Inclined multi-stage linkage crossed roll screen

Abstract

The utility model relates to the technical field of roll shaft screens, in particular to an inclined multi-stage linkage cross type roll shaft screen which comprises a shell, the top of the shell is arranged in an inclined mode, and a feeding port and a discharging port are formed in the shell. The multiple roll shafts are arranged in the shell in parallel at intervals and connected through the connecting assemblies, one roll shaft is driven by the first motor to rotate, the multiple roll shafts synchronously rotate under the action of the connecting assemblies, the roll shafts are parallel to the top of the shell, the multiple sieve trays are fixedly arranged on the roll shafts at intervals in parallel, and the sieve trays on every two adjacent roll shafts are arranged in a staggered mode; the cleaning assemblies are evenly distributed between every two screening trays and used for cleaning impurities on the roller shaft between the two screening trays, each cleaning assembly comprises a vertical plate and is fixedly arranged below the roller shaft between the two screening trays, the supporting plate is fixedly arranged on the vertical plate, and the tool bit is detachably arranged at the upper end of the supporting plate and used for scraping the impurities on the roller shaft; the roller shaft scraping device has the advantages of scraping impurities on the roller shaft and the like.

Description

An inclined multi-stage linkage cross roller screen Technical Field

[0001] This utility model relates to the field of roller screen technology, specifically to an inclined multi-stage linkage cross roller screen. Background Technology

[0002] In today's industrial field, roller screens are an indispensable screening and sorting equipment, widely used in many industries such as coal, metallurgy, chemical industry, and building materials, undertaking the key task of coarse and fine separation of various ores such as coal, coke, ore, and limestone.

[0003] Traditional roller screens typically consist of multiple sets of parallel rollers with screen discs staggered on them. They are driven by a motor and a reducer to rotate in the same direction as the material flow. During operation, material falls onto the screen surface from the inlet and rolls forward under the action of the rotating rollers and screen discs. Material smaller than the screen openings passes through and falls, while material larger than the openings is discharged from the outlet.

[0004] However, roller screens generally operate in harsh environments, often outdoors or in dusty locations. Under such conditions, the equipment faces challenges not only in environmental protection and lubrication but also in the increasingly prominent issue of roller cleaning. Due to the sticky or moist nature of the materials, a large amount of impurities easily adheres to the rollers between the screen discs during the screening process. Currently, the industry lacks effective solutions to this problem. The continuous accumulation of impurities on the rollers causes the gap between the screen discs to gradually narrow, severely affecting screening efficiency and accuracy, making it difficult to guarantee product quality. The accumulation of impurities also increases the operating burden on the rollers, accelerates wear, shortens their service life, and increases equipment maintenance costs and downtime. Summary of the Invention

[0005] In view of this, the present invention provides an inclined multi-stage linkage cross roller screen, which aims to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an inclined multi-stage linkage cross-type roller screen, comprising:

[0007] The housing has an inclined top and is provided with an inlet and an outlet.

[0008] Multiple rollers are arranged parallel and spaced apart inside the housing and connected by a connecting assembly. One roller rotates under the drive of a first motor, and the multiple rollers rotate synchronously under the action of the connecting assembly. The roller is parallel to the top of the housing, and multiple screen discs are fixed on the roller at intervals and parallel to each other. The screen discs on adjacent rollers are staggered.

[0009] Multiple cleaning components, evenly distributed between every two screen discs, are used to clean impurities on the roller between the two screen discs. The cleaning components include...

[0010] The vertical plate is fixed below the roller shaft between the two screen discs.

[0011] Support plate, fixed on the vertical plate,

[0012] A detachable blade is mounted on the upper end of the support plate, and the blade is used to scrape off impurities from the roller shaft.

[0013] A further improvement of this utility model is that the connecting component is disposed inside the protective cover on the outside of the housing.

[0014] A further improvement of this utility model is that the end of the roller shaft is connected to the housing shaft and extends through the protective cover, and the connecting assembly includes:

[0015] Multiple sprockets are fixedly mounted on the ends of multiple roller shafts, wherein the first and last roller shaft ends are each fixedly mounted with one sprocket, and the remaining roller shaft ends are each provided with two sprockets in parallel.

