Coal anti-blocking device of coal pulverizing system

Abstract

The utility model discloses a coal anti-blocking device of a coal pulverizing system, and relates to the technical field of coal power generation. The anti-blocking device comprises a coal dropping pipe, wherein an anti-blocking mechanism and a buffering mechanism are arranged on the coal dropping pipe; the anti-blocking mechanism comprises an anti-blocking assembly, a driving assembly and a linkage assembly, the anti-blocking assembly comprises a connecting groove formed in the coal falling pipe, the connecting groove is rotationally connected with a sawtooth ring, the sawtooth ring is fixedly connected with a first sealing ring, the first sealing ring is fixedly connected with a plurality of threaded blades, and the first sealing ring is fixedly connected with the inner wall of the coal falling pipe. Through the anti-blocking mechanism, the motor is used for driving the plurality of threaded blades to rotate in the coal drop pipe, and the spiral threaded blades rotate, so that the conveying effect of dredging the coal drop pipe and preventing blocking is achieved, and part of materials which are high in humidity and adsorbed in the coal drop pipe can be scraped and cleaned; the materials are prevented from being accumulated to influence operation of the device or continuously block the coal dropping pipe, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal power generation, in particular to a coal pulverizing system anti-coal blocking device. Background Art

[0002] In the existing technology, after searching, it was found that a Chinese patent disclosed "A device for preventing coal blockage in a coal pulverizing system", and its announcement number is "CN221542863U". This patent mainly benefits from the use of vibration to achieve rapid discharge of coal powder in the coal drop pipe, avoiding the problem of excessive coal causing blockage in the coal drop pipe. Due to the design of the flexible protective cover, the material is prevented from being stuck in the gap between the vibration plate and the coal drop pipe and affecting the vibration effect. Since the vibration force generated by the vibration motor directly acts on the vibration plate, the excitation effect is greatly improved, making the discharge capacity better.

[0003] However, the structure of this device is relatively simple. Although the vibration of the coal drop pipe can shake off the material blocked in the pipe, it is difficult to shake off a small amount of coal powder with high humidity that may be adsorbed and adhered to the inner wall of the pipe. If such material is not cleaned for a long time, when a large amount of material falls through the pipe, it may cause accumulation in the pipe again, which makes the anti-blocking effect of this device have certain limitations. Utility Model Content

[0004] The purpose of the utility model is to provide a coal pulverizing system anti-blocking device, which is equipped with an anti-blocking mechanism and uses a motor to drive a number of threaded blades to rotate in a coal drop pipe. The rotation of the spirally designed threaded blades not only has the effect of clearing the coal drop pipe to prevent transportation from being blocked, but can also scrape and clean some materials with high humidity adsorbed in the coal drop pipe, solving the problem that a small amount of coal powder with high humidity that may be adsorbed and adhered to the inner wall of the pipe may cause accumulation in the pipe again.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a coal pulverizing system anti-blocking device, comprising a coal drop pipe, wherein the coal drop pipe is provided with an anti-blocking mechanism and a buffer mechanism;

[0007] The anti-blocking mechanism includes an anti-blocking component, a driving component and a linkage component. The anti-blocking component includes two connecting grooves opened on the inner wall of the coal drop pipe. The inner walls of the two connecting grooves are rotatably connected with serrated rings. The inner walls of the two serrated rings are fixedly connected with a first sealing ring. The inner walls of the two first sealing rings are fixedly connected with a number of threaded blades. The outer walls of the two first sealing rings are fixedly connected to the inner wall of the coal drop pipe.

[0008] Furthermore, the drive assembly includes a fixed shell fixedly connected to the outer wall of the coal drop pipe, the inner wall of the fixed shell is fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating shaft, and the end of the rotating shaft is fixedly connected to a first bevel gear.

[0009] Furthermore, the inner wall of the fixed housing is rotatably connected to a connecting shaft, the outer wall of the connecting shaft is fixedly connected to a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0010] Furthermore, the linkage assembly includes two fixed blocks fixedly connected to the outer wall of the coal drop pipe, the top and bottom ends of the connecting shaft extend to the side where the two fixed blocks are close to each other and are rotatably connected to the fixed blocks, and the outer wall of the connecting shaft is fixedly connected to two gears, and both of the gears are engaged with the serrated ring.

