Spinning solution defoaming device

Abstract

The utility model relates to the technical field of chemical fiber spinning stock solution defoaming, and discloses a spinning stock solution defoaming device which comprises a defoaming tower body, the defoaming tower body comprises an outer container and an inner container, the outer container comprises an upper outer container and a lower outer container, the inner container comprises a feeding cylinder and an exhaust inner container, two feeding ports and a stirring port are formed in the top of the feeding cylinder, and the stirring port is communicated with the upper outer container and the lower outer container. A motor arranged at the top end of the stirring opening is fixedly connected with the stirring opening in a sealed mode, the output end of the motor is arranged in the inner container and fixedly connected with a stirring shaft arranged in the inner container, a discharging opening is formed in the bottom end of the defoaming tower body, the discharging opening is provided with a four-way pipe which is fixedly communicated with the discharging opening, and an exhaust guide pipe which penetrates through the lower outer container and is communicated with the outside is further arranged on the upper portion of the exhaust inner container. The liquid level temperature and pressure in the device can be monitored at any time; primary sieving and defoaming are performed on the stock solution, and then spiral upward stirring is performed, so that upward removal of bubbles is facilitated; the device can be conveniently fixed and moved; the problem of damage caused by the fact that stock solution enters the vacuum pump due to overhigh liquid level in the defoaming process can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of defoaming of chemical fiber spinning dope, and specifically relates to a defoaming device for spinning dope. Background Technique

[0002] In the process of preparing various chemical fiber dope, it is inevitable to mix in air. The air exists in the dope in the form of bubbles. The existence of bubbles will make spinning difficult, with more broken ends and hairy filaments, and the product performance deteriorates. Therefore, before spinning, it must go through a defoaming process to remove the bubbles in the dope. Generally, static defoaming and continuous defoaming are used. In the existing process, the defoaming method of spinning dope is that the dope slowly circulates in the storage tank for a long time, and the bubbles in the dope slowly float up and escape from the liquid surface. The defoaming process is slow, time-consuming, and requires a very large storage tank. Since the spinning dope is relatively viscous, the tiny bubbles float up slowly and cannot escape from the liquid surface within the residence time in the dope storage tank, and the defoaming effect of the tiny bubbles is not good.

[0003] The existing vacuum defoaming lacks a liquid level detection function, resulting in the frequent occurrence of the feeding pump idling. The dope has a high viscosity, and it is difficult for gas to separate from the colloid, and the defoaming effect is poor. When the vacuum defoaming tank evacuates to remove bubbles, the colloid molecules are easy to enter the vacuum pump, causing damage to the vacuum pump. Content of the Utility Model

[0004] The purpose of the utility model is to provide a defoaming device for spinning dope to solve the above problems.

[0005] To achieve the above purpose, the following technical solutions are provided:

[0006] A defoaming device for spinning dope, comprising: a defoaming tower body, the defoaming tower body includes an outer cylinder and an inner cylinder. The outer cylinder includes: an upper outer cylinder with a cylindrical structure and a lower outer cylinder with a conical structure. The inner cylinder includes: a feeding cylinder with a horn-shaped structure and an exhaust inner cylinder with a conical structure. The feeding cylinder is arranged in the upper part inside the outer cylinder. At the top of the feeding cylinder, two feeding ports and a stirring port are arranged radially. The stirring port is arranged at the top of the outer cylinder. The two feeding ports are respectively arranged on both sides of the stirring port. The motor arranged at the top of the stirring port is hermetically and fixedly connected to the stirring port. The output end of the motor is arranged in the inner cylinder and fixedly connected to the stirring shaft arranged in the inner cylinder. The exhaust inner cylinder is arranged at the bottom of the feeding cylinder. The outer wall of the exhaust inner cylinder is relatively fixed to the inner wall of the lower outer cylinder. A discharge port is arranged at the bottom end of the defoaming tower body. The discharge port is fixedly connected with a four-way pipe communicating with it. An exhaust duct penetrating the lower outer cylinder and communicating with the outside is also arranged at the upper part of the exhaust inner cylinder.

[0007] Preferably, a vacuum extraction port and a vacuum pressure gauge are arranged on the side wall of the upper outer cylinder.

