CN214975754U - Winnowing equipment and machine-made sand production line - Google Patents

Abstract

The utility model provides a winnowing equipment and machine-made sand production line. The winnowing equipment includes: the device comprises a shell, wherein an induced draft opening, a feed inlet, a first discharge opening and a second discharge opening are formed in the shell; the scattering assembly is arranged in the shell; the grading component is arranged in the shell and is arranged at intervals with the scattering component; and the baffle is connected with the shell and arranged at the first discharge port. The utility model provides a winnowing equipment is used for breaing up the coarse sand that gets into, and can be according to the quality difference between the fine sand that forms after breaing up and the farine, make the farine blow out by wind from the first discharge gate that is located casing upper portion, make the fine sand discharge from the second discharge gate under gravity and inertial action, through setting up hierarchical subassembly and baffle matched with structure, carry out dual screening to fine sand and farine, the possibility that the fine sand is blown out from first discharge gate department has been reduced, the fine sand of equipment and the separation effect of farine have been improved, and the selection powder quality has been improved.

Description

Winnowing equipment and machine-made sand production line

Technical Field

The utility model relates to a production machinery technical field particularly, relates to a winnowing equipment and mechanism sand production line including above-mentioned winnowing equipment.

Background

At present, in the powder selecting process of machine-made sand, the machine-made sand (coarse sand) enters from a feeding hole and then is scattered by a scattering plate to form fine powder and fine sand, the fine powder with smaller particle size is discharged from one discharging hole and the fine sand with larger particle size is discharged from the other discharging hole under the action of wind power, so that the separation of materials with different particle sizes is realized, and the powder selecting effect is achieved. However, the air induction amount of the equipment is mainly controlled by a fan arranged at an air induction port, and in the case of large air amount, screened fine sand can be brought out together with fine powder along with high-speed air, so that the powder selection effect is influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve at least one of the above technical problems, an object of the present invention is to provide a winnowing device.

Another object of the utility model is to provide a machine-made sand production line including above-mentioned air separation equipment.

In order to achieve the above object, an embodiment of the present invention according to the first aspect provides a winnowing device, including: the device comprises a shell, wherein an induced draft opening, a feed inlet, a first discharge opening and a second discharge opening are formed in the shell; the scattering assembly is arranged in the shell; the grading component is arranged in the shell and is arranged at intervals with the scattering component; the baffle is connected with the shell and arranged at the first discharge port; wherein, break up subassembly and hierarchical subassembly and divide into the inner space of casing adjacent intake area in proper order, break up the district, the selection by winnowing district, the both sides of breaking up the subassembly are located respectively to intake area and break up the district, break up the district and locate hierarchical subassembly's both sides respectively with the selection by winnowing district, the intake area is located to the induced air mouth, the top in breaking up the district is located to the feed inlet, the bottom in breaking up the district is located to the second discharge gate, one side that hierarchical subassembly was kept away from in the selection by winnowing district is located to first discharge gate to the setting is in the top position of second discharge gate.

The winnowing device provided by the embodiment comprises a shell, a scattering component, a grading component and a baffle plate. Wherein, be equipped with induced air mouth, feed inlet, first discharge gate and second discharge gate on the casing, break up subassembly, hierarchical subassembly and set up in the casing, the baffle sets up in first discharge gate department. When the winnowing equipment works, the induced air port is used for air inlet, materials (coarse sand) enter the shell from the feed port and fall on the scattering assembly under the action of gravity, and the scattering assembly is used for scattering the coarse sand due to certain impact force to form fine sand finer than the coarse sand and fine powder finer than the fine sand. Under the action of wind power, fine sand and fine powder are blown to the grading component, the fine powder can pass through the grading component under the action of wind power and is blown out from the first discharge hole due to light weight, and the fine sand can collide with the grading component under the action of inertia due to heavy weight and then is discharged from the second discharge hole through rebound. In some cases, the air quantity entering the induced draft opening is large, and a large wind speed gradient exists in a scattering area between the scattering assembly and the grading assembly, so that part of fine sand can pass through the grading assembly under the action of large wind force and is blown out from the first discharge opening. Simultaneously, the baffle is arranged at the first discharge hole, the first discharge hole is far away from the induced air port relative to the grading component, the wind power is weakened, the baffle can intercept fine sand, the fine sand is enabled to be collided with the baffle under the inertia effect, fine powder is blown out from a gap between the two baffles under the wind power effect, and therefore the fine sand and the fine powder are subjected to double screening through the cooperation of the baffle and the grading component, the possibility that the fine sand is blown out from the first discharge hole is reduced, the separation effect of the fine sand and the fine powder of the equipment is improved, the fine powder meeting the requirement on particle size can be screened through the equipment, and the powder selection quality is improved.

