High-fine crusher for coal mine filling

Abstract

The utility model provides a high-fine crusher for coal mine filling, which comprises a shell and a dust falling component, a feeding channel, a first dust falling channel, an inner cavity, a second dust falling channel and a discharging channel are sequentially arranged in the shell from top to bottom, and a crushing component is mounted in the inner cavity of the shell. The dust falling assembly is mounted in the first dust falling channel and the second dust falling channel to intermittently seal the first dust falling channel and the second dust falling channel; materials sequentially pass through the feeding channel, the first dust falling channel, the inner cavity, the second dust falling channel and the discharging channel, the crushing assembly crushes the materials when passing through the inner cavity, the dust falling assembly can intermittently close the first dust falling channel and the second dust falling channel, flying dust is prevented from being sprayed out at a high speed when the materials are crushed in the inner cavity, and the crushing efficiency is improved. Flying dust is prevented from reducing the quality of the surrounding environment, and materials cannot be affected to pass through the first dust falling channel and the second dust falling channel.

Description

Technical Field

[0001] The utility model relates to the technical field of ore crushers, in particular to a high-fine crusher for coal mine filling. Background Art

[0002] Coal mine backfill usually uses coal gangue, sand, limestone, coke, cement, lime, fly ash, perlite, sand and soil and other materials. When preparing materials such as sand and gravel, large pieces of stone need to be crushed by a crusher to obtain fine sand and gravel, gravel and other materials. A crusher is needed to crush the stone;

[0003] The crusher is mainly composed of a shell, a power mechanism and a crushing shaft. The power mechanism is installed outside the shell. The power mechanism usually uses a motor and a reducer combination structure. The two crushing shafts rotate in the shell. The power mechanism drives the two crushing shafts to rotate. When the stone falls between the crushing shafts, it is squeezed and crushed by the two crushing shafts. The crushed fine sand, gravel and other materials fall out from the lower end of the shell.

[0004] However, the existing crushers have some defects, such as:

[0005] When crushing materials such as stones and abandoned coal blocks, crushers often produce large amounts of flying dust, which is ejected at high speed from the feed and discharge ports of the crusher, affecting the surrounding production environment. Therefore, existing crushers lack the function of reducing flying dust when crushing materials. Summary of the invention

[0006] The utility model provides a high-fine crusher for coal mine filling to solve the problems raised in the above background technology.

[0007] The technical solution of the utility model is achieved in this way:

[0008] A high-fine crusher for coal mine filling, comprising a shell and a dust reduction component;

[0009] Shell: The shell is provided with a feed channel, a first dust reduction channel, an inner cavity, a second dust reduction channel and a discharge channel from top to bottom, and a crushing assembly is installed in the inner cavity of the shell;

[0010] Dust reduction component: the dust reduction component is installed in the first dust reduction channel and the second dust reduction channel to intermittently close the first dust reduction channel and the second dust reduction channel;

[0011] By adopting the above technical scheme, the material passes through the feed channel, the first dust reduction channel, the inner cavity, the second dust reduction channel and the discharge channel in sequence. The crushing component crushes the material when passing through the inner cavity, and the dust reduction component can intermittently close the first dust reduction channel and the second dust reduction channel to avoid dust spraying when the material is crushed in the inner cavity, and will not affect the material passing through the first dust reduction channel and the second dust reduction channel.

[0012] Preferably, the crushing assembly includes a power assembly, a crushing shaft and a central shaft, the central shaft has two opposite sides that rotate through the inner cavity of the shell, the two central shafts are arranged in parallel, the two central shafts are located in a section of the shell and the crushing shafts are sleeved therein, the two crushing shafts have raised portions in a circular array and a linear array, the power assembly is installed between the two central shafts and the shell, and the power assembly drives the two central shafts to rotate in opposite directions;

[0013] By adopting the above technical solution, the power component drives the two central shafts to rotate in opposite directions, and the central shaft drives the two crushing shafts to rotate in opposite directions. When the material falls between the two crushing shafts, the crushing shafts and the raised parts crush the material, thereby achieving the function of crushing the material.

