CN223568668U - Five-shaft extruder - Google Patents

Abstract

This utility model discloses a five-screw extruder, including a power unit, a screw barrel, and a conveying assembly. The power unit has a gearbox, and the screw barrel is arranged on one side of the output end of the gearbox. An extrusion chamber is formed inside the screw barrel. The conveying assembly is disposed inside the extrusion chamber of the screw barrel and connected to the gearbox. The conveying assembly includes a central screw and four peripheral screws. The four peripheral screws surround the outer periphery of the central screw, and the central screw and the four peripheral screws form at least four meshing zones. The five-screw extruder uses five screws, and the five screws form at least four meshing zones, which is equivalent to the production capacity of four twin-screw extruders or two three-screw extruders. Therefore, small-diameter, low-length-to-diameter ratio screws can be combined to meet production requirements, eliminating the problems of large size and installation space of extruders, reducing manufacturing costs, and the at least four meshing zones can improve the mixing quality of feed products.

Description

Five-axis bulking machine

Technical Field

The utility model relates to the technical field of feed production equipment, in particular to a five-shaft bulking machine.

Background

At present, the bulking machine is widely applied to industries such as aquaculture industry, pet food, plastics, battery slurry and the like. The bulking machine used in the feed industry is usually a biaxial feed bulking machine or a triaxial feed bulking machine, two screws of the biaxial bulking machine have only one meshing area, and three screws of the three-screw bulking machine have only 2-3 meshing areas. The biggest disadvantage of biax bulking machine and triaxial bulking machine is when needs increase output, because the feed amount of feed inlet is decided to the screw diameter size, consequently must increase the screw diameter, and improves the material plasticity and still increases the draw ratio of screw rod, leads to the bulking machine bulky, needs bigger installation space, and manufacturing cost is high.

Disclosure of utility model

The present utility model is directed to solving at least one of the technical problems in the related art. Therefore, the utility model provides a five-shaft bulking machine, and five screws provide more meshing areas, so that the bulking machine is beneficial to maintaining small volume on the premise of improving productivity.

According to an embodiment of the utility model, there is provided a five-axis bulking machine, which comprises a power unit, a screw barrel and a conveying component, wherein the power unit is provided with a gearbox, the screw barrel is arranged on one side of an output end of the gearbox, an extrusion cavity is formed in the screw barrel, the conveying component is arranged in the extrusion cavity of the screw barrel, the conveying component is connected with the gearbox and comprises a central screw rod and four peripheral screws, the four peripheral screws surround the periphery of the central screw rod, and the central screw rod and the four peripheral screws form at least four meshing areas.

The five-axis bulking machine provided by the embodiment of the utility model has at least the following beneficial effects:

The five-axis bulking machine adopts five screws, at least four meshing areas are formed among the five screws, and the capacity of the four double-screw bulking machines or the two three-screw bulking machines is equivalent, so that the small-diameter and small-length-diameter-ratio screws can be combined to meet the requirement of the yield, the problems of large volume and large installation space of the bulking machine are solved, the manufacturing cost is reduced, and the mixing quality of feed products can be improved through at least four meshing areas.

According to some embodiments of the utility model, four of the peripheral screws are arranged in groups of two, one group of the peripheral screws and the central screw being defined as an isosceles triangle or an equilateral triangle.

According to some embodiments of the utility model, when a set of the peripheral screws and the central screw is defined as an isosceles triangle, the base angle α of the isosceles triangle is set to 30 ° or less α or less than 60 °.

According to some embodiments of the utility model, two sets of the peripheral screws are distributed on the upper and lower sides or on the left and right sides of the central screw.

According to some embodiments of the utility model, each set of the peripheral screws forms three of the engagement zones with the central screw.

According to some embodiments of the utility model, each set of the peripheral screws forms two of the engagement zones with the central screw.

According to some embodiments of the utility model, one said engagement zone is formed between each said peripheral screw and said central screw.

According to some embodiments of the utility model, the barrel comprises an inner liner disposed within the extrusion chamber, the inner liner having an inner bore shaped to fit the peripheral screw.

According to some embodiments of the utility model, the screw barrel is provided with a feed inlet and a discharge outlet, the feed inlet is arranged on the outer wall of one end of the screw barrel, which is close to the gearbox, the feed inlet is communicated with the extrusion cavity, and the discharge outlet is arranged on one end of the screw barrel, which is far away from the gearbox.

