Screening device capable of preventing walnuts from being clamped

Abstract

The utility model discloses a screening device capable of preventing walnuts from being stuck, which comprises a rack, the rack is provided with a screening cylinder, the outer sides of the two ends of the screening cylinder are sleeved with track grooves, sliding wheels matched with the track grooves are installed below the track grooves, the sliding wheels are arranged in pairs, the sliding wheels are fixedly connected with the rack, and the rack is provided with a plurality of guide rails. The sliding wheels are driven by a motor, the motor is fixedly connected with the rack, a discharging port is formed in the bottom of the screening barrel, a baffle is arranged on one side of the discharging port, and an anti-blocking assembly is arranged above the baffle. The distance between the scraping plate and the screening barrel is sequentially reduced from top to bottom, when walnuts are clamped in screening holes of the screening barrel, the walnuts make contact with the scraping plate along with rotation of the screening barrel, and part of the walnuts clamped with shells are extruded to fall back to the screening barrel; and the non-falling materials continue to move, and finally fall back to the screening barrel to continue to be screened along with the reduction of the distance with the scraper blade and the increase of the extrusion force, so that low screening efficiency caused by jamming is effectively avoided, and screening continuity is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of walnut screening technology, specifically to a screening device that prevents walnuts from getting stuck. Background Technology

[0002] In the walnut processing industry, screening is a crucial step in ensuring walnut quality and increasing product added value. Because walnuts vary in shape and size, they are prone to jamming during screening, meaning walnuts become stuck in the sieve holes of the screening device. This reduces screening efficiency and may even require machine shutdown for cleaning, severely impacting the continuity and stability of the production line.

[0003] Traditional walnut sorting devices mostly use a fixed screen structure, moving the walnuts on the screen through vibration or rotation to achieve size grading. However, this design often struggles to effectively prevent jamming when dealing with walnuts of complex shapes and large size differences. Especially when a walnut gets stuck in the screen holes, it not only hinders the passage of subsequent walnuts but can also damage the screen, shortening the equipment's lifespan.

[0004] To address this issue, some improved screening devices have emerged on the market, such as those using screens with adjustable mesh sizes and adding screen cleaning mechanisms. However, these solutions are complex in structure, expensive, and have limited effectiveness, making it difficult to meet the needs of large-scale, high-efficiency production.

[0005] Therefore, developing a screening device that can prevent walnuts from getting stuck and improve screening efficiency is of great significance for improving the overall level of the walnut processing industry. Utility Model Content

[0006] This invention provides a screening device to prevent walnuts from getting stuck, thereby solving the problems existing in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0008] A screening device for preventing walnuts from getting stuck includes a frame with a screening cylinder. Track grooves are fitted on the outer sides of both ends of the screening cylinder. Sliding wheels that cooperate with the track grooves are installed below each track groove. The sliding wheels are arranged in pairs and are fixedly connected to the frame. The sliding wheels are driven by a motor, which is also fixedly connected to the frame. A discharge port is located at the bottom of the screening cylinder, and a baffle is provided on one side of the discharge port. An anti-blocking component is located above the baffle.

[0009] Preferably, the anti-clogging component includes a scraper fixedly connected to the frame, the scraper being arranged above one side along the length of the screening cylinder, and the distance between the scraper and the screening cylinder decreasing from top to bottom.

[0010] Preferably, the scraper is connected to the frame via a buffer assembly. Several sets of buffer assemblies are spaced apart. Each buffer assembly includes a fixed post. One end of the fixed post is fixedly connected to the scraper, and a sliding rod is sleeved on the outer side of the other end. A spring is fixedly connected to one end of the fixed post and the other end of the sliding rod. The end of the sliding rod away from the fixed post is fixedly connected to the frame.

[0011] Preferably, the scraper has several arc-shaped protrusions evenly distributed on the side near the screening cylinder.

[0012] Preferably, retaining rings are fixed at both ends of the screening cylinder.

[0013] Preferably, one of the retaining rings extends into a feed inlet, which is fixedly connected to the frame.

[0014] Preferably, the screen holes on the screening cylinder gradually increase in size from the feed inlet end along the length of the screening cylinder.

[0015] Preferably, the discharge port is provided with a plurality of partitions at intervals, and the plurality of partitions divide the discharge port into a plurality of discharge chambers.

