A cotton pressing device for nitrocellulose

Abstract

The utility model relates to nitrocellulose compression technical field discloses a kind of nitrocellulose cotton pressing equipment, including compression box, the front end of compression box is equipped with door by hinged rotary installation, the upper end of one side of compression box is fixedly installed with air extractor, the air extraction end of air extractor is communicated with exhaust pipe, another end of exhaust pipe is communicated with processing box.The utility model technical scheme can make driven gear drive fixed rod to rotate, rubber stick on fixed rod will follow rotation, make rubber stick constantly knock filter screen, again cooperate spring on filter screen, drive filter screen reciprocating motion, to reach the cleaning of adherend below filter screen, to guarantee the oxygen discharge effect in nitrocellulose inside, rack can also make extrusion plate move to right, so that extrusion plate carries out cotton pressing treatment to nitrocellulose in compression box, to reach the cotton pressing treatment to nitrocellulose while cleaning filter screen, to facilitate subsequent cotton pressing operation of nitrocellulose.

Description

Technical Field

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

[0002] Nitrocellulose, also known as nitrocellulose, is produced by soaking cotton in a mixed acid solution of nitric acid and sulfuric acid, causing the cellulose in the cotton to undergo a nitration reaction. The nitrogen content in nitrocellulose can be controlled by adjusting the soaking time of the cotton in the acid solution. Nitrocellulose is a white or slightly yellow fibrous polymer, mainly appearing as flocculent material. It is highly susceptible to spontaneous combustion or explosions, therefore, nitrocellulose should be stored in a dark and dry environment. Nitrocellulose is mainly used in the manufacturing of smokeless gunpowder and varnishes, and is a chemical product with important functions.

[0003] A search revealed a cotton pressing device for nitrocellulose production (CN218989133U), comprising a machine body with a compression chamber at the bottom inside the machine body, a discharge box movably connected inside the compression chamber, a transmission chamber above the compression chamber, and a feed inlet fixedly connected to the left side of the machine body; a compression mechanism including a motor fixedly connected to the top inside the machine body, a transmission shaft fixedly connected to the bottom of the motor, the bottom end of the transmission shaft passing through the transmission chamber and fixedly connected to a main gear, secondary gears meshing on the left and right sides of the main gear, a screw movably connected to the inner wall of the secondary gear, a power switch fixedly connected to the top right side of the machine body, and the bottom end of the screw passing through the transmission chamber and through the compression chamber.

[0004] The technical solution has at least the following drawbacks: While this invention can ensure the safety of nitrocellulose compression by evacuating air before compression, the filter screen is easily clogged during the evacuation process. Failure to clean the filter screen in time can easily affect subsequent compression and evacuation, necessitating improvement. Therefore, we propose a nitrocellulose compression device. Utility Model Content

[0005] The purpose of this invention is to provide a nitrocellulose pressing device that solves the problem mentioned in the background art, where the filter screen is easily clogged during the air extraction process, and failure to clean the filter screen in time can easily affect subsequent pressing and air extraction.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nitrocellulose pressing device, comprising a compression chamber, a door of which is rotatably mounted at the front end via a hinge, an air extractor fixedly mounted on the upper side of one side of the compression chamber, an exhaust pipe connected to the air extraction end of the air extractor, a processing chamber connected to the other end of the exhaust pipe, the lower end of the processing chamber connected to the upper end of the compression chamber, a servo motor fixedly mounted on the other side of the upper end of the compression chamber, and a transmission rod mounted on the output end of the servo motor;

[0007] A circular gear is fixedly installed in the middle of the transmission rod, and a drive gear is fixedly installed at the upper end of the transmission rod. A rack is provided through the other side of the compression box, and an extrusion plate is fixedly installed at the other end of the rack. A fixing rod is rotatably installed at the upper end of the compression box via a bearing, and a rubber rod is provided at one end of the fixing rod. A filter screen is provided at the upper end of the inner cavity of the processing box.

