A mineral processing equipment

Abstract

The invention provides a mineral processing equipment, which relates to the field of mineral processing equipment, and comprises a ball mill main body, a circulating feed hopper, a mineral processing connecting frame, a mineral processing screening cylinder, a screening material piece, a mineral processing support frame, a mineral processing circulation mechanism and a screening auxiliary mechanism; the circulating feed hopper is arranged above the rear end feed port of the ball mill main body; the mineral processing connecting frame is rotatably connected to the front of the ball mill main body; the mineral processing screening cylinder is rotatably connected to the front end of the mineral processing connecting frame; the screening material piece is rotatably connected to the front end of the mineral processing screening cylinder; the mineral processing support frame is fixedly connected to the front end of the screening material piece; the mineral processing circulation mechanism is arranged on the left side of the ball mill main body; the screening auxiliary mechanism is arranged at the front end of the ball mill main body, so as to realize the beating of the mineral processing screening cylinder, avoid the ore blocking the mesh of the mineral processing screening cylinder, improve the ore processing efficiency, and solve the problem that when the ore is screened, the ore crushing slag is easy to block the mesh of the screening net, resulting in affecting the screening efficiency of the screening net.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral processing equipment, and in particular to mineral processing equipment. Background Art

[0002] When mining ore, it is generally necessary to first use a crusher to break the ore into particles of appropriate size, then use a ball mill to further grind the ore, and then use a screening machine to screen the ore powder after grinding, and finally use a dehydration device to remove excess water in the ore. However, after screening the ore, workers need to put the larger ore collected after screening back into the ball mill for re-grinding, resulting in low ore screening efficiency. At the same time, when screening the ore, the ore debris is easy to block the mesh of the screening net, which affects the screening efficiency of the screening net. Summary of the invention

[0003] In view of this, the present invention provides a mineral processing equipment, which realizes multiple cycle grinding of ore, improves the processing quality of ore, realizes the beating of the mineral processing screening cylinder, avoids the ore blocking the mesh of the mineral processing screening cylinder, ensures the stable operation of ore screening, realizes the cleaning of the upper end surface of the mineral processing guide plate, avoids the mineral powder sticking to the mineral processing guide plate, ensures the stable discharge of the mineral powder, and improves the ore processing efficiency.

[0004] The present invention provides a purpose and function of a mineral processing equipment, including a ball mill body, a circulating feed hopper, a mineral processing connecting frame, a mineral processing screening cylinder, a screening material discharging member, a mineral processing supporting frame, a mineral processing guide plate, a mineral processing circulation mechanism and a screening auxiliary mechanism;

[0005] A feed inlet structure is provided at the upper rear end of the ball mill body;

[0006] The circulating feed hopper is arranged above the rear end feed port of the ball mill body;

[0007] The ore dressing connection frame is rotatably connected to the front of the ball mill body;

[0008] The ore dressing screening cylinder is rotatably connected to the front end of the ore dressing connecting frame, and a plurality of groups of mesh structures are arranged on the outer periphery of the ore dressing screening cylinder;

[0009] The screened material piece is rotatably connected to the front end of the ore dressing screening cylinder;

[0010] The ore dressing support frame is fixedly connected to the front end of the screened material;

[0011] The ore dressing guide plate is an inclined plate structure, and the ore dressing guide plate is fixedly connected to the lower end of the ore dressing support frame;

[0012] The ore dressing circulation mechanism is arranged on the left side of the ball mill body;

[0013] The screening auxiliary mechanism is arranged at the front end of the ball mill body.

[0014] Further, the mineral processing circulation mechanism comprises: a first conveyor belt;

[0015] The first conveyor belt is fixedly connected to the left side of the ore dressing and screening cylinder.

[0016] Furthermore, the mineral processing circulation mechanism also includes: a circulation collection box and a second conveyor belt;

[0017] The circulation collection box is fixedly connected to the rear end of the first conveyor belt, and an opening structure is arranged above the circulation collection box.

[0018] The second conveyor belt is fixedly connected to the left rear end of the ball mill body, the second conveyor belt is inclined, the upper end of the second conveyor belt is arranged above the circulation feed hopper, and the lower end of the second conveyor belt is arranged inside the circulation collection box.

