Energy-saving heating furnace based on PLC automatic temperature control

Abstract

The invention relates to the technical field of hot gas recycling, in particular to an energy-saving heating furnace based on PLC automatic temperature control, which comprises a heating box, a transmission box placed on the ground is fixedly mounted on one side of the heating box, and a blocking unit is arranged on one side, close to the heating box, of an inner cavity of the transmission box. According to the device, hot air in the air storage pipe can be conveyed into the treatment bin through the ventilation assembly by starting the cooling unit, meanwhile, water is injected into the water storage ring through the water changing assembly, and therefore rapid heat exchange in the heating box is achieved without opening the heating box; hot air and hot water in the heat exchange process are in the air storage pipe and the water storage ring respectively, so that the hot air and the hot water are in direct contact with the interior of the heating furnace, additional filtration is not needed, and the hot air and the hot water after heat exchange finally conduct heat conduction on clear water in the treatment bin so that the clear water can be conveniently used for water bath; and high efficiency and energy conservation are realized.

Description

Technical Field

[0001] The invention relates to the technical field of hot gas recovery and utilization, and in particular to an energy-saving heating furnace based on PLC automatic temperature control. Background Art

[0002] In the metallurgical industry, a heating furnace is a device that heats materials or workpieces to the rolling or forging temperature. Heating furnaces are used in many industries such as petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, and pharmaceuticals.

[0003] The prior art discloses a Chinese patent with application number CN202220455480.0. An energy-saving heating furnace for powder metallurgy discloses that flue gas dissipates heat into a heat exchange box through a spiral tube, and an air pump is used to transport air into the heat exchange line. After the air is heated by the heat in the heat exchange box, it flows from the hose to two air pipes, which can preheat the material, thereby increasing the heating speed of the material and avoiding waste of flue gas heat.

[0004] The above-mentioned device can collect and reuse the heat generated when the heating furnace is working, achieving a preheating effect and avoiding heat waste. However, the above-mentioned device can only store and reuse the heat. When the temperature of the heating furnace is too high during use and needs to be cooled down, the heat generated during the cooling down cannot be utilized. At the same time, when the heat inside the heating furnace needs to be discharged, the discharged hot gas cannot be directly utilized due to the internal doping of metal particles. Summary of the invention

[0005] The purpose of the present invention is to provide an energy-saving heating furnace based on PLC automatic temperature control to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A PLC-based energy-saving heating furnace comprises a heating box, a transmission box placed on the ground is fixedly installed on one side of the heating box, a barrier unit is provided on the inner cavity of the transmission box close to the heating box, a filter box connected with the interior is fixedly installed on the side of the transmission box away from the heating box, a processing bin is fixedly installed on the side of the filter box away from the transmission box, water is contained in the processing bin to recover the waste heat in the heating furnace for water bath heating, so as to realize the reuse of the hot gas, an annular water storage ring is fixedly installed on the lower part of the inner cavity of the heating box, a water exchange pipe is fixedly installed on one side of the water storage ring, a conduction pipe connected to the side wall of the inner cavity of the heating box is provided on the upper part of the water storage ring, a plurality of annularly distributed steam rings are jointly installed between the conduction pipe and the water storage ring, a gas storage pipe fixedly connected to the inner cavity of the heating box is provided on the upper part of the steam ring, a box door is provided in the middle of the heating box and one side of the transmission box, a cooling unit is provided on the side of the heating box away from the transmission box, the cooling unit comprises a ventilation component and a water exchange component, and a cleaning component is provided on the upper part of the filter box.

[0008] Further, the air exchange component includes an air exchange cylinder installed on the side wall of the heating box. The side of the air exchange cylinder close to the heating box is communicated with the gas storage pipe in the inner cavity of the heating box. A one-way valve is provided at the connection between the air exchange cylinder and the gas storage pipe. A piston is slidably installed in the middle of the inner cavity of the air exchange cylinder, and one end of the piston penetrates and slides on the side of the air exchange cylinder away from the heating box.

[0009] Further, a convex plate fixedly connected to the heating box is provided above the air exchange cylinder. A driving plate is rotatably installed on the side of the convex plate close to the air exchange cylinder through a motor. A moving plate slidably connected to the outer wall of the air exchange cylinder is provided on the side of the driving plate away from the convex plate. An arc-shaped through groove is formed on the moving plate. A cylinder on one side of the driving plate is placed in the through groove and slides. The lower part of one side of the moving plate is fixedly connected to the piston. A lower pipe communicated with its inner cavity is fixedly installed on the lower end face of the air exchange cylinder. An air delivery pipe is fixedly installed on one side of the gas storage pipe, and the end of the air delivery pipe away from the gas storage pipe is placed in the processing bin.

