A feed mixture grading type impurity removing screen device

Abstract

The application provides a feed mixture material grading impurity removal screen device, which comprises a shell assembly, a magnetic separation mechanism, a first screening mechanism and a second screening mechanism.The shell assembly comprises a top section, a middle section and a bottom section which are sequentially communicated from top to bottom.The feed mixture material impurity removal device removes different impurities mixed in the feed by the multi-stage screening mechanism, wherein the magnetic separation mechanism removes metal impurities in the feed, and the first screening mechanism and the second screening mechanism screen different particle size impurities, thereby solving the problem of poor impurity removal effect of the feed mixture material impurity removal device in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of screening feed mixtures, and in particular to a graded impurity removal screening device for feed mixtures. Background Technology

[0002] Impurity removal from mixed feed is a crucial step in ensuring feed quality, protecting animal health, and improving production efficiency. During harvesting, transportation, and storage, feed ingredients are easily contaminated with impurities such as stones, metal, plastic fragments, and hemp rope. These impurities can not only scratch the animal's digestive tract, causing infection or poisoning, but also damage processing equipment such as grinders and pellet mills, leading to equipment failure, production interruptions, and increased maintenance costs. Therefore, impurity removal is an indispensable step in feed processing to improve feed quality.

[0003] The feed mixture impurity removal device is a key piece of equipment that uses screening technology to efficiently remove impurities such as stones, metals, and plastics from feed through multiple layers of screens and vibration or airflow assistance. It is widely used in the raw material receiving, pretreatment, and finished product quality control stages of feed processing production lines, aiming to improve feed purity, protect animal health, reduce equipment wear, and ensure the quality and safety of feed products.

[0004] Existing feed mixture impurity removal devices mostly rely on a single impurity removal principle (such as magnetic separation, screening, and air separation), which makes it difficult to comprehensively remove various impurities (such as iron filings, stones, light impurities, and dust) from the mixture. For example, magnetic separation can only adsorb magnetic metals, screening is limited by the size of the screen aperture, and air separation is ineffective at separating impurities with similar densities.

[0005] Some devices employ multi-stage processing (such as screen + magnetic strip + vibrator), but the complex structure leads to an increased failure rate, and there may be interference between different impurity removal units, affecting the overall efficiency. Utility Model Content

[0006] The purpose of this invention is to solve the problem of poor impurity removal effect of existing feed mixture impurity removal devices.

[0007] To achieve the above objectives, this application proposes a graded impurity removal and screening device for feed mixtures, comprising:

[0008] A housing assembly, comprising a top section, a middle section, and a bottom section connected sequentially from top to bottom;

[0009] A magnetic separation mechanism, comprising: a permanent magnet drum disposed on the top section and its driving assembly, wherein the driving assembly is fixed by a ground support;

[0010] The first screening mechanism, located in the upper part of the middle section, includes: a power transmission unit, which includes: an external motor and a transmission shaft connected to the output shaft of the external motor; a stirring execution unit, which includes: two sets of symmetrically inclined transmission components and multiple sets of stirring shafts spanning between the transmission components; and a first discharge port located at the bottom end of the transmission components.

[0011] The second screening mechanism, located in the lower part of the middle section, includes: a vibrating screening unit, the vibrating screening unit including: an inclined screen plate, a vibrating motor connected to the screen plate, an elastic support assembly located at the bottom of the screen plate, the edge of the screen plate and the inner wall of the middle section retaining a vibration redundancy gap; and a second discharge port located at the bottom end of the screen plate.

[0012] The feed mixture impurity removal device of this application removes different impurities mixed in the feed by setting up a multi-stage screening mechanism. Among them, the magnetic separation device removes metal impurities in the feed, and the first screening mechanism and the second screening mechanism respectively screen impurities of different particle sizes, which solves the problem of poor impurity removal effect of feed mixture impurity removal devices in the prior art.

[0013] Furthermore, in order to enhance the screening effect of impurities, the middle section of the stirring shaft is set as a turbulence section, and the minimum gap between adjacent stirring shafts is greater than 0.

[0014] Furthermore, the vibration redundancy gap of the sieve plate is achieved by an elastic support assembly, which includes: a support frame disposed at the bottom of the sieve plate and connected to the inner wall of the middle section; and a spring assembly disposed between the support frame and the bottom surface of the sieve plate.

[0015] Furthermore, a T-shaped baffle is provided at the end of the sieve plate that connects to the vibrating motor to prevent material from overflowing to the side.

