Pebble coal discharging device of coal mill

Abstract

The utility model relates to the technical field of auxiliary devices of coal mills, in particular to a pebble coal discharging device of a coal mill. The slag discharging box is provided with a cavity for accommodating pebble coal, and the slag discharging box is provided with a feeding hole; the rotating sealing structure comprises a rotating assembly, a fixing assembly matched with the rotating assembly and a positioning assembly movably connected to the rotating assembly and the fixing assembly, the rotating assembly is connected with the slag discharging pipe, the fixing assembly is connected with the feeding port, and when the rotating assembly rotates, the positioning assembly is driven to be locked or released; and sealing closing or separation of the deslagging pipe and the deslagging box is realized. The rotary sealing structure is arranged, mechanical sealing between the slag discharging box and the slag discharging pipe is achieved in a mechanical rotating mode, and compared with an isobaric sealing structure, the rotary sealing structure is more reliable and stable in sealing effect, high in practicability and convenient and fast to operate. Meanwhile, an isobaric cylinder and other auxiliary electrical equipment are omitted, so that the overall maintenance amount and the equipment cost of the equipment are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for coal mills, and in particular to a coal mill stone and coal discharge device. Background Technology

[0002] Medium-speed coal mills are widely used in coal-fired power plants, chemical plants, and steel smelters. Their function is to grind raw coal into pulverized coal of a certain fineness, complete the drying process of the pulverized coal, and then transport the pulverized coal to the boiler furnace, gasifier, or blast furnace for combustion. The stones and slag produced during the grinding process are discharged from the coal mill body through a stone and coal discharge system.

[0003] Traditional slag discharge systems use isobaric discharge sealing. Specifically, after the slag discharge box is lifted by both cylinders, it is transported out using a forklift and then dumped. When the slag discharge box is moved out, the cylinders need to be raised and the expansion joint compressed; when the slag discharge box is moved back, the cylinders need to be lowered and the expansion joint extended. After several operations, the cylinders, expansion joints, and seals are prone to damage.

[0004] Meanwhile, the existing isobaric discharge seal is controlled by a pneumatic clamping device, which cannot guarantee the seal during the fault period if a malfunction occurs. Utility Model Content

[0005] To address at least one of the aforementioned technical problems, this utility model proposes a coal mill stone and coal discharge device to solve the problems of poor sealing between the slag discharge pipe and the slag discharge box, which leads to stone and coal leakage and easy failure and damage of the sealing structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A coal mill stone and coal discharge device, comprising:

[0008] The slag discharge pipe is connected to the discharge port of the coal mill and is used to transport stone coal.

[0009] A slag discharge box has a cavity for holding stones and coal, and the slag discharge box is provided with a feed inlet;

[0010] The rotary sealing structure includes a rotating component, a fixed component that cooperates with the rotating component, and a positioning component that is movably connected to the rotating component and the fixed component. The rotating component is connected to the slag discharge pipe, and the fixed component is connected to the feed inlet. When the rotating component rotates, it drives the positioning component to lock or release, thereby achieving the sealing closure or disengagement of the slag discharge pipe from the slag discharge box.

[0011] Preferably, the rotating assembly includes:

[0012] A retaining ring is connected to the discharge port of the slag discharge pipe;

[0013] A rotating ring is rotatably sleeved on the outer circumference of the fixed ring, and the rotating ring and the fixed ring are concentric;

[0014] A driving component, disposed on the fixed ring and the rotating ring, is used to drive the rotating ring to rotate relative to the fixed ring, thereby driving the positioning component to lock or release.

[0015] Preferably, the driving component includes:

[0016] A drive tooth is rotatably mounted on the side of the fixed ring near the slag discharge pipe, and the central axis of the drive tooth is parallel to the central axis of the fixed ring;

[0017] An arc-shaped rack is concentric with the rotating ring and fixed to the side of the rotating ring near the slag discharge pipe. The arc-shaped rack meshes with the drive teeth. The central axis of the arc-shaped rack is parallel to the central axis of the rotating ring. When the drive teeth rotate along the arc-shaped rack, they drive the rotating ring to rotate relative to the fixed ring.

[0018] Preferably, the discharge device further includes a drive handle connected to the drive gear, which facilitates the operator to rotate the drive gear.

