Dust raising prevention device for screening machine

Abstract

The utility model relates to the technical field of road engineering, in particular to a dust raising prevention device for a screening machine, which comprises a conveying belt, a bracket, a water spraying assembly and a height adjusting assembly, the water spraying assembly is mounted on the bracket, and the conveying belt is obliquely arranged from high to low from one side close to a feeding hole of the screening machine to one side far away from the feeding hole of the screening machine; the support is detachably and fixedly connected to the higher end of the conveying belt, the water spraying assembly comprises a water supply part and multiple sets of water mist nozzles, the multiple sets of water mist nozzles are installed on the support and evenly distributed in the length direction of the support, the water supply part is used for supplying water to the water mist nozzles, and the height adjusting assembly is used for adjusting the height of the support; according to the dust raising prevention device for the screening machine, through pretreatment of the water spraying assembly and the height adjusting assembly, the surfaces of materials are effectively wetted, dust generated by collision and friction in the screening process of the materials is reduced, and therefore the dust concentration in the air is remarkably reduced, and the dust prevention effect of the screening machine is effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of road engineering, and particularly relates to a dust prevention device for a screening machine. Background Art

[0002] During the construction of highways, the screening and sorting of stones are particularly important. During the mixing process of cement stabilized macadam mixture, asphalt concrete, and concrete mixture, stones, cement, and sand of different sizes need to be stirred in accordance with the design ratio to form a mixture that meets the specification requirements. When the screening machine is working, materials such as stones and sand are transported to the transport truck through the conveyor belt. However, a large amount of dust is generated during the falling process of stones, sand, and other materials, polluting the air environment of the construction site and seriously affecting the construction environment and subsequent cleaning work.

[0003] The prior art discloses a dust prevention sand and stone screening machine, including a frame, a screen frame, a screen, and a vibration assembly. The vibration assembly is used to drive the screen to vibrate and is fixed to the frame. The screen frame includes two side plates connected to the frame. A screening cavity is formed between the two side plates. At least one screen is provided and fixed between the two side plates. The two side plates are detachably connected with a cover plate for covering the upper opening of the screening cavity. The cover plate is provided with a dust suction curtain for covering the gap at the connection between the cover plate and the screen frame. The cover plate is provided with a feeding port; one end of the two side plates is provided with a maintenance curtain. One end of the two side plates away from the maintenance curtain is connected with a discharge box. One end of the two side plates away from the cover plate is connected with a discharge hopper, and the discharge hopper is communicated with the screening cavity.

[0004] In view of the above related technologies, since the screen frame of the dust prevention sand and stone screening machine only closes the upper opening of the screening cavity through two side plates and a cover plate, and the screen is fixed between the two side plates, the dust generated during the screening process is likely to escape from the gap at the connection between the cover plate and the screen frame, affecting the dust prevention effect of the screening machine. Utility Model Content

[0005] In order to improve the dust prevention effect of the screening machine, this application provides a dust prevention device for a screening machine.

[0006] The dust prevention device for a screening machine provided by this application adopts the following technical solutions:

[0007] A dust prevention device for a screening machine includes a conveyor belt, a bracket, a water spraying assembly, and a height adjustment assembly. The water spraying assembly is installed on the bracket;

[0008] The conveyor belt is inclined from high to low from the feeding end to the discharging end;

[0009] The bracket is fixedly connected to the higher end of the conveyor belt;

[0010] The water spraying assembly includes a water supply member and multiple groups of water mist nozzles;

[0011] Multiple groups of the water mist nozzles are all installed on the bracket, and the multiple groups of water mist nozzles are evenly distributed along the length direction of the bracket. The water mist nozzles are arranged towards the feeding port of the conveyor belt;

[0012] The water supply member is used to supply water to the water mist nozzles;

[0013] The height adjustment assembly is used to adjust the height of the bracket.

[0014] By adopting the above technical solutions, first, adjust the water supply member to continuously and stably supply water to multiple groups of water mist nozzles, and spray the water onto the sand or other materials at the inlet of the conveyor belt through the water mist nozzles. Then, use the height adjustment assembly to adjust the height of the bracket to ensure that the water mist nozzles can accurately aim at and evenly cover the surface of the materials, eliminating dust at the source of the materials; the anti-dust device for the screening machine is convenient for pre-treatment through the water spraying assembly and the height adjustment assembly, effectively wetting the surface of the materials, reducing the dust generated by the collision and friction of the materials during the screening process, thereby significantly reducing the dust concentration in the air and effectively improving the dust prevention effect of the screening machine.