[0008] Preferably, a certain number of lifting lugs are arranged on the top surface of the upper outer cylinder.

[0009] Preferably, a lighted viewing mirror is provided at the top of the side wall of the lower outer tank, and viewing windows are also provided in the middle of the side wall of the lower outer tank and are distributed staggeredly.

[0010] Preferably, a support plate is provided between the feed cylinder and the upper outer tank, and a certain number of support frames are provided between the exhaust inner tank and the lower outer tank.

[0011] Preferably, upward spiral stirring blades are also provided on the stirring shaft.

[0012] Preferably, one end of the four-way pipe is provided with a thermometer port, one end is provided with a liquid level control port, and its bottom end is provided with a discharge connection port.

[0013] Preferably, a grille for filtering is provided at the bottom of the inner wall of the feed cylinder.

[0014] Preferably, a certain number of supports are also provided along the circumferential direction on the upper part of the outer wall of the lower outer tank.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model is provided with a vacuum pumping port to pump vacuum during defoaming, which speeds up the defoaming speed of the stock solution. By setting a vacuum pressure gauge, a lighted viewing mirror, a viewing window exhaust duct, a thermometer port and a liquid level control port, the temperature and pressure inside the device can be monitored at any time, and then the liquid level, temperature and pressure inside the device can be controlled and adjusted, effectively preventing the stock solution from entering the vacuum pump due to too high a liquid level;

[0017] A grille and upward spiral stirring blades are provided. When feeding, the stock solution is first preliminarily sieved and defoamed, and then further stirred spirally upward, which is conducive to the upward escape of bubbles;

[0018] Supports and lifting lugs are provided to facilitate the fixing and displacement of the device;

[0019] By setting the upper outer tank with a cylindrical structure and the lower outer tank with a conical structure, the position of the vacuum pumping port is raised, which can avoid the problem that the stock solution enters the vacuum pump and damages the vacuum pump due to too high a liquid level during the defoaming process. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is Figure 1 the top view of

[0022] The reference numerals shown in the figure are: 1 - motor, 2 - feed inlet, 3 - lifting lug, 4 - stirring shaft, 5 - vacuum extraction port, 6 - vacuum pressure gauge, 7 - sight glass with lamp, 8 - grille, 9 - exhaust duct, 10 - support, 11 - stirring fan blade, 12 - viewing window, 13 - support plate, 14 - support frame, 15 - discharge port, 16 - thermometer port, 17 - liquid level control port, 18 - discharge connection port, 19 - upper outer casing, 20 - lower outer casing, 21 - feed cylinder, 22 - exhaust inner casing, 23 - stirring port, 24 - four-way pipe; Detailed implementation

[0023] The following further elaborates on this design solution in conjunction with the attached drawings.

