CN111842111A

CN111842111A - High-efficient type screening sand equipment

Info

Publication number: CN111842111A
Application number: CN202010666688.2A
Authority: CN
Inventors: 何桂华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2020-10-30

Abstract

The invention relates to high-efficiency sand screening equipment, which comprises a main body, a screen, a feeding pipe, a discharging pipe, a vibrator, two supporting blocks, a grinding mechanism and an air pumping mechanism, wherein the air pumping mechanism comprises a connecting box, a moving plate, an air inlet pipe, an air outlet pipe, a filter screen, a driving assembly and a knocking assembly, the knocking assembly comprises a knocking block, a guide rod and a hinge rod, the grinding mechanism comprises a rotating assembly, a first bearing, a connecting pipe, a connecting rod, a grinding disc, a first bevel gear, a connecting assembly, two fixing rods and two moving assemblies, the moving assemblies comprise a second bevel gear, a lead screw, a sliding block, a second bearing and a supporting rod, the high-efficiency sand screening equipment can pump the inside of the main body through the air pumping mechanism, so that the pressure above the screen is higher than that below the screen, sand can conveniently pass through the screen, thereby improving, realized the function of milling the grit, reduced the probability of gravel caking, avoided the gravel caking and can't pass through the screen cloth.

Description

High-efficient type screening sand equipment

Technical Field

The invention relates to the field of constructional engineering, in particular to high-efficiency sand screening equipment.

Background

The sand screening machine is also called dry land sand screening boat and sand-stone separator, and is suitable for use in river, reservoir and coal yard. The ship consists of a ship body, a frame, a speed reducer, a conveying belt, a rotary screen and an engine or a motor. The machine has simple structure, is economical and applicable and is easy to operate. It is divided into drum type sand screening machine, water washing drum type sand screening machine, vibration screen type sand screening machine, etc.

The existing sand screening machine is easy to cause sand caking due to the fact that the air environment is humid when screening sand, so that sand can not pass through the screen, the sand screening effect is influenced, and the existing sand screening machine only enables sand to pass through the screen through vibration of the screen, so that the time of the sand passing through the screen is increased, the sand screening work efficiency is reduced, and the practicability of the existing sand screening machine is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the high-efficiency sand screening device is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high-efficiency sand screening device comprises a main body, a screen, a feeding pipe, a discharging pipe, a vibrator and two supporting blocks, wherein the two supporting blocks are fixed on two sides below the main body in decibels;

The air pumping mechanism comprises a connecting box, a movable plate, an air inlet pipe, an air outlet pipe, a filter screen, a driving assembly and a knocking assembly, wherein the connecting box is fixed on the main body, the connecting box is communicated with the inside of the main body through the air inlet pipe, one end, close to the main body, of the air inlet pipe is arranged below the filter screen, the lower part of the connecting box is communicated with the air outlet pipe, the filter screen is fixed in the air inlet pipe, one-way valves are arranged in the air inlet pipe and the air outlet pipe and are electrically connected with the PLC, the movable plate is arranged in the connecting box and is hermetically connected with the inner wall of the connecting box, the driving assembly is arranged at the top in the connecting box and is connected with the upper part of the movable plate, the knocking assembly is connected with the lower part of the movable plate;

the knocking assembly comprises a knocking block, a guide rod and a hinge rod, the knocking block abuts against the filter screen, two ends of the hinge rod are respectively hinged with one side of the lower portion of the movable plate, far away from the main body, and the upper portion of the knocking block, two ends of the guide rod are respectively fixedly connected with the inner walls of two sides of the connecting box, the knocking block is sleeved on the guide rod, and the knocking block is in sliding connection with the guide rod;

The grinding mechanism comprises a rotating component, a first bearing, a connecting pipe, a connecting rod, a grinding disc, a first bevel gear, a connecting component, two fixing rods and two moving components, wherein the rotating component is arranged above a main body and is connected with the upper part of a moving plate, the first bearing is fixed at the top part in the main body, a through hole is formed in the upper part of the main body, one end of the connecting pipe is connected with the rotating component, the other end of the connecting pipe penetrates through the through hole and is arranged in the main body, the connecting pipe is fixedly connected with the inner ring of the first bearing, the connecting rod and the connecting pipe are coaxially arranged, one end of the connecting rod is arranged in the connecting pipe, the connecting rod is connected with the inner wall of the connecting pipe through the connecting component, the other end of the connecting rod is fixedly connected with the center of the upper part of the grinding, the connecting pipe and the through hole are coaxially arranged, the first bevel gear is fixed at the top in the main body through a fixing rod, the two moving assemblies are symmetrically arranged relative to the axis of the through hole, the moving assemblies are connected with the first bevel gear, and the moving assemblies are connected with the upper part of the grinding disc;

