Coal screening device of heat supply boiler

Abstract

The utility model discloses a coal screening device of a heat supply boiler, and belongs to the technical field of aggregate treatment, a conveying belt is located on the side face of a screening box, a discharging port parallel to the conveying belt is formed in the screening box, an impact wall is arranged on the side face of the discharging port, an inclined screening plate is movably arranged in the screening box, a material guide plate penetrates through the discharging port, and the impact wall is arranged on the side face of the discharging port. The dust suction pump is located above the screening plate and communicates with the interior of the screening box through a dust discharging pipe, a beating structure is rotationally arranged on the rear wall of the screening box, a beating part matched with the beating structure is arranged on the side face of the material guiding plate, a transverse plate is arranged on the side face of the beating arm, and a cushioning spring is arranged between the beating plate and the transverse plate. And the screw rod is also in threaded connection with an adjusting nut. The coal falls into the discharging opening by means of inertia under the action of the impact wall, the screening plate can be vibrated and beaten through cooperation of the beating part and the beating structure, so that the screening efficiency is further improved, and the beating strength can be further adjusted through cooperation of an adjusting nut and a cushioning spring.

Description

Technical Field

[0001] The utility model relates to the technical field of aggregate processing, in particular to a coal screening device for a heating boiler. Background Art

[0002] Coal is a solid combustible mineral that is gradually formed by ancient plants buried underground and undergoing complex biochemical and physical and chemical changes. Coal is praised as black gold and food for industry. Coal is also one of the indispensable sources of energy for our production and life. The supply of coal is also related to the stability of the development of our industry and even the entire society. Boiler is an energy conversion device. The energy input to 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.

[0003] Application number: CN202122902005.1 discloses a coal ore screening device for steam boilers, belonging to the field of boiler coal screening. A coal ore screening device for steam boilers, including two side plates, the right ends of the two side plates are respectively provided with pillars one, the left ends of the two side plates are respectively provided with pillars two, and the sides of the two pillars two that are relatively close to each other are respectively provided with guide plates one, two and three from top to bottom, respectively, and the first-level filter, the second-level filter and the third-level filter are respectively driven by a vibration motor to vibrate, and the first-level filter, the second-level filter and the third-level filter are used to screen and filter the coal, and the screened coal falls into the corresponding guide plates one, two and three respectively and is discharged, the first-level filter, the second-level filter and the third-level filter are inclined, and the coal screened by the first-level filter will be discharged after being screened by the second-level filter and the third-level filter, which can effectively screen the coal and distinguish and hold the screened coal.

[0004] The coal screening devices in the above-mentioned comparative documents have average screening efficiency, and loading is time-consuming and laborious. They cannot cooperate with the conveyor belt to screen while conveying. Therefore, a coal screening device for a heating boiler is designed here to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a coal screening device for a heating boiler in order to solve the problems that the traditional coal screening device has average screening efficiency, is laborious and time-consuming to load materials, and cannot cooperate with a conveyor belt to screen while conveying.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a coal screening device for a heating boiler, comprising a conveying mechanism and a screening mechanism, the conveying mechanism comprising a conveying roller and a conveyor belt, the screening mechanism comprising a screening box, the conveyor belt is located on the side of the screening box, a feeding port parallel to the conveyor belt is provided on the screening box, an impact wall is provided on the side of the feeding port, an inclined screening plate is movably provided inside the screening box, a discharging port is provided on the side of the screening box away from the conveyor belt, a guide plate is provided on one side of the screening plate, and the guide plate penetrates A dust suction pump is arranged on the top of the screening box through the discharge port, and the dust suction pump is located above the screening plate and is connected with the interior of the screening box through a dust exhaust pipe. A knocking structure is rotatably arranged on the rear wall of the screening box, and a knocking part cooperating with the knocking structure is arranged on the side of the guide plate. The knocking structure includes multiple groups of knocking arms, and a horizontal plate is arranged on the side of the knocking arm. A screw is movably arranged on the horizontal plate, and a knocking plate is fixedly arranged on the outer side of the screw, a shock-absorbing spring is arranged between the knocking plate and the horizontal plate, and an adjusting nut is also threadedly connected to the screw.

