Fluctuating multi-element screen

Abstract

The invention belongs to the technical field of coal briquette screening equipment, and particularly relates to a fluctuating multi-element screen which comprises a fluctuating multi-element screen body, guardrails are hinged to the two sides of the top end of the fluctuating multi-element screen body through hinges, and a feeding hopper is fixedly connected to a feeding opening of the fluctuating multi-element screen body through bolts. And the inner wall of the feeding hopper is fixedly connected with a coal briquette material pretreatment mechanism. The fluctuating multi-element screen has the functions of detecting the humidity of coal briquette materials, drying and reducing the surface adhesion force, and also has the capability of collecting fine coal powder in the coal briquette materials, so that the fine coal powder can be collected and reused, the environmental protection performance of the fluctuating multi-element screen can be improved, the body health of workers is guaranteed, and the working efficiency is improved. And in addition, the situation that screen holes in the fluctuating multi-element screen are interfered by fine pulverized coal with large adhesion force can be avoided, the grading screening effect of coal briquette materials in the fluctuating multi-element screen is improved, and the use reliability of the fluctuating multi-element screen is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal block screening equipment, in particular to a fluctuation multi-element screen. BACKGROUND

[0002] The fluctuation multi-element screen generally refers to the BS series fluctuation screen, which is an important equipment of the coal conveying system of a thermal power plant and is also widely used in metallurgy, building materials, chemical industry, coal and other systems. It utilizes mechanical methods to form a screen surface with multiple variable screen holes through special screen pieces on multiple parallel rotors. The rotors rotate at the same speed in the same direction, and the coal is moved forward in a fluctuating manner by the staggered rotation of the peach-shaped screen pieces, realizing high-efficiency screening. The purpose of screening coal blocks is to classify and screen raw coal according to particle size. Small particles of coal that meet the particle size requirements are discharged below the screen surface, and large particles of coal are sent to a coal crusher for crushing to meet the requirements of power plants for coal particle size. At the same time, it has the advantages of preventing blockage, high screening efficiency, and wide adaptability. For example, the patent with the patent authorization announcement number CN105127084B discloses a fluctuation roller screen.

[0003] At present, when the fluctuation multi-element screen screens coal block materials, the following problems exist: Firstly, when the coal block material is screened, if the moisture content of the coal block material itself is relatively high, the adhesion force on the surface of the coal block material is relatively large, and the coal powder is easily adhered and accumulated in the fluctuation multi-element screen, reducing the aperture of the screen hole of the fluctuation multi-element screen and decreasing the screening accuracy, and increasing the probability of blockage of the fluctuation multi-element screen, which not only affects the screening effect of the fluctuation multi-element screen, but also affects the reliability of the use of the fluctuation multi-element screen. Secondly, if the moisture content of the coal block material itself is relatively low, the adhesion force on the surface of the coal powder part in the coal block material is relatively low, so that the coal powder is easily scattered when the fluctuation multi-element screen is screened, which not only pollutes the surrounding environment, but also endangers the health of the surrounding workers, and affects the environmental protection performance of the fluctuation multi-element screen.

[0004] Therefore, we propose a fluctuation multi-element screen to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a fluctuation multi-element screen to solve the above problems.

[0006] To achieve the above purpose, the following technical scheme is adopted: a fluctuation multi-element screen, comprising a fluctuation multi-element screen main body, both sides of the top end of the fluctuation multi-element screen main body are hinged with guardrails through hinges, the feed inlet of the fluctuation multi-element screen main body is fixedly connected with a feed hopper through bolts, and the inner wall of the feed hopper is fixedly connected with a coal block material pretreatment mechanism; The outer wall of the fluctuation multi-element screen main body is fixedly connected with a transparent collection box, the bottom end of the transparent collection box is fixedly communicated with a discharge electromagnetic valve, and the upper surface of the transparent collection box is fixedly communicated with a material guiding mechanism. The upper surface of the transparent collecting box is provided with a rectangular through hole, and the hole wall of the rectangular through hole is fixedly connected with an auxiliary mechanism. One of the top outer walls of the guardrail is fixedly connected with a dustproof mechanism.

[0007] In the above-mentioned wave multi-element screen, the coal block material pretreatment mechanism includes two U-shaped gas hoods, the two U-shaped gas hoods are fixedly connected with the inner wall of the feed hopper in a symmetrical manner, a plurality of air holes are formed in the outer wall of the opposite side of each of the two U-shaped gas hoods, and a plurality of inclined dispersion mesh plates are fixedly connected to the outer wall of the opposite side of each of the two U-shaped gas hoods.

