A sludge drying device

Abstract

The present invention discloses a sludge drying device, comprising a base and a top plate arranged above the base, wherein the lower end of the top plate is provided with a first side plate and a second side plate, and further comprising: a dewatering mechanism arranged above the base and used to remove moisture from the sludge; a preheating mechanism used to preheat the sludge after dewatering by the dewatering mechanism to dry the surface of the sludge; a drying mechanism used to dry the mud blocks preheated by the preheating mechanism to dry the inside of the mud blocks; and a heat supply mechanism used to heat the water flowing out of the dewatering mechanism and transfer the heat to the preheating mechanism and the drying mechanism. The present invention ensures that the sludge is always in a preheated state by providing a preheating component in the preheating mechanism, continuously directing mud blocks onto the conveyor belt, increasing the rate of drying the mud blocks, and reserving sufficient time to dry the surface of the sludge.

Description

Technical Field

[0001] The invention relates to a drying device, in particular to a sludge drying device. Background Art

[0002] Silt is a clay soil that is deposited in still or slow-flowing water environments, formed through biochemical processes, with a natural water content greater than the liquid limit and a natural porosity greater than or equal to 1.5. Formed in the presence of microorganisms, this recent sediment is rich in organic matter and typically appears grayish-black. During the processing of salvaged silt, drying equipment is typically used to dry it, making it easier to transport.

[0003] In the prior art, when drying sludge, the surface of the sludge is easily dried, which can achieve the purpose of quickly drying the sludge, but the interior of the sludge is difficult to dry, and the same drying effect as the sludge surface cannot be achieved, thereby reducing the overall drying efficiency of the sludge. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a sludge drying device.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A sludge drying device comprises a base and a top plate arranged above the base, wherein a first side plate and a second side plate are arranged at the lower end of the top plate, and further comprises:

[0007] a water removal mechanism, disposed above the base and used to remove water from the sludge;

[0008] A preheating mechanism, used for preheating the sludge after dewatering by the dewatering mechanism to dry the surface of the sludge;

[0009] a drying mechanism, used for drying the mud blocks preheated by the preheating mechanism, so as to dry the interior of the mud blocks;

[0010] The heating mechanism heats the water flowing out of the dewatering mechanism and transmits the heat to the preheating mechanism and the drying mechanism.

[0011] Preferably, the water removal mechanism includes:

[0012] A support plate is provided at the upper end of the base;

[0013] A water removal tank is provided at the upper end of the support plate, wherein the bottom end of the water removal tank is provided with a water outlet pipe, the top end is provided with a discharge main pipe, and the side wall near the bottom end is provided with a feed pipe;

[0014] An auger is provided in the dewatering tank and is used to transport the sludge from the bottom to the top of the dewatering tank to remove water from the sludge;

[0015] A rotating shaft is connected to the auger and drives the auger to rotate. A first motor is provided on the rotating shaft for driving the rotating shaft to rotate.

[0016] Preferably, the preheating mechanism includes:

[0017] A preheating component is provided on one side of the dewatering tank and preheats the sludge conveyed from the dewatering tank;

[0018] A cutter is provided above the preheating assembly and cuts the mud block preheated by the preheating assembly to expose the undried portion inside the preheated mud block. A cylinder is provided at the upper end of the cutter for driving the cutter to move vertically.

[0019] A blocking piece is vertically arranged on the cutter, moves synchronously with the cutter when cutting mud blocks and blocks the mud in the water removal tank from entering the preheating component;

[0020] A conveyor belt is provided below the preheating assembly and is used for conveying the cut mud blocks to the drying mechanism. The conveyor belt is provided with a plurality of evenly distributed partitions.

[0021] Preferably, the preheating component includes:

[0022] Two preheating boxes, for accommodating the sludge transported from the dewatering tank and preheating the sludge, the preheating boxes being provided with a discharge branch pipe for connecting to the discharge main pipe, and the preheating boxes being further provided with a feed port for communicating with the discharge branch pipe, the blocking piece blocking the feed port when moving synchronously with the cutter;

[0023] A first discharge port is provided at the bottom of the two preheating boxes, and is used to guide the mud blocks in the preheating boxes onto the conveyor belt;

[0024] a blocking plate, provided on the first discharge port and used to block the first discharge port, wherein the length of the blocking plate is twice the length of the first discharge port;

[0025] The power member is arranged on the blocking plate and is used to drive the two blocking plates to move in the same direction, so that the bottoms of the two preheating boxes can discharge materials alternately and continuously, thereby extending the drying time of the sludge in the preheating box.

