Coal blending combustion device for thermal power plant

Abstract

The utility model provides a thermal power plant coal blending combustion device, and relates to the technical field of coal blending combustion, the thermal power plant coal blending combustion device comprises a box body, the top of the box body is communicated with a feed hopper, the bottom of the box body is communicated with a discharge pipe, a plurality of crushing assemblies are arranged in the box body, a plurality of mounting assemblies are arranged outside the box body, and the crushing assemblies are connected with the mounting assemblies; the mounting assembly can move left and right along the box body; during use, coal is added into the box body from the feeding hopper, the multiple crushing assemblies crush the coal, the crushing condition of the coal and whether blockage occurs or not are observed, and the crushing assemblies are driven to move by moving the mounting assembly until the distance between the crushing assemblies reaches a target value; the crushed coal is discharged from the discharge pipe and is fed into the boiler for combustion; according to the coal crushing device, by arranging the mounting assembly, a worker can adjust the distance between the crushing assemblies according to actual use requirements so that coal can be crushed into target particle sizes, meanwhile, it is guaranteed that discharging of the coal is smooth, blockage is avoided, and the applicability of the device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of coal blending and co-firing, and in particular to a coal blending and co-firing device for a thermal power plant. Background Art

[0002] Blending technology is the process of generating electricity by mixing several different types of coal with different properties in a certain proportion when coal is burned in a boiler. For example, Chinese patent CN202222663106.2 discloses a low calorific value coal blending device for a large thermal power plant. The disclosed technical solution includes: a boiler and a crushing mechanism, wherein a base is fixedly mounted on the lower surface of the boiler, a feed port is provided in the middle of the upper surface of the boiler, the crushing mechanism is provided directly above the boiler, and a screening mechanism is provided between the crushing mechanism and the boiler. The crushing mechanism includes a crushing frame and a crushing drum. The utility model provides a crushing mechanism by turning on the motor and pouring coal from above the protective frame. The rotation of the rotating shaft causes the rotating teeth to start rotating, driving the crushing drum on the tooth groove connected to it to start rotating. The raised blocks on the five crushing drums crush the coal, crushing the large pieces of coal, which then slides down along the inner wall of the conduit. Most current blending devices are too complicated. The application of this device effectively avoids the above problems and improves the practicality of the equipment.

[0003] This existing technology has certain disadvantages during use. The crushing cylinder is fixedly installed in the crushing frame, and the spacing of the crushing cylinders cannot be adjusted. If the spacing is too small, the coal may be blocked on the crushing cylinder, and if the spacing is too large, the crushing cylinder may not be able to crush the coal into the target particle size. When blending different types of coal, it is necessary to adjust the spacing of the crushing cylinders to crush the coal and ensure that the coal is discharged smoothly without blockage. This existing technology cannot adjust the spacing of the crushing cylinders according to actual use needs, and the device has poor applicability. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a coal blending and combustion device for a thermal power plant, which can solve the technical problems that the existing technology cannot adjust the spacing of the crushing cylinders according to actual usage requirements and the device has poor applicability.

[0005] An embodiment of the present application provides a coal blending and combustion device for a thermal power plant, comprising a box body, wherein the top of the box body is connected to a feed hopper, the bottom of the box body is connected to a discharge pipe, a plurality of crushing assemblies are arranged in the box body, and a plurality of mounting assemblies are arranged outside the box body, the crushing assemblies are connected to the mounting assemblies, and the mounting assemblies can move left and right along the box body.

[0006] Among them, the mounting assembly includes a mounting plate and a first slider, the first slider is fixedly arranged on the mounting plate, the outer wall of the box body is provided with a first slide groove, the first slider is slidingly connected to the first slide groove, the crushing assembly is connected to the mounting plate, and a locking assembly is provided between the mounting plate and the box body.

[0007] Among them, the locking assembly includes a connecting rod, a locking plate, an elastic member and a fixing plate, the connecting rod passes through the mounting plate, the locking plate is fixedly connected to one end of the connecting rod, the elastic member is pre-pressed between the mounting plate and the locking plate, the fixing plate is fixedly arranged on the box body, and the fixing plate is located between the mounting plate and the locking plate, and the locking plate can abut against the fixing plate.

