Special exhaust hood for fire assaying high-temperature furnace

Abstract

The utility model provides a special exhaust hood for a fire assaying high-temperature furnace. According to the device, a main cover body, a flow guide cover connected with the main cover body and an air outlet connected with the top end of the flow guide cover are arranged on a high-temperature furnace body, and the main cover body covers the whole high-temperature furnace body; in the melting or soot blowing process of the high-temperature furnace, smoke dust generated by the high-temperature furnace body is covered by the main cover body, then enters the flow guide cover and then is fed into the exhaust system through the exhaust outlets in sequence; when the furnace door is opened, smoke overflowing from the furnace door can be quickly covered by the flow guide cover and is fed into the exhaust system through the exhaust outlet; therefore, the smoke dust is effectively prevented from overflowing in the reaction process, the smoke dust is prevented from overflowing in the ending stage, the personal safety of operators is guaranteed in multiple ways, and the safety of using equipment is greatly improved. Besides, the maintenance plate is arranged on the main cover body, when the high-temperature furnace is maintained, the high-temperature furnace body can be maintained only by taking down the maintenance plate, the time is saved, and the working efficiency is further greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire assay analysis, in particular to an exhaust hood special for a fire assay high-temperature furnace. Background Art

[0002] When determining the precious metal content in minerals by the fire assay gravimetric method, the sample and reagents need to be heated to a molten state, and the precious metals are enriched in the lead button. After cupellation of the lead button, precious metal grains are obtained. A large amount of soot is generated during the process of heating and melting the sample by the fire assay high-temperature furnace and during the cupellation of the lead button. Such soot will pollute the environment and affect human health. In order to collect the soot, an exhaust hood is usually installed above the furnace body to collect the generated soot. The patent with the publication number CN214223727U discloses an exhaust system for an old-fashioned muffle furnace. In this system, three groups of old-fashioned muffle furnaces are installed on the workbench, an exhaust pipe is arranged directly above the old-fashioned muffle furnace, and three exhaust hoods corresponding to the three groups of old-fashioned muffle furnaces are suspended under the exhaust pipe, realizing the removal and collection of soot. However, due to a certain distance between the muffle furnace and the exhaust system, the generated soot cannot be collected by the exhaust system in the first time, so the soot in the working environment is still relatively large, and the body of the operator working in this space will still be affected by the soot. If you want to exhaust the soot in the room completely, you need to continue exhausting for a period of time after the muffle furnace stops working to exhaust the soot, which affects work efficiency and causes energy waste.

[0003] In view of this, it is necessary to design an exhaust hood special for a fire assay high-temperature furnace to solve the above problems. Summary of the Utility Model

[0004] Aiming at the defects of the above-mentioned prior art, the purpose of the utility model is to provide an exhaust hood special for a fire assay high-temperature furnace, which covers the soot generated by the fire assay high-temperature furnace body and transports it to the exhaust system in the first time, so as to ensure that the soot does not overflow, thereby reducing environmental pollution and ensuring the personal safety of the operator.

[0005] To achieve the above purpose, the utility model provides an exhaust hood special for a fire assay high-temperature furnace, including: a main hood body, a diversion hood communicated with one end of the main hood body, and an air outlet communicated with the top end of the diversion hood; the main hood body is arranged directly above the high-temperature furnace body; the high-temperature furnace body is covered by the cavity of the main hood body; notch openings are respectively arranged on both sides of the diversion hood.

[0006] Further, an opening and closing maintenance plate is arranged at the top end of the main hood body.

[0007] Further, the maintenance plate includes a first plate movably connected to one side of the top end of the main hood body and a second plate movably connected to the other side of the top end of the main hood body.

[0008] Further, the extending direction of the fairing is parallel to the extending direction of the furnace door of the high-temperature furnace body.

[0009] Further, the notch on the fairing is used to accommodate the state when the furnace door of the high-temperature furnace body is opened.

[0010] Further, the shape of the fairing includes one of a pyramid shape, a cylindrical shape, and a cuboid shape.

[0011] Further, an exhaust system is connected to the top end of the air outlet.

