A deoxidizing tower for car film production with convenient replacement of filler

Abstract

The present application relates to a kind of car film production deoxidizing tower facilitating replacement of packing, it includes tower body and the vent opening being arranged at the top of tower body, two horizontally arranged hole baffles are fixedly connected in the inside of tower body, the side edge of two hole baffles is fixedly connected at different height of the inner wall of deoxidizing tower, the hole baffle being arranged in the upper of two hole baffles is upper hole baffle, upper packing layer is arranged above upper hole baffle, the hole baffle being arranged in the lower is lower hole baffle, lower packing layer is arranged between lower hole baffle and upper hole baffle, each packing layer is composed of multiple packing blocks of different materials, upper material conveying port is opened in the height of upper hole baffle of deoxidizing tower side wall, upper hole baffle is set in the height of middle part of upper material conveying port, lifting passage is opened in upper hole baffle.The present application has the effect of simplifying the replacement process of deoxidizing packing layer in deoxidizing tower, reducing the regular maintenance cost of deoxidizing tower.

Description

TECHNICAL FIELD

[0001] The application relates to the field of deoxygenation equipment for polyvinyl chloride production, in particular to a deoxygenation tower for car film production, which facilitates replacement of fillers. BACKGROUND

[0002] Car film is a plastic film attached to the surface of a car to protect the car, prevent the car surface from being scratched, worn, corroded, and damaged by ultraviolet radiation, and improve the appearance of the car. There are many types of car film materials on the market, such as polyurethane (PU), polyurethane elastomer (TPU), polypropylene (PP), and polyvinyl chloride (PVC). Car films made of different materials have different performance focuses. Among them, car films made of polyvinyl chloride are very popular, mainly because polyvinyl chloride car films have good weather resistance and corrosion resistance, can resist ultraviolet radiation, acid rain, pollution, and other external factors and chemical substances for a long time, and have good wear resistance to protect the car body from scratches and other damage.

[0003] The production process of polyvinyl chloride car film is relatively simple. After the polyvinyl chloride solid particles are melted, they are extruded into a film by an extruder, and then cut according to the shape of the corresponding part of the car body. The difficulty lies in the preparation of polyvinyl chloride solid particles. There are many methods for preparing polyvinyl chloride solid particles, among which the method with the highest conversion rate is to add chloroethylene raw material and chlorine gas to a high-temperature and high-pressure reaction furnace, use iron chloride as a catalyst to react to obtain chloroethylene monomer (VCM), and then add the prepared chloroethylene monomer to a polymerization kettle to convert the chloroethylene monomer into a chloroethylene polymer, i.e. polyvinyl chloride, through polymerization. The polyvinyl chloride produced by polymerization is in the form of solid particles and can be directly used to prepare polyvinyl chloride products through various processes.

[0004] The polymerization reaction must be carried out in a low-oxygen environment. Chloroethylene monomer is prone to oxidation reaction with oxygen during polymerization, which leads to the breaking of molecular chains and changes in color, thus making the produced polyvinyl chloride yellow in texture and greatly reducing its appearance quality. In order to keep the oxygen content in the polymerization kettle within a relatively low range, the polymerization kettle is usually connected to a deoxygenation tower.

[0005] The deoxygenation tower absorbs oxygen by setting deoxygenation filler blocks. The deoxygenation tower is internally provided with a filler layer, and the filler layer is filled with filler blocks composed of various material particles, such as iron filings, nickel filings, aluminum oxide, and activated carbon. During the deoxygenation process, the reaction rate of the filler is controlled by controlling the operating temperature and gas flow in the deoxygenation tower, so as to more efficiently absorb oxygen. The filler has a saturation capacity for oxygen absorption, so the filler should be replaced regularly.

