A fixed screen structure of a shallow slot sorting machine

Abstract

The present application relates to the technical field of fixed screen of shallow slot sorting machine, and specifically provides a fixed screen structure of shallow slot sorting machine, which comprises a sorting machine body, a fixed screen for medium removal is assembled at the outlet position of the sorting machine body, and a high-pressure water spraying mechanism for cooperating with the medium removal is assembled above the fixed screen; the fixed screen is divided into several areas by setting a transverse screen and a longitudinal screen, each area is sequentially isolated by an isolation assembly, and the area is cleaned by high-pressure water flushing; at the same time, the longitudinal screen moves away from the transverse screen, so that the medium agglomerates are separated, and the high-pressure water flushing is more convenient; when the area is cleaned, the same operation is sequentially performed on the subsequent area, and the area is cleaned and processed respectively, which not only can effectively accelerate the cleaning efficiency and indirectly improve the medium removal efficiency, but also can realize uninterrupted medium removal during cleaning, and ensure the overall medium removal efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fixed screen of shallow slot sorting machine, and particularly discloses a fixed screen structure of shallow slot sorting machine. BACKGROUND

[0002] The shallow slot sorting machine is a core equipment for sorting lump coal (or large particle material) in the coal and mineral processing industry, coal blocks are screened out of gangue, and separation is realized according to density in a heavy medium suspension by using the Archimedes buoyancy principle. The fixed screen is a very important part in the shallow slot sorting machine. The function of the fixed screen is to separate more than 70% of qualified medium from solids instantly by using gravity when the material enters the machine, and the qualified medium is directly returned to the circulating system. The fixed screen is usually installed at the inlet end or the outlet end. The fixed screen at the outlet end is called a medium removal screen, and the purpose of the fixed screen is to remove medium.

[0003] Due to the mixing of medium and clay on the surface of gangue, especially after mixing with water, the viscosity will be stronger. However, most of the current fixed screens are of an integral structure. Gangue produces wear on the surface of the fixed screen for a long time, and the entire fixed screen structure needs to be replaced when it is replaced. The surface of the fixed screen is very easy to block. Due to the reason of high viscosity, a high-pressure water gun and a cleaning brush need to be used for cleaning at the same time. Cleaning is very time-consuming, which greatly affects the medium removal efficiency. The machine also needs to be frequently stopped for processing, which seriously affects the normal operation of the medium removal operation and also greatly affects the medium removal efficiency.

[0004] Therefore, there is an urgent need for a fixed screen structure of a shallow slot sorting machine with a longer service life, higher cleaning efficiency and higher medium removal efficiency. SUMMARY

[0005] In order to solve the above problems, the present application provides a fixed screen structure of a shallow slot sorting machine to solve the problems mentioned in the background.

[0006] In order to achieve the above object, the present application adopts the following technical scheme: A fixed screen structure of a shallow slot sorting machine, comprising a sorting machine body, a fixed screen for medium removal is assembled at the outlet position of the sorting machine body, and a high-pressure water spraying mechanism for cooperating with the medium removal is assembled above the fixed screen; the fixed screen comprises a plurality of transverse screens for mainly supporting the gangue, longitudinal screens for cooperating with the transverse screens to remove the medium are assembled below the transverse screens, the transverse screens and the longitudinal screens both comprise two isolation rods for separating the gangue, a plurality of screen bars are fixedly installed at equal intervals between the two isolation rods, mounting frames for mounting and connecting the transverse screens and the longitudinal screens are assembled at both sides of the fixed screen, and a push-moving assembly for driving the longitudinal screens to move and fit the transverse screens is assembled in the mounting frames; isolation assemblies for respectively isolating each transverse screen are assembled above the fixed screen; when the fixed screen needs to be cleaned, the isolation assembly at the corresponding position of the transverse screen isolates the transverse screen, so that the gangue falls onto the transverse screen above, the longitudinal screen below the transverse screen at the position is far away, the high-pressure water spraying mechanism above sprays water for cleaning, and the remaining transverse screens are sequentially cleaned according to the above steps after the cleaning is completed.

[0007] Preferably, the push-moving assembly comprises inclined connecting plates fixedly installed on the surface of the isolation rod of the longitudinal screen, an inclined movable supporting block is attached to the lower surface of each inclined connecting plate, the two inclined connecting plates are symmetrically placed, and the supporting block is installed in the mounting frame.

