Gangue discharging jigger

Abstract

The invention relates to the technical field of raw coal separation, and provides a gangue discharging jigger which comprises a machine body provided with a gangue channel. The discharging wheel is rotationally arranged at a discharging port of the gangue channel, a plurality of discharging plates are distributed on the peripheral wall of the discharging wheel at intervals, a discharging space is formed between every two adjacent discharging plates, a material blocking plate is arranged on the downward side of the discharging port and partially surrounds the lower side of the discharging port, and an auxiliary outlet communicated with the discharging port is formed in the side, opposite to the material blocking plate, of the discharging port. One end of the auxiliary baffle is rotatably arranged on the outer side wall of the side, close to the auxiliary outlet, of the discharging port, and the other end of the auxiliary baffle is used for abutting against the material blocking plate to seal the auxiliary outlet or being away from the material blocking plate and opening the auxiliary outlet after rotating. According to the gangue discharging jigger, through cooperation of the auxiliary baffle and the auxiliary outlet, the function that the size of the discharging port is adjusted adaptively along with gangue discharging is achieved, and the technical problem that in the prior art, a discharging wheel of a jigger is prone to being blocked, and the sorting quality is affected is solved.

Description

Technical Field

[0001] This invention relates to the field of raw coal sorting technology, and more specifically, to a jigging machine for removing coal gangue. Background Technology

[0002] Jigging machines are common equipment in coal preparation. They use vertically moving water flow to separate low-density coal from high-density gangue (or other impurities) in raw coal, thereby improving coal quality and reducing subsequent processing and transportation costs. Under the action of water flow, the material is loosened and suspended. The less dense coal particles, due to greater buoyancy and water flow thrust, will move upward or be suspended at a higher position; the denser gangue, ironware, and other heavy products will settle to the bottom of the screen plate more quickly. The material gradually stratifies according to density, with the upper layer being low-density clean coal (or intermediate products) and the lower layer being high-density gangue and other heavy products. Finally, the material of different densities is discharged separately through the discharge device, completing the separation process. The lower layer of gangue and other materials are mostly discharged through the discharge wheel. However, due to the varying sizes and irregular shapes of the gangue, the discharge wheel is prone to blockage or jamming if it encounters larger gangue or iron objects during the discharge process. Therefore, in existing technologies, before jigging raw coal, grading, inspection, and manual sorting are often added to remove large impurities and unqualified gangue that affect production, and to select high-quality large coal pieces. However, in this pre-treatment stage, due to the limitation of processing capacity, large impurities or unqualified gangue cannot be completely removed, and the gangue discharge wheel of the jig is at high risk of blockage. If the discharge channel is congested, it will affect the stratification of materials above the screen plate and thus affect the sorting quality of raw coal. Summary of the Invention

[0003] To overcome the above-mentioned defects, embodiments of the present invention provide a jigging machine for waste rock removal, which solves the technical problem in the related art that the discharge wheel of the jigging machine is prone to blockage, affecting the sorting quality.

[0004] According to one aspect, at least one embodiment of the present invention provides a jigging machine for waste rock removal, comprising: The body, which has a gangue channel; A discharge wheel is rotatably mounted at the outlet of the gangue channel. Several discharge plates are spaced apart on the periphery of the discharge wheel, and a discharge space is formed between two adjacent discharge plates. A baffle plate is provided on the downward side of the outlet, and the baffle plate partially surrounds the lower side of the outlet. An auxiliary outlet communicating with the outlet is provided on the side opposite to the baffle plate. An auxiliary baffle is provided, one end of which is rotatably disposed on the outer side wall of the discharge port near the auxiliary outlet. The other end of the auxiliary baffle is used to abut against the baffle plate to close the auxiliary outlet or to rotate away from the baffle plate and open the auxiliary outlet.

[0005] For example, in a jigging machine for discharging waste rock provided in at least one embodiment of the present invention, a reset member is connected between the auxiliary baffle and the side wall of the discharge port. The reset member is used to elastically pull the auxiliary baffle so that the auxiliary baffle abuts against the baffle plate.

