Tungsten concentrate superfine fine grinding machine and fine grinding method thereof

Abstract

The invention discloses a tungsten concentrate superfine fine grinding machine and a fine grinding method thereof, and relates to the technical field of fine grinding machines. Comprising a vertical cylinder body, a transmission mechanism and a supporting frame body, the supporting frame body is installed at the top of the vertical cylinder body, an upper shaft rod is installed in the vertical cylinder body, and the transmission mechanism is located at the top of the vertical cylinder body; a side grinding component, a middle grinding component and a bottom grinding component are respectively mounted in the vertical barrel from top to bottom; the side grinding component comprises a side grinding plate and an inclined plate; frosted surfaces are arranged on the opposite sides of the hinged grinding plate and the lateral grinding plate; an adjusting component is mounted on the back side of the hinged grinding plate; the middle grinding component comprises an upper grinding plate and a lower grinding plate, and grinding teeth are arranged between the upper grinding plate and the lower grinding plate; the upper shaft rod drives the upper grinding plate to rotate; the bottom grinding component comprises a lower shaft rod, and the lower shaft rod is filled with a plurality of groups of grinding balls; and a feeding hole is formed in the upper side of the vertical cylinder body, and a discharging hole is formed in the bottom of the vertical cylinder body, so that the technical problems that the existing grinding structure is single, and grinding material loss and excessive energy consumption are easily caused by adopting a ball-milling mode are solved.

Description

Technical Field

[0001] The invention relates to the technical field of ore fine grinding, in particular to an ultrafine fine grinding machine for tungsten concentrate and a fine grinding method thereof. Background Art

[0002] Tungsten concentrate is an important tungsten ore, including wolframite and scheelite. Wolframite (Fe, Mn) WO4 contains about 76% WO3, and scheelite CaWO4 contains about 80% WO3. It is the main raw material for producing tungsten compounds such as ferrotungstate, sodium tungstate, ammonium paratungstate (APT), and ammonium metatungstate (AMT). Fine grinding of raw materials can facilitate subsequent production and processing.

[0003] The conventional fine grinding method uses a ball mill to crush and grind the material. The ball mill mainly relies on the grinding media in the cylinder, such as steel balls or ceramic balls, to impact and grind the material. For example, CN202411237850.3 is a mining ball mill with a concentrated ore feeding device, which is a ball mill structure.

[0004] However, the existing ball-mold abrasive structure has a long grinding cycle, which can easily lead to low production efficiency. On the other hand, it consumes a lot of energy. Due to the low speed and long grinding cycle of the ball mill, the energy consumption per unit output is relatively large. Secondly, most grinding processes use ceramic balls to collide throughout the process, which can easily cause damage and result in high maintenance costs. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a tungsten concentrate ultrafine grinding machine comprises a vertical cylinder, a transmission mechanism and a support frame, the top of the vertical cylinder is equipped with a support frame, an upper shaft rod is installed in the vertical cylinder, the transmission mechanism is located at the top of the vertical cylinder, and is suitable for driving the upper shaft rod to rotate;

[0006] The side grinding components, the middle grinding components and the bottom grinding components are installed in the vertical cylinder from top to bottom respectively;

[0007] The side grinding component comprises a side grinding plate and an inclined plate; the side grinding plate is fixedly installed on the inner wall of the vertical cylinder, and a hinged grinding plate is hingedly installed under the inclined plate; the hinged grinding plate and the side grinding plate are both provided with a grinding surface on the opposite side; an adjusting component is installed on the back side of the hinged grinding plate, and the adjusting component is suitable for adjusting the angle position of the hinged grinding plate under the inclined plate;

[0008] The middle grinding component comprises an upper grinding plate and a lower grinding plate, and grinding teeth are arranged between the upper grinding plate and the lower grinding plate; the upper shaft drives the upper grinding plate to rotate;

[0009] The bottom grinding member includes a lower shaft rod, and the lower shaft rod is filled with a plurality of groups of grinding balls;

[0010] A feed port is installed on the upper side of the vertical cylinder, and a discharge port is installed at the bottom; a bottom motor is installed at the bottom of the vertical cylinder, and the output shaft of the bottom motor is upward and connected to the same axis as the lower shaft rod.

