Municipal sludge treatment device and treatment method thereof

Abstract

The invention relates to the related technical field of sludge treatment, in particular to a municipal sludge treatment device and a treatment method thereof.The municipal sludge treatment device comprises a main body, a feeding mechanism is arranged at one end of the top of the main body, and a sludge dispersing mechanism is arranged in a pretreatment cavity. After sludge enters the incineration chamber, the sludge firstly falls on the hollowed-out material carrying plate on the uppermost layer, along with continuous accumulation of the sludge on the hollowed-out material carrying plate on the uppermost layer, the multiple sets of hollowed-out material carrying plates can be driven by the driving mechanism to do transverse reciprocating motion, swinging of the hollowed-out material carrying plates is achieved, and in the swinging process, the sludge can fall into the hollowed-out material carrying plate on the uppermost layer. When sludge is burnt, part of the sludge begins to fall off from pores of the upper-layer grating slide glass, the lower-layer hollowed-out material carrying plates can receive the sludge falling off from the upper layer, the sludge falls off and is dispersed layer by layer among the multiple layers of hollowed-out material carrying plates along with the sludge, sludge accumulation can be effectively avoided, flames can penetrate through the sludge on the hollowed-out material carrying plates more easily in the burning process, and the burning efficiency is improved. The combustion reaction of organic matters in the sludge is promoted, so that the combustion is more complete.

Description

Technical Field

[0001] The present invention belongs to the technical field related to sludge treatment, and in particular relates to a municipal sludge treatment device and a treatment method thereof. Background Art

[0002] With the continuous expansion of industrial production and urban sewage treatment, the output of sludge is increasing. The sludge contains a large amount of pollutants such as organic matter, heavy metals and pathogens. If not handled properly, it will pose a serious threat to the environment and human health.

[0003] The Chinese invention patent with announcement number CN110713330A discloses a municipal sludge recycling and resource processing device, including a device shell, a sludge dehydration component and a pyrolysis component. A base is provided at the bottom of the device shell, and a sludge pump and a drain port are provided on the device shell. The sludge dehydration component includes an extrusion plate, a connecting rod and a power motor. A guide plate and a sliding rod are provided in the device shell. The extrusion plate is provided on the sliding rod. The power motor provides power for the extrusion plate. The pyrolysis component includes a pyrolysis cylinder, a sludge stirring component and a deodorizer. The pyrolysis cylinder is provided inside the device shell and is located at the lower end of the extrusion plate. The sludge stirring component includes a rotating motor and an auger. The auger is provided inside the pyrolysis cylinder. The power motor provides power for the auger. The deodorizer is connected to the pyrolysis cylinder for treating volatile gases.

[0004] To summarize, in the above-mentioned patent, after dehydrating the sludge, the sludge directly enters the incineration box for incineration, but the dehydrated sludge is generally in block or irregular shape. The sludge is very easy to accumulate into clumps during the incineration process, resulting in insufficient contact between the sludge and the air, insufficient oxygen supply during combustion, and thus low combustion efficiency. At the same time, due to the accumulation problem, it is difficult for the flame to evenly cover the clumped sludge, resulting in uneven heating of various parts of the sludge, which not only reduces the combustion efficiency, but also easily produces incomplete combustion products such as carbon monoxide and volatile organic compounds. In addition, in the unloading process, due to the stickiness of the sludge, it will adhere to the incineration box. The above-mentioned patent requires manual intervention during unloading, such as using tools to pry the sludge, which increases the labor intensity of the staff and also reduces the continuity of sludge treatment. Summary of the invention

[0005] The object of the present invention is to provide a municipal sludge treatment device and a treatment method thereof, so as to solve the problem mentioned in the above background technology that sludge is very easy to accumulate during the incineration process, resulting in insufficient contact between sludge and air, and thus low combustion efficiency.

