A device for removing dust from the tail end of a nylon continuous production line

Abstract

The utility model discloses a kind of nylon continuous production line purging tail joint dust removal device, including dust collector body, the lower part of dust collector body is equipped with support leg;Dust collector body inside is equipped with cleaning fluid, dust collector body side is equipped with water inlet pipe, dust collector body lower part is equipped with blowdown pipe;Dust collector body side is equipped with air inlet pipe, air inlet pipe one end is connected with the pipeline of the side of reaction kettle through flange, the other end of air inlet pipe is introduced into the cleaning fluid inside of dust collector body, air inlet pipe is equipped with the heat exchange pipe of spiral winding, cooling medium is introduced into heat exchange pipe, and the flow direction of cooling medium is opposite with the flow direction of high-temperature steam.The utility model is through being equipped with the heat exchange pipe of spiral winding on air inlet pipe, cooling and temperature reduction are carried out to molten nylon at the tail end of purging, make it quickly precipitate as solid particles, these solid particles are further cooled and washed under the purging of high-temperature steam into the cleaning fluid in dust collector body, guarantee the effect of purging and dust removal.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal equipment, and specifically relates to a dust removal device for the tail end of a continuous nylon production line. Background Technology

[0002] In the production of nylon, the continuous nylon production line plays a crucial role. To ensure the smooth operation of the production process and the stability of product quality, a comprehensive and thorough cleaning of the reactor and pipelines must be carried out before starting up and after stopping the continuous nylon production line. High-temperature purging is one of the key operations in this process.

[0003] Currently, the purging method commonly used in the industry is quite traditional. The specific operation involves introducing high-temperature, high-pressure steam into one end of a pipeline. The high-temperature, high-pressure steam, with its powerful scouring force and thermal energy, can effectively clean the inner walls of the pipeline and the interior of the reactor, stripping and carrying away solid particles adhering to the pipe walls and inside the reactor. However, this purging method lacks a tail-end dust collection device, and the purged steam is directly discharged into the workshop environment from the other end of the pipeline. The direct discharge of steam carrying a large amount of solid particles during the purging process causes the air in the workshop to quickly become turbid.

[0004] From an environmental perspective, polluted air severely impacts the overall environmental quality of the workshop, reduces workplace comfort, and poses a potential threat to employees' health. Prolonged exposure to such an environment may lead to respiratory illnesses, eye discomfort, and other symptoms, increasing the risk of occupational diseases.

[0005] From a production perspective, airborne particulate matter may settle on the surface of production equipment, affecting its normal operation and precision. For example, particles may clog ventilation openings and heat dissipation holes, leading to poor heat dissipation and consequently impacting the equipment's performance and lifespan. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a dust removal device for the tail end of a continuous nylon production line. This device addresses the problem that the existing continuous nylon production line purging method lacks an effective tail end dust removal device, resulting in severe air pollution in the workshop, which affects employee health and the normal operation of equipment.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A dust removal device for the tail end of a continuous nylon production line includes a dust collector body, with support legs at the bottom and casters at the bottom of the support legs; the dust collector body contains cleaning fluid, and a water inlet pipe is provided on one side of the dust collector body for replenishing the cleaning fluid; a drain pipe is provided at the bottom of the dust collector body for discharging sediment; an air inlet pipe is provided on one side of the dust collector body, one end of which is connected to a pipe on one side of a reaction vessel via a flange, and the other end of which leads into the cleaning fluid inside the dust collector body; a spirally wound heat exchange tube is provided on the air inlet pipe, and a cooling medium is introduced into the heat exchange tube, with the flow direction of the cooling medium opposite to the flow direction of the high-temperature steam.

[0009] Furthermore, the support leg adopts a hollow tubular structure, and a lifting leg is sleeved inside the support leg. The lifting leg is provided with several adjustment holes, and a positioning hole is provided at the bottom of the support leg. A bolt is provided in the positioning hole for adjusting the height of the dust collector body.

[0010] Furthermore, the air inlet pipe is arranged at an angle, and the connection end between the air inlet pipe and the reactor pipe is higher than the connection end between the air inlet pipe and the reactor body.

