Sludge heat pump drying system with waste heat recovery function

Abstract

The sludge heat pump drying system comprises a drying box, a feeding port is formed in the top of the outer wall of one side of the drying box, a discharging port is formed in the bottom of the outer wall of the face, away from the feeding port, of the drying box, a separating mechanism is arranged in the drying box, and a drying mechanism is arranged at the bottom of the drying box. A waste heat recovery mechanism is arranged at the top of the drying box; the sludge heat pump drying system with the waste heat recovery function comprises a drying box and a separation mechanism, the separation mechanism comprises a conveying belt located at the bottom in the drying box, the conveying belt is fixedly connected with the drying box, the rotating direction of the conveying belt is clockwise, and an exhaust pipe is arranged outside one side of the drying box. Through rotation of a gear, a rotating rod can drive a crushing nail plate to rotate, and along with rotation of the crushing nail plate, condensed and caked sludge on a conveying belt can be crushed, so that the sludge can conveniently fall off through a discharging plate, and the sludge separation effect can be facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of sludge heat pump drying, in particular to a sludge heat pump drying system with waste heat recovery. Background Art

[0002] Sludge seriously damages the image of the city and affects the social environment. It is a public nuisance. At the same time, sludge contains rich nitrogen and phosphorus organic matter, and is a high-quality raw material for producing garden and greening fertilizers. It can be used as one of the important contents of urban resource utilization. However, the resource utilization of sludge is seriously hindered by the influence of drying costs. The use of heat pump dehumidification dryer to dehydrate sludge and dry it to form an effective method for making granular fertilizer has the characteristics of low operating costs, small footprint, strong drying capacity, environmental protection, etc., and can be continuously produced to achieve industrialization. A heat pump is a device that transfers heat energy from a low-level heat source to a high-level heat source, and it is also a new energy technology that has attracted much attention worldwide. A heat pump is a device that can obtain low-level heat energy from natural air, water or soil, and provide high-level heat energy that can be used by people through electrical energy. Therefore, a sludge heat pump drying system with waste heat recovery is needed.

[0003] At present, a Chinese patent with announcement number CN220317608U discloses a sludge heat pump drying device, which relates to the technical field of drying devices. In order to solve the problem that the existing drying device directly discharges hot air, which will cause part of the heat energy inside the hot air to be wasted, the utility model includes a device shell, a fixing frame is provided at the upper end of the device shell, an evaporator is provided at the upper end of the fixing frame, a first connecting pipe is provided at the front end of the evaporator, a condenser is provided at the lower end of the first connecting pipe, a second connecting pipe is provided at the lower end of the condenser, a lifting pump is provided at the lower end of the second connecting pipe, a four-way head is provided at the rear end of the lifting pump, the four-way head is connected to the lifting pump through an air pipe, an air inlet pipe is provided at the rear end of the four-way head, and a third connecting pipe is provided on both sides of the four-way head. The utility model uses the evaporator and the condenser to cooperate to allow the hot and humid air to be recycled, thereby greatly reducing the use cost of the entire drying device.

[0004] However, when the above device is in use, the contact area between the sludge and the hot air is increased by the diverter strips to improve the drying efficiency. However, as the sludge coagulates during the transportation process, the sludge has a high viscosity and it is difficult to separate the sludge from the transmission belt.

[0005] To this end, the present invention provides a sludge heat pump drying system with waste heat recovery. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a sludge heat pump drying system with waste heat recovery to solve the above problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sludge heat pump drying system with waste heat recovery, comprising a drying box, a feed inlet is provided at the top of one side outer wall of the drying box, a discharge port is provided at the bottom of the outer wall of the drying box away from the feed inlet, a separation mechanism is provided in the drying box, a drying mechanism is provided at the bottom of the drying box, and a waste heat recovery mechanism is provided at the top of the drying box;

[0008] The separation mechanism includes a conveyor belt located at the bottom of the drying box, the conveyor belt is fixedly connected to the drying box and the rotation direction of the conveyor belt is clockwise, an exhaust pipe is arranged on the outside of one side of the drying box, and a transmission shaft is rotatably connected to an outer wall of one side of the drying box through a bearing, one end of the transmission shaft is fixedly connected to a plurality of evenly distributed rotating blades, and the rotating blades face the exhaust end of the exhaust pipe, one end of the transmission shaft located in the drying box is fixedly connected to a worm, and an inner wall of one side of the drying box is fixedly connected to a mounting plate, and the bottom of the mounting plate is rotatably connected to a plurality of rotating shafts through bearings, a gear is fixedly connected to the surface of the rotating shaft, and the gear is meshed with the worm, a rotating rod is fixedly connected to the bottom of the rotating shaft, and a crushing nail plate is fixedly connected to the bottom of the rotating rod, and the rotation track diameter of the crushing nail plate is greater than the width of the conveyor belt.

