Conveying device for fuel of thermal power plant

Abstract

The utility model relates to the technical field of conveying devices, and discloses a conveying device for fuel of a thermal power plant, which comprises a conveying box, crushing rollers are symmetrically and rotatably connected on the inner side wall of the conveying box, a rotating shaft is arranged at the bottom end of each crushing roller, and two ends of each rotating shaft are rotatably connected with the inner side wall of the conveying box. Cams are symmetrically and fixedly connected to the outer wall of the rotating shaft, a screening assembly is arranged at the bottom ends of the cams and slidably arranged on the inner side wall of the conveying box, a driving assembly is fixedly arranged on the outer wall of one side of the conveying box, and an output shaft of the driving assembly is fixedly connected with the crushing rollers and one end of the rotating shaft; the outer walls of the two sides of the conveying box are jointly and slidably provided with a material conveying assembly. According to the utility model, through the arrangement of the crushing roller and the screening assembly, small-particle coal is sieved, and incompletely crushed coal is continuously crushed, so that the coal can be fully combusted after being put into a boiler, and through the arrangement of the conveying assembly, the crushed small-particle coal is more uniformly and stably distributed on the conveying belt and is not easy to scatter all around.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying devices, in particular to a transmission device used for fuel in a thermal power plant. Background Art

[0002] Thermal power generation is a method of generating electricity by converting the heat energy generated by the combustion of combustibles into electrical energy through a power generation device. At present, thermal power plants use coal as the main fuel. In order to reduce manpower input, coal is usually transported to the boiler of the coal-fired unit through a transmission device.

[0003] However, the existing transmission devices used for thermal power generation fuel still have some shortcomings, such as: coal usually needs to be crushed so that it can be burned more fully in the boiler, but part of the coal is often not completely crushed after one crushing, which affects its combustion efficiency; the discharge port of the conveying device is usually fixed when discharging, and the coal is easy to accumulate in a hill shape on the conveyor belt during transportation. It is unstable during transportation and easy to scatter around.

[0004] Therefore, we propose a transmission device for fuel use in a thermal power plant in order to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a transmission device for fuel used in thermal power plants, so as to solve the problems raised in the above-mentioned background technology that part of the coal is often not completely crushed after one crushing, which affects its combustion efficiency, and the discharge port of the conveying device is usually fixed when discharging, and the coal is easy to accumulate in a hill shape on the conveyor belt during discharge and transportation, and it is unstable during transportation and easy to scatter around.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission device for fuel used in a thermal power plant, comprising a conveying box, a crushing roller is symmetrically rotatably connected to the inner wall of the conveying box, a rotating shaft is arranged at the bottom end of the crushing roller, both ends of the rotating shaft are rotatably connected to the inner wall of the conveying box, a cam is symmetrically fixedly connected to the outer wall of the rotating shaft, a screening assembly is arranged at the bottom end of the cam, the screening assembly is slidably arranged with the inner wall of the conveying box, a driving assembly is fixedly arranged on the outer wall of one side of the conveying box, the output shaft of the driving assembly is respectively fixedly connected to the crushing roller and one end of the rotating shaft, and a feeding assembly is slidably arranged on the outer walls on both sides of the conveying box.

[0007] Preferably, the driving assembly includes a protective shell fixedly connected to the outer wall of one side of the conveying box, two first wheel axles rotatably connected to the outer wall of one side of the conveying box, and a second wheel axle rotatably connected to the outer wall of one side of the conveying box, the two first wheel axles are respectively fixedly connected to one end of the two crushing rollers, the second wheel axle is fixedly connected to one end of the rotating shaft, a driving motor is fixedly connected to the inner wall of the protective shell, and the output shaft of the driving motor is fixedly connected to one end of one of the first wheel axles.

[0008] Preferably, the drive assembly also includes a first pulley fixedly connected to the side walls of the two first wheel axles and a second pulley fixedly connected to the side wall of the second wheel axle, the two first pulleys are cross-driven by belts, and one of the first pulleys and the second pulley is synchronously driven by a belt.

[0009] Preferably, the screening assembly includes an installation frame slidably arranged on the inner wall of the conveying box, a screen is installed inside the installation frame, springs are fixedly connected to the four corners of the bottom surface of the installation frame, each end of the spring away from the installation frame is fixedly connected to a limiting seat, and each of the limiting seats is fixedly connected to the inner wall of the conveying box.

[0010] Preferably, slide grooves are provided on both side outer walls of the conveying box, and a discharge pipe is fixedly connected through the bottom surface of the conveying box.

[0011] Preferably, the feeding assembly includes two sliding rods fixedly arranged on the inner walls of the two slide grooves respectively, each of the sliding rods is slidably connected to a slider on the side wall, each of the sliders is fixedly connected to a connecting rod, one end of the two connecting rods is commonly and fixedly connected to a feeding head, the discharge pipe is connected to the inside of the feeding head through a telescopic hose, telescopic cylinders are fixedly connected to the outer walls on both sides of the conveying box, the two telescopic cylinders are synchronously arranged, and the movable end of each telescopic cylinder is fixedly connected to the side wall of the connecting rod on the same side.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Through the crushing roller and screening assembly, large pieces of coal are broken into small particles and fall into the screening assembly. When the cam rotates, it presses against the screening assembly to compress the spring. When the cam is separated from the mounting frame, the spring bounces it up, causing the screen to vibrate and screen out small particles of coal. The incompletely crushed coal continues to be crushed so that it can be fully burned after being put into the boiler.