[0006] The present invention is implemented as follows: a municipal sludge treatment device comprises a main body, One end of the top of the main body is provided with a feeding mechanism, one side of the main body is provided with a feeding mechanism, one end inside the main body is fixed with a diversion plate, and the other end inside the main body is provided with a pretreatment chamber. A sludge dispersion mechanism is arranged inside the pretreatment chamber. A sludge inlet is arranged on one side of the pretreatment chamber, and a sludge outlet is arranged at the bottom of the pretreatment chamber. A combustion chamber is fixed below the pretreatment chamber, and a first gate and a second gate are respectively arranged at the upper and lower ends of the combustion chamber. A plurality of groups of chutes are arranged on the side of the combustion chamber, and a hollow loading plate is arranged through the inside of the chutes. A driving mechanism is arranged outside the combustion chamber; The driving mechanism is used to drive the hollow loading plate to perform horizontal reciprocating motion; An air supply device is arranged inside the main body, and the air supply device is connected to the combustion chamber through a delivery pipe. A flue gas recovery cylinder is also arranged on the top of the main body.

[0007] In the above technical solution, during use, the sludge dispersion mechanism in the pretreatment chamber can be used to strike and refine the sludge to prevent the sludge from caking and entering the combustion chamber. After the sludge enters the inside of the combustion chamber, the sludge will first fall on the topmost hollow loading plate. As the sludge continuously accumulates on the topmost hollow loading plate, the driving mechanism can drive multiple groups of hollow loading plates to perform horizontal reciprocating motion, realizing the swing of the hollow loading plates. During the swing process, part of the sludge begins to fall from the pores of the upper grid loading pieces. The lower hollow loading plates not only receive the sludge falling from the upper layer, but also disrupt the landing distribution of the sludge through swinging, preventing the sludge from locally accumulating on the lower hollow loading plates. As the sludge gradually falls and disperses between the multiple layers of hollow loading plates, its degree of dispersion continuously increases. This enables oxygen to more fully contact the combustible components in the sludge, and the flame during the lower-layer combustion can also penetrate the hollow loading plates, promoting the combustion reaction and making the combustion more complete. Moreover, after the sludge is incinerated, the horizontally reciprocating hollow loading plates can quickly shake off the sludge, effectively preventing the sludge from being difficult to unload due to caking after incineration, automatically and effectively realizing sludge unloading, reducing the necessity of manual operation, thereby reducing the labor intensity of the operators, and at the same time reducing the labor cost and the safety risks that may be brought by manual operation.

[0008] Preferably, the feeding mechanism includes a mixing tank. A feeding bin is fixed on the top of the mixing tank, and one end of the feeding bin is connected to the mixing tank through a first guiding pipe. A first motor is fixed on the top of the mixing tank, and the output end of the first motor is connected to a mixing rod. The mixing rod is installed inside the mixing tank, and a discharging gate is arranged at the bottom of the mixing tank.

[0009] In the above technical solution, the first motor can drive the mixing rod to rotate, thereby realizing the mixing of low-calorie sludge with coal or combustion aids.

[0010] Preferably, the feeding mechanism includes a feeding pipe, a feeding bin is fixed at the bottom of the feeding pipe, and a second motor is fixed at the top of the feeding pipe. The output end of the second motor is connected to a screw conveyor, and the screw conveyor is vertically installed in the feeding pipe.

[0011] In the above technical solution, by putting sludge or coal into the feeding bin, the sludge can then be conveyed upward by driving the screw conveyor to rotate through the second motor, so that the sludge is discharged into the feeding bin from the top of the feeding pipe.

[0012] Preferably, the sludge dispersion mechanism includes a striking screen, the striking screen is connected to the output end of a third motor, and the third motor is installed outside the main body.

[0013] In the above technical solution, after the sludge is stirred and mixed, it will fall onto the diversion plate, and the diversion plate will guide the sludge into the pretreatment chamber. Before the sludge enters the pretreatment chamber, the third motor can be turned on to drive the striking screen to rotate. In this way, after the sludge enters the pretreatment chamber, the striking screen will strike and disperse the falling sludge, realizing the refinement treatment of the sludge, avoiding the influence of sludge agglomeration on combustion due to stirring, and helping to improve the sludge combustion efficiency.

[0014] Preferably, the driving mechanism includes a fourth motor, a crankshaft is provided at the output end of the fourth motor, and one end of a hollow loading plate is connected to the crankshaft through a connecting rod.

[0015] In the above technical solution, by driving the crankshaft to rotate through the fourth motor, when the crankshaft rotates, both ends of the connecting rod will rotate at the crankshaft and one end of the hollow loading plate respectively, so that the hollow loading plate can be driven to perform a horizontal reciprocating motion.

