Dust reduction device for stone processing

Abstract

The utility model belongs to the technical field of industrial dust removal, and particularly relates to a dust reduction device for stone processing. The dust collection device comprises a dust collection assembly used for collecting dust-containing gas and a conveying pipe connected with the dust collection assembly and used for conveying the dust-containing gas, and the dust collection assembly comprises a dust collection probe extending towards the stone crushing position; the end, away from the dust collection assembly, of the conveying pipe is connected with an air source used for providing dust collection power and a dust collection device located below the air source at the same time. And a filtering device for intercepting dust in the dusty gas is arranged between the dust collecting device and the gas source and in the conveying pipe. Through the design of the dust collection probe, the problem that the dust collection efficiency is not high in the large-size stone machining process is effectively solved, meanwhile, through the cooperation of the filtering device and the dust collection device, the self-cleaning effect of the filtering device is achieved, and the cleaning period of the device is greatly prolonged. The dust reduction device is simple in structure, excellent in dust reduction effect and suitable for popularization and application in production practice.

Description

Technical Field

[0001] This utility model belongs to the field of industrial dust removal technology, specifically relating to a dust reduction device for stone processing. Background Technology

[0002] Mainstream crushing methods in stone processing all generate dust, which overflows and disperses from the feed inlet of the equipment. Existing technologies include methods such as air extraction within the equipment to reduce internal dust and facilitate maintenance. However, in crushers like roller and jaw crushers, the crushing point is near the feed inlet, located above the equipment, limiting the effectiveness of internal dust extraction in handling dust emitted from the feed inlet. For example, CN119771544A describes a common stone crusher with movable and fixed jaw plates close to the feed inlet, with a large distance between them, resulting in significant dust generation during stone processing.

[0003] To address the significant dust generated during stone crushing, targeted treatment devices exist on the market. For example, patent CN220802407U discloses a stone processing dust removal device. This solution features a dust collection box equipped with a filter, removing dust by passing dust-laden gas through the box. However, this solution occupies a large area, and because the dust-laden gas needs to enter from the side of the dust collection box, its dust removal efficiency is low. Another example is a stone processing dust removal and cleaning device disclosed in patent CN217725646U. This solution uses a conical suction head at the top of the stone crusher, employing an air pump to extract dust generated during crushing. However, when the stone is large, the dust generated below the stone is difficult to remove by the conical suction head due to obstruction, resulting in insufficient dust removal efficiency. Furthermore, while this solution includes a filter and a dust cleaning device, the cleaning device requires additional power, and the cleaning effect using a brush is poor. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of existing technologies in stone processing, such as poor dust removal effect and difficulty in cleaning filtered dust, and provides a stone processing dust reduction device to overcome the above-mentioned defects.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A dust reduction device for stone processing includes a dust-collecting component for absorbing dust-laden gas and a conveying pipe connected to the dust-collecting component for conveying the dust-laden gas. The dust-collecting component includes a dust-collecting probe extending toward the stone crushing area.

[0007] The end of the delivery pipe furthest from the dust collection component is connected to an air source for providing dust collection power, and a dust collection device located below the air source.

[0008] Between the dust collection device and the gas source, a filter device is installed in the conveying pipe to intercept dust in the dust-laden gas.

[0009] In stone processing, large stones need to be crushed into different sizes by crushers to facilitate subsequent processing. During the stone crushing process, when high-intensity mechanical energy acts on the stone matrix, the contact surface between the blades and the stone experiences intense friction, impact, and compression, causing the surface crystalline structure of the stone to break down. This process generates a large amount of dust. The most common large stone crushing device on the market is the jaw crusher. When a jaw crusher is working, the movable jaw plate reciprocates periodically against the fixed jaw plate, sometimes approaching and sometimes moving away. When approaching, the stone is crushed by compression, splitting, and impact between the two jaw plates. Because the feed inlet of a jaw crusher is conical, wider at the top and narrower at the bottom, the crushing process is concentrated at the lower part of the stone, and dust is also mostly generated there. Therefore, when the volume of the stone being processed is large, the stone itself can trap dust, severely reducing the dust removal efficiency of commonly used dust collection devices. Therefore, this invention incorporates a dust collection probe extending towards the stone crushing area on the dust collection component. Specifically, the probe is positioned as low as possible, probing into the crusher's feed inlet to be close to the movable and fixed jaw plates. The minimum distance between the dust collection probe and the movable jaw plate is equal to the maximum diameter of the largest stone. This allows the dust collection probe to absorb dust as soon as it appears, preventing dust from escaping due to equipment disturbance and significantly improving dust removal efficiency.