[0009] As a preferred technical solution of the present invention, a baffle plate is fixedly connected to the top of the fixed frame of the conveyor belt, and a heat transfer port that penetrates the fixed frame of the conveyor belt is opened on the top of the baffle plate. An inclined unloading plate is arranged at the bottom of the outer wall of one side of the drying box, and the unloading plate is located below the conveyor belt.

[0010] As a preferred technical solution of the present invention, both ends of the outer wall of one side of the drying box are fixedly connected with fixed plates, one side of the unloading plate is fixedly connected with a shaking shaft, the shaking shaft and the fixed plate are rotatably connected through a bearing, one side of the fixed plate is fixedly connected with a torsion spring surrounding the shaking shaft, and the torsion spring is fixedly connected to the unloading plate.

[0011] As a preferred technical solution of the present invention, a fixing rod is fixedly connected to the outer wall of one side of the drying box, and a collision frame is fixedly connected to one side of the fixing rod. The collision frame contacts the bottom of the blanking plate, and the contact surface between the collision frame and the blanking plate is an arc-shaped structure.

[0012] As a preferred technical solution of the present invention, the drying mechanism includes a first conveyor belt and a second conveyor belt distributed in sequence from top to bottom, the first conveyor belt and the second conveyor belt have opposite rotation directions, the first conveyor belt and the second conveyor belt are both fixedly connected to a drying box, the first conveyor belt located at the top extends outside the feed port, a hot air blower body is fixedly connected to the bottom of the drying box, and the heat exhaust end of the hot air blower body faces into the drying box.

[0013] As a preferred technical solution of the present invention, the bottom of the fixed frames of the first conveyor belt and the second conveyor belt are fixedly connected to a support plate, one side of the support plate is rotatably connected to a cleaning shaft through a bearing, one side of the cleaning shaft is fixedly connected to a cleaning rod, one side of the cleaning rod is fixedly connected to a cleaning plate, and the top of the cleaning plate is in contact with the surface of the first conveyor belt and the second conveyor belt respectively.

[0014] As a preferred technical solution of the present invention, both ends of the cleaning shaft away from the cleaning plate are fixedly connected with force rods, one side of the force rod is rotatably connected with a tension roller through a bearing, the tension roller is located inside the belt, and the bottom of the fixed frames of the first conveyor belt and the second conveyor belt are fixedly connected with an electric hydraulic rod, and the piston rod of the electric hydraulic rod is in contact with the force rod.

[0015] As a preferred technical solution of the present invention, the waste heat recovery mechanism includes a pump fixedly connected to the top outer wall of the drying box, a cavity is opened in the top plate of the drying box, a plurality of heat extraction ports extending into the cavity are opened on the top inner wall of the drying box, an air extraction port extending into the cavity is opened on the top outer wall of the drying box, the heat extraction end of the pump is connected to the inner wall of the air extraction port, a heat exchange box filled with water is fixedly connected to the outer wall of the drying box, a heat exchange pipe is fixedly connected inside the heat exchange box, and the heat exchange pipe is connected to the heat exhaust end of the pump.

[0016] As a preferred technical solution of the present invention, a processing box is arranged outside one side of the drying box, and the inner wall of one side of the processing box is fixedly connected to the inner wall of one side of the heat exchange box through an air pipe. The inner wall of the processing box is fixedly connected to a filter screen plate, and an exhaust port is opened at the bottom of the filter screen plate, and the exhaust port is fixedly connected to the exhaust pipe.

