Dust-free workshop purification dust remover for building material processing

Abstract

The invention discloses a dust-free workshop purification dust remover for building material processing, which comprises a structural frame plate and a dust removal part, the dust removal part comprises a filter chamber, the bottom end of the filter chamber is fixedly communicated with the upper surface of the structural frame plate, and the filter chamber is tightly attached to a dust removal piece through a spherical plate arranged on the inner wall of the filter chamber. The invention relates to the technical field of purification and dust removal. The dust-free workshop purification dust remover for building material processing can effectively solve the problems that in the prior art, a large amount of wood dust can be generated during building wood processing, the wood dust can be separated from air generally through a bag-type dust remover, and when dust on the surface of a filter bag is continuously increased, a pulse valve enables compressed air to be sprayed out through a nozzle, so that the dust removal effect is poor. In the prior art, dust on the surface of a cloth bag is rapidly separated from the filter bag under the action of reverse airflow when the filter bag is suddenly expanded, the whole process needs to be completed for a certain time, and the cloth bag type dust collector is in a long-term shutdown state in the process, so that wood processing is delayed.

Description

Technical Field

[0001] The invention relates to the technical field of purification and dust removal, and in particular to a purification and dust removal device for a dust-free workshop for processing building materials. Background Art

[0002] A bag filter is a vital dry dust filtration device. Made primarily of filter cloth made from textile materials and other non-textile materials, it is designed to collect, capture, and separate harmful particles, dust, and gases from the air in processing, production, and manufacturing plants. During this process, the bag filter removes some of the dust-laden air, while some dust particles settle due to their own weight. At a basic level, the system acts as an air pollution control device. The dust collector is designed to remove and treat polluted air that is harmful to human health and the environment, and discharge it as clean air.

[0003] For example, wood processing in building material factories generates large amounts of wood dust in the processing workshop. Baghouse dust collectors are typically used to separate wood dust from the air. In these baghouses, as dust accumulates on the filter bag surface, the programmable control instrument activates, opening the pulse valves one by one, allowing compressed air to flow through the nozzles to clean the filter bags. This causes the bags to expand suddenly, and the reverse airflow rapidly separates the dust from the bag surface, dropping it into the ash bin and exiting through the ash discharge valve. Because dust removal from the filter bags requires reverse airflow (the pulse valves should be open long enough to allow compressed air to fully flow through the nozzles to clean the bags, and closed long enough to allow the bags to fully expand and recover), the entire process takes time. During this process, the baghouse dust collector is shut down for extended periods, delaying wood processing. Furthermore, excessive pulse airflow can directly impact the filter bags, causing damage. Misdirected pulse airflow can also prevent the bags from fully penetrating and removing dust, compromising cleaning effectiveness. Summary of the Invention

[0004] Technical problems solved In response to the above-mentioned shortcomings of the prior art, the present invention provides a dust-free workshop purification dust collector for building material processing, which can effectively solve the problem in the prior art that building wood processing will generate a large amount of wood dust. Generally, a bag dust collector can be used to separate the wood dust from the air. When the dust on the surface of the filter bag continues to increase, the pulse valve causes compressed air to be ejected through the nozzle, and the filter bag suddenly expands. Under the action of the reverse airflow, the dust on the surface of the bag is quickly separated from the filter bag. It takes a certain amount of time to complete the whole process. During this process, the bag dust collector is in a long-term shutdown state, which delays the wood processing.

[0005] Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a dust-free workshop purification and dust removal device for building material processing, comprising: Structural frame panels; The dust removal part includes a filter chamber, the bottom end of the filter chamber is fixedly connected to the upper surface of the structural frame plate, the filter chamber is tightly fitted with a dust removal member via a spherical plate provided on the inner wall thereof, the outer circumferential surface of the filter chamber is fixedly connected to an air intake valve, and the air intake end of the air intake valve is located in the space enclosed above the dust removal member and the filter chamber; Among them, the dust removal component includes a spherical valve plate, the spherical surface of the spherical valve plate is tightly fitted with the inner wall of the spherical plate, the spherical surface of the spherical valve plate is fixedly connected to an adjusting arm that is rotatably connected to the inside of the filter chamber, and a filter is arranged in the space enclosed by the spherical valve plate, and the filter is provided with two and distributed up and down with the adjusting arm as the center.