[0016] Preferably, a conveying chamber is opened at the bottom of the main body, and a conveyor belt is arranged inside the conveying chamber.

[0017] In the above technical solution, after the sludge is incinerated, the gate two at the bottom of the incineration chamber can be opened to discharge the sludge onto the conveyor belt inside the conveying chamber for outward conveyance.

[0018] Preferably, a flue gas passage is opened inside the flue gas recovery cylinder. One end of the flue gas passage is connected to the incineration chamber through an input pipe, and a flue gas filter cylinder is arranged on the input pipe. The other end of the flue gas passage is connected to the pretreatment chamber through an output pipe.

[0019] In the above technical solution, the flue gas during the incineration process will enter the flue gas recovery cylinder through the input pipe. Before the flue gas enters the flue gas recovery cylinder, the particulate matter and harmful substances will be filtered out through the flue gas filter cylinder on the input pipe. After the flue gas enters the flue gas recovery cylinder, it will be conveyed to the pretreatment chamber through the output pipe, so as to preheat the sludge when striking the sludge, accelerate the evaporation of the moisture in the sludge, and the preheated sludge can be ignited more quickly.

[0020] Preferably, a water storage cavity is further formed inside the flue gas recovery cylinder, and a steam output pipe is arranged at the top of the water storage cavity. A plurality of groups of heating sheets are fixed to the side wall of the water storage cavity, and the heating sheets penetrate through the flue gas channel.

[0021] In the above technical solution, after the flue gas enters the flue gas recovery cylinder, it heats the heating sheets inside the flue gas channel, and the heating sheets transfer heat to the water storage cavity to heat the water. The generated steam is transported out through the steam output pipe and can be used for power generation in cooperation with a steam turbine, improving the utilization efficiency of high-temperature flue gas.

[0022] A treatment method for a municipal sludge treatment device includes the following steps: Step 1: First, the dehydrated sludge is sent into the feed bin at the top of the mixing tank through the feeding mechanism. Then the sludge enters the mixing tank. In the mixing tank, the low calorific value sludge can be stirred and mixed with coal or a combustion aid. After that, the discharge gate is opened to discharge the sludge, and the sludge enters the pretreatment chamber through the guide plate. Since the sludge may agglomerate during the stirring process, to improve the combustion efficiency of the sludge, in the pretreatment chamber, the sludge can be beaten and refined by the sludge dispersion mechanism. By beating the sludge, not only can the agglomeration of the sludge affecting the combustion efficiency be avoided, but also the sludge can be more dispersed and enter the incineration chamber, so that during the combustion process, the combustible components in the sludge can be more easily ignited and burned, promoting the combustion reaction and improving the combustion efficiency.

[0023] Step 2: After the sludge enters the incineration chamber, it first falls on the uppermost layer of the hollow loading plate. As the sludge continuously accumulates on the uppermost layer of the hollow loading plate, the driving mechanism can drive a plurality of groups of hollow loading plates to move horizontally back and forth, realizing the swing of the hollow loading plates. During the swing, some sludge begins to fall through the pores of the upper grid loading pieces. The plurality of groups of hollow loading plates are arranged in a staggered manner. The lower hollow loading plates not only receive the sludge falling from the upper layer but also disrupt the landing distribution of the sludge through the swing, preventing the sludge from locally accumulating on the lower hollow loading plates. As the sludge gradually falls and disperses between the multiple layers of hollow loading plates, its degree of dispersion continuously increases, which enables oxygen to more fully contact the combustible components in the sludge, promoting the combustion reaction and making the combustion more complete, thereby greatly improving the combustion efficiency.

[0024] Step 3: During the combustion process of the sludge, the flue gas will enter the interior of the flue gas recovery cylinder through the input pipe. Before the flue gas enters the flue gas recovery cylinder, the dust filter cylinder on the input pipe will filter and intercept the dust particles in the flue gas. After the high-temperature flue gas enters the flue gas recovery cylinder, it will heat the heating sheet inside the flue gas passage, and the heating sheet will transfer heat to the water storage chamber to heat the water. The generated steam will be transported outward through the steam output pipe and can be used for power generation in cooperation with the steam turbine. At the same time, the flue gas will also be transported to the pretreatment chamber through the input pipe so that when hitting the sludge to disperse it, the sludge can be preheated, accelerating the evaporation of the water in the sludge. The preheated sludge can be ignited faster and burned more fully, thus improving the combustion efficiency.