[0010] Further, a control cylinder fixedly connected to the heating box is provided between the air exchange component and the water changing component. An inverted L-shaped plate is fixedly installed in the upper part of the inner cavity of the control cylinder. The end of the lower pipe away from the air exchange cylinder is communicated with the inner cavity of the control cylinder. A moving plug is slidably installed on the side of the inverted L-shaped plate close to the lower pipe. One side of the moving plug is tapered. A spring is jointly connected between the lower end face of the moving plug and the inverted L-shaped plate. A vertical side groove is formed on the side of the control cylinder away from the heating box. A C-shaped plate is fixedly installed on one side of the lower end face of the moving plug, and the C-shaped plate is slidably connected in the side groove.

[0011] Further, the water changing component includes a support plate fixedly connected to the heating box. A water supply tank is fixedly installed on the upper end face of the support plate. Water for quickly changing water and cooling when the temperature inside the heating box is too high is stored inside the water supply tank. An outlet plate communicated with its inner cavity is fixedly installed at the lower end of the water supply tank.

[0012] Further, a through port is provided on the side of the outlet plate away from the heating box. An L-shaped blocking member is slidably installed in the through port. One side of the blocking member is fixedly connected to the C-shaped plate. A water guide plate fixedly connected to the heating box is provided below the outlet plate. A water supply pipe is fixedly installed on the side of the water guide plate close to the heating box, and the end of the water supply pipe away from the water guide plate is connected to the water storage ring.

[0013] Further, the blocking unit includes an arc-shaped plate located in the transmission box and slidably connected thereto. An arc-shaped tooth groove is formed in the middle of the side of the arc-shaped plate close to the heating box. A regulating rod rotatably connected to the transmission box is provided on one side of the tooth groove. A control wheel is fixedly installed at the lower end of the regulating rod. The control wheel is fixedly connected to the regulating rod and meshes with the tooth groove.

[0014] Further, a central rod is rotatably installed in the middle of the transmission box. A C-shaped frame is installed circumferentially outside the central rod. A front frame is provided on one side of the C-shaped frame away from the central rod. A spring is connected between the front frame and the C-shaped frame. A primary filter plate is detachably installed in the middle of the front frame and the C-shaped frame. Grooves are symmetrically formed on one side of the front frame away from the C-shaped frame. A resisting member is slidably installed in the grooves. A spring is connected between the resisting member and the grooves.

[0015] Further, the cleaning assembly includes a baffle installed in the middle of the inner cavity of the filter box. A cover plate for covering the filter box is detachably installed above the baffle. The top end of the central rod penetrates through the transmission box and is fixedly installed with a central wheel. Tooth plates slidably connected to the transmission box are provided on both sides of the central wheel. Connection plates are fixedly installed on the upper end surfaces of the two tooth plates. A cleaning brush is fixedly installed at one end of the connection plate. A plurality of side pipes connected to the filter box are provided on one side above the baffle. One end of the side pipe away from the filter box is placed in the water in the treatment chamber.

[0016] Further, a one-way valve is provided on the side of the air delivery pipe close to the air storage pipe. The air storage pipe has a threaded circumferential structure. A water pump is provided at one end of the water exchange pipe close to the heating box.

[0017] Advantages of the present invention:

[0018] 1. In the present invention, by pre-adding clear water or other liquids into the treatment chamber, when the temperature in the heating box is too high and needs to be cooled down, by turning on the cooling unit, the ventilation assembly can convey the hot air in the air storage pipe into the treatment chamber. At this time, the ventilation assembly injects external air into the air storage pipe. The water pump is turned on to convey the hot water in the water storage ring to the treatment chamber. And when the ventilation group is turned on, the water exchange assembly is synchronously driven to inject water into the water storage ring, so that rapid heat exchange in the heating box can be realized without opening the heating box, and the temperature can be cooled down when it is too high. And the hot air and hot water in the heat exchange are respectively in the air storage pipe and the water storage ring. Therefore, the hot air and hot water are both in direct contact inside the heating furnace. Therefore, no additional filtration is required. The hot air and hot water after heat exchange finally conduct heat to the clear water in the treatment chamber to facilitate water bath use, so as to achieve high efficiency and energy saving.

[0019] 2. In the present invention, when the temperature in the heating furnace is too high detected by the PLC, the PLC controls the motor to turn on. At this time, the motor turns on to drive the driving plate to rotate. When the driving plate rotates, it drives the moving plate to slide. When the moving plate slides, it synchronously drives the piston to compress downward. When the piston compresses, the external air is transmitted into the air storage pipe. The original high-temperature gas inside the air storage pipe is discharged into the treatment chamber through the air delivery pipe. By replacing the gas inside the air storage pipe, the temperature reduction of the heating furnace when the working temperature is too high is realized.