[0017] As a preferred technical solution of the present invention, a water inlet is provided on the top outer wall of the heat exchanger box, a water outlet is provided on the bottom outer wall of the heat exchanger box, a circulating pump covering the water inlet is fixedly connected to the top outer wall of the heat exchanger box, a plurality of heating pipes are arranged at the bottom of the blanking plate, the drainage end of the circulating pump is connected to the water inlet, the water pumping end of the circulating pump and one side of the heating pipe and the inner wall of the water outlet and one side of the heating pipe are fixedly connected to the water supply pipe.

[0018] Beneficial Effects

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The sludge heat pump drying system with waste heat recovery can apply force to the rotating blades through the airflow discharged through the exhaust pipe, and the rotating blades can cooperate with the transmission shaft to rotate. The rotation of the transmission shaft can cause the worm to rotate, and the rotation of the worm can apply force to the gear to cause the gear to rotate. The rotation of the gear can cause the rotating rod to drive the crushing nail plate to rotate. With the rotation of the crushing nail plate, the coagulated and agglomerated sludge on the conveyor belt can be crushed, which can facilitate the sludge to fall through the unloading plate, thereby facilitating the sludge separation effect.

[0021] (2) The sludge heat pump drying system with waste heat recovery is operated by rotating the feed plate in coordination with the shaking shaft. At this time, the torsion spring is deformed. As the feed plate rotates in coordination with the weight of different sludges, the feed plate can be reciprocated by the elastic force of the torsion spring and the reaction force of the collision frame, so that the sludge on the feed plate can be more dispersed and the agglomerated sludge can be prevented from stagnating on the surface of the feed plate.

[0022] (3) The sludge heat pump drying system with waste heat recovery can dry the sludge through the hot air blower body. The sludge is placed on the first conveyor belt for conveying. As the first conveyor belt conveys the sludge, the sludge can fall to the surface of the second conveyor belt. After being cleaned by the cleaning plate, the sludge can fall fully. After the sludge falls on the conveyor belt, it undergoes multiple drying operations of the first conveyor belt and the second conveyor belt, and the sludge on the conveyor belt can be fully dried.

[0023] (4) The sludge heat pump drying system with waste heat recovery can apply force to the force-bearing rod through the electric hydraulic rod, so that the tension roller can move downward. The tension roller can apply force to the inside of the first conveyor belt and the second conveyor belt, so that the transmission belts of the first conveyor belt and the second conveyor belt can be tightened, the tension of the first conveyor belt and the second conveyor belt can be adjusted, and the cleaning plate can be ensured to remove the sludge on the surface of the first conveyor belt and the second conveyor belt, so as to avoid the sludge residue on the first conveyor belt and the second conveyor belt.

[0024] (5) The sludge heat pump drying system with waste heat recovery can start the pump when the airflow is discharged into the treatment box. The filtering operation of the filter plate can reduce the flying of dust and avoid environmental pollution. At this time, the circulation pump can be started to circulate the water in the heat exchange box through the heat exchange box,,, and the heat exchange box. The heating pipe located under the unloading plate can heat the air near the unloading plate, which can further improve the drying effect of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 is a schematic diagram of the rotating blade structure of the present invention;

[0027] Figure 3 is a schematic diagram of the first conveyor belt structure of the present invention;

[0028] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 5 It is a schematic diagram of the structure of the shift plate of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the torsion spring of the present invention;

[0031] Figure 7 It is a schematic diagram of the stress-bearing rod structure of the present invention;

[0032] Figure 8 It is a schematic diagram of the cleaning plate structure of the present invention;

[0033] Fig. 9 It is a schematic diagram of the cavity structure of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the filter screen plate of the present invention;

[0035] Fig.11 It is a schematic diagram of the heating tube structure of the present invention.

