Coal mill

Abstract

The utility model relates to a coal mill, and belongs to the technical field of cement production heat supply equipment, the coal mill comprises a feed pipe on one side of a mill body and a first sieve plate which is installed in the feed pipe and is perpendicular to the coal briquette feed direction, and the feed pipe is provided with a vibration piece for driving the first sieve plate to vibrate; and a moving assembly for pushing the first sieve plate to move is arranged on one side of the feeding pipe, a discharging opening is formed in the side, away from the moving assembly, of the feeding pipe, and a blocking plate for blocking the discharging opening is arranged at the discharging opening. The method has the effect of reducing the adverse effect on the working efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of cement production heating equipment, and in particular to a coal mill. Background Art

[0002] In the cement production process, in order to make the combustion more complete, the coal blocks are usually ground into coal powder through a coal mill, and the coal powder is used to heat the cement. Due to different specifications, when the coal blocks enter the coal mill through the feed port, the feed pipe of the coal mill is prone to blockage, and it is usually necessary to dredge the feed pipe.

[0003] The Chinese patent with the publication number CN219923171U discloses an anti-blocking coal mill, including a base and a coal mill body on the base, an anti-blocking mechanism for pre-crushing coal blocks is provided on the coal mill body, a coal grinding mechanism is provided in the coal mill body, and the anti-blocking mechanism synchronously realizes the rotation of the coal grinding mechanism through a transmission mechanism; the anti-blocking mechanism includes a processing box arranged on the coal mill body, a plurality of evenly distributed carving knives are provided in the processing box, and a feed port connected to the feed pipe in the coal mill body is provided at the bottom of the processing box. When the coal block enters the processing box, the coal block is placed on the carving knives, and the movement of the slide seat is realized by the rotation of the reciprocating screw rod, and the push plate is further controlled to move by the bracket, so that the coal block is pushed on the carving knives to cut the large-sized coal blocks.

[0004] Coal blocks have different specifications. In the related art, coal blocks of various specifications entering the feed pipe need to be cut into pieces by a carving knife. At this time, the coal mill stops working. When the carving knife cuts the coal blocks into pieces, the coal mill starts working, which easily causes a waste of time and affects work efficiency. Utility Model Content

[0005] In order to reduce the adverse effects on working efficiency, the present application provides a coal mill.

[0006] The coal mill provided in this application adopts the following technical solution:

[0007] A coal mill comprises a feed pipe on one side of a machine body and a first screen plate installed in the feed pipe and perpendicular to the feeding direction of coal blocks, the feed pipe is provided with a vibrating member for driving the first screen plate to vibrate, one side of the feed pipe is provided with a moving assembly for pushing the first screen plate to move, a discharge port is provided on a side of the feed pipe away from the moving assembly, and a sealing plate for sealing the discharge port is provided at the discharge port.

[0008] By adopting the above technical solution, the coal blocks enter the feed pipe through the upper end of the feed pipe until they contact the first screen plate. At this time, the vibrator drives the first screen plate to vibrate, and the small-sized coal blocks pass through the first screen plate and move into the machine body. The large-sized coal blocks are retained on the first screen plate. At this time, the sealing plate is driven to open the discharge port, and the moving component drives the first screen plate to move the large-sized coal blocks toward the discharge port, thereby facilitating the separation of the large-sized coal blocks from the small-sized coal blocks and further crushing the large-sized coal blocks, reducing the adverse effects on work efficiency.

[0009] Optionally, the vibrating member includes a first hydraulic cylinder fixedly connected to the outside of the feed pipe, a telescopic rod of the first hydraulic cylinder passes through the feed pipe and abuts against the first screen plate, both sides of the inside of the feed pipe are fixedly connected with slide rails, both sides of the first screen plate are slidably connected to the slide rails, and a spring facing the first screen plate is fixedly connected to the slide rail away from the first hydraulic cylinder.

[0010] By adopting the above technical solution, the telescopic rod of the first hydraulic cylinder is extended, thereby pushing the first screen plate to move toward the spring and squeeze the spring. At this time, the spring is compressed. When the telescopic rod of the first hydraulic cylinder is shortened, the spring recovers its deformation and pushes the first screen plate to reset, thereby facilitating driving the first screen plate to vibrate, improving screening efficiency and reducing adverse effects on work efficiency.

