Dust suppression device for quartz crushing

Abstract

The dust suppression device comprises a dust suction hood, a fan is rotationally arranged in the dust suction hood, a first motor is arranged at the top of the dust suction hood, an output shaft of the first motor is fixed to the fan, an air curtain ring is arranged at the lower end of the dust suction hood, an air pump is connected to the air curtain ring, and the air curtain ring can blow out high-speed airflow downwards under the action of the air pump. A flow guide impeller is arranged at the lower end of the fan, and blades are arranged on the flow guide impeller in an array mode. The air curtain ring can blow out high-speed annular airflow downwards, the annular airflow forms a layer of blocking air curtain, dust is prevented from escaping outwards, and meanwhile dust at the feeding opening of the roll crusher is blocked within a limited range.

Description

Technical Field

[0001] The invention belongs to the technical field of quartz dust removal, and specifically refers to a dust suppression device for quartz crushing. Background Art

[0002] The double-roll crusher crushes the material by squeezing it with two rollers rotating in opposite directions. It has the advantages of small size, large crushing ratio, simple structure and convenient maintenance. The double-roll crusher is often used to crush quartz ore to obtain materials with uniform particle size.

[0003] A lot of dust is generated during the crushing process of quartz ore. Due to the structural characteristics of the double-roll crusher, the two crushing rollers and the feed port are open structures. Therefore, the dust generated by crushing is concentrated at the feed port and escapes upward from the feed port, generating a large number of polluted particles. During the operation, the area where personnel intrude the most is also the feed port, and the dust escaping upward has a great impact on the respiratory health of personnel. If spray dust removal equipment is added at the feed port, it will affect the operator's observation of the crushing situation in the equipment. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a dust suppression device for quartz crushing, which at least partially solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: A dust suppression device for quartz crushing proposed by the present invention includes a dust hood for absorbing dust, the dust hood includes an open cone, an inward cone is provided at the lower end of the open cone, and air holes are provided in a circular array on the inward cone.

[0006] Furthermore, a spray chamber is provided at the upper end of the open cone, a fixing hole is provided in a circumferential array on the upper wall of the spray chamber, and a flow guide hole is provided on the side wall of the spray chamber.

[0007] Furthermore, a fan is rotatably provided in the dust hood, a first motor is connected to the center of the fan, and the first motor is fixed on the top of the dust hood.

[0008] Furthermore, a wind curtain ring is provided at the lower end of the dust hood, the lower end of the wind curtain ring is connected to the air hole, an air inlet pipe is provided on the wind curtain ring, and an air pump is connected to the air inlet pipe. The wind curtain ring blows out high-speed airflow downward under the action of the air pump.

[0009] Furthermore, in order to enhance the suction force of the gas at the lower end of the dust hood, a guide impeller is fixed at the lower end of the fan, and an array of blades is arranged on the guide impeller, and the rotation radius of the lower end of the blade is smaller than the rotation radius of the upper end.

[0010] Furthermore, in order to discharge the dust-containing gas delivered by the fan, a guide pipe is connected to the guide hole, and a filter is arranged in the guide pipe.

[0011] Furthermore, in order to facilitate the cleaning of impurities filtered out by the filter, the guide pipe includes a right-angle ventilation pipe, the upper end of the right-angle ventilation pipe is connected to the guide hole, the lower end of the right-angle ventilation pipe is connected to the tail end ventilation pipe, the opening end of the tail end ventilation pipe is arranged obliquely upward, and a collecting trough is provided below the connection between the right-angle ventilation pipe and the tail end ventilation pipe, and a bottom plate is provided at the lower end of the collecting trough.

[0012] Furthermore, in order to remove stubborn impurities adhering to the filter screen, the side wall of the collecting tank is provided with an inclined plate, and a vibration rod capable of reciprocating sliding is vertically provided at the center of the inclined plate, and one end of the vibration rod is provided on the filter screen.

[0013] Furthermore, in order to make the vibration rod vibrate reciprocatingly, a flange plate is provided on the vibration rod, a spring is connected between the flange plate and the inclined plate, a second motor is fixed to the outer wall of the inclined plate, a cam is provided on the output shaft of the second motor, a connecting rod is provided on the edge of the cam, and the connecting rod is slidably provided on the vibration rod.

[0014] Furthermore, in order to improve the dust suppression effect, a spray ring is provided on the upper wall of the spray chamber, a water inlet pipe is provided at the upper end of the spray ring, and spray pipes are provided in a circular array at the lower end of the spray ring, and the spray pipes are penetrated in the fixing holes.