[0019] Furthermore, the mineral processing circulation mechanism also includes: a circulation baffle plate;

[0020] The circulating material baffle plate is arranged inside the feed port of the ball mill body, and the circulating material baffle plate is an arc-shaped plate structure.

[0021] Furthermore, the mineral processing circulation mechanism also includes: a material blocking guide rod and a material blocking return spring;

[0022] The material blocking guide rods are provided with two groups in total, and the two groups of material blocking guide rods are respectively fixedly connected to the inside of the feed inlet of the ball mill body, and the circulating material blocking plate is slidably connected to the outer periphery of the material blocking guide rods;

[0023] There are two groups of material blocking reset springs, which are respectively arranged on the outer periphery of the material blocking guide rod, the lower ends of the two groups of material blocking reset springs are fixedly connected to the material blocking guide rod, and the upper ends of the two groups of material blocking reset springs are fixedly connected to the feed port of the ball mill body.

[0024] Further, the screening auxiliary mechanism includes: a screening drive motor, a first screening gear and a second screening gear;

[0025] The screening drive motor is fixedly connected to the front end of the ore dressing support frame;

[0026] The first screening gear is coaxially fixedly connected to the outer periphery of the mineral processing screening cylinder;

[0027] The second screening gear is coaxially fixedly connected to the rear end of the rotating shaft of the screening drive motor, and the second screening gear is meshed with the first screening gear.

[0028] Furthermore, the screening auxiliary mechanism also includes: a conveying bolt shaft core, a conveying discharge port and a conveying guide plate;

[0029] The outer periphery of the conveying bolt shaft core is provided with a spiral blade structure, and the conveying bolt shaft core is fixedly connected to the rear end of the screened material pieces;

[0030] The conveying outlet is opened on the left side of the screening material;

[0031] The conveying guide plate is fixedly connected to the left side of the conveying discharge port.

[0032] Furthermore, the screening auxiliary mechanism also includes: a screening anti-blocking belt;

[0033] The screening anti-blocking belts are provided with multiple groups, all of which are belt structures, and the multiple groups of screening anti-blocking belts are respectively fixedly connected to the outer periphery of the rotating shaft of the screening drive motor.

[0034] Furthermore, the screening auxiliary mechanism also includes: a scraping drive motor, a scraping drive roller, a scraping conveyor belt, a scraping fixing member, a scraping extrusion spring and a scraping plate;

[0035] The scraping drive motor is fixedly connected to the left side of the ore dressing guide plate;

[0036] The scraping drive rollers are provided with two groups in total, and the two groups of scraping drive rollers are respectively rotatably connected to the inner side of the mineral processing guide plate, wherein the scraping drive rollers of the right group are coaxially fixedly connected to the rotating shaft of the scraping drive motor;

[0037] The scraping conveyor belts are provided with two groups in total, and the two groups of scraping conveyor belts are respectively connected to the front and rear ends of the outer periphery of the scraping driving roller;

[0038] The scraping fixing member is fixedly connected between the two groups of scraping conveyor belts, and a slide groove structure is arranged at the lower end of the scraping fixing member;

[0039] The scraping and squeezing springs are provided in multiple groups, and the multiple groups of scraping and squeezing springs are respectively fixedly connected inside the sliding groove of the scraping fixing member;

[0040] The scraping plate is slidably connected inside the slide groove of the scraping fixing member, the upper end of the scraping plate is fixedly connected to the scraping extrusion spring, and the lower end of the scraping plate is in friction contact with the upper end surface of the ore dressing guide plate.

[0041] Beneficial Effects

[0042] The present invention sets a mineral processing circulation mechanism, wherein the ore is placed in a ball mill body, the ball mill body grinds the ore, and then the ground ore enters a mineral processing screening cylinder for screening, the screened ore falls above a mineral processing guide plate, and at the same time, larger ore falls above a first conveyor belt, the first conveyor belt conveys the larger ore to a circulation collection box, and then the second conveyor belt re-conveys the ore to a circulation feed hopper, thereby achieving multiple circulation grinding of the ore and improving the processing quality of the ore.

