Powder material screening device

Abstract

The utility model discloses a powder material screening device which comprises a machine frame, a box body is connected to the machine frame in a rotating mode, and a telescopic mechanism for driving the box body to rotate is further arranged between the machine frame and the box body. A semi-cylindrical screen is transversely arranged in the box body, an interlayer cavity is formed between the screen and the inner bottom surface of the box body, a discharge port and a slag outlet are formed in the two sides of the lower end of the box body, the discharge port is communicated with the interlayer cavity, and the slag outlet is communicated with a cavity above the screen; the two ends of the box body are rotationally connected with rotating shafts which are coaxial with the semi-cylindrical screen cloth, a scraping plate matched with the end face of the inner side of the screen cloth is connected between the two rotating shafts, and the box body is provided with a swing motor mechanism used for driving one rotating shaft. The powder screening device is provided with the closed screening material storage cavity, when screening is conducted in the cavity, the powder material screening speed is increased through the scraper which is matched with the screen and swings in a reciprocating mode, and the problem of screening dust raising is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of screening, in particular to a powder material screening device. Background Art

[0002] At present, a disk vibrating screen or a linear vibrating screen is used for screening powder materials. Since the storage space of such vibrating screens is small, manual feeding and slag cleaning are required frequently, resulting in high labor intensity and low work efficiency.

[0003] In addition, the structure of such vibrating screens is open, and their working principle is to screen materials by vibration. During the screening of powder materials, there is a large amount of dust, which affects the working environment. Therefore, the inventor wants to design a screening device specifically for powder materials. Summary of the Invention

[0004] The purpose of the utility model is to provide a powder material screening device aiming at the defects existing in the prior art. The device has a closed screening and storage cavity. When screening in the cavity, a reciprocating swing scraper cooperating with a screen is used to accelerate the screening speed of powder materials, effectively avoiding the problem of screening dust. In addition, the screened powder and slag are discharged by controlling different inclination angles of the screening cavity, which is convenient to use and has high operation efficiency.

[0005] The technical solution of the utility model is as follows: a powder material screening device, including a frame, a box body is rotatably connected to the frame, a feeding port is arranged at the top of the box body, and a telescopic mechanism for driving the box body to rotate is further arranged between the frame and the box body;

[0006] A horizontally arranged semi-cylindrical screen is arranged in the box body, and an interlayer cavity is formed between the screen and the inner bottom surface of the box body. Discharge ports and slag discharge ports are arranged on both sides of the lower end of the box body. The discharge port is communicated with the interlayer cavity, and the slag discharge port is communicated with the cavity above the screen;

[0007] Rotating shafts coaxial with the semi-cylindrical screen are rotatably connected to both ends of the box body, and a scraper cooperating with the inner end surface of the screen is connected between the two rotating shafts. A swing motor mechanism for driving one of the rotating shafts is arranged on the box body.

[0008] The swing motor mechanism includes a driving motor, a long swing arm, a short swing arm and a connecting rod. The motor is fixed on the box body through a bracket;

[0009] One end of the long swing arm is fixedly connected to the adjacent rotating shaft, the other end of the long swing arm is rotatably connected to one end of the connecting rod, the other end of the connecting rod is rotatably connected to one end of the short swing arm, and the other end of the short swing arm is fixedly connected to the output shaft of the driving motor.

[0010] The telescopic mechanism is a hydraulic cylinder, a pneumatic cylinder or an electric telescopic rod.

[0011] The feed inlet has a funnel-shaped structure.

[0012] The longitudinal section of the box body has a U-shaped structure.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model has a closed screening and storage cavity with a large storage capacity. When screening in the cavity, a reciprocating swing scraper cooperating with a sieve mesh is adopted to accelerate the screening speed of powder materials, and at the same time, the problem of screening dust is effectively avoided;

[0015] In addition, the screened powder and slag are discharged by controlling different inclination angles of the screening cavity, which is convenient to use and has high operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the utility model;

[0017] Figure 2 is a schematic cross-sectional structure of the box body Figure 1 ;

[0018] Figure 3 is a schematic cross-sectional structure of the box body Figure 2 ;

[0019] In the figure: 1, feed inlet; 2, box body; 3, long swing arm; 4, connecting rod; 5, short swing arm; 6, driving motor; 7, swing motor mechanism; 8, support; 9, rotating shaft; 10, discharge port; 11, telescopic mechanism; 12, slag outlet; 13, support; 14, sandwich cavity; 15, scraper; 16, sieve mesh; 17, rib plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes the utility model in conjunction with the drawings and embodiments. Embodiment 1

[0021] As Figures 1 to 3 , a powder material screening device includes a frame 13, a box body 2 is rotatably connected to the frame 13, the longitudinal section of the box body 2 has a U-shaped structure, and a feed inlet 1 with a funnel-shaped structure is provided at the top of the box body 2.

[0022] A telescopic mechanism 11 for driving the box body 2 to rotate is further provided between the frame 13 and the box body 2. Both ends of the telescopic mechanism 11 are respectively hinged to the frame 13 and the box body 2, and the telescopic mechanism 11 can be selected from a hydraulic cylinder, a pneumatic cylinder or an electric telescopic rod.

