Centrifugal machine for nitrocellulose

Abstract

The centrifugal machine for nitrocellulose comprises a bottom plate, supporting assemblies are symmetrically arranged on the upper portion of the bottom plate, the two supporting assemblies comprise positioning plates, round penetrating holes are correspondingly formed in the two positioning plates, fixing cylinders are arranged on the inner side walls of the two round penetrating holes, and square grooves are formed in the upper portions of the fixing cylinders. A mounting box is arranged at the position, corresponding to the square groove, of the upper portion of the fixing cylinder, a rotating rod is rotationally connected into the mounting box through a bearing, a plurality of fixing plates are arranged on the outer side wall of the rotating rod, a brush is arranged on the outer side wall of each fixing plate, and the arranged fixing cylinder can be matched with the mounting box so that the rotating rod can be supported; the rotating rod can rotate on the rotating rod, so that the multiple groups of brushes can be mounted on the rotating rod through the fixing plate, the outer side wall of the centrifugal barrel can be brushed through the multiple groups of brushes when the centrifugal barrel rotates at a high speed, and the filtering holes of the centrifugal barrel are prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical raw material production, in particular to a centrifuge for nitrocellulose. Background Technique

[0002] Nitrocellulose, also known as cellulose nitrate or guncotton, is a flammable polymer obtained by esterifying cellulose with nitric acid. This substance appears as white or slightly yellowish cotton-like fluffs, is insoluble in water, but can dissolve in organic solvents such as esters and acetone.

[0003] During the production process of nitrocellulose, impurities or unreacted raw materials may be generated, so it is necessary to separate and purify it to improve the purity of the product. In the prior art, generally, a centrifuge is used to separate the unwanted components from the nitrocellulose solution through centrifugal separation technology.

[0004] However, when using a centrifuge for separation, the impurities in the nitrocellulose will be thrown out, which may cause the filter holes on the inner wall of the centrifuge cylinder to be blocked, and further reduce the separation rate. Summary of the Utility Model

[0005] In view of this, the utility model provides a centrifuge for nitrocellulose, which can support the rotating rod through the arranged fixed cylinder and the mounting box, and can make the rotating rod rotate on it. Furthermore, a plurality of groups of brushes can be installed on the rotating rod through the fixing plate. Therefore, when the centrifuge cylinder rotates at a high speed, the outer wall of the centrifuge cylinder can be brushed by a plurality of groups of brushes, thus avoiding the blockage of the filter holes of the centrifuge cylinder, and the impurities adhered to the brushes can be thrown out because the plurality of groups of brushes can rotate.

[0006] To solve the above technical problems, the utility model provides a centrifuge for nitrocellulose, which includes a bottom plate. Support components are symmetrically arranged on the upper part of the bottom plate. The support components are used to support the fixed cylinder and various components inside it. The two support components include positioning plates, and circular through holes are correspondingly opened on both positioning plates. The circular through holes can be opened by a cutting machine.

[0007] The inner side walls of the two circular perforations are provided with fixed cylinders. The outer side walls at both ends of the fixed cylinder are fixedly connected inside the circular perforations. A square groove is opened in the upper part of the fixed cylinder. The square groove and the circular cylinder can be integrally formed by die casting during production. An installation box is arranged at the position corresponding to the square groove in the upper part of the fixed cylinder. The installation box is fixedly connected to the upper part of the fixed cylinder. A rotating rod is rotatably connected in the installation box through a bearing. The rotating rod is rotatably connected to the installation box through bearings sleeved at both ends. A plurality of fixing plates are arranged on the outer side wall of the rotating rod. The plurality of fixing plates are welded to the outer side wall of the rotating rod. A brush is arranged on the outer side wall of each fixing plate. The brush is fixedly connected to the outer side wall of the fixing plate by means of sol connection.

[0008] A centrifugal component is arranged inside the fixed cylinder. The centrifugal component is used for centrifugally treating nitrocellulose during processing.

[0009] Each group of support components further includes an installation plate arranged below the positioning plate. The installation plate is welded to the lower part of the positioning plate. The installation plate is connected to the upper part of the bottom plate by bolts.

[0010] The centrifugal component includes a support plate arranged on one side of the upper part of the bottom plate. The support plate is connected to the upper part of the bottom plate on one side by bolts. A motor is arranged on the vertical surface of the support plate facing the positioning cylinder. The motor is connected to one side vertical surface of the support plate by bolts. The output shaft of the motor is connected to the transmission rod through a coupling. The other end of the transmission rod is connected to a centrifugal cylinder. The centrifugal cylinder is fixedly connected to the other end of the transmission rod. The centrifugal cylinder is arranged inside the fixed cylinder. The centrifugal cylinder is rotatably connected inside the fixed cylinder through bearings arranged on the outer side walls at both ends.

