A concentration device for nitrocellulose production

Abstract

This utility model discloses a concentration device for the production of nitrocellulose, including a tank and an annular frame. An annular groove is formed on the inner wall of the annular frame, and a cross is rotatably connected to the inner side of the annular groove. A barrier frame is fixedly connected to the bottom of the cross, and a barrier net is fixedly connected between adjacent support members of the barrier frame. Two opposing lifting grooves are formed on the inner wall of the tank. Slider blocks are fixedly connected to the outer surfaces of both sides of the annular groove, and the two sliders are located inside the two lifting grooves and slidably connected to them. This utility model uses the barrier frame and barrier net to separate the material, thereby preventing the material from being carried out during liquid extraction, which could lead to blockage and material reduction, thus improving concentration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nitrocellulose production technology, specifically to a concentration device for nitrocellulose production. Background Technology

[0002] Nitrocellulose, also known as nitrocellulose or cellulose nitrate, is a product of the esterification reaction of cellulose with nitrate. It belongs to the cellulose ester class of cellulose derivatives. In the production process of nitrocellulose, concentration is a crucial step. The concentration process can remove excess water and impurities from the nitrocellulose solution, thereby improving the concentration and purity of the nitrocellulose.

[0003] Patent No. CN 221385315 U discloses a concentration device for nitrocellulose production. A drive motor rotates a driven gear via a drive gear, which in turn rotates the extraction pipe. This allows the input end of the extraction pipe to rotate to the position where the nitrocellulose material flocculates and separates, and the supernatant is extracted. The extraction process can be adjusted according to the depth of the supernatant, allowing for the discharge of supernatants of varying depths, thus improving the concentration effect. However, during use, it cannot be guaranteed that the nitrocellulose material will completely sink to the bottom during extraction; some material may float in the liquid and be extracted along with it, leading to blockages and material reduction. Therefore, a new technical solution is proposed to address this issue. Utility Model Content

[0004] The purpose of this invention is to provide a concentration device for the production of nitrocellulose, which solves the problem mentioned in the background art that during the extraction process, it cannot be guaranteed that the nitrocellulose material has completely settled to the bottom, and some material may float in the liquid and be drawn away together, resulting in blockage and material reduction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a concentration device for the production of nitrocellulose, comprising a tank and an annular frame. The inner sidewall of the annular frame is provided with an annular groove, and a cross is rotatably connected to the inner side of the annular groove. A barrier frame is fixedly connected to the bottom of the cross, and a barrier net is fixedly connected between adjacent support members of the barrier frame. The inner sidewall of the tank is provided with two opposing lifting grooves, and sliders are fixedly connected to the outer surfaces of the left and right sides of the annular groove. The two sliders are respectively located inside the two lifting grooves and slidably connected to the lifting grooves.

[0006] In this technical solution, the material and liquid are separated by setting up an annular frame and a barrier frame. The annular frame, along with the barrier frame, is lowered. During the descent, the barrier frame and barrier net continuously push the material downward, thus separating the material from the liquid. At this point, the liquid can be extracted without worrying about blockage or material loss. Furthermore, the annular frame is equipped with an annular groove, giving the barrier frame the ability to rotate. During use, it can rotate to agitate the liquid and material, allowing the material to combine with the flocculant more quickly, making extraction more convenient and faster.

[0007] Preferably, a support frame is fixedly connected to the top of the annular groove, and two electric actuators are fixedly connected to the top of the tank. The telescopic ends of the electric actuators pass through the top of the tank and are fixedly connected to the support frame.

[0008] Preferably, a protective frame is fixedly connected to the center of the top of the support frame, a servo motor is fixedly connected to the inner side of the protective frame, and the center of the cross-shaped top of the drive shaft of the servo motor is fixedly connected to the end of the cross.

[0009] Preferably, a fixing plate is fixedly connected to the outer surface of one of the electric actuators, and an extraction tube is fixedly connected through and to the surface of the fixing plate. The top end of the extraction tube is connected to the bottom end of the hose, and the top end of the hose passes through the top of the tank and is connected to the inlet of the liquid pump. The liquid pump is fixedly connected to the top surface of the tank.

