Dense-thin separation pulverized coal burner

Abstract

The invention relates to the technical field of combustors, in particular to a thick-thin separation pulverized coal combustor which comprises a shell, two flow dividing pipes are fixedly connected to the lower end of the shell, a separation plate is rotationally installed on the inner side of the shell and close to the upper portion of a partition plate, and a fixing shaft is arranged on the inner side of the shell and close to the lower portion of one side of the separation plate. Rotating discs are arranged at the front end and the rear end of the fixing shaft respectively, the front rotating disc is fixedly connected with the fixing shaft, the two rotating discs are rotationally embedded in the front surface and the rear surface of the shell respectively, a through opening is formed in the rear surface of the rear rotating disc in a penetrating mode, a plug block is inserted into the inner side of the through opening, and the rear end of the fixing shaft penetrates through the plug block in a sliding mode; the device has the functions of locally guiding and promoting uniform dispersion of pulverized coal, so that the mixing degree of pulverized coal in pulverized coal gas discharged from the lower end of the flow dividing pipe is uniform, and sufficient combustion is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of burners, and in particular to a thick-thin separation pulverized coal burner. Background Art

[0002] The pulverized coal burner is a device that can make the pulverized coal fully burn in a short time and generate high-temperature vortex. It has an axial flow air channel, a swirl air channel, a fuel channel and a central air channel, which work together to achieve full combustion of the pulverized coal.

[0003] The thick and thin separation structure is located in the fuel channel, and the coal powder is separated into thick and thin parts through the guidance of the separation plate. The powder on the side with higher concentration is easily transmitted close to the inner wall of the channel shell due to the guidance. Even though the coal powder discharged from this side has a higher concentration, there is a problem of uneven mixing. The concentration is higher on the side close to the inner wall, which affects the subsequent sufficient combustion. Therefore, a thick and thin separation coal powder burner is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a thick-thin separation pulverized coal burner.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a thick-thin separation pulverized coal burner, comprising an outer shell, two diversion pipes are fixedly connected to the lower end of the outer shell, a separation plate is rotatably installed on the inner side of the outer shell and near the upper part of the partition, a fixed shaft is provided on the inner side of the outer shell and near the lower part of one side of the separation plate, and rotating disks are respectively provided at the front and rear ends of the fixed shaft, the front rotating disk is fixedly connected to the fixed shaft, the two rotating disks are rotatably embedded in the front and rear surfaces of the outer shell, and a through opening is penetrated on the rear surface of the rear rotating disk, a plug is inserted on the inner side of the through opening, the rear end of the fixed shaft slides through the plug, the upper end of the plug is connected to a stop block through an elastic mechanism, and a plurality of guide plates are slidingly sleeved on the outer surface of the fixed shaft, the upper end of the guide plate is fixedly connected to a connecting rod, the upper end of the connecting rod is fixedly connected to an adjusting rod, the rear end of the adjusting rod passes through the inner side of the through opening, and the upper surface of the stop block is in sliding contact with the lower surface of the lowest adjusting rod.

[0006] Preferably, an inlet pipe is fixedly embedded in the upper end surface of the shell.

[0007] Preferably, a partition is fixedly connected to the middle of the upper ends of the two diverter pipes, and the front and rear edges of the partition are fixedly connected to the inner wall of the outer shell respectively.

[0008] Preferably, a rotating shaft is fixedly connected in the middle of the separation plate, and both ends of the rotating shaft rotate through the front and rear surfaces of the outer shell respectively, the front and rear ends of the rotating shaft are respectively fixedly connected to connecting plates, the front surface of the front connecting plate is fixedly connected to a third handle, and the adjacent sides of the two connecting plates are respectively fixedly connected to anti-slip pads, and the anti-slip pads are in contact with the outer surface of the outer shell.

[0009] Preferably, an annular groove is provided on the outer edge of the rotating disk, and the rotating disk is rotatably connected to the outer shell via the annular groove.

[0010] Preferably, a first handle is fixedly connected to the front surface of the rotating disk in front, and a rubber ring is provided on the inner side of the annular groove.

