Flue gas color-changing packaging paper processing technology and processing equipment thereof

Abstract

The invention discloses a smoke discoloration packaging paper processing technology and processing equipment thereof, and relates to the technical field of packaging papers.The smoke discoloration packaging paper processing technology comprises the following steps that weak acid substances are mixed, acid A, acid B and acid C are weighed, the acid A is used for neutralizing nicotine, the acid B is responsible for color development, the acid C is used for creating an acid environment for an oxidation-reduction reaction, and the acid A is used for neutralizing nicotine; adding the weighed weakly acidic substance into a mixed solvent of water, alcohol and propylene glycol, and uniformly stirring and mixing to form an acidic solution; in the packaging paper preparation and processing process, harmful substances such as nicotine and tar generated by combustion in the product smoking process can be subjected to neutralization reaction through the acid solution and the potassium permanganate solution coated on the surface of the packaging paper, heat generated in the product smoking process can be utilized, and the chemical property of potassium permanganate is combined, so that the packaging paper is prepared. In the reaction process of potassium permanganate, the color of smoke of cigarette packaging paper is changed, and the function of warning that smoking is harmful is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging paper, in particular to a smoke-discolored packaging paper processing technology and processing equipment thereof. Background Art

[0002] Cigarette wrapping paper is the paper used to wrap cigarettes. It mainly protects the contents of cigarettes (such as tobacco) from the external environment. This includes preventing tobacco from getting damp and deteriorating, and blocking external odors from entering the cigarette. For example, in a humid environment, the wrapping paper can act as a barrier to reduce the contact between water vapor and tobacco, keep the tobacco dry, and thus ensure the quality and taste of the cigarette.

[0003] During the smoking process of cigarettes, the burning of cigarette wrapping paper and tobacco will produce some nicotine, tar and other harmful substances, causing certain harm. For this reason, we propose a smoke-discolored wrapping paper processing technology and processing equipment. Summary of the invention

[0004] The object of the present invention is to provide a smoke discoloration packaging paper processing technology and processing equipment to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a smoke discoloration packaging paper processing process, comprising the following steps:

[0006] S1: Weakly acidic substances are mixed, and Acid A, Acid B and Acid C are weighed. Acid A is used to neutralize nicotine, Acid B is responsible for color development, and Acid C creates an acidic environment for redox reaction. The weighed weakly acidic substances are added to a mixed solvent of water, alcohol and propylene glycol, and stirred to mix evenly to form an acidic solution;

[0007] S2: Preparation of potassium permanganate solution: weigh potassium permanganate crystals to prepare a 0.8‰ potassium permanganate solution, add water to the potassium permanganate crystals, and stir until no undissolved crystal particles remain;

[0008] S3: Packaging paper coating processing, pouring the prepared acid solution into the coating equipment, starting the coating machine, and evenly coating the acid solution on the inner layer of the tipping paper;

[0009] S4: Back coating with potassium permanganate solution: inject 0.8‰ potassium permanganate solution into the liquid storage tank of the back coating equipment, start the back coating component, and evenly coat the potassium permanganate solution on the back surface of the tipping paper;

[0010] S5: Drying the coated packaging paper using a hot air dryer;

[0011] S6: Appearance inspection: Use visual inspection to check whether there are scratches, wrinkles, color difference, spots and other defects on the surface of the packaging paper.

