Building sludge treatment system and treatment process

Abstract

The invention relates to the technical field of sludge treatment, in particular to a building sludge treatment system and process. Comprising a pyrolysis tank and a bracket fixedly connected with the lower half part of the pyrolysis tank, a separation disc is fixedly connected to the upper position of the inner wall of the pyrolysis tank; the internal space of the pyrolysis tank is divided into an upper cavity and a lower cavity by the separation disc; the upper surface of the separation disc is fixedly connected with a pyrolysis sleeve; a gap is reserved between the upper end of the pyrolysis sleeve and the top of the inner wall of the pyrolysis tank; a deslagging gap is formed between the outer wall of the pyrolysis sleeve and the inner wall of the pyrolysis tank; the pyrolysis sleeve is concentric with the cross section of the pyrolysis tank; the center of the upper cavity is rotationally connected with a center rod; sludge accumulated on the lower portion of the inner side of the pyrolysis sleeve can be conveyed upwards in the rotating process, the sludge is spread out, the heating area of the sludge and the heating element in the spiral plate is increased, the sludge pyrolysis efficiency is improved, and in addition, after the sludge is spread out by the main spiral plate, the problems of low pyrolysis efficiency and uneven pyrolysis caused by sludge accumulation are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and specifically relates to a building sludge treatment system and a treatment process. Background Art

[0002] Like ordinary sludge, building sludge also needs to be treated. Sludge pyrolysis is a common means of sludge treatment. Sludge pyrolysis utilizes the thermal instability of organic matter in sludge and heats it under anaerobic conditions to cause thermal cracking of the organic matter. The organic matter is cracked according to its carbon-hydrogen ratio to form a gas phase (pyrolysis gas) and a solid phase (solid residue) with relatively high utilization value. These products have the characteristics of easy storage, easy transportation, and convenient use, providing an effective way for sludge reduction, stabilization, harmlessness, and resource utilization.

[0003] A sludge pyrolysis device is a device used to treat sludge. Specifically, sludge is poured into the pyrolysis device, and the heating element in the pyrolysis device is used to heat the sludge in an anaerobic environment to achieve the pyrolysis process of the sludge. Due to the space limitation of the sludge pyrolysis device, the sludge entering the pyrolysis device will be in a piled state. In this way, the sludge close to the heating element and the sludge far from the heating element are unevenly heated, resulting in uneven sludge pyrolysis, which will cause over-pyrolysis and insufficient pyrolysis of the sludge. In addition, the residue formed after sludge pyrolysis is not discharged in time, which will also affect the pyrolysis efficiency of new sludge, resulting in low sludge treatment efficiency. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art, the present invention proposes a building sludge treatment system and a treatment process. During the rotation process, the present invention can convey the piled sludge at the lower part inside the pyrolysis sleeve upwards, so that the sludge is spread out, increasing the heating area between the sludge and the heating element in the spiral plate, and improving the sludge pyrolysis efficiency. In addition, after the sludge is spread out by the main spiral plate, it avoids the problems of low pyrolysis efficiency and uneven pyrolysis caused by sludge accumulation. Since the solid residue formed after the sludge in the pyrolysis sleeve is pyrolyzed can be discharged in time, it avoids the influence of the residue remaining on the pyrolysis efficiency and effect of new sludge, enabling the sludge to achieve a continuous pyrolysis process.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: A building sludge treatment system described in the present invention includes a pyrolysis tank and a bracket fixedly connected to the lower half of the pyrolysis tank; a partition plate is fixedly connected to a position on the inner wall of the pyrolysis tank near the upper part; the partition plate divides the internal space of the pyrolysis tank into an upper cavity and a lower cavity; a pyrolysis sleeve is fixedly connected to the upper surface of the partition plate; there is a gap between the upper end of the pyrolysis sleeve and the top of the inner wall of the pyrolysis tank; a slag discharge gap is formed between the outer wall of the pyrolysis sleeve and the inner wall of the pyrolysis tank; the pyrolysis sleeve is concentric with the cross-section of the pyrolysis tank; a central rod is rotatably connected to the center of the upper cavity; the upper end of the central rod extends to the outside of the top of the pyrolysis tank and is fixedly connected to the output shaft of a motor; an exhaust pipe is fixedly connected to a position on the outer wall of the pyrolysis tank near the upper part; the exhaust pipe communicates with the upper position of the upper cavity; a sewage inlet pipe is fixedly connected to a position on the outer wall of the pyrolysis tank near the lower part; the sewage inlet pipe communicates with the upper position inside the pyrolysis sleeve; a main spiral plate is arranged between the outer wall of the central rod and the inner wall of the pyrolysis sleeve; the inner edge of the main spiral plate is in contact and fixedly connected with the outer wall of the central rod; the outer edge of the main spiral plate is in contact with the inner wall of the pyrolysis sleeve; a heating element is arranged inside the main spiral plate.

