Kiln with waste gas treatment function

Abstract

The invention relates to the technical field of kilns, in particular to a kiln with a waste gas treatment function, which comprises a kiln body and a preheating part, a flaming component is arranged in a kiln cavity of the kiln body, a preheating plate is obliquely arranged in a preheating cavity of the preheating part, a heating cavity is arranged in the preheating plate, and the lower end of the heating cavity is communicated with the top of the kiln cavity through a first air pipe. A second air pipe is installed outside the preheating part, one end of the second air pipe communicates with the upper end of the heating cavity, and an exhaust fan is arranged in the second air pipe; and the preheating part is provided with a spiral conveyor below the preheating cavity, the lower end of the preheating plate is communicated and aligned with a feeding port of the spiral conveyor, and a discharging port of the spiral conveyor is communicated with a feeding port of the furnace cavity. The high-temperature waste gas preheating device is not in direct contact with a mixed material while preheating the mixed material, so that the mixed material is prevented from being polluted by dust, impurities, water and the like in the high-temperature waste gas. The problem that in the prior art, waste gas generated in the production process of a gas furnace is not well utilized is solved.

Description

Technical Field

[0001] The invention relates to the technical field of kilns, and in particular to a kiln with a waste gas treatment function. Background Art

[0002] In the processing technology of sodium silicate, a commonly used method is the dry production process, and the specific steps include:

[0003] Raw material preparation: Mix (SiO2) and soda ash (Na2CO3) in a certain proportion. Usually, quartz sand is required to be of higher purity, with a particle size of about 0.180-0.250mm (60-80 mesh); soda ash can be light sodium carbonate or heavy sodium carbonate.

[0004] High temperature melting: The mixed raw materials are sent into a high temperature furnace such as a gas furnace or an electric furnace and heated to about 1400°C to make the raw materials react chemically to form molten sodium silicate. In this process, the furnace temperature needs to be strictly controlled to ensure that the reaction proceeds fully.

[0005] Molding and cooling: After the molten sodium silicate flows out from the discharge port of the furnace, it can be pressed into blocks by the rollers on the mold, or quickly cooled into granules by water quenching.

[0006] Subsequent processing: The obtained block or granular sodium silicate fragments are dissolved, filtered, concentrated and other operations to further remove impurities and obtain finished water glass that meets quality requirements.

[0007] Among them, gas furnaces can process a large amount of raw materials and have high production efficiency. They are more adaptable to continuous production processes, can stably supply heat, and ensure the continuity of the production process. This heating method can heat the raw materials evenly and is suitable for large-scale production. However, a large amount of waste gas will be generated during the combustion process of gas, and a complete waste gas treatment system needs to be equipped to reduce environmental pollution. Although these waste gases can be treated by the waste gas treatment system to reduce environmental pollution, the large amount of heat energy contained in these waste gases has not been well utilized. Summary of the invention

[0008] The purpose of the present invention is to provide a kiln with waste gas treatment function to solve the problem in the prior art that the waste gas generated by the gas furnace during the production process is not well utilized.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] A kiln with an exhaust gas treatment function comprises a kiln body, a furnace cavity is arranged in the kiln body, a flame spraying assembly is arranged in the furnace cavity, a material inlet and a discharge port are arranged on opposite sides of the furnace cavity respectively, a furnace sill is arranged at the bottom of the furnace cavity between the material inlet and the discharge port, and a preheating part is also included, a preheating cavity is arranged in the preheating part, a preheating plate is arranged obliquely in the preheating cavity, a heating cavity is arranged in the preheating plate, the lower end of the heating cavity is connected with the top of the furnace cavity through a first air duct, a second air duct is installed outside the preheating part, one end of the second air duct is connected with the upper end of the heating cavity, and an exhaust fan is arranged in the second air duct; a screw conveyor is installed below the preheating cavity in the preheating part, the lower end of the preheating plate is connected to the material inlet of the screw conveyor, and the material outlet of the screw conveyor is connected with the material inlet; a feeding pipe is arranged at the upper end of the preheating part and is aligned with the upper end of the upper side of the preheating plate.

[0011] A further technical solution is that an adjusting part is installed on the top of the kiln body, an adjusting cavity is arranged in the adjusting part, an adjusting hole connected with the furnace cavity is arranged at the bottom of the adjusting cavity, an adjusting rod is arranged in the adjusting hole for sliding up and down, the lower end of the adjusting rod is connected with a horizontally arranged furnace top plate in the furnace cavity, the flame-spraying assembly is installed on the lower side of the furnace top plate, the upper end of the adjusting rod is placed in the adjusting cavity, a traction machine is installed on the cavity top of the adjusting cavity, and the traction rope of the traction machine is connected to the upper end of the adjusting rod.

[0012] A further technical solution is that an air inlet connected to the regulating cavity is arranged on the side of the regulating part, an air outlet connected to the regulating cavity is arranged on the top of the regulating cavity, and a cooling fan is installed in the air outlet.

