Material sieving device

Abstract

The utility model discloses a material screening device which comprises a vibrating screen, and the vibrating screen comprises an upper screen frame and a lower material collecting bin. A sieving structure and a vibrating structure are fixedly assembled and connected to the upper sieve frame; the device further comprises a material pre-crushing treatment mechanism. The material crushing device comprises a long material barrel, a material crushing assembly is rotationally connected into the long material barrel, the material crushing assembly comprises a long material crushing shaft rotationally connected into the long material barrel, rotating supporting rings are fixedly assembled and connected to the long material crushing shaft, and a plurality of long material crushing plates are fixedly assembled and connected between the rotating supporting rings; a plurality of abutting rolling structures are fixedly assembled and connected to the outer side wall of the rotary supporting ring. According to the device, in the food detection process, materials do not need to be sieved immediately after being crushed, the treatment time of the material food after unpacking is shortened, and the defects of easy oxidation and pollution are avoided. And meanwhile, the crushing structure is improved, the material crushing effect is achieved, meanwhile, the materials are rapidly crushed and treated, and the time for exposing the materials in air in the material pretreatment process is further shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to material sieving technical field especially relates to a material sieving device. BACKGROUND

[0002] In the food detection process, in order to prepare detection sample, need to pretreat food. For solid food pretreatment package, the food is crushed, and the crushed food is detected, such as microbiological detection, nutrient substance, toxic and harmful substance detection.

[0003] Because of the food detection process, the category of detection is more, therefore, the sample amount of food has certain requirement. In the process of sample preparation, material is crushed (such as puffed food etc.), and the sieving material that meets the detection standard is obtained after crushing. At present, the more conventional processing mode is: food is crushed in advance, and the crushed food is sieved on the sieving equipment. However, for part detection, the requirement of food processing is higher, such as microbiological detection. Food needs to reduce air contact as far as possible, and reduce the conveying path of material. Specifically, because of the separate processing mode currently adopted, the conveying path of material is too large when the material is crushed, discharged and fed to the sieving equipment, which leads to easy pollution of material in the material transfer process.

[0004] Secondly, because the material is crushed, especially the food (mostly vacuum packaged food) that is easy to oxidize, if not sieved in time, long-time exposure to air can easily cause sample food to deteriorate, thereby affecting the detection structure.

[0005] Therefore, in order to meet the detection requirement, how to realize the rapid crushing and sieving of sample material, reduce the conveying path of material, reduce the exposure time of air and reduce the rapid processing device of material pollution is very important for improving the detection efficiency. INVENTION CONTENTS

[0006] Based on the above background, the purpose of the utility model is to provide a material sieving device.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A material sieving device, comprising a vibrating screen, the vibrating screen comprises an upper screen frame and a lower material collecting bin;

[0009] The upper screen frame is fixedly connected with a sieving structure and a vibrating structure;

[0010] The material sieving device further comprises a plurality of material pre-crushing treatment mechanisms fixedly installed at the top position of the upper screen frame;

[0011] The material pre-breaking treatment mechanism comprises a long barrel, a breaking assembly is rotationally connected in the long barrel, the breaking assembly comprises a long breaking shaft rotationally connected in the long barrel, two side-spaced rotary supporting rings are fixedly and assembledly connected on the long breaking shaft, and a plurality of long breaking plates are fixedly and assembledly connected between the rotary supporting rings;

[0012] A plurality of abutting rolling structures are fixedly and assembledly connected on the outer side wall of the rotary supporting ring and roll in the inner side wall of the long barrel.

[0013] The material pre-breaking treatment mechanism further comprises a driving motor assembled on the long breaking shaft.

[0014] Preferably, the screening structure comprises an upper screening net fixedly connected on the upper screen frame and a lower screening rod fixedly connected on the upper screen frame.

[0015] Preferably, the side wall of the upper screen frame is fixedly connected with a mounting plate at the lower end, and the vibration structure comprises a vibration motor fixedly mounted on the mounting plate.