[0011] Furthermore, the dust collector body is equipped with a lifting mechanism inside. The lifting mechanism includes a shell, and the two sides of the shell are connected to the inner wall of the dust collector body through several connecting frames. The bottom of the shell is provided with a water inlet hole, and the lower part of the shell is provided with a sealed hopper. The lower end of the air inlet pipe leads into the sealed hopper. The upper part of the shell is provided with a discharge pipe, and the discharge port of the discharge pipe is located outside the dust collector body. One end of the shell is provided with an active roller, and one side of the dust collector body is provided with a motor. The output shaft of the motor is connected to the active roller. The other end of the shell is provided with a driven roller. The active roller and the driven roller are connected by a transmission belt, and the transmission belt is provided with several lifting hoppers.

[0012] Furthermore, a gas collecting hood is provided on one side of the sealed hopper, and the lower part of the gas collecting hood is connected to the sealed hopper. The liquid level of the cleaning fluid is lower than the top height of the sealed hopper. An air supply pipe is provided on the outer shell, and one end of the air supply pipe is connected to the gas collecting hood. Several air distribution pipes are connected to the air supply pipe, and the lower part of the air distribution pipe is connected to the inside of the outer shell through several blow pipes. Both the transmission belt and the lifting bucket are provided with leakage holes.

[0013] Furthermore, an overflow pipe is provided on one side of the dust collector body. The height of the overflow pipe is lower than the upper end of the sealed hopper. When the height of the cleaning liquid added inside the dust collector body reaches the overflow pipe position, the excess cleaning liquid will automatically flow out from the overflow pipe.

[0014] The beneficial effects of this utility model are:

[0015] 1) This utility model uses a spirally wound heat exchange tube on the air inlet pipe to cool the molten nylon at the tail end of the purging process, causing it to quickly precipitate into solid particles. These solid particles are further cooled and washed in the cleaning liquid inside the dust collector body under the purging of high-temperature steam, thus ensuring the effectiveness of purging and dust removal.

[0016] 2) The air inlet pipe is arranged at an angle, with the connection end between the air inlet pipe and the reactor pipe higher than the connection end between the air inlet pipe and the reactor body, so that the solid particles precipitated in the air inlet pipe can quickly roll down into the dust collector body.

[0017] 3) By setting up a lifting mechanism inside the dust collector body, the solid particles that have been washed and cooled by the cleaning liquid fall onto the transmission belt inside the lifting mechanism. Under the action of the lifting bucket, they are lifted to the discharge pipe and discharged to the outside of the dust collector body. These recovered solid nylon particles can be used as raw materials to be reintroduced into the nylon production process, realizing the recycling of resources.

[0018] 4) A gas collection hood is installed at the top of the sealed hopper to collect high-temperature steam and use the high-temperature steam to dry the solid particles in the lifting hopper, thereby reducing the moisture content of the recovered particles.

[0019] 5) An overflow pipe is installed on one side of the dust collector body. When the cleaning liquid added inside the dust collector body reaches the overflow pipe position, the excess cleaning liquid will automatically flow out from the overflow pipe, which avoids the cleaning liquid from filling the gas collection hood and affecting the drying effect of solid particles. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one side of a dust removal device for the tail end of a nylon continuous production line according to this utility model.

[0021] Figure 2 This is a schematic diagram of the other side of a dust removal device for the tail end of a nylon continuous production line according to this utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of the dust collector.

[0023] Figure 4 This is a schematic diagram of the internal structure of the upgrade mechanism.

[0024] In the diagram, 1. Dust collector body; 2. Support legs; 3. Lifting legs; 4. Casters; 5. Water inlet pipe; 6. Sewage discharge pipe; 7. Overflow pipe; 8. Air inlet pipe; 9. Heat exchange pipe; 10. Motor; 11. Discharge pipe; 12. Outer shell; 13. Water inlet hole; 14. Connecting frame; 15. Sealed hopper; 16. Air collection hood; 17. Driving roller; 18. Driven roller; 19. Transmission belt; 20. Lifting bucket; 21. Air conveying pipe; 22. Air distribution pipe. Detailed Implementation

[0025] The following will be combined with the appendix Figures 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figure 1 As shown, a dust removal device for the tail end of a continuous nylon production line includes a dust collector body 1, with support legs 2 at the bottom and casters 4 at the bottom of the support legs 2; the dust collector body 1 contains cleaning fluid, and a water inlet pipe 5 is provided on one side of the dust collector body 1 for replenishing the cleaning fluid; a drain pipe 6 is provided at the bottom of the dust collector body 1 for discharging sediment; as shown Figure 3 As shown, an air inlet pipe 8 is provided on one side of the dust collector body 1. One end of the air inlet pipe 8 is connected to a pipe on one side of the reactor via a flange, and the other end of the air inlet pipe 8 is introduced into the cleaning liquid inside the dust collector body 1. A spirally wound heat exchange tube 9 is provided on the air inlet pipe 8. A cooling medium is introduced into the heat exchange tube 9, and the flow direction of the cooling medium is opposite to the flow direction of the high-temperature steam.

