A dust removal device for stone crushing and its usage method

Abstract

This invention relates to the field of dust removal technology in stone crushing processing, and particularly to a dust removal device for stone crushing processing, comprising a housing, a first cyclone dust collector, and a second cyclone dust collector. The first and second cyclone dust collectors are inclinedly disposed on the top of the housing. The top of the housing has a first air inlet duct communicating with the first cyclone dust collector and a second air inlet duct communicating with the second cyclone dust collector. A first dust collection port at the bottom of the first cyclone dust collector and a second dust collection port at the bottom of the second cyclone dust collector communicate with the interior of the housing. The second cyclone dust collector is disposed diagonally below the first cyclone dust collector. Two first and second collection holes are formed on the lowest sidewalls of both the first and second cyclone dust collectors. A channel communicating with the second cyclone dust collector is fixed to the outside of the first collection hole. A first dust pipe is fixed to the outside of the lower second collection hole, and a second dust pipe is fixed to the outside of the other second collection hole.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology in stone crushing, and more specifically, to a dust removal device for stone crushing and its usage method. Background Technology

[0002] Crushed stone (such as granite) that is otherwise useless during ore mining is often crushed and used as raw material in construction. To meet environmental protection requirements, dust suppression equipment is commonly used on crushers, which involves spraying large amounts of water to reduce dust pollution when crushing generates a large amount of dust. However, this method not only results in a serious waste of water resources, but also requires treatment of the wastewater after spraying, increasing dust suppression costs. Furthermore, dust adheres to the crushed stone after spraying, making the crushed stone unsuitable for construction materials and requiring secondary screening. Therefore, developing a dust removal device that does not require water spraying for dust suppression during crushing and can classify and treat dust is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0003] This invention aims to overcome the problems of water waste caused by spray dust suppression, the inability to discharge wastewater after spraying, the need for treatment which increases dust suppression costs, and the adhesion of dust to gravel after spray dust suppression, which can easily cause the gravel to fail to meet the requirements of building construction materials and require secondary screening. The invention provides a dust removal device that can classify and treat dust without using water spray dust suppression during gravel processing.

[0004] A dust removal device for stone crushing includes a housing, a first cyclone dust collector, and a second cyclone dust collector.

[0005] A feed inlet is provided on the upper part of one side of the equipment housing, and a discharge outlet is provided on the lower part of the opposite side. A crushing device is provided inside the equipment housing. A conveying device is provided below the crushing device and located at the bottom of the inner side of the equipment housing to transport the crushed stone to the outside of the equipment housing. The conveying device passes through the discharge outlet.

[0006] The first cyclone dust collector is disposed on the top of the equipment housing. The first cyclone dust collector is inclined. The top of the equipment housing is provided with a first air inlet pipe that communicates with the first cyclone dust collector. A first air inlet fan is installed on the first air inlet pipe. The first dust removal port at the bottom of the first cyclone dust collector communicates with the inside of the equipment housing.

[0007] The second cyclone dust collector is inclinedly disposed below the first cyclone dust collector and connected to the outside of the first cyclone dust collector. The top of the equipment housing is provided with a second air inlet pipe that communicates with the second cyclone dust collector. A second air inlet fan is installed on the second air inlet pipe. The second dust collection port at the bottom of the second cyclone dust collector communicates with the inside of the equipment housing. A first collection hole and a second collection hole are respectively opened on the bottom side wall of the first cyclone dust collector and the second cyclone dust collector. There are two first collection holes and two second collection holes. A channel communicating with the second cyclone dust collector is fixed to the outside of the first collection hole. A first dust pipe is fixed to the outside of the lower second collection hole, and a second dust pipe is fixed to the outside of the other second collection hole. The opening of the first dust pipe extends to the top of the conveying device.

[0008] Furthermore, both the first and second collection holes are provided with baffles on their lower sides, which are fixedly connected to the inner wall of the first or second cyclone dust collector.

[0009] Furthermore, at least two guide plates are provided on the upper side of the first and second collection holes, and the guide plates gradually rise along the direction of the dust particle movement.

