CN116809395B - Air-flow sand and stone screening device - Google Patents
Air-flow sand and stone screening device Download PDFInfo
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- CN116809395B CN116809395B CN202311115464.2A CN202311115464A CN116809395B CN 116809395 B CN116809395 B CN 116809395B CN 202311115464 A CN202311115464 A CN 202311115464A CN 116809395 B CN116809395 B CN 116809395B
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- 238000012216 screening Methods 0.000 title claims abstract description 269
- 239000004576 sand Substances 0.000 title claims abstract description 115
- 239000004575 stone Substances 0.000 title claims abstract description 91
- 230000007246 mechanism Effects 0.000 claims abstract description 89
- 230000005540 biological transmission Effects 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 16
- 241001233242 Lontra Species 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 6
- 238000005096 rolling process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 12
- 235000019580 granularity Nutrition 0.000 description 9
- 238000010298 pulverizing process Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The invention relates to the technical field of airflow screening and discloses an airflow sand and stone screening device, which comprises a screening box body, wherein a first screening mechanism and a second screening mechanism which are arranged up and down are arranged in the screening box body, the first screening mechanism comprises a screening screen plate, the second screening mechanism comprises a rectangular mounting frame and a combined screening net arranged in the rectangular mounting frame, the rectangular mounting frame is obliquely arranged, the diameter of a screen hole of the combined screening net is gradually increased from the high end to the bottom end of the rectangular mounting frame, a gas flow pipe is arranged on the side wall, close to the high end of the rectangular mounting frame, of the screening box body, and a plurality of gas flow holes are obliquely arranged on the side wall, close to the rectangular mounting frame, of the gas flow pipe; the airflow pipe blows strong airflow to enable sand and stones to roll from the high end to the bottom end on the combined screening net, sand and stones are prevented from being accumulated on the combined screening net, and as the screen hole diameter of the combined screening net is gradually increased from the high end to the bottom end of the rectangular mounting frame, the sand and stones are gradually screened in the rolling process, and sand and stones with different particle sizes are classified and screened.
Description
Technical Field
The invention relates to the technical field of airflow screening, in particular to an airflow sand and stone screening device.
Background
Sand and stone are indispensable materials in engineering construction, the sand and stone screening device is used for screening sand and stone, the use quality of sand and stone can be guaranteed, the traditional sand screening device is simple in structure, only an inclined screen is arranged, a worker throws sand and stone to be screened towards the screen through a shovel, fine sand and stone pass through the screen and fall on the lower side of the screen, coarse sand and stone fall on the upper side of the screen after being blocked by the screen, labor intensity is high, and sand screening is uneven and incomplete; the sand screening machine has the advantages that the efficiency can be improved, the labor intensity is reduced, because the sand and the stone with larger volume are more, the crushing blades are arranged in the sand screening machine at present, the sand and the stone with larger volume are crushed and then screened, so that the sand and the stone with larger volume are crushed and utilized, the utilization efficiency of the sand and the stone is improved, however, the sand screening machine has the problems that firstly, the crushing volume of the sand and the stone can not be controlled after the sand is crushed by the crushing blades, the sand and the stone with larger volume can be obtained, that is, the sand and the stone with different granularity can only reach better effects after being screened by the screen, and the existing screening mechanism can not further screen the sand and the stone with different granularity, so that the subsequent use of the sand and the stone is affected; secondly, current crushing mechanism smashes inefficiency, crushing effect is poor, and mainly lie in crushing blade's crushing scope is less, and the gravel and sand is piled up the state and is located the sand screening machine to lead to the gravel and sand to smash the collision inefficiency of blade, cause crushing inefficiency and crushing effect subalternation problem.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides an airflow sand and stone screening device, and solves the problem that sand and stones with different granularities cannot be screened in the prior art.
The aim of the invention is realized by the following technical scheme: the utility model provides an air current formula sand and stone screening plant, includes the screening box, be provided with first screening mechanism and second screening mechanism in the screening box, the second screening mechanism is located under the first screening mechanism, first screening mechanism includes screening otter board, screening otter board is along the direction of height reciprocating motion of screening box is in order to produce the vibration, the second screening mechanism includes rectangle installing frame and combination screening net, rectangle installing frame slope sets up, combination screening net sets up in the rectangle installing frame, the sieve mesh diameter of combination screening net is from the high end of rectangle installing frame to the bottom increase gradually, slope is provided with the guide board between first screening mechanism and the second screening mechanism, the high end of guide board is fixed in the inside wall of screening box, the bottom of guide board is located directly over the high end of rectangle installing frame, the lateral wall that the screening box is close to the high end of rectangle installing frame installs the air current pipe, the air current pipe is close to the lateral wall slope of rectangle installing frame has seted up a plurality of air current holes, along the axial direction of air current holes of air current hole flush with the bottom surface of the rectangle installing frame of a plurality of air current holes, the bottom surface of the air current hole is parallel to the rectangle installing frame;
the screening box is internally provided with a crushing mechanism, the crushing mechanism is positioned above the first screening mechanism, and the crushing mechanism is used for crushing sand and stones on the first screening mechanism.
In some embodiments, the crushing mechanism comprises a main shaft, an outer gear ring, a planet carrier and a crushing assembly, the main shaft is rotationally connected with the screening box body, the outer gear ring is sleeved on the main shaft in a clearance mode, the outer gear ring is fixedly connected with the screening box body, the planet carrier is located below the outer gear ring and is fixedly sleeved on the main shaft, a plurality of planet gears are arranged on the planet carrier and uniformly distributed around the circle center of the outer gear ring, the planet gears are rotationally connected with the planet carrier through planet shafts, the planet shafts are in transmission connection with the crushing assembly, the crushing assembly is located below the planet carrier, and the crushing assembly is provided with a crushing shaft in a rotating mode and is provided with crushing blades on the crushing shaft.