[0020] 3. Through the downward compression of the piston, the present invention can ventilate the gas inside the gas storage pipe. At the same time, when the piston presses down, the air pressure pushes the moving plug downward. At this time, the water pump is turned on to discharge the hot water in the water storage ring to the treatment bin through the water exchange pipe. The moving plug drives the blocking member to move downward through the C-shaped plate. At this time, the cold water in the water supply tank is transported to the water storage ring through the water outlet plate, the through port, the water guide plate, and finally through the water supply pipe. By injecting cold water into the water storage ring, on the one hand, it cooperates with the ventilation inside the gas storage pipe to double-cool the heating box. On the other hand, the exchanged hot water is discharged into the treatment bin, which further accelerates the heating of the clear water inside the treatment bin, enabling the heat generated during the operation of the heating furnace to be recycled multiple times.

[0021] 4. When the regulating rod rotates, it synchronously drives the control wheel to rotate. When the control wheel rotates, it drives the arc plate to rotate along the axis of the transmission box by meshing with the tooth groove, thereby realizing the reuse of the hot air discharged from the heating box. And by controlling the rotation of the regulating rod, the rotation angle of the arc plate can also be adjusted, enabling the discharge rate of the hot air in the heating box to be controllably adjusted and discharged, making the entire device controllable when reusing the discharged hot air.

[0022] 5. The gas in the heating box spreads into the transmission box. At this time, the hot air flow impacts the primary filter plate during the process. The central rod rotates under the impact of the hot air. At this time, multiple primary filter plates rotate in sequence to block metals and the like in the hot air. The hot air filtered by the primary filter plate flows into the filter box. Subsequently, the hot air processed and filtered by the primary filter plate rises and passes through the baffle to filter the upward-spreading hot air again, blocking the metal impurities in the hot air. The hot air after multiple filtrations finally flows into the treatment bin through the side pipe, and finally conducts water bath heating on the clear water in the treatment bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is a schematic diagram of the overall front-side structure of the present invention;

[0025] Figure 2 is a schematic diagram of the overall rear-side structure of the present invention;

[0026] Figure 3 is a schematic diagram of the overall front-side cross-sectional structure of the present invention;

[0027] Figure 4 is a schematic diagram of the structure of the blocking unit of the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the transmission box of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the heating box and the cooling unit of the present invention;

[0030] Figure 7 It is a schematic diagram of the side sectional structure of the heating box of the present invention;

[0031] Figure 8 It is a schematic diagram of the front sectional structure of the cooling unit of the present invention;

[0032] Fig. 9 It is a schematic diagram of the inner cavity structure of the cooling unit and the heating box of the present invention.

[0033] The reference numerals in the figure are as follows:

[0034] 1. Heating box; 10. Gas storage pipe; 101. Ventilation cylinder; 102. Piston; 103. Convex plate; 104. Driving plate; 105. Moving plate; 106. Lower pipe; 107. Air delivery pipe; 11. Water storage ring; 111. Water exchange pipe; 12. Conduit; 13. Steam ring; 14. Control cylinder; 141. Inverted L-shaped plate; 142. Moving plug; 143. Side groove; 144. C-shaped plate; 15. Support plate; 151. Water supply tank; 152. Water outlet plate; 153. Blocking member; 154. Water guide plate; 155. Water supply pipe; 2. Transmission box; 21. Arc plate; 211. Tooth groove; 212. Regulation rod; 213. Control wheel; 22. Central rod; 221. C-shaped frame; 222. Front frame; 223. Primary filter plate; 224. Groove; 225. Resistance member; 3. Filter box; 31. Baffle; 32. Central wheel; 33. Tooth plate; 34. Connecting plate; 35. Cleaning brush; 36. Side pipe; 4. Processing chamber. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0036] An energy-saving heating furnace based on PLC automatic temperature control. The energy-saving heating furnace is a special device of the furnace type. Specifically, it is to reuse the high heat generated during metallurgy by the heating furnace. Among them, the energy-saving heating furnace in the present invention belongs to the high-efficiency energy-saving industry.