[0008] In the above-mentioned wave multi-element screen, the material guiding mechanism includes a feed pipe fixedly communicated with the upper surface of the transparent collecting box and an air suction pump body, the top end of the feed pipe is fixedly communicated with a cylinder, the side end of the cylinder is fixedly communicated with the outer wall of the feed hopper, the feed inlet of the cylinder is in communication with the interior of one of the U-shaped gas hoods, a sealing bearing is fixedly connected to the inner wall of the side end of the cylinder, a rotating rod is fixedly connected to the inner wall of the sealing bearing, a helical blade in sealing and sliding connection with the inner wall of the cylinder is fixedly sleeved on the rod wall of the rotating rod, a through hole is formed in the outer wall of the feed pipe, and a humidity sensor is fixedly connected to the hole wall of the through hole, and a driving mechanism is fixedly connected to the driving end of the air suction pump body.

[0009] In the above-mentioned wave multi-element screen, the driving mechanism includes a connecting rod fixedly connected to the driving end of the air suction pump body, an L-shaped frame is fixedly connected to the outer wall of the cylinder and the upper surface of the transparent collecting box, a driving motor is fixedly connected to the top end of the L-shaped frame, the driving end of the driving motor is fixedly connected to the top end of the connecting rod through the L-shaped frame, a first bevel gear is fixedly sleeved on the rod wall of the connecting rod, a second bevel gear in perpendicular engagement with the first bevel gear is fixedly connected to the side end of the rotating rod, and a PLC controller is fixedly connected to the outer wall of the L-shaped frame.

[0010] In the above-mentioned wave multi-element screen, a conical ceramic filter cover is arranged below the air inlet end of the air suction pump body, the top end of the conical ceramic filter cover is fixedly connected to the inner wall of the transparent collecting box, and a microporous protective sleeve is fixedly sleeved on the outer wall of the conical ceramic filter cover.

[0011] In the above-mentioned fluctuation multi-element sieve, the auxiliary mechanism comprises a heat-conducting box embedded and fixed with the top of the transparent collecting box, a rectangular through hole is formed in the top end of the heat-conducting box, and the hole wall of the rectangular through hole is fixedly connected with a heat-conducting plate, the bottom end of the heat-conducting plate is fixedly connected with a heat-conducting net rack, the upper surface of the heat-conducting plate is fixedly connected with a plurality of semiconductor refrigeration pieces, the refrigeration sides of the plurality of semiconductor refrigeration pieces are commonly fixedly connected with a heat-conducting sheet, the top end of the heat-conducting box is fixedly connected with a heat insulation cover, the heat-conducting sheet is located on the inner side of the heat insulation cover, the air outlet end of the suction pump body is fixedly communicated with a first air pipe, the air outlet end of the first air pipe is fixedly communicated with the outer wall of the heat insulation cover, the top end of the heat insulation cover is fixedly communicated with a second air pipe, the air outlet end of the second air pipe is fixedly communicated with the bottom end outer wall of the heat-conducting box, the top end of the heat-conducting box is fixedly communicated with a third air pipe, the air outlet end of the third air pipe is fixedly communicated with the outer wall of the feeding hopper, and the air outlet end of the third air pipe is communicated with the internal cavity of another U-shaped gas collecting cover.

[0012] In the above-mentioned fluctuation multi-element sieve, the dustproof mechanism comprises a plurality of hollow cylinders fixedly connected with the outer wall of one of the guardrails, the plurality of hollow cylinders are sequentially communicated through connecting pipes, the outer wall of one of the hollow cylinders is fixedly communicated with a fourth air pipe, the air outlet end of the fourth air pipe penetrates through the inner wall of the transparent collecting box, and a plurality of air inlet circular holes are formed in the outer wall of the plurality of hollow cylinders.

[0013] In the above-mentioned fluctuation multi-element sieve, the bottom end outer wall of the heat insulation cover is fixedly communicated with a drainage hose for discharging condensed water.