[0025] Compared with the prior art, the beneficial effects of the present invention are: 1. After the sludge enters the interior of the incineration chamber, the sludge will first fall on the uppermost layer of the hollow loading plate. As the sludge continuously accumulates on the uppermost layer of the hollow loading plate, the driving mechanism can drive multiple groups of hollow loading plates to move horizontally back and forth, realizing the swing of the hollow loading plate. During the swing process, some of the sludge begins to fall through the pores of the upper layer of grid loading sheets, and the lower layer of hollow loading plates will receive the sludge falling from the upper layer. As the sludge gradually falls and disperses between the multiple layers of hollow loading plates, it can effectively prevent sludge accumulation, and during combustion, the flame can also more easily penetrate the sludge on the hollow loading plate, promoting the combustion reaction of the organic matter inside the sludge and making the combustion more complete. After the sludge is incinerated, the horizontally reciprocating hollow loading plate can also quickly shake off the sludge, effectively preventing the sludge from being difficult to unload due to caking after incineration, and can automatically and effectively realize sludge unloading, reducing the necessity of manual operation; 2. Before the sludge enters the incineration chamber, it will first enter the pretreatment chamber. In the pretreatment chamber, the motor three drives the beating screen to rotate, and the beating screen will beat and disperse the falling sludge, realizing the refinement treatment of the sludge and preventing the sludge from agglomerating due to stirring and affecting combustion. During continuous operation, the flue gas inside the incineration chamber will also be transported to the pretreatment chamber through the input pipe so that when hitting the sludge to disperse it, the sludge can be preheated, accelerating the evaporation of the water in the sludge. The preheated sludge can be ignited faster and burned more fully, thus improving the combustion efficiency. Description of the Drawings

[0026] Figure 1 is the front view schematic diagram of the present invention; Figure 2 is the sectional view schematic diagram of the mixing tank and the feeding bin of the present invention; Figure 3 is the sectional view schematic diagram of the feeding pipe of the present invention; Figure 4 is the sectional view schematic diagram of the incineration chamber of the present invention; Figure 5Top view schematic diagram of the hollow material loading plate of the present invention; Figure 6 Cross-sectional schematic diagram of the flue gas recovery cylinder of the present invention.

[0027] In the figure: 1. Main body, 2. Feeding mechanism, 201. Stirring tank, 202. Feeding bin, 203. First inlet pipe, 204. First motor, 205. Stirring rod, 206. Discharge gate, 3. Material distribution mechanism, 301. Electric rotating shaft, 302. Material distribution plate, 303. Second inlet pipe, 4. Feeding mechanism, 401. Feeding pipe, 402. Feeding bin, 403. Second motor, 404. Auger, 5. Deflector, 6. Sludge dispersion mechanism, 601. Impact sieve, 602. Third motor, 7. Incineration chamber, 8. First gate, 9. Second gate, 10. Hollow material loading plate, 11. Driving mechanism, 1101. Fourth motor, 1102. Crankshaft, 1103. Connecting rod, 12. Gas supply device, 13. Delivery pipe, 14. Conveyor belt, 15. Flue gas recovery cylinder, 16. Input pipe, 17. Flue gas filter cylinder, 18. Output pipe, 19. Steam output pipe, 20. Heating sheet. Detailed implementation manners

[0028] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0029] Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention.

[0030] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] Please refer to Figure 1-6, an embodiment provided by the present invention: One end of the top of the main body 1 is provided with a feeding mechanism 2, the side of the main body 1 is provided with a feeding mechanism 4, one end inside the main body 1 is fixed with a diversion plate 5, and a pretreatment chamber is opened at the other end inside the main body 1. A sludge dispersion mechanism 6 is arranged inside the pretreatment chamber, a sludge inlet is opened on the side of the pretreatment chamber, and a sludge outlet is opened at the bottom of the pretreatment chamber. A combustion chamber 7 is fixed below the pretreatment chamber, and a gate one 8 and a gate two 9 are respectively arranged at the upper and lower ends of the combustion chamber 7. A plurality of groups of chutes are opened on the side of the combustion chamber 7, and a hollow loading plate 10 is penetrated through the inside of the chutes. A driving mechanism 11 is arranged outside the combustion chamber 7; The driving mechanism 11 is used to drive the hollow loading plate 10 to perform horizontal reciprocating motion; An air supply device 12 is arranged inside the main body 1, and the air supply device 12 is connected to the combustion chamber 7 through a conveying pipe 13. A flue gas recovery cylinder 15 is also arranged at the top of the main body 1.

