CN117244776A

CN117244776A - A kind of food processing screening equipment

Info

Publication number: CN117244776A
Application number: CN202311355926.8A
Authority: CN
Inventors: 李沛真; 潘风光
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2023-10-19
Filing date: 2023-10-19
Publication date: 2023-12-19

Abstract

The invention discloses food processing screening equipment which comprises a conveying seat, a screening box and a feeding box, wherein a connecting groove is arranged in the screening box, a rotating block is arranged in the connecting groove, the rotating block is connected with the screening frame, a second motor is arranged on one side surface of the screening box, a screw is connected with the second motor, a moving block is arranged on the screw Zhou Cemian, a jumping rod is connected with the moving block, a conveying belt, a first driving roller and a second driving roller are arranged in the conveying seat, and a first motor is arranged on the front surface of the conveying seat. According to the invention, the screening frame, the screw rod, the moving block and the jumping bar are arranged, after food raw materials are screened in the screening box, the raw materials are screened by the screening box, the second motor drives the screw rod to rotate, when the screw rod rotates, the moving block can move left and right, and in the moving process, the moving block can push the screening frame to swing up and down through the jumping bar, so that the screening efficiency of equipment can be accelerated, and meanwhile, particles remained in a mesh can be also swayed out, and the screening frame is prevented from being blocked.

Description

Food processing screening equipment

Technical Field

The invention belongs to the field of food processing, and particularly relates to food processing screening equipment.

Background

Food processing refers to cereal milling, feed processing, vegetable oil and sugar processing, slaughtering, meat processing, aquatic product processing, and processing activities of foods such as vegetables, fruits and nuts, and processing of potatoes, dehydrated vegetables and canned vegetables, which are directly carried out by taking agricultural, forestry, pasturing and fishery products as raw materials, and is one type of broad agricultural product processing industry. Food processing is the process of passing what is eaten through certain procedures, resulting in a change of better eating or more beneficial. The raw grain or other raw materials are subjected to artificial treatment to form a new form of directly edible product, and the process is food processing. For example, wheat is used for grinding, screening, charging, stirring, forming and drying, and the biscuit is made, which belongs to the process of food processing, and the food processing is a professional technology. The agricultural and sideline food processing industry refers to cereal grinding, feed processing, vegetable oil and sugar processing, slaughter and meat processing, aquatic product processing, and processing activities of foods such as vegetables, fruits and nuts, which are directly carried out by taking agricultural, forestry, pasturing and fishery products as raw materials, and is one type of broad agricultural product processing industry. The agricultural and sideline food processing industry in China has faster development and has happy change, and the agricultural and sideline food processing industry has stronger development potential.

In the process of processing food, a large amount of food raw materials are generally piled up and processed, in order to conveniently classify the food or process different kinds of food, the type of the food needs to be screened by using screening equipment, the condition that smaller particles are clamped in a screen is easy to occur when the existing screening equipment screens different kinds of raw materials, so that more and more raw material particles are reserved on the screen, the trafficability of the raw material particles is poorer and worse, and finally, the screen cannot pass through the raw material particles even because of piling up and blocking of jade raw material particles and residues with larger volume is generated, so that the food processing screening equipment is provided.

Disclosure of Invention

The invention aims to provide a food processing screening device, which solves the problems that a large amount of food raw materials are piled up and processed in the processing process of food, the type of the food is required to be screened by the screening device in order to conveniently classify the food or process different kinds of food, smaller particles are easy to be blocked in a screen when different kinds of raw materials are screened by the existing screening device, so that more and more raw material particles remain on the screen, the trafficability of the raw material particles is poorer and worse, and finally the screen cannot pass through the raw material particles even due to accumulation and blockage of the jade raw material particles and residues with larger volume.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to food processing screening equipment, which comprises a conveying seat, a screening box and a feeding box, wherein connecting grooves are fixedly formed in two side surfaces of the inner wall of the screening box, rotating blocks are arranged in the connecting grooves, a screening frame is fixedly connected between the two rotating blocks, a second motor is fixedly arranged on one side surface of the screening box, a screw is fixedly connected with the output end of the second motor, a moving block is arranged on the Zhou Cemian of the screw, a jumping rod is connected to the upper surface of the moving block, the upper end of the jumping rod is connected with the screening frame, a conveying belt, a first driving roller and a second driving roller are arranged in the conveying seat, a first motor is fixedly connected with the front surface of the conveying seat, a conveying belt, the screening frame, the moving block and the jumping rod are arranged on the conveying belt, food raw materials can be automatically conveyed to the conveying belt, the food raw materials can be conveniently conveyed to the screening box, and can be simultaneously moved to the screening frame through the moving frame after the moving, the moving frame can be prevented from shaking, and particles can be simultaneously screened in the screening box through the moving frame when the moving frame.

