A composite low-temperature dryer heat source providing device and method

Abstract

The present application relates to the technical fields of heat source supply of drying equipment, and discloses a composite low-temperature dryer heat source providing device and method, which comprises a collecting box, one side of the collecting box is provided with a fan, the input end of the fan is fixedly connected with a first conveying pipe, the other end of the first conveying pipe is provided with a collecting and cleaning assembly, the collecting and cleaning assembly is used for extracting chicken house waste heat and conveying the waste heat to the collecting box, the output end of the fan is fixedly connected with a second conveying pipe, the other end of the second conveying pipe is communicated with the inside of the collecting box, the other side of the collecting box is provided with a preheating assembly, and the preheating assembly is used for uniform heating and gradient preheating of the waste heat. The waste heat is extracted by the fan, the heat source can be switched, impurities are filtered by a filter screen, the filter screen is automatically cleaned by relying on a shunt airflow to drive an impeller, a reciprocating screw rod and a cleaning brush, impurities are collected, airflow is recycled, and the extraction and purification of the chicken house waste heat are stably completed.

Description

Technical Field

[0001] This invention relates to the field of heat source supply technology for drying equipment, specifically to a heat source supply device and method for a composite low-temperature dryer. Background Technology

[0002] In the material handling process related to livestock and poultry farming, the use of low-temperature drying equipment is becoming increasingly common. However, such equipment typically requires a continuous and stable heat source to operate. Chicken houses generate a significant amount of waste heat during daily operations. Directly releasing this heat would result in substantial energy waste; therefore, recovering and utilizing it in drying equipment has high practical value in actual production.

[0003] Currently, most common waste heat utilization methods simply involve extracting and transporting hot air. In actual use, chicken feathers, dust, and other impurities in the chicken coop enter the pipes along with the hot air, easily adhering to the inside of the channels or filter components. Over time, this can cause airflow obstruction, affecting heat transfer efficiency. Regular manual cleaning is often required, resulting in high maintenance costs. Furthermore, the temperature distribution of directly extracted hot air is uneven, with significant local temperature differences, making it difficult to provide stable operating conditions for the drying equipment. Even with simple heat storage components, most only absorb and release heat once, resulting in insufficient waste heat utilization and substantial heat loss.

[0004] Furthermore, condensation is easily generated during the hot air transport and heat exchange process. If it cannot be discharged in time, it will accumulate inside the equipment, further affecting the heat exchange effect and even reducing the service life of components. Most existing heat source supply structures only have a single transport or simple heating function, making it difficult to simultaneously achieve integrated operation of impurity cleaning, waste heat recovery, temperature equalization and stabilization, and condensate discharge. This results in low overall heat source supply efficiency and insufficient stability, making it unable to well adapt to the continuous operation requirements of low-temperature dryers. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a composite low-temperature dryer heat source supply device and method, which solves the problems of easy blockage by impurities, uneven hot air temperature, low waste heat utilization rate, and difficulty in stably supplying heat to the low-temperature dryer during the recovery and utilization of waste heat from chicken houses.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A first aspect of the present invention provides a composite low-temperature dryer heat source supply device, comprising a collection box, a fan disposed on one side of the collection box, a first conveying pipe fixedly connected to the input end of the fan, a collection and cleaning component disposed at the other end of the first conveying pipe, the collection and cleaning component being used to extract waste heat from the chicken coop and convey it to the collection box, a second conveying pipe fixedly connected to the output end of the fan, the other end of the second conveying pipe communicating with the interior of the collection box, a preheating component disposed on the other side of the collection box, the preheating component being used to uniformly preheat the waste heat in stages, and a waste heat recovery component disposed at the bottom of the preheating component, the waste heat recovery component being used to store and stabilize the preheated waste heat.

[0007] Preferably, the collection and cleaning assembly includes a collection cover, the bottom of which is fixed to one end of the first conveying pipe. A first filter screen is fixedly connected inside the collection cover. A reciprocating screw is rotatably connected inside the collection cover. Two sliders are slidably connected inside the collection cover. One slider is threaded to the outer periphery of the reciprocating screw. A cleaning brush is rotatably connected between the sliders and contacts the surface of the first filter screen. A fixing cover is fixedly connected to the outside of the collection cover. A fan blade is rotatably connected inside the fixing cover. One end of the fan blade is fixedly connected to one end of the reciprocating screw. A first air supply pipe is fixedly connected to the outside of the fixing cover. The other end of the first air supply pipe is fixedly connected to the second conveying pipe. A waste bin is fixedly connected to the outside of the collection cover. A second air supply pipe is fixedly connected to the outside of the fixing cover. The other end of the second air supply pipe is fixedly connected inside the collection cover.

[0008] Preferably, the collection cover has a drain trough at the position corresponding to the waste bin, the drain trough is connected to the waste bin, and a drawer is slidably connected inside the waste bin.

[0009] Preferably, the preheating assembly includes a heat collection chamber and a baffle. The heat collection chamber is located inside the collection box, and the baffle is fixedly connected inside the heat collection chamber. A condensate collection chamber is located inside the collection box. A tapered guide pipe is fixedly connected to one side of the collection box, and a preheating cylinder is fixedly connected to the other end of the tapered guide pipe. An inner cylinder is fixedly connected inside the preheating cylinder, and a spiral guide plate is fixedly connected to the outer periphery of the inner cylinder. A third gas supply pipe is fixedly connected to the top of the preheating cylinder, and a gas outlet pipe is fixedly connected to the top of the inner cylinder. A heat pump is fixedly connected to the other end of the gas outlet pipe.

