An automatic control device for oxygen-free lead discharge in a lead smelting furnace

Abstract

An oxygen-free lead discharge automatic control device for a lead smelting furnace belongs to a lead discharge device for a lead smelting furnace. The lead discharge controller of the oxygen-free lead discharge automatic control device is installed near the lead discharge hole of the lead discharge chute of the lead smelting furnace; the oxygen-free lead discharge device is installed at the lead discharge outlet of the lead discharge chute of the lead smelting furnace; the plunger base of the lead discharge controller has supports at both ends, and the plunger is installed on the supports at both ends, and a reduction drive is provided at one end of the plunger base, and the reduction drive drives the plunger to perform telescopic movement; one end of the lead discharge chute of the oxygen-free lead discharge device is connected to the lead discharge outlet of the smelting furnace, the lead discharge sleeve valve is connected to the lead discharge chute through a fixed limit ring, the lead discharge sleeve valve is connected to the lead discharge sleeve valve lifting rod, and the lead discharge sleeve valve is sleeved on the outside of the lead discharge pipe; the lead discharge pipe has a lead inlet hole and a lead outlet hole, and the lead discharge pipe is connected to the elevator. Advantages: the lead discharge hole is blocked by a plunger to realize the working state of lead discharge on demand; oxygen-free lead discharge reduces the harm of harmful gases to the human body during lead discharge and protects the environment.

Description

Technical Field

[0001] The invention relates to a lead discharging device for a lead smelting furnace, in particular to an automatic control device for discharging lead without oxygen in a lead smelting furnace. Background Art

[0002] After the smelting process of the lead smelting furnace is completed, the slag and lead need to be discharged. Usually, the lead discharge port is located at the lower part of one side of the smelting furnace. The traditional operation method is to use a sledgehammer to drive the wedge-shaped plugging wood into the lead discharge port and tighten it before adding materials in each shift, and seal it with yellow mud to prevent the lead from running away after the plugging wood is burned; after adding materials and smelting, slag and lead are discharged. When discharging lead, use a steel chisel to pry out the yellow mud and the tail of the wooden stick, and then use a sledgehammer to drive the steel chisel into the lead discharge pipe to discharge lead until the lead liquid in the furnace (leaving a certain amount of bottom lead) is discharged at one time. Only then can the plugging wood and yellow mud be used to tie up the lead discharge port and end the lead discharge. With this method, the wooden stick is often not tied tightly and the lead runs away; sometimes the lead discharge pipe is completely blocked by condensed solid lead, and the steel chisel cannot penetrate. It is necessary to use an oxygen flame to burn the mouth through the steel pipe manually, burn the solid lead in the lead discharge pipe at high temperature, or use a special puncher to dredge the solid lead in the lead discharge pipe. The above operations are all carried out in a high temperature environment, which makes the operation difficult and labor-intensive for the operators, and is prone to production safety accidents.

[0003] At the same time, high-temperature molten lead flows directly into the lead bag or lead pot through the lead chute. The temperature of the molten lead is generally above 800°C. During the entire process of lead release, the flowing molten lead is exposed to the air. The high-temperature liquid lead is easily oxidized to form slag in the air and produces a large amount of lead smoke, which endangers the health of the operators and causes environmental pollution. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic control device for oxygen-free lead discharge in a lead smelting furnace, which is simple in structure, easy to operate and reliable in operation, so as to solve the problems of high labor intensity, difficult control of lead discharge amount, oxidation of lead liquid to form slag and generation of a large amount of lead smoke to pollute the environment and high safety hazards in the lead discharge process.

[0005] The object of the present invention is achieved as follows: the oxygen-free lead discharge automatic control device comprises: a lead discharge controller and an oxygen-free lead discharge device; the lead discharge controller is installed at a position near a lead discharge hole of a lead discharge chute of a lead smelting furnace; and the oxygen-free lead discharge device is installed at a position of a lead discharge port of a lead discharge chute of a lead smelting furnace.

[0006] The lead discharging controller comprises: a plunger, a plunger base and a reduction drive; the plunger base has supports at both ends, the plunger is installed through the supports at both ends, and one end of the plunger base has a reduction drive, which drives the plunger to perform telescopic movement.

