Efficient pulverized coal combustion furnace capable of achieving sufficient combustion

Abstract

The utility model relates to an efficient pulverized coal combustion furnace with sufficient combustion, which comprises a pulverized coal storage tank, a main combustor and a boiler body, a transmission pipe is arranged at the bottom of the pulverized coal storage tank, the transmission pipe is communicated with the main combustor, the main combustor is arranged above the boiler body, the combustion end of the main combustor is arranged in the boiler body, and the combustion end of the main combustor is communicated with the boiler body. An auxiliary combustor is installed on the side wall of the boiler body and communicates with the main combustor, and a heat energy conduction pipe is arranged below the boiler body. According to the efficient pulverized coal combustion furnace capable of achieving sufficient combustion, during combustion, combustion is conducted through the main combustor firstly, then the auxiliary combustor is started for secondary combustion, combustion is conducted once at the top of the boiler body and once at the middle position of the boiler body, two-section combustion is achieved, and pulverized coal combustion is more sufficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of pulverized coal combustion furnaces, and in particular relates to a high-efficiency pulverized coal combustion furnace with full combustion. Background Art

[0002] China burns 1.5 billion tons of coal every year, of which 800 million tons are used for coal-fired thermal power generation and 700 million tons are used for coal-fired industrial furnaces. my country's coal-based energy structure will be difficult to change for a long time in the future. With the improvement of air pollutant emission standards for coal-fired furnaces, efficient and clean coal combustion technology is an inevitable requirement for future development. Pulverized coal furnaces increase the combustion rate of coal, are highly efficient and energy-saving, and are easy to start and stop. They are widely used in various fields. Pulverized coal furnaces are boiler equipment that uses pulverized coal as fuel. They have the advantages of rapid and complete combustion, large capacity, high efficiency, wide adaptability to coal types, and easy control and adjustment. The combustion characteristics of pulverized coal furnaces are that the fuel enters the combustion chamber together with the air and burns in a suspended state.

[0003] The existing pulverized coal furnace has the problem of incomplete combustion of pulverized coal. The pulverized coal furnace is fed through the top and then transmitted downward for combustion and heat generation. The actual combustion place is only the top of the pulverized coal furnace, and there is only one combustion point, which easily leads to incomplete combustion. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a high-efficiency pulverized coal combustion furnace with full combustion, wherein the two-stage combustion makes the combustion more complete.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a high-efficiency pulverized coal combustion furnace with full combustion, including a pulverized coal storage tank, a main burner and a boiler body, a transmission pipe is provided at the bottom of the pulverized coal storage tank, the transmission pipe is connected to the main burner, the main burner is installed above the boiler body, the combustion end of the main burner is placed in the boiler body, an auxiliary burner is installed on the side wall of the boiler body, the auxiliary burner is connected to the main burner, and a heat transfer pipe is provided below the boiler body.

[0006] The main burner is provided with a feeder which is in communication with the transmission pipe.

[0007] A cleaning component is installed in the transmission pipe.

[0008] The cleaning assembly includes a mounting seat, a forward and reverse driving motor, a screw, a guide rod, a transmission seat and a cleaning ring. The mounting seat is installed at one end of the transmission tube away from the main burner, the forward and reverse driving motor is installed on the mounting seat, the screw is rotatably installed on the mounting seat and is located in the transmission tube, the guide rod is installed on the mounting seat and is located in the transmission tube, the transmission seat is connected to the screw rod in a transmission manner, the transmission seat is provided with a guide hole matching the guide rod, the inner ring of the cleaning ring is fixedly connected to the outer wall of the transmission seat, and the outer ring of the cleaning ring fits the inside of the transmission tube.

[0009] A cleaning wheel is rotatably mounted on one end of the transmission seat away from the mounting seat.

[0010] The cleaning wheel is provided with a through hole sleeved on the screw rod, and an internal thread and a brush layer connected with the screw rod thread are installed in the through hole. The internal thread is located between the transmission seat and the brush layer, and the brush layer is arranged to fit the thread groove of the screw rod.

[0011] A soft brush is arranged outside the cleaning wheel, and the brush is extended and placed on the guide rod.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses a high-efficiency pulverized coal combustion furnace with full combustion. During combustion, combustion is first performed through a main burner, and then an auxiliary burner is started for a second combustion. The combustion is performed once at the top of a boiler body and once again at the middle of the boiler body, thereby realizing two-stage combustion and making the pulverized coal burn more fully. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the pulverized coal combustion furnace of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the transmission tube of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the cleaning component of the utility model.

[0017] Markings in the figure: 1. Coal powder storage tank; 2. Main burner; 3. Boiler body; 4. Transmission pipe; 5. Auxiliary burner; 6. Heat transfer pipe; 7. Feeder; 8. Mounting seat; 9. Forward and reverse drive motor; 10. Screw; 11. Guide rod; 12. Transmission seat; 13. Cleaning ring; 14. Cleaning wheel; 15. Internal thread; 16. Brush layer; 17. Soft brush. DETAILED DESCRIPTION

[0018] In order to make the above features and advantages of the present invention more obvious and understandable, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0019] like Figure 1-Figure 3 As shown, this embodiment provides a high-efficiency pulverized coal combustion furnace with full combustion, including a pulverized coal storage tank 1, a main burner 2 and a boiler body 3. A transmission pipe 4 is provided at the bottom of the pulverized coal storage tank 1, and the transmission pipe 4 is connected to the main burner 2. The main burner 2 is installed above the boiler body 3, and the combustion end of the main burner 2 is placed in the boiler body 3. An auxiliary burner 5 is installed on the side wall of the boiler body 3, and the auxiliary burner 5 is connected to the main burner 2. A heat transfer pipe 6 is provided below the boiler body 3. Specifically, a feeder 7 connected to the transmission pipe 4 is installed on the main burner 2. When burning, the main burner 2 is used for combustion first, and then the auxiliary burner 5 is started for the second combustion, burning once at the top of the boiler body 3 and once again at the middle of the boiler body 3, so as to realize two-stage combustion and make the pulverized coal burn more fully.

