A mixed feed pelleting and drying system
By integrating an extrusion pellet mill and a drying and cooling conveyor system, the problems of poor material feeding and heat energy waste during the pelleting process of mixed feed were solved, achieving uniform cutting and efficient cooling of materials, and improving production efficiency and heat energy utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGMEN HUINENG MASCH CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-03
AI Technical Summary
Existing mixed feed pelleting processes suffer from problems such as poor feed flow, heat waste, and increased ambient temperature, which affect pelleting continuity and efficiency.
The system employs an integrated extrusion granulator and drying and cooling conveyor system. The material is preheated by heating components, and the heat is collected and used for drying by a heat collection guide tube. Combined with a fan and exhaust system, the system optimizes the utilization of heat energy, achieving uniform cutting and efficient cooling of the material.
It improves the continuity of the granulation process and the efficiency of thermal energy utilization, reduces the working environment temperature, and enhances production efficiency and thermal energy utilization efficiency.
Smart Images
Figure CN224442912U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mixed feed production equipment, specifically to a mixed feed pelleting and drying system. Background Technology
[0002] Mixed feeds are mostly made from energy sources such as corn, wheat, and barley to provide carbohydrates, protein sources such as soybean meal, fish meal, and rapeseed meal to supplement amino acids, crude fiber such as wheat bran and alfalfa meal to promote digestion, and other minerals and vitamins. Currently, most pelleting is done using extruders. Because the mixture of feeds is relatively loose, the material flow within the extruder hopper is often not smooth, affecting the continuity of pelleting. The extruded material needs to be cut, and current cutting methods are mostly driven by independent power sources, resulting in complex structures. Since heating is required during feed pelleting to gelatinize starch and soften the material, the temperature of the pelleted feed typically reaches around 70-80℃. Most of this drying is done by letting it cool and dissipate heat, which is inefficient. Furthermore, the heat generated in the factory increases the indoor temperature, affecting the working environment and representing a significant waste of energy. Utility Model Content
[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a mixed feed pelleting and drying system.
[0004] This utility model includes an extrusion granulator and a drying and cooling conveyor. The extrusion granulator includes an extrusion base, an extrusion cylinder, an extrusion head, a dispersing roller, and an extrusion motor. The extrusion cylinder is fixed to the extrusion base. The extrusion base is provided with a heating component for heating the extrusion cylinder. The extrusion component is provided inside the extrusion cylinder. A feed hopper is provided at the top of the extrusion cylinder. The dispersing roller is rotatably installed in the feed hopper. The extrusion motor is installed on the extrusion base and drives the extrusion component and the dispersing roller to rotate. The extrusion head is installed at the front end of the extrusion cylinder. The extrusion component is provided with a cutting blade extending to the outside of the extrusion head. A heat collection and guide cylinder is provided on the extrusion base and fitted onto the extrusion head.
[0005] The top of the drying and cooling conveyor is provided with a drying hood, an exhaust pipe and a cooling hood in sequence from front to back. A set of air inlet pipes are arranged on the drying hood. The set of air inlet pipes are connected by a main air inlet pipe. A fan is provided at the air inlet end of the main air inlet pipe. An insulation jacket is provided on the main air inlet pipe. An air inlet pipe communicating with the heat collection guide tube and an exhaust pipe communicating with the exhaust pipe are respectively provided on the insulation jacket. A first exhaust channel communicating with the drying hood and a second exhaust channel communicating with the cooling hood are respectively provided on the exhaust pipe. The height of the first exhaust channel is higher than the height of the second exhaust channel.
[0006] The heating assembly includes a heating cylinder mounted on the extrusion cylinder, and a set of electric heating wires are provided inside the heating cylinder.
[0007] The extrusion assembly includes an extrusion shaft and a spiral extrusion blade. The spiral extrusion blade is fixed to the extrusion shaft. The extrusion head is provided with an extrusion shaft mounting hole. One end of the extrusion shaft passes through the extrusion shaft mounting hole and extends to the outside of the extrusion head. The cutting blade is mounted on the extrusion shaft and fits against the outside of the extrusion head.
[0008] The dispersing roller has a ring array of multiple sets of dispersing teeth, and the dispersing roller is connected to the extrusion shaft by a belt or gear.
[0009] The heat collection guide tube is installed at an angle on the extrusion base. The discharge end of the heat collection guide tube is equipped with a cover plate, and the bottom of the cover plate is equipped with a discharge port. The heat collection guide tube is connected to the drying hood through a chute.
