Animal carcass harmless treatment drying machine

Abstract

The invention provides an animal carcass harmless treatment drying machine, which belongs to the technical field of drying and comprises a heating bin, a heating flame path, a cyclic heating layer, a covering type heat conduction oil layer, a covering type heat conduction smoke layer and an internal heat conduction structure. According to the animal carcass innocent treatment drying machine, the covering type heat conduction oil layer and the internal heat conduction structure are matched to form an internal and external dual heating system based on heat conduction oil circulation heating, and the covering type heat conduction smoke layer is arranged in the covering type heat conduction oil layer; the flues in the covering type heat conduction smoke layer are in progressive arrangement in a mode of being symmetrically and directly connected with the heating flame path, and the heating flame path is combined with secondary heating of heat conduction oil in the covering type heat conduction oil layer from the middle part, so that the preheating speed of the heating bin and the overall heating uniformity are remarkably improved, and the drying uniformity and the drying efficiency are integrally and effectively improved; the heat loss and the influence of the heat loss on the drying uniformity and efficiency are reduced, more accurate temperature control can be realized, and the drying treatment capability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying, in particular to a harmless treatment drying machine for animal carcasses. BACKGROUND

[0002] Harmless treatment of animal carcasses is a key link in livestock breeding and public health prevention and control, and its core purpose is to realize resource utilization through industrialization and large-scale processing, prevent environmental pollution and animal disease transmission. In the whole processing flow, the drying process is one of the core processing links, which mainly realizes the killing of pathogens and the effective reduction of water content by high-temperature sterilization and dehydration of animal carcasses in a sealed container. The efficiency and effect of drying treatment not only affect the operation efficiency of the whole harmless treatment system, but also have a decisive influence on the processing quality of the subsequent crushing, grease separation and organic fertilizer preparation environment.

[0003] At present, the existing drying treatment equipment still has great limitations in drying efficiency and effect and heat energy utilization, which makes it difficult to further improve the overall processing capacity. Specifically: 1. The bottom heating type drying equipment has single heating path, and there is a significant space temperature difference in the heat conduction process, which leads to uneven heating of the material and easy occurrence of local overheating and local undrying. At the same time, the preheating time and the overall drying cycle of the bottom heating mode are long, which reduces the processing efficiency, and accelerates the thermal fatigue of the equipment parts due to the local temperature being too high, shortening the service life of the equipment.

[0004] 2. Covering type circulating heating equipment (such as heat conducting oil or high temperature steam circulating heating system, etc.), although it can realize the overall heating of the treatment bin, and can improve the heating efficiency to a certain extent, but there is obvious heat loss in the circulating transmission process, especially in large drying equipment, the circulating path is longer, the heat loss is more serious, which further weakens the uniformity of heat energy transmission, leading to uneven distribution of the overall equipment temperature field, and then causing uneven heating of the material, so that the actual temperature field distribution is difficult to keep consistent with the set parameters, making it difficult to effectively realize the temperature control precision.

[0005] In summary, the existing animal carcass drying treatment technology generally has problems such as insufficient heating uniformity, large heat loss, and difficult to effectively realize temperature control precision, which makes it difficult to further improve the drying treatment capacity. SUMMARY

[0006] The application provides an animal carcass harmless treatment drying machine, which comprises a heating bin, a heating fire channel, a covering heat-conducting oil layer, a covering heat-conducting smoke layer and an internal heat-conducting structure, the heating fire channel is axially arranged at the bottom of the heating bin, and a circulating heating layer is arranged on the heating fire channel, the covering heat-conducting oil layer comprises a heat-conducting oil cavity provided with an oil inlet and an oil outlet, the heat-conducting oil cavity is arranged outside the heating bin, and the bottom area of the heat-conducting oil cavity is located between the heating fire channel and the heating bin; the heating fire channel is used for secondary heating of the heating oil circulating in the middle part of the heat-conducting oil cavity; the covering heat-conducting smoke layer comprises flues arranged on the heating bin and located in the heat-conducting oil cavity, the flues are divided into two groups, symmetrically arranged on the heating bin with the heating fire channel as the symmetric center, the smoke inlets of the flues are communicated with the heating fire channel, and the heating bin is used for heating the flues.