It can be understood that the size of the particle size of the fine powder blown out from the first discharge port can be influenced by controlling the air volume. When the air quantity is large, the wind power can drive particles with large mass to move, and when the air quantity is small, the wind power can drive particles with small mass to move. Therefore, the particle size of the fine powder blown out from the first discharge port can be controlled by controlling the air volume. The particle size of the fine powder and the fine sand is set according to the actual production situation, for example, in the concrete field, the fine powder refers to particles with the particle size of less than or equal to 0.075mm in machine-made sand, and the fine sand refers to particles with the particle size of more than that of the fine powder.

Additionally, the utility model provides an air classification equipment among the above-mentioned technical scheme can also have following additional technical characterstic:

in the above technical solution, the air separation equipment further comprises an adjusting and executing device; the adjusting and executing device is arranged on the shell and is connected with the baffle; the baffle is connected with the casing rotation through adjusting final controlling element, and the baffle can be rotatory for the casing to the draught area of adjustment first discharge gate.

In the above technical solution, the adjusting and executing device includes a link mechanism, and the link mechanism is respectively connected with the baffles and used for controlling the baffles to rotate synchronously.

In the technical scheme, the provided winnowing equipment moves by controlling the connecting rod mechanism to drive the baffle to move simultaneously, so that the screening effect of the baffle is improved.

In any of the above embodiments, the baffle plates are arranged in a plurality, the baffle plates are sequentially arranged at intervals, and the baffle plates are respectively connected with the link mechanism.

In the above embodiment, the air separation device provided in this embodiment is provided with a plurality of baffles, and the plurality of baffles are driven to simultaneously move by controlling the movement of the link mechanism. The baffle plate has the advantages that the baffle plate is beneficial to enabling the rotation angle and the rotation direction of each baffle plate to be consistent, so that the gap between any two adjacent baffle plates is consistent, the air quantity at each position of the first discharge hole is uniform, the air speed gradient of the first discharge hole is reduced, fine powder and fine sand are uniformly distributed and flow to each gap, and the screening effect of the baffle plates is improved.

In any of the above embodiments, the break up zone and/or the air separation zone is provided with wear plates, which are connected to the housing.

In any of the above embodiments, the casing is provided with a viewing port, and the viewing port is arranged at a position on the casing corresponding to the scattering area; and/or the shell is provided with an observation port, and the observation port is arranged at the position corresponding to the wind selection area on the shell.

In any of the above embodiments, the breaking assembly includes a plurality of bending pieces, the bending pieces are arranged in a step shape, and two adjacent bending pieces are arranged at intervals; and/or the grading component comprises a plurality of grading plates which are arranged in a ladder shape, and two adjacent grading plates are arranged at intervals.

In any of the above embodiments, the number of the induced draft openings is plural, and the directions of the plural induced draft openings are different from each other; and/or a shutter is arranged at the air inducing port.

An embodiment of the second aspect technical scheme of the utility model provides a mechanism sand production line, including the winnowing device in any embodiment of the first aspect technical scheme.

