Primary air oxygen supply device for rotary kiln

Abstract

The utility model relates to the technical field of rotary kiln oxygen supply, and discloses a device for primary air oxygen supply of a rotary kiln, which comprises a balance tank, two fixed pipes fixedly connected to the surface of the balance tank, a ball valve and a safety valve respectively arranged on the surface of the balance tank, and an oxygen tank arranged at one end of the ball valve far away from the balance tank. A primary air conveying pipeline is arranged at the end, away from the balance tank, of the safety valve, a connecting mechanism is arranged between the balance tank and the primary air conveying pipeline and between the balance tank and the oxygen tank, a pressure stabilizing plate vertically slides in the balance tank, a pressure stabilizing column is sleeved with the balance tank, the pressure stabilizing plate is arranged at the bottom of the pressure stabilizing column, and a sliding mechanism for sliding the pressure stabilizing plate is arranged in the balance tank. According to the oxygen supply conveying device, oxygen can be conveyed more stably when the oxygen supply conveying device is used due to the arrangement of the balance tank, meanwhile, the safety of the oxygen in the using process can be ensured due to the arrangement of the safety valve, and meanwhile, the oxygen supply conveying device can be connected with different types of oxygen supply tanks only through steel wire hoses, so that the convenience of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln oxygen supply, in particular to a device for primary air oxygen supply of a rotary kiln. Background Art

[0002] Oxygen-enriched combustion is a combustion process conducted under conditions where the oxygen concentration is higher than that of conventional air, which is approximately 21%. This combustion method can improve fuel combustion efficiency and reduce pollutant emissions. In an oxygen-rich environment, the fuel can burn more completely, thereby releasing more energy. Due to the more complete combustion, oxygen-enriched combustion can significantly reduce the emission of carbon monoxide, unburned hydrocarbons, and other harmful substances. Oxygen-enriched combustion can also increase the furnace temperature, thereby reducing heat loss and improving thermal efficiency. Due to the increased combustion efficiency, fuel usage can generally be reduced. Oxygen-enriched combustion has applications in various fields, including thermal power plants, industrial furnaces, internal combustion engines, and incinerators.

[0003] Although oxygen-enriched combustion has many advantages, the flow control of oxygen cannot be fully guaranteed in actual applications, resulting in the inability to ensure that the coal powder can be fully burned during actual use, thereby reducing the combustion efficiency. At the same time, more flue gas will be generated, which will cause more pollution to the environment. In addition, the oxygen pressure cannot be kept more stable during supply, which will affect the safety of use. Therefore, the above problems need to be solved urgently. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a device for supplying oxygen to the primary air of a rotary kiln.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The balancing tank is provided with a plurality of fixed pipes, a ball valve and a safety valve are provided on the surface of the balancing tank respectively, an oxygen tank is provided at one end of the ball valve away from the balancing tank, and a primary air delivery pipe is provided at one end of the safety valve away from the balancing tank, a connecting mechanism is provided between the balancing tank, the primary air delivery pipe and the oxygen tank, a pressure stabilizing plate is vertically slidable inside the balancing tank, a pressure stabilizing column is sleeved inside the balancing tank, the pressure stabilizing plate is arranged at the bottom of the pressure stabilizing column, and a sliding mechanism for sliding the pressure stabilizing plate is provided inside the balancing tank. Through the setting of the balancing tank, the oxygen delivery provided during use can be more stable. At the same time, in conjunction with the setting of the safety valve, the safety of oxygen use can be ensured and unsafe behavior can be reduced. At the same time, the oxygen supply and delivery device only needs to be connected with a steel wire hose to deliver oxygen for different types of oxygen supply tanks, thereby improving the convenience of the device.

[0007] As a further solution of the present invention, the connecting mechanism includes a connecting pipe, and there are multiple connecting pipes. A flange is provided between the ball valve and the oxygen tank. The ball valve, flange and oxygen tank are installed at both ends of the multiple connecting pipes. A pressure gauge is installed between the ball valve and the flange. The primary air delivery pipe and the balancing tank are connected to each other through the connecting pipe. A ball valve is installed between the primary air delivery pipe and the balancing tank. A safety valve is provided between the ball valve and the balancing tank. A flange is provided between the ball valve and the primary air delivery pipe. A pressure gauge is provided between the ball valve and the flange. A ball valve is provided at one end away from the balancing tank and the safety valve. The ball valve is respectively connected to the safety valve and the balancing tank through the connecting pipe for delivering oxygen. At the same time, the use of oxygen can be controlled by the ball valve, which is convenient for checking problems arising during use.