[0011] Furthermore, the buffer mechanism includes a limit assembly and a spring assembly. The limit assembly includes two first limit rings fixedly connected to the top and bottom ends of the coal drop pipe. The inner walls of the two first limit rings are slidably connected to the second limit ring.

[0012] Furthermore, the two ends of the second limiting rings away from each other are fixedly connected to flange rings, the inner walls of the two flange rings are fixedly connected to second sealing rings, and the outer walls of the two second sealing rings are slidably connected to the inner wall of the first limiting ring.

[0013] Furthermore, the spring assembly includes two second springs fixedly connected to the top and bottom ends of the coal drop pipe, the ends of the two second springs that are away from each other are fixedly connected to the second limiting ring, and the sides of the two flange rings that are close to the first limiting ring are fixedly connected to the first spring.

[0014] The utility model has the following beneficial effects:

[0015] 1. By setting up an anti-blocking mechanism, a motor is used to drive several threaded blades to rotate in the coal drop pipe. The rotation of the spirally designed threaded blades not only has the effect of clearing the coal drop pipe to prevent blockage, but also can scrape and clean some materials with high humidity adsorbed in the coal drop pipe, preventing the accumulation of such materials from affecting the operation of the device or continuing to block the coal drop pipe, thereby improving the practicality of the device.

[0016] 2. By setting up a buffer mechanism, the elastic force of the first spring and the second spring is utilized to reduce the impact of vibrations generated during the operation of other coal powder preparation process devices on the fixed connection of the flange ring. To a certain extent, this avoids the situation where the flange ring connection becomes loose due to vibrations from the operation of other devices, causing the coal drop pipe to detach, further improving the practicality of the device.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the rear cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model from above;

[0022] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Coal drop pipe; 2. Anti-blocking mechanism; 3. Buffer mechanism; 21. Connecting groove; 22. Serrated ring; 23. First sealing ring; 24. Threaded blade; 25. Fixed shell; 26. Motor; 27. Rotating shaft; 28. First bevel gear; 29. ​​Connecting shaft; 210. Second bevel gear; 211. Fixed block; 212. Gear; 31. First limiting ring; 32. Second limiting ring; 33. Flange ring; 34. Second sealing ring; 35. First spring; 36. Second spring. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-5 As shown, the utility model is a coal pulverizing system anti-blocking device, comprising a coal drop pipe 1, on which an anti-blocking mechanism 2 and a buffer mechanism 3 are provided;

[0028] The anti-blocking mechanism 2 includes an anti-blocking component, a driving component and a linkage component. The anti-blocking component includes two connecting grooves 21 opened on the inner wall of the coal drop pipe 1. The inner walls of the two connecting grooves 21 are rotatably connected to the sawtooth rings 22. The inner walls of the two sawtooth rings 22 are fixedly connected to the first sealing rings 23. The inner walls of the two first sealing rings 23 are fixedly connected to a plurality of threaded blades 24. The outer walls of the two first sealing rings 23 are fixedly connected to the inner wall of the coal drop pipe 1. The driving component includes a fixed shell 25 fixedly connected to the outer wall of the coal drop pipe 1. The inner wall of the fixed shell 25 is fixedly connected to the motor 26. The output end of the motor 26 is fixed. It is connected to a rotating shaft 27, the end of which is fixedly connected to a first bevel gear 28, the inner wall of the fixed shell 25 is rotatably connected to a connecting shaft 29, the outer wall of the connecting shaft 29 is fixedly connected to a second bevel gear 210, the second bevel gear 210 is meshed with the first bevel gear 28, and the linkage assembly includes two fixed blocks 211 fixedly connected to the outer wall of the coal drop pipe 1, the top and bottom ends of the connecting shaft 29 are extended to a side where the two fixed blocks 211 are close to each other and are rotatably connected to the fixed blocks 211, the outer wall of the connecting shaft 29 is fixedly connected to two gears 212, and the two gears 212 are meshed with the serrated ring 22.

