CN115228721A

CN115228721A - Food screening machine and process thereof

Info

Publication number: CN115228721A
Application number: CN202210850163.3A
Authority: CN
Inventors: 单晓峰; 傅林高; 顾国祥
Original assignee: Hangzhou Chenyuanchang Food Co ltd
Current assignee: Hangzhou Chenyuanchang Food Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-10-25
Anticipated expiration: 2042-07-20
Also published as: CN115228721B

Abstract

The application relates to a food screening machine, which comprises a rack and a screening box fixedly arranged on the rack, wherein a feed inlet is formed in the top wall of the screening box, a blanking port is formed in the bottom wall of the screening box, a mounting frame is fixedly arranged in the screening box, a plurality of screening discs are arranged on the mounting frame from bottom to top and are respectively used for filtering food particles with different sizes, and the sizes of the food particles which can be filtered by the screening discs are gradually increased from bottom to top; the sieve tray rotates to set up on the mounting bracket, is provided with the drive assembly who is used for ordering about a plurality of sieve trays and deflects downwards simultaneously on the mounting bracket, and a plurality of discharge gates have been seted up to the lateral wall from the bottom up of screening case, and every discharge gate department communicates respectively has a guide pipeline, and every discharge gate corresponds a sieve tray respectively, and every discharge gate department all is provided with the sealing member that is used for sealing the discharge gate. This application has when collecting the food after the screening is accomplished, staff's low in labor strength's effect.

Description

Food screening machine and process thereof

Technical Field

The application relates to the technical field of food production and processing, in particular to a food screening machine and a process thereof.

Background

The screening machine is a machine used for screening granular materials with different sizes; the screening machine is often applied to a plurality of industries, such as chemical industry, food, building and the like, and the requirements of different industries on the screening machine are different according to different application industries of the screening machine.

At present, when food is processed, food particles with different sizes are generally required to be screened, a plurality of screening trays are arranged on a screening machine from top to bottom, and the sizes of the food particles which can be filtered by the screening trays are gradually increased from bottom to top; the sieve separator is when sieving food, places food on the sieve tray of the superiors, makes food vibrations or slip on the sieve tray to make and see through the sieve tray than the little food particulate matter in sieve tray upper screen mesh aperture and drop to the sieve tray of lower floor, sieve food particulate matter of different volume sizes, later collect respectively food on a plurality of sieve trays, thereby accomplish the screening to food.

However, after the screening machine finishes screening the food particles, the worker usually collects the food on the screening tray manually, which is labor-intensive.

Disclosure of Invention

In order to reduce the labor intensity of workers, the application provides a food screening machine and a process thereof.

In a first aspect, the application provides a food screening machine, adopts following technical scheme:

a food screening machine comprises a rack and a screening box fixedly arranged on the rack, wherein a feed inlet is formed in the top wall of the screening box, a blanking port is formed in the bottom wall of the screening box, a mounting frame is fixedly arranged in the screening box, a plurality of screening discs are arranged on the mounting frame from bottom to top and are respectively used for filtering food particles with different sizes, and the sizes of the food particles which can be filtered by the screening discs are gradually increased from bottom to top; the sieve tray rotates to set up on the mounting bracket, be provided with on the mounting bracket and be used for ordering about the drive assembly that a plurality of sieve trays deflected downwards simultaneously, a plurality of discharge gates have been seted up, every to the lateral wall from the bottom up of screening case discharge gate department communicates respectively has a guide pipeline, and every discharge gate corresponds a sieve tray, every discharge gate department all is provided with the sealing member that is used for sealing the discharge gate.

