CN107952666B

CN107952666B - Multistage sand sorting unit for building

Info

Publication number: CN107952666B
Application number: CN201711243180.6A
Authority: CN
Inventors: 赵勇; 张晓�; 韩笑晨; 李鸣远; 王媛媛; 管洪; 寇明坤
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2017-11-30
Filing date: 2017-11-30
Publication date: 2023-06-23
Anticipated expiration: 2037-11-30
Also published as: CN107952666A

Abstract

The invention provides a sand sorting device for a multi-stage building, which is used for sorting sand grains and comprises a sand basket, a material conveying cylinder, a second material conveying pipe, a first material conveying pipe, a material dividing pipe, a first sorting system and a second sorting system, wherein the sand grains sequentially pass through the sand basket, the second material conveying pipe, the material conveying cylinder, the first material conveying pipe and the material dividing pipe and then flow into the first sorting system or the second sorting system, and the sand grain sorting device also comprises a first mode conversion system and a second mode conversion system, and the sand grains flowing out of the material dividing pipe are controlled by a steel wire rope to flow into the first sorting system or the second sorting system; the primary and secondary mode conversion system includes: the pulley block component is used for changing the tension direction of the steel wire rope, and the power winding and unwinding component is used for controlling winding and unwinding of the steel wire rope, and the pulley block component is connected with the power winding and unwinding component through the steel wire rope. The invention realizes the position adjustment of the single-stage and multi-stage sand screening vibrating screen so as to obtain the maximum screening efficiency, and can switch the single-stage and multi-stage sand screening modes, thereby improving the sand grain sorting efficiency.

Description

Multistage sand sorting unit for building

Technical Field

The invention belongs to the field of construction machinery, and particularly relates to a sand sorting device for a multi-stage construction.

Background

Currently, the screening work of the sand for the building mainly depends on semi-automatic mechanical screening and traditional manual screening. Semi-automatic mechanical screening is divided into a roller sand screening machine and a vibrating screen sand screening machine. The roller sand screening machine utilizes the rotation of the roller to separate sand and stone in the moving process of sand grains along the barrel wall; the vibrating screen type sand screening machine utilizes a vibrating screen to finish screening sand and stones, and single-stage vibrating screen sand screening machines and multi-stage vibrating screen sand screening machines are available on the market; traditional manual sand screening directly utilizes inclined screen cloth, and sand particles are sorted by means of movement of the sand particles along an inclined plane under the action of gravity.

For the roller sand screening machine, the structure is simple, sand particles with one specification can be screened out, sand particles with the other specification can be screened out, the replacement of the roller screen is required, when the roller screen with smaller specification is replaced for sand and stone separation, the rotating speed of the roller must be reduced, otherwise, the sand particles are caused to rotate along with the roller, the sorting efficiency is reduced, and the reduction of the rotating speed is reduced to a certain extent, so that the roller sand screening machine is suitable for a single-stage sand screening mode and has no multi-stage sand screening mode; the single-stage vibrating screen sand machine is provided with a planar vibrating screen and an inclined-plane vibrating screen, and in the working process, the screen is required to be replaced when sand grains with another specification are screened, and the vibrating screen is fixed in position, so that the vibrating position with highest screening efficiency cannot be found out after the screen is replaced, which is the limitation of the single-stage vibrating screen sand machine, and the multistage vibrating screen sand machine is developed in the single-stage inclined-plane vibrating screen sand machine, so that the multistage screening function is realized, but the problem of adjustment of the maximum screening efficiency is not solved, the maximum screening efficiency cannot be achieved when different screens are replaced, further the working efficiency is reduced, and the energy consumption is increased; the traditional manual sand screening mode still exists the most widely at present, but the sorting efficiency is low, the requirements of the construction period of modern building engineering cannot be met, and when the manual sand screening is carried out, the labor intensity of workers is high, and the damage to the body is large.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a sand sorting device for a multi-stage building, which solves the problems of incapacity of conveying sand grains, incapacity of adjusting the position of a single-stage sand screening vibrating screen, incapacity of adjusting the position of a multi-stage sand screening vibrating screen, acquisition of maximum screening efficiency, conversion of single-stage sand screening modes and multi-stage sand screening modes, excessive participation of manpower in the sand screening process, high labor intensity and low sand grain sorting efficiency in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme:

the sand sorting device for the multi-stage building comprises a sand basket, a material conveying cylinder, a first material conveying pipe, a second material conveying pipe, a material dividing pipe, a first-stage sorting system and a second-stage sorting system, wherein sand sequentially flows into the first-stage sorting system or the second-stage sorting system after passing through the sand basket, the second material conveying pipe, the material conveying cylinder, the first material conveying pipe and the material dividing pipe, and further comprises a first-stage mode and second-stage mode conversion system, and the first-stage mode and the second-stage mode conversion system control the sand flowing out of the material dividing pipe to flow into the first-stage sorting system or the second-stage sorting system;

the primary and secondary mode conversion system includes: the pulley block component is used for changing the tension direction of the steel wire rope, and the power winding and unwinding component is used for controlling the winding and unwinding of the steel wire rope, and the pulley block component is connected with the power winding and unwinding component through the steel wire rope;

the device also comprises a vibration system for driving the primary sorting system or the secondary sorting system to vibrate.

