Mechanical air door structure for automatic temperature regulation of sulfur burning furnace

Abstract

The utility model provides a kind of mechanical air door structure of sulfur furnace temperature automatic regulation, including the mounting seat of fixed connection on furnace wall, the inside sliding connection of mounting seat has air inlet pipe, and air inlet pipe is set as through mounting seat, air inlet pipe is through furnace wall and extends to the inside of furnace wall, the inside fixed connection of air inlet pipe has taper pipe, the narrow mouth of air inlet pipe is integrally formed and is provided with, the narrow mouth end fixed connection of air inlet pipe has invar alloy pipe, the end fixed connection of invar alloy pipe has baffle plate.This scheme realizes the automatic regulation of temperature by using the material characteristics of invar alloy pipe that expands when heated and shrinks when cooled, when the temperature in the furnace rises, the invar alloy pipe expands when heated, pushes the baffle plate and the support rod as a whole to move right, so that the gap between the conical plug and the taper pipe decreases, thereby automatically throttling the air intake, suppressing combustion to reduce temperature, this process does not require external energy and complex control system, realizes rapid regulation.

Description

Technical Field

[0001] This utility model relates to the field of carbonization equipment technology, and more specifically, to a mechanical damper structure for automatic temperature regulation of a sulfur incinerator. Background Technology

[0002] In chemical and metallurgical industries, especially in sulfuric acid production, the sulfur incinerator is a key piece of equipment. Its function is to mix liquid sulfur with combustion air and burn it to produce high-temperature sulfur dioxide process gas. The furnace temperature stability of the sulfur incinerator directly affects the sulfur conversion rate, the safe operating life of the equipment, and the operating conditions of subsequent processes. Too low a temperature leads to incomplete sulfur combustion, resulting in waste and catalyst poisoning; too high a temperature can easily burn the furnace lining refractory material, even causing equipment damage, and may generate byproducts detrimental to the conversion process.

[0003] To achieve temperature stability, the traditional method is to regulate the intake of combustion air. Early control methods relied primarily on manual adjustment of dampers by operators, which was labor-intensive, had slow response times, low control accuracy, and was difficult to adapt to frequent fluctuations in operating conditions. With the development of automation technology, the mainstream control scheme now employs an automatic control system composed of temperature sensors, a controller, and electric or pneumatic actuators. This system uses temperature sensors to monitor the furnace temperature in real time and transmits the signal to the controller. The controller compares the measured value with the set value, performs PID calculations, and outputs a control signal to drive the actuator, thereby adjusting the damper opening.

[0004] However, existing automatic control dampers require a continuous and stable supply of electricity or compressed air. In cases of unstable or sudden power outages, the system will malfunction, posing safety hazards and incurring high operating costs. Therefore, improvements are necessary. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a solution that overcomes or at least partially solves the above technical problems.

[0006] This utility model provides a mechanical damper structure for automatic temperature regulation of a sulfur incinerator, including a mounting base fixedly connected to the furnace wall. An air inlet pipe is slidably connected inside the mounting base and penetrates through the mounting base. The air inlet pipe penetrates the furnace wall and extends to the inner side of the furnace wall. A tapered tube is fixedly connected to the inner side of the air inlet pipe. A narrow opening is integrally formed at the end of the air inlet pipe. An Invar alloy tube is fixedly connected to the end of the narrow opening of the air inlet pipe. A baffle is fixedly connected to the end of the Invar alloy tube. A support rod is fixedly connected to the middle of the side of the baffle near the Invar alloy tube. A conical plug is fixedly connected to the end of the support rod. The conical plug is slidably connected to the inner side of the tapered tube, and a gap is left between the conical plug and the inner wall of the tapered tube.

[0007] In a preferred embodiment, the baffle is fixedly connected to a plurality of vent holes, which are arranged in a ring array along the circumference of the baffle.

[0008] In a preferred embodiment, the inner wall of the intake pipe is fixedly connected to a plurality of fixing rods, the ends of the plurality of fixing rods are jointly fixedly connected to a guide sleeve, and the support rod passes through the guide sleeve and is slidably connected to the guide sleeve.

