A dust blocking device applied to the outlet of a belt conveyor guide chute

Abstract

The application discloses a dust blocking device applied to a belt conveyor guide chute outlet, which belongs to the technical field of belt conveyor structure and comprises two parallel supporting rods, the upper end of each supporting rod is movably connected to the inner top of a sealing cover plate of the belt conveyor guide chute outlet, a roller shaft is fixedly arranged between the lower ends of the two supporting rods, a roller is rotatably arranged on the roller shaft, the roller is centrally arranged above a belt track of the belt conveyor guide chute outlet, and dustproof filter cloths are arranged between the two supporting rods, when materials move forward along the belt track, the outer part of the waist-shaped roller can be in approximate seamless dynamic contact with the surface of the materials, the contact part with the materials is not prone to wear, and dust raising can be effectively inhibited in the conveying process.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of belt conveyor structures, in particular to a dust blocking device applied to the outlet of a material guide groove of a belt conveyor. BACKGROUND

[0002] Generally, a material guide groove is arranged at the tail of a belt conveyor to constrain the transported material from falling out, and a dust blocking curtain is arranged at the outlet of the material guide groove along the coal flow direction to prevent the induced wind with dust from directly blowing out of the material guide groove. The dust blocking curtain is generally made of rubber strips, and the rubber strips are in friction contact with the material surface during the load operation of the belt conveyor. The contact position is prone to wear due to frequent friction contact, and a fixed cross-section hollow is formed on the curtain. When the material is high or low, a corresponding gap is formed between the upper part of the material and the lower edge of the curtain, and the induced wind can carry dust to overflow through the gap, which causes a poor working environment due to the large dust.

[0003] Based on this, the application provides a dust blocking device applied to the outlet of a material guide groove of a belt conveyor to solve the above problems. SUMMARY

[0004] The application aims to provide a dust blocking device applied to the outlet of a material guide groove of a belt conveyor to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a dust blocking device applied to the outlet of a material guide groove of a belt conveyor, comprising two parallelly arranged support rods, the upper ends of the support rods are movably connected to the inner top of a sealing cover plate of the outlet of the material guide groove of the belt conveyor, a roller shaft is fixedly arranged between the lower ends of the two support rods, a roller is rotatably arranged on the roller shaft, the roller is centrally arranged above the belt track of the outlet of the material guide groove of the belt conveyor, and dustproof filter cloth is arranged between the two support rods.

[0006] Preferably, two spaced-apart hinge seats are fixedly arranged on the inner top of the sealing cover plate of the outlet of the material guide groove, and the upper ends of the two support rods are movably hinged to the two hinge seats through pin shafts.

[0007] Preferably, the outer diameter of the roller gradually decreases from the two ends to the middle, forming left-right symmetrical arc-shaped grooves.

[0008] Preferably, an axle hole is arranged in the roller, and the two ends of the axle hole are rotatably arranged on the roller shaft through embedded bearings.

[0009] Preferably, a rubber layer is wrapped on the circumferential outer wall of the roller, and anti-skid lines are arranged on the surface of the rubber layer.

[0010] Preferably, the roller is a hollow structure, and a plurality of needle curtains are arranged in a circumferential array on the outer wall of the roller, each of the needle curtains being composed of a plurality of movable needles arranged in an axial array and penetratingly arranged on the side wall of the roller.

[0011] Preferably, the movable needle comprises a rubber needle body, a shuttle-shaped limiting portion is arranged at one end of the rubber needle body embedded in the interior of the roller, and a spherical limiting portion is arranged at the middle of the other end of the rubber needle body located outside the roller.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] The dust curtain adopts a waist-round roller with an outer rubber layer or densely arranged needle curtains as a lower hem structure of the dust curtain, and the upper end of the dust curtain is movably connected to the inner top of a sealing cover plate of a belt conveyor material guide groove outlet. When the material moves forward along the belt track, the outer part of the waist-round roller can be in approximate seamless dynamic contact with the surface of the material, and the contact part with the material is not easy to wear, so that the dust emission can be effectively inhibited during the conveying process. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0015] Figure 1 It is a front structure schematic diagram of the application;

[0016] Figure 2 It is a side structure schematic diagram of the application;

[0017] Figure 3 It is a roller structure schematic diagram of the application Figure 1 ;

[0018] Figure 4 It is a roller structure schematic diagram of the application Figure 2 ;

[0019] Figure 5 It is Figure 4 a partial enlarged structure schematic diagram.

[0020] In the drawings, the components represented by each reference numeral are listed as follows:

[0021] 1- support rod, 2- sealing cover plate, 3- roller shaft, 4- roller, 41- arc-shaped groove, 42- bearing, 43- rubber layer, 44- needle curtain, 45- movable needle, 451- rubber needle body, 452- shuttle-shaped limiting portion, 453- spherical limiting portion, 5- belt track, 6- dustproof filter cloth. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the application will be apparently and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0023] Please refer to Figures 1-5 The application provides a technical solution: a dust blocking device applied to a belt conveyor material guide groove outlet, comprising two parallelly arranged support rods 1, a dustproof filter cloth 6 is arranged between the two support rods 1 to play a main shielding role, the upper end of the support rod 1 is movably connected to the inner top of a sealing cover plate 2 of the belt conveyor material guide groove outlet, two spaced-apart hinge seats 7 are fixedly arranged on the inner top of the sealing cover plate 2 of the belt conveyor material guide groove outlet, the upper end of the two support rods 1 is movably hinged to the two hinge seats 7 through a pin shaft 8, a roller shaft 3 is fixedly arranged between the lower end of the two support rods 1, a roller 4 is rotatably installed on the roller shaft 3, the roller 4 is centrally located above a belt track 5 of the belt conveyor material guide groove outlet, the lower end of the dust blocking curtain is in a suspended state, since the height of the material carried on the belt track 5 is not the same, when the height of the material is increased, the material moving forward pushes the dust blocking curtain forward, so that the dust blocking curtain swings forward around the pin shaft 8, thereby playing a role of avoiding the material to pass through smoothly, and when the height of the material is reduced, the dust blocking curtain reversely swings downward under the action of gravity, thereby keeping in contact with the top of the material at all times, so as to dynamically change the gap space above the material, thereby inhibiting the induced wind from carrying dust to overflow through the gap.