[0043] The present invention turns on the screening drive motor through the setting of the screening auxiliary mechanism. The rotation of the rotating shaft of the screening drive motor drives the second screening gear to rotate. The rotation of the second screening gear drives the first screening gear to rotate. The rotation of the first screening gear drives the ore dressing screening drum to rotate. The rotation of the ore dressing screening drum realizes the screening of ore. At the same time, the rotation of the rotating shaft of the screening drive motor also drives the rotation of the screening anti-blocking belt. The rotation of the screening anti-blocking belt realizes the beating of the ore dressing screening drum, avoids the ore from blocking the mesh of the ore dressing screening drum, and ensures the stable operation of ore screening.

[0044] The present invention turns on the scraping drive motor through the setting of the screening auxiliary mechanism, and the rotation of the rotating shaft of the scraping drive motor drives the scraping drive roller to rotate, the rotation of the scraping drive roller drives the scraping conveyor belt to rotate, the rotation of the scraping conveyor belt drives the scraping fixed part to move back and forth, the left and right reciprocating movement of the scraping fixed part drives the scraping plate to move back and forth, at this time, the scraping plate cleans the upper end surface of the ore dressing guide plate, avoids the ore powder from sticking to the ore dressing guide plate, ensures the stable discharge of the ore powder, and improves the ore processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0046] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0047] In the attached picture:

[0048] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0049] Figure 2 It is a schematic diagram of the second conveyor belt structure of an embodiment of the present invention.

[0050] Figure 3 It is a schematic diagram of the structure of the screening anti-blocking belt of an embodiment of the present invention.

[0051] Figure 4 It is a schematic diagram of the conveying bolt shaft core structure of an embodiment of the present invention.

[0052] Figure 5 It is a schematic diagram of the structure of a scraping drive motor according to an embodiment of the present invention.

[0053] Figure 6 Schematic diagram of the structure of the screening auxiliary mechanism according to an embodiment of the present invention.

[0054] Figure 7 It is a schematic diagram of the first conveyor belt structure of an embodiment of the present invention.

[0055] Figure 8 It is a schematic diagram of the structure of the mineral processing circulation mechanism of an embodiment of the present invention.

[0056] Reference numerals list

[0057] 1. Ball mill body; 101. First conveyor belt; 102. Circulation collection box; 103. Second conveyor belt; 104. Circulation baffle plate; 105. Baffle guide rod; 106. Baffle reset spring; 2. Circulation feed hopper; 3. Mineral processing connecting frame; 4. Mineral processing screening cylinder; 401. Screening drive motor; 402. First screening gear; 403. Second screening gear; 404. Conveying bolt shaft core; 405. Conveying outlet; 406. Conveying guide plate; 407. Screening anti-blocking belt; 408. Scraping drive motor; 409. Scraping drive roller; 410. Scraping conveyor belt; 411. Scraping fixing piece; 412. Scraping extrusion spring; 413. Scraping plate; 5. Screening discharge piece; 6. Mineral processing support frame; 7. Mineral processing guide plate. DETAILED DESCRIPTION

[0058] Example 1: Please refer to Figures 1 to 8 As shown:

[0059] The present invention provides a mineral processing equipment, comprising a ball mill body 1, a circulating feed hopper 2, a mineral processing connecting frame 3, a mineral processing screening cylinder 4, a screening material discharging member 5, a mineral processing supporting frame 6, a mineral processing guide plate 7 and a mineral processing circulation mechanism;

[0060] A feed inlet structure is provided at the upper rear end of the ball mill body 1;

[0061] The circulating feed hopper 2 is arranged above the rear end feed port of the ball mill body 1;

[0062] The ore dressing connection frame 3 is rotatably connected to the front of the ball mill body 1;

[0063] The ore dressing screening cylinder 4 is rotatably connected to the front end of the ore dressing connecting frame 3, and a plurality of mesh structures are arranged on the outer periphery of the ore dressing screening cylinder 4;

[0064] The screened material 5 is rotatably connected to the front end of the mineral processing screening cylinder 4;

[0065] The ore dressing support frame 6 is fixedly connected to the front end of the screened material 5;

[0066] The ore dressing guide plate 7 is an inclined plate structure, and the ore dressing guide plate 7 is fixedly connected to the lower end of the ore dressing support frame 6;

[0067] The ore dressing circulation mechanism is arranged on the left side of the ball mill body 1 .