[0029] By setting up the anti-blocking mechanism 2, it is possible to use the motor 26 to drive several threaded blades 24 to rotate in the coal drop pipe 1. The rotation of the spirally designed threaded blades 24 not only has the effect of clearing the coal drop pipe 1 to prevent transportation from being blocked, but can also scrape and clean some materials with high humidity that are adsorbed in the coal drop pipe 1, preventing the accumulation of such materials from affecting the operation of the device or continuing to block the coal drop pipe 1, thereby improving the practicality of the device.

[0030] The buffer mechanism 3 includes a limit assembly and a spring assembly. The limit assembly includes two first limit rings 31 fixedly connected to the top and bottom ends of the coal drop pipe 1. The inner walls of the two first limit rings 31 are slidably connected to the second limit ring 32. The ends of the two second limit rings 32 that are away from each other are fixedly connected to the flange ring 33. The inner walls of the two flange rings 33 are fixedly connected to the second sealing ring 34. The outer walls of the two second sealing rings 34 are slidably connected to the inner wall of the first limit ring 31. The spring assembly includes two second springs 36 fixedly connected to the top and bottom ends of the coal drop pipe 1. The ends of the two second springs 36 that are away from each other are fixedly connected to the second limit ring 32. The sides of the two flange rings 33 that are close to the first limit ring 31 are fixedly connected to the first spring 35.

[0031] By providing the buffer mechanism 3, the elastic force of the first spring 35 and the second spring 36 is utilized to mitigate the vibration generated during the operation of other coal powder preparation process devices that affects the fixed connection of the flange ring 33. To a certain extent, this avoids the situation where the flange ring 33 becomes loose due to the vibration of the operation of other devices, thereby preventing the coal drop pipe 1 from being detached, thereby further improving the practicality of the device.

[0032] A specific application of this embodiment is: by setting an anti-blocking mechanism 2, driving the motor 26 in the fixed shell 25, and driving the first bevel gear 28 to rotate through the rotating shaft 27. Since the first bevel gear 28 is engaged with the second bevel gear 210, the first bevel gear 28 drives the second bevel gear 210 to rotate synchronously, and the second bevel gear 210 drives the connecting shaft 29 to rotate, and the connecting shaft 29 drives the two gears 212 to rotate, wherein two fixed blocks 211 are provided, which play a supporting and limiting role for the rotation of the connecting shaft 29. Due to the high volume, the gears 212 are engaged with the two sawtooth rings 22, so that the two gears 212 drive the two sawtooth rings 22 to rotate in the connecting groove 21, and the sawtooth ring 22 drives the first sealing ring 23 to rotate, wherein the first sealing ring 23 is provided to seal the connecting groove 21, and fix a plurality of threaded blades 24 to connect the two first sealing rings 23 The serrated ring 22 drives several threaded blades 24 to rotate in the coal drop pipe 1 through the first sealing ring 23, wherein the rotation of the threaded blades 24 can not only spirally transport the material blocked in the coal drop pipe 1 along the threaded blades 24 into the lower side of the coal drop pipe 1 to enter the next process, but the continuously rotating threaded blades 24 can also continuously scrape off the material that may be adhered in the coal drop pipe 1 for cleaning, thereby preventing such materials with high humidity from absorbing other materials and clogging the coal drop pipe 1 again. The motor 26 is used to drive several threaded blades 24 to rotate in the coal drop pipe 1. The rotation of the spirally designed threaded blades 24 not only has the effect of clearing the coal drop pipe 1 and preventing blockage, but also can scrape off and clean some materials with high humidity adsorbed in the coal drop pipe 1, thereby preventing such materials from accumulating and affecting the operation of the device or continuing to clog the coal drop pipe 1, thereby improving the practicality of the device.