[0026] Preferably, the power member includes:

[0027] A screw rod is provided through the two blocking plates and is threadedly connected to the two blocking plates;

[0028] A limiting rod is symmetrically arranged on the two blocking plates with respect to the screw rod to limit the movement of the blocking plates;

[0029] The second motor is connected to the screw through a coupling and is used to drive the screw to rotate.

[0030] Preferably, the drying mechanism includes:

[0031] A drying box is provided on one side of the conveyor belt, and is used to dry the mud blocks that are discharged from the preheating box and expose the internal undried parts. The bottom of the drying box is provided with a second discharge port;

[0032] The first inclined plate and the second inclined plate are respectively arranged on the left and right sides of the drying box and are staggered in height. The mud blocks slide down from the first inclined plate and the second inclined plate to the second discharge port to extend the sliding path of the mud blocks in the drying box.

[0033] Preferably, one end of the first inclined plate and the second inclined plate close to the inner wall of the drying box is provided with a connecting rod and is rotatably connected to the drying box through the connecting rod;

[0034] Torsion springs are sleeved on both ends of the connecting rod, one end of the torsion spring is connected to the connecting rod, and the other end is connected to the inner wall of the drying box, and is used to restore the first inclined plate and the second inclined plate to their original positions after rotating downward.

[0035] Preferably, the heating mechanism includes:

[0036] A filter box is provided on one side of the water removal tank and is used to filter the silt water flowing out of the water removal tank;

[0037] a heating box, connected to the filter box, for heating the sludge water filtered from the filter box; the heating box is provided with a connecting pipe connected to the filter box, and the connecting pipe is provided with a water pump;

[0038] A hot water pipe, one end of which is connected to the preheating tank and the other end of which is connected to the heating tank, for transporting the water heated in the preheating tank to the heating tank;

[0039] The heating component transmits the heat heated in the heating box to the preheating box and the drying box.

[0040] Preferably, the heating component includes:

[0041] An air outlet main pipe, wherein a fan is provided on the air outlet main pipe;

[0042] The first outlet branch pipe and the second outlet branch pipe are connected to the outlet main pipe and are used to transport the hot air in the outlet main pipe;

[0043] a first air-spraying plate, provided on the outer wall of the preheating box, for spraying the hot air transported by the first air outlet branch pipe onto the preheating box;

[0044] The second air-spraying plate is arranged on the outer wall of the drying box and sprays the hot air transported by the second air outlet branch pipe onto the drying box.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The present invention reduces the water content in the sludge by providing a water removal mechanism, which facilitates the subsequent preheating of the sludge, reduces the preheating time, and improves efficiency;

[0047] 2. The present invention is provided with a preheating mechanism and a drying mechanism. The preheating mechanism preheats the sludge to dry the surface of the sludge. The drying mechanism further dries the preheated sludge blocks so that the interior of the sludge blocks is also dried, thereby improving the drying efficiency of the sludge and avoiding the situation where the surface of the sludge is dried but the interior is not dried. The preheating component in the preheating mechanism keeps the sludge in a preheated state at all times, continuously directing the sludge blocks onto the conveyor belt, thereby increasing the drying rate of the sludge blocks and reserving sufficient time for drying the surface of the sludge.

[0048] 3. The present invention is provided with a heating mechanism, which heats the sludge water in the dewatering mechanism and produces heat, and transmits the heat to the preheating mechanism and the drying mechanism, so that the preheating mechanism and the drying mechanism can dry the sludge, thereby realizing the reuse of the sludge water and reducing waste; the water in the preheating box is also heated when preheating the sludge, and this part of the water is then transmitted to the heating box, that is, the heat in the preheating box is provided to the heating box, reducing the loss of heat in the preheating box, reducing the heat supply in the heating box, and improving the heating efficiency of the heating box. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0050] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0051] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0052] Figure 3 It is a cross-sectional view of the water removal tank in the present invention;

[0053] Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle;

[0054] Figure 5 For the present invention Figure 2 Enlarged view of point B in the middle;

[0055] Figure 6 Schematic diagram of the structure of the preheating mechanism of the present invention;

[0056] Figure 7 This is a structural diagram of the separation of the preheating box and the blocking plate in the present invention;

[0057] Figure 8 It is a cross-sectional view of the drying box in the present invention;

[0058] Figure 9 It is a partial structural schematic diagram of the present invention;

[0059] Figure 10 This is a diagram showing the moving state of the blocking plate in the present invention.