[0016] Multiple chains, starting from the first roller, are sequentially fitted onto the corresponding sprockets.

[0017] A further improvement of this utility model is that a self-lubricating system is provided inside the protective cover above the chain.

[0018] A further improvement of this utility model is that a rotation monitoring device is provided at each of the multiple chains.

[0019] A further improvement of this utility model is that a protective liner is provided on the housing at the feed inlet.

[0020] A further improvement of this utility model is that the top of the housing is provided with an openable inspection door.

[0021] A further improvement of this utility model is that the cutter head is connected to the support plate by bolts.

[0022] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0023] This invention provides an inclined, multi-stage, interconnected, cross-type roller screen, which significantly reduces equipment maintenance costs through a cleaning component. The cleaning component is evenly distributed between the screen discs, stably supported by vertical plates, precisely positioned by support plates, and the detachable blades can promptly scrape away impurities from the rollers. This prevents impurity accumulation from reducing the gap between the screen discs, ensuring stable screening performance, effectively reducing the operating load on the rollers, extending their service life, and decreasing replacement frequency.

[0024] In this invention, the top of the shell is inclined, with the rollers parallel to it. Adjacent rollers and screen discs are staggered, promoting more uniform material dispersion on the screen surface. Under the combined effect of gravity and the rotation of the screen discs, the material fully contacts the screen openings. Material smaller than the openings passes through efficiently, while material larger than the openings is smoothly discharged to the outlet, significantly improving screening accuracy and ensuring stable and reliable product quality. Multiple rollers rotate synchronously under the drive of the first motor and connecting components. This multi-stage linkage mode greatly accelerates the material screening speed, shortens the material's residence time on the screen surface, effectively improves screening efficiency, and meets the high-efficiency requirements of large-scale industrial production. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 is a schematic diagram of the overall structure of the roller screen of this utility model;

[0027] Figure 2 is a schematic diagram of the roller structure of the roller screen of this utility model;

[0028] Figure 3 is a schematic diagram of the connection assembly of the roller screen of this utility model;

[0029] Figure 4 is a schematic diagram of the cleaning assembly of the roller screen of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10-Shell, 101-Inlet, 102-Outlet, 11-Roller, 111-First motor, 112-Screen plate, 12-Guard cover, 13-Self-lubricating system, 14-Rotation monitoring device, 15-Protective liner, 16-Inspection door, 23-Cutter head, 31-Sprocket, 32-Chain. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, in the following description, specific details such as particular system structures and technologies are set forth for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art should understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details hindering the description of the present invention.

[0033] The present invention provides an inclined multi-stage linkage cross roller screen, which, as can be seen from Figures 1 to 4 in the specification, mainly includes the following parts or components: shell 10, roller 11, cleaning assembly, vertical plate, support plate, and cutter head 23.

[0034] In this invention, the top of the housing 10 is inclined, and the housing 10 is provided with an inlet 101 and an outlet 102. Multiple rollers 11 are arranged parallel and spaced apart within the housing 10 and connected by a connecting assembly. One roller 11 rotates under the drive of a first motor 111, and the multiple rollers 11 rotate synchronously under the action of the connecting assembly. The rollers 11 are parallel to the top of the housing 10, and multiple screens 112 are fixedly fixed on the rollers 11 at intervals and in parallel. The screens 112 on adjacent rollers 11 are staggered. Multiple cleaning components are evenly distributed between every two screens 112 for cleaning impurities on the rollers 11 between the two screens 112. Each cleaning component includes a vertical plate (not shown in the figure) fixed below the roller 11 between the two screens 112, a support plate (not shown in the figure) fixed on the vertical plate, and a detachable cutter head 23 on the upper end of the support plate. The cutter head 23 is used to scrape off impurities on the rollers 11. The cutter head 23 is connected to the support plate by bolts.