[0014] 2. Through the set feeding assembly, the two telescopic cylinders push and pull the connecting rod synchronously, so that the slider slides along the slide rod. At the same time, the two connecting rods drive the feeding head to move back and forth, so that the crushed small particles of coal are distributed more evenly and stably on the conveyor belt and are not easy to scatter around. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the conveying box in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the driving component part of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the screening component part in the utility model;

[0019] Figure 5 It is a structural schematic diagram of the feeding component part in the utility model.

[0020] In the figure: 1. conveying box; 11. chute; 12. discharge pipe; 2. crushing roller; 3. rotating shaft; 4. cam; 5. screening assembly; 51. mounting frame; 52. screen; 53. spring; 54. limit seat; 6. driving assembly; 61. protective shell; 62. first wheel shaft; 621. first pulley; 63. second wheel shaft; 631. second pulley; 64. driving motor; 7. feeding assembly; 71. sliding rod; 72. sliding block; 73. connecting rod; 74. feeding head; 75. telescopic cylinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1-Figure 4 A transmission device for fuel used in a thermal power plant comprises a conveying box 1, on the inner wall of the conveying box 1, a crushing roller 2 is symmetrically rotatably connected, a rotating shaft 3 is arranged at the bottom end of the crushing roller 2, both ends of the rotating shaft 3 are rotatably connected to the inner wall of the conveying box 1, a cam 4 is symmetrically fixedly connected to the outer wall of the rotating shaft 3, a screening component 5 is arranged at the bottom end of the cam 4, the screening component 5 is slidably arranged with the inner wall of the conveying box 1, a driving component 6 is fixedly arranged on the outer wall of one side of the conveying box 1, and the output shaft of the driving component 6 is respectively fixedly connected to the crushing roller 2 and one end of the rotating shaft 3, and a feeding component 7 is slidably arranged on the outer walls on both sides of the conveying box 1.

[0024] The driving assembly 6 includes a protective shell 61 fixedly connected to the outer wall of one side of the conveying box 1, two first wheel axles 62 rotatably connected to the outer wall of one side of the conveying box 1, and a second wheel axle 63 rotatably connected to the outer wall of one side of the conveying box 1. The two first wheel axles 62 are respectively fixedly connected to one end of the two crushing rollers 2, the second wheel axle 63 is fixedly connected to one end of the rotating shaft 3, and a driving motor 64 is fixedly connected to the inner wall of the protective shell 61, and the output shaft of the driving motor 64 is fixedly connected to one end of one of the first wheel axles 62.

[0025] The driving assembly 6 also includes a first pulley 621 fixedly connected to the side walls of the two first wheel shafts 62 and a second pulley 631 fixedly connected to the side wall of the second wheel shaft 63. The two first pulleys 621 are cross-driven by belts, and one of the first pulleys 621 and the second pulley 631 is synchronously driven by belts; thereby, the driving motor 64 can drive the two crushing rollers 2 to rotate in opposite directions and drive the rotating shaft 3 to rotate at the same time.

[0026] The screening assembly 5 includes an installation frame 51 slidably arranged on the inner wall of the conveying box 1, a screen 52 is installed inside the installation frame 51, and springs 53 are fixedly connected to the four corners of the bottom surface of the installation frame 51. One end of each spring 53 away from the installation frame 51 is fixedly connected to a limiting seat 54, and each limiting seat 54 is fixedly connected to the inner wall of the conveying box 1.

[0027] In this embodiment: after the coal used as fuel enters the conveying box 1, the driving assembly 6 drives the two crushing rollers 2 to rotate in opposite directions, breaking the large pieces of coal into small particles, and then falling to the screening assembly 5. The rotating shaft 3 drives the cam 4 to rotate and abuts against the mounting frame 51 of the screening assembly 5, compressing the spring 53. When the cam 4 is separated from the mounting frame 51, the spring 53 bounces it up, causing the screen 52 to shake, and small particles of coal are screened out. By crushing and screening larger pieces of coal, the effect of making it burn more fully is achieved.

[0028] Example 2

[0029] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 and Figure 5 The outer walls of both sides of the conveying box 1 are provided with chutes 11, and the bottom surface of the conveying box 1 is penetrated and fixedly connected with a discharge pipe 12.

[0030] The feeding assembly 7 includes two sliding rods 71 ​​fixedly arranged on the inner walls of the two slide grooves 11 respectively, and a slider 72 is slidably connected to the side wall of each sliding rod 71, and a connecting rod 73 is fixedly connected to the side wall of each slider 72. One end of the two connecting rods 73 is commonly fixedly connected to a feeding head 74, and the discharge pipe 12 is connected to the inside of the feeding head 74 through a telescopic hose. Telescopic cylinders 75 are fixedly connected to the outer walls on both sides of the conveying box 1. The two telescopic cylinders 75 are synchronously arranged, and the movable end of each telescopic cylinder 75 is fixedly connected to the side wall of the connecting rod 73 on the same side.