[0011] Preferably, an intermediate cylinder is provided in the middle of the outer surface of the block, an intermediate hole is opened in the middle of the inner side of the through opening, the intermediate cylinder slides into the inner side of the intermediate hole, the rear end of the fixed shaft slides through the inner side of the intermediate cylinder, a sliding sleeve portion is provided in the middle of the outer surface of the guide plate, and the fixed shaft slides through the inner side of the sliding sleeve portion.

[0012] Preferably, a connecting plate is fixedly connected to the lower end of the plug block, a positioning bolt slides through the rear surface of the connecting plate, a threaded hole is opened on the rear surface of the rotating disk, and the positioning bolt is threadedly connected to the inner side of the threaded hole.

[0013] Preferably, an end rod is provided at the upper edge of the outer surface of the guide plate, two guide bars are fixedly connected between the front and rear rotating disks, the end rod slides and snaps into between the two guide bars, a side hole is opened at the inner upper end of the through opening, and a side block is provided at the upper edge of the outer surface of the plug block, and the side block slides and snaps into the inner side of the side hole.

[0014] Preferably, the elastic mechanism comprises a spring plate fixedly connected to the upper side of the blocking block, the upper end of the spring plate is fixedly connected to the lower surface of the blocking block, and a second handle is fixedly connected to the rear end of the outer surface of the adjusting rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the gas mixed with coal powder enters through the inlet pipe, and the coal powder is separated and guided by the separation plate. More coal powder is guided on the side close to the guide plate, so as to achieve the purpose of different concentrations of coal powder when discharged from the diversion pipes on both sides. Due to the existence of the guide plate, the coal powder on this side will be close to one side of the shell and transferred downward after being guided by the separation plate. Through the action of the guide plate, more concentrated coal powder is guided. Since there is a gap between adjacent guide plates, the coal powder will not be blocked and guided, so as to achieve the purpose of local guidance and promoting uniform dispersion, so that the coal powder gas discharged from the lower end of the diversion pipe on this side has a uniform mixing degree of coal powder, which is conducive to full combustion.

[0016] 2. In the present invention, the distance between adjacent guide plates can be changed by moving the adjusting rod forward and backward so that the guide plate can be moved forward and backward, thereby changing the degree of local separation of the coal powder on that side, and flexibly changing the uniformity of the coal powder discharged from the diverter pipe on that side by means of regulation. After unscrewing the positioning bolt, the plug can be taken out of the through port, and then the guide plate can be pulled out or inserted by moving the adjusting rod backward. When moving out, the guide plate passes through the inside of the through port, the end rod passes through the inside of the side hole, and the sliding sleeve passes through the inside of the middle hole, and there will be no obstruction to the removal. Through this design, the number of guide plates can be flexibly changed, and combined with the flexible distance adjustment between adjacent guide plates, the local dispersion effect of the coal powder can be effectively adjusted, and the uniformity of the discharge of the pulverized coal from the diverter pipe port can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a concentrated-lean separation pulverized coal burner according to the present invention; Figure 2 A cross-sectional view of a concentrated-lean separation pulverized coal burner according to the present invention; Figure 3 This is a schematic diagram of a guide plate of a thick-thin separation pulverized coal burner according to the present invention; Figure 4 It is a cross-sectional view of a guide plate of a thick-thin separation pulverized coal burner of the present invention; Figure 5 A thick-thin separation pulverized coal burner according to the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a cross-sectional view of the rear rotating disk of a thick-thin separation pulverized coal burner of the present invention; Figure 7 This is a schematic diagram of a block of a thick-thin separation pulverized coal burner according to the present invention; Figure 8 A schematic diagram of a rotating disk of a concentrated-lean separation pulverized coal burner according to the present invention; Fig. 9 It is a schematic diagram of a separation plate of a dense-lean separation pulverized coal burner according to the present invention.