[0011] A limiting block is arranged on the side of the fixed cylinder away from the motor. The limiting block is welded to one side of the fixed cylinder. A hinged door is connected to one side of the limiting block through a hinge. A handle is arranged on one side surface of the hinged door. The handle is connected to one side surface of the hinged door by bolts.

[0012] A plurality of water drainage holes are opened on the side of the fixed cylinder away from the installation box. The water drainage holes and the fixed cylinder can be integrally formed by die casting during production. A water guide frame is arranged on the outer side wall of the fixed cylinder corresponding to the plurality of water drainage holes. The water guide frame is welded to the outer side wall of the fixed cylinder. A water guide hopper is arranged below the water guide frame. The water guide hopper is welded to the lower part of the water guide frame.

[0013] Support legs are arranged at the four corners of the lower part of the bottom plate. The support legs are welded to the lower part of the bottom plate.

[0014] The beneficial effects of the above technical solutions of the present utility model are as follows:

[0015] 1. The fixed cylinder is provided to cooperate with the installation box to support the rotating rod, and enable the rotating rod to rotate thereon. Furthermore, multiple groups of brushes can be installed on the rotating rod through the fixing plate. Therefore, when the centrifugal cylinder rotates at a high speed, the outer wall of the centrifugal cylinder can be scrubbed by multiple groups of brushes, thus preventing the filter holes of the centrifugal cylinder from being blocked. And since the multiple groups of brushes can rotate, the impurities adhered to the brushes can be thrown out.

[0016] 2. The support assembly is provided to support the fixed cylinder and its various components, and enable the installation plate to drive the positioning plate and its various components for easy disassembly and assembly.

[0017] 3. The water guide frame is provided to cooperate with the water guide hopper to cooperate with the multiple drainage holes opened at the lower part of the fixed cylinder, and thus can guide the waste solution and impurities. Therefore, the waste solution and impurities of the exhaust gas can be collected, which can not only avoid polluting the working environment, but also avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the installation box of the present utility model and the structures of its various components;

[0020] Figure 3 is a schematic front sectional view structure of the present utility model;

[0021] Figure 4 is a schematic diagram of the overall structure of the other side of the present utility model.

[0022] In the figure: 101, bottom plate; 102, fixed cylinder; 103, installation box; 104, rotating rod; 105, brush;

[0023] 201, installation plate; 202, positioning plate;

[0024] 301, support plate; 302, motor; 303, transmission rod; 304, centrifugal cylinder;

[0025] 401, limit block; 402, opening and closing door; 403, handle;

[0026] 501, water guide frame; 502, water guide hopper;

[0027] 601, support leg. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will combine the drawings of the embodiments of the present utility model Figures 1-4, the technical solutions of the embodiments of the present utility model are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model fall within the scope of protection of the present utility model.

[0029] As Figure 1 , 3 shown: A centrifuge for nitrocellulose includes a bottom plate 101. The bottom plate 101 is provided so that each component thereon can be supported. Support components are symmetrically arranged on the upper part of the bottom plate 101. The support components are used to support the fixed cylinder 102 and each component therein. The two support components include positioning plates 202. The positioning plates 202 are provided so that the fixed cylinder 102 and each component thereon can be supported. Circular through holes are correspondingly formed on both of the two positioning plates 202. The circular through holes are provided so that the fixed cylinder 102 can be supported on its inner side wall. The circular through holes can be formed by a cutting machine, so that it is convenient for production and its connection structure is more stable.

[0030] As Figure 1 , 2 shown: The inner side walls of the two circular through holes are provided with a fixed cylinder 102. The fixed cylinder 102 is provided so that it can not only support the installation box 103 and each component thereon, but also block the liquid thrown out by the centrifugal cylinder 304. The outer walls on both ends of the fixed cylinder 102 are fixedly connected in the circular through holes, so that its connection structure is more stable. A square groove is formed on the upper part of the fixed cylinder 102. The square groove is provided so that the installation box 103 can be supported, and the brush 105 can brush the outer side wall of the centrifugal cylinder 304. The square groove and the circular cylinder can be integrally formed by die casting during production, so that its connection structure is more stable. An installation box 103 is arranged on the upper part of the fixed cylinder 102 and at a position corresponding to the square groove. The installation box 103 is provided so that the rotating rod 104 and each component thereon can be supported and can rotate thereon.