[0014] Preferably, the power assembly includes a motor and a gear, the gear has two parts and is respectively fixed at the ends of two central shafts, the two gear teeth are meshed, the motor is fixed to the side of the housing, and the output end of the motor is fixed to the rotation center of one of the gears;

[0015] By adopting the above technical solution, the motor drives one of the gears to rotate, the two gear teeth mesh and rotate in opposite directions at the same time, and the gears drive the two central shafts to rotate in opposite directions at the same time, thereby providing power for the rotation of the two central shafts.

[0016] Preferably, the dust reduction assembly includes a first dust reduction shield fan and a second dust reduction shield fan, the sides of the first dust reduction shield fan and the second dust reduction shield fan are both provided with fan blades in a circular array, the first dust reduction shield fan and the second dust reduction shield fan are respectively rotated in the first dust reduction channel and the second dust reduction channel, the first dust reduction channel and the second dust reduction channel are both cylindrical, the angles of the upper and lower end sides of the first dust reduction channel are both greater than the angle between two adjacent fan blades in the first dust reduction shield fan, and the angles of the upper and lower end sides of the second dust reduction channel are both greater than the angle between two adjacent fan blades in the second dust reduction shield fan;

[0017] By adopting the above technical scheme, the blades of the first dust reduction baffle fan and the second dust reduction baffle fan respectively block the first dust reduction channel and the second dust reduction channel to prevent flying dust from flying out of the first dust reduction channel and the second dust reduction channel. When the first dust reduction baffle fan and the second dust reduction baffle fan rotate, the material moves by being clamped between two adjacent blades, that is, while transporting the material, it also prevents the flying dust in the outer shell from flying out. Moreover, the angles of the upper and lower end sides of the first dust reduction channel are both greater than the angle between the two adjacent blades in the first dust reduction baffle fan, and the angles of the upper and lower end sides of the second dust reduction channel are both greater than the angle between the two adjacent blades in the second dust reduction baffle fan. This ensures that even if one of the blades does not contact the inner side of the first dust reduction channel or the second dust reduction channel, the other blade must contact the inner side of the first dust reduction channel or the second dust reduction channel, that is, the stability of the airflow closure of the first dust reduction channel or the second dust reduction channel is ensured.

[0018] Preferably, a power transmission assembly is provided between the two central shafts and the first dust reduction shield fan and the second dust reduction shield fan respectively, and the two central shafts drive the first dust reduction shield fan and the second dust reduction shield fan to rotate through the power transmission assembly while rotating;

[0019] By adopting the above technical solution, the rotation of the first dust reduction damper fan, the second dust reduction damper fan, the central axis and the crushing axis is synchronized, and no additional power source is required to drive the first dust reduction damper fan and the second dust reduction damper fan to rotate, thereby reducing production costs.

[0020] Preferably, the power transmission assembly includes a driving wheel, a transmission belt and a driven wheel;

[0021] In the power transmission assembly between the central shaft and the first dust reduction shield fan, the driving wheel and the driven wheel are respectively fixed to one end of the central shaft and the first dust reduction shield fan located outside the housing, and a transmission belt is sleeved between the driving wheel and the driven wheel and connected through the transmission belt;

[0022] In the power transmission assembly between the other central shaft and the second dust reduction shield fan, the driving wheel and the driven wheel are respectively fixed to the other central shaft and one end of the second dust reduction shield fan outside the housing, and a transmission belt is sleeved between the driving wheel and the driven wheel and connected through the transmission belt;

[0023] By adopting the above technical solution, the central shaft drives the driving wheel to rotate, the driving wheel drives the passive wheel to rotate through the transmission belt, and the two passive wheels respectively drive the first dust reduction shield fan and the second dust reduction shield fan to rotate, thereby transmitting the rotational power of the central shaft to the first dust reduction shield fan and the second dust reduction shield fan.

