Coal mill slag discharge device

Abstract

The invention discloses a coal mill slag discharge device, which relates to the coal mill slag discharge technical field, and comprises a material drop unit, including a material inlet, a main channel, a first channel, and a second channel; a ventilation unit, including a fan and an air duct; a scattering unit, including a fan wheel, a driving member, and a connecting member; a screening unit, including a screen plate, a limit plate, and a heightening block. The invention has the beneficial effects of significantly improving the coal powder recovery rate in the coal mill slag discharge process, reducing resource waste, and also avoiding the blockage problem in the slag discharge process, thereby ensuring the stability and efficiency of the coal mill operation.

Description

Technical Field

[0001] The invention relates to the technical field of coal mill slag discharge, in particular to a coal mill slag discharge device. Background Art

[0002] In modern coal-fired power plants and industrial boiler systems, coal mills, as one of the key equipment, are responsible for crushing raw coal to the required fineness to improve combustion efficiency and environmental performance. According to different working principles, coal mills are mainly divided into three types: low-speed, medium-speed and high-speed. Among them, medium-speed coal mills are widely used due to their compact structure and high energy efficiency. Common medium-speed coal mill types include flat disc mills, bowl mills, E-type grinding roller mills, etc. The core feature of these models is the use of two sets of relatively moving grinding components to refine coal blocks into coal powder through extrusion and grinding.

[0003] However, in actual operation, some technical challenges faced by coal mills cannot be ignored. The first is the loss of coal powder during the slag discharge process. Since coal often contains impurities such as stone coal and coal gangue, they are sent to the slag discharge device through the gap between the grinding discs. The grinding discs are equipped with sweeping rods to remove these impurities, but in actual operation, some of the coal powder that has been ground into fine powder will form coal lumps and mix with impurities again due to adhesion, and will be mistaken for waste and discharged from the system, resulting in a waste of resources.

[0004] In addition, another common problem in the slag discharge process is slag accumulation. When slags of different sizes meet in the slag discharge channel, they are prone to blockage, hindering the normal slag discharge process and affecting the working efficiency and stability of the coal mill. Summary of the invention

[0005] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a coal mill slag discharge device, which can solve the problem that the coal mill slag discharge will discharge coal powder out of the system, causing waste of resources, and the problem that the slag discharge channel will be blocked.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A coal mill slag discharge device, comprising a material discharge unit, including a material inlet, a main channel arranged at the bottom of the material inlet, a first channel arranged at one side of the main channel, and a second channel arranged at the bottom of the main channel;

[0008] A ventilation unit, comprising fans arranged on both sides of the feed inlet and an air delivery pipe arranged on one side of the fan;

[0009] The air delivery pipe is directly connected to the main channel;

[0010] The breaking unit comprises a fan wheel mounted in the middle of the main channel, a driving member arranged in the middle of the fan wheel, and a connecting member arranged at the bottom of the driving member;

[0011] The screening unit comprises a screening plate obliquely arranged on the inner side of the main channel, limiting plates arranged on both sides of the screening plate, and a heightening block arranged at the bottom of the limiting plates.

[0012] As a preferred solution of the coal mill slag discharge device of the present invention, wherein: the main channel includes an operation window arranged on one side thereof, and a support frame arranged on the inner side thereof;

[0013] A support plate is arranged inside the second channel, and the elevated block is mounted on the support plate.

[0014] As a preferred solution of the coal mill slag discharge device described in the present invention, the driving member includes a rotating rod sleeved on the impeller axis, a driving wheel arranged on the outside of the rotating rod, a driven rod arranged at the bottom of the rotating rod, and a bearing sleeved on the outside of the driven rod.

[0015] As a preferred solution of the coal mill slag discharge device of the present invention, the first wind direction F' of the impeller is vertically downward;

[0016] A fixing piece is provided on the top of the fan wheel;

[0017] The fixing member is fixedly connected to the rotating rod and can fix the impeller.

[0018] As a preferred solution of the coal mill slag discharge device of the present invention, wherein: the driving wheel coincides with the axis of the rotating rod and is fixedly connected;

[0019] The bearing is sleeved on the axis of the support frame.