[0028] During the high-temperature purging process in the continuous nylon production line, high-temperature steam peels off the molten nylon material adhering to the pipe walls and inside the reactor, and blows it into the inlet pipe 8. This device, by installing spirally wound heat exchange tubes 9 on the inlet pipe 8, with the cooling medium flowing in the opposite direction to the high-temperature steam, can rapidly cool the molten nylon, causing it to quickly precipitate into solid particles. These solid particles enter the cleaning liquid inside the dust collector body 1 under the purging of high-temperature steam. The cleaning liquid further cools and washes away the nylon particles and other impurities, achieving deep purification. Compared with the traditional method of directly emitting steam, this device can significantly reduce the content of nylon particulate matter and other pollutants in the workshop air, effectively improving the air quality of the workshop.

[0029] like Figure 1 , Figure 2As shown, the support leg 2 adopts a hollow tubular structure, and a lifting leg 3 is sleeved inside the support leg 2. The lifting leg 3 is provided with several adjustment holes, and a positioning hole is provided at the bottom of the support leg 2. A bolt is provided in the positioning hole for adjusting the height of the dust collector body 1 to accommodate the connection of pipes and air inlet pipes 8 at different heights.

[0030] like Figure 1 , Figure 3 As shown, the air inlet pipe 8 is arranged at an angle, and the connection end of the air inlet pipe 8 with the reactor pipe is higher than the connection end of the air inlet pipe 8 with the reactor body, so that the solid particles precipitated in the air inlet pipe 8 can quickly roll down into the dust collector body 1.

[0031] like Figure 3 , Figure 4 As shown, the dust collector body 1 is equipped with a lifting mechanism inside. The lifting mechanism includes a housing 12. The two sides of the housing 12 are connected to the inner wall of the dust collector body 1 through several connecting frames 14. The bottom of the housing 12 is provided with a water inlet hole 13. The lower part of the housing 12 is provided with a sealed hopper 15. The lower end of the air inlet pipe 8 passes into the sealed hopper 15. The upper part of the housing 12 is provided with a discharge pipe 11. The discharge port of the discharge pipe 11 is located outside the dust collector body 1. One end of the housing 12 is provided with an active roller 17. One side of the dust collector body 1 is provided with a motor 10. The output shaft of the motor 10 is connected to the active roller 17. The other end of the housing 12 is provided with a driven roller 18. The active roller 17 and the driven roller 18 are connected by a transmission belt 19. Several lifting buckets 20 are provided on the transmission belt 19.

[0032] After being washed and cooled by the cleaning solution, the solid particles fall onto the transmission belt 19 inside the outer shell 12. Under the action of the lifting bucket 20, they are lifted to the discharge pipe 11 and discharged to the outside of the dust collector body 1. These recovered solid nylon particles can be used as raw materials to be reintroduced into the nylon production process, realizing the recycling of resources.

[0033] In addition, after the solid particles flow into the cleaning liquid, they fall to the lower part of the cleaning liquid under the thrust of the high-temperature steam and their own gravity, while the high-temperature steam flows upward and convects with the subsequently falling solid particles. On the one hand, this slows down the falling speed of the solid particles, ensuring the cooling and washing time of the solid particles; on the other hand, the steam washes the solid particles, further ensuring the washing effect of the solid particles, thereby ensuring the purity of the recovered solid particles.

[0034] like Figure 3 , Figure 4As shown, a gas collecting hood 16 is provided on one side of the sealed hopper 15. The lower part of the gas collecting hood 16 is connected to the sealed hopper 15. The liquid level of the cleaning fluid is lower than the top height of the sealed hopper 15. An air supply pipe 21 is provided on the outer shell 12. One end of the air supply pipe 21 is connected to the gas collecting hood 16. Several air distribution pipes 22 are connected to the air supply pipe 21. The lower part of the air distribution pipes 22 is connected to the inside of the outer shell 12 through several blow pipes. Both the transmission belt 19 and the lifting bucket 20 are provided with leakage holes.