[0010] A spiral guide plate is installed between the main air inlet pipe and the insulation jacket.
[0011] The inner sides of both the feed end and the discharge end of the drying hood are equipped with flat plates. The flat plates are hinged to the drying hood by pins, and a set of uniform rake teeth are provided at the bottom of the flat plates.
[0012] An airflow guide plate is provided below the first exhaust channel located inside the exhaust pipe.
[0013] The exhaust pipe's outlet end extends into the exhaust cylinder, and an upward-opening exhaust elbow is provided on the exhaust pipe's outlet end.
[0014] The advantages of this utility model are: the material can quickly and evenly enter the extrusion cylinder through the dispersing roller in the feeding hopper, which facilitates the extrusion component to extrude the material evenly and continuously. The cutting blade rotates synchronously with the extrusion component to cut the extruded material, and the structure is simple. The heat generated after extrusion is collected by the heat collection and guide cylinder and then used to dry the pelleted feed after heat exchange with the air, thereby improving the heat energy utilization rate. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a schematic diagram of an extrusion granulator.
[0017] Figure 3 This is a schematic diagram of the internal structure of an extrusion granulator.
[0018] Figure 4 This is a schematic diagram of the drying and cooling conveyor structure.
[0019] Figure 5 This is a schematic diagram of the internal structure of the drying and cooling conveyor.
[0020] Figure 6 This is a schematic diagram of a flat panel structure. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0023] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] As shown in the attached drawings, this utility model includes an extrusion granulator 20 and a drying and cooling conveyor 21. The extrusion granulator 20 includes an extrusion base 23, an extrusion cylinder 24, an extrusion head 25, a dispersing roller 26, and an extrusion motor 27. The extrusion cylinder 24 is fixedly connected to the extrusion base 23. The extrusion base 23 is provided with a heating component 30 for heating the extrusion cylinder 24. An extrusion component 31 is provided inside the extrusion cylinder 24. A feed hopper 32 is provided at the top of the extrusion cylinder 24. The dispersing roller 26 is rotatably installed in the feed hopper 32. The extrusion motor 27 is installed on the extrusion base 23 and drives the extrusion component 31 and the dispersing roller 26 to rotate. The extrusion head 25 is installed at the front end of the extrusion cylinder 24. A cutting blade 33 is provided on the extrusion component 31 extending to the outside of the extrusion head 25. A heat collection and guiding cylinder 34 is provided on the extrusion base 23 and sleeved on the extrusion head 25.
[0026] The mixed material is fed into the feed hopper 32. The heating component 30 is used to heat the material in the extrusion cylinder 24 at a temperature of 100-120℃. The starch gelatinizes when heated, making the material soft. Then, the extrusion component 31 extrudes the material from the extrusion head 25 in strip form. The cutting blade 33 cuts the extrudate into granules during rotation. The dispersing roller 26 rotates in the feed hopper 32 to disperse the material and make it fall evenly into the extrusion cylinder 24, ensuring the continuity of extrusion.
[0027] The top of the drying and cooling conveyor 21 is provided with a drying hood 40, an exhaust pipe 41 and a cooling hood 42 in sequence from front to back. A set of air inlet pipes 45 are arranged on the drying hood 40. The set of air inlet pipes 45 are connected by an air inlet main pipe 46. A fan 47 is provided at the air inlet end of the air inlet main pipe 46. An insulation jacket 48 is provided on the air inlet main pipe 46. An air inlet pipe 49 communicating with the heat collection guide cylinder 34 and an exhaust pipe 50 communicating with the exhaust pipe 41 are respectively provided on the insulation jacket 48. A first exhaust channel 51 communicating with the drying hood 40 and a second exhaust channel 52 communicating with the cooling hood 42 are respectively provided on the exhaust pipe 41, and the height of the first exhaust channel 51 is higher than the height of the second exhaust channel 52.
[0028] The cut granules enter the drying and cooling conveyor 21, which is a belt conveyor. The granules move forward with the belt conveyor and pass through the drying hood 40, the exhaust pipe 41 and the cooling hood 42 in sequence. The granules are dried with warm air in the drying hood 40 and then enter the cooling hood 42. The cold air flows in the cooling hood 42 to carry away the heat of the granules and cool them down. One end of the exhaust pipe 41 extends out of the factory building, forming a chimney effect to carry away the heat.