[0010] Preferably, multiple baffles are provided, and the multiple baffles are arranged in an alternating vertical arrangement.

[0011] Preferably, the waste heat recovery assembly includes a lower cylinder, which is disposed at the bottom of the preheating cylinder. A first guide shroud is fixedly connected inside the lower cylinder, and a second guide shroud is fixedly connected above the first guide shroud. A through hole is opened inside the second guide shroud. Multiple ceramic discs are fixedly connected inside the lower cylinder, and a first connecting pipe is fixedly connected to the bottom of the lower cylinder. The other end of the first connecting pipe is connected to the condensate collection chamber.

[0012] Preferably, the waste heat recovery assembly further includes an upper cylinder, which is fixedly connected to the top of the lower cylinder. A first flow equalization vane is fixedly connected inside the upper cylinder, and a second flow equalization vane is fixedly connected inside the upper cylinder. A second connecting pipe is fixedly connected to the outside of the lower cylinder, and the other end of the second connecting pipe communicates with the upper cylinder. The upper cylinder communicates with the bottom of the inner cylinder.

[0013] Preferably, the first flow equalization blade is horizontally arranged, and the second flow equalization blade is inclinedly arranged above the first flow equalization blade.

[0014] Preferably, a natural air communication pipe is fixedly connected to the outside of the first delivery pipe, a second filter screen is fixedly connected to one end of the natural air communication pipe, and valves are fixedly connected to the outer periphery of both the first delivery pipe and the natural air communication pipe.

[0015] A second aspect of the present invention provides a method of using a heat source supply device for a composite low-temperature dryer, comprising the following steps: S1. According to seasonal needs, open or close the valve, and use the fan to draw natural air heat or chicken house waste heat through the natural air connecting pipe or collection hood. When using the natural air connecting pipe, the air enters the heat collection chamber directly after passing through the second filter. When using chicken house waste heat, the waste heat passes through the first filter inside the collection hood. The first filter intercepts impurities such as chicken feathers and dust in the waste heat. The filtered waste heat is transported to the heat collection chamber through the first conveying pipe. S2. When the fan is working, part of the airflow is diverted to the inside of the fixed cover through the first air supply pipe, which blows the fan blades to rotate. The fan blades drive the reciprocating screw to rotate synchronously. The reciprocating screw drives the cleaning brush to clean the surface of the first filter screen through the slider. The cleaned impurities fall into the waste bin. The airflow after driving the fan blades is sent back to the collection cover through the second air supply pipe to realize airflow circulation. S3. The residual heat entering the heat collection cavity is uniformly treated by multiple staggered baffles, and then enters the preheating cylinder through the conical guide tube. It flows along the spiral guide plate on the inner wall of the preheating cylinder to achieve step heating. The heated airflow is then transported to the lower cylinder through the third gas delivery pipe. S4. The airflow entering the lower cylinder is guided towards the center by the first guide shroud, and then flows upward through the second guide shroud, passing through multiple ceramic discs. The ceramic discs absorb and store some heat. The airflow then continues to rise and enters the upper cylinder. The heat absorbed by the ceramic discs enters between the first and second guide shrouds through the through holes on the second guide shroud, and also enters the upper cylinder through the second connecting pipe. It mixes with the airflow delivered by the second connecting pipe and passes through the first and second flow equalization vanes in sequence for temperature equalization treatment, thereby achieving graded temperature stabilization. S5. The heated air, after being stabilized, is delivered to the heat pump through the inner cylinder and the air outlet pipe. The heat pump is started or stopped according to the drying requirements. The heat pump further dehumidifies and heats the heated air before delivering it to the dryer to complete the heat source supply. S6. Periodically remove the drawer from the waste bin to clean out impurities, and at the same time, periodically drain the condensate from the condensate collection chamber to ensure the normal operation of the device.

[0016] This invention provides a heat source supply device and method for a composite low-temperature dryer. It has the following beneficial effects: 1. This invention uses a fan to draw airflow and switches heat sources with valves, filters impurities using a filter screen, and simultaneously drives the fan blades to rotate, which in turn drives a reciprocating screw, slider, and cleaning brush to automatically clean the filter screen. Impurities are then transported to a waste bin for collection, and the airflow returns to the collection hood through a return pipe. This achieves efficient extraction of waste heat from the chicken house, automatic filter cleaning, and airflow recycling. It solves the problems of low heat exchange efficiency, high manual cleaning costs, and low energy utilization in existing chicken house waste heat collection systems, which are prone to filter clogging due to impurities. The above structure improves the cleanliness and continuity of waste heat collection and significantly reduces maintenance costs.

[0017] 2. This invention uses staggered baffles to create turbulence, which drives the airflow to mix thoroughly. At the same time, the conical guide tube and spiral guide plate guide the airflow to flow in an orderly manner, thereby achieving the effects of uniform temperature of waste heat, eliminating local temperature differences, collecting condensate at the same time, and realizing step heating. This solves the problems of uneven temperature distribution after waste heat collection and easy condensate residue leading to low preheating efficiency. The above structure improves the stability of heat source delivery and preheating efficiency.

