CN210794360U - Active dust suppression hopper - Google Patents
Active dust suppression hopper Download PDFInfo
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- CN210794360U CN210794360U CN201921681450.6U CN201921681450U CN210794360U CN 210794360 U CN210794360 U CN 210794360U CN 201921681450 U CN201921681450 U CN 201921681450U CN 210794360 U CN210794360 U CN 210794360U
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Abstract
The utility model discloses an active dust suppression hopper, including at least one hopper, at least one guide subassembly, the guide subassembly with the hopper one-to-one sets up, each the guide subassembly includes fixed axle, two at least stock guides, place in the fixed axle is coaxial the hopper, the stock guide is the spiral, the stock guide is followed place in the axial of fixed axle the hopper, and at least two the stock guide is followed the circumference evenly distributed of fixed axle, the inner edge of stock guide connect in fixed axle, outer fringe connect in the inner wall of hopper. The utility model discloses can effectively restrain the material and fall into the outside powder that escapes of hopper in-process.
Description
Technical Field
The utility model relates to a hopper presses down dirt technical field, concretely relates to active dust suppression hopper.
Background
When bulk materials such as coal, ore and grain are transferred, the bulk materials are usually transferred by adopting a hopper as a medium and then are conveyed to a destination by a belt conveyor, a truck and the like.
The in-process of conveying equipment with the bulk cargo material into the hopper, the bulk cargo material falls into the hopper from the hopper top in, and the in-process that the bulk cargo material falls into the hopper easily produces a large amount of dust, causes dust pollution, seriously threatens staff's healthy and operation safety.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide an active dust suppression hopper, solve among the prior art bulk cargo and fall into the in-process of hopper and can produce the technical problem of a large amount of dusts.
In order to achieve the technical purpose, the technical scheme of the utility model provide an active dust suppression hopper, a serial communication port, include:
at least one hopper;
at least one guide subassembly, the guide subassembly with the hopper one-to-one sets up, each the guide subassembly includes fixed axle, two at least stock guides, place in the fixed axle is coaxial the hopper, the stock guide is the spiral, the stock guide is followed place in the axial of fixed axle the hopper, and at least two the stock guide is followed the circumference evenly distributed of fixed axle, the inner edge of stock guide connect in fixed axle, outer fringe connect in the inner wall of hopper.
Compared with the prior art, the beneficial effects of the utility model include: through set up the fixed axle in the hopper, be spiral helicine deflector, the material falls into the hopper after, along the direction landing of deflector to the bottom of hopper, can change the motion trail that the granule flows, increases the continuous friction between material process granule and stock guide and granule and the granule to reduce the velocity of motion that the granule flows and the collision dynamics of granule and hopper, finally realize suppressing the production of dust.
Drawings
Fig. 1 is a three-dimensional schematic view of the present invention;
fig. 2 is a schematic structural diagram of the present invention;
FIG. 3 is a cross-sectional view taken along line E-E of FIG. 2;
fig. 4 is a schematic structural diagram of an active dust suppression hopper according to a second embodiment of the present invention;
fig. 5 is a three-dimensional schematic view of an active dust suppression hopper according to the fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an active dust suppression hopper according to a fifth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an active dust suppression hopper according to a sixth embodiment of the present invention;
FIG. 8 is a line graph showing the variation in the velocity of particle movement during feeding;
FIG. 9 is a line graph of velocity change upon particle impact;
FIG. 10 is a cloud of flow field velocities of a material falling in a normal hopper for 1 second;
FIG. 11 is a cloud of flow field velocities after a material falls for 1.2 seconds as it falls into a conventional hopper;
FIG. 12 is a cloud of flow field velocities after 2.8 seconds of material fall as it falls into a conventional hopper;
FIG. 13 is a flow chart of the flow field velocity after the material falls for 1 second when falling into a normal hopper;
FIG. 14 is a flow chart of the flow field velocity after the material falls for 1.2 seconds when falling into a normal hopper;
FIG. 15 is a flow chart of the flow field velocity after the material falls for 2.8 seconds when falling into a normal hopper;
FIG. 16 is a flow field velocity/velocity diagram of the initial collision of the material with the deflector and the hopper when the material falls into the active dust suppression hopper of the present invention;
FIG. 17 is a cloud of flow field velocities of the initial impact of the material with the deflector, hopper when the material falls into the active dust suppression hopper of the present invention;
FIG. 18 is a flow field velocity vector diagram of the initial collision of the material with the deflector and the hopper when the material falls into the active dust suppression hopper of the present invention;
FIG. 19 is a flow chart of the flow field velocity at the stage of material falling into the active dust suppressing hopper of the present invention;
FIG. 20 is a cloud of flow field velocities at a stage of material falling into the active dust suppression hopper of the present invention;
FIG. 21 is a flow field velocity vector diagram of the stage of material falling when a material falls into the active dust suppression hopper of the present invention;
FIG. 22 is a flow chart of the flow field velocity during the material accumulation phase when a material falls into the active dust suppression hopper of the present invention;
FIG. 23 is a cloud of flow field velocities at the material accumulation stage when a material falls into the active dust suppression hopper of the present invention;
figure 24 is the material falls into the active dust suppression hopper when the material pile up the flow field velocity vector diagram of stage.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
the utility model provides an active dust suppression hopper, as shown in fig. 1 to 24, including at least one hopper 1, at least one guide subassembly 2, at least one valve 3, the inside hollow and both ends opening of hopper 1.