[0006] Preferably, a slag discharge port communicating with the lower position of the slag discharge gap is arranged at a position on the outer wall of the pyrolysis tank near the upper part; a slag discharge door is covered inside the slag discharge port; an inclined ring is fixedly connected to a position inside the slag discharge gap near the lower part; the height of the upper surface of the inclined ring increases as it is farther away from the slag discharge port.

[0007] Preferably, an opening ring is arranged in the slag discharge gap; the shape of the opening ring is spiral; the number of turns of the opening ring is greater than one turn and less than two turns; the opening ring has elasticity; when the slag discharge door is opened, the upper end of the opening ring is stacked on the lower end; when the slag discharge door is closed, the upper end of the opening ring is far away from the lower end.

[0008] Preferably, a driving groove is arranged on the outer wall of the inclined ring close to the slag discharge door; a driving strip is slidably and sealingly connected in the driving groove; the driving strip is connected to the bottom of the driving groove through a first spring; a driven groove is arranged on the upper surface of the inclined ring; the bottom of the driven groove is communicated with the bottom of the driving groove through a first air hole; a driven strip is slidably and sealingly connected in the driven groove; the upper end of the driven strip abuts against the upper end of the opening ring; a liquid medium is filled in the driven groove and the driving groove.

[0009] Preferably, a drain hole is arranged vertically through the partition plate; the upper end of the drain hole communicates with the inside of the pyrolysis sleeve, and the lower end communicates with the lower cavity; a drain pipe is arranged at the lower end of the pyrolysis tank; the drain pipe communicates with the lower cavity; the lower end of the main spiral plate abuts against the upper surface of the partition plate; a shovel block is fixedly connected to the lower end of the main spiral plate.

[0010] Preferably, a secondary spiral groove is provided on the lower surface of the main spiral plate; a secondary spiral plate is provided in the secondary spiral groove; a return hole is provided through between the upper inner wall of the secondary spiral groove and the upper surface of the main spiral plate.

[0011] Preferably, a rotating groove is provided at the lower end of the central rod; a rotating rod is rotatably connected in the rotating groove; the lower end of the rotating rod is fixedly connected to the partition plate; a shifting rod is provided through and rotatably connected between the inner wall of the rotating groove and the outer wall of the central rod; a cylindrical gear is fixedly connected to one end of the shifting rod located in the rotating groove; an end face tooth ring is sleeved on the outer wall of the rotating rod; the end face tooth ring is meshed and driven with the cylindrical gear; a shifting plate is connected to the outer wall of the end of the shifting rod away from the rotating rod.

[0012] Preferably, a shifting groove is provided on the outer wall of the shifting rod; the shifting plate is slidably connected in the shifting groove; the shifting plate is connected to the bottom of the shifting groove through a second spring.

[0013] Preferably, the secondary spiral plate is elastic; the secondary spiral plate is movably connected in the secondary spiral groove; a loosening rod is movably connected in the return hole; the outer diameter of the loosening rod is smaller than the aperture of the return hole; the lower end of the loosening rod is fixedly connected to the secondary spiral plate; the upper end of the secondary spiral plate is fixedly connected to the upper end of the main spiral plate; the secondary spiral plate moves up and down in the secondary spiral groove under the fluctuation of the shifting plate.

[0014] A building sludge treatment process, which is applicable to the above-mentioned building sludge treatment system, and the process steps are as follows: S1: The sludge enters the lower position inside the pyrolysis sleeve along the sewage inlet pipe, and the motor drives the central rod and the main spiral plate to rotate in the reverse direction; S2: The excess sewage in the sludge at the lower position inside the pyrolysis sleeve flows through the drain holes into the lower cavity and finally discharges along the drain pipe. During the reverse rotation of the main spiral plate, the shovel block is driven to shovel on the upper surface of the partition plate. After the sludge is shoveled up by the shovel block, it is conveyed upward along the spiral gap formed by the main spiral plate; S3: The sewage in the sludge on the upper surface of the main spiral plate will flow into the secondary spiral groove along the return hole, finally flow downward along the upper surface of the secondary spiral plate, and finally flow out through the notch and pass through the drain hole into the lower cavity; S4: During the rotation of the central rod and the main spiral plate, the shifting rod drives the shifting plate to rotate. The shifting plate will push the sludge on the upper surface of the main spiral plate upward. The shifting plate will intermittently squeeze the secondary spiral plate to move in the secondary spiral groove, and the secondary spiral plate will drive the loosening rod to move in the return hole; S5: The sludge on the main spiral plate is pyrolyzed under the heating of the heating element to form pyrolysis gas and solid residues. The pyrolysis gas is discharged along the exhaust pipe; the solid residues will be conveyed upward under the rotation of the main spiral plate, and finally are thrown out under the centrifugal action and fall into the slag discharge gap. The slag discharge door can be opened regularly for cleaning.