[0060] In the picture:

[0061] 1. Base;

[0062] 21. Support plate; 22. Water removal tank; 23. Feed pipe; 24. First motor; 25. Auger; 26. Rotating shaft; 27. Discharge main pipe; 28. Water outlet pipe;

[0063] 3. Filter box; 31. Connecting pipe; 32. Water pump;

[0064] 4. Heating box; 41. Air outlet main pipe; 42. Fan; 43. First air outlet branch pipe; 44. Second air outlet branch pipe; 45. Hot water pipe;

[0065] 501, cylinder; 502, second motor; 503, discharge branch pipe; 504, preheating box; 505, first air blower; 506, feed port; 507, cutter; 508, blocking plate; 509, limit rod; 510, screw; 511, blocking plate; 512, first discharge port;

[0066] 6. Conveyor belt; 61. Partition plate; 62. Fixed plate;

[0067] 71. Drying box; 72. Second air blower; 73. Connecting rod; 74. First inclined plate; 75. Second inclined plate; 76. Torsion spring; 77. Second discharge port;

[0068] 8. Material receiving box; 9. Top plate; 10. First side plate; 11. Second side plate. DETAILED DESCRIPTION

[0069] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0070] See also Figure 1-10 A sludge drying device includes a base 1 and a top plate 9 provided above the base 1, a first side plate 10 and a second side plate 11 being provided at the lower end of the top plate 9, the base 1 and the top plate 9 being connected and fixed by a connecting plate, the first side plate 10 and the second side plate 11 being fixedly connected to the lower end of the top plate 9, and further comprising:

[0071] A water removal mechanism is provided above the base 1 and is used to remove water from the sludge;

[0072] A preheating mechanism, used for preheating the sludge after dewatering by the dewatering mechanism, so as to dry the surface of the sludge;

[0073] A drying mechanism, used for drying the mud blocks preheated by the preheating mechanism, so as to dry the interior of the mud blocks;

[0074] The heating mechanism heats the water flowing out of the water removal mechanism and transmits the heat to the preheating mechanism and the drying mechanism.

[0075] With this design, after the sludge is dewatered by the dewatering mechanism, the water content of the sludge is reduced, and the dewatered sludge is transported to the preheating mechanism; the preheating mechanism preheats the sludge to dry the surface of the sludge; the drying mechanism further dries the preheated mud blocks, drying the interior of the mud blocks as well, thereby improving the drying efficiency of the sludge and avoiding the situation where the surface of the sludge is dried but the interior is not. The heating mechanism heats the sludge water in the dewatering mechanism and generates heat, which is transported to the preheating mechanism and the drying mechanism, allowing the preheating mechanism and the drying mechanism to dry the sludge, thereby realizing the reuse of the sludge water and reducing waste.

[0076] In one embodiment, the water removal mechanism includes:

[0077] A support plate 21 is provided at the upper end of the base 1;

[0078] The water removal tank 22 is provided at the upper end of the support plate 21. The water removal tank 22 has a water outlet pipe 28 at the bottom, a material discharge main pipe 27 at the top, and a material feed pipe 23 on the side wall near the bottom.

[0079] The auger 25 is provided in the dewatering tank 22 and is used to transport the sludge from the bottom to the top of the dewatering tank 22 to remove water from the sludge;

[0080] The rotating shaft 26 is connected to the auger 25 and drives the auger 25 to rotate. The rotating shaft 26 is provided with a first motor 24 for driving the rotating shaft 26 to rotate.

[0081] In this design, the support plate 21 is fixedly connected to the upper end of the base 1, the dewatering tank 22 is fixedly installed on the support plate 21, the outlet pipe 28, the discharge main pipe 27 and the feed pipe 23 are all fixedly installed with the dewatering tank 22, the first motor 24 is fixedly connected to the upper end of the top plate 9, the output shaft of the first motor 24 is fixedly connected to the top end of the rotating shaft 26 through a coupling, the bottom end of the rotating shaft 26 is rotatably connected to the dewatering tank 22, and the auger 25 is fixedly connected to the rotating shaft 26.

