Pulverized coal feeding device with sieving structure for boiler

Abstract

The utility model relates to the technical field of boilers, in particular to a pulverized coal feeding device with a screening structure for a boiler, which comprises a feeding box, a screening mechanism and a remolding mechanism, the feeding box can adjust pulverized coal required to be added and used to a proper size, the screening mechanism is used for screening the pulverized coal required to be added and used, and the remolding mechanism is used for remolding the pulverized coal required to be added and used. The feeding device comprises a feeding box, a screening mechanism and a remolding mechanism, the screening mechanism can screen and filter pulverized coal needing to be added and used and screen out improper pulverized coal, the remolding mechanism is installed on the surface of one side of the feeding box, and the remolding mechanism can transport the improper pulverized coal screened out by the screening mechanism to a grinding position to be smashed. According to the utility model, through the matching of the screening mechanism and the remodeling mechanism, improper pulverized coal can be screened from pulverized coal which needs to be added and used, and the improper pulverized coal is crushed into proper size again.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a coal powder feeding device with a screening structure for a boiler. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The boiler consists of two major parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's lives, or can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator.

[0003] In the existing technology, the pulverized coal is mostly added manually when feeding the boiler. The difference between the lumpy and powdered coal is too large. The larger coal blocks burn slowly after addition, and it is easy to produce unburned coal blocks, which affects the full utilization of the pulverized coal. Therefore, the pulverized coal needs to be effectively crushed before adding it. However, the existing boilers lack effective screening of the pulverized coal when adding the pulverized coal, and are unable to crush the pulverized coal into a suitable size.

[0004] To this end, we propose a pulverized coal feeding device with a screening structure for boilers. Utility Model Content

[0005] The purpose of the utility model is to provide a coal powder feeding device with a screening structure for a boiler, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pulverized coal feeding device with a screening structure for a boiler, comprising a feeding box, a screening mechanism and a reshaping mechanism;

[0007] A feeding box, wherein a rotating rod is symmetrically mounted inside the feeding box, a crushing roller is mounted on the outer surface of the rotating rod, and a driven gear and a driving gear are mounted on one side of the feeding box located at the rotating rod, and both the driven gear and the driving gear are fixedly connected to the rotating rod;

[0008] A screening mechanism is installed inside the feeding box to screen and filter the pulverized coal;

[0009] A reshaping mechanism is installed on one side surface of the loading box.

[0010] Preferably, a rotating rod is symmetrically mounted inside the feed box for rotation, a crushing roller is mounted on the outer surface of the rotating rod, and a driven gear and a driving gear are mounted on one side of the feed box located at the rotating rod, and both the driven gear and the driving gear are fixedly connected to the rotating rod. When the rotating motor is started, the rotating motor drives the rotating rod to rotate, and the rotation of the rotating rod drives the driving gear and the driven gear to rotate together, and the rotation of the driving gear and the driven gear together drives the crushing roller to rotate, and the rotation of the crushing roller crushes the coal powder.

[0011] Preferably, the screening mechanism includes a screening drum, a guide plate symmetrically fixedly connected to the interior of the feeding box, a screening drum fixedly connected to the interior of the feeding box, a first connecting rod rotatably mounted inside the screening drum, a first spiral blade fixedly connected to the outer surface of the first connecting rod, and screening holes formed on the outer surface of the bottom end of the screening drum. The driving gear rotates, through the cooperation of the pulley and the connecting belt, to drive the first connecting rod to rotate, and the rotation of the first connecting rod drives the first spiral blade to rotate. Through the cooperation of the screening drum and the screening holes, suitable coal powder is screened and enters the recovery box.

[0012] Preferably, a pulley is installed on the outer surface of the driven gear, a pulley is installed on the outer surface of the feeding box located at the first connecting rod, and the pulley is fixedly connected to the first connecting rod, a connecting belt is installed between the pulleys, and a rotating motor is installed on the outer surface of the driving gear.

[0013] Preferably, the reshaping mechanism includes a drive motor, a transport drum fixedly connected to the outer surface of the top of one end of the screening drum, a second connecting rod rotatably mounted inside the transport drum, a second spiral blade fixedly connected to the outer surface of the second connecting rod, a drive motor mounted on the top surface of the transport drum, and the drive motor and the second connecting rod are fixedly connected, and a guide plate fixedly connected to the outer surface of the top of the transport drum. Unsuitable coal powder screened out is transferred to the second connecting rod under the action of the rotation of the first spiral blade, the drive motor is started, the drive motor drives the second connecting rod to rotate, the rotation of the second connecting rod drives the rotation of the second spiral blade, and the rotation of the second spiral blade transports the unsuitable coal powder screened out to the guide plate, which is then re-injected into the crushing roller for crushing through the cooperation of the guide plate.

