CN107694914B - Multistage sieving mechanism of intermittent type unloading formula for building - Google Patents
Multistage sieving mechanism of intermittent type unloading formula for building Download PDFInfo
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- CN107694914B CN107694914B CN201711133894.1A CN201711133894A CN107694914B CN 107694914 B CN107694914 B CN 107694914B CN 201711133894 A CN201711133894 A CN 201711133894A CN 107694914 B CN107694914 B CN 107694914B
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- sand
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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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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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
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses an intermittent blanking type multistage screening device for buildings, which comprises a first screening box, a second screening box, a first sand screening device, a second motor, an incomplete gear, a first gear, a second gear, a third gear, a first rack, a first striker plate and a second striker plate, wherein the first sand screening device comprises a square frame, a screen, a first spring, a first motor, a cam and a second spring. And meanwhile, sand on the screen can be discharged immediately after each screening, so that the screening efficiency is prevented from being influenced.
Description
Technical Field
The invention relates to the technical field of building equipment, in particular to an intermittent blanking type multistage screening device for buildings.
Background
The building is a general term of buildings and structures, and is an artificial environment created by people by using the grasped material technical means and applying certain scientific laws, geomantic omen concepts and aesthetic rules to meet the needs of social life. The building is made of clay, bricks, tiles, stones and wood for people; (reinforced concrete and section bars are used recently) and other building materials, such as houses, bridges, plants, gymnasiums, cave dwellings, water towers, temples and the like. In a broad sense, landscapes and gardens are also part of buildings. More broadly, nests that are intentionally created by animals may also be counted as buildings.
The sand is an essential basic raw material in the field of construction, various impurities such as broken stones, garbage and the like exist in the sand, sand grains in the sand are also classified into different grades, the purposes are different, and the required sand is different in grain size grade. Therefore, the sand needs to be screened before it can be used.
The sand screening equipment at present is generally only provided with one-level sand screening device, can not satisfy different work needs to in the course of the work, if once add husky too much, can lead to the sieve mesh of screen cloth to block up, and the sand that is greater than the sieve mesh diameter on the screen cloth is laid on the screen cloth always, has reduced screening efficiency.
Disclosure of Invention
The invention aims to provide an intermittent blanking type multistage screening device for buildings, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an intermittent blanking type multistage screening device for buildings comprises a first screening box and a second screening box, wherein the first screening box and the second screening box are identical in structure and are circular, a sand hopper is arranged above the first screening box, a first feeding channel is connected between the sand hopper and the top of the first screening box, the second screening box is arranged under the first screening box, a second feeding channel is connected between the bottom of the first screening box and the top of the second screening box, a first discharging pipe is arranged at the right lower part of the first screening box, a second discharging pipe is arranged at the left lower part of the second screening box, a third discharging pipe is arranged in the middle of the bottom of the second screening box, a first sand screening device is horizontally arranged in the middle of an inner cavity of the first screening box and comprises a square frame, a screen mesh, a first spring, a first motor, a cam and a second spring, two ends of the square frame are slidably connected with the side wall of the first sand screening box, and the bottom of one end, far away from the first discharging pipe, of the square frame is fixedly provided with the second, the other end of the second spring is fixedly connected with the fixed block, the inner wall of the periphery of the square frame is provided with a mounting groove, the side wall of the periphery of