CN217165207U

CN217165207U - Device for efficiently screening sand

Info

Publication number: CN217165207U
Application number: CN202220318416.8U
Authority: CN
Inventors: 刘钊; 吴凤秀; 李文祥; 陆通; 孔宪勇; 李征宇; 沈杰; 谢炜; 王鑫; 李佳俊
Original assignee: Wuhan Construction Engineering Co Ltd
Current assignee: Wuhan Construction Engineering Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-08-12
Anticipated expiration: 2032-02-17

Abstract

The utility model provides a device of high-efficient screening grit, including sieve tray and many supporting cylinders, all install the motor in the every supporting cylinder, still set firmly the ring gear on the every supporting cylinder inner wall, be fixed with the driving gear on the motor output shaft, the meshing is connected with driven gear between driving gear and the ring gear, has linked firmly the driven shaft on the driven gear, driven shaft terminal top and sieve tray bottom fixed connection. By adopting the device, on one hand, the screening efficiency can be improved, the sand with smaller particle size directly leaks out from the lower part of the screen disc after screening, and the coarse particles left in the screen disc after screening are increased in rotating speed by adopting a variable frequency speed regulating motor, and are discharged from a slag discharge port; on the other hand, the motor dress is in the supporting cylinder, and device simple structure, the supporting cylinder both supported the sieve dish, protected the motor again, prevented that the dust from falling into inside the motor, guaranteed motor normal operating, improved whole screening plant's reliability, the device screening grit is efficient, operation labour saving and time saving.

Description

Device for efficiently screening sand

Technical Field

The utility model belongs to the technical field of the construction material screening, concretely relates to device of high-efficient screening grit.

Background

Concrete is a common construction material in the field of construction, and when the concrete is manufactured and processed, in order to ensure the quality of the concrete, the proportion of the sand grain diameter in the concrete raw material needs to be strictly controlled, so that the production quality of the concrete is ensured. Therefore, after the raw materials are prepared, workers need to sample and investigate the sand in the raw materials to ensure that the proportion of the sand with different particle sizes meets the concrete production standard. It follows that the quality of the screening of the sand is particularly important.

For example, publication numbers are: the patent document "CN 113333295A" discloses a building sandstone screening device and a method for using the same. Including the mounting bracket, the mounting bracket comprises the portal frame that two sets of symmetries set up and the crossbeam that connects two sets of portal frames, and is two sets of the upper end middle part of portal frame is equipped with first pivot hole, be equipped with the first pivot of being connected with it rotation in the first pivot hole, the outside of first pivot one end is equipped with the rotating electrical machines, the pivot is located the both sides of mounting bracket inside part and is equipped with the mount, the outside of pivot is equipped with the semi-cylindrical barrel with mount fixed connection, the pivot is located the middle part of semi-cylindrical barrel terminal surface, the lower part both sides of semi-cylindrical barrel are equipped with the rotor plate.

Present grit screening plant generally makes the material vibrate from top to bottom or roll in the screening plant along vertical direction in the screening plant in order to reach the screening purpose, and artifical screening then generally makes the grit rotate around the screen tray center, consequently, present grit screening plant is when the operation, the motion state of grit in the screening plant is different with the motion state of artifical screening, the screening effect often is not good, and present grit screening plant often the structure is complicated, manufacturing cost is higher, it is great to occupy the construction site, the operation convenience is relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a device for screening sand with high efficiency, which comprises a screen disc and a plurality of supporting cylinders, wherein each supporting cylinder is vertically placed on the ground and is uniformly distributed below the screen disc, the supporting cylinders are in a hollow cylindrical shape, a motor is arranged at the bottom in the supporting cylinders, an output shaft of the motor extends upwards along the axial lead of the supporting cylinders and does not exceed the supporting cylinders, a driving gear is fixed on the output shaft of the motor, a gear ring is fixed on the inner wall of the supporting cylinders, a driven gear is engaged and connected between the driving gear and the gear ring, a driven shaft is fixedly arranged in a central mounting hole of the driven gear, the lower end of the driven shaft can slide on a supporting structure below the gear ring of the supporting cylinders, the top end of the driven shaft exceeds the supporting cylinders and is fixedly connected with the edge of the screen disc, the driven shaft rotates around the driving shaft under the driving of the driving gear, and drives the sieve tray at the top to rotate.