[0012] A smoke discoloration packaging paper processing equipment, comprising a back coating machine box, a feed port and a discharge port are respectively provided on both sides of the back coating machine box, a storage tank for storing potassium permanganate solution is installed on the upper end of the back coating machine box, a conveying assembly for conveying packaging paper is arranged on the back coating machine box, two groups of conveying assemblies are symmetrically arranged, and the two groups of conveying assemblies are connected and transmitted by a transmission assembly, a liquid discharge assembly for auxiliary liquid discharge is arranged inside the back coating machine box, and a purifier for exhaust gas treatment is installed on the upper end of the back coating machine box;

[0013] The liquid outlet assembly includes a lifting plate arranged inside the back coating machine box, a fixed pipe is fixed on the lifting plate, a delivery pump for pumping and conveying is installed at the lower end of the storage tank, a hose is connected between the fixed pipe and the liquid outlet end of the delivery pump, a lifting assembly for lifting the lifting plate and a guide assembly for guiding during the lifting process are arranged inside the back coating machine box, and a control assembly for controlling the discharge pressure is arranged at the front end of the fixed pipe;

[0014] The control component includes a control cylinder that is connected and fixed to the front end of the fixed tube, a nozzle is fixed to the front end of the control cylinder, a spherical groove is rotatably connected inside the control cylinder, a ball is rotatably connected to the spherical groove, a through hole is opened on the ball for assisting communication with the fixed tube and the nozzle, and a rotating component is arranged inside the back coating machine box for rotating the ball during the lifting process.

[0015] Preferably, the rotating assembly includes a rotating shaft rotatably connected to the control cylinder, one end of the rotating shaft is fixed to the sphere, and the other end of the rotating shaft is fixed with a third gear. The interior of the back coating machine box is fixed with a rack through multiple groups of mounting rods, and the third gear and the rack are meshed with each other.

[0016] Preferably, the lifting assembly includes a threaded rod rotatably connected to the lifting plate, a threaded tube is threadedly engaged on the threaded rod, one end of the threaded tube is fixed to the inside of the back coating machine box, and a driving motor for driving the threaded rod is installed on the lifting plate.

[0017] Preferably, the guide assembly includes a sleeve fixed inside the back coating machine chassis, a sliding rod is slidably connected to the sleeve, and one end of the sliding rod is fixed to the lifting plate.

[0018] Preferably, the conveying assembly includes two groups of connecting shafts rotatably connected to the back coating machine box, and the two groups of connecting shafts are fixed with conveying rollers for driving against the packaging paper. A driving assembly for driving the connecting shafts is arranged on the outer side of the back coating machine box, and the two groups of connecting shafts are connected and driven by a linkage assembly.

[0019] Preferably, the linkage assembly includes a first gear and a second gear respectively fixed to one end of the two sets of connecting shafts, and the first gear and the second gear are meshed with each other.

[0020] Preferably, the transmission assembly includes a pulley fixed to one end of the connecting shaft, and the pulleys on the two groups of the conveying assemblies are connected and driven by a belt.

[0021] Preferably, the driving assembly comprises an L-shaped frame fixed to the outside of the back coating machine case, and a mounting motor for driving the connecting shaft is mounted on the L-shaped frame.

[0022] Preferably, the storage tank is provided with a stirring assembly for stirring the potassium permanganate solution, the stirring assembly includes a stirring shaft rotatably connected to the interior of the storage tank, a stirring impeller is fixed on the stirring shaft, and an operating motor for driving the stirring shaft is installed at the upper end of the storage tank.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the process of preparing and processing the packaging paper, the acidic solution and potassium permanganate solution coated on the surface of the packaging paper can not only neutralize harmful substances such as nicotine and tar generated during the smoking process, but also utilize the heat generated during smoking and the chemical properties of potassium permanganate to neutralize carbon monoxide and part of the tar substances. In addition, during the reaction of potassium permanganate, the cigarette packaging paper changes color due to smoke, which serves to warn people that smoking is harmful.