[0031] As Figure 1 , 2As shown: The installation box 103 is fixedly connected to the upper part of the fixed cylinder 102, making its connection structure more stable. Inside the installation box 103, a rotating rod 104 is rotatably connected by bearings. The rotating rod 104 is provided to drive the brush 105 to rotate through friction under the high-speed rotation of the centrifugal cylinder 304. Furthermore, when the brush 105 rotates, the rotating rod 104 can guide it and prevent it from getting stuck. The rotating rod 104 is rotatably connected to the installation box 103 by sleeving bearings at both ends, ensuring that the rotating rod 104 does not get stuck during rotation. Multiple fixing plates are arranged on the outer side wall of the rotating rod 104 to support the brush 105, and these multiple fixing plates are all welded to the outer side wall of the rotating rod 104.

[0032] As Figure 2 , 3 shown: A brush 105 is arranged on the outer side wall of each fixing plate. The brush 105 is provided so that when the centrifugal cylinder 304 rotates at a high speed, it drives multiple groups of brushes 105 to rotate accordingly. Thus, while the brush 105 can brush the centrifugal cylinder 304, the rotating brush 105 will fling out the impurities adhering to it, preventing the impurities from getting stuck in the holes of the centrifugal cylinder 304 when being flung out. Therefore, it can avoid blocking the filter holes. The brush 105 is fixedly connected to the outer side wall of the fixing plate by sol-gel connection, making its connection structure more stable.

[0033] As Figure 1 , 3 shown: A centrifugal component is arranged inside the fixed cylinder 102, which is used for centrifugal treatment during the processing of nitrocellulose. Each support component further includes a mounting plate 201 provided at the lower part of the positioning plate 202. The mounting plate 201 is provided to support the positioning plate 202, enabling the positioning plate 202 and all components on it to be stably supported. The mounting plate 201 is welded to the lower part of the positioning plate 202, making its connection structure more stable. The mounting plate 201 is connected to the upper part of the bottom plate 101 by bolts, facilitating the disassembly and assembly of the mounting plate 201 and all components on it.

[0034] As Figure 1 , 3As shown in the figure: The centrifugal assembly includes a support plate 301 provided on one side of the upper part of the bottom plate 101. The support plate 301 is provided to support the motor 302, preventing the output shaft of the motor 302 from rotating and self-rotating. The support plate 301 is bolted to one side of the upper part of the bottom plate 101, making it convenient to disassemble and assemble the support plate 301. On the vertical surface of the support plate 301 facing the positioning cylinder, there is a motor 302. The motor 302 is provided so that the output shaft of the motor 302 rotates to drive the transmission rod 303 and the centrifugal cylinder 304 to rotate accordingly. The motor 302 is bolted to the vertical surface of one side of the support plate 301, making it convenient to disassemble and assemble the motor 302 when maintenance or replacement is needed. The output shaft of the motor 302 is connected to the transmission rod 303 through a coupling, so that the output shaft of the motor 302 rotates, and then can drive the transmission rod 303 and the centrifugal cylinder 304 to rotate accordingly. The other end of the transmission rod 303 is connected to a centrifugal cylinder 304. The centrifugal cylinder 304 is provided so that the centrifugal cylinder 304 rotates, and then the nitrocellulose in the centrifugal cylinder 304 can be dehydrated and purified. The centrifugal cylinder 304 is fixedly connected to the other end of the transmission rod 303, making its connection structure more stable. The centrifugal cylinder 304 is arranged in the fixed cylinder 102. The centrifugal cylinder 304 is rotatably connected to the fixed cylinder 102 through bearings provided on the outer walls of both ends, so as to block the liquid thrown out and prevent the liquid from being thrown out and polluting the working environment, and at the same time, the centrifugal cylinder 304 can be supported.

[0035] As Figure 1 , 4 shown in the figure: A limit block 401 is provided on the side of the fixed cylinder 102 away from the motor 302. The limit block 401 is provided to support the opening and closing door 402. The limit block 401 is welded to one side of the fixed cylinder 102, making its connection structure more stable. One side of the limit block 401 is connected to the opening and closing door 402 through a hinge. The opening and closing door 402 is provided so that after the opening and closing door 402 is opened, nitrocellulose can be added into the centrifugal cylinder 304, and then it is convenient to take and place. The opening and closing door 402 can be connected to one side of the fixed cylinder 102 through a bolt. A handle 403 is provided on one side surface of the opening and closing door 402, making it convenient to open and close the opening and closing door 402. The handle 403 is bolted to one side surface of the opening and closing door 402, making it convenient to disassemble and assemble the handle 403.