[0013] A further technical solution is that an active cavity is provided in the preheating part, a preheating box is movably installed in the active cavity, the preheating cavity is provided in the preheating box, the upper side of the preheating box is connected to the cavity top of the active cavity through a first spring, and the lower side is connected to the cavity bottom of the active cavity through a second spring; a vibration motor is installed on the outer wall of the preheating box; the preheating part is provided with a mounting hole penetrating both sides below the active cavity, the screw conveyor is installed in the mounting hole, and the cavity bottom of the preheating cavity is connected to the feed port of the screw conveyor through a feed pipe.

[0014] A further technical solution is that multiple preheating plates are arranged from top to bottom in the preheating chamber, the upper end of the preheating plate is connected to the chamber wall on one side of the preheating chamber, the lower end is inclined downward toward the chamber wall on the opposite side, and a gap is left between the lower end of the preheating plate and the chamber wall of the preheating chamber; the upper ends of two adjacent preheating plates are respectively connected to the chamber walls on the opposite sides of the preheating chamber; the heating chambers of two adjacent preheating plates are connected through a connecting pipe; the heating chamber of the preheating plate placed on the bottom layer is connected to the active chamber through a first air pipe, the heating chamber of the preheating plate placed on the top layer is connected to the second air duct through a second air pipe, and the first air duct is connected to the active chamber.

[0015] A further technical solution is that a plurality of diverter blocks are distributed on the upper side of the preheating plate.

[0016] A further technical solution is that a filter part for filtering the gas in the second air duct is installed between the exhaust fan and the preheating part.

[0017] A further technical solution is that a filter cavity is arranged in the filter part, and a first connecting hole and a second connecting hole connected to the filter cavity are respectively arranged on opposite sides of the filter part, a connecting sleeve is installed in the filter cavity, and both ends of the connecting sleeve are respectively aligned and connected with the first connecting hole and the second connecting hole; the second air duct includes a first tube body and a second tube body, the first tube body and the second tube body are respectively inserted into the connecting sleeve from the first connecting hole and the second connecting hole, an end of the first tube body away from the connecting sleeve is connected to the second air duct, and the exhaust fan is installed in the second tube body; the direction from the second tube body to the first tube body in the connecting sleeve is in accordance with A fixed rod, a sliding rod, a support frame and a first filter plate are provided. The outer wall of the fixed rod is connected to the inner wall of the connecting sleeve through the support rod. A detection hole is provided at one end of the fixed rod facing the sliding rod. A pressure sensor is provided at the bottom of the detection hole. One end of the sliding rod is slidably provided in the detection hole, and the end is connected to the pressure sensor through a third spring. The other end of the sliding rod is connected to the support frame through a connecting rod, and the edge of the support frame is slidably fitted with the inner wall of the connecting sleeve. The first filter plate is fitted to the side of the support frame away from the sliding rod, and the edge of the first filter plate is slidably fitted with the inner wall of the connecting sleeve.

[0018] A further technical solution is that an upper replacement port and a lower replacement port that pass through the inside and outside of the connecting sleeve are respectively provided on the upper and lower sides of the connecting sleeve, and an upper baffle and a lower baffle are respectively slidably provided on the connecting sleeve at the positions of the upper replacement port and the lower replacement port for closing the upper replacement port and the lower replacement port, and the upper baffle and the lower baffle are respectively driven by an upper electric telescopic rod and a lower electric telescopic rod; a drop port aligned with the lower replacement port is provided on the lower side of the preheating part, and a collecting bag is installed on the lower side of the preheating part at the position of the drop port; a screw motor is vertically installed downward above the upper replacement port in the filter chamber, and a driving block is provided on the screw thread matching sleeve of the screw motor, and a guide rail parallel to the screw is vertically installed on the cavity wall of the filter chamber, and the driving block is connected to the guide rail for sliding up and down, a horizontal bar is installed on the side of the driving block, and a vertical bar is vertically installed downward on the lower side of the horizontal bar, and a second filter plate is placed at the upper replacement port, and the lower end of the second filter plate is placed in the upper replacement port, and the lower end of the vertical bar is in contact with the upper end of the second filter plate.

[0019] A further technical solution is that a semi-ellipsoidal magnetic block is protruded from one side of the support frame facing the first filter plate, and magnetic grooves matching the magnetic block are provided on the side of the first filter plate and the second filter plate facing the support frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are: 1. The exhaust fan in the second air duct draws air toward the outside, which can generate negative pressure in the second air duct, so that the high-temperature exhaust gas in the furnace cavity is discharged through the first air duct, the heating cavity and the second air duct in sequence. When the high-temperature exhaust gas enters the heating cavity, the preheating plate will absorb heat and heat up. When the mixed material in the feeding pipe enters the preheating cavity, it falls onto the preheating plate. In the process of sliding from the upper end to the lower end on the preheating plate under the action of gravity, it will absorb the heat of the preheating plate, thereby heating the mixed material and achieving the preheating effect. The preheated mixed material is transported to the furnace cavity for processing by a screw conveyor; 2. The preheating method of the present invention can preheat the mixed material without direct contact with the mixed material, thereby avoiding dust, impurities, moisture, etc. in the high-temperature exhaust gas from polluting the mixed material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of a kiln with exhaust gas treatment function according to the present invention.

