A heat pump for utilizing waste heat from sludge drying

Abstract

This invention relates to the field of heat pumps, specifically a sludge drying waste heat utilization heat pump, comprising: a placement mechanism for placing and processing wet sludge; a discharge mechanism for discharging the dried sludge; a waste heat mechanism for introducing waste heat from an external boiler into the drying chamber; and a heat dissipation mechanism for dissipating excess heat from inside the drying chamber. The placement mechanism is mounted on the discharge mechanism, and the waste heat mechanism is fixedly installed on the discharge mechanism. In this sludge drying waste heat utilization heat pump, the two ends of a stretched filter are fixedly connected to the inner side of the inlet pipe and the outer side of the air plug, respectively. Therefore, the inward movement of the air plug causes the stretched filter to extend, thereby filtering impurities and dust from the boiler waste heat and preventing impurities from mixing with the sludge and affecting subsequent operations.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, specifically to a heat pump for utilizing waste heat from sludge drying. Background Technology

[0002] A heat pump is a highly efficient and energy-saving device that fully utilizes low-grade heat energy. Heat can spontaneously transfer from a high-temperature object to a low-temperature object, but not spontaneously in the opposite direction. The working principle of a heat pump is a mechanical device that forces heat to flow from a low-temperature object to a high-temperature object in a reverse circulation manner. It consumes only a small amount of net reverse circulation work to obtain a large amount of heat supply, effectively utilizing low-grade heat energy that is difficult to apply, thus achieving energy-saving goals.

[0003] The existing heat pumps for utilizing waste heat from sludge drying have the following problems: 1. Because the waste heat is introduced from external devices such as boilers, the waste heat contains impurities and dust, which affects subsequent processing and also pollutes the environment; 2. Existing heat pumps dry the surface of sludge, but the drying effect inside is not obvious. Summary of the Invention

[0004] The present invention provides a heat pump for utilizing waste heat from sludge drying to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat pump for utilizing waste heat from sludge drying, comprising a placement mechanism for placing and treating sticky and wet sludge;

[0006] The discharge mechanism is used to discharge the dried sludge.

[0007] Waste heat treatment mechanism, which is used to introduce waste heat generated by an external boiler into the oven.

[0008] A heat dissipation mechanism is used to dissipate excess heat from inside the oven.

[0009] The placement mechanism is mounted on the discharge mechanism, the waste heat mechanism is fixedly mounted on the discharge mechanism, a condensation component is fixedly mounted on the outside of the discharge mechanism, a control box is fixedly connected to the condensation component, the heat dissipation mechanism is located inside the control box, and an evaporation component is fixedly mounted inside the control box.

[0010] The placement mechanism includes a stop frame, the outer side of which is fixedly connected to the control box. A first flow hole and a second flow hole are respectively opened at the connection between the stop frame and the control box. A support rod is fixedly connected to the inner side of the stop frame, and a heat-conducting spiral ring is fixedly connected to the end of the support rod away from the stop frame.

[0011] Preferably, a central support is fixedly installed at the bottom of the inner cavity of the dwell frame, an inner shaft is fixedly connected inside the central support, a screening screen is rotatably connected to the outer side of the inner shaft, and a magnetic block is fixedly connected to the end of the screening screen away from the central support, wherein the sludge is placed on the screening screen.

[0012] Preferably, the discharge mechanism includes an insulated oven, which is fixedly installed at the bottom of the holding frame. The outer side of the insulated oven is fixedly connected to the condensation component, and the two are in communication with each other. A central panel is fixedly connected to the center of the inner cavity of the insulated oven. Insertion limiting plates are symmetrically sleeved at both ends of the central panel. The insertion limiting plates pass through the outer side of the insulated oven and extend into its interior.

[0013] Preferably, a second magnetic block is fixedly connected to the top of the insertion limiting plate, wherein the first and second magnetic blocks maintain a repulsive relationship. A side plate is fixedly connected to the end of the insertion limiting plate away from the central insert plate. Compression springs are symmetrically arranged at both ends of the insertion limiting plate. The outer end face of the compression spring is fixedly connected to the side plate. The end of the compression spring away from the side plate is fixedly connected to the outside of the heat preservation oven.

