Step furnace with air cannon

Abstract

The invention discloses a stepped furnace with an air cannon, which comprises a furnace body, a basic support structure for the whole stepped furnace, a stepped fire grate arranged in the inner cavity of the furnace body, a solid feed port arranged on one side of the furnace body and a tertiary air pipe arranged on the top of the furnace body, the access door and the air cannon are arranged on one side of the furnace body, the main bearing structure comprises a main body and the air cannon, the air cannon controls instant release of high-pressure gas through a rapid electromagnetic release valve, strong impact force is generated, the air cannon acts on materials in the furnace through a fan-shaped nozzle, and coke and blockages on a fire grate are effectively removed; and the multiple air cannons are arranged according to the stepped fire grate, all key parts in the furnace can be covered, and the comprehensiveness and thoroughness of the unblocking effect are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of stepped furnaces, in particular to a stepped furnace with an air cannon. Background Art

[0002] A step furnace is a specially designed industrial furnace or heat treatment equipment. Its characteristic is that the temperature or atmosphere conditions in the furnace are distributed in a stepped manner along the length of the furnace. This design allows the material to undergo different heat treatment stages in sequence as it passes through the furnace body, thereby achieving specific process requirements. Step furnaces are widely used in metal heat treatment, ceramic sintering, glass annealing and other fields, and are important equipment in the material processing and manufacturing process.

[0003] The working principle of the step furnace is based on the precise adjustment of temperature gradient and atmosphere control. The interior of the furnace is divided into multiple temperature zones, each of which can independently control the temperature and atmosphere conditions. The material enters from one end of the furnace body and gradually experiences changes from low temperature to high temperature (or from high temperature to low temperature) as it moves in the furnace, as well as corresponding adjustments to the atmosphere conditions. This step-by-step treatment process helps to uniformly transform the internal structure of the material and improve the quality and performance of the product. During the operation of the step furnace, due to the influence of various factors such as material properties, temperature distribution in the furnace, and airflow movement, materials are prone to accumulation on the grate. Long-term accumulation will cause the material to coke and form hard coke blocks. These coke blocks are not only difficult to remove, but also hinder the normal flow of materials and affect the continuous operation of the step furnace. Summary of the Invention

[0004] The purpose of the present invention is to provide a stepped furnace with an air cannon, which has the advantages of airflow impact and solves the problem that during the operation of the stepped furnace, due to the influence of various factors such as material properties, temperature distribution in the furnace and airflow movement, materials are easily accumulated on the grate. Long-term accumulation will cause the material to coke and form hard coke blocks. These coke blocks are not only difficult to remove, but also hinder the normal flow of materials, affecting the continuous operation of the stepped furnace.

[0005] To achieve the above object, the present invention provides the following technical solution: a stepped furnace with an air cannon, comprising:

[0006] The step furnace includes a furnace body, a basic supporting structure for the entire step furnace, a stepped grate arranged in the inner cavity of the furnace body for layered processing and movement of materials, a solid feed port arranged on one side of the furnace body, a tertiary air duct arranged on the top of the furnace body, and an inspection door arranged on one side of the furnace body;

[0007] The air cannon includes a main body, a main bearing structure of the air cannon, a movable counterscrew arranged on one side of the main body, a quick electromagnetic release valve arranged on one side of the movable counterscrew, a head flange arranged on one side of the main body, a nozzle flange arranged on one side of the head flange, a nozzle arranged on one side of the nozzle flange, and a fan-shaped nozzle arranged on one side of the nozzle, wherein the fan-shaped nozzle passes through the furnace body and is used for ejecting compressed air, and a bellows is connected between the head flanges.

[0008] Preferably, the stepped furnace further includes an observation window, which is arranged on one side of the furnace body, and a hydraulic pusher arranged on one side of the furnace body, which is used to automatically remove coke and avoid material accumulation and blockage.

[0009] Preferably, the air cannon further includes an air tank, a safety valve arranged on the air tank, a pressure gauge arranged on the air tank, and a movable elbow arranged on the top of the air tank for connecting to the main body, and four air cannons are arranged according to the stepped grate.

[0010] Preferably, the air cannon also includes a gas main pipe for supplying gas, one end of the gas main pipe is connected to the gas storage tank, the surface of the gas main pipe is connected to a ball valve, a filter valve, a two-way valve, a one-way valve and a high-pressure hose, and one end of the gas main pipe is also connected to a stainless steel pipe, a pair of threads and an elbow pair of threads.

