A multi-stage screening device for feed processing

Abstract

The application provides a feed processing multi-stage screening device, and belongs to the field of feed processing. The feed processing multi-stage screening device comprises a bracket with two supporting platforms, a screening box and a control cabinet borne on the top of the bracket, a screening barrel is fixed in the interior of the screening box, one side of the screening box is provided with a feeding pipe for feeding, the interior of the feeding pipe is provided with a screw thread for conveying materials, one side of the screw thread is fixed with a turnover frame for breaking up the agglomerated feed, the turnover frame extends into the interior of the screening barrel and rotates in the interior of the screening barrel. The application can effectively break up the agglomerated feed by rotating the turnover frame in the screening barrel through the screw thread in the feeding pipe, and realizes preliminary screening in cooperation with the coarse filter screen of the screening barrel; the lower screening plate vibrates at high frequency under the drive of the vibration motor, the fine filter screen accurately separates small-particle materials, and solves the problem of incomplete screening caused by agglomeration in traditional devices.

Description

Technical Field

[0001] This application relates to the field of feed processing, and more specifically, to a multi-stage screening device for feed processing. Background Technology

[0002] Multi-stage screening devices for feed processing are key equipment used for grading and screening raw materials or finished products in feed production. By setting up multiple layers of screens with different pore sizes, materials of different particle sizes are separated step by step, thereby removing impurities, ensuring the uniformity of feed particle size, providing qualified raw materials for subsequent processing stages such as crushing and mixing, and improving feed product quality and production efficiency.

[0003] Chinese patent application number 202022125154.7 discloses a multi-stage screening device for feed processing, comprising a rectangular box, with a first motor mounted on both sides of the rectangular box. The first motor is rotatably inserted into a second rotating plate. A second rotating column is rotatably mounted at one end of the second rotating plate, and one end of the second rotating column is rotatably inserted into the first rotating plate. A first rotating column is inserted into one end of the first rotating plate, and an adjusting block is rotatably mounted at one end of the first rotating column. An adjusting plate is mounted at one end of the adjusting block, and one end of the adjusting plate is rotatably mounted on one side of the rectangular box. The two adjusting plates of the above-mentioned utility model are adjustable in angle, so that the feed can be controlled when entering the screening device, reducing the probability of clogging and concentrating the feed screening to avoid a large amount of feed waste. The above-mentioned utility model uses a filter belt and filter screen for feed screening, and a vibration motor is inserted into the side of the filter disc, which can significantly improve the filtration effect and filtration speed of the filter screen.

[0004] The above solution has the following shortcomings: When in use, the angle can be adjusted by adjusting the plate to control the feed. However, the feed is piled up and stored before feeding. During screening, there will be clumps of material in the feed. The existing device cannot effectively break up the clumps of feed, which affects the screening effect. Therefore, it needs to be improved. Utility Model Content

[0005] To overcome the above shortcomings, this application provides a multi-stage screening device for feed processing, which aims to improve the problem that agglomerated materials cannot be effectively broken up, thus reducing the practicality of the device.

[0006] This application provides a multi-stage screening device for feed processing, including a bracket with two supporting platforms, a screening box and a control box supported on the top of the bracket, a screening barrel fixed inside the screening box, a feed pipe for feeding is provided on one side of the screening box, a threaded plate for conveying materials is provided inside the feed pipe, a turning frame for breaking up clumps of feed is fixed on one side of the threaded plate, and the turning frame extends into the screening barrel and rotates inside it.

[0007] In one specific implementation, the screening box is provided with a discharge pipe for discharging large particles on the side away from the feed pipe, and a discharge box is provided at the bottom of the screening box, wherein the discharge box has two discharge ports, wherein the side wall of the discharge box has a discharge port for discharging compliant materials, and a guide plate is fixed at the discharge port on the side wall of the discharge box, and the bottom of the discharge box has a discharge port for discharging small particles.

[0008] In the above process, large particles are easily discharged through the discharge pipe, while compliant materials and small particles are discharged through the two discharge ports of the discharge box respectively. The guide plate assists in the discharge of compliant materials, realizing the classified collection of materials after multi-stage screening.

[0009] In one specific implementation, the connection between the screening box and the discharge box is provided with an interface, wherein a baffle for closing the discharge port on the side wall of the discharge box is inserted into the interface.

