Screening device for dog food production and using method thereof

Abstract

The invention relates to a screening device for dog food production and a using method thereof. The screening device comprises a screening device body, and an auxiliary screening mechanism is arranged in the screening device body; according to the invention, in the reciprocating motion process of the arranged auxiliary sieving mechanism and the sieve box, periodic knocking action is realized through cooperative cooperation of a fixed plate, a rubber plate and a spring rod I, an unpowered vibration disturbance mechanism is constructed, vibration energy can be continuously provided for the sieve surface, and the particle jumping frequency is obviously improved; compared with a traditional static screening device, the device has the advantages that the screening precision is improved, the screening hole blocking probability is remarkably reduced, the device is suitable for the treatment working condition of high-adhesiveness and high-oil dog food particles, meanwhile, the structure does not need to be externally connected with a motor or an additional transmission mechanism, and energy consumption and mechanical abrasion are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dog food production, and in particular to a screening device for dog food production and a use method thereof. Background Art

[0002] Dog food, a key component of pet food, is typically mass-produced in pellet form. During the dog food production process, after mixing, extrusion, and drying, the finished pellets need to be screened to remove unqualified debris and oversized or undersized particles, ensuring uniform particle size and product appearance. This process significantly impacts dog food quality control, packaging efficiency, and market sales.

[0003] In the actual implementation process, there are still some problems:

[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 particles with high adhesion or high oil content, the particles are easily accumulated on the screen, resulting in local blockage of the screen surface, reduced screening efficiency, and difficulty in ensuring particle classification accuracy. At the same time, because the vibration force depends on the motor or additional mechanism, the system structure is complex and energy consumption is high. Frequent operation can easily lead to fatigue and wear of mechanical components, resulting in a large maintenance workload, affecting the stable operation and service life of the equipment, and is not suitable for long-term continuous operation.

[0005] 2. During the long-term use of existing screening equipment, the screen surface and the inner wall of the screen box are easily contaminated by residual grease, debris and other sticky components in the material. This phenomenon is especially serious when screening highly oily and dusty dog food particles. Traditional cleaning usually relies on manual disassembly of the screen box for brushing. Not only is the operation cumbersome, but frequent disassembly and assembly can easily damage the screen surface, affecting the service life of the equipment. In addition, static adsorption and particle accumulation dead corners are easily formed in the screen box. The lack of an effective disturbance mechanism to break up the pile of materials causes screening dead corners and blockages, increasing the number of shutdowns and manual maintenance frequency, making 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] (1) Technical issues to be resolved

[0007] In order to solve the above problems of the prior art, the present invention provides a screening device for dog food production and a method of using the same, which solves the problems of insufficient vibration, easy screen clogging, high energy consumption, frequent maintenance and cleaning difficulties, low efficiency, and frequent manual intervention.

[0008] (2) Technical solution

[0009] In order to achieve the above object, the main technical solutions adopted by the present invention are:

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

[0011] The auxiliary screening mechanism includes an extension plate, a spring rod 1, a fixed plate and a rubber plate. The bottom ends of the two extension plates are respectively fixedly connected to the top ends of the two spring rods 1, and the top ends of the two fixed plates are respectively fixedly connected to the bottom ends of the two rubber plates.

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

[0013] The two transmission wheels 1 are rotatably connected to the top of the inner walls of the two connecting plates, and the two transmission wheels 2 are rotatably connected to the bottom of the inner walls of the two connecting plates. A transmission belt is provided between the transmission wheels 1 and 2.

[0014] The outer wall of one of the transmission wheels is fixedly connected with a transmission shaft, and the transmission shaft passes through one of the connecting plates. The outer wall of the transmission shaft is slidably connected with a locking handle.

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

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

[0017] One end of the two extension plates is fixedly connected to the outer walls of the two connecting plates respectively, a top plate is fixedly connected between the two transmission wheels 1 and between the two transmission wheels 2, and two spring rods 2 are fixedly connected to the outer sides of the two top plates.