Through adopting above-mentioned technical scheme, when sieving the food particulate matter, pour the food particulate matter into the screening incasement from the feed inlet department of screening case, sieve the food particulate matter of equidimension not respectively through a plurality of sieve trays, the food particulate matter after the screening stops respectively on the sieve tray that corresponds according to the volume, afterwards, open the sealing member of every discharge gate department on the screening case, order about a plurality of sieve trays and deflect downwards simultaneously through drive assembly, the food particulate matter on every sieve tray gets into in the passage that corresponds separately, the staff only need to collect respectively to the food particulate matter that a plurality of guide pipelines derived can, when collecting the food after accomplishing the screening, staff's low in labor strength.

Optionally, be provided with a plurality of fixed blocks, every from the bottom up on the mounting bracket the spout has all been seted up on the roof of fixed block, it is provided with the installation piece to slide in the spout, the fixed stopper that is provided with on the lateral wall of installation piece, the spacing groove has been seted up along the slip direction of installation piece to the side of spout, and the stopper slides and sets up in sliding, be provided with on the fixed block and be used for ordering about the installation piece to keeping away from the gliding first elastic component of fixed block direction, every all fixedly on the installation piece be provided with one the sieve tray, drive assembly is used for ordering about the fixed block and rotates.

Through adopting above-mentioned technical scheme, when the food particulate matter dropped to the sieve tray, the impact force that produces when colliding food and sieve tray through first elastic component cushioned to prevent to a certain extent that the food particulate matter from damaging.

Optionally, drive assembly includes worm wheel, worm and driving source, every equal coaxial fixation is provided with in the axis of rotation of fixed block the worm wheel, the worm rotates and sets up on the mounting bracket, just the worm is with a plurality of the worm wheel meshing, the driving source is used for ordering about the worm and rotates.

Through adopting above-mentioned technical scheme, drive the worm through the driving source and rotate, when the worm rotated, drive a plurality of worm wheels and rotate simultaneously to drive a plurality of fixed blocks and rotate simultaneously.

Optionally, the sealing member is including accepting the board, accept the board and articulate in the screening case, just accept board and discharge gate looks adaptation, every fixed transfer line that is provided with on the fixed block, it is provided with the slider all to slide along the length direction of transfer line on the transfer line, it is provided with the connecting rod to accept to fix on the board, the connecting rod is articulated with the slider, be provided with on the transfer line and be used for ordering about the slider to being close to the gliding second elastic component of fixed block direction.

By adopting the technical scheme, when the fixed block deflects downwards, the transmission rod is driven to move together, the sliding block slides towards the direction close to the fixed block under the action of the elastic force of the second elastic piece, and the bearing plate is driven to deflect through the connecting rod, so that the discharge hole is opened; meanwhile, the bottom of the accepting plate and the sieve tray is connected, and food particles on the sieve tray are led into the material guide pipeline through the accepting plate.

Optionally, the setting can be dismantled on the installation piece to the screening dish, be provided with the fixed subassembly that is used for fixed screening dish on the installation piece, the installing port with the inside intercommunication of screening case is seted up to the lateral wall of screening case, the lateral wall of screening case articulates there is the sealed lid that is used for sealing the installing port, be provided with the mounting that is used for fixed sealed lid on the screening case.

Through adopting above-mentioned technical scheme, through loosening the mounting and opening the closing plate of installing port department, install the sieve tray on the installation piece through fixed subassembly, or dismantle from the installation piece to select the quantity of screening incasement sieve tray according to actual need, adjust the grade that food particulate matter sieved, and the size that the sieve tray can sieve food particulate matter increases the practicality.

Optionally, the fixing assembly includes a first clamping block, a second clamping block and a limiting part, the first clamping block is fixedly arranged on the mounting block, the second clamping block is slidably arranged on the mounting block along a direction close to or away from the first clamping block, one end of the first clamping block, which is close to the second clamping block, is fixedly provided with an insertion block, insertion slots for inserting the insertion blocks into the first clamping block and the second clamping block are respectively formed in two ends of the sieve tray, and the limiting part is used for preventing the second clamping block from sliding.