[0037] Such as Figure 1-Figure 9As shown, it includes a heating box 1, a transmission box 2 placed on the ground is fixedly installed on one side of the heating box 1, a barrier unit is provided on the inner cavity of the transmission box 2 near the heating box 1, a filter box 3 connected to the inside of the transmission box 2 is fixedly installed on the side away from the heating box 1, a processing chamber 4 is fixedly installed on the side of the filter box 3 away from the transmission box 2, water is contained in the processing chamber 4, so as to recover the waste heat in the heating furnace for water bath heating, so as to realize the reuse of the hot gas, and an annular water storage ring 11 is fixedly installed at the lower part of the inner cavity of the heating box 1, and the water storage ring 1 1A water exchange pipe 111 is fixedly installed on one side, a conduction pipe 12 connected to the side wall of the inner cavity of the heating box 1 is arranged on the upper part of the water storage circle 11, a plurality of annularly distributed steam circles 13 are installed between the conduction pipe 12 and the water storage circle 11, an air storage pipe 10 fixedly connected to the inner cavity of the heating box 1 is arranged on the upper part of the steam circle 13, a box door is arranged in the middle of one side of the heating box 1 and the transmission box 2, a cooling unit is arranged on the side of the heating box 1 away from the transmission box 2, the cooling unit includes a ventilation component and a water exchange component, and a cleaning component is arranged on the upper part of the filter box 3.

[0038] Clean water or other liquids are added to the processing chamber 4 in advance. When the temperature in the heating box 1 is too high and needs to be cooled down, the cooling unit can be turned on to enable the ventilation component to transport the hot air in the gas storage pipe 10 to the processing chamber 4. At this time, the ventilation component injects external gas into the gas storage pipe 10, and the water pump is turned on to transport the hot water in the water storage circle 11 to the processing chamber 4. When the ventilation group is turned on, the water exchange component is simultaneously driven to fill the water storage circle 11 with water, so that there is no need to open the heating box 1 to achieve rapid heat exchange in the heating box 1, so that the temperature is cooled down when it is too high, and the hot air and hot water in the heat exchange are respectively in the gas storage pipe 10 and the water storage circle 11, so the hot air and hot water are in direct contact with the inside of the heating furnace, so no additional filtration is required, and the hot air and hot water after heat exchange finally conduct heat to the clean water in the processing chamber 4 to make it convenient for water bath use, so as to achieve high efficiency and energy saving.

[0039] When the heating furnace finishes heating the metal material and needs to discharge the hot air inside the heating box 1, since the high-temperature hot air inside the heating box 1 contacts the metal when heating the metal, a large amount of metal particles are mixed in the hot air. Therefore, if the hot air in the heating box 1 is to be recycled and reused, it needs to be filtered. The barrier unit is opened to allow the heating box 1 and the transmission box 2 to pass through, and then the hot air in the heating box 1 is initially filtered in the transmission box 2, and then the initially filtered hot air is transmitted upward on the filter box 3, and finally the hot air heats the water in the processing chamber 4.

[0040] When the hot air inside the heating box 1 is discharged, the hot air in the gas storage pipe 10 and the hot water in the water storage ring 11 are discharged synchronously by opening the cooling component, thereby accelerating the discharge of the hot air in the heating box 1.

[0041] The ventilation component includes a ventilation cylinder 101 installed on the side wall of the heating box 1. One side of the ventilation cylinder 101 close to the heating box 1 is communicated with the gas storage pipe 10 in the inner cavity of the heating box 1. A one-way valve is provided at the connection between the ventilation cylinder 101 and the gas storage pipe 10. A piston 102 is slidably installed in the middle of the inner cavity of the ventilation cylinder 101. One end of the piston 102 penetrates and slides on the side of the ventilation cylinder 101 away from the heating box 1.

[0042] When the PLC detects that the temperature in the heating furnace is too high, the PLC controls the motor to start. At this time, the motor starts to drive the driving plate 104 to rotate. When the driving plate 104 rotates, it drives the moving plate 105 to slide. When the moving plate 105 slides, it synchronously drives the piston 102 to compress downward. When the piston 102 compresses, it transmits the external gas into the gas storage pipe 10. The original high-temperature gas inside the gas storage pipe 10 is discharged into the treatment chamber 4 through the gas transmission pipe 107. By replacing the gas inside the gas storage pipe 10, the cooling of the heating furnace when the working temperature is too high is realized.

[0043] Above the ventilation cylinder 101, there is a convex plate 103 fixedly connected to the heating box 1. A driving plate 104 is rotatably installed on one side of the convex plate 103 close to the ventilation cylinder 101 through a motor. On the side of the driving plate 104 away from the convex plate 103, there is a moving plate 105 slidably connected to the outer wall of the ventilation cylinder 101. An arc-shaped through groove is opened on the moving plate 105. The cylinder on one side of the driving plate 104 is placed in the through groove and slides. One side of the lower part of the moving plate 105 is fixedly connected to the piston 102. The lower end face of the ventilation cylinder 101 is fixedly installed with a lower pipe 106 communicated with its inner cavity. One side of the gas storage pipe 10 is fixedly installed with a gas transmission pipe 107. The end of the gas transmission pipe 107 away from the gas storage pipe 10 is placed in the treatment chamber 4.