The front surface of transport seat has seted up fluting, the notch has been seted up to the top surface of fluting inner wall, fixed mounting has the swivel nut in the notch, install the lead screw in the swivel nut, the bottom of lead screw is connected with the adapter sleeve, the bottom surface fixedly connected with slider of adapter sleeve, a surface mounting of slider has the bull stick, the one end fixedly connected with take-up pulley of bull stick, the bottom surface fixed mounting of transport seat has a plurality of support columns, take-up pulley and conveyer belt friction fit, bull stick and slider sliding fit set up lead screw, slider and take-up pulley, when the conveyer belt takes place not hard up, forward rotation lead screw, the lead screw promotes the slider down and removes, and the slider promotes the take-up pulley through the bull stick and slides down for the take-up pulley promotes the conveyer belt down, can tighten the conveyer belt, and can rotate along with the bull stick in the conveyer belt working process, can not hinder the work of conveyer belt.

The upper surface fixedly connected with a plurality of bracing pieces of transport seat, the upper end and the batch charging box fixed connection of bracing piece, the inside fixed mounting of batch charging box has the screen cloth, the discharge gate has been seted up to the bottom surface of batch charging box, the equal fixed mounting of both sides face of batch charging box inner wall has the second baffle, the position of second baffle suits with the position of discharge gate, sets up screen cloth and second baffle, when handling food raw materials, firstly drops into the batch charging box with the raw materials in, can carry out first screening to the raw materials through the screen cloth, improves the screening quality of equipment to the raw materials after the screening can be accurate to fall on the conveyer belt through the second baffle and convey the completion second screening.

The bottom surface fixed mounting who sieves the case has a plurality of erection columns, install the lifter in the erection column, the bottom fixedly connected with supporting pad of lifter, the spout has been seted up to a surface of erection column, install the slide bar in the spout, the one end and the lifter fixed connection of slide bar, the nut is installed to the week side-mounting of slide bar, slide bar and spout sliding fit, lifter and erection column sliding fit, slide bar and nut screw-thread fit set up lifter, slide bar and nut, and the pulling slide bar, the slide bar can drive the lifter and go up and down, and the convenience is according to the altitude mixture control of delivery seat sieves of the screening case, is applicable to the screening of different types of food, and the altitude mixture control after accomplishing, the high fixation to the lifter can be accomplished to the nut tightening.

The inside fixed mounting of delivery seat has first baffle, the position phase-match of first baffle and screening case sets up the position phase-match of first baffle and screening case, conveniently carries the accurate screening incasement with food raw materials.

Wherein, screening case's inside fixed mounting has the baffle, the upper surface of baffle has seted up the separating wall, the size of jumping the pole suits with the size of separating wall, screening case's front surface articulates there is the chamber door, sets up chamber door and baffle, after sieving food, the baffle can separate food and screw rod, avoids its work to the screw rod to cause the influence.

The screw rod is in running fit with the connecting sleeve, the screw rod is in threaded fit with the threaded sleeve, a self-locking function exists between the screw rod and the threaded sleeve, and after the conveying belt is tensioned, the tensioning wheel cannot move at will.

The screening box comprises a screening box body, a movable block, a connecting groove, a screening frame, a moving block, a connecting groove, a screening frame and a connecting groove, wherein the screw is in running fit with the screening box, the moving block is in threaded fit with the screw, the moving block is in running fit with the connecting groove, the moving block and the screening frame are all hinged to the jumping rod, the moving block is in running fit with the connecting groove, and the screening frame can conveniently shake left and right.

The screening box comprises a screening box body, wherein a limiting groove is formed in the bottom surface of the inner wall of the screening box body, a limiting block is slidably connected in the limiting groove, the limiting block is fixedly connected with a moving block, the limiting block and the limiting groove are arranged, the moving block can be limited, and the moving block is prevented from rotating along with a screw rod.