[0006] At present, the replacement of the packing in the deoxidizing tower is more troublesome, first, the workers enter the bottom of the deoxidizing tower from the entrance, build a simple platform inside the deoxidizing tower, and use cutting and other cutting equipment to separate the cutout of the bottom grid of the packing layer, the body is inserted into the cutout and the new packing block is replaced and fixed in turn, after the replacement is completed, the bottom grid of the packing block is welded to restore the original state. The above-mentioned manual replacement of the packing process, together with the steps of cleaning, drying and cooling the inside of the deoxidizing tower, often takes one day. For the related technology in the above, the inventor believes that the inside of the deoxidizing tower can be improved in structure, the replacement process of the deoxidizing layer packing is simplified without affecting the deoxidizing effect of the packing layer, so as to reduce the regular maintenance cost of the deoxidizing tower. SUMMARY

[0007] In order to simplify the replacement process of the deoxidizing packing layer in the deoxidizing tower and reduce the regular maintenance cost of the deoxidizing tower, the present application provides a deoxidizing tower for car film production which is convenient for replacing packing.

[0008] The deoxidizing tower for car film production which is convenient for replacing packing provided by the present application adopts the following technical scheme:

[0009] The deoxidizing tower for car film production which is convenient for replacing packing comprises a tower body and a ventilation opening arranged at the top end of the tower body, a drainage opening is arranged at the bottom end of the side wall of the tower body, two horizontally arranged fine hole partitions are fixedly connected inside the tower body, the side edges of the two fine hole partitions are fixedly connected to the inner side walls of the tower body at different heights, the upper fine hole partition is arranged above the lower fine hole partition, an upper packing layer is arranged above the upper fine hole partition, the lower fine hole partition is arranged below the upper fine hole partition, a lower packing layer is arranged between the upper fine hole partition and the lower fine hole partition, each packing layer is composed of a plurality of packing blocks made of different materials, an upper material conveying opening is arranged at the height of the upper fine hole partition in the side wall of the tower body, the height of the middle part of the upper fine hole partition corresponds to the height of the upper material conveying opening, and a lifting channel is arranged on the upper fine hole partition.

[0010] The technical scheme is adopted, the lifting channel is added on the upper fine hole partition plate and the lower fine hole partition plate of the deoxidizing tower as the support plate of the packing layer, the worker can enter the lower packing layer from the upper packing layer along the lifting channel when cleaning and replacing the internal packing layer, and the packing blocks of the upper packing layer and the lower packing layer are cleaned and replaced in turn, instead of the traditional manual construction of the support platform and the gas cutting of the bottom layer grid, and the worker replaces the packing block by the way of the human body exploring into the cutting gap, so that the process of replacing the deoxidizing module is simplified; when designing, the upper material conveying port and the drainage port should be set to a size that can be passed by 1-1.5 workers, so as to provide a channel for the worker to carry the packing block in and out; the process of the worker replacing the packing block is briefly described as follows: the worker opens the ventilation port before entering the deoxidizing tower, and then opens the drainage port to drain the liquid in the deoxidizing tower, controls the operation of the fan to air cool and dry the inside of the deoxidizing tower, until the water vapor in the deoxidizing tower is completely removed, to ensure the safety of the worker when entering the inside of the deoxidizing tower; when air cooling and drying the inside of the deoxidizing tower, the worker carries the external support outside the deoxidizing tower to enter the inside of the deoxidizing tower from the upper material conveying port; after the air cooling and drying process is completed, the worker opens the upper material conveying port and crouches to enter the upper material conveying port, and cleans the packing blocks of the upper packing layer near the upper material conveying port, the cleaned packing blocks are conveyed out from the upper material conveying port, and the worker gradually enters the inside of the upper packing layer until the cleaning of the upper packing layer is completed; in the cleaning process, the packing blocks that play a filtering role have small density and light quality, so the impact caused by the falling phenomenon is small and has no effect on the worker; after the worker completes the cleaning of the upper packing layer, the remaining workers send new packing blocks into the upper packing layer through the upper material conveying port, until the upper packing layer is filled to the vicinity of the lifting channel, the worker stops cleaning the upper packing layer and enters the lower packing layer through the lifting channel, and starts to clean the packing blocks in the lower packing layer; after the worker completes the cleaning of the packing blocks in the lower packing layer, the remaining workers continue to convey the packing blocks to the lower packing layer, and the height at which the worker is located gradually increases; when the worker returns to the vicinity of the upper material conveying port, the worker closes the lifting channel and leaves the inside of the deoxidizing tower from the upper material conveying port, and fills the remaining new packing blocks of the upper packing layer that are not filled, and the worker returns to the ground along the external support; this scheme does not need to spend extra time to carry the support in the inside of the deoxidizing tower after drying, and can realize the replacement of double-layer packing layers, but it should be noted that this scheme is limited to the deoxidizing tower with double-layer or single-layer packing layers, and if it involves the cleaning of the middle layer of the multi-layer deoxidizing tower, it will be more troublesome and will bring the opposite effect.