[0024] Preferably, an opening is provided on the upper side of the inner cavity of the shell and a sealing cover is provided inside the opening;

[0025] By adopting the above technical solution, the opening on the upper side of the inner cavity can be exposed by opening the cover, and the internal situation of the shell can be observed from the opening, so as to observe the material crushing situation and to facilitate the maintenance of the internal parts of the shell.

[0026] Preferably, a bellows is detachably fixed to the lower end of the discharge channel of the housing by screws, and an external connecting pipe is fixed to the lower end of the bellows;

[0027] By adopting the above technical solution, the bellows can be retracted to ensure that the external connecting pipe can be directly connected to the external gravel receiving device, so that gravel and dust can directly fall into the external gravel receiving device, avoiding the leakage of flying dust into the external air.

[0028] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0029] In the utility model, the material is made to pass through the feed channel, the first dust reduction channel, the inner cavity, the second dust reduction channel and the discharge channel in sequence. The crushing component crushes the material when passing through the inner cavity, and the dust reduction component can intermittently close the first dust reduction channel and the second dust reduction channel to avoid high-speed ejection of flying dust when the material is crushed in the inner cavity, to avoid the flying dust from reducing the quality of the surrounding environment, and will not affect the material passing through the first dust reduction channel and the second dust reduction channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 It is a three-dimensional diagram of the utility model;

[0032] Figure 2 It is the front view of the utility model;

[0033] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA;

[0034] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at BB;

[0035] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure at CC;

[0036] Figure 6 for Figure 2 Schematic diagram of the cross-sectional structure at DD.

[0037] Among them: 1. Cover; 2. Shell; 3. Bellows; 4. External connecting pipe; 5. Power assembly; 51. Motor; 52. Gear; 6. Power transmission assembly; 61. Driving wheel; 62. Transmission belt; 63. Passive wheel; 7. Feed channel; 8. First dust reduction channel; 9. First dust reduction baffle; 10. Crushing shaft; 11. Center shaft; 12. Second dust reduction channel; 13. Second dust reduction baffle; 14. Discharge channel. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0039] See also Figure 1 and Figure 4 , a high fine crusher for coal mine filling, comprising a housing 2 and a dust suppression component;

[0040] Shell 2: The shell 2 is provided with a feed channel 7, a first dust reduction channel 8, an inner cavity, a second dust reduction channel 12 and a discharge channel 14 from top to bottom, and the feed channel 7, the first dust reduction channel 8, the inner cavity, the second dust reduction channel 12 and the discharge channel 14 are connected, the lower end of the discharge channel 14 provided in the shell 2 is detachably fixed with a bellows 3 by screws, the lower end of the bellows 3 is fixed with an external connecting pipe 4, and the bellows 3 and the external connecting pipe 4 can also be removed when the bellows 3 and the external connecting pipe 4 are not needed, an opening is provided on the upper side of the inner cavity of the shell 2 and a sealing cover 1 is provided in the opening, the inner cavity of the shell 2 can be observed through the opening, and a crushing component is installed in the inner cavity of the shell 2;

[0041] Dust reduction component: The dust reduction component is installed in the first dust reduction channel 8 and the second dust reduction channel 12 to intermittently close the first dust reduction channel 8 and the second dust reduction channel 12.

[0042] In this embodiment, the crushing assembly includes a power assembly 5, a crushing shaft 10 and a central shaft 11. Figure 4 and Figure 5 The central shafts 11 have two and both rotate through two opposite sides of the inner cavity of the shell 2. The two central shafts 11 are arranged in parallel. The two central shafts 11 are located in a section of the shell 2 and are sleeved with a crushing shaft 10. The two crushing shafts 10 have raised portions in a circular array and a linear array. The power assembly 5 is installed between the two central shafts 11 and the shell 2. The power assembly 5 drives the two central shafts 11 to rotate in opposite directions.