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

[0019] The inner sides of the two top plates are fixedly connected with spring rods three, the free ends of the two spring rods three are fixedly connected with cleaning brushes, and 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 comprises the following steps:

[0021] S1: Add the dog food raw materials into the sieve box through the feed inlet, start the driving mechanism, and make the sieve box move back and forth horizontally in the screening device body, so that the raw materials are preliminarily screened on the sieve box;

[0022] S2: During the movement of the screen box, the extension plate connected to it drives the rubber plate to compress the spring rod 1. The spring rod 1 hits the fixed plate during the release process, generating a vibration impact on the screen box;

[0023] S3: The spring rod 2 at the top of the sieve box undergoes elastic changes as the sieve box moves, driving the mounting plate and the stirring rod below it to create an up and down disturbance inside the sieve box, stirring the dog food raw materials;

[0024] S4: When cleaning is required, the transmission shaft is rotated by rotating the locking handle, and the transmission shaft drives the transmission wheel 1 and the transmission wheel 2 to form a linkage through the transmission belt, driving the top plate and the cleaning brush connected thereto to flip over;

[0025] S5: The cleaning brush is attached to the upper and lower surfaces of the screen box to perform a brushing operation, and at the same time, the impact action of the spring rod 1 is used to remove the residue on the inner surface of the screen box to complete the screen cleaning process.

[0026] (3) Beneficial effects

[0027] The beneficial effects of the present invention are:

[0028] 1. In the present invention, by providing an auxiliary screening mechanism, the screen box realizes periodic knocking action during the reciprocating motion through the coordinated cooperation of the fixed plate, the rubber plate and the spring rod, thereby constructing a non-powered disturbance mechanism, which can continuously provide vibration energy to the screen surface, significantly improve the particle jumping frequency, and thus accelerate the separation efficiency of the particulate material. Compared with the traditional static screening device, the device of the present invention not only improves the screening accuracy, but also significantly reduces the probability of sieve hole clogging, and is suitable for processing dog food particles with high adhesion and high oiliness. At the same time, the structure does not require an external motor or additional transmission mechanism, reduces energy consumption and mechanical wear, and improves the stability and service life of the equipment operation. It is suitable for promotion and application in modern dog food production lines with high continuity and strict dust control.

[0029] 2. In the present invention, through the auxiliary screening mechanism, the stirring rod is driven by the dynamic floating of the spring rod 2 and the mounting plate, which can slightly disturb the dog food particles during the screening process, destroy the particle adhesion caused by grease or static electricity, and effectively prevent the formation of material accumulation dead corners inside the screen box, ensuring the smooth flow of the screen surface. The cleaning structure adopts a transmission wheel, a transmission shaft and a locking handle control method. The user only needs to rotate the handle to realize the synchronous flipping of the top plate and the cleaning brush through the transmission system, so that the brush head fits the inner and outer surfaces of the screen 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, ensuring the long-term and efficient operation of the screen, 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 sanitary conditions of medium and large dog food production enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 2 This is a schematic structural 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 structural diagram of the bottom portion of the screening device body of the present invention;

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

[0035] Figure 6 Schematic diagram of the screening method of the present invention.

[0036] [Description of Reference Numerals]

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

[0038] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0039] Please refer to Figures 1 to 6 As shown, a screening device for dog food production and a method of using the same of the present invention include a screening device body 1, wherein 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 respectively fixedly connected to the top ends of the two spring rods 309, and the top ends of the two fixed plates 305 are respectively fixedly connected to the bottom ends of the two rubber plates 304.

[0041] Optionally, the auxiliary screening mechanism 3 further 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 fixedly connected to the inner walls of the screening device body 1. In actual implementation, the connecting plates 301 serve as mounting bases, providing structural support and motion guidance for the transmission assembly. By securing them to the inner walls of the screening device body 1, they ensure a stable and symmetrical arrangement of the first and second transmission wheels 302, 311, and the transmission belt 303 assembly, ensuring balanced force during subsequent linked transmission and avoiding structural interference or transmission blockage caused by unbalanced loading or skewed installation.

