An air filtration system for a wood-based panel processing plant

Abstract

The present invention relates to the technical field of plant air treatment, and particularly relates to an air filtration system for a wood-based panel processing plant. The air filtration system for the wood-based panel processing plant includes a housing and a filtration module. An air inlet chamber and an air outlet chamber that are isolated from each other are arranged inside the housing; the filtration module includes at least one filtration unit. The filtration unit includes a dust removal bag body and a keel. The dust removal bag body has a main body part located in the air inlet chamber and an outlet part located in the air outlet chamber; the keel is arranged as an elastic spiral structure and is inserted inside the dust removal bag body. The first end of the keel is fixedly arranged, and the second end of the keel can slide reciprocally along the axial direction of the dust removal bag body, so as to change the contact position between itself and the inner peripheral wall of the dust removal bag body by changing its own diameter, thereby avoiding the same position of the dust removal bag body from contacting the keel for a long time. While ensuring the utilization rate of the dust removal bag body, it helps to extend the service life of the dust removal bag body and reduce the air filtration cost.

Description

Technical Field

[0001] The present invention relates to the technical field of plant air treatment, and particularly to an air filtration system for a wood-based panel processing plant. Background Art

[0002] Wood-based panel processing uses wood as raw materials and applies mechanical or chemical methods for processing; during the process of wood-based panel processing, due to the requirements of shape, color, and performance, operations such as cutting, grinding, and spraying are often required for the wood, and as a result, additional products such as sawdust, shavings, grinding dust, and paint impurities will be generated. If not removed and directly discharged, it will not only cause harm to the human body and the environment, but also does not conform to the development concept of the advanced environmental protection industry.

[0003] The advanced environmental protection industry refers to industries that save energy and resources, develop circular economy, protect the ecological environment, and provide material basis and technical support. It includes the production and operation of environmental protection equipment and products using advanced technologies, as well as the integration of environmental protection technologies and related service industries, etc.; in recent years, affected by factors such as national economic development, environmental protection policy orientation, and industry technological innovation, the overall development of China's advanced environmental protection industry has been rapid.

[0004] In related technologies, in order to make the air in the wood-based panel processing plant meet the emission standards to meet the development needs of the advanced environmental protection industry, the air in the wood-based panel processing plant is often filtered through air filtration equipment. For example, Chinese reference document with the publication number CN110917753B discloses an industrial dust removal bag body dust collector. During the process of filtering air, all the dust scraping rings are driven to move vertically downward along the guide rod, and during the vertical downward movement, they can closely adhere to the inner wall of the dust removal bag body to scrape and push the dust accumulated on the inner wall downward, so that the accumulated dust can be effectively cleaned, and the dust removal bag can be restored to a relatively ideal dust removal state.

[0005] Although the above-mentioned industrial dust removal bag body dust collector improves the efficiency of air filtration to a certain extent, it is found in actual use that the part where the dust removal bag body contacts the keel is blocked, which easily causes the part where the dust removal bag body contacts the keel to be unable to perform the filtration work, and the long-term contact between the same part of the dust removal bag body and the keel will accelerate the aging of the dust removal bag body and increase the cost of air treatment. Summary of the Invention

[0006] Based on this, in view of the problems of low utilization rate and easy aging of the dust removal bag body existing in the current plant air purification, it is necessary to provide an air filtration system for a wood-based panel processing plant.

[0007] The above object is achieved by the following technical solutions:

[0008] A wood-based panel processing plant air filtration system, the wood-based panel processing plant air filtration system comprising:

[0009] A housing, an air inlet chamber and an air outlet chamber which are isolated from each other are arranged inside the housing;

[0010] A filtering module, the filtering module includes at least one filtering unit, the filtering unit includes a dust removal bag body and a keel, the dust removal bag body has a main body part located in the air inlet chamber and an outlet part located in the air outlet chamber; the keel is arranged as an elastic spiral structure and is inserted inside the dust removal bag body, the first end of the keel is fixedly arranged, and the second end of the keel can slide reciprocally along the axial direction of the dust removal bag body to change the contact position between itself and the inner peripheral wall of the dust removal bag body by changing its own diameter.

