Pressure relief device of zinc smelting electric furnace

Abstract

The pressure relief device comprises an electric furnace body, a furnace door installed on the outer side of the electric furnace body and a digital display instrument installed on the top of the electric furnace body, a pressure relief chamber is fixedly arranged at the side end of the electric furnace body, and a plurality of fan-shaped grooves are formed in the pressure relief chamber; a plurality of pressure relief grooves corresponding to the fan-shaped grooves are formed in the arc-shaped end face of the pressure discharge chamber, a pressure control door is fixedly arranged at the outer end of the rotary sleeve, and a component for regulating and controlling the internal space of the pressure discharge chamber is arranged outside the electric furnace body. According to the electric furnace, firstly, through rotation of the pressure control door, control over the pressure in the furnace by personnel is facilitated, it is guaranteed that the pressure in the electric furnace is always kept in an ideal state, secondly, along with movement of the sliding connection frame, the internal high-pressure environment of the pressure discharging chamber is relieved, and after the internal environment of the pressure discharging chamber communicates with the external environment, the pressure discharging chamber is closed. And the gas of which the pressure is relieved is exhausted outwards, so that potential safety hazards caused by the exhausted gas to workers can be effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of zinc smelting electric furnaces, and in particular to a pressure relief device of a zinc smelting electric furnace. Background Art

[0002] The electrothermal zinc smelting method uses electricity as a heat source to directly heat the zinc-containing charge and continuously reduce and distill out metallic zinc.

[0003] The electric heating method heats the charge directly in the furnace without the need for a combustion chamber. Therefore, the furnace used in the electric heating method occupies a small volume, has a small heat loss, and a high heat utilization rate. Therefore, the processing method of zinc smelting by electric furnaces has been rapidly promoted and popularized. In the process of using electric furnaces to process and smelt zinc materials, the staff is required to control the pressure inside the electric furnace. The quality of the pressure control in the furnace can determine the quality of the zinc materials produced and ensure that the smelted zinc materials meet specific industry standards. However, most of the existing electric furnace pressure relief equipment uses a pressure relief valve to control the loosening of the pressure relief valve to achieve the discharge of the gas pressure in the furnace. This pressure relief method will cause the pressure in the furnace to be irreversible. If the air pressure drops rapidly, the actual pressure in the furnace will differ greatly from the pressure required for smelting zinc materials, causing the staff to re-pressurize the electric furnace to raise the pressure environment inside the electric furnace to an environment suitable for zinc smelting. This leads to more resource consumption in the zinc smelting process, and is not conducive to the one-time rapid prototyping of zinc materials, and will also affect the efficiency of manufacturers in preparing zinc materials. At the same time, after the pressure in the furnace is discharged outward for a short time under the action of the pressure relief valve, the high-temperature furnace gas is ejected outward under the action of high pressure, which may cause safety hazards to factory workers working in the surrounding area, thus not being conducive to creating a safe and worry-free working environment. Summary of the invention

[0004] The purpose of the present invention is to provide a pressure relief device for a zinc smelting electric furnace in order to solve the above-mentioned problem.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pressure relief device for a zinc smelting electric furnace, comprising an electric furnace body, a furnace door installed on the outside of the electric furnace body and a digital display instrument installed on the top of the electric furnace body, a pressure relief chamber with a semicircular structure is fixedly provided on the side end of the electric furnace body, a plurality of fan-shaped grooves are provided inside the pressure relief chamber, a plurality of pressure relief grooves corresponding to the fan-shaped grooves are opened on the arc-shaped end surface of the pressure relief chamber, and the fan-shaped grooves are vertically distributed to the opening direction of the pressure relief grooves, two mounting frames are fixedly provided inside the electric furnace body, a shaft rod penetrating the mounting frame is also fixedly provided inside the electric furnace body, a rotary sleeve is rotatably provided on the outside of the shaft rod between the two mounting frames, a pressure control door is fixedly provided on the outer end of the rotary sleeve, a component for driving the pressure control door to rotate is provided in the electric furnace body, a strip frame is fixedly provided on the inner end of the mounting frame on the upper side of the rotary sleeve, a flexible rubber belt is fixedly provided between the pressure control door and the strip frame, a baffle plate is fixedly provided between the two strip frames on the lower side of the rotary sleeve, and a component for regulating the internal space of the pressure relief chamber is provided on the outside of the electric furnace body.