[0006] For example, in a jigging machine for removing gangue provided in at least one embodiment of the present invention, a sieve plate is provided inside the machine body, one end of the sieve plate is rotatably disposed on the inner wall of the machine body, and the other end extends downward at an incline toward the gangue channel.

[0007] For example, in a jigging machine for discharging gangue provided in at least one embodiment of the present invention, an opening is provided on the side wall of the gangue channel near the auxiliary baffle, and a sealing plate for blocking the opening is connected to the auxiliary baffle. The sealing plate can extend into the gangue channel when the auxiliary baffle opens the opening to guide at least part of the material in the gangue channel to the auxiliary baffle.

[0008] For example, in at least one embodiment of the present invention, a jigging machine for discharging gangue is provided, which further includes an adjustment assembly for adjusting the angle of the screen plate. The adjustment assembly includes a support plate rotatably disposed on the inner wall of the gangue channel. The support plate is located on the side wall opposite to the auxiliary baffle. The other end of the support plate is used to abut against the lower end of the screen plate. The support plate can rotate and push the screen plate to adjust the angle of the screen plate.

[0009] For example, in a jigging machine provided in at least one embodiment of the present invention, the adjustment assembly further includes an adjustment rod disposed on the sealing plate, which can push the support plate to rotate when it rotates with the sealing plate.

[0010] For example, in a jigging machine for discharging gangue provided in at least one embodiment of the present invention, a sealing support strip is provided at the top end of the gangue channel near the screen plate, and the sealing support strip is used to abut against the screen plate.

[0011] For example, in at least one embodiment of the present invention, a jigging machine for removing waste rock is provided, which further includes a limiting component disposed in the machine body. The limiting component includes a limiting rod, a sliding seat and a limiting spring. The sliding seat is slidably disposed on the machine body. The two ends of the limiting rod are respectively hinged to the sealing plate and the sliding seat. The two ends of the limiting spring are respectively connected to the sliding seat and the machine body. The limiting spring is used to push the sliding seat upward so that the sealing plate blocks the opening.

[0012] For example, in a jigging machine provided in at least one embodiment of the present invention, the machine body further includes a raw coal channel spaced apart from the gangue channel and an overflow port located on the side of the raw coal channel away from the gangue channel. The height of the overflow port is higher than the height of the inlet of the raw coal channel, and an overflow net is provided at the overflow port.

[0013] For example, in a jigging machine for discharging waste rock provided in at least one embodiment of the present invention, a buffer channel is provided below the discharge wheel.

[0014] The beneficial effects of this invention are as follows: In this invention, if large pieces of gangue or ironware enter the discharge space, and the size of these large pieces is larger than the gap between the discharge space and the baffle plate, preventing them from moving downwards normally with the discharge wheel, the large pieces of material push against the auxiliary baffle plate, causing it to rotate around the hinge. This causes the free end of the auxiliary baffle plate to move away from the baffle plate, opening the auxiliary outlet. Under the combined action of the rotational thrust of the discharge wheel and its own weight, the large pieces of gangue or ironware are discharged from the auxiliary outlet. After the large pieces of material are discharged, the auxiliary baffle plate rotates in the opposite direction around the hinge under its own weight, and its free end re-abuts against the baffle plate, closing the auxiliary outlet again. The discharge wheel then continues the conventional gangue discharge operation, ensuring continuous operation of the jig while improving the stability of gangue discharge. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a jigging machine for waste rock removal in one embodiment of the present invention; Figure 2 for Figure 1 A partial structural diagram of the jig with added limiting and adjusting components in the embodiment; Figure 3 For Figure 1 A schematic diagram of another angle of the structure of a jigging machine in one embodiment; Figure 4 for Figure 3 A magnified structural diagram at point A in the diagram.