The gyro wheel is installed to the bottom of driven shaft, bearing structure includes the tray, tray horizontal installation is in supporting a section of thick bamboo, and the periphery of tray and supporting a section of thick bamboo inner wall fixed connection, be provided with on the tray and use the circular track of supporting a section of thick bamboo axle center as the center, both ends are equipped with the flange respectively about the gyro wheel, and the rail overlaps between the flange at both ends about the gyro wheel, and the gyro wheel can be followed circular track and slided.

The number of the supporting cylinders is not less than 3.

The supporting cylinder is provided with a supporting cylinder, wherein the supporting cylinder is provided with two sets of driving gears, two sets of driven gears and two sets of gear rings, the number of the driving gears, the number of the driven gears and the number of the gear rings are 2, the driving gears, the driven gears and the gear rings are arranged along the 2 height directions of the supporting cylinder, one set of the driving gears, the driven gears and the gear rings are arranged at one end, close to a screen disc, of the upper part in the supporting cylinder, and the other set of the driving gears, the driven gears and the gear rings are arranged in the middle of the supporting cylinder, namely the center position of the height of the supporting cylinder.

The tray is arranged on the motor in the supporting barrel, a central hole is formed in the tray, an output shaft of the motor can penetrate through the tray, the tray is horizontally arranged in the supporting barrel, and the distance from the driven gear on the upper portion of the driven shaft to the driven gear in the middle is equal to the distance from the driven gear in the middle to the roller at the bottom.

The supporting cylinder is provided with openings at the upper end and the lower end, the top of the supporting cylinder is provided with a movable top cover matched with the opening in size, the top cover is provided with a round hole matched with the driven shaft, the driven shaft 7 can drive the top cover to rotate after penetrating through the top cover, sand on the sieve tray does not enter the supporting cylinder, the edge of the sieve tray is in a non-grid shape, and a slag discharge port is arranged at the edge of the sieve tray.

The motor is a variable frequency speed regulating motor.

The beneficial effects of the utility model reside in that: adopt the technical scheme of the utility model, when the motor operation, the sieve tray rotates around the sieve tray center under the drive of driven shaft, and the motion state of grit is the same basically when making the motion state of grit in the sieve tray and artifical screening, has improved screening efficiency greatly, and the less grit of particle diameter directly spills from the sieve tray below after the screening, and the coarse grain of staying in the sieve tray after the screening adopts variable frequency speed motor increase rotation rate, discharges the coarse grain through the scum outlet under the effect of centrifugal force. Furthermore, the utility model discloses with the motor dress in the supporting cylinder, the supporting cylinder both had played the supporting action to the screen tray, still played the guard action to the motor, can prevent that the dust from falling into inside the motor, had guaranteed motor normal operating, had improved whole screening plant's reliability, the device screening grit is efficient, operation labour saving and time saving.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the internal structure of the supporting cylinder of the present invention;

fig. 4 is a schematic structural view of the driving gear, the driven gear and the gear ring of the present invention;

fig. 5 is a schematic structural diagram of the roller and the rail of the present invention.

In the figure: 1-sieve tray, 2-supporting cylinder, 3-motor, 4-gear ring, 5-driving gear, 6-driven gear, 7-driven shaft, 8-roller, 9-flange, 10-slag discharge port, 11-pallet and 12-track.

Detailed Description

The technical solution of the present invention is further described below;

as shown in fig. 1 to 5, the utility model provides a sand screening plant, including sieve tray 1 and many supporting cylinders 2, the top of supporting cylinder 2 is located to sieve tray 1 level, and each supporting cylinder 2 is vertical to be placed subaerial, and each supporting cylinder 2 evenly lays in the below of sieve tray 1.