[0082] In this design, the sludge enters the dewatering tank 22 from the feed pipe 23, the first motor 24 is started, the first motor 24 drives the rotating shaft 26 to rotate, the rotating shaft 26 drives the auger 25 to rotate, the auger 25 transports the sludge from the bottom to the top of the dewatering tank 22, and the sludge is discharged from the dewatering tank 22 through the discharge main pipe 27. The moisture in the sludge flows out from the outlet pipe 28 during the transportation process of the auger 25, thereby reducing the moisture contained in the sludge.

[0083] In one embodiment, the preheating mechanism comprises:

[0084] A preheating assembly is provided on one side of the dewatering tank 22 and preheats the sludge conveyed from the dewatering tank 22;

[0085] The cutter 507 is located above the preheating assembly and cuts the mud block preheated by the preheating assembly to expose the undried part inside the preheated mud block. The upper end of the cutter 507 is provided with a cylinder 501 for driving the cutter 507 to move vertically;

[0086] The blocking piece 508 is vertically mounted on the cutter 507 and moves synchronously with the cutter 507 when cutting mud blocks and blocks the mud in the water removal tank 22 from entering the preheating assembly;

[0087] The conveyor belt 6 is provided below the preheating assembly and is used to transport the cut mud blocks to the drying mechanism. The conveyor belt 6 is provided with a plurality of evenly distributed partitions 61 .

[0088] In this design, the cutter 507 and the blocking piece 508 are fixedly connected, the cylinder 501 is fixedly mounted on the top plate 9, the cylinder 501 is fixedly connected to the cutter 507, the upper end of the base 1 is fixedly connected to the fixed plate 62, and the fixed plate 62 is rotatably connected to the transmission shaft. The conveyor belt 6 is mounted on the fixed plate 62 via the transmission shaft, and the conveyor belt 6 is driven by the power source to transmit the mud blocks that fall on the conveyor belt 6. The conveyor belt 6 is divided into a horizontal transmission part and an inclined transmission part. The design of the partition 61 ensures that the mud blocks are evenly distributed on the conveyor belt 6, preventing the mud blocks from accumulating on the inclined transmission part of the conveyor belt 6, which is not conducive to the subsequent drying of the mud blocks separately.

[0089] In one embodiment, the preheating assembly comprises:

[0090] Two preheating boxes 504 are used to store and preheat the sludge discharged from the dewatering tank 22. The preheating boxes 504 are provided with a discharge branch pipe 503 for connecting to the discharge main pipe 27. The preheating boxes 504 are also provided with a feed port 506 for communicating with the discharge branch pipe 503. A sealing piece 508 and a cutter 507 move synchronously to seal the feed port 506.

[0091] The first discharge port 512 is provided at the bottom of the two preheating boxes 504 and is used to guide the mud blocks in the preheating boxes 504 onto the conveyor belt 6;

[0092] A blocking plate 511 is provided on the first discharge port 512 and is used to block the first discharge port 512. The length of the blocking plate 511 is twice the length of the first discharge port 512.

[0093] The power part is provided on the blocking plate 511 and is used to drive the two blocking plates 511 to move in the same direction, so that the bottoms of the two preheating boxes 504 can discharge materials alternately and continuously, thereby extending the drying time of the sludge in the preheating box 504.

[0094] In this design, the two preheating boxes 504 are fixedly installed on the first side plate 10 and the second side plate 11 respectively. After the preheating box 504 is filled with sludge and the surface of the sludge is preheated and dried, the cylinder 501 is started, and the cylinder 501 drives the cutter 507 to move downward. The cutter 507 cuts the mud blocks, exposing the internal undried parts of the preheated mud blocks. At the same time, the blocking piece 508 moves downward synchronously with the cutter 507. When the blocking piece 508 moves, it blocks the feed port 506, so that the sludge no longer enters the preheating box 504, ensuring that the mud block cutting work in the preheating box 504 is not disturbed.

[0095] In one embodiment, the power member includes:

[0096] The screw 510 is passed through the two blocking plates 511 and is threadedly connected to the two blocking plates 511;

[0097] The limiting rod 509 is symmetrically provided on the two blocking plates 511 with respect to the screw rod 510 to limit the movement of the blocking plates 511;

[0098] The second motor 502 is connected to the screw 510 via a coupling and is used to drive the screw 510 to rotate.