[0020] Further, a cleaning assembly is installed in the transmission tube 4. Specifically, the cleaning assembly includes a mounting seat 8, a forward and reverse driving motor 9, a screw 10, a guide rod 11, a transmission seat 12 and a cleaning ring 13. The mounting seat 8 is installed at one end of the transmission tube 4 away from the main burner 2, the forward and reverse driving motor 9 is installed on the mounting seat 8, the screw 10 is rotatably installed on the mounting seat 8 and is located in the transmission tube 4, the guide rod 11 is installed on the mounting seat 8 and is located in the transmission tube 4, the transmission seat 12 is connected to the screw 10 in a transmission manner, the transmission seat 12 is provided with a guide hole matching the guide rod 11, the inner ring of the cleaning ring 13 is fixedly connected to the outer wall of the transmission seat 12, the outer ring of the cleaning ring 13 fits the inside of the transmission tube 4, and the mounting seat 8 is provided with a controller for controlling the switch of the forward and reverse driving motor 9, and the controller is not marked in the drawings of the specification. After long-term use, coal powder will inevitably adhere to the transmission pipe 4. The forward and reverse drive motor 9 can be driven to drive the screw 10 to rotate, and then the transmission seat 12 drives the cleaning ring 13 along the guide rod 11 to clean the inner wall of the transmission pipe 4.

[0021] Furthermore, a cleaning wheel 14 is rotatably mounted on one end of the transmission seat 12 away from the mounting seat 8. Specifically, the cleaning wheel 14 is provided with a through hole sleeved on the screw rod 10, and an internal thread 15 and a brush layer 16 threadedly connected to the screw rod 10 are installed in the through hole, the internal thread 15 is located between the transmission seat 12 and the brush layer 16, and the brush layer 16 is arranged in contact with the thread groove of the screw rod 10. A soft brush 17 is provided on the outside of the cleaning wheel 14, and the brush extends and is placed on the guide rod 11. During the movement of the transmission seat 12, the cleaning wheel 14 rotates through the cooperation of the internal thread 15 and the screw rod 10, so that the screw rod 10 is cleaned through the brush layer 16, and the guide rod 11 is cleaned through the soft brush 17, so as to prevent the transmission seat 12 from being difficult to move on the guide rod 11 due to too much coal powder.

[0022] The above shows and describes the basic principles and main features of the invention and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the invention, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A high-efficiency pulverized coal combustion furnace with full combustion, characterized in that: It includes a pulverized coal storage tank, a main burner and a boiler body. A transmission pipe is provided at the bottom of the pulverized coal storage tank, and the transmission pipe is connected to the main burner. The main burner is installed above the boiler body, and the combustion end of the main burner is placed in the boiler body. An auxiliary burner is installed on the side wall of the boiler body, and the auxiliary burner is connected to the main burner. A heat transfer pipe is provided below the boiler body.

2. A high-efficiency pulverized coal combustion furnace with full combustion according to claim 1, characterized in that: The main burner is provided with a feeder which is in communication with the transmission pipe.

3. A high-efficiency pulverized coal combustion furnace with full combustion according to claim 1, characterized in that: A cleaning component is installed in the transmission pipe.

4. A high-efficiency pulverized coal combustion furnace with full combustion according to claim 3, characterized in that: The cleaning assembly includes a mounting seat, a forward and reverse driving motor, a screw, a guide rod, a transmission seat and a cleaning ring. The mounting seat is installed at one end of the transmission tube away from the main burner, the forward and reverse driving motor is installed on the mounting seat, the screw is rotatably installed on the mounting seat and is located in the transmission tube, the guide rod is installed on the mounting seat and is located in the transmission tube, the transmission seat is connected to the screw rod in a transmission manner, the transmission seat is provided with a guide hole matching the guide rod, the inner ring of the cleaning ring is fixedly connected to the outer wall of the transmission seat, and the outer ring of the cleaning ring fits the inside of the transmission tube.

5. A high-efficiency pulverized coal combustion furnace with full combustion according to claim 4, characterized in that: A cleaning wheel is rotatably mounted on one end of the transmission seat away from the mounting seat.

6. A high-efficiency pulverized coal combustion furnace with full combustion according to claim 5, characterized in that: The cleaning wheel is provided with a through hole sleeved on the screw rod, and an internal thread and a brush layer connected with the screw rod thread are installed in the through hole. The internal thread is located between the transmission seat and the brush layer, and the brush layer is arranged to fit the thread groove of the screw rod.

7. A high-efficiency pulverized coal combustion furnace with full combustion according to claim 5, characterized in that: A soft brush is arranged outside the cleaning wheel, and the brush is extended and placed on the guide rod.

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