[0015] The beneficial effects of the present invention are as follows: 1. During the rotation process of the present invention, the sludge accumulated at the lower part inside the pyrolysis sleeve can be conveyed upwards, causing the sludge to spread out, increasing the heating area between the sludge and the heating elements inside the spiral plate, and improving the sludge pyrolysis efficiency. In addition, since the sludge is spread out by the main spiral plate, the problems of low pyrolysis efficiency and uneven pyrolysis caused by sludge accumulation are avoided. Since the solid residue formed after the pyrolysis of the sludge inside the pyrolysis sleeve can be discharged in time, the influence of the residue of the solid residue on the pyrolysis efficiency and effect of the new sludge is avoided, enabling the sludge to undergo a continuous pyrolysis process.

[0016] 2. In the present invention, the sludge will be conveyed upwards along the upper surface of the main spiral plate. The excess sewage in the sludge on the upper surface of the main spiral plate will flow into the secondary spiral groove along the return holes and flow downwards along the upper surface of the secondary spiral plate. Since the excess sewage in the sludge on the upper surface of the main spiral plate does not flow back along the upper surface of the main spiral plate, the conveyance of the sludge along the main spiral plate upwards is ensured, improving the sludge conveyance efficiency.

[0017] 3. During the upward movement of the secondary spiral plate of the present invention, the loosening rod will be driven to move inside the return hole. The return hole remains unobstructed under the loosening of the loosening rod. When the secondary spiral plate is pressed upwards, the upper end of the loosening rod will be driven to extend out of the return hole. When the upper end of the loosening rod protrudes from the upper surface of the main spiral plate, the mud blocks on the connection block on the upper surface of the main spiral plate will be pushed open. After being pushed open by the loosening rod, the mud blocks will become loose. In this way, the mud blocks on the upper surface of the main spiral plate are more likely to be conveyed upwards along the spiral gap after being loosened, ensuring the discharge effect of the solid residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 is a perspective view of the treatment system in the present invention; Figure 2 is Figure 1 a cross-sectional view of Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is a perspective view of the pyrolysis sleeve and the main spiral plate in the present invention; Figure 5 is a cross-sectional view of the inclined ring in the present invention; Figure 6 is a perspective view of the main spiral plate and the secondary spiral plate in the present invention; Figure 7 is a perspective view of the dialing rod and the rotating rod in the present invention; Figure 8 is a process flow chart of the present invention.

[0020] In the figure: pyrolysis tank 1, support 11, upper cavity 12, lower cavity 13, exhaust pipe 14, sewage inlet pipe 15, slag discharge port 16, slag discharge door 17, drain pipe 18, partition plate 2, drain hole 21, pyrolysis sleeve 3, slag discharge gap 31, opening ring 32, central rod 4, motor 41, rotating groove 42, rotating rod 43, end face gear ring 45, main spiral plate 5, shovel block 51, secondary spiral groove 52, secondary spiral plate 53, return hole 54, loosening rod 55, inclined ring 6, active groove 61, active strip 62, first spring 63, driven groove 64, first air hole 65, driven strip 66, dial rod 7, cylindrical gear 71, dial plate 72, dial groove 73, second spring 74. Detailed implementation mode

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0022] As Figures 1 to 8 shown, the present invention includes the following embodiments: Embodiment 1: A building sludge treatment system includes a pyrolysis tank 1 and a support 11 fixedly connected to the lower half of the pyrolysis tank 1; a partition plate 2 is fixedly connected to the inner wall of the pyrolysis tank 1 at a position close to the upper part; the partition plate 2 divides the internal space of the pyrolysis tank 1 into an upper cavity 12 and a lower cavity 13; the upper surface of the partition plate 2 is fixedly connected to a pyrolysis sleeve 3; there is a gap between the upper end of the pyrolysis sleeve 3 and the top of the inner wall of the pyrolysis tank 1; a slag discharge gap 31 is formed between the outer wall of the pyrolysis sleeve 3 and the inner wall of the pyrolysis tank 1; the pyrolysis sleeve 3 is concentric with the cross-section of the pyrolysis tank 1; the central rod 4 is rotatably connected to the center of the upper cavity 12; the upper end of the central rod 4 extends to the outside of the top of the pyrolysis tank 1 and is fixedly connected to the output shaft of the motor 41; the exhaust pipe 14 is fixedly connected to the outer wall of the pyrolysis tank 1 at a position close to the upper part; the exhaust pipe 14 communicates with the upper position of the upper cavity 12; the sewage inlet pipe 15 is fixedly connected to the outer wall of the pyrolysis tank 1 at a position close to the lower part; the sewage inlet pipe 15 communicates with the upper position inside the pyrolysis sleeve 3; a main spiral plate 5 is arranged between the outer wall of the central rod 4 and the inner wall of the pyrolysis sleeve 3; the inner edge of the main spiral plate 5 is in contact with and fixedly connected to the outer wall of the central rod 4; the outer edge of the main spiral plate 5 is in contact with the inner wall of the pyrolysis sleeve 3; a heating element is arranged inside the main spiral plate 5.