[0015] The beneficial effects achieved by the present invention are as follows: 1. The air curtain ring can blow out high-speed annular airflow downward, so that the annular airflow forms a barrier air curtain, which blocks the dust at the feeding port of the double-roll crusher within a limited range. While preventing the dust from escaping to the outside, it will not hinder the operator's field of vision inside the equipment; 2. The guide impeller can cooperate with the fan and the air curtain ring to guide the dust below upward, so that the dust is subjected to an upward rotating force, which promotes the dust to be discharged outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a dust suppression device for quartz crushing according to an embodiment of the present invention; Figure 2 is a cross-sectional view of the flow guide tube; Figure 3 for Figure 2 A magnified view of part I; Figure 4 It is a schematic diagram of the internal structure of the dust hood; Figure 5 is a cross-sectional view of a dust hood; Figure 6 It is a structural schematic diagram of the guide impeller.

[0017] Among them, 1. dust hood, 2. wind curtain ring, 2-1. air inlet pipe, 3. air pump, 4. first motor, 5. spray ring, 5-1. water inlet pipe, 6. guide pipe, 7. right-angle ventilation pipe, 8. tail end ventilation pipe, 9. filter, 10. vibration rod, 11. collecting trough, 12. bottom plate, 13. inclined plate, 14. flange plate, 15. spring, 16. second motor, 17. cam, 18. connecting rod, 19. guide impeller, 20. spray pipe, 21. fan, 22. open cone, 23. inward cone, 24. air hole, 25. spray chamber, 26. fixing hole, 27. guide hole, 28. blade.

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0021] like Figure 1 and Figure 5 As shown, a dust suppression device for quartz crushing proposed in an embodiment of the present invention includes a dust hood 1, which is placed just above the feeding port of the double-roll crusher for adsorbing dust. The dust hood 1 includes an opening cone 22, the opening of the opening cone 22 is downward so as to cover a larger adsorption area, an inward cone 23 is provided at the lower end of the opening cone 22, the lower end of the inward cone 23 is inclined inward, and a circular array of air holes 24 is provided on the inward cone 23.

[0022] A spray chamber 25 is provided at the upper end of the opening cone 22 . A circumferential array of fixing holes 26 is provided on the upper wall of the spray chamber 25 . A flow guide hole 27 is provided on the side wall of the spray chamber 25 .

[0023] like Figure 4As shown, a fan 21 is rotatably provided inside the dust hood 1, a first motor 4 is connected to the center of the fan 21, an output shaft of the first motor 4 is fixed on the fan 21, the fan 21 rotates under the action of the first motor 4, and the gas at the lower end of the fan 21 is transported to the upper end of the fan 21, so as to transport the dust in the area covered by the dust hood 1 out, and the first motor 4 is fixed on the top of the dust hood 1.

[0024] A wind curtain ring 2 is provided at the lower end of the dust hood 1, and the lower end of the wind curtain ring 2 is connected to the air hole 24. An air inlet pipe 2-1 is provided on the wind curtain ring 2, and an air pump 3 is connected to the air inlet pipe 2-1. The air pump 3 can introduce high-speed gas into the wind curtain ring 2 through the air inlet pipe 2-1, so that the wind curtain ring 2 blows out a high-speed airflow downward under the action of the air pump 3. The high-speed airflow is blown into the inward cone 23 through the air hole 24 and blown out from the inward cone 23. The blown gas forms a layer of air curtain with a certain thickness. The lower end of the air curtain points to the center direction of the dust hood 1, that is, to the feeding port direction of the double-roll crusher. This air curtain can block the dust at the lower end of the dust hood 1 from the external space to prevent the dust from escaping to the external area.

[0025] like Figure 6 As shown, in order to enhance the suction force of the gas at the lower end of the dust hood 1, a guide impeller 19 is fixed to the lower end of the fan 21, and blades 28 are arranged in an array on the guide impeller 19. The rotation radius of the lower end of the blade 28 is smaller than the rotation radius of the upper end. When the guide impeller 19 rotates, the air at the lower end of the dust hood 1 can be rotated to form a vortex, and this vortex is in a spiral ascending state, thereby enhancing the cohesion of the air below and reducing the gas from escaping to the outside. Combined with the air curtain blown out by the wind curtain ring 2, the gas moves upward in a closed state, and the rotation radius of the lower end of the blade 28 is small, which can reduce the disturbance to the lowermost area of ​​the dust hood 1 and avoid causing greater disturbance to the gas in the farthest area of ​​the wind curtain ring 2, causing it to escape to the outside.