[0029] After the material is extruded and cut from the extruder head 25, the temperature can reach 70-80℃. The heat collection guide tube 34 is used to collect the heat emitted by the granules. Under the effect of the chimney, the airflow in the exhaust pipe 41 is drawn upward, and a negative pressure is formed in the insulation jacket 48 connected to the exhaust pipe 41, thereby drawing the hot air in the heat collection guide tube 34 into the insulation jacket 48. When the hot air flows through, it heats the air inlet pipe 46. The fan 47 sends the outside cold air into the air inlet pipe 46, and after being heated in the air inlet pipe 46, it is blown out from each air inlet pipe 45 to dry the granules spread on the belt conveyor with warm air. The blown air then enters the exhaust pipe 41 and is discharged.
[0030] At the same time, due to the chimney effect, the cooling hood 42 is also under negative pressure. Cold air is drawn in from the discharge end of the cooling hood 42 and flows towards the feed end, and then enters the exhaust pipe 41 to be discharged. During the flow, the heat of the granules is carried away, and the granules are cooled down to below 40°C, which makes it easier to bag and pack.
[0031] Preferably, the heating assembly 30 includes a heating cylinder mounted on the extrusion cylinder 24, and a set of electric heating wires are provided inside the heating cylinder.
[0032] Preferably, the extrusion assembly 31 includes an extrusion shaft 36 and a spiral extrusion blade 37. The spiral extrusion blade 37 is fixed to the extrusion shaft 36. The extrusion head 25 is provided with an extrusion shaft mounting hole. One end of the extrusion shaft 36 passes through the extrusion shaft mounting hole and extends to the outside of the extrusion head 25. The cutting blade 33 is mounted on the extrusion shaft 36 and fits against the outside of the extrusion head 25.
[0033] The cutting blade 33 includes a blade holder and a set of blades mounted in a ring on the blade holder. The cutting blade 33 is detachably mounted on the extrusion shaft 36 and rotates synchronously with the extrusion shaft 36. The number of blades can control the particle size of the granules. The more blades there are, the smaller the cutting distance between the front and rear blades, the faster the cutting frequency, and the smaller the granules. Conversely, the smaller the granules, the larger the granules. Different numbers of blades can be installed according to the required particle size.
[0034] Furthermore, the dispersing roller 26 has multiple sets of dispersing toothed rods arranged in a ring, and the dispersing roller 26 is connected to the extrusion shaft 36 by a belt or gear. The dispersing roller 26 and the extrusion shaft 36, which extend out of the feed hopper 32 and the extrusion cylinder 24, are respectively provided with matching pulleys or transmission gears, and the dispersing roller 26 is connected to the extrusion shaft 36 by a belt or gear.
[0035] Furthermore, the heat collection guide cylinder 34 is installed at an angle on the extrusion base 23. The discharge end of the heat collection guide cylinder 34 is provided with a cover plate 38, and the bottom of the cover plate 38 is provided with a discharge port. The heat collection guide cylinder 34 communicates with the inside of the drying hood 40 through a slide. The heat collection guide cylinder 34 is composed of two semi-cylinders hinged together, one half of which is movable and can be opened to facilitate the replacement and maintenance of the inner extrusion head 25.
[0036] Furthermore, a spiral guide plate 55 is provided between the air inlet main pipe 46 and the insulation jacket 48. The spiral guide plate 55 is used to guide the intake hot air to flow in a ring around the air inlet main pipe 46 from front to back, so as to heat the air inlet main pipe 46 evenly.
[0037] Furthermore, the inner sides of the feed end and discharge end of the drying hood 40 are provided with a flat plate 56, which is hinged to the drying hood 40 by a pin, and a set of uniform rake teeth is provided at the bottom of the flat plate 56.
[0038] The flat plates 56 at both ends close the drying hood 40 to form a relatively enclosed space. After the hot air is blown in, it can be smoothly discharged into the first exhaust channel 51. The flat plate 56 is a movable plate. When the granules pass through, the flat plate 56 is pushed to one side. At the same time, the flat plate 56 can disperse and spread the granules under the reaction force.
[0039] Furthermore, an airflow guide plate 58 is provided below the first exhaust channel 51 located inside the exhaust pipe 41. The airflow guide plate 58 is inclined upward. After the airflow in the drying hood 40 enters the exhaust pipe 41, it flows upward, which can increase the negative pressure of the second exhaust channel 52 below the exhaust pipe 41 and increase the suction at the second exhaust channel 52, so that more cold air enters the cooling hood 42.
[0040] Furthermore, the exhaust pipe 50 has its outlet end extending into the exhaust cylinder 41, and an exhaust elbow 59 with an upward opening is provided on the exhaust pipe 50's outlet end.
