Glue solution smearing device capable of conveniently cleaning dust of paper machine sizing machine

Abstract

The invention discloses a glue solution smearing device facilitating cleaning of dust of a paper machine glue applicator, and relates to the technical field of glue applicator dedusting, the glue solution smearing device comprises a basic mechanism, a dust collection and decontamination mechanism and a swing dust collection mechanism are arranged at the upper end of a support, and the swing dust collection mechanism is arranged on the sides, close to each other, of the dust collection and decontamination mechanism; the dust suction and dirt removal mechanism is used for continuously sucking and removing dust adhered to the outermost side of an adhesive layer on the outer surface of the roller shaft when the roller shaft rotates; the swing dust collection mechanism is used for assisting the dust collection and decontamination mechanism in adsorbing dust in air in a working area when the basic mechanism is used for sizing, sucking and removing glue on the outermost layer of a rotary sizing layer and automatically discharging the glue, so that the dust adhered to the glue layer is removed, the cleanness of the glue before sizing is ensured, the sizing quality is ensured, and the production efficiency is improved. And meanwhile, dust near a sizing area is continuously sucked by utilizing suction force in the piston box I, so that a good working environment of the sizing machine in the sizing process is ensured, and the sizing quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal for sizing machines, and particularly to a sizing liquid coating device for facilitating the cleaning of dust on a paper machine sizing machine. Background Art

[0002] Paper is prone to damage such as mildew in a humid environment, which greatly reduces the quality and service life of the paper. With the improvement of the technical level of the paper-making industry, people have put forward higher requirements for the surface performance, strength and water resistance of paper. Additives that can improve the performance of the paper sheet or increase the water resistance of the paper or cardboard can be added to apply sizing to the paper surface. Sizing is generally completed by a sizing machine. Through a series of physical actions such as infiltration, penetration and extrusion, technical indicators such as the transverse ring crush index and the longitudinal breaking length of the paper are improved.

[0003] During the sizing process of the sizing machine, the paper passes between two rollers, and the sizing on the surface of the rollers is evenly applied to both surfaces of the paper by the extrusion of the rollers. In this process, the rollers rotate at high speed, and the high-speed rotation of the rollers will generate a pressure difference around, thereby generating suction to make the sizing layer covered with dust. Moreover, there may be fibers or dust on the paper surface that are adsorbed by the rollers on the sizing surface, which will reduce the quality of the paper.

[0004] During the sizing process of the sizing machine, the sizing on the surface of the rollers and the paper to be sized are both exposed. Moreover, the air flow around the rollers has a greater velocity due to the pressure difference during rotation, and the dust near the rollers will be stirred by the rotation of the rollers, which will increase the speed of dust dispersion and make the dust removal work more difficult. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the above-mentioned drawbacks of the prior art, the present invention provides a sizing liquid coating device for facilitating the cleaning of dust on a paper machine sizing machine, which can effectively solve the problems in the prior art that the paper is easily adhered with dust, resulting in a reduction in the quality of the paper, and the dust is still easily dispersed and pollutes the paper.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention is realized through the following technical solutions.

[0009] The present invention discloses a sizing agent coating device for facilitating the cleaning of dust on a paper machine sizing machine, including a basic mechanism. The basic mechanism includes a bracket and a roller shaft. There are two roller shafts, which are rotatably connected to the inside of the upper end of the bracket. Spray nozzles are installed on both the front and rear sides of the bracket, and each spray nozzle is in contact with the outer surface of the roller shaft. A dust suction and decontamination mechanism and a swing dust suction mechanism are respectively arranged at the upper end of the bracket. The dust suction and decontamination mechanism is arranged between the two roller shafts, the swing dust suction mechanism is arranged adjacent to the dust suction and decontamination mechanism, and the swing dust suction mechanism is respectively arranged on one side of the dust suction and decontamination mechanism close to the end of the roller shaft;

[0010] The dust suction and decontamination mechanism is used to continuously suck the dust adhered to the outermost side of the glue layer on the outer surface of the roller shaft when the roller shaft rotates;

[0011] The swing dust suction mechanism is used to assist the dust suction and decontamination mechanism in adsorbing and treating the dust in the air in the working area during sizing of the basic mechanism.