[0043] The power assembly 5 includes a motor 51 and a gear 52. Figure 5 There are two gears 52 which are respectively fixed at the ends of the two central shafts 11 , and the teeth of the two gears 52 are meshed. The motor 51 is fixed on the side of the housing 2 , and the output end of the motor 51 is fixed at the rotation center of one of the gears 52 .

[0044] In this embodiment, the dust reduction assembly includes a first dust reduction shield fan 9 and a second dust reduction shield fan 13. Figure 4 The sides of the first dust reduction shield fan 9 and the second dust reduction shield fan 13 are both provided with blades in a circular array. The first dust reduction shield fan 9 and the second dust reduction shield fan 13 rotate in the first dust reduction channel 8 and the second dust reduction channel 12 respectively. The first dust reduction channel 8 and the second dust reduction channel 12 are both cylindrical. The angles of the upper and lower end sides of the first dust reduction channel 8 are greater than the angle between the two adjacent blades in the first dust reduction shield fan 9, and the angles of the upper and lower end sides of the second dust reduction channel 12 are greater than the angle between the two adjacent blades in the second dust reduction shield fan 13.

[0045] In this embodiment, a power transmission assembly 6 is provided between the two central shafts 11 and the first dust reduction shielding fan 9 and the second dust reduction shielding fan 13, for details, see Figure 3 and Figure 6 The two central shafts 11 drive the first dust reduction shield fan 9 and the second dust reduction shield fan 13 to rotate through the power transmission component 6 while rotating. The power transmission component 6 includes a driving wheel 61, a transmission belt 62 and a driven wheel 63;

[0046] In the power transmission assembly 6 between the central shaft 11 and the first dust reduction shield fan 9, the driving wheel 61 and the driven wheel 63 are respectively fixed to one end of the central shaft 11 and the first dust reduction shield fan 9 located outside the housing 2, and a transmission belt 62 is sleeved between the driving wheel 61 and the driven wheel 63 and connected through the transmission belt 62;

[0047] In the power transmission assembly 6 between the other central shaft 11 and the second dust reduction shield fan 13, the driving wheel 61 and the driven wheel 63 are respectively fixed to the other central shaft 11 and one end of the second dust reduction shield fan 13 outside the housing 2, and a transmission belt 62 is sleeved between the driving wheel 61 and the driven wheel 63 and connected through the transmission belt 62;

[0048] In addition, the diameter of the driving wheel 61 may be smaller than the diameter of the driven wheel 63 , so that the rotational speeds of the first dust reduction shield fan 9 and the second dust reduction shield fan 13 are smaller than the rotational speed of the crushing shaft 10 .

[0049] Working principle:

[0050] When in use, the motor 51 is powered on to drive one of the gears 52 to rotate, and the teeth of the two gears 52 are meshed, so that the two gears 52 rotate simultaneously and in opposite directions, and the two gears 52 drive the two central shafts 11 to rotate simultaneously and in opposite directions, and the two central shafts 11 drive the two crushing shafts 10 to rotate simultaneously and in opposite directions;

[0051] At the same time, the two central shafts 11 drive the driving wheels 61 in the two power transmission components 6 to rotate, and the driving wheels 61 drive the passive wheels 63 to rotate through the transmission belts 62, and the two passive wheels 63 respectively drive the first dust reduction shielding fan 9 and the second dust reduction shielding fan 13 to rotate;

[0052] The material falls from the feed channel 7 into the first dust reduction channel 8, and the first dust reduction shield fan 9 drives the material to move and fall into the inner cavity of the outer shell 2. The material falls between the two crushing shafts 10 and is crushed. The crushed material falls into the second dust reduction channel 12 and is transported by the second dust reduction shield fan 13 and falls into the discharge channel 14. Finally, the material passes through the bellows 3 and the external connecting pipe 4 and falls into the external gravel receiving equipment.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-fine crusher for coal mine filling, characterized by: It comprises a housing (2) and a dust reduction component; Shell (2): the shell (2) is provided with a feed channel (7), a first dust reduction channel (8), an inner cavity, a second dust reduction channel (12) and a discharge channel (14) in order from top to bottom, and a crushing component is installed in the inner cavity of the shell (2); Dust reduction component: the dust reduction component is installed in the first dust reduction channel (8) and the second dust reduction channel (12) to intermittently close the first dust reduction channel (8) and the second dust reduction channel (12).

