Air adjusting device used in coal injection pipe

Abstract

The utility model provides an air adjusting device used in a coal injection pipe, and relates to the technical field of cement processing, the air adjusting device comprises a coal injection pipe body, a communication main pipe, an inner air conveying pipe fitting, an outer air conveying pipe fitting, a central air conveying pipe fitting and a compressed air tank, the communication main pipe is connected with the coal injection pipe, and a separation ring is arranged in the communication main pipe; the inner air conveying pipe fitting is communicated with the inner ring, the outer air conveying pipe fitting is communicated with the outer ring, the central air conveying pipe fitting is communicated with the central ring, and the compressed air tank is respectively connected with the inner air conveying pipe fitting, the outer air conveying pipe fitting and the central air conveying pipe fitting. The multiple conveying pipe fittings are arranged to supply air to the inner ring, the outer ring and the center ring, air volume adjustment can be conveniently and independently carried out, meanwhile, the compressed air tank is arranged, compressed air can be conveniently added, air pressure adjustment can be achieved, and therefore better air use adjustment in the coal injection pipe is achieved.

Description

Technical Field

[0001] This application relates to the technical field of cement processing, and more particularly, to an air regulation device for use inside a coal injection pipe. Background Art

[0002] The stability of the rotary kiln burner not only directly affects the stability of the kiln calcination conditions and fuel consumption, but also affects the formation of nitrogen oxides and the stability of clinker quality. By adjusting the ratio of the inner air, outer air and central air of the coal injection pipe of the burner, the combustion state of the pulverized coal can be effectively improved, which will be beneficial to the uniform granulation of the clinker, reduce coal consumption and improve the thermal conditions. However, the existing coal injection pipes used in burners do not have the function of flexibly adjusting the inner air, outer air and central air in multiple channels, so they cannot provide sufficient air and air pressure, resulting in poor combustion state of the burner.

[0003] In view of this, this application aims to provide an air regulation device for use inside a coal injection pipe to better solve the above technical problems. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide an air regulation device for use inside a coal injection pipe, which can solve the technical problem of reasonable regulation of the inner air, outer air and central air in the coal injection pipe.

[0005] The embodiments of this application provide an air regulation device for use inside a coal injection pipe, including a coal injection pipe body, a connecting main pipe, an inner air conveying pipe fitting, an outer air conveying pipe fitting, a central air conveying pipe fitting and a compressed air tank. The connecting main pipe is connected to the coal injection pipe body. A partition ring is provided inside the connecting main pipe for dividing the inside of the connecting main pipe into an inner ring, an outer ring and a central ring. The inner air conveying pipe fitting is communicated with the inner ring, the outer air conveying pipe fitting is communicated with the outer ring, the central air conveying pipe fitting is communicated with the central ring, and the compressed air tank is respectively connected to the inner air conveying pipe fitting, the outer air conveying pipe fitting and the central air conveying pipe fitting.

[0006] Further, the connecting main pipe is rotatably connected to the coal injection pipe body through a rotary joint.

[0007] Further, the inner air conveying pipe fitting is provided with a first air supply pipe, a first fan and a first butterfly valve. The first air supply pipe is communicated with the inner ring, the first fan is connected to the first air supply pipe, and the first butterfly valve is installed on the first air supply pipe.

[0008] Further, the outer air conveying pipe fitting is provided with a second air supply pipe, a second fan and a second butterfly valve. The second air supply pipe is communicated with the outer ring, the second fan is connected to the second air supply pipe, and the second butterfly valve is installed on the second air supply pipe.

[0009] Further, the central air delivery pipe fitting is provided with a third air delivery pipe, a third fan, and a third butterfly valve. The third air delivery pipe communicates with the central ring, the third fan is connected to the third air delivery pipe, and the third butterfly valve is installed on the third air delivery pipe.

[0010] Further, an auxiliary fan is further included. The auxiliary fan is respectively communicated with the first air delivery pipe, the second air delivery pipe, and the third air delivery pipe through pipelines, and a on-off control valve is provided on the pipeline.

[0011] Further, the compressed air tank is respectively connected to the inner air delivery pipe fitting, the outer air delivery pipe fitting, and the central air delivery pipe fitting through connecting pipes, and a ball valve is installed on the connecting pipe.

