A feed screening device

Abstract

The application provides a feed screening device, relates to the technical field of feed screening, and comprises a box body, a feed inlet is arranged at the top of the box body, a distributing cone and a fine material hopper are sequentially arranged from top to bottom below the feed inlet in the box body, a discharge opening of the fine material hopper extends below the bottom of the box body, a coarse material falling channel is arranged between the fine material hopper and the box body, a coarse material outlet is arranged at the lower part of one side of the box body, a screening assembly is arranged between the distributing cone and the fine material hopper, the screening assembly screens the falling material from the distributing cone, and the fine material falls into the fine material hopper and the coarse material falls into the coarse material falling channel. The present application disperses the concentrated falling material through the distributing cone, so that the material is more evenly distributed on the screening assembly, the contact area and contact opportunity of the material and the screen are increased, and the screening efficiency is improved. Compared with the vibrating stirring screen in the prior art, the present application does not need to disperse the accumulated material through a stirring assembly, the supply of additional power is avoided, and the energy consumption and production cost are reduced.

Description

Technical Field

[0001] This application relates to the field of feed screening technology, and more specifically, to a feed screening device. Background Technology

[0002] In the feed production process, feed screening equipment plays a crucial role. It undertakes the important task of accurately classifying the particle size of finished feed products, producing feed products of different particle sizes through screening operations, effectively meeting the diverse needs of the aquaculture industry.

[0003] However, the feed screening devices currently in widespread use have revealed significant drawbacks in the material feeding stage. Most devices use a centralized method of dropping materials onto the screen, which makes it difficult for the materials to spread evenly and disperse sufficiently on the screen. Large amounts of material accumulate and pile up, severely hindering effective contact between the material and the screen, significantly slowing down the rate at which the material passes through the screen, and greatly reducing screening efficiency. This has an extremely adverse effect on the overall efficiency of feed production and slows down the entire production process.

[0004] To address the challenge of material dispersion, the industry has developed a vibrating mixing screen. This equipment combines vibration and mixing functions during operation. Its mixing device can break up accumulated materials, optimizing their distribution on the screen and improving screening efficiency.

[0005] However, vibrating mixing screens have obvious shortcomings. The operation of their mixing devices relies on an additional power supply, which undoubtedly increases the energy consumption level of the equipment significantly. As the production scale continues to expand and the operating time continues to accumulate, energy costs gradually rise, which invisibly increases the production cost burden of enterprises. Summary of the Invention

[0006] The purpose of this application is to provide a feed screening device that can solve the technical problem that when using a vibrating stirring screen to screen feed, the stirring device needs additional power to drive it, which increases energy consumption. As the production scale expands and the operating time increases, the energy consumption cost continues to rise, which increases the production cost burden of enterprises.

[0007] This application provides a feed screening device, including a box body. A feeding hopper is provided at the top of the box body. A distributing cone and a fine material hopper are arranged sequentially from top to bottom inside the box body, directly below the feeding hopper. The outlet of the fine material hopper extends to the bottom of the box body. A coarse material falling channel is provided between the fine material hopper and the box body. A coarse material outlet is provided on the lower part of one side of the box body. A screening component is provided between the distributing cone and the fine material hopper. The screening component screens the material falling from the distributing cone, causing the fine material to fall into the fine material hopper and the coarse material to fall into the coarse material falling channel.

[0008] Furthermore, the screening assembly includes a screening frame, a screening screen, multiple connecting rods, and multiple springs. The screening frame is a conical hollow skeleton, and the screening screen is conically fixed on the screening frame. An annular connecting plate is fixed on the upper outer side of the fine hopper. The annular connecting plate has through holes corresponding to the connecting rods. The connecting rods are movably inserted into the through holes. The upper end of the connecting rod is fixedly connected to the bottom of the screening frame. A limiting plate is fixed on the lower end of the connecting rod. The diameter of the limiting plate is larger than the inner diameter of the through hole. The springs correspond to the connecting rods and are sleeved on the connecting rods and located between the screening frame and the annular connecting plate.

[0009] Furthermore, a vibration motor is fixedly installed at the bottom of the screening frame.

[0010] Furthermore, the lower edge of the screening frame is located within the coarse material falling channel.

[0011] Furthermore, the box is equipped with a guide cylinder, the upper end of which is fixedly connected to the top of the box. A mounting frame is fixedly installed inside the guide cylinder, and the distributing cone is fixedly installed on the mounting frame.

[0012] Furthermore, the top of the distributing cone is provided with a wear-resistant layer.

[0013] Furthermore, the bottom of the box body is provided with a ramp, and the lower end of the ramp is connected to the coarse material outlet.