[0008] Preferably, a screw rod capable of rotating is installed in the mounting frame, one end of the screw rod is screw-installed in the inside of the supporting block, a guide rod for guiding the movement of the supporting block is fixedly installed in the inside of the mounting frame, and a motor is installed in the inside of the mounting frame for driving the rotation of the screw rod.

[0009] Preferably, the end of the corresponding isolation rod of the transverse screen is assembled with a triangular guide block.

[0010] Preferably, the isolation assembly comprises a sliding rail frame movably installed in the inside of the sorting machine body, an electric sliding block is slidably installed in the inside of the sliding rail frame, an electric telescopic rod one is fixedly installed on the surface of the electric sliding block, a triangular guide plate one is assembled at the end of the telescopic rod one, and the guide plate one is used for abutting against the surface of the guide block.

[0011] Preferably, the two side plates of the guide plate one are parallel to the two side surfaces of the guide block.

[0012] Preferably, the isolation assembly comprises two symmetrically arranged inclined guide plates two, an electric telescopic rod two is fixedly installed on the surface of the guide plate two, and the telescopic rod two is fixedly installed in the inside of the sliding rail frame.

[0013] Preferably, the screen bar of the transverse screen is arranged in a U shape, the screen bar of the longitudinal screen is arranged in an inverted U shape, and the screen bar of the transverse screen is attached to the surface of the screen bar of the longitudinal screen.

[0014] Preferably, the crosswise screen has a shorter length than the length of the lengthwise screen.

[0015] The technical scheme has the following advantages or beneficial effects: 1. The shallow groove sorting machine fixed screen structure provided by the application divides the fixed screen into several areas by arranging the crosswise screen and the lengthwise screen, and uses the isolation assembly to isolate each area in sequence, and performs high-pressure water flushing and cleaning on the area, while the lengthwise screen moves away from the crosswise screen to separate the bunched medium, which facilitates the high-pressure water flushing, and when the area is cleaned, the subsequent area is cleaned in the same way, which not only effectively speeds up the cleaning efficiency and indirectly improves the medium removal efficiency, but also realizes uninterrupted medium removal during cleaning, thereby ensuring the overall medium removal efficiency.

[0016] 2. The shallow groove sorting machine fixed screen structure provided by the application has a short crosswise screen, which has a small weight and a small number of defect connection points on the surface, so that the possibility of breakage is small, and the stable support force can be ensured, and the material needs to be selected as wear-resistant material to ensure the service life. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application and its features, shapes and advantages will become more apparent from the following detailed description of non-limiting embodiments, with reference to the accompanying drawings. The same reference signs indicate the same parts throughout the drawings, and the drawings are not necessarily drawn to scale, but the emphasis is on showing the main idea of the present application.

[0018] Figure 1 is a perspective structural schematic view of the shallow groove sorting machine fixed screen structure provided by the application.

[0019] Figure 2 is a perspective structural schematic view of the cooperation of the guide plate one and the fixed screen.

[0020] Figure 3 is a perspective structural schematic view of the cooperation of the guide plate two and the fixed screen.

[0021] Figure 4 is a perspective structural schematic view of the slide rail frame.

[0022] Figure 5 is a perspective structural schematic view of the fixed screen.

[0023] Figure 6 is a perspective structural schematic view of the fixed screen from the bottom.

[0024] Figure 7 is a perspective structural schematic view of the cooperation of the crosswise screen and the lengthwise screen.

[0025] Figure 8 is a perspective structural schematic view of the installation frame position.

[0026] Figure 9 is a schematic diagram of the vertical structure of the longitudinal screen.

[0027] Figure 10 is a schematic diagram of the vertical structure of the transverse screen.

[0028] In the figure: 1, sorting machine body; 2, fixed screen; 21, transverse screen; 22, longitudinal screen; 23, isolation rod; 24, mounting frame; 3, push assembly; 31, inclined plate; 32, support block; 4, threaded rod; 5, guide rod; 6, motor; 7, guide block; 8, isolation assembly; 81, slide rail frame; 82, electric sliding block; 83, telescopic rod one; 84, guide plate one; 85, guide plate two; 86, telescopic rod two. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0031] Figure 1 A kind of gangue is carried out to separate medium at the position of discharge port in the fixed screen structure of shallow slot sorting machine, so that the medium on the surface of gangue can be separated from gangue, and recycling is continued, the fixed screen structure of shallow slot sorting machine includes sorting machine body 1, sorting machine body 1 includes machine groove, scraper conveyor, upflow system, transmission system and medium feeding pipe (not shown in the figure), sorting machine body 1 is the common shallow slot sorting machine of insomnia, therefore, it is not described.