[0006] Furthermore, it also includes a cleaning part, which includes a permeable plate. The outer surface of the filter chamber is provided with a water supply pipe connected to the upper surface of the structural frame plate, and the water supply pipe is connected to the external water supply valve. The water supply pipe and the permeable plate are connected through a connecting pipe.

[0007] Furthermore, the filter includes an ash collecting plate, the outer surface of which is fixedly connected to the inner side of the spherical valve plate, the ash collecting plate is fixedly connected to an annular magnetic plate through a telescopic rod arranged at the bottom of its inner wall, the inner side of the annular magnetic plate is threadedly connected to a locking ring, and the locking ring is rotatably installed with a filter bag close to the side of the ash collecting plate.

[0008] Furthermore, the ash collecting plate adopts a bell-mouth design, the outer circumferential surface of the filter bag is fixedly connected to a limit plate engaged with the inner side of the annular magnetic plate through an iron ring, and the inner side of the locking ring is fixedly connected to a straight rod.

[0009] Furthermore, the filter bag is fixedly connected to a first magnetic plate on the side away from the straight rod, the bottom of the inner wall of the ash collecting plate is fixedly connected to a strong spring, and the end of the strong spring away from the ash collecting plate is fixedly connected to a second magnetic plate magnetically connected to the first magnetic plate.

[0010] Furthermore, the inner wall of the ash collecting plate is fixedly connected to a wire plate, and the annular magnetic plate close to the telescopic rod is fixedly connected to a traction rope that fits into the groove of the wire plate, and the end of the traction rope away from the annular magnetic plate passes through the ash collecting plate, the spherical valve plate, the spherical plate and the filter chamber in sequence and extends to the outside, and the outer end of the traction rope is fixedly connected to a traction plate that slides with the outer surface of the circumference of the adjusting arm.

[0011] Furthermore, a top cover is detachably installed on the top of the filter chamber, and a lifting tube is slidably connected inside the top cover. The bottom end of the lifting tube is magnetically connected to the outer surface of the annular magnetic plate through a magnetic ring, and the upper surface of the top cover is fixedly connected to a hydraulic expander connected to the outer circumferential surface of the lifting tube.

[0012] Beneficial effects Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a dust removal part and a cleaning part. The staff manually pulls the traction plate to slide outward along the outer circumferential surface of the adjustment arm, driving the upper and lower sets of traction ropes to synchronously pull the corresponding annular magnetic plates. First, the upper annular magnetic plate is affected by the traction force of the traction rope, and the upper annular magnetic plate begins to separate from the magnetic ring at the bottom of the lifting tube. It slowly falls under the influence of its own gravity, and the filter bags begin to slowly gather. Secondly, the lower annular magnetic plate is affected by the traction force of the traction rope, and the corresponding filter bags also begin to slowly gather until the traction plate fits onto the handle of the adjustment arm. At this time, the annular magnetic plate and the filter bag are both in the "spherical space" contained by the spherical valve plate. The adjustment arm is then manually rotated to drive the spherical valve plate to rotate in accordance with the inner wall of the spherical plate, completing the position switching of the upper and lower sets of filters. After the spherical valve plate completes 180-degree rotation and quickly resets the traction plate, the dust in the upper ash collecting plate falls directly into the external collection box. At the same time, the upper annular magnetic plate rotates to the bottom and slides down rapidly under the influence of its own gravity, driving the upper filter bag to expand and shake, so that the dust on its surface is quickly detached. Then the external water supply pump is started to introduce clean water into the water supply pipe, and then the filter bag is fully cleaned through the permeable plate. During the cleaning process, the interchangeable filter below can also be filtered. During the subsequent filtration period, the filter bag is automatically dried. The whole process will not cause damage to the filter bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0014] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of a three-dimensional multi-angle structure of an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a three-dimensional partially separated dust removal unit according to an embodiment of the present invention; Figure 4 This is a schematic structural diagram of the three-dimensional separation of the filter chamber and the cleaning unit according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of a dust removal component according to an embodiment of the present invention; Figure 6 This is a schematic structural diagram of the three-dimensional separation of the spherical valve plate, the filter, and the traction rope according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of the three-dimensional separation of the annular magnetic plate and the locking ring in an embodiment of the present invention.

