Granular material crushing and screening system
By introducing an angle of rest tester and screen angle adjustment device in the granular material crushing screening system, the problem of the existing system reducing screening efficiency when dealing with different powder materials is solved, and more efficient screening and lower production costs are achieved.
Patent Information
- Application Number
- CN202421820996.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing crushing screening system will reduce the screening efficiency when processing different powder materials, especially when the rest angle of the powder material to be treated becomes larger, the screening efficiency of the screening machine will slow down.
A granular material crushing and screening system is designed, including crushers, screeners and angle of rest testers. The angle of rest tester is connected through the discharge channel and the sampling channel, and the angle of rest of the crushed material is detected, and the screen surface angle is adjusted through the screen angle adjustment device to adapt to the flowability of different materials.
By automatically adjusting the screening surface angle, the screening efficiency is improved, the material is retained on the screening surface, the production cost is reduced, and it is suitable for the crushing and grading of a variety of powder materials.
Smart Images
Figure CN222969982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of powder material processing, and more specifically, to a particle material crushing and screening system. Background Art
[0002] In the process of powder material processing, the raw materials need to be crushed and screened. After the materials are crushed by the crusher, they enter the screening machine and are screened by the screening machine to obtain the oversize and undersize materials. In the existing crushing and screening system, the screen surface of the screening machine can only run at a fixed angle. When the type of powder material changes, the screening efficiency will change. In particular, when the repose angle of the powder material to be processed becomes larger, the screening efficiency of the screening machine will slow down, resulting in reduced screening efficiency.
[0003] Therefore, how to provide an efficient granular material crushing and screening system has become a technical problem that urgently needs to be solved in this field. Utility Model Content
[0004] The utility model aims to provide a particle material crushing and screening system with high screening efficiency.
[0005] The utility model provides a granular material crushing and screening system, comprising a crusher, a screening machine and a repose angle tester;
[0006] The discharging end of the crusher and the feeding end of the screening machine are connected through a discharging channel;
[0007] The unloading channel is connected with a sampling channel, and the angle of repose tester is connected to the discharge end of the sampling channel;
[0008] The screening machine comprises a screen and a screen angle adjusting device, and the screen angle adjusting device is used to adjust the screen surface angle of the screen.
[0009] Optionally, the particulate material crushing and screening system further comprises a weighing sensor arranged on the screening machine, and the weighing sensor is used to detect the weight of the material on the screen.
[0010] Optionally, the screen angle adjustment device includes a lifting structure, which is connected to the material incoming side of the screen. The lifting structure drives the material incoming side of the screen to perform lifting and lowering movements to change the inclination angle of the screen surface.
[0011] Optionally, the screening machine further comprises a retractable annular screen outer frame, which surrounds and is connected to the periphery of the screen;
[0012] The screen angle adjustment device comprises a screen lifting shaft, and the screen lifting shaft is connected at the center of the screen;
[0013] When the screen lifting shaft drives the center of the screen to move upward, the annular screen outer frame shrinks and gradually becomes smaller, and the screen surface becomes conical.
[0014] Optionally, the crusher includes at least a primary crusher, a secondary crusher, and a tertiary crusher;
[0015] The screening machine includes at least a first screening machine, a second screening machine, and a third screening machine;
[0016] The discharge end of the primary crusher is connected to the feed end of the first screening machine; the under-screen discharge end of the first screening machine is connected to the feed end of the secondary crusher; the discharge end of the secondary crusher is connected to the feed end of the second screening machine; the under-screen discharge end of the second screening machine is connected to the feed end of the tertiary crusher; the discharge end of the tertiary crusher is connected to the feed end of the third screening machine;
[0017] On the feeding channels of the primary crusher, the secondary crusher, and the tertiary crusher, a repose angle tester is connected respectively through the discharge ends of independent sampling channels.
[0018] Optionally, the granular material crushing and screening system further includes a collection bin and a material channel;
[0019] The over-screen discharge ends of the first screening machine, the second screening machine, and the third screening machine are all communicated with the collection bin, and the material channel is connected between the discharge end of the collection bin and the feed end of the primary crusher.
[0020] Optionally, a conveying air flow in the direction of material conveyance is connected to the material channel.