The movable assembly comprises a second bevel gear, a screw rod, a sliding block, a second bearing and a supporting rod, the second bearing is fixed above the grinding disc, two ends of the screw rod are fixedly connected with an inner ring of the second bearing and the second bevel gear respectively, the first bevel gear is meshed with the second bevel gear, the sliding block is sleeved on the screw rod, a connecting part of the sliding block and the screw rod is provided with a thread matched with the screw rod, and two ends of the supporting rod are hinged with the upper part of the grinding disc and the lower part of the sliding block respectively.

Preferably, in order to drive the movable plate to move, the driving assembly comprises an iron block, a spring and two electromagnets, the iron block is in a circular ring shape, the iron block is fixed above the movable plate, the electromagnets are fixed at the top in the connecting box and electrically connected with the PLC, the electromagnets are fixedly connected with the iron block, and two ends of the spring are respectively connected with the top in the connecting box and the upper side of the movable plate.

Preferably, in order to drive the connecting pipe to rotate, the rotating assembly comprises a rotating gear, a movable rack, a moving unit, a fixed plate and a plurality of elastic ropes, the rotating gear is fixedly connected with one end, far away from the grinding disc, of the connecting pipe, the movable rack is meshed with the rotating gear, the fixed plate is vertically fixed on one side, far away from the connecting box, of the upper portion of the main body, the elastic ropes are uniformly distributed between the fixed plate and the movable rack, two ends of each elastic rope are fixedly connected with one end of the movable rack and the fixed plate respectively, the elastic ropes are in a stretching state, and the other end of each movable rack is connected with the upper portion of the movable plate through the moving.

Preferably, in order to drive the movable rack to move, the moving unit comprises a moving rope and a connecting pulley, the connecting pulley is fixed on the main body, one end of the moving rope is fixedly connected with one end, far away from the fixed plate, of the movable rack, and the other end of the moving rope bypasses the fixed pulley and is fixedly connected with the upper portion of the movable plate.

As preferred, for the moving direction of restriction removal rack, the runner assembly still includes two gag lever posts, the one end of two gag lever posts respectively with the both sides fixed connection of the below of removal rack, the top of main part is equipped with the bar groove, the other end setting of gag lever post is in the inside in bar groove, gag lever post and bar groove sliding connection, the gag lever post matches with the bar groove.

Preferably, in order to avoid the separation of the limiting rod and the strip-shaped groove, the strip-shaped groove is a dovetail groove.

Preferably, in order to restrict the moving direction of the sliding block, the moving assembly further comprises a slide way, one end of the slide way is fixedly connected with the outer ring of the second bearing, a sliding groove is formed in one side, close to the sliding block, of the slide way, the sliding groove is parallel to the screw rod, the sliding block is arranged inside the sliding groove, and the sliding block is connected with the sliding groove in a sliding mode.

Preferably, the screw is coated with grease in order to make the slider move smoothly.

As preferred, for the moving direction of restriction connecting rod, the circumference is evenly fixed with the connecting strip on the connecting rod, be equipped with a plurality of recesses on the inner wall of connecting pipe, the quantity of recess equals with the quantity of connecting strip, recess and connecting strip one-to-one, the connecting strip sets up the inside at the recess, connecting strip and recess sliding connection.

Preferably, the movable rope is made of a steel wire rope in order to prolong the service life of the movable rope.

