CN111687044B - Gravel and sand centrifugation screening equipment for building engineering - Google Patents

Gravel and sand centrifugation screening equipment for building engineering Download PDF

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Publication number
CN111687044B
CN111687044B CN202010568749.1A CN202010568749A CN111687044B CN 111687044 B CN111687044 B CN 111687044B CN 202010568749 A CN202010568749 A CN 202010568749A CN 111687044 B CN111687044 B CN 111687044B
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China
Prior art keywords
cylinder
opening
coaxially
sand
fixed
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Chinese (zh)
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CN111687044A (en
Inventor
杨木俭
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Tajiang Construction Co ltd
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Tajiang Construction Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/04—Heating arrangements using electric heating
    • F26B23/06—Heating arrangements using electric heating resistance heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/14—Sand

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Food Science & Technology (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention provides a sand and stone centrifugal screening device for construction engineering, which comprises a rectangular hollow frame capable of traveling, a separating device and a conveying device, wherein one end of the frame in the length direction is the front end in the traveling direction, the other end of the frame in the length direction is the rear end in the traveling direction, the separating device is fixedly arranged on the upper end face of the frame and is arranged close to the front end of the frame, the conveying device is fixedly arranged on the upper end face of the frame and is arranged close to the rear end of the frame, the conveying device is used for supplying sand and stone to the separating device, the separating device is used for carrying out drying centrifugal separation treatment on the sand and stone and firstly discharging the sand and then discharging the stone outwards, the separating device comprises a sieve tray with a tray bottom capable of being opened upwards in a floating mode, the sieve tray is driven to rotate to sieve out the sand and enable a sieve to be discharged outwards, then, the sieve tray bottom of the sieve tray is opened to discharge the stone, and meanwhile an air drying mechanism and a heater can be used for drying a sand and stone mixture.

Description

Gravel and sand centrifugation screening equipment for building engineering
Technical Field
The invention relates to the technical field of sand and stone separation, in particular to sand and stone centrifugal screening equipment for constructional engineering.
Background
In the building industry, a sand and stone separating device is one of the devices which are frequently used, the sand and stone separating device is one of the devices for separating sand from stones, and along with the development of science and technology, various sand and stone separating devices appear in the market. Through the applicant search discovery a chinese utility model patent "a dustless formula sand stone separating centrifuge", its patent number is CN205613680U, and it includes pan feeding mouth, universal auto-lock wheel and control panel, and affiliated pan feeding mouth is installed in the left side of shell body, the inside of shell body is provided with the cylinder, the surface of cylinder be provided with the wire netting, the surface of shell body is provided with out husky mouth, control panel fixed mounting is on the right side of going out husky mouth, realizes the separation to sand and stone through the rotation of cylinder. The sand-gravel separation device has the disadvantages that 1, sand and stones are mostly located outdoors, the sand and stones are easy to be wet and are adhered to each other to form blocks, and the sand and stones are difficult to be fully filtered and separated; 2. a large amount of sand is adhered to the stones, so that the waste of sand resources is caused; 3. the wet sand is easy to block the meshes of the wire netting, so that the wire netting loses the sand screening function; 4. the discharge of stones is inconvenient, manual operation is needed, and the sand and stone separation efficiency is reduced. In order to overcome the defects in the prior art, the sand and stone centrifugal screening equipment for the building engineering is simple and reliable in principle and has the functions of automatic drying and automatic material discharging.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide the sand and stone centrifugal screening equipment for the building engineering, which has a simple and reliable principle and has the functions of automatic drying and automatic discharging, and aims to solve the technical problems that sand and stone are easy to moisten, are adhered to each other to form blocks and are difficult to fully filter and separate in the prior art.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
A sand and stone centrifugal screening device for building engineering comprises a rectangular hollowed-out rack capable of advancing, a separating device and a conveying device, wherein one end of the rack in the length direction is the front end of the advancing direction, the other end of the rack in the length direction is the rear end of the advancing direction, the separating device is fixedly arranged on the upper end face of the rack and is close to the front end of the rack, the conveying device is fixedly arranged on the upper end face of the rack and is close to the rear end of the rack, the conveying device is used for supplying sand and stone to the separating device, and the separating device is used for carrying out drying centrifugal separation treatment on the sand and stone, discharging sand outwards at first and then discharging the stone outwards;
the separating device comprises a cylindrical fixed cylinder which is fixedly arranged on the upper end face of the rack and is provided with an opening vertically and upwards, a fixed ring is coaxially and fixedly arranged on the inner circular face of the fixed cylinder, the fixed ring is positioned in the middle of the fixed cylinder along the height direction of the fixed cylinder, a truncated cone-shaped screen disc with an opening vertically and upwards arranged is coaxially and rotatably arranged in the fixed cylinder and can be heated, the screen disc is sleeved in the fixed ring and forms rotating connection and matching with the fixed ring, the opening of the screen disc is gradually increased along the vertical direction from bottom to top, the screen disc comprises a truncated cone-shaped steel screen mesh, an external boss, an internal boss and a disc bottom capable of floating up and down, the screen mesh is a truncated cone-shaped steel wire mesh structure with openings at the upper end and the lower end, an acute included angle formed by a conical bus of the screen and an axis is 65-75 degrees, the external boss is an annular body and is coaxially and fixedly connected with an outer circular disc surface at the opening at the upper end of the screen mesh, the internal boss is an annular body and is coaxially and is fixedly connected with an inner circular disc bottom at the lower end opening of the annular body and can be sealed off the acute included angle formed by the internal cone-shaped steel mesh structure, and the internal boss, the internal cone-80 degrees of the internal cone-shaped screen disc bottom and the internal cone-shaped conical structure, the internal cone-shaped conical seal the internal cone-up sealing structure is formed by the internal cone-up acute included angle formed by the internal boss, and the internal cone-up sealing structure, and the internal cone-up acute included angle of the internal boss.
As a further optimization or improvement of the present solution.
But solid fixed ring's up end inlays and is equipped with rolling ball, the ball is provided with a plurality ofly and arrange along solid fixed ring place circumferencial direction array, external boss is located solid fixed ring's top and the ball cooperates the lower terminal surface of external boss and solid fixed ring's up end roll connection, external boss is laminated mutually with the interior disc of solid fixed cylinder, coaxial fixed annular electric heater that is provided with on solid fixed ring's the interior disc, the heater contacts with the screen cloth and can be with heat quick conduction to the screen cloth, built-in boss and the end of a plate, the screen cloth, built-in boss and end of a plate are the material that the thermal conductivity is good and make.
As a further optimization or improvement of the present solution.
The upper end face of the built-in boss is provided with a triangular-structure meshing groove which penetrates through the inner circular face of the built-in boss, the meshing groove is provided with a plurality of meshing blocks which are arranged in an array mode along the circumferential direction where the built-in boss is located, the diameter of the disc bottom is equal to that of the inner circular face of the built-in boss, the outer circular face of the disc bottom is fixedly provided with a triangular-structure meshing block which protrudes outwards in the radial direction, the meshing blocks are matched with the meshing groove, the meshing blocks are arranged in an array mode along the circumferential direction where the disc bottom is located and correspond to the meshing grooves in a one-to-one mode, the meshing blocks are combined with the meshing groove in the initial state, the disc bottom and the screen cloth can rotate synchronously, and a through hole which penetrates through the built-in boss up and down is formed in the groove bottom of the meshing groove.
As a further optimization or improvement of the present solution.
The fixed cylinder internal fixation is provided with the oblique board of arranging of slope, the contained angle that constitutes between oblique board and the horizontal plane is between 45 to 60, it cuts apart into two upper and lower independent cavities with the fixed cylinder to put the board to one side, it is located the below of sieve tray to put the board to one side, the fixed row who is provided with the slope and arranges downwards on the outer disc of fixed cylinder fights, arrange the bin hopper and put the slope lower extreme of board to one side to align and both inclination directions, the angle is unanimous, arrange the front end of the directional frame of slope lower extreme of fighting and putting the board to one side, set up the bin outlet of the inside and outside rectangle that runs through on the outer disc of fixed cylinder, the bin outlet is located between oblique board and the bin hopper and is connected the switch-on with the slope upper end of arranging the slope lower extreme of oblique board and arranging the bin hopper, the both sides fixed mounting who arranges the bin has the vibrator.