As shown in fig. 3, the supporting cylinder 2 is hollow and cylindrical, the motor 3 is installed at the bottom of the supporting cylinder 2, the output shaft of the motor 3 extends upwards along the axial lead of the supporting cylinder 2 and does not exceed the supporting cylinder 2, the driving gear 5 is further fixed on the output shaft of the motor 3, the inner wall of the supporting cylinder 2 is further fixedly provided with a gear ring 4, as shown in fig. 4, a driven gear 6 is engaged and connected between the driving gear 5 and the gear ring 4, a driven shaft 7 is fixedly installed in a central installation hole of the driven gear 6, as shown in fig. 5, the lower end of the driven shaft 7 can be supported on a tray 11 in the supporting cylinder 2, as shown in fig. 5, the tray 11 is located below the gear ring 4, the lower end of the driven shaft 7 can slide on the tray 11, the center of the tray 11 is provided with a central hole through which the output shaft of the motor 3 can pass, the tray 11 is horizontally fixed in the supporting cylinder 2, and the periphery of the tray 11 is fixedly connected with the inner wall of the supporting cylinder 2, idler wheel 8 is installed to the bottom of driven shaft 7, be provided with circular track 12 on the tray 11, idler wheel 8 can slide along circular track 12, circular track 12 uses the axle center of a support section of thick bamboo 2 as the center, the gyro wheel 8 left and right sides is equipped with flange 9 respectively, rail 12 registrates between the flange 9 of the gyro wheel 8 left and right sides, thereby prevent that gyro wheel 8 from deviating from rail 12, rail 12 is used for supporting idler wheel 8 and driven shaft 7, make driven shaft 7 can be under the drive of driving gear 5, around driving shaft 9, do rotary motion in a support section of thick bamboo 2. As shown in fig. 1 and 2, the top end of the driven shaft 7 exceeds the support cylinder 2, the top end of the driven shaft is provided with the sieve tray 1, the sieve tray 1 is provided with an edge which can be fixedly arranged with the driven shaft 7, the edge is in a non-grid shape, and the edge of the sieve tray 1 is provided with a slag discharge port 10.

Preferably, in order to stabilize the sieve tray in the device, the number of the support cylinders 2 is not less than 3, and the support cylinders 2 are uniformly distributed below the sieve tray 1.

Preferably, in order to maintain the stable rotation of the driven shaft 7 and stabilize the sieve tray, the number of the driving gears 5, the driven gears 6 and the gear rings 4 arranged in each support cylinder 2 is 2, and the driving gears 5, the driven gears 6 and the gear rings 4 are arranged along the height direction of the support cylinder 2, wherein one set of the driving gears 5, the driven gears 6 and the gear rings 4 is arranged at one end of the upper part in the support cylinder 2 close to the sieve tray 1, and the other set of the driving gears 5, the driven gears 6 and the gear rings 4 is arranged at the middle part in the support cylinder 2, namely at the central position of the height of the support cylinder 2.

Preferably, in order to keep the structure of the device stable, the tray 11, the track 12 and the rollers 8 are all arranged at the lower part in the supporting cylinder 2, and the distance from the driven gear 6 at the upper part of the driven shaft 7 to the driven gear 6 at the middle part is equal to the distance from the driven gear 6 at the middle part to the rollers 8 at the bottom part. On the one hand, the support cylinder 2 can be kept stable, and on the other hand, the driven shaft 7 can be supported to rotate stably in the support cylinder 2, so that the sieve tray 1 rotates stably.

Preferably, the sieve tray 1 is in the shape of a disk as a whole.

Preferably, the motor 3 is a variable frequency speed motor.

Preferably, the support tube 2 is formed in a hollow cylindrical shape, and has both upper and lower ends opened, for the convenience of mounting and using the device.

Preferably, in order to facilitate the use of the device, a movable top cover matched with the opening of the support cylinder can be arranged at the top of the support cylinder, the top cover is provided with a round hole through which the driven shaft 7 can pass, and the top cover can be driven by the driven shaft 7 to rotate along the support cylinder 2, so that sand on the sieve tray 1 cannot enter the support cylinder 2.