[0011] In a further technical solution, the inclined plate is tilted downward toward the feed port; and a hinged grinding plate and a side plate are installed at the inclined bottom, and the side plates are fixedly installed at the bottom of the inclined plate and located on both sides of the hinged grinding plate; the upper shaft rod passes through the inclined plate, and an inclined pull groove is also installed on the inclined plate.

[0012] In a further technical solution, the transmission mechanism includes a rotating disc, on which a driving shaft is installed, and the end of the driving shaft extends out of a vertical cylinder and is installed with a driving motor; the driving motor is suitable for driving the rotating disc to rotate; a connecting rod is installed on the rotating disc, one end of the connecting rod is eccentrically hingedly installed on the rotating disc, and the other end is hinged to the side of the hinged grinding plate facing away from the lateral grinding plate.

[0013] In a further technical solution, a fixing frame is installed in the vertical cylinder, the two ends of the fixing frame are fixedly connected to the inner wall of the vertical cylinder, and a fixing ring is used in the middle part, and the fixing ring is coaxially connected to the upper shaft rod; and a flexible shaft is installed at the bottom, and the upper end of the flexible shaft is fixedly connected to the upper shaft rod; an upper support shell is installed outside the upper grinding plate, and the upper grinding plate is installed in the upper support shell by installing a slewing bearing;

[0014] A closing cylinder is installed outside the flexible shaft, and two ends of the closing cylinder are fixedly connected to the upper supporting shell and the fixing ring respectively.

[0015] In a further technical solution, the upper grinding plate and the upper supporting shell are both inclined; the upper grinding plate and the lower grinding plate are both inclined from one side of the feed port to the other side; and the outer diameter of the upper grinding plate is larger than the outer diameter of the upper supporting shell.

[0016] In a further technical solution, the lower grinding plate is fixedly installed in the vertical cylinder, and a lower liquid hole is opened at one end away from the feed inlet, and the lower liquid hole is suitable for connecting the middle grinding component and the bottom grinding component;

[0017] The lower shaft is provided with a stirring spiral blade.

[0018] In a further technical solution, a bottom box is installed at the bottom of the vertical cylinder, an inclined guide and a liquid storage tank are installed in the bottom box, a circulation pump 1 is installed outside the discharge port, the inlet of the circulation pump 1 is connected to the discharge port through an installation pipeline, and the outlet of the circulation pump 1 is connected to the inclined guide through an installation pipeline;

[0019] A spiral rod and a transmission component are installed in the inclined guideway, and the transmission component drives the spiral rod to rotate; the spiral rod is arranged upwardly and inclined; and spiral leaves are arranged on the spiral rod;

[0020] A connecting part is arranged in the liquid storage tank, and a fixing plate is arranged in the inclined guideway; the top end of the spiral rod is connected to the connecting part through a connecting bearing, and the rod body is spirally connected to the fixing plate;

[0021] A circulation pump 2 is installed outside the feed port, the inlet of the circulation pump 2 is connected to the feed port through an installation pipeline, the outlet of the circulation pump 2 is connected to the liquid storage tank through an installation pipeline, and the pipeline extends to the bottom of the liquid storage tank.

[0022] In a further technical solution, a pressure relief channel is provided at the bottom of the inclined guide channel, one end of the pressure relief channel is connected to the inclined guide channel, and the other end is connected to the liquid storage tank;

[0023] The transmission component includes a driving wheel and a driven wheel. A pusher motor is coaxially mounted outside the driving wheel, and the pusher motor is detachably mounted in the bottom box and located above the fixed plate. The driving wheel and the driven wheel are connected by a transmission belt.