[0011] Further, the wood-based panel processing plant air filtration system further includes a mounting seat and a support rod, the mounting seat is fixedly arranged at the outlet part; the first end of the support rod is fixedly arranged on the mounting seat, and the second end is inserted into the dust removal bag body in a suspended manner, and the support rod and the dust removal bag body are coaxially arranged; the first end of the keel is fixedly arranged at the second end of the support rod.

[0012] Further, the filtering unit further includes a driving mechanism, and the driving mechanism is configured to be able to provide a driving force for stretching the keel.

[0013] Further, the driving mechanism includes a fan, a sleeve, a transmission assembly and a trigger assembly, the fan is arranged on the mounting seat and can rotate around its own axis; the sleeve is inserted into the dust removal bag body and can rotate synchronously with the fan under the action of the transmission assembly; a sliding seat is arranged at the second end of the keel, the sliding seat is sleeved outside the sleeve, and can rotate synchronously with the sleeve under the action of the trigger assembly to stretch the keel.

[0014] Further, the transmission assembly includes a first gear, a second gear, a third gear and a ring gear, the first gear is fixedly sleeved on the transmission shaft of the fan; the second gear and the third gear are coaxially arranged and are both arranged on the mounting seat and can rotate synchronously; the ring gear is coaxially arranged inside the sleeve; the first gear is meshed and connected with the second gear, and the third gear is meshed and connected with the ring gear to transmit the rotation of the fan to the sleeve.

[0015] Further, the triggering component includes an electromagnet and a magnetic sliding block. The electromagnet is disposed inside the sleeve; the sliding block is inserted into the sleeve and can elastically slide along the radial direction of the sleeve, so as to be clamped on the sliding seat under the repulsive force when the electromagnet is energized.

[0016] Further, there are two keels, and they are symmetrically arranged about the axis center of the dust removal bag body.

[0017] Further, a filtering part is also disposed inside the air inlet chamber, and the filtering part is configured to filter the air before the filtering module filters the air.

[0018] Further, the air filtering system for a wood-based panel processing workshop further includes a cleaning part, and the cleaning part is configured to clean the filtering part.

[0019] Further, a collection hopper is disposed at the bottom of the housing, and the collection hopper is configured to collect the impurities cleaned by the cleaning part.

[0020] The beneficial effects of the present invention are as follows:

[0021] During the process of filtering the air in the wood-based panel processing workshop by the air filtering system for a wood-based panel processing workshop provided by the present invention, the air first enters the air inlet chamber from the workshop, and then after the main part of the dust removal bag body filters out the impurity particles contained therein, it enters the exhaust chamber from the outlet part of the dust removal bag body, and then is discharged from the exhaust chamber to the external environment. At the same time, the second end of the keel reciprocally slides along the axial direction of the dust removal bag body under the action of an external force. While periodically changing its own diameter, by continuously changing the contact position with the inner peripheral wall of the dust removal bag body, it avoids the same position of the dust removal bag body contacting the keel for a long time. While ensuring the utilization rate of the dust removal bag body, it helps to extend the service life of the dust removal bag body and reduce the air filtering cost.

[0022] Furthermore, by providing a driving mechanism, during the process of filtering the air in the wood-based panel processing workshop, when the driving mechanism stretches the keel, the diameter of the keel continuously becomes smaller and the pitch continuously becomes larger, so as to be able to continuously change the contact position with the inner peripheral wall of the dust removal bag body; after the keel is stretched to a preset length, the driving mechanism stops working, and under the elastic action, the keel automatically resets, the diameter continuously becomes larger, and the pitch continuously becomes smaller, so as to be able to pat the dust removal bag body to shake off the impurities adsorbed on the outer wall surface of the dust removal bag body and ensure the filtering effect of the dust removal bag body.