[0011] Optionally, the upper packing layer and the lower packing layer each include a plurality of packing blocks of the same height, a plurality of packing blocks distributed in the same horizontal plane form a layer, the upper packing layer and the lower packing layer include a plurality of layers of packing blocks, and the packing blocks of adjacent layers are staggered.

[0012] By adopting the technical scheme, the filler is divided into a plurality of stacked filler blocks, each layer of filler blocks is filled with filler blocks of multiple different materials, each layer of filler blocks has filtering effect on multiple air molecules except oxygen, and the filtering effect is enhanced; since each layer of filler blocks is filled with multiple filler blocks, gaps are inevitably formed between the filler blocks, staggered distribution can avoid gas and liquid from leaking from the gaps, thereby increasing the oxygen content in the gas or liquid and weakening the filtering effect.

[0013] Optionally, the upper fine hole partition plate and the lower fine hole partition plate are each composed of two parallel arranged mesh plates and a plurality of support rods arranged between the two mesh plates, the plurality of support rods are vertically arranged and the two ends of each support rod are fixedly connected with the two mesh plates, a buffer cavity is formed between the two mesh plates, the lifting channel includes door holes arranged at the same position of the two mesh plates, and the upper fine hole partition plate is slidably connected with a transverse door plate corresponding to the door holes.

[0014] By adopting the technical scheme, the two mesh plates and the plurality of support rods cooperatively form a fine hole partition plate which has a strong physical structure compared with a traditional single metal plate, especially when the support rods and the support holes are regularly and alternately distributed, so that the two fine hole partition plates have strong load bearing performance and strong spatial support strength; for the case that liquid enters the deoxidizing tower, the buffer cavity is formed between the two mesh plates, the liquid is temporarily stored in the buffer cavity at a reduced speed due to the filtering effect of the lower filler layer, and the liquid is prevented from being directly lifted or lowered, thereby increasing the filtering time of the liquid and improving the filtering effect of the liquid.

[0015] Optionally, the transverse door plate is arranged between the two mesh plates, the height of the transverse door plate is matched with the height of the buffer cavity, the transverse door plate is slidably connected with the buffer cavity, mesh holes are arranged on the transverse door plate, the mesh holes on the transverse door plate and the mesh holes on the adjacent mesh plate have the same distribution state, and a fixing assembly is arranged on the inner side wall of the tower body corresponding to the transverse door plate.

[0016] By adopting the technical scheme, the transverse door plate serves as part of the upper fine hole partition plate and the lower fine hole partition plate under normal working of the deoxidizing tower, the mesh holes distributed on the transverse door plate also have filtering effect, the mesh holes on the transverse door plate and the mesh holes on the fine hole partition plate where the transverse door plate is located have the same distribution state to avoid uneven flow rate of the liquid passing through the transverse door plate, the liquid is accumulated at the transverse door plate or accelerated to pass through the transverse door plate, and then turbulence occurs to change the vertical flow direction of the liquid and adsorb the liquid in the gaps between the filler blocks.

[0017] Optionally, the fixing assembly includes fixing blocks arranged on the mesh plate corresponding to the transverse door plate, a vertically arranged fixing rod is inserted into each fixing block corresponding to the sliding plate, the diameter of the fixing rod is matched with the diameter of the mesh hole on the transverse door plate, and the fixing rod is inserted into the mesh hole.

[0018] Through adoption of the above technical scheme, the fixed rod is inserted into the ring sleeve and then pushed into the buffer cavity, so as to open the lifting channel.