[0011] Optionally, the blocking plate is plugged into and slidably connected to a side of the feed pipe close to the discharge port.

[0012] By adopting the above technical solution, when the sealing plate is inserted into the side of the feed pipe close to the discharge port, the discharge port is blocked, and the sealing plate is driven to move upward until it is separated from the feed pipe, thereby facilitating the opening or blocking of the discharge port and reducing the adverse effects on work efficiency.

[0013] Optionally, the moving component includes a screw that passes through the first sieve plate along the length direction of the first sieve plate and is threadedly connected to the first sieve plate, the screw is slidably and rotatably connected to the side wall of the feed pipe, and a handwheel is installed at one end of the screw.

[0014] By adopting the above technical solution, when the first screen plate vibrates, the lead screw moves with the first screen plate. When driving the first screen plate to move, the handwheel is turned to drive the lead screw to rotate. At this time, the first screen plate moves toward the discharge port, thereby facilitating the separation of large-sized coal blocks from the feed pipe through the discharge port, facilitating the crushing of large-sized coal blocks, and reducing the adverse effects on work efficiency.

[0015] Optionally, a crushing bucket perpendicular to the length direction of the screw is installed and connected to the side of the feed pipe close to the discharge port, the crushing bucket is connected to the interior of the machine body, the end of the screw close to the crushing bucket is rotatably connected to the side of the crushing bucket away from the feed pipe, the length of the slide rail is equal to the length of the feed pipe, a second screen plate is slidably connected to the lower side of the crushing bucket, the end of the second screen plate close to the screw is inclined upward, and a crushing assembly is provided at the end of the crushing bucket away from the screw.

[0016] By adopting the above technical solution, the lead screw is rotated and the first screen plate is driven to drive the large-sized coal blocks to move toward the crushing bucket until they completely enter the crushing bucket. At this time, the first screen plate is disengaged from the slide rail, and the driving hand wheel continues to rotate. At this time, the lead screw drives the first screen plate to tilt toward the end of the crushing bucket away from the lead screw. At this time, the large-sized coal blocks move along the inclined surface of the second screen plate to the crushing assembly and are further crushed, thereby improving work efficiency.

[0017] Optionally, the crushing assembly includes a movable plate arranged above the second screen plate away from one end of the lead screw, a plurality of crushing teeth facing the second screen plate are fixedly connected to the movable plate, and a driving member is provided on the movable plate.

[0018] By adopting the above technical solution, the driving member drives the movable plate to drive the crushing teeth to move toward the second screen plate until they contact and squeeze the large-sized coal blocks, thereby facilitating the crushing of the large-sized coal blocks. The crushed coal blocks pass through the second screen plate and move into the inside of the machine body, thereby improving work efficiency.

[0019] Optionally, the driving member includes a second hydraulic cylinder disposed on the upper side of the movable plate and fixedly connected to the crushing bucket, and a telescopic rod of the second hydraulic cylinder faces the movable plate and is fixedly connected to the movable plate.

[0020] By adopting the above technical solution, the second hydraulic cylinder drives the movable plate to move towards or away from the second screen plate, thereby facilitating further crushing of large-sized coal blocks, reducing the possibility of clogging of the feed pipe, and reducing the adverse effect on work efficiency.

[0021] Optionally, a third hydraulic cylinder is fixedly connected to one side of the crushing bucket and faces the second screen plate and is fixedly connected to the second screen plate.

[0022] By adopting the above technical solution, the third hydraulic cylinder drives the second screen plate to vibrate, thereby improving the screening efficiency.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The coal blocks enter the feed pipe through the upper end of the feed pipe until they contact the first screen plate. At this time, the vibrating member drives the first screen plate to vibrate, and the small-sized coal blocks all pass through the first screen plate and move into the machine body. The large-sized coal blocks are retained on the first screen plate. At this time, the blocking plate is driven to open the discharge port, and the moving component drives the first screen plate to drive the large-sized coal blocks to move toward the discharge port, so as to facilitate the separation of the large-sized coal blocks from the small-sized coal blocks and further crush the large-sized coal blocks, reducing the adverse effect on work efficiency;

