A defoaming filter device for producing para-aramid fiber spinning dope

Abstract

This utility model belongs to the field of defoaming and filtration equipment, specifically relating to a defoaming and filtration device for the production of para-aramid spinning dope, including a tank body. Multiple evenly distributed support rods are fixedly connected to the outer side of the tank body, and two drain ports are fixedly connected to the bottom of the tank body. This utility model utilizes a hopper design to store liquid. A vacuum pump creates a vacuum inside the hopper to defoam the liquid. Before defoaming, a filter plate filters and purifies the liquid, removing impurities and preventing interference with the defoaming process. After the initial defoaming, the liquid is fed into a rotating drum. The rotation of the drum centrifuges the liquid, achieving a secondary defoaming process. Centrifugation also further refines the removal of impurities. Through this secondary filtration and defoaming process, the defoaming and filtration effect of the dope is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of defoaming and filtration equipment, specifically a defoaming and filtration equipment for the production of para-aramid spinning dope. Background Technology

[0002] The para-aramid spinning solution is a nematic liquid crystal solution formed using para-phenylenediamine (PPTA) polymer as solute and 98% concentrated sulfuric acid as solvent, possessing 10... 4 -10 5 The high viscosity of cP (cumulium carbonate) necessitates precise processing due to its strong corrosiveness and the presence of microbubbles and micron-sized impurities (such as undissolved particles and mechanical impurities). Its quality directly determines the mechanical properties and spinning stability of the final high-strength para-aramid fibers, making it a core intermediate product in aramid fiber preparation. During the production and processing of para-aramid spinning dope, degassing and filtration of the liquid are required.

[0003] In existing technologies, vacuum defoaming is commonly used to defoam liquids. However, para-aramid spinning solutions have high viscosity, and vacuum defoaming is insufficient, affecting the defoaming effect. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a defoaming and filtration device for the production of para-aramid spinning solution, which solves the problem of insufficient defoaming of the solution.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a defoaming and filtration device for producing para-aramid spinning dope, comprising a tank body, a plurality of evenly distributed support rods fixedly connected to the outer side of the tank body, two drain ports fixedly connected to the bottom of the tank body, a cover plate fixedly installed on the top of the tank body, an input pipe fixedly connected inside the cover plate, an electromagnetic valve installed on the input pipe, a hopper fixedly connected inside the tank body, an electromagnetic valve installed on the hopper, a vacuum pump fixedly installed at the right end of the tank body, a suction pipe installed at the left end of the vacuum pump, a centrifugal mechanism installed on the tank body, and a slag discharge mechanism installed on the centrifugal mechanism.

[0006] Preferably, the suction pipe is fixedly connected to the hopper, and the suction pipe communicates with the hopper. By designing the suction pipe, the inside of the hopper can be suctioned.

[0007] Preferably, the centrifugal mechanism includes a support ring, which is fixedly connected inside the tank. A rotating cylinder is rotatably connected to the inside of the support ring via a bearing. The rotating cylinder is rotatably connected to the tank. A support base is fixedly connected to the inner wall of the tank. A protective cover is fixedly connected to the top of the support base. A motor is fixedly installed inside the protective cover. The output end of the motor is rotatably connected to the protective cover. A gear is fixedly connected to the upper end of the motor output end. A gear ring meshes with the left end of the gear. The gear ring is fixedly sleeved on the outside of the rotating cylinder. A filter plate is slidably sleeved inside the tank. By designing this centrifugal mechanism, liquid can be centrifuged and degassed.

[0008] Preferably, a connecting rod is fixedly connected to the top of the filter plate, and the connecting rod is fixedly connected to the cover plate. By designing the connecting rod, the filter plate and the cover plate can be fixed together.

[0009] Preferably, the slag discharge mechanism includes a connecting seat, which is slidably fitted inside the rotating drum. A sealing ring is fixedly fitted to the outside of the connecting seat, and the sealing ring is slidably connected to the rotating drum. A sliding rod is slidably fitted inside the connecting seat, and a spring is provided on the outside of the sliding rod. An arc-shaped block is fixedly connected to the outside of the sliding rod, and the arc-shaped block is slidably connected to the connecting seat and the rotating drum. This slag discharge mechanism facilitates the discharge of impurities from inside the rotating drum.

[0010] Preferably, one end of the spring is fixedly connected to the connecting seat, and the other end of the spring is fixedly connected to the arc-shaped block. The spring is designed so that its force can be applied to the arc-shaped block.

[0011] Preferably, the inside of the rotating drum is provided with an arc-shaped groove, and an arc-shaped block is slidably connected inside the arc-shaped groove. By designing the arc-shaped groove, the arc-shaped block can slide inside the arc-shaped groove.