The utility model discloses the mechanism sand production line that second aspect technical scheme provided, because of the winnowing device in any embodiment in the first aspect technical scheme, therefore have all beneficial effects that any embodiment of the aforesaid had, no longer describe herein.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a first machine-made sand dust separation structure in the related art;

fig. 2 is a schematic view of a second machine-made sand dust separation structure in the related art;

fig. 3 is a schematic view of a third machine-made sand dust separation structure in the related art;

fig. 4 is a schematic view of a fourth machine-made sand dust separation structure in the related art;

fig. 5 is a schematic view of the internal structure of the air separation device according to some embodiments of the present invention;

fig. 6 is a schematic view of the external structure of the air separation device according to some embodiments of the present invention;

fig. 7 is a schematic view of the internal structure of the air separation apparatus according to some embodiments of the present invention;

fig. 8 is a schematic structural view of a machine-made sand production line in some embodiments of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

100' a first machine-made sand powder selecting structure; 200' a second machine-made sand powder selecting structure; 300 'third machine-made sand powder selecting structure 300'; 400' fourth mechanism sand selection powder structure.

Wherein, the correspondence between the reference numbers and the part names in fig. 5 to 8 is:

100 winnowing equipment; 10 a shell; 11 air inducing port; 111 a louver; 12 feeding ports; 13 a first discharge port; 14 a second discharge port; 15, an access hole; 151 access door; 16 viewing ports; 101, an air inlet area; 102 a break-up zone; 103 wind selection area; 20 breaking up the components; 21 bending pieces; 22 wear plates; 30 grading components; 31 a guide frame; 32 wedge blocks; 33 locking screws; 34 a grading plate; 35 fixing grooves; 40 baffle plates; 41 adjusting the actuating device; 42 a link mechanism; 43 operating a handle; 200 machine-made sand production line.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the related art, as shown in fig. 1, a first machine-made sand powder selecting structure 100 'is disclosed, and machine-made sand enters from a feeding hole of the first machine-made sand powder selecting structure 100' and is scattered by a scattering plate to form a uniform material curtain. As shown in fig. 2, a second machine-made sand dust separation structure 200 'is also disclosed, and under the action of wind, powder smaller than 0.075mm is discharged from an induced draft of the second machine-made sand dust separation structure 200'. As shown in fig. 3, a third machine-made sand powder selecting structure 300 'is also disclosed, and coarse sand passes through a discharge hole of the third machine-made sand powder selecting structure 300'. As shown in fig. 4, a fourth machine-made sand dust selecting structure 400' is also disclosed.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The winnowing device 100 and the machine-made sand production line 200 in some embodiments of the present invention are described below with reference to fig. 5 to 8.

Some embodiments of the present application provide an air classification apparatus 100.

Example 1

As shown in fig. 5, the air classification apparatus 100 provided in the present embodiment includes a housing 10, a scattering assembly 20, a classifying assembly 30, and a baffle 40. Wherein, the shell 10 is provided with an induced draft opening 11, a feed inlet 12, a first discharge opening 13 and a second discharge opening 14.

Specifically, the air inducing opening 11 is disposed corresponding to the first discharging opening 13, so that the material entering the housing 10 can move from one side of the air inducing opening 11 to one side of the first discharging opening 13 under the action of the wind. The breaking up component 20, the grading component 30 and the baffle 40 are sequentially arranged inside the shell 10 at intervals along the direction from the air inducing port 11 to the first discharge port 13, so that materials can sequentially pass through the breaking up component 20, the grading component 30 and the baffle 40.

The scattering component 20 and the grading component 30 are arranged in the shell 10, the inner space of the shell 10 is divided into an air inlet area 101, a scattering area 102 and a winnowing area 103 which are adjacent to each other, the scattering area 102 is respectively communicated with the air inlet area 101 and the winnowing area 103, the feed inlet 12 is positioned above the scattering component 20, materials enter the shell 10 from the feed inlet 12, certain impact force is generated under the action of gravity, the materials impact on the scattering component 20 and are scattered into fine sand and fine powder which is finer than the fine sand, the fine sand is blown to the grading component 30 under the action of wind force, the fine powder is lighter in weight, the fine sand can pass through the grading component 30 under the action of wind force and is blown out from the first discharge port 13, the fine sand can impact with the grading component 30 under the action of inertia due to the heavier weight, and then is discharged from the second discharge port 14 arranged at the bottom of the shell 10 through rebound. In some cases, part of the fine sand may also pass through the classifying assembly 30, and by providing the baffle 40 at the first discharge port 13, the fine sand collides with the baffle 40 under the inertia effect, and is thus blocked and discharged from the second discharge port 14, and the fine sand can pass through the gap between two adjacent baffles 40 under the wind force, and is blown out from the first discharge port 13.