The material guiding assemblies 2 are arranged corresponding to the hoppers 1 one by one, each material guiding assembly 2 comprises a fixing shaft 21, at least two material guiding plates 22, the fixing shaft 21 is coaxially arranged in the hoppers 1, the material guiding plates 22 are spiral, the material guiding plates 22 are arranged in the hoppers 1 along the axial direction of the fixing shaft 21, at least two material guiding plates 22 are uniformly distributed along the circumferential direction of the fixing shaft 21, the inner edges of the material guiding plates 22 are connected to the fixing shaft 21, the outer edges of the material guiding plates 22 are connected to the inner wall of the hoppers 1, the number of the material guiding plates 22 in each material guiding assembly 2 can be two, three, four, five, six and the like, preferably, each material guiding assembly 2 comprises four material guiding plates 22, and the four material guiding plates.
The valves 3 are arranged corresponding to the hoppers 1 one by one, and the valves 3 are arranged at the discharge ends of the hoppers 1.
The specific working process is as follows: bulk materials are conveyed to the upper part of the hopper 1 through the grab bucket, the grab bucket releases the materials, the materials fall into the hopper 1 and slide into the hopper 1 along the guide spiral of the guide plate 22, after all the materials enter the hopper 1, the materials are conveyed to a preset area through the hopper 1, then the valve 3 is opened, and the materials reach a specified place from the discharge end of the hopper 1.
The utility model discloses a set up spiral helicine stock guide 22 in hopper 1, can change the commentaries on classics of granule stream and expect height and movement track, increase and change the continuous friction between material process granule and stock guide 22 and granule and the granule to reduce the velocity of motion that the granule flows and the collision dynamics of granule and hopper 1, finally realize restraining the production of dust.
Example two:
as shown in fig. 4, the same points of the second embodiment as those of the first embodiment will not be described, and the second embodiment is different from the first embodiment in that the number of the hoppers 1 is plural, the axes of the plural hoppers 1 are parallel to each other, and the adjacent hoppers 1 are connected to each other.
Preferably, the number of the hoppers 1 can be three, four, five, six and the like, and further preferably, the number of the hoppers 1 is four, the four hoppers 1 are distributed in a rectangular shape, and the four hoppers are connected through the fixing blocks.
Example three:
as shown in fig. 2, the same points of the third embodiment as those of the first embodiment are not described, but the third embodiment is different from the first embodiment in that a first cavity and a second cavity are formed in the hopper 1, the first cavity is cylindrical, the second cavity is truncated cone-shaped, the second cavity is located below the first cavity, one end of the second cavity is communicated with the first cavity, and the inner diameter of the second cavity is continuously reduced along the direction away from the first cavity; the fixed shaft 21 and the material guide plate 22 are coaxially arranged in the first cavity.
Further preferably, the diameter of the inner wall of the first cavity is 3 meters, the height of the second cavity is 1.2 meters, an included angle between the inner wall of the second cavity and the horizontal plane is 50 degrees, and the screw pitch of the material guide plate 22 is 5 meters.
The pitch of the guide plate 22 and 5m make the inclination angle of the guide plate 22 proper, thereby avoiding material blockage and simultaneously improving the friction between the particle flow and the guide plate 22.
The simulation test is as follows: particles and gas influence each other in the process of feeding the particle materials into the hopper 1, and the problem of gas-solid two-phase flow is solved. Computational Fluid Dynamics (CFD) can process numerical simulation of a complex geometric model, and a Discrete Element Method (DEM) can process particle-particle and particle-wall collision problems, so that a CFD-DEM coupling Method is adopted to carry out simulation solution on the feeding process of the active dust suppression hopper.
