Efficient powder screening device

Abstract

The utility model discloses an efficient powder screening device, which belongs to the technical field of screening and comprises a base, a bottom-layer screening hopper is arranged on the base, and a first screening hopper and a second screening hopper are sequentially mounted on the bottom-layer screening hopper. According to the screen cleaning device, the screen cleaning assembly is arranged, a limiting cover is installed on a connecting ring through a connecting sleeve, and screen cleaning balls are located in the limiting cover, so that the situation that all the screen cleaning balls move together and are stacked can be avoided, the situation that the screen is not cleaned in place is avoided, the situation that the stacked screen cleaning balls are blocked can be prevented, and normal screening work is guaranteed; a dispersing assembly is arranged in a feeding hopper on a top cover, when powder is fed, the powder impacts a dispersing plate, the dispersing plate is obliquely arranged, so that the dispersing plate is stressed to drive a connecting ball and a rotating rod to rotate on a rotating sleeve, centrifugal force is generated on the powder, the effect of dispersing the powder is achieved, the situation that the fed powder is stacked together is avoided, and the powder feeding efficiency is improved. And subsequent rapid screening is guaranteed, and the screening rate is increased.

Description

Technical Field

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

[0002] Powders often contain larger particles, and powders also vary in coarseness and fineness. To separate powders of varying coarseness and fineness, a screening device is required. A commonly used powder screening device is a rotary vibrating screen, which allows for multi-stage screening of powders, making screening efficient and quick. A rotary vibrating screen consists of a base, a vibrating motor, and a screening hopper. When in use, powder is placed into the screening hopper, and the vibrating motor is activated, causing the hopper to move. Fine powder passes through the screen and enters the next screening hopper for further screening, while coarser powder moves along the hopper wall and is ultimately discharged from the discharge port.

[0003] When using the existing rotary vibrating screen, in order to increase the screening amount and avoid the screen being blocked, cleaning balls are usually set on the screen. However, if the cleaning balls are placed directly in use, they are easy to pile up together, which in turn affects the vibration of the cleaning balls and the cleaning work of the screen. Part of the screen may not be cleaned, and the cleaning balls may get stuck after piling up, which affects the normal screening work. In addition, the powder cannot be dispersed when feeding, and all the powder accumulates on the top screen, which affects the screening rate of the powder. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-efficiency powder screening device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high-efficiency powder screening device includes a base, a bottom screening hopper is provided on the base, and a first screening hopper and a second screening hopper are installed in sequence on the bottom screening hopper, the second screening hopper is provided with a top cover, a screen structure is provided in the first screening hopper and the second screening hopper, the screening network structure consists of a first screen, a second screen and a cleaning assembly, a feed hopper is provided at the upper end of the top cover, and a dispersion assembly is connected to the feed hopper.

[0007] Preferably, a vibration motor is provided on the base, and a discharge hopper is connected to the first screening hopper and the second screening hopper of the bottom layer.

[0008] Preferably, the first screen is fixedly connected to the second screen, and the second screen is located above the first screen, and the screen cleaning assembly is located between the first screen and the second screen.

[0009] Preferably, the screen cleaning assembly includes a connecting ring, a limiting cover, a connecting sleeve and a cleaning ball. The limiting cover and the connecting sleeve are connected by a cross bar, and the connecting sleeve is connected to the connecting ring. The limiting cover and the connecting sleeve are distributed in a circular array on the connecting ring. The cleaning ball is arranged on the inner side of the limiting cover, and the cleaning ball is placed on the first screen.

[0010] Preferably, the dispersion assembly includes a fixed rod, a rotating sleeve, a rotating rod, a connecting ball, a dispersion plate and an end head, the fixed rod is fixedly connected to the rotating sleeve, and the end of the fixed rod is connected to the inner wall of the hopper, the rotating sleeve is provided with a rotating hole, the rotating rod is fixedly connected to the connecting ball, and the rotating rod is located in the rotating hole on the rotating sleeve, the dispersion plate is connected to the connecting ball, and the dispersion plates are distributed in a ring array on the connecting ball, and the end head is fixed to the upper end of the rotating rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the efficient powder screening device, through the setting of the cleaning net component, installs a limit cover on the connecting ring through the connecting sleeve, and the cleaning ball is located in the limit cover, which can prevent all the cleaning balls from moving together and piling up, avoid the situation where the screen is not cleaned in place, and prevent the accumulated cleaning balls from causing jamming, thereby ensuring the normal progress of the screening work. A dispersion component is set in the feed hopper on the top cover. When powder is fed, the powder hits the dispersion plate. Since the dispersion plate is set at an angle, the dispersion plate is forced to rotate on the rotating sleeve with the connecting ball and the rotating rod, thereby generating centrifugal force on the powder, playing a role in dispersing the powder, avoiding the accumulation of powder fed together, ensuring subsequent rapid screening, and improving the screening rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the screen of the utility model;

[0014] Figure 3 This is a schematic structural diagram of the screen cleaning component of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the dispersed components of the utility model.