[0017] In the diagram: 100, machine body; 110, gangue channel; 111, inlet; 120, raw coal channel; 121, overflow net; 130, overflow port; 140, buffer channel; 210, discharge wheel; 220, discharge plate; 230, baffle plate; 240, auxiliary outlet; 250, auxiliary baffle; 260, sealing plate; 300, screen plate; 310, sealing support strip; 400, adjusting assembly; 410, support plate; 420, adjusting rod; 500, limiting assembly; 510, limiting rod; 520, sliding seat; 530, limiting spring. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0019] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-4 As shown, a jigging machine for discharging gangue is illustrated in one embodiment of the present invention. It includes a machine body 100, and a gangue channel 110 is provided inside the machine body 100. The gangue channel 110 extends along the height direction of the machine body 100, and its upper end is connected to the sorting area inside the machine body 100 for receiving the gangue that has settled to the lower layer after sorting. The lower end forms a discharge port, which is opened at the lower part of one side of the machine body 100.

[0025] A discharge wheel 210 is positioned at the outlet of the gangue channel 110. The discharge wheel 210 is rotatably connected to the side walls of the machine body 100 corresponding to the outlet via a rotating shaft. The axis of the rotating shaft is horizontal, allowing the discharge wheel 210 to rotate circumferentially around the shaft. Several discharge plates 220 are fixedly connected to the circumferential wall of the discharge wheel 210. The discharge plates 220 extend radially along the discharge wheel 210 and are evenly spaced circumferentially. Adjacent discharge plates 220 and the circumferential wall of the discharge wheel 210 together enclose a discharge space, and each discharge space has the same volume. The volume of the discharge space can also differ when the interval between adjacent discharge plates 220 is inconsistent.

[0026] A baffle plate 230 is provided on the downward side of the discharge port. One end of the baffle plate 230 is fixedly connected to the side wall of the machine body 100 corresponding to the lower side of the discharge port, and the other end extends towards the discharge wheel 210. The outline of the baffle plate 230 is arc-shaped and partially surrounds the lower side of the discharge port. A gap is reserved between the free end of the baffle plate 230 and the outer circumference of the discharge wheel 210. This gap is smaller than the particle size of conventional gangue to prevent conventional gangue from leaking out through the gap. On the opposite side of the baffle plate 230, an auxiliary outlet 240 is provided on the machine body 100 at the position corresponding to the discharge port. The auxiliary outlet 240 is connected to the discharge port of the gangue channel 110. When the size of the gangue or ironware is large and it is difficult to discharge between the two discharge plates 220 during the rotation of the discharge shaft, the auxiliary outlet 240 supplements the size of the discharge space, so that large-sized gangue or ironware can also be discharged smoothly from the gangue channel 110. An auxiliary baffle 250 is positioned at the auxiliary outlet 240. One end of the auxiliary baffle 250 is rotatably connected to the outer wall of the discharge port near the auxiliary outlet 240 via a hinge. The axis of the hinge is arranged horizontally, allowing the auxiliary baffle 250 to rotate around the hinge in a vertical plane. The other end of the auxiliary baffle 250 is a free end. In its initial state, the free end of the auxiliary baffle 250 abuts against the free end of the baffle plate 230, completely covering the auxiliary outlet 240 and closing it. When the auxiliary baffle 250 rotates around the hinge, its free end moves away from the baffle plate 230, and the auxiliary outlet 240 opens. The auxiliary baffle 250 typically rotates away from the discharge port under the influence of large-sized gangue, thus opening the auxiliary outlet 240 without requiring additional external power control.

