Shaving board processing used material screening device

The dual-screening device, with its crushing, vibration, and dust extraction mechanisms, solves the problems of insufficient screening accuracy and slow speed of existing devices, enabling rapid, precise screening and efficient manufacturing of particleboard raw materials.

CN223464863UActive Publication Date: 2025-10-24SHANDONG XINBO WOOD CO LTD
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Patent Information

Application Number
CN202422613234.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-29
Publication Date
2025-10-24
Estimated Expiration
2034-10-29

AI Technical Summary

Technical Problem

Existing particleboard processing material screening devices only perform one screening, which is not precise enough, affecting the subsequent production results, and the screening rate is slow.

Method used

The device employs a dual screening mechanism, including a crushing mechanism, a vibration mechanism, a feeding mechanism, and a dust collection mechanism. By crushing, vibrating, and collecting dust, the screening process is accelerated, and large, medium, small, and powder raw materials are collected separately, thereby improving screening efficiency.

Benefits of technology

It enables rapid and precise screening of raw materials, ensuring the quality of particleboard manufacturing, improving work efficiency, and reducing the risk of clogging.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of shaving board processing, in particular to a shaving board processing used material screening device, which not only can accelerate screening of raw materials and improve working efficiency, but also can perform double screening on the raw materials, respectively collect and process the raw materials according to large, medium and small sizes and powder, and ensure the manufacturing effect of shaving boards. Comprising a screening mechanism; the device further comprises a smashing mechanism, a vibrating mechanism, two discharging mechanisms and a dust collection mechanism, the smashing mechanism is installed on the screening mechanism and used for smashing raw materials, the vibrating mechanism is installed on the smashing mechanism and used for driving the screen to vibrate, and the two discharging mechanisms are both installed on the screening mechanism and used for driving the screened raw materials to be discharged. The dust collection mechanism is installed on the screening mechanism and accelerates raw material screening.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shaving board processing, in particular to a raw material screening device for shaving board processing. BACKGROUND

[0002] Shaving board is also called bagasse board, which is made of wood or other lignocellulosic materials, and is glued into a man-made board under the action of heat and pressure after applying adhesive, also known as particle board, mainly used for furniture manufacturing and building industry and train, automobile carriage manufacturing.

[0003] The existing raw material screening device for shaving board processing, such as the raw material screening device for shaving board processing disclosed in the utility model patent with application number 201920420821.9, mainly includes a screening box, a base is installed at the bottom of the screening box, a limiting frame is fixedly installed at the bottom of the base, a crushing mounting frame is installed at the top of the screening box, a control plate is arranged at the bottom of the crushing mounting frame, an occlusion roller is arranged above the control plate, a first motor is arranged on one side of the occlusion roller, the first motor is embeddedly installed on the inner side of the crushing mounting frame, and a feeding hopper is installed at the top of the crushing mounting frame; in use, the raw material to be screened is placed in the feeding hopper, and the first motor is started at the same time to drive the occlusion roller to perform occlusion crushing, the control plate is opened to discharge the crushed raw material, the limiting net plate is used for limiting protection, the vibrator installed on one side of the bottom of the limiting net plate is started at the same time of discharging, the vibration discharging is convenient, the raw material is lowered to the screening box for screening, the air extractor is controlled to be started, the wind power is extracted, the raw material with lighter quality is quickly extracted, the raw material with heavier quality directly falls on the top of the sliding plate, the hydraulic rod and the control table are started at regular time, the sliding plate is pushed to move into the coarse material box, the second motor is started to drive the material stirring frame to rotate and stir the material.

[0004] However, the existing screening device mostly only performs screening once, the screening precision is not enough, which easily affects the subsequent shaving board manufacturing effect, and the existing screening device mostly only relies on the natural falling of raw materials to pass through screening, and the screening rate is slow. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a raw material screening device for shaving board processing, which can accelerate the screening of raw materials, improve the work efficiency, and double-screen the raw materials, collect and process the raw materials according to large, medium, small and powder, and ensure the manufacturing effect of the shaving board.

