A kiln with heat insulation and energy saving functions

Abstract

The present invention relates to the technical field of kilns, and specifically to a kiln with heat insulation and energy-saving functions, comprising a kiln body, a processing cavity arranged in the kiln body, a pressure relief portion installed on the upper side of the kiln body, a pressure relief cavity arranged in the pressure relief portion, a pressure relief hole connected to the processing cavity arranged on the lower cavity wall of the pressure relief cavity, a pressure relief plate for closing the pressure relief hole arranged on the lower cavity wall of the pressure relief cavity, a first electric telescopic rod installed in the pressure relief cavity, and a pressure hole arranged at the end along the axial direction of the first electric telescopic rod, a pressure rod slidingly arranged in the pressure hole, the upper end of the pressure rod connected to the bottom of the pressure hole through a first spring in the pressure hole, the lower end of the pressure rod and the upper side of the pressure relief plate; a first exhaust pipe installed on the cavity wall of the pressure relief cavity, an exhaust fan installed in the first exhaust pipe. The problem in the prior art that after the kiln is processed, the high-temperature gas discharged through the kiln mouth position is easy to cause high-temperature burns to people near the kiln mouth is solved.

Description

Technical Field

[0001] The invention relates to the technical field of kilns, and in particular to a kiln with heat insulation and energy-saving functions. Background Art

[0002] Industrial kilns are thermal equipment that heat materials or workpieces. Industrial furnaces are divided into two categories according to the heating method: one is a flame furnace, which uses the heat from the combustion of solid, liquid or gaseous fuels in the furnace to heat the workpiece; the second is an electric furnace, which converts electrical energy into heat for heating. When the existing industrial furnace is calcining, as the internal temperature continues to rise, the internal air pressure increases, which is prone to the risk of furnace explosion; and industrial furnaces generally use valves for pressure relief, and the pressure continues to increase in the furnace. Therefore, multiple pressure relief operations are often required in one heating process.

[0003] For example, the Chinese invention patent application with the announcement number CN110332804B discloses an explosion-proof safety industrial furnace, including a shell, a sealing cover, a power-on port and a fixing frame, the right side of the shell is movably connected with a sealing cover through a rotating shaft, the inner side of the sealing cover is fixedly connected with a sealing plate, the upper and lower ends of the shell are embedded with power-on ports, the inner side of the power-on ports are provided with wires, the front and rear sides of the bottom of the outer wall of the shell are fixedly connected with fixing frames, the middle part of the right side of the inner wall of the shell is embedded with a combustion chamber, the inner wall of the combustion chamber is embedded with electric heating pipes, the upper and lower ends of the electric heating pipes are fixedly connected with a base, the outer side of the base is fixedly connected with a conductive column, the outer side of the conductive column is fixedly connected with fasteners, the inner wall of the shell is embedded with a heat insulation layer, the left side of the combustion chamber is movably connected with a movable baffle, and the front and rear sides of the bottom of the movable baffle are movably connected with rollers. The technical solution recorded in the patent is realized by transmission between various parts when the pressure is released.

[0004] After the product is sintered, it needs to be taken out of the kiln. However, at this time, the inside of the kiln is in a high temperature state and is full of high-temperature gases. The presence of these high-temperature gases poses a serious threat to the safety of operators.

[0005] At present, in order to prevent operators from being harmed by high-temperature gases, the common practice is to cut off the power supply to cool down the kiln. However, most industrial kilns with pressure relief mechanisms generally only discharge part of the high-temperature gases under high pressure, and the cooling method after processing is to dissipate heat through the kiln mouth of the kiln, and discharge the high-temperature gases through the kiln mouth, which can easily cause high-temperature burns to people near the kiln mouth. Summary of the invention

[0006] The purpose of the present invention is to provide a kiln with heat insulation and energy-saving functions to solve the problem in the prior art that after the kiln is processed, high-temperature gas discharged through the kiln mouth can easily cause high-temperature burns to people near the kiln mouth.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A kiln with heat insulation and energy-saving functions comprises a kiln body, a processing chamber is arranged in the kiln body, an electric heating wire is arranged on the cavity wall of the processing chamber, an entrance connected to the processing chamber and a furnace door for closing the entrance are arranged on the front side of the kiln body, a track is installed at the cavity bottom of the processing chamber, a storage plate is slidably installed on the track, a pressure relief part is installed on the upper side of the kiln body, a pressure relief chamber is arranged in the pressure relief part, a pressure relief hole connected to the processing chamber is arranged on the lower cavity wall of the pressure relief chamber, a pressure relief plate for closing the pressure relief hole is arranged on the lower cavity wall of the pressure relief chamber, and one side of the pressure relief plate is hinged It is rotatably connected to the lower cavity wall of the pressure relief cavity; a first electric telescopic rod is installed in the pressure relief cavity, the fixed section of the first electric telescopic rod is arranged upward, and is movably connected to the cavity wall of the pressure relief cavity through the installation rod, the telescopic section of the first electric telescopic rod is arranged downward, and a pressure hole is arranged at the end along the axial direction of the first electric telescopic rod, a pressure rod is slidably arranged in the pressure hole, the upper end of the pressure rod is connected to the bottom of the pressure hole through a first spring in the pressure hole, and the lower end of the pressure rod is connected to the upper side of the pressure relief plate; a first exhaust pipe is installed on the cavity wall of the pressure relief cavity, and an exhaust fan is installed in the first exhaust pipe.