[0012] Further, the top end of the air outlet is connected to the exhaust system through a ventilation duct.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. The special exhaust hood for the fire assay high-temperature furnace provided by the present utility model is provided with a main hood body on the high-temperature furnace body, a fairing connected to the main hood body, and an air outlet connected to the top end of the fairing. The main hood body covers the entire high-temperature furnace body. When the high-temperature furnace is in the melting or cupellation process, the soot generated by the high-temperature furnace body is covered by the main hood body and then enters the fairing, and then is sent into the exhaust system through the air outlet in sequence. When the furnace door is opened, the soot overflowing from the furnace door can be quickly covered by the fairing and sent into the exhaust system through the air outlet. In this way, the soot overflow is effectively prevented from the reaction process (source), and the soot overflow is also prevented at the end stage, which multiple safeguards the personal safety of the operator and greatly improves the safety of using the equipment. Compared with the traditional way of setting the exhaust hood of the fire assay high-temperature furnace at a certain distance from the furnace body, the soot overflow is greatly reduced.

[0015] 2. The special exhaust hood for the fire assay high-temperature furnace provided by the present utility model is provided with a maintenance plate on the main hood body. When maintaining the high-temperature furnace, it is not necessary to remove the entire hood body, but only need to remove the maintenance plate to perform maintenance on the high-temperature furnace body, which saves time and thus greatly improves the work efficiency. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the special exhaust hood for the fire assay high-temperature furnace provided by the present utility model.

[0017] Reference Signs

[0018] 1 - Air outlet; 2 - Fairing; 3 - Notch; 4 - Main hood body; 5 - Maintenance plate. Detailed Embodiments

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be described in detail below with reference to the drawings and specific embodiments.

[0020] Here, it should also be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details less relevant to the present utility model are omitted. Additionally, it should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0021] As Figure 1 shown, a special exhaust hood for a fire assay high-temperature furnace provided by the present utility model includes: a main hood body 4, a diversion hood 2 connected to one end of the main hood body 4, and an air outlet 1 connected to the top end of the diversion hood 2; the main hood body 4 is disposed directly above the high-temperature furnace body; the high-temperature furnace body is covered by the cavity of the main hood body 4; notch openings 3 are respectively disposed on both sides of the diversion hood 2. The extending direction of the diversion hood 2 is parallel to the extending direction of the furnace door of the high-temperature furnace body; the notch openings 3 on the diversion hood 2 are used to accommodate the state when the furnace door of the high-temperature furnace body is opened. The shape of the diversion hood 2 includes one of a multi-pyramid shape, a cylindrical shape, and a cuboid shape. The top end of the air outlet 1 is connected to an exhaust system. The top end of the air outlet 1 is connected to the exhaust system through a ventilation duct.

[0022] With such a setting, when the high-temperature furnace is in the melting or cupellation process, the soot generated by the high-temperature furnace body is covered by the main hood body 4 and then enters the diversion hood 2, and then is successively sent into the exhaust system through the air outlet 1; and when the furnace door is opened, the soot overflowing from the furnace door can be quickly covered by the diversion hood 2 and sent into the exhaust system through the air outlet 1; thus, it effectively prevents the soot from overflowing both during the reaction process (source) and at the end stage, providing multiple safeguards for the personal safety of the operator and greatly improving the safety of using the equipment. Compared with the traditional way of setting the exhaust hood of the fire assay high-temperature furnace at a certain distance from the furnace body, it greatly reduces the overflow of soot.

[0023] Specifically, in some embodiments of the present utility model, an opening and closing type maintenance plate 5 is disposed at the top end of the main hood body 4. The maintenance plate 5 includes a first plate movably connected to one side of the top end of the main hood body 4 and a second plate movably connected to the other side of the top end of the main hood body 4; when both the first plate and the second plate are parallel to the top end of the main hood body 4, the maintenance plate 5 is in a closed state, and at this time the main hood body 4 is in a closed state.

[0024] With such a setting, when maintaining the high-temperature furnace, there is no need to remove the entire hood body, but only need to remove the maintenance plate 5 to perform maintenance on the high-temperature furnace body, saving time and thus greatly improving the work efficiency.

[0025] The following specifically describes the special exhaust hood for the fire assay high-temperature furnace provided by the present utility model in conjunction with the embodiments.