[0025] 2. In the process of back-coating the packaging paper with potassium permanganate solution according to the present invention, the distance between the nozzle and the conveyed packaging paper is controlled by the cooperation of the lifting component and the guide component, so as to facilitate flexible back-coating operation. In the process of adjusting the distance, it can avoid excessive pressure, which causes uneven accumulation of potassium permanganate solution on the packaging paper, and also avoid insufficient pressure, which causes the potassium permanganate solution to fail to reach the surface of the packaging paper or to be unevenly distributed when it reaches the surface of the packaging paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The schematic diagram of the packaging paper processing process of the present invention is

[0027] Figure 2 It is a schematic diagram of the overall appearance structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the transmission assembly and the driving assembly structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the connection assembly of the present invention;

[0030] Figure 5 It is a schematic diagram of the internal structure of the back-coated chassis of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the conveying assembly of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the liquid outlet assembly, the lifting assembly and the guide assembly of the present invention;

[0033] Figure 8 It is a schematic diagram of the control component and the rotating component structure of the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the stirring assembly of the present invention.

[0035] In the figure: 101-back coating chassis; 102-feeding port; 103-discharging port; 104-storage tank; 201-connecting shaft; 202-conveying roller; 301-first gear; 302-second gear; 401-L-shaped frame; 402-mounting motor; 501-pulley; 502-belt; 601-lifting plate; 602-fixed pipe; 603-hose; 701-threaded rod; 702-threaded pipe; 703-driving motor; 801-sleeve; 802-sliding rod; 901-control cylinder; 902-sprinkler; 903-spherical groove; 904-sphere; 905-through hole; 1001-rotating shaft; 1002-third gear; 1003-rack; 1004-mounting rod; 1101-stirring shaft; 1102-stirring impeller; 1103-operating motor; 12-purifier. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the 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.

[0037] Example 1

[0038] See also Figure 1 The smoke-discolored packaging paper processing process shown in the figure includes the following steps:

[0039] S1: Mix weak acidic substances, accurately weigh acid A, acid B, and acid C in proportion, and the ratio of acid A, acid B, and acid C is 6:2:2;

[0040] Acid A is used to neutralize nicotine, acid B is mainly responsible for color development, and acid C creates an acidic environment for the redox reaction. Slowly add the weighed weak acidic substance to a mixed solvent of an appropriate amount of water, alcohol, and a small amount of propylene glycol, stirring while adding to ensure uniform mixing to form a stable acidic solution. In the mixed solvent, water accounts for 60% of the total volume, alcohol accounts for 30% of the total volume, and propylene glycol accounts for 10% of the total volume;

[0041] in:

[0042] Acid A is an organic acid, such as citric acid or malic acid;

[0043] B acid is an organic acid or inorganic acid having a chromogenic group;

[0044] C acid is a strong acid like sulfuric acid and hydrochloric acid;

[0045] S2: Preparation of potassium permanganate solution: accurately weigh potassium permanganate crystals to prepare a 0.8‰ potassium permanganate solution. Slowly add the potassium permanganate crystals to an appropriate amount of water and stir until completely dissolved. The solution should be clear and transparent without any undissolved crystal particles remaining. For the ratio of potassium permanganate crystals to water, 1219 grams of water should be added for every 1 gram of potassium permanganate crystals weighed.

[0046] S3: Packaging paper coating process: pour the prepared acid solution into the material tank of the coating equipment, start the coating machine, and the tipping paper passes over the material tank at a steady speed, and the acid solution is evenly coated on the inner layer of the tipping paper;

[0047] S4: Back coating with potassium permanganate solution: inject the prepared 0.8‰ potassium permanganate solution into the liquid storage tank of the back coating equipment, start the back coating assembly, and let the tipping paper pass through the back coating area at a set speed. The potassium permanganate solution is evenly back coated on the back surface of the tipping paper;

[0048] S5: Drying the coated packaging paper using a hot air dryer;

[0049] S6: Appearance inspection: Use visual inspection to check whether there are scratches, wrinkles, color difference, spots and other defects on the surface of the packaging paper.

[0050] During the preparation and processing of packaging paper, the acidic solution and potassium permanganate solution coated on the surface of the packaging paper can not only neutralize the nicotine, tar and other harmful substances produced during the smoking process, but also utilize the heat generated during smoking, combined with the chemical properties of potassium permanganate, to neutralize carbon monoxide and some tar substances. In the process of the potassium permanganate reaction, the cigarette packaging paper changes color due to the smoke, which serves to warn people that smoking is harmful.