[0024] In a further technical solution, the transmission mechanism includes a large-diameter gear, the bottom of which is coaxially installed with the upper shaft, and a small-diameter gear is externally meshed with the large-diameter gear; and upper motors are respectively installed on the top extending support frame, and the output end of the upper motor is coaxially connected with the small-diameter gear; and multiple groups of small-diameter gears are provided.

[0025] The fine grinding method of tungsten concentrate ultrafine grinding machine includes the following steps:

[0026] Step 1: Pour the slurry into the liquid storage tank, turn on the circulation pump 2, and pump the slurry to the feed port;

[0027] Step 2: The slurry enters the feed port, part of it enters between the hinged grinding plate and the side grinding plate, and part of it splashes onto the inclined plate, and falls back to between the hinged grinding plate and the side grinding plate along the inclined groove;

[0028] Step 3, the driving motor starts the rotating disc to rotate, continuously drives the connecting rod to drive the hinged grinding plate to rotate, and reciprocates toward the lateral grinding plate;

[0029] Step 4, the upper motor drives the small-diameter gear to drive the large-diameter gear to rotate, and multiple groups of small-diameter gears rotate synchronously in the same direction; drives the upper shaft rod located at the bottom of the large-diameter gear, and the upper shaft rod drives the flexible shaft to rotate in the fixed ring mouth, the upper and lower ends of the flexible shaft are connected in the closed cylinder through the installation position bearing, and the bottom is fixedly connected to the upper grinding plate, the upper grinding plate is fixed by the inner ring of the slewing bearing, and the outer ring of the slewing bearing is fixed to the upper support shell;

[0030] Step 5, the lower grinding plate is tilted to allow the slurry to pass through the grinding between the upper grinding plate and the lower grinding plate and enter the lower liquid hole;

[0031] Step 6, the lower shaft drives the spiral blade to stir the grinding ball to achieve abrasive;

[0032] Step 7, the circulation pump starts working, driving the slurry into the bottom box and driving the push motor to work; driving the driving wheel, driving the driven wheel through the transmission belt, and causing the spiral rod to rotate; driving the slurry into the liquid storage tank;

[0033] Step 8, the slurry at the bottom of the inclined guide channel is discharged to the liquid storage tank through the pressure relief channel;

[0034] Step 9, a sampling rod is installed outside the liquid storage tank, and the sampling rod is suitable for extracting the slurry to detect the particle size; if the particle size does not meet the standard, repeat steps 1-8 and repeat the abrasive.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention uses upper and lower side grinding components to grind the ore slurry by intermittent extrusion on the path, and then uses the middle grinding component to realize fine grinding to grind the ore slurry in sequence; and then uses the grinding balls of the high-speed bottom grinding component to grind the material body by high-speed friction extrusion. The present invention realizes superfine abrasives by multiple groups of layers of abrasives. The present invention drives the connecting rod and the hinged grinding plate through the eccentrically installed gear train to achieve reciprocating abutment toward the side grinding plate, thereby realizing abrasion. The flexible shaft setting realizes the rotation of the inclined upper grinding plate, and is supported in the upper support shell by a slewing bearing. The ore slurry pumping is realized by the screw rod in the bottom box. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a cross-sectional schematic diagram of a refiner according to Embodiment 1 of the present invention;

[0038] Figure 2 for Figure 1 A magnified view of part A;

[0039] Figure 3 for Figure 1 A magnified view of part B;

[0040] Figure 4 It is a schematic diagram of the inclined plate of the present invention;

[0041] Figure 5 is a structural diagram of a fixing frame of the present invention;

[0042] Figure 6 is a cross-sectional schematic diagram of a fine grinding machine according to embodiment 2 of the present invention;

[0043] Figure 7 for Figure 6 Enlarged view of part C;

[0044] Figure 8 for Figure 6A magnified view of the D portion;

