Air inlet pipeline structure suitable for fire assaying soot blowing furnace

Abstract

The utility model discloses a gas inlet pipeline structure suitable for a fire assaying soot blowing furnace, which comprises a pipeline body, a first end of the pipeline body is provided with an inlet, a second end of the pipeline body is provided with an outlet, and fixed partition plates and movable partition plates are arranged on the upper side wall and the lower side wall between the inlet and the outlet in the pipeline body in a staggered manner. A zigzag passage is formed between the fixed partition plates and the movable partition plates which are arranged in a staggered manner; an inner cavity is formed in the fixed partition plate and connected with the waste gas end of the soot blowing furnace. The movable partition plate can move relative to the fixed partition plate to adjust the width of the passage; according to the utility model, the waste heat of the waste gas of the soot blowing furnace can be recycled, the gas in the zigzag pipeline is fully preheated, the gas is ensured to reach a preset temperature before entering the soot blowing furnace, and the energy consumption for preheating the gas can be reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of air intake for ash blowing furnaces, specifically relating to an air intake pipeline structure suitable for fire assay ash blowing furnaces. Background Technology

[0002] Fire assay ash blowing is a crucial step in the fire assay process. It utilizes the oxidation reaction between lead and oxygen in the air at high temperatures to remove lead and obtain gold and silver granules. This process requires precise control of parameters such as temperature, time, and airflow to ensure effective extraction and separation of gold and silver. In current ash blowing processes, the furnace temperature is generally kept constant at 950℃. The stability of the furnace temperature directly impacts the quality and efficiency of the ash blowing process.

[0003] In actual ash blowing operations, when external gas is introduced into the furnace, the temperature difference between the external gas and the furnace interior causes temperature fluctuations inside the furnace. To ensure sufficient air intake without affecting the furnace temperature, the fresh air needs to be fully preheated before entering the furnace. Current technology involves installing a preheating pipe at the furnace inlet, using heating elements within the pipe to preheat the external gas. However, the existing preheating pipe has a short preheating stroke, resulting in insufficient preheating of the external gas. Furthermore, additional heating elements are required inside the pipe, increasing preheating energy consumption.

[0004] Therefore, in view of the above-mentioned problems existing in the preheating pipeline of the ash blowing furnace, this utility model discloses an air inlet pipeline structure suitable for the ash blowing furnace of fire metal testing. Utility Model Content

[0005] This utility model discloses an air inlet pipe structure suitable for fire-testing ash blowing furnace, which can reuse the waste heat of the ash blowing furnace exhaust gas, fully preheat the gas in the tortuous pipe, ensure that the gas reaches the preset temperature before entering the ash blowing furnace, and reduce the energy consumption of preheating gas.

[0006] This utility model is achieved through the following technical solution:

[0007] An air inlet pipe structure suitable for a fire-testing gold ash blowing furnace includes a pipe body, an inlet at a first end of the pipe body, and an outlet at a second end of the pipe body. Fixed and movable baffles are alternately arranged on the upper and lower side walls of the pipe body between the inlet and outlet, forming a tortuous passage. An inner cavity is provided inside each fixed baffle, which is connected to the exhaust gas end of the ash blowing furnace. The movable baffle is movable relative to the fixed baffle to adjust the width of the passage.

[0008] Before entering the ash blowing furnace, the gas first enters the internal passage of the pipeline body through the inlet, while a portion of the waste gas at the furnace outlet is recovered into the inner cavity of the fixed baffle. As the gas passes through the tortuous passage, the heat from the waste gas in the inner cavity is transferred to the gas through the fixed baffle, preheating the gas to a predetermined temperature and preventing it from entering the ash blowing furnace at a low temperature. Simultaneously, by moving the movable baffle relative to the fixed baffle, the width of a portion of the passage can be adjusted, ensuring that the gas flows within the passage at a predetermined flow rate and velocity range. This ensures sufficient heat exchange between the gas and the waste gas in the inner cavity of the fixed baffle, maximizing the preheating of the waste gas and further increasing the heating rate to the predetermined temperature.

[0009] To better realize this utility model, further, a plurality of fixed partitions are provided at intervals on the lower inner side of the pipeline body, and a movable mold is movably provided on the upper inner side of the pipeline body. The movable mold is provided with a movable partition extending to the space between adjacent fixed partitions on the side near the fixed partitions.

[0010] To better realize this utility model, the top of the pipeline body is provided with a sliding groove, the top of the moving mold is provided with a slider that is slidably connected to the sliding groove, and the top of the slider is provided with a driving component.

[0011] To better realize this utility model, the driving component further includes a driving cylinder, and a heat insulation ring is sleeved on the outside of the rod of the driving cylinder.

[0012] To better realize this utility model, the outer side of the inner cavity is further provided with heat transfer fins extending into the passage.

[0013] To better realize this utility model, the inner cavity is further U-shaped or spiral-shaped.

[0014] To better realize this utility model, the thickness of the fixed partition is greater than or equal to 40mm, and the thickness of the movable partition is greater than or equal to 25mm.