The device comprises a frame, a vibration system and a feeding device, wherein the frame comprises a base which is horizontally arranged, and a feeding cylinder support, a pulley block support, a feeding pipe joint support and a vibration system support for supporting a feeding cylinder are respectively arranged on the base from left to right along the horizontal direction;

an oscillating rack is arranged in the vibrating system support bracket, and a primary sorting system and a secondary sorting system are arranged on the inner side of the oscillating rack;

the tail end of the material dividing pipe is horizontally arranged at the upper end part of the vibration system supporting bracket.

Further, the primary sorting system includes: the sand grain separating device comprises a swinging frame and a primary screen support frame, wherein the swinging frame is connected with the primary screen support frame, the primary screen support frame is positioned below the sand grain outflow end of the separating pipe, and the swinging frame is connected with a steel wire rope and controls an included angle between the primary screen support frame and the sand grain outflow direction from the separating pipe through the tension of the steel wire rope; the primary screen support frame is provided with a primary screen.

Further, the secondary sorting system includes: the secondary screen support frame is arranged on the oscillating frame, a secondary screen is arranged on the secondary screen support frame, and the secondary screen support frame (31) is connected with a steel wire rope;

when the secondary separation system works, the separation pipe can rotate 180 degrees so that the sand particle outflow end of the separation pipe is right opposite to the secondary screen support frame.

Further, a first strip-shaped opening is formed in the first-stage screen support frame, a first dense bead sleeve is arranged on the side wall of the first strip-shaped opening, and the swing frame can move in the first strip-shaped opening through a first movable shaft;

the first-stage sorting system further comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected with the middle of the first-stage screen support frame, the other end of the first connecting rod is connected with the second connecting rod, the other end of the second connecting rod is connected with the oscillating rack, the first connecting rod, the second connecting rod, the oscillating rack and the first-stage screen support frame form a parallelogram structure, and the first connecting rod is parallel to the oscillating rack.

Further, the secondary screen support frame comprises a secondary screen upper support frame and a secondary screen lower support frame, and when the steel wire rope applies horizontal left pulling force to the secondary screen support frame, an included angle between the secondary screen upper support frame and the secondary screen lower support frame is an acute angle; when the steel wire rope does not apply horizontal left pulling force to the secondary screen support frame, an included angle between the secondary screen upper support frame and the secondary screen lower support frame is 180 degrees;

the second bar-shaped openings are formed in the second screen upper support frame and the second screen lower support frame, second dense bead sleeves are arranged on the side walls of the second bar-shaped openings, and the steel wire ropes can move in the second bar-shaped openings through second movable shafts;

the secondary screen upper support frame and the secondary screen lower support frame are respectively connected with the oscillating frame through a reset spring.

Further, the pulley block component comprises a first fixed pulley, a second fixed pulley, a third fixed pulley, a fourth fixed pulley, a fifth fixed pulley, a sixth fixed pulley, a movable pulley and a seventh fixed pulley, wherein the first fixed pulley is fixed at the upper end part of the conveying pipe joint bracket;

the base is provided with a rectangular pulley bracket, the third fixed pulley, the fifth fixed pulley and the sixth fixed pulley are respectively arranged on the base from right to left, the fourth fixed pulley is arranged on the outer side of one side, opposite to the base, of the rectangular pulley bracket, the seventh fixed pulley is arranged on the inner side of one side, opposite to the base, of the rectangular pulley bracket, a movable pulley is arranged between the sixth fixed pulley and the seventh fixed pulley, and the seventh fixed pulley is arranged above the sixth fixed pulley;

the steel wire rope sequentially passes through the first fixed pulley, the sixth fixed pulley, the movable pulley, the seventh fixed pulley, the power winding and unwinding component, the fifth fixed pulley, the third fixed pulley and the fourth fixed pulley from the end part of the steel wire rope connected with the swinging frame and then is connected with the second movable shaft.

Further, the power winding and unwinding component comprises a first belt pulley, a second belt pulley, a steel wire rope winding and unwinding shaft and a stepping motor which are arranged on the base, wherein the first belt pulley is installed on the steel wire rope winding and unwinding shaft in a key matching manner, the second belt pulley is installed on a motor shaft of the stepping motor in a key matching manner, and the first belt pulley is connected with the second belt pulley through a V belt;

the steel wire rope winding and unwinding shaft comprises a relatively outward thick position and a relatively inward thin position, the steel wire rope from the seventh fixed pulley is fixedly connected at the relatively outward thick position, and the steel wire rope from the fifth fixed pulley is fixedly connected at the relatively inward thin position.