[0021] Optionally, the screen size of the first screening machine is from 2 mesh to 20 mesh;
[0022] The screen size of the second screening machine is from 20 mesh to 100 mesh;
[0023] The screen size of the third screening machine is from 100 mesh to 500 mesh.
[0024] Optionally, the crusher includes a jaw crusher or a roll crusher or a rotary wheel mill crusher or a toothed roll crusher or a combination of several different forms.
[0025] Optionally, the roll crusher is a pair of roll crushers.
[0026] According to the technical content disclosed by the present utility model, the following beneficial effects are achieved:
[0027] The particle material crushing and screening system provided by the present utility model is connected with a sampling channel on the feeding channel, and a repose angle tester is connected to the discharge end of the sampling channel; the materials crushed by the crusher can enter the repose angle tester through the sampling channel, and the screen angle adjusting device of the screening machine can adjust the screen surface angle of the screen of the screening machine to an appropriate angle according to the detection result of the repose angle tester, so as to maximize the screening efficiency on the premise of ensuring the screening accuracy, and prevent the insufficient fluidity of the materials on the screen surface due to too small a screen surface angle, resulting in too long a residence time of the materials on the screen surface and reducing the screening efficiency.
[0028] Other features and advantages of the present utility model will become clear from the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. Brief Description of the Drawings
[0029] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present utility model and, together with the description thereof, are used to explain the principles of the present utility model.
[0030] Figure 1 It is a schematic diagram of the particle material crushing and screening system of the present utility model.
[0031] Figure 2 It is a schematic diagram of the initial state of the first screen angle adjusting device of the present utility model.
[0032] Figure 3 It is a schematic diagram of the adjusted state of the first screen angle adjusting device of the present utility model.
[0033] Figure 4 It is a schematic diagram of the second screen angle adjusting device of the present utility model.
[0034] Description of the reference numerals: 1, buffer bin; 21, primary crusher; 22, secondary crusher; 23, tertiary crusher; 31, first repose angle tester; 32, second repose angle tester; 33, third repose angle tester; 41, first screening machine; 42, second screening machine; 43, third screening machine; 401, outer frame of the annular screen; 402, screen; 403, screen lifting shaft; 404, lifting structure; 5, finished product bin; 6, collection bin; 7, material channel. Detailed Description of the Embodiments
[0035] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps set forth in these embodiments do not limit the scope of the present utility model.
[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present utility model, its applications, or uses.
[0037] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.
[0038] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as limitations. Accordingly, other examples of the exemplary embodiments may have different values.
[0039] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
[0040] The object of the present utility model is to effectively solve the crushing of agglomerated particles and the screening of particle grading, aiming to solve the crushing and screening problems of powder materials with different fluidities. By automatically adjusting the screening angle, the material breaks through the limit of its natural angle of repose to generate fluidity, thereby achieving effective screening after crushing, reducing the load on subsequent equipment, improving processing efficiency, and reducing production costs.
[0041] See Figure 1 , the present utility model discloses a particle material crushing and screening system, including a buffer bin 1, a crusher, a screening machine, a natural angle of repose tester, a collection bin 6, a feeding channel, a sampling channel, a material channel 7, and a weighing sensor; the discharge end of the crusher and the feeding end of the screening machine are connected through the feeding channel; a sampling channel is connected to the feeding channel, and the natural angle of repose tester is connected to the discharge end of the sampling channel; the screening machine includes a screen and a screen angle adjusting device, and the screen angle adjusting device is used to adjust the screen surface angle of the screen. Through the screening machine with adjustable angle, the crushing and grading functions of different types of powder materials can be adapted. The crusher includes a jaw crusher or a roll crusher or a rotary wheel mill crusher or a toothed roll crusher or a combination of several different forms. Specifically, in this embodiment, the crusher uses a pair of roll crushers.