[0012] Furthermore, the dust suction and decontamination mechanism includes piston boxes I respectively fixedly connected to both sides of the top of the bracket. A slide plate is hermetically and slidably connected inside the piston box I. The slide plate divides the piston box I into two parts. The upper space of the slide plate in the piston box I is set as a liquid cavity, and the lower space of the slide plate in the piston box I is set as an air cavity. Both ends of the roller shaft at the topmost part of the bracket are fixedly connected with a lever. The lower surface of the slide plate is fixedly connected with a slide rod. Each slide rod is slidably connected inside the piston box I and extends below the piston box I. One-way valves I are fixedly connected to both sides of the piston box I away from each other, and the one-way valves I are communicated with the air cavity. The lower end of the slide rod is fixedly connected with a channel-shaped plate, and the lever is slidably connected to the inner wall of the channel-shaped plate. Hard tubes are fixedly connected to both the front and rear sides of the piston box I at the right end of the bracket.

[0013] Furthermore, a glue suction cylinder is fixedly connected between the two hard tubes. The inside of the glue suction cylinder is communicated with the hard tubes. One-way valves II are arranged at the joints of the hard tubes and the piston box I inside the piston box I. The one-way valves II are fixedly connected to the inner wall of the piston box I and communicated with the hard tubes. The hard tubes are communicated with the piston box I through the one-way valves II. A drainage column is rotatably connected inside the glue suction cylinder. Drainage plates are fixedly connected to the outer surface of the drainage column. The drainage plates are communicated with the inside of the drainage column. One end of the drainage plate close to the roller shaft is communicated with the outside through the glue suction cylinder. Each drainage column is communicated with the inside of the hard tube. A screwing ring is rotatably connected to one end of each glue suction cylinder away from the hard tube inside each glue suction cylinder. Each screwing ring is respectively rotatably connected to the drainage column.

[0014] Furthermore, the swing dust suction mechanism includes piston boxes II fixedly connected to the surfaces of the piston boxes I close to each other. The inside of each piston box II is communicated with the liquid cavity.

[0015] Further, a sliding toothed plate is hermetically and slidably connected inside each of the second piston boxes. A toothed rod is fixedly connected to the lower surface of each sliding toothed plate. Each toothed rod is slidably connected inside the second piston box and extends below the second piston box.

[0016] Further, a rotating plate is provided on the outer surface of each roller shaft. Each rotating plate semi-covers the outer surface of the roller shaft. Each glue extraction cylinder is located between two roller shafts and two rotating plates. The two end rods of each rotating plate are rotatably connected to the opposite sides of the two first piston boxes.

[0017] Further, the rod part of each rotating plate is meshed and connected with the toothed rod. A hose is fixedly connected to the upper surface of the middle part of each rotating plate. Each hose is communicated with the inner air cavity of the two first piston boxes.

[0018] Further, a check valve three is provided at the connection of each hose and the two first piston boxes. Each check valve three is fixedly connected to the inner wall of the first piston box. Each air cavity is communicated through four check valves three and two hoses.

[0019] (III) Advantageous Effects

[0020] Adopting the technical solution provided by the present invention, compared with the known prior art, it has the following advantageous effects:

[0021] 1. By providing a dust suction and dirt removal mechanism, the rotational force generated by the rotation of the roller shaft itself is used to provide rotational force for the first piston box, and the reciprocating movement of the sliding plate is pushed or pulled by means of the air pressure difference generated in the first piston box. After generating air pressure in the first piston box, suction is generated for the passage connected to the groove-shaped plate, and the glue on the outermost layer of the glue application layer during rotation is sucked and automatically discharged, thereby removing the dust adhered to the glue application layer, ensuring the cleanliness of the glue before glue application, and ensuring the quality of glue application.

[0022] 2. By providing a swinging dust suction mechanism, the pressure difference generated in the first piston box is used to synchronously bring a pressure difference into the second piston box. The swinging force is generated by using the pressure difference in the second piston box, and at the same time, the suction force is generated by using the pressure difference generated in the first piston box. The swinging rotating plate continuously sucks the dust near the glue application area, ensuring a good working environment during the glue application process of the glue applicator, thereby improving the quality of glue application.