[0016] Preferably, the material screening device further comprises a rack fixedly connected with the lower material collecting bin, and the top of the rack is fixedly connected with the upper screen frame through a plurality of spring members.

[0017] Preferably, the spring members each comprise an upper fixed plate welded thereon, the top of the rack is fixedly connected with a lower fixed plate corresponding to the upper fixed plate, and a reinforcing spring is fixedly connected between the upper fixed plate and the lower fixed plate.

[0018] The bottom of the upper fixed plate is fixedly connected with an upper limiting column limiting in the reinforcing spring, and the top of the lower fixed plate is fixedly connected with a lower limiting column limiting in the reinforcing spring.

[0019] Preferably, the front and rear sides of the top of the upper screen frame are respectively welded with vertical plates, and the long barrel is fixedly connected between the vertical plates.

[0020] Preferably, the top of the long barrel is provided with a feeding hole, and the bottom of the long barrel is provided with a plurality of long-strip-shaped discharging holes.

[0021] Preferably, the abutting rolling structure comprises a fixed seat fixedly connected on the outer side wall of the rotary supporting ring, and the fixed seat is limited with a roller abutting and rolling on the inner side wall of the long barrel.

[0022] Preferably, the rotary supporting ring is fixedly and assembledly connected on the long breaking shaft through a center connecting screw rod.

[0023] The utility model has the following beneficial effects:

[0024] 1. During the operation, the material to be crushed is fed from the feeding hole into the long material cylinder. Because the long material cylinder spans the upper screen frame, it has sufficient length to hold a large amount of material.

[0025] 2. The rotating support ring and long crushing plate rapidly crush the material. Smaller particles are discharged through the discharge hole and enter the screening process, while larger pieces remain in the long crushing cylinder for further crushing. Because the material is in a relatively enclosed space within the long crushing cylinder, contamination is less likely.

[0026] After the material is fed into the sieve, it quickly falls onto the sieve and is then sieved. This allows for rapid collection of the sieved material to be used to create samples. Consequently, this method effectively solves the problem of easy oxidation and contamination of materials during the pre-treatment stage in food testing.

[0027] 3. During the operation, the rotating ring and the long crushing plate have high stability under the action of resistance and rolling. Under high stability, the particle size of the crushed material is more uniform. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the material crushing component in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the anti-rolling structure in an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the long breaking plate in an embodiment of this utility model;

[0033] Figure 5 This is an embodiment of the present utility model. Figure 1 A structural diagram from another perspective.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0038] Example 1

[0039] like Figures 1-5 As shown, a material screening device includes a vibrating screen. The main structure of the vibrating screen is a conventional vibrating screen disclosed in the prior art, and its main structure includes an upper screen frame 1 and a lower collection bin 2. At the same time, a screening structure and a vibration structure are fixedly assembled and connected on the upper screen frame 1.

[0040] Specifically, the sieving structure includes an upper sieve 4 fixedly connected to the upper sieve frame 1 and a lower sieve rod 5 fixedly connected to the upper sieve frame 1. The upper sieve 4 is a metal sieve, and the aperture of the material being sieved is smaller than the sieving gap of the lower sieve rod 5.

[0041] During the sieving process, the material is initially sieved through the upper screen 4 and then passes through the gap of the lower screen rod 5, thus achieving sieving of the material.

[0042] The vibration structure is as follows: a mounting plate is fixedly connected to the lower end of the side wall of the upper screen frame 1, and the vibration structure includes a vibration motor 11 fixedly mounted on the mounting plate.

[0043] Meanwhile, the material screening device further comprises a rack 3 fixedly connected with the lower collecting bin 2 (the rack 3 comprises four vertical columns distributed in a rectangular shape, and the lower collecting bin 2 is fastened to the vertical columns by bolts), and the top of the rack 3 is fixedly connected with the upper screen frame 1 by a plurality of spring members, which is the same as the structure of the existing vibrating screen.