[0016] This utility model has the following beneficial effects:

[0017] (1) By setting the distance between the scraper and the screening cylinder to decrease from top to bottom, when the walnut is stuck in the sieve hole of the screening cylinder, it will contact the scraper as the screening cylinder rotates, and some of the stuck walnuts will be squeezed and fall back into the screening cylinder; those that do not fall will continue to move, and as the distance from the scraper decreases and the squeezing force increases, they will eventually fall back into the screening cylinder to continue screening, which effectively avoids the low screening efficiency caused by the stuck walnuts and ensures the continuity of screening.

[0018] (2) The setting of the arc-shaped protrusion further optimizes the walnut dropping effect, which makes it easier for the squeezed walnuts to get out of the stuck state, improves the success rate of dropping stuck walnuts, and reduces the accumulation of walnuts and poor screening.

[0019] (3) The buffer component provides elastic buffer for the anti-blocking component. When cleaning stuck walnuts, it effectively buffers the impact force between the scraper and the screening cylinder, protects the equipment structure, reduces wear and failure risk, extends the service life of the equipment, and reduces maintenance and replacement costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0022] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the anti-clogging component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection structure of the buffer component of this utility model;

[0025] Figure 6 This is a schematic diagram of the internal structure of the buffer component of this utility model.

[0026] In the diagram, 1-frame, 2-screening cylinder, 3-track groove, 4-sliding wheel, 5-motor, 6-discharge port, 7-baffle, 8-scraper, 9-fixed column, 10-sliding rod, 11-spring, 12-arc protrusion, 13-retaining ring, 14-feed inlet, 15-screen hole, 16-partition plate, 17-discharge chamber. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] A screening device to prevent walnuts from getting stuck, as shown in the attached document. Figure 1-3 As shown, the device includes a frame 1, which serves as the supporting structure for the entire device. It is welded from high-strength steel to ensure the stability and reliability of the device. The frame 1 is equipped with a screening cylinder 2, on which screen holes 15 are evenly distributed. The screen holes 15 gradually increase in size along the length of the screening cylinder 2 from the feed inlet 14 end. The specific size of the screen holes 15 is designed according to the specifications of the walnuts. Track grooves 3 are fitted on the outer sides of both ends of the screening cylinder 2 to provide guidance and support for its rotation. Sliding wheels 4, which cooperate with the track grooves 3, are installed below each track groove 3. The sliding wheels 4 are arranged in pairs and are fixedly connected to the frame 1. The sliding wheels 4 are driven by a motor 5, which in turn drives the screening cylinder 2 to rotate. The motor 5 is fixedly connected to the frame 1. A discharge port 6 is provided at the bottom of the screening cylinder 2 for discharging the screened walnuts. A baffle 7 is provided on one side of the discharge port 6 to prevent walnuts from falling out during the screening process. An anti-clogging component is provided above the baffle 7.

[0029] For details, see attached. Figure 4-6As shown, the anti-clogging component includes a scraper 8 fixedly connected to the frame 1. The scraper 8 is arranged above one side along the length of the screening cylinder 2. The distance between the scraper 8 and the screening cylinder 2 decreases from top to bottom. The scraper 8 is connected to the frame 1 through a buffer component. The buffer component is arranged in three sets at intervals (the number can be determined according to the actual situation). The buffer component includes a fixed column 9. One end of the fixed column 9 is fixedly connected to the scraper 8, and a sliding rod 10 is sleeved on the outer side of the other end. One end of the fixed column 9 is sleeved on one end of the sliding rod 10 and fixedly connected to a spring 11. The other end of the spring 11 is fixedly connected to the sliding rod 10. The end of the sliding rod 10 away from the fixed column 9 is fixedly connected to the frame 1. Several arc-shaped protrusions 12 are evenly distributed on the side of the scraper 8 near the screening cylinder 2.