[0009] A further technical solution is that one end of the mounting rod is connected to the cavity wall of the pressure relief chamber, a first half ring is arranged on the lower side of the mounting rod, a first circular ring is arranged on the fixed end of the first electric telescopic rod, and the first circular ring and the first half ring are movably connected; a second half ring is arranged on the upper side of the pressure relief plate at a position away from the hinge, a second circular ring is arranged at the lower end of the pressure rod, and the second circular ring and the second half ring are movably connected.

[0010] A further technical solution is that a sealing block matching the pressure relief hole is provided on the lower side of the pressure relief plate, and when the pressure relief plate is attached to the upper side of the pressure relief hole, the sealing block is sealed and clamped on the upper end of the pressure relief hole.

[0011] A further technical solution is that the exhaust fan includes a first motor, a mounting bracket, a rotating shaft and fan blades, the mounting bracket is installed in the first exhaust pipe, a steel ball bearing is installed in the middle of the mounting bracket, the rotating shaft is installed on the inner ring of the steel ball bearing, and both ends of the rotating shaft are respectively placed on both sides of the steel ball bearing, the fan blades are installed at one end of the rotating shaft, and a first sprocket is installed at the other end of the rotating shaft, the first motor is installed on the outside of the first exhaust pipe outside the pressure relief chamber, a second sprocket is installed on the output shaft of the first motor, and a through hole penetrating the inside and outside of the first exhaust pipe is provided on the first exhaust pipe, the first sprocket and the second sprocket are connected by a chain drive, and the chain passes through the through hole.

[0012] A further technical solution is that a first pressure sensor is installed at the bottom of the pressure hole, the upper end of the first spring is connected to the first pressure sensor, and the lower end of the first spring is connected to the upper end of the pressure rod.

[0013] A further technical solution is that a waste heat chamber is also provided in the pressure relief part, a water tank is provided in the waste heat chamber, a connecting pipe is vertically provided on the top of the water tank, the upper and lower ends of the connecting pipe are closed, the lower end of the connecting pipe passes through the water tank and is close to the bottom of the water tank, and the side wall of the connecting pipe is provided with a plurality of air outlets that pass through the inside and outside at a position near the lower end, and the end of the first exhaust pipe away from the pressure relief chamber is connected to the connecting pipe above the water tank; a second exhaust pipe connected to the inside of the water tank is vertically provided on the upper side of the water tank.

[0014] A further technical solution is that the connecting pipe includes an upper tube body and a lower tube body, the upper tube body is installed on the upper side of the water tank and passes into the water tank, the lower tube body is placed in the water tank, and the upper end outer wall of the lower tube body is horizontally rotatably connected to the lower end inner wall of the lower tube body, and the upper end of the lower tube body and the lower end of the upper tube body are connected to each other; a second motor is installed in the upper tube body, and the output shaft of the second motor is arranged downward, and the output shaft of the second motor extends downward to be connected to the inner wall of the lower tube body, so as to drive the lower tube body to rotate; a plurality of air outlets are arranged on the outer wall of the lower tube body near the lower end.

[0015] A further technical solution is that the water tank partially passes through the waste heat chamber and is placed on the outside of the pressure relief part; a drain pipe connected to the water tank is provided at a position close to the bottom of the water tank on the side of the water tank placed on the outside of the pressure relief part; a filter plate is provided at one end of the drain pipe placed in the water tank; a sewage pipe is vertically provided at the position of the drainage pipe outlet at the bottom of the water tank; two valves for controlling the on-off of the sewage pipe are provided at intervals below the water tank; the inner bottom of the water tank gradually tilts downward toward the position of the sewage pipe, and a water inlet pipe is provided on the side wall of the water tank.

[0016] A further technical solution is that a cleaning hole communicating with the inside and outside is provided on the top of the water tank at a position aligned with the filter plate, a cleaning block is provided in the cleaning hole for sliding up and down, a plastic scraper is provided on the lower side of the cleaning block, and a second electric telescopic rod for driving the cleaning block to move up and down is vertically installed above the water tank; the filter plate is inclined from top to bottom toward the middle of the bottom of the water tank, the lower end of the plastic scraper is aligned with the upper end of the filter plate toward the middle of the water tank, and a transition inclined block is provided on the inner wall of the water tank on the upper side of the filter plate.

[0017] A further technical solution is that an adjusting cavity is provided in the cleaning block, a connecting hole aligned with the transition inclined block is provided on the lower side of the cleaning block, a third electric telescopic rod is provided on the cavity top of the adjusting cavity aligned with the connecting hole, the telescopic section of the third electric telescopic rod is arranged downward, a plastic scraper is vertically arranged in the adjusting cavity, the upper end of the plastic scraper is connected to the lower end of the third electric telescopic rod, and the lower end of the plastic scraper passes through the connecting hole and is placed below the connecting hole; a detection block is installed at the cavity bottom of the adjusting cavity on the side of the plastic scraper away from the inner wall of the water tank, a detection hole is provided on the side of the detection block facing the plastic scraper, a detection rod is slidably provided in the detection hole, a second pressure sensor is provided at the bottom of the detection hole, one end of the detection rod placed in the detection hole is connected to the second pressure sensor through a second spring, and one end of the detection rod placed outside the detection hole is installed with a roller, and the surface of the roller and the plastic scraper are in contact with each other.