[0025] 2. Turn the lead screw and drive the first screen plate to drive the large-sized coal blocks to move toward the crushing bucket until they completely enter the crushing bucket. At this time, the first screen plate is separated from the slide rail, and the driving hand wheel continues to rotate. At this time, the lead screw drives the first screen plate to tilt toward the end of the crushing bucket away from the lead screw. At this time, the large-sized coal blocks move along the inclined surface of the second screen plate to the crushing assembly and are further crushed, thereby improving work efficiency;

[0026] 3. The driving member drives the moving plate to drive the crushing teeth to move towards the second screen plate until they come into contact with and squeeze the large-sized coal blocks, thereby facilitating the crushing of the large-sized coal blocks. The crushed coal blocks pass through the second screen plate and move into the machine body, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the coal mill in the embodiment of the present application.

[0028] Figure 2 It is a structural schematic diagram showing the positional relationship between the feed pipe and the crushing bucket in the embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram showing the positional relationship between the vibrating member and the crushing bucket in the embodiment of the present application.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. Machine body; 2. Feed pipe; 21. First screen plate; 211. Baffle; 22. Slide rail; 23. Discharge port; 231. Sealing plate; 24. Waist-shaped hole; 3. Vibrating member; 31. First hydraulic cylinder; 32. Spring; 4. Moving assembly; 41. Screw; 42. Sliding block; 43. Sliding plate; 44. Hand wheel; 5. Crushing bucket; 51. Second screen plate; 52. Third hydraulic cylinder; 53. Feeding hopper; 6. Crushing assembly; 61. Moving plate; 62. Crushing teeth; 63. Second hydraulic cylinder. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The present application embodiment discloses a coal mill. Figure 1 and Figure 2A coal mill includes a body 1 and a feed pipe 2 fixedly connected to one side of the body 1 and communicating with the inside of the body 1. The upper end of the feed pipe 2 is vertical and the opening of the feed pipe 2 faces upward. A horizontal first sieve plate 21 is provided in the feed pipe 2, and a vertical baffle 211 is fixedly connected to one end of the first sieve plate 21 close to the body 1.

[0033] Reference Figure 2 and Figure 3 , horizontal slide rails 22 are fixedly connected to the two side walls of the feed pipe 2 and facing the body 1, and the sides of the slide rails 22 close to each other are inserted into the first screen plate 21. The width of the first screen plate 21 is smaller than the width of the feed pipe 2, and the first screen plate 21 is slidably connected to the slide rail 22 along the length and width direction of the slide rail 22, and the length of the slide rail 22 is equal to the length of the feed pipe 2.

[0034] Reference Figure 2 and Figure 3 A discharge port 23 adapted to the first screen plate 21 and the baffle plate 211 is provided on the side of the feed pipe 2 away from the machine body 1, and a vertical blocking plate 231 is inserted and slidably connected to the side of the feed pipe 2 close to the discharge port 23. A vibrating member 3 is provided on the side of the feed pipe 2 parallel to the slide rail 22, and a moving assembly 4 is provided on the feed pipe 2 to drive the first screen plate 21 and the baffle plate 211 to move toward the discharge port 23.

[0035] The coal blocks enter the feed pipe 2 through the upper end thereof until they contact the first screen plate 21. At this time, the vibrating member 3 drives the first screen plate 21 to vibrate, and the small-sized coal blocks all pass through the first screen plate 21 and move into the machine body 1. The large-sized coal blocks are retained on the first screen plate 21. At this time, the blocking plate 231 is driven to move upward until it is separated from the feed pipe 2, and the discharge port 23 is opened. The moving assembly 4 drives the first screen plate 21 to drive the large-sized coal blocks to move toward the discharge port 23, separating the large-sized coal blocks from the small-sized coal blocks, thereby facilitating further crushing of the large-sized coal blocks and reducing the blockage of the feed pipe 2.

[0036] Reference Figure 3 The vibrating member 3 includes a first hydraulic cylinder 31 fixedly connected to the outside of the feed pipe 2 and facing the first sieve plate 21. The telescopic rod of the first hydraulic cylinder 31 passes through the side wall of the feed pipe 2 and contacts the first sieve plate 21. A spring 32 facing the first sieve plate 21 is fixedly connected to the inner side wall of the feed pipe 2 opposite to the first hydraulic cylinder 31. The end of the spring 32 away from the inner side wall of the feed pipe 2 can contact the first sieve plate 21.

