Sludge drying device utilizing waste heat of waste incineration

Abstract

The invention relates to the technical field of sludge drying, in particular to a sludge drying device utilizing waste incineration waste heat, which comprises a feeding box, a pelletizing mechanism and a drying box, a material pushing plate is arranged in the feeding box, a valve plate which can only rotate towards the bottom of the material pushing plate is arranged on the material pushing plate, and the valve plate is connected with the material pushing plate through a torsional spring; the material pushing plate is in close fit with the inner wall of the feeding box, and a linear driving assembly used for controlling the material pushing plate to ascend and descend is arranged on the feeding box; a granulation plate is arranged on the feeding box, and a through hole for sludge to pass through is formed in the granulation plate; and the pelletizing mechanism is used for cutting off the sludge passing through the through holes, and the cut-off sludge falls into the drying box to be dried. According to the sludge continuous granulation device, the function of continuously granulating sludge is achieved, when the material pushing plate moves upwards, the valve plate rotates towards the lower portion of the material pushing plate under the action of extrusion force, and the sludge above enters the lower portion of the material pushing plate through the valve plate to be supplemented. The problem that the waste heat utilization rate is reduced due to the fact that an existing drying device cannot achieve continuous sludge treatment is solved.

Description

Technical Field

[0001] The invention relates to the technical field of sludge drying, and in particular to a sludge drying device utilizing waste heat from garbage incineration. Background Art

[0002] During the sewage treatment process, a large amount of sludge will be separated. In order to facilitate the subsequent treatment of the sludge, it needs to be dried. The waste incineration process will generate a lot of heat. Using the waste heat generated during the incineration process to dry the sludge can effectively utilize the waste heat and achieve energy-saving and environmental protection effects. However, during the sludge drying process, some clumped sludge cannot guarantee the uniformity of drying. After the outer layer is dried, the inner layer will still have a lot of moisture.

[0003] To this end, a Chinese patent with authorization announcement number CN118145868B discloses a waste incineration waste heat sludge drying device, which uses a scraping granulation mechanism to pre-treat the sludge before drying, so that the sludge is granular, ensuring that the size and shape of the sludge are more consistent, so that the heating of each part of the sludge during the drying process is more uniform, thereby avoiding the situation where some parts are over-dried while other parts still contain too much water, improving the quality of drying, and the sludge remaining on the hole wall of the through-hole plate can be pushed off, so that the sludge attached to the hole wall of the through-hole falls into the drying box again, which can prevent the sludge from clogging the through-hole plate, ensuring the subsequent use effect of the through-hole plate, and the uncut sludge squeezed into a flat block by the extrusion block can be scraped off from the top of the through-hole plate and collected, and re-added to the injection cylinder, and mixed with the subsequently added sludge, and then continued to be cut into segments and granulated, thereby realizing multiple extrusion and cutting work, improving the granulation efficiency of the sludge, and also improving the utilization efficiency of resources.

[0004] The existing sludge drying device pelletizes the sludge by extrusion and cutting. However, in the sewage treatment process, the amount of sludge is large. Every time the sludge injected into the cylinder is processed or the through-hole disk is cleaned, the sludge processing needs to be stopped, which is not only time-consuming and labor-intensive, but also in the process of garbage incineration, waste heat will continue to be generated, and when the sludge processing is stopped, part of the waste heat will be wasted. Summary of the invention

[0005] In view of the above problems, a sludge drying device utilizing waste incineration waste heat is provided. Through a feed box, a push plate, a linear drive assembly, a granulation plate, a granulation mechanism and a drying box, the problem that the existing drying device cannot achieve continuous treatment of sludge and reduces the utilization rate of waste heat is solved.

[0006] In order to solve the problems of the prior art, the present invention provides a sludge drying device that utilizes the waste heat of garbage incineration, comprising a feed box, a pelletizing mechanism and a drying box; a push plate is provided in the feed box, and a valve plate that can only rotate toward the bottom of the push plate is provided on the push plate, and the valve plate is connected to the push plate through a torsion spring; the push plate is tightly matched with the inner wall of the feed box, and a linear drive component for controlling the lifting and lowering of the push plate is provided on the feed box; a granulating plate is provided on the feed box, and a through hole is opened on the granulating plate for sludge to pass through; the pelletizing mechanism is used to cut off the sludge passing through the through hole, and the cut sludge falls into the drying box for drying.

