A boiler coal mill

Abstract

This utility model relates to the field of boiler coal pulverizing technology and provides a boiler coal pulverizer, including: a coal pulverizing box, a feeding component at the top of the coal pulverizing box, a coal pulverizing assembly at the upper interior of the coal pulverizing box, and a recovery component at the lower interior of the coal pulverizing box; a separating component at the bottom of the coal pulverizing box, and a collection box fixedly connected to the bottom of the coal pulverizing box. By setting up the recovery component, it is convenient to filter the coal processed by the coal pulverizing assembly. Coal that cannot pass through the filter holes is lifted by the lifting cylinder and the screw rod to the feeding hood for refeeding and crushing. At the same time, by setting up the feeding component, it is convenient to feed slowly and avoid large amounts of coal blocks being fed into the coal pulverizing assembly quickly, which would result in poor coal pulverizing effect. By setting up the feeding component and the recovery component, the coal pulverizing effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of boiler coal grinding technology, and in particular relates to a boiler coal mill. Background Technology

[0002] In humid weather, coal pulverizers in thermal power plant boilers are prone to condensing with moisture in the air during coal storage, causing coal pulverizers to clump together and form brittle particles in the storage tank, which greatly affects the combustion intensity of the coal pulverizers.

[0003] Application CN201920554049.X discloses a coal mill for a thermal power plant boiler, including a storage tank, a feed inlet, a placement trough, and an outlet. The feed inlet is bolted to the top right side of the storage tank, and the placement trough is bolted to the top of the feed inlet. The outlet is bolted to the left side of the storage tank, and a drop trough is provided at the top opening of the storage tank. A hinge is bolted to the left side of the drop trough, and a partition plate is bolted to the right side of the hinge. A spring is bolted to the bottom left side of the partition plate. This coal mill for a thermal power plant boiler can prevent the coal powder in the storage tank from becoming damp and forming caking, thereby improving its combustion quality, making it more suitable for long-term storage, and effectively reducing the intensity of subsequent manual cleaning.

[0004] The existing technology still has the following shortcomings:

[0005] Existing technology grinds coal using a single crushing blade. However, because the coal blocks fall vertically for a very short time, the grinding roller grinds the coal blocks for a very short time each time, resulting in some coal blocks not being ground up, thus leading to poor grinding efficiency. Utility Model Content

[0006] This utility model provides a boiler coal mill, which aims to solve the problem that the existing technology grinds coal using a single crushing blade. However, because the coal blocks take a very short time to fall vertically, the grinding roller grinds the coal blocks for a very short time each time, resulting in some coal blocks not being ground and thus leading to poor grinding effect.

[0007] This utility model is implemented as follows: a boiler coal mill includes: a coal mill box, a feeding assembly at the top of the coal mill box, a coal milling assembly at the upper interior of the coal mill box, and a recovery assembly at the lower interior of the coal mill box; a separating assembly at the bottom of the coal mill box, and a collection box fixedly connected to the bottom of the coal mill box; the recovery assembly includes an elastic fixing plate detachably and fixedly connected to the lower interior of the coal mill box, the elastic fixing plate having several filter holes in the middle, and vibration motors installed on both sides of the lower end of the elastic fixing plate, the elastic fixing plate being in an inclined state.

[0008] Preferably, the recycling assembly further includes a lifting cylinder that is fixedly connected to the lower inclined side of the coal mill box near the elastic fixing plate; the lower end of the lifting cylinder is provided with a feed inlet near the coal mill box; the coal mill box and the lifting cylinder are connected through the feed inlet.

[0009] Preferably, the recycling assembly further includes a first motor installed at the top of the lifting cylinder, and the output end of the first motor is inserted into the inside of the lifting cylinder and fixedly connected to a spiral rod.

[0010] Preferably, the feeding assembly includes a feeding pipe that communicates with the middle of the top of the coal mill box, a feeding hood is connected to the top of the feeding pipe, a discharge pipe is connected to one side of the upper end of the lifting cylinder, and the discharge pipe extends into the inside of the feeding hood.

[0011] Preferably, the feeding assembly includes a second motor installed on one side of the feeding pipe, the output end of the second motor is inserted into the feeding pipe and fixedly connected to a rotating rod, the extended end of the rotating rod is rotatably connected to the inner wall of the other side of the feeding pipe, and a feeding plate is fixedly connected to the four sides of the rotating rod.

[0012] Preferably, the coal grinding assembly includes two third motors installed on the front side of the upper end of the coal grinding box, the output ends of the two third motors are inserted into the inside of the coal grinding box and fixedly connected to a crushing cylinder, and guide blocks are fixedly connected to both sides of the top of the inside of the coal grinding box.

