Breeding meat duck low-protein daily ration raw material puffing device

Abstract

The utility model relates to a meat duck low-protein daily ration raw material puffing device which effectively solves the problems that puffing equipment is unreasonable in pressure adjusting mode and low in curing efficiency. According to the technical scheme, the device comprises a conveying auger and a pressurizing assembly; the conveying auger comprises a cylindrical first shell and a rotating shaft coaxially installed in the first shell, a spiral blade is fixed to the outer wall of the rotating shaft, a cone is coaxially fixed to the end, close to the pressurizing assembly, of the rotating shaft, the pressurizing assembly comprises a cylindrical second shell, and the first shell and the second shell are coaxially fixed to the cone. A cylindrical adjusting block is coaxially screwed in the second shell through threads, a material channel is formed in the axis of the adjusting block, a conical horn mouth is formed in the end, close to the conveying auger, of the material channel, a cone at the end of the rotating shaft extends into the horn mouth, and a throttling gap is formed between the outer wall of the cone and the inner wall of the horn mouth; uniform-speed discharging can be guaranteed in the adjusting process, the extrusion force adjusting precision is guaranteed, and the axial distribution uniformity of extrusion force is improved.

Description

Technical Field

[0001] This utility model relates to the field of feed processing equipment, specifically a device for extruding low-protein diet raw materials for broiler ducks. Background Technology

[0002] Feed extrusion refers to the process where raw materials are pressurized, heated, and cooked under the extrusion action of an extrusion device, and then instantly expanded and cooled to harden and solidify after being extruded from a nozzle. Patent application number CN200610039218.3 discloses an extrusion-type extrusion device, which uses a auger to transport materials, pressurizes them through a throttling orifice on a flow-stabilizing extruder at the auger's output end, and adjusts the flow area of ​​the throttling orifice by the length of a radially arranged piston extending into it, thereby regulating the extrusion pressure. This method has the following drawbacks:

[0003] Firstly, although the piston can reduce the flow area of ​​the throttling orifice after it extends into the orifice, it also disrupts the smooth flow of the channel, which can easily lead to the discharge of material in spurts, affecting the stability of the discharge and consequently the stability of the extrusion pressure.

[0004] Secondly, the compressive pressure during auger conveying decreases from the input end to the output end, and the raw material pressurization and maturation are too concentrated at the output end of the auger, resulting in a small degree of material pressurization and low maturation efficiency in the front end. Summary of the Invention

[0005] This invention provides a device for extruding low-protein feed ingredients for broiler ducks, aiming to solve the problem of unreasonable pressure regulation and low cooking efficiency in extrusion equipment.

[0006] The technical solution includes a conveying auger and a pressurizing component, with the pressurizing component installed at the output end of the conveying auger. The conveying auger includes a cylindrical first housing and a rotating shaft coaxially installed inside the first housing. Helical blades are fixed on the outer wall of the rotating shaft. A cone is coaxially fixed at the end of the rotating shaft near the pressurizing component, with the small end of the cone facing the pressurizing component. The pressurizing component includes a cylindrical second housing. A cylindrical adjusting block is screwed coaxially into the second housing via threads. A material channel is opened at the axis of the adjusting block. A conical flare is opened at the end of the material channel near the conveying auger. The cone at the end of the rotating shaft extends into the flare, and the outer wall of the cone and the inner wall of the flare form a throttling gap.

[0007] The inner wall of the first housing is conical, and its diameter gradually decreases from the input end to the output end. The diameter of the spiral blade also decreases synchronously with the diameter of the inner wall of the first housing.

[0008] The pitch of the spiral blade gradually decreases from the input end to the output end.

[0009] The second housing has an arc-shaped groove on its side wall, through which the adjusting block can be rotated.

[0010] The outer wall of the adjustment block has several radial holes evenly distributed around its circumference.

[0011] Both ends of the side wall of the adjustment block are fitted with sealing rings between them and the inner wall of the second housing.

[0012] This application uses a conical throttling gap for throttling, and adjusts the size of the throttling gap by axial movement of the adjusting block, thereby adjusting the extrusion pressure. During the adjustment process, the material channel remains regular and unobstructed, thus ensuring uniform discharge and accurate adjustment of the extrusion pressure.

[0013] The conical inner wall of the first shell and the conical spiral blades, along with the gradually decreasing pitch of the spiral blades, provide the material with an auxiliary extrusion force that is evenly distributed in the axial direction, improving the uniformity of the extrusion force distribution in the axial direction. This allows the material to be extruded throughout the entire section of the conveying auger, thereby improving the curing efficiency. Attached Figure Description

[0014] Figure 1 This is the front sectional view of the present invention.

[0015] Figure 2 This is a perspective view of the present invention.

[0016] Figure 3 This is a three-dimensional view of the rotating shaft and the helical blades.

[0017] Figure 4 This is a three-dimensional view of the second shell.