Through adopting above-mentioned technical scheme, place the sieve tray between first clamp splice and second clamp splice, make the inserted block on the first clamp splice insert one of them inserting groove of sieve tray, slide the second clamp splice and make the inserted block on the second clamp splice insert another inserting groove of sieve tray, carry on spacingly to the second clamp splice through the locating part to fix the sieve tray on the installation piece.

Optionally, the limiting part includes a limiting screw, the limiting screw is rotatably disposed on the mounting block, an axial direction of the limiting screw is parallel to a sliding direction of the second clamping block, a threaded hole is formed in the second clamping block along the axial direction of the limiting screw, and the limiting screw penetrates through the threaded hole and is in threaded connection with the second clamping block.

By adopting the technical scheme, the limiting screw is rotated, and the limiting screw is in threaded connection with the second clamping block, so that the second clamping block can be driven to axially slide along the limiting screw while the limiting screw rotates, and the second clamping block can be limited when the limiting screw stops rotating.

Optionally, each fixed block is fixedly provided with a motor, a cam is fixedly arranged on an output shaft of the motor, a contact block is fixedly arranged on the mounting block, and the cam is used for abutting against one end, far away from the fixed block, of the contact block and driving the contact block to slide towards the direction close to the fixed block.

Through adopting above-mentioned technical scheme, order about the cam through the motor and rotate, the cam rotates after the certain degree, with contact block contact, and order about contact block to being close to the motion of fixed block direction, break away from the back when cam and contact block, the installation piece slides to keeping away from the fixed block direction under the spring action of first elastic component, after the lateral wall that the spout diapire was kept away from to stopper and spacing groove supported tightly, the sieve tray receives inertia to influence and can produce certain vibration, thereby improves the screening effect to food particulate matter.

In a second aspect, the present application provides a screening process of a food screening machine, which adopts the following technical scheme:

a screening process of a food screening machine comprises the following steps:

s1, when food particles are screened, the food particles are poured into a screening box from a feed inlet of the screening box, the food particles with different sizes are screened through a plurality of screening trays respectively, and the screened food particles stay on the corresponding screening trays respectively according to the sizes of the volumes;

s2, driving the cam to rotate through the motor, driving the cam to contact with the contact block after rotating to a certain degree, driving the contact block to move towards the direction close to the fixed block, when the cam is separated from the contact block, the mounting block slides towards the direction far away from the fixed block under the action of the elastic force of the first elastic piece, and when the limiting block is abutted against the side wall of the limiting groove far away from the bottom wall of the sliding groove, the sieve tray is influenced by inertia to generate certain vibration;

s3, driving the worm to rotate through the driving source, driving the worm wheels to rotate simultaneously while the worm rotates, so as to drive the fixing blocks to rotate simultaneously, enabling the screening trays to deflect downwards simultaneously, driving the transmission rod to move together when the fixing blocks deflect downwards, enabling the sliding block to slide towards the direction close to the fixing blocks under the elastic action of the second elastic piece, and driving the bearing plate to deflect through the connecting rod, so as to open the discharge port;

s4, when the discharge gate was opened, accept the bottom of board and sieve tray and link up, the food particulate matter on the sieve tray is through accepting the leading-in passage way that corresponds of board, and the staff collects the food particulate matter that a plurality of passage ways were derived respectively, accomplishes the screening to food particulate matter.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the screened food particles stay on the corresponding sieve trays respectively according to the size, then a sealing piece at each discharge port on the screening box is opened, the plurality of sieve trays are driven to deflect downwards by the driving assembly, the food particles on each sieve tray enter the corresponding material guide pipeline respectively, a worker only needs to collect the food particles led out by the plurality of material guide pipelines respectively, and the labor intensity of the worker is low when the screened food is collected;

2. by loosening the fixing piece and opening the sealing plate at the mounting opening, the screen discs are mounted on the mounting block or dismounted from the mounting block through the fixing assembly, so that the number of the screen discs in the screening box is selected according to actual needs, the screening grade of food particles is adjusted, the size of the food particles which can be screened by the screen discs is adjusted, and the practicability is improved;