[0008] A reinforcement component is provided between the mounting plate and the box body, and the reinforcement component includes a screw, a first magnetic block and a second magnetic block. The mounting plate is provided with a receiving groove, and the screw thread passes through the mounting plate and extends into the receiving groove. The first magnetic block is located in the receiving groove, and the first magnetic block is fixedly connected to one end of the screw, and the second magnetic block is fixedly provided on the outer wall of the box body, and the second magnetic block passes through the receiving groove, and the first magnetic block is magnetically connected to the second magnetic block.

[0009] Wherein, a handle is provided on the mounting plate, the other end of the connecting rod, and the other end of the screw rod respectively.

[0010] In which, the crushing assembly includes a motor, a rotating rod, a crushing roller and a second slider, one end of the rotating rod is rotatably connected to the mounting plate through a bearing, the box body is provided with a through hole, the other end of the rotating rod passes through the through hole and extends into the box body, the crushing roller is located in the box body, the motor drives the crushing roller to rotate through the rotating rod, the inner wall of the box body is provided with a second slide groove, the second slider is limitedly slidably connected to the second slide groove, and the other end of the rotating rod is rotatably connected to the second slider through a bearing.

[0011] There are two baffle plates in the box body, the crushing roller is located between the two baffle plates, and two cylinders are provided on the box body, which drive the baffle plates to move.

[0012] Wherein, a material blocking brush is arranged in the through hole.

[0013] Wherein, a screening plate is obliquely arranged below the crushing assembly, and a discharge pipe is connected to the side of the box body.

[0014] Wherein, the lower end of the box is provided with supporting legs.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a coal blending and combustion device for a thermal power plant. When in use, coal is added into a box from a feed hopper, and multiple crushing components crush the coal. The crushing condition of the coal and whether blockage occurs are observed, and the crushing components are driven to move by a mobile mounting component until the spacing of the crushing components reaches a target value. The crushed coal is discharged from a discharge pipe and sent to the boiler for combustion. By setting the mounting component, the present application allows the staff to adjust the spacing of the crushing components according to actual use needs, so as to crush the coal into a target particle size, while ensuring that the coal is discharged smoothly without blockage, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic cross-sectional view of the overall main structure in some embodiments of the present application;

[0019] Figure 2 A schematic diagram of the overall main view structure in some embodiments of the present application;

[0020] Figure 3 It is a schematic cross-sectional view of the overall side view structure in some embodiments of the present application;

[0021] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A;

[0022] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at point B.

[0023] The reference numerals are:

[0024] 1. Box body; 11. Feed hopper; 12. Discharge pipe; 13. First chute; 14. Through hole; 15. Second chute; 16. Baffle plate; 17. Cylinder; 18. Baffle brush; 19. Discharge pipe; 110. Support legs;

[0025] 2. Crushing assembly; 21. Motor; 22. Rotating rod; 23. Crushing roller; 24. Second slider;

[0026] 3. Mounting assembly; 31. Mounting plate; 32. First slider; 33. Accommodating slot;

[0027] 4. Locking assembly; 41. Connecting rod; 42. Locking plate; 43. Elastic member; 44. Fixing plate;

[0028] 5. Reinforcement assembly; 51. Screw; 52. First magnetic block; 53. Second magnetic block;

[0029] 6. Handle;

[0030] 7. Screening plate. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0036] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0037] like Figures 1 to 3 As shown, an embodiment of the present application provides a coal blending and combustion device for a thermal power plant, including a box body 1, a feed hopper 11 is connected to the top of the box body 1, a discharge pipe 12 is connected to the bottom of the box body 1, a plurality of crushing components 2 are arranged in the box body 1, and a plurality of mounting components 3 are arranged outside the box body 1, the crushing components 2 are connected to the mounting components 3, and the mounting components 3 can move left and right along the box body 1.

[0038] During use, coal is added into the box body 1 from the feed hopper 11, and multiple crushing components 2 crush the coal. The crushing condition of the coal and whether blockage occurs are observed, and the crushing components 2 are driven to move by the moving installation component 3 until the spacing of the crushing components 2 reaches the target value. The crushed coal is discharged from the discharge pipe 12 and sent to the boiler for combustion. By setting the installation component 3, the staff of this application can adjust the spacing of the crushing components 2 according to actual use needs, so as to crush the coal into the target particle size, while ensuring that the coal is discharged smoothly without blockage, thereby improving the applicability of the device.

