Excrement residue drying system

Abstract

The embodiment of the invention discloses an excrement residue drying system. The excrement residue drying system comprises a first bin body; the conveying belt extends in the horizontal direction, is arranged in the inner cavity of the first bin body and is used for conveying manure residues, and a plurality of ventilation holes are formed in the conveying belt; the air inlets are formed in the bottom of the first bin body side by side and are opposite to the conveying belt; the air outlets are formed in the top of the first bin body side by side and are opposite to the conveying belt; the second bin body is communicated with the first bin body; a hot air generating device and a cooling device are arranged in an inner cavity of the second bin body; the hot air generating device comprises a heating coil used for circulating high-temperature water, the heating coil is configured to be used for heating cold air passing through the heating coil and generating hot air, and the hot air enters the first bin body through the multiple air inlets; the cooling device is configured to be used for cooling and condensing the damp and hot air output by the multiple air outlets, condensate water and cold air are generated, and the cold air is conveyed to the hot air generating device and heated through the heating coil.

Description

Technical Field

[0001] The present application relates to the technical field of excrement drying, and more specifically, to an excrement drying system. Background Art

[0002] The moisture content of manure residue after dehydration is between 65% and 80%. The traditional method of dehydration of manure residue is through squeezing and drying. The drying process is greatly affected by the weather and the dehydration is slow. Pathogens grow during the dehydration process and affect the health of cattle after being backfilled into the playground.

[0003] In the prior art, the secondary dehydration and sterilization of feces residue usually uses a drying cylinder, and the temperature of the drying cylinder is between 300℃ and 400℃. When the high temperature is blown, the inside of the drying cylinder is easy to explode, which is very unsafe. In addition, in order to prevent the exhaust gas from being discharged to the outside and polluting the air, exhaust gas treatment is also required. This method not only shortens the life of the drying cylinder, but also has low safety performance and a complex structure. Summary of the invention

[0004] The object of the present invention is to provide a dung residue drying system to solve at least one of the above-mentioned technical problems.

[0005] In order to achieve at least one of the above purposes, the present application adopts the following technical solutions:

[0006] The present application provides a manure residue drying system, comprising a first bin body; a conveyor belt for conveying manure residue and extending in a horizontal direction in an inner cavity of the first bin body, the conveyor belt having a plurality of ventilation holes; a plurality of air inlets arranged side by side at the bottom of the first bin body and opposite to the conveyor belt; a plurality of air outlets arranged side by side at the top of the first bin body and opposite to the conveyor belt;

[0007] A second warehouse body connected to the first warehouse body; a hot air generating device and a cooling device are arranged in the inner cavity of the second warehouse body; the hot air generating device includes a heating coil for circulating high-temperature water, and the heating coil is configured to heat the cold air passing through the heating coil and generate hot air, and the hot air enters the first warehouse body through multiple air inlets; the cooling device is configured to cool and condense the humid hot air output from multiple air outlets to generate condensed water and cold air, and the cold air is transmitted to the hot air generating device and heated by the heating coil.

[0008] Optionally, there are at least two conveyor belts, which are stacked in sequence from top to bottom;

[0009] The feces residue on the upper conveyor belt of two adjacent conveyor belts can fall onto the lower conveyor belt.

[0010] Optionally, a feed inlet is provided on one side edge of the top of the first silo body, and the feed inlet is arranged opposite to a material receiving end of the conveyor belt close to the top of the first silo body;

[0011] A discharge port is arranged on one side edge of the bottom of the first silo body, and the discharge port is arranged opposite to a discharge end of the conveyor belt close to the bottom of the first silo body.

[0012] Optionally, a filter is provided on a side of the air outlet close to the first compartment body.

[0013] Optionally, the manure drying system also includes a circulating fan, which is configured to transmit the hot air generated by the heating coil in the second bin to the first bin, and transmit the humid hot air output by the first bin to the cooling device and the hot air generating device.

[0014] Optionally, the dung residue drying system further comprises a boiler for providing high-temperature water to the heating coil;

[0015] The boiler is communicated with the receiving end of the heating coil through a water inlet pipe, and is communicated with the output end of the heating coil through a water return pipe.