[0023] Further, by providing two keels and arranging them symmetrically about the axis center of the dust removal bag body, on the one hand, it can better support the dust removal bag body, and on the other hand, the two keels can reduce the beating gap for the dust removal bag body compared with one keel, so that the dust removal bag body can be beaten more evenly. Moreover, the two keels can beat symmetrically at the same time, so that while the dust removal bag body can be unfolded more evenly, it can avoid unidirectional pulling of the dust removal bag body, resulting in damage. Description of the Drawings

[0024] Figure 1 Schematic perspective view of the air filtration system of the wood-based panel processing workshop provided by an embodiment of the present invention;

[0025] Figure 2 Schematic side view of the air filtration system of the wood-based panel processing workshop provided by an embodiment of the present invention;

[0026] Figure 3 For Figure 2 Cross-sectional view taken along line A-A of the air filtration system of the wood-based panel processing workshop shown;

[0027] Figure 4 Schematic perspective view of the filtration module and the partition of the air filtration system of the wood-based panel processing workshop provided by an embodiment of the present invention during assembly;

[0028] Figure 5 Schematic perspective view of the filtration unit of the air filtration system of the wood-based panel processing workshop provided by an embodiment of the present invention;

[0029] Figure 6 Schematic top view of the filtration unit of the air filtration system of the wood-based panel processing workshop provided by an embodiment of the present invention;

[0030] Figure 7 For Figure 6 Cross-sectional view taken along line B-B of the air filtration system of the wood-based panel processing workshop shown;

[0031] Figure 8 Schematic perspective view of the filtration unit of the air filtration system of the wood-based panel processing workshop provided by an embodiment of the present invention with the dust removal bag body removed;

[0032] Figure 9 Schematic front view of the mounting seat and the sleeve of the air filtration system of the wood-based panel processing workshop provided by an embodiment of the present invention during assembly;

[0033] Figure 10 For Figure 9 Cross-sectional view taken along line C-C of the mounting seat and the sleeve of the air filtration system of the wood-based panel processing workshop shown during assembly;

[0034] Figure 11 For Figure 9 The D-D cross-sectional view during the assembly of the mounting seat and the sleeve of the air filtration system in the wood board processing workshop shown in the figure.

[0035] Wherein:

[0036] 1. Housing; 11. Air inlet; 12. Exhaust port; 13. Leg; 14. Collection hopper; 15. Filter plate; 16. Scraping rod; 17. Partition board;

[0037] 2. Filter module; 21. Filter unit; 211. Fan; 212. Mounting seat; 2121. First gear; 2122. Second gear; 213. Dust collection bag body; 214. Sleeve; 2141. Sliding block; 2142. Fixed block; 2143. Gear shaft; 2144. Third gear; 2145. Ring gear; 2146. Electromagnet; 2147. Tension spring; 215. Sliding seat; 2151. Card slot; 216. Support rod; 217. Keel. Detailed implementation manners

[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specifically stated, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0040] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0041] As Figures 1 to 11 shown, the air filtration system for a wood-based panel processing plant provided by an embodiment of the present invention is used to filter the air in the wood-based panel processing plant; in this embodiment, the air filtration system for the wood-based panel processing plant is arranged to include a housing 1 and a filtration module 2. Specifically, the housing 1 is arranged in a box structure; more specifically, in order to facilitate the support of the housing 1, a plurality of legs 13 are provided at the bottom of the housing 1; for example, as Figure 1 shown, the number of legs 13 can be set to four, and they are respectively arranged at the four corners of the bottom of the housing 1; an air inlet chamber and an air outlet chamber are provided inside the housing 1 and are isolated from each other. Specifically, as Figure 3 shown, a partition 17 is horizontally inserted inside the housing 1. The partition 17 divides the housing 1 into an upper half and a lower half. The upper half of the housing 1 is set as the air outlet chamber, and the lower half of the housing 1 is set as the air inlet chamber; more specifically, as Figure 3 shown, on the left side wall surface of the housing 1, an air outlet 12 is opened above the partition 17. The air outlet 12 is communicated with the air outlet chamber to discharge the air inside the air outlet chamber to the external environment. On the right side wall surface of the housing 1, an air inlet 11 is opened below the partition 17. The air inlet 11 is communicated with the air inlet chamber and is used to receive the air in the wood-based panel processing plant.