[0008] As a further solution of the present invention, the sliding mechanism includes a matching block, four first sliding blocks are fixedly connected to the surface of the pressure-stabilizing column, four first limiting grooves are vertically opened on the inner wall of the balancing tank, and the four first sliding blocks slide respectively inside the four first limiting grooves, and a connecting column is fixedly connected to the center of the top of the pressure-stabilizing column, and the matching block is fixedly connected to the center of the top of the connecting column. A connecting box is fixedly connected to the top of the balancing tank, and a plurality of connecting ports are provided on the arc surface of the connecting box. A servo motor is installed at the center of the top of the connecting box, and a screw rod is rotatably connected to the center of the inside of the balancing tank, and the top of the screw rod is fixedly connected to the output end of the servo motor. The screw rod is sleeved on Inside the connecting column and the matching block, the screw rod cooperates with the matching block, a pressure sensor is installed at the top center of the pressure stabilizing column, a base plate is installed at the bottom of the pressure sensor, and multiple springs are fixedly connected to the bottom of the base plate. A plurality of second limiting grooves are vertically opened on the inner wall of the pressure stabilizing column, and a telescopic column is fixedly connected at the top center of the pressure stabilizing plate. The telescopic column slides vertically inside the pressure stabilizing column, and four second sliders are fixedly connected to the surface of the telescopic column. The four second sliders slide respectively in the four second limiting grooves, and the bottom ends of the four springs are fixedly connected to the top of the telescopic column, which is used to control the pressure of the oxygen inside the pipeline, so that the pressure inside the pipeline is more stable.

[0009] Preferably, the ball valve selected is a 50 ball valve which can control oxygen usage and facilitate the inspection of problems that arise during use.

[0010] Preferably, the flange can be conveniently fixed in position during installation to ensure complete sealing, and the design is more reasonable.

[0011] Preferably, the safety valve can ensure safety during use. If unsafe behavior occurs, the safety valve will automatically close and stop the liquid oxygen delivery.

[0012] Preferably, the pressure gauge can be used to observe the delivery pressure, which facilitates the adjustment of the delivery flow rate of oxygen.

[0013] Preferably, two pipelines, one main and one backup, are provided between the two ball valves, so as to facilitate stopping the use of oxygen in case of pipeline failure during use, thereby increasing the fault tolerance mechanism.

[0014] Preferably, the steel wire hose is suitable for different specifications of oxygen supply tanks, is convenient for moving the oxygen supply tanks, has a reasonable design, and is easy to use.

[0015] The beneficial effects of the utility model are:

[0016] 1. When in use, the oxygen will pass through the pressure gauge and there will be a pressure display. The oxygen flow can be adjusted by controlling the ball valve and finally enter the primary air delivery pipeline to ensure the full combustion of pulverized coal, improve the combustion concentration and flame intensity, improve the combustion performance of inferior fuels and alternative fuels, improve production efficiency, and reduce the amount of flue gas after combustion.

[0017] 2. When oxygen passes through the balance tank, it will drive the pressure stabilizing plate inside the balance tank to slide up and down. Combined with the pressure sensor, the servo motor can be controlled to drive the screw to rotate. With the cooperation of the matching block, the connecting column and the pressure stabilizing column will slide up and down. Combined with the setting of the pressure stabilizing plate, the pressure balance control inside the balance tank will be more stable, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a flow chart of a device for supplying primary air and oxygen to a rotary kiln proposed in the present invention;

[0019] Figure 2 This is a schematic diagram of the surface structure of a balance tank of a device for supplying primary air to a rotary kiln proposed in the utility model;

[0020] Figure 3 This is a cross-sectional view of the internal structure of a balance tank of a device for supplying primary air to a rotary kiln proposed in the utility model;

[0021] Figure 4 The utility model provides a cross-sectional view of the internal structure of a pressure stabilizing column of a device for supplying primary air to a rotary kiln.

[0022] In the figure: 1. connecting pipe; 2. ball valve; 3. flange; 4. safety valve; 5. pressure gauge; 6. steel hose; 7. primary air delivery pipe; 8. oxygen tank; 9. balance tank; 91. fixing pipe; 92. connecting box; 93. connecting port; 94. first limit groove; 10. pressure stabilizing column; 101. first slider; 102. connecting column; 103. matching block; 104. servo motor; 105. screw rod; 106. second limit groove; 107. pressure sensor; 108. bottom plate; 109. spring; 11. pressure stabilizing plate; 1101. telescopic column; 1102. second slider. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-Figure 4 , a device for supplying primary air oxygen to a rotary kiln, comprising a balancing tank 9, the surface of which is fixedly connected with two fixed pipes 91, and the surfaces of the balancing tank 9 are respectively provided with a ball valve 2 and a safety valve 4, the ball valve 2 is provided with an oxygen tank 8 at one end away from the balancing tank 9, and the safety valve 4 is provided with a primary air delivery pipe 7 at one end away from the balancing tank 9, and a connecting mechanism is provided between the balancing tank 9 and the primary air delivery pipe 7 and the oxygen tank 8. A pressure stabilizing plate 11 is vertically slidably provided inside the balancing tank 9, and a pressure stabilizing column 10 is sleeved inside the balancing tank 9, and the pressure stabilizing plate 11 is arranged at the bottom of the pressure stabilizing column 10, and a sliding mechanism for sliding the pressure stabilizing plate 11 is provided inside the balancing tank 9. Through the arrangement of the balancing tank 9, the oxygen delivery provided during use is more stable, and at the same time, the arrangement of the safety valve 4 in combination with 2 can ensure the safety of oxygen use and reduce unsafe behavior. At the same time, the oxygen supply and delivery device only needs to be connected to a steel wire hose for different types of oxygen supply tanks to deliver oxygen, thereby improving the convenience of the device.