[0006] The utility model discloses a raw material screening device for shaving board processing, including screening mechanism, still including crushing mechanism, vibration mechanism, two groups of blanking mechanism and dust extraction mechanism, crushing mechanism installs on screening mechanism and carries out the crushing to raw material, and vibration mechanism installs on crushing mechanism and drives screen vibration, and two groups of blanking mechanism all install on screening mechanism and drive the raw material after screening to discharge, and dust extraction mechanism installs on screening mechanism and accelerates raw material screening, and staff transports raw material to crushing mechanism, and crushing mechanism carries out the crushing to big raw material, and the raw material after crushing enters screening in crushing mechanism, and big raw material and medium raw material respectively discharge through two groups of blanking mechanism, and vibration mechanism drives screen vibration, and accelerates raw material to pass through screen while avoiding raw material to be jammed in screen, and small raw material discharges through screening mechanism, and dust extraction mechanism extracts the powder in raw material, and accelerates raw material to pass through screen simultaneously.

[0007] Preferably, the screening mechanism includes a support frame, a conveyor belt, a screening box, and two sets of screens, the bottom end of the support frame is connected with the ground, the conveyor belt is installed on the support frame, the bottom end of the screening box is connected with the top end of the support frame, the inside of the screening box is provided with a cavity, and the two sets of screens are both installed obliquely in the cavity of the screening box; the raw material processed by the crushing mechanism falls onto the screens, the two sets of screens screen the raw material, by obliquely arranging the two sets of screens, the screened raw material is conveniently discharged through the blanking mechanism, and the screened raw material falls onto the conveyor belt, which drives the small raw material to be discharged.

[0008] Preferably, the crushing mechanism includes a feeding hopper, a first motor, a first speed reducer, two sets of crushing rollers, and two sets of gears, the bottom end of the feeding hopper is in communication with the inside of the top end of the screening box, the first motor is installed on the feeding hopper, the first speed reducer is installed on the feeding hopper, the two sets of crushing rollers are both rotatably installed on the feeding hopper, and one of the two sets of crushing rollers is longitudinally connected with the first speed reducer, and the two sets of gears are respectively installed on the two sets of crushing rollers, and the two sets of gears are in meshing transmission; the staff puts the raw material into the feeding hopper, starts the first motor, the first motor drives the crushing roller connected therewith to rotate through the first speed reducer, the crushing roller drives the other crushing roller and gear to rotate through the gear, the two sets of crushing rollers rotate to crush the large raw material put in, and the crushed raw material enters the cavity of the screening box.

[0009] Preferably, the vibrating mechanism comprises two groups of first transmission shafts, four groups of vibrating wheels, a second motor, a second speed reducer, a second transmission shaft and two groups of bevel gears, both groups of first transmission shafts are rotatably installed in the cavity of the screening box and are located below the two groups of screens respectively, two groups of vibrating wheels are installed on each group of first transmission shafts, the second motor is installed on the screening box, the second speed reducer is installed on the screening box and is longitudinally connected with one group of first transmission shafts, the second transmission shaft is installed on the second speed reducer, and the two groups of bevel gears are installed on the second transmission shaft and the other group of first transmission shafts respectively and are in meshing transmission; the second motor is started to drive the first transmission shaft and the second transmission shaft connected therewith to rotate through the second speed reducer, the second transmission shaft drives the other group of first transmission shaft and the bevel gear to rotate through the bevel gear, the two groups of first transmission shafts drive the four groups of vibrating wheels to rotate, and the four groups of vibrating wheels knock the two groups of screens to avoid the raw materials from being blocked on the two groups of screens and accelerate the raw materials to pass through the two groups of screens.

[0010] Preferably, the discharging mechanism comprises a third motor, a third speed reducer, a rotating shaft, three groups of push plates, a discharging plate and two groups of side baffles, two groups of discharging openings are formed in the screening box, the third motor is installed on the screening box, the third speed reducer is installed on the screening box, the rotating shaft is rotatably installed in the cavity of the screening box and is located at the discharging opening of the screening box, the three groups of push plates are all installed on the rotating shaft, the discharging plate is installed on the screening box and is in communication with the discharging opening of the screening box, and the two groups of side baffles are respectively installed on the two groups of discharging plates; the third motor is started to drive the rotating shaft to rotate through the third speed reducer, the rotating shaft drives the three groups of push plates to rotate, the three groups of push plates turn up the raw materials blocked in the discharging opening upward and push them to the discharging plate through the discharging opening of the screening box, and large and medium-sized raw materials are discharged through the two groups of discharging mechanisms respectively, and the two groups of side baffles are arranged to avoid the raw materials from spilling from the sides.