[0042] The filtration module 2 is arranged to include at least one filtration unit 21. The filtration unit 21 is arranged to include a dust removal bag body 213 and a keel 217. The dust removal bag body 213 has a main body part located in the air inlet chamber and an outlet part located in the air outlet chamber. Specifically, as Figure 3 and Figure 5 shown, the dust removal bag body 213 is arranged as a rotary body structure with a U-shaped cross section, and when installed, the outlet part of the dust removal bag body 213 is vertically arranged at the bottom of the partition 17, and the main body part of the dust removal bag body 213 is suspended; more specifically, at least one through hole is opened on the plate surface of the partition 17. The through hole is correspondingly arranged with the dust removal bag body 213 and is communicated with the outlet part of the dust removal bag body 213; the keel 217 is arranged as an elastic spiral structure and is inserted inside the dust removal bag body 213. Specifically, as Figure 7 and Figure 8 shown, the cross section of the keel 217 can be set to be circular; the first end of the keel 217 is fixedly arranged, and the second end of the keel 217 can reciprocally slide along the axial direction of the dust removal bag body 213 to change the contact position with the inner peripheral wall of the dust removal bag body 213 by changing its own diameter; specifically, as Figure 7 shown, the lower end of the keel 217 is set as the first end, and the upper end of the keel 217 is set as the second end.

[0043] For example, as Figure 4As shown, the filtering module 2 can be set to include 25 filtering units 21, and 5 filtering units 21 form a group. Five groups of filtering units 21 are arranged side by side or in parallel on the partition 17.

[0044] It can be understood that the cross-section of the keel 217 can also be set to other shapes such as triangles, rectangles, ellipses, or polygons with five or more sides.

[0045] In this embodiment, for the convenience of installing the keel 217, the air filtering system of the wood-based panel processing workshop is also set to include a mounting seat 212 and a support rod 216. The mounting seat 212 is fixedly arranged at the outlet part. Specifically, as Figure 3 、 Figure 5 and Figure 10 shown, the mounting seat 212 is set to an annular structure and is fixedly and coaxially inserted into the through-hole during installation; more specifically, to enable the outlet part of the dust removal bag body 213 to communicate with the exhaust chamber normally, as Figure 10 shown, a plurality of ventilation holes are opened on the end face of the mounting seat 212. One end of the ventilation hole communicates with the exhaust chamber, and the other end communicates with the through-hole; more specifically, the plurality of ventilation holes can be arranged evenly in the circumferential direction; more specifically, the shape of the ventilation hole can be set to a fan shape; the first end of the support rod 216 is fixedly arranged on the mounting seat 212, and the second end is suspended and inserted into the dust removal bag body 213. The support rod 216 and the dust removal bag body 213 are coaxially arranged. Specifically, as Figure 7 shown, the support rod 216 is set to a T-shaped rod structure and has a round rod part and a base part that are vertically and fixedly connected. The base part can be set to an annular structure to facilitate the support of the dust removal bag body 213. The top end of the round rod part is set as the first end of the support rod 216, and the base part is set as the second end of the support rod 216. During installation, the top end of the round rod part is coaxially and fixedly connected to the bottom of the mounting seat 212, and the base part is suspended and inserted into the dust removal bag body 213 and is arranged near the bottom of the dust removal bag body 213; the first end of the keel 217 is fixedly arranged on the second end of the support rod 216. Specifically, as Figure 7 shown, the bottom end of the keel 217 is fixedly connected to the top end face of the base part.

[0046] In this embodiment, for the convenience of providing the driving force for the second end of the keel 217 to reciprocate axially along the dust removal bag body 213, the air filtering system of the wood-based panel processing workshop can be set to include at least one first driving cylinder. The first driving cylinder is correspondingly arranged with the dust removal bag body 213 and is arranged on the partition 17 during installation and is located directly above the through-hole. The output shaft of the first driving cylinder is arranged axially downward along the dust removal bag body 213 and is fixedly connected to the second end of the keel 217 to synchronously drive the second end of the keel 217 to move.