Thus, according to the winnowing device 100 provided by the embodiment, the fine sand and the fine powder are dually screened by arranging the structure that the grading component 30 and the baffle 40 are matched according to the quality difference between the fine sand and the fine powder formed after scattering, the possibility that the fine sand is blown out from the first discharge hole 13 is reduced, the separation effect of the fine sand and the fine powder of the device is improved, and the powder selection quality is improved.

Wherein the winnowing device 100 is a powder concentrator or the like.

In some embodiments, such as in the concrete field, a fine powder refers to particles in machine-made sand having a particle size of less than 0.075 mm. In other embodiments, the air volume can be adjusted according to actual production requirements, so that fine powder with other particle sizes can be screened out.

Example 2

On the basis of embodiment 1, as shown in fig. 6, the air classification apparatus 100 in this embodiment further includes an adjusting actuator 41.

Specifically, the adjustment actuator 41 is disposed on the housing 10 and connected to the baffle 40; the baffle 40 is rotatably connected with the housing 10 through an adjusting actuator 41, and the baffle 40 can rotate relative to the housing 10 to adjust the ventilation area of the first discharge hole 13.

The air classification apparatus 100 provided by the embodiment can control the rotation of the baffle 40 by arranging the adjusting actuator 41, so that the baffle 40 can rotate relative to the housing 10, the area of the baffle 40 on the plane perpendicular to the direction of the first discharge hole 13 can be changed by changing the inclination angle, and the size of the gap between the two connected baffles 40 is changed, so that the effective passing area of the first discharge hole 13 can be adjusted.

Wherein, an inclined upward channel is formed between the two baffles 40 for blowing out the fine powder with wind.

In addition, the effective passing area of the first discharge port 13 is reduced, so that not only the fine sand passing through the first discharge port 13 is reduced, but also the passing air volume is reduced, and therefore, the effect of controlling the air volume can be achieved, and under the condition that the air volume is small, the inertia effect on the fine sand is larger than the wind effect, the fine sand moves downwards, contacts and collides with the baffle 40, is blocked in the shell 10, and slides to the second discharge port 14 along the side wall of the shell 10 to be discharged, and the separation effect of the fine sand and the fine sand is further improved.

Further, as shown in fig. 5 and 6, the adjusting actuator 41 includes link mechanisms 42, and the link mechanisms 42 are respectively connected to the shutters 40 for connecting and controlling the shutters 40 to rotate synchronously.

The winnowing device 100 provided by the embodiment drives the baffle 40 to move simultaneously by controlling the movement of the link mechanism 42, so as to improve the screening effect of the baffle 40.

Further, the baffle 40 is provided in plurality, the plurality of baffles 40 are sequentially provided at intervals from each other, and the plurality of baffles 40 are respectively connected to the link mechanism 42.

The winnowing device 100 that this embodiment provided is equipped with 3 baffles 40, link mechanism 42 and includes 3 connecting rods, and 3 connecting rods and 3 baffles 40 one-to-one link to each other, through the action of control link mechanism 42, drive 3 connecting rods and move simultaneously to drive 3 baffles 40 and move simultaneously. The baffle plate is beneficial to enabling the rotation angle and the rotation direction of each baffle plate 40 to be consistent, so that the gap between any two adjacent baffle plates 40 is consistent, the air quantity at each position of the first discharge hole 13 is uniform, the air speed gradient of the first discharge hole 13 is reduced, fine powder and fine sand are uniformly distributed and flow to each gap, and the screening effect of the baffle plates 40 is improved.

In other embodiments, the number of baffles 40 is 2, 4, 5, etc., and the number of links of the linkage 42 is the same as the number of baffles 40.

