Self-pressure-releasing type waste heat recycling device for carbon black production

Abstract

The utility model discloses a kind of self pressure-relief type waste heat recovery and utilization devices for carbon black production, it is related to carbon black production technical field, including processing box, the bottom end of processing box is equipped with air inlet pipe, and the inside of processing box is provided with water delivery pipeline, the left and right sides of water delivery pipeline are all connected with water inlet;The upper end in the inside of processing box is provided with exhaust mechanism for automatic pressure relief, exhaust mechanism is moved upward by its contained propulsion plate due to air pressure simultaneously push piston block sliding to realize pressure relief exhaust.This self pressure-relief type waste heat recovery and utilization device for carbon black production, by hot gas increase, the increase of air pressure will promote propulsion plate to move upward, propulsion plate is separated between fixed block, due to the upward movement of propulsion plate, piston block is synchronously slid in the inside of exhaust port, gas will be discharged from the gap between piston block and the upper end of the inside of exhaust port, to avoid excessive high heat gas accumulation residual in the inside of processing box, realize the automatic discharge of gas.

Description

Technical Field

[0001] This utility model relates to the field of carbon black production technology, specifically to a self-relief waste heat recovery and utilization device for carbon black production. Background Technology

[0002] Carbon black production requires maintaining a high-temperature environment of 1200-1500℃ inside the reactor, resulting in high fuel consumption and energy costs accounting for 30% to 50% of the total production cost. The high-temperature flue gas discharged from the reactor and the steam generated during the rapid cooling process contain a large amount of heat energy, and direct discharge would result in huge waste. Therefore, waste heat recovery and utilization devices are needed to recover heat and reduce resource waste. However, in the process of using traditional waste heat recovery and utilization devices, the continuous introduction of heat may cause an increase in internal pressure, which could lead to subsequent safety accidents.

[0003] To overcome the above-mentioned defects, the existing technology (Chinese patent with announcement number CN217464374U, announcement date 2022-09-20) provides a waste heat recovery and utilization device for carbon black production, including a shell. A flue gas inlet and outlet are respectively provided on the left and right sides of the shell. A steam drum is provided above the shell, and a steam pipeline is provided at the top of the steam drum. A coil is provided inside the shell, and the coil is fixedly connected to the inner wall of the shell by flat steel. A water inlet pipe and a sewage outlet pipe are provided at the bottom of the coil, penetrating the shell. A water inlet valve is provided on the water inlet pipe, and a sewage outlet valve is provided on the sewage outlet pipe. An exhaust pipe is provided at the top of the coil, and the exhaust pipe is connected to the steam drum. Heat is recovered from the high-temperature flue gas through heat exchange, avoiding energy waste. Furthermore, the generated steam is used to supply the production line, reducing the amount of purchased steam and lowering production costs.

[0004] The aforementioned mechanism uses a pressure relief valve to release pressure and exhaust gas. However, in actual use, heat continues to be introduced into the device during pressure relief. Under such circumstances, the pressure relief efficiency may be insufficient, which may lead to safety accidents in the future. Utility Model Content

[0005] The purpose of this utility model is to provide a self-relieving waste heat recovery and utilization device for carbon black production, so as to solve the problem mentioned in the background art that when heat enters, the internal pressure of the recovery device may increase due to the continuous introduction of heat, which may lead to subsequent safety accidents.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-relief waste heat recovery and utilization device for carbon black production, comprising a processing box, an air inlet pipe at the bottom of the processing box, and a water supply pipe inside the processing box, with water inlets connected to both the left and right sides of the water supply pipe; an exhaust mechanism for automatic pressure relief is provided at the upper end of the processing box, the exhaust mechanism releases pressure and exhausts air by having a push plate move upward due to air pressure and simultaneously push a piston block to slide; a docking mechanism is provided at the lower end of the outer side of the air inlet pipe, the docking mechanism is compressed by a first air bladder and transports the gas into the second air bladder, thereby sealing the side of the air inlet pipe.

[0007] Furthermore, the exhaust mechanism includes a push plate, which is slidably connected to the upper part of the inside of the processing box. A fixing block is fixedly connected to the top of the inside of the processing box, and the bottom end of the fixing block is located at the middle position of the push plate. Exhaust ports are provided at the four corners of the top of the processing box, and piston blocks are slidably connected inside the exhaust ports. A limit rod is fixedly connected to the bottom end of the piston block, and the bottom end of the limit rod is connected to the top of the push plate.

[0008] Furthermore, a connecting spring is wound around the lower end of the outer side of the limiting rod, and the top end of the connecting spring is connected to the top end inside the processing box. The bottom end of the connecting spring is connected to the top end of the push plate, and the processing box and the push plate form an elastic structure through the elastic force of the connecting spring.