[0035] The first motor 111 starts, providing power to one of the rollers 11, causing it to rotate. Under the action of the connecting assembly, multiple rollers 11 rotate synchronously. Since the rollers 11 are parallel to the top of the housing 10, and the multiple rollers 11 are arranged parallel and spaced apart within the housing 10, all rollers 11 rotate at the same speed and direction. Material enters the roller 11 screen from the feed inlet 101 at the top of the housing 10. Under gravity, the material falls onto the rotating rollers 11 and the screen discs 112. Due to the rotation of the rollers 11 and the staggered arrangement of the screen discs 112 on adjacent rollers 11, the material moves towards the discharge outlet 102 while continuously tumbling on the screen surface under the influence of the screen discs 112. During this process, material smaller than the screen openings falls through the screen openings under the action of gravity and the centrifugal force generated by the rotation of the screen discs 112, while material larger than the screen openings continues to move forward on the screen surface and is eventually discharged from the discharge outlet 102, thus achieving material screening.

[0036] During the material screening process of the rotating roller 11, the cleaning component also works synchronously. As the roller 11 rotates, the cutter head 23 contacts the surface of the roller 11, scraping off the impurities attached to the roller 11, preventing impurities from accumulating on the roller 11, ensuring that the gap between the screen discs 112 remains stable, and thus ensuring screening efficiency and accuracy.

[0037] Among them, the roller 11 adopts a high-strength solid forged alloy "double-sided milled flat shaft" (a type of shaft part that has been milled to form a flat structure on both sides of the shaft), replacing the flat key connection method of the screen plate 112, thereby optimizing the processing technology of the screen plate 112 and related parts. The screen plate 112 is made of NM wear-resistant steel plate. Due to its excellent wear resistance and high strength, it effectively improves the service life of the screen plate 112. It is processed by a high-precision laser cutting machine, with a short processing cycle and low manufacturing cost. The shape of the screen plate 112 is easy to adjust and the screen plate 112 is easy to replace quickly, which is conducive to meeting the diversified production needs.

[0038] Specifically, the cutter head 23 undergoes surface heat treatment, resulting in high hardness, wear resistance, and service life. Replacement and maintenance are economical and convenient. It can effectively clean the sticky materials on the screen plate 112 in real time, prevent screen hole blockage, and ensure production efficiency.

[0039] Specifically, the roller 11 employs a packing seal structure at both ends. The packing, woven from polytetrafluoroethylene fibers, exhibits excellent properties such as corrosion resistance, wear resistance, low friction, and self-lubrication, achieving superior sealing performance in low-speed applications. It is known that the packing seal structure is existing technology and will not be elaborated upon further.

[0040] Specifically, the multiple rollers 11 can be divided into multiple groups, and each group will have a first motor 111 and connecting components.

[0041] As one embodiment, as shown in Figures 1 to 3 of the specification, the connecting assembly is located inside the protective cover 12 outside the housing 10. The end of the roller shaft 11 is connected to the rotating shaft of the housing 10 and extends into the protective cover 12. The connecting assembly includes multiple sprockets 31, which are fixed on the ends of the multiple roller shafts 11. The first and last roller shafts 11 are each fixed with one sprocket 31, and the ends of the remaining roller shafts 11 are each provided with two sprockets 31 in parallel. Multiple chains 32 are sequentially sleeved on the corresponding sprockets 31, starting from the first roller shaft 11.

[0042] After the first motor 111 starts, its output shaft drives the connected roller 11 to rotate. A sprocket 31 is fixed to the end of this roller 11, and the sprocket 31 rotates together with the roller 11, thus providing initial power to the entire connecting assembly. The chain 32, sleeved on the sprocket 31 at the end of the roller 11, begins to move under the drive of the sprocket 31. As the chain 32 moves, it drives each connected sprocket 31 to rotate. For rollers 11 with two sprockets 31 at their ends, the two sprockets 31 rotate synchronously under the drive of the chain 32, thereby driving the roller 11 to rotate. In this way, power is transmitted sequentially to each roller 11 through the chain 32, enabling multiple rollers 11 to rotate synchronously under the action of the connecting assembly. The entire connecting assembly is housed within the protective cover 12 outside the housing 10, protecting the connecting assembly from external environmental influences and preventing operators from contacting moving parts, thus improving the safety and reliability of the equipment.

[0043] As one embodiment, as shown in Figure 3 of the specification, a self-lubricating system 13 is provided inside the protective cover 12 above the chain 32.