[0015] To better realize this utility model, an electrically controlled valve is further provided at the outlet of the pipeline body, and a temperature sensor is provided inside the passage.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] (1) This utility model creates a tortuous passage by interlacing moving baffles and fixed baffles in the pipeline body, which effectively extends the gas preheating path and ensures that the gas can be fully preheated to the predetermined temperature. At the same time, this utility model sets an inner cavity inside the fixed baffle and introduces the exhaust gas of the ash blowing furnace into the inner cavity, fully recovering and utilizing the heat in the exhaust gas to preheat the gas in the passage, thereby reducing the energy consumption of gas preheating.

[0018] (2) By setting heat transfer fins between the fixed partition and the passage, the present invention can quickly transfer the heat in the exhaust gas to the inside of the passage, effectively improving the preheating efficiency of the gas.

[0019] (3) The present invention drives the moving partition to move relative to the fixed partition by the driving component, thereby adjusting the width of the passage area between the fixed partition and the moving partition, thereby adjusting the flow rate and velocity of the gas, ensuring that the gas passes through the passage at a suitable flow rate and velocity, so that the gas can be fully preheated. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the intake pipe structure;

[0021] Figure 2 This is a schematic diagram of the moving partition and the fixed partition;

[0022] Figure 3 A schematic diagram showing the movement of the movable partition away from the fixed partition;

[0023] Figure 4 This is a schematic diagram showing the installation and assembly of the slide and the slider.

[0024] Wherein: 1-pipe body; 2-fixed baffle; 3-moving baffle; 4-inner cavity; 5-moving mold; 6-driving component; 7-heat transfer fins; 100-slide groove; 200-slider. Detailed Implementation

[0025] Example 1:

[0026] This embodiment provides an air inlet pipe structure suitable for a fire-testing gold ash blowing furnace, such as... Figures 1-3 As shown, the system includes a pipeline body 1, with an inlet at one end and an outlet at the other end. Fixed baffles 2 and movable baffles 3 are alternately arranged on the upper and lower side walls between the inlet and outlet of the pipeline body 1, forming a tortuous passage. An inner cavity 4 is provided inside the fixed baffle 2, which is connected to the exhaust gas end of the ash blowing furnace. The movable baffle 3 can move relative to the fixed baffle 2 to adjust the width of the passage.

[0027] The inlet of the pipeline body 1 is connected to the gas source, and the outlet of the pipeline body 1 is connected to the air inlet of the ash blowing furnace. Simultaneously, the inner cavity 4 of the fixed baffle 2 is connected to the exhaust gas end of the ash blowing furnace. The gas source inputs gas into the pipeline body 1, causing the gas to flow in a tortuous passage formed between the fixed baffle 2 and the movable baffle 3. This ensures sufficient heat exchange between the gas and the exhaust gas in the inner cavity of the fixed baffle 2, thereby preheating the gas to a predetermined temperature range before it enters the ash blowing furnace. Simultaneously, the movable baffle 3 can move relative to the fixed baffle 2, thereby adjusting the width of a portion of the passage. By adjusting the width of the passage, the gas flow rate and velocity can be controlled to a certain extent, ensuring that the gas passes through the passage at a suitable flow rate and velocity. This ensures sufficient heat exchange time between the gas and the exhaust gas, allowing the gas to be preheated to at least 900°C before entering the ash blowing furnace.

[0028] Example 2:

[0029] This embodiment discloses an air inlet pipe structure suitable for a fire-testing gold ash blowing furnace, such as... Figure 2 and Figure 3 As shown, based on Embodiment 1, further optimization is made. The lower inner side of the pipeline body 1 is provided with several fixed partitions 2 at intervals, and the upper inner side of the pipeline body 1 is movably provided with a moving mold 5. The moving mold 5 is provided with a moving partition 3 extending to the adjacent fixed partitions 2 on the side near the fixed partitions 2.

[0030] The moving mold 5 drives the moving partition 3 to move closer to or away from the fixed partition 2. When the moving partition 3 moves closer to the fixed partition 2, the width of the passage area decreases. When the moving partition 3 moves away from the fixed partition 2, the width of the passage area increases.

[0031] The other parts of this embodiment are the same as those in Embodiment 1, so they will not be described again.

[0032] Example 3:

[0033] This embodiment discloses an air inlet pipe structure suitable for a fire-testing gold ash blowing furnace, which is further optimized based on the above embodiment 1 or 2, such as... Figure 4 As shown, the top of the pipeline body 1 is provided with a sliding groove 100, the top of the moving mold 5 is provided with a slider 200 that is slidably connected to the sliding groove 100, and the top of the slider 200 is provided with a driving component 6.

[0034] Furthermore, the driving component includes a driving cylinder, and a heat insulation ring is sleeved on the outside of the rod of the driving cylinder.

