A fine ore screening device for tungsten ore processing

Abstract

The present invention relates to the technical field of ore screening, and particularly relates to a fine ore screening device for tungsten ore processing. The present invention provides a fine ore screening device for tungsten ore processing that can perform secondary screening on tungsten ore and is convenient for cleaning the remaining fine tungsten ore. The present invention provides such a fine ore screening device for tungsten ore processing, which includes a secondary screening mechanism, an auxiliary mechanism, etc. A secondary screening mechanism for secondary screening of tungsten ore is provided between two brackets, and an auxiliary mechanism for cleaning the accumulated fine tungsten ore is provided on the sorting frame. By moving the scraping plate, it is convenient to push out the accumulated fine tungsten ore; by the first contact plate contacting the sorting plate, the sorting plate can be made to vibrate, thereby enabling the sorting plate to better screen the tungsten ore; through the sorting frame, the tungsten ore can be subjected to secondary screening, thereby improving the screening quality of the tungsten ore.

Description

Technical Field

[0001] The present invention relates to the technical field of ore screening, and particularly relates to a fine ore screening device for tungsten ore processing. Background Art

[0002] Tungsten is a high melting point rare metal or refractory rare metal in the fields of metallurgy and metal materials. When people process tungsten ore, they first crush the tungsten ore, and then screen the fine tungsten ore in the tungsten ore to facilitate the processing of the fine tungsten ore by people.

[0003] Currently, when screening the fine tungsten ore in tungsten ore, a screening machine is usually used to screen the fine tungsten ore in the tungsten ore. However, during the screening process of the fine tungsten ore in the tungsten ore by the screening machine, only the tungsten ore in transmission is screened by the screening machine alone, which is not convenient for secondary screening of the tungsten ore. Moreover, since the fine tungsten ore is small, it is easy to remain in the screening machine. When the fine tungsten ore in the screening machine accumulates too much, it is easy to cause blockage, and the existing screening machine is not convenient for cleaning the accumulated fine tungsten ore.

[0004] Therefore, it is necessary to design a fine ore screening device for tungsten ore processing that can perform secondary screening on tungsten ore and is convenient for cleaning the remaining fine tungsten ore. Summary of the Invention

[0005] In order to overcome the disadvantages that the prior art is not convenient for secondary screening of tungsten ore and cleaning of the accumulated fine tungsten ore, the purpose of the present invention is to provide a fine ore screening device for tungsten ore processing that can perform secondary screening on tungsten ore and is convenient for cleaning the remaining fine tungsten ore.

[0006] The technical solution is as follows: A fine ore screening device for tungsten ore processing includes a sorting frame, a support, a sorting plate, a fixing block, a first elastic member, a motor, and a first contact plate. At least two supports are connected to the sorting frame. The inner shape of the sorting frame is inclined. A sorting plate for screening tungsten ore is slidably connected to the sorting frame. The shape of the sorting plate is inclined. At least two fixing blocks are connected to the sorting frame. A first elastic member is connected between each fixing block and the sorting plate. A motor is installed at the bottom of the sorting frame. A first contact plate is connected to the output shaft of the motor. The rotation of the first contact plate can contact the sorting plate to make the sorting plate move upward. An outlet for discharging fine tungsten ore is opened at the lower part of the sorting frame. It further includes a secondary screening mechanism and an auxiliary mechanism. A secondary screening mechanism for secondary screening of tungsten ore is provided between the two supports, and an auxiliary mechanism for cleaning the accumulated fine tungsten ore is provided on the sorting frame.

[0007] As an improvement to the above solution, the secondary screening mechanism includes a first guide rod, a sorting frame, a second elastic member, a first baffle, and a second baffle. At least two first guide rods are connected to the bracket. A sorting frame for secondary screening of tungsten ore is slidably connected between the first guide rods. A second elastic member is sleeved on each first guide rod. One end of the second elastic member is connected to the bracket, and the other end of the second elastic member is connected to the sorting frame. A first baffle is slidably connected to the sorting frame. When the first baffle moves downward, it can seal the discharge port on the sorting frame. At least two second baffles are slidably connected to the sorting frame. The second baffles are located on one side of the first baffle.