[0022] Figure 2 It is a side cross-sectional schematic diagram of a kiln with exhaust gas treatment function according to the present invention.

[0023] Figure 3 This is a schematic diagram of a preheating plate of a kiln with exhaust gas treatment function according to the present invention.

[0024] Figure 4 It is a schematic cross-sectional view of a preheating part of a kiln with exhaust gas treatment function according to the present invention.

[0025] Figure 5 This is a schematic diagram of a filter unit of a kiln with exhaust gas treatment function according to the present invention.

[0026] Figure 6 for Figure 5 A partial enlarged schematic diagram of the area marked A in the middle.

[0027] Figure 7 The figure is a schematic cross-sectional view of a furnace roof plate of a kiln having an exhaust gas treatment function according to the present invention.

[0028] Icons: 1- furnace body, 2- furnace chamber, 3- flame spray assembly, 4- feed port, 5- discharge port, 6- furnace sill, 7- preheating part, 8- preheating chamber, 9- preheating plate, 10- heating chamber, 11- first air duct, 12- second air duct, 13- screw conveyor, 14- feeding pipe, 15- adjustment part, 16- adjustment chamber, 17- adjustment hole, 18- adjustment rod, 19- furnace top plate, 20- traction machine, 21- air inlet, 22- exhaust port, 23- cooling fan, 24- movable chamber, 25- preheating box, 26- first spring, 27- second spring, 28- vibration motor, 29- installation hole, 30- feed pipe, 31- connecting pipe, 32- first air pipe, 33- second air pipe, 34- diverter block, 35- filter part, 36- filter chamber, 37- The first connecting hole, 38-the second connecting hole, 39-the connecting sleeve, 40-the first tube body, 41-the second tube body, 42-the fixing rod, 43-the sliding rod, 44-the supporting frame, 45-the first filter plate, 46-the supporting rod, 47-the detecting hole, 48-the pressure sensor, 49-the third spring, 50-the connecting rod, 51-the upper replacement port, 52-the lower replacement port, 53-the upper baffle plate, 54-the lower baffle plate, 55-the upper electric telescopic rod, 56-the lower electric telescopic rod, 57-the dropping port, 58-the screw motor, 59-the screw, 60-the driving block, 61-the guide rail, 62-the horizontal bar, 63-the vertical bar, 64-the second filter plate, 65-the magnetic block, 66-the magnetic groove, 67-the fitting block, 68-the guiding slope, 69-the base plate, 70-the refractory brick, 71-the anchor bolt. DETAILED DESCRIPTION

[0029] 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.

[0030] Figures 1 to 7 An embodiment of the present invention is shown.

[0031] Embodiment 1:

[0032] like Figure 1 , Figure 2 , Figure 7As shown, a kiln with exhaust gas treatment function includes a kiln body 1, a furnace chamber 2 is arranged in the kiln body 1, a flame spraying assembly 3 is arranged in the furnace chamber 2, an inlet 4 and an outlet 5 are arranged on opposite sides of the furnace chamber 2, a furnace sill 6 is arranged between the inlet 4 and the outlet 5 at the bottom of the furnace chamber 2, and a preheating part 7 is arranged in the preheating part 7. A preheating chamber 8 is arranged in the preheating chamber 8, a preheating plate 9 is arranged obliquely, a heating chamber 10 is arranged in the preheating plate 9, and the lower end of the heating chamber 10 passes through a first The air duct 11 is connected with the top of the furnace chamber 2, a second air duct 12 is installed outside the preheating part 7, one end of the second air duct 12 is connected with the upper end of the heating chamber 10, and an exhaust fan is arranged in the second air duct 12; the preheating part 7 is installed with a screw conveyor 13 below the preheating chamber 8, the lower end of the preheating plate 9 is connected with the feed port of the screw conveyor 13, and the discharge port of the screw conveyor 13 is connected with the feed port 4; the upper end of the preheating part 7 is provided with a feeding pipe 14 which is aligned with the upper end of the upper side of the preheating plate 9. By exhausting air toward the outside through the exhaust fan in the second air duct 12, negative pressure can be generated in the second air duct 12, so that the high-temperature exhaust gas in the furnace chamber 2 is discharged through the first air duct 11, the heating chamber 10 and the second air duct 12 in sequence. When the high-temperature exhaust gas enters the heating chamber 10, the preheating plate 9 absorbs heat and heats up. When the mixed material in the feeding pipe 14 enters the preheating chamber 8, it falls onto the preheating plate 9. In the process of sliding from the upper end to the lower end on the preheating plate 9 under the action of gravity, it absorbs the heat of the preheating plate 9, thereby heating the mixed material and achieving the preheating effect. The preheated mixed material is transported to the furnace chamber 2 for processing by the screw conveyor 13. The preheating method of the present invention can preheat the mixed material without direct contact with the mixed material, thereby avoiding dust, impurities, moisture, etc. in the high-temperature exhaust gas from polluting the mixed material.