[0023] In this embodiment, a slag discharge port 16 communicating with the lower position of the slag discharge gap 31 is arranged at the upper position of the outer wall of the pyrolysis tank 1; a slag discharge door 17 is covered inside the slag discharge port 16; an inclined ring 6 is fixedly connected to the lower position inside the slag discharge gap 31; the height of the upper surface of the inclined ring 6 increases as it is farther away from the slag discharge port 16.

[0024] After the sludge enters the lower position inside the pyrolysis sleeve 3 along the sewage inlet pipe 15, the motor 41 drives the central rod 4 to rotate. The outer shell of the motor 41 is fixedly connected to the outer wall of the top of the pyrolysis tank 1. During the rotation of the central rod 4, the main spiral plate 5 is driven to rotate. The main spiral plate 5 rotates in the reverse direction. The main spiral plate 5 is equivalent to an auger. During the rotation, it can convey the sludge accumulated at the lower position inside the pyrolysis sleeve 3 upwards, causing the sludge to spread out, increasing the heating area between the sludge and the heating elements inside the spiral plate, and improving the pyrolysis efficiency of the sludge. In addition, after the sludge is spread out by the main spiral plate 5, it avoids the problems of low pyrolysis efficiency and uneven pyrolysis caused by sludge accumulation. The heating elements transfer heat to the sludge on the main spiral plate 5. During the process of the accumulated sludge being shoveled up by the heated main spiral plate 5, since the sludge is heated and softened and is more easily shoveled up, the sludge is conveyed more stably upwards along the spiral gap of the main spiral plate 5. During the upward conveyance of the sludge, it is gradually heated. The organic matter in the sludge has thermal instability. Under anaerobic conditions, the organic matter in the sludge undergoes thermal cracking. The organic matter in the sludge is cracked according to its carbon-hydrogen ratio, forming pyrolysis gas and solid residues with higher utilization value. The pyrolysis gas will flow upwards along the spiral gap and finally be discharged along the exhaust pipe 14, while the solid residues are conveyed upwards as the main spiral plate 5 continues to rotate. Finally, after the solid residues are exposed from the upper end of the pyrolysis sleeve 3, the solid residues are thrown out under the action of centrifugal force and will fall into the slag discharge gap 31. The remaining temperature of the solid residues will be transferred back to the sludge just entering the pyrolysis sleeve 3, realizing the preheating of the sludge before pyrolysis, thus greatly improving the pyrolysis efficiency of the sludge. The sludge in the slag discharge gap 31 will converge towards the slag discharge port 16 under the guidance of the upper surface of the inclined ring 6. After the solid residues in the slag discharge gap 31 converge to a certain extent, the slag discharge door 17 will be opened for cleaning. After the cleaning is completed, the slag discharge door 17 is closed again. Since the solid residues formed after the pyrolysis of the sludge in the pyrolysis sleeve 3 can be discharged in time, it avoids the influence of the residue of the solid residues on the pyrolysis efficiency and effect of the new sludge, enabling the sludge to achieve a continuous pyrolysis process.

[0025] Embodiment 2: An opening ring 32 is provided in the slag discharge gap 31; the opening ring 32 is in a spiral shape; the number of turns of the opening ring 32 is greater than one turn and less than two turns; the opening ring 32 has elasticity; when the slag discharge door 17 is opened, the upper end of the opening ring 32 overlaps the lower end; when the slag discharge door 17 is closed, the upper end of the opening ring 32 is away from the lower end.

[0026] In this embodiment, an active groove 61 is provided on the outer wall of the inclined ring 6 close to the slag discharge door 17; an active bar 62 is slidably and sealingly connected in the active groove 61; the active bar 62 is connected to the bottom of the active groove 61 through a first spring 63; a driven groove 64 is provided on the upper surface of the inclined ring 6; the bottom of the driven groove 64 is communicated with the bottom of the active groove 61 through a first air hole 65; a driven bar 66 is slidably and sealingly connected in the driven groove 64; the upper end of the driven bar 66 abuts against the upper end of the opening ring 32; the driven groove 64 and the active groove 61 are filled with a liquid medium.