[0033] Please refer to Figure 1-2 , in this embodiment: The feeding mechanism 2 includes a mixing tank 201. A feeding bin 202 is fixed at the top of the mixing tank 201, and one end of the feeding bin 202 is connected to the mixing tank 201 through a guiding pipe one 203. A motor one 204 is fixed at the top of the mixing tank 201, and the output end of the motor one 204 is connected to a mixing rod 205. The mixing rod 205 is installed inside the mixing tank 201, and a discharge gate 206 is arranged at the bottom of the mixing tank 201.

[0034] Furthermore, a material distribution mechanism 3 is arranged inside the feeding bin 202. The material distribution mechanism 3 includes an electric rotating shaft 301. A material distribution plate 302 is arranged on the outside of the electric rotating shaft 301. A guiding pipe two 303 is fixed at the bottom of one end of the feeding bin 202.

[0035] By driving the material distribution plate 302 to rotate through the electric rotating shaft 301, the sludge entering the guiding pipe one 203 or the guiding pipe two 303 can be adjusted. When the calorific value of the sludge is insufficient, the material distribution plate 302 can be rotated to the left so as to introduce the sludge into the mixing tank 201 through the guiding pipe one 203 to be stirred and mixed with coal or a combustion improver. When the calorific value of the sludge is sufficient for combustion, the material distribution plate 302 can be rotated to the right, so that the sludge is directly introduced onto the diversion plate 5 through the guiding pipe two 303 and enters the pretreatment chamber, thereby avoiding unnecessary fuel waste, reducing the fuel cost, and also improving the combustion efficiency.

[0036] Please refer to Figure 1-3 , in this embodiment: The feeding mechanism 4 includes a feeding pipe 401. A feeding bin 402 is fixed at the bottom of the feeding pipe 401. A motor two 403 is fixed at the top of the feeding pipe 401. The output end of the motor two 403 is connected to a auger 404, and the auger 404 is vertically installed in the feeding pipe 401.

[0037] Please refer to Figure 1 , in this embodiment: The sludge dispersion mechanism 6 includes a striking sieve 601, the striking sieve 601 is connected to the output end of the third motor 602, and the third motor 602 is installed outside the main body 1.

[0038] Please refer to Figure 1-4 , in this embodiment: The driving mechanism 11 includes a fourth motor 1101, a crankshaft 1102 is provided at the output end of the fourth motor 1101, and one end of the hollow loading plate 10 is connected to the crankshaft 1102 through a connecting rod 1103.

[0039] Please refer to Figure 1 , in this embodiment: A conveying cavity is opened at the bottom of the main body 1, and a conveyor belt 14 is arranged inside the conveying cavity.

[0040] Please refer to Figure 1-6 , in this embodiment: A flue gas passage is opened inside the flue gas recovery cylinder 15. One end of the flue gas passage is connected to the incineration chamber 7 through an input pipe 16, and a flue gas filter cylinder 17 is arranged on the input pipe 16. The other end of the flue gas passage is connected to the pretreatment chamber through an output pipe 18.

[0041] Please refer to Figure 6 , in this embodiment: A water storage cavity is also opened inside the flue gas recovery cylinder 15. A steam output pipe 19 is arranged at the top of the water storage cavity. A plurality of groups of heating sheets 20 are fixed on the side wall of the water storage cavity, and the heating sheets 20 penetrate through the flue gas passage.

[0042] Furthermore, a water inlet is arranged at the top of the water storage cavity, and a liquid level pipe is arranged inside the water storage cavity to facilitate observing the liquid level inside the water storage cavity.