[0007] As a further solution of the utility model: both sides of the conveying roller are rotatably arranged on supporting legs, and a plurality of groups of vertical plates are arranged at intervals on the surface of the conveying belt.

[0008] As a further solution of the utility model: a return spring is connected to the diagonal portion of the screening plate, and the screening plate is connected to the inner wall of the screening box through the return spring.

[0009] As a further solution of the utility model: a motor is installed on the top of the screening box, and the motor is connected to the knocking structure through a belt.

[0010] The utility model provides a coal screening device for a heating boiler through improvement, which has the following improvements and advantages compared with the prior art:

[0011] The utility model can efficiently transport coal through the cooperation of the conveying mechanism and the screening mechanism, and the coal falls into the screening box by inertia, wherein the coal falls into the discharge port by inertia and under the action of the impact wall, and is fully screened by the screening plate. The smaller coal falls into the bottom of the screening box, and the larger coal blocks are discharged from the screening box through the guide plate. The screening plate can be vibrated and knocked by the cooperation of the knocking part and the knocking structure, thereby further improving the screening efficiency. The knocking force can be further adjusted by adjusting the cooperation of the nut and the shock absorbing spring. This structure greatly improves the practicality and stability of the coal screening device of the heating boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 It is a three-dimensional structure of the utility model Figure 1 ;

[0014] Figure 2 It is the internal structure diagram of the utility model;

[0015] Figure 3 It is a three-dimensional structure of the utility model Figure 2 ;

[0016] Figure 4 yes Figure 3 A magnified view of the structure at center.

[0017] Description of reference numerals:

[0018] 1. Conveying mechanism; 2. Screening mechanism; 3. Support legs; 4. Conveying rollers; 5. Conveyor belt; 6. Vertical plate; 7. Screening box; 8. Feeding port; 9. Impact wall; 10. Screening plate; 11. Reset spring; 12. Guide plate; 13. Feeding port; 14. Beating part; 15. Dust exhaust pipe; 16. Dust suction pump; 17. Motor; 18. Beating structure; 19. Beating arm; 20. Horizontal plate; 21. Screw; 22. Beating plate; 23. Shock-absorbing spring; 24. Adjusting nut; 25. Belt. DETAILED DESCRIPTION

[0019] The following will be combined with the attached Figures 1 to 4 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.

[0020] The utility model provides a coal screening device for a heating boiler through improvement. Figure 1-Figure 4As shown, a coal screening device for a heating boiler comprises a conveying mechanism 1 and a screening mechanism 2, wherein the conveying mechanism 1 comprises a conveying roller 4 and a conveyor belt 5, and the screening mechanism 2 comprises a screening box 7, wherein the conveyor belt 5 is located on the side of the screening box 7, and a discharge port 8 parallel to the conveyor belt 5 is provided on the screening box 7, and an impact wall 9 is provided on the side of the discharge port 8, and an inclined screening plate 10 is movably provided inside the screening box 7, and a discharge port 13 is provided on the side of the screening box 7 away from the conveyor belt 5, and a guide plate 12 is provided on one side of the screening plate 10, and the guide plate 12 passes through the discharge port 13, and a top of the screening box 7 is provided. There is a dust suction pump 16, which is located above the screening plate 10 and is connected to the interior of the screening box 7 through a dust exhaust pipe 15. A knocking structure 18 is rotatably provided on the rear wall of the screening box 7. A knocking portion 14 cooperating with the knocking structure 18 is provided on the side of the guide plate 12. The knocking structure 18 includes multiple groups of knocking arms 19, and a horizontal plate 20 is provided on the side of the knocking arm 19. A screw 21 is movably provided on the horizontal plate 20, and a knocking plate 22 is fixedly provided on the outer side of the screw 21. A shock-absorbing spring 23 is provided between the knocking plate 22 and the horizontal plate 20, and an adjusting nut 24 is also threadedly connected to the screw 21.

