A dog food powder residue screening device
By using a roller structure and baffle cleaning brush design, the problems of screening efficiency and dust emission in dog food residue screening devices have been solved, achieving efficient and safe residue screening and dust control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEZE JIANUOJIA PET PROD CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-09
AI Technical Summary
Existing dog food residue screening devices are inadequate in terms of screening efficiency and safety, and generate a large amount of dust, which affects production efficiency and environmental hygiene.
The dog food residue screening device adopts a drum-type structure, which achieves efficient screening and dust control through continuous rotating screening combined with baffle and washing brush design.
It increases the amount and speed of single screening, reduces dust emission, improves the reliability and safety of the equipment, and enhances production efficiency and environmental hygiene.
Smart Images

Figure CN224332661U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dog food production technology, specifically a dog food residue screening device. Background Technology
[0002] Dog food residue screening equipment is a key process in pet food production. It separates the debris (residue) generated during production to ensure that the finished dog food particle size meets the standards; after removing residue, the particle surface is smooth, enhancing consumer appeal, and reducing residue also prevents oil oxidation caused by frictional heat during transportation.
[0003] Patent CN220346441U discloses a screening device for dog food production. It uses the reciprocating swing of an open arc-shaped screen frame for screening. Dog food is easy to fall off. In order to prevent dog food from falling off, the swing amplitude cannot be too large, and the amount of dog food screened at one time is also relatively limited, which affects the screening efficiency. Utility Model Content
[0004] This utility model addresses the aforementioned shortcomings of existing technologies by providing a dog food residue screening device. It adopts a drum-type structure and continuously rotates for screening, which not only greatly increases the amount of material screened per batch but also improves the screening speed, making it more reliable and safer to use. Furthermore, the device features loading and unloading from both ends, making operation more convenient.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A dog food residue screening device includes a base, a screening cylinder connected to the upper end of the base, and screen holes evenly distributed on the side wall of the screening cylinder. One end of the screening cylinder is a feed inlet. The upper end of the base is equipped with a roller and a first motor for driving the roller to rotate. The feed inlet is located at the upper end of the roller. The other end of the screening cylinder is a discharge outlet, and a discharge cylinder is connected to the discharge outlet. The discharge cylinder is connected to the base via a rotating shaft. A second motor connected to the rotating shaft is provided on the base. A residue box is provided below the screening cylinder, and a dog food box is provided below the discharge cylinder.
[0007] Preferably, the screening cylinder is provided with baffles on both sides that are connected to the base.
[0008] Preferably, the inner side of the baffle is provided with a cleaning brush that cooperates with the side wall of the screening cylinder, and the length of the cleaning brush is not less than the length of the screening cylinder.
[0009] Preferably, one end of the feed inlet is connected to a retaining ring with an inner diameter smaller than that of the discharge cylinder, and a feed cylinder is connected to the retaining ring, the feed cylinder cooperating with the idler roller.
[0010] Preferably, the outer side of the feed cylinder is fitted with a replaceable wear-resistant ring.
[0011] Preferably, the diameter of the discharge cylinder is smaller than that of the screening cylinder, and the discharge cylinder and the screening cylinder are connected by a material blocking ring, the inner diameter of which gradually decreases from the screening cylinder to the discharge cylinder.
[0012] Preferably, a support ring is fitted on the outer side of the unloading cylinder, and the unloading cylinder and the support ring are rotatably fitted together. The unloading cylinder is connected to the second motor through a rotating shaft.
[0013] Preferably, the maximum rotation angle of the screening cylinder during unloading is 45°-60°.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This utility model adopts a drum-type structure, which greatly increases the amount of material screened per batch and the screening speed through continuous rotation screening, making it more reliable and safer to use; moreover, it adopts loading and unloading at both ends, making the operation more convenient.
[0016] 2. This utility model adopts a combination of cylindrical structure and baffle, which greatly reduces the amount of dust emission, and under the guidance of the baffle, the powder and slag can be collected in the powder and slag box.
[0017] 3. When the screen cylinder of this utility model rotates continuously, the cleaning brush on the inner side of the baffle scrapes the screen holes in real time, reducing the clogging rate by 80% and ensuring high flow screening. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0020] Figure 3 This is the left view of the present invention;
[0021] Figure 4 This is a schematic diagram of the structure of the screening cylinder;
[0022] Figure 5 This is a schematic diagram of the structure during unloading;
[0023] In the diagram: 1-base; 101-first motor; 102-second motor; 103-support roller; 2-powder and slag box; 3-baffle; 4-dog food box; 5-screening cylinder; 501-retaining ring; 502-feeding cylinder; 503-wear-resistant ring; 504-material blocking ring; 505-support ring; 506-rotating shaft; 507-discharge cylinder; 6-cleaning brush. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] like Figure 1 , Figure 2 As shown, a dog food residue screening device includes a base 1, with a screening cylinder 5 connected to the upper end of the base 1. The screening cylinder 5 has screen holes evenly distributed on its side wall. One end of the screening cylinder 5 is a feed inlet. The upper end of the base 1 is provided with a roller 103 and a first motor 101 that drives the roller 103 to rotate. The feed inlet is located at the upper end of the roller 103. The other end of the screening cylinder 5 is a discharge outlet. A discharge cylinder is connected to the discharge outlet. The discharge cylinder is connected to the base 1 through a rotating shaft. The base 1 is provided with a second motor 102 connected to the rotating shaft. A residue box 2 is provided below the screening cylinder 5, and a dog food box 4 is provided below the discharge cylinder.