[0011] Preferably, the air cannon also includes a power cable, the output end of the power cable is connected to an electrical control box for controlling the quick electromagnetic release valve, the output end of the electrical control box is connected to a control cable, and the output ends of the control cables are respectively connected to the quick electromagnetic release valves.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention uses an air cannon to control the instantaneous release of high-pressure gas through a quick electromagnetic release valve, generating a powerful impact force, which acts on the material in the furnace through a fan-shaped nozzle, effectively removing coke and blockages on the grate, ensuring the smooth flow of materials. Multiple air cannons are set according to the stepped grate, which can cover various key parts in the furnace and ensure the comprehensiveness and thoroughness of the blockage removal effect.

[0014] 2. The present invention forms an efficient gas transmission system through the gas transmission main pipe and the accessories such as ball valves, filter valves, two-way valves and one-way valves connected to the surface thereof, ensuring the stable transmission and precise control of high-pressure gas. The power cable, electrical control box and control cable realize remote control of the quick electromagnetic release valve, improving the convenience and safety of operation. At the same time, the electrical control system can also adjust the working frequency and strength of the air cannon according to the actual situation in the furnace to realize intelligent control. By introducing the air cannon clearing technology, the coking and blockage problems in the furnace are effectively solved, the material fluidity and combustion efficiency are improved, thereby significantly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the main structure of the air cannon of the present invention;

[0017] Figure 3 This is a schematic diagram of the top view of the air cannon of the present invention;

[0018] Figure 4 It is a schematic diagram of the grate structure of the present invention.

[0019] In the figure: 100, stepped furnace; 101, furnace body; 102, grate; 103, solid feed port; 104, tertiary air duct; 105, inspection door; 106, observation window; 107, hydraulic pusher; 200, air cannon; 201, main body; 202, movable thread; 203, rapid electromagnetic release valve; 204, head flange; 205, nozzle flange; 206, nozzle; 207, fan nozzle; 208. Bellows; 211. Safety valve; 212. Pressure gauge; 213. Gas tank; 214. Swivel joint; 221. High-pressure hose; 222. One-way valve; 223. Two-way fitting; 224. Filter valve; 225. Ball valve; 226. Stainless steel pipe; 227. Matching thread; 228. Elbow matching thread; 229. Gas main; 231. Power cable; 232. Electric control box; 233. Control cable. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] like Figure 1-4As shown, the first embodiment of the present invention provides a stepped furnace with an air cannon, comprising:

[0023] The step furnace 100 includes a furnace body 101, a basic supporting structure for the entire step furnace 100, a grate 102 arranged in a stepped shape in the inner cavity of the furnace body 101 for layered processing and movement of materials, a solid feed port 103 arranged on one side of the furnace body 101, a tertiary air duct 104 arranged on the top of the furnace body 101, and an inspection door 105 arranged on one side of the furnace body 101. The furnace body 101 provides installation space for various components in the furnace and forms a relatively closed space to ensure the normal operation of the combustion process in the furnace. The installation of other components such as 05 provides a stable platform, so that the stepped furnace 100 can form a complete working unit, ensuring the stability and safety of the material processing process in the furnace. The grate 102 is arranged in a stepped shape, which is convenient for the layered processing and movement of materials, so that the materials can be dried, burned and other processes in the furnace according to a certain rule, thereby improving the processing efficiency and effect. The stepped grate 102 can increase the contact area and time between the material and the heat source, so that the material undergoes different processing stages on different steps, which is beneficial to the full combustion and heat utilization of the material, and is convenient for controlling the movement speed and residence time of the material.

[0024] The air cannon 200 includes a main body 201, a main bearing structure of the air cannon 200, a movable pair of wires 202 arranged on one side of the main body 201, a quick electromagnetic release valve 203 arranged on one side of the movable pair of wires 202, a head flange 204 arranged on one side of the main body 201, a nozzle flange 205 arranged on one side of the head flange 204, a nozzle 206 arranged on one side of the nozzle flange 205, and a fan-shaped nozzle 207 arranged on one side of the nozzle 206. The fan-shaped nozzle 207 passes through the furnace body 101 and is used for ejecting compressed air. A bellows 208 is connected between the head flanges 204. The main body 201 in the air cannon 200 serves as the main bearing structure of the air cannon 200, provides a mounting base for other components, and at the same time accommodates compressed air, providing a power source for the operation of the air cannon 200, ensuring the stable installation and normal operation of each component of the air cannon 200, being able to withstand the pressure of compressed air, and ensuring that the air cannon 200 can accurately and effectively eject compressed air when working.