[0044] Between the ventilation component and the water replacement component, there is a control cylinder 14 fixedly connected to the heating box 1. An inverted L-shaped plate 141 is fixedly installed in the upper part of the inner cavity of the control cylinder 14. One end of the lower pipe 106 away from the ventilation cylinder 101 is communicated with the inner cavity of the control cylinder 14. A moving plug 142 is slidably installed on one side of the inverted L-shaped plate 141 close to the lower pipe 106. One side of the moving plug 142 is tapered. A spring is jointly connected between the lower end face of the moving plug 142 and the inverted L-shaped plate 141. A vertical side groove 143 is opened on the side of the control cylinder 14 away from the heating box 1. One side of the lower end face of the moving plug 142 is fixedly installed with a U-shaped plate 144. The U-shaped plate 144 is slidably connected in the side groove 143.

[0045] The water replacement component includes a support plate 15. The support plate 15 is fixedly connected to the heating box 1. A water supply tank 151 is fixedly installed on the upper end face of the support plate 15. The water supply tank 151 stores water for quickly replacing water and cooling when the temperature inside the heating box 1 is too high. The lower end of the water supply tank 151 is fixedly installed with a water outlet plate 152 communicated with its inner cavity.

[0046] One side of the water outlet plate 152 away from the heating box 1 is provided with a through port, and an L-shaped plug 153 is slidably installed in the through port. One side of the plug 153 is fixedly connected to the U-shaped plate 144. A water guide plate 154 fixedly connected to the heating box 1 is provided below the water outlet plate 152. A water supply pipe 155 is fixedly installed on one side of the water guide plate 154 close to the heating box 1. One end of the water supply pipe 155 away from the water guide plate 154 is connected to the water storage ring 11.

[0047] When the piston 102 compresses downward, it can exchange the gas inside the gas storage pipe 10. At the same time, when the piston 102 presses down, the air pressure pushes the moving plug 142 downward. At this time, the water pump is turned on to discharge the hot water in the water storage ring 11 to the treatment chamber 4 through the water exchange pipe 111. The moving plug 142 drives the plug 153 to move downward through the U-shaped plate 144. At this time, the cold water in the water supply tank 151 passes through the water outlet plate 152, the through port, the water guide plate 154, and finally is conveyed into the water storage ring 11 through the water supply pipe 155. By injecting cold water into the water storage ring 11, on the one hand, it cooperates with the gas exchange inside the gas storage pipe 10 to double-cool the heating box 1, and on the other hand, the exchanged hot water is discharged into the treatment chamber 4 to further accelerate the heating of the clear water inside the treatment chamber 4, so that the heat generated when the heating furnace works is recycled multiple times.

[0048] The blocking unit includes an arc-shaped plate 21. The arc-shaped plate 21 is located inside the transmission box 2 and is slidably connected to it. An arc-shaped tooth groove 211 is formed in the middle of one side of the arc-shaped plate 21 close to the heating box 1. One side of the tooth groove 211 is provided with a regulating rod 212 rotatably connected to the transmission box 2. A control wheel 213 is fixedly installed at the lower end of the regulating rod 212. The control wheel 213 is fixedly connected to the regulating rod 212, and the control wheel 213 meshes with the tooth groove 211.

[0049] When discharging and reusing the hot air in the heating box 1, by rotating the regulating rod 212, when the regulating rod 212 rotates, it synchronously drives the control wheel 213 to rotate. When the control wheel 213 rotates, it drives the arc-shaped plate 21 to rotate along the axis of the transmission box 2 by meshing with the tooth groove 211, so as to realize the discharge and reuse of the hot air inside the heating box 1. And by controlling the rotation of the regulating rod 212, the rotation angle of the arc-shaped plate 21 can also be adjusted, so that the discharge rate of the hot air in the heating box 1 can be controllably adjusted and discharged, making the whole device controllable when discharging and reusing the hot air.

[0050] A center rod 22 is rotatably installed in the middle of the transmission box 2, and a shaped frame 221 is circumferentially installed on the outside of the center rod 22. A front frame 222 is provided on the side of the shaped frame 221 away from the center rod 22, and a spring is commonly connected between the front frame 222 and the shaped frame 221. A primary filter plate 223 is detachably installed in the middle of the front frame 222 and the shaped frame 221, and grooves 224 are symmetrically provided on the side of the front frame 222 away from the shaped frame 221, a stopper 225 is slidably installed in the groove 224, and a spring is commonly connected between the stopper 225 and the groove 224.