[0019] Preferably, the fixing component includes:

[0020] A connecting cylinder is connected to the feed inlet of the slag discharge box;

[0021] A connecting ring is connected to the end of the connecting cylinder away from the slag discharge box, and the inner diameter of the connecting ring is the same as the inner diameter of the fixing ring.

[0022] Preferably, the positioning component includes:

[0023] Several positioning parts are fixed in a ring array to the outer periphery of the rotating ring, and the positioning parts have a slope.

[0024] A number of positioning pins are fixed in a ring array to the outer periphery of the connecting ring. The central axis of the positioning pins passes perpendicularly through the center of the connecting ring. When the rotating ring rotates, it drives the positioning pins to rise or fall along the slope of the positioning part, thereby achieving the sealing closure or disengagement of the slag discharge pipe and the slag discharge box.

[0025] Preferably, the discharge device further includes a rotating sleeve, which is rotatably fitted around the outer periphery of the positioning pin.

[0026] Preferably, the emission device further includes a locking component, the locking component comprising:

[0027] The L-shaped fastener includes a first fixing section that is perpendicularly fixed to the side of the fixing ring near the slag discharge pipe and a first connecting section that is perpendicular to the first fixing section. The first connecting section is parallel to the surface of the fixing ring and / or the rotating ring, and the end of the first connecting section away from the first fixing section is located on the outer periphery of the rotating ring.

[0028] The L-shaped rotating component includes a second connecting segment rotatably connected to the end of the first connecting segment away from the first fixed segment, and a second fixed segment perpendicularly connected to the second connecting segment; the rotation plane of the L-shaped rotating component passes through the central axis of the rotating ring and / or the fixed ring.

[0029] A fixing pin is rotatably disposed at the end of the second fixing section away from the second connecting section, and the central axis of the fixing pin is parallel to the central axis of the second connecting section;

[0030] When the L-shaped rotating component rotates to the point where the second connecting section is perpendicular to the first connecting section, the second fixed section is located at the lower part of the side of the connecting ring near the slag discharge box. The fixed ring and the connecting ring are fixed by rotating the fixing pin.

[0031] Preferably, the discharge device further includes a gate with a flow-limiting orifice, the gate being connected to the output end of a cylinder or hydraulic cylinder.

[0032] Preferably, the discharge device further includes a limiting structure, which is used to limit the slag discharge box to facilitate the alignment and connection between the slag discharge pipe and the slag discharge box. The limiting structure is a limiting baffle or a limiting groove.

[0033] The bottom of the slag discharge box is equipped with casters for easy handling by operators. The upper part of the slag discharge box is equipped with an observation window made of transparent material. A cleaning handle is provided on the outside of the observation window, and a cleaning brush connected to the cleaning handle is provided inside the observation window. The cleaning brush contacts the inner side of the observation window. When the cleaning handle is rotated, the cleaning brush rotates to clean the attached substances on the inside of the observation window. A sealing ring is provided between the rotating component and the fixed component.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. This utility model incorporates a rotary sealing structure between the slag discharge pipe and the slag discharge box. This rotary sealing structure achieves a mechanical seal between the slag discharge box and the slag discharge pipe through mechanical rotation. Compared to an isobaric sealing structure, the rotary sealing structure in this embodiment offers a more reliable and stable sealing effect, is more practical, and is easier to operate. Furthermore, by eliminating the need for an isobaric cylinder and other auxiliary electrical equipment, the overall maintenance workload and equipment cost are reduced.

[0036] 2. In this invention, the meshing between the drive teeth and the arc-shaped rack is equivalent to the internal meshing of an internal gear and an external gear. This transmission method has the advantages of high transmission efficiency, large load-bearing capacity, and high transmission accuracy, enabling the rotary sealing structure to achieve different degrees of mechanical sealing effect as needed.

[0037] 3. In this invention, a positioning groove is formed between the positioning part and the rotating ring. When the slag discharge box is pushed to the set position, the positioning pin is located within the rotation trajectory of the positioning part. When the rotating ring is driven to rotate by the drive teeth, the positioning part rotates accordingly, rotating the positioning pin into the positioning groove. Since the part of the positioning part that contacts the positioning pin is a slope, and the slope is uphill when viewed from the angle of the positioning pin towards the rotating ring, the distance between the connecting ring and the fixed ring gradually decreases as the positioning pin moves up the slope until they fit tightly together, achieving a good seal.