In some embodiments, the crushing assembly further comprises a driven shaft and a crank, one end of the driven shaft is rotationally connected with the planet carrier, the other end of the driven shaft is fixedly connected with one end of the crank, a first gear is sleeved on the driven shaft, one end of the planet shaft penetrates through the planet carrier to be sleeved with a second gear, the second gear is meshed with the first gear, and the crushing shaft is rotationally connected with the other end of the crank.
In some embodiments, a driving cavity is arranged in the planet carrier, a driven cavity is arranged in the crank, the driven shaft is hollow, a transmission shaft is coaxially arranged in the driven shaft, the transmission shaft is rotationally connected with the planet carrier, a first large gear and a first small gear are arranged in the driving cavity, the first large gear is sleeved on the planet shaft, the first small gear is sleeved on the transmission shaft, the first small gear is meshed with the first large gear, a first belt pulley and a second belt pulley are arranged in the driven cavity, the first belt pulley is sleeved on the transmission shaft, the second belt pulley is sleeved on the crushing shaft, the first belt pulley is connected with the second belt pulley through belt transmission, and a spindle motor is arranged at the top of the screening box body and is connected with an output shaft of the spindle motor in a transmission manner.
In some embodiments, the crushing mechanism further comprises an outer guard plate and an inner guard plate, the inner guard plate is fixedly sleeved on the main shaft, the outer guard plate is in a circular ring shape, the inner wall of the outer guard plate is fixed in the screening box body, the inner guard plate and the outer guard plate are both positioned between the first gear and the crank, the driven shaft is in contact with the inner wall of the outer guard plate and the outer wall of the inner guard plate, two adjacent driven shafts are provided with arc-shaped sealing plates, the arc-shaped sealing plates and the main shaft are concentrically arranged, semicircular holes are formed in two ends of the arc-shaped sealing plates, the diameter of each semicircular hole is equal to that of the driven shaft, the two adjacent semicircular holes form a complete circular hole, the driven shaft is adapted in the circular hole, the inner wall and the outer wall of the arc-shaped sealing plates are both fixed with arc-shaped sliding strips, the outer wall of the inner guard plate and the inner wall of the outer guard plate are both provided with annular sliding grooves, and the arc-shaped sliding strips are movably adapted in the annular sliding grooves.
In some embodiments, the combined screening net comprises a plurality of screening components which are contacted and arranged along the length direction of the rectangular mounting frame, the screening components comprise two transverse mounting plates and two longitudinal mounting plates, the transverse mounting plates are arranged in an up-down staggered mode, a plurality of longitudinal screening wires are uniformly distributed between the two transverse mounting plates along the length direction of the transverse mounting plates, two ends of each longitudinal screening wire are respectively connected to the bottoms of the two transverse mounting plates, one transverse mounting plate is fixedly connected with the rectangular mounting frame, the other transverse mounting plate is provided with a degree of freedom for moving along the length direction of each longitudinal screening wire, a plurality of transverse screening wires are uniformly distributed between the two longitudinal mounting plates along the length direction of each longitudinal screening wire, two ends of each transverse screening wire are respectively connected to the tops of the two longitudinal mounting plates, one longitudinal mounting plate is fixedly connected with the rectangular mounting frame, the other longitudinal mounting plate is provided with a degree of freedom for moving along the length direction of each transverse screening wire, the longitudinal screening wires and the transverse screening wires form a local screening net with the same aperture, and the local screening net of the plurality of screening wires is gradually increased along the height to the bottom end of the rectangular aperture frame of the screen.
In some embodiments, the movable state of the transverse mounting plate is connected with a longitudinal push rod, a longitudinal push plate is arranged on the outer side of the screening box body, the longitudinal push rod movably penetrates through the rectangular mounting frame and the screening box body to be connected with the longitudinal push plate, a longitudinal air cylinder is mounted on the side wall of the screening box body, and a telescopic shaft of the longitudinal air cylinder is connected with the longitudinal push plate;
the rectangular mounting frame is formed with the inner chamber at the both ends of vertical mounting panel, and active state the both ends of vertical mounting panel all are fixed with the connecting plate, the inner chamber activity is provided with horizontal push rod, connecting plate fixed connection horizontal push rod, the outside of screening box is provided with horizontal cylinder, the telescopic shaft of horizontal cylinder is connected with horizontal push pedal, horizontal push rod activity is passed rectangular mounting frame, screening box are connected horizontal push pedal.
In some embodiments, the inner wall of screening box is fixed with the rectangle frame, a plurality of springs have been evenly distributed to the circumference on the rectangle frame, screening otter board is located the top of rectangle frame, the both ends of spring are connected respectively rectangle frame and screening otter board, the both ends of screening otter board all are connected with the mechanism of acting as go-between, the mechanism of acting as go-between includes motor and the wire reel of acting as go-between, the motor of acting as go-between is installed on the lateral wall of screening box, the wire reel is installed on the output shaft of motor of acting as go-between, the winding has acted as go-between on the wire reel, the outer wall and the inner wall of screening box all rotate and are provided with the wire wheel, act as go-between and walk around the wire wheel is connected the screening otter board.
In some embodiments, a telescopic frame is arranged between the rectangular frame and the screening screen, the spring is located between the telescopic frame and the inner wall of the screening box, the telescopic frame comprises a fixed frame and a movable frame, one end of the fixed frame is connected with the rectangular frame, the other end of the fixed frame slides through the movable frame, and one end of the movable frame away from the fixed frame is connected with the screening screen.
In some embodiments, a feed hopper is disposed on a side wall of the screening box, and a plurality of discharge ports are disposed at a bottom of the screening box along a material screening flow direction of the second screening mechanism.