[0035] High-temperature steam carries solid particles into the sealed hopper 15 through the air inlet pipe 8, then converges into the gas collection hood 16 and is blown onto the transmission belt 19 and the lifting hopper 20 through the air delivery pipe 21, the air distribution pipe 22 and the blow pipe, drying the solid particles in the lifting hopper 20 and reducing the moisture content of the recovered particles.

[0036] like Figure 3 As shown, an overflow pipe 7 is provided on one side of the dust collector body 1. The height of the overflow pipe 7 is lower than the upper end face of the sealed hopper 15. When the height of the cleaning liquid added inside the dust collector body 1 reaches the position of the overflow pipe 7, the excess cleaning liquid will automatically flow out from the overflow pipe 7, thus preventing the cleaning liquid from filling the gas collection hood 16 and affecting the drying effect of solid particles.

[0037] The above content is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the utility model, they should all fall within the protection scope of this utility model.

Claims

1. A dust removal device for the tail end of a continuous nylon production line, comprising a dust collector body, support legs at the lower part of the dust collector body, and casters at the lower part of the support legs; the dust collector body contains cleaning fluid, a water inlet pipe on one side of the dust collector body for replenishing the cleaning fluid, and a drain pipe at the lower part of the dust collector body for discharging sediment; an air inlet pipe on one side of the dust collector body, one end of which is connected to a pipe on one side of a reaction vessel via a flange, and the other end of which leads into the cleaning fluid inside the dust collector body, characterized in that... The air inlet pipe is equipped with a spirally wound heat exchange tube, and a cooling medium is introduced into the heat exchange tube, with the flow direction of the cooling medium opposite to the flow direction of the high-temperature steam.

2. The dust removal device for the tail end of a continuous nylon production line according to claim 1, characterized in that, The support leg adopts a hollow tubular structure, and a lifting leg is sleeved inside the support leg. The lifting leg is provided with several adjustment holes, and a positioning hole is provided at the bottom of the support leg. A bolt is provided in the positioning hole for adjusting the height of the dust collector body.

3. The dust removal device for the tail end of a continuous nylon production line according to claim 1, characterized in that, The air inlet pipe is arranged at an angle, and the connection end between the air inlet pipe and the reactor pipe is higher than the connection end between the air inlet pipe and the reactor body.

4. A dust removal device for the tail end of a continuous nylon production line according to any one of claims 1-3, characterized in that, The dust collector body is equipped with a lifting mechanism inside. The lifting mechanism includes an outer shell, which is connected to the inner wall of the dust collector body on both sides by several connecting frames. The bottom of the outer shell is provided with a water inlet hole, and the lower part of the outer shell is provided with a sealed hopper. The lower end of the air inlet pipe leads into the sealed hopper. The upper part of the outer shell is provided with a discharge pipe, and the discharge port of the discharge pipe is located outside the dust collector body. One end of the outer shell is provided with an active roller, and one side of the dust collector body is provided with a motor. The output shaft of the motor is connected to the active roller. The other end of the outer shell is provided with a driven roller. The active roller and the driven roller are connected by a transmission belt, and several lifting buckets are provided on the transmission belt.

5. The dust removal device for the tail end of a continuous nylon production line according to claim 4, characterized in that, A gas collecting hood is provided on one side of the sealed hopper, and the lower part of the gas collecting hood is connected to the sealed hopper. The liquid level of the cleaning fluid is lower than the top height of the sealed hopper. An air supply pipe is provided on the outer shell, and one end of the air supply pipe is connected to the gas collecting hood. Several air distribution pipes are connected to the air supply pipe, and the lower part of the air distribution pipe is connected to the inside of the outer shell through several spray pipes. Both the transmission belt and the lifting bucket are provided with leakage holes.

6. The dust removal device for the tail end of a continuous nylon production line according to claim 5, characterized in that, An overflow pipe is provided on one side of the dust collector body. The height of the overflow pipe is lower than the upper end of the sealed hopper. When the height of the cleaning liquid added inside the dust collector body reaches the overflow pipe position, the excess cleaning liquid will automatically flow out from the overflow pipe.

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