A waste gas purification treatment device for acrylic fiber processing

Abstract

This invention relates to the field of waste gas purification technology, and provides a waste gas purification device for acrylonitrile fiber processing, including a purification tower and a mounting base. The mounting base is installed inside the purification tower. An air inlet pipe is installed on one side of the bottom of the purification tower, an air outlet is installed on the top of the purification tower, and a water outlet pipe is installed on the other side of the bottom of the purification tower. An auxiliary structure is provided inside the mounting base; the auxiliary structure includes a base material. This invention utilizes the flow of spray liquid to drive the fan blades, bevel gears, and cams in a coordinated manner, driving the base material to move up and down within the mounting base. Combined with the retraction and reset action of the return spring, the base material vibrates autonomously. This vibration can dislodge loose, sticky impurities and flocculent fibers from the pores at the bottom and surface of the base material, breaking up the continuous adhesive layer of sticky oil mist, reducing impurity adhesion, ensuring smooth penetration of the spray liquid and unobstructed passage of waste gas, avoiding a sharp drop in purification efficiency due to base material blockage, and eliminating the need for frequent shutdowns for cleaning.

Description

Technical Field

[0001] This invention relates to the field of waste gas purification technology, and in particular to a waste gas purification and treatment device for acrylic fiber processing. Background Technology

[0002] With the continuous increase in efforts to prevent and control air pollution, the control of industrial waste gas emissions has become a core focus of ecological and environmental protection. Among them, waste gas from the chemical fiber industry has become a key area for air pollution control due to its large emissions, complex composition, and prominent hazards. Acrylic fiber, as an important synthetic fiber, generates a large amount of process waste gas and fugitive waste gas throughout its production process. If it is discharged directly without effective treatment, it will not only damage the quality of the atmospheric environment, but also pose a serious threat to human health and the ecosystem. Therefore, a waste gas purification and treatment device for acrylic fiber processing is used when discharging waste gas from acrylic fiber processing. To this end, patent CN120838097B discloses a waste gas purification device, including a tower body. Inside the tower body, from top to bottom, are arranged a first packing layer and a second packing layer. Spraying mechanisms are correspondingly arranged above both the first and second packing layers. A water tank is connected to one side of the bottom of the tower body, an air inlet is opened on one side of the bottom of the tower body, an air outlet is provided at the top of the tower body, and an observation port is provided on the tower body. A rolling filter assembly is installed inside the water tank. This invention improves the utilization rate of the washing liquid and the waste gas washing effect: through the set water storage assembly, the washing liquid dripping from the first packing layer can be temporarily stored, allowing the waste gas to mix and contact with the washing liquid in the water storage assembly, increasing the number of waste gas washing cycles. Compared with the traditional mode of purification only through the packing layer, this improves the utilization rate of the washing liquid and the waste gas washing effect. The existing technical solutions described above have the following drawbacks: During operation, the water storage component temporarily stores a drop of washing liquid from the packing layer, allowing the waste gas to mix and contact with the washing liquid within the water storage component, increasing the number of waste gas washing cycles. However, when using a substrate in conjunction with a spray mechanism to purify waste gas, the substrate, as the core filter and washing carrier, has its bottom cleanliness directly determining the waste gas purification efficiency and equipment operational stability. The bottom of the substrate, due to its unique structural position, is the most difficult and easily overlooked critical part to clean. Simultaneously, viscous oil mist and flocculent fibers in the acrylonitrile waste gas easily adhere to the pores and surface of the substrate bottom. Impurities easily mix with the spray liquid to form viscous mud-like deposits. After long-term operation, the continuous accumulation of impurities at the bottom of the substrate will clog the substrate pores, hindering the penetration of the spray liquid and waste gas, leading to a sharp drop in purification efficiency, accelerated substrate wear, and affecting the filtration effect. Therefore, a waste gas purification treatment device for acrylonitrile processing is needed to solve these problems. Summary of the Invention