According to some embodiments of the utility model, the screw drive device further comprises a stand, wherein the power unit is fixed on the stand, the stand is provided with a bracket, and the screw cylinder is fixed on the bracket.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a front view of a five-axis bulking machine of an embodiment of the present utility model;

FIG. 2 is a left side view of a five-axis bulking machine of an embodiment of the present utility model;

FIG. 3 is a schematic view of a transport assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a delivery assembly in some embodiments of the utility model;

FIG. 5 is a schematic cross-sectional view of a delivery assembly in accordance with further embodiments of the utility model;

fig. 6 is a schematic cross-sectional view of a delivery assembly in accordance with still other embodiments of the present utility model.

Reference numerals illustrate:

The power unit 100, the motor 110, the gearbox 120, the screw barrel 200, the extrusion cavity 201, the inner bushing 210, the feed inlet 220, the discharge outlet 230, the conveying assembly 300, the meshing zone 301, the central screw 310, the peripheral screw 320, the stand 400, the bracket 410 and the cooling pipeline 420.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The bulking machine is a common device in the industries of feed, food and the like and is used for bulking materials after high-temperature and high-pressure treatment so as to achieve the purposes of changing the shape of the materials, improving the taste, sterilizing, disinfecting and the like. The traditional bulking machine adopts a double-shaft structure, wherein the double-shaft bulking machine can improve the mixing effect and the bulking quality of materials to a certain extent due to the fact that the double-shaft bulking machine is provided with two mutually meshed screws. However, as production demands increase, the capacity of conventional twin-shaft puffing machines has been difficult to meet the demands of mass production. Although three-shaft bulking machines exist in the market, the capacity and the mixing effect still have room for improvement.

Referring to fig. 1 to 6, the present utility model proposes a five-axis bulking machine, which adopts a five-screw combined structure, including a central screw 310 and four peripheral screws 320, wherein the four peripheral screws 320 surround the periphery of the central screw 310 to form at least four engagement areas 301, which can greatly increase the productivity of the bulking machine, improve the mixing quality of materials, and reduce the volume and manufacturing cost of the bulking machine.

The five-axis bulking machine includes a power unit 100, a screw barrel 200, and a conveying assembly 300. The power unit 100 includes a motor 110 and a gearbox 120, a rotating shaft of the motor 110 is connected with an input shaft of the gearbox 120, the transmission assembly 300 is connected with an output shaft of the gearbox 120, and the rotation speed and torque are changed by the gearbox 120 to transmit power of the motor 110 to the transmission assembly 300. The gearbox 120 can be a gear box, and the gear box has the advantages of stable transmission, strong bearing capacity, high conversion efficiency, compact structure, low operation noise and the like, and is suitable for the requirements of a five-axis bulking machine.

The screw barrel 200 is disposed at an output end side of the gear box 120, and an extrusion chamber 201 is formed inside the screw barrel 200 for receiving and conveying materials. The conveying assembly 300 is disposed within the extrusion chamber 201 of the barrel 200, and the material is extruded and conveyed by the cooperation of the conveying assembly 300 and the barrel 200.

The conveying assembly 300 is an improved core point of the bulking machine, the conveying assembly 300 comprises a central screw 310 and four peripheral screws 320, the four peripheral screws 320 surround the periphery of the central screw 310, the four peripheral screws 320 can be uniformly distributed or non-uniformly distributed along the circumferential direction of the central screw 310, and the four peripheral screws 320 and the central screw 310 form at least four meshing areas 301. The engagement zone 301 is the primary area for mixing and puffing the material, which is subjected to intense shearing, extrusion and stretching action in the engagement zone 301 by the rotation and intermeshing of the screws, thereby achieving efficient mixing and puffing.

The number of engagement zones 301 has a significant impact on the performance of the expander, and the five-axis expander proposed by the present utility model can form at least four engagement zones 301 using five screws. During the transport of material, the motor 110 transmits power to the transport assembly 300 through the gearbox 120, and the central screw 310 and the four peripheral screws 320 of the transport assembly 300 rotate together. The material moves forward in the extrusion chamber 201 of the screw barrel 200 under the urging of the conveying assembly 300. Because the five screws of the conveying assembly 300 form at least four engagement zones 301, material is transferred between the engagement zones 301 and subjected to more shearing, extrusion and stretching, thereby improving the bulking effect and mixing quality. Meanwhile, due to the adoption of a structure of combining five screws, the productivity of the bulking machine is greatly improved.