[0016] Optionally, the excrement drying system further comprises a granulator for conveying excrement to the first bin;

[0017] The granulator comprises two squeezing rollers, and the squeezing teeth on the two squeezing rollers are arranged alternately.

[0018] Optionally, the excrement drying system further includes a temperature sensor and a humidity sensor located on the top of the first bin body.

[0019] Optionally, the temperature of the hot air generated by heating the cold air passing through the heating coil is 75°C to 85°C.

[0020] Optionally, the conveyor belt includes a mesh belt for carrying excrement and driving the excrement to move; the mesh belt includes a plurality of ventilation holes.

[0021] The beneficial effects of this application are as follows:

[0022] In view of the problems existing in the current prior art, the present application provides a manure residue drying system, which increases the temperature of the heating coil by passing high-temperature water through the interior of the heating coil, and the cold air passing through the heating coil is heated to form hot air, and the hot air enters the first bin through multiple air inlets. While the manure residue travels on the conveyor belt, strong convection is formed with the hot air to take away the moisture on the manure residue, thereby achieving air drying of the manure residue. The formed humid hot air is output to the second bin through multiple air outlets, and the humid hot air is cooled and condensed by a cooling device to generate condensed water and cold air. The cold air is then transmitted to the hot air generating device, heated by the heating coil, and hot air is generated again, and enters the first bin through multiple air inlets. In this way, the air in the first bin and the second bin can be circulated for recycling, and there is no need to transport hot air to the first bin from the outside, and there is no need to perform exhaust gas treatment. This is energy-saving and environmentally friendly, and the service life of the entire manure residue drying system is increased. In addition, the heating coil heats the cold air with high-temperature water, and the temperature of the generated hot air is between 75°C and 85°C. This temperature will not cause dust explosions, greatly improving safety; during the drying process, due to the low temperature of the hot air, the amount of waste gases such as H2S and NH3 generated is greatly reduced, and the small amount of waste gases such as H2S and NH3 generated will be integrated into the condensed water and directly enter the sewage pool. Finally, the sewage pool will be returned to the field for use, without generating polluted wastewater and no odor overflow. The manure residue drying system provided in this application can dry manure residue with a moisture content of 65% to 80% to a moisture content of 15% to 40%. There is no waste gas or waste emission in the whole process, and the manure residue can be input and output at the same time. The whole system runs automatically without human intervention, and can always meet the use needs of the ranch. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0024] Figure 1 A schematic diagram of the overall structure of a dung residue drying system in one embodiment of the present application is shown.

[0025] Figure 2 A front view of a pelletizer in a manure residue drying system in one embodiment of the present application is shown.

[0026] Figure 3 A side view of a pelletizer in a manure residue drying system in one embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] In the following description, for the purpose of explanation, in order to provide a thorough understanding of one or more embodiments, numerous specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details.

[0028] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0029] It should also be noted that, in the description of the present application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprise one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0030] In order to solve the problems existing in the prior art, an embodiment of the present application provides a dung residue drying system, such as Figure 1-3As shown, it includes a first bin body 1, the inner wall of the first bin body 1 is provided with an anti-corrosion layer (not shown in the figure); a conveyor belt for conveying feces 10 is arranged in the inner cavity of the first bin body 1 along the horizontal direction, and the conveyor belt has a plurality of ventilation holes; a plurality of air inlets 11 are arranged side by side at the bottom of the first bin body 1 and opposite to the conveyor belt; a plurality of air outlets 12 are arranged side by side at the top of the first bin body 1 and opposite to the conveyor belt; a second bin body 2 connected to the first bin body 1; a hot air generating device and a cooling device 4 are arranged in the inner cavity of the second bin body 2; the hot air generating device includes a The heating coil 3 is passed through high-temperature water, and the heating coil 3 is configured to heat the cold air passing through the heating coil 3 and generate hot air. The hot air enters the first warehouse 1 through multiple air inlets 11, and the temperature of the hot air generated by the cold air heated by the heating coil 3 is 75°C to 85°C; the cooling device 4 is configured to cool and condense the humid hot air output by the multiple air outlets 12 to generate condensed water and cold air. The temperature of the condensed water is 32°C to 37°C, and the temperature of the cold air is 50°C to 55°C. The condensed water is discharged to the sewage pool 41, and the cold air is transmitted to the hot air generating device and heated by the heating coil 3. The cooling device 4 can be a cooling tower.