The beneficial effects of the invention are as follows:
1. the sand and stone that will screen the first screening mechanism through the guide board is led to fall into the high end of second screening mechanism, the cooperation air current pipe blows out strong air current, make sand and stone roll to the bottom from the high end on combination formula screening net, avoid sand and stone to pile up on combination formula screening net, because the sieve mesh diameter of combination formula screening net is by the high end of rectangle installing frame to the bottom increases gradually, thereby make sand and stone at rolling in-process by screening gradually, and classified screening has been carried out with the sand and stone of different granularities, the convenience is applied the sand and stone of different granularities in different places, make the utilization ratio of sand and stone obtain the maximize.
2. The screening otter board can reciprocate from top to bottom to throw the gravel and sand on the screening otter board to crushing mechanism, increased gravel and sand and crushing mechanism's collision frequency, improved gravel and sand's crushing efficiency and crushing effect, secondly, the reciprocating motion of screening otter board produces stronger vibration, the risk that the screening otter board was blocked up that reduces that can be great.
3. The main shaft drives the planet carrier to rotate, so that the planet carrier drives a plurality of planet gears to revolve around the circle center of the outer gear ring, the planet gears are meshed with the outer gear ring, the planet gears can rotate around the axis of the planet carrier, and the planet gears drive the crank to rotate through the meshing of the first gear and the second gear, so that the crushing blade rotates around the axis of the transmission shaft, the rotation range of the crushing blade is enlarged through the crank, and secondly, the planet shaft can drive the crushing shaft to rotate, so that the crushing blade rotates around the axis of the planet carrier, therefore, the crushing blade has three rotational degrees of freedom, the action range of the crushing blade is greatly enlarged, the collision frequency of sand and stone and the crushing blade is further enhanced, and the crushing device has higher crushing efficiency and better crushing effect.
Drawings
FIG. 1 is a schematic view of the internal structure of an air-flow sand screening device according to the present invention;
FIG. 2 is a schematic view of a partial structure of a pulverizing mechanism of an air-flow sand screening device according to the present invention;
FIG. 3 is a schematic view of a crushing mechanism of an air-flow sand screening device according to the present invention;
FIG. 4 is a schematic view showing the internal structure of a pulverizing mechanism in an air-flow sand screening device according to the present invention;
FIG. 5 is an enlarged view of FIG. 4 at C;
FIG. 6 is a schematic view of an arcuate closure plate of an air flow sand screening device according to the present invention;
FIG. 7 is a schematic illustration of the screen assembly of an air flow sand screening device of the present invention;
FIG. 8 is a top view of a modular screening net in an air-flow sand screening device according to the present invention;
FIG. 9 is a schematic view of the internal structure of a rectangular mounting frame in an air-flow sand screening device according to the present invention;
FIG. 10 is a schematic view of the structure of a screening box of an air-flow sand screening device according to the present invention;
FIG. 11 is an enlarged view of FIG. 1 at A;
FIG. 12 is an enlarged view of FIG. 1 at B;
in the figure, the 1-screening box, 3-second screening mechanism, 4-screening screen, 5-rectangular mounting frame, 7-guide plate, 8-air flow pipe, 9-air flow hole, 10-crushing mechanism, 11-main shaft, 12-outer gear ring, 13-planet carrier, 14-planet gear, 15-planet shaft, 16-crushing shaft, 17-crushing blade, 18-driven shaft, 19-crank, 20-first gear, 21-second gear, 22-driving cavity, 23-driven cavity, 24-transmission shaft, 25-first large gear, 26-first small gear, 27-first belt pulley, 28-second belt pulley, 29-outer guard plate, 30-inner guard plate, 31-arc seal plate, 32-semicircle hole, 33-arc slide, 34-annular chute, 35-main shaft motor, 36-transverse mounting plate, 37-longitudinal mounting plate, 38-longitudinal screen wire, 39-transverse screen wire, 40-longitudinal push rod, 41-longitudinal push plate, 42-longitudinal cylinder, 43-connecting plate, 44-transverse push rod, 45-rectangular push plate, 48-transverse push plate, 48-first belt pulley, 28-second belt pulley, 29-outer guard plate, 30-inner guard plate, 31-arc seal plate, 32-semicircle orifice, 33-arc slide bar, 34-ring chute, 35-main shaft, 36-transverse screen wire, 37-longitudinal mounting plate, 38-longitudinal screen wire, 39-longitudinal push plate, 40-longitudinal push plate, 41-longitudinal push plate, 42, transverse push plate, 44-push plate, transverse push plate, and 52-push plate, 48-push plate, transverse push plate, 48-rectangular push plate, and 58-square wire, 52-square wire frame, and 55-flat plate, wire, and wire frame, and 55-flat plate, and 60-flat plate.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1 to 12, an airflow sand and stone screening device includes a screening box 1, a feed hopper 56 is disposed on a side wall of the screening box 1, a first screening mechanism and a second screening mechanism 3 are disposed in the screening box 1, the second screening mechanism 3 is located right below the first screening mechanism, the first screening mechanism includes a screening screen 4, the screening screen 4 reciprocates along a height direction of the screening box 1 to generate vibration, a crushing mechanism 10 is disposed in the screening box 1, the crushing mechanism 10 is located above the first screening mechanism, the crushing mechanism 10 is used for crushing sand and stone on the first screening mechanism, the sand and stone is thrown into the screening box 1 through the feed hopper 56, so that the sand and stone falls on the screening screen 4, the screening screen 4 can reciprocate up and down, thereby throwing the sand and stone on the screening screen 4 to the crushing mechanism 10, increasing a collision frequency of the sand and stone, improving a crushing efficiency and a crushing effect of the sand and stone, and secondly, the reciprocating motion of the screening screen 4 generates stronger vibration, the screen 4 can greatly reduce a risk of blocking the screen 4 by the screen 4, and even if