Double-deck ore vibrating screen

Abstract

This application discloses a double-layer vibrating screen for ore, comprising: a first screen with first screen holes for first screening of the ore; and a second screen with second screen holes, the second screen holes having a smaller diameter than the first screen holes, for second screening of the ore; the second screen and the first screen are connected at intervals. Because the first and second screens have different hole diameters and are spaced apart, after the ore is pre-screened through the first screen, any ore that passes through will fall into the second screen for finer screening, thus achieving ore grading. Furthermore, compared to screen plates, the screen is lighter, smaller, easier to install and set up, and less prone to jamming or screen clogging. It meets diverse screening needs and further ensures operational safety.

Description

Technical Field

[0001] This application relates to the field of ore screening, specifically to a double-layer ore vibrating screen. Background Technology

[0002] The function of an ore vibrating screen is to separate and classify ore materials of different particle sizes, thereby meeting the particle size requirements of subsequent processes.

[0003] In existing technologies, ore vibrating screens mostly adopt the form of screen plates, which are large in size and weight, time-consuming and labor-intensive to install, and are limited by processing technology, easily causing material jamming and screen clogging. Especially in rainy or snowy weather conditions, the ore powder adhering to the screen surface is extremely difficult to clean, which not only reduces the operating time of the screening equipment but also increases a lot of labor costs. There is also a safety risk of mechanical injury during the cleaning of the vibrating screen plates, and the ability to distinguish between ores of different sizes is poor. Utility Model Content

[0004] In view of this, this application discloses a double-layer ore vibrating screen, which solves the above problems to a certain extent by adopting a screen mesh and setting two layers. Specifically, the technical solution of this application is as follows:

[0005] A double-layer ore vibrating screen, comprising:

[0006] The first screen has first screen holes distributed on it for the first screening of the ore;

[0007] The second screen has second screen holes distributed on it. The aperture of the second screen holes is smaller than that of the first screen holes. It is used for a second screening of the ore.

[0008] The second screen and the first screen are connected at intervals.

[0009] Furthermore, the second screen and the first screen are connected at an interval as follows:

[0010] The first screen has a first pressure strip on its edge side, and a groove is provided on the first pressure strip, in which a rod is fixedly connected;

[0011] The second screen has a second pressure strip on its edge side, and the second pressure strip has an insertion hole, into which the insertion rod is inserted.

[0012] Furthermore, the first pressure bar has two sections, located on the edge sides of the two long sides of the first screen, and the number and position of the second pressure bar correspond to those of the first pressure bar.

[0013] Furthermore, the number of the insertion rods is no less than two.

[0014] Furthermore, the first and second screens are made of wire mesh using plain or twill weave.

[0015] Furthermore, the wire diameter of the first screen is larger than that of the second screen.

[0016] According to a preferred embodiment, steel plates are installed on the outer sides of the first and second pressure strips.

[0017] Furthermore, the steel plate is provided with slots corresponding to the first pressure strip and the second pressure strip.

[0018] Furthermore, the first screen and the second screen are inclined at a certain angle relative to the horizontal plane.

[0019] Furthermore, the tilt angle of the first screen is smaller than that of the second screen.

[0020] Because the first and second screens have different apertures and are spaced apart, after the ore is pre-screened through the first screen, any ore that passes through will fall onto the second screen for finer screening, thus achieving ore grading. Furthermore, compared to screen plates, screens are lighter, smaller, and easier to install and set up, reducing the likelihood of material jamming or screen clogging. This meets diverse screening needs and further ensures operational safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a double-layer ore vibrating screen disclosed in this application;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of a double-layer ore vibrating screen after steel plates are installed.

[0023] Explanation of reference numerals in the attached drawings: 1-First screen, 11-First screen hole, 12-First pressure bar, 2-Second screen, 21-Second screen hole, 22-Second pressure bar, 3-Insert rod, 4-Steel plate. Detailed Implementation

[0024] The function of an ore vibrating screen is to separate and classify ore materials of different particle sizes, thereby meeting the particle size requirements of subsequent processes.

[0025] In existing technologies, ore vibrating screens mostly adopt the form of screen plates, which are large in size and weight, time-consuming and labor-intensive to install, and are limited by processing technology, easily causing material jamming and screen clogging. Especially in rainy or snowy weather conditions, the ore powder adhering to the screen surface is extremely difficult to clean, which not only reduces the operating time of the screening equipment but also increases a lot of labor costs. There is also a safety risk of mechanical injury during the cleaning of the vibrating screen plates, and the ability to distinguish between ores of different sizes is poor.