3. order about the cam through the motor and rotate, the cam rotates after the certain degree, with contact block contact to order about contact block to being close to the fixed block direction motion, after cam and contact block break away from, the installation piece slides to keeping away from the fixed block direction under the spring action of first elastic component, supports tight back when the lateral wall that spout diapire was kept away from to stopper and spacing groove, and the sieve tray receives inertia influence can produce certain vibration, thereby improves the screening effect to food particles.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a partial schematic structural diagram of an embodiment of the present application, which is mainly used for expressing the connection relationship between a mounting frame and a screen tray;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a partial structural schematic diagram of an embodiment of the present application, which is mainly used for expressing the structural schematic diagram of a sealing member.

Description of reference numerals: 1. a frame; 2. screening the box; 21. a material guide pipeline; 22. an installation port; 23. a sealing cover; 24. a fixing member; 25. a bearing plate; 251. a connecting rod; 3. a sieve tray; 31. inserting grooves; 4. a mounting frame; 41. a fixed block; 411. a chute; 412. mounting a block; 4121. a limiting block; 4122. connecting grooves; 4123. a contact block; 413. a limiting groove; 414. a first elastic member; 415. a motor; 4151. a cam; 416. a transmission rod; 4161. a slider; 4162. a second elastic member; 42. a material guide plate; 5. a drive assembly; 51. a worm gear; 52. a worm; 53. an electric motor; 6. a fixing assembly; 61. a first clamping block; 62. a second clamp block; 621. connecting blocks; 63. a limit screw; 64. and (5) inserting the blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a food sieve separator. Referring to fig. 1, including frame 1 and the fixed screening case 2 that sets up in frame 1, the feed inlet has been seted up to the roof of screening case 2, the blanking mouth has been seted up to the diapire of screening case 2, be provided with a plurality of sieve trays 3 from the bottom up in the screening case 2, a plurality of sieve trays 3 are used for filtering the not food particulate matter of equidimension respectively, and the size from the bottom up crescent of the filterable food particulate matter of sieve tray 3, a plurality of discharge gates have been seted up from the bottom up to the lateral wall of screening case 2, every discharge gate department all communicates there is a guide pipeline 21, guide pipeline 21 keeps away from the equal downward sloping in one side of screening case 2, every discharge gate department all is provided with the sealing member that is used for sealing the discharge gate.

Referring to fig. 1, the installing port 22 with the inside intercommunication of screening case 2 is seted up to the lateral wall of screening case 2, the lateral wall of screening case 2 articulates there is sealed lid 23 that is used for sealing installing port 22, sealed installing port 22 and sealed lid 23 looks adaptation, be provided with the mounting 24 that is used for fixed sealed lid 23 on the screening case 2, mounting 24 includes the bolt, sealed lid 23 is gone up and has been seted up first screw hole along the direction of perpendicular sealed lid 23, the second screw hole has been seted up to the lateral wall of screening case 2, first screw hole and second screw hole all with bolt looks adaptation, and when sealed lid 23 sealed mouthful 22, first screw hole is just right with the second screw hole.

Referring to fig. 1 and 2, screening case 2 internal fixation is provided with mounting bracket 4, and mounting bracket 4 is last to be provided with a plurality of fixed blocks 41 from the bottom up, and the interval between two adjacent fixed blocks 41 equals, and the length direction level of fixed block 41 sets up, and fixed block 41 rotates and sets up on mounting bracket 4, and the axis of rotation of fixed block 41 is parallel with the length direction of fixed block 41, is provided with on mounting bracket 4 to be used for ordering about a plurality of fixed blocks 41 pivoted drive assembly 5 simultaneously.