[0007] Preferably, the drying box is provided with a processing box for pre-drying the sludge, and the processing box is located between the feed box and the drying box, and the pelletizing mechanism is arranged in the processing box.

[0008] Preferably, the pelletizing mechanism includes a rotating shaft, a mounting disk and a cutting knife; two rotating shafts are provided, and the rotating shafts are rotatably arranged on the drying box, each rotating shaft is sleeved with a mounting disk, and a fixed shaft is eccentrically arranged on the mounting disk; the cutting knife is in the shape of an elongated strip, and the two ends of the cutting knife are respectively hinged to the two fixed shafts; a driving mechanism for driving the rotating shaft to rotate is provided on the drying box.

[0009] Preferably, the driving mechanism includes a one-way transmission component; the two ends of the one-way transmission component are respectively connected to the linear drive component and the rotating shaft; the drying box is provided with a clearing component for clearing the through holes of the granulation plate; when the linear drive component drives the push plate to move downward, the linear drive component drives the rotating shaft to rotate through the one-way transmission component.

[0010] Preferably, the dredging assembly includes a first linear drive and a first push plate; the first linear drive is arranged on the drying box, The first push plate is transmission-connected with the driving end of the first linear drive, and a dredging rod for plugging and matching with the through hole of the granulation plate is arranged on the first push plate.

[0011] Preferably, a connecting rod is sleeved on the rotating shaft; and a reset component for controlling the reset of the connecting rod is provided on the drying box.

[0012] Preferably, each rotating shaft is sleeved with a connecting rod, and the angle between the two connecting rods is an acute angle.

[0013] Preferably, the reset assembly includes a second linear drive and a second push plate; the second linear drive is arranged on the drying box, and the driving end of the second linear drive is transmission-connected to the second push plate.

[0014] Preferably, the one-way transmission assembly includes a first transmission shaft, a second transmission shaft and a mounting ring; the first transmission shaft and the second transmission shaft are respectively rotatably arranged on the drying box; a ratchet gear is sleeved on the first transmission shaft, and the first transmission shaft is transmission connected to the linear drive assembly; the mounting ring is sleeved on the second transmission shaft, and a stopping pawl meshing with the ratchet gear is provided on the mounting ring, and the second transmission shaft is transmission connected to the rotating shaft.

[0015] Preferably, the linear drive assembly includes a rotary driver, a screw and a connecting frame; the rotary driver is arranged on the feed box, the screw is rotatably arranged on the feed box, and the driving end of the rotary driver is transmission-connected to the screw; the connecting frame is connected to the push plate, and the screw is threadedly connected to the connecting frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the function of continuous granulation of sludge through a feed box, a push plate, a linear drive component, a granulation plate, a granulation mechanism and a drying box. When the linear drive component drives the push plate to move downward, and the valve plate cannot rotate upward, the push plate squeezes the sludge in the feed box, and the sludge is squeezed out from the through hole on the granulation plate. The granulation mechanism cuts off the part of the sludge squeezed out from the through hole to form granular sludge, and the cut sludge falls into the drying box for drying. When the linear drive component drives the push plate to move upward, the sludge exerts an extrusion force in the direction of the valve plate. Under the action of the extrusion force, the valve plate rotates toward the bottom of the push plate, and the sludge above the push plate enters the bottom of the push plate through the valve plate to replenish the sludge. In this process, the operator can directly pour the sludge into the feed box without controlling the reset of the push plate, thereby achieving the effect of continuous granulation.

[0017] 2. The treatment box of the present invention realizes the function of drying the sludge. After the pelletizing mechanism pelletizes the sludge, the granular sludge falls into the treatment box, where the sludge is preliminarily treated, so that the surface of the granular sludge is dried quickly, and the sludge is prevented from adhering to each other and agglomerating again after falling into the drying box, thereby ensuring the uniformity of sludge drying. Through the cooperation of the treatment box and the drying box, during the sludge drying process, the sludge undergoes two drying stages: falling pre-drying and box main drying, which significantly improves the drying uniformity of the sludge and improves the thermal utilization rate of waste heat.