Wherein, first driving roller and second driving roller all with conveying seat normal running fit, and first driving roller and second driving roller all with the conveyer belt friction fit, set up first driving roller and second driving roller all with the conveyer belt friction fit, make things convenient for the conveyer belt to carry out the worker.

The invention has the following beneficial effects:

1. according to the invention, the food raw materials are placed on the conveyor belt through the conveyor belt, the screw, the moving block and the jumping bar are arranged, so that the food raw materials can be automatically transported, the food raw materials can be conveniently transported into the screening box, after the food raw materials are screened in the screening box, the raw materials are screened through meshes of the screening box, the second motor drives the screw to rotate, when the screw rotates, the moving block can move left and right, and in the moving process, the moving block can push the screening frame to swing up and down through the jumping bar, so that the screening efficiency of equipment can be improved, and meanwhile, particles remained in the meshes can be swayed out, and the blocking of the screening frame is avoided;

2. according to the invention, the screw rod, the sliding block and the tensioning wheel are arranged, when the conveyor belt loosens, the screw rod is rotated forward, the sliding block is pushed to move downwards by the screw rod, the sliding block pushes the tensioning wheel to slide downwards by the rotating rod, so that the conveyor belt is pushed downwards by the tensioning wheel, the conveyor belt can be tensioned, and the tensioning wheel can rotate along with the rotating rod in the working process of the conveyor belt, so that the working of the conveyor belt is not hindered;

3. according to the invention, the screen and the second guide plate are arranged, when food raw materials are processed, the raw materials are firstly put into the feeding box, the raw materials can be screened for the first time through the screen, the screening quality of equipment is improved, and the screened raw materials can accurately fall on the conveying belt through the second guide plate to be conveyed to finish the second screening;

4. according to the invention, the lifting rod, the sliding rod and the screw cap are arranged, the sliding rod is pulled, the lifting rod can be driven to lift by the sliding rod, the height of the screening box is conveniently adjusted according to the height of the conveying seat, the screening box is suitable for screening different kinds of foods, and the height fixing of the lifting rod can be completed by screwing the screw cap after the height adjustment is completed.

Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a food processing screening apparatus;

FIG. 2 is a schematic view of a front left side perspective of a food processing screen apparatus;

FIG. 3 is a schematic bottom perspective view of a food processing screen apparatus;

FIG. 4 is a schematic diagram of a front view of a food processing screen apparatus;

FIG. 5 is a schematic diagram of a right-side view of a food processing screen apparatus;

FIG. 6 is a schematic diagram of a left-hand construction of a food processing screen apparatus;

FIG. 7 is a schematic view of the cross-sectional structure A-A of FIG. 5;

FIG. 8 is a schematic view of the cross-sectional B-B structure of FIG. 6;

FIG. 9 is a schematic view of a partial enlarged structure at A in FIG. 7;

fig. 10 is a partially enlarged schematic structural view of fig. 8 at B.

In the drawings, the list of components represented by the various numbers is as follows: 1. a conveying seat; 2. a screening box; 3. a charging box; 4. a connecting groove; 5. a rotating block; 6. a screening frame; 7. a first guide plate; 8. a door; 9. a mounting column; 10. a lifting rod; 11. a chute; 12. a slide bar; 13. a screw cap; 14. a screen; 15. a first motor; 16. a conveyor belt; 17. a support column; 18. a support rod; 19. a second motor; 20. slotting; 21. a screw sleeve; 22. a screw rod; 23. connecting sleeves; 24. a slide block; 25. a first driving roller; 26. a second driving roller; 27. a screw; 28. a partition plate; 29. a partition groove; 30. a second guide plate; 31. a discharge port; 32. a tensioning wheel; 33. a moving block; 34. a jumping bar; 35. a limit groove; 36. a limiting block; 37. and (5) rotating the rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-10, the invention is a food processing screening device, comprising a conveying seat 1, a screening box 2 and a feeding box 3, wherein, a connecting groove 4 is fixedly arranged on both sides of the inner wall of the screening box 2, a rotating block 5 is arranged in the connecting groove 4, a screening frame 6 is fixedly connected between the two rotating blocks 5, a second motor 19 is fixedly arranged on one side of the screening box 2, the output end of the second motor 19 is fixedly connected with a screw 27, a moving block 33 is arranged on Zhou Cemian of the screw 27, a jumping bar 34 is connected on the upper surface of the moving block 33, the upper end of the jumping bar 34 is connected with the screening frame 6, a conveyor belt 16, a first driving roller 25 and a second driving roller 26 are arranged in the conveying seat 1, the first driving roller 25 and the second driving roller 26 are arranged in the conveyor belt 16, a first motor 15 is fixedly arranged on the front surface of the conveying seat 1, the output of first motor 15 and first driving roller 25 fixed connection set up conveyer belt 16, screening frame 6, screw rod 27, movable block 33 and trip lever 34, place food raw materials on conveyer belt 16, can transport food automatically, conveniently carry food raw materials to screening case 2 in, after food raw materials carries out screening case 2, screen through the mesh of screening case 2, second motor 19 drives screw rod 27 and rotates, when screw rod 27 rotated, movable block 33 can be controlled and remove, movable block 33 can promote screening frame 6 through trip lever 34 in the in-process of removal, can also shake out the granule that remains in the mesh when can accelerating equipment screening efficiency, avoid screening frame 6 to take place to block up.