[0044] Self-lubricating technology already exists, and one such method is employed here. A self-lubricating system 13 generally consists of a lubrication pump, distributor, oil pipes, oil level sensor, and pressure sensor. The lubrication pump stores and delivers lubricating oil, which is then transported to the distributor via oil pipes. The distributor then distributes the oil to various lubrication points in a specific ratio and sequence, such as the nozzles on each chain 32 of the roller 11 screen. The nozzles spray lubricating oil onto the corresponding chain 32 through nozzles. The oil level sensor monitors the oil level in the tank in real time, sending a signal when the level is too low to remind the user to replenish lubricating oil. The pressure sensor monitors the system pressure to ensure stable oil supply pressure; if the pressure is abnormal, it sends feedback to the controller for processing.

[0045] Specifically, all components in this application that require electrical connection to the controller are electrically connected to the controller.

[0046] Specifically, the sprocket 31 and chain 32 are completely enclosed within the protective cover 12 and are lubricated using a self-lubricating system 13, which effectively extends the service life of the chain 32 while avoiding waste and contamination of lubricating oil.

[0047] As one embodiment, as shown in Figure 3 of the specification, a rotation monitoring device 14 is provided at each of the multiple chains 32.

[0048] When the equipment stalls or the chain breaks, it can automatically control the alarm and stop the machine in time to ensure the reliability and safety of the equipment operation.

[0049] There are various types of rotation monitoring devices 14 in the existing technology. The one currently used is Schneider Electric's XCS rotation monitor, which can be used to monitor the rotation status of equipment such as motors, pumps, and conveyors, and can accurately measure the rotation speed. It can also set upper and lower limit thresholds for the rotation speed. When the equipment speed exceeds the set range, or when no rotation signal is detected within a certain period of time, the XCS rotation monitor will quickly trigger an alarm and output a control signal through a relay to stop the equipment.

[0050] As one embodiment, as shown in Figure 1 of the specification, a protective liner 15 is provided on the housing 10 at the feed inlet 101. This avoids wear caused by direct contact between the material and the housing 10.

[0051] As one embodiment, as shown in Figure 1 of the specification, the top of the housing 10 is provided with an openable inspection door 16. This facilitates later maintenance and repair work.

[0052] It should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. An inclined multi-stage linkage cross-type roller screen, characterized in that, include: The housing has an inclined top and is provided with an inlet and an outlet. Multiple rollers are arranged parallel and spaced apart inside the housing and connected by a connecting assembly. One roller rotates under the drive of a first motor, and the multiple rollers rotate synchronously under the action of the connecting assembly. The roller is parallel to the top of the housing. Multiple screen discs are fixedly fixed on the roller at intervals and parallel to each other, and the screen discs on adjacent rollers are staggered. Multiple cleaning components are evenly distributed between every two screen discs for cleaning impurities on the roller between the two screen discs. Each cleaning component includes a vertical plate fixed below the roller between the two screen discs, a support plate fixed on the vertical plate, and a cutter head detachably mounted on the upper end of the support plate. The cutter head is used to scrape off impurities on the roller.

2. The inclined multi-stage linkage cross-type roller screen according to claim 1, characterized in that, The connecting assembly is located inside the protective cover on the outside of the housing.

3. The inclined multi-stage linkage cross-type roller screen according to claim 2, characterized in that, The end of the roller shaft is connected to the housing shaft and extends into the protective cover. The connecting assembly includes: multiple sprockets fixed on the ends of multiple roller shafts, wherein the first and last roller shaft ends are each fixed with one sprocket, and the remaining roller shaft ends are each provided with two sprockets in parallel; and multiple chains, starting from the first roller shaft, are sequentially sleeved on the corresponding sprockets.

4. The inclined multi-stage linkage cross-type roller screen according to claim 3, characterized in that, The protective cover above the chain is equipped with a self-lubricating system.

5. The inclined multi-stage linkage cross-type roller screen according to claim 4, characterized in that, Rotation monitoring devices are installed at multiple points of the chain.

6. The inclined multi-stage linkage cross-type roller screen according to claim 1, characterized in that, The housing at the feed inlet is equipped with a protective liner.

7. An inclined multi-stage linkage cross-type roller screen according to any one of claims 1-6, characterized in that, The top of the housing is equipped with an openable inspection door.

8. The inclined multi-stage linkage cross-type roller screen according to claim 1, characterized in that, The cutter head is connected to the support plate by bolts.

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