[0018] 3. This invention guides the airflow towards the center through a conical guide shroud, causing the airflow to pass through ceramic discs and flow equalization vanes in sequence. The ceramic discs store residual heat and conduct it in the reverse direction through the through holes. After merging with the main airflow, the flow equalization vanes eliminate eddies and mix and equalize the temperature, thereby achieving the effect of deep storage of residual heat and graded temperature stabilization. This solves the problems of insufficient storage of residual heat and large fluctuations in the output hot air temperature in existing systems. The above structure improves the utilization rate of residual heat and the stability of heat source output. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram showing the side structure of the present invention; Figure 3 A schematic diagram illustrating the structure of the collection cover of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional structural diagram of the collection box of the present invention; Figure 6 This is a cross-sectional structural diagram of the preheating cylinder of the present invention; Figure 7 This is a schematic diagram showing the cross-sectional structure of the cylinder of the present invention; Figure 8 This is a structural schematic diagram showing the front cross-section of the cylinder of the present invention.

[0020] The components are as follows: 1. Collection box; 2. Fan; 3. First conveying pipe; 4. Collection and cleaning assembly; 41. Collection cover; 42. First filter screen; 43. Reciprocating screw; 44. Slider; 45. Cleaning brush; 46. Fixing cover; 47. Fan blade; 48. First air supply pipe; 49. Waste bin; 410. Second air supply pipe; 5. Preheating assembly; 51. Heat collection chamber; 52. Baffle; 53. Condensate collection chamber; 54. Conical guide pipe; 55. Preheating cylinder; 56. Screw. 57. Inner cylinder; 58. Third air supply pipe; 59. Air outlet pipe; 6. Waste heat recovery assembly; 61. Lower cylinder; 62. First air guide shroud; 63. Second air guide shroud; 64. Through hole; 65. Ceramic disc; 66. First connecting pipe; 67. Upper cylinder; 68. Second connecting pipe; 69. First flow equalization vane; 610. Second flow equalization vane; 7. Natural air connecting pipe; 8. Second filter screen; 9. Valve; 10. Second delivery pipe; 11. Heat pump. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 -Appendix Figure 8This invention provides a composite low-temperature dryer heat source supply device, including a collection box 1. A fan 2 is provided on one side of the collection box 1. A first conveying pipe 3 is fixedly connected to the input end of the fan 2. A collection and cleaning component 4 is provided at the other end of the first conveying pipe 3. The collection and cleaning component 4 is used to extract waste heat from the chicken house and transport it to the collection box 1. A second conveying pipe 10 is fixedly connected to the output end of the fan 2. The other end of the second conveying pipe 10 is connected to the inside of the collection box 1. A preheating component 5 is provided on the other side of the collection box 1. The preheating component 5 is used to uniformly preheat the waste heat in stages. A waste heat recovery component 6 is provided at the bottom of the preheating component 5. The waste heat recovery component 6 is used to store and stabilize the preheated waste heat. A natural air connecting pipe 7 is fixedly connected to the outside of the first conveying pipe 3. A second filter screen 8 is fixedly connected to one end of the natural air connecting pipe 7. Valves 9 are fixedly connected to the outer periphery of both the first conveying pipe 3 and the natural air connecting pipe 7.

[0023] Specifically, the collection box 1 is used to contain airflow and achieve initial flow equalization and condensate collection. A fan 2 is installed on one side of the collection box 1. The fan 2 is a centrifugal high-temperature resistant fan used to generate negative pressure to extract and transport airflow, providing power to the entire device and ensuring stable pressure and flow rate for waste heat transport. The input end of the fan 2 is sealed and fixedly connected to a first conveying pipe 3 via a flange. The first conveying pipe 3 is a high-temperature resistant insulated steel pipe used to transport waste heat airflow and reduce heat loss. A collection and cleaning assembly 4 is sealed and fixedly installed at the other end of the first conveying pipe 3. The collection and cleaning assembly 4 is used to collect, filter, and automatically clean the waste heat from the chicken house, preventing impurities from clogging the pipes and improving the purity of the airflow. The collection and cleaning assembly 4 is used to extract waste heat from the chicken house and seal it to the collection box 1. The output end of the fan 2 is fixedly connected to a second conveying pipe 10 via a sealed joint. The second conveying pipe 10 is used to smoothly deliver the filtered waste heat into the collection box 1. The other end of the second conveying pipe 10 is sealed and connected to the interior of the collection box 1. A preheating component 5 is sealed and fixed on the other side of the collection box 1. The preheating component 5 works in conjunction with the collection box 1 to perform multi-stage airflow and heat exchange, achieving uniform mixing of waste heat, eliminating localized temperature differences, and realizing tiered heating. The preheating component 5 is used for uniform temperature distribution and tiered preheating of waste heat. A waste heat recovery component 6 is sealed and connected to the bottom of the preheating component 5. The waste heat recovery component 6 is used to store and stabilize the preheated waste heat, making the hot air entering the rear end more uniform and stable. A natural air connection pipe 7 is sealed and fixed to the outside of the first delivery pipe 3 via a three-way connector. The natural air connection pipe 7 is used to supplement ambient air when the waste heat in the chicken house is insufficient, broadening the applicable scenarios of the device. One end of the natural air connecting pipe 7 is sealed and fixedly connected to a second filter screen 8. The second filter screen 8 is a stainless steel woven mesh, used to filter dust and debris in the outside air and protect the internal pipes and components. Valves 9 are fixedly connected to the outer periphery of both the first delivery pipe 3 and the natural air connecting pipe 7. Valves 9 are manual sealing ball valves, used to control the on / off of the two air sources and adjust the air volume, so as to realize the flexible switching between waste heat and natural air in the chicken house and ensure that the device can operate stably under different seasons and different waste heat conditions.