[0018] Compared with the prior art, the present invention has at least one of the following beneficial effects: 1. With the cooperation of the pressure relief hole, the pressure relief plate, the first electric telescopic rod, the pressure rod and the first spring, it can play the role of a pressure relief valve when the pressure in the processing chamber increases. Specifically, when the temperature in the processing chamber gradually rises, the pressure in the processing chamber will increase with the expansion of the internal gas. After the pressure exceeds the sum of the downward pressure on the pressure relief hole generated by the weight of the pressure relief plate itself and the downward pressure on the pressure relief plate generated by the first spring pushing the pressure rod, the pressure relief plate will move upward around the hinge, thereby connecting the pressure relief hole and the pressure relief chamber, so that the excess gas in the processing chamber is discharged with the help of the pressure relief chamber. After a certain amount of gas is discharged, the pressure in the processing chamber is reduced, and the pressure relief plate will re-block the pressure relief hole; 2. With the help of the first exhaust pipe and the exhaust fan, the excess gas in the pressure relief chamber can be discharged. body, to avoid the pressure rise in the pressure relief chamber; 3. By setting the first electric telescopic rod, after the processing is completed, the pressure relief hole can be opened by shortening the first electric telescopic rod, and the exhaust fan can be started to discharge the high-temperature gas in the processing chamber from the first exhaust pipe, and when the furnace door is opened, the negative pressure formed by the exhaust in the processing chamber is used, and cold air will enter from the furnace door to compensate for the high-temperature gas discharged from the pressure relief hole, so as to avoid the high-temperature gas from directly overflowing from the furnace door, and the operator is separated from the high-temperature gas in the processing chamber to avoid causing harm to the surrounding operators, thereby solving the problem in the prior art that after the kiln is processed, the high-temperature gas discharged through the kiln mouth position is easy to cause high-temperature burns to people near the kiln mouth; 4. By controlling the length of the first electric telescopic rod, the compression amount of the first spring can be controlled to control the pressure relief critical value of the processing chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of a kiln with heat insulation and energy-saving functions according to the present invention.

[0020] Figure 2 The figure is a schematic diagram of the side slope of a kiln with heat insulation and energy saving functions according to the present invention.

[0021] Figure 3 for Figure 2 A partial enlarged schematic diagram of the area marked A in the middle.

[0022] Figure 4 for Figure 2 A partial enlarged schematic diagram of the area marked B in the middle.

[0023] Figure 5 It is a schematic diagram of the rear side of a kiln with heat insulation and energy saving functions according to the present invention.

[0024] Figure 6 The present invention is a schematic cross-sectional view of a water tank of a kiln with heat insulation and energy-saving functions.

[0025] Figure 7 for Figure 6 A partial enlarged schematic diagram of the area marked C in the middle.

[0026] Icons: 1- furnace body, 2- processing chamber, 3- electric heating wire, 4- entrance, 5- furnace door, 6- track, 7- storage plate, 8- pressure relief part, 9- pressure relief chamber, 10- pressure relief hole, 11- pressure relief plate, 12- hinge, 13- first electric telescopic rod, 14- mounting rod, 15- pressure hole, 16- pressure rod, 17- first spring, 18- first exhaust pipe, 19- first half ring, 20- first circular ring, 21- second half ring, 22- second circular ring, 23- sealing block, 24- first motor, 25- mounting bracket, 26- rotating shaft, 27- fan blade, 28- steel ball bearing, 29- first sprocket, 30- second sprocket, 31- chain, 32- through Hole, 33-first pressure sensor, 34-waste heat chamber, 35-water tank, 36-connecting pipe, 37-air outlet, 38-second exhaust pipe, 39-upper tube body, 40-lower tube body, 41-second motor, 42-drain pipe, 43-filter plate, 44-drain pipe, 45-water inlet pipe, 46-cleaning hole, 47-cleaning block, 48-plastic scraper, 49-second electric telescopic rod, 50-transition inclined block, 51-adjusting chamber, 52-connecting hole, 53-third electric telescopic rod, 54-detection block, 55-detection hole, 56-detection rod, 57-second pressure sensor, 58-second spring, 59-roller, 60-ventilation pipe, 61-temperature sensor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Figures 1 to 7 An embodiment of the present invention is shown.

[0029] Embodiment 1:

[0030] like Figure 1-4As shown, a kiln with heat insulation and energy-saving functions includes a kiln body 1, a processing chamber 2 is arranged in the kiln body 1, an electric heating wire 3 is arranged on the cavity wall of the processing chamber 2, an entrance 4 connected to the processing chamber 2 and a furnace door 5 for closing the entrance 4 are arranged on the front side of the kiln body 1, a track 6 is installed at the cavity bottom of the processing chamber 2, a storage plate 7 is slidably installed on the track 6, a pressure relief part 8 is installed on the upper side of the kiln body 1, a pressure relief chamber 9 is arranged in the pressure relief part 8, a pressure relief hole 10 connected to the processing chamber 2 is arranged on the lower cavity wall of the pressure relief chamber 9, a pressure relief plate 11 for closing the pressure relief hole 10 is arranged on the lower cavity wall of the pressure relief chamber 9, and one side of the pressure relief plate 11 is connected by a hinge 12 and The lower cavity wall of the pressure relief cavity 9 is rotatably connected; a first electric telescopic rod 13 is installed in the pressure relief cavity 9, the fixed section of the first electric telescopic rod 13 is arranged upward, and is movably connected to the cavity wall of the pressure relief cavity 9 through a mounting rod 14, the telescopic section of the first electric telescopic rod 13 is arranged downward, and a pressure hole 15 is arranged at the end along the axial direction of the first electric telescopic rod 13, a pressure rod 16 is slidably arranged in the pressure hole 15, the upper end of the pressure rod 16 is connected to the bottom of the pressure hole 15 through a first spring 17 in the pressure hole 15, and the lower end of the pressure rod 16 is connected to the upper side of the pressure relief plate 11; a first exhaust pipe 18 is installed on the cavity wall of the pressure relief cavity 9, and an exhaust fan is installed in the first exhaust pipe 18. With the cooperation of the pressure relief hole 10, the pressure relief plate 11, the first electric telescopic rod 13, the pressure rod 16 and the first spring 17, when the pressure in the processing chamber 2 increases, it can play the role of a pressure relief valve. Specifically, when the temperature in the processing chamber 2 gradually rises, the pressure in the processing chamber 2 will increase with the expansion of the internal air. After the pressure exceeds the sum of the downward pressure on the pressure relief hole 10 generated by the weight of the pressure relief plate 11 itself and the downward pressure on the pressure relief plate 11 generated by the first spring 17 pushing the pressure rod 16, the pressure relief plate 11 will move upward around the hinge 12, thereby connecting the pressure relief hole 10 and the pressure relief chamber 9, so that the excess air in the processing chamber 2 is discharged through the pressure relief chamber 9. After a certain amount of air is discharged, the pressure in the processing chamber 2 is reduced, and the pressure relief plate 11 will block the pressure relief hole 10 again. With the help of the first exhaust pipe 18 and the exhaust fan, the excess air in the pressure relief chamber 9 can be discharged to prevent the pressure in the pressure relief chamber 9 from rising. By setting the first electric telescopic rod 13, after the processing is completed, the pressure relief hole 10 can be opened by shortening the first electric telescopic rod 13, and the exhaust fan can be started to discharge the high-temperature gas in the processing chamber 2 from the first exhaust pipe 18, and when the furnace door 5 is opened, the negative pressure formed by the exhaust in the processing chamber 2 is used, and cold air will enter from the furnace door 5 to compensate for the high-temperature gas discharged from the pressure relief hole 10, so as to avoid the high-temperature gas from directly overflowing from the furnace door 5, and to separate the operator from the high-temperature gas in the processing chamber 2, so as to avoid causing harm to the surrounding operators. By controlling the length of the first electric telescopic rod 13, the compression amount of the first spring 17 can be controlled to control the critical value of the pressure relief of the processing chamber 2. The inner walls of the processing chamber 2 and the furnace door 5 are provided with a heat insulation layer to isolate the heat transfer between the inside and the outside, so as to avoid the loss of heat energy inside the processing chamber 2.

[0031] One end of the mounting rod 14 is connected to the cavity wall of the pressure relief cavity 9, a first half ring 19 is arranged on the lower side of the mounting rod 14, a first circular ring 20 is arranged on the fixed end of the first electric telescopic rod 13, and the first circular ring 20 is movably connected to the first half ring 19; a second half ring 21 is arranged on the upper side of the pressure relief plate 11 at a position away from the hinge 12, a second circular ring 22 is arranged on the lower end of the pressure rod 16, and the second circular ring 22 is movably connected to the second half ring 21. Through the cooperation of the first half ring 19 and the first circular ring 20, and the cooperation of the second half ring 21 and the second circular ring 22, the angle of the first electric telescopic rod 13 can be allowed to change when the first electric telescopic rod 13 is extended and retracted, and the pressure relief plate 11 can be well driven to open and close.

[0032] A sealing block 23 matching the pressure relief hole 10 is provided on the lower side of the pressure relief plate 11. When the pressure relief plate 11 is attached to the upper side of the pressure relief hole 10, the sealing block 23 is sealed and clamped on the upper end of the pressure relief hole 10. By providing the sealing block 23, the sealing between the pressure relief plate 11 and the pressure relief hole 10 can be improved to prevent air leakage when the processing chamber 2 is working.

[0033] The exhaust fan includes a first motor 24, a mounting bracket 25, a rotating shaft 26 and a fan blade 27. The mounting bracket 25 is installed in the first exhaust pipe 18. A steel ball bearing 28 is installed in the middle of the mounting bracket 25. The rotating shaft 26 is installed on the inner ring of the steel ball bearing 28, and the two ends of the rotating shaft 26 are respectively placed on both sides of the steel ball bearing 28. The fan blade 27 is installed at one end of the rotating shaft 26, and a first sprocket 29 is installed at the other end of the rotating shaft 26. The first motor 24 is installed on the outside of the first exhaust pipe 18 outside the pressure relief chamber 9. A second sprocket 30 is installed on the output shaft of the first motor 24. The first exhaust pipe 18 is provided with a through hole 32 that passes through the inside and outside. The first sprocket 29 and the second sprocket 30 are connected by a chain 31 for transmission, and the chain 31 passes through the through hole 32. During exhaust or pressure relief, the temperature of the air entering the first exhaust pipe 18 is generally several hundred degrees or even higher. If the first motor 24 is arranged in the first exhaust pipe 18, it will cause the first motor 24 to work in a high temperature environment and cause a malfunction. Therefore, the fan blades 27 and the first motor 24 are installed separately, and the fan blades 27 are driven by the chain 31 to rotate in the first exhaust pipe 18, thereby driving the air to flow at a high speed. The first motor 24 is placed outside the first exhaust pipe 18 to avoid direct contact with high-temperature air, thereby improving the service life of the first motor 24.