The front surface of the conveying seat 1 is provided with a slot 20, the top surface of the inner wall of the slot 20 is provided with a slot, a threaded sleeve 21 is fixedly arranged in the slot, a screw rod 22 is arranged in the threaded sleeve 21, the bottom end of the screw rod 22 is connected with a connecting sleeve 23, the bottom surface of the connecting sleeve 23 is fixedly connected with a sliding block 24, one surface of the sliding block 24 is provided with a rotating rod 37, one end of the rotating rod 37 is fixedly connected with a tensioning wheel 32, the bottom surface of the conveying seat 1 is fixedly provided with a plurality of support columns 17, the tensioning wheel 32 is in friction fit with the conveying belt 16, the rotating rod 37 is in sliding fit with the sliding block 24, the screw rod 22, the sliding block 24 and the tensioning wheel 32 are arranged, when the conveying belt 16 loosens, the screw rod 22 is positively rotated, the screw rod 22 pushes the sliding block 24 to move, the sliding block 24 pushes the tensioning wheel 32 to slide downwards through the rotating rod 37, the tensioning wheel 32 pushes the conveying belt 16 downwards, the tensioning wheel 32 can be tensioned, the tensioning wheel 32 can rotate along with the rotating rod 37 in the working process of the conveying belt 16, and the working process of the conveying belt 16 cannot be hindered.

Wherein, the upper surface fixedly connected with a plurality of bracing pieces 18 of delivery seat 1, the upper end and the throwing material case 3 fixed connection of bracing piece 18, the inside fixed mounting of throwing material case 3 has screen cloth 14, the discharge gate 31 has been seted up to the bottom surface of throwing material case 3, the both sides face of throwing material case 3 inner wall all fixed mounting has second baffle 30, the position of second baffle 30 suits with the position of discharge gate 31, set up screen cloth 14 and second baffle 30, when handling food raw materials, firstly throw into throwing material case 3 in, can carry out first screening to the raw materials through screen cloth 14, improve the screening quality of equipment, and the raw materials after the screening can be accurate to fall on conveyer belt 16 through second baffle 30 and convey the completion second screening.

Wherein, the bottom surface fixed mounting of screening case 2 has a plurality of erection columns 9, install lifter 10 in the erection column 9, lifter 10's bottom fixedly connected with supporting pad, spout 11 has been seted up to one surface of erection column 9, install slide bar 12 in the spout 11, slide bar 12's one end and lifter 10 fixed connection, nut 13 is installed to Zhou Cemian of slide bar 12, slide bar 12 and spout 11 sliding fit, lifter 10 and erection column 9 sliding fit, slide bar 12 and nut 13 screw-thread fit, set up lifter 10, slide bar 12 and nut 13, pulling slide bar 12, slide bar 12 can drive lifter 10 and go up and down, the height of screening case 2 is adjusted according to the height of delivery seat 1 to the convenience, be applicable to the screening of different types of food, after the altitude mixture control is accomplished, screw cap tightening can accomplish the altitude mixture control to lifter 10.