[0027] In this embodiment, when the jigging machine is working, the raw coal is first separated by density through the sorting mechanism. The low-density clean coal is located in the upper layer, while the high-density gangue settles to the lower layer and enters the gangue channel 110, which is then conveyed downwards to the discharge port. At this time, the auxiliary baffle 250 is in an initial closed state. The discharge wheel 210 is driven to rotate around the shaft by the external drive component. The discharge plate 220 on the periphery of the discharge wheel 210 rotates synchronously with the discharge wheel 210. When the discharge plate 220 rotates to the discharge port of the gangue channel 110, it scrapes the gangue in the discharge port into the discharge space formed by the adjacent discharge plate 220. As the discharge wheel 210 continues to rotate, the discharge space carrying the gangue rotates downwards, and the gangue is discharged from the lower side of the discharge port, completing the conventional gangue discharge. During the rotation of the baffle plate 230, the baffle plate 230 is supported in the area below the discharge shaft and does not affect the rotation of the discharge plate 220, thereby improving the working stability of the discharge wheel 210.

[0028] During the rotation of the discharge wheel 210, if large pieces of gangue or ironware enter the discharge space, and the size of these large pieces is larger than the gap between the discharge space and the baffle plate 230, they cannot move downwards normally with the discharge wheel 210. In this case, the large pieces of material push against the auxiliary baffle plate 250, causing it to rotate around the hinge, so that the free end of the auxiliary baffle plate 250 moves away from the baffle plate 230, and the auxiliary outlet 240 opens accordingly. Under the combined action of the rotational thrust of the discharge wheel 210 and its own weight, the large pieces of gangue or ironware are discharged from the auxiliary outlet 240. After the large pieces of material are discharged, the auxiliary baffle plate 250 rotates in the opposite direction around the hinge under its own weight, and its free end re-abuts against the baffle plate 230, the auxiliary outlet 240 closes again, and the discharge wheel 210 continues to perform the conventional gangue discharge operation.

[0029] In this embodiment, the gangue channel 110 of the machine body 100 provides a directional conveying path for the stratified gangue. The discharge wheel 210 achieves stable rotation through a rotating shaft, and the discharge space formed by the discharge plate 220 on its peripheral wall can quantitatively accommodate gangue. The cooperation between the auxiliary outlet 240 and the auxiliary baffle 250 solves the problem of blockage and jamming at the discharge port. The auxiliary outlet 240 and the baffle 230 are arranged opposite to each other. The auxiliary baffle 250 opens and closes the auxiliary outlet 240 by rotating. When large pieces of gangue or ironware enter the discharge space, the auxiliary outlet 240 can be opened by the pushing force of the material itself on the discharge plate 220 without stopping the machine, so that impurities can be discharged quickly. This fundamentally reduces the risk of blockage or jamming of the discharge wheel 210, ensures the continuous operation of the jig, and avoids the decline in production efficiency caused by shutdown for cleaning. The auxiliary baffle 250 is rotatably connected to the outer wall of the discharge port via a hinge and can be reset by its own gravity, eliminating the need for complex drive and control components. This simplifies the overall structure of the equipment and reduces manufacturing costs. Furthermore, due to its simple structure, the failure probability of the auxiliary baffle 250 is significantly reduced, decreasing maintenance frequency and costs, and improving operational reliability. In existing technologies, blockage of the gangue channel 110 can lead to disordered material stratification above the screen plate 300, affecting sorting quality. This solution maintains the unobstructed flow of the gangue channel 110 through the emergency discharge function of the auxiliary outlet 240, ensuring the continuous discharge of stratified gangue and preventing its accumulation within the machine body 100. This ensures that the material above the screen plate 300 is always properly stratified according to density, guaranteeing stable raw coal sorting quality and reducing the risk of clean coal quality fluctuations caused by blockages.

[0030] Furthermore, a reset component can be connected between the auxiliary baffle 250 and the side wall of the discharge port. The reset component can be a tension spring, with one end of the spring fixedly connected to the outer side wall of the auxiliary baffle 250 near the rotating end via a hook, and the other end fixedly connected to the outer side wall of the corresponding discharge port of the machine body 100 near the rotating end of the auxiliary baffle 250 via a hook. When the tension spring is in its natural state, the free end of the auxiliary baffle 250 abuts against the baffle plate 230, and the auxiliary outlet 240 remains closed; when a large piece of gangue pushes the auxiliary baffle 250 to rotate around the hinge, the tension spring is stretched to generate elastic tension; when the large piece of gangue is discharged from the auxiliary outlet 240, the elastic tension of the spring pulls the auxiliary baffle 250 to rotate in the opposite direction until the auxiliary baffle 250 abuts against the baffle plate 230 again, and the auxiliary outlet 240 returns to its closed state.