[0010] Traditional dust collection devices typically use filters to trap particulate matter, preventing it from entering and damaging components like air pumps. However, the large quantity and fine texture of dust generated during stone processing make it highly susceptible to clogging of filters due to electrostatic and mechanical forces. While filters can be cleaned using mechanical vibration, pulses, or sound waves, these methods require additional power, increasing both device size and cost. Therefore, this invention connects an air source to a dust collection device at the end of the conveying pipe, with a filter installed between them. This allows the dust-laden gas to be diverted by the filter, with the gas entering the air source while the particulate matter is trapped. Under gravity, some of the particulate matter enters the dust collection device. Because the suction component is closer to the crusher's inlet, it draws in larger-diameter stone particles during the suction process. Even if some dust accumulates in the filter, it will vibrate and dislodge under the impact of the stone particles, achieving a self-cleaning effect and significantly extending the device's cleaning cycle.

[0011] Preferably, the dust collection probe is sealed at the bottom and has an air inlet on the side that communicates with the air source. The dust collection probe of this invention is cylindrical, designed to fit the movable and fixed jaw plates of a jaw crusher, thus facilitating dust collection. If the movable jaw plate has the freedom of movement in the longitudinal and lateral directions, the dust collection probe can be better distributed along the front-back direction of the movable and fixed jaw plates, thereby capturing dust drifting out of the jaw crusher and improving adaptability. The dust collection probe of this application can also be used at any crusher inlet with one long side and one short side, such that the long side of the dust collection probe extends along the long side of the inlet until it approaches the wide side.

[0012] As a further preferred embodiment, the vacuuming assembly also includes an adapter for connecting the vacuum probe to the delivery tube. The adapter is designed to transition the flat opening of the vacuum probe to a round opening, thereby facilitating connection to a rigid round tube or aluminum foil smoke tube.

[0013] Preferably, the conveying pipe includes a first connecting pipe for connecting to an air source and a second connecting pipe for connecting to a dust collection device.

[0014] Preferably, the dust collection device includes a dust collection bin.

[0015] Preferably, the filtration device includes a filter element and an extension bracket for connecting the filter element to the dust collection device. In practice, a design integrating the dust collection bin and filter element can be used, allowing the filter element to be removed and cleaned when cleaning the dust collection bin. The extension bracket design brings the filter element closer to the air source while providing space for dust to fall. In practice, the filtration device can employ a pre-filter, a filter layer composed of activated carbon mesh and filter cotton, or a metal filter element.

[0016] As a further preferred embodiment, the filtering device also includes a flange disposed within the delivery pipe for engaging the filter element. The filter element can be stably clamped between the extension bracket and the flange through their cooperation.

[0017] Preferably, the dust reduction device further includes a fixing bracket connected below the conveying pipe for fixing the conveying pipe.

[0018] Preferably, the air source is a dual-purpose suction and exhaust fan or a turbine centrifugal exhaust fan.

[0019] As a further preferred embodiment, the dust reduction device also includes a support frame for fixing the air source to the ground. By fixing the air source to the ground, the impact of air source vibration on the dust reduction device is reduced.

[0020] Therefore, this utility model has the following beneficial effects:

[0021] (1) This utility model effectively solves the problem of low dust removal efficiency in the process of processing large volume stone by designing a dust suction probe. At the same time, it can be well adapted to the existing jaw crusher and improve its dust removal effect in the process of processing large volume stone.

[0022] (2) This utility model achieves the self-cleaning effect of the filter device by combining the filter device and the dust collection device, which greatly extends the cleaning cycle of the device.

[0023] (3) The present invention has a simple structure and does not require modification of existing stone processing equipment, thus achieving a good dust reduction effect. It is suitable for promotion and application in production practice. Attached Figure Description

[0024] Figure 1 This is a front view of a dust reduction device for stone processing according to an embodiment of the present utility model.

