Fishery feed multilayer screening device

Abstract

The utility model discloses a fishery feed multi-layer screening device, which belongs to the technical field of screening equipment and comprises a base, a vibrating mechanism is arranged in an inner cavity of the base, a screening frame is arranged right above the vibrating mechanism, a sealing cover is detachably mounted at the top of the screening frame, a discharging mechanism is fixed on the sealing cover through a support, and the discharging mechanism is fixed on the base. A screen mesh is arranged in the inner wall of the screen frame; the scraping and washing mechanism composed of the connecting shaft, the roller shaft, the scraping plate, the rubber sleeve, the separating sleeve and the like is additionally arranged, the scraping and washing mechanism can synchronously rotate on the top of the screen along with the discharging mechanism, the roller shaft is matched with the vibrating screen while rotating, particles blocked in meshes are pressed down through the protrusions arranged on the outer wall of the roller shaft, smooth discharging is kept, and the screening efficiency is improved. And meanwhile, the scraping plate scrapes materials on the inner wall of the screen frame, the inner wall is kept clean, the materials accumulated at the internal corner of the bottom of the inner wall are pushed to the discharging opening, the discharging speed of the screened materials is increased, efficient and stable use of the screening device is achieved, and maintenance work is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of screening equipment, especially to a multi-layer screening device for fish feed. BACKGROUND

[0002] Fish feed refers to feed specially designed for aquatic animals to meet their healthy growth at different growth stages and nutritional needs. The main components of fish feed include protein, fat, vitamins and minerals, which are essential for the growth, immunity and health of aquatic animals.

[0003] During the processing of fish feed, the treatment of raw materials and the treatment of feed particles after granulation all require screening devices to ensure that the feed meets the high-quality growth of aquatic organisms.

[0004] The existing fish feed screening device, when in use, due to the small particle size of the feed particles, is prone to wall hanging and eye blocking in the screen, which not only affects the normal discharge of the feed, but also requires constant downtime for cleaning, especially for the screening of powder, which accumulates a lot of material in the inner wall of the equipment, which is not conducive to the subsequent discharge of the screened material.

[0005] To solve the above problems, a multi-layer fish feed screening device is proposed. CONTENT OF THE UTILITY MODEL

[0006] The main purpose of the utility model is to provide a multi-layer fish feed screening device to solve the problems mentioned in the background technology.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A multi-layer fish feed screening device, comprising a base, a vibration mechanism is arranged in the inner cavity of the base, a screen frame is arranged directly above the vibration mechanism, a sealing cover is detachably installed on the top of the screen frame, a discharging mechanism is fixed on the sealing cover through a support, a screen is arranged in the inner wall of the screen frame, and a scraping and washing mechanism is arranged on the top of the screen.

[0009] The vibration mechanism comprises a spring fixedly connected with the base, the top of the spring is fixedly connected with the bottom of the screen frame, a transmission rod is welded and fixed at the center of the bottom of the screen frame, a transmission ring is integrally fixed at one end of the bottom of the transmission rod, and a vibration motor is clamped and fixed in the transmission ring.

[0010] The discharging mechanism comprises a hopper for storing materials, a drive shaft is rotatably installed at the center of the inside of the hopper, and a connecting shaft is threadedly connected to the bottom of the drive shaft.

[0011] The scraping mechanism includes a separation sleeve threadedly connected to the connecting shaft. Supporting short rods are fixed on both sides of the outer wall of the separation sleeve. A roller shaft is rotatably connected to the free end of the supporting short rods. A scraper is rotatably and slidably installed on the inner wall of the end of the roller shaft away from the supporting short rods.

[0012] Furthermore, the screen is provided in three sets, and the screen is composed of a screen surface and a screen frame. The screen frame is installed with the protruding ring on the inner wall of the screen frame by screws.

[0013] Furthermore, excitation blocks are nested on both the top and bottom shafts of the vibration motor.

[0014] Furthermore, a bearing is fitted on the outer wall of the drive shaft, and cross braces are fixed on both sides of the outer wall of the bearing. The contact surfaces of the cross braces and the inner wall of the screen frame are fixed.

[0015] Furthermore, a transmission assembly is nested at the top of the drive shaft, and a feeding motor fixed to the outer wall of the hopper is installed on one side of the transmission assembly. A spiral feeding blade located at the feeding port of the hopper is integrally welded to the outer wall of the drive shaft.