[0034] A first pressure sensor 33 is installed at the bottom of the pressure hole 15, the upper end of the first spring 17 is connected to the first pressure sensor 33, and the lower end of the first spring 17 is connected to the upper end of the pressure rod 16. By setting the first pressure sensor 33, when the first electric telescopic rod 13 is extended or shortened, the length of the pressure rod 16 entering the pressure hole 15 can be controlled, thereby controlling the length of the compressed first spring 17, and then controlling the pressure value of the first pressure sensor 33. The pressure value plus the downward pressure generated by the weight of the pressure relief plate 11 on the pressure relief hole 10 can well adjust the threshold value of the pressure relief.

[0035] Embodiment 2:

[0036] On the basis of Example 1, Figure 2 , 5As shown in Figures 6 and 7, a waste heat chamber 34 is further provided in the pressure relief portion 8, a water tank 35 is provided in the waste heat chamber 34, a connecting pipe 36 is vertically provided on the top of the water tank 35, the upper and lower ends of the connecting pipe 36 are closed, the lower end of the connecting pipe 36 passes through the water tank 35 and is close to the bottom of the water tank 35, a side wall of the connecting pipe 36 is provided with a plurality of air outlet holes 37 that pass through the inside and the outside at a position near the lower end, and the end of the first exhaust pipe 18 away from the pressure relief chamber 9 is connected to the connecting pipe 36 above the water tank 35; a second exhaust pipe 38 that is connected to the inside of the water tank 35 is vertically provided on the upper side of the water tank 35. When exhausting or relieving pressure, high-temperature air enters the connecting pipe 36 through the first exhaust pipe 18, and enters the water tank 35 through the air outlet 37 on the connecting pipe 36, and heat exchange is carried out by contacting with the water in the water tank 35 to heat the water. The air after the temperature is reduced is discharged through the second exhaust pipe 38, and in the process of heating the water, the dust mixed in the air will be adsorbed by the water to purify the quality of the discharged air. The heated hot water can be used as industrial hot water, which can save some energy and avoid heat energy waste. This way of heating water is limited to the product in the heating chamber. No harmful gases will be generated during the firing process. Only some dust or tank particles that are insoluble in water will be generated, which can be adsorbed in water and can be filtered. A vent pipe 60 that runs through the inside and outside is installed on the first exhaust pipe 18, and an electric valve that controls its on and off is installed on the vent pipe 60. Since the air temperature in the pressure relief chamber 9 is high when the pressure relief chamber 9 is relieving pressure or exhausting, the air is in an expanded state. When the pressure relief or exhausting is completed and the pressure relief plate 11 is closed, if the temperature in the pressure relief chamber 9 gradually decreases, the volume of the air in the pressure relief chamber 9 will be reduced, which will cause the first exhaust pipe 18 to inhale air, which will cause the connecting pipe 36 to absorb water and flow back into the first exhaust pipe 18. In order to avoid this situation, the vent pipe 60 is set to connect the first exhaust pipe 18 with the external air by opening the solenoid valve after the pressure relief or exhausting is completed, so that the external air can be inhaled to make up for the air in the pressure relief chamber 9. A temperature sensor 61 is installed in the first exhaust pipe 18. The temperature sensor 61 can be a thermocouple sensor, which can measure a temperature of several hundred degrees or even higher. For example, a K-type thermocouple can measure a temperature range of 0°C-1300°C, which is suitable for monitoring the temperature of general high-temperature air; an S-type thermocouple can measure a temperature of 0°C-1700°C, which performs well in air temperature monitoring scenarios with higher temperature requirements. By setting up the temperature sensor 61, the temperature of the air in the first exhaust pipe 18 can be monitored. When the temperature of the air in the first exhaust pipe 18 drops to close to normal temperature or after normal temperature, it means that the temperature in the processing chamber 2 is not enough to cause scalding to the operator and heat the water in the water tank 35. The first motor 24 can be stopped and the pressure relief plate 11 can be closed.

[0037] The connecting pipe 36 includes an upper tube body 39 and a lower tube body 40. The upper tube body 39 is installed on the upper side of the water tank 35 and passes into the water tank 35. The lower tube body 40 is placed in the water tank 35, and the upper end outer wall of the lower tube body 40 is horizontally rotatably connected to the lower end inner wall of the lower tube body 40. The upper end of the lower tube body 40 and the lower end of the upper tube body 39 are connected to each other. A second motor 41 is installed in the upper tube body 39, and the output shaft of the second motor 41 is arranged downward, and the output shaft of the second motor 41 extends downward to be connected to the inner wall of the lower tube body 40, so as to drive the lower tube body 40 to rotate. A plurality of air outlet holes 37 are arranged on the outer wall of the lower tube body 40 near the lower end. With such a configuration, when the pressure is released or the exhaust is exhausted, the lower tube body 40 is driven to rotate at a high speed by starting the second motor 41. When the lower tube body 40 rotates at a high speed, the water that originally entered the lower tube body 40 through the air outlet 37 due to being stationary will be thrown out, and then the high-temperature air that enters the lower tube body 40 will also be discharged through the air outlet 37 under the centrifugal action and enter the water tank 35 to exchange heat with the water, and this will drive the water in the water tank 35 to rotate, and the exhausted gas will move in the water tank 35 in the form of small bubbles, which can increase the heat exchange time and heat exchange efficiency. In order to prevent the second motor 41 from being affected by high temperature, an insulation block is set at the position of the output shaft of the second motor 41 near the second motor 41. The insulation block can be fixedly connected to the output shaft of the second motor 41 and slidably fit with the inner wall of the upper tube body 39, or fixedly connected to the inner wall of the upper tube body 39 and slidably fit with the output shaft of the second motor 41.