the screen 4 is blocked by the screen 4 is crushed, the screen 4 has a certain vibration effect, and the screen 4 can be pushed down; the second screening mechanism 3 comprises a rectangular mounting frame 5 and a combined screening net, the rectangular mounting frame 5 is obliquely arranged, the combined screening net is arranged in the rectangular mounting frame 5, the diameter of a screen hole of the combined screening net is gradually increased from the high end to the bottom end of the rectangular mounting frame 5, a guide plate 7 is obliquely arranged between the first screening mechanism and the second screening mechanism 3, the high end of the guide plate 7 is fixed on the inner side wall of the screening box body 1, the bottom end of the guide plate 7 is positioned right above the high end of the rectangular mounting frame 5, a gas flow pipe 8 is arranged on the side wall of the screening box body 1 close to the high end of the rectangular mounting frame 5, a plurality of gas flow holes 9 are obliquely arranged on the side wall of the gas flow pipe 8 close to the rectangular mounting frame 5, a plurality of gas flow holes 9 are uniformly distributed along the axial direction of the gas flow pipe 8, the axis of the gas flow holes 9 is parallel to the rectangular mounting frame 5, the lowest end of the gas flow holes 9 is flush with the top surface of the rectangular mounting frame 5, the mesh size of the screening screen 4 is equal to or slightly smaller than the maximum diameter of the combined screening net, the screening screen 4 mainly screens down the sand and stones which can be put into use, therefore, the mesh size of the screening screen 4 needs to be the maximum particle size of the sand and stones which can be screened down and put into use, the sand and stones with the volume exceeding the requirement are crushed through the crushing mechanism, the sand and stones which meet the requirement are screened down under the action of the screening screen 4, the sand and stones with different particle size ranges are further screened down through the second screening mechanism 3, in particular, the sand and stones screened down by the screening screen 4 are guided to fall into the high end of the second screening mechanism 3 through the guide plate 7 and are blown out by the air flow pipe 8 to roll the sand and stones from the high end to the bottom end of the combined screening net, the sand and stones are prevented from being piled up on the combined screening net, and the mesh size of the combined screening net is gradually increased from the high end to the bottom end of the rectangular installation frame 5, therefore, the sand and stones are gradually screened in the rolling process, and the sand and stones with different granularity are classified and screened, so that the sand and stones with different granularity can be conveniently applied to different places, and the utilization rate of the sand and stones is maximized; the bottom of the screening box body 1 is provided with a plurality of discharge holes 57 along the material screening flowing direction of the second screening mechanism 3, and when the screening box is implemented, due to the influence of the screen holes on the combined screening net, sand and stones can be partially clamped in the screen holes, so that the rolling of the sand and stones is limited, the sand and stones are easily accumulated on the combined screening net, and the normal screening of the sand and stones is influenced, therefore, the arrangement of the air flow pipe 8 is very necessary, one end of the air flow pipe 8 is connected with an industrial fan, such as an axial flow fan, strong air flow is generated through the industrial fan and is introduced into the air flow pipe 8, the air current is discharged from airflow hole 9, because the axis of airflow hole 9 is on a parallel with rectangle installing frame 5, make the air current that blows out be on a parallel with the upper surface of combination formula screening net, make the air current act on the sand and stone, the gravity of cooperation sand and stone makes sand and stone can normally roll on combination formula screening net, avoid sand and stone to pile up the efficiency that influences the differentiation screening, and the sand and stone of different granularity ranges is discharged from different discharge gates 57, realize the classification screening to sand and stone particle diameter, obtain the sand and stone of particle diameter range difference, the use of the input of follow-up sand and stone of convenience.
Based on the second embodiment and the first embodiment, as shown in fig. 1 and 10, the specific vibration mode of the screening screen 4 is that a rectangular frame 48 is fixed on the inner wall of the screening box 1, a plurality of springs 49 are uniformly distributed on the circumference of the rectangular frame 48, the screening screen 4 is positioned above the rectangular frame 48, two ends of the springs 49 are respectively connected with the rectangular frame 48 and the screening screen 4, two ends of the screening screen 4 are connected with a wire pulling mechanism, the wire pulling mechanism comprises a wire pulling motor 50 and a wire winding disc 51, the wire pulling motor 50 is arranged on the outer side wall of the screening box 1, the wire winding disc 51 is arranged on the output shaft of the wire pulling motor 50, a wire pulling 52 is wound on the wire winding disc 51, wire guiding wheels 53 are rotatably arranged on the outer wall and the inner wall of the screening box 1, the wire pulling 52 bypasses the wire guiding wheels 53 to be connected with the screening screen 4, the wire pulling motor 50 adopts a common motor without a self-locking mechanism, such as an electric motor and the like, the wire pulling motor 50 drives the wire spool 51 to rotate for winding, so that the wire spool 51 winds the wire pulling 52, the screening screen 4 moves downwards to compress the spring 49 under the action of the wire pulling 52, after the screening screen 4 moves for a certain distance, the wire pulling motor 50 stops rotating, the screening screen 4 drives the wire spool 51 to rotate reversely under the action of the compressed spring 49 for paying off, so that the screening screen 4 moves upwards, sand on the screening screen 4 is thrown to the crushing mechanism 10, the up-and-down vibration of the screening screen 4 is realized through the circulation of the wire pulling motor 50, the collision frequency and the collision strength of the sand and the crushing mechanism 10 are enhanced, and the crushing efficiency of the sand is accelerated.