S1 particle phase control equation
The particles are regarded as discrete phases in the CFD-DEM, the discrete phases are separated into a set of rigid elements by a discrete unit method, each rigid element meets a motion equation according to a Newton second law, the motion equation of each rigid element is solved by a time-step iteration method, and then the overall motion form of a discontinuous body is obtained. The control equation is as follows:
in the formula, mi、Ii、viAnd ωiRepresenting the mass, moment of inertia, velocity and angular velocity of particle i, respectively. k is a radical ofiDenotes the number of particles which come into contact with the particles, TijRepresenting torque, fp-g,iAnd fcontact,ijRespectively representing the gas-solid interaction force and the contact force to which the particles are subjected.
S2 gas phase control equation
And (3) in the CFD-DEM, the gas is regarded as a continuous phase, and the solution is carried out according to a continuity equation and a momentum conservation equation by following a Navier-Stokes equation.
Continuity equation:
conservation of momentum equation:
where rhog、p、ugAnd τgRespectively representing the density, pressure, velocity and viscosity of the gas, g is the acceleration of gravity, Fg-pRepresents the particle-gas interaction force per unit volume, epsilongRefers to the void fraction.
When a CFD-DEM coupling method is used for solving, the material transferring process needs to be divided into a plurality of time step sets. In a certain time step, firstly, the Navier-Stokes equation in a given time step is solved iteratively by adopting algorithms such as SIMPLE and the like, and information such as flow field speed, pressure and the like is obtained. Then solving the gas-solid two-phase acting force and the acting force between particles, and calculating the position and the speed of the particles after a time step by integration. And updating the void ratio in the gas flow field grid according to the position information of the particles, calculating the average velocity of the particles in the grid and the momentum exchange quantity of the particles and the flow field, and updating the reaction source term of the particles on the flow field. And finally, correcting the two-phase coupled Navier-Stokes equation to obtain a new gas flow field, and entering the next time step.
S3, simulation model and parameter setting thereof
Fluent and EDEM are respectively currently commonly used computational fluid mechanics software and discrete element analysis software, and numerical simulation of a particle material transferring process is realized by a Fluent-EDEM coupling mode. The process of unloading the grab bucket into the active dust suppression hopper is taken as a specific research object, and the corresponding physical model is shown in fig. 1 to 3.
The following experiment uses an active dust suppression hopper with a material guide assembly and a common hopper without the material guide assembly for comparison, other parameters are consistent, the diameter of a first cavity of the common hopper is 3 meters, the height of the first cavity of the common hopper is 3 meters, the height of a second cavity of the common hopper is 1.2 meters, the included angle between the inner wall of the second cavity of the common hopper and the horizontal plane is 50 degrees, and the distance between the lowest point of the grab bucket and the opening plane of the common hopper is 1 m.
The diameter of the inner wall of the first cavity of the active dust suppression hopper is 3 meters, the height of the second cavity of the active dust suppression hopper is 1.2 meters, the included angle between the inner wall of the second cavity of the active dust suppression hopper and the horizontal plane is 50 degrees, each active dust suppression hopper comprises four guide plates 22, the thread pitch of each guide plate 22 is 5 meters, and the distance between the lowest point of the grab bucket and the opening plane of the active dust suppression hopper is 1 m.
The boundary conditions of the calculation domains of the material transferring model of the common hopper and the active dust suppression hopper are set as follows: the wall surface (wall) is set as a fixed non-slip wall surface; spherical coal particles are selected as specific research objects in the particle phase, and relevant parameter settings in the EDEM are shown in table 1.
TABLE 1 EDEM simulation parameter settings
S4, result analysis
Because the particle size of dust particles is greatly different from the size of a simulation model, the generation and diffusion process of transferring dust by a common hopper and an active dust suppression hopper is difficult to simulate directly. The generation of dust in the material transferring process is related to the movement speed of particles, the violence degree of the particle collision process and other factors; the dust has small particle size, is obviously influenced by the drag force of the airflow and is easy to diffuse along with the airflow. Therefore, the dust suppression mechanism and effect of the active dust suppression hopper are indirectly verified by comparing the dust generation and diffusion conditions of the common hopper and the active dust suppression hopper in two aspects of particle movement and flow field distribution.