[0036] In the figure, 1, drying box; 2, feeding port; 3, discharging port; 4, conveyor belt; 5, exhaust pipe; 6, transmission shaft; 7, rotating blade; 8, worm; 9, mounting plate; 10, rotating shaft; 11, gear; 12, rotating rod; 13, crushing nail plate; 14, shift plate; 15, heat transfer port; 16, unloading plate; 17, fixing plate; 18, shaking shaft; 19, torsion spring; 20, fixing rod; 21, collision frame; 22, first conveyor belt; 23, second conveyor belt; 24. Hot air blower body; 25. Support plate; 26. Cleaning shaft; 27. Cleaning rod; 28. Cleaning plate; 29. ​​Force rod; 30. Tension roller; 31. Electric hydraulic rod; 32. Pump; 33. Cavity; 34. Heat extraction port; 35. Air extraction port; 36. Heat exchange box; 37. Heat exchange tube; 38. Treatment box; 39. Filter plate; 40. Exhaust port; 41. Water inlet; 42. Water outlet; 43. Circulation pump; 44. Heating tube; 45. Water pipe. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-11 A sludge heat pump drying system with waste heat recovery includes a drying box 1, a feed inlet 2 is provided at the top of one side outer wall of the drying box 1, a discharge port 3 is provided at the bottom of the outer wall of the drying box 1 away from the feed inlet 2, a separation mechanism is provided in the drying box 1, a drying mechanism is provided at the bottom of the drying box 1, and a waste heat recovery mechanism is provided at the top of the drying box 1;

[0039] The separation mechanism includes a conveyor belt 4 located at the bottom of the drying box 1, the conveyor belt 4 is fixedly connected to the drying box 1 and the rotation direction of the conveyor belt 4 is clockwise, an exhaust pipe 5 is arranged on the outside of one side of the drying box 1, and a transmission shaft 6 is rotatably connected to the outer wall of one side of the drying box 1 through a bearing, one end of the transmission shaft 6 is fixedly connected to a plurality of evenly distributed rotating blades 7, and the rotating blades 7 face the exhaust end of the exhaust pipe 5, one end of the transmission shaft 6 located in the drying box 1 is fixedly connected to a worm 8, a mounting plate 9 is fixedly connected to the inner wall of one side of the drying box 1, and a plurality of rotating shafts 10 are rotatably connected to the bottom of the mounting plate 9 through bearings, a gear 11 is fixedly connected to the surface of the rotating shaft 10, and the gear 11 is meshed with the worm 8, a rotating rod 12 is fixedly connected to the bottom of the rotating shaft 10, and a crushing nail plate 13 is fixedly connected to the bottom of the rotating rod 12, and a rotating track diameter of the crushing nail plate 13 is greater than the width of the conveyor belt 4.

[0040] Specifically, the airflow discharged through the exhaust pipe 5 can exert force on the rotating blade 7, and the rotating blade 7 can cooperate with the transmission shaft 6 to rotate. The rotation of the transmission shaft 6 can cause the worm 8 to rotate, and the rotation of the worm 8 can exert force on the gear 11, so that the gear 11 can rotate. The rotation of the gear 11 can cause the rotating rod 12 to drive the crushing nail plate 13 to rotate. With the rotation of the crushing nail plate 13, the coagulated and agglomerated sludge on the conveyor belt 4 can be crushed, which can facilitate the sludge to fall through the unloading plate 16, thereby facilitating the sludge separation effect.

[0041] As a further improvement of the present invention, a baffle plate 14 is fixedly connected to the top of the fixed frame of the conveyor belt 4, and a heat transfer port 15 is opened on the top of the baffle plate 14 and passes through the fixed frame of the conveyor belt 4. An inclined unloading plate 16 is arranged at the bottom of the outer wall of one side of the drying box 1, and the unloading plate 16 is located below the conveyor belt 4.

[0042] Specifically, the sludge can be transported by the provided unloading plate 16, which can facilitate the sludge to fall through the shoe surface of the unloading plate 16, and the staff can prepare containers for collection operations.

[0043] As a further improvement of the present invention, a fixed plate 17 is fixedly connected to both ends of the outer wall of one side of the drying box 1, a shaking shaft 18 is fixedly connected to one side of the blanking plate 16, the shaking shaft 18 and the fixed plate 17 are rotatably connected through a bearing, a torsion spring 19 surrounding the shaking shaft 18 is fixedly connected to one side of the fixed plate 17, the torsion spring 19 is fixedly connected to the blanking plate 16, a fixed rod 20 is fixedly connected to the outer wall of one side of the drying box 1, a collision frame 21 is fixedly connected to one side of the fixed rod 20, the collision frame 21 is in contact with the bottom of the blanking plate 16, and the contact surface between the collision frame 21 and the blanking plate 16 is an arc-shaped structure.