[0039] like Figures 1 to 5 As shown, in this embodiment, the mounting assembly 3 includes a mounting plate 31 and a first slider 32. The first slider 32 is fixedly arranged on the mounting plate 31. The outer wall of the box body 1 is provided with a first slide groove 13. The first slider 32 is connected to the first slide groove 13 in a limited sliding manner. The crushing assembly 2 is connected to the mounting plate 31. A locking assembly 4 is provided between the mounting plate 31 and the box body 1.

[0040] During use, the movable mounting plate 31 drives the crushing assembly 2 to move until the spacing of the crushing assembly 2 reaches the target value; the first slider 32 cooperates with the first slide groove 13 to support, guide and limit the mounting plate 31.

[0041] like Figures 2 to 4 As shown, in this embodiment, the locking assembly 4 includes a connecting rod 41, a locking plate 42, an elastic member 43 and a fixing plate 44. The connecting rod 41 passes through the mounting plate 31, and the locking plate 42 is fixedly connected to one end of the connecting rod 41. The elastic member 43 is pre-pressed between the mounting plate 31 and the locking plate 42. The fixing plate 44 is fixedly arranged on the box body 1, and the fixing plate 44 is located between the mounting plate 31 and the locking plate 42. The locking plate 42 can abut against the fixing plate 44.

[0042] The elastic member 43 is a spring; when in use, the connecting rod 41 is pushed to drive the locking plate 42 away from the fixed plate 44. At this time, the elastic member 43 is stretched, and then the mounting plate 31 is moved to drive the crushing assembly 2 to move until the spacing of the crushing assembly 2 reaches the target value. Then the connecting rod 41 is released, and under the elastic force of the elastic member 43, the connecting rod 41 drives the locking plate 42 to press against the fixed plate 44, and the mounting plate 31 can be locked and fixed on the box body 1; this application locks and fixes the position of the mounting plate 31 and the crushing assembly 2 by setting a locking assembly 4, thereby improving the stability of use.

[0043] like Figure 2 、 3 As shown in Figure 5, in this embodiment, a reinforcement component 5 is provided between the mounting plate 31 and the box body 1, and the reinforcement component 5 includes a screw 51, a first magnetic block 52 and a second magnetic block 53. The mounting plate 31 is provided with a receiving groove 33, and the screw 51 threadedly passes through the mounting plate 31 and extends into the receiving groove 33. The first magnetic block 52 is located in the receiving groove 33, and the first magnetic block 52 is fixedly connected to one end of the screw 51. The second magnetic block 53 is fixedly provided on the outer wall of the box body 1, and the second magnetic block 53 passes through the receiving groove 33. The first magnetic block 52 and the second magnetic block 53 are magnetically connected.

[0044] During use, after locking and fixing the mounting plate 31 on the box body 1, rotate the screw 51. Under the threaded cooperation between the screw 51 and the mounting plate 31, the screw 51 moves and drives the first magnetic block 52 to move to magnetically connect with the second magnetic block 53, so that the mounting plate 31 can be tightened and fixed; this application tightens and fixes the position of the mounting plate 31 and the crushing component 2 by setting a reinforcement component 5, thereby further improving the stability of use.

[0045] like Figures 2 to 5 As shown, in this embodiment, handles 6 are provided on the mounting plate 31, the other end of the connecting rod 41, and the other end of the screw 51 respectively; the handles 6 facilitate the staff to move the mounting plate 31, the connecting rod 41 or the screw 51, thereby improving the convenience of use.

[0046] like Figures 1 to 3 As shown, in this embodiment, the crushing assembly 2 includes a motor 21, a rotating rod 22, a crushing roller 23 and a second slider 24. One end of the rotating rod 22 is rotatably connected to the mounting plate 31 through a bearing. The box body 1 is provided with a through hole 14. The other end of the rotating rod 22 passes through the through hole 14 and extends into the box body 1. The crushing roller 23 is located in the box body 1. The motor 21 drives the crushing roller 23 to rotate through the rotating rod 22. The inner wall of the box body 1 is provided with a second slide groove 15. The second slider 24 is limitedly slidably connected to the second slide groove 15. The other end of the rotating rod 22 is rotatably connected to the second slider 24 through a bearing.