[0099] In this design, the second motor 502 is fixedly mounted on the first side plate 10, the output shaft of the second motor 502 is fixedly connected to the screw 510 through a coupling, the two ends of the limit rod 509 are fixedly connected to the first side plate 10 and the second side plate 11 respectively, and the limit rod 509 is slidably connected to the blocking plate 511.

[0100] In this design, the second motor 502 is started, the second motor 502 drives the screw 510 to rotate, and the sealing plate 511 moves horizontally. When the sealing plate 511 moves to the first discharge port 512, the preheating box 504 no longer discharges material. When the sealing plate 511 moves away from the first discharge port 512, the cut mud blocks are discharged from the first discharge port 512 to the conveyor belt 6. The blocking plate 511 moves horizontally in the same direction and its length is twice that of the first discharge port 512. The initial blocking state of the blocking plate 511 is as follows: the right end of the left blocking plate 511 is flush with the right end of the first discharge port 512, and the left end of the right blocking plate 511 is flush with the left end of the first discharge port 512. The second motor 502 first drives the screw 510 to move the blocking plate 511 to the left until the left first discharge port 512 is open. At this time, the right first discharge port 512 is still blocked. Then the second motor 502 drives the screw 510 to move the blocking plate 511 to the right, so that the right first discharge port 512 is open. In this way, the two first discharge ports 512 are alternately open, so that the sludge is always preheated and continuously discharged onto the conveyor belt 6. The drying rate of the sludge blocks is increased and sufficient time is reserved for drying the surface of the sludge.

[0101] In one embodiment, the drying mechanism includes:

[0102] The drying box 71 is provided on one side of the conveyor belt 6 and is used to dry the mud blocks that are exposed to the internal undried part of the mud blocks that are discharged from the preheating box 504. The bottom of the drying box 71 is provided with a second discharge port 77;

[0103] The first inclined plate 74 and the second inclined plate 75 are respectively arranged on the left and right sides of the drying box 71 and are staggered in height. The mud blocks slide from the first inclined plate 74 and the second inclined plate 75 to the second discharge port 77 to extend the sliding path of the mud blocks in the drying box 71.

[0104] With this design, the drying box 71 is fixedly mounted on the base 1, and a through groove is provided on the base 1 to communicate with the second discharge port 77 for discharge of the drying box 71. A receiving box 8 is provided below the second discharge port 77 for collecting the dried sludge. The design of the first inclined plate 74 and the second inclined plate 75 prolongs the drying time of the mud blocks in the drying box 71 to ensure that the inside of the mud blocks are also dried.

[0105] In one embodiment, a connecting rod 73 is provided at one end of the first inclined plate 74 and the second inclined plate 75 close to the inner wall of the drying box 71 and is rotatably connected to the drying box 71 through the connecting rod 73;

[0106] Torsion springs 76 are sleeved at both ends of the connecting rod 73. One end of the torsion spring 76 is connected to the connecting rod 73, and the other end is connected to the inner wall of the drying box 71, so as to restore the first inclined plate 74 and the second inclined plate 75 to their original positions after they rotate downward.

[0107] In this design, one end of the torsion spring 76 is fixedly connected to the connecting rod 73, and the other end is fixedly connected to the inner wall of the drying box 71. The first inclined plate 74 and the second inclined plate 75 are both fixedly connected to the connecting rod 73, and the connecting rod 73 is rotatably connected to the inner wall of the drying box 71.

[0108] Designed like this, Figure 8 As shown, the mud block falls on the second inclined plate 75 and slides onto the first inclined plate 74 through the second inclined plate 75. Due to the self-gravity of the mud block, the first inclined plate 74 and the second inclined plate 75 rotate downward. Then, under the action of the torsion spring 76, the first inclined plate 74 and the second inclined plate 75 are reset. This is repeated, and the broken soil generated by the mud block during the cutting and falling process is not easy to adhere to and remain on the first inclined plate 74 and the second inclined plate 75, and does not interfere with the long-term use of the first inclined plate 74 and the second inclined plate 75.

[0109] In one embodiment, the heating mechanism comprises:

[0110] The filter box 3 is provided on one side of the water removal tank 22 and is used to filter the silt water flowing out of the water removal tank 22;

[0111] The heating box 4 is connected to the filter box 3 and is used to heat the sludge water filtered from the filter box 3. The heating box 4 is provided with a connecting pipe 31 connected to the filter box 3, and the connecting pipe 31 is provided with a water pump 32;

[0112] The hot water pipe 45 is connected to the preheating tank 504 at one end and the heating tank 4 at the other end, and transports the heated water in the preheating tank 504 to the heating tank 4;

[0113] The heating component transfers the heat heated in the heating box 4 to the preheating box 504 and the drying box 71.