[0009] Furthermore, a sealing layer is provided on the outer side of the fixing block, and the outer side of the sealing layer is in contact with the inner side of the push plate.

[0010] Furthermore, wire pieces are provided on the left side of the top of the push plate and the top of the inside of the processing box, electromagnets are provided on the right side of the top of the push plate and the top of the inside of the processing box, and a solenoid valve is provided inside the air intake pipe.

[0011] Furthermore, the docking mechanism includes an installation box, which is located on the outside of the air intake pipe. A first airbag is located at the top of the inside of the installation box, and a compression plate is located at the bottom of the first airbag. The compression plate is slidably connected to the installation box, and a second airbag is located at the bottom of the compression plate. The inner side of the second airbag is in contact with the outer side of the docking pipe. The first airbag and the second airbag are connected by a hose. A docking plate is located at the bottom of the installation box and the outer side of the docking pipe.

[0012] Furthermore, a reset spring is provided inside the mounting box, and the top of the compression plate is connected to the reset spring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. As the heat increases, the air pressure increases, which pushes the pusher plate upward. The pusher plate separates from the fixed block, and the gas is discharged through the reserved opening in the middle of the pusher plate and enters the upper part of the processing box. Due to the upward movement of the pusher plate, the piston block slides synchronously inside the exhaust port. The diameter of the upper end of the exhaust port is larger than the diameter of the piston block. Therefore, when the piston block moves upward, the gas will be discharged from the gap between the piston block and the upper end of the exhaust port, thereby avoiding the accumulation of too much high-heat gas inside the processing box and realizing the automatic discharge of gas.

[0015] Furthermore, a connecting spring is wound around the outside of the limiting rod. The elastic force of the connecting spring can assist the limiting rod in resetting its position, so that the piston block can be reset synchronously inside the exhaust port, thus preventing the gas from always being in a state of leakage.

[0016] Furthermore, after the electromagnet and the magnet are attracted to each other, the wire segments come into contact with each other, realizing circuit control. The solenoid valve changes its opening and closing state. When the wire segments are in contact, the solenoid valve is in the closed state, stopping the flow of hot air into the processing box. This allows the hot air inside the processing box to be discharged through the exhaust port before ventilation resumes, reducing the occurrence of safety accidents. The electromagnet works immediately after being energized. When the control signal is disconnected, the time relay keeps the electromagnet energized for a period of time before de-energizing it. By using the delayed de-energization, the processing box can maintain stable pressure relief for a period of time.

[0017] 2. By connecting the intake pipe and the connecting pipe, the top of the connecting pipe is attached to the lower surface of the extrusion plate, so that the top of the connecting pipe pushes the extrusion plate upward. The extrusion plate simultaneously extrudes the first airbag. The gas inside the first airbag is delivered to the inside of the second airbag through the hose, causing the second airbag to expand and fill the space between the side of the connecting pipe and the inside of the mounting box. This results in the side of the connecting pipe being squeezed and wrapped, reducing the gap between the intake pipe and the connecting pipe.

[0018] Furthermore, the second airbag can help retain heat, reduce heat loss, and improve the heat retention effect when the air intake pipe and connecting pipe are delivering hot air. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2 This is a frontal sectional view of the present invention.

[0021] Figure 3 This is a schematic diagram of the exhaust mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the docking mechanism of this utility model;

[0023] Figure 5 This is a cross-sectional view of the exhaust mechanism of this utility model;

[0024] Figure 6 This is an exploded structural diagram of the exhaust mechanism of this utility model.

[0025] In the diagram: 1. Processing box; 2. Air inlet pipe; 3. Connecting pipe; 4. Water inlet; 5. Water supply pipe; 6. Propulsion plate; 7. Limiting rod; 8. Connecting spring; 9. Exhaust port; 10. Piston block; 11. Wire guide plate; 12. Fixing block; 13. Sealing layer; 14. Solenoid valve; 15. Mounting box; 16. Squeezing plate; 17. First airbag; 18. Second airbag; 19. Return spring; 20. Connecting plate; 21. Electromagnet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: As Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6The technical solution shown addresses the problem that traditional waste heat recovery devices may experience increased internal pressure and subsequent safety accidents due to the continuous influx of heat. This self-relief waste heat recovery device for carbon black production discloses an exhaust mechanism, including a treatment box 1 with an air inlet pipe 2 at its bottom and a water supply pipe 5 inside. Water inlets 4 are connected to both sides of the water supply pipe 5. An automatic pressure relief exhaust mechanism is located at the upper part of the treatment box 1. This mechanism uses a pusher plate 6 within it to push a piston block 10 to slide upwards due to air pressure, thus achieving pressure relief and exhaust. The exhaust mechanism includes a pusher plate 6, which is slidably connected to the upper part of the treatment box 1. A fixing block 12 is fixedly connected to the top of the inside of the processing box 1, and the bottom end of the fixing block 12 is located at the middle position of the push plate 6. There are exhaust ports 9 at the four corners of the top of the processing box 1, and piston blocks 10 are slidably connected inside the exhaust ports 9. The bottom end of the piston block 10 is fixedly connected to a limit rod 7, and the bottom end of the limit rod 7 is connected to the top of the push plate 6. A connecting spring 8 is wound around the lower end of the outer side of the limit rod 7, and the top end of the connecting spring 8 is connected to the top of the inside of the processing box 1. The bottom end of the connecting spring 8 is connected to the top of the push plate 6, and the processing box 1 and the push plate 6 form an elastic structure through the elastic force of the connecting spring 8. A sealing layer 13 is provided on the outer side of the fixing block 12, and the outer side of the sealing layer 13 is in contact with the inner side of the push plate 6.

