A sludge drying device utilizing waste heat from garbage incineration

Abstract

The present invention relates to the technical field of sludge drying, and specifically relates to a sludge drying device utilizing waste incineration waste heat, which includes a feeding box, a granulation mechanism, and a drying box; a pushing plate is arranged in the feeding box, a valve plate that can only rotate towards the bottom of the pushing plate is arranged on the pushing plate, and the valve plate is connected to the pushing plate through a torsion spring; the pushing plate is closely fitted with the inner wall of the feeding box, and a linear driving component for controlling the lifting of the pushing plate is arranged on the feeding box; a granulation plate is arranged on the feeding box, and through holes for sludge to pass through are opened on the granulation plate; the granulation mechanism is used for cutting the sludge passing through the through holes, and the cut sludge falls into the drying box for drying. The present invention realizes the function of continuously granulating sludge. When the pushing plate moves upward, the valve plate rotates downward under the action of extrusion force, and the sludge above enters below the pushing plate through the valve plate for sludge replenishment. It solves the problem that the existing drying device cannot continuously process sludge, resulting in reduced utilization rate of waste heat.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge drying, and specifically relates to a sludge drying device that utilizes the waste heat of 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. And a large amount of heat is generated during the garbage incineration process. Utilizing the waste heat generated during the incineration process to dry the sludge can effectively utilize the waste heat and achieve the effects of energy conservation and environmental protection. However, during the sludge drying process, some agglomerated sludge cannot ensure uniform drying. After the outer layer is dried, there will still be more moisture in the inner layer.

[0003] For this reason, a Chinese patent with the authorization announcement number CN118145868B discloses a garbage incineration waste heat sludge drying device, which uses a scraping and granulating mechanism to pre-treat the sludge before drying the sludge, making the sludge all granular, ensuring that the size and shape of the sludge are more consistent, making the heat received by each part of the sludge more uniform during the drying process, and thus avoiding the situation where some parts are over-dried while some other parts still contain too much moisture, improving the drying quality. And, the sludge remaining on the hole wall of the through-hole disk can be pushed down, so that the sludge attached to the through-hole wall of the through-hole falls back into the drying box again, which can prevent the situation of sludge blocking the through-holes of the through-hole disk, ensuring the subsequent use effect of the through-hole disk. And, the uncut sludge that has been extruded into a flat block by the extrusion block can be scraped off and collected from above the through-hole disk, and then re-added to the injection cylinder and mixed with the subsequent added sludge, and then continue to be cut into particles, thereby realizing multiple extrusion and cutting operations, improving the granulation efficiency of the sludge, and also improving the resource utilization efficiency.

[0004] The existing sludge drying devices cut the sludge through extrusion and cutting. However, during the sewage treatment process, the amount of sludge is large. Each time the sludge in the injection cylinder is processed or the through-hole disk is cleaned, the treatment of the sludge needs to be stopped, which is not only time-consuming and laborious, but also during the garbage incineration process, waste heat is continuously generated. When the treatment of the sludge is stopped, it will cause waste of some waste heat. Summary of the Invention

[0005] Aiming at the above problems, a sludge drying device that utilizes the waste heat of garbage incineration is provided, which solves the problem that the existing drying device cannot continuously treat the sludge and reduces the waste heat utilization rate through a feeding box, a pushing plate, a linear driving assembly, a granulating plate, a cutting mechanism and a drying box.

[0006] To solve the problems of the existing technology, the present invention provides a sludge drying device that utilizes the waste heat of garbage incineration, including a feeding box, a granulating mechanism, and a drying box; a pushing plate is provided in the feeding box, a valve plate that can only rotate towards the bottom of the pushing plate is provided on the pushing plate, and the valve plate is connected to the pushing plate through a torsion spring; the pushing plate is in close fit with the inner wall of the feeding box, and a linear driving assembly for controlling the lifting of the pushing plate is provided on the feeding box; a granulating plate is provided on the feeding box, and through holes for sludge to pass through are formed on the granulating plate; the granulating mechanism is used to cut the sludge passing through the through holes, and the cut sludge falls into the drying box for drying.