As a further optimization or improvement of the present solution.
Separator still including the coaxial air-dry mechanism that sets up in the solid fixed cylinder top, the coaxial actuating mechanism that sets up in the solid fixed cylinder and be located the sieve tray below, the upper end of air-dry mechanism is input and conveyor's output link, the lower extreme is the output and the output is located the sieve tray open-ended directly over, air-dry mechanism is used for falling by its input to the gravel and sand mixture between the output air-dry processing and will air-dry the even discharge of gravel and sand to the sieve tray of back, actuating mechanism is used for the drive plate to rotate around self axis direction at the bottom of the drive plate or the drive plate is at the bottom of upwards floating along self axis direction.
As a further optimization or improvement of the present solution.
The air drying mechanism comprises a cylindrical step-shaped thin-wall air drying cylinder which is coaxial with the fixed cylinder and fixedly connected with an opening of the fixed cylinder, openings at the upper end and the lower end of the air drying cylinder are arranged, a cylindrical funnel is coaxially and fixedly arranged at the opening of the upper end of the air drying cylinder, the opening of the funnel is gradually reduced from top to bottom along the vertical direction, a rotating shaft is coaxially and rotatably arranged in the air drying cylinder, three groups of fan assemblies are coaxially and fixedly sleeved on the rotating shaft, the fan assemblies are arranged in an equidistant array along the axial direction of the rotating shaft, each fan assembly comprises a sleeve coaxially and fixedly sleeved on the rotating shaft and blades fixedly connected with the outer circular surface of the sleeve, each blade is of a rectangular thin-wall plate body structure, one end of each blade is fixedly connected with the outer circular surface of the sleeve, the other end of each blade extends to the inner circular surface of the air drying cylinder, the length directions of the blades are arranged along the radial direction of the sleeve, the included angles formed between the widths of the blades and the horizontal planes are 45 degrees, and the blades are arranged in an array along the circumferential direction where the sleeves are located;
the air drying cylinder comprises a bottom cylinder, an intermediate cylinder and a top cylinder which are sequentially connected and communicated from bottom to top, the diameters of the bottom cylinder, the intermediate cylinder and the top cylinder are sequentially reduced, the inner diameter of the bottom cylinder is equal to that of an opening of the screen disc, the bottom cylinder and the top cylinder are coaxially arranged, an opening at the lower end of the bottom cylinder is an output end of the air drying mechanism, a funnel is connected and communicated with an opening at the upper end of the top cylinder and is an input end of the air drying mechanism, the fan assemblies are respectively positioned at the middle position of the bottom cylinder along the height direction of the bottom cylinder, the middle position of the intermediate cylinder along the height direction of the intermediate cylinder and the middle position of the top cylinder along the height direction of the top cylinder, blades positioned in the bottom cylinder extend to the inner circular surface of the bottom cylinder, blades positioned in the intermediate cylinder extend to the inner circular surface of the intermediate cylinder, and blades positioned in the top cylinder extend to the inner circular surface of the top cylinder;
the center of the upper opening of the top cylinder is provided with a conical fixed block, the upper end face of the fixed block is arranged in a sharp shape, the lower end face of the fixed block is arranged in a horizontal shape, connecting arms for fixedly connecting the outer circular face of the fixed block and the inner circular face of the upper opening of the top cylinder are arranged between the outer circular face of the fixed block and the inner circular face of the upper opening of the top cylinder, four connecting arms are arranged and arranged in an array manner along the circumferential direction of the top cylinder, a blanking port is formed between every two adjacent connecting arms, and the top end of the rotating shaft is in rotating connection and matching with the lower end face of the fixed block through a bearing;
the bottom cylinder is located above the fixed cylinder, an air inlet is formed between the bottom cylinder and the fixed cylinder, a Z-shaped supporting leg is fixedly connected with the bottom cylinder at the lower end opening and the upper end opening of the fixed cylinder, one end of the supporting leg is fixedly connected with the bottom cylinder at the lower end opening through a bolt, the other end of the supporting leg is fixedly connected with the upper end opening of the fixed cylinder through a bolt, the supporting leg comprises two ninety-degree bending positions, one of the bending positions is provided with a first reinforcing rib, the other bending position is provided with a second reinforcing rib, and the supporting legs are provided with a plurality of supporting legs and are arranged in an array mode along the circumferential direction where the bottom cylinder is located.
As a further optimization or improvement of the present solution.
The driving mechanism comprises a sealing cylinder, a main motor and an air cylinder, wherein the upper end and the lower end of the sealing cylinder are sealed, the sealing cylinder is coaxially and fixedly connected with the bottom of the fixed cylinder, one end of the sealing cylinder is positioned below the inclined plate, the other end of the sealing cylinder is positioned above the inclined plate, the main motor is fixedly arranged in the sealing cylinder, an output shaft of the main motor is vertically and upwards coaxially arranged with the sieve tray, the air cylinder is arranged between an output shaft of the main motor and the tray bottom, one end of the air cylinder is coaxially and fixedly connected with the output shaft of the main motor, and the other end of the air cylinder is coaxially and fixedly connected with the tray bottom;
the air cylinder comprises a cylindrical cylinder body and a piston rod, a circular bottom plate which is in sealing connection and matching with the opening at the lower end of the cylinder body is coaxially and fixedly arranged at the opening at the upper end of the cylinder body, and a circular ventilating top plate is coaxially and fixedly arranged at the opening at the upper end of the cylinder body;
the cylinder body is coaxially provided with an annular butt joint groove on the outer circular surface close to the lower end of the cylinder body, the bottom of the butt joint groove is provided with a plurality of air supply holes communicated with the air chamber, the air supply holes are arranged in an array along the circumferential direction of the cylinder body, annular butt joint pipes communicated with the annular butt joint grooves are sleeved at the annular groove openings of the butt joint grooves, the butt joint pipes and the butt joint grooves form sealed rotary connection and matching, and the butt joint pipes are fixed in the sealing cylinder and are communicated with the air pump through an air supply pipe.
As a further optimization or improvement of the present solution.
Be provided with the transmission shaft of connecting both between the lower extreme of dish end and rotation axis, the transmission shaft is the quill shaft and its inside is provided with internal spline, and the lower extreme of transmission shaft is the input and this end and the coaxial fixed connection of the up end of dish end, the upper end of transmission shaft be the output and this end is coaxial cup joints on the lower extreme of rotation axis, is provided with the external spline on the outer disc of the lower extreme of rotation axis, and the external spline combines together with the internal spline and both can slide from top to bottom along vertical direction.
As a further optimization or improvement of the present solution.
The conveying device comprises a mounting frame fixedly arranged on the upper end face of the rack, a first extending frame horizontally extending along the front end of the traveling direction of the rack is fixedly arranged at the top of the mounting frame, a second extending frame horizontally extending along the rear end of the traveling direction of the rack is fixedly arranged at the bottom of the mounting frame, the first extending frame is equal in height to the funnel and is inserted into the funnel from a rectangular opening formed in the outer circular surface of the funnel, a driving roller is rotatably arranged at the joint of the second extending frame and the mounting frame, a driven roller is rotatably arranged at the end part of the extending end of the second extending frame, a driven roller is rotatably arranged at the joint of the first extending frame and the mounting frame, a third extending end part of the first extending frame is rotatably arranged at the end part of the extending end of the first extending frame, the axial directions of the driving roller, the first driven roller, the second driven roller and the third driven roller are all parallel to the width direction of the rack, the driving roller, the first driven roller, the second extending roller and the third driven roller are in winding connection with the conveying belt forming a closed circulation loop, the conveying belt forms a parallelogram inclining towards the conveying belt, a rectangular opening arranged on the fixed hopper, a plurality of hoppers deviated from the conveying belt, and are arranged at equal intervals in the array arrangement along the running direction of the conveying belt;
the conveying device also comprises a conveying motor fixedly arranged on the rack, the axial direction of an output shaft of the conveying motor is parallel to the axial direction of the driving roller, a belt transmission assembly for connecting the output shaft of the conveying motor and the driving roller is arranged between the output shaft of the conveying motor and the driving end of the driving roller, the belt transmission assembly comprises a driving belt wheel coaxially and fixedly sleeved on the output shaft of the conveying motor, a driven belt wheel coaxially and fixedly sleeved on the driving end of the driving roller and a belt wound between the driving belt wheel and the driven belt wheel;
the fixed connecting band and the connecting band of being provided with in bottom of loading hopper arrange along the width direction of conveyer belt, and the connecting band is provided with two side by side and keeps away from the setting each other, connecting band and conveyer belt fixed connection, the bottom of loading hopper and connecting band rigid coupling are as an organic whole and make by the rubber materials of high elasticity.