[0038] 4. By setting a positioning pin, after the connecting ring and the fixed ring are sealed, the L-shaped rotating part is rotated to rotate the fixing pin to the lower part of the connecting ring, thereby locking the connecting ring and the fixed ring by the fixing pin, so as to improve the reliability of the seal.

[0039] 5. In this embodiment, an observation window is provided on the upper part of the slag discharge box. The observation window is made of transparent material. A cleaning handle is provided on the outside of the observation window. A cleaning brush connected to the cleaning handle is provided inside the observation window. The cleaning brush contacts the inner side of the observation window. When the cleaning handle is turned, the cleaning brush rotates to clean the attached substances on the inside of the observation window. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a coal mill stone and coal discharge device.

[0041] Figure 2 This is a top view of the rotating component in this utility model;

[0042] Figure 3 This is a front view of the rotating component in this utility model;

[0043] Figure 4 This is a rear view of the rotating component in this utility model;

[0044] Figure 5 This is a top view of the fixing component in this utility model;

[0045] In the diagram: 10, slag discharge pipe; 20, slag discharge box; 201, caster wheel; 202, observation window; 30, rotary sealing structure; 301, rotating assembly; 3011, fixing ring; 3012, rotating ring; 3013, drive gear; 3014, arc-shaped rack; 3015, drive handle; 302, fixing assembly; 3021, connecting cylinder; 3022, connecting ring; 303, positioning assembly; 3031, positioning part; 3032, positioning pin; 3033, rotating sleeve; 40, locking assembly; 401, L-shaped fixing part; 4011, first fixing section; 4012, first connecting section; 402, L-shaped rotating part; 4021, second connecting section; 4022, second fixing section; 403, fixing pin; 50, insertion plate door; 60, limiting structure. Detailed Implementation

[0046] To enable those skilled in the art to better understand the technical solutions in this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this utility model, and not all of the embodiments in this utility model.

[0047] Please refer to the image. Figure 5 As shown, a coal mill stone and coal discharge device includes:

[0048] The slag discharge pipe 10 is connected to the discharge port of the coal mill and is used to transport stone coal.

[0049] The slag discharge box 20 has a cavity for holding stones and coal, and the slag discharge box 20 is equipped with a feed inlet;

[0050] The rotary sealing structure 30 includes a rotary component 301, a fixed component 302 that cooperates with the rotary component 301, and a positioning component 303 that is movably connected to the rotary component 301 and the fixed component 302. The rotary component 301 is connected to the slag discharge pipe 10, and the fixed component 302 is connected to the feed inlet. When the rotary component 301 rotates, it drives the positioning component 303 to lock or release, thereby achieving the sealing closure or separation of the slag discharge pipe 10 and the slag discharge box 20.

[0051] This embodiment uses a rotary sealing structure 30 between the slag discharge pipe 10 and the slag discharge box 20. The rotary sealing structure 30 achieves a mechanical seal between the slag discharge box 20 and the slag discharge pipe 10 through mechanical rotation. Compared with the isobaric sealing structure, the rotary sealing structure 30 in this embodiment has a more reliable and stable sealing effect, is more practical, and is easier to operate. At the same time, by eliminating the isobaric cylinder and other auxiliary electrical equipment, the overall maintenance workload and equipment cost are reduced.

[0052] Please refer to Figure 2 and Figure 3As shown, in this embodiment, the rotating component 301 includes:

[0053] The fixing ring 3011 is connected to the discharge port of the slag discharge pipe 10;

[0054] A rotating ring 3012 is rotatably sleeved on the outer circumference of a fixed ring 3011, and the rotating ring 3012 and the fixed ring 3011 are concentric.

[0055] A drive assembly is disposed on the fixed ring 3011 and the rotating ring 3012, and is used to drive the rotating ring 3012 to rotate relative to the fixed ring 3011, thereby driving the positioning assembly 303 to lock or release.

[0056] It should be noted that rolling elements can be used between the fixed ring 3011 and the rotating ring 3012 to achieve rolling rotation between them, thereby reducing resistance during rotation. There are many ways to achieve relative rotation between the fixed ring 3011 and the rotating ring 3012, and this application does not limit them here.

[0057] Please refer to Figure 2 and Figure 3 As shown, the above-mentioned driving components include:

[0058] The drive tooth 3013 is rotatably mounted on the side of the fixed ring 3011 near the slag discharge pipe 10, and the central axis of the drive tooth 3013 is parallel to the central axis of the fixed ring 3011.