the screen is embedded in the mounting groove, one side of the screen close to the first discharging pipe is fixedly provided with the first spring, the other end of the first spring is fixedly connected with the inner wall of the mounting groove, the other side of the screen is provided with a cam, the cam is arranged at the end part of an output shaft of the first motor, the first motor is arranged on the upper surface of the square frame, the middle part of an inner cavity of the second sand screening box is provided with a second sand screening device, the second sand screening device has the same structure with the first sand screening device, the meshes of the screen of the second sand screening device are smaller than the meshes of the screen of the first sand screening device, the lower part of the front end wall of the first sand screening box is provided with the second motor, the mounting shaft of the first gear penetrates through the center of the front end wall of the first sand screening box and is fixedly connected with the middle of the front side wall of the square frame of the first sand screening device, the second gear is arranged below the incomplete gear and is meshed with the incomplete gear, the second gear is arranged on the upper part of the front end wall of the second sand screening box through the mounting shaft, the third gear is arranged below the second gear and is meshed with the second gear, the mounting shaft of the third gear penetrates through the center of the front end wall of the second sand screening box and is fixedly connected with the middle of the front side wall of the square frame of the second sand screening device, the first rack is arranged above the incomplete gear on the left side, the second rack is arranged below the incomplete gear on the right side, the first rack and the second rack are connected with the guide rod in a sliding mode through the fixing blocks, the first traction rope is fixed at the upper end of the first rack, and the other end of the first traction rope penetrates, the first striker plate is arranged in the first feeding channel in a penetrating mode, a third spring is connected between the left end of the first striker plate and the left side wall of the first feeding channel, a second traction rope is fixed to the bottom end of the second rack, the other end of the second traction rope penetrates through the second fixed pulley and is fixedly connected with the right end of the second striker plate, the second striker plate is arranged in the second feeding channel in a penetrating mode, and a fourth spring is connected between the right end of the second striker plate and the right side wall of the second feeding channel.
As a further scheme of the invention: and supporting legs are fixed around the bottom of the second screening box.
As a further scheme of the invention: the fixed block is fixed on the inner wall of the first screening box.
As a further scheme of the invention: the guide rod is fixed on the front end wall of the first sand screening box.
As a further scheme of the invention: the first fixed pulley is fixed at the upper left part of the first sand screening box.
As a further scheme of the invention: and the second fixed pulley is fixed at the upper right part of the second sand screening box.
Compared with the prior art, the invention has the beneficial effects that: the sand screening device is provided with the first sand screening device and the second sand screening device, and can screen sand in multiple stages to meet different working requirements, the first sand screening device comprises a square frame, a screen, a first spring, a first motor, a cam and a second spring, the first motor drives the cam to rotate, the cam drives the screen to swing left and right through cooperation with the first spring, the sand screening efficiency is improved, the second motor, an incomplete gear, a first gear, a second gear, a third gear, a first rack, a second rack, a first traction rope, a second traction rope, a first material baffle and a second material baffle are arranged, intermittent blanking is achieved through cooperation of the components, the problem that screen meshes are blocked due to too much blanking is avoided, the screening efficiency is influenced, sand on the screen can be discharged immediately after each screening, and the screening efficiency is prevented from being influenced.
Drawings
Fig. 1 is a schematic structural diagram of an intermittent blanking type multistage screening device for buildings.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic structural diagram of a first sand screening device in an intermittent blanking type multistage screening device for buildings.
Fig. 4 is a top view of fig. 3.