[0003] The purpose of this invention is to provide a waste gas purification device for acrylonitrile processing, which solves the defects of existing waste gas purification devices when using a base material in conjunction with a spray mechanism for purification. These defects are caused by the fact that the viscous oil mist and flocculent fibers in the acrylonitrile waste gas easily adhere to the bottom pores and surface of the base material, and the impurities easily mix with the spray liquid to form viscous mud-like deposits. After long-term operation, the impurities at the bottom of the base material continue to accumulate, which will block the pores of the base material, hinder the penetration of the spray liquid and the passage of waste gas, resulting in a sharp drop in purification efficiency, accelerated base material loss, and affecting the filtration effect.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a waste gas purification treatment device for acrylonitrile processing, comprising a purification tower and a mounting base; the mounting base is installed inside the purification tower, an air inlet pipe is installed on one side of the bottom end of the purification tower, an air outlet is installed at the top end of the purification tower, a water outlet pipe is installed on the other side of the bottom end of the purification tower, and an auxiliary structure is provided inside the mounting base. The auxiliary structure includes a base material, which is installed inside the mounting base. A guide groove is installed on the outer side of the base material, and a fixing ring plate is installed on the outer side of the bottom end of the base material. A return spring is installed on the top end of the fixing ring plate. A guide rod is installed inside the guide groove, and one end of the guide rod is fixed to one end inside the mounting base. A cam is installed at the bottom end of the base material, and a connecting shaft is installed at one end of the cam.

[0005] Preferably, an installation box is installed on the outside of the purification tower, a support frame is installed at the bottom of the installation box, and a bevel gear is installed inside the installation box, with one end of the bevel gear connected to one end of the connecting shaft.

[0006] Preferably, a spray pipe is installed at the top of the base material, a mounting bracket is installed at the top of the spray pipe, one side of the mounting bracket is installed inside the purification tower, a nozzle is provided at the bottom of the spray pipe, a connecting hose is installed at one end of the spray pipe, a fixing plate is installed at the top of the connecting hose, one side of the fixing plate is fixed to one side of the purification tower, a water inlet pipe is installed at one end of the connecting hose, a fan blade is installed inside the water inlet pipe, and the bottom end of the fan blade is connected to the top of the bevel gear.

[0007] Preferably, an installation shaft is installed inside the base material, and a limiting plate is installed on the outer side of the upper and lower ends of the installation shaft. A screw is installed at the top end of the installation shaft, an installation sleeve is installed at the top end of the screw, and a fixing frame is installed at the top end of the installation sleeve. One side of the fixing frame is fixed to one side inside the purification tower. Through grooves are opened at the upper and lower ends of the installation sleeve, and a screw sleeve is fixed inside the installation sleeve.

[0008] Preferably, fixing plates are installed on both sides of the bottom end of the mounting shaft, a telescopic spring is installed on the top of the fixing plate, and a brush is installed on the top of the telescopic spring.

[0009] Preferably, the two ends of the telescopic spring are fixed to the bottom end of the brush and the top end of the fixing plate, respectively, and the fixing plate and the brush form a telescopic structure.

[0010] Preferably, a guide post is installed at the top of the fixing plate, and the guide post penetrates the interior of the brush, forming a guiding connection between the brush and the guide post.

[0011] Preferably, the inner side of the screw sleeve is provided with an internal thread, and the outer side of the screw rod is provided with an external thread, and the screw sleeve and the screw rod form a threaded connection.

[0012] Preferably, the top end of the return spring is connected to the top end inside the mounting base, and the return spring and the mounting base form a telescopic structure.

[0013] Preferably, the inner diameter of the mounting base is larger than the outer diameter of the base material, and the base material is slidably connected up and down inside the mounting base.