[0051] Example 2

[0052] See also Figure 2-9 The smoke discoloration packaging paper processing equipment shown in the figure includes a back coating machine box 101, and a feed port 102 and a discharge port 103 are respectively opened on both sides of the back coating machine box 101. A storage tank 104 for storing potassium permanganate solution is installed on the upper end of the back coating machine box 101. A conveying assembly for conveying packaging paper is arranged on the back coating machine box 101. The conveying assembly is symmetrically arranged in two groups, and the two groups of conveying assemblies are connected and transmitted by a transmission assembly. A liquid discharge assembly for auxiliary liquid discharge is arranged inside the back coating machine box 101, and a purifier 12 for exhaust gas treatment is installed on the upper end of the back coating machine box 101;

[0053] The liquid outlet assembly includes a lifting plate 601 disposed inside the back coating machine box 101, a fixed pipe 602 is fixed on the lifting plate 601, a delivery pump for pumping and conveying is installed at the lower end of the storage tank 104, a hose 603 is connected between the fixed pipe 602 and the liquid outlet end of the delivery pump, a lifting assembly for lifting the lifting plate 601 and a guide assembly for guiding during the lifting process are disposed inside the back coating machine box 101, and a control assembly for controlling the discharge pressure is disposed at the front end of the fixed pipe 602;

[0054] The control assembly includes a control cylinder 901 that is connected and fixed to the front end of the fixed tube 602, and a nozzle 902 is connected and fixed to the front end of the control cylinder 901. A spherical groove 903 is rotatably connected inside the control cylinder 901, and a ball 904 is rotatably connected to the spherical groove 903. A through hole 905 for assisting communication with the fixed tube 602 and the nozzle 902 is opened on the ball 904. A rotating assembly for rotating the ball 904 during the lifting process is provided inside the back coating machine box 101;

[0055] It should be noted here that: during the back coating operation of the packaging paper with potassium permanganate solution, the distance between the nozzle 902 and the conveyed packaging paper is controlled by the cooperation of the lifting component and the guide component, which is convenient for flexible back coating operation. In the process of adjusting the distance, it can avoid excessive pressure, which causes uneven accumulation of potassium permanganate solution on the packaging paper, and insufficient pressure, which causes the potassium permanganate solution to fail to reach the surface of the packaging paper or to be unevenly distributed when it reaches the surface of the packaging paper.

[0056] Preferably, the rotating assembly includes a rotating shaft 1001 rotatably connected to the control cylinder 901, one end of the rotating shaft 1001 is fixed to the sphere 904, the other end of the rotating shaft 1001 is fixed with a third gear 1002, the interior of the back coating box 101 is fixed with a rack 1003 through multiple sets of mounting rods 1004, and the third gear 1002 and the rack 1003 are meshed with each other;

[0057] It should be noted here that: during the lifting and lowering of the control cylinder 901, the rotating shaft 1001 is driven to move synchronously. During the movement of the rotating shaft 1001, the rotating shaft 1001 and the ball 904 are driven to rotate through the mutual meshing transmission between the third gear 1002 and the rack 1003.

[0058] Preferably, the lifting assembly includes a threaded rod 701 rotatably connected to the lifting plate 601, a threaded tube 702 is threadedly engaged with the threaded rod 701, one end of the threaded tube 702 is fixed to the inside of the back coating machine box 101, and a driving motor 703 for driving the threaded rod 701 is installed on the lifting plate 601; the guide assembly includes a sleeve 801 fixed to the inside of the back coating machine box 101, a sliding rod 802 is slidably connected to the sleeve 801, and one end of the sliding rod 802 is fixed to the lifting plate 601;

[0059] It should be noted here that: the threaded rod 701 is driven to rotate by the driving motor 703. During the rotation of the threaded rod 701, the lifting plate 601 is lifted and lowered through the mutual meshing transmission between the threaded rod 701 and the threaded tube 702 and the sliding guiding effect of the sleeve 801 and the sliding rod 802.

