A dust removal and air purification device for plywood processing

Abstract

The application discloses a dust removal and air purification device for plywood processing and relates to the technical field of plywood processing.The device comprises a cylinder, a blow mechanism for reducing blockage is arranged in the cylinder, a scraping mechanism is arranged on the top of the blow mechanism, a collision mechanism for reducing blockage is arranged above the scraping mechanism, and a blocking mechanism for reducing dust diffusion is arranged on the inner bottom surface of the cylinder.The blow mechanism is arranged to efficiently dredge filter plate pores.High-pressure airflow is blown to the filter plate through the air holes on the U-shaped communication pipe, fine dust attached to the filter plate micropores is blown away and removed, and the micropores are prevented from being blocked to cause the air permeability to decrease.The linkage structure of the swing rod and the sliding block is used to reciprocatingly swing the blow pipeline under the drive of the motor, so that the blow position of the air hole is continuously moved on the filter plate surface, the cleaning range is expanded, the filter plate is ensured to have high permeability, and the continuous processing capacity of the dust removal device is improved.

Description

Technical Field

[0001] This invention relates to the field of plywood processing technology, specifically to a dust removal and air purification device for plywood processing. Background Technology

[0002] During the actual production and processing of plywood, especially in processes such as sawing, milling, and sanding, a large amount of wood chips, dust, and fine particles of different sizes are generated. These solid particles not only seriously pollute the working environment of the production workshop and endanger the respiratory health of operators, but may also cause safety hazards due to dust accumulation.

[0003] Currently, the common practice for dealing with dusty exhaust gas generated during plywood processing is to introduce the dusty airflow from the processing equipment into a dust collector through ducts, and then use multi-stage filtration devices (such as cyclone separators, bag filters, or cartridge filters) to purify the airflow in order to meet emission standards.

[0004] However, during long-term operation, as filtration continues, dust and impurities gradually accumulate on the surface of the filter plates, causing the filter pores to become clogged. This clogging not only increases airflow resistance, reducing the purification efficiency and processing capacity of the dust removal device, but also shortens the cleaning and maintenance cycle, increasing the operating and maintenance costs of the equipment.

[0005] Therefore, the present invention proposes a dust removal and air purification device for plywood processing to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0006] In view of the above problems, the present invention provides a dust removal and air purification device for plywood processing, which can effectively solve the problem of reduced filtration efficiency caused by clogging of filter equipment in the prior art. To achieve the above objective, the embodiments of this application provide the following technical solutions:

[0007] This invention discloses a dust removal and air purification device for plywood processing, including a cylinder. The cylinder is equipped with an air blowing mechanism to reduce clogging, a scraping mechanism is provided at the top of the air blowing mechanism, an impact mechanism to reduce clogging is provided above the scraping mechanism, and a barrier mechanism to reduce dust diffusion is provided on the bottom surface of the cylinder.

[0008] The air blowing mechanism includes a filter plate fixedly connected inside a cylinder. A hollow circular tube is also horizontally rotatably connected inside the cylinder. U-shaped connecting pipes are symmetrically fixedly connected to the outside of the hollow circular tubes, and the U-shaped connecting pipes are interconnected with the hollow circular tubes. Each U-shaped connecting pipe has an air hole on its outside. Both ends of the hollow circular tube extend to the outside of the cylinder. An air pump is fixedly connected to the outside of the cylinder. A pneumatic rotary joint is rotatably sleeved at one end of the hollow circular tube. The stationary end of the pneumatic rotary joint is connected to the air outlet of the air pump through an air pipe. The rotating end of the pneumatic rotary joint is connected to the extended end of the hollow circular tube and swings synchronously with it.

[0009] Furthermore, a swing rod is fixedly connected to the end of the hollow tube away from the air pump, and a sliding groove is opened at the end of the swing rod away from the hollow tube, with a slider slidably connected inside the sliding groove.