[0014] Preferably, the waste heat mechanism includes an inlet pipe, which is fixedly installed on the outside of the heat-insulating oven. A perforation is provided at the top of the inlet pipe, and an external air pump is fixedly installed at the top of the perforation. A pump frame is fixedly connected to the end of the external air pump away from the inlet pipe. The pump frame is fixedly connected to the top of the heat-insulating oven. An air inlet is provided on the outside of the heat-insulating oven, and a ventilation baffle is fixedly connected to the inner cavity of the heat-insulating oven.

[0015] Preferably, an inner tube is fixedly installed inside the inlet pipe, and an air plug is sleeved on the center of the inner tube. An obstruction plate is fixedly connected to one end of the air plug near the inner tube. A horizontal rail is slidably adapted to the outer side of the air plug, and a spring is fixedly connected to the inner side of the horizontal rail. The end of the spring away from the horizontal rail is fixedly connected to the air plug.

[0016] Preferably, a limiting ring is fixedly connected to both the outer side of the inner tube and the inner side of the inlet tube. A flexible ring plate is fixedly connected to the side of the limiting ring away from the inlet tube. A stretching filter is provided next to the flexible ring plate. The top end of the stretching filter is fixedly connected to the inner side of the inlet tube, and the bottom end of the stretching filter is fixedly connected to the outer side of the air plug.

[0017] Preferably, the heat dissipation mechanism includes a bent rod, which is fixedly connected to the inside of the control box. A frame is fixedly connected to the end of the bent rod away from the control box. A servo motor is fixedly installed at the center of the frame. A cooling fan is connected to the output end of the servo motor via a coupling. A first gear is fitted to the outer side of the output end of the servo motor. A second gear is meshed with the outer side of the first gear. A gear shaft is fitted to the center of the second gear.

[0018] Preferably, an external connecting rod is rotatably connected inside the control box. A friction sleeve is pressed and adapted at the end of the external connecting rod away from the control box. The end of the friction sleeve away from the external connecting rod is fixedly connected to a gear shaft. A sleeve roller is fixedly connected to the outside of the external connecting rod. A take-up bar is fixedly connected to the outside of the sleeve roller. A first positioning rod and a second positioning rod are pressed and adapted to the outside of the take-up bar. The first positioning rod is fixedly connected to the inside of the control box, and the second positioning rod is fixedly connected to the outside of the control box.

[0019] Preferably, a sealing plate is fixedly connected to the end of the take-up bar away from the roller, and the upper and lower ends of the sealing plate are slidably adapted to the guide rail. A fourth magnetic block is fixedly connected inside the guide rail, and a third magnetic block is provided at the end of the fourth magnetic block away from the guide rail. The third magnetic block is fixedly connected to the outside of the sealing plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The two ends of the stretch filter screen are fixedly connected to the inside of the inlet pipe and the outside of the air plug, respectively. Therefore, the inward movement of the air plug causes the stretch filter screen to extend, thereby filtering impurities and dust in the boiler waste heat and preventing impurities from mixing with sludge and affecting subsequent operations.

[0022] 2. The inlet pipe is fixedly connected to the outside of the insulated oven, and the outside of the insulated oven has an air inlet. Therefore, the waste heat will enter the insulated oven through the air inlet and the air vent plate in sequence, thereby heating and drying the damp sludge. At the same time, it also plays an environmental protection role in the secondary utilization of boiler waste heat.

[0023] 3. The hot air discharged from the air inlet and the second flow hole will have some of its heat transferred to the heat-conducting spiral ring. Then, the heat-conducting spiral ring will transfer the heat to every corner of itself, thereby drying the inside of the damp sludge and accelerating the drying process.

[0024] 4. The cooling fans create negative pressure and suction in the control box and the holding frame, and the excess heat inside the holding frame is discharged to the outside through the cooling fans. This process removes excess heat from the holding frame and the insulated oven, and does not pollute the environment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of a heat pump for utilizing waste heat from sludge drying according to the present invention.

[0026] Figure 2 This is a schematic diagram of the overall cap-removing structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the placement mechanism of the present invention.

[0028] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0029] Figure 5 This is a cross-sectional view of the placement mechanism of the present invention.

[0030] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0031] Figure 7 This is a cross-sectional view of the discharge mechanism of the present invention.

[0032] Figure 8 This is a schematic diagram of the discharge mechanism of the present invention.