The invention has the advantages that the high-efficiency sand screening device can perform air extraction work on the inside of the main body through the air extraction mechanism, so that the pressure intensity above the screen is greater than that below the screen, thereby providing a downward force for the sand above the screen, facilitating the sand to pass through the screen, improving the working efficiency of screening the sand, compared with the prior air exhaust mechanism, the air exhaust mechanism can also vibrate the filter screen, so that sand and stones adhered to the filter screen can be conveniently shaken off, the probability of blockage of the filter screen is reduced, the influence on the circulation of air is avoided, through the grinding mechanism, the function of grinding the sand and stone is realized, the probability of sand and stone agglomeration is reduced, the sand and stone agglomeration is avoided, the sand and stone can not pass through the screen, compared with the existing grinding mechanism, the milling mechanism and the air exhaust mechanism are integrated into a linkage mechanism, the functions of air exhaust and milling can be realized through the driving of one power source, and the practicability of the equipment is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a high efficiency sand screening apparatus of the present invention;

FIG. 2 is a schematic structural diagram of an air suction mechanism of the high-efficiency sand screening device of the invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is a schematic view of a connecting structure of a connecting rod and a connecting pipe of the high-efficiency sand screening apparatus of the present invention;

in the figure: 1. the automatic cleaning machine comprises a main body, 2 parts of a supporting block, 3 parts of a screen, 4 parts of a vibrator, 5 parts of a connecting box, 6 parts of an electromagnet, 7 parts of a spring, 8 parts of an iron block, 9 parts of a moving plate, 10 parts of an air inlet pipe, 11 parts of an air outlet pipe, 12 parts of a filter screen, 13 parts of a knocking block, 14 parts of a guide rod, 15 parts of a hinge rod, 16 parts of a moving rope, 17 parts of a connecting pulley, 18 parts of a moving rack, 19 parts of a rotating gear, 20 parts of an elastic rope, 21 parts of a fixing plate, 22 parts of a connecting pipe, 23 parts of a connecting rod, 24 parts of a connecting strip, 25 parts of a grinding disc, 26 parts of a supporting rod, 27 parts of a sliding block, 28 parts of.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, the high-efficiency sand sieving device comprises a main body 1, a screen 3, a feeding pipe, a discharging pipe, a vibrator 4 and two supporting blocks 2, wherein the two supporting blocks 2 are fixed on two sides below the main body 1 in decibels, the screen 3 is horizontally fixed in the main body 1, the vibrator 4 is fixed below the screen 3, an operation panel is fixed on one side of the main body 1, a PLC is arranged in the operation panel, the vibrator 4 is electrically connected with the PLC, the feeding pipe is arranged above one side of the main body 1, the discharging pipe is arranged below the main body 1, the feeding pipe and the discharging pipe are both communicated with the main body 1, the high-efficiency sand sieving device further comprises a grinding mechanism and an air pumping mechanism, the grinding mechanism is arranged at the top in the main body 1, the air pumping mechanism is arranged on one side of the main body 1;

PLCs, i.e., programmable logic controllers, are generally used for the processing of data and the receipt and output of instructions for central control.

This husky equipment of high-efficient type sieve can be to the work of bleeding 1 inside of main part through the mechanism of bleeding for the pressure of screen cloth 3 top is greater than the below of screen cloth 3, thereby gives a decurrent power of gravel and sand of screen cloth 3 top, and the gravel and sand of being convenient for passes through screen cloth 3, thereby has improved the work efficiency of sieving husky, through the mechanism of milling, has realized the function of milling the grit, has reduced the probability of gravel caking, avoids the gravel caking and can't pass through screen cloth 3.

As shown in fig. 2, the air pumping mechanism comprises a connecting box 5, a moving plate 9, an air inlet pipe 10, an air outlet pipe 11, a filter screen 12, a driving component and a knocking component, the connecting box 5 is fixed on the main body 1, the connecting box 5 is communicated with the inside of the main body 1 through the air inlet pipe 10, one end of the air inlet pipe 10 close to the main body 1 is arranged below the screen 3, the lower part of the connecting box 5 is communicated with the air outlet pipe 11, the filter screen 12 is fixed in the air inlet pipe 10, one-way valves are arranged in the air inlet pipe 10 and the air outlet pipe 11 and are electrically connected with the PLC, the moving plate 9 is arranged inside the connecting box 5, the moving plate 9 is hermetically connected with the inner wall of the connecting box 5, the driving component is arranged at the top part of the connecting box 5 and is connected with the upper part of the moving plate 9, and the knocking component is, the upper part of the moving plate 9 is connected with a grinding mechanism;