[0037] The telescopic rod of the first hydraulic cylinder 31 extends, pushing the first screen plate 21 to move toward the spring 32 and squeeze the spring 32. At this time, the spring 32 is compressed. When the telescopic rod of the first hydraulic cylinder 31 is shortened, the spring 32 recovers its deformation and pushes the first screen plate 21 to reset, thereby driving the first screen plate 21 to vibrate.

[0038] Reference Figure 2 and Figure 3 A crushing bucket 5 connected to the inside of the feed pipe 2 and arranged along the width direction of the feed pipe 2 is fixedly connected to the outer wall of the feed pipe 2 near the discharge port 23. The moving assembly 4 includes a lead screw 41 parallel to the slide rail 22. The lead screw 41 passes through the middle of the first screen plate 21 and is threadedly connected to the first screen plate 21. The side of the feed pipe 2 near the machine body 1 and the side of the crushing bucket 5 away from the machine body 1 are also provided with horizontal waist-shaped holes 24 parallel to the width direction of the first screen plate 21. The ends of the lead screw 41 pass through the corresponding waist-shaped holes 24 and are rotatably connected to the sliding block 42.

[0039] A sliding plate 43 is fixedly connected to the outer wall of the feed hopper close to the machine body 1, a sliding block 42 close to the machine body 1 is located on the sliding plate 43 and is slidably connected to the sliding plate 43, and a hand wheel 44 is installed at one end of the lead screw 41 passing through the side wall of the crushing bucket 5.

[0040] Reference Figure 1 and Figure 2 A horizontal second screen plate 51 is inserted and slidably connected to the lower side of the crushing bucket 5. The end of the second screen plate 51 close to the lead screw 41 is tilted upward. A third hydraulic cylinder 52 facing the second screen plate 51 is fixedly connected to the side of the crushing bucket 5 away from the feed pipe 2. The telescopic rod of the third hydraulic cylinder 52 passes through the crushing bucket 5 and is fixedly connected to the side wall of the second screen plate 51. A crushing assembly 6 is provided at the end of the crushing bucket 5 away from the lead screw 41. A feeding hopper 53 is fixedly connected to the lower side of the crushing bucket 5, and the lower end of the feeding hopper 53 is connected to the inner part of the lower end of the feed pipe 2.

[0041] When the first screen plate 21 vibrates, the lead screw 41 moves with the first screen plate 21. When the first screen plate 21 is driven to move, the hand wheel 44 is turned to drive the lead screw 41 to rotate. At this time, the first screen plate 21 moves toward the direction close to the discharge port 23 until it completely enters the crushing bucket 5. At this time, the first screen plate 21 is disengaged from the slide rail 22, and the driving hand wheel 44 continues to rotate. At this time, the lead screw 41 drives the first screen plate 21 to tilt toward the end of the crushing bucket 5 away from the lead screw 41 and fall on the second screen plate 51, and moves along the inclined surface of the second screen plate 51 to the crushing assembly 6 and is further crushed to reduce the blockage of the material reduction pipe.

[0042] Reference Figure 2 The crushing assembly 6 includes a horizontal moving plate 61 located above the end of the second screen plate 51 away from the lead screw 41, a plurality of crushing teeth 62 facing the second screen plate 51 are fixedly connected to the lower side of the moving plate 61, and a driving member for driving the moving plate 61 to move is provided on the upper side of the crushing bucket 5. In the embodiment of the present application, the driving member is configured as a vertical second hydraulic cylinder 63, and the telescopic rod of the second hydraulic cylinder 63 passes through the crushing bucket 5 and is fixedly connected to the middle part of the upper side of the moving plate 61.

[0043] The second hydraulic cylinder 63 drives the movable plate 61 to move toward or away from the second screen plate 51, so that the crushing teeth 62 move toward the second screen plate 51 until they come into contact with and squeeze the large-sized coal blocks, thereby facilitating the crushing of the large-sized coal blocks. The crushed coal blocks pass through the second screen plate 51 and move to the inside of the machine body 1 through the feeding hopper 53, completing the crushing of the large-sized coal blocks.

