Double-pipeline coarse powder separator

Abstract

The utility model relates to a double-pipeline coarse powder separator which comprises a shell and an inner cone arranged in the shell, the bottom of the shell is inclined and is provided with a powder return port, a feeding pipeline is inserted into the bottom of the shell, and the top of the shell is communicated with a discharging pipeline; the top of the inner cone is sleeved with a fixing cylinder, first baffle assemblies are arranged on the outer side of the lower portion of the inner cone and the outer side of the fixing cylinder, and a second baffle assembly is arranged between the inner cone and the fixing cylinder. The first baffle assembly comprises a plurality of first rotating shafts rotationally installed on the outer surface of the corresponding inner cone or the outer surface of the fixing cylinder. The device has the beneficial effects that the angles of the first baffle and the second baffle are adjustable, so that a worker can adjust the angles of the baffles according to coal type characteristics and system requirements, the separation effect is improved and the resistance is reduced by adjusting the angles, and the device can adapt to different coal types.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder separation in power plants, in particular to a double-pipeline coarse powder separator. Background Art

[0002] The coarse powder separator is one of the most important equipment in the pulverized coal preparation system of a power plant.

[0003] Currently, most coarse powder separators used in power plants are biaxial single-channel separators. Due to their limited structural options and poor internal airflow patterns, these separators exhibit excessive resistance and poor separation efficiency, severely impacting the economic efficiency of the pulverizing system. These issues are particularly pronounced, as they are highly dependent on the type of coal used. Furthermore, excessive separator resistance increases the energy consumption of the pulverizing system, including fan and conveying energy consumption. This, in turn, increases the operating costs of the power plant and reduces its economic benefits. Utility Model Content

[0004] The utility model aims to provide a double-pipeline coarse powder separator to solve the above problems existing in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A dual-pipeline coarse powder separator comprises an outer shell and an inner cone disposed within the outer shell. The bottom of the outer shell is inclined and has a powder return port. A feed pipe is plugged into the bottom of the outer shell, and a discharge pipe is connected to the top of the outer shell. A fixed cylinder is sleeved on the top of the inner cone. A first baffle assembly is provided on the outer side of the lower portion of the inner cone and the outer side of the fixed cylinder. A second baffle assembly is provided between the inner cone and the fixed cylinder.

[0007] The first baffle assembly includes a plurality of first rotating shafts rotatably mounted on the outer surface of the inner cone or the outer surface of the fixed cylinder, a first baffle being fixedly mounted on the surface of each of the first rotating shafts, and a first handle being fixedly mounted on the other end of each of the first rotating shafts passing through the outer shell.

[0008] The second baffle assembly includes several second rotating shafts rotatably mounted on the surface of the inner cone, and second baffles are fixedly mounted on the surfaces of several second rotating shafts. The other ends of several second rotating shafts pass through the fixed cylinder and the outer shell in sequence and are fixedly mounted with second handles.

[0009] The beneficial effects of the present invention are as follows: the air flow carrying coal powder enters the interior of the outer shell from the feed pipe, and due to the enlargement of the space, large particles of coal powder are separated from the air flow under the action of gravity, thereby realizing the first gravity separation, so that qualified coal powder moves upward with the air flow, and the angle of the first baffle is increased and adjusted, and the coal powder hits the surface of the first baffle, and the unqualified large particles of coal powder fall from the air, thereby performing impact separation. After the coal powder air flow has undergone the first impact separation, the air flow can flow from the channel between the fixed cylinder and the outer shell or the channel between the fixed cylinder and the inner cone, and by adjusting the angles and positions of the corresponding first baffle and the second baffle in the two channels, the flow of materials in the area between the inner cone and the fixed cylinder can be changed. The moving path and speed affect the separation effect of coarse powder. Different material properties and separation requirements require different baffle configurations to achieve the best separation effect, so that coal powder can flow unimpeded from the outer and inner channels, thereby improving the separation efficiency. An efficient separation process means that more coal powder can meet the qualified standards in one treatment, thereby reducing the need for subsequent treatment or reprocessing, thereby reducing energy consumption. At the same time, by setting the angle between the first baffle and the second baffle to be adjustable, the staff can adjust the angle of the baffle according to the characteristics of the coal type and system requirements. By adjusting the angle, the separation effect is improved and the resistance is reduced, thereby improving the applicability of the device and making the device adaptable to different types of coal.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, a first support rod with the other end connected to the inner cone surface is fixedly installed on the inner wall of the fixed cylinder, and a plurality of second support rods with the other end fixedly connected to the inner wall of the shell are fixedly installed on the outer surface of the fixed cylinder.