[0028] In this embodiment, the air inlet pipe 2 and the connecting pipe 3 are connected and fixed by a docking mechanism. Gas enters the interior of the treatment tank 1 through the air inlet pipe 2, and then demineralized water is introduced into the interior of the water inlet 4. The high-temperature hot gas heats and evaporates the demineralized water into gas, realizing the secondary utilization of waste heat. The self-depressurizing exhaust mechanism can reduce the loss of hot gas inside the treatment tank 1 without exhausting, so that the demineralized water can fully contact the hot gas. As the hot gas inside the treatment tank 1 increases, the internal pressure of the treatment tank 1 increases due to the continuous increase of gas. The increase in gas pressure will push the pusher plate 6 upward. 6. During the upward movement, the push plate 6 separates from the fixed block 12. Gas is discharged through the reserved space in the middle of the push plate 6 and enters the upper part of the processing box 1. Due to the upward movement of the push plate 6, the push plate 6 will move the limiting rod 7 upward synchronously. Using the movement of the limiting rod 7, the piston block 10 slides synchronously inside the exhaust port 9. The diameter of the upper end of the exhaust port 9 is larger than the diameter of the piston block 10. Therefore, when the piston block 10 moves upward, the gas will be discharged from the gap between the piston block 10 and the upper end of the exhaust port 9, thereby avoiding excessive accumulation of high-heat gas inside the processing box 1 and realizing automatic gas discharge; Figure 3As shown, a connecting spring 8 is wound around the outside of the limiting rod 7. The elastic force of the connecting spring 8 can assist the limiting rod 7 in resetting its position, so that the piston block 10 can be reset inside the exhaust port 9 simultaneously, thus preventing the gas from always being in a state of leakage.

[0029] Example 2: Figure 2 and Figure 3 The technical solution shown addresses the problem that hot gas may continue to flow in during the exhaust process, resulting in a slow internal depressurization rate: the self-depressurizing waste heat recovery and utilization device for carbon black production discloses a control component. A wire piece 11 is provided on the left side of the top of the push plate 6 and the top of the inside of the processing box 1. An electromagnet 21 is provided on the right side of the top of the push plate 6 and the top of the inside of the processing box 1. A solenoid valve 14 is provided inside the air inlet pipe 2.

[0030] In this embodiment, when the push plate 6 moves upward, it causes the electromagnet 21 to be attracted to the magnet docking assembly. After the electromagnet 21 is attracted to the magnet, the wire pieces 11 come into contact with each other, realizing circuit control. The solenoid valve 14 changes its opening and closing state. When the wire pieces 11 are in contact, the solenoid valve 14 is in the closed state, stopping the flow of hot air into the processing box 1. This allows the hot air inside the processing box 1 to be discharged through the exhaust port 9 before the air supply continues, reducing the occurrence of safety accidents. The electromagnet 21 works immediately after being energized. When the control signal is disconnected, the time relay keeps the electromagnet 21 energized for a period of time before de-energizing it. By using the delayed de-energization, the processing box 1 can maintain stable pressure relief for a period of time. At the same time, the solenoid valve 14 at the bottom of the processing box 1 also remains closed, stopping the air intake. The internal pressure relief of the auxiliary device is realized.

