A screening device for dog food production and a method of using the same

Abstract

The application relates to a screening device for dog food production and a use method thereof, which comprises a screening device body, and an auxiliary screening mechanism is arranged in the inside of the screening device body; in the application, the auxiliary screening mechanism is arranged, the sieve box realizes periodic knocking action through the cooperation of the fixed plate, the rubber plate and the spring rod one in the reciprocating process, a non-powered disturbance mechanism is constructed, vibration energy can be continuously provided to the sieve surface, the particle jumping frequency is obviously improved, the separation efficiency of the particle materials is accelerated, compared with a traditional static screening device, the screening precision of the application is improved, the sieve hole blockage probability is obviously reduced, the application is suitable for the processing working conditions of dog food particles with high adhesion and high oiliness, meanwhile, the structure does not need an external motor or an additional transmission mechanism, energy consumption and mechanical wear are reduced.

Description

Technical Field

[0001] This invention relates to the field of dog food production technology, and in particular to a screening device for dog food production and its usage method. Background Technology

[0002] Dog food, as an important component of pet food, is typically mass-produced in pellet form. During the production process, after steps such as mixing, extrusion, and drying, the finished pellets need to be screened to remove substandard fragments, excessively large or small pellets, ensuring uniform pellet size and product appearance. This step significantly impacts dog food quality control, packaging efficiency, and market sales.

[0003] In practice, some problems still exist:

[0004] 1. In existing dog food production lines, conventional screening devices mostly use a single horizontal reciprocating motion or a vibration motor drive to complete the screening operation. The screen box itself does not have an independent vibration enhancement structure. When processing dog food pellets with high adhesion or high oil content, the pellets are prone to accumulate on the screen, causing local blockage of the screen surface, reducing screening efficiency, and making it difficult to guarantee the accuracy of pellet grading. At the same time, since the vibration force depends on the motor or additional mechanism, the system structure is complex, energy consumption is high, and frequent operation is prone to fatigue wear of mechanical parts, resulting in a large amount of maintenance work, affecting the stable operation and service life of the equipment, and making it unsuitable for long-term continuous operation.

[0005] 2. During long-term use, the screen surface and inner wall of the screen box of existing screening equipment are easily contaminated by residual grease, debris and other sticky components in the material. This phenomenon is more serious when screening high-oil and high-dust dog food pellets. Traditional cleaning usually relies on manual disassembly of the screen box for washing, which is not only cumbersome, but also prone to damaging the screen surface due to frequent disassembly and assembly, affecting the service life of the equipment. In addition, electrostatic adsorption and pellet accumulation dead corners are easily formed inside the screen box. The lack of an effective disturbance mechanism to break up the piled material causes screening dead corners and material blockage, increasing the number of downtimes and manual maintenance frequency, which makes it difficult to meet the requirements of efficient continuous production and high cleanliness standards of modern dog food production processes. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the aforementioned problems in the prior art, this invention provides a screening device for dog food production and its usage method, solving the problems of insufficient vibration leading to easy clogging, high energy consumption, frequent maintenance and cleaning difficulties, low efficiency, and frequent manual intervention.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solution adopted by the present invention is as follows:

[0010] A screening device for dog food production includes a screening device body, wherein an auxiliary screening mechanism is provided inside the screening device body.

[0011] An auxiliary screening mechanism includes an extension plate, a spring rod, a fixed plate, and a rubber plate. The bottom ends of the two extension plates are fixedly connected to the top ends of the two spring rods, and the top ends of the two fixed plates are fixedly connected to the bottom ends of the two rubber plates.

[0012] The auxiliary screening mechanism also includes a connecting plate, a first transmission wheel, a second transmission wheel, and a transmission belt. The two connecting plates are respectively fixedly connected to both sides of the inner wall of the screening device body.

[0013] Two drive wheels are rotatably connected to the top of the inner walls of the two connecting plates, and two drive wheels are rotatably connected to the bottom of the inner walls of the two connecting plates. A drive belt is sleeved between the drive wheels and the drive wheels.

[0014] One of the drive wheels has a drive shaft fixedly connected to its outer wall. The drive shaft passes through one of the connecting plates, and a locking handle is slidably connected to the outer wall of the drive shaft.

[0015] One of the connecting plates has a locking groove on its outer side, the size of which matches the size of the locking handle, and a storage box is slidably connected to the inner wall of the screening device body.

[0016] A sieve box is slidably connected to the inner wall of the screening device body, and the bottom ends of the two fixing plates are respectively fixedly connected to the two sides of the top of the sieve box.