[0033] An adjustment part 15 is installed on the top of the kiln body 1, and an adjustment cavity 16 is arranged in the adjustment part 15. An adjustment hole 17 connected to the furnace cavity 2 is arranged at the bottom of the adjustment cavity 16. An adjustment rod 18 is arranged in the adjustment hole 17 to slide up and down. The lower end of the adjustment rod 18 is connected to a horizontal furnace top plate 19 in the furnace cavity 2. The flame spraying assembly 3 is installed on the lower side of the furnace top plate 19. The upper end of the adjustment rod 18 is placed in the adjustment cavity 16. A traction machine 20 is installed on the cavity top of the adjustment cavity 16. The traction rope of the traction machine 20 is connected to the upper end of the adjustment rod 18. Compared with the traditional fixed furnace top plate 19, the heat radiation reflected by the furnace top plate 19 will be attenuated to a certain extent as the distance increases when it reaches the mixed material at the bottom of the furnace cavity 2. The longer the reflection distance, the more heat is absorbed by the high-temperature exhaust gas, resulting in a certain degree of heat energy waste. Therefore, the present invention uses an up and down adjustable furnace top plate 19. When heating mixed materials that require high-temperature reactions, the furnace top plate 19 can be adjusted closer to the bottom of the furnace chamber 2 to improve the heating efficiency. When heating mixed materials with relatively low reaction temperatures, the furnace top plate 19 can be appropriately adjusted to be farther away from the bottom of the furnace chamber 2 to coordinate with the flame spraying amount of the flame spraying assembly 3 to control the heating temperature. When the furnace top plate 19 is adjusted upward, the adjusting rod 18 is driven by the traction machine 20 to drive the furnace top plate 19 to move upward. When the furnace top plate 19 is adjusted downward, the weight of the furnace top plate 19 itself is used to fall to coordinate with the traction machine 20 to control the furnace top plate 19 to move downward. Figure 2 As shown, there are generally more than two adjustment rods 18 and adjustment holes 17, so that the furnace top plate 19 can maintain balance and levelness when moving up and down. Multiple adjustment rods 18 are connected by a horizontal rod, and the traction rope of the traction machine 20 is connected to the horizontal rod. There is a gap between the furnace top plate 19 and the feed port 4. After the mixed material enters the furnace cavity 2 from the feed port 4, it falls from this gap to the bottom of the furnace cavity 2. The furnace top plate 19 is made of high-temperature resistant metal or alloy material as a mounting substrate 69, and refractory bricks 70 are installed on the lower side of the substrate 69 as a heating surface and a reflecting surface. The installation method is as follows Figure 7 As shown, the refractory bricks 70 are fixed to the lower side of the substrate 69 by anchor bolts 71 of high temperature resistant alloy. And the fixing holes of the anchor bolts 71, the gaps of the refractory bricks 70, the gaps of the substrate 69, the edges of the substrate 69 and other parts are filled and sealed with refractory mud.

[0034] Embodiment 2:

[0035] On the basis of Example 1, Figure 3 , Figure 4The side of the regulating part 15 is provided with an air inlet 21 connected to the regulating chamber 16, and the top of the regulating chamber 16 is provided with an air outlet 22 connected to the regulating chamber 16, and a heat dissipation fan 23 is installed in the air outlet 22. By providing the air inlet 21, the air outlet 22 and the heat dissipation fan 23, the temperature in the regulating chamber 16 can be reduced by air flow to prevent the traction machine 20 from being in a high temperature environment. At the same time, by adjusting the temperature of the portion of the regulating rod 18 placed in the regulating chamber 16, the temperature of the portion of the regulating rod 18 placed in the furnace chamber 2 and the temperature of the base plate 69 connected to the regulating rod 18 can be reduced, thereby reducing the temperature of these metal materials.

[0036] The preheating part 7 is provided with an active cavity 24, in which a preheating box 25 is movably installed, and the preheating cavity 8 is provided in the preheating box 25. The upper side of the preheating box 25 is connected to the cavity top of the active cavity 24 through a first spring 26, and the lower side is connected to the cavity bottom of the active cavity 24 through a second spring 27; a vibration motor 28 is installed on the outer wall of the preheating box 25; the preheating part 7 is provided with a mounting hole 29 that passes through both sides below the active cavity 24, and the screw conveyor 13 is installed in the mounting hole 29, and the cavity bottom of the preheating cavity 8 is connected to the feed port of the screw conveyor 13 through a feed pipe 30. By providing the vibration motor 28, the preheating box 25 can be driven to vibrate. After the mixed material enters the preheating cavity 8 and falls onto the preheating plate 9, in addition to sliding down naturally due to its own weight, in order to prevent the mixed material from accumulating on the preheating plate 9, the mixed material is driven to slide down smoothly from top to bottom on the preheating plate 9 by vibration. By providing the first spring 26 and the second spring 27 , the preheating box 25 can have enough movable space in the movable chamber 24 when vibrating, and can generate sufficient vibration.