[0016] In the figure: 1. Base; 2. Bottom screening bucket; 3. First screening bucket; 4. Second screening bucket; 5. Top cover; 6. First screen; 7. Second screen; 8. Screen cleaning assembly; 801. Connecting ring; 802. Limiting cover; 803. Connecting sleeve; 804. Cleaning ball; 9. Feed hopper; 10. Dispersion assembly; 1001. Fixed rod; 1002. Rotating sleeve; 1003. Rotating rod; 1004. Connecting ball; 1005. Dispersion plate; 1006. End; 11. Discharge hopper. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] like Figure 1-Figure 4 As shown, a high-efficiency powder screening device includes a base 1, a bottom screening hopper 2 is provided on the base 1, and a first screening hopper 3 and a second screening hopper 4 are installed on the bottom screening hopper 2 in sequence, a top cover 5 is provided on the second screening hopper 4, and a screen structure is provided in the first screening hopper 3 and the second screening hopper 4. The screening structure consists of a first screen 6, a second screen 7 and a screen cleaning assembly 8. A feed hopper 9 is provided at the upper end of the top cover 5, and a dispersion assembly 10 is connected to the feed hopper 9. A vibration motor is provided on the base 1, and a discharge hopper 11 is connected to the bottom screening hopper 2, the first screening hopper 3, and the second screening hopper 4. The first screen 6 is fixedly connected to the second screen 7, and the second screen 7 is located above the first screen 6. The screen cleaning assembly 8 is located between the first screen 6 and the second screen 7.

[0019] When using the rotary vibrating screen for efficient screening of powder, the rotary vibrating screen is stably placed on the base 1, and the powder is fed into the uppermost second screening hopper 4 through the single large feed hopper 9 of the top cover 5. During this process, the dispersing component 10 contacts the powder and disperses the powder, so that the powder is dispersed into the second screening hopper 4 as much as possible. After the vibration motor on the base 1 is started, the vibration motor drives the rotary vibrating screen to vibrate. Under the action of vibration, the powder in the second screening bucket 4 moves on the second screen 7. The fine powder passes through the second screen 7 and the first screen 6 on the second screening bucket 4 and falls into the first screening bucket 3, while the coarse powder is discharged from the discharge hopper 11 on the second screening bucket 4. The powder falling into the first screening bucket 3 continues to vibrate. The finer powder passes through the second screen 7 and the first screen 6 on the first screening bucket 3 and falls into the bottom screening bucket 2. The coarser powder is discharged from the discharge hopper 11 on the first screening bucket 3, and the powder falling on the bottom screening bucket 2 is finally discharged from the discharge hopper 11 on the lowest layer. In this way, multi-stage screening of the powder can be achieved, achieving the purpose of efficient screening. During the entire screening process, the screen cleaning component 8 moves between the screens, knocking on the screens, which can effectively clean the screens and ensure the normal progress of the screening work.

[0020] Through the above implementation scheme, the screen cleaning assembly 8 includes a connecting ring 801, a limiting cover 802, a connecting sleeve 803 and a cleaning ball 804. The limiting cover 802 and the connecting sleeve 803 are connected by a cross bar, and the connecting sleeve 803 is connected to the connecting ring 801. The limiting cover 802 and the connecting sleeve 803 are distributed in a circular array on the connecting ring 801. The cleaning ball 804 is arranged on the inner side of the limiting cover 802, and the cleaning ball 804 is placed on the first screen 6.

[0021] When screening powder, the first screen 6 exerts a force on the cleaning ball 804, and the cleaning ball 804 vibrates between the two screens, knocking the screen, which can increase the screening effect and clean the screen. The limiting cover 802 installed on the connecting ring 801 through the connecting sleeve 803 has a limiting effect on the cleaning ball 804, ensuring that the cleaning ball 804 is evenly distributed and guaranteeing the cleaning effect.

[0022] According to the above embodiment, the dispersion component 10 includes a fixed rod 1001, a rotating sleeve 1002, a rotating rod 1003, a connecting ball 1004, a dispersion plate 1005 and an end 1006. The fixed rod 1001 is fixedly connected to the rotating sleeve 1002, and the end of the fixed rod 1001 is connected to the inner wall of the feed hopper 9. The rotating sleeve 1002 is provided with a rotating hole. The rotating rod 1003 is fixedly connected to the connecting ball 1004, and the rotating rod 1003 is located in the rotating hole on the rotating sleeve 1002. The dispersion plate 1005 is connected to the connecting ball 1004, and the dispersion plate 1005 is distributed in a circular array on the connecting ball 1004. The end 1006 is fixed to the upper end of the rotating rod 1003.