[0008] As an improvement to the above solution, the auxiliary mechanism includes a scraper, a handle, a limit block, a third elastic member, a sealing plate, and a second guide rod. At least two chutes are opened on the sorting frame. The chutes are located on one side of the second baffle. A scraper is slidably connected between the chutes. The scraper is clamped between the sorting plate and the sorting frame. A handle is connected to one side of the scraper. At least two limit blocks are connected to the sorting frame. The limit blocks are located on one side of the fixed block. A third elastic member is connected to each limit block. A sealing plate is connected between two adjacent third elastic members. The sealing plate is used to seal the chute. Two second guide rods are connected to the sorting frame. The second guide rods are located on one side of the second baffle. The two sealing plates are respectively slidably connected to the adjacent second guide rods.

[0009] As an improvement to the above solution, an opening mechanism for opening the second baffle is further included. The opening mechanism includes a connecting rod, a second contact plate, and a first contact rod. At least two connecting rods are connected to the mutually remote sides of the second baffles. At least two second contact plates are connected to the mutually adjacent sides of the connecting rods. At least two first contact rods are connected to the first baffle. When the first contact rod moves downward, it can contact the second contact plate and make the second contact plate move outward.

[0010] As an improvement to the above solution, an adjusting mechanism for adjusting the shaking amplitude is further included. The adjusting mechanism includes a first fixing plate, a rotating rod, a second fixing plate, a lead screw, a gear, and a first contact block. A first fixing plate is connected to the sorting frame. The rotating rod is rotatably connected to the first fixing plate. At least two second fixing plates are connected to the sorting frame. The second fixing plates are located on one side of the first fixing plate. The lead screw is rotatably connected to the second fixing plate. The number of gears is at least two. Gears are connected to both the lead screw and the rotating rod. Two adjacent gears mesh with each other. A first contact block is connected between the lead screws in a threaded manner. When the first contact plate rotates, it can contact the first contact block and make the first contact block drive the sorting frame to move downward.

[0011] As an improvement to the above solution, it further includes a pressing mechanism for pressing down the first baffle. The pressing mechanism includes a second contact block, a swing frame, a limiting frame, a moving rod, a torsion spring, and a second contact rod. The other side of the scraper is connected to the second contact block. A swing frame is rotatably connected to the sorting frame. The swing frame is located on the other side of the fixed block. A limiting frame is connected to the sorting frame. The limiting frame is located on one side of the swing frame. A moving rod is slidably connected to the limiting frame. The movement of the second contact block can contact the moving rod, causing the moving rod to move and contact the swing frame. One side of the swing frame is sleeved with a torsion spring. The two ends of the torsion spring are respectively connected to the swing frame and the sorting frame. A second contact rod is connected to the first baffle. The second contact rod is located on one side of the first contact rod. The rotation of the swing frame can contact the second contact rod, causing the second contact rod to drive the first baffle to move downward.

[0012] As an improvement to the above solution, it further includes a blocking mechanism for blocking tungsten ore. The blocking mechanism includes a feeding frame and a blocking plate. The feeding frame is connected to the upper part of the sorting frame. The blocking plate is rotatably connected to the lower part of the sorting frame. The blocking plate is used to block the falling of tungsten ore.

[0013] As an improvement to the above solution, it further includes a partition plate. At least two groups of partition plates for isolating tungsten ore are connected to the sorting plate. The number of partition plates in each group is at least two. The partition plates are slidably connected to the sorting frame.

[0014] The present invention has the following advantages: 1. By moving the scraper to the right, it is convenient to push out the accumulated fine tungsten ore. By the contact between the first contact plate and the sorting plate, the sorting plate can be made to vibrate, thereby enabling the sorting plate to better screen the tungsten ore. Through the sorting frame, the tungsten ore can be screened twice, thus improving the screening quality of the tungsten ore.