[0014] The present invention provides a waste gas purification and treatment device for acrylic fiber processing, which has the following advantages: With the aid structure, the spray liquid flow drives the fan blades, bevel gears, and cams to move the base material up and down within the mounting base. Combined with the retraction and resetting action of the return spring, the base material vibrates autonomously. The vibration can shake off the loose sticky impurities and flocculent fibers at the bottom pores and surface of the base material, break up the continuous adhesive layer of sticky oil mist, reduce impurity adhesion, ensure smooth penetration of the spray liquid and unobstructed penetration of exhaust gas, avoid the sharp drop in purification efficiency caused by base material blockage, and eliminate the need for frequent shutdowns for cleaning. Furthermore, by deforming the connecting hose when the base material moves upward, the internal flow cross-section of the hose is reduced, which increases the spray velocity and impact force without changing the spray pressure. When the base material moves downward, the hose resets and the impact force returns to normal, forming a dynamic spray mode. This mode is adapted to the up-and-down vibration state of the base material, so that the atomized purification liquid has more sufficient contact with the surface and pores of the base material, further improving the capture efficiency of viscous impurities and optimizing the washing and purification effect. Furthermore, the screw, mounting shaft, fixing plate, and brush are driven to rotate synchronously through the threaded drive to clean the bottom surface of the base material, reducing the amount of impurities remaining at the bottom of the base material. With the adaptive adjustment of the telescopic spring, the position can be automatically adjusted when the brush wears, ensuring that the brush always fits the bottom of the base material. At the same time, the base material rotates to adjust the position, allowing the brush to clean different areas of the bottom of the base material, improving the cleaning effect of the bottom of the base material. Furthermore, precise guidance is achieved by inserting guide rods into guide grooves, which drive the base material to rotate synchronously and adjust its position. On the one hand, it can dynamically change the contact area between the base material and the exhaust gas and spray liquid, preventing the base material from being in contact with sticky impurities for a long time, which would lead to excessive pollution and accelerated wear. On the other hand, it can be combined with the rotation of the brush to achieve all-round cleaning and reduce base material loss. The vibration of the base material, the rotation of the brush, and the dynamic spraying are all achieved by relying on the flow power of the spray liquid and the movement of the base material itself, without the need for additional power components such as motors, thus reducing the cost of use. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural schematic diagram of the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of the present invention; Figure 3 This is a frontal cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 4 This is a frontal three-dimensional structural diagram of the auxiliary structure of the present invention; Figure 5 This is a frontal view of a partial three-dimensional structural diagram of the auxiliary structure of the present invention; Figure 6 This is a side view cross-sectional three-dimensional structural schematic diagram of the auxiliary structure of the present invention; Figure 7 This is a three-dimensional structural diagram of the auxiliary structure of the present invention, viewed from below. Figure 8 This is a three-dimensional structural schematic diagram of a partial cross-sectional view of the nozzle of the present invention. Figure 9 This is a three-dimensional structural diagram of the nozzle of the present invention viewed from below; Figure 10 This is a frontal exploded three-dimensional structural diagram of the base material of the present invention; Figure 11 This is a three-dimensional structural schematic diagram of a partial cross-section of the mounting shaft of the present invention. Figure 12 This is a front view exploded three-dimensional structural diagram of the mounting shaft of the present invention; Figure 13 This is a three-dimensional structural diagram of the installation of the present invention, viewed from below during an explosion.

[0016] The following are the annotations in the diagram: 1. Purification tower; 2. Air inlet pipe; 3. Air outlet; 4. Auxiliary structure; 401. Water inlet pipe; 402. Support frame; 403. Mounting box; 404. Spray pipe; 405. Base material; 406. Mounting bracket; 407. Fixing bracket; 408. Fixing plate; 409. Return spring; 4010. Guide groove; 4011. Fixing ring plate; 4012. Mounting sleeve; 4013. Connecting hose; 4014. Guide rod; 4015. Mounting shaft; 4016. Limiting plate; 4017. Cam; 4018. Connecting shaft; 4019. Fan blade; 4020. Bevel gear; 4021. Through groove; 4022. Screw sleeve; 4023. Screw; 4024. Brush; 4025. Fixing plate; 4026. Telescopic spring; 5. Water outlet pipe; 6. Mounting base. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-13 The present invention provides a waste gas purification treatment device for acrylic fiber processing, comprising a purification tower 1 and a mounting base 6; The purification tower 1 has an installation base 6 installed inside, an air inlet pipe 2 installed on one side of the bottom of the purification tower 1, an air outlet 3 installed on the top of the purification tower 1, a water outlet pipe 5 installed on the other side of the bottom of the purification tower 1, and an auxiliary structure 4 installed inside the installation base 6.