[0038] The water tank 35 partially passes through the waste heat chamber 34 and is placed outside the pressure relief part 8. The side of the water tank 35 placed outside the pressure relief part 8 is provided with a drain pipe 42 connected to the water tank 35 at a position close to the bottom of the water tank 35. A filter plate 43 is provided at one end of the drain pipe 42 placed in the water tank 35. A sewage pipe 44 is vertically provided at the position of the pipe mouth of the drainage pipe 42 at the bottom of the water tank 35. Two valves for controlling the opening and closing of the sewage pipe 44 are provided at intervals below the water tank 35. The inner bottom of the water tank 35 gradually tilts downward toward the position of the sewage pipe 44. The side wall of the water tank 35 is provided with a water inlet pipe 45. By providing the drain pipe 42, the heated hot water can be discharged and used as workshop heating hot water or industrial hot water. By providing a filter layer, the water in the water tank 35 can be filtered, and the dust or particles originally adsorbed in the water can be filtered out and will not enter the drain pipe 42. By setting the sewage pipe 44, the sludge formed by the dust deposited at the bottom or the dirty water rich in particles can be discharged after the water tank 35 is used many times. By setting the inner bottom of the water tank 35 to be inclined, the sludge or particles can be easily gathered toward the sewage pipe 44, and by setting two valves, when the water tank 35 is used normally, the upper valve can be opened and the lower valve can be closed, so that most of the sludge or particles will accumulate between the two valves, and then the upper valve can be closed and the lower valve can be opened to discharge most of the sludge and particles, and the discharge of excess water can be avoided as much as possible, saving water resources. By setting the water inlet pipe 45, water can be replenished through the water inlet pipe 45 after the hot water is discharged.

[0039] The top of the water tank 35 is provided with a cleaning hole 46 connected inside and outside at a position aligned with the filter plate 43, a cleaning block 47 is provided in the cleaning hole 46 to slide up and down, a plastic scraper 48 is provided at the lower side of the cleaning block 47, and a second electric telescopic rod 49 for driving the cleaning block 47 to move up and down is vertically installed above the water tank 35; the filter plate 43 is inclined from top to bottom toward the middle of the inner bottom of the water tank 35, the lower end of the plastic scraper 48 is aligned with the upper end of the filter plate 43 toward the middle of the water tank 35, and a transition inclined block 50 is provided on the inner wall of the water tank 35 on the upper side of the filter plate 43. Although the filter plate 43 is not arranged horizontally, after a period of use, some dust or particles will adhere to the filter plate 43, resulting in a decrease in the filtering efficiency of the filter plate 43. Therefore, after a period of use, the plastic scraper 48 is driven downward by the second electric telescopic rod 49 to contact the surface of the filter plate 43 to scrape off the dust or particles attached to the filter plate 43, and can smoothly fall into the sewage pipe 44. Since the filter plate 43 is tilted, the plastic scraper 48 will gradually bend when it contacts the filter plate 43 and moves downward, so that the plastic scraper 48 will always move downward in close contact with the surface of the filter plate 43. The plastic scraper 48 can also be replaced with hard rubber or silicone, which has a certain strength and can be partially bent. By setting a transition block, the plastic scraper 48 can smoothly move downward in close contact with the surface of the filter plate 43.