[0008] By adopting the above technical solution, the driving gear on the transmission rod can drive the driven gear to rotate, which in turn drives the fixed rod to rotate. The rubber rod on the fixed rod will rotate accordingly, continuously striking the filter screen. Combined with the spring on the filter screen, this causes the filter screen to move up and down reciprocally, thereby cleaning the deposits on the bottom of the filter screen and ensuring the effective removal of oxygen from the nitrocellulose. Furthermore, during the rotation of the transmission rod, the circular gear on the transmission rod can drive the rack to move, which in turn drives the extrusion plate to move to the right, causing the extrusion plate to compress the nitrocellulose in the compression chamber. This achieves the simultaneous cleaning of the filter screen and compression of the nitrocellulose, facilitating subsequent compression operations of the nitrocellulose.

[0009] Optionally, a driven gear is fixedly installed at the other end of the fixing rod, and the driving gear meshes with the driven gear.

[0010] By adopting the above technical solution, the fixed rod can be driven to rotate through the driving gear and the driven gear.

[0011] Optionally, the circular gear is disposed on the front side of the rack, and the rack meshes with the circular gear.

[0012] By adopting the above technical solution, the extrusion plate can be moved by the cooperation of the rack and pinion and the circular gear.

[0013] Optionally, the size of the extrusion plate is adapted to the inner cavity size of the compression box, and the extrusion plate is movably connected to the inner cavity of the compression box.

[0014] By adopting the above technical solution and setting up the extrusion plate, nitrocellulose can be extruded.

[0015] Optionally, a spring is fixedly installed at the upper end of the filter screen, and the other end of the spring is fixedly connected to the upper end of the inner cavity of the treatment box.

[0016] By adopting the above technical solution and using the spring, the filter screen can be reset.

[0017] Optionally, the rubber rods are arranged symmetrically and positioned below the filter screen.

[0018] By adopting the above technical solution and using rubber rods, the filter screen can be tapped.

[0019] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0020] This technical solution, through the design of a compression chamber, a vacuum pump, a processing chamber, a servo motor, a circular gear, a filter screen, and a driven gear, allows the driving gear on the transmission rod to rotate, which in turn drives the fixed rod to rotate. The rubber rod on the fixed rod rotates accordingly, continuously striking the filter screen. Combined with the spring on the filter screen, this causes the filter screen to reciprocate up and down, thereby cleaning the deposits below the filter screen and ensuring the effective removal of oxygen from the nitrocellulose. Furthermore, during the rotation of the transmission rod, the circular gear on the transmission rod drives the rack to move, which in turn moves the extrusion plate to the right, compressing the nitrocellulose inside the compression chamber. This achieves simultaneous cleaning of the filter screen and compression of the nitrocellulose, facilitating subsequent compression operations. Attached Figure Description

[0021] 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:

[0022] Figure 1 This is a schematic diagram of the main structure of a nitrocellulose pressing device according to the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of a nitrocellulose pressing device according to the present invention;

[0024] Figure 3 This is a partially enlarged structural diagram of section A of a nitrocellulose pressing device according to this utility model.

[0025] In the diagram: 1. Compression chamber; 11. Chamber door; 12. Vacuum pump; 13. Exhaust pipe; 14. Processing chamber; 2. Servo motor; 21. Transmission rod; 22. Drive gear; 23. Circular gear; 24. Rack; 25. Extrusion plate; 3. Fixing rod; 4. Rubber rod; 5. Filter screen; 6. Spring; 7. Driven gear. Detailed Implementation

[0026] Please see Figure 1-3 This utility model provides a technical solution: a nitrocellulose pressing device, including a compression box 1, a box door 11 is rotatably installed at the front end of the compression box 1 via a hinge, an air extractor 12 is fixedly installed at the upper end of one side of the compression box 1, the air extraction end of the air extractor 12 is connected to an exhaust pipe 13, the other end of the exhaust pipe 13 is connected to a processing box 14, the lower end of the processing box 14 is connected to the upper end of the compression box 1, a servo motor 2 is fixedly installed on the other side of the upper end of the compression box 1, and a transmission rod 21 is installed at the output end of the servo motor 2;

[0027] A circular gear 23 is fixedly installed in the middle of the transmission rod 21, and a drive gear 22 is fixedly installed at the upper end of the transmission rod 21. A rack 24 is installed through the other side of the compression box 1, and a squeezing plate 25 is fixedly installed at the other end of the rack 24. A fixing rod 3 is rotatably installed at the upper end of the compression box 1 via a bearing. A rubber rod 4 is installed at one end of the fixing rod 3. A filter screen 5 is installed at the upper end of the inner cavity of the processing box 14. The size of the squeezing plate 25 is adapted to the inner cavity size of the compression box 1, and the squeezing plate 25 is movably connected to the inner cavity of the compression box 1. The squeezing plate 25 can squeeze the nitrocellulose. A spring 6 is fixedly installed at the upper end of the filter screen 5, and the other end of the spring 6 is fixedly connected to the upper end of the inner cavity of the processing box 14. The spring 6 can drive the filter screen 5 to reset. The rubber rods 4 are symmetrically arranged and located below the filter screen 5. The rubber rods 4 can be used to tap the filter screen 5.

