CN113894936A - Device of preventing educing in rubble mix station is stabilized to cement - Google Patents
Device of preventing educing in rubble mix station is stabilized to cement Download PDFInfo
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- CN113894936A CN113894936A CN202111297475.8A CN202111297475A CN113894936A CN 113894936 A CN113894936 A CN 113894936A CN 202111297475 A CN202111297475 A CN 202111297475A CN 113894936 A CN113894936 A CN 113894936A
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- temporary storage
- pipe
- storage bin
- guide cylinder
- cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
- B28C7/0076—Parts or details thereof, e.g. opening, closing or unloading means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention relates to a segregation-preventing device for a cement stabilized macadam mixing station, which effectively solves the problem that the road paving quality is affected because segregation phenomenon is easy to occur in the mixing production process of the conventional cement stabilized macadam; the technical scheme comprises the following steps: the device can realize that the material that will carry to in the temporary storage storehouse through the conveyer belt evenly lays in the temporary storage storehouse, can be better avoid the material to pile up into the toper slope in the temporary storage storehouse and then avoided the emergence of segregation phenomenon, but also can realize adjusting the position height of temporary storage storehouse for the conveyer belt in step for the whereabouts distance of material in the air remains a invariable scope throughout.
Description
Technical Field
The invention belongs to the technical field of water-stable gravel mixing, and particularly relates to an anti-segregation device for a cement-stable gravel mixing station.
Background
Sufficient cement and water are added into the crushed stones with a certain gradation, and after the mixture obtained by mixing is compacted and maintained, when the strength of the mixture meets the specified requirement, the mixture is called cement-stabilized crushed stones which have good plate body property and better water stability and frost resistance than lime-stabilized soil and are widely applied to road construction;
because the cement stabilized macadam is mixed with graded macadams with different particle sizes, segregation conditions (the phenomenon of uneven internal composition and structure caused by mutual separation of aggregates with different particle sizes) are easily generated in the mixing process, and then the aggregate segregation which causes a large amount of phenomena exists in the later paving process is further caused, because the cement stabilized macadam is mainly used for paving a road base layer, if the aggregate segregation conditions which cause a large amount of phenomena exist in the structure of the road base layer after paving, the construction quality of a road surface is greatly influenced;
under the normal condition, cement stabilized macadam is mixed at a mixing station, the mixed materials are conveyed to a temporary storage bin from a storage bin through a conveying belt, when a vehicle transports the materials, the materials stored in the temporary storage bin are dumped into a transport vehicle, and the cement stabilized macadam is transported, but when the conveying belt transports the materials to the temporary storage bin, aggregates with coarse grain diameters fall into one side, far away from the conveying belt, of the temporary storage bin due to inertia, aggregates with fine grain diameters fall into one side, close to the conveying belt, of the temporary storage bin (so that aggregates with different grain diameters are stacked at different positions in the temporary storage bin), and then aggregate segregation phenomenon is generated, and the materials entering the temporary storage bin along with the conveying of the conveying belt can be stacked into a conical slope, and the segregation condition is further aggravated;
this scheme provides a rubble mixing station prevents segregation device is used for solving above-mentioned problem in cement stabilization.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides the anti-segregation device for the cement stabilized macadam mixing station, which can uniformly lay the materials conveyed into the temporary storage bin by the conveying belt in the temporary storage bin, can better avoid the materials from accumulating into a conical slope in the temporary storage bin so as to avoid the segregation phenomenon, and can synchronously realize the adjustment of the position height of the temporary storage bin relative to the conveying belt so that the falling distance of the materials in the air is always kept in a constant range.
The anti-segregation device for the cement stabilized macadam mixing station comprises a frame body and is characterized in that a guide cylinder is fixed at the central position of the frame body, a temporary storage bin matched with the guide cylinder is vertically slid on the frame body, an expansion spring is connected between the temporary storage bin and the frame body, a bulk material pipe communicated with the guide cylinder is rotatably installed at the bottom of the guide cylinder, the bulk material pipe is connected with a transmission device arranged on the side wall of the guide cylinder, two resistance rollers are arranged in the guide cylinder above the bulk material pipe at intervals, and the resistance rollers are rotatably installed with the guide cylinder in a matched manner;
the resistance roller is connected with the transmission device and the resistance roller and the transmission device are matched to meet the following conditions: when materials pass through the resistance roller from top to bottom, the resistance roller is driven to rotate, and the bulk material pipe is driven to complete one-time reciprocating swing through the transmission device by one-circle rotation of the resistance roller;
be equipped with controlling means and this controlling means and resistance roll on the support body are connected, controlling means satisfies with the resistance roll cooperation: and after the resistance roller rotates for N circles, the control device controls the temporary storage bin to move downwards for a certain distance.
