CN112439689A - Efficient bidirectional slope type environment-friendly screening machine - Google Patents

Efficient bidirectional slope type environment-friendly screening machine Download PDF

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Publication number
CN112439689A
CN112439689A CN202011245380.7A CN202011245380A CN112439689A CN 112439689 A CN112439689 A CN 112439689A CN 202011245380 A CN202011245380 A CN 202011245380A CN 112439689 A CN112439689 A CN 112439689A
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CN
China
Prior art keywords
sieve
bearing
screening
screen
flow guide
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011245380.7A
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Chinese (zh)
Inventor
卢克银
宋恒彬
杨永川
宋洋子
郭立方
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Jiaozuo Hengbo Technology Co ltd
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Jiaozuo Hengbo Technology Co ltd
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Application filed by Jiaozuo Hengbo Technology Co ltd filed Critical Jiaozuo Hengbo Technology Co ltd
Priority to CN202011245380.7A priority Critical patent/CN112439689A/en
Publication of CN112439689A publication Critical patent/CN112439689A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes

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  • Combined Means For Separation Of Solids (AREA)

Abstract

The invention discloses a high-efficiency bidirectional slope type environment-friendly screening machine, which comprises a bearing frame and a screening box, wherein the bearing frame is connected with the screening box through a damping mechanism, a driving motor is in transmission connection with a vibration exciter, a bidirectional slope type screening mechanism is arranged in the screening box and comprises a first screening group and a second screening group, the first screening group and the second screening group are identical in structure and symmetrically arranged by taking the central axis of the screening box as the center, the first screening group and the second screening group respectively comprise an upper screening part and a lower screening part, upper bearing strips of the first screening group and the second screening group are arranged in a shape of a Chinese character 'ba', and lower bearing strips of the first screening group and the second screening group are arranged in a shape of a Chinese character 'ba'; by using the sieving machine, the reversing of the feeding direction of the materials is realized between the splayed upper sieving part and the splayed lower sieving part, and due to the gravity action and the change of the feeding direction, the large-particle materials can be prevented from driving small-particle materials to directly flow out, and the sieving quality and efficiency can be obviously improved.

