Device for continuously screening granular magnesium oxide

Abstract

The utility model provides a continuous granular magnesium oxide screening device, which relates to the technical field of granular magnesium oxide production, and comprises an outer bearing frame, an inner cavity is arranged in the outer bearing frame, and a plurality of compression springs are arranged at the bottom of the inner part of the inner cavity and are positioned on the front side and the back side; a screening assembly is installed at the tops of the multiple compression springs, the top of the screening assembly is connected with the granulator through a connecting assembly, and small particles screened by the screening assembly can reach the interior of a comprehensive collecting assembly located below the outer bearing frame through a discharging barrel at the bottom; the device can effectively solve the problem of mixing of powder and particles in a traditional particle finishing process, through the design of the screening assembly, the conveying belt and the secondary treatment equipment, the powder is conveyed to the particle finishing equipment again by adopting a screening and recycling mechanism, continuous recycling and reutilization of the powder are ensured, and therefore the production efficiency is improved, and raw material waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the granular magnesium oxide production technical field especially relates to a continuous granular magnesium oxide screening device. BACKGROUND

[0002] Granular magnesium oxide is processed into granular product by wet or dry method, and is widely used in various industrial fields, and granular magnesium oxide usually has high compressibility, good adsorbability and the advantages of no dust flying in use, so in practical application, it has received extensive attention and application.

[0003] In the existing production process, the size difference of the particles is large, which often leads to that the finished product particles do not meet the specification requirements, and at the same time, due to the existence of the mixture of powder and particles, the subsequent screening and separation work is more complicated, which increases the complexity of the production process, in addition, the traditional granulation method still has a large optimization space in efficiency and quality control, these problems directly affect the control of production cost, and reduce the qualified rate of product.

[0004] Therefore, an improved technical scheme is needed to optimize the granulation process, solve the problems of uneven particle size and powder mixing, improve the production efficiency and product quality of granular magnesium oxide, reduce the production cost, simplify the operation process, and meet the growing market demand.

[0005] Therefore, we propose a continuous granular magnesium oxide screening device. UTILITY MODEL CONTENT

[0006] The utility model aims at solving the shortcomings in the prior art, in the existing production process, the size difference of the particles is large, which often leads to that the finished product particles do not meet the specification requirements, at the same time, due to the existence of the mixture of powder and particles, the subsequent screening and separation work is more complicated, which increases the complexity of the production process, in addition, the traditional granulation method still has a large optimization space in efficiency and quality control, these problems directly affect the control of production cost, and reduce the qualified rate of product.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A kind of continuous granular magnesium oxide screening device, including outer load-bearing frame, the inside of the outer load-bearing frame is provided with inner cavity, the bottom of the inside of the inner cavity and at the front and back side are equipped with several compression springs, the top of several The compression spring is installed with screening assembly, the top of the screening assembly is connected with whole granulator by connecting assembly, the small particles screened by the screening assembly can reach the comprehensive collection assembly below the outer load-bearing frame by the discharge barrel of bottom, the dust inside the comprehensive collection assembly can be transported to the whole granulator by the back side of recycling dust negative pressure feed pipe;

[0009] The bottom of the inside of the outer load-bearing frame is provided with second discharge groove near left side, the transmission belt for transporting large particles into corresponding secondary processing equipment is installed below the second discharge groove.

[0010] As the preferred scheme of the utility model, the screening assembly includes screening frame, the back side wall of the screening frame is installed with vibration motor, the inside of the screening frame and near left side are provided with partition plate, the partition plate is provided with several guide grooves, the right side of the partition plate is provided with several screening meshes, the bottom of the inside of the screening frame and left side of the partition plate are provided with first discharge groove.

[0011] As the preferred scheme of the utility model, the first discharge groove and the second discharge groove are used in cooperation with each other, the number of guide grooves is same with the number of screening meshes, several are used in cooperation with each other between vibration motor in real time, the particles intercepted by the guide groove will reach the transmission belt through the first discharge groove and the second discharge groove under the action of the compression spring.

[0012] As the preferred scheme of the utility model, the structure of secondary processing equipment is completely same with the screening assembly and whole granulator.