[0012] Advantages of the present utility model:

[0013] The air flow regulating device for use inside a pulverized coal injection pipe provided by the present utility model includes a pulverized coal injection pipe body, a communicating main pipe, an inner air delivery pipe fitting, an outer air delivery pipe fitting, a central air delivery pipe fitting, and a compressed air tank. The communicating main pipe is connected to the pulverized coal injection pipe body. A partition ring is provided inside the communicating main pipe for dividing the inside of the communicating main pipe into an inner ring, an outer ring, and a central ring. The inner air delivery pipe fitting communicates with the inner ring, the outer air delivery pipe fitting communicates with the outer ring, the central air delivery pipe fitting communicates with the central ring, and the compressed air tank is respectively connected to the inner air delivery pipe fitting, the outer air delivery pipe fitting, and the central air delivery pipe fitting. The structure of the present utility model is simple and reasonably designed. By providing multiple delivery pipe fittings to supply air to the inner ring, the outer ring, and the central ring respectively, it is convenient to independently adjust the air volume. At the same time, by providing a compressed air tank, it is convenient to introduce compressed air to adjust the air pressure, thereby achieving better air flow regulation inside the pulverized coal injection pipe. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of some embodiments of the present utility model;

[0016] Figure 2 It is a schematic connection diagram of the auxiliary fan with the first air delivery pipe, the second air delivery pipe, and the third air delivery pipe in some embodiments of the present utility model.

[0017] The reference numerals are respectively:

[0018] The main body of the pulverized coal injection pipe 1, the connecting main pipe 2, the partition ring 21, the inner air conveying pipe fitting 3, the first air supply pipe 31, the first fan 32, the first butterfly valve 33, the outer air conveying pipe fitting 4, the second air supply pipe 41, the second fan 42, the second butterfly valve 43, the central air conveying pipe fitting 5, the third air supply pipe 51, the third fan 52, the third butterfly valve 53, the compressed air tank 6, the connecting pipe 61, the ball valve 62, the rotary joint 7, the auxiliary fan 8, the pipeline 81, the on-off control valve 82. Detailed implementation manners

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some but not all of the embodiments of this application. The components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application that is claimed, but merely represents selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without making creative efforts fall within the scope of protection of this application.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0025] See Figure 1 As shown, the air regulating device for use inside the pulverized coal injection pipe in this embodiment includes a pulverized coal injection pipe body 1, a communicating main pipe 2, an inner air conveying pipe fitting 3, an outer air conveying pipe fitting 4, a central air conveying pipe fitting 5, and a compressed air tank 6. The communicating main pipe 2 is connected to the pulverized coal injection pipe body 1. A partition ring 21 is provided inside the communicating main pipe 2 for dividing the inside of the communicating main pipe 2 into an inner circle, an outer circle, and a central circle. The inner air conveying pipe fitting 3 communicates with the inner circle, the outer air conveying pipe fitting 4 communicates with the outer circle, the central air conveying pipe fitting 5 communicates with the central circle, and the compressed air tank 6 is respectively connected to the inner air conveying pipe fitting 3, the outer air conveying pipe fitting 4, and the central air conveying pipe fitting 5.

[0026] This embodiment has a simple structure and reasonable design. By providing multiple conveying pipe fittings to supply air to the inner circle, the outer circle, and the central circle respectively, it is convenient to independently adjust the air volume. At the same time, by providing the compressed air tank 6, it is convenient to mix in compressed air to adjust the air pressure, thereby achieving better air regulation for use inside the pulverized coal injection pipe.

[0027] In some embodiments, the communicating main pipe 2 is rotatably connected to the pulverized coal injection pipe body 1 through a rotary joint 7.

[0028] In this embodiment, the communicating main pipe 2 and the pulverized coal injection pipe body 1 are connected through the rotary joint 7, which is convenient for adjusting the angle of the pulverized coal injection pipe body 1, so as to adjust the angle of the air body entering the pulverized coal injection pipe body 1 and achieve flexible air supply adjustment.

[0029] In some embodiments, the inner air conveying pipe fitting 3 is provided with a first air supply pipe 31, a first fan 32, and a first butterfly valve 33. The first air supply pipe 31 communicates with the inner circle, the first fan 32 is connected to the first air supply pipe 31, and the first butterfly valve 33 is installed on the first air supply pipe 31.