Further, as shown in fig. 6, the adjustment actuator 41 further includes an operating handle 43, and the operating handle 43 is connected to the link mechanism 42 for controlling the link mechanism 42 to operate.

Example 3

On the basis of embodiment 1 or embodiment 2, as shown in fig. 6 and 7, the grading component 30 is detachably connected with the housing 10 through a locking screw 33.

The classification component 30 of the air classification device 100 provided by the embodiment can be detached, the repair and replacement of the classification component 30 can be facilitated by detaching the classification component 30, and meanwhile, classification components 30 of different specifications can be arranged in the shell 10 so as to be suitable for screening fine powder with different particle sizes.

In addition, the connection is realized through the locking screw 33, so that the assembly and disassembly are simple. The number of the locking screws 33 is plural, and two of the locking screws 33 are provided at both ends of the gradation assembly 30 in the length direction thereof. The connection stability and the use stability of the grading assembly 30 can be improved by increasing the number of the locking screws 33.

Further, as shown in fig. 6 and 7, the housing 10 is provided with an access opening 15, and an access door 151 is covered on the access opening 15. The access hole 15 is arranged above the grading component 30, and the grading component 30 can be integrally lifted out through the access hole 15, so that the overhaul is more convenient.

Wherein, the access door 151 is detachably connected or rotatably connected with the housing 10.

Further, as shown in fig. 7, a guide frame 31 is provided in the housing 10, and the shape of the guide frame 31 is adapted to the shape of the grading component 30 for erecting the grading component 30.

The installation of the classifying unit 30 is facilitated by providing the guide frame 31, and the classifying unit 30 is disposed at a set position in the housing 10.

Further, as shown in fig. 7, a fixing groove 35 is provided in the housing 10, and after the classifying unit 30 is mounted on the guide frame 31, the wedge 32 is inserted into the fixing groove 35, so that the wedge 32 presses the classifying unit 30, thereby limiting the position of the classifying unit 30. To further improve the stability of the use of the grading component 30.

In some embodiments, the number of the fixing grooves 35 is plural, and the number of the wedges 32 is the same as the number of the fixing grooves 35.

Example 4

In addition to any of the above embodiments, as shown in fig. 7, the wear plate 22 is disposed on the housing 10. The wear plate 22 can reduce the wear of the casing 10 during the movement of the material (fine sand, fine powder, etc.) in the casing 10, and prolong the service life of the casing 10.

In some embodiments, the wear plate 22 is disposed in the break-up zone 102.

In some embodiments, the wear plate 22 is disposed within the air classification zone 103.

In some embodiments, the wear plate 22 is disposed on the grading assembly 30, or the grading assembly 30 is made of a wear resistant material, to improve the wear resistance of the grading assembly 30.

In some embodiments, a wear plate 22 is disposed on the break up assembly 20, or the break up assembly 20 is made of a wear resistant material, to improve the wear resistance of the break up assembly 20.

Example 5

In addition to any of the above embodiments, as shown in fig. 6 and 7, the housing 10 is provided with the observation port 16, the observation port 16 is provided at a position corresponding to the scattering area 102 on the housing 10, and the scattering area 102 can be observed through the observation port 16.

In addition to any of the above embodiments, as shown in fig. 6 and 7, the casing 10 is provided with the observation port 16, the observation port 16 is provided at a position corresponding to the wind selection area 103 on the casing 10, and the condition of the wind selection area 103 can be observed through the observation port 16.

Since the materials (fine sand, fine powder, etc.) are easy to wear the components (the grading component 30, the scattering component 20, etc.) in the casing 10 during the movement of the materials in the casing 10, the components need to be replaced and maintained frequently, and the operation conditions of the components in the casing 10 can be observed through the observation port 16.

Example 6

On the basis of any of the above embodiments, as shown in fig. 7, the breaking assembly 20 includes a plurality of bending pieces 21, the bending pieces 21 are arranged in a step shape, and two adjacent bending pieces 21 are arranged at intervals.