[0007] The oxygen-free lead discharge device comprises: a lead discharge chute, a lead discharge pipe, a fixed limit retaining ring, a lead discharge sleeve valve, a lead discharge sleeve valve lifting rod, an elevator, a lead inlet hole, a lead outlet hole and a lifting rod support; one end of the lead discharge chute is connected to the lead discharge port of the smelting furnace, the lead discharge sleeve valve is connected to the lead discharge chute through a fixed limit ring, the lead discharge sleeve valve is connected to the lead discharge sleeve valve lifting rod, and the lead discharge sleeve valve is sleeved on the outside of the lead discharge pipe; the lead discharge pipe is provided with a lead inlet hole and a lead outlet hole, and the lead discharge pipe is connected to the elevator.

[0008] The plunger comprises: a guide column, a lead hole plug, a connecting rod and a screw rod; one end of the connecting rod is connected to the screw rod, and the other end is connected to the rear end of the lead hole plug, and the front end of the lead hole plug is connected to the guide column; the reduction drive drives the screw rod to rotate and pushes the lead hole plug forward or backward.

[0009] The guide column is a cylinder; or a conical truncated cone; the guide column is hollow; or a solid core;

[0010] The lead hole plug is a semi-sphere or a cone, the diameter of which is larger than the inner diameter of the lead hole, and the shape of the lead hole plug is consistent with the lead hole opening.

[0011] The plunger base comprises: a connecting rod sleeve, a bracket, a rotating shaft seat and a rotating shaft;

[0012] The connecting rod of the plunger passes through the connecting rod sleeve and the rotating shaft seat, and can rotate with the connecting rod sleeve and the rotating shaft seat as a fulcrum;

[0013] The connecting rod sleeve is connected to one end of the plunger base, and the other end of the plunger base is connected to a rotating shaft seat; a rotating shaft is connected to both sides of the rotating shaft seat, and the rotating shaft is fixedly installed on the upper end of the side wall of the lead chute through a bracket, and rotates on the rotating shaft seat with the rotating shaft as a fulcrum; a reduction drive is connected to the rear wall of the rotating shaft seat;

[0014] The deceleration driver comprises: a motor and a reducer, the output shaft of the motor is connected to the input shaft of the reducer, and directly drives the lead rod to operate, so as to open and close the lead hole and the lead hole plug.

[0015] The lead placing pipe is made of high temperature resistant stainless steel pipe; the upper end of the lead placing pipe is connected with a lifter; a lead inlet hole boss is provided in the middle of the lead placing pipe, and a lead inlet hole is provided on the lead inlet hole boss; the lead outlet hole is located at the bottom of the lead placing pipe, and the lead outlet hole is located at the bottom of the lead bag when the lead is placed, and after the lead is placed, the lead outlet hole is raised above the upper opening of the lead bag.

[0016] The lead-discharging chute is provided with a steel shell on the outside and a refractory material lining on the inside; a guide hole for a lead-discharging pipe is arranged at the bottom, and the guide hole is sealed corresponding to the bottom of the lead-inlet hole boss, and is used to block the lead liquid in the lead-discharging chute when discharging lead, so as to ensure that the lead liquid can only flow into the lead-discharging pipe through the lead-inlet hole, and the lead discharging is implemented by discharging lead; a sealing ring is connected to the guide hole, and the inner hole diameter of the sealing ring is larger than the guide hole diameter.

[0017] The number of the fixed limiting rings is greater than 2 and they are located in the lead-discharging chute, one end of which is sleeved on the outside of the lead-discharging sleeve valve and the other end of which is fixed on the lead-discharging chute.

[0018] The lead-discharging sleeve valve is made of high-temperature resistant stainless steel and is located in the lead-discharging chute. The lead-discharging sleeve valve is higher than the lead-discharging chute, and the top end is connected to the lead-discharging sleeve valve lifting rod; the lead-discharging sleeve valve lifting rod is connected to the lead-discharging chute through a lifting rod support; the bottom of the lead-discharging sleeve valve is a conical mouth, which is located on the sealing ring at the bottom of the lead-discharging chute and is sealed correspondingly with the sealing ring to block the lead liquid in the lead-discharging chute from flowing out.

[0019] Beneficial effect: Due to the adoption of the above scheme, before charging the smelting furnace in each shift, the reduction motor is turned on, and the lead discharge hole of the smelting furnace is sealed by driving the lead discharge hole plug through the screw rod. When the specified position of sealing the lead discharge hole is reached, the reduction motor stops running under the control of the lower limit switch, thereby ensuring that the lead discharge hole is well sealed; when the charge is melted by the high-temperature reduction reaction to meet the lead discharge requirement, the reduction motor is turned on to loosen the screw rod in the reverse direction, and the guide column is slowly lifted. When the lead discharge hole is fully opened, the reduction motor stops running under the control of the upper limit switch, and the lead liquid flows out of the lead discharge hole along the guide column, and flows out through the lead discharge port to the lead discharge chute for lead discharge.