[0042] Specifically, in this embodiment, the crusher includes a primary crusher 21, a secondary crusher 22, and a tertiary crusher 23; the screening machine includes a first screening machine 41, a second screening machine 42, and a third screening machine 43. The screen size of the first screening machine is from 2 mesh to 20 mesh; the screen size of the second screening machine is from 20 mesh to 100 mesh; the screen size of the third screening machine is from 100 mesh to 500 mesh. The angle of repose tester includes a first angle of repose tester 31, a second angle of repose tester 32, and a third angle of repose tester 33. The discharge end of the buffer bin 1 is connected to the feed end of the primary crusher 21, and the discharge end of the primary crusher 21 is connected to the feed end of the first screening machine 41; the under-screen discharge end of the first screening machine 41 is connected to the feed end of the secondary crusher 22; the discharge end of the secondary crusher 22 is connected to the feed end of the second screening machine 42; the under-screen discharge end of the second screening machine 42 is connected to the feed end of the tertiary crusher 23; the discharge end of the tertiary crusher 23 is connected to the feed end of the third screening machine 43, and the under-screen material of the third screening machine 43 enters the finished product bin 5 for storage; on the feeding channels of the primary crusher 21, the secondary crusher 22, and the tertiary crusher 23, an angle of repose tester is connected through an independent sampling channel respectively. Specifically, a first angle of repose tester 31 is connected through an independent sampling channel on the feeding channel of the primary crusher 21; a second angle of repose tester 32 is connected through an independent sampling channel on the feeding channel of the secondary crusher 22; a third angle of repose tester 33 is connected through an independent sampling channel on the feeding channel of the tertiary crusher 23. The first angle of repose tester 31, the second angle of repose tester 32, and the third angle of repose tester 33 are respectively used to detect the angle of repose values of the materials after being crushed by the primary crusher 21, the secondary crusher 22, and the tertiary crusher 23.
[0043] The particle material crushing and screening system adjusts the screen surface angle through the screen mesh angle adjustment device according to the angle of repose values of the materials after crushing by the first angle of repose tester 31, the second angle of repose tester 32, and the third angle of repose tester 33 for the primary crusher 21, the secondary crusher 22, and the tertiary crusher 23. The particle material crushing and screening system further includes a weighing sensor disposed on the screening machine. The weighing sensor is used to detect the weight of the material on the screen mesh 402. When the weight of the material on the screen mesh 402 is too large, it means that the screen surface angle of the screening machine is too small and the screening efficiency of the screening machine is insufficient. At this time, the screen surface angle can be adjusted through the screen mesh angle adjustment device to improve the fluidity of the material on the screen surface. By installing an angle of repose test device in front of the screen mesh 402 and cooperating with the weighing sensor to adjust the angle of the material after multi-stage pair-rolls, on the basis of effectively enabling different materials to flow, it can also disperse the production capacity accumulation pressure of multi-stage pair-rolls, achieving high efficiency in comprehensive crushing. This system improves the applicability of various materials in particle crushing and also improves the crushing efficiency of multi-stage pair-rolls. It avoids the problem of multi-stage over-crushing of particles through multi-stage pair-rolls, and at the same time conducts linkage control over crushing and screening, improving the crushing efficiency of the product and also having a good improvement in product performance. This system can be applied to various powder material industries.
[0044] The oversize discharge ends of the first screening machine 41, the second screening machine 42, and the third screening machine 43 are all connected to the collection bin 6. The collection bin 6 is used to cache the oversize of the first screening machine 41, the second screening machine 42, and the third screening machine 43. The material channel 7 is connected between the discharge end of the collection bin and the feed end of the primary crusher. The material channel 7 is connected with a conveying air flow in the direction of material transportation, and the material in the collection bin 6 is transported to the buffer bin 1 for reprocessing through the air flow.
[0045] Combined with Figure 2 and Figure 3 , the screening machine further includes a telescopic outer frame 401 of the annular screen mesh. The telescopic outer frame 401 of the annular screen mesh surrounds and is connected to the outer periphery of the screen mesh 402; the screen mesh angle adjustment device includes a screen mesh lifting shaft 403. The screen mesh lifting shaft 403 is connected to the center of the screen mesh 402; when the screen mesh lifting shaft 403 drives the center of the screen mesh 402 to move upward, the telescopic outer frame 401 of the annular screen mesh contracts and the diameter gradually becomes smaller, and the surface of the screen mesh 402 is in a conical shape, giving the screen mesh 402 a certain angle and improving the screening efficiency.
