Pulverized coal burner nozzle valve capable of rapidly adjusting temperature

Abstract

The utility model discloses a pulverized coal burner nozzle valve capable of rapidly adjusting temperature, which comprises a shell, a control mechanism used for controlling the amount of a mixture of sprayed air and pulverized coal is arranged in the shell, and the control mechanism comprises a fixed plate, a first rotating shaft, a second rotating shaft, a first rotating plate and a second rotating plate, a fixing plate is fixedly arranged in the middle of the inner side of the shell, a first rotating shaft is movably arranged at the position, at the upper end of the fixing plate, in the shell through a bearing, a second rotating shaft is movably arranged at the position, at the lower end of the fixing plate, in the shell through a bearing, and a first rotating plate is fixedly arranged on the surface of the outer side of the first rotating shaft. And a second rotating plate is fixedly arranged on the outer side surface of the second rotating shaft. The device is good in using effect, the amount of sprayed air and pulverized coal mixture can be rapidly changed, temperature control can be conveniently carried out, meanwhile, the concentration degree of sprayed flames can be controlled, and temperature control can be further conveniently carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverized coal burners, in particular to a nozzle valve for a pulverized coal burner capable of rapid temperature adjustment. Background Art

[0002] A pulverized coal burner is a device that allows pulverized coal to burn fully and quickly, generating high-temperature vortexes. Through a specially designed multi-stage, multi-nozzle air supply and guidance structure, the burner generates high-temperature vortexes within a short period of time, achieving efficient combustion. Pulverized coal burners can be divided into various types based on their intended use, including those for rotary kilns, boilers, and asphalt mixing plants.

[0003] The nozzle is a key component in a pulverized coal burner, responsible for fully mixing the pulverized coal with the air. Through the special design of the nozzle, the pulverized coal is atomized into fine particles and effectively mixed with the air inside or near the nozzle to form a combustible gas mixture.

[0004] However, the pulverized coal burner nozzle in the prior art, such as the pulverized coal burner nozzle with application number 202223557011.9 that can quickly adjust the temperature, has a simple structure and cannot control the injection amount. After the flame is ejected, it can only be sprayed forward, the injection width is fixed, and the injection concentration cannot be controlled, which makes it inconvenient to control the temperature inside the heating equipment. Therefore, to address this problem, there is a need for an improved pulverized coal burner nozzle valve that can quickly adjust the temperature. Utility Model Content

[0005] The purpose of the utility model is to provide a pulverized coal burner nozzle valve capable of rapid temperature adjustment, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pulverized coal burner nozzle valve with rapid temperature adjustment, comprising a shell, a control mechanism for controlling the amount of ejected air and pulverized coal mixture provided inside the shell, the control mechanism comprising a fixed plate, a first rotating shaft, a second rotating shaft, a first rotating plate, and a second rotating plate, a fixed plate fixedly provided in the middle of the inner side of the shell, a first rotating shaft movably provided at the upper end of the fixed plate inside the shell through a bearing, a second rotating shaft movably provided at the lower end of the fixed plate inside the shell, a first rotating plate fixedly provided on the outer surface of the first rotating shaft, a second rotating plate fixedly provided on the outer surface of the second rotating shaft, and an injection mechanism for controlling the injection range provided on one side of the shell surface.

[0007] Preferably, the injection mechanism includes an extension tube and an elastic limiting plate. The extension tube is fixedly provided on one side of the shell surface, and a plurality of elastic limiting plates are evenly fixedly provided on the surface of the extension tube away from the shell. The device can form a nozzle mechanism through the elastic limiting plate, and the elastic limiting plate can be squeezed, collected or opened, so as to control the concentration of the flame ejected from the entire device, thereby further facilitating temperature control.

[0008] Preferably, elastic connecting pieces are fixedly provided between the elastic limiting plates, and the elastic connecting pieces can play a role of filling the gaps between the elastic connecting pieces.

[0009] Preferably, an extrusion ring is movably sleeved on the outer surface of the elastic limiting plate, an extension rod is fixedly provided on the upper end of the extrusion ring, and an electric push rod is fixedly provided on the upper end of the shell. The movable end of the electric push rod is fixedly connected to the extension rod, and the extension rod can drive the extrusion ring to move back and forth through the contraction and matching of the electric push rod. When the extrusion ring moves in the direction close to the shell, it can squeeze multiple elastic limiting plates to tighten each other, thereby increasing the concentration of the ejected flame. Conversely, when the extrusion ring moves in the direction away from the shell, the shell no longer squeezes the elastic limiting plate. At this time, the elastic limiting plate can be opened and reset under the action of its own elasticity, thereby reducing the concentration of the ejected flame. At the same time, the device can enable the electric push rod to be installed in a stable and suitable position through the extension rod to prevent the electric push rod from being installed near the fixed plate, where the temperature of the ejected flame is higher and damages the electric push rod.

[0010] Preferably, an electric motor is fixedly provided on one side of the shell surface, and the output shaft end of the electric motor is connected to the first rotating shaft through a coupling. The electric motor can drive the first rotating shaft to rotate, thereby driving the first rotating plate to rotate to change the opening of the shell flow channel.

