A dust-proof electric unloading device

Abstract

The application discloses an electric unloading device capable of preventing dust from running, which comprises a sealing mechanism, a fixed sleeve fixedly connected to the side wall of a unloading box and sleeved on the periphery of a rotating shaft, a sealing bearing and an elastic sealing assembly arranged in the fixed sleeve, and an inner ring of the sealing bearing fixedly sleeved on the periphery of the rotating shaft; a second sealing mechanism, a sealing cavity formed between a sealing cover and the elastic sealing assembly is formed between the fixed sleeve and the rotating shaft, a feeding cylinder is interconnected on the fixed sleeve and communicates with the sealing cavity, the sealing cover is arranged at the end of the feeding cylinder away from the fixed sleeve, the sealing cavity is filled with lubricating grease through the feeding cylinder, and the lubricating grease cooperates with the elastic sealing assembly to form double sealing. The double sealing makes the dust-proof effect better and reduces the damage of dust to the sealing cover.

Description

Technical Field

[0001] This invention belongs to the technical field of ore unloading devices, and particularly relates to an electric ore unloading device that prevents ash from escaping. Background Technology

[0002] Ore unloading is the process of transporting mined ore from the mining face or other storage facilities to the surface or other processing facilities for processing, sorting, or transportation using equipment such as conveyors and hoists. Ore unloading is a crucial part of mining production, directly affecting mining efficiency, safety, and resource utilization.

[0003] Unloading devices are commonly used in the process of unloading ore. Most existing unloading devices use a rotating shaft to drive conveyor blades to transport and unload ore. However, during the rotation of the shaft, dust in the ore is prone to "dust running out", that is, dust runs out from the connection of the shaft. This not only easily damages the bearings, but also pollutes the environment. Summary of the Invention

[0004] To address the problems in the prior art, the present invention proposes the following technical solution:

[0005] An electric ore unloading device for preventing ash spillage includes an ore unloading box and an ore unloading mechanism. The top of the ore unloading box is connected to a feed inlet, and the bottom of the ore unloading box is connected to a discharge outlet. The ore unloading mechanism includes a rotating shaft passing through the ore unloading box, spiral conveying blades installed around the rotating shaft, and a motor installed at one end of the rotating shaft. The device is characterized in that it further includes:

[0006] A sealing mechanism includes a fixed sleeve that is fixedly connected to the side wall of the unloading box and sleeved around the rotating shaft. The fixed sleeve is provided with a sealing bearing and an elastic sealing assembly, and the inner ring of the sealing bearing is fixedly sleeved around the rotating shaft.

[0007] The double sealing mechanism has a sealing cavity formed between the fixed sleeve and the rotating shaft, located between the sealing cover and the elastic sealing assembly. The fixed sleeve is connected to a feed cylinder, which is connected to the sealing cavity. A sealing cover is provided at the end of the feed cylinder away from the fixed sleeve. Lubricating grease is filled into the sealing cavity through the feed cylinder. The lubricating grease, together with the elastic sealing assembly, forms a double seal.

[0008] The ore enters the unloading box from the feed inlet and is temporarily stored inside. When unloading is required, the motor drives the rotating shaft and the screw conveyor blades to rotate. The rotating screw conveyor blades transport the ore inside the unloading box to the discharge port for unloading. The unloading speed can be controlled by controlling the rotation speed of the screw conveyor blades by the motor.

[0009] During the ore unloading process, the elastic sealing component can play a primary role in sealing and preventing dust from escaping. When dust passes through the elastic sealing component and enters the sealing cavity, the grease inside the sealing cavity further enhances the dust-preventing efficiency, making the overall dust-preventing effect better. Moreover, the grease reduces the damage of dust to the sealing cover.

[0010] As a preferred embodiment of the above technical solution, the elastic sealing assembly includes a movable collar fixedly sleeved around the outer periphery of the rotating shaft and a stationary collar fixedly connected to the inner wall of the fixed sleeve. A compression collar is slidably connected to the outer edge of the stationary collar. A sealing ring is provided between the compression collar and the movable collar. A fixed cylinder is fixedly connected to the outer side wall of the stationary collar. A first piston is provided inside the fixed cylinder. A spring is fixedly connected between the first piston and the compression collar.