[0016] Furthermore, to facilitate the collection of the material screened by the first screening mechanism and its entry into the centrifugal separation mechanism, the bottom of the first screening mechanism is provided with a gradually narrowing conical collection chamber, and the end of the conical collection chamber is connected to the centrifugal separation mechanism.

[0017] Furthermore, to achieve centrifugal separation of feed, the centrifugal separation mechanism includes: a split-type flow guide assembly, which includes: an upper baffle welded to the bottom of the conical collection chamber; a lower baffle separately disposed from the upper baffle; a flow guide plate near the bottom surface of the upper baffle and welded to the top of the bottom surface of the lower baffle; a limiting plate surrounding the circumference of the upper baffle and extending to the circumference of the lower baffle; a discharge port disposed on the limiting plate near the highest point of the sieve plate; a drive motor with an output shaft connected to the geometric center of the lower baffle; and a bracket connecting the drive motor to the inner wall of the middle section.

[0018] Furthermore, in order to facilitate the flow of feed in the centrifugal separation mechanism, the guide plates are arranged in a spiral, and the cross-sectional area of ​​the passage along the axis towards the circumference gradually increases.

[0019] The beneficial effects of this application are as follows:

[0020] 1. The feed mixture impurity removal device of this application removes different impurities mixed in the feed by setting up a multi-stage screening mechanism. The magnetic separator removes metal impurities from the feed, and the first screening mechanism and the second screening mechanism screen impurities of different particle sizes respectively, which solves the problem of poor impurity removal effect of the feed mixture impurity removal device in the prior art.

[0021] 2. The feed mixture impurity removal device of this application has a simple structure and is easy to maintain. In particular, when maintaining the vibrating screen plate, it can be disassembled simply by pulling the vibrating screen plate out of the shell. Compared with the multi-stage processing (such as screen + magnetic strip + vibrator) used in some existing devices, the structure is simple, and the first screening mechanism, the second screening mechanism and the magnetic separation device do not affect each other, thus improving the overall efficiency.

[0022] 3. The first screening mechanism of this application is equipped with a stirring shaft with a turbulence section, which, together with the inclined conveying path, can prevent large particles of material from accumulating on the first screening mechanism and affecting the screening effect.

[0023] 4. This application treats metal impurities when the feed enters the device to prevent metal impurities from mixing into the device and damaging it. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a graded impurity removal and screening device for feed mixtures in an embodiment of this application;

[0026] Figure 2 This is a cross-sectional view of a graded impurity removal and screening device for feed mixtures according to an embodiment of this application;

[0027] Figure 3 This is a cross-sectional view from another perspective of a feed mixture grading and impurity removal screening device according to an embodiment of this application;

[0028] Figure 4 for Figure 3 Enlarged view of point a in the middle;

[0029] Figure 5 This is a schematic diagram of the structure of the stirring shaft in an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Shell assembly; 11. Top section; 12. Middle section; 13. Bottom section;

[0032] 2. Magnetic separation mechanism; 21. Permanent magnet drum; 22. Drive assembly; 23. Ground support;

[0033] 3. First screening mechanism; 31. Power transmission unit; 311. External motor; 312. Drive shaft; 32. Stirring execution unit; 321. Transmission assembly; 322. Stirring shaft; 3221. Turbulence section; 33. First discharge port;

[0034] 4. Second screening mechanism; 41. Vibrating screening unit; 411. Screen plate; 412. Vibrating motor; 413. Elastic support assembly; 4131. Support frame; 4132. Spring assembly; 42. Second discharge port; 43. T-shaped baffle;

[0035] 5. Conical collecting chamber;

[0036] 6. Centrifugal separation mechanism; 61. Split-type flow guide assembly; 611. Upper baffle; 612. Lower baffle; 613. Flow guide plate; 614. Limiting plate; 615. Discharge port; 62. Drive motor; 63. Support. Detailed Implementation

[0037] The following will be combined with the appendix Figures 1-5 The embodiments of the technical solutions of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figures 1-5 This application illustrates a graded impurity removal screening device for feed mixtures, which includes:

[0039] The housing assembly 1 includes a top section 11, a middle section 12, and a bottom section 13 that are connected sequentially from top to bottom;

[0040] The magnetic separation mechanism 2 includes: a permanent magnet roller 21 disposed on the top section 11 and its drive assembly 22, wherein the drive assembly 22 is fixed by a ground support 23;

[0041] The first screening mechanism 3, located on the upper part of the middle section 12, includes: a power transmission unit 31, which includes: an external motor 311 and a transmission shaft 312 connected to the output shaft of the external motor 311; a stirring execution unit 32, which includes: two sets of symmetrically inclined transmission components 321 and multiple sets of stirring shafts 322 spanning between the transmission components 321; and a first discharge port 33 located at the bottom end of the transmission components 321.