Further, the vibration system includes: the motor shaft of the speed regulating motor is fixedly connected with the crank through the coupler, the crank is connected with the crank connecting rod through the movable hinge support, the crank connecting rod is connected with the connecting sleeve through the movable hinge support, and the connecting sleeve is fixedly connected with the oscillating frame through the set screw.

Further, the sand loading basket comprises a walking system, and further comprises a directional wheel and a universal wheel, wherein the directional wheel and the universal wheel are arranged below the base, the universal wheel is arranged below the sand loading basket, a locking device is arranged at the rear end of the directional wheel, the locking device comprises a hand wheel arranged above the base and a locking disc arranged below the base, and the hand wheel is connected with the locking disc through screw transmission.

Compared with the prior art, the invention has the following technical effects:

1. the sand grain sorting system can enable sand grains to be efficiently conveyed to the sorting system through the conveying system, so that the conveying capacity of the conveying system is improved, and the whole energy consumption is reduced;

2. the invention can lead sand grains to move downwards on the vibrating screen in a reciprocating curve, and can lead the position of the single-stage vibrating screen to be adjustable so as to maximize the separation efficiency;

3. the invention can enable the positions of the multistage vibrating screens to be adjustable, so that the efficiency of the multistage vibrating screens is maximized in the working condition of multistage sand screening;

4. the invention can realize the conversion between single-stage and multi-stage separation modes of the sand separation device for the same building and has high conversion speed;

5. the invention can rely on the structure to ensure that the sorting performance is reliable, the maintenance amount is small and the service life is long;

6. the automatic sorting machine can realize automation of sorting to the greatest extent, and liberates people from heavy physical labor.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention in one embodiment.

Fig. 2 is a schematic view of the overall structure of the present invention in another embodiment.

FIG. 3 is a schematic diagram of the structure of the primary and secondary sorting systems of the present invention.

Fig. 4 is a schematic view of the structure of the power take-up and pay-off unit in the present invention.

Fig. 5 is a schematic view of the structure of the wire rope reel of the present invention.

Fig. 6 is a schematic structural view of a vibration system.

Fig. 7 is a schematic structural view of a wire rope connected to a second bar-shaped opening through a second movable shaft.

Fig. 8 is a schematic structural view of a wire rope connected to a first strip-shaped opening through a second movable shaft.

Fig. 9 is a schematic structural view of an oscillating frame.

The meaning of each reference numeral in the figures is: 1-sand loading basket, 2-material conveying cylinder, 3-auger, 4-first fixed pulley, 5-wire rope, 6-swing frame, 7-first stage screen support frame, 8-1-first material conveying pipe, 8-2-second material conveying pipe, 9-material conveying pipe joint, 10-material distributing pipe, 11-vibration system support frame, 12-first connecting rod, 13-second connecting rod, 14-second fixed pulley, 15-fourth fixed pulley, 16-third fixed pulley, 17-fifth fixed pulley, 18-sixth fixed pulley, 19-first pulley, 20-seventh fixed pulley, 21-movable pulley, 22-second pulley, 23-base, 25-pulley block support, 26-material conveying pipe joint support, 27-universal wheels, 28-directional wheels, 29-hand wheels, 30-locking discs, 31-secondary screen support frames, 31-1-secondary screen upper support frames, 31-3-secondary screen lower support frames, 32-speed regulating motors, 33-couplers, 34-cranks, 35-crank connecting rods, 36-connecting sleeves, 37-oscillating frames, 38-V belts, 39-wire rope winding and unwinding shafts, 39-1-relative inward fine positions, 39-2-relative outward coarse positions, 40-second movable shafts, 41-second strip-shaped openings, 42-first movable shafts, 43-first strip-shaped openings, 44-second bead sleeves and 45-first bead sleeves.

The details of the invention are explained in further detail below with reference to the accompanying drawings.

Detailed Description

It should be noted that the horizontal direction and the vertical direction in the present invention refer to the horizontal direction and the vertical direction in fig. 1 and 2, respectively.

The following specific embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solutions of the present application fall within the protection scope of the present invention.

Example 1:

as shown in fig. 1 and 2, the embodiment provides a sand sorting device for multi-stage construction, which is used for sorting sand particles, and comprises a sand basket 1, a material conveying cylinder 2, a first material conveying pipe 8, a material separating pipe 10, a first-stage sorting system and a second-stage sorting system, wherein the sand particles sequentially pass through the sand basket 1, the second material conveying pipe 8-2, the material conveying cylinder 2, the first material conveying pipe 8-1 and the material separating pipe 10 and then flow into the first-stage sorting system or the second-stage sorting system, and the sand sorting device further comprises a first-stage mode and a second-stage mode switching system, and the first-stage mode and the second-stage mode switching system control the sand particles flowing out of the material separating pipe 10 to flow into the first-stage sorting system or the second-stage sorting system;

thus, after the sand particles flow out of the material separating pipe 10, the sand particles can enter a primary separation system or a secondary separation system for classification screening through the selection of the primary mode conversion system and the secondary mode conversion system.