[0025] Reference Figure 1In a preferred embodiment, the connecting mechanism includes a connecting pipe 1, which is provided with multiple connecting pipes 1, a flange 3 is provided between the ball valve 2 and the oxygen tank 8, and the ball valve 2, the flange 3 and the oxygen tank 8 are installed at both ends of the multiple connecting pipes 1, a pressure gauge 5 is installed between the ball valve 2 and the flange 3, the primary air delivery pipe 7 and the balancing tank 9 are interconnected through the connecting pipe 1, a ball valve 2 is installed between the primary air delivery pipe 7 and the balancing tank 9, a safety valve 4 is provided between the ball valve 2 and the balancing tank 9, a flange 3 is provided between the ball valve 2 and the primary air delivery pipe 7, a pressure gauge 5 is provided between the ball valve 2 and the flange 3, and the balancing tank 9 and the safety valve 4 are provided with a ball valve 2 at one end away from each other. The ball valve 2 is respectively connected to the safety valve 4 and the balancing tank 9 through the connecting pipe 1 for delivering oxygen. At the same time, the use of oxygen can be controlled by the ball valve 2, which is convenient for checking problems that occur during use.

[0026] Reference Figure 2-Figure 4 In a preferred embodiment, the sliding mechanism includes a matching block 103, four first sliders 101 are fixedly connected to the surface of the pressure stabilizing column 10, four first limiting grooves 94 are vertically opened on the inner wall of the balancing tank 9, and the four first sliders 101 slide in the four first limiting grooves 94 respectively, and the top center of the pressure stabilizing column 10 is fixedly connected to the connecting column 102, and the matching block 103 is fixedly connected to the top center of the connecting column 102. The top of the balancing tank 9 is fixedly connected to the connecting box 92, and a plurality of connecting ports 93 are provided on the arc surface of the connecting box 92. A servo motor 104 is installed at the top center of the connecting box 92. A screw rod 105 is rotatably connected to the center of the inner center of the balancing tank 9, and the top of the screw rod 105 is fixedly connected to the output end of the servo motor 104. The screw rod 105 is sleeved on the connecting column 102 and the matching block 103. Inside the coupling block 103, the screw rod 105 cooperates with the matching block 103, and a pressure sensor 107 is installed at the top center of the pressure stabilizing column 10, and a base plate 108 is installed at the bottom of the pressure sensor 107. A plurality of springs 109 are fixedly connected to the bottom of the base plate 108. A plurality of second limiting grooves 106 are vertically opened on the inner wall of the pressure stabilizing column 10, and a telescopic column 1101 is fixedly connected at the top center of the pressure stabilizing plate 11. The telescopic column 1101 slides vertically inside the pressure stabilizing column 10, and four second sliders 1102 are fixedly connected to the surface of the telescopic column 1101. The four second sliders 1102 slide respectively in the four second limiting grooves 106. The bottom ends of the four springs 109 are fixedly connected to the top of the telescopic column 1101, which is used to control the pressure of the oxygen inside the pipeline, so that the pressure inside the pipeline is more stable.