[0016] Furthermore, the scraper slides and presses against the inner wall of the screen frame through the elastic component in the inner cavity of the roller shaft, and a rubber sleeve is clamped and fixed at the bottom of the separating sleeve, with the inner wall of the rubber sleeve fitted onto the connecting shaft.

[0017] Furthermore, the inner annular groove of the rubber sleeve is movably connected to the mesh surface, and four sets of discharge pipes are provided on the outer wall of the screen frame.

[0018] The beneficial technical effects of this utility model are as follows:

[0019] This invention adds a scraping mechanism composed of a connecting shaft, roller shaft, scraper, rubber sleeve, and separation sleeve. This mechanism rotates synchronously with the feeding mechanism on top of the screen. As the roller shaft rotates, it works in conjunction with the vibrating screen. The protrusions on the outer wall of the roller shaft press down the particles blocking the mesh, ensuring smooth feeding. At the same time, the scraper removes material from the inner wall of the screen frame, keeping the inner wall clean. It also pushes the material accumulated at the bottom corner of the inner wall towards the discharge port, accelerating the discharge speed of the screened material. This invention achieves efficient and stable use of the screening device and reduces maintenance work. Attached Figure Description

[0020] Figure 1 This is a front view schematic diagram of a preferred embodiment of a multi-layer screening device for fishery feed according to the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a preferred embodiment of a multi-layer screening device for fishery feed according to the present invention;

[0022] Figure 3 This is a schematic diagram of the scraping mechanism in a preferred embodiment of a multi-layer screening device for fishery feed according to the present invention;

[0023] Figure 4 This is a schematic diagram of the vibration mechanism in a preferred embodiment of a multi-layer screening device for fishery feed according to the present invention.

[0024] Figure 5 This is a front sectional view of the connection relationship between the connecting shaft, roller shaft, scraper, rubber sleeve and screen in a preferred embodiment of a multi-layer screening device for fishery feed according to the present invention.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Base; 2. Screen frame; 3. Discharge pipe; 4. Sealing cover; 5. Feeding mechanism; 501. Feeding motor; 502. Transmission assembly; 503. Cross brace; 504. Drive shaft; 505. Spiral feeder blade; 506. Connecting shaft; 6. Vibration mechanism; 601. Vibration motor; 602. Vibration block; 603. Spring; 604. Transmission rod; 605. Transmission ring; 7. Scraping mechanism; 701. Roller; 702. Scraper; 703. Rubber sleeve; 704. Separation sleeve; 705. Support rod; 8. Screen. Detailed Implementation

[0027] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0028] like Figures 1-5As shown, this embodiment provides a multi-layer screening device for fishery feed, including a base 1. A vibration mechanism 6 is installed in the inner cavity of the base 1. A screen frame 2 is installed directly above the vibration mechanism 6. A sealing cover 4 is detachably installed on the top of the screen frame 2. A feeding mechanism 5 is fixed to the sealing cover 4 by a bracket. A screen mesh 8 is installed in the inner wall of the screen frame 2. A scraping mechanism 7 is installed on the top of the screen mesh 8. The vibration mechanism 6 includes a spring 603 fixedly connected to the base 1. The top of the spring 603 is fixedly connected to the bottom of the screen frame 2. A transmission rod 604 is welded and fixed at the center of the bottom of the screen frame 2. A transmission ring 605 is integrally fixed at one end of the bottom, and a vibration motor 601 is clamped and fixed inside the transmission ring 605; the feeding mechanism 5 includes a hopper for storing materials, and a drive shaft 504 is rotatably installed at the center of the hopper, and a connecting shaft 506 is threaded to the bottom of the drive shaft 504; the scraping mechanism 7 includes a separating sleeve 704 threaded to the connecting shaft 506, and support rods 705 are fixed on both sides of the outer wall of the separating sleeve 704. A roller shaft 701 is rotatably connected to the free end of the support rods 705, and a scraper 702 is rotatably and slidably installed on the inner wall of the end of the roller shaft 701 away from the support rods 705.