[0006] Preferably, the component driving the pressure-controlled door to rotate is a rotating shaft rotatably arranged inside the electric furnace body, and a second motor installed at the outer end of the electric furnace body to control the rotation of the rotating shaft.

[0007] Preferably, a gear is fixedly provided at the outer end of the rotating shaft, and meshing teeth meshing with the gear are fixedly provided at the outer end of the rotating sleeve.

[0008] Preferably, the component for regulating the internal space of the pressure relief chamber is a sliding frame slidably arranged on the outside of the pressure relief chamber, and a component for controlling the horizontal movement of the sliding frame, and the sliding frame is formed by welding a fan-shaped panel and an arc-shaped panel at 90 degrees.

[0009] Preferably, a side baffle is fixedly provided at the outer end of the pressure relief chamber between two adjacent sliding frames, and an arc-shaped baffle is fixedly provided between the sliding frames on the same side.

[0010] Preferably, the components for controlling the horizontal movement of the sliding frame are a sliding sleeve fixed to the outer end of the arc baffle, a bracket fixed to the outer end of the electric furnace body, two rotating rods rotatably arranged on the inner side of the bracket, and a combination piece for keeping the two rotating rods rotating synchronously.

[0011] Preferably, the rotary rod passes through the arc-shaped baffle, and the sliding sleeve is sleeved on the outside of the rotary rod and is slidably arranged with the rotary rod.

[0012] Preferably, a protrusion is fixedly provided at the outer end of the rotary rod, and the interior of the sliding sleeve has a spiral slide rail that cooperates with the protrusion to slide.

[0013] Preferably, the component for keeping the two rotating rods rotating synchronously is a wheel disc rotatably arranged at the outer end of the bracket, and the outer sides of the two wheel discs are sleeved with a transmission chain for keeping the linkage, and the outer end of the bracket is installed with a first motor for controlling the rotation of one of the rotating rods.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The present application provides a pressure relief chamber on the electric furnace body, a shaft rod on the mounting frame, a rotary sleeve on the shaft rod, and a pressure control door on the rotary sleeve. The rotary sleeve is controlled to drive the pressure control door to rotate. As the pressure control door rotates, the space connected to the pressure relief chamber of the electric furnace body gradually expands, thereby accurately controlling the internal pressure of the electric furnace. Through the rotation of the pressure control door, the electric furnace body is gradually depressurized, which is beneficial for the staff to control the pressure in the furnace and ensure that the pressure environment inside the electric furnace is maintained in an ideal state, which is beneficial to the preparation of zinc materials.

[0015] 2. In the present application, a sliding frame and a side baffle are provided on the outside of the pressure control chamber, a bracket is provided on the electric furnace body, and a rotating rod and a first motor are provided on the bracket. When the sliding frame moves toward the outside of the pressure relief chamber, the internal space of the pressure relief chamber expands, and the high-pressure environment inside the pressure relief chamber will gradually be relieved. When the arc-shaped panel of the sliding frame moves to the edge of the arc-shaped surface of the pressure relief chamber, the pressure relief chamber is connected to the external environment, and the gas with pressure relief will be released to the outside, thereby effectively preventing the exhaust gas from causing safety hazards to people working in the surrounding area, thereby achieving the effect of protecting the workers' safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a front perspective view provided according to an embodiment of the present invention; Figure 2 It shows a schematic structural diagram of the sliding frame being separated from the pressure relief chamber according to an embodiment of the present invention; Figure 3 A front cross-sectional view of an electric furnace body provided according to an embodiment of the present invention is shown; Figure 4 A side sectional view of an electric furnace body provided according to an embodiment of the present invention is shown; Figure 5 An explosion schematic diagram provided according to an embodiment of the present invention is shown.

