A pressure relief device for a smelting furnace

Abstract

The utility model relates to the technical field of metal smelting, provide a kind of smelting furnace pressure relief device, including mounting seat, gas pressure valve, gas inlet pipeline and pressure relief pipeline, the mounting seat is fixed on smelting furnace, the communicating pipe orifice that is inserted into smelting furnace inside is provided on the mounting seat, the gas pressure chamber is formed in the mounting seat, the communicating pipe orifice and the gas pressure chamber between form gas outlet, the gas pressure valve is arranged in the gas pressure chamber, the gas inlet pipeline and the pressure relief pipeline are respectively arranged on the mounting seat, the gas inlet pipeline and the gas pressure chamber between form gas inlet, the pressure relief pipeline and the gas pressure chamber between form pressure relief, the valve core for reciprocating sealing the gas outlet and the gas inlet is equipped on the gas pressure valve, the valve core can slide relative to the gas pressure chamber;The utility model solves the problem that traditional smelting furnace lacks pressure relief capacity, and has the advantages of simple structure and low manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, and more specifically, to a pressure relief device for a smelting furnace. Background Technology

[0002] Therefore, as a core piece of equipment in industries such as metallurgy and casting, the operational safety of smelting furnaces directly affects production efficiency and personnel safety. During the smelting process, the pressure inside the furnace fluctuates drastically due to various factors. In traditional smelting furnaces, fuel is injected into the furnace through a flame nozzle and ignited, generating heat that heats the crucible. The flue gas is then discharged through the furnace exhaust port, thus performing the alloy smelting operation.

[0003] However, traditional smelting furnaces, such as the smelting machine disclosed in CN219551165U, include a base, a frame on the upper left side of the base, a control console on the upper right side of the base, a mounting bracket on the front of the frame, a furnace fixedly mounted on the upper end of the mounting bracket, a hinge assembly on the left side of the furnace, a furnace cover hinged to the left side of the furnace via the hinge assembly, a fixing mechanism on the right side of the furnace, and a power supply section and a pipe connection section on the back of the base. However, the aforementioned smelting machine has the following drawback: when the pressure of the gas injected into the flame nozzle suddenly increases, causing a sudden increase in gas flow and increasing the concentration of the mixed gas injected into the furnace, resulting in a sudden explosion, the instantaneously expanding gas inside the furnace often cannot be quickly released outside the furnace, leading to safety issues. Utility Model Content

[0004] Therefore, in order to solve the problem of the lack of pressure relief capacity in traditional smelting furnaces, this utility model provides a pressure relief device for smelting furnaces, the specific technical solution of which is as follows:

[0005] A pressure relief device for a smelting furnace includes a mounting base, a pressure valve, an inlet pipe, and a pressure relief pipe. The mounting base is fixed to the smelting furnace and has a connecting port that extends into the interior of the furnace. A pressure chamber is formed inside the mounting base, and an outlet is formed between the connecting port and the pressure chamber. The pressure valve is located within the pressure chamber. The inlet pipe and the pressure relief pipe are respectively positioned vertically on the mounting base. An inlet is formed between the inlet pipe and the pressure chamber, and a pressure relief outlet is formed between the pressure relief pipe and the pressure chamber. The pressure valve has a valve core for reciprocatingly sealing the outlet and the inlet, and the valve core is slidable relative to the pressure chamber.

[0006] The aforementioned smelting furnace pressure relief device, by providing a connecting pipe port, facilitates the release of pressure from the gas inside the smelting furnace. By incorporating a pressure valve, when gas discharged from the smelting furnace enters the pressure chamber, it pushes the valve upward within the chamber, thereby causing the valve core to seal the inlet and establishing a connection between the pressure relief pipe and the pressure chamber, thus achieving pressure relief. When the pressure inside the smelting furnace is insufficient to release the gas, the pressure valve falls back and seals the outlet, achieving a seal inside the smelting furnace. This structural design solves the safety issues caused by the inability to quickly release gas outside the furnace, a problem inherent in traditional smelting furnaces.

[0007] Furthermore, the mounting base is threadedly fixed to a chassis at its bottom, the chassis is detachably inserted into the smelting furnace, the connecting pipe is located inside the chassis, one end of the connecting pipe extends into the interior of the smelting furnace, and the other end of the connecting pipe is connected to the gas outlet.