[0045] Fig. 9 It is a schematic diagram of the meshing of the large diameter gear and the small diameter gear;

[0046] In the figure: 1, vertical cylinder; 2, support frame; 3, upper shaft; 4, lateral grinding plate; 5, inclined plate; 6, hinged grinding plate; 7, upper grinding plate; 8, lower grinding plate; 9, lower shaft; 10, grinding balls; 11, feed port; 12, discharge port; 13, bottom motor; 14, side plate; 15, rotating disc; 16, drive shaft; 18, connecting rod; 19, fixed frame; 20, fixed ring; 21, flexible shaft; 2 2. Upper support shell; 23. Slewing bearing; 24. Closing cylinder; 25. Lower liquid hole; 26. Bottom box; 27. Inclined guide; 28. Liquid storage tank; 29. ​​Circulation pump 1; 30. Screw rod; 31. Fixed plate; 32. Circulation pump 2; 33. Driving wheel; 34. Driven wheel; 35. Pushing motor; 36. Transmission belt; 37. Large diameter gear; 38. Small diameter gear; 39. Upper motor; 40. Sampling rod. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Example 1

[0049] See also Figure 1-5 The present invention provides a technical solution, a tungsten concentrate ultrafine grinding machine, comprising a vertical cylinder 1, a transmission mechanism and a support frame 2, the support frame 2 is installed on the top of the vertical cylinder 1, an upper shaft rod 3 is installed in the vertical cylinder 1, the transmission mechanism is located at the top of the vertical cylinder 1, and is suitable for driving the upper shaft rod 3 to rotate;

[0050] A side grinding component, a middle grinding component and a bottom grinding component are installed in the vertical cylinder 1 from top to bottom;

[0051] The side grinding component includes a side grinding plate 4 and an inclined plate 5; the side grinding plate 4 is fixedly installed on the inner wall of the vertical cylinder 1, and a hinged grinding plate 6 is hingedly installed under the inclined plate 5; the hinged grinding plate 6 and the side grinding plate 4 are both provided with a grinding surface on the opposite side; an adjusting component is installed on the back side of the hinged grinding plate 6, and the adjusting component is suitable for adjusting the angle position of the hinged grinding plate 6 under the inclined plate 5;

[0052] The middle grinding component includes an upper grinding plate 7 and a lower grinding plate 8, and grinding teeth are arranged between the upper grinding plate 7 and the lower grinding plate 8; the upper shaft 3 drives the upper grinding plate 7 to rotate;

[0053] The bottom grinding member includes a lower shaft 9, which is filled with a plurality of grinding balls 10; the size of the grinding balls is not limited to Figure 1 Medium size.

[0054] A feed port 11 is installed on the upper side of the vertical cylinder 1, and a discharge port 12 is installed at the bottom; a bottom motor 13 is installed at the bottom of the vertical cylinder 1, and the output shaft of the bottom motor 13 is upward and connected to the same axis as the lower shaft rod 9. The present invention uses upper and lower side grinding components to intermittently extrude the ore slurry on the path to grind it, and then uses the middle grinding component to grind the ore slurry in turn; and then the grinding balls of the high-speed bottom grinding component are used to grind the material body by high-speed friction extrusion. The present invention realizes superfine abrasives by multiple groups of layers of abrasives.

[0055] like Figure 2 As shown, the inclined plate 5 is inclined downward toward the feed port 11; and the bottom of the inclined plate is installed with a hinged grinding plate 6 and a side plate 14, the side plate 14 is fixedly installed at the bottom of the inclined plate 5 and is located on both sides of the hinged grinding plate 6; the upper shaft 3 passes through the inclined plate 5, and an oblique groove is also installed on the inclined plate 5. The transmission mechanism includes a rotating disc 15, on which a driving shaft 16 is installed, and the end of the driving shaft 16 extends out of the vertical cylinder 1 and is installed with a driving motor; the driving motor is suitable for driving the rotating disc 15 to rotate; a connecting rod 18 is installed on the rotating disc 15, one end of which is eccentrically hingedly installed on the rotating disc 15, and the other end is hinged to the side of the hinged grinding plate 6 facing away from the side grinding plate 4.