[0015] 2. When the staff twists the rotating rod, the first contact block can contact the first contact plate, thereby achieving the effect of increasing the vibration amplitude of the sorting frame. By the contact between the limiting frame and the second contact rod, the purpose of automatically moving the first baffle downward can be achieved. By the contact between the first contact rod and the second contact plate, the purpose of automatically moving the second baffle outward can be achieved.

[0016] 3. Through the cooperation of the feeding frame and the blocking plate, it is possible to prevent the tungsten ore from falling to the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 is a first partial three-dimensional structural schematic diagram of the present invention.

[0019] Figure 3 is a second partial three-dimensional structural schematic diagram of the present invention.

[0020] Figure 4 This is the first partial three-dimensional structure schematic diagram of the secondary screening mechanism of the present invention.

[0021] Figure 5 This is the second partial three-dimensional structure schematic diagram of the secondary screening mechanism of the present invention.

[0022] Figure 6 This is the partial sectional three-dimensional structure schematic diagram of the auxiliary mechanism of the present invention.

[0023] Figure 7 This is the first partial three-dimensional structure schematic diagram of the auxiliary mechanism of the present invention.

[0024] Figure 8 This is the second partial three-dimensional structure schematic diagram of the auxiliary mechanism of the present invention.

[0025] Figure 9 This is the three-dimensional structure schematic diagram of the opening mechanism of the present invention.

[0026] Figure 10 This is the three-dimensional structure schematic diagram of the adjusting mechanism of the present invention.

[0027] Figure 11 This is the three-dimensional structure schematic diagram of the pressing mechanism of the present invention.

[0028] Figure 12 This is the sectional three-dimensional structure schematic diagram of the blocking mechanism of the present invention.

[0029] Names of the reference numerals in the figure: 1, sorting box; 2, support; 3, sorting plate; 4, fixed block; 41, partition plate; 5, first elastic member; 6, motor; 7, first contact plate; 8, discharge port; 9, secondary screening mechanism; 91, first guide rod; 92, sorting frame; 93, second elastic member; 94, first baffle; 95, second baffle; 10, auxiliary mechanism; 101, chute; 102, scraper; 103, handle; 104, limiting block; 105, third elastic member; 106, sealing plate; 107, second guide rod; 11, opening mechanism; 111, connecting rod; 112, second contact plate; 113, first contact rod; 12, adjusting mechanism; 121, first fixing plate; 122, rotating rod; 123, second fixing plate; 124, lead screw; 125, gear; 126, first contact block; 13, pressing mechanism; 131, second contact block; 132, swinging frame; 133, limiting frame; 134, moving rod; 135, torsion spring; 136, second contact rod; 14, blocking mechanism; 141, blanking box; 142, blocking plate. Detailed implementation manners

[0030] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are for illustrating the present application and not for limiting the scope of the present application. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0031] Embodiment 1

[0032] As Figures 1-8 shown, a fine ore screening device for tungsten ore processing includes a sorting frame 1, brackets 2, a sorting plate 3, fixing blocks 4, partition plates 41, a first elastic member 5, a motor 6, a first contact plate 7, a secondary screening mechanism 9 and an auxiliary mechanism 10. Brackets 2 are fixedly connected to both the front and rear sides of the sorting frame 1. The inner shape of the sorting frame 1 is inclined with the left side higher and the right side lower. The sorting plate 3 for screening tungsten ore is slidably connected to the upper part of the sorting frame 1. The shape of the sorting plate 3 is inclined with the left side lower and the right side higher. Two fixing blocks 4 are connected to both the front and rear sides of the sorting frame 1. Two groups of partition plates 41 for isolating tungsten ore are connected to both the front and rear sides of the sorting plate 3. There are four groups of partition plates 41, and the number of partition plates 41 in each group is two. The partition plates 41 are slidably connected to the sorting frame 1. A first elastic member 5 is connected between each fixing block 4 and the sorting plate 3. The first elastic member 5 is a compression spring. The motor 6 is installed on the left front side of the bottom of the sorting frame 1 through bolts. A first contact plate 7 is connected to the output shaft of the motor 6. The rotation of the first contact plate 7 can contact the sorting plate 3 to make the sorting plate 3 move upward. An outlet 8 for discharging fine tungsten ore is opened on the lower right side of the sorting frame 1. A secondary screening mechanism 9 is provided between the two brackets 2, and an auxiliary mechanism 10 is provided on the sorting frame 1.