[0015] Preferably, the water supply member includes a water bucket, a spray pipe and a hydraulic pump;

[0016] The water bucket is arranged on one side close to the conveyor belt, and the hydraulic pump is installed in the water bucket;

[0017] One end of the spray pipe is fixedly connected to the water mist nozzle, and the other end is connected to the hydraulic pump.

[0018] By adopting the above technical solutions, the arranged water bucket can ensure continuous and stable water supply to the spray pipe. Compared with directly connecting to the water source, the water bucket has better water supply buffering ability, which is beneficial to avoiding the influence of water source pressure fluctuations on the water spraying effect; the setting of installing the hydraulic pump in the water bucket is convenient for adjusting the water supply pressure and flow rate according to requirements, ensuring that the water mist nozzles work in the best state and providing uniform and effective water mist coverage.

[0019] Preferably, the water supply member further includes a flow regulating valve, and the flow regulating valve is installed on the spray pipe.

[0020] By adopting the above technical solutions, the arranged flow regulating valve can precisely control the water flow rate in the spray pipe, ensure that the water mist amount sprayed by the water mist nozzles reaches the best state, and adjust to a suitable flow rate according to different screening materials and screening conditions to meet specific dust prevention requirements, ensure uniform water mist coverage on the surface of the materials, effectively reduce the dust generated by the collision and friction of the materials, and is beneficial to further improving the dust prevention effect and reducing the dust concentration in the air.

[0021] Preferably, the bracket includes a horizontally disposed portion and two vertically disposed portions integrally formed;

[0022] The two vertically disposed portions are arranged in parallel on both sides of the conveyor belt, and the horizontally disposed portion is fixedly connected to the tops of the two vertically disposed portions;

[0023] The horizontally disposed portion is hollow, and one end of the spray pipe near the bracket is located in the inner cavity of the horizontally disposed portion and is communicated with the water mist nozzle.

[0024] By adopting the above technical solution, the provided bracket facilitates the effective support of the water spraying assembly through the two vertically disposed portions, preventing the water spraying assembly from shaking or tilting during the operation of the screening machine, improving the overall stability of the water spraying assembly, and thus ensuring the dust prevention effect; the horizontally disposed portion is fixedly connected to the tops of the two vertically disposed portions, enabling the water mist nozzle to be located above the conveyor belt, so as to ensure that the water mist can be directly sprayed onto the material, which is conducive to the water mist covering the surface of the material more evenly, and further improving the dust prevention effect.

[0025] Preferably, the vertically disposed portion includes a fixed section and a sliding section. One end of the sliding section is fixedly connected to the horizontally disposed portion, and the other end is slidably connected to the inner cavity of the fixed section. The end of the fixed section away from the sliding section is fixedly connected to the conveyor belt.

[0026] By adopting the above technical solution, the sliding connection between the sliding section and the fixed section enables the length of the vertically disposed portion of the bracket to be adjusted, facilitating the quick adjustment of the overall height of the bracket by adjusting the height of the vertically disposed portion, and thus ensuring that the water spraying assembly is always in the best position to effectively cover the surface of the material and spray water evenly, enabling the water mist to wet the material more effectively, reducing the generation and dispersion of dust, and thus enhancing the dust prevention effect and adapting to conveyor belts of different sizes and types.

[0027] Preferably, the height adjustment assembly includes a sensor and a micro cylinder;

[0028] The sensor is disposed on one side near the feeding end of the conveyor belt;

[0029] The vertically disposed portion is hollow, the micro cylinder is installed in the inner cavity of the vertically disposed portion, and the micro cylinder is distributed along the length direction of the vertically disposed portion;

[0030] The piston rod of the micro cylinder is fixedly connected to the sliding section, and the other end of the micro cylinder is fixedly connected to the fixed section.

[0031] By adopting the above technical solution, the provided height adjustment assembly facilitates the real-time detection of the height or volume of the material through the sensor. According to the data feedback of the sensor, the micro cylinder can accurately adjust the position of the sliding section and complete the adjustment of the height of the bracket in a short time to adapt to the changes in the height or volume of different materials.

[0032] Preferably, the two water mist nozzles in each group are arranged crosswise, one above the other.

[0033] By adopting the above technical solution, the water mist nozzles arranged crosswise, one above the other, can form a denser water mist layer, complement each other, effectively reduce the dead angle of water spraying, ensure that the water mist can cover the protected area more evenly, and thus improve the dust prevention effect and efficiency. At the same time, the crosswise arranged water mist nozzles can be adjusted and positioned according to the actual situation during installation, which is convenient and flexible. During maintenance, the nozzles can also be inspected and replaced individually, which is beneficial to reducing the maintenance difficulty and cost.

[0034] Preferably, a plurality of buckles are arranged on the spray pipe, and one end of the spray pipe far away from the water mist nozzle is connected to the side wall of the conveyor belt through the plurality of buckles.