In the figure: 1-a first sand screening box, 2-a first sand screening device, 3-a first striker plate, 4-a sand hopper, 5-a third spring, 6-a first fixed pulley, 7-a first traction rope, 8-a first gear, 9-a first rack, 10-a first discharge pipe, 11-a guide rod, 12-an incomplete gear, 13-a second motor, 14-a second feed channel, 15-a second striker plate, 16-a second gear, 17-a second discharge pipe, 18-a third gear, 19-a support leg, 20-a third discharge pipe, 21-a second sand screening device, 22-a second screening box, 23-a second fixed pulley, 24-a second traction rope, 25-a fourth spring, 26-a second rack, 27-a first spring, 28-screen, 29-square frame, 30-cam, 31-first motor, 32-second spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in the embodiment of the invention, an intermittent discharging type multistage screening device for buildings comprises a first screening box 1 and a second screening box 22, the first screening box 1 and the second screening box 22 are identical in structure and are circular, a sand hopper 4 is arranged above the first screening box 1, a first feeding channel is connected between the sand hopper 4 and the top of the first screening box 1, a second screening box 22 is arranged under the first screening box 1, a second feeding channel 14 is connected between the bottom of the first screening box 1 and the top of the second screening box 22, supporting legs 19 are fixed around the bottom of the second screening box 22, a first discharging pipe 10 is arranged at the right lower part of the first screening box 1, a second discharging pipe 17 is arranged at the left lower part of the second screening box 22, a third discharging pipe 20 is arranged in the middle of the bottom of the second screening box 22, a first sand screening device 2 is horizontally arranged in the middle of an inner cavity of the first screening box 1, and the first sand screening device 2 comprises a square frame 24 and a second sand screening box 22, The screening device comprises a screen 28, a first spring 27, a first motor 31, a cam 30 and a second spring 32, wherein two ends of a square frame 29 are slidably connected with the side wall of a first screening box 1, the bottom of one end, far away from a first discharge pipe 10, of the square frame 29 is fixedly provided with the second spring 32, the other end of the second spring 32 is fixedly connected with a fixed block, the fixed block is fixed on the inner wall of the first screening box 1, the peripheral inner wall of the square frame 29 is provided with a mounting groove, the peripheral side wall of the screen 28 is embedded in the mounting groove, one side, close to the first discharge pipe 10, of the screen 28 is fixedly provided with the first spring 27, the other end of the first spring 27 is fixedly connected with the inner side wall of the mounting groove, the other side of the screen 28 is provided with the cam 30, the cam 30 is arranged at the end part of an output shaft of the first motor 31, the first motor 31 is arranged on the upper surface of the square, the sand screening efficiency is improved, the middle part of the inner cavity of the second sand screening box 22 is provided with a second sand screening device 21, the structure of the second sand screening device 21 is the same as that of the first sand screening device 2, the meshes of the screen 28 of the second sand screening device 21 are smaller than those of the screen 28 of the first sand screening device 2, the lower part of the front end wall of the first sand screening box 1 is provided with a second motor 13, an incomplete gear 12 is arranged on an output shaft of the second motor 13, a first gear 8 is arranged above the incomplete gear 12, the first gear 8 is meshed with the incomplete gear 12, an installation shaft of the first gear 8 penetrates through the center of the front end wall of the first sand screening box 1 and is fixedly connected with the middle part of the front side wall of a square frame 29 of the first sand screening device 2, a second gear 16 is arranged below the incomplete gear 12, the second gear 16 is meshed with the incomplete gear 12, the second gear 16 is arranged on the upper part of the front end wall, a third gear 18 is arranged below the second gear 16, the third gear 18 is meshed with the second gear 16, an installation shaft of the third gear 18 penetrates through the center of the front end wall of a second sand sieving box 22 and is fixedly connected with the middle of the front side wall of a square frame 29 of a second sand sieving device 21, a first rack 9 is arranged above the left side of an incomplete gear 12, a second rack 26 is arranged below the right side of the incomplete gear 12, the first rack 9 and the second rack 26 are in sliding connection with a guide rod 11 through fixing blocks, the guide rod 11 is fixed on the front end wall of the first sand sieving box 1, a first traction rope 7 is fixed at the upper end of the first rack 9, the other end of the first