[0019] Optionally, the inner sidewall of the tower body is provided with a plurality of anti-falling support rods corresponding to the bottom side of the lower fine hole partition plate, one end of the plurality of anti-falling support rods is fixedly connected to the inner sidewall of the tower body, the other end of the plurality of anti-falling support rods is inclined upward, the other end of the plurality of anti-falling support rods is fixedly connected to the bottom end of the lower fine hole partition plate, and the plurality of anti-falling support rods are distributed in the same horizontal plane of the inner sidewall of the tower body.

[0020] Through adoption of the above technical scheme, the lower fine hole partition plate needs to bear the weight of the upper and lower filler layers, and the weight of the two fine hole partition plates, and additionally consider the weight range that can bear the work of two workers at the same time, so a stable support needs to be provided below the lower fine hole partition plate, that is, the plurality of anti-falling support rods distributed circumferentially around the lower fine hole partition plate.

[0021] Optionally, the sidewall of the tower body is provided with a lower material conveying port corresponding to the lower fine hole partition plate, the bottom wall of the lower material conveying port is in the same horizontal plane as the top side of the lower fine hole partition plate, and the diameter of the lower material conveying port is smaller than the diameter of the upper material conveying port.

[0022] Through adoption of the above technical scheme, the design of the lower material conveying port is to facilitate the worker to clean the lower filler layer, the size of the lower material conveying port is relatively small, and it is only used to improve the channel for conveying the filler blocks, and does not need to be passed through by the worker, the part where the lower material conveying port is located bears a larger pressure than the part where the upper material conveying port is located, and a relatively larger sealing force is required, and the smaller size can save the sealing cost to a certain extent; when the worker cleans the lower filler layer, the height of the worker gradually decreases as the lower filler layer is cleaned, and it is more troublesome for the worker to directly convey the filler blocks out of the upper material conveying port, so when the worker is far away from the upper material conveying port, the worker opens the lower material conveying port to convey the filler blocks out of the lower material conveying port, and the worker outside the deoxidizing tower can directly convey new filler blocks into the deoxidizing tower from the lower material conveying port.

[0023] Optionally, the inner sidewall of the tower body is provided with a plurality of climbing ladders below the lower fine hole partition plate, and the climbing ladders are distributed at equal intervals in the vertical direction.

[0024] Through adoption of the above technical scheme, the climbing ladders and the drainage port provide a channel for the worker to ascend from the bottom of the deoxidizing tower to the vicinity of the lower fine hole partition plate, and after the worker replaces the filler, the worker should check the stability and erosion of the anti-falling support rods and the lower fine hole partition plate, and reinforce or replace them in time. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1It is the overall structure schematic diagram of the embodiment of the application.

[0026] Figure 2 It is the structure schematic diagram for highlighting the deoxidizing tower.

[0027] Figure 3 It is the sectional view for highlighting the inside of the deoxidizing tower.

[0028] Figure 4 It is the structure schematic diagram for highlighting the inside of the deoxidizing tower.

[0029] Figure 5 It is the structure schematic diagram for highlighting the fine hole partition plate.

[0030] Explanation of reference numerals: 1, tower body; 11, main pipeline; 12, safety valve; 13, ventilation opening; 14, drainage opening; 15, upper fine hole partition plate; 151, mesh plate; 152, mesh hole; 153, buffer cavity; 154, support rod; 155, transverse door plate; 156, fixed block; 157, fixed rod; 158, door opening; 16, lower fine hole partition plate; 17, upper filler layer; 171, filler block; 172, top layer mesh plate; 18, lower filler layer; 19, upper material conveying opening; 191, lower material conveying opening; 2, anti-falling support rod; 21, climbing ladder; 3, polymerization kettle. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying Figures 1-5 The application is further described in detail.

[0032] The embodiment of the application discloses a car film production deoxidizing tower facilitating replacement of fillers. Referring to Figure 1 A car film production deoxidizing tower facilitating replacement of fillers comprises a tower body 1 arranged vertically and a main pipeline 11 fixed below the tower body 1, the end, away from the tower body 1, of the main pipeline 11 is fixed with a polymerization kettle 3, and the main pipeline 11 communicates the deoxidizing tower with the polymerization kettle 3. The deoxidizing tower is arranged on a polyvinyl chloride production line before the polymerization kettle 3, and the deoxidizing process of the deoxidizing tower is performed before vinyl chloride monomers are conveyed into the polymerization kettle 3, so that the polymerization reaction is performed in a low-oxygen environment, and the raw material after deoxidization is conveyed to the polymerization kettle 3 through the main pipeline 11.