In the specific embodiment, the device also comprises a frame, wherein the frame comprises a base 23 which is horizontally arranged, and a material conveying cylinder support, a pulley block support 25, a material conveying pipe joint support 26 and a vibration system support 11 which are used for supporting a material conveying cylinder are respectively arranged on the base 23 from left to right along the horizontal direction;

an oscillating rack 37 is arranged in the oscillating system support bracket 11, and a primary sorting system and a secondary sorting system are arranged on the inner side of the oscillating rack 37; the tail end of the distributing pipe 10 is horizontally arranged at the upper end part of the vibration system supporting bracket 11. Fig. 9 shows a structural diagram of the oscillating frame 37.

As shown in fig. 1, the first-stage sorting system selected in this embodiment includes: the swinging frame 6 and the primary screen support frame 7 are connected, the primary screen support frame 7 is positioned below the sand outflow end of the material separating pipe 10, the swinging frame 6 is connected with the steel wire rope 5, and the included angle between the primary screen support frame 7 and the sand outflow direction from the material separating pipe 10 is controlled by the tension of the steel wire rope 5; the primary screen support frame 7 is provided with a primary screen.

Like this, wire rope 5 is through exerting pulling force to swing frame 6 and is adjusted the contained angle of one-level screen cloth support frame 7 and sand grain from dividing material pipe 10 outflow direction, owing to be provided with one-level screen cloth on the one-level screen cloth support frame 7, the sand grain is from dividing material pipe 10 after flowing out to fall to the one-level screen cloth that sets up on the one-level screen cloth support frame 7 and carry out the one-level screening of sand grain.

Optionally, the first-stage screen support frame 7 is provided with a first strip-shaped opening 43, a first bead sleeve 45 is arranged on the side wall of the first strip-shaped opening 43, and the swinging frame 6 can move in the first strip-shaped opening 43 through the first movable shaft 42. Like this, when wire rope 5 pulling swing frame 6, slide through first loose axle 42 in the first bar opening 43 that is equipped with first close pearl cover 45 between swing frame 6 and the one-level screen cloth support frame 7 and come the pulling one-level screen cloth support frame, finally realize the change of one-level screen cloth support frame 7 inclination like this, adjusted the contained angle of one-level screen cloth support frame 7 and sand grain from dividing the material pipe 10 outflow direction, the contained angle is different, the screening effect of sand grain can be different. The embodiment realizes the maximization of the primary separation efficiency through the primary separation system.

The first-stage sorting system further comprises a first connecting rod 12 and a second connecting rod 13, one end of the first connecting rod 12 is connected with the middle of the first-stage screen support frame 7 through a movable hinge, the other end of the first connecting rod 12 is connected with the second connecting rod 13 through a movable hinge, the other end of the second connecting rod 13 is connected with the oscillating rack 37 through a movable hinge, the first connecting rod 12, the second connecting rod 13, the oscillating rack 37 and the first-stage screen support frame 7 form a parallelogram structure, and the first connecting rod 12 is parallel to the oscillating rack 37. The addition of the parallelogram structure increases the stability of the primary sorting system.

As shown in fig. 2, the two-stage sorting system includes: the second-stage screen support frame 31 is arranged on the oscillating frame 37, a second-stage screen is arranged on the second-stage screen support frame 31, and the second-stage screen support frame 31 is connected with the steel wire rope 5 through a second movable shaft 40. Specifically, the secondary screen support 31 of this embodiment includes a secondary screen upper support 31-1 and a secondary screen lower support 31-2, and when a horizontal left tension is applied to the secondary screen support 31 by the wire rope, an included angle between the secondary screen upper support 31-1 and the secondary screen lower support 31-2 is an acute angle; when the wire rope does not exert a horizontal leftward pulling force on the secondary screen support frame 31, the angle between the secondary screen upper support frame 31-1 and the secondary screen lower support frame 31-2 is 180 °. The secondary screen support 31 is provided with a secondary screen.

The second bar-shaped opening 41 is arranged on the second screen upper support frame and the second screen lower support frame, the second dense bead sleeve 44 is arranged on the side wall of the second bar-shaped opening 41, the steel wire rope is connected with the second movable shaft 40, and the second movable shaft 40 can move in the second bar-shaped opening 41.