[0044] Specifically, the blanking plate 16 is arranged to rotate in coordination with the shaking shaft 18, at which time the torsion spring 19 is deformed. As the blanking plate 16 rotates in coordination with the different weights of the sludge, under the elastic force of the torsion spring 19 and the reaction force of the collision frame 21, the blanking plate 16 can present a reciprocating rotation state, which can make the sludge on the blanking plate 16 more dispersed and prevent the agglomerated sludge from stagnating on the surface of the blanking plate 16.

[0045] As a further improvement of the present invention, the drying mechanism includes a first conveyor belt 22 and a second conveyor belt 23 distributed in sequence from top to bottom. The rotation directions of the first conveyor belt 22 and the second conveyor belt 23 are opposite. The first conveyor belt 22 and the second conveyor belt 23 are both fixedly connected to the drying box 1. The first conveyor belt 22 located at the top is located and extends outside the feed port 2. A hot air blower body 24 is fixedly connected to the bottom of the drying box 1, and the heat exhaust end of the hot air blower body 24 faces the inside of the drying box 1.

[0046] Specifically, the hot air blower body 24 is provided to dry the sludge, and the sludge is placed on the first conveyor belt 22 for conveying. As the first conveyor belt 22 conveys the sludge, the sludge can fall onto the surface of the second conveyor belt 23. After being cleaned by the cleaning plate 28, the sludge can fall fully. After the sludge falls onto the conveyor belt 4, it undergoes drying operations of multiple first conveyor belts 22 and second conveyor belts 23, and the sludge on the conveyor belt 4 can be fully dried.

[0047] As a further improvement of the present invention, the bottom of the fixed frames of the first conveyor belt 22 and the second conveyor belt 23 are fixedly connected to a support plate 25, one side of the support plate 25 is rotatably connected to a cleaning shaft 26 through a bearing, one side of the cleaning shaft 26 is fixedly connected to a cleaning rod 27, one side of the cleaning rod 27 is fixedly connected to a cleaning plate 28, and the top of the cleaning plate 28 is in contact with the surface of the first conveyor belt 22 and the second conveyor belt 23 respectively.

[0048] Specifically, the cleaning rod 27 can be rotated by rotating the cleaning shaft 26, and the rotation of the cleaning rod 27 can rotate the cleaning plate 28, thereby ensuring that the cleaning plate 28 can scrape away the sludge on the surface of the first conveyor belt 22 and the second conveyor belt 23, thereby avoiding the generation of sludge residue on the first conveyor belt 22 and the second conveyor belt 23.

[0049] As a further improvement of the present invention, both ends of the cleaning shaft 26 away from the cleaning plate 28 are fixedly connected with force rods 29, one side of the force rod 29 is rotatably connected with a tension roller 30 through a bearing, the tension roller 30 is located inside the belt, and the bottom of the fixed frame of the first conveyor belt 22 and the second conveyor belt 23 are fixedly connected with an electric hydraulic rod 31, and the piston rod of the electric hydraulic rod 31 is in contact with the force rod 29.

[0050] Specifically, the electric hydraulic rod 31 can apply force to the force-bearing rod 29, so that the tension roller 30 can move downward. The tension roller 30 can apply force to the inside of the first conveyor belt 22 and the second conveyor belt 23, so that the transmission belts of the first conveyor belt 22 and the second conveyor belt 23 can be tightened, the tensioning force of the first conveyor belt 22 and the second conveyor belt 23 can be adjusted, and the cleaning plate 28 can be guaranteed to remove the sludge on the surface of the first conveyor belt 22 and the second conveyor belt 23, thereby avoiding the residue of sludge on the first conveyor belt 22 and the second conveyor belt 23.

[0051] As a further improvement of the present invention, the waste heat recovery mechanism includes a pump 32 fixedly connected to the top outer wall of the drying box 1, a cavity 33 is opened in the top plate of the drying box 1, a plurality of heat extraction ports 34 extending into the cavity 33 are opened on the top inner wall of the drying box 1, an air extraction port 35 extending into the cavity 33 is opened on the top outer wall of the drying box 1, the heat extraction end of the pump 32 is connected to the inner wall of the air extraction port 35, a heat exchange box 36 filled with water is fixedly connected to the outer wall of the drying box 1, a heat exchange pipe 37 is fixedly connected in the heat exchange box 36, and the heat exchange pipe 37 is connected to the heat exhaust end of the pump 32.