[0007] Preferably, a treatment box for pre-drying the sludge is provided on the drying box, and the treatment box is located between the feeding box and the drying box, and the granulating mechanism is arranged in the treatment box.

[0008] Preferably, the granulating mechanism includes a rotating shaft, a mounting disk, and a cutting knife; there are two rotating shafts, and the rotating shafts are rotatably arranged on the drying box, a mounting disk is sleeved on each rotating shaft, and a fixed shaft is eccentrically arranged on the mounting disk; the cutting knife is strip-shaped, and both ends of the cutting knife are hinged to the two fixed shafts respectively; 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 assembly; both ends of the one-way transmission assembly are respectively in transmission connection with the linear driving assembly and the rotating shaft; a dredging assembly for dredging the through holes of the granulating plate is provided on the drying box; when the linear driving assembly drives the pushing plate to move downward, the linear driving assembly drives the rotating shaft to rotate through the one-way transmission assembly.

[0010] Preferably, the dredging assembly includes a first linear driver and a first pushing plate; the first linear driver is arranged on the drying box,

[0011] the first pushing plate is in transmission connection with the driving end of the first linear driver, and a dredging rod for plugging and matching with the through holes of the granulating plate is provided on the first pushing plate.

[0012] Preferably, a connecting rod is sleeved on the rotating shaft; a resetting assembly for controlling the resetting of the connecting rod is provided on the drying box.

[0013] Preferably, a connecting rod is sleeved on each rotating shaft, and the included angle between the two connecting rods is an acute angle.

[0014] Preferably, the resetting assembly includes a second linear driver and a second pushing plate; the second linear driver is arranged on the drying box, and the driving end of the second linear driver is in transmission connection with the second pushing plate.

[0015] 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 in transmission connection with the linear drive assembly; the mounting ring is sleeved on the second transmission shaft, a stop pawl meshed with the ratchet gear is arranged on the mounting ring, and the second transmission shaft is in transmission connection with the rotating shaft.

[0016] Preferably, the linear drive assembly includes a rotary driver, a screw rod and a connecting frame; the rotary driver is arranged on the feeding box, the screw rod is rotatably arranged on the feeding box, and the driving end of the rotary driver is in transmission connection with the screw rod; the connecting frame is connected with the pushing plate, and the screw rod is in threaded connection with the connecting frame.

[0017] The beneficial effects of the present invention compared with the prior art are as follows:

[0018] 1. The present invention realizes the function of continuously granulating sludge through the feeding box, the pushing plate, the linear drive assembly, the granulating plate, the granule cutting mechanism and the drying box. When the linear drive assembly drives the pushing plate to move downward, and the valve plate cannot rotate upward, the pushing plate extrudes the sludge in the feeding box, and the sludge is extruded from the through holes on the granulating plate. The granule cutting mechanism cuts off the part of the sludge extruded from the through holes to form granular sludge, and the cut sludge falls into the drying box for drying. When the linear drive assembly drives the pushing plate to move upward, the sludge exerts an extrusion force on the valve plate in the direction, and the valve plate rotates downward under the action of this extrusion force, and the sludge above the pushing plate enters below the pushing plate through the valve plate for sludge replenishment. During this process, the operator can directly pour the sludge into the feeding box without controlling the pushing plate to reset, thereby achieving the effect of continuous granulation.

[0019] 2. The treatment box of the present invention realizes the function of drying sludge. After the granule cutting mechanism cuts the sludge into granules, the granular sludge falls into the treatment box, and the sludge is preliminarily treated in the treatment box, so that the surface of the granular sludge is quickly dried, avoiding the sludge from adhering to each other and agglomerating again after falling into the drying box, and ensuring the drying uniformity of the sludge. Through the cooperation of the treatment box and the drying box, during the drying process of the sludge, the sludge undergoes two drying stages of falling pre-drying and main drying in the box body, significantly improving the drying uniformity of the sludge and the thermal utilization rate of the waste heat.