[0012] Furthermore, a flaring cone is fixedly mounted on one end of the feed pipe located inside the shell.

[0013] Furthermore, a conical cap is fixedly mounted on the lower surface of the inner cone.

[0014] Furthermore, fire extinguishing pipes are connected to the top of the shell and on both sides of the discharge pipe.

[0015] Furthermore, the first baffle and the second baffle are both made of high-carbon alloy steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the internal structure of the shell of the utility model;

[0017] Figure 2 This is the front view of the utility model;

[0018] Figure 3This is a schematic structural diagram of the first baffle assembly of the present utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Outer shell; 2. Inner cone; 3. Feed pipe; 4. Fixed cylinder; 5. First support rod; 6. First baffle assembly; 61. First rotating shaft; 62. First baffle; 63. First handle; 7. Second baffle assembly; 71. Second rotating shaft; 72. Second baffle; 73. Second handle; 8. Second support rod; 9. Expanding cone; 10. Conical cap; 11. Fire extinguishing pipe; 12. Discharge pipe; 13. Powder return port. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] like Figures 1 to 3 As shown, embodiment 1 of the present invention is a dual-pipe coarse powder separator, comprising an outer shell 1 and an inner cone 2 arranged inside the outer shell 1. The bottom of the outer shell 1 is inclined and has a powder return port 13. The bottom of the outer shell 1 is plugged with a feed pipe 3, and the top of the outer shell 1 is connected to a discharge pipe 12. The top of the inner cone 2 is sleeved with a fixed cylinder 4. The outer side of the lower part of the inner cone 2 and the outer side of the fixed cylinder 4 are both provided with a first baffle assembly 6. A second baffle assembly 7 is provided between the inner cone 2 and the fixed cylinder 4.

[0023] The first baffle assembly 6 includes a plurality of first rotating shafts 61 rotatably mounted on the outer surface of the corresponding inner cone 2 or the outer surface of the fixed cylinder 4. A first baffle 62 is fixedly mounted on the surface of each of the first rotating shafts 61. The other ends of each of the first rotating shafts 61 pass through the outer shell 1 and are fixedly mounted with a first handle 63.

[0024] The second baffle assembly 7 includes several second rotating shafts 71 rotatably mounted on the surface of the inner cone 2, and second baffles 72 are fixedly mounted on the surfaces of several second rotating shafts 71. The other ends of several second rotating shafts 71 pass through the fixed cylinder 4 and the outer shell 1 in sequence and are fixedly mounted with second handles 73.

[0025] The air flow carrying coal powder enters the interior of the outer shell 1 from the feed pipe 3. As the space becomes larger, large particles of coal powder are separated from the air flow under the action of gravity, realizing the first gravity separation, so that qualified coal powder moves upward with the air flow, and the angle of the first baffle 62 is increased and adjusted. The coal powder hits the surface of the first baffle 62, and the unqualified large particles of coal powder fall from the air, thereby performing impact separation. After the coal powder air flow has passed the first impact separation, the air flow can flow from the channel between the fixed cylinder 4 and the outer shell 1 or the channel between the fixed cylinder 4 and the inner cone 2. By adjusting the angles and positions of the corresponding first baffle 62 and the second baffle 72 in the two channels, the flow of materials in the area between the inner cone 2 and the fixed cylinder 4 is changed. The moving path and speed affect the separation effect of coarse powder. Different material properties and separation requirements require different baffle configurations to achieve the best separation effect, so that coal powder can flow unimpeded from the outer and inner channels, thereby improving the separation efficiency. An efficient separation process means that more coal powder can meet the qualified standards in one treatment, thereby reducing the need for subsequent treatment or reprocessing, thereby reducing energy consumption. At the same time, by setting the angle of the first baffle 62 and the second baffle 72 to be adjustable, the staff can adjust the angle of the baffle according to the characteristics of the coal type and system requirements. By adjusting the angle, the separation effect is improved and the resistance is reduced, thereby improving the applicability of the device and making the device adaptable to different types of coal.

[0026] Example 2 of the present utility model is a double-pipe coarse powder separator. Based on Example 1, a first support rod 5 is fixedly installed on the inner wall of the fixed cylinder 4, and the other end of the first support rod 5 is connected to the surface of the inner cone 2. The outer surface of the fixed cylinder 4 is fixedly installed with several second support rods 8, the other end of the second support rod 8 is fixedly connected to the inner wall of the outer shell 1.