The knocking component comprises a knocking block 13, a guide rod 14 and a hinge rod 15, the knocking block 13 is abutted against the filter screen 12, two ends of the hinge rod 15 are respectively hinged with one side of the lower portion of the moving plate 9, far away from the main body 1, and the upper portion of the knocking block 13, two ends of the guide rod 14 are respectively fixedly connected with the inner walls of two sides of the connecting box 5, the knocking block 13 is sleeved on the guide rod 14, and the knocking block 13 is in sliding connection with the guide rod 14;

when air is pumped, the driving assembly is controlled to work to drive the movable plate 9 to move upwards, so that air in the main body 1 enters the interior of the air cylinder after impurities are removed through the filter screen 12, then the driving assembly is controlled to work to enable the movable plate 9 to move downwards, so that the air in the air cylinder is led into the atmosphere through the air outlet pipe 11, the air in the main body 1 can be continuously pumped into the atmosphere through the upward and downward movement of the movable plate 9 in the connecting box 5, so that the air pressure below the screen 3 is reduced, the pressure above the screen 3 is greater than that below the screen 3, a downward force is applied to gravel above the screen 3, so that the gravel passes through the screen 3, the sand screening efficiency is improved, when the movable plate 9 moves upwards, the knocking block 13 is driven by the hinge rod 15 to move in a direction away from the filter screen 12, when the movable plate 9 moves downwards, the knocking block 13 is driven by the hinge rod 15 to move in a direction close to the filter, so that the knocking block 13 knocks the filter screen 12, the filter screen 12 vibrates, sand and stone adhered to the filter screen 12 are shaken off conveniently, the probability of blockage of the filter screen 12 is reduced, and air circulation is prevented from being influenced.

As shown in fig. 1 and 3, the grinding mechanism includes a rotating assembly, a first bearing, a connecting pipe 22, a connecting rod 23, a grinding disc 25, a first bevel gear 30, a connecting assembly, two fixing rods and two moving assemblies, the rotating assembly is arranged above the main body 1, the rotating assembly is connected with the upper part of the moving plate 9, the first bearing is fixed on the top of the main body 1, a through hole is arranged above the main body 1, one end of the connecting pipe 22 is connected with the rotating assembly, the other end of the connecting pipe 22 passes through the through hole and is arranged inside the main body 1, the connecting pipe 22 is fixedly connected with the inner ring of the first bearing, the connecting rod 23 is coaxially arranged with the connecting pipe 22, one end of the connecting rod 23 is arranged inside the connecting pipe 22, the connecting rod 23 is connected with the inner wall of the connecting pipe 22 through the connecting assembly, and the other end of the connecting rod 23 is fixedly connected, the first bevel gear 30 is provided with a through hole, the connecting pipe 22 passes through the through hole, the connecting pipe 22 and the through hole are coaxially arranged, the first bevel gear 30 is fixed at the top in the main body 1 through a fixing rod, the two moving assemblies are symmetrically arranged relative to the axis of the through hole, the moving assemblies are connected with the first bevel gear 30, and the moving assemblies are connected with the upper part of the grinding disc 25;

The moving assembly comprises a second bevel gear 29, a screw rod 28, a sliding block 27, a second bearing and a supporting rod 26, the second bearing is fixed above the grinding disc 25, two ends of the screw rod 28 are fixedly connected with an inner ring of the second bearing and the second bevel gear 29 respectively, the first bevel gear 30 is meshed with the second bevel gear 29, the sliding block 27 is sleeved on the screw rod 28, a thread matched with the screw rod 28 is arranged at the joint of the sliding block 27 and the screw rod 28, and two ends of the supporting rod 26 are hinged with the upper part of the grinding disc 25 and the lower part of the sliding block 27 respectively.

When the movable plate 9 moves, the rotating assembly is driven to work, the connecting pipe 22 rotates, the connecting rod 23 is driven to rotate through the connecting assembly, the grinding disc 25 rotates, the second bevel gear 29 can be driven to rotate around the axis of the through hole, the first bevel gear 30 is meshed with the second bevel gear 29, the second bevel gear 29 rotates, the screw rod 28 is driven to rotate, the sliding block 27 rotates along the screw rod 28, the grinding disc 25 is driven to move through the supporting rod 26, the grinding disc 25 can also move when rotating, grinding work is carried out on sand above the screen cloth 3 through the grinding disc 25, the probability of sand caking is reduced, the sand caking is avoided, the sand caking cannot pass through the screen cloth 3, and the practicability of the equipment is improved.