Further, as shown in fig. 1, a telescopic frame is arranged between the rectangular frame 48 and the screening net plate 4, the spring 49 is located between the telescopic frame and the inner wall of the screening box 1, the telescopic frame comprises a fixed frame 54 and a movable frame 55, one end of the fixed frame 54 is connected with the rectangular frame 48, the other end of the fixed frame 54 slides through the movable frame 55, one end, far away from the fixed frame 54, of the movable frame 55 is connected with the screening net plate 4, the spring 49 is isolated from sand and stone through the telescopic frame, the sand and stone is prevented from falling into the spring 49 to cause the clamping shell, the spring 49 is ensured to continuously and stably work, the influence of the sand and stone is avoided, and secondly, the degree of freedom of movement between the movable frame 55 and the fixed frame 54 is avoided, the screening net plate 4 is not influenced to move up and down, and the screening net plate 4 is ensured to reciprocate to generate vibration.
In the third embodiment, although the impact frequency and impact strength of sand and stone with the grinding mechanism 10 are enhanced by adopting a throwing mode in the second embodiment, the grinding area of the grinding mechanism 10 is limited, mainly in that the arrangement space of the grinding mechanism cannot be too large, otherwise, the sand and stone throwing space in the screening box body 1 is greatly reduced, sand and stone screening is not facilitated, and for this reason, only air can be discharged from the grinding range of the grinding mechanism 10, therefore, on the basis of the second embodiment, as shown in fig. 2 to 6, the grinding mechanism 10 comprises a main shaft 11, an outer gear ring 12, a planet carrier 13 and a grinding assembly, the main shaft 11 is rotationally connected with the screening box body 1, the outer gear ring 12 is sleeved on the main shaft 11 in a clearance way, the outer gear ring 12 is fixedly connected with the screening box body 1, the planet carrier 13 is positioned below the outer gear ring 12 and fixedly sleeved on the main shaft 11, a plurality of planet gears 14 are arranged on the planet carrier 13, the planet gears 14 are uniformly distributed around the circle center of the external gear ring 12, the planet gears 14 are rotationally connected with the planet carrier 13 through the planet shafts 15, the planet shafts 15 are in transmission connection with a crushing assembly, the crushing assembly is positioned below the planet carrier 13, the crushing assembly comprises a crushing shaft 16 rotationally arranged, a crushing blade 17 is arranged on the crushing shaft 16, a spindle motor 35 is arranged at the top of the screening box 1, an output shaft of the spindle motor 35 is in transmission connection with the spindle 11, the spindle motor 35 drives the spindle 11 to rotate, the spindle 11 drives the planet carrier 13 to rotate, the planet carrier 13 drives the planet gears 14 to revolve around the circle center of the external gear ring 12, the planet gears 14 also rotate around the axis of the planet gears 14 due to the fact that the planet gears 14 are meshed with the external gear ring 12 and the external gear ring 12 is in a fixed state, the crushing assembly further comprises a driven shaft 18 and a crank 19, one end of the driven shaft 18 is rotationally connected with the planet carrier 13, the other end is fixedly connected with one end of the crank 19, a first gear 20 is sleeved on the driven shaft 18, one end of the planet shaft 15 is sleeved with a second gear 21 penetrating through the planet carrier 13, the second gear 21 is meshed with the first gear 20, the crushing shaft 16 is rotationally connected with the other end of the crank 19, the planet shaft 15 is meshed with the first gear 20 through the second gear 21 to drive the driven shaft 18 to rotate, the driven shaft 18 drives the crank 19 to rotate around the axis of the driven shaft 18, the crank 19 drives the crushing blade 17 to rotate around the axis of the driven shaft 18, so that the rotation range of the crushing blade 17 is enlarged through the crank 19, a driving cavity 22 is arranged in the planet carrier 13, a driven cavity 23 is arranged in the crank 19, the driven shaft 18 is hollow, a transmission shaft 24 is coaxially arranged in the driven shaft 18, the transmission shaft 24 is rotationally connected with the planet carrier 13, a first large gear 25 and a first small gear 26 are arranged in the driving cavity 22, the first large gear 25 is sleeved on the planetary shaft 15, the first small gear 26 is sleeved on the transmission shaft 24, the first small gear 26 is meshed with the first large gear 25, a first belt pulley 27 and a second belt pulley 28 are arranged in the driven cavity 23, the first belt pulley 27 is sleeved on the transmission shaft 24, the second belt pulley 28 is sleeved on the crushing shaft 16, the first belt pulley 27 is connected with the second belt pulley 28 through a belt 58 in a transmission manner, when the planetary shaft 15 rotates, the transmission shaft 24 is driven to rotate through the meshing of the first small gear 26 and the first large gear 25, the transmission shaft 24 is driven to rotate with the second belt pulley 28 through the belt 58, the crushing shaft 16 is driven to rotate by the second belt pulley 28, the crushing shaft 16 drives the crushing blades 17 to rotate around the axis of the crushing blade 17, therefore, one of the two belt pulleys has three rotational degrees of freedom, revolution degrees of freedom of rotation about the outer ring gear 12 axis; secondly, the degree of freedom of rotation around the axis of the driven shaft 18; thirdly, the degree of freedom of rotation around the axis of the transmission shaft 24 greatly expands the action range of the crushing blade 17, further strengthens the collision frequency of sand and stone and the crushing blade 17, has higher crushing efficiency and better crushing effect, and can ensure good crushing effect without increasing the setting volume of the crushing blade 17, and ensures that the sand and stone capacity in the screening box body 1 is not influenced from the aspect of increasing the action range of the crushing blade 17; in specific implementation, the bottom of the main shaft 11 is connected with a main crushing shaft 59, the main crushing shaft 59 is provided with a main crushing blade 60, the main crushing shaft 59 only rotates along with the main shaft 11, but the crushing blade 17 has three rotational degrees of freedom, and in the process of driving the crushing blade 17 to rotate by a crank, the crushing blade 17 can throw out the collided sand and stone, so that the movement strength of the sand and stone is enhanced, and the sand and stone can be crushed rapidly between the main crushing blade 60 and the crushing blade 17.