[0011] Preferably, one end of each of the first rotating shaft and the second rotating shaft is fixedly provided with a connecting piece, and a transmission rod is movably provided on the outer surface of the connecting piece through a pin shaft. The transmission rod can drive the rotating shaft to rotate at the same time as the first rotating shaft rotates, so that the first rotating plate and the second rotating plate can be driven to rotate at the same time under the action of the motor to control the opening of the entire shell flow channel, thereby changing the amount of the sprayed air-coal powder mixture, thereby facilitating temperature control.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The first and second rotating plates in the housing of the present invention can function as control valves, thereby controlling the opening of the entire housing flow channel, thereby varying the amount of air-coal mixture ejected, and thus facilitating temperature control. When adjusting the angles of the first and second rotating plates, the first rotating shaft is directly driven to rotate by the motor, while the second rotating shaft is simultaneously driven to rotate by the drive rod and the connecting member, thereby varying the angle between the first and second rotating plates and, therefore, the flow channel opening.

[0014] 2. The utility model can drive the extrusion ring to move back and forth through the contraction of the electric push rod and the extension rod. When the extrusion ring moves toward the shell, it can squeeze multiple elastic limit plates to tighten each other, thereby improving the concentration of the ejected flame. Conversely, when the extrusion ring moves away from the shell, the shell no longer squeezes the elastic limit plates. At this time, the elastic limit plates can open and reset under the action of their own elasticity, thereby reducing the concentration of the ejected flame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a nozzle valve for a pulverized coal burner capable of rapid temperature adjustment according to the present invention;

[0016] Figure 2 This is a side view of a nozzle valve of a pulverized coal burner capable of rapid temperature adjustment according to the present invention;

[0017] Figure 3 This is a front view of a pulverized coal burner nozzle valve that can quickly adjust the temperature.

[0018] Figure 4 The utility model is a view of the installation of an elastic connecting plate in a nozzle valve of a pulverized coal burner capable of rapid temperature adjustment.

[0019] In the figure: 1. Shell; 2. Fixed plate; 3. First rotating shaft; 4. Second rotating shaft; 5. First rotating plate; 6. Second rotating plate; 7. Extension tube; 8. Elastic limit plate; 9. Elastic connecting piece; 10. Extrusion ring; 11. Extension rod; 12. Electric push rod; 13. Motor; 14. Connector; 15. Transmission rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4The utility model provides a technical solution: a pulverized coal burner nozzle valve with rapid temperature adjustment, comprising a shell 1, wherein a control mechanism for controlling the amount of ejected air and pulverized coal mixture is arranged inside the shell 1, and the control mechanism comprises a fixed plate 2, a first rotating shaft 3, a second rotating shaft 4, a first rotating plate 5, and a second rotating plate 6. The fixed plate 2 is fixedly arranged in the middle part of the inner side of the shell 1, and the first rotating shaft 3 is movably arranged at the upper end of the fixed plate 2 inside the shell 1 through a bearing, and the second rotating shaft 4 is movably arranged at the lower end of the fixed plate 2 inside the shell 1 through a bearing, a first rotating plate 5 is fixedly arranged on the outer surface of the first rotating shaft 3, and a second rotating plate 6 is fixedly arranged on the outer surface of the second rotating shaft 4, and an injection mechanism for controlling the injection range is provided on one side of the surface of the shell 1.

[0022] The injection mechanism includes an extension tube 7 and an elastic limiting plate 8. The extension tube 7 is fixedly provided on one side of the surface of the shell 1. A plurality of elastic limiting plates 8 are evenly fixedly provided on the surface of the extension tube 7 away from the shell 1. The elastic limiting plates 8 can form a nozzle mechanism through the elastic limiting plates 8. The elastic limiting plates 8 can be squeezed, collected or opened, thereby controlling the concentration of the flame ejected from the entire device, thereby further facilitating temperature control.

[0023] An elastic connecting piece 9 is fixedly provided between the elastic limiting plates 8, and the elastic connecting piece 9 can fill the gap between the elastic connecting pieces 9;

[0024] The outer surface of the elastic limiting plate 8 is movably sleeved with an extrusion ring 10, and the upper end of the extrusion ring 10 is fixedly provided with an extension rod 11, and the upper end of the shell 1 is fixedly provided with an electric push rod 12. The movable end of the electric push rod 12 is fixedly connected to the extension rod 11, and the extension rod 11 can drive the extrusion ring 10 to move back and forth through the contraction of the electric push rod 12. When the extrusion ring 10 moves in the direction close to the shell 1, it can squeeze multiple elastic limiting plates 8 to tighten each other, thereby increasing the concentration of the ejected flame. On the contrary, when the extrusion ring 10 moves in the direction away from the shell 1, the shell 1 no longer squeezes the elastic limiting plate 8. At this time, the elastic limiting plate 8 can be opened and reset under the action of its own elasticity, thereby reducing the concentration of the ejected flame; at the same time, the device can make the electric push rod 12 be installed in a stable and appropriate position through the extension rod 11 to prevent the electric push rod 12 from being installed near the fixed plate 2, where the ejected flame temperature is high and damages the electric push rod 12;

[0025] An electric motor 13 is fixedly mounted on one side of the housing 1. The output shaft of the electric motor 13 is connected to the first rotating shaft 3 via a coupling. The electric motor 13 drives the first rotating shaft 3 to rotate, thereby driving the first rotating plate 5 to rotate, thereby changing the opening of the flow channel of the housing 1.