[0020] It is possible to realize or stop lead discharge in the middle of lead discharge, which completely changes the past that once the lead discharge hole is opened, the lead discharge process cannot be stopped and a pot of lead must be discharged. The lead discharge process can be effectively controlled and lead discharge can be implemented as needed.

[0021] The guide column has a heat storage function. Even if solid lead condenses in the lead hole, the heat stored in the guide column can melt the solid lead and keep the lead hole conductive. There is no need for manual unblocking, which greatly reduces the labor intensity of workers and prevents the occurrence of production safety accidents caused by unblocking the lead hole.

[0022] During the lead discharge process, the lead liquid level in the lead chute is always kept consistent with the lead liquid level in the smelting furnace, and a stable oxide protective film is formed on the surface of the lead liquid, which avoids the contact between the flowing lead liquid and the air. At the same time, the lead liquid enters the lead bag from the lead outlet hole at the bottom of the lead discharge pipe. As the lead liquid rises, the lead outlet hole is immersed in the lead liquid, and the lead liquid in the lead bag rises steadily, which avoids the oxidation and slag formation of the lead liquid to the greatest extent, improves the product quality, reduces the harm of harmful gases such as lead smoke to the human body during the lead discharge process, and protects the environment. The problem of high labor intensity, difficult control of the lead discharge amount, oxidation and slag formation of the lead liquid and the generation of a large amount of lead smoke to pollute the environment, and high safety hazards in the lead discharge process is solved, and the purpose of the present invention is achieved.

[0023] Advantages: The device uses a plunger to seal the lead discharge hole, a guide column to drain the lead liquid, and the lead discharge hole is immersed in the lead liquid. During the production process, it is realized that the lead discharge is smooth when it is needed and there is no leakage when it is blocked. It can reduce the contact between high-temperature lead liquid and air, avoid oxidation and slagging of lead liquid, improve product quality, reduce the harm of harmful gases such as lead smoke to the human body during the lead discharge process, and protect the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the lead discharging controller of the present invention in a state where the lead discharging hole is not blocked.

[0026] Figure 3 It is a structural schematic diagram of a state in which the lead discharging controller of the present invention blocks the lead discharging hole.

[0027] Figure 4 It is a schematic structural diagram of the anaerobic lead-discharging device of the present invention in a non-lead-discharging state.

[0028] Figure 5 It is a schematic structural diagram of the lead-discharging state of the anaerobic lead-discharging device of the present invention.

[0029] In the figure, 1. Lead discharge controller; 2. Anaerobic lead discharge device.

[0030] 1-1, guide column; 1-2, lead hole plug; 1-3, connecting rod; 1-4, connecting rod sleeve; 1-5, plunger base; 1-6, bracket; 1-7, shaft seat; 1-8, screw rod; 1-9, reduction drive; 1-10, shaft; 1-11, smelting furnace; 1-12, lead hole.

[0031] 2-1. Lead discharge chute; 2-2. Lead discharge pipe; 2-3. Lead discharge sleeve valve; 2-4. Lead inlet hole; 2-5. Lead outlet hole; 2-6. Fixed limit retaining ring; 2-7. Lead discharge sleeve valve lifting rod; 2-8. Elevator; 2-9. Lead bag; 2-10. Lifting rod support; 2-11. Sealing ring. DETAILED DESCRIPTION

[0032] Embodiment 1: The oxygen-free lead discharge automatic control device of the present invention is installed on the lead discharge chute 2-1; there is a lead discharge hole 1-12 at the lower end of the smelting furnace, and the lead discharge chute 2-1 is arranged outside the lead discharge hole 1-12. The outer wall of the lead discharge chute 2-1 has an outer shell, and the inner wall of the outer shell is lined with refractory bricks; the angle between the lead discharge hole 1-12 and the lead discharge chute 2-1 is 20-40 degrees.

[0033] The oxygen-free lead discharge automatic control device comprises: a lead discharge controller 1 and an oxygen-free lead discharge device 2; the lead discharge controller 1 is installed at a position near a lead discharge hole 12 of a lead discharge chute of a lead smelting furnace; and the oxygen-free lead discharge device 2 is installed at a lead discharge port position of the lead discharge chute of the lead smelting furnace.