[0031] In the above-mentioned embodiment of the present application, high-temperature water is passed through the interior of the heating coil 3 to increase the temperature of the heating coil 3, and the cold air passing through the heating coil 3 is heated to form hot air, and the hot air enters the first bin body 1 through multiple air inlets 11. While the feces 10 is moving on the conveyor belt, strong convection is formed with the hot air to take away the moisture on the feces 10, so that the feces 10 is air-dried. The formed humid hot air is output to the second bin body 2 through multiple air outlets 12, and the humid hot air is cooled and condensed by the cooling device 4 to generate condensed water and cold air. The cold air is then transmitted to the hot air generating device, heated by the heating coil 3, and hot air is generated again, and enters the first bin body 1 through multiple air inlets 11. In this way, the air in the first bin body 1 and the second bin body 2 can be circulated for recycling, and there is no need to externally transport hot air to the first bin body 1, and there is no need to perform exhaust gas treatment, which is energy-saving and environmentally friendly, and improves the service life of the entire feces drying system. In addition, the heating coil 3 heats the cold air with high-temperature water, and the temperature of the generated hot air is between 75°C and 85°C. This temperature will not cause dust explosions, greatly improving safety. During the drying process, due to the low temperature of the hot air, the amount of waste gases such as H2S and NH3 generated is greatly reduced. The small amount of waste gases such as H2S and NH3 generated will be integrated into the condensed water and directly enter the sewage pool 41. Finally, the sewage pool 41 is returned to the field for use, and no polluted wastewater is generated, and no odor will overflow. The manure residue drying system provided in this application can dry manure residue 10 with a moisture content of 65% to 80% to a moisture content of 15% to 40%. There is no waste gas or waste emission in the whole process, and the manure residue 10 can be input and output at the same time. The entire system runs automatically without human intervention and can always meet the use needs of the ranch.

[0032] After being dried and sterilized twice at low temperature, the feces residue 10 is used as high-quality bedding, thereby achieving 100% recycling of feces and sewage without polluting the environment.

[0033] In a specific embodiment, there are at least two conveyor belts, which are stacked from top to bottom; the feces 10 on the upper conveyor belt of the two adjacent conveyor belts can fall onto the lower conveyor belt. The arrangement of multiple conveyor belts can blow air to the feces 10 multiple times. Since the air inlet 11 is at the bottom of the first bin body 1, the moisture content of the feces 10 on the lower conveyor belt can be minimized after blowing air. Preferably, there are three conveyor belts, which are the first conveyor belt, the second conveyor belt and the third conveyor belt from top to bottom. The receiving end of the first conveyor belt is used to receive the feces 10 transported from the outside to the first bin body 1. The feces 10 is transported to the discharge end of the first conveyor belt through the first conveyor belt, and falls from the discharge end of the first conveyor belt to the receiving end of the second conveyor belt. The feces 10 is transported to the discharge end of the second conveyor belt through the second conveyor belt, and falls from the discharge end of the second conveyor belt to the receiving end of the third conveyor belt. The feces 10 is transported to the discharge end of the third conveyor belt through the third conveyor belt, and is transported to the outside from the discharge end.

[0034] Furthermore, a feed inlet (not marked in the figure) is provided on one side edge of the top of the first warehouse body 1, and the feed inlet is arranged opposite to a receiving end of the conveyor belt near the top of the first warehouse body 1; a discharge port (not marked in the figure) is provided on one side edge of the bottom of the first warehouse body 1, and the discharge port is arranged opposite to a discharge end of the conveyor belt near the bottom of the first warehouse body 1. The feces 10 falls through the feed inlet onto a receiving end of the conveyor belt near the top of the first warehouse body 1, i.e., the first conveyor belt, and the feces 10 is transported to a position of a discharge end of the conveyor belt near the bottom of the first warehouse body 1, i.e., the third conveyor belt, which transports the feces 10 to its discharge end, and falls to the position of the discharge port, and is discharged from the first warehouse body 1 through the discharge port.