Preferably, in order to drive the moving plate 9 to move, the driving assembly comprises an iron block 8, a spring 7 and two electromagnets 6, the iron block 8 is in a circular ring shape, the iron block 8 is fixed above the moving plate 9, the electromagnets 6 are fixed at the top of the connecting box 5, the electromagnets 6 are electrically connected with the PLC, the electromagnets 6 are fixedly connected with the iron block 8, and two ends of the spring 7 are respectively connected with the top of the connecting box 5 and the top of the moving plate 9.

When air is pumped, the electromagnet 6 is controlled to be powered on to attract the iron block 8, the iron block 8 moves towards the direction close to the electromagnet 6 to drive the movable plate 9 to move upwards, the spring 7 is compressed, air in the main body 1 enters the air cylinder after impurity removal through the filter screen 12, the electromagnet 6 is controlled to be powered off again, the iron block 8 is not attracted any more, the movable plate 9 moves downwards through restoring force of the spring 7, air in the air cylinder is led into the atmosphere through the air outlet pipe 11, the air in the main body 1 is continuously pumped into the atmosphere through the power on and off of the electromagnet 6, air pressure below the screen 3 is reduced, pressure above the screen 3 is larger than that below the screen 3, downward force is provided for gravel above the screen 3, gravel can pass through the screen 3 conveniently, and sand screening efficiency is improved.

Preferably, in order to drive the connecting pipe 22 to rotate, the rotating assembly includes a rotating gear 19, a moving rack 18, a moving unit, a fixing plate 21 and a plurality of elastic ropes 20, the rotating gear 19 is fixedly connected with one end of the connecting pipe 22 far away from the grinding disc 25, the moving rack 18 is meshed with the rotating gear 19, the fixing plate 21 is vertically fixed on one side of the upper portion of the main body 1 far away from the connecting box 5, the elastic ropes 20 are uniformly distributed between the fixing plate 21 and the moving rack 18, two ends of each elastic rope 20 are respectively fixedly connected with one end of the moving rack 18 and the fixing plate 21, each elastic rope 20 is in a stretching state, and the other end of the moving rack 18 is connected with the upper portion of the moving plate 9 through the moving unit.

Preferably, in order to drive the moving rack 18 to move, the moving unit comprises a moving rope 16 and a connecting pulley 17, the connecting pulley 17 is fixed on the main body 1, one end of the moving rope 16 is fixedly connected with one end of the moving rack 18 far away from the fixed plate 21, and the other end of the moving rope 16 bypasses the fixed pulley and is fixedly connected with the upper part of the moving plate 9.

When the moving plate 9 moves upward, the moving rack 18 is driven by the stretched elastic rope 20 to move in a direction close to the fixed plate 21, the rotating gear 19 is rotated by meshing the moving rack 18 with the rotating gear 19, so that the connecting pipe 22 is driven to rotate, when the moving plate 9 moves downward, the moving rack 18 is driven by the moving rope 16 to move in a direction away from the fixed plate 21, the elastic rope 20 is stretched, so that the rotating gear 19 rotates in a reverse direction, and the function of back-and-forth rotation of the connecting pipe 22 is realized.

As preferred, for the restriction removes the moving direction of rack 18, rotating assembly still includes two gag lever posts 32, two gag lever posts 32 one end respectively with the both sides fixed connection of the below of removing rack 18, the top of main part 1 is equipped with the bar groove, the other end setting of gag lever post 32 is in the inside in bar groove, gag lever post 32 and bar groove sliding connection, gag lever post 32 matches with the bar groove.

Preferably, in order to avoid the separation of the limiting rod 32 from the strip-shaped groove, the strip-shaped groove is a dovetail groove.

When the movable rack 18 moves, the limiting rod 32 is driven to move along the strip-shaped groove, so that the moving direction of the movable rack 18 is limited, the movable rack 18 cannot shake when moving, the movable rack 18 cannot be meshed with the rotating gear 19, and the stability of the rotating gear 19 in rotation is improved.

Preferably, in order to limit the moving direction of the sliding block 27, the moving assembly further includes a sliding way 31, one end of the sliding way 31 is fixedly connected with the outer ring of the second bearing, a sliding groove is arranged on one side of the sliding way 31 close to the sliding block 27, the sliding groove is parallel to the screw rod 28, the sliding block 27 is arranged inside the sliding groove, and the sliding block 27 is slidably connected with the sliding groove.