The subassembly 20 of breaing up that this embodiment provided sets up in casing 10 along the direction slope of last rear side to lower front side, through setting up a plurality of pieces of bending 21 that are the echelonment and distribute, increased material and the contact probability and the number of times of breaing up subassembly 20, make the material can drop on the step of breaing up subassembly 20, and through striking many times, in order to be broken up into the granule that the particle diameter is littleer, thereby can pass through the air current of induced air mouth 11 through the clearance between two adjacent pieces of bending 21, blow material (fine sand, farine etc.) to hierarchical subassembly 30.

Wherein, the bending piece 21 can be an L-shaped plate, a V-shaped plate, an arc plate, etc.

In some embodiments, the plurality of bending members 21 are arranged at equal intervals.

On the basis of any of the above embodiments, as shown in fig. 7, the grading component 30 includes a plurality of grading plates 34, the grading plates 34 are arranged in a step shape, and two adjacent grading plates 34 are arranged at intervals.

The grading component 30 provided by the embodiment is obliquely arranged in the housing 10 along the direction from the upper back side to the lower front side, so that the length of the grading component 30 is increased through the oblique arrangement, and the air separation efficiency is improved. Meanwhile, an air duct is formed between two adjacent classifying plates 34 for fine powder to pass through, the classifying plates 34 extend along the direction from the lower back side to the upper front side, and the falling of the fine powder is slowed down by the obliquely upward arrangement, so that the air separation time is prolonged, and the air separation effect is further enhanced.

In some embodiments, the plurality of classification plates 34 are equally spaced.

Example 7

On the basis of any of the above embodiments, as shown in fig. 7, the number of the air inducing ports 11 is two, wherein one air inducing port 11 is arranged on the top wall of the housing 10, and the other air inducing port is arranged on the side wall of the housing 10.

In the present embodiment, by providing a plurality of induced draft openings 11, the amount of air entering the casing 10 can be increased accordingly. Meanwhile, the air inlets 11 in different directions are arranged, so that the air direction in the shell 10 can be adjusted to adjust the flow direction of the materials, on one hand, the materials can be in full contact with the scattering component 20 conveniently, on the other hand, the materials can be distributed uniformly and flow to the grading component 30 conveniently, and the materials can be dispersed more uniformly in the scattering area 102 and the wind selection area 103.

In some embodiments, as shown in fig. 7, a louver 111 is disposed at the induced air opening 11. The amount of air supplied at the induced draft opening 11 can be controlled by controlling the louver 111 to adjust the direction of the air in the casing 10.

In the case of the observation opening 16, the direction of flow of the material can be observed through the observation opening 16, and the louvers 111 can be controlled accordingly, so that the air classification device 100 has a better air classification effect.

Some embodiments of the present application provide a manufactured sand production line 200.

Example 8

As shown in fig. 8, the machine-made sand production line 200 in this embodiment includes the winnowing device 100 in any of the above embodiments.

The machine-made sand production line 200 provided in this embodiment includes the winnowing device 100 in any of the above embodiments, so that all the advantages of any of the above embodiments are provided, and no further description is provided herein.

In some embodiments, the machine-made sand production line 200 includes a crushing device and the air classification apparatus 100 of any of the embodiments described above.

The crushing device is used for crushing the materials for the first time, a discharge port of the crushing device is connected with a feed port 12 of the winnowing device 100, and the materials after the crushing for the first time enter the winnowing device 100.

In some embodiments, the machine-made sand production line 200 includes a transport device and the air classification apparatus 100 of any of the embodiments described above.

Wherein, the transporting device is connected with the second discharge port 14 of the air separation device 100 and the feed port 12 of the air separation device 100, and is used for enabling the materials discharged from the second discharge port 14 to pass through the air separation device 100 again for secondary screening.

The winnowing device 100 and the machine-made sand production line 200 provided by the present application are described below in some specific embodiments.

Most structural style that adopts of mechanism sand selection powder machine makes mechanism sand get into the back from feed inlet 12 and is broken up by the board of breaing up, forms even material curtain, and under the wind-force effect, the fine powder that is less than 0.075mm is discharged from the fine powder discharge gate (being first discharge gate 13), and fine sand and grit pass through from second discharge gate 14 to reach the effect of selection powder. However, the induced air volume of the existing air separation equipment 100 such as the powder separator is mainly controlled by the variable frequency of the fan arranged at the induced air port 11, but the air volume is often large, so that fine sand contained in the screened fine powder is easily caused, the maintenance is inconvenient, and the fine sand is not easily removed and replaced if a worn part exists.

