Spraying modification system and modification method for glass fiber filter material

Abstract

The invention relates to a spraying modification system and method for a glass fiber filter material. The spraying modification system comprises a modification subsystem, a drying subsystem and a conveying subsystem. The conveying subsystem moves the filter material to be modified to the position below the modifying subsystem and the drying subsystem in the horizontal conveying direction through a conveying motor and a conveying net belt, so that the efficient modifying and drying process is achieved. The modification subsystem is provided with a plurality of paired modification nozzles which are used for uniformly spraying a modification reagent to the two sides of the to-be-modified filter material; the drying subsystem is used for providing dry air at a specific temperature by using a first fan and a heater so as to ensure that the modified filter material is quickly dried. The system is further provided with a recovery subsystem, gasified modification reagents are recovered through a second fan and a condensation recoverer, resource waste is reduced, and the cost is reduced. The system is compact in structure and convenient to mount and operate, has the advantages of efficient and uniform spraying effect, continuous modification and drying process and environmental protection of recoverable resources, and is suitable for industrial application.

Description

Technical Field

[0001] The invention relates to the technical field of aerosol purification, and in particular to a spray modification system and a modification method for glass fiber filter materials. Background Art

[0002] Glass fiber filter material is a kind of filter material widely used in various industries, and is favored because it can effectively remove various aerosols. This material has stable chemical properties, high mechanical strength and excellent wear resistance, so it has been widely used in chemical production, nuclear industry, optical electronics, biomedicine, precision instruments and power device protection, etc., and can effectively meet the strict requirements of many industries for pollutant emissions and environmental cleanliness.

[0003] However, in the actual production process of some industries, the process conditions are often characterized by high humidity, high acidity, and even high radiation. These extreme environmental conditions place more stringent requirements on the tolerance and stability of glass fiber filter materials. If the tolerance of glass fiber filter materials is poor, it may lead to damage to the filter material, failure of the filter, increased filtration resistance, and frequent replacement of the filter. This will not only significantly increase the amount of solid waste generated, but also increase the cost of use, affecting the overall economic benefits and environmental protection. Therefore, it is necessary to carry out targeted modification of glass fiber filter materials to improve their tolerance and the operational stability of the filtration process.

[0004] At present, there is no relevant technical solution for the direct modification system and method of glass fiber filter material. In view of the above problems, the present invention is proposed. Summary of the invention

[0005] The invention discloses a spraying modification system and a modification method for glass fiber filter material, aiming to solve the technical problems existing in the prior art.

[0006] According to one aspect of the present invention, there is provided a spray modification system for glass fiber filter material, comprising a modification subsystem, a drying subsystem and a conveying subsystem;

[0007] The conveying subsystem is provided with a conveying motor and a conveying mesh belt, which are connected to each other. The filter material to be modified is arranged on the conveying mesh belt and moves along the horizontal conveying direction under the drive of the conveying mesh belt. The conveying motor, the conveying mesh belt and the filter material to be modified conveyed by the conveying motor are all arranged below the modifying subsystem and the drying subsystem.

[0008] The modification subsystem is provided with a modification reagent tank for providing a modification reagent solvent and a plurality of modification nozzles, the plurality of modification nozzles are arranged in pairs, and are respectively arranged on both sides of the filter material to be modified which is conveyed by the transmission mesh belt, and the spraying direction of the modification nozzle is perpendicular to the conveying direction, so as to facilitate the spraying of the modification reagent solvent;

[0009] The drying subsystem is provided with a first fan, a heater and an air outlet. The first fan and the heater cooperate to provide dry air with a specific temperature. The air outlet is arranged above the conveyor mesh belt and the filter material to be modified conveyed by the conveyor mesh belt to ensure that the dry air is effectively discharged and dries the modified filter material passing through.

[0010] A plurality of modification nozzles are arranged on the left side of the air outlet, and the filter material to be modified passes through the plurality of modification nozzles and the air outlet in sequence along the conveying direction to optimize the continuity of the modification and drying process.

[0011] As a preferred technical solution, the number of multiple modification nozzles located on both sides of the filter material to be modified is equal, and the positions correspond one to one.

[0012] As a preferred technical solution, the number of the multiple modified nozzles is an even number.

[0013] As a preferred technical solution, a bracket is provided between the modification reagent tank and the plurality of modification nozzles, and the bracket adopts a hollow tube structure.