[0014] Compared with the prior art, the fluctuation multi-element sieve has the following advantages: 1. By means of the coal block material pretreatment mechanism, the material guiding mechanism and the driving mechanism, when the coal block material needs to be classified and screened by the fluctuation multi-element sieve, the coal block material is first conveyed to the dispersion mesh plate in the feeding hopper, then the PLC controller controls the driving mechanism to work, and the driving mechanism also assists the material guiding mechanism to work, so that the transparent collecting box is in a negative pressure environment, and the fine coal powder in the dispersed coal block material is sucked, thereby avoiding the fine coal powder from being scattered to pollute the environment and harm the health of workers, and the moisture sensor also detects the moisture of the collected fine coal powder, the higher the moisture, the greater the adhesion of the coal block material surface, and the speed of the driving motor is adaptively adjusted according to the adhesion, so that the transparent collecting box can collect the fine coal powder faster and better, and the fine coal powder with high adhesion is prevented from accumulating in the screen core screen hole of the fluctuation multi-element sieve body, the mechanism not only has the function of detecting the moisture of the coal block material, but also has the ability to collect the fine coal powder in the coal block material, and can reduce the adhesion of the coal block material in the fluctuation multi-element sieve, which can not only improve the classification and screening effect of the coal block material in the fluctuation multi-element sieve, but also improve the reliability of the fluctuation multi-element sieve.

[0015] 2、By setting the dustproof mechanism, the negative pressure transparent collection box in the suction hopper while sucking fine coal powder, through the fourth air pipe and a plurality of hollow cylinder suction fluctuation multiple sieve main body, air enters through the air inlet hole, air enters at the same time also carries the fine coal powder of fluctuation multiple sieve main body sieve box, further avoid fine coal powder pollution environment, and harm the health of staff, the mechanism can further avoid the harm caused by coal powder drift, improve the reliability of fluctuation multiple sieve work.

[0016] 3、By setting the auxiliary mechanism, when the air pump body sucks the air in the transparent collection box, the heat dissipation side of the semiconductor refrigeration piece is lifted by the heat dissipation plate and the heat dissipation net rack to improve the temperature in the transparent collection box and form a temperature rising area. After the temperature rises, the evaporation speed of the fine coal powder in the transparent collection box can be accelerated. The evaporated water is discharged through the multi-micropore protective sleeve and the conical ceramic filter cover, and then the evaporated water is transported to the low temperature environment of the refrigeration side of the semiconductor refrigeration piece and is liquefied by low temperature to remove moisture. The dehumidified air is transported to the heat dissipation box to improve the temperature, and finally the air with improved temperature is transported to the feed hopper. At this time, the hot air can not only dry the coal block material, but also blow off the fine coal powder adhered to the surface of the coal block material, improve the effect of fine coal powder collection, and reduce the adhesion of the coal block material surface. The screen hole of the screen core in the fluctuation multiple sieve body is adhered and blocked. The mechanism makes the fluctuation multiple sieve have the functions of drying and reducing the surface adhesion of the coal block material, improves the effect of classification and screening of the coal block material in the fluctuation multiple sieve, and improves the reliability of the use of the fluctuation multiple sieve. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of a fluctuation multiple sieve provided by the application. Figure 2 It is a structure schematic view of a coal block material pretreatment mechanism in a fluctuation multiple sieve provided by the application. Figure 3 It is a structure schematic view of a local amplification in a fluctuation multiple sieve provided by the application. Figure 4 It is a structure schematic view of an auxiliary mechanism in a fluctuation multiple sieve provided by the application. Figure 5 It is a structure schematic view of a dustproof mechanism in a fluctuation multiple sieve provided by the application. Figure 6 It is a structure schematic view of a part of a conical ceramic filter cover in a fluctuation multiple sieve provided by the application.