The beneficial effects of the technical scheme are as follows:
(1) in the scheme, the action of free falling of the materials is matched with the two resistance rollers, so that the bulk material pipe can be driven to be incapable of swinging in the temporary storage bin, the materials are uniformly scattered in the temporary storage bin, and the segregation phenomenon caused by the materials accumulating into a conical slope in the temporary storage bin is better avoided;
(2) the materials act on the two resistance rollers in the falling process and drive the bulk material pipe to swing in a reciprocating manner, and meanwhile, partial kinetic energy of the materials in the falling process is consumed, so that the falling speed of the materials is reduced to a certain extent, the materials fall into the temporary storage bin at a slow speed, and the aggregate segregation phenomenon is weakened in a passive manner;
(3) in the scheme, along with the process of dumping the materials into the temporary storage bin, the position height of the temporary storage bin relative to the conveying belt can be synchronously adjusted, namely, the materials fall into the temporary storage bin from the tail end of the conveying belt to the last, the falling distance of the materials in the air is always kept in a constant and relatively small range in the process, the free falling distance of the materials in the air is always in a set range, the falling time of the materials in the air is further reduced (the speed of the materials falling into the temporary storage bin is reduced), and the aggregate segregation phenomenon is weakened in an active mode.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of a material guiding cylinder according to the present invention;
FIG. 3 is a schematic view of the relationship between two resistance rollers according to the present invention;
FIG. 4 is a schematic view of the installation of the bulk tube and the tubular tube according to the present invention;
FIG. 5 is a schematic cross-sectional view of a cylindrical tube of the present invention;
FIG. 6 is a schematic structural view of the present invention with the bulk material pipe removed;
FIG. 7 is a schematic view of a bulk material tube structure according to the present invention;
FIG. 8 is a schematic view of the matching relationship between the temporary storage bin and the rack body according to the present invention;
FIG. 9 is a schematic view showing the connection relationship between the cylindrical body and the U-shaped tube according to the present invention;
FIG. 10 is an enlarged view of the structure at A of the present invention;
FIG. 11 is an enlarged view of the structure at B of the present invention;
FIG. 12 is an enlarged view of the structure at position C of the present invention;
FIG. 13 is a schematic view showing the fitting relationship of the valve ball, the U-shaped tube and the auxiliary tube according to the present invention;
FIG. 14 is a schematic view of the engagement between the driving plunger and the spiral groove of the present invention;
fig. 15 is a schematic view showing several states of the valve ball when the auxiliary tube is blocked according to the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be described in detail with reference to the accompanying drawings 1 to 15.
Embodiment 1, a rubble mix station prevents segregation device is stabilized to cement, as shown in figure 1, including support body 1, the improvement part of this scheme lies in: a material guide cylinder 2 is fixedly arranged at the central position of a frame body 1, a temporary storage bin 3 matched with the material guide cylinder 2 is vertically and slidably arranged on the frame body 1, the position relation between the tail end position of the material guide cylinder 2 and the bottom wall of the temporary storage bin 3 is shown in figure 2 at the beginning (the tail end outlet position of the material guide cylinder 2 is at a certain distance from the bottom wall of the temporary storage bin 3, at the moment, the two are close to each other), and the temporary storage bin 3 is at the highest position, as shown in figure 4, a material dispersing pipe 5 is rotatably arranged at the bottom of the material guide cylinder 2, two resistance rollers 6 rotatably arranged with the material guide cylinder 2 are arranged in the material guide cylinder 2 above the material dispersing pipe 5 at intervals (the resistance rollers 6 structurally comprise a rotating shaft rotatably arranged with the material guide cylinder 2, a plurality of resistance plates are arranged on the rotating shaft at equal intervals along the radial direction of the rotating shaft, the two resistance rollers 6 are not interfered with each other when rotating, and the rotating shaft and the resistance plates are not labeled in the figure, the resistance roller 6 should be made of a material with a lighter material and a higher hardness), as shown in fig. 3 (which is a schematic diagram of a matching relationship between the conveyor belt and the upper end of the guide cylinder 2 in the present embodiment), when the mixed cement-stabilized macadam is dumped from the storage bin and conveyed by the conveyor belt, the cement-stabilized macadam at the tail end of the conveyor belt enters the guide cylinder 2 under the throwing action of the conveyor belt and slides down along the inner wall of the guide cylinder 2, while the aggregate with a larger particle size moves to a position far away from the tail end of the conveyor belt under the throwing action of the conveyor belt due to inertia with a larger kinetic energy (larger than the aggregate with a smaller particle size), but due to the limitation of the inner wall of the guide cylinder 2, the aggregate can only slide down along the inner wall of the guide cylinder 2 (thereby primarily reducing the segregation phenomenon between aggregates with different particle sizes);
as shown in fig. 3, when the material falls in the material guiding cylinder 2 and falls to the two resistance rollers 6, the material is limited by the inner wall of the material guiding cylinder 2 and then slides down to the resistance rollers 6 (i.e. the material slides down to the resistance plate), and under the action of the kinetic energy of the free falling of the material, the effect of driving the two resistance rollers 6 to rotate is achieved (i.e. the two resistance rollers 6 rotate in opposite directions and rotate in directions facing each other), and along with the rotation of the resistance rollers 6, the resistance strand swings through the bulk material pipe 5 connected with the resistance rollers and arranged on the side wall of the material guiding cylinder 2 to drive the bulk material pipe 5 rotatably arranged at the bottom of the material guiding cylinder 2 to swing;