[0032] The outlet position of sorting machine body 1 is equipped with fixed screen 2 for separating medium, fixed screen 2 separates gangue on the surface, and medium falls from fixed screen 2, since the surface of gangue will contain a lot of slime and clay, after mixing with medium (magnetite powder), it will form very difficult to clean hard scale, therefore, the upper portion of fixed screen 2 is equipped with high-pressure water spraying mechanism (not shown in the figure) for cooperating with the use of separating medium, the high-pressure water spraying mechanism is used to clean the bonding medium on the surface of gangue, to ensure that the medium can be smoothly circulated subsequently.

[0033] As Figures 5-7 and Figures 9-10As shown, the fixed screen 2 includes a plurality of transverse screens 21 for mainly supporting the gangue, and a longitudinal screen 22 is arranged below the transverse screen 21 to separate the medium, in this embodiment, the number of transverse screens 21 is five, each transverse screen 21 includes two isolation rods 23 and transverse screen strips, the isolation rods 23 protrude from the surface of the screen strip to divide the area for separating the medium, when the gangue falls on the surface of the fixed screen 2, it will move to different areas respectively, the longitudinal screen 21 includes two isolation rods 23 and longitudinal screen strips, the difference is that the isolation rods 23 of the longitudinal screen 22 mainly play a connecting role.

[0034] It needs to be noted that the length of the screen strip of the transverse screen 22 is less than that of the longitudinal screen 22, since the transverse screen 21 is directly in contact with the gangue, it provides a larger supporting force, since the shorter transverse screen 21 screen strip has a lighter self-weight, the length is short, and the surface has fewer defect connection points, so the possibility of breaking is smaller, which can ensure more stable supporting force, and since the transverse screen 21 needs to be in frictional contact with the gangue for a long time, the material thereof needs to be selected to be wear-resistant to ensure the service life, the longitudinal screen 22 and the transverse screen 21 form a cross-shaped isolation screen to separate the medium.

[0035] In order to ensure that the screen strips of the transverse screen 21 and the longitudinal screen 22 are closely attached, the shape of the screen strip of the transverse screen 21 is set to be U-shaped, and the shape of the screen strip of the longitudinal screen 22 is set to be inverted U-shaped, the screen strip of the transverse screen 21 is attached to the surface of the screen strip of the longitudinal screen 22, at this time, there is no isolation rod 23, which reduces the gap between the transverse screen 21 and the longitudinal screen 22, reduces the risk of foreign matter falling between the transverse screen 21 and the longitudinal screen 22, and ensures the service life of the fixed screen 2, at the same time, when a certain transverse screen 21 or longitudinal screen 22 is damaged, it can be individually replaced to reduce the investment cost.

[0036] As shown in Figure 1 , Figures 6-9 As shown, the two sides of the fixed screen 2 are provided with a mounting frame 24 for mounting and connecting the transverse screen 21 and the longitudinal screen 22, the mounting frame 24 is fixed on the surface of the sorting machine body 1, the mounting frame 24 is fixedly mounted and connected by a plurality of bolts, the inside of the mounting frame 24 is provided with a pushing assembly 3 for driving the longitudinal screen 22 to move close to or away from the transverse screen 21, when the surface of the fixed screen 2 is blocked, the pushing assembly 3 drives the longitudinal screen 22 to move away from the transverse screen 21, at this time, a larger gap is generated between the surfaces of the transverse screen 21 and the longitudinal screen 22, the medium clumps adhered to the surfaces of the transverse screen 21 and the longitudinal screen 22 are loose, and the flushing of the high-pressure water gun can quickly remove the medium clumps on the surface of the fixed screen 2, facilitating subsequent medium separation treatment.