[0014] The beneficial effects of this utility model are:

[0015] This invention features a screening component between the distribution cone and the fine hopper, and a coarse material falling channel between the fine hopper and the housing. The distribution cone disperses the concentrated falling material, making it more evenly distributed on the screening component. This increases the contact area and opportunities between the material and the screen, thereby improving screening efficiency. Compared with existing vibrating mixing screens, this invention eliminates the need to break up accumulated material through a mixing component, avoiding the need for additional power supply and reducing energy consumption and production costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0018] Figure 2 These are cross-sectional views of some embodiments of this application;

[0019] Figure 3 This is a top view of the dispensing cone, the feeding cylinder, and the mounting frame in some embodiments of this application;

[0020] The reference numerals in the attached figures are as follows:

[0021] 1. Box body; 2. Feed hopper; 3. Distribution cone; 4. Fine material hopper; 41. Annular connecting plate; 5. Coarse material drop channel; 6. Coarse material outlet; 7. Screening assembly; 71. Screening frame; 72. Screening screen; 73. Connecting rod; 731. Limiting plate; 74. Spring; 8. Vibrating motor; 9. Guide cylinder; 10. Mounting frame; 11. Inclined ramp. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 product of this application is in use. They are only for the convenience of describing this application 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances. Specific Implementation

[0028] like Figure 1 and Figure 2 As shown, this application provides a feed screening device, including a box body 1. A feed hopper 2 is located at the top of the box body 1. Inside the box body 1, directly below the feed hopper 2, a distributing cone 3 and a fine feed hopper 4 are arranged sequentially from top to bottom. The outlet of the fine feed hopper 4 extends to the bottom of the box body 1. A coarse material falling channel 5 is provided between the fine feed hopper 4 and the box body 1. A coarse material outlet 6 is located on the lower side of one side of the box body 1. A screening component 7 is provided between the distributing cone 3 and the fine feed hopper. The screening component 7 screens the material falling from the distributing cone 3, causing the fine material to fall into the fine feed hopper 4 and the coarse material to fall into the coarse material falling channel 5. In use, feed material enters the box body 1 through the feed hopper 2 at the top of the box body 1. The material entering the box body 1 falls vertically onto the distributing cone 3. When the material contacts the distributing cone 3, it will... The material is dispersed in all directions to prevent it from falling in a concentrated manner. After being dispersed by the distribution cone 3, the material reaches the screening component 7. The screening component 7 screens the material according to its particle size. Fine material smaller than the screen hole size can pass through the screening component 7 smoothly and continue to fall into the fine material hopper 4 below. It is discharged from the box 1 through the discharge port of the fine material hopper 4. Coarse material larger than the screen hole size is intercepted by the screening component 7 and slides down the screening component 7 in all directions. Finally, it falls into the coarse material falling channel 5 between the fine material hopper 4 and the box 1, and is then discharged from the coarse material outlet 6 at the bottom of the side of the box 1. This achieves the separation of coarse and fine materials. Compared with the vibrating mixing screen in the prior art, it is not necessary to break up the accumulated material through the mixing component, avoiding the need for additional power supply, reducing energy consumption and production costs.

[0029] like Figure 2As shown, the screening assembly 7 includes a screening frame 71, a screening screen 72, multiple connecting rods 73, and multiple springs 74. The screening frame 71 is a conical hollow skeleton. The screening screen 72 is conical and fixed on the screening frame 71. An annular connecting plate 41 is fixed on the upper outer side of the fine hopper 4. The annular connecting plate 41 has through holes corresponding to the connecting rods 73. The connecting rods 73 are movably inserted into the through holes. The upper end of the connecting rod 73 is fixedly connected to the bottom of the screening frame 71. A limiting plate 731 is fixed on the lower end of the connecting rod 73. The diameter of the limiting plate 731 is larger than the inner diameter of the through hole. The springs 74 correspond to the connecting rods 73. The springs 74 are sleeved on the connecting rods 73 and located between the screening frame 71 and the annular connecting plate 41. When the material dispersed from the distributing cone 3 falls onto the screening assembly 7, the material can be lifted by its own gravity and the inertia of falling. The material gradually spreads outwards along the conical surface of the screening mesh 72. Fine materials smaller than the mesh size of the screening mesh 72 pass through the screening mesh 72 and fall directly into the fine material hopper 4 below. Coarse materials larger than the mesh size are intercepted on the screening mesh 72 and continue to move outwards along the conical surface, eventually falling into the coarse material drop channel 5. When the material falls onto the screening mesh 72, it will generate a certain impact force on the screening mesh 72. This impact force will cause the screening frame 71 to move downwards along the connecting rod 73, thereby compressing the spring 74. After the spring 74 is compressed, it will generate a rebound force, causing the screening frame 71 to bounce upwards. On the one hand, this can prevent the material from accumulating on the screening mesh 72, allowing the material to move and be screened more smoothly on the screening mesh 72. On the other hand, the vibration can shake off the material stuck in the mesh, reducing the clogging of the mesh and ensuring continuous and efficient screening.