[0056] Combination Figure 3 and Figure 5 As shown, a fixing frame 19 is installed in the vertical cylinder 1, and the two ends of the fixing frame 19 are fixedly connected to the inner wall of the vertical cylinder 1, and a fixing ring 20 is adopted in the middle part, and the fixing ring 20 is coaxially connected to the upper shaft rod 3; and a flexible shaft 21 is installed at the bottom, and the upper end of the flexible shaft 21 is fixedly connected to the upper shaft rod 3; an upper supporting shell 22 is installed outside the upper grinding plate 7, and the upper grinding plate 7 is installed in the upper supporting shell 22 by installing a slewing bearing 23; a closing cylinder 24 is installed outside the flexible shaft 21, and the two ends of the closing cylinder 24 are fixedly connected to the upper supporting shell 22 and the fixing ring 20 respectively.

[0057] like Figure 1 As shown, the upper grinding plate 7 and the upper supporting shell 22 are both arranged tilted; the upper grinding plate 7 and the lower grinding plate 8 are both tilted from one side of the feed port 11 to the other side; and the outer diameter of the upper grinding plate 7 is greater than the outer diameter of the upper supporting shell 22.

[0058] The lower grinding plate 8 is fixedly installed in the vertical cylinder 1, and a lower liquid hole 25 is opened at one end away from the feed port 11, and the lower liquid hole 25 is suitable for connecting the middle grinding component and the bottom grinding component; the lower shaft 9 is provided with a stirring spiral blade.

[0059] Example 2

[0060] like Figure 6-9 As shown, it is another embodiment of the present invention. On the basis of Example 1, a bottom box 26 is installed at the bottom of the vertical cylinder 1, an inclined guide 27 and a liquid storage tank 28 are installed in the bottom box 26, and a circulating pump 29 is installed outside the discharge port 12. The inlet of the circulating pump 29 is connected to the discharge port 12 through an installation pipeline, and the outlet of the circulating pump 29 is connected to the inclined guide 27 through an installation pipeline.

[0061] A spiral rod 30 and a transmission component are installed in the inclined guide 27, and the transmission component drives the spiral rod 30 to rotate; the spiral rod 30 is arranged to be inclined upward; and spiral leaves are arranged on the spiral rod 30;

[0062] A connecting portion is provided in the liquid storage tank 28, and a fixing plate 31 is provided in the inclined guide channel 27; the top end of the spiral rod 30 is connected to the connecting portion through a connecting bearing, and the rod body is spirally connected to the fixing plate 31;

[0063] A circulation pump 2 32 is installed outside the feed port 11 , and the inlet of the circulation pump 2 32 is connected to the feed port 11 through an installation pipeline, and the outlet of the circulation pump 2 32 is connected to the liquid storage tank 28 through an installation pipeline, and the pipeline extends to the bottom of the liquid storage tank 28 .

[0064] like Figure 6 As shown, a pressure relief channel 32 is provided at the bottom of the inclined channel 27, one end of the pressure relief channel 32 is connected to the inclined channel 27, and the other end is connected to the liquid storage tank 28;

[0065] The transmission components include a driving wheel 33 and a driven wheel 34. A pusher motor 35 is coaxially mounted outside the driving wheel 33. The pusher motor 35 is detachably mounted in the bottom box 26 and is located above the fixed plate 31. The driving wheel 33 and the driven wheel 34 are connected by a transmission belt 36.

[0066] like Figure 8 and Fig. 9 As shown, the transmission mechanism includes a large diameter gear 37, the bottom of which is coaxially mounted with the upper shaft 3, and a small diameter gear 38 is meshed outside the large diameter gear 37; and upper motors 39 are respectively mounted on the top extending support frame 2, and the output end of the upper motor 39 is coaxially connected with the small diameter gear 38; and multiple groups of small diameter gears 38 are provided.