[0037] The pushing assembly 3 includes a slanted plate 31 fixedly installed on the surface of the isolation rod 23 of the longitudinal screen 22. The slanted plate 31 and the isolation rod 23 are integrally formed, which can better ensure the firmness of the slanted plate 31 and the isolation rod 23. The lower surface of each slanted plate 31 is attached to an inclined, movable support block 32. The upper surface of the support block 32 is inclined and attached to the lower surface of the slanted plate 31. The two slanted plates 31 are placed symmetrically. Similarly, the two support blocks 32 are also placed symmetrically. The support blocks 32 are installed inside the mounting frame 24. The mounting frame 24 is equipped with a rotatable threaded rod 4. The end thread is installed inside the support block 32. Each support block 32 is equipped with a corresponding threaded rod 4. The mounting frame 24 is fixedly installed with a guide rod 5 for guiding the movement of the support block 32. Each support block 32 has two guide rods 5, which are located on both sides of the threaded rod 4. The mounting frame 24 is equipped with a motor 6 to drive the rotation of the threaded rod 4. The motor 6 is fixedly installed inside the mounting frame 24 through a motor mount (not shown in the figure). The threaded rod 4 is installed inside the mounting frame 24 through a mounting bracket to ensure that the threaded rod 4 can rotate stably. The guide rod 5 is fixed inside the mounting frame 24.

[0038] by Figure 9 For example, when the surface of the fixed screen 2 needs to be cleaned, the motor 6 starts and drives the corresponding threaded rod 4 to rotate. At this time, the two support blocks 32 move closer to each other, and the inclined plate 31 and the longitudinal screen 22 will fall due to their own gravity and separate from the transverse screen 21. At this time, with a large amount of high-pressure water, the media agglomerates can be cleaned more easily and quickly. At the same time, the two support blocks 32 can also move in the same direction, thereby indirectly driving the longitudinal screen 22 to move in the same direction, so that the longitudinal screen 22 also generates other movement paths, which makes it easier to separate and clean the media agglomerates, thus ensuring better desizing effect and better cleaning effect.

[0039] like Figures 1-4 As shown, an isolation component 8 is installed above the fixed screen 2 to isolate each transverse screen 21. When the surface of one transverse screen 21 needs to be cleaned, the isolation component 8 is used to isolate the area. At this time, the gangue will fall onto the surface of other transverse screens 21, and the fixed screen 2 at that position can be cleaned in time. However, it will not affect the normal desliming process of other areas. After the area is cleaned, the isolation component 8 moves to the next area that needs to be cleaned for isolation. Other areas can still be processed normally for desliming, thereby achieving cleaning of the fixed screen 2 without stopping the desliming process and indirectly improving the desliming efficiency.

[0040] The end of each transverse screen 21 corresponding to the isolation rod 23 is equipped with a triangular guide block 7, which is distinguished by the fact that the edge position guide block 7 is a right triangle, and the middle position guide block 7 is an isosceles triangle. When the gangue falls onto the surface of the fixed screen 2, it will enter the upper surface of the transverse screen 21 along the inclined surface of the guide block 7.

[0041] The isolation assembly 8 includes a sliding rail frame 81 movably mounted inside the sorting machine body 1, and the sliding rail frame 81 is provided with sliding blocks on both sides. The inner walls of the sorting machine body 1 are provided with sliding grooves (not shown in the figure) for the movement of the sliding blocks. The sliding blocks themselves are powered and can slide along the sliding grooves. The sliding rail frame 81 is slidably mounted with an electric sliding block 82. The electric sliding block 82 is fixedly mounted with an electric telescopic rod I 83 on its surface. The telescopic rod I 83 itself can move longitudinally. The end of the telescopic rod I 83 is equipped with a triangular guide plate I 84, which is used to abut against the surface of the guide block 7. The two sides of the guide plate I 84 are respectively parallel to the two side surfaces of the guide block 7. At this time, the guide plate I 84 is used to isolate the middle area of the fixed screen 2. Two telescopic rods II 86 are fixedly mounted inside the sliding rail frame 81, respectively located at the two end positions of the sliding rail frame 81. The end of the telescopic rod II 86 is fixedly mounted with an inclined guide plate II 85. The two guide plates II 85 are symmetrically arranged.

[0042] The entire cleaning process includes the isolation process of the isolation assembly 8 and the separation process of the transverse screen 21 and the longitudinal screen 22: when the two side positions of the fixed screen 2 need to be cleaned, the telescopic rod II 86 is activated to move downward, driving the guide plate II 85 to move downward and block the corresponding position. At this time, when the gangue falls onto the surface of the fixed screen 2, it will fall onto other areas along the surface of the guide plate II 85. At this time, the corresponding threaded rod 4 is rotated. At this time, the two supporting blocks 32 move closer to each other, and the inclined connecting plate 31 and the longitudinal screen 22 will fall due to their own gravity, and separate from the transverse screen 21. In combination with a large amount of high-pressure water, the medium agglomerates can be more easily and quickly cleaned. After cleaning is completed, the two supporting blocks 32 move closer to each other, lifting the longitudinal screen 22 to fit the transverse screen 21. Then the telescopic rod II 86 drives the guide plate II 85 to move upward, and the telescopic rod I 83 drives the guide plate I 84 to move downward and block the corresponding area. The area is subjected to the same cleaning process. Then the telescopic rod I 83 drives the guide plate I 84 to move upward, and the electric sliding block 82 drives the guide plate I 84 to translate to other areas until the cleaning is completely finished. The telescopic rod I 83 drives the guide plate I 84 to move upward, and the sliding rail frame 81 moves away from the fixed screen 2 position along the sliding groove.