[0017] Legend: 1. Electric furnace body; 2. Furnace door; 3. Digital display instrument; 4. Pressure relief chamber; 401. Fan-shaped groove; 402. Pressure relief groove; 5. Side baffle; 6. Sliding frame; 7. Arc baffle; 8. Sliding sleeve; 9. Spiral slide rail; 10. Bracket; 11. Rotary rod; 12. Bump; 13. Wheel; 14. Transmission chain; 15. First motor; 16. Mounting frame; 17. Strip frame; 18. Baffle plate; 19. Shaft; 20. Rotary sleeve; 21. Gear; 22. Pressure control door; 23. Flexible rubber belt; 24. Rotating shaft; 25. Gear; 26. Second motor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-5 The present invention provides a technical solution: a pressure relief device for a zinc smelting electric furnace, comprising an electric furnace body 1, a furnace door 2 installed on the outside of the electric furnace body 1 and a digital display instrument 3 installed on the top of the electric furnace body 1, a pressure relief chamber 4 with a semicircular structure is fixedly arranged at the side end of the electric furnace body 1, the interior of the pressure relief chamber 4 has a plurality of fan-shaped grooves 401, a plurality of pressure relief grooves 402 corresponding to the fan-shaped grooves 401 are opened on the arc-shaped end surface of the pressure relief chamber 4, the fan-shaped grooves 401 and the opening direction of the pressure relief grooves 402 are vertically distributed, and two mounting frames 16 are fixedly arranged inside the electric furnace body 1 The interior of the electric furnace body 1 is also fixedly provided with a shaft 19 that penetrates the mounting frame 16. The outer side of the shaft 19 is located between the two mounting frames 16 and a rotary sleeve 20 is rotated. The outer end of the rotary sleeve 20 is fixedly provided with a pressure control door 22. The electric furnace body 1 is provided with a component for driving the pressure control door 22 to rotate. The inner end of the mounting frame 16 is located on the upper side of the rotary sleeve 20 and is fixedly provided with a strip frame 17. A flexible rubber belt 23 is fixedly provided between the pressure control door 22 and the strip frame 17. A baffle plate 18 is fixedly provided between the two strip frames 17 and on the lower side of the rotary sleeve 20. The exterior of the electric furnace body 1 is provided with There is a component for regulating the internal space of the pressure relief chamber 4. When the internal pressure of the electric furnace body 1 needs to be discharged, it is necessary to control the rotary sleeve 20 set on the outer side of the shaft 19 to drive the pressure control door 22 to rotate. As the pressure control door 22 rotates, the space connected between the electric furnace body 1 and the pressure relief chamber 4 gradually expands, thereby achieving the purpose of adjusting the internal pressure of the electric furnace body 1. By adjusting the internal space of the zinc smelting electric furnace, the internal pressure is discharged. Compared with the traditional method of directly using a pressure relief valve to relieve pressure, the electric furnace is gradually relieved by rotating the pressure control door 22. The main body 1 is subjected to pressure relief treatment, which is beneficial for the staff to control the pressure in the furnace and ensure that the pressure environment inside the electric furnace remains in an ideal state, which is beneficial to the preparation of zinc materials and prevents the pressure from being unloaded too quickly, so that the environment in the furnace cannot meet the needs of the zinc smelting process and affects the preparation of zinc materials. The flexible rubber belt 23 serves to close the contact gap between the pressure control door 22 and the arc-shaped inner end face of the pressure relief chamber 4. At the same time, a sealing strip is installed on the side end of the pressure control door 22 between the pressure control door 22 and the inner end plane of the pressure relief chamber 4 to prevent air leakage.

[0020] Specifically, Figure 3-5As shown, the components that drive the pressure control door 22 to rotate are a rotating shaft 24 that is rotatably arranged inside the electric furnace body 1, and a second motor 26 installed at the outer end of the electric furnace body 1 to control the rotation of the rotating shaft 24. A gear 25 is fixedly provided at the outer end of the rotating shaft 24, and a meshing tooth 21 meshing with the gear 25 is fixedly provided at the outer end of the rotary sleeve 20. The second motor 26 installed at the outer end of the electric furnace body 1 is started to drive the rotating shaft 24 to rotate, so that the gear 25 fixed to the rotating shaft 24 drives the rotary sleeve 20 meshing with it to rotate, thereby achieving the purpose of adjusting the rotation angle of the pressure control door 22.