[0010] Furthermore, a drive shaft is rotatably connected inside the cylinder, with both ends of the drive shaft extending to the outside of the cylinder. A motor is also fixedly connected to the outside of the cylinder, with the output end of the motor fixedly connected to one end of the drive shaft. A connecting rod is fixedly connected to the other end of the drive shaft, and the end of the connecting rod away from the drive shaft is fixedly connected to the side of the slider.

[0011] Furthermore, an air inlet pipe for entering the cylinder with exhaust gas and dust is fixedly connected to the bottom side of the cylinder, and a ventilated cover for discharging filtered airflow from the cylinder is fixedly connected to the top of the cylinder.

[0012] Furthermore, the scraping mechanism includes a rotating shaft vertically rotatably connected to the center of the filter plate. The filter plate has a central through hole in the center, and a flange bearing with a dustproof sealing ring is fixedly embedded in the central through hole. The rotating shaft is inserted into and fixed in the inner ring of the flange bearing to achieve a rotational dynamic sealing connection between the rotating shaft and the filter plate. Sleeves are symmetrically fixedly connected to the side of the rotating shaft. A sliding rod is slidably connected in the cavity at the end of the sleeve away from the rotating shaft. A scraper is fixedly connected to the end of the sliding rod away from the sleeve, and the scraper is slidably connected to the inner wall of the cylinder.

[0013] Furthermore, a first bevel gear is fixedly connected to the top of the rotating shaft, and a second bevel gear is fixedly connected to the outside of the transmission shaft, with the second bevel gear meshing with the first bevel gear.

[0014] Furthermore, a compression spring is provided in the sleeve cavity. One end of the compression spring is fixedly connected to the inner wall of the sleeve cavity, and the other end of the compression spring is fixedly connected to the side of the slide rod. Multiple protrusions are also fixedly connected at equal intervals to the inner wall of the cylinder, and the protrusions are slidably connected to the side of the scraper.

[0015] Furthermore, the impact mechanism includes fixed plates symmetrically fixedly connected to the side of the rotating shaft. Each fixed plate is rotatably connected to a deflection rod on its side. An impact block is fixedly connected to the bottom of the deflection rod. Under normal conditions, there is a safety gap between the bottom of the impact block and the upper surface of the filter plate. An annular hard impact washer is laid on the upper surface of the filter plate at the location corresponding to the movement trajectory of the impact block. When the torsion spring is released, the impact block moves downward across the safety gap and strikes the annular hard impact washer.

[0016] Furthermore, a torsion spring is sleeved on the outside of the deflection rod's shaft. One end of the torsion spring is fixedly connected to the side of the fixed plate, and the other end of the torsion spring is fixedly connected to the side of the deflection rod. A lever is fixedly connected to the end of the deflection rod away from the torsion spring. A wedge is also fixedly connected to the inner wall of the cylinder, and the inclined surface of the wedge is slidably connected to the bottom of the lever.

[0017] Furthermore, a collection bucket is slidably connected to the opening on the side of the cylinder, and a cover plate that closes the opening on the side of the cylinder is fixedly connected to the side of the collection bucket. In addition, inverted V-shaped inclined plates are symmetrically fixedly connected inside the collection bucket, and the gap between adjacent inclined plates forms a channel for dust to enter the collection bucket.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This device, equipped with an air-blowing mechanism, achieves efficient unblocking of the filter plate pores. High-pressure airflow is blown onto the filter plate through air holes in the U-shaped connecting pipe, dispersing and removing fine dust adhering to the micropores, preventing micropore blockage and subsequent decrease in air permeability. Combined with the linkage structure of the swing rod and slider, the air-blowing pipe reciprocates under motor drive, thereby continuously moving the air-blowing position on the filter plate surface, expanding the cleaning range, ensuring the filter plate maintains high permeability, and improving the continuous processing capacity of the dust removal device.

[0020] 2. This device is equipped with a scraping mechanism. The scraper rotates along the inner wall of the cylinder under the drive of the rotating shaft. With the synergistic action of the compression spring and the protrusion, the scraper produces a reciprocating motion of radial contraction and ejection when passing over the protrusion. It can scrape off the coarse dust layer with strong adhesion on the inner wall of the cylinder, and also prevent dust from accumulating on the inner wall of the cylinder, reducing the frequency and labor intensity of manual cleaning.