[0027] By providing the first support rod 5 and the second support rod 8 , the inner cone 2 and the fixing cylinder 4 can be stably mounted inside the outer shell 1 .

[0028] Example 3 of the present invention is a double-pipeline coarse powder separator. Based on Example 1 or 2, a flaring cone 9 is fixedly installed at one end of the feed pipe 3 located inside the shell 1.

[0029] By designing the expanded cone 9, the diffusion of the airflow is reduced and a guiding effect is played at the same time, so that the coal-containing airflow is more concentrated, the wind resistance is reduced, and the separation efficiency of the device is improved.

[0030] Example 4 of the present invention is a double-pipe coarse powder separator. Based on any one of Examples 1 to 3, a conical cap 10 is fixedly installed on the lower surface of the inner cone 2.

[0031] Traditional coarse powder separators typically have three layers of impact caps installed at the bottom of the inner cone 2. However, after the coal airflow passes through these three layers, gravity separation is excessive, causing some qualified coal particles to impact and fall into the return pipe, resulting in a high circulation rate. Replacing the impact caps with conical caps 10 significantly reduces the gravity separation ratio of the coal airflow, lowers the drag coefficient of the coal airflow in the feed pipe 3, and improves separation efficiency.

[0032] Embodiment 5 of the present invention is a dual-pipeline coarse powder separator. Based on any one of embodiments 1 to 4, a fire extinguishing pipe 11 is connected to the top of the shell 1 and located on both sides of the discharge pipe 12.

[0033] By designing the fire extinguishing pipe 11, the safety performance of the device is improved.

[0034] Example 6 of the present invention is a dual-pipe coarse powder separator. Based on any one of Examples 1 to 5, the first baffle 62 and the second baffle 72 are both made of high-carbon alloy steel.

[0035] In a specific implementation, the high carbon alloy steel used in the first baffle 62 and the second baffle 72 is NM500 steel plate, which improves the structural strength of the first baffle 62 and the second baffle 72 themselves, thereby increasing the service life of the baffles.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-pipeline coarse powder separator, characterized in that: The invention comprises an outer shell (1) and an inner cone (2) arranged inside the outer shell (1); the bottom of the outer shell (1) is inclined and has a powder return port (13); the bottom of the outer shell (1) is plugged with a feed pipe (3); the top of the outer shell (1) is connected to a discharge pipe (12); the top of the inner cone (2) is sleeved with a fixed cylinder (4); the outer side of the lower part of the inner cone (2) and the outer side of the fixed cylinder (4) are both provided with a first baffle assembly (6); and a second baffle assembly (7) is provided between the inner cone (2) and the fixed cylinder (4); The first baffle assembly (6) comprises a plurality of first rotating shafts (61) rotatably mounted on the outer surface of the corresponding inner cone (2) or the outer surface of the fixed cylinder (4), a first baffle (62) being fixedly mounted on the surface of the plurality of first rotating shafts (61), and the other ends of the plurality of first rotating shafts (61) passing through the outer shell (1) and being fixedly mounted with a first handle (63); The second baffle assembly (7) comprises a plurality of second rotating shafts (71) rotatably mounted on the surface of the inner cone (2), a second baffle (72) being fixedly mounted on the surface of the plurality of second rotating shafts (71), and the other ends of the plurality of second rotating shafts (71) successively passing through the fixed cylinder (4) and the outer shell (1) and being fixedly mounted with a second handle (73).

2. A dual-pipeline coarse powder separator according to claim 1, characterized in that: A first support rod (5) whose other end is connected to the surface of the inner cone (2) is fixedly mounted on the inner wall of the fixed cylinder (4), and a plurality of second support rods (8) whose other ends are fixedly connected to the inner wall of the outer shell (1) are fixedly mounted on the outer surface of the fixed cylinder (4).

3. The double-pipe coarse powder separator according to claim 1, characterized in that: An expansion cone (9) is fixedly mounted on one end of the feed pipe (3) located inside the housing (1).

4. The double-pipe coarse powder separator according to claim 1, characterized in that: A conical cap (10) is fixedly mounted on the lower surface of the inner cone (2).

5. The double-pipeline coarse powder separator according to claim 1, characterized in that: Fire extinguishing pipes (11) are connected to the top of the shell (1) and on both sides of the discharge pipe (12).

6. The double-pipeline coarse powder separator according to claim 1, characterized in that: The first baffle (62) and the second baffle (72) are both made of high-carbon alloy steel.

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