assuming that the bulk material pipe 5 is at the position shown in the attached drawing 2 initially, the material firstly conveyed to the material guiding cylinder 2 by the conveyer belt is firstly dumped to the left end of the temporary storage bin 3 under the action of the bulk material pipe 5, and is continuously conveyed into the material guiding cylinder 2 by the conveyer belt along with the material, so as to drive the two resistance rollers 6 to continuously rotate (the rotating speed of the two resistance rollers 6 depends on the amount of the material conveyed into the material guiding cylinder 2 by the conveyer belt in unit time), and along with the rotation of the two resistance rollers 6, the bulk material pipe 5 is driven to swing in the temporary storage bin 3 by the transmission device, that is, the bulk material pipe 5 is driven to rotate along the counterclockwise direction from the position shown in the attached drawing 2, so that when the resistance rollers 6 rotate for half a circle, the bulk material pipe 5 is driven to rotate along the counterclockwise direction to the maximum angle, and then along with the continuous rotation of the resistance rollers 6, the bulk material pipe 5 is driven to rotate along the clockwise direction as shown in the attached drawing 2, when the resistance roller 6 rotates for one circle, the bulk material pipe 5 is driven to rotate to the initial position again, as shown in the position shown in the attached drawing 2, namely, the resistance roller 6 rotates for one circle, the bulk material strand Anu is driven to complete one-time reciprocating swing, and in the process of reciprocating swing of the bulk material pipe 5, the materials which are inclined from the material guide cylinder 2 are uniformly thrown onto the bottom wall of the temporary storage bin 3, so that the phenomenon that the materials are easily formed into a tapered slope in the temporary storage bin 3 because the traditional materials entering the temporary storage bin 3 from the tail end of a conveying belt usually concentrate on a certain position in the temporary storage bin 3, and then the segregation of the materials is aggravated (aggregates with different particle sizes slide along the slope at different distances, and then the segregation of aggregates with different particle sizes is more obvious);
note: when the materials are conveyed into the material guide cylinder 2 through the tail end of the conveying belt and fall in the material guide cylinder 2, when the materials act on the resistance roller 6 and drive the resistance roller 6 to rotate, part of kinetic energy of the materials in the falling process is consumed (namely, part of the kinetic energy of the materials in the falling process drives the resistance roller 6 to rotate and finally enables the material dispersing pipe 5 to swing back and forth, so that the materials are uniformly thrown into the temporary storage bin 3), the falling speed of the final materials is obviously reduced due to the consumption of part of the kinetic energy of the falling materials, so that the kinetic energy of the aggregates with different particle sizes when the aggregates with different particle sizes are in contact with the bottom wall of the temporary storage bin 3 is further reduced, and the segregation phenomenon among the aggregates with different particle sizes is weakened (when the materials are thrown onto the bottom wall of the temporary storage bin 3 or the stacked materials, the kinetic energy cannot exist, further ensuring that the materials can stably fall on the bottom wall of the temporary storage bin 3 or the accumulated materials) so that the materials cannot jump too much;
although the material is thrown into the temporary storage bin 3 in a reciprocating swing mode by the material scattering tube 5, the materials which are thrown into the temporary storage bin 3 and are stacked together inevitably generate a slight slope (the upper end surface of the materials stacked in the temporary storage bin 3 cannot be completely a complete plane), because part of kinetic energy of the falling materials is consumed by the two resistance rollers 6 (the resistance rollers 6 drive the material scattering tube 5 to swing), the final falling speed of the materials is further reduced at the moment, even if a little of the materials are thrown onto the inclined plane, the materials cannot generate large separation and segregation (because the falling speed is reduced, the kinetic energy difference between the aggregates with large particle size and the aggregates with small particle size is small, the aggregates slide along the inclined plane and keep a relatively synchronous process);
as shown in fig. 8, along with the material entering the temporary storage bin 3 through the material guiding cylinder 2, the weight of the temporary storage bin 3 is increased continuously, preferably, a control device is arranged on the frame body 1 and connected with the resistance roller 6, and the control device and the resistance roller 6 are matched to meet the following requirements: after the resistance roller 6 rotates for N circles, the control device controls the temporary storage bin 3 to move downwards for a certain distance, as shown in figure 2, because the bulk material pipe 5 is close to the bottom of the temporary storage bin 3 at the beginning (in order to reduce the distance of free falling of the material in the air and further reduce the speed of final falling of the material and avoid aggravating segregation phenomenon), at this time, in the process of dumping the material into the temporary storage bin 3, the temporary storage bin 3 needs to be continuously moved downwards so as to avoid that the bulk material pipe 5 is submerged (can not be discharged) by the material accumulated in the temporary storage bin 3, therefore, after the resistance roller 6 rotates for N circles (every time a certain amount of material is thrown into the temporary storage bin 3), the control device controls the temporary storage bin 3 to move downwards for a certain distance, so that the distance between the upper end surface of the material accumulated in the temporary storage bin 3 and the bulk material pipe 5 (as shown in figure 2) is always kept constant and in a required range (a small fluctuation is allowed in a certain range), under the condition of meeting the minimum falling distance of the materials, the temporary storage bin 3 is enabled to move downwards for a certain distance at corresponding time intervals;
note: if a control device is not arranged, the temporary storage bin 3 is connected with the frame body 1 through the telescopic spring 4, and the telescopic spring 4 is continuously compressed by the temporary storage bin 3 under the action of natural gravity, so that the temporary storage bin moves downwards, and the deformation of the telescopic spring 4 has certain uncertainty (in the scheme, if a spring with a larger elastic coefficient is selected, the distance for the temporary storage bin 3 to move downwards is smaller and not obvious along with the increase of materials in the temporary storage bin 3, so that the requirement of the scheme cannot be met, and if a spring with a smaller elastic coefficient is selected, the spring with a smaller elastic coefficient is used, so that the spring with a larger elastic coefficient can move downwards when less materials are accumulated in the temporary storage bin 3, and the requirement of the scheme cannot be met);