[0043] A treatment method for a municipal sludge treatment device includes the following steps: Step 1: First, the dehydrated sludge is sent into the feed bin 202 at the top of the mixing tank 201 through the feeding mechanism 4. Then the sludge will enter the mixing tank 201. In the mixing tank 201, the low calorific value sludge can be mixed with the sludge by adding coal or combustion aids. After that, the discharge gate 206 is opened to discharge the sludge. The sludge will enter the pretreatment chamber through the guide plate 5. Since the sludge may agglomerate during the mixing process, to improve the sludge combustion efficiency, in the pretreatment chamber, the sludge can be beaten and refined by the sludge dispersion mechanism 6. By beating the sludge, not only can the sludge agglomeration be avoided from affecting the combustion efficiency, but also the sludge can be more dispersed and enter the incineration chamber 7. During the combustion process, the combustibles in the sludge can be more easily ignited and burned, promoting the combustion reaction and improving the combustion efficiency.

[0044] Step 2: After the sludge enters the incineration chamber 7, the sludge will first fall on the uppermost layer of the hollow loading plate 10. As the sludge continuously accumulates on the uppermost layer of the hollow loading plate 10, the driving mechanism 11 can drive multiple groups of hollow loading plates 10 to reciprocate horizontally, realizing the swinging of the hollow loading plates 10. During the swinging process, some of the sludge begins to fall through the pores of the upper-layer grid loading pieces. The multiple groups of hollow loading plates 10 are staggered. The lower-layer hollow loading plates 10 not only receive the sludge falling from the upper layer, but also disrupt the landing point distribution of the sludge through swinging, preventing local accumulation of the sludge on the lower-layer hollow loading plates 10. As the sludge gradually falls and disperses among the multiple layers of hollow loading plates 10, its degree of dispersion continuously increases, enabling oxygen to more fully contact the combustible components in the sludge, promoting the combustion reaction, making the combustion more complete, and thus greatly improving the combustion efficiency.

[0045] Step 3: During the combustion of the sludge, the flue gas will enter the interior of the flue gas recovery cylinder 15 through the input pipe 16. Before the flue gas enters the flue gas recovery cylinder 15, the dust filter cylinder 17 on the input pipe 16 will filter and intercept the dust particles in the flue gas. After the high-temperature flue gas enters the flue gas recovery cylinder 15, it will heat the heating sheet 20 inside the flue gas channel, and the heating sheet 20 will transfer heat to the water storage cavity to heat the water. The generated steam will be transported outwards through the steam output pipe 19 and can be used for power generation in cooperation with a steam turbine. At the same time, the flue gas will also be transported to the pretreatment cavity through the input pipe 16 to preheat the sludge when hitting and dispersing the sludge, accelerating the evaporation of the water in the sludge. The preheated sludge can be ignited faster and burned more fully, thereby improving the combustion efficiency.