[0020] As a preferred solution of the coal mill slag discharge device of the present invention, wherein: the rotating rod includes an upper conical cavity arranged in its inner cavity;

[0021] The driven rod comprises a lower conical cavity with an inner cavity thereof, and an axial hole arranged at the bottom of the lower conical cavity;

[0022] Furthermore, driving teeth are arranged on the conical surfaces of the upper conical cavity and the lower conical cavity.

[0023] As a preferred solution of the coal mill slag discharge device described in the present invention, the connecting member includes a connecting rod sleeved on the inner side of the driven rod, a spring sleeved on the outer side of the connecting rod, a turning handle arranged at the bottom of the connecting rod, and a locking member at the bottom of the turning handle.

[0024] As a preferred solution of the coal mill slag discharge device of the present invention, the connecting rod includes a conical end engaged with the lower conical cavity, and an extension rod arranged at the bottom of the conical end.

[0025] As a preferred solution of the coal mill slag discharge device of the present invention, wherein: the sieve plate includes a ladder block arranged at the axis thereof;

[0026] The ladder block comprises an oscillation groove which is arranged to penetrate longitudinally, and an avoidance groove which is arranged to penetrate transversely.

[0027] As a preferred solution of the coal mill slag discharge device of the present invention, the turning handle includes an axial end fixedly connected to the extension rod, a support plate arranged on one side of the axial end, and a driving rod arranged on the other side of the support plate;

[0028] The support plate is attached to the bottom of the ladder block;

[0029] The driving rod is slidably disposed in the oscillation groove;

[0030] The extension rod is slidably disposed in the avoidance groove.

[0031] Beneficial effects of the present invention: With the setting of the dropping unit, ventilation unit, breaking unit and screening unit, the device significantly improves the coal powder recovery rate in the slag discharge process of the coal mill, reduces resource waste, and also avoids the blockage problem in the slag discharge process, thereby ensuring the stability and efficiency of the coal mill operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a cross-sectional view of the overall structure of the coal mill slag discharge device of the present invention.

[0034] Figure 2 It is a front structural sectional view of the coal mill slag discharge device of the present invention.

[0035] Figure 3 It is a partial schematic diagram of the full section of the structure of the breaking unit and the screening unit of the present invention.

[0036] Figure 4 It is an exploded schematic diagram of the connection relationship between the breaking up unit and the screening unit of the present invention.

[0037] Figure 5 For the present invention Figure 3 An enlarged schematic diagram of the connection relationship between the driving part and the connecting part at A.

[0038] Figure 6 It is a schematic diagram of the sieve plate structure of the present invention.

[0039] Figure 7 It is a schematic diagram of the bottom structure of the sieve plate of the present invention.

[0040] In the figure: 100, blanking unit; 101, feeding port; 102, main channel; 103, first channel; 104, second channel; 1021, operation window; 1022, support frame; 1041, support plate; 200, ventilation unit; 201, fan; 202, air duct; 300, scattering unit; 301, fan wheel; 302, driving member; 303, connecting member; 3011, fixing member; 3021, rotating rod; 3022, driving wheel; 3023, driven rod; 3024, bearing; 303 1. Connecting rod; 3032. Spring; 3033. Turning handle; 3034. Locking piece; 30211. Upper conical cavity; 30231. Lower conical cavity; 30232. Shaft hole; 30311. Conical end; 30312. Extension rod; 30331. Shaft end; 30332. Support plate; 30333. Driving rod; 400. Screening unit; 401. Screen plate; 402. Limiting plate; 403. Elevating block; 4011. Ladder block; 40111. Oscillation groove; 40112. Avoidance groove; 500. Driving tooth. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0044] Example 1

[0045] Reference Figure 1~Figure 2, which is the first embodiment of the present invention, and provides a coal mill slag discharge device, which includes a material discharge unit 100, including a material inlet 101, a main channel 102 arranged at the bottom of the material inlet 101, a first channel 103 arranged at one side of the main channel 102, and a second channel 104 arranged at the bottom of the main channel 102;

[0046] The ventilation unit 200 includes fans 201 disposed on both sides of the feed inlet 101 and an air delivery pipe 202 disposed on one side of the fan 201;

[0047] The air delivery pipe 202 is directly connected to the main channel 102;

[0048] The breaking unit 300 includes a fan wheel 301 mounted in the middle of the main channel 102, a driving member 302 disposed in the middle of the fan wheel 301, and a connecting member 303 disposed at the bottom of the driving member 302;

[0049] The screening unit 400 includes a screening plate 401 obliquely disposed on the inner side of the main channel 102 , limiting plates 402 disposed on both sides of the screening plate 401 , and a heightening block 403 disposed at the bottom of the limiting plates 402 .