[0014] As a preferred technical solution, multiple modified nozzles adopt a fan-shaped structure.

[0015] As a preferred technical solution, the first fan, the heater and the air outlet are arranged in the same vertical direction, and the vertical direction is perpendicular to the conveying direction.

[0016] As a preferred technical solution, the specific temperature is 40°C-80°C.

[0017] As a preferred technical solution, a shell is also provided, and the modifying subsystem, the drying subsystem and the conveying subsystem are arranged inside the shell.

[0018] As a preferred technical solution, a recovery subsystem is also provided, and the recovery subsystem is arranged outside the shell.

[0019] As a preferred technical solution, the recovery subsystem is provided with a second fan and a condensation recovery device, and the second fan and the condensation recovery device cooperate to recover the modified reagent solvent vaporized inside the shell.

[0020] As a preferred technical solution, the conveying subsystem is further provided with a plurality of first conveying rollers and second conveying rollers to form a multi-roller conveyor to continuously convey the filter material to be modified to the conveyor mesh belt.

[0021] As a preferred technical solution, the conveying subsystem is further provided with a plurality of third conveying rollers to form a multi-roller conveyor to continuously output the modified filter material output by the conveyor mesh belt.

[0022] According to another aspect of the present invention, there is also provided a method for modifying using the above-mentioned spray modification system, comprising the following steps:

[0023] Turn on the conveying motor of the conveying subsystem to continuously convey the filter material to be modified;

[0024] Injecting the modifier solvent into the modifier tank, and spraying the modifier solvent on the filter material to be modified using a plurality of modification nozzles;

[0025] The first fan and the heater are turned on to dry the modified filter material through the air outlet.

[0026] As a preferred technical solution, after the modified filter material is dried, the second fan and the condensation recovery device are turned on to cool the liquefied and vaporized modifier solvent.

[0027] The technical solution adopted by the present invention can achieve at least one of the following beneficial effects:

[0028] 1. The present invention adopts a combined arrangement of a modification subsystem, a drying subsystem and a conveying subsystem, which can realize efficient spraying and drying of the filter material to be modified and optimize the continuity of the modification and drying process.

[0029] 2. The present invention adopts a plurality of modification nozzles arranged in pairs, which ensures uniform spraying of the modification reagent and improves the modification effect.

[0030] 3. The recovery subsystem provided in the present invention can effectively recover the vaporized modifier solvent, reduce resource waste, reduce costs, and contribute to environmental protection.

[0031] 4. The subsystems of the present invention are arranged inside the housing to form a compact overall structure, which is convenient for installation and operation and improves the safety and stability of the system.

[0032] 5. The spray modification method of the present invention is simple and easy to implement, with clear operation steps, and is convenient for industrial application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments, which constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions explain the present invention and do not constitute improper limitations on the present invention. In the drawings:

[0034] Figure 1 The present invention is a schematic diagram of the working principle of a spray modification system for glass fiber filter material.

[0035] Description of reference numerals:

[0036] 1. Modification subsystem; 11. Modification reagent tank; 12. Modification reagent pump; 13. Liquid flow meter; 14. Modification nozzle; 2. Drying subsystem; 21. First fan; 22. First gas flow meter; 23. Heater; 24. Air outlet; 3. Conveying subsystem; 31. Unwinding device; 32. Filter material to be modified; 33. First conveying roller; 34. Second conveying roller; 35. Conveying motor; 36. Conveying mesh belt; 37. Modified filter material; 38. Third conveying roller; 39. Rewinding device; 4. Recovery subsystem; 41. First one-way valve; 42. Second one-way valve; 43. Second fan; 44. Second gas flow meter; 45. Condensation recovery device; 46. Casing; 5. Partition. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. In the description of the present invention, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a magnetic connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In order to solve the problems existing in the prior art, the embodiment of the present invention provides a spray modification system for glass fiber filter material, such as Figure 1As shown, it includes a modification subsystem 1, a drying subsystem 2 and a conveying subsystem 3, and the above subsystems are arranged inside the housing 46. Among them, the modification subsystem 1 is used to achieve uniform spraying of the modifier to improve the surface performance and functional characteristics of the glass fiber filter material; the drying subsystem 2 is used to quickly and evenly dry the modifier on the surface of the filter material after spraying to ensure the stable adhesion and effective function of the modifier layer; the conveying subsystem 3 is used to convey the filter material 32 to be modified into the modification area of ​​the modification subsystem 1 and the drying area of ​​the drying subsystem 2 for spraying modification and drying.