[0007] In a possible implementation manner, the oil inlet and the oil outlet are located at the top of the heating bin, the heat-conducting oil flows downward along the circumference of the heating bin after entering the heat-conducting oil cavity from the oil inlet, then flows upward and finally flows out from the oil outlet, and the oil inlet and the oil outlet are close to two ends of the heating bin respectively.

[0008] In a possible implementation manner, the heat-conducting oil cavity comprises a middle cavity and side cavities symmetrically distributed with the middle cavity as the symmetric center, the middle cavity is located between the heating fire channel and the heating bin, the oil inlet is communicated with one of the side cavities, the oil outlet is connected to another side cavity, and a plurality of partitions are arranged in the side cavities, so that the flow path of the heat-conducting oil is in a reciprocating and bending shape.

[0009] In a possible implementation manner, the double-channel rotary joint comprises a connecting structure provided with flow channel one and flow channel two, the heat-conducting oil enters the central flow channel from the flow channel two, then enters the heat-conducting pipes from the central flow channel, and finally the heat-conducting oil in the heat-conducting pipes enters the flow channel one.

[0010] In a possible implementation manner, the heating bin is provided with a centralized transfer area, the centralized transfer area is provided with a discharge port, the smoke outlets of the flues are communicated with the centralized transfer area, and the centralized transfer area and the smoke inlets are close to the same end of the heating bin.

[0011] In a possible implementation, a negative pressure system is further included, which draws the high-temperature steam in the heating bin to a waste gas treatment system, and the treated waste gas is sent to the heating flue for combustion, and then the gas in the heating flue is drawn out and sent to the tail gas treatment system after passing through the covering heat-conducting oil layer.

[0012] In a possible implementation, the covering heat-conducting oil layer and the circulating heating layer are covered with a heat preservation layer.

[0013] The one or more technical solutions in the embodiments of the present application have at least one of the following technical effects: according to the animal carcass harmless treatment drying machine provided by the embodiments of the present application, the covering heat-conducting oil layer cooperates with the internal heat-conducting structure to form an internal and external double heating system based on the circulating heating of the heat-conducting oil, and the covering heat-conducting oil layer is provided with a covering heat-conducting smoke layer, which heats the heating bin and the covering heat-conducting oil layer by guiding the tail gas in the heating flue, on the one hand, compensates for the heat loss of the entire heating system and improves the heat efficiency, on the other hand, the symmetrically arranged flues cooperate with the covering heat-conducting oil layer, which not only significantly improves the preheating speed of the heating bin, but also the flues symmetrically arranged and directly connected with the heating flue further heat the heat-conducting oil in the covering heat-conducting oil layer by the secondary heating of the heat-conducting oil in the middle, on the basis of reducing the heat loss, further compensating for the heat loss, significantly improving the uniformity of the overall heating, effectively improving the uniformity and efficiency of the drying, reducing the heat loss and the influence of the heat loss on the uniformity and efficiency of the drying, and facilitating more precise temperature control, improving the drying treatment capacity, and the internal heat-conducting structure adopts a spiral arrangement of multiple heat-conducting pipes for heating, and the stirring and pushing are combined with the push plates, which further improves the uniformity and efficiency of the heating bin. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a first perspective view of the overall structure of the animal carcass harmless treatment drying machine provided by the embodiments of the present application.

[0015] Figure 2 is a second perspective view of the overall structure of the animal carcass harmless treatment drying machine provided by the embodiments of the present application.

[0016] Figure 3 is a first perspective view of the overall structure of the animal carcass harmless treatment drying machine provided by the embodiments of the present application.

[0017] Figure 4 is a structure diagram of the centralized transfer area of the animal carcass harmless treatment drying machine provided by the embodiments of the present application.

[0018] Figure 5It is a kind of heating bin, heating fireway, circulating heating layer and the structure diagram of heat conducting oil cavity of animal carcass harmless treatment dry machine provided by the embodiment of the application.

[0019] Figure 6 It is a kind of structure diagram of flue of animal carcass harmless treatment dry machine provided by the embodiment of the application.

[0020] Figure 7 It is a kind of structure diagram of heat conducting pipeline of animal carcass harmless treatment dry machine provided by the embodiment of the application.

[0021] Figure 8 It is a kind of structure diagram of flow passage one, flow passage two and center flow passage of animal carcass harmless treatment dry machine provided by the embodiment of the application.

[0022] Figure 9 It is a kind of schematic diagram of heat conducting oil flow path in side cavity of animal carcass harmless treatment dry machine provided by the embodiment of the application.