[0033] As Figure 1 、 Figure 4 and Figure 5 shown, the secondary screening mechanism 9 includes a first guide rod 91, a sorting frame 92, a second elastic member 93, a first baffle 94 and a second baffle 95. First guide rods 91 are welded to the lower left and right sides of the two brackets 2. A sorting frame 92 for secondary screening of tungsten ore is slidably connected between the four first guide rods 91. The diameter of the holes in the sorting frame 92 is smaller than the diameter of the holes in the sorting plate 3. A second elastic member 93 is sleeved on each first guide rod 91. The second elastic member 93 is a compression spring. One end of the second elastic member 93 is connected to the bracket 2, and the other end of the second elastic member 93 is connected to the sorting frame 92. A first baffle 94 is slidably connected to the lower right side of the sorting frame 1. The downward movement of the first baffle 94 can seal the outlet 8 on the sorting frame 1. Two second baffles 95 are slidably connected to the lower right side of the sorting frame 1. The second baffles 95 are located below the first baffle 94.

[0034] As Figure 1 、 Figure 6 、 Figure 7And Figure 8 As shown, the auxiliary mechanism 10 includes a scraping plate 102, a grip 103, a limiting block 104, a third elastic member 105, a sealing plate 106 and a second guide rod 107. Chute grooves 101 are formed on the front and rear sides of the lower part of the sorting frame 1. A scraping plate 102 is slidably connected between the two chute grooves 101 on the sorting frame 1. The scraping plate 102 is clamped between the lower part of the sorting plate 3 and the left side inside the sorting frame 1. A grip 103 is fixedly connected to the rear side of the scraping plate 102. Two limiting blocks 104 are welded to the front and rear sides of the lower part of the sorting frame 1. A third elastic member 105 is connected to each limiting block 104. The third elastic member 105 is a compression spring. A sealing plate 106 is connected between the two third elastic members 105 on the front side. A sealing plate 106 is also connected between the two third elastic members 105 on the rear side. The sealing plate 106 is used to seal the chute groove 101. Second guide rods 107 are welded to the front and rear sides on the right side of the lower part of the sorting frame 1. The second guide rods 107 are located above the second shielding plate 95. The two sealing plates 106 are respectively slidably connected to the adjacent second guide rods 107.