As a further optimization or improvement of the present solution.
The front wheel comprises a first retainer rotationally connected and matched with the rack and a driving roller rotationally arranged on the first retainer, a hinged shaft formed at the rotational joint of the first retainer and the rack is axially and vertically arranged, a hub motor capable of driving the first retainer is arranged in the driving roller and is powered and driven by a storage battery, the rear wheel comprises a second retainer rotationally connected and matched with the rack and a driven roller rotationally arranged on the second retainer, and the hinged shaft formed at the rotational joint of the second retainer and the rack is axially and vertically arranged;
the fixed baffle that is provided with the downward sloping and arranges in front end of frame, the fixed rectangular plate guardrail that is provided with vertical arrangement in both sides of baffle, the guardrail is relevant to be close to a side and has seted up the draw-in groove, the lower extreme of draw-in groove extends to baffle department, the upper end runs through the backplate, be provided with between two guardrails with draw-in groove joint complex and one end open-ended rectangle pannier, the tip of pannier is pegged graft in the draw-in groove, the opening of pannier upwards arranges along the incline direction of baffle, the lower extreme of arranging the hopper aligns with the slope upper end of baffle.
Compared with the prior art, the invention has the advantages that;
1. the principle is simple and reliable, the heatable sieve tray is used for centrifugally separating sand and stones, and the caking sand and stones can be scattered, air-dried, dried and the like, so that the wet sand and stones are dried, and the problem that the sand and stones are adhered to each other to cause incapability of fully filtering and separating is effectively avoided;
2. the bottom of the sieve tray can float upwards to open, so that stones retained in the sieve tray are automatically discharged outwards, and the sand and stone separation efficiency is greatly improved;
3. the screen tray is intermittently fed by the conveying device, the separation of the sand and the stone which are fed last time is completed within the intermittent feeding time, and the automation degree is high;
4. the complete machine possesses the electronic function of marcing, is convenient for remove with the position of trading the operation, promotes and uses convenience and flexibility.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of the rack.
Fig. 3 is a schematic structural view of the front wheel.
Fig. 4 is a schematic structural view of the rear wheel.
Fig. 5 is a schematic structural view of the towing handle.
Fig. 6 is a matching view of the basket and the frame.
Fig. 7 is a schematic structural view of the separation device.
Fig. 8 is a partial structural view of the separation device.
Fig. 9 is a schematic view of the internal structure of the separation apparatus.
Fig. 10 is a schematic view of the internal structure of the separation apparatus.
Fig. 11 is an exploded view of the screen tray and the stationary canister.
Fig. 12 is a schematic structural view of a sieve tray.
Fig. 13 is a schematic structural view of a sieve tray.
Fig. 14 is a structural diagram of the tray bottom.
Figure 15 is an exploded view of a screen tray.
Fig. 16 is a diagram showing the engagement of the seasoning mechanism with the fixed cylinder.
Fig. 17 is a schematic structural view of the seasoning mechanism.
Fig. 18 is a schematic view of the internal structure of the seasoning mechanism.
Fig. 19 is a schematic view of the internal structure of the seasoning mechanism.
Fig. 20 is a schematic structural diagram of the fan assembly.
Fig. 21 is a schematic structural view of the supporting foot.
Fig. 22 is a schematic structural view of the drive mechanism.
FIG. 23 is a view of the drive mechanism in cooperation with the tray bottom.
Fig. 24 is a schematic structural view of the drive mechanism.
Fig. 25 is a sectional view of the cylinder.
Fig. 26 is a schematic structural view of a driving mechanism for driving the tray bottom to float.
Fig. 27 is a view showing the engagement of the transmission shaft with the rotary shaft and the tray bottom.
Fig. 28 is a view of the delivery device in cooperation with a funnel.
Fig. 29 is a schematic structural view of the conveying device.
FIG. 30 is a schematic view of the hopper construction.
The representation in the figure is:
100. a frame; 101. a front wheel; 101a, a first retainer; 101b, a driving roller; 102. a rear wheel; 102a and a second retainer; 102b, a driven roller; 103. a towing handle; 104. a guide plate; 105. a guardrail; 106. a card slot; 107. a basket; 110. a control panel; 120. a drawer;
200. a separation device; 201. a fixed cylinder; 202. a fixing ring; 202a, a heater; 202b, a ball; 203. a sieve tray; 203a, a screen mesh; 203b, an external boss; 204. a plate bottom; 205a, an engagement groove; 205b, an engagement block; 205c, a via; 206. obliquely placing a plate; 207. a discharge hopper; 208. a vibrator; 209. a discharge outlet; 210. an air drying mechanism; 211. air-drying the cylinder; 211a, a bottom cylinder; 211b, an intermediate cylinder; 211c, a top cylinder; 212. a funnel; 213. a fixed block; 214. a connecting arm; 215. a rotating shaft; 216. a fan assembly; 216a, a sleeve; 216b, a blade; 217. supporting legs; 217a, a first reinforcing rib; 217b and a second reinforcing rib; 220. a drive mechanism; 221. a sealing cylinder; 222. a main motor; 223. a cylinder; 223a, a cylinder body; 223b, a bottom plate; 223c, a top plate; 224. a piston rod; 224a, a piston; 224b, a telescopic rod; 225. a butt joint groove; 226. an air supply hole; 227. butt-joint pipes; 228. a gas supply pipe; 229. a drive shaft;
300. a conveying device; 301. a mounting frame; 301a, an extension frame I; 301b, a second extension frame; 302. a driving roller; 303. a driven roller I; 304. a driven roller II; 305. a driven roller III; 306. a conveyor belt; 307. a hopper; 307a, a connecting band; 308. a conveying motor; 309. a belt drive assembly.
Detailed Description
Referring to fig. 1 to 30, a sand centrifugal screening apparatus for construction engineering comprises a rectangular hollow frame 100, a separating device 200 and a conveying device 300, wherein one end of the frame 100 along the length direction is a front end of the advancing direction, the other end of the frame 100 along the length direction is a rear end of the advancing direction, the separating device 200 is fixedly arranged on the upper end face of the frame 100 and is arranged close to the front end of the frame 100, the conveying device 300 is fixedly arranged on the upper end face of the frame 100 and is arranged close to the rear end of the frame 100, the conveying device 300 is used for supplying sand to the separating device 200, and the separating device 200 is used for performing drying centrifugal separation treatment on the sand and firstly discharging sand outwards and then discharging the sand outwards.