[0018] 1. Shell; 2. Diverter pipe; 3. Inlet pipe; 4. Rotating disk; 5. First handle; 6. Fixed shaft; 7. Guide plate; 8. Sliding sleeve; 9. Guide strip; 10. End rod; 11. Connecting rod; 12. Adjusting rod; 13. Second handle; 14. Annular groove; 15. Through hole; 16. Middle hole; 17. Side hole; 18. Threaded hole; 19. Block; 20. Connecting plate; 21. Positioning bolt; 22. Side block; 23. Spring plate; 24. Stop block; 25. Middle cylinder; 26. Separation plate; 27. Rotating shaft; 28. Connecting disk; 29. ​​Anti-skid pad; 30. Third handle; 31. Partition. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] like Figure 1-Figure 9 The thick-thin separation pulverized coal burner shown in the figure comprises a shell 1, two shunt pipes 2 are fixedly connected to the lower end of the shell 1, a separation plate 26 is rotatably mounted on the inner side of the shell 1 and close to the upper part of the partition 31, a fixed shaft 6 is arranged on the inner side of the shell 1 and close to the lower part of one side of the separation plate 26, and a rotating disk 4 is arranged at the front and rear ends of the fixed shaft 6 respectively, the front rotating disk 4 is fixedly connected to the fixed shaft 6, and the two rotating disks 4 are rotatably embedded in the front and rear surfaces of the shell 1 respectively, and the rear surface of the rear rotating disk 4 is penetrated A through opening 15 is penetrated, a plug 19 is inserted into the inner side of the through opening 15, the rear end of the fixed shaft 6 slides through the plug 19, the upper end of the plug 19 is connected with a stopper 24 through an elastic mechanism, a plurality of guide plates 7 are slidingly sleeved on the outer surface of the fixed shaft 6, a connecting rod 11 is fixedly connected to the upper end of the guide plate 7, an adjusting rod 12 is fixedly connected to the upper end of the connecting rod 11, the rear end of the adjusting rod 12 passes through the inner side of the through opening 15, the upper surface of the stopper 24 is in sliding contact with the lower surface of the lowest adjusting rod 12.

[0021] The upper end surface of the shell 1 is fixedly embedded with an inlet pipe 3 for connecting the carbon powder gas pumping system. The middle of the upper ends of the two diversion pipes 2 are fixedly connected with a partition 31, and the front and rear edges of the partition 31 are respectively fixedly connected to the inner wall of the shell 1. The partition 31 can further play a role in guiding the separation of thick and thin coal powders.

[0022] like Figure 1 , Fig. 9 As shown, a rotating shaft 27 is fixedly connected to the middle of the separation plate 26, and the two ends of the rotating shaft 27 rotate and penetrate the front and rear surfaces of the housing 1, respectively. The front and rear ends of the rotating shaft 27 are respectively fixedly connected to the connection disks 28, and the front surface of the front connection disk 28 is fixedly connected to the third handle 30, which is convenient for pulling to rotate the connection disk 28 during use. The adjacent sides of the two connection disks 28 are respectively fixedly connected to the anti-skid pads 29, and the anti-skid pads 29 are in contact with the outer surface of the housing 1. The anti-skid pads 29 can increase the friction between the connection disk 28 and the housing 1, so that the separation plate 26 can be positioned after adjusting the rotation angle.

[0023] like Figure 2 , Figure 3As shown, the front surface of the front rotating disk 4 is fixedly connected with a first handle 5, the outer edge of the rotating disk 4 is provided with an annular groove 14, the inner side of the annular groove 14 is provided with a rubber ring, and the rotating disk 4 is rotatably connected with the housing 1 through the annular groove 14. The rubber ring plays a role in increasing friction, so that the rotating disk 4 can hold the document after rotating, and the inclination angle of the guide plate 7 can be flexibly adjusted, so that in the process of local dispersion of coal powder, the coal powder is guided to be dispersed in an appropriate range.

[0024] like Figure 6 , Figure 7 , Figure 8 As shown, an intermediate cylinder 25 is provided in the middle of the outer surface of the plug 19, an intermediate hole 16 is provided in the middle of the inner side of the through hole 15, the intermediate cylinder 25 is slidably inserted into the inner side of the intermediate hole 16, the rear end of the fixed shaft 6 slides through the inner side of the intermediate cylinder 25, a sliding sleeve portion 8 is provided in the middle of the outer surface of the guide plate 7, and the fixed shaft 6 slides through the inner side of the sliding sleeve portion 8. The intermediate cylinder 25 provides sufficient space for the sliding sleeve portion 8 to be removed later.