[0034] The lead discharging controller 1 comprises: a plunger, a plunger base 1-5 and a reduction drive 1-9; the plunger base 1-5 has supports at both ends, the plunger is installed through the supports at both ends, and a reduction drive 1-9 is provided at one end of the plunger base 1-5, and the reduction drive 1-9 drives the plunger to perform telescopic movement.

[0035] The plunger includes: a guide column 1-1, a lead hole plug 1-2, a connecting rod 1-3 and a screw rod 1-8; one end of the connecting rod 1-3 is connected to the screw rod 1-8, and the other end is connected to the rear end of the lead hole plug 1-2, and the front end of the lead hole plug 1-2 is connected to the guide column 1-1; the reduction drive 1-9 drives the screw rod 1-8 to rotate and push the lead hole plug 1-2 forward or backward.

[0036] The guide column 1-1 is a cylinder; or a conical cone; the guide column 1-1 is hollow; or a solid.

[0037] The lead hole plug 1-2 is a semi-sphere or a cone, and its diameter is larger than the inner diameter of the lead hole 1-12. The shape of the lead hole plug 1-2 is consistent with the mouth of the lead hole 1-12.

[0038] The plunger base 1-5 comprises: a connecting rod sleeve 1-4, a bracket 1-6, a rotating shaft seat 1-7 and a rotating shaft 1-10;

[0039] The connecting rod 1-3 of the plunger passes through the connecting rod sleeve 1-4 and the rotating shaft seat 1-7, and can rotate with the connecting rod sleeve 1-4 and the rotating shaft seat 1-7 as a fulcrum;

[0040] The connecting rod sleeve 1-4 is connected to one end of the plunger base 1-5, and the other end of the plunger base 1-5 is connected to a rotating shaft seat 1-7; a rotating shaft 1-10 is connected to both sides of the rotating shaft seat 1-7, and the rotating shaft 1-10 is fixedly installed on the upper end of the side wall of the lead chute 2-1 through a bracket 1-6, and rotates on the rotating shaft seat 1-7 with the rotating shaft 1-10 as a fulcrum; a reduction drive 1-9 is connected to the rear wall of the rotating shaft seat 1-7.

[0041] The deceleration driver 9 comprises: a motor and a reducer, the output shaft of the motor is connected to the input shaft of the reducer, and directly drives the screw rod to operate, so as to open and close the lead hole and the lead hole plug.

[0042] The oxygen-free lead discharge device comprises: a lead discharge chute 2-1, a lead discharge pipe 2-2, a fixed limit retaining ring 2-6, a lead discharge sleeve valve 2-3, a lead discharge sleeve valve lifting rod 2-7, an elevator 2-8, a lead inlet hole 2-4, a lead outlet hole 2-5 and a lifting rod support 2-10; one end of the lead discharge chute 2-1 is connected to the lead discharge port of the smelting furnace, the lead discharge sleeve valve 2-3 is connected to the lead discharge chute 2-1 through the fixed limit ring 2-6, the lead discharge sleeve valve 2-3 is connected to the lead discharge sleeve valve lifting rod 2-7, and the lead discharge sleeve valve 2-3 is sleeved on the outside of the lead discharge pipe 2-2; the lead discharge pipe 2-2 is provided with a lead inlet hole 2-4 and a lead outlet hole 2-5, and the lead discharge pipe 2-2 is connected to the elevator 2-8.

[0043] The lead placing tube 2-2 is made of high temperature resistant stainless steel tube; the upper end of the lead placing tube 2-2 is connected to the elevator 2-8; there is a lead inlet hole boss in the middle of the lead placing tube 2-2, and there is a lead inlet hole 2-4 on the lead inlet hole boss; the lead outlet hole 2-5 is located at the bottom of the lead placing tube 2-2, and the lead outlet hole 2-5 is located at the bottom of the lead bag 2-9 when the lead is placed. After the lead is placed, the lead outlet hole 2-5 is raised above the upper mouth of the lead bag 2-9.

[0044] The lead-discharging chute 2-1 is provided with a steel shell on the outside and a refractory material lining on the inside; a guide hole for a lead-discharging pipe 2-2 is arranged at the bottom, and the guide hole is sealed corresponding to the bottom of the lead inlet hole boss, and is used to block the lead liquid in the lead-discharging chute 2-1 when discharging lead, so as to ensure that the lead liquid can only flow into the lead-discharging pipe 2-2 through the lead inlet hole 2-4, and the lead is discharged through the lead-discharging pipe 2-2; a sealing ring 2-11 is connected to the guide hole, and the inner hole diameter of the sealing ring 2-11 is larger than the guide hole diameter.