[0033] By setting up the buffer mechanism 3, the upper flange ring 33 is fixed to the stirring and crushing device, and the lower flange ring 33 is fixed to the storage or further processing device. Since most coal powder preparation devices generate a lot of vibration when crushing coal, which may cause loosening when connected to the coal drop pipe 1, when other process devices are in operation, a certain direct force will be applied to the flange ring 33. Through the elastic force of the first springs 35 and the second springs 36, the second limit ring 32 is pushed to slide within the first limit ring 31, squeezing the first spring 35 and the second spring 36. The first spring 35 and the second spring 36 are elastically reset to buffer the force. , to avoid the vibration generated by the operation of other process devices affecting the connection between them and the coal drop pipe 1 and causing loosening. The second sealing ring 34 is provided to seal the first spring 35, preventing the coal powder material in the coal drop pipe 1 from accidentally contacting the first spring 35 and affecting the buffering of the first spring 35. The elastic force of the first spring 35 and the second spring 36 is utilized to reduce the vibration generated by the operation of other coal powder preparation process devices and affect the fixed connection of the flange ring 33. To a certain extent, it avoids the situation where the flange ring 33 is loosened due to the vibration of other devices during operation, causing the coal drop pipe 1 to be detached, further improving the practicality of the device.

[0034] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for preventing coal blockage in a coal pulverizing system, comprising a coal drop pipe (1), wherein the coal drop pipe (1) is provided with an anti-blockage mechanism (2) and a buffer mechanism (3), and wherein: The anti-blocking mechanism (2) comprises an anti-blocking component, a driving component and a linkage component. The anti-blocking component comprises two connecting grooves (21) provided on the inner wall of the coal drop pipe (1). The inner walls of the two connecting grooves (21) are rotatably connected to a sawtooth ring (22). The inner walls of the two sawtooth rings (22) are fixedly connected to a first sealing ring (23). The inner walls of the two first sealing rings (23) are fixedly connected to a plurality of threaded blades (24). The outer walls of the two first sealing rings (23) are fixedly connected to the inner wall of the coal drop pipe (1).

2. The device for preventing coal blockage in a coal pulverizing system according to claim 1, characterized in that: The driving assembly comprises a fixed shell (25) fixedly connected to the outer wall of the coal drop pipe (1); a motor (26) is fixedly connected to the inner wall of the fixed shell (25); an output end of the motor (26) is fixedly connected to a rotating shaft (27); and a terminal end of the rotating shaft (27) is fixedly connected to a first bevel gear (28).

3. The device for preventing coal blockage in a coal pulverizing system according to claim 2, characterized in that: The inner wall of the fixed housing (25) is rotatably connected to a connecting shaft (29), and the outer wall of the connecting shaft (29) is fixedly connected to a second bevel gear (210), and the second bevel gear (210) is meshed with the first bevel gear (28).

4. The device for preventing coal blockage in a coal pulverizing system according to claim 3, characterized in that: The linkage assembly comprises two fixed blocks (211) fixedly connected to the outer wall of the coal drop pipe (1); the top and bottom ends of the connecting shaft (29) both extend to a side where the two fixed blocks (211) are close to each other and are rotatably connected to the fixed blocks (211); the outer wall of the connecting shaft (29) is fixedly connected to two gears (212); and the two gears (212) are both meshed with the sawtooth ring (22).

5. The device for preventing coal blockage in a coal pulverizing system according to claim 4, characterized in that: The buffer mechanism (3) comprises a limit assembly and a spring assembly. The limit assembly comprises two first limit rings (31) fixedly connected to the top and bottom ends of the coal drop pipe (1). The inner walls of the two first limit rings (31) are slidably connected to second limit rings (32).

6. The device for preventing coal blockage in a coal pulverizing system according to claim 5, characterized in that: The ends of the two second limiting rings (32) that are away from each other are fixedly connected to flange rings (33), the inner walls of the two flange rings (33) are fixedly connected to second sealing rings (34), and the outer walls of the two second sealing rings (34) are slidably connected to the inner wall of the first limiting ring (31).

7. The device for preventing coal blockage in a coal pulverizing system according to claim 6, characterized in that: The spring assembly comprises two second springs (36) fixedly connected to the top and bottom ends of the coal drop pipe (1), the ends of the two second springs (36) that are away from each other are fixedly connected to the second limiting ring (32), and the sides of the two flange rings (33) that are close to the first limiting ring (31) are fixedly connected to the first spring (35).

Images