[0059] The arc-shaped rack 3014 is concentric with the rotating ring 3012 and fixed on the side of the rotating ring 3012 near the slag discharge pipe 10. The arc-shaped rack 3014 meshes with the drive tooth 3013. The central axis of the arc-shaped rack 3014 is parallel to the central axis of the rotating ring 3012. When the drive tooth 3013 rotates along the arc-shaped rack 3014, it drives the rotating ring 3012 to rotate relative to the fixed ring 3011.

[0060] It is understood that in this embodiment, the drive gear 3013 can be rotatably fixed on the fixing ring 3011 via a rotating shaft. To facilitate the rotation of the drive gear 3013, a drive handle 3015 can be provided on the drive gear 3013 to facilitate the operator's rotation of the drive gear 3013.

[0061] In this embodiment, the meshing between the drive tooth 3013 and the arc-shaped rack 3014 is equivalent to the internal meshing of an internal gear and an external gear. This transmission method has the advantages of high transmission efficiency, large load-bearing capacity, and high transmission accuracy, enabling the rotary sealing structure 30 to achieve different degrees of mechanical sealing effect as needed.

[0062] In order to increase the rotation angle of the rotating ring 3012, the arc length of the arc rack 3014 in this embodiment can be designed as needed, that is, the central angle of the arc rack 3014 can be 30°, 60°, 90°, etc.

[0063] Please refer to Figure 1 and Figure 5 As shown, the fixing component 302 includes:

[0064] Connecting cylinder 3021 is connected to the feed inlet of slag discharge box 20;

[0065] The connecting ring 3022 is connected to the end of the connecting cylinder 3021 away from the slag discharge box 20. The inner diameter of the connecting ring 3022 is the same as the inner diameter of the fixed ring 3011.

[0066] It should be noted that, in order to ensure that the coal and stones can be smoothly discharged into the slag box 20 along the slag discharge pipe 10, the inner diameters of the aforementioned fixing ring 3011, connecting ring 3022, slag discharge pipe 10, and connecting cylinder 3021 are all the same. The connecting cylinder 3021 and the connecting ring 3022 can be fixed by welding.

[0067] Please refer to Figure 3 , Figure 4 and Figure 5 As shown, the positioning component 303 includes:

[0068] Several positioning parts 3031 are fixed in a ring array to the outer periphery of the rotating ring 3012, and the positioning parts 3031 have a slope.

[0069] A number of positioning pins 3032 are fixed in a ring array on the outer periphery of the connecting ring 3022. The central axis of the positioning pins 3032 passes perpendicularly through the center of the connecting ring 3022. When the rotating ring 3012 rotates, it drives the positioning pins 3032 to rise or fall along the slope of the positioning part 3031, thereby achieving the sealing closure or disengagement of the slag discharge pipe 10 and the slag discharge box 20.

[0070] Specifically, in this embodiment, a positioning groove is formed between the positioning part 3031 and the rotating ring 3012. When the slag discharge box 20 is pushed to the set position, the positioning pin 3032 is located within the rotation trajectory of the positioning part 3031. When the rotating ring 3012 is driven to rotate by the driving tooth 3013, the positioning part 3031 rotates accordingly, and rotates the positioning pin 3032 into the positioning groove. Since the part in contact between the positioning part 3031 and the positioning pin 3032 is a slope, and the slope is uphill when viewed from the angle of the positioning pin 3032 towards the rotating ring 3012, as the positioning pin 3032 moves uphill on the slope, the distance between the connecting ring 3022 and the fixed ring 3011 gradually decreases until the two fit tightly together, achieving a good seal.

[0071] To facilitate the movement of the positioning pin 3032 along the slope, in this embodiment, a rotating sleeve 3033 is rotatably fitted around the outer periphery of the positioning pin 3032. Thus, the sliding friction between the positioning pin 3032 and the slope is changed to rolling friction, reducing the frictional force between the positioning pin 3032 and the slope, thereby reducing the resistance of the drive teeth 3013 and improving the flexibility of the rotating ring 3012.

[0072] It should be noted that in this embodiment, two positioning parts 3031 and two positioning pins 3032 are provided. Obviously, the number of positioning parts 3031 and positioning pins 3032 can be set according to actual needs to achieve the best sealing effect.

