Screening device for solid mixed feed additive
By designing a multi-layered screen and a detachable screening device, the problems of inconvenient operation and difficult cleaning of existing screening devices are solved, enabling efficient and convenient multiple screenings and cleaning, and ensuring the purity and particle size consistency of feed additives.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LAOYUFU BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-05-08
AI Technical Summary
Existing screening devices can only perform screening once, requiring multiple screen replacements or the use of multiple devices, which is inconvenient to operate. Furthermore, the screens are difficult to clean, which can easily lead to cross-contamination and blockage, affecting screening efficiency and effectiveness.
Design a screening device for solid mixed feed additives. The device adopts a multi-layer screen with gradually increasing mesh size from top to bottom. The drive mechanism inside the screening box realizes linear reciprocating motion. The screen is detachable for easy cleaning and replacement. The screen is fixed by the box door and a hopper is set to collect the material.
It enables convenient multiple screening operations, avoids cross-contamination and clogging, improves screening efficiency and effectiveness, and ensures product purity and particle size consistency.
Smart Images
Figure CN224208485U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of feed additive production equipment, specifically to a screening device for solid mixed feed additives. Background Technology
[0002] Feed additives refer to small or trace amounts of substances added during feed production, processing, and use. Although used in very small quantities, they have significant effects. Feed additives are essential raw materials in the modern feed industry, significantly contributing to enhancing the nutritional value of basic feeds, improving animal production performance, ensuring animal health, saving feed costs, and improving the quality of livestock products. Because some feed additives cannot be directly added to feed, they require processes such as dilution, pulverization, and drying to mix one or more additives with a carrier or diluent in specific proportions. This improves their flowability, dispersibility, and consistency, resulting in solid-state mixed feed additives to meet the needs of feed processing.
[0003] Solid mixed feed additives cannot be immediately packaged; they need to be sieved according to particle size to remove large impurities or other foreign matter mixed in during production, ensuring the quality stability of the final product. Sieving also removes excessively large or small particles, improving the particle size consistency of the final product. Consistent particle size helps improve the mixing effect between the feed additive and the feed, allowing the various components of the feed additive to be more evenly distributed in the feed. Consistent particle size also ensures that the particle size of the feed additive meets specific requirements, avoiding the impact of excessively large or small particles on animal feeding and digestion, thus ensuring the uniformity and effectiveness of the feed additive in subsequent use.
[0004] Currently, screening devices are mainly used to screen solid mixed feed additives. However, existing screening devices have the following problems in actual use:
[0005] 1) Existing screening devices can only perform one screening operation on feed additives. If it is necessary to screen feed additives into multiple particle sizes, multiple screening devices with different mesh sizes are required, or screens with different mesh sizes are replaced on the same screening device for multiple screenings, which leads to inconvenience in operation and affects screening efficiency.
[0006] 2) Existing screening devices are inconvenient to clean. If different types of feed additives need to be screened, uncleaned screens can easily cause cross-contamination, making it impossible to guarantee the purity of the final product. Furthermore, during long-term use, screens are easily clogged by feed additives, and irregular cleaning will affect screening efficiency and effectiveness. Utility Model Content
[0007] The present invention aims to provide a screening device for solid mixed feed additives to solve the technical problem that existing screening devices are inconvenient to clean the screen, which affects screening efficiency and effect.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A screening device for solid mixed feed additives includes a frame and a screening box slidably connected to the frame. A drive mechanism is provided on the frame to drive the screening box to reciprocate linearly. The top of the screening box is connected to a feed hopper, and the bottom and one side of the screening box are open. A door is hinged to one side of the screening box opening. Several connecting grooves are provided on the two side walls of the screening box near the door from top to bottom. The connecting grooves on the two side walls are arranged one-to-one, and screens are slidably inserted into the two opposite connecting grooves. The mesh size of the screens gradually increases from top to bottom. After the door is closed, one side of the screen abuts against the door, and the other three sides of the screen abut against the side walls of the screening box.
[0010] The principles and advantages of this scheme are:
[0011] In practical applications, the feed additives to be screened are added to the screening box through the feed hopper. The drive mechanism is then activated, causing the screening box to reciprocate linearly, thus screening the feed additives. Particles larger than the aperture of the first layer of screens (from top to bottom) remain on the first screen, while the remaining material passes through and falls downwards. Similarly, particles larger than the aperture of the second layer of screens (from top to bottom) remain on the second screen, while the remaining material passes through and continues to fall downwards, and so on. Particles smaller than the aperture of the bottom screen fall out from the bottom of the screening box and are collected using a container. After screening is complete, the drive mechanism is turned off, the box door is opened, and the screens are pulled out one by one from the connecting groove to collect the remaining material.