[0052] Specifically, by starting the pump 32, heat can be pumped into the heat exchange box 36. When transported through the heat exchange pipe 37, the water in the heat exchange box 36 can be heated. As the water temperature in the heat exchange box 36 increases, waste heat recovery can be performed.

[0053] As a further improvement of the present invention, a treatment box 38 is arranged outside one side of the drying box 1, and the inner wall of one side of the treatment box 38 is fixedly connected to the inner wall of one side of the heat exchange box 36 through an air pipe, and the inner wall of the treatment box 38 is fixedly connected to a filter screen plate 39, and an exhaust port 40 is opened at the bottom of the filter screen plate 39, and the exhaust port 40 is fixedly connected to the exhaust pipe 5, and a water inlet 41 is opened on the top outer wall of the heat exchange box 36, and a water outlet 42 is opened on the bottom outer wall of the heat exchange box 36. A circulating pump 43 covering the water inlet 41 is fixedly connected to the top outer wall of the heat exchange box 36, and a plurality of heating pipes 44 are arranged at the bottom of the blanking plate 16, and the drainage end of the circulating pump 43 is connected to the water inlet 41, and the water pumping end of the circulating pump 43 and one side of the heating pipe 44 and the inner wall of the water outlet 42 and one side of the heating pipe 44 are fixedly connected to the water supply pipe 45.

[0054] Specifically, by starting the pump 32, when the airflow is discharged into the treatment box 38, the filtering operation through the filter screen 39 can reduce the flying of dust and avoid polluting the environment. At this time, the circulation pump 43 can be started to circulate the water in the heat exchange box 36 through the heat exchange box 36, the water pipe 45, the heating pipe 44, the water pipe 45 and the heat exchange box 36. The heating pipe 44 located under the unloading plate 16 can heat the air near the unloading plate 16, which can further improve the drying effect of the sludge.

[0055] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0056] Working principle of the present invention: When in use, the sludge can be dried by the hot air blower body 24, and the sludge is placed on the first conveyor belt 22 for conveying. With the conveying of the first conveyor belt 22, the sludge can fall to the surface of the second conveyor belt 23, and the sludge can be fully dropped after being cleaned by the cleaning plate 28. After the sludge falls on the conveyor belt 4, it passes through multiple drying operations of the first conveyor belt 22 and the second conveyor belt 23, and the sludge on the conveyor belt 4 can be fully dried. The pump 32 is started to pump the heat in the drying box 1 to the heat exchange pipe 37 of the heat exchange box 36, and the heat exchanger 36 is heated. The sludge is transported to the treatment box 38 through the pipe 37 and finally discharged through the exhaust pipe 5. The airflow discharged through the exhaust pipe 5 can exert force on the rotating blade 7, and the rotating blade 7 can cooperate with the transmission shaft 6 to rotate. The rotation of the transmission shaft 6 can make the worm 8 rotate, and the rotation of the worm 8 can exert force on the gear 11, so that the gear 11 can rotate. The rotation of the gear 11 can make the rotating rod 12 drive the crushing nail plate 13 to rotate. With the rotation of the crushing nail plate 13, the coagulated sludge on the conveyor belt 4 can be crushed, which can facilitate the sludge to fall through the unloading plate 16, thereby facilitating the sludge separation effect;

[0057] When the sludge falls through the unloading plate 16, the sludge may first impact the unloading plate 16. At this time, the unloading plate 16 may be rotated in cooperation with the shaking shaft 18. At this time, the torsion spring 19 is deformed. As the unloading plate 16 rotates, it may collide with the collision frame 21. In accordance with the different weights of the sludge, the unloading plate 16 may be reciprocated by the elastic force of the torsion spring 19 and the reaction force of the collision frame 21, so that the sludge on the unloading plate 16 may be more dispersed, so as to facilitate the collection of the sludge and prevent the agglomerated sludge from stagnating on the surface of the unloading plate 16.