The five-axis bulking machine can be widely applied to material bulking and mixing processes in the industries of feed, food and the like. Particularly in the field of feed production, the five-axis bulking machine can obviously improve the mixing quality and the production efficiency of feed products and reduce the production cost due to various feed raw materials and complex formula and higher mixing effect and productivity requirements of the bulking machine.

Compared with the prior art, the five-shaft bulking machine provided by the utility model has the following advantages:

1. The productivity is greatly improved, namely, a structure of combining five screws is adopted to form at least four meshing areas 301, which is equivalent to the productivity of four double-screw bulking machines or two three-screw bulking machines, and the requirement of mass production can be met.

2. The mixing quality is improved, at least four meshing areas 301 can obviously improve the mixing effect of materials, and the feed product is more uniform and finer.

3. The volume is reduced, because the combined structure of five screws is adopted, screws with small diameter and small length-diameter ratio can be selected, the volume and the installation space of the five-axis bulking machine are close to those of a double-screw bulking machine or a three-screw bulking machine, and the requirement on the production field is reduced.

4. The five-axis bulking machine can avoid the great improvement of the manufacturing cost while meeting the requirements of high productivity and high quality, and is beneficial to improving the market competitiveness.

Referring to fig. 4 to 6, four peripheral screws 320 are provided in a group of two, and the relative positional relationship between each group of peripheral screws 320 and the central screw 310 is defined as an isosceles triangle or an equilateral triangle.

When the set of peripheral screws 320 and central screws 310 are defined as isosceles triangles, the base angle α of the isosceles triangle is a key parameter, and the base angle α is set between 30 ° and 60 °, which is based on intensive studies of material flow characteristics, screw shear force, and bulking effect. For example, as shown in fig. 5, when the base angle α is 30 °, two peripheral screws 320 on the left side also form one engagement zone 301, and as shown in fig. 6, when the base angle α is 45 °, four engagement zones 301 are formed which are uniformly distributed, the flow of the material is more uniform, and the distribution of the shearing force is more reasonable, so that a better puffing effect and higher production efficiency can be obtained.

Referring to fig. 4, when the set of peripheral screws 320 and central screws 310 are defined as equilateral triangles, the flow of material between the screws is more stable due to the symmetry of the equilateral triangles, and the risk of material blockage and screw wear can be reduced.

Referring to fig. 2 and 4, in some embodiments of the present utility model, two sets of peripheral screws 320 are disposed on both the upper and lower sides of the central screw 310, and the height of the barrel 200 is correspondingly increased, but the vertical flow path of the material between the screws is optimized.

Referring to fig. 5 and 6, in other embodiments of the present utility model, two sets of peripheral screws 320 are disposed on the left and right sides of the central screw 310, and the width of the barrel 200 is correspondingly increased, but the horizontal flow path of the material between the screws is optimized.

Referring to fig. 4 and 5, each set of peripheral screws 320 and the central screw 310 form three meshing areas 301, and the five-axis bulking machine has six meshing areas 301, so that the shearing and mixing effects of materials are optimal, the bulking efficiency is improved, and the taste of the bulked product is finer and more uniform.

Referring to fig. 6, in some embodiments of the present utility model, one engagement zone 301 is formed between each peripheral screw 320 and the central screw 310, and four engagement zones 301 are uniformly distributed along the circumference of the central screw 310. During the conveying process, the materials can be subjected to multiple extrusion and shearing in four meshing areas 301, so that better puffing effect and production efficiency are achieved.

Referring to fig. 2, in some embodiments of the present utility model, an inner liner 210 is disposed within a barrel 200, and the inner bore of the inner liner 210 is shaped to fit within a peripheral screw 320, i.e., the inner bore of the inner liner 210 forms an extrusion chamber 201. The provision of the inner bushing 210 can simplify the structure of the screw cylinder 200 and reduce the cost, improve the wear resistance and the service life of the screw cylinder 200, and the inner bushing 210 can be provided in plurality and installed in the screw cylinder 200 in sequence. The inner bushing 210 is typically made of a wear resistant material, such as cemented carbide or high strength stainless steel, and the shape of the inner bore of the inner bushing 210 matches the spiral shape of the peripheral screw 320 so that the screw, when rotated, cooperates with the inner bushing 210 to effect the transfer of material. In addition, the inner liner 210 also serves to insulate and preserve heat, preventing the temperature of the screw barrel 200 from becoming too high.

