Dewatering screen for ore dressing

Abstract

The utility model relates to the technical field of ore pulp dewatering, and specifically discloses a dewatering screen for ore dressing, which comprises a rack, a dewatering box elastically mounted on the top of the rack, a filter screen fixedly installed inside the dewatering box, two vibration generating devices fixedly arranged on the top of the dewatering box, a plurality of movable shafts equidistantly arranged above the filter screen, the plurality of movable shafts being perpendicular to the forward direction of the material, and a plurality of sets of first accessory components of a separation device equidistantly arranged on each movable shaft and used for swinging and extruding the material when the dewatering box vibrates; the high-frequency vibration of the dewatering box drives the first accessory components of the separation device to reciprocatingly swing and extrude the ore material, and the hollow cylinder inside rolls and eccentrically vibrates and shakes to impact, so that the dewatering and separation mode combining vibration and extrusion is realized, and the solid-liquid separation speed and the solid-liquid separation cleanliness of the ore dressing material are improved; the fixed spacing between the first accessory components of the separation device and the filter screen is used to limit, scrape and spread the material layer, so that the quality of the finished product after solid-liquid separation is ensured.

Description

Technical Field

[0001] This utility model relates to the field of mineral slurry dewatering technology, and in particular to a dewatering screen for mineral processing. Background Technology

[0002] In the mineral processing production process, slurry materials generally contain a large amount of water. Dewatering is a core and critical process that connects mineral processing, material storage, transportation and tailings environmental disposal. Common dewatering equipment is the dewatering screen, which relies on the vibrating filter element of the dewatering screen to dewater the slurry.

[0003] A dewatering screen for mineral processing, disclosed in Chinese Patent Publication No. CN222788644U, allows workers to replace screen plates from outside the equipment by setting a first cover plate and a second cover plate. This is convenient, quick, and safe. However, according to dewatering screens provided in related fields and existing dewatering screens, traditional dewatering screens can only separate surface moisture from materials and cannot effectively separate inner moisture, resulting in slow dewatering speed and poor overall solid-liquid separation effect. At the same time, traditional dewatering screens cannot control the thickness of the material layer on the screen surface, and the material tends to accumulate unevenly, resulting in poor dewatering uniformity and affecting the dewatering quality of the finished product. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a dewatering screen for mineral processing.

[0005] The objective of this utility model is achieved through the following technical solution: A dewatering screen for mineral processing includes a frame, a dewatering box elastically mounted on the top of the frame, a filter screen fixedly installed inside the dewatering box, two vibration generating devices fixedly mounted on the top of the dewatering box, multiple movable shafts equidistantly arranged above the filter screen in the dewatering box, all of the multiple movable shafts being perpendicular to the forward direction of the material, and multiple sets of first auxiliary components of a separation device equidistantly arranged on each movable shaft for swinging and squeezing the material when the dewatering box vibrates, a second auxiliary component of a separation device for adjusting the initial height of the movable shaft at both ends of each movable shaft in the dewatering box, and a third auxiliary component of a separation device for synchronously controlling the multiple sets of second auxiliary components of the separation device on the feed side of the dewatering box; the first auxiliary component of the separation device includes a fixing sleeve fixed to the outer surface of the movable shaft, a herringbone plate fixed to both ends of the fixing sleeve, and two extrusion members symmetrically arranged between the two herringbone plates.

[0006] Preferably, the extrusion component includes a hollow cylinder, inside which a rolling column is movably disposed, the diameter of which is smaller than the inner diameter of the hollow cylinder, and fixed plates are fixed at both ends of the hollow cylinder, the two fixed plates being respectively fixed to the corresponding ends of the two herringbone plates.

[0007] Preferably, the second auxiliary component of the separation device includes a limiting plate fixed to the outside of the dehydration tank. A top plate is movably provided on the side of the limiting plate away from the dehydration tank. A limiting groove is opened through the limiting plate. A movable sleeve is movably installed inside the limiting groove. The movable sleeve is rotatably installed at the end of the movable shaft. The top plate is provided with a slope for supporting the movable sleeve.