[0060] Preferably, the conveying assembly includes two groups of connecting shafts 201 rotatably connected to the back coating machine box 101, and the two groups of connecting shafts 201 are fixed with conveying rollers 202 for driving against the packaging paper. The outer side of the back coating machine box 101 is provided with a driving assembly for driving the connecting shafts 201, and the two groups of connecting shafts 201 are connected and driven by a linkage assembly; the linkage assembly includes a first gear 301 and a second gear 302 respectively fixed to one end of the two groups of connecting shafts 201, and the first gear 301 and the second gear 302 are meshed with each other;

[0061] It should be noted here that: the connecting shaft 201 is driven to rotate through the driving assembly. During the rotation of the connecting shaft 201, the mutual meshing transmission between the first gear 301 and the second gear 302 causes the two groups of connecting shafts 201 and the conveying rollers 202 on the conveying assembly to rotate in opposite directions. Since the conveying rollers 202 are against the packaging paper, the packaging paper is driven to be conveyed through the opposite rotation of the two groups of conveying rollers 202.

[0062] Preferably, the transmission assembly includes a pulley 501 fixed to one end of the connecting shaft 201, and the pulleys 501 on the two sets of conveying assemblies are connected and transmitted via a belt 502;

[0063] It should be noted here that: in the process of conveying the packaging paper, the connection transmission between the belt 502 and the two sets of pulleys 501 drives the two sets of conveying components to convey the packaging paper synchronously, thereby reducing the probability of wrinkles on the packaging paper during the conveying process, and facilitating higher-quality potassium permanganate solution back coating operations on the packaging paper.

[0064] Preferably, the driving assembly includes an L-shaped frame 401 fixed to the outside of the back coating machine box 101, and a mounting motor 402 for driving the connecting shaft 201 is mounted on the L-shaped frame 401;

[0065] It should be noted here that: the motor 402 is installed on the L-shaped frame 401 to drive the connecting shaft 201 to rotate.

[0066] Preferably, the storage tank 104 is provided with a stirring assembly for stirring the potassium permanganate solution, the stirring assembly includes a stirring shaft 1101 rotatably connected to the inside of the storage tank 104, a stirring rotor 1102 is fixed to the stirring shaft 1101, and an operating motor 1103 for driving the stirring shaft 1101 is installed at the upper end of the storage tank 104;

[0067] It should be noted here that: by operating the motor 1103, the stirring blade 1102 on the stirring shaft 1101 is driven to rotate, and the potassium permanganate solution is stirred by the rotation of the stirring blade 1102, so as to facilitate a more uniform discharge operation of the potassium permanganate solution.

[0068] In this scheme: a smoke discoloration packaging paper processing equipment comprises the following steps:

[0069] During the process of back coating the packaging paper with potassium permanganate solution, the packaging paper is passed through the back coating machine box 101 through the action of the feed port 102 and the discharge port 103. During the passing process, the packaging paper is abutted against the two groups of conveying rollers 202 on the two groups of conveying components. After the packaging paper passes through the back coating machine box 101, the motor 402 is installed on the L-shaped frame 401 to drive the connecting shaft 201 to rotate. During the rotation of the connecting shaft 201, the first gear 301 and the second gear 302 are mutually engaged. The meshing transmission causes the two sets of connecting shafts 201 and the conveying rollers 202 on the conveying assembly to rotate in opposite directions. Since the conveying rollers 202 abut against the packaging paper, the packaging paper is driven to be conveyed through the opposite rotation of the two sets of conveying rollers 202. In the process of conveying the packaging paper, the connection transmission between the belt 502 and the two sets of pulleys 501 drives the two sets of conveying assemblies to convey the packaging paper synchronously, thereby reducing the probability of wrinkles on the packaging paper during the conveying process, and facilitating the back coating of the packaging paper with potassium permanganate solution with higher quality.