[0031] Example 3: Figure 1 , Figure 2 and Figure 4The technical solution shown addresses the potential leakage problem when the intake pipe 2 connects to the connecting pipe 3. This self-relief waste heat recovery device for carbon black production discloses a connection mechanism. The lower end of the outer side of the intake pipe 2 is equipped with this mechanism. The connection mechanism, through the compression of its included first air bladder 17, delivers gas to the interior of the second air bladder 18, achieving a seal on the side of the intake pipe 2. The connection mechanism includes a mounting box 15, which is located on the outer side of the intake pipe 2. The top of the mounting box 15 is equipped with... The device includes a first airbag 17, with a compression plate 16 at its bottom end. The compression plate 16 is slidably connected to the mounting box 15. A second airbag 18 is located at the bottom end of the compression plate 16. The inner side of the second airbag 18 is in contact with the outer side of the connecting pipe 3. The first airbag 17 and the second airbag 18 are connected by a hose. A docking plate 20 is provided at the bottom end of the mounting box 15 and on the outer side of the connecting pipe 3. A return spring 19 is provided inside the mounting box 15, and the top end of the compression plate 16 is connected to the return spring 19.

[0032] In this embodiment, by connecting the air inlet pipe 2 and the connecting pipe 3, the top end of the connecting pipe 3 is attached to the lower surface of the extrusion plate 16, so that the top end of the connecting pipe 3 pushes the extrusion plate 16 upward. The extrusion plate 16 simultaneously extrudes the first airbag 17. The gas inside the first airbag 17 is transported to the inside of the second airbag 18 through the hose, so that the second airbag 18 expands and fills the space between the side of the connecting pipe 3 and the inside of the mounting box 15. This squeezes and wraps the side of the connecting pipe 3, reducing the gap between the air inlet pipe 2 and the connecting pipe 3. The wrapping effect of the second airbag 18 can play an auxiliary role in heat preservation, reducing heat loss, and improving the heat preservation effect when the air inlet pipe 2 and the connecting pipe 3 transport hot air.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-relieving waste heat recovery and utilization device for carbon black production, comprising a treatment box (1), wherein an air inlet pipe (2) is provided at the bottom end of the treatment box (1), and a water supply pipe (5) is provided inside the treatment box (1), wherein water inlets (4) are connected to both the left and right sides of the water supply pipe (5). Its features are: The upper part of the processing box (1) is provided with an exhaust mechanism for automatic pressure relief. The exhaust mechanism releases pressure and exhausts gas by pushing the piston block (10) to slide upward due to the air pressure through the push plate (6) contained therein. The lower part of the outer side of the air inlet pipe (2) is provided with a docking mechanism. The docking mechanism is squeezed through the first air bladder (17) contained therein and the gas is transported to the inside of the second air bladder (18) to achieve sealing of the side of the air inlet pipe (2).

2. The self-relief waste heat recovery device for carbon black production according to claim 1, characterized in that: The exhaust mechanism includes a push plate (6), which is slidably connected to the upper end of the processing box (1). A fixing block (12) is fixedly connected to the top of the processing box (1), and the bottom end of the fixing block (12) is located at the middle position of the push plate (6). Exhaust ports (9) are provided at the four corners of the top of the processing box (1), and a piston block (10) is slidably connected inside the exhaust port (9). A limit rod (7) is fixedly connected to the bottom end of the piston block (10), and the bottom end of the limit rod (7) is connected to the top end of the push plate (6).

3. The self-relief waste heat recovery device for carbon black production according to claim 2, characterized in that: The lower end of the outer side of the limiting rod (7) is wrapped with a connecting spring (8), and the top end of the connecting spring (8) is connected to the top end inside the processing box (1). The bottom end of the connecting spring (8) is connected to the top end of the push plate (6), and the processing box (1) and the push plate (6) form an elastic structure through the elastic force of the connecting spring (8).

4. The self-relief waste heat recovery device for carbon black production according to claim 3, characterized in that: The outer side of the fixing block (12) is provided with a sealing layer (13), and the outer side of the sealing layer (13) is in contact with the inner side of the push plate (6).

5. A self-relief waste heat recovery device for carbon black production according to claim 4, characterized in that: A wire piece (11) is provided on the left side of the top of the push plate (6) and the top of the inside of the processing box (1). An electromagnet (21) is provided on the right side of the top of the push plate (6) and the top of the inside of the processing box (1). A solenoid valve (14) is provided inside the air inlet pipe (2).

6. A self-relief waste heat recovery device for carbon black production according to claim 5, characterized in that: The docking mechanism includes an installation box (15), which is located on the outside of the air inlet pipe (2). The top of the installation box (15) is provided with a first airbag (17), and the bottom of the first airbag (17) is provided with a compression plate (16). The compression plate (16) and the installation box (15) are slidably connected. The bottom of the compression plate (16) is provided with a second airbag (18). The inner side of the second airbag (18) is in contact with the outer side of the docking pipe (3). The first airbag (17) and the second airbag (18) are connected by a hose. The bottom of the installation box (15) and the outer side of the docking pipe (3) are provided with a docking plate (20).

7. A self-relief waste heat recovery device for carbon black production according to claim 6, characterized in that: The mounting box (15) is equipped with a reset spring (19), and the top of the pressing plate (16) is connected to the reset spring (19).

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