[0008] Preferably, the third auxiliary component of the separation device includes a lead screw and a control frame. The control frame is slidably installed on the outside of the dewatering tank along the material forward direction. The lead screw is rotatably installed on the feed side of the dewatering tank. The lead screw is threadedly engaged with the control frame. A rotating handle is fixedly provided at the end of the lead screw away from the dewatering tank. The control frame is n-shaped, and multiple top plates are fixed on the control frame.

[0009] Preferably, the first auxiliary components of the separation device on two adjacent movable shafts are staggered.

[0010] Preferably, the dehydration tank has movable grooves at both ends of each movable shaft, and both the movable grooves and the limiting grooves are arranged along the direction of the excitation force of the vibration generating device, and the inclination direction of the ramp is perpendicular to the limiting grooves.

[0011] Preferably, a first protective cover is fixedly provided on the feed side of the dehydration tank, and a second protective cover is fixedly provided on both sides of the dehydration tank.

[0012] Preferably, both sides of the dehydration tank are fixedly provided with slide rails for supporting the control frame.

[0013] The beneficial effects of this mineral processing dewatering screen are as follows: by setting up a movable shaft, a first auxiliary component of the separation device, a second auxiliary component of the separation device, and a third auxiliary component of the separation device, the first auxiliary component of the separation device reciprocates and squeezes the ore material by relying on the high-frequency vibration of the dewatering box, combined with the eccentric vibration impact of the rolling column inside the hollow cylinder, a dewatering separation mode combining vibration and squeezing is realized, which improves the solid-liquid separation speed and the solid-liquid separation cleanliness of the mineral processing material; at the same time, the fixed distance between the first auxiliary component of the separation device and the filter screen is used to limit, scrape and flatten the material layer, ensuring the consistency of the finished product quality after solid-liquid separation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0015] Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This utility model Figure 1 A magnified schematic diagram of the local structure at point A; Figure 3 This utility model Figure 1 A magnified view of the structure at point B in the middle; Figure 4 This utility model Figure 1 A magnified schematic diagram of the local structure at point C; Figure 5 This is a structural schematic diagram of the present invention from a second perspective; Figure 6 This is a schematic diagram showing the position of the first auxiliary component of the separation device of this utility model; Figure 7 This utility model Figure 6 A magnified schematic diagram of the local structure at point D; Figure 8 This is a schematic diagram of the structure of the first auxiliary component of the separation device of this utility model.

[0016] In the diagram: 1. Frame; 2. Dehydration tank; 3. Filter screen; 4. Vibration generator; 5. Movable shaft; 6. First auxiliary component of the separation device; 61. Fixed sleeve; 62. Herringbone plate; 63. Extrusion part; 631. Hollow cylinder; 632. Rolling column; 633. Fixed plate; 7. Second auxiliary component of the separation device; 71. Movable sleeve; 72. Limiting plate; 73. Top plate; 74. Limiting groove; 75. Inclined ramp; 8. Third auxiliary component of the separation device; 81. Lead screw; 82. Control frame; 83. Rotary handle; 9. Movable groove; 10. Slide rail; 11. First protective cover; 12. Second protective cover. Detailed Implementation