[0050] Furthermore, the main channel 102 includes an operation window 1021 disposed on one side thereof, and a support frame 1022 disposed on the inner side thereof;

[0051] A support plate 1041 is disposed inside the second channel 104 , and the elevation block 403 is erected on the support plate 1041 .

[0052] Furthermore, the first wind direction F' of the impeller 301 is vertically downward.

[0053] It should be noted that the feed inlet 101 in this embodiment is connected to the slag outlet on the grinding disc of the slag discharger, and is used to receive the coal slag swept out by the sweeping rod of the coal mill. The feed inlet 101 is a frame-shaped structure that is wide at the top and narrow at the bottom, which is convenient for the coal slag to fall into it. A group of main channels 102 are convexly connected to the bottom of the feed inlet 101. The main channel 102 is the space for the device to process and classify the coal slag. The inner side of the main channel 102 is set up to break up the coal powder or coal blocks remaining in the coal slag. After classification by the screening unit 400, the stone coal, the hard material of coal gangue and the usable coal powder are separated.

[0054] Preferably, two groups of ventilation units 200 are set up on the two outer walls of the main channel 102. Among them, the fan 201 is fixedly connected to the two walls of the feed port 101, and the blower pipe of the fan 201 is connected to a group of air delivery pipes 202 directly reaching the main channel 102, so that the wind generated by the fan 201 is directly poured into the main channel 102 through the air delivery pipe 202. The coal slag in the main channel 102 that remains at high temperature after being processed by the coal mill can be cooled by air. The second wind direction F generated by the fan 201 enters the main channel 102 through the pipe mouth of the air delivery pipe 202, and the wind force is directed downward. In this way, not only can the cooling treatment of the coal slag be accelerated, but also the falling speed of the coal slag can be accelerated, so that it falls faster on the fan wheel 301 of the scattering unit 300, and the scattering ability of the fan wheel 301 on the coal slag is improved.

[0055] Preferably, the first wind direction F' after the impeller 301 rotates is also vertically downward, so as to prevent the coal slag processed by the impeller 301 from flowing back and accelerate it to fall to the screening unit 400, so that the screening unit 400 can quickly screen the coal slag.

[0056] In summary, the device is provided with ventilation units 200 on the two outer walls of the main channel 102, and the wind generated by the fan 201 is directly poured into the main channel 102 through the air duct 202, so as to cool the high-temperature coal slag and accelerate the falling speed of the coal slag, thereby improving the breaking efficiency of the impeller 301. The second wind direction F' after the impeller 301 rotates is also vertically downward, so as to avoid the reflux of the coal slag, further accelerate the speed at which the coal slag falls to the screening unit 400, and improve the screening efficiency.

[0057] Example 2

[0058] Reference Figure 2 and Figure 3 , which is the second embodiment of the present invention, is different from the first embodiment in that it also includes a screening unit 400, including a sieve plate 401 obliquely placed on the inner side of the main channel 102, limiting plates 402 arranged on both sides of the sieve plate 401, and a heightening block 403 arranged at the bottom of the limiting plate 402.

[0059] Furthermore, the main channel 102 includes an operation window 1021 disposed on one side thereof, and a support frame 1022 disposed on the inner side thereof;

[0060] A support plate 1041 is disposed inside the second channel 104 , and the elevation block 403 is erected on the support plate 1041 .

[0061] It should be noted that the pipeline bifurcates into two branches at the bottom of the main channel 102, one of which is an inclined first channel 103, and a second channel 104 perpendicular to the bottom of the main channel 102. The second channel 104 is perpendicular to the main channel 102 and can be used to receive coal powder, while the first channel 103 is used to receive materials such as stone coal and coal gangue.