[0025] like Figure 1-4 As shown,

[0026] The movable thread 202 is easy to connect and disassemble with other components, which facilitates the installation, maintenance and replacement of parts of the air cannon 200, improves the assembly and maintenance efficiency of the air cannon 200, reduces maintenance costs, and at the same time ensures the reliability and sealing of the connection to prevent compressed air leakage. The fast electromagnetic release valve 203 is used to quickly control the release of compressed air to achieve the instantaneous injection function of the air cannon 200, timely clear the blockage in the furnace, and can be opened or closed in a short time to quickly eject the compressed air, generate a strong impact force, and effectively clear the blockage such as coking and material accumulation in the furnace. , to ensure the normal flow of materials in the furnace, the head flange 204 is used to connect the main body 201 and other components, and at the same time plays a sealing role to prevent compressed air leakage, ensuring the connection strength and sealing between the various components of the air cannon 200, ensuring that the compressed air can be accurately delivered to the nozzle 206, and improving the working efficiency and reliability of the air cannon 200. The nozzle flange 205 connects the head flange 204 and the nozzle 206 to further ensure the sealing and connection stability, and at the same time provides positioning for the installation of the nozzle 206, so that the nozzle 206 can be accurately installed on the main body 201, ensuring The compressed air can be smoothly ejected from the nozzle 206, thereby improving the accuracy and effect of the ejection. The nozzle 206 guides the compressed air to a specific position in the furnace so that the compressed air can be ejected in a suitable direction and angle to achieve the purpose of clearing the blockage. By rationally designing the length and shape of the nozzle 206, the compressed air can be accurately applied to the blocked part in the furnace, thereby improving the efficiency and effect of clearing the blockage. The fan-shaped nozzle 207 ejects the compressed air in a fan-shaped manner, thereby expanding the ejection range and improving the effect of clearing the blockage. The fan-shaped nozzle 207 can disperse the compressed air over a larger area, thereby increasing the coverage area of the ejection, and can more effectively clear blockages at different positions in the furnace, thereby improving the working performance of the air cannon 200. The bellows 208, which is connected to the head flange 204, plays a buffering and compensating role, reducing stress caused by installation errors, thermal expansion and other factors, ensuring the reliability and sealing of the connection, and can absorb and compensate for the thermal expansion and contraction of the pipeline, reducing damage to the components of the air cannon 200 caused by stress caused by temperature changes, thereby extending the service life of the air cannon 200, while ensuring sealing performance and preventing compressed air leakage.

[0027] Example 2

[0028] Reference Figure 1-3 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0029] In this embodiment, the stepped furnace 100 further includes an observation window 106 disposed on one side of the furnace body 101 , and a hydraulic pusher 107 disposed on one side of the furnace body 101 for automatically removing coke to avoid material accumulation and blockage.

[0030] The air cannon 200 also includes an air tank 213, a safety valve 211 arranged on the air tank 213, a pressure gauge 212 arranged on the air tank 213, and a movable elbow 214 arranged on the top of the air tank 213 for connecting to the main body 201. Four air cannons 200 are arranged according to the stepped grate 102.

[0031] like Figure 1-3 As shown, the solid feed port 103 provides a channel for solid materials to enter the furnace body 101, which is convenient for feeding the materials to be processed into the furnace for subsequent processing, ensuring that the materials can enter the furnace smoothly and orderly, avoiding blockage and spillage of materials during the feeding process, improving feeding efficiency and accuracy, and helping to maintain the normal operation of the stepped furnace 100. The tertiary air duct 104 is set at the top of the furnace body 101, for introducing tertiary air into the furnace, adjusting the air flow distribution and combustion conditions in the furnace, and promoting the full combustion of the materials. By introducing tertiary air, the aerodynamic conditions in the furnace can be improved, making combustion more complete, reducing pollutant emissions, and at the same time helping to improve the thermal efficiency of the furnace and reduce energy consumption. The inspection door 105 facilitates inspection and maintenance of the interior of the furnace body 101. When a fault occurs in the furnace or cleaning is required, the staff can enter the furnace through the inspection door 105 to operate, which improves The maintainability and reliability of the stepped furnace 100 reduce downtime caused by maintenance difficulties, reduce maintenance costs, and ensure the long-term stable operation of the stepped furnace 100. The observation window 106 is set on one side of the furnace body 101, which is convenient for the staff to observe the processing and combustion status of the materials in the furnace, discover problems in time and make adjustments, so that the staff can understand the situation in the furnace in real time without opening the furnace body 101, which improves the convenience and safety of operation, helps to adjust the operating parameters in time, and ensure the normal operation and processing effect of the stepped furnace 100. The hydraulic pusher 107 is used to automatically remove coke, avoid material accumulation and blockage, ensure the smooth flow of materials in the furnace, and can clean up coke and accumulated materials that may appear in the furnace in time, reducing the workload and difficulty of manual cleaning, improving the operating efficiency and stability of the stepped furnace 100, and reducing the risk of failure caused by material blockage.

