Double-roller crushing production line

Abstract

The utility model relates to the field of crushing equipment, in particular to a double-roller crushing production line which comprises a discharging hopper, a double-roller crusher and a screening mechanism which are sequentially arranged from top to bottom, a raw material outlet is formed in the bottom of the discharging hopper, a crushing inlet is formed in the top of the crusher, and a material guide plate inclining downwards is arranged at the raw material outlet. The free end of the guide plate extends into the crushing inlet, shielding pieces are arranged on the periphery of the discharging hopper and define a dust removal space, the raw material outlet, the guide plate and the crushing inlet are located in the dust removal space, the shielding pieces are connected with a dust removal pipe, one end of the dust removal pipe is communicated with the dust removal space, and the other end of the dust removal pipe is connected with a dust remover. According to the utility model, the material guide plate is adopted to guide materials in an open manner, so that the raw materials are prevented from being blocked in a closed pipeline, and the explosion risk caused by the accumulation of a large amount of dust in the crusher is avoided.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment, specifically to a double roll crushing production line. Background Technology

[0002] When refining raw materials such as silicon, a double-roll crusher is generally used. During crushing, the raw material is fed into a hopper, continuously fed into the crusher below. After crushing, the material is discharged to a screening mechanism below for sieving. During the crushing process, dust removal is required at locations prone to dust generation, such as the feed inlet. For example, existing technologies disclose alloy additive crushing and screening systems with dust collection capabilities. However, these systems still have the following problems in practical application:

[0003] 1. Raw materials are transferred between the hopper and the crusher via pipelines, creating a relatively enclosed space inside the crusher. During the crushing process, a large amount of dust accumulates inside the crusher. At the same time, the heat generated during the crushing operation continuously builds up. The combined effect of these two factors greatly increases the risk of an explosion inside the crusher, posing a serious threat to the safe operation of the equipment and the production environment.

[0004] 2. Using pipelines to transport raw materials has significant drawbacks. During transport, raw materials are highly susceptible to blockages within the pipelines. Once a blockage occurs, cleaning is not only time-consuming and labor-intensive, but also requires substantial human and material resources, severely impacting production efficiency and increasing production costs. Utility Model Content

[0005] The present invention aims to provide a double-roll crushing production line to solve the problem of the large explosion risk in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The double roll crushing production line includes a hopper, a double roll crusher, and a screening mechanism arranged from top to bottom. The bottom of the hopper has a raw material outlet, and the top of the double roll crusher has a crushing inlet. An inclined guide plate is installed at the raw material outlet, and the free end of the guide plate extends into the crushing inlet. The hopper is surrounded by shielding components, which form a dust removal space. The raw material outlet, guide plate, and crushing inlet are located within the dust removal space. A dust removal pipe is connected to the shielding components. One end of the dust removal pipe is connected to the dust removal space, and the other end of the dust removal pipe is connected to a dust collector.

[0008] Preferably, as an improvement, the shielding component includes a shielding plate and a dust curtain, the shielding plate being disposed on both sides and the back of the hopper, and the dust curtain being disposed on the front side of the hopper and located in front of the crushing inlet.

[0009] Preferably, as an improvement, the sidewall of the guide plate is provided with a side plate.

[0010] Preferably, as an improvement, the dust curtain is composed of multiple rigid dust-blocking sheets, with the top of the dust-blocking sheets connected to the hopper.

[0011] Preferably, as an improvement, the dust baffle is detachably connected to the hopper.

[0012] Preferably, as an improvement, the guide plate includes a fixed guide plate and a movable guide plate. The top of the fixed guide plate is detachably connected to the raw material outlet. Two supports are fixed on the top of the crushing inlet near the hopper. The bottom of the fixed guide plate is fixedly connected between the two supports. The top of the movable guide plate is rotatably connected between the two supports. The side wall of the movable guide plate fits against the side wall of the crushing inlet. The movable guide plate can rotate to block the crushing inlet.

[0013] Preferably, as an improvement, the free end of the movable guide plate is connected to a fixing rope, and a fixing hook for attaching the fixing rope is provided on the outer wall of the side of the crushing inlet opposite to the rotating shaft.

[0014] The principles and beneficial effects of this solution are as follows:

[0015] 1. In practical application, raw materials are fed into the hopper and continuously conveyed to the double-roll crusher below for crushing. The crushed material is then discharged into the screening mechanism for further processing. In existing technology, the hopper and crusher are connected by a pipeline, creating a sealed interior for the crusher and increasing the risk of explosion. This application, however, installs a downward-sloping guide plate at the bottom of the hopper's raw material outlet, with its free end extending directly into the crushing inlet at the top of the double-roll crusher. This design allows the raw material to smoothly enter the double-roll crusher along the guide plate, effectively preventing blockage in the closed pipeline and breaking the relatively sealed space created by the pipeline connection inside the crusher, thus avoiding the accumulation of large amounts of dust inside the double-roll crusher and increasing the risk of explosion. Furthermore, side plates are installed on the sidewalls of the guide plate to prevent raw material from falling off.