[0021] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the components for regulating the internal space of the pressure relief chamber 4 are a sliding frame 6 slidably arranged on the outside of the pressure relief chamber 4, and a component for controlling the horizontal movement of the sliding frame 6. The sliding frame 6 is formed by welding a fan-shaped panel and an arc panel at ninety degrees. The outer end of the pressure relief chamber 4 is located between two adjacent sliding frames 6, and a side baffle 5 is fixedly arranged. An arc baffle 7 is fixedly arranged between the sliding frames 6 on the same side. The combination of the sliding frame 6 and the side baffle 5 forms a secondary chamber on the side of the pressure relief chamber 4. When the sliding frame 6 moves toward the outside of the pressure relief chamber 4 along the side baffle 5, the internal space of the pressure relief chamber 4 is expanded. The purpose of adjusting the pressure relief capacity of the pressure relief chamber 4 is achieved by adjusting the internal space of the pressure relief chamber 4. An airtight rubber strip for preventing gas leakage is also provided at the fitting end surface of the pressure relief chamber 4. When the high-pressure and high-temperature gas enters the auxiliary chamber through the fan-shaped groove 401, the pressure inside the electric furnace can be relieved. As the sliding frame 6 moves outward, the internal space of the entire pressure relief chamber 4 will gradually expand, and the high-pressure environment inside it will gradually be relieved. When the curved panel of the sliding frame 6 moves to the edge of the curved surface of the pressure relief chamber 4, the pressure relief groove 402 opened on the pressure relief chamber 4 is exposed to the outside, so that the internal environment of the pressure relief chamber 4 is connected with the external environment, and the gas after the pressure is relieved will be released to the outside, thereby effectively preventing the exhaust gas from causing safety hazards to the surrounding workers, thereby achieving the effect of protecting the workers' safety.

[0022] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the components for controlling the horizontal movement of the sliding frame 6 are a sliding sleeve 8 fixed on the outer end of the arc baffle 7, a bracket 10 fixed on the outer end of the electric furnace body 1, two rotating rods 11 rotatably arranged on the inner side of the bracket 10, and a joint for keeping the two rotating rods 11 rotating synchronously. The rotating rod 11 passes through the arc baffle 7, the sliding sleeve 8 is sleeved on the outside of the rotating rod 11 and is slidably arranged with the rotating rod 11, a protrusion 12 is fixed on the outer end of the rotating rod 11, and the interior of the sliding sleeve 8 has a spiral slide rail 9 that cooperates with the sliding of the protrusion 12 to slide. The rotation of the rotating rod 11 is controlled so that the protrusion 12 fixed on the rotating rod 11 slides along the spiral slide rail 9. The compression transmission of the spiral slide rail 9 by the protrusion 12 makes the arc baffle 7 fixed to the sliding sleeve 8 drive the sliding frame 6 fixed thereto to move in the horizontal direction, thereby achieving the effect of adjusting the internal space of the pressure relief chamber 4.

[0023] Specifically, Figure 1 , Figure 2 and Figure 5 As shown, the component that keeps the two rotating rods 11 rotating synchronously is a wheel disc 13 rotatingly arranged at the outer end of the bracket 10. The outer sides of the two wheel discs 13 are sleeved with a transmission chain 14 that keeps them linked. The outer end of the bracket 10 is installed with a first motor 15 that controls the rotation of one of the rotating rods 11. The first motor 15 installed on the bracket 10 is started to drive one of the rotating rods 11 to rotate, so that the rotating rod 11 drives the wheel disc 13 fixed thereto to rotate. Under the action of the transmission chain 14, the two wheel discs 13 rotate synchronously, thereby achieving the stability of the transmission of the arc baffle 7.