[0011] Preferably, the dust collection mechanism comprises two groups of protective nets, a first air suction pipe, a filter box, an air pump, a second air suction pipe, an air conveying pipe, a gas distribution box and a plurality of nozzles, both groups of protective nets are installed in the cavity of the screening box, the first air suction pipe is in communication with the interiors of the two groups of protective nets, the filter box is installed on the screening box and is in communication with the interior of the first air suction pipe, the bottom end of the air pump is connected with the top end of the screening box, the second air suction pipe is installed on the air pump and is in communication with the interior of the screening box, the air conveying pipe is installed on the air pump, the gas distribution box is installed on the top end of the screening box, and the plurality of nozzles are all installed in the interior of the cavity of the screening box and at the top end; the air pump is started to suck air through the second air suction pipe and the first air suction pipe, so that the powder in the cavity of the screening box enters the filter box through the two groups of protective nets, the two groups of protective nets are arranged to avoid small raw materials from entering the first air suction pipe, the filter box is arranged to block the powder and avoid the powder from entering the air pump, then the air pump conveys air to the gas distribution box and the plurality of nozzles through the air conveying pipe, the plurality of nozzles vertically downwardly divide the air, and the raw materials are accelerated to pass through the two groups of screens.

[0012] Compared with the prior art, the beneficial effects of the utility model are that: the staff transports the raw materials into the crushing mechanism, the crushing mechanism crushes the large raw materials, the crushed raw materials enter into the crushing mechanism for screening, the large raw materials and the medium raw materials are discharged through two groups of discharging mechanisms respectively, the vibration mechanism drives the screen to vibrate, accelerates the raw materials to pass through the screen while avoiding the raw materials from being blocked in the screen, the small raw materials are discharged through the screening mechanism, and the dust suction mechanism sucks out the powder in the raw materials while accelerating the raw materials to pass through the screen. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the isometric structural schematic diagram of the utility model, and

[0014] Figure 2 is the cross-sectional isometric structural schematic diagram of the screening mechanism of the utility model, and

[0015] Figure 3 is the local enlarged cross-sectional isometric structural schematic diagram of the crushing mechanism of the utility model, and

[0016] Figure 4 is the cross-sectional isometric structural schematic diagram of the vibration mechanism, the discharging mechanism and the dust suction mechanism of the utility model, and

[0017] Figure 5 is the local enlarged cross-sectional isometric structural schematic diagram of the discharging mechanism and the dust suction mechanism of the utility model.

[0018] Markings in the drawings: 01, screening mechanism; 11, support frame; 12, conveying belt; 13, screening box; 14, screen; 02, crushing mechanism; 21, feeding hopper; 22, first motor; 23, first speed reducer; 24, crushing roller; 25, gear; 03, vibration mechanism; 31, first transmission shaft; 32, vibration wheel; 33, second motor; 34, second speed reducer; 35, second transmission shaft; 36, bevel gear; 04, discharging mechanism; 41, third motor; 42, third speed reducer; 43, rotating shaft; 44, push plate; 45, discharging plate; 46, side baffle; 05, dust suction mechanism; 51, protective net; 52, first suction pipe; 53, filter box; 54, air pump; 55, second suction pipe; 56, gas conveying pipe; 57, gas distribution box; 58, spray head. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Embodiment 1