[0046] Working principle and usage process of the present invention: During use, first introduce the sludge to be incinerated into the feeding bin 402. Then, turn on the second motor 403 to drive the auger 404 to rotate, so that the auger 404 conveys the sludge upward and the sludge enters the feeding bin 202. After the sludge enters the feeding bin 202, it will be introduced into the mixing tank 201 through the first inlet pipe 203. For low calorific value sludge, coal or a combustion improver can be added, and the first motor 204 is turned on to drive the stirring rod 205 to rotate to mix and stir the sludge and coal. At the same time, the third motor 602 is turned on to drive the impact sieve 601 to rotate. After the sludge stirring is completed, the discharge gate 206 is opened to discharge the sludge. The sludge will pass through the guide plate 5 and enter the pretreatment chamber. After the sludge enters the pretreatment chamber, the rotating impact sieve 601 will strike and disperse the sludge, and refine the sludge. Then, the sludge will be discharged into the incineration chamber 7 through the sludge outlet at the bottom of the pretreatment chamber. After the sludge enters the incineration chamber 7, the sludge will first fall on the uppermost layer of the hollow loading plate 10. As the sludge continuously accumulates on the uppermost layer of the hollow loading plate 10, the fourth motor 1101 can be turned on to drive the crankshaft 1102 to rotate. When the crankshaft 1102 rotates, both ends of the connecting rod 1103 will rotate at one end of the crankshaft 1102 and the hollow loading plate 10 respectively, so as to drive the hollow loading plate 10 to perform a horizontal reciprocating motion, realizing the swing of the hollow loading plate 10. During the swing process, part of the sludge begins to fall from the pores of the upper grid loading piece, and the lower hollow loading plate 10 will receive the sludge falling from the upper layer. As the sludge gradually falls and disperses between the multi-layer hollow loading plates 10, sludge accumulation can be effectively avoided. Then, the first gate 8 is closed, and the gas supply device 12 is turned on to supply gas to the incineration chamber 7 through the delivery pipe 13 for combustion. During the sludge incineration process, the hollow loading plate 10 is conducive to the penetration of air and flame, avoiding the situation of being suffocated and unable to burn. At the same time, because the sludge is sufficiently dispersed, it is conducive to the combustion reaction of the organic matter inside the sludge, making the combustion more complete, shortening the incineration time, and improving the incineration efficiency. The flue gas generated during the incineration process will enter the flue gas recovery cylinder 15 through the input pipe 16. Before the flue gas enters the flue gas recovery cylinder 15, the flue gas filter cylinder 17 on the input pipe 16 will filter and intercept the particulate matter and harmful substances in the flue gas. After the high-temperature flue gas enters the flue gas recovery cylinder 15, it will heat the heating sheet 20 inside the flue gas channel, and the heating sheet 20 will transfer heat to the water storage chamber to heat the water. The generated steam will be transported outward through the steam output pipe 19 and can be used for power generation in cooperation with a steam turbine. At the same time, the flue gas will also be transported to the pretreatment chamber through the input pipe 16, so that when the sludge is subsequently struck and dispersed, the sludge can be preheated, accelerating the evaporation of the water in the sludge. The preheated sludge can be ignited faster and burned more fully, thereby improving the combustion efficiency. When the sludge incineration is completed, the second gate 9 at the bottom of the incineration chamber 7 can be opened, and the fourth motor 1101 is turned on to drive the crankshaft 1102 to rotate.The crankshaft 1102 is engaged with the connecting rod 1103 to drive the hollow loading plate 10 to reciprocate horizontally. By swinging the hollow loading plate 10, the sludge on the hollow loading plate 10 can be quickly shaken off, improving the unloading efficiency. The shaken-off sludge will fall onto the conveyor belt 14 in the conveying chamber and be conveyed outwards to facilitate the transfer of the incinerated sludge.

[0047] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A municipal sludge treatment device, characterized in that: It includes a main body (1), At one end of the top of the main body (1), a feeding mechanism (2) is provided. At the side of the main body (1), a feeding mechanism (4) is provided. At one end inside the main body (1), a flow guiding plate (5) is fixed. And at the other end inside the main body (1), a pretreatment chamber is provided. Inside the pretreatment chamber, a sludge dispersion mechanism (6) is provided. At the side of the pretreatment chamber, a sludge inlet is provided, and at the bottom of the pretreatment chamber, a sludge outlet is provided. Below the pretreatment chamber, an incineration chamber (7) is fixed. And at the upper and lower ends of the incineration chamber (7), a gate one (8) and a gate two (9) are respectively provided. At the side of the incineration chamber (7), a number of groups of chutes are provided, and a hollow loading plate (10) is penetrated inside the chutes. And at the outside of the incineration chamber (7), a driving mechanism (11) is provided; The driving mechanism (11) is used to drive the hollow loading plate (10) to perform horizontal reciprocating motion; Inside the main body (1), a gas supply device (12) is provided, and the gas supply device (12) is connected to the incineration chamber (7) through a delivery pipe (13). At the top of the main body (1), a flue gas recovery cylinder (15) is also provided.

2. The municipal sludge treatment device according to claim 1, characterized in that: The feeding mechanism (2) includes a mixing box (201). At the top of the mixing box (201), a feeding bin (202) is fixed. And at one end of the feeding bin (202), it is connected to the mixing box (201) through an introduction pipe one (203). At the top of the mixing box (201), a motor one (204) is fixed. And the output end of the motor one (204) is connected to a mixing rod (205). The mixing rod (205) is installed inside the mixing box (201), and at the bottom of the mixing box (201), a discharge gate (206) is provided.

3. The municipal sludge treatment device according to claim 1, characterized in that: The feeding mechanism (4) includes a feeding pipe (401). At the bottom of the feeding pipe (401), a feeding bin (402) is fixed. And at the top of the feeding pipe (401), a motor two (403) is fixed. The output end of the motor two (403) is connected to an auger (404), and the auger (404) is vertically installed in the feeding pipe (401).