[0024] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure relief device for a zinc smelting electric furnace, comprising an electric furnace body (1), a furnace door (2) installed outside the electric furnace body (1), and a digital display instrument (3) installed on the top of the electric furnace body (1), characterized in that: A pressure relief chamber (4) with a semicircular structure is fixedly provided at the side end of the electric furnace body (1), the interior of the pressure relief chamber (4) has a plurality of fan-shaped grooves (401), a plurality of pressure relief grooves (402) corresponding to the fan-shaped grooves (401) are opened on the arc-shaped end surface of the pressure relief chamber (4), the fan-shaped grooves (401) and the opening direction of the pressure relief grooves (402) are vertically distributed, two mounting frames (16) are fixedly provided inside the electric furnace body (1), and a shaft (19) penetrating the mounting frames (16) is also fixedly provided inside the electric furnace body (1), and the outer side of the shaft (19) is located between the two mounting frames. A rotary sleeve (20) is rotatable between the two mounting brackets (16), a pressure control door (22) is fixedly provided at the outer end of the rotary sleeve (20), a component for driving the pressure control door (22) to rotate is provided in the electric furnace body (1), an inner end of the mounting bracket (16) is located on the upper side of the rotary sleeve (20) and a strip frame (17) is fixedly provided, a flexible rubber belt (23) is fixedly provided between the pressure control door (22) and the strip frame (17), a baffle plate (18) is fixedly provided between the two strip frames (17) and located on the lower side of the rotary sleeve (20), and a component for regulating the internal space of the pressure discharge chamber (4) is provided outside the electric furnace body (1).

2. The pressure relief device for zinc smelting electric furnace according to claim 1, characterized in that: The components driving the pressure control door (22) to rotate are a rotating shaft (24) rotatably arranged inside the electric furnace body (1), and a second motor (26) mounted at the outer end of the electric furnace body (1) to control the rotation of the rotating shaft (24).

3. The pressure relief device for zinc smelting electric furnace according to claim 2, characterized in that: A gear (25) is fixedly provided at the outer end of the rotating shaft (24), and a meshing tooth (21) meshing with the gear (25) is fixedly provided at the outer end of the rotating sleeve (20).

4. The pressure relief device for zinc smelting electric furnace according to claim 1, characterized in that: The components for regulating the internal space of the pressure relief chamber (4) are a sliding frame (6) slidably arranged outside the pressure relief chamber (4), and a component for controlling the horizontal movement of the sliding frame (6); the sliding frame (6) is formed by welding a fan-shaped panel and an arc-shaped panel at 90 degrees.

5. The pressure relief device for zinc smelting electric furnace according to claim 4, characterized in that: The outer end of the pressure relief chamber (4) is located between two adjacent sliding frames (6) and a side baffle (5) is fixedly provided thereon, and an arc-shaped baffle (7) is fixedly provided between the sliding frames (6) located on the same side.

6. The pressure relief device for zinc smelting electric furnace according to claim 5, characterized in that: The components for controlling the horizontal movement of the sliding frame (6) include a sliding sleeve (8) fixedly mounted on the outer end of the arc-shaped baffle (7), a bracket (10) fixedly mounted on the outer end of the electric furnace body (1), two rotating rods (11) rotatably mounted on the inner side of the bracket (10), and a fitting for maintaining the synchronous rotation of the two rotating rods (11).

7. The pressure relief device for zinc smelting electric furnace according to claim 6, characterized in that: The rotary rod (11) passes through the arc-shaped baffle (7), and the sliding sleeve (8) is sleeved on the outside of the rotary rod (11) and is slidably arranged with the rotary rod (11).

8. The pressure relief device for zinc smelting electric furnace according to claim 7, characterized in that: A protrusion (12) is fixedly provided at the outer end of the rotary rod (11), and a spiral slide rail (9) cooperating with the protrusion (12) for sliding is provided inside the sliding sleeve (8).

9. The pressure relief device for zinc smelting electric furnace according to claim 8, characterized in that: The component for keeping the two rotating rods (11) rotating synchronously is a wheel disc (13) rotatably arranged at the outer end of the bracket (10), and a transmission chain (14) for keeping the linkage is sleeved on the outer sides of the two wheel discs (13), and a first motor (15) for controlling the rotation of one of the rotating rods (11) is installed at the outer end of the bracket (10).

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