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0019] like Figures 1 to 8As shown, a dewatering screen for mineral processing includes a frame 1. A dewatering tank 2 is elastically mounted on the top of the frame 1. A filter screen 3 is fixedly installed inside the dewatering tank 2. Two vibration generating devices 4 are fixedly mounted on the top of the dewatering tank 2. Multiple movable shafts 5 are equidistantly arranged above the filter screen 3 in the dewatering tank 2. The multiple movable shafts 5 are all perpendicular to the forward direction of the material. Each movable shaft 5 is equidistantly equipped with multiple sets of first auxiliary components 6 for oscillating and squeezing the material when the dewatering tank 2 vibrates. The first auxiliary components 6 of the separation devices on adjacent movable shafts 5 are staggered. At both ends of each movable shaft 5 in the dewatering tank 2, there are second auxiliary components 7 of the separation device for adjusting the initial height of the movable shaft 5. On the feed side of the dewatering tank 2, there are third auxiliary components 8 of the separation device for synchronously controlling the multiple sets of second auxiliary components 7 of the separation device. When the equipment is in operation, the two vibration generating devices 4 start synchronously, and under the action of excitation force, they drive the dewatering tank 2 to move on the elastic support of the frame 1. The filter screen 3 is subjected to high-frequency reciprocating vibration. The selected mineral material falling on the surface of the filter screen 3 moves forward synchronously with the filter screen 3. The free water carried by the material penetrates the filter screen 3 under the action of vibration to complete the basic dewatering. During the vibration of the dewatering box 2, the movable shaft 5 moves slightly with the dewatering box 2. The multiple sets of first auxiliary components 6 of the separation device arranged in an alternating manner on the shaft continuously swing back and forth, intermittently squeezing the mineral material from above the material layer. The squeezing action can compact the loose mineral material and squeeze out the capillary water attached between the mineral particles, thereby improving the dewatering effect. At the same time, the fixed distance between the first auxiliary component 6 of the separation device and the filter screen 3 limits the maximum thickness of the material layer to avoid the material from accumulating too thickly. In production, the third auxiliary component 8 of the separation device on the feed side can synchronously drive all the second auxiliary components 7 of the separation device to uniformly change the installation height of all movable shafts 5, thereby adjusting the gap between the first auxiliary component 6 of the separation device and the filter screen 3, limiting the thickness of the material layer under different working conditions, and adapting to the squeezing and dewatering requirements of different working conditions.

[0020] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8As shown, the first auxiliary component 6 of the separation device includes a fixed sleeve 61 fixed to the outer surface of the movable shaft 5. Both ends of the fixed sleeve 61 are fixedly provided with herringbone plates 62, and two extrusion members 63 are symmetrically arranged between the two herringbone plates 62. Each extrusion member 63 includes a hollow cylinder 631, inside which a rolling column 632 is movably arranged. The diameter of the rolling column 632 is smaller than the inner diameter of the hollow cylinder 631. Both ends of the hollow cylinder 631 are fixedly provided with fixed discs 633, which are respectively fixed to the corresponding ends of the two herringbone plates 62. When the dehydration tank 2 drives the movable shaft 5 to vibrate, the fixed sleeve 61 and the herringbone plates 62 swing synchronously with the shaft. The herringbone plates 62, through the fixed discs 633, drive the hollow cylinders 631 at both ends to swing back and forth around the movable shaft 5. The outer walls of the two hollow cylinders 631 intersect... The material on the filter screen 3 is squeezed and drained by the pressure. At the same time, a constant gap is formed between the bottom of the hollow cylinder 631 and the filter screen 3, which can limit the maximum thickness of the material layer. When the material layer is too thick, the protruding material layer will be flattened by the hollow cylinder 631, so that the thickness of the material layer on the screen surface is kept uniform and consistent, and avoids excessive local material accumulation. Since the diameter of the rolling column 632 is smaller than the inner diameter of the hollow cylinder 631, the internal rolling column 632 can roll freely in the cylinder when the hollow cylinder 631 swings. The hollow cylinder 631 is subjected to slight vibration and impact by the eccentric disturbance of the rolling column 632, which enhances the squeezing effect. The first auxiliary component 6 of the separation device on the adjacent movable shaft 5 is staggered, so that the material is squeezed at multiple points during the journey, and the thickness is controlled evenly to ensure that the dewatering quality of the material is uniform and stable.