[0012] 1. This solution sets up multiple layers of screens from top to bottom in the screening box, with the mesh size of the multiple screens gradually increasing from top to bottom. This allows for multiple screenings of feed additives, thereby screening the feed additives into multiple particle sizes as required. It eliminates the need to use multiple screening devices with different mesh sizes, or to change screens of different mesh sizes on the same screening device for multiple screenings. The operation is convenient and helps to improve the screening efficiency of feed additives.
[0013] 2. This solution features multiple connecting slots on the side wall of the screening box, running from top to bottom. The screen is slidably inserted into the corresponding slot to connect to the screening box. The screen is then removed from the slot to disassemble. Both connection and disassembly are very convenient, allowing for regular cleaning of the screen and preventing it from becoming clogged by feed additives during prolonged use. Furthermore, the screen can be cleaned before screening different types of feed additives to avoid cross-contamination, thus improving the screening efficiency and effectiveness.
[0014] 3. After the box door is closed, this solution uses the box door to press the screen against the side wall of the screening box, which can fix the relative position of the screen and the screening box. The structure and operation of limiting the screen are simple and can prevent the screen from shaking relative to the screening box during the screening of feed additives, thereby ensuring the screening effect.
[0015] Preferably, as an improvement, a connecting plate is fixedly connected to the side wall of the connecting groove corresponding to the screen, the thickness of the connecting plate is matched with the height of the connecting groove, and the connecting plate is slidably inserted into the connecting groove.
[0016] Beneficial effects: This solution adds a connecting plate to the side wall of the screen. By sliding the connecting plate into the connecting groove, a detachable connection between the screen and the screening box is achieved, which is simple in structure. Compared with the detachable connection method of directly sliding the screen into the connecting groove, the connecting plate can increase the contact area with the connecting groove, thereby improving the effectiveness of sliding fit. It can also reduce the wear of the screen and help extend the service life of the screen.
[0017] Preferably, as an improvement, a linear guide rail is provided on the frame along the movement direction of the screening box, and a mounting frame is fixedly connected to the bottom of the screening box, with the mounting frame fixedly connected to the slider of the linear guide rail.
[0018] Beneficial effects: This solution achieves a sliding connection between the screening box and the frame through the sliding cooperation of the mounting frame and the linear guide rail. The structure is simple and the operation is reliable.
[0019] Preferably, as an improvement, the screening box is detachably connected to the mounting frame.
[0020] Beneficial effects: This solution allows for the detachable connection between the screening box and the mounting frame. If the screening box malfunctions during prolonged use, it can be removed from the mounting frame for repair or replacement, which improves the convenience of equipment maintenance or reduces the cost of equipment replacement.
[0021] Preferably, as an improvement, the drive mechanism includes a mounting plate and a drive cylinder, the drive cylinder being fixedly connected to the frame via the mounting plate, and the output shaft of the drive cylinder being fixedly connected to the mounting frame.
[0022] Beneficial effects: This solution drives the mounting frame to reciprocate linearly through a drive cylinder, thereby driving the screening box to reciprocate linearly. It has a simple structure, reliable operation, and can effectively screen feed additives in the screening box.
[0023] Preferably, as an improvement, the frame is further provided with a discharge hopper, which is located below the screening box. The cross-sectional area of the discharge hopper gradually decreases from top to bottom. The cross-sectional area of the top of the discharge hopper is larger than the cross-sectional area of the screening box, and the movement trajectory of the screening box is within the range of the top of the discharge hopper.
[0024] Beneficial effects: This solution adds a hopper with a gradually decreasing cross-sectional area below the screening box. During the screening of feed additives, materials falling from the screening box can be collected by the hopper for easy collection. Furthermore, the relative dimensions of the hopper and screening box, as well as the movement trajectory of the screening box, ensure that all materials falling from the screening box enter the hopper for collection, preventing spillage and waste.
[0025] Preferably, as an improvement, elastic strips are provided on the inner wall of the box door corresponding to the positions of each screen, so that when the box door is closed, one side of the screen abuts against the elastic strip.
[0026] Beneficial effects: This solution sets elastic strips on the inner wall of the box door corresponding to each screen. After the door is closed, the elastic strips contact the screens, pressing the screens against the inner wall of the screening box. This can improve the positional stability of the screens during the screening process, prevent the screens from shaking relative to the screening box, and help improve the screening effect.
[0027] Preferably, as an improvement, a scraper is provided above the screen, with the bottom of the scraper contacting the top of the screen.
[0028] Beneficial effects: This solution features a scraper with its bottom contacting the top of the screen. When the screen is pulled out of the connecting groove, the scraper can scrape the material on the screen into the hopper, allowing for separate collection of materials of different particle sizes after screening. This method is more convenient than removing the screen and then collecting the material on it. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.
[0030] Figure 2 for Figure 1Top view.