[0026] The screening cylinder 5 is equipped with baffles 3 on both sides that are connected to the base 1 to prevent the screen from falling onto the outside of the powder and slag box 2.
[0027] like Figure 3 As shown, the inner side of the baffle 3 is provided with a cleaning brush 6 that cooperates with the side wall of the screening cylinder 5. The length of the cleaning brush 6 is not less than the length of the screening cylinder 5, and the brush bristles can pass through the screen holes.
[0028] like Figure 4 As shown, one end of the feed inlet is connected to a retaining ring 501 with an inner diameter smaller than that of the discharge cylinder 507 to prevent dog food from falling during screening. The retaining ring 501 is connected to a feed cylinder 502, which cooperates with the idler roller 103.
[0029] The feed cylinder 502 is fitted with a replaceable wear ring 503 on the outside. The wear ring 503 is made of polyurethane and has a lifespan of about 6 months.
[0030] The diameter of the discharge cylinder 507 is smaller than that of the screening cylinder 5. The discharge cylinder 507 and the screening cylinder 5 are connected by a material blocking ring 504. The inner diameter of the material blocking ring 504 gradually decreases from the screening cylinder 5 to the discharge cylinder 507.
[0031] The outer side of the unloading cylinder 507 is fitted with a support ring 505 through a bearing. The unloading cylinder 507 and the support ring 505 are rotatably engaged. The unloading cylinder 507 is connected to the second motor 102 through a rotating shaft 506.
[0032] like Figure 5As shown, the maximum rotation angle of the screening cylinder 5 during unloading is 45°-60°. If it is less than 45°, the dog food will not flow smoothly, and if it is greater than 60°, the particle impact damage rate will increase. Therefore, 50° and 55° are preferred.
[0033] In use, the dog food to be screened enters the screening cylinder 5 through the feeding cylinder 502. The first motor 101 drives the screening cylinder 5 to rotate through the roller 103 to screen the powder and residue in the dog food. The powder and residue fall into the powder and residue box 2. After screening is completed, the first motor 101 stops and the second motor 102 starts, driving the screening cylinder 5 to rotate 45°. The screened dog food enters the dog food box 4 through the unloading cylinder 507.
[0034] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A dog food residue screening device, comprising a base, characterized in that: The upper end of the base is connected to a screening cylinder, and the side wall of the screening cylinder is evenly provided with screen holes. One end of the screening cylinder is a feed inlet. The upper end of the base is provided with a support roller and a first motor that drives the support roller to rotate. The feed inlet is located at the upper end of the support roller. The other end of the screening cylinder is a discharge outlet, and a discharge cylinder is connected to the discharge outlet. The discharge cylinder is connected to the base through a rotating shaft. The base is provided with a second motor connected to the rotating shaft. A powder and slag box is provided below the screening cylinder, and a dog food box is provided below the discharge cylinder.
2. The dog food residue screening device as described in claim 1, characterized in that: The screening cylinder is equipped with baffles on both sides that are connected to the base.
3. The dog food residue screening device as described in claim 2, characterized in that: The inner side of the baffle is provided with a cleaning brush that cooperates with the side wall of the screening cylinder, and the length of the cleaning brush is not less than the length of the screening cylinder.
4. The dog food residue screening device as described in claim 1, characterized in that: One end of the feed inlet is connected to a retaining ring with an inner diameter smaller than that of the discharge cylinder. The retaining ring is connected to a feed cylinder, which is in conjunction with the idler roller.
5. The dog food residue screening device as described in claim 4, characterized in that: The feed cylinder is fitted with a replaceable wear-resistant ring on its outer side.
6. The dog food residue screening device as described in claim 1, characterized in that: The diameter of the discharge cylinder is smaller than that of the screening cylinder. The discharge cylinder and the screening cylinder are connected by a material blocking ring, and the inner diameter of the material blocking ring gradually decreases from the screening cylinder to the discharge cylinder.
7. The dog food residue screening device as described in claim 6, characterized in that: The unloading cylinder is fitted with a support ring on its outer side, and the unloading cylinder and the support ring are rotatably connected. The unloading cylinder is connected to the second motor through a rotating shaft.
8. The dog food residue screening device as described in claim 1, characterized in that: The maximum rotation angle of the screening cylinder during unloading is 45°-60°.