In the fourth embodiment and the second embodiment, the spring 49 is protected, but the unique design of the pulverizing mechanism 10 makes it difficult to seal and protect the pulverizing mechanism, sand and stone easily fly into the pulverizing mechanism 10 to affect the gear transmission, thereby causing damage to the pulverizing mechanism 10, so on the basis of the third embodiment, as shown in fig. 2, 3 and 6, the pulverizing mechanism further includes an outer protecting plate 29 and an inner protecting plate 30, the inner protecting plate 30 is fixedly sleeved on the main shaft 11, the outer protecting plate 29 is in a circular ring shape, the inner wall of the outer protecting plate 29 is fixed on the screening box 1, the inner protecting plate 30 and the outer protecting plate 29 are both located between the first gear 20 and the crank 19, the driven shafts 18 contact the inner wall of the outer protecting plate 29 and the outer wall of the inner protecting plate 30, an arc-shaped sealing plate 31 is arranged between two adjacent driven shafts 18, the arc-shaped sealing plates 31 and the main shaft 11 are concentrically arranged, semicircular holes 32 are arranged at two ends of the arc-shaped sealing plates 31, the diameter of the semicircle hole 32 is equal to that of the driven shaft 18, two adjacent semicircle holes 32 form a complete circular hole, the driven shaft 18 is matched in the circular hole, the inner wall and the outer wall of the arc-shaped sealing plate 31 are both fixed with arc-shaped sliding strips 33, the outer wall of the inner protecting plate 30 and the inner wall of the outer protecting plate 29 are both provided with annular sliding grooves 34, the arc-shaped sliding strips 33 are movably matched in the annular sliding grooves 34, the crushing mechanism 10 is prevented from interfering in operation by rotating the arc-shaped sealing plate 31 and the inner protecting plate 30, the arc-shaped sealing plate 31 rotates along with the planetary shaft 15 around the center of the outer gear ring 12, and the driven shaft 18 can rotate around the axis of the driven shaft 18 due to the fact that the two adjacent semicircle holes 32 form a complete circular hole, the movable adaptation of the driven shaft 18 is in the circular hole, the arrangement of the arc-shaped sealing plate 31 can not influence the revolution freedom degree and the rotation freedom degree of the driven shaft 18, and the outer protecting plate 29, the combination of the inner guard plate 30 and the arc-shaped sealing plate 31 seals the structure above the crank 19, so that the normal operation of the crushing mechanism 10 is not influenced, the exposed transmission part of the crushing mechanism 10 is sealed, sand and stone are prevented from flying into the transmission part of the crushing mechanism 10, and the crushing mechanism 10 can continuously and stably operate.
In the fifth embodiment, the screen panel 4 may be opened by vibrating up and down to prevent clogging, but the combined screen is also blocked, because the combined screen is inclined, the vibration opening is not suitable for this, because the vibration opening causes sand and stones to cross the combined screen in a leap state, causing sand and stones not to roll on the combined screen, causing sand and stones to move from the front end of the combined screen to the rear end of the combined screen, so that in order to ensure the classifying screening effect, the sand and stones are moved on the combined screen in a rolling manner by using an airflow manner, but in this way, the difficulty of opening the combined screen is caused, and in this way, based on the fourth embodiment, as shown in fig. 7 to 10, the combined screen includes a plurality of screen assemblies arranged in contact along the length direction of the rectangular mounting frame 5, the screening assembly comprises two transverse mounting plates 36 and two longitudinal mounting plates 37, wherein the transverse mounting plates 36 are arranged in an up-down staggered way, a plurality of longitudinal screen wires 38 are uniformly distributed between the two transverse mounting plates 36 along the length direction of the two transverse mounting plates, two ends of each longitudinal screen wire 38 are respectively connected to the bottoms of the two transverse mounting plates 36, one transverse mounting plate 36 is fixedly connected with a rectangular mounting frame 5, the other transverse mounting plate 36 has the freedom of moving along the length direction of each longitudinal screen wire 38, a plurality of transverse screen wires 39 are uniformly distributed between the two longitudinal mounting plates 37 along the length direction of the two longitudinal mounting plates, two ends of each transverse screen wire 39 are respectively connected to the tops of the two longitudinal mounting plates 37, one longitudinal mounting plate 37 is fixedly connected with the rectangular mounting frame 5, the other longitudinal mounting plate 37 has the freedom of moving along the length direction of each transverse screen wire 39, the longitudinal screen wires 38 and the transverse screen wires 39 form a local screening net with the same aperture, the mesh apertures of the partial screening nets of the plurality of screen assemblies gradually increase along the upper to lower ends of the rectangular mounting frame 5. The fixed longitudinal mounting plates 37 in one screening assembly are contacted with the movable longitudinal mounting plates 37 in the adjacent screening assembly, and sand and stones are screened differently through the screening assemblies with different inner diameters of the plurality of screening holes, so that sand and stones with different granularity are screened out, screening of the classification of the particle diameters of the sand and stones is realized, when the combined screening net is blocked, the sliding transverse mounting plates 36 are moved close to the fixed transverse mounting plates 36, so that the distance between the two transverse mounting plates 36 is reduced, the longitudinal screen wires 38 are in a loose state, and the same, the sliding longitudinal mounting plates 37 are moved close to the fixed longitudinal mounting plates 37, so that the distance between the two longitudinal mounting plates 37 is reduced, the transverse screen wires 39 are in a loose state, and the sand and stones clamped in the screening holes can fall down to finish dredging.