[0062] Preferably, the scattering unit 300 in this embodiment is set on the main channel 102, and the screening unit 400 is tilted and set between the first channel 103 and the second channel 104. When the upper scattering unit 300 cuts the softer coal blocks and coal powder into pieces through the rotation force, and the stone coal, coal gangue and other materials that cannot be cut fall down, and then the first wind direction F' generated by the impeller 301 itself directly acts on the screen plate 401 after the treatment of the coal slag, so that it is screened on the screen plate 401, and the softer coal blocks and coal powder are cut into pieces and become coal powder. After the coal powder is screened by the screen plate 401, it falls into the second channel 104 at the bottom, so that the available coal powder can be collected together again, while the stone coal, coal gangue and other materials cannot be screened by the screen plate 401, and will slide into the first channel 103 on the side under the inclined setting of the screen plate. Furthermore, the coal slag processed by the coal mill has a low coal content, so most of the coal slag is unusable stone coal, coal gangue and other materials, which can slide smoothly on the screen plate 401 into the first channel 103.

[0063] Preferably, an operation window 1021 is provided on one side of the second channel 104, and one side of the operation window 1021 is hingedly provided on the side wall of the main channel 102, so that the operation window 1021 can be opened and closed, which is convenient for installing and repairing the disintegration unit 300 and the screening unit 400 set in the middle of the main channel 102. The support plate 1041 is welded on both sides of the main channel 102, and two groups of elevated blocks 403 are fixedly connected to the support plate 1041 on each side. The space where the elevated block 403 is located has a drop in level, so that the limit plate 402 padded on the elevated block 403 is tilted. The limit plate 402 is fixedly connected to the two groups of elevated blocks 403 at its bottom, and the inner side of the limit plate 402 can slide and clamp the screen plate 401.

[0064] Preferably, the elevated block 403 is an elastic pressure column in which a pressure sensor is provided. When the sieve plate 401 blocks and compresses the elevated block 403 at its bottom, the elevated block 403 will determine whether coal slag is accumulated on the surface of the sieve plate 401 through the pressure sensor, thereby alerting the staff.

[0065] In summary, the device realizes the effective separation of coal powder from impurities such as pebble coal and coal gangue by setting two branches at the bottom of the main channel 102 and combining the disintegration unit 300 and the screening unit 400. The disintegration unit 300 cuts the coal blocks into pieces by the rotation force, and at the same time generates wind direction to guide the processed materials to the screening unit 400; the screening unit 400 uses the inclined screen plate 401 to ensure that the softer coal powder can pass smoothly and fall into the second channel 104, while the hard impurities such as pebble coal cannot pass through the screen plate and slide into the first channel 103. This design significantly improves the coal powder recovery rate and reduces resource waste. It also avoids the blockage problem in the slag discharge process and ensures the stability and efficiency of the coal mill operation.

[0066] Example 3

[0067] Reference Figure 3~Figure 7 , which is the third embodiment of the present invention, is different from the previous two embodiments in that it includes a driving member 302 including a rotating rod 3021 sleeved on the axis of the impeller 301, a driving wheel 3022 arranged on the outside of the rotating rod 3021, a driven rod 3023 arranged at the bottom of the rotating rod 3021, and a bearing 3024 sleeved on the outside of the driven rod 3023.

[0068] Furthermore, the first wind direction F' of the fan wheel 301 is vertically downward;

[0069] A fixing member 3011 is provided on the top of the impeller 301;

[0070] The fixing member 3011 is fixedly connected to the rotating rod 3021 and can fix the impeller 301 .

[0071] Furthermore, the driving wheel 3022 and the rotating rod 3021 have the same axis and are fixedly connected;

[0072] The bearing 3024 is sleeved on the axis of the support frame 1022 .

[0073] Further, the rotating rod 3021 includes an upper conical cavity 30211 disposed in its inner cavity;

[0074] The driven rod 3023 includes a lower conical cavity 30231 in which an inner cavity is set, and an axial hole 30232 set at the bottom of the lower conical cavity 30231;

[0075] Furthermore, driving teeth 500 are disposed on the conical surfaces of the upper conical cavity 30211 and the lower conical cavity 30231 .

[0076] Furthermore, the connecting member 303 includes a connecting rod 3031 sleeved on the inner side of the driven rod 3023 , a spring 3032 sleeved on the outer side of the connecting rod 3031 , a turning handle 3033 arranged at the bottom of the connecting rod 3031 , and a locking member 3034 at the bottom of the turning handle 3033 .

[0077] Furthermore, the connecting rod 3031 includes a conical end 30311 engaged with the lower conical cavity 30231 , and an extension rod 30312 disposed at the bottom of the conical end 30311 .