[0013] As the preferred scheme of the utility model, the connecting assembly includes first connecting piece, the top of the first connecting piece is installed with second connecting piece, the first connecting piece and the second connecting piece are connected with each other by several bolts, the top of the second connecting piece is installed with connecting hose, the connecting hose is connected with each other between whole granulator.

[0014] As the preferred scheme of the utility model, the comprehensive collection assembly includes collection box, the inside of the collection box is installed with partition net, the space above the partition net is particle collection area, the space below the partition net is dust collection area, the bottom of the recycling dust negative pressure feed pipe and dust collection area are connected with each other.

[0015] As the preferred scheme of the utility model, the right side of the collecting box is additionally provided with an initial material box, the right side of the initial material box is connected with a dust negative pressure feeding pipe, and the top of the dust negative pressure feeding pipe is in communication with the whole grain machine.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1. Improve production continuity: the device can effectively solve the problem of powder and particle mixing in traditional whole grain process, through the design of screening assembly, conveying belt and secondary processing equipment, the powder is retransported to the whole grain equipment by screening recovery mechanism, ensuring the continuous recovery and reuse of powder, thereby improving production efficiency and reducing raw material waste.

[0018] 2. Improve particle uniformity: the traditional whole grain process often causes product quality fluctuation due to uneven particle size, through the secondary screening and whole grain process of the device, large particles and fine powder are effectively separated, and finally the particle size is uniform, effectively improving production efficiency and product qualification rate.

[0019] 3. Reduce production cost: through the recovery and reuse of powder, the waste of powder is reduced, the production efficiency is improved, and the production cost and raw material consumption are reduced.

[0020] 4. Simplify operation process: the device is simple in design and easy to maintain, the operations in the production process are more efficient and stable, the operation difficulty is reduced, and it is suitable for large-scale production environment. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model provides a kind of main body structure schematic diagram of the device of continuous granular magnesium oxide screening;

[0022] Figure 2 The utility model provides a kind of partial structure section schematic diagram of the device of continuous granular magnesium oxide screening;

[0023] Figure 3 The utility model provides a kind of connecting assembly schematic diagram of the device of continuous granular magnesium oxide screening;

[0024] Figure 4 The utility model provides a kind of compression spring installation position schematic diagram of the device of continuous granular magnesium oxide screening;

[0025] Figure 5 The utility model provides a kind of whole flow principle schematic diagram of the device of continuous granular magnesium oxide screening.

[0026] Legend: 1. External load-bearing frame; 2. Inner cavity; 3. Screening frame; 4. Compression spring; 5. Dividing plate; 6. Screening mesh; 7. Guide chute; 8. First discharge chute; 9. Second discharge chute; 10. Conveyor belt; 11. Discharge bucket; 12. Collection box; 13. Dividing mesh; 14. First connector; 15. Second connector; 16. Connecting hose; 18. Initial material box; 19. Dust negative pressure feed pipe; 20. Recovered dust negative pressure feed pipe; 21. Granulator. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Example

[0032] like Figures 1-5 As shown, this utility model provides a technical solution: the screening component occupies a core position in the entire continuous particle magnesium oxide screening device, and its structure and function are designed closely around the key task of particle screening. The screening frame 3 is made of high-strength, corrosion-resistant metal material, which provides a stable and solid support foundation for the entire screening operation.

[0033] The vibration motor adopts advanced eccentric block type vibration principle. When the motor starts, the eccentric block inside the motor rotates at high speed to generate centrifugal force.

[0034] The centrifugal force acts on the screening frame 3 to produce alternating vibration forces in the horizontal and vertical directions, thereby causing the particle materials placed on the screening net 6 to jump, roll and slide relative to each other.

[0035] The partition plate 5 is installed at a specific angle near the left side inside the screening frame 3. The guide chute 7 opened therein is in the shape of an elongated rectangle, and the chute wall is finely polished to reduce the resistance and wear of the particles during flow.

[0036] The width of the guide chute 7 is accurately designed according to the particle size distribution range of the particles to be screened. For example, for magnesium oxide particles, if they are expected to be divided into three grades of large, medium and small, the width of the guide chute 7 is set to be able to intercept the size of the large particles, so that these large particles slide along the guide chute 7 to the left side. The screening net 6 is made of stainless steel wire woven mesh with different hole diameters, and the hole diameter gradually decreases from left to right, which is coarse mesh, medium mesh and fine mesh in turn.