Motion analysis during S5 feeding
In a common hopper, particles fall vertically after leaving a grab bucket, the speed is gradually increased, and the material flow becomes loose along with the increase of the falling distance; after colliding with the bottom of the common hopper, the speed of the particles is rapidly attenuated. In the active dust suppression hopper, particles firstly collide with the material guide plate 22 after leaving the grab bucket, the speed change range of the particles before and after the collision is small, after the particles collide with the material guide plate 22, the particle flow is divided into a plurality of strands of closely-packed material flows and slides down along the side wall of the hopper 1 on the material guide plate 22 at a low speed, and the particles slide down to the bottom of the hopper 1 along the conical surface of the hopper 1 after leaving the material guide plate 22. Compared with the motion forms of particles in a common hopper and an active dust suppression hopper, the motion speed of the particles in the active dust suppression hopper, the particle flow loosening degree and the particle speed change in the collision process are all smaller than those of the common hopper.
In order to compare the moving speed difference of the particle flow in the common hopper and the active dust suppression hopper more clearly, a plurality of particles are randomly tracked in the EDEM simulation result respectively and the moving speed information of the particles is obtained, as shown in FIG. 8. The y-coordinate in fig. 8 represents the position in the vertical direction, where the values of the general hopper and active dust suppression hopper opening plane positions are y-0. As can be seen in FIG. 8, after entering the hopper (y >0), the particle velocity in the conventional hopper is significantly greater than the particle velocity in the active dust suppression hopper; as the drop height increased, the particle velocity difference increased significantly, with a maximum velocity difference of about 5.4m/s and a drop amplitude of about 55%.
In order to more clearly reflect the speed change of the particle collision process, the particle movement speed in the time period before and after the collision is extracted from the EDEM. When falling down in the active dust suppression hopper, particles mainly collide with the hopper 1 twice, namely, the particles collide with the material guide plate 22 immediately after contacting with the material guide plate, and collide with the bottom of the hopper 1 after sliding out of the material guide plate 22, and the two collision processes are respectively distinguished by A, B; whereas the particles mainly collide with the hopper 1 only once while moving in the normal hopper. Particles are randomly tracked from the material transferring model of the ordinary hopper and the active dust suppression hopper and the speed change condition of the collision process is obtained, and the speed direction is positive downwards as shown in figure 9.
As can be seen from fig. 9, in the active dust suppression hopper, the particle movement speed is reduced significantly in both collision phases a and B; wherein the speed after collision is reduced by about 2.5m/s in the collision stage A, the speed after collision is reduced by about 3.2m/s in the collision stage B, and the speed of the particles is still downward after collision. In the common hopper, the speed change of the particles in the collision process is large, the speed of the particles before and after collision is changed from 9.9m/s to-1.5 m/s, the speed change amount reaches 11.4m/s, and the particles move upwards after collision. Therefore, the collision intensity of the particles with the hopper 1 in the material transferring process of the active dust suppression hopper is obviously weaker than that of the common hopper.
S6 analysis of distribution of air flow field in feeding process
And acquiring a flow field velocity cloud chart and a velocity flow chart of a certain symmetrical surface of the ordinary hopper material transferring model in a plurality of time periods in Fluent post-processing, as shown in figures 10 to 15, wherein black parts in the velocity flow chart represent particle flow. The generation of dust in the process of transferring bulk cargo mainly occurs in the falling and stacking stages of the bulk cargo. As can be seen from fig. 10 to 15, during the falling phase of the material, the particle flow moves downward while bringing the surrounding air downward, forming an induced air flow. When the induced airflow moves to the bottom of the hopper, the induced airflow is mixed with the dusty airflow generated in the accumulation stage, and under the action of space constraint, the dusty airflow returns back and moves upwards from the periphery of the common hopper, wherein one part of the airflow escapes from the periphery of the common hopper, and the other part of the airflow forms a vortex in the common hopper; after the material is piled up, the residual dusty airflow in the common hopper is gradually carried to the external space of the common hopper under the inertia effect of the flow field. Therefore, most of dust generated in the material transferring process of the common hopper can escape from the common hopper.