[0035] The end of the cylinder rod is fixedly connected to one side of the slider 200. The extension and retraction of the cylinder rod causes the slider 200 to slide along the slide groove 100 away from or towards the fixed partition plate 2, thereby causing the moving mold 5 and the moving partition plate 3 on the moving mold 5 to move away from or towards the fixed partition plate 2. In addition, a ceramic heat insulation ring is fitted on the outside of the cylinder rod to insulate some of the heat and prevent cylinder failure caused by high temperature.

[0036] The other parts of this embodiment are the same as those in Embodiment 1 or 2 above, so they will not be described again.

[0037] Example 4:

[0038] This embodiment discloses an air inlet pipe structure suitable for a fire-testing gold ash blowing furnace, which is further optimized based on any one of the above embodiments 1-3, such as... Figure 2 and Figure 3 As shown, the outer surface of the inner cavity 4 is provided with heat transfer fins 7 extending into the passage. The heat transfer fins 7 are made of a material with high thermal conductivity. Through the heat transfer fins 7, the heat of the exhaust gas in the inner cavity 4 can be quickly transferred to the interior of the passage, ensuring that the gas inside the passage can be quickly preheated to the predetermined temperature range. By setting the heat transfer fins 7, not only can the heat transfer efficiency be improved, but the heat exchange area of ​​the gas inside the passage can also be increased.

[0039] Furthermore, the inner cavity 4 is U-shaped or spiral-shaped, thereby extending the heat exchange path of the exhaust gas and making full use of the residual heat in the exhaust gas.

[0040] The other parts of this embodiment are the same as any one of the embodiments 1-3 above, so they will not be described again.

[0041] Example 5:

[0042] This embodiment discloses an air inlet pipe structure suitable for a fire-testing gold ash blowing furnace, which is further optimized based on any one of the above embodiments 1-4. The thickness of the fixed partition 2 is greater than or equal to 40 mm, and the thickness of the movable partition 3 is greater than or equal to 25 mm. Preferably, the thickness of the fixed partition 2 is 45 mm, and the thickness of the movable partition 3 is 25 mm.

[0043] Furthermore, an electrically controlled valve is installed at the outlet of the pipeline body 1, and a temperature sensor is installed inside the passage. The temperature sensor monitors the gas temperature inside the pipeline body 1 in real time. When the gas temperature reaches a predetermined temperature range, the temperature sensor sends a signal to an external controller, which then controls the electrically controlled valve to open, allowing the gas inside the pipeline body 1 to enter the ash blowing furnace.

[0044] The other parts of this embodiment are the same as any one of the embodiments 1-4 above, so they will not be described again.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An air inlet pipe structure suitable for a fire-testing gold ash blowing furnace, characterized in that, The system includes a pipeline body (1), with an inlet at the first end and an outlet at the second end. Fixed baffles (2) and movable baffles (3) are alternately arranged on the upper and lower side walls between the inlet and outlet of the pipeline body (1), forming a tortuous passage between the alternately arranged fixed baffles (2) and movable baffles (3). An inner cavity (4) is provided inside the fixed baffle (2), which is connected to the exhaust gas end of the ash blowing furnace. The movable baffle (3) can move relative to the fixed baffle (2) to adjust the width of the passage.

2. The air inlet pipe structure suitable for a fire-testing gold ash blowing furnace according to claim 1, characterized in that, The lower inner side of the pipeline body (1) is provided with several fixed partitions (2) at intervals, and the upper inner side of the pipeline body (1) is provided with a movable mold (5). The side of the movable mold (5) near the fixed partitions (2) is provided with a movable partition (3) extending to the space between the adjacent fixed partitions (2).

3. The air inlet pipe structure suitable for a fire-testing gold ash blowing furnace according to claim 2, characterized in that, The top of the pipeline body (1) is provided with a slide groove (100), the top of the moving mold (5) is provided with a slider (200) that is slidably connected to the slide groove (100), and the top of the slider (200) is provided with a driving component (6).

4. The air inlet pipe structure suitable for a fire-testing gold ash blowing furnace according to claim 3, characterized in that, The driving component includes a driving cylinder, and a heat insulation ring is sleeved on the outside of the rod of the driving cylinder.

5. The air inlet pipe structure suitable for a fire-testing gold ash blowing furnace according to any one of claims 1-4, characterized in that, The outer side of the inner cavity (4) is provided with heat transfer fins (7) extending into the passage.

6. The air inlet pipe structure suitable for a fire-testing gold ash blowing furnace according to claim 5, characterized in that, The inner cavity (4) is U-shaped or spiral-shaped.

7. The air inlet pipe structure suitable for a fire-testing gold ash blowing furnace according to any one of claims 1-4, characterized in that, The thickness of the fixed partition (2) is greater than or equal to 40 mm, and the thickness of the movable partition (3) is greater than or equal to 25 mm.

8. The air inlet pipe structure suitable for a fire-testing gold ash blowing furnace according to any one of claims 1-4, characterized in that, An electrically controlled valve is installed at the outlet of the pipeline body (1), and a temperature sensor is installed inside the passage.

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