[0010] Preferably, a plurality of equidistant stirring rods are fixedly connected to the bottom surface of the barrier frame, and the stirring rods are parallel to the inner bottom of the tank.

[0011] Preferably, the tank body has a feed inlet on its side wall, and the bottom end of the extraction pipe is in contact with the barrier net.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model separates the material from the liquid by setting up an annular frame and a barrier frame. The annular frame carries the barrier frame down, and during the descent, the barrier frame and barrier net continuously push the material downward, thereby separating the material from the liquid. At this time, the liquid can be extracted in one direction without worrying about blockage or material removal, thus improving the concentration efficiency.

[0014] 2. This utility model has an annular groove on the ring frame, so the barrier frame has the ability to rotate. It can rotate during use, thereby stirring the liquid and materials. After the flocculant is added, it accelerates the combination with the materials and causes precipitation, thus making the extraction more convenient and faster. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is an overall view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the feed inlet of this utility model;

[0018] Figure 3 This is a cross-sectional view of the lifting groove of this utility model;

[0019] Figure 4 This is a schematic diagram of the barrier structure of this utility model.

[0020] In the diagram: 1. Tank body; 101. Inlet; 102. Lifting groove; 2. Electric actuator; 3. Support frame; 4. Annular frame; 401. Annular groove; 402. Slider; 5. Cross; 6. Barrier frame; 7. Barrier net; 8. Stirring rod; 9. Protective frame; 10. Servo motor; 11. Fixing plate; 12. Extraction pipe; 121. Hose; 13. Liquid pump. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description will further elaborate on them in conjunction with specific embodiments.

[0022] A concentration device for the production of nitrocellulose, see [link to relevant documentation] Figures 1 to 4 The system includes a tank body 1 and an annular frame 4. An annular groove 401 is formed on the inner wall of the annular frame 4. A cross 5 is rotatably connected to the inner side of the annular groove 401. A barrier frame 6 is fixedly connected to the bottom of the cross 5. A barrier net 7 is fixedly connected between adjacent support members of the barrier frame 6. The barrier net 7 is a filter screen with small pores, which can block the material. The four corners of the cross 5 are located inside the annular groove 401, so as to ensure that the cross 5 will not detach. The cross 5 and the barrier frame 6 are raised and lowered under the action of the annular frame 4, pushing the material below, thereby separating the material from the liquid, facilitating the extraction of the liquid, improving the concentration efficiency of the material, and allowing the extraction of liquid at different heights according to the descent height, making it highly practical. Several equidistant stirring rods 8 are fixedly connected to the bottom surface of the barrier frame 6. The stirring rods 8 are parallel to the inner bottom of the tank body 1. The cross 5 and the barrier frame 6 have the ability to rotate. During the rotation, the stirring rods 8 at the bottom of the barrier frame 6 can also stir the material and liquid, thereby promoting the combination of flocculant and material, accelerating sedimentation, and facilitating extraction.

[0023] It is worth noting that, such as Figure 1As shown, the side wall of the tank 1 is provided with a feed inlet 101. When adding material into the feed inlet 101, the entire ring frame 4, cross 5 and barrier frame 6 need to be raised to a position higher than the feed inlet 101 to ensure that the material is always below the barrier net 7. The bottom end of the extraction pipe 12 is in contact with the barrier net 7, which makes it more convenient to extract liquid.

[0024] Specifically, such as Figure 2 and Figure 3 As shown, a support frame 3 is fixedly connected to the top of the annular groove 401, and two electric push rods 2 are fixedly connected to the top of the tank body 1. The telescopic ends of the electric push rods 2 pass through the top of the tank body 1 and are fixedly connected to the support frame 3. Two opposing lifting grooves 102 are provided on the inner side wall of the tank body 1. Slider 402 is fixedly connected to the outer surfaces of the left and right sides of the annular groove 401. The two sliders 402 are located inside the two lifting grooves 102 respectively and are slidably connected to the lifting grooves 102. After the electric push rod 2 is started, it drives the entire support frame 3 to rise and fall, thereby causing the annular frame 4 below to move along the lifting grooves 102. The lifting grooves 102 can ensure that the annular frame 4 remains stable during the rising and falling process. In addition, a sealing strip is provided at the position where the annular frame 4 contacts the inner wall of the tank body 1 to ensure that the material will not pass through the edge.