According to the characteristics of particle motion in the active dust suppression hopper, the material transferring process is divided into a blanking collision stage, a particle sliding stage and an accumulation stage. In the blanking collision stage shown in fig. 16 to 18, the induced airflow moves from top to bottom under the driving action of the material flow, returns back and flows upwards at the material guide plate 22 due to the space limitation, and forms a large vortex at the upper part of the hopper 1. The induced airflow in the vicinity of the material flow is a predominantly dusty airflow which escapes mainly from the periphery of the hopper 1, as can be seen from the airflow velocity flow diagram and the vector diagram. As shown in fig. 19 to 21, during the particle sliding stage, as the material flow slides down the guide plates 22, the induced air flow forms a vortex in the space between the upper and lower guide plates 22, and only a small amount of air flow escapes from the opening plane of the hopper 1. Combining the velocity cloud chart and the velocity vector chart, it can be known that there is a vortex in the semi-closed space formed between the material guiding plates 22, and the velocity of the upward moving air flow is relatively low, so that the dust carrying capacity is relatively weak. During the flowing process of the air flow, dust particles are easy to separate from the air flow under the action of centrifugal force and fall into the material flow or attach to the wall surface. Therefore, the dust generated in the sliding process mainly circles around the semi-closed space between the material guide plates 22 and is difficult to escape upwards. Fig. 22 to 24 show the stacking stage, in which the induced airflow is mainly active inside the hopper 1, the dust-containing vortex generated by the particle sliding stage still winds around the semi-closed space region between the guide plates 22, and a new vortex is formed in the bottom space of the hopper 1. As can be seen from the velocity cloud, there is a region of near zero velocity between the two vortices, indicating that the two vortices are almost independent of each other and that the dusty gas stream generated at the bottom of the hopper 1 does not escape upwards.
S7, conclusion
A CFD-DEM coupling method is applied, and the feeding process of a common hopper and an active dust suppression hopper is simulated, so that the following conclusion is obtained:
(1) by additionally arranging the spiral material guide plate 22, the particle flow moving vertically downwards in the feeding process of the active dust suppression hopper is divided into four strands of tightly-packed material flows moving spirally downwards, so that the total contact area between the particles and the surrounding air is reduced; the movement speed of the particle flow is reduced, and the maximum reduction amplitude of the particle speed is about 55 percent; in addition, the intensity of the collision process of the particles and the hopper 1 is weakened, the speed variation of the particle collision process in the common hopper is 11.4m/s, and the speed variation of the two collision processes in the active dust suppression hopper is respectively 2.5m/s and 3.2 m/s; active dust suppression hoppers suppress the generation of dust by improving the movement of particles.
(2) Dust generated in the material transferring process of the common hopper can escape out of the common hopper, and the active dust suppression hopper constructs a semi-closed space through the guide plate 22, so that the dust-containing airflow forms a vortex in the space at the middle lower part of the hopper 1, and the dust generated in the material transferring process is effectively inhibited from diffusing to the outside.
Example four:
as shown in fig. 5, the fourth embodiment is the same as the third embodiment and will not be described again, and the fourth embodiment is different from the third embodiment in that the hopper 1 is provided with a first cavity and a second cavity inwardly along the axial direction, and the hopper 1 may be in various shapes, for example, the hopper 1 may be a rectangular parallelepiped, a cylinder, or an assembly body composed of a plurality of parts.
Example five:
as shown in fig. 6, the fifth embodiment is the same as the third embodiment and will not be described again, and the fourth embodiment is different from the third embodiment in that the hopper 1 includes a first cylinder 11 and a second cylinder 12 coaxially connected in sequence, the first cylinder 11 is cylindrical, a cavity surrounded by the first cylinder 11 is a first cavity, the second cylinder 12 is a revolving body, the diameter of the second cylinder 12 decreases along a direction away from the first cylinder 11, and a cavity surrounded by the second cylinder 12 is a second cavity.
Preferably, the hopper 1 further comprises a third cylinder 13, the third cylinder 13 is cylindrical, the third cylinder 13 is connected to one end, away from the first cylinder 11, of the second cylinder 12, the third cylinder 13 is communicated with the second cylinder 12, and the valve 3 is arranged on the third cylinder 13, and preferably, the valve 3 is a self-operated pressure regulating valve.
More preferably, the first cylinder 11, the second cylinder 12, and the third cylinder 13 are integrally molded.
Example six:
as shown in fig. 7, the sixth embodiment is the same as the third embodiment and will not be described again, and the sixth embodiment is different from the third embodiment in that a plurality of dust suction holes are formed inward on the outer circumferential surface of the hopper 1, the dust suction holes are uniformly distributed along the circumferential direction of the hopper 1, and each dust suction hole is communicated with the inside of the hopper 1.
Preferably, the dust suction hole penetrates through the inner wall of the second cavity and is communicated with the second cavity.