[0011] It should be noted that the outer circumference of the sealing ring fits against the inner wall of the fixed sleeve. Under the elastic force of the spring, it pushes the compression ring to slide on the outer edge of the stationary ring, thereby compressing the sealing ring to achieve the sealing effect.

[0012] As a preferred embodiment of the above technical solution, both the inner edge of the moving collar and the outer edge of the extrusion collar are provided with protrusions.

[0013] By setting the protrusion, the sealing ring can be limited, ensuring that during the compression sealing process, the sealing ring can always be at the junction of the compression ring and the moving ring, thus ensuring the stability of the seal.

[0014] As a preferred embodiment of the above technical solution, the outer side wall of the moving collar is flush with the inner side wall of the unloading box.

[0015] The flush design not only reduces damage to the outer wall of the moving sleeve during ore unloading and feeding, but also reduces the communication gap between the fixed sleeve and the rotating shaft, thus reducing the entry of dust.

[0016] As a preferred embodiment of the above technical solution, the feed cylinder is interconnected with a connecting pipe, and the other end of the connecting pipe is connected to the fixed cylinder. A second piston is provided on the inner wall of the connecting pipe, and a stop block is fixedly connected to the inner wall of the fixed cylinder.

[0017] When some dust and gas break through the sealing ring and enter the sealing cavity, the internal pressure of the sealing cavity gradually increases. As the pressure inside the sealing cavity increases, it squeezes the lubricating grease inside the sealing cavity into the connecting pipe, and then pushes the second piston to move away from the feed cylinder. This increases the pressure inside the fixed cylinder, thereby squeezing the first piston towards the squeezing ring. Under the elastic force of the spring, the squeezing ring further squeezes the sealing ring, further improving the sealing performance of the sealing ring, thus improving the overall sealing effect. By setting a stop, it is ensured that the connecting pipe can be connected to the inner cavity of the fixed cylinder.

[0018] As a preferred embodiment of the above technical solution, a buffer plate is fixedly connected to the inner wall of the unloading box, and the buffer plate is located above the spiral conveyor blades, with material leakage holes on both sides of the buffer plate.

[0019] By setting up a buffer plate, during the feeding process, the ore will first fall directly above the buffer plate, and then slowly roll down to both sides, eventually falling into the interior of the unloading box through the material leakage holes on both sides. This prevents the falling ore from damaging the spiral conveyor blades and increases the service life of the spiral conveyor blades and shaft.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. During the ore unloading process, the elastic sealing component can play a first-stage role in sealing and preventing dust from escaping. When dust passes through the elastic sealing component and enters the sealing cavity, the grease inside the sealing cavity further enhances the dust-preventing efficiency, making the overall dust-preventing effect better. Moreover, the grease reduces the damage of dust to the sealing cover.

[0022] 2. When some dust and gas break through the sealing ring and enter the sealing cavity, the internal pressure of the sealing cavity will gradually increase. When the internal pressure of the sealing cavity increases, it squeezes the lubricating grease inside the sealing cavity into the connecting pipe, and then pushes the second piston to move away from the feed cylinder. This will increase the pressure inside the fixed cylinder, thereby squeezing the first piston to move towards the squeezing ring. Under the elastic force of the spring, the squeezing ring further squeezes the sealing ring, further improving the sealing performance of the sealing ring, thereby improving the overall sealing effect. Attached Figure Description

[0023] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention;

[0024] Figure 2 The diagram shown is a front view of the structure of the present invention.

[0025] Figure 3 The image shown is an enlarged view of point A in the present invention;

[0026] Figure 4 The diagram shown is a schematic representation of the buffer plate in this invention.

[0027] Figure label:

[0028] 10. Unloading box; 11. Feed inlet; 12. Discharge outlet; 20. Unloading mechanism; 21. Motor; 22. Shaft; 23. Spiral conveyor blades; 30. First sealing mechanism; 31. Fixed sleeve; 32. Sealed bearing; 33. Moving collar; 34. Extrusion collar; 35. Sealing ring; 36. Stationary collar; 37. Fixed cylinder; 38. First piston; 39. Spring; 40. Second sealing mechanism; 41. Feed cylinder; 42. Sealing cover; 43. Sealing cavity; 44. Connecting pipe; 45. Second piston; 50. Buffer plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0030] like Figure 1 , Figure 2 As shown, Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention. Figure 2 The diagram shown is a front view of the structure of the present invention.