[0018] 3. The present invention realizes the function of cutting off the sludge squeezed out from the through hole through the rotating shaft, the cutting knife and the driving mechanism, so as to achieve the effect of cutting the squeezed sludge into particles, and the angle of the cutting knife can be controlled by cooperating with the fixed shafts on the two mounting disks, and the effect of intermittent cutting action according to the specified period is achieved through the rotation of the mounting disk, and the purpose of continuous granulation and drying is achieved by cooperating with the intermittent pushing of the pushing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a three-dimensional schematic diagram of a sludge drying device utilizing waste heat from garbage incineration according to the present invention.

[0020] Figure 2 It is a three-dimensional schematic diagram of the coordination of a feed box and a treatment box in a sludge drying device utilizing waste heat from garbage incineration according to the present invention.

[0021] Figure 3 It is a three-dimensional schematic diagram of the internal structure of a feed box in a sludge drying device that utilizes waste heat from garbage incineration according to the present invention.

[0022] Figure 4 It is a three-dimensional schematic diagram of a feed box, a pelletizing mechanism and a driving mechanism in a sludge drying device utilizing waste heat from garbage incineration according to the present invention.

[0023] Figure 5 It is a three-dimensional schematic diagram of a pelletizing mechanism in a sludge drying device utilizing waste heat from garbage incineration according to the present invention.

[0024] Figure 6 It is a three-dimensional schematic diagram of the cooperation between a pelletizing mechanism and a dredging component in a sludge drying device utilizing waste heat from garbage incineration according to the present invention.

[0025] Figure 7 It is a three-dimensional schematic diagram of the cooperation between a pelletizing mechanism and a reset assembly in a sludge drying device utilizing waste heat from garbage incineration according to the present invention.

[0026] Figure 8 It is a three-dimensional schematic diagram of the coordination of a feed box, a pelletizing mechanism and a driving mechanism in a sludge drying device utilizing waste heat from garbage incineration according to the present invention.

[0027] Fig. 9 It is a three-dimensional schematic diagram of a driving mechanism in a sludge drying device utilizing waste heat from garbage incineration according to the present invention.

[0028] Fig.10 The present invention Fig. 9 A local enlarged schematic diagram of point A in the middle.

[0029] The numbers in the figure are: 1, feed box; 11, push plate; 111, valve plate; 12, linear drive assembly; 121, rotary drive; 122, screw; 123, connecting frame; 124, guide rod; 13, granulation plate; 14, dredging assembly; 141, first linear drive; 142, first push plate; 1421, dredging rod; 2, pelletizing mechanism; 21, rotating shaft; 211, connecting rod; 212, mounting plate; 2121, fixed plate Fixed axis; 22, cutting knife; 23, reset assembly; 231, second linear drive; 232, second push plate; 3, drying box; 31, processing box; 311, cover plate; 4, driving mechanism; 41, one-way transmission assembly; 411, first transmission shaft; 4111, ratchet gear; 4112, pulley; 412, second transmission shaft; 4121, bevel gear; 414, mounting ring; 4141, stop pawl; 415, transmission belt. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Reference Figure 1-Figure 4 A sludge drying device utilizing waste heat from garbage incineration comprises a feed box 1, a pelletizing mechanism 2 and a drying box 3; a push plate 11 is provided in the feed box 1, a valve plate 111 which can only rotate toward the bottom of the push plate 11 is provided on the push plate 11, and the valve plate 111 is connected to the push plate 11 through a torsion spring; the push plate 11 is tightly matched with the inner wall of the feed box 1, and a linear drive assembly 12 for controlling the lifting and lowering of the push plate 11 is provided on the feed box 1; a granulating plate 13 is provided on the feed box 1, and a through hole is provided on the granulating plate 13 for the sludge to pass through; the pelletizing mechanism 2 is used to cut off the sludge passing through the through hole, and the cut sludge falls into the drying box 3 for drying.