[0031] Figure 3 for Figure 1 Right view of the intermediate screening box (door open).
[0032] Figure 4 for Figure 1 Top view of the screening box (top plate of the screening box is not shown).
[0033] Figure 5 Embodiment 2 of this utility model and Figure 3 A structural diagram from the same perspective.
[0034] Figure 6 Embodiment 2 of this utility model and Figure 4 A structural diagram from the same perspective.
[0035] Figure 7 Embodiment 3 of this utility model and Figure 3 A structural diagram from the same perspective.
[0036] Figure 8 Embodiment 3 of this utility model and Figure 4 A structural diagram from the same perspective. Detailed Implementation
[0037] The following detailed description illustrates the specific implementation method:
[0038] The reference numerals in the accompanying drawings include: frame 1, screening box 2, linear guide rail 3, mounting frame 4, mounting plate 5, drive cylinder 6, mounting block 7, mounting hole 8, feed hopper 9, discharge hopper 10, box door 11, connecting groove 12, connecting plate 13, screen 14, elastic strip 15, scraper 16.
[0039] Example 1
[0040] A screening device for solid mixed feed additives, as shown in the attached figure. Figure 1 and Figure 2 As shown, the system includes a frame 1 and a screening box 2 slidably connected to the frame 1. A drive mechanism is provided on the frame 1 to drive the screening box 2 in linear reciprocating motion. Specifically, a linear guide rail 3 is fixedly connected to the top of the frame 1 along the direction of movement of the screening box 2, and a mounting frame 4 is fixedly connected to the bottom of the screening box 2. The mounting frame 4 is fixedly connected to the slider of the linear guide rail 3. The drive mechanism includes a mounting plate 5 and a drive cylinder 6. The drive cylinder 6 is fixedly connected to the frame 1 via the mounting plate 5. Specifically, the mounting plate 5 is fixedly connected to the top of the frame 1, and the drive cylinder 6 is horizontally fixedly connected to the top of the mounting plate 5. The output shaft of the drive cylinder 6 is fixedly connected to the side wall of the mounting frame 4.
[0041] In other embodiments, the screening box 2 and the mounting frame 4 are detachably connected. Specifically, a plurality of mounting blocks 7 are fixedly connected to the side wall of the screening box 2. The mounting blocks 7 are supported on the mounting frame 4. Mounting holes 8 are opened vertically on the mounting blocks 7. The mounting frame 4 has connecting holes at the corresponding positions of the mounting holes 8. Bolts are inserted into the mounting holes 8 and the corresponding connecting holes. The mounting blocks 7 and the mounting frame 4 are detachably connected by bolts, thereby realizing the detachable connection between the screening box 2 and the mounting frame 4.
[0042] The top of the screening box 2 is connected to the feed hopper 9. A discharge hopper 10 is also provided on the frame 1, located below the screening box 2, with its top fixedly connected to the frame 1. The cross-sectional area of the discharge hopper 10 gradually decreases from top to bottom to collect feed additives falling from the screening box 2 for centralized collection. The cross-sectional area of the top of the discharge hopper 10 is larger than that of the screening box 2, and the movement trajectory of the screening box 2 is within the range of the top of the discharge hopper 10, ensuring that all feed additives falling from the screening box 2 enter the discharge hopper 10, preventing spillage and waste.
[0043] Combination Figure 3 and Figure 4 As shown, the screening box 2 has an opening at the bottom and on one side, meaning the screening box 2 includes a top plate and three side plates, and a door 11 is hinged to one side of the opening of the screening box 2. Several connecting grooves 12 are horizontally formed along the top to bottom on the two side walls of the screening box 2 near the door 11. The connecting grooves 12 on the two side walls are arranged one-to-one, and a screen 14 is slidably inserted into the two opposite connecting grooves 12. Specifically, a connecting plate 13 is fixedly connected to the side wall of the screen 14 corresponding to the connecting groove 12. The thickness of the connecting plate 13 matches the height of the connecting groove 12, and the connecting plate 13 is horizontally slidably inserted into the connecting groove 12.
[0044] Several vertically arranged screens 14 have a gradually increasing mesh size from top to bottom to achieve graded screening of feed additives. After the door 11 is closed, the side of the screen 14 closest to the door 11 abuts against the door 11, and the side of the screen 14 furthest from the door 11 abuts against the side wall of the screening box 2. The other two sides of the screen 14 abut against the side wall of the screening box 2 through connecting plates 13 in connecting grooves 12, so as to fix the position of the screen 14 in the screening box 2, prevent the screen 14 from shaking relative to the screening box 2 during the screening process, and ensure the screening effect.