[0067] The fine grinding method of tungsten concentrate ultrafine grinding machine includes the following steps:

[0068] Step 1, pour the slurry into the liquid storage tank 28, turn on the circulation pump 2 32; pump the slurry to the feed port 11;

[0069] Step 2, the slurry enters the feed port 11, part of it enters between the hinged grinding plate 6 and the lateral grinding plate 4, and part of it splashes onto the inclined plate 5, and falls back to between the hinged grinding plate 6 and the lateral grinding plate 4 along the inclined groove;

[0070] Step 3, the driving motor starts the rotating disc 15 to rotate, and continuously drives the connecting rod 18 to drive the hinged grinding plate 6 to rotate, and reciprocate toward the lateral grinding plate 4;

[0071] Step 4, the upper motor 39 drives the small diameter gear 38 to drive the large diameter gear 37 to rotate, and the multiple groups of small diameter gears 38 rotate synchronously in the same direction; drives the upper shaft rod 3 located at the bottom of the large diameter gear 37, and the upper shaft rod 3 drives the flexible shaft 21 to rotate in the fixed ring mouth 20, the upper and lower ends of the flexible shaft 21 are connected in the closed cylinder 24 through the installation position bearing, and the bottom is fixedly connected to the upper grinding plate 7, the upper grinding plate 7 is fixed by the inner ring of the slewing bearing 23, and the outer ring of the slewing bearing 23 is fixed to the upper support shell 22;

[0072] Step 5, the lower grinding plate 8 is tilted to allow the slurry to pass through the grinding between the upper grinding plate 7 and the lower grinding plate 8 and enter the lower liquid hole 25;

[0073] Step 6, the lower shaft 9 drives the spiral blade stirring grinding ball 10 to realize grinding;

[0074] Step 7, the circulation pump 1 29 works, drives the slurry into the bottom box 26, and drives the push motor 35 to work; drives the driving wheel 33, drives the driven wheel 34 through the transmission belt 36, and makes the screw rod 30 rotate; drives the slurry into the liquid storage tank 28;

[0075] Step 8, the slurry at the bottom of the inclined guide channel 27 is discharged to the liquid storage tank 28 through the pressure relief channel 32;

[0076] Step 9, a sampling rod 40 is installed outside the liquid storage tank 28, and the sampling rod 40 is suitable for extracting the slurry to detect the particle size; if the particle size does not meet the standard, repeat steps 1-8 and repeat the abrasive.

Claims

1. Ultrafine grinding machine for tungsten concentrate, characterized in that: It comprises a vertical cylinder (1), a transmission mechanism and a support frame (2); the support frame (2) is installed on the top of the vertical cylinder (1); an upper shaft rod (3) is installed inside the vertical cylinder (1); the transmission mechanism is located at the top of the vertical cylinder (1) and is suitable for driving the upper shaft rod (3) to rotate; A side grinding component, a middle grinding component and a bottom grinding component are respectively installed from top to bottom in the vertical cylinder (1); The side grinding component comprises a side grinding plate (4) and an inclined plate (5); the side grinding plate (4) is fixedly mounted on the inner wall of the vertical cylinder (1), and a hinged grinding plate (6) is hingedly mounted under the inclined plate (5); the hinged grinding plate (6) and the side grinding plate (4) are both provided with a grinding surface on the opposite side; an adjusting component is installed on the back side of the hinged grinding plate (6), and the adjusting component is suitable for adjusting the angular position of the hinged grinding plate (6) under the inclined plate (5); The middle grinding component comprises an upper grinding plate (7) and a lower grinding plate (8), and grinding teeth are arranged between the upper grinding plate (7) and the lower grinding plate (8); the upper shaft (3) drives the upper grinding plate (7) to rotate; The bottom grinding component comprises a lower shaft (9), and the lower shaft (9) is filled with multiple groups of grinding balls (10); A feed port (11) is installed on the upper side of the vertical cylinder (1), and a discharge port (12) is installed at the bottom; a bottom motor (13) is installed at the bottom of the vertical cylinder (1), and the output shaft of the bottom motor (13) is upward and connected to the same axis as the lower shaft rod (9).