[0023] 3. By providing a screwing ring, glues with different viscosities may be encountered during the glue application process. The suction force of the dust suction and dirt removal mechanism for sucking the glue can be better controlled. The screwing ring is used to screw the drainage column to drive the drainage plate to switch the notches with different diameters, so as to ensure that the sucked glue will not be excessive or there will be insufficient suction force, thereby avoiding waste. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 Isometric structure diagram of the present invention;

[0026] Figure 2 Isometric structure diagram of another angle of the present invention;

[0027] Figure 3 Isometric structure diagram of the roller shaft and the glue extraction cylinder in the present invention;

[0028] Figure 4 Isometric structure diagram of the rotating plate and the hose in the present invention;

[0029] Figure 5 Cross-sectional structure diagram of the interior of piston box one in the present invention;

[0030] Figure 6 Cross-sectional structure diagram of the glue extraction cylinder and the drainage column in the present invention;

[0031] Figure 7 Cross-sectional structure diagram of the rotating plate and the hose in the present invention;

[0032] Figure 8 Cross-sectional structure diagram of the interior of piston box two in the present invention.

[0033] The reference numerals in the figure respectively represent: 1, basic mechanism; 101, bracket; 102, roller shaft; 103, nozzle;

[0034] 2, dust suction and dirt removal mechanism; 201, piston box one; 202, slide plate; 203, liquid cavity; 204, air cavity; 205, lever; 206, slide bar; 207, check valve one; 208, trough-shaped plate; 209, rigid pipe; 210, glue extraction cylinder; 211, drainage column; 212, drainage plate; 213, screw ring; 214, check valve two;

[0035] 3, swing dust suction mechanism; 301, piston box two; 302, sliding tooth plate; 303, rack; 304, rotating plate; 305, hose; 306, check valve three. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0037] The present invention will be further described below in conjunction with embodiments:

[0038] A glue coating device for facilitating the cleaning of dust on a paper machine sizing machine in this embodiment is as Figure 1 - Figure 8 shown, and includes a basic mechanism 1. The basic mechanism 1 includes a bracket 101 and a roller 102. There are two rollers 102, and the rollers 102 are rotatably connected to the inside of the upper end of the bracket 101. Nozzles 103 are installed on both the front and rear sides of the bracket 101, and each nozzle 103 is in contact with the outer surface of the roller 102. A dust suction and dirt removal mechanism 2 and a swing dust suction mechanism 3 are respectively arranged at the upper end of the bracket 101. The dust suction and dirt removal mechanism 2 is arranged between the two rollers 102, the swing dust suction mechanism 3 is arranged adjacent to the dust suction and dirt removal mechanism 2, and the swing dust suction mechanism 3 is respectively arranged on one side of the dust suction and dirt removal mechanism 2 close to the end of the roller 102;

[0039] The dust suction and dirt removal mechanism 2 is used to continuously suck the dust adhered to the outermost side of the glue layer on the outer surface of the roller 102 when the roller 102 rotates;

[0040] The dust suction and dirt removal mechanism 2 includes piston boxes one 201 respectively fixedly connected to both sides of the top end of the bracket 101. Inside the piston box one 201, there is a slide plate 202 in sealed sliding connection. The slide plate 202 divides the piston box one 201 into two parts. The upper space of the slide plate 202 in the piston box one 201 is set as the liquid cavity 203, and the lower space of the slide plate 202 in the piston box one 201 is set as the air cavity 204. At both ends of one of the roller shafts 102 at the uppermost part of the bracket 101, there are toggle rods 205 fixedly connected. The lower surface of the slide plate 202 is fixedly connected with a slide rod 206. Each slide rod 206 is slidably connected inside the piston box one 201 and extends below the piston box one 201. On both sides of the piston box one 201 that are far away from each other, there is a one-way valve one 207 fixedly connected, and the one-way valve one 207 is communicated with the air cavity 204. The lower end of the slide rod 206 is fixedly connected with a channel-shaped plate 208, and the toggle rod 205 is slidably connected with the inner wall of the channel-shaped plate 208. On the front and rear sides of the piston box one 201 at the right end of the bracket 101, there are hard pipes 209 fixedly connected. Between the two hard pipes 209, there is a glue suction cylinder 210 fixedly connected. The inside of the glue suction cylinder 210 is communicated with the hard pipes 209. At the connection of the hard pipes 209 inside the piston box one 201 and the piston box one 201, there are one-way valves two 214 provided. The one-way valves two 214 are fixedly connected to the inner wall of the piston box one 201 and are communicated with the hard pipes 209. The hard pipes 209 are communicated with the piston box one 201 through the one-way valves two 214. Inside the glue suction cylinder 210, there is a drainage column 211 rotatably connected. On the outer surface of the drainage column 211, there is a drainage plate 212 fixedly connected. The drainage plate 212 is communicated with the inside of the drainage column 211. One end of the drainage plate 212 close to the roller shaft 102 is communicated with the outside through the glue suction cylinder 210. Each drainage column 211 is communicated with the inside of the hard pipe 209. At one end of each glue suction cylinder 210 away from the hard pipe 209 inside, there is a screwing ring 213 rotatably connected. Each screwing ring 213 is respectively rotatably connected with the drainage column 211;