[0033] Figure 9 This is a cross-sectional view of the waste heat recovery mechanism of the present invention.

[0034] Figure 10 For the present invention Figure 9 A magnified structural diagram at point C.

[0035] Figure 11 This is a schematic diagram of the heat dissipation mechanism of the present invention.

[0036] Figure 12 This is a side view of the heat dissipation mechanism of the present invention.

[0037] Figure 13 This is a schematic diagram of the structure of some components of the heat dissipation mechanism of the present invention.

[0038] Figure 14 This is an enlarged structural schematic diagram of some components of the heat dissipation mechanism of the present invention.

[0039] In the diagram: 1. Condensation assembly; 2. Control box; 3. Heat dissipation mechanism; 4. Evaporation assembly; 5. Placement mechanism; 6. Discharge mechanism; 7. Waste heat mechanism; 51. Dwelling frame; 52. Flow hole No. 1; 53. Flow hole No. 2; 54. Support rod; 55. Heat-conducting spiral ring; 56. Central support; 57. Inner shaft; 58. Screening screen; 59. Magnetic block No. 1; 61. Insulated oven; 62. Central panel; 63. Insertion limit plate; 64. Magnetic block No. 2; 65. Side plate; 66. Compression spring; 71. Inlet pipe; 72. External air pump; 73. Pump frame; 74. Air inlet; 75. 76. Ventilation baffle; 77. Internal pipe; 78. Air plug; 79. Obstruction plate; 70. Horizontal rail; 71. Spring; 72. Limiting ring; 73. Tough ring plate; 74. Stretch filter screen; 35. Bending rod; 36. Frame; 37. Servo motor; 38. Cooling fan; 39. Gear No. 1; 30. Gear No. 2; 31. Gear shaft; 32. Friction column sleeve; 33. External connecting rod; 34. Roller sleeve; 35. Rewinding strip; 36. Positioning rod No. 1; 37. Positioning rod No. 2; 38. Sealing plate; 39. Rail attachment; 300. Magnetic block No. 3; 301. Magnetic block No. 4. Detailed Implementation

[0040] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1 to 14 The present invention provides a technical solution: such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it includes a placement mechanism 5, which is used for placing and treating sticky wet sludge;

[0042] Discharge mechanism 6, which is used to discharge the dried sludge;

[0043] Waste heat mechanism 7, which is used to introduce waste heat generated by an external boiler into the oven.

[0044] Heat dissipation mechanism 3 is used to dissipate excess heat inside the oven;

[0045] The placement mechanism 5 is set on the discharge mechanism 6, the waste heat mechanism 7 is fixedly installed on the discharge mechanism 6, the condensation component 1 is fixedly installed on the outside of the discharge mechanism 6, the control box 2 is fixedly connected to the condensation component 1, the heat dissipation mechanism 3 is set inside the control box 2, and the evaporation component 4 is fixedly installed inside the control box 2.

[0046] The placement mechanism 5 includes a holding frame 51, the outer side of which is fixedly connected to the control box 2. A first flow hole 52 and a second flow hole 53 are respectively opened at the connection points between the holding frame 51 and the control box 2. A support rod 54 is fixedly connected to the inner side of the holding frame 51, and a heat-conducting spiral ring 55 is fixedly connected to the end of the support rod 54 away from the holding frame 51. The heat-conducting spiral ring 55 is connected to the inside of the holding frame 51 via the support rod 54. The dry residual heat entering the heat-insulating oven 61 through the air inlet 74 and the dry hot air entering the holding frame 51 through the second flow hole 53 will both come into contact with the heat-conducting spiral ring 55. The damp sludge acts as a barrier for the heat-conducting spiral ring. The ring 55 is wrapped around the sludge, and the heat-conducting spiral ring 55 has thermal conductivity. Therefore, some of the heat from the hot air discharged from the air inlet 74 and the second flow hole 53 will be transferred to the heat-conducting spiral ring 55. Then, the heat-conducting spiral ring 55 will transfer the heat to every corner of itself, thereby drying the inside of the damp sludge and accelerating the drying speed. A middle support 56 is fixedly installed at the bottom of the inner cavity of the dwell frame 51. An inner shaft 57 is fixedly connected inside the middle support 56. A screening screen 58 is rotatably connected to the outside of the inner shaft 57. A magnetic block 59 is fixedly connected to the end of the screening screen 58 away from the middle support 56. The sludge is placed on the screening screen 58. When the equipment is running stably, dry hot air is sent into the bottom of the insulated drying oven 61 by a blower, and penetrates the damp sludge in the retention frame 51. The moisture in the sludge is then heated and evaporated into water vapor. The humid air then flows through the first flow hole 52 and enters the evaporation assembly 4 of the heat pump system for cooling and dehumidification. The interior of the evaporation assembly 4 is mainly an evaporator. The refrigerant releases the latent heat of condensation of the humid air absorbed in the evaporator at the condensation assembly 1. After being heated by the condensation assembly 1, the dry hot air is then sent by the internal fan through the second flow hole 53 into the retention frame 51 to continue drying the sludge.