[0031] In this embodiment, the reset component works in conjunction with the auxiliary baffle 250, utilizing elastic tension to ensure the auxiliary baffle 250 stably closes the auxiliary outlet 240 under normal conditions, preventing leakage of conventional gangue. Simultaneously, the elastic force of the reset component can quickly pull the auxiliary baffle 250 back to its original position, shortening the opening time of the auxiliary outlet 240, reducing the risk of gangue accumulation around the discharge wheel 210, and further ensuring continuous discharge. Furthermore, the reset component has a simple structure, is easy to install, requires no additional power source, and achieves its function solely through mechanical elasticity, reducing equipment energy consumption and the probability of failure. Compared to existing reset structures requiring electric control, this significantly improves operational reliability.

[0032] Furthermore, a screen plate 300 is installed inside the machine body 100. One end of the screen plate 300 is rotatably connected to the inner wall of the machine body 100 away from the gangue channel 110, and the other end extends downwards towards the gangue channel 110, with its lower end extending to the upper entrance of the gangue channel 110, forming a gangue guiding slope. A sealing support strip 310 is installed at the top side of the gangue channel 110 near the screen plate 300. The sealing support strip 310 extends along the width direction of the gangue channel 110, with one end fixedly connected to the side wall of the gangue channel 110 and the other end extending towards the lower surface of the screen plate 300. When the screen plate 300 is in the initial inclined state, the free end of the sealing support strip 310 completely abuts against the lower surface of the screen plate 300, sealing the gap between the screen plate 300 and the side wall of the gangue channel 110.

[0033] In this embodiment, the screen plate 300 has an adjustable tilt angle via a rotating connection. The tilt angle can be adjusted according to the gangue content in the raw coal. When the gangue content is high, the tilt angle is increased to accelerate the conveying speed of gangue to the gangue channel 110; when the gangue content is low, the tilt angle is decreased to prevent clean coal from mixing into the channel with the gangue, thus solving the problem of poor adaptability of the fixed screen plate 300. Simultaneously, the sealing support strip 310 abuts against the screen plate 300 to seal the gap, preventing gangue from leaking into the space below the screen plate 300. Furthermore, the sealing support strip 310 also provides support for the screen plate 300, preventing deformation due to long-term material loading and extending the service life of the screen plate 300.

[0034] Furthermore, the side wall of the gangue channel 110 near the auxiliary baffle 250 has an opening 111. The opening 111 extends along the height direction of the gangue channel 110, with its upper end connected to the upper inlet of the gangue channel 110 and its lower end extending to a position near the discharge port. A sealing plate 260 is fixedly connected to the side of the auxiliary baffle 250 away from the gangue channel 110. The shape of the sealing plate 260 is adapted to the shape of the opening 111. When the auxiliary baffle 250 closes the auxiliary outlet 240, the sealing plate 260 completely closes the opening 111, thus blocking the opening 111. When the auxiliary baffle 250 rotates to open the auxiliary outlet 240, the sealing plate 260 rotates synchronously with the auxiliary baffle 250, disengages from the opening 111, and extends into the gangue channel 110. The extended end of the sealing plate 260 forms a guide slope, guiding the material in the gangue channel 110 to one side of the auxiliary baffle 250 and discharging it.