[0021] The utility model discloses a raw material screening device for shaving board processing, including screening mechanism 01, still including crushing mechanism 02, vibration mechanism 03, two groups of blanking mechanism 04 and dust extraction mechanism 05, crushing mechanism 02 installs on screening mechanism 01 and carries out the crushing to raw material, vibration mechanism 03 installs on crushing mechanism 02 and drives screen vibration, two groups of blanking mechanism 04 all install on screening mechanism 01 and drive the raw material after screening to discharge, and dust extraction mechanism 05 installs on screening mechanism 01 and accelerates raw material screening, screening mechanism 01 includes support frame 11, conveyer belt 12, screening box 13 and two groups of screen 14, and the bottom of support frame 11 is connected with ground, and conveyer belt 12 installs on support frame 11, and the bottom of screening box 13 is connected with the top end of support frame 11, and the inside of screening box 13 is provided with cavity, and two groups of screen 14 all are obliquely installed in the cavity of screening box 13, crushing mechanism 02 includes feeding hopper 21, first motor 22, first speed reducer 23, two groups of crushing roller 24 and two groups of gear 25, and the bottom of feeding hopper 21 is communicated with the top end inside of screening box 13, and first motor 22 installs on feeding hopper 21, and first speed reducer 23 installs on feeding hopper 21, and two groups of crushing roller 24 all are rotatably installed on feeding hopper 21, and one group of crushing roller 24 is longitudinally connected with first speed reducer 23, and two groups of gear 25 are installed on two groups of crushing roller 24 respectively, and two groups of gear 25 are engaged transmission, vibration mechanism 03 includes two groups of first transmission shaft 31, four groups of vibration wheel 32, second motor 33, second speed reducer 34, second transmission shaft 35 and two groups of bevel gears 36, and two groups of first transmission shaft 31 all are rotatably installed in the cavity of screening box 13 and are located below two groups of screen 14 respectively, and two groups of vibration wheel 32 are installed on every group of first transmission shaft 31, and second motor 33 installs on screening box 13, and second speed reducer 34 installs on screening box 13 and is longitudinally connected with one group of first transmission shaft 31, and second transmission shaft 35 installs on second speed reducer 34, and two groups of bevel gears 36 are installed on second transmission shaft 35 and another group of first transmission shaft 31 respectively, and two groups of bevel gears 36 are engaged transmission, and blanking mechanism 04 includes third motor 41, third speed reducer 42, rotating shaft 43, three groups of paddle 44, discharge plate 45 and two groups of side baffle 46, and two groups of discharge ports are opened on screening box 13, and third motor 41 installs on screening box 13, and third speed reducer 42 installs on screening box 13, and rotating shaft 43 is rotatably installed in the cavity of screening box 13 and is located at the discharge port of screening box 13, and three groups of paddle 44 all install on rotating shaft 43, and discharge plate 45 installs on screening box 13 and is communicated with the discharge port of screening box 13, and two groups of side baffle 46 are installed on two groups of discharge plate 45 respectively, and two groups of blanking mechanism 04 are installed above two groups of screen 14 respectively.In its work, first, the staff will send raw materials into the hopper 21, start the first motor 22, the first motor 22 through the first speed reducer 23 drive the associated crushing roller 24 rotation, crushing roller 24 through the gear 25 drive another set of crushing roller 24 and gear 25 rotation, two groups of crushing roller 24 rotation will send the bulk material crushing, the crushed material into the cavity of the screening box 13, the processed material falls on the screen 14, two groups of screen 14 on the material screening, start the second motor 33, the second motor 33 through the second speed reducer 34 drive the associated first drive shaft 31 and second drive shaft 35 rotation, the second drive shaft 35 through the bevel gear 36 drive another set of first drive shaft 31 and bevel gear 36 rotation, two groups of first drive shaft 31 drive four groups of vibration wheel 32 rotation, four groups of vibration wheel 32 on two groups of screen 14 knocking, to avoid the material jammed on the two groups of screen 14, accelerate the material through the two groups of screen 14, start the third motor 41, the third motor 41 through the third speed reducer 42 drive the shaft 43 rotation, the shaft 43 drive three groups of plate 44 rotation, three groups of plate 44 will be jammed in the discharge port of the material up, through the discharge port of the screening box 13 to the discharge plate 45, the bulk material and medium block material are discharged through two groups of discharge mechanism 04, by setting two groups of side baffle 46 to avoid the material from the side of the shed, small block material after screening falls on the conveyor belt 12, the conveyor belt 12 drive small block material discharge.