In the use, when the motor operation, the sieve tray is under the drive of driven shaft, rotate around the driving gear center on the output shaft of motor, the motion state of grit when making the motion state of grit in the sieve tray and manual screening is the same basically, through the motor operation, the screening efficiency has been improved greatly, the grit that the particle diameter is less after the screening directly spills from sieve tray fretwork net below, and to the coarse grain of staying in the sieve tray after the screening, can adopt variable frequency speed motor increase sieve tray sand's rate of motion, discharge the coarse grain through the slag notch under the effect of centrifugal force. Furthermore, the utility model discloses the device is adorned the motor in a supporting cylinder, and a supporting cylinder both had played the supporting role to the screen tray, still played the guard action to the motor, can prevent that the dust from falling into inside the motor, had guaranteed motor normal operating, had improved whole screening plant's reliability to reduced whole screening plant's area, the utility model has the advantages of simple structure occupies that the construction site is less, and the operation convenience is good. In the actual construction operation process, the material loading can be carried out through a small-sized face shovel, or the material loading is optimized to be conveyed through a belt. In addition, the size of the sieve pores in the drying tray can be adjusted according to the grading requirement of the sand.

Claims

1. The device for screening sand with high efficiency comprises a screen disc and a plurality of supporting cylinders, and is characterized in that each supporting cylinder is vertically placed on the ground, and is uniformly arranged below the sieve tray, the supporting cylinder is in a hollow cylindrical shape, the motor is arranged at the bottom in the supporting cylinder, the output shaft of the motor extends upwards along the axial lead of the supporting cylinder and does not exceed the supporting cylinder, a driving gear is fixed on the output shaft of the motor, a gear ring is fixed on the inner wall of the supporting cylinder, a driven gear is engaged and connected between the driving gear and the gear ring, a driven shaft is fixedly installed in a central installation hole of the driven gear, the lower end of the driven shaft can slide on a supporting structure below the gear ring of the supporting cylinder, the top end of the driven shaft exceeds the supporting cylinder and is fixedly connected with the edge of the sieve tray, the driven shaft rotates around the driving shaft under the driving of the driving gear and drives the sieve tray at the top to rotate.

2. The device for screening sand with high efficiency as claimed in claim 1, wherein the bottom of the driven shaft is provided with a roller, the supporting structure comprises a tray, the tray is horizontally arranged in the supporting cylinder, the periphery of the tray is fixedly connected with the inner wall of the supporting cylinder, the tray is provided with a circular rail which takes the axis of the supporting cylinder as the center, the left end and the right end of the roller are respectively provided with a flange, the rail is sleeved between the flanges at the left end and the right end of the roller, and the roller can slide along the circular rail.

3. An apparatus for screening sand at a high efficiency as claimed in claim 1 wherein said support cartridges are not less than 3 in number.

4. The apparatus of claim 1 wherein the number of drive gears, driven gears and gear rings in the support cylinder is 2 and the drive gears, driven gears and gear rings are arranged along the height of the support cylinder, wherein one set of drive gears, driven gears and gear rings are arranged at the upper part of the support cylinder near one end of the screen disc, and the other set of drive gears, driven gears and gear rings are arranged at the middle part of the support cylinder, i.e. at the center of the height of the support cylinder.

5. An apparatus for screening sand at a high efficiency as claimed in claim 2 wherein said tray is located above the motor in the support cylinder, said tray having a central aperture through which the output shaft of the motor can pass, the spacing between the driven gear in the upper portion of the driven shaft to the driven gear in the middle portion being equal to the spacing between the driven gear in the middle portion and the rollers in the bottom portion.

6. The device for efficiently screening the sand according to claim 1, wherein the upper end and the lower end of the supporting cylinder are provided with openings, the top of the supporting cylinder is provided with a movable top cover matched with the openings in size, the top cover is provided with a round hole matched with the driven shaft, the driven shaft can drive the top cover to rotate after passing through the top cover, the sand on the sieve tray does not enter the supporting cylinder, the edge of the sieve tray is in a non-grid shape, and the edge of the sieve tray is provided with a slag discharge hole.

7. An apparatus for screening sand at a high efficiency as claimed in claim 1 wherein said motor is a variable frequency speed motor.