[0024] Please see the appendix Figure 3 -Appendix Figure 4In a preferred embodiment of the present invention, the collection and cleaning assembly 4 includes a collection cover 41, the bottom of which is fixed to one end of the first conveying pipe 3. A first filter screen 42 is fixedly connected inside the collection cover 41. A reciprocating screw 43 is rotatably connected inside the collection cover 41. Two sliders 44 are slidably connected inside the collection cover 41. One slider 44 is threaded to the outer periphery of the reciprocating screw 43. A cleaning brush 45 is rotatably connected between the sliders 44. The cleaning brush 45 contacts the surface of the first filter screen 42. A fixing cover 46 is fixedly connected to the outside of the collection cover 41. Inside the fixing cover 46... A fan blade 47 is rotatably connected to the part. One end of the fan blade 47 is fixedly connected to one end of the reciprocating screw 43. A first air supply pipe 48 is fixedly connected to the outside of the fixed cover 46. The other end of the first air supply pipe 48 is fixedly connected to the second conveying pipe 10. A waste bin 49 is fixedly connected to the outside of the collection cover 41. A second air supply pipe 410 is fixedly connected to the outside of the fixed cover 46. The other end of the second air supply pipe 410 is fixedly connected to the inside of the collection cover 41. A sewage discharge trough is opened in the collection cover 41 corresponding to the position of the waste bin 49. The sewage discharge trough is connected to the waste bin 49. A drawer is slidably connected inside the waste bin 49.

[0025] Specifically, a portion of the airflow generated by the fan 2 during operation is diverted to the interior of the fixed cover 46 via the first air supply pipe 48, which is sealed and connected to the second delivery pipe 10. The first air supply pipe 48 is a high-temperature resistant plastic hose used to divert a small portion of the airflow to provide driving power, achieving the effect of not affecting the main airflow delivery. The airflow impacts the fan blade 47, causing it to rotate. The fan blade 47 is an engineering plastic blade used to convert airflow kinetic energy into rotational mechanical energy. The fan blade 47 is coaxially fixedly connected to the reciprocating screw 43 via a coupling, thereby driving the reciprocating screw 43 to rotate synchronously. The thread on the outer circumference of the reciprocating screw 43 drives the threaded slider 44 to slide back and forth along the length of the screw. The slider 44 cooperates with the reciprocating screw 43 to perform linear reciprocating motion, achieving the effect of moving the cleaning brush 45. The slider 44 drives the cleaning brush 45 to rub back and forth on the surface of the first filter screen 42. The cleaning brush 45 is a soft nylon brush body used to clean impurities without damaging the filter screen, achieving the effect of continuously cleaning the filter screen. The impurities intercepted on the filter screen are swept to the corresponding drain position of the collection hood 41. The impurities slide down the drain to the inside of the outer waste bin 49. The waste bin 49 is equipped with a pull-out dust collection drawer for centralized collection of impurities, facilitating regular cleaning. Workers can periodically pull out the drawer in the waste bin 49 to clean it. The remaining airflow after driving the fan blades 47 flows back to the inside of the collection hood 41 through the second air supply pipe 410. The second air supply pipe 410, in conjunction with the fixed cover 46, performs airflow recirculation, achieving airflow recycling and avoiding energy loss. The waste heat airflow filtered by the first filter screen 42 is transported to the heat collection chamber 51 inside the collection box 1 through the second conveying pipe 10. The second conveying pipe 10 is an insulated metal pipe used to transport clean waste heat airflow and reduce heat loss. The heat collection chamber 51 is used to temporarily store the airflow and provide space for temperature equalization, achieving a stable entry into the subsequent preheating stage.

[0026] Please see the appendix Figure 5 -Appendix Figure 6 In a preferred embodiment of the present invention, the preheating component 5 includes a heat collection chamber 51 and baffles 52. The heat collection chamber 51 is opened inside the collection box 1, and the baffles 52 are fixedly connected inside the heat collection chamber 51. A condensate collection chamber 53 is opened inside the collection box 1. A tapered guide pipe 54 is fixedly connected to one side of the collection box 1, and a preheating cylinder 55 is fixedly connected to the other end of the tapered guide pipe 54. An inner cylinder 57 is fixedly connected inside the preheating cylinder 55, and a spiral guide plate 56 is fixedly connected to the outer periphery of the inner cylinder 57. A third gas supply pipe 58 is fixedly connected to the top of the preheating cylinder 55, and a gas outlet pipe 59 is fixedly connected to the top of the inner cylinder 57. A heat pump 11 is fixedly connected to the other end of the gas outlet pipe 59. Multiple baffles 52 are provided, and the multiple baffles 52 are arranged in an alternating vertical arrangement.