[0010] In the above implementation process, the opening and closing of the discharge port on the side wall of the discharge box can be controlled by the cooperation of the plug interface and the baffle, which makes it easy to adjust the timing of discharge of compliant materials according to the screening requirements and improves the operational flexibility.

[0011] In one specific implementation, the end of the screening barrel near the discharge pipe is designed to be open, wherein a cylinder is provided on the outside of the discharge pipe, and a telescopic rod extending into the discharge pipe is provided on the inside of the cylinder, wherein a closing plate matching the opening of the screening barrel is fixed to the extended end of the telescopic rod.

[0012] In the above process, the opening and closing of the screening barrel opening is controlled by using a cylinder to drive the telescopic rod to move the closing plate, and the discharge of large particles can be controlled as needed.

[0013] In one specific implementation, the screening barrel is a barrel-shaped design with a perforated surface, wherein the surface of the screening barrel is covered with a coarse filter screen.

[0014] In the above process, coarse filtration is used to initially screen larger particles in the feed, laying the foundation for subsequent fine screening.

[0015] In one specific implementation, an inclined guide plate is provided inside the screening box below the screening barrel, and a screening plate is provided below the inclined guide plate. The screening plate is also designed to be inclined, and the opening of the inclined guide plate is located above the inclined surface of the screening plate.

[0016] In the above implementation process, by setting an inclined guide plate and an inclined screening plate, the inclined guide plate guides the material filtered by the screening barrel to the screening plate, and the inclined design uses gravity to assist the material flow, so as to realize the material transmission and reception of the secondary screening.

[0017] In one specific implementation, the sieve plate is provided with a support frame and a fine filter screen inside, wherein a vibration motor is fixed at the bottom of the support frame.

[0018] In the above process, fine screening of small particles is achieved through a fine filter screen, and the vibrating motor drives the screening plate to vibrate, thereby improving the fine filtration efficiency and avoiding clogging of the screen.

[0019] In one specific implementation, the bottom of the discharge pipe is provided with a discharge port for discharging large particulate materials.

[0020] In the above process, a large particle discharge port is provided at the bottom of the discharge pipe to provide an independent discharge channel for the large particles screened by the screening barrel, ensuring that the large particles are collected and processed in a centralized manner.

[0021] In one specific implementation, a bucket-shaped feed inlet is fixedly connected to the top of the feed pipe, a drive device is fixed to the side of the feed pipe away from the screening box, and a connecting rod is provided on one side of the threaded plate, wherein the output end of the drive device is fixed to the connecting rod.

[0022] In the above process, the drive device drives the threaded blade to rotate, realizing the automatic transfer of materials in the feed pipe. The turning frame rotates with it to enhance the turning effect of materials in the screening barrel and improve the screening uniformity.

[0023] In one specific implementation, the surface of the sieving box is provided with a transparent observation plate.

[0024] During the above process, the internal screening situation can be directly observed through the transparent observation plate on the surface of the screening box, which facilitates real-time monitoring of the screening progress and equipment operating status, and timely detection and handling of abnormalities.

[0025] Compared with the prior art, the beneficial effects of this application are as follows: 1. In this application, the feed pipe internal threaded plate drives the turning frame to rotate inside the screening barrel, which can effectively break up clumps of feed. Combined with the coarse filter screen of the screening barrel, preliminary screening is achieved. The screening plate below vibrates at high frequency under the drive of the vibrating motor, and the fine filter screen accurately separates small particles of material, solving the problem of incomplete screening caused by clumping in traditional devices.

[0026] 2. In this application, large particles are discharged independently through the discharge pipe, compliant materials are discharged from the discharge port on the side wall of the discharge box through the baffle control, and small particles are collected from the bottom discharge port, realizing accurate classification of three-level materials; the transparent observation plate facilitates real-time monitoring, and the cylinder controls the opening and closing of the screening barrel to adapt to the material discharge requirements of different screening stages, improving the convenience and efficiency of operation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the 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 from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall appearance structure provided in the embodiments of this application; Figure 2 Provided for the implementation of this application Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 A side view structural diagram provided for an embodiment of this application; Figure 4 A front view structural diagram provided for an embodiment of this application; Figure 5 A schematic diagram of the internal structure of the feed pipe and discharge pipe provided for embodiments of this application; Figure 6 Provided for the implementation of this application Figure 5 Enlarged structural diagram at point B; Figure 7 A schematic diagram of the internal structure of the sieve box provided for an embodiment of this application; Figure 8 A schematic diagram of the material turning rack structure provided for an embodiment of this application.