[0046] Combined with 4, in some embodiments, the screen mesh angle adjustment device includes a lifting structure 404. The lifting structure 404 is connected to the incoming material side of the screen mesh 402. The lifting structure 404 drives the incoming material side of the screen mesh 402 to make a lifting movement to change the inclination angle of the screen surface and improve the screening efficiency.
[0047] In summary, for the granular material crushing and screening system provided by the present utility model, a sampling channel is connected to the feeding channel, and the angle of repose tester is connected to the discharge end of the sampling channel. The material crushed by the crusher can enter the angle of repose tester through the sampling channel, and the screen angle adjusting device can adjust the screen surface angle of the screen of the screening machine to an appropriate angle according to the detection result of the angle of repose tester, so as to maximize the screening efficiency on the premise of ensuring the screening accuracy, and prevent the insufficient fluidity of the material on the screen surface due to the too small screen surface angle, resulting in too long residence time of the material on the screen surface and reducing the screening efficiency.
[0048] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.
Claims
1. A granular material crushing and screening system, characterized in that: include: crushers, screens and angle of repose testers; The discharging end of the crusher and the feeding end of the screening machine are connected via a discharging channel; The unloading channel is connected to a sampling channel, and the angle of repose tester is connected to the discharge end of the sampling channel; The screening machine comprises a screen and a screen angle adjustment device, and the screen angle adjustment device is used to adjust the screen surface angle of the screen.
2. The granular material crushing and screening system according to claim 1, characterized in that: The granular material crushing and screening system further comprises a weighing sensor arranged on the screening machine, and the weighing sensor is used to detect the weight of the material on the screen.
3. The granular material crushing and screening system according to claim 1 or 2, characterized in that: The screen angle adjustment device comprises a lifting structure, which is connected to the material-incoming side of the screen. The lifting structure drives the material-incoming side of the screen to perform lifting motion to change the inclination angle of the screen surface.
4. The granular material crushing and screening system according to claim 1 or 2, characterized in that: The screening machine also includes a retractable annular screen outer frame, which surrounds and is connected to the outer periphery of the screen; The screen angle adjustment device comprises a screen lifting shaft, and the screen lifting shaft is connected at the center of the screen; When the screen lifting shaft drives the center of the screen to move upward, the annular screen outer frame shrinks and gradually becomes smaller, and the screen surface is conical.
5. The granular material crushing and screening system according to claim 1 or 2, characterized in that: The crusher comprises at least a primary crusher, a secondary crusher and a tertiary crusher; The screening machine at least comprises a first screening machine, a second screening machine and a third screening machine; The discharge end of the primary crusher is connected to the feed end of the first screening machine; the under-screen discharge end of the first screening machine is connected to the feed end of the secondary crusher; the discharge end of the secondary crusher is connected to the feed end of the second screening machine; the under-screen discharge end of the second screening machine is connected to the feed end of the tertiary crusher; the discharge end of the tertiary crusher is connected to the feed end of the third screening machine; The discharging channels of the primary crusher, the secondary crusher and the tertiary crusher are respectively connected with one of the angle of repose testers through the discharging ends of independent sampling channels.
6. The granular material crushing and screening system according to claim 5, characterized in that: The granular material crushing and screening system also includes a collecting bin and a material channel; The discharge ends of the screened material of the first screening machine, the second screening machine and the third screening machine are all connected to the collecting bin, and the material channel is connected between the discharge end of the collecting bin and the feed end of the primary crusher.
7. The granular material crushing and screening system according to claim 6, characterized in that: The material channel is connected to a conveying airflow that flows in the material conveying direction.
8. The granular material crushing and screening system according to claim 5, characterized in that: The screen size of the first screening machine is 2 mesh to 20 mesh; The screen size of the second screening machine is 20 mesh to 100 mesh; The screen size of the third screening machine is 100 mesh to 500 mesh.
9. The granular material crushing and screening system according to claim 1 or 2, characterized in that: The crusher comprises a jaw crusher, a roll crusher, a rotary mill crusher, a toothed roll crusher or a combination of several different types.
10. The granular material crushing and screening system according to claim 9, characterized in that: The roller crusher is a double-roll crusher.