[0035] In a specific embodiment, the conveyor belt includes a mesh belt (not shown in the figure) for carrying the feces 10 and driving the feces 10 to move; the mesh belt includes a plurality of ventilation holes. The feces 10 is statically spread on the mesh belt, and there is electrostatic friction between the feces 10 and the mesh belt; the mesh belt is driven by the conveyor belt body to move along the extension direction of the conveyor belt, and the ventilation holes are arranged on the mesh belt to improve the air permeability, so that the hot air entering the first bin body 1 from the air inlet 11 can be blown to the feces 10 through the ventilation holes to take away the moisture on the feces 10 and achieve air drying of the feces 10. In actual application, the mesh belt is formed by multiple sub-mesh belts connected by buckles. When a sub-mesh belt is damaged, only a single sub-mesh belt needs to be replaced, which reduces the maintenance cost; the mesh belt is made of PP plastic, which has the function of corrosion resistance.

[0036] In a specific embodiment, a filter screen 121 is provided on one side of the air outlet 12 close to the first bin 1. The filter screen 121 can filter dust and ensure that the hot and humid air outputted from the air outlet 12 to the second bin 2 meets the standard and the dust concentration is less than 60g / m 3 The temperature of manure residue is less than 70℃, which will not affect the system. The environment of the entire drying system is clean and hygienic, and there is no risk of dust flash explosion.

[0037] In a specific embodiment, the manure residue drying system further includes a circulating fan 5 and a micro-negative pressure fan 6, wherein the circulating fan 5 is configured to transmit the hot air generated by the heating coil 3 in the second bin 2 to the first bin 1, and the micro-negative pressure fan 6 is configured to transmit the humid hot air output from the first bin 1 to the cooling device 4 and the hot air generating device. The use of the circulating fan 5 and the micro-negative pressure fan 6 enables the air in the system to circulate back and forth between the first bin 1 and the second bin 2 and be recycled.

[0038] In a specific embodiment, the dung residue drying system also includes a boiler 7 for providing high-temperature water to the heating coil 3; the boiler 7 is connected to the receiving end of the heating coil 3 through the water inlet pipe 71, and is connected to the output end of the heating coil 3 through the return pipe 72. The boiler 7 heats the water to form high-temperature water, and transmits the high-temperature water to the heating coil 3 through the water inlet pipe 71. The heating coil 3 heats the cold air to form hot air. At this time, the water temperature in the heating coil 3 decreases to form low-temperature water, and then the low-temperature water is transmitted to the boiler 7 again through the return pipe 72. The boiler 7 heats the low-temperature water again, and the cycle continues. This method can realize the recycling of water in the boiler 7 and the heating coil 3 without the need to transport water to the system externally. Here, the temperature of the high-temperature water is 90°C to 95°C, and the temperature of the low-temperature water is 60°C to 70°C.

[0039] In a specific embodiment, the excrement drying system further includes a temperature sensor 81 and a humidity sensor 82 located at the top of the first bin body 1. The temperature sensor 81 is used to measure the temperature of the first bin body 1, and the humidity sensor 82 is used to measure the humidity of the first bin body 1. The temperature sensor 81 and the humidity sensor 82 are placed at the top of the first bin body 1, that is, close to the air outlet 12, so that the temperature sensor 81 can measure the temperature of the humid hot air output from the first bin body 1. When the temperature is less than a preset value, the speed of the hot air entering the first bin body 1 is slowed down, and when the temperature is greater than the preset value, the speed of the hot air entering the first bin body 1 is accelerated. The humidity sensor 82 can measure the humidity of the humid hot air output from the first bin body 1. When the humidity is greater than the preset value, the speed of the conveyor belt is slowed down, and the residence time of the excrement 10 on the conveyor belt is prolonged.

[0040] In a specific embodiment, the manure residue drying system further includes a granulator 9 for conveying manure residue 10 to the first bin 1; the granulator 9 includes two squeezing rollers 91, and the squeezing teeth on the two squeezing rollers 91 are arranged staggered with each other. The manure residue 10 enters the granulator 9 through a feeding device. In this process, the feeding device must ensure the amount of manure residue 10 entering the granulator 9 and ensure that the manure residue 10 can be evenly distributed between the two squeezing rollers 91.