[0020] 3. The present invention realizes the function of cutting off the sludge extruded from the through holes through the rotating shaft, the cutting knife and the driving mechanism, achieving the effect of cutting the extruded sludge into granules, and the angle of the cutting knife can be controlled by the fixed shafts on the two mounting disks. By rotating the mounting disks, the intermittent cutting action can be achieved at a specified period, and the continuous granulation and drying purposes are achieved by cooperating with the intermittent feeding of the pushing plate. Description of the Drawings

[0021] Figure 1 It is a three-dimensional schematic diagram of a sludge drying device using waste incineration waste heat according to the present invention.

[0022] Figure 2 It is a three-dimensional schematic diagram of the cooperation between the feeding box and the treatment box in a sludge drying device using waste incineration waste heat according to the present invention.

[0023] Figure 3 It is a three-dimensional schematic diagram of the internal structure of the feeding box in a sludge drying device using waste incineration waste heat according to the present invention.

[0024] Figure 4 It is a three-dimensional schematic diagram of the feeding box, the granulation mechanism and the driving mechanism in a sludge drying device using waste incineration waste heat according to the present invention.

[0025] Figure 5 It is a three-dimensional schematic diagram of the granulation mechanism in a sludge drying device using waste incineration waste heat according to the present invention.

[0026] Figure 6 It is a three-dimensional schematic diagram of the cooperation between the granulation mechanism and the dredging component in a sludge drying device using waste incineration waste heat according to the present invention.

[0027] Figure 7 It is a three-dimensional schematic diagram of the cooperation between the granulation mechanism and the reset component in a sludge drying device using waste incineration waste heat according to the present invention.

[0028] Figure 8 It is a three-dimensional schematic diagram of the cooperation between the feeding box, the granulation mechanism and the driving mechanism in a sludge drying device using waste incineration waste heat according to the present invention.

[0029] Figure 9 It is a three-dimensional schematic diagram of the driving mechanism in a sludge drying device using waste incineration waste heat according to the present invention.

[0030] Figure 10 It is according to the present invention Figure 9 The partial enlarged schematic diagram at position A.

[0031] The reference numerals in the figure are: 1, feed box; 11, pushing plate; 111, valve plate; 12, linear drive assembly; 121, rotary drive; 122, screw; 123, connecting frame; 124, guide rod; 13, granulating plate; 14, dredging assembly; 141, first linear drive; 142, first pushing plate; 1421, dredging rod; 2, pelletizing mechanism; 21, rotating shaft; 211, connecting rod; 212, mounting disc; 2121, fixed shaft; 22, cutting knife; 23, reset assembly; 231, second linear drive; 232, second pushing plate; 3, drying box; 31, processing box; 311, cover plate; 4, drive mechanism; 41, one-way drive 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 implementation manners

[0032] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0033] Refer to Figures 1 - 4 : A sludge drying device using waste heat from garbage incineration, comprising a feed box 1, a pelletizing mechanism 2 and a drying box 3; a pushing plate 11 is provided in the feed box 1, and a valve plate 111 that can only rotate towards the bottom of the pushing plate 11 is provided on the pushing plate 11, and the valve plate 111 is connected to the pushing plate 11 through a torsion spring; the pushing plate 11 is in close fit with the inner wall of the feed box 1, and a linear drive assembly 12 for controlling the lifting of the pushing plate 11 is provided on the feed box 1; a granulating plate 13 is provided on the feed box 1, and through holes for sludge to pass through are opened on the granulating plate 13; the pelletizing mechanism 2 is used for cutting off the sludge passing through the through holes, and the cut sludge falls into the drying box 3 for drying.

[0034] The present invention realizes the function of continuously granulating sludge through a feeding box 1, a pushing plate 11, a linear driving component 12, a granulating plate 13, a granule cutting mechanism 2 and a drying box 3. When the linear driving component 12 drives the pushing plate 11 to move downward, and the valve plate 111 cannot rotate upward, the pushing plate 11 extrudes the sludge in the feeding box 1, and the sludge is extruded from the through holes on the granulating plate 13. The granule cutting mechanism 2 cuts the part of the sludge extruded from the through holes to form granular sludge, and the cut sludge drops into the drying box 3 for drying. When the linear driving component 12 drives the pushing plate 11 to move upward, the sludge exerts an extrusion force on the valve plate 111 in the direction. Under the action of this extrusion force, the valve plate 111 rotates downward below the pushing plate 11, and the sludge above the pushing plate 11 enters below the pushing plate 11 through the valve plate 111 for sludge replenishment. During this process, the operator can directly pour the sludge into the feeding box 1 without controlling the reset of the pushing plate 11, thereby achieving the effect of continuous granulation. A controller for human-computer interaction is provided on the drying box 3, and the linear driving component 12 is electrically connected to the controller. The linear driving component 12 is used to control the pushing plate 11 to lift and lower in the vertical direction. When the pushing plate 11 is not affected by 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 pushing plate 11 to separate the upper and lower parts of the pushing plate 11.