[0018] In the diagram: 1. Wave-shaped multi-element screen body; 2. Guardrail; 3. Feed hopper; 4. Coal lump material pretreatment mechanism; 41. U-shaped gas collection hood; 42. Air hole; 43. Dispersion mesh plate; 5. Material guiding mechanism; 51. Feed pipe; 52. Suction pump body; 53. Cylinder; 54. Sealed bearing; 55. Rotating rod; 56. Spiral blade; 57. Moisture sensor; 6. Drive mechanism; 61. Connecting rod; 62. L-shaped frame; 63. Drive motor; 64. First bevel gear; 65. Second bevel gear; 66. PLC controller; 7. Auxiliary mechanism; 71. Heat conduction box; 72. Heat conduction plate; 73. Heat conduction mesh frame; 74. Semiconductor cooling chip; 75. Heat conduction sheet; 76. Heat insulation cover; 77. First air pipe; 78. Second air pipe; 79. Third air pipe; 8. Dustproof mechanism; 81. Hollow cylinder; 82. Fourth air pipe; 83. Inlet round hole; 9. Discharge solenoid valve; 10. Transparent collection box; 11. Conical ceramic filter cover; 12. Multi-microporous protective sleeve; 13. Drainage hose. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-6 As shown, a vibrating multi-element screen includes a vibrating multi-element screen body 1, which further includes a screen box, screen core, vibrator, rotary motor, motor support, coal blockage sensor, hydraulic pump, and base assembly. The rotary motor is model YPT3. The 200L2-6 type motor is used, and the main body 1 of the wave multi-screen is existing technology, so it will not be described in detail here. The top two sides of the wave multi-screen main body 1 are hinged with guardrails 2. The feed inlet of the wave multi-screen main body 1 is fixedly connected to the feed hopper 3 by bolts. The inner wall of the feed hopper 3 is fixedly connected to the coal lump material pretreatment mechanism 4. The coal lump material pretreatment mechanism 4 includes two U-shaped gas collecting hoods 41. The two U-shaped gas collecting hoods 41 are symmetrically fixedly connected to the inner wall of the feed hopper 3. Multiple air holes 42 are opened on the outer wall of the opposite side of the two U-shaped gas collecting hoods 41. Multiple inclined dispersion screens 43 are fixedly connected to the outer wall of the opposite side of the two U-shaped gas collecting hoods 41. This mechanism can disperse the coal lump material and make it easier to collect the fine coal powder in the coal lump material.

[0021] The outer wall of the fluctuation multi-element sieve body 1 is fixedly connected with a transparent collecting box 10, and the inside of the transparent collecting box 10 can be additionally provided with porous adsorption materials (such as activated carbon blocks and high-temperature-resistant sponges), which can adsorb fine coal powder through the porous adsorption materials. The bottom end of the transparent collecting box 10 is fixedly connected with a discharge electromagnetic valve 9, and the upper surface of the transparent collecting box 10 is fixedly connected with a material guiding mechanism 5. The material guiding mechanism 5 comprises a feeding pipe 51 fixedly connected with the upper surface of the transparent collecting box 10 and an air suction pump body 52. A conical ceramic filter cover 11 is arranged below the air inlet end of the air suction pump body 52. The top end of the conical ceramic filter cover 11 is fixedly connected with the inner wall of the transparent collecting box 10. A multi-micropore protective sleeve 12 is fixedly sleeved with the outer wall of the conical ceramic filter cover 11. The multi-micropore protective sleeve 12 and the conical ceramic filter cover 11 can prevent the collected fine coal powder from running out and being wasted. The top end of the feeding pipe 51 is fixedly connected with a cylinder 53. The side end of the cylinder 53 is fixedly connected with the outer wall of the feeding hopper 3. The feeding port of the cylinder 53 is in communication with the inside of one of the U-shaped gas collecting covers 41. A sealing bearing 54 is fixedly connected with the side end inner wall of the cylinder 53. A rotating rod 55 is fixedly connected with the inner wall of the sealing bearing 54. A helical blade 56 in sealing sliding connection with the inner wall of the cylinder 53 is fixedly sleeved with the rod wall of the rotating rod 55. A through hole is formed in the outer wall of the feeding pipe 51, and a humidity sensor 57 is fixedly connected with the hole wall of the through hole.

[0022] A driving mechanism 6 is fixedly connected with the driving end of the air suction pump body 52. The driving mechanism 6 comprises a connecting rod 61 fixedly connected with the driving end of the air suction pump body 52. An L-shaped frame 62 is fixedly connected with the outer wall of the cylinder 53 and the upper surface of the transparent collecting box 10. A driving motor 63 is fixedly connected with the top end of the L-shaped frame 62. The driving end of the driving motor 63 is fixedly connected with the top end of the connecting rod 61. A first bevel gear 64 is fixedly sleeved with the rod wall of the connecting rod 61. A second bevel gear 65 vertically engaged with the first bevel gear 64 is fixedly connected with the side end of the rotating rod 55. A PLC controller 66 is fixedly connected with the outer wall of the L-shaped frame 62. This mechanism can prevent the fine coal powder from being accumulated in the cylinder 53 and being blocked.