[0023] In the figure: 1, heating bin; 2, heating fireway; 3, circulating heating layer; 4, oil inlet; 5, oil outlet; 6, heat conducting oil cavity; 61, middle cavity; 62, side cavity; 63, partition; 64, flow passage; 7, flue; 8, smoke inlet; 9, double-channel rotary joint; 91, flow passage one; 92, flow passage two; 93, connecting structure; 10, main shaft; 11, heat conducting pipeline; 12, push plate; 13, centralized transfer area; 14, discharge outlet; 15, smoke outlet; 16, center flow passage; 17, heat preservation layer. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from the following description, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 , a kind of animal carcass harmless treatment dry machine, including heating bin 1 and heating fireway 2, heating fireway 2 is arranged in the bottom of heating bin 1 along the axial direction of heating bin 1, heating fireway 2 is covered with circulating heating layer 3 (such as Figure 5As shown), the heat transfer oil is quickly heated by the circulating heating layer 3, and a covering heat transfer smoke layer and a covering heat transfer oil layer are provided on the heating chamber 1. The covering heat transfer smoke layer is located inside the covering heat transfer oil layer. Figure 5 and Figure 6 As shown, the covered heat-conducting smoke layer includes a number of flues 7, which are divided into two groups and are symmetrically distributed on the left and right and covered on the heating chamber 1. Among them, the smoke inlets 8 of the flues 7 are directly connected to the heating fire channel 2, so that the exhaust gas in the heating fire channel 2 is discharged from the equipment through the flues 7 and subsequently passes through the exhaust gas treatment system to meet the emission standards. During the exhaust gas discharge through the flues 7, the heating chamber 1 and the covered heat-conducting oil layer are heated, which can quickly heat the heating chamber 1 and significantly shorten the preheating time. The covered heat-conducting oil layer includes a heat-conducting oil chamber 6 (such as Figure 3 As shown, the heat transfer oil chamber 6 includes a middle chamber 61 and side chambers 62 symmetrically distributed on the left and right (as shown Figure 5 As shown), the flue 7 on the left is located in the side cavity 62 on the left, the flue 7 on the right is located in the side cavity 62 on the right, the middle cavity 61 is connected between the left and right side cavities 62, the oil inlet 4 is connected to the side cavity 62 on the right, and the oil outlet 5 is connected to the side cavity 62 on the left. The heat transfer oil enters the side cavity 62 on the right from the oil inlet 4 and then enters the side cavity 62 on the left after passing through the middle cavity 61, and then flows out from the oil outlet 5. The middle cavity 61 is located between the heating fire channel 2 and the heating bin 1. On the one hand, it separates the heating fire channel 2 from the heating bin 1 to prevent the heating fire channel 2 from directly heating the heating bin 1 and affecting the heating uniformity and service life of the heating bin 1. On the other hand, the heating fire channel 2 The heat transfer oil in the covering heat transfer oil layer is secondary heated from the middle to compensate for the heat loss of the heat transfer oil during the circulation process and improve the uniformity of the heat transfer oil heating. The covering heat transfer smoke layer and the covering heat transfer oil layer are heated in coordination with each other, and the covering heat transfer smoke layer is used to quickly heat the heating chamber 1 and the covering heat transfer oil layer. At the same time, the covering heat transfer oil layer is used to effectively reduce the heat loss of the covering heat transfer smoke layer during the heat transfer process, which significantly improves the preheating speed of the heating chamber 1 as well as the uniformity and stability of the heating, effectively reduces the heat loss and the influence of the heat loss on the heating uniformity, improves the drying efficiency, thereby optimizing the drying effect and achieving more precise temperature control, thereby improving the comprehensive ability of harmless treatment of animal carcasses.