[0068] The mineral processing circulation mechanism includes: a first conveyor belt 101, a circulation collection box 102, a second conveyor belt 103, a circulation material blocking plate 104, a material blocking guide rod 105 and a material blocking return spring 106;

[0069] The first conveyor belt 101 is fixedly connected to the left side of the ore dressing screening cylinder 4;

[0070] The circulation collection box 102 is fixedly connected to the rear end of the first conveyor belt 101, and an opening structure is provided above the circulation collection box 102.

[0071] The second conveyor belt 103 is fixedly connected to the left rear end of the ball mill body 1, and the second conveyor belt 103 is tilted, the upper end of the second conveyor belt 103 is arranged above the circulating feed hopper 2, and the lower end of the second conveyor belt 103 is arranged inside the circulating collection box 102;

[0072] The circulating material baffle plate 104 is arranged inside the feed port of the ball mill body 1, and the circulating material baffle plate 104 is an arc-shaped plate structure;

[0073] There are two groups of material blocking guide rods 105, which are respectively fixedly connected to the inside of the feed port of the ball mill body 1, and the circulating material blocking plate 104 is slidably connected to the outer periphery of the material blocking guide rods 105;

[0074] There are two groups of material blocking return springs 106, which are respectively arranged on the outer periphery of the material blocking guide rod 105, and the lower ends of the two groups of material blocking return springs 106 are fixedly connected to the material blocking guide rod 105, and the upper ends of the two groups of material blocking return springs 106 are fixedly connected to the feed port of the ball mill body 1.

[0075] During use, the ore is placed in the ball mill body 1, and the ball mill body 1 grinds the ore. The ground ore then enters the ore dressing screening cylinder 4 for screening. The screened ore falls above the ore dressing guide plate 7, and at the same time, the larger ore falls above the first conveyor belt 101. The first conveyor belt 101 conveys the larger ore to the inside of the circulation collection box 102, and then the ore is re-conveyed to the inside of the circulation feed hopper 2 through the second conveyor belt 103. When the ball mill body 1 rotates, it drives the circulation baffle plate 104 to rotate. When the circulation baffle plate 104 rotates to the bottom, it moves downward under the action of the baffle return spring 106, blocking the feed port of the ball mill body 1. When the circulation baffle plate 104 rotates to the top, the circulation baffle plate 104 moves downward under the action of its own weight. At this time, the ore inside the circulation feed hopper 2 re-enters the inside of the ball mill body 1 through the feed port of the ball mill body 1 for fine grinding.

[0076] Embodiment 2:

[0077] The present invention provides a mineral processing equipment, based on the first embodiment, as Figures 1 to 7 As shown, it also includes a screening auxiliary mechanism, which is arranged at the front end of the ball mill body 1.

[0078] The screening auxiliary mechanism includes: a screening drive motor 401, a first screening gear 402, a second screening gear 403, a conveying bolt shaft core 404, a conveying outlet 405, a conveying guide plate 406, a screening anti-blocking belt 407, a scraping drive motor 408, a scraping drive roller 409, a scraping conveyor belt 410, a scraping fixing member 411, a scraping extrusion spring 412 and a scraping plate 413;

[0079] The screening drive motor 401 is fixedly connected to the front end of the mineral processing support frame 6;

[0080] The first screening gear 402 is coaxially fixedly connected to the outer periphery of the mineral processing screening cylinder 4;

[0081] The second screening gear 403 is coaxially fixedly connected to the rear end of the rotating shaft of the screening driving motor 401, and the second screening gear 403 is meshed with the first screening gear 402;

[0082] The outer periphery of the conveying bolt shaft core 404 is provided with a spiral blade structure, and the conveying bolt shaft core 404 is fixedly connected to the rear end of the screened material 5;

[0083] The delivery outlet 405 is opened on the left side of the screening material 5;

[0084] The conveying guide plate 406 is fixedly connected to the left side of the conveying outlet 405;

[0085] There are multiple groups of screening anti-blocking belts 407, all of which are belt structures. The multiple groups of screening anti-blocking belts 407 are respectively fixedly connected to the outer periphery of the rotating shaft of the screening drive motor 401;

[0086] The scraping drive motor 408 is fixedly connected to the left side of the ore dressing guide plate 7;

[0087] There are two groups of scraping drive rollers 409, which are rotatably connected to the inner side of the mineral processing guide plate 7, respectively. The right group of scraping drive rollers 409 is coaxially fixedly connected to the rotating shaft of the scraping drive motor 408.