[0021] like Figures 1 to 4 As shown, the second auxiliary component 7 of the separation device includes a limiting plate 72 fixed to the outside of the dehydration tank 2. A top plate 73 is movably provided on the side of the limiting plate 72 away from the dehydration tank 2. A limiting groove 74 is opened through the limiting plate 72. A movable sleeve 71 is movably installed inside the limiting groove 74. The movable sleeve 71 is rotatably installed at the end of the movable shaft 5. The top plate 73 is provided with a ramp 75 for supporting the movable sleeve 71. The dehydration tank 2 is provided with movable grooves 9 at both ends corresponding to each movable shaft 5. The movable grooves 9 and the limiting grooves 74 are both arranged in the direction of the excitation force of the vibration generating device 4. The inclination direction of the ramp 75 is perpendicular to the limiting groove 74. Multiple dust covers (not shown in the figure) are provided inside the dehydration tank 2 for sealing the movable grooves 9. The third auxiliary component 8 of the separation device includes a lead screw 81 and a control frame 82. The control frame 82 is slidably installed on the outside of the dewatering tank 2 along the material forward direction. The lead screw 81 is rotatably installed on the feed side of the dewatering tank 2. The lead screw 81 is threadedly engaged with the control frame 82. A handle 83 is fixedly provided at the end of the lead screw 81 away from the dewatering tank 2. The control frame 82 is n-shaped. Multiple top plates 73 are fixed on the control frame 82. Slide rails 10 for supporting the control frame 82 are fixedly provided on both sides of the dewatering tank 2. A first protective cover 11 is fixedly provided on the feed side of the dewatering tank 2. A second protective cover is fixedly provided on both sides of the dewatering tank 2 to protect the internal structure from dust. When it is necessary to uniformly adjust the height of the movable shaft 5 away from the screen and the material layer limit thickness, the operator rotates the exposed handle 83, which drives the lead screw 81 to rotate in place. The control frame 82 is driven to slide horizontally along the slide rail 10 by the thread transmission. All top plates 73 move synchronously and in the same direction with the control frame 82. The slope 75 of the top plate 73 changes position relative to the movable sleeve 71. The slope 75 supports the movable sleeve 71 and moves up and down along the direction of the limit groove 74. The movable sleeve 71 synchronously drives the end of the movable shaft 5 to rise or fall as a whole, uniformly adjusting the distance between the first auxiliary component 6 of all separation devices and the filter screen 3 to adapt to dewatering operations under different working conditions.

[0022] The work process is as follows: S1: As Figure 1 and Figure 5 As shown, when the equipment is in operation, the two vibration generators 4 start synchronously to generate high-frequency excitation force, which drives the dewatering tank 2 to perform high-frequency reciprocating vibration under the support of the frame 1. The entire screen surface forms a uniform vibration operation state, providing basic power conditions for material dewatering and conveying. S2: As Figure 1 and Figure 5 As shown, the slurry is conveyed from the feed end of the equipment to the surface of the vibrating filter screen 3. The slurry moves forward at a constant speed with the high-frequency reciprocating vibration of the filter screen 3. The water contained in the slurry is separated from the slurry under the action of vibration, thus completing the basic dewatering operation of the material. S3: As Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, during the continuous vibration of the dewatering tank 2, multiple movable shafts 5 above will simultaneously produce small swaying. The movable shafts 5 will drive multiple sets of first auxiliary components 6 of the separation device arranged in an alternating manner on the outside to continuously swing back and forth, so that the two hollow cylinders 631 of the first auxiliary component 6 of the separation device will alternately press down and contact the mineral material layer in the forward process. S4: As Figure 2 , Figure 6 and Figure 7 As shown, during the downward pressing process of the hollow cylinder 631, the loose mineral material layer is compacted, the water in the gaps between the mineral particles is squeezed out, and the residual water inside the material is further removed, thereby improving the overall dewatering effect. At the same time, the hollow cylinder 631 and the filter screen 3 maintain a fixed distance, flattening the excessively thick material and making the material layer on the screen surface uniform in thickness, thus avoiding excessive accumulation of material in some areas. S5: As Figure 7 and Figure 8 As shown, when the hollow cylinder 631 reciprocates, the smaller diameter rolling column 632 inside can roll freely. Through eccentric disturbance, the hollow cylinder 631 generates slight vibration and small impact, which enhances the squeezing and dewatering effect on the ore layer. S6: As Figures 1 to 4 As shown, for mineral processing materials with different particle sizes and moisture contents, the exposed handle 83 on the feed side can be rotated to drive the lead screw 81 to rotate and drive the control frame 82 to slide horizontally along the slide rail 10 through the threaded transmission, thereby driving all the top plates 73 to move synchronously. The top plate 73 slope 75 supports the rotating sleeve to rise and fall along the limiting groove 74, and uniformly adjusts the spacing between all the movable shafts 5 and the first auxiliary component 6 of the separation device and the filter screen 3, adapting to the material layer thickness limit requirements of different working conditions.