[0033] Referring to Figure 1 and Figure 2The middle part of the top cover of the tower body 1 is provided with a safety valve 12, and a ventilation opening 13 is formed on one side of the safety valve 12 of the top cover of the tower body 1, and the ventilation opening 13 is connected with a fan; a drainage opening 14 is formed at the bottom end of the side wall of the tower body 1, and the part of the side wall of the tower body 1 corresponding to the drainage opening 14 extends transversely to the outside of the tower body 1 by a section of drainage pipeline. The size of the drainage opening 14 is larger than the size of the human body, so as to provide a passage for workers to enter the inside of the deoxidizing tower. Before the workers enter the inside of the deoxidizing tower, the drainage opening 14 and the ventilation opening 13 are opened, and the fan is turned on, so that the liquid and gas in the inside of the deoxidizing tower are discharged, and the safety of the workers entering the inside of the deoxidizing tower is ensured. In order to facilitate observation and simplify the complexity of the drawing, the general structure, external connection equipment and indistinguishable technical features of the deoxidizing tower, such as a vacuum pump, a vacuum valve, a diffuser, an exhaust pipeline and the like, are not shown in the figure, and the actual application cannot be ignored.

[0034] With reference to Figure 3 With reference to Figure 4The tower body 1 is internally fixed with an upper fine hole partition plate 15 and a lower fine hole partition plate 16. The upper fine hole partition plate 15 and the lower fine hole partition plate 16 are horizontally arranged. The edges of the upper fine hole partition plate 15 and the lower fine hole partition plate 16 are fixed at different heights of the inner side wall of the tower body 1. The height of the upper fine hole partition plate 15 is higher than that of the lower fine hole partition plate 16. An upper packing layer 17 is arranged above the upper fine hole partition plate 15. A lower packing layer 18 is arranged between the upper fine hole partition plate 15 and the lower fine hole partition plate 16. The upper packing layer 17 and the lower packing layer 18 are each composed of multiple layers of packing blocks 171. Each layer of packing blocks 171 is composed of multiple packing blocks 171 made of different materials. The packing blocks 171 between adjacent layers are staggered and distributed. A top layer of mesh plates 172 is arranged above the upper packing layer 17. An upper material conveying port 19 is arranged in the side wall of the tower body 1 corresponding to the upper packing layer 17 and the lower packing layer 18. The upper material conveying port 19 is arranged such that the edge of the upper fine hole partition plate 15 is located at the middle position of the upper material conveying port 19. The size of the upper material conveying port 19 is the same as that of the drainage port 14. A lower material conveying port 191 is arranged in the side wall of the tower body 1 below the upper material conveying port 19. The lower material conveying port 191 is arranged corresponding to the lower fine hole partition plate 16. The top side of the lower fine hole partition plate 16 is flush with the lower side of the side wall of the lower material conveying port 191. The part of the side wall of the tower body 1 corresponding to the upper material conveying port 19 and the lower material conveying port 191 is extended in a direction away from the side wall of the tower body 1. Multiple anti-falling support rods 2 are circumferentially distributed below the lower fine hole partition plate 16 in the inner side wall of the tower body 1. One end of each of the multiple anti-falling support rods 2 is fixed to the inner side wall of the tower body 1. The other end of each of the multiple anti-falling support rods 2 is arranged obliquely away from the tower body 1. The other end of each of the multiple anti-falling support rods 2 is fixed to the bottom side of the lower fine hole partition plate 16. Compared with the traditional deoxidizing tower, the embodiment adopts a double-layer deoxidizing structure. Liquid raw materials and gas raw materials entering the deoxidizing tower are sequentially filtered and deoxidized by the upper packing layer 17 and the lower packing layer 18, thereby enhancing the deoxidizing effect and reducing the oxygen content of the lower layer of the deoxidizing tower. The upper fine hole partition plate 15 is the main structure supporting the upper packing layer 17. The lower fine hole partition plate 16 is the main structure supporting the upper packing layer 17 and the lower packing layer 18. The pressure bearing performance is a point that must be considered. The anti-falling support rods 2 provide vertical edge support force by means of a triangular structure, thereby supporting the lower fine hole partition plate 16 and improving the pressure bearing capacity of the lower fine hole partition plate 16. In the embodiment, the number of anti-falling support rods 2 is seven. However, the number of anti-falling support rods 2 should be determined according to the number of layers of packing layers and the internal size of the deoxidizing tower. Moreover, the anti-falling support rods 2 should not interfere with the lifting channel, so as to avoid interference of the anti-falling support rods 2 with the workers entering and exiting the lifting channel.