Description

Efficient bidirectional slope type environment-friendly screening machine
Technical Field
The invention relates to the technical field of screening machinery, in particular to a high-efficiency bidirectional slope type environment-friendly screening machine.
Background
The application of the vibrating screen is very wide, and the vibrating screen can not be separated from the vibrating screen in all aspects of life from mining, metallurgy, coal, petrochemical industry, water conservancy and electric power, light industry, construction, transportation, even flour processing and the like. As main raw materials of coal and ore in power plants, mine plants and steel plants, the coal and ore are required to be screened and classified before being used. At present, when solid materials such as ores and the like are classified according to the particle diameter, the classification operation is usually carried out by utilizing a screening system formed by a screening mechanism with a traditional structure, such as a probability screen, a bar screen and the like, and the currently used screening equipment can meet the requirement of screening the solid materials to a certain extent during operation, but the current traditional screening mechanism has a complex structure and relatively large equipment structure volume and dead weight, and one screening equipment usually only screens the materials with a specific particle structure, so that the screening operation efficiency is low, and the requirement of screening the materials with different types can be met by synchronous operation of a plurality of equipment, so that the operation energy consumption of the current traditional screening system during actual operation is relatively large, the difficulty of the equipment operation and maintenance operation is large, the cost is high, and the equipment installation and positioning need to occupy a large installation space, the screening device is easy to be limited by the environment of the use site, the construction cost of the use site is high, the space utilization rate is low, and the cost of the operation such as use and maintenance of the current screening device is increased. In summary, in the conventional process flow, the used equipment has the following disadvantages: the energy consumption is high, the noise is large, and the dust pollution is serious; the use cycle is short, and wearing and tearing are serious, and it is inconvenient to maintain, and the maintenance cycle is longer, and the screening effect is not very good, and work efficiency is low.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide an efficient bidirectional slope type environment-friendly screening machine.
In order to achieve the purpose, the invention is implemented according to the following technical scheme:
a high-efficiency bidirectional slope type environment-friendly screening machine comprises a bearing frame and a screen box, wherein the bearing frame is connected with the screen box through a damping mechanism, a driving motor is fixed on the bearing frame, a vibration exciter is arranged on the outer wall of the screen box, the driving motor is in transmission connection with the vibration exciter, the cross section of the screen box in the vertical direction is hexagonal, a feed inlet is formed in the top of the screen box, a coarse material outlet and a fine material outlet are formed in the bottom of the screen box, a bidirectional slope type screening mechanism is arranged in the screen box and comprises a first screen group and a second screen group, the first screen group and the second screen group are identical in structure and are symmetrically arranged by taking the central axis of the screen box as the center, the first screen group and the second screen group respectively comprise an upper screen part and a lower screen part, the upper screen part comprises a plurality of screen plates and upper bearing strips, the upper bearing strips are two and are both fixedly connected with the inner wall of the screen box, the sieve plates are fixed inside the sieve box through upper bearing strips, the upper bearing strips of the first sieve group and the second sieve group are arranged in a splayed mode, the lower sieve part comprises a plurality of sieve plates and lower bearing strips, the lower bearing strips are two and are fixedly connected with the inner side wall of the sieve box, the sieve plates are fixed inside the sieve box through the lower bearing strips, the lower bearing strips of the first sieve group and the second sieve group are arranged in an inverted splayed mode, the number of the fine material outlets is three, the number of the coarse material outlets is two, the channels formed between the upper parts of the first sieve group and the second sieve group and the inner wall of the sieve box are coarse material channels respectively, the coarse material channels are communicated with the coarse material outlets, flow guide grooves are arranged below the upper sieve parts of the first sieve group and the second sieve group, a first fine material channel is formed between the upper sieve part and the flow guide grooves, and the first fine material outlets are communicated with each other, a second fine material channel is formed between the lower part of the lower screen part and the inner wall of the screen box, and the second fine material channel is communicated with the fine material outlet;
furthermore, the two vibration exciters are symmetrically fixed on the outer wall of the screen box, the two driving motors are respectively in transmission connection with the vibration exciters;
furthermore, the damping mechanism comprises two bearing seats, a main bearing spring, an auxiliary bearing spring and two elastic cushion blocks, wherein the bearing seats are of a groove-shaped structure with a U-shaped shaft end, the two bearing seats are connected with each other through the main bearing spring and the auxiliary bearing spring and are coaxially distributed, the effective lengths of the main bearing spring and the auxiliary bearing spring are 1/4-1/2 respectively embedded in the two bearing seats, the outer diameter of the main bearing spring is the same as the inner diameter of the bearing seats, the outer surface of the main bearing spring is abutted against and slidably connected with the inner surface of the side wall of the bearing seats, the auxiliary bearing spring is embedded in the main bearing spring, the outer diameter of the auxiliary bearing spring is 1/3-2/3 of the inner diameter of the main bearing spring, the spiral directions of the main bearing spring and the auxiliary bearing spring are opposite, and the elastic cushion blocks are two, the elastic cushion blocks are respectively embedded in the two bearing seats and are coaxially distributed with the bearing seats, the elastic cushion blocks are additionally embedded in the auxiliary pressure-bearing springs and are mutually connected with the inner surfaces of the auxiliary pressure-bearing springs in a sliding manner, the elastic cushion blocks exceed the front end surfaces of the bearing seats by at least 5 mm, and the distance between the elastic cushion blocks in the two bearing seats is 1/5-3/4 of the distance between the two bearing seats;