[0015] The numbers in the figure represent: 1. Structural frame plate; 2. Dust removal part; 21. Filter chamber; 22. Spherical plate; 23. Dust removal part; 231. Spherical valve plate; 232. Adjusting arm; 233. Filter; 2331. Ash collecting plate; 23311. Strong spring; 23312. Second magnetic plate; 23313. Wire guide plate; 2332. Telescopic rod; 2333. Annular magnetic plate; 23331. Traction rope; 23332. Traction plate; 2334. Locking ring; 23341. Straight rod; 2335. Filter bag; 23351. Limiting plate; 23352. First magnetic plate; 24. Inlet valve; 25. Top cover; 26. Lifting pipe; 27. Hydraulic telescopic device; 3. Cleaning part; 31. Permeable plate; 32. Water supply pipe. DETAILED DESCRIPTION

[0016] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] The present invention will be further described below with reference to the embodiments.

[0018] Example: See also Figure 1-Figure 7 The present invention provides a technical solution: a dust-free workshop purification dust collector for building material processing, comprising: Structural frame plate 1; The dust removal part 2 includes a filter chamber 21. The bottom end of the filter chamber 21 is fixedly connected to the upper surface of the structural frame plate 1. The filter chamber 21 is tightly fitted with a dust removal member 23 via a spherical plate 22 provided on the inner wall thereof. The outer surface of the filter chamber 21 is fixedly connected to an air intake valve 24, and the air intake end of the air intake valve 24 is located above the dust removal member 23 and in the space enclosed by the filter chamber 21. Among them, the dust removal part 23 includes a spherical valve plate 231, the spherical surface of the spherical valve plate 231 is tightly fitted with the inner wall of the spherical plate 22, and the spherical surface of the spherical valve plate 231 is fixedly connected to the regulating arm 232 which is rotatably connected to the inside of the filter chamber 21. A filter 233 is arranged in the space surrounded by the spherical valve plate 231, and the filter 233 is provided with two and distributed up and down with the regulating arm 232 as the center.

[0019] It also includes a cleaning part 3, which includes a water-permeable plate 31. The outer surface of the filter chamber 21 is provided with a water supply pipe 32 connected to the upper surface of the structural frame plate 1, and the water supply pipe 32 is connected to the external water supply valve. The water supply pipe 32 and the water-permeable plate 31 are connected by a connecting pipe.

[0020] The filter 233 includes an ash collecting plate 2331, the outer surface of the ash collecting plate 2331 is fixedly connected to the inner side of the spherical valve plate 231, the ash collecting plate 2331 is fixedly connected to the annular magnetic plate 2333 through a telescopic rod 2332 arranged at the bottom of its inner wall, the inner side of the annular magnetic plate 2333 is threadedly connected to a locking ring 2334, and the locking ring 2334 is rotatably installed with a filter bag 2335 close to the side of the ash collecting plate 2331.

[0021] The ash collecting plate 2331 adopts a bell-mouth design. The outer surface of the filter bag 2335 is fixedly connected to a limit plate 23351 that engages with the inner side of the annular magnetic plate 2333 through an iron ring. A straight rod 23341 is fixedly connected to the inner side of the locking ring 2334.

[0022] The filter bag 2335 is fixedly connected to the first magnetic plate 23352 on the side away from the straight rod 23341, and the bottom of the inner wall of the ash collecting plate 2331 is fixedly connected to a strong spring 23311. The end of the strong spring 23311 away from the ash collecting plate 2331 is fixedly connected to the second magnetic plate 23312 magnetically connected to the first magnetic plate 23352.