[0021] 3. This device is equipped with an impact mechanism. When the lever moves under the guidance of the inclined surface of the wedge block on the inner wall of the cylinder, the deflection rod will be lifted by force and then quickly fall back under the action of the torsion spring. This causes the impact block to periodically strike the upper surface of the filter plate. The vibration wave generated by the strike can loosen and remove stubborn dust that is difficult to blow away by airflow in the deep layers and gaps of the filter plate, thus enhancing the dust removal effect and avoiding the problem of increased filtration resistance caused by dust compaction.

[0022] 4. This device, through the installation of a barrier mechanism, achieves closed-loop collection and prevention of dust diffusion after cleaning. The inverted V-shaped inclined plate design prevents the cleaned dust from being re-raised and diffused into the upper space of the cylinder due to airflow disturbance. This ensures that the removed dust can quickly settle and be collected in the collection bin, avoiding secondary pollution, ensuring a clean and safe working environment, and facilitating subsequent centralized processing and recycling. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram from a first perspective in this invention.

[0025] Figure 2 This is a three-dimensional structural diagram from a second perspective in this invention.

[0026] Figure 3 In this invention Figure 2 Enlarged view of the structure at point A in the middle.

[0027] Figure 4 This is a three-dimensional structural diagram of the air blowing mechanism in this invention.

[0028] Figure 5 This is a longitudinal cross-sectional view of the cylinder in this invention.

[0029] Figure 6 This is a longitudinal cross-sectional view of the scraping mechanism and the impact mechanism in this invention.

[0030] Figure 7 In this invention Figure 6 Enlarged view of the structure at point B in the middle.

[0031] Figure 8 In this invention Figure 6 Enlarged view of the structure at point C.

[0032] Figure 9 This is a three-dimensional structural diagram of the barrier mechanism in this invention.

[0033] The labels in the diagram represent: 10, cylinder; 20, air blowing mechanism; 201, hollow cylindrical tube; 202, U-shaped connecting tube; 203, air hole; 204, air pump; 205, swing rod; 206, drive shaft; 207, motor; 208, connecting rod; 209, slide groove; 210, slider; 211, filter plate; 212, air inlet pipe; 213, ventilation hood; 30, scraping mechanism; 301, rotating shaft; 3 02. First bevel gear; 303. Second bevel gear; 304. Sleeve; 305. Slide rod; 306. Scraper; 307. Protrusion; 308. Compression spring; 40. Impact mechanism; 401. Fixed plate; 402. Deflection rod; 403. Impact block; 404. Torsion spring; 405. Wedge block; 406. Lever; 50. Blocking mechanism; 501. Collection bucket; 502. Inclined plate; 503. Cover plate. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to embodiments.

[0036] See Figures 1 to 9 This embodiment of a dust removal and air purification device for plywood processing includes a cylinder 10. The cylinder 10 is provided with an air blowing mechanism 20 to reduce clogging. The top of the air blowing mechanism 20 is provided with a scraping mechanism 30. Above the scraping mechanism 30, an impact mechanism 40 to reduce clogging is provided. The bottom surface of the cylinder 10 is provided with a barrier mechanism 50 to reduce dust diffusion.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The air blowing mechanism 20 includes a filter plate 211 fixedly connected inside the cylinder 10. A hollow circular tube 201 is also horizontally rotatably connected inside the cylinder 10. U-shaped connecting pipes 202 are symmetrically fixedly connected to the outside of the hollow circular tube 201, and the U-shaped connecting pipes 202 are interconnected with the hollow circular tube 201. Each U-shaped connecting pipe 202 has an air hole 203 on its outside. Both ends of the hollow circular tube 201 extend to the outside of the cylinder 10. An air pump 204 is fixedly connected to the outside of the cylinder 10. A pneumatic rotary joint is rotatably sleeved on one end of the hollow circular tube 201. The stationary end of the pneumatic rotary joint is connected to the air outlet of the air pump 204 through an air pipe. The rotating end of the pneumatic rotary joint is connected to the extended end of the hollow circular tube 201 and swings synchronously with it. By using a pneumatic rotary joint as a transitional connection between the air source pipeline and the swing pipeline, the torsional stress generated by the reciprocating swing of the hollow round tube 201 is absorbed, which solves the problems of kinking, metal fatigue and air leakage and breakage that are easy to occur in traditional direct connection of hose, and ensures the safety and stability of the air circuit system of the dust removal device under long-term high-intensity operation.