[0035] A limiting component 500 is provided inside the body 100. The limiting component 500 includes a limiting rod 510, a sliding seat 520, and a limiting spring 530. The sliding seat 520 is slidably disposed in a slide groove and can slide up and down along the inner wall of the body 100. One end of the limiting rod 510 is hinged to the sealing plate 260 by a pin, and the other end is hinged to the sliding seat 520 by a pin. The limiting spring 530 is sleeved on a guide rod provided on the body 100. The guide rod is fixed vertically to the inner wall of the body 100. The upper end of the limiting spring 530 abuts against the lower surface of the sliding seat 520, and the lower end abuts against a support block provided on the inner wall of the body 100. When the sealing plate 260 blocks the opening 111, the limiting spring... When the spring 530 is in a compressed state, it pushes the sliding seat 520 upward. The sliding seat 520 pulls the sealing plate 260 through the limiting rod 510, and the auxiliary sealing plate 260 remains in a blocked state. When the sealing plate 260 rotates with the auxiliary baffle 250, the sealing plate 260 pulls the sliding seat 520 downward through the limiting rod 510, and the limiting spring 530 is further compressed. When the large piece of material is discharged, the elastic force of the limiting spring 530 pushes the sliding seat 520 to reset upward, and pulls the sealing plate 260 to reset through the limiting rod 510, re-sealing the opening 111.

[0036] In this design, the sealing plate 260 and the auxiliary baffle 250 are linked. When opened, the sealing plate extends into the gangue channel 110 to form a guide slope, actively guiding the material accumulated in the channel to the auxiliary outlet 240. Furthermore, when the gangue pushes against the auxiliary baffle 250, the material accumulated in the gangue channel 110 is discharged, solving the problem of material accumulation and blockage. Simultaneously, the sealing plate 260 normally blocks the opening 111, preventing gangue from leaking out and ensuring the integrity of the channel. The limiting component 500 works in conjunction with the sealing plate 260. On one hand, the elastic force of the limiting spring 530 assists the sealing plate 260 in resetting, enhancing reset reliability and avoiding insufficient reset due to reliance solely on the reset component. On the other hand, the limiting component 500 achieves its function through a mechanical structure, eliminating the need for electrical control components and further reducing equipment complexity and maintenance costs.

[0037] Furthermore, the waste rock jigging machine also includes an adjustment assembly 400, which includes a support plate 410. The support plate 410 is rotatably connected to the inner wall of the waste rock channel 110 away from the auxiliary baffle 250 via a rotating shaft, the axis of which is arranged horizontally. The other end of the support plate 410 is a free end, extending to the lower end of the screen plate 300. When the screen plate 300 is in its initial state, the free end of the support plate 410 abuts against the lower surface of the screen plate 300, forming support. When the support plate 410 rotates upward around the rotating shaft, its free end pushes against the lower surface of the screen plate 300, causing the screen plate 300 to rotate upward and reduce the tilt angle. When the support plate 410 rotates downward, the screen plate 300 rotates downward under its own gravity, increasing the tilt angle. The speed of gangue discharge can be controlled by adjusting the tilt angle of the screen plate 300. An angle calibration sensor is installed at the rotating shaft of the auxiliary baffle 250. When the auxiliary baffle 250 rotates to open the auxiliary outlet 240, the tilt angle of the screen plate 300 is reduced, temporarily slowing down the discharge of gangue. When the angle detection sensor is installed, the rotation angle of the support plate 410 can be controlled by an external rotation drive component.

[0038] Furthermore, when the angle detection sensor and the external rotation drive are not used, the adjustment assembly also includes an adjustment rod 420. One end of the adjustment rod 420 is fixedly connected to the side of the sealing plate 260 away from the auxiliary baffle 250, and the other end extends toward the support plate 410, with the end face of its extended end facing the side wall of the support plate 410. When the sealing plate 260 rotates with the auxiliary baffle 250 and extends into the gangue channel 110, the adjustment rod 420 rotates synchronously with the sealing plate 260, and the end face of its extended end contacts the side wall of the support plate 410 and pushes the support plate 410 to rotate upward around the rotation axis, thereby pushing the screen plate 300 to reduce the tilt angle. When the sealing plate 260 is reset, the adjustment rod 420 rotates in the opposite direction with the sealing plate 260, but the adjustment rod 420 still contacts the support plate 410 to support the support plate 410. The support plate 410 rotates downward under its own weight and the weight of the screen plate 300, and the screen plate 300 is reset accordingly.