2. The tungsten concentrate ultrafine grinding machine according to claim 1, characterized in that: The inclined plate (5) is inclined downward toward the side of the feed port (11); and a hinged grinding plate (6) and a side plate (14) are installed at the inclined bottom, and the side plate (14) is fixedly installed at the bottom of the inclined plate (5) and located on both sides of the hinged grinding plate (6); the upper shaft rod (3) passes through the inclined plate (5), and an inclined groove is also installed on the inclined plate (5).

3. The ultrafine grinding machine for tungsten concentrate according to claim 1, characterized in that: The transmission mechanism comprises a rotating disc (15), on which a driving shaft (16) is mounted, the end of the driving shaft (16) extending out of the vertical cylinder (1) and mounted with a driving motor; the driving motor is suitable for driving the rotating disc (15) to rotate; a connecting rod (18) is mounted on the rotating disc (15), one end of the connecting rod (18) is eccentrically hingedly mounted on the rotating disc (15), and the other end is hingedly connected to a side of the hinged grinding plate (6) facing away from the lateral grinding plate (4).

4. The ultrafine grinding machine for tungsten concentrate according to claim 1, characterized in that: A fixing frame (19) is installed inside the vertical cylinder (1), and the two ends of the fixing frame (19) are fixedly connected to the inner wall of the vertical cylinder (1), and a fixing ring (20) is used in the middle, and the fixing ring (20) is coaxially connected to the upper shaft rod (3); and a flexible shaft (21) is installed at the bottom, and the upper end of the flexible shaft (21) is fixedly connected to the upper shaft rod (3); an upper support shell (22) is installed outside the upper grinding plate (7), and the upper grinding plate (7) is installed in the upper support shell (22) by installing a slewing bearing (23); A closing cylinder (24) is installed outside the flexible shaft (21), and two ends of the closing cylinder (24) are fixedly connected to the upper supporting shell (22) and the fixing ring (20) respectively.

5. The ultrafine grinding machine for tungsten concentrate according to claim 1, characterized in that: The upper grinding plate (7) and the upper supporting shell (22) are both arranged at an inclination; the upper grinding plate (7) and the lower grinding plate (8) are both inclined from one side of the feed inlet (11) to the other side; and the outer diameter of the upper grinding plate (7) is greater than the outer diameter of the upper supporting shell (22).

6. The ultrafine grinding machine for tungsten concentrate according to claim 1, characterized in that: The lower grinding plate (8) is fixedly installed in the vertical cylinder (1), and a lower liquid hole (25) is provided at one end away from the feed port (11), wherein the lower liquid hole (25) is suitable for connecting the middle grinding component and the bottom grinding component; The lower shaft (9) is provided with a stirring spiral blade.

7. The ultrafine grinding machine for tungsten concentrate according to claim 1, characterized in that: A bottom box (26) is installed at the bottom of the vertical cylinder (1), an inclined guide channel (27) and a liquid storage tank (28) are installed in the bottom box (26), a circulation pump (29) is installed outside the discharge port (12), an inlet of the circulation pump (29) is connected to the discharge port (12) through an installation pipeline, and an outlet of the circulation pump (29) is connected to the inclined guide channel (27) through an installation pipeline; A screw rod (30) and a transmission component are installed in the inclined guide channel (27), and the transmission component drives the screw rod (30) to rotate; the screw rod (30) is arranged to be inclined upward; and a spiral blade is arranged on the screw rod (30); A connecting portion is provided in the liquid storage tank (28), and a fixing plate (31) is provided in the inclined guide channel (27); the top end of the spiral rod (30) is connected to the connecting portion via a connecting bearing, and the rod body is spirally connected to the fixing plate (31); A second circulation pump (32) is installed outside the feed port (11), the inlet of the second circulation pump (32) is connected to the feed port (11) through an installation pipeline, the outlet of the second circulation pump (32) is connected to the liquid storage tank (28) through an installation pipeline, and the pipeline extends to the bottom of the liquid storage tank (28).