[0038] A swing rod 205 is fixedly connected to one end of the hollow tube 201 away from the air pump 204. A groove 209 is provided at one end of the swing rod 205 away from the hollow tube 201. A slider 210 is slidably connected inside the groove 209.

[0039] The cylinder 10 is also rotatably connected to a drive shaft 206, and both ends of the drive shaft 206 extend to the outside of the cylinder 10. A motor 207 is also fixedly connected to the outside of the cylinder 10. The output end of the motor 207 is fixedly connected to one end of the drive shaft 206, and the other end of the drive shaft 206 is fixedly connected to a connecting rod 208. The end of the connecting rod 208 away from the drive shaft 206 is fixedly connected to the side of the slider 210.

[0040] The cylinder 10 is fixedly connected to an air inlet pipe 212 for entering the cylinder 10 with exhaust gas and dust near the bottom, and the cylinder 10 is fixedly connected to a breathable cover 213 for discharging filtered airflow from the cylinder 10.

[0041] In actual operation, the waste gas and dust generated during plywood production are absorbed by the fan and enter the cylinder 10 through the inlet pipe 212. The waste gas is filtered at the bottom of the filter plate 211, and the dust is trapped. The clean gas is discharged from the vent 213 at the top of the cylinder 10. The discharged waste gas is then further treated. When filtering dust, the motor 207 is started, and the output end of the motor 207 drives the drive shaft 206 to rotate. One end of the drive shaft 206 is connected to a connecting rod 208. The rotating connecting rod 208 drives the slider 210 to reciprocate within the groove 209 of the swing rod 205, thereby converting the rotational motion into the reciprocating swing of the swing rod 205. The swing rod 205 drives the hollow circular tube 201, which is fixedly connected to it, to reciprocate within the cylinder 10. Meanwhile, the high-pressure airflow generated by the air pump 204 enters the hollow circular tube 201 through the hose and finally flows to the U-shaped connecting pipe 202. The high-pressure airflow is ejected at high speed from the air holes 203 on the surface of the U-shaped connecting pipe 202 and blown onto the filter plate 211. As the U-shaped connecting pipe 202 swings together with the hollow circular tube 201, the blowing position of the air holes 203 continuously moves on the surface of the filter plate 211. This achieves efficient dynamic unblocking of the pores of the filter plate 211. The reciprocating high-pressure airflow can blow away and remove the fine dust adhering to the micropores of the filter plate 211, preventing the decrease in air permeability caused by micropore blockage, ensuring that the filter plate 211 maintains a high permeability, and improving the continuous processing capacity of the dust removal device.

[0042] See Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 The scraping mechanism 30 includes a rotating shaft 301 vertically rotatably connected to the middle of the filter plate 211. The filter plate 211 has a central through hole in the middle, and a flange bearing with a dustproof sealing ring is fixedly embedded in the central through hole. The rotating shaft 301 is inserted into and fixed in the inner ring of the flange bearing to achieve a rotational dynamic sealing connection between the rotating shaft 301 and the filter plate 211. A sleeve 304 is symmetrically fixedly connected to the side of the rotating shaft 301. A sliding rod 305 is slidably connected in the cavity at the end of the sleeve 304 away from the rotating shaft 301. A scraper 306 is fixedly connected to the end of the sliding rod 305 away from the sleeve 304, and the scraper 306 is slidably connected to the inner wall of the cylinder 10.

[0043] A first bevel gear 302 is fixedly connected to the top of the rotating shaft 301, and a second bevel gear 303 is fixedly connected to the outside of the transmission shaft 206. The second bevel gear 303 meshes with the first bevel gear 302.