[0025] Specifically, such as Figure 2 As shown, a protective frame 9 is fixedly connected to the top center of the support frame 3, and a servo motor 10 is fixedly connected to the inner side of the protective frame 9. The transmission shaft of the servo motor 10 is fixedly connected to the top center of the cross 5. After the servo motor 10 is started, it drives the cross 5 to rotate. The barrier frame 6 and the stirring rod 8 below the cross 5 will stir the material and promote the combination of the material and the flocculant.

[0026] Furthermore, such as Figure 2 As shown, a fixing plate 11 is fixedly connected to the outer surface of one of the electric actuators 2. An extraction tube 12 is fixedly connected through and to the surface of the fixing plate 11. The top end of the extraction tube 12 is connected to the bottom end of the hose 121. The top end of the hose 121 passes through the top of the tank 1 and is connected to the inlet of the liquid pump 13. The liquid pump 13 is fixedly connected to the top surface of the tank 1. The hose 121 is reserved with sufficient length to facilitate the normal raising and lowering of the extraction tube 12. After the liquid pump 13 is started, the clear liquid and excess liquid in the tank 1 will be extracted through the hose 121 and the extraction tube 12, thereby improving the concentration efficiency.

[0027] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0028] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A concentration apparatus for the production of nitrocellulose comprising a tank body (1) and an annular shelf (4), characterized in that: The inner wall of the ring frame (4) is provided with an annular groove (401), and a cross (5) is rotatably connected to the inner side of the annular groove (401). A barrier frame (6) is fixedly connected to the bottom of the cross (5), and a barrier net (7) is fixedly connected between adjacent support members of the barrier frame (6). The inner wall of the tank (1) is provided with two opposing lifting grooves (102). Slider (402) is fixedly connected to the outer surfaces of the left and right sides of the annular groove (401). The two sliders (402) are located inside the two lifting grooves (102) and are slidably connected to the lifting grooves (102).

2. A concentration apparatus for the production of nitrocellulose according to claim 1, characterized in that: The top of the annular groove (401) is fixedly connected to a support frame (3), and the top of the tank (1) is fixedly connected to two electric push rods (2). The telescopic ends of the electric push rods (2) pass through the top of the tank (1) and are fixedly connected to the support frame (3).

3. A concentration apparatus for the production of nitrocellulose according to claim 2, characterized in that: A protective frame (9) is fixedly connected to the center of the top of the support frame (3), and a servo motor (10) is fixedly connected to the inner side of the protective frame (9). The center of the top of the cross (5) at the end of the drive shaft of the servo motor (10) is fixedly connected.

4. A concentration apparatus for nitrocellulose production according to claim 2, characterized in that: One of the electric actuators (2) has a fixed plate (11) fixedly connected to its outer surface. A suction tube (12) is fixedly connected through the surface of the fixed plate (11). The top end of the suction tube (12) is connected to the bottom end of the hose (121). The top end of the hose (121) passes through the top of the tank (1) and is connected to the inlet of the liquid pump (13). The liquid pump (13) is fixedly connected to the top surface of the tank (1).

5. A concentration apparatus for nitrocellulose production according to claim 1, characterized in that: The bottom surface of the barrier frame (6) is fixedly connected with several equidistant stirring rods (8), and the stirring rods (8) are parallel to the inner bottom of the tank (1).

6. A concentration apparatus for the production of nitrocellulose according to claim 4, characterized in that: The tank (1) has a feed inlet (101) on its side wall, and the bottom end of the extraction pipe (12) is in contact with the barrier net (7).

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