[0041] Specifically, the granulator 9 further comprises two oppositely arranged levers 92 located above the two squeezing rollers 91, and the levers 92 are provided with a plurality of teeth 921, and the teeth 921 on the two levers 92 are arranged staggered with each other and rotate in opposite directions, so that the feces 10 entering the granulator 9 can smoothly enter between the two squeezing rollers 91 through the teeth 921 on the two levers 92. When the feces 10 enters between the two squeezing rollers 91, the squeezing process begins, and the two squeezing rollers 91 rotate in opposite directions, so that the pressure on the feces 10 between the two squeezing rollers 91 gradually increases, that is, the feces 10 is squeezed between the two squeezing rollers 91, and the feces 10 is formed after passing through the gap between the two squeezing rollers 91. After being squeezed and formed, the feces 10 can be in strip shape and continuously discharged from the discharge ends of the two squeezing rollers 91. The discharged feces 10 in strip shape has a certain shape and strength, and can maintain its structural stability, which is convenient for subsequent processing. Here, the gap between the two squeezing rollers 91 can be adjusted according to actual conditions, and the squeezing teeth on the two squeezing rollers 91 can also be of different shapes. The shapes and sizes of the feces 10 output by different gaps and squeezing teeth of different shapes are also different. For example, the longitudinal section of the output feces 10 can be circular or rectangular.

[0042] In a specific example, the granulator 9 further includes a first driving motor 93 for driving the two levers 92 to rotate, and a second driving motor 94 for driving the two squeezing rollers 91 to rotate.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A dung residue drying system, characterized in that: include A first bin body; a conveyor belt for conveying feces and waste extending in a horizontal direction and arranged in the inner cavity of the first bin body, the conveyor belt having a plurality of ventilation holes; and a plurality of air inlets arranged side by side at the bottom of the first bin body and arranged opposite to the conveyor belt; A plurality of air outlets arranged side by side on the top of the first bin body and opposite to the conveyor belt; A second warehouse body connected to the first warehouse body; a hot air generating device and a cooling device are arranged in the inner cavity of the second warehouse body; the hot air generating device includes a heating coil for circulating high-temperature water, and the heating coil is configured to heat the cold air passing through the heating coil and generate hot air, and the hot air enters the first warehouse body through multiple air inlets; the cooling device is configured to cool and condense the humid hot air output from multiple air outlets to generate condensed water and cold air, and the cold air is transmitted to the hot air generating device and heated by the heating coil.

2. The manure residue drying system according to claim 1, characterized in that: There are at least two conveyor belts, which are stacked in sequence from top to bottom; The feces residue on the upper conveyor belt of two adjacent conveyor belts can fall onto the lower conveyor belt.

3. The excrement drying system according to claim 2, characterized in that: A feeding port is arranged on one side edge of the top of the first silo body, and the feeding port is arranged opposite to a material receiving end of the conveyor belt close to the top of the first silo body; A discharge port is arranged on one side edge of the bottom of the first silo body, and the discharge port is arranged opposite to a discharge end of the conveyor belt close to the bottom of the first silo body.

4. The excrement drying system according to claim 1, characterized in that: A filter is provided on one side of the air outlet close to the first compartment body.

5. The manure residue drying system according to claim 1, characterized in that: The excrement drying system also includes a circulating fan, which is configured to transmit the hot air generated by the heating coil in the second bin to the first bin, and transmit the humid hot air output by the first bin to the cooling device and the hot air generating device.

6. The manure residue drying system according to claim 1, characterized in that: The dung residue drying system also includes a boiler for providing high-temperature water for the heating coil; The boiler is communicated with the receiving end of the heating coil through a water inlet pipe, and is communicated with the output end of the heating coil through a water return pipe.

7. The excrement drying system according to claim 1, characterized in that: The excrement drying system further comprises a granulator for conveying excrement to the first bin; The granulator comprises two squeezing rollers, and the squeezing teeth on the two squeezing rollers are arranged alternately.

8. The excrement drying system according to claim 1, characterized in that: The excrement drying system also includes a temperature sensor and a humidity sensor located on the top of the first bin body.

9. The excrement drying system according to claim 1, characterized in that: The temperature of the hot air generated by heating the cold air passing through the heating coil is 75°C to 85°C.

10. The excrement drying system according to claim 1, characterized in that: The conveyor belt comprises a mesh belt for carrying excrement and driving the excrement to move; the mesh belt comprises a plurality of ventilation holes.

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