[0032] The present invention realizes the function of continuous granulation of sludge through the feed box 1, the push plate 11, the linear drive component 12, the granulation plate 13, the granulation mechanism 2 and the drying box 3. When the linear drive component 12 drives the push plate 11 to move downward, and the valve plate 111 cannot rotate upward, the push plate 11 squeezes the sludge in the feed box 1, and the sludge is squeezed out from the through hole on the granulation plate 13. The granulation mechanism 2 cuts off the part of the sludge squeezed out from the through hole to form granular sludge, and the cut sludge falls into the drying box 3 for drying. When the linear drive component 12 drives the push plate 11 to move upward, the sludge applies an extrusion force in the direction to the valve plate 111, and the valve plate 111 rotates toward the bottom of the push plate 11 under the extrusion force, and the sludge above the push plate 11 enters the bottom of the push plate 11 through the valve plate 111 to replenish the sludge. In this process, the operator can directly pour the sludge into the feed box 1 without controlling the push plate 11 to reset, thereby achieving the effect of continuous granulation. The drying box 3 is provided with a controller for human-machine interaction, and the linear drive assembly 12 is electrically connected to the controller. The linear drive assembly 12 is used to control the lifting and lowering of the push plate 11 in the vertical direction. When the push plate 11 is not subjected to other external forces, it is in a reset state under the elastic force of the torsion spring, and at this time, the valve plate 111 cooperates with the push plate 11 to separate the upper and lower parts of the push plate 11.

[0033] In the working state, the operator drives the push plate 11 to move back and forth in the vertical direction through the linear drive component 12. When the push plate 11 moves down, the rotation of the valve plate 111 is limited and in a reset state. At this time, the push plate 11 applies pressure to the sludge, and the sludge is squeezed out from the through hole of the granulation plate 13 under the extrusion action. Then the sludge is cut by the pelletizing mechanism 2 to obtain granular sludge. The granular sludge falls into the drying box 3 under the action of gravity and is dried using the waste heat generated by the incineration of garbage. When the linear drive component 12 drives the push plate 11 to move upward, the valve plate 111 is subjected to the reaction force generated by the sludge, the torsion spring is deformed under this force, and the valve plate 111 rotates toward the bottom of the push plate 11, thereby generating a channel for the sludge to pass through. During the upward movement of the push plate 11, the sludge above the push plate 11 passes through the push plate 11 from the channel and enters the space below the push plate 11. A working cycle is formed, and the push plate 11 does not need to be formed for too long, thereby shortening the time consumption of automatic feeding and reducing waste heat waste. When feeding sludge during the sludge treatment process, there is no need to stop the movement of the push plate 11, so as to achieve the effect of continuous granulation and sludge drying.

[0034] Reference Figure 1 and Figure 2 The drying box 3 is provided with a processing box 31 for pre-drying the sludge, and the processing box 31 is located between the feed box 1 and the drying box 3, and the pelletizing mechanism 2 is arranged in the processing box 31.

[0035] The present invention realizes the function of drying sludge through the processing box 31. After the pelletizing mechanism 2 pelletizes the sludge, the granular sludge falls into the processing box 31. The sludge is preliminarily treated in the processing box 31, so that the surface of the granular sludge is dried quickly, and the sludge is prevented from adhering to each other and agglomerating again after falling into the drying box 3, thereby ensuring the uniformity of sludge drying. The drying box 3 is provided with a fan, which is not shown in the figure. The airflow generated by the fan brings heat into the processing box 31, and the pelletized sludge falls in the processing box 31. During the falling process, the hot air flow causes the water on the surface of the particles to evaporate quickly, forming a hardened layer on the surface of the particles, reducing the adhesion of the sludge, thereby preventing the granular sludge from agglomerating again after falling. Through the cooperation of the processing box 31 and the drying box 3, during the drying process of the sludge, the sludge undergoes two drying stages: falling pre-drying and box main drying, which significantly improves the drying uniformity of the sludge and improves the thermal utilization rate of the waste heat.

[0036] Reference Figure 2 , Figure 4 and Figure 5 The pelletizing mechanism 2 comprises a rotating shaft 21, a mounting disk 212 and a cutting knife 22; two rotating shafts 21 are provided, and the rotating shafts 21 are rotatably arranged on the drying box 3, each rotating shaft 21 is sleeved with a mounting disk 212, and a fixed shaft 2121 is eccentrically arranged on the mounting disk 212; the cutting knife 22 is in the shape of an elongated strip, and the two ends of the cutting knife 22 are respectively hinged to the two fixed shafts 2121; the drying box 3 is provided with a driving mechanism 4 for driving the rotating shaft 21 to rotate.