[0042] Optionally, the two transmission wheels 1 302 are respectively rotatably connected to the top of the inner walls of the two connecting plates 301, and the two transmission wheels 2 311 are respectively rotatably connected to the bottom of the inner walls of the two connecting plates 301, and a transmission belt 303 is provided between the transmission wheels 1 302 and 311.

[0043] Optionally, a transmission shaft 313 is fixedly connected to the outer wall of one of the transmission wheels 302. This shaft 313 extends through one of the connecting plates 301, and a locking handle 314 is slidably connected to the outer wall of the transmission shaft 313. In actual implementation, the transmission shaft 313 serves as an external force input shaft. The user can rotate it via the locking handle 314 to achieve internal and external force conversion. Passing through the connecting plate 301, the transmission shaft 313 directly connects the power input to the transmission assembly. The sliding connection structure of the locking handle 314 facilitates the user to fold or unlock it when not in use, preventing accidental activation.

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

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

[0046] Optionally, one end of each extension plate 310 is fixedly connected to the outer wall of each connecting plate 301. A top plate 308 is fixedly connected between the two transmission wheels 1 302 and between the two transmission wheels 2 311. Two spring rods 2 312 are fixedly connected to the outer sides of each top plate 308. In actual implementation, when the transmission wheels drive the top plate 308 to flip, the spring rods 2 312 on the top plate 308 can provide drive feedback to the stirring assembly below. Furthermore, the extension plate 310 serves as an intermediate connector to maintain the consistency of the transmission path, ensuring the stable direction and angle of force transmission.

[0047] Optionally, the free ends of two adjacent spring rods 312 are fixedly connected to the mounting plate 306, and the outer sides of the two mounting plates 306 are fixedly connected to the stirring rods 307. 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 driving the mounting plate 306 to perform an up and down disturbance. This disturbance acts on the material inside the screen box 2 through the vertical stirring rods 307, achieving local disturbance, destroying the particle aggregation state, improving the screen mesh circulation efficiency, and maintaining the particles in a flowing state.

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

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

[0050] S1: Add the dog food raw materials into the sieve box 2 through the feed inlet, start the driving mechanism, and make the sieve box 2 move back and forth horizontally in the screening device body 1, so that the raw materials are preliminarily screened on the sieve box 2;

[0051] S2: During the movement of the sieve box 2, the extension plate 310 connected thereto drives the rubber plate 304 to compress the spring rod 1 309. The spring rod 1 309 hits the fixed plate 305 during the release process, generating a vibration impact on the sieve box 2;

[0052] S3: The spring rod 2 312 at the top of the sieve box 2 changes elasticity as the sieve box 2 moves, driving the mounting plate 306 and the stirring rod 307 below it to form an up and down disturbance inside the sieve box 2, stirring the dog food raw materials;

[0053] S4: When cleaning is required, the locking handle 314 is rotated to drive the transmission shaft 313 to rotate. The transmission shaft 313 drives the transmission wheel 1 302 and the transmission wheel 2 311 to form a linkage via the transmission belt 303, driving the top plate 308 and the cleaning brush 316 connected thereto to flip over;

[0054] S5: The cleaning brush 316 is attached to the upper and lower surfaces of the sieve box 2 to perform a brushing operation, and at the same time, cooperates with the impact action of the spring rod 1 309 to remove the residue on the inner surface of the sieve box 2 to complete the cleaning process of the screen. In the actual implementation process, the cleaning brush 316 assembly rotates synchronously with the top plate 308 during the flipping process. The cleaning brush 316 is attached to the upper and lower surfaces of the sieve box 2 and can perform a brushing operation without disassembling the sieve box 2. The spring rod 317 provides a fitting pressure to maintain the uniformity of the force applied by the bristles to the surface, and cooperates with the movement of the sieve box 2 to achieve a dynamic cleaning effect to prevent the sieve holes from being blocked and oil accumulation on the surface.