[0026] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8The heating bin 1 is provided with an internal heat conduction structure. The internal heat conduction structure utilizes heat conduction oil to heat from the inside of the heating bin 1, and in combination with the external covering heat conduction oil layer and the covering heat conduction smoke layer, forms a double heating system of inside and outside, sufficiently improves the efficiency and effect of drying, and in combination with Figure 7 and Figure 8 As shown, the internal heat conduction structure includes a main shaft 10 provided with a central flow channel 16, the main shaft 10 is rotatably installed on the heating bin 1, and the front end of the main shaft 10 is connected with a double-channel rotary joint 9, the double-channel rotary joint 9 is connected with the main shaft 10 through a heat conduction pipeline 11, the number of the heat conduction pipeline 11 is three and arranged in a spiral shape in the heating bin 1, as shown in Figure 8 The double-channel rotary joint 9 includes a connecting structure 93 provided with a flow channel one 91 and a flow channel two 92, the flow channel one 91 and the flow channel two 92 are independent of each other, and the flow channel two 92 is connected with the central flow channel 16 through an oil pipe (not shown in the figure) and constitutes an oil inlet path, the flow channel one 91 is directly connected with the front end of the heat conduction pipeline 11 and constitutes an oil outlet path, the oil inlet path and the oil outlet path are independent of each other and do not interfere with each other, and the specific circulation path is: the hot oil enters the central flow channel 16 from the front end through the flow channel two 92, then enters the heat conduction pipeline 11 from the rear end of the central flow channel 16, the heat is transmitted through the heat conduction pipeline 11 in a spiral direction, further improving the uniformity of heating of the heating bin 1, then the heat conduction oil uniformly enters the flow channel one 91, the flow channel one 91 is connected with the oil inlet 4 through a connecting pipeline (as shown in Figure 4 The heat conduction oil enters the right side cavity 62 from the oil inlet 4, then enters the left side cavity 62 after passing through the middle cavity 61 (as shown in Figure 5 The heat conduction oil then flows out from the oil outlet 5 into the circulating heating layer 3 (as shown in Figure 2 The heat conduction oil then flows out from the oil outlet 5 into the circulating heating layer 3 (as shown in

[0027] Referring to Figure 5 and Figure 7 The heat conduction pipeline 11 is welded with a paddle 12, the paddle 12 is distributed in a spiral shape, during the drying process, with the rotation of the main shaft 10, the paddle 12 stirs and turns the material, further improving the efficiency and uniformity of material drying, and with the forward rotation of the main shaft 10, the material is gathered to one end of the heating bin 1 to produce a squeezing effect, in the early stage of drying, the efficiency of drying is improved, and with the reverse rotation of the main shaft 10, the material moves and gathers to the other end, and the process is repeated, further improving the efficiency of drying, and in the process of discharging the material, the material can be discharged from the main machine by reversing, improving the efficiency of discharging and the efficiency of continuous drying.

[0028] Referring to Figure 5 and Figure 9The side cavity 62 is provided with a plurality of partitions 63, which divide the space in the side cavity 62 to make the flow path of the heat conducting oil in a reciprocating bending shape. As shown in Figure 9 , the heating oil enters the side cavity 62 from the oil inlet 4, and flows along the path line in the direction shown by the arrow in the figure, which is beneficial to further improve the uniformity of heating. The right front side and the left rear side of the middle cavity 61 are provided with flow-through openings 64. The heating oil in the right side cavity 62 enters the middle cavity 61 from the flow-through opening 64 on the right front side (as shown in Figure 5 ), and then enters the left side cavity 62 from the flow-through opening 64 on the left rear side.

[0029] Referring to Figure 1 and Figure 5 , the circulating heating layer 3 and the covering heat conducting oil layer are provided with a heat preservation layer 17, which reduces heat loss and prevents high temperature scalding.

[0030] Referring to Figure 3 , Figure 4 , Figure 5 and Figure 6 , the heating bin 1 is provided with a centralized transfer area 13, and the centralized transfer area 13 is provided with a discharge port 14. The smoke outlets 15 of the flues 7 are in communication with the centralized transfer area 13, which facilitates the centralized discharge of waste gas. The centralized transfer area 13 and the smoke inlet 8 are close to the same end of the heating bin 1, so that the flow path of the waste gas is more compact and reasonable. By symmetrically arranging a plurality of flues 7 on both sides of the heating bin 1, the flow path of the flue gas is effectively shortened while the laying range remains unchanged, which reduces the influence of heat loss on the heating speed and effect, improves the heating efficiency, and combines Figure 5 and Figure 6 , the flues 7 are arranged in a bending manner on the outer wall of the heating bin 1. Each flue 7 is in direct communication with the heating fire channel 2, so that the waste gas in the heating fire channel 2 can be discharged through each flue 7. Compared with the bending laying of a single flue 7, the laying mode of the symmetric and multiple flues 7 can significantly improve the uniformity of heating, effectively reduce the influence of heat loss on the heating speed and effect, and thus improve the overall heating efficiency and effect of the system. The heating bin 1 is provided with a negative pressure system (using existing technology), which extracts the high-temperature steam in the heating bin 1 and sends it to a waste treatment system. The treated waste gas is sent to the heating fire channel 2 for secondary combustion, which can effectively remove harmful substances in the waste gas. Then, the combustion tail gas in the heating fire channel is extracted and sent to the subsequent tail gas treatment system after passing through the covering heat conducting oil layer, so as to utilize the high-temperature tail gas to conduct heat to the heat conducting oil and improve the thermal efficiency.