2. A high-fine crusher for coal mine filling according to claim 1, characterized in that: The crushing assembly comprises a power assembly (5), a crushing shaft (10) and a central shaft (11); the central shaft (11) has two opposite sides of the inner cavity of the outer shell (2) and both rotate through the inner cavity; the two central shafts (11) are arranged in parallel; the two central shafts (11) are located in a section of the outer shell (2) and are sleeved with the crushing shafts (10); the two crushing shafts (10) have raised portions in a circular array and a linear array; the power assembly (5) is installed between the two central shafts (11) and the outer shell (2); the power assembly (5) drives the two central shafts (11) to rotate in opposite directions.

3. A high-fine crusher for coal mine filling according to claim 2, characterized in that: The power assembly (5) comprises a motor (51) and gears (52). The two gears (52) are respectively fixed to the ends of two central shafts (11). The teeth of the two gears (52) are meshed. The motor (51) is fixed to the side of the housing (2). The output end of the motor (51) is fixed to the rotation center of one of the gears (52).

4. A high-fine crusher for coal mine filling according to claim 2, characterized in that: The dust reduction component comprises a first dust reduction shield fan (9) and a second dust reduction shield fan (13); the side surfaces of the first dust reduction shield fan (9) and the second dust reduction shield fan (13) are both provided with fan blades in a circular array; the first dust reduction shield fan (9) and the second dust reduction shield fan (13) are respectively rotated in a first dust reduction channel (8) and a second dust reduction channel (12); the first dust reduction channel (8) and the second dust reduction channel (12) are both cylindrical; the angles of the upper and lower end side surfaces of the first dust reduction channel (8) are both greater than the angle between two adjacent fan blades in the first dust reduction shield fan (9); the angles of the upper and lower end side surfaces of the second dust reduction channel (12) are both greater than the angle between two adjacent fan blades in the second dust reduction shield fan (13).

5. A high-fine crusher for coal mine filling according to claim 4, characterized in that: A power transmission assembly (6) is provided between the two central shafts (11) and the first dust reduction shield fan (9) and the second dust reduction shield fan (13), respectively. When the two central shafts (11) rotate, they drive the first dust reduction shield fan (9) and the second dust reduction shield fan (13) to rotate through the power transmission assembly (6).

6. A high-fine crusher for coal mine filling according to claim 5, characterized in that: The power transmission assembly (6) comprises a driving wheel (61), a transmission belt (62) and a driven wheel (63); In the power transmission assembly (6) between the central shaft (11) and the first dust reduction shield fan (9), the driving wheel (61) and the driven wheel (63) are respectively fixed to one end of the central shaft (11) and the first dust reduction shield fan (9) located outside the housing (2), and a transmission belt (62) is sleeved between the driving wheel (61) and the driven wheel (63) and the driving wheel (61) and the driven wheel (63) are connected by the transmission belt (62); In the power transmission assembly (6) between the other central shaft (11) and the second dust reduction shield fan (13), the driving wheel (61) and the driven wheel (63) are respectively fixed to the other central shaft (11) and one end of the second dust reduction shield fan (13) located outside the housing (2), and a transmission belt (62) is provided between the driving wheel (61) and the driven wheel (63) and the driving wheel is connected via the transmission belt (62).

7. A high-fine crusher for coal mine filling according to claim 1, characterized in that: An opening is arranged on the upper side of the inner cavity of the outer shell (2), and a sealing cover (1) is provided inside the opening.

8. A high-fine crusher for coal mine filling according to claim 1, characterized in that: A bellows (3) is detachably fixed to the lower end of the discharge channel (14) provided in the housing (2) by means of screws, and an external connecting pipe (4) is fixed to the lower end of the bellows (3).

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