[0058] When the drying operation is performed, when the sludge is transported on the first conveyor belt 22 and the second conveyor belt 23, as the transport time increases, the conveyor belts of the first conveyor belt 22 and the second conveyor belt 23 will become loose, and starting the electric hydraulic rod 31 can apply force to the force rod 29, so that the tension roller 30 can move downward, and the tension roller 30 can apply force to the inside of the first conveyor belt 22 and the second conveyor belt 23, so that the conveyor belts of the first conveyor belt 22 and the second conveyor belt 23 can be tightened, and the tension of the first conveyor belt 22 and the second conveyor belt 23 can be adjusted. The force rod 29 cooperates with the rotation operation of the cleaning shaft 26 to rotate the cleaning rod 27, and the rotation of the cleaning rod 27 can rotate the cleaning plate 28, which can ensure that the cleaning plate 28 can shovel the sludge on the surface of the first conveyor belt 22 and the second conveyor belt 23, and avoid the sludge residue on the first conveyor belt 22 and the second conveyor belt 23;

[0059] When performing waste heat recovery operation, the pump 32 can be started to pump heat into the heat exchange box 36. When transported through the heat exchange pipe 37, the water in the heat exchange box 36 can be heated. When the airflow is discharged into the treatment box 38, the filtering operation through the filter plate 39 can reduce the flying of dust and avoid environmental pollution. As the water temperature in the heat exchange box 36 increases, the circulation pump 43 can be started to circulate the water in the heat exchange box 36 through the heat exchange box 36, the water pipe 45, the heating pipe 44, the water pipe 45 and the heat exchange box 36. The heating pipe 44 located below the unloading plate 16 can heat the air near the unloading plate 16, which can further improve the drying effect of the sludge.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sludge heat pump drying system with waste heat recovery, comprising a drying box (1), a feed inlet (2) is provided at the top of one side of the outer wall of the drying box (1), and a discharge port (3) is provided at the bottom of one side of the outer wall of the drying box (1) away from the feed inlet (2), characterized in that: A separation mechanism is provided in the drying box (1), a drying mechanism is provided at the bottom of the drying box (1), and a waste heat recovery mechanism is provided at the top of the drying box (1); The separation mechanism comprises a conveyor belt (4) located at the bottom of the drying box (1), the conveyor belt (4) is fixedly connected to the drying box (1) and the conveyor belt (4) rotates in a clockwise direction, an exhaust pipe (5) is arranged on the outside of one side of the drying box (1), a transmission shaft (6) is rotatably connected to the outer wall of one side of the drying box (1) via a bearing, one end of the transmission shaft (6) is fixedly connected to a plurality of evenly distributed rotating blades (7), the rotating blades (7) face the exhaust end of the exhaust pipe (5), and one end of the transmission shaft (6) located in the drying box (1) is fixedly connected to the exhaust end of the exhaust pipe (5). A worm (8) is fixedly connected to the inner wall of one side of the drying box (1); a mounting plate (9) is fixedly connected to the bottom of the mounting plate (9) through bearings to rotate with a plurality of rotating shafts (10); a gear (11) is fixedly connected to the surface of the rotating shaft (10); the gear (11) is meshed with the worm (8); a rotating rod (12) is fixedly connected to the bottom of the rotating shaft (10); a crushing nail plate (13) is fixedly connected to the bottom of the rotating rod (12); and a rotating track diameter of the crushing nail plate (13) is greater than the width of the conveyor belt (4).

2. A sludge heat pump drying system with waste heat recovery according to claim 1, characterized in that: The top of the fixed frame of the conveyor belt (4) is fixedly connected with a baffle plate (14), and the top of the baffle plate (14) is provided with a heat transfer port (15) that passes through the fixed frame of the conveyor belt (4). The bottom of the outer wall of one side of the drying box (1) is provided with an inclined discharge plate (16), and the discharge plate (16) is located below the conveyor belt (4).

3. A sludge heat pump drying system with waste heat recovery according to claim 2, characterized in that: A fixing plate (17) is fixedly connected to both ends of the outer wall of one side of the drying box (1); a shaking shaft (18) is fixedly connected to one side of the blanking plate (16); the shaking shaft (18) and the fixing plate (17) are rotatably connected via a bearing; a torsion spring (19) surrounding the shaking shaft (18) is fixedly connected to one side of the fixing plate (17); and the torsion spring (19) is fixedly connected to the blanking plate (16).