[0041] like Figure 1 As shown, the conveying subsystem 3 includes an unwinding device 31, a first conveying roller 33, a second conveying roller 34, a conveying motor 35, a conveying mesh belt 36, a third transmission roller 38 and a rewinding device 39. Figure 1 The orientation of the spray modification system shown in the figure is based on the use state. The unwinding device 31, multiple first conveying rollers 33 and second conveying rollers 34 are located in the front section of the entire conveying subsystem 3, which are used to provide the modified filter material 32 to be sprayed, modified and dried; the conveying motor 35 and the conveying mesh belt 36 are located in the middle section of the entire conveying subsystem 3, which are used to cooperate with the modification subsystem 1 and the drying subsystem 2 to realize the modified spraying and drying of the filter material; the winding device 39 and multiple third transmission rollers 38 are located in the rear section of the entire conveying subsystem 3, which are used for the winding operation of the modified filter material 37. Preferably, the multiple first conveying rollers 33 and the second conveying rollers 34 are adjacent to the conveying mesh belt 36. Preferably, the horizontal plane of the middle section where the conveying motor 35 and the conveying mesh belt 36 are located is lower than that of the front section and the rear section, and is arranged directly below the modification subsystem 1 and the drying subsystem 2.

[0042] The unwinding device 31 serves as the starting end of the conveying subsystem 3, and provides the filter material 32 to be modified. The second conveying roller 34 is arranged between the plurality of first conveying rollers 33 to form a multi-roller conveyance, so as to stably and continuously convey the filter material to the conveying mesh belt 36. Preferably, the second conveying roller 34 is a floating roller, which is used to adjust the tension of the filter material 32 to be modified in real time, and absorb the tension changes generated during the conveying process by automatically adjusting the tightness of the filter material 32 to be modified, so as to avoid the filter material 32 to be modified from being overstretched or relaxed, thereby affecting the modification effect and processing quality. The first conveying roller 33 is a guide roller, which guides the filter material 32 to be modified to move along the set path, so that it maintains accurate positioning and prevents deviation and wrinkling. Further preferably, the number of the first conveying rollers 33 is 4-6. The coordinated use of the second conveying roller 34 and the plurality of first conveying rollers 33 helps to improve the stability of the transmission of the filter material 32 to be modified, as well as the uniformity of the subsequent modification treatment. Accordingly, the winding device 39 serves as the terminal of the conveying subsystem 3, and a plurality of third conveying rollers 38 are arranged between the winding device 39 and the conveying mesh belt 36, and the modified filter material 37 is collected by the conveying of the plurality of third conveying rollers 38. Preferably, the number of the plurality of third conveying rollers 38 between the winding device 39 and the conveying mesh belt is 4-6.

[0043] The transmission motor 35 and the transmission mesh belt 36 are located in the middle section of the entire transmission subsystem 3, and are the core links of the entire transmission subsystem 3. In order to ensure that the filter material to be modified 32 and the modified filter material 37 move smoothly during the transmission process, preferably, the number of transmission motors 35 is 2, which are respectively located at the two ends of the middle section of the entire transmission subsystem 3, provide driving force, and are connected to the transmission mesh belt 36 to achieve its precise transmission speed control and operation stability control. Further preferably, the above-mentioned two transmission motors 35 are arranged on the same horizontal plane, and driven by them, the transmission mesh belt 36 transmits the filter material to be modified 32 to move along the horizontal transmission direction. The transmission mesh belt 36 is used to carry and smoothly transmit the modified filter material 32 and the modified filter material 37, and ensures that they maintain a consistent speed and position during the spray modification and drying process through uniform movement to obtain a uniform modification effect.