[0035] In the working state, the operator drives the pushing plate 11 to reciprocate in the vertical direction through the linear driving component 12. When the pushing plate 11 moves downward, the rotation of the valve plate 111 is restricted and it is in a reset state. At this time, the pushing plate 11 exerts pressure on the sludge, and the sludge is extruded from the through holes of the granulating plate 13 under the extrusion action. Then, the granule cutting mechanism 2 cuts the sludge to obtain granular sludge. The granular sludge drops into the drying box 3 under the action of gravity and is dried using the waste heat generated by garbage incineration. When the linear driving component 12 drives the pushing plate 11 to move upward, the valve plate 111 receives the reaction force generated by the sludge, and the torsion spring deforms under this force. The valve plate 111 rotates downward below the pushing plate 11, thereby generating a passage for the sludge to pass through. During the upward movement of the pushing plate 11, the sludge above the pushing plate 11 passes through the pushing plate 11 from this passage and enters the space below the pushing plate 11. A working cycle is formed, and the formation of the pushing plate 11 does not need to be too long, thereby shortening the time-consuming of automatic feeding and reducing waste heat waste. When replenishing the sludge during the treatment process of the sludge, there is no need to stop the movement of the pushing plate 11, achieving the effects of continuous granulation and sludge drying.

[0036] Refer to Figure 1 and Figure 2 : The drying box 3 is provided with a treatment box 31 for pre-drying the sludge, and the treatment box 31 is located between the feeding box 1 and the drying box 3. The granule cutting mechanism 2 is arranged in the treatment box 31.

[0037] The present invention realizes the function of drying sludge through the treatment box 31. After the granulation mechanism 2 granulates the sludge, the granular sludge drops into the treatment box 31, and the sludge is preliminarily treated in the treatment box 31, so that the surface of the granular sludge is quickly dried, avoiding the sludge from adhering to each other and agglomerating again after dropping into the drying box 3, and ensuring the uniformity of sludge drying. A blower is provided in the drying box 3, and the blower is not shown in the figure. The airflow generated by the blower brings heat into the treatment box 31. The granulated sludge falls in the treatment box 31. During the falling process, the moisture on the surface of the particles is quickly evaporated by the hot airflow, and a hardened layer is formed on the surface of the particles, reducing the adhesion force of the sludge, thereby preventing the granular sludge from agglomerating again after dropping. Through the cooperation of the treatment box 31 and the drying box 3, during the drying process of the sludge, the sludge undergoes two drying stages of falling pre-drying and main drying in the box body, significantly improving the drying uniformity of the sludge and the thermal utilization rate of waste heat.

[0038] Refer to Figure 2 , Figure 4 and Figure 5 : The granulation mechanism 2 includes a rotating shaft 21, a mounting plate 212 and a cutting knife 22; there are two rotating shafts 21, and the rotating shafts 21 are rotatably arranged on the drying box 3. A mounting plate 212 is sleeved on each rotating shaft 21, and a fixed shaft 2121 is eccentrically arranged on the mounting plate 212; the cutting knife 22 is strip-shaped, and both ends of the cutting knife 22 are hinged to the two fixed shafts 2121 respectively; a driving mechanism 4 for driving the rotation of the rotating shaft 21 is provided on the drying box 3.