Through setting up slide 31, restricted the moving direction of slider 27 for slider 27 can not take place to rotate when moving along lead screw 28, thereby has improved the stability when slider 27 removes.

Preferably, in order to make the slider 27 move smoothly, the screw 28 is coated with grease, so that the friction between the screw 28 and the slider 27 is reduced, and the slider 27 moves more smoothly along the screw 28.

As shown in fig. 4, connecting strips 24 are uniformly fixed on the connecting rod 23 in the circumferential direction, a plurality of grooves are formed in the inner wall of the connecting pipe 22, the number of the grooves is equal to that of the connecting strips 24, the grooves correspond to the connecting strips 24 one to one, the connecting strips 24 are arranged inside the grooves, and the connecting strips 24 are connected with the grooves in a sliding manner.

When connecting rod 23 removed along connecting pipe 22, drive connecting strip 24 and remove along the recess, restricted connecting rod 23's moving direction for connecting rod 23 is more stable when reciprocating, and connecting pipe 22 rotates simultaneously, inlays in the recess through connecting strip 24, can drive connecting rod 23 and rotate, thereby can drive mill 25 and rotate, can also reciprocate when making mill 25 rotate.

Preferably, the movable rope 16 is made of a steel wire rope in order to extend the service life of the movable rope 16.

When air is pumped, the electromagnet 6 is controlled to be powered on to attract the iron block 8, the iron block 8 moves towards the direction close to the electromagnet 6 to drive the movable plate 9 to move upwards, the spring 7 is compressed, air in the main body 1 enters the air cylinder after impurity removal through the filter screen 12, the electromagnet 6 is controlled to be powered off again, the iron block 8 is not attracted any more, the movable plate 9 moves downwards through restoring force of the spring 7, air in the air cylinder is led into the atmosphere through the air outlet pipe 11, the air in the main body 1 is continuously pumped into the atmosphere through the power on and off of the electromagnet 6, air pressure below the screen 3 is reduced, pressure above the screen 3 is larger than that below the screen 3, downward force is provided for gravel above the screen 3, gravel can pass through the screen 3 conveniently, and sand screening efficiency is improved. When the moving plate 9 moves downwards, the hinge rod 15 drives the knocking block 13 to move towards the direction close to the filter screen 12, so that the knocking block 13 knocks the filter screen 12, thereby causing the filter screen 12 to vibrate, facilitating shaking off sand and stones adhered to the filter screen 12, thereby reducing the probability of blocking the filter screen 12 and avoiding influencing the circulation of air, when the moving plate 9 moves upwards, the stretched elastic rope 20 drives the moving rack 18 to move towards the direction close to the fixed plate 21, the moving rack 18 is meshed with the rotating gear 19, so that the rotating gear 19 rotates, thereby driving the connecting pipe 22 to rotate, when the moving plate 9 moves downwards, the moving rope 16 drives the moving rack 18 to move towards the direction far away from the fixed plate 21, the elastic rope 20 is stretched, so that the rotating gear 19 rotates reversely, thereby realizing the function of back and forth rotation of the connecting pipe 22, when the connecting pipe 22 rotates, can drive connecting rod 23 through connecting strip 24 and rotate, make mill 25 rotate, thereby can drive second bevel gear 29 and rotate round the fenestrate axis, through the meshing of first bevel gear 30 and second bevel gear 29, make second bevel gear 29 rotate, thereby drive lead screw 28 and rotate, make slider 27 rotate along lead screw 28, it removes to drive mill 25 through branch 26, thereby make mill 25 still can remove when rotating, thereby make mill 25 mill the work to the gravel and sand above screen cloth 3, thereby the probability of gravel and sand caking has been reduced, avoid the gravel and sand caking and can't pass through screen cloth 3, thereby the practicality of equipment has been improved.