[0030] In this embodiment, by setting a scraper 8, and the distance between the scraper 8 and the screening cylinder 2 decreasing from top to bottom, when walnuts become stuck, as the screening cylinder 2 rotates, the walnuts stuck on the sieve holes 15 of the screening cylinder 2 rotate together with the screening cylinder 2. When they come into contact with the scraper 8, some of the stuck walnuts are squeezed off by the scraper 8 and fall back into the screening cylinder 2 for screening. The stuck walnuts that are not squeezed off continue to move with the screening cylinder 2 and continue to contact the scraper 8. As the distance between the scraper 8 and the screening cylinder 2 becomes smaller and smaller, the contact pressure between the stuck walnuts and the scraper 8 becomes larger and larger. Under the action of the pressure, the stuck walnuts fall back into the screening cylinder 2 for screening. In this process, the arc-shaped protrusion 12 makes it easier for the squeezed walnuts to fall off. The buffer component is set as an anti-blocking component to provide elastic buffering during the process of cleaning stuck walnuts, buffering the impact force between the scraper 8 and the screening cylinder 2, and protecting the scraper 8 and the screening cylinder 2.

[0031] For details, see attached. Figure 1-2 As shown, the screening cylinder 2 is fixedly provided with retaining rings 13 at both ends, one of the retaining rings 13 extends into the feed inlet 14, and the feed inlet 14 is fixedly connected to the frame 1.

[0032] In this embodiment, by fixing retaining rings 13 at both ends of the screening cylinder 2, when the walnuts enter the screening cylinder 2 from the feed inlet 14, the retaining rings 13 can prevent the walnuts from falling outwards during the falling process. When the walnuts move away from the feed inlet 14 with the screening cylinder 2, the retaining rings 13 can prevent the walnuts that have not been screened in time from falling outwards.

[0033] For details, see attached. Figure 2 As shown, the discharge port 6 is provided with two partitions 16 at intervals, and the two partitions 16 divide the discharge port 6 into three discharge chambers 17. In this embodiment, the walnuts screened from the screening cylinder 2 are respectively transported into different discharge chambers 17.

Claims

1. A screening device for preventing walnuts from getting stuck, characterized in that, The device includes a frame (1), which is equipped with a screening cylinder (2). Both ends of the screening cylinder (2) are fitted with track grooves (3). Each track groove (3) is fitted with a sliding wheel (4) that cooperates with the track groove (3). The sliding wheels (4) are arranged in pairs and are fixedly connected to the frame (1). The sliding wheels (4) are driven by a motor (5) which is fixedly connected to the frame (1). The screening cylinder (2) has a discharge port (6) at the bottom. A baffle (7) is provided on one side of the discharge port (6). An anti-blocking component is provided above the baffle (7).

2. The screening device for preventing walnut jamming according to claim 1, characterized in that, The anti-clogging component includes a scraper (8) fixedly connected to the frame (1). The scraper (8) is arranged above one side along the length direction of the screening cylinder (2), and the distance between the scraper (8) and the screening cylinder (2) decreases from top to bottom.

3. The screening device for preventing walnut jamming according to claim 2, characterized in that, The scraper (8) is connected to the frame (1) through a buffer assembly. The buffer assembly is provided in several groups at intervals. The buffer assembly includes a fixed column (9). One end of the fixed column (9) is fixedly connected to the scraper (8), and a sliding rod (10) is sleeved on the outer side of the other end. One end of the fixed column (9) is sleeved on one end of the sliding rod (10) and a spring (11) is fixedly connected to it. The other end of the spring (11) is fixedly connected to the sliding rod (10). The end of the sliding rod (10) away from the fixed column (9) is fixedly connected to the frame (1).

4. The screening device for preventing walnut jamming according to claim 3, characterized in that, The scraper (8) has several arc-shaped protrusions (12) evenly distributed on the side near the screening cylinder (2).

5. The screening device for preventing walnut jamming according to claim 1, characterized in that, The screening cylinder (2) is fixed with retaining rings (13) at both ends.

6. The screening device for preventing walnut jamming according to claim 5, characterized in that, One of the retaining rings (13) extends into a feed inlet (14), which is fixedly connected to the frame (1).

7. The screening device for preventing walnut jamming according to claim 1, characterized in that, The sieve holes (15) on the sieve cylinder (2) gradually increase in size from the feed inlet (14) along the length of the sieve cylinder (2).

8. The screening device for preventing walnut jamming according to claim 1, characterized in that, The discharge port (6) is provided with several partitions (16) at intervals, and the partitions (16) divide the discharge port (6) into several discharge chambers (17).

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