Referring to fig. 2, a material guide plate 42 is fixedly disposed on the mounting frame 4 and above each fixing block 41, and one end of the material guide plate 42, which is far away from the mounting frame 4, is inclined downward.

Referring to fig. 2 and 3, the driving assembly 5 includes a worm wheel 51, a worm 52 and a driving source, a worm wheel 51 is coaxially and fixedly disposed on a rotating shaft of each fixing block 41, the worm 52 is rotatably disposed on the mounting frame 4, the length direction of the worm 52 is vertical, the worm 52 is simultaneously engaged with the worm wheels 51, the driving source includes a motor 53, the motor 53 is fixedly disposed on the mounting frame 4, and an output shaft of the motor 53 is coaxially and fixedly connected with the worm 52.

Referring to fig. 3, the spout 411 has all been seted up along the length direction of perpendicular fixed block 41 to the roof of every fixed block 41, it is provided with installation piece 412 to slide in the spout 411, the fixed stopper 4121 that is provided with on the lateral wall of installation piece 412, spacing groove 413 has been seted up along the slip direction of installation piece 412 to the side of spout 411, stopper 4121 slides and sets up in sliding, be provided with on the fixed block 41 and be used for ordering about installation piece 412 to keeping away from the gliding first elastic component 414 of fixed block 41 direction, first elastic component 414 includes the pressure spring, the pressure spring sets up a plurality ofly, and a plurality of pressure springs all set up in spout 411, the one end of pressure spring and the diapire fixed connection of spout 411, the other end and the installation piece 412 fixed connection of pressure spring.

Referring to fig. 3, each mounting block 412 is provided with a fixing assembly 6 for fixing the sieve tray 3, the fixing assembly 6 includes a first clamping block 61, a second clamping block 62 and a limiting part, the first clamping block 61 is fixedly arranged on the mounting block 412, a connecting groove 4122 is formed in the vertical direction of the side wall of the mounting block 412, the second clamping block 62 is fixedly provided with a connecting block 621, the connecting block 621 is slidably arranged in the connecting groove 4122, the mutually close end of the first clamping block 61 and the second clamping block 62 is fixedly provided with an inserting block 64, and the two ends of the sieve tray 3 are provided with inserting grooves 31 for inserting the inserting block 64 into the first clamping block 61 and the second clamping block 62.

Referring to fig. 3, the limiting member includes a limiting screw 63, the limiting screw 63 is rotatably disposed on the mounting block 412, one end of the limiting screw 63 extends into the connecting groove 4122, an axial direction of the limiting screw 63 is parallel to a sliding direction of the second clamping block 62, a threaded hole is formed in the connecting block 621 along the axial direction of the limiting screw 63, and the limiting screw 63 penetrates through the threaded hole and is in threaded connection with the connecting block 621.

The sieve tray 3 is placed between the first clamping block 61 and the second clamping block 62, the inserting block 64 on the first clamping block 61 is inserted into one inserting groove 31 of the sieve tray 3, the limiting screw 63 is rotated, because the limiting screw 63 is in threaded connection with the connecting block 621, the limiting screw 63 is rotated and simultaneously drives the second clamping block 62 to slide, the inserting block 64 on the second clamping block 62 is inserted into the other inserting groove 31 of the sieve tray 3, when the first clamping block 61 and the second clamping block 62 are respectively abutted against two ends of the sieve tray 3, the rotation of the limiting screw 63 is stopped, the second clamping block 62 can be limited, and the sieve tray 3 is fixed on the mounting block 412.