[0041] Compared with the prior art, the air pressure difference inside the piston box one 201 is used to provide the force for the reciprocating movement of the slide plate 202, and the suction or thrust is generated by the slide plate 202. When the suction is generated, the one-way valve one 207 is closed, and the suction will act on the outer surface of the roller shaft 102, so as to suck the glue and dust on the outer layer of the glue layer on the roller shaft 102, and when the slide plate 202 generates thrust, the one-way valve one 207 is opened and the glue with dust is discharged, ensuring the quality of the glue applied to the paper surface.

[0042] As Figure 4 and Figure 8 shown, the swinging dust suction mechanism 3 is used to assist the dust suction and dirt removal mechanism 2 to adsorb and process the dust in the air in the working area of the basic mechanism 1 during glue application;

[0043] The swing dust suction mechanism 3 includes a second piston box 301 fixedly connected to the surface of the first piston box 201 close to each other. The interior of each second piston box 301 is communicated with the liquid cavity 203. A sliding toothed plate 302 is hermetically and slidably connected inside each second piston box 301. A toothed rod 303 is fixedly connected to the lower surface of each sliding toothed plate 302. Each toothed rod 303 is slidably connected inside the second piston box 301 and extends below the second piston box 301. A rotating plate 304 is arranged on the outer surface of each roller shaft 102. Each rotating plate 304 semi-wraps the outer surface of the roller shaft 102. Each glue extraction cylinder 210 is located between two roller shafts 102 and two rotating plates 304. The two end rods of each rotating plate 304 are rotatably connected to the opposite sides of the two first piston boxes 201. The rod part of each rotating plate 304 is meshed and connected with the toothed rod 303. A hose 305 is fixedly connected to the upper surface of the middle part of each rotating plate 304. Each hose 305 is communicated with the air cavity 204 inside the two first piston boxes 201. A check valve three 306 is arranged at the connection of each hose 305 and the two first piston boxes 201. Each check valve three 306 is fixedly connected to the inner wall of the first piston box 201. Each air cavity 204 is communicated through four check valves three 306 and two hoses 305;

[0044] Compared with the prior art, the interior of the second piston box 301 is communicated with the interior of the upper end of the first piston box 201. The inner suction force of the first piston box 201 is used to provide suction and thrust for the second piston box 301, so that the toothed rod 303 drives the rotating plate 304 to swing around the gluing area of the gluer during sliding, and the suction force inside the first piston box 201 is applied to the two surfaces of the rotating plate 304, further providing a cleaning effect for the gluing working environment.

[0045] Working principle: Before the gluer glues the paper, conventional gluing preparation work is done. When gluing starts, the roller shaft 102 rotates at the upper end inside the bracket 101. The roller shaft 102 rotates continuously. Since there is inevitably dust in the air, the surrounding air flow is stirred, and a pressure difference is generated near the outer surface of the roller shaft 102, so that a pressure difference is generated on the outer surface of the roller shaft 102. The pressure difference will stir the dust around the roller shaft 102 and make it disperse at a faster speed. The dust near the surface of the roller shaft 102 will be attracted by the pressure difference, and the dust will be sucked onto the glue on the outer surface of the roller shaft 102 and adhered by it;