[0029] In the diagram: 1. Bracket; 2. Control box; 3. Screening box; 31. Transparent observation plate; 32. Screening barrel; 33. Inclined guide plate; 34. Screening plate; 35. Vibration motor; 4. Feed pipe; 41. Feed inlet; 42. Drive device; 43. Connecting rod; 44. Threaded plate; 45. Tilting frame; 5. Discharge pipe; 51. Cylinder; 52. Telescopic rod; 53. Closing plate; 6. Discharge box; 7. Guide plate; 71. Insertion interface; 72. Baffle. Detailed Implementation

[0030] The technical solutions in 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.

[0031] Please see Figure 1-8This application provides a multi-stage screening device for feed processing, including a bracket 1 with two supporting platforms, a screening box 3 and a control box 2 supported on top of the bracket 1. The two supporting platforms are reinforced with reinforcing ribs to ensure that the screening box 3 and the control box 2 are placed stably without shaking. The surface of the screening box 3 has a transparent observation plate 31 made of high-transmittance acrylic material, and the edges are fixed to the box body with sealing strips, which allows for direct observation of the screening progress and material status inside, facilitating timely detection of blockages or abnormalities.

[0032] A discharge pipe 5 for discharging large particles is welded to the side of the screening box 3 away from the feed pipe 4. A cylinder 51 is fixed to the outside of the discharge pipe 5 by a bracket. The telescopic rod 52 inside the cylinder 51 extends horizontally into the discharge pipe 5. A closing plate 53 matching the opening of the screening barrel 32 is fixed to the extended end of the telescopic rod 52. The opening of the screening barrel 32 is tightly closed and opened by the telescopic extension of the cylinder 51 to avoid premature leakage of materials during the screening process.

[0033] The bottom of the screening box 3 is bolted to the discharge box 6. The side wall is provided with an inclined discharge port for discharging compliant materials. An inclined guide plate 7 is welded to the discharge port. The bottom of the discharge box 6 is provided with an independent discharge port for small particles. The connection between the screening box 3 and the discharge box 6 is provided with an insertion interface 71. A sealing strip is pasted on the inside of the insertion interface 71. A baffle 72 with a non-slip handle is inserted inside. The opening and closing of the side wall discharge port can be flexibly controlled by inserting and removing the baffle 72 to adapt to the material collection needs of different screening stages.

[0034] The screening box 3 contains a screening barrel 32 fixed inside by bolts. The screening barrel 32 is a cylindrical barrel with a hollowed-out surface, covered with a coarse filter screen made of wear-resistant stainless steel. Inside the screening box 3, below the screening barrel 32, there is an inclined guide plate 33 welded. The surface is polished to reduce resistance, and its lower opening is directly above the inclined surface of the screening plate 34 below. The screening plate 34 is also inclined and has an internal angle steel support frame. The surface is covered with a fine filter screen, and a vibration motor 35 is fixed to the bottom of the support frame by a shock-absorbing pad. It can generate high-frequency low-amplitude vibration, which improves the fine filtration efficiency while preventing material splashing.

[0035] A feeding pipe 4 for feeding material is connected to one side of the screening box 3. A bucket-shaped feeding port 41 is welded to the top, and the bottom is connected to the feeding pipe 4 to prevent material accumulation and residue. A drive device 42 is fixed to the side of the feeding pipe 4 away from the screening box 3. The inside of the feeding pipe 4 is equipped with a threaded plate 44 for conveying material, which can push the material evenly. A connecting rod 43 is welded to one side of the threaded plate 44. The output end of the drive device 42 is fixed to the connecting rod 43 through a coupling, and the drive device 42 is electrically connected to the control box 2 to realize speed control. A tilting frame 45 is fixed to the side of the threaded plate 44 near the screening barrel 32. The tilting frame 45 extends into the screening barrel 32 and rotates synchronously with the threaded plate 44, which can effectively break up clumps of feed and prevent material from accumulating in the screening barrel 32.

[0036] The control box 2 is equipped with a PLC controller, which is electrically connected to the vibration motor 35, the drive device 42, and the cylinder 51. The surface is equipped with a display panel, speed adjustment knob and control buttons, which can adjust the screening speed and vibration frequency. It is also equipped with an emergency stop button to improve operational safety and achieve efficient grading and screening of feed.