[0016] 2. Based on the above, this solution uses dust collection pipes and dust collectors to promptly remove dust generated when raw materials fall into the double-roll crusher. Furthermore, a baffle consisting of baffle plates and dust curtains is installed around the feed hopper to form a relatively enclosed dust collection space. The raw material outlet, guide plate, and crushing inlet are all located within this space. When dust is generated during the transmission and crushing process, the dust is confined within this dust collection space, preventing dust dispersion and ensuring that the dust collector promptly removes the dust, thereby reducing the dust concentration within the space and minimizing the risk of explosion due to dust accumulation.

[0017] 3. A shielding curtain is used on the front side of the dust removal space, corresponding to the crushing inlet, while the other sides are covered with shielding plates. This design allows operators to easily open the shielding curtains to observe the process of raw materials entering the double-roll crusher from the hopper via the guide plate. This facilitates timely detection of abnormalities such as obstructed feeding, ensuring smooth production. When the equipment requires maintenance, the shielding curtains allow maintenance personnel to more easily access the hopper, guide plate, and top area of ​​the double-roll crusher without removing complex shielding structures. This significantly shortens preparation time, improves maintenance efficiency, and reduces the risk of secondary damage to the equipment due to improper maintenance operations.

[0018] 4. The dust curtain is assembled from rigid dust-blocking sheets, which are less prone to swaying and more stable than fabric dust curtains. The multiple sheets also make it easy to open and observe the dust removal space. The dust-blocking sheets are detachably connected to the hopper for easy inspection and replacement.

[0019] 5. This design employs a guide plate system consisting of a movable guide plate and a fixed guide plate. When the double roll crusher is operating, the movable guide plate can rotate into the crushing inlet, working in conjunction with the fixed guide plate to guide the raw material smoothly into the crusher. The combined larger guide area ensures the stability and smoothness of the material during transport, preventing material accumulation or spillage due to obstructed flow. When the equipment is not in use, the movable guide plate can be rotated out to the top of the crushing inlet, effectively shielding it and preventing external debris such as dust and small particles from falling into the crusher. This avoids damage to the precision components inside the crusher, affecting its lifespan and subsequent normal operation. Furthermore, the fixing rope connected to the free end of the movable guide plate, along with the fixing hooks on the outer wall of the crushing inlet, can secure the movable guide plate when it shields the crushing inlet, ensuring positional stability. Attached Figure Description

[0020] Figure 1 This is a side view of Embodiment 1 of the present utility model.

[0021] Figure 2 This is a front view of Embodiment 1 of this utility model.

[0022] Figure 3 This is a partial side view of Embodiment 1 of the present utility model.

[0023] Figure 4 This is a schematic diagram of the material guide plate in Embodiment 2 of this utility model. Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method:

[0025] The reference numerals in the accompanying drawings include: hopper 1, raw material outlet 11, shield 2, shield plate 21, dust curtain 22, hanging groove 23, hanging ear 24, dust removal pipe 3, double roll crusher 4, guide plate 5, fixed guide plate 51, movable guide plate 52, fixed rope 53, and fixed hook 54.

[0026] Example 1:

[0027] like Figure 1 and Figure 3 As shown, the double-roll crushing production line includes a feeding hopper 1, a double-roll crusher 4, and a screening mechanism (not shown in the figure) arranged sequentially from top to bottom. The screening mechanism adopts an electric screening bed in the prior art, which will not be described in detail in this embodiment. The feeding hopper 1 is supported by a frame, and a raw material outlet 11 is opened at the bottom of the feeding hopper 1. A crushing inlet 41 is opened at the top of the double-roll crusher 4. An inclined guide plate 5 is welded to the raw material outlet 11. The free end of the guide plate 5 extends into the crushing inlet 41, and side plates are also welded to the two side walls of the guide plate 5.

[0028] The feeding hopper 1 is surrounded by baffles 2, forming a dust removal space. The raw material outlet 11, guide plate 5, and crushing inlet 41 are located within this dust removal space. The baffles 2 include baffle plates 21 and dust curtains 22. The sides and back of the feeding hopper 1 are covered with baffle plates 21, which are made of steel plates and welded to the outer wall of the feeding hopper 1. A dust removal pipe 3 is connected to the baffles 2 on the back of the feeding hopper 1. One end of the dust removal pipe 3 communicates with the dust removal space, and the other end is connected to a dust collector, which is a baghouse dust collector. Figure 2 As shown, the dust curtain 22 is located in front of the hopper 1 and in front of the crushing inlet 41. The dust curtain 22 is composed of multiple rigid plastic dust-blocking sheets, the tops of which are detachably connected to the hopper 1. Specifically, a connecting strip is fixed to the top of the dust-blocking sheet by screws. Multiple T-shaped hanging ears 24 are integrally formed on the connecting strip. A fixing strip is welded to the outer wall of the hopper 1, and the fixing strip has multiple T-shaped hanging grooves 23. By hanging the hanging ears 24 in the hanging grooves 23, the dust-blocking sheet can be detachably installed on the hopper 1. Figure 2 The image shows the hanging ear 24 hanging in the hanging slot 23. The dust baffle can also be directly and detachably installed on the feed hopper 1 with bolts, or it can be detachably installed using Velcro.