[0051] After the arc plate 21 is turned open, the gas in the heating box 1 spreads to the transmission box 2. At this time, the hot gas impacts the primary filter plate 223 during the circulation process. The center rod 22 rotates under the impact of the hot gas. At this time, multiple primary filter plates 223 rotate in turn to resist the metal in the hot gas. The hot gas filtered by the primary filter plate 223 flows to the filter box 3, and then the hot air filtered by the primary filter plate 223 rises and passes through the resistance plate 31 to filter the hot air spreading upward again, and the metal impurities in the hot gas are resisted. The hot gas after multiple filtrations finally flows into the processing bin 4 through the side pipe 36, and finally the clean water in the processing bin 4 is heated in a water bath.

[0052] After the hot gas is discharged, the door on the side of the transmission box 2 is moved, and then the sliding stopper 225 is moved, and then the primary filter plate 223 is replaced and installed, so as to ensure the filtering effect when the hot gas in the heating furnace is recovered, and avoid the saturation of the accumulated metal impurities caused by long-term hot gas filtration.

[0053] The cleaning assembly includes a baffle plate 31 installed in the middle of the inner cavity of the filter box 3, a cover plate for covering the filter box 3 is detachably installed above the baffle plate 31, the top of the center rod 22 passes through the transmission box 2 and a center wheel 32 is fixedly installed, tooth plates 33 slidably connected to the transmission box 2 are provided on both sides of the center wheel 32, connecting plates 34 are fixedly installed on the upper end surfaces of the tooth plates 33 on both sides, a cleaning brush 35 is fixedly installed on one end of the connecting plate 34, and a plurality of side pipes 36 connected to the filter box 3 are provided on one side above the baffle plate 31, and the side pipes 36 are placed in the water in the processing chamber 4 away from one end of the filter box 3.

[0054] When the hot air flow drives the center rod 22 to rotate, the center wheel 32 rotates synchronously. The rotation of the center wheel 32 drives the tooth plates 33 on both sides to move relative to each other. At this time, the two connecting plates 34 respectively drive the cleaning brushes 35 on both sides to clear and clean the baffle plate 31 to prevent the baffle plate 31 from being blocked when the hot air flows upward and affecting the flow rate of the hot air.

[0055] A one-way valve is provided on the gas delivery pipe 107 near the gas storage pipe 10 . The gas storage pipe 10 is a threaded annular structure. A water pump is provided on one end of the water exchange pipe 111 near the heating box 1 .

[0056] By setting a one-way valve in the gas transmission pipe 107, the hot gas is prevented from flowing back to the gas storage pipe 10 when the gas transmission pipe 107 transmits hot gas. At the same time, the threaded arrangement of the gas storage pipe 10 can increase the cooling efficiency on the one hand and slow down the mixing speed of the cold and hot gases in the gas storage pipe 10 during heat exchange on the other hand.

[0057] When the present invention is in use, the PLC detects that when the temperature in the heating furnace is too high, the PLC controls the motor to start. At this time, the motor starts to drive the driving plate 104 to rotate. When the driving plate 104 rotates, it drives the moving plate 105 to slide. When the moving plate 105 slides, it synchronously drives the piston 102 to compress downward. When the piston 102 compresses, the external gas is transmitted into the gas storage pipe 10. The original high-temperature gas in the gas storage pipe 10 is discharged to the treatment chamber 4 through the gas transmission pipe 107. By replacing the gas inside the gas storage pipe 10, at the same time, when the piston 102 presses down, the air pressure pushes the moving plug 142 downward. At this time, the water pump starts to discharge the hot water in the water storage ring 11 to the treatment chamber 4 through the water exchange pipe 111. The moving plug 142 drives the blocking member 153 to move downward through the U-shaped plate 144. At this time, the cold water in the water supply tank 151 passes through the water outlet plate 152, the through port, the water guide plate 154, and finally is transported into the water storage ring 11 through the water supply pipe 155. By injecting cold water into the water storage ring 11, on the one hand, it cooperates with the internal gas replacement of the gas storage pipe 10 to perform double cooling on the heating box 1, and on the other hand, the exchanged hot water is discharged into the treatment chamber 4 to further accelerate the heating of the clear water inside the treatment chamber 4, so that the heat generated when the heating furnace works is recycled multiple times;

[0058] When discharging and reusing the hot gas in the heating box 1, by rotating the adjustment rod 212, when the adjustment rod 212 rotates, it synchronously drives the control wheel 213 to rotate. When the control wheel 213 rotates, it drives the arc plate 21 to rotate along the axis of the transmission box 2 by engaging with the tooth groove 211, so as to realize the discharge and reuse of the hot gas inside the heating box 1. And by controlling the rotation of the adjustment rod 212, the rotation angle of the arc plate 21 can also be adjusted, so that the discharge rate of the hot gas in the heating box 1 can be controllably adjusted and discharged, making the whole device controllable when discharging and reusing the hot gas. After the arc plate 21 rotates away, the gas in the heating box 1 spreads into the transmission box 2. At this time, the hot gas flow impacts the primary filter plate 223 during the process. The central rod 22 rotates under the impact of the hot gas. At this time, multiple primary filter plates 223 rotate in turn to block metals and the like in the hot gas. The hot gas filtered by the primary filter plate 223 flows into the filter box 3. Subsequently, the hot gas passing through the primary filter plate 223 rises and passes through the baffle plate 31 to be filtered again for the upward spreading hot gas, blocking the metal impurities in the hot gas. The hot gas after multiple filtrations finally flows into the treatment chamber 4 through the side pipe 36, and finally performs water bath heating on the clear water in the treatment chamber 4;