[0025] The lower end of the plug 19 is fixedly connected with a connecting plate 20, and a positioning bolt 21 is slidably penetrated through the rear surface of the connecting plate 20. The rear surface of the rear rotating disk 4 is provided with a threaded hole 18, and the positioning bolt 21 is threadedly connected to the inner side of the threaded hole 18. By unscrewing the positioning bolt 21, the plug 19 can be removed.

[0026] An end rod 10 is provided at the upper edge of the outer surface of the guide plate 7. Two guide bars 9 are fixedly connected between the front and rear rotating disks 4. The end rod 10 slides and snaps into between the two guide bars 9. A side hole 17 is provided at the upper end of the inner side of the through hole 15. A side block 22 is provided at the upper end of the outer surface of the plug 19. The side block 22 slides and snaps into the inner side of the side hole 17. The side hole 17 provides sufficient space for the end rod 10 to be removed later. like Figure 4 , Figure 5 As shown, the elastic mechanism includes a spring plate 23 fixedly connected to the upper side of the plug 19, the upper end of the spring plate 23 is fixedly connected to the lower surface of the stopper 24, and the rear end of the outer surface of the adjustment rod 12 is fixedly connected to the second handle 13. The second handle 13 is convenient for the user to pull the adjustment rod 12. In addition to playing the role of elastic force, the spring plate 23 can also play a blocking role to prevent the carbon powder inside the housing 1 from flowing out.

[0027] The gas mixed with coal powder enters through the inlet pipe 3, and the coal powder is separated and guided by the separation plate 26. More coal powder is guided on the side close to the guide plate 7, so that the coal powder on both sides of the diversion pipe 2 has different concentrations when discharged. Due to the existence of the guide plate 7, the coal powder on this side will be close to one side of the outer shell 1 and transferred downward after being guided by the separation plate 26. Through the action of the guide plate 7, more concentrated coal powder is guided. Since there is a gap between adjacent guide plates 7, the coal powder will not be blocked and guided, so as to achieve the purpose of local guidance and promote uniform dispersion, so that the coal powder mixing degree in the coal powder gas discharged from the lower end of the diversion pipe 2 on this side is uniform, which is conducive to sufficient combustion.

[0028] By moving the adjusting rod 12 forward and backward to move the guide plate 7 forward and backward, the distance between adjacent guide plates 7 can be changed, thereby changing the degree of local separation of the coal powder on that side, and flexibly changing the uniformity of the coal powder discharged from the shunt pipe 2 on that side by means of regulation. After unscrewing the positioning bolt 21, the plug 19 can be taken out from the through port 15, and then the guide plate 7 can be pulled out or inserted by moving the adjusting rod 12 backward. When moving out, the guide plate 7 passes through the inner side of the through port 15, the end rod 10 passes through the inner side of the side hole 17, and the sliding sleeve 8 passes through the inner side of the middle hole 16, and there will be no obstruction to the removal. Through this design, the number of guide plates 7 can be flexibly changed, and combined with the flexible distance adjustment between adjacent guide plates 7, the local dispersion effect of coal powder can be effectively adjusted, and the uniformity of the discharge of pulverized coal from the port of the shunt pipe 2 can be improved.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A thick-thin separation pulverized coal burner, comprising a housing (1), characterized in that: The lower end of the housing (1) is fixedly connected to two shunt pipes (2), a separation plate (26) is rotatably mounted on the inner side of the housing (1) and close to the upper side of the partition (31), a fixed shaft (6) is provided on the inner side of the housing (1) and close to the lower side of one side of the separation plate (26), and rotating disks (4) are respectively provided at the front and rear ends of the fixed shaft (6), the front rotating disk (4) is fixedly connected to the fixed shaft (6), the two rotating disks (4) are respectively rotatably embedded in the front and rear surfaces of the housing (1), and a through hole (15) is opened through the rear surface of the rear rotating disk (4), and the through hole (15) is provided. A plug (19) is inserted into the inner side of the opening (15), the rear end of the fixed shaft (6) slides through the plug (19), the upper end of the plug (19) is connected to a stopper (24) through an elastic mechanism, the outer surface of the fixed shaft (6) is slidably sleeved with a plurality of guide plates (7), the upper end of the guide plate (7) is fixedly connected to a connecting rod (11), the upper end of the connecting rod (11) is fixedly connected to an adjusting rod (12), the rear end of the adjusting rod (12) passes through the inner side of the opening (15), and the upper surface of the stopper (24) is in sliding contact with the lower surface of the lowest adjusting rod (12).