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

[0013] 1. This utility model utilizes a hopper to store liquids. A vacuum pump creates a vacuum inside the hopper to defoam the liquid. Before defoaming, a filter plate filters and purifies the liquid, removing impurities and preventing them from affecting the defoaming process. After the initial defoaming, the liquid is fed into a rotating drum. The drum's rotation centrifuges the liquid, achieving secondary defoaming. Centrifugation also further removes impurities. Through this secondary filtration and defoaming process, the defoaming and filtration effect of the original liquid is effectively improved.

[0014] 2. This utility model uses a sealing ring to connect and fix the connecting seat to the rotating drum. With the interlocking of the arc block and the arc groove, the connecting seat can be limited, thereby achieving the connection and fixation between the connecting seat and the rotating drum. The connecting seat can be removed from the rotating drum by pulling down forcefully, allowing the residual solid impurities inside the rotating drum to be recycled. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A partial three-dimensional sectional view of the structure;

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0018] Figure 4 This utility model Figure 2 Enlarged view of point B.

[0019] In the diagram: 1. Tank body; 2. Support rod; 3. Drain port; 4. Cover plate; 5. Input pipe; 6. Hopper; 7. Vacuum pump; 8. Centrifugal mechanism; 9. Slag discharge mechanism; 10. Suction pipe; 81. Support ring; 82. Rotary drum; 83. Support base; 84. Protective cover; 85. Motor; 86. Gear; 87. Gear ring; 88. Connecting rod; 89. Filter plate; 91. Connecting seat; 92. Sealing ring; 93. Slide rod; 94. Spring; 95. Arc block; 96. Arc groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 , Figure 2A degassing and filtration device for producing para-aramid spinning dope includes a tank 1. Multiple evenly distributed support rods 2 are fixedly connected to the outside of the tank 1. Two drain ports 3 are fixedly connected to the bottom of the tank 1. A cover plate 4 is fixedly installed on the top of the tank 1. An input pipe 5 is fixedly connected inside the cover plate 4, and a solenoid valve is installed on the input pipe 5. A hopper 6 is fixedly connected inside the tank 1, and a solenoid valve is installed on the hopper 6. A vacuum pump 7 is fixedly installed at the right end of the tank 1. A suction pipe 10 is installed at the left end of the vacuum pump 7, and the suction pipe 10 is fixedly connected to the hopper 6 and communicates with it. By designing the suction pipe 10, suction can be applied to the inside of the hopper 6. A centrifugal mechanism 8 is installed on the tank 1, and a slag discharge mechanism 9 is installed on the centrifugal mechanism 8.

[0022] Please see Figure 1 , Figure 2 , Figure 3 The centrifugal mechanism 8 includes a support ring 81. The support ring 81 is fixedly connected inside the tank body 1. A rotating cylinder 82 is rotatably connected to the inside of the support ring 81 via a bearing. The rotating cylinder 82 is rotatably connected to the tank body 1. A support seat 83 is fixedly connected to the inner side wall of the tank body 1. A protective cover 84 is fixedly connected to the top of the support seat 83. A motor 85 is fixedly installed inside the protective cover 84. The output end of the motor 85 is rotatably connected to the protective cover 84. A gear 86 is fixedly connected to the upper end of the output end of the motor 85. A gear ring 87 meshes with the left end of the gear 86. The gear ring 87 is fixedly sleeved on the outside of the rotating cylinder 82. A connecting rod 88 is fixedly connected to the top of the filter plate 89. The connecting rod 88 is fixedly connected to the cover plate 4. By designing the connecting rod 88, the filter plate 89 can be fixed to the cover plate 4. The filter plate 89 is slidably sleeved inside the tank body 1. By designing the centrifugal mechanism 8, the liquid can be centrifuged and degassed.

[0023] Please see Figure 1 , Figure 2 , Figure 4 The slag discharge mechanism 9 includes a connecting seat 91. The connecting seat 91 is slidably sleeved inside the rotating drum 82. A sealing ring 92 is fixedly sleeved on the outside of the connecting seat 91. The sealing ring 92 is slidably connected to the rotating drum 82. A sliding rod 93 is slidably sleeved inside the connecting seat 91. A spring 94 is provided on the outside of the sliding rod 93. One end of the spring 94 is fixedly connected to the connecting seat 91, and the other end of the spring 94 is fixedly connected to the arc-shaped block 95. By designing the spring 94, the force of the spring 94 can act on the arc-shaped block 95. An arc-shaped block 95 is fixedly connected to the outside of the sliding rod 93. The arc-shaped block 95 is slidably connected to the connecting seat 91 and the rotating drum 82. An arc-shaped groove 96 is opened inside the rotating drum 82. An arc-shaped block 95 is slidably connected inside the arc-shaped groove 96. By designing the arc-shaped groove 96, the arc-shaped block 95 can slide inside the arc-shaped groove 96. By designing the slag discharge mechanism 9, it is convenient to discharge impurities inside the rotating drum 82.