[0019] Reference Figures 1-13 As shown, the auxiliary structure 4 includes a base material 405, which is installed inside the mounting base 6. A guide groove 4010 is installed on the outer side of the base material 405. A fixing ring plate 4011 is installed on the outer side of the bottom end of the base material 405. A return spring 409 is installed on the top end of the fixing ring plate 4011. A guide rod 4014 is installed inside the guide groove 4010. One end of the guide rod 4014 is fixed to one end inside the mounting base 6. A cam 4017 is installed at the bottom end of the base material 405. A connecting shaft 4018 is installed at one end of the cam 4017. An installation box 403 is installed on the outside of the purification tower 1. A support frame 402 is installed at the bottom of the installation box 403. A bevel gear 4020 is installed inside the installation box 403. One end of the bevel gear 4020 is connected to one end of the connecting shaft 4018. A nozzle 404 is installed at the top of the base material 405, and a mounting bracket 406 is installed at the top of the nozzle 404. One side of the mounting bracket 406 is installed inside the purification tower 1. A nozzle is provided at the bottom of the nozzle 404. A connecting hose 4013 is installed at one end of the nozzle 404. A fixing plate 408 is installed at the top of the connecting hose 4013. One side of the fixing plate 408 is fixed to one side inside the purification tower 1. A water inlet pipe 401 is installed at one end of the connecting hose 4013. A fan blade 4019 is installed inside the water inlet pipe 401. The bottom end of the fan blade 4019 is connected to the top of the bevel gear 4020. An installation shaft 4015 is installed inside the base material 405. Limiting discs 4016 are installed on the outer sides of the upper and lower ends of the installation shaft 4015. A screw 4023 is installed at the top of the installation shaft 4015. An installation sleeve 4012 is installed at the top of the screw 4023. A fixing bracket 407 is installed at the top of the installation sleeve 4012. One side of the fixing bracket 407 is fixed to one side inside the purification tower 1. Through grooves 4021 are opened at the upper and lower ends of the installation sleeve 4012. A screw sleeve 4022 is fixed inside the installation sleeve 4012. Fixing plates 4025 are installed on both sides of the bottom end of the mounting shaft 4015. A telescopic spring 4026 is installed on the top of the fixing plate 4025. A brush 4024 is installed on the top of the telescopic spring 4026. The two ends of the telescopic spring 4026 are fixed to the bottom end of the brush 4024 and the top end of the fixing plate 4025 respectively, and the fixing plate 4025 and the brush 4024 form a telescopic structure. A guide post is installed at the top of the fixing plate 4025, and the guide post penetrates the interior of the brush 4024, forming a guide connection between the brush 4024 and the guide post. The inner side of the threaded sleeve 4022 is provided with an internal thread, and the outer side of the screw 4023 is provided with an external thread, forming a threaded connection between the threaded sleeve 4022 and the screw 4023; The top end of the return spring 409 is connected to the top end inside the mounting base 6, and the return spring 409 and the mounting base 6 form a telescopic structure. The inner diameter of the mounting base 6 is larger than the outer diameter of the base material 405, and the base material 405 is slidably connected up and down inside the mounting base 6.