[0024] The outer diameter of the roller 4 gradually decreases from the two ends to the middle, forming left-right symmetrical arc-shaped grooves 41, since the material naturally piled on the belt track 5 generally has a pile shape with high middle and low sides, the roller 4 is designed as a waist-round structure, which can better fit the top of the material.

[0025] An axle hole is formed in the roller 4, the two ends of the axle hole are rotatably installed with the roller shaft 3 through embedded bearings 42, the roller 4 makes the rotating resistance smaller under the action of the bearings 42, the material in motion drives the roller 4 to rotate around the roller shaft 3 by using the friction force in contact, therefore, the smaller the rotating resistance between the roller 4 and the roller shaft 3, the smaller the friction force required for the material to drive the roller 4 to rotate, and therefore, the smaller the abrasion caused by the contact action between the outer wall of the roller 4 and the material, thereby prolonging the service life of the equipment.

[0026] Furthermore, the outer circumference of the roller 4 is covered with a rubber layer 43, and the surface of the rubber layer 43 is provided with anti-slip texture. By setting the rubber layer 43, the soft, anti-slip and elastic characteristics of rubber can be used to make it easier to drive the roller 4 to rotate when the material comes into contact with the outer wall of the roller 4, and the noise is less when in contact. In the later stage of use, the rubber layer 43 can be replaced separately to maintain the equipment.

[0027] In another embodiment, the roller 4 is a hollow structure. Several rows of needle curtains 44 are arranged in a circumferential array on the outer wall of the roller 4. Each row of needle curtains 44 is composed of several movable pins 45 that are axially arrayed and interspersed on the side wall of the roller 4. When the movable pins 45 are located below the roller 4, they can hang down and extend out of the outer wall of the roller 4 by their own weight. When the hanging movable pins 45 come into contact with the material below, they can be pushed and compressed back into the inner cavity of the roller 4. The advantage of this row of needle curtains 44 structure is that, on the one hand, compared with the regular arc-shaped grooves 41 on the outer wall of the roller 4, it can better adapt to the irregular pile shape of the material, and further effectively eliminate the gap between the lower hem of the dust curtain and the top of the material; on the other hand, since each row of needle curtains 44 is arranged in a circumferential array, it has a better anti-slip effect. When the material moves forward, it comes into lateral contact with the needle curtains 44, making it easier to push the roller 4 to rotate.

[0028] Furthermore, the movable ejector pin 45 includes a rubber needle body 451. One end of the rubber needle body 451, which is embedded inside the roller 4, is provided with a shuttle-shaped limiting part 452. The middle of the outer end of the rubber needle body 451, located on the outside of the roller 4, is provided with a spherical limiting part 453. The rubber needle body 451 is made of flexible rubber to avoid excessive hard contact wear. The retractable range of the movable ejector pin 45 is the distance from the shuttle-shaped limiting part 452 to the spherical limiting part 453. The shuttle-shaped limiting part 452 is designed to facilitate easy insertion and removal from the side wall hole of the roller 4 when replacing the rubber needle body 451. The spherical limiting part 453 is larger than the side wall hole of the roller 4 to ensure that the rubber needle body 451 is completely retracted into the roller 4.

[0029] In the description of the invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust-blocking device applied at the outlet of a conveyor belt chute, characterized in that: It includes two parallel support rods (1), the upper end of the support rods (1) is movably connected to the top of the inner side of the sealing cover plate (2) at the outlet of the conveyor belt guide chute, a roller shaft (3) is fixedly inserted between the lower ends of the two support rods (1), a roller (4) is rotatably installed on the roller shaft (3), the roller (4) is centrally located above the belt track (5) at the outlet of the conveyor belt guide chute, and a dustproof filter cloth (6) is covered between the two support rods (1). The roller (4) has a shaft hole inside, and the two ends of the shaft hole are rotatably mounted to the roller shaft (3) through embedded bearings (42); The roller (4) is a hollow structure. Several rows of needle curtains (44) are arranged in a circumferential array on the outer wall of the roller (4). Each row of needle curtains (44) is composed of several movable pins (45) that are axially arrayed and interspersed on the side wall of the roller (4). The movable pin (45) includes a rubber pin body (451), one end of which is embedded in the roller (4) and has a shuttle-shaped limiting part (452), and the middle of the outer side of the rubber pin body (451) is provided with a spherical limiting part (453).

2. A dust-blocking device applied at the outlet of a conveyor belt chute according to claim 1, characterized in that: Two spaced hinge seats (7) are fixedly installed on the top inner side of the sealing cover plate (2) at the outlet of the conveyor belt guide chute. The upper ends of the two support rods (1) are movably hinged to the two hinge seats (7) respectively through pins (8).

3. A dust-blocking device applied at the outlet of a conveyor belt chute according to claim 1, characterized in that: The outer diameter of the roller (4) gradually decreases from both ends of the axial direction to the middle, forming a left-right symmetrical arc-shaped groove (41).

4. A dust-blocking device applied at the outlet of a conveyor belt chute according to claim 1, characterized in that: The outer circumference of the roller (4) is covered with a rubber layer (43), and the surface of the rubber layer (43) is provided with anti-slip texture.

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