[0043] It needs to be particularly pointed out that, compared with the scheme of the present application, although the prior art divides the traditional fixed screen 2 into two parts of the transverse screen 21 and the longitudinal screen 22, divides the fixed screen 2 into different areas, and simultaneously increases the isolation assembly 8, all are conventional ordinary mechanical structures, and there is no any high-cost precision component, so the cost of increasing the above structure is low, and after increasing once, it can be used all the time, in the scheme, the shorter transverse screen 21 is arranged to increase the overall service life and prolong the use time, in the cleaning process, the cleaning speed can be improved, and at the same time, the medium can be removed, so the cost of increasing the above structure can be completely ignored, and the above technical scheme of the present application is a specific improvement based on the above prior art condition and solving the technical problem.

[0044] In the description of the present application, it needs to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "connection", "installation", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0046] The preferred embodiments of the present application are described above. It needs to be understood that the present application is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood as being implemented in the ordinary way in the art; any person skilled in the art can make many possible changes and modifications, or modify equivalent embodiments without departing from the technical scheme of the present application, which does not affect the essential content of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical scheme of the present application, still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A fixed screen structure for a shallow trough separator, characterized in that: The system includes a sorting machine body, with a fixed screen for desliming installed at the outlet of the sorting machine body, and a high-pressure water spraying mechanism for use in conjunction with desliming installed above the fixed screen. The fixed screen includes multiple transverse screens for providing primary support for the gangue. Below the transverse screens are longitudinal screens that work together to remove the medium. Both the transverse and longitudinal screens include two isolation rods for separating the gangue. Multiple screen bars are fixedly installed at equal intervals between the two isolation rods. The fixed screen is equipped with mounting frames on both sides for connecting the transverse and longitudinal screens. Inside the mounting frames are push-moving components for driving the longitudinal screen to move and fit against the transverse screen. An isolation assembly for isolating each transverse screen is mounted above the fixed screen. When the fixed screen needs to be cleaned, the isolation component at the corresponding position of the transverse screen will isolate the transverse screen, so that the gangue falls above other transverse screens. The longitudinal screen below the transverse screen at this position will move away, and the high-pressure water spraying mechanism above it will spray water to clean it. After cleaning, the remaining transverse screens will be cleaned in the same way. The pushing assembly includes a slanted plate fixedly installed on the surface of the isolation rod of the longitudinal screen. The lower surface of each slanted plate is fitted with an inclined, movable support block. The two slanted plates are placed symmetrically, and the support block is installed inside the mounting frame. The mounting frame contains a rotatable threaded rod, one end of which is threaded into the support block. The mounting frame also contains a guide rod for guiding the movement of the support block. A motor is installed inside the mounting frame to drive the rotation of the threaded rod. The end of the isolation rod corresponding to the transverse screen is equipped with a triangular guide block; The isolation assembly includes a slide rail frame that is movably installed inside the sorting machine body. An electric slider is slidably installed inside the slide rail frame. An electric telescopic rod is fixedly installed on the surface of the electric slider. A triangular guide plate is fitted to the end of the telescopic rod and is used to abut against the surface of the guide block. The two side plates of the guide plate are parallel to the two sides of the guide block, respectively.

2. The fixed screen structure of a shallow trough separator according to claim 1, characterized in that: The isolation assembly includes two symmetrically arranged inclined guide plates, and an electrically operated telescopic rod is fixedly installed on the surface of the guide plates. The telescopic rod is fixedly installed inside the slide rail frame.

3. The fixed screen structure for a shallow trough separator according to claim 1, characterized in that: The transverse screen has U-shaped sieve bars, and the longitudinal screen has inverted U-shaped sieve bars. The transverse screen bars are attached to the surface of the longitudinal screen bars.

4. The fixed screen structure of a shallow trough separator according to claim 1, characterized in that: The length of the screen bars in the transverse screen is shorter than that in the longitudinal screen.

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