Screw extruder for producing brewing type coarse grain rice

Abstract

The utility model provides a screw extruder for producing brewing type coarse grain rice, which comprises a feeding mechanism and an extruding mechanism, the feeding mechanism comprises a first feeding part, a second feeding part and a conveying part, the first feeding part and the second feeding part are sequentially communicated from top to bottom to form a continuous feeding channel, and the conveying part is communicated with the feeding channel. The discharging end of the second feeding part is vertically communicated with the feeding end of the extruding mechanism, the conveying part comprises a feeding motor, a conveying shaft, an anti-sticking assembly and a spiral blade, the feeding motor is in transmission connection with the conveying shaft, the anti-sticking assembly and the spiral blade are sequentially arranged on the conveying shaft from top to bottom, the anti-sticking assembly is correspondingly arranged in the first feeding part, and the spiral blade is arranged in the conveying shaft. And the spiral blade is correspondingly arranged in the second feeding part. The feeding motor drives the transmission shaft to rotate, the anti-sticking assembly and the spiral blade are driven to rotate synchronously, the anti-sticking assembly is used for preventing mixed wet coarse grain materials from being adhered to the wall of the feeding barrel in the feeding process, and the spiral blade is used for downwards transmitting powder to the extrusion mechanism through rotary motion.

Description

Technical Field

[0001] The utility model relates to the technical field of food extrusion and ripening, in particular to a screw extruder for producing brewing type coarse grain rice. Background Art

[0002] Instant coarse-grain rice products, also known as instant rice, ready-to-eat rice or convenient rice, are a kind of instant food that is made by grinding broken rice into powder, then adding coarse-grain powder and various nutritional powders to mix, adding water to mix, and then going through processes such as extrusion, cooking, shearing, molding, drying, and cooling. It can be directly brewed with boiling water and can be restored to the form of rice in a short time. The nutritional value of this instant food is higher than that of powder and its GI value is lower than that of regular rice.

[0003] The applicant has found that the prior art has at least the following technical problems:

[0004] The feeding mechanism of the existing screw extruder is not designed reasonably. The transmission mechanism is mostly arranged horizontally and has many corners. After rice flour is added with other coarse grain flours and a certain amount of water, the surface humidity of the powder increases and the viscosity increases, which causes the powder to easily adhere to the wall of the feed barrel during the feeding process, causing poor feeding or blockage, affecting production efficiency.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a screw extruder for producing brewing coarse grain rice, so as to solve the technical problems that the feeding mechanism design of the existing screw extruder is unreasonable, the powder is easy to adhere to the wall of the feeding barrel during the feeding process, causing poor feeding or blockage, etc., which affects the production efficiency. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a screw extruder for producing instant coarse-grain rice, comprising a feeding mechanism and an extrusion mechanism, wherein the feeding mechanism comprises a first feeding part, a second feeding part and a conveying part, wherein the first feeding part and the second feeding part are sequentially connected from top to bottom, and the discharge end of the second feeding part is vertically connected to the feeding end of the extrusion mechanism, and the conveying part comprises a feeding motor, a transmission shaft, an anti-sticking component and a spiral blade, wherein the feeding motor is drivingly connected to the transmission shaft, the anti-sticking component and the spiral blade are sequentially arranged on the transmission shaft from top to bottom, the anti-sticking component is correspondingly arranged in the first feeding part, and the spiral blade is correspondingly arranged in the second feeding part.

[0009] Preferably, the first feeding part is a hollow frustum structure, and the inner diameter gradually decreases from top to bottom; the number of the anti-sticking components is multiple, and they are staggered along the axial direction of the transmission shaft.

[0010] Preferably, the anti-sticking component includes an anti-sticking scraper and a connecting rod, the anti-sticking scraper is arranged parallel to the inner wall of the first feed part and is connected to the transmission shaft through the connecting rod, and the gap between the outer edge of the anti-sticking scraper and the inner wall of the first feed part is 1-2mm.