[0078] Further, the screen plate 401 includes a ladder block 4011 disposed at the axis thereof;

[0079] The ladder block 4011 includes an oscillation groove 40111 that penetrates longitudinally, and an avoidance groove 40112 that penetrates transversely.

[0080] Furthermore, the turning handle 3033 includes an axis end 30331 fixedly connected to the extension rod 30312, a support plate 30332 disposed on one side of the axis end 30331, and a driving rod 30333 disposed on the other side of the support plate 30332;

[0081] The support plate 30332 is attached to the bottom of the ladder block 4011;

[0082] The driving rod 30333 is slidably disposed in the oscillation groove 40111;

[0083] The extension rod 30312 is slidably disposed in the avoidance groove 40112 .

[0084] It should be noted that the scattering unit 300 performs rotational scattering on the coal slag. The scattering unit 300 includes a fan wheel 301, a driving member 302 sleeved on the axis of the fan wheel 301, and a connecting member 303 at the bottom of the driving member 302. The blades of the fan wheel 301 face downward to prevent the coal slag from flowing back. The driving member 302 is the power source for the rotation of the scattering unit 300. The driving member 302 is composed of a rotating rod 3021 that is radially limited and sleeved on the axis of the fan wheel 301, a driving wheel 3022 that is also radially limited on the outside of the axis of the rotating rod 3021, a driven rod 3023 that is fixedly connected to the bottom of the rotating rod 3021, and a bearing 3024 that is slidably sleeved on the outside of the driven rod 3023. The driving wheel 3022 uses a pulley as a driving source and can be connected to a pulley of an external transmission device. A through hole specifically for connecting a belt is provided on the side wall of the main channel 102, which is convenient for external equipment to directly connect the driving wheel 3022. When the driving wheel 3022 rotates, it drives the rotating rod 3021 inside it to rotate, thereby causing the fan wheel 301 to rotate.

[0085] Preferably, the end of the rotating rod 3021 is a bolt head, which can be connected to the fixing member 3011 as a nut to fix the impeller 301 inside the rotating rod 3021. The upper end of the rotating rod 3021 is a rotating shaft with a smaller diameter, and the lower end is a cylindrical connecting disk with a larger diameter, which is connected to the driven rod 3023; the structure of the driven rod 3023 is the same as that of the rotating rod 3021, one end is a rotating shaft with a smaller diameter, and the other end is a cylindrical connecting disk with a larger diameter; the cylindrical connecting disks of the two are butted together for flange connection.

[0086] Preferably, the rotating rod 3021 has an upper conical cavity 30211 with a certain taper in the cylindrical connecting disk at the bottom thereof; and the driven rod 3023 and the rotating rod 3021 also have a lower conical cavity 30231 with the same taper in the cylindrical connecting disk. The structure is as follows: Figure 5The rotating rod 3021 and the driven rod 3023 are connected together, and the upper conical cavity 30211 and the lower conical cavity 30231 inside thereof provide a movable space for the elastic clamping of the connecting member 303. The connecting member 303 is composed of a connecting rod 3031 elastically sleeved inside the upper conical cavity 30211 and the lower conical cavity 30231, a spring 3032 sleeved outside the connecting rod 3031, a rotating handle 3033 radially limited at the bottom peripheral side of the connecting rod 3031, and a locking member 3034 at the bottom of the rotating handle 3033. The connecting rod 3031 is elastically sleeved on the inner side of the upper conical cavity 30211 and the lower conical cavity 30231, and the end conical end 30311 of the connecting rod 3031 is sleeved on the inner side of the upper conical cavity 30211 and the lower conical cavity 30231, and the outer side of the conical end 30311 is provided with a clamping tooth, which cooperates with the driving tooth 500 on the inner side of the upper conical cavity 30211 and the lower conical cavity 30231. The outer side of the conical end 30311 is clamped with a group of springs 3032, and the springs 3032 can lift the conical end 30311, and the bottom extension rod 30312 of the conical end 30311 slides through the shaft hole 30232 set at the bottom of the driven rod 3023. When the extension rod 30312 is not subjected to downward pulling force, the spring 3032 will lift up the cone end 30311 to prevent the cone end 30311 from being engaged with the driving tooth 500, causing the extension rod 30312 to rotate with the rotating rod 3021, thereby driving the bottom screen plate 401 to oscillate.