Referring to fig. 3, each fixed block 41 is fixedly provided with a motor 415, an output shaft of the motor 415 is fixedly provided with a cam 4151, a side wall of the mounting block 412 is fixedly provided with a contact block 4123, and the cam 4151 is used for abutting against one end of the contact block 4123 far away from the fixed block 41 and driving the contact block 4123 to slide towards the direction close to the fixed block 41; the motor 415 drives the cam 4151 to rotate, the cam 4151 rotates to a certain degree and then contacts with the contact block 4123, the contact block 4123 is driven to move towards the direction close to the fixed block 41, when the cam 4151 is separated from the contact block 4123, the mounting block 412 slides towards the direction far away from the fixed block 41 under the elastic action of the pressure spring, and when the limiting block 4121 and the limiting groove 413 are abutted against the side wall far away from the bottom wall of the sliding groove 411, the sieve tray 3 can generate certain vibration under the influence of inertia, so that the sieving effect on food particles is improved.

Referring to fig. 2 and 4, the sealing member includes a bearing plate 25, the bearing plate 25 is hinged in the screening box 2, the hinged end of the bearing plate 25 and the screening box 2 is located at the lower opening wall of the discharge opening, the bearing plate 25 is matched with the discharge opening, a transmission rod 416 is fixedly arranged on each fixed block 41, a long groove is formed in the side wall of the transmission rod 416 along the length direction of the transmission rod 416, a sliding block 4161 is arranged in the long groove in a sliding manner, the cross section of the sliding block 4161 is T-shaped, the long groove is matched with the sliding block 4161, a connecting rod 251 is fixedly arranged on the bearing plate 25, the connecting rod 251 is hinged to the sliding block 4161, a second elastic member 4162 for driving the sliding block 4161 to slide towards the direction close to the fixed block 41 is arranged on the transmission rod 416, the second elastic member 4162 includes a tension spring, the tension spring is arranged in the long groove, one end of the tension spring is fixedly connected with the side wall of the long groove close to the fixed block 41, and the other end of the tension spring is fixedly connected with the sliding block 4161; when the fixed block 41 deflects downwards, the transmission rod 416 is driven to move together, the sliding block 4161 slides towards the direction close to the fixed block 41 under the action of the elastic force of the tension spring, and the connecting rod 251 drives the bearing plate 25 to deflect, so that the discharge hole is opened; meanwhile, the receiving plate 25 is engaged with the bottom of the sieve tray 3, and the food particles on the sieve tray 3 are guided into the guide pipeline 21 through the receiving plate 25.

The implementation principle of this application embodiment food sieve separator does: when food particles are screened, the food particles are poured into the screening box 2 from a feed inlet of the screening box 2, the food particles with different sizes are screened through the plurality of screening trays 3 respectively, and the screened food particles stay on the corresponding screening trays 3 according to the sizes of the food particles; then, the worm 52 is driven to rotate by the motor 53, and the worm 52 rotates and simultaneously drives the worm wheels 51 to rotate, so that the fixed blocks 41 are driven to simultaneously rotate, and the plurality of sieve trays 3 are simultaneously deflected downward.

Fixed block 41 is when deflecting downwards, drive transfer line 416 and move together, slider 4161 slides to being close to fixed block 41 direction under the spring action of extension spring, drive through connecting rod 251 and accept board 25 and deflect, thereby make the discharge gate open, when the discharge gate is opened, accept board 25 and sieve tray 3's bottom and link up, food particulate matter on the sieve tray 3 is through accepting in the leading-in corresponding guide pipeline 21 of board 25, the staff only need to collect respectively the food particulate matter of a plurality of guide pipeline 21 derives can, when collecting the food after accomplishing the screening, staff's low in labor strength.

The embodiment of the application also discloses a screening process of the food screening machine, which comprises the following steps:

s1, when food particles are screened, the food particles are poured into a screening box 2 from a feed inlet of the screening box 2, the food particles with different sizes are screened through a plurality of screening trays 3 respectively, and the screened food particles stay on the corresponding screening trays 3 respectively according to the sizes of the volumes;