[0017] One end of each of the two extension plates is fixedly connected to the outer wall of the two connecting plates. A top plate is fixedly connected between the two first transmission wheels and between the two second transmission wheels. Two spring rods are fixedly connected to the outer side of each of the two top plates.

[0018] The free ends of the two adjacent spring rods are fixedly connected to mounting plates, and stirring rods are fixedly connected to the outer sides of the two mounting plates.

[0019] Spring rods are fixedly connected to the inner sides of both top plates, and cleaning brushes are fixedly connected to the free ends of both spring rods. The inner sides of the two cleaning brushes are respectively attached to the upper surface and the lower surface of the sieve box.

[0020] A screening method for dog food production includes the following steps:

[0021] S1: Add the dog food raw materials into the sieve box through the feed inlet, start the drive structure, and make the sieve box move back and forth horizontally in the body of the screening device, so that the raw materials can be initially screened on the sieve box.

[0022] S2: During the movement of the sieve box, the extension plate connected to it drives the rubber plate to compress the spring rod one. During the release process, the spring rod one hits the fixed plate, generating vibration and impact on the sieve box.

[0023] S3: The spring rod at the top of the sieve box changes elastically with the movement of the sieve box, driving the mounting plate and the stirring rod below it to create up-and-down disturbance inside the sieve box, thus interfering with the stirring of the dog food raw materials.

[0024] S4: When cleaning is required, rotating the locking handle drives the drive shaft to rotate. The drive shaft drives drive wheel one and drive wheel two to form a linkage via the drive belt, driving the top plate and its connected cleaning brush to flip.

[0025] S5: The cleaning brush adheres to the upper and lower surfaces of the screen box to perform brushing operations. At the same time, the impact action of the spring rod removes the residue on the inner surface of the screen box, completing the screen cleaning process.

[0026] (III) Beneficial Effects

[0027] The beneficial effects of this invention are:

[0028] 1. In this invention, through the auxiliary sieving mechanism, the sieve box, during its reciprocating motion, achieves periodic striking action through the coordinated action of the fixed plate, rubber plate, and spring rod, creating a non-powered vibration disturbance mechanism. This mechanism continuously provides vibration energy to the sieve surface, significantly increasing the particle jumping frequency and thus accelerating the separation efficiency of granular materials. Compared with traditional static sieving devices, this invention not only improves screening accuracy but also significantly reduces the probability of sieve hole clogging. It is suitable for processing dog food granules with high adhesion and high oil content. At the same time, this structure does not require an external motor or additional transmission mechanism, reducing energy consumption and mechanical wear, and improving the stability and service life of the equipment. It is suitable for widespread application in modern dog food production lines with high continuity and strict dust control.

[0029] 2. In this invention, through the auxiliary sieving mechanism, the stirring rod is dynamically floated by the spring rod and the mounting plate, which can slightly disturb the dog food particles during the screening process, breaking up the particle adhesion caused by oil or static electricity, effectively preventing the formation of dead corners for material accumulation inside the sieve box, and ensuring unobstructed sieve surface. The cleaning structure adopts a transmission wheel, transmission shaft and locking handle control method. The user only needs to rotate the handle to realize the synchronous flipping of the top plate and cleaning brush through the transmission system, so that the brush head can be in contact with the inner and outer surfaces of the sieve box for efficient cleaning. There is no need to disassemble the equipment, which greatly simplifies the maintenance process. The device can flexibly switch between screening and cleaning to ensure the long-term efficient operation of the sieve, while reducing the frequency of manual intervention, enhancing the practicality and intelligence level of the whole machine, and meeting the high standards of equipment stability and hygiene requirements of medium and large dog food production enterprises. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the front side of the screening device body of the present invention;

[0032] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 This is a schematic diagram of the bottom structure of the screening device body of the present invention;

[0034] Figure 5 This is a schematic diagram of the cleaning brush part of the present invention;

[0035] Figure 6 This is a flowchart illustrating the screening method of the present invention.

[0036] [Explanation of Labels in the Attached Image]

[0037] 1. Screening device body; 2. Screen box; 3. Auxiliary screening mechanism; 301. Connecting plate; 302. Drive wheel one; 303. Drive belt; 304. Rubber plate; 305. Fixing plate; 306. Mounting plate; 307. Stirring rod; 308. Top plate; 309. Spring rod one; 310. Extension plate; 311. Drive wheel two; 312. Spring rod two; 313. Drive shaft; 314. Locking handle; 315. Locking groove; 316. Cleaning brush; 317. Spring rod three; 4. Storage box. Detailed Implementation

[0038] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Please refer to Figures 1 to 6 As shown, a screening device for dog food production and its usage method of the present invention include a screening device body 1, and an auxiliary screening mechanism 3 is provided inside the screening device body 1.