[0059] When the hot gas flow drives the center rod 22 to rotate, the center wheel 32 rotates synchronously, and the rotation of the center wheel 32 drives the tooth plates 33 on both sides to move relative to each other. At this time, the two connecting plates 34 respectively drive the cleaning brushes 35 on both sides to clear and clean the baffle plate 31 to prevent the baffle plate 31 from being blocked when the hot gas flows upward and affecting the flow rate of the hot gas. A one-way valve is set in the gas pipe 107 to prevent the hot gas from flowing back to the gas storage pipe 10 when the gas pipe 107 transmits the hot gas. At the same time, the gas storage pipe 10 is provided with a threaded arrangement, which can increase the cooling efficiency on the one hand, and slow down the mixing speed of the cold and hot gases in the gas storage pipe 10 during heat exchange on the other hand;

[0060] After the hot gas is discharged, the box door on the side of the transmission box 2 is moved, and then the sliding stopper 225 is moved, and then the primary filter plate 223 is replaced and installed, so as to ensure the filtering effect when the hot gas in the heating furnace is recovered, and avoid the saturation of the metal impurities accumulated due to long-term hot gas filtration.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An energy-saving heating furnace based on PLC automatic temperature control, comprising a heating box (1), characterized in that: A transmission box (2) placed on the ground is fixedly installed on one side of the heating box (1); a barrier unit is provided on the inner cavity of the transmission box (2) near the heating box (1); a filter box (3) connected to the interior of the transmission box (2) is fixedly installed on the side of the transmission box (2) away from the heating box (1); a processing chamber (4) is fixedly installed on the side of the filter box (3) away from the transmission box (2); water is contained in the processing chamber (4) so ​​as to recover the waste heat in the heating furnace for water bath heating, thereby realizing the reuse of the heat; an annular water storage ring (11) is fixedly installed at the lower part of the inner cavity of the heating box (1); a water storage ring (11) is fixedly installed on one side of the water storage ring (11) A water exchange pipe (111) is installed, a conduction pipe (12) connected to the side wall of the inner cavity of the heating box (1) is provided on the upper part of the water storage circle (11), a plurality of annularly distributed steam circles (13) are installed between the conduction pipe (12) and the water storage circle (11), an air storage pipe (10) fixedly connected to the inner cavity of the heating box (1) is provided on the upper part of the steam circle (13), box doors are provided in the middle of one side of the heating box (1) and the transmission box (2), a cooling unit is provided on the side of the heating box (1) away from the transmission box (2), the cooling unit includes a ventilation component and a water exchange component, and a cleaning component is provided on the upper part of the interior of the filter box (3).

2. The energy-saving heating furnace based on PLC automatic temperature control according to claim 1 is characterized in that: The ventilation assembly comprises a ventilation cylinder (101) mounted on the side wall of the heating box (1); the side of the ventilation cylinder (101) close to the heating box (1) is connected to the gas storage pipe (10) in the inner cavity of the heating box (1); a one-way valve is provided at the connection point between the ventilation cylinder (101) and the gas storage pipe (10); a piston (102) is slidably mounted in the middle of the inner cavity of the ventilation cylinder (101); one end of the piston (102) penetrates and slides on the side of the ventilation cylinder (101) away from the heating box (1).

3. The energy-saving heating furnace based on PLC automatic temperature control according to claim 2 is characterized in that: A convex plate (103) fixedly connected to the heating box (1) is provided above the ventilation cylinder (101); a driving plate (104) is installed on the side of the convex plate (103) close to the ventilation cylinder (101) through a motor rotation; a movable plate (105) is provided on the side of the driving plate (104) away from the convex plate (103) and is slidably connected to the outer wall of the ventilation cylinder (101); an arc-shaped through groove is opened on the movable plate (105); a cylinder on one side of the driving plate (104) is placed in the through groove for sliding; a lower part of one side of the movable plate (105) is fixedly connected to the piston (102); a lower pipe (106) communicating with the inner cavity of the ventilation cylinder (101) is fixedly installed on the lower end surface of the ventilation cylinder (101); a gas supply pipe (107) is fixedly installed on one side of the gas storage pipe (10); and an end of the gas supply pipe (107) away from the gas storage pipe (10) is placed in the processing chamber (4).