[0020] When purifying the waste gas from acrylic fiber processing, the waste gas is discharged into the purification tower 1 through the inlet pipe 2. When the waste gas enters the purification tower 1, the water inlet pipe 401 is connected to a spray pipe to deliver the spray purification liquid into the water inlet pipe 401. Then, it is sprayed onto the surface of the base material 405 through the spray pipe 404, so that the waste gas, purification liquid, and base material 405 are in full contact. The gas penetrates the pores of the base material 405 from top to bottom. At this time, the atomized purification liquid has adhered to the inner wall and surface of the pores of the base material 405, so that the viscous oil mist, fine particles, and flocculent fibers in the waste gas are in full contact with the purification liquid. Through physical adsorption and interception, they are captured and encapsulated by the purification liquid to form dust-containing wastewater, which drips down after being purified by the base material 405. When the spray liquid passes through the inlet pipe 401, it drives the fan blade 4019 to rotate. The rotation of the fan blade 4019 drives the bevel gear 4020 to rotate. The rotation of the bevel gear 4020, in turn, drives the cam 4017 to rotate via the connecting shaft 4018. The rotation of the cam 4017 causes the base material 405 to move up and down inside the mounting base 6. When the base material 405 moves upward, it causes the return spring 409 to contract. When the base material 405 falls, the energy released by the contraction of the return spring 409 is released. The base material 405 is given a downward force, which, combined with the automatic gravity of the base material 405, causes the base material 405 to fall to the bottom of the mounting base 6, vibrating the base material 405. The vibration of the base material 405 can shake off the loose sticky impurities and flocculent fibers in the bottom pores and surface, and can also break the continuous adhesive layer of sticky oil mist on the bottom surface of the base material 405, reducing the adhesion of impurities in the pores, ensuring that the spray liquid can smoothly penetrate the pores of the base material 405 and the exhaust gas can pass through smoothly, avoiding the blockage of the base material 405 that would cause a sharp drop in purification efficiency. As the base material 405 moves upward, it simultaneously squeezes and deforms the connecting hose 4013. When the connecting hose 4013 deforms, its internal flow cross-section shrinks. Under the premise of constant spray pressure, the spray flow rate increases, thereby increasing the spray impact force. This enhances the contact effect between the atomized purification liquid and the surface and pores of the base material 405, making it easier to wash away and capture the sticky oil mist and fine particles on the bottom surface and pores of the base material 405. The deformation amplitude of the connecting hose 4013 changes synchronously with the up-and-down vibration of the base material 405. When the base material 405 moves upward and squeezes, the impact force increases. When it moves downward, the connecting hose 4013 resets and the impact force returns to normal, forming a dynamic spray mode and improving the spray effect. When the base material 405 moves up and down, it drives the screw 4023 at its top to insert into the screw sleeve 4022. Since the screw sleeve 4022 is fixed, when the screw 4023 contacts the screw sleeve 4022, it will rotate. When the screw 4023 rotates, it will drive the fixing plate 4025 at the bottom of the mounting shaft 4015 to rotate. During the rotation of the fixing plate 4025, it will drive the brush 4024 to rotate, thereby cleaning the surface of the bottom of the mounting base 6 and reducing the residue on the base material 405. The residual impurities on the end surface prevent clogging and further improve the purification effect of the base material 405. In addition, the position of the brush 4024 can be adaptively adjusted by the telescopic spring 4026. When the brush 4024 is worn, the brush 4024 will automatically adjust its position to fit against the bottom surface of the mounting base 6. The length of the screw 4023 is very short. When the base material 405 falls halfway, the screw 4023 has already fallen out of the inside of the screw sleeve 4022, which does not affect the vibration force of the base material 405 falling. When the base material 405 moves up and down, the guide rod 4014 is inserted into the guide groove 4010 to guide the base material 405, thereby causing the base material 405 to rotate during the up and down movement. This adjusts the position of the base material 405, thereby dynamically changing the contact position between the base material 405 and the waste gas and spray liquid. This prevents a certain part of the base material 405 from being in contact with sticky impurities for a long time, which would lead to excessive local pollution and accelerated wear. Furthermore, the adjustment of the position of the base material 405 also allows the brush 4024 to clean different positions at the bottom of the mounting base 6, further improving the purification effect of the base material 405. The purified waste gas is discharged through the air outlet 3, thus completing the purification treatment of the waste gas used in acrylonitrile processing.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste gas purification and treatment device for acrylic fiber processing, comprising a purification tower (1) and a mounting base (6); Its features are: The purification tower (1) is equipped with an installation base (6), an air inlet pipe (2) is installed on one side of the bottom end of the purification tower (1), an air outlet (3) is installed at the top end of the purification tower (1), a water outlet pipe (5) is installed on the other side of the bottom end of the purification tower (1), and an auxiliary structure (4) is provided inside the installation base (6). The auxiliary structure (4) includes a base material (405), which is installed inside the mounting base (6). A guide groove (4010) is installed on the outer side of the base material (405). A fixing ring plate (4011) is installed on the outer side of the bottom end of the base material (405). A return spring (409) is installed on the top end of the fixing ring plate (4011). A guide rod (4014) is installed inside the guide groove (4010). One end of the guide rod (4014) is fixed to one end inside the mounting base (6). A cam (4017) is installed at the bottom end of the base material (405). A connecting shaft (4018) is installed at one end of the cam (4017).