[0029] In practical application, the raw material is poured into the feed hopper 1, and continuously falls from the raw material outlet 11 at the bottom of the feed hopper 1 into the double roll crusher 4 for fine crushing. The crushed raw material is then discharged to the screening mechanism below for screening. In this embodiment, the raw material is guided by the guide plate 5, allowing it to fall smoothly into the double roll crusher 4. The open guide method not only reduces the risk of material blockage but also avoids the problem of increased explosion risk due to dust accumulation caused by enclosed structures. Furthermore, this solution uses the shielding component 2 to concentrate dust in the dust removal space, which not only prevents dust dispersion but also allows the dust collector to promptly remove the generated dust, further reducing the risk of explosion caused by dust accumulation.

[0030] Example 2:

[0031] Combination Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the guide plate 5 includes a fixed guide plate 51 and a movable guide plate 52. The top end of the fixed guide plate 51 is detachably connected to the raw material outlet 11 by bolts. Two supports are welded to the top of the crushing inlet 41 near the hopper 1. The bottom end of the fixed guide plate 51 is connected between the two supports. The top end of the movable guide plate 52 is rotatably connected between the two supports. The side wall of the movable guide plate 52 fits against the side wall of the crushing inlet 41, and the movable guide plate 52 can rotate to block the crushing inlet 41. A fixing rope 53 is connected to the free end of the movable guide plate 52. A fixing hook 54 for attaching the fixing rope 53 is provided on the outer wall of the crushing inlet 41 on the side opposite to the rotating shaft.

[0032] In this embodiment, during normal operation of the equipment, the movable guide plate 52 rotates into the crushing inlet 41, and the top end of the movable guide plate 52 aligns with the bottom end of the fixed guide plate 51 to form a complete guide plate 5 for material guidance. Figure 4 The state shown. When the equipment is not in use, pull the fixed rope 53 to rotate the movable guide plate 52 from inside the crushing inlet 41 to the top of the crushing inlet 41. Use the movable guide plate 52 to block the crushing inlet 41 to prevent debris, dust and other objects from falling into the double roll crusher 4 during periods of non-use.

[0033] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pair of roller crushing production line, comprising a lower hopper, a pair of roller crusher and a screening mechanism arranged in sequence from top to bottom, the bottom of the lower hopper is provided with a raw material outlet, and the top of the pair of roller crusher is provided with a crushing inlet, characterized in that: The raw material outlet is provided with an inclined downward guide plate, the free end of the guide plate extends into the crushing inlet, the periphery of the lower hopper is provided with a shielding piece, the shielding piece encloses a dust removal space, the raw material outlet, the guide plate and the crushing inlet are located in the dust removal space, a dust removal pipe is connected to the shielding piece, one end of the dust removal pipe communicates with the dust removal space, and the other end of the dust removal pipe is connected with a dust remover.

2. The pair-roller crushing line according to claim 1, characterized in that: The shielding piece comprises a shielding plate and a dust blocking curtain, the shielding plate is arranged on the two sides and the back of the lower hopper, and the dust blocking curtain is arranged on the front side of the lower hopper and located in front of the crushing inlet.

3. The pair-roller crushing line according to claim 2, characterized in that: The sidewall of the guide plate is provided with a side plate.

4. The pair-roller crushing line according to claim 3, characterized in that: The dust blocking curtain is composed of a plurality of hard dust blocking pieces, and the top end of each dust blocking piece is connected to the lower hopper.

5. The pair-roller crushing line according to claim 4, characterized in that: The dust blocking pieces are detachably connected to the lower hopper.

6. The pair-roller crushing line according to claim 5, characterized in that: The guide plate comprises a fixed guide plate and a movable guide plate, the top end of the fixed guide plate is detachably connected to the raw material outlet, two supports are fixed to the top of the crushing inlet and close to one side of the lower hopper, the bottom end of the fixed guide plate is fixedly connected between the two supports, the top end of the movable guide plate is rotatably connected between the two supports, the sidewall of the movable guide plate is attached to the sidewall of the crushing inlet, and the movable guide plate can rotate to shield the crushing inlet.

7. The pair-roller crushing line according to claim 6, characterised in that: The free end of the movable guide plate is connected with a fixing rope, and the outer wall of the side of the crushing inlet opposite to the rotating shaft is provided with a fixing hook for sleeving the fixing rope.

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