traction rope 7 penetrates through a first fixed pulley 6 and is fixedly connected with the left end of a first material baffle 3, the first fixed pulley 6 is fixed at the upper left part of the first sand sieving box 1, the first material baffle 3 penetrates through a first material inlet channel, a third spring 5 is connected between the left end of the first material baffle 3 and the left, a second traction rope 24 is fixed at the bottom end of a second rack 26, the other end of the second traction rope 24 passes through a second fixed pulley 23 and is fixedly connected with the right end of a second material blocking plate 15, the second fixed pulley 23 is fixed at the upper right part of a second sand sieving box 22, the second material blocking plate 15 is arranged in a second feeding channel 14 in a penetrating manner, a fourth spring 25 is connected between the right end of the second material blocking plate 15 and the right side wall of the second feeding channel 14, a second motor 13 is started to rotate anticlockwise, the second motor 13 drives an incomplete gear 12 to rotate, the incomplete gear 12 is meshed with a first gear 8 so as to drive the first gear 8 to rotate clockwise, the first gear 8 drives a first sand sieving device 2 to rotate clockwise through a mounting shaft until the right end of the first sand sieving device 2 moves to a pipe orifice of a first discharging pipe 10, coarse-diameter sand on the first sand sieving device 2 slides to the right side ground through the first discharging pipe 10, and then the incomplete gear 12 is disengaged with the first gear 8, the first sand sieving device 2 returns to the horizontal position under the action of the pulling force of the second spring 32, meanwhile, the incomplete gear 12 is meshed with the first rack 9 and drives the first rack 9 to move downwards, the first rack 9 pulls the first striker plate 3 leftwards through the first traction rope 7, the first feeding channel is opened, the sand part in the sand hopper 4 falls onto the first sand sieving device 2, then the incomplete gear 12 is disengaged from the first rack 9, the first striker plate 3 moves rightwards under the action of the third spring 5 to close the first feeding channel and stop discharging the sand, then the incomplete gear 12 is meshed with the second gear 16, the second gear 16 drives the second sand sieving device 21 to rotate anticlockwise through the third gear 18 until the left end of the second sand sieving device 21 rotates to the pipe orifice of the second discharging pipe 17, the sand with the medium particle size on the second sand sieving device 21 falls onto the left side of the device through the second discharging pipe 17, then the incomplete gear 12 is disengaged from the second gear 16, under the action of a second spring 32 of the second sand sieving device 21, the second sand sieving device 21 returns to the horizontal position, meanwhile, the incomplete gear 12 is engaged with the second rack 26 to drive the second rack 26 to move upwards, the second rack 26 pulls the second baffle plate 15 to move rightwards through a second traction rope 24, the second feeding channel 14 is opened, sand screened by the screen 28 of the first sand sieving device 2 falls onto the second sand sieving device 21, then the incomplete gear 12 is disengaged from the second rack 26, the second baffle plate 15 moves leftwards under the action of a fourth spring 25 to close the second feeding channel 14, then the incomplete gear 12 is engaged with the first gear 8 again, and through the continuous circulation, the intermittent blanking is realized, the phenomenon that one-time excessive blanking causes mesh blockage of the screen 28 to influence the screening efficiency is avoided, the sand that can select three kinds of different particle diameters simultaneously and divide the heap to place, the ejection of compact is convenient quick, satisfies different building work demands, has reduced workman's intensity of labour, has improved work efficiency.
The working principle of the invention is as follows: when the sand screening device is used, sand is firstly added into a sand hopper 4, then a first motor 31 is started, the first motor 31 drives a cam 30 to rotate, the cam 30 drives a screen 28 to swing left and right through being matched with a first spring 27, the sand screening efficiency is improved, meanwhile, a second motor 13 is started to rotate anticlockwise, the second motor 13 drives an incomplete gear 12 to rotate, the incomplete gear 12 is meshed with a first gear 8 so as to drive the first gear 8 to rotate clockwise, the first gear 8 drives a first sand screening device 2 to rotate clockwise through a mounting shaft of the first gear until the right end of the first sand screening device 2 moves to a pipe orifice of a first discharging pipe 10, coarse-grain-diameter sand on the first sand screening device 2 slides to the right side ground of the device through the first discharging pipe 10, then the incomplete