[0032] The air tank 213 stores compressed air and provides a stable air source for the air cannon 200, ensuring that the air cannon 200 has sufficient pressure and air volume when working. It can provide continuous power support for the air cannon 200 when the compressed air supply is unstable, ensuring that the air cannon 200 can work normally at any time, thereby improving the reliability and stability of the air cannon 200. The safety valve 211 automatically opens to release the pressure when the pressure in the air tank 213 exceeds the set value, preventing the air tank 213 from exploding due to excessive pressure and other safety accidents, providing safety protection for the air tank 213 and avoiding equipment damage and casualties caused by excessive pressure. The pressure gauge 212 displays the air storage status in real time. The pressure value in the tank 213 makes it easy for the staff to understand the working status of the gas tank 213 and adjust the supply of compressed air in time, so that the staff can intuitively grasp the pressure situation in the gas tank 213 and take timely measures when the pressure is abnormal, thereby ensuring the normal operation and safety of the air cannon 200 system. The movable elbow 214 is used to connect the gas tank 213 and the main body 201, and is convenient for adjusting the angle, so that the air cannon 200 can adapt to different installation positions and directions, thereby improving the flexibility and adaptability of the installation of the air cannon 200. The spray direction of the air cannon 200 can be adjusted according to different furnace body 101 structures and installation requirements, thereby ensuring the use effect of the air cannon 200.

[0033] Example 3

[0034] Reference Figure 3 , which is the third embodiment of the present invention, is based on the first two embodiments.

[0035] In this embodiment, the air cannon 200 also includes a gas main pipe 229 for gas transmission. One end of the gas main pipe 229 is connected to the gas storage tank 213. The surface of the gas main pipe 229 is connected to a ball valve 225, a filter valve 224, a two-way valve 223, a one-way valve 222 and a high-pressure hose 221. One end of the gas main pipe 229 is also connected to a stainless steel pipe 226, a threaded joint 227 and an elbow threaded joint 228.

[0036] The air cannon 200 also includes a power cable 231 , the output end of the power cable 231 is connected to an electrical control box 232 for controlling the quick electromagnetic release valve 203 , the output end of the electrical control box 232 is connected to a control cable 233 , and the output end of the control cable 233 is respectively connected to the quick electromagnetic release valve 203 .

[0037] like Figure 3As shown, the gas main pipe 229 is used to transmit gas, and transmits compressed air from the gas tank 213 to various components of the air cannon 200 to ensure the normal operation of the air cannon 200, provide a stable transmission channel for compressed air, so that the compressed air can be evenly distributed to each air cannon 200, and ensure the injection effect and working stability of the air cannon 200. The ball valve 225, the filter valve 224, the two-way valve 223 and the one-way valve 222, the ball valve 225 is used to control the on-off of the gas main pipe 229; the filter valve 224 is used to filter impurities in the compressed air to ensure air quality, the two-way valve 223 usually includes a pressure reducing valve and an oil mist generator, which are used to adjust the pressure of the compressed air and add lubricating oil. The one-way valve 222 is used to prevent the compressed air from flowing back. These components together ensure the quality of the compressed air and the stability of transmission, extend the service life of the air cannon 200, and improve the working efficiency and reliability of the air cannon 200.