[0044] A compression spring 308 is provided in the cavity of the sleeve 304. One end of the compression spring 308 is fixedly connected to the inner wall of the cavity of the sleeve 304, and the other end of the compression spring 308 is fixedly connected to the side of the slide rod 305. A plurality of protrusions 307 are also fixedly connected at equal intervals to the inner wall of the cylinder 10, and the protrusions 307 are slidably connected to the side of the scraper 306.

[0045] In operation, as the drive shaft 206 rotates, the second bevel gear 303 on the drive shaft 206 meshes with the first bevel gear 302 at the top of the rotating shaft 301, thereby driving the rotating shaft 301 to rotate. The rotating shaft 301 drives the sleeve 304 and slide rod 305 fixed on its side to rotate together, causing the scraper 306 to make circular motion on the inner wall of the cylinder 10. When the scraper 306 rotates past the protrusion 307 fixed on the inner wall of the cylinder 10, the protrusion 307 will squeeze the scraper 306, causing the scraper 306 to drive the slide rod 305 to retract into the sleeve 304 against the elastic force of the compression spring 308. After the scraper 306 passes the protrusion 307, it will quickly pop out under the elastic force of the compression spring 308 and continue to move close to the inner wall of the cylinder 10. Through the rotation and elastic extension of the scraper 306, the scraper 306 continuously scrapes and impacts the inner wall of the cylinder 10, which can remove the coarse dust layer with strong adhesion on the inner wall of the cylinder 10, prevent dust from accumulating on the inner wall, and reduce the frequency and labor intensity of manual cleaning.

[0046] By setting up flange bearings with dustproof seals, not only is a stable rotational support provided for the rotating shaft 301, but the dust-laden airflow below the filter plate 211 is also strictly isolated from the clean air environment above, preventing high-concentration dust from escaping along the rotation gap and ensuring the overall purification and dust removal compliance rate of the device.

[0047] See Figure 1 , Figure 2 , Figure 6 and Figure 8 The impact mechanism 40 includes fixed plates 401 symmetrically fixed to the sides of the rotating shaft 301. Each fixed plate 401 has a deflection rod 402 rotatably connected to its side. An impact block 403 is fixedly connected to the bottom of each deflection rod 402, and a safety gap is maintained between the bottom of the impact block 403 and the upper surface of the filter plate 211 under normal conditions. An annular hard impact washer is laid on the upper surface of the filter plate 211 at the movement trajectory of the impact block 403. When the torsion spring 404 is released, the impact block 403 strikes the annular hard impact washer downwards across the safety gap. The combined design of the safety gap and the annular hard impact washer avoids continuous sliding wear and tearing of the flexible filter medium of the filter plate 211 by the impact block 403 during rotation. The impact force is evenly diffused to the entire filter plate through the hard washer, which greatly extends the service life of the filter plate while ensuring the high-frequency vibration cleaning effect.

[0048] A torsion spring 404 is sleeved on the outside of the shaft of the deflection rod 402. One end of the torsion spring 404 is fixedly connected to the side of the fixing plate 401, and the other end of the torsion spring 404 is fixedly connected to the side of the deflection rod 402. A lever 406 is fixedly connected to the end of the deflection rod 402 away from the torsion spring 404. A wedge block 405 is also fixedly connected to the inner wall of the cylinder 10. The inclined surface of the wedge block 405 is slidably connected to the bottom of the lever 406.

[0049] In operation, when the rotating shaft 301 rotates, the fixed plate 401 on the side of the rotating shaft 301 drives the deflection rod 402 and the lever 406 to rotate together. When the lever 406 rotates to contact the inclined surface of the wedge block 405 fixed to the inner wall of the cylinder 10, the lever 406 is lifted under the guidance of the inclined surface of the wedge block 405, causing the deflection rod 402 to rotate around its axis, thereby compressing and storing the torsion spring 404. When the lever 406 passes the highest point of the wedge block 405, the torsion spring 404 releases the stored elastic potential energy, quickly driving the deflection rod 402 and the impact block 403 at the bottom to rebound downwards, giving the upper surface of the filter plate 211 a rapid knock. Through periodic mechanical impact, the generated vibration waves can loosen and remove stubborn dust that is difficult to be blown away by airflow in the deep layers and gaps of the filter plate 211, enhancing the dust removal effect and avoiding the problem of increased filtration resistance caused by dust compaction.

