CN113814167B - Particle screening system - Google Patents

Particle screening system Download PDF

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Publication number
CN113814167B
CN113814167B CN202010565752.8A CN202010565752A CN113814167B CN 113814167 B CN113814167 B CN 113814167B CN 202010565752 A CN202010565752 A CN 202010565752A CN 113814167 B CN113814167 B CN 113814167B
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China
Prior art keywords
air
screen
particle
particle screening
screening system
Prior art date
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Application number
CN202010565752.8A
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Chinese (zh)
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CN113814167A (en
Inventor
戴波
魏进超
刘克俭
李俊杰
温荣耀
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Zhongye Changtian International Engineering Co Ltd
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Zhongye Changtian International Engineering Co Ltd
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Priority to CN202010565752.8A priority Critical patent/CN113814167B/en
Publication of CN113814167A publication Critical patent/CN113814167A/en
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Classifications

    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • 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
    • 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
    • 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
    • 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
    • B07B11/02—Arrangement of air or material conditioning accessories
    • 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
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall

Abstract

The invention discloses a particle screening system which comprises a particle screening device, wherein the particle screening device comprises a screen box, a winnowing device and a vibrating screen, a material inlet and a first material outlet are formed in the screen box, the winnowing device and the vibrating screen are both positioned in the screen box, and the winnowing device is used for receiving particle blanking at the upper output end of the vibrating screen. When the particle screening system works, the vibrating screen works, particles enter the upper part of the vibrating screen through the material inlet, small particle materials leak down through the vibrating screen, large particle materials enter the winnowing device through the vibrating screen, and particles at the purifying port are discharged through the first material outlet. In the particle screening system that this application provided, through setting up wind selector, take out the little particulate matter on particle surface through the air current, and then realize screening back granule purification, reduce particle surface dust content.