[0035] By adopting the above technical solution, connecting the spray pipe to the side wall of the conveyor belt through the buckles makes the installation process simpler. When disassembly or maintenance is required, only the buckles need to be loosened, which is beneficial to improving the disassembly and assembly convenience of the spray pipe; the arranged buckles can maintain the stability and reliability of the pipe even in a working environment with large vibration or impact, reducing the risk of the pipe loosening or falling off.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. The provided anti-dust device for the screening machine is convenient for pre-treatment through the water spraying component and the height adjustment component, effectively wets the surface of the material, reduces the dust generated by the collision and friction of the material during the screening process, thereby significantly reducing the dust concentration in the air and effectively improving the dust prevention effect of the screening machine.

[0038] 2. The provided height adjustment component is convenient for the sensor to detect the height or volume of the material in real time. According to the data feedback of the sensor, the micro cylinder can accurately adjust the position of the sliding section and complete the adjustment of the height of the bracket within a short time to adapt to the changes in the height or volume of different materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is the overall structural schematic diagram of the anti-dust device for the screening machine in the embodiment of the present application.

[0040] Figure 2 is the cross-sectional view of the anti-dust device for the screening machine in the embodiment of the present application.

[0041] Description of reference numerals: 1, conveyor belt; 2, support; 21, horizontal part; 22, vertical part; 221, fixed section; 222, sliding section; 3, water spraying assembly; 31, water supply component; 311, water bucket; 312, spray pipe; 313, hydraulic pump; 314, flow regulating valve; 315, buckle; 32, water mist nozzle; 4, height adjusting assembly; 41, sensor; 42, micro cylinder. Detailed implementation manners

[0042] The following further elaborates on this application Figure 1-2 in conjunction with the attached drawings.

[0043] An embodiment of this application discloses a dust prevention device for a screening machine.

[0044] Referring to Figure 1 and Figure 2 , a dust prevention device for a screening machine includes a conveyor belt 1, a support 2, a water spraying assembly 3, and a height adjusting assembly 4. The support 2 is arranged on the conveyor belt 1, the water spraying assembly 3 is installed on the support 2, and the height adjusting assembly 4 is arranged on one side close to the water spraying assembly 3.

[0045] Referring to Figure 1 , the conveyor belt 1 is inclined from high to low from the feeding end to the discharging end. The screening machine is installed on the conveyor belt 1 and is arranged on one side close to the discharging end of the conveyor belt 1. A support frame for supporting the overall conveyor belt 1 and the screening machine is arranged below the conveyor belt 1; the support 2 is welded to the higher end of the conveyor belt 1. The support 2 includes two vertically arranged parts 22 and a horizontally arranged part 21 which are integrally formed. The two vertically arranged parts 22 are respectively welded to the two opposite side walls of the conveyor belt 1. The two vertically arranged parts 22 are parallel and oppositely distributed. The horizontally arranged part 21 is welded to the ends of the two vertically arranged parts 22 away from the conveyor belt 1. Both the horizontally arranged part 21 and the vertically arranged part 22 are hollow. The vertically arranged part 22 includes a fixed section 221 and a sliding section 222. One end of the sliding section 222 is welded to the horizontally arranged part 21, and the other end is slidably connected to the inner cavity of the fixed section 221. The end of the fixed section 221 away from the sliding section 222 is welded to the side wall of the conveyor belt 1.

[0046] Referring to Figure 1, the water spraying assembly 3 includes a water supply member 31 and multiple groups of water mist nozzles 32; the multiple groups of water mist nozzles 32 are all installed on the horizontal part 21 of the bracket 2, and the multiple groups of water mist nozzles 32 are evenly distributed along the length direction of the bracket 2. To form a denser water mist layer, effectively reduce the dead angle of water spraying, ensure that the water mist can cover the protected area more evenly, and thus improve the dust prevention effect and dust prevention efficiency. In this application, two water mist nozzles 32 in each group are arranged in a crosswise manner, one above the other, and the water mist nozzles 32 are all arranged towards the feed inlet of the conveyor belt 1; the water supply member 31 includes a water bucket 311, a spray pipe 312, a flow regulating valve 314, and a hydraulic pump 313. The water bucket 311 is arranged on the ground on one side of the conveyor belt 1, the hydraulic pump 313 is installed in the water bucket 311, one end of the spray pipe 312 is flange-connected to the water inlet of the water mist nozzle 32, and the other end is flange-connected to the hydraulic pump 313. The flow regulating valve 314 is arranged on the spray pipe 312 on the side close to the hydraulic pump 313. A plurality of buckles 315 are arranged on the pipe of the spray pipe 312 on the side close to the hydraulic pump 313, and the plurality of buckles 315 are evenly distributed along the length direction of the spray pipe. A part of the pipeline of the spray pipe 312 is fixedly connected to the side wall of the conveyor belt 1 on the side close to the hydraulic pump 313 through the buckles 315.