[0037] There are multiple preheating plates 9 arranged from top to bottom in the preheating chamber 8. The upper end of the preheating plate 9 is connected to the cavity wall on one side of the preheating chamber 8, and the lower end is inclined downward toward the cavity wall on the opposite side, and there is a gap between the lower end of the preheating plate 9 and the cavity wall of the preheating chamber 8; the upper ends of the two adjacent preheating plates 9 are respectively connected to the cavity walls on the opposite sides of the preheating chamber 8; the heating chambers 10 of the two adjacent preheating plates 9 are connected through a connecting pipe 31; the heating chamber 10 of the preheating plate 9 at the bottom is connected to the active chamber 24 through the first air pipe 32, and the heating chamber 10 of the preheating plate 9 at the top is connected to the second air pipe 12 through the second air pipe 33, and the first air pipe 11 is connected to the active chamber 24. With this arrangement, after the mixed material enters the preheating chamber 8 from the feeding pipe 14, it slides down from the preheating plate 9 at the top in sequence, passes through multiple preheating plates 9, and enters the screw conveyor 13 from the feeding pipe 30 at the bottom of the preheating chamber 8. This can increase the contact time between the mixed material and the preheating plate 9, so that the mixed material can be fully heated during the sliding process, and because the high-temperature exhaust gas moves from the lowest preheating plate 9 to the highest preheating plate 9, the lowest preheating plate 9 can maintain the highest temperature, and the upper preheating plate 9 gradually decreases in temperature after absorbing heat in sequence, so that the mixed material gradually heats up during the movement from top to bottom, and because the lower layer is at the highest temperature, the mixed material can still absorb heat and heat up when it slides to the lowest layer because the temperature difference between the preheating plate 9 and the mixed material is still large enough. After the exhaust fan in the second air duct 12 is started, the high-temperature exhaust gas in the furnace chamber 2 enters the active chamber 24 through the first air duct 11, and then enters the heating chamber 10 through the first air duct 32. After the preheating plate 9 is heated by the heating chamber 10, it enters the second air duct 12 through the second air duct 33. A water storage box is also provided at the bottom of the active cavity 24. Since there is a large amount of water vapor in the high-temperature exhaust gas, after heat exchange with the preheating plate 9, part of the water vapor will condense to form condensed water. After the condensed water drips into the active cavity 24, it will be stored in the water storage box.

[0038] A plurality of diverter blocks 34 are provided on the upper side of the preheating plate 9. By providing the diverter blocks 34, when the mixed material slides on the preheating plate 9, on the one hand, the mixed material can be fully diverted, so that the mixed material can fully contact the preheating plate 9, and at the same time, it can also play a role of deceleration, so as to prevent the mixed material from getting faster and faster during the sliding process. By decelerating the mixed material, it is beneficial to increase the contact time between the mixed material and the preheating plate 9.

[0039] The second air duct 12 is provided with a filter section 35 for filtering the high-temperature exhaust gas in the second air duct 12 between the exhaust fan and the preheating section 7. By setting the filter section 35, the high-temperature exhaust gas after heat exchange can be filtered. In addition to water vapor, the high-temperature exhaust gas also contains silicon dioxide dust. The silicon element in sodium silicate mainly exists in the form of silicon dioxide. During the high-temperature sintering process, some silicon dioxide may be dispersed in the form of dust. Silicon dioxide is mainly solid at room temperature, and exists more in the form of dust in the exhaust gas. If the exhaust gas containing silicon dioxide dust is directly discharged without being filtered, it will have a certain degree of impact on the surrounding air, soil and water.

[0040] Embodiment 3:

[0041] Based on the above embodiments, Figure 5 , Figure 6As shown, a filter cavity 36 is provided in the filter portion 35, and a first connecting hole 37 and a second connecting hole 38 communicating with the filter cavity 36 are respectively provided on opposite sides of the filter portion 35, and a connecting sleeve 39 is installed in the filter cavity 36, and both ends of the connecting sleeve 39 are respectively aligned and connected with the first connecting hole 37 and the second connecting hole 38; the second air duct 12 includes a first tube body 40 and a second tube body 41, and the first tube body 40 and the second tube body 41 are respectively inserted into the connecting sleeve 39 from the first connecting hole 37 and the second connecting hole 38, and the end of the first tube body 40 away from the connecting sleeve 39 is connected with the second air pipe 33, and the exhaust fan is installed in the second tube body 41; the connecting sleeve 39 is sequentially provided with A fixed rod 42, a sliding rod 43, a support frame 44 and a first filter plate 45, the outer wall of the fixed rod 42 is connected to the inner wall of the connecting sleeve 39 through the support rod 46, a detection hole 47 is provided at one end of the fixed rod 42 facing the sliding rod 43, a pressure sensor 48 is provided at the bottom of the detection hole 47, one end of the sliding rod 43 is slidably set in the detection hole 47, and the end is connected to the pressure sensor 48 through a third spring 49, the other end of the sliding rod 43 is connected to the support frame 44 through a connecting rod 50, the edge of the support frame 44 is slidably fitted with the inner wall of the connecting sleeve 39, the first filter plate 45 is fitted to the side of the support frame 44 away from the sliding rod 43, and the edge of the first filter plate 45 is slidably fitted with the inner wall of the connecting sleeve 39. In the process of high-temperature exhaust gas moving from the first tube body 40 to the second tube body 41, dust, impurities, particles, etc. in the high-temperature exhaust gas can be filtered through the first filter plate 45. These dust, impurity particles will be adsorbed on the first filter plate 45. As the dust accumulates on the first filter plate 45, the filtering performance of the first filter plate 45 and the high-temperature exhaust gas flux will decrease. In order to facilitate timely replacement of the first filter plate 45 to maintain its efficient filtering effect, the above-mentioned technical solution is used to monitor the filtering performance of the first filter plate 45. Specifically, when dust is adsorbed on the first filter plate 45, the flux of the first filter plate 45 will decrease, thereby increasing the resistance of the high-temperature exhaust gas when passing through the first filter plate 45, which will cause the high-temperature exhaust gas to push the first filter plate 45 to move toward the fixed rod 42, and during the movement, the sliding rod 43 will be pushed to compress the third spring 49. During the compression of the third spring 49, the pressure value generated by the pressure sensor 48 will change. The operator can judge the use of the first filter plate 45 according to the change in the pressure value. When the pressure value reaches a certain critical point, it means that the first filter plate 45 needs to be replaced to ensure the filtering performance of the filter unit 35. The support frame 44 and the connecting rod 50 can support the first filter plate 45 so that the first filter plate 45 will not tilt during the movement.

[0042] An upper replacement port 51 and a lower replacement port 52 which pass through the inside and outside of the connecting sleeve 39 are respectively provided on the upper and lower sides of the connecting sleeve 39. An upper baffle 53 and a lower baffle 54 for closing the upper replacement port 51 and the lower replacement port 52 are respectively slidably provided on the connecting sleeve 39. The upper baffle 53 and the lower baffle 54 are respectively driven by an upper electric telescopic rod 55 and a lower electric telescopic rod 56; a drop port 57 aligned with the lower replacement port 52 is provided on the lower side of the preheating part 7, and a collecting bag is installed on the lower side of the preheating part 7 at the position of the drop port 57; a filter chamber A screw motor 58 is vertically installed downward above the upper replacement port 51 of the filter chamber 36. The screw 59 of the screw motor 58 is threadedly matched with a driving block 60. A guide rail 61 parallel to the screw 59 is vertically installed on the wall of the filter chamber 36. The driving block 60 is connected to the guide rail 61 for sliding up and down. A horizontal bar 62 is installed on the side of the driving block 60. A vertical bar 63 is vertically installed downward on the lower side of the horizontal bar 62. A second filter plate 64 is placed at the upper replacement port 51. The lower end of the second filter plate 64 is placed in the upper replacement port 51. The lower end of the vertical bar 63 is in contact with the upper end of the second filter plate 64. The inner wall of the connecting sleeve 39 is provided with a fitting block 67 on the side of the upper replacement port 51 and the lower replacement port 52 facing the first tube body 40, which is used to support the first filter plate 45. Through the above technical solution, the first filter plate 45 can be automatically replaced when the first filter plate 45 reaches the limit of use, wherein the first filter plate 45 and the second filter plate 64 have the same structure and material. In order to distinguish them, the first filter plate 45 and the second filter plate 64 are used to distinguish them. When the first filter plate 45 is in normal use, the lower electric telescopic rod 56 pushes the lower baffle plate 54 to block the lower replacement port 52 to avoid air leakage. A sealing layer is provided between the lower baffle plate 54 and the lower side of the connecting sleeve 39. The lower end of the second filter plate 64 is placed in the upper replacement port 51, and the upper replacement port 51 is blocked by the second filter plate 64. Since the exhaust fan is used to exhaust air in the second tube body 41, a negative pressure is formed, which can prevent the high-temperature exhaust gas from overflowing from the gap between the upper replacement port 51 and the second filter plate 64. The upper baffle plate 53 is pushed by the upper electric telescopic rod 55 to press the second filter plate 64 against the upper replacement port 51. During the use of the first filter plate 45 , as the filtering performance of the first filter plate 45 decreases, the first filter plate 45 will gradually move toward the fixing rod 42 and move away from the position between the upper replacement port 51 and the lower replacement port 52 .When replacement is needed, the exhaust fan is turned off and the third spring 49 will push the first filter plate 45 to return to between the upper replacement port 51 and the lower replacement port 52 and fit into the fitting block 67. At this time, the lower baffle plate 54 is driven to move away from the lower replacement port 52 by the lower electric telescopic rod 56, and the upper electric telescopic rod 55 drives the upper baffle plate 53 to move away from the upper replacement port 51. After moving away, the screw motor 58 is started, and the drive block 60 is driven to move downward through the screw rod 59 and the guide rail 61. In the process of the drive block 60 moving downward, the vertical bar 63 is driven downward by the horizontal bar 62, thereby pressing down the second filter plate 64. The downward pressure of the second filter plate 64 will push the first filter plate 45 to move downward, so that the second filter plate 64 gradually replaces the position of the first filter plate 45, and the first filter plate 45 falls from the lower replacement port 52 and finally falls into the collection bag through the drop port 57. Then, the lower electric telescopic rod 56 pushes the lower baffle 54 to block the lower replacement port 52, and the upper electric telescopic rod 55 pushes the upper baffle 53 to block the upper replacement port 51. Then, the screw motor 58 drives the driving block 60 to move upward and reset, and restarts the exhaust fan. This solution can complete the replacement of the first filter plate 45 during the short-term stop of the exhaust fan, which improves the replacement efficiency, and the short-term stop of the exhaust fan will not affect the entire exhaust. After the second filter plate 64 is replaced, the operator can add a new filter plate in time to cope with the next automatic replacement of the filter plate.