Referring to fig. 10-15, the separating device 200 includes a cylindrical fixed cylinder 201 fixedly disposed on the upper end surface of the frame 100 and having an opening arranged vertically upward, a fixed ring 202 is coaxially and fixedly disposed on the inner circumferential surface of the fixed cylinder 201 and fixedly connected to the inner circumferential surface of the fixed cylinder 201, the fixed ring 202 is located at the middle position of the fixed cylinder 201 along the height direction thereof, a circular truncated cone-shaped sieve tray 203 having an opening arranged vertically upward is coaxially and rotatably disposed in the fixed cylinder 201, the sieve tray 203 can be heated, the sieve tray 203 is sleeved in the fixed ring 202 and rotatably connected to the fixed ring 202, the opening of the sieve tray 203 gradually increases along the vertical direction from bottom to top, the sieve tray 203 is composed of a circular truncated cone-shaped steel sieve mesh 203a, an external boss 203b, an internal boss and a vertically floating tray bottom 204, the sieve mesh 203a is a steel wire mesh structure having an included angle of circular truncated cone shape with both ends opened, a generatrix of the sieve mesh 203a forms an acute angle of 65 ° to 75 ° with the axis, the external boss 203b is an annular body and is coaxially and fixedly connected with the outer circular surface at the opening of the upper end of the screen mesh 203a, the internal boss is an annular body and is coaxially and fixedly connected with the inner circular surface at the opening of the lower end of the screen mesh 203a, the tray bottom 204 and the internal boss are combined in an initial state and seal and block the opening formed at the inner circular surface of the internal boss, the tray bottom 204 can float upwards and relieve the seal and block of the opening formed at the inner circular surface of the internal boss, in order to facilitate the sliding and discharging of stones retained on the tray bottom 204, the upper end surface of the tray bottom 204 is arranged into a conical structure, the sharp end formed by the conical structure is vertically and upwards arranged, the acute included angle formed by the generatrix of the cone on the upper end surface of the tray bottom 204 and the axis is 75-80 degrees, and the sand-stone mixture body generates centrifugal motion by driving the screen tray 203 to rotate, the sand falls and is discharged through the meshes of the screen mesh 203a, the stones are retained in the screen disc 203, the separation of the sand and the stones is realized, after the separation of the sand is finished, the disc bottom 204 is driven to float upwards and is enabled to remove the sealing blockage of the opening formed at the inner circular surface of the built-in boss, and the stones automatically slide towards the edge of the disc bottom 204 and are discharged through the opening formed at the inner circular surface of the built-in boss.
Specifically, referring to fig. 11, rollable balls 202b are embedded in the upper end surface of the fixing ring 202, the balls 202b are provided with a plurality of balls and are arranged in an array along the circumferential direction where the fixing ring 202 is located, the external boss 203b is located above the fixing ring 202, the balls 202b enable the lower end surface of the external boss 203b to be in rolling connection and fit with the upper end surface of the fixing ring 202, the external boss 203b is attached to the inner circular surface of the fixing cylinder 201, an annular electrothermal heater 202a is coaxially and fixedly arranged on the inner circular surface of the fixing ring 202, the heater 202a is in contact with the screen 203a and can rapidly conduct heat to the screen 203a, the internal boss and the tray bottom 204, the screen 203a, the internal boss and the tray bottom 204 are made of materials with good heat conductivity, the screen 203b can roll and support the screen tray 203, the heater 202a can heat the screen tray 203, and the screen tray 203 can dry a wet sand and stone mixture.
Specifically, referring to fig. 15, in order to facilitate the matching and sealing between the disc bottom 24 and the built-in boss, a triangular engaging groove 205a is formed on an upper end surface of the built-in boss, the engaging groove 205a penetrates through an inner circular surface of the built-in boss, the engaging grooves 205 are provided with a plurality of engaging blocks 205a and are arranged in an array along a circumferential direction where the built-in boss is located, the diameter of the disc bottom 204 is equal to the diameter of the inner circular surface of the built-in boss, a triangular engaging block 205b protruding outward along a radial direction of the disc bottom 204 is fixedly arranged on an outer circular surface of the disc bottom 204, the engaging blocks 205b are adapted to the engaging groove 205a, the engaging blocks 205b are arranged in an array along the circumferential direction where the disc bottom 204 is located and correspond to the engaging grooves 205a one by one, the engaging blocks 205b are combined with the engaging groove 205a in an initial state, the disc bottom 204 and the screen mesh 203a can rotate synchronously, and in order to avoid sand accumulated at a bottom of the engaging groove 205a from influencing the engagement between the engaging groove 205a and the engaging blocks 205a, a through hole 205c penetrating through the built-in boss is formed at the bottom of the engaging groove 205 a.
Referring to fig. 10, in order to discharge separated sand and stones to the outside through a fixed cylinder 201, an inclined plate 206 is fixedly disposed in the fixed cylinder 201, an included angle formed between the inclined plate 206 and a horizontal plane is 45 ° to 60 °, the inclined plate 206 divides the fixed cylinder 201 into two independent upper and lower chambers, the inclined plate 206 is disposed below the sieve tray 203, a discharge hopper 207 is fixedly disposed on an outer circumferential surface of the fixed cylinder 201, the discharge hopper 207 is aligned with an inclined lower end of the inclined plate 206, and the inclined direction and the angle of the discharge hopper 207 are the same, the inclined lower ends of the discharge hopper 207 and the inclined plate 206 are directed to the front end of the frame 100, a rectangular discharge port 209 penetrating through the inside and outside is disposed on the outer circumferential surface of the fixed cylinder 201, the discharge port 209 is disposed between the inclined plate 206 and the discharge hopper 207 and connects the inclined lower end of the inclined plate 206 with an inclined upper end of the discharge hopper 207, the discharge hopper 207 and both sides of the vibrator 207 are fixedly disposed with the both sides of the inclined plate 207, the vibrator 208 is beneficial to increasing the discharge rate of sand or stones, and avoiding blocking the discharge rate of sand or stones from the fixed cylinder 201, and discharging stones through the vibrator 207.
Referring to fig. 17, 22 and 26, the separation device 200 further includes an air drying mechanism 210 coaxially disposed above the fixed cylinder 201, and a driving mechanism 220 coaxially disposed in the fixed cylinder 201 and located below the sieve tray 203, an upper end of the air drying mechanism 210 is an input end, an input end of the air drying mechanism is connected to an output end of the conveying device 300, a lower end of the air drying mechanism is an output end, an output end of the air drying mechanism is located right above an opening of the sieve tray 203, the air drying mechanism 210 is configured to air-dry a sand-stone mixture from the input end to the output end of the air drying mechanism and uniformly discharge the air-dried sand-stone into the sieve tray 203, and the driving mechanism 220 is configured to drive the tray bottom 204 to rotate around its axis direction or drive the tray bottom 204 to float upwards along its axis direction.
In the working process of the separation device 200, the conveying device 300 conveys a sand-stone mixture to the input end of the air-drying mechanism 210, the sand-stone mixture vertically falls downwards under the action of self gravity, the sand-stone mixture is subjected to air-drying treatment in the process of falling from the input end to the output end, the first drying treatment is carried out, the sand-stone mixture is discharged from the output end of the air-drying mechanism 210 and falls into the sieve tray 203, the heater 202a carries out heating treatment on the screen mesh 203a, the built-in boss and the tray bottom 204, the sieve tray 203 carries out drying treatment on the sand-stone mixture, the second drying treatment is carried out, meanwhile, the driving mechanism 210 transmits power to the tray bottom 204 and drives the sieve tray bottom 204 to rotate around the axis direction of the driving mechanism, the sand-stone mixture centrifugally moves and rolls up and down along the screen mesh 203a, sand is screened out by the screen mesh 203a, and falls into the upper end face of the inclined plate 206, and the sand passes through the discharge port 209 under the guidance of the inclined plate 206 and enters the discharge hopper 207, and is discharged outwards under the guidance of the discharge hopper 207 until the sand is completely discharged, the stones are retained on the tray bottom 204 of the screen tray 203, finally, the rotation driving of the tray bottom 204 is stopped, the driving mechanism 210 transmits the power to the tray bottom 204 and drives the tray bottom to float upwards along the self axial direction, the tray bottom 204 releases the sealing of the opening formed at the inner circle surface of the built-in boss, the stones slide down to the edge of the tray bottom 204 under the guidance of the conical surface of the upper end surface of the tray bottom 204, the stones discharge the opening formed at the inner circle surface of the built-in boss out of the screen tray 203 and are discharged outwards under the guidance of the inclined plate 206 and the discharge hopper 207, and the beneficial effects are that 1, the principle is simple and reliable, the centrifugal separation is performed on the sand and stones through the heatable screen tray, the treatments of scattering, air drying, and the like can be performed on the agglomerated sand and stones, the wet sand and stones are dried, so that the problem that the sand and the stones are adhered to each other to cause insufficient filtration and separation is effectively avoided; 2. the bottom of sieve tray can upwards float and open, makes the automatic outside discharge of stone that is detained in the sieve tray, has promoted the separation efficiency of gravel and sand greatly.