8. The ultrafine grinding machine for tungsten concentrate according to claim 1, characterized in that: A pressure relief channel (32) is provided at the bottom of the inclined channel (27), one end of the pressure relief channel (32) is connected to the inclined channel (27), and the other end is connected to the liquid storage tank (28); The transmission component comprises a driving wheel (33) and a driven wheel (34); a pushing motor (35) is coaxially mounted outside the driving wheel (33); the pushing motor (35) is detachably mounted in the bottom box (26) and is located above the fixed plate (31); the driving wheel (33) and the driven wheel (34) are connected via a transmission belt (36).

9. The ultrafine grinding machine for tungsten concentrate according to claim 1, characterized in that: The transmission mechanism comprises a large diameter gear (37), the bottom of the large diameter gear (37) is coaxially mounted with the upper shaft (3), and a small diameter gear (38) is externally meshed with the large diameter gear (37); and upper motors (39) are respectively mounted on the top extension support frame (2), and the output end of the upper motor (39) is coaxially connected with the small diameter gear (38); and a plurality of groups of small diameter gears (38) are provided.

10. The method for fine grinding of tungsten concentrate by ultrafine grinding machine is characterized in that: The following steps are involved: Step 1: Pour the ore pulp into the liquid storage tank (28), turn on the second circulation pump (32), and pump the ore pulp to the feed port (11); Step 2, the slurry enters the feed port (11), part of it enters between the hinged grinding plate (6) and the lateral grinding plate (4), and part of it splashes onto the inclined plate (5), and falls back to between the hinged grinding plate (6) and the lateral grinding plate (4) along the inclined groove; Step 3, the driving motor starts the rotating disc (15) to rotate, continuously driving the connecting rod (18) to drive the hinged grinding plate (6) to rotate, and reciprocatingly move toward the lateral grinding plate (4); Step 4, the upper motor (39) drives the small diameter gear (38) to drive the large diameter gear (37) to rotate, and the multiple groups of small diameter gears (38) rotate synchronously in the same direction; drives the upper shaft rod (3) located at the bottom of the large diameter gear (37), and the upper shaft rod (3) drives the flexible shaft (21) to rotate in the fixed ring mouth (20), the upper and lower ends of the flexible shaft (21) are connected in the closed cylinder (24) through the installation position bearing, and the bottom is fixedly connected to the upper grinding plate (7), the upper grinding plate (7) is fixed by the inner ring of the slewing bearing (23), and the outer ring of the slewing bearing (23) is fixed to the upper support shell (22); Step 5, the lower grinding plate (8) is tilted to allow the slurry to pass through the grinding between the upper grinding plate (7) and the lower grinding plate (8) and enter the lower liquid hole (25); Step 6, the lower shaft (9) drives the spiral blade to stir the grinding ball (10) to achieve grinding; Step 7, the circulation pump 1 (29) works, driving the ore pulp into the bottom box (26), and driving the push motor (35) to work; driving the driving wheel (33), driving the driven wheel (34) through the transmission belt (36), and causing the screw rod (30) to rotate; driving the ore pulp into the liquid storage tank (28); Step 8, the slurry at the bottom of the inclined guide channel (27) is discharged to the liquid storage tank (28) through the pressure relief channel (32); Step 9, a sampling rod (40) is installed outside the liquid storage tank (28), and the sampling rod (40) is suitable for extracting slurry to detect particle size; if the particle size does not meet the standard, repeat steps 1-8 and repeat the grinding.

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