[0027] During the rotation of the main spiral plate 5, the solid residue will be thrown out from the upper end of the pyrolysis sleeve 3. The solid residue will enter the slag discharge gap 31 under the action of gravity and fall on the upper surface of the opening ring 32. Since the upper end of the opening ring 32 is pushed away from the lower end under the support of the driven bar 66, the opening ring 32 is in a spiral shape at this time. The solid residue will slide down along the upper surface of the opening ring 32, pass through the gap formed between the upper end and the lower end of the opening ring 32 and then move to the lower part of the opening ring 32. The solid residue will converge on the upper surface of the inclined ring 6 and converge towards the slag discharge port 16 under the inclined state of the upper surface of the inclined ring 6. After the solid residue in the slag discharge gap 31 converges to a certain extent, the slag discharge door 17 will be unlocked and opened. After the slag discharge door 17 is turned over and opened, it will move away from the active bar 62; the first spring 63 will push the active bar 62 to slide along the active groove 61 and away from the bottom of the active groove 61, so that the space in the active groove 61 expands to form a negative pressure. The liquid medium in the driven groove 64 will enter the active groove 61 along the first air hole 65. The active bar 62 will slide and move down in the active groove 61. During the downward movement of the active bar 62, the pressing on the upper end of the opening ring 32 will be released. In this way, the upper end of the opening ring 32 will fold up under its own elastic force. The upper end of the opening ring 32 will approach and stack on the lower end, so that the opening position of the opening ring 32 is closed, so that the gas above the opening ring 32 is temporarily sealed to prevent the leakage of pyrolysis gas. In this way, the staff can clean the solid residue in the slag discharge gap 31 below the opening ring 32. In this way, the solid residue can be cleaned without affecting the sludge pyrolysis; after the solid residue is cleaned, the slag discharge door 17 is closed and locked. The slag discharge door 17 will squeeze the active bar 62. The active bar 62 will be pressed to overcome the first spring 63 and approach the bottom of the active groove 61 along the active groove 61, so that the liquid medium in the active groove 61 will enter the driven groove 64 along the first air hole 65. The driven bar 66 will move up under the extrusion of the liquid medium. The upper end of the driven bar 66 will push the upper end of the opening ring 32 away. After the upper end and the lower end of the opening ring 32 are separated from each other to form a gap, the opening ring 32 will be opened, so that the solid residue will continue to converge towards the slag discharge gap 31 below the opening ring 32.

[0028] Embodiment 3: The partition plate 2 is provided with drainage holes 21 penetrating up and down; the upper end of the drainage hole 21 communicates with the inner side of the pyrolysis sleeve 3, and the lower end communicates with the lower cavity 13; the lower end of the pyrolysis tank 1 is provided with a drain pipe 18; the drain pipe 18 communicates with the lower cavity 13; the lower end of the main spiral plate 5 abuts against the upper surface of the partition plate 2; the lower end of the main spiral plate 5 is fixedly connected with a shovel block 51.

[0029] In this embodiment, a secondary spiral groove 52 is provided on the lower surface of the main spiral plate 5; a secondary spiral plate 53 is provided in the secondary spiral groove 52; a return hole 54 is provided through between the upper inner wall of the secondary spiral groove 52 and the upper surface of the main spiral plate 5.

[0030] Before pyrolysis, the sludge needs to be dehydrated and concentrated to reduce the water content in the sludge. Excessive sewage content in the sludge will affect sludge pyrolysis. After the sludge enters the lower position inside the pyrolysis sleeve 3 along the sewage inlet pipe 15, the excess sewage in the sludge will flow into the lower cavity 13 along the drainage holes 21. As the main spiral plate 5 rotates, the lower end of the main spiral plate 5 will drive the shovel block 51 to shovel away the sludge on the upper surface of the partition plate 2, and the sludge will be conveyed upward along the upper surface of the main spiral plate 5. The excess sewage in the sludge on the upper surface of the main spiral plate 5 will flow into the secondary spiral groove 52 along the return hole 54 and flow downward along the upper surface of the secondary spiral plate 53. Since the excess sewage in the sludge on the upper surface of the main spiral plate 5 does not flow back along the upper surface of the main spiral plate 5, it ensures that the sludge is conveyed upward along the main spiral plate 5, improving the sludge conveying efficiency. After the sludge on the upper surface of the partition plate 2 is shoveled away, the exposed drainage holes 21 just allow the sewage to flow out, ensuring the sewage outflow efficiency; the sludge on the upper surface of the main spiral plate 5 is softened during heating, making the excess sewage in the sludge easier to flow back through the return hole 54.