[0023] The upper surface of the transparent collecting box 10 is provided with a rectangular through hole, and the hole wall of the rectangular through hole is fixedly connected with an auxiliary mechanism 7. The auxiliary mechanism 7 comprises a heat conduction box 71 fixedly embedded at the top of the transparent collecting box 10. The top end of the heat conduction box 71 is provided with a rectangular through hole, and the hole wall of the rectangular through hole is fixedly connected with a heat conduction plate 72. The bottom end of the heat conduction plate 72 is fixedly connected with a heat conduction net rack 73. The upper surface of the heat conduction plate 72 is fixedly connected with a plurality of semiconductor refrigeration pieces 74. The refrigeration sides of the plurality of semiconductor refrigeration pieces 74 are collectively fixedly connected with a heat conduction piece 75. The top end of the heat conduction box 71 is fixedly connected with a heat insulation cover 76. The heat conduction piece 75 is located inside the heat insulation cover 76. The gas outlet end of the air suction pump body 52 is fixedly communicated with a first air pipe 77. The gas outlet end of the first air pipe 77 is fixedly communicated with the outer wall of the heat insulation cover 76. The top end of the heat insulation cover 76 is fixedly communicated with a second air pipe 78. The gas outlet end of the second air pipe 78 is fixedly communicated with the bottom end outer wall of the heat conduction box 71. The top end of the heat conduction box 71 is fixedly communicated with a third air pipe 79. The gas outlet end of the third air pipe 79 is fixedly communicated with the outer wall of the feeding hopper 3. The gas outlet end of the third air pipe 79 is communicated with the internal cavity of the other U-shaped gas collecting cover 41. The bottom end outer wall of the heat insulation cover 76 is fixedly communicated with a drainage hose 13 for discharging condensed water. The drainage hose 13 can timely discharge condensed water, avoiding the adverse effects caused by excessive water in the heat insulation cover 76. This mechanism enables the fluctuating multi-element screen to have the functions of drying coal lumps and reducing surface adhesion.

[0024] One of the guardrails 2 is fixedly connected with a dust prevention mechanism 8 at the top outer wall. The dust prevention mechanism 8 comprises a plurality of hollow cylinders 81 fixedly connected with the outer wall of one of the guardrails 2. The plurality of hollow cylinders 81 are sequentially communicated through connecting pipes. The outer wall of one of the hollow cylinders 81 is fixedly communicated with a fourth air pipe 82. The gas outlet end of the fourth air pipe 82 penetrates through the inner wall of the transparent collecting box 10. The outer wall of the plurality of hollow cylinders 81 is provided with a plurality of air inlet circular holes 83. This mechanism can further avoid the harm caused by the scattering of coal powder and improve the reliability of the work of the fluctuating multi-element screen.

[0025] The wetness sensor 57 is electrically connected with the input end of the PLC controller 66 through wires. The driving motor 63, the discharging electromagnetic valve 9 and the semiconductor refrigeration piece 74 are all electrically connected with the output end of the PLC controller 66 through wires. The above power supply equipment and electrical connections are all prior art, and will not be described here.