[0037] The present invention realizes the function of cutting off the sludge extruded from the through hole through the rotating shaft 21, the cutting knife 22 and the driving mechanism 4, so as to achieve the effect of cutting the extruded sludge into granules, and the angle of the cutting knife 22 can be controlled by cooperating with the fixed shafts 2121 on the two mounting plates 212, and the effect of intermittent cutting action according to the specified cycle is achieved through the rotation of the mounting plate 212, and the purpose of continuous granulation and drying is achieved by cooperating with the intermittent pushing of the pushing plate 11. The two rotating shafts 21 are respectively located on both sides of the granulation plate 13, and the heights of the two rotating shafts 21 along the vertical direction are flush, so that the cutting knife 22 is always in a horizontal state. The rotating shaft 21 is rotatably arranged in the processing box 31 on the drying box 3. In the working state, when the linear drive assembly 12 drives the pushing plate 11 to move downward for extrusion, the driving mechanism 4 drives one of the rotating shafts 21 to rotate, and the rotating shaft 21 drives the mounting plate 212 to rotate, and the mounting plate 212 pulls the cutting knife 22 through the fixed shaft 2121, and pulls the mounting plate 212 on the other side to rotate through the cutting knife 22. During the rotation, the cutting blade 22 reciprocates from the upper and lower sides of the granulation plate 13 to cut and granulate the sludge, thereby cooperating with the drying box 3 to perform uniform drying.

[0038] Reference Figure 2 and Figure 4 : The driving mechanism 4 includes a one-way transmission component 41; both ends of the one-way transmission component 41 are respectively connected to the linear drive component 12 and the rotating shaft 21; the drying box 3 is provided with a dredging component 14 for dredging the through holes of the granulation plate 13; when the linear drive component 12 drives the push plate 11 to move downward, the linear drive component 12 drives the rotating shaft 21 to rotate through the one-way transmission component 41.

[0039] The present invention realizes the function of automatically starting the pelletizing work when the linear drive component 12 drives the push plate 11 to move downward through the one-way transmission component 41. When the linear drive component 12 drives the push plate 11 to move downward, the linear drive component 12 drives the rotating shaft 21 to rotate through the one-way transmission component 41 to perform the pelletizing work, and when the linear drive component 12 drives the push plate 11 to move upward, the one-way transmission component 41 no longer transmits torque, and the pelletizing mechanism 2 stops the pelletizing action. At this time, the dredging component 14 dredges the through holes on the granulation plate 13, thereby achieving automatic dredging work during the drying process. And dredging is performed during the reset process of the push plate 11, further improving work efficiency.

[0040] Reference Figure 4 and Figure 6 : The dredging assembly 14 includes a first linear drive 141 and a first push plate 142; the first linear drive 141 is arranged on the drying box 3; The first push plate 142 is drivingly connected to the driving end of the first linear driver 141 , and a dredging rod 1421 for plugging and cooperating with the through hole of the granulating plate 13 is provided on the first push plate 142 .

[0041] The present invention realizes the function of clearing the through hole on the granulation plate 13 through the first linear drive 141, the first push plate 142 and the clearing rod 1421. The clearing assembly 14 is arranged in the processing box 31. The first linear drive 141 is preferably a linear cylinder, and the first linear drive 141 is electrically connected to the controller. During long-term operation, part of the sludge may adhere to the through hole of the granulation plate 13, and become dry under the action of the hot air flow in the drying box 3, thereby making it impossible to enter the drying box 3 with the extrusion action. After the through hole of the granulation plate 13 is blocked, the passing rate of the sludge will be affected. Not only does it increase the resistance to the downward movement of the push plate 11, but it also seriously affects the sludge processing efficiency. For this reason, the first linear drive 141 and the first push plate 142 are arranged in the processing box 31 to clear the through hole of the granulation plate 13. When the linear drive component 12 controls the push plate 11 to move upward, the controller sends a signal to the first linear driver 141. After receiving the signal, the first linear driver 141 drives the first push plate 142 to move toward the granulation plate 13. After the dredging rod 1421 on the first push plate 142 is docked with the through hole on the granulation plate 13, the sludge adhered to the through hole is pushed back into the feed box 1 through the extrusion action, and then mixed with the sludge in the feed box 1, and moisture is reabsorbed to ensure that it can smoothly enter the drying box 3 for drying when squeezed.

[0042] Reference Figure 4 : A connecting rod 211 is sleeved on the rotating shaft 21; a reset component 23 for controlling the connecting rod 211 to reset is provided on the drying box 3.