[0031] Embodiment 4: A rotating groove 42 is provided at the lower end of the central rod 4; a rotating rod 43 is rotatably connected in the rotating groove 42; the lower end of the rotating rod 43 is fixedly connected with the partition plate 2; a shifting rod 7 is provided through and rotatably connected between the inner wall of the rotating groove 42 and the outer wall of the central rod 4; a cylindrical gear 71 is fixedly connected to one end of the shifting rod 7 located in the rotating groove 42; an end face tooth ring 45 is sleeved and fixedly connected to the outer wall of the rotating rod 43; the end face tooth ring 45 is meshed and driven with the cylindrical gear 71; a shifting plate 72 is connected to the outer wall of the shifting rod 7 away from the rotating rod 43.

[0032] In this embodiment, a shifting groove 73 is provided on the outer wall of the shifting rod 7; the shifting plate 72 is slidably connected in the shifting groove 73; the shifting plate 72 is connected to the bottom of the shifting groove 73 through a second spring 74.

[0033] In this embodiment, the auxiliary spiral plate 53 is elastic; the auxiliary spiral plate 53 is movably connected in the auxiliary spiral groove 52; the reflux hole 54 is movably connected to the loosening rod 55; the outer diameter of the loosening rod 55 is smaller than the aperture of the reflux hole 54; the lower end of the loosening rod 55 is fixedly connected to the auxiliary spiral plate 53; the upper end of the auxiliary spiral plate 53 is fixedly connected to the upper end of the main spiral plate 5; the auxiliary spiral plate 53 moves up and down in the auxiliary spiral groove 52 under the fluctuation of the dial plate 72.

[0034] When the main spiral plate 5 and the center rod 4 rotate under the control of the motor 41, the center rod 4 will drive the paddle 7 to move around the rotating rod 43. The end of the paddle 7 located in the rotating groove 42 is fixedly connected to the cylindrical gear 71. The cylindrical gear 71 is meshed with the end gear ring 45 for transmission, so that the cylindrical gear 71 will drive the paddle 7 to rotate. During the rotation of the paddle 7, the paddle plate 72 will be driven to paddle the sludge on the upper surface of the main spiral plate 5 upward. Since the paddle plate 72 is slidably connected to the paddle groove 73, the paddle plate 72 is in the spiral groove 42. The lever 7 is able to extend or retract into the lever groove 73 as the lever 7 rotates in the rotation gap, thereby avoiding jamming and maximizing the effect of the lever plate 72 on the surrounding sludge. The lever plate 72 squeezes the auxiliary spiral plate 53 during contact with the auxiliary spiral plate 53, and the lower surface of the auxiliary spiral plate 53 moves upward under pressure. During the upward movement of the auxiliary spiral plate 53, the loosening rod 55 is driven to move in the return hole 54. The return hole 54 remains unobstructed under the loosening of the loosening rod 55, and the auxiliary spiral plate 53 is driven to move upward under pressure. The upper end of the loosening rod 55 extends out of the reflux hole 54. In the process of the upper end of the loosening rod 55 protruding from the upper surface of the main spiral plate 5, the mud blocks on the upper surface of the main spiral plate 5 will be pushed away. The mud blocks will be loosened after being pushed away by the loosening rod 55. In this way, the mud blocks on the upper surface of the main spiral plate 5 are more easily transported upward along the spiral gap after being loosened, thereby ensuring the discharge effect of solid residues; in the process of the paddle plate 72 turning downward with the rotation of the paddle rod 7, the paddle plate 72 will separate from the auxiliary spiral plate 53, and the auxiliary spiral plate 53 will be loosened under its own elastic force. The auxiliary spiral groove 52 is expanded by rebounding downward, so that the space in the auxiliary spiral groove 52 changes again, and the loosening rod 55 will retract into the reflux hole 54 again with the movement of the auxiliary spiral plate 53. The shifting rod 7 will drive the shifting plate 72 to intermittently shift the auxiliary spiral plate 53, so that the auxiliary spiral plate 53 moves back and forth in the auxiliary spiral groove 52, so that the space in the auxiliary spiral groove 52 will change cyclically, thereby avoiding clogging of the auxiliary spiral plate 53; the auxiliary spiral groove 52 has a notch at the lower end to allow the sewage flowing back in the auxiliary spiral groove 52 to flow out.