[0035] When it is necessary to screen tungsten ore, the motor 6 can be started, and then the output shaft of the motor 6 drives the first contact plate 7 to rotate. While the first contact plate 7 is rotating, it contacts the sorting plate 3, causing the sorting plate 3 to move upward, and then the first elastic member 5 is compressed. When the first contact plate 7 disengages from the sorting plate 3, the first elastic member 5 drives the sorting plate 3 to move downward and reset. At this time, the first contact plate 7 is continuously rotating, so during the rotation of the first contact plate 7, it can continuously contact the sorting plate 3, and then the sorting plate 3 continuously repeats the above up and down movement operation, achieving the shaking effect. Subsequently, the tungsten ore is poured onto the sorting plate 3 from the upper part of the sorting frame 1. Since the shape of the sorting plate 3 is inclined with the left side lower and the right side higher, and at this time the sorting plate 3 is shaking, when the tungsten ore is poured onto the sorting plate 3, the fine tungsten ore in the tungsten ore falls into the sorting frame 1 through the sorting plate 3. Also, because the shape inside the sorting frame 1 is inclined with the left side higher and the right side lower, the fine tungsten ore that falls into the sorting frame 1 will fall out through the discharge port 8. When the required tungsten ore screening is completed, since the fine tungsten ore is smaller, it may accumulate in the sorting frame 1. Subsequently, the grip 103 can be used to move the scraper 102 to the right, and then the scraper 102 pushes the fine tungsten ore accumulated in the sorting frame 1 out through the discharge port 8. While the scraper 102 moves to the right, it contacts the sealing plate 106, causing the sealing plate 106 to move downward, and then the third elastic member 105 is compressed. When the remaining tungsten ore in the sorting frame 1 is pushed out, the grip 103 can be used to move the scraper 102 to the left to reset, so that the scraper 102 is re-connected to the sorting plate 3 and the sorting frame 1. When the scraper 102 separates from the sealing plate 106, the third elastic member 105 drives the sealing plate 106 to move upward, and then the sealing plate 106 re-seals the chute 101 to prevent the tungsten ore from falling out through the chute 101 during the shaking of the sorting plate 3. Subsequently, the remaining tungsten ore in the sorting plate 3 can be taken out. When it is necessary to perform secondary sorting on the tungsten ore, the first baffle 94 can be moved downward so that the first baffle 94 seals the discharge port 8, and then the second baffle 95 is moved outward. Subsequently, tungsten ore is poured onto the sorting plate 3 again. When the fine tungsten ore in the tungsten ore falls into the sorting frame 1, the fine tungsten ore will fall into the sorting rack 92 through the gap between the second baffle 95 and the sorting frame 1. When the tungsten ore falls into the sorting rack 92, under the action of the second elastic member 93, the sorting rack 92 can be driven to shake up and down. Since the hole diameter in the sorting rack 92 is smaller than the hole diameter of the sorting plate 3, during the shaking of the sorting rack 92, the sorting rack 92 can perform secondary screening on the tungsten ore. When it is not necessary to perform secondary screening on the tungsten ore, the motor 6 can be turned off so that the motor 6 stops running. Subsequently, the remaining tungsten ore in the sorting rack 92 can be taken out. While the sorting plate 3 is moving, the isolation plate 41 can prevent the tungsten ore from falling out through the gap between the sorting plate 3 and the sorting frame 1. In this way, by the contact between the first contact plate 7 and the sorting plate 3, the sorting plate 3 can achieve the shaking effect, and then the sorting plate 3 can better screen the tungsten ore;The tungsten ore can be secondarily screened by the sorting rack 92, thereby improving the screening quality of the tungsten ore.

[0036] Embodiment 2

[0037] As Figure 1 and Figure 9 As shown in [figures], on the basis of Embodiment 1, it further includes an opening mechanism 11. The opening mechanism 11 includes a connecting rod 111, a second contact plate 112 and a first contact rod 113. Connecting rods 111 are welded to the mutually remote sides of the two second shielding plates 95. Second contact plates 112 are fixedly connected to the mutually approaching sides of the two connecting rods 111. First contact rods 113 are fixedly connected to the front and rear sides of the first shielding plate 94. When the first contact rods 113 move downward, they can contact the second contact plates 112, causing the second contact plates 112 to move outward.

[0038] As Figure 1 and Figure 10 As shown in [figures], it further includes an adjusting mechanism 12. The adjusting mechanism 12 includes a first fixing plate 121, a rotating rod 122, a second fixing plate 123, a lead screw 124, a gear 125 and a first contact block 126. A first fixing plate 121 is welded to the middle position of the front part of the sorting rack 92. A rotating rod 122 is rotatably connected to the first fixing plate 121. Second fixing plates 123 are welded to the left and right sides of the front part of the sorting rack 92. Lead screws 124 are rotatably connected to the two second fixing plates 123. The number of gears 125 is three. The two lead screws 124 and the lower part of the rotating rod 122 are connected with gears 125 through keys. The two adjacent gears 125 mesh with each other. A first contact block 126 is connected between the two lead screws 124 in a threaded manner. When the first contact plate 7 rotates, it can contact the first contact block 126, causing the first contact block 126 to drive the sorting rack 92 to move downward.