[0010] Furthermore, it also includes a third cyclone dust collector, the opening of the first dust pipe extends into the equipment housing and is close to the discharge port, the third cyclone dust collector is vertically installed on the outside of the equipment housing and is provided with a third air inlet pipe, the end of the third air inlet pipe away from the third cyclone dust collector extends to the top of the discharge port, the bottom of the third cyclone dust collector is connected to a third dust pipe, and the opening of the third dust pipe extends to the opening position of the second dust pipe.

[0011] Furthermore, both the first and second cyclone dust collectors include a dust collection chamber enclosed by the side wall. The upper part of the dust collection chamber has a cylindrical structure, and the lower part has a conical structure. The first collection hole and the second collection hole are both located at the conical structure at the lower part of the first and second cyclone dust collectors.

[0012] Furthermore, the feed inlet is equipped with a one-way curtain, the upper end of which is rotatably connected to the equipment housing and can only rotate toward the inside of the equipment housing.

[0013] Furthermore, the crushing device is a jaw crusher, which includes a fixed crushing jaw and a movable crushing jaw. The fixed crushing jaw is fixed inside the equipment housing and located below the feed inlet. The movable crushing jaw is installed opposite to the fixed crushing jaw, and a crushing chamber and a crushing gap are formed between the movable crushing jaw and the fixed crushing jaw. The movable crushing jaw can be driven by a crusher driver to generate crushing motion.

[0014] Furthermore, the movable crusher jaw is located in the middle of the inner side of the equipment housing, and a buffer mechanism connected to the movable crusher jaw is installed on the side of the equipment housing opposite to the fixed crusher jaw.

[0015] Furthermore, the conveying device is a conveyor belt device.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The dust removal equipment for stone crushing in this invention utilizes cyclone dust collectors to effectively collect small stone dust during the crushing process. It features a first and a second cyclone dust collector, both designed at an angle. By opening first and second collection holes on the side walls, it not only classifies the small stone dust, but also allows smaller dust particles to pass through the upper first and second collection holes, while larger particles pass through the lower first and second collection holes. Larger particles then enter the equipment housing through the dust collection inlet, achieving classification. The angled design of the first and second cyclone dust collectors facilitates the accumulation of small stone dust on the lower side walls, through the first and second collection holes, and into the dust collection inlet, promoting classification. The two-stage design of the first and second cyclone dust collectors increases dust removal efficiency.

[0018] The dust removal equipment for crushed stone processing in this invention has baffles fixedly connected to the inner wall of the first cyclone dust collector or the second cyclone dust collector on the lower side of both the first collection hole and the second collection hole. The baffles can block small crushed stone dust, so that small crushed stone and dust particles with smaller particle size are collected by the first dust pipe and the second dust pipe respectively.

[0019] This invention also provides a method for using the above-mentioned dust removal equipment for crushing stone. The method involves starting the first, second, and third cyclone dust collectors, activating the crushing device and the conveying device, and feeding the stone material into the equipment housing through the feed inlet. The crushing device crushes the stone material, and the crushed stone is conveyed to the outside of the equipment housing by the conveying device. Small stones and dust particles generated during the crushing process enter the first and second cyclone dust collectors through the first and second air inlet pipes. After purification, the dust particles are discharged through the second dust pipe. Smaller particles... Smaller gravel particles enter the first dust pipe and are conveyed to the conveying device through the pipe opening. Larger gravel particles return to the equipment housing through the first and second dust removal ports and are conveyed to the outside of the equipment housing by the conveying device together with the crushed gravel. Dust generated at the pipe opening of the first dust pipe enters the third cyclone dust collector through the third air inlet pipe for dust removal, and the dust particles are discharged through the third dust pipe. When the equipment is no longer in use, first stop feeding, then turn off the crushing device and the conveying device, and finally turn off the first, second, and third cyclone dust collectors. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the dust removal equipment for stone crushing in an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of the first cyclone dust collector and the second cyclone dust collector in an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the planar structure at the first collection hole in an embodiment of the present invention.