[0070] In the process of driving the packaging paper to be transported on the back coating machine box 101, the potassium permanganate solution in the storage tank 104 is sprayed toward the transported packaging paper through the hose 603, the fixed tube 602, the control cylinder 901 and the nozzle 902 through the driving action of the transport pump, and the packaging paper is back-coated with the potassium permanganate solution. In the process of back coating, the lifting plate 601 is driven to perform lifting movement through the cooperation of the lifting component and the guide component. The lifting and lowering of the lifting plate 601 controls the distance between the nozzle 902 and the transported packaging paper, so as to facilitate flexible back coating operation.

[0071] In the process of adjusting the nozzle 902 to rise and fall, when the nozzle 902 is lowered, the sphere 904 is driven to rotate by the rotating assembly. The rotation of the sphere 904 increases the aperture between the through hole 905 on the sphere 904 and the fixed tube 602 and the nozzle 902. The increase in the aperture relieves the pressure of the spray liquid on the nozzle 902, and avoids excessive pressure, which causes the potassium permanganate solution to form uneven accumulation on the packaging paper, and even splashes the solution. When the nozzle 902 is raised, the rotating assembly The sphere 904 is driven to reset and rotate. Through the reset and rotation of the sphere 904, the apertures communicating with each other between the through hole 905 on the sphere 904 and the fixed tube 602 and the nozzle 902 are reduced. By reducing the apertures communicating with each other, the pressure of the spray liquid on the nozzle 902 is increased to avoid insufficient pressure, which causes the potassium permanganate solution to fail to reach the surface of the wrapping paper or uneven distribution when reaching the surface of the wrapping paper, resulting in some areas of the wrapping paper not being coated with the potassium permanganate solution or a large difference in coating thickness, thereby further ensuring the back-coating effect of the potassium permanganate solution on the wrapping paper.

[0072] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke discoloration packaging paper processing process, characterized in that: The following steps are involved: S1: Weakly acidic substances are mixed, and Acid A, Acid B and Acid C are weighed. Acid A is used to neutralize nicotine, Acid B is responsible for color development, and Acid C creates an acidic environment for redox reaction. The weighed weakly acidic substances are added to a mixed solvent of water, alcohol and propylene glycol, and stirred to mix evenly to form an acidic solution; S2: Preparation of potassium permanganate solution: weigh potassium permanganate crystals to prepare a 0.8‰ potassium permanganate solution, add water to the potassium permanganate crystals, and stir until no undissolved crystal particles remain; S3: Packaging paper coating processing, pouring the prepared acid solution into the coating equipment, starting the coating machine, and evenly coating the acid solution on the inner layer of the tipping paper; S4: Back coating with potassium permanganate solution: inject 0.8‰ potassium permanganate solution into the liquid storage tank of the back coating equipment, start the back coating component, and evenly coat the potassium permanganate solution on the back surface of the tipping paper; S5: Drying the coated packaging paper using a hot air dryer; S6: Appearance inspection: Use visual inspection to check whether there are scratches, wrinkles, color difference, spots and other defects on the surface of the packaging paper.