[0039] As Figure 1 and Figure 11 It should be noted that the specific figures in [figures] need to be filled in according to the actual situation in the original text.As shown, it further includes a pressing mechanism 13. The pressing mechanism 13 includes a second contact block 131, a swing frame 132, a limiting frame 133, a moving rod 134, a torsion spring 135 and a second contact rod 136. The second contact block 131 is welded to the front side of the top of the scraper 102. The lower front side of the sorting frame 1 is rotatably connected with the swing frame 132. The lower front side of the sorting frame 1 is fixedly connected with the limiting frame 133. The limiting frame 133 is located below the swing frame 132. The moving rod 134 is slidably connected to the limiting frame 133. When the second contact block 131 moves to the right, it can contact the moving rod 134, causing the moving rod 134 to move upward and contact the swing frame 132. A torsion spring 135 is sleeved on the left part of the swing frame 132. The two ends of the torsion spring 135 are respectively connected to the swing frame 132 and the sorting frame 1. The second contact rod 136 is connected to the front side of the top of the first baffle 94. When the swing frame 132 rotates downward, it can contact the second contact rod 136, causing the second contact rod 136 to drive the first baffle 94 to move downward.

[0040] When secondary screening of tungsten ore is required, the scraper 102 and the second contact block 131 can be moved to the right. While the second contact block 131 is moving to the right, it contacts the moving rod 134, causing the moving rod 134 to move upward and contact the left part of the swing frame 132, making the right part of the swing frame 132 rotate downward. As a result, the torsion spring 135 is deformed. While the right part of the swing frame 132 is rotating downward, it contacts the second contact rod 136, causing the second contact rod 136 to drive the first baffle 94 and the first contact rod 113 to move downward. When the first contact rod 113 moves downward, it contacts the second contact plate 112, causing the second contact plate 112 and the second baffle 95 to move outward. After the second baffle 95 moves outward, the tungsten ore can fall into the sorting frame 92 through the gap between the second baffle 95 and the sorting frame 1. When the second contact block 131 disengages from the moving rod 134, the torsion spring 135 drives the swing frame 132 to rotate in the reverse direction and reset. While the left part of the swing frame 132 is rotating downward, it contacts the moving rod 134, causing the moving rod 134 to move downward and reset. When the scraper 102 needs to be reset, the scraper 102 can be moved upward, causing the scraper 102 to be re-engaged with the sorting plate 3 and the sorting frame 1. While the scraper 102 is moving upward, it contacts the moving rod 134, causing the swing frame 132 to rotate, and thus the torsion spring 135 is deformed. When the scraper 102 disengages from the moving rod 134, the torsion spring 135 drives the swing frame 132 to rotate in the reverse direction and reset. When secondary screening of tungsten ore is not required, the connecting rod 111, the second contact plate 112, and the second baffle 95 can be moved inward. While the second contact plate 112 is moving inward, it contacts the first contact rod 113, causing the first contact rod 113 to drive the first baffle 94 to move upward. Then, the fine tungsten ore can fall out through the discharge port 8. And when secondary screening of the fine tungsten ore is required, the rotating rod 122 can be twisted, causing the three gears 125 to mesh and drive the lead screw 124 to rotate. While the lead screw 124 is rotating, the first contact block 126 moves upward. When the first contact block 126 reaches the predetermined position, the twisting of the rotating rod 122 can be stopped. While the first contact plate 7 is rotating, it can contact the first contact block 126, causing the first contact block 126 to drive the sorting frame 92 to move downward through the lead screw 124. As a result, the second elastic member 93 is compressed. When the first contact plate 7 separates from the first contact block 126, the second elastic member 93 can drive the sorting frame 92 and the first contact block 126 to move upward and reset. When the first contact plate 7 contacts the first contact block 126 again, the sorting frame 92 can repeat the above up and down movement operations to perform secondary screening on the tungsten ore. When secondary screening of tungsten ore is not required, the rotating rod 122 can be twisted in the reverse direction, causing the first contact block 126 to move downward. After the first contact block 126 moves downward, it no longer contacts the first contact block 126 while the first contact plate 7 is rotating. Thus, by twisting the rotating rod 122, the first contact block 126 can be made to contact the first contact plate 7,Thus, the effect of increasing the shaking amplitude of the sorting frame 92 is achieved; by the contact between the limit frame 133 and the second contact rod 136, the purpose of automatically moving the first baffle 94 downward can be achieved; by the contact between the first contact rod 113 and the second contact plate 112, the purpose of automatically moving the second baffle 95 outward can be achieved.,