[0024] In the diagram: 1. Equipment casing; 2. Feed inlet; 3. Discharge outlet; 4. Conveying device; 5. First cyclone dust collector; 6. First air inlet duct; 7. First air inlet fan; 8. First dust collection port; 9. Second cyclone dust collector; 10. Second air inlet duct; 11. Second air inlet fan; 12. First collection hole; 13. Second collection hole; 14. Channel; 15. First dust pipe; 16. Second dust pipe; 17. Baffle; 18. Guide plate; 19. Third cyclone dust collector; 20. Third air inlet duct; 21. Third dust pipe; 22. One-way curtain; 23. Fixed crusher jaw; 24. Movable crusher jaw; 25. Crushing chamber; 26. Crushing gap; 27. Buffer mechanism; 28. Stop block; 29. ​​Central tube. Detailed Implementation

[0025] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, the dust removal equipment for stone crushing in this embodiment includes a housing 1, a first cyclone dust collector 5, and a second cyclone dust collector 9.

[0027] A feed inlet 2 is located on the upper part of one side of the equipment housing 1, and a discharge outlet 3 is located on the lower part of the opposite side. A crushing device is installed inside the equipment housing 1. Below the crushing device and located at the bottom inner side of the equipment housing 1, a conveying device 4 is installed to transport the crushed stone to the outside of the equipment housing 1. The conveying device 4 passes through the discharge outlet 3. Preferably, a feeding conveyor belt is installed outside the feed inlet 2, and the stone is transported into the equipment housing 1 by the feeding conveyor belt. The conveying device 4 is a conveyor belt device. A one-way curtain 22 is installed at the feed inlet 2. The upper end of the one-way curtain 22 is rotatably connected to the equipment housing 1 and can only rotate towards the inside of the equipment housing 1. Specifically, in this embodiment, the one-way curtain 22 can be made of flexible materials such as rubber (soft curtain) or lightweight rigid curtain made of plastic sheeting. The upper end of the one-way curtain 22 can be connected to the equipment housing 1 by a hinge, and a stop block 28 is provided at the upper end of the one-way curtain 22 to prevent it from rotating towards the outside of the equipment housing 1.

[0028] The first cyclone dust collector 5 is installed on the top of the equipment housing 1. The first cyclone dust collector 5 is inclined. The top of the equipment housing 1 is provided with a first air inlet pipe 6 that communicates with the first cyclone dust collector 5. A first air inlet fan 7 is installed on the first air inlet pipe 6. The first dust removal port 8 at the bottom of the first cyclone dust collector 5 communicates with the inside of the equipment housing 1.

[0029] The second cyclone dust collector 9 is inclinedly positioned below the first cyclone dust collector 5, and its outer wall is in contact with the outer wall of the first cyclone dust collector 5. A second air inlet duct 10, communicating with the second cyclone dust collector 9, is provided at the top of the equipment housing 1, and a second air inlet fan 11 is installed on the second air inlet duct 10. The second dust collection port at the bottom of the second cyclone dust collector 9 communicates with the interior of the equipment housing 1. Specifically, the first air inlet duct 6 and the second air inlet duct 10 are located on opposite sides of the first cyclone dust collector 5 and the second cyclone dust collector 9.

[0030] The first cyclone dust collector 5 and the second cyclone dust collector 9 each have a first collection hole 12 and a second collection hole 13 on their lowest side walls, respectively. There are two first collection holes 12 and two second collection holes 13. A channel 14 communicating with the second cyclone dust collector 9 is fixed to the outside of the first collection hole 12. A first dust pipe 15 is fixed to the outside of the lower second collection hole 13, and a second dust pipe 16 is fixed to the outside of the other second collection hole 13. The opening of the first dust pipe 15 extends above the conveying device 4, conveying the collected small-diameter gravel to the conveying device 4, where it is transported to the stone pile along with the crushed gravel. The second dust pipe 16 conveys the collected dust particles to the dust pile for further processing.