[0008] Furthermore, the air pressure chamber includes a first air outlet chamber, a connecting chamber, and a second air outlet chamber that are connected from bottom to top. A first sealed opening is formed between the first air outlet chamber and the connecting chamber, and a second sealed opening is formed between the connecting chamber and the second air outlet chamber. The air outlet is formed at the bottom of the first air outlet chamber, the pressure relief port is formed on the side of the first air outlet chamber, and the air inlet is formed on the side of the connecting chamber.

[0009] Furthermore, the mounting base is also provided with a flow groove and an air outlet pipe. The air inlet pipe is located on one side of the mounting base, and the air outlet pipe is located on the other side of the mounting base. The flow groove connects the second air outlet chamber and the air outlet pipe.

[0010] Furthermore, a positioning frame is provided at the bottom of the first air outlet chamber; the air pressure valve includes the valve core and the abutment sleeve, the valve core is movably mounted on the positioning frame, the abutment sleeve is sleeved on the outer surface of the valve core, a second sealing block and a first sealing block are respectively provided at the upper and lower ends of the valve core, the bottom of the abutment sleeve is fixedly connected to the first sealing block, and the top of the abutment sleeve is used to abut against the second sealing block.

[0011] Furthermore, the first sealing block is disposed in the first air outlet chamber, and the second sealing block is disposed in the second air outlet chamber.

[0012] Furthermore, the top of the mounting base is covered with a sealing cover, and an extension groove communicating with the top of the second air outlet chamber is provided inside the sealing cover.

[0013] Furthermore, the valve core includes a rod portion and a pressure-receiving portion. One end of the rod portion is connected to the pressure-receiving portion and integrally formed. The other end of the rod portion is adapted to the extension groove. The abutment sleeve is sleeved on the outer surface of the rod portion. The first sealing block and the second sealing block are both disposed on the rod portion.

[0014] Furthermore, the pneumatic valve also includes an elastic element wound around the rod, one end of which abuts against the top of the second sealing block, and the other end of which abuts against the sealing cap.

[0015] Furthermore, a cylindrical block protrudes from the side wall of the connecting chamber, and a first limiting flange protrudes from the top of the first sealing block. The first limiting flange is used to abut against the bottom of the cylindrical block and seal the first sealing opening. A second limiting flange protrudes from the bottom of the second sealing block. The second limiting flange is used to abut against the top of the cylindrical block and seal the second sealing opening. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of the smelting furnace pressure relief device according to an embodiment of this utility model;

[0017] Figure 2 This is a second schematic diagram of the structure of the smelting furnace pressure relief device according to an embodiment of this utility model;

[0018] Figure 3 This is a cross-sectional structural schematic diagram of the pressure relief device for a smelting furnace according to an embodiment of the present invention;

[0019] Figure 4 This is a partial structural schematic diagram of the pressure relief device for a smelting furnace according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Mounting base; 11. Chassis; 12. Sealing cover; 121. Extension groove; 2. Air pressure valve; 21. Valve core; 211. Rod; 212. Pressure-bearing part; 22. Abutment sleeve; 23. First sealing block; 24. Second sealing block; 25. Elastic element; 3. Air inlet pipe; 4. Pressure relief pipe; 5. Connecting port; 6. Air pressure chamber; 7. Flow groove; 8. Air outlet pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0026] like Figures 1-4 As shown, a pressure relief device for a smelting furnace according to one embodiment of the present invention includes a mounting base 1, a pressure valve 2, an air inlet pipe 3, and a pressure relief pipe 4. The mounting base 1 is fixed on the smelting furnace and has a connecting port 5 that is inserted into the interior of the smelting furnace. A pressure chamber 6 is formed inside the mounting base 1, and an air outlet is formed between the connecting port 5 and the pressure chamber 6. The pressure valve 2 is disposed in the pressure chamber 6. The air inlet pipe 3 and the pressure relief pipe 4 are respectively disposed vertically on the mounting base 1. An air inlet is formed between the air inlet pipe 3 and the pressure chamber 6, and a pressure relief outlet is formed between the pressure relief pipe 4 and the pressure chamber 6. The pressure valve 2 is provided with a valve core 21 for reciprocating and sealing the air outlet and the air inlet. The valve core 21 can slide relative to the pressure chamber 6.