furthermore, the sieve plates are mutually connected with the upper bearing strip or the lower bearing strip through a fixing mechanism, the fixing mechanism comprises a fixing snap ring, a pressing plate, a bolt cushion block and a bolt, the fixing snap ring and the pressing plate are welded and fixed together, the fixing snap ring penetrates through the sieve plates, and the bolt cushion block is arranged in the fixing snap ring and is fixed on the upper bearing strip or the lower bearing strip through the bolt; the upper ends of the upper screen part and the lower screen part are both provided with a guide plate, the guide plates are fixedly connected with the inner wall of the screen box, and the bottom ends of the guide plates are abutted against the pressing plate;
further, the flow guide groove comprises an upper flow guide part and a lower flow guide part, the upper flow guide part is arranged in a splayed shape, two ends of the upper flow guide part are fixed on the inner wall of the screen box, the lower flow guide part is arranged in a reverse splayed shape, two ends of the lower flow guide part are fixed on the inner wall of the screen box, the cross sectional area of the lower flow guide part is larger than that of the upper flow guide part, and the lower flow guide part is communicated with the fine discharge hole;
furthermore, at least two reinforcing ribs are arranged in the screen box, and the reinforcing ribs are fixed on the inner wall of the screen box; the reinforcing ribs are used for enhancing the strength of the screen box;
furthermore, an observation through hole is formed in the outer wall of the screen box, an observation cover is arranged outside the observation through hole, and the observation cover is fixedly connected with the outer wall of the screen box through a bolt; the observation through hole is used for observing the internal condition of the screen box, so that later maintenance is facilitated;
further, be provided with two at least dust exhaust holes on the lateral wall of sieve case, the dust exhaust hole on the sieve case can external equipment such as drainage fan, reaches the purpose of environmental protection dust fall.
Compared with the prior art, the efficient bidirectional slope type environment-friendly screening machine has the following beneficial effects:
the invention adopts the bidirectional screening mechanism, can realize rapid blanking screening, simultaneously, the upper bearing strips in the bidirectional screening mechanism are arranged in a splayed shape, the lower bearing strips are arranged in an inverted splayed shape, two ends of a plurality of screen plates are respectively fixed on the upper bearing strips or the lower bearing strips, so that the reversing of the blanking direction of materials is realized in the blanking process, the design can avoid the problems that the large-particle materials are mixed with small-particle materials to directly flow out from the feed opening in the feeding process and can not be screened completely because the inclined line of the existing sieving machine is downward all the time, by using the sieving machine of the invention, the material feeding direction is reversed between the splayed upper sieving part and the splayed lower sieving part, due to the change of the gravity action and the blanking direction, the large-particle materials can be prevented from driving the small-particle materials to directly flow out, and the screening quality and efficiency can be obviously improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a sieve box of the present invention;
FIG. 2 is a side view of the structure of the present invention;
FIG. 3 is a schematic view of the shock absorbing mechanism of the present invention;
fig. 4 is a schematic view of the structure of the lower screen part of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1-4, the efficient bidirectional slope type environment-friendly screening machine comprises a bearing frame 1 and a screen box 2, wherein the bearing frame 1 is connected with the screen box 2 through a damping mechanism 3, a driving motor 4 is fixed on the bearing frame 1, a vibration exciter 5 is arranged on the outer wall of the screen box 2, the driving motor 4 is in transmission connection with the vibration exciter 5, the vertical section of the screen box 2 is hexagonal, a feed inlet 7 is arranged at the top of the screen box 2, a coarse material outlet 8 and a fine material outlet 9 are arranged at the bottom of the screen box, a bidirectional slope type screening mechanism is arranged in the screen box 2, the bidirectional screening mechanism comprises a first screen set and a second screen set, the first screen set and the second screen set are identical in structure and symmetrically arranged by taking the central axis of the screen box 2 as the center, the first screen set and the second screen set both comprise an upper screen portion and a lower screen portion, the upper screen portion comprises a plurality of screen plates 10 and upper bearing strips 11, the upper bearing strips 11 are two and are fixedly connected with the inner wall of the screen box 2, the plurality of screen plates 10 are fixed in the screen box 2 through the upper bearing strips 11, the upper bearing strips 11 of the first screen group and the second screen group are arranged in a splayed shape, the lower screen part comprises a plurality of screen plates 10 and lower bearing strips 12, the lower bearing strips 12 are two and are fixedly connected with the inner side wall of the screen box 2, the plurality of screen plates 10 are fixed in the screen box 2 through the lower bearing strips 12, the lower bearing strips 12 of the first screen group and the second screen group are arranged in an inverted splayed shape, the number of fine material outlets 9 is three, the number of coarse material outlets 8 is two, the channels formed between the upper parts of the first screen group and the second screen group and the inner wall of the screen box 2 are coarse material channels 13, the coarse material channels 13 are communicated with the coarse material outlets 8, and the flow guide grooves 14 are arranged below the upper parts of the first screen group and the second screen group, a first fine material channel 15 is formed between the upper screen part and the diversion trench 14, the first fine material channel 15 is communicated with the fine material outlet 9, a second fine material channel 16 is formed between the lower part of the lower screen part and the inner wall of the screen box 2, and the second fine material channel 16 is communicated with the fine material outlet 9;