[0044] The spring members each comprise an upper fixed plate welded thereon, the top of the rack 3 is fixedly connected with a lower fixed plate corresponding to the upper fixed plate, and a reinforcing spring is fixedly connected between the upper fixed plate and the lower fixed plate; the bottom of the upper fixed plate is fixedly connected with an upper limiting column limited in the reinforcing spring, and the top of the lower fixed plate is fixedly connected with a lower limiting column limited in the reinforcing spring.

[0045] During operation, when the vibrating motor 11 is in operation, the upper screen frame 1 vibrates at this time, and the material is screened by the above-mentioned screening structure during the vibration of the upper screen frame 1.

[0046] Embodiment 2

[0047] As shown in Figures 1-5 the structure of embodiment 1, the material screening device further comprises two material pre-crushing treatment mechanisms fixedly installed at the top of the upper screen frame 1. The material pre-crushing treatment mechanisms are used to crush the material and screen the crushed material falling into the upper screen frame 1, so that the material is immediately screened after being crushed.

[0048] Specifically, the two material pre-crushing treatment mechanisms can simultaneously perform crushing work, rapidly crush the material required for detection, and achieve a predetermined amount of material.

[0049] The specific structure of the material pre-crushing treatment mechanism is as follows:

[0050] The material pre-crushing treatment mechanism comprises a long material cylinder 61 (specifically, two vertical plates are welded on the front and rear sides of the top of the upper screen frame 1, and the long material cylinder 61 is fixedly connected between the vertical plates).

[0051] The long material cylinder 61 is rotatably connected with a material crushing assembly, the material crushing assembly comprises a long material crushing shaft rotatably connected in the long material cylinder 61, two rotary supporting rings 64 are fixedly and assembled on the long material crushing shaft in an interval manner (the rotary supporting rings 64 are fixedly and assembled on the long material crushing shaft by a center connecting screw 641, specifically, an inner side wall of the rotary supporting ring 64 is fixedly connected with symmetrically arranged threaded fastening seats, and both ends of the center connecting screw 641 are threadedly connected with the threaded fastening seats), and a plurality of long material crushing plates 63 are fixedly and assembled between the rotary supporting rings 64. The long material crushing plates 63 are stainless steel plates with a thickness of 1.5 mm.

[0052] In accordance with existing conventional methods, the two ends of the long crushing shaft are rotatably connected to both sides of the long material cylinder 61. The aforementioned material pre-crushing processing mechanism also includes a drive motor 62 (the drive motor 62 is fixedly mounted on the vertical plate) that is assembled and connected to the long crushing shaft.

[0053] Meanwhile, the top of the long material cylinder 61 is provided with a feeding hole, and the bottom of the long material cylinder 61 is provided with several elongated dropping holes.

[0054] During operation, the material to be crushed is fed into the long material cylinder 61 through the feeding hole. Since the long material cylinder 61 spans the upper screen frame 1, it has sufficient length to accommodate a large amount of material.

[0055] Driven by the drive motor 62, the rotating support ring 64 and the long crushing plate 63 rotate, rapidly crushing the material. The crushed material, with smaller particles, is discharged from the discharge hole and enters the screening process. Larger pieces continue to be trapped in the long material cylinder 61 and tumbled for further crushing. Because the material is in a relatively enclosed space in the long material cylinder 61, it is less prone to contamination.

[0056] After the material is fed into the sieve, it quickly falls onto the sieve and is then sieved. This allows for rapid collection of the sieved material to be used to create samples. Consequently, this method effectively solves the problem of easy oxidation and contamination of materials during the pre-treatment stage in food testing.

[0057] In actual processing, the material can be crushed and screened while being recycled and crushed in another material pre-crushing treatment unit.