Referring to fig. 17 to 21, the drying mechanism 210 includes a cylindrical stepped thin-wall drying cylinder 211 coaxial with the fixed cylinder 201 and fixedly connected to an opening of the fixed cylinder, openings of upper and lower ends of the drying cylinder 211 are coaxially and fixedly arranged, and a cylindrical funnel 212 is coaxially and fixedly arranged at an opening of an upper end of the drying cylinder 211, an opening of the funnel 212 is gradually reduced from top to bottom along a vertical direction, a rotating shaft 215 is coaxially and rotatably arranged in the drying cylinder 211, a fan assembly 216 is coaxially and fixedly sleeved on the rotating shaft 215, the fan assembly 216 is provided with three sets and arranged in an equally spaced array along an axial direction of the rotating shaft 215, the fan assembly 216 includes a sleeve 216a coaxially and fixedly sleeved on the rotating shaft 215, blades 216b fixedly connected to an outer circumferential surface of the sleeve 216a, the blades 216b are provided in a rectangular thin-wall plate structure, one end of each blade is fixedly connected to an outer circumferential surface of the sleeve 216a, the other end of each blade extends to an inner circumferential surface of the drying cylinder 211, a length direction of the blades 216b is arranged along a radial direction of the sleeve 216a, an included angle formed between a width of the blade 216b and a horizontal plane is 45 °, the blades 216b are arranged in an array along a circumferential direction, and are arranged to drive the rotating shaft 215 to rotate, so that airflow 216b is formed to quickly drop airflow of the drying cylinder to form a mixture flowing airflow into the drying cylinder from top to bottom.
Specifically, the air drying cylinder 211 comprises a bottom cylinder 211a, an intermediate cylinder 211b and a top cylinder 211c which are sequentially connected and communicated from bottom to top, the diameters of the bottom cylinder 211a, the intermediate cylinder 211b and the top cylinder 211c are sequentially reduced, the inner diameter of the bottom cylinder 211a is equal to that of the opening of the sieve tray 203, the bottom cylinder 211a and the top cylinder 211c are coaxially arranged, the lower end opening of the bottom cylinder 211a is an output end of the air drying mechanism 210, the funnel 212 is connected and communicated with the upper end opening of the top cylinder 211c and is located at an input end of the air drying mechanism 210, the fan assembly 216 is respectively located at the middle position of the bottom cylinder 211a along the height direction, the middle position of the intermediate cylinder 211b along the height direction and the middle position of the top cylinder 211c along the height direction, the blades 216b located in the bottom cylinder 211a extend to the inner circumferential surface of the bottom cylinder 211a, the blades 216b located in the intermediate cylinder 211b extend to the inner circumferential surface of the intermediate cylinder 211b, the blades 216b located in the top cylinder 211c extend to the inner circumferential surface of the top cylinder 211c, the blades 216b rotate to fully break up the air drying mixture, thereby fully drying sand and increasing the flow rate of the mixture.
More specifically, a conical fixing block 213 is arranged at the center of an opening at the upper end of the top cylinder 211c, the upper end face of the fixing block 213 is set to be sharp, the lower end face is set to be horizontal, connecting arms 214 fixedly connecting the fixing block 213 and the top cylinder 211c are arranged between the outer circular face of the fixing block 213 and the inner circular face at the opening at the upper end of the top cylinder 211c, the four connecting arms 214 are arranged in an array along the circumferential direction of the top cylinder 211c, a blanking port is formed between every two adjacent connecting arms 214, and the top end of the rotating shaft 215 is rotatably connected and matched with the lower end face of the fixing block 213 through a bearing.
More specifically, the bottom cylinder 211a is located above the fixed cylinder 201 and an air inlet is formed between the bottom cylinder 211a and the fixed cylinder 201, a Z-shaped supporting leg 217 fixedly connected with the bottom cylinder 211a is arranged at an opening at the lower end of the bottom cylinder 211a and an opening at the upper end of the fixed cylinder 201, one end of the supporting leg 217 is fixedly connected with an opening at the lower end of the bottom cylinder 211a through a bolt, the other end of the supporting leg is fixedly connected with an opening at the upper end of the fixed cylinder 201 through a bolt, the supporting leg 217 comprises two ninety-degree bending positions, a first reinforcing rib 217a is arranged at one of the bending positions, a second reinforcing rib 217b is arranged at the other bending position, and the supporting leg 217 is provided with a plurality of supporting legs and is arranged in an array along the circumferential direction where the bottom cylinder 211a is located.
Air-dry mechanism 210 is in the course of the work, conveyor 300 is inputed the gravel and sand mixture to in the funnel 212, the gravel and sand mixture gets into through the blanking mouth and air-dries in the section of thick bamboo 211 and fall along air-drying a section of thick bamboo 211 is vertical downwards, in this process, drive rotation axis 215 rotates, rotation axis 215 will drive three fan unit 216 and rotate, blade 216b will rotate along round rotation axis 215, on the one hand blade 216b breaks up the gravel and sand mixture of caking, on the other hand blade 216b will make and air-dry and form the air current from lower to upper in the section of thick bamboo 211, this air current will air-dry the processing to the gravel and sand mixture of breaing up, the gravel and sand mixture after air-drying will be by end section of thick bamboo 211a internal diameter directly falling to the screen tray 203 in.
Referring to fig. 22 to 26, the driving mechanism 220 includes a sealing cylinder 221 with both closed upper and lower ends, a main motor 222, and a cylinder 223, the sealing cylinder 211 is coaxially and fixedly connected with the bottom of the fixed cylinder 201, one end of the sealing cylinder 211 is located below the inclined plate 206, the other end of the sealing cylinder 211 is located above the inclined plate 206, the main motor 222 is fixedly arranged in the sealing cylinder 211, the output shaft of the main motor 222 is vertically and upwardly arranged coaxially with the sieve tray 203, the cylinder 223 is arranged between the output shaft of the main motor 222 and the tray bottom 204, one end of the cylinder 223 is coaxially and fixedly connected with the output shaft of the main motor 222, the other end of the cylinder 223 is coaxially and fixedly connected with the tray bottom 204, the tray bottom 204 can be driven to rotate by the rotation of the main motor 222, and the tray bottom 204 can be driven to float upwards by the supply of air through the cylinder 223.
Specifically, the cylinder 223 includes a cylindrical cylinder 223a and a piston rod 224, a circular bottom plate 223b which is in sealing connection and matching with the cylinder 223a is coaxially and fixedly arranged at a lower end opening of the cylinder 223a, a circular air-permeable top plate 223c is coaxially and fixedly arranged at an upper end opening of the cylinder 223a, the piston rod 224 includes a piston 224a and an expansion rod 224b which are coaxially and fixedly connected, the piston 224a is matched with the cylinder 223a and forms sealing sliding guide matching along the vertical direction, relative rotation between the piston 224a and the cylinder 223a is restrained, that is, the piston 224a and the cylinder 223a do not rotate relatively, the piston 224a, the cylinder 223a and the bottom plate 223b form a variable-volume air chamber, the lower end of the expansion rod 224 is fixedly connected with the piston 224a, the upper end of the expansion rod 224 is fixedly connected with the lower end face of the disc bottom 204 by penetrating through the top plate 223c and the top end of the sealing cylinder 221 in a sliding manner, the expansion rod 224b slides upwards by supplying air to drive the air chamber, and the disc bottom 204 floats upwards.
