Conical anti-blocking discharging screening device

Abstract

The invention relates to the technical field of material screening, in particular to a conical anti-blocking discharging screening device which comprises a bin separating disc installed in a tube mill, a center screening plate is arranged at the center of the interior of the bin separating disc, the bin separating disc comprises a plurality of outlet supports, and inclined plates are fixedly installed at the corners of the interior of the outlet supports; a guide plate is movably installed on one side of the inner wall of each outlet support, an arc-shaped plate is arranged at the tail end of each guide plate, the inclined plates between every two adjacent sets of outlet supports, the guide plates and the arc-shaped plates form material screening ramps, screening seams exist between the guide plates and the arc-shaped plates, and adjusting structures are arranged in the outlet supports. Materials roll down through the material screening ramp, fine materials fall onto the discharging cone through a gap screening seam between the guide plate and the arc-shaped plate and fall into the center screening plate through a material leakage gap of the discharging cone, and coarse materials which do not pass through the screening seam flow to the other side of the bin separation disc along the inclined surface of the discharging cone. Screening can be carried out by changing the size of a screen seam between the guide plate and the arc-shaped plate.

Description

Technical Field

[0001] The invention relates to the technical field of material screening, in particular to a cone-shaped anti-blocking material discharging screening device. Background Art

[0002] Tube mill is a kind of grinding equipment. During the grinding process, coarse powder and fine powder are screened by fine screen plates under the pressure of material advancement, but the coarse powder and fine powder themselves are not screened in time, resulting in over-grinding of fine powder in the material and low efficiency of coarse material crushing. The tube mill is installed in the barrel of the tube mill through partition plates, and the material is screened when the tube mill rotates.

[0003] In the prior art, for example, the patent with publication number CN203124046U discloses a partition plate for a tube mill, which includes a feed end grate plate, a support frame, a discharge end grate plate, a coarse and fine material separator and a central fine screen plate assembled together, a plurality of fan-shaped feed end grate plates and a discharge end grate plate are fixed on the support frame to form a disc structure, the coarse and fine material separator and the central fine screen plate are installed in the center of the disc structure, the partition plate also includes a fine screen plate and a gravity screening frame; the support frame includes a support body and a support plate, the support plate includes a front plate fixedly connected to the feed end grate plate and a rear plate fixedly connected to the fine screen plate and the discharge end grate plate, the front plate and the rear plate are respectively arranged at the two ends of the support body; a partition is formed between the front plate and the fine screen plate.

[0004] The above structure can screen fully and quickly, but inside the tube mill, the coarseness of the materials is different. When it is necessary to screen materials of different coarsenesses, the size of the screen gap cannot be changed for screening. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a conical anti-blocking discharge screening device to solve the problem that the coarseness of materials inside the tube mill is different, and when materials of different coarsenesses need to be screened, the size of the screen gap cannot be changed for screening.

[0006] Based on the above purpose, the present invention provides a conical anti-blocking discharging screening device, comprising a partition plate installed inside a tube mill, a central sieve plate is arranged at the inner center of the partition plate, the partition plate comprises a plurality of outlet brackets, the plurality of outlet brackets are arranged in a ring shape, a discharging sieve plate is fixedly installed on one side of the plurality of outlet brackets, a discharging grate plate is installed on the discharging sieve plate, the central sieve plate is fixedly installed on the plurality of discharging grate plates, and a pressure plate is fixedly installed on the other side of the central sieve plate;

[0007] An inclined plate is fixedly installed at the inner corner of the outlet bracket, and a guide plate is movably installed on one side of the inner wall of the outlet bracket, an arc plate is arranged at the end of the guide plate, and the bottom end of the arc plate is movably connected to the inner wall of the outlet bracket, and the inclined plate, guide plate and arc plate between two adjacent groups of the outlet brackets form a screening ramp, and a screening gap is formed between the guide plate and the arc plate, and an adjustment structure is arranged inside the outlet bracket, and the adjustment structure is used to change the size of the screening gap between the guide plate and the arc plate;

[0008] The bottom ends of the plurality of outlet brackets are all provided with inclined unloading plates, and the plurality of unloading plates are combined to form an unloading cone, and a leakage gap is arranged in the unloading cone.