[0035] Referring to Figure 5The upper fine hole partition plate 15 and the lower fine hole partition plate 16 are both composed of two parallel mesh plates 151 and a plurality of support rods 154 arranged between the two mesh plates 151, the plurality of support rods 154 are vertically arranged, the top end and the bottom end of each support rod 154 are fixedly connected to the two mesh plates 151 respectively, and the buffer cavities 153 are formed between the two mesh plates 151; a plurality of mesh holes 152 are formed in each mesh plate 151 and penetrate through the mesh plate 151; door holes 158 are formed in the same part between the two mesh plates 151 of the upper fine hole partition plate 15 and the lower fine hole partition plate 16, the door holes 158 are formed at the edge of each mesh plate 151 and penetrate through each mesh plate 151, and the door holes 158 between the adjacent two mesh plates 151 form the lifting channel; a transverse door plate 155 is slidably connected to the part corresponding to the door hole 158 between the adjacent two mesh plates 151, a plurality of mesh holes 152 are formed in the transverse door plate 155 and penetrate through the transverse door plate 155, and the mesh holes 152 on the transverse door plate 155 are distributed in the same distribution state as the mesh holes 152 on the mesh plate 151; the mesh plate 151 close to the upper filler layer 17 in the upper fine hole partition plate 15 is fixedly connected with a fixed block 156 on both sides of the door hole 158, the end of the two fixed blocks 156 away from the upper fine hole partition plate 15 extends towards the door hole 158, the side of the two fixed blocks 156 close to the door hole 158 is located above the transverse door plate 155, and the end of the two fixed blocks 156 extending above the transverse door plate 155 is inserted with a fixed rod 157 arranged vertically, the two fixed rods 157 are arranged on the transverse door plate 155 and are located directly above the two mesh holes 152 close to the two sides of the transverse door plate 155 respectively, and the fixed rod 157 is inserted with the two mesh holes 152. The two door holes 158 serve as the lifting channel, so that the staff can easily enter the lower filler layer 18 from the upper filler layer 17, realize the sequential cleaning and replacement of the filler blocks 171 in the two filler layers, the transverse door plate 155 serves as a sliding part and closes the lifting channel in the normal working state of the deoxidizing tower, and serves as the basic framework of supporting the filler layer, when the staff clean, the fixed rod 157 is pulled out to cancel the fixation of the transverse door plate 155, and then the transverse door plate 155 is slid towards the accommodating cavity.

[0036] Back Figure 3 With Figure 4 A plurality of groups of climbing ladders 21 are fixedly connected to the inner side wall of the tower body 1 below the lower fine hole partition plate 16 and are vertically arranged, and the plurality of groups of climbing ladders 21 are distributed in the circumferential direction of the inner side wall of the tower body 1. The anti-falling support rod 2 and the climbing ladder 21 belong to the auxiliary structure of the double filler layer and play the role of support and maintenance. Considering the corrosion of chemical molecules in the deoxidizing tower and the erosion of water vapor in the humid environment, the anti-falling support rod 2 is necessary, and as the service life gradually shortens, the worker needs to check the connection between the anti-falling support rod 2 and the lower fine hole partition plate 16 through the climbing ladder 21 and needs to reinforce when necessary.

[0037] The structure shown in the figure is only related to the replacement of the deoxidizing tower filler, and other internal structures of the deoxidizing tower that are not related to solving the technical problems proposed by the present solution are not shown in the figure.