[0009] In a preferred embodiment, the inner ring wall of the guide sleeve is embedded with balls, which are in contact with the circumferential surface of the support rod.

[0010] In a preferred embodiment, a flow guide plate is fixedly connected to the middle section of the support rod and to the left side of the guide sleeve, and the flow guide plate is frustoconical.

[0011] In a preferred embodiment, a retaining ring is fixedly connected to the outer wall of the intake pipe, the retaining ring being in contact with the end face of the mounting base. Multiple U-shaped blocks are fixedly connected to the outer wall of the retaining ring, and multiple hinge seats are fixedly connected to the outer wall of the mounting base. The number and position of the hinge seats correspond to the U-shaped blocks. A locking rod is hinged to each hinge seat. The middle section of the locking rod is slidably connected to the U-shaped block. A round button is integrally formed at the end of the locking rod. A locking nut is threadedly connected to the outer side of the locking rod. The locking nut abuts against both the U-shaped block and the retaining ring.

[0012] In a preferred embodiment, a positioning pin is fixedly connected to one end of the retaining ring near the mounting base, and the positioning pin is inserted into the mounting base.

[0013] In a preferred embodiment, a sealing ring is embedded in the end face of the mounting base, and the sealing ring abuts against the retaining ring.

[0014] The targeted solution provided by this utility model has the following beneficial effects:

[0015] 1. This solution utilizes the thermal expansion and contraction properties of Invar alloy tubes to achieve automatic temperature regulation. When the furnace temperature rises, the Invar alloy tubes expand due to heat, pushing the baffle and support rod to the right as a whole, which reduces the gap between the conical plug and the conical tube, thereby automatically throttling the air intake and suppressing combustion to lower the temperature. This process does not require external energy or a complex control system, and achieves rapid regulation.

[0016] 2. This solution involves setting an installation base on the furnace wall, with a corresponding retaining ring on the outside of the retaining ring, a U-shaped block on the outer wall of the retaining ring, and a combination of a corresponding locking rod and a locking nut on the installation base. This allows for quick assembly and disassembly of the air inlet pipe, facilitating later inspection and maintenance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model;

[0019] Figure 2 Provided for the embodiments of this utility model Figure 1 A frontal cross-sectional view;

[0020] Figure 3 Provided for the embodiments of this utility model Figure 2 Enlarged view of point A;

[0021] Figure 4 Provided for the embodiments of this utility model Figure 1 Schematic diagram of local structure Figure 1 ;

[0022] Figure 5 Provided for the embodiments of this utility model Figure 1 Schematic diagram of local structure Figure 2 ;

[0023] Figure 6 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the material placement seat structure;

[0024] Figure 7 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the mounting base structure;

[0025] Figure 8 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the baffle structure.

[0026] In the diagram: 1. Furnace wall; 2. Mounting base; 3. Inlet pipe; 4. Conical pipe; 5. Invar alloy pipe; 6. Baffle; 61. Vent hole; 7. Support rod; 8. Conical plug; 9. Fixing rod; 10. Guide sleeve; 11. Ball bearing; 12. Flow guide plate; 13. Retaining ring; 14. Positioning pin; 15. Sealing ring; 16. U-shaped block; 17. Hinge seat; 18. Locking rod; 19. Round button; 20. Locking nut. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Example