Description

Particle screening system
Technical Field
The invention relates to the technical field of particle screening and purifying, in particular to a particle screening system.
Background
The activated carbon flue gas purification technology has the advantage of multi-pollutant synergistic efficient purification, and is suitable for the complex (SO) components of sintering flue gas 2 、NO x Dust, O 2 The characteristics of high temperature fluctuation (110-180 ℃) and water vapor and heavy metal are successfully applied to a sintering flue gas purification system, and meanwhile, the method is popularized to multiple industries such as coking, electric power and the like, and has a very good multi-pollutant removal effect.
In the traditional activated carbon flue gas purification process, three main-subject equipment including an adsorption tower, a regeneration tower and a conveyor are included, the effective height of the tower body of the adsorption tower is about 30m, activated carbon is used as an adsorbent and a catalyst to perform efficient adsorption and attachment on pollutants in the adsorption tower, the activated carbon which adsorbs the pollutants moves from top to bottom, is sent to the regeneration tower through a conveying system to be heated and regenerated, and the activated carbon is inevitably damaged due to the self-friction and analytic abrasion in the moving process, so that the initial columnar activated carbon with complete forms is changed into a finer activated carbon mixture with different particle sizes.
However, as the activated carbon is heated and regenerated in the analytic tower and then is screened by the vibrating screen to remove the part with smaller particle size, the activated carbon with smaller particle size inevitably enters the adsorption system, and meanwhile, the surface of the large-particle activated carbon can be covered with superfine carbon powder and also enters the adsorption system due to the electrostatic effect. The superfine carbon powder can influence the system safety and increase the operation cost in the adsorption tower.
Therefore, how to reduce the dust content on the surface of the particles is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a particle screening system for reducing the dust content on the surface of particles.
In order to achieve the above purpose, the invention provides a particle screening system, which comprises a particle screening device, wherein the particle screening device comprises a screen box, a winnowing device and a vibrating screen, a material inlet and a first material outlet are arranged on the screen box, the winnowing device and the vibrating screen are both positioned in the screen box, and the winnowing device is used for receiving particle blanking at the upper output end of the vibrating screen.
Preferably, the winnowing device is fixedly connected with a sieve plate of the vibrating sieve, and the sieve plate is fixedly connected with the sieve box.
Preferably, the winnowing device comprises a gas transmission device, a gas chamber and a porous plate, the top of the gas chamber is communicated with the screen box through the porous plate, a dust removal air outlet is formed in the screen box, an air inlet of the gas chamber is connected with an air outlet of the gas transmission device, and the porous plate is connected with a discharge end of the screen plate.
Preferably, at least two independent air chambers are sequentially arranged along the movement direction of the particles, the wind speed of the outlets of the air chambers is sequentially reduced along the movement direction of the particles, and the dedusting wind outlet is positioned on the tail end wall surface of the movement direction of the particles in the sieve box.
Preferably, the air separation device further comprises a circulating fan, a ventilation branch pipe, a ventilation main pipe with an air inlet end connected with the dust removal air outlet, and a dust removal device for purifying the exhaust gas of the dust removal air outlet, the circulating fan is installed on the ventilation main pipe, one end of the ventilation branch pipe is connected with an air outlet of the ventilation main pipe, the other end of the ventilation branch pipe is connected with the air chambers, each air chamber is at least connected with one ventilation branch pipe, and circulating air in the air separation device is low-oxygen circulating gas circulation.
Preferably, the air chambers are in one-to-one correspondence with the ventilation branch pipes, and each ventilation branch pipe is provided with an air flow regulating valve.
Preferably, a first flexible connecting piece is arranged at the dedusting air outlet.
Preferably, a second material outlet for outputting particles below the screen plate of the vibrating screen is arranged on the screen box, and the first material outlet and the second material outlet are positioned at the same end of the screen box.
Preferably, the second material outlets are multiple, and all the second material outlets are symmetrically distributed on two opposite sides of the vertical surface of the first material outlet.
Preferably, the device further comprises a collecting bin connected with the second material outlet.
Preferably, the material inlet is provided with a second flexible connecting piece, the first material outlet is provided with a third flexible connecting piece, and the second material outlet is provided with a fourth flexible connecting piece.
Preferably, the particle screening device further comprises a support, a vibrating elastic piece, a guide rail and a guide rod, wherein the sliding direction of the guide rod is parallel to the vibrating elastic piece, the guide rail is in sliding fit with the guide rod, one of the guide rail and the guide rod is hinged to the support, the other guide rail is hinged to the screen box, an anti-deflection disc is arranged in the guide rail by the guide rod, and the support is arranged at the lower part of the screen box.
Preferably, a vibration exciter, a motor and a cam connected with the output end of the motor are arranged in the screen box, and the vibration exciter is abutted with the cam surface of the cam.
Preferably, the vibration isolator further comprises a plurality of vibration isolators, and the top ends of the vibration isolators are connected with the bracket.
Preferably, the device further comprises a collecting hopper connected with the first material outlet and a gas locking discharge valve arranged at the bottom end of the collecting hopper.