s2, the cam 4151 is driven to rotate through the motor 415, the cam 4151 rotates to a certain degree and then contacts the contact block 4123, the contact block 4123 is driven to move towards the direction close to the fixed block 41, when the cam 4151 is separated from the contact block 4123, the mounting block 412 slides towards the direction far away from the fixed block 41 under the action of the elastic force of the pressure spring, and when the limiting block 4121 is tightly abutted against the side wall of the limiting groove 413 far away from the bottom wall of the sliding groove 411, the sieve tray 3 is influenced by inertia to enable the sieve tray 3 to vibrate to a certain degree;

s3, driving the worm 52 to rotate through the motor 53, driving the worm gears 51 to rotate simultaneously while the worm 52 rotates, so as to drive the fixing blocks 41 to rotate simultaneously, enabling the sieve trays 3 to deflect downwards simultaneously, driving the transmission rod 416 to move together when the fixing blocks 41 deflect downwards, sliding the sliding block 4161 to slide towards the direction close to the fixing blocks 41 under the action of the elastic force of the tension spring, and driving the bearing plate 25 to deflect through the connecting rod 251, so as to open the discharge hole;

s4, when the discharge gate is opened, accept the bottom of board 25 and sieve tray 3 and link up, the food particulate matter on the sieve tray 3 is through accepting in the leading-in corresponding guide pipeline 21 of board 25, and the staff collects the food particulate matter that a plurality of guide pipelines 21 derived respectively, accomplishes the screening to food particulate matter.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A food screening machine which characterized in that: the screening box comprises a rack (1) and a screening box (2) fixedly arranged on the rack (1), wherein a feed inlet is formed in the top wall of the screening box (2), a blanking port is formed in the bottom wall of the screening box (2), a mounting frame (4) is fixedly arranged in the screening box (2), a plurality of screening discs (3) are arranged on the mounting frame (4) from bottom to top, the plurality of screening discs (3) are respectively used for filtering food particles with different sizes, and the sizes of the food particles which can be filtered by the screening discs (3) are gradually increased from bottom to top;

sieve dish (3) are rotated and are set up on mounting bracket (4), be provided with drive assembly (5) that are used for ordering about a plurality of sieve dishes (3) and deflect downwards simultaneously on mounting bracket (4), a plurality of discharge gates have been seted up from the bottom up to the lateral wall of screening case (2), every discharge gate department communicates respectively has a guide pipeline (21), and every discharge gate corresponds sieve dish (3) respectively, every discharge gate department all is provided with the sealing member that is used for sealing the discharge gate.

2. The food screening machine of claim 1, wherein: be provided with a plurality of fixed blocks (41), every from the bottom up on mounting bracket (4) spout (411) have all been seted up on the roof of fixed block (41), it is provided with installation piece (412) to slide in spout (411), the fixed stopper (4121) that is provided with on the lateral wall of installation piece (412), spacing groove (413) have been seted up along the slip direction of installation piece (412) to the side of spout (411), stopper (4121) slide and set up in the slip, be provided with on fixed block (41) and be used for ordering about installation piece (412) to keeping away from the gliding first elastic component (414) of fixed block (41) direction, every all fixed being provided with one on installation piece (412) sieve tray (3), drive assembly (5) are used for ordering about fixed block (41) and rotate.

3. The food screening machine of claim 2, wherein: drive assembly (5) include worm wheel (51), worm (52) and driving source, every equal coaxial fixation is provided with in the axis of rotation of fixed block (41) worm wheel (51), worm (52) rotate and set up on mounting bracket (4), just worm (52) and a plurality of worm wheel (51) meshing, the driving source is used for driving worm (52) and rotates.

4. The food screening machine of claim 2, wherein: the sealing member is including accepting board (25), accept board (25) and articulate in screening case (2), just accept board (25) and discharge gate looks adaptation, every fixed block (41) are gone up to fix and are provided with transfer line (416), transfer line (416) are gone up and are all slided along the length direction of transfer line (416) and are provided with slider (4161), it is provided with connecting rod (251) to accept the fixed on board (25), connecting rod (251) are articulated with slider (4161), be provided with on transfer line (416) and be used for driving slider (4161) to being close to the gliding second elastic component (4162) of fixed block (41) direction.