[0088] There are two groups of scraping conveyor belts 410, which are respectively connected to the front and rear ends of the outer periphery of the scraping driving roller 409;

[0089] The scraping fixing member 411 is fixedly connected between the two sets of scraping conveyor belts 410, and a slide groove structure is provided at the lower end of the scraping fixing member 411;

[0090] There are multiple groups of scraping and squeezing springs 412, and the multiple groups of scraping and squeezing springs 412 are respectively fixedly connected to the inside of the sliding groove of the scraping fixing member 411;

[0091] The scraping plate 413 is slidably connected inside the slide groove of the scraping fixing member 411 , the upper end of the scraping plate 413 is fixedly connected to the scraping extrusion spring 412 , and the lower end of the scraping plate 413 is in frictional contact with the upper end surface of the ore dressing guide plate 7 .

[0092] A mineral processing method:

[0093] When the ore is screened, the finely ground ore enters the interior of the mineral processing screening cylinder 4. At this time, the screening drive motor 401 is turned on, and the rotation shaft of the screening drive motor 401 drives the second screening gear 403 to rotate. The rotation of the second screening gear 403 drives the first screening gear 402 to rotate. The rotation of the first screening gear 402 drives the mineral processing screening cylinder 4 to rotate. The rotation of the mineral processing screening cylinder 4 realizes the screening of the ore. At the same time, the rotation of the rotating shaft of the screening drive motor 401 also drives the rotation of the screening anti-blocking belt 407. The rotation of the screening anti-blocking belt 407 realizes the beating of the mineral processing screening cylinder 4, avoids the ore blocking the mesh of the mineral processing screening cylinder 4, and ensures the stable operation of the ore screening. When the mineral processing screening cylinder 4 rotates Through the relative rotation of the ore dressing screening cylinder 4 and the conveying bolt shaft core 404, the conveying bolt shaft core 404 squeezes the larger ore to the conveying outlet 405 position, and discharges it through the conveying guide plate 406, and finally turns on the scraping drive motor 408, and the rotation of the rotating shaft of the scraping drive motor 408 drives the scraping drive roller 409 to rotate, and the rotation of the scraping drive roller 409 drives the scraping conveyor belt 410 to rotate, and the rotation of the scraping conveyor belt 410 drives the scraping fixing member 411 to reciprocate left and right, and the reciprocating movement of the scraping fixing member 411 drives the scraping plate 413 to reciprocate left and right. At this time, the scraping plate 413 realizes the cleaning of the upper end surface of the ore dressing guide plate 7, and avoids the ore powder from adhering to the ore dressing guide plate 7.