[0027] Specifically, the waste heat airflow filtered by the first filter screen 42 is sealed and transported to the heat collection chamber 51 inside the collection box 1 through the second conveying pipe 10. The second conveying pipe 10 is a heat-insulated galvanized steel pipe, used to seal and transport clean airflow to reduce heat leakage. The airflow comes into contact with the baffles 52 in the heat collection chamber 51. The baffles 52 are stainless steel wear-resistant strips, used to change the airflow direction and create disturbance. Since there are multiple baffles 52 arranged in an alternating pattern, the airflow forms turbulent motion between the alternating baffles 52. The baffles 52 work with the heat collection chamber 51 to perform turbulent mixing motion, achieving the effect of quickly dispersing the high temperature zone and the low temperature zone. The system effectively disperses the high-temperature and low-temperature zones, achieving uniform temperature treatment of waste heat and eliminating local temperature differences. During this process, the condensate generated slides down the inclined angle of the baffle 52 and eventually falls into the condensate collection chamber 53 below. The condensate collection chamber 53 is used to collect the condensate, preventing water accumulation from affecting heat exchange and maintaining a dry and stable internal operation. The uniformly heated airflow is guided by the conical guide tube 54 and enters the preheating cylinder 55. The conical guide tube 54 is a tapered flow guide structure used to transition the airflow and reduce flow resistance. The airflow flows along the spiral channel formed by the spiral guide plate 56 between the preheating cylinder 55 and the inner cylinder 57. The spiral guide plate 56 is a stainless steel spiral plate used to extend the residence time of the airflow. During the process, the airflow continuously exchanges heat with the inner wall of the preheating cylinder 55. The spiral guide plate 56 works in conjunction with the preheating cylinder 55 and the inner cylinder 57 to perform a spiral propulsion motion, achieving the effect of extending the heat exchange time and gradually increasing the airflow temperature, realizing a stepped heating and completing the initial preheating treatment of waste heat.

[0028] Heat pump 11 uses a low-temperature air source heat pump, which is suitable for the waste heat conditions in chicken houses. It is used to regulate the temperature and dehumidify the hot air. The staff can control the start and stop of heat pump 11 according to the actual needs of the drying process: if the temperature and humidity of the hot air meet the drying requirements, heat pump 11 is turned off and the hot air is directly delivered to the dryer; if the hot air needs to be further dehumidified and heated, heat pump 11 is started to process the hot air and then delivered to the dryer to complete the entire heat source supply process.

[0029] Please see the appendix Figure 7 -Appendix Figure 8In a preferred embodiment of the present invention, the waste heat recovery assembly 6 includes a lower cylinder 61, which is disposed at the bottom of the preheating cylinder 55. A first guide shroud 62 is fixedly connected inside the lower cylinder 61, and a second guide shroud 63 is fixedly connected above the first guide shroud 62. A through hole 64 is provided inside the second guide shroud 63. A plurality of ceramic discs 65 are fixedly connected inside the lower cylinder 61, and a first connecting pipe 66 is fixedly connected to the bottom of the lower cylinder 61. The other end of the first connecting pipe 66 communicates with the condensate collection chamber 53. The heat recovery assembly 6 also includes an upper cylinder 67, which is fixedly connected to the top of the lower cylinder 61. A first flow equalization vane 69 is fixedly connected inside the upper cylinder 67, and a second flow equalization vane 610 is fixedly connected inside the upper cylinder 67. A second connecting pipe 68 is fixedly connected to the outside of the lower cylinder 61, and the other end of the second connecting pipe 68 is connected to the upper cylinder 67. The upper cylinder 67 is connected to the bottom of the inner cylinder 57. The blades of the first flow equalization vane 69 are horizontally arranged, and the blades of the second flow equalization vane 610 are inclinedly arranged above the first flow equalization vane 69.

[0030] Specifically, the preheated airflow is sealed and transported to the lower cylinder 61 of the waste heat recovery component 6 via the third air supply pipe 58. The third air supply pipe 58 is a seamless insulated steel pipe used to transport the preheated airflow in a sealed manner to reduce heat loss. The airflow first contacts the first guide shroud 62, which is a stainless steel conical structure used to gather the airflow and prevent it from spreading along the wall. It works in conjunction with the lower cylinder 61 to perform a central guiding motion, thereby reducing heat loss and improving airflow utilization.

[0031] As the airflow moves upward, it passes through the second guide shroud 63 and then flows into the upper cylinder 67 through the ceramic discs 65. The ceramic discs 65 are made of porous energy-storing ceramic material and are stacked horizontally and equidistantly in multiple layers to absorb and store residual heat. The multi-layered horizontal stacked structure of the ceramic discs 65 can absorb and store the heat in the airflow, achieving deep heat storage treatment of residual heat. At the same time, some of the heat stored in the ceramic discs 65 will be conducted in reverse through the through holes 64 to the gap between the first guide shroud 62 and the second guide shroud 63, forming residual heat airflow. The through holes 64 are used to balance the pressure of the upper and lower airflows and conduct residual heat, achieving the effect of fully recovering dissipated heat.

[0032] The residual heat airflow is sealed and transported to the interior of the upper cylinder 67 through the second connecting pipe 68. The second connecting pipe 68 is used to guide and recover the residual heat airflow for secondary utilization, and it merges with the rising airflow passing through the ceramic disc 65. The merged airflow passes sequentially through the first flow equalization vane 69 and the second flow equalization vane 610. Both the first flow equalization vane 69 and the second flow equalization vane 610 are stainless steel rectifier blades used to regulate the airflow and eliminate turbulence. The horizontally set first flow equalization vane 69 eliminates airflow eddies, making the airflow distribution more uniform. The inclined second flow equalization vane 610 further disperses the airflow clusters. At the same time, the residual heat airflow is fully mixed with the main hot air to compensate for local temperature differences. The first flow equalization vane 69 and the second flow equalization vane 610 perform staged rectification motion, achieving a uniform temperature and stable airflow output effect, and finally achieving staged temperature stabilization and outputting hot air with a uniform and stable temperature.