[0038] The stainless steel pipe 226, the thread 227 and the elbow thread 228 are respectively used to connect the gas main pipe 229 and other components to ensure the sealing of the gas pipeline and the stability of the connection, so that the gas pipeline can be accurately connected to each component, prevent the leakage of compressed air, ensure the normal delivery of compressed air, and improve the working performance of the air cannon 200. The power cable 231 provides power supply to the electric control box 232 to ensure that the electric control box 232 can work normally and ensure that the electric control box 232 can accurately control the opening and closing of the quick electromagnetic release valve 203, thereby controlling the injection time of the air cannon 200, improving the automation level and control accuracy of the air cannon 200. 2. It is used to control the quick electromagnetic release valve 203 to achieve precise control of the injection time of the air cannon 200. The injection time and frequency of the air cannon 200 can be set through the electrical control box 232, so that the air cannon 200 can automatically or manually spray according to the actual situation in the furnace, thereby improving the flexibility and work efficiency of the air cannon 200. The control cable 233 transmits the control signal of the electrical control box 232 to the quick electromagnetic release valve 203, thereby realizing the control of the quick electromagnetic release valve 203 by the electrical control box 232, ensuring the accurate transmission of the control signal, and enabling the electrical control box 232 to timely and effectively control the action of the quick electromagnetic release valve 203, thereby ensuring the normal operation of the air cannon 200.

[0039] During use, add an appropriate amount of material into the furnace through the solid feed port 103, observe the combustion situation in the observation window 106, and ensure that the material is burning stably. When coking or material accumulation and blockage are found on the grate 102, prepare to start the air cannon 200, open the ball valve 225 and filter valve 224 on the gas main 229 to ensure smooth gas flow, and activate the quick electromagnetic release valve 203 through the electrical control box 232 to instantly release the high-pressure gas in the gas tank 213. The nozzle 206 and fan nozzle 207 act on the coking or blockage on the grate 102. Depending on the blockage situation, the air cannon 200 can be activated multiple times until the coking or blockage is cleared. During operation, the reading of the pressure gauge 212 should be closely monitored to ensure that the pressure in the gas tank 213 is within a safe range. The use of the hydraulic pusher 107 can be periodically activated during the material combustion process to automatically remove coking and residue on the grate 102, keeping the grate 102 clean and the material flow smooth.

[0040] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. In addition, this application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A stepped furnace with an air cannon, characterized in that: include, A stepped furnace (100) comprises a furnace body (101), a basic supporting structure for the entire stepped furnace (100), a stepped grate (102) arranged in the inner cavity of the furnace body (101) for layered processing and movement of materials, a solid feed port (103) arranged on one side of the furnace body (101), a tertiary air duct (104) arranged on the top of the furnace body (101), and an inspection door (105) arranged on one side of the furnace body (101); An air cannon (200) comprises a main body (201), a main bearing structure of the air cannon (200), a movable counterscrew (202) arranged on one side of the main body (201), a quick electromagnetic release valve (203) arranged on one side of the movable counterscrew (202), a head flange (204) arranged on one side of the main body (201), a nozzle flange (205) arranged on one side of the head flange (204), a nozzle (206) arranged on one side of the nozzle flange (205), and a fan-shaped nozzle (207) arranged on one side of the nozzle (206), wherein the fan-shaped nozzle (207) passes through the furnace body (101) and is used for ejecting compressed air, and a bellows (208) is connected between the head flanges (204).

2. The step furnace with air cannon according to claim 1, characterized in that: The stepped furnace (100) further includes an observation window (106) disposed on one side of the furnace body (101), and a hydraulic pusher (107) disposed on one side of the furnace body (101) for automatically removing coke and avoiding material accumulation and blockage.

3. The step furnace with air cannon according to claim 1, characterized in that: The air cannon (200) further includes an air storage tank (213), a safety valve (211) arranged on the air storage tank (213), a pressure gauge (212) arranged on the air storage tank (213), and a movable elbow (214) arranged on the top of the air storage tank (213) for connecting to the main body (201). Four air cannons (200) are arranged according to the stepped grate (102).

4. The step furnace with air cannon according to claim 1, characterized in that: The air cannon (200) further comprises an air main pipe (229) for delivering air. One end of the air main pipe (229) is connected to the air storage tank (213). The surface of the air main pipe (229) is connected to a ball valve (225), a filter valve (224), a two-way connection (223), a one-way valve (222) and a high-pressure hose (221). One end of the air main pipe (229) is also connected to a stainless steel pipe (226), a threaded joint (227) and an elbow threaded joint (228).

5. The step furnace with air cannon according to claim 1, characterized in that: The air cannon (200) further comprises a power cable (231), the output end of the power cable (231) being connected to an electric control box (232) for controlling the rapid electromagnetic release valve (203), the output end of the electric control box (232) being connected to a control cable (233), the output ends of the control cables (233) being respectively connected to the rapid electromagnetic release valves (203).

Images