[0047] like Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, the discharge mechanism 6 includes an insulated oven 61, which is fixedly installed at the bottom of the holding frame 51. The outer side of the insulated oven 61 is fixedly connected to the condensing assembly 1, and the two are interconnected. A central panel 62 is fixedly connected to the center of the inner cavity of the insulated oven 61. Insertion limiting plates 63 are symmetrically sleeved at both ends of the central panel 62. The insertion limiting plates 63 pass through the outer side of the insulated oven 61 and extend into its interior. A second magnetic block 64 is fixedly connected to the top of the insertion limiting plate 63. The first magnetic block 59 and the second magnetic block 64 maintain a repulsive relationship. A side plate 65 is fixedly connected to the end of the insertion limiting plate 63 away from the central panel 62. Compression springs 66 are symmetrically arranged at both ends of the insertion limiting plate 63. The outer end face of the compression spring 66 is fixedly connected to the side plate 65. The end of the compression spring 66 away from the side plate 65 is fixedly connected to the outer side of the insulated oven 61. Furthermore, after the sludge is dried, the screening screen 58 is deflected downwards via the inner shaft 57 by external electrical equipment. The first magnetic block 59, which is fixedly connected to both ends of the screening screen 58, moves downwards and becomes exposed. Then, the first magnetic block 59 and the second magnetic block 64 repel each other. As a result, the insertion limiting plate 63 connected to the second magnetic block 64 extends outwards from the central insert 62. The first magnetic block 59 and the second magnetic block 64 are on the same vertical plane. At the same time, the side plate 65 connected to the insertion limiting plate 63 stretches the compression spring 66. Finally, through the downward deflection of the screening screen 58 and the outward extension of the insertion limiting plate 63, the dried sludge can be smoothly discharged outwards through the bottom of the heat-insulating oven 61.

[0048] The waste heat treatment mechanism 7 includes an inlet pipe 71, which is fixedly installed on the outside of the heat-insulating oven 61. A perforation is provided at the top of the inlet pipe 71, and an external air pump 72 is fixedly installed at the top of the perforation. A pump frame 73 is fixedly connected to the end of the external air pump 72 away from the inlet pipe 71. The pump frame 73 is fixedly connected to the top of the heat-insulating oven 61. An air inlet 74 is provided on the outside of the heat-insulating oven 61. A venting baffle 75 is fixedly connected to the inner cavity of the heat-insulating oven 61. An inner tube 76 is fixedly installed inside the inlet pipe 71. An air plug 77 is sleeved at the center of the inner tube 76. A blocking plate 78 is fixedly connected to the end of the air plug 77 near the inner tube 76. A horizontal rail 79 is slidably fitted on the outside of the air plug 77. A spring 70 is fixedly connected to the inside of the horizontal rail 79. The end of the spring 70 away from the horizontal rail 79 is fixedly connected to the air plug 77. By placing the damp sludge into the holding frame 51 and then connecting the external pipe to the inlet pipe 71, dry residual heat will flow through the external pipe and enter the inlet pipe 71. This residual heat is provided by other heat sources in the plant area, such as the boiler. The residual heat entering the inlet pipe 71 will impact the obstruction plate 78, which is funnel-shaped to allow the residual heat to impact its surface more effectively. The other end of the obstruction plate 78 is connected to the air plug 77, so the air plug 77 will move along the horizontal rail 79 toward the interior of the inlet pipe 71, compressing the spring 70. The spring 70 resets the air plug 77. As the air plug 77 penetrates deeper into the inlet pipe 71, it separates from the internal pipe 76, and then the residual heat will flow out from the gap where the two are separated. The waste heat flows through and impacts the stretched filter screen 703, whose two ends are fixedly connected to the inside of the inlet pipe 71 and the outside of the air plug 77, respectively. Therefore, the inward movement of the air plug 77 causes the stretched filter screen 703 to extend, thereby filtering impurities and dust in the boiler waste heat and preventing impurities from mixing with sludge and affecting subsequent operations. Finally, the waste heat passes through the stretched filter screen 703 and enters the depth inside the inlet pipe 71, which is fixedly connected to the outside of the heat-insulating oven 61. The outside of the heat-insulating oven 61 is provided with an air inlet 74, so the waste heat enters the heat-insulating oven 61 through the air inlet 74 and the air vent 75 in sequence, thereby heating and drying the wet sludge and also playing an environmental protection role in the secondary utilization of boiler waste heat.