[0042] The second screening mechanism 4 is located at the lower part of the middle section 12 and includes: a vibrating screening unit 41, the vibrating screening unit 41 including: a screen plate 411, a vibrating motor 412 connected to the screen plate 411, an elastic support assembly 413 located at the bottom of the screen plate 411, the edge of the screen plate 411 and the inner wall of the middle section 12 retain a vibration redundancy gap; and a second discharge port 42 located at the bottom end of the screen plate 411.

[0043] In this embodiment, the shell assembly 1 serves as the main site for feed screening and is divided into a top section 11, a middle section 12, and a bottom section 13 from top to bottom. Different screening units are set in different positions on the shell assembly 1. The magnetic separation mechanism 2 is set in the top section 11 as a pretreatment unit to remove metal impurities from the feed entering the shell assembly 1, so as to prevent metal impurities from mixing into the other screening units and causing damage to the other screening units.

[0044] Specifically, the feed inlet of the magnetic separator 2 is located in the top section 11 and is exposed to facilitate feed feeding. The discharge port of the magnetic separator 2 is directly opposite the first screening mechanism 3, so that the feed that has completed impurity screening falls directly into the first screening mechanism 3 for screening of large particles.

[0045] Specifically, the feed after metal impurities have been removed falls into the first screening mechanism 3. The power drive unit 31 provides power for the rotation of the transmission component 321. As the feed falls into the first screening mechanism 3, the stirring shaft 322 rotates. The middle section of the stirring shaft 322 is set as a turbulence section 3221. The minimum gap between adjacent stirring shafts 322 is greater than 0. As the stirring shaft 322 rotates, the turbulence section 3221 continuously stirs the feed, causing large particles of impurities mixed in the feed and the clumps of feed to be continuously turned over by the stirring of the turbulence section 3221. With the inclined transport path, the stones that are difficult to break are discharged from the first discharge port 33, while the more easily broken clumps of feed are continuously broken up by turning over and fall into the second screening mechanism 4.

[0046] As a preferred embodiment, the power drive unit 31 can be configured as a motor, connected to the input end of the transmission component 321, to provide power for the rotation of the transmission component 321.

[0047] As a preferred embodiment, the transmission component 321 can be configured as a pulley or meshing gears, and protected by a corresponding housing to prevent feed from falling onto the transmission component 321 and causing it to jam.

[0048] Furthermore, the bottom of the first screening mechanism 3 is provided with a gradually concave conical collection chamber 5, and the end of the conical collection chamber 5 is connected to a centrifugal separation mechanism 6. The centrifugal separation mechanism 6 includes: a split-type flow guide assembly 61, which includes: an upper baffle 611 welded to the bottom of the conical collection chamber 5; a lower baffle 612 separately disposed from the upper baffle 611; a flow guide plate 613 near the bottom surface of the upper baffle 611 and welded to the top of the bottom surface of the lower baffle 612; a limiting plate 614 surrounding the circumference of the upper baffle 611 and extending to the circumference of the lower baffle 612; a discharge port 615 disposed on the limiting plate 614 near the highest point of the screen plate 411; a drive motor 62 whose output shaft is connected to the geometric center of the lower baffle 612; and a bracket 63 connecting the drive motor 62 to the inner wall of the middle section 12.

[0049] The guide plate 613 is spirally arranged, and the cross-sectional area of ​​the passage gradually increases from the axis to the circumference.

[0050] Specifically, after being screened by the first screening mechanism 3, the feed passes through the upper baffle 611 via the conical collection chamber 5 and falls onto the top of the lower baffle 612. As the output shaft of the drive motor 62 rotates, the lower baffle 612 drives the guide plate 613 to rotate, causing the feed to be thrown out through the discharge port 615 by centrifugal force and fall onto the screen plate 411 of the second screening mechanism 4. During the throwing process, due to the density difference between the feed raw materials (such as grain particles) and impurities (stones, metal shavings, dust, etc.), the denser impurities receive greater centrifugal force during high-speed rotation and are thrown to the outside; the less dense feed particles are relatively closer to the center, thus achieving stratification and separation to improve the screening effect.