[0047] During use, the movable mounting plate 31 drives the rotating rod 22 to move, and the rotating rod 22 drives the crushing rollers 23 to move until the spacing between the crushing rollers 23 reaches the target value; the second slider 24 and the second slide 15 are used in conjunction with each other to support, guide and limit the rotating rod 22; the motor 21 is turned on to drive the rotating rod 22 to rotate, and the rotating rod 22 drives the crushing rollers 23 to rotate, and multiple crushing rollers 23 are used in conjunction to crush the coal, and the crushed coal is discharged from the discharge pipe 12 and sent to the boiler for combustion.

[0048] like Figure 1 As shown, in this embodiment, two baffles 16 are provided in the box body 1, and the crushing roller 23 is located between the two baffles 16. Two cylinders 17 are provided on the box body 1, and the cylinders 17 drive the baffles 16 to move.

[0049] During use, after moving the position of the rolling roller, the cylinder 17 is turned on to drive the baffle plate 16 to move to a suitable position, so that the baffle plate 16 does not affect the normal rotation of the crushing roller 23, and can prevent the coal from falling directly from the left and right sides of the crushing roller 23 without being crushed.

[0050] like Figure 2 As shown, in this embodiment, a material blocking brush 18 is provided in the through hole 14; the material blocking brush 18 can prevent the coal material and dust in the box body 1 from escaping from the through hole 14, effectively protecting the environment and the health of the staff, and the material blocking brush 18 will not affect the normal movement of the rotating rod 22.

[0051] like Figure 1 As shown, in this embodiment, a screening plate 7 is obliquely arranged below the crushing assembly 2, and a discharge pipe 19 is connected to the side of the box body 1; the crushed coal falls onto the screening plate 7, and the coal with the required particle size passes through the screening plate 7, is discharged from the discharge pipe 12 and sent to the boiler for combustion, while the coal with too large particle size slides along the screening plate 7, is discharged from the discharge pipe 19 and waits to be crushed again; the present application arranges the screening plate 7 to make the particle size of the coal added to the boiler uniform, ensure the full combustion of the coal, and improve the combustion efficiency of the boiler.

[0052] like Figure 1 As shown, in this embodiment, a support leg 110 is provided at the lower end of the box body 1; the support leg 110 supports and protects the box body 1.

[0053] Working principle: When the coal blending and burning device provided by the present application is in use, the coal is added into the box body 1 from the feed hopper 11, the motor 21 is turned on to drive the rotating rod 22 to rotate, the rotating rod 22 drives the crushing roller 23 to rotate, and multiple crushing rollers 23 are used together to crush the coal, and the crushing condition of the coal and whether blockage occurs are observed, and then the connecting rod 41 is pushed to drive the locking plate 42 away from the fixed plate 44. At this time, the elastic member 43 is stretched, and then the mounting plate 31 is moved to drive the rotating rod 22 to move, and the rotating rod 22 drives the crushing roller 23 to move until the distance between the crushing rollers 23 reaches the target value, and then the connecting rod 41 is released. Under the elastic force of the elastic member 43, the connecting rod 41 drives the locking plate 42 to move away from the fixed plate 44. The tightening plate 42 is pressed against the fixing plate 44, so that the mounting plate 31 can be locked and fixed on the box body 1. Then, the screw 51 is turned. Under the thread cooperation of the screw 51 and the mounting plate 31, the screw 51 moves and drives the first magnetic block 52 to move to be magnetically connected with the second magnetic block 53, so that the mounting plate 31 can be tightened and fixed. After moving the position of the rolling roller, the cylinder 17 is turned on to drive the baffle plate 16 to move to the appropriate position. The crushed coal falls onto the screening plate 7. After the coal with the required particle size passes through the screening plate 7, it is discharged from the discharge pipe 12 and sent to the boiler for combustion. The coal with too large particle size slides along the screening plate 7, is discharged from the discharge pipe 19 and waits to be crushed again.