[0013] Preferably, the separating component includes a discharge port opened at the bottom of the coal mill box, the interior of the collecting box and the coal mill box are connected through the discharge port, the two sides of the discharge port are respectively connected to the mounting grooves, the two mounting grooves are respectively installed with electric telescopic rods, the telescopic ends of the two electric telescopic rods are respectively fixedly connected with the separating plate, and the two separating plates are respectively fixedly connected with rubber strips around their perimeters.

[0014] Preferably, the collection box is equipped with a stirring device inside.

[0015] Compared with the prior art, the embodiments of this application have the following main advantages:

[0016] By setting up a recovery component, it is easy to filter the coal after it has been processed by the coal milling component. Coal that cannot pass through the filter holes is lifted by the lifting cylinder and the screw to the feeding hood for refeeding and crushing. At the same time, by setting up a feeding component, it is easy to feed slowly and avoid large amounts of coal lumps being fed into the coal milling component quickly, which would result in poor coal milling effect. By setting up the feeding component and the recovery component, the coal milling effect is improved. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a front view cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a utility model Figure 2 Enlarged structural diagram at point B;

[0021] Figure 5 This is a utility model Figure 2 Enlarged structural diagram at point C;

[0022] In the diagram: 1. Coal mill box; 2. Feeding assembly; 3. Recycling assembly; 4. Separating assembly; 5. Feed hood; 6. Feed pipe; 7. Second motor; 8. Rotating rod; 9. Feeding plate; 10. Third motor; 11. Crushing cylinder; 12. Guide block; 13. Elastic fixing plate; 14. Feed inlet; 15. Filter hole; 16. Vibrating motor; 17. Lifting cylinder; 18. First motor; 19. Screw rod; 20. Discharge pipe; 21. Discharge port; 22. Mounting groove; 23. Electric telescopic rod; 24. Separating plate; 25. Rubber strip; 26. Collection box; 27. Mixing device. Detailed Implementation

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] This utility model embodiment provides a boiler coal mill, such as Figure 1-5As shown, it includes: a coal grinding box 1, a feeding assembly 2 at the top of the coal grinding box 1, a coal grinding assembly at the upper part of the inside of the coal grinding box 1, and a recycling assembly 3 at the lower part of the inside of the coal grinding box 1; a separating assembly 4 at the bottom of the coal grinding box 1, and a collection box 26 fixedly connected to the bottom of the coal grinding box 1; the recycling assembly 3 includes an elastic fixing plate 13 that is detachably and fixedly connected to the lower part of the inside of the coal grinding box 1, the elastic fixing plate 13 has several filter holes 15 in the middle, and a vibration motor 16 is installed on both sides of the lower end of the elastic fixing plate 13, and the elastic fixing plate 13 is in an inclined state.

[0026] It should be noted that, because existing technology grinds coal using a single crushing blade, and because the coal blocks fall vertically for a very short time, the grinding roller grinds the coal blocks for a very short time each time, resulting in some coal blocks not being ground up, thus leading to poor grinding efficiency. This solution incorporates a recovery component 3 to facilitate the filtration of coal processed by the grinding component. Coal that cannot pass through the filter holes 15 is lifted by the lifting cylinder 17 and the screw rod 19 to the feed hood 5 for re-feeding and crushing. At the same time, the feeding component 2 facilitates slow feeding, preventing large amounts of coal blocks from rapidly entering the grinding component, which would result in poor grinding efficiency. By incorporating the feeding component 2 and the recovery component 3, the grinding efficiency is improved.

[0027] In a further preferred embodiment of this utility model, such as Figure 1-3 As shown, the recycling assembly 3 also includes a lifting cylinder 17 that is externally and fixedly connected to the lower side of the coal mill box 1 near the elastic fixing plate 13; the lower end of the lifting cylinder 17 is provided with a feed inlet 14 near the coal mill box 1; the coal mill box 1 and the lifting cylinder 17 are connected through the feed inlet 14.

[0028] In this embodiment, it is convenient to connect and recover coal pieces that cannot pass through filter holes 15.

[0029] In a further preferred embodiment of this utility model, such as Figure 1-3 As shown, the recycling assembly 3 also includes a first motor 18 installed on the top of the lifting cylinder 17, and the output end of the first motor 18 is inserted into the inside of the lifting cylinder 17 and fixedly connected to a spiral rod 19.

[0030] In this embodiment, it is convenient to lift coal blocks that cannot pass through the filter hole 15.

[0031] In a further preferred embodiment of this utility model, such as Figure 1-3 As shown, the feeding assembly 2 includes a feeding pipe 6 that is connected to the middle of the top of the coal mill box 1. The top of the feeding pipe 6 is connected to a feeding hood 5. The upper side of the lifting cylinder 17 is connected to a discharge pipe 20, which extends into the inside of the feeding hood 5.

[0032] In this embodiment, it is convenient to refeed and re-crush.