[0045] The fixed limiting rings 2-6 are greater than two and are located in the lead-discharging chute 2-1, with one end sleeved on the outside of the lead-discharging sleeve valve 2-3 and the other end fixed on the lead-discharging chute 2-1.

[0046] The lead-discharging sleeve valve 2-3 is made of high-temperature resistant stainless steel and is located in the lead-discharging chute 2-1. The lead-discharging sleeve valve 2-3 is higher than the lead-discharging chute 2-1, and the top end is connected to the lead-discharging sleeve valve lifting rod 2-7; the lead-discharging sleeve valve lifting rod 2-7 is connected to the lead-discharging chute 2-1 through the lifting rod support 2-10; the bottom of the lead-discharging sleeve valve 2-3 is a conical mouth, which is located on the sealing ring 2-11 at the bottom of the lead-discharging chute 2-1, and is sealed corresponding to the sealing ring 2-11, so as to block the lead liquid in the lead-discharging chute 2-1 from flowing out.

[0047] After the smelting process of the lead smelting furnace is completed, before releasing the lead, the lead release sleeve valve 2-3 is closed by the lead release sleeve valve lifting rod 2-7, and the lead bag 2-9 is placed at the bottom of the lead release pipe 2-2. Figure 4As shown, the lead discharge port of the smelting furnace is opened, and the molten lead enters the lead discharge chute 2-1. When the molten lead reaches 1 / 2-2 / 3 of the height of the lead discharge chute, the lead inlet hole 2-4 of the lead discharge pipe is lowered to the bottom plate of the casing valve with the help of the elevator 2-8, and the lead discharge casing valve 2-3 is opened. Figure 5 As shown, the lead liquid flows into the lead discharge pipe 2-2 through the lead inlet hole 2-4, and flows into the lead bag 2-9 through the lead discharge pipe 2-2. When the lead bag is full, the lead discharge sleeve valve 2-3 is closed, the lead discharge pipe 2-2 is lifted, and the lead bag 2-9 is removed. The lead discharge process is completed. If lead discharge is required, repeat the above operation.

[0048] During the lead discharge process, the lead liquid level in the lead discharge chute 2-1 is always kept consistent with the lead liquid level in the smelting furnace, and a stable oxide protective film is formed on the surface of the lead liquid, which prevents the flowing lead liquid from contacting with the air. At the same time, the lead liquid enters the lead bag 2-9 from the lead outlet 2-5 at the bottom of the lead discharge pipe 2-2. As the lead liquid rises, the lead outlet is immersed in the lead liquid, and the lead liquid in the lead bag rises steadily, which avoids the oxidation and slagging of the lead liquid to the greatest extent, improves the product quality, reduces the harm of harmful gases such as lead smoke to the human body during the lead discharge process, and protects the environment.

[0049] The above is only the best example of the present invention. It should be pointed out that for ordinary technicians in this field, under the technical enlightenment provided by the present invention, other improvements or changes can be made, all of which can achieve the purpose of the present invention and should be regarded as the protection scope of the present invention.