[0027] The aforementioned smelting furnace pressure relief device, by providing a connecting pipe 5, facilitates the release of pressure from the gas inside the smelting furnace. By incorporating a pressure valve 2, when the gas discharged from the smelting furnace enters the pressure chamber 6, it pushes the valve 2 upward within the pressure chamber 6, thereby causing the valve core 21 to seal the air inlet, thus connecting the pressure relief pipe 4 and the pressure chamber 6 to achieve pressure relief. When the pressure inside the smelting furnace is insufficient to discharge the gas, the pressure valve 2 falls back and seals the air outlet, achieving a seal inside the smelting furnace. This structure solves the safety problems caused by the inability to quickly release gas from the furnace body in traditional smelting furnaces.

[0028] like Figure 1 and Figure 2As shown, in one embodiment, a base 11 is threadedly fixed to the bottom of the mounting base 1. The base 11 is detachably inserted into the smelting furnace. A connecting pipe 5 is disposed inside the base 11, with one end of the connecting pipe 5 extending into the interior of the smelting furnace and the other end communicating with the gas outlet. This facilitates the disassembly, assembly, and maintenance of the pressure relief device.

[0029] In one embodiment, the air pressure chamber 6 includes a first air outlet chamber, a connecting chamber, and a second air outlet chamber that are connected from bottom to top. A first sealed opening is formed between the first air outlet chamber and the connecting chamber, and a second sealed opening is formed between the connecting chamber and the second air outlet chamber. An air outlet is formed at the bottom of the first air outlet chamber, a pressure relief port is formed on the side of the first air outlet chamber, and an air inlet is formed on the side of the connecting chamber.

[0030] like Figure 4 As shown, in one embodiment, the mounting base 1 is further provided with a flow channel 7 and an exhaust pipe 8. The intake pipe 3 is located on one side of the mounting base 1, and the exhaust pipe 8 is located on the other side of the mounting base 1. The flow channel 7 connects the second exhaust chamber and the exhaust pipe 8. When the air valve is lifted, the air flowing from the intake pipe 3 can be transferred to the exhaust pipe 8 via the flow channel 7 and discharged. When the air valve is reset, the air in the intake pipe 3 can flow into the first exhaust chamber, so that the first exhaust chamber and the inside of the smelting furnace form a stable pressure balance. Thus, when the gas inside the furnace expands instantaneously, it can be quickly released to the outside of the furnace. At the same time, the pressure balance can reduce equipment damage caused by pressure changes, thereby extending the service life of the equipment.

[0031] like Figure 3 and Figure 4 As shown, in one embodiment, a positioning frame is provided at the bottom of the first air outlet chamber; the air pressure valve 2 includes a valve core 21 and an abutment sleeve 22. The valve core 21 is movably mounted on the positioning frame, and the abutment sleeve 22 is sleeved on the outer surface of the valve core 21. A second sealing block 24 and a first sealing block 23 are respectively provided at the upper and lower ends of the valve core 21. The bottom of the abutment sleeve 22 is fixedly connected to the first sealing block 23, and the top of the abutment sleeve 22 is used to abut against the second sealing block 24.

[0032] In one embodiment, the first blocking block 23 is disposed in the first air outlet chamber, and the second blocking block 24 is disposed in the second air outlet chamber.

[0033] like Figures 1-4 As shown, in one embodiment, the top of the mounting base 1 is covered with a sealing cover 12, and the sealing cover 12 has an extension groove 121 that communicates with the top of the second vent chamber. The sealing cover 12 can effectively prevent foreign objects such as solids and liquids from entering, protecting the internal structure and components from damage.

[0034] like Figure 3 and Figure 4As shown, in one embodiment, the valve core 21 includes a rod portion 211 and a pressure-receiving portion 212. One end of the rod portion 211 is connected to the pressure-receiving portion 212 and integrally formed. The other end of the rod portion 211 is adapted to the extension groove 121. The abutment sleeve 22 is sleeved on the outer surface of the rod portion 211. The first sealing block 23 and the second sealing block 24 are both disposed on the rod portion 211.

[0035] like Figure 3 and Figure 4 As shown, in one embodiment, the pneumatic valve 2 further includes an elastic element 25 wound around the stem 211. One end of the elastic element 25 abuts against the top of the second sealing block 24, and the other end of the elastic element 25 abuts against the sealing cap 12. The elastic element 25, through its elastic restoring force, can automatically reset the valve core 21.