[0009] Preferably, a telescopic member is provided inside the unloading plate, the adjusting structure is connected to the telescopic member, and the telescopic member is used to control the leakage gap between adjacent unloading plates.

[0010] Preferably, the adjustment structure comprises a shell fixedly mounted inside the outlet bracket, wherein a lever 1 and a lever 2 are arranged inside the shell, the ends of the lever 1 and the lever 2 are hinged to each other, the top of the lever 1 abuts against the guide plate, and the top of the lever 2 abuts against the arc plate;

[0011] A micro motor is fixedly installed inside the shell, a turntable is fixedly installed at the output end of the micro motor, two sets of connecting rods are movably installed on the turntable, the ends of the connecting rods are movably connected to touch rods, a fixed seat is slidably installed outside the touch rods, the fixed seat is fixedly installed in the outlet bracket, and the separated ends of the two sets of touch rods respectively contact with the first and second shifting rods.

[0012] Preferably, a reserved opening is provided on one side of the shell close to the inclined plate and the arc plate, and the first and second levers pass through the reserved opening and abut against the inclined plate and the arc plate respectively.

[0013] Preferably, the two groups of touch rods are arranged in mirror symmetry with respect to the center of the housing, and the two groups of connecting rods are arranged in parallel and correspondingly.

[0014] Preferably, the telescopic member comprises a support and a sleeve respectively movably connected between the first lever and the second lever, the support is slidably connected inside the sleeve, a contact switch corresponding to the support is arranged inside the sleeve, and the contact switch is abutted when the sleeve and the support are compressed to the shortest.

[0015] Sub-plates are slidably installed on both sides of the inside of the unloading plate, semicircular blocks are fixedly installed on the inner side of the sub-plates, lifting rods are arranged between adjacent semicircular blocks, iron rods are fixedly installed on the top of the lifting rods, and the iron rods are slidably installed on the inner wall of the unloading plate, and an electromagnet corresponding to the iron rod is arranged inside the unloading plate, and the electromagnet is electrically connected to the contact switch.

[0016] Preferably, springs are connected between adjacent sub-plates, the sub-plates and the discharge plate are both fan-shaped structures, the lifting rod is arranged in a V-shaped structure, and both sides of the lifting rod are in contact with the semicircular blocks.

[0017] Preferably, the outlet bracket, the discharge screen plate and the discharge grate plate are arranged correspondingly, and a threaded column is arranged through the discharge screen plate, the discharge grate plate and the outlet bracket.

[0018] The beneficial effects of the present invention are as follows: the ground material in one side of the partition plate of the tube mill enters the discharge screen plate through the discharge grate plate, is lifted and guided as the tube mill rotates, and falls into the outlet bracket in the partition plate through the discharge screen plate. After preliminary screening by the discharge screen plate, the fine material rolls down through the screening ramp formed by the inclined plate, the guide plate and the arc plate between the adjacent outlet brackets, and part of the fine material falls onto the discharge cone of the discharge plate combination through the gap between the guide plate and the arc plate, and falls into the central screen plate through the leakage gap of the discharge cone.

[0019] The coarse material that does not pass through the sieve gap between the guide plate and the arc plate flows along the inclined surface of the discharge cone to the other side of the partition plate. When materials of different coarseness and fineness need to be screened, the screening is carried out by changing the size of the sieve gap between the guide plate and the arc plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 It is a rear view structural schematic diagram of the whole present invention;

[0023] Figure 3 It is a schematic diagram of the explosion structure of the present invention as a whole;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the outlet bracket of the present invention;

[0025] Figure 5 It is a front view structural schematic diagram of the partition plate of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal structure of the regulating structure of the present invention;