Further, as shown in fig. 8 to 10, the movable transverse mounting plate 36 is connected with a longitudinal push rod 40, the outside of the screening box 1 is provided with a longitudinal push plate 41, the longitudinal push rod 40 movably passes through the rectangular mounting frame 5, the screening box 1 is connected with the longitudinal push plate 41, the side wall of the screening box 1 is provided with a longitudinal air cylinder 42, a telescopic shaft of the longitudinal air cylinder 42 is connected with the longitudinal push plate 41, the longitudinal push plate 41 is driven to move along the length direction of the longitudinal screen wires 38 by the telescopic shaft of the longitudinal air cylinder 42, the longitudinal push plate 41 drives the sliding transverse mounting plate 36 to move by the longitudinal push rod 40, so that the longitudinal push rod 40 can synchronously drive the plurality of transverse mounting plates 36 to move, the structure is compact, the set power source is less, and the cost is low; the rectangular mounting frame 5 is provided with inner cavities at two ends of the longitudinal mounting plate 37, connecting plates 43 are fixed at two ends of the longitudinal mounting plate 37 in a movable state, transverse push rods 44 are movably arranged at the inner cavities, the connecting plates 43 are fixedly connected with the transverse push rods 44, transverse air cylinders 45 are arranged on the outer sides of the screening boxes 1, telescopic shafts of the transverse air cylinders 45 are connected with transverse push plates 61, the transverse push rods 44 movably penetrate through the rectangular mounting frame 5 and the screening boxes 1 to be connected with the transverse push plates 61, the transverse push plates 61 are driven to move along the transverse screen wires 39 through the telescopic motion of the transverse air cylinders 45, the transverse push plates 61 drive the longitudinal mounting plate 37 to move through the transverse push rods 44, and accordingly the longitudinal mounting plate 37 in a sliding state is synchronously driven to move, so that the transverse screen wires 39 are in a loose state to be dredged or in a tensioning state to be screened.
In the description of the present invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention; and those of ordinary skill in the art will appreciate that the benefits achieved by the present invention are merely better than those achieved by the current embodiments of the prior art in certain circumstances and are not intended to be the most excellent uses directly in the industry.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (2)
1. The utility model provides an airflow type sand and stone screening plant, its characterized in that includes screening box (1), be provided with first screening mechanism and second screening mechanism (3) in screening box (1), second screening mechanism (3) are located under the first screening mechanism, first screening mechanism includes screening otter board (4), screening otter board (4) are followed the direction of height reciprocating motion of screening box (1) is in order to produce the vibration, second screening mechanism (3) include rectangle installing frame (5) and combination screening net, rectangle installing frame (5) slope sets up, combination screening net sets up in rectangle installing frame (5), the sieve mesh diameter of combination screening net is by the high end of rectangle installing frame (5) is crescent to the bottom, the slope is provided with guide board (7) between first screening mechanism and the second screening mechanism (3), the high end of guide board (7) is fixed in the inside wall of screening box (1), the bottom of guide board (7) is located rectangle installing frame (5) is close to the side wall (8) the side wall of rectangle installing frame (8), the air flow holes (9) are uniformly distributed along the axial direction of the air flow pipe (8), the axis of the air flow holes (9) is parallel to the rectangular mounting frame (5), and the lowest end of the air flow holes (9) is flush with the top surface of the rectangular mounting frame (5);
a crushing mechanism (10) is arranged in the screening box body (1), the crushing mechanism (10) is positioned above the first screening mechanism, and the crushing mechanism (10) is used for crushing sand and stones on the first screening mechanism;
the crushing mechanism (10) comprises a main shaft (11), an outer gear ring (12), a planet carrier (13) and a crushing assembly, wherein the main shaft (11) is rotationally connected with the screening box body (1), the outer gear ring (12) is sleeved on the main shaft (11) in a clearance mode, the outer gear ring (12) is fixedly connected with the screening box body (1), the planet carrier (13) is positioned below the outer gear ring (12) and is fixedly sleeved on the main shaft (11), a plurality of planet gears (14) are arranged on the planet carrier (13), the planet gears (14) are uniformly distributed around the circle center of the outer gear ring (12), the planet gears (14) are rotationally connected with the planet carrier (13) through planet shafts (15), the planet shafts (15) are in transmission connection with the crushing assembly, the crushing assembly is positioned below the planet carrier (13), and the crushing assembly comprises a crushing shaft (16) which is rotationally provided with crushing blades (17);
the crushing assembly further comprises a driven shaft (18) and a crank (19), one end of the driven shaft (18) is rotationally connected with the planet carrier (13), the other end of the driven shaft is fixedly connected with one end of the crank (19), a first gear (20) is sleeved on the driven shaft (18), one end of the planet shaft (15) penetrates through the planet carrier (13) to be sleeved with a second gear (21), the second gear (21) is meshed with the first gear (20), and the crushing shaft (16) is rotationally connected with the other end of the crank (19);
a driving cavity (22) is arranged in the planet carrier (13), a driven cavity (23) is arranged in the crank (19), the driven shaft (18) is arranged in a hollow manner, a transmission shaft (24) is coaxially arranged in the driven shaft (18), the transmission shaft (24) is rotationally connected with the planet carrier (13), a first large gear (25) and a first small gear (26) are arranged in the driving cavity (22), the first large gear (25) is sleeved on the planet shaft (15), the first small gear (26) is sleeved on the transmission shaft (24), the first small gear (26) is meshed with the first large gear (25), a first belt pulley (27) and a second belt pulley (28) are arranged in the driven cavity (23), the first belt pulley (27) is sleeved on the transmission shaft (24), the second belt pulley (28) is sleeved on the crushing shaft (16), the first belt pulley (27) is in transmission connection with the second belt pulley (28) through a belt (58), and the top of the motor (1) is provided with a spindle (35) which is connected with the spindle (35);