referring to fig. 2, in the present embodiment, two vibration exciters 5 are symmetrically fixed on the outer wall of the screen box 2, two driving motors 4 are provided, and the two driving motors 4 are in transmission connection with the vibration exciters 5 respectively;
referring to fig. 3, in the present embodiment, the damping mechanism 3 includes two bearing seats 31, two main bearing springs 32, two auxiliary bearing springs 33, and two elastic cushion blocks 34, where the two bearing seats 31 are all groove-shaped structures with a u-shaped axial end, the two bearing seats 31 are connected and coaxially distributed through the main bearing springs 32 and the auxiliary bearing springs 33, the effective lengths 1/4-1/2 of the main bearing springs 32 and the auxiliary bearing springs 33 are respectively embedded in the two bearing seats 31, the outer diameters of the main bearing springs 32 are the same as the inner diameters of the bearing seats 31, the outer surfaces of the main bearing springs 32 abut against and are slidably connected with the inner surfaces of the side walls of the bearing seats 31, the auxiliary bearing springs 33 are embedded in the main bearing springs 32, the outer diameters of the auxiliary bearing springs 33 are 1/3-2/3 of the inner diameters of the main bearing springs 32, and the main bearing springs 32 are in sliding connection with each other, The auxiliary pressure-bearing springs 33 have opposite spiral directions, two elastic cushion blocks 34 are respectively embedded in the two bearing seats 31 and are coaxially distributed with the bearing seats 31, the elastic cushion blocks 34 are additionally embedded in the auxiliary pressure-bearing springs 33 and are mutually connected with the inner surfaces of the auxiliary pressure-bearing springs 33 in a sliding manner, the elastic cushion blocks 34 exceed the front end surfaces of the bearing seats 31 by at least 5 mm, and the distance between the elastic cushion blocks 34 in the two bearing seats 31 is 1/5-3/4 of the distance between the two bearing seats 31.
Referring to fig. 4, in the present embodiment, the plurality of screen plates 10 are connected to the upper carrier bar 11 or the lower carrier bar 12 through a fixing mechanism, the fixing mechanism includes a fixing snap ring 17, a pressure plate 18, a bolt pad 19 and a bolt 20, the fixing snap ring 17 and the pressure plate 18 are welded and fixed together, the fixing snap ring 17 penetrates through the screen plates 10, the bolt pad 19 is installed in the fixing snap ring and fixed on the upper carrier bar 11 or the lower carrier bar 12 through the bolt 20; the upper end of going up sieve portion and sieve portion down all is provided with guide plate 25, guide plate 25 and sieve case 2 inner wall fixed connection, the bottom of guide plate 25 is inconsistent with clamp plate 18.
As shown in fig. 1, in this embodiment, the diversion trench 14 includes an upper diversion part 141 and a lower diversion part 142, the upper diversion part 141 is arranged in a shape of "eight", and two ends of the upper diversion part 141 are fixed on the inner wall of the screen box 2, the lower diversion part 142 is arranged in a shape of "eight", and two ends of the lower diversion part 142 are fixed on the inner wall of the screen box 2, the cross-sectional area of the lower diversion part 142 is larger than that of the upper diversion part 141, and the lower diversion part 142 is communicated with the fine discharge hole 9.
As shown in fig. 1, in the present embodiment, at least two reinforcing ribs 21 are disposed in the screen box 2, and the reinforcing ribs 21 are fixed on the inner wall of the screen box 2; the reinforcement bars 21 are used to reinforce the strength of the screen box 2.
As shown in fig. 1, in the present embodiment, the outer wall of the screen box 2 is further provided with an observation through hole 22, an observation cover 23 is provided outside the observation through hole 22, and the observation cover 23 is fixedly connected with the outer wall of the screen box 2 through a bolt; the observation through hole 22 is used for observing the internal condition of the screen box 2, and is convenient for later maintenance.
In the present embodiment, as shown in fig. 1, at least two dust discharge holes 24 are provided on the outer side wall of the screen box 2.
The invention adopts the bidirectional screening mechanism, can realize rapid blanking screening, and simultaneously, the upper bearing strips in the bidirectional screening mechanism are arranged in a splayed shape, the lower bearing strips are arranged in an inverted splayed shape, and two ends of a plurality of screen plates are respectively fixed on the upper bearing strips or the lower bearing strips, so that the reversing of the blanking direction of the materials is realized in the blanking process.