More specifically, in order to supply air to the air chamber, an annular butt joint groove 225 is coaxially formed in the outer circular surface of the cylinder body 223a close to the lower end of the cylinder body 223a, an air supply hole 226 communicated with the air chamber is formed in the groove bottom of the butt joint groove 225, the air supply hole 226 is provided with a plurality of air supply holes and is arranged in an array mode along the circumferential direction where the cylinder body 223a is located, an annular butt joint pipe 227 communicated with the butt joint groove 225 is sleeved at the position of the annular groove of the butt joint groove 225, the butt joint pipe 227 and the butt joint groove 225 form sealed rotating connection matching, the butt joint pipe 227 is fixed in the sealing cylinder 221 and is communicated with the air pump through the air supply pipe 228.
More specifically, in order to transmit power to the airing mechanism 210 and drive the rotating shaft 215 to rotate, a transmission shaft 229 connecting the disk bottom 204 and the lower end of the rotating shaft 215 is disposed between the disk bottom 204 and the lower end of the rotating shaft 215, the transmission shaft 229 is a hollow shaft and is internally provided with an internal spline, the lower end of the transmission shaft 229 is an input end and is coaxially and fixedly connected with the upper end surface of the disk bottom 204, the upper end of the transmission shaft 229 is an output end and is coaxially sleeved on the lower end of the rotating shaft 215, and the outer circumferential surface of the lower end of the rotating shaft 215 is provided with an external spline which is combined with the internal spline and can slide up and down along the vertical direction.
In the working process of the driving mechanism 220, the main motor 222 is started, the main motor 222 drives the cylinder 223 to rotate around the axial direction of the main motor, the cylinder 223 transmits power to the tray bottom 204 and drives the tray bottom 204 to rotate, the transmission shaft 229 transmits the power on the tray bottom 204 to the rotating shaft 215 and drives the blades 216b to rotate around the rotating shaft 215, the drying mechanism 210 is driven, meanwhile, the sieve tray 203 synchronously rotates and centrifugally separates and screens sand and stones until the sand is completely screened out and discharged outside, the main motor 222 is turned off to stop the rotation of the tray bottom 204, at this time, the cylinder 223 is supplied with air, the piston 224a slides upwards, the telescopic rod 224b moves upwards and drives the tray bottom 204 to float upwards, and the tray bottom 204 releases the sealing of an opening formed at the inner circular surface of the built-in boss.
Referring to fig. 28 to 30, the conveying device 300 includes a mounting frame 301 fixedly disposed on an upper end surface of the frame 100, a first extension frame 301a horizontally extending along a front end of a traveling direction of the frame 100 is fixedly disposed on a top portion of the mounting frame 301, a second extension frame 301b horizontally extending along a rear end of the traveling direction of the frame 100 is fixedly disposed on a bottom portion of the mounting frame 301, the first extension frame 301a has a same height as the hopper 212 and is inserted into the hopper 212 through a rectangular opening formed on an outer circumferential surface of the hopper 202, a driving roller 302 is rotatably disposed at a joint of the second extension frame 301b and the mounting frame 301, a first driven roller 303 is rotatably disposed at an end portion of the extension end of the second extension frame 301b, a first driven roller 303 is rotatably disposed at the joint of the first extension frame 301a, a third driven roller is rotatably disposed at an end portion of the extension end of the first extension frame 301a, axial directions of the driving roller 302, the first driven roller 303, the second driven roller 304 and the third driven roller 305 are parallel to a width direction of the frame 100, the driving roller 302, the first driven roller 303, the second roller 304 and the third roller 305 are rotatably disposed around a conveying belt 306 forming a closed circulation loop of the conveying belt 306, and a plurality of hoppers 306 arranged along a plurality of hopper array of the hopper 306, and a plurality of hoppers 306, which are obliquely arranged along a plurality of the hopper 306, and are disposed on the hopper 306, and are disposed along a plurality of the hopper array of the hopper 306, and are disposed along a plurality of the hopper.
Specifically, the conveying device 300 further includes a conveying motor 308 fixedly disposed on the rack 100, an axial direction of an output shaft of the conveying motor 308 is parallel to an axial direction of the driving roller 302, a belt transmission assembly 309 for connecting the output shaft of the conveying motor 308 and a driving end of the driving roller 302 is disposed between the output shaft of the conveying motor 308 and the driving end of the driving roller 302, the belt transmission assembly includes a driving pulley coaxially and fixedly sleeved on the output shaft of the conveying motor 308, a driven pulley coaxially and fixedly sleeved on the driving end of the driving roller 302, and a belt wound between the driving pulley and the driven pulley, the conveying motor 308 drives the conveying belt 306 to operate, the hopper 307 moves upward and pours a sand-stone mixture inside the hopper 307 into the hopper 212, and the operation is repeated.
More specifically, the bottom of the hopper 307 is fixedly provided with a connecting belt 307a, the connecting belt 307a is arranged along the width direction of the conveying belt 306, the connecting belts 307a are arranged in parallel and are away from each other, the connecting belt 307a is fixedly connected with the conveying belt 306, the bottom of the hopper 307 is fixedly connected with the connecting belt 307 into a whole and is made of a high-elasticity rubber material, and the method is used for flexibly connecting the hopper 307 with the conveying belt 306 through micro-deformation.
In the working process of the conveying device 300, the sand-stone mixture is scooped up and dumped into the hopper 307 by the dumper, the conveying motor 308 drives the driving roller 302 to rotate, the conveying belt 306 continuously runs upwards, when the hopper 307 passes over the driving roller III 305 at the hopper 212, the opening of the hopper 307 turns downwards and dumps the sand-stone mixture into the hopper 212, the sand-stone mixture is supplied to the separating device 200, the conveying belt 306 continuously and slowly runs, the hopper 307 intermittently adds the sand-stone mixture into the hopper 212, and the mixture finishes the separation treatment on the sand-stone added last time in the intermittent time of feeding.
Referring to fig. 2 and 5, a front wheel 101 is arranged on the lower end surface of the frame 100 close to the front end thereof, a rear wheel 102 is arranged on the lower end surface of the frame 100 close to the rear end thereof, a traction handle 103 is fixedly arranged on the side surface close to the front end thereof, the rear wheels 102 are symmetrically arranged in the left-right direction along the length direction parallel to the frame 100, two rear wheels 102 and one front wheel 101 form a three-point structure, the front wheel 101 comprises a first retainer 101a rotationally connected and matched with the frame 100 and a driving roller 101b rotationally arranged on the first retainer 101a, a hinge shaft formed at the rotational connection between the first retainer 101a and the frame 100 is axially and vertically arranged, a hub motor capable of driving the driving roller 101b is arranged inside the driving roller, the hub motor is powered and driven by a storage battery, the rear wheel 102 comprises a second retainer 102a rotationally connected and matched with the frame 100 and a driven roller 102b rotationally arranged on the second retainer 102a, a hinge shaft formed at the rotational connection between the second retainer 102a and the frame 100 is axially and vertically arranged, the driving roller 101b is driven by the hub motor to drive the roller to rotate, so as to drive the roller 102b to realize the forward and backward movement of the frame 100, and to control the forward movement of the traction handle 103.
Referring to fig. 6, as a more optimized scheme of the present invention, in order to collect stones discharged from the separation device 200, a guide plate 104 arranged to be inclined downward is fixed at the front end of the rack 100, rectangular plate-shaped guard rails 105 arranged to be vertical are fixed at both sides of the guide plate 104, a clamping groove 106 is formed near one side surface of each guard rail 105, the lower end of the clamping groove 106 extends to the guide plate 104, and the upper end of the clamping groove 106 penetrates through the guard plate 105, a rectangular basket 107 with one open end is arranged between the two guard rails 105, and is in clamping fit with the clamping groove 106, the end of the basket 107 is inserted into the clamping groove 106, the opening of the basket 107 is arranged upward along the inclined direction of the guide plate 104, the lower end of the discharge hopper 207 is aligned with the inclined upper end of the guide plate 104, and through the arrangement of the basket 107, discharged sand can freely pass through the basket 107 and fall down, the discharged stones will enter the basket 107, so as to collect stones, and prevent the discharged sand from being mixed with the stones again.