Therefore, a specific embodiment of the application provides a winnowing device 100 for machine-made sand, the winnowing device 100 comprises a shell 10, a feed inlet 12 is arranged at the top of the shell 10, a second discharge outlet 14 is arranged at the bottom of the shell 10, a breaking assembly 20 is arranged at one side of the shell 10, the breaking assembly 20 comprises a plurality of bent pieces 21 which are uniformly and obliquely arranged, and a ventilation channel is formed between any two adjacent bent pieces 21; two air inlets 11 are arranged obliquely above one side of the scattering assembly 20, and shutters 111 are arranged at the air inlets 11; the other side of the scattering assembly 20 is provided with a grading assembly 30 and a first discharge hole 13 in sequence.

Further, an access opening 15 is formed above the grading component 30, and the access opening 15 is fixedly sealed by an access door 151 through bolts.

Further, the grading component 30 comprises a plurality of grading plates 34 which are uniformly arranged, and a screening channel is formed between any two adjacent grading plates 34;

furthermore, a guide piece (and a guide frame 31) is arranged on the lower rear side of the grading component 30, a wedge block 32 clamping structure is arranged on the oblique lower side of the grading component 30, and the front side and the rear side are fixed through screws.

Furthermore, a plurality of baffles 40 are arranged at the first discharge port 13, the baffles 40 can be driven to rotate by an adjusting actuator 41, and the adjusting actuator 41 is a link mechanism 42 composed of an electric push rod or other actuators.

Further, a dust remover or other similar functional equipment is connected to the induced draft opening 11.

The winnowing device 100 provided in this embodiment operates on the following principle:

before the machine-made sand (material) enters the shell 10, dust removing equipment or other similar equipment connected with one end of the induced draft opening 11 works to induce air, so that the air enters the shell 10 from the induced draft opening 11, passes through the shutter 111, the scattering assembly 20 and the grading assembly 30, and forms an air field in the shell 10.

After the machine-made sand (material) enters the shell 10 from the feeding hole 12, the machine-made sand (material) falls downwards on the stepped scattering assembly 20 due to the action of gravity to generate an impact force, the impact force scatters sand clusters in the machine-made sand to form fine sand and fine powder, and the machine-made sand can be uniformly dispersed in the falling process.

Under the action of wind force, fine powder with smaller particle size in the machine-made sand is directly discharged from the first discharge hole 13 along with wind; the fine sand with larger grain size can collide with the grading component 30 when passing through the grading component 30 area along with wind due to large inertia, then rebound, impact and rebound, and finally is discharged from the second discharge hole 14; meanwhile, the fine sand with large particle size continuously impacts, rebounds and removes powder on the breaking-up assembly 20, and is directly discharged from the second discharge hole 14.

In some embodiments, the underside of the grading component 30 is provided with a guide strip (i.e., a guide bracket 31) for guiding and positioning during removal and installation, and the obliquely upper side of the grading component 30 is clamped by a wedge 32.

In some embodiments, the housing 10 is provided with a locking screw 33, and the grading component 30 is loosely fixed with the housing 10 through the locking screw 33, so as to facilitate maintenance and replacement. A locking pad is arranged between the locking screw 33 and the housing 10.

In some embodiments, the access door 151 is removed and the staging assembly 30 can be hoisted out in its entirety.

In some embodiments, wear plates 22 are provided in the winnowing region 103 and the break-up region 102 in the housing 10 to increase the service life of the winnowing apparatus 100.

In some embodiments, the first discharge port 13 is provided with a plurality of baffles 40, which can be driven by an adjusting actuator to rotate, so as to adjust the angle of the baffles 40, reduce the effective area of the first discharge port 13, and further screen coarse particles by impacting particles (such as fine sand) with relatively large particle size with the baffles 40 due to inertia.