The working principle of the secondary sorting system in the specific embodiment is as follows: when the steel wire rope does not apply horizontal left pulling force to the secondary screen support frame 31, the secondary screen upper support frame 31-1 and the secondary screen lower support frame 31-2 are positioned in the same vertical direction and are arranged on the inner side of the oscillating frame 37, and the secondary screening system does not have a screening function; when the steel wire rope applies horizontal left pulling force to the secondary screen support frame 31, the included angle between the secondary screen upper support frame 31-1 and the secondary screen lower support frame 31-2 is an acute angle, namely, the secondary screen upper support frame, the secondary screen lower support frame and the oscillating frame are in a triangular structure, and the secondary screen separation system has the function of screening sand grains at this time and can adjust the included angle between the secondary screen upper support frame and the secondary screen lower support frame within a limited range. Along with the different angles of included angles between the upper support frame of the second-level screen and the lower support frame of the second-level screen, the screening degree of the second-level screening system on sand particles can be adjusted within a certain range.

In addition, the upper support frame of the secondary screen and the lower support frame of the secondary screen are respectively connected with the oscillating frame 37 through a return spring, and when the tension of the steel wire rope 5 to the upper support frame 31 of the secondary screen is gradually reduced, the upper support frame of the secondary screen and the lower support frame of the secondary screen can restore to an initial state which is positioned in the same vertical direction and is positioned at the inner side of the oscillating frame 37 through the return springs.

According to the embodiment, the primary sorting system and the secondary sorting system can be integrated together in one device through the primary and secondary mode conversion system, whether sand particles pass through the primary sorting system or the secondary sorting system is controlled according to actual conditions, and finally, the classified screening of the sand particles is realized.

The primary and secondary mode conversion system includes: the pulley block component is used for changing the tension direction of the steel wire rope 5, and the power winding and unwinding component is used for controlling winding and unwinding of the steel wire rope 5, and the pulley block component is connected with the power winding and unwinding component through the steel wire rope 5.

The concrete implementation mode also comprises a frame, wherein the frame comprises a base 23 which is horizontally arranged, a material conveying cylinder support, a pulley block support 25, a material conveying pipe joint support 26 and a vibration system support 11 which are used for supporting the material conveying cylinder are respectively arranged on the base 23 from left to right along the horizontal direction, the height of the material conveying pipe joint support is smaller than that of the pulley block support, and a sand basket 1 is fixed on a sand basket support;

the primary sorting system and the secondary sorting system are both arranged on the inner side of the oscillating frame 37, and the tail end of the sorting pipe 10 is horizontally arranged on the upper end part of the oscillating system supporting bracket 11.

The pulley block component comprises a first fixed pulley 4, a second fixed pulley 14, a third fixed pulley 16, a fourth fixed pulley 15, a fifth fixed pulley 17, a sixth fixed pulley 18, a movable pulley 21 and a seventh fixed pulley 20, wherein the first fixed pulley 4 is fixed at the upper end part of the conveying pipe joint bracket;

the base 23 is provided with a rectangular pulley bracket, the third fixed pulley 16, the fifth fixed pulley 17 and the sixth fixed pulley 18 are respectively arranged on the base 23 from right to left, the fourth fixed pulley 15 is arranged outside one side of the rectangular pulley bracket opposite to the base 23, the seventh fixed pulley 20 is arranged inside one side of the rectangular pulley bracket opposite to the base 23, a movable pulley 21 is arranged between the sixth fixed pulley 18 and the seventh fixed pulley 20, and the seventh fixed pulley 20 is arranged above the sixth fixed pulley 18;

the wire rope 5 is connected to the second movable shaft 40 after passing through the first fixed pulley 4, the sixth fixed pulley 18, the movable pulley 21, the seventh fixed pulley 20, the power take-up and pay-off member, the fifth fixed pulley 17, the third fixed pulley 16, and the fourth fixed pulley 15 in this order from the end portion of the wire rope connected to the swing frame 6. Because the sand carrying amount of the screen is large under the working condition of the primary separation mode, the pulley block can reduce the pulling force of the primary separation system by half. Under the working condition of the secondary screening mode, the second fixed pulley 14 can enable the secondary screen support frame to be pulled out better, the pulling force direction is changed through other pulleys, and the second fixed pulley is connected with the power winding and unwinding component through a steel wire rope.

The power winding and unwinding components comprise a first belt pulley 19, a second belt pulley 22, a steel wire rope winding and unwinding shaft 39 and a stepping motor which are arranged on the base 23, wherein the first belt pulley 19 is arranged on the steel wire rope winding and unwinding shaft 39 in a key fit manner, the second belt pulley 22 is arranged on a motor shaft of the stepping motor in a key fit manner, and the first belt pulley 19 is connected with the second belt pulley 22 through a V belt 38;

the wire rope winding and unwinding shaft 39 comprises a relatively outward thick position 39-2 and a relatively inward thin position 39-1, the wire rope from the seventh fixed pulley 20 is fixedly connected with the relatively outward thick position 39-2, and the wire rope from the fifth fixed pulley 17 is fixedly connected with the relatively inward thin position 39-1.