[0022] Example 2

[0023] As Figures 1 to 5As shown, the raw material screening device for shaving board processing, based on embodiment 1; the dust collection mechanism 05 includes two groups of protective nets 51, a first air suction pipe 52, a filter box 53, an air pump 54, a second air suction pipe 55, a gas conveying pipe 56, a gas distribution box 57 and multiple groups of nozzles 58, two groups of protective nets 51 are installed in the cavity of the screening box 13, the first air suction pipe 52 is in communication with the inside of the two groups of protective nets 51, the filter box 53 is installed on the screening box 13 and is in communication with the inside of the first air suction pipe 52, the bottom end of the air pump 54 is connected with the top end of the screening box 13, the second air suction pipe 55 is installed on the air pump 54 and is in communication with the inside of the screening box 13, the gas conveying pipe 56 is installed on the air pump 54, the gas distribution box 57 is installed on the top end of the screening box 13, and multiple groups of nozzles 58 are installed on the inside top end of the cavity of the screening box 13; when it works, first, the staff puts the raw materials into the feeding hopper 21, starts the first motor 22, and the first motor 22 drives the crushing roller 24 connected thereto to rotate through the first speed reducer 23, the crushing roller 24 drives another crushing roller 24 and gear 25 to rotate through the gear 25, and the two groups of crushing rollers 24 crush the large block of raw materials put in, and the crushed raw materials enter the cavity of the screening box 13, the processed raw materials fall on the screen 14, and the two groups of screens 14 screen the raw materials, the second motor 33 is started, and the second motor 33 drives the first transmission shaft 31 and the second transmission shaft 35 connected thereto to rotate through the second speed reducer 34, the second transmission shaft 35 drives another first transmission shaft 31 and bevel gear 36 to rotate through bevel gear 36, and the two groups of first transmission shaft 31 drive four groups of vibration wheels 32 to rotate, and the four groups of vibration wheels 32 knock the two groups of screens 14 to avoid the raw materials from being blocked on the two groups of screens 14, and accelerate the raw materials to pass through the two groups of screens 14, the third motor 41 is started, and the third motor 41 drives the rotating shaft 43 to rotate through the third speed reducer 42, the rotating shaft 43 drives three groups of push plates 44 to rotate, the three groups of push plates 44 turn up the raw materials blocked in the discharge port upward, and the raw materials are pushed to the discharge plate 45 through the discharge port of the screening box 13, the large block of raw materials and the medium block of raw materials are discharged through the two groups of discharging mechanisms 04, the two groups of side baffles 46 are arranged to avoid the raw materials from spilling from the side, the small block of raw materials after screening falls on the conveyor belt 12, the conveyor belt 12 drives the small block of raw materials to be discharged, the air pump 54 is started, the air pump 54 sucks air through the second air suction pipe 55 and the first air suction pipe 52, so that the powder in the cavity of the screening box 13 enters the filter box 53 through the two groups of protective nets 51, the two groups of protective nets 51 are arranged to avoid the small block of raw materials from entering the first air suction pipe 52, the filter box 53 is arranged to block the powder, avoid the powder from entering the air pump 54, then the air pump 54 conveys air to the gas distribution box 57 and multiple groups of nozzles 58 through the gas conveying pipe 56, and the multiple groups of nozzles 58 vertically downwardly divide the air, and accelerate the raw materials to pass through the two groups of screens 14.

[0024] The first motor 22, the first speed reducer 23, the second motor 33, the second speed reducer 34, the third motor 41, the third speed reducer 42 and the dial plate 44 are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0025] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, several improvements and modifications can be made without departing from the technical principles of the utility model, and these improvements and modifications should also be regarded as the protection range of the utility model.

Claims

1. A raw material screening device for chipboard processing, comprising a screening mechanism (01); characterized in that, It also includes crushing mechanism (02), vibration mechanism (03), two groups of discharge mechanism (04) and dust collection mechanism (05), crushing mechanism (02) is installed on screening mechanism (01) and crushing raw materials, vibration mechanism (03) is installed on crushing mechanism (02) and drive screen vibration, two groups of discharge mechanism (04) are installed on screening mechanism (01) and drive the screened raw materials discharge, dust collection mechanism (05) is installed on screening mechanism (01) and accelerate raw material screening.

