reducing maintenance frequency, and ensuring conveying efficiency.

[0039] How to use and how to work this device:

[0040] When in use, the device generates negative pressure by passing compressed nitrogen through the venturi tube 200, drawing graphite raw materials from the hopper 100 into the mixing chamber 203 to mix with the nitrogen. This effectively draws in and disperses the graphite raw materials, preventing agglomeration and ensuring uniformity in subsequent filtration and conveying. The mixed airflow is accelerated within the venturi tube 200 and enters the filter cartridge 602 within the screening tube 400. The mixed airflow is filtered through the filter cartridge 602, preventing equipment failure or decreased production efficiency, which could affect the efficiency and quality of the graphite reaction. During the filtration process, the brush roller 604 cleans the inner wall of the filter cartridge 602 in real time to prevent clogging. The cleaning process does not require machine shutdown, improving production efficiency. The filtered raw materials are conveyed to the discharge port 501 by the feeding auger 703, and the scraper 704 removes the scale buildup on the inner wall, reducing maintenance requirements and ensuring long-term stable conveying efficiency.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A raw material supply device for a graphite reaction based on a negative pressure closed space, characterized by: The application relates to a graphite reaction raw material feeding device, which comprises a raw material bin (100) provided with a Venturi tube (200) at the discharge end of the bin (100), an air inlet pipe (300) and a screening pipe (400) are respectively connected to the other two ends of the Venturi tube (200), a feeding pipe (500) is connected to the lower end of the screening pipe (400), a filtering mechanism (600) is arranged in the screening pipe (400), and a feeding mechanism (700) is arranged in the feeding pipe (500). The filtering mechanism (600) comprises a sealing plate (601) which is sealingly connected to the end of the screening pipe (400) through a flange, and a filter cylinder (602) is fixedly connected to one end of the sealing plate (601) and located above the feeding pipe (500).

2. The raw material supply device for a graphite reaction based on a negative pressure closed space according to claim 1, characterized by: The Venturi tube (200) comprises a first-stage taper pipe (201) and a second-stage taper pipe (202) which are integrally formed, the end of the first-stage taper pipe (201) is connected to the air inlet pipe (300) and is connected to compressed nitrogen, the end of the second-stage taper pipe (202) is sealingly connected to the screening pipe (400) through a flange, a mixing cavity (203) is formed between the first-stage taper pipe (201) and the second-stage taper pipe (202), a feeding pipe (204) is connected to the mixing cavity (203), and the end of the feeding pipe (204) is connected to the bin (100).

3. The raw material supply device for a graphite reaction based on a negative pressure closed space according to claim 1, characterized in that: A rotating shaft (603) is rotatably arranged on the sealing plate (601) through a sealing bearing, a brush roller (604) is rotatably arranged on the part of the rotating shaft (603) located in the filter cylinder (602), the brush roller (604) is tightly attached to the inner wall of the filter cylinder (602), a first motor (605) is fixedly connected to the sealing plate (601), the output shaft of the first motor (605) extends into the sealing plate (601) and is fixedly connected to a main gear (606), and a secondary gear (607) which is engaged with the main gear (606) is fixedly sleeved on the outer wall of the rotating shaft (603).

4. The raw material supply device for a graphite reaction based on a negative pressure closed space according to claim 3, characterized in that: The rotating shaft (603) is a hollow heat-conducting material component, a base (608) is arranged on the sealing plate (601), a heating rod (609) is arranged in the base (608), and one end of the heating rod (609) extends into the rotating shaft (603).

5. The feedstock supply apparatus for a graphite reaction based on a negative pressure closed space according to claim 4, characterized in that: A guide ring (610) which is in contact with the inner wall of the screening pipe (400) is fixedly connected to the outer wall of the filter cylinder (602), and the cross section of the guide ring (610) is in the shape of a horn.

6. The feedstock supply apparatus for a graphite reaction based on a negative pressure closed space according to claim 5, characterized by: The guide ring (610) and the sealing plate (601) are respectively located on the two sides of the feeding pipe (500), and O-shaped sealing rings (611) are embedded on the outer rings of the guide ring (610) and the sealing plate (601).

7. The raw material supply device for a graphite reaction based on a negative pressure closed space according to claim 1, characterized by: One end of the feeding pipe (500) is fixedly connected to a second motor (701), the output shaft of the second motor (701) extends into the feeding pipe (500) and is fixedly connected to a feeding shaft (702), a feeding auger (703) is fixedly connected to the feeding shaft (702), and a discharge port (501) is arranged on the feeding pipe (500) and located at the end of the feeding shaft (702).

8. The feedstock supply apparatus for a graphite reaction based on a negative pressure closed space according to claim 7, characterized by: The feeding auger (703) is fixedly connected with a scraper (704), one side of the scraper (704) contacting the inner wall of the feeding pipe (500).

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