[0023] The inner wall of the ash collecting plate 2331 is fixedly connected to the wire plate 23313, and the side of the annular magnetic plate 2333 close to the telescopic rod 2332 is fixedly connected to a traction rope 23331 that fits into the groove of the wire plate 23313, and the end of the traction rope 23331 away from the annular magnetic plate 2333 passes through the ash collecting plate 2331, the spherical valve plate 231, the spherical plate 22 and the filter chamber 21 in sequence and extends to the outside, and the outer end of the traction rope 23331 is fixedly connected to the traction plate 23332 that slides with the outer surface of the circumference of the adjusting arm 232.

[0024] A top cover 25 is detachably installed on the top of the filter chamber 21. The top cover 25 is slidably connected to the lifting tube 26. The bottom end of the lifting tube 26 is magnetically connected to the outer surface of the annular magnetic plate 2333 through a magnetic ring. The upper surface of the top cover 25 is fixedly connected to a hydraulic expander 27 connected to the outer surface of the circumference of the lifting tube 26.

[0025] refer to Figure 1-7 For example, wood processing in building material factories will generate a large amount of wood dust in the processing workshop. Generally, bag dust collectors are used to separate wood dust from the air. In the above-mentioned bag dust collector, when the dust on the surface of the filter bag continues to increase, the program-controlled instrument starts to work, opening the pulse valves one by one, allowing compressed air to be ejected through the nozzles to clean the filter bags, causing the filter bags to suddenly expand. Under the action of the reverse airflow, the dust on the surface of the bag is quickly separated from the filter bags, falls into the ash bin, and is discharged by the ash discharge valve. Since the removal of dust on the surface of the filter bags requires reverse blowing (the pulse valve opening time should be long enough to allow compressed air to fully eject through the nozzles to clean the filter bags, and at the same time, the pulse valve closing time should also be long enough to allow the filter bags to fully expand and recover), it takes a certain amount of time to complete the entire process. During this process, the bag dust collector is in a long-term shutdown state, delaying the wood processing. In addition, the pulse airflow intensity is too high, which directly impacts the filter bags, causing them to be damaged. The pulse airflow direction is incorrect and cannot fully penetrate the filter bags and blow off the dust, which also affects the cleaning effect. In order to overcome the above-mentioned defects, the present invention designs a dust-free workshop purification dust collector for building material processing.

[0026] Filter bag dust removal method: The dust gas is introduced into the filter chamber 21 through the air inlet valve 24 on the dust removal part 2. There are two filters 233 in the dust removal part 23, which are distributed up and down with the adjustment arm 232 as the center (the upper and lower groups of filters 233 are in the vertical direction, and there is a 45-degree rotation angle between them, which is convenient for the subsequent interchangeable adjustment of their positions). The pressure in the space enclosed by the filter chamber 21 and the upper group of filters 233 continues to increase. The gas is filtered through the filter bag 2335 on the filter 233. The dust is blocked on the outer surface of the filter bag 2335, and the clean air is introduced into the lifting pipe 26 through the filter bag 2335 and then discharged. The present invention needs to emphasize that, since the filter bag 2335 is fixedly connected to the first magnetic plate 23352 on the side away from the straight rod 23341, the bottom of the inner wall of the ash collecting plate 2331 is fixedly connected to the strong spring 23311, and at the same time, the strong spring 23311 is fixedly connected to the second magnetic plate 23312 magnetically connected to the first magnetic plate 23352 on the end away from the ash collecting plate 2331. 11 The three work together to keep the filter bag 2335 in a normal stretched state, avoiding deformation of the filter bag 2335 due to excessive wind force or local blockage during the filtering process. Secondly, the gas flowing into the air inlet valve 24 is unstable. The strong spring 23311 can not only stabilize the shape of the filter bag 2335, but also improve the vibration effect of the filter bag 2335, thereby accelerating the separation of dust from the surface of the filter bag 2335. The dust collecting plate 2331 adopts a trumpet design to facilitate the unified collection of dust.