2. A thick-thin separation pulverized coal burner according to claim 1, characterized in that: An inlet pipe (3) is fixedly embedded on the upper end surface of the housing (1).

3. A thick-thin separation pulverized coal burner according to claim 1, characterized in that: A partition plate (31) is fixedly connected to the middle of the upper ends of the two flow dividing pipes (2), and the front and rear edges of the partition plate (31) are respectively fixedly connected to the inner wall of the outer shell (1).

4. A thick-thin separation pulverized coal burner according to claim 1, characterized in that: A rotating shaft (27) is fixedly connected in the middle of the separation plate (26), and two ends of the rotating shaft (27) rotate to penetrate the front and rear surfaces of the housing (1) respectively. The front and rear ends of the rotating shaft (27) are respectively fixedly connected to connecting plates (28), and the front surface of the front connecting plate (28) is fixedly connected to a third handle (30). The adjacent surfaces of the two connecting plates (28) are respectively fixedly connected to anti-skid pads (29), and the anti-skid pads (29) are in contact with the outer surface of the housing (1).

5. The thick-thin separation pulverized coal burner according to claim 1, characterized in that: An annular groove (14) is provided on the outer edge of the rotating disk (4), and the rotating disk (4) is rotatably connected to the housing (1) via the annular groove (14).

6. A thick-thin separation pulverized coal burner according to claim 5, characterized in that: A first handle (5) is fixedly connected to the front surface of the rotating disk (4) in the front, and a rubber ring is provided on the inner side of the annular groove (14).

7. The thick-thin separation pulverized coal burner according to claim 1, characterized in that: An intermediate cylinder (25) is provided in the middle of the outer surface of the plug (19); an intermediate hole (16) is provided in the middle of the inner side of the through opening (15); the intermediate cylinder (25) is slidably inserted into the inner side of the intermediate hole (16); the rear end of the fixed shaft (6) slides through the inner side of the intermediate cylinder (25); a sliding sleeve portion (8) is provided in the middle of the outer surface of the guide plate (7); the fixed shaft (6) slides through the inner side of the sliding sleeve portion (8).

8. The thick-thin separation pulverized coal burner according to claim 1, characterized in that: A connecting plate (20) is fixedly connected to the lower end of the plug (19), a positioning bolt (21) is slidably penetrated through the rear surface of the connecting plate (20), a threaded hole (18) is opened on the rear surface of the rotating disk (4), and the positioning bolt (21) is threadedly connected to the inner side of the threaded hole (18).

9. The thick-thin separation pulverized coal burner according to claim 1, characterized in that: An end rod (10) is provided at the upper edge of the outer surface of the guide plate (7), two guide bars (9) are fixedly connected between the front and rear rotating disks (4), and the end rod (10) is slidably inserted between the two guide bars (9). A side hole (17) is provided at the upper end of the inner side of the through hole (15), and a side block (22) is provided at the upper edge of the outer surface of the plug (19), and the side block (22) is slidably inserted into the inner side of the side hole (17).

10. The thick-thin separation pulverized coal burner according to claim 1, characterized in that: The elastic mechanism comprises a spring plate (23) fixedly connected to the upper side of the plug (19), the upper end of the spring plate (23) being fixedly connected to the lower surface of the stopper (24), and a second handle (13) being fixedly connected to the rear end of the outer surface of the adjusting rod (12).

Images