Compared with the prior art, the high-efficiency sand screening device can perform air suction work on the inside of the main body 1 through the air suction mechanism, so that the pressure above the screen 3 is greater than the pressure below the screen 3, a downward force is provided for sand and stone above the screen 3, the sand and stone can conveniently pass through the screen 3, the sand screening work efficiency is improved, compared with the existing air suction mechanism, the air suction mechanism can also vibrate the filter screen 12 to facilitate shaking off the sand and stone adhered to the filter screen 12, the blocking probability of the filter screen 12 is reduced, the air circulation is prevented from being influenced, through the grinding mechanism, the function of grinding the sand and stone is realized, the caking probability of the sand and stone is reduced, the sand and stone can not pass through the screen 3, compared with the existing grinding mechanism, the grinding mechanism is integrated with the air suction mechanism, the air suction and grinding functions can be realized through the driving of a power source, the practicability of the equipment is improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The high-efficiency sand screening device comprises a main body (1), a screen (3), a feeding pipe, a discharging pipe, a vibrator (4) and two supporting blocks (2), wherein the two supporting blocks (2) are fixed on two sides below the main body (1) in decibels, the screen (3) is horizontally fixed inside the main body (1), the vibrator (4) is fixed below the screen (3), an operating panel is fixed on one side of the main body (1), a PLC is arranged in the operating panel, the vibrator (4) is electrically connected with the PLC, the feeding pipe is arranged above one side of the main body (1), the discharging pipe is arranged below the main body (1), the feeding pipe and the discharging pipe are both communicated with the main body (1), the high-efficiency sand screening device is characterized by further comprising a grinding mechanism and an air pumping mechanism, the grinding mechanism is arranged at the top inside the main body (1), and the air pumping mechanism is arranged on one side of the main body (1), the grinding mechanism is connected with the air pumping mechanism;

the air pumping mechanism comprises a connecting box (5), a moving plate (9), an air inlet pipe (10), an air outlet pipe (11), a filter screen (12), a driving assembly and a knocking assembly, wherein the connecting box (5) is fixed on the main body (1), the connecting box (5) is communicated with the inside of the main body (1) through the air inlet pipe (10), one end, close to the main body (1), of the air inlet pipe (10) is arranged below the screen (3), the lower part of the connecting box (5) is communicated with the air outlet pipe (11), the filter screen (12) is fixed in the air inlet pipe (10), one-way valves are arranged in the air inlet pipe (10) and the air outlet pipe (11) and are electrically connected with a PLC (programmable logic controller), the moving plate (9) is arranged in the inside of the connecting box (5), the inner wall of the moving plate (9) is hermetically connected with the connecting box (5), the driving assembly is arranged at the top of the connecting box (, the driving assembly is connected with the upper part of the moving plate (9), the knocking assembly is connected with the lower part of the moving plate (9), and the upper part of the moving plate (9) is connected with the grinding mechanism;

The knocking assembly comprises a knocking block (13), a guide rod (14) and an articulated rod (15), the knocking block (13) is abutted against the filter screen (12), two ends of the articulated rod (15) are respectively hinged with one side of the lower portion of the movable plate (9) far away from the main body (1) and the upper portion of the knocking block (13), two ends of the guide rod (14) are respectively fixedly connected with the inner walls of two sides of the connecting box (5), the knocking block (13) is sleeved on the guide rod (14), and the knocking block (13) is in sliding connection with the guide rod (14);

the grinding mechanism comprises a rotating assembly, a first bearing, a connecting pipe (22), a connecting rod (23), a grinding disc (25), a first bevel gear (30), a connecting assembly, two fixing rods and two moving assemblies, wherein the rotating assembly is arranged above the main body (1), the rotating assembly is connected with the upper part of the moving plate (9), the first bearing is fixed at the top part in the main body (1), a through hole is formed in the upper part of the main body (1), one end of the connecting pipe (22) is connected with the rotating assembly, the other end of the connecting pipe (22) penetrates through the through hole to be arranged in the main body (1), the connecting pipe (22) is fixedly connected with an inner ring of the first bearing, the connecting rod (23) and the connecting pipe (22) are coaxially arranged, one end of the connecting rod (23) is arranged in the connecting pipe (22), and the connecting rod (23) is connected with the inner wall of the connecting pipe (22) through, the other end of the connecting rod (23) is fixedly connected with the center above the grinding disc (25), a through hole is formed in the first bevel gear (30), the connecting pipe (22) penetrates through the through hole, the connecting pipe (22) and the through hole are coaxially arranged, the first bevel gear (30) is fixed to the top in the main body (1) through a fixing rod, the two moving assemblies are symmetrically arranged relative to the axis of the through hole, the moving assemblies are connected with the first bevel gear (30), and the moving assemblies are connected with the upper portion of the grinding disc (25);