[0049] A limiting ring 701 is fixedly connected to both the outer side of the inner tube 76 and the inner side of the inlet tube 71. A tough ring plate 702 is fixedly connected to the side of the limiting ring 701 away from the inlet tube 71. A stretching filter 703 is provided on the side of the tough ring plate 702. The top end of the stretching filter 703 is fixedly connected to the inner side of the inlet tube 71, and the bottom end of the stretching filter 703 is fixedly connected to the outer side of the air plug 77. Furthermore, once all the residual heat has flowed into the inlet pipe 71, the air-blocking head 77 will re-seal the inner pipe 76 under the action of the spring 70. At the same time, the stretch filter 703 will return to its contracted state. At this point, the external air pump 72 will be activated, causing it to generate suction at the top of the inlet pipe 71. Subsequently, the flexible ring 702, which is affected by the suction, will deflect in the direction of the suction generated by the external air pump 72. Then, the impurities and dust filtered by the stretch filter 703 will pass through the bent flexible ring 702 and be sucked into the external air pump 72 for collection and processing.

[0050] like Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, the heat dissipation mechanism 3 includes a bent rod 31, which is fixedly connected to the inside of the control box 2. A frame 32 is fixedly connected to the end of the bent rod 31 away from the control box 2. A servo motor 33 is fixedly mounted at the center of the frame 32. A cooling fan 34 is connected to the output end of the servo motor 33 via a coupling. A first gear 35 is fitted to the outer side of the output end of the servo motor 33. A second gear 36 meshes with the outer side of the first gear 35. A gear shaft 37 is fitted to the center of the second gear 36. The internal rotation of the control box 2... An external connecting rod 39 is dynamically connected. A friction sleeve 38 is pressed and adapted at the end of the external connecting rod 39 away from the control box 2. The end of the friction sleeve 38 away from the external connecting rod 39 is fixedly connected to the gear shaft 37. A sleeve roller 30 is fixedly connected to the outside of the external connecting rod 39. A take-up bar 301 is fixedly connected to the outside of the sleeve roller 30. A first positioning rod 302 and a second positioning rod 303 are pressed and adapted to the outside of the take-up bar 301. The first positioning rod 302 is fixedly connected to the inside of the control box 2, and the second positioning rod 303 is fixedly connected to the outside of the control box 2. When the sealing plate 304 moves to the other end of the rail 305, the take-up bar 301 will stop winding and generate a reverse force to prevent the outer connecting rod 39 and the sleeve roller 30 from rotating. Because the outer connecting rod 39 is squeezed and adapted to the friction sleeve 38, relative rotation will occur between the outer connecting rod 39 and the friction sleeve 38 at this time. The friction sleeve 38 rotates, but the outer connecting rod 39 remains stationary, while the take-up bar 301 remains in the winding state.