[0030] like Figure 2 As shown, a vibration motor 8 is fixed at the bottom of the screening frame 71. The vibration generated by the vibration motor 8 when it is working can further disperse the material falling on the screening screen 72, accelerate the screening speed of the material, and reduce the clogging of the screen.

[0031] like Figure 2 As shown, the lower edge of the screening frame 71 is located inside the coarse material falling channel 5. After the material is screened on the screening frame 71, the coarse material will naturally slide down to the lower edge along the conical structure of the screening frame 71 and then fall directly into the coarse material falling channel 5. The setting of the coarse material falling channel 5 forms a relatively closed space to a certain extent. When the coarse material falls, the dust generated will be confined inside the box 1. Compared with the open structure, it can effectively reduce the dust emission and better protect the surrounding environment and the health of the operators.

[0032] like Figure 2 and Figure 3As shown, a guide cylinder 9 is provided inside the box 1. The upper end of the guide cylinder 9 is fixedly connected to the top of the box 1. An installation frame 10 is fixed inside the guide cylinder 9. The distribution cone 3 is fixed on the installation frame 10. The guide cylinder 9 is designed to create a channel for materials to flow from the feed hopper 2 to the distribution cone 3, effectively guiding the materials to fall vertically and accurately onto the distribution cone 3, avoiding disorderly scattering of materials inside the box 1, and ensuring that the materials arrive at the distribution cone 3 in a stable and concentrated state. The installation frame 10 securely connects the distribution cone 3 to the guide cylinder 9, so that the distribution cone 3 maintains a fixed position during the operation of the feed screening device and will not shake or shift due to material impact or equipment vibration, thus ensuring the normal operation of the equipment.

[0033] like Figure 2 As shown, the top of the feed distribution cone 3 is provided with a wear-resistant layer (not shown in the figure). After the feed enters through the feed hopper 2, it will directly impact the top of the feed distribution cone 3. The wear-resistant layer can effectively resist the scouring and friction of the material, reduce the wear on the top of the feed distribution cone 3, and thus extend the service life of the feed distribution cone 3.

[0034] like Figure 2 As shown, the bottom of the box 1 is provided with a ramp 11. The lower end of the ramp 11 is connected to the coarse material outlet 6. The ramp 11 allows the coarse material to slide down automatically along the ramp 11 under the action of gravity and move smoothly to the coarse material outlet 6. This effectively avoids the accumulation of coarse material at the bottom of the box 1, reduces the blockage problem that may be caused by the accumulation of coarse material, and ensures that the coarse material can be discharged continuously and smoothly from the coarse material outlet 6.

[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A feed screening device, characterized by: The device includes a housing, with a feed hopper at the top. Inside the housing, directly below the feed hopper, are a distribution cone and a fine hopper arranged sequentially from top to bottom. The outlet of the fine hopper extends to the bottom of the housing. A coarse material drop channel is provided between the fine hopper and the housing. A coarse material outlet is provided on the lower side of the housing. A screening component is provided between the distribution cone and the fine hopper. The screening component screens the material falling from the distribution cone, causing the fine material to fall into the fine hopper and the coarse material to fall into the coarse material drop channel.

2. A feed screening device according to claim 1, characterized in that The screening assembly includes a screening frame, a screening screen, multiple connecting rods, and multiple springs. The screening frame is a conical hollow skeleton. The screening screen is conical and fixed on the screening frame. An annular connecting plate is fixed on the upper outer side of the fine material hopper. The annular connecting plate has through holes corresponding to the connecting rods. The connecting rods are movably inserted into the through holes. The upper end of the connecting rod is fixedly connected to the bottom of the screening frame. A limiting plate is fixed on the lower end of the connecting rod. The diameter of the limiting plate is larger than the inner diameter of the through hole. The springs correspond to the connecting rods and are sleeved on the connecting rods and located between the screening frame and the annular connecting plate.

3. A feed screening device according to claim 2, characterised in that: A vibration motor is fixed at the bottom of the screening frame.

4. A feed screening device according to claim 2, characterized in that: The lower edge of the screening frame is located within the coarse material falling channel.

5. A feed screening device according to claim 1, characterized in that: The box is equipped with a guide cylinder, the upper end of which is fixedly connected to the top of the box. A mounting frame is fixed inside the guide cylinder, and the distributing cone is fixed on the mounting frame.

6. A feed screening device according to claim 1, characterized in that: The top of the distributing cone is provided with a wear-resistant layer.

7. A feed screening device according to claim 1, characterized in that: The bottom of the box is provided with a ramp, and the lower end of the ramp is connected to the coarse material outlet.

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