[0041] Such as Figure 1 and Figure 12 As shown, it further includes a blocking mechanism 14. The blocking mechanism 14 includes a blanking frame 141 and a blocking plate 142. The blanking frame 141 is fixedly connected to the upper right side of the sorting frame 1, and the blocking plate 142 is rotatably connected to the lower left side of the sorting frame 1. The blocking plate 142 is used to block the falling of tungsten ore.

[0042] When pouring tungsten ore onto the sorting plate 3, the blanking frame 141 can prevent the tungsten ore from falling to the ground during pouring. The tungsten ore can be blocked by the blocking plate 142, thereby preventing the tungsten ore from falling to the ground through the lower part of the sorting plate 3. When it is necessary to take out the remaining tungsten ore on the sorting plate 3, the blocking plate 142 can be rotated upward, and then the remaining tungsten ore on the sorting plate 3 can be taken out. Then, the blocking plate 142 is rotated downward to reset. In this way, through the cooperation of the blanking frame 141 and the blocking plate 142, the tungsten ore can be prevented from falling to the ground.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fine ore screening device for tungsten ore processing, comprising a sorting frame (1), a bracket (2), a sorting plate (3), a fixing block (4), a first elastic member (5), a motor (6) and a first contact plate (7). At least two brackets (2) are connected to the sorting frame (1). The inner shape of the sorting frame (1) is inclined. A sorting plate (3) for screening tungsten ore is slidably connected to the sorting frame (1). The shape of the sorting plate (3) is inclined. At least two fixing blocks (4) are connected to the sorting frame (1). A first elastic member (5) is connected between each fixing block (4) and the sorting plate (3). A motor (6) is installed at the bottom of the sorting frame (1). A first contact plate (7) is connected to the output shaft of the motor (6). The rotation of the first contact plate (7) can contact the sorting plate (3) to move the sorting plate (3) upward. An outlet (8) for discharging fine tungsten ore is opened at the lower part of the sorting frame (1). It is characterized in that, It also includes a secondary screening mechanism (9) and an auxiliary mechanism (10). A secondary screening mechanism (9) for secondary screening of tungsten ore is provided between two brackets (2), and an auxiliary mechanism (10) for cleaning the accumulated fine tungsten ore is provided on the sorting frame (1); the secondary screening mechanism (9) includes a first guide rod (91), a sorting frame (92), a second elastic member (93), a first baffle (94) and a second baffle (95). At least two first guide rods (91) are connected to the bracket (2), and a sorting frame (92) for secondary screening of tungsten ore is slidably connected between the first guide rods (91). A second elastic member (93) is sleeved on each first guide rod (91). One end of the second elastic member (93) is connected to the bracket (2), and the other end of the second elastic member (93) is connected to the sorting frame (92). A first baffle (94) is slidably connected to the sorting frame (1). When the first baffle (94) moves downward, it can seal the discharge port (8) on the sorting frame (1). At least two second baffles (95) are slidably connected to the sorting frame (1), and the second baffles (95) are located on one side of the first baffle (94); it also includes an opening mechanism (11) for opening the second baffle (95). The opening mechanism (11) includes a connecting rod (111), a second contact plate (112) and a first contact rod (113). At least two connecting rods (111) are connected to the mutually remote sides of the second baffle (95), and at least two second contact plates (112) are connected to the mutually adjacent sides of the connecting rods (111). At least two first contact rods (113) are connected to the first baffle (94). When the first contact rod (113) moves downward, it can contact the second contact plate (112) to move the second contact plate (112) outward.