[0028] The other end of the fixed rod 3 is fixedly installed with a driven gear 7. The driving gear 22 meshes with the driven gear 7. Through the driving gear 22 and the driven gear 7, the fixed rod 3 can be driven to rotate.

[0029] The circular gear 23 is located on the front side of the rack 24, and the rack 24 meshes with the circular gear 23. Through the cooperation between the rack 24 and the circular gear 23, the extrusion plate 25 can be moved.

[0030] During evacuation, the nitrocellulose stored on the right side of the compression chamber 1 is evacuated using the evacuator 12 and exhaust pipe 13, thereby reducing the oxygen content inside the nitrocellulose and reducing the risk of overheating and spontaneous combustion during compression. After evacuation, the servo motor 2 is turned on, driving the transmission rod 21 to rotate. The drive gear 22 on the transmission rod 21 drives the driven gear 7 to rotate, which in turn drives the fixed rod 3 to rotate. The rubber rod 4 on the fixed rod 3 rotates accordingly, continuously striking the filter screen 5. The spring 6 on the filter screen 5 drives the filter screen 5 to move up and down, thereby cleaning the deposits below the filter screen 5 and ensuring the oxygen is discharged from the inside of the nitrocellulose. At the same time, during the rotation of the transmission rod 21, the circular gear 23 on the transmission rod 21 drives the rack 24 to move. The rack 24 drives the extrusion plate 25 to move to the right, so that the extrusion plate 25 compresses the nitrocellulose in the compression box 1. This achieves the simultaneous cleaning of the filter screen 5 and compression of the nitrocellulose, thus facilitating the subsequent compression operation of the nitrocellulose.

Claims

1. A nitrocellulose pressing device, comprising a compression chamber (1), characterized in that: The front end of the compression box (1) is fitted with a door (11) via a hinge. An air extractor (12) is fixedly installed on the upper side of one side of the compression box (1). The air extraction end of the air extractor (12) is connected to an exhaust pipe (13). The other end of the exhaust pipe (13) is connected to a processing box (14). The lower end of the processing box (14) is connected to the upper end of the compression box (1). A servo motor (2) is fixedly installed on the other side of the upper end of the compression box (1). A transmission rod (21) is installed on the output end of the servo motor (2). A circular gear (23) is fixedly installed in the middle of the transmission rod (21), and a drive gear (22) is fixedly installed at the upper end of the transmission rod (21). A rack (24) is provided through the other side of the compression box (1), and an extrusion plate (25) is fixedly installed at the other end of the rack (24). A fixing rod (3) is rotatably installed at the upper end of the compression box (1) through a bearing. A rubber rod (4) is provided at one end of the fixing rod (3), and a filter screen (5) is provided at the upper end of the inner cavity of the processing box (14).

2. The nitrocellulose pressing equipment according to claim 1, characterized in that: The other end of the fixed rod (3) is fixedly installed with a driven gear (7), and the driving gear (22) meshes with the driven gear (7).

3. The nitrocellulose pressing equipment according to claim 1, characterized in that: The circular gear (23) is disposed on the front side of the rack (24), and the rack (24) meshes with the circular gear (23).

4. The nitrocellulose pressing equipment according to claim 1, characterized in that: The size of the extrusion plate (25) is adapted to the inner cavity size of the compression box (1), and the extrusion plate (25) is movably connected to the inner cavity of the compression box (1).

5. The nitrocellulose pressing equipment according to claim 1, characterized in that: A spring (6) is fixedly installed at the upper end of the filter screen (5), and the other end of the spring (6) is fixedly connected to the upper end of the inner cavity of the processing box (14).

6. The nitrocellulose pressing equipment according to claim 1, characterized in that: The rubber rods (4) are symmetrically arranged and are positioned below the filter screen (5).

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