[0031] The dust removal equipment for stone crushing in this invention utilizes cyclone dust collectors to effectively collect small stone dust during the stone crushing process. It features a first cyclone dust collector 5 and a second cyclone dust collector 9, both designed at an angle. By opening first collection holes 12 and second collection holes 13 on the side walls, it can not only classify the small stone dust, but also ensure that smaller dust particles pass through the upper first and second collection holes 12 and 13, while larger small stones pass through the lower first and second collection holes 12 and 13, and the larger small stones enter the equipment housing 1 through the dust collection port, thus achieving classification. The angled arrangement of the first cyclone dust collector 5 and the second cyclone dust collector 9 facilitates the accumulation of small stone dust on the lower side walls, through the first and second collection holes 12 and 13, and through the dust collection port, which is beneficial for classification. The two-stage arrangement of the first cyclone dust collector 5 and the second cyclone dust collector 9 increases dust removal efficiency.

[0032] Specifically, in this embodiment, both the first cyclone dust collector 5 and the second cyclone dust collector 9 include a dust collection chamber surrounded by side walls. The upper part of the dust collection chamber has a cylindrical structure, and the lower part has a conical structure. The first air inlet pipe 6 and the second air inlet pipe 10 are connected to the cylindrical structure at the upper part of the first cyclone dust collector 5 and the second cyclone dust collector 9. The first collection hole 12 and the second collection hole 13 are both located at the conical structure at the lower part of the first cyclone dust collector 5 and the second cyclone dust collector 9. A central pipe 29 is provided inside the dust collection chamber, and the upper end of the central pipe 29 extends to the outside of the dust collection chamber. The purified gas is discharged through the central pipe 29.

[0033] Both the first collection hole 12 and the second collection hole 13 are provided with baffles 17 fixedly connected to the inner wall of the first cyclone dust collector 5 or the second cyclone dust collector 9 on their lower sides. The baffles 17 are arranged laterally at the bottom of the first collection hole 12 and the second collection hole 13, thereby blocking particulate dust and allowing it to enter the second cyclone dust collector 9 or the first dust pipe 15 or the second dust pipe 16. At least two guide plates 18 are provided on the upper side of the first collection hole 12 and the second collection hole 13, and the guide plates 18 gradually rise along the direction of dust particle movement. Specifically, in this embodiment, three guide plates 18 are provided on the upper side of the first collection hole 12 and the second collection hole 13, and the lower end of the guide plates 18 extends to the first collection hole 12 or the second collection hole 13, and the distance between the two outer guide plates 18 is less than the diameter of the first collection hole 12 and the second collection hole 13. The movement trajectory of dust particles in the cyclone dust collector is a spiral upward trajectory, and the height of the three guide plates 18 increases sequentially along the spiral upward movement direction of the dust particles, thereby intercepting the dust particles.

[0034] In this embodiment, the crushing device is a jaw crusher, which includes a fixed jaw 23 and a movable jaw 24. The fixed jaw 23 is fixed inside the equipment housing 1 and located below the feed inlet 2. The movable jaw 24 is installed opposite to the fixed jaw 23, forming a crushing chamber 25 and a crushing gap 26 between the movable jaw 24 and the fixed jaw 23. The movable jaw 24 can be driven by a crusher driver to generate crushing motion. The feed conveyor belt transports the stone into the equipment housing 1. The stone entering the equipment housing 1 enters the crushing chamber 25 and falls into the crushing gap 26. Due to the reciprocating motion of the movable jaw 24, it crushes the stone by squeezing it against the fixed jaw 23.

[0035] Dust is generated during stone crushing. The ends of the first air inlet pipe 6 and the second air inlet pipe 10 away from the first cyclone dust collector 5 and the second cyclone dust collector 9 are both set towards the crushing chamber 25, thereby drawing the dust into the first cyclone dust collector 5 and the second cyclone dust collector 9. The dust collection ports of the first cyclone dust collector 5 and the second cyclone dust collector 9 are also set towards the crushing chamber 25, so that large-diameter crushed stones drawn into the first cyclone dust collector 5 and the second cyclone dust collector 9 are discharged back into the crushing chamber 25 through the dust collection ports and transported to the outside of the equipment shell 1 together with the crushed stones.