[0027] Filter bag cleaning method: It is worth noting that, whether using a conventional filter bag or the filter bag 2335 of the present invention (preferably made of synthetic materials such as polyester and polyamide, which have a certain degree of water washability), after long-term use, dust will accumulate on the surface of the filter bag 2335, deteriorating the filtration efficiency of the filter bag 2335 and requiring cleaning of the filter bag 2335. The traditional pulse valve cleaning method requires the pulse valve to be open long enough to allow compressed air to fully flow through the nozzle to clean the filter bag. At the same time, the pulse valve must be closed long enough to allow the filter bag to fully expand and recover. This entire process requires a certain amount of time to complete, and the bag dust collector is in a long-term shutdown state during this process, delaying the processing of wood. In contrast, the present invention only requires a short shutdown to swap the positions of the upper and lower groups of filters 233. The working time of the lower group of filters 233 can be used to clean the upper group of filters 233, so that cleaning and filtering do not interfere with each other. The design advantage of the two groups of filters 233 is not only reflected in the reduction of a large amount of cleaning time (the swapping time of the upper and lower groups of filters 233 is much less than the completion time of pulse valve cleaning), but also the upper group of filters 233 can be inspected or replaced during the filtering process of the lower group of filters 233, basically realizing seamless connection of cleaning, maintenance and replacement.

[0028] Regarding the switching method of the upper and lower sets of filters 233, after the equipment is shut down, the staff manually pulls the traction plate 23332 to slide outward along the circumferential outer surface of the adjustment arm 232, driving the upper and lower sets of traction ropes 23331 to synchronously pull the corresponding annular magnetic plates 2333. The filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag 2335 is then pulled together and the filter bag Then, the adjusting arm 232 is manually rotated 180 degrees (the traction rope 23331 and the traction plate 23332 rotate synchronously), driving the spherical valve plate 231 to rotate in contact with the inner wall of the spherical plate 22, completing the position switching of the upper and lower sets of filters 233.

[0029] It is also necessary to emphasize that, after the spherical valve plate 231 completes a 180-degree rotation and quickly resets the traction plate 23332, the dust in the upper ash collecting plate 2331 falls directly into the external collection box. At the same time, after the upper annular magnetic plate 2333 rotates to the bottom, it slides down rapidly under the influence of its own gravity, driving the upper filter bag 2335 to expand and shake, so that the dust on its surface is quickly detached (the telescopic rod 2332 limits it for protection, and the first magnetic plate 23352, the second magnetic plate 23312 and the strong spring 23311 work together to make the filter bag 2335 stretch normally). Due to insufficient needle density or relatively loose surface, fine dust can easily enter the filter material and remain in it, causing blockage and may also cause the filter bag to deform. It is difficult to completely remove the dust on the surface of the filter bag 2335 by simply blowing away the dust. At this time, start the external water supply pump, introduce clean water into the water supply pipe 32, and then clean the filter bag 2335 in all aspects through the permeable plate 31. During the cleaning process, the interchangeable filter 233 below can also be filtered. During the subsequent filtering period, the filter bag 2335 is automatically dried. At the same time, the hydraulic expander 27 drives the lifting tube 26 to slide downward along the inside of the top cover 25 until the magnetic ring at the bottom end of the lifting tube 26 contacts the interchangeable annular magnetic plate 2333 below, and the two are attracted together. The hydraulic expander 27 drives the lifting tube 26 to reset, and drives the filter bag 2335 to stretch normally (the expansion rod 2332 provides it with limit protection, and the first magnetic plate 23352, the second magnetic plate 23312 and the strong spring 23311 work together to make the filter bag 2335 stretch normally) for subsequent filtration.