[0043] A magnetic block 65 in the shape of a semi-ellipsoid is provided on one side of the support frame 44 facing the first filter plate 45, and a magnetic groove 66 matching the magnetic block 65 is provided on one side of the first filter plate 45 and the second filter plate 64 facing the support frame 44. By providing the magnetic block 65 and the magnetic groove 66, the first filter plate 45 and the support frame 44 can be quickly positioned and installed, and after the second filter plate 64 replaces the first filter plate 45, the second filter plate 64 can be quickly positioned with the support frame 44. The connecting sleeve 39 is provided with a guiding slope 68 on the inner side of the upper replacement port 51 and the lower replacement port 52 facing the second tube body 41, so that some slight misalignment of the second filter plate 64 of the replacement port can be avoided, resulting in the second filter plate 64 not being able to move smoothly along the inner wall of the connecting sleeve 39. Through the guiding slope 68, the edge of the second filter plate 64 can smoothly enter the connecting sleeve 39.

[0044] 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 an exhaust gas treatment function, comprising a kiln body (1), a furnace cavity (2) being arranged in the kiln body (1), a flame spraying assembly (3) being arranged in the furnace cavity (2), a material inlet (4) and an exhaust port (5) being arranged on opposite sides of the furnace cavity (2), a furnace sill (6) being arranged at the bottom of the furnace cavity (2) between the material inlet (4) and the exhaust port (5), wherein: The furnace (2) further comprises a preheating section (7), wherein a preheating chamber (8) is arranged in the preheating section (7), a preheating plate (9) is arranged in an inclined manner in the preheating chamber (8), a heating chamber (10) is arranged in the preheating plate (9), the lower end of the heating chamber (10) is connected to the top of the furnace chamber (2) through a first air duct (11), a second air duct (12) is installed outside the preheating section (7), one end of the second air duct (12) is connected to the upper end of the heating chamber (10), and an exhaust fan is arranged in the second air duct (12); a screw conveyor (13) is installed below the preheating chamber (8) in the preheating section (7), the lower end of the preheating plate (9) is connected to the feed port of the screw conveyor (13), and the discharge port of the screw conveyor (13) is connected to the feed port (4); and a feeding pipe (14) is arranged at the upper end of the preheating section (7) and is aligned with the upper end of the upper side of the preheating plate (9).

2. The kiln with exhaust gas treatment function according to claim 1, characterized in that: An adjusting portion (15) is installed on the top of the kiln body (1), an adjusting cavity (16) is arranged in the adjusting portion (15), an adjusting hole (17) communicating with the furnace cavity (2) is arranged at the bottom of the adjusting cavity (16), an adjusting rod (18) is slidably arranged in the adjusting hole (17), the lower end of the adjusting rod (18) is connected to a horizontally arranged furnace top plate (19) in the furnace cavity (2), the flame spraying assembly (3) is installed on the lower side of the furnace top plate (19), the upper end of the adjusting rod (18) is placed in the adjusting cavity (16), a traction machine (20) is installed on the cavity top of the adjusting cavity (16), and a traction rope of the traction machine (20) is connected to the upper end of the adjusting rod (18).

3. The kiln with exhaust gas treatment function according to claim 2, characterized in that: An air inlet (21) communicating with the regulating chamber (16) is arranged on the side of the regulating portion (15), an air outlet (22) communicating with the regulating chamber (16) is arranged on the top of the regulating chamber (16), and a cooling fan (23) is installed in the air outlet (22).

4. The kiln with exhaust gas treatment function according to claim 1, characterized in that: The preheating section (7) is provided with an active cavity (24), a preheating box (25) is movably installed in the active cavity (24), the preheating cavity (8) is arranged in the preheating box (25), the upper side of the preheating box (25) is connected to the cavity top of the active cavity (24) via a first spring (26), and the lower side is connected to the cavity bottom of the active cavity (24) via a second spring (27); a vibration motor (28) is installed on the outer wall of the preheating box (25); the preheating section (7) is provided with a mounting hole (29) penetrating both sides below the active cavity (24), the screw conveyor (13) is installed in the mounting hole (29), and the cavity bottom of the preheating cavity (8) is connected to the feed port of the screw conveyor (13) via a feed pipe (30).