Referring to fig. 2, as a more complete solution of the present invention, in order to facilitate integrated control of the whole machine, a control panel 110 is fixedly installed on a side surface of the rack 100, the control panel 110 is located at a middle position of the rack 100 along a length direction thereof, the control panel 110 establishes signal connection with the main motor 222, the conveying motor 308 and the hub motor through a controller, and can control start, stop and rotation speed of the main motor 222, the conveying motor 308 or the hub motor on the control panel 110.
Referring to fig. 2, as a more optimized scheme of the present invention, a push-pull type drawer 120 is disposed between an upper end surface and a lower end surface of the rack 100, a reasoning direction of the drawer 120 is a width direction of the rack 100 and can be pulled out and opened at one side of the rack 100, the drawer 120 is used for storing personal articles of an operator, and the drawer 120 is located between the control panel 110 and the traction handles 103.

Claims (3)

1. The utility model provides a gravel and sand centrifugation screening equipment for building engineering which characterized in that: the sand and stone separation device comprises a rectangular hollowed-out rack capable of traveling, a separation device and a conveying device, wherein one end of the rack in the length direction is the front end of the traveling direction, the other end of the rack in the length direction is the rear end of the traveling direction, the separation device is fixedly arranged on the upper end surface of the rack and is close to the front end of the rack, the conveying device is fixedly arranged on the upper end surface of the rack and is close to the rear end of the rack, the conveying device is used for supplying sand and stone to the separation device, the separation device is used for drying and centrifugally separating the sand and stone, and firstly, the sand is discharged outwards, and then, the stone is discharged outwards; the separating device comprises a cylindrical fixed cylinder which is fixedly arranged on the upper end surface of the frame and is provided with an opening vertically and upwards, a fixed ring is coaxially and fixedly arranged on the inner circular surface of the fixed cylinder and is fixedly connected with the inner circular surface of the fixed cylinder into a whole, the fixed ring is positioned in the middle of the fixed cylinder along the height direction of the fixed cylinder, a truncated cone-shaped sieve tray with an opening vertically and upwards arranged is coaxially and rotatably arranged in the fixed cylinder and can be heated, the sieve tray is sleeved in the fixed ring and is in rotating connection and matching with the fixed ring, the opening of the sieve tray is gradually increased along the vertical direction from bottom to top, the sieve tray is composed of a truncated cone-shaped steel sieve screen, an external boss, an internal boss and a tray bottom capable of floating up and down, the sieve screen is of a truncated cone-shaped steel wire mesh structure with openings arranged at the upper end and the lower end, the acute angle included angle formed by a generatrix of a cone where the screen mesh is located and an axis is 65-75 degrees, the external boss is an annular body and is coaxially and fixedly connected with an outer circular surface of an opening at the upper end of the screen mesh, the internal boss is an annular body and is coaxially and fixedly connected with an inner circular surface of an opening at the lower end of the screen mesh, the tray bottom and the internal boss are combined in an initial state and seal and block an opening formed at the inner circular surface of the internal boss, the tray bottom can float upwards and relieve the seal and block of the opening formed at the inner circular surface of the internal boss, the upper end surface of the tray bottom is arranged into a conical structure, a sharp end formed by the conical structure is vertically and upwards arranged, and the acute angle included angle formed by the generatrix of the cone where the upper end surface of the tray bottom is located and the axis is 75-80 degrees;
the upper end face of the fixing ring is embedded with a plurality of rollable balls which are arranged in an array manner along the circumferential direction where the fixing ring is located, the external boss is located above the fixing ring and enables the lower end face of the external boss to be in rolling connection and match with the upper end face of the fixing ring, the external boss is attached to the inner circular face of the fixing cylinder, the inner circular face of the fixing ring is coaxially and fixedly provided with an annular electric heating heater, the heater is in contact with the screen and can quickly conduct heat to the screen, the internal boss and the tray bottom, and the screen, the internal boss and the tray bottom are made of materials with good heat conduction performance;
the upper end face of the built-in boss is provided with a plurality of meshing grooves of a triangular structure, the meshing grooves penetrate through the inner circular face of the built-in boss, the meshing grooves are arranged in an array mode along the circumferential direction where the built-in boss is located, the diameter of the disc bottom is equal to the diameter of the inner circular face of the built-in boss, the outer circular face of the disc bottom is fixedly provided with a plurality of meshing blocks of the triangular structure, the meshing blocks protrude outwards in the radial direction, the meshing blocks are matched with the meshing grooves, the meshing blocks are arranged in an array mode along the circumferential direction where the disc bottom is located and correspond to the meshing grooves in a one-to-one mode, the meshing blocks are combined with the meshing grooves in the initial state, the disc bottom and the screen can rotate synchronously, and the bottom of each meshing groove is provided with a through hole which penetrates through the built-in boss vertically;
an inclined plate which is obliquely arranged is fixedly arranged in the fixed cylinder, an included angle formed between the inclined plate and the horizontal plane is 45-60 degrees, the inclined plate divides the fixed cylinder into an upper independent chamber and a lower independent chamber, the inclined plate is positioned below the screen disc, a discharge hopper which is obliquely and downwardly arranged is fixedly arranged on the outer circular surface of the fixed cylinder, the inclined lower ends of the discharge hopper and the inclined plate are aligned in the vertical direction, the inclined directions and the angles of the discharge hopper and the inclined plate are consistent, the inclined lower ends of the discharge hopper and the inclined plate point to the front end of the frame, a rectangular discharge port which penetrates through the inside and the outside is formed in the outer circular surface of the fixed cylinder, the discharge port is positioned between the inclined plate and the discharge hopper and connects and the inclined lower ends of the inclined plate and the inclined upper end of the discharge hopper, and vibrators are fixedly arranged on two sides of the discharge hopper;
the separation device also comprises an air drying mechanism coaxially arranged above the fixed cylinder and a driving mechanism coaxially arranged in the fixed cylinder and positioned below the screen disc, wherein the upper end of the air drying mechanism is an input end, the input end of the air drying mechanism is connected and communicated with the output end of the conveying device, the lower end of the air drying mechanism is an output end, the output end of the air drying mechanism is positioned right above the opening of the screen disc, the air drying mechanism is used for carrying out air drying treatment on a sand-stone mixture falling from the input end to the output end of the air drying mechanism and uniformly discharging the dried sand-stone mixture into the screen disc, and the driving mechanism is used for driving the disc bottom to rotate around the axis direction of the driving mechanism or driving the disc bottom to float upwards along the axis direction of the driving mechanism;
the air drying mechanism comprises a cylindrical step-shaped thin-wall air drying cylinder which is coaxial with the fixed cylinder and fixedly connected with an opening of the fixed cylinder, openings of the upper end and the lower end of the air drying cylinder are arranged, a cylindrical funnel is coaxially and fixedly arranged at the opening of the upper end of the air drying cylinder, the opening of the funnel is gradually reduced from top to bottom along the vertical direction, a rotating shaft is coaxially and rotatably arranged in the air drying cylinder, three groups of fan assemblies are coaxially and fixedly sleeved on the rotating shaft, the fan assemblies are arranged in an array mode at equal intervals along the axial direction of the rotating shaft, each fan assembly comprises a sleeve coaxially and fixedly sleeved on the rotating shaft and blades fixedly connected with the outer circular surface of the sleeve, the blades are arranged into a rectangular thin-wall plate body structure, one ends of the blades are fixedly connected with the outer circular surface of the sleeve, the other ends of the blades extend to the inner circular surface of the air drying cylinder, the length direction of the blades is arranged along the radial direction of the sleeve, the included angle formed between the width of the blades and the horizontal plane is 45 degrees, and the six blades are arranged in an array mode along the circumferential direction of the sleeve;