Specifically, in this embodiment, a stepping motor is selected, under the condition that the stepping motor does not work, the first-stage sorting system or the second-stage sorting system is unchanged in the adjusted position, the second belt pulley is mounted on a motor shaft of the stepping motor through key matching and locked by a locknut on the outer portion of the motor shaft, the first belt pulley is mounted on a wire rope winding and unwinding shaft through key matching and locked by a locknut on the outer portion of the motor shaft, the first belt pulley is connected with the second belt pulley through a V belt, deep groove ball bearings are mounted at two ends of the wire rope winding and unwinding shaft and mounted in bearing supports on a base, the wire rope from the seventh fixed pulley is fixedly connected to the relatively outward thick position of the wire rope winding and unwinding shaft, and the wire rope from the fifth fixed pulley is fixedly connected to the relatively inward thin position of the wire rope, so that the power winding and unwinding component is formed. When the stepping motor rotates reversely or clockwise, the inclination angle of the first-stage screen can be adjusted, so that the first-stage sorting system can obtain the maximum sorting efficiency; when the sand screening in the secondary mode is needed, the stepping motor only needs to rotate clockwise at the moment, when the sand screening in the secondary mode rotates to a certain extent, the secondary screening system is pulled out through the steel wire rope to form secondary screening, and the inclination angle of the secondary screen can be adjusted through the reverse clockwise rotation of the stepping motor at the position so as to obtain the maximum screening efficiency. The thickness design of the steel wire rope winding and unwinding shaft is used for ensuring that the secondary sorting system does not interfere with the primary sorting system when being pulled out, and the primary sorting system does not work when the secondary sorting system works.

The vibration system includes: the motor shaft of the speed regulating motor 32 is fixedly connected with the crank 34 through the coupler 33, the crank 34 is connected with the crank connecting rod 35 through a movable hinge, the crank connecting rod 35 is connected with the connecting sleeve 36 through a movable hinge, and the connecting sleeve 36 is fixedly connected with the oscillating frame 37 through a set screw.

Like this, vibration system is connected with the vibration frame through speed governing motor, crank connecting rod, adapter sleeve to drive the vibration frame and vibrate, and then make first order sorting system and second grade sorting system carry out the screening of sand grain through the vibration.

The sand basket comprises a sand basket body and is characterized by further comprising a traveling system, wherein the traveling system comprises a directional wheel 28 and a universal wheel 27 which are arranged below the base 23, the universal wheel 27 is arranged below the sand basket body 1, a locking device is arranged at the rear end of the directional wheel 28, the locking device comprises a hand wheel 29 arranged above the base and a locking disc 30 arranged below the base, and screw transmission is carried out between the hand wheel 29 and the locking disc 30 through screws. In this embodiment, make the device remove through universal wheel and directional wheel, conveniently handle the sand grain after sorting to in making the work of whole device, the position is unchangeable, avoids taking place the mixture of separated sand grain and sand grain, and guarantees the security of work, still is provided with locking device in this embodiment, including setting up the hand wheel 29 in the base top and setting up the locking dish 30 in the base below, through screw rod screw drive between hand wheel 29 and the locking dish 30.

The specific embodiment also comprises a sand falling system for collecting the sorted sand grains, so that the sorted sand grains are transported by the sand falling system, and the whole device can continuously work.

Working principle:

1. pushing the whole sorting device to a working position, rotating a hand wheel to enable a locking disc to be grounded, and fixing the locking disc to the working position;

2. pouring sand grains to be sorted into a sand basket by the small loader, and enabling the sand grains to be sorted to enter a conveying system through a second material conveying pipe under the action of dead weight under the action of an inner inclined plane and a wave crest inclined plane of the sand basket;

3. sand grains to be sorted enter a material conveying cylinder, are conveyed upwards under the action of an auger, are discharged from a first material conveying pipe, reach a material distributing pipe through a material conveying pipe joint, and then enter a sorting system;

4. when the primary sorting system is selected, the position of the sorting pipe is unchanged, the right end of the sorting pipe is horizontally placed on a support bracket of the vibrating system, a speed regulating motor is driven to start moving through a crank sliding block mechanism to drive the oscillating rack to vibrate, sand to be sorted falls onto the primary sorting screen, downward movement is obtained under the inclined surface structure of the sand to be sorted, and in addition, a vibration state is formed to reciprocate along the inclined surface, when the primary sorting mode is used, a stepping motor is driven to rotate in a certain range, a steel wire rope winding and unwinding shaft is connected with a coarse part to wind up ropes in a fine part or connected with the fine part to wind up ropes in the coarse part to connect with a swinging frame through a pulley block, and the proper inclination angle is selected to maximize sorting efficiency. When the pulley block is driven to change the inclination angle of the first-stage separation screen, the second movable shaft moves in the vertical direction in the second-stage separation screen upper support frame and the second-stage separation screen lower support frame. When the secondary sorting mode is used, the primary sorting operation is stopped, the sorting pipe rotates 180 degrees, sand particles to be sorted can fall onto the secondary sorting upper screen, the stepping motor is driven to rotate clockwise, the wire rope reeling and unreeling shaft thin part is reeled in a rope reeling and unreeling mode, when the second movable shaft moves to the center position, the wire rope reeling and unreeling shaft thin part is driven to rotate clockwise, the wire rope reeling and unreeling shaft thin part is continued in a rope unreeling mode, the secondary sorting system is pulled out and pulled to the maximum position, sand particles to be sorted fall onto the secondary sorting upper screen through the sorting pipe, sand particles can form downward reciprocating curve motion on the secondary sorting upper screen, sand particles sorted through the secondary sorting upper screen enter the secondary sorting lower screen, small-size sand particles are continuously sorted, large-size sand particles flow out from the upper surface of the secondary sorting lower screen, small-size sand particles fall down from the lower screen at the moment, and larger sand particles flow out from the surface of the secondary sorting upper screen, and two different sand particles are obtained. The stepping motor is driven to drive the steel wire rope winding and unwinding shaft to be connected to the thick part for winding and unwinding the rope and to be connected to the thin part for winding and unwinding the rope and to be connected to the thick part for winding and unwinding the rope, so that the included angle between the secondary sorting upper screen and the secondary sorting lower screen is adjusted, and the maximum sorting efficiency is obtained. The sorting efficiency can also be improved through proper speed ratio between the speed regulating motors.