[0036] In this embodiment, the movable crusher jaw 24 is disposed in the middle of the inner side of the equipment housing 1. A buffer mechanism 27 connected to the movable crusher jaw 24 is installed on the side of the equipment housing 1 opposite to the fixed crusher jaw 23, thereby generating a buffering effect and reducing vibration when the movable crusher jaw 24 moves away from the fixed crusher jaw 23. Specifically, the buffer mechanism 27 can be a damper.

[0037] In this embodiment, the end of the first dust pipe 15 that is away from the second cyclone dust collector 9 extends into the equipment housing 1 and is close to the discharge port 3. When the gravel in the first dust pipe 15 is released onto the conveying device 4, dust will be generated. In order to avoid dust pollution of the surrounding environment, the end of the first dust pipe 15 that is away from the second cyclone dust collector 9 is set inside the equipment housing 1. In order to remove the dust generated when the crushed stone in the first dust pipe 15 is released onto the conveying device 4, the dust removal equipment for crushed stone processing in this embodiment also includes a third cyclone dust collector 19. The third cyclone dust collector 19 is vertically installed on the outside of the equipment housing 1 and is provided with a third air inlet pipe 20. A third air inlet fan is installed on the third air inlet pipe 20. The end of the third air inlet pipe 20 away from the third cyclone dust collector 19 extends to the top of the discharge port 3. The bottom of the third cyclone dust collector 19 is connected to a third dust pipe 21. The opening of the third dust pipe 21 extends to the opening of the second dust pipe 16, so that the dust particles collected by the third dust pipe 21 and the dust particles collected by the second dust pipe 16 are stored together for subsequent processing.

[0038] The third cyclone dust collector 19 includes a shell that surrounds and forms a dust collection chamber. The upper part of the dust collection chamber has a cylindrical structure, and the lower part has a conical structure. A central pipe 29 is installed inside the dust collection chamber, and the upper end of the central pipe 29 extends to the outside of the dust collection chamber, thereby discharging the dust-collected gas. The end of the third air inlet pipe 20 away from the equipment shell 1 is connected to the upper part of the dust collection chamber of the third cyclone dust collector 19, and the third dust pipe 21 is connected to the bottom of the conical structure at the bottom of the dust collection chamber of the third cyclone dust collector 19.

[0039] The working principle of the dust removal equipment for stone crushing in this embodiment is as follows:

[0040] The stones are conveyed into the equipment housing 1 via the feed conveyor belt. During the conveying process, the one-way curtain 22 is pushed inward by the stones and rotates towards the inside of the equipment housing 1, allowing the stones to enter smoothly into the equipment housing 1. The one-way curtain 22 also effectively prevents dust from overflowing. The stones entering the equipment housing 1 enter the crushing chamber 25 formed between the movable crusher jaw 24 and the fixed crusher jaw 23 of the jaw crusher. When they fall into the crushing gap 26, the movable crusher jaw 24 reciprocates, thus squeezing the stones against the fixed crusher jaw 23 and crushing them. Dust is generated during the stone crushing process. The dust is drawn into the first air inlet duct 6 and the second air inlet duct 10 by the action of the first air inlet fan 7 and the second air inlet fan 11, and then enters the first cyclone dust collector 5 and the second cyclone dust collector 9. Under the action of the first cyclone dust collector 5 and the second cyclone dust collector 9, and because the first collection hole 12 and the second collection hole 13 are opened on the side walls of the first cyclone dust collector 5 and the second cyclone dust collector 9, dust particles in the first cyclone dust collector 5 enter the second cyclone dust collector 9 through the upper first collection hole 12, and small-diameter gravel in the second cyclone dust collector 9 enters the second cyclone dust collector 9 through the lower first collection hole 12. Dust particles entering the second cyclone dust collector 9 enter the second dust pipe 16 through the upper second collection hole 13, and small-diameter gravel entering the second cyclone dust collector 9 enters the first dust pipe 15 through the lower second collection hole 13. The gas after dust removal in the first cyclone dust collector 5 and the second cyclone dust collector 9 is discharged through the central pipe 29. Larger-diameter gravel returns to the equipment housing 1 through the first dust removal port 8 and the second dust removal port, and is transported to the outside of the equipment housing 1 along with the crushed gravel by the conveying device 4. The third cyclone dust collector 19 can remove the dust generated when the first dust pipe 15 discharges small-diameter gravel.