even if the elastic coefficient of the selected spring is proper, the temporary storage bin is in a downward moving state all the time in the vertical direction (namely, the weight of the temporary storage bin is increased along with the toppling of the material, the spring is compressed, and the temporary storage bin is in the downward moving state all the time), the distance between the tail end of the conveying belt and the upper end surface of the material accumulated in the temporary storage bin (namely, the sliding distance of the material in the air) cannot be ensured to be in a constant and proper range all the time in the dynamic process (because the deformation of the spring is very small when the spring is compressed to a certain degree), and because the temporary storage bin is in elastic connection with the rack body, when the material is toppled into the temporary storage bin continuously, the temporary storage bin is not limited in the vertical direction, so the temporary storage bin can jump to a certain degree in the vertical direction under the impact of the material, and the segregation phenomenon of the material can be aggravated;
that is, if only the mode that the telescopic spring 4 is matched with the temporary storage bin 3 is adopted, the effect that the free falling distance of the materials in the air is always kept constant and in a required range (minimum sliding distance) in the scheme cannot be realized;
that is, when the control device is used to control the temporary storage bin 3 (the temporary storage bin is made of a light-weight and high-strength composite material) to move downwards, the expansion spring 4 connected between the temporary storage bin 3 and the frame 1 should be a spring with a small elastic coefficient (the movement of the temporary storage bin 3 is controlled by the control device), as long as the expansion spring 4 can drive the temporary storage bin 3 to move upwards to the initial position when the temporary storage bin 3 finishes dumping (dumping to a transfer vehicle is finished) (the elastic resistance of the expansion spring 4 to the temporary storage bin 3 in the falling process of the temporary storage bin 3 is ignored), after the temporary storage bin 3 finishes dumping, the control device can not control the movement of the temporary storage bin 3 by operating personnel, at the moment, the temporary storage bin 3 moves upwards to the initial position (resetting is finished) under the action of the compressed expansion spring 4, the bottom wall of the temporary storage bin 3 in the scheme is provided with a movably-openable bottom plate (not shown in the figure), when the temporary storage bin is full of cement stabilized macadam and dumps towards the transfer trolley, the staff control the bottom plate to open.
as shown in fig. 6, an accommodating chamber 35 is arranged in the cylindrical tube 7, as shown in fig. 4, the bulk material tube 5 comprises an arc-shaped plate 9 rotatably mounted in the accommodating chamber 35 (the arc-shaped plate 9 and the cylindrical tube 7 are coaxially and rotatably mounted), the arc-shaped plate 9 is integrally connected with a rectangular tube 10, as shown in fig. 7, the bulk material tube 5 is of a structure that the material entering the cylindrical tube 7 just enters the rectangular tube 10 through an opening 8 by matching the arc-shaped plate 9 and the accommodating chamber 35, and is finally thrown into the temporary storage bin 3;
Embodiment 4, on the basis of embodiment 1, as shown in fig. 2, a cylinder 16 is fixedly mounted on a frame body 1, as shown in fig. 9, a valve plate 17 is vertically slidably mounted in the cylinder 16, the valve plate 17 is integrally connected with a valve rod 18, one end of the valve rod 18, which extends out of the valve cylinder, is fixedly mounted with a temporary storage bin 3, upper and lower ends of the cylinder 16 are respectively communicated through a U-shaped tube 19, liquid media (such as hydraulic oil, lubricating oil and the like) are filled in the cylinder 16 and the U-shaped tube 19, and sealing rubber rings are respectively arranged at a sliding fit part of the valve rod 18 and the cylinder 16 and at a sliding fit part of the valve plate 17 and an inner wall of the cylinder 16, so as to ensure sealing performance;
when the temporary storage bin 3 is not initially stored with materials, the temporary storage bin 3 is at the highest position (at this time, the weight of the expansion spring 4 is balanced with that of the temporary storage bin 3) and the valve plate 17 is also at the highest position in the cylinder 16, as shown in fig. 9, the space in which the cylinder 16 and the U-shaped tube 19 are communicated is divided into two parts by the valve plate 17, as shown in fig. 9, a control valve is arranged at the communication part of the U-shaped tube 19 and the upper end of the cylinder 16 and can control the circulation of the liquid medium (when the control valve is closed, the liquid medium cannot flow, and when the control valve is opened, the liquid medium can flow), initially, the control valve is in a closed state and along with the increase of the materials in the temporary storage bin 3, so that the temporary storage bin 3 has a downward moving tendency, after the resistance roller 6 rotates for N circles, the resistance roller 6 drives the control valve to rotate for a certain angle and makes the control valve in a conducting state, at this time, under the action of the gravity of the materials in the temporary storage bin 3, the temporary storage bin 3 is forced to move downwards (and the expansion spring 4 is compressed), namely, the valve plate 17 is enabled to move downwards along the cylinder 16 (the distance between the material dispersing pipe 5 and the upper end surface of the material accumulated in the temporary storage bin 3 is adjusted to avoid the material dispersing pipe 5 from being submerged by the material accumulated in the temporary storage bin 3), so that the liquid medium in the cylinder 16 and the U-shaped pipe 19 flows;
when the control valve is in a conducting state, the temporary storage bin 3 moves downwards, and after the resistance roller 6 continues to rotate by a corresponding angle, the control valve is driven to rotate again and is in a closed state, at the moment, the liquid medium cannot continue to flow in the cylinder 16 and the U-shaped pipe 19, so that the temporary storage bin 3 cannot continue to move downwards, and when the control valve is not in a conducting state, the temporary storage bin 3 is kept still;
note: in the process that the temporary storage bin 3 moves downwards, the materials are uninterruptedly thrown into the temporary storage bin 3 through the bulk material pipe 5 (in the falling process of the temporary storage bin 3, the gliding distance of the materials in the air is smaller than that of the temporary storage bin 3 when the materials are kept still), because when the temporary storage bin 3 starts to move downwards, the distance from the bottom of the bulk material pipe 5 to the upper end face of the materials stacked in the temporary storage bin 3 is already small.