[0023] A semi-cylindrical sieve mesh 16 is transversely arranged in the box body 2. Two rib plates 17 are arranged in the box body 2 to connect the two ends of the top of the sieve mesh 16 to the box body 2, and a sandwich cavity 14 is formed between the sieve mesh 16 and the inner bottom surface of the box body 2.

[0024] On both sides of the lower end of the box body 2, there are a discharge port 10 and a slag discharge port 12. The discharge port 10 communicates with the interlayer cavity 14, and the slag discharge port 12 communicates with the cavity above the screen 16.

[0025] Both ends of the box body 2 are rotatably connected with rotating shafts 9 arranged coaxially with the semi-cylindrical screen 16, and a scraper 15 that cooperates with the inner end face of the screen 16 is connected between the two rotating shafts 9. The lower end face of the scraper 15 just touches the screen 16 or has a little gap.

[0026] On the box body 2, there is a swing motor mechanism 7 for driving one of the rotating shafts 9, and the scraper 15 is driven by the swing motor mechanism 7 to reciprocally swing along the inner end face of the screen 16.

[0027] During use, first tilt the box body 2 by controlling the telescopic mechanism 11, so that the side of the discharge port 10 is at a lower position, and feed materials into the enclosed screening and storage cavity of the box body 2 from the feed port 1;

[0028] During screening in the cavity, the reciprocally swinging scraper 15 cooperating with the screen 16 is used to accelerate the screening speed of the powder materials and prevent the powder materials from accumulating above the screen 16;

[0029] The screened powder materials slide down along the inclined box body 2 and are discharged from the discharge port 10;

[0030] After screening is completed, tilt the box body 2 in the reverse direction by controlling the telescopic mechanism 11, so that the side of the slag discharge port 12 is at a lower position. The slag screened above the screen 16 slides down along the inclined screen 16 and is discharged from the slag discharge port 12.

[0031] The utility model has an enclosed screening and storage cavity with a large storage capacity. During screening in the cavity, the reciprocally swinging scraper 15 cooperating with the screen 16 is used to accelerate the screening speed of the powder materials, and at the same time, the problem of screening dust is effectively avoided;

[0032] In addition, the screened powder materials and slag are discharged by controlling different tilting angles of the screening cavity, which is convenient to use and has high operation efficiency. Embodiment 2

[0033] This embodiment optimizes the swing motor mechanism 7 on the basis of the above embodiment. Specifically:

[0034] As Figure 1 , the swing motor mechanism 7 includes a driving motor 6, a long swing arm 3, a short swing arm 5 and a connecting rod 4. The motor is fixed on the box body 2 through a bracket 8;

[0035] One end of the long swing arm 3 is fixedly connected to the adjacent rotating shaft 9, the other end of the long swing arm 3 is rotatably connected to one end of the connecting rod 4, the other end of the connecting rod 4 is rotatably connected to one end of the short swing arm 5, and the other end of the short swing arm 5 is fixedly connected to the output shaft of the driving motor 6.

[0036] The driving motor 6 drives the end swing arm to rotate, and then the short swing arm 5 drives the long swing arm 3 to swing reciprocally in an arc through the connecting rod 4, thereby driving the scraper 15 to swing reciprocally, accelerating the screening speed of the material above the screen 16, and preventing the screened material from accumulating above the screen 16.

[0037] The present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present utility model, and the changed content still falls within the protection scope of the present utility model.

Claims

1. A powder material screening device, comprising a frame, characterized in that: A box body is rotatably connected to the frame. A feed inlet is provided at the top of the box body. A telescopic mechanism for driving the box body to rotate is further provided between the frame and the box body. A semi-cylindrical screen is horizontally arranged inside the box body, and a sandwich cavity is formed between the screen and the inner bottom surface of the box body. Discharge ports and slag discharge ports are provided on both sides of the lower end of the box body. The discharge ports are communicated with the sandwich cavity, and the slag discharge ports are communicated with the cavity above the screen. Rotating shafts arranged coaxially with the semi-cylindrical screen are rotatably connected to both ends of the box body, and a scraper cooperating with the inner end surface of the screen is connected between the two rotating shafts. A swing motor mechanism for driving one of the rotating shafts is provided on the box body.

2. The powder material screening device according to claim 1, wherein: The swing motor mechanism includes a driving motor, a long swing arm, a short swing arm and a connecting rod. The motor is fixed to the box body through a bracket. One end of the long swing arm is fixedly connected to the adjacent rotating shaft. The other end of the long swing arm is rotatably connected to one end of the connecting rod. The other end of the connecting rod is rotatably connected to one end of the short swing arm. The other end of the short swing arm is fixedly connected to the output shaft of the driving motor.

3. A powder material screening device according to claim 1, characterized in that: The telescopic mechanism is a hydraulic cylinder, a pneumatic cylinder or an electric telescopic rod.

4. A powder material screening device according to claim 1, characterized in that: The feed inlet has a funnel-shaped structure.

5. A powder material screening device according to claim 1, characterized in that: The longitudinal section of the box body has a U-shaped structure.

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