[0045] The specific implementation process is as follows:
[0046] In practical applications, the feed additives to be screened are added to the screening box 2 through the feed hopper 9. The drive cylinder 6 is activated, and its output shaft extends and retracts, driving the screening box 2 to perform a linear reciprocating motion, thus screening the feed additives within the screening box 2. Materials with a particle size larger than the aperture of the first layer of screens 14 (from top to bottom) remain on the first layer of screens 14, while the remaining materials pass through and fall downwards. Similarly, materials with a particle size larger than the aperture of the second layer of screens 14 (from top to bottom) remain on the second layer of screens 14, while the remaining materials pass through and continue falling downwards, and so on, achieving step-by-step screening of the feed additives. Materials with a particle size smaller than the aperture of the bottom layer of screens 14 fall from the bottom of the screening box 2 into the discharge hopper 10 for collection. A container is then used to collect this portion of material at the bottom of the discharge hopper 10. After screening, turn off the drive cylinder 6, open the box door 11, and pull out the screens 14 one by one from the connecting groove 12 to collect the materials remaining on the screens 14 separately.
[0047] Example 2
[0048] A screening device for solid mixed feed additives, as shown in the attached figure. Figure 5 and Figure 6 As shown, the difference from Embodiment 1 is that several elastic strips 15 are fixedly connected from top to bottom on the inner wall of the door 11, and the elastic strips 15 are horizontally arranged one-to-one with the screen 14. After the door 11 is closed, the side of the screen 14 closest to the door 11 abuts against the corresponding elastic strip 15 to improve the limiting effect of the screen 14 in the screening box 2, thereby further improving the screening effect. In this embodiment, the elastic strips 15 are made of rubber.
[0049] Example 3
[0050] A screening device for solid mixed feed additives, as shown in the attached figure. Figure 7 and Figure 8 As shown, the difference between this embodiment and Embodiment 2 is that a scraper 16 is provided on the side of the screen 14 near the door 11, with the bottom of the scraper 16 contacting the top of the screen 14. In this embodiment, the scraper 16 is arranged vertically to the screen 14, that is, the scraper 16 is vertically arranged, and both ends of the scraper 16 are fixedly connected to the inner wall of the screening box 2. This solution allows the material on the screen 14 to be scraped off by the scraper 16 during the process of pulling the screen 14 out of the connecting groove 12, so that materials of all particle sizes can fall into the discharge hopper 10 for collection, making it convenient to collect materials from the bottom of the discharge hopper 10, improving operational convenience, and thus further improving screening efficiency.
[0051] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A screening device for a solid mixed feed additive, characterized in that: The device includes a frame and a screening box slidably connected to the frame. The frame is equipped with a drive mechanism for driving the screening box to reciprocate linearly. The top of the screening box is connected to a feed hopper, and the bottom and one side of the screening box are open. A door is hinged to one side of the screening box opening. Several connecting grooves are opened from top to bottom on the two side walls of the screening box near the door. The connecting grooves on the two side walls are arranged one-to-one, and screens are slidably inserted into the two opposite connecting grooves. The mesh size of the screens gradually increases from top to bottom. When the door is closed, one side of the screen abuts against the door, and the other three sides of the screen abut against the side walls of the screening box.
2. The screening device for a solid mixed feed additive according to claim 1, characterized in that: A connecting plate is fixedly connected to the side wall of the connecting groove corresponding to the screen. The thickness of the connecting plate matches the height of the connecting groove, and the connecting plate is slidably inserted into the connecting groove.
3. The screening device for a solid mixed feed additive according to claim 2, characterized in that: A linear guide rail is provided on the frame along the movement direction of the screening box. A mounting frame is fixedly connected to the bottom of the screening box, and the mounting frame is fixedly connected to the slider of the linear guide rail.
4. The screening device for a solid mixed feed additive according to claim 3, characterized in that: The screening box and the mounting frame are detachably connected.
5. The screening device for a solid mixed feed additive according to claim 4, characterized in that: The drive mechanism includes a mounting plate and a drive cylinder. The drive cylinder is fixedly connected to the frame via the mounting plate, and the output shaft of the drive cylinder is fixedly connected to the mounting plate.
6. A screening device for a solid mixed feed additive according to any one of claims 1-5, characterized in that: The frame is also equipped with a discharge hopper, which is located below the screening box. The cross-sectional area of the discharge hopper gradually decreases from top to bottom. The cross-sectional area of the top of the discharge hopper is larger than that of the screening box, and the movement trajectory of the screening box is within the range of the top of the discharge hopper.
7. The screening device for a solid mixed feed additive according to claim 6, characterized in that: The inner wall of the box door is provided with elastic strips corresponding to the positions of each screen. When the box door is closed, one side of the screen abuts against the elastic strip.
8. The screening device for a solid mixed feed additive according to claim 7, characterized in that: A scraper is provided above the screen, with the bottom of the scraper in contact with the top of the screen.