[0026] One end of each of the first rotating shaft 3 and the second rotating shaft 4 is fixedly provided with a connecting piece 14, and a transmission rod 15 is movably provided on the outer surface of the connecting piece 14 through a pin. The transmission rod 15 can drive the rotating shaft to rotate at the same time as the first rotating shaft 3 rotates, so that the first rotating plate 5 and the second rotating plate 6 can be driven to rotate at the same time under the action of the motor 13 to control the opening of the flow channel of the entire shell 1, thereby changing the amount of the sprayed air-coal powder mixture, thereby facilitating temperature control.

[0027] Working Principle: When using this device, the first rotating plate 5 and the second rotating plate 6 in the housing 1 of the device can act as control valves, thereby controlling the opening of the flow channel of the entire housing 1, thereby changing the amount of air-coal mixture sprayed out, and thus facilitating temperature control. When adjusting the angle of the first rotating plate 5 and the second rotating plate 6, the first rotating shaft 3 is directly driven to rotate by the motor 13, and at this time, the second rotating shaft 4 can be driven to rotate under the action of the transmission rod 15 and the connecting member 14, thereby changing the angle between the first rotating plate 5 and the second rotating plate 6, thereby changing the flow channel opening.

[0028] When the device is in use, the contraction of the electric push rod 12 and the matching extension rod 11 can drive the extrusion ring 10 to move back and forth. When the extrusion ring 10 moves in the direction close to the shell 1, the multiple elastic limit plates 8 can be squeezed to tighten each other, thereby improving the concentration of the ejected flame. On the contrary, when the extrusion ring 10 moves in the direction away from the shell 1, the shell 1 no longer squeezes the elastic limit plates 8. At this time, the elastic limit plates 8 can be opened and reset under the action of their own elasticity, thereby reducing the concentration of the ejected flame. At the same time, the device can install the electric push rod 12 in a stable and suitable position through the extension rod 11 to prevent the electric push rod 12 from being installed near the fixed plate 2, where the ejected flame temperature is high and damages the electric push rod 12.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulverized coal burner nozzle valve capable of rapid temperature adjustment, comprising a housing (1), characterized in that: A control mechanism for controlling the amount of the mixture of air and pulverized coal ejected is provided inside the shell (1), and the control mechanism comprises a fixed plate (2), a first rotating shaft (3), a second rotating shaft (4), a first rotating plate (5), and a second rotating plate (6). The fixed plate (2) is fixedly provided at the middle portion of the inner side of the shell (1), the first rotating shaft (3) is movably provided at the upper end of the fixed plate (2) inside the shell (1), and the second rotating shaft (4) is movably provided at the lower end of the fixed plate (2) inside the shell (1), the first rotating plate (5) is fixedly provided on the outer surface of the first rotating shaft (3), and the second rotating plate (6) is fixedly provided on the outer surface of the second rotating shaft (4). An injection mechanism for controlling the injection range is provided on one side of the surface of the shell (1).

2. A pulverized coal burner nozzle valve capable of rapid temperature adjustment according to claim 1, characterized in that: The injection mechanism comprises an extension tube (7) and an elastic limiting plate (8); the extension tube (7) is fixedly provided on one side of the surface of the shell (1); and a plurality of elastic limiting plates (8) are evenly fixedly provided on the surface of the extension tube (7) away from the shell (1).

3. A pulverized coal burner nozzle valve capable of rapid temperature adjustment according to claim 2, characterized in that: Elastic connecting pieces (9) are fixedly arranged between the elastic limiting plates (8).

4. The pulverized coal burner nozzle valve capable of rapid temperature adjustment according to claim 2, characterized in that: An extrusion ring (10) is movably sleeved on the outer surface of the elastic limiting plate (8), an extension rod (11) is fixedly provided on the upper end of the extrusion ring (10), an electric push rod (12) is fixedly provided on the upper end of the housing (1), and a movable end of the electric push rod (12) is fixedly connected to the extension rod (11).

5. The pulverized coal burner nozzle valve capable of rapid temperature adjustment according to claim 1, characterized in that: An electric motor (13) is fixedly provided on one side of the surface of the housing (1), and an output shaft end of the electric motor (13) is transmission-connected to the first rotating shaft (3) via a coupling.

6. The pulverized coal burner nozzle valve capable of rapid temperature adjustment according to claim 1, characterized in that: A connecting piece (14) is fixedly provided at one end of each of the first rotating shaft (3) and the second rotating shaft (4), and a transmission rod (15) is movably provided on the outer surface of the connecting piece (14) via a pin.

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