[0033] The method of using a heat source supply device for a composite low-temperature dryer described below can be referred to in correspondence with the method of using an intelligent workstation for argon arc welding described above.

[0034] The present invention also provides a method for using a heat source supply device for a composite low-temperature dryer, comprising the following steps: S1. According to seasonal needs, open or close valve 9, and use fan 2 to draw natural air heat or chicken house waste heat through natural air connecting pipe 7 or collection hood 41. When using natural air connecting pipe 7, the air enters the heat collection chamber 51 directly after passing through the second filter screen 8. When using chicken house waste heat, the waste heat passes through the first filter screen 42 inside the collection hood 41. The first filter screen 42 intercepts impurities such as chicken feathers and dust in the waste heat. The filtered waste heat is transported to the heat collection chamber 51 through the first conveying pipe 3. S2. When the fan 2 is working, part of the airflow is diverted to the inside of the fixed cover 46 through the first air supply pipe 48, which blows the fan blade 47 to rotate. The fan blade 47 drives the reciprocating screw 43 to rotate synchronously. The reciprocating screw 43 drives the cleaning brush 45 to reciprocate to clean the surface of the first filter screen 42 through the slider 44. The cleaned impurities fall into the waste bin 49. The airflow after driving the fan blade 47 is sent back to the collection cover 41 through the second air supply pipe 410 to realize airflow circulation. S3. The residual heat entering the heat collection chamber 51 is uniformly treated by multiple staggered baffles 52, and then enters the preheating cylinder 55 through the conical guide tube 54. It flows along the spiral guide plate 56 on the inner wall of the preheating cylinder 55 to achieve step heating. The heated airflow is transported to the lower cylinder 61 through the third air supply pipe 58. S4. The airflow entering the lower cylinder 61 is guided towards the center by the first guide shroud 62, and then flows upward through the second guide shroud 63, passing through multiple ceramic discs 65. The ceramic discs 65 absorb and store some heat. Then the airflow continues to rise and enters the upper cylinder 67. The heat absorbed by the ceramic discs 65 enters between the first guide shroud 62 and the second guide shroud 63 through the through hole 64 on the second guide shroud 63, and also enters the upper cylinder 67 through the second connecting pipe 68, mixing with the airflow delivered by the second connecting pipe 68. The airflow then passes through the first equalizing vane 69 and the second equalizing vane 610 for temperature equalization treatment, achieving graded temperature stabilization. S5. The hot air after temperature stabilization is delivered to the heat pump 11 through the inner cylinder 57 and the air outlet pipe 59. The heat pump 11 is started or stopped according to the drying requirements. The heat pump 11 further dehumidifies and heats the hot air before delivering it to the dryer to complete the heat source supply. S6. Periodically remove the drawer inside the waste bin 49 to clean up impurities, and at the same time, periodically clean the condensate in the condensate collection chamber 53 to ensure the normal operation of the device.

[0035] The method in this embodiment can be used to execute the above-described device embodiment, and its principle and technical effects are similar, so they will not be repeated here.

[0036] Working principle: After the device is started, the fan 2 is connected to the collection and cleaning component 4 through the first conveying pipe 3, actively extracting the residual heat airflow inside the chicken house. According to the sufficiency of residual heat in the chicken house and seasonal needs, the heat source can be switched by adjusting the valve 9 on the first conveying pipe 3 and the natural air connecting pipe 7. If there is sufficient residual heat in the chicken house, close the valve 9 corresponding to the natural air connecting pipe 7. The residual heat in the chicken house enters through the collection cover 41 and passes through the first filter 42 inside it. The first filter 42 intercepts solid impurities such as chicken feathers and dust mixed in the residual heat, thus achieving purification. If the residual heat in the chicken coop is insufficient, open the valve 9 corresponding to the natural air connecting pipe 7. Outside natural air will enter after being filtered by the second filter screen 8, thus supplementing the heat source.

[0037] Meanwhile, part of the airflow generated when the fan 2 is working is diverted to the inside of the fixed cover 46 through the first air supply pipe 48 connected to the second conveying pipe 10. The airflow impacts the fan blade 47, causing it to rotate. The fan blade 47 is connected to the reciprocating screw 43, which in turn drives the reciprocating screw 43 to rotate synchronously. The thread on the outer circumference of the reciprocating screw 43 drives the slider 44, which is threadedly connected to it, to slide back and forth along the length of the screw. The slider 44 drives the cleaning brush 45 to rub back and forth on the surface of the first filter screen 42, cleaning the impurities intercepted on the filter screen to the corresponding sewage discharge trough position of the collection cover 41. The impurities slide down the sewage discharge trough to the inside of the outer waste bin 49. The staff can periodically pull out the drawer in the waste bin 49 to clean it. The remaining airflow after driving the fan blade 47 flows back to the inside of the collection cover 41 through the second air supply pipe 410.

[0038] The waste heat airflow, filtered by the first filter screen 42, is transported to the heat collection chamber 51 inside the collection box 1 through the second conveying pipe 10. The airflow comes into contact with the baffles 52 inside the heat collection chamber 51. Since there are multiple baffles 52 arranged in an alternating pattern, the airflow forms turbulent motion between the alternating baffles 52, effectively dispersing the high-temperature zone and the low-temperature zone, achieving uniform temperature treatment of waste heat, and eliminating local temperature differences. The condensate generated in this process slides down with the tilt angle of the baffles 52 and eventually falls into the condensate collection chamber 53 below.