[0014] Preferably, a recovery box is installed at the bottom end of the loading box.

[0015] Preferably, a control panel is installed on one side surface of the loading box, and the rotating motor and the driving motor are electrically controlled and connected by the control panel.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: through the cooperation of the rotating rod, the crushing roller, the driven gear and the driving gear, the coal powder of inappropriate size can be crushed; through the cooperation of the guide plate, the screening cylinder, the first connecting rod, the first spiral blade and the screening hole, the coal powder that needs to be added for use can be screened and filtered, and the inappropriate coal powder can be screened out; through the cooperation of the second connecting rod, the second spiral blade, the drive motor and the guide plate, the inappropriate coal powder screened out by the screening mechanism can be transported to the crushing roller for crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the overall structural diagrams of the utility model;

[0018] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0019] Figure 3 This is one of the cross-sectional structural diagrams of the present utility model;

[0020] Figure 4 This is the second schematic cross-sectional structure diagram of the present invention.

[0021] In the figure: 1. Feeding box; 2. Rotating rod; 3. Crushing roller; 4. Driven gear; 5. Driving gear; 6. Guide plate; 7. Screening drum; 8. First connecting rod; 9. First spiral blade; 10. Screening hole; 11. Pulley; 12. Connecting belt; 13. Rotating motor; 14. Transport drum; 15. Second connecting rod; 16. Second spiral blade; 17. Driving motor; 18. Guide plate; 19. Recovery box; 20. Control panel. DETAILED DESCRIPTION

[0022] The following will be combined with the 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.

[0023] See also Figure 1-4 A pulverized coal feeding device with a screening structure for a boiler, comprising a feeding box 1, a screening mechanism and a reshaping mechanism;

[0024] A feeding box 1 is provided, wherein a rotating rod 2 is symmetrically mounted inside the feeding box 1, a crushing roller 3 is mounted on the outer surface of the rotating rod 2, and a driven gear 4 and a driving gear 5 are mounted on one side of the feeding box 1 located at the rotating rod 2, and both the driven gear 4 and the driving gear 5 are fixedly connected to the rotating rod 2;

[0025] Screening mechanism: a screening mechanism is installed inside the feeding box 1, and the screening mechanism screens and filters the coal powder;

[0026] Reshaping mechanism: a reshaping mechanism is installed on one side surface of the loading box 1.

[0027] See also Figure 1-4 A rotating rod 2 is symmetrically mounted inside the feed box 1 for rotation. A crushing roller 3 is mounted on the outer surface of the rotating rod 2. A driven gear 4 and a driving gear 5 are mounted on one side of the feed box 1 located at the rotating rod 2. Both the driven gear 4 and the driving gear 5 are fixedly connected to the rotating rod 2. When the rotating motor 13 is started, the rotating motor 13 drives the rotating rod 2 to rotate. The rotation of the rotating rod 2 drives the driving gear 5 and the driven gear 4 to rotate together. The driving gear 5 and the driven gear 4 rotate together, which drives the crushing roller 3 to rotate. The rotation of the crushing roller 3 crushes the coal powder.

[0028] See also Figure 1-4 The screening mechanism includes a screening drum 7, a guide plate 6 symmetrically fixedly connected to the interior of the feed box 1, a screening drum 7 fixedly connected to the interior of the feed box 1, a first connecting rod 8 rotatably mounted within the screening drum 7, a first spiral blade 9 fixedly connected to the outer surface of the first connecting rod 8, and a screening hole 10 formed on the outer surface of the bottom end of the screening drum 7. The driving gear 5 rotates, driving the first connecting rod 8 through the cooperation of the pulley 11 and the connecting belt 12. The rotation of the first connecting rod 8 drives the first spiral blade 9 to rotate. Through the cooperation of the screening drum 7 and the screening holes 10, the suitable coal powder is screened and enters the recovery box 19.

[0029] See also Figure 1-4 A pulley 11 is installed on the outer surface of the driven gear 4, and a pulley 11 is installed on the outer surface of the loading box 1 located at the first connecting rod 8, and the pulley 11 is fixedly connected to the first connecting rod 8. A connecting belt 12 is installed between the pulleys 11, and a rotating motor 13 is installed on the outer surface of the driving gear 5.