In the technical scheme, the particle screening system provided by the invention comprises a particle screening device, wherein the particle screening device comprises a screen box, a winnowing device and a vibrating screen, a material inlet and a first material outlet are formed in the screen box, the winnowing device and the vibrating screen are both positioned in the screen box, and the winnowing device is used for receiving particle blanking at the upper output end of the vibrating screen. When the particle screening system works, the vibrating screen works, particles enter the upper part of the vibrating screen through the material inlet, small particle materials leak down through the vibrating screen, large particle materials enter the winnowing device through the vibrating screen, and particles at the purifying port are discharged through the first material outlet.
Through the above-mentioned description, in the granule screening system that this application provided, through setting up wind selector, carry out the little particulate matter on granule surface through the air current, and then realize screening back granule purification, reduce granule surface dust content.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a partial structure of a particle screening system according to an embodiment of the present invention;
FIG. 2 is a partial view of the operation of a particle screening system according to an embodiment of the present invention;
FIG. 3 is a right side view of a particle screening system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a particle screening system according to an embodiment of the present invention.
Wherein in fig. 1-4: 1-a screen box, 101-a second flexible connecting piece, 102-a vibration elastic piece, 103-a guide rail, 104-a vibration exciter, 105-a motor, 106-a first flexible connecting piece, 107-a third flexible connecting piece, 108-a fourth flexible connecting piece, 109-a gas transmission device, 110-a guide rod, 111-a bracket, 112-a screen plate, 113-an air chamber, 114-a winnowing device, 115-a driving frame, 116-an anti-deflection disc, 117-a material inlet and 118-a dust removal wind outlet;
2-vibration isolator, 3-aggregate bin, 4-air locking discharge valve;
5-dust removing device, 501-first dust removing pipeline, 502-second dust removing pipeline;
6-circulating fans, 601-ventilation main pipes and 602-ventilation branch pipes.
Detailed Description
The core of the invention is to provide an information acquisition device, which improves the replacement efficiency.
The present invention will be described in further detail below with reference to the drawings and embodiments, so that those skilled in the art can better understand the technical solutions of the present invention.
Please refer to fig. 1 to 4.
In a specific embodiment, the particle screening system provided by the specific embodiment of the invention comprises a particle screening device, wherein the particle screening device comprises a screen box 1, a winnowing device 114 and a vibrating screen, a material inlet 117 and a first material outlet are formed in the screen box 1, the winnowing device 114 and the vibrating screen are both positioned in the screen box 1, and the winnowing device 114 is used for receiving particle blanking at the upper output end of the vibrating screen.
When the particle screening system works, the vibrating screen works, particles enter the upper part of the vibrating screen through the material inlet 117, small particle materials leak down through the vibrating screen, large particle materials enter the air separation device 114 through the vibrating screen, and particles at the purifying port are discharged through the first material outlet.
It can be seen from the above description that, in the particle screening system provided in the embodiments of the present application, the air separation device 114 is provided to carry out small particulate matters on the surface of particles through air flow, so as to clean the particles after screening, and reduce the dust content on the surface of the particles.
In one embodiment, the air separation device 114 is fixedly connected to the screen plate 112 of the vibrating screen, wherein the screen plate 112 is a mesh screen plate. The screen plate 112 is fixedly connected with the screen box 1. The screen deck 112 and the air separation unit 114 both vibrate with the screen box 1. In operation, the front section of the screen box 1 is provided with a screen plate 112, the screen holes are provided with corresponding sizes according to the size of the particles required to be screened, the screen plate 112 divides the screen box 1 into an upper part and a lower part, the upper part is large particles, and the lower part is small particles screened out.
Specifically, the air separation device 114 includes an air delivery device 109, an air chamber 113 and a porous plate, the top of the air chamber 113 is communicated with the screen box 1 through the porous plate, a dust removal air outlet 118 is arranged on the screen box 1, and an air inlet of the air chamber 113 is connected with an air outlet of the air delivery device 109. Wherein the air chamber 113 may be plural, and the holes on the porous plate are arranged as needed.
In another embodiment, at least two independent air chambers 113 are sequentially arranged along the movement direction of the particles, the air speed of the outlets of the air chambers 113 is sequentially reduced along the movement direction of the particles, and the dedusting air outlet 118 is positioned on the tail end wall surface of the movement direction of the particles in the screen box 1. When the particles pass through the porous plate, the air in the air chamber 113 is ejected from the air gap and acts on the particles, so that the ultrafine dust attached to the surfaces of the particles is blown off and flows away along with the air flow. In order to enhance the air screening effect and effectively control, the air chamber 113 can be divided into a plurality of independent air chambers 113, as shown in the figure, the air volume is gradually reduced by adding the air volume into the air chamber 113 from left to right, the effect is that small particles are concentrated under the bottom layer due to vibration effect, the material gap is small, enough air volume and air speed are needed to peel ultrafine dust from large particles, the right is closer to the air flow outlet, the left air intensively flows through the upper right side, the air volume is overlapped, the air speed is increased sharply, qualified small particles are easily taken away by the overlarge air volume and the air speed, and the particle loss is increased.