[0054] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A coal blending and combustion device for a thermal power plant, characterized by: The invention comprises a box body (1), wherein the top of the box body (1) is connected to a feed hopper (11), the bottom of the box body (1) is connected to a discharge pipe (12), a plurality of crushing assemblies (2) are arranged inside the box body (1), and a plurality of mounting assemblies (3) are arranged outside the box body (1), the crushing assemblies (2) are connected to the mounting assemblies (3), and the mounting assemblies (3) can move left and right along the box body (1).

2. The coal blending and combustion device for a thermal power plant according to claim 1, characterized in that: The mounting assembly (3) comprises a mounting plate (31) and a first slider (32), the first slider (32) being fixedly mounted on the mounting plate (31), the outer wall of the box body (1) being provided with a first slide groove (13), the first slider (32) being connected to the first slide groove (13) in a position-limiting sliding manner, the crushing assembly (2) being connected to the mounting plate (31), and a locking assembly (4) being provided between the mounting plate (31) and the box body (1).

3. The coal blending and combustion device for a thermal power plant according to claim 2, characterized in that: The locking assembly (4) comprises a connecting rod (41), a locking plate (42), an elastic member (43) and a fixing plate (44); the connecting rod (41) passes through the mounting plate (31); the locking plate (42) is fixedly connected to one end of the connecting rod (41); the elastic member (43) is pre-pressed between the mounting plate (31) and the locking plate (42); the fixing plate (44) is fixedly arranged on the box body (1); and the fixing plate (44) is located between the mounting plate (31) and the locking plate (42); the locking plate (42) can abut against the fixing plate (44).

4. The coal blending and combustion device for a thermal power plant according to claim 3, characterized in that: A reinforcement component (5) is provided between the mounting plate (31) and the box body (1), and the reinforcement component (5) includes a screw (51), a first magnetic block (52) and a second magnetic block (53). The mounting plate (31) is provided with a receiving groove (33), the screw (51) threadedly passes through the mounting plate (31) and extends into the receiving groove (33), the first magnetic block (52) is located in the receiving groove (33), and the first magnetic block (52) is fixedly connected to one end of the screw (51), the second magnetic block (53) is fixedly provided on the outer wall of the box body (1), and the second magnetic block (53) passes through the receiving groove (33), and the first magnetic block (52) and the second magnetic block (53) are magnetically connected.

5. The coal blending and combustion device for a thermal power plant according to claim 4, characterized in that: Handles (6) are respectively provided on the mounting plate (31), the other end of the connecting rod (41), and the other end of the screw rod (51).

6. The coal blending and combustion device for a thermal power plant according to claim 2, characterized in that: The crushing assembly (2) includes a motor (21), a rotating rod (22), a crushing roller (23) and a second slider (24), one end of the rotating rod (22) is rotatably connected to the mounting plate (31) through a bearing, the housing (1) is provided with a through hole (14), the other end of the rotating rod (22) passes through the through hole (14) and extends into the housing (1), the crushing roller (23) is located in the housing (1), the motor (21) drives the crushing roller (23) to rotate through the rotating rod (22), the inner wall of the housing (1) is provided with a second slide groove (15), the second slider (24) is limitedly slidably connected to the second slide groove (15), and the other end of the rotating rod (22) is rotatably connected to the second slider (24) through a bearing.

7. The coal blending and combustion device for a thermal power plant according to claim 6, characterized in that: Two baffle plates (16) are provided in the box body (1), the crushing roller (23) is located between the two baffle plates (16), and two cylinders (17) are provided on the box body (1), and the cylinders (17) drive the baffle plates (16) to move.

8. The coal blending and combustion device for a thermal power plant according to claim 6, characterized in that: A material blocking brush (18) is provided in the through hole (14).

9. The coal blending and combustion device for a thermal power plant according to claim 1, characterized in that: A screening plate (7) is obliquely provided below the pulverizing assembly (2), and a discharge pipe (19) is provided in communication with the side of the box body (1).

10. The coal blending and combustion device for a thermal power plant according to claim 1, characterized in that: The lower end of the box body (1) is provided with a supporting leg (110).

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