[0039] After being heated to a uniform temperature, the airflow is guided by the conical guide tube 54 and enters the interior of the preheating cylinder 55. The airflow flows along the spiral channel formed by the spiral guide plate 56 between the preheating cylinder 55 and the inner cylinder 57. During the process, the airflow continuously exchanges heat with the inner wall of the preheating cylinder 55, achieving stepwise heating and completing the preliminary preheating treatment of waste heat.

[0040] After being preheated in stages, the airflow is transported through the third air supply pipe 58 to the interior of the lower cylinder 61 of the waste heat recovery component 6. The airflow first contacts the first guide shroud 62, which is a conical structure that guides the airflow toward the center of the cylinder to prevent the airflow from spreading along the cylinder wall and causing heat loss.

[0041] When the airflow flows upward, it passes through the second guide shroud 63, and then flows into the upper cylinder 67 through the ceramic disc 65. The ceramic disc 65 has a multi-layer horizontal stacked structure, which can absorb and store the heat in the airflow, realizing deep heat storage treatment of waste heat. At the same time, some of the heat stored in the ceramic disc 65 will be conducted in reverse through the through hole 64 to the gap between the first guide shroud 62 and the second guide shroud 63, forming residual waste heat airflow.

[0042] The residual heat airflow is transported to the interior of the upper cylinder 67 through the second connecting pipe 68, where it merges with the rising airflow passing through the ceramic disc 65. The merged airflow then passes sequentially through the first flow equalization vane 69 and the second flow equalization vane 610. The horizontally positioned first flow equalization vane 69 eliminates airflow eddies, making the airflow distribution more uniform, while the inclined second flow equalization vane 610 further disperses the airflow clusters. At the same time, the residual heat airflow is fully mixed with the main hot air, compensating for local temperature differences, and ultimately achieving staged temperature stabilization, resulting in a uniform and stable output of hot air.

[0043] After being graded and stabilized at a stable temperature, the hot air enters the inner cylinder 57, flows upward along the inner cylinder 57, and is delivered to the heat pump 11 via the air outlet pipe 59. The operator can control the start and stop of the heat pump 11 according to the actual needs of the drying process. If the hot air temperature and humidity meet the drying requirements, turn off heat pump 11 and the hot air is directly delivered to the dryer. If the hot air needs further dehumidification and heating, heat pump 11 is started to process the hot air before it is delivered to the dryer to complete the entire heat source supply process.

[0044] During the operation of the device, condensate will be generated in the low-temperature contact parts such as the preheating cylinder 55 and the lower cylinder 61. The condensate at the bottom of the lower cylinder 61 is guided to the condensate collection chamber 53 at the bottom of the collection box 1 through the first connecting pipe 66, so as to realize the centralized collection of condensate. The staff can clean it regularly to avoid the condensate residue affecting the heat exchange efficiency of the device and ensure the long-term stable operation of the device.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat source supply device for a composite low-temperature dryer, comprising a collection box (1), characterized in that, A fan (2) is provided on one side of the collection box (1). The input end of the fan (2) is connected to a first conveying pipe (3). The other end of the first conveying pipe (3) is provided with a collection and cleaning component (4). The collection and cleaning component (4) is used to extract the waste heat of the chicken house and transport it to the collection box (1). The output end of the fan (2) is fixedly connected to a second conveying pipe (10). The other end of the second conveying pipe (10) is connected to the inside of the collection box (1). A preheating component (5) is provided on the other side of the collection box (1). The preheating component (5) is used to preheat the waste heat evenly and in stages. A waste heat recovery component (6) is provided at the bottom of the preheating component (5). The waste heat recovery component (6) is used to store and stabilize the preheated waste heat.

2. The heat source supply device for the composite low-temperature dryer according to claim 1, characterized in that, The collection and cleaning assembly (4) includes a collection cover (41), the bottom of which is fixed to one end of the first conveying pipe (3). A first filter screen (42) is fixedly connected inside the collection cover (41). A reciprocating screw (43) is rotatably connected inside the collection cover (41). Two sliders (44) are slidably connected inside the collection cover (41). One slider (44) is threaded to the outer periphery of the reciprocating screw (43). A cleaning brush (45) is rotatably connected between the sliders (44). The cleaning brush (45) contacts the surface of the first filter screen (42). A fixed cover (46) is fixedly connected to the outside of the fixed cover (46), and a fan blade (47) is rotatably connected inside the fixed cover (46). One end of the fan blade (47) is fixedly connected to one end of the reciprocating screw (43). A first air supply pipe (48) is fixedly connected to the outside of the fixed cover (46), and the other end of the first air supply pipe (48) is fixedly connected to the second conveying pipe (10). A waste bin (49) is fixedly connected to the outside of the collection cover (41), and a second air supply pipe (410) is fixedly connected to the outside of the fixed cover (46). The other end of the second air supply pipe (410) is fixedly connected inside the collection cover (41).

3. The heat source supply device for the composite low-temperature dryer according to claim 2, characterized in that, The collection cover (41) has a drain trough at the position corresponding to the waste bin (49), the drain trough is connected to the waste bin (49), and the waste bin (49) has a drawer slidably connected inside.