[0030] Specifically, the outer air conveying pipe fitting 4 is provided with a second air supply pipe 41, a second fan 42, and a second butterfly valve 43. The second air supply pipe 41 communicates with the outer circle, the second fan 42 is connected to the second air supply pipe 41, and the second butterfly valve 43 is installed on the second air supply pipe 41.

[0031] Specifically, the central air delivery pipe fitting 5 is provided with a third air delivery pipe 51, a third fan 52 and a third butterfly valve 53. The third air delivery pipe 51 communicates with the central ring. The third fan 52 is connected to the third air delivery pipe 51. The third butterfly valve 53 is installed on the third air delivery pipe 51.

[0032] In this embodiment, the structural settings of the inner air delivery pipe fitting 3, the outer air delivery pipe fitting 4 and the central air delivery pipe fitting 5 are specifically shown. By providing independent fans for air delivery and independently controlling the air delivery volume through butterfly valves, flexible air volume adjustment can be achieved.

[0033] Based on the above embodiment, as shown in Figure 2 It also includes an auxiliary fan 8. The auxiliary fan 8 is respectively communicated with the first air delivery pipe 31, the second air delivery pipe 41 and the third air delivery pipe 51 through pipelines 81, and a on-off control valve 82 is provided on the pipeline 81.

[0034] In this embodiment, by providing the auxiliary fan 8 and connecting it to the three air delivery pipes respectively, when the fans corresponding to the three air delivery pipes fail, the auxiliary fan 8 can be started for air delivery to avoid the influence of fan failure on normal air delivery use.

[0035] In some embodiments, the compressed air tank 6 is respectively connected to the inner air delivery pipe fitting 3, the outer air delivery pipe fitting 4 and the central air delivery pipe fitting 5 through connecting pipes 61, and a ball valve 62 is installed on the connecting pipe 61.

[0036] In this embodiment, by providing the ball valve 62, the flow rate of the air flowing into the three delivery pipe fittings can be effectively adjusted, so that the adjustment of the air pressure can be further realized.

[0037] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wind regulating device for coal injection pipe, characterized in that: It includes a coal injection pipe body, a connecting main pipe, an inner air conveying pipe fitting, an outer air conveying pipe fitting, a central air conveying pipe fitting and a compressed air tank. The connecting main pipe is connected to the coal injection pipe body. A dividing ring is provided inside the connecting main pipe for dividing the interior of the connecting main pipe into an inner ring, an outer ring and a central ring. The inner air conveying pipe fitting is connected to the inner ring, the outer air conveying pipe fitting is connected to the outer ring, the central air conveying pipe fitting is connected to the central ring, and the compressed air tank is respectively connected to the inner air conveying pipe fitting, the outer air conveying pipe fitting and the central air conveying pipe fitting.

2. The air regulating device for coal injection pipe according to claim 1, characterized in that: The communicating main pipe is rotatably connected to the coal injection pipe body through a rotating joint.

3. The air regulating device for coal injection pipe according to claim 1, characterized in that: The inner air conveying pipe is provided with a first air supply pipe, a first fan and a first butterfly valve. The first air supply pipe is connected to the inner ring, the first fan is connected to the first air supply pipe, and the first butterfly valve is installed on the first air supply pipe.

4. The air regulating device for coal injection pipe according to claim 3, characterized in that: The external air conveying pipe is provided with a second air supply pipe, a second fan and a second butterfly valve, the second air supply pipe is connected to the outer ring, the second fan is connected to the second air supply pipe, and the second butterfly valve is installed on the second air supply pipe.

5. The air regulating device for coal injection pipe according to claim 4, characterized in that: The central air delivery pipe is provided with a third air supply pipe, a third fan and a third butterfly valve. The third air supply pipe is connected to the central circle, the third fan is connected to the third air supply pipe, and the third butterfly valve is installed on the third air supply pipe.

6. The air regulating device for coal injection pipe according to claim 5, characterized in that: It also includes an auxiliary fan, which is connected to the first air supply pipe, the second air supply pipe and the third air supply pipe through pipelines respectively, and an on-off control valve is arranged on the pipeline.

7. The air regulating device for coal injection pipe according to claim 1, characterized in that: The compressed air tank is connected to the inner air conveying pipe, the outer air conveying pipe and the central air conveying pipe through connecting pipes, respectively, and a ball valve is installed on the connecting pipes.

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