[0040] An adjusting chamber 51 is provided in the cleaning block 47, a connecting hole 52 aligned with the transition inclined block 50 is provided at the lower side of the cleaning block 47, a third electric telescopic rod 53 is provided at the top of the adjusting chamber 51 aligned with the connecting hole 52, the telescopic section of the third electric telescopic rod 53 is arranged downward, a plastic scraper 48 is vertically arranged in the adjusting chamber 51, the upper end of the plastic scraper 48 is connected to the lower end of the third electric telescopic rod 53, and the lower end of the plastic scraper 48 passes through the connecting hole 52 and is placed below the connecting hole 52; the bottom of the adjusting chamber 51 is at the bottom of the plastic scraper 48. A detection block 54 is installed on the side of the scraper blade 48 away from the inner wall of the water tank 35. A detection hole 55 is provided on the side of the detection block 54 facing the plastic scraper blade 48. A detection rod 56 is slidably provided on the detection hole 55. A second pressure sensor 57 is provided at the bottom of the detection hole 55. One end of the detection rod 56 placed in the detection hole 55 is connected to the second pressure sensor 57 through a second spring 58. One end of the detection rod 56 placed outside the detection hole 55 is installed with a roller 59. The roller 59 and the surface of the plastic scraper blade 48 are in contact and fit. After the plastic scraper blade 48 is repeatedly used for many times, due to the long-term repeated bending of the lower end of the plastic scraper blade 48, it is inevitable that a part of the lower end of the plastic scraper blade 48 will be broken. If a part of the plastic scraper blade 48 is broken, during the repeated lifting and lowering of the second electric telescopic rod 49, the lower end of the plastic scraper blade 48 cannot clean the entire filter plate 43, and thus the cleaning effect cannot be satisfied. In order to avoid this situation, the implementation effect of the scheme adopted in this embodiment is that when the plastic scraper 48 is not broken, since the plastic scraper 48 will deviate as a whole with the lower end of the third electric telescopic rod 53 as the fulcrum during the process of fitting and moving down with the filter plate 43, the lower end of the third electric telescopic rod 53 can be connected to the upper end of the plastic scraper 48 by a movable connecting piece or a movable shaft to avoid the hard connection from breaking during long-term use. During the deflection process, the detection rod 56 will be driven to move toward the detection hole 55 to compress the second spring 58. With the help of the detection rod 56 and the second spring 58, the lower end of the plastic scraper 48 can be always fitted with the surface of the filter plate 43, and the deformation area of ​​the plastic scraper 48 is concentrated in the lower part, even if the plastic scraper 48 breaks, it is the lower part that breaks. And in the process of the plastic scraper 48 moving down, the second spring 58 is driven to produce a pressure change on the second pressure sensor 57, and this pressure change gradually increases as the plastic scraper 48 moves down, and reaches the maximum value when the plastic scraper 48 moves to the bottom. However, after the lower end of the plastic scraper 48 is broken, since the lower end cannot move to the predetermined position in the original stroke, the maximum pressure value of the second pressure sensor 57 is lower than normal, and since the pressure value of the second pressure sensor 57 rises in a curve during the downward movement, the broken length of the plastic scraper 48 can be judged by the two maximum pressure value changes. Therefore, the plastic scraper 48 is pushed downward by the third electric telescopic rod 53 to compensate for the broken part, so that the plastic scraper 48 can work normally.By arranging the roller 59, the friction between the plastic scraper 48 and the detection rod 56 can be reduced. The cleaning process is generally performed when the water in the water tank 35 is discharged or substantially discharged, so as to prevent the water in the water tank 35 from entering the regulating chamber 51.