[0031] It includes an unloading box 10 and an unloading mechanism 20. The top of the unloading box 10 is connected to a feed inlet 11, and the bottom of the unloading box 10 is connected to a discharge outlet 12. The unloading mechanism 20 includes a rotating shaft 22 that passes through the unloading box 10. Spiral conveying blades 23 are installed around the rotating shaft 22, and a motor 21 is installed at one end of the rotating shaft 22.

[0032] The ore enters the unloading box 10 through the feed inlet 11 and is temporarily stored. When unloading is required, the motor 21 drives the rotating shaft 22 and the spiral conveyor blades 23 to rotate. The rotating spiral conveyor blades 23 transport the ore inside the unloading box 10 to the discharge port 12 for unloading. The unloading speed can be controlled by controlling the rotation speed of the spiral conveyor blades 23 through the motor 21.

[0033] Figure 2 , Figure 3 As shown, Figure 2 The diagram shown is a front view of the structure of the present invention. Figure 3 The image shown is an enlarged view of point A in the present invention.

[0034] It includes: a first sealing mechanism 30, which includes a fixed sleeve 31 fixedly connected to the side wall of the unloading box 10 and sleeved around the rotating shaft 22. The fixed sleeve 31 is provided with a sealing bearing 32 and an elastic sealing assembly, and the inner ring of the sealing bearing 32 is fixedly sleeved around the rotating shaft 22; a second sealing mechanism 40, in which a sealing cavity 43 is formed between the fixed sleeve 31 and the rotating shaft 22, located between the sealing cover 42 and the elastic sealing assembly. A feed cylinder 41 is interconnected with the fixed sleeve 31 and is connected to the sealing cavity 43. A sealing cover 42 is provided at the end of the feed cylinder 41 away from the fixed sleeve 31. Lubricating grease is filled into the sealing cavity 43 through the feed cylinder 41, and the lubricating grease and the elastic sealing assembly form a double seal.

[0035] During the ore unloading process, the elastic sealing component can play a first-stage role in sealing and preventing dust from escaping. When dust passes through the elastic sealing component and enters the sealing cavity 43, the grease inside the sealing cavity 43 further enhances the dust-preventing efficiency, making the overall dust-preventing effect better. Moreover, the grease reduces the damage of dust to the sealing cover 42.

[0036] The elastic sealing assembly includes a movable collar 33 fixedly sleeved around the outer periphery of the rotating shaft 22 and a stationary collar 36 fixedly connected to the inner wall of the fixed sleeve 31. A compression collar 34 is slidably connected to the outer edge of the stationary collar 36. A sealing ring 35 is provided between the compression collar 34 and the movable collar 33. A fixed cylinder 37 is fixedly connected to the outer side wall of the stationary collar 36. A first piston 38 is provided inside the fixed cylinder 37. A spring 39 is fixedly connected between the first piston 38 and the compression collar 34. It should be noted that the outer circumference of the sealing ring 35 fits against the inner wall of the fixed sleeve 31. Under the elastic force of the spring 39, the compression collar 34 is pushed to slide on the outer edge of the stationary collar 36, thereby compressing the sealing ring 35 to achieve a sealing effect.

[0037] Both the inner edge of the moving collar 33 and the outer edge of the compression collar 34 are provided with protrusions; by providing protrusions, the sealing ring 35 can be limited, ensuring that during the compression sealing process, the sealing ring 35 can always be at the junction of the compression collar 34 and the moving collar 33, thus ensuring the stability of its seal.

[0038] The outer side wall of the moving sleeve 33 is flush with the inner side wall of the unloading box 10. This flush design not only reduces the damage to the outer side wall of the moving sleeve 33 during the unloading and feeding of ore, but also reduces the communication gap between the fixed sleeve 31 and the rotating shaft 22, thus reducing the entry of dust.