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a high-efficient two-way slope formula environmental protection screening machine, is including bearing frame and sieve case, its characterized in that, it passes through damper and is connected with the sieve case to bear the frame, be fixed with driving motor in bearing the frame, be provided with the vibration exciter on the outer wall of sieve case, driving motor is connected with the vibration exciter transmission, the cross-section of sieve case in vertical is the hexagon, the top of sieve case is provided with the feed inlet, the bottom is provided with coarse fodder export and fine fodder export, be provided with two-way slope formula screening mechanism in the sieve case, two-way screening mechanism includes first sieve group and second sieve group, first sieve group is the same with second sieve group structure, and uses sieve case axis as central symmetry setting, first sieve group and second sieve group all include upper screen portion and lower screen portion, upper screen portion includes a plurality of sieve boards and upper bearing strip, upper bearing strip is two for two, The sieve plates are fixedly connected with the inner wall of the sieve box, the sieve plates are fixed in the sieve box through upper bearing strips, the upper bearing strips of the first sieve group and the second sieve group are arranged in a splayed shape, the lower sieve part comprises a plurality of sieve plates and lower bearing strips, the lower bearing strips are two and are fixedly connected with the inner side wall of the sieve box, the sieve plates are fixed in the sieve box through lower bearing strips, the lower bearing strips of the first sieve group and the second sieve group are arranged in an inverted splayed shape, the number of the fine material outlets is three, the number of the coarse material outlets is two, the channels formed between the upper parts of the first sieve group and the inner wall of the sieve box and the upper parts of the second sieve group are respectively a coarse material channel, the coarse material channels are mutually communicated with the coarse material outlets, the flow guide grooves are arranged below the upper sieve parts of the first sieve group and the flow guide grooves, and the first fine material channels are formed between the upper sieve parts and the flow guide grooves, the first fine material channel is communicated with the fine material outlet, a second fine material channel is formed between the lower portion of the lower screen portion and the inner wall of the screen box, and the second fine material channel is communicated with the fine material outlet.
2. The efficient bidirectional slope type environment-friendly screening machine according to claim 1, wherein the number of the vibration exciters is two, the two vibration exciters are symmetrically fixed on the outer wall of the screening box, the number of the driving motors is two, and the two driving motors are respectively in transmission connection with the vibration exciters.
3. The efficient two-way environmental-friendly slope screening machine according to claim 1, wherein the damping mechanism comprises two bearing seats, a main bearing spring, an auxiliary bearing spring and an elastic cushion block, the two bearing seats are all of a groove-shaped structure with a U-shaped shaft end, the two bearing seats are connected and coaxially distributed through the main bearing spring and the auxiliary bearing spring, the effective lengths 1/4-1/2 of the main bearing spring and the auxiliary bearing spring are respectively embedded in the two bearing seats, the outer diameter of the main bearing spring is the same as the inner diameter of the bearing seats, the outer surface of the main bearing spring abuts against and is slidably connected with the inner surface of the side wall of the bearing seats, the auxiliary bearing spring is embedded in the main bearing spring, the outer diameter of the auxiliary bearing spring is 1/3-2/3 of the inner diameter of the main bearing spring, and the main bearing spring, the auxiliary bearing spring, the auxiliary pressure-bearing springs are opposite in spiral direction, the two elastic cushion blocks are embedded in the two bearing seats respectively and are distributed coaxially with the bearing seats, the elastic cushion blocks are additionally embedded in the auxiliary pressure-bearing springs and are in sliding connection with the inner surfaces of the auxiliary pressure-bearing springs, the elastic cushion blocks exceed the front end faces of the bearing seats by at least 5 mm, and the distance between the elastic cushion blocks in the two bearing seats is 1/5-3/4 of the distance between the two bearing seats.
4. The efficient two-way slope type environment-friendly screening machine according to claim 1, wherein the plurality of screen plates are mutually connected with the upper bearing strip or the lower bearing strip through a fixing mechanism, the fixing mechanism comprises a fixing buckle, a pressing plate, a bolt cushion block and a bolt, the fixing buckle and the pressing plate are welded and fixed together, the fixing buckle penetrates through the screen plates, the bolt cushion block is arranged in the fixing buckle and fixed on the upper bearing strip or the lower bearing strip through the bolt, the upper ends of the upper screen part and the lower screen part are respectively provided with a flow guide plate, the flow guide plates are fixedly connected with the inner wall of the screen box, and the bottom ends of the flow guide plates are abutted against the pressing plate.
5. The high-performance opposite-type cascade environment-friendly screening machine according to claim 1, wherein the flow guide grooves comprise an upper flow guide part and a lower flow guide part, the upper flow guide part is arranged in a splayed shape, two ends of the upper flow guide part are fixed on the inner wall of the screen box, the lower flow guide part is arranged in an inverted splayed shape, two ends of the lower flow guide part are fixed on the inner wall of the screen box, the cross-sectional area of the lower flow guide part is larger than that of the upper flow guide part, and the lower flow guide part is communicated with the fine discharge hole.
6. The high-performance opposite-type step environment-friendly screening machine according to any one of claims 1 to 5, wherein at least two reinforcing ribs are arranged in the screen box, and the reinforcing ribs are fixed on the inner wall of the screen box.
7. The high-performance opposite-type cascade environment-friendly screening machine according to claim 6, wherein the outer wall of the screen box is further provided with an observation through hole, an observation cover is arranged outside the observation through hole, and the observation cover is fixedly connected with the outer wall of the screen box through a bolt.
8. The high-performance opposite-type step environment-friendly screening machine according to claim 7, wherein at least two dust discharge holes are formed in the outer side wall of the screen box.
CN202011245380.7A 2020-11-10 2020-11-10 Efficient bidirectional slope type environment-friendly screening machine Pending CN112439689A (en)