[0041] The method of using the dust removal equipment for stone crushing in this embodiment is as follows:

[0042] Start the first cyclone dust collector 5, the second cyclone dust collector 9, and the third cyclone dust collector 19. Start the crushing device and the conveying device 4. Feed the stone into the equipment shell 1 through the feed inlet 2. The crushing device crushes the stone, and the crushed stone is conveyed to the outside of the equipment shell 1 by the conveying device 4. The small stones and dust particles generated during the crushing process enter the first cyclone dust collector 5 and the second cyclone dust collector 9 through the first air inlet pipe 6 and the second air inlet pipe 10. After purification, the dust particles enter the second dust pipe 16 for discharge. Smaller-diameter small stones enter the first dust pipe 15. The material is fed into the conveying device 4 through the opening of the first dust pipe 15; larger-diameter small stones return to the equipment housing 1 through the first dust removal port 8 and the second dust removal port, and are conveyed to the outside of the equipment housing 1 together with the crushed stones by the conveying device 4; the dust generated at the opening of the first dust pipe 15 enters the third cyclone dust collector 19 through the third air inlet pipe 20 for dust removal, and the dust particles are discharged through the third dust pipe 21; when the use is finished, first stop feeding, shut down the crushing device and the conveying device 4, and finally shut down the first cyclone dust collector 5, the second cyclone dust collector 9 and the third cyclone dust collector 19.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust removal device for stone crushing, characterized in that, include: The equipment housing (1) has an inlet (2) on the upper part of one side and an outlet (3) on the lower part of the opposite side. A crushing device is provided inside the equipment housing (1). A conveying device (4) is provided below the crushing device and at the bottom of the inner side of the equipment housing (1) to transport the crushed stone to the outside of the equipment housing (1). The conveying device (4) passes through the outlet (3). The first cyclone dust collector (5) is located on the top of the equipment housing (1). The first cyclone dust collector (5) is inclined. The top of the equipment housing (1) is provided with a first air inlet pipe (6) that communicates with the first cyclone dust collector (5). A first air inlet fan (7) is installed on the first air inlet pipe (6). The first dust removal port (8) at the bottom of the first cyclone dust collector (5) communicates with the inside of the equipment housing (1). The second cyclone dust collector (9) is inclinedly arranged below the first cyclone dust collector (5) and connected to the outside of the first cyclone dust collector (5). The top of the equipment housing (1) is provided with a second air inlet pipe (10) communicating with the second cyclone dust collector (9). A second air inlet fan (11) is installed on the second air inlet pipe (10). The second dust collection port at the bottom of the second cyclone dust collector (9) is connected to the inside of the equipment housing (1). The first cyclone dust collector (5) and the second cyclone dust collector... The bottom side wall of the device (9) is provided with a first collection hole (12) and a second collection hole (13). There are two first collection holes (12) and two second collection holes (13). A channel (14) communicating with the second cyclone dust collector (9) is fixed on the outside of the first collection hole (12). A first dust pipe (15) is fixed on the outside of the second collection hole (13) located below. A second dust pipe (16) is fixed on the outside of the other second collection hole (13). The opening of the first dust pipe (15) extends to the top of the conveying device (4).

2. The dust removal equipment for stone crushing according to claim 1, characterized in that, Both the first collection hole (12) and the second collection hole (13) are provided with baffles (17) that are fixedly connected to the inner wall of the first cyclone dust collector (5) or the second cyclone dust collector (9).