[0050] See Figure 1 , Figure 2 and Figure 9 A collection bucket 501 is slidably connected to the side opening of the cylinder 10. A cover plate 503 that closes the side opening of the cylinder 10 is fixedly connected to the side of the collection bucket 501. Inverted V-shaped inclined plates 502 are symmetrically fixedly connected inside the collection bucket 501. The gap between adjacent inclined plates 502 forms a channel for dust to enter the collection bucket 501.

[0051] In practice, the dust removed during the blowing, scraping, and impact processes settles downwards under gravity. The dust falls into a collection bin 501 at the bottom of the cylinder 10. Symmetrically arranged inverted V-shaped inclined plates 502 inside the collection bin 501 form a channel, guiding the dust into the bin and preventing it from being stirred up again by airflow disturbances and spreading to the upper space of the cylinder 10. The collection bin 501 seals the side opening of the cylinder 10 with a side cover 503, ensuring no secondary pollution during the entire dust removal process. This achieves closed-loop collection and prevention of diffusion of the cleaned dust, ensuring that the removed dust settles quickly and is collected centrally.

[0052] Working principle:

[0053] The waste gas and dust generated during plywood production are absorbed by the fan and enter the cylinder 10 through the air inlet pipe 212. After the waste gas and dust are filtered at the bottom of the filter plate 211, the waste gas is discharged from the vent 213 at the top of the cylinder 10. The discharged waste gas is then treated. During the treatment, the blowing mechanism 20 blows away and removes the fine dust adhering to the micropores of the filter plate 211. At the same time, the scraping mechanism 30 scrapes away the coarse dust layer with strong adhesion on the inner wall of the cylinder 10 to prevent dust from accumulating on the inner wall. Then, the impact mechanism 40 quickly knocks on the upper surface of the filter plate 211. The resulting vibration wave can loosen and remove the stubborn dust that is difficult to blow away by the airflow in the deep layers and gaps of the filter plate 211. Finally, the cleaned dust is collected by the blocking mechanism 50 into the collection bucket 501 at the bottom of the cylinder 10.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dust removal and air purification device for plywood processing, characterized in that, Includes a cylinder (10), inside which is provided an air blowing mechanism (20) to reduce clogging, at the top of the air blowing mechanism (20) is provided a scraping mechanism (30), above the scraping mechanism (30) is provided an impact mechanism (40) to reduce clogging, and at the bottom surface of the inner side of the cylinder (10) is provided a barrier mechanism (50) to reduce dust diffusion. The blowing mechanism (20) includes a filter plate (211) fixedly connected inside the cylinder (10). A hollow tube (201) is also horizontally rotatably connected inside the cylinder (10). A U-shaped connecting tube (202) is symmetrically fixedly connected to the outside of the hollow tube (201), and the U-shaped connecting tube (202) is connected to the hollow tube (201). Each U-shaped connecting tube (202) has an air hole (203) on its outside. Both ends of the hollow tube (201) extend to the outside of the cylinder (10). An air pump (204) is fixedly connected to the outside of the cylinder (10). A pneumatic rotary joint is rotatably sleeved at one end of the hollow tube (201). The stationary end of the pneumatic rotary joint is connected to the air outlet of the air pump (204) through an air pipe. The rotating end of the pneumatic rotary joint is connected to the extended end of the hollow tube (201) and swings synchronously with it.

2. The dust removal and air purification device for plywood processing according to claim 1, characterized in that, A swing rod (205) is fixedly connected to one end of the hollow tube (201) away from the air pump (204). A groove (209) is provided on one end of the swing rod (205) away from the hollow tube (201). A slider (210) is slidably connected inside the groove (209).