[0043] The present invention realizes the function of controlling the reset of the cutting knife 22 through the connecting rod 211 and the reset assembly 23, and avoids the problem that the dredging assembly 14 collides with the cutting knife 22 during the dredging process and causes damage to the parts. In the process of the linear drive assembly 12 controlling the push plate 11 to move upward, the dredging assembly 14 dredges the through hole of the granulation plate 13. In the dredging process, if the cutting knife 22 is not at the uppermost or lowermost end, the cutting knife 22 will block the through hole on the granulation plate 13, resulting in a collision between the dredging rod 1421 on the first push plate 142 and the cutting knife 22. For this reason, the connecting rod 211 and the reset assembly 23 are provided to control the reset of the cutting knife 22. In the process of the linear drive assembly 12 controlling the push plate 11 to move upward, the rotating shaft 21 will not be driven to rotate by the setting of the one-way transmission assembly 41. At this time, the connecting rod 211 on the rotating shaft 21 is driven to reset by the reset assembly 23, and then the rotating shaft 21 and the mounting plate 212 are driven to reset by the connecting rod 211. In order to ensure that the reset assembly 23 can smoothly push the connecting rod 211 on the rotating shaft 21 to reset, when the linear drive assembly 12 controls the rotating shaft 21 to rotate through the one-way transmission assembly 41, the rotation margin of the rotating shaft 21 is controlled. When the linear drive assembly 12 controls the push plate 11 to move downward, the rotating shaft 21 is driven to rotate in the forward direction, but the rotating shaft 21 is not driven to the reset state. The reset assembly 23 pushes the connecting rod 211 to continue to rotate, and the connecting rod 211 drives the rotating shaft 21 to continue to rotate forward, and then drives the mounting plate 212 to rotate through the rotating shaft 21, and the mounting plate 212 drives the cutting knife 22 to reset.

[0044] Reference Figure 4 and Figure 7 : Each rotating shaft 21 is sleeved with a connecting rod 211, and the angle between the two connecting rods 211 is an acute angle.

[0045] The present invention avoids the problem that the reset assembly 23 cannot push the connecting rod 211 to rotate when the connecting rod 211 is in a horizontal state by setting two connecting rods 211. The reset assembly 23 is provided with two groups, and the two groups of reset assemblies 23 are respectively used to push the connecting rods 211 on both sides to rotate. When the connecting rod 211 is in a horizontal state, the direction in which the connecting rod 211 is subjected to the thrust is colinear with the extension of the connecting rod 211, and the reset assembly 23 cannot push the connecting rod 211 to rotate. At this time, the connecting rod 211 on the other side will be in an inclined state, and the reset assembly 23 pushes the connecting rod 211 in an inclined state, thereby pushing the connecting rod 211 to rotate a certain angle, destroying the balanced state of the connecting rod 211 in a horizontal state, and then stably pushing the connecting rod 211 to reset. In order to avoid conflicts between the reset assemblies 23 on both sides when pushing the connecting rod 211, the reset assembly 23 used to push the connecting rod 211 in an inclined state only pushes the connecting rod 211 to rotate a certain angle, and does not push the connecting rod 211 to reset.

[0046] Reference Figure 4 and Figure 7: The reset assembly 23 includes a second linear drive 231 and a second push plate 232; the second linear drive 231 is arranged on the drying box 3, and the driving end of the second linear drive 231 is transmission-connected to the second push plate 232.

[0047] The present invention realizes the function of resetting the driving connecting rod 211 through the second linear driver 231 and the second push plate 232. The second linear driver 231 is preferably a linear cylinder, and the second linear driver 231 is electrically connected to the controller. The second linear driver 231 is installed on the processing box 31, and the second push plate 232 is provided with a distance sensor for sensing the extension state of the push plate. In the working state, when the linear drive assembly 12 drives the push plate 11 to move upward, the second linear driver 231 drives the second push plate 232 to extend, and the connecting rod 211 is driven to reset through the second push plate 232. When the connecting rod 211 completes the reset, the distance sensor on the second push plate 232 senses that the distance between the second push plate 232 and the second linear driver 231 reaches a specified value, and feedbacks the signal to the controller. The controller sends a signal to the first linear driver 141, and the first linear driver 141 drives the first push plate 142 to extend to perform the through-hole dredging work.