[0040] The auxiliary screening mechanism 3 includes an extension plate 310, a spring rod 309, a fixed plate 305, and a rubber plate 304. The bottom ends of the two extension plates 310 are fixedly connected to the top ends of the two spring rods 309, and the top ends of the two fixed plates 305 are fixedly connected to the bottom ends of the two rubber plates 304.

[0041] Optionally, the auxiliary screening mechanism 3 also includes a connecting plate 301, a first transmission wheel 302, a second transmission wheel 311, and a transmission belt 303. The two connecting plates 301 are respectively fixedly connected to both sides of the inner wall of the screening device body 1. In actual implementation, the connecting plate 301 serves as the mounting base, undertaking the structural support and motion guidance functions of the transmission components. By fixing it to the inner walls on both sides of the screening device body 1, the stable and symmetrical arrangement of the first transmission wheel 302 and the second transmission wheel 311 with the transmission belt 303 can be ensured, ensuring balanced force during subsequent linkage transmission and avoiding structural interference or transmission obstruction caused by uneven loading or misaligned installation.

[0042] Optionally, two drive wheels 302 are rotatably connected to the top of the inner wall of the two connecting plates 301, and two drive wheels 311 are rotatably connected to the bottom of the inner wall of the two connecting plates 301. A drive belt 303 is sleeved between the drive wheels 302 and the drive wheels 311.

[0043] Optionally, a drive shaft 313 is fixedly connected to the outer wall of one of the drive wheels 302. The drive shaft 313 passes through one of the connecting plates 301, and a locking handle 314 is slidably connected to the outer wall of the drive shaft 313. In actual implementation, the drive shaft 313 serves as an external force input shaft, which can be rotated by the user through the locking handle 314 to achieve the conversion between internal and external forces. After the drive shaft 313 passes through the connecting plate 301, it can achieve a direct connection between the power input and the transmission component. At the same time, the sliding connection structure of the locking handle 314 makes it easy for the user to retract or unlock it when not in operation to avoid accidental activation.

[0044] Optionally, a locking groove 315 is provided on the outer side of one of the connecting plates 301, the size of the locking groove 315 is matched with the size of the locking handle 314, and a storage box 4 is slidably connected to the inner wall of the screening device body 1.

[0045] Optionally, a sieve box 2 is slidably connected to the inner wall of the screening device body 1, and the bottom ends of two fixing plates 305 are respectively fixedly connected to the two sides of the top of the sieve box 2.

[0046] Optionally, one end of each of the two extension plates 310 is fixedly connected to the outer wall of each of the two connecting plates 301. A top plate 308 is fixedly connected between each of the two drive wheels 302 and between each of the two drive wheels 311. Two spring rods 312 are fixedly connected to the outer sides of each of the two top plates 308. In actual implementation, when the drive wheels cause the top plates 308 to flip, the spring rods 312 on the top plates 308 can provide driving feedback to the stirring assembly below. Furthermore, the extension plates 310, as intermediate connecting parts, maintain the consistency of the transmission path and ensure the stability of the force transmission direction and angle.

[0047] Optionally, the free ends of two adjacent spring rods 312 are fixedly connected to mounting plates 306, and stirring rods 307 are fixedly connected to the outer sides of the two mounting plates 306. In actual implementation, when the screen box 2 moves horizontally, the spring rods 312 are pulled by the top plate 308 to produce periodic elastic deformation, thereby causing the mounting plates 306 to move up and down. This disturbance acts on the material inside the screen box 2 through the vertical stirring rods 307, achieving local disturbance, breaking the particle aggregation state, improving the screen flow efficiency, and maintaining the particles in a flowing state.

[0048] Optionally, spring rods 317 are fixedly connected to the inner sides of both top plates 308, and cleaning brushes 316 are fixedly connected to the free ends of both spring rods 317. The inner sides of the two cleaning brushes 316 are respectively attached to the upper surface and the lower surface of the sieve box 2.

[0049] Optionally, a screening method for dog food production includes the following steps:

[0050] S1: Add the dog food raw material into the sieve box 2 through the feed inlet, start the drive structure, and make the sieve box 2 move back and forth in the horizontal direction within the screening device body 1, so that the raw material can be initially screened on the sieve box 2.

[0051] S2: During the movement of the sieve box 2, the extension plate 310 connected to it drives the rubber plate 304 to compress the spring rod 309. During the release process, the spring rod 309 hits the fixed plate 305, generating vibration and impact on the sieve box 2.