[0026] The operation principle of the present application is described as follows: when the coal block material needs to be classified and screened by the fluctuation multi-element screen, the coal block material is firstly conveyed to the feeding hopper 3 by the belt conveyor, and then falls into the feeding hopper 3. The coal block material can be stably dropped into the screen box of the fluctuation multi-element screen main body 1 by the constraint of the feeding hopper 3, and is classified and screened by the screen core. Due to the constraint of the feeding hopper 3, the coal block material cannot fall off the screen box of the fluctuation multi-element screen main body 1, and the speed of the belt conveyor conveying the coal block material into the feeding hopper 3 also needs to be controlled to avoid the blockage of the coal block material in the feeding hopper 3 and the poor processing effect of the coal block material in the feeding hopper 3; Meanwhile, the PLC controller 66 not only controls the driving motor 63 to be powered on and started, but also controls a plurality of semiconductor refrigerating fins 74 to be powered on and worked. The driving motor 63 drives the connecting rod 61 to rotate quickly, and the connecting rod 61 drives the driving end of the air suction pump body 52 to rotate quickly, so that the impeller in the air suction pump body 52 rotates quickly. Then the air suction pump body 52 sucks the air in the transparent collecting box 10, so that the transparent collecting box 10 is in a negative pressure environment. In addition, the connecting rod 61 rotates to drive the rotating rod 55 to rotate through the first bevel gear 64 and the second bevel gear 65, and the rotating rod 55 drives the spiral blade 56 to rotate. The spiral blade 56 can convey the fine coal powder in the cylinder 53 during the rotation process, so as to avoid the blockage of the fine coal powder in the cylinder 53; The negative-pressure transparent collection box 10 draws air from the feed hopper 3 through the feed pipe 51 and the cylinder 53. This air carries fine coal powder from the coal lumps into the transparent collection box 10 for temporary storage. As the coal lumps fall through the feed hopper 3, they pass through multiple dispersing mesh plates 43. These plates disperse the coal lumps as much as possible, facilitating the collection of fine coal powder by the U-shaped gas collecting hood 41 located at the cylinder 53. This prevents the fine coal powder from scattering and polluting the environment and harming the health of workers. When the fine coal powder passes through the feed pipe 51, the moisture sensor 57 detects its moisture content. The moisture content reflects the adhesion of the coal lumps to the surface, because when the fine coal powder contains moisture, the water molecules... There is cohesive force between the coal particles and the water molecules on the surface of the coal. This adhesive force and the cohesive force of the water molecules together form the surface tension of the water. The higher the moisture content of the fine coal powder, the more water it contains, and the thicker the water film formed between the coal and the fine coal powder. A thicker water film makes the surface tension of the water more significant, thus enhancing the adhesion between the fine coal powder and the coal surface. This results in a greater adhesion force on the surface of the coal material. The moisture sensor 57 then converts the detected moisture value into an electrical signal and sends it to the PLC controller 66. If the moisture content of the coal material is higher, the PLC controller 66 automatically increases the pumping speed of the drive motor 63 based on the received moisture electrical signal. At this time, the drive motor 63 drives the connecting rod 61 to rotate at a higher speed, thereby improving the suction effect of the suction pump body 52 through the connecting rod 61. This further reduces the air pressure inside the transparent collection box 10, allowing the transparent collection box 10 to collect moist fine coal powder more quickly and effectively. It also further reduces the surface adhesion of the coal material, preventing moist and highly adhesive fine coal powder from accumulating in the screen holes of the wave-type multi-element screen body 1. At the same time, it avoids reducing the diameter of the screen holes, ensuring that moist fine coal powder can be reliably sucked and collected. Simultaneously, the increased speed of the connecting rod 61 synchronously increases the speed of the rotating rod 55. The increased speed of the rotating rod 55, in conjunction with the spiral blades 56, further prevents moist fine coal powder from accumulating. In the case of clogging caused by adhering to the inner wall of cylinder 53, conversely, when the moisture content of the coal material is low, the PLC controller 66 controls the speed of drive motor 63 to be reduced according to the received moisture content electrical signal, thereby reducing the energy consumption of drive motor 63 and improving the energy-saving performance of the equipment. This mechanism enables the vibrating multi-element screen to not only detect the moisture content of coal material, but also to collect fine coal powder in the coal material, avoiding material waste. Moreover, it can reduce the adhesion of coal material in the vibrating multi-element screen, which can not only improve the grading and screening effect of coal material in the vibrating multi-element screen, but also prevent the mesh of the screen core in the vibrating multi-element screen from clogging, thereby improving the reliability of the vibrating multi-element screen. The transparent negative pressure collecting box 10 not only sucks the fine coal powder in the suction hopper 3, but also sucks the air at the fluctuating multi-element sieve body 1 through the fourth air pipe 82 and the plurality of hollow cylinders 81, and the air enters through the air inlet circular hole 83, and the fine coal powder in the sieve box of the fluctuating multi-element sieve body 1 is carried in at the same time, thereby avoiding the fine coal powder from being scattered to pollute the environment and harm the health of the workers, and the mechanism can further avoid the harm caused by the scattering of the coal powder, and improve the reliability of the work of the fluctuating multi-element sieve; When the air suction pump body 52 sucks the air in the transparent collection box 10, the air first passes through the double purification of the multi-microporous protective sleeve 12 and the conical ceramic filter cover 11, and at the same time, the heat dissipation side of the plurality of semiconductor refrigeration pieces 74 passes through the heat conduction plate 72 and the heat conduction net rack 73 to raise the temperature in the heat conduction box 71 and form a temperature raising area, and the heat of the temperature raising area is transmitted to the transparent collection box 10, so that the temperature in the transparent collection box 10 is also raised accordingly. The heat of the temperature raising area is derived from the heat dissipation side of the semiconductor refrigeration piece 74, and due to the heat dissipation characteristics of the semiconductor refrigeration piece 74 itself and the influence of the flowing air, the temperature of the temperature raising area will not be too high (below 80 degrees Celsius), and there will be no excessive heat transmitted to the transparent collection box 10, and the air inside the transparent collection box 10 is also in a flowing state, so that the temperature inside the transparent collection box 10 will not exceed the ignition point of dust explosion, in addition, the porous adsorption material installed inside the transparent collection box 10 can adsorb fine coal powder by reducing the suspended concentration of fine coal powder in the transparent collection box 10, further avoiding the required conditions of dust explosion, ensuring that there is no hidden danger of dust explosion in the working process of the device, improving the safety of the device, and raising the temperature to speed up the evaporation speed of the moisture of the fine coal powder in the transparent collection box 10. The evaporated moisture is discharged through the multi-microporous protective sleeve 12 and the conical ceramic filter cover 11, and then the moisture and air are transported to the heat shield 76 through the first air pipe 77, while the heat shield 76 is affected by the refrigeration side of the plurality of semiconductor refrigeration pieces 74 and has a low temperature. When the evaporated moisture encounters a low-temperature environment, it is liquefied and condensed into water droplets, achieving the purpose of dehumidifying the air. The water droplets are discharged with part of the air through the drain hose 13, and the dehumidified air enters the temperature raising area of the heat conduction box 71 through the second air pipe 78, and the temperature is further raised. The air with raised temperature returns to the feed hopper 3 through the third air pipe 79. At this time, the hot air blown out not only can dry the lump coal material, but also can blow off the fine coal powder adhered to the surface of the lump coal material, so that the fine coal powder is better separated from the lump coal and collected by the negative pressure transparent collection box 10, improving the collection effect of the fine coal powder. At the same time, it can reduce the adhesion of the lump coal material surface, avoid the screen holes of the screen core in the fluctuating multi-element sieve body 1 being adhered and blocked by fine coal powder, so that the lump coal material can be reliably classified and screened in the fluctuating multi-element sieve body 1, further improving the screening effect of the fluctuating multi-element sieve body 1. After that, if the staff finds that the amount of fine coal powder in the transparent collection box 10 gradually increases to three- fifths of the volume of the transparent collection box 10, the staff controls the discharge electromagnetic valve 9 to open through the operation panel and PLC controller 66, so that the fine coal powder in the transparent collection box 10 is transported to the corresponding collection container. After the fine coal powder is discharged, the PLC controller 66 controls the discharge electromagnetic valve 9 to close. The mechanism makes the fluctuating multi-element sieve have the functions of drying the lump coal material and reducing the surface adhesion. This not only can improve the collection effect of the fine coal powder, but also can avoid the fine coal powder from polluting the environment, and improve the classification and screening effect of the lump coal material in the fluctuating multi-element sieve, and improve the reliability of the use of the fluctuating multi-element sieve.