[0023] When feeding powder, the powder is fed into the feed hopper 9. When the powder contacts the dispersion plate 1005 on the connecting ball 1004, the dispersion plate 1005 is subjected to force to generate a circumferential force. Under the joint action of all the dispersion plates 1005, the rotating rod 1003 on the connecting ball 1004 rotates on the rotating sleeve 1002, thereby rotating with the dispersion plate 1005. The dispersion plate 1005 generates centrifugal force on the powder, so that the powder falls evenly, thereby improving the subsequent screening effect. During the feeding process, the end head 1006 plays a limiting role to prevent the rotating rod 1003 from falling off, and the fixed rod 1001 ensures the stability of the rotating sleeve 1002 and ensures the normal use of the dispersion component 10.

[0024] It should be noted that, by setting up the cleaning component 8, a limiting cover 802 is installed on the connecting ring 801 through the connecting sleeve 803, and the cleaning ball 804 is located in the limiting cover 802, which can prevent all the cleaning balls 804 from moving together and piling up, avoid the situation where the screen is not cleaned in place, and prevent the accumulated cleaning balls 804 from causing jamming, thereby ensuring the normal progress of the screening work. A dispersion component 10 is set in the feed hopper 9 on the top cover 5. When powder is fed, the powder hits the dispersion plate 1005. Since the dispersion plate 1005 is set at an angle, the dispersion plate 1005 is forced to rotate with the connecting ball 1004 and the rotating rod 1003 on the rotating sleeve 1002, thereby generating centrifugal force on the powder, playing a role in dispersing the powder, avoiding the accumulation of powder fed, ensuring subsequent rapid screening, and improving the screening rate.

[0025] The above content describes the operating principles, features, and beneficial effects of the present invention. Persons skilled in the art will appreciate that the above content does not limit the present invention. The above embodiments and description describe the basic principles and features of the present invention. Various modifications and improvements may be made to the present invention as long as they are consistent with the concept of the present invention, and all such modifications shall fall within the scope of protection claimed by the present invention.

Claims

1. A powder material high-efficiency screening device, comprising a base (1), wherein a bottom screening bucket (2) is provided on the base (1), and a first screening bucket (3) and a second screening bucket (4) are sequentially mounted on the bottom screening bucket (2), and a top cover (5) is provided on the second screening bucket (4), characterized in that: A screen structure is provided in the first screening hopper (3) and the second screening hopper (4), and the screening structure is composed of a first screen (6), a second screen (7) and a screen cleaning assembly (8). A feed hopper (9) is provided at the upper end of the top cover (5), and a dispersion assembly (10) is connected to the feed hopper (9). The screen cleaning assembly (8) includes a connecting ring (801), a limiting cover (802), a connecting sleeve (803) and a cleaning ball (804). The limiting cover (802) and the connecting sleeve (803) are connected by a cross bar, and the connecting sleeve (803) is connected to the connecting ring (801). The limiting cover (802) and the connecting sleeve (803) are distributed in a ring array on the connecting ring (801). The cleaning ball (804) is arranged on the inner side of the limiting cover (802), and the cleaning ball (804) is placed on the first screen (6). The dispersion assembly (10) comprises a fixed rod (1001), a rotating sleeve (1002), a rotating rod (1003), a connecting ball (1004), a dispersion plate (1005) and an end head (1006); the fixed rod (1001) is fixedly connected to the rotating sleeve (1002), and the end of the fixed rod (1001) is connected to the inner wall of the feed hopper (9); the rotating sleeve (1002) is provided with a rotating hole; the rotating rod (1003) is fixedly connected to the connecting ball (1004), and the rotating rod (1003) is located in the rotating hole on the rotating sleeve (1002); the dispersion plate (1005) is connected to the connecting ball (1004), and the dispersion plates (1005) are distributed in a ring array on the connecting ball (1004); and the end head (1006) is fixed to the upper end of the rotating rod (1003).

2. The high-efficiency powder screening device according to claim 1, characterized in that: A vibration motor is provided on the base (1), and a discharge hopper (11) is connected to the first sieve hopper (3) and the second sieve hopper (4) of the bottom sieve hopper (2).

3. The high-efficiency powder screening device according to claim 2, characterized in that: The first screen (6) is fixedly connected to the second screen (7), and the second screen (7) is located above the first screen (6). The screen cleaning assembly (8) is located between the first screen (6) and the second screen (7).

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