Claims

1. A mineral processing equipment, comprising a ball mill body (1), a circulating feed hopper (2), a mineral processing connecting frame (3), a mineral processing screening cylinder (4), a screening material (5), a mineral processing support frame (6), a mineral processing guide plate (7), a mineral processing circulation mechanism and a screening auxiliary mechanism; the upper rear end of the ball mill body (1) is provided with a feed inlet structure; characterized in that: The circulating feed hopper (2) is arranged above the rear end feed port of the ball mill body (1); the ore dressing connecting frame (3) is rotatably connected to the front of the ball mill body (1); the ore dressing screening cylinder (4) is rotatably connected to the front end of the ore dressing connecting frame (3), and the outer periphery of the ore dressing screening cylinder (4) is provided with a plurality of groups of mesh structures; the screening material discharging member (5) is rotatably connected to the front end of the ore dressing screening cylinder (4); the ore dressing support frame (6) is fixedly connected to the front end of the screening material discharging member (5); the ore dressing guide plate (7) is an inclined plate structure, and the ore dressing guide plate (7) is fixedly connected to the lower end of the ore dressing support frame (6); the ore dressing circulation mechanism is arranged on the left side of the ball mill body (1); the screening auxiliary mechanism is arranged on the main body of the ball mill The front end of the ball mill body (1); the ore dressing circulation mechanism also includes: a circulation baffle plate (104); the circulation baffle plate (104) is arranged inside the feed inlet of the ball mill body (1), and the circulation baffle plate (104) is an arc plate structure; the ore dressing circulation mechanism also includes: a baffle guide rod (105) and a baffle return spring (106); the baffle guide rod (105) is provided with two groups, and the two groups of baffle guide rods (105) are respectively fixedly connected to the feed inlet of the ball mill body (1), and the circulation baffle plate (104) is slidably connected to the outer periphery of the baffle guide rod (105); the baffle return spring (106) is provided with two groups, and the two groups of baffle return springs (106) are respectively provided on the baffle guide rod ( The outer periphery of the two groups of material blocking return springs (106) is fixedly connected to the material blocking guide rod (105), and the upper ends of the two groups of material blocking return springs (106) are fixedly connected to the feed port of the ball mill body (1); the screening auxiliary mechanism also includes: a screening anti-blocking belt (407); the screening anti-blocking belt (407) is provided with multiple groups, and the multiple groups of screening anti-blocking belts (407) are all belt structures, and the multiple groups of screening anti-blocking belts (407) are respectively fixedly connected to the outer periphery of the rotating shaft of the screening drive motor (401); the screening auxiliary mechanism also includes: a scraping drive motor (408), a scraping drive roller (409), a scraping conveyor belt (410), a scraping fixing member (411), a scraping extrusion spring ( 412) and a scraping plate (413); the scraping drive motor (408) is fixedly connected to the left side of the ore dressing guide plate (7); the scraping drive rollers (409) are arranged in two groups, and the two groups of scraping drive rollers (409) are respectively rotatably connected to the inner side of the ore dressing guide plate (7), wherein the right group of scraping drive rollers (409) is coaxially fixedly connected to the rotating shaft of the scraping drive motor (408); the scraping conveyor belts (410) are arranged in two groups, and the two groups of scraping conveyor belts (410) are respectively transmission-connected to the front and rear ends of the outer periphery of the scraping drive rollers (409); the scraping fixing member (411) is fixedly connected between the two groups of scraping conveyor belts (410), and a slide groove structure is arranged at the lower end of the scraping fixing member (411);The scraping and squeezing springs (412) are provided in multiple groups, and the multiple groups of scraping and squeezing springs (412) are respectively fixedly connected inside the chute of the scraping fixing member (411); the scraping plate (413) is slidably connected inside the chute of the scraping fixing member (411), the upper end of the scraping plate (413) is fixedly connected to the scraping and squeezing springs (412), and the lower end of the scraping plate (413) is in frictional contact with the upper end surface of the ore dressing guide plate (7); the screening auxiliary mechanism also includes: a screening drive motor (401), a first screening gear (402) and a second screening gear (403). ; 2. A mineral processing equipment as claimed in claim 1, characterized in that: The ore dressing circulation mechanism comprises: a first conveyor belt (101); the first conveyor belt (101) is fixedly connected to the left side of the ore dressing screening cylinder (4).

3. A mineral processing equipment as claimed in claim 2, characterized in that: The mineral processing circulation mechanism also includes: a circulation collection box (102) and a second conveyor belt (103); the circulation collection box (102) is fixedly connected to the rear end of the first conveyor belt (101), and an opening structure is arranged above the circulation collection box (102); the second conveyor belt (103) is fixedly connected to the left rear end of the ball mill body (1), the second conveyor belt (103) is inclined, the upper end of the second conveyor belt (103) is arranged above the circulation feed hopper (2), and the lower end of the second conveyor belt (103) is arranged inside the circulation collection box (102).

4. A mineral processing equipment as claimed in claim 1, characterized in that: The screening drive motor (401) is fixedly connected to the front end of the mineral processing support frame (6); the first screening gear (402) is coaxially fixedly connected to the outer periphery of the mineral processing screening cylinder (4); the second screening gear (403) is coaxially fixedly connected to the rear end of the rotating shaft of the screening drive motor (401), and the second screening gear (403) is meshed with the first screening gear (402).

5. The ore dressing equipment according to claim 1, characterized in that: The screening auxiliary mechanism further comprises: a conveying bolt shaft core (404), a conveying discharge port (405) and a conveying guide plate (406); a spiral blade structure is arranged on the periphery of the conveying bolt shaft core (404); the conveying bolt shaft core (404) is fixedly connected to the rear end of the screening discharge piece (5); the conveying discharge port (405) is opened on the left side of the screening discharge piece (5); and the conveying guide plate (406) is fixedly connected to the left side of the conveying discharge port (405).

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