[0037] With the help of the compression spring 4, when the screening frame 3 vibrates, the large particles intercepted by the guide chute 7 gradually move to the first discharge chute 8 under the combined action of their own gravity and the spring force.

[0038] The first discharge chute 8 is located at the left bottom of the partition plate 5, and is in the shape of a downward inclined funnel, which is spatially connected to the second discharge chute 9.

[0039] The second discharge chute 9 is opened at the position near the left side inside the bottom of the outer supporting frame 1, and is directly aligned with the conveying belt 10 below, ensuring that the large particles can smoothly slide onto the conveying belt 10 for subsequent secondary processing.

[0040] Principle: The eccentric block of the vibration motor rotates to generate centrifugal force, which is converted into vibration of the screening frame 3, so that the particles are in an active state of motion on the screening net 6. The guide chute 7 preliminarily screens and divides the particles according to the particle size difference, and the large particles are discharged from the discharge chute by using the gravity and spring force. The screening net 6 with different hole diameters further classifies the particles.

[0041] The connecting assembly serves as a material transmission bridge between the screening assembly and the whole grain machine 21, and its design fully considers the work coordination and stability between the two. The first connecting piece 14 is made of thick metal plate, which is fixed tightly with the top of the screening assembly by welding or high-strength bolt connection, to ensure that it will not loosen or displace in the long-term vibration environment.

[0042] The second connecting piece 15 is made of metal material with certain elasticity and fatigue resistance, and is designed as a structure with a convex middle and flat ends, so as to adapt to the up-and-down fluctuation of the screening assembly during vibration and ensure good contact between the first connecting piece 14 and the connecting hose 16.

[0043] The bolt connection part is reinforced by a lock nut and a washer, and the bolt is made of high-strength alloy steel and has excellent tensile strength and shear resistance after special heat treatment.

[0044] The connecting hose 16 is made of rubber material with wear resistance, high temperature resistance and corrosion resistance, and is internally lined with a high-strength fiber braid layer to enhance the pressure-bearing capacity of the hose. The two ends of the hose are tightly connected to the second connecting piece 15 and the discharge port of the whole grain machine 21 through special metal clamps, and the tightening force of the clamps is accurately adjusted to ensure sealing performance without excessive extrusion of the hose affecting its service life.

[0045] When the whole grain machine 21 is working, the material is pushed to the connecting hose 16 by the internal mechanical force, and smoothly enters the screening assembly for screening treatment through the flexible guidance of the hose.

[0046] The screened material, such as fine powder or unqualified particles that need to be returned to the whole grain machine 21 for further processing, can flow in the opposite direction along the connecting hose 16 under the action of negative or positive pressure generated by the related equipment, and re-enter the whole grain machine 21 to realize the circulation of the material.

[0047] Principle: By using the stable installation of the first connecting piece 14, the elastic adaptation of the second connecting piece 15, the flexible transmission and sealing characteristics of the connecting hose 16, and the reliability of the bolt connection, a high-efficiency, stable and bidirectional material transmission channel between the screening assembly and the whole grain machine 21 is constructed, ensuring smooth circulation of the material between them.

[0048] The comprehensive collection assembly plays an important role in accurately classifying and collecting the particles and dust generated during the screening process for recycling.

[0049] The collection box 12 is made of a metal box structure with good sealing performance, and the internal partition net 13 is made of fine stainless steel wire mesh. The mesh size is carefully designed to effectively block particles from entering the dust collection area while allowing fine dust particles to pass through smoothly under the action of airflow.

[0050] The particle collection area is located above the partition net 13 and has a large space to accommodate more qualified particles after screening. An inlet connected to the discharge bucket 11 is provided at the top of the collection box 12, so that when small particles in the screening assembly fall through the discharge bucket 11, they can directly enter the particle collection area.

[0051] The dust collection area is located below the dividing screen 13, and the bottom is designed in a conical shape to facilitate the concentration of dust to the recycling dust negative pressure feed pipe 20.