when the control valve is in the non-conducting state, assuming that the valve ball 21 is at the position shown in the left drawing of fig. 15, the angle between the channel 22 and the vertical direction is 45 ° and the control valve is not conducting, when the resistance roller 6 rotates once (the material scattering pipe 5 completes one reciprocating swing to scatter the material), the grooved wheel 36 rotates 360 ° M minutes and the valve ball 21 is at the position shown in the middle drawing of fig. 15 (the control valve is still in the non-conducting state), and the resistance roller 6 rotates once, the grooved wheel 36 rotates 360 ° M minutes again and the valve ball 21 is at the position shown in the right drawing of fig. 15 (the control valve is still in the non-conducting state), in the above process, the temporary storage 3 position is always kept still (the material scattering pipe 5 undergoes two complete reciprocating swings and throws a certain amount of the material into the temporary storage 3, the bottom of the material dispersing pipe 5 is close to the upper end surface of the material accumulated in the temporary storage bin 3), and with one continuous rotation of the resistance roller 6, the grooved wheel 36 continues to rotate 360 degrees by M minutes, so that the valve ball 21 rotates 45 degrees and is in the state shown in fig. 11 (at this time, the control valve is in a conducting state and the liquid medium can flow in the cylinder 16 and the U-shaped pipe 19), at this time, the temporary storage bin 3 drives the valve plate 17 to move downwards in the cylinder 16 under the action of gravity and the liquid medium flows in the cylinder 16 and the U-shaped pipe 19, so that after one continuous rotation of the resistance roller 6, the grooved wheel 36 is driven to rotate 360 degrees by M minutes and the floating ball is in the position shown in the left figure in fig. 15 (the control valve is closed), the temporary storage bin 3 stops falling (at this time, the bottom of the material dispersing pipe 5 is a certain distance from the upper end surface of the material accumulated in the temporary storage bin 3 and the distance is within the required range), in the following process, the material continues to be thrown into the holding bin 3, which remains stationary, and the process described above is repeated (not described here too much);
that is, by way of example, it is known that: the time for the temporary storage bin 3 to move downwards is the time for the resistance roller 6 to rotate for one circle, and the time for the temporary storage bin 3 to remain motionless is the time for the resistance roller 6 to rotate for 2 circles, so that the temporary storage bin 3 moves downwards at intervals and the distance is in a controllable range, and the distance for the temporary storage bin 3 to move downwards satisfies the following conditions: the materials scattered at the bottom of the bulk material pipe 5 can be uniformly paved on the upper end surface of the materials stacked in the temporary storage bin 3, and finally the gliding distance of the materials scattered at the tail end of the conveying belt in the air is always in a constant, controllable and smaller range (such as the distance h shown in the attached figure 2);
compared with the traditional mode that the position of the temporary storage bin 3 is kept still and the distance between the position of the material thrown at the tail end of the conveying belt and the temporary storage bin 3 is a fixed value, the falling distance of the material in the air is always in a controllable, constant and smaller range in the whole throwing process of the material into the temporary storage bin 3, and the falling time of the material under control is reduced as much as possible, so that the speed of the material when the material is thrown into the temporary storage bin 3 is further reduced, and the segregation phenomenon among aggregates with different particle sizes is greatly reduced;
note: as shown in fig. 12, by adopting worm and gear transmission and utilizing the one-way transmission principle, when the grooved wheel 36 is not rotated, under the action of the control worm wheel 23 and the control worm 24, even if the valve ball 21 rotatably mounted in the U-shaped tube 19 is subjected to a certain degree of extrusion force from the liquid medium, the valve ball 21 is not rotated, and only when the grooved wheel 36 drives the control worm 24 to rotate, the valve ball 21 can be rotated;
as shown in fig. 8, a stopper (not numbered in the figure) is disposed at a vertical sliding position between the temporary storage bin 3 and the frame 1, and a trigger switch (electrically connected to the microcontroller and controlling the operation of the conveyor belt and the storage bin) is disposed at a position on the frame 1 equal to the stopper in height, when the temporary storage bin moves down to touch the stopper, the trigger switch triggers and the microcontroller controls the conveyor belt to stop working (the storage bin stops discharging), i.e., the conveyor belt stops continuously conveying into the temporary storage bin 3, and at this time, the control valve may be in a conducting state or a non-conducting state, and at this time, a worker needs to manually control the rotation of the sheave (or with the aid of other electric auxiliary tools, a marking line parallel to the passage 22 may be disposed on the control worm wheel 23 coaxially rotating with the valve ball 21, so as to help the worker to judge the conducting state of the valve ball at this time) and further realize the rotation of the valve ball so as to realize the non-conducting state of the control valve (ensuring that the temporary storage bin is in a subsequent state The unloading process can not move upwards along with the reduction of the weight of the material, so that the falling distance of the material is increased, the material is separated, after the material is unloaded, a worker controls the valve ball to rotate and enables the control valve to be in a conducting state, and at the moment, the temporary storage bin moves upwards under the action of the telescopic spring and completes resetting.