[0026] Embodiment

[0027] As Figure 1 shown, this embodiment provides a special exhaust hood for a fire assay high-temperature furnace, including: a main hood body 4, a flow guide hood 2 connected to one end of the main hood body 4, and an air outlet 1 connected to the top end of the flow guide hood 2; the main hood body 4 is arranged directly above the high-temperature furnace body; the high-temperature furnace body is covered by the cavity of the main hood body 4; notch openings 3 are respectively arranged on both sides of the flow guide hood 2. The bottom end of the main hood body 4 is in an open state; the bottom end of the flow guide hood 2 is in an open state; an opening and closing type maintenance plate 5 is arranged at the top end of the main hood body 4. The maintenance plate 5 includes a first plate movably connected to one side of the top end of the main hood body 4 and a second plate movably connected to the other side of the top end of the main hood body 4; when both the first plate and the second plate are parallel to the top end of the main hood body 4, the maintenance plate 5 is in a closed state, and at this time the main hood body 4 is in a closed state. The extending direction of the flow guide hood 2 is parallel to the extending direction of the furnace door of the high-temperature furnace body; the notch openings 3 on the flow guide hood 2 are used to accommodate the state when the furnace door of the high-temperature furnace body is opened (when the furnace door of the high-temperature furnace body is opened, the furnace door is exactly placed in the notch openings 3 of the flow guide hood 2). The shape of the flow guide hood 2 is a multi-pyramid shape.

[0028] The following describes the working process of a special exhaust hood for a fire assay high-temperature furnace provided by the present utility model:

[0029] As Figure 1 shown, when the high-temperature furnace is in the melting or cupellation process, the soot generated by the high-temperature furnace body is covered by the main hood body 4 and then enters the flow guide hood 2, and then is successively sent into the exhaust system through the air outlet 1; when the furnace door is opened (when the furnace door of the high-temperature furnace body is opened, the furnace door rises upward and is exactly placed in the notch openings 3 of the flow guide hood 2), the soot overflowing from the furnace door can be quickly covered by the cavity of the flow guide hood 2 and sent into the exhaust system through the air outlet 1; when the furnace door is closed, smoke will also overflow from the furnace door and the furnace body, and at this time the smoke can also be covered by the main hood body 4 and the flow guide hood 2 and discharged. When maintaining the high-temperature furnace, only need to remove the maintenance plate 5 to perform maintenance on the high-temperature furnace body.

[0030] In summary, the present utility model provides an exhaust hood dedicated to a fire assay high-temperature furnace. By providing a main hood on the high-temperature furnace body, a diversion hood connected to the main hood, and an exhaust port connected to the top of the diversion hood, wherein the main hood covers the entire high-temperature furnace body; when the high-temperature furnace is in the melting or cupellation process, the soot generated by the high-temperature furnace body is covered by the main hood and then enters the diversion hood, and then is sent into the exhaust system through the exhaust port in sequence; when the furnace door is opened, the soot overflowing from the furnace door can be quickly covered by the diversion hood and sent into the exhaust system through the exhaust port; thus, the overflow of soot is effectively prevented from the reaction process (source), and the overflow of soot is also prevented at the end stage, providing multiple guarantees for the personal safety of the operator and greatly improving the safety of the equipment in use. In addition, by providing an inspection plate on the main hood, when inspecting the high-temperature furnace, only the inspection plate needs to be removed to inspect the high-temperature furnace body, saving time and thus greatly improving the work efficiency.

[0031] The above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A special exhaust hood for fire assay high-temperature furnace, characterized in that Including: A main cover body, a flow guiding cover communicated with one end of the main cover body, and an air outlet communicated with the top end of the flow guiding cover; the main cover body is arranged directly above the high-temperature furnace body; the high-temperature furnace body is covered by the cavity of the main cover body; notch openings are respectively arranged on both sides of the flow guiding cover; The notch openings on the flow guiding cover are used to accommodate the state when the furnace door of the high-temperature furnace body is opened; The top end of the air outlet is connected with an exhaust system, and the top end of the air outlet is connected with the exhaust system through a ventilation duct.

2. The exhaust hood dedicated to the cupellation high-temperature furnace according to claim 1, wherein: An opening and closing maintenance plate is arranged at the top end of the main cover body.

3. The exhaust hood dedicated to the cupellation high-temperature furnace according to claim 2, characterized in that: The maintenance plate includes a first plate movably connected to one side of the top end of the main cover body and a second plate movably connected to the other side of the top end of the main cover body.

4. The exhaust hood dedicated to the cupellation high-temperature furnace according to claim 3, characterized in that: The extending direction of the flow guiding cover is parallel to the extending direction of the furnace door of the high-temperature furnace body.

5. The exhaust hood special for fire assay high-temperature furnace according to claim 1, characterized in that: The shape of the flow guiding cover includes one of a multi-pyramid shape, a cylindrical shape, and a cuboid shape.

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