4. A municipal sludge treatment device according to claim 1, characterized in that: The sludge dispersion mechanism (6) includes a striking sieve (601). The striking sieve (601) is connected to the output end of a motor three (602), and the motor three (602) is installed outside the main body (1).

5. A municipal sludge treatment device according to claim 1, characterized in that: The driving mechanism (11) includes a motor four (1101). At the output end of the motor four (1101), a crankshaft (1102) is provided. And on the crankshaft (1102), one end of the hollow loading plate (10) is connected through a connecting rod (1103).

6. A municipal sludge treatment device according to claim 1, characterized in that: At the bottom of the main body (1), a conveying chamber is provided, and inside the conveying chamber, a conveyor belt (14) is provided.

7. A municipal sludge treatment device according to claim 1, characterized in that: A flue gas recovery cylinder (15) is internally provided with a flue gas passage. One end of the flue gas passage is connected to an incineration chamber (7) through an input pipe (16), and a flue gas filter cylinder (17) is arranged on the input pipe (16). The other end of the flue gas passage is connected to a pretreatment chamber through an output pipe (18). A water storage chamber is also arranged inside the flue gas recovery cylinder (15), and a steam output pipe (19) is arranged at the top of the water storage chamber. A plurality of groups of heating sheets (20) are fixed on the side wall of the water storage chamber, and the heating sheets (20) penetrate through the flue gas passage.

8. A treatment method of the municipal sludge treatment device according to any one of claims 1-8, characterized in that, It includes the following steps: Step 1: First, the dehydrated sludge is fed into a feed bin (202) at the top of a mixing tank (201) through a feeding mechanism (4). Then the sludge enters the mixing tank (201). In the mixing tank (201), low calorific value sludge can be stirred and mixed with coal or a combustion aid. Then the discharge gate (206) is opened to discharge the sludge, and the sludge will enter the pretreatment chamber through a deflector (5). Since the sludge may agglomerate during the stirring process, to improve the combustion efficiency of the sludge, in the pretreatment chamber, the sludge can be beaten and refined by the sludge dispersion mechanism (6). By beating the sludge, not only can the agglomeration of the sludge be avoided from affecting the combustion efficiency, but also the sludge can be more dispersed and enter the incineration chamber (7), so that during the combustion process, the combustibles in the sludge can be more easily ignited and burned, promoting the combustion reaction and improving the combustion efficiency.

9. Step 2: After the sludge enters the incineration chamber (7), the sludge will first fall on the uppermost layer of the hollow loading plate (10). As the sludge continuously accumulates on the uppermost layer of the hollow loading plate (10), the driving mechanism (11) can drive a plurality of groups of hollow loading plates (10) to reciprocate horizontally, realizing the swing of the hollow loading plate (10). During the swing, some sludge begins to fall through the pores of the upper layer of grid loading sheets. The plurality of groups of hollow loading plates (10) are arranged in a staggered manner. The lower hollow loading plate (10) not only receives the sludge falling from the upper layer, but also disrupts the landing point distribution of the sludge through the swing, avoiding local accumulation of the sludge on the lower hollow loading plate (10). As the sludge gradually falls and disperses between the multi-layer hollow loading plates (10), its degree of dispersion continuously increases, which enables oxygen to more fully contact the combustible components in the sludge, promotes the combustion reaction, makes the combustion more complete, and thus greatly improves the combustion efficiency.

10. Step Three: During the combustion process of the sludge, the flue gas will enter the interior of the flue gas recovery cylinder (15) through the input pipe (16). Before the flue gas enters the flue gas recovery cylinder (15), the dust filter cylinder (17) on the input pipe (16) will filter and intercept the dust particles in the flue gas. After the high-temperature flue gas enters the flue gas recovery cylinder (15), it will heat the heating sheet (20) inside the flue gas channel, and the heating sheet (20) will transfer heat to the water storage cavity to heat the water. The generated steam will be transported outward through the steam output pipe (19) and can be used for power generation in cooperation with the steam turbine. At the same time, the flue gas will also be transported to the pretreatment cavity through the input pipe (16) so that when hitting the sludge to disperse it, the sludge can be preheated, accelerating the evaporation of the water in the sludge. The preheated sludge can be ignited faster and burned more fully, thereby improving the combustion efficiency.

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