The moving assembly comprises a second bevel gear (29), a screw rod (28), a sliding block (27), a second bearing and a supporting rod (26), the second bearing is fixed above the grinding disc (25), two ends of the screw rod (28) are fixedly connected with an inner ring of the second bearing and the second bevel gear (29) respectively, a first bevel gear (30) is meshed with the second bevel gear (29), the sliding block (27) is sleeved on the screw rod (28), a connecting part of the sliding block (27) and the screw rod (28) is provided with a thread matched with the screw rod (28), and two ends of the supporting rod (26) are hinged to the upper side of the grinding disc (25) and the lower side of the sliding block (27) respectively.

2. The high-efficiency sand screening device as claimed in claim 1, wherein the driving assembly comprises an iron block (8), a spring (7) and two electromagnets (6), the iron block (8) is in the shape of a circular ring, the iron block (8) is fixed above the moving plate (9), the electromagnets (6) are fixed at the top in the connecting box (5), the electromagnets (6) are electrically connected with the PLC, the electromagnets (6) are fixedly connected with the iron block (8), and two ends of the spring (7) are respectively connected with the top in the connecting box (5) and the top of the moving plate (9).

3. A high efficiency sand screening apparatus as claimed in claim 1, wherein said rotating assembly comprises a rotating gear (19), a moving rack (18), a moving unit, a fixed plate (21) and a plurality of elastic cords (20), the rotating gear (19) is fixedly connected with one end of the connecting pipe (22) far away from the grinding disc (25), the movable rack (18) is meshed with the rotating gear (19), the fixed plate (21) is vertically fixed on one side of the upper part of the main body (1) far away from the connecting box (5), the elastic ropes (20) are uniformly distributed between the fixed plate (21) and the movable rack (18), two ends of the elastic rope (20) are respectively and fixedly connected with one end of the movable rack (18) and the fixed plate (21), the elastic rope (20) is in a stretching state, and the other end of the movable rack (18) is connected with the upper part of the movable plate (9) through a movable unit.

4. A high efficiency sand screening apparatus as claimed in claim 3, wherein said moving unit comprises a moving rope (16) and a connecting pulley (17), said connecting pulley (17) is fixed on the main body (1), one end of said moving rope (16) is fixedly connected with one end of the moving rack (18) far from the fixed plate (21), and the other end of said moving rope (16) is fixedly connected with the upper part of the moving plate (9) by passing the fixed pulley.

5. The efficient sand screening device as claimed in claim 4, wherein the rotating assembly further comprises two limiting rods (32), one ends of the two limiting rods (32) are respectively fixedly connected with two sides of the lower portion of the moving rack (18), a strip-shaped groove is formed in the upper portion of the main body (1), the other end of each limiting rod (32) is arranged inside the strip-shaped groove, the limiting rods (32) are slidably connected with the strip-shaped groove, and the limiting rods (32) are matched with the strip-shaped groove.

6. A high efficiency sand screening apparatus as claimed in claim 5, wherein said strip slots are dovetail slots.

7. The efficient sand screening device as claimed in claim 1, wherein the moving assembly further comprises a slide way (31), one end of the slide way (31) is fixedly connected with the outer ring of the second bearing, a sliding groove is formed in one side, close to the sliding block (27), of the slide way (31), the sliding groove is parallel to the screw rod (28), the sliding block (27) is arranged inside the sliding groove, and the sliding block (27) is in sliding connection with the sliding groove.

8. A high efficiency sand screening apparatus as claimed in claim 1, wherein said screw (28) is coated with grease.

9. The efficient sand screening device as claimed in claim 1, wherein the connecting rods (24) are uniformly fixed on the connecting rods (23) in the circumferential direction, a plurality of grooves are formed in the inner wall of the connecting pipe (22), the number of the grooves is equal to that of the connecting rods (24), the grooves correspond to the connecting rods (24) one by one, the connecting rods (24) are arranged inside the grooves, and the connecting rods (24) are connected with the grooves in a sliding mode.

10. A high efficiency sand screening apparatus as claimed in claim 4, wherein said travelling line (16) is made of steel wire rope.