[0024] As Figures 1-2As shown in the figure, a degassing device for spinning dope includes: a degassing tower body, which includes an outer shell and an inner shell. The outer shell is a double-layer vacuum structure as a whole. The outer shell includes: an upper outer shell 19 with a cylindrical structure and a lower outer shell 20 with a conical structure. The lower outer shell 20 is the inner shell, which includes: a feed cylinder 21 with a horn-shaped structure and an exhaust inner shell 22 with a conical structure. A support plate 13 is provided between the feed cylinder 21 and the upper outer shell 19. A certain number of support frames 14 are provided between the exhaust inner shell 22 and the lower outer shell 20. The exhaust inner shell 22 is a conical structure with an open top. The feed cylinder 21 is arranged in the upper part of the outer shell. Two feed ports 2 and a stirring port 23 are radially arranged at the top of the feed cylinder 21. The stirring port 23 is arranged at the top of the outer shell. A grille net 8 for filtering is provided at the bottom of the inner wall of the feed cylinder 21 to preliminarily screen and remove air bubbles from the injected dope. The two feed ports 2 are respectively arranged on both sides of the stirring port 23, and two different materials can be added simultaneously. A motor 1 provided at the top of the stirring port 23 is hermetically and fixedly connected to the stirring port 23. The output end of the motor 1 is arranged in the inner shell and fixedly connected to a stirring shaft 4 arranged in the inner shell, which is used to drive the stirring shaft 4 to stir the dope in the degassing tower body. Stirring blades 11 spiraling upward are also arranged on the stirring shaft 4 to facilitate the upward discharge of air in the dope. The exhaust inner shell 22 is arranged at the bottom of the feed cylinder 21 to receive the dope poured from the feed port 2. The outer wall at the bottom end of the exhaust inner shell 22 is relatively fixed to the inner wall of the lower outer shell 20. A discharge port 15 is provided at the bottom end of the degassing tower body. A four-way pipe 24 is fixedly connected to the discharge port 15 and runs through it. One end of the four-way pipe 24 is provided with a thermometer port 16 to connect a thermometer to measure the temperature inside the degassing tower body in real time. One end is provided with a liquid level control port 17 to control the liquid level height inside the degassing tower body. A sight glass 7 with a lamp is provided at the top of the side wall of the lower outer shell 20. Windows 12 are also provided in a staggered manner in the middle of the side wall of the lower outer shell 20. When it is monitored that the liquid level reaches the critical value during the heating operation, the liquid level control port 17 can be opened to pour out the dope inside the degassing tower body. A discharge connection port 18 is provided at its bottom end. A vacuum extraction port 5 and a vacuum pressure gauge 6 are provided on the side wall of the upper outer shell 19. An exhaust duct 9 running through the lower outer shell 20 and communicating with the outside is also provided in the upper part of the exhaust inner shell 22. When it is detected that the pressure inside the degassing tower body is too high or too low during the heating operation, the exhaust duct 9 can be opened for adjustment. A certain number of lifting lugs 3 are provided on the top surface of the upper outer shell 19. A certain number of supports 10 are also provided along the circumference on the upper part of the outer wall of the lower outer shell 20 to move or fix the degassing tower body.

Claims

1. A spinning solution degassing device, characterized in that: include: A degassing tower body, the degassing tower body comprises an outer shell and an inner shell, the outer shell comprises: an upper outer shell of a cylindrical structure and a lower outer shell of a conical structure, the inner shell comprises: a feeding barrel of a trumpet-shaped structure and an exhausting inner shell of a conical structure, the feeding barrel is arranged at the upper inner part of the outer shell, the top of the feeding barrel is radially provided with two feeding ports and a stirring port, the stirring port is arranged at the top of the outer shell, the two feeding ports are respectively arranged on both sides of the stirring port, the motor provided at the top of the stirring port is sealed and fixedly connected with the stirring port, the output end of the motor is arranged in the inner shell and fixedly connected with the stirring shaft arranged in the inner shell, the exhausting inner shell is arranged at the bottom of the feeding barrel, the outer wall of the exhausting inner shell is relatively fixed to the inner wall of the lower outer shell, the bottom end of the degassing tower body is provided with a discharging port, the discharging port is provided with a four-way pipe which is fixedly connected with the discharging port, and the upper part of the exhausting inner shell is also provided with an exhaust duct which passes through the lower outer shell and is connected with the outside.

2. A spinning solution degassing device according to claim 1, characterized in that: The upper outer liner side wall is provided with a vacuum port and a vacuum pressure gauge.

3. A spinning solution degassing device according to claim 1, characterized in that: A certain number of lifting ears are arranged on the top surface of the upper outer bladder.

4. A spinning solution degassing device according to claim 1, characterized in that: A lighted viewing mirror is provided on the top of the lower outer liner side wall, and staggered viewing windows are also provided in the middle of the lower outer liner side wall.

5. The spinning solution degassing device according to claim 1, characterized in that: A support plate is provided between the feed tube and the upper outer liner, and a certain number of support frames are provided between the exhaust inner liner and the lower outer liner.

6. The spinning solution degassing device according to claim 1, characterized in that: The stirring shaft is also provided with stirring blades which spiral upward.

7. The spinning solution degassing device according to claim 1, characterized in that: One end of the four-way pipe is provided with a thermometer port, one end is provided with a liquid level control port, and the bottom end is provided with a discharge connection port.

8. The spinning solution degassing device according to claim 1, characterized in that: A grid net for filtering is arranged at the bottom of the inner wall of the feeding cylinder.

9. The spinning solution degassing device according to claim 1, characterized in that: A certain number of supports are also provided on the upper portion of the outer wall of the lower outer bladder along its circumferential direction.

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