[0030] Filter bag replacement method: When the filter bag 2335 is damaged, the filter bag 2335 can be rotated downward, and the upper filter bag 2335 can be used for filtering without interfering with each other. Then, the straight rod 23341 is manually grasped and rotated to drive the locking ring 2334 to rotate and disengage around the inner wall of the annular magnetic plate 2333. Then, the filter bag 2335 is manually pulled to drive the first magnetic plate 23352 to disengage from the second magnetic plate 23312, thereby completing the removal of the old filter bag 2335. Similarly, the first magnetic plate 23352 on the new filter bag 2335 is attracted to the second magnetic plate 23312, and the rotating locking ring 2334 is combined with the annular magnetic plate 2333 into a whole to complete the replacement of the new filter bag 2335.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A dust-free workshop purification and dust removal device for building material processing, characterized in that: include: Structural frame plate (1); A dust removal section (2), the dust removal section (2) comprising a filter chamber (21), the bottom end of the filter chamber (21) being fixedly connected to the upper surface of the structural frame plate (1), the filter chamber (21) being tightly fitted with a dust removal member (23) via a spherical plate (22) arranged on the inner wall thereof, the outer circumferential surface of the filter chamber (21) being fixedly connected to an air intake valve (24), and the air intake end of the air intake valve (24) being located above the dust removal member (23) and in a space enclosed by the filter chamber (21); The dust removal member (23) comprises a spherical valve plate (231), the spherical surface of the spherical valve plate (231) is tightly fitted with the inner wall of the spherical plate (22), the spherical surface of the spherical valve plate (231) is fixedly connected to an adjustment arm (232) rotatably connected to the inside of the filter chamber (21), and a filter (233) is arranged in the space enclosed by the spherical valve plate (231), and the filter (233) is provided with two filters (233) which are distributed up and down with the adjustment arm (232) as the center.

2. The dust-free workshop purification and dust removal device for building material processing according to claim 1 is characterized in that: It also comprises a cleaning member (3), the cleaning member (3) comprising a water permeable plate (31), a water supply pipe (32) connected to the upper surface of the structural frame plate (1) is sleeved on the circumferential outer surface of the filter chamber (21), the water supply pipe (32) is connected to the external water supply valve, and the water supply pipe (32) and the water permeable plate (31) are connected via a connecting pipe.

3. The dust-free workshop purification and dust removal device for building material processing according to claim 1 is characterized in that: The filter (233) comprises an ash collecting plate (2331), the outer surface of the ash collecting plate (2331) being fixedly connected to the inner side of the spherical valve plate (231), the ash collecting plate (2331) being fixedly connected to an annular magnetic plate (2333) via a telescopic rod (2332) arranged at the bottom of the inner wall thereof, the inner side of the annular magnetic plate (2333) being threadedly connected to a locking ring (2334), and a filter bag (2335) being rotatably mounted on a side of the locking ring (2334) close to the ash collecting plate (2331).

4. A dust-free workshop purification and dust removal device for building material processing according to claim 3, characterized in that: The ash collecting plate (2331) adopts a bell-mouth design, the outer circumferential surface of the filter bag (2335) is fixedly connected to a limit plate (23351) engaged with the inner side of the annular magnetic plate (2333) via an iron ring, and the inner side of the locking ring (2334) is fixedly connected to a straight rod (23341).

5. The dust-free workshop purification and dust removal device for building material processing according to claim 4 is characterized in that: A first magnetic plate (23352) is fixedly connected to the side of the filter bag (2335) away from the straight rod (23341), a strong spring (23311) is fixedly connected to the bottom of the inner wall of the ash collecting plate (2331), and a second magnetic plate (23312) magnetically connected to the first magnetic plate (23352) is fixedly connected to the end of the strong spring (23311) away from the ash collecting plate (2331).

6. The dust-free workshop purification and dust removal device for building material processing according to claim 3 is characterized by: The inner wall of the ash collecting plate (2331) is fixedly connected to a conductor plate (23313); a traction rope (23331) that fits in the groove of the conductor plate (23313) is fixedly connected to the side of the annular magnetic plate (2333) close to the telescopic rod (2332); and the end of the traction rope (23331) that is away from the annular magnetic plate (2333) passes through the ash collecting plate (2331), the spherical valve plate (231), the spherical plate (22) and the filter chamber (21) in sequence and extends to the outside; the outer end of the traction rope (23331) is fixedly connected to a traction plate (23332) that slides on the circumferential outer surface of the regulating arm (232).

7. The dust-free workshop purification and dust removal device for building material processing according to claim 3 is characterized by: A top cover (25) is detachably mounted on the top of the filter chamber (21); a lifting tube (26) is slidably connected to the inside of the top cover (25); the bottom end of the lifting tube (26) is magnetically connected to the outer surface of the annular magnetic plate (2333) via a magnetic ring; and a hydraulic expander (27) connected to the circumferential outer surface of the lifting tube (26) is fixedly connected to the upper surface of the top cover (25).

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