[0041] The opening of the exhaust elbow 59 faces upward, and the rising airflow inside the exhaust pipe 41 draws the airflow at the exhaust elbow 59 upward, preventing the airflow from flowing back into the exhaust pipe 50.
Claims
1. A mixed feed pelleting and drying system, characterized in that The equipment includes an extrusion granulator (20) and a drying and cooling conveyor (21). The extrusion granulator (20) includes an extrusion base (23), an extrusion cylinder (24), an extrusion head (25), a dispersing roller (26), and an extrusion motor (27). The extrusion cylinder (24) is fixed to the extrusion base (23). The extrusion base (23) is provided with a heating component (30) for heating the extrusion cylinder (24). An extrusion assembly (31) is provided inside the extrusion cylinder (24). The top of the extrusion cylinder (24) is provided with... The feeding hopper (32) and the dispersing roller (26) are rotatably installed inside the feeding hopper (32). The extrusion motor (27) is installed on the extrusion base (23) and drives the extrusion assembly (31) and the dispersing roller (26) to rotate. The extrusion head (25) is installed at the front end of the extrusion cylinder (24). The extrusion assembly (31) is provided with a cutting blade (33) extending to the outside of the extrusion head (25). The extrusion base (23) is provided with a heat collection guide cylinder (34) sleeved on the extrusion head (25). The top of the drying and cooling conveyor (21) is provided with a drying hood (40), an exhaust pipe (41) and a cooling hood (42) in sequence from front to back. A set of air inlet pipes (45) are arranged on the drying hood (40). The set of air inlet pipes (45) are connected by an air inlet main pipe (46). A fan (47) is provided at the air inlet end of the air inlet main pipe (46). An insulation jacket (48) is provided on the air inlet jacket (48). An air inlet pipe (49) connected to the heat collection guide cylinder (34) and an exhaust pipe (50) connected to the exhaust pipe (41) are respectively provided on the insulation jacket (48). A first exhaust channel (51) connected to the drying hood (40) and a second exhaust channel (52) connected to the cooling hood (42) are respectively provided on the exhaust pipe (41). The height of the first exhaust channel (51) is higher than the height of the second exhaust channel (52).
2. The mixed feed granulation and drying system according to claim 1, characterized in that The heating assembly (30) includes a heating cylinder mounted on the extrusion cylinder (24), and a set of electric heating wires are provided inside the heating cylinder.
3. The mixed feed granulation and drying system according to claim 1, characterized in that The extrusion assembly (31) includes an extrusion shaft (36) and a spiral extrusion blade (37). The spiral extrusion blade (37) is fixed to the extrusion shaft (36). The extrusion head (25) is provided with an extrusion shaft mounting hole. One end of the extrusion shaft (36) passes through the extrusion shaft mounting hole and extends to the outside of the extrusion head (25). The cutting blade (33) is mounted on the extrusion shaft (36) and fits against the outside of the extrusion head (25).
4. The mixed feed granulation and drying system according to claim 3, characterized in that The dispersing roller (26) has multiple sets of dispersing toothed rods arranged in a ring. The dispersing roller (26) and the extrusion shaft (36) are driven by a belt or gear.
5. The mixed feed granulation and drying system according to claim 1, characterized in that The heat collection guide tube (34) is installed at an angle on the extrusion base (23). The discharge end of the heat collection guide tube (34) is provided with a cover plate (38), and the bottom of the cover plate (38) is provided with a discharge port. The heat collection guide tube (34) is connected to the drying hood (40) through a slide.
6. The mixed feed granulation and drying system according to claim 1, characterized in that A spiral guide plate (55) is provided between the main air intake pipe (46) and the insulation jacket (48).
7. The mixed feed granulation and drying system according to claim 1, characterized in that The inner sides of the feed end and discharge end of the drying hood (40) are provided with a flat plate (56). The flat plate (56) is hinged to the drying hood (40) by a pin. A set of uniform rake teeth is provided at the bottom of the flat plate (56).
8. The mixed feed granulation and drying system according to claim 1, characterized in that A gas flow guide plate (58) is arranged below the first exhaust passage (51) inside the exhaust cylinder (41).
9. The mixed feed granulation and drying system according to claim 1, characterized in that The exhaust pipe (50) has an outlet end extending into the exhaust cylinder (41), and an exhaust elbow (59) is arranged on the outlet end of the exhaust pipe (50) and opens upward.