[0047] It can be understood that the first driving cylinder can be set as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0048] During the process of filtering the air in the wood-based panel processing workshop, the air first continuously enters the intake chamber from the workshop through the intake port 11. As the air continuously enters, the pressure in the intake chamber gradually increases. Since the exhaust chamber is always connected to the external environment through the exhaust port 12, the pressure in the exhaust chamber remains unchanged. Therefore, the pressure in the intake chamber is greater than the pressure in the exhaust chamber, and there is a pressure difference between the two. Under the action of the pressure difference, after the air passes through the main part of the dust removal bag body 213 to filter out the impurity particles contained therein, it passes through the through holes and ventilation holes in sequence from the outlet part of the dust removal bag body 213, enters the interior of the exhaust chamber, and then is discharged to the external environment through the exhaust port 12 of the exhaust chamber. At the same time, the first driving cylinder is started, and the output shaft of the first driving cylinder drives the second end of the keel 217 to reciprocally slide axially along the dust removal bag body 213. During the process of the second end of the keel 217 moving axially upward along the dust removal bag body 213, the diameter of the keel 217 continuously decreases, the pitch continuously increases, and the contact position with the inner peripheral wall of the dust removal bag body 213 is continuously changed. During the process of the second end of the keel 217 moving axially downward along the dust removal bag body 213 synchronously, the diameter of the keel 217 continuously increases, the pitch continuously decreases, and the contact position with the inner peripheral wall of the dust removal bag body 213 is continuously changed, so as to prevent the same position of the dust removal bag body 213 from contacting the keel 217 for a long time. While ensuring the utilization rate of the dust removal bag body 213, it helps to extend the service life of the dust removal bag body 213 and reduce the air filtration cost.

[0049] In some other embodiments, in addition to being set to provide the driving force for the second end of the keel 217 to reciprocally slide axially along the dust removal bag body 213 through the first driving cylinder, it can also be set that the filtering unit 21 further includes a driving mechanism configured to be able to provide the driving force for stretching the keel 217.

[0050] In this embodiment, the driving mechanism can be set to include a fan 211, a sleeve 214, a transmission assembly and a trigger assembly. The fan 211 is arranged on the mounting seat 212 and can rotate around its own axis. Specifically, as Figure 5 shown, the fan 211 is coaxially arranged on the mounting seat 212; the sleeve 214 is inserted inside the dust removal bag body 213 and can rotate synchronously with the fan 211 under the action of the transmission assembly. Specifically, as Figure 11 shown, the sleeve 214 is set to be coaxially and rotatably connected to the bottom of the mounting seat 212; a sliding seat 215 is arranged at the second end of the keel 217, the sliding seat 215 is sleeved outside the sleeve 214, and can rotate synchronously with the sleeve 214 under the action of the trigger assembly to stretch the keel 217. Specifically, as Figure 8As shown, the sliding seat 215 can be set as an annular structure to facilitate the support of the dust removal bag body 213.

[0051] In this embodiment, the transmission assembly is set to include a first gear 2121, a second gear 2122, a third gear 2144, and a ring gear 2145. The first gear 2121 is fixedly sleeved on the transmission shaft of the fan 211. Specifically, as Figure 7 shown, the first gear 2121 is coaxially sleeved on the transmission shaft of the fan 211 and is inserted into the mounting seat 212 so as to be rotatable about its own axis; the second gear 2122 and the third gear 2144 are coaxially arranged and are both arranged on the mounting seat 212 and can rotate synchronously. Specifically, as Figure 10 and Figure 11 shown, for the convenience of installing the second gear 2122 and the third gear 2144, the transmission assembly is also set to include a gear shaft 2143. When installed, the gear shaft 2143 is arranged to be parallel to the axis direction of the dust removal bag body 213, and the top end is inserted into the mounting seat 212, and the bottom end is suspended below the mounting seat 212. When installed, the second gear 2122 is fixedly sleeved on the top end of the gear shaft 2143, and the third gear 2144 is fixedly sleeved on the bottom end of the gear shaft 2143 when installed; as Figure 11 shown, the ring gear 2145 is coaxially arranged inside the sleeve 214; the first gear 2121 and the second gear 2122 are meshed and connected, and the third gear 2144 and the ring gear 2145 are meshed and connected to transmit the rotation of the fan 211 to the sleeve 214.