[0018] Figure 5 This is a 3D view of the adjustment block. Detailed Implementation

[0019] Referring to the accompanying drawings, this utility model includes a conveying auger and a pressurizing component. The pressurizing component is installed at the output end of the conveying auger. The pressurizing unit increases the extrusion pressure of the material through a throttling effect and adjusts the extrusion pressure of the material through the flow area. The conveying auger includes a cylindrical first housing 1 and a rotating shaft 2 coaxially installed inside the first housing 1. A spiral blade 3 is fixed on the outer wall of the rotating shaft 2. A cone 4 is coaxially fixed at the end of the rotating shaft 2 near the pressurizing component, with the small end of the cone 4 facing the pressurizing component. The pressurizing component includes a cylindrical second housing 5. 5 is coaxially installed at the outlet end of the first housing 1 via a flange. A cylindrical adjusting block 6 is screwed coaxially inside the second housing 5 via a thread. A material channel 7 is opened at the axis of the adjusting block 6. A conical horn 8 is opened at the end of the material channel 7 near the conveying auger. The cone 4 at the end of the rotating shaft 2 extends into the horn 8, and the outer wall of the cone 4 and the inner wall of the horn 8 form a throttling gap. The material output by the conveying auger enters the material channel 7 through this throttling gap. By rotating the adjusting block 6, the adjusting block 6 can be moved axially, thereby adjusting the size of the throttling gap between the horn 8 and the cone 4, thereby adjusting the extrusion pressure.

[0020] The inner wall of the first housing 1 is conical, and its diameter gradually decreases from the input end to the output end. The diameter of the spiral blade 3 also decreases synchronously with the diameter of the inner wall of the first housing 1. This makes the conveying channel of the conveying auger gradually smaller, providing the material with an auxiliary extrusion force that is evenly distributed in the axial direction.

[0021] The pitch of the spiral blade 3 gradually decreases from the input end to the output end, that is, the conveying speed gradually decreases from the input end to the output end, which can also provide the material with an auxiliary extrusion force that is evenly distributed in the axial direction.

[0022] The second housing 5 has an arc-shaped groove 9 on its side wall, through which the adjusting block 6 can be rotated to adjust the axial position of the adjusting block 6.

[0023] The outer wall of the adjusting block 6 has several radial holes 10 evenly distributed around its circumference. When the adjusting block 6 is rotated, a long rod can be inserted into the radial holes 10 for rotation.

[0024] Both ends of the side wall of the adjusting block 6 are fitted with sealing rings 11 between the adjusting block 6 and the inner wall of the second housing 5 to prevent material from entering the mating thread between the adjusting block 6 and the second housing 5.

[0025] In use, the material is fed into the conveying auger from the input end and conveyed to the output end by the spiral blades 3, and then enters the pressurization component. Due to the throttling effect of the throttling gap between the cone 4 and the horn 8, the material is pressurized, heated and matured, and then conveyed to the rear through the material channel 7. The pressurization component is connected to a cooling device and nozzles for granulation. These are all existing technologies and will not be described in detail in this application.

[0026] When it is necessary to adjust the extrusion pressure, the adjusting block 6 is rotated through the arc groove 9 to make the adjusting block 6 move axially. If the adjusting block 6 moves away from the cone 4, the throttling gap between the cone 4 and the bell mouth 8 increases and the extrusion pressure decreases. Conversely, if the adjusting block 6 moves closer to the cone 4, the throttling gap between the cone 4 and the bell mouth 8 decreases and the extrusion pressure increases.

[0027] This application uses a conical throttling gap for throttling. The size of the throttling gap is adjusted by the axial movement of the adjusting block 6, thereby adjusting the extrusion pressure. During the adjustment process, the material channel remains regular and unobstructed, thus ensuring uniform discharge and accurate adjustment of the extrusion pressure.

[0028] Through the conical inner wall of the first housing 1 and the conical spiral blades 3, as well as the gradually decreasing pitch of the spiral blades 3, the auxiliary extrusion force that is evenly distributed in the axial direction can be provided to the material, thereby improving the uniformity of the extrusion force distribution in the axial direction and enabling the material to be extruded throughout the entire section of the conveying auger, thereby improving the curing efficiency.

Claims

1. A meat duck low-protein daily ration raw material puffing device, comprising a conveying auger and a pressurizing assembly, the pressurizing assembly being installed at the output end of the conveying auger; the conveying auger comprises a cylindrical first shell and a rotating shaft coaxially installed in the first shell, the outer wall of the rotating shaft being fixed with helical blades, characterized in that, The end of the rotating shaft near the pressurizing assembly is coaxially fixed with a cone, the small end of the cone faces the pressurizing assembly, the pressurizing assembly comprises a cylindrical second shell, a cylindrical adjusting block is coaxially screwed in the second shell, a channel is formed at the axis of the adjusting block, a conical horn is formed at the end of the channel near the conveying screw, the cone at the end of the rotating shaft extends into the horn and the outer wall of the cone and the inner wall of the horn form a throttling gap.

2. The low-protein daily diet raw material puffing device for meat duck according to claim 1, characterized in that, The inner wall of the first shell is conical and the diameter gradually decreases from the input end to the output end, and the diameter of the helical blade also gradually decreases synchronously with the diameter of the inner wall of the first shell.

3. The low-protein daily diet raw material puffing device for meat duck according to claim 1, characterized in that, The pitch of the helical blade gradually decreases from the input end to the output end.

4. The low-protein daily diet raw material puffing device for meat duck according to claim 1, characterized in that, Arc-shaped grooves are formed on the side wall of the second shell, and the adjusting block can be rotated through the arc-shaped grooves.

5. The low-protein daily diet raw material of meat duck according to claim 4, characterized in that, A plurality of radial holes are uniformly distributed on the outer wall of the adjusting block.

6. The low-protein daily diet raw material puffing device for meat duck according to claim 1 or 4 or 5, characterized in that, Sealing rings are installed between the side wall of the adjusting block and the inner wall of the second shell at both ends.

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