[0027] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: when in use, oxygen comes out of the oxygen tank 8, passes through the steel wire hose 6 and enters the safety valve 4. The spare pipeline is in a closed state during use. The oxygen will have a pressure display when it passes through the pressure gauge 5. The oxygen flow can be adjusted by controlling the ball valve 2 and finally enters the primary air delivery pipeline 7, ensuring that the coal powder is fully burned, improving the combustion concentration and flame intensity, improving the combustion performance of inferior fuels and alternative fuels, improving production efficiency, and reducing the amount of smoke after combustion. At the same time, when the oxygen passes through the inside of the balance tank 9, when the oxygen pressure is not stable enough, it will drive the balance tank 9 to burn. The pressure stabilizing plate 11 at the top slides up and down, and at the same time, the multiple springs 109 inside the pressure stabilizing column 10 are compressed, thereby shrinking the pressure inside the balancing tank 9, thereby reducing the pressure difference inside the balancing tank 9. At the same time, a pressure sensor 107 is provided inside the pressure stabilizing column 10, which can transmit the pressure value to the server. During use, the value read by the server drives the servo motor 104 to drive the screw rod 105 to rotate. With the cooperation of the matching block 103, the connecting column 102 and the pressure stabilizing column 10 will slide up and down, and with the setting of the pressure stabilizing plate 11, the pressure balance control inside the balancing tank 9 will be more stable, thereby improving the safety of the device.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for supplying primary air oxygen to a rotary kiln, comprising a balance tank (9), characterized in that: Two fixed pipes (91) are fixedly connected to the surface of the balancing tank (9), and a ball valve (2) and a safety valve (4) are respectively provided on the surface of the balancing tank (9). An oxygen tank (8) is provided at one end of the ball valve (2) away from the balancing tank (9), and a primary air delivery pipe (7) is provided at one end of the safety valve (4) away from the balancing tank (9). A connecting mechanism is provided between the balancing tank (9), the primary air delivery pipe (7) and the oxygen tank (8). A pressure stabilizing plate (11) slides vertically inside the balancing tank (9), a pressure stabilizing column (10) is sleeved inside the balancing tank (9), and the pressure stabilizing plate (11) is provided at the bottom of the pressure stabilizing column (10). A sliding mechanism for sliding the pressure stabilizing plate (11) is provided inside the balancing tank (9).

2. The device for supplying primary air to a rotary kiln according to claim 1, characterized in that: The connecting mechanism comprises a connecting pipe (1), wherein a plurality of connecting pipes (1) are provided, a flange (3) is provided between the ball valve (2) and the oxygen tank (8), the ball valve (2), the flange (3) and the oxygen tank (8) are installed at both ends of the plurality of connecting pipes (1), and a pressure gauge (5) is installed between the ball valve (2) and the flange (3).

3. The device for supplying primary air to a rotary kiln according to claim 2, characterized in that: The primary air delivery pipeline (7) and the balance tank (9) are connected to each other via a connecting pipeline (1); a ball valve (2) is installed between the primary air delivery pipeline (7) and the balance tank (9); a safety valve (4) is provided between the ball valve (2) and the balance tank (9); a flange (3) is provided between the ball valve (2) and the primary air delivery pipeline (7); and a pressure gauge (5) is provided between the ball valve (2) and the flange (3).

4. The device for supplying primary air oxygen to a rotary kiln according to claim 3, characterized in that: A ball valve (2) is provided at one end of the balancing tank (9) and the safety valve (4) away from each other, and the ball valve (2) is connected to the safety valve (4) and the balancing tank (9) respectively through a connecting pipe (1).

5. The device for supplying primary air oxygen to a rotary kiln according to claim 1, characterized in that: The sliding mechanism includes a matching block (103), four first sliders (101) are fixedly connected to the surface of the pressure stabilizing column (10), four first limiting grooves (94) are vertically opened on the inner wall of the balancing tank (9), and the four first sliders (101) slide inside the four first limiting grooves (94) respectively. A connecting column (102) is fixedly connected at the top center of the pressure stabilizing column (10), and the matching block (103) is fixedly connected to the top center of the connecting column (102).

6. The device for supplying primary air oxygen to a rotary kiln according to claim 5, characterized in that: The top of the balancing tank (9) is fixedly connected to a connection box (92), and a plurality of communication ports (93) are provided on the arc surface of the connection box (92). A servo motor (104) is installed at the center of the top of the connection box (92). A screw rod (105) is rotatably connected to the center of the interior of the balancing tank (9), and the top of the screw rod (105) is fixedly connected to the output end of the servo motor (104). The screw rod (105) is sleeved inside the connection column (102) and the matching block (103), and the screw rod (105) matches the matching block (103).

7. The device for supplying primary air oxygen to a rotary kiln according to claim 6, characterized in that: A pressure sensor (107) is installed at the center of the top of the pressure stabilizing column (10), a base plate (108) is installed at the bottom of the pressure sensor (107), a plurality of springs (109) are fixedly connected to the bottom of the base plate (108), a plurality of second limiting grooves (106) are vertically opened on the inner wall of the pressure stabilizing column (10), a telescopic column (1101) is fixedly connected at the center of the top of the pressure stabilizing plate (11), the telescopic column (1101) slides vertically inside the pressure stabilizing column (10), four second sliders (1102) are fixedly connected to the surface of the telescopic column (1101), the four second sliders (1102) slide respectively inside the four second limiting grooves (106), and the bottom ends of the four springs (109) are fixedly connected to the top of the telescopic column (1101).

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