[0046] During the rotation of the roller 102, the lever rods 205 at both ends of the roller 102 are driven to rotate. The lever rods 205 rotate within the grooved plate 208. The lever rods 205 continuously rotate and drive the grooved plate 208 to reciprocate, thereby causing the slide rod 206 to perform reciprocating motion. The slide plate 202 is synchronously driven by the slide rod 206 to slide inside the first piston box 201. When the slide plate 202 slides inside the first piston box 201, an air pressure difference begins to be generated inside the first piston box 201. When the slide plate 202 slides upward, a negative pressure is generated in the air chamber 204 inside the first piston box 201. At this time, the first one-way valve 207 is in a closed state, while the second one-way valve 214 is in an open state. The suction force inside the first piston box 201 is applied to the glue on the outermost layer of the glue layer on the outer surface of the roller 102 through the rigid tube 209. As the slide plate 202 continuously slides upward following the rotation of the lever rod 205, the glue on the outermost layer of the glue layer on the outer surface of the roller 102 is continuously sucked off. And the outermost layer of the glue layer is the surface layer in contact with the dust, and the dust also follows the glue layer and is sucked off, and enters the air chamber 204 through the rigid tube 209. After the sliding process of the slide plate 202 ends, it starts to slide downward. At this time, pressure is generated inside the air chamber 204. The second one-way valve 214 is pushed by the pressure generated inside the air chamber 204 to close, while the first one-way valve 207 is pushed open by the pressure generated inside the air chamber 204. As the slide plate 202 continuously slides downward, the pressure generated inside the air chamber 204 at this time is continuously compressed, and the glue with dust sucked into the air chamber 204 is extruded out of the air chamber 204 through the first one-way valve 207;

[0047] During the continuous sliding process of the slide plate 202, the pressure difference synchronously generated in the first piston box 201 is applied inside the second piston box 301 connected to it. The sliding gear plate 302 is driven by the air pressure difference inside the second piston box 301 to slide inside the second piston box 301, and expands and contracts synchronously following the sliding process of the slide plate 202. When the sliding gear plate 302 slides downward, the toothed rod 303 is synchronously driven to slide inside the second piston box 301. The toothed rod 303 drives the rotating plate 304 to rotate on the side where the two first piston boxes 201 are close to each other. The rotating plate 304 swings around the roller 102 under the reciprocating drive of the toothed rod 303. The rotating plate 304 is connected to the inside of the air chamber 204 through the third one-way valve 306. When the slide plate 202 slides upward to generate suction force inside the air chamber 204, the third one-way valve 306 is opened, and the dust near the swinging range of the rotating plate 304 is sucked into the air chamber 204 through the flexible tube 305. And when the slide plate 202 slides upward, pressure is generated inside the air chamber 204, and the dust carried in the gas is synchronously mixed into the air chamber 204. And as the slide plate 202 slides downward, the generated pressure pushes all the glue and the carried dust out of the air chamber 204 through the first one-way valve 207;

[0048] The drainage column 211 rotatably connected inside the glue extraction cylinder 210 can change different groove diameters according to the rotation of the screwing ring 213, and can adjust the suction force according to the resistance of glue with different viscosities, ensuring that the glue on the outer layer of the surface of the roller 102 will not be wasted and the situation of incomplete dust suction will not occur.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A sizing liquid coating device for facilitating the cleaning of dust on a paper machine sizing machine, comprising a basic mechanism (1), the basic mechanism (1) includes a bracket (101) and a roller shaft (102), there are two roller shafts (102), the roller shafts (102) are rotatably connected to the inside of the upper end of the bracket (101), spray heads (103) are installed on both the front and rear sides of the bracket (101), and each spray head (103) is in contact with the outer surface of the roller shaft (102), characterized in that, At the upper end of the bracket (101), a dust suction and decontamination mechanism (2) and a swing dust suction mechanism (3) are respectively arranged. The dust suction and decontamination mechanism (2) is arranged between two roller shafts (102). The swing dust suction mechanism (3) is arranged adjacent to the dust suction and decontamination mechanism (2), and the swing dust suction mechanism (3) is respectively arranged on one side of the dust suction and decontamination mechanism (2) close to the end of the roller shaft (102). The dust suction and decontamination mechanism (2) is used for continuously sucking the dust adhered to the outermost side of the glue layer on the outer surface of the roller shaft (102) when it rotates. The swing dust suction mechanism (3) is used to assist the dust suction and decontamination mechanism (2) in adsorbing the dust in the air in the working area during glue application of the basic mechanism (1).