2. A smoke discoloration packaging paper processing equipment, applied to the smoke discoloration packaging paper processing technology described in claim 1, characterized in that: include: A back coating machine box (101), wherein both sides of the back coating machine box (101) are respectively provided with a feed inlet (102) and a discharge outlet (103), a storage tank (104) for storing potassium permanganate solution is installed at the upper end of the back coating machine box (101), a conveying assembly for conveying packaging paper is arranged on the back coating machine box (101), the conveying assembly is symmetrically arranged in two groups, and the two groups of conveying assemblies are connected and transmitted by a transmission assembly, a liquid discharge assembly for auxiliary liquid discharge is arranged inside the back coating machine box (101), and a purifier (12) for treating waste gas is installed at the upper end of the back coating machine box (101); The liquid discharge component comprises a lifting plate (601) arranged inside the back coating machine box (101), a fixed pipe (602) is fixed on the lifting plate (601), a delivery pump for pumping and delivering is installed at the lower end of the storage tank (104), a hose (603) is connected between the fixed pipe (602) and the liquid outlet end of the delivery pump, a lifting component for lifting and lowering the lifting plate (601) and a guide component for guiding during the lifting process are arranged inside the back coating machine box (101), and a control component for controlling the discharge pressure is arranged at the front end of the fixed pipe (602); The control component includes a control cylinder (901) which is connected and fixed to the front end of the fixed tube (602), and a nozzle (902) is fixed to the front end of the control cylinder (901). The control cylinder (901) is internally rotatably connected to a spherical groove (903), and a ball (904) is rotatably connected to the spherical groove (903). The ball (904) is provided with a through hole (905) for assisting communication with the fixed tube (602) and the nozzle (902). The back coating machine box (101) is internally provided with a rotating component for rotating the ball (904) during the lifting process.

3. The smoke discoloration packaging paper processing equipment according to claim 2, characterized in that: The rotating assembly comprises a rotating shaft (1001) rotatably connected to a control cylinder (901), one end of the rotating shaft (1001) is fixed to a sphere (904), a third gear (1002) is fixed to the other end of the rotating shaft (1001), a rack (1003) is fixed inside the back coating machine box (101) via a plurality of mounting rods (1004), and the third gear (1002) and the rack (1003) are meshed with each other.

4. The smoke discoloration packaging paper processing equipment according to claim 2, characterized in that: The lifting assembly includes a threaded rod (701) rotatably connected to a lifting plate (601), a threaded tube (702) being threadedly engaged with the threaded rod (701), one end of the threaded tube (702) being fixed to the inside of a back coating machine box (101), and a driving motor (703) for driving the threaded rod (701) being installed on the lifting plate (601).

5. The smoke discoloration packaging paper processing equipment according to claim 4, characterized in that: The guide assembly comprises a sleeve (801) fixed inside the back coating machine box (101), a slide rod (802) is slidably connected to the sleeve (801), and one end of the slide rod (802) is fixed to the lifting plate (601).

6. The smoke discoloration packaging paper processing equipment according to claim 2, characterized in that: The conveying assembly comprises two groups of connecting shafts (201) rotatably connected to a back coating machine box (101); conveying rollers (202) for driving against packaging paper are fixed to the two groups of connecting shafts (201); a driving assembly for driving the connecting shafts (201) is arranged on the outer side of the back coating machine box (101); and the two groups of connecting shafts (201) are connected and driven via a linkage assembly.

7. The smoke discoloration packaging paper processing equipment according to claim 6, characterized in that: The linkage assembly comprises a first gear (301) and a second gear (302) respectively fixed to one end of two sets of connecting shafts (201), and the first gear (301) and the second gear (302) are meshed with each other.

8. The smoke discoloration packaging paper processing equipment according to claim 6, characterized in that: The transmission assembly comprises a pulley (501) fixed to one end of a connecting shaft (201), and the pulleys (501) on two groups of the conveying assemblies are connected and driven via a belt (502).

9. The smoke discoloration packaging paper processing equipment according to claim 6, characterized in that: The driving assembly comprises an L-shaped frame (401) fixed to the outside of the back coating machine box (101), and a mounting motor (402) for driving the connecting shaft (201) is mounted on the L-shaped frame (401).

10. The smoke discoloration packaging paper processing equipment according to claim 1, characterized in that: The storage tank (104) is provided with a stirring assembly for stirring the potassium permanganate solution, the stirring assembly comprising a stirring shaft (1101) rotatably connected to the interior of the storage tank (104), a stirring impeller (1102) being fixed to the stirring shaft (1101), and an operating motor (1103) for driving the stirring shaft (1101) is installed at the upper end of the storage tank (104).

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