[0036] Preferably, the elastic element 25 is a spring.

[0037] In one embodiment, a cylindrical block protrudes from the side wall of the connecting chamber, and a first limiting flange protrudes from the top of the first sealing block 23. The first limiting flange is used to abut against the bottom of the cylindrical block and seal the first sealing opening. A second limiting flange protrudes from the bottom of the second sealing block 24. The second limiting flange is used to abut against the top of the cylindrical block and seal the second sealing opening.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pressure relief device for a smelting furnace, characterized in that, The device includes a mounting base, a pressure valve, an inlet pipe, and a pressure relief pipe. The mounting base is fixed to a smelting furnace and has a connecting port that extends into the furnace. A pressure chamber is formed inside the mounting base, and an outlet is formed between the connecting port and the pressure chamber. The pressure valve is located within the pressure chamber. The inlet pipe and the pressure relief pipe are respectively positioned vertically on the mounting base. An inlet is formed between the inlet pipe and the pressure chamber, and a pressure relief outlet is formed between the pressure relief pipe and the pressure chamber. The pressure valve has a valve core for reciprocating and sealing the outlet and the inlet, and the valve core can slide relative to the pressure chamber.

2. The smelting furnace pressure relief device according to claim 1, characterized in that, The mounting base is threadedly fixed to a chassis at its bottom. The chassis is detachably inserted into the smelting furnace. The connecting pipe is located inside the chassis. One end of the connecting pipe extends into the interior of the smelting furnace, and the other end of the connecting pipe is connected to the gas outlet.

3. The smelting furnace pressure relief device according to claim 1, characterized in that, The air pressure chamber includes a first air outlet chamber, a connecting chamber, and a second air outlet chamber that are connected from bottom to top. A first sealed opening is formed between the first air outlet chamber and the connecting chamber, and a second sealed opening is formed between the connecting chamber and the second air outlet chamber. The air outlet is formed at the bottom of the first air outlet chamber, the pressure relief port is formed on the side of the first air outlet chamber, and the air inlet is formed on the side of the connecting chamber.

4. The smelting furnace pressure relief device according to claim 3, characterized in that, The mounting base is also provided with a flow groove and an air outlet pipe. The air inlet pipe is located on one side of the mounting base, and the air outlet pipe is located on the other side of the mounting base. The flow groove connects the second air outlet chamber and the air outlet pipe.

5. The smelting furnace pressure relief device according to claim 3, characterized in that, The first air outlet chamber is provided with a positioning frame at the bottom; the air pressure valve includes the valve core and the abutment sleeve. The valve core is movably mounted on the positioning frame, and the abutment sleeve is sleeved on the outer surface of the valve core. The upper and lower ends of the valve core are respectively provided with a second sealing block and a first sealing block. The bottom of the abutment sleeve is fixedly connected to the first sealing block, and the top of the abutment sleeve is used to abut against the second sealing block.

6. The smelting furnace pressure relief device according to claim 5, characterized in that, The first sealing block is disposed in the first air outlet chamber, and the second sealing block is disposed in the second air outlet chamber.

7. The smelting furnace pressure relief device according to claim 5, characterized in that, The mounting base is covered with a sealing cover, and an extension groove communicating with the top of the second air outlet chamber is provided inside the sealing cover.

8. The smelting furnace pressure relief device according to claim 7, characterized in that, The valve core includes a rod and a pressure-receiving part. One end of the rod is connected to the pressure-receiving part and integrally formed. The other end of the rod is adapted to the extension groove. The abutment sleeve is sleeved on the outer surface of the rod. The first sealing block and the second sealing block are both disposed on the rod.

9. The smelting furnace pressure relief device according to claim 8, characterized in that, The pneumatic valve also includes an elastic element wound around the rod, one end of which abuts against the top of the second sealing block, and the other end of which abuts against the sealing cap.

10. The smelting furnace pressure relief device according to claim 5, characterized in that, A cylindrical block protrudes from the side wall of the connecting chamber. A first limiting flange protrudes from the top of the first sealing block. The first limiting flange is used to abut against the bottom of the cylindrical block and seal the first sealing opening. A second limiting flange protrudes from the bottom of the second sealing block. The second limiting flange is used to abut against the top of the cylindrical block and seal the second sealing opening.

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