[0011] Preferably, the second feed part is a hollow cylindrical structure, and the gap between the outer edge of the spiral blade and the inner wall of the second feed part is 1-2 mm.

[0012] Preferably, the extrusion mechanism includes a driving part, an extrusion part and an extrusion assembly, the discharge end of the second feed part is connected to the feed end of the extrusion part, the extrusion assembly is arranged in the cavity of the extrusion part, the extrusion assembly includes a screw core shaft and a threaded element, one end of the screw core shaft is transmission-connected to the driving part, and the other end is connected to the extrusion part through a bearing; the number of the threaded elements is multiple, and they are detachably mounted on the screw core shaft in sequence along the axial direction of the screw core shaft.

[0013] Preferably, a first involute spline is arranged on the outer wall surface of the screw core shaft, and a second involute spline meshing with the first involute spline is arranged on the inner wall surface of the threaded element.

[0014] Preferably, the diameter of the first involute spline gradually decreases toward the center of the screw mandrel, and the diameter of the second involute spline gradually increases toward the center of the screw mandrel.

[0015] Preferably, the number of the threaded elements is 42 groups.

[0016] The preferred technical solution of the utility model can also produce at least the following technical effects:

[0017] The utility model effectively avoids the unreasonable design of the feeding mechanism of the existing screw extruder. The transmission mechanism is mostly arranged horizontally and has many corners. Because the rice flour is added with other coarse grain powders and a certain amount of water, the surface humidity of the material powder increases and the viscosity is enhanced, which causes the material powder to easily adhere to the wall of the feeding barrel during the feeding process, resulting in poor feeding or blockage, etc., affecting production efficiency. The utility model provides a screw extruder for brewing coarse grain rice production. The utility model provides a screw extruder for brewing coarse grain rice production, including a feeding mechanism and an extrusion mechanism. The feeding mechanism includes a first feeding part, a second feeding part and a feeding part. The first feeding part and the second feeding part are connected in sequence from top to bottom. The discharge end of the second feeding part is vertically connected to the feeding end of the extrusion mechanism. The feeding part includes a feeding motor, a transmission shaft, an anti-sticking component and a spiral blade. The feeding motor is connected to the transmission shaft in a transmission manner. The anti-sticking component and the spiral blade are arranged on the transmission shaft in sequence from top to bottom. The anti-sticking component is correspondingly arranged in the first feeding part, and the spiral blade is correspondingly arranged in the second feeding part. The first feeding part and the second feeding part are connected in sequence from top to bottom to form a continuous feeding channel. The feeding motor drives the transmission shaft to rotate, driving the anti-sticking component and the spiral blade to rotate synchronously. The anti-sticking component is used to prevent the powder from adhering to the wall of the feeding barrel during the feeding process, and the spiral blade is used to transfer the powder downward to the extrusion mechanism through rotation. In addition, the discharge end of the second feeding part is vertically connected to the feeding end of the extrusion mechanism, which reduces the corners and helps the powder to enter the extrusion mechanism more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a structural schematic diagram of a screw extruder for producing brewing coarse grain rice provided by the utility model;

[0020] Figure 2 The utility model provides a schematic diagram of the local structure of a screw core shaft and a threaded element of a screw extruder for producing brewing coarse-grain rice.

[0021] In the figure:

[0022] 1. First feed section; 101. Feed port; 2. Second feed section; 3. Feed motor; 4. Transmission shaft; 401. First transmission section; 402. Second transmission section; 5. Anti-sticking assembly; 501. Anti-sticking scraper; 502. Connecting rod; 6. Spiral blade; 7. Extrusion motor; 8. Extrusion section; 801. Flow channel; 802. Extrusion outlet; 9. Screw core shaft; 901. First involute spline; 10. Threaded element; 11. Bearing. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0024] like Figure 1-Figure 2 As shown, the utility model provides a screw extruder for producing instant coarse-grain rice, comprising a feeding mechanism and an extrusion mechanism. The feeding mechanism comprises a first feeding part 1, a second feeding part 2 and a conveying part. The first feeding part 1 and the second feeding part 2 are sequentially connected from top to bottom, and the discharge end of the second feeding part 2 is vertically connected to the feeding end of the extrusion mechanism. The conveying part comprises a feeding motor 3, a transmission shaft 4, an anti-sticking component 5 and a spiral blade 6. The feeding motor 3 is transmission-connected to the transmission shaft 4, and the anti-sticking component 5 and the spiral blade 6 are sequentially arranged on the transmission shaft 4 from top to bottom. The anti-sticking component 5 is correspondingly arranged in the first feeding part 1, and the spiral blade 6 is correspondingly arranged in the second feeding part 2.

[0025] The first feeding part 1 and the second feeding part 2 are connected in sequence from top to bottom to form a continuous feeding channel. The feeding motor 3 drives the transmission shaft 4 to rotate, driving the anti-sticking component 5 and the spiral blade 6 to rotate synchronously. The anti-sticking component 5 is used to prevent the powder from adhering to the wall of the feeding barrel during the feeding process, and the spiral blade 6 is used to transfer the powder downward to the extrusion mechanism through rotation. Moreover, the discharge end of the second feeding part 2 is vertically connected to the feeding end of the extrusion mechanism, which reduces the corners and helps the powder to enter the extrusion mechanism more smoothly.

[0026] As an optional implementation, the first feed part 1 is a hollow frustum structure, and the inner diameter gradually decreases from top to bottom; the number of anti-sticking components 5 is multiple, and they are staggered along the axial direction of the transmission shaft 4.

[0027] Furthermore, the feeding motor 3 is arranged on the top plate of the first feeding part 1 , and the feeding port 101 is also arranged on the top plate of the first feeding part 1 .

[0028] The inner diameter of the first feed part 1 gradually decreases from top to bottom, so that the powder is gradually compressed after entering the first feed part 1 from the feed port 101, thereby reducing the gaps between the powders and arranging the powders more closely.

[0029] As an optional embodiment, the anti-sticking component 5 includes an anti-sticking scraper 501 and a connecting rod 502. The anti-sticking scraper 501 is arranged parallel to the inner wall of the first feed part 1 and is connected to the transmission shaft 4 through the connecting rod 502. The gap between the outer edge of the anti-sticking scraper 501 and the inner wall of the first feed part 1 is 1-2 mm.

[0030] When the motor drives the transmission shaft 4 to rotate, the anti-sticking scraper 501 will also rotate accordingly. The staggered anti-sticking scraper 501 will contact the powder particles at different angles and positions to scrape off the powder adhering to the inner wall of the first feeding part 1, effectively reducing the adhesion phenomenon, forming a dynamic anti-sticking effect, and keeping the inner wall of the first feeding part 1 clean. At the same time, the gap between the outer edge of the anti-sticking scraper 501 and the inner wall of the first feeding part 1 is controlled to 1-2mm, which not only ensures the scraping effect, but also avoids the excessive gap causing the powder to get stuck, so that the powder can be smoothly transmitted during the feeding process, while reducing the adhesion.

[0031] As an optional embodiment, the second feed part 2 is a hollow cylindrical structure, and the gap between the outer edge of the spiral blade 6 and the inner wall of the second feed part 2 is 1-2 mm.

[0032] Further, the transmission shaft 4 includes a first transmission section 401 and a second transmission section 402 arranged in sequence from top to bottom, and the first transmission section 401 is correspondingly arranged in the first feed section 1 for connecting the anti-sticking component 5. The second transmission section 402 is correspondingly arranged in the first feed section 1 for connecting the spiral blade 6. The diameter of the first transmission section 401 is greater than the diameter of the second transmission section 402, and the connection between the two is smooth.