[0048] Reference Figure 2 , Figure 3 and Figure 8 : The one-way transmission assembly 41 includes a first transmission shaft 411, a second transmission shaft 412 and a mounting ring 414; the first transmission shaft 411 and the second transmission shaft 412 are respectively rotatably arranged on the drying box 3; a ratchet gear 4111 is sleeved on the first transmission shaft 411, and the first transmission shaft 411 is transmission connected to the linear drive assembly 12; the mounting ring 414 is sleeved on the second transmission shaft 412, and a stopping pawl 4141 meshingly connected to the ratchet gear 4111 is provided on the mounting ring 414, and the second transmission shaft 412 is transmission connected to the rotating shaft 21.

[0049] The present invention realizes the function of transmitting the torque of the linear drive assembly 12 to the rotating shaft 21 through the first transmission shaft 411, the second transmission shaft 412, and the mounting ring 414. A cover plate 311 is provided at the top of the processing box 31, and the first transmission shaft 411 and the second transmission shaft 412 are both rotatably arranged on the cover plate 311, and the mounting ring 414 is rotatably connected to the processing box 31. Bevel gears 4121 are sleeved on the second transmission shaft 412 and the rotating shaft 21, and the two bevel gears 4121 are meshed and connected. When the linear drive assembly 12 is started, the first transmission shaft 411 is driven to rotate, and the first transmission shaft 411 drives the ratchet gear 4111 to rotate. When the ratchet gear 4111 rotates forward, it drives the stop pawl 4141 meshed with it to rotate, and then drives the mounting ring 414 to rotate through the stop pawl 4141, and the mounting ring 414 drives the second transmission shaft 412 to rotate. The second transmission shaft 412 drives the rotating shaft 21 to rotate through the bevel gear 4121, and the rotating shaft 21 drives the mounting plate 212 to rotate, and then pulls the cutting knife 22 to perform the cutting action. When the linear drive assembly 12 drives the push plate 11 to move upward, it drives the first transmission shaft 411 to rotate in the opposite direction, and the first transmission shaft 411 drives the ratchet gear 4111 to rotate in the opposite direction, and the ratchet gear 4111 will not drive the stop pawl 4141 to rotate.

[0050] Reference Figure 4 , Fig. 9 and Fig.10 : The linear drive assembly 12 includes a rotary driver 121, a screw 122 and a connecting frame 123; the rotary driver 121 is arranged on the feed box 1, the screw 122 is rotatably arranged on the feed box 1, and the driving end of the rotary driver 121 is transmission-connected to the screw 122; the connecting frame 123 is connected to the push plate 11, and the screw 122 is threadedly connected to the connecting frame 123.

[0051] The present invention realizes the function of driving the push plate 11 to rise and fall through the rotary driver 121, the screw 122 and the connecting frame 123. The rotary driver 121 is preferably a servo motor, and the rotary driver 121 is electrically connected to the controller. A guide rod 124 is provided on the feed box 1, and the guide rod 124 is slidably matched with the connecting frame 123. A pulley 4112 is sleeved on the first transmission shaft 411 and the screw 122, and a transmission belt 415 is sleeved on the pulley 4112, and the two pulleys 4112 are connected by the transmission belt 415. The driving end of the rotary driver 121 is connected to the screw 122 through a synchronous belt. In the working state, the controller sends a signal to the rotary driver 121, and the rotary driver 121 drives the screw 122 to rotate after receiving the signal, and the screw 122 drives the connecting frame 123 threadedly connected thereto to move, and the connecting frame 123 drives the push plate 11 to move, and the sludge is pushed through the push plate 11. At the same time, when the screw rod 122 rotates, the first transmission shaft 411 is driven to rotate through the pulley 4112 and the transmission belt 415, and then the rotating shaft 21 is driven to rotate through the one-way transmission component 41 to perform the cutting action.