[0052] In this embodiment, the trigger assembly is set to include an electromagnet 2146 and a magnetic sliding block 2141. As Figure 11 shown, the electromagnet 2146 is arranged inside the sleeve 214; the sliding block 2141 is inserted into the sleeve 214 and can elastically slide along the radial direction of the sleeve 214 so as to be clamped on the sliding seat 215 under the repulsive force when the electromagnet 2146 is energized; specifically, as Figure 8As shown, a clamping groove 2151 is provided on the inner peripheral wall of the sliding seat 215. The clamping groove 2151 can be clamped with the sliding clamping block 2141, so that the rotation of the sleeve 214 can be transmitted to the sliding seat 215, and the sliding seat 215 can drive the keel 217 to rotate synchronously, and then the keel 217 becomes slender under its own elastic action; more specifically, in order to facilitate providing a driving force for the elastic sliding of the sliding clamping block 2141 in the radial direction of the sleeve 214, a tension spring 2147 or an elastic cord is provided between the sleeve 214 and the sliding clamping block 2141. The tension spring 2147 or the elastic cord is used to drive the sliding clamping block 2141 to reset when the electromagnet 2146 is powered off; more specifically, in order to prevent the sliding seat 215 from disengaging from the clamping connection with the sliding clamping block 2141 during reset, a fixed clamping block 2142 is provided on the outer peripheral wall of the sleeve 214 near the bottom. The fixed clamping block 2142 and the sliding clamping block 2141 are located on the same axis direction and can be clamped with the clamping groove 2151 to limit the sliding seat 215.

[0053] It can be understood that the number of the sliding clamping blocks 2141, the tension springs 2147 or the elastic cords, and the electromagnets 2146 can be set to be multiple, and they are all arranged evenly in the circumferential direction to improve the connection stability between the sleeve 214 and the sliding seat 215; correspondingly, the number of the clamping grooves 2151 is also set to be multiple and arranged evenly in the circumferential direction; correspondingly, the number of the fixed clamping blocks 2142 is also set to be multiple and arranged evenly in the circumferential direction; for example, as Figure 9 and Figure 11 shown, the number of the sliding clamping blocks 2141, the fixed clamping blocks 2142, the tension springs 2147 or the elastic cords, and the electromagnets 2146 are all set to be two, and they are all symmetrically arranged about the axis of the sleeve 214. The number of the clamping grooves 2151 is also set to be two and symmetrically arranged about its own axis; during use, the two sliding clamping blocks 2141 can be respectively clamped with the corresponding clamping grooves 2151.

[0054] In the process of filtering the air in the wood board processing plant, the fan 211 rotates under the blowing of the air, the fan 211 drives the second gear 2122 to rotate through the first gear 2121, the second gear 2122 drives the third gear 2144 to rotate through the gear shaft 2143, and the third gear 2144 drives the sleeve 214 to rotate through the ring gear 2145. At the same time, the electromagnet 2146 is energized, and the sliding block 2141 moves outward along the radial direction of the sleeve 214 to pass through the card slot 2146 under the action of the repulsive force. 51 is connected to the sliding seat 215. During the movement of the sliding block 2141, the sliding block 2141 synchronously drives the tension spring 2147 or the elastic rope to be synchronously stretched to store force. When the sliding block 2141 stops moving, the sleeve 214 drives the keel 217 to rotate synchronously through the sliding seat 215. During the rotation of the keel 217, the diameter of the keel 217 continuously decreases and the pitch continuously increases under the action of its own elasticity, and synchronously drives the sliding seat 215 to move upward, thereby continuously changing the inner peripheral wall of the dust bag body 213. When the sliding seat 215 moves to the top of the sliding block 2141, the electromagnet 2146 is stopped from being energized, and the sliding block 2141 moves inwardly along the radial direction of the sleeve 214 under the pull of the tension spring 2147 or the elastic rope until it is retracted into the sleeve 214. At this time, the sliding block 2141 loses its limiting effect on the keel 217, and the keel 217 moves downward under the action of its own elasticity, with the diameter continuously increasing and the pitch continuously decreasing, so that the dust bag body 213 can be slapped to shake off the dust bag. The impurities adsorbed on the outer wall of the dust bag body 213 ensure the filtering effect of the dust bag body 213; and because the diameter of the keel 217 gradually recovers from top to bottom, the diameter of the upper keel 217 gradually increases, which has the effect of delayed striking to ensure that the impurities shaken off will not adhere to the dust bag body 213 for a second time, and the lower keel 217 will open the dust bag body 213, while reducing the tendency of the dust bag body 213 to rotate along with the keel 217, reducing the influence of wind on the dust bag body 213, thereby ensuring the striking effect.