[0087] Preferably, the extension rod 30312 slides through the ladder block 4011 at the axis of the screen plate 401. In this embodiment, the screen plate 401 has a special structure, so that when the coal slag accumulates and sinks on the plate, it can follow the extension rod 30312 to sink, so that the extension rod 30312 shakes the screen plate 401 to vibrate. Among them, a group of ladder blocks 4011 are welded on the axis of the screen plate 401. When the screen plate 401 is tilted and set in the limit plate 402, the bottom of the ladder block 401 on the screen plate 401 can remain horizontal, allowing the extension rod 30312 to pass through the bottom and be perpendicular to its end face. Figure 6 As shown. On the bottom end face of the ladder block 4011, an oscillation groove 40111 is longitudinally penetrated, and an avoidance groove 40112 is transversely penetrated. An extension rod 30312 is slidably penetrated in the avoidance groove 40112, and a turning handle 3033 is clamped in a keyway on the outer side of the bottom end of the extension rod 30312. The turning handle 3033 is L-shaped, one end of which is an axis end 30331, which is connected to the keyway of the extension rod 30312; one side of the axis end 30331 is a support plate 30332, which is attached to the bottom of the ladder block 4011 and is the linkage end for the sieve plate 401 to sink. The other side of the support plate 30332 is a driving rod 30333, which faces upward and slides through the longitudinal oscillation groove 40111.

[0088] Preferably, the bottom of the extension rod 30312 is a threaded end, and the locking piece 3034 is a nut. The turning handle 3033 is sleeved on the extension rod 30312 and is limited by the locking piece 3034 so that it fits the bottom of the ladder block 4011.

[0089] When in use, the device can be divided into two working states: first, when the coal slag on the screen plate 401 normally tilts and slides into the first channel 103 on one side of the main channel 102, the spring 3032 and the raising block 403 at the bottom of the limit plate 402 are normally stressed, and the spring 3032 on the outer side of the bottom of the cone end 30311 normally lifts the cone end 30311 and the extension rod 30312, making it impossible for the driving tooth 500 to drive the cone end 30311 to rotate, the extension rod 30312 remains stationary, and the screen plate 401 also remains stationary, allowing the broken coal powder to fall normally into the second channel 104, avoiding the extension rod 30312 directly connected to the rotating rod 3021 and continuously rotating, causing the screen plate 401 to continuously vibrate and cause the coal powder to float.

[0090] Secondly, when the coal slag on the screen plate 401 cannot tilt normally and slide down to the first channel 103, causing the screen plate 401 to sink due to the accumulation of coal slag, the support plate 30332 at the bottom of the ladder block 4011 will sink under the action of the screen plate 401, thereby causing the extension rod 30312 to descend and compress the spring 3032, so that the cone end 30311 contacts the driving tooth 500, causing the extension rod 30312 to rotate. After the extension rod 30312 rotates, it will drive the turning handle 3033 to rotate, and the driving rod 30333 at one end of the turning handle 3033 will drive the oscillation groove 40111 to reciprocate along the limit plate 402, converting the circular motion of the driving rod 30333 into the reciprocating motion of the oscillation groove 40111, thereby shaking off the coal slag on the screen plate 401 into the first channel 103. However, since the screen plate 401 is arranged at an angle, when it reciprocates along the limit plate 402, it will perform relative lifting movement in the horizontal direction, and the avoidance groove 40112 arranged horizontally through it will not interfere with the reciprocating movement of the driving rod 30333 to drive the oscillation groove 40111, and will not limit the lifting movement of the bottom of the ladder block 4011. Even in the process of relative lifting movement of the ladder block 4011, the extension rod 30312 can be raised at the same time under the elastic action of the spring 3032, so as to always keep the support plate 30332 and the bottom of the ladder block 4011 in contact. Since the oscillation groove 40111 and the avoidance groove 40112 are arranged vertically and horizontally, there is an intersection between them, but the diameters of the driving rod 30333 and the oscillation groove 40111 are much larger than the avoidance groove 40112, so that they can smoothly pass through the intersection, thereby preventing the driving rod 30333 from moving to the intersection without loading and unable to drive the oscillation groove 40111 to reciprocate.