5. In the first-stage sorting working mode, the sorted sand grains enter the right half part of the sand falling track, and larger stone grains fall into the left half part of the sand falling track and then are discharged to the outside of the whole device; under the second-stage sorting working mode, larger stone grains fall into the leftmost part of the sand falling track, sorted small-specification sand grains fall into the middle part of the sand falling track, sorted large-specification sand grains fall into the rightmost part of the sand falling track, and then the large-specification sand grains are discharged to the outside of the whole device.

Claims

1. The sand sorting device for the multi-stage building comprises a frame, a sand basket (1), a material conveying cylinder (2), a first material conveying pipe (8-1), a second material conveying pipe (8-2), a material separating pipe (10), a first-stage sorting system and a second-stage sorting system, wherein sand sequentially passes through the sand basket (1), the second material conveying pipe (8-2), the material conveying cylinder (2), the first material conveying pipe (8-1) and the material separating pipe (10) and then flows into the first-stage sorting system or the second-stage sorting system, and the sand sorting device is characterized by further comprising a first-stage mode conversion system and a second-stage mode conversion system, wherein the first-stage mode conversion system and the second-stage mode conversion system control sand flowing out of the material separating pipe (10) to flow into the first-stage sorting system or the second-stage sorting system;

the machine frame comprises a base (23) which is horizontally arranged, a vibration system supporting bracket (11) is arranged on the base (23), an oscillating machine frame (37) is arranged in the vibration system supporting bracket (11), and a primary sorting system and a secondary sorting system are arranged on the inner side of the oscillating machine frame (37); the primary sorting system includes: the sand grain separating device comprises a swinging frame (6) and a primary screen support frame (7), wherein the swinging frame (6) is connected with the primary screen support frame (7), the primary screen support frame (7) is positioned below the sand grain outflow end of a separating pipe (10), the swinging frame (6) is connected with a steel wire rope (5) and controls an included angle between the primary screen support frame (7) and the sand grain flowing out direction from the separating pipe (10) through the tension of the steel wire rope (5), and a primary screen is arranged on the primary screen support frame (7);

the secondary sorting system comprises: the two-stage screen support frame (31) is arranged on the oscillating frame (37), the two-stage screen support frame (31) comprises two-stage screen upper support frames and two-stage screen lower support frames, two-stage sorting upper screens are arranged on the two-stage screen upper support frames, two-stage sorting lower screens are arranged on the two-stage screen lower support frames, second strip-shaped openings (41) are formed in the two-stage screen upper support frames and the two-stage screen lower support frames, a second movable shaft (40) is arranged in the two second strip-shaped openings (41) in a penetrating mode, and the steel wire rope (5) is connected with the second movable shaft (40); when the steel wire rope (5) does not apply horizontal left pulling force to the second movable shaft (40), an included angle between the upper support frame of the secondary screen and the lower support frame of the secondary screen is kept to be 180 degrees, and when the steel wire rope (5) applies horizontal left pulling force to the second movable shaft (40), the second movable shaft (40) moves in the second strip-shaped opening (41) so that the included angle between the upper support frame of the secondary screen and the lower support frame of the secondary screen becomes an acute angle; when the secondary screening system is required to work, the screening pipe (10) is rotated for 180 degrees, so that the sand particle outflow end of the screening pipe (10) is right opposite to the secondary screen support frame (31);

the primary and secondary mode conversion system includes: the pulley block component is used for changing the tension direction of the steel wire rope (5), and the power winding and unwinding component is used for controlling the winding and unwinding of the steel wire rope (5), and the pulley block component is connected with the power winding and unwinding component through the steel wire rope (5); the device also comprises a vibration system for driving the vibration frame (37) to vibrate so as to vibrate the primary sorting system or the secondary sorting system.