[0039] A connecting pipe 44 is interconnected with the feed cylinder 41, and the other end of the connecting pipe 44 is connected to the fixed cylinder 37. A second piston 45 is provided on the inner wall of the connecting pipe 44, and a stop block is fixedly connected to the inner wall of the fixed cylinder 37. When some dust and gas break through the sealing ring 35 and enter the sealing cavity 43, the internal pressure of the sealing cavity 43 will gradually increase. When the internal pressure of the sealing cavity 43 increases, the grease inside the sealing cavity 43 is squeezed into the connecting pipe 44, and then the second piston 45 is pushed to move away from the feed cylinder 41. This will increase the pressure in the cavity of the fixed cylinder 37, thereby squeezing the first piston 38 to move towards the squeezing ring 34. Under the elastic force transmission of the spring 39, the squeezing ring 34 further squeezes the sealing ring 35, further improving the sealing performance of the sealing ring 35, thereby improving the overall sealing effect. By setting the stop block, it is ensured that the connecting pipe 44 can be connected to the cavity of the fixed cylinder 37.

[0040] like Figure 4 As shown, Figure 4 The diagram shown is a structural schematic of the buffer plate 50 in this invention.

[0041] A buffer plate 50 is fixedly connected to the inner wall of the unloading box 10, and the buffer plate 50 is located above the spiral conveyor blade 23. The buffer plate 50 has material leakage holes on both sides.

[0042] By setting up a buffer plate 50, during the feeding process, the ore will first fall directly above the buffer plate 50, and then slowly roll down to both sides, eventually falling into the unloading box 10 through the material leakage holes on both sides. This prevents the falling ore from damaging the spiral conveyor blades 23 and increases the service life of the spiral conveyor blades 23 and the shaft 22.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An electric ore unloading device for preventing ash runoff, comprising an ore unloading box (10) and an ore unloading mechanism (20), the ore unloading mechanism (20) comprising a rotating shaft (22) penetrating the ore unloading box (10), spiral conveying blades (23) mounted around the rotating shaft (22), and a motor (21) mounted at one end of the rotating shaft (22), characterized in that, The ore unloading device also includes: A sealing mechanism (30) includes a fixed sleeve (31) fixedly connected to the side wall of the unloading box (10) and sleeved around the rotating shaft (22). The fixed sleeve (31) is provided with a sealing bearing (32) and an elastic sealing assembly, and the inner ring of the sealing bearing (32) is fixedly sleeved around the rotating shaft (22). The double sealing mechanism (40) forms a sealing cavity (43) between the fixed sleeve (31) and the rotating shaft (22) between the sealing cover (42) and the elastic sealing assembly. The fixed sleeve (31) is connected to the feed cylinder (41), and the feed cylinder (41) is connected to the sealing cavity (43). The end of the feed cylinder (41) away from the fixed sleeve (31) is provided with the sealing cover (42). The feed cylinder (41) fills the sealing cavity (43) with grease, and the grease and the elastic sealing assembly form a double seal. The elastic sealing assembly includes a movable collar (33) fixedly sleeved around the rotating shaft (22) and a stationary collar (36) fixedly connected to the inner wall of the fixed sleeve (31). A compression collar (34) is slidably connected to the outer edge of the stationary collar (36). A sealing ring (35) is provided between the compression collar (34) and the movable collar (33). A fixed cylinder (37) is fixedly connected to the outer side wall of the stationary collar (36). A first piston (38) is provided inside the fixed cylinder (37). A spring (39) is fixedly connected between the first piston (38) and the compression collar (34). The inner edge of the moving collar (33) and the outer edge of the extrusion collar (34) are both provided with protrusions; The outer wall of the moving sleeve (33) is flush with the inner wall of the unloading box (10); The feed cylinder (41) is interconnected with a connecting pipe (44), and the other end of the connecting pipe (44) is connected to the fixed cylinder (37). A second piston (45) is provided on the inner wall of the connecting pipe (44), and a stop block is fixedly connected to the inner wall of the fixed cylinder (37).

2. The electric ore unloading device for preventing ash runoff according to claim 1, characterized in that, The top of the unloading box (10) is connected to the feed inlet (11), and the bottom of the unloading box (10) is connected to the discharge outlet (12).

3. The electric ore unloading device for preventing ash runoff according to claim 1, characterized in that, The inner wall of the unloading box (10) is fixedly connected to a buffer plate (50), and the buffer plate (50) is located above the spiral conveyor blade (23). The buffer plate (50) has leakage holes on both sides.

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