[0029] In the above structure, after the vertical vibration motor 601 drives the exciter block 602 to rotate centrifugally, the vibration source is transmitted to the top screen frame 2 through the transmission ring 605 and the transmission rod 604. The screen frame 2 makes three-dimensional movements of vertical, horizontal and inclined on the spring 603. The screen surface drives the feed to make outward involute movements. Then, the feed that falls is screened and moves along the outer edge of the screen frame 2 and is discharged from the discharge pipe 3. The feed inlet of the discharge pipe 3 is provided with a mesh surface with the same mesh number as the screen 8 in the same layer to prevent the feed that enters from being discharged directly from the discharge pipe 3 without being screened.

[0030] The screen 8 is set in three sets. The screen 8 consists of a screen surface and a screen frame. The screen frame is installed with the raised ring on the inner wall of the screen frame 2 by screws. Both the screen surface and the screen frame are made of stainless steel, which is high in strength and corrosion resistant.

[0031] Vibration motor 601 has excitation blocks 602 nested on both the top and bottom shafts. The two sets of excitation blocks 602 can adjust the amplitude and vibration angle.

[0032] A bearing is fitted on the outer wall of the drive shaft 504. Horizontal support rods 503 are fixed on both sides of the outer wall of the bearing. The contact surface between the horizontal support rods 503 and the inner wall of the screen frame 2 is fixed. The bearing can limit and support the drive shaft 504 at the center of the hopper, maintaining full contact with the material, thereby driving the bottom threaded discharge blades to discharge material stably.

[0033] The top of the drive shaft 504 is also nested with a transmission assembly 502, which is a pulley and belt structure. A feeding motor 501 fixed on the outer wall of the hopper is installed on one side of the transmission assembly 502. A spiral feeding blade 505 located at the feeding port of the hopper is integrally welded on the outer wall of the drive shaft 504. The feeding motor 501 is a stepper motor with adjustable speed, so that the drive shaft 504, the connecting shaft 506 and the scraping mechanism 7 can rotate at a suitable speed for feeding and scraping operations.

[0034] The scraper 702 slides and presses against the inner wall of the screen frame 2 through the elastic component in the inner cavity of the roller 701. The bottom of the separating sleeve 704 is clamped and fixed with a rubber sleeve 703. The inner wall of the rubber sleeve 703 is sleeved on the connecting shaft 506. The column shaft at one end of the scraper 702 slides and is limited in its installation with the inner wall of the roller 701. At the same time, the column shaft is pressed by the telescopic spring to maintain contact with the wall of the screen frame 2. The roller 701 is supported in the middle by the support rod 705. When the connecting shaft 506 revolves, the roller 701 contacts and rubs against the material to achieve rotation. At the same time, it maintains the compression and dispersion of the feed, which is conducive to the smooth flow of the screen 8.

[0035] In another embodiment, when disassembling the device, the connecting shaft 506 is threadedly separated from the drive shaft 504, the sealing cover 4 and its top feeding mechanism 5 are removed, and then the screws around each layer of screen 8 are removed, the separating sleeve 704 is threadedly separated from the connecting shaft 506 (driving the rubber sleeve 703 to rotate synchronously in the center of the screen), and then the bottom rubber sleeve 703 and its screen 8 slide out from the connecting shaft 506 together. The subsequent screens 8 are removed in the same way, thus realizing the disassembly of the device.

[0036] The internal annular groove of the rubber sleeve 703 is movable with the mesh surface. Four sets of discharge pipes 3 are provided on the outer wall of the screen frame 2. With this configuration, since the screen 8 vibrates in three dimensions when vibrating, the elastic deformation property of the rubber sleeve 703 can be used to maintain the high-speed rotation of the screen 8 when the mesh surface comes into contact with the inside of the rubber sleeve 703, while not affecting the connection of the connecting shaft 506 through the rubber sleeve 703 and its drive connection with the bottom scraping mechanism 7.

[0037] Working principle of this device: When in use, this device is connected to an external power supply and an external control device. Fishery feed is put into the hopper, and the feeding motor 501 and the vibration motor 601 are started.

