Coal cleaning device for bottom belt of coal mine belt conveyor

Abstract

The utility model relates to the technical field of belt conveyor cleaning, in particular to a coal cleaning device for a bottom belt of a coal mine belt conveyor. Comprising a belt conveyor body and a coal cleaning mechanism installed at the bottom of the discharging end of the belt conveyor body, the coal cleaning mechanism comprises an intermittent knocking type coal cleaning assembly and a brush type coal cleaning assembly, and the intermittent knocking type coal cleaning assembly comprises a mounting frame, a plurality of intermittent knocking pieces evenly distributed on the mounting frame and a first transmission piece; the intermittent knocking piece comprises a knocking rod, a driving rod and an eccentric driving piece which are installed on the installation frame in a hinged mode, and the eccentric driving piece comprises two eccentric plates which are symmetrically arranged, an eccentric shaft fixedly installed between the two eccentric plates and a driving shaft fixedly installed on the two eccentric plates; and the eccentric plates on the two adjacent eccentric driving parts are integrally connected through the driving shaft. The belt conveyor can be cleaned, meanwhile, excessive interference to operation of the belt conveyor is avoided, and the abrasion rate of the belt conveyor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyor cleaning, in particular to a coal cleaning device for the bottom belt of a coal mine belt conveyor. Background Art

[0002] As is well known, the belt conveyor in the coal mine industry is a device for transporting goods by continuous friction drive, which is widely used in coal mine transportation. During the conveying operation, a large amount of coal ash often adheres to the belt and needs to be cleaned regularly.

[0003] For example, a Chinese utility model patent discloses a coal cleaning device for a belt conveyor (publication number CN204184886U), which includes: a rectangular frame, the rectangular frame includes two pairs of side plates, and scraping plates are fixedly connected to one pair of side plates, and each scraping plate is jointly clamped and fixed with the side plate through a pressing plate; connecting plates are rotatably connected to the other pair of side plates, and counterweights are arranged at the ends of the connecting plates; a support is arranged on the connecting plate, and the support is used for fixedly connecting with the head of the belt conveyor. This device sweeps the belt of the belt conveyor through a double-link scraping plate, making the scraping more thorough. A counterweight is connected to the scraping plate frame, and the counterweight and the scraping plate maintain balance through the lever principle, so that the scraping plate can always be tightly attached to the belt for cleaning, improving the cleaning effect. In addition, the connecting plates are connected by a connecting rod, so that the scraping plates are evenly stressed and the wear is evenly distributed, improving the wear resistance of the scraping plates and making the cleaning device clean the adhered coal mud more thoroughly.

[0004] However, when the inventor specifically implemented this device, it was found that there were the following defects: the scraping plate hindered the normal operation of the belt conveyor, invisibly increasing the energy consumption of the belt conveyor; and due to the long-term friction of the scraping plate on the belt conveyor, the wear rate of the belt conveyor was increased, and there were certain limitations in use. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a coal cleaning device for the bottom belt of a coal mine belt conveyor, which can realize the cleaning of the belt conveyor while avoiding excessive interference with the operation of the belt conveyor and reducing the wear rate of the belt conveyor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal cleaning device for the bottom belt of a coal mine belt conveyor, comprising a belt conveyor body and a coal cleaning mechanism installed at the bottom of the discharging end of the belt conveyor body, the coal cleaning mechanism comprising an intermittent percussion type coal cleaning component and a brush type coal cleaning component, the intermittent percussion type coal cleaning component comprising a mounting frame, a plurality of intermittent percussion members evenly distributed on the mounting frame and a first transmission member, the intermittent percussion member comprising a percussion rod hingedly mounted on the mounting frame, a driving rod and an eccentric driving member, the eccentric driving member comprising two symmetrically arranged eccentric plates, an eccentric shaft fixedly mounted between the two eccentric plates and A driving shaft fixedly mounted on the two eccentric plates, the driving shaft integrally connects the eccentric plates on the two adjacent eccentric driving members, the driving shaft on the intermittent knocking member near the mounting frame is rotatably connected to the mounting frame; one end of the driving rod is hinged to the knocking rod, and the other end of the driving rod is rotatably connected to the eccentric shaft, the belt conveyor body provides power for the rotation of the driving shaft through the first transmission member; further, the first transmission member is preferably a chain and a sprocket; the first transmission member may also adopt other transmission devices with equivalent transmission effects such as synchronous belts; kinetic energy may also be provided for the rotation of the driving shaft through an external driving motor, etc., and no further exhaustive limitation is made here.