5. The food screening machine of claim 2, wherein: the sieve tray (3) can be dismantled and set up on installation piece (412), be provided with fixed subassembly (6) that are used for fixed sieve tray (3) on installation piece (412), installing port (22) with the inside intercommunication of sieve case (2) are seted up to the lateral wall of sieve case (2), the lateral wall of sieve case (2) articulates there is sealed lid (23) that are used for sealing installing port (22), be provided with mounting (24) that are used for fixed sealed lid (23) on sieve case (2).

6. The food screening machine of claim 5, wherein: the fixing assembly (6) comprises a first clamping block (61), a second clamping block (62) and a limiting piece, the first clamping block (61) is fixedly arranged on the mounting block (412), the second clamping block (62) is arranged on the mounting block (412) in a sliding mode along the direction close to or far away from the first clamping block (61), the end, close to each other, of the first clamping block (61) and the second clamping block (62) is fixedly provided with an inserting block (64), the two ends of the sieve tray (3) are provided with inserting grooves (31) used for allowing the inserting block (64) to be inserted into the first clamping block (61) and the second clamping block (62), and the limiting piece is used for preventing the second clamping block (62) from sliding.

7. The food screening machine of claim 6, wherein: the locating part includes stop screw (63), stop screw (63) rotate to set up on installation piece (412), just the axial of stop screw (63) is parallel with the slip direction of second clamp splice (62), along stop screw (63) axial set up screw hole on second clamp splice (62), stop screw (63) wear to locate the screw hole and with second clamp splice (62) threaded connection.

8. The food screening machine of claim 2, wherein: each fixed block (41) is fixedly provided with a motor (415), an output shaft of each motor (415) is fixedly provided with a cam (4151), the mounting block (412) is fixedly provided with a contact block (4123), and the cam (4151) is used for abutting against one end, far away from the fixed block (41), of the contact block (4123) and driving the contact block (4123) to slide towards the direction close to the fixed block (41).

9. The screening process of a food screening machine according to any one of claims 1 to 8, comprising the steps of:

s1, when food particles are screened, the food particles are poured into a screening box (2) from a feed inlet of the screening box (2), the food particles with different sizes are screened through a plurality of screening trays (3), and the screened food particles stay on the corresponding screening trays (3) according to the sizes of the volumes;

s2, the cam (4151) is driven to rotate through the motor (415), the cam (4151) is driven to rotate to a certain degree and then is in contact with the contact block (4123), the contact block (4123) is driven to move towards the direction close to the fixed block (41), when the cam (4151) is separated from the contact block (4123), the mounting block (412) slides towards the direction far away from the fixed block (41) under the elastic action of the first elastic piece (414), and when the limiting block (4121) and the limiting groove (413) are tightly abutted against the side wall far away from the bottom wall of the sliding groove (411), the sieve tray (3) is influenced by inertia to enable the sieve tray (3) to generate certain vibration;

s3, driving the worm (52) to rotate through the driving source, driving the worm (52) to rotate simultaneously, driving the worm wheels (51) to rotate simultaneously so as to drive the fixing blocks (41) to rotate simultaneously, enabling the sieve trays (3) to deflect downwards simultaneously, driving the transmission rod (416) to move together when the fixing blocks (41) deflect downwards, sliding the sliding block (4161) towards the direction close to the fixing block (41) under the elastic action of the second elastic piece (4162), and driving the bearing plate (25) to deflect through the connecting rod (251) so as to open the discharge hole;

s4, when the discharge gate is opened, accept board (25) and link up with the bottom of sieve dish (3), the food particulate matter on the sieve dish (3) is through accepting board (25) in leading-in corresponding passage way (21), and the staff collects the food particulate matter that a plurality of passage ways (21) were derived respectively, accomplishes the screening to food particulate matter.