[0025] Figure 2 This is a side view of a dust reduction device for stone processing according to an embodiment of the present utility model.

[0026] Figure 3 This is a schematic diagram of the dust collection component structure of a stone processing dust reduction device according to an embodiment of the present utility model.

[0027] Figure 4 This is a schematic diagram of the conveying pipe structure of a dust reduction device for stone processing according to an embodiment of the present utility model.

[0028] Figure 5 This is a schematic diagram of the dust collection device and the filter device of a stone processing dust reduction device according to an embodiment of the present utility model.

[0029] In the diagram: 1. Air source; 2. Fixed bracket; 3. Support frame; 10. Dust collection assembly; 11. Dust collection probe; 12. Air inlet; 13. Adapter; 20. Delivery pipe; 21. First connecting pipe; 22. Second connecting pipe; 30. Dust collection device; 31. Dust collection bin; 40. Filter device; 41. Filter sheet; 42. Extension frame; 43. Flange. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Those skilled in the art will be able to implement the present invention based on these descriptions. Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0031] Example:

[0032] This embodiment provides a dust reduction device for stone processing, such as... Figure 1 As shown, from left to right, the dust collection assembly 10 is positioned above the movable jaw plate and the fixed jaw plate of the jaw crusher. The dust collection assembly 10 is connected to a horizontally placed conveying pipe 20 via a conical adapter 13. The end of the conveying pipe 20 is divided into an upward-opening first connecting pipe 21 and a downward-opening second connecting pipe 22. The first connecting pipe 21 is connected to an air source 1, which in this embodiment is specifically a turbine centrifugal exhaust fan with a brushless motor. The second connecting pipe 22 is connected to a dust collection device 30. Through this structure, the dust-laden gas generated at the crushing point of the jaw crusher is absorbed by the dust collection assembly 10, passes through the conveying pipe 20 to the end, and, filtered by the filter device 40, enters the air source 1 through the first connecting pipe 21. The dust is trapped by the filter device 40 and falls into the dust collection device 30 below.

[0033] For the stable operation of dust reduction devices, such as Figure 2 As shown, in this embodiment, a fixed support 2 is provided below the conveying pipe 20 and fixed to the ground. The top of the fixed support is used to support the conveying pipe 20, and the dust collection assembly 10 is fixed to the side of the fixed support 2, thereby reducing the impact of the high-speed movement of gas in the dust collection assembly 10 and the conveying pipe 20 on the stability of the device. At the same time, the air source 1 is fixed to the ground by the support frame 3, reducing the impact of the vibration of the air source 1 on the dust reduction device.

[0034] like Figure 1 , 3 As shown, the dust collection assembly 10 of this embodiment includes a flat, cylindrical dust collection probe 11 with an open top. The dust collection probe 11 extends along the long side of the jaw crusher's feed inlet until it approaches the wide side. The front and rear ends of this embodiment are convex arc-shaped to increase the suction area of ​​the dust collection probe 11. Longitudinal strip-shaped air inlets 12 are evenly distributed on the sides of the dust collection probe 11. The width of the air inlets 12 is 2mm. The bottom of the dust collection probe 11 is closed. This design prevents excessively large stones from entering the device and also indirectly increases the suction force of the air inlets 12. An adapter 13 is fixed to the top of the dust collection probe 11, thereby transitioning the flat opening of the dust collection probe 11 to a round opening, facilitating connection with the circular conveying pipe 20.

[0035] Under the influence of air source 1, the dust-laden gas passes through conveying pipe 20 and reaches the space between first connecting pipe 21 and second connecting pipe 22. This structure is crucial for the dust removal and self-cleaning capabilities of the dust reduction device in this embodiment. Figure 4 As shown, an inwardly protruding flange 43 is fixedly provided on the first connecting pipe 21, and an internal thread is provided on the second connecting pipe 22. Figure 5As shown, the main body of the dust collection device 30 is a dust collection bin 31. The dust collection bin 31 has an opening at the top with external threads. An upwardly extending extension frame 42 is fixed at the opening. The extension frame 42 includes four extension rods and a base at the end of the extension rods. The filter sheet 41 is placed in the base. In this embodiment, the filter sheet 41 is a thin metal sheet with evenly distributed air holes. In use, the external threads on the dust collection bin 31 are screwed into the internal threads on the second connecting pipe 22. At this time, the extension frame 42 passes through the second connecting pipe 22 and abuts against the flange 43 on the first connecting pipe 21, so that the filter sheet 41 is stably locked between the extension frame 42 and the flange 43. At this time, the dust-laden gas can pass through the gap between the extension rods and reach the filter sheet 41, achieving the effect of gas-solid separation. With the above structure, during daily use, when the dust collection bin 31 is full of dust, it can be removed together with the filter sheet for washing, which facilitates the daily maintenance of the dust reduction device.