[0038] The feeding motor 501 drives the drive shaft 504 to rotate at the center of the hopper via the transmission assembly 502. The feed is pushed down by the spiral feeding blade 505 and enters the first layer of screen 8 inside the screen frame 2 after passing through the sealing cover 4. The connecting shaft 506, which is threaded to the bottom of the drive shaft 504, rotates synchronously. Through the separation sleeve 704, it drives the roller shafts 701 on both sides to revolve at a position of 1mm on the screen surface. At the same time, the roller shafts 701 are supported by the support short rod 705 and rotate, which evenly disperses the feed that falls in. With the three-dimensional vibration of the screen 8, the feed is quickly screened and discharged. At the same time, a retractable scraper 702 is rotated and squeezed in the inner wall of one end of the roller shaft 701. The scraper 702 is attached to the inner wall of the screen frame 2 and is 2mm above the bottom screen 8. Following the revolution of the connecting shaft 506, it scrapes off the material on the inner wall of the screen frame 2. At the same time, it accelerates the push of the screened feed that has accumulated at the bottom of the screen frame 2 and the inside corner of the screen 8 towards the discharge pipe 3, thereby increasing the discharge speed. Similarly, the scraping mechanism 7 at the top of the subsequent second and third layer screens 8 also works in the same way.

[0039] The above structure ensures efficient screening of fish feed while avoiding the drawbacks of frequent clogging and downtime for maintenance of the screening device, thus improving operational efficiency.

[0040] The above are merely further embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed by this utility model, based on the technical solution and concept of this utility model, shall fall within the protection scope of this utility model.

Claims

1. A multi-layer screening device for fishery feed, comprising a base (1), characterized in that: A vibration mechanism (6) is provided in the inner cavity of the base (1). A screen frame (2) is provided directly above the vibration mechanism (6). A sealing cover (4) is detachably installed on the top of the screen frame (2). A feeding mechanism (5) is fixed on the sealing cover (4) by a bracket. A screen mesh (8) is provided in the inner wall of the screen frame (2). A scraping mechanism (7) is provided on the top of the screen mesh (8). The vibration mechanism (6) includes a spring (603) fixedly connected to the base (1), the top of the spring (603) being fixedly connected to the bottom of the screen frame (2), a transmission rod (604) being welded and fixed at the bottom center of the screen frame (2), a transmission ring (605) being integrally fixed at one end of the bottom of the transmission rod (604), and a vibration motor (601) being clamped and fixed inside the transmission ring (605); The feeding mechanism (5) includes a hopper for storing materials, and a drive shaft (504) is rotatably mounted at the center of the hopper. A connecting shaft (506) is threaded to the bottom of the drive shaft (504). The scraping mechanism (7) includes a separation sleeve (704) threadedly connected to the connecting shaft (506). Supporting short rods (705) are fixed on both sides of the outer wall of the separation sleeve (704). A roller shaft (701) is rotatably connected to the free end of the supporting short rod (705). A scraper (702) is rotatably and slidably installed on the inner wall of the end of the roller shaft (701) away from the supporting short rod (705).

2. The multi-layer screening device for fishery feed according to claim 1, characterized in that: The screen (8) is provided in three sets. The screen (8) is composed of a screen surface and a screen frame. The screen frame is installed with the protruding ring on the inner wall of the screen frame (2) by screws.

3. The multi-layer screening device for fishery feed according to claim 2, characterized in that: Vibration blocks (602) are nested on both the top and bottom shafts of the vibration motor (601).

4. The multi-layer screening device for fishery feed according to claim 3, characterized in that: A bearing is fitted on the outer wall of the drive shaft (504), and a cross brace (503) is fixed on both sides of the outer wall of the bearing. The cross brace (503) is fixed to the contact surface with the inner wall of the screen frame (2).

5. The multi-layer screening device for fishery feed according to claim 4, characterized in that: The top of the drive shaft (504) is also nested with a transmission assembly (502). A feeding motor (501) fixed on the outer wall of the hopper is installed on the outer side of the transmission assembly (502). A spiral feeding blade (505) located at the feeding port of the hopper is integrally welded on the outer wall of the drive shaft (504).

6. The multi-layer screening device for fishery feed according to claim 5, characterized in that: The scraper (702) slides and presses against the inner wall of the screen frame (2) through the elastic component in the inner cavity of the roller (701). The bottom of the separating sleeve (704) is clamped and fixed with a rubber sleeve (703), and the inner wall of the rubber sleeve (703) is sleeved on the connecting shaft (506).

7. A multi-layer screening device for fishery feed according to claim 6, characterized in that: The inner annular groove of the rubber sleeve (703) is movably arranged with the mesh surface, and four sets of discharge pipes (3) are provided on the outer wall of the screen frame (2).

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