[0091] In summary, the present device effectively solves the problem of coal slag accumulation on the sieve plate 401 through the setting of the driving member 302 and the connecting member 303, as well as the sieve plate 401. When the coal slag on the sieve plate 401 cannot slide normally to the first channel 103, causing the sieve plate 401 to sink, the sinking of the sieve plate 401 will drive the support plate 30332 at the bottom of the ladder block 4011 to sink, thereby causing the extension rod 30312 to descend and compress the spring 3032. At this time, the cone end 30311 contacts the driving tooth 500, and the extension rod 30312 begins to rotate. The rotating extension rod 30312 causes the sieve plate 401 to reciprocate through the turning handle 3033 and the driving rod 30333, shaking off the coal slag on the sieve plate 401, and ensuring that it slides smoothly into the first channel 103. This not only prevents blockage caused by coal slag accumulation, but also improves the screening efficiency and ensures the stable operation of the system.

[0092] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A coal mill slag discharge device, characterized in that: include, A material dropping unit (100), comprising a material inlet (101), a main channel (102) arranged at the bottom of the material inlet (101), a first channel (103) arranged at one side of the main channel (102), and a second channel (104) arranged at the bottom of the main channel (102); A ventilation unit (200) comprising fans (201) arranged on both sides of the feed inlet (101) and an air delivery pipe (202) arranged on one side of the fan (201); The air delivery pipe (202) is directly connected to the main channel (102); The breaking unit (300) comprises a fan wheel (301) mounted in the middle of the main channel (102), a driving member (302) arranged in the middle of the fan wheel (301), and a connecting member (303) arranged at the bottom of the driving member (302); The screening unit (400) comprises a screening plate (401) obliquely arranged on the inner side of the main channel (102), limit plates (402) arranged on both sides of the screening plate (401), and a heightening block (403) arranged at the bottom of the limit plates (402); The driving member (302) comprises a rotating rod (3021) sleeved on the axis of the impeller (301), a driving wheel (3022) arranged outside the rotating rod (3021), a driven rod (3023) arranged at the bottom of the rotating rod (3021), and a bearing (3024) sleeved on the outside of the driven rod (3023); The rotating rod (3021) comprises an upper conical cavity (30211) arranged in its inner cavity; The driven rod (3023) comprises a lower conical cavity (30231) whose inner cavity is provided, and an axial hole (30232) provided at the bottom of the lower conical cavity (30231); Furthermore, driving teeth (500) are provided on the conical surfaces of the upper conical cavity (30211) and the lower conical cavity (30231); The connecting member (303) comprises a connecting rod (3031) sleeved on the inner side of the driven rod (3023), a spring (3032) sleeved on the outer side of the connecting rod (3031), a turning handle (3033) arranged at the bottom of the connecting rod (3031), and a locking member (3034) at the bottom of the turning handle (3033); The connecting rod (3031) comprises a cone end (30311) that is clamped with the lower cone cavity (30231), and an extension rod (30312) disposed at the bottom of the cone end (30311).

2. The coal mill slag discharge device according to claim 1, characterized in that: The main channel (102) comprises an operation window (1021) arranged on one side thereof, and a support frame (1022) arranged on the inner side thereof; A support plate (1041) is provided inside the second channel (104), and the elevated block (403) is mounted on the support plate (1041).

3. The coal mill slag discharge device according to claim 2, characterized in that: The first wind direction F' of the fan wheel (301) is vertically downward; A fixing member (3011) is provided on the top of the impeller (301); The fixing member (3011) is fixedly connected to the rotating rod (3021) and is capable of fixing the impeller (301).

4. The coal mill slag discharge device according to claim 3, characterized in that: The driving wheel (3022) and the rotating rod (3021) have an axis that coincides with each other and are fixedly connected; The bearing (3024) is sleeved on the axis of the support frame (1022).

5. The coal mill slag discharge device according to claim 4, characterized in that: The sieve plate (401) comprises a ladder block (4011) arranged at the axis thereof; The ladder block (4011) comprises an oscillation groove (40111) arranged to penetrate longitudinally, and an avoidance groove (40112) arranged to penetrate transversely.

6. The coal mill slag discharge device according to claim 5, characterized in that: The turning handle (3033) comprises an axis end (30331) fixedly connected to the extension rod (30312), a support plate (30332) arranged on one side of the axis end (30331), and a driving rod (30333) arranged on the other side of the support plate (30332); The support plate (30332) is in contact with the bottom of the ladder block (4011); The driving rod (30333) is slidably disposed in the oscillation groove (40111); The extension rod (30312) is slidably disposed in the avoidance groove (40112).

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