2. A raw material screening device for a particle board according to claim 1, wherein The screening mechanism (01) comprises a support frame (11), a conveyor belt (12), a screening box (13) and two groups of screen meshes (14), the bottom end of the support frame (11) is connected with the ground, the conveyor belt (12) is installed on the support frame (11), the bottom end of the screening box (13) is connected with the top end of the support frame (11), the inside of the screening box (13) is provided with a cavity, and the two groups of screen meshes (14) are both installed in the cavity of the screening box (13) in an inclined manner.

3. A raw material screening device for a particle board according to claim 2, wherein The crushing mechanism (02) comprises a feeding hopper (21), a first motor (22), a first speed reducer (23), two groups of crushing rollers (24) and two groups of gears (25), the bottom end of the feeding hopper (21) is in communication with the top end inside of the screening box (13), the first motor (22) is installed on the feeding hopper (21), the first speed reducer (23) is installed on the feeding hopper (21), the two groups of crushing rollers (24) are both rotatably installed on the feeding hopper (21), and one of the two groups of crushing rollers (24) is longitudinally connected with the first speed reducer (23), and the two groups of gears (25) are respectively installed on the two groups of crushing rollers (24), and the two groups of gears (25) are in meshing transmission.

4. A raw material screening device for a particle board according to claim 2, wherein The vibration mechanism (03) comprises two groups of first transmission shafts (31), four groups of vibration wheels (32), a second motor (33), a second speed reducer (34), a second transmission shaft (35) and two groups of bevel gears (36), the two groups of first transmission shafts (31) are both rotatably installed in the cavity of the screening box (13) and are located below the two groups of screen meshes (14), respectively, two groups of vibration wheels (32) are installed on each first transmission shaft (31), the second motor (33) is installed on the screening box (13), the second speed reducer (34) is installed on the screening box (13) and is longitudinally connected with one of the first transmission shafts (31), the second transmission shaft (35) is installed on the second speed reducer (34), and the two groups of bevel gears (36) are respectively installed on the second transmission shaft (35) and the other first transmission shaft (31), and the two groups of bevel gears (36) are in meshing transmission.

5. A raw material screening device for a particle board according to claim 2, wherein The discharging mechanism (04) comprises a third motor (41), a third speed reducer (42), a rotating shaft (43), three groups of shifting plates (44), a discharging plate (45) and two groups of side baffles (46), two groups of discharging openings are formed in the screening box (13), the third motor (41) is installed on the screening box (13), the third speed reducer (42) is installed on the screening box (13), the rotating shaft (43) is rotatably installed in the cavity of the screening box (13) and located at the discharging opening of the screening box (13), the three groups of shifting plates (44) are all installed on the rotating shaft (43), the discharging plate (45) is installed on the screening box (13) and communicates with the discharging opening of the screening box (13), and the two groups of side baffles (46) are respectively installed on the two groups of the discharging plate (45). Two groups of discharging mechanisms (04) are respectively installed above the two groups of screen meshes (14).

6. A raw material screening device for a particle board according to claim 2, wherein The dust collection mechanism (05) comprises two groups of protective nets (51), a first air suction pipe (52), a filter box (53), an air pump (54), a second air suction pipe (55), a gas conveying pipe (56), a gas distribution box (57) and a plurality of spray heads (58), the two groups of protective nets (51) are all installed in the cavity of the screening box (13), the first air suction pipe (52) communicates with the interiors of the two groups of protective nets (51), the filter box (53) is installed on the screening box (13) and communicates with the interior of the first air suction pipe (52), the bottom end of the air pump (54) is connected with the top end of the screening box (13), the second air suction pipe (55) is installed on the air pump (54) and communicates with the interior of the screening box (13), the gas conveying pipe (56) is installed on the air pump (54), the gas distribution box (57) is installed on the top end of the screening box (13), and the plurality of spray heads (58) are all installed in the cavity interior top end of the screening box (13).

Citation Information

Patent Citations

  • Incoming material screening device for shaving board processing

    CN209697482U