[0026] In order to discharge the dusty gas delivered by the fan 21, Figure 2 As shown, the guide hole 27 is connected to a guide pipe 6, and a filter screen 9 is arranged inside the guide pipe 6. After the gas enters the guide pipe 6, dust and impurities are filtered out by the filter screen 9 and then the gas is discharged harmlessly.

[0027] In order to facilitate the cleaning of impurities filtered out by the filter screen 9, the guide pipe 6 includes a right-angle ventilation pipe 7, the upper end of the right-angle ventilation pipe 7 is connected to the guide hole 27, and the lower end of the right-angle ventilation pipe 7 is connected to the tail end ventilation pipe 8. The open end of the tail end ventilation pipe 8 is arranged obliquely upward, and a collecting groove 11 is provided below the connection between the right-angle ventilation pipe 7 and the tail end ventilation pipe 8. A bottom plate 12 is provided at the lower end of the collecting groove 11. Because the tail end ventilation pipe 8 is inclined, after the filter screen 9 filters the impurities, the impurities slide downward under the action of gravity and fall into the collecting groove 11. After removing the bottom plate 12, the impurities in the collecting groove 11 can be cleaned.

[0028] Combination Figure 3 As shown, in order to remove stubborn impurities adhered to the filter 9, an inclined plate 13 is provided on the side wall of the collecting tank 11, and a vibration rod 10 capable of reciprocating sliding is vertically provided at the center of the inclined plate 13. One end of the vibration rod 10 is provided on the filter 9. When the vibration rod 10 slides back and forth and vibrates, the filter 9 continues to vibrate and shakes off the adherent matter in the mesh, thereby achieving the effect of cleaning the filter 9.

[0029] In order to make the vibration rod 10 vibrate back and forth, a flange plate 14 is provided on the vibration rod 10, and a spring 15 is connected between the flange plate 14 and the inclined plate 13. The spring 15 has a certain buffering effect. A second motor 16 is fixed to the outer wall of the inclined plate 13, and a cam 17 is provided on the output shaft of the second motor 16. A connecting rod 18 is provided on the edge of the cam 17. The connecting rod 18 is slidably arranged on the vibration rod 10. When the cam 17 rotates back and forth, the connecting rod 18 slides back and forth in a direction perpendicular to the vibration rod 10, and moves back and forth in a direction parallel to the vibration rod 10, so that the vibration sense vibrates back and forth in a direction perpendicular to the filter 9, and finally drives the filter 9 to vibrate.

[0030] In order to improve the dust suppression effect, a spray ring 5 is provided on the upper wall of the spray chamber 25, a water inlet pipe 5-1 is provided at the upper end of the spray ring 5, and a spray pipe 20 is provided in a circular array at the lower end of the spray ring 5. The spray pipe 20 passes through the fixed hole 26. When external liquid enters the spray pipe 20 from the water inlet pipe 5-1 and the spray ring 5, the small holes in the circular array on the outer wall of the spray pipe 20 will spray liquid droplets covering the entire space all around, and the water droplets fall downward under the action of gravity and interfere with the fan 21. The fan 21 further breaks up the water droplets into atomization, so that the atomized liquid fills the coverage area of ​​the dust hood 1, and combines with impurities in the air, and is finally discharged into the guide pipe 6 along with the gas.

[0031] The dust cover 1 of the device is placed just above the feeding port of the double-roll crusher. When working, the first motor 4 and the air pump 3 are started, and liquid is introduced into the water inlet pipe 5-1 at the same time.

[0032] The first motor 4 drives the fan 21 and the guide impeller 19 to rotate rapidly, so that the gas and dust below the dust hood 1 move upward. The guide impeller 19 can make the gas below spiral upward, enhance the cohesion of the dust gas, and prevent the gas below the dust hood 1 from escaping.

[0033] At the same time, the gas from the air pump 3 enters the air hole 24 from the air curtain ring 2 and is ejected obliquely downward from the inward-facing cone 23, so that a sealed air curtain with a certain radius is formed under the dust hood 1, isolating the area above the feeding port of the double-roll crusher from the external area to prevent dust from escaping to the surrounding area.

[0034] The wind curtain ring 2 and the guide impeller 19 can prevent dust gas from escaping to the outside, and the spray ring 5 sprays a large number of liquid water droplets into the dust hood 1 through the spray pipe 20. The water droplets move downward under the action of gravity and are broken into mist by the fan 21. The water mist will combine and adhere to the dust in the air to achieve a better dust suppression effect.