[0031] In this embodiment: the small particles of coal that have been crushed and screened enter the feeding head 74 through the telescopic hose. At this time, the two telescopic cylinders 75 synchronously push and pull the connecting rod 73, so that the slider 72 slides along the slide rod 71. At the same time, the two connecting rods 73 drive the feeding head 74 to move back and forth, making the feeding more uniform and stable.

[0032] Working principle: After the coal enters the conveying box 1, the driving motor 64 drives one of the first pulleys 621 to rotate. The two first pulleys 621 drive the two crushing rollers 2 to rotate in opposite directions through the cross-belt transmission. One of the first pulleys 621 drives synchronously with the second pulley 631 to drive the rotating shaft 3 to rotate. The rotating shaft 3 drives the cam 4 to rotate. When the cam 4 and the screening component 5 are against each other, the spring 53 is compressed. When the cam 4 and the screening component 5 are separated, the spring 53 bounces the screening component 5. The small particles of coal that have been crushed and screened enter the conveying head 74 through the telescopic tube and the discharge pipe 12. At this time, the two synchronously arranged telescopic cylinders 75 drive the conveying component 7 to move back and forth, and evenly convey the coal to the external conveyor belt.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fuel transmission device for a thermal power plant, comprising a transmission box (1), characterized in that: A crushing roller (2) is symmetrically rotatably connected to the inner wall of the conveying box (1), a rotating shaft (3) is provided at the bottom end of the crushing roller (2), both ends of the rotating shaft (3) are rotatably connected to the inner wall of the conveying box (1), a cam (4) is symmetrically fixedly connected to the outer wall of the rotating shaft (3), a screening component (5) is provided at the bottom end of the cam (4), and the screening component (5) is slidably arranged with the inner wall of the conveying box (1), a driving component (6) is fixedly arranged on one side of the outer wall of the conveying box (1), and the output shaft of the driving component (6) is fixedly connected to the crushing roller (2) and one end of the rotating shaft (3), respectively, and a feeding component (7) is slidably arranged on the outer walls of both sides of the conveying box (1).

2. A fuel transmission device for a thermal power plant according to claim 1, characterized in that: The driving assembly (6) comprises a protective shell (61) fixedly connected to the outer wall of one side of the conveying box (1), two first wheel shafts (62) rotatably connected to the outer wall of one side of the conveying box (1), and a second wheel shaft (63) rotatably connected to the outer wall of one side of the conveying box (1), the two first wheel shafts (62) are respectively fixedly connected to one end of two crushing rollers (2), the second wheel shaft (63) is fixedly connected to one end of the rotating shaft (3), and a driving motor (64) is fixedly connected to the inner wall of the protective shell (61), and the output shaft of the driving motor (64) is fixedly connected to one end of one of the first wheel shafts (62).

3. A transmission device for fuel used in a thermal power plant according to claim 2, characterized in that: The driving assembly (6) further comprises a first pulley (621) fixedly connected to the side walls of the two first wheel shafts (62) and a second pulley (631) fixedly connected to the side wall of the second wheel shaft (63), the two first pulleys (621) being cross-driven by belts, and one of the first pulleys (621) and the second pulley (631) being synchronously driven by belts.

4. A fuel transmission device for a thermal power plant according to claim 3, characterized in that: The screening assembly (5) comprises a mounting frame (51) slidably arranged on the inner wall of the conveying box (1), a screen (52) being installed inside the mounting frame (51), springs (53) being fixedly connected to the four corners of the bottom surface of the mounting frame (51), one end of each of the springs (53) away from the mounting frame (51) being fixedly connected to a limiting seat (54), and each of the limiting seats (54) being fixedly connected to the inner wall of the conveying box (1).

5. The transmission device for fuel used in a thermal power plant according to claim 1, characterized in that: Slide grooves (11) are provided on both side outer walls of the conveying box (1), and a discharge pipe (12) is fixedly connected to and penetrates the bottom surface of the conveying box (1).

6. A fuel transmission device for a thermal power plant according to claim 5, characterized in that: The feeding assembly (7) comprises two sliding rods (71) respectively fixedly arranged on the inner walls of the two slide grooves (11); a slider (72) is slidably connected to the side wall of each sliding rod (71); a connecting rod (73) is fixedly connected to the side wall of each sliding rod (72); one end of the two connecting rods (73) is commonly fixedly connected to a feeding head (74); the discharge pipe (12) is connected to the inside of the feeding head (74) through a telescopic hose; a telescopic cylinder (75) is fixedly connected to the outer walls of both sides of the conveying box (1); the two telescopic cylinders (75) are synchronously arranged; and the movable end of each telescopic cylinder (75) is fixedly connected to the side wall of the connecting rod (73) on the same side.

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