[0024] The specific implementation process of this utility model is as follows: When in use, the original liquid to be defoamed is input into the tank 1 through the input pipe 5. Then the solenoid valve on the input pipe 5 is closed, and the liquid can be initially filtered under the action of the filter plate 89. After filtration, the liquid will be input into the hopper 6. Then the vacuum pump 7 works, and the vacuum pump 7 draws the liquid into the hopper 6 through the suction pipe 10, which can create a vacuum inside the hopper 6 to achieve the purpose of initial defoaming of the liquid.

[0025] After the initial defoaming is completed, the solenoid valve on hopper 6 opens, and the liquid is input into the rotating drum 82. When the liquid is fully input, the output end of motor 85 drives gear 86 to rotate, gear 86 drives gear ring 87 to rotate, and gear ring 87 drives rotating drum 82 to rotate. This centrifugal defoaming of the liquid achieves the purpose of secondary defoaming of the liquid. In addition, the centrifugation of the liquid can also finely filter out impurities. Through secondary filtration and secondary defoaming, the defoaming and filtration effect of the original liquid can be effectively improved.

[0026] After defoaming is complete, the liquid will be discharged through the drain port 3, while solid impurities will remain inside the rotating drum 82. When the connecting seat 91 is pulled down, the connecting seat 91 drives the arc block 95 to move. The arc block 95 will roll along the arc surface of the arc groove 96. The arc block 95 will be squeezed and slide horizontally into the connecting seat 91. At the same time, the arc block 95 drives the slide rod 93 to move horizontally. The arc block 95 will squeeze the spring 94, which can separate the arc block 95 from the arc groove 96. Then the connecting seat 91 can be pulled out from the inside of the rotating drum 82, which is convenient for recycling the solid impurities remaining inside the rotating drum 82.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A defoaming and filtration device for producing para-aramid spinning solution, comprising a tank (1), characterized in that: Multiple evenly distributed support rods (2) are fixedly connected to the outside of the tank (1). Two drain ports (3) are fixedly connected to the bottom of the tank (1). A cover plate (4) is fixedly installed on the top of the tank (1). An input pipe (5) is fixedly connected inside the cover plate (4). A solenoid valve is installed on the input pipe (5). A hopper (6) is fixedly connected inside the tank (1). A solenoid valve is installed on the hopper (6). A vacuum pump (7) is fixedly installed on the right end of the tank (1). A suction pipe (10) is installed on the left end of the vacuum pump (7). A centrifugal mechanism (8) is installed on the tank (1). A slag discharge mechanism (9) is installed on the centrifugal mechanism (8).

2. The defoaming and filtration equipment for producing para-aramid spinning solution according to claim 1, characterized in that: The suction pipe (10) is fixedly connected to the hopper (6), and the suction pipe (10) is connected to the hopper (6).

3. The defoaming and filtration equipment for producing para-aramid spinning solution according to claim 1, characterized in that: The centrifugal mechanism (8) includes a support ring (81). The support ring (81) is fixedly connected inside the tank (1). A rotating cylinder (82) is rotatably sleeved inside the support ring (81) via a bearing. The rotating cylinder (82) is rotatably connected to the tank (1). A support seat (83) is fixedly connected to the inner side wall of the tank (1). A protective cover (84) is fixedly connected to the top of the support seat (83). A motor (85) is fixedly installed inside the protective cover (84). The output end of the motor (85) is rotatably connected to the protective cover (84). A gear (86) is fixedly connected to the upper end of the output end of the motor (85). A gear ring (87) meshes with the left end of the gear (86). The gear ring (87) is fixedly sleeved on the outside of the rotating cylinder (82). A filter plate (89) is slidably sleeved inside the tank (1).

4. The defoaming and filtration equipment for producing para-aramid spinning solution according to claim 3, characterized in that: A connecting rod (88) is fixedly connected to the top of the filter plate (89), and the connecting rod (88) is fixedly connected to the cover plate (4).

5. The defoaming and filtration equipment for producing para-aramid spinning solution according to claim 3, characterized in that: The slag discharge mechanism (9) includes a connecting seat (91), the connecting seat (91) is slidably sleeved inside the rotating drum (82), a sealing ring (92) is fixedly sleeved on the outside of the connecting seat (91), the sealing ring (92) is slidably connected to the rotating drum (82), a slide rod (93) is slidably sleeved inside the connecting seat (91), a spring (94) is provided on the outside of the slide rod (93), an arc-shaped block (95) is fixedly connected on the outside of the slide rod (93), the arc-shaped block (95) is slidably connected to the connecting seat (91), and the arc-shaped block (95) is slidably connected to the rotating drum (82).

6. The defoaming and filtration equipment for producing para-aramid spinning solution according to claim 5, characterized in that: One end of the spring (94) is fixedly connected to the connecting seat (91), and the other end of the spring (94) is fixedly connected to the arc block (95).

7. The defoaming and filtration equipment for producing para-aramid spinning solution according to claim 5, characterized in that: The inside of the rotating drum (82) is provided with an arc-shaped groove (96), and an arc-shaped block (95) is slidably connected inside the arc-shaped groove (96).

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