[0039] In this embodiment, the adjustment component 400 achieves linkage adjustment of the screen plate 300 angle through the support plate 410 and the adjusting rod 420. When a large piece of gangue appears, causing the auxiliary baffle 250 to open, the sealing plate 260 drives the adjusting rod 420 to push the support plate 410, automatically reducing the tilt angle of the screen plate 300 and reducing the conveying speed of gangue to the gangue channel 110, adapting to the gangue discharge requirements at this time. After the large piece of gangue is discharged, the adjusting rod 420 returns to its original position with the sealing plate 260, and the screen plate 300 angle automatically recovers. This linkage mechanism requires no manual intervention, responds quickly, and achieves a dynamic balance between discharge efficiency and sorting accuracy. In addition, the adjustment component 400 relies entirely on mechanical linkage to achieve its function, without an additional power source, improving the adaptability and operational stability of the equipment and reducing manual maintenance costs.

[0040] Furthermore, the machine body 100 also includes a raw coal channel 120 and an overflow port 130. The raw coal channel 120 and the gangue channel 110 are spaced apart along the width direction of the machine body 100. The inlet of the raw coal channel 120 is higher than the inlet of the gangue channel 110 and is connected to the sorting area inside the machine body 100, for conveying the sorted raw coal to the next process.

[0041] Overflow port 130 is located on the side of raw coal channel 120 away from gangue channel 110. The height of overflow port 130 is higher than the height of the inlet of raw coal channel 120 and lower than the top height of machine body 100. Overflow net 121 is fixedly installed at overflow port 130. Overflow net 121 is laid along the outline of overflow port 130. Its mesh size is smaller than the particle size of conventional clean coal and larger than the particle size of water and fine mud. When the water surface in the sorting area rises to the height of overflow port 130 due to jigging, low-density clean coal overflows with the water flow, is filtered by overflow net 121 and discharged, and water and fine mud flow into the subsequent treatment device through the mesh.

[0042] In this embodiment, the overflow port 130 is positioned higher than the raw coal inlet to prevent raw coal from being discharged with the overflow, ensuring sufficient separation. The overflow net 121 enables preliminary separation of clean coal from moisture and fine mud, reducing the load on subsequent clean coal dewatering and improving overall production efficiency. Furthermore, the raw coal channel 120 and the gangue channel 110 are spaced apart to prevent mixing of raw coal and gangue during transport, further ensuring separation accuracy. Compared to existing structures without dedicated overflow filters, this significantly optimizes the separation process and improves product quality and production efficiency.

[0043] Furthermore, a buffer channel 140 is provided below the discharge wheel 210. The upper end of the buffer channel 140 is connected to the lower area of ​​the discharge wheel 210, and the lower end extends to the outside of the machine body 100 to form a gangue discharge outlet. The buffer channel 140 is inclined as a whole, and its inclination direction is consistent with the discharge direction of the discharge wheel 210. When the discharge wheel 210 drops conventional gangue from the discharge space, the gangue enters the buffer channel 140, slides slowly down the inclined inner wall of the channel, and after the impact is reduced by the buffer layer, it is discharged from the gangue discharge outlet at the lower end.