Referring to fig. 1, a feed inlet 220 and a discharge outlet 230 are provided on a screw cylinder 200, wherein the feed inlet 220 is provided at an upper side of an outer wall of one end of the screw cylinder 200 near a gearbox 120, materials can smoothly enter an extrusion cavity 201, and the feed inlet 220 is generally connected with a hopper having a conical or funnel-shaped structure, so as to facilitate the feeding and dispersing of the materials. Additional equipment such as a vibrator or agitator may also be provided at the inlet 220 to ensure that the material is evenly dispersed. The feed inlet 220 may also be equipped with a metering device to precisely control the input of material. A discharge port 230 is provided at an end of the barrel 200 remote from the gearbox 120, and a cutting device or box for receiving material may be provided at the discharge port 230 to receive the extruded material.

Referring to fig. 1, the five-axis expander further comprises a stand 400, a bracket 410 is provided on the stand 400, the power unit 100 is fixed on the stand 400, the screw cylinder 200 is fixed on the bracket 410, the overall stability and reliability are improved, and meanwhile, the installation, the debugging and the maintenance of the five-axis expander are facilitated.

The housing 400 is typically constructed of a strong steel or cast iron that is capable of withstanding the vibrations generated by the expander during operation. Auxiliary equipment such as a damping device or a vibration isolation device can be further arranged on the stand 400 to further reduce noise and vibration generated in the operation process of the bulking machine.

The bracket 410 provides a single or multiple point support to the screw barrel 200, improving the stability of the screw barrel 200. The screw barrel 200 is usually connected with a cooling pipeline 420 for conveying cooling water, so that the screw barrel 200 is helped to cool down and control the temperature, the cooling pipeline 420 is also arranged on the bracket 410, the integration level is high, and the space occupation is reduced.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A five-axis bulking machine, comprising:

a power unit having a gearbox;

The screw barrel is arranged at one side of the output end of the gearbox, and an extrusion cavity is formed in the screw barrel;

The conveying assembly is arranged in the extrusion cavity of the screw cylinder and connected with the gearbox, the conveying assembly comprises a central screw rod and four peripheral screw rods, the four peripheral screw rods surround the periphery of the central screw rod, and the central screw rod and the four peripheral screw rods form at least four meshing areas.

2. A five axis bulking machine of claim 1 wherein four of the peripheral screws are provided in groups of two, one group of the peripheral screws and the central screw being defined as an isosceles triangle or an equilateral triangle.

3. The five-axis bulking machine of claim 2 wherein when a set of the peripheral screws and the central screw are defined as isosceles triangles, the base angle α of the isosceles triangle is set to be 30 ° or less and α or less than 60 °.

4. The five-axis bulking machine of claim 2 wherein two sets of said peripheral screws are disposed on either the upper and lower sides or the left and right sides of said central screw.

5. A five-axis bulking machine of claim 2 wherein each set of said peripheral screws and said central screw form three said engagement zones.

6. A five-axis bulking machine of claim 2 wherein each set of said peripheral screws and said central screw form two said engagement zones.

7. The five-axis bulking machine of claim 1 wherein each of the peripheral screws and the central screw form one of the engagement zones therebetween.

8. The five-axis bulking machine of any of claims 1 to 7 wherein the barrel comprises an inner liner disposed within the extrusion chamber, the inner liner having an inner bore shape that is compatible with the peripheral screw.

9. The five-axis bulking machine of any of claims 1 to 7 wherein the screw barrel is provided with a feed inlet and a discharge outlet, the feed inlet is provided on the outer wall of one end of the screw barrel which is close to the gearbox, the feed inlet is communicated with the extrusion cavity, and the discharge outlet is provided on the end of the screw barrel which is far away from the gearbox.

10. The five-axis bulking machine of any of claims 1 to 7 further comprising a housing to which the power unit is secured, the housing being provided with a bracket to which the screw barrel is secured.