[0033] Since the discharge end of the second feed part 2 is vertically connected to the feed end of the extrusion mechanism, the corner is effectively reduced, so that the powder can enter the extrusion mechanism more smoothly along the transmission channel of the second feed part 2.

[0034] When the motor drives the transmission shaft 4 to rotate, the spiral blade 6 will also rotate accordingly, and the powder is transmitted downward by the rotational motion. The spiral blade 6 adopts the existing technology, which will not be described in detail here.

[0035] The gap between the outer edge of the spiral blade 6 and the inner wall of the second feed part 2 is controlled to be 1-2 mm. This arrangement ensures that the spiral blade 6 can effectively transmit the powder and avoids the powder being stuck due to an excessively large gap.

[0036] As an optional embodiment, the extrusion mechanism includes a driving part, an extrusion part 8 and an extrusion assembly. The discharge end of the second feed part 2 is connected to the feed end of the extrusion part 8. The extrusion assembly is arranged in the cavity of the extrusion part 8. The extrusion assembly includes a screw core shaft 9 and a threaded element 10. One end of the screw core shaft 9 is transmission-connected to the driving part, and the other end is connected to the extrusion part 8 through a bearing 11. There are multiple threaded elements 10, and they are detachably mounted on the screw core shaft 9 in sequence along the axial direction of the screw core shaft 9.

[0037] Furthermore, a flow channel 801 is provided on the shell of the extrusion part 8, and the flow channel 801 is arranged in sequence along the transmission direction of the powder. By introducing a heating or cooling medium into the flow channel 801, the temperature of the cavity of the extrusion part 8 can be controlled to keep the powder at a suitable temperature during the extrusion process.

[0038] The discharge end of the extrusion portion 8 is provided with an extrusion outlet 802 . There are multiple extrusion outlets 802 , which are arranged around the outer circumference of the bearing 11 .

[0039] The central axis of the screw core shaft 9 is arranged perpendicular to the central axis of the transmission shaft 4 .

[0040] The driving part includes an extrusion motor 7, which is connected to one end of a screw core shaft 9 through a transmission assembly. The screw core shaft 9 is driven to rotate a threaded element 10 sleeved thereon to perform an extrusion action to extrude the powder entering the cavity of the extrusion part 8.

[0041] The threaded element 10 is detachably sleeved on the screw core shaft 9, so that the arrangement and shape of the threaded element 10 can be replaced or adjusted according to production needs to meet the diverse processing needs of instant coarse grain rice. Moreover, when a threaded element 10 is damaged or needs to be replaced, it can be easily removed from the screw core shaft 9 and replaced with a new threaded element 10, which simplifies the maintenance process and reduces maintenance costs.

[0042] As an optional implementation, a first involute spline 901 is provided on the outer wall surface of the screw core shaft 9 , and a second involute spline meshing with the first involute spline 901 is provided on the inner wall surface of the threaded element 10 .

[0043] The first involute spline 901 and the second involute spline are designed using the full meshing model principle to ensure full meshing when the screw mandrel 9 and the threaded element 10 are assembled, thereby improving transmission efficiency and connection stability and reliability.

[0044] In order to ensure the processing accuracy and surface quality of the first involute spline 901 and the second involute spline, the utility model adopts 3D design software for modeling and uses CNC processing equipment for precision processing. Moreover, the surface finish of the first involute spline 901 and the second involute spline after CNC processing is high, which can reduce friction resistance and wear and extend the service life. At the same time, the first involute spline 901 and the second involute spline are meshed with high precision to make the screw core shaft 9 and the threaded element 10 tightly connected, thereby improving the stability during the extrusion process.

[0045] As an optional implementation, the diameter of the first involute spline 901 gradually decreases toward the center of the screw core shaft 9, and the diameter of the second involute spline gradually increases toward the center of the screw core shaft 9, so that the two can be fully engaged during assembly, thereby improving the stability and efficiency of the transmission.