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Application Number Priority Date Filing Date Title
CN202011245380.7A CN112439689A (en) 2020-11-10 2020-11-10 Efficient bidirectional slope type environment-friendly screening machine

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Application Number Priority Date Filing Date Title
CN202011245380.7A CN112439689A (en) 2020-11-10 2020-11-10 Efficient bidirectional slope type environment-friendly screening machine

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Publication Number Publication Date
CN112439689A true CN112439689A (en) 2021-03-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118002456A (en) * 2024-04-09 2024-05-10 甘肃昆仑生化有限责任公司 Pretreatment screening equipment for preparing high-amylose corn starch

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1864870A (en) * 2006-06-23 2006-11-22 孙功民 A vertical combined sieving device
CN203599052U (en) * 2013-12-12 2014-05-21 王安仁 Rhombus environment-friendly sieve
CN208600110U (en) * 2018-04-11 2019-03-15 河南省振源科技有限公司 Large stereoization sieves Environmentally friendly screen
CN209791978U (en) * 2019-01-31 2019-12-17 湖南鸿丰油业有限责任公司 Rapeseed vibration screening device
CN209953224U (en) * 2019-04-24 2020-01-17 焦作恒博科技有限公司 High-efficient environmental protection solid material multi-screen cloth composite screening mechanism
CN210995210U (en) * 2019-10-23 2020-07-14 河南省金特振动机械有限公司 Remove stromatolite sintering screening equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1864870A (en) * 2006-06-23 2006-11-22 孙功民 A vertical combined sieving device
CN203599052U (en) * 2013-12-12 2014-05-21 王安仁 Rhombus environment-friendly sieve
CN208600110U (en) * 2018-04-11 2019-03-15 河南省振源科技有限公司 Large stereoization sieves Environmentally friendly screen
CN209791978U (en) * 2019-01-31 2019-12-17 湖南鸿丰油业有限责任公司 Rapeseed vibration screening device
CN209953224U (en) * 2019-04-24 2020-01-17 焦作恒博科技有限公司 High-efficient environmental protection solid material multi-screen cloth composite screening mechanism
CN210995210U (en) * 2019-10-23 2020-07-14 河南省金特振动机械有限公司 Remove stromatolite sintering screening equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118002456A (en) * 2024-04-09 2024-05-10 甘肃昆仑生化有限责任公司 Pretreatment screening equipment for preparing high-amylose corn starch

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