2. The multistage construction sand sorting device according to claim 1, wherein the base (23) is provided with a feed cylinder support for supporting a feed cylinder, a pulley block support (25), a feed pipe joint support (26) and a vibration system support (11) from left to right in the horizontal direction; the tail end of the material dividing pipe (10) is horizontally arranged at the upper end part of the vibration system supporting bracket (11).

3. The multistage construction sand sorting device according to claim 1, characterized in that a first strip-shaped opening (43) is arranged on the first stage screen support frame (7), a first bead sleeve (45) is arranged on the side wall of the first strip-shaped opening (43), and the swinging frame (6) can move in the first strip-shaped opening (43) through a first movable shaft (42); the first-stage sorting system further comprises a first connecting rod (12) and a second connecting rod (13), one end of the first connecting rod (12) is connected with the middle of the first-stage screen support frame (7), the other end of the first connecting rod (12) is connected with the second connecting rod (13), the other end of the second connecting rod (13) is connected with the oscillating rack (37), the first connecting rod (12), the second connecting rod (13), the oscillating rack (37) and the first-stage screen support frame (7) form a parallelogram structure, and the first connecting rod (12) is parallel to the oscillating rack (37).

4. The multistage construction sand sorting device according to claim 1, wherein a second bead cover (44) is provided on the side wall of the second strip-shaped opening (41), and the second screen upper support frame and the second screen lower support frame are respectively connected with the oscillating frame (37) through a return spring.

5. The multistage construction sand sorting device according to claim 1, characterized in that the pulley block component comprises a first fixed pulley (4), a second fixed pulley (14), a third fixed pulley (16), a fourth fixed pulley (15), a fifth fixed pulley (17), a sixth fixed pulley (18), a movable pulley (21), a seventh fixed pulley (20), the first fixed pulley (4) being fixed at the upper end of a pipe joint bracket;

the base (23) is provided with a rectangular pulley bracket, the third fixed pulley (16), the fifth fixed pulley (17) and the sixth fixed pulley (18) are respectively arranged on the base (23) from right to left, the fourth fixed pulley (15) is arranged on the outer side of one side, opposite to the base (23), of the rectangular pulley bracket, the seventh fixed pulley (20) is arranged on the inner side of one side, opposite to the base (23), of the rectangular pulley bracket, a movable pulley (21) is arranged between the sixth fixed pulley (18) and the seventh fixed pulley (20), and the seventh fixed pulley (20) is arranged above the sixth fixed pulley (18);

the steel wire rope (5) is connected with the end part of the swinging frame (6) from the end part, and sequentially passes through a first fixed pulley (4), a sixth fixed pulley (18), a movable pulley (21), a seventh fixed pulley (20), a power winding and unwinding component, a fifth fixed pulley (17), a third fixed pulley (16) and a fourth fixed pulley (15) and then is connected with a second fixed pulley (14) arranged on a second movable shaft (40).

6. The multistage construction sand sorting device according to claim 5, wherein the power take-up and pay-off component comprises a first pulley (19), a second pulley (22), a wire rope take-up and pay-off shaft (39) and a stepping motor which are arranged on the base (23), the first pulley (19) is mounted on the wire rope take-up and pay-off shaft (39) through key fit, the second pulley (22) is mounted on a motor shaft of the stepping motor through key fit, and the first pulley (19) is connected with the second pulley (22) through a V belt (38);

the steel wire rope winding and unwinding shaft (39) comprises a relatively outward thick position (39-2) and a relatively inward thin position (39-1), the steel wire rope (5) from the seventh fixed pulley (20) is fixedly connected at the relatively outward thick position (39-2), and the steel wire rope (5) from the fifth fixed pulley (17) is fixedly connected at the relatively inward thin position (39-1); the thickness design of the steel wire rope winding and unwinding shaft (39) can ensure that the secondary sorting system does not interfere with the primary sorting system when being pulled out, and the primary sorting system does not work when the secondary sorting system works.

7. The multistage architectural sand sorting device of claim 1, wherein the vibration system comprises: crank connecting rod (35), crank (34), shaft coupling (33), speed governing motor (32), the motor shaft of speed governing motor (32) links firmly with crank (34) through shaft coupling (33), and crank (34) link to each other through movable hinge with crank connecting rod (35), and crank connecting rod (35) link to each other through movable hinge with adapter sleeve (36), and adapter sleeve (36) link firmly with oscillating frame (37) through holding screw.

8. The multistage construction sand sorting device according to claim 1, further comprising a running system comprising a directional wheel (28) and a universal wheel (27) arranged below the base (23), wherein the universal wheel (27) is arranged below the sand basket (1), the rear end of the directional wheel (28) is provided with a locking device, the locking device comprises a hand wheel (29) arranged above the base and a locking disc (30) arranged below the base, and the hand wheel (29) is connected with the locking disc (30) through screw transmission.