[0044] by Figure 1The orientation of the spray modification system shown in the figure is based on the orientation in the use state. The modification subsystem 1 is arranged on the left side of the drying subsystem 2. The modification subsystem 1 and the drying subsystem 2 are arranged together above the middle section of the conveying subsystem 3, that is, above the transmission motor 35, the conveying mesh belt 36, and the filter material 32 to be modified conveyed by the conveying mesh belt 36. The conveying mesh belt 36 conveys the filter material 32 to be modified in the horizontal direction, and sequentially undergoes modification by the modification subsystem 1 and drying by the drying subsystem 2 to obtain the modified filter material 37. The modification subsystem 1 includes a modification reagent tank 11, a modification reagent pump 12, a liquid flow meter 13 and a plurality of modification nozzles 14 connected in sequence. The modification reagent tank 11, the modification reagent pump 12 and the liquid flow meter 13 are located in the same horizontal plane, and the plurality of modification nozzles 14 are located below the above horizontal plane, and the spraying direction of the plurality of modification nozzles 14 is perpendicular to the above horizontal plane. The modification reagent tank 11 is used to provide the modification reagent; the modification reagent pump 12 is connected to the liquid flow meter 13 to control the modification reagent flow; a plurality of modification nozzles 14 are respectively arranged on both sides of the filter material 32 to be modified which is conveyed by the conveying mesh belt 36, and are used to apply the modification agent to the surface of the filter material 32 to be modified by spraying, so as to form a uniform and dense modification layer, so as to enhance its filtering effect, durability, anti-pollution and other specific application needs. In order to ensure the uniformity of spraying, preferably, a plurality of modification nozzles 14 are arranged in pairs, and the direction of the paired modification nozzles 14, that is, the spraying direction of the modification nozzles 14 is perpendicular to the conveying direction of the filter material 32 to be modified, and the number of modification nozzles 14 located on both sides of the filter material 32 to be modified is equal, and the positions correspond one to one. Further preferably, the number of modification nozzles 14 is an even number. The number of modification nozzles 14 is 2-10.

[0045] The drying subsystem 2 includes a first fan 21, a first gas flow meter 22, a heater 23 and an outlet air 24 connected in sequence. Figure 1 The above equipment is arranged on the same vertical plane, which is perpendicular to the conveying direction of the filter material 32 to be modified. The air outlet 24 is located above the conveying direction, and the dry gas is discharged to dry the modified filter material 37. The horizontal direction determined by the conveying direction of the conveying mesh belt 36 is used as the standard, and the multiple modification nozzles 14 are located on the left side of the air outlet 24, so that the filter material 32 to be modified is first modified by the multiple modification nozzles 14 under the conveying of the conveying mesh belt 36, and then dried by the air outlet 24.

[0046] Through the above structural design, first, the transmission subsystem 3 is used to provide continuous and stable transmission of the filter material 32 to be modified; secondly, the modification reagent is added to the modification reagent tank 11, and the modification reagent flow and speed are controlled by setting the parameters of the modification reagent pump 12 and the liquid flow meter 13, and the modification reagent is sprayed on the surface of the filter material 32 to be modified through the modification nozzle 14; the parameters of the first gas flow meter 22 are set, the first fan 21 and the heater 23 are turned on, and the modified filter material 37 is dried through the air outlet 24. The cooperation of the above subsystems can directly and continuously spray the glass fiber filter material, and the system structure is simple and the operation process is simple and convenient. At the same time, the above subsystems are all arranged inside the housing 46, which plays a role of isolating the outside and ensuring the green and environmental protection of the modification process.

[0047] In some preferred embodiments, a recovery subsystem 4 is further provided outside the housing 46 for condensing and recovering the vapor of the modifier solvent inside the housing 46, thereby realizing efficient recovery and reuse of the modifier solvent. Figure 1 The orientation of the spray modification system shown in the use state is based on the first one-way valve 41 arranged on the left side of the shell 46, the second one-way valve 42, the second fan 43, the second gas flow meter 44 and the condensation recovery device 45 arranged on the right side of the shell 46 and connected in sequence, so as to ensure the effective recovery of the modifier solvent and the environmental protection of the whole system. The first one-way valve 41 and the second one-way valve 42 are used to ensure the one-way flow of the airflow, prevent the recovered modifier solvent or gas from flowing back to the modification area of ​​the modification subsystem 1 and the drying area of ​​the drying subsystem 2, so as to maintain the airflow stability of the recovery subsystem 4 and ensure the safety and efficiency of the recovery process. In order to achieve the above purpose, preferably, the first one-way valve 41 is an air inlet one-way valve, and the second one-way valve 42 is an air outlet one-way valve. The second fan 43 is used to generate a negative pressure or positive pressure airflow, effectively guide the modifier solvent gas volatilized during the spray modification and drying process to the condensation recovery device 45, and improve the efficiency of the modifier solvent recovery. Preferably, the condenser recovery device 45 includes a condensing coil, a refrigeration device and a collection container, which are used to cool the modifier solvent gas to a liquid state for recovery and reuse, thereby reducing the consumption and emission of the modifier solvent, improving the environmental protection and economy of the entire system, and realizing green and environmental protection of the entire modification process.