[0027] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wobbler polycom, comprising a wobbler polycom body (1), characterized in that, The top of the wave multi-element sieve body (1) is hinged with a guardrail (2) on both sides through a hinge, and the feed inlet of the wave multi-element sieve body (1) is fixedly connected with a feed hopper (3) through bolts, and the inner wall of the feed hopper (3) is fixedly connected with a coal block material pretreatment mechanism (4); The outer wall of the wave multi-element sieve body (1) is fixedly connected with a transparent collecting box (10), the bottom of the transparent collecting box (10) is fixedly connected with a discharge electromagnetic valve (9), and the upper surface of the transparent collecting box (10) is fixedly connected with a material guiding mechanism (5); The upper surface of the transparent collecting box (10) is provided with a rectangular through hole, and the hole wall of the rectangular through hole is fixedly connected with an auxiliary mechanism (7); The outer wall of the top of one of the guardrails (2) is fixedly connected with a dustproof mechanism (8).

2. A wave flow multi-element screen according to claim 1, wherein, The coal block material pretreatment mechanism (4) comprises two U-shaped gas collectors (41), the two U-shaped gas collectors (41) are fixedly connected with the inner wall of the feed hopper (3) in a symmetrical manner, a plurality of air holes (42) are formed in the outer wall of the opposite side of each of the two U-shaped gas collectors (41), and a plurality of inclined dispersion mesh plates (43) are fixedly connected to the outer wall of the opposite side of each of the two U-shaped gas collectors (41).