Wherein, the inside fixed mounting of delivery seat 1 has first baffle 7, and the position phase-match of first baffle 7 and screening case 2 sets up the position phase-match of first baffle 7 and screening case 2, conveniently carries the accurate transportation of food raw materials to screening case 2 in.

Wherein, screening case 2's inside fixed mounting has baffle 28, and baffle 28's upper surface has seted up separating groove 29, and the size of jumping pole 34 suits with separating groove 29's size, and screening case 2's front surface articulates there is chamber door 8, sets up chamber door 8 and baffle 28, after sieving food, the baffle can separate food and screw rod 27, avoids its work to screw rod 27 to cause the influence.

The screw rod 22 is in running fit with the connecting sleeve 23, the screw rod 22 is in threaded fit with the threaded sleeve 21, a self-locking function exists between the screw rod 22 and the threaded sleeve 21, and the tensioning wheel 32 cannot move at will after the conveying belt 16 is tensioned.

Wherein, screw rod 27 and screening case 2 normal running fit, movable block 33 and screw rod 27 screw fit, and movable block 5 and spread groove 4 normal running fit, movable block 33 and screening frame 6 all articulate with jumping bar 34, set up movable block 5 and spread groove 4 normal running fit, make things convenient for screening frame 6 to rock about.

Wherein, the spacing groove 35 has been seted up to the bottom surface of the inner wall of screening case 2, and sliding connection has stopper 36 in spacing groove 35, stopper 36 and movable block 33 fixed connection set up stopper 36 and spacing groove 35, can carry out spacingly to movable block 33, avoid movable block 33 to follow screw rod 27 and rotate.

Wherein, first driving roller 25 and second driving roller 26 all with conveying seat 1 normal running fit, and first driving roller 25 and second driving roller 26 all with conveyer belt 16 friction fit, set up first driving roller 25 and second driving roller 26 all with conveyer belt 16 friction fit, make things convenient for conveyer belt 16 to carry out the worker.

A method of using a food processing sifting apparatus as described in fig. 1-10 is as follows:

embodiment one: firstly, the sliding rod 12 is pulled, the sliding rod 12 can drive the lifting rod 10 to lift, the height of the screening box 2 can be conveniently adjusted according to the height of the conveying seat 1, the screening box is suitable for screening different kinds of foods, after the height adjustment is finished, the height of the lifting rod 10 can be fixed by screwing a nut, then raw materials are put into the feeding box 3, the raw materials can be screened for the first time through the screen 14, the screening quality of equipment is improved, the screened raw materials can accurately fall on the conveying belt 16 through the second guide plate 30, and the conveying belt 16 accurately conveys the raw materials into the screening box 2 through the first guide plate 7;

embodiment two: food raw materials are placed on the conveyor belt 16, so that the food raw materials can be automatically transported, the food raw materials are conveniently conveyed into the screening box 2, after the food raw materials are screened in the screening box 2, the raw materials are screened through meshes of the screening box 2, the second motor 19 drives the screw 27 to rotate, when the screw 27 rotates, the moving block 33 can move left and right, the moving block 33 can push the screening frame 6 to shake up and down through the jumping bar 34 in the moving process, the screening efficiency of equipment can be accelerated, and meanwhile, particles remained in the meshes can be also shaken out, so that the screening frame 6 is prevented from being blocked;

embodiment III: when the conveyor belt 16 loosens, the screw rod 22 is rotated in the forward direction, the screw rod 22 pushes the sliding block 24 downwards to move, the sliding block 24 pushes the tensioning wheel 32 to slide downwards through the rotating rod 37, so that the tensioning wheel 32 pushes the conveyor belt 16 downwards, the conveyor belt 16 can be tensioned, the tensioning wheel 32 can rotate along with the rotating rod 37 in the working process of the conveyor belt 16, and the working of the conveyor belt 16 is not hindered;