3. The dust removal and air purification device for plywood processing according to claim 2, characterized in that, The cylinder (10) is also rotatably connected to a drive shaft (206), and both ends of the drive shaft (206) extend to the outside of the cylinder (10). A motor (207) is also fixedly connected to the outside of the cylinder (10). The output end of the motor (207) is fixedly connected to one end of the drive shaft (206), and a connecting rod (208) is fixedly connected to the other end of the drive shaft (206). The end of the connecting rod (208) away from the drive shaft (206) is fixedly connected to the side of the slider (210).

4. The dust removal and air purification device for plywood processing according to claim 1, characterized in that, The cylinder (10) is fixedly connected to an air inlet pipe (212) for entering the cylinder (10) with exhaust gas and dust near the bottom, and the cylinder (10) is fixedly connected to a vent hood (213) for discharging filtered airflow from the cylinder (10).

5. A dust removal and air purification device for plywood processing according to claim 3, characterized in that, The scraping mechanism (30) includes a rotating shaft (301) vertically rotatably connected to the middle of the filter plate (211). The filter plate (211) has a central through hole in the middle. A flange bearing with a dustproof sealing ring is fixedly embedded in the central through hole. The rotating shaft (301) is inserted into and fixed in the inner ring of the flange bearing to realize the rotational dynamic sealing connection between the rotating shaft (301) and the filter plate (211). A sleeve (304) is symmetrically fixedly connected to the side of the rotating shaft (301). A slide rod (305) is slidably connected in the cavity at the end of the sleeve (304) away from the rotating shaft (301). A scraper (306) is fixedly connected at the end of the slide rod (305) away from the sleeve (304), and the scraper (306) is slidably connected to the inner wall of the cylinder (10).

6. The dust removal and air purification device for plywood processing according to claim 5, characterized in that, The top of the rotating shaft (301) is fixedly connected to a first bevel gear (302), and the outside of the transmission shaft (206) is fixedly connected to a second bevel gear (303), which meshes with the first bevel gear (302).

7. A dust removal and air purification device for plywood processing according to claim 5, characterized in that, A compression spring (308) is provided in the cavity of the sleeve (304). One end of the compression spring (308) is fixedly connected to the inner wall of the cavity of the sleeve (304), and the other end of the compression spring (308) is fixedly connected to the side of the slide rod (305). A plurality of protrusions (307) are also fixedly connected at equal intervals on the inner wall of the cylinder (10), and the protrusions (307) are slidably connected to the side of the scraper (306).

8. The dust removal and air purification device for plywood processing according to claim 1, characterized in that, The impact mechanism (40) includes fixed plates (401) symmetrically fixedly connected to the side of the rotating shaft (301). Each fixed plate (401) is rotatably connected to a deflection rod (402) on its side. An impact block (403) is fixedly connected to the bottom of the deflection rod (402). Under normal conditions, there is a safety gap between the bottom of the impact block (403) and the upper surface of the filter plate (211). An annular hard impact washer is laid on the upper surface of the filter plate (211) at the movement trajectory of the impact block (403). When the torsion spring (404) is released, the impact block (403) moves downward across the safety gap and strikes the annular hard impact washer.

9. A dust removal and air purification device for plywood processing according to claim 8, characterized in that, A torsion spring (404) is sleeved on the outside of the shaft of the deflection rod (402). One end of the torsion spring (404) is fixedly connected to the side of the fixed plate (401), and the other end of the torsion spring (404) is fixedly connected to the side of the deflection rod (402). A lever (406) is fixedly connected to the end of the deflection rod (402) away from the torsion spring (404). A wedge (405) is also fixedly connected to the inner wall of the cylinder (10). The inclined surface of the wedge (405) is slidably connected to the bottom of the lever (406).

10. A dust removal and air purification device for plywood processing according to claim 1, characterized in that, A collection bucket (501) is slidably connected to the side opening of the cylinder (10). A cover plate (503) that closes the side opening of the cylinder (10) is fixedly connected to the side of the collection bucket (501). Inverted V-shaped inclined plates (502) are symmetrically fixedly connected inside the collection bucket (501). The gap between adjacent inclined plates (502) forms a channel for dust to enter the collection bucket (501).

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