[0039] 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, achieving the effect of cutting the extruded sludge into granular shape, and the fixed shafts 2121 on the two mounting plates 212 can control the angle of the cutting knife 22. By rotating the mounting plate 212, the intermittent cutting action can be achieved at a specified period, and the continuous granulation and drying purposes are achieved by cooperating with the intermittent feeding 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 in 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 treatment box 31 on the drying box 3. In the working state, when the linear driving component 12 drives the pushing plate 11 to move downward for extrusion, the driving mechanism 4 drives one of the rotating shafts 21 to rotate. The rotating shaft 21 drives the mounting plate 212 to rotate. The mounting plate 212 pulls the cutting knife 22 through the fixed shaft 2121, and drives the mounting plate 212 on the other side to rotate through the cutting knife 22. During the rotation process, the cutting knife 22 reciprocates from the upper and lower sides of the granulation plate 13 to cut and granulate the sludge, so as to cooperate with the drying box 3 for uniform drying work.

[0040] Refer to Figure 2 andFigure 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.

[0041] 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.

[0042] 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;

[0043] 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 .

[0044] The present invention realizes the function of dredging the through holes on the granulation plate 13 through the first linear driver 141, the first push plate 142 and the dredging rod 1421. The dredging assembly 14 is arranged in the processing box 31. The first linear driver 141 is preferably a linear cylinder, and the first linear driver 141 is electrically connected to the controller. During long-term operation, some sludge may adhere to the through holes of the granulation plate 13 and become dry under the action of the hot air flow in the drying box 3, thus preventing it from entering the drying box 3 under the extrusion action. After the through holes of the granulation plate 13 are blocked, the passing rate of the sludge will be affected. This not only increases the resistance to the downward movement of the pushing plate 11, but also seriously affects the sludge treatment efficiency. Therefore, the first linear driver 141 and the first push plate 142 are arranged in the processing box 31 to dredge the through holes of the granulation plate 13. During the process of the linear drive assembly 12 controlling the upward movement of the pushing plate 11, a signal is sent to the first linear driver 141 through the controller. After receiving the signal, the first linear driver 141 drives the first push plate 142 to move towards the granulation plate 13. After the dredging rod 1421 on the first push plate 142 is docked with the through holes on the granulation plate 13, the sludge adhering to the through holes is pushed back into the feed box 1 through the extrusion action, and then mixed with the sludge in the feed box 1 and re-absorbed with moisture to ensure that it can smoothly enter the drying box 3 for drying work when being extruded.

[0045] Refer to Figure 4 : A connecting rod 211 is sleeved on the rotating shaft 21; a reset assembly 23 for controlling the reset of the connecting rod 211 is provided on the drying box 3.

[0046] 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, avoiding the problem that the parts are damaged due to the collision between the dredging assembly 14 and the cutting knife 22 during the dredging process. During the process of the linear drive assembly 12 controlling the upward movement of the pushing plate 11, the through holes of the granulation plate 13 are dredged by the dredging assembly 14. During the dredging process, if the cutting knife 22 is not at the uppermost or lowermost end, the cutting knife 22 will block the through holes 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. Therefore, the connecting rod 211 and the reset assembly 23 are provided to control the reset of the cutting knife 22. During the process of the linear drive assembly 12 controlling the upward movement of the pushing plate 11, due to the setting of the one-way transmission assembly 41, the rotation of the rotating shaft 21 will not be driven. At this time, the reset assembly 23 drives the connecting rod 211 on the rotating shaft 21 to reset, and then drives the rotating shaft 21 and the mounting disc 212 to reset through 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 rotation of the rotating shaft 21 through the one-way transmission assembly 41, the rotation margin of the rotating shaft 21 is controlled. During the process of the linear drive assembly 12 controlling the downward movement of the pushing plate 11, the rotating shaft 21 is driven to rotate forward, but the rotating shaft 21 will not be driven to the reset state. Instead, the reset assembly 23 is used to push the connecting rod 211 to continue rotating, the connecting rod 211 drives the rotating shaft 21 to continue rotating forward, and then drives the mounting disc 212 to rotate through the rotating shaft 21, and the mounting disc 212 drives the cutting knife 22 to reset.

[0047] Refer to Figure 4 and Figure 7 : A connecting rod 211 is sleeved on each rotating shaft 21, and the included angle between the two connecting rods 211 is an acute angle.