[0036] For the aforementioned tubular parts, if the connection is between metal pipes, welding can be used; if the connection is between metal pipes and plastic pipes, or between plastic pipes, structural adhesive can be used. Alternatively, structural adhesive can be combined with additional blades and bolts, or heat fusion can be used to increase sealing. If aluminum foil smoke pipes are used, aluminum foil tape and clamps can be added for fixing to other pipe fittings. If the diameter of the delivery pipe 20 differs from that of the adapter 13 or other pipes, a conventional reducing pipe can be used for connection and fixing. These common construction techniques should not be used as a reason why this application cannot be implemented. On the other hand, defects unrelated to the inventive points of this application, such as sanitary dead corners, how to install similar support schemes, wiring layout, motor location, and motor type, should not be used as reasons why this application cannot be implemented. These problems should be addressed by the manufacturers providing the corresponding products through after-sales / technical support / installation services; or by carpentry or electrical work; or they should be considered as inventive points for other applications, and this application should not be used to simply pile up technical solutions, thus contributing unclaimed technical solutions.

[0037] It should be noted that if the feed inlet of the crusher is not top-opening but side / lateral-opening, only the installation direction of the dust suction probe 11 needs to be adapted and synchronized. Adaptive improvements to the installation position of the dust suction probe 11, without exceeding the principles and functions of this application, cannot be used as a reason for novelty, nor can they exceed the protection scope of this application.

[0038] The embodiments of this specification have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A dust reduction device for stone processing, characterized in that: It includes a dust-collecting assembly (10) for absorbing dust-laden gas, and a delivery pipe (20) connected to the dust-collecting assembly (10) for conveying the dust-laden gas. The dust-collecting assembly (10) includes a dust-collecting probe (11) extending toward the stone crushing area. The end of the delivery pipe (20) away from the dust collection assembly (10) is simultaneously connected to an air source (1) for providing dust collection power and a dust collection device (30) located below the air source (1). Between the dust collection device (30) and the gas source (1), a filter device (40) for intercepting dust in the dust-laden gas is provided in the conveying pipe (20).

2. The dust reduction device for stone processing according to claim 1, characterized in that: The bottom of the vacuum probe (11) is closed, and the side is provided with an air inlet (12) that is connected to the air source (1).

3. The dust reduction device for stone processing according to claim 2, characterized in that: The vacuum assembly (10) also includes an adapter (13) for connecting the vacuum probe (11) and the delivery tube (20).

4. The dust reduction device for stone processing according to claim 1, characterized in that: The delivery pipe (20) includes a first connecting pipe (21) for connecting to the air source (1) and a second connecting pipe (22) for connecting to the dust collection device (30).

5. A dust reduction device for stone processing according to claim 1, characterized in that: The dust collection device (30) includes a dust collection bin (31).

6. The dust reduction device for stone processing according to claim 1, characterized in that: The filtration device (40) includes a filter (41) and an extension frame (42) for connecting the filter (41) and the dust collection device (30).

7. A dust reduction device for stone processing according to claim 6, characterized in that: The filter device (40) also includes a flange (43) disposed inside the delivery pipe (20) for engaging the filter element (41).

8. A dust reduction device for stone processing according to claim 1, characterized in that: It also includes a fixing bracket (2) connected below the delivery pipe (20) for fixing the delivery pipe (20).

9. A dust reduction device for stone processing according to any one of claims 1-8, characterized in that: The air source (1) is a dual-purpose suction and exhaust fan or a turbine centrifugal exhaust fan.

10. A dust reduction device for stone processing according to claim 9, characterized in that: It also includes a support frame (3) that fixes the gas source (1) to the ground.

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