[0055] Working principle: When the screening device body 1 is running, the driving structure makes the screen box 2 inside the screening device body 1 move back and forth in the horizontal direction. A screen assembly is provided inside the screen box 2 for realizing screening of dog food particles of different particle sizes. After the dog food raw materials enter the screen box 2 through the feed port, the reciprocating motion of the screen box 2 causes it to jump and roll on the screen, thereby effectively separating large particles and small fragments, thereby achieving the purpose of preliminary screening. In order to enhance the dynamic efficiency of the screening process, the screening device body 1 is provided with an auxiliary screening mechanism 3, which 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, 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 spring rod 309 and the bottom end of the spring rod 309 are vertically directed toward the top of the fixed plate 305. Therefore, each time the screen box 2 moves, the movement of the fixed plate 305 will drive the rubber plate 304 to periodically contact and squeeze with the spring rod 309. Specifically, when the screen box 2 moves to one side, the rubber plate 304 will push up and compress the spring rod 309, so that it accumulates elastic potential energy. After the spring rod 309 is compressed to a certain extent, since its bottom end contacts the top of the fixed plate 305, the spring releases and forms a rapid knock on the fixed plate 305. The knocking force acts on the entire screen box 2 structure, causing the screen box 2 to produce a high-frequency micro-vibration effect, thereby enhancing the vibration amplitude of the screening action, effectively preventing particles from accumulating in a certain area of the screen. The second spring rod 312 is fixedly connected to the mounting plate 306 at the other end, and a plurality of stirring rods 307 are provided at the lower part of the mounting plate 306. The stirring rods 307 extend vertically into the inner side of the sieve box 2 and come into contact with the dog food particles. When the sieve box 2 moves, the second spring rod 312 will drive the mounting plate 306 to float up and down slightly due to dynamic traction, so that the stirring rods 307 are locally stirred inside the sieve box 2, disturbing the flow state of the material. This structure can effectively destroy the accumulation structure between the particles due to static electricity, oily adhesion, etc., keep the screen surface unobstructed, and improve the grading efficiency. The overall fluidity of the material is high, which prevents local blockage and blind spots in screening. After the screening process is completed or after running for a period of time, the surface of the screen and the inner wall of the screen box 2 may be adhered with a lot of residual impurities due to the grease components in the dog food, which affects the screening effect. To this end, a linkage transmission system is formed by the cooperation between the transmission wheel 1 302, the transmission wheel 2 311 and the transmission belt 303. The user can rotate the transmission shaft 313 through the locking handle 314 set on the outside of the device. The transmission shaft 313 drives the transmission wheel 1 302 to rotate, and synchronously drives the transmission wheel 2 311 below through the transmission belt 303, thereby driving the top plate 308 installed between the transmission wheels to flip. The flipping of the top plate 308 further drives the cleaning brush 316 connected thereto to flip.The two cleaning brushes 316 are respectively attached to the upper and lower surfaces of the sieve box 2. During the rotation process, the cleaning brushes 316 slide relative to the surface of the sieve box 2, and can brush off dust, debris, oil stains, etc. adhering thereto, thereby achieving rapid cleaning and maintenance without disassembly. At the same time, with the cooperation of the movement of the cleaning brushes 316, the periodic knocking generated by the spring rod 1 309 can also enhance the brushing effect, causing the oil particles with strong adhesion to fall off, further improving the cleaning efficiency, avoiding long-term fouling on the screen surface, and extending the service life of the screen. Overall, the screening device for dog food production of the present invention realizes the multiple functions of efficient screening, automatic anti-blocking and non-disassembly cleaning through the multi-stage linkage structure, elastic impact mechanism, anti-blocking stirring mechanism and controllable cleaning. It is particularly suitable for dog food production lines that require continuous and high-cleanliness screening, effectively improving the level of production automation and product quality control capabilities.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0057] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in 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: An auxiliary screening mechanism (3) is provided inside the screening device body (1); The auxiliary screening mechanism (3) comprises an extension plate (310), a spring rod (309), a fixed plate (305) and a rubber plate (304), wherein the bottom ends of the two extension plates (310) are respectively fixedly connected to the top ends of the two spring rods (309), and the top ends of the two fixed plates (305) are respectively fixedly connected to the bottom ends of the two rubber plates (304).