[0041] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A kiln with heat insulation and energy-saving functions, comprising a kiln body (1), a processing chamber (2) being arranged in the kiln body (1), an electric heating wire (3) being arranged on the chamber wall of the processing chamber (2), an entrance (4) being arranged on the front side of the kiln body (1) and communicating with the processing chamber (2), and a furnace door (5) for closing the entrance (4), a track (6) being installed at the chamber bottom of the processing chamber (2), a storage plate (7) being slidably installed on the track (6), characterized in that: A pressure relief portion (8) is installed on the upper side of the kiln body (1), a pressure relief chamber (9) is arranged in the pressure relief portion (8), a pressure relief hole (10) communicating with the processing chamber (2) is arranged on the lower chamber wall of the pressure relief chamber (9), a pressure relief plate (11) for closing the pressure relief hole (10) is arranged on the lower chamber wall of the pressure relief chamber (9), one side of the pressure relief plate (11) is rotatably connected to the lower chamber wall of the pressure relief chamber (9) via a hinge (12); a first electric telescopic rod (13) is installed in the pressure relief chamber (9), a fixed section of the first electric telescopic rod (13) is arranged upward, and is movably connected to the chamber wall of the pressure relief chamber (9) via a mounting rod (14), and a telescopic section of the first electric telescopic rod (13) is arranged downward, A pressure hole (15) is provided at the end portion along the axial direction of the first electric telescopic rod (13), a pressure rod (16) is slidably provided in the pressure hole (15), the upper end of the pressure rod (16) is connected to the bottom of the pressure hole (15) through a first spring (17) in the pressure hole (15), and the lower end of the pressure rod (16) is connected to the upper side of the pressure relief plate (11); a first exhaust pipe (18) is installed on the cavity wall of the pressure relief cavity (9), and an exhaust fan is installed in the first exhaust pipe (18); a waste heat cavity (34) is also provided in the pressure relief portion (8), a water tank (35) is provided in the waste heat cavity (34), a connecting pipe (36) is vertically provided on the top of the water tank (35), and the upper and lower ends of the connecting pipe (36) are connected to the bottom of the pressure hole (15). The connecting pipe (36) is provided with a closed end, the lower end of the connecting pipe (36) penetrates into the water tank (35) and is close to the bottom of the water tank (35), the side wall of the connecting pipe (36) is provided with a plurality of air outlet holes (37) which are connected to the inside and outside at a position close to the lower end, the end of the first exhaust pipe (18) which is away from the pressure relief chamber (9) is connected to the connecting pipe (36) above the water tank (35); a second exhaust pipe (38) which is connected to the inside of the water tank (35) is vertically provided on the upper side of the water tank (35); the connecting pipe (36) comprises an upper pipe body (39) and a lower pipe body (40), the upper pipe body (39) is installed on the upper side of the water tank (35) and penetrates into the water tank (35), and the lower pipe body (40) is placed on the water tank ( 35), and the upper end outer wall of the lower tube body (40) is horizontally rotatably connected to the lower end inner wall of the lower tube body (40), and the upper end of the lower tube body (40) and the lower end of the upper tube body (39) are connected to each other; a second motor (41) is installed in the upper tube body (39), and the output shaft of the second motor (41) is arranged downward, and the output shaft of the second motor (41) extends downward to be connected to the inner wall of the lower tube body (40) for driving the lower tube body (40) to rotate; a plurality of the air outlet holes (37) are arranged on the outer wall of the lower tube body (40) near the lower end; a ventilation pipe (60) penetrating the inside and the outside is installed on the first exhaust pipe (18), and an electric valve for controlling the opening and closing of the ventilation pipe (60) is installed on the ventilation pipe (60);A temperature sensor (61) is installed in the first exhaust pipe (18); one end of the mounting rod (14) is connected to the cavity wall of the pressure relief cavity (9); a first half ring (19) is provided on the lower side of the mounting rod (14); a first circular ring (20) is provided on the fixed end of the first electric telescopic rod (13); the first circular ring (20) and the first half ring (19) are movably connected; a second half ring (21) is provided on the upper side of the pressure relief plate (11) at a position away from the hinge (12); a second circular ring (22) is provided at the lower end of the pressure rod (16); the second circular ring (22) and the second half ring (21) are movably connected; a sealing member matching the pressure relief hole (10) is provided on the lower side of the pressure relief plate (11); The exhaust fan comprises a first motor (24), a mounting bracket (25), a rotating shaft (26) and a fan blade (27); the mounting bracket (25) is mounted in the first exhaust pipe (18); a steel ball bearing (28) is mounted in the middle of the mounting bracket (25); the rotating shaft (26) is mounted on the inner ring of the steel ball bearing (28); and the two ends of the rotating shaft (26) are respectively placed on both sides of the steel ball bearing (28); the fan blade (27) is mounted on one end of the rotating shaft (26); and the other end of the rotating shaft (26) is mounted with a first chain. The first motor (24) is mounted on the outside of the first exhaust pipe (18) outside the pressure relief chamber (9); a second sprocket (30) is mounted on the output shaft of the first motor (24); a through hole (32) penetrating the inside and outside of the first exhaust pipe (18); the first sprocket (29) and the second sprocket (30) are connected by a chain (31); the chain (31) passes through the through hole (32); a first pressure sensor (33) is mounted at the bottom of the pressure hole (15); the upper end of the first spring (17) is connected to the first pressure sensor (33); the lower end of the first spring (17) is connected to the upper end of the pressure rod (16); a portion of the water tank (35) passes through the pressure hole (15); The residual heat chamber (34) is arranged outside the pressure relief portion (8); a drainage pipe (42) connected to the water tank (35) is arranged at a position close to the bottom of the water tank (35) on the side of the water tank (35) arranged outside the pressure relief portion (8); a filter plate (43) is arranged at one end of the drainage pipe (42) arranged inside the water tank (35); a sewage pipe (44) is arranged vertically at the position of the pipe mouth of the drainage pipe (42) at the bottom of the water tank (35); two valves for controlling the on-off of the sewage pipe (44) are arranged at intervals below the water tank (35); the inner bottom of the water tank (35) gradually tilts downward toward the position of the sewage pipe (44); and a water inlet pipe (45) is arranged on the side wall of the water tank (35). ; 2. The kiln with heat insulation and energy saving function according to claim 1, characterized in that: A cleaning hole (46) communicating with the inside and outside is provided at a position aligned with the filter plate (43) on the top of the water tank (35); a cleaning block (47) is provided in the cleaning hole (46) to slide up and down; a plastic scraper (48) is provided on the lower side of the cleaning block (47); a second electric telescopic rod (49) for driving the cleaning block (47) to move up and down is vertically installed above the water tank (35); the filter plate (43) is inclined from top to bottom toward the middle of the inner bottom of the water tank (35); the lower end of the plastic scraper (48) is aligned with the upper end of the filter plate (43) toward the middle of the water tank (35); and a transition inclined block (50) is provided on the inner wall of the water tank (35) on the upper side of the filter plate (43).

3. The kiln with heat insulation and energy saving function according to claim 2, characterized in that: An adjusting cavity (51) is provided in the cleaning block (47); a communicating hole (52) aligned with the transition inclined block (50) is provided on the lower side of the cleaning block (47); a third electric telescopic rod (53) is provided on the cavity top of the adjusting cavity (51) aligned with the communicating hole (52); the telescopic section of the third electric telescopic rod (53) is arranged downward; the plastic scraper (48) is vertically arranged in the adjusting cavity (51); the upper end of the plastic scraper (48) is connected to the lower end of the third electric telescopic rod (53); the lower end of the plastic scraper (48) passes through the communicating hole (52) and is placed below the communicating hole (52); the cavity of the adjusting cavity (51) A detection block (54) is installed at the side of the plastic scraper (48) away from the inner wall of the water tank (35); a detection hole (55) is provided on the side of the detection block (54) facing the plastic scraper (48); a detection rod (56) is slidably provided in the detection hole (55); a second pressure sensor (57) is provided at the bottom of the detection hole (55); one end of the detection rod (56) disposed in the detection hole (55) is connected to the second pressure sensor (57) via a second spring (58); and a roller (59) is installed at one end of the detection rod (56) disposed outside the detection hole (55); the roller (59) is in contact with the surface of the plastic scraper (48).

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