[0044] In this embodiment, the buffer channel 140 extends the falling path of the gangue, reduces its falling speed, mitigates the impact on subsequent equipment, and extends the service life of the equipment. Compared with the high-frequency maintenance caused by existing equipment without a buffer structure, this significantly reduces maintenance costs. Furthermore, the buffer channel 140 can collect dust generated when the gangue falls, reducing dust diffusion and improving the working environment. In addition, the inclination direction of the buffer channel 140 is consistent with the discharge direction of the discharge wheel 210, ensuring smooth gangue conveying, preventing gangue accumulation in the channel, and further ensuring continuous discharge. It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A jigging machine for waste rock removal, characterized in that, include: The body (100) has a gangue channel (110); A discharge wheel (210) is rotatably disposed at the outlet of the gangue channel (110). Several discharge plates (220) are distributed at intervals on the peripheral wall of the discharge wheel (210). A discharge space is formed between two adjacent discharge plates (220). A baffle plate (230) is provided on the downward side of the outlet. The baffle plate (230) partially surrounds the lower side of the outlet. An auxiliary outlet (240) communicating with the outlet is provided on the side opposite to the baffle plate (230). An auxiliary baffle (250) is provided at one end rotatably on the outer side wall of the discharge port near the auxiliary outlet (240), and the other end of the auxiliary baffle (250) is used to abut against the baffle plate (230) to close the auxiliary outlet (240) or rotate away from the baffle plate (230) and open the auxiliary outlet (240).

2. The jigging machine for waste rock removal according to claim 1, characterized in that, A reset member is connected between the auxiliary baffle (250) and the side wall of the discharge port. The reset member is used to elastically pull the auxiliary baffle (250) so that the auxiliary baffle (250) abuts against the baffle plate (230).

3. The jigging machine for waste rock removal according to claim 1, characterized in that, The machine body (100) is provided with a sieve plate (300). One end of the sieve plate (300) is rotatably disposed on the inner wall of the machine body (100), and the other end extends downward in the direction of the gangue channel (110).

4. A jigging machine for waste rock removal according to claim 3, characterized in that, The gangue channel (110) has an opening (111) on the side wall near the auxiliary baffle (250). A sealing plate (260) for sealing the opening (111) is connected to the auxiliary baffle (250). The sealing plate (260) can extend into the gangue channel (110) when the auxiliary baffle (250) opens the opening (111) to guide at least part of the material in the gangue channel (110) to the auxiliary baffle (250).

5. A jigging machine for waste rock removal according to claim 4, characterized in that, It also includes an adjustment assembly (400) for adjusting the angle of the screen plate (300). The adjustment assembly (400) includes a support plate (410) rotatably disposed on the inner wall of the gangue channel (110). The support plate (410) is located on the side wall opposite to the auxiliary baffle (250). The other end of the support plate (410) is used to abut against the lower end of the screen plate (300). The support plate (410) can rotate and push the screen plate (300) to adjust the angle of the screen plate (300).

6. A jigging machine for waste rock removal according to claim 5, characterized in that, The adjustment assembly (400) also includes an adjustment rod (420) disposed on the sealing plate (260), which can push the support plate (410) to rotate when it rotates with the sealing plate (260).

7. A jigging machine for waste rock removal according to claim 3, characterized in that, The gangue channel (110) is provided with a sealing support strip (310) at the top side near the sieve plate (300), and the sealing support strip (310) is used to abut against the sieve plate (300).

8. A jigging machine for waste rock removal according to claim 4, characterized in that, It also includes a limiting component (500) disposed within the body (100). The limiting component (500) includes a limiting rod (510), a sliding seat (520), and a limiting spring (530). The sliding seat (520) is slidably disposed on the body (100). The two ends of the limiting rod (510) are respectively hinged to the sealing plate (260) and the sliding seat (520). The two ends of the limiting spring (530) are respectively connected to the sliding seat (520) and the body (100). The limiting spring (530) is used to push the sliding seat (520) upward so that the sealing plate (260) blocks the opening (111).

9. A jigging machine for waste rock removal according to claim 1, characterized in that, The machine body (100) also includes a raw coal channel (120) spaced apart from the gangue channel (110) and an overflow port (130) located on the side of the raw coal channel (120) away from the gangue channel (110). The height of the overflow port (130) is higher than the height of the inlet of the raw coal channel (120), and an overflow net (121) is provided at the overflow port (130).

10. A jigging machine for waste rock removal according to claim 1, characterized in that, A buffer channel (140) is provided below the discharge wheel (210).

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