[0051] A sealing plate 304 is fixedly connected to the end of the take-up bar 301 away from the sleeve roller 30. Both the upper and lower ends of the sealing plate 304 are slidably fitted with a rail 305. A fourth magnetic block 307 is fixedly connected inside the rail 305. A third magnetic block 306 is provided at the end of the fourth magnetic block 307 away from the rail 305. The third magnetic block 306 is fixedly connected to the outside of the sealing plate 304. When the temperature inside the insulated oven 61 or the holding frame 51 becomes too high and reaches the set value, the servo motor 33 is activated, causing the cooling fan 34, which is connected to its output end via a coupling, to rotate. Simultaneously, the first gear 35, which is fitted onto the output end of the servo motor 33, rotates and meshes with the second gear 36. The center of the second gear 36 is connected to the friction sleeve 38 via a gear shaft 37. The interior of the friction sleeve 38 is fitted with the outer connecting rod 39. Therefore, initially, the second gear 36 will rotate along with the gear shaft 37, the friction sleeve 38, and the outer connecting rod 39. The outer side of the outer connecting rod 39 is connected to the sleeve roller 30, and the surface of the sleeve roller 30 is connected to the take-up strip 301. The other end of 01 is connected to the sealing plate 304, so the sealing plate 304 will move outward along the rail 305. The third magnetic block 306, which is fixedly connected to the sealing plate 304, and the fourth magnetic block 307, which is fixedly connected inside the rail 305, maintain a repulsive relationship and play a role in resetting the sealing plate 304. They then pass outward from the stop frame 51. At this time, another hole connecting the control box 2 and the stop frame 51 will be exposed. Finally, the cooling fan 34 will create negative pressure and generate suction in the control box 2 and the stop frame 51 respectively. The excess heat inside the stop frame 51 will be discharged outward through the cooling fan 34, thereby playing a role in dissipating excess heat in the stop frame 51 and the heat preservation oven 61 and preventing environmental pollution.

[0052] In use, the present invention works as follows: First, wet sludge is placed into the holding frame 51. Then, the external pipe is connected to the inlet pipe 71. Subsequently, dry residual heat flows through the external pipe and enters the inlet pipe 71. This residual heat is provided by other heat sources in the plant area, such as the boiler. The residual heat entering the inlet pipe 71 impacts the obstruction plate 78. The other end of the obstruction plate 78 is connected to the air-blocking head 77. Therefore, the air-blocking head 77 moves along the horizontal rail 79 toward the inside of the inlet pipe 71, compressing the spring 70. As the air-blocking head 77 penetrates deeper into the inlet pipe 71, it separates from the inner pipe 76. Then, the residual heat flows out from both. The phase-separated space flows and impacts the stretching filter 703, whose two ends are fixedly connected to the inside of the inlet pipe 71 and the outside of the air block 77, respectively. Therefore, the inward movement of the air block 77 causes the stretching filter 703 to extend and filter impurities and dust in the waste heat. Finally, the waste heat will pass through the stretching filter 703 and enter the depth inside the inlet pipe 71, which is fixedly connected to the outside of the heat-insulating oven 61. The outside of the heat-insulating oven 61 is provided with an air inlet 74. Therefore, the waste heat will enter the heat-insulating oven 61 through the air inlet 74 and the air vent 75 in sequence to achieve the heating and drying treatment of the wet sludge. Furthermore, once all the residual heat has flowed into the inlet pipe 71, the air-blocking head 77 will re-seal the inner pipe 76 under the action of the spring 70. At the same time, the stretch filter 703 will return to its contracted state. At this point, the external air pump 72 will be activated, causing it to generate suction at the top of the inlet pipe 71. Subsequently, the flexible ring 702, which is affected by the suction, will deflect in the direction of the suction generated by the external air pump 72. Then, the impurities and dust filtered by the stretch filter 703 will pass through the bent flexible ring 702 and be sucked into the external air pump 72 for collection and processing.

[0053] When the equipment is running stably, dry hot air is sent into the bottom of the insulated drying oven 61 by a blower, and penetrates the damp sludge in the retention frame 51. The moisture in the sludge is then heated and evaporated into water vapor. The humid air then flows through the first flow hole 52 and enters the evaporation assembly 4 of the heat pump system for cooling and dehumidification. The interior of the evaporation assembly 4 is mainly an evaporator. The refrigerant releases the latent heat of condensation of the humid air absorbed in the evaporator at the condensation assembly 1. After being heated by the condensation assembly 1, the dry hot air is then sent by the internal fan through the second flow hole 53 into the retention frame 51 to continue drying the sludge.