[0036] As Figure 3 , 4As shown in the figure: On the side of the fixed cylinder 102 away from the installation box 103, a plurality of water drainage holes are provided. The water drainage holes are provided so that the solution and impurities thrown out by the centrifugal cylinder 304 can pass through the water drainage holes, and thus the waste solution and impurities can be guided, so that they can be collected. The water drainage holes can be integrally formed with the fixed cylinder 102 by die casting during production, so that its connection structure is more stable. On the outer side wall of the fixed cylinder 102 and corresponding to the plurality of water drainage holes, a water guide frame 501 is provided. The water guide frame 501 is provided to cooperate with the water guide hopper 502 to guide the waste gas solution and impurities. The water guide frame 501 is welded to the outer side wall of the fixed cylinder 102, so that its connection structure is more stable.

[0037] As Figure 3 , 4 shown: A water guide hopper 502 is provided at the lower part of the water guide frame 501. The water guide hopper 502 is provided to cooperate with the water guide frame 501 to guide the waste gas solution and impurities, so that the waste gas solution and impurities can fall into the collection box placed at the lower part of the water guide hopper 502 for collection. The water guide hopper 502 is welded to the lower part of the water guide frame 501, so that its connection structure is more stable. At the four corners of the lower part of the bottom plate 101, support legs 601 are provided. The support legs 601 are provided to support the various components on it. The support legs 601 are welded to the lower part of the bottom plate 101, so that its connection structure is more stable.

[0038] The usage method of the present utility model:

[0039] During use, open the opening and closing door 402, then place the nitrocellulose in the centrifugal cylinder 304, then close and fix the opening and closing door 402, and then start the motor 302 to drive the centrifugal cylinder 304 to rotate through the transmission rod 303, so that the nitrocellulose can be dehydrated and decontaminated, improving the purity of the product.

[0040] When the centrifugal cylinder 304 rotates, it will drive a plurality of brush hairs 105 and the rotating rod 104 to rotate together due to friction, and thus the outer side wall of the centrifugal cylinder 304 can be brushed. Because the centrifugal cylinder 304 rotates at a high speed and the rotating speed of the plurality of brush hairs 105 due to friction will not be higher than that of the centrifugal cylinder 304, the outer side wall of the centrifugal cylinder 304 can be continuously brushed, thus preventing the impurities thrown out of the centrifugal cylinder 304 from blocking the filter holes. Therefore, the centrifugation rate can be increased.

[0041] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] The above is the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A centrifuge for nitrocellulose, characterized in that: It comprises a bottom plate (101), the upper part of which is symmetrically provided with support components, the support components being used to support the fixed cylinder (102) and the components therein, the two groups of the support components comprising positioning plates (202), and the two positioning plates (202) are respectively provided with circular through holes; A fixing cylinder (102) is arranged on the inner side walls of the two circular through holes, a square groove is opened on the upper part of the fixing cylinder (102), a mounting box (103) is arranged on the upper part of the fixing cylinder (102) and at a position corresponding to the square groove, a rotating rod (104) is rotatably connected in the mounting box (103) via a bearing, a plurality of fixing plates are arranged on the outer side wall of the rotating rod (104), and a brush (105) is arranged on the outer side wall of each fixing plate; A centrifugal assembly is arranged in the fixed cylinder (102), and the centrifugal assembly is used for centrifugal treatment during the processing of nitrocellulose.

2. The centrifuge for nitrocellulose according to claim 1, characterized in that: Each group of the support components further comprises a mounting plate (201) arranged at the lower part of the positioning plate (202), and the mounting plate (201) is connected to the upper part of the base plate (101) by bolts.

3. The centrifuge for nitrocellulose according to claim 1, characterized in that: The centrifugal assembly comprises a support plate (301) arranged on one side of the upper part of the bottom plate (101); a motor (302) is arranged on a vertical surface of the support plate (301) facing the positioning cylinder; an output shaft of the motor (302) is connected to a transmission rod (303) via a coupling; the other end of the transmission rod (303) is connected to a centrifugal cylinder (304); and the centrifugal cylinder (304) is arranged in the fixed cylinder (102).

4. The centrifuge for nitrocellulose according to claim 1, characterized in that: A limiting block (401) is provided on the side of the fixed cylinder (102) away from the motor (302), one side of the limiting block (401) is connected to an opening and closing door (402) via a hinge, and a handle (403) is provided on one side surface of the opening and closing door (402).

5. The centrifuge for nitrocellulose according to claim 4, characterized in that: A plurality of drainage holes are provided on a side of the fixed cylinder (102) away from the installation box (103), a water guide frame (501) is provided on the outer wall of the fixed cylinder (102) and corresponding to the plurality of drainage holes, and a water guide hopper (502) is provided at the lower part of the water guide frame (501).

6. The centrifuge for nitrocellulose according to claim 1, characterized in that: Support legs (601) are provided at the four lower corners of the bottom plate (101).

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