The active dust suppression hopper further comprises a dust removal assembly 4, the dust removal assembly 4 comprises a dust remover 41 and a negative pressure fan 42, the air inlet end of the dust remover 41 is communicated with each dust suction hole, and the air inlet end of the negative pressure fan 42 is communicated with the air outlet end of the dust remover 41. Preferably, the dust collector 41 is a bag collector or a centrifugal collector.
Preferably, the dust removing assembly 4 further comprises a plurality of dust collecting branch pipes 43 and a dust collecting main pipe 44, the dust collecting branch pipes 43 are arranged in one-to-one correspondence with the dust collecting holes, and the air inlet ends of the dust collecting branch pipes 43 are communicated with the dust collecting holes; one end of the main dust suction pipe 44 is communicated with the air outlet end of each branch dust suction pipe 43, and the other end of the main dust suction pipe 44 is communicated with the air inlet end of the dust collector 41.
By arranging the dust suction branch pipe 43, the dust suction main pipe 44, the dust remover 41 and the negative pressure fan 42, part of dust generated in the hopper 1 can be extracted outwards, and the dust suppression effect of the active dust suppression hopper is further improved.
When the number of the hoppers 1 is one, the dust collector 41 and the negative pressure fan 42 are provided on the outer wall of the hopper 1.
When the number of the hoppers 1 is four, the dust remover 41 and the negative pressure fan 42 are disposed between the four hoppers 1, and the dust remover 41 and the negative pressure fan 42 are disposed on the outer wall of the hopper 1.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. An active dust suppression hopper, comprising:
at least one hopper;
at least one guide subassembly, the guide subassembly with the hopper one-to-one sets up, each the guide subassembly includes fixed axle, two at least stock guides, place in the fixed axle is coaxial the hopper, the stock guide is the spiral, the stock guide is followed place in the axial of fixed axle the hopper, and at least two the stock guide is followed the circumference evenly distributed of fixed axle, the inner edge of stock guide connect in fixed axle, outer fringe connect in the inner wall of hopper.
2. The active dust suppression hopper as claimed in claim 1, wherein each of the guide assemblies comprises four guide plates, and the four guide plates are uniformly distributed along the circumference of the fixed shaft.
3. The active dust suppression hopper of claim 1, wherein the number of hoppers is plural, and axes of the plural hoppers are parallel to each other and adjacent hoppers are connected to each other.
4. The active dust suppression hopper of claim 3, wherein the number of hoppers is four, and four hoppers are arranged in a rectangular pattern.
5. The active dust suppression hopper according to claim 1, wherein a plurality of dust suction holes are formed in an inward circumferential surface of the hopper, the dust suction holes are uniformly distributed along a circumferential direction of the hopper, and each dust suction hole is communicated with an interior of the hopper.
6. The active dust suppression hopper of claim 5, further comprising a dust removal assembly, wherein the dust removal assembly comprises a dust remover and a negative pressure fan, an air inlet end of the dust remover is communicated with each dust suction hole, and an air inlet end of the negative pressure fan is communicated with an air outlet end of the dust remover.
7. The active dust suppression hopper according to claim 6, wherein the dust removing assembly further comprises a plurality of dust suction branch pipes and a dust suction main pipe, the dust suction branch pipes are arranged in one-to-one correspondence with the dust suction holes, and air inlet ends of the dust suction branch pipes are communicated with the dust suction holes; one end of the main dust absorption pipe is communicated with the air outlet end of each branch dust absorption pipe, and the other end of the main dust absorption pipe is communicated with the air inlet end of the dust remover.
8. The active dust suppression hopper of claim 6, further comprising at least one valve disposed in one-to-one correspondence with the hopper, the valve being disposed at a discharge end of the hopper.
9. The active dust suppression hopper according to claim 1, wherein a first cavity and a second cavity are formed in the hopper, the first cavity is cylindrical, the second cavity is truncated cone-shaped, the second cavity is located below the first cavity, one end of the second cavity is communicated with the first cavity, and the inner diameter of the second cavity is gradually reduced in a direction away from the first cavity; the fixed shaft and the material guide plate are coaxially arranged in the first cavity.
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| CN201921681450.6U CN210794360U (en) | 2019-10-09 | 2019-10-09 | Active dust suppression hopper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110577029A (en) * | 2019-10-09 | 2019-12-17 | 武汉开锐海洋起重技术有限公司 | Active dust suppression hopper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110577029A (en) * | 2019-10-09 | 2019-12-17 | 武汉开锐海洋起重技术有限公司 | Active dust suppression hopper |
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