[0054] The interior of the holding frame 51 is connected to a heat-conducting spiral ring 55 via a support rod 54. The residual heat from drying that enters the heat-insulating oven 61 through the air inlet 74, and the hot dry air that enters the holding frame 51 through the second flow hole 53, both come into contact with the heat-conducting spiral ring 55. The damp sludge wraps around the heat-conducting spiral ring 55, which is thermally conductive. Therefore, some of the heat from the hot air discharged from the air inlet 74 and the second flow hole 53 is transferred to the heat-conducting spiral ring 55. The heat-conducting spiral ring 55 then distributes the heat to every corner of itself, thereby achieving rapid drying of the damp sludge. Furthermore, after the sludge is dried, the screening screen 58 is deflected downwards via the inner shaft 57 by external electrical equipment. The first magnetic block 59, which is fixedly connected to both ends of the screening screen 58, moves downwards and becomes exposed. Then, the first magnetic block 59 and the second magnetic block 64 repel each other. As a result, the insertion limiting plate 63 connected to the second magnetic block 64 extends outwards from the central insert 62. At the same time, the side plate 65 connected to the insertion limiting plate 63 stretches the compression spring 66. Finally, through the downward deflection of the screening screen 58 and the outward extension of the insertion limiting plate 63, the dried sludge can be smoothly discharged outwards through the bottom of the heat-insulating oven 61.

[0055] When the temperature inside the insulated oven 61 or the holding frame 51 becomes too high and reaches the set value, the servo motor 33 is activated, causing the cooling fan 34, which is connected to its output end via a coupling, to rotate. Simultaneously, the first gear 35, which is fitted onto the output end of the servo motor 33, rotates and meshes with the second gear 36. The center of the second gear 36 is connected to the friction sleeve 38 via a gear shaft 37. Furthermore, the interior of the friction sleeve 38 is fitted with the outer connecting rod 39. Therefore, initially, the second gear 36 will drive the gear shaft 37, the friction sleeve 38, and the outer connecting rod 39 respectively. The rods 39 rotate together. The outer side of the outer connecting rod 39 is connected to the sleeve roller 30, and the surface of the sleeve roller 30 is connected to the take-up bar 301. The other end of the take-up bar 301 is connected to the sealing plate 304. Therefore, the sealing plate 304 will move outward along the rail 305 and pass outward from the stop frame 51. At this time, another hole connecting the control box 2 and the stop frame 51 will be exposed. Finally, the cooling fan 34 will form a negative pressure and generate suction in the control box 2 and the stop frame 51 respectively, and the excess heat inside the stop frame 51 will be discharged outward through the cooling fan 34.

[0056] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made by those skilled in the art based on the above concepts without creative effort shall fall within the scope of protection of the present invention.