[0033] In a further preferred embodiment of this utility model, such as Figure 1-5 As shown, the feeding assembly 2 includes a second motor 7 installed on one side of the feeding pipe 6. The output end of the second motor 7 is inserted into the feeding pipe 6 and fixedly connected to a rotating rod 8. The extended end of the rotating rod 8 is rotatably connected to the inner wall of the other side of the feeding pipe 6. A feeding plate 9 is fixedly connected to the four sides of the rotating rod 8.

[0034] In this embodiment, slow feeding is facilitated.

[0035] In a further preferred embodiment of this utility model, such as Figure 1-2 As shown, the coal grinding assembly includes two third motors 10 installed on the front side of the upper end of the coal grinding box 1. The output ends of the two third motors 10 are inserted into the inside of the coal grinding box 1 and fixedly connected to the crushing cylinder 11. Guide blocks 12 are fixedly connected to both sides of the top of the inside of the coal grinding box 1.

[0036] In this embodiment, it is convenient to crush and grind the coal blocks.

[0037] In a further preferred embodiment of this utility model, such as Figure 1-4 As shown, the separating component 4 includes a discharge port 21 opened at the bottom of the coal mill box 1. The collection box 26 and the interior of the coal mill box 1 are connected through the discharge port 21. The two sides of the discharge port 21 are respectively connected to the mounting grooves 22. Electric telescopic rods 23 are respectively installed inside the two mounting grooves 22. The telescopic ends of the two electric telescopic rods 23 are respectively fixedly connected to the separating plates 24. Rubber strips 25 are respectively fixedly connected around the two separating plates 24.

[0038] In this embodiment, to facilitate separation and prevent external air from entering the collection box 26, the two electric telescopic rods 23 are controlled by a controller to operate synchronously at the same speed.

[0039] In a further preferred embodiment of this utility model, such as Figure 1-2 As shown, a stirring device 27 is installed inside the collection box 26.

[0040] In this embodiment, it is convenient to stir the coal inside the collection box 26 to avoid secondary clumping.

[0041] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0042] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0043] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0044] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A boiler coal mill, characterized in that, include: The coal mill box has a feeding assembly at the top, a coal milling assembly at the upper part of the interior, and a recovery assembly at the lower part of the interior. The bottom of the coal mill box is equipped with a partition component, and a collection box is fixedly connected to the bottom of the coal mill box; The recycling component includes a removable and fixed elastic fixing plate that is fixedly connected to the lower end of the coal mill box. The elastic fixing plate has several filter holes in the middle, and vibration motors are installed on both sides of the lower end of the elastic fixing plate. The elastic fixing plate is in an inclined state.

2. A boiler coal mill as described in claim 1, characterized in that, The recycling assembly also includes an externally fixedly connected lifting cylinder to the inclined lower side of the coal mill box near the elastic fixed plate; A feed inlet is provided at the lower end of the elevator cylinder, near the coal mill box. The coal mill box and the elevator cylinder are connected by a feed inlet.

3. A boiler coal mill as described in claim 2, characterized in that, The recycling assembly also includes a first motor installed at the top of the lifting cylinder, with the output end of the first motor inserted into the inside of the lifting cylinder and fixedly connected to a screw rod.

4. A boiler coal mill as described in claim 2, characterized in that, The feeding assembly includes a feeding pipe that is connected to the middle of the top of the coal mill box, a feeding hood that is connected to the top of the feeding pipe, a discharge pipe that is connected to one side of the upper end of the lifting cylinder, and the discharge pipe that extends into the inside of the feeding hood.

5. A boiler coal mill as described in claim 4, characterized in that, The feeding assembly includes a second motor installed on one side of the feeding pipe. The output end of the second motor passes through the feeding pipe and is fixedly connected to a rotating rod. The extended end of the rotating rod is rotatably connected to the inner wall of the other side of the feeding pipe. Feeding plates are fixedly connected around the rotating rod.

6. A boiler coal mill as described in claim 1, characterized in that, The coal grinding assembly includes two third motors installed on the front side of the upper end of the coal grinding box. The output ends of the two third motors are inserted into the inside of the coal grinding box and fixedly connected to the crushing cylinder. Guide blocks are fixedly connected to both sides of the top of the inside of the coal grinding box.

7. A boiler coal mill as described in claim 1, characterized in that, The separating component includes a discharge port at the bottom of the coal mill box. The interior of the collecting box and the coal mill box are connected through the discharge port. There are mounting slots on both sides of the discharge port. Electric telescopic rods are installed in the two mounting slots. The telescopic ends of the two electric telescopic rods are fixedly connected to the separating plates. Rubber strips are fixedly connected around the perimeter of the two separating plates.

8. A boiler coal mill as described in claim 7, characterized in that, The collection tank is equipped with a stirring device.

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