[0055] In other embodiments, the driving mechanism can also be configured to include a second driving cylinder to provide the driving force for stretching the keel 217. Specifically, the number of the second driving cylinders is set to be equal to the number of the dust removal bag bodies 213, and they are arranged corresponding to the dust removal bag bodies 213. When installed, they are arranged on the partition plate 17 and directly above the through holes. The output shaft of the second driving cylinder is arranged downward along the axis of the dust removal bag body 213 and is fixedly connected to the second end of the keel 217 to synchronously drive the second end of the keel 217 to move. During use, when it is necessary to stretch the keel 217, the second driving cylinder is started, and the output shaft of the second driving cylinder drives the second end of the keel 217 to move upward synchronously along the axis of the dust removal bag body 213, so that the diameter of the keel 217 continuously becomes smaller and the pitch continuously becomes larger, so as to continuously change the contact position with the inner peripheral wall of the dust removal bag body 213. When the keel 217 is reset, the second driving cylinder is closed, and the keel 217 can automatically reset under its own elastic action.

[0056] It can be understood that the second driving cylinder can be set as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0057] In some other embodiments, the number of the keels 217 is set to two, and they are symmetrically arranged about the axis center of the dust removal bag body 213. Specifically, as Figure 8 shown, the bottom ends of the two keels 217 are both fixedly connected to the top end surface of the base, and the bottom ends of the two keels 217 are both fixedly connected to the bottom end surface of the sliding seat 215. And when viewed from the axis of the dust removal bag body 213, the two keels 217 are staggered. Thus, during the process of filtering the air in the wood-based panel processing workshop, on the one hand, the two keels 217 can better support the dust removal bag body 213, and on the other hand, the two keels 217 can reduce the beating gap for the dust removal bag body 213 compared with one keel 217, so that the dust removal bag body 213 can be beaten more evenly. And the two keels 217 can keep symmetric beating at the same time, so that while the dust removal bag body 213 can be unfolded more evenly, the dust removal bag body 213 is prevented from being unidirectionally pulled, resulting in damage.

[0058] In some other embodiments, a filtering part is further arranged inside the air inlet chamber. The filtering part is configured to be able to filter the air before the air is filtered by the filtering module 2 to remove the relatively large-volume particulate impurities contained in the air, so as to prevent the particulate impurities from blocking the dust removal bag body 213 and affecting the filtering effect of the dust removal bag body 213.

[0059] In this embodiment, the filtering part can be set to include a filter plate 15. As Figure 3 shown, when installed, the filter plate 15 is arranged parallel to the right side wall surface of the housing 1 and is located between the filtering module 2 and the air inlet 11. Filter holes are formed in the filter plate 15, and the filter holes are used to filter some particulate impurities contained in the air.

[0060] In a further embodiment, the air filtration system of the wood board processing workshop is further provided with a cleaning part, and the cleaning part is configured to be able to clean the filtering part to ensure the filtering effect of the filtering part.

[0061] In this embodiment, the cleaning part can be set to include a scraping rod 16. As Figure 3 shown, a part of the scraping rod 16 is inserted into the air inlet chamber, and is in contact with the right surface of the filter plate 15, and can slide up and down in the vertical direction to clean the right surface of the filter plate 15.

[0062] It can be understood that the scraping rod 16 can be driven to move manually.

[0063] It can be understood that the scraping rod 16 can also be driven to move by setting a third driving cylinder; specifically, the third driving cylinder can be set at the top of the housing 1, and its output shaft is arranged vertically downward and fixedly connected to the top of the scraping rod 16 to drive the scraping rod 16 to move synchronously.

[0064] It can be understood that the third driving cylinder can be set as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0065] In a further embodiment, a collecting hopper 14 is arranged at the bottom of the housing 1. The collecting hopper 14 is configured to be able to collect the impurities cleaned by the cleaning part for unified cleaning; specifically, as Figure 1 and Figure 3 shown, the collecting hopper 14 is set as a housing 1 structure in the shape of a frustum of a pyramid, and the large end is upward and communicated with the air inlet chamber.