the crushing mechanism further comprises an outer guard plate (29) and an inner guard plate (30), wherein the inner guard plate (30) is fixedly sleeved on the main shaft (11), the outer guard plate (29) is in a circular ring shape, the inner wall of the outer guard plate (29) is fixed on the screening box body (1), the inner guard plate (30) and the outer guard plate (29) are both positioned between the first gear (20) and the crank (19), the driven shaft (18) is in contact with the inner wall of the outer guard plate (29) and the outer wall of the inner guard plate (30), an arc-shaped sealing plate (31) is arranged between two adjacent driven shafts (18), the arc-shaped sealing plates (31) and the main shaft (11) are concentrically arranged, semicircular holes (32) are formed at two ends of the arc-shaped sealing plates (31), the diameter of the semicircular holes (32) is equal to the diameter of the driven shaft (18), the two adjacent semicircular holes (32) form complete circular holes, the driven shaft (18) is adapted to the circular holes, the inner wall of the driven shaft (18) is in contact with the outer wall of the outer guard plate (31), and the arc-shaped sealing plates (33) are both fixedly provided with the arc-shaped sliding grooves (33) and are respectively arranged on the inner wall (33) of the outer guard plate (33);
the combined screening net comprises a plurality of screening components which are arranged in contact along the length direction of the rectangular mounting frame (5), the screening components comprise two transverse mounting plates (36) and two longitudinal mounting plates (37), the transverse mounting plates (36) are arranged in an up-down staggered mode, a plurality of longitudinal screening wires (38) are uniformly distributed between the two transverse mounting plates (36) along the length direction of the transverse mounting plates, two ends of the longitudinal screening wires (38) are respectively connected to the bottoms of the two transverse mounting plates (36), one transverse mounting plate (36) is fixedly connected with the rectangular mounting frame (5), the other transverse mounting plate (36) has the freedom degree of moving along the length direction of the longitudinal screening wires (38), a plurality of transverse screening wires (39) are uniformly distributed between the two longitudinal mounting plates (37) along the length direction of the longitudinal screening wires, two ends of the transverse screening wires (39) are respectively connected to the tops of the two longitudinal mounting plates (37), one longitudinal mounting plate (37) is fixedly connected with the rectangular mounting frame (5), the other longitudinal mounting plate (37) has the same size of the longitudinal screening wires (39), and the partial screening wires (39) move along the length direction of the longitudinal screening frames (39) gradually form a plurality of the partial screening frames, and the partial screening frames (39) of the partial screening frames are gradually increased along the length directions of the longitudinal screening wires;
the movable transverse mounting plate (36) is connected with a longitudinal push rod (40), a longitudinal push plate (41) is arranged on the outer side of the screening box body (1), the longitudinal push rod (40) movably penetrates through the rectangular mounting frame (5) and the screening box body (1) to be connected with the longitudinal push plate (41), a longitudinal air cylinder (42) is arranged on the side wall of the screening box body (1), and a telescopic shaft of the longitudinal air cylinder (42) is connected with the longitudinal push plate (41);
the rectangular mounting frame (5) is provided with inner cavities at two ends of the longitudinal mounting plate (37), connecting plates (43) are fixed at two ends of the longitudinal mounting plate (37) in a movable state, transverse push rods (44) are movably arranged in the inner cavities, the connecting plates (43) are fixedly connected with the transverse push rods (44), transverse air cylinders (45) are arranged on the outer sides of the screening box bodies (1), transverse push plates (61) are connected with telescopic shafts of the transverse air cylinders (45), and the transverse push rods (44) movably penetrate through the rectangular mounting frame (5) and the screening box bodies (1) to be connected with the transverse push plates (61);
the screening box comprises a screening box body (1), wherein a rectangular frame table (48) is fixed on the inner wall of the screening box body (1), a plurality of springs (49) are uniformly distributed on the circumference of the rectangular frame table (48), a screening screen plate (4) is located above the rectangular frame table (48), two ends of each spring (49) are respectively connected with the rectangular frame table (48) and the screening screen plate (4), two ends of each screening screen plate (4) are connected with a wire pulling mechanism, each wire pulling mechanism comprises a wire pulling motor (50) and a wire winding disc (51), the wire pulling motor (50) is installed on the outer side wall of the screening box body (1), the wire winding disc (51) is wound with a wire pulling motor (52), the outer wall and the inner wall of the screening box body (1) are respectively provided with a wire guide wheel (53) in a rotating mode, and the wire pulling motor (50) bypasses the wire guide wheels (53) to connect the screening screen plate (4);
the utility model discloses a screening screen plate, including rectangle frame platform (48), screening screen plate (4), rectangle frame platform (48), spring (49) are located between the inner wall of flexible frame and screening box (1), flexible frame includes fixed frame (54) and movable frame (55), the one end of fixed frame (54) is connected rectangle frame platform (48), the other end is slided and is worn to be equipped with movable frame (55), movable frame (55) are kept away from the one end of fixed frame (54) is connected screening screen plate (4).
2. An air-flow sand and stone screening device according to claim 1, characterized in that the side wall of the screening box (1) is provided with a feed hopper (56), and the bottom of the screening box (1) is provided with a plurality of discharge ports (57) along the material screening flow direction of the second screening mechanism (3).
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| CN202311115464.2A CN116809395B (en) | 2023-08-31 | 2023-08-31 | Air-flow sand and stone screening device |
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|---|---|---|---|
| CN202311115464.2A CN116809395B (en) | 2023-08-31 | 2023-08-31 | Air-flow sand and stone screening device |
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| CN116809395A CN116809395A (en) | 2023-09-29 |
| CN116809395B true CN116809395B (en) | 2023-11-07 |
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| CN116809395A (en) | 2023-09-29 |
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