the air drying cylinder comprises a bottom cylinder, a middle cylinder and a top cylinder which are sequentially connected and communicated from bottom to top, the diameters of the bottom cylinder, the middle cylinder and the top cylinder are sequentially reduced, the inner diameter of the bottom cylinder is equal to that of an opening of the screen disc and the bottom cylinder and the top cylinder are coaxially arranged, an opening at the lower end of the bottom cylinder is an output end of the air drying mechanism, a funnel is connected and communicated with an opening at the upper end of the top cylinder and is positioned at an input end of the air drying mechanism, the fan assemblies are respectively positioned at the middle position of the bottom cylinder along the height direction of the bottom cylinder, the middle position of the middle cylinder along the height direction of the middle cylinder and the middle position of the top cylinder along the height direction, blades positioned in the bottom cylinder extend to the inner circular surface of the bottom cylinder, blades positioned in the middle cylinder extend to the inner circular surface of the middle cylinder, and blades positioned in the top cylinder extend to the inner circular surface of the top cylinder;
the center of the upper opening of the top cylinder is provided with a conical fixed block, the upper end face of the fixed block is arranged in a sharp shape, the lower end face of the fixed block is arranged in a horizontal shape, connecting arms for fixedly connecting the outer circular face of the fixed block and the inner circular face of the upper opening of the top cylinder are arranged between the outer circular face of the fixed block and the inner circular face of the upper opening of the top cylinder, four connecting arms are arranged and arranged in an array manner along the circumferential direction of the top cylinder, a blanking port is formed between every two adjacent connecting arms, and the top end of the rotating shaft is in rotating connection and matching with the lower end face of the fixed block through a bearing;
the bottom cylinder is positioned above the fixed cylinder, an air inlet is formed between the bottom cylinder and the fixed cylinder, a Z-shaped supporting leg for fixedly connecting the bottom cylinder and the fixed cylinder is arranged at an opening at the lower end of the bottom cylinder and an opening at the upper end of the fixed cylinder, one end of the supporting leg is fixedly connected with the opening at the lower end of the bottom cylinder through a bolt, the other end of the supporting leg is fixedly connected with the opening at the upper end of the fixed cylinder through a bolt, the supporting leg comprises two ninety-degree bending parts, one bending part is provided with a reinforcing rib I, the other bending part is provided with a reinforcing rib II, and the supporting legs are provided with a plurality of supporting legs and are arranged in an array manner along the circumferential direction of the bottom cylinder;
the driving mechanism comprises a sealing cylinder, a main motor and an air cylinder, wherein the upper end and the lower end of the sealing cylinder are sealed, the sealing cylinder is coaxially and fixedly connected with the bottom of the fixing cylinder, one end of the sealing cylinder is positioned below the inclined plate, the other end of the sealing cylinder is positioned above the inclined plate, the main motor is fixedly arranged in the sealing cylinder, an output shaft of the main motor is vertically and upwards coaxially arranged with the sieve tray, the air cylinder is arranged between an output shaft of the main motor and the tray bottom, one end of the air cylinder is coaxially and fixedly connected with the output shaft of the main motor, and the other end of the air cylinder is coaxially and fixedly connected with the tray bottom;
the air cylinder comprises a cylindrical cylinder body and a piston rod, a circular bottom plate which is in sealing connection and matching with the opening at the lower end of the cylinder body is coaxially and fixedly arranged at the opening at the upper end of the cylinder body, and a circular ventilating top plate is coaxially and fixedly arranged at the opening at the upper end of the cylinder body;
the cylinder body is coaxially provided with an annular butt joint groove on the outer circular surface close to the lower end of the cylinder body, the bottom of the butt joint groove is provided with a plurality of air supply holes communicated with the air chamber, the air supply holes are arranged in an array along the circumferential direction of the cylinder body, the annular groove opening of the butt joint groove is sleeved with an annular butt joint pipe communicated with the annular butt joint groove, the butt joint pipe and the butt joint groove form sealed rotary connection and matching, and the butt joint pipe is fixed in the sealing cylinder and is communicated with the air pump through an air supply pipe;
the actuating mechanism still including setting up the transmission shaft between the lower extreme of the end of a plate and rotation axis, the transmission shaft is quill shaft and its inside internal splines that is provided with, the lower extreme of transmission shaft is the input and this end and the coaxial fixed connection of up end of the end of a plate, the upper end of transmission shaft is the output and this end is coaxial cup joints on the lower extreme of rotation axis, be provided with the external splines on the outer disc of lower extreme of rotation axis, the external splines combines together with the internal splines and both can slide from top to bottom along vertical direction.
2. The sand centrifugal screening equipment for constructional engineering as claimed in claim 1, wherein: the conveying device comprises a mounting frame fixedly arranged on the upper end face of a rack, a first extending frame horizontally extending along the front end of the traveling direction of the rack is fixedly arranged at the top of the mounting frame, a second extending frame horizontally extending along the rear end of the traveling direction of the rack is fixedly arranged at the bottom of the mounting frame, the first extending frame is equal in height to the funnel and is inserted into the funnel through a rectangular opening formed in the outer circular surface of the funnel, a driving roller is rotatably arranged at the joint of the second extending frame and the mounting frame, a driven roller is rotatably arranged at the end part of the extending end of the second extending frame, a driven roller is rotatably arranged at the joint of the first extending frame and the mounting frame, a driven roller is rotatably arranged at the end part of the extending end of the first extending frame, a driving roller, a driven roller I, a driven roller II and a driven roller III are axially parallel to the width direction of the rack, the driving roller, the driven roller I, the driven roller II and the driven roller III are rotatably arranged on a conveying belt forming a closed circulation loop in a winding manner, the conveying belt forms a parallelogram inclining towards the funnel, a rectangular opening arranged on the conveying fixing belt, a plurality of hoppers are arranged in an equidistant array along the running direction of the conveying belt;
the conveying device also comprises a conveying motor fixedly arranged on the rack, the axial direction of an output shaft of the conveying motor is parallel to the axial direction of the driving roller, a belt transmission assembly for connecting the output shaft of the conveying motor and the driving roller is arranged between the output shaft of the conveying motor and the driving end of the driving roller, the belt transmission assembly comprises a driving belt wheel coaxially and fixedly sleeved on the output shaft of the conveying motor, a driven belt wheel coaxially and fixedly sleeved on the driving end of the driving roller and a belt wound between the driving belt wheel and the driven belt wheel;
the fixed connecting band that is provided with in bottom of loading hopper and connecting band arrange along the width direction of conveyer belt, and the connecting band is provided with two side by side and keeps away from the setting each other, connecting band and conveyer belt fixed connection, the bottom of loading hopper and connecting band rigid coupling are as an organic whole and make by the rubber materials of high elasticity.
3. The sand and stone centrifugal screening device for construction engineering according to claim 1 or 2, characterized in that: the front wheel comprises a first retainer rotationally connected and matched with the rack and a driving roller rotationally arranged on the first retainer, a hinged shaft formed at the rotational joint of the first retainer and the rack is axially and vertically arranged, a hub motor capable of driving the first retainer is arranged in the driving roller and is powered and driven by a storage battery, the rear wheel comprises a second retainer rotationally connected and matched with the rack and a driven roller rotationally arranged on the second retainer, and the hinged shaft formed at the rotational joint of the second retainer and the rack is axially and vertically arranged;
the fixed baffle that is provided with the downward sloping and arranges of front end of frame, the fixed rectangular plate guardrail that is provided with vertical arrangement in both sides of baffle, the guardrail is relevant to be close to a side and has seted up the draw-in groove, the lower extreme of draw-in groove extends to baffle department, the upper end runs through the backplate, be provided with between two guardrails with draw-in groove joint complex and one end open-ended rectangle pannier, the tip of pannier is pegged graft in the draw-in groove, the opening of pannier upwards arranges along the incline direction of baffle, arrange the lower extreme of fighting and align with the slope upper end of baffle.
CN202010568749.1A 2020-06-20 2020-06-20 Gravel and sand centrifugation screening equipment for building engineering Active CN111687044B (en)

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