[0048] 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. There are two groups of reset assemblies 23, 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 of the thrust received by the connecting rod 211 is collinear 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 is used to push the inclined connecting rod 211, and then push the connecting rod 211 to rotate a certain angle, destroying the balance state of the connecting rod 211 in the horizontal state, and then stably pushing the connecting rod 211 to reset. In order to avoid conflicts between the two sides of the reset assembly 23 when pushing the connecting rod 211, the reset assembly 23 for pushing the inclined connecting rod 211 only pushes the connecting rod 211 to rotate a certain angle, and will not push the connecting rod 211 to reset.

[0049] Refer to Figure 4 and Figure 7: The reset component 23 includes a second linear driver 231 and a second push plate 232; the second linear driver 231 is arranged on the drying box 3, and the driving end of the second linear driver 231 is in transmission connection with the second push plate 232.

[0050] The present invention realizes the function of resetting the driving link 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 a distance sensor for sensing the extended state of the push plate is arranged on the second push plate 232. In the working state, when the linear driving component 12 drives the pushing plate 11 to move upward, the second linear driver 231 drives the second push plate 232 to extend, and drives the link 211 to reset through the second push plate 232. After the link 211 is 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 feeds back a 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.

[0051] Refer to Figure 2 、 Figure 3 and Figure 8 : The one-way transmission component 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 in transmission connection with the linear driving component 12; the mounting ring 414 is sleeved on the second transmission shaft 412, and a stop pawl 4141 meshing with the ratchet gear 4111 is arranged on the mounting ring 414, and the second transmission shaft 412 is in transmission connection with the rotating shaft 21.

[0052] 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. 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 both 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, it drives the first transmission shaft 411 to rotate. 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. Then, the mounting ring 414 is driven to rotate through the stop pawl 4141. 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. The rotating shaft 21 drives the mounting disc 212 to rotate, and then pulls the cutting knife 22 to perform a 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 reverse direction. The first transmission shaft 411 drives the ratchet gear 4111 to rotate in the reverse direction, and the ratchet gear 4111 does not drive the stop pawl 4141 to rotate.

[0053] Refer to Figure 4 、 Figure 9 and Figure 10 : The linear drive assembly 12 includes a rotary drive 121, a screw 122, and a connecting frame 123. The rotary drive 121 is arranged on the feed box 1. The screw 122 is rotatably arranged on the feed box 1. The drive end of the rotary drive 121 is in transmission connection with the screw 122. The connecting frame 123 is connected to the push plate 11, and the screw 122 is in threaded connection with the connecting frame 123.

[0054] The present invention realizes the function of driving the push plate 11 to move up and down through the rotary drive 121, the screw 122, and the connecting frame 123. The rotary drive 121 is preferably a servo motor, and the rotary drive 121 is electrically connected to the controller. A guide rod 124 is provided on the feed box 1, and the guide rod 124 is in sliding fit with the connecting frame 123. A pulley 4112 is sleeved on both the first transmission shaft 411 and the screw 122. A transmission belt 415 is sleeved on the pulley 4112, and the two pulleys 4112 are connected by the transmission belt 415. The drive end of the rotary drive 121 is in transmission connection with the screw 122 through a synchronous belt. In the working state, the controller sends a signal to the rotary drive 121. After receiving the signal, the rotary drive 121 drives the screw 122 to rotate. The screw 122 drives the connecting frame 123 threaded thereto to move. The connecting frame 123 drives the push plate 11 to move, and the sludge is pushed by the push plate 11. At the same time, when the screw 122 rotates, it drives the first transmission shaft 411 to rotate through the pulley 4112 and the transmission belt 415, and then drives the rotating shaft 21 to rotate through the one-way transmission assembly 41 to perform a cutting action.

[0055] The above embodiments merely represent one or several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, 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 appended 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; 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; 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); 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 drive (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); The drying box (3) is provided with a reset assembly (23) for controlling the connecting rod (211) to reset; A connecting rod (211) is sleeved on each rotating shaft (21), and the angle between the two connecting rods (211) is an acute angle; 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 the driving end of the second linear drive (231) is transmission-connected to the second push plate (232).

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. The sludge drying device using waste heat from garbage incineration according to claim 1 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).

4. The sludge drying device using waste heat from garbage incineration according to claim 1 is 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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