2. A screening device for dog food production according to claim 1, characterized in that: The auxiliary screening mechanism (3) further comprises a connecting plate (301), a first transmission wheel (302), a second transmission wheel (311) and a transmission belt (303), wherein the two connecting plates (301) are respectively fixedly connected to both sides of the inner wall of the screening device body (1).

3. A screening device for dog food production according to claim 2, characterized in that: The two transmission wheels (302) are respectively rotatably connected to the top of the inner wall of the two connecting plates (301), and the two transmission wheels (311) are respectively rotatably connected to the bottom of the inner wall of the two connecting plates (301). A transmission belt (303) is provided between the transmission wheel (302) and the transmission wheel (311).

4. A screening device for dog food production according to claim 2, characterized in that: The outer wall of one of the transmission wheels (302) is fixedly connected to a transmission shaft (313), the transmission shaft (313) passes through one of the connecting plates (301), and the outer wall of the transmission shaft (313) is slidably connected to a locking handle (314).

5. The dog food production screening device according to claim 2, characterized in that: A locking groove (315) is provided on the outer side of one of the connecting plates (301), the size of the locking groove (315) matches 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).

6. The dog food production screening device according to claim 2, characterized in that: The inner wall of the screening device body (1) is slidably connected to a screening box (2), and the bottom ends of the two fixing plates (305) are respectively fixedly connected to the two sides of the top end of the screening box (2).

7. The screening device for dog food production according to claim 2, characterized in that: One end of the two extension plates (310) is fixedly connected to the outer walls of the two connecting plates (301), a top plate (308) is fixedly connected between the two transmission wheels (302) and between the two transmission wheels (311), and two spring rods (312) are fixedly connected to the outer sides of the two top plates (308).

8. The screening device for dog food production according to claim 7, characterized in that: The free ends of the two adjacent spring rods (312) are fixedly connected to the mounting plates (306), and the outer sides of the two mounting plates (306) are fixedly connected to the stirring rods (307).

9. The screening device for dog food production according to claim 7, characterized in that: The inner sides of the two top plates (308) are fixedly connected with spring rod three (317), the free ends of the two spring rod three (317) are fixedly connected with cleaning brushes (316), and the inner sides of the two cleaning brushes (316) are respectively attached to the upper surface of the sieve box (2) and the lower surface of the sieve box (2).

10. A screening method for dog food production, characterized in that: The screening device according to any one of claims 1 to 7 comprises the following steps: S1: Add the dog food raw materials into the sieve box (2) through the feed inlet, start the driving 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 materials are preliminarily screened on the sieve box (2); S2: During the movement of the sieve box (2), the extension plate (310) connected thereto drives the rubber plate (304) to compress the spring rod 1 (309), and the spring rod 1 (309) hits the fixed plate (305) during the release process, generating a vibration impact on the sieve box (2); S3: The spring rod 2 (312) at the top of the sieve box (2) undergoes elastic changes as the sieve box (2) moves, driving the mounting plate (306) and the stirring rod (307) below it to form an up and down disturbance inside the sieve box (2), thereby stirring the dog food raw materials; S4: When cleaning is required, the locking handle (314) is rotated to drive the transmission shaft (313) to rotate, and the transmission shaft (313) drives the transmission wheel 1 (302) and the transmission wheel 2 (311) to form a linkage via the transmission belt (303), driving the top plate (308) and the cleaning brush (316) connected thereto to flip over; S5: The cleaning brush (316) is attached to the upper and lower surfaces of the screen box (2) to perform a brushing operation, and at the same time, the impact action of the spring rod (309) is coordinated to remove the residue on the inner surface of the screen box (2), completing the screen cleaning process.

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