[0023] The vibration generating device 4 in this application is a well-known technology in this field, therefore its specific structure and working principle are not described in detail.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A dewatering screen for mineral processing, characterized in that: The machine includes a frame (1), a dehydration tank (2) is elastically mounted on the top of the frame (1), a filter screen (3) is fixedly installed inside the dehydration tank (2), two vibration generating devices (4) are fixedly installed on the top of the dehydration tank (2), multiple movable shafts (5) are equidistantly arranged above the filter screen (3) of the dehydration tank (2), the multiple movable shafts (5) are all perpendicular to the forward direction of the material, multiple sets of first auxiliary components (6) of the separation device are equidistantly arranged on each movable shaft (5) for swinging and squeezing the material when the dehydration tank (2) vibrates, the dehydration tank (2) is provided at both ends of each movable shaft (5) for adjusting the initial height of the movable shaft (5), and a third auxiliary component (8) of the separation device is provided on the feed side of the dehydration tank (2) for synchronously controlling the multiple sets of second auxiliary components (7) of the separation device. The first auxiliary component (6) of the separation device includes a fixed sleeve (61) fixed on the outer surface of the movable shaft (5). Both ends of the fixed sleeve (61) are fixed with herringbone plates (62), and two extrusion members (63) are symmetrically arranged between the two herringbone plates (62).

2. The dewatering screen for mineral processing according to claim 1, characterized in that: The extrusion component (63) includes a hollow cylinder (631), inside which a rolling column (632) is movably provided. The diameter of the rolling column (632) is smaller than the inner diameter of the hollow cylinder (631). Fixed discs (633) are fixed at both ends of the hollow cylinder (631), and the two fixed discs (633) are respectively fixed at the corresponding ends of the two herringbone plates (62).

3. A dewatering screen for mineral processing according to claim 1, characterized in that: The second auxiliary component (7) of the separation device includes a limiting plate (72) fixed to the outside of the dehydration tank (2). A top plate (73) is movably provided on the side of the limiting plate (72) away from the dehydration tank (2). A limiting groove (74) is provided through the limiting plate (72). A movable sleeve (71) is movably installed inside the limiting groove (74). The movable sleeve (71) is rotatably installed at the end of the movable shaft (5). A ramp (75) for supporting the movable sleeve (71) is provided on the top plate (73).

4. A dewatering screen for mineral processing according to claim 3, characterized in that: The third auxiliary component (8) of the separation device includes a lead screw (81) and a control frame (82). The control frame (82) is slidably installed on the outside of the dewatering tank (2) along the material forward direction. The lead screw (81) is rotatably installed on the feed side of the dewatering tank (2). The lead screw (81) is threadedly engaged with the control frame (82). A handle (83) is fixedly provided at one end of the lead screw (81) away from the dewatering tank (2). The control frame (82) is n-shaped. Multiple top plates (73) are fixed on the control frame (82).

5. A dewatering screen for mineral processing according to claim 1, characterized in that: The first auxiliary components (6) of the separation device on two adjacent movable shafts (5) are staggered.

6. A dewatering screen for mineral processing according to claim 4, characterized in that: The dehydration tank (2) has movable grooves (9) at both ends of each movable shaft (5). The movable grooves (9) and the limiting grooves (74) are both arranged in the direction of the excitation force of the vibration generating device (4). The inclination direction of the ramp (75) is perpendicular to the limiting grooves (74).

7. A dewatering screen for mineral processing according to claim 4, characterized in that: The dehydration tank (2) is fixedly provided with a first protective cover (11) on the feed side, and a second protective cover (12) is fixedly provided on both sides of the dehydration tank (2).

8. A dewatering screen for mineral processing according to claim 4, characterized in that: Both sides of the dehydration tank (2) are fixed with slide rails (10) for supporting the control frame (82).

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