[0052] The recycling dust negative pressure feed pipe 20 is connected to the conical part at the bottom of the dust collection area, and a flow regulating valve and a pressure sensor are installed on the pipeline.

[0053] The flow regulating valve can accurately adjust the recycling flow of dust according to the working requirements of the sizing machine 21 and the amount of dust generated, and the pressure sensor monitors the negative pressure value in the pipe in real time to ensure that the dust can be smoothly transported to the sizing machine 21 under the stable negative pressure.

[0054] The initial material tank 18 on the right side of the collection tank 12 is made of transparent plastic material, which facilitates the observation of the internal dust inventory by the operator.

[0055] The connection part between the dust negative pressure feed pipe 19 and the initial material tank 18 uses a sealed rubber joint to prevent dust leakage. During the operation of the sizing machine 21, the negative pressure generated inside is transmitted to the initial material tank 18 through the dust negative pressure feed pipe 19, and the dust in it is sucked into the sizing machine 21 for processing.

[0056] In the entire production process, the material first enters the sizing machine 21 for preliminary agglomeration or crushing treatment, forming a particle mixture with a certain particle size distribution, and then the material from the outlet of the sizing machine 21 enters the connecting assembly and enters the screening assembly through the connecting hose 16.

[0057] In the screening assembly, the vibration motor drives the screening frame 3 to vibrate, and the large particles are intercepted by the guide chute 7 on the dividing plate 5 and slide down to the conveyor belt 10 through the first discharge chute 8 and the second discharge chute 9 under the action of the compression spring 4 and gravity.

[0058] The conveyor belt 10 runs at a stable speed to transport the large particles to the secondary processing equipment.

[0059] The structure of the secondary processing equipment is the same as that of the screening assembly and the sizing machine 21, and the large particles here again undergo screening and sizing processes, thereby making them more uniform.

[0060] The small particles and dust in the screening assembly enter the particle collection area and the dust collection area of the comprehensive collection assembly, respectively, and the dust also returns to the sizing machine 21 under the action of the recycling dust negative pressure feed pipe 20.

[0061] In this way, the powder produced by the initial screening is timely recycled and participates in the sizing process again, ensuring the continuity of the material circulation in the entire production process and avoiding production interruption due to powder accumulation or untimely processing, thereby significantly improving production efficiency and reducing raw material waste in the production link.

[0062] Workflow: whole grain machine 21 (material preliminary processing) → connecting component (material transmission) → screening component (vibration screening, large particle separation, small particle and dust collection respectively) → comprehensive collection component (dust recycling to whole grain machine 21) → conveying belt 10 (large particle conveying) → secondary processing equipment (re-screening and whole grain, powder back to whole grain machine 21)

[0063] After the material comes out of the whole grain machine 21, it enters the screening component. Due to the multi-stage setting of the screening net 6, the aperture gradually decreases from left to right. Larger particles are first intercepted by the guide chute 7, preliminarily realizing the separation of large particles and smaller particles.

[0064] Smaller particles continue to move to the right and pass through screening nets 6 of different apertures in turn, further refining and grading. After preliminary screening, large particles are transmitted to the secondary processing equipment, where they again undergo the same screening and whole grain process.

[0065] The vibration motor in the secondary processing equipment drives the screening frame 3 to vibrate again, and large particles are intercepted and further refined, while fine powder is separated out. Through this two-time screening and whole grain process, super-large particles and fine powder in the particles can be effectively removed, making the particle size of the final product more uniform, effectively avoiding product quality fluctuations caused by uneven particle size, improving product consistency and stability, and thus improving production efficiency and product qualification rate.

[0066] Workflow: whole grain machine 21 (material preliminary processing) → screening component (initial screening and grading) → conveying belt 10 (large particle conveying) → secondary processing equipment (re-screening and whole grain, refining large particles, separating fine powder).

[0067] In the production process, the comprehensive collection component plays a key role in cost control. By separating particles and dust in the screening process through the dividing net 13 in the collection box 12, the dust in the dust collection area is transported back to the whole grain machine 21 for reprocessing under the action of the recycling dust negative pressure feed pipe 20, avoiding the loss of raw materials caused by the discharge of dust as waste.