2. The waste gas purification and treatment device for acrylic fiber processing according to claim 1, characterized in that: An installation box (403) is installed on the outside of the purification tower (1). A support frame (402) is installed at the bottom of the installation box (403). A bevel gear (4020) is installed inside the installation box (403). One end of the bevel gear (4020) is connected to one end of the connecting shaft (4018).

3. The waste gas purification and treatment device for acrylic fiber processing according to claim 1, characterized in that: A nozzle (404) is installed at the top of the base material (405), and a mounting bracket (406) is installed at the top of the nozzle (404). One side of the mounting bracket (406) is installed inside the purification tower (1). A nozzle is provided at the bottom of the nozzle (404). A connecting hose (4013) is installed at one end of the nozzle (404). A fixing plate (408) is installed at the top of the connecting hose (4013). One side of the fixing plate (408) is fixed to one side inside the purification tower (1). A water inlet pipe (401) is installed at one end of the connecting hose (4013). A fan blade (4019) is installed inside the water inlet pipe (401). The bottom end of the fan blade (4019) is connected to the top of the bevel gear (4020).

4. The waste gas purification and treatment device for acrylic fiber processing according to claim 1, characterized in that: An installation shaft (4015) is installed inside the base material (405). A limiting plate (4016) is installed on the outer side of the upper and lower ends of the installation shaft (4015). A screw (4023) is installed at the top of the installation shaft (4015). An installation sleeve (4012) is installed at the top of the screw (4023). A fixing frame (407) is installed at the top of the installation sleeve (4012). One side of the fixing frame (407) is fixed to one side inside the purification tower (1). Through grooves (4021) are opened at the upper and lower ends of the installation sleeve (4012). A screw sleeve (4022) is fixed inside the installation sleeve (4012).

5. The waste gas purification and treatment device for acrylic fiber processing according to claim 4, characterized in that: Fixing plates (4025) are installed on both sides of the bottom end of the mounting shaft (4015), and a telescopic spring (4026) is installed on the top of the fixing plate (4025). A brush (4024) is installed on the top of the telescopic spring (4026).

6. The waste gas purification and treatment device for acrylic fiber processing according to claim 5, characterized in that: The two ends of the telescopic spring (4026) are respectively fixed to the bottom end of the brush (4024) and the top end of the fixing plate (4025), and the fixing plate (4025) and the brush (4024) form a telescopic structure.

7. The waste gas purification and treatment device for acrylic fiber processing according to claim 5, characterized in that: The top of the fixing plate (4025) is equipped with a guide post, and the guide post penetrates the interior of the brush (4024), and the brush (4024) and the guide post form a guide connection.

8. The waste gas purification and treatment device for acrylic fiber processing according to claim 4, characterized in that: The inner side of the threaded sleeve (4022) is provided with an internal thread, and the outer side of the screw (4023) is provided with an external thread, and the threaded sleeve (4022) and the screw (4023) form a threaded connection.

9. The waste gas purification and treatment device for acrylic fiber processing according to claim 1, characterized in that: The top end of the return spring (409) is connected to the top end inside the mounting base (6), and the return spring (409) and the mounting base (6) form a telescopic structure.

10. The waste gas purification and treatment device for acrylic fiber processing according to claim 1, characterized in that: The inner diameter of the mounting base (6) is larger than the outer diameter of the base material (405), and the base material (405) is slidably connected inside the mounting base (6).

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