it should be noted that, in the above system embodiment, each component included is only divided according to the functional logic, but not limited to the above division, so long as the corresponding function can be implemented; in addition, the specific names of the functional components are only for distinguishing from each other, and are not used to limit the protection scope of the present invention.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. Food processing sieve material equipment, including delivery seat (1), screening case (2) and throw bin (3), its characterized in that: the utility model discloses a screening box, including screening box (2), filter box, conveyer seat (1), filter box (2), filter box (4) are all fixed mounting on the both sides face of inner wall, install rotating block (5) in connecting groove (4), two fixedly connected with filter box (6) between rotating block (5), a side fixed mounting of screening box (2) has second motor (19), the output fixedly connected with screw rod (27) of second motor (19), movable block (33) are installed to Zhou Cemian of screw rod (27), the upper surface of movable block (33) is connected with jumping bar (34), the upper end of jumping bar (34) is connected with filter box (6), internally mounted of conveyer seat (1) has conveyer belt (16), first driving roller (25) and second driving roller (26), the inside at conveyer belt (16) is installed to first driving roller (25) and second driving roller (26), the preceding surface fixedly mounted of conveyer seat (1) has first motor (15), the output of first motor (15) is connected with first driving roller (25).

2. The food processing screening device according to claim 1, characterized in that a groove (20) is formed in the front surface of the conveying seat (1), a notch is formed in the top surface of the inner wall of the groove (20), a screw sleeve (21) is fixedly installed in the notch, a screw rod (22) is installed in the screw sleeve (21), a connecting sleeve (23) is connected to the bottom end of the screw rod (22), a sliding block (24) is fixedly connected to the bottom surface of the connecting sleeve (23), a rotating rod (37) is installed on one surface of the sliding block (24), a tensioning wheel (32) is fixedly connected to one end of the rotating rod (37), a plurality of supporting columns (17) are fixedly installed on the bottom surface of the conveying seat (1), the tensioning wheel (32) is in friction fit with the conveying belt (16), and the rotating rod (37) is in sliding fit with the sliding block (24).

3. The food processing screening device according to claim 1, wherein the upper surface of the conveying seat (1) is fixedly connected with a plurality of supporting rods (18), the upper ends of the supporting rods (18) are fixedly connected with a feeding box (3), a screen (14) is fixedly installed in the feeding box (3), a discharging hole (31) is formed in the bottom surface of the feeding box (3), second guide plates (30) are fixedly installed on two side surfaces of the inner wall of the feeding box (3), and the positions of the second guide plates (30) are matched with the positions of the discharging hole (31).

4. The food processing screening device according to claim 1, wherein a plurality of mounting posts (9) are fixedly mounted on the bottom surface of the screening box (2), lifting rods (10) are mounted in the mounting posts (9), supporting pads are fixedly connected to the bottom ends of the lifting rods (10), sliding grooves (11) are formed in one surfaces of the mounting posts (9), sliding rods (12) are mounted in the sliding grooves (11), one ends of the sliding rods (12) are fixedly connected with the lifting rods (10), nuts (13) are mounted on Zhou Cemian of the sliding rods (12), the sliding rods (12) are in sliding fit with the sliding grooves (11), the lifting rods (10) are in sliding fit with the mounting posts (9), and the sliding rods (12) are in threaded fit with the nuts (13).

5. Food processing screening apparatus according to claim 1, characterized in that the interior of the conveying seat (1) is fixedly provided with a first guide plate (7), the position of the first guide plate (7) being matched with the position of the screening box (2).

6. Food processing screening apparatus according to claim 1, characterized in that the screening box (2) is internally and fixedly provided with a partition plate (28), the upper surface of the partition plate (28) is provided with a partition groove (29), the size of the jumping bar (34) is adapted to the size of the partition groove (29), and the front surface of the screening box (2) is hinged with a box door (8).

7. A food processing screening apparatus according to claim 2, characterized in that the screw (22) is in a running fit with the connecting sleeve (23), the screw (22) being in a threaded fit with the screw sleeve (21).

8. Food processing screening apparatus according to claim 1, characterized in that the screw (27) is in a running fit with the screening box (2), the moving block (33) is in a threaded fit with the screw (27), the rotating block (5) is in a running fit with the connecting slot (4), and both the moving block (33) and the screening frame (6) are hinged with the jumping bar (34).

9. Food processing screening apparatus according to claim 1, characterized in that a limit groove (35) is provided on the bottom surface of the inner wall of the screening box (2), a limit block (36) is slidably connected in the limit groove (35), and the limit block (36) is fixedly connected with the moving block (33).

10. A food processing screening apparatus according to claim 1, characterized in that the first (25) and second (26) drive rollers are both in a running fit with the conveyor base (1) and that the first (25) and second (26) drive rollers are both in a friction fit with the conveyor belt (16).