4. The energy-saving heating furnace based on PLC automatic temperature control according to claim 1 is characterized in that: A control cylinder (14) fixedly connected to the heating tank (1) is provided between the ventilation component and the water changing component. An inverted L-shaped plate (141) is fixedly installed at the upper part of the inner cavity of the control cylinder (14). One end of the lower pipe (106) far from the ventilation cylinder (101) communicates with the inner cavity of the control cylinder (14). A moving plug (142) is slidably installed on one side of the inverted L-shaped plate (141) close to the lower pipe (106). One side of the moving plug (142) is tapered. A spring is jointly connected between the lower end surface of the moving plug (142) and the inverted L-shaped plate (141). A vertical side groove (143) is formed on one side of the control cylinder (14) far from the heating tank (1). A U-shaped plate (144) is fixedly installed on one side of the lower end surface of the moving plug (142). The U-shaped plate (144) is slidably connected in the side groove (143).

5. The energy-saving heating furnace based on PLC automatic temperature control according to claim 1 is characterized in that: The water changing component includes a support plate (15). The support plate (15) is fixedly connected to the heating tank (1). A water supply tank (151) is fixedly installed on the upper end surface of the support plate (15). Water for quickly changing water and reducing the temperature when the temperature inside the heating tank (1) is too high is stored inside the water supply tank (151). A water outlet plate (152) communicated with the inner cavity of the water supply tank (151) is fixedly installed at the lower end of the water supply tank (151).

6. The energy-saving heating furnace based on PLC automatic temperature control according to claim 5 is characterized in that: A through hole is provided on one side of the water outlet plate (152) far from the heating tank (1). An L-shaped blocking member (153) is slidably installed in the through hole. One side of the blocking member (153) is fixedly connected to the U-shaped plate (144). A water guide plate (154) fixedly connected to the heating tank (1) is provided below the water outlet plate (152). A water supply pipe (155) is fixedly installed on one side of the water guide plate (154) close to the heating tank (1). One end of the water supply pipe (155) far from the water guide plate (154) is connected to the water storage ring (11).

7. The energy-saving heating furnace based on PLC automatic temperature control according to claim 1 is characterized in that: The blocking unit includes an arc-shaped plate (21). The arc-shaped plate (21) is located inside the transmission box (2) and is slidably connected to it. An arc-shaped tooth groove (211) is formed in the middle of one side of the arc-shaped plate (21) close to the heating tank (1). A regulating rod (212) rotatably connected to the transmission box (2) is provided on one side of the tooth groove (211). A control wheel (213) is fixedly installed at the lower end of the regulating rod (212). The control wheel (213) is fixedly connected to the regulating rod (212), and the control wheel (213) meshes with the tooth groove (211).

8. The energy-saving heating furnace based on PLC automatic temperature control according to claim 1 is characterized in that: A central rod (22) is rotatably installed in the middle of the transmission box (2). A U-shaped frame (221) is circumferentially installed outside the central rod (22). A front frame (222) is provided on one side of the U-shaped frame (221) far from the central rod (22). A spring is jointly connected between the front frame (222) and the U-shaped frame (221). A primary filter plate (223) is detachably installed in the middle of the front frame (222) and the U-shaped frame (221). Grooves (224) are symmetrically formed on one side of the front frame (222) far from the U-shaped frame (221). A blocking member (225) is slidably installed in the grooves (224). A spring is jointly connected between the blocking member (225) and the grooves (224).

9. The energy-saving heating furnace based on PLC automatic temperature control according to claim 1 is characterized in that: The cleaning assembly comprises a baffle plate (31) installed in the middle of the inner cavity of the filter box (3), a cover plate for covering the filter box (3) is detachably installed above the baffle plate (31), a center wheel (32) is fixedly installed on the top end of the center rod (22) passing through the transmission box (2), tooth plates (33) slidably connected to the transmission box (2) are provided on both sides of the center wheel (32), connecting plates (34) are fixedly installed on the upper end surfaces of the tooth plates (33) on both sides, and a cleaning brush (35) is fixedly installed on one end of the connecting plate (34), and a plurality of side pipes (36) connected to the filter box (3) are provided on one side above the baffle plate (31), and the side pipes (36) are placed in the water in the processing chamber (4) away from one end of the filter box (3).

10. The energy-saving heating furnace based on PLC automatic temperature control according to claim 3 is characterized in that: A one-way valve is provided on one side of the gas delivery pipe (107) close to the gas storage pipe (10); the gas storage pipe (10) is a threaded annular structure; and a water pump is provided on one end of the water exchange pipe (111) close to the heating box (1).

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