[0027] Figure 7 For the present invention Figure 6A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0029] The markings in the figure are: 1. partition plate; 2. center screen plate; 3. pressure plate; 4. discharge screen plate; 5. discharge grate plate; 6. outlet bracket; 7. adjustment structure; 71. shell; 72. lever one; 73. lever two; 74. fixed seat; 75. turntable; 76. micro motor; 77. connecting rod; 78. touch rod; 8. discharge plate; 9. inclined plate; 10. guide plate; 11. arc plate; 12. threaded column; 13. support column; 14. sleeve; 15. contact switch; 16. sub-plate; 17. semicircular block; 18. lifting rod; 19. iron rod; 20. electromagnet; 21. telescopic part. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the conical anti-blocking discharging screening device comprises a partition plate 1 installed inside the tube mill, a central sieve plate 2 is arranged at the inner center of the partition plate 1, the partition plate 1 comprises a plurality of outlet brackets 6, the plurality of outlet brackets 6 are arranged in a ring shape, a discharging sieve plate 4 is fixedly installed on one side of the plurality of outlet brackets 6, a discharging grate plate 5 is installed on the discharging sieve plate 4, the central sieve plate 2 is fixedly installed on the plurality of discharging grate plates 5, and a pressing plate 3 is fixedly installed on the other side of the central sieve plate 2;

[0032] An inclined plate 9 is fixedly installed at the inner corner of the outlet bracket 6, and a guide plate 10 is movably installed on one side of the inner wall of the outlet bracket 6. An arc plate 11 is arranged at the end of the guide plate 10. The bottom end of the arc plate 11 is movably connected to the inner wall of the outlet bracket 6. The inclined plate 9, the guide plate 10 and the arc plate 11 between two adjacent groups of outlet brackets 6 form a screening ramp. There is a screening gap between the guide plate 10 and the arc plate 11. An adjustment structure 7 is arranged inside the outlet bracket 6. The adjustment structure 7 is used to change the size of the screening gap between the guide plate 10 and the arc plate 11.

[0033] The bottom ends of the plurality of outlet brackets 6 are all provided with inclined discharge plates 8 , and the plurality of discharge plates 8 are combined to form a discharge cone, and a leakage gap is provided in the discharge cone.

[0034] In this embodiment, the partition plate 1 is installed inside the tube mill. The ground material in one side of the partition plate 1 of the tube mill enters the discharge screen plate 4 through the discharge grate plate 5. As the tube mill rotates, the material is lifted and guided, and passes through the discharge screen plate 4 and falls into the outlet bracket 6 in the partition plate 1. After preliminary screening by the discharge screen plate 4, the fine material rolls down through the screening ramp formed by the inclined plate 9, the guide plate 10 and the arc plate 11 between the adjacent outlet brackets 6. Some of the fine material passes through the gap sieve gap between the guide plate 10 and the arc plate 11 and falls onto the discharge cone of the discharge plate 8 combination, and falls into the central sieve plate 2 through the leakage gap of the discharge cone. The coarse material that does not pass through the sieve gap between the guide plate 10 and the arc plate 11 flows along the inclined surface of the discharge cone to the other side of the partition plate 1. When it is necessary to screen materials of different coarseness and fineness, the screening is carried out by changing the size of the sieve gap between the guide plate 10 and the arc plate 11.

[0035] As an implementation method, Figure 6 As shown, a telescopic member 21 is disposed inside the unloading plate 8 , and the adjusting structure 7 is connected to the telescopic member 21 . The telescopic member 21 is used to control the leakage gap between adjacent unloading plates 8 .

[0036] In this embodiment, the leakage gap between adjacent discharge plates 8 is controlled by the telescopic member 21, which corresponds to the change in the size of the sieve gap between the guide plate 10 and the arc plate 11, thereby achieving the screening of materials of different coarseness and fineness.

[0037] As an implementation method, Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the adjustment structure 7 includes a housing 71 fixedly mounted inside the outlet bracket 6, and a lever 1 72 and a lever 2 73 are arranged inside the housing 71. The ends of the lever 1 72 and the lever 2 73 are hinged to each other, and the top of the lever 1 72 abuts against the guide plate 10, and the top of the lever 2 73 abuts against the arc plate 11;

[0038] A micro motor 76 is fixedly installed inside the shell 71, and a turntable 75 is fixedly installed at the output end of the micro motor 76. Two sets of connecting rods 77 are movably installed on the turntable 75. The ends of the connecting rods 77 are movably connected to touch rods 78. A fixed seat 74 is slidably installed outside the touch rod 78. The fixed seat 74 is fixedly installed in the outlet bracket 6. The separated ends of the two sets of touch rods 78 respectively contact with the shift rod 1 72 and the shift rod 2 73.