The air separation device 114 further comprises a circulating fan 6, an air ventilation branch pipe 602, an air ventilation main pipe 601 with an air inlet end connected with the dust removal air outlet 118 and a dust removal device 5 for purifying air discharged by the dust removal air outlet 118, wherein the circulating fan 6 is arranged on the air ventilation main pipe 601, one end of the air ventilation branch pipe 602 is connected with an air outlet of the air ventilation main pipe 601, the other end of the air ventilation branch pipe 602 is connected with air chambers 113, and each air chamber 113 is at least connected with one air ventilation branch pipe 602.
Considering that after the activated carbon is resolved, the material is cooled to be below the safe temperature, but the temperature of partial activated carbon particles is still higher, if ordinary air is introduced for winnowing, the device can cause high-temperature active combustion, damage equipment and influence the operation of the whole system, preferably, the circulating air in the winnowing device 114 is low-oxygen circulating gas circulation, and particularly, the low-oxygen gas can be nitrogen.
In order to facilitate the adjustment of the air volume of the air outlet, the air chambers 113 are preferably in one-to-one correspondence with the air vent branch pipes 602, and each air vent branch pipe 602 is provided with an air volume adjusting valve, and specifically, the air volume adjusting valve is an electric control valve capable of being controlled remotely.
After the dust-containing gas after winnowing is purified in the dust removing device 5 through the first dust removing pipeline 501, clean gas is conveyed to the ventilation main pipe 601 through a fan, the ventilation main pipe 601 is divided into a plurality of air inlet branch pipes, each branch pipe is provided with an air flow regulating valve, the flow rate of each branch pipe is controlled, the air inlet pipe drives the gas into the air chamber 113, the gas is sprayed out of a porous plate, the gas is collected by the dust removing air outlet 118 after being sprayed into the material, enters the first dust removing pipeline 501, then enters the dust removing device 5, and then flows into the fan through the second dust removing pipeline 502. The circulating operation can solve the problem of safe protection of the active carbon combustion.
In one embodiment, the screen box 1 is provided with a second material outlet for outputting particles below the screen deck 112 of the vibrating screen, the first material outlet and the second material outlet being located at the same end of the screen box 1. And a collecting bin 3 is arranged outside the second material outlet.
In order to avoid interference of two aggregate positions, the second material outlets are multiple, and all the second material outlets are symmetrically distributed on two opposite sides of the vertical surface of the first material outlet. The number of the second material outlets can be two, the position of the second material outlet is lower than that of the first material outlet, and the second material outlet is provided with a seed collecting hopper. Namely, a second material outlet is arranged on the left side and the right side below the first material outlet.
In one embodiment, a first flexible connection 106 is provided at the dedusting air outlet 118. The material inlet 117 is provided with a second flexible connection 101, the first material outlet is provided with a third flexible connection 107, and the second material outlet is provided with a fourth flexible connection 108. The screen box 1 is connected with an external pipeline through the first flexible connecting piece 106, and qualified particles after screening circulate at the upper part of the screen plate 112 and are connected with the pipeline through the third flexible connecting piece 107; the lower part is used for collecting small particles screened out, and the small particles are connected with a pipeline through a fourth flexible connecting piece 108, so that the vibration of the screen box 1 is prevented from being influenced by an external structure.
The particle screening device further comprises a support 111, a vibrating elastic piece 102, a guide rail 103 and a guide rod 110, wherein the sliding direction of the guide rod 110 is parallel to the vibrating elastic piece 102, the guide rail 103 is in sliding fit with the guide rod 110, one of the guide rail 103 and the guide rod 110 is hinged with the support 111, the other is hinged with the screen box 1, an anti-deflection disc 116 is arranged in the guide rail 103 in the guide rod 110, and the support 111 is arranged at the lower part of the screen box 1. Specifically, the guide rail 103, the guide rod 110 and the vibration elastic member 102 are all multiple, the guide rail 103 and the guide rod 110 are all multiple, and the guide rod 110 is provided with an anti-deflection disc 116 in the inner test of the guide rail 103 to prevent the screen box 1 from moving in a left-right direction. Wherein the support 111 is fixed relative to the external base. Specifically, two sides of the screen box, which are arranged back to back, are respectively provided with a vibrating elastic piece 102, a guide rail 103 and a guide rod 110.
Specifically, the vibration elastic member 102 may be a spring, and the length direction of the spring is parallel to the sliding direction of the guide rod 110.
In one embodiment, a vibration exciter 104, a motor 105 and a cam connected to the output end of the motor 105 are provided in the screen box 1, and the vibration exciter 104 is in contact with the cam surface of the cam. The circular rotation cam acts on the vibration exciter 104 to enable the vibration exciter 104 to generate displacement to drive the screen box 1 to generate vibration, the motor 105 is fixed on the driving frame 115, and the driving frame 115 is supported on the support 111.
Specifically, the particle screening system further comprises a plurality of vibration isolators 2, and the top ends of the vibration isolators 2 are connected to a bracket 111. Preferably, the vibration isolators 2 are a plurality of, and two adjacent vibration isolators 2 are distributed at equal intervals
On the basis of the above schemes, preferably, the particle screening system further comprises a collecting hopper connected with the first material outlet and a gas locking discharge valve 4 arranged at the bottom end of the collecting hopper.