[0073] Furthermore, to improve the sealing performance between the retaining ring 3011 and the connecting ring 3022, a sealing ring is provided between the retaining ring 3011 and the connecting ring 3022. Obviously, the operator can increase the number of sealing rings as needed to improve the sealing effect. The sealing ring can be made of rubber, such as nitrile rubber or polyurethane rubber.

[0074] Please refer to Figure 3 and Figure 4 As shown, in order to improve the stability and reliability of the connection between the rotating assembly 301 and the fixed assembly 302, the emission device of this embodiment also includes a locking assembly 40, specifically including:

[0075] L-shaped fastener 401 includes a first fixing section 4011 that is vertically fixed to the side of the fixing ring 3011 near the slag discharge pipe 10 and a first connecting section 4012 that is perpendicular to the first fixing section 4011. The first connecting section 4012 is parallel to the surface of the fixing ring 3011 and / or the rotating ring 3012. One end of the first connecting section 4012 away from the first fixing section 4011 is located on the outer periphery of the rotating ring 3012.

[0076] L-shaped rotating member 402 includes a second connecting section 4021 rotatably connected to one end of the first connecting section 4012 away from the first fixed section 4011, and a second fixed section 4022 perpendicularly connected to the second connecting section 4021; the rotation plane of the L-shaped rotating member 402 passes through the central axis of the rotating ring 3012 and / or the fixed ring 3011.

[0077] The fixing pin 403 is rotatably disposed at the end of the second fixing section 4022 away from the second connecting section 4021, and the central axis of the fixing pin 403 is parallel to the central axis of the second connecting section 4021;

[0078] When the L-shaped rotating part 402 rotates to the point where the second connecting section 4021 is perpendicular to the first connecting section 4012, the second fixed section 4022 is located at the lower part of the side of the connecting ring 3022 near the slag discharge box 20. The fixed ring 3011 and the connecting ring 3022 are fixed by rotating the fixed pin 403.

[0079] It should be noted that, in order to improve the stability of the rotary sealing structure 30 after sealing, in this embodiment, a positioning pin 3032 is set. After the connecting ring 3022 and the fixed ring 3011 are sealed, the L-shaped rotating part 402 is rotated to rotate the fixing pin 403 to the lower part of the connecting ring 3022. The fixing pin 403 locks the connecting ring 3022 and the fixed ring 3011, thereby improving the reliability of the seal.

[0080] It is understood that the aforementioned fixing pin 403 can fix the connecting ring 3022 and the fixing ring 3011 by rotation. Specifically, in this embodiment, a nut is fixed at the end of the second fixing section 4022 away from the second connecting section 4021, and the fixing pin 403 is provided with threads adapted to the nut. By rotating, the fixing pin 403 applies pressure to the connecting ring 3022 to achieve mechanical compression fixation.

[0081] Of course, to further improve the stability between the fixing pin 403 and the connecting ring 3022, in this embodiment, several pin holes corresponding to the fixing pin 403 can also be provided on the side of the connecting ring 3022 near the slag discharge box 20. The pin holes prevent rotation between the connecting ring 3022 and the fixing pin 403, ensuring the stability between them and thus improving the sealing effect of the rotary sealing structure 30.

[0082] To facilitate the rotation of the fixing pin 403, a rotating hole is provided at the end of the fixing pin 403 that does not contact the connecting ring 3022 in this embodiment. It can be understood that the operator can easily rotate the fixing pin 403 by using a rod-like object to cooperate with the rotating hole.

[0083] Please refer to Figure 1 As shown, the discharge device also includes a gate 50 with a flow-limiting orifice, which is connected to the output end of a cylinder or hydraulic cylinder.

[0084] Specifically, the function of the gate 50 is to close or open the slag discharge pipe 10. When slag needs to be discharged, the control cylinder or oil cylinder opens the gate 50 and discharges the stone coal into the slag discharge box 20 through the slag discharge pipe 10. When the stone coal in the slag discharge box 20 reaches the set amount, the control cylinder or oil cylinder closes the gate 50 to prevent the slag discharge pipe 10 from discharging stone coal into the slag discharge box 20.