[0039] In this embodiment, when it is necessary to screen materials of different coarseness and fineness, the micro motor 76 drives the turntable 75 to rotate in the housing 71, and the turntable 75 drives the connecting rod 77 to move when rotating, and the connecting rod 77 drives the touch rod 78 to slide inside the fixed seat 74, and the two groups of connecting rods 77 respectively move the lever 1 72 and the lever 2 73 away from or close to each other, and when the lever 1 72 and the lever 2 73 contact the guide plate 10 and the arc plate 11, the gap between the guide plate 10 and the arc plate 11 changes, so as to achieve the screening of materials of different coarseness and fineness;

[0040] As an implementation method, Figure 4 , Figure 5 and Figure 6 As shown, a reserved opening is provided on one side of the housing 71 close to the inclined plate 9 and the arc plate 11 , and the first lever 72 and the second lever 73 pass through the reserved opening and respectively abut against the inclined plate 9 and the arc plate 11 .

[0041] In this embodiment, lever 1 72 and lever 2 73 are used to correspond to the guide plate 10 and the arc plate 11 , and the connecting rod 77 moves lever 1 72 and lever 2 73 away from or closer to each other to change the size of the screen gap between the guide plate 10 and the arc plate 11 .

[0042] As an implementation method, Figure 4 , Figure 5 and Figure 6 As shown, the two groups of contact rods 78 are arranged in mirror symmetry with respect to the center of the housing 71, and the two groups of connecting rods 77 are arranged in parallel and correspondingly.

[0043] In this embodiment, the touch rod 78 is driven by the connecting rod 77 so that the touch rod 78 slides inside the fixing seat 74, and can synchronously drive the first lever 72 and the second lever 73 to move.

[0044] As an implementation method, Figure 6 , Figure 7 and Figure 8 As shown, the telescopic member 21 includes a support 13 and a sleeve 14 which are respectively movably connected between the first lever 72 and the second lever 73. The support 13 is slidably connected inside the sleeve 14. A contact switch 15 corresponding to the support 13 is arranged inside the sleeve 14. When the sleeve 14 and the support 13 are compressed to the shortest, they abut against the contact switch 15.

[0045] Sub-plates 16 are slidably installed on both sides of the unloading plate 8, and semicircular blocks 17 are fixedly installed on the inner side of the sub-plate 16. A lifting rod 18 is arranged between adjacent semicircular blocks 17. An iron rod 19 is fixedly installed on the top of the lifting rod 18. The iron rod 19 is slidably installed on the inner wall of the unloading plate 8. An electromagnet 20 corresponding to the iron rod 19 is arranged inside the unloading plate 8, and the electromagnet 20 is electrically connected to the contact switch 15.

[0046] There are springs connected between adjacent sub-plates 16 , the sub-plates 16 and the discharge plate 8 are both fan-shaped structures, the lifting rod 18 is a V-shaped structure, and both sides of the lifting rod 18 are in contact with the semicircular blocks 17 .

[0047] In this embodiment, the gap between the auxiliary plates 16 corresponds to the sieve gap. The support 13 moves in the sleeve 14 until it squeezes the contact switch 15, and the current inside the electromagnet 20 is turned on. The current generated by the electromagnet 20 attracts the iron rod 19 to move upward, and the iron rod 19 drives the lifting rod 18 of the V structure upward. The lifting rod 18 contacts the semicircular block 17, and the adjacent auxiliary plates 16 are pulled to move inside the discharge plate 8 under the action of the spring, thereby expanding the sieve gap between the adjacent auxiliary plates 16, so that part of the fine material passes through the gap sieve gap between the guide plate 10 and the arc plate 11 and falls onto the discharge cone of the discharge plate 8 combination.