[0035] The water mist adhered to the dust enters the tail end ventilation pipe 8 along the right-angle ventilation pipe 7, and is blocked and filtered by the filter 9 in the tail end ventilation pipe 8 to prevent the dust from being directly discharged into the air. The large particles of dust intercepted by the filter 9 will automatically fall into the collection tank 11 under the action of gravity. At this time, the bottom plate 12 can be removed to clean the dust in the collection tank 11.

[0036] When the mesh of the filter 9 is clogged, the clogs in the mesh cannot fall off automatically. At this time, the second motor 16 can be started. The second motor 16 drives the connecting rod 18 to vibrate back and forth through the cam 17. The connecting rod 18 drives the vibration rod 10 to vibrate back and forth. The vibration rod 10 makes the filter 9 vibrate at a high frequency and shakes off the clogs in the filter 9. If necessary, a high-pressure water gun can be used to reversely flush the filter 9 from the tail end ventilation pipe 8 to the direction of the filter 9.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A dust suppression device for quartz crushing, characterized in that: include: A dust hood (1) is placed just above the feeding port of the double-roll crusher, a fan (21) is rotatably arranged inside the dust hood (1), a first motor (4) is arranged on the top of the dust hood (1), and an output shaft of the first motor (4) is fixed on the fan (21); An air curtain ring (2) is fixed to the lower end of the dust hood (1); the air curtain ring (2) is connected to an air pump (3) via an air inlet pipe (2-1); the air curtain ring (2) is capable of blowing out a high-speed airflow downward under the action of the air pump (3); The guide impeller (19) is fixed to the lower end of the fan (21), and comprises blades (28) arranged in an array, wherein the lower ends of the blades (28) have a first rotation radius, and the upper ends of the blades (28) have a second rotation radius, and the first rotation radius is smaller than the second rotation radius.

2. The dust suppression device for quartz crushing according to claim 1, characterized in that: The dust hood (1) comprises an open cone (22), an inwardly buckled cone (23) is provided at the lower end of the open cone (22), air holes (24) are provided in a circumferential array on the upper side of the inwardly buckled cone (23), a spray chamber (25) is provided at the upper end of the open cone (22), fixing holes (26) are provided in a circumferential array on the upper wall of the spray chamber (25), and a flow guide hole (27) is provided on the side wall of the spray chamber (25).

3. The dust suppression device for quartz crushing according to claim 2, characterized in that: The lower end of the air curtain ring (2) is in communication with the air hole (24).

4. The dust suppression device for quartz crushing according to claim 2, characterized in that: A spray ring (5) is provided on the upper wall of the spray chamber (25), a water inlet pipe (5-1) is provided at the upper end of the spray ring (5), and spray pipes (20) are provided in a circular array at the lower end of the spray ring (5), and the spray pipes (20) are penetrated in the fixing holes (26).

5. The dust suppression device for quartz crushing according to claim 2, characterized in that: The flow guide hole (27) is connected to a flow guide pipe (6), and a filter screen (9) is provided in the flow guide pipe (6).

6. The dust suppression device for quartz crushing according to claim 5, characterized in that: The flow guide pipe (6) comprises a right-angled vent pipe (7), the upper end of the right-angled vent pipe (7) is connected to the flow guide hole (27), the lower end of the right-angled vent pipe (7) is connected to a tail vent pipe (8), and the opening end of the tail vent pipe (8) is arranged obliquely upward.

7. The dust suppression device for quartz crushing according to claim 6, characterized in that: A collecting trough (11) is provided below the connection between the right-angle vent pipe (7) and the tail end vent pipe (8), and a bottom plate (12) is provided at the lower end of the collecting trough (11).

8. The dust suppression device for quartz crushing according to claim 7, characterized in that: The side wall of the collecting tank (11) is provided with an inclined plate (13), and a vibration rod (10) capable of reciprocating sliding is vertically provided at the center of the inclined plate (13), and one end of the vibration rod (10) is provided on the filter screen (9).

9. The dust suppression device for quartz crushing according to claim 8, characterized in that: The vibration rod (10) is provided with a flange plate (14), a spring (15) is connected between the flange plate (14) and the inclined plate (13), a second motor (16) is fixed to the outer wall of the inclined plate (13), a cam (17) is provided on the output shaft of the second motor (16), a connecting rod (18) is provided on the edge of the cam (17), and the connecting rod (18) is slidably arranged on the vibration rod (10).

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