Particles enter the screen box 1 through a material inlet, the motor 105 rotates to drive the vibration exciter 104 to generate displacement, the vibration elastic piece 102 resets the displacement, periodic vibration is generated, the material generates parabolic motion to form Brazil effect, small particles move downwards and are screened out through the screen plate 112, after the particles enter the wind selection section, air flow acts on the particles to peel off ultrafine dust attached to the particles, the air flow moves along with the air flow, after the air flow is collected through the dust removal wind outlet 118, the collected ultrafine dust enters the dust removal treatment to reach the standard and is discharged, and the collected ultrafine dust is reused. The gas locking discharge valve 4 prevents gas from overflowing from the discharge port of the lower pipeline.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. The particle screening system is characterized by comprising a particle screening device, wherein the particle screening device comprises a screen box (1), a winnowing device (114) and a vibrating screen, a material inlet (117) and a first material outlet are formed in the screen box (1), the winnowing device (114) and the vibrating screen are both positioned in the screen box (1), and the winnowing device (114) is used for receiving particle blanking at the upper output end of the vibrating screen;
the air separation device (114) comprises an air conveying device (109), an air chamber (113) and a porous plate, the top of the air chamber (113) is communicated with the screen box (1) through the porous plate, a dust removal air outlet (118) is formed in the screen box (1), an air inlet of the air chamber (113) is connected with an air outlet of the air conveying device (109), and the porous plate is connected with a discharge end of a screen plate (112) of the vibrating screen;
at least two independent air chambers (113) are sequentially arranged along the particle movement direction, the air speed of the outlets of the air chambers (113) is sequentially reduced along the particle movement direction, and the dedusting air outlets (118) are positioned on the tail end wall surface of the sieve box (1) in the particle movement direction;
the air separation device is characterized in that the air separation device (114) further comprises a circulating fan (6), an air separation branch pipe (602), an air inlet end, an air separation main pipe (601) connected with the air separation outlet (118) and a dust removal device (5) used for purifying exhaust gas of the air separation outlet (118), the circulating fan (6) is installed on the air separation main pipe (601), one end of the air separation branch pipe (602) is connected with an air outlet of the air separation main pipe (601), the other end of the air separation branch pipe is connected with an air chamber (113), each air chamber (113) is at least connected with one air separation branch pipe (602), and circulating air in the air separation device (114) is low-oxygen circulating gas.
2. The particle screening system according to claim 1, characterized in that the air separation device (114) is fixedly connected with a screen plate (112) of the vibrating screen, which screen plate (112) is fixedly connected with the screen box (1).
3. The particle screening system according to claim 1, wherein the air chambers (113) are in one-to-one correspondence with the ventilation branch pipes (602), and an air flow regulating valve is arranged on each ventilation branch pipe (602).
4. A particle screening system according to claim 1, characterized in that the dedusting air outlet (118) is provided with a first flexible connection (106).
5. A particle screening system according to claim 1, characterized in that the screen box (1) is provided with a second material outlet for outputting particles under the screen deck (112) of the vibrating screen, the first material outlet and the second material outlet being located at the same end of the screen box (1).
6. The particle screening system of claim 5, wherein said second plurality of material outlets are symmetrically disposed on opposite sides of a vertical plane of said first material outlet.
7. A particle screening system according to claim 5, further comprising a collecting bin (3) connected to the second material outlet.
8. A particle screening system according to claim 5, characterized in that the material inlet (117) is provided with a second flexible connection (101), the first material outlet is provided with a third flexible connection (107), and the second material outlet is provided with a fourth flexible connection (108).
9. The particle screening system according to claim 1, characterized in that the particle screening device further comprises a support (111), a vibrating elastic member (102), a guide rail (103) and a guide rod (110), wherein the guide rod (110) is arranged in parallel to the vibrating elastic member (102) in a sliding direction, the guide rail (103) and the guide rod (110) are in sliding fit, one of the guide rail (103) and the guide rod (110) is hinged to the support (111), the other is hinged to the screen box (1), an anti-deflection disc (116) is arranged in the guide rail (103) in a built-in mode, and the support (111) is arranged at the lower part of the screen box (1).
10. The particle screening system according to claim 1, characterized in that a vibration exciter (104), a motor (105) and a cam connected with the output end of the motor (105) are arranged in the screen box (1), and the vibration exciter (104) is abutted with the cam surface of the cam.
11. The particle screening system according to claim 9, further comprising a plurality of vibration isolators (2), the top ends of the vibration isolators (2) being connected to the bracket (111).
12. A particle screening system according to any one of claims 1-11, further comprising a collecting hopper connected to the first material outlet and a gas lock discharge valve (4) mounted at the bottom end of the collecting hopper.
CN202010565752.8A 2020-06-19 2020-06-19 Particle screening system Active CN113814167B (en)

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CN206240785U (en) * 2016-12-01 2017-06-13 郑州一帆机械设备有限公司 A kind of material sorting device
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CN109454001B (en) * 2018-12-11 2024-02-02 河南威猛振动设备股份有限公司 Vibration winnowing device
CN209918062U (en) * 2019-03-05 2020-01-10 凤阳县正功矿业有限公司 Environment-friendly screening equipment for quartz sand processing

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