[0037] The working principle of this multi-stage screening device for feed processing is as follows: When the device is working, the feed enters the feed pipe 4 through the bucket-shaped feed inlet 41. The drive device 42 drives the threaded plate 44 to push the material through the connecting rod 43. At the same time, the turning frame 45 rotates in the screening barrel 32 to break up the clumps. The coarse filter screen of the screening barrel 32 performs preliminary screening of the material. Large particles are retained in the barrel, and the remaining material slides down to the screening plate 34 through the inclined guide plate 33. The vibration motor 35 drives the screening plate 34 to vibrate at high frequency. The small particles screened by the fine filter screen fall into the bottom discharge port of the discharge box 6. The compliant material is temporarily stored on the screening plate 34 and discharged from the side wall discharge port through the guide plate 7 via the plug-in baffle 72. After screening, the cylinder 51 drives the telescopic rod 52 to drive the closing plate 53 to open the opening of the screening barrel 32. Large particles are discharged through the discharge pipe 5. The control box 2 adjusts the operating parameters of each component through the PLC controller. The transparent observation plate 31 can monitor the screening status in real time.

[0038] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multi-stage screening device for feed processing, characterized in that, It includes a bracket (1) with two supporting platforms, a screening box (3) and a control box (2) supported on the top of the bracket (1), a screening barrel (32) is fixed inside the screening box (3), and a feed pipe (4) for feeding is provided on one side of the screening box (3). A threaded plate (44) for conveying materials is provided inside the feed pipe (4), and a turning frame (45) is fixed on one side of the threaded plate (44), and the turning frame (45) extends into the screening barrel (32) and rotates inside it.

2. The multi-stage screening device for feed processing according to claim 1, characterized in that, The screening box (3) is provided with a discharge pipe (5) for discharging large particles on the side away from the feed pipe (4). The bottom of the screening box (3) is provided with a discharge box (6), which has two discharge ports. The side wall of the discharge box (6) is provided with a discharge port for discharging compliant materials, and a guide plate (7) is fixed at the discharge port on the side wall of the discharge box (6). The bottom of the discharge box (6) is provided with a discharge port for discharging small particles.

3. The multi-stage screening device for feed processing according to claim 2, characterized in that, The connection between the screening box (3) and the discharge box (6) is provided with an insertion interface (71), wherein a baffle (72) for closing the discharge port on the side wall of the discharge box (6) is inserted into the insertion interface (71).

4. The multi-stage screening device for feed processing according to claim 3, characterized in that, The screening barrel (32) is open at one end near the discharge pipe (5). A cylinder (51) is provided on the outside of the discharge pipe (5), and a telescopic rod (52) extending into the discharge pipe (5) is provided on the inside of the cylinder (51). A closing plate (53) matching the opening of the screening barrel (32) is fixed at the extended end of the telescopic rod (52).

5. A multi-stage screening device for feed processing according to claim 4, characterized in that, The screening barrel (32) is a barrel-shaped design with a hollowed-out surface, and the surface of the screening barrel (32) is covered with a coarse filter screen.

6. The multi-stage screening device for feed processing according to claim 5, characterized in that, Inside the sieving box (3), below the sieving barrel (32), there is an inclined guide plate (33), below which is a sieving plate (34), and the sieving plate (34) is also inclined. The opening of the inclined guide plate (33) is located above the inclined surface of the sieving plate (34).

7. A multi-stage screening device for feed processing according to claim 6, characterized in that, The sieve plate (34) is equipped with a support frame and a fine filter screen inside, wherein a vibration motor (35) is fixed at the bottom of the support frame.

8. A multi-stage screening device for feed processing according to claim 7, characterized in that, The bottom of the discharge pipe (5) is provided with a discharge port for discharging large particulate materials.

9. A multi-stage screening device for feed processing according to claim 8, characterized in that, The top of the feed pipe (4) is fixedly connected to a bucket-shaped feed inlet (41), and a drive device (42) is fixed on the side of the feed pipe (4) away from the screening box (3). A connecting rod (43) is provided on one side of the threaded plate (44), wherein the output end of the drive device (42) is fixed to the connecting rod (43).

10. A multi-stage screening device for feed processing according to claim 9, characterized in that, The surface of the sieving box (3) is provided with a transparent observation plate (31).

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