[0029] Reference Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 8 This utility model provides a technical solution: a mechanical damper structure for automatic temperature adjustment of a sulfur incinerator, including a mounting base 2 fixedly connected to the furnace wall 1, an air inlet pipe 3 slidably connected inside the mounting base 2, the air inlet pipe 3 penetrating the mounting base 2, the air inlet pipe 3 penetrating the furnace wall 1 and extending to the inner side of the furnace wall 1, a tapered pipe 4 fixedly connected to the inner side of the air inlet pipe 3, a narrow opening integrally formed at the end of the air inlet pipe 3, an Invar alloy pipe 5 fixedly connected to the end of the narrow opening of the air inlet pipe 3, a baffle 6 fixedly connected to the end of the Invar alloy pipe 5, and a plurality of ventilation holes 61 fixedly connected inside the baffle 6, the plurality of ventilation holes 61 being distributed in a ring array along the circumference of the baffle 6. Multiple vent holes 61 are arranged in a plum blossom shape to facilitate air entering the furnace body after passing through the air inlet pipe 3 and the Invar alloy pipe 5. A support rod 7 is fixedly connected to the middle of the side of the baffle 6 near the Invar alloy pipe 5. A conical plug 8 is fixedly connected to the end of the support rod 7. The conical plug 8 is slidably connected to the inner side of the conical pipe 4, and a gap is left between the conical plug 8 and the inner ring wall of the conical pipe 4.

[0030] Reference Figure 3 , Figure 4 , Figure 8 Multiple fixing rods 9 are fixedly connected to the inner wall of the intake pipe 3. A guide sleeve 10 is fixedly connected to the ends of the fixing rods 9. A support rod 7 passes through the guide sleeve 10 and is slidably connected to it. The guide sleeve 10 is fixed by the fixing rods 9 and guides the lateral extension and retraction of the support rod 7. A ball bearing 11 is embedded in the inner wall of the guide sleeve 10, and the ball bearing 11 contacts the circumferential surface of the support rod 7. By providing the ball bearing 11 in the inner wall of the guide sleeve 10, the frictional force when the support rod 7 slides within the guide sleeve 10 can be reduced. A guide plate 12, which is frustum-shaped, is fixedly connected to the middle section of the support rod 7, located on the left side of the guide sleeve 10. The guide plate 12 prevents dust accumulation at the relative sliding point between the guide sleeve 10 and the support rod 7.

[0031] Reference Figure 3, Figure 5 , Figure 6 , Figure 7 A retaining ring 13 is fixedly connected to the outer ring wall of the intake pipe 3. The retaining ring 13 contacts the end face of the mounting base 2. Multiple U-shaped blocks 16 are fixedly connected to the outer ring wall of the retaining ring 13. Multiple hinge seats 17 are fixedly connected to the outer ring wall of the mounting base 2. The number and position of the hinge seats 17 correspond to the U-shaped blocks 16. A locking rod 18 is hinged to each hinge seat 17. The middle section of the locking rod 18 is slidably connected to the U-shaped block 16. A round button 19 is integrally formed at the end of the locking rod 18. A locking nut 20 is threadedly connected to the outside of the locking rod 18. The locking nut 20 abuts against both the U-shaped block 16 and the retaining ring 13. The installation position of the air inlet pipe 3 is initially confirmed by the retaining ring 13, and then locked by the flip-up locking rod 18, U-shaped block 16, and locking nut 20, thereby achieving the purpose of quick installation and removal of the air inlet pipe 3 on the furnace body. A positioning pin 14 is fixedly connected to one end of the retaining ring 13 near the mounting base 2, and the positioning pin 14 is inserted into the mounting base 2. The positioning pin 14 provides secondary positioning for the retaining ring 13 and the air inlet pipe 3. A sealing ring 15 is embedded in the end face of the mounting base 2, and the sealing ring 15 abuts against the retaining ring 13. The sealing ring 15 increases the sealing performance at the installation point of the air inlet pipe 3.