[0048] As an implementation method, Figure 1 , Figure 2 , Figure 3 As shown, the outlet bracket 6 , the discharging screen plate 4 and the discharging grate plate 5 are arranged correspondingly, and a threaded column 12 is arranged through the discharging screen plate 4 , the discharging grate plate 5 and the outlet bracket 6 .

[0049] In this embodiment, multiple outlet brackets 6, discharge screen plates 4 and discharge grate plates 5 distributed in a circular array are installed correspondingly to facilitate differentiation and disassembly. When internal maintenance and cleaning are required, a single outlet bracket 6, discharge screen plate 4 and discharge grate plate 5 are disassembled and cleaned.

[0050] Working principle: When in use, the partition plate 1 is installed inside the tube mill. The ground material in one side of the partition plate 1 of the tube mill passes through the discharging grate plate 5 and enters the discharging screen plate 4. As the tube mill rotates, the material is lifted and guided, and passes through the discharging screen plate 4 and falls into the outlet bracket 6 in the partition plate 1. After preliminary screening by the discharging screen plate 4, the fine material rolls down through the screening ramp formed by the inclined plate 9, the guide plate 10 and the arc plate 11 between the adjacent outlet brackets 6. Part of the fine material passes through the gap between the guide plate 10 and the arc plate 11 and falls onto the discharge cone of the discharge plate 8 combination, and falls into the central screen plate 2 through the leakage gap of the discharge cone. The coarse material that does not pass through the screening gap between the guide plate 10 and the arc plate 11 flows to the other side of the partition plate 1 along the inclined surface of the discharge cone.

[0051] When it is necessary to screen materials of different coarseness and fineness, the micro motor 76 drives the turntable 75 to rotate in the housing 71, and the turntable 75 drives the connecting rod 77 to move when rotating, and the connecting rod 77 drives the touch rod 78 to slide inside the fixed seat 74, and the two groups of connecting rods 77 respectively move the lever 1 72 and the lever 2 73 away from or close to each other, and when the lever 1 72 and the lever 2 73 contact the guide plate 10 and the arc plate 11, the gap between the guide plate 10 and the arc plate 11 changes, so that the screening of materials of different coarseness and fineness is achieved;

[0052] When the gap between the guide plate 10 and the arc plate 11 changes, the two sets of connecting rods 77 respectively push the lever 1 72 and the lever 2 73 to approach each other, and the gap between the guide plate 10 and the arc plate 11 reaches the maximum, and the pillar 13 moves in the sleeve 14 until it squeezes the contact switch 15, and the current inside the electromagnet 20 is turned on. The current generated by the electromagnet 20 attracts the iron rod 19 to move upward, and the iron rod 19 drives the lifting rod 18 of the V structure upward. The lifting rod 18 contacts the semicircular block 17 and pulls the adjacent sub-plate 16 to move inside the discharge plate 8 under the action of the spring, thereby expanding the sieve gap between the adjacent sub-plates 16, so that part of the fine material passes through the gap sieve gap between the guide plate 10 and the arc plate 11 and falls on the discharge cone of the discharge plate 8 combination, and falls into the central sieve plate 2 through the leakage gap of the discharge cone, while the coarse material that does not pass through the sieve gap between the guide plate 10 and the arc plate 11 flows to the other side of the partition plate 1 along the inclined surface of the discharge cone.

[0053] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0054] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A conical anti-blocking discharging screening device, comprising a partition plate (1) installed inside a tube mill, wherein a central sieve plate (2) is arranged at the inner center of the partition plate (1), characterized in that: The compartment plate (1) comprises a plurality of outlet brackets (6), the plurality of outlet brackets (6) are arranged in a ring shape, a discharge screen plate (4) is fixedly mounted on one side of the plurality of outlet brackets (6), a discharge grate plate (5) is mounted on the discharge screen plate (4), a central screen plate (2) is fixedly mounted on the plurality of discharge grate plates (5), and a pressure plate (3) is fixedly mounted on the other side of the central screen plate (2); An inclined plate (9) is fixedly installed at the inner corner of the outlet bracket (6), and a guide plate (10) is movably installed on one side of the inner wall of the outlet bracket (6); an arc plate (11) is arranged at the end of the guide plate (10); the bottom end of the arc plate (11) is movably connected to the inner wall of the outlet bracket (6); the inclined plate (9), the guide plate (10) and the arc plate (11) between two adjacent groups of the outlet brackets (6) form a screening ramp; a screening gap exists between the guide plate (10) and the arc plate (11); an adjustment structure (7) is arranged inside the outlet bracket (6); the adjustment structure (7) is used to change the size of the screening gap between the guide plate (10) and the arc plate (11); The bottom ends of the plurality of outlet brackets (6) are all provided with inclined discharge plates (8), and the plurality of discharge plates (8) are combined to form a discharge cone, and a material leakage gap is provided in the discharge cone.