[0051] Furthermore, the vibration redundancy gap of the sieve plate 411 in the second screening mechanism 4 is achieved by an elastic support assembly 413, which includes:

[0052] A support frame 4131 is disposed at the bottom of the sieve plate 411 and connected to the inner wall of the middle section 12;

[0053] Spring assembly 4132 is disposed between support frame 4131 and bottom surface of sieve plate 411.

[0054] The screen plate 411 vibrates continuously with the vibration of the vibrating motor 412 and the spring assembly 4132. The screen plate 411 vibrates continuously in the redundant gap between the outer shells. After further screening, the feed falls into the collection port for collection, while the impurities blocked on the screen plate 411 are discharged through the second discharge port 42 along the inclined screen plate 411 with the vibration.

[0055] Furthermore, a T-shaped baffle 43 is provided at the end of the sieve plate 411 that connects to the vibration motor 412 to prevent material from overflowing to the side.

[0056] In the description of the embodiments of this application, the technical terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this application.

[0057] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set," "equipped with," "connected," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A graded impurity removal and screening device for feed mixtures, characterized in that, include: The housing assembly (1) includes a top section (11), a middle section (12) and a bottom section (13) connected sequentially from top to bottom. The magnetic separation mechanism (2) includes: a permanent magnet roller (21) disposed on the top section (11) and a drive assembly (22), wherein the drive assembly (22) is fixed by a ground support (23); The first screening mechanism (3) is located on the upper part of the middle section (12) and includes: a power transmission unit (31), which includes: an external motor (311) and a transmission shaft (312) connected to the output shaft of the external motor (311); a stirring execution unit (32), which includes: two sets of symmetrically inclined transmission components (321) and multiple sets of stirring shafts (322) spanning between the transmission components (321); and a first discharge port (33) located at the bottom end of the transmission components (321). The second screening mechanism (4) is located at the lower part of the middle section (12) and includes: a vibrating screening unit (41), the vibrating screening unit (41) includes: an inclined screen plate (411), a vibrating motor (412) connected to the screen plate (411), an elastic support assembly (413) located at the bottom of the screen plate (411), the edge of the screen plate (411) and the inner wall of the middle section (12) retain a vibration redundancy gap; and a second discharge port (42) located at the bottom end of the screen plate (411).

2. The feed mixture grading and impurity removal screening device according to claim 1, characterized in that, The middle section of the stirring shaft (322) is set as a turbulence section (3221), and the minimum gap between adjacent stirring shafts (322) is greater than 0.

3. The feed mixture grading and impurity removal screening device according to claim 1, characterized in that, The vibration redundancy gap of the sieve plate (411) is achieved by an elastic support assembly (413), which includes: The support frame (4131) is located at the bottom of the sieve plate (411) and connected to the inner wall of the middle section (12). A spring assembly (4132) is disposed between the support frame (4131) and the bottom surface of the sieve plate (411).

4. The feed mixture grading and impurity removal screening device according to claim 1, characterized in that, The end of the sieve plate (411) connected to the vibrating motor (412) is provided with a T-shaped baffle (43) to prevent material from overflowing.

5. The feed mixture grading and impurity removal screening device according to claim 1, characterized in that, The bottom of the first screening mechanism (3) is provided with a gradually concave conical collection chamber (5), and the end of the conical collection chamber (5) is connected to a centrifugal separation mechanism (6).

6. The feed mixture grading and impurity removal screening device according to claim 5, characterized in that, The centrifugal separation mechanism (6) includes: a split-type flow guide assembly (61), which includes: an upper baffle (611) welded to the bottom of the conical collection chamber (5); a lower baffle (612) separately disposed from the upper baffle (611); a flow guide plate (613) near the bottom surface of the upper baffle (611) and welded to the top of the bottom surface of the lower baffle (612); a limiting plate (614) surrounding the circumference of the upper baffle (611) and extending to the circumference of the lower baffle (612); a discharge port (615) disposed on the limiting plate (614) near the highest point of the screen plate (411); a drive motor (62) with an output shaft connected to the geometric center of the lower baffle (612); and a bracket (63) connecting the drive motor (62) to the inner wall of the middle section (12).

7. The feed mixture grading and impurity removal screening device according to claim 6, characterized in that, The guide plate (613) is spirally arranged, and the cross-sectional area of ​​the passage gradually increases along the axis towards the circumference.

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