[0007] Preferably, a roller is rotatably mounted on the end of the knocking rod.

[0008] Preferably, the intermittent knocking members are divided into two groups, the two groups of intermittent knocking members are distributed at intervals, and the eccentric shafts on the two groups of intermittent knocking members are respectively located on both sides of the central axis of the driving shaft.

[0009] Preferably, an air distribution duct and a fan are installed on the mounting frame, and the air distribution duct is provided with ventilation holes facing the bottom of the belt conveyor body; further, the fan can be a suction fan and a blower, and the fan is connected to the inside of the air distribution duct.

[0010] Preferably, an electric heater is installed in the air distribution duct; further, the electric heater can be an electric heating tube or other equivalent parts with electric heating effect; the fan is a blower.

[0011] Preferably, the brush-type coal cleaning assembly adopts a roller brush; further, the brush-type coal cleaning assembly may also adopt a bristle brush or the like.

[0012] Preferably, it also includes a second transmission member, through which the roller brush is synchronously connected to the belt conveyor body, and the roller brush is connected to the intermittent percussion type coal cleaning assembly through the first transmission member; further, the roller brush is rotatably installed on the belt conveyor body or the mounting frame, and the roller brush is connected to the drive shaft on a group of intermittent percussion members adjacent to the mounting frame through the first transmission member.

[0013] Compared with the prior art, the utility model provides a coal cleaning device for the bottom belt of a coal mine belt conveyor, which has the following beneficial effects: the coal cleaning device for the bottom belt of the coal mine belt conveyor drives the drive shaft to rotate through the first transmission member, the eccentric plate drives the eccentric shaft to rotate around the central axis of the drive shaft, and after being transmitted by the drive rod, the knocking rod makes a reciprocating swinging motion at the mounting frame, and the end of the knocking rod makes an intermittent knocking action on the bottom belt of the belt conveyor body. Under the knocking action of the knocking rod, the coal ash adhering to the belt of the belt conveyor body is shaken off. Because the knocking rod and the belt conveyor body are in intermittent point contact, the friction between the knocking rod and the belt conveyor body is small, so that while cleaning the belt conveyor, excessive interference with the operation of the belt conveyor is avoided, and the wear rate of the belt conveyor is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. 6 is a schematic structural diagram of the connection relationship between the belt conveyor body and the coal cleaning mechanism of the utility model;

[0015] Figure 2 FIG. 10 is a three-dimensional structural diagram of the intermittent knocking type coal cleaning assembly of the utility model;

[0016] Figure 3 FIG. 14 is a top plan structural diagram of the intermittent knocking type coal cleaning assembly of the utility model;

[0017] Figure 4 FIG. 18 is a sectional structural diagram of the utility model at section B-B; Figure 3 at B-B;

[0018] Figure 5 FIG. 24 is a partial enlarged structural diagram of part A of the utility model; Figure 1 at A;

[0019] Reference numerals in the drawings: 1, belt conveyor body; 2, intermittent knocking type coal cleaning assembly; 3, mounting frame; 4, first transmission member; 5, knocking rod; 6, drive rod; 7, eccentric plate; 8, eccentric shaft; 9, drive shaft; 10, roller; 11, air distribution pipe; 12, fan; 13, ventilation hole; 14, electric heater; 15, roller brush; 16, second transmission member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] To enable those skilled in the art to better understand the solutions of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Specifically, please refer to Figure 1-5 , the coal cleaning device for the bottom belt of a coal mine belt conveyor specifically includes: a belt conveyor body 1 and a coal cleaning mechanism installed at the bottom of the discharge end of the belt conveyor body 1. The coal cleaning mechanism includes an intermittent knocking type coal cleaning component 2 and a brush type coal cleaning component. The intermittent knocking type coal cleaning component 2 includes a mounting frame 3, a plurality of intermittent knocking members evenly distributed on the mounting frame 3, and a first transmission member 4. The intermittent knocking member includes a knocking rod 5 hinged to the mounting frame 3, a driving rod 6, and an eccentric driving member. The eccentric driving member includes two symmetrically arranged eccentric plates 7, an eccentric shaft 8 fixedly installed between the two eccentric plates 7, and a driving shaft 9 fixedly installed on the two eccentric plates 7. The driving shaft 9 integrally connects the eccentric plates 7 on two adjacent eccentric driving members, and the driving shaft 9 on the intermittent knocking member near the mounting frame 3 is rotatably connected to the mounting frame 3; one end of the driving rod 6 is hinged to the knocking rod 5, and the other end of the driving rod 6 is rotatably connected to the eccentric shaft 8. The belt conveyor body 1 provides power for the rotation of the driving shaft 9 through the first transmission member 4; further, the first transmission member 4 is preferably a chain and a sprocket; the first transmission member 4 can also adopt other transmitters with equivalent transmission effects such as a synchronous belt; the kinetic energy for the rotation of the driving shaft 9 can also be provided by an external driving motor, etc., and no further exhaustive limitation is made here.