Example 6, on the basis of example 5, as shown in fig. 9, a transition pipe 25 with a diameter smaller than the inner diameter of the U-shaped pipe 19 is integrally arranged at a communication part between the lower end of the U-shaped pipe 19 and the cylinder 16, as shown in fig. 10, an auxiliary ball 26 (the diameter of the auxiliary ball 26 is larger than the inner diameter of the auxiliary pipe 20 and smaller than the inner diameter of the U-shaped pipe 19) is slidably mounted in the U-shaped pipe 19, an auxiliary spring 28 is connected between the auxiliary ball 26 and the inner wall of the U-shaped pipe 19, the auxiliary ball 26 abuts against the communication part between the transition pipe 25 and the U-shaped pipe 19 under the action of the auxiliary spring 28, a through hole 27 extending vertically is formed in the auxiliary ball 26, when the temporary storage bin 3 moves downwards, that is, the valve plate 17 moves downwards in the cylinder 16, as shown in fig. 9, the liquid medium in the cylinder 16 is forced to flow into the U-shaped pipe 19 through the bottom of the cylinder 16 and the liquid medium at the upper end of the U-shaped pipe 19 enters the cylinder 16 (forms a closed loop), in this process, the direction of the flow of the liquid medium in the vertically extending part of the U-shaped tube 19 is from bottom to top, so that the liquid medium is circulated through the through holes 27 in the transition ball;
when the materials in the temporary storage bin 3 are dumped to the transfer trolley and the temporary storage bin 3 moves upwards along the frame body 1 under the action of the extension spring 4, at this time, the flowing direction of the liquid medium in the U-shaped tube 19 is from top to bottom, so at this time, the liquid medium flowing from top to bottom will act on the contact part between the auxiliary ball 26 and the transition tube 25 and force the transition ball to move downward (so that the auxiliary spring 28 is compressed), at this time, the liquid medium not only flows through the through hole 27 arranged in the auxiliary ball 26, but also flows through the gap between the outer wall of the auxiliary ball 26 and the inner wall of the U-shaped tube 19 (which is equivalent to increasing the cross-sectional area when the liquid medium flows), namely, the flow resistance of the liquid medium in the U-shaped pipe 19 is greatly reduced, which is beneficial for the temporary storage bin 3 to rapidly move up to the initial position (complete reset) under the action of the extension spring 4, thereby improving and guaranteeing the next material filling;
when the temporary storage 3 moves up to the initial position, in which the liquid medium no longer flows, the auxiliary ball 26 moves to the initial position again under the action of the auxiliary spring 28, as shown in fig. 10.
Example 7, based on example 1, as shown in fig. 2, a plurality of guide plates 29 rotatably mounted to the inner wall of the guide cylinder 2 are vertically and alternately arranged in the guide cylinder 2 above the resistance roller 6 at intervals (initially, a plurality of guide plates 29 are arranged at a certain included angle with the inner wall of the guide cylinder 2), as shown in fig. 2, aggregates with different particle sizes that are thrown into the guide cylinder 2 through the end of the conveyor belt have slightly different trajectories during the falling process (the trajectory of the aggregate with a larger particle size is farther away from the end of the conveyor belt than the trajectory of the aggregate with a smaller particle size), at this time, the aggregate with a larger particle size is thrown to the position of the guide plate 29 close to the side wall of the guide cylinder 2, while the aggregate with a smaller particle size is thrown to the position of the guide plate 29 far away from the side wall of the guide cylinder 2, when the aggregate slides from the uppermost guide plate 29 to the second guide plate 29, the aggregate with a smaller particle size is thrown to the position of the second guide plate 29 far away from the side wall of the guide cylinder 2, the large-particle-size aggregate can be smashed and fall on the position, close to the side wall of the material guide cylinder 2, of the second material guide plate 29, the process is repeated, the phenomenon that the aggregate separation is caused due to the fact that the sliding track of the large-particle-size aggregate is large and the sliding track of the small-particle-size aggregate is small is further weakened, and the materials are guided by the plurality of material guide plates 29 in the falling process, so that the effects of mixing and decelerating the materials to a certain degree are achieved (the separation phenomenon in the falling process is further weakened);
as shown in fig. 8, a material guiding worm wheel 30 which rotates coaxially with the material guiding plate 29 is arranged on the side wall of the material guiding cylinder 2, and a plurality of material guiding worm wheels 30 which are positioned on the same side are matched with a material guiding worm 31 together, the material guiding worm 31 is connected with a transmission rod 32 which is rotatably installed on the frame body 1 through belt transmission, a spiral groove 33 is arranged on the transmission rod 32, as shown in fig. 14, a driving plunger 34 which is matched with the spiral groove 33 is fixed on the temporary storage bin 3, when the temporary storage bin 3 moves downwards, the driving plunger 34 is matched with the spiral groove 33, the transmission rod 32 is synchronously driven to rotate, along with the rotation of the transmission rod 32, a plurality of material guiding plates 29 are synchronously driven to rotate, so as to adjust the included angle between the material guiding plate 29 and the vertical direction, in the scheme, when the temporary storage bin 3 moves downwards for a certain distance, the material guiding plates 29 can be driven to rotate for a certain angle towards the direction of reducing the vertical included angle, the falling process of the material in the guide cylinder 2 is smoother, that is, the falling speed of the material in the guide cylinder 2 is increased (the blocking degree of the guide plates 29 to the falling material is reduced, and the material is converted from the original guiding and sliding down between the guide plates 29 into the vertical sliding down), so that the falling speed of the material in the guide cylinder 2 is increased along with the downward movement of the temporary storage bin 3, in order to make the torque acting on the resistance roller 6 larger when the material acts on the resistance roller 6 at a higher speed, and further to drive the resistance roller 6 to rotate with a larger torque, because the rotating torque required for driving the valve ball 21 to rotate in the U-shaped tube 19 is larger along with the downward movement (the weight of the temporary storage bin 3 is continuously increased), so that the scheme can work stably and reliably, therefore, the angle of the material guide plate 29 is adaptively adjusted according to the downward moving distance of the temporary storage bin 3;
because the material guiding worm wheel 30 and the material guiding worm 31 are used for driving, when the transmission rod 32 does not rotate, the material guiding plate 29 does not rotate when being impacted by the materials under the action of the material guiding worm 31 and the material guiding worm wheel 30 in one-way transmission.