[0038] The implementation principle of the deoxidizing tower for car film production with convenient filler replacement according to an embodiment of the present application is as follows: the deoxidizing performance of the deoxidizing filler block 171 is in a saturated state, or the deoxidizing tower is filled with corrosive gas and chemical corrosive material vapor, causing the deoxidizing tower to be corroded, resulting in a decrease in the deoxidizing performance of the filler block 171. In this case, the filler layer needs to be replaced. The construction steps of the deoxidizing tower are described in detail below.

[0039] First, the worker cuts off the incoming hot desalted water and cold desalted water of the deoxidizing tower, cuts off the continuous gas supply of the gas inlet pipe, closes the vacuum valve and opens the drain port 14 to remove the air inside the deoxidizing tower, opens the ventilation port 13 to connect the deoxidizing tower with the outside world, and then opens the fan of the ventilation port 13 to air-cool and dry the inside of the deoxidizing tower. When the inside of the deoxidizing tower is dry, the worker can safely enter the inside of the deoxidizing tower. When the deoxidizing tower is drying, the worker pre-erects a simple platform that rises to the upper material inlet port 19 and the drain port 14, and erects a material conveying channel near the simple platform of the upper material inlet port 19.

[0040] The worker opens the upper material inlet port 19 and squats in, cleans the filler block 171 near the upper material inlet port 19 inside the deoxidizing tower, and manually carries and cleans the filler block 171 with light weight. Other workers on the platform at the upper material inlet port 19 assist from the outside, and the filler block 171 cleaned is conveyed out. Due to the interlaced distribution of the filler block 171, when the worker carries the lower filler block 171, the upper filler block 171 will automatically fall, saving the vertical carrying force. The worker gradually enters the deoxidizing tower to clean the upper filler layer 17, and after cleaning is completed, the worker outside the deoxidizing tower conveys new filler blocks 171 into the deoxidizing tower, and the worker inside the deoxidizing tower resets the new filler blocks 171 and fixes them. Before the upper filler layer 17 is cleaned, the worker removes the fixing rod 157 and slides the horizontal door plate 155 towards the buffer cavity 153, opens the lifting channel, and the worker cleans the lower filler layer 18 through the lifting channel. At this time, the upper filler layer 17 only has the door hole 158 near which is not filled with new filler blocks 171.

[0041] As the workers clean the lower packing layer 18, the height of the workers gradually decreases, and it is very inconvenient to continue to transport the material from the upper material port 19. The workers clean the packing block 171 on one side of the lower material port 191 in advance, and an external worker opens the lower material port 191 in advance. The packing block 171 is pushed out or transported out from the lower material port 191, which saves time and effort. If necessary, the workers can open the lifting passage on the lower fine hole partition 16 to make the lower material port 191 transport multiple packing blocks 171 at a time; the external worker transports new packing blocks 171 from the lower material port 191 to the inside of the deoxidizing tower, and the workers inside the deoxidizing tower reset the new packing blocks 171 in the lower packing layer 18 until the filling is completed, and then the workers return to the upper packing layer 17 to continue to fill the packing blocks 171 near the upper packing layer 17.

[0042] After the filling is completed, the workers need to enter the drain port 14 through the simple platform built at the drain port 14, and check the connection of each anti-disengagement support rod 2 with the inner wall of the deoxidizing tower and the lower fine hole partition 16 in turn along the climbing ladder 21. After the inspection is completed, the workers exit the deoxidizing tower from the drain port 14, disassemble the platform, and restore the work of the deoxidizing tower.

[0043] The present application saves the time of cutting and supporting the bracket under the lower fine hole partition 16 by using the supporting structure of the deoxidizing tower to support the packing layer, simplifies the replacement process of the deoxidizing tower packing block 171, reduces the labor intensity of the workers replacing the deoxidizing tower packing, and improves the replacement efficiency.