3. The dust removal equipment for stone crushing according to claim 2, characterized in that, At least two guide plates (18) are provided on the upper side of the first collection hole (12) and the second collection hole (13), and the guide plates (18) gradually rise along the direction of dust particle movement.

4. The dust removal equipment for stone crushing according to any one of claims 1-3, characterized in that, It also includes a third cyclone dust collector (19), the opening of the first dust pipe (15) extends into the equipment housing (1) and is close to the discharge port (3), the third cyclone dust collector (19) is vertically installed on the outside of the equipment housing (1) and is provided with a third air inlet pipe (20), the end of the third air inlet pipe (20) away from the third cyclone dust collector (19) extends to the top of the discharge port (3), the bottom of the third cyclone dust collector (19) is connected to a third dust pipe (21), the opening of the third dust pipe (21) extends to the opening position of the second dust pipe (16).

5. The dust removal equipment for stone crushing according to any one of claims 1-3, characterized in that, Both the first cyclone dust collector (5) and the second cyclone dust collector (9) include a dust collection chamber surrounded by the side wall. The upper part of the dust collection chamber has a cylindrical structure and the lower part has a conical structure. The first collection hole (12) and the second collection hole (13) are both located at the conical structure at the lower part of the first cyclone dust collector (5) and the second cyclone dust collector (9).

6. The dust removal equipment for stone crushing according to any one of claims 1-3, characterized in that, The feed inlet (2) is provided with a one-way curtain (22), the upper end of which is rotatably connected to the equipment housing (1) and can only rotate toward the inside of the equipment housing (1).

7. The dust removal equipment for stone crushing according to any one of claims 1-3, characterized in that, The crushing device is a jaw crusher, which includes a fixed crushing jaw (23) and a movable crushing jaw (24). The fixed crushing jaw (23) is fixed inside the equipment housing (1) and located below the feed inlet (2). The movable crushing jaw (24) is installed opposite to the fixed crushing jaw (23). A crushing chamber (25) and a crushing gap (26) are formed between the movable crushing jaw (24) and the fixed crushing jaw (23). The movable crushing jaw (24) can be driven by a crusher driver to generate crushing motion.

8. The dust removal equipment for stone crushing according to claim 7, characterized in that, The movable crusher jaw (24) is located in the middle of the inner side of the equipment housing (1). A buffer mechanism (27) connected to the movable crusher jaw (24) is installed on the side of the equipment housing (1) opposite to the fixed crusher jaw (23).

9. The dust removal equipment for stone crushing according to any one of claims 1-3, characterized in that, The conveying device (4) is a conveyor belt device.

10. A method of using the dust removal equipment for stone crushing as described in claim 4, characterized in that, Start the first cyclone dust collector (5), the second cyclone dust collector (9), and the third cyclone dust collector (19), and start the crushing device and the conveying device (4). Feed the stone into the equipment housing (1) from the feed port (2). The crushing device crushes the stone, and the crushed stone is conveyed to the outside of the equipment housing (1) by the conveying device (4). Small stones and dust particles generated during the crushing process enter the first cyclone dust collector (5) and the second cyclone dust collector (9) through the first air inlet pipe (6) and the second air inlet pipe (10). After purification, the dust particles enter the second dust pipe (16) and are discharged. Smaller stones with smaller particle sizes enter the first dust pipe (15). The material is fed into the conveying device (4) through the opening of the first dust pipe (15); the larger-diameter small gravel returns to the equipment housing (1) through the first dust removal port (8) and the second dust removal port, and is transported to the outside of the equipment housing (1) together with the crushed gravel by the conveying device (4); the dust generated by the opening of the first dust pipe (15) enters the third cyclone dust collector (19) through the third air inlet pipe (20) for dust removal, and the dust particles are discharged through the third dust pipe (21); when the use ends, first stop feeding, close the crushing device and the conveying device (4), and finally close the first cyclone dust collector (5), the second cyclone dust collector (9) and the third cyclone dust collector (19).

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