[0066] It can be understood that the collecting hopper 14 can also collect the impurities adhered to the dust removal bag body 213 beaten by the keel 217.

[0067] In other embodiments, the filtering part can also be set to include a filter screen.

[0068] In other embodiments, the cleaning part can also be set to include a spray head, and the spray head can spray water or gas to clean the surface of the filter plate 15 or the filter screen.

[0069] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0070] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. An air filtration system for a wood-based panel processing plant, characterized in that, The air filtration system of the wood-based panel processing plant includes: A housing, inside which there are an air inlet chamber and an air outlet chamber isolated from each other; A filtration module, which includes at least one filtration unit. The filtration unit includes a dust removal bag body and a keel. The dust removal bag body has a main body part located in the air inlet chamber and an outlet part located in the air outlet chamber. The keel is arranged in a spiral structure with elasticity and is inserted inside the dust removal bag body. The first end of the keel is fixedly arranged, and the second end of the keel can slide reciprocally along the axial direction of the dust removal bag body to change the contact position between itself and the inner peripheral wall of the dust removal bag body by changing its own diameter. The air filtration system of the wood-based panel processing plant also includes a mounting seat and a support rod. The mounting seat is fixedly arranged at the outlet part. The first end of the support rod is fixedly arranged on the mounting seat, and the second end is suspended and inserted inside the dust removal bag body. The support rod and the dust removal bag body are coaxially arranged. The first end of the keel is fixedly arranged at the second end of the support rod. The filtration unit also includes a driving mechanism configured to be able to provide the driving force for stretching the keel. When the driving mechanism stretches the keel, the diameter of the keel continuously becomes smaller and the pitch continuously becomes larger, so as to be able to continuously change the contact position between the keel and the inner peripheral wall of the dust removal bag body. After the keel is stretched to a preset length, the driving mechanism stops working, and under the elastic action, the keel automatically resets, the diameter continuously becomes larger, and the pitch continuously becomes smaller, so as to be able to pat the dust removal bag body.

2. The air filtration system for a wood-based panel processing plant according to claim 1, wherein The driving mechanism includes a fan, a sleeve, a transmission component, and a trigger component. The fan is arranged on the mounting seat and can rotate around its own axis. The sleeve is inserted inside the dust removal bag body and can rotate synchronously with the fan under the action of the transmission component. A sliding seat is arranged at the second end of the keel. The sliding seat is sleeved outside the sleeve and can rotate synchronously with the sleeve under the action of the trigger component to stretch the keel.

3. The air filtration system for a wood panel processing workshop according to claim 2, wherein, The transmission component includes a first gear, a second gear, a third gear, and a ring gear. The first gear is fixedly sleeved on the transmission shaft of the fan. The second gear and the third gear are coaxially arranged and are both arranged on the mounting seat and can rotate synchronously. The ring gear is coaxially arranged inside the sleeve. The first gear is meshed with the second gear, and the third gear is meshed with the ring gear to transmit the rotation of the fan to the sleeve.

4. The air filtration system for a wood-based panel processing plant according to claim 2, wherein, The trigger component includes an electromagnet and a magnetic sliding block. The electromagnet is arranged inside the sleeve. The sliding block is inserted inside the sleeve and can elastically slide along the radial direction of the sleeve to be clamped on the sliding seat under the repulsive force when the electromagnet is energized.

5. The air filtration system for a wood panel processing plant according to claim 1, characterized in that, The number of the keels is two, and they are symmetrically arranged about the axis center of the dust removal bag body.

6. The air filtration system for a wood panel processing plant according to claim 1, wherein, A filtration part is also arranged inside the air inlet chamber, and the filtration part is configured to be able to filter the air before the filtration module filters the air.

7. The air filtration system for a wood-based panel processing plant according to claim 6, characterized in that, The air filtration system of the wood-based panel processing workshop further includes a cleaning part, and the cleaning part is configured to be able to clean the filtering part.

8. The air filtration system for a wood-based panel processing workshop according to claim 7, characterized in that, A collection hopper is arranged at the bottom of the housing, and the collection hopper is configured to be able to collect the impurities cleaned by the cleaning part.

Images