4. The heat source supply device for the composite low-temperature dryer according to claim 1, characterized in that, The preheating component (5) includes a heat collection chamber (51) and a baffle (52). The heat collection chamber (51) is located inside the collection box (1). The baffle (52) is fixedly connected inside the heat collection chamber (51). A condensate collection chamber (53) is located inside the collection box (1). A tapered guide pipe (54) is fixedly connected to one side of the collection box (1). A preheating cylinder (55) is fixedly connected to the other end of the tapered guide pipe (54). An inner cylinder (57) is fixedly connected inside the preheating cylinder (55). A spiral guide plate (56) is fixedly connected to the outer periphery of the inner cylinder (57). A third gas supply pipe (58) is fixedly connected to the top of the preheating cylinder (55). An outlet pipe (59) is fixedly connected to the top of the inner cylinder (57). A heat pump (11) is fixedly connected to the other end of the outlet pipe (59).

5. The heat source supply device for the composite low-temperature dryer according to claim 4, characterized in that, The baffle (52) is provided in multiple ways, and the multiple baffles (52) are arranged in an alternating vertical arrangement.

6. The heat source supply device for the composite low-temperature dryer according to claim 4, characterized in that, The waste heat recovery assembly (6) includes a lower cylinder (61), which is located at the bottom of the preheating cylinder (55). A first guide shroud (62) is fixedly connected inside the lower cylinder (61), and a second guide shroud (63) is fixedly connected above the first guide shroud (62). A through hole (64) is opened inside the second guide shroud (63). Multiple ceramic discs (65) are fixedly connected inside the lower cylinder (61), and a first connecting pipe (66) is fixedly connected to the bottom of the lower cylinder (61). The other end of the first connecting pipe (66) is connected to the condensate collection chamber (53).

7. The heat source supply device for the composite low-temperature dryer according to claim 6, characterized in that, The waste heat recovery assembly (6) also includes an upper cylinder (67), which is fixedly connected to the top of the lower cylinder (61). A first flow equalization vane (69) is fixedly connected inside the upper cylinder (67), and a second flow equalization vane (610) is fixedly connected inside the upper cylinder (67). A second connecting pipe (68) is fixedly connected to the outside of the lower cylinder (61), and the other end of the second connecting pipe (68) is connected to the upper cylinder (67). The upper cylinder (67) is connected to the bottom of the inner cylinder (57).

8. The heat source supply device for the composite low-temperature dryer according to claim 7, characterized in that, The first flow equalization blade (69) is horizontally positioned, and the second flow equalization blade (610) is inclinedly positioned above the first flow equalization blade (69).

9. The heat source supply device for the composite low-temperature dryer according to claim 1, characterized in that, A natural air communication pipe (7) is fixedly connected to the outside of the first delivery pipe (3), and a second filter screen (8) is fixedly connected to one end of the natural air communication pipe (7). Valves (9) are fixedly connected to the outer periphery of both the first delivery pipe (3) and the natural air communication pipe (7).

10. A method for using the heat source supply device for a composite low-temperature dryer, characterized in that, The composite low-temperature dryer heat source supply device according to any one of claims 1-9 includes the following steps: S1. According to seasonal needs, open or close the valve (9) and use the fan (2) to draw natural air heat or chicken house waste heat through the natural air connecting pipe (7) or the collection hood (41). When using the natural air connecting pipe (7), the air passes through the second filter (8) and directly enters the heat collection chamber (51). When using the chicken house waste heat, the waste heat passes through the first filter (42) inside the collection hood (41). The first filter (42) intercepts chicken feathers, dust and other impurities in the waste heat. The filtered waste heat is transported to the heat collection chamber (51) through the first conveying pipe (3). S2. When the fan (2) is working, part of the airflow is diverted to the inside of the fixed cover (46) through the first air supply pipe (48), which blows the fan blade (47) to rotate. The fan blade (47) drives the reciprocating screw (43) to rotate synchronously. The reciprocating screw (43) drives the cleaning brush (45) to reciprocate to clean the surface of the first filter screen (42) through the slider (44). The impurities that are cleaned fall into the waste bin (49). The airflow after driving the fan blade (47) is sent back to the collection cover (41) through the second air supply pipe (410) to realize airflow circulation. S3. The residual heat entering the heat collection chamber (51) is uniformly treated by multiple staggered baffles (52) and then enters the preheating cylinder (55) through the conical guide tube (54). It flows along the spiral guide plate (56) on the inner wall of the preheating cylinder (55) to achieve step heating. The heated airflow is transported to the lower cylinder (61) through the third gas delivery pipe (58). S4. The airflow entering the lower cylinder (61) is guided towards the center by the first guide shroud (62), and the airflow flows upward through the second guide shroud (63), passing through multiple ceramic discs (65). The ceramic discs (65) absorb and store some heat. Then the airflow continues to rise and enters the upper cylinder (67). The heat absorbed by the ceramic discs (65) enters between the first guide shroud (62) and the second guide shroud (63) through the through hole (64) on the second guide shroud (63), and also enters the upper cylinder (67) through the second connecting pipe (68), mixing with the airflow transported by the second connecting pipe (68). The airflow passes through the first equalizing vane (69) and the second equalizing vane (610) in sequence for temperature equalization treatment, thereby achieving graded temperature stabilization. S5. The hot air after temperature stabilization is delivered to the heat pump (11) through the inner cylinder (57) and the air outlet pipe (59). The heat pump (11) is started or stopped according to the drying requirements. The heat pump (11) further dehumidifies and heats the hot air before delivering it to the dryer to complete the heat source supply. S6. Periodically remove the drawer in the waste bin (49) to clean up impurities, and at the same time, periodically clean the condensate in the condensate collection chamber (53) to ensure the normal operation of the device.

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