[0058] Example 3

[0059] like Figures 1-5 As shown, in this embodiment, based on the structure of Embodiment 2, several abutting rolling structures are fixedly assembled and connected to the outer wall of the rotating ring 64. These abutting rolling structures roll against the inner wall of the long material cylinder 61. During rotation, the rotating ring 64 rotates in a relatively flexible and rapid manner through the abutting rolling structures. Specifically, the abutting rolling structure includes a fixed seat 65 fixedly connected to the outer wall of the rotating ring 64. The fixed seat 65 has rollers 651 that abut against the inner wall of the long material cylinder 61 (specifically, the rollers 651 are confined within the fixed seat 65 and can roll freely relative to the fixed seat 65).

[0060] During operation, the rotating ring 64 rotates under the action of resistance and rolling, resulting in high stability of the entire rotating ring 64-long crushing plate 63 rotation. Under this high stability, the particle size of the crushed material is more uniform.

[0061] Example 4

[0062] likeFigures 1-5 As shown, in order to further improve the crushing effect on the material, the long crushing plate 63 is provided with a plurality of tooth-shaped openings 631 on the basis of the structure of Example 3. Through the design of the tooth-shaped openings 631, the crushing degree of the material during the crushing process is increased, and especially when the food material with slightly greater hardness is crushed, the material is more easily broken when it hits the tooth-shaped openings 631.

[0063] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or replacements made by those skilled in the art within the scope of the present application should also be within the scope of the present application.

Claims

1. A material screening device, characterized by, Including a vibrating screen, the vibrating screen includes an upper screen frame and a lower material collecting bin; The upper screen frame is fixedly connected with a screening structure and a vibrating structure; The material screening device further comprises a plurality of material pre-crushing mechanisms fixedly installed at the top of the upper screen frame; The material pre-crushing mechanism comprises a long material cylinder, a breaking assembly is rotatably connected in the long material cylinder, the breaking assembly comprises a long breaking shaft rotatably connected in the long material cylinder, two side spaced rotary supporting rings are fixedly connected on the long breaking shaft, and a plurality of long breaking plates are fixedly connected between the rotary supporting rings. A plurality of abutting rolling structures are fixedly connected on the outer side wall of the rotary supporting ring, and the abutting rolling structures roll on the inner side wall of the long material cylinder. The material pre-crushing mechanism further comprises a driving motor fixedly connected on the long breaking shaft.

2. The material screening device of claim 1, wherein, The screening structure comprises an upper screening net fixedly connected on the upper screen frame and a lower screening rod fixedly connected on the upper screen frame.

3. The material screening device of claim 1, wherein, The lower end of the side wall of the upper screen frame is fixedly connected with a mounting plate, and the vibrating structure comprises a vibrating motor fixedly installed on the mounting plate.

4. The material screening device of claim 1, wherein, The material screening device further comprises a rack fixedly connected with the lower material collecting bin, and the top of the rack is fixedly connected with the upper screen frame through a plurality of spring members.

5. The material screening device of claim 4, wherein, The spring members each comprise an upper fixed plate welded thereon, the top of the rack is fixedly connected with a lower fixed plate corresponding to the upper fixed plate, and a reinforcing spring is fixedly connected between the upper fixed plate and the lower fixed plate. The bottom of the upper fixed plate is fixedly connected with an upper limiting column limited in the reinforcing spring, and the top of the lower fixed plate is fixedly connected with a lower limiting column limited in the reinforcing spring.

6. The material screening device of claim 1, wherein, The front and rear sides of the top of the upper screen frame are respectively welded with vertical plates, and the long material cylinder is fixedly connected between the vertical plates.

7. The material screening device of claim 1, wherein, The top of the long material cylinder is provided with a feeding hole, and the bottom of the long material cylinder is provided with a plurality of long strip-shaped discharging holes.

8. The material screening device of claim 1, wherein, The abutting rolling structure comprises a fixed seat fixedly connected on the outer side wall of the rotary supporting ring, and the fixed seat is limited with a roller abutting and rolling on the inner side wall of the long material cylinder.

9. The material screening device of claim 1, wherein, The rotary supporting ring is fixedly assembled on the long breaking shaft through a center connecting screw rod.

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