In some embodiments, the adjustment actuator is a linkage 42 driven by an electric push rod or an air cylinder, or the like.

The winnowing device 100 and the machine-made sand production line 200 provided with the winnowing device 100 provided by the embodiment have at least the following beneficial effects: (1) the integral detachable grading plate 34 is arranged, so that a plurality of grading plates 34 can be removed in a unified manner, and the processing and the integral replacement of the grading component are facilitated; (2) the detachable grading component 30 or the plurality of grading components 30 are clamped by the wedge 32 and the screw, so that the arrangement is convenient, and the maintenance and the disassembly are easy; (3) first discharge gate 13 department sets up automatically regulated's baffle 40, and baffle 40 and grading component 30 dual-purpose screening coarse grain can adjust the amount of wind through rotating baffle 40, further screens the coarse grain.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An air classification apparatus, comprising:

the device comprises a shell, wherein an air inducing port, a feeding port, a first discharging port and a second discharging port are formed in the shell;

the scattering assembly is arranged in the shell;

the grading component is arranged in the shell and is arranged at intervals with the scattering component;

the baffle is connected with the shell and arranged at the first discharge port;

wherein, break up the subassembly with hierarchical subassembly will the inner space of casing divide into consecutive adjacent intake area, break up the district, selection by winnowing district, intake area with break up the district and locate respectively break up the both sides of subassembly, break up the district with selection by winnowing district locates respectively hierarchical subassembly's both sides, the induced air mouth is located intake area, the feed inlet is located break up the top in district, the second discharge gate is located break up the bottom in district, first discharge gate is located selection by winnowing district keeps away from hierarchical subassembly's one side, and sets up the top position of second discharge gate.

2. The air classification apparatus according to claim 1, further comprising an adjustment actuator;

the adjusting and executing device is arranged on the shell and is connected with the baffle;

the baffle passes through adjust final controlling element with the casing rotates and is connected, the baffle can rotate for the casing to the adjustment the draught area of first discharge gate.

3. The air classification apparatus according to claim 2,

the adjusting and executing device comprises a connecting rod mechanism, and the connecting rod mechanism is respectively connected with the baffle and used for controlling the baffle to synchronously rotate.

4. The winnowing apparatus of claim 3 wherein said baffle is provided in a plurality, a plurality of said baffles being spaced one from the other in sequence, and a plurality of said baffles being connected to each of said linkages.

5. The air classification apparatus as claimed in claim 4,

the shell is provided with an access hole, the access hole is arranged above the grading component, an access door is arranged at the access hole, and the access door is connected with the shell;

a guide frame is arranged in the shell, the shape of the guide frame is matched with that of the grading component, and the grading component is erected on the guide frame;

a detachably connected wedge block is arranged in the shell, is arranged above the grading component and is in abutting fit with the grading component;

the shell is provided with a locking screw in a penetrating mode, and the grading component is connected with the shell through the locking screw.

6. The air classification apparatus according to any one of claims 1 to 3,

the scattering area and/or the winnowing area are/is provided with wear-resistant plates, and the wear-resistant plates are connected with the shell.

7. The air classification apparatus according to any one of claims 1 to 3,

the shell is provided with an observation port, and the observation port is arranged at a position on the shell corresponding to the scattering area; and/or

The shell is provided with an observation port, and the observation port is arranged at a position, corresponding to the wind separation area, on the shell.

8. The air classification apparatus according to any one of claims 1 to 3,

the scattering assembly comprises a plurality of bending pieces, the bending pieces are distributed in a step shape, and two adjacent bending pieces are arranged at intervals; and/or

The grading component comprises a plurality of grading plates, the grading plates are arranged in a ladder shape, and two adjacent grading plates are arranged at intervals.

9. The air classification apparatus according to any one of claims 1 to 3,

the number of the induced draft openings is multiple, and the directions of the induced draft openings are different from each other; and/or

And a shutter is arranged at the air inducing port.

10. A machine-made sand production line, comprising:

an air classification apparatus as claimed in any one of claims 1 to 9.

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