[0048] In some preferred embodiments, the modifying agent tank 11 is provided with a stirring device for continuously stirring the injected modifying agent to ensure uniform distribution of the components of the modifying agent, thereby achieving consistency in the concentration of each component of the modifying agent during the spraying process, obtaining a uniform modification effect, and avoiding stratification or precipitation due to long-term standing. In addition, continuous stirring can also prevent the highly viscous modifying agent from adhering to the side wall or bottom of the modifying agent tank 11, reducing the risk of clogging and extending its service life.

[0049] In some preferred embodiments, the modifying agent is one of a hydrophobic modifying agent, an acid-base resistant modifying agent, an oleophobic modifying agent, a charged modifying agent, a catalytic modifying agent, and an anti-wear modifying agent.

[0050] In some preferred embodiments, a bracket is provided between the modification nozzle 14 and the liquid flow meter 13. The bracket is provided by a hollow tube. The modification nozzle 14 is provided in a fan shape. The hollow tube bracket cooperates with the fan-shaped modification nozzle 14 to achieve uniform spraying of the modification reagent solvent.

[0051] In some preferred embodiments, in order to ensure the conveying stability and rigidity of the conveying mesh belt 36, while ensuring that the tension can be adjusted and support can be provided for the filter material to be modified 32 and the modified filter material 37, and to prevent the modified filter material 37 from being damaged, the conveying mesh belt 36 is made of stainless steel.

[0052] In some preferred embodiments, a multi-motor synchronous control system (not shown in the figure) is provided to control the rotation of the unwinding device 31, the rewinding device 39 and the conveying motor 35 to ensure that the filter material before and after modification is not subjected to excessive tension.

[0053] In some preferred embodiments, in order to improve the drying effect and balance the drying rate of the modifier with the heat resistance and modification effect of the filter material, the temperature of the hot air discharged from the air outlet 24 is 40-80° C. Within this temperature range, the modifier solvent can be effectively evaporated, and can be evenly dried on the surface of the filter material and form a stable attachment, while avoiding thermal damage to the filter material structure caused by excessively high temperatures.

[0054] In some preferred embodiments, the flow parameter of the second gas flow meter 44 is set to 1-2 times the flow parameter of the first gas flow meter 22 to ensure that the gas collection speed in the recovery subsystem 4 is faster, generating negative pressure on the gas environment in the housing 46, and facilitating the recovery of the modifier solvent gas.

[0055] In some preferred embodiments, the first fan 21 and the second fan 43 are turned off for a time interval of 0-30 minutes to ensure that the recovery subsystem 4 fully recovers the gas in the housing 46 after the drying process is completed.

[0056] In some preferred embodiments, a partition 5 is further provided between the modifying subsystem 1 and the drying subsystem 2 to serve as a barrier, so that the modifying subsystem 1 and the drying subsystem 2 are relatively independent in space, thereby preventing the hot air generated by the drying subsystem 2 from adversely affecting the modification process of the modifying subsystem 1.

[0057] The present invention also provides a method for modifying glass fiber filter material using the above-mentioned spray modification system, comprising the following steps:

[0058] S1: Turn on the unwinding device 31, the conveying motor 35 and the rewinding device 39, and continuously convey the filter material 32 to be modified by means of the first conveying roller 33 and the second conveying roller 34;

[0059] S2: injecting the modifier into the modification reagent tank 11, turning on its stirring device, and continuously stirring the modifier; setting the flow parameter of the liquid flow meter 13, and starting the modification reagent pump 12, and using the modification nozzle 14 to spray and modify the filter material 32 to be modified;

[0060] S3: setting the parameters of the first gas flow meter 22, starting the first fan 21 and the heater 23, and drying the modified filter material 37 when the modified filter material 37 is transferred to the corresponding position of the air outlet 24;

[0061] S4: setting the second gas flow meter 44, turning on the second fan 43 and the condensation recovery device 45, cooling, liquefying and recovering the heat-volatile modifier solvent gas;

[0062] S5: After the spray modification is completed, turn off the modification reagent pump 12, the unwinding device 31, the conveying motor 35 and the winding device 39 in sequence, then turn off the heater 23 and the first fan 21, and after a certain period of time, turn off the condensation recovery device 45 and the second fan 43 to ensure that the recovery subsystem 4 fully recovers the gas in the outer shell 46.