[0047] Referring to Figure 1 and Figure 2 , the height adjustment assembly 4 includes a sensor 41 and a micro cylinder 42. The sensor 41 is installed on the side wall of the conveyor belt 1 close to the bracket 2, the micro cylinder 42 is installed in the inner cavity of the vertical part 22, and the micro cylinder 42 is distributed along the length direction of the vertical part 22. The piston rod of the micro cylinder 42 is welded to the top wall of the sliding section 222, and the other end of the micro cylinder 42 is welded to the fixed section 221.

[0048] The implementation principle of an anti-dust device for a screening machine in an embodiment of this application is as follows: First, adjust the water supply member 31 to continuously and stably supply water to the multiple groups of water mist nozzles 32, and spray water onto the sand or other materials at the inlet of the conveyor belt 1 through the water mist nozzles 32. Then, use the height adjustment assembly 4 to adjust the height of the bracket 2 to ensure that the water mist nozzles 32 can accurately align with and evenly cover the surface of the materials, eliminating dust at the source of the materials.

[0049] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A dust prevention device for a screening machine, characterized in that: It comprises a conveyor belt (1), a bracket (2), a water spray assembly (3) and a height adjustment assembly (4), wherein the water spray assembly (3) is mounted on the bracket (2); The conveyor belt (1) is arranged to be inclined from high to low from the feed end to the discharge end; The support (2) is fixedly connected to the higher end of the conveyor belt (1); The water spray assembly (3) comprises a water supply component (31) and a plurality of groups of water mist spray heads (32); A plurality of groups of water mist nozzles (32) are installed on the bracket (2), and the plurality of groups of water mist nozzles (32) are evenly distributed along the length direction of the bracket (2), and the water mist nozzles (32) are arranged toward the feed port of the conveyor belt (1); The water supply member (31) is used to supply water to the water mist nozzle (32); The height adjustment component (4) is used to adjust the height of the bracket (2).

2. The dust prevention device for a screening machine according to claim 1, characterized in that: The water supply component (31) comprises a water bucket (311), a spray pipe (312) and a hydraulic pump (313); The water bucket (311) is arranged close to one side of the conveyor belt (1), and the hydraulic pump (313) is installed in the water bucket (311); One end of the spray pipe (312) is fixedly connected to the water mist nozzle (32), and the other end is connected to the hydraulic pump (313).

3. The dust prevention device for a screening machine according to claim 2, characterized in that: The water supply component (31) further comprises a flow regulating valve (314), and the flow regulating valve (314) is installed on the spray pipe (312).

4. The dust prevention device for a screening machine according to claim 3, characterized in that: The bracket (2) comprises an integrally arranged horizontal portion (21) and two vertical portions (22); The two vertical parts (22) are arranged in parallel on both sides of the conveyor belt (1), and the horizontal part (21) is fixedly connected to the top ends of the two vertical parts (22); The horizontal portion (21) is hollow, and one end of the spray pipe (312) close to the bracket (2) is located in the inner cavity of the horizontal portion (21) and is connected to the water mist nozzle (32).

5. The dust prevention device for a screening machine according to claim 4, characterized in that: The vertical portion (22) comprises a fixed section (221) and a sliding section (222); one end of the sliding section (222) is fixedly connected to the horizontal portion (21), and the other end is slidingly connected to the inner cavity of the fixed section (221); one end of the fixed section (221) away from the sliding section (222) is fixedly connected to the conveyor belt (1).

6. The dust prevention device for a screening machine according to claim 5, characterized in that: The height adjustment component (4) comprises a sensor (41) and a micro cylinder (42); The sensor (41) is arranged close to the feeding end of the conveyor belt (1); The vertical portion (22) is hollow, the micro cylinders (42) are installed in the inner cavity of the vertical portion (22), and the micro cylinders (42) are distributed along the length direction of the vertical portion (22); The piston rod of the micro cylinder (42) is fixedly connected to the sliding section (222), and the other end of the micro cylinder (42) is fixedly connected to the fixed section (221).

7. The dust prevention device for a screening machine according to claim 1, characterized in that: The two water mist nozzles (32) in each group are arranged crosswise one above the other.

8. The dust prevention device for a screening machine according to claim 2, characterized in that: The spray pipe (312) is provided with a plurality of buckles (315), and one end of the spray pipe (312) away from the water mist nozzle (32) is connected to the side wall of the conveyor belt (1) through the plurality of buckles (315).

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