[0021] The utility model can efficiently transport coal through the cooperation of the conveying mechanism 1 and the screening mechanism 2, and the coal falls into the screening box 7 by inertia, wherein the coal falls into the discharge port 8 by inertia and under the action of the impact wall 9, and is fully screened by the screening plate 10. The smaller coal falls into the bottom of the screening box 7, and the larger coal blocks are discharged from the screening box 7 through the guide plate 12. The screening plate 10 can be vibrated and knocked by the cooperation of the knocking part 14 and the knocking structure 18, thereby further improving the screening efficiency. The knocking force can be further adjusted by the cooperation of the adjusting nut 24 and the damping spring 23. This structure greatly improves the practicality and stability of the coal screening device of the heating boiler.

[0022] See attached Figure 1 -Attached Figure 2 The two sides of the conveying roller 4 are rotatably arranged on the supporting legs 3, and a plurality of groups of vertical plates 6 are arranged at intervals on the surface of the conveying belt 5.

[0023] In this embodiment, in order to screen the coal by inertia, further improve the transportation efficiency, and prevent the coal from rolling down, a plurality of groups of vertical plates 6 are arranged at intervals on the surface of the conveyor belt 5 .

[0024] See attached Figure 1 -Attached Figure 2 A return spring 11 is connected to the diagonal portion of the screening plate 10 , and the screening plate 10 is connected to the inner wall of the screening box 7 through the return spring 11 .

[0025] In this embodiment, in order to further improve the screening efficiency of the screening plate 10 , the screening plate 10 is connected to the inner wall of the screening box 7 via a return spring 11 .

[0026] See attached Figure 2 -Attached Figure 3 A motor 17 is installed on the top of the screening box 7, and the motor 17 is connected to the beating structure 18 through a belt 25.

[0027] In this embodiment, in order to drive the beating structure 18 to intermittently beat the guide plate 12, thereby driving the screening plate 10 to vibrate and further improve the coal screening efficiency, a motor 17 is installed on the top of the screening box 7.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coal screening device for a heating boiler, characterized in that: The invention comprises a conveying mechanism (1) and a screening mechanism (2), wherein the conveying mechanism (1) comprises a conveying roller (4) and a conveying belt (5), and the screening mechanism (2) comprises a screening box (7), wherein the conveying belt (5) is located on the side of the screening box (7), and a discharge port (8) parallel to the conveying belt (5) is provided on the screening box (7), and an impact wall (9) is provided on the side of the discharge port (8), and an inclined screening plate (10) is movably provided inside the screening box (7), and a discharge port (13) is provided on the side of the screening box (7) away from the conveying belt (5), and a guide plate (12) is provided on one side of the screening plate (10), and the guide plate (12) passes through the discharge port (13), and a dust suction pump (12) is provided on the top of the screening box (7). 6), the dust suction pump (16) is located above the screening plate (10) and is connected to the interior of the screening box (7) through a dust exhaust pipe (15), a knocking structure (18) is rotatably arranged on the rear wall of the screening box (7), a knocking portion (14) cooperating with the knocking structure (18) is arranged on the side of the guide plate (12), the knocking structure (18) includes a plurality of groups of knocking arms (19), a transverse plate (20) is arranged on the side of the knocking arm (19), a screw rod (21) is movably arranged on the transverse plate (20), a knocking plate (22) is fixedly arranged on the outer side of the screw rod (21), a shock absorbing spring (23) is arranged between the knocking plate (22) and the transverse plate (20), and an adjusting nut (24) is also threadedly connected to the screw rod (21).

2. The coal screening device for a heating boiler according to claim 1, characterized in that: Both sides of the conveying roller (4) are rotatably arranged on the supporting legs (3), and a plurality of groups of vertical plates (6) are arranged at intervals on the surface of the conveying belt (5).

3. The coal screening device for a heating boiler according to claim 1, characterized in that: A return spring (11) is connected to the diagonal portion of the screening plate (10), and the screening plate (10) is connected to the inner wall of the screening box (7) via the return spring (11).

4. The coal screening device for a heating boiler according to claim 1, characterized in that: A motor (17) is installed on the top of the screening box (7), and the motor (17) is connected to the beating structure (18) via a belt (25).

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