gear 12 is disengaged from the first gear 8, and the first sand screening device 2 returns to a horizontal position under the pulling force of the second spring 32, meanwhile, the incomplete gear 12 is meshed with the first rack 9 and drives the first rack 9 to move downwards, the first rack 9 pulls the first baffle plate 3 leftwards through the first traction rope 7, the first feeding channel is opened, the sand in the sand hopper 4 partially falls onto the first sand screening device 2, then the incomplete gear 12 is disengaged from the first rack 9, the first baffle plate 3 moves rightwards under the action of the third spring 5 to close the first feeding channel and stop discharging the sand, then the incomplete gear 12 is meshed with the second gear 16, the second gear 16 drives the second sand screening device 21 to rotate anticlockwise through the third gear 18 until the left end of the second sand screening device 21 rotates to the pipe orifice of the second discharging pipe 17, the sand with medium particle size on the second sand screening device 21 falls onto the left ground of the device through the second discharging pipe 17, then the incomplete gear 12 is disengaged from the second gear 16, and under the action of the second spring 32 of the second sand screening device 21, the second sand sieving device 21 returns to the horizontal position, meanwhile, the incomplete gear 12 is meshed with the second rack 26 to drive the second rack 26 to move upwards, the second rack 26 pulls the second baffle plate 15 to move rightwards through the second traction rope 24, the second feeding channel 14 is opened, sand screened by the screen 28 of the first sand sieving device 2 falls onto the second sand sieving device 21, then the incomplete gear 12 is disengaged from the second rack 26, the second baffle plate 15 moves leftwards under the action of the fourth spring 25 to seal the second feeding channel 14, then the incomplete gear 12 is meshed with the first gear 8 again, through continuous circulation, intermittent blanking is realized, mesh blockage of the screen 28 caused by one-time excessive blanking is avoided, screening efficiency is influenced, meanwhile, sands with three different particle sizes can be screened out and placed in a pile, discharging is convenient and rapid, and different building work requirements are met, the labor intensity of workers is reduced, and the working efficiency is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. An intermittent blanking type multistage screening device for buildings comprises a first screening box (1) and a second screening box (22), wherein the first screening box (1) and the second screening box (22) are identical in structure and circular, and is characterized in that a sand hopper (4) is arranged above the first screening box (1), a first feeding channel is connected between the sand hopper (4) and the top of the first screening box (1), a second screening box (22) is arranged under the first screening box (1), a second feeding channel (14) is connected between the bottom of the first screening box (1) and the top of the second screening box (22), a first discharging pipe (10) is arranged at the lower right part of the first screening box (1), a second discharging pipe (17) is arranged at the lower left part of the second screening box (22), a third discharging pipe (20) is arranged in the middle of the bottom of the second screening box (22), a first sand screening device (2) is horizontally arranged in the middle of an inner cavity of the first screening box (1), the first sand screening device (2) comprises a square frame (24), a screen (28), a first spring (27), a first motor (31), a cam (30) and a second spring (32), wherein the two ends of the square frame (29) are slidably connected with the side wall of the first sand screening box (1), the bottom of one end, away from the first discharging pipe (10), of the square frame (29) is fixedly provided with the second spring (32), the other end of the second spring (32) is fixedly connected with a fixed block, the inner wall of the periphery of the square frame (29) is provided with a mounting groove, the side wall of the periphery of the screen (28) is embedded in the mounting groove, one side, close to the first discharging pipe (10), of the screen (28) is fixedly provided with the first spring (27), the other end of the first spring (27) is fixedly connected with the mounting groove of the inner side wall, the other side of the screen (28) is provided with the cam (30), and the cam, the first motor (31) is installed on the upper surface of the square frame (29), the middle part of the inner cavity of the second sand screening box (22) is provided with a second sand screening device (21), the second sand screening device (21) has the same structure with the first sand screening device (2), the meshes of the screen (28) of the second sand screening device (21) are smaller than the meshes of the screen (28) of the first sand screening device (2), the lower part of the front end wall of the first sand screening box (1) is provided with a second motor (13), an output shaft of the second motor (13) is provided with an incomplete gear (12), a first gear (8) is arranged above the incomplete gear (12), the first gear (8) is meshed with the incomplete gear (12), an installation shaft of the first gear (8) penetrates through the center of the front end wall of the first sand screening box (1) and is fixedly connected with the middle of the front side wall of the square frame (29) of the first sand screening device (2), and a second gear (16) is arranged below the incomplete gear (12), the second gear (16) is meshed with the incomplete gear (12), the second gear (16) is installed on the upper portion of the front end wall of the second sand screening box (22) through an installation shaft, the third gear (18) is arranged below the second gear (16), the third gear (18) is meshed with the second gear (16), the installation shaft of the third gear (18) penetrates through the center of the front end wall of the second sand screening box (22) and is fixedly connected with the middle of the front side wall of the square frame (29) of the second sand screening device (21), a first rack (9) is arranged above the left side of the incomplete gear (12), a second rack (26) is arranged below the right side of the incomplete gear (12), the first rack (9) and the second rack (26) are in sliding connection with the guide rod (11) through fixing blocks, a first traction rope (7) is fixed at the upper end of the first rack (9), and the other end of the first traction rope (7) penetrates through the first fixing pulley (6) and is fixedly connected with the left end of the first material blocking plate (, in first striker plate (3) wore to locate first feedstock channel, be connected with third spring (5) between first striker plate (3) left end and the first feedstock channel left side wall, second rack (26) bottom mounting has second haulage rope (24), second haulage rope (24) other end pass second fixed pulley (23) and with second striker plate (15) right-hand member fixed connection, second striker plate (15) are worn to locate in second feedstock channel (14), be connected with fourth spring (25) between second striker plate (15) right-hand member and second feedstock channel (14) right side wall.
2. An intermittent blanking type multistage screening device for building according to claim 1, characterized in that the bottom of the second screening box (22) is fixed with supporting legs (19) all around.
3. An intermittent blanking type multistage screening device for building according to claim 1, characterized in that the fixed block is fixed on the inner wall of the first screening box (1).
4. An apparatus as claimed in claim 1, wherein the guide bar (11) is fixed to the front end wall of the first sand screening box (1).
5. An intermittent blanking type multistage screening device for building according to claim 1, characterized in that the first fixed pulley (6) is fixed at the upper left part of the first screening sand box (1).
6. An intermittent blanking type multistage screening device for building according to claim 1, characterized in that the second fixed pulley (23) is fixed at the upper right portion of the second sand screening box (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133894.1A CN107694914B (en) | 2017-11-16 | 2017-11-16 | Multistage sieving mechanism of intermittent type unloading formula for building |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133894.1A CN107694914B (en) | 2017-11-16 | 2017-11-16 | Multistage sieving mechanism of intermittent type unloading formula for building |
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| CN107694914A CN107694914A (en) | 2018-02-16 |
| CN107694914B true CN107694914B (en) | 2020-09-18 |
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| CN111672738A (en) * | 2020-08-02 | 2020-09-18 | 覃报 | Building engineering is with novel screening sand device |
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| CN205518521U (en) * | 2016-02-04 | 2016-08-31 | 任新年 | Screening system is rotated to high -efficient intermittent type formula |
| CN106964552B (en) * | 2017-04-26 | 2019-05-10 | 郑州三和水工机械有限公司 | Interval throwing type feed separation method and device |
| CN107096713A (en) * | 2017-06-23 | 2017-08-29 | 长沙无道工业设计有限公司 | The automatic separating screen device of the segmentation yellow sand such as one kind |
| CN107159563A (en) * | 2017-07-14 | 2017-09-15 | 丁文海 | A kind of high-efficiency sand sieve for building of uniform blanking |
| CN107262195A (en) * | 2017-07-17 | 2017-10-20 | 杜鑫 | A kind of discarded brick and tile efficiency crushing device for building |
| CN107309164A (en) * | 2017-08-30 | 2017-11-03 | 湖州中辰建设有限公司 | A kind of screen cloth for building |
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2017
- 2017-11-16 CN CN201711133894.1A patent/CN107694914B/en active Active
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