[0035] Example 5: A construction sludge treatment process, which is applicable to the above-mentioned construction sludge treatment system, and the process steps are as follows: S1: Sludge enters the lower part of the thermal decomposition sleeve 3 along the sewage inlet pipe 15, and the motor 41 drives the central rod 4 and the main spiral plate 5 to rotate in the opposite direction; S2: The excess sewage in the sludge at the lower position near the inner side of the pyrolysis sleeve 3 passes through the drain holes 21 and flows into the lower cavity 13, and finally is discharged along the drain pipe 18. During the reverse rotation of the main spiral plate 5, the scraping block 51 will be driven to scrape on the upper surface of the partition plate 2. After the sludge is scraped up by the scraping block 51, it is conveyed upward along the spiral gap formed by the main spiral plate 5. S3: The sewage in the sludge on the upper surface of the main spiral plate 5 will flow into the auxiliary spiral groove 52 along the return holes 54, and finally flow downward along the upper surface of the auxiliary spiral plate 53, and finally flow out through the notch and pass through the drain holes 21 to enter the lower cavity 13. S4: During the rotation of the central rod 4 and the main spiral plate 5, the dial rod 7 will drive the dial plate 72 to rotate. The dial plate 72 will push the sludge on the upper surface of the main spiral plate 5 upward. The dial plate 72 will intermittently squeeze the auxiliary spiral plate 53 to move in the auxiliary spiral groove 52, and the auxiliary spiral plate 53 will drive the loosening rod 55 to move in the return holes 54. S5: The sludge on the main spiral plate 5 is pyrolyzed under the heating of the heating element to form pyrolysis gas and solid residues. The pyrolysis gas is discharged along the exhaust pipe 14; the solid residues will be conveyed upward under the rotation of the main spiral plate 5, and finally are thrown out under the centrifugal force and fall into the slag discharge gap 31, and the slag discharge door 17 can be opened regularly for cleaning.

[0036] Example 6: The components in the treatment system are all made of high-temperature resistant materials to meet the pyrolysis requirements.

[0037] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the attached Figure 1 shown orientation or positional relationship 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, so it cannot be understood as a limitation to the protection scope of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A building sludge treatment system, comprising a pyrolysis tank (1) and a bracket (11) fixedly connected to the lower half of the pyrolysis tank (1); characterized in that: At the upper position near the inner wall of the pyrolysis tank (1), a partition plate (2) is fixedly connected; the partition plate (2) divides the inner space of the pyrolysis tank (1) into an upper chamber (12) and a lower chamber (13); on the upper surface of the partition plate (2), a pyrolysis sleeve (3) is fixedly connected; there is a gap between the upper end of the pyrolysis sleeve (3) and the top of the inner wall of the pyrolysis tank (1); a slag discharge gap (31) is formed between the outer wall of the pyrolysis sleeve (3) and the inner wall of the pyrolysis tank (1); the pyrolysis sleeve (3) is concentric with the cross-section of the pyrolysis tank (1); at the center of the upper chamber (12), a central rod (4) is rotatably connected; the upper end of the central rod (4) extends to the outside of the top of the pyrolysis tank (1) and is fixedly connected to the output shaft of the motor (41); at the upper position near the outer wall of the pyrolysis tank (1), an exhaust pipe (14) is fixedly connected; the exhaust pipe (14) communicates with the upper position of the upper chamber (12); at the lower position near the outer wall of the pyrolysis tank (1), a sewage inlet pipe (15) is fixedly connected; the sewage inlet pipe (15) communicates with the upper position near the inner side of the pyrolysis sleeve (3); between the outer wall of the central rod (4) and the inner wall of the pyrolysis sleeve (3), a main spiral plate (5) is provided; the inner edge of the main spiral plate (5) is in contact and fixedly connected with the outer wall of the central rod (4); the outer edge of the main spiral plate (5) is in contact with the inner wall of the pyrolysis sleeve (3); a heating element is provided inside the main spiral plate (5).

2. The construction sludge treatment system according to claim 1, characterized in that: At the upper position near the outer wall of the pyrolysis tank (1), a slag discharge port (16) communicating with the lower position of the slag discharge gap (31) is provided; a slag discharge door (17) is covered inside the slag discharge port (16); at the lower position near the inside of the slag discharge gap (31), an inclined ring (6) is fixedly connected; the height of the upper surface of the inclined ring (6) increases as it is farther away from the slag discharge port (16).

3. The construction sludge treatment system according to claim 2, characterized in that: An opening ring (32) is provided inside the slag discharge gap (31); the shape of the opening ring (32) is spiral; the number of turns of the opening ring (32) is more than one turn and less than two turns; the opening ring (32) has elasticity; when the slag discharge door (17) is opened, the upper end of the opening ring (32) is stacked on the lower end; when the slag discharge door (17) is closed, the upper end of the opening ring (32) is away from the lower end.

4. A building sludge treatment system according to claim 3, characterized in that: On the outer wall of the inclined ring (6) near the slag discharge door (17), a driving groove (61) is provided; a driving strip (62) is slidably and sealingly connected inside the driving groove (61); the driving strip (62) is connected with the bottom of the driving groove (61) through a first spring (63); on the upper surface of the inclined ring (6), a driven groove (64) is provided; the bottom of the driven groove (64) is communicated with the bottom of the driving groove (61) through a first air hole (65); a driven strip (66) is slidably and sealingly connected inside the driven groove (64); the upper end of the driven strip (66) abuts against the upper end of the opening ring (32); the driven groove (64) and the driving groove (61) are filled with a liquid medium.