[0068] At the same time, the dust collected by the initial material box 18 is also returned to the whole grain machine 21 through the dust negative pressure feed pipe 19, further improving the utilization rate of raw materials.

[0069] In addition, due to the improvement of production continuity, the additional costs such as equipment idling, energy waste caused by production interruption, and rework, scrap caused by unqualified products are reduced. The improvement of particle uniformity also reduces customer complaints and market losses caused by product quality problems, thereby reducing overall production cost and raw material consumption from multiple aspects.

[0070] The structural design of the device follows the principle of simplicity and efficiency, and the connection and cooperation relationship between various components are clear and obvious.

[0071] The vibration motor of the screening assembly is automatically controlled, and only needs to set vibration frequency, amplitude and other parameters on the control panel, so that stable operation can be realized.

[0072] In summary, the continuous granular magnesium oxide screening device realizes efficient particle screening, accurate recycling and reuse and stable and convenient production process through the unique structural design and cooperative working mechanism of each component, improves production efficiency and product quality, effectively reduces production cost and simplifies operation process.

[0073] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for continuous sieving of particulate magnesium oxide comprising an outer load bearing frame (1), characterised in that: The inner cavity (2) of the outer load-bearing frame (1) is internally provided with a plurality of compression springs (4) installed at the bottom and located at the front and back sides, the top of the plurality of compression springs (4) is provided with a screening assembly, the top of the screening assembly is connected with a sizing machine (21) through a connecting assembly, the small particles screened by the screening assembly can reach the comprehensive collecting assembly below the outer load-bearing frame (1) through the discharge barrel (11) at the bottom, and the comprehensive collecting assembly can transport the dust inside to the sizing machine (21) through the recycling dust negative pressure feeding pipe (20) at the back side. The bottom of the inner cavity of the outer load-bearing frame (1) is provided with a second discharge groove (9) near the left side, and a conveying belt (10) is installed below the second discharge groove (9), which is used for conveying large particles into the corresponding secondary treatment equipment.

2. A device for continuous sieving of particulate magnesium oxide according to claim 1, characterized in that: The screening assembly comprises a screening frame (3), a vibration motor is installed on the back wall of the screening frame (3), a partition plate (5) is arranged inside the screening frame (3) and near the left side, a plurality of guide grooves (7) are formed in the partition plate (5), a plurality of screening meshes (6) are arranged on the right side of the partition plate (5), and a first discharge groove (8) is formed in the bottom of the screening frame (3) and on the left side of the partition plate (5).

3. A device for continuous sieving of particulate magnesium oxide according to claim 2, characterized in that: The first discharge groove (8) and the second discharge groove (9) are used in cooperation, the number of the guide grooves (7) is the same as that of the screening meshes (6), a plurality of the guide grooves (7) are used in cooperation with the vibration motor, and the particles intercepted by the guide grooves (7) can reach the conveying belt (10) through the first discharge groove (8) and the second discharge groove (9) under the action of the compression springs (4).

4. A device for continuous sieving of particulate magnesium oxide according to claim 3, characterized in that: The structure of the secondary treatment equipment is completely same as that of the screening assembly and the sizing machine (21).

5. A device for continuous sieving of particulate magnesium oxide according to claim 4, characterized in that: The connecting assembly comprises a first connecting piece (14), a second connecting piece (15) is installed on the top of the first connecting piece (14), the first connecting piece (14) and the second connecting piece (15) are connected with each other through a plurality of bolts, a connecting hose (16) is installed on the top of the second connecting piece (15), and the connecting hose (16) is connected with the sizing machine (21).

6. A continuous particulate magnesium oxide screening device according to claim 5, wherein: The comprehensive collecting assembly comprises a collecting box (12), a partition net (13) is installed in the collecting box (12), the space above the partition net (13) is a particle collecting area, the space below the partition net (13) is a dust collecting area, and the bottom of the recycling dust negative pressure feeding pipe (20) is connected with the dust collecting area.

7. A continuous apparatus for sizing particulate magnesium oxide according to claim 6, wherein: A primary material box (18) is further installed on the right side of the collecting box (12), a dust negative pressure feeding pipe (19) is connected to the right side of the primary material box (18), and the top of the dust negative pressure feeding pipe (19) is in communication with the sizing machine (21).

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