[0052] S3: The spring rod 312 at the top of the sieve box 2 changes elastically with the movement of the sieve box 2, driving the mounting plate 306 and the stirring rod 307 below it to form up and down disturbances inside the sieve box 2, which will stir the dog food raw materials.

[0053] S4: When cleaning is required, rotating the locking handle 314 drives the drive shaft 313 to rotate. The drive shaft 313 drives the first drive wheel 302 and the second drive wheel 311 to form a linkage via the drive belt 303, driving the top plate 308 and its connected cleaning brush 316 to flip.

[0054] S5: The cleaning brush 316 adheres to the upper and lower surfaces of the screen box 2 to perform brushing operations. At the same time, the impact action of the spring rod 309 removes the residue on the inner surface of the screen box 2, completing the screen cleaning process. In actual implementation, the cleaning brush 316 assembly rotates synchronously with the top plate 308 during the flipping process. The cleaning brush 316 adheres to the upper and lower surfaces of the screen box 2, and can perform brushing operations without disassembling the screen box 2. The spring rod 317 provides the contact pressure to maintain the uniformity of the force applied by the brush bristles to the surface. Combined with the movement of the screen box 2, it achieves a dynamic cleaning effect and prevents the screen holes from clogging and the accumulation of surface oil.

[0055] Working Principle: When the screening device body 1 is running, the drive structure causes the screen box 2 inside the screening device body 1 to reciprocate horizontally. The screen box 2 is equipped with a screen assembly for screening dog food particles of different sizes. After the dog food raw material enters the screen box 2 through the feed inlet, it jumps and rolls on the screen with the help of the reciprocating motion of the screen box 2, thereby effectively separating large particles and small fragments, achieving the purpose of preliminary screening. To enhance the dynamic efficiency of the screening process, the screening device body 1 is equipped with an auxiliary screening mechanism 3. This mechanism includes an extension plate 310, a fixed plate 305, a rubber plate 304, and a spring rod 309. During the movement of the screen box 2, since one end of the two extension plates 310 is fixedly connected to the connecting plate 301, and the other end is connected to the spring rod 309, the auxiliary screening mechanism 3 is used. Spring rod 309, with its bottom end perpendicular to the top of fixed plate 305, causes the rubber plate 304 to periodically contact and compress with spring rod 309 each time the sieve box 2 moves. Specifically, when the sieve box 2 moves to one side, the rubber plate 304 pushes upward, compressing spring rod 309 and accumulating elastic potential energy. When spring rod 309 is compressed to a certain extent, its bottom end contacts the top of fixed plate 305, and the release of the spring creates a rapid impact on fixed plate 305. This impact force acts on the entire structure of sieve box 2, causing it to produce a high-frequency micro-vibration effect, thereby enhancing the vibration amplitude of the screening action and effectively preventing particles from accumulating in a certain area of ​​the screen. To improve sieving efficiency and reduce sieve blockage, additional disturbance is automatically provided during the sieving process without the need for extra power, thus improving grading efficiency. Simultaneously, spring rods 312 are located on both sides of the top of the sieve box 2, with the other end of each spring rod 312 fixedly connected to a mounting plate 306. Multiple stirring rods 307 are located at the bottom of the mounting plate 306, extending vertically into the inside of the sieve box 2 and contacting the dog food pellets. When the sieve box 2 moves, the spring rods 312, due to dynamic traction, cause the mounting plate 306 to float slightly up and down, thereby causing the stirring rods 307 to locally agitate inside the sieve box 2, disrupting the flow of the material. This structure effectively breaks down the accumulation structure between pellets caused by static electricity, oily adhesion, etc., keeping the sieve surface unobstructed and improving efficiency. To ensure high overall material flowability and prevent localized clogging and screening dead zones, after the screening process is completed or after a period of operation, the screen surface and the inner wall of the screen box 2 may have a lot of residual impurities due to the oil content in the dog food, affecting the screening effect. To address this, a linkage transmission system is formed through the cooperation of transmission wheel 1 302, transmission wheel 2 311, and transmission belt 303. The user can rotate the transmission shaft 313 through the locking handle 314 on the outside of the device. The transmission shaft 313 drives the transmission wheel 1 302 to rotate, which in turn drives the transmission wheel 2 311 below through the transmission belt 303. This drives the top plate 308 installed between the transmission wheels to rotate. The rotation of the top plate 308 further drives the cleaning brush 316 connected to it to rotate.Two cleaning brushes 316 are respectively attached to the upper and lower surfaces of the sieve box 2. During rotation, the cleaning brushes 316 slide relative to the surface of the sieve box 2, removing dust, debris, oil stains, etc., thus achieving rapid cleaning and maintenance without disassembly. Simultaneously, the periodic tapping generated by the spring rod 309, in conjunction with the movement of the cleaning brushes 316, enhances the brushing effect, causing even strongly adhered oil particles to detach, further improving cleaning efficiency, preventing long-term accumulation of dirt on the sieve surface, and extending the service life of the sieve. In summary, the dog food production screening device of this invention, through its multi-stage linkage structure, elastic impact mechanism, anti-clogging stirring mechanism, and controllable cleaning, achieves multiple functions including efficient screening, automatic anti-clogging, and non-disassembly cleaning. It is particularly suitable for dog food production lines requiring continuous, high-cleanliness screening, effectively improving the level of production automation and product quality control capabilities.