2. The sizing liquid coating device for facilitating the cleaning of dust of a paper machine sizing machine according to claim 1, wherein The dust suction and decontamination mechanism (2) includes a first piston box (201) respectively fixedly connected to both sides of the top end of the bracket (101). A slide plate (202) is hermetically and slidably connected inside the first piston box (201). The slide plate (202) divides the first piston box (201) into two parts. The space above the slide plate (202) in the first piston box (201) is set as a liquid cavity (203), and the space below the slide plate (202) in the first piston box (201) is set as an air cavity (204). Both ends of the uppermost roller shaft (102) of the bracket (101) are fixedly connected with a lever (205). A slide rod (206) is fixedly connected to the lower surface of the slide plate (202). Each slide rod (206) is slidably connected inside the first piston box (201) and extends below the first piston box (201). One-way valves (207) are respectively fixedly connected to the mutually remote sides of the first piston box (201), and the one-way valves (207) are communicated with the air cavity (204). A groove-shaped plate (208) is fixedly connected to the lower end of the slide rod (206). The lever (205) is slidably connected to the inner wall of the groove-shaped plate (208). Hard tubes (209) are respectively fixedly connected to the front and rear sides of the first piston box (201) at the right end of the bracket (101).

3. The sizing liquid coating device for facilitating the cleaning of dust on a paper machine sizing machine according to claim 2, wherein, A glue extraction cylinder (210) is fixedly connected between the two rigid tubes (209). The inside of the glue extraction cylinder (210) is in communication with the rigid tubes (209). Check valves II (214) are provided at the joints between the rigid tubes (209) inside the first piston chamber (201) and the first piston chamber (201). The check valves II (214) are fixedly connected to the inner wall of the first piston chamber (201) and are in communication with the rigid tubes (209). The rigid tubes (209) are in communication with the first piston chamber (201) through the check valves II (214). A drainage column (211) is rotatably connected inside the glue extraction cylinder (210). Drainage plates (212) are fixedly connected to the outer surface of the drainage column (211). The drainage plates (212) are in communication with the inside of the drainage column (211). One end of the drainage plate (212) close to the roller shaft (102) is in communication with the outside through the glue extraction cylinder (210). Each drainage column (211) is in communication with the inside of the rigid tube (209). A screwing ring (213) is rotatably connected to one end of each glue extraction cylinder (210) away from the rigid tube (209). Each screwing ring (213) is respectively rotatably connected to the drainage column (211).

4. A sizing liquid coating device for facilitating the cleaning of dust in a paper machine sizing machine, characterized in that, The swing dust suction mechanism (3) includes a second piston chamber (301) fixedly connected to the adjacent side surfaces of the first piston chamber (201). The inside of each second piston chamber (301) is in communication with the liquid chamber (203).

5. The sizing liquid coating device for facilitating the cleaning of dust of a paper machine size press according to claim 4, characterized in that, A sliding tooth plate (302) is hermetically and slidably connected inside each second piston chamber (301). A toothed rod (303) is fixedly connected to the lower surface of each sliding tooth plate (302). Each toothed rod (303) is slidably connected inside the second piston chamber (301) and extends below the second piston chamber (301).

6. The sizing agent coating device for facilitating the cleaning of dust of a paper machine sizing machine according to claim 5, characterized in that, A rotating plate (304) is provided on the outer surface of each roller shaft (102). Each rotating plate (304) semi - wraps the outer surface of the roller shaft (102). Each glue extraction cylinder (210) is located between two roller shafts (102) and two rotating plates (304). The two end rods of each rotating plate (304) are rotatably connected to the opposite sides of the two first piston chambers (201).

7. The sizing liquid coating device for facilitating the cleaning of dust of a paper machine size press according to claim 6, characterized in that, The rod part of each rotating plate (304) is meshed with the toothed rod (303). A flexible tube (305) is fixedly connected to the upper surface of the middle part of each rotating plate (304). Each flexible tube (305) is in communication with the air chamber (204) inside the two first piston chambers (201).

8. An adhesive coating device for facilitating the cleaning of dust in a paper machine sizing machine according to claim 7, characterized in that, Check valves III (306) are provided at the joints between each flexible tube (305) and the two first piston chambers (201). Each check valve III (306) is fixedly connected to the inner wall of the first piston chamber (201). The air chamber (204) is in communication with the flexible tube (305) through the check valve III (306).

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