[0114] With this design, the filter box 3 and the heating box 4 are both placed on the base 1. The filter box 3 is provided with a filter screen and activated carbon for filtering, and the heating box 4 is provided with a heating pipe for heating the sludge water. The water in the dewatering tank 22 enters the filter box 3 for filtration to remove impurities. After the filtration is completed, it passes through the connecting pipe 31 and enters the heating box 4 under the action of the water pump 32. The heating pipe heats the sludge water. Since the sludge will carry a small amount of water into the preheating box 504, the water in the preheating box 504 is also heated when preheating the sludge. This water is then transported to the heating box 4, that is, the heat in the preheating box 504 is provided to the heating box 4, reducing the loss of heat in the preheating box 504 and the supply of heat in the heating box 4, thereby improving the heating efficiency of the heating box 4.

[0115] In one embodiment, the heating component includes:

[0116] An air outlet main pipe 41 is provided with a fan 42;

[0117] The first outlet branch pipe 43 and the second outlet branch pipe 44 are connected to the outlet main pipe 41 and are used to transport the hot air in the outlet main pipe 41;

[0118] The first air blowing plate 505 is provided on the outer wall of the preheating box 504 and blows the hot air delivered by the first air outlet pipe 43 onto the preheating box 504;

[0119] The second air blowing plate 72 is provided on the outer wall of the drying box 71 , and blows the hot air transported by the second air outlet branch pipe 44 onto the drying box 71 .

[0120] With this design, the heated sludge water generates hot air, which, under the action of the fan 42, flows to the first air outlet branch pipe 43 and the second air outlet branch pipe 44, and transports the heat to the preheating box 504 through the first air spray plate 505, and transports the heat to the drying box 71 through the second air spray plate 72, so that the preheating box 504 and the drying box 71 heat and dry the sludge.

[0121] Working principle: When in use, the sludge is dehydrated by the dewatering mechanism, and the water content in the sludge is reduced. The dehydrated sludge is then transported to the preheating mechanism; the preheating mechanism preheats the sludge to dry the surface of the sludge; the drying mechanism further dries the preheated mud blocks, so that the inside of the mud blocks is also dried, thereby improving the drying efficiency of the sludge and avoiding the situation where the surface of the sludge is dried but the inside is not. The heating mechanism heats the sludge water in the dewatering mechanism and generates heat, which is then transported to the preheating mechanism and the drying mechanism, so that the preheating mechanism and the drying mechanism can dry the sludge, thereby realizing the reuse of the sludge water and reducing waste.

[0122] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0123] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions in which A and B are satisfied at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are therefore intended to be embraced therein.

Claims

1. A sludge drying device, characterized in that: It comprises a base (1) and a top plate (9) arranged above the base (1), wherein a first side plate (10) and a second side plate (11) are provided at the lower end of the top plate (9), and further comprises: A water removal mechanism, arranged above the base (1) and used to remove water from the sludge; A preheating mechanism, used for preheating the sludge after dewatering by the dewatering mechanism to dry the surface of the sludge; a drying mechanism, used for drying the mud blocks preheated by the preheating mechanism, so as to dry the interior of the mud blocks; a heating mechanism for heating the water flowing out of the water removal mechanism and transferring the heat to the preheating mechanism and the drying mechanism; The water removal mechanism comprises: A support plate (21) is provided at the upper end of the base (1); A water removal tank (22) is provided at the upper end of the support plate (21), wherein the water removal tank (22) is provided with a water outlet pipe (28) at the bottom end, a material discharge main pipe (27) at the top end, and a material feed pipe (23) on the side wall near the bottom end; An auger (25) is provided in the dewatering tank (22) and is used to transport sludge from bottom to top to the top of the dewatering tank (22) to remove water from the sludge; A rotating shaft (26) is connected to the auger (25) and drives the auger (25) to rotate. A first motor (24) is provided on the rotating shaft (26) for driving the rotating shaft (26) to rotate. The preheating mechanism comprises: A preheating component is provided on one side of the dewatering tank (22) and preheats the sludge transported from the dewatering tank (22); A cutter (507) is provided above the preheating assembly and cuts the mud block preheated by the preheating assembly to expose the undried portion inside the preheated mud block. A cylinder (501) is provided at the upper end of the cutter (507) for driving the cutter (507) to move vertically. A blocking piece (508) is vertically arranged on the cutter (507), moves synchronously with the cutter (507) when cutting mud blocks, and blocks the mud in the dewatering tank (22) from entering the preheating component; A conveyor belt (6) is provided below the preheating assembly and is used to transport the cut mud blocks to the drying mechanism. The conveyor belt (6) is provided with a plurality of evenly distributed partitions (61); The preheating component comprises: Two preheating boxes (504) are used to accommodate the sludge transported from the dewatering box (22) and preheat the sludge. The preheating boxes (504) are provided with a discharge branch pipe (503) for connecting to the discharge main pipe (27). The preheating boxes (504) are also provided with a feed port (506) for communicating with the discharge branch pipe (503). The blocking piece (508) blocks the feed port (506) when it moves synchronously with the cutter (507). A first discharge port (512) is provided at the bottom of the two preheating boxes (504) and is used to guide the mud blocks in the preheating boxes (504) onto the conveyor belt (6); a blocking plate (511) provided on the first discharge port (512) and used to block the first discharge port (512); the blocking plate (511) is twice as long as the first discharge port (512); A power member is provided on the blocking plate (511) and is used to drive the two blocking plates (511) to move in the same direction, so that the bottoms of the two preheating boxes (504) can discharge materials alternately and continuously, thereby extending the drying time of the sludge in the preheating box (504).