[0046] As an optional embodiment, the number of threaded elements 10 is 42 groups, and they are stacked in sequence along the axial direction of the screw core shaft 9 in a building block-like manner, so that the powder is fully extruded in the cavity of the extrusion part 8, which is convenient for subsequent processing.

[0047] Moreover, the threaded elements 10 of any specifications of pitch, thread depth and shape can be selected and arranged arbitrarily according to the processing requirements of the brewing coarse-grain rice, so as to meet the processing requirements of the brewing coarse-grain rice with different formulas and characteristics, so as to achieve a better extrusion effect, so that the powder can still meet the brewing characteristics of coarse-grain rice after being compounded with a variety of other nutrient powders, and highly restore the taste characteristics of rice.

[0048] The screw core shaft 9 and the threaded element 10 are made of a special alloy with high strength and high wear resistance, so that the screw core shaft 9 and the threaded element 10 can maintain stable performance under long-term and high-load working conditions and are not prone to deformation or breakage.

[0049] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0050] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model 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 limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "an example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0053] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A screw extruder for producing brewable coarse grain rice, characterized in that: It includes a feeding mechanism and an extrusion mechanism, the feeding mechanism includes a first feeding part, a second feeding part and a conveying part, the first feeding part and the second feeding part are connected in sequence from top to bottom, the discharge end of the second feeding part is vertically connected to the feeding end of the extrusion mechanism, the conveying part includes a feeding motor, a transmission shaft, an anti-sticking component and a spiral blade, the feeding motor is transmission-connected to the transmission shaft, the anti-sticking component and the spiral blade are arranged on the transmission shaft in sequence from top to bottom, the anti-sticking component is correspondingly arranged in the first feeding part, and the spiral blade is correspondingly arranged in the second feeding part.

2. A screw extruder for producing brewable coarse grain rice according to claim 1, characterized in that: The first feeding part is a hollow frustum structure, and the inner diameter gradually decreases from top to bottom; the number of the anti-sticking components is multiple, and they are staggered along the axial direction of the transmission shaft.

3. A screw extruder for producing brewable coarse grain rice according to claim 2, characterized in that: The anti-sticking component includes an anti-sticking scraper and a connecting rod. The anti-sticking scraper is arranged parallel to the inner wall of the first feed part and is connected to the transmission shaft through the connecting rod. The gap between the outer edge of the anti-sticking scraper and the inner wall of the first feed part is 1-2mm.

4. A screw extruder for producing brewable coarse grain rice according to claim 2, characterized in that: The second feed part is a hollow cylindrical structure, and the gap between the outer edge of the spiral blade and the inner wall of the second feed part is 1-2 mm.

5. The screw extruder for producing brewable coarse grain rice according to claim 1, characterized in that: The extrusion mechanism includes a driving part, an extrusion part and an extrusion assembly. The discharge end of the second feed part is communicated with the feed end of the extrusion part. The extrusion assembly is arranged in the cavity of the extrusion part. The extrusion assembly includes a screw core shaft and a threaded element. One end of the screw core shaft is transmission-connected to the driving part, and the other end is connected to the extrusion part through a bearing. There are multiple threaded elements, and they are detachably mounted on the screw core shaft in sequence along the axial direction of the screw core shaft.

6. A screw extruder for producing brewable coarse grain rice according to claim 5, characterized in that: A first involute spline is arranged on the outer wall surface of the screw core shaft, and a second involute spline meshing with the first involute spline is arranged on the inner wall surface of the threaded element.

7. A screw extruder for producing brewable coarse grain rice according to claim 6, characterized in that: The diameter of the first involute spline gradually decreases toward the center of the screw core shaft, and the diameter of the second involute spline gradually increases toward the center of the screw core shaft.

8. The screw extruder for producing brewable coarse grain rice according to claim 5, characterized in that: The number of the threaded elements is 42 groups.

Images