[0031] In the embodiments of the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0032] In the description of the present application, it should also be noted that, unless specifically defined and limited otherwise, the terms "provided", "connected", "mounted", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, or slidingly connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The embodiments of the specific implementation are the preferred embodiments of the present application, not limited to the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An animal carcass sanitization and drying machine, characterized by: The heating bin comprises a heating fire channel axially arranged at the bottom of the heating bin, and a circulating heating layer is arranged on the heating fire channel; The covering heat-conducting oil layer comprises a heat-conducting oil cavity provided with an oil inlet and an oil outlet, and the heat-conducting oil cavity is arranged on the heating bin and the bottom region of the heat-conducting oil cavity is located between the heating fire channel and the heating bin, and the heating fire channel is used for secondary heating of the heat-conducting oil circulating in the middle part of the heat-conducting oil cavity; The covering heat-conducting smoke layer comprises a plurality of flues arranged on the heating bin and located in the heat-conducting oil cavity, and the flues are symmetrically arranged on the heating bin with the heating fire channel as the center of symmetry, and the smoke inlets of the flues are communicated with the heating fire channel. The internal heat-conducting structure comprises a main shaft provided with a central flow channel, and a double-channel rotary joint is connected to the main shaft, and a heat-conducting pipeline is arranged between the double-channel rotary joint and the main shaft, and a plurality of heat-conducting pipelines are arranged in the heating bin in a spiral manner. The circulating path of the heat-conducting oil is a double-channel rotary joint, a main shaft, a heat-conducting pipeline, a double-channel rotary joint, an oil inlet, a heat-conducting oil cavity, an oil outlet, and a circulating heating layer. The heat-conducting pipeline is provided with a paddle, and the paddle is arranged in a spiral manner and is used for rotating and stirring the material.

2. An animal carcass rendering digester according to claim 1, wherein: The oil inlet and the oil outlet are located at the top of the heating bin, and the heat-conducting oil enters the heat-conducting oil cavity from the oil inlet, flows downward along the circumference of the heating bin, then flows upward, and finally flows out from the oil outlet, and the oil inlet and the oil outlet are located close to the two ends of the heating bin.

3. An animal carcass rendering digester according to claim 1 or 2, characterised in that: The heat-conducting oil cavity comprises a middle cavity and side cavities symmetrically arranged with the middle cavity as the center, the middle cavity is located between the heating fire channel and the heating bin, the oil inlet is communicated with one of the side cavities, the oil outlet is connected to the other side cavity, and a plurality of partitions are arranged in the side cavities, and the partitions divide the space in the side cavities to form a reciprocating and bending flow path for the heat-conducting oil.

4. An animal carcass rendering digester according to claim 1 wherein: The double-channel rotary joint comprises a connecting structure provided with a flow channel one and a flow channel two, the heat-conducting oil enters the central flow channel from the flow channel two, then enters the heat-conducting pipeline from the central flow channel, and finally the heat-conducting oil in the heat-conducting pipeline enters the flow channel one.

5. An animal carcass rendering digester according to claim 1 wherein: The heating bin is provided with a centralized transfer area, and the centralized transfer area is provided with a discharge port, the smoke outlets of the flues are communicated with the centralized transfer area, and the centralized transfer area and the smoke inlets are located close to the same end of the heating bin.

6. An animal carcass rendering digester according to claim 1 wherein: The negative pressure system is used for pumping the high-temperature steam in the heating bin to a waste gas treatment system, the treated waste gas is sent to the heating fire channel for combustion, and then the gas in the heating fire channel is pumped out and sent to a tail gas treatment system after passing through the covering heat-conducting smoke layer.

7. An animal carcass rendering digester according to claim 1 wherein: The covering heat-conducting oil layer and the circulating heating layer are provided with a heat preservation layer.

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