[0030] See also Figure 1-4The reshaping mechanism includes a drive motor 17. A transport drum 14 is fixedly connected to the outer surface of the top of one end of the screening drum 7. A second connecting rod 15 is rotatably installed inside the transport drum 14. The outer surface of the second connecting rod 15 is fixedly connected to a second spiral blade 16. A drive motor 17 is installed on the top surface of the transport drum 14, and the drive motor 17 is fixedly connected to the second connecting rod 15. A guide plate 18 is fixedly connected to the outer surface of the top of the transport drum 14. Unsuitable coal powder screened out is transferred to the second connecting rod 15 under the action of the rotation of the first spiral blade 9. The drive motor 17 is started, and the operation of the drive motor 17 drives the second connecting rod 15 to rotate. The rotation of the second connecting rod 15 drives the rotation of the second spiral blade 16. The rotation of the second spiral blade 16 transports the unsuitable coal powder screened out to the guide plate 18, and then is re-injected into the crushing roller 3 for crushing through the cooperation of the guide plate 18.

[0031] See also Figure 1-4 A recovery box 19 is installed at the bottom end of the feeding box 1.

[0032] See also Figure 1-4 A control panel 20 is installed on one side surface of the loading box 1 , and the rotating motor 13 and the driving motor 17 are both electrically controlled and connected by the control panel 20 .

[0033] Working principle: When using this device, first start the rotating motor 13, and the rotating motor 13 drives the rotating rod 2 to rotate. The rotation of the rotating rod 2 drives the driving gear 5 and the driven gear 4 to rotate together. The driving gear 5 and the driven gear 4 rotate together to drive the crushing roller 3 to rotate. The crushing roller 3 rotates to crush the coal powder. The driving gear 5 rotates and drives the first connecting rod 8 to rotate through the cooperation of the pulley 11 and the connecting belt 12. The rotation of the first connecting rod 8 drives the first spiral blade 9 to rotate. Through the cooperation of the screening drum 7 and the screening hole 10, the suitable coal powder screened out enters the recovery box 19, and the unsuitable coal powder screened out reaches the second connecting rod 15 under the action of the rotation of the first spiral blade 9. Start the driving motor 17, and the driving motor 17 runs to drive the second connecting rod 15 to rotate. The rotation of the second connecting rod 15 drives the second spiral blade 16 to rotate. The rotation of the second spiral blade 16 transports the unsuitable coal powder screened out to the guide plate 18, and then re-injects it into the crushing roller 3 for crushing through the cooperation of the guide plate 18.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulverized coal feeding device with a screening structure for a boiler, characterized by: include, A feeding box (1), a screening mechanism and a reshaping mechanism; A feeding box (1), wherein a rotating rod (2) is symmetrically mounted inside the feeding box (1), a crushing roller (3) is mounted on the outer surface of the rotating rod (2), and a driven gear (4) and a driving gear (5) are mounted on one side of the feeding box (1) at the rotating rod (2), and both the driven gear (4) and the driving gear (5) are fixedly connected to the rotating rod (2); A screening mechanism is installed inside the feeding box (1), and the screening mechanism screens and filters the coal powder; A reshaping mechanism is installed on one side surface of the loading box (1).

2. The pulverized coal feeding device with a screening structure for a boiler according to claim 1, characterized in that: The screening mechanism comprises a screening drum (7), a guide plate (6) is symmetrically fixedly connected to the interior of the feeding box (1), a screening drum (7) is fixedly connected to the interior of the feeding box (1), a first connecting rod (8) is rotatably installed inside the screening drum (7), a first spiral blade (9) is fixedly connected to the outer surface of the first connecting rod (8), and a screening hole (10) is opened on the outer surface of the bottom end of the screening drum (7).

3. The pulverized coal feeding device with a screening structure for a boiler according to claim 1, characterized in that: A pulley (11) is installed on the outer surface of the driven gear (4), a pulley (11) is installed on the outer surface of the loading box (1) located at the first connecting rod (8), and the pulley (11) is fixedly connected to the first connecting rod (8), a connecting belt (12) is installed between the pulleys (11), and a rotating motor (13) is installed on the outer surface of the driving gear (5).

4. The pulverized coal feeding device with a screening structure for a boiler according to claim 2, characterized in that: The reshaping mechanism includes a driving motor (17), a top outer surface of one end of the screening cylinder (7) is fixedly connected to a transport cylinder (14), a second connecting rod (15) is rotatably installed inside the transport cylinder (14), the outer surface of the second connecting rod (15) is fixedly connected to a second spiral blade (16), a driving motor (17) is installed on the top surface of the transport cylinder (14), and the driving motor (17) is fixedly connected to the second connecting rod (15), and a guide plate (18) is fixedly connected to the outer surface of the top end of the transport cylinder (14).

5. The pulverized coal feeding device with a screening structure for a boiler according to claim 1, characterized in that: A recovery box (19) is installed at the bottom end of the feeding box (1).

6. The pulverized coal feeding device with a screening structure for a boiler according to claim 1, characterized in that: A control panel (20) is installed on one side surface of the loading box (1), and the rotating motor (13) and the driving motor (17) are both electrically controlled and connected by the control panel (20).

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