[0085] To facilitate the alignment and connection between the slag discharge pipe 10 and the slag discharge box 20, this embodiment also includes a limiting structure 60, which can be a limiting baffle or a limiting groove. Specifically, a limiting baffle or a limiting groove is provided at the lower part of the slag discharge pipe 10 as a positioning mark for the accurate placement of the slag discharge box 20. When the worker places the slag discharge box 20 into the limiting baffle or limiting groove, the rotating ring 3012 rotates, causing the positioning part 3031 to rotate, which will inevitably rotate the positioning pin 3032 into the positioning groove.

[0086] Please refer to Figure 1 As shown, in order to facilitate transportation, the bottom of the slag discharge box 20 in this embodiment is provided with casters 201. Specifically, four casters 201 are provided at the four corners of the slag discharge box 20.

[0087] To facilitate operators' observation of the amount of stone and coal discharged from the slag discharge box 20, an observation window 202 is provided on the upper part of the slag discharge box 20 in this embodiment. The observation window 202 is made of transparent material. A cleaning handle is provided on the outside of the observation window 202, and a cleaning brush connected to the cleaning handle is provided inside the observation window 202. The cleaning brush contacts the inner side of the observation window 202. When the cleaning handle is rotated, the cleaning brush rotates to clean the attached material on the inside of the observation window 202.

[0088] The operation process of the emission device in this application:

[0089] Transfer the slag discharge box 20 to the lower part of the slag discharge pipe 10, place the slag discharge box 20 in the set position through the limiting structure 60, rotate the drive handle 3015 to drive the rotating ring 3012 to rotate, screw the positioning pin 3032 into the slope of the positioning part 3031, and continue to rotate the drive gear 3013 until the connecting ring 3022 and the fixing ring 3011 are pressed together.

[0090] Rotate the L-shaped rotating part 402 to rotate the fixing pin 403 to the lower part of the connecting ring 3022. Rotate the fixing pin 403 one by one until the fixing pin 403 is screwed into the pin hole and presses the connecting ring 3022.

[0091] Open the gate 50 and discharge the stone coal into the slag box 20 through the slag discharge pipe 10. Observe the amount of stone coal discharged in the slag box 20 through the observation window 202. During this period, you can clean the coal dust and other attached materials attached to the observation window 202 by using the cleaning handle.

[0092] When the amount of slag discharged in the slag discharge box 20 reaches the set capacity, close the slide door 50, rotate the drive gear 3013 in the direction of the drive handle 3015, release the positioning pin 3032 along the slope of the positioning part 3031 until it is completely disengaged from the positioning groove, and transfer the slag discharge box 20 to the designated position.

[0093] The above description is a specific implementation of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A coal mill stone and coal discharge device, characterized in that, include: The slag discharge pipe (10) is connected to the discharge port of the coal mill and is used to transport stone coal; The slag discharge box (20) has a cavity for holding stone coal, and the slag discharge box (20) is provided with a feed inlet; The rotary sealing structure (30) includes a rotary component (301), a fixed component (302) that cooperates with the rotary component (301), and a positioning component (303) that is movably connected to the rotary component (301) and the fixed component (302). The rotary component (301) is connected to the slag discharge pipe (10), and the fixed component (302) is connected to the feed inlet. When the rotary component (301) rotates, it drives the positioning component (303) to lock or release, thereby achieving the sealing closure or separation of the slag discharge pipe (10) and the slag discharge box (20).

2. The coal mill stone and coal discharge device according to claim 1, characterized in that, The rotating assembly (301) includes: A fixing ring (3011) is connected to the discharge port of the slag discharge pipe (10); A rotating ring (3012) and a rotating sleeve (3033) are disposed on the outer periphery of the fixed ring (3011), and the rotating ring (3012) and the fixed ring (3011) are concentric; A driving component is disposed on the fixed ring (3011) and the rotating ring (3012) for driving the rotating ring (3012) to rotate relative to the fixed ring (3011), thereby driving the positioning component (303) to lock or release.

3. The coal mill stone and coal discharge device according to claim 2, characterized in that, The driving component includes: A drive tooth (3013) is rotatably disposed on the side of the fixed ring (3011) near the slag discharge pipe (10), and the central axis of the drive tooth (3013) is parallel to the central axis of the fixed ring (3011); An arc-shaped rack (3014) is concentric with the rotating ring (3012) and fixed on the side of the rotating ring (3012) near the slag discharge pipe (10). The arc-shaped rack (3014) meshes with the driving tooth (3013). The central axis of the arc-shaped rack (3014) is parallel to the central axis of the rotating ring (3012). When the driving tooth (3013) rotates along the arc-shaped rack (3014), it drives the rotating ring (3012) to rotate relative to the fixed ring (3011).