[0023] For the coal cleaning device for the bottom belt of a coal mine belt conveyor provided by the present utility model, the driving shaft 9 is driven to rotate through the first transmission member 4, the eccentric plate 7 drives the eccentric shaft 8 to rotate around the central axis of the driving shaft 9. After being transmitted through the driving rod 6, the knocking rod 5 makes a reciprocating swinging motion at the mounting frame 3, and the end of the knocking rod 5 makes an intermittent knocking action on the bottom belt of the belt conveyor body 1. Under the knocking action of the knocking rod 5, the coal ash attached to the belt of the belt conveyor body 1 is shaken off. Since the knocking rod 5 and the belt conveyor body 1 are in intermittent point contact, the friction between the knocking rod 5 and the belt conveyor body 1 is small, which realizes the cleaning of the belt conveyor while avoiding excessive interference with the operation of the belt conveyor and reducing the wear rate of the belt conveyor; and through the knocking of the knocking rod 5, the stubborn coal blocks attached to the belt of the belt conveyor body 1 can be broken and separated, reducing the accident rate of jamming between the belt and the coal cleaning mechanism.

[0024] The end of the knocking rod 5 is rotatably mounted with a roller 10. The intermittent knocking pieces are divided into two groups, which are spaced apart. The eccentric shafts 8 on the two groups of intermittent knocking pieces are located on both sides of the central axis of the drive shaft 9. The roller 10 can realize the rotational contact between the knocking rod 5 and the belt on the belt conveyor body 1, further reducing the friction between the knocking rod 5 and the belt, and reducing the running resistance and self-energy consumption of the belt conveyor body 1; and the intermittent knocking pieces are arranged in two groups with spaced apart distribution, which can increase the contact frequency between the roller 10 on the knocking rod 5 and the belt, thereby improving the cleaning effect of the coal ash attached to the belt on the belt conveyor body 1.

[0025] like Figure 2-4 As shown, an air distribution duct 11 and a fan 12 are installed on the mounting frame 3. The air distribution duct 11 is provided with a ventilation hole 13 facing the bottom of the belt conveyor body 1. Furthermore, the fan 12 can be a suction fan or a blower, and the fan 12 is connected to the inside of the air distribution duct 11.

[0026] An electric heater 14 is installed in the air distribution duct 11; further, the electric heater 14 can be an electric heating tube or other equivalent parts with electric heating effect; in this embodiment, the fan 12 is preferably a blower.

[0027] The coal cleaning device for the bottom belt of a coal mine belt conveyor provided in this embodiment blows air into or absorbs air from the air distribution pipe 11 through the fan 12 to accelerate the air flow rate around the air distribution pipe 11, thereby accelerating the evaporation of water stains and the like attached to the belt on the belt conveyor body 1, ensuring the dryness of the belt, and reducing the amount of coal ash attached to the belt; when an electric heater 14 is installed in the air distribution pipe 11, the fan 12 uses a blower to heat the air flow entering the air distribution pipe 11 through the electric heater 14 and then blow it to the belt, so as to further improve the evaporation effect of water stains on the belt, improve the dryness of the belt surface, and further reduce the attachment of coal ash to the belt; at the same time, small particles of coal ash attached to the belt surface can also be blown away, further improving the coal cleaning effect.

[0028] The brush-type coal cleaning component in this embodiment adopts a roller brush 15; further, the brush-type coal cleaning component may also adopt a hair brush or the like.

[0029] See also Figure 5 The coal cleaning device for the bottom belt of the coal mine belt conveyor also includes a second transmission member 16, through which the roller brush 15 is synchronously connected to the belt conveyor body 1, and the roller brush 15 is connected to the intermittent percussion coal cleaning assembly 2 through the first transmission member 4; further, the roller brush 15 is rotatably installed on the belt conveyor body 1 or the mounting frame 3, and the roller brush 15 is connected to the drive shaft 9 on a group of intermittent percussion members adjacent to the mounting frame 3 through the first transmission member 4.