[0026] In view of this, this application discloses a double-layer ore vibrating screen, which solves the above problems to a certain extent by adopting a screen and setting two layers.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0028] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0029] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0030] The embodiments of this application will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of this application. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of this application, but are merely for illustrating the essential spirit of the technical solution of this application.

[0031] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0032] Specifically, such as Figure 1 As shown, in one embodiment of the application, a double-layer ore vibrating screen includes:

[0033] A first screen 1, with first screen holes 11 distributed on the first screen 1, is used to perform the first screening of the ore;

[0034] The second screen 2 has second screen holes 21 distributed on it. The aperture of the second screen holes 21 is smaller than that of the first screen holes 11. It is used for a second screening of the ore.

[0035] The second screen 2 and the first screen 1 are connected at intervals.

[0036] During ore screening, the ore material enters from above the first screen 1, and the double-layer vibrating screen begins operation based on external vibration excitation force. The ore material first falls onto the first screen 1. During vibration, the ore material continuously jumps, rolls, and slides on the screen surface. Particles smaller than the aperture of the first screen 11 fall through the first screen 11 into the second screen 2 under their own gravity and vibration, while particles larger than the aperture of the first screen 11 remain on the first screen 1. Similarly, particles smaller than the aperture of the second screen 21 fall through the second screen 21 into the collection device below under their own gravity and vibration, while particles larger than the aperture of the second screen 21 remain on the second screen 2. The ore material in the first screen 1 and the second screen 2 is finally discharged from the discharge end.

[0037] The discharge end is one side of the first screen 1 and the second screen 2, which can be adjusted according to the external vibration excitation force.

[0038] The feeding speed should be adjusted appropriately according to the actual screening situation so as not to exceed the screening capacity of the double-layer ore vibrating screen.

[0039] Because the first screen 1 and the second screen 2 have different apertures and are spaced apart, after the ore is pre-screened through the first screen 1, the ore that passes through the first screen falls onto the second screen 2 for finer screening, thus achieving ore grading. At the same time, compared to screen plates, screens are lighter, smaller, easier to install and set up, and less prone to jamming or screen clogging. This meets diverse screening needs and further ensures operational safety.

[0040] Furthermore, the second screen 2 and the first screen 1 are connected at intervals as follows:

[0041] The first screen 1 has a first pressure strip 12 on its edge side, and the first pressure strip 12 has a groove, in which a rod 3 is fixedly connected;

[0042] The second screen 2 has a second pressure strip 22 on its edge side, and the second pressure strip 22 has an insertion hole, into which the insertion rod 3 is inserted.

[0043] The first pressure strip 12 and the second pressure strip 22 are made of high-strength metal materials, such as manganese steel or alloy steel, to ensure sufficient strength and rigidity for pressing the first screen 1 and the second screen 2. The insert rod 3 is fixedly connected within the groove of the first pressure strip 12, and its shape and size match the insertion hole of the second pressure strip 22. Figure 1 As shown, a square metal rod is preferred to facilitate the processing of grooves and holes. In other embodiments, a cylindrical metal rod may also be used.

[0044] Furthermore, there are two first pressure strips 12, located on the edge sides of the two long sides of the first screen 1, and the number and position of the second pressure strips 22 correspond to those of the first pressure strips 12.

[0045] Furthermore, the number of the insertion rods 3 is no less than two.

[0046] By limiting the position of the pressure strip and the number of insertion rods 3, the connection stability of the first screen 1 and the second screen 2 can be further guaranteed.

[0047] Furthermore, the first screen 1 and the second screen 2 are woven from steel wire mesh.

[0048] Plain weave can be used, where a warp thread floats on a weft thread and then lies below the next weft thread, and so on, forming a tight mesh structure. Because the warp and weft threads are woven alternately, the screen is subjected to more uniform force in all directions, the overall structure is stable and not easily deformed, and the screen can maintain a good screening effect during long-term operation.

[0049] Alternatively, a twill weave can be used, where one warp thread floats over two weft threads and then sinks over the next two weft threads, forming a twill mesh structure. Compared to plain weave, twill weave screens have more interlacing between the warp and weft threads, resulting in greater entanglement and friction, thus improving the overall strength and wear resistance of the screen.