2. The sludge drying device according to claim 1, characterized in that: The power member includes: a screw (510) passing through the two blocking plates (511) and being threadedly connected to the two blocking plates (511); A limiting rod (509) is symmetrically provided on the two blocking plates (511) with respect to the screw rod (510) to limit the movement of the blocking plates (511); The second motor (502) is connected to the screw (510) via a coupling and is used to drive the screw (510) to rotate.

3. The sludge drying device according to claim 1, characterized in that: The drying mechanism comprises: A drying box (71) is provided on one side of the conveyor belt (6) and is used to dry the mud blocks that are discharged from the preheating box (504) and expose the internal undried portion. A second discharge port (77) is provided at the bottom of the drying box (71); A first inclined plate (74) and a second inclined plate (75) are respectively arranged on the left and right sides of the drying box (71) and are staggered in height. The mud blocks slide down from the first inclined plate (74) and the second inclined plate (75) to the second discharge port (77) to extend the sliding path of the mud blocks in the drying box (71).

4. The sludge drying device according to claim 3, characterized in that: One end of the first inclined plate (74) and the second inclined plate (75) close to the inner wall of the drying box (71) is provided with a connecting rod (73) and is rotatably connected to the drying box (71) through the connecting rod (73); Torsion springs (76) are sleeved on both ends of the connecting rod (73), one end of the torsion spring (76) is connected to the connecting rod (73), and the other end is connected to the inner wall of the drying box (71), and is used to restore the first inclined plate (74) and the second inclined plate (75) to their original positions after they rotate downward.

5. The sludge drying device according to claim 3, characterized in that: The heating mechanism comprises: A filter box (3) is provided on one side of the dewatering box (22) and is used to filter the sludge water flowing out of the dewatering box (22); A heating box (4) is connected to the filter box (3) and is used to heat the sludge water filtered from the filter box (3). The heating box (4) is provided with a connecting pipe (31) connected to the filter box (3), and the connecting pipe (31) is provided with a water pump (32); A hot water pipe (45), one end of which is connected to the preheating box (504) and the other end of which is connected to the heating box (4), transports the heated water in the preheating box (504) to the heating box (4); The heating component transmits the heat heated in the heating box (4) to the preheating box (504) and the drying box (71).

6. The sludge drying device according to claim 5, characterized in that: The heating component comprises: An air outlet main pipe (41), wherein a fan (42) is provided on the air outlet main pipe (41); The first outlet branch pipe (43) and the second outlet branch pipe (44) are both in communication with the outlet main pipe (41) and are used to transport the hot air in the outlet main pipe (41); a first air-spraying plate (505) provided on the outer wall of the preheating box (504) for spraying the hot air transported by the first air outlet branch pipe (43) onto the preheating box (504); The second air spray plate (72) is provided on the outer wall of the drying box (71) and sprays the hot air transported by the second air outlet branch pipe (44) onto the drying box (71).

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