[0052] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A sludge drying device utilizing waste heat from garbage incineration, comprising a feed box (1), a pelletizing mechanism (2) and a drying box (3); It is characterized in that A push plate (11) is provided in the feed box (1), and a valve plate (111) is provided on the push plate (11) and can only rotate toward the bottom of the push plate (11), and the valve plate (111) is connected to the push plate (11) via a torsion spring; The push plate (11) is tightly matched with the inner wall of the feed box (1), and a linear drive component (12) for controlling the lifting and lowering of the push plate (11) is provided on the feed box (1); A granulation plate (13) is provided on the feed box (1), and a through hole is provided on the granulation plate (13) for sludge to pass through; The pelletizing mechanism (2) is used to cut off the sludge passing through the through hole, and the cut sludge falls into the drying box (3) for drying.

2. The sludge drying device using waste heat from garbage incineration according to claim 1 is characterized in that: The drying box (3) is provided with a processing box (31) for pre-drying sludge, and the processing box (31) is located between the feed box (1) and the drying box (3), and the pelletizing mechanism (2) is arranged in the processing box (31).

3. A sludge drying device using waste heat from garbage incineration according to claim 1 or 2, characterized in that: The pelletizing mechanism (2) comprises a rotating shaft (21), a mounting plate (212) and a cutting knife (22); Two rotating shafts (21) are provided, and the rotating shafts (21) are rotatably arranged on the drying box (3), and each rotating shaft (21) is sleeved with a mounting plate (212), and a fixed shaft (2121) is eccentrically arranged on the mounting plate (212); The cutting knife (22) is in the shape of a long strip, and two ends of the cutting knife (22) are respectively hinged to two fixed shafts (2121); The drying box (3) is provided with a driving mechanism (4) for driving the rotating shaft (21) to rotate.

4. The sludge drying device using waste heat from garbage incineration according to claim 3 is characterized in that: The driving mechanism (4) comprises a one-way transmission assembly (41); The two ends of the one-way transmission component (41) are respectively connected to the linear drive component (12) and the rotating shaft (21); The drying box (3) is provided with a dredging component (14) for dredging the through holes of the granulation plate (13); When the linear drive component (12) drives the push plate (11) to move downward, the linear drive component (12) drives the rotating shaft (21) to rotate via the one-way transmission component (41).

5. The sludge drying device using waste heat from garbage incineration according to claim 4 is characterized in that: The dredging assembly (14) comprises a first linear drive (141) and a first push plate (142); The first linear drive (141) is arranged on the drying box (3); The first push plate (142) is drivingly connected to the driving end of the first linear driver (141), and the first push plate (142) is provided with a dredging rod (1421) for plugging and cooperating with the through hole of the granulating plate (13).

6. The sludge drying device using waste heat from garbage incineration according to claim 4 is characterized in that: A connecting rod (211) is sleeved on the rotating shaft (21); The drying box (3) is provided with a reset assembly (23) for controlling the connection rod (211) to reset.

7. The sludge drying device using waste heat from garbage incineration according to claim 6 is characterized in that: A connecting rod (211) is sleeved on each rotating shaft (21), and the angle between the two connecting rods (211) is an acute angle.

8. The sludge drying device using waste heat from garbage incineration according to claim 6 is characterized in that: The reset assembly (23) comprises a second linear drive (231) and a second push plate (232); The second linear drive (231) is arranged on the drying box (3), and a driving end of the second linear drive (231) is transmission-connected to the second push plate (232).

9. The sludge drying device using waste heat from garbage incineration according to claim 4 is characterized in that: The one-way transmission assembly (41) comprises a first transmission shaft (411), a second transmission shaft (412) and a mounting ring (414); The first transmission shaft (411) and the second transmission shaft (412) are both rotatably disposed on the drying box (3); A ratchet gear (4111) is sleeved on the first transmission shaft (411), and the first transmission shaft (411) is transmission-connected to the linear drive assembly (12); The mounting ring (414) is sleeved on the second transmission shaft (412); a stop pawl (4141) meshingly connected with the ratchet gear (4111) is provided on the mounting ring (414); and the second transmission shaft (412) is transmission-connected to the rotating shaft (21).

10. The sludge drying device using waste heat from garbage incineration according to claim 1, characterized in that: The linear drive assembly (12) comprises a rotary drive (121), a screw rod (122) and a connecting frame (123); The rotary driver (121) is disposed on the feed box (1), the screw rod (122) is rotatably disposed on the feed box (1), and the driving end of the rotary driver (121) is drivingly connected to the screw rod (122); The connecting frame (123) is connected to the push plate (11), and the screw rod (122) is threadedly connected to the connecting frame (123).

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