Claims

1. An automatic control device for oxygen-free lead discharge in a lead smelting furnace, characterized in that: The oxygen-free lead discharge automatic control device comprises: a lead discharge controller and an oxygen-free lead discharge device; the lead discharge controller is installed at the lead discharge hole position of the lead discharge chute of the lead smelting furnace; the oxygen-free lead discharge device is installed at the lead discharge hole position of the lead discharge chute of the lead smelting furnace; The lead discharging controller comprises: a plunger, a plunger base and a deceleration driver; the plunger base has supports at both ends, the plunger is installed through the supports at both ends, and a deceleration driver is provided at one end of the plunger base, and the deceleration driver drives the plunger to perform telescopic movement; The oxygen-free lead discharge device comprises: a lead discharge chute, a lead discharge pipe, a fixed limit retaining ring, a lead discharge sleeve valve, a lead discharge sleeve valve lifting rod, a lifter, a lead inlet hole, a lead outlet hole and a lifting rod support; one end of the lead discharge chute is connected to the lead discharge port of the smelting furnace, the lead discharge sleeve valve is connected to the lead discharge chute through the fixed limit retaining ring, the lead discharge sleeve valve is connected to the lead discharge sleeve valve lifting rod, and the lead discharge sleeve valve is sleeved outside the lead discharge pipe; the lead discharge pipe is provided with a lead inlet hole and a lead outlet hole, and the lead discharge pipe is connected to the lifter; The plunger comprises: a guide column, a lead hole plug, a connecting rod and a screw rod; one end of the connecting rod is connected to the screw rod, and the other end is connected to the rear end of the lead hole plug, and the front end of the lead hole plug is connected to the guide column; the reduction drive drives the screw rod to rotate and pushes the lead hole plug forward or backward; The plunger base comprises: a connecting rod sleeve, a bracket, a rotating shaft seat and a rotating shaft; The connecting rod of the plunger penetrates the connecting rod sleeve and the rotating shaft seat, and can rotate with the connecting rod sleeve and the rotating shaft seat as a fulcrum; The connecting rod sleeve is connected to one end of the plunger base, and the other end of the plunger base is connected to a rotating shaft seat; a rotating shaft is connected to both sides of the rotating shaft seat, and the rotating shaft is fixedly installed on the upper end of the side wall of the lead chute through a bracket, and rotates on the rotating shaft seat with the rotating shaft as a fulcrum; a reduction drive is connected to the rear wall of the rotating shaft seat; The deceleration driver comprises: a motor and a reducer, the output shaft of the motor is connected to the input shaft of the reducer, directly driving the screw rod to operate, and opening and closing the lead hole and the lead hole plug; Before charging the smelting furnace in each shift, the motor is turned on and the lead hole plug is driven by the screw rod to seal the lead hole of the smelting furnace. When the specified position of sealing the lead hole is reached, the motor stops running under the control of the lower limit switch, ensuring that the lead hole is well sealed. When the charge is melted by the high-temperature reduction reaction and meets the lead release requirements, the motor is turned on to loosen the screw rod in the reverse direction and slowly lift the guide column. When the lead release hole is fully opened, the motor stops running under the control of the upper limit switch, and the lead liquid flows out of the lead release hole along the guide column and flows out through the lead release port to the lead release chute for lead release.

2. The automatic control device for oxygen-free lead discharge in a lead smelting furnace according to claim 1, characterized in that: The guide column is a cylinder; or a conical truncated cone; the guide column is hollow; or a solid core; The lead hole plug is a semi-sphere or a cone, the diameter of which is larger than the inner diameter of the lead hole, and the shape of the lead hole plug is consistent with the lead hole opening.

3. The automatic control device for oxygen-free lead discharge in a lead smelting furnace according to claim 1, characterized in that: The lead placing pipe is made of high temperature resistant stainless steel pipe; the upper end of the lead placing pipe is connected with a lifter; a lead inlet hole boss is provided in the middle of the lead placing pipe, and a lead inlet hole is provided on the lead inlet hole boss; the lead outlet hole is located at the bottom of the lead placing pipe, and the lead outlet hole is located at the bottom of the lead bag when the lead is placed, and after the lead is placed, the lead outlet hole is raised above the upper opening of the lead bag.

4. The automatic control device for oxygen-free lead discharge in a lead smelting furnace according to claim 1, characterized in that: The lead-discharging chute is provided with a steel shell on the outside and a refractory material lining on the inside; a guide hole for a lead-discharging pipe is arranged at the bottom, and the guide hole is sealed corresponding to the bottom of the lead-inlet hole boss, so as to block the lead liquid in the lead-discharging chute when discharging lead, and ensure that the lead liquid can only flow into the lead-discharging pipe through the lead-inlet hole, and the lead is discharged through the lead-discharging pipe; a sealing ring is connected to the guide hole, and the inner hole diameter of the sealing ring is larger than the guide hole diameter.

5. The automatic control device for oxygen-free lead discharge in a lead smelting furnace according to claim 1, characterized in that: The number of the fixed limit retaining rings is greater than 2 and they are located in the lead discharge chute, one end of which is sleeved on the outside of the lead discharge sleeve valve and the other end is fixed on the lead discharge chute.

6. The automatic control device for oxygen-free lead discharge in a lead smelting furnace according to claim 1, characterized in that: The lead-discharging sleeve valve is made of high-temperature resistant stainless steel and is located in the lead-discharging chute. The lead-discharging sleeve valve is higher than the lead-discharging chute, and the top end is connected to the lead-discharging sleeve valve lifting rod; the lead-discharging sleeve valve lifting rod is connected to the lead-discharging chute through a lifting rod support; the bottom of the lead-discharging sleeve valve is a conical mouth, which is located on the sealing ring at the bottom of the lead-discharging chute and is sealed correspondingly with the sealing ring to block the lead liquid in the lead-discharging chute from flowing out.

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