2. The conical anti-blocking discharging screening device according to claim 1 is characterized in that: A telescopic member (21) is arranged inside the discharge plate (8), the adjustment structure (7) is connected to the telescopic member (21), and the telescopic member (21) is used to control the leakage gap between adjacent discharge plates (8).

3. The conical anti-blocking discharging screening device according to claim 2 is characterized in that: The adjustment structure (7) comprises a shell (71) fixedly mounted inside the outlet bracket (6), a lever 1 (72) and a lever 2 (73) are arranged inside the shell (71), the ends of the lever 1 (72) and the lever 2 (73) are hinged to each other, the top of the lever 1 (72) contacts the guide plate (10), and the top of the lever 2 (73) contacts the arc plate (11); A micro motor (76) is fixedly mounted inside the housing (71), a rotating disk (75) is fixedly mounted on the output end of the micro motor (76), two groups of connecting rods (77) are movably mounted on the rotating disk (75), the ends of the connecting rods (77) are movably connected to a touch rod (78), a fixed seat (74) is slidably mounted outside the touch rod (78), the fixed seat (74) is fixedly mounted in the outlet bracket (6), and the separated ends of the two groups of touch rods (78) are respectively in contact with the first shift rod (72) and the second shift rod (73).

4. The conical anti-blocking discharging screening device according to claim 3 is characterized in that: A reserved opening is provided on one side of the housing (71) close to the inclined plate (9) and the arc plate (11), and the first shifting rod (72) and the second shifting rod (73) pass through the reserved opening and respectively contact the inclined plate (9) and the arc plate (11).

5. The conical anti-blocking discharging screening device according to claim 3 is characterized in that: The two groups of contact rods (78) are arranged in mirror symmetry with respect to the center of the housing (71), and the two groups of connecting rods (77) are arranged in parallel and correspondingly.

6. The conical anti-blocking discharging screening device according to claim 2 is characterized in that: The telescopic member (21) comprises a support (13) and a sleeve (14) which are respectively movably connected between the first lever (72) and the second lever (73); the support (13) is slidably connected inside the sleeve (14); a contact switch (15) corresponding to the support (13) is arranged inside the sleeve (14); when the sleeve (14) and the support (13) are compressed to the shortest, the contact switch (15) is abutted; Sub-plates (16) are slidably mounted on both sides of the interior of the discharge plate (8), semicircular blocks (17) are fixedly mounted on the inner side of the sub-plate (16), a lifting rod (18) is arranged between adjacent semicircular blocks (17), an iron rod (19) is fixedly mounted on the top of the lifting rod (18), the iron rod (19) is slidably mounted on the inner wall of the discharge plate (8), an electromagnet (20) corresponding to the iron rod (19) is arranged inside the discharge plate (8), and the electromagnet (20) is electrically connected to the contact switch (15).

7. The conical anti-blocking discharging screening device according to claim 6 is characterized in that: Springs are connected between adjacent sub-plates (16); the sub-plates (16) and the discharge plate (8) are both fan-shaped structures; the lifting rod (18) is a V-shaped structure; both sides of the lifting rod (18) are in contact with the semicircular blocks (17).

8. The conical anti-blocking discharging screening device according to claim 1 is characterized in that: The outlet bracket (6), the discharge screen plate (4) and the discharge grate plate (5) are arranged correspondingly, and a threaded column (12) is arranged through the discharge screen plate (4), the discharge grate plate (5) and the outlet bracket (6).

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