4. The sludge heat pump drying system with waste heat recovery according to claim 3 is characterized in that: A fixing rod (20) is fixedly connected to an outer wall of one side of the drying box (1), and a collision frame (21) is fixedly connected to one side of the fixing rod (20). The collision frame (21) contacts the bottom of the blanking plate (16), and the contact surface between the collision frame (21) and the blanking plate (16) is an arc-shaped structure.

5. The sludge heat pump drying system with waste heat recovery according to claim 1 is characterized in that: The drying mechanism comprises a first conveyor belt (22) and a second conveyor belt (23) which are sequentially arranged from top to bottom. The first conveyor belt (22) and the second conveyor belt (23) rotate in opposite directions. The first conveyor belt (22) and the second conveyor belt (23) are both fixedly connected to a drying box (1). The first conveyor belt (22) located at the top is extended to the outside of the feed port (2). A hot air blower body (24) is fixedly connected to the bottom of the drying box (1), and a heat exhaust end of the hot air blower body (24) faces the inside of the drying box (1).

6. The sludge heat pump drying system with waste heat recovery according to claim 5 is characterized in that: The bottom of the fixed frames of the first conveyor belt (22) and the second conveyor belt (23) are both fixedly connected with a support plate (25), one side of the support plate (25) is rotatably connected with a cleaning shaft (26) via a bearing, one side of the cleaning shaft (26) is fixedly connected with a cleaning rod (27), one side of the cleaning rod (27) is fixedly connected with a cleaning plate (28), and the top of the cleaning plate (28) is in contact with the surface of the first conveyor belt (22) and the second conveyor belt (23), respectively.

7. The sludge heat pump drying system with waste heat recovery according to claim 6 is characterized in that: Both ends of the cleaning shaft (26) away from the cleaning plate (28) are fixedly connected to a force-bearing rod (29), one side of the force-bearing rod (29) is rotatably connected to a tension roller (30) via a bearing, and the tension roller (30) is located inside the belt. The bottoms of the fixed frames of the first conveyor belt (22) and the second conveyor belt (23) are fixedly connected to an electric hydraulic rod (31), and the piston rod of the electric hydraulic rod (31) is in contact with the force-bearing rod (29).

8. The sludge heat pump drying system with waste heat recovery according to claim 2 is characterized in that: The waste heat recovery mechanism comprises a pump (32) fixedly connected to the top outer wall of the drying box (1); a cavity (33) is provided in the top plate of the drying box (1); a plurality of heat extraction ports (34) extending into the cavity (33) are provided on the top inner wall of the drying box (1); an air extraction port (35) extending into the cavity (33) is provided on the top outer wall of the drying box (1); a heat extraction end of the pump (32) is connected to the inner wall of the air extraction port (35); a heat exchange box (36) filled with water is fixedly connected to the outer wall of the drying box (1); a heat exchange pipe (37) is fixedly connected to the heat exchange box (36); and the heat exchange pipe (37) is connected to the heat exhaust end of the pump (32).

9. The sludge heat pump drying system with waste heat recovery according to claim 8, characterized in that: A treatment box (38) is arranged outside one side of the drying box (1); an inner wall of one side of the treatment box (38) is fixedly connected to an inner wall of one side of the heat exchange box (36) via an air pipe; a filter screen (39) is fixedly connected to the inner wall of the treatment box (38); an exhaust port (40) is provided at the bottom of the filter screen (39); and the exhaust port (40) is fixedly connected to an exhaust pipe (5).

10. A sludge heat pump drying system with waste heat recovery according to claim 9, characterized in that: The top outer wall of the heat exchange box (36) is provided with a water inlet (41), the bottom outer wall of the heat exchange box (36) is provided with a water outlet (42), the top outer wall of the heat exchange box (36) is fixedly connected with a circulation pump (43) covering the water inlet (41), a plurality of heating pipes (44) are arranged at the bottom of the blanking plate (16), the drainage end of the circulation pump (43) is connected with the water inlet (41), the water pumping end of the circulation pump (43) and one side of the heating pipe (44) and the inner wall of the water outlet (42) and one side of the heating pipe (44) are fixedly connected with a water supply pipe (45).

Images