s1: broken stones enter the material guide cylinder 2 through the conveying belt and the top of the material guide cylinder 2, and in the falling process, the broken stones drive the resistance roller 6 to rotate and drive the bulk material pipe 5 which is rotatably arranged at the bottom of the material guide cylinder 2 to do reciprocating swing through the resistance roller 6, so that the broken stones are uniformly dumped into the temporary storage bin 3;
s2: along with the rotation of the resistance roller 6, when the resistance roller 6 rotates for N circles, the temporary storage bin 3 is controlled to move downwards for a certain distance through the control device, and the falling height of the crushed stones coming out of the bulk material pipe 5 is ensured to be in a constant and proper range;
s3: every time the temporary storage bin 3 moves down for a certain distance, so that the included angle between the guide plate 29 which is rotatably arranged in the guide cylinder 2 and the vertical direction is reduced by a corresponding angle, the falling of the material in the guide cylinder 2 is smoother, and the falling speed of the material is increased to a certain extent, so that a larger rotating torque can be applied to the resistance roller 6 when the material acts on the resistance roller 6, the resistance roller 6 can easily drive the valve ball 21 to rotate in the U-shaped pipe 13, and the effect of guiding or closing the control valve is realized.
The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.
Claims (8)
1. The anti-segregation device for the cement stabilized macadam mixing station comprises a frame body (1) and is characterized in that a guide cylinder (2) is fixed at the center of the frame body (1), a temporary storage bin (3) matched with the guide cylinder (2) is vertically arranged on the frame body (1) in a sliding mode, an expansion spring (4) is connected between the temporary storage bin (3) and the frame body (1), a bulk material pipe (5) communicated with the guide cylinder (2) is rotatably arranged at the bottom of the guide cylinder (2), the bulk material pipe (5) is connected with a transmission device arranged on the side wall of the guide cylinder (2), two resistance rollers (6) are arranged in the guide cylinder (2) above the bulk material pipe (5) at intervals, and the resistance rollers (6) are rotatably matched with the guide cylinder (2);
the resistance roller (6) is connected with the transmission device and the resistance roller and the transmission device are matched to meet the following conditions: when materials pass through the resistance roller (6) from top to bottom, the resistance roller (6) is driven to rotate, and the resistance roller (6) rotates for a circle to drive the material scattering pipe (5) to complete one-time reciprocating swing through the transmission device;
be equipped with controlling means and this controlling means and resistance roller (6) on support body (1) and be connected, controlling means satisfies with the cooperation of resistance roller (6): and after the resistance roller (6) rotates for N circles, the control device controls the temporary storage bin (3) to move downwards for a certain distance.
2. The cement stabilized macadam mixing station segregation preventing device as claimed in claim 1, wherein the upper end of the guide cylinder (2) is in an inverted L shape, the bottom of the guide cylinder is integrally connected with a cylindrical pipe (7), and the bottom of the cylindrical pipe (7) is provided with an opening (8);
the bulk material pipe (5) comprises an arc plate (9) which is coaxially and rotatably installed with the cylindrical pipe (7), the arc plate (9) is integrally connected with a rectangular pipe (10), and the rectangular pipe (10) is connected with a transmission device.
3. The cement stabilized macadam mixing station segregation preventing device according to claim 2, wherein the transmission device comprises a transmission plate (11) which coaxially rotates with the resistance roller (6), a connecting rod (12) is eccentrically and rotatably mounted on the transmission plate (11), a U-shaped rod (13) which is vertically and slidably mounted on the side wall of the guide cylinder (2) is rotatably mounted at the other end of each connecting rod (12), a bulk material rod (14) is rotatably mounted on each U-shaped rod (13), a bulk material plate (15) which is integrally connected with the arc-shaped plate (9) is rotatably mounted on the central axis of the cylindrical pipe (7), and the bulk material plate (15) and the bulk material rod (14) are eccentrically and rotatably mounted.