[0063] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A spray modification system for glass fiber filter material, characterized in that: It includes a modification subsystem, a drying subsystem and a conveying subsystem; The conveying subsystem is provided with a conveying motor and a conveying mesh belt, the conveying motor and the conveying mesh belt are connected, the filter material to be modified is arranged on the conveying mesh belt, and is driven by the conveying mesh belt to move along the horizontal conveying direction; the conveying motor, the conveying mesh belt and the filter material to be modified conveyed by the conveying motor are all arranged below the modifying subsystem and the drying subsystem; The modification subsystem is provided with a modification reagent tank for providing a modification reagent solvent and a plurality of modification nozzles, the plurality of modification nozzles are arranged in pairs, and are respectively arranged on both sides of the filter material to be modified which is conveyed by the transmission mesh belt, and the spraying direction of the modification nozzle is perpendicular to the conveying direction, so as to facilitate spraying of the modification reagent solvent; The drying subsystem is provided with a first fan, a heater and an air outlet. The first fan and the heater cooperate to provide dry air with a specific temperature. The air outlet is arranged above the conveyor mesh belt and the filter material to be modified conveyed by the conveyor mesh belt to ensure that the dry air is effectively discharged and dries the modified filter material passing through. The multiple modification nozzles are arranged on the left side of the air outlet, and the filter material to be modified passes through the multiple modification nozzles and the air outlet in sequence along the conveying direction to optimize the continuity of the modification and drying process.

2. The spray modification system according to claim 1, characterized in that: The number of the multiple modification nozzles located on both sides of the filter material to be modified is equal, and the positions correspond one to one.

3. The spray modification system according to claim 2, characterized in that: The number of the plurality of modifying nozzles is an even number.

4. The spray modification system according to claim 1, characterized in that: A bracket is arranged between the modification reagent tank and the plurality of modification nozzles, and the bracket adopts a hollow tube structure.

5. The spray modification system according to claim 4, characterized in that: The multiple modified nozzles adopt a fan-shaped structure.

6. The spray modification system according to claim 1, characterized in that: The first fan, the heater and the air outlet are arranged in the same vertical direction, and the vertical direction is perpendicular to the conveying direction.

7. The spray modification system according to claim 1, characterized in that: The specific temperature is 40°C-80°C.

8. The spray modification system according to any one of claims 1 to 7, characterized in that: A shell is also provided, and the modifying subsystem, the drying subsystem and the conveying subsystem are arranged inside the shell.

9. The spray modification system according to claim 8, characterized in that: A recovery subsystem is also provided, and the recovery subsystem is arranged outside the housing.

10. The spray modification system according to claim 9, characterized in that: The recovery subsystem is provided with a second fan and a condensation recovery device, and the second fan and the condensation recovery device cooperate to recover the modified reagent solvent vaporized inside the shell.

11. The spray modification system according to any one of claims 1 to 7, characterized in that: The conveying subsystem is also provided with a plurality of first conveying rollers and second conveying rollers to form a multi-roller conveyor to continuously convey the filter material to be modified to the conveying mesh belt.

12. The spray modification system according to any one of claims 1 to 7, characterized in that: The conveying subsystem is also provided with a plurality of third conveying rollers to form a multi-roller conveyor to continuously output the modified filter material output by the conveying mesh belt.

13. A modification method using the spray modification system according to any one of claims 1 to 12, characterized in that: The steps include: Turning on the conveying motor of the conveying subsystem to continuously convey the filter material to be modified; Injecting the modifier solvent into the modifier tank, and spraying the modifier solvent on the filter material to be modified using a plurality of modification nozzles; The first fan and the heater are turned on to dry the modified filter material through the air outlet.

14. The modification method according to claim 13, characterized in that: After the modified filter material is dried, the second fan and the condensation recovery device are turned on to cool the liquefied and gasified modifier solvent.

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