3. A wave flow multi-element screen according to claim 2, wherein, The material guiding mechanism (5) comprises a feed pipe (51) and an air suction pump body (52) fixedly connected with the upper surface of the transparent collecting box (10), the top of the feed pipe (51) is fixedly connected with a cylinder (53), the side end of the cylinder (53) is fixedly connected with the outer wall of the feed hopper (3), the feed inlet of the cylinder (53) is in communication with the interior of one of the U-shaped gas collectors (41), the side end inner wall of the cylinder (53) is fixedly connected with a sealing bearing (54), the inner wall of the sealing bearing (54) is fixedly connected with a rotating rod (55), the rod wall of the rotating rod (55) is fixedly sleeved with a helical blade (56) in sealing sliding connection with the inner wall of the cylinder (53), the outer wall of the feed pipe (51) is provided with a through hole, and the hole wall of the through hole is fixedly connected with a humidity sensor (57), and the driving end of the air suction pump body (52) is fixedly connected with a driving mechanism (6).

4. A wave flow multi-element screen according to claim 3, wherein, The driving mechanism (6) comprises a connecting rod (61) fixedly connected with the driving end of the air suction pump body (52), an L-shaped frame (62) fixedly connected with the outer wall of the cylinder (53) and the upper surface of the transparent collecting box (10), a driving motor (63) fixedly connected with the top of the L-shaped frame (62), the driving end of the driving motor (63) penetrating through the L-shaped frame (62) is fixedly connected with the top of the connecting rod (61), the rod wall of the connecting rod (61) is fixedly sleeved with a first bevel gear (64), the side end of the rotating rod (55) is fixedly connected with a second bevel gear (65) in perpendicular engagement with the first bevel gear (64), and the outer wall of the L-shaped frame (62) is fixedly connected with a PLC controller (66).

5. A wave flow multi-element screen according to claim 3 wherein, The air suction pump body (52) is provided with a conical ceramic filter cover (11) below the air inlet end, the top end of the conical ceramic filter cover (11) is fixedly connected with the inner wall of the transparent collection box (10), and the outer wall of the conical ceramic filter cover (11) is fixedly sleeved with a microporous protective sleeve (12).

6. A wave flow multi-element screen according to claim 3 wherein, The auxiliary mechanism (7) comprises a heat-conducting box (71) fixedly embedded at the top of the transparent collection box (10), a rectangular through hole is formed in the top end of the heat-conducting box (71), and the hole wall of the rectangular through hole is fixedly connected with a heat-conducting plate (72), the bottom end of the heat-conducting plate (72) is fixedly connected with a heat-conducting net rack (73), the upper surface of the heat-conducting plate (72) is fixedly connected with a plurality of semiconductor refrigeration fins (74), the refrigeration sides of the plurality of semiconductor refrigeration fins (74) are fixedly connected with a heat-conducting fin (75) in common, the top end of the heat-conducting box (71) is fixedly connected with a heat insulation cover (76), the heat-conducting fin (75) is located on the inner side of the heat insulation cover (76), the air outlet end of the air suction pump body (52) is fixedly communicated with a first air pipe (77), the air outlet end of the first air pipe (77) is fixedly communicated with the outer wall of the heat insulation cover (76), the top end of the heat insulation cover (76) is fixedly communicated with a second air pipe (78), the air outlet end of the second air pipe (78) is fixedly communicated with the bottom outer wall of the heat-conducting box (71), the top end of the heat-conducting box (71) is fixedly communicated with a third air pipe (79), the air outlet end of the third air pipe (79) is fixedly communicated with the outer wall of the feeding hopper (3), and the air outlet end of the third air pipe (79) is communicated with the internal cavity of the other U-shaped gas collection cover (41).

7. A wave flow multi-element screen according to claim 1 wherein, The dustproof mechanism (8) comprises a plurality of hollow cylinders (81) fixedly connected with the outer wall of one of the guardrails (2), the plurality of hollow cylinders (81) are communicated through connection pipes in sequence, the outer wall of one of the hollow cylinders (81) is fixedly communicated with a fourth air pipe (82), the air outlet end of the fourth air pipe (82) penetrates the inner wall of the transparent collection box (10), and the outer wall of the plurality of hollow cylinders (81) is provided with a plurality of air inlet circular holes (83).

8. A wave flow multi-element screen according to claim 6 wherein, The bottom outer wall of the heat insulation cover (76) is fixedly communicated with a drainage hose (13) for discharging condensed water.

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