2. The fine ore screening device for tungsten ore processing according to claim 1, characterized in that, The auxiliary mechanism (10) includes a scraper (102), a grip (103), a limit block (104), a third elastic member (105), a sealing plate (106) and a second guide rod (107). At least two chutes (101) are formed on the sorting frame (1), and the chutes (101) are located on one side of the second baffle (95). A scraper (102) is slidably connected between the chutes (101). The scraper (102) is clamped between the sorting plate (3) and the sorting frame (1). A grip (103) is connected to one side of the scraper (102). At least two limit blocks (104) are connected to the sorting frame (1), and the limit blocks (104) are located on one side of the fixed block (4). A third elastic member (105) is connected to each limit block (104), and a sealing plate (106) is connected between adjacent third elastic members (105). The sealing plate (106) is used to seal the chute (101). Two second guide rods (107) are connected to the sorting frame (1), and the second guide rods (107) are located on one side of the second baffle (95). The two sealing plates (106) are respectively slidably connected to the adjacent second guide rods (107).

3. The fine ore screening device for tungsten ore processing according to claim 1 is characterized in that, It further includes an adjusting mechanism (12) for adjusting the jitter amplitude. The adjusting mechanism (12) includes a first fixing plate (121), a rotating rod (122), a second fixing plate (123), a lead screw (124), a gear (125) and a first contact block (126). A first fixing plate (121) is connected to the sorting frame (92). A rotating rod (122) is rotatably connected to the first fixing plate (121). At least two second fixing plates (123) are connected to the sorting frame (92). The second fixing plates (123) are located on one side of the first fixing plate (121). A lead screw (124) is rotatably connected to the second fixing plate (123). The number of gears (125) is at least two. Gears (125) are connected to both the lead screw (124) and the rotating rod (122). Two adjacent gears (125) mesh with each other. A first contact block (126) is connected between the lead screws (124) in a threaded manner. The first contact plate (7) can rotate to contact the first contact block (126), causing the first contact block (126) to drive the sorting frame (92) to move downward.

4. The fine ore screening device for tungsten ore processing according to claim 3, characterized in that, It further includes a pressing-down mechanism (13) for pressing down the first shielding plate (94). The pressing-down mechanism (13) includes a second contact block (131), a swinging frame (132), a limiting frame (133), a moving rod (134), a torsion spring (135) and a second contact rod (136). A second contact block (131) is connected to the other side of the scraper (102). A swinging frame (132) is rotatably connected to the sorting frame (1). The swinging frame (132) is located on the other side of the fixed block (4). A limiting frame (133) is connected to the sorting frame (1). The limiting frame (133) is located on one side of the swinging frame (132). A moving rod (134) is slidably connected to the limiting frame (133). The movement of the second contact block (131) can contact the moving rod (134), causing the moving rod (134) to move and contact the swinging frame (132). A torsion spring (135) is sleeved on one side of the swinging frame (132). The two ends of the torsion spring (135) are respectively connected to the swinging frame (132) and the sorting frame (1). A second contact rod (136) is connected to the first shielding plate (94). The second contact rod (136) is located on one side of the first contact rod (113). The rotation of the swinging frame (132) can contact the second contact rod (136), causing the second contact rod (136) to drive the first shielding plate (94) to move downward.

5. The fine ore screening device for tungsten ore processing according to claim 4, characterized in that, It further includes a blocking mechanism (14) for blocking tungsten ore. The blocking mechanism (14) includes a feeding frame (141) and a blocking plate (142). A feeding frame (141) is connected to the upper part of the sorting frame (1). A blocking plate (142) is rotatably connected to the lower part of the sorting frame (1). The blocking plate (142) is used to block the falling of tungsten ore.

6. The fine ore screening device for tungsten ore processing according to claim 5, characterized in that, It further includes a partition plate (41). At least two groups of partition plates (41) for isolating tungsten ore are connected to the sorting plate (3). The number of partition plates (41) in each group is at least two. The partition plates (41) are slidably connected to the sorting frame (1).

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