[0050] In specific screening operations, the most suitable wire mesh weaving method can be selected based on the properties of the ore, particle size, throughput, and the required screening accuracy.

[0051] Since the first screen 1 bears all the ore material, the first screen 1 is preferably twill woven to improve the overall strength and wear resistance, while the second screen 2 is preferably plain woven to save labor and materials.

[0052] Furthermore, the wire diameter of the first screen 1 is larger than that of the second screen 2, further ensuring its strength.

[0053] In the second embodiment, as Figure 2As shown, a steel plate 4 is installed on the outer side of the first pressure strip 12 and the second pressure strip 22. The steel plate 4 is provided with slots corresponding to the first pressure strip 12 and the second pressure strip 22.

[0054] Steel plate 4 is installed on the outside of the first pressure bar 12 and the second pressure bar 22, mainly to prevent ore from being discharged from both sides of the screen, so that the ore material is discharged from the screen in a defined direction. Manganese steel or alloy steel can be used to ensure sufficient strength and wear resistance.

[0055] The steel plate 4 is provided with slots corresponding to the first pressure strip 12 and the second pressure strip 22. The shape and size of the slots are designed according to the shape of the pressure strips to ensure that the pressure strips can be tightly embedded in the slots. The depth of the slots is generally slightly less than the thickness of the pressure strips, so that the steel plate 4 can fit tightly against the pressure strips after installation, forming a whole.

[0056] Furthermore, the first screen 1 and the second screen 2 are inclined at a certain angle relative to the horizontal plane.

[0057] Furthermore, the tilt angle of the first screen 1 is smaller than the tilt angle of the second screen 2.

[0058] When the first screen 1 and the second screen 2 are inclined at a certain angle relative to the horizontal plane, the ore on the screen surface is subjected not only to vibration but also to a component of gravity along the inclined plane. This component force causes the ore particles to move towards the outlet end of the screen surface, accelerating the flow velocity of the ore on the screen surface and reducing the residence time of the ore on the screen surface, thereby improving screening efficiency. Taking a screen with an inclination angle of 10°-20° as an example, compared with a horizontal screen, its effective screening area utilization rate can be increased by 20%-30%. However, the angle should not be too large to prevent unsatisfactory screening results.

[0059] The tilt angle of the first screen 1 is smaller than that of the second screen 2. This is because the second screen 2 has less ore material than the first screen 1, so it can be screened at a faster rate.

[0060] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0061] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A double-decked ore vibrating screen, characterized in that, include: The first screen has first screen holes distributed on it for the first screening of the ore; The second screen has second screen holes distributed on it. The aperture of the second screen holes is smaller than that of the first screen holes. It is used for a second screening of the ore. The second screen and the first screen are connected at intervals.

2. The dual-deck ore vibrating screen of claim 1, wherein, The second screen and the first screen are connected at an interval as follows: The first screen has a first pressure strip on its edge side, and a groove is provided on the first pressure strip, in which a rod is fixedly connected; The second screen has a second pressure strip on its edge side, and the second pressure strip has an insertion hole, into which the insertion rod is inserted.

3. The dual-deck ore vibrating screen of claim 2, wherein, The first pressure bar has two bars, which are located on the edge sides of the two long sides of the first screen. The number and position of the second pressure bar correspond to those of the first pressure bar.

4. The dual-deck ore vibrating screen of claim 3, wherein, The number of the insertion rods shall be no less than two.

5. The dual-deck ore vibrating screen of claim 4, wherein, The first and second screens are made of wire mesh using plain or twill weave.

6. The dual-deck ore vibrating screen of claim 5, wherein, The wire diameter of the first screen is larger than that of the second screen.

7. The double-layer ore vibrating screen according to claim 6, characterized in that, Steel plates are installed on the outer sides of the first and second pressure strips.

8. The dual-deck ore vibrating screen of claim 7, wherein, The steel plate is provided with slots corresponding to the first pressure strip and the second pressure strip.

9. The dual-deck ore vibrating screen of claim 8, wherein, The first screen and the second screen are inclined at a certain angle relative to the horizontal plane.

10. The dual-deck ore vibrating screen of claim 9, wherein, The tilt angle of the first screen is smaller than that of the second screen.

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