[0044] The implementation principle of a coal mill in an embodiment of the present application is as follows: coal blocks enter the feed pipe 2 through the upper end of the feed pipe 2 until they contact the first screen plate 21. At this time, the first hydraulic cylinder 31 drives the first screen plate 21 to vibrate, and small-sized coal blocks pass through the first screen plate 21 and move into the machine body 1. Large-sized coal blocks are retained on the first screen plate 21. At this time, the sealing plate 231 is driven to move upward until it is separated from the feed pipe 2, and the discharge port 23 is opened. The screw 41 drives the first screen plate 21 to drive the large-sized coal blocks to move into the crushing bucket 5, and the crushing teeth 62 further crush the large-sized coal blocks and transport them to the machine body 1, thereby reducing the blockage of the feed pipe 2.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coal mill, characterized in that: The invention comprises a feed pipe (2) on one side of a machine body (1) and a first screen plate (21) installed in the feed pipe (2) and perpendicular to the coal feeding direction; a vibrating member (3) is provided on the feed pipe (2) for driving the first screen plate (21) to vibrate; a moving assembly (4) is provided on one side of the feed pipe (2) for pushing the first screen plate (21) to move; a discharge port (23) is provided on a side of the feed pipe (2) away from the moving assembly (4); and a blocking plate (231) is provided at the discharge port (23) for blocking the discharge port (23).

2. A coal mill according to claim 1, characterized in that: The vibrating member (3) comprises a first hydraulic cylinder (31) fixedly connected to the outside of the feed pipe (2); a telescopic rod of the first hydraulic cylinder (31) passes through the feed pipe (2) and abuts against the first sieve plate (21); both sides of the inside of the feed pipe (2) are fixedly connected to slide rails (22); both sides of the first sieve plate (21) are slidably connected to the slide rails (22); and a spring (32) facing the first sieve plate (21) is fixedly connected to the slide rail (22) away from the first hydraulic cylinder (31).

3. A coal mill according to claim 2, characterized in that: The blocking plate (231) is plugged into and slidably connected to a side of the feed pipe (2) close to the discharge port (23).

4. A coal mill according to claim 3, characterized in that: The moving assembly (4) comprises a lead screw (41) which is passed through the first sieve plate (21) along the length direction of the first sieve plate (21) and is threadedly connected to the first sieve plate (21); the lead screw (41) is slidably and rotatably connected to the side wall of the feed pipe (2); and a hand wheel (44) is mounted on one end of the lead screw (41).

5. A coal mill according to claim 4, characterized in that: A crushing bucket (5) perpendicular to the length direction of the lead screw (41) is installed and connected to a side of the feed pipe (2) close to the discharge port (23). The crushing bucket (5) is connected to the inside of the machine body (1). An end of the lead screw (41) close to the crushing bucket (5) is rotatably connected to a side of the crushing bucket (5) away from the feed pipe (2). The length of the slide rail (22) is equal to that of the feed pipe (2). A second screen plate (51) is slidably connected to the lower side of the crushing bucket (5). An end of the second screen plate (51) close to the lead screw (41) is inclined upward. A crushing assembly (6) is provided at an end of the crushing bucket (5) away from the lead screw (41).

6. A coal mill according to claim 5, characterized in that: The crushing assembly (6) comprises a movable plate (61) arranged above an end of the second screen plate (51) away from the lead screw (41), a plurality of crushing teeth (62) facing the second screen plate (51) being fixedly connected to the movable plate (61), and a driving member being provided on the movable plate (61).

7. A coal mill according to claim 6, characterized in that: The driving member comprises a second hydraulic cylinder (63) arranged on the upper side of the movable plate (61) and fixedly connected to the crushing bucket (5), wherein the telescopic rod of the second hydraulic cylinder (63) faces the movable plate (61) and is fixedly connected to the movable plate (61).

8. A coal mill according to claim 7, characterized in that: A third hydraulic cylinder (52) is fixedly connected to one side of the crushing bucket (5) and faces the second screen plate (51) and is fixedly connected to the second screen plate (51).

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