5. The kiln with exhaust gas treatment function according to claim 4, characterized in that: A plurality of preheating plates (9) are arranged from top to bottom in the preheating chamber (8); the upper end of the preheating plate (9) is connected to the chamber wall on one side of the preheating chamber (8), and the lower end is inclined downward toward the chamber wall on the opposite side, and a gap is left between the lower end of the preheating plate (9) and the chamber wall of the preheating chamber (8); the upper ends of two upper and lower adjacent preheating plates (9) are respectively connected to the chamber walls on the opposite sides of the preheating chamber (8); the heating chambers (10) of the two upper and lower adjacent preheating plates (9) are connected via a connecting pipe (31); the heating chamber (10) of the preheating plate (9) at the bottom layer is connected to the active chamber (24) via a first air pipe (32), the heating chamber (10) of the preheating plate (9) at the top layer is connected to the second air pipe (12) via a second air pipe (33), and the first air pipe (11) is connected to the active chamber (24).

6. The kiln with exhaust gas treatment function according to claim 5, characterized in that: A plurality of diverter blocks (34) are distributed on the upper side of the preheating plate (9).

7. The kiln with exhaust gas treatment function according to claim 5, characterized in that: The second air duct (12) is provided with a filter unit (35) between the exhaust fan and the preheating unit (7) for filtering high-temperature exhaust gas in the second air duct (12).

8. The kiln with exhaust gas treatment function according to claim 7, characterized in that: A filter cavity (36) is provided in the filter portion (35), and a first connecting hole (37) and a second connecting hole (38) which are in communication with the filter cavity (36) are provided on opposite sides of the filter portion (35). A connecting sleeve (39) is installed in the filter cavity (36), and two ends of the connecting sleeve (39) are aligned and connected with the first connecting hole (37) and the second connecting hole (38) respectively. The second air duct (12) comprises a first tube body (40) and a second tube body (41), and the first tube body (40) and the second tube body (41) respectively pass through the connecting sleeve (39) from the first connecting hole (37) and the second connecting hole (38), and an end of the first tube body (40) which is away from the connecting sleeve (39) is in communication with the second air duct (33), and the exhaust fan is installed in the second tube body (41); fixing rods ( 42), a sliding rod (43), a support frame (44) and a first filter plate (45), the outer wall of the fixed rod (42) is connected to the inner wall of the connecting sleeve (39) through a support rod (46), one end of the fixed rod (42) facing the sliding rod (43) is provided with a detection hole (47), the bottom of the detection hole (47) is provided with a pressure sensor (48), one end of the sliding rod (43) is slidably arranged in the detection hole (47), and the end is connected to the pressure sensor (48) by a third spring (49), the other end of the sliding rod (43) is connected to the support frame (44) through a connecting rod (50), the edge of the support frame (44) is slidably fitted with the inner wall of the connecting sleeve (39), the first filter plate (45) is fitted to a side of the support frame (44) away from the sliding rod (43), and the edge of the first filter plate (45) is slidably fitted with the inner wall of the connecting sleeve (39).

9. The kiln with exhaust gas treatment function according to claim 8, characterized in that: An upper replacement port (51) and a lower replacement port (52) penetrating the inside and outside of the connection sleeve (39) are respectively provided on the upper and lower sides of the connection sleeve (39); an upper baffle (53) and a lower baffle (54) for closing the upper replacement port (51) and the lower replacement port (52) are respectively slidably provided on the connection sleeve (39) at the positions of the upper replacement port (51) and the lower replacement port (52); the upper baffle (53) and the lower baffle (54) are respectively driven by an upper electric telescopic rod (55) and a lower electric telescopic rod (56); a drop-out port (57) aligned with the lower replacement port (52) is provided on the lower side of the preheating section (7); a collecting bag is installed on the lower side of the preheating section (7) at the position of the drop-out port (57); the filter chamber (36) A screw motor (58) is vertically mounted downward above the upper replacement port (51); a screw rod (59) of the screw motor (58) is threadedly matched with a drive block (60); a guide rail (61) parallel to the screw rod (59) is vertically mounted on the cavity wall of the filter cavity (36); the drive block (60) is connected to the guide rail (61) in an upward and downward sliding manner; a horizontal bar (62) is mounted on the side of the drive block (60); a vertical bar (63) is vertically mounted downward on the lower side of the horizontal bar (62); a second filter plate (64) is placed at the upper replacement port (51); the lower end of the second filter plate (64) is placed in the upper replacement port (51); and the lower end of the vertical bar (63) is in contact with the upper end of the second filter plate (64).

10. The kiln with exhaust gas treatment function according to claim 9, characterized in that: A semi-ellipsoidal magnetic attraction block (65) is provided on one side of the support frame (44) facing the first filter plate (45), and a magnetic attraction groove (66) matching the magnetic attraction block (65) is provided on one side of the first filter plate (45) and the second filter plate (64) facing the support frame (44).

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