5. A building sludge treatment system according to claim 1, characterized in that: The separating disk (2) is provided with drainage holes (21) penetrating through it vertically; the upper end of each drainage hole (21) communicates with the inner side of the pyrolysis sleeve (3), and the lower end communicates with the lower cavity (13); the lower end of the pyrolysis tank (1) is provided with a drain pipe (18); the drain pipe (18) communicates with the lower cavity (13); the lower end of the main spiral plate (5) abuts against the upper surface of the separating disk (2); the lower end of the main spiral plate (5) is fixedly connected with a shovel block (51).

6. The construction sludge treatment system according to claim 5, characterized in that: The lower surface of the main spiral plate (5) is provided with an auxiliary spiral groove (52); an auxiliary spiral plate (53) is arranged in the auxiliary spiral groove (52); a return hole (54) is penetratingly arranged between the upper inner wall of the auxiliary spiral groove (52) and the upper surface of the main spiral plate (5).

7. A building sludge treatment system according to claim 6, characterized in that: The lower end of the central rod (4) is provided with a rotating groove (42); a rotating rod (43) is rotatably connected in the rotating groove (42); the lower end of the rotating rod (43) is fixedly connected with the separating disk (2); a shifting rod (7) is penetratingly and rotatably connected between the inner wall of the rotating groove (42) and the outer wall of the central rod (4); a cylindrical gear (71) is fixedly connected to one end of the shifting rod (7) located in the rotating groove (42); an end face gear ring (45) is sleeved on the outer wall of the rotating rod (43); the end face gear ring (45) is in meshing transmission with the cylindrical gear (71); a shifting plate (72) is connected to the outer wall of the shifting rod (7) far away from the rotating rod (43).

8. A building sludge treatment system according to claim 7, characterized in that: The outer wall of the shifting rod (7) is provided with a shifting groove (73); the shifting plate (72) is slidably connected in the shifting groove (73); the shifting plate (72) is connected with the bottom of the shifting groove (73) through a second spring (74).

9. An architectural sludge treatment system according to claim 7, characterized in that: The auxiliary spiral plate (53) is elastic; the auxiliary spiral plate (53) is movably connected in the auxiliary spiral groove (52); a loosening rod (55) is movably connected in the return hole (54); the outer diameter of the loosening rod (55) is smaller than the aperture of the return hole (54); the lower end of the loosening rod (55) is fixedly connected with the auxiliary spiral plate (53); the upper end of the auxiliary spiral plate (53) is fixedly connected with the upper end of the main spiral plate (5); the auxiliary spiral plate (53) moves up and down in the auxiliary spiral groove (52) under the fluctuation of the shifting plate (72).

10. A building sludge treatment process, which is applicable to the building sludge treatment system described in any one of claims 1-9, characterized in that, The technological steps are as follows: S1: The sludge enters the lower position inside the pyrolysis sleeve (3) along the sewage inlet pipe (15), and the motor (41) drives the central rod (4) and the main spiral plate (5) to rotate reversely; S2: The excess sewage in the sludge at the lower position inside the pyrolysis sleeve (3) flows through the drainage holes (21) into the lower cavity (13), and finally is discharged along the drain pipe (18). During the reverse rotation of the main spiral plate (5), the shovel block (51) is driven to shovel on the upper surface of the separating disk (2). After the sludge is shoveled up by the shovel block (51), it is conveyed upward along the spiral gap formed by the main spiral plate (5); S3: The sewage in the sludge on the upper surface of the main spiral plate (5) flows into the auxiliary spiral groove (52) along the return hole (54), and finally flows downward along the upper surface of the auxiliary spiral plate (53), and finally flows out through the notch and passes through the drainage hole (21) into the lower cavity (13); S4: During the rotation of the central rod (4) and the main spiral plate (5), the shifting rod (7) drives the shifting plate (72) to rotate, and the shifting plate (72) shifts the sludge on the upper surface of the main spiral plate (5) upward, and the shifting plate (72) intermittently squeezes the auxiliary spiral plate (53) to move in the auxiliary spiral groove (52), and the auxiliary spiral plate (53) drives the loosening rod (55) to move in the reflux hole (54); S5: The sludge on the main spiral plate (5) is pyrolyzed by the heating element to form pyrolysis gas and solid residue. The pyrolysis gas is discharged along the exhaust pipe (14); the solid residue is transported upward under the rotation of the main spiral plate (5), and finally thrown out under the centrifugal action and falls into the slag discharge gap (31). The slag discharge door (17) can be opened regularly for cleaning.

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