4. The coal mill stone and coal discharge device according to claim 3, characterized in that, The emission device also includes a drive handle (3015), which is connected to the drive gear (3013) to facilitate the operator to rotate the drive gear (3013).

5. The coal mill stone and coal discharge device according to claim 4, characterized in that, The fixing component (302) includes: The connecting cylinder (3021) is connected to the feed inlet of the slag discharge box (20); A connecting ring (3022) is connected to the end of the connecting cylinder (3021) away from the slag discharge box (20), and the inner diameter of the connecting ring (3022) is the same as the inner diameter of the fixing ring (3011).

6. The coal mill stone and coal discharge device according to claim 5, characterized in that, The positioning component (303) includes: A plurality of positioning parts (3031) are fixed in a ring array to the outer periphery of the rotating ring (3012), and the positioning parts (3031) have a slope surface; A number of positioning pins (3032) are fixed in a ring array on the outer periphery of the connecting ring (3022). The central axis of the positioning pin (3032) passes perpendicularly through the center of the connecting ring (3022). When the rotating ring (3012) rotates, it drives the positioning pin (3032) to rise or fall along the slope of the positioning part (3031), thereby achieving the sealing closure or disengagement of the slag discharge pipe (10) and the slag discharge box (20).

7. The coal mill stone and coal discharge device according to claim 6, characterized in that, The discharge device also includes a rotating sleeve (3033), which is rotatably mounted on the outer periphery of the positioning pin (3032).

8. The coal mill stone and coal discharge device according to claim 7, characterized in that, The emission device further includes a locking assembly (40), the locking assembly (40) comprising: The L-shaped fastener (401) includes a first fixing section (4011) that is perpendicularly fixed to the side of the fixing ring (3011) near the slag discharge pipe (10) and a first connecting section (4012) that is perpendicular to the first fixing section (4011). The first connecting section (4012) is parallel to the surface of the fixing ring (3011) and / or the rotating ring (3012). The end of the first connecting section (4012) away from the first fixing section (4011) is located on the outer periphery of the rotating ring (3012). The L-shaped rotating component (402) includes a second connecting segment (4021) rotatably connected to the end of the first connecting segment (4012) away from the first fixed segment (4011) and a second fixed segment (4022) perpendicularly connected to the second connecting segment (4021); the rotation plane of the L-shaped rotating component (402) passes through the central axis of the rotating ring (3012) and / or the fixed ring (3011); A fixing pin (403) is rotatably disposed at one end of the second fixing section (4022) away from the second connecting section (4021), and the central axis of the fixing pin (403) is parallel to the central axis of the second connecting section (4021); When the L-shaped rotating part (402) rotates to the point where the second connecting section (4021) is perpendicular to the first connecting section (4012), the second fixed section (4022) is located at the lower part of the side of the connecting ring (3022) near the slag discharge box (20). The fixed ring (3011) and the connecting ring (3022) are fixed by rotating the fixed pin (403).

9. The coal mill stone and coal discharge device according to any one of claims 1-8, characterized in that, The discharge device also includes a gate (50) with a flow-limiting orifice, which is connected to the output end of a cylinder or hydraulic cylinder.

10. The coal mill stone and coal discharge device according to any one of claims 1-8, characterized in that, The discharge device also includes a limiting structure (60), which is used to limit the slag discharge box (20) so as to facilitate the alignment and connection between the slag discharge pipe (10) and the slag discharge box (20). The limiting structure (60) is a limiting baffle or a limiting groove. The bottom of the slag discharge box (20) is provided with casters (201) to facilitate the operation of the slag discharge box (20). The upper part of the slag discharge box (20) is provided with an observation window (202). The observation window (202) is made of transparent material. A cleaning handle is provided on the outside of the observation window (202). A cleaning brush connected to the cleaning handle is provided inside the observation window (202). The cleaning brush contacts the inner side of the observation window (202). When the cleaning handle is rotated, the cleaning brush rotates to clean the attached material on the inside of the observation window (202). A sealing ring is provided between the rotating component (301) and the fixed component (302).

Images