4. The cement stabilized macadam mixing station segregation preventing device as claimed in claim 1, wherein a cylinder (16) is fixedly installed on the frame body (1), a valve plate (17) is vertically and slidably installed in the cylinder (16), a valve rod (18) is integrally connected with the valve plate (17), and one end, extending out of the valve cylinder, of the valve rod (18) is fixedly installed with the temporary storage bin (3);
the control device comprises a U-shaped pipe (19) which is respectively communicated with the upper end and the lower end of the valve cylinder, a control valve is arranged at the communication part of the U-shaped pipe (19) and the upper end of the valve cylinder, the control valve is driven by a resistance roller (6), and the cylinder body (16) and the U-shaped pipe (19) are filled with liquid media.
5. The cement stabilized macadam mixing station segregation preventing device as claimed in claim 4, wherein the U-shaped pipe (19) is integrally provided with an auxiliary pipe (20) which is smaller than the inner diameter of the U-shaped pipe (19) at the upper end communicating part of the valve cylinder, the control valve comprises a valve ball (21) which is rotatably arranged in the U-shaped pipe (19), a channel (22) is arranged in the valve ball (21) in a penetrating manner in a radial direction, the channel (22) is perpendicular to the rotating shaft of the valve ball (21), and the outer wall of the valve ball (21) abuts against the communicating part of the auxiliary pipe (20) and the U-shaped pipe (19);
the valve ball (21) is coaxially and rotatably provided with a control worm wheel (23) arranged outside the U-shaped pipe (19), the control worm wheel (23) is matched with a control worm (24) rotatably arranged on the cylinder body (16), and the control worm (24) is driven by a resistance roller (6).
6. The cement stabilized macadam mixing station segregation preventing device as claimed in claim 5, wherein a transition pipe (25) smaller than the inner diameter of the U-shaped pipe (19) is integrally arranged at a communication part of the U-shaped pipe (19) and the lower end of the barrel (16), an auxiliary ball (26) is axially slidably mounted in the U-shaped pipe (19) below the transition pipe (25), a through hole (27) penetrates through the auxiliary ball (26) along the radial direction of the auxiliary ball, the auxiliary ball (26) is elastically connected with the U-shaped pipe (19), and the outer wall of the auxiliary ball (26) abuts against the communication part of the transition pipe (25) and the U-shaped pipe (19).
7. The cement stabilized macadam mixing station anti-segregation device according to claim 1, characterized in that a plurality of material guide plates (29) rotatably mounted with the inner wall of the material guide cylinder (2) are vertically and alternately arranged in the material guide cylinder (2) above the resistance roller (6) at intervals, the material guide plates (29) are coaxially and rotatably provided with material guide worm gears (30) arranged outside the material guide cylinder (2), and the material guide worm gears (30) on the same side are jointly matched with material guide worms (31) rotatably mounted on the outer wall of the material guide cylinder (2);
the material guide worm (31) is connected with a transmission rod (32) rotatably installed on the frame body (1), a spiral groove (33) is formed in the transmission rod (32), and a driving plunger (34) matched with the spiral groove (33) is fixed on the temporary storage bin (3).
8. A method of using the segregation reducing apparatus of cement stabilized macadam blending station of claims 1-7, comprising the steps of:
s1: broken stones enter the material guide cylinder (2) through the conveying belt and the top of the material guide cylinder (2), the broken stones drive the resistance roller (6) to rotate in the falling process and drive the bulk material pipe (5) rotatably installed at the bottom of the material guide cylinder (2) to do reciprocating swing through the resistance roller (6), and the broken stones are uniformly dumped into the temporary storage bin (3);
s2: along with the rotation of the resistance roller (6), when the resistance roller (6) rotates N circles, the temporary storage bin (3) is controlled to move downwards for a certain distance through the control device, and the falling height of the crushed stones coming out of the bulk material pipe (5) is ensured to be in a constant and proper range;
s3: every time the temporary storage bin (3) moves down for a certain distance, the included angle between the material guide plate (29) which is rotatably arranged in the material guide cylinder (2) and the vertical direction is reduced by a corresponding angle, so that the falling of the materials in the material guide cylinder (2) is smoother, the falling speed of the materials is increased, and the rotating torque acting on the resistance roller (6) is increased.
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| CN111535119A (en) * | 2020-05-11 | 2020-08-14 | 山东省交通科学研究院 | Device of preventing educing in rubble mix station is stabilized to cement |
| CN212402149U (en) * | 2020-05-22 | 2021-01-26 | 福建信达机械有限公司 | Anti-segregation stabilized soil finished product bin |
| WO2021184681A1 (en) * | 2020-03-20 | 2021-09-23 | 三一汽车制造有限公司 | Stirring system, pumping machine and control method therefor, and storage medium |
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| CN205466758U (en) * | 2016-03-04 | 2016-08-17 | 徐州徐工施维英机械有限公司 | Discharging device and dry -mixed mortar remove silo for silo |
| CN209937334U (en) * | 2019-02-26 | 2020-01-14 | 广州肖宁道路工程技术研究事务所有限公司 | Anti segregation device and water mixing plant |
| CN210438100U (en) * | 2019-07-30 | 2020-05-01 | 响水中联水泥有限公司 | Segregation device is prevented to stationary flow storehouse material |
| WO2021184681A1 (en) * | 2020-03-20 | 2021-09-23 | 三一汽车制造有限公司 | Stirring system, pumping machine and control method therefor, and storage medium |
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