[0032] Operating procedure: First, the mounting base 2 is welded and fixed to the predetermined opening in the sulfur combustion furnace wall 1. Then, the sealing ring 15 is embedded into the end of the mounting base 2. Subsequently, the air inlet pipe 3 is inserted into the mounting base 2, with one end of the air inlet pipe 3 with the Invar alloy tube 5 extending into the furnace body until the retaining ring 13 and the sealing ring 15 are tightly fitted. At this time, the positioning pin 14 is inserted into the corresponding hole of the mounting base 2 to complete the positioning of the installation position. Then, all the locking rods 18 are flipped so that their rods are inserted into the corresponding U-shaped blocks 16. Then, the locking nut 20 is tightened so that it tightly abuts against the U-shaped block 16 and the retaining ring 13, thereby fixing the entire air inlet pipe 3 and the components inside the air inlet pipe 3 onto the mounting base 2. When the temperature inside the furnace rises, the Invar alloy tube 5 expands due to heat, pushing the baffle 6 and the support rod 7 to move to the right as a whole, reducing the gap between the conical plug 8 and the conical tube 4, thereby automatically throttling the air intake and suppressing combustion to reduce the temperature. This process does not require external energy or a complex control system, achieving rapid and sensitive adjustment.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mechanical damper structure for automatic temperature regulation of a sulfur incinerator, comprising a mounting base (2) fixedly connected to the furnace wall (1), characterized in that: An air inlet pipe (3) is slidably connected inside the mounting base (2), and the air inlet pipe (3) is set through the mounting base (2). The air inlet pipe (3) passes through the furnace wall (1) and extends to the inner side of the furnace wall (1). A conical pipe (4) is fixedly connected to the inner side of the air inlet pipe (3). A narrow opening is integrally formed at the end of the air inlet pipe (3). An Invar alloy pipe (5) is fixedly connected to the end of the narrow opening of the air inlet pipe (3). A baffle (6) is fixedly connected to the end of the baffle (6) near the middle of the side of the Invar alloy pipe (5). A support rod (7) is fixedly connected to the end of the support rod (7). A conical plug (8) is fixedly connected to the end of the support rod (7). The conical plug (8) is slidably connected to the inner side of the conical pipe (4), and a gap is left between the conical plug (8) and the inner ring wall of the conical pipe (4).

2. The mechanical damper structure for automatic temperature regulation of a sulfur incinerator according to claim 1, characterized in that: The baffle (6) has multiple vent holes (61) fixedly connected inside, and the multiple vent holes (61) are arranged in a ring array along the circumference of the baffle (6).

3. The mechanical damper structure for automatic temperature regulation of a sulfur incinerator according to claim 2, characterized in that: The inner wall of the air intake pipe (3) is fixedly connected with a plurality of fixing rods (9), and the ends of the plurality of fixing rods (9) are fixedly connected with a guide sleeve (10). The support rod (7) passes through the guide sleeve (10) and is slidably connected to the guide sleeve (10).

4. The mechanical damper structure for automatic temperature regulation of a sulfur incinerator according to claim 3, characterized in that: The inner ring wall of the guide sleeve (10) is embedded with a ball (11), which is in contact with the circumferential surface of the support rod (7).

5. The mechanical damper structure for automatic temperature regulation of a sulfur incinerator according to claim 3, characterized in that: The middle section of the support rod (7) and the left side of the guide sleeve (10) are fixedly connected to a guide plate (12), which is frustum-shaped.

6. The mechanical damper structure for automatic temperature regulation of a sulfur incinerator according to claim 1, characterized in that: The outer ring wall of the air intake pipe (3) is fixedly connected to a retaining ring (13). The retaining ring (13) contacts the end face of the mounting base (2). The outer ring wall of the retaining ring (13) is fixedly connected to multiple U-shaped blocks (16). The outer ring wall of the mounting base (2) is fixedly connected to multiple hinge seats (17). The number and position of the hinge seats (17) correspond to the U-shaped blocks (16). Each hinge seat (17) is hinged to a locking rod (18). The middle section of the locking rod (18) is slidably connected to the U-shaped block (16). The end of the locking rod (18) is integrally formed with a round button (19). The outer side of the locking rod (18) is connected to a locking nut (20) by a thread. The locking nut (20) abuts against both the U-shaped block (16) and the retaining ring (13).

7. The mechanical damper structure for automatic temperature regulation of a sulfur incinerator according to claim 6, characterized in that: The retaining ring (13) is fixedly connected to a positioning pin (14) at one end near the mounting base (2), and the positioning pin (14) is inserted into the mounting base (2).

8. The mechanical damper structure for automatic temperature regulation of a sulfur incinerator according to claim 6, characterized in that: A sealing ring (15) is embedded in the end face of the mounting base (2), and the sealing ring (15) abuts against the retaining ring (13).

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