[0030] The coal cleaning device for the bottom belt of the coal mine belt conveyor provided in this embodiment, during the operation of the belt conveyor body 1, drives the roller brush 15 to rotate through the second transmission member 16, and the roller brush 15 brushes the coal ash on the belt conveyor body 1; after being driven by the first transmission member 4, the intermittent knocking member rotates synchronously with the roller brush 15. When the belt conveyor body 1 stops running, the roller brush 15 and the intermittent knocking member stop synchronously, without the need for control by an external system such as a PLC.

[0031] The usage process of the coal cleaning device for the bottom belt of the coal mine belt conveyor provided by the present utility model is as follows: When the belt conveyor body 1 is running, after being driven by the second transmission member 16, the roller brush 15 rotates and brushes the coal ash on the belt of the belt conveyor body 1. At the same time, after being driven by the first transmission member 4, the drive shaft 9 rotates, the eccentric plate 7 drives the eccentric shaft 8 to rotate around the central axis of the drive shaft 9. After being driven by the drive rod 6, the knocking rod 5 makes a reciprocating swinging motion at the mounting frame 3, and the roller 10 at the end of the knocking rod 5 makes an intermittent knocking action on the bottom belt of the belt conveyor body 1. Under the knocking action of the knocking rod 5, the coal ash attached to the belt of the belt conveyor body 1 is shaken off. By starting the blower 12, the blower 12 blows air into the air distribution pipe 11, heats it, and then blows it through the ventilation holes 13 to the bottom belt of the belt conveyor body 1, drying the belt and blowing away the fine coal ash at the same time, completing the cleaning operation of the coal ash attached to the belt.

[0032] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all embodiments. The accompanying drawings show the preferred embodiments of the present utility model, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present utility model in other related technical fields is equally within the scope of the patent protection of the present utility model.

Claims

1. A coal cleaning device for the bottom belt of a coal mine belt conveyor, characterized in that, It comprises a belt conveyor body (1) and a coal cleaning mechanism installed at the bottom of the discharging end of the belt conveyor body (1), wherein the coal cleaning mechanism comprises an intermittent knocking type coal cleaning component (2) and a brush type coal cleaning component; The intermittent percussion type coal cleaning assembly (2) comprises a mounting frame (3), a plurality of intermittent percussion members evenly distributed on the mounting frame (3), and a first transmission member (4); the intermittent percussion member comprises a percussion rod (5) hingedly mounted on the mounting frame (3), a driving rod (6), and an eccentric driving member; the eccentric driving member comprises two symmetrically arranged eccentric plates (7), an eccentric shaft (8) fixedly mounted between the two eccentric plates (7), and a driving shaft (9) fixedly mounted on the two eccentric plates (7); the driving shaft (9) integrally connects the eccentric plates (7) on two adjacent eccentric driving members; the driving shaft (9) on the intermittent percussion member adjacent to the mounting frame (3) is rotatably connected to the mounting frame (3); one end of the driving rod (6) is hingedly connected to the percussion rod (5), and the other end of the driving rod (6) is rotatably connected to the eccentric shaft (8); the belt conveyor body (1) provides power for the rotation of the driving shaft (9) through the first transmission member (4).

2. The coal cleaning device for the bottom belt of a coal mine belt conveyor according to claim 1, characterized in that, A roller (10) is rotatably mounted on the end of the knocking rod (5).

3. The coal cleaning device for the bottom belt of a coal mine belt conveyor according to claim 1 or 2, characterized in that, The intermittent striking members are divided into two groups, the two groups of intermittent striking members are spaced apart, and the eccentric shafts (8) on the two groups of intermittent striking members are respectively located on both sides of the central axis of the driving shaft (9).

4. The coal cleaning device for the bottom belt of a coal mine belt conveyor according to claim 1, characterized in that, An air distribution pipe (11) and a fan (12) are mounted on the mounting frame (3); the air distribution pipe (11) is provided with a ventilation hole (13) facing the bottom of the belt conveyor body (1).

5. The coal cleaning device for the bottom belt of a coal mine belt conveyor according to claim 4, characterized in that, An electric heater (14) is installed in the air distribution pipe (11).

6. The coal cleaning device for the bottom belt of a coal mine belt conveyor according to claim 1, wherein, The brush-type coal cleaning component adopts a roller brush (15).

7. The coal cleaning device for the bottom belt of a coal mine belt conveyor according to claim 6, wherein It also comprises a second transmission member (16), the roller brush (15) being synchronously transmission-connected to the belt conveyor body (1) via the second transmission member (16), and the roller brush (15) being transmission-connected to the intermittent percussion-type coal cleaning assembly (2) via the first transmission member (4).

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