[0044] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A deoxidation tower for automotive coating film production with easily replaceable packing material, comprising a tower body (1) and a vent (13) disposed at the top of the tower body (1), and a drain outlet (14) provided at the bottom of the side wall of the tower body (1), characterized in that: The tower body (1) is internally fixed with two horizontally arranged fine-hole baffles. The side edges of the two fine-hole baffles are fixed at different heights on the inner sidewall of the tower body (1). The fine-hole baffle set above the two fine-hole baffles is called the upper fine-hole baffle (15). An upper packing layer (17) is set above the upper fine-hole baffle (15). The fine-hole baffle set below the upper fine-hole baffle is called the lower fine-hole baffle (16). A lower packing layer (18) is set between the lower fine-hole baffle (16) and the upper fine-hole baffle (15). Each packing layer is composed of multiple packing blocks (171) of different materials. The tower body (1) has an upper material inlet (19) at the height of the upper perforated partition (15) on its side wall, and the upper perforated partition (15) is set at the height of the middle part of the upper material inlet (19). The upper perforated partition (15) is provided with a lifting channel; The upper filling layer (17) and the lower filling layer (18) each include multiple filling blocks (171) of the same height. Multiple filling blocks (171) distributed in the same horizontal plane constitute one layer. The upper filling layer (17) and the lower filling layer (18) include multiple layers of filling blocks (171). The filler blocks (171) in adjacent layers are staggered; The upper fine-hole partition (15) and the lower fine-hole partition (16) are both composed of two parallel mesh plates (151) and multiple support rods (154) arranged between the two mesh plates (151). The multiple support rods (154) are vertically arranged and both ends of each support rod (154) are fixed to the two mesh plates (151). A buffer cavity (153) is formed between the two mesh plates. The lifting channel includes a doorway (158) opened at the same position on two perforated plates (151). The doorway (158) is opened at the edge of the two perforated plates (151). The upper fine perforated partition (15) is slidably connected to a horizontal doorway (155) corresponding to the doorway (158).

2. The deoxidation tower for car coating film production with easily replaceable packing material as described in claim 1, characterized in that: The horizontal door panel (155) is set between two layers of perforated plates (151). The height of the horizontal door panel (155) matches the height of the buffer cavity (153). The horizontal door panel (155) and the buffer cavity (153) are slidably connected. The horizontal door panel (155) has a mesh (152). The mesh (152) on the horizontal door panel (155) and the mesh (152) on the adjacent perforated plate (151) are in the same distribution state. The inner side wall of the tower body (1) is provided with a fixing component corresponding to the horizontal door panel (155).

3. A deoxidation tower for car coating film production with easily replaceable packing material as described in claim 2, characterized in that: The fixing assembly includes a fixing block (156) set on the mesh plate (151) corresponding to the horizontal door panel (155), and a vertically set fixing rod (157) inserted into each fixing block (156) corresponding to the horizontal door panel (155). The diameter of the fixing rod (157) is adapted to the diameter of the mesh (152) on the horizontal door panel (155), and the fixing rod (157) is inserted into the mesh (152).

4. A deoxidation tower for car coating film production with easily replaceable packing material as described in claim 1, characterized in that: Multiple anti-detachment support rods (2) are provided on the inner side wall of the tower body (1) corresponding to the bottom side of the lower fine hole partition (16). One end of the multiple anti-detachment support rods (2) is fixed to the inner side wall of the tower body (1). The ends of the multiple anti-detachment support rods (2) away from the inner side wall of the tower body (1) are all inclined upwards. The ends of the multiple anti-detachment support rods (2) away from the inner side wall of the tower body (1) are all fixed to the bottom end of the lower fine hole partition (16). The multiple anti-detachment support rods (2) are circumferentially distributed in the same horizontal plane of the inner side wall of the tower body (1).

5. A deoxidation tower for car coating film production with easily replaceable packing material as described in claim 1, characterized in that: The tower body (1) has a lower material inlet (191) on its side wall corresponding to the lower fine hole partition (16). The bottom wall of the lower material inlet (191) and the top side of the lower fine hole partition (16) are on the same horizontal plane. The diameter of the lower material inlet (191) is smaller than the diameter of the upper material inlet (19).

6. A deoxidation tower for car coating film production with easily replaceable packing material as described in claim 1, characterized in that: Multiple climbing ladders (21) are provided on the inner wall of the tower body (1) below the lower perforated partition plate (16), and the climbing ladders (21) are distributed at equal intervals along the vertical direction.

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