Claims

1. A heat pump for utilizing waste heat from sludge drying, characterized in that, include: Placement mechanism (5) is used for placing and treating sticky wet sludge; Discharge mechanism (6), which is used to discharge the dried sludge; Waste heat mechanism (7), which is used to introduce waste heat from an external boiler into the oven; Heat dissipation mechanism (3) is used to dissipate excess heat inside the oven; The placement mechanism (5) is set on the discharge mechanism (6), the waste heat mechanism (7) is fixedly installed on the discharge mechanism (6), the condensation component (1) is fixedly installed on the outside of the discharge mechanism (6), the control box (2) is fixedly connected to the condensation component (1), the heat dissipation mechanism (3) is set inside the control box (2), and the evaporation component (4) is fixedly installed inside the control box (2). The placement mechanism (5) includes a stop frame (51), the outer side of which is fixedly connected to the control box (2). A first flow hole (52) and a second flow hole (53) are respectively opened at the connection between the stop frame (51) and the control box (2). A support rod (54) is fixedly connected to the inner side of the stop frame (51), and a heat-conducting spiral ring (55) is fixedly connected to the end of the support rod (54) away from the stop frame (51). A central support (56) is fixedly installed at the bottom of the inner cavity of the dwell frame (51). An inner shaft (57) is fixedly connected inside the central support (56). A screening screen (58) is rotatably connected to the outside of the inner shaft (57). A magnetic block (59) is fixedly connected to one end of the screening screen (58) away from the central support (56). Sludge is placed on the screening screen (58). The discharge mechanism (6) includes an insulated oven (61), which is fixedly installed at the bottom of the dwell frame (51). The outer side of the insulated oven (61) is fixedly connected to the condensation assembly (1), and the two are interconnected. A central panel (62) is fixedly connected to the center of the inner cavity of the insulated oven (61). Insertion limiting plates (63) are symmetrically sleeved at both ends of the central panel (62). The insertion limiting plates (63) are inserted through the outer side of the insulated oven (61) and extend into its interior. The waste heat mechanism (7) includes an inlet pipe (71), which is fixedly installed on the outside of the heat preservation oven (61). The top of the inlet pipe (71) has a perforation, and an external air pump (72) is fixedly installed on the top of the perforation. The end of the external air pump (72) away from the inlet pipe (71) is fixedly connected to a pump frame (73), which is fixedly connected to the top of the heat preservation oven (61). An air inlet (74) is opened on the outside of the heat preservation oven (61), and a ventilation baffle (75) is fixedly connected to the inner cavity of the heat preservation oven (61). An inner tube (76) is fixedly installed inside the inlet pipe (71). An air plug (77) is sleeved on the center of the inner tube (76). An obstruction plate (78) is fixedly connected to one end of the air plug (77) near the inner tube (76). A horizontal rail (79) is slidably adapted to the outside of the air plug (77). A spring (70) is fixedly connected to the inside of the horizontal rail (79). The end of the spring (70) away from the horizontal rail (79) is fixedly connected to the air plug (77). A limiting ring (701) is fixedly connected to the outer side of the inner tube (76) and the inner side of the inlet tube (71). A tough ring plate (702) is fixedly connected to the side of the limiting ring (701) away from the inlet tube (71). A stretching filter (703) is provided on the side of the tough ring plate (702). The top end of the stretching filter (703) is fixedly connected to the inner side of the inlet tube (71), and the bottom end of the stretching filter (703) is fixedly connected to the outer side of the air plug (77).

2. The sludge drying waste heat utilization heat pump according to claim 1, characterized in that: The top of the insertion limiting plate (63) is fixedly connected to a second magnetic block (64), wherein the first magnetic block (59) and the second magnetic block (64) maintain a repulsive relationship. The end of the insertion limiting plate (63) away from the central insert plate (62) is fixedly connected to a side plate (65). Both ends of the insertion limiting plate (63) are symmetrically provided with compression springs (66). The outer end face of the compression spring (66) is fixedly connected to the side plate (65). The end of the compression spring (66) away from the side plate (65) is fixedly connected to the outside of the heat preservation oven (61).

3. The sludge drying waste heat utilization heat pump according to claim 1, characterized in that: The heat dissipation mechanism (3) includes a bent rod (31), which is fixedly connected to the inside of the control box (2). The end of the bent rod (31) away from the control box (2) is fixedly connected to a frame (32). A servo motor (33) is fixedly installed in the center of the frame (32). The output end of the servo motor (33) is connected to a cooling fan (34) through a coupling. A first gear (35) is fitted on the outer side of the output end of the servo motor (33). A second gear (36) is meshed on the outer side of the first gear (35). A gear shaft (37) is fitted on the center of the second gear (36).

4. A sludge drying waste heat utilization heat pump according to claim 3, characterized in that: The control box (2) is internally rotatably connected to an external connecting rod (39). The end of the external connecting rod (39) away from the control box (2) is fitted with a friction sleeve (38). The end of the friction sleeve (38) away from the external connecting rod (39) is fixedly connected to a gear shaft (37). A sleeve roller (30) is fixedly connected to the outside of the external connecting rod (39). A take-up bar (301) is fixedly connected to the outside of the sleeve roller (30). A first positioning rod (302) and a second positioning rod (303) are respectively fitted to the outside of the take-up bar (301). The first positioning rod (302) is fixedly connected to the inside of the control box (2), and the second positioning rod (303) is fixedly connected to the outside of the control box (2).

5. A sludge drying waste heat utilization heat pump according to claim 4, characterized in that: A sealing plate (304) is fixedly connected to one end of the take-up bar (301) away from the sleeve roller (30). Both the upper and lower ends of the sealing plate (304) are slidably fitted with a guide rail (305). A fourth magnetic block (307) is fixedly connected inside the guide rail (305). A third magnetic block (306) is provided at one end of the fourth magnetic block (307) away from the guide rail (305). The third magnetic block (306) is fixedly connected to the outside of the sealing plate (304).

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