[0056] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0057] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A screening device for dog food production, comprising a screening device body (1), characterized in that: The screening device body (1) is equipped with an auxiliary screening mechanism (3). The auxiliary screening mechanism (3) includes an extension plate (310), a spring rod (309), a fixing plate (305), and a rubber plate (304). The bottom ends of the two extension plates (310) are fixedly connected to the top ends of the two spring rods (309), and the top ends of the two fixing plates (305) are fixedly connected to the bottom ends of the two rubber plates (304). The auxiliary screening mechanism (3) also includes a connecting plate (301), a first transmission wheel (302), a second transmission wheel (311), and a transmission belt (303). The two connecting plates (301) are respectively fixedly connected to the inner walls of the screening device body (1). Two drive wheels (302) are rotatably connected to the top of the inner wall of the two connecting plates (301), and two drive wheels (311) are rotatably connected to the bottom of the inner wall of the two connecting plates (301). A drive belt (303) is sleeved between the drive wheels (302) and the drive wheels (311). One of the drive wheels (302) has a drive shaft (313) fixedly connected to its outer wall. The drive shaft (313) passes through one of the connecting plates (301). A locking handle (314) is slidably connected to the outer wall of the drive shaft (313). The inner wall of the screening device body (1) is slidably connected to a sieve box (2), and the bottom ends of the two fixing plates (305) are respectively fixedly connected to the two sides of the top of the sieve box (2). One end of each of the two extension plates (310) is fixedly connected to the outer wall of the two connecting plates (301). A top plate (308) is fixedly connected between the two first transmission wheels (302) and between the two second transmission wheels (311). Two spring rods (312) are fixedly connected to the outer side of each of the two top plates (308). Spring rods (317) are fixedly connected to the inner sides of the two top plates (308), and cleaning brushes (316) are fixedly connected to the free ends of the two spring rods (317). The inner sides of the two cleaning brushes (316) are respectively attached to the upper surface and the lower surface of the sieve box (2).

2. The screening device for dog food production according to claim 1, characterized in that: One of the connecting plates (301) has a locking groove (315) on its outer side. The size of the locking groove (315) matches the size of the locking handle (314). The inner wall of the screening device body (1) is slidably connected to a storage box (4).

3. The screening device for dog food production according to claim 1, characterized in that: The free ends of the two adjacent spring rods (312) are fixedly connected to mounting plates (306), and the outer sides of the two mounting plates (306) are fixedly connected to stirring rods (307).

4. A screening method for dog food production, characterized in that: The application of the screening device according to any one of claims 1-3 includes the following steps: S1: Add the dog food raw material into the sieve box (2) through the feed inlet, start the drive structure, and make the sieve box (2) move back and forth in the horizontal direction in the screening device body (1), so that the raw material can be initially screened on the sieve box (2); S2: During the movement of the sieve box (2), the extension plate (310) connected to it drives the rubber plate (304) to compress the spring rod (309). The spring rod (309) hits the fixed plate (305) during the release process, generating vibration and impact on the sieve box (2). S3: The spring rod 2 (312) at the top of the sieve box (2) undergoes elastic change as the sieve box (2) moves, driving the mounting plate (306) and the stirring rod (307) below it to form up and down disturbances inside the sieve box (2), which stirs the dog food raw materials. S4: When cleaning is required, the drive shaft (313) is rotated by rotating the locking handle (314). The drive shaft (313) drives the first drive wheel (302) and the second drive wheel (311) to form a linkage through the drive belt (303), which drives the top plate (308) and its connected cleaning brush (316) to flip. S5: The cleaning brush (316) is attached to the upper and lower surfaces of the screen box (2) to perform brushing operations. At the same time, the impact action of the spring rod (309) removes the residue on the inner surface of the screen box (2) to complete the screen cleaning process.

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